Automatic trimming device for vehicle door rubber sealing strip
By introducing anti-deviation guide rods and automatic trimming devices in low-temperature freezers during the production of door rubber sealing strips, the problems of twisting and deviation of the sealing strips during transportation have been solved, and efficient and precise automatic trimming has been achieved, thereby improving production efficiency and product quality.
Patent Information
- Application Number
- CN202422615280.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-10-29
AI Technical Summary
Car door rubber sealing strips are prone to burrs during the production process and their softness makes automatic trimming difficult. Existing automatic trimming devices are difficult to implement and manual trimming is inefficient.
An automatic trimming device was designed, which included a sealing strip anti-deviation conveying guide assembly, a low-temperature freezer, and a trimming assembly. The sealing strip was stabilized by an anti-deviation guide rod, which was hardened by low-temperature treatment. Precise trimming was achieved through an electric telescopic cylinder and an adjustable trimming knife.
It improves trimming accuracy, reduces defective products, improves production efficiency, reduces labor costs, and ensures consistency and flexibility in trimming quality.
Smart Images
Figure CN223369841U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rubber sealing strip production, in particular to an automatic trimming device for a vehicle door rubber sealing strip. Background Art
[0002] Door rubber seals are crucial sealing components in automobiles, primarily used for securing, dustproofing, and sealing the doors. Made primarily of EPDM, a material with excellent elasticity and compression set resistance, these seals not only effectively prevent dust and moisture from entering the vehicle interior, keeping it clean and dry, but also reduce wind noise during driving, enhancing driving comfort. Furthermore, they absorb some of the impact in the event of a collision, protecting the safety of passengers.
[0003] During the production process, burrs may form on the rubber sealing strips of vehicle doors. If these burrs are not removed, they will affect the close fit between the sealing strip and the edge of the vehicle door, thereby reducing its waterproof and dustproof effect. By trimming, the edges of the sealing strip can be smoothed and better integrated with the edge of the vehicle door, thus enhancing its sealing performance while maintaining the aesthetics of the vehicle.
[0004] Due to its softness, the rubber sealing strip of the car door is prone to distortion. Automatic trimming is prone to produce defective sealing strips, resulting in poor sealing. The existing automatic trimming is difficult to achieve. In order to make the sealing strip meet the actual needs of the car door, the current trimming method remains manual trimming, which is labor-intensive and inefficient. Utility Model Content
[0005] The purpose of the utility model is to provide an automatic trimming device for a vehicle door rubber sealing strip, so as to solve the problems raised in the above background technology.
[0006] To achieve the above objectives, the present invention provides the following technical solutions:
[0007] A device for automatically trimming a vehicle door rubber sealing strip, comprising a sealing strip, a sealing strip anti-drift conveying guide assembly, a sealing strip low-temperature device and a trimming assembly. A workbench is provided at the bottom of the sealing strip anti-drift conveying guide assembly, and the sealing strip low-temperature device is located on the workbench on one side of the sealing strip anti-drift conveying guide assembly. The sealing strip anti-drift conveying guide assembly comprises a support seat and an anti-drift guide rod matching the sealing strip structure. The bottom of the anti-drift guide rod is connected to the top of the support seat. When the sealing strip is inserted and located inside the anti-drift guide rod, the outer circumferential wall structure of the sealing strip is tightly matched with the circumferential wall structure of the anti-drift guide rod.
[0008] As a preferred solution of the present invention, the sealing strip low-temperature device includes a low-temperature freezer and a controller. The low-temperature freezer is located on the top of the workbench, the support seat is located on the top of the workbench near the inlet of the low-temperature freezer, and the trimming assembly is located on the top of the workbench on the outlet side of the low-temperature freezer. The sealing strip is connected to the external winding roller in turn through the anti-deviation guide rod and the low-temperature freezer. The controller is embedded in the outer wall of the low-temperature freezer, and the temperature inside the low-temperature freezer is -°C.
[0009] As a preferred solution of the present invention, the trimming assembly includes a fixed block, a fixed rod and a connecting seat, the outer wall on one side of the top of the fixed block is connected to the outer wall of the low-temperature freezer outlet, the fixed block is connected to the connecting seat through the fixed rod, and the outer walls on both sides below the connecting seat are symmetrically inclined and connected with an electric telescopic cylinder, and each output end of the electric telescopic cylinder is connected with a trimming knife for trimming the outer walls on both sides of the end of the sealing strip, and the trimming knife is detachable.
[0010] As a preferred solution of the present invention, the fixing rod is an electric rotating rod that can adjust the angle of the connecting seat, and the bottom output end of the fixing rod is rotatably connected to the connecting seat.
