Single shot riverting device

Claim 2

A single-shot riveting device comprising: a housing; a hollow cylinder arrnged in said housing and having a cavity and two end faces; a striking means travelling in said cavity of said hollow cylinder for effecting clinching; a rivet set means adapted for upsetting rivet heads arranged at one end face of said hollow cylinder; ports made in said hollow cylinder in the vicinity of said rivet set means; a cavity made in said housing and connected with said cylinder cavity via said ports and with a compressed gas source for returning said striking means to its initial position; a hydropneumatic cylinder arranged in said housing and having a high-pressure compressed gas pneumatic portion adapted for storing the compressed gas energy and effecting a working stroke of said striking means, and a hydraulic portion communicating with said hollow cylinder cavity durinG the travel of said striking means; a floating piston separating said pneumatic and hydraulic portions of said housing hydropneumatic cylinder and moving in said housing hydropneumatic cylinder, whereby the compressed gas pressure in said housing hydropneumatic cylinder pneumatic portion is increased for said storage of the compressed gas energy upon the fluid feed into said housing hydropneumatic cylinder hydraulic portion; a cover arranged at the other end face of said hollow cylinder and fixedly connected with said housing; a socket made in said cover at the side of said hollow cylinder, said socket receiving clearance-free the said striking means when the latter is being returned to its initial position and thereby preventing the fluid from flowing into the space between said striking means and said cover from said hydraulic portion when said fluid is fed thereto; a through hole made in said cover and connecting said socket with said hydraulic cavity during the working stroke of said striking means; a control valve mounted in said cover and shutting off said cover through hole when said fluid is fed into said port housing hydropneumatic cylinder hydraulic portion and opening it during the working stroke and returning said striking means to its initial position; a pressure main line connected with said hydraulic housing hydraulic portion for supplying the fluid thereto.

Claim 3

A device as claimed in claim 1, wherein said pneumatic portion of said housing hydropneumatic cylinder has overrunning stops arranged therein at the side walls, said stops restricting the travel of said floating piston.

Claim 4

A device as claimed in claim 1, wherein the comminication of said hollow cylinder cavity with said housing hydropneumatic cylinder hydraulic portion is effected via openings shut off by said striking means and made in said hollow cylinder in the vicinity of said cover, the fluid from said housing hydropneumatic cylinder hydraulic portion flowing into said hollow cylinder cavity during the working stroke of said striking means via said openings, and said hollow cylinder being mounted so that it is capable of turning around its axis relative to said cover and varying the passage section of said openings whereby the shock energy of said striking means may be controlled.

Claim 5

A single-shot riveting device comprising: a housing; a hollow cylinder arranged in said housing and having a cavity and two end faces; a striking means travelling in said cavity of said hollow cylinder for effecting clinching; a rivet set means adapted for upsetting rivet heads arranged at one end face of said hollow cylinder; ports made in said hollow cylinder in the vicinity of said rivet set means; a cavity made in said housing and connected with said cylinder cavity via said ports and with a compressed gas sourc for returning said striking means to its initial position; a hydropneumatic cylinder arranged in said housing and having a pneumatic portion for high-pressure compressed gas adapted for storing the compressed gas energy and effecting a working stroke of said striking means and a hydraulic portion for communicating with said hollow cylinder cavity during the travel of said striking means a floating piston made in the form of a washer, said hollow cylinder extending through the hole of said washer, said floating piston separating said pneumatic and hydraulic portions of said housing hydropneumatic cylinder and moving in said housing hydropneumatic cylinder, whereby the compressed gas pressure in said pneumatic portion of said housing hydropneumatic cylinder is increased for said compressed gas energy storage, upon the fluid feed into said hydraulic portion of said housing hydropneumatic cylinder; a cover arranged at the other end face of said hollow cylinder and being fixedly connected with said housing; a socket made in said cover at the side of said hollow cylinder, said socket receiving clearance-free said striking means when the latter is being returned to its initial position and preventing the fluid from flowing into the space between said striking means and said cover from said hydraulic portion when said fluid is fed thereto; a through hole made in said cover and connecting said socket with said housing hydropneumatic cylinder hydraulic portion during a working stroke of said striking means; a hydraulic cavity made in said cover and communicating with said cover through hole and said hydraulic portion of said housing hydropneumatic cylinder; a spring-loaded spindle arranged in said cover hydraulic cavity; a cone head arranged at one end of said spring-loaded spindle and adapted for shutting off said through hole cover through hole; a slot made at the other end of said spring-loaded spindle; a starting trigger employed in said device to manually raise said spindle and draw out its cone head from said cover through hole during a working stroke of said striking means; a hydropneumatic cylinder arrnaged in said cover and having a hydraulic portion and a pneumatic portion; a piston separating said hydraulic and pneumatic portions of said cover hydropneumatic cylinder; a rod arranged in said hydraulic portion of said cover hydropneumatic cylinder and having its one end rigidly connected with said piston thereof and its other end hinge-connected with said starting trigger to ensure a small uplift of the latter before said spindle is manually moved up and said cover through hole is opened and after the gas compression cycle is completed in said pneumatic portion of said housing hydropneumatic cylinder; a passageway made in said housing and serving as a continuation of said housing passageway; said cover and hosing passageways communicating said pneumatic portion of said cover hydropneumatic cylinder with said pneumatic portion of said housing hydropneumatic cylinder; a port made in said cover and communicating said hydraulic portion of said cover hydropneumatic cylinder with said cover hydraulic cavity; a pressure main line feeding said hydraulic portion of said housing hydropneumatic cylinder with the fluid via said hydraulic portion of said cover hydropneumatic cylinder, said cover hydraulic cavity and said passageways.

