Outdoor battery pack shell mold with special slider structure shortening two-color rotary table machine injection molding production cycle

Abstract

The application relates to the technical field of injection molds, in particular to an outdoor battery pack shell mold capable of shortening the injection production cycle of a double-color rotary disc machine and provided with a special slider structure, which comprises a fixed mold assembly, a movable mold assembly and a slider assembly. The fixed mold assembly comprises a first injection fixed mold unit and a second injection fixed mold unit. The movable mold assembly comprises a movable mold unit, and the position of the movable mold unit is set corresponding to the first injection fixed mold unit and the second injection fixed mold unit. The slider assembly comprises a butt joint slider, a spring needle mechanism, a clamping mechanism one and a clamping mechanism two. The butt joint slider is symmetrically arranged on the two sides of the movable mold unit. The spring needle mechanism can only limit the movement of the clamping mechanism two but cannot limit the movement of the clamping mechanism one. The first injection fixed mold unit is provided with the clamping mechanism one, and the second injection fixed mold unit is provided with the clamping mechanism two. Through the cooperation of the spring needle mechanism and the clamping mechanism one and the clamping mechanism two, the time for process switching is reduced, and the production cycle of a single part is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, specifically to an outdoor battery pack shell mold with a special slider structure that shortens the injection molding production cycle of a two-color rotary machine. Background Technology

[0002] With the development of outdoor energy storage devices, battery pack casings often employ two-color injection molding processes, such as combining rigid plastics (e.g., PC+ABS) with soft elastomers (e.g., TPE), to meet the dual requirements of structural strength, sealing, and shock absorption. Two-color rotary injection molding machines are commonly used equipment for producing such products.

[0003] In existing technologies, a complete two-color injection molding cycle includes the following steps: first injection to form a semi-finished product, mold opening, rotary table rotation to exchange the position of the moving mold, second injection to form the finished product, and mold opening and ejection of the finished product. During this process, after the moving mold carrying the first injection semi-finished product opens, its slider usually needs to open to make way for the second injection or for demolding after the rotary table rotates. However, because the semi-finished product (especially the protruding structure of the hard plastic sidewalls) has not fully cooled and solidified when the mold opens, opening the slider too early can cause partial deformation, tearing, or even detachment of the semi-finished product. Therefore, traditional processes often require extended cooling time or a period of rest after mold opening, which significantly prolongs the duration of a single production cycle and reduces production efficiency. This is especially true for thin-walled products with complex sidewall structures, such as outdoor battery pack casings, where premature slider opening results in a higher product defect rate, forcing manufacturers to adopt conservative process parameters and further sacrifice production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide an outdoor battery pack shell mold with a special slider structure that shortens the injection molding production cycle of a two-color rotary machine, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An outdoor battery pack casing mold with a special slider structure to shorten the injection molding production cycle of a two-color rotary machine includes: A mold assembly, comprising a first-shot mold unit and a second-shot mold unit; A moving mold assembly, the moving mold assembly including moving mold units, two moving mold units are provided, the positions of the two moving mold units are set corresponding to the first injection fixed mold unit and the second injection fixed mold unit; The slider assembly includes a docking slider, a spring pin mechanism, a first locking mechanism, and a second locking mechanism. The docking sliders are symmetrically arranged on both sides of the moving mold unit. The spring pin mechanism is disposed on the docking slider. The spring pin mechanism can only restrict the movement of the second locking mechanism but cannot restrict the movement of the first locking mechanism. The first injection mold unit is provided with the first locking mechanism, and the second injection mold unit is provided with the second locking mechanism. When the first injection mold unit and the moving mold unit separate, the spring pin mechanism will release the restriction on the first locking mechanism, and the docking slider will remain closed. When the second injection mold unit and the moving mold unit separate, the spring pin mechanism will restrict the movement of the second locking mechanism, and the second locking mechanism will drive the two docking sliders away from each other.

[0006] Preferably, the docking slider is slidably connected to the moving mold unit, the docking slider has a limiting groove, and the spring pin mechanism is symmetrically arranged on both sides of the limiting groove.

