A self-heating production line for polymer material impregnation film forming products

Abstract

This application relates to a self-heating production line for polymer material impregnation film-forming products, including a frame and a circular conveyor chain mounted on the frame. Hand-shaped molds are arrayed on the circular conveyor chain, and each hand-shaped mold passes through each production step sequentially under the conveyor chain's transport. An electric heating device is installed inside each hand-shaped mold, and electrical contact components connected to the electric heating device are provided on the hand-shaped mold. Each production step is respectively configured with a power-off zone, a breakpoint insulation zone, and / or a heating zone. When the circular conveyor chain transports the hand-shaped mold through the power-off zone, the energized contact of the hand-shaped mold's electrical contact components is disconnected. When the circular conveyor chain transports the hand-shaped mold through the breakpoint insulation zone, the energized contact of the hand-shaped mold's electrical contact components is disconnected at time intervals. When the circular conveyor chain transports the hand-shaped mold through the heating zone, the energized contact of the hand-shaped mold's electrical contact components is maintained. This application has the effect of reducing space usage requirements.

Description

Technical Field

[0001] This application relates to the technical field of production equipment, and in particular to a self-heating production line for polymer material impregnation film forming products. Background Technology

[0002] The development needs of industries producing high-polymer impregnated film-forming products such as latex, silicone, PVC, and nitrile (e.g., the glove industry) require increased production, reduced energy consumption, and lower costs. Energy conservation and consumption reduction are important factors for enterprises to create a favorable environment for survival and development.

[0003] Currently, the polymer film-forming product industry heavily relies on ceramic molds for production. However, ceramic materials are characterized by thick walls, poor thermal conductivity, and slow heating and cooling, which are significant factors contributing to the industry's high energy consumption. Metal materials, on the other hand, offer dimensional accuracy, excellent thermal conductivity, corrosion resistance, and the ability to produce sheets of various thicknesses. These characteristics perfectly suit the requirements of latex, silicone, PVC, and nitrile products. This aligns with the demands for large-scale production, low processing costs, high production efficiency, lightweight, high rigidity and thermal conductivity, corrosion resistance, high-temperature oxidation resistance, good shock resistance, long lifespan, low maintenance, ease of operation, and high profit margins. Therefore, stainless steel molds have emerged as a revolutionary new product, poised to overtake ceramic molds.

[0004] In the production process of film-forming products in the industry, the molds need to undergo tunnel drying, impregnation, water washing, acid and alkali washing, etc., which requires 3 to 7 baking processes. Each baking process has a different temperature, which alternates between 30 and 150 degrees Celsius. In addition, there are water washing and other cooling cleaning processes. Therefore, in order to save costs, the industry uses natural gas and coal in addition to electricity.

[0005] Among them, reference Figure 1 As shown, model heating requires a through-type furnace, using electricity, natural gas, or coal as heat sources. Heating is achieved through thermal radiation, but this method has very low utilization. Most heat is dissipated through the air, thermal radiation, and the furnace body, resulting in energy loss and high costs. Furthermore, the model heating is done in a separate furnace, which occupies a large portion of the entire production line, making the line too long and requiring excessive space. Summary of the Invention

[0006] To reduce site usage requirements, this application provides a self-heating production line for polymer material impregnation film-forming products.

[0007] The self-heating production line for polymer material impregnation film forming products provided in this application adopts the following technical solution: A self-heating production line for polymer material impregnation film forming products includes a frame and an annular conveyor chain set on the frame. Hand-shaped molds are arrayed on the annular conveyor chain, and the hand-shaped molds pass through each production process one by one under the transmission of the annular conveyor chain.

[0008] An electric heating device is provided inside the hand mold, and an electric contact component connected to the electric heating device is provided on the hand mold;

[0009] Each production process is equipped with a power-off zone, a breakpoint insulation zone, and / or a heating zone. When the circular conveyor chain transports the hand-shaped mold through the power-off zone, the energized contacts of the electrical contact components of the hand-shaped mold are disconnected. When the circular conveyor chain transports the hand-shaped mold through the breakpoint insulation zone, the energized contacts of the electrical contact components of the hand-shaped mold are disconnected at intervals. When the circular conveyor chain transports the hand-shaped mold through the heating zone, the energized contacts of the electrical contact components of the hand-shaped mold are maintained.

