CN115366299A - Manufacturing method of tire mold - Google Patents
Manufacturing method of tire mold Download PDFInfo
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- CN115366299A CN115366299A CN202211120865.2A CN202211120865A CN115366299A CN 115366299 A CN115366299 A CN 115366299A CN 202211120865 A CN202211120865 A CN 202211120865A CN 115366299 A CN115366299 A CN 115366299A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 36
- 238000012545 processing Methods 0.000 claims abstract description 46
- 238000005242 forging Methods 0.000 claims abstract description 43
- 238000000137 annealing Methods 0.000 claims abstract description 24
- 238000005266 casting Methods 0.000 claims abstract description 16
- 238000013461 design Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 18
- 238000005553 drilling Methods 0.000 claims description 9
- 238000003754 machining Methods 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 description 5
- 238000012937 correction Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/24—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2030/00—Pneumatic or solid tyres or parts thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Forging (AREA)
Abstract
The invention provides a manufacturing method of a tire mold, and relates to the technical field of tire mold production and processing. The manufacturing method of the tire mold comprises the following specific steps: step one, casting a blank: casting two blanks with fixed volumes according to the design size of a tire mold, wherein the two blanks are respectively used as an upper mold blank and a lower mold blank; step two, forging the blank: forging the two blanks formed by casting by using a forging machine to form the main body outline of the blanks; step three, blank annealing: sending the two forged blanks into an annealing furnace for annealing treatment; step four, reshaping the blank: and after the annealing is finished, stacking the upper die blank and the lower die blank, and synchronously correcting the upper die blank and the lower die blank by using a correcting machine. By adopting the rough forging, the finish forging and the combined processing technology, the turning and the grain processing of the upper die and the lower die can be quickly finished after the forging is finished, the matching precision between the upper die and the lower die is ensured, and the production processing efficiency and the processing progress can be improved.
Description
Technical Field
The invention relates to the technical field of tire mold production and processing, in particular to a manufacturing method of a tire mold.
Background
A tire is a ground-rolling circular ring-shaped elastic rubber article mounted on various vehicles or machines. Generally mounted on a metal rim, and is capable of supporting a vehicle body, buffering external impact, achieving contact with a road surface and ensuring the driving performance of a vehicle. Tires are often used under complex and severe conditions, which are subjected to various deformations, loads, forces and high and low temperature effects during running, and therefore must have high load-bearing, traction and cushioning properties. At the same time, high abrasion resistance and flexibility resistance, and low rolling resistance and heat build-up are also required. The tire mold is used for vulcanizing and molding various tires, and generally comprises a segmented mold and two half molds, wherein the segmented mold consists of a pattern ring, a mold sleeve and an upper side plate and a lower side plate, and the segmented mold is divided into a conical surface guide segmented mold and an inclined plane guide segmented mold; the two half moulds are composed of an upper mould and a lower mould.
The tire major structure is after the support shaping, still need vulcanize the processing, the tire mould is dedicated mould when rubber tire vulcanizes, the most common tire vulcanizes the mould at present all has last mould, two constitutions of lower mould, what tire mould production was made in the market at present is earlier with last, lower mould main part forges the shaping, reuse lathe is in proper order after the annealing to last, the lower mould carries out the rough turning, the finish turning, utilize CNC machining center to process out the decorative pattern of tire wall respectively at the mould inboard at last, this kind of tire mould production manufacturing process is not only time-consuming and energy-consuming, can't guarantee the cooperation precision between the upper and lower mould, also do not do benefit to simultaneously and improve production machining efficiency and process progress, the mould is in the in-service use, the tire surface of processing produces a lot of corner waste material easily, follow-up still needs to carry out manual work again and clears away.
