Heat-conducting fin feeding device

Abstract

The invention is a divisional application, and the application number of the original application is 2025102410494. The invention relates to the technical field of automatic transfer equipment, in particular to a heat-conducting fin feeding device. The heat-conducting sheet comprises a sheet material I and a sheet material II which are coplanar; a heat-conducting fin is attached to a bottom film, the bottom film is wound around a material disc, and the material disc is rotationally installed on a frame body of a feeder; the feeder comprises a stripping knife mounted on the movable frame body, and the bottom film extends from the material disc to the upper end surface and the front edge of the stripping knife; the material receiving platform is coplanar with the upper end surface of the stripping knife and is positioned on one side of the front edge of the stripping knife; the pair of material tensioning rollers are respectively arranged on the movable frame body and the frame body of the feeder; a bottom film extending from the stripping knife is wound on the pair of material tensioning rollers in an S shape; the winding roller is rotationally driven; the sticking head comprises a suction head, a suction surface A and a suction surface B are arranged on the suction head, and the moving assembly is used for moving the sticking head; and a material folding roller is arranged on the edge folding frame. Automatic feeding and edge folding of the heat-conducting fins can be achieved.

Description

[0001] This application is a divisional application. The application date of the original application is March 3, 2025. The application number is 2025102410494. The name of the invention is: A three-dimensional mounting device for a thermal conductive sheet. Technical Field

[0002] The invention relates to the technical field of automated transfer equipment, and in particular to a heat conducting sheet feeding device. Background Art

[0003] With the miniaturization of high-power electronic devices, the heat generated per unit volume has increased dramatically, and efficient heat dissipation design is urgently needed to avoid performance degradation. Thermal conductive sheets are widely used to fill the air gap between devices and housings to build heat conduction paths due to their high thermal conductivity and flexible bonding properties. Traditional thermal conductive sheet mounting equipment is mostly designed for flat or simple curved surfaces, using vacuum adsorption and roller pressing processes.

[0004] However, when the thermal conductive sheet needs to be attached to two intersecting surfaces (such as the outer shell of the charging head plug component), it is difficult to directly apply pressure to all surfaces at the same time to complete the attachment of the thermal conductive sheet. Moreover, when the target surface contains vertical or irregular intersecting surfaces, the traditional loading device cannot realize the automatic loading and folding of the thermal conductive sheet. Summary of the invention

[0005] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a thermally conductive sheet feeding device, which can realize automatic feeding and folding of the thermally conductive sheet.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions: A heat-conducting sheet feeding device, the heat-conducting sheet includes a sheet material 1 and a sheet material 2 on the same plane; the device includes a feeder, a base film and a material tray, the heat-conducting sheet is attached to the base film, the base film is wound around the material tray, and the material tray is rotatably mounted on a frame of the feeder; Among them, the loader includes: A stripping knife is mounted on a movable frame, and a bottom film extends from the material tray to cover the upper end surface and the front edge of the stripping knife; A material receiving platform is coplanar with the upper end surface of the stripping knife and is located on one side of the front edge of the stripping knife, and a sensor is provided corresponding to the material receiving platform; A pair of stretching rollers are respectively installed on the moving frame and the frame of the feeder, and the base film extending from the stripping knife is wound around the pair of stretching rollers in an S shape; A reel is driven to rotate, and the distal end of the base film extending from the material roller is wound around the reel; Also includes: The material pasting head comprises a suction head, and the suction head is provided with a suction surface A and a suction surface B, and the suction surface A and the suction surface B are used for adsorbing the sheet material 1 and the sheet material 2 respectively; A moving assembly for moving a placement head; The folding frame is provided with folding rollers adapted to the width of the sheet material.