[0007] Preferably, the spring mechanism includes a mounting bolt, a limiting spring, and a limiting spring pin. The mounting bolt is installed in the mounting groove of the docking slider. The limiting spring is connected to one side of the mounting bolt, and the limiting spring pin is connected to the other end of the limiting spring. The limiting spring pins are symmetrically arranged on both sides of the limiting groove, and the side of the limiting spring pin closest to the limiting groove has a hemispherical structure.

[0008] Preferably, the locking mechanism is symmetrically arranged on both sides of the injection molding unit. The locking mechanism includes a shovel and a circular inclined guide post. The shovel is disposed in the injection molding unit. The contact surface between the shovel and the docking slider is an inclined surface. The shovel is used to lock the docking slider when the mold is closed to prevent the docking slider from being pushed open by the injection pressure. The shovel is connected to the circular inclined guide post. When the moving mold unit and the fixed mold unit are separated, the circular inclined guide post will push the limiting pin to retract along the mounting groove. After that, the circular inclined guide post will move out along the limiting groove, and the position of the docking slider will not change.

[0009] Preferably, the second locking mechanism is symmetrically arranged on both sides of the two-shot fixed mold unit. The second locking mechanism includes a second shovel and a triangular inclined guide post. The second shovel is arranged in the two-shot fixed mold unit. The contact surface between the second shovel and the docking slider is also an inclined surface. The second shovel is used to lock the docking slider when the mold is closed to prevent the docking slider from being pushed open by the injection pressure. The second shovel is connected to the triangular inclined guide post. When the moving mold unit and the two-shot fixed mold unit are separated from each other, the limiting pin will restrict the movement of the triangular inclined guide post. At this time, the triangular inclined guide posts arranged on both sides will pull the docking sliders on both sides away from each other.

[0010] Preferably, the slider assembly further includes a mechanical protection structure, which is disposed in the moving mold unit. The mechanical protection structure is used to ensure that the ejection mechanism can only work when the docking slider is open, so as to prevent the docking slider from being damaged by the ejection mechanism.

[0011] Preferably, the first-shot fixed mold unit is used to mold PC+ABS rigid plastic, and the second-shot fixed mold unit is used to mold TPE soft plastic; the two moving mold units interchange positions by rotating the turntable of the two-color rotary injection molding machine, thereby alternately docking with the first-shot fixed mold unit and the second-shot fixed mold unit.

[0012] Preferably, both the first-shot mold unit and the second-shot mold unit are equipped with a hot runner system, which is used to keep the injection material in a molten state in the mold.

[0013] Preferably, both the first-shot fixed mold unit and the second-shot fixed mold unit are provided with a fixed mold cooling system, which is used to cool the first-shot fixed mold unit and the second-shot fixed mold unit. The moving mold unit is provided with a moving mold cooling system, which is used to cool the moving mold unit.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting the spring pin mechanism in cooperation with the first and second locking mechanisms, the docking slider remains closed when the moving mold unit separates from the first injection fixed mold unit, thereby forming a wrapping and support for the semi-finished product after the first injection molding, reducing the time for process switching and significantly reducing the production cycle of a single part. The docking slider remains closed after the first injection mold opens, avoiding defects such as deformation, tearing, and detachment of the semi-finished product caused by the slider opening too early. It is especially suitable for thin-walled, deep-cavity products with lateral structures, such as outdoor battery pack shells. Attached Figure Description

[0015] Figure 1 This is a connection diagram of the first-shot fixed mold unit, the second-shot fixed mold unit, and the moving mold of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the moving model of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the three-dimensional structure of the moving model of the present invention. Figure 2 ; Figure 4 This is a schematic diagram showing the position structure of the docking slider, limiting groove, and limiting spring pin of the present invention; Figure 5 This is a schematic diagram of the internal structure of the docking slider of the present invention (the docking slider is rendered in perspective). Figure 6 This is a schematic diagram showing the positions of the docking slider and the moving mold cooling system of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the injection molding unit of the present invention; Figure 8 This is a schematic diagram of the structure of each component of the hot runner system of the present invention; Figure 9 This is a schematic diagram showing the locations of the hot runner system and the mold cooling system of the present invention; Figure 10 This is a schematic diagram of the three-dimensional structure of the two-shot fixed-mode unit of the present invention.

