Injection molding device for processing automobile glass sealing strip

Abstract

The invention relates to the technical field of automobile sealing strip injection molding, in particular to an injection molding device for automobile glass sealing strip machining, which comprises an injection molding device body, the injection molding device body comprises an injection molding machine table, an injection molding mechanism is arranged at the injection molding machine table, and the injection molding mechanism comprises a lower mold and an upper mold. Cooling mechanism mounting cavities are formed in the upper mold and the lower mold; cooling mechanisms for cooling a cavity of the upper mold and a cavity of the lower mold are arranged in the cooling mechanism mounting cavities; a water circulation mechanism used for driving cooling liquid in the cooling box to flow and a cooling mechanism used for cooling the cooling liquid are further arranged at the cooling mechanism installation cavity. The cooling box and the cooling mechanism mounting cavity are tightly attached and in transition fit, and it is guaranteed that heat of the cavity is evenly transferred to the cooling box; and meanwhile, the temperature uniformity of the cooling liquid ensures that the heat conduction efficiency of each area of the cooling box is consistent, so that the cooling speed of each position of the cavity is the same, and the service life of the automobile sealing strip is well prolonged.

Description

Technical Field

[0001] This invention relates to the field of automotive sealing strip injection molding technology, and more specifically, to an injection molding apparatus for processing automotive glass sealing strips. Background Technology

[0002] As a key sealing component of automotive doors and windows, the elasticity of automotive glass sealing strips directly affects the vehicle's sound insulation, waterproofing performance, and driving experience. Injection molding is the mainstream processing method for automotive glass sealing strips, and the cooling effect of the mold cavity is one of the core factors determining the molding quality of the sealing strip. In the existing injection mold structure for automotive glass sealing strips, in order to achieve rapid cooling of the cavity and ensure the molding efficiency and quality of the product, the commonly used cooling solution in the industry is to directly open a cold flow channel inside the mold. By introducing coolant into the cold flow channel, the heat accumulated in the cavity during the injection molding process is transferred to the coolant using the principle of heat conduction, thereby completing the cooling operation of the cavity.

[0003] However, the aforementioned cooling structure has significant technical defects in practical applications, making it difficult to meet the stringent requirements of automotive glass sealing strips for molding precision and elasticity. On one hand, the cold flow channel is directly located inside the mold. The large amount of heat generated during injection molding is directly transferred to the coolant within the cold flow channel. As the injection process continues, the coolant near the cavity wall rapidly absorbs heat and heats up, while the coolant further away remains relatively cool. This results in a significant temperature gradient within the cold flow channel, making it impossible to maintain a stable and uniform temperature, thus severely interfering with the overall cooling effect. On the other hand, due to the temperature differences of the coolant at various points within the cold flow channel, the heat exchange efficiency between different locations in the mold cavity and the coolant also deviates. This prevents uniform cooling of the cavity, with some areas cooling too quickly and others too slowly. This uneven cooling process leads to uneven internal stress within the molded automotive glass sealing strip, damaging its elastic properties and causing deformation and insufficient resilience, severely impacting the performance and lifespan of the automotive glass sealing strip. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution.

[0005] An injection molding device for processing automotive glass sealing strips includes an injection molding device body, which includes an injection molding machine base. An injection molding mechanism is provided on the injection molding machine base, and the injection molding mechanism includes a lower mold and an upper mold. The upper mold is movable along the height direction of the injection molding machine base. Both the lower mold and the upper mold have cavities. A cooling mechanism mounting cavity is provided in both the upper and lower molds. The bottom end face of the cooling mechanism mounting cavity extends to near the cavity end. A cooling mechanism for cooling the cavities of the upper and lower molds is provided in the cooling mechanism mounting cavity. The cooling mechanism includes a cooling tank, which is movable along the height direction of the cooling mechanism mounting cavity. The cooling tank has a coolant reservoir for containing coolant. The bottom end face of the cooling tank is used to abut against the bottom end face of the cooling mechanism mounting cavity to cool the cavities of the upper and lower molds. A water circulation mechanism for driving the flow of coolant in the cooling tank and a cooling mechanism for cooling the coolant are also provided in the cooling mechanism mounting cavity.

