A film dividing apparatus

Abstract

The utility model relates to a kind of film segmentation device, including support shaft, segmentation cutting knife and cutter, support shaft is connected with driving element transmission, and can rotate around its own central axis;Segmentation cutting knife is fixedly sleeved in the periphery of support shaft, and its outer edge is provided with cutting knife edge;Cutter is located in the side of support shaft, and its cutting edge and cutting knife edge are attached to form cutting point, the utility model can solve the technical problems that existing technology exists due to cutter wear influence cutting effect, due to plastic cloth is difficult to cut off completely and pollute film, influence tire quality.

Description

Technical Field

[0001] This utility model belongs to the technical field of tire production equipment, and specifically relates to a film splitting device. Background Technology

[0002] In tire manufacturing, the cutting of rubber sheets is a crucial process. The precision, efficiency, and quality of this cutting directly affect the performance of the finished tire and the overall production efficiency. Rubber sheets are typically composed of rubber composite materials, possessing a certain degree of adhesion and ductility. In subsequent molding processes, they need to be precisely cut to predetermined dimensions to ensure uniform bonding and structural stability between the layers of rubber.

[0003] Currently, the industry commonly uses a cylinder-driven cutting blade to cut the rubber sheet. This method involves pressing the cutter against the surface of a metal roller, causing the rubber sheet to be cut by compression between the blade and the roller. However, this traditional cutting method has several drawbacks. First, because both the metal roller and the cutter are made of rigid materials, the cutter is prone to wear over long-term use. As the blade gradually dulls, the cutting force decreases, leading to incomplete cutting and adhesion of the rubber material, affecting the quality of subsequent processing. Second, to prevent the rubber sheet from sticking together and for ease of transportation, the surface of the rubber sheet is usually covered with a layer of plastic padding. Under traditional cutting methods, if the plastic padding cannot be completely cut, forced stretching can easily cause elastic fracture, resulting in the broken plastic padding rebounding and adhering to the surface of the rubber sheet. Once the rubber sheet with plastic residue enters the subsequent tire molding process, it will seriously affect the uniformity of the tire's internal structure and may even cause defects such as delamination and bubbles, reducing the product qualification rate. Utility Model Content

[0004] In view of the shortcomings of existing technologies, a film splitting device is proposed to solve the technical problems of the cutting effect being affected by cutter wear and the film being contaminated due to the inability to completely cut the plastic pad, thus affecting tire quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A film splitting device, comprising: A support shaft, which is connected to the drive element and can rotate about its own central axis; A dividing cutter is fixedly sleeved around the support shaft, and its outer edge is provided with a cutting blade; The cutter is located on the side of the support shaft, and its blade is in contact with the blade of the cutting knife to form a cutting point.

[0006] The technical solution is further configured such that the dividing cutter is fixed to the support shaft by a bushing assembly; The bushing assembly includes two fixed bushings, and the dividing cutter is disposed between the two fixed bushings.

[0007] The technical solution is further configured such that a limiting ring is provided on the support shaft, the end of the bushing assembly abuts against the limiting ring, and is locked by a locking member.

[0008] The technical solution is further configured such that one end of a fixed bushing is provided with a limiting ring groove for the cutting blade to be inserted, and the other end of a fixed bushing is provided with a limiting boss that is inserted into the cutting blade.

[0009] The technical solution is further configured such that the dividing cutter includes a first annular portion and a second annular portion, the outer diameter of the first annular portion is smaller than the outer diameter of the second annular portion, the outer diameter of the second annular portion is equal to the outer diameter of the fixed bushing, and the cutting edge of the cutter is located at the end edge of the second annular portion near the first annular portion.

[0010] The technical solution is further configured such that the cutter is a disc structure with its blade located at the edge of the disc structure, and the cutter is rotatably mounted on the support assembly.

[0011] The technical solution is further configured such that the support assembly includes two cutter supports, and the cutter is rotatably disposed between the two cutter supports. The technical solution is further configured to include a pressure applying element, the movable end of which is connected to the support assembly, and the distance between the cutter and the dividing cutter is adjusted by the linear movement of the movable end.