Claim 6

A single-shot riveting device comprising: a housing; a hollow cylinder arranged in said housing and having a cavity and two end faces; a striking means travelling in said cavity of said hollow cylinder for effecting clinching; a rivet set means adapted for upsetting rivet heads arranged at one end face of said hollow cylinder; ports made in said hollow cylinder in the vicinity of said rivet set means; a cavity made in said housing and connected with said cylinder cavity via said ports and with a compressed gas sourc for returning said striking means to its initial position; a hydropneumatic cylinder arranged in said housing and having a pneumatic portion for high-pressure compressed gas adapted for storing the compressed gas energy and effecting a working stroke of said striking means and a hydraulic portion for communicating with said hollow cylinder cavity during the travel of said striking means a floating piston made in the form of a washer, said hollow cylinder extending through the hole of said washer, said floating piston separating said pneumatic and hydraulic portions of said housing hydropneumatic cylinder and moving in said housing hydropneumatic cylinder, whereby the compressed gas pressure in said pneumatic portion of said housing hydropneumatic cylinder is increased for said compressed gas energy storage, upon the fluid feed into said hydraulic portion of said housing hydropneumatic cylinder; a cover arranged at the other end face of said hollow cylinder and being fixedly connected with said housing; a socket made in said cover at the side of said hollow cylinder, said socket receiving clearance-free said striking means when the latter is being returned to its initial position and preventing the fluid from flowing into the space between said striking means and said cover from said hydraulic portion when said fluid is fed thereto; a through hole made in said cover and connecting said socket with said housing hydropneumatic cylinder hydraulic portion during a working stroke of said striking means; a hydraulic cavity made in said cover and communicating with said cover through hole and said hydraulic portion of said housing hydropneumatic cylinder; a spring-loaded spindle arranged in said cover hydraulic cavity; a cone head arranged at one end of said spring-loaded spindle and adapted for shutting off said through hole cover through hole; a slot made at the other end of said spring-loaded spindle; a starting trigger employed in said device to manually raise said spindle and draw out its cone head from said cover through hole during a working stroke of said striking means; a hydropneumatic cylinder arrnaged in said cover and having a hydraulic portion and a pneumatic portion; a piston separating said hydraulic and pneumatic portions of said cover hydropneumatic cylinder; a rod arranged in said hydraulic portion of said cover hydropneumatic cylinder and having its one end rigidly connected with said piston thereof and its other end hinge-connected with said starting trigger to ensure a small uplift of the latter before said spindle is manually moved up and said cover through hole is opened and after the gas compression cycle is completed in said pneumatic portion of said housing hydropneumatic cylinder; a passageway made in said housing and serving as a continuation of said housing passageway; said cover and hosing passageways communicating said pneumatic portion of said cover hydropneumatic cylinder with said pneumatic portion of said housing hydropneumatic cylinder; a port made in said cover and communicating said hydraulic portion of said cover hydropneumatic cylinder with said cover hydraulic cavity; a pressure main line feeding said hydraulic portion of said housing hydropneumatic cylinder with the fluid via said hydraulic portion of said cover hydropneumatic cylinder, said cover hydraulic cavity and said passageways.