[0016] In the diagram: 1. First-shot fixed mold unit, 2. Second-shot fixed mold unit, 3. Moving mold unit, 4. Connecting slider, 5. Limiting groove, 6. Mounting bolt, 7. Limiting spring, 8. Limiting spring pin, 9. Scraper 1, 10. Circular inclined guide post, 11. Scraper 2, 12. Triangular inclined guide post, 13. Mechanical protection structure, 15. Fixed mold cooling system, 16. Moving mold cooling system, 100. Ejector plate, 200. Counter, 1401. Positioning ring, 1402. Diverter plate, 1403. Solenoid valve, 1404. Junction box, 1405. Cylinder, 1406. Hot nozzle. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-10 The present invention provides a technical solution: An outdoor battery pack casing mold with a special slider structure to shorten the injection molding production cycle of a two-color rotary machine, as shown in the instruction manual. Figure 1 As shown, the fixed mold assembly includes a first-shot fixed mold unit and a second-shot fixed mold unit. The first-shot fixed mold unit 1 is used to mold a PC+ABS rigid plastic skeleton, and the second-shot fixed mold unit 2 is used to mold a TPE soft plastic sealing layer. The first-shot fixed mold unit 1 is also provided with a tunnel core-pulling inclined guide post, which is used to drive the tunnel core-pulling. The first-shot fixed mold unit 1 and the second-shot fixed mold unit 2 are respectively provided with different molding modules (for injection molding).

[0019] The moving mold assembly includes two moving mold units 3. The positions of the two moving mold units 3 correspond to the first-shot fixed mold unit 1 and the second-shot fixed mold unit 2. The two moving mold units 3 have identical structures and their positions are interchanged by rotating the turntable of the two-color rotary injection molding machine, thereby alternately docking with the first-shot fixed mold unit 1 and the second-shot fixed mold unit 2. There is no need to wait for the semi-finished product to cool completely before the turntable can be directly exchanged, which greatly shortens the production cycle. The moving mold unit 3 is equipped with an ejection mechanism and a counter 200. The counter 200 is used to record the number of times the mold is closed, which is convenient for production statistics.

[0020] The slider assembly includes docking sliders 4, spring pin mechanisms, locking mechanism one, and locking mechanism two. The docking sliders 4 are symmetrically arranged on both sides of the moving mold unit 3. Each docking slider 4 is slidably connected to the guide rail of the moving mold unit 3 and can reciprocate along a direction perpendicular to the mold opening and closing direction. The spring pin mechanism is located on the docking sliders 4. The spring pin mechanism can only restrict the movement of locking mechanism two but cannot restrict the movement of locking mechanism one. Locking mechanism one is provided in the first-shot fixed mold unit 1, and locking mechanism two is provided in the second-shot fixed mold unit 2. When the first-shot fixed mold unit 1 and the moving mold unit 3 separate, the spring pin mechanism releases the restriction on locking mechanism one, at which point the docking sliders 4 remain closed. When the second-shot fixed mold unit 2 and the moving mold unit 3 separate, the spring pin mechanism restricts the movement of locking mechanism two, at which point locking mechanism two will cause the two docking sliders 4 to move away from each other.

[0021] In this embodiment, the docking slider 4 is slidably connected to the moving mold unit 3. The docking slider 4 has a limiting groove 5. The spring pin mechanism is symmetrically arranged on both sides of the limiting groove 5. The limiting groove 5 is arranged through the mold opening direction.

[0022] The spring mechanism includes a mounting bolt 6, a limiting spring 7, and a limiting spring pin 8. The mounting bolt 6 is installed in the mounting groove of the docking slider 4. One side of the mounting bolt 6 is connected to the limiting spring 7, and the other end of the limiting spring 7 is connected to the limiting spring pin 8. The mounting bolt 6 is threaded into the mounting groove to adjust the preload of the limiting spring 7. The limiting spring 7 is a helical compression spring, and its elastic force keeps the limiting spring pin 8 in an extended state without external force. The limiting spring pins 8 are symmetrically arranged on both sides of the limiting groove 5. The side of the limiting spring pin 8 closest to the limiting groove 5 has a hemispherical structure. The hemispherical structure facilitates the smooth pushing of the limiting spring pin 8 to both sides when the circular inclined guide post 10 enters the limiting groove 5.

