A quick-change mold roll structure

Abstract

The utility model discloses a kind of quick replacement mould roll structure, including roll core and roll cover, roll cover is formed by the splicing of multiple sleeve body units arranged along circumference, multiple sleeve body units are enclosed to form annular structure with roll core as center, each sleeve body unit is parallel with roll core axis and distance is equal, and each sleeve body unit is detachably connected with roll core.The utility model makes roll cover design as the annular structure of multiple sleeve body units arranged along circumference splicing, and makes each sleeve body unit and roll core keep equidistance and detachably connect, realizes the modularization and split type assembly of roll cover, the independent replacement and maintenance of single sleeve body unit are facilitated, without overall dismounting roll core or replacing entire roll cover, avoid the influence of frequent overall dismounting on equipment precision, save time and effort, significantly improve replacement efficiency, reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the technical field of tire inner liner extrusion equipment, and in particular to a quick-change profile roller structure. Background Technology

[0002] In tire inner liner extrusion equipment, the forming roller (also known as the shaping roller or compression roller) is a key component, mainly used for shaping, compacting, and surface finishing of the inner liner rubber compound extruded from the extruder. When changing the forming roller, it is essential to ensure the height of the roller changing carriage is maintained so that the forming roller and the roller core are horizontal. Otherwise, collisions or scrapes between the forming roller and the roller core may occur during the replacement process, and misalignment between the forming roller and the roller core can easily lead to damage or difficulty in replacement.

[0003] The existing forming roller structure includes an integral forming roller sleeve and a cylindrical roller core. When changing forming rollers, the entire roller sleeve needs to be removed. Specifically, the forming roller change process in the workshop involves: one person pushing the cart at a constant speed while another person holds the roller clamping device; once the two work together, the changing operation can begin. When the forming roller approaches the roller core, it must be moved slowly, and then the operator pushes the forming roller onto the roller core, positioning it correctly before pulling the roller inwards and outwards. If there are sudden changes in speed during the pulling process, the operation must be stopped immediately for inspection. Once no abnormalities are found, the operation can resume. The changing roller process requires two people working together and takes approximately 20 minutes, making the entire process time-consuming and labor-intensive. Furthermore, this method affects the stability of continuous operation of the extrusion equipment, and improper assembly and disassembly can easily lead to a decrease in equipment positioning accuracy, shortening the equipment's lifespan.

[0004] In view of this, this utility model is proposed. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of the aforementioned technologies and provide a quick-changeable roll structure. By designing the roll sleeve as a ring structure composed of multiple circumferentially arranged sleeve units, and ensuring that each sleeve unit is equidistant from the roll core and detachably connected, modular and separate assembly of the roll sleeve is achieved. This facilitates independent replacement and maintenance of individual sleeve units without the need for complete disassembly of the roll core or machine shutdown to replace the entire roll sleeve. This avoids the impact of frequent overall disassembly and assembly on equipment accuracy, saves time and effort, significantly improves changeover efficiency, and reduces equipment maintenance costs.

[0006] The specific technical solution provided by this utility model is as follows:

[0007] A quick-changeable roll structure includes a roll core and a roll sleeve. The roll sleeve is composed of multiple sleeve units arranged circumferentially. The multiple sleeve units are arranged around the roll core to form a ring structure. Each sleeve unit is parallel to the axis of the roll core and is equidistant from it. Each sleeve unit is detachably connected to the roll core.

[0008] Furthermore, the sleeve unit is engaged with the roller core.

[0009] Furthermore, the roller core includes a support mandrel and locking protrusions. The locking protrusions are evenly distributed on the outer periphery of the support mandrel, and each sleeve unit is provided with a groove that matches the locking protrusions. The sleeve unit is installed on the roller core by engaging with the grooves.

[0010] Furthermore, the support mandrel and the locking protrusion are rigidly connected by fasteners, or fixed together by welding, or are integrally molded structures.

