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 performance detection, and comprises a test board, two vertical plates are arranged at the upper end of the test board in a sliding manner, the two vertical plates are distributed in a bilateral symmetry manner, and a driving mechanism capable of driving the two vertical plates to move relatively is arranged on the test board. Openings are formed in the upper ends of the two vertical plates, a longitudinally-arranged strip-shaped mounting plate is rotationally arranged in each opening through a rotating shaft, strip-shaped mounting grooves are formed in the two opposite ends of the two strip-shaped mounting plates, a pressing mechanism is arranged in each strip-shaped mounting groove, and a horizontally-arranged abutting plate is further arranged between the two strip-shaped mounting plates; the circuit board bending device has the advantages that people can visually check the bending arc of the circuit board conveniently, so that the bending performance of the circuit board is obtained, precise instruments are not needed, the use cost is reduced, the two ends of the circuit board are evenly distributed, pressed and clamped, the circuit board is prevented from flying out when broken and hurting people, and the circuit board bending device is convenient for people to use.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board performance detection, in particular to a circuit board bending performance testing device. Background Art

[0002] The circuit board can be called a printed circuit board or printed circuit board. The English name is PCB, FPC circuit board. FPC circuit board is also called flexible circuit board. Flexible circuit board is a highly reliable and excellent flexible printed circuit board made of polyimide or polyester film as the base material.

[0003] After production, some circuit boards need to be tested for their bending performance. The bending test is mainly used to test the performance of materials when subjected to bending loads. Bending tests are often used in production to evaluate the bending strength and plastic deformation of materials. The bending test generates tensile stress on the convex side of the specimen and compressive stress on the concave side, which will produce a shear stress area along the center line. At present, when performing bending tests on circuit boards, the circuit boards are generally placed directly on a bending device for bending. When using this method, precision instruments are required to detect the bending curvature of the circuit board. The practical cost is high, and when the circuit board is broken, the broken part is easy to fly away, which can easily cause accidental injury to people. For this reason, we propose a circuit board bending performance testing device. Utility Model Content

[0004] The purpose of the utility model is to provide a device for testing the bending performance of a circuit board.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circuit board bending performance testing device, comprising a test bench, wherein the upper end of the test bench is slidingly provided with two vertical plates, and the two vertical plates are symmetrically distributed on the left and right, and the test bench is provided with a driving mechanism that can drive the two vertical plates to move relative to each other, the upper ends of the two vertical plates are provided with openings, and a longitudinally arranged strip mounting plate is provided in each of the openings through a rotating shaft, and the opposite ends of the two strip mounting plates are provided with strip mounting grooves, and each of the strip mounting grooves is provided with a clamping mechanism, and a horizontally arranged abutment plate is also provided between the two strip mounting plates, the upper surface of the abutment plate is flush with the lower side walls of the two strip mounting grooves, the rear end of the abutment plate is connected to a back plate by an elastic sliding mechanism, the lower end of the back plate is fixedly connected to the upper end of the test bench, and the front side of the back plate is provided with vertically arranged scale lines.

[0006] As a further solution of the present invention: the driving mechanism includes a servo motor, a bidirectional threaded rod, a gear pair and two slide blocks; a transversely arranged slide groove is provided on the upper surface of the test bench, and the slide groove is located between the two vertical plates; the two slide blocks are slidably arranged in the slide groove and are respectively fixedly connected to the bottom of the two vertical plates; the bidirectional threaded rod is transversely arranged in the slide groove, and the two ends of the rod wall of the bidirectional threaded rod are respectively threadedly connected to the two slide blocks; the two ends of the bidirectional threaded rod are respectively rotatably connected to the left and right sides of the slide groove through a first bearing; a cavity is provided inside the test bench, and the cavity is located on the right side of the slide groove; the right end of the bidirectional threaded rod extends into the cavity; the servo motor is fixedly arranged on the upper side of the test bench, and the output shaft of the servo motor extends into the cavity through the second bearing and transmits to the bidirectional threaded rod through the gear pair.

[0007] As a further solution of the present invention: the gear pair includes a first bevel gear and a second bevel gear, the first bevel gear is located in the cavity and fixedly connected to the lower end of the output shaft, the second bevel gear is located in the cavity and fixedly connected to the right end of the bidirectional threaded rod, and the first bevel gear and the second bevel gear are engaged with each other.

