Injection molding device for rear mudguard of electric vehicle

Abstract

The invention discloses an injection molding device for a rear fender of an electric vehicle, relates to the technical field of injection molding, and aims to overcome the defects that a traditional injection molding device for the rear fender of the electric vehicle is low in efficiency and difficult to meet large-scale production due to static injection molding, and is difficult to remove bubbles due to single vibration and easy to cause defects of products; the injection molding machine comprises an injection molding mechanism and an adjusting mechanism, and the injection molding machine comprises the injection molding mechanism and the adjusting mechanism. When rotating by 90 degrees each time, injection molding can be carried out on the uppermost telescopic rod to ensure that the movable mold is attached to the fixed mold, meanwhile, pressure relief is carried out on the lowermost telescopic rod, so that the discharging step is completed, equipment waiting is reduced, the product output quantity in unit time is increased, meanwhile, the fixed mold and the movable mold are in a continuous shaking state in the rotating process, and the production efficiency is improved. And through cooperation of centrifugal force and vibration force during rotation, bubbles are more effectively discharged, and the strength and the appearance quality of the fender are improved.

Description

Technical Field

[0001] This invention relates to the field of injection molding technology, and more specifically, to an injection molding device for a rear mudguard of an electric vehicle. Background Technology

[0002] With the booming development of the electric vehicle manufacturing industry, the rear mudguard of electric vehicles is a key component, and its production quality and efficiency directly affect the overall performance and market competitiveness of electric vehicles. At present, traditional injection molding equipment for electric vehicle rear mudguards has many limitations in the production process.

[0003] On the one hand, traditional equipment mostly adopts a static injection molding mode, and the production process is intermittent. After injection molding is completed, it is necessary to wait for the mold to cool down and manually remove the parts. The equipment has a long waiting time, which cannot achieve continuous production, resulting in low production efficiency and difficulty in meeting the needs of large-scale production. On the other hand, in the degassing stage, traditional equipment mainly relies on a single vibration method. This vibration method has a relatively simple force and is difficult to effectively remove some tiny or complex bubbles in the molten raw material. This can easily cause defects such as air holes and shrinkage in the mudguard, affecting the strength and appearance quality of the product. Moreover, the mold structure design and operation method of traditional equipment are not reasonable enough when demolding and removing parts. It usually requires workers to perform relatively complicated operations and remove parts from high places. This is not only labor-intensive but also poses certain safety hazards. At the same time, the high operation difficulty can also easily lead to damage to the mudguard during the removal process, increasing the product defect rate.

[0004] In view of this, we propose an injection molding device for the rear fender of an electric vehicle. Summary of the Invention

[0005] The purpose of this invention is to provide an injection molding device for the rear mudguard of electric vehicles, in order to solve the shortcomings of traditional injection molding devices for the rear mudguard of electric vehicles: low efficiency due to static injection molding, making it difficult to meet the needs of large-scale production; difficulty in defoaming by vibration alone, which easily leads to product defects; difficulty in demolding and removing parts; unreasonable operation; high labor intensity for workers, which in turn leads to an increased defect rate.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an injection molding device for a rear mudguard of an electric vehicle, comprising an injection molding mechanism and an adjustment mechanism, wherein the adjustment mechanism is disposed outside the injection molding mechanism;

[0007] The injection molding mechanism includes a protective component, a material storage component connected to the protective component, a first side plate located on the other side of the material storage component, a base plate connected to the first side plate and the protective component, a groove formed outside one of the base plates, a movable component, a mold assembly, a motor and a connecting pipe connected to the first side plate, wherein the material storage component is connected to the mold assembly through the connecting pipe, the number of movable components is several, all of the movable components are connected to the material storage component, the material storage component is connected to the mold assembly, and the mold assembly is connected to the movable component;

[0008] The regulating mechanism includes a sealing assembly, a pressure injection valve, a pressure relief valve, and telescopic rods connected to the sealing assembly. There are four telescopic rods, all of which are connected to the sealing assembly. The pressure injection valve and the pressure relief valve are both connected to an external pressure structure.

[0009] The protective component is connected to the external molten raw material, the storage component is connected to the protective component, the storage component is used to inject the molten raw material into the uppermost mold component, and the motor is used to drive the storage component to rotate.

