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1. 发明专利

JPH0890104A CLAMPING DEVICE 失效
公开(公告)号：JPH0890104A
公开(公告)日：1996-04-09
申请号：JP22434194
申请日：1994-09-20
申请人： KOSMEK KK
发明人： YONEZAWA KEITARO
IPC分类号： B23Q3/06 , B21D37/14
摘要： PURPOSE: To manufacture a small and light clamping device. CONSTITUTION: The fulcrum part 5a of a clamp arm 5 is freely and oscillatarily supported in the vertical direction by a fulcrum pin 13 on a housing 3 extending in the back and forth direction. A transmission shaft 20 is connected to the left tip part of the piston rod 50 of a pneumatic cylinder 6 by a connecting ring 24. A first roller 21 is freely rotatably fit to the transmission shaft 20, and the first roller 21 is engaged with the cam-shaped force point part 5b of the clamp arm 5 from a lower side. Second rollers 22 are freely rotatably fit to both ends of the transmission shaft 20, and the second rollers 22 are guided in the back and forth direction by a supporting groove 26 formed on a housing 3. When clamping a metallic die D, the piston rod 50 is made to project in the left direction. Then, the force point part 5b is pressed upward by the first roller 21 with the second roller 22. Consequently, the metallic die D is pressed downward by a working point part 5c of the left part of the clamp arm 5.

2. 发明专利

JPH0768439A SCREW ENGAGEMENT TYPE CLAMP DEVICE 失效
公开(公告)号：JPH0768439A
公开(公告)日：1995-03-14
申请号：JP22155893
申请日：1993-09-07
申请人： KOSMEK KK
发明人： ARISATO AKIRA , YONEZAWA KEITARO
IPC分类号： B21D37/14 , B23P19/06 , B23Q3/06
摘要： PURPOSE:To remove a screw opening between a male screw and a clamp female screw and secure large clamp force by providing a penetration hole and an elevation means at a base, and providing at the same time a push-pressing portion at a clamp rod. CONSTITUTION:In the state of clamping, a clamp rod 9 is rotated clockwise by means of the output portion 14a of a rotary means 14, and the male screw 10 of the rod 9 is screwed into the clamp female screw 7 of a fixed matter 6. By the screw engagement force of both screws 10, 7, the fixed matter 6 is pulled upward through the rod 9, and downward reaction acting on the rod 9 is received on the upper surface of a base 1 through a push-pressing portion 11. As a result, the fixed matter 6 is fixed strongly at the lower surface of the base 1. When changeover into an unclamping state is made, the clamp rod 9 is rotated counterclockwise by means of the rotary means 14, and at the same time is ascended by means of an ascending/descending means 20.

3. 发明专利

JPH0596431A CLAMPING DEVICE 失效
公开(公告)号：JPH0596431A
公开(公告)日：1993-04-20
申请号：JP31545191
申请日：1991-11-01
申请人： KOSMEK KK
发明人： YONEZAWA KEITARO , SHIRAKAWA TSUTOMU
IPC分类号： B21D37/14 , B22D17/26 , B23Q3/06 , B25B5/06 , B29C33/20 , B29C45/17 , B29C45/26
摘要： PURPOSE:To form a clamp device in small size and also to surely perform its unclamping action, in the clamp device of type such that a clamping fixture is straight advanced and driven diagonally from the upperside relating to a clamped surface of a metal mold arranged in the front side of a housing. CONSTITUTION:A piston 10 is inserted into a cylinder hole 9 in a housing 4 of a hydraulic clamp 3 to fix a clamping fixture 7 to a front part of this piston 10. A clamping end face 22 of this clamping fixture 7 is formed amost parallelly to a clamped surface 2a of a metal mold 2. A sliding shuttle member 21 is interposed between the clamping end face 22 and the clamped surface 2a. This shuttle member 21 is supported to the clamping end face 22 in a condition that the shuttle member can be slid and moved in a fixed range in a longitudinal direction.

4. 发明专利

JPH0544633A GAS BOOSTER 失效
公开(公告)号：JPH0544633A
公开(公告)日：1993-02-23
申请号：JP22485891
申请日：1991-08-09
申请人： KOSMEK KK
发明人： YONEZAWA KEITARO
IPC分类号： F04B5/00 , F04B5/02
摘要： PURPOSE:To increase the discharge pressure in the case of low load, in gas booster for boosting the low pressure gas introduced into a plunger chamber according to the sectional area ratio of a plunger and a pneumatic piston. CONSTITUTION:The first piston 8 which is reciprocatingly driven in the vertical direction by the pressurized fluid such as compressed air and a plunger 21 inserted into a plunger hole 20 are fixed in the upper and lower parts. A motor chamber 9 is formed on the upper side of the first piston 8, and the third cylinder hole 76 having the smaller diameter than the plunger hole 20 is formed on the upper side of the motor chamber 9. The third piston 77 which is fitted in airtight form with the third cylinder hole 76 is fixed on the first piston 8. A brake chamber 79 is formed on the upper side of the third piston 77, and the brake chamber 79 and a feeding port 14 for the pressure fluid are connected to each other through a communication passage 81. An opening/closing means 82 for opening/closing-operating the communication passage 81 is interlocking- connected with the first piston 8.

