Graphite sheet mounting and shaping apparatus

Abstract

The application discloses a graphite sheet mounting and shaping device, which comprises a machine table, a carrier plate mounted on the machine table and a shaping assembly arranged above the carrier plate, the upper surface of the carrier plate is used for placing a semi-finished product to be shaped, and the shaping assembly further comprises a support frame, a movable seat arranged in parallel below the support frame and a shaping head mounted on the lower surface of the movable seat, one pin shaft is mounted on each of the four side surfaces of the movable seat in a circumferential direction, and the other end of the pin shaft connected with the movable seat is slidably embedded into a corresponding shaft sleeve mounted on an adjacent connecting block. The graphite sheet mounting and shaping device can automatically flatten the semi-finished product by the shaping head, improve the production efficiency and the stability of the product quality, actively correct the attachment tolerance of the gasket and the placement deviation of the semi-finished product, does not damage the sheet, can automatically reverse, and improves the processing efficiency and the processing quality of the product.

Description

Technical Field

[0001] This invention relates to the field of automated processing technology, and in particular to a graphite sheet mounting and shaping device. Background Technology

[0002] Graphite sheets are a new type of thermally conductive and heat-dissipating material used in laptops, high-power LED lighting, flat panel displays, digital cameras, mobile terminals, etc. In existing technologies, graphite sheets are generally attached to devices with adhesive to achieve heat dissipation.

[0003] 3C products are emerging in recent years along with the development of the electronics industry. They mainly refer to computer, communication, and consumer electronics products. In this industry, technological development is changing rapidly, with frequent upgrades and replacements. A large number of new products are launched almost every month, which has made it a hot area for product design.

[0004] In the current manufacturing process, due to the structural design and other requirements of 3C products, the surface to which the graphite sheet is bonded may not be flat. Even after the bonding operation of the graphite sheet is completed, it is still necessary to manually level the undulating stepped areas, which leads to the following problems: 1. The manual leveling efficiency is low and the quality of the finished product is unstable; 2. During the processing, problems such as the bonding tolerance of the gasket or the placement deviation of the semi-finished product are easy to occur, which will damage the sheet and reduce the processing efficiency and quality. Summary of the Invention

[0005] The main objective of this invention is to provide a graphite sheet mounting and shaping device that can automatically level semi-finished products with the shaping head, improve production efficiency and the stability of finished product quality, actively correct the adhesion tolerance of the gaskets and the placement deviation of the semi-finished products without damaging the sheets, and also realize automatic reversal to improve the processing efficiency and quality of the products.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a graphite sheet mounting and shaping device, comprising: a machine base, a carrier plate mounted on the machine base, and a shaping component disposed above the carrier plate. The upper surface of the carrier plate is used to place the semi-finished product to be shaped. The shaping component and the carrier plate can move relative to each other in the directions of the horizontal X-axis, the horizontal Y-axis, and the vertical Z-axis. The semi-finished product comprises: a substrate, a plurality of spacers disposed on the upper surface of the substrate, and a thin sheet covering the upper surfaces of the substrate and the spacers.

[0007] The shaping assembly further includes: a support frame, a movable seat arranged parallel to the bottom of the support frame, and a shaping head mounted on the lower surface of the movable seat. The lower end of the shaping head is used to roll into contact with the upper surface of the thin sheet area located above the edge of the pad. A connecting block is provided on the outer side of each of the four sides of the movable seat. Each connecting block is slidably mounted on the lower surface of the support frame via a set of slide rails and a slider. A stop block is provided on the outer side of each end of each slide rail. Each stop block is connected to a connecting block that can reciprocate along the slide rail direction via a spring. A pin is mounted on each of the four circumferential side surfaces of the movable seat. The other end of the pin, which is connected to the movable seat at one end, is slidably embedded in a bushing corresponding to an adjacent connecting block.

[0008] The following are further improvements to the above technical solution:

[0009] 1. In the above scheme, any one of the shaping components or carrier plates is movably mounted on a three-axis drive assembly.

