General jig for engraving printed circuit board

Abstract

The utility model discloses a universal jig for printed circuit board fine carving, which relates to the technical field of circuit board processing and comprises a base, an anti-skid plate fixed in the middle of the top of the base, guide rails connected to two sides of the top of the base, a sliding seat connected inside the guide rails, a supporting seat penetrating through the top of the sliding seat, and a tension spring connected between the supporting seat and the sliding seat. A pressing wheel penetrates through one side of the supporting seat, and the top of the supporting seat is connected with a support. The pressing frame is far away from a plate through the sliding base, the supporting base, the tension spring, the pressing wheel and the pull-up handle, abrasion is avoided, then the sliding base slides to drive the supporting base, the tension spring and the pressing wheel to move, the supporting base is pulled through the tension spring while the supporting base moves, and therefore the supporting base and the pressing wheel bear downward pressure all the time. Meanwhile, the number and the size of the tension springs are larger than those of springs, so that the supporting seat is prevented from being pulled upwards when the handle is pulled upwards, the pressing wheel is tightly attached to the plate, and the bent plate is flattened in cooperation with displacement of the pressing wheel; and the plate is difficult to wear in the leveling process.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to a universal jig for fine carving of printed circuit boards. Background Art

[0002] Printed circuit boards, also known as PCB boards, printed circuit boards, printed circuit boards, etc., are the support bodies of electronic components. At the same time, copper wires embedded in the circuit boards can transmit current or electrical signals to electronic components. They have occupied an absolute dominant position in the electronics industry. When PCB boards are produced in the scientific research or product trial production stages, they are usually engraved on the copper-clad board using a precision engraving machine with a small drill bit to make a printed circuit board. During this process, a jig is needed to limit the plate.

[0003] A universal jig for precision carving of printed circuit boards with application number 201920402723.2 includes a base plate, two bases symmetrically arranged on the base plate, a slide rail arranged on the base, a leveling fixture that can slide on the slide rail, and multiple magnet groups arranged in the center of the base plate. The magnet group is used to adsorb the leveling fixture to reinforce the processed product. Three positioning columns are provided on both sides of the base plate, the slide rail design of the base, and the built-in magnet group design of the base plate are used to fix the processed product and level the bent circuit board panel to avoid warping of the board surface causing steps and poor burrs. The magnet group adsorbs the leveling fixture, and the leveling fixture is combined with the slide rail to achieve the universality of the jig. The universal jig can realize the processing of different types of circuit board products, reduce the cost of making special jigs, has high versatility, reduces the frequency of replacing jigs for processing different types of products, and improves production efficiency.

[0004] This technical solution uses a sliding leveling fixture to level the circuit board, and then tightens the nut to complete the limit. First, if the surface of the leveling fixture is smooth, the friction is small, resulting in poor clamping effect, and the plate is easy to slide and displace during the fine carving process. If the surface of the leveling fixture is rough, the friction is large, which makes it easy to cause wear on the surface of the plate during the sliding leveling process, and the staff needs to manually tighten the threaded structure, which is a cumbersome operation. Utility Model Content

[0005] Based on this, the purpose of the present invention is to provide a universal jig for fine carving of printed circuit boards to solve the technical problems mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a universal jig for precision carving of printed circuit boards, comprising a base, an anti-skid plate fixed in the middle of the top of the base, guide rails connected to both sides of the top of the base, a slide seat connected inside the guide rail, and a support seat passing through the top of the slide seat, a tension spring connected between the support seat and the slide seat, a pressure wheel passing through one side of the support seat, a bracket connected to the top of the support seat, and a spring sleeved on the outside of the bracket, and a pressure frame connected to one side of the bracket.

[0007] By adopting the above technical solution, the handle is pulled up to move the pressing frame away from the plate to avoid wear, and then the sliding seat drives the support seat, tension spring and pressing wheel to move. While the support seat moves, the tension spring pulls the support seat, so that the support seat and pressing wheel are always under downward pressure. At the same time, since the number and size of the tension springs are larger than the springs, the support seat is prevented from being pulled up together when the handle is pulled up, and the pressing wheel is then pressed against the plate, and the displacement of the pressing wheel is used to flatten the bent plate; after the plate is flattened, stop pulling the handle, and the pressing frame is driven downward by the spring at this time. After the pressing frame moves down, it presses the plate, and at the same time, the anti-slip plate is in contact with the entire bottom surface of the plate. The large contact area leads to large friction, thereby effectively preventing the plate from shifting during the fine carving process.

[0008] Furthermore, the cross section of the slide is in a convex shape, and the slide is slidably connected to the guide rail.

