A micro-foam injection molding process for automobile sound insulation inlay panels

Abstract

The present invention relates to the field of micro-foam injection molding technology, and specifically to a micro-foam injection molding process for automobile sound insulation inlay panels, comprising the following steps: adding injection molding material to a micro-foam injector, and driving a lower mold and an upper mold to move to the bottom of a fixed frame by a slide plate to perform micro-foam injection molding, and at the same time limiting the slide plate by a limiting mechanism to prevent the slide plate from moving, and when the injection molding of a lower mold and an upper mold is completed, driving another lower mold and another upper mold to move to the bottom of the fixed frame by the slide plate for injection molding, and moving the lower mold and upper mold that have been injected to the bottom of the opening and closing mechanism. The present invention can switch injection molding between two groups of upper molds and lower molds through the injection molding mechanism and cooling mechanism, improve the cooling speed and cooling effect, and continue to perform injection molding on the next product, thereby improving the working efficiency of the injection molding device, and further improving the production efficiency of the inlay panels.

Description

Technical Field

[0001] The invention relates to the technical field of micro-foam injection molding, and in particular to a micro-foam injection molding process for automobile sound insulation inlay panels. Background Art

[0002] Car sound insulation inlays are a kind of decorative parts used in car interiors. They can not only improve the overall aesthetics of the interior environment, but also reduce the interference of external noise on the interior of the car by absorbing and blocking noise, improve the quietness of the interior of the car, and provide passengers with a more comfortable driving environment. At the same time, they also have functions such as heat insulation and shock absorption.

[0003] In order to meet the demand for lightweight automobiles, existing factories usually use micro-foam injection molding technology when making automobile sound insulation panels. This can significantly reduce the weight while ensuring the basic mechanical properties of the panels. The basic principle of the micro-foam injection molding process is to inject supercritical fluids such as carbon dioxide or nitrogen into the homogenization zone of the injection molding machine screw through a supercritical fluid control system. Under the plasticizing shearing action of the screw, the supercritical fluid and the polymer melt are fully mixed to form a single-phase solution, which is maintained at a certain constant pressure. When the injection command of the injection molding machine is issued, the self-locking nozzle opens and the single-phase solution is injected into the mold cavity with lower temperature and pressure. Due to the decrease in temperature and pressure, the instability of the molecules is triggered, thereby forming a large number of bubble nuclei in the product. These bubble nuclei gradually grow and generate tiny holes, eventually forming micro-foam products.

[0004] Considering that the injection molding device in the prior art usually injects the injection material into the molding mold during the injection molding process, and waits for the injection material to be cooled and formed, thereby completing the processing of the product, since the temperature of the injection material is high during injection molding, it takes a long time to wait for it to cool down during the cooling and forming process, and at this time the injection molding device is not convenient for processing the next product, which leads to reduced working efficiency and use effect of the injection molding device. Summary of the invention

[0005] The purpose of the present invention is to provide a micro-foam injection molding process for automobile sound insulation inlay panels.

[0006] To achieve this object, the present invention adopts the following technical solutions: Provided is a micro-foam injection molding process for automobile sound insulation inlay panels, comprising the following steps: adding injection molding material to a micro-foam injection molding machine, and driving a lower mold and an upper mold to move to the bottom of a fixed frame by a slide plate to perform micro-foam injection molding, and at the same time limiting the slide plate by a limiting mechanism to prevent the slide plate from moving; when the injection molding of a lower mold and an upper mold is completed, driving another lower mold and another upper mold to move to the bottom of the fixed frame by the slide plate to perform injection molding, and moving the lower mold and the upper mold after injection molding to the bottom of an opening and closing mechanism; during the injection molding of another lower mold and another upper mold, a cooling mechanism is used to cool and mold the injection molding material in the lower mold and the upper mold under the opening and closing mechanism; after the injection molding material in the lower mold and the upper mold is cooled and molded, the opening and closing mechanism can drive the upper mold to open, so as to facilitate demolding of the molded inlay panel. After completion, the opening and closing mechanism drives the upper mold and the lower mold to close the mold, and repeats the above steps, including a base, a fixed box, an injection molding mechanism, a cooling mechanism, an opening and closing mechanism, two lower molds and two upper molds, the fixed box is fixedly installed on the base, the two lower molds are fixedly installed on the injection molding mechanism, the two upper molds can be slidably installed on the two lower molds respectively, the injection molding mechanism is fixedly installed on the fixed box, the injection molding mechanism is used to perform injection molding between the lower mold and the upper mold, the cooling mechanism is fixedly installed on the base, the cooling mechanism is used to cool the injection molded material, the opening and closing mechanism is fixedly installed on the fixed box, the opening and closing mechanism is used to open and close the lower mold and the upper mold, the injection molding mechanism includes a slide plate and a limiting mechanism, the slide plate can be slidably installed on the fixed box, the slide plate is used to drive the lower mold and the upper mold to move, the limiting mechanism is fixedly installed on the fixed box, and the limiting mechanism is used to limit the slide plate.

