A kind of fabric calendering equipment for tire production

Abstract

A kind of for tire production, it relates to the technical field of tire cord calendering, including pedestal and two support frames, a plurality of cooling roller is rotatably arranged between two support frames, outer fixed tube is fixedly arranged in cooling roller, a plurality of partition plates are fixedly arranged on the outer wall of outer fixed tube, partition plate is frictionally sealed with cooling roller, cooling cavity is formed between adjacent two partition plates, cooling cavity is communicated with external circulating cold water source, fixed ring is fixedly arranged in cooling cavity, the outer wall of fixed ring is provided with protruding structure, and extrusion assembly is arranged between two support frames;Partition plate is composed of a plurality of plane sector structure and curved sector structure alternately arranged along circumferential direction, there is axial spacing between adjacent two plane sector structures, and the axial spacing is greater than the thickness of partition plate, and the adjacent plane sector structures are connected by curved sector structure.

Description

Technical Field

[0001] This invention relates to the field of tire cord calendering technology, specifically to a cord calendering device for tire production. Background Technology

[0002] In tire manufacturing, the cord calendering process is a crucial step in ensuring a tight bond between the cord fabric and the rubber material. This process is completed continuously using cord calendering equipment. First, two sets of hot rubber sheets are fed into different roller groups: one set is extruded by the first roller group to form a uniformly thick upper sheet, while the other set is extruded by the second roller group to form a lower sheet. Subsequently, the cord fabric is guided between the upper and lower sheets, aligning them before entering a third roller group for compound extrusion. Under the pressure and shearing action of the rollers, the upper and lower sheets fully adhere and permeate with the cord fabric, forming a calendered finished product with an integral structure. This finished product is then conveyed to the cooling roller area, where circulating cooling water removes excess heat, cooling and setting the material, thereby stabilizing its dimensions and rubber properties, ultimately yielding qualified cord fabric suitable for subsequent tire molding processes.

[0003] The existing tire cord calendering equipment has gradually revealed its shortcomings during use, mainly in the following aspects:

[0004] The calendered products suffer from poor cooling uniformity. Specifically, to prevent axial temperature gradients during cooling, annular baffles are typically installed axially on the cooling rollers to divide the internal space into several independent cooling zones. Circulating cooling water flows into each zone to provide zonal cooling. However, the annular baffles must be in close contact with the inner wall of the cooling rollers to achieve effective zoned sealing. Furthermore, the annular baffles themselves have a certain axial thickness. This means that when the cooling medium flows through each zone, the annular contact zone formed by the baffles and the inner wall of the cooling rollers cannot be directly washed away by the cooling medium. Consequently, the outer wall area of ​​the roller corresponding to this contact zone cannot be effectively cooled, forming a so-called "annular cooling blind zone." At this blind zone, the calendered products exhibit localized high temperatures and uneven cooling, affecting product quality.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide a tire cord calendering equipment. This equipment eliminates the "annular cooling blind zone" on the outer wall of the cooling rollers during the cooling of calendered products, ensuring uniform temperature distribution on the surface of the cooling rollers. This allows for uniform cooling of the calendered products, effectively preventing product quality issues caused by localized high temperatures or uneven cooling.

[0007] To address the above problems, the present invention provides the following technical solution:

[0008] A tire cord calendering device includes a base and two support frames. A plurality of cooling rollers are rotatably arranged between the two support frames. An outer fixed tube is fixed inside the cooling rollers. A plurality of partition plates are fixed on the outer wall of the outer fixed tube. The partition plates are frictionally sealed to the cooling rollers. A cooling chamber is formed between two adjacent partition plates. The cooling chamber is connected to an external circulating cold water source. A fixing ring is fixed inside the cooling chamber. The outer wall of the fixing ring has a protruding structure. An extrusion assembly is arranged between the two support frames.

[0009] The partition plate is composed of several planar sector structures and curved sector structures arranged alternately along the circumference. There is an axial distance between two adjacent planar sector structures, and the axial distance is greater than the thickness of the partition plate. Adjacent planar sector structures are connected by curved sector structures.

