CN212472104U - Tire mold - Google Patents
Tire mold Download PDFInfo
- Publication number
- CN212472104U CN212472104U CN202022693114.2U CN202022693114U CN212472104U CN 212472104 U CN212472104 U CN 212472104U CN 202022693114 U CN202022693114 U CN 202022693114U CN 212472104 U CN212472104 U CN 212472104U
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- heating chamber
- guide ring
- partition plate
- heat
- mold
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- 238000010438 heat treatment Methods 0.000 claims abstract description 101
- 238000004321 preservation Methods 0.000 claims abstract description 17
- 238000005192 partition Methods 0.000 claims description 44
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 8
- 239000012774 insulation material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a tire mold, which comprises a mold shell and a mold cavity, wherein the mold shell is arranged outside the mold cavity, the mold shell comprises a base, an upper cover and a guide ring, a heating chamber is arranged in the guide ring, the heating chamber comprises a first heating chamber and a second heating chamber which are mutually communicated, a through hole is arranged between the first heating chamber and the second heating chamber, a heat preservation layer is arranged outside the guide ring, and the heating chamber is coated by the heat preservation layer; the thickness of the insulating layer far away from the opening end part of the mold is larger than that of the insulating layer near the opening end part of the mold; the outer side part of the guide ring is arranged in a step shape, and the inner side of the heat-insulating layer is arranged in a step shape matched with the outer side of the guide ring; the utility model can reduce heat loss and ensure the temperature of the upper and lower ends of the mould to be consistent; the surface pressure intensity of the upper and lower caliber positions of the pattern block in the die can be reduced, and the service life of the die is prolonged; the uniformity of the heating temperature of the mold can be improved.
Description
Technical Field
The utility model relates to a tire mold belongs to tire curing equipment technical field.
Background
The tyre mold is key equipment for tyre vulcanization production, and comprises a mold shell and a mold cavity, wherein the mold shell mainly comprises a guide ring, a sliding block, an upper cover, a base and the like, and the mold cavity mainly comprises a pattern block, an upper side plate and a lower side plate. The guide ring is a part mainly bearing pressure and heat transfer, bears the mold clamping force from a vulcanizing machine and further transfers the force to the pattern blocks and the upper and lower side plates. A circulating steam flow channel is generally arranged in the guide ring to heat the guide ring and further transfer heat to the cavity and the green tire, and a heat insulation material is arranged outside the guide ring to reduce heat loss.
The existing tire mold, for example, chinese patent CN205997232U, has several problems in the actual production process:
1. the guide ring outside does not have the heat preservation or partial heat preservation cover designs into and leaves the space with the guide ring excircle contactless, and the heat is lost seriously through circulation of air, radiation scheduling problem, and energy utilization is low, leads to behind steam gets into the mould from the upper end, and the low and steam difference in temperature in the mould outside is big, and the heat gives off more to the mould outside, when the circulation arrives the second heating chamber, and steam temperature has been less than first heating chamber, has the difference in temperature about transferring to the decorative pattern piece back decorative pattern piece.
2. The thickness of the upper part of the mold is far larger than that of the lower part, after a certain force is exerted on the upper end, the deformation of the upper end is small, the deformation of the lower end is large, the upper pressure intensity of the pattern blocks, which is in contact with the side plates, is easily larger than that of the lower part, and the mold is easily damaged.
3. There is the clearance between base and the guide ring, and the air that contacts the mould is heated and is produced the circulation with external cold air, and the heat scatters and disappears to the mould outside, produces the energy waste.
4. The difference between the heat transfer area of the upper steam chamber and the lower steam chamber is too large, and the condition of uneven heat distribution is further aggravated.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a tire mold which can reduce heat loss and ensure the temperature of the upper end and the lower end of the mold to be consistent; the surface pressure intensity of the upper and lower caliber positions of the pattern block in the die can be reduced, and the service life of the die is prolonged; the uniformity of the heating temperature of the mold can be improved.
