A scratch resistance tester for printed circuit boards

Abstract

The utility model provides a scratch resistance tester for printed circuit boards, belonging to the technical field of testers. The scratch resistance tester for printed circuit boards includes a detection structure and a fixed structure, the fixed structure includes a driving member and a clamping member, the driving member is fixed on the top of the detection structure, the clamping member includes a sleeve rod, the sleeve rod is rotatably connected to the inside of the driving member, a gear is fixed to the end of the sleeve rod, a top pin is slidably connected to the inside of the sleeve rod, a spring is fixed to the end of the top pin, one end of the spring is fixed to the inside of the sleeve rod, a connecting shaft is rotatably connected to the inside of the sleeve rod, a screw rod three is fixed to the end of the connecting shaft, a slot is provided at the end of the screw rod three, and a clamping plate is threadedly connected to one side of the screw rod three. The utility model can quickly clamp and fix the circuit board through the design of the clamping member, and the circuit board will not be damaged due to excessive force.

Description

Technical Field

[0001] The utility model relates to the technical field of testers, in particular to a scratch resistance tester for a printed circuit board. Background Art

[0002] In life, the surface of a product is often the most vulnerable part, especially in daily use, it may be scratched, bumped, etc. The scratch resistance tester tests the surface scratch resistance of the product by simulating these usage scenarios. Generally speaking, the scratch resistance tester uses a steel needle of a certain hardness to apply a certain load and a certain angle on the surface of the product coating, and then slowly scratches it horizontally at a certain speed. The hardness and scratch resistance of the coating surface are evaluated by observing the length and depth of the scratch. Scratch back and forth until obvious scratches are produced or the scratch depth meets the standard requirements.

[0003] Chinese patent number CN208420589U provides a scratch resistance tester, including a control box, a scratch needle connecting plate is provided between adjacent guide rods, a scratch needle assembly is provided on the scratch needle connecting plate, a guide rail fixing plate is provided between adjacent guide rod fixing columns, a rack is fixed to the bottom of the movable plate, the rack is meshed with a driving gear, the driving gear is meshed with a driven gear, the driven gear is connected to a motor shaft, the motor shaft is connected to a moving motor, a protective cover lifting nut is provided on one side of the control box, and a lifting bearing seat is provided on the outside. The utility model adopts PLC for test operation and adopts a dual-drive motor. It can be combined with the structure of a rotatable work table, and can scratch the sample in both the vertical and horizontal directions at the same time, ensuring the scraping speed and interval size of the sample, and realizing scratching at a speed of 20mm / s±5mm / s in both the vertical and horizontal directions, so as to easily carry out the test of scratching the sample in both the vertical and horizontal directions.

[0004] At present, the existing scratch resistance tester for printed circuit boards can perform horizontal and vertical scratch tests by rotating the circuit board. However, the existing tester often uses manual clamping when clamping and fixing the circuit board, which results in a slow clamping speed. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a scratch resistance tester for printed circuit boards, aiming to improve the problem that the scratch resistance tester for printed circuit boards usually clamps the circuit boards too slowly.

[0006] The utility model is achieved in this way:

[0007] The utility model provides a scratch resistance tester for a printed circuit board, comprising a detection structure and a fixed structure, wherein the fixed structure comprises a driving member and a clamping member, wherein the driving member is fixed on the top of the detection structure, and the clamping member comprises a sleeve rod, wherein the sleeve rod is rotatably connected to the inside of the driving member, a gear is fixed to the end of the sleeve rod, a top pin is slidably connected to the inside of the sleeve rod, a spring is fixed to the end of the top pin, one end of the spring is fixed to the inside of the sleeve rod, a connecting shaft is rotatably connected to the inside of the sleeve rod, a screw rod three is fixed to the end of the connecting shaft, a clamping groove is provided at the end of the screw rod three, and a clamping plate is threadedly connected to one side of the screw rod three.