[0010] Preferably, the frame is provided with a conductive rail above the annular conveyor chain, the conductive rail being used to contact the electrical contact component to energize and heat the electric heating device in the hand mold;

[0011] The power-off zone is configured without conductive rails, the breakpoint insulation zone is configured with spaced conductive rails, and the heating zone is configured with continuous conductive rails.

[0012] Preferably, the conductive rail includes a first rail body and a second rail body. The first rail body is hollow, and the second rail body is slidably inserted into the first rail body. A first conductive metal sheet is arranged on the lower surface of the first rail body along its length direction, and a second conductive metal sheet is arranged on the lower surface of the second rail body along its length direction. A connecting metal sheet is fixed on the first conductive metal sheet, and the connecting metal sheet is bent toward one side of the second rail body to abut against the second conductive metal sheet.

[0013] Preferably, an insulating rubber layer is provided on the inner wall of the first track body.

[0014] Preferably, the hand-shaped mold is mounted on the annular conveyor chain by a mounting component. The mounting component includes a mounting base fixed on the annular conveyor chain and a rotating base rotatably mounted on the mounting base at both ends. A mounting sleeve is provided on the side wall of the rotating base. A connecting rod is fixed to the bottom end of the hand-shaped mold, and the end of the connecting rod is rotatably mounted in the mounting sleeve.

[0015] Preferably, the electrical contact component includes an electrical contact piece, a telescopic rod, and a conductive slip ring. The two ends of the telescopic rod are respectively fixed to the electrical contact piece and the mounting sleeve. The electrical contact piece is used to obtain electrical contact. The conductive slip ring is disposed in the mounting sleeve. A first wire is connected to the moving ring of the conductive slip ring, and a second wire is connected to the stationary ring of the conductive slip ring. The first wire passes through the connecting rod to connect to the electric heating device in the hand mold, and the second wire passes through the telescopic rod to connect to the electrical contact piece.

[0016] Preferably, the telescopic rod includes a first rod and a second rod. One end of the first rod is fixed to the electrical contact piece, and one end of the second rod is slidably inserted into the other end of the first rod. The other end of the second rod is fixed to the mounting sleeve. The first rod and the second rod are fitted with elastic springs, and the two ends of the elastic springs are respectively fixed to the first rod and the second rod.

[0017] Preferably, the hand mold is hollow, and a partition is provided inside the hand mold to form a closed mounting cavity inside the hand mold. The electric heating device is disposed inside the mounting cavity, and the mounting cavity is filled with a thermally conductive filler.

[0018] Preferably, the thermally conductive filler is graphite, graphene, or carbon nanotubes, or the thermally conductive filler is a mixture of graphite, graphene, and carbon nanotubes, or the thermally conductive filler is a mixture of graphite and graphene, or the thermally conductive filler is a mixture of graphene and carbon nanotubes, or the thermally conductive filler is a mixture of graphite and carbon nanotubes.

[0019] Preferably, the electric heating device includes an electric heating element, a thermal sensor, and a thermal sensor switch. The electric heating element and the thermal sensor are located inside the mounting cavity of the hand mold. The thermal sensor is connected to the thermal sensor switch, which is located outside the mounting cavity. The thermal sensor switch is used to control the on / off state of the electric heating element and is connected to the electric contact component.

[0020] In summary, this application includes at least one of the following beneficial technical effects:

[0021] 1. The self-heating production line of this application does not require a dedicated heating oven. It achieves simplification of the production line by rapidly heating the hand-shaped mold itself, thereby reducing the operating cost of the production line and shortening the overall length of the production line. This not only saves energy but also reduces the space requirements.

[0022] 2. The self-heating production line of this application heats up rapidly before the heating demand point. It has a fast heating speed, a long heat preservation time, and can achieve precise heating as well as intermittent heating, thereby greatly reducing the power consumption of the production line. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the heating furnace in the background art.

[0024] Figure 2 This is a schematic diagram of the production process on the production line.

[0025] Figure 3 This is a schematic diagram of the installation of a hand-shaped mold on a circular conveyor chain.

[0026] Figure 4 This is a diagram showing the state changes of the conductive rails.

[0027] Figure 5 This is a structural diagram of the mounting components.

[0028] Figure 6 This is a schematic diagram of the electrical contact component.

[0029] Figure 7 This is a structural diagram of a hand-shaped mold.

