Circuit board limiting device

Abstract

The invention discloses a circuit board limiting device, which belongs to the technical field of auxiliary equipment for circuit board processing and comprises a pair of driving units and a pair of limiting units. The two driving units are both arranged on a workbench of the circuit board drilling machine, each driving unit comprises a plurality of linear mechanisms arranged in parallel, and any linear mechanism of one driving unit is perpendicular to any linear mechanism of the other driving unit. The two limiting units are arranged on one sides of the driving units respectively, each limiting unit comprises a plurality of transverse rods, and a plurality of limiting mechanisms are assembled on the peripheral sides of the transverse rods in the axial direction of the transverse rods and used for limiting a plurality of circuit boards which are placed on a base plate on the workbench and arranged in a rectangular array. According to the circuit board drilling machine, when the circuit board is drilled, the circuit board can be positioned without replacing a base plate or pasting an adhesive tape, and the circuit boards of different specifications can be conveniently and rapidly switched in the circuit board drilling machine.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary equipment for circuit board processing, and in particular to a circuit board limiting device. Background Art

[0002] The circuit board production process includes multiple processing steps, one of which is the drilling of the circuit board. Its main purpose is to achieve electrical connection and component installation. Currently, the drilling process of the circuit board is mainly completed by a circuit board drilling machine. After the circuit board is placed in the specified position in the machine, the circuit board drilling machine will automatically drill the holes. Before drilling, the circuit board needs to be positioned first. In order to avoid damaging the workbench of the circuit board drilling machine during drilling, a pad is placed on the workbench first, and then positioning pins are driven into the pad to match the positioning holes reserved on the circuit board, so that the positioning holes of the circuit board can be placed on the positioning pins, so that the position of the circuit board is accurate and convenient for drilling. Another existing technology does not use positioning holes, but fixes the circuit board by sticking tape. However, the circuit board drilling machine sometimes needs to replace circuit boards of different specifications for drilling. These circuit boards have different sizes and shapes. When replacing, it is necessary to remove the original positioning pins and drive in new positioning pins, or replace another pad with positioning pins in different positions. Regardless of whether circuit boards of different specifications are replaced, if tape is used for fixing, it is necessary to repeatedly stick and remove the tape. Therefore, the various circuit board limiting methods in the existing technology have overly complicated operating steps in the drilling process. Summary of the Invention

[0003] In response to the above-mentioned defects, the present invention provides a circuit board limiting device, which eliminates the need to position the circuit board by replacing pads or applying tape when drilling holes in the circuit board, thereby facilitating rapid switching of circuit boards of different specifications in the circuit board drilling machine.

[0004] In order to achieve the purpose of the present invention, the following technologies are proposed: A circuit board limiting device, comprising: A pair of drive units are both arranged on a workbench of the circuit board drilling machine, each drive unit includes a plurality of linear mechanisms arranged in parallel, and any linear mechanism of one drive unit is perpendicular to any linear mechanism of the other drive unit; A pair of limit units are respectively arranged on one side of each driving unit, and each limit unit includes a plurality of cross bars arranged in parallel and respectively arranged on one side of the slider of each linear mechanism. Any cross bar of a limit unit is perpendicular to any cross bar of another limit unit, and the lowest point of the cross bar of one limit unit is higher than the highest point of the cross bar of the other limit unit. A plurality of limit mechanisms are assembled on the outer peripheral side of the cross bar along the axial direction of the cross bar, which is used to limit a plurality of circuit boards arranged in a rectangular array placed on the pad on the workbench.

[0005] Furthermore, an inverted L-shaped plate is assembled on the slider of the linear mechanism, and each cross bar is fixed to the outer side surface of the vertical portion of each inverted L-shaped plate.

[0006] Furthermore, an n-shaped frame is provided at the other end of the crossbar, a shaft is fixed between opposite surfaces of two vertical parts of the n-shaped frame, and a roller is rotatably fitted on the outer circumference of the shaft.

[0007] Furthermore, the limiting mechanism includes a partition plate and a guide block respectively assembled on the upper and lower ends of the outer peripheral side of the crossbar, and the lower end surface of the partition plate abuts against the upper end surface of the pad during operation.

