A mold for easy demolding of automotive taillight covers
By introducing moving and pushing components into the automotive taillight cover mold, the efficient alternation of the mold is achieved, solving the problems of low cooling and demolding efficiency, improving production efficiency and reducing the risk of burns.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 常州市永普车灯有限公司
- Filing Date
- 2025-06-26
- Publication Date
- 2026-05-26
AI Technical Summary
The existing automotive taillight cover molds have low utilization rates during cooling and demolding processes, resulting in low production efficiency.
The system employs a moving component and a pushing component, with a motor driving a lead screw to rotate, allowing two lower molds to be used alternately. One mold is used for cooling and demolding, while the other is used for injection molding. The system also utilizes a cooling fan and a cylinder pusher plate structure to achieve rapid cooling and demolding.
It improved production efficiency, reduced mold downtime, decreased the risk of burns, and increased mold utilization.
Smart Images

Figure CN224275915U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive taillight manufacturing technology, and in particular to a mold for processing automotive taillight covers that facilitates demolding. Background Technology
[0002] A taillight cover is a cover installed at the rear of a car to protect the taillights and enhance the vehicle's appearance and visibility. It is typically made of plastic or polycarbonate and offers good light transmittance and weather resistance.
[0003] Taillight cover injection molds typically use a single lower mold for injection, cooling, and demolding. After each injection, it is necessary to wait for the taillight cover inside the lower mold to cool before it can be removed, and then the next injection can be performed. During the cooling and demolding process, the mold is idle, resulting in low mold utilization and reduced production efficiency. Therefore, we propose a mold for processing automotive taillight covers that facilitates demolding. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides a mold for processing automotive taillight covers that is easy to demold.
[0005] This utility model is achieved using the following technical solution: a mold for processing automotive taillight covers that is easy to demold, comprising a support frame, a fixing rod fixedly connected to the top of the support frame, a top plate fixedly connected to the top of the fixing rod, a hydraulic rod fixedly connected to the top of the top plate, the output end of the hydraulic rod penetrating the top plate and fixedly connected to a mounting plate, an upper mold fixedly connected to the bottom of the mounting plate, an injection tube fixedly connected to the inner wall of the mounting plate, a moving component provided at the top of the support frame, two lower molds provided above the moving component, and a pushing component provided at the bottom of each of the two lower molds;
[0006] The movable component includes a fixed frame, a rotating connecting rod on the inner wall of the fixed frame, a motor fixedly connected to the right end of the fixed frame, a limit rod fixedly connected to the inner wall of the fixed frame, and two mounting seats threadedly connected to the surface of the connecting rod.
[0007] With the above technical solution, after the upper and lower molds are closed and plastic material is injected, external cooling equipment, such as a fan, is used to cool the material and solidify it. The motor drives the lead screw to rotate, causing the two mounting seats to move along the limit rod. This moves the lower mold containing the taillight cover to one side, while the un-injected lower mold moves below the upper mold. By using the two lower molds alternately, one lower mold can be cooled and demolded while the other is being injection molded, greatly improving production efficiency.
[0008] As a further improvement to the above solution, the bottom of the fixing frame is fixedly connected to the top of the support frame, and the output end of the motor is fixedly connected to the right end of the lead screw.
[0009] As a further improvement to the above solution, the inner wall of the mounting base is slidably connected to the surface of the limiting rod.
[0010] The above technical solution uses a limiting rod to limit the mounting base, preventing it from shifting during movement.
[0011] As a further improvement to the above solution, two limiting rods are provided, and the two limiting rods are symmetrically distributed with respect to the position of the fixing frame.
[0012] The above technical solution improves the limiting effect by using two limiting rods, while also providing support for the mounting base.
[0013] As a further improvement to the above solution, the pushing assembly includes a base plate, with support rods fixedly connected to the four top corners of the base plate, a cylinder fixedly connected to the top of the base plate, and a push plate fixedly connected to the output end of the cylinder.
[0014] The above technical solution uses the output end of the cylinder to push the push plate upward, which pushes out the cooled taillight cover inside the lower mold, making it easier to remove later.
[0015] As a further improvement to the above solution, the bottom of the base plate is fixedly connected to the top of the mounting base, the top of the support rod is fixedly connected to the bottom of the lower mold, and the push plate is located inside the lower mold.
[0016] With the above technical solution, the push plate is located in the stepped groove inside the lower mold, and the stepped groove plays a limiting role in the push plate.
[0017] As a further improvement to the above solution, the inner wall of the mounting plate is slidably connected to the surface of the fixing rod, the bottom of the injection tube is connected to the upper mold, and extension plates are fixedly connected to both the left and right ends of the top plate, with a cooling fan fixedly connected to the bottom of the extension plate.
