Injection molding equipment and injection molding method for inner protective plate of automobile door

Abstract

The invention discloses injection molding equipment and an injection molding method for an inner protective plate of an automobile door, and relates to the technical field of production of inner protective plates of automobile doors. A support is fixed to the lower side of the installation box, a moving assembly is installed on the upper side of the support, a sealing assembly is installed on the upper side of the installation box, the sealing assembly is connected with the moving assembly, a water storage assembly is installed on the rear side of the installation box, a cooling assembly is installed on the rear side of the water storage assembly, and a water injection assembly is installed on the left side of the installation box. The water injection assembly is connected with the water storage assembly; and the forming assembly comprises a forming plate, a connecting disc, a T-shaped block, a spring, a cooling cavity and a flow guide groove, the forming plate is arranged in the mounting box, an opening is formed in the lower end of the mounting box, the connecting disc is slidably connected into the opening, the cooling speed can be effectively increased, meanwhile, the formed inner protection plate can be rapidly taken out, and the phenomenon of top whitening is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of automobile door inner guard plate production, in particular to an injection molding device and an injection molding method for automobile door inner guard plates. Background Art

[0002] The inner door guard panels of automobiles include left and right front door guard panels, and left and right rear door guard panels. They are mainly used to cover metal door panels, provide a beautiful appearance, and meet the requirements of ergonomics, comfort, functionality and convenience. They provide appropriate energy absorption protection in case of side collisions and shielding against noise outside the car. The guard panels on the lower side of the automobile windows are generally called upper guard panels. Upper guard panels are usually divided into hard and soft ones. Soft upper guard panels are usually composed of a skin, a foaming layer and a frame. The surface can be made by positive mold vacuum forming or manual wrapping. For mid-to-high-end cars with high requirements on appearance such as leather grain and rounded corners, slush molding or negative mold vacuum forming is usually used: the hard upper guard plate is usually made by injection molding. When the injection molding is completed and the material is taken out, it is necessary to wait for a certain period of time and wait for the molded object to cool before it can be taken out. At present, it is generally cooled naturally, which is slow. In addition, the existing injection molding equipment mostly uses a pin to eject the molded inner guard plate from the injection molding equipment after the equipment is molded. However, this method has uneven force during ejection, which is prone to white top, affecting the quality of the inner guard plate. For this reason, we propose an injection molding device and injection molding method for automobile door inner guard plates. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide an injection molding device and an injection molding method for an automobile door inner guard plate, which can effectively increase the cooling speed and quickly remove the molded inner guard plate to avoid the occurrence of white top, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: an injection molding device for an inner door guard plate of an automobile, comprising a mounting box and a molding assembly; Installation box: a bracket is fixed on the lower side, a moving component is installed on the upper side of the bracket, a sealing component is installed on the upper side of the installation box, the sealing component is connected to the moving component, a water storage component is installed on the rear side of the installation box, a cooling component is installed on the rear side of the water storage component, a water injection component is installed on the left side of the installation box, and the water injection component is connected to the water storage component; Molding component: includes a molding plate, a connecting plate, a T-block, a spring, a cooling cavity and a guide groove. The molding plate is arranged inside the installation box. The lower end of the installation box is provided with an opening. The interior of the opening is slidably connected with a connecting plate. The lower end of the connecting plate is fixed with a T-block. The upper side of the T-block is fixed with evenly distributed springs. All springs are fixed to the lower side of the installation box. The interior of the lower box wall of the installation box is provided with a cooling cavity. The interior of the upper box wall of the installation box is provided with a guide groove. The guide groove is connected to the cooling cavity. The water injection component and the water storage component are both connected to the guide groove. The molding of the inner guard plate of the automobile door is facilitated by arranging the molding plate.

[0005] Furthermore, the sealing assembly includes a sealing plate, an injection molding tube and a stop valve. The sealing plate is placed on the upper side of the installation box, an injection molding hole is opened in the middle of the sealing plate, an injection molding tube is fixed inside the injection molding hole, and a stop valve is installed on the circumferential surface of the injection molding tube. The installation box is sealed by setting the sealing assembly.