[0030] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Circular conveyor chain; 3. Hand mold; 31. Palm part; 32. Arm part; 33. Base part; 34. Partition plate; 35. Mounting cavity; 36. Thermally conductive filler; 4. Electric heating device; 41. Electric heating element; 42. Thermal sensor; 43. Thermal sensor switch; 5. Electrical contact component; 51. Electrical contact piece; 52. Telescopic rod; 521. First rod; 522. Second rod; 523. Elastic spring; 53. Conductive slip ring; 531. Moving ring; 532. Stationary ring; 54. First conductor; 55. Second conductor; 6. Conductive rail; 61. First rail body; 62. Second rail body; 63. First conductive metal sheet; 64. Second conductive metal sheet; 65. Connecting metal sheet; 66. Inclined surface; 7. Mounting component; 71. Mounting seat; 72. Rotating seat; 73. Mounting sleeve; 74. Connecting rod. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0032] A self-heating production line for polymer material impregnation film-forming products, referring to Figure 2As shown, the system includes a frame 1 and an annular conveyor chain 2 mounted on the frame 1. The frame 1 is equipped with a power unit for driving the annular conveyor chain 2. The self-heating production line for polymer material impregnation film-forming products involves multiple production processes. Hand-shaped molds 3 are arrayed on the annular conveyor chain 2, and the hand-shaped molds 3 pass through each production process one by one under the transmission of the annular conveyor chain 2.

[0033] This embodiment uses the production of polymer-impregnated film products, such as gloves, as an example. Glove production requires the following steps: hot rinsing of hand-shaped mold 3, coagulant impregnation, coagulant baking, first impregnation, first baking, second impregnation, second baking, polymer solution impregnation, main furnace baking, cooling tank, neutralization tank, chlorine washing, inspection by a stacking machine, and demolding. The above production processes are repeated to achieve glove production.

[0034] In the aforementioned production processes, the hand mold 3 needs to be heated during hot rinsing; it needs to be kept warm during coagulant impregnation, coagulant baking, primary impregnation, primary baking, secondary impregnation, and secondary baking; it needs to be cooled down when entering the polymer solution impregnation stage during secondary baking; and it needs to be rapidly heated and then kept warm during main furnace baking. No heating is required in the cooling tank, neutralization tank, chlorination washing, and laminating machine. Therefore, referring to… Figure 1 As shown, the existing hand mold 3 is heated by a separate heating furnace, which accounts for a large part of the length of the entire production line, resulting in an excessively long production line and a large space requirement.

[0035] Therefore, the self-heating production line of this application does not require a dedicated heating oven. It achieves rapid heating through the hand-shaped mold 3 itself, thus simplifying the production line, reducing operating costs, and shortening the overall production line length. This not only saves energy but also reduces space requirements. Furthermore, the self-heating production line of this application heats rapidly before the heating demand point, with fast heating speed, long heat retention time, and the ability to achieve precise heating as well as intermittent heating, thereby significantly reducing the production line's power consumption.

[0036] Specifically, an electric heating device 4 is installed inside the hand mold 3, and an electric contact component 5 connected to the electric heating device 4 is installed on the hand mold 3. Each production process is configured with a power-off zone, a breakpoint insulation zone, and / or a heating zone. When the circular conveyor chain 2 transports the hand mold 3 through the power-off zone, the energized contact of the electric contact component 5 of the hand mold 3 is disconnected; when the circular conveyor chain 2 transports the hand mold 3 through the breakpoint insulation zone, the energized contact of the electric contact component 5 of the hand mold 3 is disconnected at intervals; when the circular conveyor chain 2 transports the hand mold 3 through the heating zone, the energized contact of the electric contact component 5 of the hand mold 3 is maintained.

[0037] The following describes the power outage zone, the break point insulation zone, and the heating zone.

[0038] Reference Figure 2 and Figure 3 As shown, a conductive rail 6 is provided above the circular conveyor chain 2 on the frame 1. The conductive rail 6 is connected to the mains power and is used to contact the electrical contact component 5 to electrically heat the electric heating device 4 in the hand mold 3. The electric heating device 4 is powered by AC. Two conductive rails 6 are arranged side-by-side, one connected to the neutral wire and the other to the live wire. The two conductive rails 6 contact the electrical contact component 5 of the hand mold 3, thereby enabling the electric heating device 4 in the hand mold 3 to perform its heating function.