[0008] As a further solution of the present invention: the side surfaces of the two sliding blocks are both T-shaped, and the end surface of the sliding groove is T-shaped.

[0009] As a further solution of the present invention: the elastic sliding mechanism includes two round rods and two springs, and two round holes symmetrically distributed on the left and right sides are opened on the rear side of the upper end of the support plate. The two round rods are respectively slidably inserted into the two round holes, and each of the upper and lower ends of the round rods are fixed with fixed blocks, each of the fixed blocks is fixedly connected to the back plate, and the two springs are fixedly set on the lower side of the support plate and are respectively movably sleeved with the two round rods.

[0010] As a further solution of the present invention: the clamping mechanism includes a strip clamping plate and a hand-tightening bolt, the strip clamping plate is vertically slidably arranged in the strip mounting groove, the upper side wall of the strip mounting groove is provided with a threaded hole, the hand-tightening bolt is threadedly connected to the strip mounting plate through a thread, and the lower end of the hand-tightening bolt is rotatably connected to the strip clamping plate through a third bearing.

[0011] By adopting the above technical solution, compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. When the utility model is in use, the two ends of the circuit board to be tested are respectively inserted into the strip mounting grooves on the two strip mounting plates, and the two ends of the circuit board are pressed and fixed by the clamping mechanism, and then the servo motor is started, and the servo motor drives the two-way threaded rod to rotate through the gear pair, and the rotation of the two-way threaded rod drives the two sliders to move relative to each other, and the two sliders drive the two vertical plates to move relative to each other, and the two vertical plates drive the two ends of the circuit board to move toward the middle, so that the middle part of the circuit board bends downward. At the same time, the two strip mounting plates will rotate as the circuit board bends, and the middle bending part of the circuit board will push the abutment plate to move downward, thereby setting a scale line, and the bending curvature of the circuit board can be directly seen, which is convenient for people to detect the bending performance of the circuit board. Through the above device, it is convenient for people to intuitively check the bending curvature of the circuit board, thereby obtaining the bending performance of the circuit board, without the need for precision instruments, reducing the use cost, and the circuit board is pressed and clamped at both ends to avoid flying out when broken and causing harm to people, which is convenient for people to use.

[0013] Other advantages, objectives and features of the present invention will be described in part in the following description and will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view schematic diagram of an embodiment of the present utility model;

[0015] Figure 2 This is a front cross-sectional schematic diagram of an embodiment of the present utility model;

[0016] Figure 3 In the embodiment of the present utility model Figure 2 A magnified schematic diagram of part A;

[0017] Figure 4 It is a side sectional schematic diagram in an embodiment of the present utility model.

[0018] In the figure: 1. Test bench; 2. Vertical plate; 3. Strip mounting plate; 4. Abutment plate; 5. Back plate; 6. Scale line; 7. Servo motor; 8. Bidirectional threaded rod; 9. Slider; 10. First bevel gear; 11. Second bevel gear; 12. Round rod; 13. Spring; 14. Fixing block; 15. Strip pressure plate; 16. Tightening bolt. DETAILED DESCRIPTION

[0019] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0020] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] Please see the attached Figure 1 -Attached Figure 4 The utility model discloses a circuit board bending performance testing device, including a test bench 1, with two vertical plates 2 slidingly provided on the upper end of the test bench 1, and the two vertical plates 2 are symmetrically distributed on the left and right. A driving mechanism that can drive the two vertical plates 2 to move relative to each other is provided on the test bench 1, and the upper ends of the two vertical plates 2 are provided with openings, and a longitudinally arranged strip mounting plate 3 is provided in each opening through a rotating shaft. The opposite ends of the two strip mounting plates 3 are provided with strip mounting grooves, and each strip mounting groove is provided with a pressing mechanism. A horizontally arranged abutment plate 4 is also provided between the two strip mounting plates 3, and the upper surface of the abutment plate 4 is flush with the lower side walls of the two strip mounting grooves. The rear end of the abutment plate 4 is connected to a back plate 5 through an elastic sliding mechanism, and the lower end of the back plate 5 is fixedly connected to the upper end of the test bench 1, and the front side of the back plate 5 is provided with vertically arranged scale lines 6.

