Graphite bending fatigue testing device

Abstract

The utility model relates to the field of graphite sheet testing equipment, in particular to a graphite bending fatigue testing device which comprises a bearing vertical plate and a bending mechanism used for bending a flexible graphite sheet, the bearing vertical plate is rotatably connected with more than one bearing guide wheel, a traction rope is hung on the more than one bearing guide wheel, and the traction rope is connected with the bending mechanism. One end of the traction rope is connected with the counterweight piece, the other end of the traction rope is connected with one end of the flexible graphite sheet, and the other end of the flexible graphite sheet is connected to the bending mechanism. According to the graphite bending fatigue testing device disclosed by the utility model, a bending fatigue test can be carried out on a graphite monomer, all materials do not need to be assembled into a folding mobile phone to be tested, and only one graphite flake is scrapped in each test, so that the test cost is effectively reduced, the test efficiency is improved, and the test requirements of customers can be conveniently and quickly responded.

Description

Technical Field

[0001] The utility model relates to the field of graphite sheet testing equipment, and more specifically, to a graphite bending fatigue testing device. Background Art

[0002] Graphite sheet is a brand-new heat-conducting and heat-dissipating material with unique grain orientation, uniformly conducting heat in two directions. The sheet-like structure can well adapt to any surface, shielding heat sources while improving the heat dissipation performance of consumer electronic products.

[0003] In recent years, with the emergence of folding mobile phones, flexible graphite has been widely used in folding mobile phones. Folding mobile phones have high requirements for the number of folds. The existing folding test devices often can only test the whole folding mobile phone. During the test, all materials need to be assembled into the folding mobile phone and then the bending test is carried out. The cost of each test is very high and the efficiency is low. Therefore, how to test the graphite monomer in the folding mobile phone is an urgent technical problem to be solved. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a graphite bending fatigue testing device.

[0005] The technical solution adopted by the graphite bending fatigue testing device of the utility model is as follows:

[0006] A graphite bending fatigue testing device includes: a bearing vertical plate and a bending mechanism for bending a flexible graphite sheet. One or more bearing guide wheels are rotatably connected to the bearing vertical plate. A traction rope is hung on one or more bearing guide wheels. One end of the traction rope is connected to a counterweight, and the other end of the traction rope is connected to one end of the flexible graphite sheet. The other end of the flexible graphite sheet is connected to the bending mechanism.

[0007] Further, two bearing guide wheels are provided. The two bearing guide wheels are rotatably connected to the bearing vertical plate side by side, and the traction rope is hung above the two bearing guide wheels.

[0008] Further, the bearing guide wheel includes a guide wheel body, the guide wheel body is rotatably connected to a bearing shaft, and the bearing shaft is rotatably connected to the bearing vertical plate; a circular wheel groove for hanging the traction rope is provided in the middle of the outer wheel surface of the guide wheel body.

[0009] Further, the guide wheel body is a ceramic wheel made of ceramic material.

[0010] Further, the counterweight is a load weight.

[0011] Further, the traction rope is a nylon rope.

[0012] As can be seen from the above solution, the beneficial effects of the present utility model are as follows:

[0013] A graphite bending fatigue testing device of the present utility model can conduct bending fatigue tests on graphite monomers. There is no need to assemble all materials into a folding mobile phone for testing. Only one graphite sheet is scrapped for each test, effectively reducing the testing cost, improving the testing efficiency, and facilitating quick response to customers' testing requirements.

[0014] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, provides a detailed description as follows. Description of the Drawings

[0015] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the drawings:

[0016] Figure 1 is the overall schematic diagram provided by the embodiment of the present utility model;

[0017] Figure 2 is the schematic diagram of the bending mechanism provided by the embodiment of the present utility model Figure 1 ;

[0018] Figure 3 is the schematic diagram of the bending mechanism provided by the embodiment of the present utility model Figure 2 ;

[0019] Figure 4 is the partial schematic diagram of the bending mechanism provided by the embodiment of the present utility model;

[0020] Figure 5 is the structural schematic diagram of the bending top plate provided by the embodiment of the present utility model;

[0021] Figure 6 is the cross-sectional view of the bending top plate provided by the embodiment of the present utility model.