[0039] The power-off zone is configured without conductive rail 6, the breakpoint insulation zone is configured with conductive rail 6 spaced apart, and the heating zone is configured with conductive rail 6 continuously. In the above production process, the hot rinsing is sequentially set as the heating zone and the breakpoint insulation zone; the production process between hot rinsing and coagulant impregnation is set as the breakpoint insulation zone; the coagulant impregnation and coagulant baking are set as the breakpoint insulation zone; the first impregnation, the first baking, and the second impregnation are set as the breakpoint insulation zone; the second baking is sequentially set as the breakpoint insulation zone and the power-off zone; the polymer solution impregnation is set as the power-off zone; the main furnace baking is sequentially set as the heating zone and the breakpoint insulation zone; and the cooling tank, neutralization tank, chlorination washing, and laminating machine are set as the power-off zone.

[0040] Therefore, the conductive rails 6 are continuously arranged in the heating zone. When the circular conveyor chain 2 carries the hand-shaped mold 3 through the hot rinsing process, the electrical contact parts 5 of the hand-shaped mold 3 come into contact with the conductive rails 6. At this time, the electric heating device 4 is energized and begins to heat. The heating temperature reached by the electric heating device 4 is limited by the length of the conductive rails 6. The longer the contact time between the electrical contact parts 5 and the conductive rails 6, the higher the temperature value raised by the electric heating device 4 to the hand-shaped mold 3. Thus, by setting a predetermined length of conductive rails 6 in the hot rinsing process, and according to the fixed running speed of the circular conveyor chain 2, the electrical contact parts 5 on the hand-shaped mold 3 will disconnect from the conductive rails 6 when the required temperature value is just reached.

[0041] In the intermittent insulation zone, the conductive rails 6 are spaced out. When the circular conveyor chain 2 carries the hand-shaped mold 3 through the coagulant impregnation process, the electrical contact parts 5 of the hand-shaped mold 3 will intermittently contact and not contact the conductive rails 6. When the electrical contact parts 5 of the hand-shaped mold 3 are in contact with the conductive rails 6, the electric heating device 4 heats the hand-shaped mold 3; when the electrical contact parts 5 are not in contact with the conductive rails 6, the electric heating device 4 does not heat the hand-shaped mold 3, and the hand-shaped mold 3 cools down naturally. The hand-shaped mold 3 is maintained at a corresponding temperature through the intermittent contact of the electrical contact parts 5. It is worth noting that the temperature maintained by the hand-shaped mold 3 will be adjusted according to the length of the intermittent placement of the conductive rails 6.

[0042] In the power-off zone, the conductive rail 6 is not installed. At this time, the electric heating device 4 does not heat the hand mold 3, and the hand mold 3 cools down naturally.

[0043] The following describes conductive rail 6.

[0044] In one embodiment, the conductive rail 6 is arranged as a metal rail body, and both ends of the conductive rail 6 are connected to a power source via wires.

[0045] In another embodiment, refer to Figure 3 and 4 As shown, the conductive rail 6 includes a first rail body 61 and a second rail body 62. The first rail body 61 is hollow, and the second rail body 62 is slidably inserted into the first rail body 61. A first conductive metal sheet 63 is arranged along the length of the lower surface of the first rail body 61, and a second conductive metal sheet 64 is arranged along the length of the lower surface of the second rail body 62. An insulating rubber layer is provided on the inner wall of the first rail body 61. A connecting metal sheet 65 is fixed on the first conductive metal sheet 63, and the connecting metal sheet 65 is bent toward the second rail body 62 to abut against the second conductive metal sheet 64. One end of the first conductive metal sheet 63 is connected to a power source through a wire, and one end of the second conductive metal sheet 64 is connected to a power source through a wire.

[0046] When the length of the conductive rail 6 meets the usage requirements, the second rail body 62 will be housed within the first rail body 61. At this time, the electrical contact component 5 will contact the first conductive metal sheet 63 below the first rail body 61 and be energized. When the length of the conductive rail 6 needs to be adjusted, the second rail body 62 can be extended by pulling it out from the first rail body 61, and the electrical contact component 5 can contact the first conductive metal sheet 63 and the second conductive metal sheet 64 to be energized.