[0006] As a preferred embodiment of the present invention, the upper mold and the lower mold are provided with mounting brackets for mounting the cooling mechanism. The mounting brackets include first connecting columns disposed at the upper mold and the lower mold, and the end of the first connecting column away from the mounting cavity of the cooling mechanism is bolted to a first mounting plate. The cooling box includes a sealing plate for sealing the coolant cavity. The sealing plate is provided with a second connecting column, and the end of the second connecting column away from the mounting cavity of the cooling mechanism is bolted to a second mounting plate. The first mounting plate is provided with a cooling box drive cylinder, and the piston rod of the cooling box drive cylinder is connected to the second mounting plate.

[0007] As a preferred embodiment of the present invention, an upper mold drive cylinder is also provided at the injection molding machine base, and the piston rod of the upper mold drive cylinder is connected to the first mounting plate.

[0008] As a preferred embodiment of the present invention, the water circulation mechanism includes a water storage tank disposed at the second mounting plate, a water outlet pump for drawing coolant from the water storage tank is provided in the middle of the water storage tank, the inlet of the water outlet pump is connected to the water storage tank, a drain pipe is connected to the outlet of the water outlet pump, the end of the drain pipe passes through the sealing plate and extends into the coolant cavity, and the end of the drain pipe extending into the coolant cavity is provided with a drain pipe through hole; two water inlet pumps are provided at the water storage tank, the two water inlet pumps are respectively disposed at both ends of the water outlet pump, the drain ports of the two water inlet pumps are connected to the water storage tank, the inlet ports of the two water inlet pumps are connected to water inlet pipes, the end of the water inlet pipe passes through the sealing plate and extends into the coolant cavity, and the end of the water inlet pipe extending into the coolant cavity is provided with a water inlet pipe through hole.

[0009] As a preferred embodiment of the present invention, the cooling mechanism includes heat dissipation fins disposed on the sealing plate, the water inlet pipe and the water outlet pipe are both rotatable on the sealing plate, the water inlet pipe is provided with heat dissipation blades that cooperate with the heat dissipation fins, and the mounting bracket is provided with a drive mechanism for driving the water inlet pipe to rotate.

[0010] As a preferred embodiment of the present invention, a driven gear meshing with the drain pipe and the inlet pipe is provided, and the driving mechanism includes a drive motor provided at the mounting bracket, and a driving gear is provided at the shaft of the drive motor, and the driving gear meshes with its adjacent driven gear.

[0011] As a preferred embodiment of the present invention, a rotary joint connector is provided between the outlet pump and the drain pipe, and between the inlet pump and the inlet pipe; a sealed bearing is provided between the sealing plate and the inlet pipe and the drain pipe.

[0012] As a preferred embodiment of the present invention, both the end of the drain pipe extending into the coolant cavity and the end of the inlet pipe extending into the coolant cavity are provided with stirring blades.

[0013] As a preferred embodiment of the present invention, the cooling box is provided with a cooling box through hole, and an injection tube is provided in the cooling box through hole. One end of the injection tube is connected to the cavity of the upper mold, and the other end of the injection tube passes through the sealing plate and is connected to the injection molding machine. A sealing sleeve is provided at the bottom end of the coolant cavity corresponding to the cooling box through hole, and the upper end of the sealing sleeve abuts against the sealing plate.

[0014] As a preferred embodiment of the present invention, the side wall of the cooling box and the inner wall of the cooling mechanism mounting cavity are transitionally fitted.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. This invention ensures that the heat in the mold cavity is evenly transferred to the cooling box by tightly fitting and transitioning the cooling box and the cooling mechanism mounting cavity; at the same time, the uniformity of the coolant temperature ensures that the heat conduction efficiency of each area of ​​the cooling box is consistent, thereby achieving the same cooling rate in each position of the mold cavity, which better improves the elastic performance of the automotive sealing strip, and thus better extends the service life of the automotive sealing strip.

[0017] 2. This invention utilizes a sub-vacuum cavity insulation design formed between the bottom surface of the cooling box and the bottom surface of the cooling mechanism mounting cavity to block heat transfer between the mold cavity and the cooling box, ensuring stable mold cavity temperature during injection molding and avoiding defects such as insufficient filling and low molding accuracy caused by premature cooling of the raw material. At the same time, the high thermal conductivity material design of the cooling box allows heat to be avoided through the sub-vacuum cavity during the injection molding stage, while enabling rapid heat conduction during the cooling stage, achieving precise switching between heat preservation and heat conduction. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the injection molding device for processing automotive glass sealing strips in Example 1;

[0019] Figure 2 This is a cross-sectional view of the injection molding device for processing automotive glass sealing strips in Example 1;

[0020] Figure 3 for Figure 2 Enlarged view of section A;

[0021] Figure 4 This is a schematic diagram of the upper mold and cooling mechanism in Example 1;

[0022] Figure 5 This is a cross-sectional view of the upper mold and cooling mechanism in Example 1;

[0023] Figure 6 This is a half-sectional view of the cooling box in Example 1;

[0024] Figure 7 This is a schematic diagram of the water circulation mechanism and cooling mechanism in Example 1;

[0025] Figure 8 This is a half-sectional view of the upper mold in Example 1.