[0010] As an optimized solution, the extrusion assembly includes two vertically arranged outer extrusion rollers, and two vertically arranged inner extrusion rollers between the two outer extrusion rollers. Both the outer extrusion rollers and the inner extrusion rollers are rotatably connected to the support frame.

[0011] As an optimized solution, one of the support frames is fixedly equipped with several servo motors at one end, and the output shaft of the servo motor passes through the support frame and is fixedly connected to the outer extrusion roller or the inner extrusion roller.

[0012] As an optimized solution, two retaining rings are fixedly sleeved on the outer wall of the cooling roller.

[0013] As an optimized solution, the two ends of the cooling roller are respectively connected to two support frames and rotated thereto. The end of the support frame is fixedly provided with a fixing frame. The two ends of the outer fixing tube are respectively connected to the two fixing frames and fixed thereto. An inner fixing tube is fixedly provided inside the outer fixing tube. One end of the inner fixing tube passes through the outer fixing tube and extends to the outside. Both the outer fixing tube and the inner fixing tube are connected to the cooling chamber and are connected to an external circulating cold water source.

[0014] As an optimized solution, a baffle is fixedly provided on the outer wall of the fixed ring. The baffle is frictionally sealed to the cooling roller. A water inlet pipe and a water outlet pipe are respectively provided on both sides of the baffle inside the cooling chamber. The water outlet pipe passes through the fixed ring and communicates with the inner cavity of the outer fixed pipe. The water inlet pipe passes through the fixed ring and the outer fixed pipe and communicates with the inner cavity of the inner fixed pipe.

[0015] As an optimized solution, the fixing ring is fixedly sleeved on the outer wall of the outer fixing tube, and both ends of the fixing ring and the baffle are fixedly connected to the partition plate. The outer wall of the partition plate and the top of the baffle plate are covered with sealing gaskets.

[0016] As an optimized solution, a gear ring is fixedly fitted on the outer wall of the cooling roller, and several drive motors are fixedly installed at the end of one of the support frames. The output shaft of the drive motor passes through the support frame and is fixedly fitted with a gear that meshes with the gear ring.

[0017] As an optimized solution, a guide roller is provided between the two support frames, and the guide roller is rotatably connected to the support frame.

[0018] As an optimized solution, the support frame is fixedly connected to the base.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. Driven by a servo motor, the outer extrusion roller and the inner extrusion roller move in a sync... Figure 8 The device rotates in the indicated direction. One hot sheet is pressed by the upper outer extrusion roller and the inner extrusion roller to form an upper sheet. This upper sheet is pressed against the upper inner extrusion roller and rotates downward. The other hot sheet is pressed by the lower outer extrusion roller and the inner extrusion roller to form a lower sheet. This lower sheet is pressed against the lower inner extrusion roller and rotates upward. The fabric and the upper and lower sheets pass through the space between the two inner extrusion rollers. The upper and lower sheets are located above and below the fabric, respectively. The two inner extrusion rollers press the fabric and the upper and lower sheets to form a calendered product. The inner and outer extrusion rollers work together to initially press the hot sheet to form the upper and lower sheets. The two inner extrusion rollers work together to press the upper and lower sheets and the fabric to form a calendered product. Compared with the traditional technology that uses three sets of rollers (six rollers) for processing, this equipment can reduce the number of rollers used and reduce production costs.

[0021] 2. The drive motor rotates the cooling roller. The calendered product is cooled as it passes over the surface of the cooling roller. During the cooling process, cooling water enters the inner fixed pipe and then enters the cooling chamber through the water inlet pipe. After flowing through the cooling chamber, the cooling water enters the outer fixed pipe through the drain pipe and is discharged. The cooling water in the cooling chamber washes over and cools the cooling roller. During the rotation of the cooling roller, its inner wall continuously contacts the planar and curved fan-shaped structures of the partition plate. Taking a complete annular segment of the cooling roller as an example, after passing through two adjacent planar fan-shaped structures, the parts of the inner wall of the annular segment that participate in the cooling can all come into contact with the cooling water for cooling. Therefore, when the equipment cools the calendered product, there is no "annular cooling blind zone" on the outer wall of the cooling roller, and the surface temperature of the cooling roller is uniformly distributed, which can uniformly cool the calendered product and effectively avoid product quality problems caused by local high temperature or uneven cooling.

