A surface treatment device for an injection molding part of an air outlet of an automobile air conditioner

Abstract

The utility model relates to injection molding piece processing technical field especially is a kind of automobile air conditioner air outlet injection molding piece surface treatment device, including shell, the inside installation of shell has protective drive component, and the below of protective drive component is installed and polishes mechanism;Protective drive component includes central gear, and central gear rotation is arranged at the center inside shell, and the both sides of central gear are engaged and are connected with linkage rack, and the outside fixed of linkage rack has connecting box, and the outside installation of connecting box has buffer protection piece, and the below of buffer protection piece is installed and is guided to frame;Buffer protection piece includes two protective seats, and two protective seats are respectively fixed and set in the both ends of guide frame inboard, and the side corresponding to two protective seats is fixed with tension spring, in the utility model, effectively avoid polishing mechanism frequent, fast impact grating board junction, reduce injection molding piece damage risk, improve surface treatment security and product pass rate.

Description

Technical Field

[0001] This utility model relates to the field of injection molding processing technology, specifically to a surface treatment device for injection molding parts of automotive air conditioning vents. Background Technology

[0002] In the automotive air conditioning manufacturing industry, the injection molded parts for large-sized air conditioning vents installed on the ceiling of bus bodies consist of several equally spaced parallel grilles. The surface treatment of these injection molded parts (especially the deburring of the inner wall of the grilles) is a key link to ensure product quality. In the existing technology, the commonly used processing method is to fix the air outlet injection molded part with a clamp, and use a strip grinding strip adapted to the grille to drive the grinding strip to move frequently along the grille direction to remove burrs. However, this method has significant drawbacks. The drive device needs to drive the grinding strip to reciprocate at high frequency. During the process, the grinding strip will inevitably hit the connection of the grille plate frequently and quickly, especially near the end of the grille plate. Because the distance between the end connection is small and the material of the injection molded part is relatively fragile, frequent impacts can easily damage the connection, leading to an increase in the product scrap rate. Therefore, a surface treatment device for injection molded parts of automotive air conditioning vents is proposed to address the above problems. Utility Model Content

[0003] The purpose of this utility model is to provide a surface treatment device for injection molded parts of automotive air conditioning vents, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A surface treatment device for injection-molded parts of automotive air conditioning vents includes a housing. A protective drive assembly is installed inside the housing, and a grinding mechanism is installed below the protective drive assembly. The protective drive assembly includes a central gear rotatably positioned at the center inside the housing. A linkage rack is meshed with both sides of the central gear. A connecting box is fixed to the outside of the linkage rack, and a buffer protective component is installed outside the connecting box. A guide frame is installed below the buffer protective component. The buffer protective component includes two protective seats, each fixed at one end of the inner side of the guide frame. A tension spring is fixed to one corresponding side of each of the two protective seats. A support frame is fixed to the bottom of each of the two protective seats. A spring component slides along the inner side of the support frame, and a connecting block is fixed to the front end of the spring component.

[0005] As a further optimization of this utility model, the grinding mechanism includes two rubber supports, which are fixedly disposed at the bottom of the connecting box. An arc-shaped grinding seat is fixed at the bottom of the two rubber supports. The two ends of the arc-shaped grinding seat are arc-shaped. The two arc-shaped grinding seats are parallel to each other. There is a gap between the upper surface of the arc-shaped grinding seat and the lower surface of the housing. An inner grinding layer is bonded to the bottom of the outer wall of the arc-shaped grinding seat. The bottom of the arc-shaped grinding seat is a planar structure. A planar grinding layer is bonded and fixed to the bottom of the arc-shaped grinding seat.

[0006] As a further optimization of this utility model, the rubber support is a two-section cylinder, the top of the rubber support slides in conjunction with the inside of the guide frame, and the bottom of the rubber support extends to the lower part of the outer shell.

[0007] As a further optimization of this utility model, one end of each of the two tension springs is fixedly connected to the center of both ends of the connecting box, the included angle between the support frame and the protective seat is 90°, and the outer side of the support frame is fixedly connected to the bottom of the inner side of the guide frame.

[0008] As a further optimization of this utility model, the connecting block is slidably disposed inside the support frame, and the front end of the connecting block is provided with a connecting groove for adapting to the rubber support member. The connecting block and the spring member are located on the same central axis.

[0009] As a further optimization of this utility model, the two linkage racks are symmetrically distributed around the central gear. The top of one of the linkage racks is fixed with a linkage ring by a connecting rod. The two ends of the linkage ring are arc-shaped. The linkage ring is rotatably fitted with a drive shaft. The center of the top of the drive shaft and the center of the central gear are located on the same central axis.