Therefore, a new manufacturing method of the tire mold is developed.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a manufacturing method of a tire mold, which solves the problems that the traditional tire mold production and manufacturing process is time-consuming and labor-consuming, the matching precision between an upper mold and a lower mold cannot be ensured, the production and processing efficiency and the processing progress are not improved, a lot of corner waste materials are easily generated on the surface of a processed tire in the actual use process of the mold, and manual cleaning is needed again in the follow-up process.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a manufacturing method of a tire mold comprises the following specific steps:
step one, casting a blank: casting two blanks with fixed volume according to the design size of a tire mold, wherein the two blanks are respectively used as an upper mold blank and a lower mold blank;
step two, forging the blank: forging the two blanks formed by casting by using a forging machine to form the main body outline of the blanks;
step three, blank annealing: sending the two forged blanks into an annealing furnace for annealing treatment;
step four, reshaping the blank: after the annealing is finished, stacking the upper die blank and the lower die blank, and synchronously correcting the upper die blank and the lower die blank by using a correcting machine;
step five, end face turning: turning the end faces of the matched molds of the upper mold blank and the lower mold blank by using a lathe respectively, so that the end faces of the upper mold blank and the lower mold blank are kept flush, and the gap error is less than or equal to 0.3mm;
step six, turning the excircle: the upper die blank and the lower die blank are clamped and fixed by a rotating main shaft and a jacking mechanism of a lathe, the central axes of the upper die blank and the lower die blank are positioned on the same straight line, the two blanks are driven to rotate synchronously by the rotating main shaft, and then the excircle turning of the upper die blank and the lower die blank is completed by an excircle turning tool;
seventhly, turning an inner circle: clamping and fixing the upper die blank and the lower die blank after turning the outer circle by using a fixing clamp, fixing the lower die blank on a rotating main shaft, and simultaneously completing the turning of the inner circles of the upper die blank and the lower die blank by an inner circle lane;
step eight, grain processing: after the inner circle is turned, the whole body is moved into a CNC machining center, a lower die blank is fixed on a fixing base of the CNC machining center, and grains are machined on the inner sides of the upper die blank and the lower die blank through a CNC machining main shaft;
step nine, drilling: drilling a material injection hole at the top of the upper die by using drilling equipment;
step ten, welding and detecting: according to the actual installation and connection requirements of the die, corresponding connecting seats or lifting lugs are welded on the processed upper die and the processed lower die respectively, and the size and the precision of the whole die are detected.
Preferably, the blank cast in the step one is circular, and the circular cast blank is convenient for casting production and subsequent forging processing.
Preferably, the blank forging in the second step is divided into two forging stages, wherein the first stage adopts a rough forging die to finish rough forging forming, and the second stage adopts a finish forging die to finish forging forming.
Through the technical scheme, the rough forging and the finish forging of the blank can be respectively completed in the first stage and the second stage, the blank subjected to the finish forging is more convenient for subsequent production and processing, and meanwhile, the processing time can be saved.
Preferably, the annealing temperature of the blank in the third step is controlled to be 525-530 ℃, and the annealing time is 2-3h.
By adopting the technical scheme, the blank can be well destressed after being annealed for 2-3h at the temperature of 525-530 ℃, and 90-95% of the internal stress of the casting can be eliminated.
Preferably, the synchronous reshaping of the upper die blank and the lower die blank in the fourth step comprises outer circle reshaping and inner circle reshaping.
Through the technical scheme, the inner and outer circles of the upper die blank and the lower die blank are shaped in a synchronous mode, so that the size deviation between the upper die blank and the lower die blank can be guaranteed, and the subsequent turning processing is facilitated.
Preferably, when the end face turning, the outer circle turning and the inner circle turning are carried out, a vertical lathe and a horizontal lathe can be adopted.
Preferably, the inner circle turning, the texture processing and the fixing clamp need to be kept fixed in the transferring process between the inner circle turning and the texture processing.