[0010] This invention applies pressure to the uppermost telescopic rod each time it rotates 90 degrees to ensure the moving mold and fixed mold fit together. Simultaneously, it releases pressure to the lowermost telescopic rod, thus completing the unloading step. This makes the injection molding process continuous. While one mold completes injection molding, degassing, and demolding, other molds enter the injection station sequentially, reducing equipment waiting time and increasing the output per unit time. Furthermore, since the molten material needs to be rotated immediately after being injected into the fixed mold, and the fixed mold and moving mold are in a state of continuous vibration during the rotation, the device uses the centrifugal force and vibration force during rotation to more effectively remove air bubbles, improving the strength and appearance quality of the mudguard.

[0011] Preferably, one side of the protective component is connected to the storage component, the protective component is snapped onto one side of the storage component, the lower part of the protective component is fixedly connected to the base plate, a groove is provided on the upper part of the base plate connected to the protective component, and several movable components are fixedly connected to the outside of the storage component.

[0012] Preferably, the material storage assembly is connected to several connecting pipes, several movable components are fixedly connected to several mold assemblies, several mold assemblies are connected to the material storage assembly through several connecting pipes, the other side of the material storage assembly is snapped into a first side plate, the motor is fixedly connected to one side of the first side plate, the motor passes through the first side plate and is connected to the material storage assembly for transmission, and the first side plate is fixedly connected to another base plate through a frame.

[0013] Preferably, the upper side of the sealing assembly is connected to the pressure injection valve, the lower side of the sealing assembly is connected to the pressure relief valve, and the sealing assembly is connected to a plurality of telescopic rods;

[0014] The mold assembly is slidably connected to the other end of the telescopic rod.

[0015] Preferably, the protective assembly includes a second side plate, a connecting sleeve is snapped onto one side of the second side plate, a feed pipe is sleeved inside the connecting sleeve, the feed pipe is connected to an external melting raw material device, a plurality of toothed blocks are fixedly connected to one side of the second side plate, and the plurality of toothed blocks are evenly and equidistantly arranged outside the second side plate, and a bracket is fixedly connected to the other side of the second side plate.

[0016] The second side plate is fixedly connected to the base plate via a support frame, and the feed pipe is snapped onto one side of the storage assembly, and the feed pipe is connected to the storage assembly.

[0017] Preferably, the movable component includes a mounting plate, with two positioning brackets fixedly connected to both sides of the mounting plate. Four sliding grooves are provided on the top of the mounting plate, and two elastic telescopic rods are fixedly connected to each of the four sliding grooves. The two elastic telescopic rods located in the same sliding groove are fixedly connected to the same slider.

[0018] Preferably, a through hole is provided on the top of the mounting plate;

[0019] The mounting plate is fixedly connected to the outside of the material storage assembly via a positioning frame, the connecting pipe is located inside the through hole, and the other ends of several sliders are fixedly connected to the same mold assembly.

[0020] Preferably, the mold assembly includes a moving mold, a fixed mold is snapped into the lower part of the moving mold, and a lever is fixedly connected to one side of the fixed mold;

[0021] The push block overlaps with the toothed block, the lower part of the fixed mold is fixedly connected to the upper part of several sliders, and the upper part of the moving mold is slidably connected to the other end of the telescopic rod.

[0022] Preferably, the sealing assembly includes a sealing shell, which is annular, and has a connecting groove inside. Four connecting blocks are slidably connected in the connecting groove, and sealing plates are snapped onto both sides of the four connecting blocks. The sealing plates are slidably connected in the connecting groove. Connecting holes are provided on one side and below the connecting blocks. A sealing gasket is provided inside the sealing shell.

[0023] The connecting hole is connected to the telescopic rod. The uppermost connecting block is connected to the pressure injection valve through the connecting hole, and the lowermost connecting block is connected to the pressure relief valve through the connecting hole. The sealing gasket can prevent gas leakage or gas from entering the telescopic rod when the connecting block rotates inside the sealing shell. The sealing shell is connected to the pressure injection valve and the pressure relief valve respectively.