Claim 7

A single-shot riveting device comprising: a housing; a hollow cylinder arranged in said housing and having a cavity and two end faces; a striking means travelling within said cavity of said hollow cylinder for effecting clinching; a rivet set means adapted for upsetting rivet heads arranged at one end face of said hollow cylinder; ports made in said hollow cylinder in the vicinity of siad rivet means; a cavity made in said housing and connected with said cylinder cavity via said ports and with a compressed gas source for returning said striking means to its initial position; a hydropneumatic cylinder arranged in said housing and having a pneumatic portion for high-pressure compressed gas adapted for storing the compressed gas energy and effecting a working stroke of said striking means, and a hydraulic portion communicating with said hollow cylinder cavity during the travel of said striking means; a cover arranged at the other end side of said hollow clinder and fixedly connected with said housing; a floating piston made in the form of a washer, said hollow cylinder extending through the hole of said washer, said floating piston separating said pneumatic and hydraulic portions of said housing of hydropneumatic cylinder, whereby the compressed gas pressure in said pneumatic portion of said hydropneumatic cylinder housing is increased for said compressed gas energy storage when the fluid is fed into said hydraulic portion of said housing hydropneumatic cylinder; a socket made in said cover at the side of said hollow cylinder, said socket receiving clearance-free said striking means when the latter is being returned to its initial position and preventing the fluid from flowing into the space between said striking means and said cover from said hydraulic portion when said fluid is fed thereto; a through hole made in said cover and connecting said socket wiTh said hydraulic portion of said housing hydropneumatic cylinder during a working stroke of said striking means; a hydropneumatic cylinder arranged in said cover and having a pneumatic portion and a hydraulic portion; a port made in said cover and connecting said pneumatic portion of said cover hydropneumatic cylinder with said pneumatic portion of said housing hydropneumatic cylinder; a passageway made in said cover and connecting said cover hydropneumatic cylinder hydraulic portion with said housing hydropneumatic hydraulic portion; a piston of said cover hydropneumatic cylinder separating said portions thereof; a hollow rod arranged in said hydraulic portion of said cover hydropneumatic cylinder and having its one end connected with said cover hydropneumatic cylinder piston, and the other end of said hollow rod entering clearance-free said cover through hole for preventing the fluid from flowing into said cover socket from said hydraulic portion of said hydropneumatic cylinder housing via said cover through hole when siad fluid is fed into said hydropneumatic cylinder hydrualic housing portion, and leaving said cover through hole for communicating said cover socket with said hydropneumatic cylinder hydraulic portion housing during a working stroke of said striking means; ports made in said hollow rod and connecting said hydropneumatic cylinder hydraulic portion housing with said cover through hole, one of said rod ports running into said cover through hole and the other of said rod ports leading into said cover hydropneumatic cylinder hydraulic portion; a spring-leaded check valve arranged in a cavity of said hollow rod and opening one of said rod ports running into said cover through hole for draining the fluid therethrough from said cover socket when said striking means is being returned to its initial position; a pressure main line connected with said housing of the hydropneumatic cylinder hydraulic portion for feeding the fluid thereinto.

