An injection molding die for a terminal cover

Abstract

The present invention relates to the field of injection molding technology, and solves the problems of inaccurate injection speed adjustment and over-reliance on the injection molding machine for the holding pressure function. Specifically, it is a terminal cover injection molding die, which includes a lower die, an upper die is arranged on the upper side, two patch-type pressure sensors are fixed on the outer surface of the upper die, a short-time speed adjustment mechanism and a segmented temperature control mechanism are fixedly installed on the outer surface of the lower die, and a self-holding pressure mechanism is fixedly connected to the short-time speed adjustment mechanism. The present invention monitors the injection progress through the stress change of the patch-type pressure sensor. When injecting to the speed adjustment node, the electronic control closes the type-I solenoid valve, and at the moment of stress change, the slurry is redirected. Since the flow path has a large increase, the speed of the slurry entering the upper die is instantaneously reduced. After the overall injection is completed, the explosion-proof solenoid valve arranged at one end of the connecting pipe is closed, and the air pump pumps air to the lower side of the type-I piston, and the upper slurry is continuously pressed into the die through driving to perform the holding pressure.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding, and specifically to an injection molding die for a terminal cover. Background Art

[0002] The injection molding of the terminal cover is realized by an injection molding machine and a die. The upper and lower dies are clamped and unclamped under the extrusion of an external hydraulic device. After clamping, the injection molding machine injects slurry into the die. After the injection is completed, it is necessary to continue to hold the pressure for a period of time, that is, continuously apply pressure, compact the melt, increase the density, and supply a small amount of slurry to compensate for the cooling shrinkage seam. Due to the large differences in the shape of the terminal cover die and the uneven distribution of the internal space, the injection molding slurry fills from bottom to top through the runner. After passing through the variable cross-section, the injection speed should be adjusted in time to prevent the slurry at the thin-walled part of the die from solidifying before being pressurized, which affects the quality of the finished product.

[0003] Although the existing injection molding machines basically have the ability to adjust the injection speed and adjust the speed in real time by measuring the injected slurry, each type of die needs to be calculated and tested to determine the best node for speed adjustment. However, during injection molding, the die end fails to provide data feedback, does not monitor the injection molding process, and does not adjust the slurry injection speed in time at the die end. Relying solely on the injection molding machine to adjust the speed will inevitably result in errors in the adjustment accuracy during the injection molding of the terminal cover. Moreover, after the injection molding is completed, the injection molding machine needs to hold the pressure, and the connection between the injection molding machine and the die cannot be removed prematurely. The die end cannot hold the pressure by itself, resulting in low working efficiency of the injection molding machine. Therefore, it is necessary to design a new type of injection molding die for the terminal cover. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides an injection molding die for a terminal cover, aiming to enable the die end to have the ability of short-time speed adjustment and self-pressure holding, and solve the problems of inaccurate injection speed adjustment and over-reliance on the injection molding machine for pressure holding.

[0005] To achieve the above object, the present invention provides the following technical solution: An injection molding die for a terminal cover, including a lower die, an upper die is provided on the upper side, two patch-type pressure sensors are fixed on the outer surface of the upper die, a short-time speed adjustment mechanism and a segmented temperature control mechanism are fixedly installed on the outer surface of the lower die, a self-pressure holding mechanism is fixedly connected to the short-time speed adjustment mechanism, the short-time speed adjustment mechanism includes a cylindrical barrel fixed to the bottom of the lower die, a communication pipe and a slurry injection pipe are fixedly penetrated inside the cylindrical barrel, one end of the communication pipe is fixedly connected to one end of the slurry injection pipe, the other end of the communication pipe is fixedly installed with an explosion-proof solenoid valve, and a type-I solenoid valve is fixedly installed inside the communication pipe. One end of the slurry injection pipe extends into the lower die, and a runner adjustment member is fixedly installed inside the cylindrical barrel.

[0006] Preferably, the flow channel adjusting member includes a lower arc-shaped pipe fixed to the outer surface of the connecting pipe. An upper arc-shaped pipe is provided above the lower arc-shaped pipe. One end of the upper arc-shaped pipe is fixed with a curved pipe extending into the interior of the lower arc-shaped pipe. The other end of the upper arc-shaped pipe is fixed with a return pipe extending into the interior of the connecting pipe. One end of the curved pipe is provided with a shunt pipe fixedly penetrating into the interior of the connecting pipe.

