Snow nail structure and tire mold

Abstract

The utility model provides a snow nail structure and a tire mold, which belong to the technical field of rubber vulcanization, and comprise a snow nail, a bushing and a thread bushing, the threaded sleeve is provided with an inner hole, and the snow nail is installed in the inner hole of the threaded sleeve. The bushing is arranged on the outer side of the snow nail in a sleeving manner, is arranged in an inner hole of the threaded sleeve, is in threaded connection with the threaded sleeve, and is suitable for pressing the snow nail at one end of the threaded sleeve so as to limit the snow nail from being separated from one end of the threaded sleeve, and the snow nail is mounted in a tire mold from a mold cavity surface. And the snow nail can be conveniently and quickly detached from the cavity surface.

Description

Technical Field

[0001] The utility model belongs to the technical field of rubber vulcanization, and particularly relates to a snow spike structure and a tire mold. Background Art

[0002] Currently, there are three main ways to connect snow spikes to tire molds: casting fixation, front thread fixation, and back screw fixation.

[0003] Cast-in snow spikes are difficult to remove but cannot be replaced. Front-threaded snow spikes can be replaced, but during the tire vulcanization process, the rubber exerts a certain force on the spikes, causing them to rotate and fall out. While gluing can solve the problem of easy fallout, it also brings problems such as difficulty in removing the spikes and glue spillage during vulcanization that can contaminate the tire. Back-screwed snow spikes ensure stability and can be replaced, but replacement requires the mold to be removed from the machine, making the process cumbersome.

[0004] In view of the above problems in the prior art, a snow spike structure that can be quickly replaced and prevented from falling off is provided to overcome the above defects. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a snow nail structure, comprising: a snow nail, a bushing, and a threaded sleeve;

[0006] The threaded sleeve has an inner hole, and the snow spike is installed in the inner hole of the threaded sleeve;

[0007] The bushing is sleeved on the outside of the snow nail, and the bushing is arranged in the inner hole of the threaded sleeve and is threadedly connected to the threaded sleeve, suitable for pressing the snow nail onto one end of the threaded sleeve to limit the snow nail from detaching from one end of the threaded sleeve.

[0008] Furthermore, the snow spike comprises a handle, a neck, and a locking portion connected in sequence;

[0009] The handle comprises a first end surface away from the neck, and the handle is suitable for being inserted into the tire from one side of the first end surface to form a hole groove structure on the tire;

[0010] The locking portion includes a second end surface away from the neck, and the second end surface is a plane;

[0011] The locking portion further includes a locking column connected to the second end surface;

[0012] The locking portion further comprises a locking cone, which is a vertebral body that tapers from the locking column to the neck of the locking portion.

[0013] Furthermore, the bushing includes a supporting hole and a locking hole;

[0014] The supporting hole is a through hole, the diameter of which is larger than the diameter of the neck of the snow spike and smaller than the diameter of the locking column, and is suitable for being sleeved on the outer side of the neck of the snow spike from the first end face toward the second end face of the snow spike;

[0015] And / or, the locking hole is a conical hole adapted to the locking cone of the snow spike.

[0016] Furthermore, the diameter of the support hole is 0.02 to 0.06 mm larger than the diameter of the neck of the snow spike.

[0017] Furthermore, a groove is provided on the end surface of the bushing away from the locking hole.

[0018] Furthermore, the groove is radially arranged to connect the support hole and the outer circle of the bushing, multiple grooves are arranged at intervals around the circumference, and at least two grooves are evenly distributed around the circumference, or the groove is a regular polygonal shape concentric with the support hole of the bushing.

[0019] Furthermore, the threaded sleeve has an internal thread, and the bushing has an external thread matching the internal thread, and the two are suitable for threaded connection.

[0020] Furthermore, the outer circle of the threaded sleeve has external threads.

[0021] The utility model also provides a tire mold, including a tread block and the snow spike structure described in the above embodiment, wherein the cavity surface of the tread block is provided with a hole groove adapted to the threaded sleeve, and the threaded sleeve is fixed in the hole groove of the tread block.

[0022] One end of the threaded sleeve exposed from the pattern block is flush with the cavity surface of the pattern block;

[0023] And / or, after the bushing is connected to the threaded sleeve, one end of the bushing exposed from the threaded sleeve is flush with one end of the threaded sleeve exposed from the tread block, the second end face of the locking portion of the snow spike is adapted to abut against the bottom of the hole groove of the tread block, the gap between the locking hole and the locking cone of the snow spike is 0.01 to 0.03 mm, and the locking portion of the snow spike is fixed in the space formed by the tread block and the bushing.

[0024] The threaded sleeve is cast in the hole groove of the pattern block.

[0025] The technical solution provided by the utility model has the following advantages compared with the prior art:

[0026] The utility model provides a snow spike structure, wherein a threaded sleeve is installed in a tire mold, a snow spike is installed in the threaded sleeve, a bushing is arranged in the threaded sleeve and is threadedly connected to the threaded sleeve, and is suitable for pressing the snow spike into the threaded sleeve, so that the snow spike can be quickly removed from the cavity surface.

