A clamping structure of a tire vulcanizing machine

Abstract

The present application relates to the field of locking structures, and in particular to a locking structure of a tire vulcanizer, comprising a fixed seat, a mold, and a locking member, wherein the mold is located inside the fixed seat, the locking member comprises a plurality of groups of locking members, and the plurality of groups of locking members are evenly distributed on the side wall of the fixed seat at the same angle, the locking member comprises an integrally connected bolt rod portion and a bolt head portion, the outer diameter of the outermost edge of the bolt head portion is less than or equal to the inner diameter of the bolt rod portion thread, the fixed seat is provided with a connecting portion, the bolt rod portion passes through the connecting portion and is threadedly connected to the connecting portion, and the bolt head portion is located outside the fixed seat. Since the diameter of the bolt head portion is less than or equal to the bolt rod portion, the bolt head portion can also pass through the connecting portion, and then the bolt rod portion is reversed until the bolt rod portion is completely separated from the connecting portion, and the locking member can be removed from the inside of the fixed seat. At this time, the deformed portion of the bolt rod portion does not need to pass through the fixed seat, and the replacement of the locking member can be completed quickly.

Description

Technical Field

[0001] The present application relates to the field of locking structures, and in particular to a locking structure of a tire vulcanizing machine. Background Art

[0002] In the tire molding process, the layer structure of the tire is first formed by bonding, and then the barrel-shaped tire layer is formed into a green tire by extrusion and folding. The green tire is then heated and vulcanized in a tire vulcanizer to finally form the tire.

[0003] The air tire vulcanizer is a type of tire vulcanizer, which mainly includes a barrel-shaped mold. During the molding process, the mold is first preheated, and then the green tire is placed in the mold. The mold is used to shape the green tire and vulcanization is carried out during the heating process.

[0004] During the vulcanization process, the stability of the mold must be ensured to ensure the quality of tire molding. Figure 1 As shown, the mold locking structure includes a fixed base 1, a mold 2, and a locking member 3. The mold 2 is located inside the fixed base 1. Both the fixed base 1 and the mold 2 are annular. The locking member 3 is a bolt that radially passes through the fixed base 1 and is threadedly connected to the fixed base 1. There are multiple locking members 3, which are evenly spaced along the circumference of the fixed base 1. At the same time, multiple groups of locking members 3 are also distributed along the circumference of the fixed base 1. By adjusting the insertion length of the locking member 3 on the fixed base 1, the locking member 3 can be used to tighten and fix the mold 2, and the coaxiality of the mold 2 and the fixed base 1 can be ensured.

[0005] The shortcoming of the above technology is that since the mold 2 is always in a high temperature state during the vulcanization process, the mold 2 will expand after being heated. Since the thickness of the mold 2 is relatively thick, and in order to avoid irreversible deformation of the mold 2 as much as possible, the strength of the locking part 3 is generally designed to be reduced. Therefore, the deformation amount each time is mostly concentrated on the locking part 3, which will cause the locking part 3 to bend and deform. After the locking part 3 is bent and deformed, it is difficult to unscrew it from the fixing seat 1. The deformed part of the locking part 3 needs to be cut, which will make replacement difficult. Summary of the Invention

[0006] In order to solve the problem of difficulty in replacing the locking member after deformation, the purpose of this application is to provide a locking structure of an air tire vulcanizer.

[0007] The present application provides a clamping structure of a tire vulcanizing machine, which adopts the following technical solution:

[0008] A locking structure of a tire vulcanizer includes a fixed seat, a mold and a locking piece. The mold is located on the inner side of the fixed seat. The locking piece includes multiple groups of locking pieces, and the multiple groups of locking pieces are evenly distributed on the side wall of the fixed seat at the same angle. The locking piece includes an integrally connected bolt rod and a bolt head. The outer diameter of the outermost edge of the bolt head is less than or equal to the inner diameter of the bolt rod thread. A connecting part is provided on the fixed seat. The bolt rod passes through the connecting part and is threadedly connected to the connecting part. The bolt head is located on the outer side of the fixed seat.

[0009] By adopting the above technical solution, after the tire is heated and vulcanized, once the bolt rod portion of the locking piece is deformed, the bolt head portion can be rotated to drive the bolt rod portion to rotate, and the bolt rod portion rotates relative to the connecting portion, thereby causing the bolt rod portion to separate from the mold, making it easier to remove the mold; since the diameter of the bolt head portion is smaller than or equal to the bolt rod portion, the bolt head portion can also pass through the connecting portion, and then the bolt rod portion is reversed until the bolt rod portion is completely separated from the connecting portion, and the locking piece can be removed from the inner side of the fixing seat. At this time, the deformed portion of the bolt rod portion does not need to pass through the fixing seat, and the locking piece can be quickly replaced.