[0007] Preferably, the upper arc-shaped pipe is fixed to the inner wall of the cylindrical barrel through a positioning block. The upper arc-shaped pipe and the lower arc-shaped pipe are respectively arranged on the upper and lower sides of the connecting pipe. The return pipe is arranged on one side of the first-type solenoid valve close to the grouting pipe.

[0008] Preferably, a check valve is fixedly installed inside the return pipe. A micro solenoid valve is fixedly installed inside the shunt pipe. A partition plate is provided outside the micro solenoid valve and is fixed to the outer surface of the shunt pipe. The outer surface of the partition plate is fixedly connected to the inner wall of the lower arc-shaped pipe.

[0009] Preferably, the self-pressure maintaining mechanism includes an upper cylinder barrel extending into the interior of the connecting pipe. A lower cylinder barrel is fixed to the bottom of the upper cylinder barrel. A cross plate is fixed to the bottom of the lower cylinder barrel. An air pump is fixedly installed on the top of the cross plate.

[0010] Preferably, an air guiding pipe extending into the interior of the lower cylinder barrel is fixed to the output end of the air pump. A first-type piston is movably installed on the inner wall of the lower cylinder barrel. A connecting rod movably penetrating into the interior of the upper cylinder barrel is fixed to the top of the first-type piston. A second-type piston is fixed to the top of the connecting rod. The outer surface of the second-type piston is movably connected to the inner wall of the upper cylinder barrel.

[0011] Preferably, the segmented temperature control mechanism includes a diversion temperature control member fixed to the bottom of the lower mold. Two groups of symmetrically arranged segmented air outlet members are provided outside the diversion temperature control member.

[0012] Preferably, the diversion temperature control member includes a strip-shaped housing. An air inlet hole is opened on one side of the strip-shaped housing. A blower is fixed to the inner wall of the strip-shaped housing. Two groups of symmetrically arranged electric heating pipes are provided outside the blower. The ends of the electric heating pipes are fixedly connected to the inner wall of the strip-shaped housing.

[0013] Preferably, the segmented air outlet member includes a variable cross-section housing. An air outlet hole is opened on the top of the variable cross-section housing. A partition plate is fixedly installed on the inner wall of the variable cross-section housing. A duct extending into the interior of the strip-shaped housing is fixedly installed inside the variable cross-section housing. One end of the duct extends to one side of the partition plate. An exhaust branch pipe is fixed to the interior of the duct. A second-type solenoid valve is fixedly installed inside the exhaust branch pipe.

[0014] Compared with the prior art, the present invention provides a terminal cover injection molding die, which has the following beneficial effects:

[0015] 1. Through the cooperation between the patch-type pressure sensor and the internal structure of the short-time speed regulation mechanism, the slurry moves upward from the bottom to fill the cavity. When the slurry fills to the variable cross-section position where the patch-type pressure sensor is located, the stress changes, and the electric control closes the type-I solenoid valve. The slurry flows into the lower arc tube and the curved tube through the shunt tube, and enters the upper arc tube under pressure, and then returns to the grouting tube through the return tube to redirect the slurry. Since the flow path has a large increase, the speed of the slurry entering the upper mold is instantaneously reduced. After the injection machine speed is adjusted, the type-I solenoid valve can be turned on to resume the direct flow of the slurry. By performing short-time electric control adjustment at the mold end, the accuracy of speed regulation is improved.

[0016] 2. Through the cooperation between the internal structures of the self-holding pressure mechanism, after the overall injection molding of the mold is completed, the explosion-proof solenoid valve provided at one end of the connecting pipe can be closed, and the connection with the injection molding machine can be removed. There is still some slurry remaining in the flow channels such as the inner cavity of the upper cylinder, the connecting pipe inside the cylindrical barrel, the lower arc tube, and the curved tube, which can be used for cooling and compensating shrinkage of the slurry in the mold. Use an air pump to pump air to the lower side of the type-I piston, drive the connecting rod to drive the type-II piston to move upward, and continuously press the upper slurry into the mold for pressure holding.