[0027] On the other hand, when the second end face of the snow spike abuts against the bottom of the hole groove of the pattern block, there is a gap between the locking cone and the locking hole of the bushing, and there is also a gap between the neck of the snow spike and the support hole of the bushing. The snow spike can rotate in the space between the bushing and the pattern block, which solves the problem of snow spike bending to a certain extent, reduces mold abnormality problems, and thus improves the work efficiency of the tire factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 This is a cross-sectional view of the snow spike structure of the utility model installed in a tire mold;

[0030] Figure 2 It is a cross-sectional view of the snow spike of the utility model;

[0031] Figure 3 It is a cross-sectional view of the bushing of the utility model;

[0032] Figure 4 yes Figure 3 Right side view of the middle bushing;

[0033] Figure 5 It is a cross-sectional view of the threaded sleeve of the utility model.

[0034] Description of reference numerals:

[0035] 1-snow nail, 11-handle, 12-neck, 13-locking part, 131-locking cone, 132-second end surface, 133-locking column;

[0036] 2-bushing, 21-support hole, 22-locking hole, 23-external thread, 24-groove;

[0037] 3-thread sleeve, 31-internal thread;

[0038] 4-Pattern blocks. DETAILED DESCRIPTION

[0039] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0041] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0042] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0043] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0044] Please refer to Figure 1-Figure 5 In order to solve the above technical problems, the utility model provides a snow nail structure, including: a snow nail 1, a bushing 2, and a threaded sleeve 3; the threaded sleeve 3 has an inner hole, and the snow nail 1 is installed in the inner hole of the threaded sleeve 3; the bushing 2 is sleeved on the outside of the snow nail 1, and the bushing 2 is arranged in the inner hole of the threaded sleeve 3, and is threadedly connected with the threaded sleeve 3, so that the snow nail 1 is pressed into the threaded sleeve 3 to limit the snow nail 1 from being separated from one end of the threaded sleeve 3. The snow nail 1 is installed in the threaded sleeve 3 from the cavity surface of the tire mold, and the snow nail is fixed in the threaded sleeve by the bushing 2 from the cavity surface, so that it is easy to be removed from the cavity surface.

[0045] Specifically, the snow spike 1 includes a handle 11, a neck 12, and a locking portion 13 connected in sequence. The handle 11 includes a first end face away from the neck 12. The handle 11 is inserted into the tire from one side of the first end face to form a hole groove structure on the tire. The snow spike on the tire is fixed in the hole groove structure to prevent the vehicle from slipping.

[0046] The locking portion 13 includes a second end face 132 away from the neck 12, and the second end face 132 is a plane; the locking portion 13 also includes a locking column 133 connected to the second end face 132; the locking portion 13 also includes a locking cone 131, which is a cone that gradually tapers from the locking column 133 of the locking portion 13 to the neck 12.

[0047] The bushing 2 includes a supporting hole 21 and a locking hole 22; the supporting hole 21 is a through hole, and the diameter of the supporting hole 21 is larger than the diameter of the neck 12 of the snow nail 1. During the vulcanization process, the tire drives the snow nail 1 to rotate in the bushing 2. The diameter of the supporting hole 21 is smaller than the diameter of the locking column 133, and is suitable for being sleeved on the outside of the neck 12 of the snow nail 1 from the first end face of the snow nail 1 toward the second end face 132 to prevent the snow nail 1 from falling out of the supporting hole 21; the locking hole 22 is preferably a conical hole adapted to the locking cone 131 of the snow nail 1.

[0048] Specifically, the diameter of the support hole 21 is 0.02 to 0.06 mm larger than the diameter of the neck 12 of the snow spike 1 , so that the snow spike 1 can rotate in the bushing 2 without being significantly deviated from its position.

[0049] A groove 24 is provided on the end surface of the bushing 2 away from the locking hole 22. The groove 24 can be arranged radially, connecting the support hole 21 and the outer circle of the bushing 2. Multiple grooves 24 are arranged at intervals around the circumference, and multiple grooves 24 are evenly distributed in the circumferential direction, for example, two grooves are evenly distributed around the circumference. A wrench with two protrusions can be used to fit into the groove 24 to screw the bushing 2 into or out of the threaded sleeve 3; or the groove 24 can be a regular polygon concentric with the support hole 21 of the bushing 2, and a corresponding regular polygon hollow wrench can be used for disassembly and assembly.

[0050] The threaded sleeve 3 has an internal thread 31 and the bushing 2 has an external thread 23 matching the internal thread 31 , and the two are suitable for threaded connection.

[0051] The utility model also provides a tire mold, including a tread block 4 and a snow spike structure as described in the above embodiment. The cavity surface of the tread block 4 is provided with a hole groove adapted to the threaded sleeve 3, and the threaded sleeve 3 is fixed in the hole groove of the tread block 4.