[0022] Reference numerals: bearing vertical plate 1; bending mechanism 2; bearing shaft bracket 201; bending rotating shaft 202; perforation 203; locking clamping plate 204; locking screw 205; bearing guide wheel 3; traction rope 4; counterweight 5; flexible graphite sheet 6; bending top plate 7; fixed plate body 701; moving plate body 702; tension spring body 703; position adjusting screw 704; pressing roller 705; bending drive 8; motor 801; semi-gear 802; rotating gear 803. Detailed Embodiments

[0023] In order to clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention, it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] It should be understood that the terms such as "having", "comprising" and "including" used herein do not exclude the existence or addition of one or more other elements or their combinations.

[0025] Please refer to Figures 1-6 , a graphite bending fatigue test device provided by the present invention includes: a bearing vertical plate 1 and a bending mechanism 2 for bending a flexible graphite sheet 6. One or more bearing guide wheels 3 are rotatably connected to the bearing vertical plate 1. A traction rope 4 is hung on one or more bearing guide wheels 3. One end of the traction rope 4 is connected to a counterweight 5, and the other end of the traction rope 4 is connected to one end of the flexible graphite sheet 6. The other end of the flexible graphite sheet 6 is connected to the bending mechanism 2.

[0026] The working principle and technical effect of the present invention are as follows:

[0027] In the graphite bending fatigue test device of the present invention, during the test, one end of the flexible graphite sheet 6 is connected to the traction rope 4. In order to improve the connection stability, a clamp can be provided between the traction rope 4 and the flexible graphite sheet 6. The clamp can adopt a film clamp purchased on the market and has no excessive structural design, so it will not be elaborated here. The other end of the flexible graphite sheet 6 is connected to the bending mechanism 2. Then the bending mechanism 2 is started. After the bending mechanism 2 is started, it presses and bends the flexible graphite sheet 6. When the flexible graphite sheet 6 is bent, the counterweight 5 can be driven to rise through the traction rope 4. The traction rope 4 rolls on one or more bearing guide wheels 3, and the friction is small. When the bending mechanism 2 releases the pressing on the flexible graphite sheet 6, the counterweight 5 moves downward under its own gravity, thereby driving the flexible graphite sheet 6 to return to the vertical state, which is convenient for the bending mechanism 2 to perform the bending movement again. The present invention can perform bending fatigue tests on graphite monomers without assembling all materials into a folding mobile phone for testing. Only one graphite sheet is scrapped for each test, effectively reducing the test cost and improving the test efficiency. A counter can be configured in the bending mechanism 2 to facilitate counting the number of bends.

[0028] There are two bearing guide wheels 3. The two bearing guide wheels 3 are rotatably connected to the bearing vertical plate 1 side by side. The traction rope 4 is hung above the two bearing guide wheels 3, with good stability and ensuring the smooth movement of the traction rope 4.

[0029] The load-bearing guide wheel 3 includes a guide wheel body rotatably connected to a load-bearing shaft, and the load-bearing shaft is rotatably connected to the load-bearing vertical plate 1; a circular groove for hanging the traction rope 4 is provided in the middle of the outer wheel surface of the guide wheel body, reducing the probability of the separation of the traction rope 4 from the guide wheel body and ensuring the stability of traction.

[0030] The guide wheel body is a ceramic wheel made of ceramic material, effectively reducing the frictional resistance, and the surface of the ceramic wheel is smooth, reducing the wear on the traction rope 4.

[0031] The counterweight 5 is a load weight, which is convenient to select weights of different weights according to actual situations.

[0032] The traction rope 4 is a nylon rope, with a relatively low cost.

