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CN-122008605-A - Mold for tire molding and demolding device thereof

CN122008605ACN 122008605 ACN122008605 ACN 122008605ACN-122008605-A

Abstract

The application relates to the technical field of tire forming dies, in particular to a die for tire forming and a demolding device thereof, which comprises a die holder, wherein the die holder is provided with a lower die, an upper die and a diversion seat, the top of the die holder is provided with the diversion seat positioned at the inner side of the lower die, the outer side of the diversion seat is fixedly provided with a capsule, the water diversion device is characterized in that the diversion seat is provided with at least two diversion trenches, the diversion trenches are circumferentially distributed on the diversion seat, one of the diversion trenches is communicated with a hose, one end of the hose, which is far away from the diversion trenches, is attached to the inner wall of the capsule, and the bottom of the hose, which is far away from one end of the diversion trenches, is provided with a drainage tank. Through setting up the hose, and the water drainage tank is offered to the one end of hose laminating capsule inner wall, at the stage to the tire vulcanization shaping, utilize the water drainage tank to be located the minimum of capsule, the comdenstion water can be pressed out under the atmospheric pressure effect in the capsule, compares in current tire vulcanization shaping mould, reduces the comdenstion water and leads the influence to vulcanization temperature, improves the vulcanization shaping quality of tire.

Inventors

  • JIN RENXI
  • XU YUEHONG
  • ZHAN ZHE

Assignees

  • 安徽意心达新材料科技有限公司

Dates

Publication Date
20260512
Application Date
20260410

Claims (7)

  1. 1. The die for tire molding comprises a die holder (1), a lower die (2) is fixedly arranged at the top of the die holder (1), an upper die (3) is arranged at the top of the lower die (2), a guide seat (4) positioned at the inner side of the lower die (2) is arranged at the top of the die holder (1), a capsule (5) is fixedly arranged at the outer side of the guide seat (4), a top end of the capsule (5) is fixedly sleeved at the outer side of a movable ring (6), a movable rod (7) is fixedly arranged at the middle part of the movable ring (6), a positioning seat (8) is arranged at the middle part of the inner side of the die holder (1), the tire molding die is characterized in that the guide seat (4) is provided with guide grooves (401) with the number not less than two, the guide grooves (401) are distributed on the guide seat (4) in a circumferential array, one guide groove (401) is communicated with a hose (13), one end of the hose (13) is far away from the inner wall of the guide groove (5), a drain groove (131) is arranged at the bottom of one end of the hose (13) far away from the guide groove (401), a drain groove (131) is arranged, the drain groove (12) communicated with the drain pipe (401) with the drain pipe (14), and the bottom ends of the rest diversion trenches (401) are communicated with the air inlet pipe (15).
  2. 2. The mold for tire building according to claim 1, wherein an annular flow equalizing box (9) located below the flow equalizing groove (401) is fixedly installed at the bottom of the flow guiding seat (4), a cover plate (10) is installed at the bottom of the annular flow equalizing box (9) in a sealing mode, flow guiding pipes (11) are communicated with the bottom end of the flow guiding groove (401), one flow guiding pipe (11) is communicated with a water draining pipe (12) and a hose (13), and the other flow guiding pipes (11) are communicated with the inner cavity of the annular flow equalizing box (9) and the inside of the flow guiding groove (401).
  3. 3. The mold for tire building according to claim 1, wherein the top end of the positioning seat (8) is fixedly provided with an air guide vertical pipe (16), the moving rod (7) is located at the inner side of the air guide vertical pipe (16), the positioning seat (8) is provided with an exhaust groove (801) communicated with the inner cavity of the air guide vertical pipe (16), the bottom of the positioning seat (8) is provided with an annular groove (802) communicated with the exhaust groove (801), the bottom of the positioning seat (8) is fixedly provided with a bottom plate (18), the bottom of the bottom plate (18) is fixedly provided with an exhaust pipe (19) communicated with the annular groove (802), and the exhaust pipe (19) and the air inlet pipe (15) are provided with flow valves.
  4. 4. A mould for tyre building according to claim 3, characterized in that the top end of the air guide vertical tube (16) is fixedly provided with a limit ring (17), the inner side of the limit ring (17) is movably sleeved with the outer side of the moving rod (7), the limit ring (17) is provided with a plurality of vent holes I (171), the number of the vent holes I (171) is not less than two, and a plurality of vent holes I (171) are circumferentially arranged on the limit ring (17).
  5. 5. Mould for tyre building according to claim 1, characterized in that the air injection device (14) comprises a V-shaped conduit (141) communicated with the guide groove (401), one end of the V-shaped conduit (141) away from the guide groove (401) faces the inner bottom of the capsule (5), one end of the V-shaped conduit (141) away from the guide groove (401) is fixedly provided with an annular sleeve (142), the outer side of the annular sleeve (142) is movably sleeved with a sliding sleeve (143), one end of the sliding sleeve (143) facing the inner bottom of the capsule (5) is provided with a nozzle (144), one end of the sliding sleeve (143) away from the nozzle (144) is fixedly provided with a limiting plug (145), a spring (146) is arranged between the limiting plug (145) and the annular sleeve (142), and the spring (146) is movably sleeved on the outer side of the V-shaped conduit (141).
  6. 6. The tire molding die as claimed in claim 5, wherein the tire molding die is provided with a tire demolding device, the tire demolding device comprises an ejector device (20) arranged at the bottom of a lower die (2), a plurality of longitudinal sliding grooves I (101) are formed in the die holder (1), the number of the longitudinal sliding grooves I (101) is not less than two, a plurality of longitudinal sliding grooves I (101) are circumferentially arranged on the die holder (1), longitudinal sliding grooves II (201) which are the same as the number of the longitudinal sliding grooves I (101) and are communicated with each other are formed in the lower die (2), the ejector device (20) is arranged on the communicated longitudinal sliding grooves I (101) and the longitudinal sliding grooves II (201), the ejector device (20) comprises a positioning tube (21) fixedly arranged at the bottom of the longitudinal sliding grooves I (101), a limiting sliding plug (24) movably arranged in the longitudinal sliding grooves I (101), a pushing block (26) is movably arranged in the longitudinal sliding grooves II (201), a positioning joint (22) is fixedly arranged at the bottom end of the positioning tube (21), a bottom end (23) of the positioning joint (22) is provided with a positioning tube (23), the top end (24) is fixedly connected with a limiting plug (24) and the top end (24) of the limiting plug (24) is fixedly connected with a limiting plug (25), the top of the linkage shaft (25) is fixedly connected with the push block (26), the top of the push block (26) is arranged in a manner of adapting to the inner wall of the lower die (2), and the outer side of the push block (26) is movably sleeved with the inner wall of the longitudinal sliding groove II (201) in a manner of sealing and jointing.
  7. 7. The tire demolding device according to claim 6, wherein the tire demolding method is as follows: s1, continuously introducing cold air into the capsule (5) through an air inlet pipe (15) after vulcanization molding of the tire, spraying the cold air through an air spraying device (14), cooling the inner wall of the capsule (5) and the vulcanized tire, and discharging the cooled tire through an exhaust pipe (19) to solidify the vulcanized tire; S2, after the tire is cooled, the flow rate of cold air introduced into the air inlet pipe (15) is increased, so that the nozzle (144) drives the sliding sleeve (143) to further move towards the inner bottom of the capsule (5) against the elastic force of the spring (146) until the bottom of the outer side of the nozzle (144) can be matched with the lower die (2) to extrude the inner wall of the capsule (5) and the inner wall of the vulcanized tire, and the vulcanized tire is clamped; S3, controlling the upper die (3) to move upwards to be separated from the lower die (2), and simultaneously utilizing the nozzle (144) to be matched with the lower die (2) to clamp the inner side of the tire, so that the upper die (3) is separated from the tire at the same time; S4, stopping introducing cold air into the capsule (5), resetting and moving the nozzle (144) under the action of the elastic force of the spring (146), controlling the moving rod (7) to push the moving ring (6) to move upwards, straightening the capsule (5), injecting air through the air charging pipe (23) to pressurize, enabling the push block (26) to push up the vulcanized and molded tire, and when the push block (26) moves to the upper part of the inner cavity of the lower die (2), filling air between the inner wall of the lower die (2) and the outer wall of the tire, so that the tire is ejected out entirely by utilizing air pressure, and finally taking the tire out of the upper part of the capsule (5) after demolding.