[0007] It can be seen from the above technical solution that the present invention has the following beneficial effects: The present invention provides a heat conducting sheet feeding device, and the process of automatically feeding the heat conducting sheet includes the following steps: Pre-separation, the mobile frame moves to the point where the stripping knife is close to the material receiving platform, and the winding roller rotates to drive the bottom film to be transported toward the winding roller. During the transportation process, the bottom film passing the front edge of the stripping knife is separated from the heat conductive sheet attached to the upper end. The front end of the separated heat conductive sheet moves to a preset distance on the material receiving platform until it is detected by the sensor on the material receiving platform, at which time the bottom film transportation is stopped; Sucking the material, moving the mounting head until the suction surface A faces and fits the sheet material 1, and sucking the thermal conductive sheet, at this time the mounting head is pressed on the stripping knife and the material receiving platform; in this process, the abutment plate is in state 2 to prevent the abutment plate from colliding with the upper end surface of the stripping knife; it should be noted that the abutment plate is made of rigid material and the suction surface is made of flexible material.

[0008] The material is stripped and the movable frame moves toward the side away from the material receiving platform until the sucked thermal conductive sheet is separated from the bottom film. During this process, a pair of tensioning rollers move away from each other to tension the bottom film to realize automatic loading of the thermal conductive sheet.

[0009] Folding, relatively move the material pasting head until the second sheet of material is above the folding roller, and the folding roller is facing the abutment plate, relatively move the material pasting head to the folding roller to press the second sheet of material from the root to the end onto the suction surface B, and absorb the second sheet of material through the suction surface B. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic diagram of a heat conducting sheet in an embodiment of the present application; Figure 2 is a schematic diagram of a workpiece in an embodiment of the present application; Figure 3 A schematic diagram of a three-dimensional mounting device for a heat conductive sheet in one embodiment of the present application; Figure 4 for Figure 3 A partial enlarged view of the area A in the middle circle; Figure 5 This is a schematic diagram of a mounting head in an embodiment of the present application; Figure 6 It is a schematic diagram of the exploded components of a mounting head in one embodiment of the present application; Figure 7 It is a schematic diagram of a moving component and a mounting head in an embodiment of the present application; Figure 8 It is a schematic diagram of the three-dimensional structure of a feeder in one embodiment of the present application; Fig. 9This is a schematic diagram of the planar structure of a feeder in one embodiment of the present application; Fig.10 A schematic diagram of a tool in an embodiment of the present application; Fig.11 Schematic diagram of a folding frame in an embodiment of the present application.

[0011] In the figure: 1-heat conducting sheet; 101-sheet material 1; 102-sheet material 2; 2-patch head; 20-suction head; 201-suction surface A; 202-suction surface B; 203-groove; 21-presser; 211-butt plate; 212-plate frame; 213-elastic member 1; 214-driver; 215-limiting block; 22-mounting frame; 3- folding frame; 31- folding roller; 32- frame body; 33- roller seat; 34- elastic member 2; 4-tooling; 40-slot cavity; 5- Mobile components; 6-loader; 60-bottom film; 61-material tray; 62-movable frame; 620-stripping knife; 63-material receiving platform; 64-material spreading roller; 65-winding roller; 66-film pressing device; 661-support plate; 662-pressing plate; 9-workpiece; 90-target surface; 901-surface A; 902-surface B. DETAILED DESCRIPTION

[0012] Example 1 This embodiment provides Figure 3 A thermal conductive sheet three-dimensional mounting device is shown, which is used to Figure 1 The heat conducting sheet 1 is attached to Figure 2 On the target surface 90 of the workpiece 9 shown, the target surface 90 includes a surface A 901 and a surface B 902 connected to the surface A 901, the heat conducting sheet 1 includes a sheet 101 and a sheet 2 102 respectively adapted to and connected to the surface A 901 and the surface B 902, an adhesive layer is provided between the target surface 90 and the heat conducting sheet 1, and further includes: like Figure 5 and Figure 6 The material pasting head 2 shown in the figure comprises a suction head 20 and a presser 21. The suction head 20 is provided with a suction surface A 201 and a suction surface B 202 which correspond to the surface A 901 and the surface B 902 respectively and are provided with suction holes. The suction surface A 201 and the suction surface B 202 are used to adsorb the sheet material 1 101 and the sheet material 2 102 respectively. The presser 21 comprises a stop plate 211. The stop plate 211 comprises a state 1 in which the front edge is located at the junction of the suction surface A 201 and the suction surface B 202. A moving component 5 for moving the placement head 2 and / or the workpiece 9; When the mounting head 2 that adsorbs the thermal conductive sheet 1 moves relatively to the point where the sheet 101 is facing and attached to the surface A 901, the thermal conductive sheet 1 corresponding to the front edge of the abutment plate 211 is pressed against the junction of the surface A 901 and the surface B 902. The moving component 5 is used to move the mounting head 2 relatively toward the extension direction of the surface B 902 so that the abutment plate 211 presses the sheet 2 102 onto the surface B 902 from the root to the end.

