Circuit board limiting device

Abstract

The application discloses a circuit board limiting device, and belongs to the technical field of auxiliary equipment for circuit board processing. The device comprises a pair of driving units and a pair of limiting units. The two driving units are arranged on the workbench of a circuit board drilling machine. Each driving unit comprises a plurality of parallel linear mechanisms. 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 side of each driving unit. Each limiting unit comprises a plurality of cross bars. A plurality of limiting mechanisms are arranged on the outer circumferential side of the cross bars along the axial direction of the cross bars. The limiting mechanisms are used for limiting a plurality of circuit boards arranged in a rectangular array on the cushion plate on the workbench. The application enables the circuit board to be positioned without replacing the cushion plate or sticking adhesive tape when the circuit board is drilled, and facilitates the quick switching of circuit boards of different specifications in the circuit board drilling machine.

Description

TECHNICAL FIELD

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

[0002] The production process of circuit board includes multiple processing techniques, one of which is drilling holes in the circuit board, which is mainly to achieve electrical connection and component installation. The drilling process of the circuit board is currently mainly completed by a circuit board drilling machine. After the circuit board is placed at a designated position in the machine, the circuit board drilling machine will automatically drill holes.

[0003] Before drilling, the circuit board needs to be positioned first. In order to avoid damage to the workbench of the circuit board drilling machine, a backing plate is placed on the workbench first, and then a positioning pin is punched into the backing plate to match the positioning hole reserved on the circuit board, so that the circuit board positioning hole can be sleeved on the positioning pin, making the position of the circuit board accurate and facilitating drilling. Another existing technology does not use positioning holes, but uses adhesive tape to fix the circuit board. However, the circuit board drilling machine sometimes needs to replace circuit boards of different specifications for drilling process. These circuit boards have different sizes and shapes. When replacing, the original positioning pin needs to be removed and a new positioning pin needs to be punched, or another backing plate with different positioning pins needs to be replaced. Moreover, whether or not to replace circuit boards of different specifications, if the adhesive tape fixing method is used, the adhesive tape needs to be repeatedly pasted and removed. Therefore, the existing technologies for limiting the circuit board have too complex operation steps in the drilling process. SUMMARY

[0004] In view of the above defects, the present application provides a circuit board limiting device, which can position the circuit board without replacing the backing plate or pasting the adhesive tape when drilling the circuit board, facilitating quick switching of circuit boards of different specifications in the circuit board drilling machine.

[0005] In order to achieve the purpose of the present application, the following technologies are adopted:

[0006] A circuit board limiting device comprises:

[0007] A pair of drive units are arranged on the workbench of the circuit board drilling machine, each drive unit comprising a plurality of parallel straight line mechanisms, and any straight line mechanism of one drive unit is perpendicular to any straight line mechanism of the other drive unit.

[0008] A pair of limiting units are respectively arranged on one side of each driving unit, each limiting unit comprises a plurality of horizontal rods which are arranged in parallel and are respectively arranged on one side of the slider of each linear mechanism, any horizontal rod of one limiting unit is perpendicular to any horizontal rod of the other limiting unit, and the lowest point of the horizontal rod of one limiting unit is higher than the highest point of the horizontal rod of the other limiting unit, a plurality of limiting mechanisms are assembled on the outer circumferential side of the horizontal rod along the axial direction of the horizontal rod, and are used for limiting a plurality of circuit boards arranged in a rectangular array on the cushion plate on the workbench.

[0009] Further, the slider of the linear mechanism is assembled with an inverted L-shaped plate, and each horizontal rod is fixed to the outer side surface of the vertical part of each inverted L-shaped plate.

[0010] Further, the other end of the horizontal rod is provided with an n-shaped frame, the opposite surfaces between the two vertical parts of the n-shaped frame are fixed with a shaft rod, and the outer circumferential side of the shaft rod is rotatably matched with a roller.

