Weather-resistant automobile trim molding device
By introducing cutting and feeding components into the forming device, the problem of material blockage was solved, achieving uniform material conveying and high-precision cutting, improving production efficiency and equipment reliability, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAICANG RIHUI ENVIRONMENTAL PROTECTION MATERIAL TECH CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-14
AI Technical Summary
Existing molding equipment is prone to material blockage when processing automotive trim strips, resulting in uneven material flow, which affects product quality and production efficiency, and requires frequent shutdowns for cleaning, thus extending the production cycle.
A weather-resistant automotive trim molding device was designed, which employs a cutting component and a feeding component. The cutting component works in concert with a sliding groove, guide rod, guide block, spring, and cutting blade on the auger shaft to avoid clogging. The feeding component ensures uniform material conveying through a linkage rod, scraper, and spiral blade.
It effectively reduces the number of times equipment cleaning and maintenance are required, improves the reliability and stability of the equipment, ensures uniform material conveying and cutting accuracy, reduces maintenance costs, and extends the service life of the equipment.
Smart Images

Figure CN224489275U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive trim processing technology, and in particular to a weather-resistant automotive trim forming device. Background Technology
[0002] During the use of automobiles, trim strips need to be exposed to various natural environments for a long time, such as wind, rain, and sun. This requires the trim strips to have good weather resistance to ensure that they can maintain their appearance and performance stability after long-term use. Trim strips made of polyvinyl chloride (PVC) need to be treated according to different color and decorative effects to achieve requirements such as strong weather resistance, high fit, durability, no deformation, and no discoloration. They are currently widely used in car doors, windows, body, roof racks, and other parts. On the other hand, automotive exterior trim strips made of stainless steel have the advantages of strong corrosion resistance, high strength, good durability, and beautiful appearance. In order to increase their corrosion resistance and aesthetics, surface treatment technologies such as chrome plating and nickel plating are usually used to give them a bright metallic luster and enhance their weather resistance.
[0003] Existing molding equipment often experiences material blockage during processing. This blockage causes uneven material flow within the molding equipment, leading to insufficient filling of the product, defects such as missing material and short shots, and product dimensions that do not meet design requirements. In injection molding, PFA expanders may not be able to be fully molded due to runner blockage, affecting their functionality and sealing. At the same time, material blockage can cause production interruptions, requiring machine shutdown to clear the blockage, which increases downtime and prolongs the production cycle.
[0004] Therefore, there is an urgent need to provide a weather-resistant automotive trim molding device to solve the above problems. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a weather-resistant automotive trim molding device.
[0006] To solve the above-mentioned technical problems, the present invention provides a weather-resistant automotive trim molding device, comprising multiple support rods, a discharge box fixedly connected between the upper ends of the multiple support rods, and a reinforcing rib fixedly connected between the inner sides of every two support rods.
[0007] A first motor is installed on one side of the outer wall of the discharge box, and a discharge port is fixedly connected to the other side of the outer wall of the discharge box. An auger shaft is fixedly connected to the output end of the first motor.
[0008] A cutting component is installed inside the auger shaft, and a feeding component is installed at the top of the discharge box. The cutting component and the feeding component work together precisely to effectively avoid the risk of blockage during device operation.
[0009] The present invention is further configured such that: the cutting component includes multiple sliding grooves formed on the auger shaft, each sliding groove has a guide rod fixedly connected to its inner wall, each guide rod has a guide block slidably connected to its outer wall, each guide rod has two springs slidably connected to its outer wall, each guide block has a protective plate fixedly connected to its outer wall, and each protective plate has a cutting blade fixedly connected to its outer wall.
[0010] The above technical solution first starts the first motor, which drives the auger shaft to rotate synchronously. Then, the auger shaft also drives the sliding groove, guide rod, guide block, spring, protective plate and cutting blade to move synchronously. When multiple cutting blades cut into hard objects, the cutting blades will drive the corresponding guide block and protective plate to slide along the inner wall of the sliding groove. At the same time, the spring will play a buffering role, thereby improving the service life of the cutting blades and achieving the purpose of cutting.
[0011] The present invention is further configured such that each pair of springs is disposed on both sides of the corresponding guide block, and the two sets of springs and guide blocks are parallel to each other.
[0012] Through the above technical solution, the parallel springs can constrain the movement trajectory of the guide block, ensuring that it always slides in a straight line along the guide rod, avoiding angular deviation caused by lateral force, thereby maintaining the cutting accuracy of the cutting disc.