[0006] Furthermore, the water storage assembly includes a return pipe, a water tank and a temperature sensor. The water tank is fixed to the rear side of the installation box, and a return pipe is fixed inside the return port arranged on the right side of the water tank. The front end of the return pipe is fixed to the right side of the installation box, and the return pipe is communicated with the inner cavity of the guide groove. An installation hole is opened on the upper side of the water tank, and a temperature sensor is installed inside the installation hole. The temperature sensor is electrically connected to an external PLC controller in a bidirectional manner, and the water required for cooling is stored by setting a water tank.

[0007] Furthermore, the cooling component includes a semiconductor refrigeration sheet, a mounting frame and a heat dissipation fan. A groove is provided on the rear side of the water tank, a semiconductor refrigeration sheet is installed inside the groove, the heat dissipation end of the semiconductor refrigeration sheet is located outside the groove, and the cooling end of the semiconductor refrigeration sheet is located inside the groove. A mounting frame is fixed to the rear side of the water tank, and evenly distributed heat dissipation fans are installed inside the mounting frame. The input ends of the heat dissipation fan and the semiconductor refrigeration sheet are electrically connected to the output end of an external PLC controller. By setting up the cooling component, it is convenient to cool the water inside the water tank.

[0008] Furthermore, the water injection assembly includes a water outlet pipe, a water pump and a water inlet pipe. The water pump is installed on the left side of the installation box, the water outlet pipe is fixed inside the water inlet of the water pump, the rear end of the water outlet pipe is fixed to the inner protection of the water outlet set on the left side of the water tank, the water inlet pipe is fixed inside the water outlet of the water pump, the front end of the inlet pipe is fixed on the left side of the water tank, the water inlet pipe is communicated with the guide groove, the input end of the water pump is electrically connected to the output end of the external PLC controller, and the cooled water is injected into the interior of the guide groove by setting the water injection assembly.

[0009] Furthermore, the toggle assembly includes a fixing bar, a T-shaped guide bar, a first tooth plate, a first gear, a second gear, a connecting bar and a second tooth plate, two corresponding fixing bars are fixed on the left and right sides of the T-block, the first tooth plate is fixed on the side of the fixing bar, a T-shaped slide groove is provided on the side of the fixing bar, the T-shaped slide groove is internally slidably connected with a T-shaped guide bar, the two T-shaped guide bars are respectively fixed on the left and right sides of the installation box, the left and right sides of the installation box are rotatably connected with the first gear and the second gear, the first gear and the second gear are meshed, the first tooth plate is meshed with the first gear, and the left and right sides of the sealing plate are fixed with two corresponding connecting strips, the rear side of the connecting bar is fixed with a second tooth plate, and the two second tooth plates are respectively meshed with the two second gears, and by setting the toggle assembly, the user will also drive the forming plate to move during the process of adjusting the position of the sealing plate.

[0010] Furthermore, the moving component includes a mounting frame and a hydraulic rod. The mounting frame is fixed on the upper side of the bracket. Two corresponding hydraulic rods are installed on the upper side of the inside of the mounting frame. The telescopic arms of the two hydraulic rods are fixed on the upper side of the sealing plate. The input end of the hydraulic rod is electrically connected to the output end of the external PLC controller. The sealing plate is driven to move by setting the moving component.

[0011] Furthermore, four corresponding limiting plates are fixed on the upper side of the installation box, and four corresponding clamping holes are opened on the edge of the sealing plate. The limiting plates are clamped inside the clamping holes. By setting the limiting plates, the stability of the sealing plate can be effectively guaranteed.

[0012] Furthermore, a water filling port is provided on the upper side of the water storage tank, and a sealing cover is connected to the inner thread of the water filling port, so that the water storage tank is sealed by setting the sealing cover.