[0017] 3. Through the cooperation between the internal structures of the segmented temperature control mechanism, before injection molding, turn on the type-II solenoid valve. After the fan is powered on, it blows air. The air flow is heated after passing through the electric heating tube and enters the air duct. The heat flow gushes out from the two openings at the top of the variable cross-section housing to preheat the mold as a whole. During injection molding, since there are more thin-wall support plate components on one side of the upper mold, the slurry at this local position may cool and solidify before being pressurized. Close the type-II solenoid valve, and only the local position of the support plate component of the upper mold can be heated.

[0018] Monitor the injection molding progress through the stress change of the patch-type pressure sensor. When injecting to the speed regulation node, the electric control closes the type-I solenoid valve. At the moment of stress change, redirect the slurry. Since the flow path has a large increase, the speed of the slurry entering the upper mold is instantaneously reduced. After the overall injection molding is completed, close the explosion-proof solenoid valve provided at one end of the connecting pipe, and use an air pump to pump air to the lower side of the type-I piston. Continuously press the upper slurry into the mold through driving for pressure holding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0020] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0021] Figure 2 is a top view of the present invention;

[0022] Figure 3 Exploded view of the present invention

[0023] Figure 4 Exploded view of the lower mold, upper mold and patch-type pressure sensor of the present invention

[0024] Figure 5 Enlarged schematic view at position A of the present invention

[0025] Figure 6 Stereoscopic schematic view of the short-time speed adjustment mechanism and self-holding pressure mechanism of the present invention

[0026] Figure 7 Stereoscopic schematic view of the self-holding pressure mechanism of the present invention

[0027] Figure 8 Cross-sectional schematic view of the short-time speed adjustment mechanism and self-holding pressure mechanism of the present invention

[0028] Figure 9 Enlarged schematic view at position B of the present invention

[0029] Figure 10 Cross-sectional schematic view of the self-holding pressure mechanism of the present invention

[0030] Figure 11 Stereoscopic schematic view of the segmented temperature control mechanism of the present invention

[0031] Figure 12 Stereoscopic cross-sectional schematic view of the segmented temperature control mechanism of the present invention

[0032] Figure 13 Enlarged schematic view at position C of the present invention

[0033] Figure 14 Stereoscopic cross-sectional schematic view of the segmented air outlet part of the present invention

[0034] In the figure: 1. Lower mold; 2. Upper mold; 3. Patch-type pressure sensor; 4. Short-time speed adjustment mechanism; 41. Cylindrical barrel; 42. Connecting pipe; 43. Grouting pipe; 44. Type-I solenoid valve; 45. Flow channel adjusting part; 451. Lower arc-shaped pipe; 452. Curved pipe; 453. Upper arc-shaped pipe; 454. Shunt pipe; 455. Return pipe; 5. Self-holding pressure mechanism; 51. Upper cylinder barrel; 52. Lower cylinder barrel; 521. Air intake pipe; 522. Type-I piston; 523. Connecting rod; 524. Type-II piston; 53. Air pump; 6. Segmented temperature control mechanism; 61. Drainage temperature control part; 611. Strip-shaped housing; 612. Fan; 613. Electric heating pipe; 62. Segmented air outlet part; 621. Variable cross-section housing; 622. Air guide pipe; 623. Exhaust branch pipe; 624. Type-II solenoid valve. Detailed implementation manners

[0035] The following will elaborate on the implementation mode of the present application in conjunction with the accompanying drawings and embodiments, so as to fully understand how the present application uses technical means to solve technical problems and achieve the implementation process of technical effects and implement accordingly.