[0007] Furthermore, the injection molding mechanism also includes a support frame, a micro-foam injector and a fixed frame, the support frame is fixedly installed on the base, the micro-foam injector is fixedly installed on the support frame, the fixed frame is fixedly installed on the fixed box, and a through hole is opened on the fixed frame, which is connected to the output end of the micro-foam injector.

[0008] Furthermore, the injection molding mechanism also includes an electric slide rail and a T-block. The electric slide rail is fixedly installed on the fixed box, the slide plate is slidably connected to the electric slide rail, the slide plate is fixedly connected to the two lower molds, the T-block is fixedly installed on the upper mold, a T-slot is opened on the fixed frame, and the T-slot is slidably connected to the T-block.

[0009] Furthermore, the limiting mechanism includes a rotating shaft, a bidirectional telescopic rod, two sliders and a motor. The rotating shaft can be rotatably installed on a fixed box, the middle part of the bidirectional telescopic rod is fixedly connected to the rotating shaft, the two ends of the bidirectional telescopic rod are respectively hinged to the two sliders, the two sliders can be slidably installed on the fixed box, the motor is fixedly installed on the base, and the output shaft of the motor is fixedly connected to the rotating shaft.

[0010] Furthermore, the limiting mechanism also includes a wedge block, the wedge block is connected to the slider via a spring, and the wedge block is slidably connected to the slider, and a groove is provided on the slider.

[0011] Furthermore, the cooling mechanism includes a sleeve, a sphere, a cylindrical rod, a ring and two circular tubes. The sleeve is fixedly mounted on the fixed box. The sphere and the ring are connected by the cylindrical rod, and the cylindrical rod passes through the fixed box. The two circular tubes are respectively fixedly mounted on both sides of the fixed box, and one circular tube is slidably connected to the ring. The ring and the fixed box are connected by a reset spring.

[0012] Furthermore, the cooling mechanism also includes a cooling water tank, a U-shaped ferrule 1, a U-shaped ferrule 2 and a collecting box. The cooling water tank is fixedly installed on the base, and the cooling water tank and the sleeve are connected through a delivery pipe. The collecting box is fixedly installed on the base, and the collecting box is connected to another round tube through a connecting pipe. The U-shaped ferrule 1 and the U-shaped ferrule 2 are both fixedly installed on the lower mold, and water inlets and water outlets are respectively provided on both sides of the lower mold, and the water inlets and water outlets correspond to the U-shaped ferrule 1 and the U-shaped ferrule 2 respectively. The U-shaped ferrule 1 is plugged into one round tube, and the U-shaped ferrule 2 is plugged into another round tube.

[0013] Furthermore, the opening and closing mechanism includes an electric telescopic rod and a movable plate, the electric telescopic rod is fixedly installed on the fixed box, the movable plate is fixedly installed on the output end of the electric telescopic rod, and a T-slot 2 is opened on the movable plate, and the T-slot 2 is slidably connected to the T-block.

[0014] The beneficial effects of the present invention are as follows: 1. The present invention can switch injection molding between two groups of upper molds and lower molds through the injection molding mechanism and cooling mechanism, so that during the cooling molding process of one group of upper molds and lower molds, the cooling speed and cooling effect can be improved, and the next product can continue to be injection molded, thereby improving the working efficiency of the injection molding device and further improving the production efficiency of the inlaid panels.