[0011] Furthermore, the card protrusion includes a transverse protrusion and a longitudinal protrusion. The longitudinal protrusion protrudes outward by a predetermined distance along the radial axis of the roller core. A transverse protrusion is provided on the longitudinal protrusion. The cross-section of the transverse protrusion is arc-shaped. The longitudinal protrusion and the transverse protrusion intersect and the cross-section is cross-shaped.

[0012] Furthermore, the longitudinal convex plate extends beyond the transverse convex plate and is fitted into the groove of the sleeve unit, while the end face of the transverse convex plate at the end far from the roller core abuts against the inner wall of the roller sleeve.

[0013] Furthermore, the range of the included angle A between adjacent longitudinal and transverse convex plates is 90°. o <A≤120 o .

[0014] Furthermore, each individual housing unit is tile-shaped, and there are 3 to 7 housing units.

[0015] Furthermore, the outer wall surface of each sleeve unit is provided with a shaped curved surface of different shapes.

[0016] This invention provides a quick-change molding roller structure, which has the following advantages compared with the prior art:

[0017] (1) By designing the roller sleeve as a ring structure spliced ​​together by multiple sleeve units arranged in the circumferential direction, and keeping each sleeve unit equidistant from the roller core and detachably connected, the modular and split assembly of the roller sleeve is realized, which facilitates the independent replacement and maintenance of a single sleeve unit. There is no need to disassemble the roller core or stop the machine to replace the entire roller sleeve, avoiding the impact of frequent overall disassembly and assembly on the equipment accuracy, saving time and effort, significantly improving replacement efficiency, and reducing maintenance costs;

[0018] (2) After the roller core is assembled with all the sleeve units of the roller sleeve through the carding protrusion, a complete cylindrical roller working surface is formed. The outer surface of each tile is provided with a different shaped forming surface, which can be used to press tire inner liner film with different shape requirements. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the roller core in this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the sleeve unit in this utility model;

[0022] Figure 4 This is another structural schematic diagram of the sleeve unit in this utility model;

[0023] Figure 5 This is a schematic diagram of the end face structure of the medium roller structure of this utility model.

[0024] Marked in the image:

[0025] 1. Roller core; 11. Support mandrel; 12. Engraving; 121. Longitudinal convex plate; 122. Transverse convex plate;

[0026] 2. Roller sleeve; 21. Sleeve unit; 22. Groove. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] As attached Figures 1-5As shown, a quick-changeable roller structure includes a roller core 1 and a roller sleeve 2. The roller sleeve 2 is composed of multiple sleeve units 21 arranged circumferentially. The multiple sleeve units 21 form a ring structure with the roller core 1 as the center. Each sleeve unit 21 is parallel to the axis of the roller core 1 and is equidistant from it. Each sleeve unit 21 is detachably connected to the roller core 1.

[0031] It should be noted that this application achieves modular and separate assembly of the roller sleeve 2 by designing the roller sleeve 2 as a ring structure spliced ​​together from multiple sleeve units 21 arranged circumferentially, and by keeping each sleeve unit 21 equidistant from the roller core 1 and detachably connected. This structure facilitates the independent replacement and maintenance of individual sleeve units 21 without the need to disassemble the roller core 1 or stop the machine to replace the entire roller sleeve 2, significantly improving replacement efficiency and reducing maintenance costs; at the same time, the uniform distribution of each sleeve unit 21 ensures the consistency of the roller surface profile and the stability of operation during the forming process.

[0032] As attached Figures 3-4 As shown, each sleeve unit 21 is tile-shaped, and each sleeve unit 21 is provided with one or more grooves 22 for fixing and connecting the sleeve unit 21.

[0033] The length of the sleeve unit 21 is equal to or less than the length of the roller core 1, so that the sleeve unit 21 can be effectively and adequately supported after being installed on the roller core 1.

[0034] Furthermore, the complete roller sleeve 2 is composed of 3-7 sleeve units 21. The limited number ensures the structural integrity and circumferential rigidity of the roller sleeve 2 while balancing the degree of modularity and the reasonable size of individual sleeve units; too few units would result in individual units being too large and inconvenient to replace; too many units would increase the number of interfaces and assembly complexity.

[0035] Each sleeve unit 21 has a molding surface of different shapes on its outer wall, which can be used to press tire inner liner films with different shape requirements.