[0009] By adopting the above technical solution, the slide seat slides along the guide rail under force, and the sliding of the slide seat drives the support seat, the tension spring and the pressure wheel to move horizontally.

[0010] Furthermore, a hollow protrusion is provided at the bottom of the support seat, and the hollow protrusion at the bottom of the support seat is slidably connected to the sliding seat.

[0011] By adopting the above technical solution, the staff pulls up the bracket to raise the support seat, and guides the support seat through the hollow protrusion at the bottom of the support seat.

[0012] Furthermore, a shaft sleeve is connected inside the support seat, and the pressure wheel is rotatably connected to the support seat through the shaft sleeve.

[0013] By adopting the above technical solution, the pressing wheel is in close contact with the plate, and the bent plate is flattened by cooperating with the displacement of the pressing wheel, thereby avoiding poor fine carving effect caused by bending of the plate during the fine carving process.

[0014] Furthermore, the pressing frame is slidably connected to the bracket, and the pressing frame is connected to the bottom of the spring.

[0015] By adopting the above technical solution, the staff pulls up the handle to move the pressing frame away from the plate to avoid wear. At the same time, the pressing frame compresses the spring to facilitate subsequent automatic reset.

[0016] Furthermore, the bottom of the pressing frame and the bottom of the pressing wheel are in the same horizontal plane, and the size of the tension spring is larger than the size of the spring.

[0017] By adopting the above technical solution, the pressing frame is driven downward by the spring, and the pressing frame presses the plate after moving downward, thereby effectively preventing the plate from shifting during the fine carving process.

[0018] Furthermore, the slide seat, support seat, tension spring, bracket and spring are each provided in two groups, and the two groups of slide seats, support seats, tension springs, brackets and springs are mirror-imaged, with six tension springs forming a group and four springs forming a group.

[0019] By adopting the above technical solution, since the number and size of the tension springs are larger than the springs, the support seat is not pulled up together when the handle is pulled up, thereby making the pressure wheel close to the plate.

[0020] Furthermore, two guide rails, two pressure wheels and two pressure frames are provided, and the two guide rails, two pressure wheels and two pressure frames are symmetrically distributed.

[0021] By adopting the above technical solution, two clamps are provided, which makes it easy to clamp and limit the two sides of the plate, effectively avoiding the bending of the plate and the displacement of the plate during the fine carving process.

[0022] Furthermore, a handle is fixed on the top of the press frame, and the handle is in an "n" shape.

[0023] By adopting the above technical solution, the staff pulls up the handle to move the pressing frame away from the plate to avoid wear. At the same time, the pressing frame compresses the spring. Then the staff pulls the handle horizontally to make the slide slide along the guide rail under force.

[0024] Furthermore, a non-slip pad is fixed to the bottom of the press frame by means of strong glue and is made of rubber material.

[0025] By adopting the above technical solution, the friction between the pressing frame and the plate is increased by setting the anti-slip pad, which further improves the clamping effect and effectively avoids the displacement of the plate during the fine carving process.

[0026] In summary, the present invention has the following beneficial effects:

[0027] 1. The utility model uses a sliding seat, a support seat, a tension spring, and a pressure wheel. The handle is pulled up to make the pressing frame move away from the plate to avoid wear. Then, the sliding seat drives the support seat, the tension spring and the pressure wheel to move. While the support seat moves, the tension spring pulls the support seat, so that the support seat and the pressure wheel are always under downward pressure. At the same time, because the number and size of the tension springs are larger than the springs, the support seat is prevented from being pulled up together when the handle is pulled up, and the pressure wheel is pressed against the plate. The displacement of the pressure wheel can flatten the bent plate. It is difficult to cause wear on the plate during the leveling process.

[0028] 2. The utility model uses the arrangement of the bracket, spring, pressure frame and anti-slide plate. After the plate is leveled, stop pulling the handle. At this time, the spring drives the pressure frame to move down. After the pressure frame moves down, it presses the plate. At the same time, the anti-slide plate contacts the entire bottom surface of the plate. The large contact area increases the friction force, thereby effectively preventing the plate from shifting during the fine carving process; the clamping is stable to prevent the plate from shifting;

[0029] 3. The utility model increases the friction between the pressing frame and the plate by setting the anti-slip pad, further improves the clamping effect, and effectively avoids the displacement of the plate during the fine carving process; increasing the friction further avoids the displacement of the plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural diagram of the utility model;

[0031] Figure 2 This is a schematic diagram of the structure of the press frame of the present invention when viewed from above;

[0032] Figure 3 This is a schematic diagram of the cross-sectional structure of the support seat of the present utility model;

[0033] Figure 4 This is a schematic diagram of the explosion structure of the support seat of the utility model.