[0022] 3. The raised structure on the fixed ring can effectively improve the turbulence intensity of the cooling water, thereby significantly enhancing the heat exchange effect and improving the cooling efficiency. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure between the two support frames of the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of the cooling roller of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure between the two partition plates of the present invention;

[0028] Figure 5 This is a cross-sectional view of the fixing ring of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the partition plate of the present invention;

[0030] Figure 7 This is a schematic diagram of the extrusion assembly of the present invention;

[0031] Figure 8 This is a schematic diagram showing the rotation direction of the inner / outer extrusion rollers during the operation of this invention.

[0032] In the diagram: 1-Base; 2-Extrusion assembly; 3-Support frame; 4-Servo motor; 5-Drive motor; 6-Gear; 7-Gear ring; 8-Cooling roller; 9-Fixing frame; 10-Outer fixing tube; 11-Separator plate; 12-Baffle ring; 13-Cooling chamber; 14-Baffle; 15-Fixing ring; 16-Sealing gasket; 17-Curved fan-shaped structure; 18-Planar fan-shaped structure; 19-Inner fixing tube; 20-Protruding structure; 21-Drainage pipe; 22-Water inlet pipe; 23-Inner extrusion roller; 24-Outer extrusion roller; 25-Guide roller; 26-Cloth; 27-Hot film; 28-Calendar product. Detailed Implementation

[0033] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0034] like Figures 1 to 8 As shown, a tire cord calendering device includes a base 1 and two support frames 3. Several cooling rollers 8 are rotatably arranged between the two support frames 3. An outer fixing tube 10 is fixed inside the cooling roller 8. Several partition plates 11 are fixed on the outer wall of the outer fixing tube 10. The partition plates 11 are frictionally sealed to the cooling roller 8. A cooling chamber 13 is formed between two adjacent partition plates 11. The cooling chamber 13 is connected to an external circulating cold water source. A fixing ring 15 is fixed inside the cooling chamber 13. The outer wall of the fixing ring 15 is provided with a protruding structure 20. An extrusion assembly 2 is provided between the two support frames 3.

[0035] The partition plate 11 is composed of several planar sector structures 18 and curved sector structures 17 arranged alternately along the circumference. There is an axial spacing between two adjacent planar sector structures 18, and the axial spacing is greater than the thickness of the partition plate 11. Adjacent planar sector structures 18 are connected by curved sector structures 17.

[0036] The extrusion assembly 2 includes two vertically arranged outer extrusion rollers 24, and two vertically arranged inner extrusion rollers 23 between the two outer extrusion rollers 24. Both the outer extrusion rollers 24 and the inner extrusion rollers 23 are rotatably connected to the support frame 3.

[0037] One of the support frames 3 has several servo motors 4 fixedly mounted at one end. The output shaft of the servo motor 4 passes through the support frame 3 and is fixedly connected to the outer extrusion roller 24 or the inner extrusion roller 23.

[0038] Two baffle rings 12 are fixedly fitted on the outer wall of the cooling roller 8.

[0039] The two ends of the cooling roller 8 pass through two support frames 3 and are rotatably connected to them. The end of the support frame 3 is fixedly provided with a fixing frame 9. The two ends of the outer fixing pipe 10 pass through two fixing frames 9 and are fixedly connected to them. An inner fixing pipe 19 is fixedly provided inside the outer fixing pipe 10. One end of the inner fixing pipe 19 passes through the outer fixing pipe 10 and extends to the outside. Both the outer fixing pipe 10 and the inner fixing pipe 19 are connected to the cooling chamber 13. The outer fixing pipe 10 and the inner fixing pipe 19 are connected to the external circulating cold water source.