For solving the technical problem, the utility model discloses a following technical scheme: a tire mold comprises a mold shell and a mold cavity, wherein the mold shell is arranged outside the mold cavity and comprises a base, an upper cover and a guide ring, a heating chamber is arranged in the guide ring and comprises a first heating chamber and a second heating chamber which are communicated with each other, a through hole is formed between the first heating chamber and the second heating chamber, a heat insulation layer is arranged on the outer side of the guide ring, and the heating chamber is coated by the heat insulation layer; the outer side part of the guide ring is arranged in a step shape, and the inner side of the heat-insulating layer is arranged in a step shape matched with the outer side of the guide ring;
the thickness of the insulating layer far away from the opening end part of the die is larger than that of the insulating layer near the opening end part of the die.
Furthermore, a first step is arranged at the lower end of the guide ring, and a second step matched with the first step is arranged on the base; the first step and the second step are arranged in a staggered mode.
Furthermore, a heating medium inlet is arranged on the first heating chamber, and a heating medium outlet is arranged on the second heating chamber; the first heating chamber is located at the end portion of the guide ring away from the die opening, and the second heating chamber is located at the end portion of the guide ring close to the die opening.
Furthermore, a step is arranged on the outer side of the guide ring, and a step matched with the step of the guide ring is arranged on the inner side of the heat insulation layer.
Furthermore, the outer side of the heat-insulating layer is wrapped with a panel, and the peripheral surface of the panel is a cylindrical surface.
Furthermore, a first partition plate is arranged in the first heating chamber, and a second partition plate is arranged in the second heating chamber;
the first partition plate and the second partition plate are arranged in a staggered mode in the circumferential direction; two ports of the through hole are arranged in the interval in which the first partition plate and the second partition plate are staggered in the circumferential direction, the heating medium inlet is positioned on the other side of the first partition plate opposite to the through hole, and the heating medium outlet is positioned on the other side of the second partition plate opposite to the through hole;
or the first partition plate and the second partition plate are circumferentially aligned, the through holes are formed in one side of the first partition plate and one side of the second partition plate, and the heating medium inlet and the heating medium outlet are formed in the other side, opposite to the through holes, of the first partition plate and the second partition plate.
Furthermore, a first fixed step is arranged at the upper part of the guide ring, and the upper end surface of the heat-insulating layer is flush with the first fixed step; the upper ring is arranged on the upper end face of the heat preservation layer, the upper ring and the heat preservation layer form a stepped structure, and the stepped structure is matched with the first fixed step.
Furthermore, an outer circle step is arranged between the first heating chamber and the second heating chamber on the guide ring and matched with the step on the inner side of the heat insulation layer.
Furthermore, a second fixed step is arranged on one side, close to the opening end of the mold, of a second heating chamber on the guide ring, and the lower end of the heat-insulating layer is supported on the outer second fixed step.
Further, the ratio of the heat transfer area of the first heating chamber to the heat transfer area of the second heating chamber is 0.7-1.3.
The utility model adopts the above technical scheme after, compare with prior art, have following advantage:
the thickness of the part, far away from the opening end of the mould, of the heat-insulating layer is larger than the thickness of the part, close to the opening end of the mould, of the heat-insulating layer, so that the heat loss of the upper end of the mould can be reduced except the heat transferred to the tire blank through the mould, the temperature of the heating medium circulating to the lower end of the mould is improved, and the temperature of the heating medium is ensured to be consistent to the upper end and the; and the heat insulation material is directly contacted with the appearance of the guide ring, so that heat loss is reduced.
The utility model discloses the step design in the guide ring outside makes guide ring upper portion intensity unanimous basically with the lower part, makes its upper and lower extreme warp unanimous basically, guarantees that the effort difference value of applying from top to bottom to the decorative pattern piece reduces, reduces the surface pressure of bore position about the decorative pattern piece, extension mould life.
The utility model discloses the design has the step of mutually supporting between base and the guide ring, reduces the circulation each other of air and outside cold air in the mould, makes guide ring and the loss of slider lower extreme heat reduce, improves mould lower extreme temperature.
