Pre-treatment apparatus for TD coating

Abstract

The utility model belongs to the field of coating technology especially relates to TD coating is with cleaning equipment, the utility model provides a kind of TD coating is with pre -treatment equipment, it includes: rack, at least one drum is connected on the rack, the drum is connected with drive assembly;One combing component is provided with every described drum on the rack;The combing component includes inclined plate, L-shaped plate is fixed on the inclined plate, one side of the L-shaped plate towards drum is provided with primary comb tooth;Wherein, when the drum rotates, the end of primary comb tooth is contacted with the surface of the drum;The utility model is provided with the combing component of primary comb tooth and secondary comb tooth with specific included angle, staggered arrangement, and makes it and drum surface elastic contact, obtains the real-time, on-line, depth self-cleaning ability to cleaning medium, fundamentally solves the industry problem that hard particle inclusion scratches workpiece, reduces the dependence on artificial periodic cleaning and equipment downtime.

Description

Technical Field

[0001] This utility model belongs to the field of coating technology, specifically relating to cleaning equipment for TD coating, and more particularly to pretreatment equipment for TD coating. Background Technology

[0002] In the fields of mechanical manufacturing and surface treatment (automotive parts manufacturing or mold production), before applying wear-resistant coatings (such as TD coatings, coatings, etc.), the workpiece needs to be cleaned in the final stage. This is a key step to ensure the quality of the coating. In this stage, cleaning roller brushes are widely used as an efficient and commonly used surface finishing tool to remove trace amounts of dust, adhering particles and processing residues from the workpiece surface in order to obtain a clean and smooth final surface.

[0003] However, in actual long-term operation, the brush units on the current cleaning roller device are prone to trapping and accumulating hard particles removed from the workpiece surface in the gaps between the brush bristles after continuous use. These residual particles mainly come from the debris generated during the grinding of the coating itself, the detached coarse carbide crystals, or environmental impurities brought in by the previous process.

[0004] Because the material of the brush is usually elastic, its dense bristles, when repeatedly rotating and brushing the workpiece, will firmly trap these extremely hard particles inside like a "catcher". As the roller continues to rotate, these trapped hard particles are not effectively discharged, but instead accumulate in the brush. When subsequent workpieces enter the roller for cleaning, these residual particles hidden in the brush will cause serious secondary damage to the workpiece coating surface, resulting in problems such as workpiece surface scratches and coating damage.

[0005] Therefore, how to avoid the accumulation of particulate matter in the drum due to prolonged lack of cleaning is a technical problem that urgently needs to be solved in this field.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0007] This disclosure provides at least one pretreatment device for TD coating to solve the technical problem of particulate matter being trapped in the roller due to prolonged lack of cleaning.

[0008] This disclosure provides a pretreatment device for TD coating, comprising: a frame, on which at least one roller is connected, and the roller is connected to a drive assembly; a comb assembly is provided on the frame corresponding to each roller; the comb assembly includes an inclined plate, on which an L-shaped plate is fixed, and a primary comb tooth is provided on the side of the L-shaped plate facing the roller; wherein, when the roller rotates, the end of the primary comb tooth contacts the surface of the roller.

[0009] In one alternative embodiment, the inclined plate is provided with secondary comb teeth on the side facing the roller.

[0010] In one alternative implementation, the primary comb teeth and the secondary comb teeth are arranged alternately.

[0011] In one alternative embodiment, the primary comb teeth and the secondary comb teeth form an angle of 30° to 60° with the tangent to the outer surface of the roller.

[0012] In one optional embodiment, the primary and secondary comb teeth are made of wear-resistant rubber.

[0013] In one alternative embodiment, a channel is provided at the connection position between the L-shaped plate and the inclined plate.

[0014] In one alternative embodiment, a baffle is provided on the side of the inclined plate away from the secondary comb teeth, and a chip collection groove is formed between the baffle and the inclined plate.