[0013] Based on the above device, it is possible to attach a complete heat conducting sheet to a pair of intersecting surfaces. Figure 2 As shown, in this embodiment, surface A 901 corresponds to the upper bottom surface of the inner cavity of the workpiece 9, and surface B 902 is a side surface perpendicular to surface A 901. Specifically, in one embodiment, the workpiece 9 is a plug component of a charging head, surface A 901 corresponds to the inner wall of the shell cavity of the plug component, and surface B 902 corresponds to the side wall of the electronic device in the shell cavity of the plug component. The heat on the electronic device is evenly transferred to the inner wall of the shell cavity of the plug component through the heat conductive sheet 1.

[0014] If the plate 211 is in hard contact with the sheet 2 102, the stability of the pressure applied to the sheet 2 102 needs to be precisely controlled by the trajectory of the mobile mounting head 2, which is difficult to control and has poor stability. Figure 6 As shown, in this embodiment, the front edge of the corresponding state-abutment plate 211 protrudes from the second suction surface 202, and the material presser 21 also includes a plate frame 212, and the butt plate 211 is rotatably mounted (corresponding to the rotating joint A) on the plate frame 212. An elastic member 213 is provided between the plate frame 212 and the butt plate 211. During the process of the butt plate 211 pressing the sheet material 102 from the root to the end on the second surface 902, the elastic member 213 is used to apply an elastic force to the butt plate 211 to rotate in the direction of contacting the second surface 902. A limiting structure is also provided on the material pasting head 2. In the natural state, the elastic member 213 presses the butt plate 211 against the limiting structure. In this application, the elastic member 213 is used to make the butt plate 211 press the sheet material 102 from the root to the end on the second surface 902, and the butt plate 211 presses the sheet material 102 elastically against the second surface 902 to ensure the stability of the pressure. The front edge of the abutment plate 211 is convex from the second suction surface 202. On the one hand, when the sheet 101 is facing and in contact with the first surface 901, it can ensure that the second suction surface 202 as a whole is not fully in contact with the second surface 902. On the other hand, a space is reserved for the abutment plate 211 to rotate in the direction of storing energy for the elastic member 1 213. In this embodiment, the elastic member 1 213 is a compression spring that abuts between the abutment plate 211 and the plate frame 212. In other embodiments, the elastic member 1 213 can be a torsion spring.

[0015] Furthermore, in this embodiment, combined with Figure 1 and Figure 4 As shown, in the natural state, the sheet 101 and the sheet 2 102 are coplanar, and also include Fig.11The folding frame 3 shown in the figure is provided with a folding roller 31 adapted to the width of the sheet 2 102. After the suction surface 201 absorbs the sheet 1 101, the folding roller 31 is used to press the sheet 2 102 onto the surface 902 during the relative movement of the folding frame 3 and the material pasting head 2. The sheet 101 is first sucked and then the material pasting head 2 is relatively moved until the sheet 2 102 is above the folding roller 31, and the folding roller 31 is directly against the plate 211, and the material pasting head 2 is continuously moved to the folding roller 31 to press the sheet 2 102 from the root to the end onto the suction surface 202. The suction surface 202 absorbs the sheet 2 102, and the folding operation is realized. The above operation can be realized by driving the material pasting head 2 and / or the folding frame 3 to move. In this embodiment, the folding frame 3 is installed on the fixed frame body, and the moving assembly 5 drives the material pasting head 2 to move and perform the folding operation. Therefore, the thermal conductive sheet 1 of the flat sheet material is automatically folded and adsorbed on the first suction surface 201 and the second suction surface 202 .

