Circuit board bending performance testing device

Abstract

The utility model discloses a circuit board bending performance testing device, which relates to the technical field of circuit board testing and comprises a working table, two symmetrically arranged first placing grooves are arranged at the upper end of the working table, two groups of symmetrically arranged sliding grooves are arranged at the upper end of the working table, and each group of sliding grooves is arranged on the front side and the rear side of the corresponding first placing groove. A bending protection mechanism is arranged at the upper end of the workbench and comprises two symmetrically-arranged rotating plates, a circuit board clamping mechanism is arranged on the outer side of the upper end of each rotating plate and used for clamping a circuit board, and the bending protection mechanism is used for protecting the circuit board in the bending process. According to the utility model, the bending protection mechanism can be used for completing the protection action when the circuit board is fractured during the bending performance test, so that the fractured circuit board is prevented from flying out of the workbench due to large stress, and the potential safety hazard is reduced.

Description

Technical Field

[0001] This utility model relates to the field of circuit board testing technology, specifically a circuit board bending performance testing device. Background Technology

[0002] A printed circuit board (PCB) is a substrate that connects electronic components together. In production, bending tests are commonly used to evaluate the bending strength and plastic deformation of PCBs.

[0003] For example, utility model patent CN222188963U discloses a circuit board bending performance testing device, which relates to the field of circuit board testing technology. This device addresses the problem that circuit boards are prone to breakage during bending performance testing, causing fragments to fly and affecting safety, and that the device does not easily automatically raise the protective plate to protect the tested circuit board during the downward movement of the pressure plate. The device includes a workbench and a mounting plate; a bracket is fixedly installed on the top of the workbench, and the inner ends of connecting gears are respectively meshed and connected to a first toothed plate, while the outer ends of the connecting gears are respectively meshed and connected to a second toothed plate. A displacement detection plate is placed at the lower end of the pressure groove. The displacement detection plate of the utility model is always in contact with the bottom surface of the circuit board to facilitate the measurement of the bending displacement of the circuit board under different downward pressures, which improves the practicality of the device. When the device performs bending performance testing on the circuit board by moving the pressure plate downward, the two sets of protective plates can automatically move upward to protect the circuit board, which improves the protective performance of the device. However, there are still loopholes in the protection process of the two sets of protective plates. The protective plates can only protect the upper part of the front and rear sides of the workbench, and cannot completely block the area of ​​the circuit board where the bending performance test is performed, which reduces the protective effect. Therefore, we propose a circuit board bending performance testing device. Utility Model Content

[0004] The purpose of this invention is to provide a circuit board bending performance testing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a circuit board bending performance testing device, comprising a workbench, with two symmetrically arranged first placement slots on the upper end of the workbench, and two sets of symmetrically arranged sliding grooves on the upper end of the workbench, each set of sliding grooves being arranged on the front and rear sides of the corresponding first placement slots. A bending protection mechanism is provided on the upper end of the workbench, the bending protection mechanism comprising two symmetrically arranged rotating plates, each of the rotating plates having a circuit board clamping mechanism on its outer upper end, the circuit board clamping mechanism being used for clamping the circuit board, and the bending protection mechanism being used for protecting the circuit board during the bending process.

[0006] Preferably, the bending protection mechanism further includes a first U-shaped plate, on both sides of which are provided a second placement groove. Each second placement groove has a follower shaft rotatably connected to its inner wall via a bearing. The front end of each follower shaft passes through the first U-shaped plate. Two symmetrically arranged first bevel gears are fixedly installed at the outer end of the follower shaft. Each first bevel gear has a second bevel gear meshing with its inner end. A rotating rod is fixedly installed at the outer end of each second bevel gear. A threaded groove is provided at the outer end of the rotating rod. A transparent protective shell is threadedly connected to the outer end of the rotating rod. The lower end of the transparent protective shell is slidably connected to a worktable.

[0007] Preferably, a rotating shaft is fixedly installed on the surface of each rotating plate and the rotating shaft passes through the rotating plate. A rotating gear is fixedly installed at the front end of each rotating shaft. Two rotating gears mesh with each other. A second pulley is fixedly installed at the front end of each rotating gear. A first pulley is provided on the upper part of the second pulley. A belt is sleeved between the first pulley and the second pulley. A follower shaft is fixedly installed at the rear end of each first pulley. The output end of a stepper motor is fixedly installed at the rear end of the rotating shaft on the right side. A worktable is fixedly installed at the front end of the stepper motor.