[0012] The beneficial effects of this utility model are: By setting up a cutting blade and a dividing blade, the cutting blade and the dividing blade fit together to form a dynamic cutting point, which helps to distribute pressure, reduce wear, and ensure cutting effect; the double-blade cooperating shearing structure ensures that the film and plastic pad are cut completely and simultaneously, avoiding the plastic pad from sticking and contaminating the film. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the film splitting device in operation in an embodiment of this utility model; Figure 2 This is a schematic diagram of the film splitting device in an embodiment of this utility model; Figure 3 This is an assembly diagram of the dividing cutter, bushing assembly, and support shaft in an embodiment of this utility model; Figure 4 yes Figure 3 Sectional view of AA; Figure 5This is an exploded view of the dividing cutter, bushing assembly, and support shaft in an embodiment of this utility model; Figure 6 This is a schematic diagram of the dividing cutter in an embodiment of this utility model.

[0014] In the attached diagram: 1. Support shaft; 2. Left fixed bushing; 3. Right fixed bushing; 4. Film; 5. Cutter; 6. Cutter bracket; 7. Dividing cutter; 8. Limiting ring; 9. Internal thread section; 10. External thread section; 11. First ring part; 12. Second ring part; 13. Cutter blade. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0016] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0017] According to an embodiment of this utility model, a film splitting device is provided. Please refer to [link / reference]. Figures 1 to 6 ,include: Support shaft 1 is connected to the drive element and can rotate about its own central axis; A dividing cutter 7 is fixedly sleeved around the support shaft 1, and a cutting blade 13 is provided on its outer edge; The cutter 5 is located on the side of the support shaft 1, and its blade is in contact with the cutting blade 13 to form a cutting point.

[0018] During operation, the support shaft 1 is driven to rotate by a drive element. The film 4 is pulled to the support shaft 1 by a traction roller. As the support shaft 1 rotates, it pulls the film 4 past the contact point between the cutter blade and the cutting blade 13, thus splitting the film 4 in two. The split film 4 is then pulled to the next process by the traction roller. By setting the cutter 5 and the dividing cutting blade 7, the contact point between the cutter blade and the cutting blade 13 forms a dynamic cutting point, which helps to distribute pressure, reduce wear, and ensure cutting effect. The double-blade shearing structure ensures that the film and the plastic pad are cut completely and simultaneously, preventing the plastic pad from sticking and contaminating the film.

[0019] In a film splitting device according to this utility model, please refer to... Figures 1 to 6The dividing cutter 7 is fixed to the support shaft 1 by a bushing assembly; The bushing assembly includes a left fixed bushing 2 and a right fixed bushing 3, and the dividing cutter 7 is disposed between the left fixed bushing 2 and the right fixed bushing 3.

[0020] It should be noted that the left fixed bushing 2 and the right fixed bushing 3 are fully fitted around the support shaft 1, which evenly distributes the pressure from the cutter 5 on the dividing cutter 7 to the entire support shaft 1, which helps to reduce local stress on the support shaft 1 and extend the service life of the equipment.

[0021] Furthermore, the left fixed bushing 2 and the right fixed bushing 3 are both sleeved on the outer periphery of the support shaft 1, that is, the left fixed bushing 2 and the right fixed bushing 3 are detachably connected to the support shaft 1. This structural design facilitates the replacement of various components.

[0022] In a film splitting device according to this utility model, please refer to... Figures 1 to 6 A limiting ring 8 is provided on the support shaft 1, and the end of the bushing assembly abuts against the limiting ring 8 and is locked by a locking member. That is to say, after the dividing cutter 7 is clamped by the left fixed bushing 2 and the right fixed bushing 3, it is then secured by the locking member.

[0023] Furthermore, the limiting ring 8 protrudes from the body of the support shaft 1, and the limiting ring 8 cooperates with the locking element to prevent the bushing assembly and the dividing cutter 7 from axial displacement.

[0024] Furthermore, one end of the support shaft 1 is provided with an internal thread section 9, which is connected to the output end of the drive element through the internal thread section 9; the other end of the support shaft 1 is provided with an external thread section 10, which is engaged with a locking member to achieve locking, and the locking member is preferably a locking nut.

[0025] In a film splitting device according to this utility model, please refer to... Figures 1 to 6 The left fixed bushing 2 has a limiting annular groove at its end for the cutting blade 7 to be inserted, and the right fixed bushing 3 has a limiting boss at its end for being inserted into the cutting blade 7. Torque is transmitted through a mechanical interlocking structure to prevent relative rotation between the cutting blade 7 and the support shaft 1.

