Material-saving cutting method for heat-conducting fins

Abstract

The invention discloses a material-saving cutting method for a heat-conducting fin, which comprises the following steps of: placing the whole heat-conducting fin on a first feeding belt of a first asynchronous jump cutting machine, cutting the whole heat-conducting fin into strip-shaped heat-conducting fins by using the first asynchronous jump cutting machine, taking down the part with the strip-shaped heat-conducting fins on a first discharging belt through cutting, and then cutting the part with the strip-shaped heat-conducting fins on the first discharging belt by using the first asynchronous jump cutting machine; a first protective film and a second protective film which cover the strip-shaped heat-conducting fins are attached to the cut first discharging belt to form a laminated piece, and the laminated piece is arranged on a second feeding belt of a second asynchronous jump cutting machine in an overturning mode; a second asynchronous jump cutting machine is used for cutting the laminated part into rectangular heat-conducting fins arranged in an array mode and first strip-shaped protective films and second strip-shaped protective films arranged at intervals, and the part, provided with the rectangular heat-conducting fins, the first strip-shaped protective films and the second strip-shaped protective films, of a second discharging belt is taken down through cutting; production of the heat-conducting fin units arranged at intervals is achieved in an asynchronous cutting mode, and the utilization rate of heat-conducting fin materials is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal conductive sheet cutting, and in particular to a material-saving cutting method for thermal conductive sheets. Background Art

[0002] The existing process method for producing a whole plate of thermally conductive silicone sheet products into silicone sheet units arranged at equal intervals is usually to use an automatic cutting machine to cut the whole sheet of thermally conductive sheet material according to a preset interval size to form equidistant parallel slits, and then manually remove the strips of residual material between the slits to form equidistant intervals between the required silicone sheet units. However, the above method of forming intervals by removing the strips of residual material between the slits will result in material waste and low utilization rate of the thermally conductive silicone sheet material. Summary of the Invention

[0003] The purpose of the present invention is to provide a material-saving cutting method for thermal conductive sheets, which realizes the production of thermal conductive sheet units arranged at intervals through asynchronous cutting, avoids material waste caused by cutting and removing excess material, and effectively improves the utilization rate of thermal conductive sheet materials.

[0004] In order to achieve the above-mentioned object, the present invention discloses a material-saving cutting method for a thermal conductive sheet, the cutting method comprising: Placing the entire thermal conductive sheet on the first feeding belt of the first asynchronous jump cutting machine; Using a first asynchronous jump cutting machine to cut the entire heat conducting sheet into strip-shaped heat conducting sheets spaced apart along a first direction; Cutting and removing the portion of the first discharging belt of the first asynchronous jump cutting machine with the strip-shaped heat conducting sheet; sequentially attaching a first protective film and a second protective film covering the strip-shaped heat conductive sheet to the cut first outfeed tape to form a laminate; Turning over the cut first outfeed belt with the stacked parts and extending it along the first direction to arrange it on the second infeed belt of the second asynchronous jump cutting machine, and removing the cut first outfeed belt; Using a second asynchronous jump cutting machine to cut the strip-shaped heat conducting sheet, the first protective film and the second protective film in the laminate to obtain rectangular heat conducting sheets arranged in an array and the strip-shaped first protective film and the strip-shaped second protective film arranged at intervals; Cut and remove the portion of the second discharge belt of the second asynchronous jump cutting machine with the rectangular heat conductive sheet, the strip-shaped first protective film and the strip-shaped second protective film.

[0005] Furthermore, after “cutting and removing the portion of the second discharge belt of the second asynchronous jump cutting machine having the rectangular heat conductive sheet, the first strip protective film, and the second strip protective film”, the method further includes: A release film covering the rectangular heat conductive sheet, the first strip protective film, and the second strip protective film is attached to the cut second outfeed tape and flipped over; Remove the cut second discharge tape and the strip-shaped second protective film on the release film.

[0006] Furthermore, the thickness of the first protective film ranges from 0.019 mm to 0.025 mm, and a hand-tear position is provided on the side of the first protective film covering the strip-shaped thermal conductive sheet.

[0007] Furthermore, the thickness of the second protective film ranges from 0.035 mm to 0.040 mm.

[0008] Furthermore, the first feed belt and the first discharge belt of the first asynchronous jump cutting machine are non-silicone release films, and the width of the first feed belt and the first discharge belt is greater than the width of the entire thermal conductive sheet by 90 mm to 110 mm.