[0018] The above technical solution connects the injection tube to external injection molding equipment, allowing molten plastic material to be injected into the upper and lower molds. The solidified taillight cover is then cooled by a cooling fan, facilitating its subsequent removal.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0020] This invention features a movable component and two lower molds. Specifically, a motor drives a lead screw to rotate, causing two mounting seats to move along a limiting rod. This moves the lower mold containing the taillight cover to one side, while the un-injected lower mold moves below the upper mold. By using the two lower molds alternately, one lower mold can be cooled and demolded while the other is being injection molded, greatly improving production efficiency.
[0021] This utility model incorporates a cooling fan and a pushing assembly. Specifically, the cooling fan cools the taillight cover inside the lower mold, preventing it from becoming too hot and difficult to remove, thus reducing the risk of burns. The output end of the cylinder pushes the push plate upward, which then pushes the cooled taillight cover out of the lower mold for easy removal. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is a schematic cross-sectional view of the present invention.
[0024] Figure 3 This is a schematic diagram of the structure of the mobile component of this utility model;
[0025] Figure 4 This utility model Figure 2 Enlarged structural diagram of section A in the middle;
[0026] Figure 5 This is a side view of the structure of this utility model.
[0027] Explanation of key symbols:
[0028] 1. Support frame; 2. Fixing rod; 3. Top plate; 4. Hydraulic rod; 5. Mounting plate; 6. Upper mold; 7. Injection tube; 8. Moving assembly; 801. Fixing frame; 802. Lead screw; 803. Motor; 804. Limiting rod; 805. Mounting base; 9. Lower mold; 10. Pushing assembly; 1001. Base plate; 1002. Supporting rod; 1003. Cylinder; 1004. Push plate; 11. Extension plate; 12. Cooling fan. Detailed Implementation
[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0030] Example:
[0031] Please combine Figure 1-5This embodiment provides a mold for processing automotive taillight covers that facilitates demolding. It includes a support frame 1, a fixing rod 2 fixedly connected to the top of the support frame 1, a top plate 3 fixedly connected to the top of the fixing rod 2, a hydraulic rod 4 fixedly connected to the top of the top plate 3, the output end of the hydraulic rod 4 passing through the top plate 3 and fixedly connected to a mounting plate 5, an upper mold 6 fixedly connected to the bottom of the mounting plate 5, an injection tube 7 fixedly connected to the inner wall of the mounting plate 5, a moving component 8 provided at the top of the support frame 1, two lower molds 9 provided above the moving component 8, and a pusher component 10 provided at the bottom of each of the two lower molds 9.
[0032] The moving component 8 includes a fixed frame 801, a rotating connecting screw 802 on the inner wall of the fixed frame 801, a motor 803 fixedly connected to the right end of the fixed frame 801, and a limiting rod 804 fixedly connected to the inner wall of the fixed frame 801. Two mounting seats 805 are threadedly connected to the surface of the screw 802. After the material is cured, the upper mold 6 is moved upward to open the mold by the hydraulic rod 4. The motor 803 is started, and the motor 803 drives the screw 802 to rotate, causing the two mounting seats 805 to move along the limiting rod 804. This causes the lower mold 9 containing the taillight cover to move to one side, and the un-injected lower mold 9 to move below the upper mold 6. By using the two lower molds 9 alternately, one lower mold 9 can be cooled and demolded while the other lower mold 9 is injection molded, which greatly improves production efficiency.
[0033] The bottom of the fixed frame 801 is fixedly connected to the top of the support frame 1, and the output end of the motor 803 is fixedly connected to the right end of the lead screw 802.
[0034] The inner wall of the mounting base 805 is slidably connected to the surface of the limiting rod 804.
[0035] There are two limit rods 804, which are symmetrically distributed around the position of the fixing frame 801.
[0036] The pusher assembly 10 includes a base plate 1001, with support rods 1002 fixedly connected to the four corners of the top of the base plate 1001. A cylinder 1003 is fixedly connected to the top of the base plate 1001, and a push plate 1004 is fixedly connected to the output end of the cylinder 1003. The push plate 1004 is pushed upward by the output end of the cylinder 1003, and the cooled taillight cover inside the lower mold 9 is pushed out by the push plate 1004 for easy removal later.
[0037] The bottom of the base plate 1001 is fixedly connected to the top of the mounting base 805, the top of the support rod 1002 is fixedly connected to the bottom of the lower mold 9, and the push plate 1004 is located inside the lower mold 9.