[0013] The injection molding method of an injection molding device for an automobile door inner guard plate according to any one of claims 1 to 9 comprises the following steps: S1: First, open the stop valve, then inject the melted material into the installation box through the injection tube and above the molding plate, and then close the stop valve; S2: After the stop valve is closed, the semiconductor refrigeration sheet and all the cooling fans are started. After the semiconductor refrigeration sheet is started, the water inside the water storage tank is cooled. After all the cooling fans are started, the semiconductor refrigeration sheet is cooled. After the water inside the water storage tank is cooled, the water pump is started to inject the cooled water into the guide groove. The cooling water entering the guide groove will flow downward into the cooling cavity, and then flow back to the water storage tank through the return pipe. In this process, the materials inside the installation box can be quickly cooled. S3: After the material inside the installation box is cooled, the two hydraulic rods are controlled to contract so that the sealing plate moves upward to open the opening on the upper side of the installation box. In the process of the sealing plate moving upward, the two connecting strips will also be driven to move upward. The two connecting strips move upward to drive the two second tooth plates to move upward and drive the two second gears to rotate. The rotation of the two second gears drives the two first gears to rotate. The rotation of the two first gears drives the two first tooth plates to move upward. The two first tooth plates move upward to drive the two fixing strips to move upward. The two fixing strips move upward to drive the T-block to move upward to extrude the formed plate out of the installation box. Then, the formed automobile door inner guard plate on the upper side of the formed plate can be easily removed to complete the production.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the injection molding equipment and injection molding method for the inner guard plate of the automobile door have the following advantages: By setting a cooling component, the semiconductor refrigeration sheet can be started after the materials required for producing the inner guard plate of the automobile door are injected into the interior of the installation box. After the semiconductor refrigeration sheet is started, the water inside the water storage tank is cooled. After the water inside the water storage tank is cooled, the water pump is started to inject the cooled water into the interior of the guide groove. The cooling water entering the interior of the guide groove will flow downward into the interior of the cooling cavity, and then flow back to the interior of the water storage tank through the reflux pipe. In this process, the materials inside the installation box can be quickly cooled, thereby effectively improving the cooling efficiency. 2. By setting the cooling fans, all cooling fans can be started during the operation of the semiconductor refrigeration piece. After all cooling fans are started, the heat generated during the operation of the semiconductor refrigeration piece can be quickly extracted, thereby improving the heat dissipation efficiency of the semiconductor refrigeration piece and avoiding damage to the semiconductor refrigeration piece during operation; 3. By setting a moving assembly, after the material inside the installation box is cooled, the two hydraulic rods are controlled to contract so that the sealing plate moves upward to open the opening on the upper side of the installation box. In the process of the sealing plate moving upward, the two connecting strips will also be driven to move upward. The two connecting strips move upward to drive the two second tooth plates to move upward to drive the two second gears to rotate. The rotation of the two second gears drives the two first gears to rotate. The rotation of the two first gears drives the two first tooth plates to move upward. The two first tooth plates move upward to drive the two fixing strips to move upward. The two fixing strips move upward to drive the T-block to move upward to squeeze the forming plate out of the installation box. Then, the automobile door inner guard plate formed on the upper side of the forming plate can be removed very conveniently. In this case, the top whitening can be effectively avoided. 4. By setting the limit plate, when the sealing plate is fitted with the installation box, the four card holes on the edge of the sealing plate will be connected to the limit plate. After connection, the temperature of the sealing plate can be kept high, which can effectively avoid the shaking of the sealing plate during injection molding, affecting the injection molding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the front structure of the present invention; Figure 2 For the present invention Figure 2 A in the middle is an enlarged view; Figure 3 A schematic diagram of the sealing assembly structure of the present invention; Figure 4 It is a schematic diagram of the structure of the water storage component of the present invention.