[0011] Further, the limiting mechanism comprises a baffle and a guide block assembled on the upper and lower ends of the outer circumferential side of the horizontal rod, and the lower end surface of the baffle abuts against the upper end surface of the cushion plate during work.

[0012] Further, the horizontal rod is provided with a plurality of square grooves which penetrate the circumferential side of the horizontal rod along the vertical direction, and the square grooves are arranged in an array along the axial direction of the horizontal rod.

[0013] Further, the upper end surface of the baffle is shaped as an arc surface matched with the outer circumferential surface of the horizontal rod, the upper end of the arc surface of the baffle is provided with a plurality of insertion blocks matched with the square grooves, and the lower end surface of the guide block is also shaped as an arc surface matched with the outer circumferential surface of the horizontal rod, the arc surface of the guide block is provided with an insertion slot matched with the insertion block, and the insertion block is sequentially arranged in the square groove and the insertion slot during assembly of the limiting mechanism.

[0014] Further, the upper end of the guide block is provided with a slope surface on both sides.

[0015] Further, the two sides of each circuit board are limited by two limiting mechanisms of one limiting unit, and the two ends of each circuit board are limited by two limiting mechanisms of the other limiting unit.

[0016] Further, the circuit board limiting device further comprises a plurality of stabilizing blocks arranged at one end of each n-shaped frame, the stabilizing block comprises a counterweight block, and one end of the counterweight block is provided with a pair of side plates for abutting against the outer circumferential sides of the two ends of the roller during work.

[0017] The beneficial effects of the technical scheme are:

[0018] The circuit board limiting device of this application allows for the adjustment of the position of the crossbar of the limiting unit by the drive unit, and the assembly of the limiting mechanism at different positions of the crossbar according to the number and size of the circuit boards. This eliminates the need to re-drill positioning pins before drilling the circuit board, and also eliminates the need to replace the pad or apply tape to position the circuit board. Furthermore, the assembly of the limiting mechanism is simple, and it enables the quick switching of different specifications of circuit boards within the circuit board drilling machine. Attached Figure Description

[0019] Figure 1 A perspective view of the entire embodiment of this application in operation is shown.

[0020] Figure 2 A perspective view of the driving unit and the limiting unit according to an embodiment of this application is shown.

[0021] Figure 3 A partial three-dimensional representation of the limiting unit according to an embodiment of this application is shown. Figure 1 .

[0022] Figure 4 An embodiment of this application is shown. Figure 3 Enlarged view of part A.

[0023] Figure 5 A partial three-dimensional representation of the limiting unit according to an embodiment of this application is shown. Figure 2 .

[0024] Figure 6 An embodiment of this application is shown. Figure 5 Enlarged view of part B.

[0025] Figure 7 A partial three-dimensional representation of the limiting unit according to an embodiment of this application is shown. Figure 3 And is a partial three-dimensional part of the aforementioned limiting unit. Figure 2 A perspective viewed from the side and below.

[0026] Figure 8 An embodiment of this application is shown. Figure 7 Enlarged view of part C.

[0027] Figure 9 A cross-sectional view of the stabilizing block according to an embodiment of this application is shown.

[0028] Figure 10 A perspective view showing the layout of the pad and circuit board according to an embodiment of this application is shown.

[0029] The following components are marked in the diagram: Drive unit 1, linear mechanism 11, inverted L-shaped plate 12, screw 13, limit unit 2, crossbar 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, worktable 4, pad 5, circuit board 6. Detailed Implementation

[0030] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0031] like Figures 1-9 The circuit board limiting device shown includes a pair of driving units 1, a pair of limiting units 2, and multiple stabilizing blocks 3. Figure 10 As shown, in this embodiment, the circuit board 6 is arranged in a rectangular array of three rows and three columns and placed on the pad 5.