[0047] Therefore, by setting the second rail body 62, the length of the conductive rail 6 can be adjusted, thereby changing the required temperature value of the hand mold 3. Furthermore, by setting the second rail body 62, adjacent conductive rails 6 can be connected, allowing the conductive rail 6 to switch between the heating zone and the breakpoint insulation zone. This not only controls the required temperature of the hand mold 3 in the heating zone but also controls the insulation temperature of the hand mold 3 in the breakpoint insulation zone.

[0048] The following describes the hand mold 3, the electric heating device 4, and the electric contact component 5.

[0049] Reference Figure 3 and Figure 5 As shown, the hand-shaped mold 3 is mounted on the annular conveyor chain 2 via the mounting component 7. The mounting component 7 includes a mounting base 71 fixed on the annular conveyor chain 2 and a rotating base 72 rotatably mounted on the mounting base 71 at both ends. A mounting sleeve 73 is provided on the side wall of the rotating base 72. A connecting rod 74 is fixed to the bottom end of the hand-shaped mold 3. The end of the connecting rod 74 is rotatably mounted in the mounting sleeve 73. The connecting rod 74 is mounted in the mounting sleeve 73 via a bearing. During the process of being conveyed by the annular conveyor chain 2, the hand-shaped mold 3 needs to rotate in each production process. Therefore, by mounting the connecting rod 74 with a bearing, the hand-shaped mold 3 can be made to rotate.

[0050] Reference Figure 5 and Figure 6 As shown, the electrical contact component 5 includes an electrical contact piece 51, a telescopic rod 52, and a conductive slip ring 53. The two ends of the telescopic rod 52 are respectively fixed to the electrical contact piece 51 and the mounting sleeve 73. The electrical contact piece 51 is used to obtain electrical contact. The conductive slip ring 53 is disposed in the mounting sleeve 73. A first wire 54 is connected to the moving ring 531 of the conductive slip ring 53, and a second wire 55 is connected to the stationary ring 532 of the conductive slip ring 53. The first wire 54 passes through the connecting rod 74 to connect to the electric heating device 4 in the hand mold 3, and the second wire 55 passes through the telescopic rod 52 to connect to the electrical contact piece 51.

[0051] During the production process, the hand mold 3 needs to rotate through hot rinsing, coagulant impregnation, coagulant baking and other production processes. The conductive rail 6 is fixed on the frame 1. If the electrical contact piece 51 rotates synchronously with the hand mold 3, it will be difficult for the electrical contact piece 51 to contact the conductive rail 6. Therefore, by setting the conductive slip ring 53, the position of the electrical contact piece 51 is fixed to ensure stable contact with the conductive rail 6.

[0052] It is worth noting that if two conductive rails 6 are arranged side by side, two electrical contact pieces 51 will also be arranged side by side. One electrical contact piece 51 contacts the conductive rail 6 connected to the live wire, and the other electrical contact piece 51 contacts the conductive rail 6 connected to the neutral wire. The two electrical contact pieces 51 can be spaced apart, or an insulating layer can be provided between them. Each electrical contact piece 51 is connected to the stationary ring 532 of the conductive slip ring 53 via a second wire 55.

[0053] The telescopic rod 52 is made of insulating plastic and includes a first rod 521 and a second rod 522. One end of the first rod 521 is fixed to the electrical contact piece 51, and one end of the second rod 522 is slidably inserted into the other end of the first rod 521. The other end of the second rod 522 is fixed to the mounting sleeve 73. A spring 523 is fitted over both the first rod 521 and the second rod 522, with both ends of the spring 523 fixed to the first rod 521 and the second rod 522, respectively. The telescopic rod 52 can extend and retract, thereby improving the contact effect between the electrical contact piece 51 and the conductive rail 6 when they are in contact.

[0054] One end of the conductive rail 6 is provided with a bevel 66 to facilitate the electrical contact piece 51 to contact the lower surface of the conductive rail 6. The bevel 66 is provided at the end of the conductive rail 6 that first contacts the electrical contact component 5.

[0055] Reference Figure 5 and Figure 7 As shown, the hand mold 3 includes a palm part 31, an arm part 32 and a base part 33 in sequence. The hand mold 3 is hollow and a partition 34 is provided inside the hand mold 3. The partition 34 is located between the arm part 32 and the base part 33. The partition 34 separates the arm part 32 and the base part 33 to form a closed mounting cavity 35 inside the hand mold 3. The mounting cavity 35 is located between the arm part 32 and the palm part 31.