[0016] In the figure: 1 installation box, 2 molding assembly, 21 molding plate, 22 connecting plate, 23 T-block, 24 spring, 25 cooling chamber, 26 guide groove, 3 sealing assembly, 31 sealing plate, 32 injection tube, 33 stop valve, 4 water storage assembly, 41 return pipe, 42 water storage tank, 43 temperature sensor, 5 cooling assembly, 51 semiconductor refrigeration plate, 52 installation frame, 53 cooling fan, 6 water injection assembly, 61 water outlet pipe, 62 water pump, 63 water inlet pipe, 7 toggle assembly, 71 fixing bar, 72 T-shaped guide bar, 73 first tooth plate, 74 first gear, 75 second gear, 76 connecting bar, 77 second tooth plate, 8 moving assembly, 81 mounting frame, 82 hydraulic rod, 9 bracket, 10 limit plate, 11 sealing cover. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-4 ,This embodiment provides a technical solution: an injection molding device for an automobile door inner guard plate, comprising a mounting box 1 and a molding assembly 2; Installation box 1: a bracket 9 is fixed on the lower side, a moving component 8 is installed on the upper side of the bracket 9, a sealing component 3 is installed on the upper side of the installation box 1, and the sealing component 3 is connected to the moving component 8. A water storage component 4 is installed on the rear side of the installation box 1, and a cooling component 5 is installed on the rear side of the water storage component 4. A water injection component 6 is installed on the left side of the installation box 1, and the water injection component 6 is connected to the water storage component 4. The sealing component 3 includes a sealing plate 31, an injection molding tube 32 and a stop valve 33. A sealing plate 31 is placed on the upper side of the installation box 1, an injection molding hole is opened in the middle of the sealing plate 31, an injection molding tube 32 is fixed inside the injection molding hole, and a stop valve 33 is installed on the circumferential surface of the injection molding tube 32. The water storage component 4 includes a reflux pipe 41, a water storage tank 42 and a temperature sensor 43. A water storage tank 42 and a temperature sensor 43 are fixed on the rear side of the installation box 1. A water tank 42, a reflux port arranged on the right side of the water storage tank 42 is provided with a reflux pipe 41 fixed inside, the front end of the reflux pipe 41 is fixed on the right side of the mounting box 1, the reflux pipe 41 is communicated with the inner cavity of the guide groove 26, a mounting hole is provided on the upper side of the water storage tank 42, a temperature sensor 43 is installed inside the mounting hole, the temperature sensor 43 is bidirectionally electrically connected with the external PLC controller, the cooling assembly 5 comprises a semiconductor cooling sheet 51, a mounting frame 52 and a heat dissipation fan 53, a groove is provided on the rear side of the water storage tank 42, a semiconductor cooling sheet 51 is installed inside the groove, the heat dissipation end of the semiconductor cooling sheet 51 is located outside the groove, and the cooling end of the semiconductor cooling sheet 51 is located inside the groove, a mounting frame 52 is fixed on the rear side of the water storage tank 42, and a mounting frame 52 is installed inside the mounting frame 52 There are evenly distributed cooling fans 53, and the input ends of the cooling fans 53 and the semiconductor refrigeration sheet 51 are electrically connected to the output end of the external PLC controller. The water injection component 6 includes a water outlet pipe 61, a water pump 62 and a water inlet pipe 63. The water pump 62 is installed on the left side of the installation box 1. The water outlet pipe 61 is fixed inside the water inlet of the water pump 62. The rear end of the water outlet pipe 61 is fixed to the inner protection of the water outlet set on the left side of the water storage tank 42. The water inlet pipe 63 is fixed inside the water outlet of the water pump 62. The front end of the air inlet pipe 63 is fixed to the left side of the water storage tank 42. The water inlet pipe 63 is communicated with the guide groove 26. The input end of the water pump 62 is electrically connected to the output end of the external PLC controller. The toggle component 7 includes a fixing bar 71, a T-shaped guide bar 72, a first tooth plate 73, a first gear 74, a first gear 75, a first gear 76, a first gear 77, a first gear 78, a first gear 79, a first gear 80, a first gear 81, a first gear 82, a first gear 83, a first gear 84, a first gear 85, a first gear 86, a first gear 87, a first gear 88, a first gear 89, a first gear 90, a first gear 91, a first gear 92, a first gear 93, a first gear 94, a first gear 95, a first gear 96, a first gear 97, a first gear 98, a first gear 99, a first gear 91, a first gear 99, a first gear 91, a first gear 99, a first gear 91, a first gear 99, a first gear 91, a Two gears 75, a connecting strip 76 and a second toothed plate 77, two corresponding fixing strips 71 are fixed on the left and right sides of the T-block 23, a first toothed plate 73 is fixed on the side of the fixing strip 71, a T-shaped slide groove is provided on the side of the fixing strip 71, a T-shaped guide strip 72 is slidably connected inside the T-shaped slide groove, and the two T-shaped guide strips 72 are respectively fixed on the left and right sides of the installation box 1, and the left and right sides of the installation box 1 are rotatably connected with the first gear 74 and the second gear 75, the first gear 74 and the second gear 75 are meshed, the first toothed plate 73 is meshed with the first gear 74, and two corresponding connecting strips 76 are fixed on the left and right sides of the sealing plate 31, and a second toothed plate 77 is fixed on the rear side of the connecting strip 76, and the two second toothed plates 77 are respectively meshed with the two second gears 75.The moving assembly 8 includes a mounting frame 81 and a hydraulic rod 82. The mounting frame 81 is fixed on the upper side of the bracket 9. Two corresponding hydraulic rods 82 are installed on the upper side of the mounting frame 81. The telescopic arms of the two hydraulic rods 82 are fixed on the upper side of the sealing plate 31. The input end of the hydraulic rod 82 is electrically connected to the output end of the external PLC controller. The sealing plate 31 is driven to move by setting the moving assembly 8. The user can also drive the forming plate 21 to move in the process of adjusting the position of the sealing plate 31 by setting the toggle assembly 7. The cooled water is injected into the interior of the guide groove 26 by setting the water injection assembly 6. The water inside the water storage tank 42 is conveniently cooled by setting the cooling assembly 5. The water required for cooling is stored by setting the water storage tank 42. The installation box 1 is sealed by setting the sealing assembly 3. Molding component 2: includes a molding plate 21, a connecting plate 22, a T-block 23, a spring 24, a cooling cavity 25 and a guide groove 26. The molding plate 21 is arranged inside the installation box 1. The lower end of the installation box 1 is provided with an opening, and the connecting plate 22 is slidably connected inside the opening. The lower end of the connecting plate 22 is fixed with a T-block 23, and the upper side of the T-block 23 is fixed with evenly distributed springs 24. All springs 24 are fixed to the lower side of the installation box 1. The interior of the lower box wall of the installation box 1 is provided with a cooling cavity 25, and the interior of the upper box wall of the installation box 1 is provided with a guide groove 26, which is connected to the cooling cavity 25. The water injection component 6 and the water storage component 4 are both connected to the guide groove 26. The molding plate 21 is arranged to facilitate the molding of the inner guard plate of the automobile door.

