Roller for coating primer on two sides of gasket

Abstract

The utility model relates to the technical field of gasket coating, and particularly discloses a roller for coating primer on two sides of a gasket. Comprising a rack, a first roller, a second roller and a third roller, and roller shafts are arranged in the rollers respectively. The rollers are arranged according to the height sequence, and bearing seats are arranged on the two sides of the rack and correspond to the roller shafts. Bearing seats at two ends of the first roll shaft and the third roll shaft are provided with limiting seats and moving rods, so that sliding connection is realized, and adjustment is realized through the moving rods. Bearing seats at the two ends of the first roller shaft and the third roller shaft are provided with limiting seats and moving rods; a first mounting plate and a second mounting plate are arranged on the two sides of the rack, shaft holes are formed in the plates and matched with roll shafts, and the height of the shaft holes of the first roll shaft and the third roll shaft can be adjusted. The three rollers are arranged, and two gaskets can be machined at the same time; the first roller and the third roller are arranged in an adjustable mode through the first roller shaft and the third roller shaft, so that the interval between the first roller and the second roller and the interval between the third roller and the second roller are adjustable, and gaskets of different sizes can be adapted.

Description

Technical Field

[0001] The utility model relates to the technical field of coated gaskets, in particular to a double-sided coating roller for gaskets. Background Art

[0002] Coating is the process of applying one or more layers of coating to various substrates. This process is used in a wide range of applications, including construction, plastics, metals, paper, and textiles. The purpose of coating is to protect the substrate surface from physical, chemical, or biological damage, while also improving its performance, such as increasing its abrasion resistance, water resistance, and corrosion resistance. Coating requires specialized equipment and tools, such as coaters, spray guns, and brushes, as well as the selection of appropriate coating materials, such as paints, coatings, and adhesives. Coating requirements and standards vary depending on the application and the nature of the coating. Coating is a crucial surface treatment technology that plays a vital role in many industries.

[0003] In the engine industry, cylinder gaskets are subject to significant mechanical and thermal stresses in high-temperature, high-pressure operating environments. A smooth gasket surface can reduce the possibility of gas or liquid leakage and ensure stable internal engine pressure and temperature. Furthermore, coating materials typically possess high chemical stability, preventing chemical reactions between the gasket and the cylinder block or other metal components, thereby avoiding corrosion and wear. Coated gaskets significantly improve their wear resistance, sealing, corrosion resistance, and service life, reducing the frequency of repairs and replacements while ensuring stable engine system operation and enhancing overall vehicle performance.

[0004] In the patent "A coating mechanism of a coating machine" (publication number CN218251162U, hereinafter referred to as prior art 1), a coating mechanism using a roller for coating is disclosed. Prior art 1 sets a pair of rollers at both ends of the coating mechanism. In prior art 1, the plate-like object enters the gap inside the coating roller through the coating roller, and the plate-like object is coated with paint. The mechanism in prior art 1 cooperates with the conveying component and the coating roller to coat the entering plate-like object. However, the installation position of the coating roller in prior art 1 is fixed, and it cannot be adaptively adjusted when encountering plate-like objects of different sizes. The roller can only be replaced, which is more troublesome and reduces the processing efficiency. It is also necessary to purchase rollers of different sizes as backup, which leads to an increase in processing costs. In addition, two rollers are used in prior art 1, and only one plate-like object can be processed at a time, which is less efficient. Utility Model Content

[0005] In view of this, an embodiment of the present invention provides a double-sided base glue coating roller for gaskets, which is used to solve the problem in the prior art that the roller cannot be adaptively adjusted according to the thickness of the gasket, and the roller needs to be replaced when encountering gaskets of different thickness sizes, resulting in low processing efficiency and increased costs.

[0006] The embodiment of the utility model provides a double-sided rubber coating roller for a gasket, comprising a frame and a first roller, a second roller and a third roller arranged on the frame; a first roller shaft, a second roller shaft and a third roller shaft are respectively provided in the first roller, the second roller and the third roller; the first roller, the second roller and the third roller are arranged in order from high to low; bearing seats corresponding to the two ends of the first roller shaft and the third roller shaft are respectively provided on both sides of the frame; the bearing seats at both ends of the first roller shaft and the third roller shaft are provided with limit seats and moving rods; the bearing seats at both ends of the first roller shaft and the third roller shaft are slidably connected to the limit seats; the moving rod is connected to one end of the bearing seats at both ends of the first roller shaft and the third roller shaft; a first mounting plate and a second mounting plate are respectively provided on both sides of the frame; the first mounting plate and the second mounting plate are both provided with axial holes at positions adapted to the first roller shaft, the second roller shaft and the third roller; the axial holes of the first roller shaft and the third roller shaft are provided with height adjustment.