[0022] In one embodiment of the present utility model: the driving mechanism includes a servo motor 7, a bidirectional threaded rod 8, a gear pair and two sliders 9. A transversely arranged slide groove is provided on the upper surface of the test bench 1, and the slide groove is located between the two vertical plates 2. The two sliders 9 are both slidably arranged in the slide groove and are respectively fixedly connected to the bottom of the two vertical plates 2. The bidirectional threaded rod 8 is transversely arranged in the slide groove, and the two ends of the rod wall of the bidirectional threaded rod 8 are respectively threadedly connected to the two sliders 9. The two ends of the bidirectional threaded rod 8 are respectively rotatably connected to the left and right sides of the slide groove through the first bearing. A cavity is provided inside the test bench 1, and the cavity is located on the right side of the slide groove. The right end of the bidirectional threaded rod 8 extends into the cavity. The servo motor 7 is fixedly arranged on the upper side of the test bench 1, and the output shaft of the servo motor 7 extends into the cavity through the second bearing and transmits to the bidirectional threaded rod 8 through the gear pair.

[0023] In one embodiment of the present invention: the gear pair includes a first bevel gear 10 and a second bevel gear 11, the first bevel gear 10 is located in the cavity and is fixedly connected to the lower end of the output shaft; the second bevel gear 11 is located in the cavity and is fixedly connected to the right end of the bidirectional threaded rod 8, and the first bevel gear 10 and the second bevel gear 11 are engaged with each other.

[0024] In one embodiment of the present invention, the side surfaces of the two sliders 9 are both T-shaped, and the end surface of the chute is T-shaped, which can make the two sliders 9 more stable when sliding in the chute.

[0025] In one embodiment of the present invention: the elastic sliding mechanism includes two round rods 12 and two springs 13, and two round holes symmetrically distributed on the left and right sides are opened on the rear side of the upper end of the support plate 4. The two round rods 12 are slidably inserted into the two round holes respectively, and a fixing block 14 is fixedly provided at the upper and lower ends of each round rod 12. Each fixing block 14 is fixedly connected to the back plate 5. The two springs 13 are fixedly provided on the lower side of the support plate 4 and are movably sleeved on the two round rods 12 respectively. The two springs 13 can apply an upward elastic force to the support plate 4, so that the upper side of the support plate 4 is tightly against the bending position of the circuit board, and can be pushed downward by the circuit board. When the circuit board is disassembled, the support plate 4 can be directly reset by the provided spring 13, which is convenient for reuse.

[0026] In one embodiment of the present invention: the clamping mechanism includes a strip clamping plate 15 and a hand-tightening bolt 16, the strip clamping plate 15 is vertically slidably set in the strip mounting groove, the upper side wall of the strip mounting groove is provided with a threaded hole, the hand-tightening bolt 16 is threadedly connected to the strip mounting plate 3 through a thread, and the lower end of the hand-tightening bolt 16 is rotatably connected to the strip clamping plate 15 through a third bearing. By rotating the hand-tightening bolt 16, the strip clamping plate 15 can be driven to move downward, thereby being able to clamp the end of the circuit board to prevent the circuit board from breaking and flying out during testing.

[0027] Working principle:

[0028] When in use, the two ends of the circuit board to be tested are respectively inserted into the strip mounting grooves on the two strip mounting plates 3, and the two ends of the circuit board are pressed and fixed by the clamping mechanism, and then the servo motor 7 is started. The servo motor 7 drives the bidirectional threaded rod 8 to rotate through the gear pair. The bidirectional threaded rod 8 rotates to drive the two sliders 9 to move relative to each other, and the two sliders 9 drive the two vertical plates 2 to move relative to each other. The two vertical plates 2 drive the two ends of the circuit board to move toward the middle, so that the middle part of the circuit board bends downward. At the same time, the two strip mounting plates 3 will rotate as the circuit board bends, and the middle bending part of the circuit board will push the abutment plate 4 to move downward, thereby setting a scale line 6, and the bending curvature of the circuit board can be directly seen, which is convenient for people to detect the bending performance of the circuit board. Through the above device, it is convenient for people to intuitively view the bending curvature of the circuit board, thereby deriving the bending performance of the circuit board. No precision instruments are required, which reduces the cost of use. Both ends of the circuit board are pressed and clamped to avoid flying out when broken and causing harm to people, which is convenient for people to use.

[0029] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0031] It should be noted that the equipment structure and drawings of the present invention mainly describe the principle of the present invention. In terms of the technology of the design principle, the settings of the device's power mechanism, power supply system and control system are not fully described. On the premise that those skilled in the art understand the principle of the above-mentioned utility model, they can clearly know the details of its power mechanism, power supply system and control system. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art.