[0008] Furthermore, the crossbar is provided with a plurality of square grooves which all pass through the circumference thereof in the vertical direction, and the square grooves are arranged in an array along the axial direction of the crossbar.

[0009] Furthermore, the upper end surface of the partition is formed with an arc surface that matches the outer peripheral side surface of the cross bar, and a number of plug-in blocks that match the square groove are provided at the upper end of the arc surface of the partition. The lower end surface of the guide block is also formed with an arc surface that matches the outer peripheral side surface of the cross bar, and the arc surface of the guide block is provided with a slot that matches the plug-in block. When the limiting mechanism is assembled, the plug-in blocks are sequentially inserted into the square groove and the slot.

[0010] Furthermore, slopes are respectively provided on both sides of the upper end of the guide block.

[0011] Furthermore, both sides of each circuit board are respectively limited by two limiting mechanisms of one limiting unit, and both ends of each circuit board are respectively limited by two limiting mechanisms of another limiting unit.

[0012] Furthermore, the circuit board limiting device also includes a plurality of stabilizing blocks respectively arranged at one end of each n-type frame, the stabilizing block includes a counterweight block, and one end of the counterweight block is provided with a pair of side plates for abutting against the two ends of the outer peripheral side of the roller during operation.

[0013] The beneficial effects of this technical solution are: Through the circuit board limiting device of the present application, the position of the cross bar of the limiting unit can be adjusted by the driving unit, and the limiting mechanism can be assembled at different positions of the cross bar according to the number and size of the circuit boards, so that there is no need to re-insert positioning nails before drilling the circuit board, nor is there any need to position the circuit board by replacing the pad or applying tape. The limiting mechanism is simple to assemble and can quickly switch between circuit boards of different specifications in the circuit board drilling machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of the embodiment of the present application as a whole when working is shown.

[0015] Figure 2 A three-dimensional diagram of the driving unit and the limiting unit of an embodiment of the present application is shown.

[0016] Figure 3 The local three-dimensional diagram of the limiting unit in the embodiment of the present application is shown. Figure 1 .

[0017] Figure 4 Shows an embodiment of the present application Figure 3 Magnified view of part A.

[0018] Figure 5 The local three-dimensional diagram of the limiting unit in the embodiment of the present application is shown. Figure 2 .

[0019] Figure 6 Shows an embodiment of the present application Figure 5 Magnified view of part B.

[0020] Figure 7 The local three-dimensional diagram of the limiting unit in the embodiment of the present application is shown. Figure 3 , and is a local three-dimensional Figure 2 A perspective viewed from the side and below.

[0021] Figure 8 Shows an embodiment of the present application Figure 7 Magnified view of part C.

[0022] Figure 9 A cross-sectional view of a stabilizing block according to an embodiment of the present application is shown.

[0023] Figure 10 A three-dimensional layout diagram of the pad and circuit board according to an embodiment of the present application is shown.

[0024] Markings in the figure: drive unit 1, linear mechanism 11, inverted L-shaped plate 12, screw 13, limit unit 2, cross bar 21, N-shaped frame 22, roller 23, square groove 24, partition 25, guide block 27, insert block 26, slot 28, stabilizing block 3, counterweight block 31, side plate 32, filler 33, workbench 4, pad 5, circuit board 6. DETAILED DESCRIPTION

[0025] The present application will be further described below with reference to the accompanying drawings and examples.

[0026] like Figures 1 to 9 The circuit board limiting device shown in FIG. 1 includes a pair of driving units 1, a pair of limiting units 2, and a plurality of stabilizing blocks 3. Figure 10 As shown, the circuit boards 6 in this embodiment are distributed in a rectangular array of three rows and three columns and are placed on the pad 5.

[0027] like Figure 1 、 Figure 2 As shown, the two drive units 1 are arranged on the workbench 4 of the circuit board drilling machine, and each drive unit 1 includes a plurality of linear mechanisms 11 fixed to the upper end surface of the workbench 4 and arranged in parallel. Any linear mechanism 11 of one drive unit 1 is perpendicular to any linear mechanism 11 of another drive unit 1. In this embodiment, the linear mechanism 11 adopts an electric linear module, and the slider of the linear mechanism 11 is equipped with an inverted L-shaped plate 12. Specifically, the upper end surface of the slider of the linear mechanism 11 is provided with a plurality of screw holes, and the horizontal part of the inverted L-shaped plate 12 is provided with a plurality of through holes respectively matching the screw holes. By using screws 13 to screw the through holes and the screw holes, the inverted L-shaped plate 12 can be fixed to the slider of the linear mechanism 11.