[0056] The partition 34 is installed inside the hand mold 3 by means of fixation or detachment. In one embodiment, the partition 34 is installed inside the hand mold 3 by means of detachment, and the inner wall of the hand mold 3 is provided with a plurality of connecting ears in the circumferential direction, and the partition 34 is connected to the connecting ears by connecting bolts. In another embodiment, the partition 34 is fixedly installed inside the hand mold 3, and the partition 34 is fixed inside the hand mold 3 by welding.

[0057] An electric heating device 4 is installed in the mounting cavity 35. The electric heating device 4 includes an electric heating element 41, a thermal sensor 42, and a thermal sensor switch 43. The electric heating element 41 and the thermal sensor 42 are located in the mounting cavity 35 of the hand mold 3. The thermal sensor 42 is connected to the thermal sensor switch 43. The thermal sensor switch 43 is located outside the mounting cavity 35. The thermal sensor switch 43 is used to control the on and off of the electric heating element 41. The thermal sensor switch 43 is connected to the electrical contact component 5.

[0058] The electric heating element 41 can be a heating wire. The electric heating element 41 is used to generate heat. The thermal induction switch 43 is used to turn on or off the electric heating element 41. The thermal sensor 42 can be a temperature sensor. The thermal sensor 42 is used to sense the temperature inside the hand mold 3. When the thermal sensor 42 senses that the temperature of the hand mold 3 exceeds the threshold, it will control the thermal induction switch 43 to disconnect the electric heating element 41, thereby achieving the protection function.

[0059] The mounting cavity 35 is filled with a thermally conductive filler 36, which is graphite, graphene, or carbon nanotubes, or a mixture of graphite, graphene, and carbon nanotubes, or a mixture of graphite and graphene, or a mixture of graphene and carbon nanotubes, or a mixture of graphite and carbon nanotubes.

[0060] This embodiment uses graphite as an example for illustration.

[0061] Comparison of thermal coefficients of graphite with other metals:

[0062]

[0063] It is evident that thermally conductive filler 36 possesses the following advantages:

[0064] 1. Fast heating speed; materials such as graphite, graphene, and carbon nanotubes have high heating power density and high heat flux density.

[0065] 2. Fast heat exchange time: Heat exchange through materials such as graphite, graphene, and carbon nanotubes can accelerate the heating rate by about five times.

[0066] 3. Long service life: When the thermally conductive filler 36 is working, due to its good thermal conductivity, high temperature resistance and large thermal expansion system, the electric heating device 4 can operate stably and have a long service life.

[0067] 4. High temperature resistance: The thermally conductive filler 36 allows it to operate at temperatures above 1200℃, ensuring high safety.

[0068] Therefore, the thermally conductive filler 36 has ultra-high thermal conductivity, low thermal resistance, and light weight. When the electric heating device 4 is connected to the current, it generates heat and quickly transfers the heat through the thermally conductive filler 36, resulting in better thermal uniformity of the hand mold body and thus improving the utilization rate of thermal energy.

[0069] The polymer material impregnation film product of this application can be used not only in the production of medical gloves and industrial gloves, but also, by replacing the hand mold 3 with other molds, in the production of balloons, condoms, polymer elastic headgear or thin-walled polymer impregnation products.