[0024] Preferably, the elastic telescopic rod is used to ensure that the slider can quickly return to its original position after being squeezed and misaligned, and the pusher block is used to contact the tooth block to squeeze the fixed mold and the moving mold to move.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. This invention, through the design of movable components and mold components, ensures that the uppermost telescopic rod is pressurized each time it rotates 90 degrees, guaranteeing the fit between the moving mold and the fixed mold. Simultaneously, it releases pressure on the lowermost telescopic rod, thus completing the unloading step. This makes the injection molding process continuous. While one mold completes injection molding, de-bubbling, and demolding, other molds sequentially enter the injection station, reducing equipment waiting time and increasing the output per unit time. Furthermore, since the molten material needs to be rotated immediately after being injected into the fixed mold, and the fixed mold and moving mold are in a state of continuous vibration during the rotation, the device effectively removes air bubbles through the combined centrifugal force and vibration force during rotation, improving the strength and appearance quality of the mudguard.

[0027] 2. The present invention also designs a motor-driven material storage component. This device injects molten raw materials into the material storage component. As the material storage component rotates, the raw materials can be more evenly distributed within the material storage component. When injecting into the mold, it can ensure that the raw materials are more evenly filled into all parts of the mold cavity, avoiding local underfilling or overfilling, and significantly improving the dimensional accuracy and shape consistency of the mudguard.

[0028] 3. The present invention also makes the overall structure of the equipment more compact by designing the material storage component and the mold component, and the rotation mode design. The various components are rationally arranged around the material storage component, the moving mold and the fixed mold, which reduces the footprint of the equipment. More production equipment can be arranged in a limited production space, improving the space utilization rate. In addition, since the fixed mold and the moving mold can complete multiple processes in sequence during the rotation process, the number of fixed molds and moving molds required at the same time is reduced. Compared with the traditional process that requires multiple sets of fixed molds and moving molds to perform injection molding, de-bubbling and demolding, the improved device can reduce the manufacturing and maintenance costs of fixed molds and moving molds. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the injection molding mechanism of the present invention;

[0031] Figure 3 This is a schematic cross-sectional view of the protective component of the present invention;

[0032] Figure 4 This is a schematic diagram of the adjustment mechanism structure of the present invention;

[0033] Figure 5 This is a schematic cross-sectional view of the sealing assembly of the present invention;

[0034] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle;

[0035] Figure 7 This is a schematic diagram of the mold assembly structure of the present invention;

[0036] Figure 8 This is a schematic diagram of the active component structure of the present invention;

[0037] Figure 9 This is a schematic diagram of the material storage component structure of the present invention.

[0038] Explanation of the labels in the diagram:

[0039] 1. Injection molding mechanism; 2. Adjustment mechanism;

[0040] 11. Protective component; 12. Material storage component; 13. Base plate; 14. Groove; 15. Movable component; 16. Mold component; 17. Motor; 18. Connecting pipe; 19. First side plate;

[0041] 21. Sealing assembly; 22. Pressure injection valve; 23. Pressure relief valve; 24. Telescopic rod;

[0042] 111. Second side plate; 112. Connecting sleeve; 113. Tooth block; 114. Feed pipe; 115. Support frame;

[0043] 151. Mounting plate; 152. Slide groove; 153. Elastic telescopic rod; 154. Slider; 155. Positioning bracket; 156. Through hole;

[0044] 161. Moving mold; 162. Fixed mold; 163. Push block;

[0045] 211. Sealing shell; 212. Connecting groove; 213. Connecting block; 214. Sealing plate; 215. Sealing gasket; 216. Connecting hole. Detailed Implementation

[0046] like Figures 1 to 9 As shown, the present invention relates to an injection molding device for a rear mudguard of an electric vehicle, comprising an injection molding mechanism 1 and an adjustment mechanism 2, wherein the adjustment mechanism 2 is disposed outside the injection molding mechanism 1;