[0007] Preferably, the frame is composed of a plurality of support rods, which are assembled to form a through-going arrangement inside, and the first roller, the second roller and the third roller are installed through the through-going portion of the frame.

[0008] Preferably, a driving mechanism is provided on one side of the outside of the frame; the driving mechanism includes a motor, and a driving wheel is provided on the output shaft of the motor; the first roller and the third roller are both provided with driven wheels on the side close to the motor; the driven wheels are fixedly connected to the first roller and the third roller.

[0009] Preferably, a tensioning wheel is also provided at the position where the driven wheel of the third roller is provided; the driving wheel, tensioning wheel and driven wheel are arranged alternately; the motor connects the driven wheel, tensioning wheel and driving wheel of the first roller and the third roller through a chain.

[0010] Preferably, the bearing seats at both ends of the first roller and the third roller are movable seats; the movable seats slide relative to the grooves provided on the limit seats through the provided protrusions; the limit seats are fixed on the frame.

[0011] Preferably, the limiting seat includes a first limiting block and a second limiting block; the first limiting block and the second limiting block are both provided with limiting protrusions; the positions of the limiting protrusions of the first limiting block and the second limiting block are the limit positions of the movable seat.

[0012] Preferably, by adjusting the relative position of the movable seat and the second roller, the gap between the first roller and the third roller and the second roller increases or decreases.

[0013] Preferably, a material receiving box is further provided at the bottom of the frame; the material receiving box covers the positions of the first roller, the second roller and the third roller.

[0014] Preferably, the first roller and the third roller are arranged in opposite directions.

[0015] Preferably, the position of the movable seat is adjusted by connecting the movable rod to a hand wheel or a cylinder.

[0016] The double-sided rubber-coated roller for gaskets provided by the utility model has the following beneficial effects:

[0017] The height adjustment function of the first and third rollers allows the equipment to adapt to the processing of gaskets of different sizes. When gaskets of different sizes need to be processed, the operator can easily change the height of the first and third rollers by adjusting the movable rod so that the distance between them and the second roller reaches the required size. In addition, the utility model is equipped with three rollers, the top and bottom rollers rotate, and the middle roller is stationary, so that the equipment can process two gaskets at the same time, improving its processing efficiency. A limit seat is also provided for the adjustment of the first and third rollers, so that they can only slide within the limit seat and will not exceed the position of the limit seat, ensuring safety when adjusting the distance between the first and third rollers and the second roller. The limit seat can also prevent excessive movement of the roller shaft, avoiding damage to the equipment or injury to personnel. This equipment has good adaptability and flexibility. It can adapt to different coating operation requirements according to different gasket thicknesses and sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work, and these are all within the scope of protection of the present invention.

[0019] Figure 1 This is a schematic diagram of the front structure of a double-sided gasket coating roller;

[0020] Figure 2 It is a schematic diagram of the side structure of a double-sided gasket coating roller;

[0021] Figure 3 It is a schematic diagram of the back structure of a double-sided gasket coating roller;

[0022] Parts and numbers in the picture:

[0023] 100-frame, 110-first mounting plate, 120-second mounting plate, 140-support rod, 150-material receiving box;

[0024] 210 - first roller, 211 - first roller shaft, 220 - second roller, 221 - second roller shaft, 230 - third roller, 231 - third roller shaft, 240 - bearing seat, 241 - moving seat, 250 - limiting seat, 251 - first limiting block, 252 - second limiting block, 253 - limiting protrusion, 260 - moving rod, 270 - driven wheel;

[0025] 310-motor, 311-chain, 330-tensioner, 331-mounting base. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, elements defined by the phrase "comprises..." do not exclude the presence of additional identical elements in the process, method, article, or device that includes the elements. If there is no conflict, the embodiments of the present invention and the various features therein may be combined with each other and are all within the scope of protection of the present invention.