[0016] In this embodiment, the folding frame 3 includes a frame body 32, on which a roller seat 33 is slidably connected in the horizontal direction, and a folding roller 31 is rotatably installed at one end of the roller seat 33 in the sliding direction, and an elastic member 2 34 is provided between the roller seat 33 and the frame body 32, and the elastic member 2 34 is used to apply an elastic force toward one side of the folding roller 31 to the roller seat 33. Based on the above device, when folding, the folding roller 31 is pressed from the root to the end of the sheet material 102 on the second suction surface 202 by the folding roller 31. The folding roller 31 is horizontally squeezed by the material attaching head 2, so that the roller seat 33 is displaced in the energy storage direction of the elastic member 2 34, and the elastic member 2 34 is used to roll the folding roller 31 tightly on the second suction surface 202 to ensure the flatness of the sheet material 102 attached to the second suction surface 202.

[0017] Combination Fig.10 As shown, in this embodiment, a tool 4 is also included, and a groove 40 is provided on the tool 4 for receiving and locking the workpiece 9. When the workpiece 9 is placed in the groove 40 at the mounting station, the first surface 901 faces upward. The tool 4 is used to position the workpiece 9 to ensure the quality of mounting. In this embodiment, the tool 4 is transferred and transported by the conveyor belt below, and a lifting mechanism is provided at the mounting station. Before mounting, the lifting mechanism lifts the tool 4 off the conveyor belt, and after mounting is completed, the lifting mechanism drops the tool 4 on the conveyor belt to perform overall transfer.

[0018] Combination Figure 5 As shown, in this embodiment, the mounting head 2 includes a mounting frame 22 , the suction head 20 and the presser 21 are mounted on the mounting frame 22 , and the mounting frame 22 is connected to the moving end of the moving component 5 .

[0019] Combination Figure 7As shown, in this embodiment, the moving assembly 5 includes a three-axis robot arm for driving the mounting head 2 to move linearly along the x, y, and z axes. Specifically, the three-axis robot arm includes an x-direction moving module, a y-direction moving module, and a z-direction moving module. The y-direction moving module is installed on the moving assembly of the x-direction moving module, a pair of z-direction moving modules are installed on the moving assembly of the y-direction moving module, and a pair of arranged mounting heads 2 are respectively installed on the moving assemblies of a pair of z-direction moving modules. In this embodiment, a rotation drive device is also included between the moving assembly of the z-direction moving module and the mounting head 2. The rotation drive device is used to drive the mounting head 2 to rotate, and its rotation center line is parallel to the z direction. In one embodiment, the moving assembly 5 can be a joint robot arm. In other embodiments, the moving assembly 5 also includes a moving device for driving the workpiece 9 to move, and the mounting of the thermal conductive sheet is realized by moving the workpiece 9 to change the relative position relationship between the mounting head 2 and the workpiece 9.

[0020] Furthermore, in one embodiment (not shown), the mounting frame 22 is floatingly mounted on the moving end of the moving assembly 5 in a direction perpendicular to the nail suction surface 201, and an elastic element is provided between the mounting frame 22 and the moving end of the moving assembly 5, and the elastic element is used to apply an elastic force toward the nail suction surface 201 to the mounting frame 22. When the sheet material 101 is attached to the nail surface 901, the attachment head 2 moves as a whole toward the energy storage direction of the elastic element, and the attachment pressure applied by the elastic element can reduce the positioning accuracy when attaching the sheet material 101.

[0021] Combination Figure 5 and Figure 6 As shown, in this embodiment, the presser 21 includes a driver 214, which is transmission-connected to the plate frame 212. The driver 214 is used to drive the plate frame 212 to move so that the abutment plate 211 switches between state one and state two. When the abutment plate 211 is in state two, the abutment plate 211 retracts into the inner side of the suction surface A 201 and the suction surface B 202, and the corresponding suction head 20 is provided with a groove 203 for accommodating the abutment plate 211. When the abutment plate 211 is in state one, the front edge extends out of the groove 203.