[0036] Figures 1-14 As an embodiment of the present invention, a terminal cover injection molding die includes a lower die 1, and an upper die 2 is provided on the upper side. During injection molding, the lower die 1 and the upper die 2 are butted and clamped by using an externally applied hydraulic telescopic rod. Two patch-type pressure sensors 3 are fixed on the outer surface of the upper die 2, and the injection molding progress is monitored through the stress change of the patch-type pressure sensors 3. When injecting to the speed regulation node, the slurry flow rate is electronically controlled and adjusted. A short-time speed regulation mechanism 4 and a segmented temperature control mechanism 6 are fixedly installed on the outer surface of the lower die 1. By setting the segmented temperature control mechanism 6, the die is preheated as a whole and locally reheated to ensure the quality of the slurry cooling and forming in the inner cavity of the thin-wall support plate component part of the upper die 2. The short-time speed regulation mechanism 4 enables the die end to have the ability to short-time adjust the slurry injection speed. After the injection molding machine adjusts the speed, the original flow path of the slurry in the short-time speed regulation mechanism 4 can be restored. A self-holding pressure mechanism 5 is fixedly connected to the short-time speed regulation mechanism 4. By setting the self-holding pressure mechanism 5, self-holding pressure can be carried out at the die end, reducing the working time of the injection molding machine on a single die and improving the working efficiency of the injection molding machine. The short-time speed regulation mechanism 4 includes a cylindrical barrel 41 fixed to the bottom of the lower die 1. A communication pipe 42 and a grouting pipe 43 are fixedly penetrated inside the cylindrical barrel 41. One end of the communication pipe 42 is fixedly connected to one end of the grouting pipe 43. The other end of the communication pipe 42 is fixedly installed with an explosion-proof solenoid valve, and a type-I solenoid valve 44 is fixedly installed inside the communication pipe 42. When the slurry fills to the variable cross-section position where the patch-type pressure sensor 3 is located, the stress changes, and the type-I solenoid valve 44 is electronically controlled to close. One end of the grouting pipe 43 extends into the lower die 1. A flow path adjusting member 45 is fixedly installed inside the cylindrical barrel 41. The slurry turns into the flow path of the flow path adjusting member 45 and still flows into the die through the grouting pipe 43, but instantly increases the slurry flow path, and the grouting speed can be immediately reduced.

[0037] Due to the large differences in the shape of the terminal cover die and the differentiated internal space distribution, the injection molding slurry fills from bottom to top through the flow path. After passing through the variable cross-section, the injection speed should be adjusted in time to prevent the slurry at the thin wall of the die from solidifying without being pressurized, affecting the quality of the finished product. When the injection molding machine adjusts the speed, the speed is adjusted in real time by measuring the injected slurry, and each type of die needs to be calculated and tested multiple times to determine the best node for speed adjustment. However, during injection molding, the die end fails to provide data feedback and does not monitor the injection molding process, so it is inevitable that there are errors in the adjustment accuracy. Therefore, patch-type pressure sensors 3 are set, and the injection molding process can be reflected through stress changes, and the flow path is adjusted by the short-time speed regulation mechanism 4 to reduce the short-time grouting speed, and the self-holding pressure mechanism 5 can be used to achieve self-holding pressure at the die end.

[0038] The runner adjusting member 45 includes a lower arc-shaped pipe 451 fixed to the outer surface of the communicating pipe 42. An upper arc-shaped pipe 453 is provided on the upper side of the lower arc-shaped pipe 451. When the grouting speed is reduced, the first-type solenoid valve 44 is closed. One end of the upper arc-shaped pipe 453 is fixed with a curved pipe 452 extending into the interior of the lower arc-shaped pipe 451, and the other end of the upper arc-shaped pipe 453 is fixed with a return pipe 455 extending into the interior of the communicating pipe 42. One end of the curved pipe 452 is provided with a shunt pipe 454 fixedly penetrating into the interior of the communicating pipe 42. The slurry is transferred into the lower arc-shaped pipe 451 through the shunt pipe 454, enters the upper arc-shaped pipe 453 from the curved pipe 452, and finally flows back into the grouting pipe 43 through the return pipe 455, increasing the slurry flow path and instantaneously reducing the grouting speed. The upper arc-shaped pipe 453 is fixed to the inner wall of the cylindrical barrel 41 through a positioning block. The upper arc-shaped pipe 453 and the lower arc-shaped pipe 451 are respectively arranged on the upper and lower sides of the communicating pipe 42. The return pipe 455 is arranged on the side of the first-type solenoid valve 44 close to the grouting pipe 43. A one-way valve is fixedly installed inside the return pipe 455, and a micro solenoid valve is fixedly installed inside the shunt pipe 454. When the speed is reduced, it is necessary to open the micro solenoid valve inside the shunt pipe 454 to ensure the pipeline passage. A partition plate is fixed to the outer surface of the shunt pipe 454 outside the micro solenoid valve, and the outer surface of the partition plate is fixedly connected to the inner wall of the lower arc-shaped pipe 451. By setting the partition plate, the micro solenoid valve installed in the shunt pipe 454 is protected to isolate the injection slurry. After the speed of the injection machine is adjusted, the first-type solenoid valve 44 can be switched on, and the micro solenoid valve inside the shunt pipe 454 can be closed to restore the direct flow of the slurry. By performing short-term electric control adjustment at the mold end, the sensitivity and accuracy of speed adjustment are improved.