[0010] Preferably, a mounting hole for the bolt rod to pass through is opened on the side wall of the fixing seat, and the fixing seat includes a connecting portion, and the connecting portion and the fixing seat are fixedly connected or detachably connected, and the bolt rod passes through the connecting portion and is threadedly connected to the connecting portion.

[0011] By adopting the above technical solution, the bolt rod part passes through the mounting hole and is connected to the thread of the connecting part. After the connecting part is relatively fixed, the bolt rod part can be rotated to move relative to the connecting part, thereby ensuring that the bolt rod part can abut the mold.

[0012] Preferably, the connecting portion is located on the inner side of the fixing seat, and the connecting portion abuts against the inner side of the fixing seat.

[0013] By adopting the above technical solution, when installing or removing the locking piece, a tool is used to clamp the connecting part so that it does not move, and then the bolt rod is rotated. The bolt rod can gradually approach the mold until the bolt rod is pressed against the mold. At this time, the connecting part is pressed against the inner wall of the fixing seat, and the mold is fixed by multiple sets of locking pieces; when removing and replacing the locking piece, it is only necessary to rotate the bolt rod relative to the connecting part to move the bolt rod away from the mold. After that, after taking out the mold, the connecting part, the bolt rod and the bolt head can be directly pulled out of the mounting hole from the inside of the fixing seat, thereby realizing quick disassembly and installation.

[0014] Preferably, the connecting portion is integrally connected to the fixing seat.

[0015] Preferably, the connecting portion can be inserted into the mounting hole from the inner side of the fixing seat, and the connecting portion is plug-fitted with the mounting hole.

[0016] By adopting the above technical solution, during the process of disassembling the locking piece, after the bolt rod part is separated from the mold and the mold is taken out, the connecting part together with the bolt rod part and the bolt head part can be directly pulled out of the mounting hole from the inner side of the fixing seat, which is convenient and quick.

[0017] Preferably, a limiting structure is provided on the connecting portion and the mounting hole to limit the connecting portion from rotating circumferentially along the mounting hole.

[0018] By adopting the above technical solution, the limiting structures on the connecting part and the mounting hole can limit the rotation of the connecting part relative to the mounting hole. At this time, when twisting the bolt rod, there is no need to use tools to limit the connecting part, which reduces the difficulty of operation.

[0019] Preferably, the connecting portion is a rotating body, and at least two positioning holes are provided on a side surface of the connecting portion close to the mold.

[0020] By adopting the above technical solution, a tool is inserted into the positioning hole of the connecting part. When the bolt rod is turned, the connecting part can be effectively prevented from rotating with the bolt rod, thereby ensuring that the bolt rod can move relative to the connecting part.

[0021] Preferably, the connecting portion is in a frustum shape, with the top of the frustum facing the fixing seat.

[0022] By adopting the above technical solution, the connecting part is easily inserted into the mounting hole.

[0023] Preferably, the bolt head has an inner hexagonal structure or an outer hexagonal structure.

[0024] To sum up, the present application has the following technical effects: by setting the maximum diameter of the outer contour of the bolt head to be less than or equal to the inner diameter of the thread of the bolt rod, it is convenient to remove the bolt rod from the fixing seat from the inside of the fixing seat, thereby reducing the difficulty of disassembling the locking member. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the current technology.

[0026] Figure 2 It is a partial schematic diagram highlighting the locking member structure in the first embodiment.

[0027] Figure 3 It is a schematic diagram of the exploded structure highlighting the mounting hole in the first embodiment.

[0028] Figure 4 It is a partial schematic diagram highlighting the locking member structure in the second embodiment.

[0029] Figure 5 It is a schematic diagram of the exploded structure highlighting the mounting hole in the second embodiment.

[0030] Figure 6 It is a partial schematic diagram highlighting the connection portion of the non-rotating body in Example 3.

[0031] Figure 7 It is a schematic diagram of the exploded structure highlighting the mounting hole that cooperates with the non-rotating body connecting portion in the third embodiment.

[0032] Figure 8 It is a partial schematic diagram highlighting the connection portion of the rotating body in the second embodiment.

[0033] Figure 9 It is a schematic diagram of the exploded structure highlighting the mounting hole that cooperates with the rotating body connection portion in the second embodiment.

