Automatic clamping device for PCB (Printed Circuit Board)

Abstract

The utility model discloses a PCB automatic clamping device which comprises a support, the bottom of the support is connected with a supporting plate through a hydraulic rod, the hydraulic rod moves left and right at the bottom of the support through a sliding block, and the bottom of the supporting plate is connected with two symmetrically-arranged clamps. The clamp comprises a barrel with an opening in the bottom, an upper clamping plate is fixedly connected to one side of the barrel, a lower clamping plate hinged to the bottom of the barrel is arranged at the bottom of the upper clamping plate, and a spring is fixedly connected between the lower clamping plate and the inner side wall of the barrel. The two clamps are arranged, the upper clamping plate is placed on the two sides of the upper portion of the thin-layer PCB, the output end of the telescopic rod is stretched to press one end of the lower clamping plate so that the lower clamping plate can rotate, the other end of the lower clamping plate can be close to the upper clamping plate, clamping of the thin-layer PCB is completed, and then transferring of the thin-layer PCB is completed through the hydraulic rod and the supporting plate. And in the clamping process, the thin-layer PCB cannot be deformed.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB boards, and particularly relates to an automatic clamping device for PCB boards. Background Art

[0002] The transfer of PCB boards (printed circuit boards) is a very crucial part of the automated production line, used to move and position PCB boards between different workstations. Currently, the commonly used devices for PCB board transfer include mechanical clamps and vacuum adsorption clamps, etc.

[0003] For thin-layer PCB boards with uneven surfaces, the vacuum adsorption clamp will affect the adsorption effect due to poor sealing. The existing mechanical clamp clamps the PCB board by moving the two side clamping plates towards the middle. However, for thin-layer PCB boards with uneven surfaces, when the two side clamping plates move towards the middle, the thin-layer PCB board is prone to deformation and is not easy to clamp. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an automatic clamping device for PCB boards to solve the technical problem that the clamps in the prior art are not suitable for clamping thin-layer PCB boards with uneven surfaces.

[0005] To solve the above technical problem, the utility model specifically provides the following technical solutions:

[0006] An automatic clamping device for PCB boards includes a bracket. The bottom of the bracket is connected with a support plate through a hydraulic rod. The hydraulic rod moves left and right at the bottom of the bracket through a slider. The bottom of the support plate is connected with two symmetrically arranged clamps.

[0007] The clamp includes a cylinder body with an open bottom. On one side of the cylinder body, an upper clamping plate is fixedly connected. At the bottom of the upper clamping plate, a lower clamping plate hinged to the bottom of the cylinder body is provided. A spring is fixedly connected between the lower clamping plate and the inner side wall of the cylinder body. Through the pulling force of the spring, one end of the lower clamping plate is arranged inside the cylinder body, and a telescopic rod is fixedly connected to the bottom of the inner wall of the cylinder body.

[0008] Wherein, the output end of the telescopic rod stretches and presses down one end of the lower clamping plate, causing the lower clamping plate to rotate, and making the other end of the lower clamping plate approach the upper clamping plate.

[0009] As a preferred scheme of the utility model, one of the clamps slides left and right at the bottom of the support plate through a slider, so as to adjust the distance between the two clamps.

[0010] As a preferred scheme of the utility model, soft pads are fixedly connected to the bottom of the upper clamping plate and the top of the lower clamping plate, and a plurality of anti-slip grooves are formed on the soft pads.

[0011] As a preferred embodiment of the present utility model, both the upper clamping plate and the lower clamping plate are connected with soft pads through airbag layers. The airbag layers are inflated and deflated through air filling pipes, and the distance between the two soft pads on the same fixture is adjusted by the inflation and deflation of the airbag layers.

[0012] The present utility model has the following beneficial effects compared with the prior art:

[0013] The present utility model is provided with two fixtures. The upper clamping plate is placed on both sides above the thin-layer PCB board. One end of the lower clamping plate is pressed down by stretching the output end of the telescopic rod, causing the lower clamping plate to rotate, and the other end of the lower clamping plate approaches the upper clamping plate to complete the clamping of the thin-layer PCB board. Then, the transfer of the thin-layer PCB board is completed through the hydraulic rod and the support plate. During the clamping process, the thin-layer PCB board will not be deformed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained according to the provided drawings.

[0015] Figure 1 It is the overall structural schematic diagram provided by the present utility model;

[0016] Figure 2 It is the structural schematic diagram of the fixture in the present utility model;

[0017] Figure 3 It is in the present utility model Figure 2 partial structural schematic diagram;

[0018] Figure 4 It is the present utility model Figure 3 structural schematic diagram after the telescopic rod contracts.

[0019] The reference numerals in the drawings are respectively represented as follows:

[0020] 1, support; 2, hydraulic rod; 3, support plate; 4, cylinder; 5, upper clamping plate; 6, lower clamping plate; 7, spring; 8, telescopic rod; 9, soft pad; 10, anti-slip groove; 11, airbag layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] As Figure 1 and Figure 2 shown, the present invention provides a PCB board automatic clamping device, which mainly clamps the PCB board through the rotating lower clamping plate 6.

[0023] The PCB board automatic clamping device includes a bracket 1. The bottom of the bracket 1 is connected with a support plate 3 through a hydraulic rod 2. The hydraulic rod 2 moves left and right at the bottom of the bracket 1 through a slider. The bottom of the support plate 3 is connected with two symmetrically arranged clamps.

[0024] The clamp includes a cylinder body 4 with an open bottom. On one side of the cylinder body 4, an upper clamping plate 5 is fixedly connected. At the bottom of the upper clamping plate 5, a lower clamping plate 6 hinged to the bottom of the cylinder body 4 is provided. A spring 7 is fixedly connected between the lower clamping plate 6 and the inner side wall of the cylinder body 4. Through the pulling force of the spring 7, one end of the lower clamping plate 6 is arranged inside the cylinder body 4, and a telescopic rod 8 is fixedly connected to the bottom of the inner wall of the cylinder body 4.