[0008] In one embodiment of the utility model, the detection structure includes a base frame, a support leg is fixed to the bottom of the base frame, a bottom sleeve is fixed to the top of the base frame, an electric telescopic rod is fixed inside the bottom sleeve, a slide is fixed to the end of the electric telescopic rod, and the slide is slidably connected to the inside of the bottom sleeve.

[0009] In one embodiment of the utility model, a transverse moving member is fixed on the top of the slide, and the transverse moving member includes a first motor. The first motor is fixed on the top of the slide, and a bevel gear 1 is fixed on the output shaft end of the first motor, and a bevel gear 2 is meshed with one side of the bevel gear 1.

[0010] In an embodiment of the utility model, a screw rod 1 is fixed to one side of the bevel gear 2, a support frame is threadedly connected to one side of the screw rod 1, and the support frame is slidably connected to the inside of the slide.

[0011] In one embodiment of the utility model, a longitudinal moving member is fixed to one side of the support frame, and the longitudinal moving member includes a second motor. The second motor is fixed to one side of the support frame, a second screw rod is fixed to the output shaft end of the second motor, a slider is threadedly connected to one side of the screw rod, and a marking needle is fixed inside the slider.

[0012] In an embodiment of the utility model, the driving member includes a placement shell, the placement shell is fixed on the top of the base frame, a slide groove is opened on the top of the placement shell, and a connecting shell is fixed inside the placement shell.

[0013] In an embodiment of the utility model, a third motor is fixed to the bottom of the connecting shell, a crown tooth is fixed to the output shaft end of the third motor, and the crown tooth is meshed with a gear.

[0014] The beneficial effect of the utility model is that the utility model obtains a scratch resistance tester for printed circuit boards through the above design. When in use, the third motor drives the crown gear to rotate so that the four gears can rotate at the same time, thereby the gear drives the sleeve rod to rotate, and the ejector pin in the sleeve rod is inserted into the card slot so that the screw rod three can rotate at the same time, thereby the clamping plate is moved, so the circuit board can be clamped and fixed by the four clamping plates. By driving the third motor, the circuit board can be quickly fixed without excessive clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of a scratch resistance tester for a printed circuit board provided by an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of a transverse moving member of a scratch resistance tester for a printed circuit board provided in an embodiment of the utility model;

[0018] Figure 3 A schematic diagram of a longitudinal moving part of a scratch resistance tester for a printed circuit board provided in an embodiment of the utility model;

[0019] Figure 4 A schematic diagram of a driving component of a scratch resistance tester for a printed circuit board provided in an embodiment of the utility model;

[0020] Figure 5 A schematic diagram of a clamping member of a scratch resistance tester for a printed circuit board provided in an embodiment of the utility model.

[0021] In the figure: 100-detection structure; 110-base frame; 111-support leg; 112-bottom sleeve; 113-electric telescopic rod; 114-slide; 120-transverse member; 121-first motor; 122-bevel gear one; 123-bevel gear two; 124-screw rod one; 125-support frame; 130-longitudinal member; 131-second motor; 132-screw rod two; 133-slider; 134-scratching needle; 200-fixed structure; 210-driving member; 211-placing shell; 212-slideway; 213-connecting shell; 214-third motor; 215-crown gear; 220-clamping member; 221-sleeve rod; 222-gear; 223-thrust pin; 224-spring; 225-connecting shaft; 226-screw rod three; 227-slot; 228-splitting plate. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example