[0010] 2. In the above solution, a Y-axis drive assembly is installed on the upper surface of the machine platform, and an X-axis drive assembly is installed above the Y-axis drive assembly via a bracket on the upper surface of the machine platform. The carrier plate is installed on the movable part of the Y-axis drive assembly, and a Z-axis drive assembly is installed on the movable part of the X-axis drive assembly. The shaping assembly is installed on the movable part of the Z-axis drive assembly.

[0011] 3. In the above scheme, the support frame is an L-shaped support frame, the movable seat is located below the horizontal part of the support frame, the support frame is slidably mounted on a vertical base plate and can move in the vertical direction, a limiting block is provided on the vertical base plate and located above the vertical part of the support frame, and the limiting block is connected to the vertical part of the support frame by a vertical spring.

[0012] 4. In the above scheme, the vertical base plate is mounted on the movable part of the Z-axis drive assembly.

[0013] 5. In the above scheme, the horizontal and vertical parts of the support frame are connected by a number of L-shaped connecting blocks.

[0014] 6. In the above scheme, the vertical part of the support frame is mounted on the vertical base plate by two sets of mutually cooperating slide rails and sliders.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0016] 1. The graphite sheet mounting and shaping equipment of the present invention has a shaping component that can move relative to a carrier plate in the directions of horizontal X-axis, horizontal Y-axis and vertical Z-axis. The shaping component includes: a support frame, a movable seat arranged parallel to the lower part of the support frame and a shaping head mounted on the lower surface of the movable seat. The lower end of the shaping head is used to roll contact with the upper surface of the thin sheet area located above the edge of the pad. A connecting block is provided on the outer side of the movable seat. Each connecting block is slidably mounted on the lower surface of the support frame through a set of slide rails and sliders. A stop block is provided on the outer side of each end of each slide rail. Each stop block is connected to a connecting block that can reciprocate along the slide rail direction. The components are connected by a spring. Each of the four side surfaces of the movable seat is equipped with a pin. The other end of the pin, which is connected to the movable seat, can be slidably embedded in the bushing installed on the adjacent connecting block. This allows for three-axis movement of the shaping head relative to the product to automatically level the semi-finished product, improving production efficiency and the stability of finished product quality. Furthermore, the floating setting of the movable seat with the shaping head in the X and Y axes can actively correct the attachment tolerance of the shims and the placement deviation of the semi-finished product, ensuring that the shaping head always moves close to the edge of the shims without damaging the thin sheet. It can also achieve automatic reversal, improving the processing efficiency and quality of the product.

[0017] 2. The graphite sheet mounting and shaping equipment of the present invention further comprises an L-shaped support frame, a movable seat located below the horizontal part of the support frame, the support frame being slidably mounted on a vertical base plate and movable in the vertical direction, and a limiting block being provided on the vertical base plate above the vertical part of the support frame. The limiting block is connected to the vertical part of the support frame by a vertical spring, thereby adjusting the vertical force of the shaping head. This ensures that the shaping head is in close contact with the sheet in the vertical direction and avoids damage to the sheet due to excessive vertical force, thereby further improving the processing yield. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the graphite sheet mounting and shaping equipment of the present invention;

[0019] Figure 2 This is a partial disassembly diagram of the graphite sheet mounting and shaping equipment of the present invention. Figure 1 ;

[0020] Figure 3 This is a partial structural schematic diagram of the graphite sheet mounting and shaping equipment of the present invention;

[0021] Figure 4 This is a partial disassembly diagram of the graphite sheet mounting and shaping equipment of the present invention. Figure 2 ;

[0022] Figure 5 For the appendix Figure 4 A schematic cross-sectional view along the middle AA section;

[0023] Figure 6 For the appendix Figure 4 Enlarged diagram of point B in the middle.