[0011] As a preferred solution of the present invention, the fixing rod is electrically connected to the controller via a wire.
[0012] As a preferred solution of the present invention, the electric telescopic cylinder wire is electrically connected to the controller.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] To address the problems mentioned in the background art, the present invention provides an anti-drift guide rod that matches the structure of the sealing strip, ensuring the stability of the sealing strip during transportation and avoiding inaccurate trimming caused by twisting or displacement. This improves trimming accuracy and the quality of the sealing strip, reducing the production of defective products.
[0015] The low-temperature freezer treats the sealing strips in a low-temperature environment to harden them, making them easier to trim accurately. The low-temperature treatment not only improves the efficiency of trimming, but also ensures the shape stability and dimensional accuracy of the sealing strips after trimming.
[0016] The trimming assembly adopts a structural design of fixed blocks, fixed rods and connecting seats, combined with an electric telescopic cylinder and a detachable trimming knife, to achieve efficient and precise trimming of the ends of the sealing strips, making the trimming process more flexible and controllable, while facilitating maintenance and replacement of the trimming knife.
[0017] The fixed rod is an electric rotating rod that can adjust the angle of the connecting seat, providing more flexibility. The position and angle of the trimming knife can be adjusted according to different trimming requirements, further optimizing the trimming effect.
[0018] By electrically connecting the cryogenic freezer and electric telescopic cylinder to the controller, the entire trimming process is automated, which not only improves production efficiency and reduces labor costs, but also ensures consistent trimming quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a three-dimensional diagram of the overall structure of the utility model;
[0020] Figure 2 This is a schematic diagram of the connection between the anti-drift guide rod and the sealing strip of the utility model;
[0021] Figure 3 This is a schematic diagram of the structure of the trimming assembly of the utility model;
[0022] Figure 4 This is a sectional view of the side structure of the anti-deviating guide rod of the utility model;
[0023] Figure 5 This is a sectional view of the side structure of the sealing strip of the utility model;
[0024] Figure 6 This is a schematic diagram of the structure of the trimming knife and the sealing strip to be trimmed of the utility model.
[0025] In the figure: 1. Sealing strip; 2. Sealing strip anti-drift conveying guide assembly; 21. Workbench; 211. Support seat; 212. Anti-drift guide rod; 3. Sealing strip low-temperature device; 31. Low-temperature freezer; 4. Trimming assembly; 41. Fixing block; 42. Fixing rod; 43. Connecting seat; 44. Electric telescopic cylinder; 45. Trimming knife. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention. Example
[0027] Each device in this application document adopts a conventional model in the prior art, and the control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. It is common knowledge in this field and will not be described in detail here.
[0028] See also Figure 1-6The utility model provides a technical solution: an automatic trimming device for a vehicle door rubber sealing strip, comprising a sealing strip 1, a sealing strip anti-deviation conveying guide assembly 2, a sealing strip low-temperature device 3 and a trimming assembly 4. A workbench 21 is provided at the bottom of the sealing strip anti-deviation conveying guide assembly 2, and the sealing strip low-temperature device 3 is located on the workbench 21 on one side of the sealing strip anti-deviation conveying guide assembly 2. The sealing strip anti-deviation conveying guide assembly 2 comprises a support seat 211 and an anti-deviation guide rod 212 that matches the structure of the sealing strip 1. The bottom of the anti-deviation guide rod 212 is connected to the top of the support seat 211, and the sealing strip 1 is plugged into the anti-deviation guide rod 212. When it is directed into the rod 212, the outer circumferential wall structure of the sealing strip 1 is tightly matched with the circumferential wall structure of the anti-deviation guide rod 212; the sealing strip low-temperature device 3 includes a low-temperature freezer 31 and a controller, the low-temperature freezer 31 is located on the top of the workbench 21, the support seat 211 is located on the top of the workbench 21 near the entrance of the low-temperature freezer 31, the trimming assembly 4 is located on the top of the workbench 21 on the outlet side of the low-temperature freezer 31, the sealing strip 1 is connected to the external winding roller through the anti-deviation guide rod 212 and the low-temperature freezer 31 in turn, the controller is embedded in the outer wall of the low-temperature freezer 31, and the temperature inside the low-temperature freezer 31 is -50°C.