[0024] See also Figure 1-5 The utility model provides a technical solution: a scratch resistance tester for a printed circuit board, comprising a detection structure 100 and a fixed structure 200, the fixed structure 200 comprising a driving member 210 and a clamping member 220, the driving member 210 being fixed on the top of the detection structure 100, the clamping member 220 comprising a sleeve rod 221, the sleeve rod 221 being rotatably connected in a connecting shell 213, the sleeve rod 221 being rotatably connected inside the driving member 210, a gear 222 being fixed at the end of the sleeve rod 221, a top pin 223 being slidably connected inside the sleeve rod 221, the end of the top pin 223 being a semi-circular ball, and the end of the top pin 223 being a semi-circular ball. A spring 224 is fixed, and the spring 224 can make the ejector pin 223 protrude out of the sleeve rod 221 under normal conditions through elastic force. One end of the spring 224 is fixed inside the sleeve rod 221, and the sleeve rod 221 is rotatably connected with a connecting shaft 225 inside. The connecting shaft 225 plays a transitional connection role. A screw rod 226 is fixed at the end of the connecting shaft 225, and a slot 227 is provided at the end of the screw rod 226. The slot 227 can allow the ejector pin 223 to be inserted, thereby driving the screw rod 226 to rotate. A clamping plate 228 is threadedly connected to one side of the screw rod 226, and multiple clamping plates 228 can be used to clamp the circuit board.

[0025] See also Figure 1-3The detection structure 100 includes a base frame 110, a support leg 111 is fixed to the bottom of the base frame 110, a bottom sleeve 112 is fixed to the top of the base frame 110, an electric telescopic rod 113 is fixed inside the bottom sleeve 112, the electric telescopic rod 113 can control the downward movement of the stylus 134, a slide 114 is fixed to the end of the electric telescopic rod 113, the slide 114 is slidably connected to the inside of the bottom sleeve 112, a transverse member 120 is fixed to the top of the slide 114, and the transverse member 120 includes a first motor 121, the first motor 121 is fixed to the top of the slide 114, a bevel gear 122 is fixed to the output shaft end of the first motor 121, a bevel gear 122 is meshed with a bevel gear 2 123 on one side of the bevel gear 122, and a bevel gear 2 123 is fixed on one side. There is a screw rod 124, which can drive the support frame 125 to move by rotating, so that the marking needle 134 can move synchronously. One side of the screw rod 124 is threadedly connected to the support frame 125, and the support frame 125 is slidably connected to the inside of the slide 114. A longitudinal moving member 130 is fixed to one side of the support frame 125. The longitudinal moving member 130 includes a second motor 131, and the second motor 131 is fixed to one side of the support frame 125. A screw rod 2 132 is fixed to the output shaft end of the second motor 131. The screw rod 2 132 can drive the slider 133 to move, thereby driving the marking needle 134 to move synchronously. One side of the screw rod 132 is threadedly connected to the slider 133, and the marking needle 134 is fixed inside the slider 133.

[0026] See also Figure 1 and Figure 4-5 The driving member 210 includes a placement shell 211, which is fixed on the top of the base frame 110. A slide groove 212 is provided on the top of the placement shell 211. The slide groove 212 facilitates the sliding of the splint 228 in the placement shell 211. A connecting shell 213 is fixed inside the placement shell 211. A third motor 214 is fixed at the bottom of the connecting shell 213. A crown tooth 215 is fixed at the output shaft end of the third motor 214. The crown tooth 215 can drive multiple gears 222 to rotate at the same time, and the crown tooth 215 is meshed with the gear 222.

[0027] Specifically, the working principle of the scratch resistance tester for printed circuit boards is as follows: when in use, the circuit board is placed on the top of the placement shell 211, and then the third motor 214 is started, and the crown gear 215 is driven to rotate by the third motor 214, so that the four gears 222 rotate synchronously. When the gear 222 rotates, the sleeve rod 221 also rotates synchronously. Because the spring 224 inserts the ejector pin 223 into the card slot 227 through the elastic force, the ejector pin 223 is used as a medium. When the sleeve rod 221 rotates, the ejector pin 223 can also drive the screw rod 3 226 to rotate synchronously, so that the clamping plate 228 can move. In this way, when one or more of the clamps 228 cannot move, the rest can still operate normally, so that the circuit board can be clamped, and then the electric telescopic rod 113 is retracted to press the marking needle 134 onto the circuit board, and then the first motor 121 drives the bevel gear 122 to rotate, so that the bevel gear 123 can drive the screw rod 124 to rotate, so that the support frame 125 can move, so that the marking needle 134 can draw a mark on the circuit board. Similarly, the second motor 131 drives the screw rod 132 to rotate, so that the slider 133 can drive the marking needle 134 to move, so that a longitudinal mark can be drawn on the circuit board.