Claim 8

A single-shot riveting device comprising: a housing; a hollow cylinder arranged in said housing and having a cavity and two end faces; a striking means travelling within said cavity of said hollow cylinder for effecting clinching; a rivet set means adapted for upsetting rivet heads arranged at one end face of said hollow cylinder; ports made in said hollow cylinder in the vicinity of siad rivet means; a cavity made in said housing and connected with said cylinder cavity via said ports and with a compressed gas source for returning said striking means to its initial position; a hydropneumatic cylinder arranged in said housing and having a pneumatic portion for high-pressure compressed gas adapted for storing the compressed gas energy and effecting a working stroke of said striking means, and a hydraulic portion communicating with said hollow cylinder cavity during the travel of said striking means; a cover arranged at the other end side of said hollow clinder and fixedly connected with said housing; a floating piston made in the form of a washer, said hollow cylinder extending through the hole of said washer, said floating piston separating said pneumatic and hydraulic portions of said housing of hydropneumatic cylinder, whereby the compressed gas pressure in said pneumatic portion of said hydropneumatic cylinder housing is increased for said compressed gas energy storage when the fluid is fed into said hydraulic portion of said housing hydropneumatic cylinder; a socket made in said cover at the side of said hollow cylinder, said socket receiving clearance-free said striking means when the latter is being returned to its initial position and preventing the fluid from flowing into the space between said striking means and said cover from said hydraulic portion when said fluid is fed thereto; a through hole made in said cover and connecting said socket wiTh said hydraulic portion of said housing hydropneumatic cylinder during a working stroke of said striking means; a hydropneumatic cylinder arranged in said cover and having a pneumatic portion and a hydraulic portion; a port made in said cover and connecting said pneumatic portion of said cover hydropneumatic cylinder with said pneumatic portion of said housing hydropneumatic cylinder; a passageway made in said cover and connecting said cover hydropneumatic cylinder hydraulic portion with said housing hydropneumatic hydraulic portion; a piston of said cover hydropneumatic cylinder separating said portions thereof; a hollow rod arranged in said hydraulic portion of said cover hydropneumatic cylinder and having its one end connected with said cover hydropneumatic cylinder piston, and the other end of said hollow rod entering clearance-free said cover through hole for preventing the fluid from flowing into said cover socket from said hydraulic portion of said hydropneumatic cylinder housing via said cover through hole when siad fluid is fed into said hydropneumatic cylinder hydrualic housing portion, and leaving said cover through hole for communicating said cover socket with said hydropneumatic cylinder hydraulic portion housing during a working stroke of said striking means; ports made in said hollow rod and connecting said hydropneumatic cylinder hydraulic portion housing with said cover through hole, one of said rod ports running into said cover through hole and the other of said rod ports leading into said cover hydropneumatic cylinder hydraulic portion; a spring-leaded check valve arranged in a cavity of said hollow rod and opening one of said rod ports running into said cover through hole for draining the fluid therethrough from said cover socket when said striking means is being returned to its initial position; a pressure main line connected with said housing of the hydropneumatic cylinder hydraulic portion for feeding the fluid thereinto.

Claim 9

A single-shot riveting device comprising: a housing; a hollow cylinder arranged in said housing and having a cavity and two end faces; a striking means travelling within said cavity of said hollow cylinder for effecting clinching; a rivet set means adapted for upsetting rivet heads arranged at one end side of said hollow cylinder; ports made in said hollow cylinder in the vicinity of said rivet means; a cavity made in said housing and connected with said cylinder cavity via said ports and with a compressed gas source for returning said striking means to its initial position; a hydropneumatic cylinder arranged in said housing and having a high-pressure compressed gas pneumatic portion adapted for storing the compressed gas energy and effecting a working stroke of said striking means, and a hydraulic portion communicating with said hollow cylinder cavity during the travel of said striking means; a floating piston separating said pneumatic and hydraulic portions of said housing hydropneumatic cylinder and moving in said housing hydropneumatic cylinder whereby the compressed gas pressure in said housing hydropneumatic cylinder pneumatic portion is increased to a greater extent for said compressed gas energy storage when the fluid is fed into said housing hydropneumatic cylinder hydraulic portion; a cover arranged at the other end face of said hollow cylinder and fixedly connected with said housing; a socket made in said cover at the side of said hollow cylinder, said socket receiving clearance-free said striking means when the latter is being returned to its initial position and preventing the fluid from flowing into the space between said striking means and said cover from said housing hydropneumatic cylinder hydraulic portion when said fluid is fed thereto; a through hole in said cover and connecting said socket with said housing hydropneumatic cylinder hydraulic portion during a working stroke of said striking means; a hole made in said floating piston; a movable hollow rod extending through said floating piston hole, onE end of said movable hollow rod entering clearance-free said cover through hole for preventing the fluid from flowing into said cover sprocket from said housing hydropneumatic cylinder hydraulic portion via said cover through hole when the pressure is built up within said housing hydropneumatic cylinder hydraulic portion, and leaving said cover through hole for communicating said cover socket with said housing hydropneumatic cylinder hydraulic portion during a working stroke of said striking means; ports in said movable hollow rod, said movable hollow rod cavity communicating with said cover through hole and said housing hydropneumatic cylinder hydraulic portion via said rod ports; shoulders provided at the outer surface of said movable hollow rod and spaced at some distance from each other, one of said shoulders being adapted for restricting the travel of said rod in said cover through hole and the other one being adapted for interacting with said floating piston so that during a working stroke of said striking means said piston moves up and draws said rod out of said cover through hole; a spring-loaded check valve arranged in said rod cavity and opening one of said rod ports running into said cover through hole for drawining the fluid therethrough from said cover socket when said striking means is being returned to its initial position; a pressure main line connected with said housing hydropneumatic cylinder hydraulic portion for feeding the fluid thereinto.

