New energy automobile door panel interior trim part injection mold

Abstract

The invention belongs to the technical field of injection molding, and particularly relates to a new energy automobile door panel interior trim part injection mold which comprises an upper mold body and a lower mold body, guide rods are fixedly arranged at the four corners of the bottom of the upper mold body, and guide grooves matched with the guide rods are formed in the four corners of the top of the lower mold body. Two sprue gates are formed in the top of the upper mold; the two heating mechanisms are arranged in the upper mold and the lower mold respectively, and the two heating mechanisms are both located under the middle portions of the two sprue gates; and the performance detection mechanism is arranged between the mold core of the upper mold and the mold core of the lower mold. Through the synergistic effect of the heating mechanism, the performance detection mechanism, the exhaust mechanism, the gas filtering mechanism and the PLC, the temperature of a welding part can be accurately controlled to reduce welding marks, the device adapts to the fluidity difference of melts of different materials to reduce cold joints and bubbles, melt degradation is detected and avoided to guarantee the product performance, and the product quality is improved. And exhaust is purified to meet environmental protection requirements.

Description

Technical Field

[0001] This invention belongs to the field of injection molding technology, and in particular relates to an injection mold for interior door panel parts of new energy vehicles. Background Technology

[0002] Against the backdrop of the rapid development of the new energy vehicle industry, the main trim panel of the car door is a key component of the vehicle's interior appearance and function. Its injection molding quality directly affects the overall quality and user experience of the vehicle. Therefore, the requirements for the use of injection molds are relatively high, such as the injection mold for new energy vehicle door interior parts disclosed in announcement number CN119858283B. Because the main trim panels of new energy vehicle door panels need to cover a large installation area, two or more gates are usually used in injection molding to ensure that the melt can fully fill the mold cavity. However, the setting of multiple gates inevitably leads to the melt merging within the mold cavity. This merging point is the weld line, which becomes a critical area affecting product quality (taking two gates as an example, the center of the two gates is the weld line). Since the temperature of the weld line is difficult to control precisely, if the melt temperature drops before merging, the diffusion and fusion between molecules will be insufficient, resulting in obvious weld lines on the product surface, which will damage the appearance consistency of the main trim panel. In addition, the melt fluidity of main trim panels made of different materials (such as modified polypropylene, polycarbonate alloy, etc.) varies significantly during the molding process. When the melt fluidity is insufficient, not only will a cold seam with low bonding strength be formed at the weld line, but gas will also easily be trapped due to uneven filling, further aggravating the defects at the weld line and affecting the structural stability and service life of the product.

[0003] To address this, an injection mold for interior door panel components of new energy vehicles is proposed. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing an injection mold for interior door panel components of new energy vehicles.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an injection mold for interior door panel parts of new energy vehicles, comprising an upper mold and a lower mold, wherein guide rods are fixedly provided at the four bottom corners of the upper mold, and guide grooves that cooperate with the guide rods are provided at the four top corners of the lower mold, and two pouring gates are provided at the top of the upper mold, and further comprising; Two heating mechanisms are respectively disposed inside the upper mold and the lower mold, and both heating mechanisms are located directly below the center of the two pouring gates; A performance testing mechanism is disposed between the mold core of the upper mold and the mold core of the lower mold. The performance testing mechanism is used to test the temperature, flow rate and pressure of the melt at the welding part, and the performance testing mechanism is linked with the heating mechanism. An exhaust mechanism is located inside the upper mold, and the exhaust mechanism is linked to the performance testing mechanism. A gas filtration mechanism is provided at the upper end of the exhaust mechanism, and the gas filtration mechanism is used to purify the gas discharged from the welding part. The PLC controller is located outside the upper and lower molds, and the heating mechanism, performance testing mechanism and exhaust mechanism are all electrically connected to the PLC controller.