[0010] As a further optimization of this utility model, the top of the housing is fixed with a cover plate by bolts, a drive motor is fixed at the center of the top of the cover plate, the drive shaft of the drive motor is fixedly connected to the top of the drive shaft, and handles are fixed on both sides of the upper surface of the drive motor.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the protective drive assembly utilizes a central gear and a linkage rack transmission, combined with elastic buffers such as tension springs, to achieve rhythm control of "slow grinding at both ends and fast grinding in the middle." At the same time, the rubber support and buffer protection components work together to provide secondary buffering of impact force and disperse and absorb energy, effectively preventing the grinding mechanism from frequently and rapidly impacting the grid plate connection, reducing the risk of damage to injection molded parts, and improving the safety of surface treatment and the product qualification rate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded structural diagram of the entire utility model; Figure 3 This is a schematic diagram of the structure of the protective drive assembly of this utility model; Figure 4 This is a partial structural schematic diagram of the buffer protective component of this utility model; Figure 5 This is a schematic diagram of the grinding mechanism of this utility model; Figure 6 This is a schematic diagram of the back structure of the present invention.

[0013] In the diagram: 1. Housing; 2. Protective drive assembly; 21. Central gear; 22. Linkage rack; 23. Connecting box; 24. Buffer protection component; 241. Protective base; 242. Tension spring; 243. Bearing frame; 244. Spring component; 245. Connecting block; 25. Guide frame; 26. Linkage ring; 27. Drive shaft; 3. Grinding mechanism; 31. Rubber support; 32. Arc-shaped grinding seat; 33. Inner grinding layer; 34. Flat grinding layer; 4. Cover plate; 5. Drive motor; 6. Handle. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Please see Figures 1-6 This utility model provides a technical solution: A surface treatment device for injection-molded parts of automotive air conditioning vents includes a housing 1. A protective drive assembly 2 is installed inside the housing 1, and a grinding mechanism 3 is installed below the protective drive assembly 2. The protective drive assembly 2 includes a central gear 21, which is rotatably located at the center inside the housing 1. A linkage rack 22 is meshed with both sides of the central gear 21. A connecting box 23 is fixed to the outside of the linkage rack 22. A buffer protective member 24 is installed on the outside of the connecting box 23. A guide frame 25 is installed below the buffer protective member 24. The buffer protective member 24 includes two protective seats 241, which are respectively fixed at both ends of the inner side of the guide frame 25. A tension spring 242 is fixed on the corresponding side of each of the two protective seats 241. A support frame 243 is fixed to the bottom end of the two protective seats 241. A spring member 244 slides on the inner side of the support frame 243. A connecting block 245 is fixed to the front end of the spring member 244. The polishing mechanism 3 includes two rubber support members 31, which are fixedly installed at the bottom of the connecting box 23. An arc-shaped polishing seat 32 is fixed at the bottom of the two rubber support members 31. The two ends of the arc-shaped polishing seat 32 are arc-shaped. The two arc-shaped polishing seats 32 are parallel to each other. There is a gap between the upper surface of the arc-shaped polishing seat 32 and the lower surface of the housing 1. An inner polishing layer 33 is bonded to the bottom of the outer wall of the arc-shaped polishing seat 32. The bottom end of the arc-shaped polishing seat 32 is a flat structure. A flat polishing layer 34 is bonded to the bottom end of the arc-shaped polishing seat 32. It should be noted that the housing 1 provides the basic load-bearing structure, the protective drive component 2 achieves power transmission and smooth drive through gear meshing and elastic buffering, and the grinding mechanism 3 is adapted to the structure of the automotive air conditioning vent grille, solving the problem of frequent impact damage in traditional grinding. The transmission of the central gear 21, the linkage rack 22, etc., combined with the elastic constraint of the buffer protective component 24, provides a smooth and precise solution for the surface treatment of large-size grille panels.