[0022] In this embodiment, the driver 214 is a cylinder mounted on the mounting frame 22, the plate frame 212 is connected to the moving component of the driver 214 and is slidably connected to the fixed component of the driver 214, and a limit block 215 is installed on the plate frame 212. In this embodiment, the limit block 215 serves as a limit structure, and in a natural state, the elastic member 213 abuts against the limit block 215. In other embodiments, the plate frame 212 can be slidably connected to the mounting frame 22. In other embodiments, the inner edge of the groove 203 can serve as a limit structure.

[0023] A thermal conductive sheet three-dimensional mounting method based on a thermal conductive sheet three-dimensional mounting device comprises the following steps: S1, taking materials, in the initial state, the sheet 1 101 and the sheet 2 102 are coplanar, and the attaching head 2 is relatively moved until the first suction surface 201 faces and attaches to the sheet 1 101 to absorb the thermal conductive sheet 1; S2, folding edge, relatively moving the material attaching head 2 until the second sheet 102 is above the material folding roller 31, and the material folding roller 31 is facing the plate 211, relatively moving the material attaching head 2 to the material folding roller 31 to press the second sheet 102 from the root to the end onto the second suction surface 202, and the second sheet 102 is sucked by the second suction surface 202; S3, stick the bottom surface, move the component 5 to move the sticking head 2 until the sheet 101 is facing and sticking to the surface A 901, and the heat conductive sheet 1 corresponding to the front edge position of the abutment plate 211 is pressed against the junction of the surface A 901 and the surface B 902. At this time, the sheet 2 102 and the surface B 902 are in a pre-pressing state; the pre-pressing state means that the sheet 2 102 and the surface B 902 are not tightly fitted or there is a gap.

[0024] S4, attaching the vertical surface, relatively moving the attaching head 2 to the front end of the abutment plate 211 to press the sheet 102 from the root to the end onto the second surface 902. During the attaching process of the vertical surface, the suction head 20 stops adsorbing the heat conducting sheet 1.

[0025] The adhesive layer may be pre-set on the thermal conductive sheet 1 or on the target surface 90 .

[0026] Combination Figure 3 , Figure 4 , Figure 8 and Fig. 9 As shown, in this embodiment, the adhesive layer is pre-set on the heat conductive sheet 1. The heat conductive sheet 1 is attached to the base film 60, the base film 60 is wound on the material tray 61, and the heat conductive sheet 1 is arranged along the extension direction of the base film 60.

[0027] It also includes a feeder 6, a material tray 61 is rotatably mounted on a frame of the feeder 6, and the feeder 6 includes: The stripping knife 620 is mounted on the movable frame 62, and the bottom film 60 extends from the material tray 61 to cover the upper end surface and the front edge of the stripping knife 620; A material receiving platform 63 is coplanar with the upper end surface of the stripping knife 620 and is located on the side of the front edge of the stripping knife 620, and a sensor is provided corresponding to the material receiving platform 63; A pair of stretching rollers 64 are respectively mounted on the movable frame 62 and the frame of the feeder 6, and the base film 60 extending from the stripping knife 620 is wound around the pair of stretching rollers 64 in an S shape; The reel 65 is driven to rotate, and the distal end of the base film 60 extending from the material roller 64 is wound around the reel 65 .

[0028] Based on the above device, the process of automatic feeding includes the following steps: S01: Pre-separation, the mobile frame 62 moves until the stripping knife 620 is close to the receiving platform 63, and the winding roller 65 rotates to drive the bottom film 60 to be transported toward the winding roller 65. During the transportation process, the bottom film 60 passing the front edge of the stripping knife 620 is separated from the thermal conductive sheet 1 attached to the upper end. The front end of the separated thermal conductive sheet 1 moves to a preset distance on the receiving platform 63 until it is detected by the sensor on the receiving platform 63, and the bottom film 60 is stopped from being transported; S02: Sucking material, moving the mounting head 2 until the suction surface 201 is facing and attached to the sheet material 101, and sucking the thermal conductive sheet 1, at this time the mounting head 2 is pressed on the stripping knife 620 and the material receiving platform 63; in this process, the abutment plate 211 is in state two to prevent the abutment plate 211 from colliding with the upper end surface of the stripping knife 620; it should be noted that the abutment plate 211 is made of rigid material and the suction surface is made of flexible material.

