Surface treatment device for direct molding of pet foam automobile roof

Abstract

The utility model relates to car roof surface treatment equipment technical field especially PET foam car roof direct forming surface treatment device, its technical scheme includes handheld polisher, still includes the first polishing head of swing joint in the one end of handheld polisher, the inside of first polishing head is equipped with second polishing head, installs rebound mechanism that makes second polishing head from first polishing head inside automatic release in first polishing head. The utility model utilizes the cooperation of first polishing head, second polishing head, rebound mechanism and operating mechanism etc. structure, makes two polishing heads of handheld polisher can need flexible alternate switching. In the use process, do not need to stop machine dismounts and installs, avoids the step of frequently changing polishing head, greatly reduces time loss, avoids work process interruption. Whether it is the large -area polishing of car roof or detail part processing, can quickly convert polishing head, realizes efficient operation, significantly promotes overall polishing efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive roof surface treatment equipment, and in particular to a direct molding surface treatment device for PET foam automotive roofs. Background Technology

[0002] PET foam headliners are automotive interior components made of PET (polyethylene terephthalate) foam. After molding, PET foam headliners typically require polishing machines to smooth and polish uneven areas to achieve the designed smoothness and finish. Current technology necessitates the use of different sized tools for polishing, given the complex shapes and varying characteristics of different parts of the headliner. Small tools are used for precise work on details, while larger tools are used for larger areas to improve efficiency. However, current polishing machines require frequent head changes, a time-consuming process involving specific steps. Especially when large-area polishing and detail work alternate, frequent head changes repeatedly interrupt the workflow, significantly reducing overall polishing efficiency. Utility Model Content

[0003] The purpose of this invention is to address the problem that in the existing technology, the shape of the car roof after molding is complex and requires polishing with tools of different sizes. However, the existing polishing machines require frequent head changes, which is time-consuming and seriously affects the overall efficiency of alternating large-area and detailed processing. The invention proposes a surface treatment device for direct molding of PET foam car roofs.

[0004] The technical solution of this utility model is: a PET foam car roof direct molding surface treatment device, including a handheld polishing machine, and further including: a first grinding head movably connected to one end of the handheld polishing machine, the first grinding head having a second grinding head inside; a spring mechanism installed in the first grinding head to automatically release the second grinding head from the first grinding head; and an operating mechanism, which is set in the first grinding head to manually drive and switch the spring mechanism.

[0005] Optionally, the operating mechanism includes a pinch rod slidably connected to a first grinding head and symmetrically arranged therein. The second grinding head has a pair of telescopic slots at one end inserted into the first grinding head, and a pair of sliding slots for locking the pinch rod at the end of the second grinding head near the telescopic slots. A pair of positioning slots are provided inside one of the telescopic slots, and a card block that is locked into the positioning slot is fixedly connected to the outer wall of the end of the pinch rod near the sliding slot.

[0006] Optionally, the operating mechanism further includes a second spring disposed in the middle of the sliding slot, the two ends of the second spring being fixedly connected to the corresponding pinch rod ends.

[0007] Optionally, each of the card insert blocks has a spherical head at the end away from the pinch lever.

[0008] Optionally, the rebound mechanism includes a pair of first springs disposed inside the first grinding head. One end of each of the first springs is fixedly connected to the inner wall of the corresponding telescopic slot, and the other end of each of the first springs is fixedly connected to the inner wall of the first grinding head. A pair of symmetrically arranged limiting grooves are provided inside the first grinding head, and a pair of limiting sliders that are engaged in the limiting grooves are fixedly connected to the outer wall of the second grinding head.

[0009] Optionally, the end of the pinch rod away from the second spring is provided with a chamfered pinch head that abuts against the hand.

[0010] Optionally, a second polishing pad is fixedly connected to the end of the second polishing head away from the handle, and a first polishing pad is fixedly connected to the end of the first polishing head away from the handheld polisher.

[0011] Optionally, the pair of telescopic slots and the first spring are symmetrically arranged with the second spring as the center.

[0012] In summary, this application includes at least one of the following beneficial technical effects:

[0013] This invention utilizes the coordination of a first grinding head, a second grinding head, a rebound mechanism, and an operating mechanism to allow for flexible and alternating switching between the two grinding heads of a handheld polisher as needed. No stopping the machine for disassembly and installation is required during use, avoiding frequent grinding head changes, significantly reducing time consumption, and preventing workflow interruptions. Whether polishing large areas of a car roof or handling detailed areas, the grinding heads can be quickly switched for efficient operation and a significant improvement in overall polishing efficiency. Attached Figure Description

[0014] Figure 1 A schematic diagram of the surface treatment device for direct molding of PET foam automotive headliners according to this utility model is provided;

[0015] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the first grinding head in the middle;

[0016] Figure 3 for Figure 2 Partial structural diagram;

[0017] Figure 4 for Figure 3 A schematic diagram of the structure viewed from below.

