Mobile phone graphite flake pressure maintaining mechanism

Abstract

The utility model provides a mobile phone graphite flake pressure maintaining mechanism which comprises a pressure maintaining roller assembly and a pressure maintaining partition plate assembly, an X-axis driving assembly is fixed above a first installation support, the front end and the rear end of a movable support are both fixed to the power output end of the X-axis driving assembly, and a balance weight support is arranged above the movable support. The upper end of the guide column is fixed below the balance weight support, the lower end of the guide column penetrates through the movable support, the rolling roller is rotatably installed below the balance weight support, the lifting air cylinder is fixed to the balance weight support, the power output end of the lifting air cylinder faces downwards, and the ejector block is fixed to the power output end of the lifting air cylinder and corresponds to the position above the movable support. The second mounting bracket is fixedly arranged below the rolling roller, the fixed frame is fixed above the second mounting bracket, the fixed frame is provided with a mounting cavity, the mounting cavity vertically penetrates through the fixed frame, and the silica gel plate is fixed in the mounting cavity. The graphite flake pressure maintaining device has the advantages that the pressure of graphite flakes can be uniformly and sufficiently maintained, and insufficient pressure maintaining at local positions is avoided.

Description

Technical Field

[0001] The utility model relates to the field of pressure-maintaining equipment, in particular to a pressure-maintaining mechanism for a graphite sheet of a mobile phone. Background Art

[0002] During the assembly process of a mobile phone, a graphite sheet needs to be installed in the mobile phone. The graphite sheet plays a role in heat dissipation for the mobile phone. In order to make the graphite sheet be assembled more firmly with the mobile phone body, the surface of the graphite sheet needs to be pressure-maintained. There are generally two traditional pressure-maintaining methods. One method is to press the pressure-maintaining block vertically downward on the object and maintain it for a certain period of time. The other method is to use a pressure-maintaining roller to roll back and forth along the surface of the object for a certain number of times. For the pressure-maintaining of the graphite sheet of the mobile phone, if a vertically pressed pressure-maintaining block is used for pressure-maintaining, it is difficult to make the graphite sheet be evenly stressed due to the large area of ​​the graphite sheet, which will lead to poor pressure-maintaining effect at local positions of the graphite sheet. If a roller is used for pressure-maintaining, since the height of the frame around the mobile phone is higher than the graphite sheet, the roller has no sufficient operating space and cannot implement pressure-maintaining. Therefore, in order to improve the pressure-maintaining effect of the graphite sheet, it is necessary to produce a mobile phone graphite sheet pressure-maintaining mechanism to solve the above-mentioned problems. Utility Model Content

[0003] The utility model aims to provide a graphite sheet pressure-maintaining mechanism for a mobile phone to solve the problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A mobile phone graphite sheet pressure-keeping mechanism comprises a pressure-keeping roller assembly and a pressure-keeping partition assembly, wherein the pressure-keeping roller assembly comprises a first mounting bracket, an X-axis drive assembly, a movable bracket, a counterweight bracket, a guide column, a rolling roller, a lifting cylinder and a top block, wherein the first mounting bracket is provided with two groups along the front-back direction, the X-axis drive assembly is fixed above the first mounting bracket, the front and rear ends of the movable bracket are both fixed to the power output end of the X-axis drive assembly, the counterweight bracket is provided above the movable bracket, the upper end of the guide column is fixed below the counterweight bracket, the lower end of the guide column passes through the movable bracket, the rolling roller is rotatably installed below the counterweight bracket, the lifting cylinder is fixed on the counterweight bracket with the power output end facing downward, and the top block is fixed to the power output end of the lifting cylinder and corresponds to the top of the movable bracket;

[0006] The pressure-maintaining partition assembly includes a second mounting bracket, a fixed frame and a silicone plate. The second mounting bracket is fixedly arranged below the rolling roller, the fixed frame is fixed above the second mounting bracket, and an mounting cavity is provided on the fixed frame. The mounting cavity vertically penetrates the fixed frame, and the silicone plate is fixed in the mounting cavity.

[0007] Further description of the utility model: The silicone plate adopts silicone with a hardness of 50 degrees.

[0008] Further description of the utility model: The fixed frame includes a bottom frame, a middle mounting plate, a top frame, bolts, springs and a pressure block. The bottom frame is fixed above the second mounting bracket, the middle mounting plate is arranged above the bottom frame, and the top frame is arranged above the middle mounting plate. The bolts pass through the pressure block and the ends are threadedly connected to the bottom frame. The springs are sleeved on the bolts and the inner side contacts the pressure block. The inner side of the pressure block contacts the middle mounting plate and the top frame. An inclined surface is provided on the inner side of the upper end of the pressure block, and the inclined surface contacts the top frame. An installation cavity is provided in the middle of the middle mounting plate.