[0013] The present invention is further configured such that the inner walls of the plurality of guide blocks are in close contact with the outer walls of the corresponding guide rods, and the outer walls of the plurality of guide blocks are matched with the corresponding sliding grooves.
[0014] The above technical solution can constrain the movement trajectory of the guide block, ensuring that it slides only along the axial direction of the guide rod, avoiding the swaying of the cutting blade caused by lateral clearance, and improving cutting accuracy. At the same time, when the cutting blade encounters resistance, the tightly fitted structure can better transmit and disperse torque, preventing the guide block from twisting in the sliding groove and ensuring the reliability of the buffer action.
[0015] The present invention is further configured such that: the feeding assembly includes a feeding pipe fixedly connected to the upper end of the discharge box, a feeding tank fixedly connected to the upper end of the feeding pipe, a second motor installed on the top of the feeding pipe, a feeding port provided on one side of the top of the feeding pipe, a transmission rod fixedly connected to the output end of the second motor, a plurality of linkage rods fixedly connected to the surface of the transmission rod, a scraper fixedly connected between the outer sides of each group of linkage rods, and a spiral blade provided at the lower end of the transmission rod.
[0016] The above technical solution involves first starting the second motor, which drives the transmission rod to rotate. The transmission rod also drives multiple linkage rods to rotate synchronously. At the same time, the multiple linkage rods drive the scraper to rotate along the inside of the feeding tank and the feeding pipe. Then, the material is added to the feeding tank through the feeding port. Subsequently, the material is stirred by the multiple linkage rods until it is discharged from the feeding pipe through the spiral blades.
[0017] The present invention is further configured such that the linkage rods are all set at a 90° angle to the adjacent linkage rods, and the spacing between each group of linkage rods in the vertical direction is equal.
[0018] The above technical solution enables the linkage rods at different positions to agitate the material from multiple directions when rotating, avoiding local accumulation or uneven mixing of the material. The equal vertical spacing ensures that the material is uniformly agitated throughout the entire height range of the feeding tank and feeding pipe, making the material mix more thoroughly.
[0019] The present invention is further configured such that the outer sides of the plurality of scrapers are fitted with the inner side of the feeding tank, and the outer diameter of the spiral blade is precisely matched with the inner diameter of the feeding tube.
[0020] The above technical solution ensures that the scraper closely adheres to the inner wall of the feeding tank during rotation, effectively scraping off the material adhering to the inner wall of the feeding tank, preventing material residue, improving material utilization, and covering the entire space inside the feeding tank from the tank wall to the center, achieving uniform mixing of materials, avoiding insufficient mixing in some areas, and ensuring the mixing effect of materials.
[0021] The beneficial effects of this utility model are as follows:
[0022] 1. By setting up a cutting component, this utility model reduces the number of times the equipment needs to be cleaned and repaired due to blockage, thereby reducing maintenance costs and equipment wear and tear. At the same time, it also extends the service life of the equipment and improves its reliability and stability.
[0023] 2. By setting up a feeding component, this utility model can reasonably distribute and guide the material entering the molding device, avoid the accumulation of material at the feed inlet or conveying channel, and effectively prevent impurities, large particles or irregularly shaped parts in the material from clogging the feeding pipe, thus ensuring the smooth flow of the feeding pipe. Attached Figure Description
[0024] Figure 1 This is an appearance drawing of the present utility model;
[0025] Figure 2 This is a cross-sectional view of the present invention;
[0026] Figure 3 This is a schematic diagram of the auger shaft structure of this utility model;
[0027] Figure 4 This is a longitudinal sectional view of the auger shaft of this utility model;
[0028] Figure 5 for Figure 2 A magnified view of a portion of point A in the middle.
[0029] In the diagram: 1. Support rod; 2. Discharge box; 3. Reinforcing rib; 4. First motor; 5. Discharge port; 6. Screw shaft; 7. Cutting assembly; 701. Sliding groove; 702. Guide rod; 703. Guide block; 704. Spring; 705. Protective plate; 706. Cutting blade; 8. Feeding assembly; 801. Feeding pipe; 802. Feeding tank; 803. Second motor; 804. Feeding port; 805. Transmission rod; 806. Linkage rod; 807. Scraper; 808. Spiral blade. Detailed Implementation
[0030] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.