The utility model discloses the heat transfer area disparity of well first heating chamber and second heating chamber reduces, guarantees that the temperature difference is within the certain limit about the mould, guarantees temperature uniformity.
The heating chamber of the utility model is divided into an upper part and a lower part, after the steam enters a cycle from the first heating chamber, the steam enters the second heating chamber through the through hole, and the steam circulates a cycle again along the direction opposite to the air inlet direction, thereby ensuring that the steam heat heats the die sufficiently; the steam circulates in the mould for 2 weeks, so that the heating efficiency is higher and the temperature is more uniform.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a partial cross-sectional view of the present invention;
in the figure, the position of the upper end of the main shaft,
1-base, 2-upper cover, 3-guide ring, 4-arch base, 5-pattern block, 6-upper side plate, 7-lower side plate, 8-first heating chamber, 9-second heating chamber, 10-insulating layer, 11-upper ring, 12-panel, 13-fixing screw, 14-through hole, 15-first step, 16-second step, 17-heating medium inlet, 18-heating medium outlet, 19-first partition plate, 20-second partition plate, 21-first fixing step, 22-excircle step and 23-second fixing step.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
Example 1
As shown in fig. 1-2, the utility model provides a tire mold, which comprises a mold shell and a mold cavity, wherein the mold shell is arranged outside the mold cavity, the mold shell comprises a base 1, an upper cover 2, a guide ring 3 and a plurality of arch seats 4, and the mold cavity comprises an upper side plate 5, a lower side plate 6 and a plurality of pattern blocks 7; the plurality of pattern blocks 7 enclose the circumferential shape of the tire; the upper side plate 5 and the lower side plate 6 are both annular, and the upper side plate 5 and the lower side plate 6 respectively form the side appearance of the tire; the upper side plate 5 is arranged on the lower side surface of the upper cover 2, and the lower side plate 6 is arranged on the upper side surface of the base 1; the pattern blocks 7 are arranged inside the arch-shaped seat 4, and the arch-shaped seat 4 is connected inside the guide ring 3 in a sliding way.
The guide ring 3 is internally provided with a heating chamber which is divided into an upper part and a lower part which are communicated with each other and respectively provided with a first heating chamber 8 and a second heating chamber 9, the first heating chamber 8 is positioned at the end part of the guide ring 3 far away from the opening of the die, and the second heating chamber 9 is positioned at the end part of the guide ring 3 close to the opening of the die.
The ratio of the heat transfer area of the first heating chamber 8 to the heat transfer area of the second heating chamber 9 is 0.7 to 1.3, more preferably 0.8 to 1.2.
A through hole 14 is arranged between the first heating chamber 8 and the second heating chamber 9; the first heating chamber 8 is provided with a heating medium inlet 17, and the second heating chamber 9 is provided with a heating medium outlet 18.
A first partition plate 19 is arranged in the first heating chamber 8, and a second partition plate 20 is arranged in the second heating chamber 9; the first partition plate 19 and the second partition plate 20 are arranged in a staggered mode in the circumferential direction; two ports of the through hole 14 are arranged in a circumferentially staggered interval between a first partition plate 19 and a second partition plate 20, the heating medium inlet 17 is positioned on the other side of the first partition plate 19 opposite to the through hole 14, and the heating medium outlet 18 is positioned on the other side of the second partition plate 20 opposite to the through hole 14; alternatively, the first partition plate 19 and the second partition plate 20 are circumferentially aligned, the through hole 14 is located on one side of the first partition plate 19 and the second partition plate 20, and the heating medium inlet 17 and the heating medium outlet 18 are located on the other side of the first partition plate 19 and the second partition plate 20 opposite to the through hole 14.
The outer side of the guide ring 3 is arranged in a step shape, specifically, a step is arranged at the outer side part of the guide ring 3, and the steps of the guide ring 3 are 3-4.