[0015] 2. The present invention sets a limiting mechanism so that the slide plate can limit the slide plate when it drives the upper mold and the lower mold to move to the injection molding position, so that the upper mold and the lower mold remain fixed and avoid the upper mold and the lower mold from shifting during the injection molding process, thereby improving the injection molding process effect of the injection molding device and improving the product quality of the molded decorative panel.

[0016] 3. The present invention provides an opening and closing mechanism, which can automatically open the upper mold and the lower mold after the injection molding is completed, thereby facilitating the demolding of the molded decorative panel, and closing the mold after the demolding is completed, while improving the tightness after the mold closing, further improving the injection molding effect and production efficiency of the decorative panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the embodiments of the present invention are briefly introduced below.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the overall main structure of the present invention; Figure 3 It is a schematic diagram of the main structure of the base of the present invention; Figure 4 It is a schematic diagram of the main structure of the fixing box of the present invention; Figure 5 It is a schematic diagram of the structure of the upper mold and the lower mold in the separated state of the present invention; Figure 6 It is a schematic diagram of the main structure of the fixing frame of the present invention; Figure 7 It is a schematic diagram of the longitudinal cross-sectional structure of the fixing box of the present invention; Figure 8 For the present invention Figure 7 The enlarged structural diagram of part A in the middle; Fig. 9 It is a schematic diagram of the cross-sectional structure of the fixing box of the present invention; Fig.10 For the present invention Fig. 9 The enlarged structural diagram of part B in the middle; Fig.11 It is a schematic diagram of the main structure of the sphere of the present invention; Fig.12 It is a schematic diagram of the main structure of the upper mold and the lower mold of the present invention; Fig.13 It is a schematic diagram of the front structural view of the movable plate of the present invention.

[0019] In the figure: 1. base; 2. fixing box; 3. injection mechanism; 31. support frame; 32. micro-foaming injection molding device; 33. fixing frame; 34. electric slide rail; 35. slide plate; 36. T-block; 37. T-slot 1; 38. limit mechanism; 381. rotating shaft; 382. two-way telescopic rod; 383. slider; 384. spring; 385. wedge block; 386. motor; 387. groove; 4. cooling mechanism; 41. cooling water tank; 42. conveying pipe; 43. sleeve; 44. sphere; 45. cylindrical rod; 46. ring; 47. reset spring; 48. round tube; 49. U-shaped ferrule 1; 410. U-shaped ferrule 2; 411. collection box; 412. connecting pipe; 5. opening and closing mechanism; 51. electric telescopic rod; 52. moving plate; 53. T-slot 2; 6. lower mold; 7. upper mold. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0021] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product.

[0022] Reference Figures 1 to 13 The micro-foam injection molding process of a car sound insulation inlay panel shown in the figure comprises the following steps: S1, adding the injection material to the micro-foam injection molding device 32, and driving a lower mold 6 and an upper mold 7 to move to the bottom of the fixing frame 33 by the slide plate 383, and performing micro-foam injection molding, and at the same time limiting the slide plate 383 by the limiting mechanism 38 to prevent the slide plate 383 from moving, thereby improving the stability of the lower mold 6 and the upper mold 7 during injection molding, thereby improving the injection molding effect and the molding quality of the inlay panel, and S2, when the injection molding of one lower mold 6 and one upper mold 7 is completed, driving another lower mold 6 and another upper mold 7 to move to the fixing frame 3 by the slide plate 383. 3, and the lower mold 6 and the upper mold 7 after the injection molding are moved to the bottom of the opening and closing mechanism 5, S3, during the injection molding of another lower mold 6 and another upper mold 7, the cooling mechanism 4 is used to cool and mold the injection material in the lower mold 6 and the upper mold 7 below the opening and closing mechanism 5, so as to improve the efficiency of the injection molding process, and then improve the production efficiency of the inlaid decorative plate, S4, after the injection material in the lower mold 6 and the upper mold 7 is cooled and molded, the opening and closing mechanism 5 can drive the upper mold 7 to open, so as to facilitate the demolding of the molded inlaid decorative plate, S5, after the demolding is completed, the opening and closing mechanism 5 drives the upper mold 7 to close the mold with the lower mold 6, and repeat the above steps.