[0028] like Figures 1 to 8As shown, two limiting units 2 are respectively arranged on one side of each driving unit 1, and each limiting unit 2 includes a plurality of parallel cross bars 21 respectively fixed to the outer side surface of the vertical portion of each inverted L-shaped plate 12. Specifically, one end of the cross bar 21 is welded to the outer side surface of the vertical portion of the inverted L-shaped plate 12. Any cross bar 21 of one limiting unit 2 is perpendicular to any cross bar 21 of another limiting unit 2, and the lowest point of the cross bar 21 of one limiting unit 2 is higher than the highest point of the cross bar 21 of the other limiting unit 2. The crossbar 21 is provided with an n-shaped frame 22 at the other end. A shaft is fixed between the opposite surfaces of the two vertical parts of the n-shaped frame 22. The outer peripheral side of the shaft is rotated with a roller 23. The crossbar 21 is provided with a plurality of square grooves 24 that penetrate the peripheral side thereof in the vertical direction. The square grooves 24 are arranged in an array along the axial direction of the crossbar 21. The outer peripheral side of the crossbar 21 is equipped with a plurality of limiting mechanisms along the axial direction of the crossbar 21, which are used to limit the plurality of circuit boards 6 arranged in a rectangular array on the pad 5 on the workbench 4. Each circuit board The two sides of 6 are respectively limited by the two limiting mechanisms of a limiting unit 2, and the two ends of each circuit board 6 are respectively limited by the two limiting mechanisms of another limiting unit 2. The limiting mechanisms include a partition 25 and a guide block 27 respectively assembled on the upper and lower ends of the outer peripheral side of the cross bar 21. The lower end surface of the partition 25 abuts against the upper end surface of the pad 5 during operation. The upper end surface of the partition 25 is formed with an arc surface that matches the outer peripheral side surface of the cross bar 21. The upper end of the arc surface of the partition 25 is provided with a number of plugs that match the square groove 24. 26. The lower end surface of the guide block 27 is also formed with an arc surface that matches the outer peripheral side surface of the cross bar 21. The arc surface of the guide block 27 is provided with a slot 28 that matches the insert block 26. When the limiting mechanism is assembled, the insert block 26 is sequentially inserted into the square groove 24 and the slot 28. The upper end of the guide block 27 is provided with slopes on both sides to facilitate the placement of the circuit board 6 when the limiting unit 2 is in place. More specifically, the insert block 26 and the slot 28 should be made of a material with a large friction coefficient, such as rubber or silicone, to prevent slipping.

[0029] like Figure 1 、 Figure 9 As shown, each stabilizing block 3 is mounted at one end of each n-shaped frame 22. The stabilizing block 3 includes a counterweight 31. One end of the counterweight 31 is provided with a pair of side plates 32 for contacting the outer ends of the roller 23 during operation. Specifically, the counterweight 31 is coated with a high-density filler 33, such as lead. The stabilizing block 3 improves the stability of the limiting unit 2 in the event of vibrations generated by drilling.

[0030] In this embodiment, a single drive unit 1 includes four linear mechanisms 11, and correspondingly, a single position-limiting unit 2 includes four crossbars 21. These components are fully utilized when limiting the position of nine circuit boards 6. In other cases, for example, if the circuit boards 6 to be drilled are arranged in a rectangular array of two rows and two columns, for a total of four, one linear mechanism 11 and its connected components for each drive unit 1, as well as one crossbar 21 and its connected components for each position-limiting unit 2, can be left idle.

[0031] Working method: First, the limiting unit 2 should be assembled. According to the position where the circuit board 6 is to be placed, after any circuit board 6 is placed, a limiting mechanism on each of the four cross bars 21 should limit the circuit board 6. Preferably, the position of the limiting mechanism should be located at or closest to the middle of the side of the circuit board 6. Since the cross bars 21 of the two limiting units 2 are of different heights, Figure 6 It can be seen that the partitions 25 and guide blocks 27 used on the cross bars 21 of the two limit units 2 are obviously different. Before assembly, each cross bar 21 can be moved to a position outside the pad 5 through each linear mechanism 11, so that the insert block 26 on the partition 25 can be easily inserted into the square groove 24 from below and further inserted into the slot 28. After assembly, each cross bar 21 is moved to a predetermined position through the linear mechanism 11.

