CN217494880U - Mould structure of radial tire - Google Patents
Mould structure of radial tire Download PDFInfo
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- CN217494880U CN217494880U CN202123026064.3U CN202123026064U CN217494880U CN 217494880 U CN217494880 U CN 217494880U CN 202123026064 U CN202123026064 U CN 202123026064U CN 217494880 U CN217494880 U CN 217494880U
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Abstract
The utility model provides a mould structure of radial ply tyre, which comprises an upper mould, a lower mould and a tread mould; when the upper die, the lower die and the tread die are closed, an annular cavity for forming the outer contour of the tire is defined; the upper die and the tread die are provided with an upper parting surface, a lower parting surface is arranged between the lower die and the tread die, the die structure defines a plurality of glue overflowing grooves when die assembly is carried out, the glue overflowing grooves are located at the joint of the upper parting surface and the annular cavity, the glue overflowing grooves are located at the joint of the lower parting surface and the annular cavity, the glue overflowing grooves are communicated with the annular cavity and extend for a distance along the circumferential direction of the annular cavity, and adjacent glue overflowing grooves are spaced for a distance along the circumferential direction of the annular cavity. By applying the technical scheme, the tire can not form a whole circle of excessive glue, and the overhauling equipment can not be entangled during overhauling.
Description
Technical Field
The utility model relates to a radial tire's mould structure.
Background
The radial tire is shaped and vulcanized by a segmented mold, generally comprises a shell and a cavity, wherein the cavity is a mold cavity forming the outer contour of the tire, and an annular mold cavity is formed by a pattern block mold, an upper mold and a lower mold. The shell is a component for driving the cavity to open and close; and is used for completing the production process of heating and vulcanizing the tire. In the tire vulcanization process, along with the increase of the vulcanization times of the mold, gaps exist between the parting surfaces of the pattern block mold and the upper mold and between the parting surfaces of the pattern block mold and the lower mold of the radial tire mold cavity, and during vulcanization, glue overflow is easily generated on the parting surfaces to cause the glue to adhere to the mold, so that production is influenced. In addition, the gap between the parting surfaces of the mold is easily enlarged by the glue flash laminated after multiple production, and the glue flash is inevitably generated in the vulcanized tire. Therefore, the glue overflow groove is usually formed between the parting surfaces of the cavities of the existing radial tire molds. The existing glue overflow groove is generally a full circle glue overflow groove; the rubber overflow formed on the tire after vulcanization is full circle; the whole circle of glue overflow is easy to entangle the maintenance equipment, so that the maintenance operation is inconvenient.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome not enough among the above-mentioned prior art, provide a radial tire's mould structure.
In order to solve the technical problem, the utility model provides a mould structure of radial ply tyre, which comprises an upper mould, a lower mould and a tread mould; when the upper die, the lower die and the tread die are closed, an annular cavity for forming the outer contour of the tire is defined; the mold structure is characterized in that an upper parting surface is arranged between the upper mold and the tread mold, a lower parting surface is arranged between the lower mold and the tread mold, a plurality of glue overflowing grooves are defined when the mold structure is closed, the glue overflowing grooves are located at the joint of the upper parting surface and the annular cavity, the glue overflowing grooves are located at the joint of the lower parting surface and the annular cavity, the glue overflowing grooves are communicated with the annular cavity and extend for a distance along the circumferential direction of the annular cavity, and adjacent glue overflowing grooves are spaced for a distance along the circumferential direction of the annular cavity.
In a better embodiment, the glue overflowing grooves are uniformly arranged at intervals along the circumferential direction of the annular cavity.
In a better embodiment, the extension length of the glue overflow groove along the circumferential direction of the annular cavity is 40 mm-60 mm.
In a better embodiment, the interval distance between the adjacent flash grooves along the circumferential direction of the annular cavity is 3 mm-15 mm.
In a better embodiment, one end of the section of the glue overflow groove on the vertical surface is communicated with the annular cavity, and the other end of the section of the glue overflow groove extends for 4 mm to 10 mm along the axial direction of the annular cavity.
In a better embodiment, the cross section of the glue overflow groove on the vertical surface is 0.4 mm-0.8 mm along the radial direction of the annular cavity.
