Clamping device and BGA (Ball Grid Array) repair table

Abstract

The utility model discloses a clamping device and a BGA repair table, and belongs to the field of circuit board maintenance. The clamping device comprises a mounting base and further comprises supporting frames symmetrically arranged on the mounting base. The fixing plate is fixedly arranged on the mounting base, and the fixing plate is arranged between the two supporting frames; the electric telescopic rods are symmetrically and fixedly connected between the fixing plate and the supporting frame; the extrusion shaft is arranged on the support frame; according to the utility model, the problem that the left-right extrusion force is too large at present is effectively solved, the upper and lower parts of the circuit board are effectively limited, and the repair efficiency of the circuit board is effectively improved at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of circuit board maintenance, especially clamping device and BGA rework station. BACKGROUND

[0002] The welding technology of BGA chip has become an indispensable key technology in the assembly of printed circuit board, and is mainly applied to the field of digital communication, wherein, when the circuit board is repaired, the BGA rework station with automatic air gun machine is usually used to repair the circuit board, and the clamping device is needed to clamp and fix the circuit board during the repair of the circuit board.

[0003] At present, the clamping device on the BGA rework station clamps the circuit board by two clamping platforms, the circuit board is first placed between the two clamping platforms, and then the clamping platforms are controlled to move close to each other by the electric telescopic rod or manual operation mechanism to clamp the edge of the circuit board, in order to ensure the stability of clamping, a certain clamping force is generally provided between the clamping platform and the circuit board to prevent the circuit board from moving up and down, which may cause the circuit board to be clamped too much or completely, affecting the repair, and if an additional limiting mechanism is used to limit the up and down of the circuit board, the repair efficiency may be affected. SUMMARY

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, and provide a clamping device and BGA rework station which can overcome the above problems or at least partially solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The clamping device comprises: a mounting seat, further comprising: a support frame symmetrically arranged on the mounting seat; a fixed plate fixedly arranged on the mounting seat, and the fixed plate is arranged between the two support frames; an electric telescopic rod fixedly connected between the fixed plate and the support frame; and an extrusion shaft arranged on the support frame.

[0007] In order to prevent the lower end of the circuit board from being worn, further, a protective pad is fixedly connected to the support frame.

[0008] In order to facilitate the multi-point limiting of the circuit board, further, a plurality of through grooves are arranged on the support frame, and an extrusion block matched with the through groove is fixedly connected to the extrusion shaft.

[0009] In order to facilitate the repair of the same type of circuit board, preferably, the extrusion shaft is rotatably arranged on the support frame, one side of the support frame is fixedly connected with a motor, the output end of the motor is fixedly connected with the extrusion shaft, and a limiting surface and a transition surface are arranged on the extrusion block.

[0010] To facilitate the removal of the circuit board, a push block is fixedly connected to the extrusion shaft, and an arc-shaped contact surface is provided on one side of the push block.

[0011] The BGA rework station includes a clamping device and a rework station body. The rework station body is equipped with a heating mechanism, and a control panel and buttons are provided on one side of the rework station body.

[0012] Compared with the prior art, the present invention provides a clamping device, which has the following beneficial effects:

[0013] 1. This clamping device fixes the circuit board between two extrusion shafts by retracting the electric telescopic rod a specified distance. The arc-shaped surface on the extrusion shaft limits the circuit board to the left and right as well as the up and down. This effectively limits the circuit board and solves the problem of excessive left and right extrusion force. It also effectively limits the up and down movement of the circuit board.

[0014] 2. When repairing circuit boards of the same model, this clamping device allows for pre-adjustment of the distance between the two support frames via two sets of electric telescopic rods. A button controls the motor to rotate the extrusion shaft, bringing the arc-shaped surface of the extrusion shaft on the underside of the transition surface closer to the circuit board. After placing the circuit board on the protective pad, pressing the button again rotates the motor to a specified angle. The motor's rotation causes the transition surface to contact the circuit board first, adjusting its position. Finally, when the limiting surface contacts the circuit board, it clamps the board, effectively improving the efficiency of reworking circuit boards of the same model.

[0015] 3. This clamping device lifts the circuit board by the arc-shaped contact surface on the jacking block, which makes it easier to push out the circuit board after repair, thereby effectively improving the efficiency of circuit board repair.

[0016] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model effectively solves the problem of excessive left and right squeezing force, effectively limits the vertical movement of the circuit board, and effectively improves the efficiency of circuit board rework. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the extrusion shaft, extrusion block, and jacking block in this utility model.

