Extrusion device for impregnation and extrusion process thereof

Abstract

This invention discloses an extrusion device and its extrusion process for adhesive coating using a glue-penetrating method, relating to the field of adhesive coating technology. Specifically, it includes the following steps: S1, the extruder continuously outputs a continuous rubber material, which enters the separation mechanism of the guiding assembly; under the drive of motor one, the dividing plate precisely separates the rubber material into an upper layer and a lower layer at a preset angle; the upper layer of rubber material is guided by a triangular guide plate to a second conveying channel, and then conveyed to the inner cavity of a second pressing mechanism. The arc-shaped plate of the second pressing mechanism guides the rubber material to adhere to the surface of the second roller, while the elastic limiting roller presses the upper layer of rubber material tightly against the surface of the second roller through spring force, preventing it from falling off during conveying. By having the belt core pass around the first, second, and third rollers in an "S" shape, combined with a precisely set roller gap, the extrusion and degassing of the belt core and rubber material is achieved, effectively removing most of the air bubbles between the rubber material and the belt core, significantly improving the density of the coating layer, and reducing the risk of delamination later.

Description

Technical Field

[0001] This invention belongs to the field of coating technology, specifically an extrusion device and extrusion process for coating by dip coating. Background Technology

[0002] In the production of belt-core products such as conveyor belts and transmission belts, the rubber coating process is a key step in improving the wear resistance and tensile strength of the products. Its core requirements are to achieve a tight bond between the rubber material and the belt core, a uniform rubber layer without bubbles, and adaptability to the production of multiple specifications of products.

[0003] However, in practical use, the existing overcoating process often uses the method of directly passing the belt core through the roller. When the rubber material comes into contact with the belt core, it is easy to trap air. Moreover, the roller gap setting lacks a targeted compression ratio design, which cannot effectively remove air bubbles. This results in pores inside the overcoating layer, which can easily lead to cracking and delamination after long-term use, affecting the product's service life. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention proposes an extrusion device and its extrusion process for adhesive diffusion coating.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] An extrusion process for adhesive impregnation coating specifically includes the following steps:

[0007] S1. The extruder continuously outputs a continuous stream of rubber material, which enters the separation mechanism of the guide assembly.

[0008] Driven by a motor, the dividing plate precisely separates the adhesive material into an upper layer and a lower layer at a preset angle.

[0009] The upper layer of rubber material is guided to the second conveying channel by the triangular guide plate, and then conveyed to the inner cavity of the second pressing mechanism. The arc plate of the second pressing mechanism guides the rubber material to adhere to the surface of the second roller. At the same time, the elastic limiting roller presses the upper layer of rubber material onto the surface of the second roller through the spring force to prevent it from falling off during the conveying process.

[0010] The lower layer of rubber material is guided to the first conveying channel by the triangular guide plate, and then conveyed to the inner cavity of the first pressing mechanism. The arc plate guides the rubber material to adhere to the surface of the third roller. Under the elastic action of the first spring, the limiting roller presses the lower layer of rubber material tightly onto the surface of the third roller, ensuring that the rubber material and the roller are tightly adhered.

[0011] During the rubber material conveying process, the limiting plate of the limiting component limits the rubber material in both directions to prevent the rubber material from deviating and ensure that the rubber material is always in the central area.

[0012] S2. The core enters the inner cavity through the input hole of the mounting shell. After being limited and calibrated by the positioning roller group, it maintains a stable conveying state and moves into the gap between the first roller and the second roller. Then it moves out from the gap between the second roller and the third roller, forming an "S"-shaped rubber wrapping method.

[0013] The upper layer of rubber material on the surface of the No. 2 roller comes into contact with the working surface of the belt core as the roller rotates;

[0014] The lower layer of rubber material on the surface of the No. 3 roller comes into contact with the other working surface of the belt core as the roller rotates;

[0015] Relying on the extrusion force generated by the preset roller gap, the rubber material is squeezed and penetrated into the gap between the core fibers, while most of the air bubbles between the rubber material and the core are forcibly discharged, so as to achieve the initial tight bonding between the rubber material and the core on the working surface.

[0016] S3. Adjust the roller gap between roller 4 and roller 3 to be the same as the thickness of the rubber material by using a hydraulic cylinder, so that the lower layer of rubber material completes secondary shearing and kneading before extrusion, ensuring the uniformity of the rubber material.

[0017] Simultaneously, the speeds of rollers one, two, three, and four are set, and the rubber material is calendered and bonded to the working surface of the core through extrusion force, achieving precise double-sided rubber coating of the core.

[0018] S4. After the double-sided coated core is recalibrated by two guide rollers, it is smoothly output from the output hole of the mounting shell and enters the subsequent cooling and shaping process to finally form the coated finished product.