[0015] In one alternative embodiment, the working surface of the roller is composed of a plurality of raised grinding elements and a flexible fiber layer, wherein the raised grinding elements and the flexible fiber layer are arranged at intervals.

[0016] In one alternative embodiment, the protruding grinding element is a long strip of ceramic with its long side parallel to the axis of the roller.

[0017] In one alternative embodiment, the height of the raised grinding element is higher than the surface of the flexible fiber layer.

[0018] The beneficial effects of this utility model are that it provides a pretreatment device for TD coating, which, by setting a brush assembly with a specific angle and staggered arrangement of primary and secondary comb teeth, and making it elastically contact the roller surface, achieves real-time, online, and deep self-cleaning capability for cleaning media, fundamentally solving the industry problem of hard particles scratching workpieces, reducing the reliance on regular manual cleaning and equipment downtime.

[0019] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A perspective view of a pretreatment device for TD coating provided in an embodiment of this disclosure; Figure 2 This is a perspective view of the comb assembly provided in an embodiment of this disclosure.

[0023] In the picture: 1. Rack; 2. Driver components; 3. Roller; 31. Raised grinding part; 32. Flexible fiber layer; 4. Comb assembly; 41. Inclined plate; 42. Baffle; 43. L-shaped plate; 44. Primary comb teeth; 45. Channel; 46. Secondary comb teeth. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0026] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0028] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0029] Research has revealed the following drawbacks of existing technologies: During long-term operation of the cleaning roller device, the brush bristles on the roller are prone to trapping and accumulating hard particles removed from the workpiece surface after continuous use. These residual particles mainly originate from debris generated during the grinding of the coating itself, large detached carbide crystals, or environmental impurities introduced from previous processes.

[0030] Because the material of the brush is usually elastic, its dense bristles, when repeatedly rotating and brushing the workpiece, will firmly trap these extremely hard particles inside like a "catcher". As the roller continues to rotate, these trapped hard particles are not effectively discharged, but instead accumulate in the brush. When subsequent workpieces enter the roller for cleaning, these residual particles hidden in the brush will cause serious secondary damage to the workpiece coating surface, resulting in problems such as workpiece surface scratches and coating damage.

[0031] Therefore, how to avoid the accumulation of particulate matter in the drum due to prolonged lack of cleaning is a technical problem that urgently needs to be solved in this field.

[0032] The shortcomings of the above solutions are the result of the utility model inventor's practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as contributions made by the utility model inventor to this disclosure.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0035] like Figures 1 to 2 As shown, some embodiments provide a pretreatment device for TD coating, including: a frame 1, at least one roller 3 connected to the frame 1, and a drive assembly 2 connected to the roller 3; the frame 1 serves as the basic support structure of the entire device, possessing sufficient rigidity and stability to ensure that the roller 3 and the comb assembly 4 maintain a precise relative position under high-speed operation and continuous force, which is the basis for ensuring consistent cleaning results; at least one roller 3 is rotatably connected to the frame 1 via standard components such as bearing seats, and the roller 3 is connected to the drive assembly 2; the drive assembly 2 typically consists of a motor, a reducer, and a transmission chain (or belt), which provides stable and adjustable rotational power to the roller 3 to adapt to workpieces of different materials and with different cleanliness requirements.

[0036] A combing assembly 4 is provided on the frame 1 for each roller 3. This "one roller, one combing assembly 4" configuration allows the device to be designed as a single-station independent working mode, or multiple identical units can be integrated in parallel on a production line to achieve simultaneous and parallel cleaning of multiple workpieces, which greatly improves production efficiency and is especially suitable for processing batch workpieces.