[0032] like Figure 1 , Figure 2 As shown, both drive units 1 are mounted on the worktable 4 of the circuit board drilling machine. Each drive unit 1 includes multiple linear mechanisms 11 fixed to the upper surface of the worktable 4 and arranged in parallel. Any linear mechanism 11 of one drive unit 1 is perpendicular to any linear mechanism 11 of the other drive unit 1. In this embodiment, the linear mechanism 11 adopts an electric linear module. The slider of the linear mechanism 11 is equipped with an inverted L-shaped plate 12. Specifically, the upper surface of the slider of the linear mechanism 11 is provided with multiple screw holes, and the horizontal part of the inverted L-shaped plate 12 is provided with multiple through holes that match the screw holes respectively. By using screws 13 to screw the through holes and screw holes, the inverted L-shaped plate 12 can be fixed on the slider of the linear mechanism 11.

[0033] like Figures 1-8As shown, two limiting units 2 are respectively arranged on one side of each driving unit 1, each limiting unit 2 includes a plurality of horizontal rods 21 arranged in parallel and fixed to the outer side of the vertical part of each inverted L-shaped plate 12, specifically, one end of the horizontal rod 21 is welded to the outer side of the vertical part of the inverted L-shaped plate 12, any one horizontal rod 21 of one limiting unit 2 is perpendicular to any one horizontal rod 21 of the other limiting unit 2, and the lowest point of the horizontal rod 21 of one limiting unit 2 is higher than the highest point of the horizontal rod 21 of the other limiting unit 2, the other end of the horizontal rod 21 is provided with an n-shaped frame 22, the opposite faces between the two vertical parts of the n-shaped frame 22 are fixed with a shaft, the outer circumferential side of the shaft is rotatably matched with a roller 23, the horizontal rod 21 is provided with a plurality of square grooves 24 penetrating the circumferential side thereof in the vertical direction, each square groove 24 is arranged in an axial array along the horizontal rod 21, and the outer circumferential side of the horizontal rod 21 is assembled with a plurality of limiting mechanisms in the axial direction of the horizontal rod 21, for limiting a plurality of circuit boards 6 arranged in a rectangular array placed on the cushion plate 5 on the workbench 4, the two sides of each circuit board 6 are respectively limited by two limiting mechanisms of one limiting unit 2, and the two ends of each circuit board 6 are respectively limited by two limiting mechanisms of the other limiting unit 2, the limiting mechanism includes a partition plate 25 and a guide block 27 assembled to the upper and lower ends of the outer circumferential side of the horizontal rod 21, the lower end face of the partition plate 25 abuts against the upper end face of the cushion plate 5 during work, the upper end face of the partition plate 25 is shaped with a curved surface matching the outer circumferential side of the horizontal rod 21, a plurality of insertion blocks 26 matching the square grooves 24 are arranged on the curved surface of the partition plate 25, the lower end face of the guide block 27 is also shaped with a curved surface matching the outer circumferential side of the horizontal rod 21, the curved surface of the guide block 27 is provided with an insertion groove 28 matching the insertion block 26, during assembly, the insertion block 26 is sequentially arranged in the square groove 24 and the insertion groove 28, the upper end of the guide block 27 is provided with a slope face on both sides, facilitating the placement of the circuit board 6 when the limiting unit 2 is in place, more specifically, the insertion block 26 and the insertion groove 28 should be made of a material with a large friction coefficient, such as rubber or silicone, to avoid sliding.

[0034] As shown in Figure 1 , Figure 9 each stabilizing block 3 is arranged 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 abutting against the outer circumferential sides of both ends of the roller 23 during work, specifically, the counterweight 31 is covered with a filler 33 with high density, such as lead. Through the stabilizing block 3, the stability of the limiting unit 2 can be improved when the drill hole vibrates or the like.

[0035] In the embodiment, each driving unit 1 includes four linear mechanisms 11, and correspondingly, each limiting unit 2 includes four crossbars 21, which are fully used when limiting the nine circuit boards 6. In other cases, for example, when the circuit boards 6 to be drilled are arranged in a rectangular array of two rows and two columns, i.e., four in total, one linear mechanism 11 of each driving unit 1 and the components connected thereto, as well as one crossbar 21 of each limiting unit 2 and the components connected thereto, can be idle.