Claim 10

A single-shot riveting device comprising: a housing; a hollow cylinder arranged in said housing and having a cavity and two end faces; a striking means travelling within said cavity of said hollow cylinder for effecting clinching; a rivet set means adapted for upsetting rivet heads arranged at one end side of said hollow cylinder; ports made in said hollow cylinder in the vicinity of said rivet means; a cavity made in said housing and connected with said cylinder cavity via said ports and with a compressed gas source for returning said striking means to its initial position; a hydropneumatic cylinder arranged in said housing and having a high-pressure compressed gas pneumatic portion adapted for storing the compressed gas energy and effecting a working stroke of said striking means, and a hydraulic portion communicating with said hollow cylinder cavity during the travel of said striking means; a floating piston separating said pneumatic and hydraulic portions of said housing hydropneumatic cylinder and moving in said housing hydropneumatic cylinder whereby the compressed gas pressure in said housing hydropneumatic cylinder pneumatic portion is increased to a greater extent for said compressed gas energy storage when the fluid is fed into said housing hydropneumatic cylinder hydraulic portion; a cover arranged at the other end face of said hollow cylinder and fixedly connected with said housing; a socket made in said cover at the side of said hollow cylinder, said socket receiving clearance-free said striking means when the latter is being returned to its initial position and preventing the fluid from flowing into the space between said striking means and said cover from said housing hydropneumatic cylinder hydraulic portion when said fluid is fed thereto; a through hole in said cover and connecting said socket with said housing hydropneumatic cylinder hydraulic portion during a working stroke of said striking means; a hole made in said floating piston; a movable hollow rod extending through said floating piston hole, onE end of said movable hollow rod entering clearance-free said cover through hole for preventing the fluid from flowing into said cover sprocket from said housing hydropneumatic cylinder hydraulic portion via said cover through hole when the pressure is built up within said housing hydropneumatic cylinder hydraulic portion, and leaving said cover through hole for communicating said cover socket with said housing hydropneumatic cylinder hydraulic portion during a working stroke of said striking means; ports in said movable hollow rod, said movable hollow rod cavity communicating with said cover through hole and said housing hydropneumatic cylinder hydraulic portion via said rod ports; shoulders provided at the outer surface of said movable hollow rod and spaced at some distance from each other, one of said shoulders being adapted for restricting the travel of said rod in said cover through hole and the other one being adapted for interacting with said floating piston so that during a working stroke of said striking means said piston moves up and draws said rod out of said cover through hole; a spring-loaded check valve arranged in said rod cavity and opening one of said rod ports running into said cover through hole for drawining the fluid therethrough from said cover socket when said striking means is being returned to its initial position; a pressure main line connected with said housing hydropneumatic cylinder hydraulic portion for feeding the fluid thereinto.