[0037] The comb assembly 4 includes an inclined plate 41, on which an L-shaped plate is fixed. The comb assembly 4 is one of the core components of the entire device to achieve the self-cleaning function. It includes an inclined plate 41, which is reliably fixed to the frame 1 by bolts or welding. An L-shaped plate 43 is fixed on the inclined plate 41. The unique design of the L-shaped plate 43 makes it easy to firmly connect one side to the inclined plate 41, while the other side faces the roller 3, providing the best support base for installing the comb teeth. This L-shaped structure creates a stable cantilever, ensuring that the comb teeth will not vibrate or shift when subjected to the continuous reaction force of the roller 3. A primary comb tooth 44 is vertically arranged on the side of the L-shaped plate 43 facing the roller 3. The primary comb tooth 44 is the main force that directly contacts the surface of the roller 3 and performs deep cleaning.

[0038] The L-shaped plate 43 is provided with a primary comb tooth 44 on the side facing the roller 3. When the roller 3 rotates, the end of the primary comb tooth 44 contacts the surface of the roller 3. When the roller 3 rotates under the drive of the drive component 2, the end of the primary comb tooth 44 maintains continuous contact with the surface of the roller 3 with a certain pre-pressure. This contact is not a rigid contact, but a "scraping" or "combing" state with a certain elasticity. The core principle is that when the flexible fiber layer 32 (such as velvet or dense bristles) on the surface of the roller 3 carries hard particles (such as detached TD coating particles and abrasive debris) removed from the workpiece and rotates to the area where it meets the primary comb tooth 44, the comb tooth will insert into the interior of the fiber layer 32. Just like combing hair, it forcibly scrapes out and peels off the particles embedded deep in the fibers, thereby preventing the vicious cycle of particle residue and scratching subsequent workpieces.

[0039] A secondary comb tooth 46 is provided on the side of the inclined plate 41 facing the roller 3. In order to further improve the cleaning effect and debris management capability, a secondary comb tooth 46 is also provided on the side of the inclined plate 41 facing the roller 3, next to the primary comb tooth 44. The secondary comb tooth 46 and the primary comb tooth 44 are arranged alternately in space. This alternate arrangement forms multiple cleaning defenses: longer or more stubborn particles may be loosened by the primary comb tooth 44, but not completely detached. The subsequent secondary comb tooth 46 will comb them again to ensure thorough cleaning. At the same time, the primary comb tooth 44 and the secondary comb tooth 46 are arranged alternately, which avoids the occurrence of cleaning dead corners and makes the cleaning action more uniform in the axial and circumferential directions of the roller 3.

[0040] The primary comb teeth 44 and the secondary comb teeth 46 form an angle of 30° to 60° with the tangent to the outer surface of the roller 3. The comb plane (i.e., the surface of the inclined plate 41) where the primary comb teeth 44 and the secondary comb teeth 46 are located forms an optimal angle with the tangent to the outer surface of the roller 3. This angle is designed to be between 30° and 60°, preferably 45°. This angle is a carefully considered engineering optimization value. If the angle is too small, the comb teeth will penetrate too deeply into the fiber layer, resulting in excessive resistance and increased wear. If the angle is too large, the combing effect will be weakened, turning into slight scratching of the surface, which will not be able to clean deep particles. An angle of about 45° can achieve the best balance between cleaning effect, comb tooth force and the direction of splashing of scraped particles, so that the particles can slide smoothly down the inclined plate 41.

[0041] The primary comb teeth 44 and the secondary comb teeth 46 are made of wear-resistant rubber. Considering that the comb teeth need to continuously rub against the TD coated particles with extremely high hardness, the primary comb teeth 44 and the secondary comb teeth 46 are made of wear-resistant rubber or polyurethane with better performance. These polymer materials have excellent wear resistance, elasticity and certain oil and chemical resistance. Their elasticity ensures that the contact between the comb teeth and the roller surface is "flexible", which can effectively clean without severely abrading the working surface of the roller itself like a metal scraper. Even if a workpiece accidentally collides with the comb teeth, it can play a buffering and protective role.