[0009] Furthermore, the second feed belt and the second discharge belt of the second asynchronous jump cutting machine are low-viscosity silicone protective films, and the width of the second feed belt and the second discharge belt is greater than the width of the stack by 90 mm to 110 mm.

[0010] The present invention uses an asynchronous jump cutting machine to cut the thermal conductive sheet. First, a whole piece of thermal conductive sheet is placed on the first feeding belt of the first asynchronous jump cutting machine, so that the first asynchronous jump cutting machine is used to cut the whole piece of thermal conductive sheet into strip thermal conductive sheets, and the part with the strip thermal conductive sheet on the first discharge belt is removed by cutting. Next, the first protective film and the second protective film covering the strip thermal conductive sheet are attached to the cut first discharge belt to form a stack, and the stack is flipped and arranged on the second feeding belt of the second asynchronous jump cutting machine through the cut first discharge belt, so that the second asynchronous jump cutting machine is used to cut the stack into rectangular thermal conductive sheets arranged in an array and strip-shaped first protective films and strip-shaped second protective films arranged at intervals, and the part with the rectangular thermal conductive sheets, strip-shaped first protective films and strip-shaped second protective films on the second discharge belt is removed by cutting. The above-mentioned production of the thermal conductive sheet units arranged at intervals is realized by asynchronous cutting, which can avoid material waste caused by cutting and removing excess material, and effectively improve the utilization rate of the thermal conductive sheet material. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 Flowchart of a material-saving cutting method for a thermal conductive sheet according to an embodiment of the present invention.

[0012] Figure 2 It is a structural schematic diagram of the asynchronous jump cutting machine in the material-saving cutting method of the thermal conductive sheet according to an embodiment of the present invention.

[0013] Figure 3 This is a top view of the first asynchronous jump cutting machine in the material-saving cutting method for thermal conductive sheets according to an embodiment of the present invention.

[0014] Figure 4 1. A top view of a stacked component in a material-saving cutting method for a thermally conductive sheet according to an embodiment of the present invention.

[0015] Figure 5 This is a top view of the second asynchronous jump cutting machine in the material-saving cutting method for thermal conductive sheets according to an embodiment of the present invention.

[0016] Figure 6 It is a top view of a rectangular heat conducting sheet, a strip-shaped first protective film, and a strip-shaped second protective film in a heat conducting sheet material-saving cutting method according to an embodiment of the present invention.

[0017] Figure 7 This is a top view of a strip-shaped first protective film, a rectangular thermally conductive sheet, and a release film in a material-saving cutting method for a thermally conductive sheet according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to explain the technical content, structural features, achieved objectives and effects of the present invention in detail, the following is a detailed description in conjunction with the embodiments and the accompanying drawings.

[0019] See also Figures 1 to 7 The present invention discloses a material-saving cutting method for a thermal conductive sheet, the cutting method comprising: It should be noted that the first asynchronous jump cutting machine 100 and the second asynchronous jump cutting machine 200 used in the cutting method are prior art. The first asynchronous jump cutting machine 100 and the second asynchronous jump cutting machine 200 both include a feeding device 1, a discharging device 2 and a cutting device 3. The feeding device 1 includes a feeding platform 11, a first unloading shaft 12, and a first receiving shaft 13. The discharging device 2 includes a discharging platform 21, a second unloading shaft 22, and a second receiving shaft 23. The feeding platform 11 and the discharging platform 21 are both provided with a pressure wheel feeding assembly 4. The first feeding belt 101 and the second feeding belt 201 are opposite to each other. It should be wound around the feeding platform 11 of the first asynchronous jump cutter 100 and the second asynchronous jump cutter 200, and its two ends are correspondingly connected to the first unloading shaft 12 and the first receiving shaft 13 of the first asynchronous jump cutter 100 and the second asynchronous jump cutter 200, the first discharging belt 102 and the second discharging belt 202 are correspondingly wound around the discharging platform 21 of the first asynchronous jump cutter 100 and the second asynchronous jump cutter 200, and its two ends are correspondingly connected to the second unloading shaft 22 and the second receiving shaft 23 of the first asynchronous jump cutter 100 and the second asynchronous jump cutter 200, but this is not a limitation.

[0020] S101, placing the entire heat conducting sheet 301 on the first feeding belt 101 of the first asynchronous jump cutting machine 100; It should be noted that the first direction is Figure 2As shown in the horizontal direction, the side edges of the whole thermal conductive sheet 301 are the edges of the whole thermal conductive sheet 301 along the longitudinal sides. The feeding platform 11 of the first asynchronous jump cutting machine 100 is provided with scale lines extending along the first direction. Specifically, in this embodiment, the size of the whole thermal conductive sheet 301 is 400mm*400mm. First, tear off the bottom film of the whole thermal conductive sheet 301, and align the side edges of the whole thermal conductive sheet 301 with the scale lines to accurately place the whole thermal conductive sheet 301 on the first feeding belt 101, and then tear off the release film on the front of the whole thermal conductive sheet 301, so as to facilitate the subsequent use of the first asynchronous jump cutting machine 100 to accurately cut the whole thermal conductive sheet 301.

