Automatic slitting device for silica gel heat-conducting sheet

Abstract

The invention relates to the technical field of heat-conducting sheet processing, in particular to an automatic slitting device for silica gel heat-conducting sheets, which comprises a slitting machine, a transfer mechanism and a feeding mechanism, a heat source pipe is arranged at a cutter of the slitting machine, the transfer mechanism comprises a conveying plate and a material plate, the conveying plate is arranged in the slitting machine and is particularly positioned below the cutter, and the material plate is positioned below the cutter. An electric sliding rail is arranged in the conveying plate, the material plate is connected to the electric sliding rail, and the feeding mechanism comprises a material guide plate fixedly connected to one end of the splitting machine and provided with a through groove, a motor connected to the side face of the material guide plate and a rubber roller connected to an output shaft of the motor and located at the through groove of the material guide plate. According to the device, the cutter capable of being heated is used for slitting the silica gel heat-conducting fins, the cutter is prevented from being stuck with silica gel scraps in a high-temperature cutting mode, so that the continuous working capacity of the slitting machine is guaranteed, the feeding mechanism and the transferring mechanism are arranged, the silica gel heat-conducting fins can be automatically guided out, automatic feeding can be achieved, and the production efficiency is improved. And the automatic slitting effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat-conducting sheet processing, and in particular to an automatic slitting device for silicone heat-conducting sheets. Background Art

[0002] Silicone heat-conducting sheets have certain flexibility, excellent insulation, compressibility, and natural surface adhesiveness. They are produced specifically for design solutions that utilize gaps to transfer heat. They can fill gaps, complete heat transfer between the heat-generating part and the heat-dissipating part, and at the same time play roles such as insulation, shock absorption, and sealing. They can meet the design requirements of equipment miniaturization and ultra-thinness. They are highly technological and practical, with a wide range of applicable thicknesses, and are an excellent heat-conducting filling material, so they are widely used in electronic and electrical products.

[0003] In the production of silicone heat-conducting sheets, the slitting link is crucial. However, many problems have emerged in the actual application of existing slitting machines, seriously affecting production efficiency. During operation, workers need to accurately place the typeset silicone heat-conducting sheets on the workbench of the slitting machine, start the machine for cutting, and then take out the products after cutting, and so on in a cycle.

[0004] However, under long-term high-frequency cutting of the slitting machine, the cutting tool is extremely easy to stick to fragments of the silicone heat-conducting sheet. The silicone material itself has adhesiveness, and some fragments will adhere to the cutting tool. As the cutting continues, more and more fragments accumulate, interfering with the normal trajectory of the cutting tool, resulting in uneven cutting edges and the problem of continuous adhesion, that is, adjacent heat-conducting sheets are not completely separated after cutting. This not only makes the product appearance unqualified and the performance unstable, reducing the qualification rate, but also requires manual secondary processing, prolonging the production cycle.

[0005] At the same time, the entire slitting process highly depends on manual feeding and material taking. Workers not only need to pay attention to the cutting progress and ensure safety, but also need to deal with sudden equipment conditions, and are highly nervous. Moreover, the manual operation rhythm is difficult to match the high-speed operation of the equipment, resulting in a lot of equipment idle time and low overall efficiency.

[0006] It can be seen that the continuous adhesion of the cutting tool and the low efficiency of manual operation have become two major obstacles to the improvement of the production efficiency and quality of silicone heat-conducting sheet slitting, and technological innovation is urgently needed to break the situation. Summary of the Invention

[0007] In order to overcome the problem that the cutting tool is easy to stick to debris when cutting silicone heat-conducting sheets by a traditional slitting machine, and the disadvantage of low efficiency of manual feeding and material taking, the technical problem of the present invention is: to provide an automatic slitting device for silicone heat-conducting sheets.