[0032] Next, each circuit board 6 is placed, and each stabilizing block 3 is placed. The order of these two steps can be interchangeable.

[0033] After the drilling is completed, since there are gaps between the circuit boards 6 and the partition plate 25 does not cover all the gaps, the circuit boards 6 can be directly taken out.

[0034] The above are only some of the embodiments listed in this application and are not intended to limit this application.

Claims

1. A circuit board limiting device, characterized in that: include: A pair of drive units (1) are both arranged on a workbench (4) of a circuit board drilling machine, each drive unit (1) includes a plurality of linear mechanisms (11) arranged in parallel, and any linear mechanism (11) of one drive unit (1) is perpendicular to any linear mechanism (11) of another drive unit (1); A pair of limiting units (2) are respectively arranged on one side of each driving unit (1), each limiting unit (2) includes a plurality of cross bars (21) arranged in parallel and respectively arranged on one side of a slider of each linear mechanism (11), any cross bar (21) of one limiting unit (2) is perpendicular to any cross bar (21) of another limiting unit (2), and the lowest point of the cross bar (21) of one limiting unit (2) is higher than the highest point of the cross bar (21) of the other limiting unit (2), and a plurality of limiting mechanisms are assembled on the outer peripheral side of the cross bar (21) along the axial direction of the cross bar (21), for limiting a plurality of circuit boards (6) arranged in a rectangular array and placed on a pad (5) on a workbench (4).

2. The circuit board limiting device according to claim 1, characterized in that: An inverted L-shaped plate (12) is mounted on the slider of the linear mechanism (11), and each crossbar (21) is fixed to the outer side surface of the vertical portion of each inverted L-shaped plate (12).

3. The circuit board limiting device according to claim 1, characterized in that: An n-shaped frame (22) is provided at the other end of the crossbar (21), a shaft is fixed between opposite surfaces of two vertical portions of the n-shaped frame (22), and a roller (23) is rotatably fitted on the outer circumference of the shaft.

4. The circuit board limiting device according to claim 1, characterized in that: The limiting mechanism includes a partition plate (25) and a guide block (27) respectively mounted on the upper and lower ends of the outer peripheral side of the crossbar (21). The lower end surface of the partition plate (25) abuts against the upper end surface of the pad (5) during operation.

5. The circuit board limiting device according to claim 4, characterized in that: The crossbar (21) is provided with a plurality of square grooves (24) which all penetrate the circumference thereof in a vertical direction, and the square grooves (24) are arranged in an array along the axial direction of the crossbar (21).

6. The circuit board limiting device according to claim 5, characterized in that: The upper end surface of the partition (25) is formed with an arc surface that matches the outer peripheral side surface of the cross bar (21), and the upper end of the arc surface of the partition (25) is provided with a plurality of plug blocks (26) that match the square groove (24). The lower end surface of the guide block (27) is also formed with an arc surface that matches the outer peripheral side surface of the cross bar (21), and the arc surface of the guide block (27) is provided with a slot (28) that matches the plug block (26). When the limiting mechanism is assembled, the plug block (26) is sequentially inserted into the square groove (24) and the slot (28).

7. The circuit board limiting device according to claim 4, characterized in that: The upper end of the guide block (27) is provided with slopes on both sides.

8. The circuit board limiting device according to claim 1, characterized in that: Both sides of each circuit board (6) are respectively limited by two limiting mechanisms of one limiting unit (2), and both ends of each circuit board (6) are respectively limited by two limiting mechanisms of another limiting unit (2).

9. The circuit board limiting device according to claim 3, characterized in that: The invention also includes a plurality of stabilizing blocks (3) respectively provided at one end of each n-shaped frame (22), wherein the stabilizing blocks (3) include a counterweight block (31), and one end of the counterweight block (31) is provided with a pair of side plates (32) for contacting the two ends of the outer peripheral side of the roller (23) during operation.

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