[0021] S102, using the first asynchronous jump cutting machine 100 to cut the entire heat conducting sheet 301 into strip-shaped heat conducting sheets 302 arranged at intervals along a first direction; It can be understood that the first feeding belt 101 drives the entire thermal conductive sheet 301 to advance along the first direction toward the first discharging belt 102 under the coordinated traction of the first unloading shaft 12, the first receiving shaft 13 and the pressure wheel feeding assembly 4, until the front side of the entire thermal conductive sheet 301 reaches the preset position of the first discharging belt 102 (set according to the actual required size of the rectangular thermal conductive sheet 306) and then pauses, and the cutting device 3 drives the cutter to accurately cut the portion of the entire thermal conductive sheet 301 on the first discharging belt 102, and then, while keeping the first feeding belt 101 stationary, the first discharging belt 102 drives the strip thermal conductive sheet 302 obtained by cutting to continue to advance along the first direction for a set distance (set according to the actual required spacing between two adjacent rectangular thermal conductive sheets 306) under the coordinated traction of the second unloading shaft 22, the second receiving shaft 23 and the pressure wheel feeding assembly 4, so that the strip thermal conductive sheet 302 The heat conducting sheet 302 is spaced apart from the front side of the entire heat conducting sheet 301, and then the coordinated traction of the first feeding belt 101 is restored until the front side of the entire heat conducting sheet 301 reaches the preset position of the first discharging belt 102 again, and the above process is repeated cyclically to realize cutting the entire heat conducting sheet 301 into a plurality of strip heat conducting sheets 302 and forming the intervals between the plurality of strip heat conducting sheets 302. When producing heat conducting silicone sheet products that need to be spaced apart, the cutting of the cutting device 3 and the coordination of the intermittent movement of the feeding device 1 and the discharging device 2 can realize the automatic forming of the cutting and spacing of the heat conducting sheet material, which can effectively save the heat conducting silicone sheet material and avoid the use of ordinary cutting and waste cleaning methods to achieve the spacing between the heat conducting silicone material units. At the same time, the size of the heat conducting silicone sheet cut by the first asynchronous jump cutting machine 100 can be flexibly adjusted according to the size of the required product.

[0022] S103, cutting and removing the portion of the first discharge belt 102 of the first asynchronous jump cutting machine 100 with the strip-shaped heat conducting sheet 302; It should be noted that a cutting knife is provided on the discharge platform 21 of the first asynchronous jump cutting machine 100, so as to facilitate cutting a certain section of the first discharge belt 102 after the cutting of the strip thermal conductive sheet 302 is completed, so as to completely remove the cut strip thermal conductive sheet 302 and proceed to the next operation.

[0023] Furthermore, the first feed belt 101 and the first discharge belt 102 of the first asynchronous jump cutter 100 are non-silicone release films, and the width of the first feed belt 101 and the first discharge belt 102 is greater than the width of the entire thermal conductive sheet 301 by 90 mm to 110 mm.

[0024] Specifically, in this embodiment, the width of the first feed belt 101 and the first discharge belt 102 is greater than the width of the entire thermal conductive sheet 301 by 100 mm, that is, the two side edges of the first feed belt 101 and the first discharge belt 102 extend 50 mm along the longitudinal sides of the entire thermal conductive sheet 301, but this is not a limitation.

[0025] S104 , sequentially attaching the first protective film 303 and the second protective film 304 covering the strip-shaped heat conducting sheet 302 to the cut first discharge belt 102 to form a laminate 305 ; It should be noted that, in this embodiment, the first protective film 303 is formed by partially overlapping a plurality of protective film strips along the longitudinal direction, and the second protective film 304 is a whole sheet of supporting film. The first protective film 303 is attached to the strip-shaped thermal conductive sheet 302, and the second protective film 304 is attached to the first protective film 303, but this is not a limitation.

[0026] Furthermore, the thickness of the first protective film 303 ranges from 0.019 mm to 0.025 mm, and a hand-tear position 3031 is provided on the side of the first protective film 303 covering the strip-shaped heat conducting sheet 302 .

