Pneumatic clamping device

Abstract

The present invention relates to the field of semiconductor chip packaging production and processing technology, and in particular to a pneumatic clamping device, comprising a body, two clamping jaws and two driving cylinders, wherein the two clamping jaws are movably arranged on the body, and the two driving cylinders are respectively used to drive the two clamping jaws to move closer to or farther from each other; the two clamping jaws are respectively provided with clamping parts on the sides facing each other, and the two clamping parts cooperate to clamp objects. The present invention realizes the driving of the clamping jaws by driving the cylinders, so that the two clamping jaws only have the lifting action to realize the clamping, and the power of the driving cylinders can be adjusted, thereby preventing the occurrence of the phenomenon that the sheet is clamped and damaged.

Description

Technical Field

[0001] The invention relates to the technical field of semiconductor packaging production and processing, and in particular to a pneumatic clamping claw device. Background Art

[0002] At present, the existing die bonding equipment generally uses electromagnets to clamp the material (lead frame, hereinafter referred to as the material) through electromagnetic conversion to achieve the action of clamping around the axis. However, since the clamping claws of this type of clamping mechanism clamp around the axis, it is obviously not as easy to debug as the clamping claws that move up and down directly; and the action of the electromagnet is to absorb instantly after power is turned on, resulting in the uncontrollable clamping force, which is easy to cause the material to be clamped, and the connection parts will fail after being magnetized for a long time and cannot continue to work. Summary of the invention

[0003] The present invention provides a pneumatic clamping jaw device to solve the problems of the prior art, which can realize the straight up and down movement of the clamping jaw, and the clamping force can be controlled to avoid the problem of magnetization failure of the connecting parts.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The present invention provides a pneumatic clamping device, comprising a main body, two clamping jaws and two driving cylinders. The two clamping jaws are movably arranged on the main body, and the two driving cylinders are respectively used to drive the two clamping jaws to move closer to or away from each other; clamping parts are respectively arranged on the sides of the two clamping jaws facing each other, and the two clamping parts cooperate to clamp objects.

[0006] Furthermore, the piston rod of the driving cylinder is provided with a mounting piece, the mounting piece is provided with a mounting groove, and the clamping claw is installed in the mounting groove.

[0007] Furthermore, the clamping jaw is provided with a mounting portion, the mounting portion is cross-arranged with the clamping jaw, and the mounting portion is used to be fixed to the mounting groove by means of screws.

[0008] Furthermore, the mounting piece is provided with an adjustment hole, an adjustment piece is installed in the adjustment hole, and the adjustment piece is threadedly connected to the body.

[0009] Furthermore, the main body is provided with a limit seat, in which one of the mounting parts is provided with a limit member, the limit member is movably arranged in the limit seat, and the limit seat is provided with an adjustment column which can be raised and lowered, and the adjustment column is used to interfere with the limit member to limit the travel of the mounting part when it moves in a direction close to another mounting part.

[0010] Furthermore, the main body is provided with a guide member, the guide member is provided with a guide hole, the two mounting members are respectively provided with guide holes, and guide columns are provided between the guide holes.

[0011] Furthermore, the guide column is provided with two elastic retaining rings, and the guide member is located between the two elastic retaining rings.

[0012] Furthermore, the main body is provided with a mounting structure, and the mounting structure is provided with an external connection slot for being sleeved on an external driving mechanism.

[0013] Furthermore, a plurality of compensation grooves are respectively provided on the sides of the two clamping parts close to each other.

[0014] The beneficial effects of the present invention are as follows: the present invention drives the clamping jaws by driving the cylinder, so that the two clamping jaws only have a lifting action to achieve clamping, and the power of the driving cylinder is adjustable, thereby avoiding the phenomenon of the sheet being damaged by clamping, and also avoiding the failure to work or accidents caused by electromagnetic failure when using the electromagnetic method. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the present invention.

[0016] Figure 2 It is a schematic diagram of the decomposition of the present invention.

[0017] Figure 3 Schematic diagram of the clamping jaws of the present invention.

[0018] Figure numerals: 1—main body, 2—clamping jaws, 3—driving cylinder, 4—mounting member, 5—limiting seat, 6—guide member, 11—mounting structure, 12—external groove, 21—clamping portion, 22—mounting portion, 23—compensating groove, 40—mounting groove, 41—adjusting hole, 42—adjusting member, 43—limiting member, 44—guide hole, 51—adjusting column, 61—guide hole, 62—guide column, 63—elastic retaining ring. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the embodiments are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0020] like Figures 1 to 3 As shown, a pneumatic clamping jaw 2 device provided by the present invention comprises a main body 1, two clamping jaws 2 and two driving cylinders 3. The two clamping jaws 2 are movably arranged on the main body 1, and the two driving cylinders 3 are respectively used to drive the two clamping jaws 2 to move closer to or away from each other; a clamping portion 21 is respectively arranged on one side of the two clamping jaws 2 facing each other, and the two clamping portions 21 are used to clamp objects together.

[0021] During operation, the present invention is moved until the clamping parts 21 are located at the two ends of the sheet, and then the two driving cylinders 3 work together to drive the two clamping parts 21 to move towards each other until the two clamping parts 21 can just touch the two ends of the sheet, thereby achieving the clamping effect on the sheet. Compared with the electromagnet drive of the prior art, the present invention uses the driving cylinder 3 as the power, that is, it controls the two clamping claws 2 to achieve the effect of moving in a straight line, so as to facilitate control; and the power of the driving cylinder 3 is adjustable, which can prevent the sheet from being clamped.