[0024] In the above attached figures: 100, semi-finished product; 101, substrate; 102, gasket; 103, thin sheet; 200, Y-axis drive assembly; 300, bracket; 400, X-axis drive assembly; 500, Z-axis drive assembly; 1, machine base; 2, carrier plate; 21, air hole; 22, vacuum chamber; 221, first sub-cavity; 222, second sub-cavity; 23, limiting post; 3, shaping assembly; 31, support frame; 311, horizontal part; 312, vertical part; 32, movable seat; 33, shaping head; 34, connecting block; 35, spring; 36, sensor; 371, slide rail; 372, slider; 38, stop block; 391, pin; 392, bushing; 4, vertical base plate; 5, limiting block; 6, vertical spring; 7, L-shaped connecting block. Implementation

[0025] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0026] Example 1: A graphite sheet mounting and shaping device includes: a machine base 1, a carrier plate 2 mounted on the machine base 1, and a shaping component 3 disposed above the carrier plate 2. The upper surface of the carrier plate 2 is used to place a semi-finished product 100 to be shaped. The shaping component 3 and the carrier plate 2 can move relative to each other in the directions of the horizontal X-axis, the horizontal Y-axis, and the vertical Z-axis. The semi-finished product 100 includes: a substrate 101, a plurality of pads 102 disposed on the upper surface of the substrate 101, and a thin sheet 103 covering the upper surfaces of the substrate 101 and the pads 102.

[0027] Because there is a thickness difference between the gasket and the substrate, after the thin sheet is attached, the edge contour line of the gasket, that is, the difference between the gasket and the substrate, needs to be squeezed and flattened.

[0028] The shaping component 3 further includes: a support frame 31, a movable seat 32 arranged parallel to the lower part of the support frame 31, and a shaping head 33 mounted on the lower surface of the movable seat 32. The lower end of the shaping head 33 is used to roll contact with the upper surface of the thin sheet 103 area located above the edge of the pad 102. A connecting block 34 is provided on the outer side of the movable seat 32. Each connecting block 34 is slidably mounted on the lower surface of the support frame 31 via a set of slide rails 371 and a slider 372. A stop block 38 is provided on the outer side of each end of each slide rail 371. Each stop block 38 is connected to the connecting block 34 that can reciprocate along the slide rail 371 via a spring 35. A pin 391 is mounted on each of the four circumferential side surfaces of the movable seat 32. The other end of the pin 391, which is connected to the movable seat 32 at one end, is slidably embedded in a bushing 392 corresponding to the adjacent connecting block 34.

[0029] Either the shaping component 3 or the carrier plate 2 mentioned above can be movably mounted on a three-axis drive assembly.

[0030] A Y-axis drive assembly 200 is mounted on the upper surface of the machine tool 1. An X-axis drive assembly 400 is mounted on the upper surface of the machine tool 1 via a bracket 300 above the Y-axis drive assembly 200. The carrier plate 2 is mounted on the movable part of the Y-axis drive assembly 200. A Z-axis drive assembly 500 is mounted on the movable part of the X-axis drive assembly 400. The shaping assembly 3 is mounted on the movable part of the Z-axis drive assembly 500.

[0031] The shaping head is moved above the outer side of the line to be shaped by the three-axis drive mechanism. The Z-axis drive mechanism drives the shaping head to move down until it contacts the sheet and generates slight compression (i.e., the vertical spring is subjected to compression force). The X-axis and / or Y-axis drive mechanisms drive the shaping head to move towards the line to be shaped until it is close to the side surface of the pad through the sheet and generates slight lateral compression.

[0032] The aforementioned support frame 31 is an L-shaped support frame. The movable seat 32 is located below the horizontal part 311 of the support frame 31. The support frame 31 is slidably mounted on a vertical base plate 4 and can move in the vertical direction. A limiting block 5 is provided on the vertical base plate 4 and above the vertical part 312 of the support frame 31. The limiting block 5 is connected to the vertical part 312 of the support frame 31 by a vertical spring 6.