[0019] In the aforementioned extrusion process for coating by infiltration, the speed ratio of the fourth roller in step S3 is 0.85, the speed ratio of the third roller is 1.05, the speed of the second roller is the reference speed, and the speed ratio of the first roller is 1.

[0020] An extrusion device is also provided, through which the aforementioned extrusion process for adhesive impregnation is processed. The extrusion device includes a base, an installation frame is provided at the upper end of the base, and an extrusion component is provided in the middle of the inner cavity of the installation frame for extruding the adhesive material into the gaps between the core fibers.

[0021] The upper part of the inner cavity of the mounting frame is provided with a guide assembly for guiding and conveying the rubber material to the extrusion component. The guide assembly is adapted to the extrusion component and the upper part of the guide assembly extends to the outside of the mounting frame.

[0022] Limiting components are provided on both sides of the outer surface of the guide assembly to restrict the adhesive material to the center position.

[0023] In the aforementioned extrusion device, the mounting frame includes a mounting shell, which is fixedly mounted on the upper end of two bases. The upper part of the outer surface of the mounting shell has a mounting hole, the upper part of one side of the outer surface of the mounting shell has an output hole, the top of the mounting shell has an input hole, a positioning roller group is provided in the inner cavity of the mounting shell near the input hole, and two guide roller groups are provided in the inner cavity of the mounting shell near the output hole.

[0024] In the aforementioned extrusion device, the extrusion component includes two mounting plates, which are fixedly installed in the inner wall of the mounting shell. A first roller is rotatably mounted on the lower part of the two mounting plates, a second roller is rotatably mounted on the lower side of the middle part of the two mounting plates, a third roller is rotatably mounted on the upper side of the middle part of the two mounting plates, and a fourth roller is rotatably mounted on the upper part of the two mounting plates. A hydraulic cylinder is provided on the upper part of the outer surface of each of the two mounting plates, and the extended ends of the two hydraulic cylinders are rotatably connected to both sides of the outer surface of the fourth roller.

[0025] In the aforementioned extrusion device, the guide assembly includes two fixed plates, and guide mechanisms are provided on both sides of the outer surface of the two fixed plates. A separation mechanism is provided on the upper part of the guide mechanism, and a pressing mechanism one is provided on the lower part of the guide mechanism near the third roller. A pressing mechanism two is provided on the lower part of the guide mechanism near the second roller. The pressing mechanism two has the same structure as the pressing mechanism one.

[0026] In the aforementioned extrusion device, the guiding mechanism includes a first conveying channel, and a second conveying channel is provided above the first conveying channel. Both the first conveying channel and the second conveying channel are fixedly installed on the outer surfaces of two fixed plates.

[0027] In the aforementioned extrusion device, the separation mechanism includes a Y-shaped tube fixedly mounted on a fixed plate, and the Y-shaped tube is respectively connected to conveying channel one and conveying channel two. A motor is provided on the outer surface of the Y-shaped tube on one side, a triangular guide plate is provided on the inner side of the Y-shaped tube, a dividing plate is rotatably mounted on the middle of the triangular guide plate, and the output end of the motor is fixedly connected to the end face of the dividing plate.

[0028] In the aforementioned extrusion device, the pressing mechanism includes a guide frame, which is fixedly installed on the lower part of the outer surface of the conveying channel. Positioning plates are provided on both sides of the outer surface of the guide frame. The inner surfaces of the two positioning plates are rotatably connected to the outer surfaces of the third roller. An arc-shaped plate is provided at the lower part of the guide frame. Multiple limiting holes are arrayed on the outer surface of the arc-shaped plate. Limiting elements are provided in the middle of the inner cavity of the multiple limiting holes. A glue storage tank is provided inside the guide frame.

[0029] The limiting component includes two U-shaped plates, both of which are fixedly installed on the outer surface of the arc-shaped plate. A connecting plate is slidably installed in the middle of the inner cavity of each of the two U-shaped plates. Multiple springs are provided on the upper end face of the two connecting plates and the top wall of the inner cavity of the U-shaped plate. The lower part of each of the two connecting plates extends through corresponding limiting holes into the inner cavity of the arc-shaped plate. A limiting roller is rotatably installed on the lower part of the two connecting plates.