[0006] Preferably, the heating mechanism includes a mounting groove disposed on the side wall of the upper mold, a heating sleeve disposed inside the mounting groove, a heating tube fixedly disposed inside the heating sleeve, one side of the heating sleeve extending to the outside of the mounting groove and fixedly disposed on a mounting plate, and two bolts threadedly connected to the side wall of the upper mold are symmetrically disposed on the side wall of the mounting plate.

[0007] Preferably, a heat-conducting plate is fixedly embedded in the core of the upper mold at a position corresponding to the heating tube, and the heat-conducting plate is made of alumina ceramic plate.

[0008] Preferably, the performance testing mechanism includes heat insulation sleeves fixedly disposed inside the heat-conducting plate of the upper mold and fixedly disposed inside the heat-conducting plate of the lower mold. An infrared flow rate sensor transmitter and an infrared flow rate sensor receiver are respectively fixedly disposed inside the two heat insulation sleeves. An infrared light-transmitting sheet is fixedly disposed at the opening of each of the two heat insulation sleeves. A temperature sensor and a pressure sensor are fixedly embedded on the surface of the heat-conducting plate of the lower mold.

[0009] Preferably, the venting mechanism includes an venting pipe fixedly disposed inside the upper mold, the lower end of the venting pipe extending into the mold core of the upper mold, and the upper end of the venting pipe extending to the top of the upper mold and fixedly provided with a one-way throttle valve, and a gas composition sensor fixedly disposed on the pipe wall of the venting pipe and above the one-way throttle valve.

[0010] Preferably, the upper mold core is provided with a transverse air guide groove at a position corresponding to the exhaust pipe, and the air guide groove passes through the surface of the heat-conducting plate of the upper mold.

[0011] Preferably, the gas filtration mechanism includes a lower connecting pipe threaded onto the upper end of the exhaust pipe, a filter cylinder fixedly mounted on the upper end of the lower connecting pipe, a multi-stage filter layer fixedly mounted inside the filter cylinder, and an upper connecting pipe detachably mounted on the top of the filter cylinder.

[0012] Preferably, the top of the filter cylinder is provided with a circular opening, and the inside of the circular opening is provided with a cylinder cover, and the lower end of the upper connecting pipe is fixedly disposed in the middle of the cylinder cover.

[0013] Compared with existing technologies, the advantages of this invention are as follows: 1. By setting up the linkage between the heating mechanism and the performance testing mechanism, the temperature of the melt at the welding point can be monitored in real time. When the temperature is lower than the threshold, the PLC controller immediately starts the heating tube. The heat is quickly transferred to the welding area through the aluminum alloy heat conduction plate, maintaining the melting state and molecular diffusion ability of the melt, promoting the full fusion of the melt, reducing obvious weld lines caused by sudden temperature drops, and ensuring that materials with different temperature sensitivity can maintain a good bonding state during welding.

[0014] 2. Through the performance detection mechanism and venting mechanism, the infrared flow rate sensor transmitter and receiver monitor the melt flow rate in real time. Combined with the filling pressure feedback from the pressure sensor, the PLC controller can dynamically adjust the heating power (to increase the temperature of melts with insufficient flowability) and the injection speed of the injection molding machine (to avoid turbulence and air entrapment caused by excessive flow rate). At the same time, the one-way throttle valve of the venting mechanism can adjust the venting volume according to the flowability and pressure status, and promptly discharge the trapped gas, reducing cold joints caused by insufficient flowability and bubbles and pinholes caused by gas entrapment, adapting to the molding requirements of different materials.