[0008] The technical implementation solution of the present invention is as follows: An automatic cutting device for silicone thermal conductive sheets includes a cutting machine. A longitudinally moving cutting knife is provided in the middle of the cutting machine. The cutting knife is equipped with a power supply, and a heat source pipe is arranged at the cutting knife. It also includes a transfer mechanism and a feeding mechanism. The transfer mechanism includes a transfer plate and a material plate. The transfer plate is arranged inside the cutting machine, specifically below the cutting knife. An electric slide rail is arranged inside the transfer plate, and the material plate is connected to the electric slide rail. The feeding mechanism includes a conveyor belt, a guide plate, a motor, and a rubber roller. The conveyor belt is fixedly connected to one end of the cutting machine. The guide plate is cooperatively installed with the conveyor belt. The motor is connected to the side of the guide plate, and the output shaft of the motor is connected with a rubber roller. The rubber roller is located at the bottom of the guide plate. When the silicone thermal conductive sheet is on the guide plate, the motor is started to drive the rubber roller to rotate. Under the action of friction, the rubber roller horizontally pushes the lowermost silicone thermal conductive sheet onto the material plate. The electric slide rail inside the transfer plate is started, and the material plate is moved to below the cutting knife through the electric slide rail. After the cutting machine is started, the cutting knife cuts the silicone thermal conductive sheet on the material plate. After the cutting is completed, the electric slide rail drives the material plate to move backward again, thereby completing the discharging.

[0009] In a preferred embodiment of the present invention, it further includes a front cover and a rear cover. The front cover and the rear cover are respectively arranged on both sides of the cutting machine. Channels for the material plate to pass through are opened at the bottoms of the front cover and the rear cover.

[0010] In a preferred embodiment of the present invention, it further includes a discharge chute, a limiting rod, a movable baffle, a first electric push rod, and an infrared sensor. The discharge chute is arranged at the other end of the cutting machine. The limiting rod is horizontally and fixedly connected to the rear cover, and the lower end surface of the limiting rod is flush with the upper end surface of the material plate. First electric push rods are fixedly connected to the limiting rod. A movable baffle is fixedly connected between the extended parts of the first electric push rods. An infrared sensor is embedded in the middle of the rear cover. The infrared sensor cooperates with the first electric push rod. When the material plate moves backward or leaves the range of the infrared sensor, the first electric push rod will pull the movable baffle to move up and down.

[0011] In a preferred embodiment of the present invention, it further includes a wedge head push plate. The wedge head push plate is slidably inserted through one side of the material plate, and the wedge head push plate can be in pressing contact with the limiting rod, specifically located on the side close to the movable baffle. A spring is connected between the wedge head push plate and the material plate. The wedge head push plate can not only limit the silicone thermal conductive sheet at the end face of the material plate, but also move downward after contacting the movable baffle, leaving a space for the cut silicone thermal conductive sheet to pass through.

[0012] In a preferred embodiment of the present invention, there is also a pressing plate disposed at the cutting knife. A spring is connected between the pressing plate and the slitter. The pressing plate is in a fitting shape with the cutting knife. When the cutting knife is not cutting, the bottom surface of the pressing plate is lower than the cutting knife. The effect is that during the process of starting the slitter to drive the cutting knife to move downward, the pressing plate will first contact the silica gel heat conducting sheet on the material plate, and the pressing plate will press and fix the silica gel heat conducting sheet. Then, the spring inside the pressing plate is compressed, and then the cutting knife contacts the silica gel heat conducting sheet for cutting. It should be noted that the bottom surface of the pressing plate is a demoulding agent coating.

[0013] In a preferred embodiment of the present invention, there is also a second electric push rod. The front cover is slidably connected to one end of the slitter, and a second electric push rod is provided inside the slitter to provide power for the front cover.

[0014] In a preferred embodiment of the present invention, there is also a positioning rod fixedly connected to the front cover. The end of the positioning rod is arrow-shaped, which is used to correct the deviation of the silica gel heat conducting sheet on the material plate. Specifically, after the material plate receives the silica gel heat conducting sheet exported by the conveyor belt, during the process of the transmission plate horizontally pushing the material plate to the cutting knife, the positioning rod can correct the deviation of the silica gel heat conducting sheet in the material plate, so that the silica gel heat conducting sheet maintains a specified position during cutting.