[0027] Example 1

[0028] See Figure 1The present invention provides a double-sided primer coating roller for gaskets, comprising a frame 100 and a first roller 210, a second roller 220, and a third roller 230 mounted on the frame 100. The first roller 210, the second roller 220, and the third roller 230 are mounted and supported by the frame 100, allowing them to operate under the support of the frame 100. A certain passage gap is provided between the first roller 210, the second roller 220, and the third roller 230. During processing, the gasket passes through the gap between the first roller 210, the second roller 220, and the third roller 230, and the coating or removal of excess coating is completed between the two rollers.

[0029] The first roller 210, second roller 220, and third roller 230 are each equipped with a first roller shaft 211, a second roller shaft 221, and a third roller shaft 231. It should be noted that the first roller 210, the second roller 220, and the third roller 230 are three key components, each equipped with a first roller shaft 211, a second roller shaft 221, and a third roller shaft 231. These roller shafts are securely connected to the rollers, ensuring stability and reliability during operation. This ensures that when the first roller shaft 211, the second roller shaft 221, and the third roller shaft 231 rotate, they effectively drive the first roller 210 and the third roller 230 to rotate accordingly based on the second roller 220.

[0030] Furthermore, the first roller 210, the second roller 220, and the third roller 230 are each equipped with specialized components that allow for both coating and scraping off excess paint. These components are used separately, allowing each operation to either apply paint or scrape off excess paint. To perform the other operation, the components on the first roller 210, the second roller 220, and the third roller 230 need to be replaced. This arrangement enables efficient and flexible coating operations. This is crucial for improving production efficiency and reducing production costs, making our coating equipment more competitive in the market. The coating component can be a coating roller made of a soft and wear-resistant material. The coating roller is typically cylindrical and fits tightly with the roller shaft inside the roller, allowing it to rotate smoothly when driven by the shaft. The coating roller's surface is often specially treated, such as with micropores or grooves, to enhance the absorption and release of paint, ensuring even distribution of the paint on the surface being coated.

[0031] Furthermore, the component for removing excess paint can be a sponge adsorbent or a cotton adsorbent, etc. The adsorbent has a good adsorption effect. When the gasket passes through the rollers, both sides of the gasket are adsorbed by the adsorbents on the first roller 210, the second roller 220 and the third roller 230, respectively, to complete the removal of excess paint. In the coating operation, the flexible use of the coating roller and the adsorbent can greatly improve the efficiency and accuracy of the coating operation. First, the coating roller evenly applies the paint on the surface to be coated, and then the scraper or scraper of another device follows closely to scrape off the excess paint to ensure that the thickness and uniformity of the coating meet the requirements. This mode of operation can not only save the use of paint and reduce costs, but also improve the quality of the coating and extend its service life.

[0032] The first roller 210, second roller 220, and third roller 230 are arranged in descending order. The height difference between the first roller 210, second roller 220, and third roller 230 can be adjusted as needed to accommodate gaskets of varying thicknesses and sizes. This design allows the gasket to maintain a stable posture as it passes through the rollers, ensuring uniform coating and effective removal of excess paint.

[0033] See Figure 1 , bearing seats 240 corresponding to the two ends of the first roller 211 and the third roller 231 are respectively provided on both sides of the frame 100. The two ends of the second roller 221 are provided on the frame 100 and are fixedly installed on the frame 100. The second rotating drum 220 is fixedly arranged compared to the frame 100. Both ends of the first roller 211 and the third roller 231 are provided in the bearing seats 240, and the first roller 211 and the third roller 231 can rotate based on their bearing seats 240. The second roller 221 serves as an intermediate wheel to assist the first roller and the second roller, helping the first roller and the second roller to complete the extrusion work, and can also operate through two gaskets at the same time.

[0034] See Figure 2The bearing seats 240 at both ends of the first roller 211 and the third roller 231 are each provided with a limit seat 250 and a moving rod 260. The moving seat 241 helps the bearing seats 240 at both ends of the first roller 211 and the third roller 231 to move, so that the spacing between the first roller 211 and the third roller 231 and the second roller increases or decreases. The bearing seats 240 at both ends of the first roller 211 and the third roller 231 are slidably connected to the limit seat 250. Only with a sliding connection can the bearing seats 240 move within the limit seat 250 to achieve the purpose of adjustment. The moving rod 260 is connected to one end of the bearing seats 240 at both ends of the first roller 211 and the third roller 231. By connecting the moving rod 260 to the bearing seat 240, the bearing seat 240 can be adjusted by driving the moving rod 260. The function of the limiting seat 250 is to set a limit for the movement of the bearing seat 240 to ensure that it is precisely adjusted within a specific range without exceeding the predetermined range.