5. 发明专利

JPH0544632A GAS BOOSTER 失效
公开(公告)号：JPH0544632A
公开(公告)日：1993-02-23
申请号：JP22485791
申请日：1991-08-09
申请人： KOSMEK KK
发明人： YONEZAWA KEITARO
IPC分类号： F04B5/00 , F01B11/02 , F01L25/06 , F04B5/02 , F04B9/08 , F04B9/127 , F04B49/16
摘要： PURPOSE:To improve the gas discharge performance in the case of high load, in a gas booster for boosting the low pressure gas introduced into a plunger chamber, according to the sectional area ratio of a plunger and a pneumatic piston. CONSTITUTION:The first piston 8 which is reciprocatingly driven in the vertical direction by the pressure fluid such as compressed air and a plunger 21 inserted into a plunger hole 20 are fixed in the upper and lower parts. The second piston 58 is inserted in airtight shiftable manner in the vertical direction in the second cylinder hole 57 formed on the lower side of the plunger hole 20. A cushion chamber 61 is formed on the lower side of the second piston 58. The cushion chamber 61 and the outlet 25b of the second check valve 25 for gas discharge are connected through a communication passage 62. A stopper part 64 for suppressing the upward shift over a prescribed quantity of the second piston 58 is formed on the peripheral wall of the second cylinder hole 25.

6. 发明专利

JPH04313429A FLUID PRESSURE CLAMP WITH CLAMP LOCK DEVICE 失效
公开(公告)号：JPH04313429A
公开(公告)日：1992-11-05
申请号：JP10853191
申请日：1991-04-12
申请人： KOSMEK KK
发明人： YONEZAWA KEITARO
IPC分类号： B21D37/14 , B25B5/06 , B25B5/08
摘要： PURPOSE:To miniaturize the fluid pressure clamp of a form for locking an object to be fixed of a die, etc., to a clamp state, even when clamp fluid pressure drops abnormally. CONSTITUTION:A first piston 11 for a clamp is inserted into a second piston 17 for a lock inserted into a cylinder hole 9 of a housing 4, so as to be freely movable in the forward and the backward directions. and a clamp implement 7 is fixed to the front part of its first piston 11. In the rear side of both the pistons 11, 17, a first operating chamber 21 for a clamp is formed, and in the front side of a second piston 17, a second operating chamber 25 for an unclamp is formed. Extending over the outside peripheral surface of said first piston 11 and said cylinder hole 9, a wedge space 30 for a clamp lock is formed in a front narrowed shape. A lock wedge 31 inserted from the rear side into its wedge space 30, and a lock release engaging part 34 for facing a lock release engaged part 33 of said first piston 11 from the front side are provided on the front part and the rear part of said second piston 17.

7. 发明专利

JPH0478307A PRESSURE OIL SUPPLYING AND EXHAUSTING DEVICE FOR HYDRAULIC CYLINDER 失效
公开(公告)号：JPH0478307A
公开(公告)日：1992-03-12
申请号：JP19353790
申请日：1990-07-20
申请人： KOSMEK KK
发明人： YONEZAWA KEITARO
IPC分类号： F15B20/00 , B29C33/20 , B29C45/26 , B29C45/82
摘要： PURPOSE:To leave pressure in a hydraulic driving chamber, and prevent an over-rise of the pressure by interposing a throttle passage in a pressure oil flow passage between a pressure port and a work ports, and separating a piston-type valve member from a valve seat under the normal condition of the pressure of the pressure port, and making the piston-type valve member abut on the valve seat under the abnormal condition. CONSTITUTION:Under the normal condition of the pressure of a pressure port P a work port A, a valve member 30 of a residual pressure keeping valve 14 is opened by the pressure of a pressure receiving chamber 31, resisting to a residual pressure keeping spring 19, and in the case that the pressure of a hydraulic driving chamber 2 and the work port A is raised slowly by the expansion of the oil caused by the received heat of a hydraulic cylinder 1, the pressure corresponding to a rise is escaped from a residual pressure keeping valve 14 and a pressure compensating valve 12 to a pressure oil exhaust passage 7, and an over-rise the pressure of the hydraulic driving chamber 2 is prevented. In the case that the pressure of the pressure port P is lowered abnormally by oil leakage, the pressure oil inside the hydraulic driving chamber 2 is exhausted quickly from the work port A to the pressure port P through a throttle passage 37, and when the pressure of the work port A is lowered to a set pressure for the residual pressure, a residual pressure keeping spring 19 closes the valve member 30 to make it abut on the valve seat 28. The pressure of the work port A can be thereby prevented. from lowering more than that.