[0042] A channel 45 is provided at the connection position between the L-shaped plate and the inclined plate 41. At the root of the connection between the L-shaped plate 43 and the inclined plate 41, a channel 45 is specially provided. This channel 45 is not a simple gap, but an important functional design. It serves as the primary discharge channel for particles and dust scraped off by the primary comb teeth 44 and the secondary comb teeth 46. Under the action of centrifugal force and comb tooth scraping force, particles will preferentially move towards this gap, thereby avoiding the accumulation of debris at the root of the comb teeth and causing blockage.

[0043] A baffle 42 is provided on the side of the inclined plate 41 away from the secondary comb teeth 46, forming a chip collection trough between the baffle 42 and the inclined plate 41. A baffle 42 is provided on the side of the inclined plate 41 away from the secondary comb teeth 46 (usually above the roller), and the baffle 42 and the surface of the inclined plate 41 together form a chip collection trough. This chip collection trough is a key part of the entire chip management system. Particles and dust discharged from the channel 45 and sliding off the inclined plate 41 will eventually fall into this chip collection trough and be effectively collected, instead of scattering around the equipment or being brought back into the work area. The chip collection trough can be designed to be detachable for easy regular cleaning, ensuring a clean working environment and long-term stable operation of the equipment.

[0044] The working surface of the drum 3 is composed of several raised grinding parts 31 and flexible fiber layers 32, which are arranged alternately. The working surface of the drum 3 is the core of its cleaning function. Its surface is not composed of a single material, but is a composite working surface composed of several raised grinding parts 31 and flexible fiber layers 32. The raised grinding parts 31 and flexible fiber layers 32 are arranged alternately on the circumference of the drum 3. This "rigid and flexible" design is another major innovation of this device. The raised grinding parts 31 are preferably long strip ceramic parts, because ceramics have extremely high hardness (second only to diamond and cubic boron nitride), which is sufficient to effectively grind the surface of TD coated workpieces and remove larger spatter or burrs. Its long side is parallel to the axis of the drum 3. This layout helps the workpiece to obtain uniform grinding treatment along the axial direction in the drum.

[0045] The raised grinding element 31 is a long strip-shaped ceramic part, with its long side parallel to the axis of the drum 3. The height of the raised grinding element 31 is higher than the surface of the flexible fiber layer 32. The working surface of the drum 3 is the core of its cleaning function. Its surface is not composed of a single material, but is a composite working surface composed of several raised grinding elements 31 and flexible fiber layers 32. The raised grinding elements 31 and flexible fiber layers 32 are arranged at intervals on the circumference of the drum 3. This "rigid and flexible" design is another major innovation of this device. The raised grinding element 31 is preferably a long strip-shaped ceramic part because ceramic has extremely high hardness (second only to diamond and cubic boron nitride), which is sufficient to effectively grind the surface of the TD coated workpiece and remove larger spatter or burrs. Its long side is parallel to the axis of the drum 3. This layout helps the workpiece to obtain uniform grinding treatment along the axial direction in the drum.

[0046] Overall workflow: Feeding: Place the TD-coated workpieces that need to be cleaned into the slowly rotating drum 3; Composite cleaning: The drum 3 is accelerated to the working speed under the drive of the drive component 2. Under the lifting action of centrifugal force, friction force and the raised grinding part 31, the workpiece generates a complex parabolic tumbling motion in the drum. During this process, the surface of the workpiece collides and slides relative to the raised grinding part 31, achieving efficient deburring and removal of large particles. At the same time, the workpiece also undergoes gentle friction with the flexible fiber layer 32, achieving fine polishing and dust adsorption. Synchronous self-cleaning: While the roller 3 is working, the fixed comb assembly 4 continues to work. The first-level comb teeth 44 and the second-level comb teeth 46 are like two precision combs. As the roller rotates, they continuously and deeply "comb" the flexible fiber layer 32 on the surface of the roller, forcibly scraping out the hard particles embedded in it during the cleaning process. Debris collection: The scraped particles and dust are discharged through the channel 45 and slide down the inclined plate 41, and are finally collected in the debris collection trough formed by the baffle 42 and the inclined plate 41. Discharge: After the cleaning cycle is completed, roller 3 reverses or stops to remove the cleaned workpiece. At this time, the surface of the workpiece is smooth, and the roller itself has also been cleaned, ready for the processing of the next batch of workpieces.