[0038] The inner wall of the mounting plate 5 is slidably connected to the surface of the fixing rod 2. The bottom of the injection tube 7 is connected to the upper mold 6. Extension plates 11 are fixedly connected to both the left and right ends of the top plate 3. A cooling fan 12 is fixedly connected to the bottom of the extension plate 11. The cooling fan 12 cools the taillight cover inside the lower mold 9 to prevent the temperature from being too high and making it difficult to remove, thus reducing the risk of burns.
[0039] The implementation principle of a mold for processing automotive taillight covers that facilitates demolding in this embodiment is as follows: During use, the injection tube 7 is connected to an external injection molding device. The hydraulic rod 4 pushes the mounting plate 5 downwards, causing the upper mold 6 and lower mold 9 to close. Molten plastic material is injected into the mold cavity between the upper mold 6 and lower mold 9 using the injection molding device. An external cooling device cools the upper mold 6 and lower mold 9, allowing the material to solidify and form the taillight cover. Once solidified, the hydraulic rod 4 moves the upper mold 6 upwards to open the mold. The motor 803 is started, and the motor 803 drives the lead screw 802 to rotate, causing the two mounting seats 805 to move along the limiting rod 80... 4. Move the lower mold 9 containing the taillight cover to one side, and move the un-injected lower mold 9 below the upper mold 6. By using the two lower molds 9 alternately, one lower mold 9 can be cooled and demolded while the other is being injection molded, greatly improving production efficiency. Then, start the cooling fan 12 to cool the taillight cover inside the lower mold 9, preventing it from getting too hot and making it difficult to remove, thus reducing the risk of burns. Push the push plate 1004 upward through the output end of the cylinder 1003, and push the cooled taillight cover out of the lower mold 9 for easy removal later.
[0040] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A mold for processing automotive taillight covers that facilitates demolding, characterized in that, The support frame (1) is fixedly connected to a fixed rod (2) at the top of the support frame (1), a top plate (3) is fixedly connected to the top of the fixed rod (2), a hydraulic rod (4) is fixedly connected to the top of the top plate (3), the output end of the hydraulic rod (4) passes through the top plate (3) and is fixedly connected to an mounting plate (5), an upper mold (6) is fixedly connected to the bottom of the mounting plate (5), an injection tube (7) is fixedly connected to the inner wall of the mounting plate (5), a moving component (8) is provided at the top of the support frame (1), two lower molds (9) are provided above the moving component (8), and a pusher component (10) is provided at the bottom of each of the two lower molds (9). The moving component (8) includes a fixed frame (801), a rotating connecting screw (802) on the inner wall of the fixed frame (801), a motor (803) fixedly connected to the right end of the fixed frame (801), a limit rod (804) fixedly connected to the inner wall of the fixed frame (801), and two mounting seats (805) threadedly connected to the surface of the screw (802).
2. The mold for processing automotive taillight covers that facilitates demolding as described in claim 1, characterized in that: The bottom of the fixed frame (801) is fixedly connected to the top of the support frame (1), and the output end of the motor (803) is fixedly connected to the right end of the lead screw (802).
3. The mold for processing automotive taillight covers that facilitates demolding as described in claim 1, characterized in that: The inner wall of the mounting base (805) is slidably connected to the surface of the limiting rod (804).
4. The mold for processing automotive taillight covers that facilitates demolding as described in claim 3, characterized in that: There are two limiting rods (804), and the two limiting rods (804) are symmetrically distributed with respect to the position of the fixing frame (801).
5. The mold for processing automotive taillight covers that facilitates demolding as described in claim 1, characterized in that: The pushing assembly (10) includes a base plate (1001), with support rods (1002) fixedly connected to the four corners of the top of the base plate (1001), and a cylinder (1003) fixedly connected to the top of the base plate (1001). A push plate (1004) is fixedly connected to the output end of the cylinder (1003).
6. The mold for processing automotive taillight covers that facilitates demolding as described in claim 5, characterized in that: The bottom of the base plate (1001) is fixedly connected to the top of the mounting base (805), the top of the support rod (1002) is fixedly connected to the bottom of the lower mold (9), and the push plate (1004) is located inside the lower mold (9).
7. The mold for processing automotive taillight covers that facilitates demolding as described in claim 1, characterized in that: The inner wall of the mounting plate (5) is slidably connected to the surface of the fixing rod (2), the bottom of the injection tube (7) is connected to the upper mold (6), and extension plates (11) are fixedly connected to both the left and right ends of the top plate (3). A cooling fan (12) is fixedly connected to the bottom of the extension plate (11).