[0026] The attached figures are labeled as follows:

[0027] 100. Injection molding unit body; 110. Injection molding machine base; 120. Lower mold; 130. Upper mold; 140. Cooling mechanism mounting cavity; 150. Upper mold drive cylinder; 310. Cavity; 320. Cooling tank; 330. Coolant reservoir; 410. Mounting bracket; 411. First connecting column; 412. First mounting plate; 420. Second connecting column; 430. Second mounting plate; 440. Cooling tank drive cylinder; 450. Water storage tank; 510. 520. Sealing plate; 530. Outlet pump; 540. Drain pipe; 550. Drain pipe through hole; 560. Inlet pump; 570. Inlet pipe through hole; 580. Heat dissipation blades; 610. Heat dissipation fins; 620. Cooling box through hole; 630. Sealing sleeve; 710. Driven gear; 720. Drive motor; 730. Drive gear; 740. Rotary joint connector; 750. Sealed bearing; 760. Stirring blades; 810. Injection molding pipe. Detailed Implementation

[0028] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the invention.

[0029] Example 1, such as Figure 1-8As shown, this embodiment discloses an injection molding device for processing automotive glass sealing strips. The injection molding device includes an injection molding device body 100, which includes an injection molding machine base 110. An injection molding mechanism is mounted on the injection molding machine base 110. The injection molding mechanism consists of a lower mold 120 and an upper mold 130. The upper mold 130 can move along the height direction of the injection molding machine base 110 to realize mold closing and mold opening actions. Cavities 310 are opened on opposite sides of the lower mold 120 and the upper mold 130. The cavities 310 are used to form automotive glass sealing strips.

[0030] Both the upper mold 130 and the lower mold 120 have cooling mechanism mounting cavities 140 inside. The bottom end face of the cooling mechanism mounting cavity 140 extends to the side near the cavity 310. The cooling mechanism mounting cavity 140 is equipped with a cooling mechanism for cooling the cavity 310. The cooling mechanism includes a cooling box 320, which is made of a metal material with good thermal conductivity. The cooling box 320 can move along the height direction of the cooling mechanism mounting cavity 140. The cooling box 320 has a coolant cavity 330 inside, which is used to contain coolant. The cooling mechanism mounting cavity 140 is also equipped with a water circulation mechanism for driving the flow of coolant in the coolant cavity 330, and a cooling mechanism for cooling the coolant.

[0031] Both the upper mold 130 and the lower mold 120 are equipped with mounting brackets 410 for mounting the cooling mechanism. The mounting brackets 410 include a first connecting column 411 fixedly mounted on the upper mold 130 and the lower mold 120. The end of the first connecting column 411 away from the cooling mechanism mounting cavity 140 is bolted to a first mounting plate 412. The cooling box 320 includes a sealing plate 510 for sealing the coolant cavity 330. A second connecting column 420 is fixedly mounted on the sealing plate 510. The end of the second connecting column 420 away from the cooling mechanism mounting cavity 140 is bolted to a second mounting plate 430. A cooling box drive cylinder 440 is fixedly mounted on the first mounting plate 412. The piston rod of the cooling box drive cylinder 440 is fixedly connected to the second mounting plate 430. The cooling box 320 can be driven to move along the height direction of the cooling mechanism mounting cavity 140 by the extension and retraction of the cooling box drive cylinder 440.

[0032] An upper mold drive cylinder 150 is also fixedly installed on the injection molding machine base 110. The piston rod of the upper mold drive cylinder 150 is fixedly connected to the first mounting plate 412. Through the extension and retraction of the upper mold drive cylinder 150, the upper mold 130 can be driven to move along the height direction of the injection molding machine base 110 to realize mold closing and mold opening.