[0022] In this embodiment, the piston rod of the driving cylinder 3 is provided with a mounting member 4 , the mounting member 4 is provided with a mounting groove 40 , and the clamping jaw 2 is installed in the mounting groove 40 .

[0023] In actual use, the clamping jaw 2 is provided with a mounting portion 22, which is arranged crosswise with the clamping jaw 2, and the mounting portion 22 is used to be fixed with the mounting groove 40 by screws. That is, the mounting portion 22 is preferably arranged perpendicular to the clamping jaw 2, and the mounting portion 22 and the clamping portion 21 are respectively located on different end surfaces on both sides of the clamping jaw 2, so that the mounting portion 22 has the advantage of being easy to disassemble, thereby facilitating replacement and maintenance.

[0024] Specifically, the mounting member 4 is provided with an adjustment hole 41, in which an adjustment member 42 is installed, and the adjustment member 42 is screwed to the guide member 6 of the body 1. The adjustment member 42 is preferably a screw, which is used to realize the assembly of the mounting member 4, and the screw can also be used to guide the mounting member 4 and limit the travel of the mounting member 4 when it is opened to avoid interference with surrounding components.

[0025] The present invention can realize the overall lifting and lowering of the pneumatic clamping jaws by adjusting the limit stroke of the cylinder, and is adaptable to the rapid change of frames with different base island heights.

[0026] Specifically, the body 1 is provided with a limit seat 5, one of the mounting parts 4 is provided with a limit member 43, the limit member 43 is movably provided in the limit seat 5, and the limit seat 5 is provided with an adjustment column 51 which can be raised and lowered, and the adjustment column 51 is used to interfere with the limit member 43 to limit the travel of the mounting part 4 when it moves in a direction close to the other mounting part 4. By the limit member 43 moving in the limit seat 5 and the adjustment column 51 being limited, the travel adjustment effect of the clamping jaw 2 is achieved, that is, the other clamping jaw 2 does not need to be adjusted, and only the clamping jaw 2 with the limit member 43 is adjusted, so that the clamping width between the two clamping parts 21 is adjusted by twisting the adjustment column 51, and the operation is simple and easy to achieve.

[0027] In this embodiment, the body 1 is provided with a guide member 6, the guide member 6 is provided with a guide hole 61, the two mounting members 4 are respectively provided with guide holes 44, and a guide column 62 is provided between the guide hole 44 and the guide hole 61. Through the provision of the guide column 62, the mounting member 4 can only move along the length direction of the guide column 62, thereby ensuring the stability of its movement and preventing the mounting member 4 from deviating and affecting the clamping effect.

[0028] Specifically, the guide column 62 is provided with two elastic retaining rings 63, and the guide member 6 is located between the two elastic retaining rings 63. The elastic retaining ring 63 is used to fix the position of the guide column 62 to prevent the guide column 62 from being separated from the guide hole 61.

[0029] In this embodiment, the main body 1 is provided with a mounting structure 11, and the mounting structure 11 is provided with an external slot 12 for sleeved on an external driving mechanism. That is, the external driving mechanism can be directly inserted into the external slot 12 to realize the assembly of the present invention, so as to drive the present invention to move and achieve the effect of automatic feeding.

[0030] In this embodiment, a plurality of compensation grooves 23 are respectively provided on the sides of the two clamping parts 21 close to each other, for compensating for the volume change of the clamping parts 21 and avoiding deformation of the clamping parts 21 due to large temperature changes to affect the clamping of the sheet.

[0031] In addition, the compensation groove 23 can also reduce the contact area between the clamping portion 21 and the sheet, thereby increasing the pressure to make the clamping more stable.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention is disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments according to the technology of the present invention are within the scope of the technical solution of the present invention without departing from the content of the technical solution of the present invention.

Claims

1. A pneumatic gripper device, characterized in that: It comprises a body, two clamping jaws and two driving cylinders, the two clamping jaws are movably arranged on the body, and the two driving cylinders are respectively used to drive the two clamping jaws to move closer to or away from each other; the two clamping jaws are respectively provided with clamping parts on the sides facing each other, and the two clamping parts cooperate to clamp objects; The piston rod of the driving cylinder is provided with a mounting piece, the mounting piece is provided with a mounting groove, and the clamping claw is installed in the mounting groove; The body is provided with a limit seat, one of the mounting parts is provided with a limit member, the limit member is movably provided in the limit seat, the limit seat is provided with an adjustment column which can be raised and lowered, the adjustment column is used to interfere with the limit member to limit the travel of the mounting part when it moves in a direction close to another mounting part; A plurality of compensation grooves are respectively arranged on the sides of the two clamping parts close to each other.

2. The pneumatic gripper device according to claim 1, characterized in that: The clamping jaw is provided with a mounting portion, the mounting portion is cross-arranged with the clamping jaw, and the mounting portion is used to be fixed with the mounting groove by screws.

3. The pneumatic gripper device according to claim 1, characterized in that: The mounting piece is provided with an adjusting hole, in which an adjusting piece is installed, and the adjusting piece is screwed to the body.

4. The pneumatic gripper device according to claim 1, characterized in that: The body is provided with a guide member, the guide member is provided with a guide hole, the two mounting members are respectively provided with guide holes, and guide columns are provided between the guide holes.

5. The pneumatic gripper device according to claim 4, characterized in that: The guide column is provided with two elastic retaining rings, and the guide member is located between the two elastic retaining rings.

6. The pneumatic gripper device according to claim 1, characterized in that: The main body is provided with a mounting structure, and the mounting structure is provided with an external connection slot for being sleeved on an external driving mechanism.

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