[0033] The aforementioned vertical base plate 4 is mounted on the movable part of the Z-axis drive assembly 500.

[0034] The horizontal part 311 and the vertical part 312 of the aforementioned support frame 31 are connected by a number of L-shaped connecting blocks 7.

[0035] The vertical part 312 of the support frame 31 is mounted on the vertical base plate 4 by two sets of mutually cooperating slide rails and sliders.

[0036] Example 2: A graphite sheet mounting and shaping device, comprising: a machine base 1, a carrier plate 2 mounted on the machine base 1, and a shaping component 3 disposed above the carrier plate 2. The upper surface of the carrier plate 2 is used to place a semi-finished product 100 to be shaped. The shaping component 3 and the carrier plate 2 can move relative to each other in the directions of the horizontal X-axis, the horizontal Y-axis, and the vertical Z-axis. The semi-finished product 100 comprises: a substrate 101, a plurality of pads 102 disposed on the upper surface of the substrate 101, and a thin sheet 103 covering the upper surfaces of the substrate 101 and the pads 102.

[0037] The shaping component 3 further includes: a support frame 31, a movable seat 32 arranged parallel to the lower part of the support frame 31, and a shaping head 33 mounted on the lower surface of the movable seat 32. The lower end of the shaping head 33 is used to roll contact with the upper surface of the thin sheet 103 area located above the edge of the pad 102. A connecting block 34 is provided on the outer side of the movable seat 32. Each connecting block 34 is slidably mounted on the lower surface of the support frame 31 via a set of slide rails 371 and a slider 372. A stop block 38 is provided on the outer side of each end of each slide rail 371. Each stop block 38 is connected to the connecting block 34 that can reciprocate along the slide rail 371 via a spring 35. A pin 391 is mounted on each of the four circumferential side surfaces of the movable seat 32. The other end of the pin 391, which is connected to the movable seat 32 at one end, is slidably embedded in a bushing 392 corresponding to the adjacent connecting block 34.

[0038] Either the shaping component 3 or the carrier plate 2 mentioned above can be movably mounted on a three-axis drive assembly.

[0039] A Y-axis drive assembly 200 is mounted on the upper surface of the machine tool 1. An X-axis drive assembly 400 is mounted on the upper surface of the machine tool 1 via a bracket 300 above the Y-axis drive assembly 200. The carrier plate 2 is mounted on the movable part of the Y-axis drive assembly 200. A Z-axis drive assembly 500 is mounted on the movable part of the X-axis drive assembly 400. The shaping assembly 3 is mounted on the movable part of the Z-axis drive assembly 500.

[0040] The shaping head is driven by a three-axis mechanism to move along the shaping line to perform automatic leveling. During this process, the shaping head, under the action of horizontal and vertical springs, always maintains appropriate lateral pressure on the side surface of the pad and appropriate pressure on the pad in the vertical direction through the thin sheet.

[0041] The aforementioned support frame 31 is an L-shaped support frame. The movable seat 32 is located below the horizontal part 311 of the support frame 31. The support frame 31 is slidably mounted on a vertical base plate 4 and can move in the vertical direction. A limiting block 5 is provided on the vertical base plate 4 and above the vertical part 312 of the support frame 31. The limiting block 5 is connected to the vertical part 312 of the support frame 31 by a vertical spring 6.

[0042] Adjusting the vertical force applied to the shaping head ensures that the head is in close contact with the sheet in the vertical direction, while also preventing damage to the sheet due to excessive vertical force, thereby further improving the processing yield.

[0043] The aforementioned vertical base plate 4 is mounted on the movable part of the Z-axis drive assembly 500.

[0044] The horizontal part 311 and the vertical part 312 of the aforementioned support frame 31 are connected by a number of L-shaped connecting blocks 7.

[0045] The vertical part 312 of the support frame 31 is mounted on the vertical base plate 4 by two sets of mutually cooperating slide rails and sliders.