[0015] The beneficial effects of the present invention: The device cuts the silica gel heat conducting sheet by setting a heatable cutting knife. By means of high-temperature cutting, the cutting knife is prevented from sticking to silica gel debris, thus ensuring the continuous working ability of the slitter. A feeding mechanism and a transfer mechanism are provided, which can not only automatically export the silica gel heat conducting sheet, but also automatically feed the material, achieving an automated cutting effect. Compared with the traditional manual feeding method, the device has a high degree of automation and good cutting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 It is a three-dimensional structural diagram of the slitter and the cutting knife of the present invention.

[0018] Figure 3 It is a three-dimensional structural diagram of the cutting knife and the heat source pipe of the present invention.

[0019] Figure 4 It is a three-dimensional structural diagram of the feeding mechanism of the present invention.

[0020] Figure 5 It is a three-dimensional structural diagram of the limiting rod and the movable baffle of the present invention.

[0021] Figure 6 It is a three-dimensional structural diagram of the material plate and the wedge head push plate of the present invention.

[0022] Figure 7This is a three-dimensional structural schematic diagram of the pressing plate of the present invention.

[0023] Figure 8 This is a three-dimensional structural schematic diagram of the front cover and the positioning rod of the present invention.

[0024] Among them, the above-mentioned drawings include the following reference numerals: 1, slitter; 101, cutting knife; 102, front cover; 103, rear cover; 2, heat source pipe; 3, conveyor plate; 4, material plate; 5, discharge chute; 6, guide plate; 7, motor; 8, rubber roller; 9, limiting rod; 10, movable baffle; 1001, first electric push rod; 1002, infrared sensor; 11, wedge head push plate; 12, pressing plate; 13, second electric push rod; 14, positioning rod. Detailed implementation manners

[0025] The present invention will be specifically described below with reference to the drawings.

[0026] Embodiment: An automatic slitting device for silicone heat-conducting sheets, as Figures 1-8 shown, includes a slitter 1. A longitudinally moving cutting knife 101 with a built-in power source is arranged in the middle of the slitter 1. A heat source pipe 2 is arranged at the cutting knife 101. When the slitter 1 operates, the heat source pipe 2 can heat the cutting knife 101 to reduce the adhesion of silicone heat-conducting sheet debris. It also includes a transfer mechanism and a feeding mechanism. The transfer mechanism includes a conveyor plate 3 and a material plate 4. The conveyor plate 3 is arranged in the slitter 1, specifically below the cutting knife 101. An electric slide rail is arranged in the conveyor plate 3, and the material plate 4 is connected to the electric slide rail. The feeding mechanism includes a conveyor belt, a guide plate 6, a motor 7, and a rubber roller 8. One end of the conveyor belt is connected to the front end part of the slitter 1. The guide plate 6 is fixedly connected to the front end of the slitter 1. The guide plate 6 cooperates with the conveyor belt. The motor 7 is connected to the side of the guide plate 6. The output shaft of the motor 7 is connected with a rubber roller 8. The rubber roller 8 is located at the bottom of the guide plate 6. When the silicone heat-conducting sheet is conveyed to the surface of the guide plate 6 by the conveyor belt, the motor 7 is started to drive the rubber roller 8 to rotate. Under the action of friction, the rubber roller 8 horizontally pushes the silicone heat-conducting sheet on the guide plate 6 onto the material plate 4. The electric slide rail in the conveyor plate is started, and the material plate 4 is moved to below the cutting knife 101 through the electric slide rail. After the slitter 1 is started, the cutting knife 101 cuts the silicone heat-conducting sheet on the material plate 4. After the cutting is completed, the electric slide rail drives the material plate 4 to move backward again to complete the discharging.

[0027] As Figure 1 and Figure 5 shown, it also includes a front cover 102 and a rear cover 103. The front cover 102 and the rear cover 103 are respectively arranged on the front and rear sides of the slitter 1. Channels through which the material plate 4 passes are opened at the bottoms of the front cover 102 and the rear cover 103. The front cover 102 is slidably connected to the slitter 1, and an electric push rod 13 is arranged in the slitter 1 to provide power for the front cover 102.