[0034] In the figure: 1. Base; 2. Anti-skid plate; 3. Guide rail; 4. Sliding seat; 5. Support seat; 6. Tension spring; 7. Pressure wheel; 8. Bracket; 9. Spring; 10. Pressure frame; 11. Anti-skid pad. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] The following describes an embodiment of the present invention based on its overall structure. Example 1:

[0037] A universal jig for precision engraving printed circuit boards, such as Figures 1-4As shown, it includes a base 1, with an anti-skid plate 2 fixed in the middle of the top of the base 1, and the anti-skid plate 2 is in contact with the entire bottom surface of the plate. The large contact area leads to greater friction, thereby effectively preventing the plate from shifting during the fine carving process; guide rails 3 are connected to both sides of the top of the base 1, and a slide 4 is connected inside the guide rail 3. The cross-section of the slide 4 is in the shape of a "convex" character, and the slide 4 is slidably connected to the guide rail 3, and the sliding of the slide 4 drives the support seat 5, the tension spring 6 and the pressure wheel 7 to move horizontally; a support seat 5 is passed through the top of the slide 4, and a hollow protrusion is provided at the bottom of the support seat 5. The hollow protrusion at the bottom of the support seat 5 is slidably connected to the slide 4. The staff pulls up the bracket 8 to lift the support seat 5, and guides the support seat 5 through the hollow protrusion at the bottom of the support seat 5. ; A tension spring 6 is connected between the support seat 5 and the slide seat 4, which pulls the support seat 5 through the tension spring 6, so that the support seat 5 and the pressure wheel 7 are always under downward pressure; a pressure wheel 7 runs through one side of the support seat 5, and a shaft sleeve is connected inside the support seat 5. The pressure wheel 7 is rotatably connected to the support seat 5 through the shaft sleeve, and the pressure wheel 7 is close to the plate and cooperates with the displacement of the pressure wheel 7 to flatten the bent plate; a bracket 8 is connected to the top of the support seat 5, and a spring 9 is sleeved on the outside of the bracket 8. A pressure frame 10 is connected to one side of the bracket 8, and the pressure frame 10 is slidably connected to the bracket 8. The pressure frame 10 is connected to the bottom of the spring 9. The bottom of the pressure frame 10 and the bottom of the pressure wheel 7 are in the same horizontal plane, and the pressure frame 10 is driven downward by the spring 9, and the pressure frame 10 presses the plate after moving downward.

[0038] See Figures 1-4 In the above embodiment, there are two guide rails 3, pressure wheels 7 and pressure frames 10, and the two guide rails 3, pressure wheels 7 and pressure frames 10 are symmetrically distributed. There are two groups of slides 4, support seats 5, tension springs 6, brackets 8 and springs 9. The two groups of slides 4, support seats 5, tension springs 6, brackets 8 and springs 9 are mirror-imaged, and two parts are provided to form two clamps, so as to facilitate clamping and limiting the two sides of the plate, effectively avoiding the bending of the plate and displacement of the plate during the fine carving process; six tension springs 6 are in a group, and four springs 9 are in a group. The size of the tension spring 6 is larger than the size of the spring 9. Since the number and size of the tension spring 6 are larger than the spring 9, it is avoided that the support seat 5 is pulled up together when the handle is pulled up, so that the pressure wheel 7 is close to the plate. Example 2:

[0039] On the basis of the above embodiment 1, the following settings are adopted for the convenience of operation.

[0040] See Figures 1-4 In the above embodiment, a handle is fixed on the top of the pressing frame 10, and the handle is in the shape of an "n". The staff pulls up the handle to move the pressing frame 10 away from the plate to avoid wear. At the same time, the pressing frame 10 compresses the spring 9. Then the staff pulls the handle in the horizontal direction, causing the slide 4 to slide along the guide rail 3 under force. Example 3:

[0041] On the basis of the above embodiment 1, in order to further increase the friction force, the following settings are now adopted.

[0042] See Figure 2 and Figure 4 In the above embodiment, a non-slip pad 11 is fixed to the bottom of the pressing frame 10 by means of strong glue. The non-slip pad 11 is made of rubber material. The setting of the non-slip pad 11 increases the friction between the pressing frame 10 and the plate, thereby effectively preventing the plate from shifting during the fine carving process.