[0046] The upper surface of the carrier plate 2 is provided with a number of evenly distributed air holes 21. The lower end of each air hole 21 is connected to a vacuum chamber 22 disposed in the carrier plate 2. The vacuum chamber 22 is connected to a vacuum pump or a vacuum generator through a pipe.

[0047] The aforementioned vacuum cavity 22 includes several first sub-cavities 221 extending along the Y direction and several second sub-cavities 222 extending along the X direction. The several first sub-cavities 221, which are spaced apart along the X direction, are connected to each other through the second sub-cavities 222.

[0048] At least two limiting posts 23 are provided at the mutually perpendicular edges of the upper surface of the above-mentioned carrier plate 2, and the two mutually perpendicular side ends of the semi-finished product 100 are respectively attached to the corresponding limiting posts 23.

[0049] The semi-finished product is placed on the upper surface of the carrier plate, and its two side surfaces are aligned with the two limiting posts to ensure the positional accuracy of the semi-finished product. Then, the semi-finished product in the precise position is adsorbed and positioned by vacuum adsorption to prevent it from shifting due to external forces during subsequent processing. This can ensure the positional accuracy of the semi-finished product throughout the entire processing process, thereby improving the precision and quality of product processing.

[0050] The aforementioned sheet 103 is a graphite sheet with a thickness of 0.5 mm.

[0051] The substrate 101 is a copper foil sheet, and the gasket 102 is a stainless steel sheet.

[0052] Four stop blocks 38 are provided and are respectively installed at the four corners of the lower surface of the horizontal support plate 31. Each of the two adjacent side surfaces of each stop block 38 is connected to a spring 35.

[0053] Each of the four pins 391 is connected to the area near the four corners of the movable seat 32.

[0054] A sensor 36 is provided between each of the aforementioned connecting blocks 34 and the movable seat 32 to sense changes in the distance between the movable seat 32 and the connecting block 34.

[0055] When the movable seat 32 is located in the center of the area enclosed by the four connecting blocks 34, each of the springs 35 is in a naturally relaxed or slightly compressed state.

[0056] The compression amount of each of the springs 35 in the slightly compressed state is the same.

[0057] The working principle of this invention is as follows: First, the semi-finished product is placed on the upper surface of the carrier plate, and its two side surfaces are attached to the two limiting posts to ensure the positional accuracy of the semi-finished product. Then, the semi-finished product in the precise position is adsorbed and positioned by vacuum adsorption, so that it will not shift due to external force during subsequent processing.

[0058] Because there is a thickness difference between the gasket and the substrate, after the thin sheet is attached, the edge contour line of the gasket, that is, the difference between the gasket and the substrate, needs to be squeezed and flattened.

[0059] The shaping head is moved above the outer side of one end of the line to be shaped by the three-axis drive mechanism. The Z-axis drive mechanism drives the shaping head to move down until it contacts the sheet and generates slight compression (i.e., the vertical spring is subjected to compression force). The X-axis and / or Y-axis drive mechanisms drive the shaping head to move towards the line to be shaped until it is close to the side surface of the pad through the sheet and generates slight lateral compression.

[0060] Next, the shaping head is driven by a three-axis mechanism to move along the shaping line to perform automatic leveling. During this process, the shaping head, under the action of the horizontal and vertical springs, always maintains appropriate lateral pressure on the side surface of the pad and appropriate pressure on the pad in the vertical direction through the thin sheet.

[0061] The graphite sheet mounting and shaping equipment of this invention has a pin installed on each of the four side surfaces of the movable seat. The other end of the pin, which is connected to the movable seat, can be slidably embedded in the bushing installed on the adjacent connecting block. This can realize the three-axis movement of the shaping head relative to the product to automatically level the semi-finished product, improve production efficiency and the stability of finished product quality. It can also actively correct the attachment tolerance of the shim and the placement deviation of the semi-finished product by floating the movable seat with the shaping head in the X and Y axis directions, always ensuring that the shaping head moves close to the edge of the shim without damaging the sheet. It can also realize automatic reversal, improving the processing efficiency and processing quality of the product.