In a better embodiment, the extension length of the glue overflow groove along the circumferential direction of the annular cavity is 40-60 mm; the spacing distance between adjacent glue overflowing grooves along the circumferential direction of the annular cavity is 3-15 mm; one end of the section of the glue overflow groove on the vertical surface is communicated with the annular cavity, and the other end of the section of the glue overflow groove extends for 4-10 mm along the axial direction of the annular cavity; the section of the glue overflow groove on the vertical surface has a size of 0.4 mm-0.8 mm along the radial direction of the annular cavity.
In a preferred embodiment, the upper mold comprises an upper mold clamping surface, the lower mold comprises a lower mold clamping surface, and the tread mold comprises a mold clamping surface, wherein the upper mold clamping surface and the lower mold clamping surface can be respectively clamped with the mold clamping surfaces to form a first parting surface and a second parting surface; the upper die closing surface and the lower die closing surface respectively comprise a plurality of concave grooves, and one sides of the concave grooves are communicated with the annular cavity; the groove and the joint surface define a glue overflow groove together; the position of the tread die close to the joint surface also comprises a bulge extending along the circumferential direction of the annular cavity.
In a more preferred embodiment, the protrusion height of the protrusion is 0.5 mm to 1.2 mm.
In a preferred embodiment, the upper mold comprises an upper mold clamping surface, the lower mold comprises a lower mold clamping surface, and the tread mold comprises a mold clamping surface, wherein the upper mold clamping surface and the lower mold clamping surface can be respectively clamped with the mold clamping surfaces to form a first parting surface and a second parting surface; the die joint surface comprises a plurality of concave grooves, and one sides of the grooves are communicated with the annular cavity; the groove, the upper die closing surface and the lower die closing surface define a glue overflow groove together.
Compared with the prior art, the technical scheme of the utility model possess following beneficial effect:
a mould structure of radial tyre comprises an upper mould, a lower mould and a tread mould; when the upper die, the lower die and the tread die are closed, an annular cavity for forming the outer contour of the tire is defined; the upper die and the tread die are provided with an upper parting surface, a lower parting surface is arranged between the lower die and the tread die, the die structure defines a plurality of glue overflowing grooves when die assembly is carried out, the glue overflowing grooves are located at the joint of the upper parting surface and the annular cavity, the glue overflowing grooves are located at the joint of the lower parting surface and the annular cavity, the glue overflowing grooves are communicated with the annular cavity and extend for a distance along the circumferential direction of the annular cavity, and adjacent glue overflowing grooves are spaced for a distance along the circumferential direction of the annular cavity. When the tire is molded, molding raw materials can enter the glue overflowing grooves and form glue overflowing blocks distributed along the circumferential direction on the tire, and the glue overflowing grooves are spaced, so that glue overflowing of the whole circle can not be formed, and overhauling equipment can not be entangled during overhauling.
Drawings
Fig. 1 is a cross-sectional view along a vertical plane when an upper die, a lower die and a tread die of a die structure according to a preferred embodiment of the present invention are closed;
FIG. 2 is a schematic plan view of the lower mold clamping surface of the lower mold in the preferred embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 1;
fig. 4 is a schematic view of the groove on the tread mold according to the preferred embodiment of the present invention.
Detailed Description
The invention is further described with reference to the drawings and the detailed description.
The orientation of the tire is first defined: c.l. represents the tire center plane; near the tire center plane c.l. represents the inner side and far from the tire center plane c.l. represents the outer side; the horizontal direction is the lateral direction and represents the radial direction of the tire, the vertical direction is the longitudinal direction and represents the axial direction of the tire, and the vertical paper surface direction represents the circumferential direction of the tire.
The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
A mold structure of a radial tire includes an upper mold 1, a lower mold 2, and a tread mold 3. Referring to fig. 1, a cross-sectional view along a vertical plane when an upper mold 1, a lower mold 2 and a tread mold 3 of a mold structure are clamped is shown, and only a right-side structure of the mold structure is shown in fig. 1. The upper die 1 comprises an upper forming surface 11 positioned on the lower side of the upper die, the lower die 2 comprises a lower forming surface 21 positioned on the upper side of the lower die, the tread die 3 comprises a pattern forming surface 31 positioned on the left side of the tread die, and the upper die 1, the lower die 2 and the tread die 3 define an annular cavity for forming the outer contour of the tire when being closed, the annular cavity can receive forming raw materials (rubber layers and the like) of the tire, and the forming raw materials can be vulcanized and the like in the annular cavity.