[0047] Injection mechanism 1 includes a protective component 11, a material storage component 12 connected to the protective component 11, a first side plate 19 located on the other side of the material storage component 12, a base plate 13 connected to the first side plate 19 and the protective component 11, a groove 14 formed outside one of the base plates 13, a movable component 15, a mold assembly 16, a motor 17 connected to the first side plate 19, and a connecting pipe 18. The material storage component 12 is connected to the mold assembly 16 via the connecting pipe 18. There are several movable components 15, each connected to the material storage component 12. The material storage component 12 is connected to the mold assembly 16, and the mold assembly 16 is connected to the movable components 15. Adjustment mechanism 2 includes a sealing component 21, a pressure injection valve 22, a pressure relief valve 23 connected to the sealing component 21, and four telescopic rods 24. All four telescopic rods 24 are connected to the sealing component 21. The pressure injection valve 22 and the pressure relief valve 23 are connected to an external pressure structure. The protective component 11 is connected to an external... The molten raw material is connected, and the storage component 12 is connected to the protective component 11. The storage component 12 is used to inject the molten raw material into the uppermost mold component 16. The motor 17 is used to drive the storage component 12 to rotate. By designing the movable component 15 and the mold component 16, the device will pressurize the uppermost telescopic rod 24 every time it rotates 90 degrees to ensure that the moving mold 161 and the fixed mold 162 fit together. At the same time, the pressure will be released from the lowermost telescopic rod 24 to complete the unloading step, so as to make the injection molding process continuous. When one mold completes injection molding, de-bubbling, demolding and part removal, other molds will enter the injection station in sequence, reducing equipment waiting time and increasing the output of products per unit time. At the same time, since the molten raw material needs to be rotated immediately after being injected into the fixed mold 162, and the fixed mold 162 and the moving mold 161 are in a state of continuous vibration during the rotation, the device can more effectively remove air bubbles through the combined centrifugal force and vibration force during rotation, improving the strength and appearance quality of the mudguard.

[0048] In an embodiment of the present invention, one side of the protective component 11 is connected to the storage component 12, the protective component 11 is snapped onto one side of the storage component 12, the lower part of the protective component 11 is fixedly connected to the bottom plate 13, a groove 14 is provided on the upper part of the bottom plate 13 connected to the protective component 11, a plurality of movable components 15 are fixedly connected to the outside of the storage component 12, the storage component 12 is connected to a plurality of connecting pipes 18, the plurality of movable components 15 are respectively fixedly connected to a plurality of mold components 16, the plurality of mold components 16 are respectively connected to the storage component 12 through a plurality of connecting pipes 18, the other side of the storage component 12 is snapped onto the first side plate 19, the motor 17 is fixedly connected to one side of the first side plate 19, the motor 17 passes through the first side plate 19 and is drivenly connected to the storage component 12. The side plate 19 is fixedly connected to another base plate 13 via the frame. The upper side of the sealing assembly 21 is connected to the pressure injection valve 22, and the lower side of the sealing assembly 21 is connected to the pressure relief valve 23. The sealing assembly 21 is connected to several telescopic rods 24. The mold assembly 16 is slidably connected to the other end of the telescopic rods 24. The device completes the vibration to remove air bubbles during rotation. Compared with the traditional static vibration method, the centrifugal force generated by rotation combined with vibration can more effectively remove air bubbles from the molten raw material, reduce internal defects of the product, and thus improve the strength and appearance quality of the mudguard. At the same time, the combination of rotation and vibration can ensure that the raw material in all parts of the mold cavity is subjected to uniform force, avoid the situation of local air bubble residue, and ensure the uniformity of the internal quality of the mudguard.

[0049] In an embodiment of the present invention, the protective component 11 includes a second side plate 111. A connecting sleeve 112 is snapped onto one side of the second side plate 111. A feed pipe 114 is sleeved inside the connecting sleeve 112. The feed pipe 114 is connected to an external melting raw material device. A plurality of toothed blocks 113 are fixedly connected to one side of the second side plate 111, and the plurality of toothed blocks 113 are evenly and equidistantly arranged outside the second side plate 111. A bracket is fixedly connected to the other side of the second side plate 111. The second side plate 111 is fixedly connected to the base plate 13 through a support frame 115. The feed pipe 114 is snapped onto one side of the storage component 12 and is connected to the storage component 12. This device reduces the number of molds required at the same time and lowers the mold manufacturing and maintenance costs by setting multiple moving molds 161 and fixed molds 162 in a single processing environment, and all of the multiple moving molds 161 and fixed molds 162 can be processed. Multiple processes are completed sequentially by rotation.