[0018] Reference numerals: 1. Handheld polisher; 2. First polishing head; 21. Pinch rod; 210. Insert block; 22. Chamfering pinch head; 23. First spring; 24. First polishing pad; 25. Limiting groove; 3. Second polishing head; 31. Telescopic groove; 301. Second polishing pad; 32. Sliding groove; 33. Positioning groove; 34. Second spring; 35. Limiting slider. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0020] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0021] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example

[0026] like Figures 1 to 4 As shown, the PET foam car headliner direct molding surface treatment device proposed in this utility model includes a handheld polisher 1. A first grinding head 2 is movably connected to one end of the handheld polisher 1. The first grinding head 2 is used for large areas of the car headliner. A second grinding head 3 is located inside the first grinding head 2. The second grinding head 3 is used when the first grinding head 2 is too large to reach the designated area. A second grinding pad 301 is fixedly connected to the end of the second grinding head 3 away from the pinch rod 21, and a first grinding pad 24 is fixedly connected to the end of the first grinding head 2 away from the handheld polisher 1. Both the first grinding pad 24 and the second grinding pad 301 are made of sponge material. Because PET foam is relatively soft, and the sponge grinding pad has good flexibility and elasticity, it can conform well to the surface of the headliner. Different densities of sponge pads can be selected as needed to finely grind or remove minor surface imperfections without damaging the PET foam, achieving a better surface smoothness and gloss.

[0027] Among them, such as Figures 1 to 4 As shown, the first grinding head 2 is equipped with a manual-driven switch-return mechanism. The mechanism includes a slidably connected pinch rod 21 symmetrically arranged within the first grinding head 2. Each pinch rod 21 has a chamfered pinch head 22 at the end furthest from the second spring 34, which abuts against the hand. The chamfered pinch head 22 removes the sharp edges of the pinch rod 21, preventing fingers from being scratched by sharp edges during pressing and protecting the integrity of the finger skin. The second grinding head 3 has a pair of telescopic slots 31 at one end inserted into the first grinding head 2. The end of the second grinding head 3 near the telescopic slots 31 also has a pair of sliding slots 32 that hold the pinch rod 21. One of the telescopic slots 31 has a pair of positioning slots 33 inside. A locking block 210 that engages with the positioning slot 33 is fixedly connected to the outer wall of the end of the pinch rod 21 near the sliding slot 32.

[0028] Secondly, such as Figure 4As shown, the operating mechanism also includes a second spring 34 disposed in the middle of the sliding slot 32. The second spring 34 allows the pair of pinch rods 21 to automatically return to their original positions after being pressed, so that the operation can be repeated. The two ends of the second spring 34 are fixedly connected to the ends of the corresponding pinch rods 21.

[0029] In addition, such as Figure 4 As shown, each end of the insert block 210 away from the pinch lever 21 is provided with a spherical head. The spherical head serves as a strength guide, allowing the insert block 210 to move smoothly and quickly when it is inserted into the positioning slot 33.

[0030] It is worth noting that, such as Figures 2 to 4 As shown, a spring mechanism is installed inside the first grinding head 2 to automatically release the second grinding head 3 from the first grinding head 2. The spring mechanism includes a pair of first springs 23 disposed inside the first grinding head 2. The first springs 23 allow the second grinding head 3 to automatically release when it is not stuck inside the first grinding head 2, and the spring force of the first springs 23 is relatively large, thus ensuring that the second grinding head 3, after being released from the first grinding head 2, will not easily retract into the first grinding head 2 when subjected to the resisting force during operation. When the second grinding head 3 is pressed back into the first grinding head 2, it needs to be pressed with force (for example, by pressing the end of the second grinding head 3 against the ground, the first grinding head 2 will be pressed down by its own weight, which will cause the first springs 23 to retract). A pair of telescopic slots 31 and a first spring 23 are symmetrically arranged with the second spring 34 as the center. One end of the first spring 23 is fixedly connected to the inner wall of the corresponding telescopic slot 31, and the other end of the first spring 23 is fixedly connected to the inner wall of the first grinding head 2. A pair of symmetrically arranged limiting slide grooves 25 are opened inside the first grinding head 2. A pair of limiting sliders 35 that are inserted into the limiting slide grooves 25 are fixedly connected to the outer wall of the second grinding head 3. The limiting sliders 35 slide by being inserted into the limiting slide grooves 25 to ensure that the second grinding head 3 has a stroke that is too long or too short when it comes out of the first grinding head 2.