Referring to fig. 1, the upper mold 1 includes an upper mold clamping surface 12 located on a radial outer side of the upper mold 1, the lower mold 2 includes a lower mold clamping surface 22 located on a radial outer side of the lower mold, the tread mold 3 includes a mold clamping surface 32 located on a radial inner side of the tread mold, when the upper mold 1 and the lower mold 2 are respectively clamped with the tread mold 3, an upper parting surface 6 is formed between the upper mold 1 and the tread mold 3, a lower parting surface 7 is formed between the lower mold 2 and the tread mold 3, the mold structure defines a plurality of glue overflow grooves 4 during mold clamping, the glue overflow grooves 4 are located at a joint of the upper parting surface 6 and an annular cavity, the glue overflow grooves 4 are located at a joint of the lower parting surface 7 and the annular cavity, the glue overflow grooves 4 communicate with the annular cavity and extend for a distance along a circumferential direction of the annular cavity, and adjacent glue overflow grooves 4 are spaced for a distance along the circumferential direction of the annular cavity. When the tire is molded, the molding raw materials can enter the glue overflowing grooves 4 and form glue overflowing blocks distributed along the circumferential direction on the tire, and the glue overflowing grooves 4 are spaced, so that the whole circle of glue overflowing cannot be formed, and the maintenance equipment cannot be entangled during maintenance. In the present embodiment, the glue overflow slots 4 are uniformly spaced along the circumferential direction of the annular cavity.
In this embodiment, referring to fig. 2 to 3, the upper mold clamping surface 12 and the lower mold clamping surface 22 respectively include a plurality of concave grooves 5, and one side of each groove 5 communicates with the annular cavity; the groove 5 and the die joint surface 32 define a glue overflow groove 4 together; the tread mold 3 further includes a protrusion 33 extending in the circumferential direction of the annular cavity at a position close to the mating surface 32. The protrusions 33 can buffer the flow of the molding material to facilitate the molding material to flow into the glue overflow groove 4. In this embodiment, the protrusion height D of the protrusion 33 is 0.5 mm-1.2 mm to avoid the problem of scratching the tire too high to generate more flash or too low to buffer the flow of the molding material. Referring to fig. 4, in some simple alternatives, the mating surface 32 includes a plurality of concave grooves 5, one side of the grooves 5 communicating with the annular cavity; the groove 5, the upper die surface 12 and the lower die surface 22 define an overflow slot 4. At this time, the projection 33 may not be provided.
In an embodiment, referring to fig. 2, the layout of the grooves 5 on the lower molding surface 22 is shown. The extension length W of the glue overflow groove 4 along the circumferential direction of the annular cavity is 40-60 mm. The interval distance N between the adjacent glue overflowing grooves 4 along the circumferential direction of the annular cavity is 3-15 mm. If the spacing distance N is too small, the excessive glue penetrates into the spacing area between two adjacent glue overflow grooves 4 during vulcanization to cause the risk of glue overflow in the whole circle, and further the overhauling operation is influenced. The same time interval N is too small, the stress of the vulcanization time interval area is larger, and the mold is easy to damage and deform. On the contrary, if the spacing distance N is too large, the glue storage amount of the glue overflow groove 4 is insufficient, and the tyre glue overflow edge is easy to form an uneven shape, which also affects the maintenance operation of the tyre glue overflow.
In the present embodiment, referring to fig. 3, a cross-sectional view of the glue overflow groove 4 in a vertical plane is shown. One end of the section of the glue overflow groove 4 on the vertical surface is communicated with the annular cavity, and the axial extension distance L of the other end of the glue overflow groove along the annular cavity is 4-10 mm. The section of the glue overflow groove 4 on the vertical surface has a dimension T of 0.4 mm-0.8 mm along the radial direction of the annular cavity. In the production process, the molding raw materials are molded in the annular cavity, the rubber material overflows to the rubber overflow groove 4 to form rubber overflow blocks on the tire, and the rubber overflow blocks are distributed at intervals.
