Vulcanizing machine for tire without tire burrs
By setting a sealed vulcanizing chamber structure in the vulcanizing machine and using a vacuum pump to achieve tire vulcanization under negative pressure, the problems of insufficient rubber and rubber hair on the tread are solved, realizing efficient production of tires without rubber hair, reducing modification costs and improving the applicability of molds.
Patent Information
- Application Number
- CN202423292021.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing vulcanizing machines are prone to problems such as insufficient rubber and rubber fibers in the tire vulcanization process. Furthermore, existing solutions require extensive modifications to the molds, which affects mold precision and increases costs.
A vulcanizing machine for tires without tread hair was designed. By installing a middle sleeve over the clamping plate assembly and setting an outer cover with a sealed connection between the upper and lower covers, a sealed vulcanizing chamber is formed. The tire vulcanization is achieved under negative pressure by using a vacuum pump, which avoids the phenomenon of insufficient rubber and rubber hair on the tire tread.
It achieves high-quality vulcanization molding of tires without tread hair, ensuring the molding quality of the tires, without requiring extensive modifications to existing vulcanizing machines, adapting to multiple sets of molds, and reducing labor costs.
Smart Images
Figure CN223803138U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to vulcanizing machine manufacturing and tire manufacturing technical field, especially a kind of vulcanizing machine for tire without hair. BACKGROUND
[0002] At present, radial tire is applied more and more widely, and the tread pattern part of tire is an important component of tire. Nowadays, the tire pattern is more and more complex, and the pattern root exhaust is not smooth during tire vulcanization forming, and the phenomenon of tread glue deficiency occurs. The current solution is to process multiple exhaust holes on the side of the mold tread pattern, which causes a large number of glue hairs on the tread after the tire is removed, and the glue hairs need to be removed subsequently.
[0003] In order to remove the tire glue hair, each company is committed to researching vacuum tire mold, which has strict requirements for the repeat positioning accuracy of the mold and the service life of the sealing ring. There is no mature solution at present. There is also no vulcanizing machine to realize the production of tire without hair. SUMMARY
[0004] The technical problem to be solved by the utility model is to provide a vulcanizing machine for tire without hair, which can form a sealed vulcanization space to facilitate vacuumizing, and the side of the pattern no longer needs to be processed with exhaust holes to avoid the occurrence of glue hair on the tread. Such vulcanizing machine is simple to manufacture, easy to maintain, low in cost, does not affect the accuracy of the mold, and is suitable for molds of the same series and specifications.
[0005] In order to solve the above technical problem, the utility model provides a vulcanizing machine for tire without hair, which comprises a center mechanism and a chuck assembly connected to the center mechanism and used for clamping a tire blank. The chuck assembly is provided with a middle sleeve. The chuck assembly comprises a lower steel ring located below the tire blank and an upper steel ring located above the tire blank. A lower side plate is arranged below the lower steel ring, and an upper side plate is arranged below the upper steel ring. A pattern block corresponding to the chuck assembly is arranged in the middle sleeve. An upper sealing plate, an upper heat plate and an upper supporting plate are sequentially connected to the upper part of the middle sleeve from bottom to top. A base, a lower sealing plate and a lower heat plate are sequentially connected to the lower part of the middle sleeve from top to bottom. The structure is characterized in that: an outer cover body is sealingly connected between the upper sealing plate and the lower sealing plate. The outer cover body comprises an upper cover body sealingly connected to the upper sealing plate and a lower cover body sealingly connected to the lower sealing plate. The upper cover body and the lower cover body can be sealingly inserted. A closed and annular vulcanization cavity can be formed between the upper sealing plate, the outer cover body and the lower sealing plate. An air exhaust hole connected to a vacuum pump and capable of vacuumizing the vulcanization cavity is arranged on the upper cover body or the lower cover body.
[0006] With the above structure, the outer cover (which can seal the interlocking upper and lower covers) allows for the formation of a sealed vulcanizing chamber without any modifications to the existing vulcanizing machine mold. This facilitates vacuuming, preventing tire hairs from forming during tire tread molding and vulcanization, and eliminating tread rubber shortages. It achieves tire vulcanization molding under vacuum (actually negative pressure), ensuring tire molding quality. Furthermore, it does not require extensive modifications to the existing vulcanizing machine and can be adapted to multiple sets of tire vulcanizing molds in the same series, offering wide applicability and low labor costs.