[0031] Please see Figures 1-5A weather-resistant automotive trim molding device includes multiple support rods 1, with a discharge box 2 fixedly connected between the upper ends of the support rods 1. A reinforcing rib 3 is fixedly connected between the inner sides of every two support rods 1. A first motor 4 is installed on one side of the outer wall of the discharge box 2, and a discharge port 5 is fixedly connected to the other side of the outer wall of the discharge box 2. A auger shaft 6 is fixedly connected to the output end of the first motor 4. A cutting assembly 7 is installed inside the auger shaft 6. The cutting assembly 7 includes multiple sliding grooves 701 formed on the auger shaft 6. Guide rods 702 are fixedly connected to the inner walls of the multiple sliding grooves 701. 02. Guide blocks 703 are slidably connected to the outer walls of the multiple guide rods 702. Two springs 704 are slidably connected to the outer walls of the multiple guide blocks 703. Protective plates 705 are fixedly connected to the outer walls of the multiple protective plates 705. Cutting blades 706 are fixedly connected to the outer walls of the multiple protective plates 705. First, the first motor 4 is started, causing the first motor 4 to drive the auger shaft 6 to rotate synchronously. Then, the auger shaft 6 will also drive the sliding groove 701, guide rods 702, guide blocks 703, springs 704, protective plates 705 and cutting blades 706 to move synchronously. When the multiple cutting blades 706 cut into a hard object, the cutting blades 706... The cutting disc 706 is driven to slide along the inner wall of the sliding groove 701, along with the corresponding guide block 703 and protective plate 705. Simultaneously, the spring 704 acts as a buffer, thereby increasing the service life of the cutting disc 706 and achieving the cutting purpose. Each pair of springs 704 is positioned on both sides of the corresponding guide block 703, and both sets of springs 704 are parallel to the guide block 703. The parallel arrangement of the springs 704 constrains the movement trajectory of the guide block 703, ensuring it always slides in a straight line along the guide rod 702, preventing angular deviation caused by lateral forces, and thus maintaining the cutting accuracy. The cutting accuracy of the cutting sheet 706 is ensured by the close contact between the inner walls of multiple guide blocks 703 and the outer walls of the corresponding guide rods 702, and the matching of the outer walls of multiple guide blocks 703 with the corresponding sliding grooves 701. This constrains the movement trajectory of the guide blocks 703, ensuring that they slide only along the axial direction of the guide rods 702, avoiding the swaying of the cutting sheet 706 due to lateral clearance, and improving the cutting accuracy. At the same time, when the cutting sheet 706 encounters resistance, the tightly fitted structure can better transmit and disperse torque, preventing the guide blocks 703 from twisting in the sliding grooves 701, and ensuring the reliability of the buffer action.
[0032] like Figure 1 and Figure 5As shown, a feeding assembly 8 is installed on the upper end of the discharge box 2. The cutting assembly 7 and the feeding assembly 8 work together precisely to effectively avoid the risk of blockage during operation. The feeding assembly 8 includes a feeding pipe 801 fixedly connected to the upper end of the discharge box 2. A feeding tank 802 is fixedly connected to the upper end of the feeding pipe 801. A second motor 803 is installed on the top of the feeding pipe 801. A feeding port 804 is provided on one side of the top of the feeding pipe 801. A transmission rod 805 is fixedly connected to the output end of the second motor 803. Multiple linkage rods 8 are fixedly connected to the surface of the transmission rod 805. 06. Each set of linkage rods 806 is fixedly connected to a scraper 807 on its outer side, and a spiral blade 808 is provided at the lower end of the transmission rod 805. First, the second motor 803 is started, causing the second motor 803 to drive the transmission rod 805 to rotate. The transmission rod 805 also drives multiple linkage rods 806 to rotate synchronously. At the same time, the multiple linkage rods 806 drive the scraper 807 to rotate along the inner side of the feeding tank 802 and the feeding pipe 801. Then, the material is added to the feeding tank 802 through the feeding port 804, and then the material is transferred to the feeding tank 802 through the multiple linkage rods 806. 06. Stirring continues until the material is discharged from the feed pipe 801 through the spiral blade 808. All linkage rods 806 are set at a 90° angle to adjacent linkage rods 806, and the vertical spacing of each set of linkage rods 806 is equal. This ensures that the linkage rods 806 at different positions can agitate the material from multiple directions during rotation, preventing localized accumulation or uneven mixing. The equal vertical spacing ensures that the material receives uniform stirring throughout the entire height range of the feed tank 802 and the feed pipe 801, resulting in more thorough mixing. The outer sides of multiple scrapers 807 are all fitted with the inner side of the feeding tank 802, and the outer diameter of the spiral blade 808 is precisely matched with the inner diameter of the feeding pipe 801. This ensures that the scrapers 807 are in close contact with the inner wall of the feeding tank 802 during rotation, effectively scraping off the material adhering to the inner wall of the feeding tank 802, preventing material residue, improving material utilization, and covering the entire space inside the feeding tank 802, from the tank wall to the center, achieving uniform mixing of the material, avoiding insufficient mixing in some areas, and ensuring the mixing effect of the material.