[0015] 3. By using a gas composition sensor and a gas filtration mechanism, the degradation substances of raw materials in the exhaust gas can be detected. The temperature can be adjusted by linking the heating mechanism with the PLC controller to avoid excessive degradation of the melt and affect product performance. The multi-stage filtration layer of the gas filtration mechanism can purify the exhaust gas and intercept melt droplets, dust and volatile organic compounds, thus meeting the environmental protection requirements of production. Attached Figure Description

[0016] Figure 1 This is a front perspective view of an injection mold for interior door panel parts of a new energy vehicle provided by the present invention; Figure 2 This is a three-dimensional view of the back of an injection mold for interior door panel parts of a new energy vehicle provided by the present invention; Figure 3 This is a perspective view of the upper mold of an injection mold for interior door panel parts of a new energy vehicle, provided by the present invention. Figure 4 This is a bottom-view perspective view of the upper mold of an injection mold for interior door panel parts of a new energy vehicle, provided by the present invention. Figure 5 This is a top perspective view of the lower mold of an injection mold for interior door panel parts of a new energy vehicle, provided by the present invention. Figure 6 This is a perspective view of a performance testing mechanism for injection molds of interior door panel parts for new energy vehicles, provided by the present invention. Figure 7 This is a perspective view of the exhaust mechanism and gas filtration mechanism of the injection mold for interior door panel parts of a new energy vehicle provided by the present invention.

[0017] In the diagram: 1 Upper mold, 2 Lower mold, 3 Guide rod, 4 Guide groove, 5 Sprue, 6 Heating mechanism, 61 Mounting groove, 62 Heating sleeve, 63 Heating tube, 64 Mounting plate, 65 Bolt, 66 Heat-conducting plate, 7 Performance testing mechanism, 71 Heat insulation sleeve, 72 Infrared flow rate sensor transmitter, 73 Infrared flow rate sensor receiver, 74 Infrared light transmittance sheet, 75 Temperature sensor, 76 Pressure sensor, 8 Exhaust mechanism, 81 Exhaust pipe, 82 One-way throttle valve, 83 Gas composition sensor, 84 Gas guide groove, 9 Gas filtration mechanism, 91 Lower connecting pipe, 92 Filter cylinder, 93 Multi-stage filter layer, 94 Upper connecting pipe, 95 Cylinder cover, 10 PLC controller. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] like Figures 1-7 As shown, an injection mold for interior door panel parts of a new energy vehicle includes an upper mold 1 and a lower mold 2. Guide rods 3 are fixedly provided at the four bottom corners of the upper mold 1, and guide grooves 4 that cooperate with the guide rods 3 are provided at the four top corners of the lower mold 2, which can increase the precision of the fit between the upper mold 1 and the lower mold 2. Two pouring gates 5 are provided at the top of the upper mold 1. The interior of the upper mold 1 and the lower mold 2, located in the middle of the two pouring gates 5, is the melting part of the melt (the number of pouring gates 5 is two or more, and two pouring gates 5 are taken as an example here). Two heating mechanisms 6 are respectively installed inside the upper mold 1 and the lower mold 2, and both heating mechanisms 6 are located directly below the center of the two pouring gates 5. The heating mechanism 6 includes a mounting groove 61 provided on the side wall of the upper mold 1. A heating sleeve 62 is provided inside the mounting groove 61. A heating tube 63 is fixedly installed inside the heating sleeve 62. One side of the heating sleeve 62 extends to the outside of the mounting groove 61 and is fixedly installed on a mounting plate 64. The side wall of the mounting plate 64 is symmetrically provided with two bolts 65 that are threaded to the side wall of the upper mold 1. When it is necessary to remove the heating tube 63 from inside the upper mold 1 and the lower mold 2, the heating mechanism 6 can be used to remove the heating tube 63. At this time, the workers loosen the bolts 65 with a wrench and then remove the heating sleeve 62 from the inside of the mounting groove 61. At the same time, the heating tube 63 set inside the heating sleeve 62 is also removed. The core of the upper mold 1 is fixedly embedded with a heat-conducting plate 66 at the position corresponding to the heating tube 63. The heat-conducting plate 66 is made of alumina ceramic plate. The heat-conducting plate 66 can quickly transfer the heat inside the mounting groove 61 to the inside of the upper mold 1 and the lower mold 2. The alumina ceramic material has excellent thermal conductivity, strong wear resistance and excellent high temperature resistance, which not only improves the efficiency of heat conduction to the melt, but also has a long service life.