[0019] Among them: four corresponding limit plates 10 are fixed on the upper side of the installation box 1, and four corresponding clamping holes are opened on the edge of the sealing plate 31. The limit plates 10 are clamped inside the clamping holes. By setting the limit plates 10, the stability of the sealing plate 31 can be effectively guaranteed.

[0020] Wherein: a water filling port is opened on the upper side of the water storage tank 42, and a sealing cover 11 is connected to the inner thread of the water filling port, and the water storage tank 42 is sealed by setting the sealing cover 11.

[0021] An injection molding method for an injection molding device for an automobile door inner guard plate according to any one of claims 1 to 9 comprises the following steps: S1: First, the stop valve 33 is opened, and then the melted material is injected into the interior of the installation box 1 through the injection tube 32 and positioned above the molding plate 21, and then the stop valve 33 is closed; S2: After the stop valve 33 is closed, the semiconductor refrigeration sheet 51 and all the heat dissipation fans 53 are started. After the semiconductor refrigeration sheet 51 is started, the water inside the water storage tank 42 is cooled. After all the heat dissipation fans 53 are started, the semiconductor refrigeration sheet 51 is dissipated. After the water inside the water storage tank 42 is cooled, the water pump 62 is started to inject the cooled water into the guide groove 26. The cooling water entering the guide groove 26 will flow downward into the cooling chamber 25, and then flow back to the water storage tank 42 through the reflux pipe 41. In this process, the material inside the installation box 1 can be quickly cooled. S3: After the material inside the installation box 1 is cooled, the two hydraulic rods 82 are controlled to contract so that the sealing plate 31 moves upward to open the opening on the upper side of the installation box 1. In the process of the sealing plate 31 moving upward, the two connecting strips 76 will also be driven to move upward. The two connecting strips 76 move upward to drive the two second tooth plates 77 to move upward to drive the two second gears 75 to rotate. The rotation of the two second gears 75 drives the two first gears 74 to rotate. The rotation of the two first gears 74 drives the two first tooth plates 73 to move upward. The two first tooth plates 73 move upward to drive the two fixing strips 71 to move upward. The two fixing strips 71 move upward to drive the T-block 23 to move upward to extrude the forming plate 21 out of the installation box 1. Then, the automobile door inner guard plate formed on the upper side of the forming plate 21 can be easily removed to complete the production.