[0070] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A self-heating production line for polymer material impregnation film-forming products, characterized in that, Includes a frame (1) and an annular conveyor chain (2) set on the frame (1), on which hand-shaped molds (3) are arrayed and installed, and the hand-shaped molds (3) pass through each production process one by one under the transmission of the annular conveyor chain (2); An electric heating device (4) is provided inside the hand mold (3), and an electric contact component (5) connected to the electric heating device (4) is provided on the hand mold (3); Each production process is equipped with a power-off zone, a breakpoint insulation zone, and / or a heating zone. When the annular conveyor chain (2) transports the hand mold (3) through the power-off zone, the energized contact of the electrical contact component (5) of the hand mold (3) is disconnected. When the annular conveyor chain (2) transports the hand mold (3) through the breakpoint insulation zone, the energized contact of the electrical contact component (5) of the hand mold (3) is disconnected at intervals. When the annular conveyor chain (2) transports the hand mold (3) through the heating zone, the energized contact of the electrical contact component (5) of the hand mold (3) is maintained. The frame (1) is provided with a conductive rail (6) above the annular conveyor chain (2). The conductive rail (6) is used to contact the electrical contact component (5) so that the electric heating device (4) in the hand mold (3) is electrically heated. The power-off zone is configured to not have conductive rails (6), the break point insulation zone is configured to have conductive rails (6) spaced apart, and the heating zone is configured to have conductive rails (6) continuously. The hand mold (3) is mounted on the annular conveyor chain (2) by a mounting component (7). The mounting component (7) includes a mounting seat (71) fixed on the annular conveyor chain (2) and a rotating seat (72) rotatably mounted on the mounting seat (71) at both ends. A mounting sleeve (73) is provided on the side wall of the rotating seat (72). A connecting rod (74) is fixed at the bottom end of the hand mold (3). The end of the connecting rod (74) is rotatably mounted in the mounting sleeve (73). The electrical contact component (5) includes an electrical contact piece (51), a telescopic rod (52), and a conductive slip ring (53). The two ends of the telescopic rod (52) are fixed to the electrical contact piece (51) and the mounting sleeve (73), respectively. The electrical contact piece (51) is used to make electrical contact. The conductive slip ring (53) is disposed in the mounting sleeve (73). A first wire (54) is connected to the moving ring (531) of the conductive slip ring (53), and a second wire (55) is connected to the stationary ring (532) of the conductive slip ring (53). The first wire (54) passes through the connecting rod (74) to connect to the electric heating device (4) in the hand mold (3), and the second wire (55) passes through the telescopic rod (52) to connect to the electrical contact piece (51).

2. The self-heating production line for polymer material impregnation film-forming products according to claim 1, characterized in that, The conductive rail (6) includes a first rail body (61) and a second rail body (62). The first rail body (61) is hollow inside, and the second rail body (62) is slidably inserted into the first rail body (61). A first conductive metal sheet (63) is arranged on the lower surface of the first rail body (61) along its length direction, and a second conductive metal sheet (64) is arranged on the lower surface of the second rail body (62) along its length direction. A connecting metal sheet (65) is fixed on the first conductive metal sheet (63), and the connecting metal sheet (65) is bent toward the second rail body (62) to abut against the second conductive metal sheet (64).

3. The self-heating production line for polymer material impregnation film-forming products according to claim 2, characterized in that, An insulating rubber layer is provided on the inner wall of the first track body (61).

4. The self-heating production line for polymer material impregnation film-forming products according to claim 1, characterized in that, The telescopic rod (52) includes a first rod (521) and a second rod (522). One end of the first rod (521) is fixed to the electrical contact piece (51), and one end of the second rod (522) is slidably inserted into the other end of the first rod (521). The other end of the second rod (522) is fixed to the mounting sleeve (73). A spring spring (523) is sleeved on the first rod (521) and the second rod (522). The two ends of the spring spring (523) are respectively fixed on the first rod (521) and the second rod (522).

5. The self-heating production line for polymer material impregnation film-forming products according to claim 1, characterized in that, The hand mold (3) is hollow and has a partition (34) inside. The partition (34) separates the parts to form a closed mounting cavity (35) inside the hand mold (3). The electric heating device (4) is located inside the mounting cavity (35) and the mounting cavity (35) is filled with a thermally conductive filler (36).

6. The self-heating production line for polymer material impregnation film-forming products according to claim 5, characterized in that, The thermally conductive filler (36) is graphite, graphene, or carbon nanotube, or the thermally conductive filler (36) is a mixture of graphite, graphene, and carbon nanotube, or the thermally conductive filler (36) is a mixture of graphite and graphene, or the thermally conductive filler (36) is a mixture of graphene and carbon nanotube, or the thermally conductive filler (36) is a mixture of graphite and carbon nanotube.

7. The self-heating production line for polymer material impregnation film-forming products according to claim 5, characterized in that, The electric heating device (4) includes an electric heating element (41), a thermal sensor (42), and a thermal sensor switch (43). The electric heating element (41) and the thermal sensor (42) are located in the mounting cavity (35) of the hand mold (3). The thermal sensor (42) is connected to the thermal sensor switch (43). The thermal sensor switch (43) is located outside the mounting cavity (35). The thermal sensor switch (43) is used to control the on / off state of the electric heating element (41). The thermal sensor switch (43) is connected to the electric contact component (5).

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