[0036] Alternatively, the sleeve unit 21 can be made of lightweight alloy material or other rigid and low-density material. The low-weight sleeve unit 21 can be operated by a single person. When performing a changeover operation, the corresponding sleeve unit 21 can be replaced to reduce the burden on the operator.

[0037] As an embodiment of this application, the sleeve unit 21 is engaged with the roller core 1. This engagement connection allows for quick assembly and disassembly of the sleeve unit 21 and the roller core 1 without the need for tools, further improving replacement speed and ease of operation. While ensuring connection reliability, the engagement structure simplifies the connection mechanism, reduces the number of parts, and lowers the complexity and failure rate of roller sleeve 2 replacement. It is particularly suitable for tire production lines that frequently change specifications, improving the equipment's flexible production capabilities.

[0038] Furthermore, the roller core 1 includes a supporting mandrel 11 and a retaining protrusion 12, as shown in the attached figure. Figure 2 As shown, the protrusions 12 are evenly distributed on the outer periphery of the support mandrel 11, and each sleeve unit 21 is provided with a groove 22 that matches the protrusions 12. The sleeve unit 21 is engaged and installed on the roller core 1 through the groove 22.

[0039] It should be further explained that by setting evenly distributed locking protrusions 12 on the outer periphery of the support mandrel 11 and configuring matching grooves 22 on the sleeve unit 21, a mutually matching locking interface is formed. This design achieves precise positioning and circumferential limiting of the sleeve unit 21, preventing it from rotating or shifting during operation. At the same time, the mating structure of the locking protrusions 12 and grooves 22 has good load-bearing capacity, effectively transmitting torque and radial force, ensuring operational stability. Furthermore, the modular interface facilitates serialized design and mass production, improving the equipment's versatility and maintainability.

[0040] Alternatively, the support mandrel 11 and the locking protrusion 12 can be rigidly connected by fasteners, fixed together by welding, or be a one-piece molded structure. Those skilled in the art can choose the connection method between the support mandrel 11 and the locking protrusion 12 according to the actual application scenario, as long as it meets the actual application requirements.

[0041] Preferably, the support mandrel 11 and the locking protrusion 12 are integrally molded structures, which ensure the connection strength and structural stability between the locking protrusion 12 and the mandrel, and can withstand the radial pressure and vibration load applied by the rubber material during the molding process, thus preventing the locking protrusion 12 from loosening or falling off.

[0042] As an embodiment of this application, the card protrusion 12 includes a transverse protrusion 122 and a longitudinal protrusion 121. The longitudinal protrusion 121 protrudes outward by a predetermined distance along the radial axis of the roller core 1. The transverse protrusion 122 is provided on the longitudinal protrusion 121. The cross-section of the transverse protrusion 122 is arc-shaped, as shown in the attached figure. Figure 1 , 2 As shown in Figure 5, the longitudinal convex plate 121 and the transverse convex plate 122 intersect and the cross section is cross-shaped.

[0043] The structural design of the transverse convex plate 122 and the longitudinal convex plate 121 in the cam 12 not only enhances the structural strength and bending resistance of the cam 12 itself, but also achieves radial positioning and support through the surface contact between the arc-shaped transverse convex plate 122 and the inner wall of the sleeve unit 21, effectively dispersing contact stress and reducing local wear. In addition, the structural design of the cam 12 can provide stable limiting for the sleeve unit 21 in both the circumferential and axial directions, improving the overall running accuracy and dynamic balance performance of the roller sleeve 2.

[0044] Furthermore, the protrusion of the longitudinal protrusion 121 extending beyond the transverse protrusion 122 is fitted into the groove 22 of the sleeve unit 21, and the plate end face of the transverse protrusion 122 at the end far from the roller core 1 abuts against the inner wall of the roller sleeve 2.