[0008] Preferably, the circuit board clamping mechanism includes a second U-shaped plate, a rotating plate is fixedly installed at the lower end of the second U-shaped plate, a main electric push rod is fixedly installed at the middle of the upper end of the second U-shaped plate, the output end of the main electric push rod passes through the second U-shaped plate, and a clamping plate is fixedly installed at the output end of the main electric push rod.

[0009] Preferably, each corner of the lower end of the workbench is fixedly equipped with a bracket, and each bracket is fixedly equipped with an anti-slip pad at its lower end.

[0010] Preferably, each of the two transparent protective shells has two symmetrically arranged sliders fixedly installed at one end close to each other, and each slider has a sliding groove slidably connected to its outer end.

[0011] Preferably, the outer end of the rotating shaft is rotatably connected to the worktable via a bearing, and the rotating plate is disposed in the first placement groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model realizes that the bending protection mechanism can complete the protective action when the circuit board breaks during bending performance testing, preventing the broken circuit board from flying off the workbench due to high stress, thus reducing safety hazards.

[0014] 2. This utility model can start the main electric push rod through the circuit board clamping mechanism. The output end of the main electric push rod drives the clamping plate to move downward. When the lower end of the clamping plate abuts against the upper end of the circuit board on the worktable, the circuit board can be clamped, which improves the accuracy of circuit board bending performance testing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the workbench structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the bending protection mechanism of this utility model;

[0018] Figure 4 This utility model Figure 3 Enlarged view of the structure of section A in the middle;

[0019] Figure 5 This is a schematic diagram of the circuit board clamping mechanism of this utility model.

[0020] In the diagram: 1. Workbench; 2. First placement slot; 3. Slide groove; 4. Support; 5. Anti-slip mat; 6. Bending protection mechanism; 61. First U-shaped plate; 62. Second placement slot; 63. Follower shaft; 64. First bevel gear; 65. Second bevel gear; 66. Rotating rod; 67. Transparent protective shell; 68. Slider; 69. First pulley; 610. Second pulley; 611. Belt; 612. Rotating gear; 613. Rotating shaft; 614. Stepper motor; 615. Rotating plate; 7. Circuit board clamping mechanism; 71. Second U-shaped plate; 72. Main electric push rod; 73. Clamping plate. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5This utility model provides a technical solution: a circuit board bending performance testing device, including a workbench 1, with two symmetrically arranged first placement slots 2 on the upper end of the workbench 1, and two sets of symmetrically arranged sliding grooves 3 on the upper end of the workbench 1, each set of sliding grooves 3 being arranged on the front and rear sides of the corresponding first placement slots 2, and a bending protection mechanism 6 being provided on the upper end of the workbench 1, the bending protection mechanism 6 including two symmetrically arranged rotating plates 615, each rotating plate 615 having a circuit board clamping mechanism 7 on the outer side of its upper end, the circuit board clamping mechanism 7 being used for the circuit board clamping action, and the bending protection mechanism 6 being used for the protection action during the bending process of the circuit board.

[0023] In this embodiment, the bending protection mechanism 6 further includes a first U-shaped plate 61. The first U-shaped plate 61 has second placement grooves 62 on both sides. The inner wall of each second placement groove 62 is rotatably connected to a follower shaft 63 via a bearing. The front end of each follower shaft 63 passes through the first U-shaped plate 61. Two symmetrically arranged first bevel gears 64 are fixedly installed at the outer end of the follower shaft 63. The inner end of each first bevel gear 64 is meshed with a second bevel gear 65. The outer end of each second bevel gear 65 is fixedly installed with a rotating rod 66. The outer end of the rotating rod 66 has a threaded groove. The outer end of the rotating rod 66 is threadedly connected to a transparent protective shell 67. The lower end of the transparent protective shell 67 is slidably connected to the worktable 1.