The outer side of the guide ring 3 is provided with a heat insulation assembly, and the heat insulation assembly comprises a heat insulation layer 10 made of heat insulation materials and a panel 12 coated on the outer side of the heat insulation layer 10; the peripheral surface of the panel 12 is a cylindrical surface; the heat preservation layer 10 covers the heating chamber, the inner side of the heat preservation layer 10 is provided with a step shape matched with the guide ring 3, specifically, the inner side of the heat preservation layer 10 is provided with a step matched with the step on the outer side of the guide ring 3, and the thickness of the heat preservation layer 10 far away from the opening end part of the mold is larger than that of the heat preservation layer 10 close to the opening end part of the mold.
A first fixed step 21 is arranged at the upper end of the guide ring 3, and the upper end surface of the heat-insulating layer 10 is flush with the first fixed step 21; be equipped with on the up end of heat preservation 10 and go up ring 11, it forms notch cuttype structure with heat preservation 10 to go up ring 11, and this notch cuttype structure cooperatees with first fixed step 21.
An upper second fixing step 23 and a lower second fixing step 23 are arranged on one side, close to the opening end of the mold, of the second heating chamber 9 on the guide ring 3, the lower end of the heat-insulating layer 10 is supported on the upper second fixing step 23, and the outer side face of the heat-insulating layer 10 is flush with the outer side face of the upper second fixing step 23; the lower end face of the panel 12 rests on a second fixed step 23 below; the face plate 12 is fixed to the guide ring 3 by fixing screws 13.
A first step 15 is arranged at the lower end of the guide ring 3, and a second step 16 matched with the first step 15 is arranged on the base 1; the first step 15 and the second step 16 are arranged in a staggered mode, so that mutual circulation of air in the die and cold air outside the die can be reduced.
The thickness of the part, far away from the opening end of the mould, of the heat-insulating layer is larger than the thickness of the part, close to the opening end of the mould, of the heat-insulating layer, so that the heat loss of the upper end of the mould can be reduced except the heat transferred to the tire blank through the mould, the temperature of the heating medium circulating to the lower end of the mould is improved, and the temperature of the steam heating medium is ensured to be consistent to the upper end and the; and the heat insulation material is directly contacted with the appearance of the guide ring, so that heat loss is reduced.
The utility model discloses the step design in the guide ring outside makes guide ring upper portion intensity unanimous basically with the lower part, makes its upper and lower extreme warp unanimous basically, guarantees that the effort difference value of applying from top to bottom to the decorative pattern piece reduces, reduces the surface pressure of bore position about the decorative pattern piece, extension mould life.
The utility model discloses the design has the step of mutually supporting between base and the guide ring, reduces the circulation each other of air and outside cold air in the mould, makes guide ring and the loss of slider lower extreme heat reduce, improves mould lower extreme temperature.
The utility model discloses the heat transfer area disparity of well first heating chamber and second heating chamber reduces, guarantees that the temperature difference is within the certain limit about the mould, guarantees temperature uniformity.
The heating chamber of the utility model is divided into an upper part and a lower part, after the steam enters a cycle from the first heating chamber, the steam enters the second heating chamber through the through hole, and the steam circulates a cycle again along the direction opposite to the air inlet direction, thereby ensuring that the steam heat heats the die sufficiently; the steam circulates in the mould for 2 weeks, so that the heating efficiency is higher and the temperature is more uniform.
The specification takes a tire mold with a phi 1000 × H400 specification as an example for specific description:
the pressure at the upper and lower calibers of the tire grinding tool in the prior art is 42Mpa/16Mpa, and the pressure at the upper and lower calibers of the utility model is 28/11.5 Mpa; the temperature of the lower caliber is increased by about 0.8 ℃, and the temperature difference between the upper caliber and the lower caliber is reduced to about 0.8 ℃ from the previous 1.5 ℃.
The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.