[0045] Specifically, the protrusion of the longitudinal convex plate 121 is embedded in the groove 22 to achieve circumferential positioning and anti-torsional function, while the end face of the transverse convex plate 122 abuts against the inner wall of the roller sleeve 2, realizing a dual axial and radial support for the sleeve unit 21. This dual contact structure constrains the sleeve unit 21 in multiple degrees of freedom, significantly improving the connection stiffness and stability, and effectively suppressing vibration and displacement under high-speed operation. At the same time, the contact surface is reasonably distributed, the load is evenly transmitted, the service life of the component is extended, and the geometric accuracy of the forming surface is guaranteed.

[0046] Furthermore, the included angle A between adjacent longitudinal convex plate 121 and transverse convex plate 122 ranges from 90°. o <A≤120 o The limitation of this angle range optimizes the stress distribution of the cam 12, avoids stress concentration problems caused by sharp angle connections, and improves the fatigue strength and reliability of the structure. At the same time, this angle design ensures sufficient support area while facilitating the installation and disassembly of the sleeve unit 21, especially for smooth insertion, thus improving assembly efficiency and ease of operation.

[0047] Compared with the prior art, the above embodiments of this application have the following beneficial technical effects:

[0048] By designing the roller sleeve 2 as a ring structure spliced ​​together by multiple sleeve units 21 arranged circumferentially, and keeping each sleeve unit 21 equidistant from the roller core 1 and detachably connected, the modular and split assembly of the roller sleeve 2 is realized. This facilitates the independent replacement and maintenance of a single sleeve unit 21, without the need to completely disassemble the roller core 1 or stop the machine to replace the entire roller sleeve 2. This avoids the impact of frequent overall disassembly and assembly on the accuracy of the equipment, saves time and effort, significantly improves replacement efficiency, and reduces maintenance costs.

[0049] After the roller core 1 is installed and combined with all the sleeve units 21 of the roller sleeve 2 through the cam 12, a complete cylindrical roller working surface is formed. The outer surface of each tile is provided with a forming curved surface of different shapes, which can be used to press tire inner liner films with different shape requirements.

[0050] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A quick-changeable roller structure, comprising a roller core and a roller sleeve, characterized in that, The roller sleeve is composed of multiple sleeve units arranged circumferentially. The multiple sleeve units form a ring structure around the roller core. Each sleeve unit is parallel to the axis of the roller core and is equidistant from it. Each sleeve unit is detachably connected to the roller core.

2. The quick-changeable molding roller structure according to claim 1, characterized in that, The sleeve unit is engaged with the roller core.

3. The quick-changeable molding roller structure according to claim 2, characterized in that, The roller core includes a support mandrel and locking protrusions. The locking protrusions are evenly distributed on the outer periphery of the support mandrel. Each sleeve unit is provided with a groove that matches the locking protrusions. The sleeve unit is engaged and installed on the roller core through the grooves.

4. The quick-change molding roller structure according to claim 3, characterized in that, The support mandrel and the card protrusion are rigidly connected by fasteners, or fixed together by welding, or are integrally molded structures.

5. A quick-changeable molding roller structure according to claim 3 or 4, characterized in that, The card protrusion includes a transverse protrusion and a longitudinal protrusion. The longitudinal protrusion protrudes outward by a predetermined distance along the radial axis of the roller core. The transverse protrusion is provided on the longitudinal protrusion. The cross-section of the transverse protrusion is arc-shaped. The longitudinal protrusion intersects with the transverse protrusion and the cross-section is cross-shaped.

6. The quick-change molding roller structure according to claim 5, characterized in that, The longitudinal protrusion plate extends beyond the transverse protrusion plate and is fitted into the groove of the sleeve unit. The end face of the transverse protrusion plate, which is far from the roller core end, abuts against the inner wall of the roller sleeve.

7. The quick-changeable molding roller structure according to claim 5, characterized in that, The included angle A between the adjacent longitudinal convex plate and the transverse convex plate is in the range of 90°. o <A≤120 o .

8. The quick-changeable molding roller structure according to claim 1, characterized in that, Each of the sleeve units is tile-shaped, and there are 3 to 7 sleeve units.

9. The quick-change molding roller structure according to claim 1, characterized in that, Each of the aforementioned sleeve units has a shaped curved surface on its outer wall.

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