[0024] Specifically, each rotating gear 612 drives the second pulley 610 to rotate. The second pulley 610 drives the first pulley 69 to rotate via the belt 611. The first pulley 69 drives the follower shaft 63 to rotate. The follower shaft 63 drives the first bevel gear 64 to rotate. The first bevel gear 64 drives the second bevel gear 65 to rotate. The second bevel gear 65 drives the rotating rod 66 to rotate. During the rotation of the two rotating rods 66 on the same side, the transparent protective shell 67 moves. The two symmetrically arranged transparent protective shells 67 move closer to each other. During the movement of the transparent protective shells 67, the slider 68 slides within the groove 3.

[0025] In this embodiment, a rotating shaft 613 is fixedly installed on the surface of each rotating plate 615 and the rotating shaft 613 passes through the rotating plate 615. A rotating gear 612 is fixedly installed at the front end of each rotating shaft 613. The two rotating gears 612 mesh with each other. A second pulley 610 is fixedly installed at the front end of each rotating gear 612. A first pulley 69 is provided on the upper part of the second pulley 610. A belt 611 is sleeved between the first pulley 69 and the second pulley 610. A follower shaft 63 is fixedly installed at the rear end of each first pulley 69. The output end of a stepper motor 614 is fixedly installed at the rear end of the right rotating shaft 613. The worktable 1 is fixedly installed at the front end of the stepper motor 614.

[0026] Specifically, when the stepper motor 614 is started, the output of the stepper motor 614 drives the right rotating shaft 613 to rotate counterclockwise. The right rotating shaft 613 drives the right rotating gear 612 to rotate, and the right rotating gear 612 drives the left rotating gear 612 to rotate clockwise. At this time, each rotating shaft 613 drives its connected rotating plate 615 to rotate, and the two rotating plates 615 move closer to each other.

[0027] In this embodiment, the circuit board clamping mechanism 7 includes a second U-shaped plate 71, a rotating plate 615 is fixedly installed at the lower end of the second U-shaped plate 71, a main electric push rod 72 is fixedly installed at the middle of the upper end of the second U-shaped plate 71, the output end of the main electric push rod 72 passes through the second U-shaped plate 71, and a clamping plate 73 is fixedly installed at the output end of the main electric push rod 72.

[0028] Specifically, the main electric push rod 72 can be activated by the circuit board clamping mechanism 7. The output end of the main electric push rod 72 drives the clamping plate 73 to move downward. When the lower end of the clamping plate 73 abuts against the upper end of the circuit board on the worktable 1, the circuit board can be clamped, which improves the accuracy of the circuit board bending performance test.

[0029] In this embodiment, each corner of the lower end of the workbench 1 is fixedly equipped with a bracket 4, and each bracket 4 is fixedly equipped with an anti-slip pad 5 at its lower end.

[0030] Specifically, the support bracket 4 and the anti-slip pad 5 can be used to provide stable support for the workbench 1.

[0031] In this embodiment, two transparent protective shells 67 are each fixedly installed with two symmetrically arranged sliders 68 at one end close to each other, and the outer end of each slider 68 is slidably connected to a groove 3.

[0032] Specifically, during the movement of the transparent protective shell 67, the slider 68 is driven to slide within the groove 3.

[0033] In this embodiment, the outer end of the rotating shaft 613 is rotatably connected to the workbench 1 via a bearing, and the rotating plate 615 is disposed in the first placement groove 2.

[0034] Specifically, ensure that the rotating shaft 613 does not interfere with the worktable 1 during rotation.