[0007] The inner sleeve has an annular cavity with multiple air intake holes. The upper cover has an observation hole with a sealed window cover. The window cover is connected to a connecting pipe, and at least one of the air intake holes is connected to the connecting pipe.
[0008] The upper cover and the upper sealing plate are integrally formed to achieve a sealed connection between them; the lower sealing plate and the lower cover are integrally formed to achieve a sealed connection between them.
[0009] The lower surface of the upper sealing plate is provided with an annular recess, the annular recess having at least two connecting surfaces. The top of the upper cover is provided with a connecting part adapted to the annular recess, and an upper sealing plate sealing element is installed between the connecting part and the annular recess.
[0010] The lower sealing plate is fixedly connected to the lower cover, and a lower sealing plate sealing element is provided between the two.
[0011] At least one of the lower cover and the upper cover has a sleeve wear-resistant component and a sleeve sealing component connected to its mating surface, and the outer surface of the sleeve wear-resistant component protrudes from the mating surface.
[0012] The wear-resistant part of the cover is a whole ring structure or a multi-segment structure that is intermittently arranged along the interlocking mating surface.
[0013] The middle sleeve is connected to the upper sealing plate, the upper heating plate, and the upper support plate by an upper bolt, and the bottom threaded section of the upper bolt is screwed into the middle sleeve. A first sealing ring is provided between the middle sleeve and the upper sealing plate, and a second sealing ring is provided between the upper sealing plate and the upper heating plate. A positioning ring is provided between the upper heating plate and the upper support plate, and a third sealing ring is provided between the positioning ring and the upper heating plate and the upper support plate respectively.
[0014] A fourth sealing ring is installed between the lower side plate and the base, and a fifth sealing ring is installed between the base and the lower sealing plate.
[0015] The upper support plate is sealed with a support base in the middle, and a hydraulic cylinder assembly that can penetrate deep into the vulcanizing chamber is connected to the middle of the support base. The piston rod of the hydraulic cylinder assembly is connected to a flange, and the flange is poweredly connected to an upper cover that can press against the clamping plate assembly.
[0016] In summary, the connection and sealing structure between the upper cover and the upper sealing plate and the lower sealing plate and the lower cover can effectively ensure the sealing effect of the vulcanization cavity, ensure the vacuum effect, and thus ensure the tire vulcanization molding quality; the sealing structure between the upper cover and the lower cover can further ensure the sealing effect of the above-mentioned vulcanization cavity, and thus ensure the tire vulcanization molding quality; the structure of the sealing ring of the corresponding components such as the middle sleeve, the upper sealing plate, and the upper hot plate can ensure the sealing effect of the entire vulcanization cavity, and further ensure the tire vulcanization quality.
[0017] In summary, the utility model discloses can guarantee that tire is carried out vulcanization under vacuum state, has the advantages of simple manufacture, one machine multiple uses, cost saving and increased enterprise's benefit. BRIEF DESCRIPTION OF DRAWINGS
[0018] The specific embodiment of the utility model will be further described in detail in combination with the drawings:
[0019] Figure 1 It is the structure schematic diagram of an embodiment of the utility model;
[0020] Figure 2 It is Figure 1 It is the structure schematic diagram of another use state of the embodiment;
[0021] Figure 3 It is Figure 2 It is the structure schematic diagram of the enlarged A area in the embodiment;
[0022] Figure 4 It is the structure schematic diagram along the direction of B-B line section in the embodiment; Figure 2
[0023] Figure 5 It is the structure schematic diagram of the upper cover and the lower cover in another embodiment of the utility model;
[0024] In the figure: 1. Center mechanism; 2. Lower bead ring; 3. Lower side plate; 4. Base; 5. Lower sealing plate; 6. Lower hot plate; 7. Lower cover; 8. Air extraction hole; 9. Upper cover; 10. Heat insulation sleeve; 11. Middle sleeve; 12. Upper sealing plate; 13. Upper hot plate; 14. Upper supporting plate; 15. Upper cover; 16. Positioning ring; 17. Supporting seat; 18. Upper supporting plate sealing element; 19. Flange plate; 20. Oil cylinder sealing element; 21. Oil cylinder assembly; 22. Guide shaft; 23. Spacer sleeve; 24. Spacer sleeve sealing element; 25. Third sealing ring; 26. Second sealing ring; 27. Chuck assembly; 28. First sealing ring; 29. Upper sealing plate sealing element; 30. Window cover sealing element; 31. Window cover; 32. Sealing sleeve wear-resistant element; 33. Sealing sleeve sealing element; 34. Lower sealing plate sealing element; 35. Pattern block; 36. Tire blank; 37. Capsule; 38. Lower bead ring sealing element; 39. Fourth sealing ring; 40. Fifth sealing ring; 41. Sixth sealing ring; 42. Upper bolt; 45. Upper side plate. DETAILED DESCRIPTION