[0020] The performance testing mechanism 7 is located between the core of the upper mold 1 and the core of the lower mold 2. The performance testing mechanism 7 is used to test the temperature, flow rate, and pressure of the melt at the weld joint, and it is linked to the heating mechanism 6. The performance testing mechanism 7 includes heat insulation sleeves 71 fixedly disposed inside the heat-conducting plate 66 of the upper mold 1 and the heat-conducting plate 66 of the lower mold 2. An infrared flow rate sensor transmitter 72 and an infrared flow rate sensor receiver 73 are respectively fixed inside the two heat insulation sleeves 71. The heat insulation sleeves 71 are made of aluminum silicate fiber, which has good high-temperature resistance, reducing the impact of high temperatures on the infrared flow rate sensor transmitter 72 and the infrared flow rate sensor receiver 73. To mitigate the impact, infrared light-transmitting sheets 74 are fixedly installed at the openings of both heat insulation sleeves 71. The infrared light-transmitting sheets 74 are made of sapphire glass, which has high infrared transmittance, high temperature resistance and stability, and wear resistance and impact resistance. Temperature sensors 75 and pressure sensors 76 are fixedly embedded on the surface of the heat-conducting plate 66 of the lower mold 2. Both temperature sensors 75 and pressure sensors 76 are high temperature resistant sensors, and their own structures are isolated and protected to prevent them from directly contacting the melt. This ensures that they can work stably in a continuous high temperature environment and avoids the decrease in detection accuracy, component damage or signal distortion caused by excessive temperature.

[0021] The exhaust mechanism 8 is located inside the upper mold 1 and is linked with the performance testing mechanism 7. The exhaust mechanism 8 includes an exhaust pipe 81 fixedly installed inside the upper mold 1. The lower end of the exhaust pipe 81 extends into the mold core of the upper mold 1, and the upper end of the exhaust pipe 81 extends to the top of the upper mold 1 and is fixedly equipped with a one-way throttle valve 82. The one-way conduction characteristic of the one-way throttle valve 82 ensures smooth gas discharge and strictly prevents external air from flowing back into the cavity. A gas composition sensor 83 is fixedly installed on the pipe wall of the exhaust pipe 81 above the one-way throttle valve 82. The gas composition sensor 83 is used to detect the gas. A gas guide groove 84 is laterally opened in the mold core of the upper mold 1 at the position corresponding to the exhaust pipe 81. The gas guide groove 84 passes through the surface of the heat-conducting plate 66 of the upper mold 1. The gas guide groove 84 can improve the gas discharge effect of the welding part. The gas discharged from the gas guide groove 84 is then discharged outward through the exhaust pipe 81.

[0022] A gas filtration mechanism 9 is located at the upper end of the exhaust mechanism 8 and is used to purify the gas discharged from the welding part. The gas filtration mechanism 9 includes a lower connecting pipe 91 threaded onto the upper end of the exhaust pipe 81. A filter cylinder 92 is fixedly installed at the upper end of the lower connecting pipe 91. A multi-stage filter layer 93 is fixedly installed inside the filter cylinder 92. The multi-stage filter layer 93 includes a metal sintered mesh layer, a glass fiber felt layer, and an activated carbon fiber cloth layer. An upper connecting pipe 94 is detachably installed at the top of the filter cylinder 92. The top of the filter cylinder 92 has a circular opening, and a cylinder cover 95 is threaded inside the circular opening. The lower end of the upper connecting pipe 94 is fixedly installed in the middle of the cylinder cover 95. By rotating the upper connecting pipe 94, the cylinder cover 95 can be removed from the circular opening of the filter cylinder 92, thereby allowing maintenance of the multi-stage filter layer 93.

[0023] The PLC controller 10 is located outside the upper mold 1 and the lower mold 2. The heating mechanism 6, the performance testing mechanism 7 and the exhaust mechanism 8 are all electrically connected to the PLC controller 10.