[0029] It should be noted that, in this embodiment, the sealing strip 1 is an object to be processed, which is made of ethylene propylene diene monomer (EPDM) rubber, a soft and elastic material, and is used for sealing the edge of the vehicle door. Since the sealing strip 1 is soft, it is easy to be twisted or deflected during transportation, which makes automatic editing difficult and the efficiency of manual editing low. The present application sets a sealing strip anti-deviation conveying guide assembly 2 on the workbench 21, which includes a support seat 211 and an anti-deviation guide rod 212 that matches the structure of the sealing strip. The design of the anti-deviation guide rod 212 ensures the stability of the sealing strip during transportation, prevents it from being twisted or deflected during movement, and ensures the stability and precise alignment of the sealing strip during transportation.
[0030] Furthermore, the low-temperature freezer 31 is used to cool the sealing strip 1 to a suitable temperature to harden it, which is convenient for subsequent precise trimming. The low-temperature freezer 31 is located on the top of the workbench 21, close to one side of the anti-deviation conveying guide assembly 2. The design of the low-temperature freezer 31 allows the sealing strip 1 to be cooled evenly and quickly when passing through. The sealing strip 1 passes through the anti-deviation guide rod 212 and the low-temperature freezer 31 in sequence, and finally reaches the external winding roller. This process ensures that the sealing strip 1 reaches a suitable hardness before trimming, while maintaining the stability of its shape and size. The controller is embedded in the outer wall of the low-temperature freezer 31 and is used to accurately control the temperature inside the low-temperature freezer. 50℃, through the controller, it can ensure that the sealing strip 1 is trimmed in the best condition, thereby improving product quality and production efficiency. The low-temperature freezer 31 model is TSX40086V and adopts a cascade refrigeration system. The system includes two compressors, which are used as high-temperature and low-temperature compressors respectively. This setting can effectively separate the refrigeration cycles of different temperature levels, improve energy efficiency and cooling speed, and the low-temperature freezer 31 adopts high-efficiency polyurethane insulation material. This material has low thermal conductivity, which can minimize the intrusion of external heat and maintain the stability of the internal temperature. The sealing strip 1 is cooled to a suitable temperature to make it harden, which is convenient for subsequent precise trimming.
[0031] See also Figure 1 、 2 And 6, the trimming assembly 4 includes a fixed block 41, a fixed rod 42 and a connecting seat 43. The outer wall of one side of the top of the fixed block 41 is connected to the outer wall of the outlet of the low-temperature freezer 31. The fixed block 41 is connected to the connecting seat 43 through the fixed rod 42. The outer walls on both sides below the connecting seat 43 are symmetrically inclined and connected with electric telescopic cylinders 44. The output end of each electric telescopic cylinder 44 is connected with a trimming knife 45 for trimming the outer walls on both sides of the end of the sealing strip 1. The trimming knife 45 is detachable; the fixed rod 42 is an electric rotating rod that can adjust the angle of the connecting seat 43. The output end of the bottom of the fixed rod 42 is rotatably connected to the connecting seat 43. The fixed rod 42 is electrically connected to the controller through a wire, and the wire of the electric telescopic cylinder 44 is electrically connected to the controller.
[0032] It should be noted that, in this embodiment, the trimming assembly 4 adopts a structural design of a fixing block 41, a fixing rod 42 and a connecting seat 43, combined with an electric telescopic cylinder 44 and a detachable trimming knife 45, to achieve efficient and precise trimming of the end of the sealing strip. This design makes the trimming process more flexible and controllable, and facilitates maintenance and replacement of the trimming knife.
[0033] Furthermore, the fixed rod 42 serves as an electric rotating rod that can adjust the angle of the connecting seat 43, providing more flexibility. The position and angle of the trimming knife can be adjusted according to different trimming requirements, further optimizing the trimming effect. By electrically connecting the low-temperature freezer 31 and the electric telescopic cylinder 44 to the controller, the entire trimming process is automatically controlled, which not only improves production efficiency and reduces labor costs, but also ensures the consistency of trimming quality.
[0034] The sealing strip 1 enters from the inside of the anti-deviation guide rod 212, is cooled to -50°C by the low-temperature freezer 31, and then is sent to the trimming assembly 4. The controller adjusts the temperature of the low-temperature freezer 31 and controls the movement of the electric telescopic cylinder 44 and the angle adjustment of the fixed rod 42 through the wire. The trimming knife 45 trims the sealing strip under the drive of the electric telescopic cylinder. The completed sealing strip is collected by the winding roller.
[0035] The anti-drift guide rod 212 ensures the stability of the sealing strip 1 during transmission and reduces the problem of inaccurate trimming due to twisting or displacement. The low-temperature treatment hardens the sealing strip, facilitating quick and precise trimming and improving production efficiency. Accurate trimming ensures the quality of the sealing strip and reduces the production of defective products. The application of the controller realizes the automated control of the entire trimming process, reduces labor costs, and ensures the consistency of trimming quality. The adjustable trimming angle and detachable trimming knife 45 design provide more operational flexibility and maintenance convenience. This integrated technical solution significantly improves the production efficiency and product quality of vehicle door rubber sealing strips by combining advanced guiding, cooling and trimming technologies, while reducing labor intensity and production costs.