[0031] In this embodiment, when using the PET foam car roof direct molding surface treatment device, after turning on the handheld polisher 1, the first polishing head 2 drives the first polishing pad 24 to rotate, thereby allowing the first polishing pad 24 to polish a large area of ​​the car roof. When the first polishing pad 24 cannot polish due to its large contact area, simply press the chamfered pinch heads 22 at the ends of a pair of pinch rods 21 into the first polishing head 2, causing the pinch rods 21 to retract into the first polishing head 2. At this time, the ends of the pinch rods 21 drive the locking blocks 210 to disengage from the positioning slots 33, thereby preventing one end of the second polishing head 3 from being locked by the locking blocks 210. Immediately afterwards, the second polishing head 3 will be subjected to the elastic thrust of a pair of first springs 23, causing the second polishing head 3 to drive one end of the second polishing pad 301 out. Meanwhile, the second grinding head 3 will slide within the limiting groove 25 via a pair of limiting sliders 35 on its outer wall until the limiting sliders 35 slide to their limit and lock onto the inner wall of one end of the limiting groove 25. At this point, the first spring 23 tightly locks the second grinding head 3 and the second grinding pad 301, thereby polishing the areas of the car roof that the first grinding pad 24 cannot reach through the second grinding pad 301 at the end of the second grinding head 3. When it is necessary to use the first grinding pad 24 to polish the car roof again, the above operation can be reversed, which will not be elaborated here. You can use either the first grinding head 2 or the second grinding head 3 as needed, which is convenient and quick.

[0032] The preferred embodiments of this utility model described above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A device for surface treatment of a directly formed PET foam roof of a vehicle, comprising a hand-held polisher (1), characterized in that, Also include: The first polishing head (2) is movably connected to one end of the handheld polisher (1), and the second polishing head (3) is arranged in the first polishing head (2); The rebound mechanism is arranged in the first polishing head (2) to automatically release the second polishing head (3) from the first polishing head (2); The operating mechanism is arranged in the first polishing head (2) to manually drive the rear switch rebound mechanism; The operating mechanism includes a pair of symmetrically arranged pinch rods (21) slidably connected in the first polishing head (2), one end of the second polishing head (3) inserted into the first polishing head (2) is provided with a pair of telescopic clamping grooves (31), and the end of the second polishing head (3) close to the telescopic clamping grooves (31) is also provided with a pair of sliding clamping grooves (32) for clamping the pinch rods (21). One of the telescopic clamping grooves (31) is internally provided with a pair of positioning clamping grooves (33), and the end of the pinch rod (21) close to the sliding clamping groove (32) is fixedly connected with a clamping block (210) clamped in the positioning clamping groove (33). The operating mechanism further includes a second spring (34) arranged in the middle of the sliding clamping groove (32), and the two ends of the second spring (34) are fixedly connected with the corresponding ends of the pinch rod (21). The rebound mechanism includes a pair of first springs (23) arranged in the first polishing head (2), one end of the first spring (23) is fixedly connected with the inner wall of the corresponding telescopic clamping groove (31), and the other end of the first spring (23) is fixedly connected with the inner wall of the first polishing head (2). The first polishing head (2) is internally provided with a pair of symmetrically arranged limiting sliding grooves (25), and the outer wall of the second polishing head (3) is fixedly connected with a pair of limiting sliding blocks (35) clamped in the limiting sliding grooves (25).

2. The PET foam vehicle headliner direct molding surface treatment apparatus according to claim 1, characterized by, The end of the clamping block (210) away from the pinch rod (21) is provided with a spherical head.

3. The PET foam vehicle headliner direct molding surface treatment apparatus of claim 1, wherein, The end of the pinch rod (21) away from the second spring (34) is provided with a chamfered pinch head (22) abutting against the hand.

4. The PET foam vehicle headliner direct molding surface treatment apparatus of claim 1, wherein, The end of the second polishing head (3) away from the pinch rod (21) is fixedly connected with a second polishing pad (301), and the end of the first polishing head (2) away from the handheld polisher (1) is fixedly connected with a first polishing pad (24).

5. The PET foam vehicle headliner direct molding surface treatment apparatus of claim 1, wherein, The pair of telescopic clamping grooves (31) and the first spring (23) are symmetrically arranged with the second spring (34) as the center.

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