[0035] See Figure 2 The movable base 241 solves the problem of adjusting the gap between the first roller 211, the third roller 231, and the second roller. This allows for flexible control of the gap size, allowing for increased spacing to facilitate processing of materials of varying thicknesses, or decreased spacing to ensure precision when processing thin materials. This adjustment mechanism ensures the equipment can adapt to various operating conditions during operation, improving production flexibility and efficiency.

[0036] See Figure 2 Furthermore, a sliding connection is employed between the bearing seat 240 and the limit seat 250 at both ends of the first roller 211 and the third roller 231. This sliding connection ensures that the bearing seat 240 can move freely within the limit seat 250, greatly facilitating adjustment. In this manner, the operator can easily control the position of the bearing seat 240, thereby optimizing equipment performance. A movable rod 260 is connected to one end of the bearing seat 240. By applying an external force to the movable rod 260, the bearing seat 240 can be quickly and effectively adjusted.

[0037] The frame 100 is provided with a first mounting plate 110 and a second mounting plate 120 on either side. These two mounting plates are important components of the frame 100 and their presence makes the frame 100 more functional and more convenient to use. The first mounting plate 110 and the second mounting plate 120 can not only mount the first roller 210, the second roller 220, and the third roller 230, but also all the bearing seats 240, providing a stable operating environment for these components and ensuring the normal operation of the machine. In addition, since the frame 100 itself has a limited number of mounting locations and the frame 100 is an open frame, it is necessary to install some auxiliary mounting components on the frame 100. These components not only assist in installation but also increase the strength of the overall structure of the frame 100, thereby improving the stability and durability of the frame 100. In this way, the frame 100 can not only meet various installation requirements but also ensure the stability and safety of the installation, providing a reliable working platform for coating processing operations.

[0038] See Figure 1 The first mounting plate 110 and the second mounting plate 120 described are both provided with axial holes at positions where they are compatible with the first roller 211, the second roller 221 and the third roller 231. The provision of these axial holes enables the first roller 211 and the third roller 231 to be adjusted in position through them, thereby adjusting the spacing distance between the first roller 210, the second roller 220 and the third roller 230. This design makes the operation more flexible and can adapt to different production needs. The axial hole of the second roller 221 remains unchanged because the position of the second roller 221 is fixed and cannot be adjusted. All adjustments are based on the fixed position of the second roller 220, and adjustments are made based on the position of the second roller 220.

[0039] Example 2

[0040] See Figure 1 The embodiment of the present invention provides a double-sided coating roller for gaskets. The frame 100 is composed of a plurality of support rods 140. After being assembled, the support rods 140 are arranged to be through-connected inside. The first roller 210, the second roller 220, and the third roller 230 are installed and arranged through the through-connected part of the frame 100. After being assembled, these support rods 140 form an internal cavity portion. This cavity portion runs through the entire frame 100 structure and provides a mounting location. In this frame 100 structure, the first roller 210, the second roller 220, and the third roller 230 are installed in order from high to low. These three rollers are all installed through the cavity portion of the frame 100, ensuring effective connection and coordinated work between the rollers.

[0041] See Figure 3 A driving mechanism is provided on one side of the exterior of the frame 100; the driving mechanism includes a motor 310, and a driving wheel is provided on the output shaft of the motor 310; the first roller 211 and the third roller 231 are both provided with a driven wheel 270 on the side close to the motor 310; the driven wheel 270 is fixedly connected to the first roller 211 and the third roller 231; the driving wheel, the tensioning wheel 330 and the driven wheel 270 are staggered.

[0042] See Figure 3 The first roller 211, the second roller 221, and the third roller 231 are arranged from high to low, with their axes aligned on the same vertical line. During transmission, the first roller 210 and the third roller 230 must be arranged in opposite directions to the second roller 220 to properly convey the gasket from one end to the other. Therefore, the driven wheels 270 on the first roller 211, the second roller 221, and the third roller 231 cannot be directly connected.