[0017] As a further implementation of this solution, the rubber support 31 is a two-section cylinder. The top of the rubber support 31 slides in conjunction with the inside of the guide frame 25, and the bottom of the rubber support 31 extends to the lower part of the outer shell 1. It should be noted that the two-section rubber support 31 slides with the guide frame 25 at the top to ensure movement stability, and extends at the bottom to connect the grinding mechanism 3 and the protective drive component 2. The rubber material uses its own elasticity to buffer the impact force during grinding, absorb the vibration during the transmission process, further protect the injection molded parts from rigid impact, and improve the softness and safety of the surface treatment. As a further implementation of this solution, one end of each of the two tension springs 242 is fixedly connected to the center of each end of the connecting box 23, the included angle between the support frame 243 and the protective seat 241 is 90°, and the outer side of the support frame 243 is fixedly connected to the bottom of the inner side of the guide frame 25. It should be noted that the tension spring 242 connects the connecting box 23 and the protective seat 241, providing elastic constraints for the movement of the connecting box 23. When the linkage rack 22 drives the connecting box 23 to move, the tension spring 242 generates tension when it is close to the end, balancing the moving load and reducing the speed, so that the movement of the connecting box 23 presents a controllable rhythm of "slow at both ends and fast in the middle", avoiding rapid impact at the end to damage the injection molded part and ensuring the stability of the surface treatment process. As a further implementation of this solution, the connecting block 245 is slidably disposed inside the bearing frame 243, and the front end of the connecting block 245 is provided with a connecting groove for adapting to the rubber support 31. The connecting block 245 and the spring 244 are located on the same central axis. It should be noted that the connecting block 245 works in conjunction with the spring 244. When the rubber support 31 moves to the end of the connecting block 245 to squeeze the connecting groove, the connecting block 245 drives the spring 244 to slide within the support frame 243, dispersing and absorbing the impact force, effectively reducing the end impact force, protecting the injection molded part connection, and improving the reliability of the device's protection. As a further implementation of this scheme, two linkage racks 22 are symmetrically distributed around the central gear 21. The top of one of the linkage racks 22 is fixed with a linkage ring 26 by a connecting rod. The two ends of the linkage ring 26 are arc-shaped. The drive shaft 27 is rotated inside the linkage ring 26. The center of the top of the drive shaft 27 and the center of the central gear 21 are located on the same central axis. It should be noted that the symmetrically distributed linkage rack 22 ensures synchronous and reverse transmission, and the linkage ring 26 rotates in conjunction with the drive shaft 27, converting the rotation of the drive motor 5 into the up-and-down cyclic movement of the linkage rack 22, thereby realizing the reciprocating grinding action of the grinding mechanism 3. The arc-shaped linkage ring 26 is adapted to the gear transmission trajectory, and the coaxial design of the drive shaft 27 ensures accurate power transmission, which is the key transmission conversion structure for driving the grinding operation. As a further implementation of this solution, a cover plate 4 is fixed to the top of the housing 1 by bolts, a drive motor 5 is fixed at the center of the top of the cover plate 4, the drive shaft of the drive motor 5 is fixedly connected to the top of the drive shaft 27, and handles 6 are fixed on both sides of the upper surface of the drive motor 5. It should be noted that the drive motor 5 provides the power source, and the handle 6 facilitates hand operation by the staff, realizing the combination of manual control of device movement and grinding operation, and improving the portability and operational flexibility of the device.

[0018] Work process: The injection molded parts of the car air conditioning vents are arranged in parallel with multiple grilles at equal intervals. They are fixed on the workbench with external clamps. The worker holds the handle 6 and moves the device to align the arc-shaped grinding seat 32 of the grinding mechanism 3 with the grille. The inner grinding layer 33 is attached to the inner wall of the grille, and the flat grinding layer 34 is aligned with the flat surface of the grille. The position of the housing 1 is adjusted to ensure accurate grinding. When the drive motor 5 is started, the transmission shaft drives the drive shaft 27 to rotate. The drive shaft 27 and the linkage ring 26 rotate in coordination. Since the linkage ring 26 is fixed to the linkage rack 22 on one side through the connecting rod, when the drive shaft 27 rotates one revolution, the linkage ring 26 drives the linkage rack 22 to move linearly along the central gear 21 to achieve meshing transmission. The central gear 21 drives the linkage rack 22 on the other side to move synchronously in the opposite direction, so that the two linkage racks 22 can move up and down in one cycle. When the linkage rack 22 moves, it drives the connecting box 23 and the rubber support 31 to move synchronously, thereby causing the arc-shaped grinding seat 32 of the grinding mechanism 3 to move back and forth along the direction of the grid plate. The inner grinding layer 33 grinds the burrs on the inner wall of the grid plate, and the flat grinding layer 34 treats the flat surface of the grid plate to complete the surface treatment operation. When the connecting box 23 moves to the end of the guide frame 25, one end of the connecting box 23 presses against the connecting groove of the connecting block 245. The connecting block 245 drives the spring 244 to slide and buffer within the support frame 243. At the same time, the connecting box 23 pulls the corresponding side tension spring 242. The tension spring 242 deforms and generates tension, balancing the moving load of the connecting box 23, reducing its moving speed, and avoiding rapid impact at the end that could damage the injection molded part. When the connecting box 23 moves to the middle of the guide frame 25, the tension springs 242 on both sides are balanced, reducing the resistance of the tension to the movement of the connecting box 23. The moving speed of the connecting box 23 increases, improving the grinding efficiency of the middle area of ​​the grating plate and achieving rhythm control of "slow grinding at both ends and fast grinding in the middle". The drive motor 5 runs continuously, and the linkage rack 22 drives the grinding mechanism 3 to reciprocate and grind until the surface of the grating is treated. Then the drive motor 5 is turned off, and the connecting box 23, under the elastic restoring force of the tension spring 242, drives the linkage rack 22 and the grinding mechanism 3 back to the initial position, completing one work cycle. After processing one injection molded part, the worker uses the handle 6 to move the device, cleans the grinding debris on the grinding mechanism 3, and checks the wear of the inner grinding layer 33 and the flat grinding layer 34. If the next injection molded part needs to be processed, the above process is repeated to achieve continuous surface treatment operation.