[0025] Referring to Figures 1 to 4 The utility model provides a kind of embodiment for the vulcanizing machine of tireless tire, Figure 1 Only part structure of vulcanizing machine is shown in the embodiment, in prior art, the overall structure of vulcanizing machine is prior art, it not only includes each component in the embodiment, of course, also includes power component and corresponding support component, and its structure is not described in detail here. In the embodiment, center mechanism 1 connected to rack and chuck assembly 27 for clamping tire blank connected to center mechanism 1 are included, chuck assembly 27 can include lower bead ring below tire blank and upper bead ring above tire blank, lower side plate 3 is provided below corresponding lower bead ring, upper side plate 45 is provided below corresponding upper bead ring, chuck assembly 27 is sleeved with middle sleeve 11, middle sleeve 11 is provided with pattern block 35 corresponding to chuck assembly 27, chuck assembly 27 is further fixedly connected with capsule 37, tire blank 36 to be vulcanized is located between capsule 37 and pattern block 35, the structure of above-mentioned complete vulcanization inner mold is also introduced in detail in prior art, and it is not described in detail here.
[0026] Referring to the drawings, the upper part of the middle sleeve 11 is sequentially connected with an upper sealing plate 12, an upper heat plate 13 and an upper supporting plate 14 from bottom to top, the lower part of the middle sleeve 11 is sequentially connected with a base 4, a lower sealing plate 5 and a lower heat plate 6 from top to bottom, a lower side plate 3 is arranged between the lower part of the chuck assembly 27 and the base 4, an outer cover is sealingly connected between the upper sealing plate 12 and the lower sealing plate 5, the outer cover comprises an upper cover 9 sealingly connected with the upper sealing plate 12 and a lower cover 7 sealingly connected with the lower sealing plate 5, the upper cover 9 and the lower cover 7 can be sealingly inserted into each other, the upper sealing plate 12, the outer cover and the lower sealing plate 5 can form a closed annular vulcanization cavity, an air exhaust hole 8 capable of being connected with a vacuum pump and capable of exhausting the vulcanization cavity is arranged on the upper cover 9 or the lower cover 7, when the vacuum pump is started, the gas in the vulcanization cavity is sucked into the annular cavity through other air suction holes and then is discharged from the vacuum pump, so that the entire vulcanization cavity forms a negative pressure state of about 0.1 MPa. In the embodiment, the outer diameter of the upper cover 9 is greater than the outer diameter of the lower cover 7, that is, the upper cover 9 is sleeved outside the lower cover 7, of course, the structure that the lower cover 7 is sleeved outside the upper cover 9 can also be adopted, which is not described in detail here, when the upper cover 9 and the lower cover 7 are inserted into each other, the surface of the two that are sealingly attached to each other is an insertion and attachment surface. In the embodiment, a ring cavity is arranged in the middle sleeve 11, a plurality of air suction holes are arranged on the ring cavity, an observation hole is arranged on the upper cover 9, a window cover 31 is sealingly connected to the observation hole, the window cover 31 is connected with a connecting pipe 43 and at least one of the air suction holes is connected with the connecting pipe 43, in the embodiment, two connecting pipes 43 are arranged, and the two connecting pipes 43 are respectively connected with two air suction holes. The inner surface of the upper cover 9 and the outer surface of the lower cover 7 are the insertion and attachment surface; the air exhaust hole is arranged on the upper cover 9, the window cover 31 can be connected with the outer surface of the upper cover 9 in a detachable structure, for example, a bolt connection structure, a window cover sealing ring 30 is arranged between the window cover 31 and the upper cover 9 to ensure the sealing performance of the vulcanization cavity, and the window cover 31 can also be arranged on the lower cover 7 in the same structure. In the embodiment, a heat preservation sleeve 10 made of heat preservation material is further attached to the outer side of the upper cover 9.