[0039] The self-holding pressure mechanism 5 includes an upper cylinder barrel 51 extending into the interior of the communicating pipe 42. After the overall injection molding of the mold is completed, the explosion-proof solenoid valve provided at one end of the communicating pipe 42 can be closed, and the connection with the injection molding machine can be removed. There is still some slurry remaining in the flow paths such as the inner cavity of the upper cylinder barrel 51, the communicating pipe 42 inside the cylindrical barrel 41, the lower arc-shaped pipe 451, and the curved pipe 452, which can be used for cooling and compensating the shrinkage of the slurry in the mold. The bottom of the upper cylinder barrel 51 is fixed with a lower cylinder barrel 52, the bottom of the lower cylinder barrel 52 is fixed with a cross plate, and an air pump 53 is fixedly installed on the top of the cross plate. The output end of the air pump 53 is fixed with an air inlet pipe 521 extending into the interior of the lower cylinder barrel 52. A first-type piston 522 is movably installed on the inner wall of the lower cylinder barrel 52. When the power supply of the air pump 53 is connected, air is pumped to the lower side of the first-type piston 522 through the air inlet pipe 521. A connecting rod 523 is fixedly installed on the top of the first-type piston 522 and movably penetrates into the interior of the upper cylinder barrel 51. Under the action of air pressure, the first-type piston 522 pushes the connecting rod 523 to move upward. The top of the connecting rod 523 is fixed with a second-type piston 524, and the outer surface of the second-type piston 524 is movably connected to the inner wall of the upper cylinder barrel 51. The second-type piston 524 is pushed to move upward by the connecting rod 523, pushing the upper slurry to move, and compensating for the shrinkage during the process of cooling and forming the slurry in the lower mold 1 and the upper mold 2, ensuring the quality of the terminal cover finished product.

[0040] The segmented temperature control mechanism 6 includes a drainage temperature control member 61 fixed to the bottom of the lower mold 1. On the outside of the drainage temperature control member 61, there are two groups of symmetrically arranged segmented air outlet members 62. The drainage temperature control member 61 includes a strip-shaped housing 611. An air inlet hole is opened on one side of the strip-shaped housing 611. A fan 612 is fixed on the inner wall of the strip-shaped housing 611. After the fan 612 is powered on, it blows air. The outside air flows through the air inlet hole into the strip-shaped housing 611. There are two groups of symmetrically arranged electric heating tubes 613 outside the fan 612. After the two groups of electric heating tubes 613 are powered on, they heat the air flow. The heated air flow can be used to heat the mold. The ends of the electric heating tubes 613 are fixedly connected to the inner wall of the strip-shaped housing 611. The segmented air outlet member 62 includes a variable cross-section housing 621. An air outlet hole is opened at the top of the variable cross-section housing 621. A partition is fixedly installed on the inner wall of the variable cross-section housing 621. And a duct 622 extending into the strip-shaped housing 611 is fixedly installed inside the variable cross-section housing 621. The hot air flow enters the variable cross-section housing 621 through the duct 622. One end of the duct 622 extends to one side of the partition. And an exhaust branch pipe 623 is fixed inside the duct 622. A type-II solenoid valve 624 is fixedly installed inside the exhaust branch pipe 623. Before injection molding, the type-II solenoid valve 624 is opened, and the hot air flows out from the two parts of the opening at the top of the variable cross-section housing 621 to preheat the mold as a whole. During injection molding, since there are more thin-wall support plate members on one side of the upper mold 2, the slurry at this local position may cool and solidify before being pressurized, which affects the density. By closing the type-II solenoid valve 624, only the local position of the support plate member of the upper mold 2 can be heated to ensure the quality of the terminal cover after molding.