[0033] The water circulation mechanism includes a water storage tank 450 fixedly mounted on the second mounting plate 430. A water pump 520 is installed in the middle of the water storage tank 450. The inlet of the water pump 520 is connected to the interior of the water storage tank 450. A drain pipe 530 is fixedly connected to the outlet of the water pump 520. One end of the drain pipe 530 passes through the sealing plate 510 and extends into the coolant cavity 330. A drain pipe through hole 540 is opened at the end of the drain pipe 530 extending into the coolant cavity 330. The water pump 520 can draw coolant from the water storage tank 450 and discharge it into the coolant cavity 330 through the drain pipe 530 and the drain pipe through hole 540. Two water inlet pumps 550 are also installed on the 450. The two water inlet pumps 550 are symmetrically arranged at both ends of the water outlet pump 520. The drain outlet of the water inlet pump 550 is connected to the inside of the water storage tank 450. A water inlet pipe 560 is fixedly connected to the water inlet of the water inlet pump 550. One end of the water inlet pipe 560 passes through the sealing plate 510 and extends into the coolant cavity 330. The end of the water inlet pipe 560 extending into the coolant cavity 330 has a water inlet pipe through hole 570. The water inlet pump 550 can pump the coolant in the coolant cavity 330 to the water storage tank 450 through the water inlet pipe 560 and the water inlet pipe through hole 570, thereby realizing the circulation of coolant.

[0034] The cooling mechanism includes heat dissipation fins 610 fixedly mounted on the sealing plate 510, and water inlet pipe 560 and drain pipe 530 that can rotate relative to the sealing plate 510. Heat dissipation blades 580 that cooperate with the heat dissipation fins 610 are fixedly mounted on the water inlet pipe 560, and a drive mechanism for driving the water inlet pipe 560 to rotate is mounted on the mounting bracket 410.

[0035] Both the drain pipe 530 and the inlet pipe 560 are fixedly fitted with meshing driven gears 710. The drive mechanism includes a drive motor 720 fixedly mounted on the mounting bracket 410. A drive gear 730 is fixedly fitted on the shaft of the drive motor 720. The drive gear 730 meshes with the adjacent driven gear 710. By driving the drive gear 730 to rotate through the drive motor 720, the driven gear 710 can be driven to rotate, thereby driving the inlet pipe 560 and the drain pipe 530 to rotate synchronously.

[0036] In addition, stirring blades 760 are fixedly installed at the ends of the drain pipe 530 and the inlet pipe 560 that extend into the coolant cavity 330. When the inlet pipe 560 and the drain pipe 530 rotate, they can drive the stirring blades 760 to stir the coolant in the coolant cavity 330.

[0037] Rotary joint type connectors 740 are installed between the outlet pump 520 and the drain pipe 530, and between the inlet pump 550 and the inlet pipe 560, to ensure the sealed delivery of coolant when the inlet pipe 560 and the drain pipe 530 rotate; sealing bearings 750 are installed between the sealing plate 510 and the inlet pipe 560, and between the sealing plate 510 and the drain pipe 530, to ensure the sealing performance between the sealing plate 510 and the inlet pipe 560 and the drain pipe 530.

[0038] A cooling box through hole 620 is provided in the middle of the cooling box 320. An injection tube 810 is inserted through the cooling box through hole 620. One end of the injection tube 810 is connected to the cavity 310 of the upper mold 130, and the other end of the injection tube 810 passes through the sealing plate 510 and is connected to an external injection molding machine for injecting molten sealing strip material into the cavity 310. A sealing sleeve 630 is fixedly provided at the bottom end of the coolant cavity 330 corresponding to the position of the cooling box through hole 620. The upper end of the sealing sleeve 630 abuts against the sealing plate 510 to ensure the sealing performance of the coolant cavity 330 at the cooling box through hole 620 and prevent coolant leakage.

[0039] The side wall of the cooling box 320 and the inner wall of the cooling mechanism mounting cavity 140 adopt a transition fit, which not only ensures the smooth movement of the cooling box 320 along the height direction of the cooling mechanism mounting cavity 140, but also reduces the gap between the cooling box 320 and the cooling mechanism mounting cavity 140, thereby improving the heat transfer efficiency in the subsequent cooling process.

[0040] During the injection molding process, the cooling box 320 is driven to move upward by the cooling box drive cylinder 440, so that the bottom end face of the cooling box 320 is separated from the bottom end face of the cooling mechanism mounting cavity 140. At this time, a sub-vacuum cavity is formed between the bottom end face of the cooling box 320 and the bottom end face of the cooling mechanism mounting cavity 140. The sub-vacuum cavity can block the heat in the cavity 310 from being transferred to the cooling box 320 through the bottom end face of the cooling mechanism mounting cavity 140, thus ensuring the temperature of the cavity 310 is stable during the injection molding process.