Through the technical scheme, go up the mould blank and fix through adopting mounting fixture with the lower mould blank, can guarantee interior round turning, line processing and the fixed of relative position between the two in the transportation process, can not take place the displacement between the two to guarantee the axiality in lathe work and the line course of working, and then guaranteed the assembly precision between upper and lower mould, the mould is at the in-process of in-service use, the tire of processing out also can not produce a lot of corner waste materials, thereby follow-up scavenging period has been practiced thrift.
Preferably, the texture processing is finished at one time in the texture processing process, and the machine cannot be stopped or recalibrated in the midway.
Through the technical scheme, the processing precision of the grains can be ensured, the grains of the processed tire are more uniform and attractive, and the tire has better wear resistance and skid resistance.
(III) advantageous effects
The invention provides a manufacturing method of a tire mold. The method has the following beneficial effects:
1. according to the manufacturing method of the tire mold, the rough forging, the finish forging and the combined machining process are adopted, the turning and the grain machining of the upper mold and the lower mold can be rapidly completed after the forging is completed, the matching precision between the upper mold and the lower mold is ensured, and meanwhile, the production machining efficiency and the machining progress can be improved.
2. According to the manufacturing method of the tire mold, the upper mold and the lower mold are combined and processed, so that the assembling precision between the upper mold and the lower mold can be guaranteed, the processing procedure is simplified, and the processed tire cannot generate a lot of corner waste materials in the using process of the mold, so that the subsequent clearing time is saved.
Drawings
FIG. 1 is a schematic view of a machined structure of the facing process of the present invention;
FIG. 2 is a schematic view of a machining structure of the outer circle turning process of the present invention;
FIG. 3 is a schematic view of the processing structure of the inner circle turning process of the present invention;
fig. 4 is a schematic view of a processing structure of the grain processing process of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1 to 4, an embodiment of the present invention provides a method for manufacturing a tire mold, including the following specific steps:
step one, casting a blank: casting two blanks with fixed volume according to the design size of a tire mold, wherein the two blanks are respectively used as an upper mold blank and a lower mold blank;
step two, forging the blank: forging the two blanks formed by casting by using a forging machine to form the main body outline of the blanks;
step three, blank annealing: sending the two forged and formed blanks into an annealing furnace for annealing treatment;
step four, reshaping the blank: after the annealing is finished, stacking the upper die blank and the lower die blank, and synchronously correcting the upper die blank and the lower die blank by using a correcting machine;
step five, end face turning: turning the end faces of the upper die blank and the lower die blank which are matched with each other by using a lathe respectively to ensure that the end faces of the upper die blank and the lower die blank are kept flush, and the gap error is less than or equal to 0.3mm;
step six, turning the excircle: the upper die blank and the lower die blank are clamped and fixed by a rotating main shaft and a jacking mechanism of a lathe, the central axes of the upper die blank and the lower die blank are positioned on the same straight line, the two blanks are driven to rotate synchronously by the rotating main shaft, and then the excircle turning of the upper die blank and the lower die blank is completed by an excircle turning tool;
step seven, turning the inner circle: clamping and fixing the upper die blank and the lower die blank after turning the outer circle by using a fixing clamp, fixing the lower die blank on a rotating main shaft, and simultaneously completing the turning of the inner circles of the upper die blank and the lower die blank by an inner circle lane;
step eight, grain processing: after the inner circle is turned, the whole inner circle is moved into a CNC machining center, a lower die blank is fixed on a fixing base of the CNC machining center, and grains are machined on the inner sides of the upper die blank and the lower die blank through a CNC machining main shaft;
step nine, drilling: drilling a material injection hole at the top of the upper die by using drilling equipment;
step ten, welding and detecting: according to the actual installation and connection requirements of the die, corresponding connecting seats or lifting lugs are welded on the processed upper die and the processed lower die respectively, and the size and the precision of the whole die are detected.