[0052] Furthermore, one end of the threaded sleeve 3 exposed from the tread block 4 is flush with the cavity surface of the tread block 4. After the bushing 2 is connected to the threaded sleeve 3, the one end of the bushing 2 exposed from the threaded sleeve 3 is flush with the one end of the threaded sleeve 3 exposed from the tread block 4. After the bushing 2, the threaded sleeve 3 and the cavity surfaces of the tread block 4 are flush, no trace will be formed on the surface of the tire after vulcanization. During vulcanization, the snow spike 1 is inserted into the tire, and the second end face 132 of the locking portion 13 of the snow spike 1 is driven to abut against the bottom of the hole groove of the tread block 4. The gap between the locking hole 22 and the locking cone 131 of the snow spike 1 is 0.01 to 0.03 mm. The locking portion 13 of the snow spike 1 is fixed in the space formed by the tread block 4 and the bushing 2. The snow spike will not fall out of the secondary space, and due to the existence of the gap, the snow spike can rotate under the action of the tire.

[0053] The outer circle of the threaded sleeve 3 has an external thread, which can be threadedly connected to the pattern block. The threaded connection method is flexible in assembly and disassembly, or the threaded sleeve 3 is cast in the hole groove of the pattern block 4. The casting method is reliable and not easy to fall off.

[0054] The above are merely specific embodiments of the present disclosure, intended to enable those skilled in the art to understand and implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not limited to these embodiments, but is to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

Claims

1. A snow nail structure, characterized in that: include: Snow spike (1), bushing (2), threaded sleeve (3); The threaded sleeve (3) has an inner hole, and the snow spike (1) is installed in the inner hole of the threaded sleeve (3); The bushing (2) is sleeved on the outside of the snow spike (1), and the bushing (2) is arranged in the inner hole of the threaded sleeve (3) and is threadedly connected to the threaded sleeve (3), and is suitable for pressing the snow spike (1) onto one end of the threaded sleeve (3) to limit the snow spike (1) from being separated from one end of the threaded sleeve (3).

2. The snow nail structure according to claim 1, characterized in that: The snow spike (1) comprises a handle (11), a neck (12), and a locking portion (13) which are connected in sequence; The handle (11) comprises a first end surface away from the neck (12), and the handle (11) is suitable for being inserted into a tire from one side of the first end surface to form a hole groove structure on the tire; The locking portion (13) includes a second end surface (132) away from the neck (12), and the second end surface (132) is a plane; The locking portion (13) further includes a locking column (133) connected to the second end surface (132); The locking portion (13) further comprises a locking cone (131), and the locking cone (131) is a cone that tapers from the locking column (133) of the locking portion (13) to the neck (12).

3. The snow nail structure according to claim 2, characterized in that: The bushing (2) comprises a supporting hole (21) and a locking hole (22); The supporting hole (21) is a through hole, the diameter of the supporting hole (21) is larger than the diameter of the neck (12) of the snow nail (1), and the diameter of the supporting hole (21) is smaller than the diameter of the locking column (133), and is suitable for being sleeved on the outside of the neck (12) of the snow nail (1) from the first end face toward the second end face (132) of the snow nail (1); And / or, the locking hole (22) is a conical hole adapted to the locking cone (131) of the snow spike (1).

4. The snow nail structure according to claim 3, characterized in that: The diameter of the support hole (21) is 0.02 to 0.06 mm larger than the diameter of the neck (12) of the snow spike (1).

5. The snow nail structure according to claim 3, characterized in that: The end surface of the bushing (2) away from the locking hole (22) is provided with a groove (24).

6. The snow nail structure according to claim 5, characterized in that: The groove (24) is radially arranged to connect the support hole (21) and the outer circle of the bushing (2), and multiple grooves (24) are arranged at intervals on the circumference, with at least two grooves evenly distributed on the circumference, or the groove (24) is in the shape of a regular polygon concentric with the support hole (21) of the bushing (2).

7. The snow nail structure according to claim 1, characterized in that: The threaded sleeve (3) has an internal thread (31), and the bushing (2) has an external thread (23) matching the internal thread, and the two are suitable for threaded connection.

8. A tire mold, characterized in that: The invention comprises a tread block (4) and a snow spike structure according to any one of claims 1 to 7, wherein the cavity surface of the tread block (4) is provided with a hole groove adapted to the threaded sleeve (3), and the threaded sleeve (3) is fixed in the hole groove of the tread block (4).

9. The tire mold according to claim 8, characterized in that: One end of the threaded sleeve (3) exposed from the pattern block (4) is flush with the cavity surface of the pattern block (4); And / or, after the bushing (2) is connected to the threaded sleeve (3), one end of the bushing (2) exposed from the threaded sleeve (3) is flush with one end of the threaded sleeve (3) exposed from the tread block (4); the second end face (132) of the locking portion (13) of the snow spike (1) is adapted to abut against the bottom of the hole groove of the tread block (4); a gap between the locking hole (22) and the locking cone (131) of the snow spike (1) is 0.01 to 0.03 mm; and the locking portion (13) of the snow spike (1) is fixed in a space formed between the tread block (4) and the bushing (2).

10. The tire mold according to claim 8, characterized in that The threaded sleeve (3) is cast in the hole groove of the pattern block (4).

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