[0041] During the injection molding of automotive sealing strips, the upper mold drive cylinder 150 extends and retracts to drive the first mounting plate 412 to move downward, causing the upper mold 130 to move downward along the height direction of the injection molding machine table 110 until it is tightly fitted with the lower mold 120. The cavity 310 of the upper mold 130 and the cavity 310 of the lower mold 120 enclose each other to form a complete molding cavity, providing a sealed space for material filling.

[0042] The cooling box drive cylinder 440 extends and retracts, driving the second mounting plate 430 to move upward, causing the cooling box 320 to move upward along the cooling mechanism mounting cavity 140, so that the bottom surface of the cooling box 320 is separated from the bottom surface of the cooling mechanism mounting cavity 140, forming a sub-vacuum cavity. Since the heat transfer efficiency is extremely low in the sub-vacuum state, the heat of the molten material in the cavity 310 can be directly blocked from being transferred to the cooling box 320, avoiding problems such as insufficient filling and low molding accuracy caused by premature cooling of the material, and ensuring that the cavity 310 is maintained in the temperature range suitable for molding the material.

[0043] The outlet pump 520, inlet pump 550, and drive motor 720 are started simultaneously. The outlet pump 520 draws coolant from the storage tank 450 and injects it into the coolant cavity 330 through the drain pipe 530 and drain pipe through hole 540. The inlet pump 550 draws the coolant from the coolant cavity 330 back into the storage tank 450 through the inlet pipe 560 and inlet pipe through hole 570, forming a closed-loop circulation. The drive motor 720 drives the drive gear 730 to rotate, which, through the meshing transmission of the driven gear 710, drives the inlet pipe 560 and drain pipe 530 to rotate synchronously. This, in turn, drives the stirring blades 760 to rotate, forcibly stirring the coolant in the coolant cavity 330 to avoid local temperature deviations caused by coolant stratification. At the same time, the inlet pipe 560 drives the heat dissipation blades 580 to rotate, which, in conjunction with the heat dissipation fins 610, dissipate heat from the circulating coolant, maintain the preset temperature of the coolant, and reserve cooling capacity for the subsequent cooling stage.

[0044] The external injection molding machine injects molten sealing strip material into the cavity 310 through the injection tube 810. The sealing sleeve 630 cooperates with the sealing plate 510 to ensure the seal between the injection tube 810 and the cooling box 320, preventing material leakage or coolant seepage into the injection channel.

[0045] After injection molding is completed, the cooling box drive cylinder 440 reverses and extends to drive the second mounting plate 430 downward, causing the cooling box 320 to move downward along the cooling mechanism mounting cavity 140 until the bottom end face of the cooling box 320 is tightly fitted with the bottom end face of the cooling mechanism mounting cavity 140. Because the cooling box 320 is made of a high thermal conductivity metal material and has a transition fit with the cooling mechanism mounting cavity 140 (which can reduce heat loss through gaps), the heat from the forming sealing strip in the cavity 310 can be quickly and evenly transferred to the cooling box 320 through the bottom end face of the cooling mechanism mounting cavity 140.

[0046] The water circulation system operates continuously, with coolant circulating between the water tank 450 and the coolant cavity 330. The heat absorbed by the cooling tank 320 is transferred to the coolant through heat conduction. The stirring blades 760 continuously stir the coolant to ensure that the coolant temperature is consistent in all areas of the coolant cavity 330, thereby ensuring uniform heat conduction efficiency in all parts of the cooling tank 320. At the same time, the heat dissipation blades 580 and the heat dissipation fins 610 work together to accelerate the dissipation of heat from the coolant to the outside, keeping the coolant circulating back to the water tank 450 at a low temperature, thus ensuring the continuity and stability of the cooling effect.

[0047] After the sealing strip cools to the preset temperature, the upper mold drive cylinder 150 reverses and extends to drive the upper mold 130 to move upward, completing the mold opening, and the formed sealing strip can be taken out.