Claims (10)
1. A tire mold comprises a mold shell and a mold cavity, wherein the mold shell is arranged outside the mold cavity and comprises a base (1), an upper cover (2) and a guide ring (3), a heating chamber is arranged in the guide ring (3), the heating chamber comprises a first heating chamber (8) and a second heating chamber (9) which are communicated with each other, a through hole (14) is formed between the first heating chamber (8) and the second heating chamber (9), a heat-insulating layer (10) is arranged on the outer side of the guide ring (3), and the heat-insulating layer (10) coats the heating chamber; the method is characterized in that: the outer side part of the guide ring (3) is arranged in a step shape, and the inner side of the heat-insulating layer (10) is arranged in a step shape matched with the outer side of the guide ring (3);
the thickness of the heat-insulating layer (10) far away from the opening end part of the die is larger than that near the opening end part of the die.
2. A tire mold as in claim 1, wherein: a first step (15) is arranged at the lower end of the guide ring (3), and a second step (16) matched with the first step (15) is arranged on the base (1); the first step (15) and the second step (16) are arranged in a staggered mode.
3. A tire mold as in claim 1, wherein: a heating medium inlet (17) is arranged on the first heating chamber (8), and a heating medium outlet (18) is arranged on the second heating chamber (9); the first heating chamber (8) is located at the end part of the guide ring (3) far away from the opening end of the mould, and the second heating chamber (9) is located at the end part of the guide ring (3) close to the opening end of the mould.
4. A tire mold as in claim 1, wherein: the outer side of the guide ring (3) is provided with a step, and the inner side of the heat-insulating layer (10) is provided with a step matched with the step of the guide ring (3).
5. A tire mold as in claim 1, wherein: the outer side of the heat-insulating layer (10) is coated with a panel (12), and the outer peripheral surface of the panel (12) is a cylindrical surface.
6. A tire mold as in claim 3, wherein: a first partition plate (19) is arranged in the first heating chamber (8), and a second partition plate (20) is arranged in the second heating chamber (9);
the first partition plate (19) and the second partition plate (20) are arranged in a staggered mode in the circumferential direction; two ports of the through hole (14) are arranged in a space formed by circumferentially staggering a first partition plate (19) and a second partition plate (20), the heating medium inlet (17) is positioned on the other side, opposite to the through hole (14), of the first partition plate (19), and the heating medium outlet (18) is positioned on the other side, opposite to the through hole (14), of the second partition plate (20);
or the first partition plate (19) and the second partition plate (20) are circumferentially aligned, the through hole (14) is positioned on one side of the first partition plate (19) and the second partition plate (20), and the heating medium inlet (17) and the heating medium outlet (18) are positioned on the other side of the first partition plate (19) and the second partition plate (20) opposite to the through hole (14).
7. A tire mold as in claim 1, wherein: a first fixed step (21) is arranged at the upper part of the guide ring (3), and the upper end surface of the heat-insulating layer (10) is flush with the first fixed step (21); be equipped with on the up end of heat preservation (10) and go up ring (11), it forms the notch cuttype structure with heat preservation (10) to go up ring (11), and this notch cuttype structure cooperatees with first fixed step (21).
8. A tire mold as in claim 4, wherein: an outer circle step (22) is arranged between the first heating chamber (8) and the second heating chamber (9) on the guide ring (3), and the outer circle step (22) is matched with the step on the inner side of the heat preservation layer (10).
9. A tire mold as in claim 1, wherein: and a second fixed step (23) is arranged on one side, close to the opening end of the mold, of the second heating chamber (9) on the guide ring (3), and the lower end of the heat-insulating layer (10) is supported on the outer second fixed step (23).
10. A tyre mould as claimed in any one of claims 1 to 9, wherein: the ratio of the heat transfer area of the first heating chamber (8) to the heat transfer area of the second heating chamber (9) is 0.7-1.3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022693114.2U CN212472104U (en) | 2020-11-20 | 2020-11-20 | Tire mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022693114.2U CN212472104U (en) | 2020-11-20 | 2020-11-20 | Tire mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212472104U true CN212472104U (en) | 2021-02-05 |
Family
ID=74449169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022693114.2U Active CN212472104U (en) | 2020-11-20 | 2020-11-20 | Tire mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212472104U (en) |
-
2020
- 2020-11-20 CN CN202022693114.2U patent/CN212472104U/en active Active
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