[0043] Therefore, by staggering the driving wheel, tensioning wheel 330, and driven wheel 270 and connecting them via a chain 311 along a predetermined path, the first roller 211 and the third roller 231 are arranged in opposite directions, allowing them to transport the gasket inward for processing. When the first roller 210 and the third roller 230 rotate, the gasket is drawn into the gaps between the first roller 210 and the second roller 220, and between the third roller 230 and the second roller 220, and processed. At this time, the second roller 220 remains stationary, while the first roller 210 and the third roller 230 rotate relative to the second roller 220.

[0044] Furthermore, since the device changes the positions of the first roller 210 and the third roller 230, the tension of the chain 311 changes, and the tension is adjusted by the tensioning wheel 330. The tensioning wheel 330 is mounted on a mounting base 331, and the mounting base 331 is provided with multiple mounting positions for the tensioning wheel 330. By changing the mounting position of the tensioning wheel 330, the tension of the chain 311 is changed.

[0045] See Figure 2 and Figure 3 The bearing seats 240 at both ends of the first roller 211 and the third roller 231 are movable seats 241; the movable seats 241 slide relative to the grooves set on the limit seats 250 through the set protrusions; the limit seats 250 are fixed on the frame 100.

[0046] Furthermore, the bearing seats 240 at both ends of the first roller 211 and the third roller 231 are designed as movable seats. These movable seats 241 slide relative to each other through the protrusions preset thereon and the corresponding grooves on the limit seats 250. The limit seats 250 are firmly mounted on the frame 100. This design allows the first roller 211 and the third roller 231 to move relatively smoothly during operation. At the same time, the cooperation between the limit seats 250 and the movable seats 241 ensures precise positioning of the movement, preventing equipment damage or operational errors caused by exceeding the set range.

[0047] See Figure 2 The limiting seat 250 includes a first limiting block 251 and a second limiting block 252; the first limiting block 251 and the second limiting block 252 are both provided with a limiting protrusion 253; the position of the limiting protrusion 253 of the first limiting block 251 and the second limiting block 252 is the limit position of the movable seat 241.

[0048] Specifically, the positions of the limiting protrusions 253 on the first limiting block 251 and the second limiting block 252 are precisely defined as the limit positions of the movable seat 241. This means that when the movable seat 241 is adjusting its position, the position to which it moves forward or backward will be limited by the protrusions on the two limiting blocks, ensuring that the movable seat 241 can accurately reach the preset limit position, thereby ensuring the operational safety of the entire device and preventing the adjustment from exceeding the limit position due to the lack of a limit. This design not only improves the stability and reliability of the equipment, but also makes the operation process simpler. The user can easily judge the position of the movable seat 241 by observing the limiting protrusions 253 on the limiting seat 250, and then proceed to the next step of the operation. By adjusting the relative position of the movable seat 241 and the second roller 220, the gap between the first roller 210 and the third roller 230 and the second roller 220 increases or decreases.

[0049] Preferably, a material receiving box 150 is further provided at the bottom of the frame 100 ; the material receiving box 150 covers the positions of the first roller 210 , the second roller 220 and the third roller 230 .

[0050] See Figure 1 The bottom of the frame 100 is also equipped with a material receiving box. This box is located at the bottom of the first roller 210, the second roller 220, and the third roller 230, effectively covering the positions of these rollers. This not only ensures that the materials that fall after processing will not pollute the working environment, but also allows the materials to be recycled and reused.

[0051] Preferably, one end of the gap between the first roller 210 and the third roller 230 and the second roller 220 is the feed port for the gasket, and the other end is the discharge port.

[0052] The first roller 210 and the third roller 230 are connected to the ends of the second roller 220 respectively, forming a narrow gap between them. At both ends of the device, at this gap, a connecting mechanism can be set to transport and connect the gasket.