[0048] In this embodiment, the rotary joint connector 740 ensures a sealed connection between the inlet pipe 560 and the drain pipe 530 and the pump body when they rotate, preventing coolant leakage. The sealed bearing 750 ensures smooth rotation of the inlet pipe 560 and the drain pipe 530, and also achieves a seal between the sealing plate 510 and the pipe, preventing coolant leakage from the coolant cavity 330. The sealing sleeve 630 seals the through hole 620 of the cooling box, isolating the coolant from the injection molding pipe 810 and preventing mutual interference.

[0049] In this embodiment, the mounting bracket 410, through the combination structure of the first connecting column 411, the first mounting plate 412, the second connecting column 420, and the second mounting plate 430, provides a stable mounting foundation for the cooling box drive cylinder 440 and the upper mold drive cylinder 150, ensuring the accuracy of the movement of the cooling box 320 and the upper mold 130 and improving the operational stability of the device.

[0050] The injection molding device for processing automotive glass sealing strips in this embodiment achieves the following technical effects through the above solution:

[0051] 1. In existing technologies, the cold flow channel is directly located inside the mold. During injection molding, heat from the cavity is easily transferred to the coolant, causing the raw material to cool down prematurely and affecting the filling and molding process. In this embodiment, the injection molding device for processing automotive glass sealing strips uses a sub-vacuum cavity insulation design formed between the bottom end face of the cooling box 320 and the bottom end face of the cooling mechanism mounting cavity 140 to block heat transfer between the cavity 310 and the cooling box 320. This ensures that the temperature of the cavity 310 remains stable during injection molding and avoids defects such as insufficient filling and low molding accuracy caused by premature cooling of the raw material. At the same time, the high thermal conductivity material design of the cooling box 320 allows heat to be avoided through the sub-vacuum cavity during the injection molding stage and rapid heat conduction during the cooling stage, achieving a precise switch between heat preservation and heat conduction.

[0052] 2. In this embodiment, the injection molding device for processing automotive glass sealing strips utilizes a symmetrically distributed outlet pump 520 and two inlet pumps 550 to ensure more uniform coolant flow and avoid localized stagnation. Simultaneously, the stirring blades 760 forcefully stir the coolant, breaking up coolant stratification and ensuring a consistent coolant temperature within the coolant cavity 330. Furthermore, the heat dissipation blades 580 and fins 610 work together to dissipate heat in real time, maintaining the circulating coolant at a stable low temperature and eliminating temperature gradient defects.

[0053] 3. In this embodiment, the injection molding device for processing automotive glass sealing strips ensures uniform heat transfer from the cavity 310 to the cooling box 320 through a tight fit and transition between the cooling box 320 and the cooling mechanism mounting cavity 140. Simultaneously, the uniformity of the coolant temperature ensures consistent thermal conductivity across all areas of the cooling box 320, thereby achieving the same cooling rate at all locations within the cavity 310. This uniform cooling process avoids uneven internal stress within the sealing strip, effectively reducing defects such as deformation and insufficient resilience, improving the elasticity of the automotive sealing strip, and ensuring its sound insulation and waterproofing effects, thus extending the service life of the automotive sealing strip.

[0054] In summary, the above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made in accordance with the scope of the claims of the present invention should fall within the scope of the present invention.

Claims

1. An injection molding device for processing automotive glass sealing strips, characterized in that: The device includes an injection molding unit body (100), which includes an injection molding machine base (110). An injection molding mechanism is provided at the injection molding machine base (110), including a lower mold (120) and an upper mold (130). The upper mold (130) is movable along the height direction of the injection molding machine base (110). Cavities (310) are provided at both the lower mold (120) and the upper mold (130). Cooling mechanism mounting cavities (140) are provided in both the upper mold (130) and the lower mold (120). The bottom end face of the cooling mechanism mounting cavity (140) extends to the end near the cavity (310). The cooling mechanism mounting cavity (140) is provided for mounting the cavity (310) of the upper mold (130) and the lower mold (120). A cooling mechanism for cooling the cavity (310) of the mold (120); the cooling mechanism includes a cooling box (320), which can move along the height direction of the cooling mechanism mounting cavity (140); the cooling box (320) is provided with a coolant cavity (330), which is used to contain coolant, and the bottom end face of the cooling box (320) is used to fit against the bottom end face of the cooling mechanism mounting cavity (140) to cool down the cavity (310) of the upper mold (130) and the cavity (310) of the lower mold (120). The cooling mechanism mounting cavity (140) is also provided with a water circulation mechanism for driving the flow of coolant in the cooling box (320) and a cooling mechanism for cooling down the coolant.