[0050] The movable component 15 includes a mounting plate 151. Two positioning brackets 155 are fixedly connected to both sides of the mounting plate 151. Four sliding grooves 152 are formed on the top of the mounting plate 151, and two elastic telescopic rods 153 are fixedly connected to each of the four sliding grooves 152. Two elastic telescopic rods 153 located in the same sliding groove 152 are fixedly connected to the same slider 154. A through hole 156 is formed on the top of the mounting plate 151. The mounting plate 151 is fixedly connected to the outside of the storage component 12 via the positioning brackets 155. A connecting pipe 18 is located within the through hole 156. The other end of several sliders 154 is fixedly connected to the same mold assembly 16. While one mold completes injection molding, vibration to remove air bubbles, and demolding, other molds can enter the injection molding station in sequence, reducing equipment waiting time and greatly increasing the product output per unit time. When the device rotates to the bottom, the fixed mold 162 and the moving mold 161 separate. When picking up the material, the fixed mold 162 is on top and the moving mold 161 moves down. This design simplifies the part picking operation process, reduces the time and difficulty of manual part picking, and further speeds up the production pace.

[0051] In another embodiment of the present invention, the mold assembly 16 includes a movable mold 161, a fixed mold 162 is snapped onto the lower part of the movable mold 161, a lever 163 is fixedly connected to one side of the fixed mold 162, the lever 163 overlaps with the toothed block 113, the lower part of the fixed mold 162 is fixedly connected to the upper part of a plurality of sliders 154, and the upper part of the movable mold 161 is slidably connected to the other end of the telescopic rod 24. Since the upper part of the movable mold 161 is in a slidably connected state to the bottom end of the telescopic rod 24, when the lever 163 outside the fixed mold 162... When the storage component 12 rotates and comes into contact with the toothed block 113, it will squeeze the fixed mold 162 to move. When it is misaligned with the toothed block 113, it will be squeezed and reset by the elastic telescopic rod 153. The above process continues as the storage component 12 rotates. At this time, the bottom end of the telescopic rod 24 will slide above the moving mold 161. On the one hand, it ensures the squeezing effect of the telescopic rod 24 on the moving mold 161. On the other hand, it ensures the shaking effect of the fixed mold 162 and the moving mold 161, and avoids jamming.

[0052] In another embodiment of the present invention, the sealing assembly 21 includes a sealing shell 211, which is annular. A connecting groove 212 is provided inside the sealing shell 211. Four connecting blocks 213 are slidably connected inside the connecting groove 212, and sealing plates 214 are snapped onto both sides of the four connecting blocks 213. The sealing plates 214 are slidably connected inside the connecting groove 212. Connecting holes 216 are provided on one side and below the connecting blocks 213. A sealing gasket 215 is provided inside the sealing shell 211. By designing the material storage assembly 12 of the motor 17, the device injects molten raw material into the material storage assembly 12. As the material storage assembly 12 rotates, the raw material can be more evenly distributed inside the material storage assembly 12. When injecting into the mold, it can ensure that the raw material is more evenly filled into all parts of the mold cavity, avoiding local underfilling or overfilling, and significantly improving the dimensional accuracy and shape consistency of the mudguard.

[0053] The connecting hole 216 is connected to the telescopic rod 24. The uppermost connecting block 213 is connected to the pressure injection valve 22 through the connecting hole 216, and the lowermost connecting block 213 is connected to the pressure relief valve 23 through the connecting hole 216. The sealing gasket 215 can prevent gas leakage or gas entry into the telescopic rod 24 when the connecting block 213 rotates inside the sealing shell 211. The sealing shell 211 is connected to the pressure injection valve 22 and the pressure relief valve 23 respectively. The elastic telescopic rod 153 is used to ensure that the slider 154 can quickly return to its original position after being squeezed and misaligned. The pusher block 163 is used to contact the toothed block 113 to squeeze the fixed mold 162 and the moving mold 161 to move. The material storage group is designed. The design of component 12 and mold assembly 16, and the rotating mold 161, makes the overall structure of the equipment more compact. The various components are rationally arranged around the material storage assembly 12, the moving mold 161 and the fixed mold 162, which reduces the footprint of the equipment. More production equipment can be arranged in the limited production space, improving space utilization. Moreover, since the fixed mold 162 and the moving mold 161 can complete multiple processes in sequence during rotation, the number of fixed molds 162 and the moving mold 161 required at the same time is reduced. Compared with the traditional process that requires multiple sets of fixed molds 162 and moving molds 161 to perform injection molding, de-bubbling and demolding, the improved device can reduce the manufacturing and maintenance costs of fixed molds 162 and moving molds 161.