[0024] The operating principle of the present invention is described as follows: The operator first opens the upper mold 1 and the lower mold 2, and carefully cleans the internal mold cores of the upper mold 1 and the lower mold 2 to completely remove residual raw material debris, oil stains and other impurities, so as to avoid impurities from mixing into the melt and affecting the molding quality. Then, the upper mold 1 is precisely fastened to the lower mold 2. The upper mold 1 and the lower mold 2 are aligned by the sliding cooperation of the guide rod 3 and the guide groove 4. Then the power supply of the entire device is turned on. Once ready, the staff operates the injection nozzle of the injection molding machine to inject the pre-plasticized melt into the cavity formed by the closing of the upper mold 1 and the lower mold 2 through the two sprue 5 of the upper mold 1. The injection nozzle of the injection molding machine is sealed to the sprue 5 through a sealing structure, which can accurately control the injection speed and pressure of the melt to ensure that the melt enters the cavity smoothly. The injection molding machine is electrically connected to the PLC controller 10. During the flow of the melt inside the upper mold 1 and lower mold 2, it converges towards the center along the paths of the two pouring gates 5, and finally merges at the preset welding point. During the molding process, the temperature sensor 75 inside the lower mold 2 near the welding point monitors the melt temperature in real time and transmits the data synchronously to the PLC controller 10. When the temperature of the welding point is detected to be lower than the preset threshold, the PLC controller 10 immediately activates the heating tubes 63 inside the upper mold 1 and lower mold 2. After the heating tubes 63 heat the air in the mounting groove 61, the heat is quickly transferred to the interior of the upper mold 1 and lower mold 2 through the heat-conducting plate 66 with a high thermal conductivity, and then acts on the melt at the welding point. Heating can maintain the molten state of the melt, avoid the decrease in molecular diffusion ability caused by a sudden drop in temperature, promote the full fusion of the melt at the welding point, reduce obvious weld lines caused by insufficient temperature, improve the fluidity of the melt, reduce the "cold material layer" caused by excessive cooling, and create favorable conditions for gas discharge. Meanwhile, the infrared flow rate sensor transmitter 72 of the upper mold 1 and the infrared flow rate sensor receiver 73 of the lower mold 2 are in working condition. The infrared flow rate sensor transmitter 72 continuously emits infrared light to penetrate the melt flowing through the welding area, while the infrared flow rate sensor receiver 73 captures the changes in the intensity and propagation time of the light signal in real time. When the melt flow rate is abnormal (such as too slow flow rate, indicating insufficient melt fluidity, or too fast flow rate, which may cause turbulence and air entrapment), the infrared flow rate sensor receiver 73 feeds the signal back to the PLC controller 10. The PLC controller 10 makes dynamic adjustments based on the flow rate data. If the flow rate is too slow, the power of the heating tube 63 is appropriately increased to enhance the melt fluidity. If the flow rate is too fast, the injection speed of the injection molding machine is finely adjusted.