[0030] In the aforementioned extrusion device, the limiting component includes a transmission component, which is fixedly installed on the middle of the upper outer surface of the mounting shell. The protruding end of the transmission component is provided with a threaded rod, and both ends of the threaded rod extend to the outside of the mounting shell. The threads on both sides of the outer surface of the threaded rod are in opposite directions. Both sides of the outer surface of the threaded rod are threadedly connected to connecting members. The ends of the two connecting members that are close to each other extend into the interior of conveying channel one and conveying channel two. Each end of the two connecting members that are close to each other is provided with a limiting plate two.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. In this invention, by passing the core of the belt around the first, second and third rollers in an "S" shape, and with the precise setting of the roller gap, the core of the belt and the rubber material are squeezed and de-bubbled, which effectively removes most of the air bubbles between the rubber material and the core of the belt, significantly improves the density of the rubber layer, and reduces the risk of delamination in the later stage.

[0033] 2. In this invention, the speed ratio difference between the fourth roller and the third roller is set to 0.85:1.05, so that the rubber material completes secondary shearing and kneading before being calendered to the core. At the same time, the separation mechanism can adjust the angle of the dividing plate by the motor to precisely control the thickness ratio of the upper and lower layers of rubber material, thus doubly ensuring uniform distribution of rubber material and improving the stability of the coating quality.

[0034] 3. In this invention, the pressing mechanism configured in the guide component makes the rubber material adhere tightly to the roller surface through elastic pressing action, so as to avoid the rubber material falling off or shifting during the conveying process and ensure the accurate implementation of the subsequent extrusion and penetration process. Attached Figure Description

[0035] Figure 1 This is a three-dimensional structural diagram of the extrusion device in this invention;

[0036] Figure 2 This is a sectional view of the mounting frame in the extrusion device;

[0037] Figure 3 This is a schematic diagram of the extrusion component in the extrusion device;

[0038] Figure 4 This is a schematic diagram of the guide assembly in the extrusion device;

[0039] Figure 5 This is a schematic diagram of the core conveyor in the extrusion unit;

[0040] Figure 6 This is a schematic diagram of the pressing mechanism 1 in the extrusion device. Figure 1 ;

[0041] Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point A in the middle;

[0042] Figure 8 A schematic diagram of the pressing mechanism in the extrusion device. Figure 2 ;

[0043] Figure 9 This is a schematic diagram of the limiting component in the extrusion device;

[0044] Figure 10 This is a schematic diagram of the separation mechanism in the extrusion device;

[0045] Figure 11 This is a schematic diagram of the core conveyor in an existing extrusion device.

[0046] Legend: 1. Base; 2. Mounting frame; 21. Mounting shell; 22. Mounting hole; 23. Output hole; 24. Input hole; 25. Positioning roller group; 26. Guide roller group one; 3. Extrusion component; 31. Mounting plate one; 32. Roller No. 1; 33. Roller No. 2; 34. Roller No. 3; 35. Roller No. 4; 36. Hydraulic cylinder; 4. Guide assembly; 41. Fixing plate; 42. Guide mechanism; 421. Conveying channel one; 422. Conveying channel two; 43. Separation mechanism; 431 432. Y-shaped through pipe; 433. Motor 1; 434. Triangular guide plate; 435. Dividing plate; 446. Pressing mechanism 1; 447. Guide frame; 448. Positioning plate; 449. Arc plate; 440. Limiting hole; 441. Limiting component; 442. U-shaped plate; 443. Connecting plate; 444. Limiting roller; 45. Glue storage tank; 46. Pressing mechanism 2; 57. Limiting component; 58. Transmission component; 59. Threaded rod; 50. Connecting component; 51. Limiting plate 2. Detailed Implementation

[0047] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Example 1:

[0049] This application provides an extrusion process for adhesive infiltration coating, which specifically includes the following steps:

[0050] S1. The extruder continuously outputs a continuous rubber compound, which enters the separation mechanism 43 of the guide assembly 4.

[0051] Driven by motor 432, the dividing plate 434 precisely separates the adhesive material into an upper layer and a lower layer at a preset angle.

[0052] The upper layer of rubber material is guided by the triangular guide plate 433 to the second conveying channel 422, and then conveyed by the second conveying channel 422 to the inner cavity of the second pressing mechanism 45. The arc plate of the second pressing mechanism 45 guides the rubber material to adhere to the surface of the second roller 33. At the same time, the elastic limiting roller presses the upper layer of rubber material onto the surface of the second roller 33 by the action of the spring, so as to prevent it from falling off during the conveying process.

[0053] The lower layer of rubber material is guided by the triangular guide plate 433 to the conveying channel 421, and then conveyed to the inner cavity of the pressing mechanism 44. The arc plate 443 guides the rubber material to adhere to the surface of the No. 3 roller 34. Under the elastic action of the spring, the limiting roller 4453 presses the lower layer of rubber material tightly onto the surface of the No. 3 roller 34, ensuring that the rubber material and the roller are tightly adhered.

[0054] During the conveying process of the rubber material, the limiting plate 55 of the limiting component 5 limits the rubber material in both directions to prevent the rubber material from deviating and to ensure that the rubber material is always in the central area.