[0033] In use, this invention first starts the second motor 803, causing it to drive the transmission rod 805 to rotate. The transmission rod 805 also drives multiple linkage rods 806 to rotate synchronously. Simultaneously, the linkage rods 806 drive the scraper 807 to rotate along the inner side of the feeding tank 802 and the feeding pipe 801. Then, material is added to the feeding tank 802 through the feeding port 804. Subsequently, the material is stirred by the linkage rods 806 until it is discharged from the feeding pipe 801 through the spiral blade 808. Finally, the first motor 4 is started. The auger shaft 6 rotates synchronously, and the auger shaft 6 also drives the sliding groove 701, guide rod 702, guide block 703, spring 704, protective plate 705 and cutting blade 706 to move synchronously. When multiple cutting blades 706 cut into hard objects, the cutting blades 706 will drive the corresponding guide block 703 and protective plate 705 to slide along the inner wall of the sliding groove 701. At the same time, the spring 704 will play a buffering role, thereby improving the service life of the cutting blades 706 and achieving the purpose of cutting. Finally, the material is squeezed into the discharge port 5 by the auger shaft 6 to form the material.
[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A weather-resistant automotive trim molding device, comprising a support rod (1), characterized in that: A discharge box (2) is fixedly connected between the upper ends of multiple support rods (1), and a reinforcing rib (3) is fixedly connected between the inner sides of every two support rods (1). A first motor (4) is installed on one side of the outer wall of the discharge box (2), and a discharge port (5) is fixedly connected to the other side of the outer wall of the discharge box (2). A screw shaft (6) is fixedly connected to the output end of the first motor (4). The auger shaft (6) has a cutting component (7) installed inside its body, and the discharge box (2) has a feeding component (8) installed at its upper end. The cutting component (7) and the feeding component (8) work together in a precise manner to effectively avoid the risk of blockage during the operation of the device.
2. The weather-resistant automotive trim strip forming device according to claim 1, characterized in that: The cutting assembly (7) includes multiple sliding grooves (701) formed on the auger shaft (6). The inner walls of the multiple sliding grooves (701) are fixedly connected to guide rods (702). The outer walls of the multiple guide rods (702) are slidably connected to guide blocks (703). The outer walls of the multiple guide rods (702) are slidably connected to two springs (704). The outer walls of the multiple guide blocks (703) are fixedly connected to protective plates (705). The outer walls of the multiple protective plates (705) are fixedly connected to cutting blades (706).
3. The weather-resistant automotive trim strip forming device according to claim 2, characterized in that: Each pair of springs (704) is disposed on both sides of the corresponding guide block (703), and both sets of springs (704) and guide blocks (703) are parallel to each other.
4. The weather-resistant automotive trim strip forming device according to claim 2, characterized in that: The inner walls of the multiple guide blocks (703) are in close contact with the outer walls of the corresponding guide rods (702), and the outer walls of the multiple guide blocks (703) are matched with the corresponding sliding grooves (701).
5. The weather-resistant automotive trim strip forming device according to claim 1, characterized in that: The feeding assembly (8) includes a feeding pipe (801) fixedly connected to the upper end of the discharge box (2), a feeding tank (802) fixedly connected to the upper end of the feeding pipe (801), a second motor (803) installed on the top of the feeding pipe (801), a feeding port (804) provided on one side of the top of the feeding pipe (801), a transmission rod (805) fixedly connected to the output end of the second motor (803), a plurality of linkage rods (806) fixedly connected to the surface of the transmission rod (805), a scraper (807) fixedly connected between the outer sides of each group of linkage rods (806), and a spiral blade (808) provided at the lower end of the transmission rod (805).
6. The weather-resistant automotive trim strip forming device according to claim 5, characterized in that: The linkage rods (806) are all set at a 90° angle to the adjacent linkage rods (806), and the spacing between each group of linkage rods (806) in the vertical direction is equal.
7. The weather-resistant automotive trim strip forming device according to claim 5, characterized in that: The outer sides of the multiple scrapers (807) are fitted with the inner side of the feed tank (802), and the outer diameter of the spiral blade (808) is precisely matched with the inner diameter of the feed tube (801).