[0053] Preferably, the position of the movable seat 241 is adjusted by connecting the movable rod 260 to a handwheel or a cylinder. The position adjustment of the movable seat 241 can be achieved by the movable rod 260 connected to the handwheel or the cylinder. This mechanism allows the operator to drive the movement of the movable rod 260 by manually rotating the handwheel or by applying air pressure to the cylinder, thereby adjusting the specific position of the movable seat 241. Such a design provides flexibility for operation while also ensuring the precise positioning of the movable seat 241. Whether it is a handwheel or a cylinder, they provide stable force and displacement control, so that the movable seat 241 can move according to the predetermined trajectory and accuracy. During the adjustment process, the response speed and strength of the handwheel or cylinder can be adjusted according to actual needs to adapt to different operating environments and requirements.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A double-sided rubber-coated roller for gaskets, characterized in that: The invention comprises a frame (100) and a first roller (210), a second roller (220) and a third roller (230) arranged on the frame (100); a first roller shaft (211), a second roller shaft (221) and a third roller shaft (231) are respectively arranged in the first roller (210), the second roller (220) and the third roller (230); the first roller (210), the second roller (220) and the third roller (230) are arranged in descending order; Bearing seats (240) corresponding to the two ends of the first roller (211) and the third roller (231) are respectively provided on both sides of the frame (100); the bearing seats (240) at the two ends of the first roller (211) and the third roller (231) are provided with limit seats (250) and moving rods (260); the bearing seats (240) at the two ends of the first roller (211) and the third roller (231) are slidably connected to the limit seats (250); the moving rod (260) is connected to one end of the bearing seats (240) at the two ends of the first roller (211) and the third roller (231); A first mounting plate (110) and a second mounting plate (120) are respectively provided on both sides of the frame (100); the first mounting plate (110) and the second mounting plate (120) are both provided with shaft holes at positions adapted to the first roller (211), the second roller (221) and the third roller; and the shaft holes of the first roller (211) and the third roller are provided with height adjustment means.

2. The double-sided rubber coating roller for gaskets according to claim 1, characterized in that: The frame (100) is composed of a plurality of support rods (140). After being assembled, the support rods (140) are internally connected. The first roller (210), the second roller (220) and the third roller (230) are installed through the connected portion of the frame (100).

3. The double-sided rubber coating roller for gaskets according to claim 1, characterized in that: A driving mechanism is provided on one side of the exterior of the frame (100); the driving mechanism comprises a motor (310), and a driving wheel is provided on the output shaft of the motor (310); the first roller (211) and the third roller (231) are both provided with a driven wheel (270) on a side close to the motor (310); and the driven wheel (270) is fixedly connected to the first roller (211) and the third roller (231).

4. The double-sided rubber coating roller for gaskets according to claim 3, characterized in that: A tensioning wheel (330) is also provided at the position where the driven wheel (270) is provided on the third roller (230); the driving wheel, the tensioning wheel (330) and the driven wheel (270) are arranged in a staggered manner; and the motor (310) connects the first roller shaft (211), the driven wheel (270) of the third roller shaft (221), the tensioning wheel (330) and the driving wheel via a chain (311).

5. The double-sided rubber coating roller for gaskets according to claim 1, characterized in that: The bearing seats (240) at both ends of the first roller (211) and the third roller (231) are movable seats (241); the movable seats (241) slide relative to the grooves provided on the limiting seats (250) through the provided protrusions; the limiting seats (250) are fixed on the frame (100).

6. The double-sided rubber coating roller for gaskets according to claim 5, characterized in that: The limiting seat (250) comprises a first limiting block (251) and a second limiting block (252); the first limiting block (251) and the second limiting block (252) are both provided with limiting protrusions (253); the positions of the limiting protrusions (253) of the first limiting block (251) and the second limiting block (252) are the limit positions of the movable seat (241).

7. The double-sided rubber coating roller for gaskets according to claim 6, characterized in that: By adjusting the relative position of the movable seat (241) and the second roller (220), the gaps between the first roller (210) and the third roller (230) and the second roller (220) are increased or decreased.

8. The double-sided rubber coating roller for gaskets according to claim 1, characterized in that: A material receiving box (150) is also provided at the bottom of the frame (100); the material receiving box (150) covers the positions of the first roller (210), the second roller (220) and the third roller (230).

9. The double-sided rubber coating roller for gaskets according to claim 4, characterized in that: The first roller (210) and the third roller (230) are arranged in opposite directions.

10. The double-sided rubber coating roller for gaskets according to claim 1, characterized in that: The position of the movable seat (241) is adjusted by connecting the movable rod (260) to a hand wheel or a cylinder.

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