[0055] S2. The belt core enters the inner cavity through the input hole 24 of the mounting shell 21. After being limited and calibrated by the positioning roller group 25, it maintains a stable conveying state and moves into the gap between the first roller 32 and the second roller 33. Then it moves out from the gap between the second roller 33 and the third roller 34, forming an "S"-shaped wrapping method. In the "S"-shaped wrapping method, the belt core and the rubber material are squeezed by the second roller 33 and the first roller 32, which discharges most of the air bubbles between the rubber material and the belt core, and at the same time achieves the initial bonding between the rubber material and the belt core on the working surface.

[0056] The upper layer of rubber material on the surface of roller 33 comes into contact with the working surface of the belt core as the roller rotates;

[0057] The lower layer of rubber material on the surface of roller 34 comes into contact with the other working surface of the belt core as the roller rotates;

[0058] Relying on the extrusion force generated by the preset roller gap, the rubber material is squeezed and penetrated into the gap between the core fibers, while most of the air bubbles between the rubber material and the core are forcibly discharged, so as to achieve the initial tight bonding between the rubber material and the core on the working surface.

[0059] S3. Adjust the roller gap between roller 35 and roller 34 using hydraulic cylinder 36 to be the same as the thickness of the rubber material, so that the lower layer of rubber material completes secondary shearing and kneading before extrusion, ensuring the uniformity of the rubber material.

[0060] Simultaneously, the speeds of roller 1 (32), roller 2 (33), roller 3 (34), and roller 4 (35) are set, and the rubber material is calendered and bonded to the working surface of the core through extrusion force, so as to achieve precise double-sided rubber coating of the core.

[0061] S4. After the double-sided coated core is repositioned and calibrated by two guide roller groups 26, it is smoothly output from the output hole 23 of the mounting shell 21 and enters the subsequent cooling and shaping process to finally form the coated finished product.

[0062] In step S3, the speed ratio of roller 4 (35) is 0.85, the speed ratio of roller 34 is 1.05, the speed of roller 2 (33) is the reference speed, and the speed ratio of roller 1 (32) is 1. By setting the speed ratio difference, we can avoid stretching or wrinkling of the rubber material and ensure the consistency of the coating thickness.

[0063] Furthermore, to meet the requirements of the adhesive diffusion process, the roller spacing is set according to the following standards: the roller spacing between roller 32 and roller 33 is the actual thickness of the core plus the thickness of the adhesive covering the working surface - 1mm; the roller spacing between roller 35 and roller 34 is the thickness of the adhesive covering the working surface - 0.3mm; and the roller spacing between roller 34 and roller 33 is the roller spacing between roller 35 and roller 34 plus the roller spacing between roller 33 and roller 32.

[0064] It should be noted that the speed ratio of 0.85:1.05 between roller 4 (35) and roller 3 (34) is set so that when the rubber compound is calendered to the surface of the core by roller 3 (34), the rubber compound can be sheared and kneaded twice, thereby improving the uniformity of the mixed rubber. The speed ratio of 1.05 between roller 3 (34) and roller 2 (33) is set so that in the rubber diffusion process, the core first passes through roller 1 (32) and roller 2 (33), and then is pressed out between roller 2 (33) and roller 3 (34). The superposition thickness of the core and the top cover rubber makes the actual effective radius of roller 2 (33) larger than that of roller 3 (34). Therefore, it is necessary to increase the speed of roller 3 (34) to ensure that the pressing speed is consistent.

[0065] Example 2:

[0066] The extrusion device is configured as follows: Figure 1-10 As shown, in Example 1, an extrusion process for adhesive coating is performed using this extrusion device. The extrusion device includes a base 1, an mounting frame 2 at the upper end of the base 1, and an extrusion component 3 in the middle of the inner cavity of the mounting frame 2, which is used to extrude the adhesive into the gaps between the core fibers.

[0067] The upper part of the inner cavity of the mounting frame 2 is provided with a guide component 4 for guiding and conveying the rubber material to the extrusion component 3. The guide component 4 is adapted to the extrusion component 3 and the upper part of the guide component 4 extends to the outside of the mounting frame 2.

[0068] Limiting components 5 are provided on both sides of the outer surface of the guide component 4 to restrict the adhesive material to the center position.

[0069] Specifically, when the extrusion device is running, the belt core enters from the bottom of the mounting frame 2, passes through the extrusion component 3 in sequence, and exits from the top of the mounting frame 2. During this process, the guide component 4 guides the rubber extruded by the extruder to the outer surface of the extrusion component 3. The extrusion component 3 then squeezes the rubber into the inside of the belt core, and finally the belt core with the rubber attached is output from the top of the mounting frame 2.