[0035] Working Principle: When performing a bending performance test on the circuit board, the circuit board can be placed on the upper center of the two rotating plates 615. Next, the circuit board is clamped by two symmetrically arranged circuit board clamping mechanisms 7. During this process, the main electric push rod 72 is activated, and its output end drives the clamping plate 73 to move downwards. Once the lower end of the clamping plate 73 abuts against the upper end of the circuit board on the worktable 1, the stepper motor 614 is activated. Its output end drives the right rotating shaft 613 to rotate counterclockwise. The right rotating shaft 613 drives the right rotating gear 612 to rotate, and the right rotating gear 612 drives the left rotating gear 612 to rotate clockwise. At this time, each rotating shaft 613 carries... Each rotating plate 615 connected to it rotates, and the two rotating plates 615 move closer to each other. Each rotating gear 612 drives the second pulley 610 to rotate. The second pulley 610 drives the first pulley 69 to rotate via the belt 611. The first pulley 69 drives the follower shaft 63 to rotate. The follower shaft 63 drives the first bevel gear 64 to rotate. The first bevel gear 64 drives the second bevel gear 65 to rotate. The second bevel gear 65 drives the rotating rod 66 to rotate. During the rotation of the two rotating rods 66 on the same side, the transparent protective shell 67 moves and the two symmetrically arranged transparent protective shells 67 move closer to each other. During the movement of the transparent protective shell 67, the slider 68 slides in the slide groove 3.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the bending performance of a circuit board, comprising a worktable (1), characterized in that: The workbench (1) has two symmetrically arranged first placement slots (2) at its upper end. The workbench (1) has two sets of symmetrically arranged sliding grooves (3) at its upper end. Each set of sliding grooves (3) is arranged on the front and rear sides of the corresponding first placement slot (2). The workbench (1) has a bending protection mechanism (6) at its upper end. The bending protection mechanism (6) includes two symmetrically arranged rotating plates (615). Each rotating plate (615) has a circuit board clamping mechanism (7) on its upper outer side. The circuit board clamping mechanism (7) is used for clamping the circuit board. The bending protection mechanism (6) is used for protecting the circuit board during the bending process.

2. The device for testing the bending performance of a circuit board according to claim 1, wherein: The bending protection mechanism (6) further includes a first U-shaped plate (61), and a second placement groove (62) is provided on both sides of the first U-shaped plate (61). The inner wall of each second placement groove (62) is rotatably connected to a follower shaft (63) through a bearing. The front end of each follower shaft (63) passes through the first U-shaped plate (61). Two symmetrically arranged first bevel gears (64) are fixedly installed on the outer end of the follower shaft (63). A second bevel gear (65) is meshed with the inner end of each first bevel gear (64). A rotating rod (66) is fixedly installed on the outer end of each second bevel gear (65). A threaded groove is provided on the outer end of the rotating rod (66). A transparent protective shell (67) is threadedly connected to the outer end of the rotating rod (66). The lower end of the transparent protective shell (67) is slidably connected to the worktable (1).

3. The device for testing the bending performance of a circuit board according to claim 2, wherein: Each of the rotating plates (615) is fixedly mounted with a rotating shaft (613) and the rotating shaft (613) passes through the rotating plate (615). Each of the rotating shafts (613) is fixedly mounted with a rotating gear (612) at the front end. The two rotating gears (612) mesh with each other. Each of the rotating gears (612) is fixedly mounted with a second pulley (610) at the front end. A first pulley (69) is provided on the upper part of the second pulley (610). A belt (611) is sleeved between the first pulley (69) and the second pulley (610). Each of the first pulleys (69) is fixedly mounted with a follower shaft (63) at the rear end. The output end of a stepper motor (614) is fixedly mounted at the rear end of the rotating shaft (613) on the right side. The worktable (1) is fixedly mounted at the front end of the stepper motor (614).

4. The device for testing the bending performance of a circuit board according to claim 1, wherein: The circuit board clamping mechanism (7) includes a second U-shaped plate (71), a rotating plate (615) is fixedly installed at the lower end of the second U-shaped plate (71), a main electric push rod (72) is fixedly installed at the middle of the upper end of the second U-shaped plate (71), the output end of the main electric push rod (72) passes through the second U-shaped plate (71), and a clamping plate (73) is fixedly installed at the output end of the main electric push rod (72).

5. The device for testing the bending performance of a circuit board according to claim 1, wherein: Each corner of the workbench (1) is fixedly equipped with a bracket (4), and each bracket (4) is fixedly equipped with an anti-slip pad (5) at its lower end.

6. The device for testing the bending performance of a circuit board according to claim 2, wherein: Two transparent protective shells (67) are fixedly installed with two symmetrically arranged sliders (68) at one end close to each other, and each slider (68) has a sliding groove (3) slidably connected to its outer end.

7. The device for testing the bending performance of a circuit board according to claim 3, wherein: The outer end of the rotating shaft (613) is rotatably connected to the worktable (1) via a bearing, and the rotating plate (615) is set in the first placement groove (2).

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