[0025] Wherein, the output end of the telescopic rod 8 stretches and presses down one end of the lower clamping plate 6, causing the lower clamping plate 6 to rotate, and the other end of the lower clamping plate 6 approaches the upper clamping plate 5.

[0026] For thin-layer PCB boards with uneven surfaces, the vacuum adsorption clamp will affect the adsorption effect due to poor sealing. The existing mechanical clamps clamp the PCB board by moving the two clamping plates towards the middle. However, for thin-layer PCB boards with uneven surfaces, when the two clamping plates move towards the middle, the thin-layer PCB board is prone to deformation and is not easy to clamp. Therefore, it is necessary to develop a clamping device that can facilitate the clamping of thin-layer PCB boards with uneven surfaces.

[0027] In this embodiment, by providing two clamps, the upper clamping plate 5 is placed on both sides above the thin-layer PCB board. The output end of the telescopic rod 8 stretches to press down one end of the lower clamping plate 6, causing the lower clamping plate 6 to rotate, and the other end of the lower clamping plate 6 approaches the upper clamping plate 5 to complete the clamping of the thin-layer PCB board. Then, the transfer of the thin-layer PCB board is completed through the hydraulic rod 2 and the support plate 3. During the clamping process, the thin-layer PCB board will not be deformed.

[0028] During actual use, 1. The initial state of the clamp is as Figure 4As shown in the figure, the position of the support plate 3 is adjusted by moving the slider left and right at the bottom of the bracket 1, and the support plate 3 is moved downward by the hydraulic rod 2;

[0029] 2. Place the two upper clamping plates 5 on both sides above the thin-layer PCB board. By stretching the output end of the telescopic rod 8, one end of the lower clamping plate 6 is pressed down to make the lower clamping plate 6 rotate, and the other end of the lower clamping plate 6 approaches the upper clamping plate 5, as Figure 3 shown, and the clamping of the thin-layer PCB board is completed.

[0030] After that, by contracting the output end of the telescopic rod 8 to restore to the initial state, under the action of the elastic force of the spring 7, one end of the lower clamping plate 6 rotates and restores to the initial state.

[0031] Since the distance between the two jigs matches the width of the thin-layer PCB board, the thin-layer PCB board will not bend during the clamping process.

[0032] As a preferred embodiment of this embodiment, as Figure 1 shown, one of the jigs slides left and right at the bottom of the support plate 3 through a slider, thereby adjusting the distance between the two jigs. It can adapt to thin-layer PCB boards of different widths.

[0033] As Figure 3 shown, in order to improve the protection of the thin-layer PCB board and improve the clamping stability, soft pads 9 are fixedly connected to the bottom of the upper clamping plate 5 and the top of the lower clamping plate 6, and a plurality of anti-slip grooves 10 are provided on the soft pads 9.

[0034] The soft pad 9 is made of an elastic material, such as rubber, silica gel, etc., to protect the thin-layer PCB board, and the anti-slip grooves 10 increase the friction force and improve the clamping stability of the device.

[0035] The upper clamping plate 5 and the lower clamping plate 6 are both connected to the soft pad 9 through an airbag layer 11. The airbag layer 11 is inflated and deflated through an air charging pipe, and the distance between the two soft pads 9 on the same jig is adjusted by the inflation and deflation of the airbag layer 11.

[0036] By inflating and deflating the airbag layer 11 to adjust the distance between the two soft pads 9, it can adapt to thin-layer PCB boards of different thicknesses. At the same time, the airbag layer 11 can buffer the clamping force and prevent the thin-layer PCB board from being squeezed and deformed.

[0037] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present application.

Claims

1. A PCB board automatic clamping device, characterized in that: It comprises a bracket (1), the bottom of the bracket (1) is connected to a support plate (3) via a hydraulic rod (2), the hydraulic rod (2) moves left and right at the bottom of the bracket (1) via a slider, and the bottom of the support plate (3) is connected to two symmetrically arranged clamps; The clamp comprises a cylinder (4) with an opening at the bottom, an upper clamp (5) fixedly connected to one side of the cylinder (4), a lower clamp (6) hinged to the bottom of the cylinder (4) is provided at the bottom of the upper clamp (5), a spring (7) is fixedly connected between the lower clamp (6) and the inner wall of the cylinder (4), one end of the lower clamp (6) is arranged inside the cylinder (4) by the pulling force of the spring (7), and a telescopic rod (8) is fixedly connected to the bottom of the inner wall of the cylinder (4); The output end of the telescopic rod (8) stretches and presses down one end of the lower clamping plate (6), causing the lower clamping plate (6) to rotate, thereby causing the other end of the lower clamping plate (6) to approach the upper clamping plate (5).

2. The automatic PCB board clamping device according to claim 1, characterized in that: One of the clamps slides left and right on the bottom of the support plate (3) via a slider, thereby adjusting the distance between the two clamps.

3. The automatic PCB board clamping device according to claim 2 is characterized in that: The bottom of the upper clamping plate (5) and the top of the lower clamping plate (6) are both fixedly connected with a soft pad (9), and a plurality of anti-slip grooves (10) are provided on the soft pad (9).

4. The automatic PCB board clamping device according to claim 3 is characterized in that: The upper clamp (5) and the lower clamp (6) are both connected to the soft cushion (9) via an air bag layer (11); the air bag layer (11) is inflated and deflated via an inflation tube; and the distance between the two soft cushions (9) on the same clamp is adjusted by the inflation and deflation of the air bag layer (11).

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