[0070] Furthermore, during the process of the guide component 4 guiding the rubber material extruded by the extruder to the outer surface of the extrusion component 3, the limiting component 5 can limit and constrain the rubber material to ensure that the rubber material is always in the middle area of ​​the extrusion device. In addition, the rubber material used in this embodiment is a continuous solid film or strip formed by extrusion.

[0071] To limit the movement of the belt core, such as Figure 2 and Figure 5 As shown, the mounting frame 2 includes a mounting shell 21, which is fixedly mounted on the upper end of two bases 1. The upper part of the outer surface of the mounting shell 21 has a mounting hole 22, the upper part of one side of the outer surface of the mounting shell 21 has an output hole 23, the top of the mounting shell 21 has an input hole 24, the inner cavity of the mounting shell 21 is provided with a positioning roller group 25 near the input hole 24, and the inner cavity of the mounting shell 21 is provided with two guide roller groups 26 near the output hole 23.

[0072] Specifically, when the extrusion device is running, the core strip enters the inner cavity of the mounting shell 21 through the input hole 24, passes through the positioning roller group 25, the extrusion component 3 and the middle of the two guide roller groups 26 in sequence, and finally exits through the output hole 23.

[0073] In order to extrude the rubber material input to guide assembly 4 onto the surface of the belt core, such as Figure 2 - Figure 4 As shown, the extrusion component 3 includes two mounting plates 31, which are fixedly installed in the inner wall of the mounting shell 21. A first roller 32 is rotatably mounted on the lower part of the two mounting plates 31, a second roller 33 is rotatably mounted on the lower side of the middle part of the two mounting plates 31, a third roller 34 is rotatably mounted on the upper side of the middle part of the two mounting plates 31, and a fourth roller 35 is rotatably mounted on the upper part of the two mounting plates 31. A hydraulic cylinder 36 is provided on the upper part of the outer surface of each of the two mounting plates 31. The protruding ends of the two hydraulic cylinders 36 are rotatably connected to both sides of the outer surface of the fourth roller 35, which can adjust the gap between the fourth roller 35 and the third roller 34, thereby adjusting the shearing degree of the rubber material.

[0074] Specifically, after the belt core passes through the middle of the positioning roller group 25, it passes sequentially between roller 1 32 and roller 2 33, and between roller 34 and roller 2 33, and then exits through the middle of the two guide roller groups 26. During this process, roller 1 32, roller 2 33 and roller 34 form an "S"-shaped rubber wrapping method for the belt core.

[0075] Example 3:

[0076] This embodiment further improves upon Embodiment 2 by modifying the guide assembly 4 to precisely deliver the extruded rubber material to the surfaces of roller 34 and roller 33, such as... Figure 4 , Figure 6 , Figure 7 and Figure 8 As shown, the guide assembly 4 includes two fixed plates 41. Guide mechanisms 42 are provided on both sides of the outer surface of the two fixed plates 41. A separation mechanism 43 is provided on the upper part of the guide mechanism 42. A pressing mechanism 1 44 is provided on the lower part of the guide mechanism 42 near the third roller 34. A pressing mechanism 2 45 is provided on the lower part of the guide mechanism 42 near the second roller 33. The pressing mechanism 2 45 has the same structure as the pressing mechanism 1 44.

[0077] Specifically, after the extruded rubber enters the separation mechanism 43, it is separated into an upper layer and a lower layer. The upper and lower layers are then conveyed to the surfaces of roller 34 and roller 23 respectively by the guiding mechanism 42. During this process, pressing mechanism 1 44 and pressing mechanism 2 45 apply force to the upper and lower layers respectively to ensure that the upper and lower layers are tightly adhered to the surfaces of roller 34 and roller 23.

[0078] In order to convey the upper and lower layers of rubber compound onto the surfaces of roller 34 and roller 33 respectively, as follows: Figure 3 and Figure 4 As shown, the guiding mechanism 42 includes a first conveying channel 421, and a second conveying channel 422 is provided on the upper part of the first conveying channel 421. It should be noted that, in order to facilitate the passage of the belt core, a through channel is provided between the top and bottom surfaces of the second conveying channel 422. The first conveying channel 421 and the second conveying channel 422 are both fixedly installed on the outer surfaces of two fixed plates 41.

[0079] Specifically, the rubber extruded by the extruder is separated into an upper layer and a lower layer by the separation mechanism 43. The upper layer is conveyed to the inner cavity of the pressing mechanism 45 through the second conveying channel 422, and then pressed onto the surface of the second roller 33 by the pressing mechanism 45. The lower layer is conveyed to the inner cavity of the pressing mechanism 44 through the first conveying channel 421, and then pressed onto the surface of the third roller 34 by the pressing mechanism 44.

