JPH0318152Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a mechanism for chucking a thin piece such as a lead frame when it is transferred.

[Prior Art] In the work of supplying thin pieces such as lead frames to the next process or loading them into other parts, it is sometimes necessary to chuck them. The mechanism for this purpose is required not only to be as simple as possible and to operate reliably, but also to be free from the risk of damaging the lead frame etc. during chucking. However, until now, no mechanism has been proposed that fully satisfies these requirements.

[The problem that the idea aims to solve]

The present invention was developed in response to the above-mentioned request, and the purpose is to provide a chucking mechanism for lead frames, etc., which has a simple structure, operates reliably, and is free from the risk of damaging the lead frame, etc. during chucking. be.

[Means to solve the problem]

The present invention consists of a claw mounting plate 7, which is provided with a plurality of claws 11, in a frame 1 that is transferred in three axial directions by a transfer robot of the X, Y, and Z three-axis orthogonal coordinate type.
Two sets of 10 are arranged so as to be slidable in the lateral direction, and the outer claw mounting plates 7, 10 of one set and the inner claw mounting plates 9, 8 of the other set are connected to the coupling plates 12, 10, respectively.
13, and an opening/closing cylinder 14 is disposed between the inner claw mounting plates 8 and 9, and a pair of pivot members 16 and 17 are pivotally connected to the cylinder rod. The other end is pivoted to the inner claw mounting plates 8 and 9, respectively, and the lifting cylinder 2
A hook 3 that protrudes downward from the bottom plate 4 of the frame 1 due to the action of the above is installed, and on the back side of the bottom plate 4,
A chucking mechanism such as a lead frame having protruding positioning protrusions 20 and 21 with oblique tips;
This solved the above problem.

[Effect]

After the hook 3 descends and engages the thin piece 23,
Under the action of the transfer robot, the frame 1 is moved and the lamina 23 is pulled out onto the chute 22. When the frame 1 moves backward and then lowers, the positioning protrusions 20 and 21 position the thin piece 23, and then the chuck is closed by the action of the opening/closing cylinder 14, and the thin piece 23 is chucked. It is transported to the desired position.

〔Example〕

A preferred embodiment of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 denotes a frame containing a chucking mechanism, which is fixed to a transfer robot (not shown) having three orthogonal coordinates for the X, Y, and Z axes. Reference numeral 2 denotes an elevating cylinder installed on the bottom plate 4 of the frame 1 via a bracket 2a, and a hook 3 attached to the rod is made to protrude and retract below the bottom plate 4 of the frame 1. Guide bars 5 and 6 are installed at the front and back of the bottom plate 4 (left and right in FIG. 1) via stoppers 18, which will be described later. Reference numerals 7 to 10 indicate claw mounting plates having a plurality of claws 11;
0 constitutes a set of chucks. Each of the claw mounting plates 7 to 10 is supported on the bottom plate 4 by laterally slidingly inserting the guide bars 5 and 6 therethrough. Reference numerals 12 and 12 are connecting plates that connect the claw mounting plates 7 and 9, and 13 and 13 are connecting plates that connect the claw mounting plates 8 and 10. Reference numeral 14 denotes an opening/closing cylinder installed on the bottom plate 4 via a bracket 14a, and is arranged between the claw mounting plates 8 and 9. An L-shaped member 15 is attached to the rod of the opening/closing cylinder 14,
Two pivot members 16, 1 are mounted on the horizontal part of the L-shaped member 15.
7 are pivotally mounted with their inner ends overlapping.
The outer end of the pivot member 16 is connected to the pawl mounting plate 8, and
The outer ends of the pivoting members 17 are respectively pivotally connected to the pawl mounting plates 9. Reference numeral 18 denotes a stopper that regulates the spacing between the claw mounting plates 7 and 8 and between the claw mounting plates 9 and 10, into which the guide bars 5 and 6 are inserted and held. A sensor 19 is installed at the end of the bottom plate 4 and detects the movement of the chuck. 20, 21
is a positioning protrusion with an oblique tip, which protrudes downward from the bottom plate 4. Reference numeral 22 denotes a chute on which a thin piece 23 of a lead frame or the like is mounted; the one shown is for two rows, and vertical grooves 24 are formed on the left and right sides of each row, and a concave portion 25 is formed at the lowered position of the claw 11. .