[0023] Reference Figures 1 to 5, including a base 1, a fixing box 2, an injection molding mechanism 3, a cooling mechanism 4, an opening and closing mechanism 5, two lower molds 6 and two upper molds 7, the fixing box 2 is fixedly installed on the base 1, the base 1 is used to support and fix the fixing box 2, the two lower molds 6 are fixedly installed on the injection molding mechanism 3, the two upper molds 7 can be slidably installed on the two lower molds 6 respectively, by setting the two lower molds 6 and the two upper molds 7, it can be achieved that during the cooling and molding process of one lower mold 6 and one upper mold 7, the other lower mold 6 and the other upper mold 7 can continue to be injected, thereby improving the production efficiency of the inlaid decorative plate, the injection molding mechanism 3 is fixedly installed on the fixing box 2, the injection molding mechanism 3 is used to perform injection molding between the lower mold 6 and the upper mold 7, and can switch injection molding between the two groups of lower molds 6 and the upper mold 7, the cooling mechanism 4 is fixedly installed on the base 1, the cooling mechanism 4 is fixedly installed on the base 1, and the cooling mechanism 4 is fixedly installed on the base 1. The mechanism 4 is used to cool the material after injection molding. Through the cooling mechanism 4, the cooling effect and cooling efficiency of injection molding can be improved, and the two groups of lower molds 6 and upper molds 7 can be cooled separately. The opening and closing mechanism 5 is fixedly installed on the fixed box 2. The opening and closing mechanism 5 is used to open and close the lower mold 6 and the upper mold 7. Through the opening and closing mechanism 5, it is convenient to demold the molded decorative panel and improve the tightness of the lower mold 6 and the upper mold 7 when they are closed. The injection molding mechanism 3 includes a slide plate 35 and a limiting mechanism 38. The slide plate 35 can be slidably installed on the fixed box 2. The slide plate 35 is used to drive the lower mold 6 and the upper mold 7 to move, so as to adjust the positions of the two groups of lower molds 6 and the upper mold 7. The limiting mechanism 38 is fixedly installed on the fixed box 2. The limiting mechanism 38 is used to limit the slide plate 35 to avoid the lower mold 6 and the upper mold 7 from offset during injection molding, thereby improving the injection molding effect.

[0024] Reference Figure 1 and Figure 6 The injection molding mechanism 3 also includes a support frame 31, a micro-foam injector 32 and a fixed frame 33. The support frame 31 is fixedly installed on the base 1, and the base 1 supports and fixes the support frame 31. The micro-foam injector 32 is fixedly installed on the support frame 31. The micro-foam injector 32 is a prior art and can perform micro-foam injection molding. The fixed frame 33 is fixedly installed on the fixed box 2. Through the fixed frame 33, the lower mold 6 and the upper mold 7 can maintain good sealing during injection molding to avoid leakage during the injection molding process. A through hole is opened on the fixed frame 33, and the through hole is connected to the output end of the micro-foam injector 32. Through the opened through hole, the micro-foam injector 32 can inject the injection material into between the lower mold 6 and the upper mold 7.

[0025] Reference Figures 4 to 6The injection molding mechanism 3 also includes an electric slide rail 34 and a T-block 36. The electric slide rail 34 is fixedly installed on the fixed box 2. By starting the electric slide rail 34, the slide plate 35 can be driven to move. The slide plate 35 is slidably connected to the electric slide rail 34. The slide plate 35 is fixedly connected to the two lower molds 6. Through the movement effect of the slide plate 35, the two lower molds 6 are driven to move, thereby driving the two upper molds 7 to move. The T-block 36 is fixedly installed on the upper mold 7. A T-slot 37 is opened on the fixed frame 33, and the T-slot 37 is slidably connected to the T-block 36. The upper mold 7 is positioned and guided by the T-block 36 and the T-slot 37, and the smoothness of the movement of the upper mold 7 is improved.