[0080] To separate the rubber compound extruded from the extruder, such as Figure 9 and Figure 10 As shown, the separation mechanism 43 includes a Y-shaped pipe 431 fixedly installed on the fixed plate 41, and the Y-shaped pipe 431 is respectively connected to the first conveying channel 421 and the second conveying channel 422. A motor 432 is provided on the outer surface of the Y-shaped pipe 431 on one side, and a triangular guide plate 433 is provided on the inner side of the Y-shaped pipe 431. A dividing plate 434 is rotatably installed in the middle of the triangular guide plate 433, and the output end of the motor 432 is fixedly connected to the end face of the dividing plate 434.

[0081] Specifically, after the rubber extruded from the extruder enters the separation mechanism 43, the dividing plate 434 separates the rubber into an upper layer and a lower layer. The upper and lower layers are guided by the triangular guide plate 433 to the inner cavities of the first conveying channel 421 and the second conveying channel 422.

[0082] Furthermore, when producing products of different specifications, the angle of the dividing plate 434 can be adjusted by the motor 432, thereby adjusting the thickness ratio of the upper and lower layers of adhesive.

[0083] In order to guide the lower layer of rubber material to roller 34 and simultaneously adhere it to the surface of roller 34, such as... Figure 2 - Figure 4 As shown, the pressing mechanism 44 includes a guide frame 441, which is fixedly installed on the lower part of the outer surface of the conveying channel 421. Positioning plates 442 are provided on both sides of the outer surface of the guide frame 441. The inner surfaces of the two positioning plates 442 are rotatably connected to the outer surfaces of the No. 3 roller 34. An arc plate 443 is provided at the lower part of the guide frame 441. Multiple limiting holes 444 are arrayed on the outer surface of the arc plate 443. Limiting elements 445 are provided in the middle of the inner cavity of the multiple limiting holes 444. A glue storage tank 446 is provided inside the guide frame 441, which allows all the glue to enter the glue storage tank 446 before being coated onto the surface of the No. 3 roller 34. After the glue overflows inside the glue storage tank 446, it flows out along the top edge, preventing the glue from only accumulating on both sides of the No. 3 roller 34.

[0084] Furthermore, such as Figure 7As shown, the limiting member 445 includes two U-shaped plates 4451, both of which are fixedly installed on the outer surface of the arc plate 443. A connecting plate 4452 is slidably installed in the middle of the inner cavity of each of the two U-shaped plates 4451. Multiple springs are provided on the upper end face of the two connecting plates 4452 and the top wall of the inner cavity of the U-shaped plate 4451. The lower part of each of the two connecting plates 4452 extends through the corresponding limiting hole 444 into the inner cavity of the arc plate 443. A limiting roller 4453 is rotatably installed on the lower part of the two connecting plates 4452.

[0085] Specifically, after the lower layer of rubber material enters the inner cavity of the guide frame 441 under the conveying action of the conveying channel 421, it gradually enters the inner cavity of the arc plate 443. Since the arc plate 443 has an arc-shaped structure that gradually extends towards the central axis of the third roller 34, it can guide the lower layer of rubber material to contact the surface of the third roller 34. At the same time, the lower layer of rubber material forms a bond with the surface of the limiting roller 4453.

[0086] Furthermore, when the lower layer of rubber comes into contact with the surface of the limiting roller 4453, it will push the limiting roller 4453 upward, causing the spring on the end face of the connecting plate 4452 to be compressed. When the lower layer of rubber gradually adheres to the surface of the third roller 34, the elastic force generated by the spring acts on the lower layer of rubber through the limiting roller 4453, ensuring that it adheres tightly to the surface of the third roller 34.

[0087] Furthermore, the structure of the second pressing mechanism 45 is basically the same as that of the first pressing mechanism 44, except that the number of positioning elements 445 is slightly reduced, and its function is the same as that of the first pressing mechanism 44.

[0088] To achieve the limiting constraint of the rubber compound and ensure that the rubber compound always remains in the central area of ​​the extrusion device, such as... Figure 9 As shown, the limiting component 5 includes a transmission component 51, which is fixedly installed on the middle of the upper outer surface of the mounting shell 21. The protruding end of the transmission component 51 is provided with a threaded rod 52, and both ends of the threaded rod 52 extend to the outside of the mounting shell 21. The threads on both sides of the outer surface of the threaded rod 52 are in opposite directions. Both sides of the outer surface of the threaded rod 52 are threadedly connected with connecting components 53. The ends of the two connecting components 53 that are close to each other extend into the interior of the first conveying channel 421 and the second conveying channel 422. The ends of the two connecting components 53 that are close to each other are provided with a limiting plate 55.