[0023] A locking mechanism is symmetrically arranged on both sides of the injection molding unit 1. The locking mechanism includes a shovel 9 and a circular inclined guide post 10. The shovel 9 is located in the injection molding unit 1, and the contact surface between the shovel 9 and the docking slider 4 is an inclined surface. The shovel 9 is used to lock the docking slider 4 when the mold is closed, preventing the docking slider 4 from being pushed open by the injection pressure. Specifically, in the mold-closed state, the inclined surface of the shovel 9 fits against the inclined surface at the rear of the docking slider 4, generating a locking force perpendicular to the sliding direction. The shovel 9 is connected to a circular inclined guide post 10. When the moving mold unit 3 and the first injection fixed mold unit 1 separate, the circular inclined guide post 10 will push the limiting spring pin 8 to retract along the mounting groove. After that, the circular inclined guide post 10 will move out along the limiting groove 5. The position of the docking slider 4 does not change. Since the cross section of the circular inclined guide post 10 is circular, the radial component force it generates on the hemispherical end of the limiting spring pin 8 during the movement is small. In addition, the limiting spring pin 8 is compressed and retracted into the mounting groove. Therefore, the circular inclined guide post 10 will not cause the docking slider 4 to move laterally. The docking slider 4 remains in the closed state, thereby forming a wrapping support for the semi-finished product after the first injection molding. It can enter the turntable exchange process without cooling and waiting.

[0024] The second locking mechanism is symmetrically arranged on both sides of the two-shot fixed mold unit 2. The second locking mechanism includes a second shovel 11 and a triangular inclined guide post 12. The second shovel 11 is located in the two-shot fixed mold unit 2. The contact surface between the second shovel 11 and the docking slider 4 is also an inclined surface. The second shovel 11 is used to lock the docking slider 4 when the mold is closed to prevent the docking slider 4 from being pushed open by the injection pressure. The structure of the second shovel 11 is symmetrical with the first shovel 9, and its locking principle is the same. The second shovel 11 is connected to the triangular inclined guide post 12. When the moving mold unit 3 and the two-shot fixed mold unit 2 are separated, the limiting pin 8 will restrict the movement of the triangular inclined guide post 12. At this time, the triangular inclined guide posts 12 on both sides will pull the docking sliders 4 on both sides away from each other, as shown in the instruction manual. Figure 10 As shown, the cross-section of the triangular inclined guide post 12 is triangular with inclined surfaces on both sides. During the mold opening process, the limiting spring pin 8 cannot be completely compressed into the mounting groove by the triangular inclined guide post 12, but instead abuts against one side of the triangular inclined guide post 12, thereby transmitting the horizontal component of the mold opening movement to the docking slider 4, forcing the docking slider 4 to slide outward and open, releasing the undercut or side structure on the finished product, which is convenient for subsequent ejection and demolding.

[0025] The slider assembly also includes a mechanical protection structure 13, which is located in the moving mold unit 3. The mechanical protection structure 13 is used to protect the ejection mechanism. (See attached instruction manual.) Figure 2 Included with instruction manual Figure 3The ejection mechanism is not shown in the diagram. Here, the ejector plate 100 (used to fix ejector pins, which eject the molded parts to complete demolding) is used to refer to the ejection mechanism. It should be noted that this mechanism only operates when the docking slider 4 is open to prevent damage to the docking slider 4 from the ejection mechanism. In this embodiment, the mechanical protection structure 13 includes a mechanical stop or limit switch linked to the docking slider 4. When the docking slider 4 is in the closed state, the mechanical stop extends into the movement path of the ejector plate, physically blocking the ejector plate from moving forward. When the docking slider 4 is in the open state, the mechanical stop moves out of the movement path with the slider, allowing the ejector plate to advance and perform the ejection action, thus completely preventing accidental ejection that could damage the slider.