[0027] Referring to the drawings, in order to ensure the sealing performance of the outer cover and keep the vulcanization cavity in a sealed state, the insertion and attachment surface of at least one of the lower cover 7 and the upper cover 9 is connected with a sleeve wear-resistant part 32 and a sleeve sealing part 31, in the embodiment, the sleeve wear-resistant part 32 and the sleeve sealing part 31 are both connected to the insertion and attachment surface of the lower cover 7, of course, the sleeve sealing part 31 can also be arranged on the upper cover 9, the outer surface of the sleeve wear-resistant part 32 protrudes from the insertion and attachment surface, the sleeve wear-resistant part 32 is a whole circle structure or a multi-segment structure arranged along the insertion and attachment surface and intermittently, for example Figure 4 and Figure 5 The embodiment adopts Figure 4The structure in the middle, in other embodiments of the utility model, can adopt Figure 5 The structure in the middle, the envelope wear -resisting piece 32 can adopt the inlay solid connection mode and is connected in the ring groove of lower cover body 7. The above-mentioned envelope wear -resisting piece 32 can adopt the structure of copper ring, can be wear -resisting and can realize the smoothness of sliding friction in the process of inserting, certainly can adopt nylon ring, utilize the wear -resisting and self -lubricating performance of nylon ring, make wear -resisting and sealing effect more ideal and ideal, the above-mentioned envelope sealing piece 31 can adopt O type sealing ring or other structure's sealing ring.
[0028] Referring to the drawings, the lower surface of the upper cover plate 12 is provided with a ring concave platform, and the ring concave platform has at least two connecting surfaces. In the drawings of the embodiment, horizontal and vertical connecting surfaces are provided. The top of the upper cover body 9 is provided with a connecting part adapted to the ring concave platform. An upper cover plate sealing piece 29 is arranged between the connecting part and the ring concave platform. The above-mentioned connecting surfaces form a labyrinth seal structure. The upper cover plate sealing piece 29 is arranged on each sealing surface. The upper cover plate sealing piece 29 can be an O-shaped sealing ring or a sealing ring with other structures. The connection between the upper cover body 9 and the upper cover plate 12 can adopt a bolt connection structure. The position of the bolt is located outside the upper cover plate sealing piece 29. The lower cover plate 5 and the lower cover body 7 are fixedly connected and are provided with a lower cover plate sealing piece 34 therebetween. The fixed connection between the lower cover plate 5 and the lower cover body 7 can adopt a bolt connection structure. The above-mentioned lower cover plate sealing piece 34 can be an O-shaped sealing ring or a sealing ring with other structures. Of course, in other embodiments, the following structures can also be used. The upper cover body 9 and the upper cover plate 12 are integrally formed to be sealingly connected therebetween. The lower cover plate 5 and the lower cover body 7 are integrally formed to be sealingly connected therebetween.