[0034] Explanation of the accompanying reference numerals: 1. fixing seat; 11. mounting hole; 12. connecting portion; 121. positioning hole; 2. mold; 3. locking member; 31. bolt rod portion; 32. bolt head portion. DETAILED DESCRIPTION

[0035] Example 1

[0036] A clamping structure of a tire vulcanizing machine, combined with Figure 1 As shown, the embodiment includes a fixing base 1, a mold 2, and a locking member 3. The mold 2 is placed in the center of the fixing base 1. In this embodiment, the fixing base 1 and the mold 2 are annular, but polygonal shapes are also possible. The locking member 3 includes multiple groups of locking members 3, which are evenly spaced along the circumference of the fixing base 1. The angles between adjacent groups of locking members 3 are identical. After passing through the fixing base 1, the locking member 3 can abut the outer surface of the mold 2. The locking member 3 is threadedly connected to the fixing base 1.

[0037] like Figure 2 As shown, the locking member 3 includes a bolt shank 31 and a bolt head 32. The bolt head 32 is coaxial with the bolt shank 31 and is integrally connected to one end of the bolt shank 31. The bolt shank 31 is threaded. The diameter of the outermost contour of the bolt head 32 is less than or equal to the inner diameter of the thread on the bolt shank 31. The bolt head 32 can be configured as an external hexagonal structure or an internal hexagonal structure.

[0038] like Figure 3 As shown, a plurality of mounting holes 11 are provided on the fixing seat 1. The portion of the fixing seat 1 near the mounting holes 11 is called the connecting portion 12. The mounting holes 11 are threaded holes. The bolt rod portion 31 passes through the mounting holes 11 and is threadedly connected to the connecting portion 12. The bolt rod portion 31 is arranged along the radial direction of the fixing seat 1.

[0039] When installing the mold 2, first screw the rod 31 into the mounting hole 11 from the inside or outside of the fixing base 1. Then, place the mold 2 inside the fixing base 1. Then, rotate the rod 31, using the end of the rod 31 to firmly press against the mold 2. After the heat vulcanization, the expansion of the mold 2 may squeeze the rod 31, causing the rod 31 to bend inside the fixing base 1. The bending deformation usually occurs in the middle of the rod 31's length extending beyond the fixing base 1. At this time, the bolt head 31 is rotated by a tool to drive the bolt rod 31 to rotate together. Utilizing the threaded connection between the bolt rod 31 and the connecting portion 12, the bolt rod 31 is first rotated in the reverse direction, moving the bolt rod 31 away from the mold 2. The mold 2 is then removed, and the bolt rod 31 is rotated forward again. At this time, the bolt rod 31 moves toward the inside of the fixing seat 1. After the bolt head 32 enters the mounting hole 11, the bolt rod 31 can be clamped with a tool to drive the bolt rod 31 to rotate until the bolt rod 31 is released from the mounting hole 11. Since the bolt head 32 is smaller than the bolt rod 31, the locking member 3 can be directly removed from the inside of the fixing seat 1. During the entire removal process, the deformed portion of the bolt rod 31 does not pass through the mounting hole 11, making removal relatively easy and convenient.

[0040] Example 2

[0041] The difference from the first embodiment is that the connection method and connection structure of the locking member 3 and the fixing base 1 are changed, as follows.

[0042] like Figure 4 and Figure 5 As shown, a mounting hole 11 is provided on the fixing base 1 , a connecting portion 12 is provided on the inner side of the fixing base 1 , the bolt rod portion 31 passes through the mounting hole 11 and the connecting portion 12 , and the bolt rod portion 31 is threadedly connected to the connecting portion 12 .

[0043] When the mold 2 needs to be installed, the connecting portion 12 is first threaded onto the bolt portion 31. Then, the bolt portion 31 and the bolt head 32 are inserted into the mounting hole 11 from the inside of the fixing base 1, with the bolt head 32 extending beyond the outer wall of the fixing base 1. Subsequently, the mold 2 is placed inside the fixing base 1, and the connecting portion 12 is clamped with a tool to prevent it from rotating. The bolt portion 31 is then rotated, and the bolt portion 31 moves relative to the connecting portion 12 until the bolt portion 31 abuts the mold 2. At this point, the connecting portion 12 also abuts the inner wall of the fixing base 1.

[0044] To remove the locking member 3, first use a tool to grip the connecting portion 12, then rotate the bolt 31 to release the bolt 31 from the mold 2 so that it contacts and secures the mold 2. The mold 2 is then removed, and the bolt 31 and the connecting portion 12 can be directly removed from the inside of the fixing base 1. The connecting portion can then be rotated relative to the bolt 31 to remove the connecting portion 12 from the bolt head 32 of the bolt 31 for reuse.