[0033] The bending mechanism 2 includes a bearing shaft bracket 201 fixed to the load-bearing vertical plate 1 and a bending rotating shaft 202 rotatably provided on the bearing shaft bracket 201. A perforation 203 for the flexible graphite sheet 6 to penetrate is provided on the bending rotating shaft 202. A locking clamping plate 204 for pressing against the flexible graphite sheet 6 is slidably connected in the perforation 203. The locking clamping plate 204 is rotatably connected to the inner end of a locking screw 205. The middle of the locking screw 205 is threadedly connected to the bending rotating shaft 202, and the other end of the locking screw 205 is fixedly connected with a screwing wheel; a bending top plate 7 for pressing and bending the flexible graphite sheet 6 is fixedly connected to the bending rotating shaft 202; one end of the bending rotating shaft 202 is connected to a bending drive 8 installed on the load-bearing vertical plate 1. The bending drive 8 includes: a motor 801 seated on the load-bearing vertical plate 1 through a motor base 801, a half gear 802 fixed to the output shaft of the motor 801, and the half gear 802 is intermittently meshed with a rotating gear 803, and the rotating gear 803 is fixedly connected to the bending rotating shaft 202. A rubber anti-slip pad is glued to the side of the locking clamping plate 204 in contact with the flexible graphite sheet 6.

[0034] When bending, one end of the flexible graphite sheet 6 away from the traction rope 4 is inserted into the through hole 203. By rotating the locking screw 205, the contact position between the locking screw 205 and the bending rotating shaft 202 is changed, so as to control the locking clamping plate 204 to slide in the through hole 203 and press against the flexible graphite sheet 6, so that the flexible graphite sheet 6 is fixed in the through hole 203. And an anti-slip pad can be adhered to the inner side surface of the through hole 203 to improve the connection stability with the flexible graphite sheet 6. The lower end of the flexible graphite sheet 6 can also pass out below the through hole 203 and be adhered to the bending rotating shaft 202 through tape to further improve the connection effect. Then, the motor 801 is started. When the semi-gear 802 driven by the motor 801 rotates to contact the rotating gear 803, the rotating gear 803 is controlled to rotate a certain amplitude. The rotating gear 803 drives the bending top plate 7 to rotate a certain amplitude through the bending rotating shaft 202. The bending top plate 7 presses against the side of the flexible graphite sheet 6, so that the flexible graphite sheet 6 is subjected to a bending test. When the semi-gear 802 rotates to separate from the rotating gear 803, the flexible graphite sheet 6 resets under the gravity traction of the counterweight 5, which is convenient for bending again.

[0035] The bending top plate 7 includes a fixed plate body 701 fixed on the bending rotating shaft 202. A moving plate body 702 is slidably connected in the telescopic slideway at one end of the fixed plate body 701 away from the bending rotating shaft 202. A tension spring body 703 is fixed between the moving plate body 702 and the inner side surface of the telescopic slideway. An adjusting screw 704 is rotatably connected to the fixed plate body 701. The adjusting screw 704 is threadedly connected in the internal thread channel of the moving plate body 702. One end of the moving plate body 702 away from the fixed plate body 701 is rotatably connected to a pressing roller 705.

[0036] The pressing roller 705 is used to contact the side surface of the flexible graphite sheet 6. By providing the rotatable pressing roller 705, the wear of the flexible graphite sheet 6 during bending can be reduced, and the flexible graphite sheet 6 can be prevented from breaking due to wear, which affects the test accuracy. The contact position between the pressing roller 705 and the side surface of the flexible graphite sheet 6 can be adjusted, which is convenient for bending tests at different positions. During adjustment, by rotating the adjusting screw 704, its contact position with the moving plate body 702 can be changed, so as to control the moving plate body 702 to slide in the telescopic slideway at one end of the fixed plate body 701 away from the bending rotating shaft 202, and adjust the relative position between the moving plate body 702 and the fixed plate body 701, so as to adjust the contact position between the pressing roller 705 and the side surface of the flexible graphite sheet 6. A tension spring body 703 is fixed between the moving plate body 702 and the inner side surface of the telescopic slideway, which is beneficial to improving the stability of the relative position between the moving plate body 702 and the fixed plate body 701 after adjustment, making it not easy to loosen and ensuring the accuracy of the test results.