[0025] In addition, the pressure sensor 76 at the welding point synchronously monitors the changes in the filling pressure of the melt and transmits the pressure signal to the PLC controller 10. When the pressure is lower than the preset value (indicating that the melt is not filled densely and is prone to gas retention), the PLC controller 10 will instruct the injection molding machine to increase the holding pressure and delay the start time of the cooling water circuit to ensure that the melt fully fills the welding point under sufficient pressure. If the pressure is too high (may be due to local overpressure caused by the obstruction of melt flow), the injection pressure of the injection molding machine will be appropriately reduced, and local heat will be removed by a small amount of water flowing through the cooling water circuit to prevent the melt from generating internal stress due to excessive compression. When the melt is injected into the cavity formed by the closing of the upper mold 1 and the lower mold 2, the air entrained during its flow and the gas generated by the volatilization of raw materials will be discharged outward through the pre-set air guide groove 84 and exhaust pipe 81 on the upper mold 1. The one-way throttle valve 82 installed on the exhaust pipe 81 plays a dual role in this process: on the one hand, it ensures the smooth discharge of gas by relying on the one-way conduction characteristic, while strictly blocking the reverse flow of external air into the cavity to avoid secondary pollution. On the other hand, the one-way throttle valve 82 can dynamically adjust the opening degree according to the instructions of the PLC controller 10. When the infrared flow rate sensor receiver 73 detects that the melt flow is insufficient (the flow rate is too slow) or the pressure sensor 76 reports abnormal pressure, the valve opening of the one-way throttle valve 82 will be increased accordingly. By increasing the exhaust volume, space is made for the melt flow, reducing bubbles or pinholes caused by gas retention. In particular, it can prevent the melt from forming turbulence due to excessive impact and entraining more air. During the gas discharge process, the gas first flows through the gas composition sensor 83 (PID photoionization sensor) in the middle section of the exhaust pipe 81. This sensor 83 irradiates the gas under test with ultraviolet light, causing the gas molecules to ionize and generate a weak current. The intensity of this current is directly related to the concentration of volatile organic compounds (such as small molecule compounds produced by raw material decomposition) in the gas, thus achieving accurate detection of the gas composition. The gas composition sensor 83 transmits the detected gas composition signal to the PLC controller 10 in real time. If the concentration of raw material degradation characteristic substances in the gas exceeds a preset range, it indicates that the welded area may be degraded due to localized overheating. The PLC controller 10 will immediately reduce the power of the heating element 63 in the corresponding area. The melt temperature of the injection molding machine is finely adjusted in time to avoid the continuous degradation of the material affecting the product performance. If no abnormal components are detected and only normal air and a small amount of volatiles are present, the current process parameters are kept stable. (This process serves as an auxiliary means of detecting the weld area, with the performance detection mechanism 7 as the main component. However, if the performance detection mechanism 7 malfunctions and cannot accurately detect the temperature of the weld area, the gas composition sensor 83 can detect the melt state of the weld area. Even if the gas composition sensor 83 may have a certain delay, it can still serve as an "emergency backup" for the performance detection mechanism 7. By monitoring the characteristic gases produced by melt degradation, it can indirectly determine the abnormal state of the weld area and provide the last line of protection for the safe operation of the mold.) The gas, after completing component analysis, continues to enter the filter cartridge 92 through the lower connecting pipe 91. It undergoes deep processing through multiple filter layers 93. The outermost layer of the multi-stage filter layers 93 is a sintered metal mesh layer, which uses its rigid structure and uniform pores to intercept tiny molten droplets mixed in the gas (preventing high-temperature droplets from damaging subsequent filter materials). The middle layer is a glass fiber felt layer, whose fluffy fiber structure can capture solid dust in the gas (such as metal fragments from mold wear and incompletely molten raw material particles), purifying the airflow through physical adsorption. The innermost layer is an activated carbon fiber cloth layer, which relies on its rich microporous structure to adsorb volatile organic compounds and odorous substances in the gas, further reducing the environmental impact of gas emissions. The clean gas, after multi-stage filtration, is finally safely discharged through the upper connecting pipe 94, meeting environmental protection requirements while avoiding the impact of pollutants during the exhaust process on the workshop environment or equipment.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An injection mold for interior door panel parts of a new energy vehicle, comprising an upper mold (1) and a lower mold (2), wherein guide rods (3) are fixedly provided at the four bottom corners of the upper mold (1), and guide grooves (4) that cooperate with the guide rods (3) are provided at the four top corners of the lower mold (2), and two pouring gates (5) are provided at the top of the upper mold (1), characterized in that, Also includes; Two heating mechanisms (6) are respectively disposed inside the upper mold (1) and the lower mold (2), and both heating mechanisms (6) are located directly below the center of the two pouring gates (5); The performance testing mechanism (7) is located between the core of the upper mold (1) and the core of the lower mold (2). The performance testing mechanism (7) is used to test the temperature, flow rate and pressure of the melt at the welding part, and the performance testing mechanism (7) is linked with the heating mechanism (6). The exhaust mechanism (8) is located inside the upper mold (1), and the exhaust mechanism (8) is linked with the performance testing mechanism (7); A gas filtration mechanism (9) is provided at the upper end of the exhaust mechanism (8), and the gas filtration mechanism (9) is used to purify the gas discharged from the welding part; The PLC controller (10) is located outside the upper mold (1) and the lower mold (2). The heating mechanism (6), the performance testing mechanism (7) and the exhaust mechanism (8) are all electrically connected to the PLC controller (10).