In the manufacturing method, the blank cast in the step one is annular, and the annular cast blank is convenient for casting production and subsequent forging processing;
in the second step, the blank forging is divided into two forging stages, wherein the first stage adopts a roughing die to finish rough forging forming, the second stage adopts a precision forging die to finish precision forging forming, the first stage and the second stage can respectively finish rough forging and precision forging of the blank, the blank after precision forging is more convenient for subsequent production and processing, and meanwhile, the processing time can be saved;
in the third step, the annealing temperature of the blank is controlled to be 525-530 ℃, the annealing time is 2-3h, the annealing time of the blank is 2-3h at the temperature of 525-530 ℃, the stress can be well removed, and the internal stress of the casting can be eliminated by 90-95%;
the synchronous correction of the upper die blank and the lower die blank in the fourth step comprises outer circle correction and inner circle correction, and the synchronous correction of the inner and outer circles of the upper die blank and the lower die blank can ensure the size deviation between the upper die blank and the lower die blank and is more convenient for subsequent turning;
when the end face turning, the external circle turning and the internal circle turning are carried out, a vertical lathe and a horizontal lathe can be adopted; the inner circle turning, the grain processing and the fixing clamp in the transferring process between the inner circle turning and the grain processing are required to be kept fixed, the upper die blank and the lower die blank are fixed by adopting the fixing clamp, the inner circle turning, the grain processing and the fixing of the relative position in the transferring process between the inner circle turning and the grain processing can be ensured, the inner circle turning and the grain processing can not be displaced between the inner circle turning and the grain processing, the coaxiality in the turning processing and the grain processing can be ensured, the assembling precision between the upper die and the lower die can be further ensured, and a large amount of corner waste materials can not be generated in the processed tire in the actual using process of the die, so that the subsequent clearing time is saved;
in the process of grain processing, the grain processing is required to be completed at one time, and the machine cannot be stopped or recalibrated midway, so that the processing precision of the grains can be ensured, the processed tyre grains are more uniform and attractive, and the tyre has better wear resistance and skid resistance.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The manufacturing method of the tire mold is characterized by comprising the following specific steps of:
step one, casting a blank: casting two blanks with fixed volume according to the design size of a tire mold, wherein the two blanks are respectively used as an upper mold blank and a lower mold blank;
step two, forging the blank: forging the two blanks formed by casting by using a forging machine to form the main body outline of the blanks;
step three, blank annealing: sending the two forged blanks into an annealing furnace for annealing treatment;
step four, reshaping the blank: after the annealing is finished, stacking the upper die blank and the lower die blank, and synchronously reshaping the upper die blank and the lower die blank by using a reshaping machine;
step five, end face turning: turning the end faces of the matched molds of the upper mold blank and the lower mold blank by using a lathe respectively, so that the end faces of the upper mold blank and the lower mold blank are kept flush, and the gap error is less than or equal to 0.3mm;
step six, turning the excircle: the upper die blank and the lower die blank are clamped and fixed by a rotating main shaft and a jacking mechanism of a lathe, the central axes of the upper die blank and the lower die blank are positioned on the same straight line, the two blanks are driven to rotate synchronously by the rotating main shaft, and then the excircle turning of the upper die blank and the lower die blank is completed by an excircle turning tool;
seventhly, turning an inner circle: clamping and fixing the upper die blank and the lower die blank after turning the outer circle by using a fixing clamp, fixing the lower die blank on a rotating main shaft, and simultaneously completing the inner circle turning of the upper die blank and the lower die blank by using an inner circle lane;
step eight, grain processing: after the inner circle is turned, the whole inner circle is moved into a CNC machining center, a lower die blank is fixed on a fixing base of the CNC machining center, and grains are machined on the inner sides of the upper die blank and the lower die blank through a CNC machining main shaft;
step nine, drilling: drilling a material injection hole at the top of the upper die by using drilling equipment;
step ten, welding and detecting: according to the actual installation and connection requirements of the die, corresponding connecting seats or lifting lugs are welded on the processed upper die and the processed lower die respectively, and the size and the precision of the whole die are detected.