8. 发明专利

JPH0369868A SEAT VALVE TYPE HYDRAULIC OIL FEED AND DISCHARGE CONTROL VALVE 失效
公开(公告)号：JPH0369868A
公开(公告)日：1991-03-26
申请号：JP20767389
申请日：1989-08-09
申请人： KOSMEK KK
发明人： YONEZAWA KEITARO
IPC分类号： F16K11/044 , F15B13/04 , F16K11/14
摘要： PURPOSE:To prolong the use life of a seal for a check valve element by receiving a pressing force of a return control means with a shortage preventing valve seat so that the force dees not act upon a resilient seal between the check valve body and feed pressure valve seat in a pressure discharge condition so as to sustain the resilient condition of the resilient seal for a long time. CONSTITUTION:In a pressure discharge condition, a pressing force of a return control means 37 is received by a shortage preventing valve element 17 by way of a shortage preventing valve element 23, and accordingly, it dose not act upon a resilient seal member 21 between a check-valve element 19 and a feed pressure valve seat 15. Irrespective of accumulation of operating cycles of the return control means 37, the resilient condition of the resilient seal member 21 is satisfactorily maintained for a long time, and the resilient force of a check valve element closing spring 20 can be so weak that it only elastically deform the resilient seal member 21 made of rubber or the like in a pressure holding condition. Further, in a pressure feed condition, the check valve element 19 has a low cracking pressure while having a large valve opening lift, thereby it is possible to reduce the loss of pressure.

9. 发明专利

JPH02170546A DEVICE FOR ALIGNING AND TAKING-OUT LEAD FRAME WITH FINISHED UPPER EDGE MOLDING FOR ELECTRONIC COMPONENT 失效
公开(公告)号：JPH02170546A
公开(公告)日：1990-07-02
申请号：JP32647088
申请日：1988-12-23
申请人： KOSMEK KK , TAIYO DENSAN KK
发明人： YONEZAWA KEITARO , YAMADA TADAO
IPC分类号： B65G47/57 , B65G47/24 , B65G47/30 , H01L21/50
摘要： PURPOSE:To contrive the improvement of a working efficiency by a method wherein a driving device is interlocked and coupled with a wrapping conveyer belt in such a way as to drive a transfer rotating part facing forward and upward. CONSTITUTION:A driving device 4 is interlocked and coupled with a wrapping conveyer belt 1 in such a way as to drive a transfer rotating part 7 facing forward and upward and a transfer guide device 5 guides an intermediate transfer part 7b between transfer parts 7a and 7c in an inner-recessed state in such a way that the up-grade of the transfer part 7c closer to the terminal of the rotating part 7 is made steep to the transfer part 7a closer to the starting end of the rotating part 7. Moreover, a plurality of transfer pawls 6 are made to project at proper intervals in the rotating direction of the belt 1 and a forward-facing work led end receiving part 12, a front-rising work leg end scooping-in slant face, a forward-facing work vertex receiving part 10 and a back-rising work smoothly falling slant face are formed on the front face in the rotating direction of each pawl 6 in order from its base end edge toward its point edge to constitute a device. Thereby, a work is mechanized and a working efficiency can be improved.

10. 发明专利

JPH02113541A INDIVIDUALLY TAKING-OUT EQUIPMENT FOR LEAD FRAME OF ELECTRONIC PARTS WHEREIN MOLDING OF INTERMEDIATE PART IS FINISHED 失效
公开(公告)号：JPH02113541A
公开(公告)日：1990-04-25
申请号：JP26681688
申请日：1988-10-21
申请人： KOSMEK KK , TAIYO DENSAN KK
发明人： YONEZAWA KEITARO , YAMADA TADAO
IPC分类号： B65G47/30 , B65G47/24 , B65G47/57 , H01L21/50
摘要： PURPOSE:To remarkably increase working efficiency as compared with the case of manual operation by enabling an automatic operation using a machine wherein lead frames are arranged in a specified attitude and taken out one by one. CONSTITUTION:Out of two lead frames R and R' carried by an end-side conveying part 7c, the lower side lead frame R is accepted by a work receiving groove 10 of a conveying pawl 6, and arranged in a specified attitude. The upper side lead frame R' is, in a representative manner, set in a state shown by either H.I or J. All of the upper side lead frames R' drop. The lowest side lead frame R only is accepted by a work receiving groove 10, set in a specified atittude, and sent out one by one in a specified attitude by a final rotary part 7d. Thereby, an operation for taking out lead frames one by one in a specified attitude is done by a machine, and working efficiency can be increased.

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