[0026] Reference Figure 7 and Figure 8 The limiting mechanism 38 includes a rotating shaft 381, a two-way telescopic rod 382, ​​two sliders 383 and a motor 386. The rotating shaft 381 can be rotatably installed on the fixed box 2. The rotating effect of the rotating shaft 381 can drive the two-way telescopic rod 382 to rotate. The middle part of the two-way telescopic rod 382 is fixedly connected to the rotating shaft 381. The two-way telescopic rod 382 is a prior art, and its two ends can be retracted toward the middle or extended outward. The two ends of the two-way telescopic rod 382 are respectively hinged to the two sliders 383. Through the rotation effect of the two-way telescopic rod 382, ​​the two sliders 383 can be driven to move in opposite directions. The two sliders 383 can be slidably installed on the fixed box 2. Through the sliding effect of the slider 383, the wedge block 385 can be engaged or released with the slide plate 35. The motor 386 is fixedly installed on the base 1, and the output shaft of the motor 386 is fixedly connected to the rotating shaft 381. By starting the motor 386, the rotating shaft 381 can be driven to rotate.

[0027] Reference Figure 7 and Figure 8 The limiting mechanism 38 also includes a wedge block 385, which is connected to the slider 383 via a spring 384, and the wedge block 385 is slidably connected to the slider 383. Through the elastic force of the spring 384, the wedge block 385 always remains engaged with the slider 35 without being affected by external force, thereby limiting the slider 35 so that the lower mold 6 and the upper mold 7 remain fixed. The slider 35 is provided with grooves 387, and there are two grooves 387 symmetrically distributed. The set grooves 387 facilitate the switching of the positions of the two sliders 383.

[0028] Reference Figures 9 to 11The cooling mechanism 4 includes a sleeve 43, a sphere 44, a cylindrical rod 45, a ring 46 and two circular tubes 48. The sleeve 43 is fixedly mounted on the fixed box 2. The sphere 44 and the circular ring 46 are connected by the cylindrical rod 45, and the cylindrical rod 45 penetrates the fixed box 2. The moving effect of the circular ring 46 can drive the cylindrical rod 45 to move, thereby driving the sphere 44 to move, so that the sphere 44 can block or open one end of a circular tube 48. The two circular tubes 48 are fixedly mounted on both sides of the fixed box 2, and one circular tube 48 is slidably connected to the circular ring 46. The circular ring 46 is connected to the fixed box 2 by a reset spring 47. Through the elastic force of the reset spring 47, the circular ring 46 always keeps driving the sphere 44 to block the circular tube 48 without being affected by external force.

[0029] Reference Figure 1 , Figure 2 and Fig.12 The cooling mechanism 4 also includes a cooling water tank 41, a U-shaped ferrule 1 49, a U-shaped ferrule 2 410 and a collecting box 411. The cooling water tank 41 is fixedly mounted on the base 1. Cooling water is stored in the cooling water tank 41. The cooling water tank 41 is connected to the sleeve 43 through a delivery pipe 42. The cooling water in the cooling water tank 41 can be delivered to the sleeve 43 through the delivery pipe 42. The collecting box 411 is fixedly mounted on the base 1, and the collecting box 411 is connected to another circular tube 48 through a connecting pipe 412. The water in another circular tube 48 is delivered to the collecting box 411 through the connecting pipe 412. The collecting box 411 is used to collect the water discharged after the lower mold 6 is cooled. The U-shaped ferrule 1 49 and the U-shaped ferrule 2 410 are both fixedly mounted on the lower mold 6, and a water inlet and a water outlet are respectively provided on both sides of the lower mold 6. The cooling water passes through the water inlet and enters the lower mold 6 to cool the injection molding material, and then is discharged through the water outlet. The water inlet and the water outlet correspond to the U-shaped ferrule 1 49 and the U-shaped ferrule 2 410 respectively. One side of the U-shaped ferrule 1 49 is an inclined surface, and one side of the U-shaped ferrule 2 410 is a straight surface. The U-shaped ferrule 1 49 is plugged into a round tube 48, and the U-shaped ferrule 1 49 is plugged into a round tube 48 so that the water inlet corresponds to the round tube 48, and the U-shaped ferrule 1 49 squeezes the ring 46 to open the round tube 48, and the cooling water is transported to the lower mold 6. The U-shaped ferrule 2 410 is plugged into another round tube 48, and the U-shaped ferrule 2 410 is plugged into another round tube 48 so that the water outlet corresponds to the other round tube 48, thereby discharging the cooling water in the lower mold 6 into the collection box 411.