[0028] As Figure 1 and Figure 5 shown, it also includes a discharge chute 5, a limiting rod 9 and a movable baffle 10. The discharge chute 5 is arranged at the other end of the slitter 1. The limiting rod 9 is horizontally and fixedly connected to the rear cover 103, and the lower end surface of the limiting rod 9 is flush with the upper end surface of the material plate 4. A first electric push rod 1001 is provided on each of the limiting rods 9. A movable baffle 10 is arranged between the telescopic parts of the first electric push rods 1001. An infrared sensor 1002 is arranged in the middle of the rear cover 103. The infrared sensor 1002 controls the telescopic movement of the first electric push rod 1001 by transmitting signals.

[0029] As Figure 6 shown, it also includes a wedge head push plate 11. The wedge head push plate 11 is slidably inserted through one side of the material plate 4, and the wedge head push plate 11 can be in pressing contact with the limiting rod 9, specifically located on the side close to the movable baffle 10. A spring is connected between the wedge head push plate 11 and the material plate 4. The wedge head push plate 11 can not only limit the silica gel heat conducting sheet on the end surface of the material plate 4, but also move downward after contacting the movable baffle 10, leaving a space for the cut silica gel heat conducting sheet to pass through.

[0030] As Figure 7 shown, it also includes a pressing plate 12. The pressing plate 12 is arranged at the cutting knife 101. A spring is connected between the pressing plate 12 and the slitter 1. The pressing plate 12 is in an embedded shape with the cutting knife 101. When the cutting knife 101 is not cutting, the bottom surface of the pressing plate 12 is lower than the cutting knife 101. The effect is that during the process of starting the slitter 1 to drive the cutting knife 101 to move downward, the pressing plate 12 will first contact the silica gel heat conducting sheet on the material plate 4. The pressing plate 12 will press and fix the silica gel heat conducting sheet, and then the spring in the pressing plate 12 will be compressed, and then the cutting knife 101 will contact the silica gel heat conducting sheet for cutting. It should be noted that the bottom surface of the pressing plate 12 is coated with a release agent.

[0031] As Figure 8 shown, it also includes a positioning rod 14. An installation hole is opened on the front cover 102. The positioning rod 14 is fixedly connected to the installation hole of the front cover 102. The end of the positioning rod 14 is arrow-shaped, which is used to correct the deviation of the silica gel heat conducting sheet on the material plate 4. Specifically, after the material plate 4 receives the silica gel heat conducting sheet led out by the guide plate 6, during the process of the transmission plate horizontally pushing the material plate 4 to the cutting knife 101, the positioning rod 14 can correct the deviation of the silica gel heat conducting sheet in the material plate 4, so that the silica gel heat conducting sheet maintains a specified position during cutting.

[0032] Working principle: The silicone thermal conductive sheet is conveyed to the material guiding plate 6 through a conveyor belt. The motor 7 is started to drive the rubber roller 8 to rotate. Under the action of friction, the rubber roller 8 exports the silicone thermal conductive sheet on the surface of the material guiding plate 6 backward. The silicone thermal conductive sheet is conveyed to the material plate 4. Then, the conveying plate 3 moves the material plate 4 to the lower part of the cutting knife 101 through the internal electric slide rail. During this period, the horizontal positioning rod 14 fixedly connected to the front cover 102 can correct the position of the silicone thermal conductive sheet on the material plate 4 to ensure the specified cutting position. Then, the slitter 1 is started and the silicone thermal conductive sheet is slit by the cutting knife 101. A heat source pipe 2 is connected to the cutting knife 101, so that the cutting knife 101 maintains an angle of 60-80°, thereby preventing the adhesion of silicone thermal conductive sheet debris. When the cutting knife 101 moves down, the pressing plate 12 can press and fix the silicone thermal conductive sheet to ensure the slitting quality. After slitting, the conveying plate 3 conveys the material plate 4 backward again. The wedge head push plate 11 at the rear end of the material plate 4 moves into the range of the infrared sensor 1002. The infrared sensor 1002 controls the first electric push rod 1001 to contract, pulling the movable baffle 10 upward. The material plate 4 moves backward behind the slitter 1. When the end of the material plate 4 reaches the range of the infrared sensor 1002, the first electric push rod 1001 extends again, driving the movable baffle 10 to reset downward and abut against the material plate 4. At this time, the movable baffle 10 is located at the left end of the slit silicone thermal conductive sheet. The limiting rod 9 presses down the wedge head push plate 11, and then the material plate 4 is controlled to return through the electric slide rail. The movable baffle 10 can push the slit silicone thermal conductive sheet to the discharge chute 5 for unified discharge for subsequent processing.