[0036] Working mode:

[0037] First, the limiting units 2 are assembled. According to the positions where the circuit boards 6 are to be placed, any one of the circuit boards 6 is placed so that the four crossbars 21 are respectively positioned by one limiting mechanism, and preferably, the positions of the limiting mechanisms are at or closest to the middle of one side of the circuit board 6. Since the heights of the crossbars 21 of the two limiting units 2 are different, the crossbars 21 of the two limiting units 2 are moved to the positions outside the base plate 5 by the linear mechanisms 11 before assembly, so that the insertion blocks 26 on the partition plates 25 are easily inserted into the square grooves 24 from below and further inserted into the insertion grooves 28. After assembly, the crossbars 21 are moved to the predetermined positions by the linear mechanisms 11. Figure 6 As can be seen, the partition plates 25 and the guide blocks 27 used on the crossbars 21 of the two limiting units 2 are obviously different, and before assembly, the crossbars 21 are moved to the positions outside the base plate 5 by the linear mechanisms 11, so that the insertion blocks 26 on the partition plates 25 are easily inserted into the square grooves 24 from below and further inserted into the insertion grooves 28. After assembly, the crossbars 21 are moved to the predetermined positions by the linear mechanisms 11.

[0038] Next, the circuit boards 6 are placed, and the stabilizing blocks 3 are placed. The order of the two steps can be replaced.

[0039] After drilling, since there are spaces between the circuit boards 6 and the partition plates 25 do not cover all the space, the circuit boards 6 can be directly taken out.

[0040] The above is only part of the embodiments of the present application and is not intended to limit the present application.

Claims

1. A circuit board limiting device, characterized in that, include: A pair of drive units (1) are both set on the worktable (4) of the circuit board drilling machine. Each drive unit (1) includes multiple parallel linear mechanisms (11). Any linear mechanism (11) of one drive unit (1) is perpendicular to any linear mechanism (11) of the other drive unit (1). A pair of limiting units (2) are respectively located on one side of each driving unit (1). Each limiting unit (2) includes multiple parallel horizontal bars (21) respectively located on one side of the slider of each linear mechanism (11). Any horizontal bar (21) of one limiting unit (2) is perpendicular to any horizontal bar (21) of the other limiting unit (2). The lowest point of the horizontal bar (21) of one limiting unit (2) is higher than the highest point of the horizontal bar (21) of the other limiting unit (2). Multiple limiting mechanisms are mounted on the outer periphery of the horizontal bar (21) along the axial direction of the horizontal bar (21) for limiting the multiple circuit boards (6) arranged in a rectangular array on the pad (5) on the worktable (4).

2. The circuit board limiting device according to claim 1, characterized in that, The slider of the linear mechanism (11) is equipped with an inverted L-shaped plate (12), and each crossbar (21) is fixed to the outer side of the vertical part of each inverted L-shaped plate (12).

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

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

5. The circuit board limiting device according to claim 4, characterized in that, The crossbar (21) has multiple square grooves (24) that run vertically through its periphery, 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 face of the partition (25) is formed with an arc surface that matches the outer periphery of the crossbar (21). The upper end of the arc surface of the partition (25) is provided with several inserts (26) that match the square groove (24). The lower end face of the guide block (27) is also formed with an arc surface that matches the outer periphery of the crossbar (21). The arc surface of the guide block (27) is provided with slots (28) that match the inserts (26). When the limiting mechanism is assembled, the inserts (26) are sequentially inserted into the square groove (24) and the slots (28).

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

8. The circuit board limiting device according to claim 1, characterized in that, Each circuit board (6) is limited on both sides by two limiting mechanisms of a limiting unit (2), and each circuit board (6) is limited at both ends by two limiting mechanisms of another limiting unit (2).

9. The circuit board limiting device according to claim 3, characterized in that, It also includes multiple stabilizing blocks (3) respectively located at one end of each n-type 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 abutting against the two ends of the outer periphery of the roller (23) during operation.

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