[0089] Specifically, before the extrusion device is operated, the operator controls the transmission component 51 through the control unit, so that the transmission component 51 drives the connecting parts 53 on both sides to move in opposite directions through the threaded rod 52, thereby driving the second limit plate 55 to adjust synchronously. The distance between the second limit plate 55 is preset according to the width of the rubber material conveyed by the guide mechanism 42.

[0090] Furthermore, when the rubber material enters the inner cavity of the separation mechanism 43, the limiting plates 55 on both sides can form a bidirectional limiting on the rubber material, ensuring that the rubber material is always in the middle of the guiding mechanism 42, and ensuring that the rubber material is accurately squeezed to the core surface by the extrusion component 3.

[0091] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. An extrusion device for adhesive coating using the glue diffusion method, characterized in that: Includes a base (1), the upper end of which is provided with an installation frame (2), and the inner cavity of the installation frame (2) is provided with an extrusion component (3) for extruding the adhesive material into the gap between the core fibers; The upper part of the inner cavity of the mounting frame (2) is provided with a guide component (4) for guiding and conveying the rubber material to the extrusion component (3). The guide component (4) is adapted to the extrusion component (3) and the upper part of the guide component (4) extends to the outside of the mounting frame (2). Limiting components (5) are provided on both sides of the outer surface of the guide assembly (4) to restrict the adhesive material to the center position; The extrusion component (3) includes two mounting plates (31). The two mounting plates (31) are fixedly installed in the inner wall of the mounting shell (21). A first roller (32) is rotatably installed on the lower part of the two mounting plates (31). A second roller (33) is rotatably installed on the lower side of the middle part of the two mounting plates (31). A third roller (34) is rotatably installed on the upper side of the middle part of the two mounting plates (31). A fourth roller (35) is rotatably installed on the upper part of the two mounting plates (31). A hydraulic cylinder (36) is provided on the upper part of the outer surface of the two mounting plates (31). The extended ends of the two hydraulic cylinders (36) are rotatably connected to the two sides of the outer surface of the fourth roller (35). The guide assembly (4) includes two fixed plates (41). Guide mechanisms (42) are provided on both sides of the outer surface of the two fixed plates (41). A separation mechanism (43) is provided on the upper part of the guide mechanism (42). A pressing mechanism one (44) is provided on the lower part of the guide mechanism (42) near the third roller (34). A pressing mechanism two (45) is provided on the lower part of the guide mechanism (42) near the second roller (33). The pressing mechanism two (45) has the same structure as the pressing mechanism one (44). The pressing mechanism (44) includes a guide frame (441), which is fixedly installed on the lower part of the outer surface of the conveying channel (421). Positioning plates (442) are provided on both sides of the outer surface of the guide frame (441). The inner surfaces of the two positioning plates (442) are rotatably connected to the outer surfaces of the three rollers (34). An arc plate (443) is provided at the lower part of the guide frame (441). Multiple limiting holes (444) are arrayed on the outer surface of the arc plate (443). Limiting elements (445) are provided in the middle of the inner cavity of the multiple limiting holes (444). A glue storage tank (446) is provided inside the guide frame (441). The limiting member (445) includes two U-shaped plates (4451), both of which are fixedly installed on the outer surface of the arc plate (443). A connecting plate (4452) is slidably installed in the middle of the inner cavity of each of the two U-shaped plates (4451). Multiple springs are provided on the upper end face of the two connecting plates (4452) and the top wall of the inner cavity of the U-shaped plate (4451). The lower part of each of the two connecting plates (4452) extends through the corresponding limiting hole (444) into the inner cavity of the arc plate (443). A limiting roller (4453) is rotatably installed on the lower part of the two connecting plates (4452).

2. The extrusion device for adhesive coating by impregnation according to claim 1, characterized in that, The mounting frame (2) includes a mounting shell (21), which is fixedly mounted on the upper end of two bases (1). The upper part of the outer surface of the mounting shell (21) is provided with a mounting hole (22), the upper part of one side of the outer surface of the mounting shell (21) is provided with an output hole (23), the top of the mounting shell (21) is provided with an input hole (24), a positioning roller group (25) is provided in the inner cavity of the mounting shell (21) near the input hole (24), and two guide roller groups (26) are provided in the inner cavity of the mounting shell (21) near the output hole (23).

3. The extrusion device for adhesive coating by impregnation according to claim 2, characterized in that, The guiding mechanism (42) includes a first conveying channel (421), and a second conveying channel (422) is provided on the upper part of the first conveying channel (421). The first conveying channel (421) and the second conveying channel (422) are both fixedly installed on the outer surface of two fixed plates (41).