[0043] The implementation principle of the present utility model is as follows: first, the staff pulls up the bracket 8 to raise the support seat 5, thereby moving the two pressing wheels 7 and the pressing frame 10 upwards, and then the staff places the plate to be carved on the anti-slip plate 2, and then the staff stops contacting the two pressing wheels 7, thereby completing the loading work;

[0044] When the tool is loaded, the staff pulls up the handle to make the pressing frame 10 away from the plate to avoid wear. At the same time, the pressing frame 10 compresses the spring 9. Then, the staff pulls the handle in the horizontal direction, so that the slide 4 is forced to slide along the guide rail 3, and the sliding of the slide 4 drives the support seat 5, the tension spring 6 and the pressure wheel 7 to move horizontally. While the support seat 5 moves, the tension spring 6 pulls the support seat 5, so that the support seat 5 and the pressure wheel 7 are always under downward pressure. At the same time, because the number and size of the tension spring 6 are larger than the spring 9, it is prevented from pulling the handle up together with the support seat 5, thereby making the pressure wheel 7 close to the plate, and cooperating with the displacement of the pressure wheel 7 to flatten the bent plate. After the plate is flattened, the staff stops pulling the handle. At this time, the spring 9 drives the pressing frame 10 to move down. After the pressing frame 10 moves down, it presses the plate. At the same time, the anti-slip plate 2 contacts the entire surface of the bottom of the plate. The contact area is large and the friction force is large. The setting of the anti-slip pad 11 increases the friction force between the pressing frame 10 and the plate, thereby effectively preventing the plate from moving during the fine carving process.

[0045] After the fine carving work is completed, the staff pulls up the bracket 8 again to raise the support seat 5, so that the two pressure wheels 7 and the pressure frame 10 move up, thereby separating the pressure wheels 7 and the pressure frame 10 from the plate. At this time, the staff can directly remove the plate to complete the unloading work.

[0046] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A universal jig for fine engraving of printed circuit boards, comprising a base (1), characterized in that: An anti-skid plate (2) is fixed in the middle of the top of the base (1), and guide rails (3) are connected to both sides of the top of the base (1), a slide seat (4) is connected inside the guide rail (3), and a support seat (5) is passed through the top of the slide seat (4), a tension spring (6) is connected between the support seat (5) and the slide seat (4), a pressure wheel (7) is passed through one side of the support seat (5), a bracket (8) is connected to the top of the support seat (5), and a spring (9) is sleeved on the outside of the bracket (8), and a pressure frame (10) is connected to one side of the bracket (8).

2. The universal jig for precision engraving of printed circuit boards according to claim 1, characterized in that: The cross section of the slide seat (4) is in a convex shape, and the slide seat (4) is slidably connected to the guide rail (3).

3. The universal jig for precision engraving of printed circuit boards according to claim 2, characterized in that: The bottom of the support seat (5) is provided with a hollow protrusion, and the hollow protrusion at the bottom of the support seat (5) is slidably connected to the slide seat (4).

4. The universal jig for precision engraving of printed circuit boards according to claim 3, characterized in that: The support seat (5) is internally connected to a shaft sleeve, and the pressure wheel (7) is rotatably connected to the support seat (5) via the shaft sleeve.

5. The universal jig for precision engraving of printed circuit boards according to claim 1, characterized in that: The pressing frame (10) is slidably connected to the bracket (8), and the pressing frame (10) is connected to the bottom of the spring (9).

6. The universal jig for precision engraving of printed circuit boards according to claim 5, characterized in that: The bottom of the pressing frame (10) and the bottom of the pressing wheel (7) are in the same horizontal plane, and the size of the tension spring (6) is larger than the size of the spring (9).

7. The universal jig for precision carving of printed circuit boards according to claim 6, characterized in that: The slide seat (4), support seat (5), tension spring (6), bracket (8) and spring (9) are each provided in two groups, and the two groups of slide seats (4), support seat (5), tension spring (6), bracket (8) and spring (9) are mirror-imaged, with six tension springs (6) forming one group and four springs (9) forming one group.

8. The universal jig for precision engraving of printed circuit boards according to claim 5, characterized in that: The guide rail (3), the pressing wheel (7) and the pressing frame (10) are each provided with two, and the two guide rails (3), the pressing wheel (7) and the pressing frame (10) are symmetrically distributed.

9. The universal jig for precision carving of printed circuit boards according to claim 1, characterized in that: A handle is fixed on the top of the pressing frame (10), and the handle is in an "n" shape.

10. The universal jig for precision carving of printed circuit boards according to claim 1, characterized in that: The bottom of the press frame (10) is fixed with an anti-skid pad (11) by means of adhesion using strong glue, and the anti-skid pad (11) is made of rubber material.

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