[0029] The middle sleeve 11 is connected with the upper cover plate 12, the upper heat plate 13 and the upper supporting plate 14 by the upper bolt 42, and the bottom threaded section of the upper bolt 42 is screwed in the middle sleeve 11. The first sealing ring 28 is arranged around the bottom threaded section between the middle sleeve 11 and the upper cover plate 12. The second sealing ring 26 is arranged between the upper cover plate 12 and the upper heat plate 13. The positioning ring 16 is arranged between the upper heat plate 13 and the upper supporting plate 14, and the third sealing ring 25 is arranged between the positioning ring 16 and the upper heat plate 13 and the upper supporting plate 14 respectively. The fourth sealing ring 39 is arranged between the lower side plate 3 and the base 4. The fifth sealing ring 40 is arranged between the base 4 and the lower cover plate 5. The lower cover plate 5 is connected with the lower heat plate 6 by the lower bolt. The sixth sealing ring 41 is arranged on the outer periphery of the lower bolt, so that the threaded connection is sealed. The chuck assembly 27 further comprises the lower steel ring 2 above the lower side plate 3. The lower steel ring sealing element 38 is arranged between the lower steel ring 2 and the lower side plate 3. The lower steel ring sealing element 38 can be an O-shaped sealing ring or a sealing ring with other structures. The arrangement of the above sealing rings is to ensure the sealing performance of the curing cavity. The sealing rings can be arranged in the groove of the corresponding parts of the existing curing machine. The sealing rings should be arranged at the peripheral position of the curing cavity. The specific structure of the groove and the embedded sealing ring is the prior art, which is not described in detail here.
[0030] As shown in the drawings, the middle part of the upper supporting plate 14 is sealingly connected with the support seat 17. The oil cylinder assembly 21 is connected with the middle part of the support seat 17 and can extend into the curing cavity. The upper supporting plate sealing element 18 is arranged between the upper supporting plate 14 and the support seat 17. The oil cylinder sealing element 20 is arranged between the outer extension of the oil cylinder assembly 21 and the support seat 17. The upper supporting plate sealing element 18 and the oil cylinder sealing element 20 can be O-shaped sealing rings or sealing rings with other structures. In the embodiment, the piston rod of the oil cylinder assembly 21 is connected with the guide shaft 22 which synchronously moves with the piston rod. The support seat 17 is provided with a through hole. The spacer 23 is arranged in the through hole. The guide shaft 22 is arranged in the spacer 23. The guide shaft 22 and the spacer 23 are cooperated with the light shaft structure. The guide shaft 22 and the spacer 23 are sealed by the spacer sealing element 24. The spacer sealing element 24 can be an O-shaped sealing ring or a sealing ring with other structures. The piston rod of the oil cylinder assembly 21 is connected with the flange plate 19. The flange plate 19 is connected with the upper cover 15 which can press the chuck assembly 27.
[0031] With reference to the drawings, the action process of the utility model is as follows: when the vulcanizing machine is in the mold opening state, the tire blank 36 is placed on the lower side plate 3, the center mechanism 1 drives the chuck assembly 27 and the capsule 37 to preform the tire blank 36, the vulcanizing machine drives the sealing cover 9 to move downwards by the power component, the flange plate 19 drives the upper cover 15 to move downwards synchronously, when the sealing cover 9 moves to the position shown in Fig. 2, the clearance between the inner hole of the pattern block 35 and the lower side plate 3 is D, D needs to be greater than the depth of the tire pattern, at this time, the cavity of the vulcanizing machine is in the sealed state, the cavity of the vulcanizing machine is operated by the air extraction hole 8 to extract vacuum, until the air pressure in the cavity reaches negative 0.1 Mpa, the upper hot plate 13 continues to drive the sealing cover 9 to move downwards, until the mold is completely closed, and the tire begins to vulcanize.
[0032] The utility model not only can use the transformation on the existing vulcanizing machine, but also can make new products according to the existing technology in the vulcanizing machine, other structures adopt the structure of the vulcanizing machine in the prior art, and the corresponding structure of the vulcanizing cavity and sealing can adopt the structure in the utility model.
[0033] The utility model can also have other embodiments, and other technical solutions formed in the description of the claims will not be described one by one, the utility model is not limited by the above embodiments, and equivalent changes and component replacement based on the above embodiments of the utility model are all within the protection scope of the utility model.