[0026] Both the first-shot mold unit 1 and the second-shot mold unit 2 are equipped with hot runner systems. These systems ensure that the molten plastic maintains a constant temperature and fluidity before being injected into the mold cavity, reducing cold material and improving molding quality. The molten plastic enters the manifold 1402 from the injection nozzle via the positioning ring 1401. Heating elements within the manifold 1402 maintain the material at a set temperature and ensure uniformity through a temperature control device. Each hot nozzle 1406 corresponds to a gate point in the mold cavity. Cylinders 1405 drive valve needles to open or close the gate according to the injection sequence. Solenoid valves 1403 and junction boxes 1404 precisely control the air path and heating signals (see instruction manual attached). Figure 8 Included with instruction manual Figure 9 (The connection lines between solenoid valve 1403 and junction box 1404 are not shown). The hot runner of the first-shot mold unit 1 is used for injecting PC+ABS material, and the hot runner of the second-shot mold unit 2 is used for injecting TPE material. Both are independently controlled and do not interfere with each other, thus ensuring that the temperature and flowability of both materials are at their optimal levels during the two-color injection molding process (see attached manual). Figure 8 Included with instruction manual Figure 9 Only one hot runner system is shown as an example in the image (this is hereby noted).

[0027] Both the first-shot fixed mold unit 1 and the second-shot fixed mold unit 2 are equipped with a fixed mold cooling system 15, which is used to cool the first-shot fixed mold unit 1 and the second-shot fixed mold unit 2. The moving mold unit 3 is equipped with a moving mold cooling system 16, which is used to cool the moving mold unit 3. The fixed mold cooling system 15 and the moving mold cooling system 16 respectively include components such as a straight water passage, water well, water nozzle, rubber ring, water stop plug, and throat plug arranged inside the mold core (this is conventional technology disclosed here and will not be described in detail. For details, please refer to the prior art with authorization announcement number "CN 223001038 U"), forming a circulating cooling loop. In addition, the docking slider 4 also integrates a slider cooling system, which is connected to the moving mold cooling system 16 through a hose, so that the molding part is cooled synchronously when the slider is closed, further shortening the cooling time.

[0028] Working principle: First, the turntable (not shown in the attached diagram of the instruction manual) delivers the empty moving mold unit 3 to the first injection station to close with the first injection fixed mold unit 1, injecting PC+ABS material to form a semi-finished product; then the mold opens, and at the first injection station, the circular inclined guide post 10 moves along the limiting groove 5 and compresses the limiting spring pin 8 to retract, while the docking slider 4 remains closed, and the semi-finished product is stably wrapped; then the turntable rotates 180°, the moving mold unit 3 carrying the semi-finished product is moved to the second injection station, and the empty moving mold unit 3 is moved to the first injection station; the second injection station closes the mold and injects TP. Material E is used to form a soft rubber layer on the surface of the semi-finished product to form the finished product. Then, the mold is opened again. At the second injection station, the triangular inclined guide post 12 is blocked by the limiting spring pin 8, which pulls the docking slider 4 to open outward, and the undercut on the finished product is released. Then, the mechanical protection structure 13 detects that the slider has opened and allows the ejection mechanism to operate, ejecting the finished product. The empty mold unit 3 is switched to the first injection station again. When the mold is closed, the shovel 9 pushes the docking slider 4 to close and reset, and enters the next production cycle. This cycle is repeated to achieve continuous production without additional cooling waiting in a single cycle.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An outdoor battery pack shell mold with a special slider structure to shorten the injection molding production cycle of a two-color rotary machine, characterized in that, include: A mold assembly, comprising a first-shot mold unit and a second-shot mold unit; A moving mold assembly, the moving mold assembly including moving mold units, two moving mold units are provided, the positions of the two moving mold units are set corresponding to the first injection fixed mold unit and the second injection fixed mold unit; The slider assembly includes a docking slider, a spring pin mechanism, a first locking mechanism, and a second locking mechanism. The docking sliders are symmetrically arranged on both sides of the moving mold unit. The spring pin mechanism is disposed on the docking slider. The spring pin mechanism can only restrict the movement of the second locking mechanism but cannot restrict the movement of the first locking mechanism. The first injection mold unit is provided with the first locking mechanism, and the second injection mold unit is provided with the second locking mechanism. When the first injection mold unit and the moving mold unit separate, the spring pin mechanism will release the restriction on the first locking mechanism, and the docking slider will remain closed. When the second injection mold unit and the moving mold unit separate, the spring pin mechanism will restrict the movement of the second locking mechanism, and the second locking mechanism will drive the two docking sliders away from each other.