[0026] In a film splitting device according to this utility model, please refer to... Figures 1 to 6 The dividing cutter 7 includes a first ring portion 11 and a second ring portion 12. The outer diameter of the first ring portion 11 is smaller than the outer diameter of the second ring portion 12. The outer diameter of the second ring portion 12 is equal to the outer diameter of the fixed bushing. The cutting edge 13 of the cutter is located at the end edge of the second ring portion 12 near the first ring portion 11.

[0027] It should be noted that the dividing cutter 7 adopts a stepped double-ring structure, and the cutting blade 13 is located at the point of abrupt change in diameter, which is conducive to the formation of a stress concentration point, forcing the film 4 to break at this point.

[0028] In a film splitting device according to this utility model, please refer to... Figures 1 to 6 The cutter 5 is configured as a disc structure, with its blade located at the edge of the disc structure. The cutter 5 is rotatably mounted on the support assembly.

[0029] Furthermore, the support assembly includes two cutter supports 6, with the cutter 5 rotatably disposed between the two cutter supports 6. Each cutter support 6 includes a bearing structure, allowing the cutter 5 to rotate freely. During actual operation, the cutter 5 passively rotates due to the friction between itself and the film 4; this rotation reduces friction and extends its service life.

[0030] Specifically, the preferred angle of the cutting blade is 25°-35° to balance cutting resistance and service life.

[0031] In a film splitting device according to this utility model, please refer to... Figures 1 to 6 It also includes a pressure applying element, the movable end of which is connected to the support assembly. The linear movement of the movable end adjusts the distance between the cutter 5 and the dividing blade 7. This structural design uses the pressure applying element to move the support assembly and the cutter 5, thereby adjusting the distance between the cutter 5 and the dividing blade 7 and maintaining a constant cutting pressure. Preferably, the pressure applying element is a cylinder.

[0032] Specifically, the cutter 5 is located above the dividing cutter 7, and the movable end of the pressure application element moves vertically, driving the support assembly and the cutter 5 to rise and fall, so as to adjust the vertical distance between the cutter 5 and the dividing cutter 7.

[0033] During operation, the pressure application element is activated to press down the cutter 5, causing the cutter blade to come into contact with the cutting blade 13. The drive element is activated to rotate the support shaft 1, and the film 4 moves with the support shaft 1 to the cutting point. At the cutting point, the rotating cutting blade 13 and the passively rotating cutter blade form a shearing action, cutting the film 4 and the plastic pad simultaneously.

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0035] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0036] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0037] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0038] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A film splitting device, characterized in that, include: A support shaft, which is connected to the drive element and can rotate about its own central axis; A dividing cutter is fixedly sleeved around the support shaft, and its outer edge is provided with a cutting blade; The cutter is located on the side of the support shaft, and its blade is in contact with the blade of the cutting knife to form a cutting point.

2. The film splitting apparatus according to claim 1, characterized in that, The dividing cutter is fixed to the support shaft by a bushing assembly; The bushing assembly includes two fixed bushings, and the dividing cutter is disposed between the two fixed bushings.

3. The film splitting apparatus according to claim 2, characterized in that, A limiting ring is provided on the support shaft, and the end of the bushing assembly abuts against the limiting ring and is locked by a locking member.

4. The film splitting apparatus according to claim 2 or 3, characterized in that, One end of the fixed bushing is provided with a limiting ring groove for the cutting blade to be inserted, and the other end of the fixed bushing is provided with a limiting boss that is inserted into the cutting blade.

5. The film splitting apparatus according to claim 2, characterized in that, The cutting blade includes a first ring portion and a second ring portion. The outer diameter of the first ring portion is smaller than the outer diameter of the second ring portion. The outer diameter of the second ring portion is equal to the outer diameter of the fixed bushing. The cutting edge of the blade is located at the end edge of the second ring portion near the first ring portion.

6. The film splitting apparatus according to claim 1, characterized in that, The cutter is configured as a disc structure, with its blade located at the edge of the disc structure, and the cutter is rotatably mounted on the support assembly.

7. The film splitting apparatus according to claim 6, characterized in that, The support assembly includes two cutter supports, and the cutter is rotatably disposed between the two cutter supports.

8. The film splitting apparatus according to claim 6 or 7, characterized in that, It also includes a pressure applying element, the movable end of which is connected to the support assembly, and the distance between the cutter and the dividing cutter is adjusted by the linear movement of the movable end.

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