[0054] Working Principle: This embodiment provides an injection molding device for a rear mudguard of an electric vehicle. In use, first connect the external melting material equipment to the feed pipe 114 and start the device power. The external melting material equipment transports the molten material to the feed pipe 114, guiding it into the storage assembly 12 for temporary storage. Then, the motor 17 is started. When the fixed mold 162 is at the top of the storage assembly 12, the motor 17 stops running. The storage assembly 12 injects the molten material into the top fixed mold 162 through an internal extrusion device. Simultaneously, the external pressure structure injects gas at a set pressure into the sealing assembly 21 through the injection valve 22. The gas enters the telescopic rod 24 through the connection hole 216 in the sealing assembly 21. The telescopic rod 24 extends and applies stable pressure to the moving mold 161, ensuring a tight mold-to-mold seal between the moving mold 161 and the fixed mold 162. Then, the motor 17... During the first operation, the motor 17 drives the storage assembly 12 to rotate around its axis. Several movable components 15 on the outside of the storage assembly 12 and the mold assembly 16 connected to it rotate synchronously. During this process, the push block 163 on the fixed mold 162 continuously contacts the toothed block 113 outside the protective assembly 11 as it rotates. The fixed mold 162, squeezed by the toothed block 113, drives the slider 154 to slide along the slide groove 152. The elastic telescopic rod 153 is compressed. When the push block 163 and the toothed block 113 are misaligned, the elastic telescopic rod 153 resets and pushes the slider 154 and the fixed mold 162 back, causing the moving mold 161 and the fixed mold 162 to vibrate periodically, effectively preventing air bubbles or local jamming of the molten material when filling the cavity.

[0055] After rotating 180 degrees, the raw material that has expelled bubbles and cooled will be at the bottom of the storage component 12. At this time, the motor 17 stops running, the pressure relief valve 23 automatically opens and connects with the external pressure structure, the pressure release telescopic rod 24 retracts and the moving mold 161 moves down, the moving mold 161 separates from the fixed mold 162, so that the cooled finished product is directly exposed, and the molded electric vehicle rear mudguard can be removed to complete one injection molding operation.

[0056] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. An injection molding device for a rear mudguard of an electric vehicle, characterized in that, It includes an injection molding mechanism (1) and an adjustment mechanism (2), wherein the adjustment mechanism (2) is located outside the injection molding mechanism (1); The injection molding mechanism (1) includes a protective component (11), a storage component (12) connected to the protective component (11), a first side plate (19) located on the other side of the storage component (12), a base plate (13) connected to the first side plate (19) and the protective component (11), a groove (14) formed outside one of the base plates (13), a movable component (15), a mold component (16), a motor (17) connected to the first side plate (19), and a connecting pipe (18). The storage component (12) is connected to the mold component (16) through the connecting pipe (18). There are several movable components (15), and several movable components (15) are connected to the storage component (12). The storage component (12) is connected to the mold component (16), and the mold component (16) is connected to the movable component (15). The regulating mechanism (2) includes a sealing assembly (21), a pressure injection valve (22) connected to the sealing assembly (21), a pressure relief valve (23) and a telescopic rod (24), wherein there are four telescopic rods (24), all four telescopic rods (24) are connected to the sealing assembly (21), and the pressure injection valve (22) and the pressure relief valve (23) are connected to an external pressure structure; The protective component (11) is connected to the external molten raw material, the storage component (12) is connected to the protective component (11), the storage component (12) is used to inject the molten raw material into the uppermost mold component (16), and the motor (17) is used to drive the storage component (12) to rotate.

2. The electric vehicle rear mudguard injection molding device according to claim 1, characterized in that, One side of the protective component (11) is connected to the storage component (12). The protective component (11) is snapped onto one side of the storage component (12). The lower part of the protective component (11) is fixedly connected to the bottom plate (13). A groove (14) is provided on the top of the bottom plate (13) connected to the protective component (11). Several movable components (15) are fixedly connected to the outside of the storage component (12).