[0009] Further description of the utility model: The silicone plate includes a middle pressure plate and end plug plates, the end plug plates are fixed on the left and right sides of the middle pressure plate, the contour of the installation cavity matches the contours of the middle pressure plate and the end plug plates, the middle pressure plate and the end plug plates are fixed in the installation cavity, and the outer ends of the end plug plates correspond to between the bottom frame and the top frame.

[0010] The beneficial effects of the utility model are as follows: after the graphite sheet is installed on the mobile phone, as the carrier plate is transported to the bottom of the pressure-maintaining partition assembly, the carrier plate rises until it contacts the silicone plate, then the lifting cylinder drives the top block to retract upward, and the counterweight block moves downward under the action of gravity, so that the rolling roller contacts the upper surface of the silicone plate, and then the X-axis driving assembly drives the movable bracket to move left and right, so that the rolling roller reciprocates on the silicone plate in the left and right directions, and the contour of the lower end surface of the silicone plate matches the contour of the graphite sheet, so that the silicone plate can maintain pressure on the graphite sheet, and because the rolling roller reciprocates to apply pressure to various parts of the silicone plate, the pressure on the graphite sheet is uniform and sufficient, avoiding insufficient pressure at local positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the overall structure diagram of the utility model;

[0012] Figure 2 This is a structural diagram of the pressure-maintaining roller assembly of the utility model;

[0013] Figure 3 It is a structural diagram of the pressure-maintaining partition assembly in the utility model;

[0014] Description of reference numerals:

[0015] 1. Pressure-maintaining roller assembly; 11. First mounting bracket; 12. X-axis driving assembly; 13. Movable bracket;

[0016] 14. Counterweight bracket; 15. Guide column; 16. Rolling roller; 17. Lifting cylinder; 2. Pressure-maintaining partition assembly; 21. Second mounting bracket; 22. Fixed frame; 221. Bottom frame; 222. Middle mounting plate; 223. Top frame; 224. Bolt; 225. Spring; 226. Pressure block; 23. Silicone plate; 231. Middle pressure plate; 232. End plug plate. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings:

[0018] like Figures 1 to 3 As shown, a pressure-maintaining mechanism for a graphite sheet of a mobile phone comprises a pressure-maintaining roller assembly 1 and a pressure-maintaining partition assembly 2. The pressure-maintaining roller assembly 1 comprises a first mounting bracket 11, an X-axis driving assembly 12, a movable bracket 13, a counterweight bracket 14, a guide column 15, a rolling roller 16, a lifting cylinder 17 and a top block. The first mounting bracket 11 is provided with two groups along the front-to-back direction. The X-axis driving assembly 12 is fixed above the first mounting bracket 11. Both front and rear ends of the movable bracket 13 are fixed to the power output end of the X-axis driving assembly 12. The counterweight bracket 14 is provided above the movable bracket 13. The upper end of the guide column 15 is fixed below the counterweight bracket 14. The lower end of the guide column 15 passes through the movable bracket 13. The rolling roller 16 is rotatably mounted below the counterweight bracket 14. The lifting cylinder 17 is fixed on the counterweight bracket 14 with the power output end facing downward. The top block is fixed to the power output end of the lifting cylinder 17 and corresponds to the upper side of the movable bracket 13.

[0019] The pressure-maintaining partition assembly 2 includes a second mounting bracket 21, a fixed frame 22 and a silicone plate 23. The second mounting bracket 21 is fixedly arranged below the rolling roller 16, and the fixed frame 22 is fixed above the second mounting bracket 21. An installation cavity is provided on the fixed frame 22, and the installation cavity vertically penetrates the fixed frame 22. The silicone plate 23 is fixed in the installation cavity.

[0020] After the graphite sheet is installed on the mobile phone, as the carrier plate is transported to the bottom of the pressure-maintaining partition assembly 2, the carrier plate rises until it contacts the silicone plate 23. Then, the lifting cylinder 17 drives the top block to retract upward, and the counterweight block moves downward under the action of gravity, so that the rolling roller 16 contacts the upper surface of the silicone plate 23. Then, the X-axis drive assembly 12 drives the movable bracket 13 to move left and right, so that the rolling roller 16 reciprocates on the silicone plate 23 in the left and right directions. The contour of the lower end surface of the silicone plate 23 matches the contour of the graphite sheet, so that the silicone plate 23 can maintain pressure on the graphite sheet. Since the rolling roller 16 reciprocates and applies pressure to various parts of the silicone plate 23, the pressure on the graphite sheet is uniform and sufficient, avoiding insufficient pressure at local positions. After the pressure holding is completed, the lifting cylinder 17 drives the top block to move downward, and the top block contacts the movable bracket 13 and lifts the counterweight bracket 14, so that the rolling roller 16 is separated from the silicone plate 23. A counterweight block of a specific weight can be installed on the counterweight bracket 14 according to the needs of the pressure holding pressure. During the lifting and lowering process of the counterweight bracket 14, the guide column 15 slides in the vertical direction on the movable bracket 13 to ensure smooth lifting and lowering of the counterweight bracket 14.