[0037] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation to the present utility model.

[0038] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] Although the embodiments of the present utility model have been disclosed above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present utility model. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to the specific details and the illustrated examples here.

Claims

1. A graphite bending fatigue testing device, characterized in that: include: A load-bearing vertical plate (1) and a bending mechanism (2) for bending a flexible graphite sheet (6); the load-bearing vertical plate (1) is rotatably connected to one or more load-bearing guide wheels (3); a traction rope (4) is hung on one or more load-bearing guide wheels (3); one end of the traction rope (4) is connected to a counterweight (5); the other end of the traction rope (4) is connected to one end of the flexible graphite sheet (6); and the other end of the flexible graphite sheet (6) is connected to the bending mechanism (2).

2. A graphite bending fatigue testing device according to claim 1, characterized in that: The two load-bearing guide wheels (3) are provided, and the two load-bearing guide wheels (3) are rotatably connected side by side on the load-bearing vertical plate (1), and the traction rope (4) is hung above the two load-bearing guide wheels (3).

3. A graphite bending fatigue testing device according to claim 1 or 2, characterized in that: The load-bearing guide wheel (3) comprises a guide wheel body, which is rotatably connected to a load-bearing shaft, and the load-bearing shaft is rotatably connected to a load-bearing vertical plate (1); an annular wheel groove for hanging a traction rope (4) is provided in the middle of the outer wheel surface of the guide wheel body.

4. A graphite bending fatigue testing device according to claim 3, characterized in that: The guide wheel body is a ceramic wheel made of ceramic material.

5. The graphite bending fatigue testing device according to claim 1, characterized in that: The counterweight (5) is a load-bearing weight.

6. The graphite bending fatigue testing device according to claim 1, characterized in that: The traction rope (4) is a nylon rope.

7. The graphite bending fatigue testing device according to claim 1, characterized in that: The bending mechanism (2) comprises a bearing bracket (201) fixedly connected to the bearing bracket (201) and a bending shaft (202) rotatably arranged on the bearing bracket (201); a through hole (203) for the flexible graphite sheet (6) to penetrate is arranged on the bending shaft (202); a locking clamp (204) for pressing against the flexible graphite sheet (6) is slidably connected in the through hole (203); the locking clamp (204) is rotatably connected to the inner end of a locking screw (205); the middle part of the locking screw (205) is threadedly connected to the bending shaft (202); the other end of the locking screw (205) is fixedly connected to a screw wheel; a bending top plate (7) for pressing against and bending the flexible graphite sheet (6) is fixedly connected to the bending shaft (202); one end of the bending shaft (202) is connected to a bending drive (8) installed on the bearing bracket (1).

8. The graphite bending fatigue testing device according to claim 7, characterized in that: A rubber anti-skid pad is glued to the side of the locking clamping plate (204) that contacts the flexible graphite sheet (6).

9. The graphite bending fatigue testing device according to claim 7, characterized in that: The bending drive (8) comprises: a motor (801) mounted on the supporting vertical plate (1) via a motor (801) seat, the output shaft of the motor (801) fixing a half gear (802), the half gear (802) intermittently meshingly connected to a rotating gear (803), and the rotating gear (803) fixedly connected to the bending shaft (202).

10. The graphite bending fatigue testing device according to claim 7, characterized in that: The bending top plate (7) comprises a fixed plate body (701) fixedly connected to the bending rotating shaft (202); a movable plate body (702) is slidably connected in a telescopic slideway at one end of the fixed plate body (701) away from the bending rotating shaft (202); a tensioning spring body (703) is fixedly connected between the movable plate body (702) and the inner side surface of the telescopic slideway; a positioning screw (704) is rotatably connected to the fixed plate body (701); the positioning screw (704) is threadedly connected in an internal thread channel of the movable plate body (702); and one end of the movable plate body (702) away from the fixed plate body (701) is rotatably connected to a top pressure roller (705).

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