[0041] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0042] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A terminal cover injection molding die, comprising a lower die (1), an upper die (2) is arranged on the upper side of the lower die (1), and two patch type pressure sensors (3) are fixed on the outer surface of the upper die (2), characterized in that: A short-time speed regulating mechanism (4) and a segmented temperature control mechanism (6) are fixedly installed on the outer surface of the lower mold (1), and a self-holding pressure mechanism (5) is fixedly connected to the short-time speed regulating mechanism (4); The short-time speed regulating mechanism (4) includes a cylindrical barrel (41) fixed to the bottom of the lower mold (1). A communicating pipe (42) and a grouting pipe (43) are fixedly penetrated inside the cylindrical barrel (41). One end of the communicating pipe (42) is fixedly connected to one end of the grouting pipe (43). An explosion-proof solenoid valve is fixedly installed at the other end of the communicating pipe (42), and a type-I solenoid valve (44) is fixedly installed inside the communicating pipe (42). One end of the grouting pipe (43) extends into the lower mold (1), and a flow channel adjusting member (45) is fixedly installed inside the cylindrical barrel (41); The flow channel adjusting member (45) includes a lower arc-shaped pipe (451) fixed to the outer surface of the communicating pipe (42). An upper arc-shaped pipe (453) is arranged above the lower arc-shaped pipe (451). One end of the upper arc-shaped pipe (453) is fixed with a curved pipe (452) extending into the lower arc-shaped pipe (451). The other end of the upper arc-shaped pipe (453) is fixed with a return pipe (455) extending into the communicating pipe (42). One end of the lower arc-shaped pipe (451) is provided with a shunt pipe (454) fixedly penetrated into the communicating pipe (42); The upper arc-shaped pipe (453) is fixed to the inner wall of the cylindrical barrel (41) through a positioning block. The upper arc-shaped pipe (453) and the lower arc-shaped pipe (451) are respectively arranged on the upper and lower sides of the communicating pipe (42). The return pipe (455) is arranged on the side of the type-I solenoid valve (44) close to the grouting pipe (43); A one-way valve is fixedly installed inside the return pipe (455). A micro solenoid valve is fixedly installed inside the shunt pipe (454). A partition plate is arranged outside the micro solenoid valve and is fixedly connected to the inner wall of the lower arc-shaped pipe (451) on the outer surface of the partition plate; 2. The terminal cover injection molding die according to claim 1, characterized in that: The self-holding pressure mechanism (5) includes an upper cylinder barrel (51) extending into the communicating pipe (42). A lower cylinder barrel (52) is fixed to the bottom of the upper cylinder barrel (51). A cross plate is fixed to the bottom of the lower cylinder barrel (52), and an air pump (53) is fixedly installed on the top of the cross plate; 3. The terminal cover injection molding die according to claim 2, characterized in that: The output end of the air pump (53) is fixed with an air guiding pipe (521) extending into the lower cylinder barrel (52). A first piston (522) is movably installed on the inner wall of the lower cylinder barrel (52). A connecting rod (523) is fixed to the top of the first piston (522) and movably penetrates into the upper cylinder barrel (51). A second piston (524) is fixed to the top of the connecting rod (523), and the outer surface of the second piston (524) is movably connected to the inner wall of the upper cylinder barrel (51); 4. The terminal cover injection molding die according to claim 1, characterized in that: The segmented temperature control mechanism (6) includes a flow guiding and temperature control member (61) fixed to the bottom of the lower mold (1). Two groups of segmented air outlet members (62) are symmetrically arranged outside the flow guiding and temperature control member (61).

5. The terminal cover injection molding die according to claim 4, characterized in that: The drainage and temperature control component (61) includes a strip-shaped housing (611). An air inlet hole is formed on one side of the strip-shaped housing (611). A fan (612) is fixed on the inner wall of the strip-shaped housing (611). Two groups of symmetrically arranged electric heating tubes (613) are arranged outside the fan (612). The end of the electric heating tube (613) is fixedly connected to the inner wall of the strip-shaped housing (611).

6. The terminal cover injection molding die according to claim 4, characterized in that: The segmented air outlet component (62) includes a variable cross-section housing (621). An air outlet hole is formed at the top of the variable cross-section housing (621). A partition is fixedly installed on the inner wall of the variable cross-section housing (621). And a duct (622) extending into the strip-shaped housing (611) is fixedly installed inside the variable cross-section housing (621). One end of the duct (622) extends to one side of the partition. And an exhaust branch pipe (623) is fixed inside the duct (622). A type-II solenoid valve (624) is fixedly installed inside the exhaust branch pipe (623).

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