[0022] It is worth noting that the external PLC controller disclosed in the above embodiments is specifically a Siemens S7-200, the hydraulic rod 82 can be freely configured according to actual conditions, the temperature sensor 43 can use the LSCI-TZ03 laser focusing infrared temperature sensor, the semiconductor refrigeration plate 51 can use the C1204 multi-stage semiconductor refrigeration plate, the water pump 62 can use the WQD6-12-0.55L1 water pump, the cooling fan 53 can use the AUX-APB30-BS exhaust fan, and the control switch group controls the operation of the hydraulic rod 82, the semiconductor refrigeration plate 51, the water pump 62 and the cooling fan 53 using methods commonly used in the prior art.

[0023] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An injection molding device for automobile door inner guard plate, characterized in that: It comprises an installation box (1) and a molding component (2); An installation box (1): a bracket (9) is fixed on the lower side, a moving component (8) is installed on the upper side of the bracket (9), a sealing component (3) is installed on the upper side of the installation box (1), the sealing component (3) is connected to the moving component (8), a water storage component (4) is installed on the rear side of the installation box (1), a cooling component (5) is installed on the rear side of the water storage component (4), and a water injection component (6) is installed on the left side of the installation box (1), the water injection component (6) is connected to the water storage component (4); A molding assembly (2): comprising a molding plate (21), a connecting plate (22), a T-shaped block (23), a spring (24), a cooling chamber (25) and a guide groove (26); the molding plate (21) is arranged inside the installation box (1); the lower end of the installation box (1) is provided with an opening, the interior of the opening is slidably connected with a connecting plate (22), the lower end of the connecting plate (22) is fixed with a T-shaped block (23), the upper side of the T-shaped block (23) is fixed with evenly distributed springs (24), all the springs (24) are fixed to the lower side of the installation box (1); the interior of the lower side box wall of the installation box (1) is provided with a cooling chamber (25), the interior of the upper side box wall of the installation box (1) is provided with a guide groove (26), the guide groove (26) is connected to the cooling chamber (25), and the water injection assembly (6) and the water storage assembly (4) are both connected to the guide groove (26).

2. The injection molding equipment for automobile door inner panel according to claim 1, characterized in that: The sealing assembly (3) comprises a sealing plate (31), an injection molding tube (32) and a stop valve (33); the sealing plate (31) is placed on the upper side of the installation box (1); an injection molding hole is opened in the middle of the sealing plate (31); an injection molding tube (32) is fixed inside the injection molding hole; and a stop valve (33) is installed on the circumferential surface of the injection molding tube (32).

3. The injection molding equipment for automobile door inner panel according to claim 1, characterized in that: The water storage assembly (4) comprises a return pipe (41), a water storage tank (42) and a temperature sensor (43); the water storage tank (42) is fixed to the rear side of the installation box (1); the return pipe (41) is fixed inside a return port provided on the right side of the water storage tank (42); the front end of the return pipe (41) is fixed to the right side of the installation box (1); the return pipe (41) is communicated with the inner cavity of the guide groove (26); a mounting hole is provided on the upper side of the water storage tank (42); a temperature sensor (43) is installed inside the mounting hole; the temperature sensor (43) is bidirectionally electrically connected to an external PLC controller.

4. The injection molding equipment for automobile door inner panel according to claim 3, characterized in that: The cooling assembly (5) comprises a semiconductor cooling sheet (51), a mounting frame (52) and a heat dissipation fan (53); a groove is provided on the rear side of the water storage tank (42); a semiconductor cooling sheet (51) is installed inside the groove; a heat dissipation end of the semiconductor cooling sheet (51) is located outside the groove; a cooling end of the semiconductor cooling sheet (51) is located inside the groove; a mounting frame (52) is fixed on the rear side of the water storage tank (42); evenly distributed heat dissipation fans (53) are installed inside the mounting frame (52); input ends of the heat dissipation fans (53) and the semiconductor cooling sheets (51) are electrically connected to output ends of an external PLC controller.