[0030] Reference Figure 2 and Fig.13The opening and closing mechanism 5 includes an electric telescopic rod 51 and a movable plate 52. The electric telescopic rod 51 is fixedly installed on the fixed box 2. By starting the electric telescopic rod 51, the movable plate 52 can be driven to move vertically. The movable plate 52 is fixedly installed at the output end of the electric telescopic rod 51, and a second T-slot 53 is provided on the movable plate 52. When the slide plate 35 drives the lower mold 6 and the upper mold 7 to move below the movable plate 52, the T-block 36 can be plugged into the second T-slot 53, so that the vertical movement effect of the movable plate 52 can drive the upper mold 7 to move vertically to open or close the mold, and the second T-slot 53 is slidably connected to the T-block 36.

[0031] The present invention can switch injection molding between two groups of upper molds and lower molds through the injection molding mechanism and cooling mechanism, so that in the process of cooling molding after injection molding of one group of upper molds and lower molds, the cooling speed and cooling effect can be improved, and the next product can continue to be injection molded, thereby improving the working efficiency of the injection molding device and further improving the production efficiency of the inlaid decorative panels. The present invention can limit the slide plate when driving the upper mold and the lower mold to move to the injection molding position through the limit mechanism, so that the upper mold and the lower mold can be kept fixed, avoiding the upper mold and the lower mold from shifting during the injection molding process, thereby improving the injection molding process effect of the injection molding device and improving the product quality of the molded inlaid decorative panels. The present invention can automatically open the upper mold and the lower mold after the injection molding is completed through the opening and closing mechanism, thereby facilitating the demolding of the molded inlaid decorative panels and closing the molds after the demolding is completed, while improving the tightness after closing the molds, further improving the injection molding effect and production efficiency of the inlaid decorative panels.

[0032] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A micro-foam injection molding process for automobile sound insulation panels, characterized in that: The method comprises the following steps: S1, adding the injection material to the micro-foam injection molding device (32), and driving a lower mold (6) and an upper mold (7) to move to the bottom of the fixed frame (33) through the slide plate (383) to perform micro-foam injection molding, and at the same time, limiting the slide plate (383) through the limiting mechanism (38) to prevent the slide plate (383) from moving; S2. When the injection molding of one lower mold (6) and one upper mold (7) is completed, the slide plate (383) drives another lower mold (6) and another upper mold (7) to move to the bottom of the fixed frame (33) for injection molding, and moves the lower mold (6) and the upper mold (7) that have been injected to the bottom of the opening and closing mechanism (5); S3, during the injection molding process of another lower mold (6) and another upper mold (7), the cooling mechanism (4) is used to cool and mold the injection molding material in the lower mold (6) and the upper mold (7) below the opening and closing mechanism (5); S4, after the injection molding materials in the lower mold (6) and the upper mold (7) are cooled and molded, the opening and closing mechanism (5) can drive the upper mold (7) to open, so as to facilitate demoulding of the molded decorative panel; S5, after demoulding is completed, the opening and closing mechanism (5) drives the upper mold (7) and the lower mold (6) to close the mold, and the above steps are repeated; The invention comprises a base (1), a fixing box (2), an injection molding mechanism (3), a cooling mechanism (4), an opening and closing mechanism (5), two lower molds (6) and two upper molds (7), wherein the fixing box (2) is fixedly mounted on the base (1), the two lower molds (6) are fixedly mounted on the injection molding mechanism (3), the two upper molds (7) are respectively slidably mounted on the two lower molds (6), the injection molding mechanism (3) is fixedly mounted on the fixing box (2), the injection molding mechanism (3) is used for performing injection molding between the lower mold (6) and the upper mold (7), and the cooling mechanism (4) is fixedly mounted on the base (1). The cooling mechanism (4) is used to cool the material after injection molding. The opening and closing mechanism (5) is fixedly mounted on the fixed box (2). The opening and closing mechanism (5) is used to open and close the lower mold (6) and the upper mold (7). The injection molding mechanism (3) comprises a slide plate (35) and a limiting mechanism (38). The slide plate (35) is slidably mounted on the fixed box (2). The slide plate (35) is used to drive the lower mold (6) and the upper mold (7) to move. The limiting mechanism (38) is fixedly mounted on the fixed box (2). The limiting mechanism (38) is used to limit the slide plate (35).