Claim 11

A single-shot riveting device comprising: a housing; a hollow cylinder arranged in said housing and having two end faces; a striking means travelling in said hollow cylinder cavity for effecting clinching; a rivet set means adapted for upsetting rivet heads arranged at one end face of said hollow cylinder; ports made in said hollow cylinder in the vicinity of said rivet set means; a cavity made in said housing and connected with said cylinder cavity via said ports and with a compressed gas sourc for returning said striking means to its initial postion; a hydropneumatic cylinder arranged in said housing and haing a high-pressure compressed gas pneumatic portion adapted for storing the compressed gas energy and effecting a working stroke of said striking means, and a hydraulic portion communicating with said hollow cylinder cavity during the travel of said striking means; a floating piston separating said pneumatic and hydraulic portions of said housing hydropneumatic cylinder and moving in said housing hydropneumatic cylinder whereby the compressed gas pressure in said hosing hydropneumatic cylinder pneumatic portion is increased to a greater extent for effecting said compressed gas energy storage when the fluid is fed into said housing hydropneumatic cylinder hydraulic portion; a cover arranged at the other end face of said hollow cylinder and fixedly connected with said housing; a socket made in said cover at the side of said hollow cylinder, said socket receiving clearance-free said striking means when the latter is being returned to its initial position and preventing the fluid from flowing into the space between said striking means and said cover from said housing hydropneumatic cylinder hydraulic portion when said fluid is fed thereto; an extension provided at said cover; a through hole made in said cover so that it passes through said extension and connects said cover socket when said housing hydropneumatic cylinder hydraulic portion during a working stroke of said striking means; a socket made in said floating piston, said extension entering clearance-free said piston socket and thereby preventing the fluid from flowing into said cover socket via sai cover through hole when said fluid is fed into said housing hydropneumatic cylinder hydraulic portion and leaving said piston socket for communicating said cover socket with said housing hydropneumatic cylinder hydraulic portion during a working stroke of said striking means and travel of said floating piston; a cavity in said cover; ports made in said cover and conNecting said cavity with said housing hydropneumatic cylinder hydraulic portion and with said cover socket; a spring-loaded check valve arranged in said cover cavity and opening one of said cover ports running into said cover socket for communicating said cover socket with said housing hydropneumatic cylinder hydraulic portion when said striking means is being returned to its initial position; a pressure main line connected with said housing hydropneumatic cylinder hydraulic portion for feeding the fluid thereinto.

Claim 12

A single-shot riveting device comprising: a housing; a hollow cylinder arranged in said housing and having two end faces; a striking means travelling in said hollow cylinder cavity for effecting clinching; a rivet set means adapted for upsetting rivet heads arranged at one end face of said hollow cylinder; ports made in said hollow cylinder in the vicinity of said rivet set means; a cavity made in said housing and connected with said cylinder cavity via said ports and with a compressed gas sourc for returning said striking means to its initial postion; a hydropneumatic cylinder arranged in said housing and haing a high-pressure compressed gas pneumatic portion adapted for storing the compressed gas energy and effecting a working stroke of said striking means, and a hydraulic portion communicating with said hollow cylinder cavity during the travel of said striking means; a floating piston separating said pneumatic and hydraulic portions of said housing hydropneumatic cylinder and moving in said housing hydropneumatic cylinder whereby the compressed gas pressure in said hosing hydropneumatic cylinder pneumatic portion is increased to a greater extent for effecting said compressed gas energy storage when the fluid is fed into said housing hydropneumatic cylinder hydraulic portion; a cover arranged at the other end face of said hollow cylinder and fixedly connected with said housing; a socket made in said cover at the side of said hollow cylinder, said socket receiving clearance-free said striking means when the latter is being returned to its initial position and preventing the fluid from flowing into the space between said striking means and said cover from said housing hydropneumatic cylinder hydraulic portion when said fluid is fed thereto; an extension provided at said cover; a through hole made in said cover so that it passes through said extension and connects said cover socket when said housing hydropneumatic cylinder hydraulic portion during a working stroke of said striking means; a socket made in said floating piston, said extension entering clearance-free said piston socket and thereby preventing the fluid from flowing into said cover socket via sai cover through hole when said fluid is fed into said housing hydropneumatic cylinder hydraulic portion and leaving said piston socket for communicating said cover socket with said housing hydropneumatic cylinder hydraulic portion during a working stroke of said striking means and travel of said floating piston; a cavity in said cover; ports made in said cover and conNecting said cavity with said housing hydropneumatic cylinder hydraulic portion and with said cover socket; a spring-loaded check valve arranged in said cover cavity and opening one of said cover ports running into said cover socket for communicating said cover socket with said housing hydropneumatic cylinder hydraulic portion when said striking means is being returned to its initial position; a pressure main line connected with said housing hydropneumatic cylinder hydraulic portion for feeding the fluid thereinto.