[0062] Furthermore, the support frame is configured as an L-shaped support frame, with the movable seat located below the horizontal part of the support frame. The support frame is slidably mounted on a vertical base plate and can move in the vertical direction, thereby adjusting the vertical force of the shaping head. This ensures that the shaping head is in close contact with the sheet in the vertical direction and avoids damage to the sheet due to excessive vertical force, thus further improving the processing yield.

[0063] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A graphite sheet mounting and shaping device, comprising: The machine (1), the carrier plate (2) mounted on the machine (1) and the shaping component (3) disposed above the carrier plate (2), wherein the upper surface of the carrier plate (2) is used to place the semi-finished product (100) to be shaped, and the shaping component (3) and the carrier plate (2) can move relative to each other in the directions of the horizontal X-axis, the horizontal Y-axis and the vertical Z-axis, wherein the semi-finished product (100) includes: a substrate (101), a plurality of pads (102) disposed on the upper surface of the substrate (101) and a thin sheet (103) covering the upper surfaces of the substrate (101) and the pads (102). The shaping component (3) further includes: a support frame (31), a movable seat (32) arranged parallel to the lower part of the support frame (31), and a shaping head (33) mounted on the lower surface of the movable seat (32). The lower end of the shaping head (33) is used to roll into contact with the upper surface of the thin sheet (103) area located above the edge of the pad (102). A connecting block (34) is provided on the outer side of the movable seat (32). Each connecting block (34) is slidably connected to the slider (372) by a set of slide rails (371). Installed on the lower surface of the support frame (31), each of the slide rails (371) has a stop block (38) on the outer side of each end. Each stop block (38) is connected to a connecting block (34) that can reciprocate along the slide rail (371) by a spring (35). Each of the four side surfaces of the movable seat (32) is equipped with a pin (391). The other end of the pin (391) connected to the movable seat (32) is slidably embedded in the bushing (392) corresponding to the adjacent connecting block (34).

2. The graphite sheet mounting and shaping equipment according to claim 1, characterized in that: Either the shaping component (3) or the carrier plate (2) can be movably mounted on a three-axis drive assembly.

3. The graphite sheet mounting and shaping equipment according to claim 1, characterized in that: A Y-axis drive assembly (200) is mounted on the upper surface of the machine tool (1). An X-axis drive assembly (400) is mounted on the upper surface of the machine tool (1) via a bracket (300) above the Y-axis drive assembly (200). The carrier plate (2) is mounted on the movable part of the Y-axis drive assembly (200). A Z-axis drive assembly (500) is mounted on the movable part of the X-axis drive assembly (400). The shaping assembly (3) is mounted on the movable part of the Z-axis drive assembly (500).

4. The graphite sheet mounting and shaping equipment according to claim 3, characterized in that: The support frame (31) is an L-shaped support frame. The movable seat (32) is located below the horizontal part (311) of the support frame (31). The support frame (31) is slidably mounted on a vertical base plate (4) and can move in the vertical direction. A limiting block (5) is provided on the vertical base plate (4) above the vertical part (312) of the support frame (31). The limiting block (5) is connected to the vertical part (312) of the support frame (31) by a vertical spring (6).

5. The graphite sheet mounting and shaping equipment according to claim 4, characterized in that: The vertical base plate (4) is mounted on the movable part of the Z-axis drive assembly (500).

6. The graphite sheet mounting and shaping equipment according to claim 4, characterized in that: The horizontal part (311) and the vertical part (312) of the support frame (31) are connected by a number of L-shaped connecting blocks (7).

7. The graphite sheet mounting and shaping equipment according to claim 4, characterized in that: The vertical part (312) of the support frame (31) is mounted on the vertical base plate (4) by two sets of mutually cooperating slide rails and sliders.

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