Breakage prevention mechanism of transfer apparatus and transfer apparatus using thereof

Patent metadata

Field	Value
Publication number	US-9339861-B2
Application number	US-201414550392-A
Country	US
Kind code	B2
Filing date	Nov 21, 2014
Priority date	Mar 18, 2010
Publication date	May 17, 2016
Grant date	May 17, 2016

Abstract

A breakage prevention mechanism is configured to prevent deformation or breakage of a crossbar and transfer the work even in the condition where a pair of left and right arm supporting the both end of the cross bar is displaced beyond assumption. The breakage prevention mechanism is equipped with a pair of arms which is synchronized and moves approximately parallel, and a crossbar bridged between the top end of the arms. Both end of the crossbar and the arm are connected pivotably around two axis. Both end of the crossbar are configured to be slidable against the arm in X axis direction. The plunger is placed between both end of the crossbar and arm, in which protects the crossbar by restraining the pivoting and the sliding of both in the normal condition and releasing the restraint when the unintended force is given.

First claim

The invention claimed is:

1. A crossbar system transfer apparatus configured to carry a work in or out of a press machine, comprising:
a crossbar provided with a work holder that holds the work;
a pair of transferring members that supports the crossbar;
a connection member connected between the crossbar and one of the pair of transferring members; and
a shaft member being held by both of the crossbar and the connection member,
wherein the crossbar pivots around the shaft member relative to the connection member, and one of the crossbar and the connection member slides on and along a surface of the shaft member.

2. The crossbar system transfer apparatus according to claim 1 , wherein the shaft member slides along an orthogonal direction relative to a direction in which the shaft member extends.

3. The crossbar system transfer apparatus according to claim 1 , wherein the connection member pivots relative to the one of the pair of transferring member.

4. The crossbar system transfer apparatus according to claim 3 , wherein a revolving surface in which the connection member pivots relative to the one of the pair of transferring members is different than a revolving surface in which the crossbar pivots relative to the connection member.

5. The crossbar system transfer apparatus according to claim 3 , further comprising:
another shaft member being supported by the one of the pair of transferring members and the connection member and that extends in parallel with a track surface of the one of the pair of transferring member, the another shaft member being positioned apart from the shaft member,
wherein the connection member pivots around the another shaft member.

6. The crossbar system transfer apparatus according to claim 5 , wherein a diameter of the another shaft member is greater than that of the shaft member.

7. The crossbar system transfer apparatus according to claim 5 , wherein the shaft member extends in a different direction than the another shaft member.

8. A crossbar system transfer apparatus configured to carry a work in or out of a press machine, comprising:
a crossbar provided with a work holder that holds the work;
a pair of transferring members that supports the crossbar;
a connection member connected between the crossbar and one of the pair of transferring members; and
a shaft member being held by both of the crossbar and the connection member and supporting a rotation of the cross bar relative to the connection member,
wherein the shaft member moves in the crossbar or in the connection member.

9. The crossbar system transfer apparatus according to claim 8 , wherein the shaft member slides along an orthogonal direction relative to a direction in which the shaft member extends.

10. The crossbar system transfer apparatus according to claim 8 , wherein the connection member pivots relative to the one of the pair of transferring member.

11. The crossbar system transfer apparatus according to claim 10 , wherein a revolving surface in which the connection member pivots relative to the one of the pair of transferring members is different than a revolving surface in which the crossbar pivots relative to the connection member.

12. The crossbar system transfer apparatus according to claim 10 , further comprising:
another shaft member being supported by the one of the pair of transferring members and the connection member and that extends in parallel with a track surface of the one of the pair of transferring member, the another shaft member being positioned apart from the shaft member,
wherein the connection member pivots around the another shaft member.

13. The crossbar system transfer apparatus according to claim 12 , wherein a diameter of the another shaft member is greater than that of the shaft member.

14. The crossbar system transfer apparatus according to claim 12 , wherein the shaft member extends in a different direction than the another shaft member.

15. A crossbar system transfer apparatus configured to carry a work in or out of a press machine, comprising:
a crossbar provided with a work holder that holds the work;
a pair of transferring members that supports the crossbar;
a connection member connected between the crossbar and one of the pair of transferring members; and
a shaft member being held by a first supporting portion in the crossbar and a second supporting portion in the connection member, one of the first and second supporting portions being elongated and the other of the first and second supporting portions being circular.

16. The crossbar system transfer apparatus according to claim 15 , wherein the one of the first and second supporting portions is elongated along an orthogonal direction relative to a direction in which the shaft member extends.

17. The crossbar system transfer apparatus according to claim 15 , wherein the shaft member penetrates through the one of the first and second supporting portions.

18. The crossbar system transfer apparatus according to claim 15 , further comprising:
another shaft member being supported by the one of the pair of transferring members and the connection member and that extends in parallel with a track surface of the one of the pair of transferring member, the another shaft member being positioned apart from the shaft member,
wherein the connection member pivots around the another shaft member relative to the one of the pair of transferring member.

19. The crossbar system transfer apparatus according to claim 18 , wherein a diameter of the another shaft member is greater than that of the shaft member.

20. The crossbar system transfer apparatus according to claim 18 , wherein the shaft member extends in a different direction than the another shaft member.

Assignees

• Aida Eng Ltd
• Aida Eng Ltd

Inventors

• Takeda Keisuke
• Nakoshi Seiji
• Koshimizu Takashi

Classifications

• B25J11/00

  Manipulators not otherwise provided for · CPC title

• B21D55/00

  Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass (for presses in general B30B; safety devices in general F16P) · CPC title

• B21D43/055

  Devices comprising a pair of longitudinally and laterally movable parallel transfer bars · CPC title

• B21D43/11

  for feeding sheet or strip material · CPC title

• B21D43/052 Primary

  Devices having a cross bar · CPC title