5. The injection molding equipment for automobile door inner panel according to claim 3, characterized in that: The water injection assembly (6) comprises a water outlet pipe (61), a water pump (62) and a water inlet pipe (63); the water pump (62) is installed on the left side of the installation box (1); the water outlet pipe (61) is fixed inside the water inlet of the water pump (62); the rear end of the water outlet pipe (61) is fixed to the inner cover of the water outlet arranged on the left side of the water storage tank (42); the water inlet pipe (63) is fixed inside the water outlet of the water pump (62); the front end of the air inlet pipe (63) is fixed to the left side of the water storage tank (42); the water inlet pipe (63) is communicated with the guide groove (26); and the input end of the water pump (62) is electrically connected to the output end of an external PLC controller.

6. The injection molding equipment for automobile door inner panel according to claim 1, characterized in that: The toggle assembly (7) comprises a fixing bar (71), a T-shaped guide bar (72), a first tooth plate (73), a first gear (74), a second gear (75), a connecting bar (76) and a second tooth plate (77). Two corresponding fixing bars (71) are fixed on the left and right sides of the T-shaped block (23). The first tooth plate (73) is fixed on the side of the fixing bar (71). A T-shaped slide groove is provided on the side of the fixing bar (71). The T-shaped guide bar (72) is slidably connected inside the T-shaped slide groove. The two T-shaped guide bars (72) are connected to each other. ) are respectively fixed on the left and right sides of the installation box (1), and the left and right sides of the installation box (1) are rotatably connected with a first gear (74) and a second gear (75), the first gear (74) and the second gear (75) are meshed with each other, and the first toothed plate (73) is meshed with the first gear (74), and the left and right sides of the sealing plate (31) are fixed with two corresponding connecting strips (76), and the rear side of the connecting strip (76) is fixed with a second toothed plate (77), and the two second toothed plates (77) are respectively meshed with the two second gears (75).

7. The injection molding equipment for automobile door inner panel according to claim 1, characterized in that: The moving assembly (8) comprises a mounting frame (81) and a hydraulic rod (82); the mounting frame (81) is fixed on the upper side of the bracket (9); two corresponding hydraulic rods (82) are installed on the upper side of the interior of the mounting frame (81); the telescopic arms of the two hydraulic rods (82) are fixed on the upper side of the sealing plate (31); and the input end of the hydraulic rod (82) is electrically connected to the output end of an external PLC controller.

8. The injection molding equipment for automobile door inner panel according to claim 2, characterized in that: Four corresponding limiting plates (10) are fixed on the upper side of the installation box (1), and four corresponding clamping holes are opened on the edge of the sealing plate (31), and the limiting plates (10) are clamped inside the clamping holes.

9. The injection molding equipment for automobile door inner panel according to claim 3, characterized in that: A water inlet is provided on the upper side of the water storage tank (42), and a sealing cover (11) is threadedly connected to the inside of the water inlet.

10. An injection molding method for an injection molding device for an automobile door inner panel according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: First, the stop valve (33) is opened, and then the melted material is injected into the interior of the installation box (1) through the injection tube (32) and positioned above the molding plate (21), and then the stop valve (33) is closed; S2: After the stop valve (33) is closed, the semiconductor refrigeration plate (51) and all the heat dissipation fans (53) are started. After the semiconductor refrigeration plate (51) is started, the water inside the water storage tank (42) is cooled. After all the heat dissipation fans (53) are started, the semiconductor refrigeration plate (51) is cooled. After the water inside the water storage tank (42) is cooled, the water pump (62) is started to inject the cooled water into the guide groove (26). The cooling water entering the guide groove (26) flows downward into the cooling chamber (25) and then flows back into the water storage tank (42) through the return pipe (41). In this process, the material inside the installation box (1) can be quickly cooled. S3: After the material inside the installation box (1) is cooled, the two hydraulic rods (82) are controlled to contract so that the sealing plate (31) moves upward to open the opening on the upper side of the installation box (1). In the process of the sealing plate (31) moving upward, the two connecting bars (76) are also driven to move upward. The two connecting bars (76) move upward to drive the two second tooth plates (77) to move upward to drive the two second gears (75) to rotate. The two second gears (75) rotate to drive the two first gears (74) to rotate. The two first gears (74) rotate to drive the two first tooth plates (73) to move upward. The two first tooth plates (73) move upward to drive the two fixing bars (71) to move upward. The two fixing bars (71) move upward to drive the T-block (23) to move upward to extrude the forming plate (21) out of the installation box (1). Then, the automobile door inner guard plate formed on the upper side of the forming plate (21) can be easily removed to complete the production.

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