[0020] In the diagram: 1. Rework station body; 101. Heating mechanism; 102. Control console; 103. Button; 2. Mounting base; 201. Fixing plate; 202. Electric telescopic rod; 3. Support frame; 301. Through groove; 302. Extrusion shaft; 303. Motor; 304. Protective pad; 4. Extrusion block; 401. Limiting surface; 402. Transition surface; 403. Pushing block; 404. Arc-shaped contact surface. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example 1: Refer to Figures 1-3 The clamping device includes: a mounting base 2, and also includes: a support frame 3, symmetrically arranged on the mounting base 2; a fixing plate 201, fixedly arranged on the mounting base 2, and the fixing plate 201 is arranged between the two support frames 3; an electric telescopic rod 202, symmetrically fixedly connected between the fixing plate 201 and the support frame 3; and a pressing shaft 302, arranged on the support frame 3.

[0023] A protective pad 304 is fixedly connected to the support frame 3.

[0024] When repairing a circuit board, the motherboard to be repaired is placed on the protective pads 304 of the two support frames 3. Then, the model number of the circuit board to be repaired is entered into the control panel 102. The circuit board is fixed between the two extrusion shafts 302 by retracting the electric telescopic rod 202 a specified distance. The arc surface on the extrusion shaft 302 limits the circuit board to the left and right and to the up and down. This effectively limits the circuit board and solves the problem of excessive left and right extrusion force. It also effectively limits the up and down movement of the circuit board.

[0025] The diameter of the extrusion shaft 302 is greater than the thickness of the circuit board.

[0026] Example 2: Refer to Figures 1-3 Similar to Embodiment 1, in a further embodiment, in order to facilitate the rework of circuit boards of the same model, the support frame 3 is provided with multiple through slots 301, and the extrusion shaft 302 is fixedly connected with an extrusion block 4 that matches the through slots 301.

[0027] The extrusion shaft 302 is rotatably mounted on the support frame 3. A motor 303 is fixedly connected to one side of the support frame 3. The output end of the motor 303 is fixedly connected to the extrusion shaft 302. The extrusion block 4 is provided with a limiting surface 401 and a transition surface 402.

[0028] When repairing circuit boards of the same model, the distance between the two support frames 3 can be adjusted in advance by using two sets of electric telescopic rods 202. The motor 303 is controlled by button 103 to drive the extrusion shaft 302 to rotate, so that the arc-shaped surface of the extrusion shaft 302 on the underside of the transition surface 402 is close to the circuit board. After placing the circuit board on the protective pad 304, button 103 is pressed again to make the motor 303 rotate at a specified angle. The rotation of the motor 303 makes the transition surface 402 contact the circuit board first, adjusting the position of the circuit board. Finally, when the limiting surface 401 contacts the circuit board, the circuit board is clamped, thereby effectively improving the efficiency of re-repairing circuit boards of the same model.

[0029] An actuating block 403 is fixedly connected to the extrusion shaft 302, and an arc-shaped contact surface 404 is provided on one side of the actuating block 403.

[0030] After the rework is completed, press another button 103 to rotate the extrusion shaft 302 by a certain angle. The circuit board is lifted by the arc-shaped contact surface 404 on the push block 403, which makes it easier to push out the reworked circuit board and thus effectively improves the efficiency of circuit board rework.

[0031] Example 3: Reference Figure 1 and Figure 2 The BGA rework station includes a clamping device and a rework station body 1. The rework station body 1 is equipped with a heating mechanism 101, and a control console 102 and a button 103 are provided on one side of the rework station body 1.

[0032] When repairing a circuit board, the circuit board is fixed in place, and the part to be heated is heated by the heating mechanism 101 to complete the repair.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A clamping device, comprising: Mounting base (2), characterized in that it further includes: Support frame (3) is symmetrically arranged on the mounting base (2); A fixing plate (201) is fixedly mounted on the mounting base (2), and the fixing plate (201) is disposed between two support frames (3); An electric telescopic pole (202) is symmetrically and fixedly connected between the fixed plate (201) and the support frame (3); The extrusion shaft (302) is mounted on the support frame (3).

2. The clamping device according to claim 1, characterized in that, A protective pad (304) is fixedly connected to the support frame (3).

3. The clamping device according to claim 1, characterized in that, The support frame (3) is provided with multiple through slots (301), and the extrusion shaft (302) is fixedly connected with an extrusion block (4) that matches the through slot (301).

4. The clamping device according to claim 3, characterized in that, The extrusion shaft (302) is rotatably mounted on the support frame (3). A motor (303) is fixedly connected to one side of the support frame (3). The output end of the motor (303) is fixedly connected to the extrusion shaft (302). The extrusion block (4) is provided with a limiting surface (401) and a transition surface (402).

5. The clamping device according to claim 4, characterized in that, A push block (403) is fixedly connected to the extrusion shaft (302), and an arc-shaped contact surface (404) is provided on one side of the push block (403).

6. A BGA rework station, comprising the clamping device according to any one of claims 1-5, characterized in that, It also includes a rework station body (1), on which a heating mechanism (101) is provided, and a control console (102) and a button (103) are provided on one side of the rework station body (1).

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