[0045] In this embodiment, the connecting portion 12 is a hexagonal bolt, but structures of other shapes can also achieve the effect of this embodiment.

[0046] Example 3

[0047] The difference from the second embodiment lies in the connection and matching manner between the connecting portion 12 and the fixing base 1 , which is specifically as follows.

[0048] like Figure 6 and Figure 7 As shown, in this embodiment, the connecting portion 12 can be accommodated at the inner end of the mounting hole 11 during the installation process, and the connecting portion 12 can be withdrawn from the mounting hole 11 along the inner side of the fixing base 1 at any time.

[0049] like Figure 6 and Figure 7 As shown, when the connecting portion 12 is a non-rotating body, the end of the mounting hole 11 near the inner side of the fixing base 1 has a shape that matches the connecting portion 12. In this case, after the connecting portion 12 is placed in the mounting hole 11, a limiting structure can be formed by utilizing the shapes of the connecting portion 12 and the mounting hole 11. For example, the connecting portion 12 is configured as a hexagonal nut.

[0050] like Figure 8 and Figure 9 As shown, when the connecting portion 12 is a rotating body, the end of the mounting hole 11 near the inner side of the fixing base 1 has a shape that matches the connecting portion 12. To prevent the connecting portion 12 from rotating with the bolt portion 31 when the bolt portion 31 is rotated, the connecting portion 12 can be fixed with a tool. In this case, at least two positioning holes 121 can be formed on the side of the connecting portion 12 near the mold 2. The tool can be inserted into the positioning holes 121 on the connecting portion 12 to engage the connecting portion 12. At the same time, the connecting portion 12 can also be configured as a frustum, with the top of the frustum facing the fixing base 1. This makes it easier to insert the connecting portion 12 into the mounting hole 11.

[0051] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A mold locking structure of a tire vulcanizer, comprising a fixed seat (1), a mold (2) and a locking member (3), wherein the mold (2) is located inside the fixed seat (1), and the locking member (3) comprises a plurality of groups, and the plurality of groups of locking members (3) are evenly distributed on the side wall of the fixed seat (1) at the same angle. The invention is characterized in that: The locking member (3) comprises a bolt rod portion (31) and a bolt head portion (32) connected in one piece, the bolt head portion (32) being located at one end of the bolt rod portion (31), the outer diameter of the outermost edge of the bolt head portion (32) being smaller than or equal to the inner diameter of the thread of the bolt rod portion (31), the fixing seat (1) being provided with a connecting portion (12), the bolt rod portion (31) passing through the connecting portion (12) and being threadedly connected to the connecting portion (12), and the bolt head portion (32) being located outside the fixing seat (1).

2. The clamping structure of the air tire vulcanizing machine according to claim 1, characterized in that: A mounting hole (11) for the bolt rod portion (31) to pass through is provided on the side wall of the fixing seat (1). The fixing seat (1) includes a connecting portion (12). The connecting portion (12) and the fixing seat (1) are fixedly connected or detachably connected.

3. The clamping structure of the air tire vulcanizing machine according to claim 2, characterized in that: The connecting portion (12) is located inside the fixing seat (1), and the connecting portion (12) abuts against the inside of the fixing seat (1).

4. The clamping structure of the air tire vulcanizing machine according to claim 2, characterized in that: The connecting portion (12) is integrally connected to the fixing seat (1).

5. The clamping structure of the air tire vulcanizing machine according to claim 2, characterized in that: The connecting portion (12) can be inserted into the mounting hole (11) from the inner side of the fixing seat (1), and the connecting portion (12) and the mounting hole (11) are plug-fitted.

6. The clamping structure of the air tire vulcanizing machine according to claim 5, characterized in that: The connecting portion (12) and the mounting hole (11) are provided with a limiting structure for limiting the connecting portion (12) from rotating circumferentially along the mounting hole (11).

7. The clamping structure of the air tire vulcanizing machine according to claim 5, characterized in that: The connecting portion (12) is a rotating body, and at least two positioning holes (121) are provided on a side surface of the connecting portion (12) close to the mold (2).

8. The clamping structure of the air tire vulcanizing machine according to claim 7, characterized in that: The connecting portion (12) is in the shape of a frustum, and the top of the frustum of the connecting portion (12) faces the fixing seat (1).

9. The clamping structure of the air tire vulcanizing machine according to any one of claims 1 to 8, characterized in that: The bolt head (32) is an inner hexagonal structure or an outer hexagonal structure.

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