[0040] A baffle 14 is fixedly provided on the outer wall of the fixed ring 15. The baffle 14 is frictionally sealed to the cooling roller 8. Inside the cooling chamber 13, a water inlet pipe 22 and a drain pipe 21 are respectively provided on both sides of the baffle 14. The drain pipe 21 passes through the fixed ring 15 and communicates with the inner cavity of the outer fixed pipe 10. The water inlet pipe 22 passes through the fixed ring 15 and the outer fixed pipe 10 and communicates with the inner cavity of the inner fixed pipe 19.

[0041] The fixing ring 15 is fixedly sleeved on the outer wall of the outer fixing tube 10. Both ends of the fixing ring 15 and the baffle 14 are fixedly connected to the partition plate 11. The outer wall of the partition plate 11 and the top of the baffle 14 are covered with sealing gaskets 16.

[0042] A gear ring 7 is fixedly fitted on the outer wall of the cooling roller 8. Several drive motors 5 are fixedly installed at the end of one of the support frames 3. The output shaft of the drive motor 5 passes through the support frame 3 and is fixedly fitted with a gear 6 that meshes with the gear ring 7.

[0043] A guide roller 25 is provided between the two support frames 3, and the guide roller 25 is rotatably connected to the support frame 3.

[0044] The support frame 3 is fixedly connected to the base 1.

[0045] The working principle of this device is as follows:

[0046] Driven by the servo motor 4, the outer extrusion roller 24 and the inner extrusion roller 23 press... Figure 8Rotating in the indicated direction, one hot adhesive sheet 27 is pressed by the upper outer extrusion roller 24 and the inner extrusion roller 23 to form an upper adhesive sheet. This upper adhesive sheet is in close contact with the upper inner extrusion roller 23 and rotates downward. The other hot adhesive sheet 27 is pressed by the lower outer extrusion roller 24 and the inner extrusion roller 23 to form a lower adhesive sheet. This lower adhesive sheet is in close contact with the lower inner extrusion roller 23 and rotates upward. The curtain fabric 26, along with the upper and lower adhesive sheets, passes between the two inner extrusion rollers 23. The upper and lower adhesive sheets are located above the curtain fabric 26. Below, two inner extrusion rollers 23 extrude the fabric 26 and the upper and lower films to form a calendered product 28. The inner extrusion rollers 23 cooperate with the outer extrusion rollers 24 to perform preliminary extrusion of the hot film 27 to form the upper and lower films. The two inner extrusion rollers 23 cooperate to extrude the upper and lower films and the fabric 26 to form the calendered product 28. Compared with the traditional technology that uses three sets of rollers (six rollers) for processing, this equipment can reduce the number of rollers used and reduce production costs.

[0047] The drive motor 5 drives the cooling roller 8 to rotate. The calendered product 28 is cooled as it passes over the surface of the cooling roller 8. During the cooling process, cooling water enters the inner fixed pipe 19 and enters the cooling chamber 13 through the water inlet pipe 22. After flowing through the cooling chamber 13, the cooling water enters the outer fixed pipe 10 through the drain pipe 21 and is discharged. The cooling water in the cooling chamber 13 washes and cools the cooling roller 8. During the rotation of the cooling roller 8, its inner wall will continuously come into contact with the planar fan-shaped structure 18 and the curved fan-shaped structure 17 of the partition plate 11. Taking the axially complete annular segment of the cooling roller 8 as an example, after the annular segment passes through two adjacent planar fan-shaped structures 18, the position of the inner wall of the annular segment that participates in the cooling can come into contact with the cooling water for cooling. Therefore, when the equipment cools the calendered product 28, there is no "annular cooling blind zone" on the outer wall of the cooling roller 8. The surface temperature of the cooling roller 8 is uniformly distributed, which can uniformly cool the calendered product 28 and effectively avoid product quality problems caused by local high temperature or uneven cooling.