[0047] In summary, this embodiment: By setting up a composite roller working surface composed of protruding grinding parts 31 and flexible fiber layers 32 arranged at intervals, efficient and non-destructive cleaning of TD coated workpieces is achieved by integrating "powerful grinding" and "flexible polishing", which significantly improves the surface quality and consistency of the workpieces. By setting up a brush assembly 4 with a specific angle and staggered arrangement of primary comb teeth 44 and secondary comb teeth 46, and making it elastically contact the surface of the roller 3, a real-time, online, and deep self-cleaning capability for the cleaning medium (flexible fiber layer 32) is obtained, which fundamentally solves the industry problem of hard particles scratching the workpiece and reduces the dependence on manual periodic cleaning and equipment downtime. By setting up a channel 45 at the root of the L-shaped plate 43 and a chip collection trough on the inclined plate 41, a highly efficient chip discharge and collection system is formed, which improves the cleanliness of the cleaning process and reduces the frequency of equipment maintenance and the risk of secondary pollution. By setting up a modular unit consisting of a frame 1, a drive assembly 2, a roller 3, and a comb assembly 4, the device can be easily expanded into a multi-station production line, greatly improving batch processing capacity and production efficiency.

[0048] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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.

[0049] 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 orientation or positional relationships, are based on the orientation or positional relationships 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, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0050] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A pretreatment device for TD coating, characterized in that, include: A frame (1) is connected to at least one roller (3), and the roller (3) is connected to a drive assembly (2). A comb assembly (4) is provided on the frame (1) for each of the rollers (3); The comb assembly (4) includes a slant plate (41), an L-shaped plate is fixed on the slant plate (41), and a first-stage comb tooth (44) is provided on the side of the L-shaped plate (43) facing the roller (3). When the roller (3) rotates, the end of the first-stage comb tooth (44) comes into contact with the surface of the roller (3).

2. The pretreatment equipment for TD coating as described in claim 1, characterized in that, The inclined plate (41) is provided with secondary comb teeth (46) on the side facing the roller (3).

3. The pretreatment equipment for TD coating as described in claim 2, characterized in that, The primary comb teeth (44) and the secondary comb teeth (46) are arranged alternately.

4. The pretreatment equipment for TD coating as described in claim 2, characterized in that, The primary comb teeth (44) and the secondary comb teeth (46) form an angle of 30° to 60° with the tangent to the outer surface of the roller (3).

5. The pretreatment equipment for TD coating as described in claim 2, characterized in that, The primary comb teeth (44) and the secondary comb teeth (46) are made of wear-resistant rubber.

6. The pretreatment equipment for TD coating as described in claim 1, characterized in that, A channel (45) is provided at the connection position between the L-shaped plate and the inclined plate (41).

7. The pretreatment equipment for TD coating as described in claim 6, characterized in that, A baffle (42) is provided on the side of the inclined plate (41) away from the secondary comb teeth (46), and a chip collection groove is formed between the baffle (42) and the inclined plate (41).

8. The pretreatment equipment for TD coating as described in claim 7, characterized in that, The working surface of the roller (3) is composed of several raised grinding parts (31) and a flexible fiber layer (32), and the raised grinding parts (31) and the flexible fiber layer (32) are arranged at intervals.

9. The pretreatment equipment for TD coating as described in claim 8, characterized in that, The raised grinding part (31) is a long strip ceramic part, and its long side is parallel to the axis of the roller (3).

10. The pretreatment equipment for TD coating as described in claim 9, characterized in that, The height of the raised grinding element (31) is higher than the surface of the flexible fiber layer (32).

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