To explain the operation of the above embodiment, when the tip of the thin piece 23 is pushed out onto one end of the chute 22 by a pusher mechanism (not shown), the lifting cylinder 2 is actuated, and the hook 3 is moved from the bottom plate 4. lower down. At the lower end, the hook 3 enters into a guide hole protruding from both sides of the thin piece 23, and its tip escapes into the vertical groove 24. Then, when the transfer robot moves forward (leftward in FIG. 1), the thin piece 23 is pulled out by the hook 3 to a fixed position on the chute 23. Then, by the action of the lifting cylinder 2, the catch claw 3 rises and sinks into the bottom plate 4, and then, by the action of the transfer robot, the frame 1 returns to the state shown in FIG. 1 and descends. At that time, the claw mounting plates 7, 8 and the claw mounting plate 9,
10 is in the open state, and the claw 11 does not come into contact with the thin piece 23. During this downward movement, the tip inclined portion of either of the fine movement protrusions 20, 21
3, the thin piece 23 is displaced and moved to the proper position. At this time, each claw 11 escapes into the recessed portion 25. When the opening/closing cylinder 14 is operated, the L-shaped member 15 moves forward and presses the pivot portions of the pivot members 16 and 17. Accordingly, the pivot member 16 also moves the claw mounting plate 8.
The pivot members 17 press the claw mounting plates 9 in the lateral direction, respectively. As a result, when the claw mounting plate 8 moves laterally along the guide bars 5, 6, the connecting plate 13,
The claw mounting plate 10 coupled to the claw mounting plate 8 via the claw mounting plate 13 is pulled and moved laterally so as to approach the claw mounting plate 9. Furthermore, when the claw mounting plate 9 moves along the guide bars 5 and 6, the connecting plates 12 and 1
The claw mounting plate 7, which is connected to the claw mounting plate 9 through the claw mounting plate 2, is pulled and moved closer to the claw mounting plate 8. That is, the two sets of chucks are closed, and the lamina 2
3 and 23 are checked by the claws 11 from both sides. In this state, the transfer robot moves up and forward, and when it reaches the position where the thin pieces 23, 23 are to be transferred, it descends, and releases the thin pieces 23, 23 by performing the opposite operation to that described above. death,
Set it on the transfer section. In addition, the interval between the claws 11,
That is, the claw mounting plates 7 and 8 and the claw mounting plates 9 and 10
The distance can be regulated by the stopper 18.

[Effect of idea]

Since the present invention is as described above, it has a simple structure, operates reliably, allows for smooth and efficient transfer of the flakes, and does not apply strong force to the flakes during chucking, thereby preventing damage to the flakes. It has the effect that there is no risk of it happening.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a side view of the chute. Explanation of symbols, 1... Frame, 2... Lifting cylinder, 2a, 14a... Bracket, 3... Hooking claw, 4... Bottom plate, 5, 6... Guide bar, 7
~10...Claw mounting plate, 11...Claw, 12,1
3...Connecting plate, 14...Opening/closing cylinder, 15...
...L-shaped member, 16, 17... Pivoting member, 18...
Stopper, 19... Sensor, 20, 21...
Positioning protrusion, 22... Chute, 23... Thin piece, 24... Vertical groove, 25... Recessed portion.

Claims (1)

[Claims for Utility Model Registration] 1. A claw mounting plate 7 to 1 provided with a plurality of claws 11 in a frame 1 that is transferred in three axial directions by a transfer robot of an orthogonal coordinate type for the X, Y, and Z axes.
Two sets of 0 are arranged so as to be slidable in the lateral direction, and the outer claw mounting plates 7, 10 of one set and the inner claw mounting plates 9, 8 of the other set are connected to the coupling plate 1.
2 and 13, and an opening/closing cylinder 14 is disposed between the inner claw mounting plates 8 and 9, and a pair of pivot members 16 and 17 are pivotally connected to the cylinder rod. The other ends of 17 are pivoted to inner claw mounting plates 8 and 9, respectively, and
The bottom plate 4 of the frame 1 is lifted by the action of the lifting cylinder 2.
A chucking mechanism such as a lead frame is provided with a hooking claw 3 that protrudes downward from the bottom, and positioning protrusions 20 and 21 with oblique tips protruding from the back side of a bottom plate 4. 2 Each chuck claw mounting plate 7, 8 and 9, 10
A chucking mechanism for a lead frame, etc., according to claim 1, which is provided with a stopper 18 therebetween.