[0032] The standard parts used can be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the components known to technical personnel in this field, their structures and principles can be known to these technical personnel through technical manuals or through conventional experimental methods.

[0033] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments.

[0034] For those skilled in the art, it is possible to make various changes, modifications, substitutions and variations to these embodiments without departing from the principles and spirit of the present invention, and they still fall within the scope of protection of the present invention.

Claims

1. A circuit board bending performance testing device, comprising a test bench (1), characterized in that: The upper end of the test bench (1) is slidably provided with two vertical plates (2), and the two vertical plates (2) are symmetrically distributed on the left and right. The test bench (1) is provided with a driving mechanism that can drive the two vertical plates (2) to move relative to each other. The upper ends of the two vertical plates (2) are provided with openings, and a longitudinally arranged strip mounting plate (3) is provided in each opening through a rotating shaft. The two opposite ends of the two strip mounting plates (3) are provided with strip mounting grooves, and a pressing mechanism is provided in each strip mounting groove. A horizontally arranged abutment plate (4) is also provided between the two strip mounting plates (3), and the upper surface of the abutment plate (4) is flush with the lower side walls of the two strip mounting grooves. The rear end of the abutment plate (4) is connected to a back plate (5) through an elastic sliding mechanism. The lower end of the back plate (5) is fixedly connected to the upper end of the test bench (1), and the front side of the back plate (5) is provided with vertically arranged scale lines (6).

2. A circuit board bending performance testing device according to claim 1, characterized in that: The driving mechanism comprises a servo motor (7), a bidirectional threaded rod (8), a gear pair and two sliders (9); a horizontally arranged slide groove is provided on the upper surface of the test bench (1); the slide groove is located between the two vertical plates (2); the two sliders (9) are slidably arranged in the slide groove and are respectively fixedly connected to the bottom of the two vertical plates (2); the bidirectional threaded rod (8) is transversely arranged in the slide groove, and the two ends of the rod wall of the bidirectional threaded rod (8) are respectively threadedly connected to the two sliders (9); the two ends of the bidirectional threaded rod (8) are respectively rotatably connected to the left and right sides of the slide groove through a first bearing; a cavity is provided inside the test bench (1), and the cavity is located on the right side of the slide groove; the right end of the bidirectional threaded rod (8) extends into the cavity; the servo motor (7) is fixedly arranged on the upper side of the test bench (1), and the output shaft of the servo motor (7) extends into the cavity through a second bearing and is mutually transmitted to the bidirectional threaded rod (8) through the gear pair.

3. A circuit board bending performance testing device according to claim 2, characterized in that: The gear pair comprises a first bevel gear (10) and a second bevel gear (11), wherein the first bevel gear (10) is located in a cavity and fixedly connected to the lower end of the output shaft, and the second bevel gear (11) is located in the cavity and fixedly connected to the right end of the bidirectional threaded rod (8), and the first bevel gear (10) and the second bevel gear (11) are meshed with each other.

4. A circuit board bending performance testing device according to claim 2, characterized in that: The side surfaces of the two sliding blocks (9) are both T-shaped, and the end surface of the sliding groove is T-shaped.

5. The circuit board bending performance testing device according to claim 1, characterized in that: The elastic sliding mechanism comprises two round rods (12) and two springs (13). Two round holes symmetrically distributed on the left and right are provided on the rear side of the upper end of the support plate (4). The two round rods (12) are respectively slidably inserted into the two round holes. A fixing block (14) is fixedly provided at the upper and lower ends of each round rod (12). Each fixing block (14) is fixedly connected to the back plate (5). The two springs (13) are fixedly provided on the lower side of the support plate (4) and are movably sleeved on the two round rods (12).

6. A circuit board bending performance testing device according to claim 1, characterized in that: The clamping mechanism includes a strip clamping plate (15) and a hand-tightening bolt (16), wherein the strip clamping plate (15) is vertically slidably arranged in the strip mounting groove, and a threaded hole is provided on the upper side wall of the strip mounting groove. The hand-tightening bolt (16) is threadedly connected to the strip mounting plate (3) through a thread, and the lower end of the hand-tightening bolt (16) is rotatably connected to the strip clamping plate (15) through a third bearing.

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