[0028] It should be noted that the specific models and specifications of the first motor 121, the second motor 131 and the third motor 214 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0029] The power supply and principles of the first motor 121 , the second motor 131 and the third motor 214 are clear to those skilled in the art and are not described in detail herein.

[0030] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A scratch resistance tester for printed circuit boards, characterized in that: The invention comprises a detection structure (100) and a fixed structure (200), wherein the fixed structure (200) comprises a driving member (210) and a clamping member (220), wherein the driving member (210) is fixed on the top of the detection structure (100), and the clamping member (220) comprises a sleeve rod (221), wherein the sleeve rod (221) is rotatably connected to the inside of the driving member (210), and a gear (222) is fixed at the end of the sleeve rod (221), and the sleeve rod (221) is provided with a gear (222) inside the sleeve rod (221). A push pin (223) is slidably connected to the top of the push pin (223), a spring (224) is fixed to the end of the push pin (223), one end of the spring (224) is fixed inside the sleeve rod (221), a connecting shaft (225) is rotatably connected inside the sleeve rod (221), a screw rod three (226) is fixed to the end of the connecting shaft (225), a clamping groove (227) is provided at the end of the screw rod three (226), and a clamping plate (228) is threadedly connected to one side of the screw rod three (226).

2. A scratch resistance tester for printed circuit boards according to claim 1, characterized in that: The detection structure (100) comprises a base frame (110), a supporting leg (111) being fixed at the bottom of the base frame (110), a bottom sleeve (112) being fixed at the top of the base frame (110), an electric telescopic rod (113) being fixed inside the bottom sleeve (112), a slide frame (114) being fixed at the end of the electric telescopic rod (113), and the slide frame (114) being slidably connected inside the bottom sleeve (112).

3. A scratch resistance tester for printed circuit boards according to claim 2, characterized in that: A transverse moving member (120) is fixed on the top of the slide (114), and the transverse moving member (120) comprises a first motor (121). The first motor (121) is fixed on the top of the slide (114), and a bevel gear 1 (122) is fixed on the output shaft end of the first motor (121), and a bevel gear 2 (123) is meshed on one side of the bevel gear 1 (122).

4. A scratch resistance tester for printed circuit boards according to claim 3, characterized in that: A screw rod (124) is fixed to one side of the bevel gear (123), a support frame (125) is threadedly connected to one side of the screw rod (124), and the support frame (125) is slidably connected to the inside of the slide frame (114).

5. A scratch resistance tester for printed circuit boards according to claim 4, characterized in that: A longitudinal moving member (130) is fixed to one side of the support frame (125), and the longitudinal moving member (130) includes a second motor (131). The second motor (131) is fixed to one side of the support frame (125), and a second screw rod (132) is fixed to the output shaft end of the second motor (131). A slider (133) is threadedly connected to one side of the second screw rod (132), and a marking needle (134) is fixed inside the slider (133).

6. A scratch resistance tester for printed circuit boards according to claim 2, characterized in that: The driving member (210) comprises a placement shell (211), the placement shell (211) is fixed on the top of the base frame (110), a sliding groove (212) is provided on the top of the placement shell (211), and a connecting shell (213) is fixed inside the placement shell (211).

7. A scratch resistance tester for printed circuit boards according to claim 6, characterized in that: A third motor (214) is fixed to the bottom of the connection shell (213), a crown tooth (215) is fixed to the output shaft end of the third motor (214), and the crown tooth (215) is meshed with a gear (222).

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