3. The electric vehicle rear mudguard injection molding device according to claim 2, characterized in that, The storage component (12) is connected to several connecting pipes (18), several movable components (15) are fixedly connected to several mold components (16), several mold components (16) are connected to the storage component (12) through several connecting pipes (18), the other side of the storage component (12) is snapped into the first side plate (19), the motor (17) is fixedly connected to one side of the first side plate (19), the motor (17) passes through the first side plate (19) and is connected to the storage component (12) for transmission, and the first side plate (19) is fixedly connected to another base plate (13) through the frame.

4. The electric vehicle rear mudguard injection molding device according to claim 3, characterized in that, The upper side of the sealing assembly (21) is connected to the pressure injection valve (22), the lower side of the sealing assembly (21) is connected to the pressure relief valve (23), and the sealing assembly (21) is connected to several telescopic rods (24). The mold assembly (16) is slidably connected to the other end of the telescopic rod (24).

5. The electric vehicle rear mudguard injection molding device according to claim 4, characterized in that, The protective component (11) includes a second side plate (111), a connecting sleeve (112) is snapped onto one side of the second side plate (111), a feed pipe (114) is sleeved inside the connecting sleeve (112), the feed pipe (114) is connected to an external melting raw material device, a plurality of toothed blocks (113) are fixedly connected to one side of the second side plate (111), and the plurality of toothed blocks (113) are evenly and equidistantly arranged outside the second side plate (111), and a bracket is fixedly connected to the other side of the second side plate (111). The second side plate (111) is fixedly connected to the bottom plate (13) through the support frame (115), and the feed pipe (114) is snapped onto one side of the storage component (12), and the feed pipe (114) is connected to the storage component (12).

6. The electric vehicle rear fender injection molding device according to claim 5, characterized in that, The active component (15) includes a mounting plate (151), on both sides of which two positioning frames (155) are fixedly connected. Four sliding grooves (152) are provided on the top of the mounting plate (151), and two elastic telescopic rods (153) are fixedly connected in each of the four sliding grooves (152). The two elastic telescopic rods (153) located in the same sliding groove (152) are fixedly connected to the same slider (154).

7. The electric vehicle rear mudguard injection molding device according to claim 6, characterized in that, A through hole (156) is provided on the top of the mounting plate (151). The mounting plate (151) is fixedly connected to the outside of the storage assembly (12) by the positioning frame (155), the connecting pipe (18) is located in the through hole (156), and the other end of several sliders (154) is fixedly connected to the same mold assembly (16).

8. The electric vehicle rear mudguard injection molding device according to claim 7, characterized in that, The mold assembly (16) includes a moving mold (161), a fixed mold (162) is snapped into the lower part of the moving mold (161), and a lever (163) is fixedly connected to one side of the fixed mold (162). The push block (163) overlaps with the tooth block (113), the lower part of the fixed mold (162) is fixedly connected to the upper part of several sliders (154), and the upper part of the moving mold (161) is slidably connected to the other end of the telescopic rod (24).

9. The electric vehicle rear mudguard injection molding device according to claim 8, characterized in that, The sealing assembly (21) includes a sealing shell (211), which is annular. A connecting groove (212) is provided inside the sealing shell (211). Four connecting blocks (213) are slidably connected inside the connecting groove (212), and sealing plates (214) are snapped onto both sides of the four connecting blocks (213). The sealing plates (214) are slidably connected inside the connecting groove (212). A connecting hole (216) is provided on one side and below the connecting block (213). A sealing gasket (215) is provided inside the sealing shell (211). The connecting hole (216) is connected to the telescopic rod (24). The uppermost connecting block (213) is connected to the pressure injection valve (22) through the connecting hole (216). The lowermost connecting block (213) is connected to the pressure relief valve (23) through the connecting hole (216). The sealing gasket (215) can prevent gas leakage or gas from entering the telescopic rod (24) when the connecting block (213) rotates in the sealing shell (211). The sealing shell (211) is connected to the pressure injection valve (22) and the pressure relief valve (23) respectively.

10. The injection molding device for the rear mudguard of an electric vehicle according to claim 9, characterized in that, The elastic telescopic rod (153) is used to ensure that the slider (154) can quickly return to its original position after being squeezed and misaligned, and the pusher (163) is used to contact the tooth block (113) to squeeze the fixed mold (162) and the moving mold (161) to move.

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