[0036] The working process of this utility model:
[0037] When in use, the sealing strip 1 enters from the inside of the anti-deviation guide rod 212, passes through the end of the low-temperature freezer 31 and is connected to the external winding roller, and the external winding roller is started to slowly wind it up. It is cooled to -50°C by the low-temperature freezer 31 and then sent to the trimming assembly 4. The controller adjusts the temperature of the low-temperature freezer 31 and controls the action of the electric telescopic cylinder 44 and the angle adjustment of the fixed rod 42 through the wire. The trimming knife 45 trims the outer walls on both sides of the end of the sealing strip 1 under the drive of the electric telescopic cylinder 44. The completed sealing strip is collected by the winding roller.
[0038] The anti-drift guide rod 212 ensures the stability of the sealing strip 1 during transmission and reduces the problem of inaccurate trimming due to twisting or displacement. The low-temperature treatment hardens the sealing strip, facilitating quick and precise trimming and improving production efficiency. Accurate trimming ensures the quality of the sealing strip and reduces the production of defective products. The application of the controller realizes the automated control of the entire trimming process, reduces labor costs, and ensures the consistency of trimming quality. The adjustable trimming angle and detachable trimming knife 45 design provide more operational flexibility and maintenance convenience. This integrated technical solution significantly improves the production efficiency and product quality of vehicle door rubber sealing strips by combining advanced guiding, cooling and trimming technologies, while reducing labor intensity and production costs.
[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An automatic trimming device for a vehicle door rubber sealing strip, comprising a sealing strip (1), a sealing strip anti-deviating conveying guide assembly (2), a sealing strip low-temperature device (3) and a trimming assembly (4), characterized in that: A workbench (21) is provided at the bottom of the sealing strip anti-drift conveying guide assembly (2), and the sealing strip low-temperature device (3) is located on the workbench (21) on one side of the sealing strip anti-drift conveying guide assembly (2). The sealing strip anti-drift conveying guide assembly (2) includes a support seat (211) and an anti-drift guide rod (212) that matches the structure of the sealing strip (1). The bottom of the anti-drift guide rod (212) is connected to the top of the support seat (211). When the sealing strip (1) is inserted and located inside the anti-drift guide rod (212), the outer circumferential wall structure of the sealing strip (1) matches and fits tightly with the circumferential wall structure of the anti-drift guide rod (212).
2. The automatic trimming device for a vehicle door rubber sealing strip according to claim 1, characterized in that: The sealing strip low-temperature device (3) includes a low-temperature freezer (31) and a controller. The low-temperature freezer (31) is located on the top of the workbench (21). The support seat (211) is located on the top of the workbench (21) near the inlet of the low-temperature freezer (31). The trimming assembly (4) is located on the top of the workbench (21) on the outlet side of the low-temperature freezer (31). The sealing strip (1) is connected to the external winding roller through the anti-drift guide rod (212) and the low-temperature freezer (31) in sequence. The controller is embedded in the outer wall of the low-temperature freezer (31). The temperature inside the low-temperature freezer (31) is -50°C.
3. The automatic trimming device for a vehicle door rubber sealing strip according to claim 2, characterized in that: The trimming assembly (4) comprises a fixing block (41), a fixing rod (42) and a connecting seat (43); an outer wall on one side of the top of the fixing block (41) is connected to the outer wall of the outlet of the low-temperature freezer (31); the fixing block (41) is connected to the connecting seat (43) via the fixing rod (42); the outer walls on both sides below the connecting seat (43) are connected in a symmetrical inclined structure and are provided with electric telescopic cylinders (44); the output end of each electric telescopic cylinder (44) is connected to a trimming knife (45) for trimming the outer walls on both sides of the end of the sealing strip (1); and the trimming knife (45) is detachable.
4. The automatic trimming device for a vehicle door rubber sealing strip according to claim 3, characterized in that: The fixing rod (42) is an electric rotating rod capable of adjusting the angle of the connecting seat (43), and the bottom output end of the fixing rod (42) is rotatably connected to the connecting seat (43).
5. The automatic trimming device for a vehicle door rubber sealing strip according to claim 4, characterized in that: The fixing rod (42) is electrically connected to the controller via a wire.
6. The automatic trimming device for a vehicle door rubber sealing strip according to claim 3, characterized in that: The electric telescopic cylinder (44) wire is electrically connected to the controller.