[0033] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. An automatic cutting device for silica gel heat-conducting sheets, characterized in that, It includes a slitter (1), a front cover (102) and a rear cover (103). The front cover (102) and the rear cover (103) are respectively arranged on both sides of the slitter (1). A longitudinally moving cutter (101) is arranged in the middle of the slitter (1). A heat source pipe (2) is configured at the cutter (101). It also includes a transfer mechanism and a feeding mechanism. The transfer mechanism includes a transfer plate (3) and a material plate (4). The transfer plate (3) is arranged inside the slitter (1), specifically below the cutter (101). An electric slide rail is arranged inside the transfer plate (3). The material plate (4) is connected to the electric slide rail. Channels through which the material plate (4) passes are opened at the bottoms of the front cover (102) and the rear cover (103). The feeding mechanism includes a conveyor belt, a guide plate (6), a motor (7) and a rubber roller (8). The guide plate (6) is fixedly connected to one end of the slitter (1). The motor (7) is connected to the upper left side of the slitter (1). The output shaft of the motor (7) is connected to the rubber roller (8). The rubber roller (8) is located at the bottom of the guide plate (6). The silica gel heat conducting sheet is conveyed to the guide plate (6) through the conveyor belt. The motor (7) drives the rubber roller (8) to rotate. The rubber roller (8) horizontally pushes the silica gel heat conducting sheet on the surface of the guide plate (6) onto the material plate (4). The material plate (4) moves to below the cutter (101). After the slitter (1) is started, the cutter (101) cuts the silica gel heat conducting sheet on the material plate (4).

2. The automatic slitting device for a silicone thermal conductive sheet according to claim 1, wherein, It also includes a discharge chute (5), a limit rod (9) and a movable baffle (10). The discharge chute (5) is arranged at the other end of the slitter (1). The limit rod (9) is horizontally and fixedly connected to the rear cover (103), and the lower end surface of the limit rod (9) is flush with the upper end surface of the material plate (4). First electric push rods (1001) are arranged on the limit rod (9). An infrared sensor (1002) is arranged in the middle of the rear cover (103). The movable baffle (10) is fixedly connected between the first electric push rods (1001).

3. The automatic cutting device for a silicone thermal conductive sheet according to claim 2, characterized in that, It also includes a wedge head push plate (11). The wedge head push plate (11) is slidably inserted through one side of the material plate (4), and the wedge head push plate (11) can be in pressing contact with the limit rod (9), specifically located on the side close to the movable baffle (10).

4. An automatic cutting device for a silicone thermal conductive sheet according to claim 3, characterized in that, It also includes a pressing plate (12). The pressing plate (12) is arranged at the cutter (101). A spring is connected between the pressing plate (12) and the slitter (1). The pressing plate (12) is in an embedded shape with the cutter (101).

5. An automatic cutting device for silica gel heat-conducting sheet according to claim 4, characterized in that It also includes a second electric push rod (13). The front cover (102) is slidably connected to one end of the slitter (1). The second electric push rod (13) arranged inside the slitter (1) provides power for the front cover (102).

6. The automatic slicing device for a silica gel heat-conducting sheet according to claim 5, wherein It also includes a positioning rod (14). Multiple positioning holes are opened on the front cover. The positioning rod (14) is fixedly connected to the positioning holes on the front cover (102).

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