[0048] The raised structure 20 on the fixed ring 15 can effectively improve the turbulence intensity of the cooling water, thereby significantly enhancing the heat exchange effect and improving the cooling efficiency.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A fabric calendering apparatus for tire production, characterized by: The device includes a base (1) and two support frames (3). Several cooling rollers (8) are rotatably arranged between the two support frames (3). An outer fixing tube (10) is fixed inside the cooling roller (8). Several partition plates (11) are fixed on the outer wall of the outer fixing tube (10). The partition plates (11) are frictionally sealed to the cooling roller (8). A cooling cavity (13) is formed between two adjacent partition plates (11). The cooling cavity (13) is connected to an external circulating cold water source. A fixing ring (15) is fixed inside the cooling cavity (13). A protruding structure (20) is provided on the outer wall of the fixing ring (15). An extrusion assembly (2) is provided between the two support frames (3). The partition plate (11) is composed of several planar sector structures (18) and curved sector structures (17) arranged alternately along the circumference. There is an axial spacing between two adjacent planar sector structures (18), and the axial spacing is greater than the thickness of the partition plate (11). Adjacent planar sector structures (18) are connected by curved sector structures (17). The cooling roller (8) has two support frames (3) passing through its two ends and being rotatably connected to them. The support frame (3) has a fixed frame (9) fixed at its end. The outer fixed tube (10) has two fixed frames (9) passing through its two ends and being fixedly connected to them. The outer fixed tube (10) has an inner fixed tube (19) fixed inside it. One end of the inner fixed tube (19) passes through the outer fixed tube (10) and extends to the outside. The outer fixed tube (10) and the inner fixed tube (19) are both connected to the cooling chamber (13). The outer fixed tube (10) and the inner fixed tube (19) are connected to the external circulating cold water source. A baffle (14) is fixedly provided on the outer wall of the fixed ring (15). The baffle (14) is frictionally sealed to the cooling roller (8). A water inlet pipe (22) and a drain pipe (21) are respectively provided on both sides of the baffle (14) inside the cooling chamber (13). The drain pipe (21) passes through the fixed ring (15) and communicates with the inner cavity of the outer fixed pipe (10). The water inlet pipe (22) passes through the fixed ring (15) and the outer fixed pipe (10) and communicates with the inner cavity of the inner fixed pipe (19). The fixing ring (15) is fixedly sleeved on the outer wall of the outer fixing tube (10). Both ends of the fixing ring (15) and the baffle (14) are fixedly connected to the partition plate (11). The outer wall of the partition plate (11) and the top of the baffle (14) are covered with sealing gaskets (16). During the rotation of the cooling roller (8), its inner wall will continuously come into contact with the planar fan-shaped structure (18) and the curved fan-shaped structure (17) of the partition plate (11).

2. A fabric calendering apparatus for tire production according to claim 1, characterized in that: The extrusion assembly (2) includes two vertically arranged outer extrusion rollers (24), and two vertically arranged inner extrusion rollers (23) between the two outer extrusion rollers (24). Both the outer extrusion rollers (24) and the inner extrusion rollers (23) are rotatably connected to the support frame (3).

3. A fabric calendering apparatus for tire production according to claim 2, characterized in that: One of the support frames (3) is fixedly provided with several servo motors (4) at one end. The output shaft of the servo motor (4) passes through the support frame (3) and is fixedly connected to the outer extrusion roller (24) or the inner extrusion roller (23).

4. A fabric calendering apparatus for tire production according to claim 1, characterized in that: Two baffle rings (12) are fixedly sleeved on the outer wall of the cooling roller (8).

5. A fabric calendering apparatus for tire production according to claim 1, characterized in that: The outer wall of the cooling roller (8) is fixedly fitted with a toothed ring (7), and one of the support frames (3) is fixedly provided with several drive motors (5). The output shaft of the drive motor (5) passes through the support frame (3) and is fixedly fitted with a gear (6) that meshes with the toothed ring (7).

6. A fabric calendering apparatus for tire production according to claim 2, characterized in that: A guide roller (25) is provided between the two support frames (3), and the guide roller (25) is rotatably connected to the support frame (3).

7. A fabric calendering apparatus for tire production according to claim 1, characterized in that: The support frame (3) is fixedly connected to the base (1).

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