4. The extrusion device for adhesive coating by impregnation according to claim 3, characterized in that, The separation mechanism (43) includes a Y-shaped pipe (431) fixedly installed on a fixed plate (41), and the Y-shaped pipe (431) is connected to the first conveying channel (421) and the second conveying channel (422) respectively. A motor (432) is provided on the outer surface of the Y-shaped pipe (431) on one side. A triangular guide plate (433) is provided on the inner side of the Y-shaped pipe (431). A dividing plate (434) is rotatably installed in the middle of the triangular guide plate (433). The output end of the motor (432) is fixedly connected to the end face of the dividing plate (434).

5. The extrusion device for adhesive coating by impregnation according to claim 4, characterized in that, The limiting component (5) includes a transmission component (51), which is fixedly installed on the middle of the upper outer surface of the mounting shell (21). The protruding end of the transmission component (51) is provided with a threaded rod (52), and both ends of the threaded rod (52) extend to the outside of the mounting shell (21). The thread directions on both sides of the outer surface of the threaded rod (52) are opposite. Both sides of the outer surface of the threaded rod (52) are threadedly connected with connectors (53). The ends of the two connectors (53) that are close to each other extend into the interior of the first conveying channel (421) and the second conveying channel (422). The ends of the two connectors (53) that are close to each other are provided with a limiting plate (55).

6. An extrusion process for adhesive infiltration encapsulation, employing the extrusion apparatus for adhesive infiltration encapsulation as described in any one of claims 1-5, characterized in that... Includes the following steps: S1. The extruder continuously outputs a continuous rubber compound, which enters the separation mechanism (43) of the guide assembly (4). Driven by motor 1 (432), the dividing plate (434) precisely separates the adhesive material into an upper layer and a lower layer at a preset angle; The upper layer of rubber material is guided by the triangular guide plate (433) to the second conveying channel (422), and then conveyed to the inner cavity of the second pressing mechanism (45) by the second conveying channel (422). The arc plate of the second pressing mechanism (45) guides the rubber material to adhere to the surface of the second roller (33). At the same time, the elastic limiting roller presses the upper layer of rubber material onto the surface of the second roller (33) by the force of the spring, so as to prevent it from falling off during the conveying process. The lower layer of rubber material is guided by the triangular guide plate (433) to the first conveying channel (421), and then conveyed to the inner cavity of the first pressing mechanism (44) by the first conveying channel (421). The arc plate (443) guides the rubber material to adhere to the surface of the third roller (34). Under the elastic action of the first spring, the limiting roller (4453) presses the lower layer of rubber material tightly onto the surface of the third roller (34) to ensure that the rubber material and the roller are tightly adhered. During the conveying process of the rubber material, the limiting plate 2 (55) of the limiting component (5) limits the rubber material in both directions to prevent the rubber material from deviating and ensure that the rubber material is always in the middle area; S2. The core enters the inner cavity through the input hole (24) of the mounting shell (21). After being limited and calibrated by the positioning roller group (25), it maintains a stable conveying state and moves to the gap between the first roller (32) and the second roller (33). Then it moves out from the gap between the second roller (33) and the third roller (34) to form an "S" shaped rubber wrapping method. The upper layer of rubber material on the surface of the No. 2 roller (33) comes into contact with the working surface of the belt core as the roller rotates; The lower layer of rubber material on the surface of the No. 3 roller (34) comes into contact with the other working surface of the belt core as the roller rotates; Relying on the extrusion force generated by the preset roller gap, the rubber material is squeezed and penetrated into the gap between the core fibers, while most of the air bubbles between the rubber material and the core are forcibly discharged, so as to achieve the initial tight bonding between the rubber material and the core on the working surface. S3. Adjust the gap between roller 4 (35) and roller 3 (34) using hydraulic cylinder (36) to be the same as the thickness of the rubber material, so that the lower layer of rubber material can be sheared and kneaded twice before extrusion, ensuring the uniformity of the rubber material. At the same time, the speeds of roller 1 (32), roller 2 (33), roller 3 (34) and roller 4 (35) are set, and the rubber material is calendered and bonded to the working surface of the core through the extrusion force, so as to achieve precise double-sided rubber coating of the core. S4. After the double-sided coated core is repositioned and calibrated by two guide roller groups (26), it is smoothly output from the output hole (23) of the mounting shell (21) and enters the subsequent cooling and shaping process to finally form the coated finished product.

7. The extrusion process for adhesive coating according to claim 6, characterized in that, In step S3, the speed ratio of roller 4 (35) is 0.85, the speed ratio of roller 3 (34) is 1.05, the speed of roller 2 (33) is the roller reference speed, and the speed ratio of roller 1 (32) is 1.

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