2. The micro-foam injection molding process for automobile sound insulation inlay according to claim 1, characterized in that: The injection molding mechanism (3) further comprises a support frame (31), a micro-foaming injector (32) and a fixing frame (33); the support frame (31) is fixedly mounted on the base (1); the micro-foaming injector (32) is fixedly mounted on the support frame (31); the fixing frame (33) is fixedly mounted on the fixing box (2); a through hole is formed on the fixing frame (33); the through hole is connected to an output end of the micro-foaming injector (32).

3. The micro-foam injection molding process for automobile sound insulation inlay according to claim 2, characterized in that: The injection molding mechanism (3) further comprises an electric slide rail (34) and a T-block (36); the electric slide rail (34) is fixedly mounted on the fixing box (2); the slide plate (35) is slidably connected to the electric slide rail (34); the slide plate (35) is fixedly connected to the two lower molds (6); the T-block (36) is fixedly mounted on the upper mold (7); a T-slot 1 (37) is provided on the fixing frame (33); and the T-slot 1 (37) is slidably connected to the T-block (36).

4. The micro-foam injection molding process for automobile sound insulation panels according to claim 1, characterized in that: The limiting mechanism (38) comprises a rotating shaft (381), a bidirectional telescopic rod (382), two sliders (383) and a motor (386); the rotating shaft (381) is rotatably mounted on the fixed box (2); the middle portion of the bidirectional telescopic rod (382) is fixedly connected to the rotating shaft (381); both ends of the bidirectional telescopic rod (382) are respectively hinged to the two sliders (383); the two sliders (383) are both slidably mounted on the fixed box (2); the motor (386) is fixedly mounted on the base (1); and the output shaft of the motor (386) is fixedly connected to the rotating shaft (381).

5. The micro-foam injection molding process for automobile sound insulation inlay according to claim 4, characterized in that: The limiting mechanism (38) further comprises a wedge block (385), wherein the wedge block (385) is connected to the sliding block (383) via a spring (384), and the wedge block (385) is slidably connected to the sliding block (383), and a groove (387) is provided on the sliding block (35).

6. The micro-foam injection molding process for automobile sound insulation inlay according to claim 1, characterized in that: The cooling mechanism (4) comprises a sleeve (43), a sphere (44), a cylindrical rod (45), a ring (46) and two circular tubes (48); the sleeve (43) is fixedly mounted on the fixed box (2); the sphere (44) and the ring (46) are connected via the cylindrical rod (45), and the cylindrical rod (45) passes through the fixed box (2); the two circular tubes (48) are respectively fixedly mounted on two sides of the fixed box (2), and one circular tube (48) is slidably connected to the ring (46); the ring (46) and the fixed box (2) are connected via a return spring (47).

7. The micro-foam injection molding process for automobile sound insulation inlay according to claim 1, characterized in that: The cooling mechanism (4) further comprises a cooling water tank (41), a U-shaped ferrule 1 (49), a U-shaped ferrule 2 (410) and a collecting box (411); the cooling water tank (41) is fixedly mounted on the base (1); the cooling water tank (41) and the sleeve (43) are connected via a delivery pipe (42); the collecting box (411) is fixedly mounted on the base (1); and the collecting box (411) and another circular tube (48) are connected via a connection. The U-shaped ferrule 1 (49) and the U-shaped ferrule 2 (410) are connected to the lower mold (6), and the lower mold (6) is provided with a water inlet and a water outlet on both sides, respectively, and the water inlet and the water outlet correspond to the U-shaped ferrule 1 (49) and the U-shaped ferrule 2 (410) respectively, the U-shaped ferrule 1 (49) is plugged into a round tube (48), and the U-shaped ferrule 2 (410) is plugged into another round tube (48).

8. The micro-foam injection molding process for automobile sound insulation inlay according to claim 1, characterized in that: The opening and closing mechanism (5) comprises an electric telescopic rod (51) and a movable plate (52), wherein the electric telescopic rod (51) is fixedly mounted on the fixed box (2), and the movable plate (52) is fixedly mounted on the output end of the electric telescopic rod (51), and a second T-shaped slot (53) is provided on the movable plate (52), and the second T-shaped slot (53) is slidably connected to the T-shaped block (36).

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