2. The injection molding device for processing automotive glass sealing strips according to claim 1, characterized in that: The upper mold (130) and the lower mold (120) are provided with mounting brackets (410) for installing the cooling mechanism. The mounting brackets (410) include first connecting columns (411) located at the upper mold (130) and the lower mold (120). The end of the first connecting column (411) away from the cooling mechanism mounting cavity (140) is bolted to a first mounting plate (412). The cooling box (320) includes a sealing plate (510) for sealing the coolant cavity (330). The sealing plate (510) is provided with a second connecting column (420). The end of the second connecting column (420) away from the cooling mechanism mounting cavity (140) is bolted to a second mounting plate (430). The first mounting plate (412) is provided with a cooling box drive cylinder (440). The piston rod of the cooling box drive cylinder (440) is connected to the second mounting plate (430).

3. The injection molding device for processing automotive glass sealing strips according to claim 2, characterized in that: An upper mold drive cylinder (150) is also provided at the injection molding machine (110), and the piston rod of the upper mold drive cylinder (150) is connected to the first mounting plate (412).

4. The injection molding device for processing automotive glass sealing strips according to claim 2, characterized in that: The water circulation mechanism includes a water storage tank (450) located on the second mounting plate (430). A water pump (520) for drawing coolant from the water storage tank (450) is provided in the middle of the water storage tank (450). The inlet of the water pump (520) is connected to the water storage tank (450). A drain pipe (530) is connected to the outlet of the water pump (520). The end of the drain pipe (530) passes through the sealing plate (510) and extends into the coolant cavity (330). The end of the drain pipe (530) extending into the coolant cavity (330) is provided with a drain pipe through hole. (540); Two water inlet pumps (550) are provided at the water storage tank (450). The two water inlet pumps (550) are respectively located at both ends of the water outlet pump (520). The drain outlets of the two water inlet pumps (550) are connected to the water storage tank (450). The water inlet of the two water inlet pumps (550) is connected to the water inlet pipe (560). The end of the water inlet pipe (560) passes through the sealing plate (510) and extends into the coolant cavity (330). The end of the water inlet pipe (560) extending into the coolant cavity (330) is provided with a water inlet pipe through hole (570).

5. The injection molding device for processing automotive glass sealing strips according to claim 4, characterized in that: The cooling mechanism includes heat dissipation fins (610) set on the sealing plate (510), water inlet pipe (560) and drain pipe (530) which can rotate on the sealing plate (510), heat dissipation blades (580) that cooperate with the heat dissipation fins (610) are provided on the water inlet pipe (560), and a drive mechanism for driving the water inlet pipe (560) to rotate is provided on the mounting bracket (410).

6. The injection molding device for processing automotive glass sealing strips according to claim 5, characterized in that: A driven gear (710) meshes between the drain pipe (530) and the inlet pipe (560). The drive mechanism includes a drive motor (720) located on the mounting bracket (410). A drive gear (730) is located on the shaft of the drive motor (720). The drive gear (730) meshes with its adjacent driven gear (710).

7. The injection molding device for processing automotive glass sealing strips according to claim 5, characterized in that: Rotary joint type connectors (740) are provided between the outlet pump (520) and the drain pipe (530) and between the inlet pump and the inlet pipe (560); sealed bearings (750) are provided between the sealing plate (510) and the inlet pipe (560) and the drain pipe (530).

8. The injection molding device for processing automotive glass sealing strips according to claim 5, characterized in that: Both the end of the drain pipe (530) that extends into the coolant cavity (330) and the end of the inlet pipe (560) that extends into the coolant cavity (330) are equipped with stirring blades (760).

9. The injection molding device for processing automotive glass sealing strips according to claim 2, characterized in that: The cooling box (320) is provided with a cooling box through hole (620), and an injection tube (810) is provided in the cooling box through hole (620). One end of the injection tube (810) is connected to the cavity (310) of the upper mold (130), and the other end of the injection tube (810) passes through the sealing plate (510) and is connected to the injection molding machine. The bottom end of the coolant cavity (330) is provided with a sealing sleeve (630) corresponding to the cooling box through hole (620), and the upper end of the sealing sleeve (630) abuts against the sealing plate (510).

10. The injection molding device for processing automotive glass sealing strips according to claim 1, characterized in that: The side wall of the cooling box (320) and the inner wall of the cooling mechanism mounting cavity (140) are transitionally fitted.

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