[0029] S03: Stripping the material, the movable frame 62 moves toward the side away from the receiving platform 63 until the sucked thermal conductive sheet 1 is separated from the base film 60. During this process, a pair of tensioning rollers 64 move away from each other to tension the base film 60 to achieve automatic loading of the thermal conductive sheet 1.

[0030] Furthermore, the feeder 6 also includes a film pressing device 66 disposed between the material tray 61 and the movable frame 62. The film pressing device 66 includes a pair of plates driven to move relative to each other. The bottom film 60 passes through the pair of plates. After step S01 is executed, the pair of plates move relative to each other to press the bottom film 60 to limit the movement of the bottom film 60. Specifically, the pair of plates includes a support plate 661 fixed to the frame of the feeder 6 and a pressing plate 662 driven to move up and down by a cylinder. Specifically, the sensor on the material receiving platform 63 is an optical fiber sensor longitudinally disposed on the material receiving platform 63, and the material receiving platform 63 is provided with a perforation corresponding to the optical fiber sensor.

[0031] The technical principles of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without creative work, and these methods will fall within the scope of protection of the present invention.

Claims

1. A thermal conductive sheet feeding device, characterized in that: The heat conducting sheet comprises a sheet material 1 and a sheet material 2 which are coplanar; and comprises: a feeder, a base film and a material tray, wherein the heat conducting sheet is attached to the base film, the base film is wound around the material tray, and the material tray is rotatably mounted on a frame of the feeder; Among them, the loader includes: A stripping knife is mounted on a movable frame, and a bottom film extends from the material tray to cover the upper end surface and the front edge of the stripping knife; A material receiving platform is coplanar with the upper end surface of the stripping knife and is located on one side of the front edge of the stripping knife, and a sensor is provided corresponding to the material receiving platform; A pair of stretching rollers are respectively installed on the moving frame and the frame of the feeder, and the base film extending from the stripping knife is wound around the pair of stretching rollers in an S shape; A reel is driven to rotate, and the distal end of the base film extending from the material roller is wound around the reel; Also includes: The material pasting head comprises a suction head, and the suction head is provided with a suction surface A and a suction surface B, and the suction surface A and the suction surface B are used for adsorbing the sheet material 1 and the sheet material 2 respectively; A moving assembly for moving a placement head; The folding frame is provided with folding rollers adapted to the width of the sheet material.

2. A heat conducting sheet feeding device according to claim 1, characterized in that: The feeder also includes a film pressing device arranged between the material tray and the movable frame, the film pressing device includes a pair of plates driven to move relative to each other, and the bottom film passes through the pair of plates.

3. A heat conducting sheet feeding device according to claim 2, characterized in that: A pair of plate bodies includes a supporting plate fixed on the feeder frame and a pressing plate driven to move up and down by a cylinder.

4. The heat conducting sheet feeding device according to claim 1, characterized in that: The material pasting head also includes a material presser, the material presser includes a backing plate, and the backing plate includes a state 1 in which the front edge is located at the junction of the first suction surface and the second suction surface.

5. A heat conducting sheet feeding device according to claim 4, characterized in that: In the corresponding state, the front edge of the abutting plate is convex to the suction surface B, and the presser also includes a plate frame, on which the abutting plate is rotatably mounted, and an elastic member 1 is arranged between the plate frame and the abutting plate.

6. A heat conducting sheet feeding device according to claim 5, characterized in that: The press includes a driver, which is in transmission connection with the plate frame. The driver is used to drive the plate frame to move so that the push plate switches between state one and state two. When the push plate is in state two, the push plate retracts into the inner side of suction surface A and suction surface B, and grooves for accommodating the push plate are provided on the inner suction heads corresponding to suction surface A and suction surface B. When the push plate is in state one, the front edge extends out of the groove.

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