[0019] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surface treatment device for injection molded parts of automotive air conditioning vents, comprising a housing (1), characterized in that: The protective drive assembly (2) is installed inside the housing (1), and a grinding mechanism (3) is installed below the protective drive assembly (2). The protective drive assembly (2) includes a central gear (21), which is rotatably disposed at the center inside the housing (1). Both sides of the central gear (21) are meshed with a linkage rack (22). A connecting box (23) is fixed to the outside of the linkage rack (22). A buffer protective component (24) is installed on the outside of the connecting box (23). A guide frame (25) is installed below the buffer protective component (24). The buffer protection component (24) includes two protective seats (241), which are respectively fixed at both ends of the inner side of the guide frame (25). A tension spring (242) is fixed on one side of each of the two protective seats (241). A support frame (243) is fixed at the bottom of the two protective seats (241). A spring (244) slides on the inner side of the support frame (243). A connecting block (245) is fixed at the front end of the spring (244).

2. The surface treatment device for injection molded parts of automotive air conditioning vents according to claim 1, characterized in that: The polishing mechanism (3) includes two rubber support members (31), which are fixedly installed at the bottom of the connecting box (23). An arc-shaped polishing seat (32) is fixed at the bottom of the two rubber support members (31). The two ends of the arc-shaped polishing seat (32) are arc-shaped. The two arc-shaped polishing seats (32) are parallel to each other. There is a gap between the upper surface of the arc-shaped polishing seat (32) and the lower surface of the shell (1). An inner polishing layer (33) is bonded to the bottom of the outer wall of the arc-shaped polishing seat (32). The bottom of the arc-shaped polishing seat (32) is a planar structure. A planar polishing layer (34) is bonded to the bottom of the arc-shaped polishing seat (32).

3. The surface treatment device for injection molded parts of automotive air conditioning vents according to claim 2, characterized in that: The rubber support (31) is a two-section cylinder. The top of the rubber support (31) slides in conjunction with the inside of the guide frame (25), and the bottom of the rubber support (31) extends to the outside of the housing (1).

4. The surface treatment device for injection molded parts of automotive air conditioning vents according to claim 1, characterized in that: One end of each of the two tension springs (242) is fixedly connected to the center of both ends of the connecting box (23). The included angle between the support frame (243) and the protective seat (241) is 90°. The outer side of the support frame (243) is fixedly connected to the bottom of the inner side of the guide frame (25).

5. The surface treatment device for injection molded parts of automotive air conditioning vents according to claim 1, characterized in that: The connecting block (245) is slidably disposed inside the support frame (243). The front end of the connecting block (245) is provided with a connecting groove for adapting to the rubber support member (31). The connecting block (245) and the spring member (244) are located on the same central axis.

6. The surface treatment device for injection molded parts of automotive air conditioning vents according to claim 1, characterized in that: The two linkage racks (22) are symmetrically distributed around the central gear (21). The top of one of the linkage racks (22) is fixed with a linkage ring (26) by a connecting rod. The two ends of the linkage ring (26) are arc-shaped. The internal rotation of the linkage ring (26) is fitted with a drive shaft (27). The center of the top of the drive shaft (27) and the center of the central gear (21) are located on the same central axis.

7. The surface treatment device for injection molded parts of automotive air conditioning vents according to claim 1, characterized in that: The top of the housing (1) is fixed with a cover plate (4) by bolts. A drive motor (5) is fixed at the center of the top of the cover plate (4). The drive shaft of the drive motor (5) is fixedly connected to the top of the drive shaft (27). Handles (6) are fixed on both sides of the upper surface of the drive motor (5).

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