Claims
1. A vulcanizing machine for tireless tire, comprising a center mechanism (1) connected to a frame and a chuck assembly (27) connected to the center mechanism (1) and used for clamping a tire blank, the chuck assembly (27) comprising a lower steel ring located below the tire blank and an upper steel ring located above the tire blank, a lower side plate (3) is arranged below the lower steel ring, and an upper side plate (45) is arranged below the upper steel ring, the chuck assembly (27) is sleeved with a middle sleeve (11), the middle sleeve (11) is internally provided with a pattern block (35) arranged correspondingly to the chuck assembly (27), an upper portion of the middle sleeve (11) is sequentially connected with an upper sealing plate (12), an upper heat plate (13) and an upper supporting plate (14) from bottom to top, and a lower portion of the middle sleeve (11) is sequentially connected with a base (4), a lower sealing plate (5) and a lower heat plate (6) from top to bottom, characterized in that: The upper sealing plate (12) and the lower sealing plate (5) are sealingly connected with an outer cover body, the outer cover body comprises an upper cover body (9) sealingly connected with the upper sealing plate (12) and a lower cover body (7) sealingly connected with the lower sealing plate (5), the upper cover body (9) and the lower cover body (7) can be sealingly inserted, the upper sealing plate (12), the outer cover body and the lower sealing plate (5) can form a closed and annular vulcanization cavity, and the upper cover body (9) or the lower cover body (7) is provided with an air exhaust hole (8) which can be connected with a vacuum pump and can exhaust the vulcanization cavity.
2. The press for the tyreless tyre according to claim 1, characterised in that: The middle sleeve (11) is provided with a ring cavity, a plurality of air inlet holes are arranged on the ring cavity, an observation hole is arranged on the upper cover body (9), a window cover (31) is sealingly connected to the observation hole, and a connecting pipe (43) is connected to the window cover (31) and at least one of the air inlet holes is connected with the connecting pipe (43).
3. The press for the tyreless tyre according to claim 1, characterised in that: The upper cover body (9) and the upper sealing plate (12) are integrally formed to be sealingly connected with each other, and the lower sealing plate (5) and the lower cover body (7) are integrally formed to be sealingly connected with each other.
4. The press for the tyreless tyre according to claim 1, characterised in that: The lower surface of the upper sealing plate (12) is provided with a ring recess, and the ring recess has at least two connecting surfaces; the top of the upper cover body (9) is provided with a connecting portion corresponding to the ring recess; and an upper sealing plate sealing element (29) is arranged between the connecting portion and the ring recess.
5. The press for the tyreless tyre according to claim 1, characterised in that: The lower sealing plate (5) and the lower cover body (7) are fixedly connected and provided with a lower sealing plate sealing element (34) therebetween.
6. The press for the tyreless tyre according to any one of claims 1 to 5, characterised in that: At least one of the lower cover body (7) and the upper cover body (9) is provided with a sleeve wear-resistant element (32) and a sleeve sealing element (33) on the insertion and abutting surface thereof, and the outer surface of the sleeve wear-resistant element (32) protrudes from the insertion and abutting surface.
7. The machine for curing tyres without carcass hair according to claim 6, characterised in that: The sleeve wear-resistant element is an integral structure or a multi-segment structure arranged along the insertion and abutting surface.
8. The press for the tyreless tyre according to any one of claims 1 to 5, characterised in that: The middle sleeve (11) is connected with the upper sealing plate (12), the upper heat plate (13) and the upper supporting plate (14) through upper bolts (42), the bottom threaded section of the upper bolts is screwed into the middle sleeve (11), a first sealing ring (28) is arranged around the bottom threaded section between the middle sleeve (11) and the upper sealing plate (12), a second sealing ring (26) is arranged between the upper sealing plate (12) and the upper heat plate (13), a positioning ring (16) is arranged between the upper heat plate (13) and the upper supporting plate (14), and a third sealing ring (25) is arranged between the positioning ring (16) and the upper heat plate (13) and the upper supporting plate (14) respectively.
9. The press for the tyreless tyre according to any one of claims 1 to 5, characterised in that: A fourth sealing ring (39) is arranged between the lower side plate (3) and the base (4), and a fifth sealing ring (40) is arranged between the base (4) and the lower sealing plate (5).
10. The press for the tyre without carcass, according to any one of claims 1 to 5, characterised in that: The middle portion of the upper supporting plate (14) is sealingly connected with a supporting seat (17), the middle portion of the supporting seat (17) is connected with an oil cylinder assembly (21) which can penetrate into the vulcanization cavity, the piston rod of the oil cylinder assembly (21) is connected with a flange plate (19), and the flange plate (19) is drivingly connected with an upper cover (15) which can press against a chuck assembly (27).