The above, only be the preferred embodiment of the present invention, but the design concept of the present invention is not limited to this, and any skilled person familiar with the technical field is in the technical scope disclosed in the present invention, and it is right to utilize this concept to perform insubstantial changes to the present invention, all belong to the act of infringing the protection scope of the present invention.
Claims (10)
1. A mould structure of radial tyre is characterized in that the mould structure comprises an upper mould, a lower mould and a tread mould; when the upper die, the lower die and the tread die are closed, an annular cavity for forming the outer contour of the tire is defined; the upper die and the tread die are provided with an upper parting surface, a lower parting surface is arranged between the lower die and the tread die, the die structure defines a plurality of glue overflowing grooves when die assembly is carried out, the glue overflowing grooves are located at the joint of the upper parting surface and the annular cavity, the glue overflowing grooves are located at the joint of the lower parting surface and the annular cavity, the glue overflowing grooves are communicated with the annular cavity and extend for a distance along the circumferential direction of the annular cavity, and adjacent glue overflowing grooves are spaced for a distance along the circumferential direction of the annular cavity.
2. The radial tire mold structure according to claim 1, wherein: the glue overflowing grooves are uniformly arranged along the circumferential direction of the annular cavity at intervals.
3. The mold structure of a radial tire according to claim 1, wherein: the extension length of the glue overflow groove along the circumferential direction of the annular cavity is 40-60 mm.
4. The mold structure of a radial tire according to claim 1, wherein: the interval distance between the adjacent glue overflowing grooves along the circumferential direction of the annular cavity is 3-15 mm.
5. The mold structure of a radial tire according to claim 1, wherein: one end of the section of the glue overflow groove on the vertical surface is communicated with the annular cavity, and the other end of the section of the glue overflow groove extends for 4-10 mm along the axial direction of the annular cavity.
6. The mold structure of a radial tire according to claim 1, wherein: the section of the glue overflow groove on the vertical surface is 0.4 mm-0.8 mm along the radial dimension of the annular cavity.
7. The mold structure of a radial tire according to claim 1, wherein: the extension length of the glue overflow groove along the circumferential direction of the annular cavity is 40-60 mm; the spacing distance between adjacent glue overflowing grooves along the circumferential direction of the annular cavity is 3-15 mm; one end of the section of the glue overflow groove on the vertical surface is communicated with the annular cavity, and the other end of the section of the glue overflow groove extends for 4-10 mm along the axial direction of the annular cavity; the section of the glue overflow groove on the vertical surface has a size of 0.4 mm-0.8 mm along the radial direction of the annular cavity.
8. The radial tire mold structure according to claim 1, wherein: the upper die comprises an upper die joint surface, the lower die comprises a lower die joint surface, the tread die comprises a die joint surface, and the upper die joint surface and the lower die joint surface can be respectively matched with the die joint surface of the tread die to form a first parting surface and a second parting surface; the upper die closing surface and the lower die closing surface respectively comprise a plurality of concave grooves, and one sides of the concave grooves are communicated with the annular cavity; the groove and the die assembly surface together define a glue overflow groove; the position of the tread die close to the joint surface also comprises a bulge extending along the circumferential direction of the annular cavity.
9. The radial tire mold structure according to claim 8, wherein: the height of the projection is 0.5 mm-1.2 mm.
10. The mold structure of a radial tire according to claim 1, wherein: the upper die comprises an upper die joint surface, the lower die comprises a lower die joint surface, the tread die comprises a die joint surface, and the upper die joint surface and the lower die joint surface can be respectively matched with the die joint surface of the tread die to form a first parting surface and a second parting surface; the die joint surface comprises a plurality of concave grooves, and one sides of the grooves are communicated with the annular cavity; the groove, the upper die closing surface and the lower die closing surface define a glue overflow groove together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123026064.3U CN217494880U (en) | 2021-12-03 | 2021-12-03 | Mould structure of radial tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123026064.3U CN217494880U (en) | 2021-12-03 | 2021-12-03 | Mould structure of radial tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217494880U true CN217494880U (en) | 2022-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123026064.3U Active CN217494880U (en) | 2021-12-03 | 2021-12-03 | Mould structure of radial tire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217494880U (en) |
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2021
- 2021-12-03 CN CN202123026064.3U patent/CN217494880U/en active Active
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