[0027] Specifically, in this embodiment, the thickness of the first protective film 303 is in the range of 0.019 mm or 0.025 mm, but is not limited thereto. The tearing positions 3031 provided on the side of the first protective film 303 are formed into the pulling positions 3071 on the side of each strip of the first protective film 307 after being cut by the first asynchronous jump cutting machine 100.

[0028] Furthermore, the thickness of the second protection film 304 ranges from 0.035 mm to 0.040 mm.

[0029] Specifically, in this embodiment, the thickness of the second protective film 304 is 0.038 mm, but this is not a limitation, and is beneficial for protecting the first protective film 303 .

[0030] S105, turning over the cut first discharge belt 102 with the stacked parts 305 and extending it along the first direction to be arranged on the second feed belt 201 of the second asynchronous skip cutting machine 200, and removing the cut first discharge belt 102; It should be noted that the feeding platform 11 of the second asynchronous jump cutting machine 200 is provided with scale lines extending along the first direction, with the edges of the strip-shaped heat-conducting plates 302 arranged at intervals along the longitudinal direction serving as the side edges of the stack 305. Specifically, in this embodiment, the side edges of the stack 305 are aligned with the scale lines to accurately place the stack 305 on the second feeding belt 201, so that the second asynchronous jump cutting machine 200 can accurately cut the stack 305 and tear off the cut first discharge belt 102 above the stack 305.

[0031] S106, using the second asynchronous jump cutting machine 200 to cut the strip-shaped heat conducting sheet 302, the first protective film 303, and the second protective film 304 in the laminate 305 to obtain rectangular heat conducting sheets 306 arranged in an array and strip-shaped first protective films 307 and strip-shaped second protective films 308 arranged at intervals; The second feeding belt 201 drives the stack 305 to advance along the first direction toward the second discharging belt 202 under the coordinated traction of the first feeding shaft 12, the first receiving shaft 13 and the pressure wheel feeding assembly 4 of the second asynchronous jump cutting machine 200, until the front side of the stack 305 reaches the preset position of the second discharging belt 202 (set according to the actual required size of the rectangular heat conductive sheet 306) and then pauses, and the cutting device 3 drives the cutter to accurately cut the portion of the stack 305 on the second discharging belt 202, and then, while keeping the second feeding belt 201 stationary, the second discharging belt 202 drives the first protective film 307 and the second protective film 308 obtained by cutting and the plurality of rectangular heat conductive sheets 306 arranged on the first protective film 303 along the longitudinal direction to continue to advance along the first direction. The stack 305 is cut into rectangular thermally conductive sheets 306 arranged in an array and strips of the first protective film 307 and the second protective film 308 arranged at intervals.

[0032] S107 , cutting and removing the portion of the second discharge belt 202 of the second asynchronous jump cutting machine 200 with the rectangular heat conducting sheet 306 , the strip-shaped first protective film 307 and the strip-shaped second protective film 308 .

[0033] It should be noted that a cutting knife is provided on the discharge platform 21 of the second asynchronous jump cutting machine 200, so that after the rectangular thermal conductive sheet 306, the strip-shaped first protective film 307 and the strip-shaped second protective film 308 are cut, a certain section of the second discharge belt 202 can be cut to completely remove the cut rectangular thermal conductive sheet 306, the strip-shaped first protective film 307 and the strip-shaped second protective film 308.

[0034] Furthermore, the second feeding belt 201 and the second discharging belt 202 of the second asynchronous jump cutting machine 200 are low-viscosity silicone protective films, and the width of the second feeding belt 201 and the second discharging belt 202 is greater than the width of the stack 305 by 90 mm to 110 mm.

[0035] Specifically, in this embodiment, the width of the second feed belt 201 and the second discharge belt 202 is 100 mm greater than the width of the entire thermal conductive sheet 301, that is, the two side edges of the first feed belt 101 and the first discharge belt 102 extend 50 mm along the longitudinal sides of the stack 305, but this is not a limitation.

[0036] Furthermore, after “cutting and removing the portion of the second discharge belt 202 of the second asynchronous jump cutting machine 200 with the rectangular heat conductive sheet 306, the strip-shaped first protective film 307 and the strip-shaped second protective film 308”, the method further includes: S108 , attaching the release film 309 covering the rectangular heat conducting sheet 306 , the strip-shaped first protective film 307 , and the strip-shaped second protective film 308 to the cut second discharge belt 202 and turning it over; S109 , removing the cut second discharge tape 202 and the strip-shaped second protective film 308 on the release film 309 .