[0021] The silicone plate 23 is made of silicone with a hardness of 50 degrees, which has a moderate hardness and can well transfer the pressure applied by the rolling roller 16 to the graphite sheet, thereby achieving a better pressure-maintaining effect.

[0022] The fixed frame 22 includes a bottom frame 221, a middle mounting plate 222, a top frame 223, bolts 224, springs 225 and a pressure block 226. The bottom frame 221 is fixed above the second mounting bracket 21, the middle mounting plate 222 is arranged above the bottom frame 221, and the top frame 223 is arranged above the middle mounting plate 222. The bolts 224 pass through the pressure block 226 and the end thereof is threadedly connected to the bottom frame 221. The spring 225 is sleeved on the bolts 224 and the inner side thereof touches the pressure block 226. The inner side of the pressure block 226 touches the middle mounting plate 222 and the top frame 223. An inclined surface is provided on the inner side of the upper end of the pressure block 226, and the inclined surface touches the top frame 223. A mounting cavity is provided in the middle of the middle mounting plate 222.

[0023] Pushing the pressing block 226 outward can facilitate placing the middle mounting plate 222 and the top frame 223 on the bottom frame 221. After releasing the pressing block 226, under the action of the spring 225, the inner side of the pressing block 226 presses the middle mounting plate 222 and the top frame 223 toward the center. At the same time, the inclined surface on the pressing block 226 presses the top frame 223 downward, thereby quickly fixing the middle mounting plate 222.

[0024] The silicone plate 23 includes a middle pressing plate 231 and an end plug plate 232. The end plug plates 232 are fixed on the left and right sides of the middle pressing plate 231. The contour of the installation cavity matches the contours of the middle pressing plate 231 and the end plug plates 232. The middle pressing plate 231 and the end plug plates 232 are fixed in the installation cavity. The outer ends of the end plug plates 232 correspond to between the bottom frame 221 and the top frame 223. The silicone plate 23 is directly placed in the installation cavity, and the ends of the end plug plates 232 are pressed by the bottom frame 221 and the top frame 223, so that the silicone plate 23 is quickly fixed on the middle installation plate 222.

[0025] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A graphite sheet pressure-maintaining mechanism for a mobile phone, characterized in that: It includes a pressure-maintaining roller assembly and a pressure-maintaining partition assembly, the pressure-maintaining roller assembly includes a first mounting bracket, an X-axis drive assembly, a movable bracket, a counterweight bracket, a guide column, a rolling roller, a lifting cylinder and a top block, the first mounting bracket is arranged in two groups along the front-to-back direction, the X-axis drive assembly is fixed above the first mounting bracket, the front and rear ends of the movable bracket are both fixed to the power output end of the X-axis drive assembly, the counterweight bracket is arranged above the movable bracket, the upper end of the guide column is fixed below the counterweight bracket, the lower end of the guide column passes through the movable bracket, the rolling roller is rotatably mounted below the counterweight bracket, the lifting cylinder is fixed on the counterweight bracket with the power output end facing downward, and the top block is fixed to the power output end of the lifting cylinder and corresponds to the top of the movable bracket; The pressure-maintaining partition assembly includes a second mounting bracket, a fixed frame and a silicone plate. The second mounting bracket is fixedly arranged below the rolling roller, and the fixed frame is fixed above the second mounting bracket. A mounting cavity is provided on the fixed frame, and the mounting cavity vertically penetrates the fixed frame. The silicone plate is fixed in the mounting cavity.

2. A graphite sheet pressure-maintaining mechanism for a mobile phone according to claim 1, characterized in that: The silica gel plate is made of silica gel with a hardness of 50 degrees.

3. A graphite sheet pressure-maintaining mechanism for a mobile phone according to claim 1, characterized in that: The fixed frame includes a bottom frame, a middle mounting plate, a top frame, bolts, springs and a pressure block. The bottom frame is fixed above the second mounting bracket, the middle mounting plate is arranged above the bottom frame, and the top frame is arranged above the middle mounting plate. The bolt passes through the pressure block and the end thereof is threadedly connected to the bottom frame. The spring is sleeved on the bolt and the inner side thereof contacts the pressure block. The inner side of the pressure block contacts the middle mounting plate and the top frame. An inclined surface is arranged on the inner side of the upper end of the pressure block, and the inclined surface contacts the top frame. The mounting cavity is arranged in the middle of the middle mounting plate.

4. A graphite sheet pressure-maintaining mechanism for a mobile phone according to claim 3, characterized in that: The silicone plate includes a middle pressure plate and end plug plates, the end plug plates are fixed on the left and right sides of the middle pressure plate, the contour of the installation cavity matches the contours of the middle pressure plate and the end plug plates, the middle pressure plate and the end plug plates are fixed in the installation cavity, and the outer ends of the end plug plates correspond to between the bottom frame and the top frame.

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