2. A method of manufacturing a tire mold as in claim 1, wherein: the blank cast in the first step is annular.
3. A method of manufacturing a tire mold as in claim 1, wherein: and in the second step, the blank forging is divided into two forging stages, wherein the first stage adopts a rough forging die to finish rough forging forming, and the second stage adopts a finish forging die to finish forging forming.
4. A method of manufacturing a tire mold as in claim 1, wherein: in the third step, the annealing temperature of the blank is controlled to be 525-530 ℃, and the annealing time is 2-3h.
5. A method of manufacturing a tire mold as in claim 1, wherein: and in the fourth step, the synchronous reshaping of the upper die blank and the lower die blank comprises excircle reshaping and inner circle reshaping.
6. A method of manufacturing a tire mold as in claim 1, wherein: when the end face turning, the outer circle turning and the inner circle turning are carried out, a vertical lathe and a horizontal lathe can be adopted.
7. A method of manufacturing a tire mold as in claim 6, wherein: the inner circle turning, the grain processing and the fixing clamp in the transferring process between the inner circle turning and the grain processing need to be kept fixed.
8. A method of manufacturing a tire mold as in claim 1, wherein: in the texture processing process, the texture processing needs to be finished at one time, and the machine cannot be stopped or recalibrated midway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211120865.2A CN115366299B (en) | 2022-09-15 | 2022-09-15 | Manufacturing method of tire mold |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211120865.2A CN115366299B (en) | 2022-09-15 | 2022-09-15 | Manufacturing method of tire mold |
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| Publication Number | Publication Date |
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| CN115366299A true CN115366299A (en) | 2022-11-22 |
| CN115366299B CN115366299B (en) | 2024-06-14 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040187312A1 (en) * | 2003-03-25 | 2004-09-30 | Shu-Yuan Liao | Method of manufacturing for aluminum alloy wheel rim |
| JP2005047139A (en) * | 2003-07-28 | 2005-02-24 | Ngk Insulators Ltd | Mold for molding tire and its manufacturing method |
| JP2007015152A (en) * | 2005-07-06 | 2007-01-25 | Ngk Insulators Ltd | Manufacturing method of piece assembling type tire mold |
| CN101224541A (en) * | 2008-02-05 | 2008-07-23 | 揭阳市天阳模具有限公司 | Method for accurately manufacturing pattern sector block of radial tire segmented mold |
| JP2009178994A (en) * | 2008-01-31 | 2009-08-13 | Yokohama Rubber Co Ltd:The | Manufacturing process of tire vulcanizing mold |
| CN111465478A (en) * | 2017-11-27 | 2020-07-28 | 株式会社普利司通 | Method for manufacturing tire mold |
-
2022
- 2022-09-15 CN CN202211120865.2A patent/CN115366299B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040187312A1 (en) * | 2003-03-25 | 2004-09-30 | Shu-Yuan Liao | Method of manufacturing for aluminum alloy wheel rim |
| JP2005047139A (en) * | 2003-07-28 | 2005-02-24 | Ngk Insulators Ltd | Mold for molding tire and its manufacturing method |
| JP2007015152A (en) * | 2005-07-06 | 2007-01-25 | Ngk Insulators Ltd | Manufacturing method of piece assembling type tire mold |
| JP2009178994A (en) * | 2008-01-31 | 2009-08-13 | Yokohama Rubber Co Ltd:The | Manufacturing process of tire vulcanizing mold |
| CN101224541A (en) * | 2008-02-05 | 2008-07-23 | 揭阳市天阳模具有限公司 | Method for accurately manufacturing pattern sector block of radial tire segmented mold |
| CN111465478A (en) * | 2017-11-27 | 2020-07-28 | 株式会社普利司通 | Method for manufacturing tire mold |
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| CN115366299B (en) | 2024-06-14 |
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