2. The outdoor battery pack shell mold with a special slider structure to shorten the injection molding production cycle of a two-color rotary machine according to claim 1, characterized in that: The docking slider is slidably connected to the moving mold unit, and the docking slider has a limit groove. The spring pin mechanism is symmetrically arranged on both sides of the limit groove.

3. The outdoor battery pack shell mold with a special slider structure to shorten the injection molding production cycle of a two-color rotary machine according to claim 2, characterized in that: The spring pin mechanism includes a mounting bolt, a limiting spring, and a limiting spring pin. The mounting bolt is installed in the mounting groove of the docking slider. The limiting spring is connected to one side of the mounting bolt, and the limiting spring pin is connected to the other end of the limiting spring. The limiting spring pins are symmetrically arranged on both sides of the limiting groove, and the side of the limiting spring pin closest to the limiting groove has a hemispherical structure.

4. The outdoor battery pack shell mold with a special slider structure to shorten the injection molding production cycle of a two-color rotary machine according to claim 3, characterized in that: The locking mechanism is symmetrically arranged on both sides of the injection molding unit. The locking mechanism includes a shovel and a circular inclined guide post. The shovel is disposed in the injection molding unit. The contact surface between the shovel and the docking slider is an inclined surface. The shovel is used to lock the docking slider when the mold is closed to prevent the docking slider from being pushed open by the injection pressure. The shovel is connected to the circular inclined guide post. When the moving mold unit and the fixed mold unit are separated, the circular inclined guide post will push the limiting pin to retract along the mounting groove. After that, the circular inclined guide post will move out along the limiting groove, and the position of the docking slider will not change.

5. The outdoor battery pack shell mold with a special slider structure to shorten the injection molding production cycle of a two-color rotary machine according to claim 3, characterized in that: The second locking mechanism is symmetrically arranged on both sides of the two-shot fixed mold unit. The second locking mechanism includes a second shovel and a triangular inclined guide post. The second shovel is arranged in the two-shot fixed mold unit. The contact surface between the second shovel and the docking slider is also an inclined surface. The second shovel is used to lock the docking slider when the mold is closed to prevent the docking slider from being pushed open by the injection pressure. The second shovel is connected to the triangular inclined guide post. When the moving mold unit and the two-shot fixed mold unit are separated, the limiting pin will restrict the movement of the triangular inclined guide post. At this time, the triangular inclined guide posts arranged on both sides will pull the docking sliders on both sides away from each other.

6. The outdoor battery pack shell mold with a special slider structure to shorten the injection molding production cycle of a two-color rotary machine according to claim 1, characterized in that: The slider assembly also includes a mechanical protection structure, which is located in the moving mold unit. The mechanical protection structure is used to ensure that the ejection mechanism can only work when the docking slider is open, so as to prevent the docking slider from being damaged by the ejection mechanism.

7. The outdoor battery pack shell mold with a special slider structure to shorten the injection molding production cycle of a two-color rotary machine according to claim 1, characterized in that: The first-shot fixed mold unit is used to mold PC+ABS rigid plastic, and the second-shot fixed mold unit is used to mold TPE soft plastic; the two moving mold units interchange positions by rotating the turntable of the two-color rotary injection molding machine, thereby alternately docking with the first-shot fixed mold unit and the second-shot fixed mold unit.

8. The outdoor battery pack shell mold with a special slider structure to shorten the injection molding production cycle of a two-color rotary machine according to claim 1, characterized in that: Both the first-shot mold unit and the second-shot mold unit are equipped with a hot runner system, which is used to keep the injection material in a molten state in the mold.

9. The outdoor battery pack shell mold with a special slider structure to shorten the injection molding production cycle of a two-color rotary machine according to claim 1, characterized in that: Both the first-shot fixed mold unit and the second-shot fixed mold unit are equipped with a fixed mold cooling system, which is used to cool the first-shot fixed mold unit and the second-shot fixed mold unit. The moving mold unit is equipped with a moving mold cooling system, which is used to cool the moving mold unit.

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