[0037] It can be understood that in this embodiment, the release film 309 is used as the base of the final rectangular thermal conductive sheet 306 product, and the rectangular thermal conductive sheets 306 are arranged in an array on the release film 309. The rectangular thermal conductive sheets 306 arranged at intervals along the longitudinal direction are covered and protected by the same strip of the first protective film 307. Therefore, the second discharge belt 202 and the strip of the second protective film 308 are removed through steps S108 to S109, but this is not a limitation.

[0038] The present invention uses an asynchronous jump cutter to cut the thermal conductive sheet. First, a whole piece of thermal conductive sheet 301 is placed on the first feed belt 101 of the first asynchronous jump cutter 100, and the first asynchronous jump cutter 100 is used to cut the whole piece of thermal conductive sheet 301 into strip thermal conductive sheets 302. The portion of the first discharge belt 102 with the strip thermal conductive sheet 302 is removed by cutting. Then, a first protective film 303 and a second protective film 304 covering the strip thermal conductive sheet 302 are attached to the cut first discharge belt 102 to form a stack 305. The stack 305 is turned over and arranged by the cut first discharge belt 102. On the second feeding belt 201 of the second asynchronous jump cutting machine 200, the second asynchronous jump cutting machine 200 is used to cut the stack 305 into rectangular thermal conductive sheets 306 arranged in an array and strip-shaped first protective films 307 and strip-shaped second protective films 308 arranged at intervals, and the part with the rectangular thermal conductive sheets 306, strip-shaped first protective films 307 and strip-shaped second protective films 308 on the second discharge belt 202 is removed by cutting. The above-mentioned production of thermal conductive sheet units arranged at intervals is achieved by asynchronous cutting, which can avoid material waste caused by cutting and removing excess materials, and effectively improve the utilization rate of thermal conductive sheet materials.

[0039] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope of the present invention.

Claims

1. A material-saving cutting method for a thermal conductive sheet, characterized in that: The cutting method comprises: Placing the entire thermal conductive sheet on the first feeding belt of the first asynchronous jump cutting machine; Using a first asynchronous jump cutting machine to cut the entire heat conducting sheet into strip-shaped heat conducting sheets spaced apart along a first direction; Cutting and removing the portion of the first discharging belt of the first asynchronous jump cutting machine with the strip-shaped heat conducting sheet; sequentially attaching a first protective film and a second protective film covering the strip-shaped heat conductive sheet to the cut first outfeed tape to form a laminate; Turning over the cut first outfeed belt with the stacked parts and extending it along the first direction to arrange it on the second infeed belt of the second asynchronous jump cutting machine, and removing the cut first outfeed belt; Using a second asynchronous jump cutting machine to cut the strip-shaped heat conducting sheet, the first protective film and the second protective film in the laminate to obtain rectangular heat conducting sheets arranged in an array and the strip-shaped first protective film and the strip-shaped second protective film arranged at intervals; Cut and remove the portion of the second discharge belt of the second asynchronous jump cutting machine with the rectangular heat conductive sheet, the strip-shaped first protective film and the strip-shaped second protective film.

2. The material-saving cutting method for thermal conductive sheet according to claim 1, characterized in that: After "cutting and removing the portion of the second discharge belt of the second asynchronous jump cutting machine having the rectangular heat conductive sheet, the first strip protective film and the second strip protective film", the method further includes: A release film covering the rectangular heat conductive sheet, the first strip protective film, and the second strip protective film is attached to the cut second outfeed tape and flipped over; Remove the cut second discharge tape and the strip-shaped second protective film on the release film.

3. The material-saving cutting method for thermal conductive sheet according to claim 1, characterized in that: The thickness of the first protective film ranges from 0.019 mm to 0.025 mm, and a hand-tear position is provided on the side of the first protective film covering the strip-shaped thermal conductive sheet.

4. The material-saving cutting method for thermal conductive sheets according to claim 1, characterized in that: The thickness of the second protective film ranges from 0.035 mm to 0.040 mm.

5. The material-saving cutting method for thermal conductive sheet according to claim 1, characterized in that: The first feed belt and the first discharge belt of the first asynchronous jump cutting machine are non-silicone release films, and the width of the first feed belt and the first discharge belt is greater than the width of the entire thermal conductive sheet by 90 mm to 110 mm.

6. The material-saving cutting method for thermal conductive sheets according to claim 1, characterized in that: The second feeding belt and the second discharging belt of the second asynchronous jump cutting machine are low-viscosity silicone protective films, and the width of the second feeding belt and the second discharging belt is greater than the width of the stack by 90 mm to 110 mm.

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