2. The injection mold for interior door panel parts of a new energy vehicle according to claim 1, characterized in that, The heating mechanism (6) includes a mounting groove (61) provided on the side wall of the upper mold (1). A heating sleeve (62) is provided inside the mounting groove (61). A heating tube (63) is fixedly provided inside the heating sleeve (62). One side of the heating sleeve (62) extends to the outside of the mounting groove (61) and is fixedly provided with a mounting plate (64). Two bolts (65) that are threadedly connected to the side wall of the upper mold (1) are symmetrically provided on the side wall of the mounting plate (64).

3. The injection mold for interior door panel parts of a new energy vehicle according to claim 2, characterized in that, The upper mold (1) has a heat-conducting plate (66) fixedly embedded in the mold core and at the position corresponding to the heating tube (63), and the heat-conducting plate (66) is made of alumina ceramic plate.

4. The injection mold for interior door panel parts of a new energy vehicle according to claim 3, characterized in that, The performance testing mechanism (7) includes a heat insulation sleeve (71) fixedly disposed inside the heat-conducting plate (66) of the upper mold (1) and a heat-conducting plate (66) fixedly disposed inside the lower mold (2). An infrared flow rate sensor transmitter (72) and an infrared flow rate sensor receiver (73) are fixedly disposed inside the two heat insulation sleeves (71). An infrared light-transmitting sheet (74) is fixedly disposed at the opening of each of the two heat insulation sleeves (71). A temperature sensor (75) and a pressure sensor (76) are fixedly embedded on the surface of the heat-conducting plate (66) of the lower mold (2).

5. The injection mold for interior door panel parts of a new energy vehicle according to claim 3, characterized in that, The exhaust mechanism (8) includes an exhaust pipe (81) fixedly disposed inside the upper mold (1). The lower end of the exhaust pipe (81) extends into the mold core of the upper mold (1), and the upper end of the exhaust pipe (81) extends to the top of the upper mold (1) and is fixedly provided with a one-way throttle valve (82). A gas composition sensor (83) is fixedly disposed on the pipe wall of the exhaust pipe (81) and above the one-way throttle valve (82).

6. The injection mold for interior door panel parts of a new energy vehicle according to claim 5, characterized in that, The upper mold (1) has a horizontally opened air guide groove (84) at the position corresponding to the exhaust pipe (81), and the air guide groove (84) passes through the surface of the heat-conducting plate (66) of the upper mold (1).

7. The injection mold for interior door panel parts of a new energy vehicle according to claim 5, characterized in that, The gas filtration mechanism (9) includes a lower connecting pipe (91) threaded onto the upper end of the exhaust pipe (81), a filter cylinder (92) fixedly provided at the upper end of the lower connecting pipe (91), a multi-stage filter layer (93) fixedly provided inside the filter cylinder (92), and an upper connecting pipe (94) detachably provided at the top of the filter cylinder (92).

8. The injection mold for interior door panel parts of a new energy vehicle according to claim 7, characterized in that, The filter cylinder (92) has a circular opening at the top, and a cylinder cover (95) is provided inside the circular opening with internal threads. The lower end of the upper connecting pipe (94) is fixedly located in the middle of the cylinder cover (95).

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