Description

Mold for tire molding and demolding device thereof Technical Field The application relates to the technical field of tire forming dies, in particular to a die for tire forming and a demolding device thereof. Background The vulcanization molding of the tyre is a key step in the production process of the tyre, and relates to the process of converting a molded tyre blank into a finished tyre with specific physical and mechanical properties through a vulcanization process, wherein the molded tyre blank is put into a mould of a vulcanizing machine, and rubber materials in the tyre blank are subjected to crosslinking reaction under the action of vulcanization elements such as heating, pressurizing and the like to form a stable reticular structure, so that the tyre is endowed with strength, elasticity and wear resistance. However, since the existing tire is required to be introduced with high temperature steam and nitrogen gas in the vulcanization molding stage of the mold, the high temperature steam is in contact with the bladder in the mold, the steam in the steam is condensed into liquid water, the nitrogen gas is generally used as a pressurizing medium, the nitrogen gas is generally lower in temperature than the steam and higher in specific gravity than the steam, the nitrogen gas can sink to a lower position, the upper layer is kept as the steam, the layering phenomenon can aggravate the formation of condensed water, the condensed water can flow downwards and gather at a lower position after the upper layer is condensed, the upper side and the lower side of the tire are heated unevenly, the vulcanization quality of the tire can be affected, and the tire can be adhered to the upper mold and the lower mold during the mold separation of the upper mold and the lower mold, and the subsequent demolding efficiency can be affected. Disclosure of Invention The application provides a mold for tire molding and a demolding device thereof, which have the advantages of high tire molding quality and high demolding efficiency, and are used for solving the problems that the tire vulcanization quality is influenced due to the generation of condensed water in the existing tire vulcanization molding stage and the demolding efficiency is influenced after the upper mold and the lower mold are separated. The tire molding die comprises a die seat, a lower die, an upper die, a guide seat, a capsule, a movable ring, a movable rod, a positioning seat, a hose, a drain pipe, an air injection device and an air inlet pipe, wherein the die is used for tire molding, the lower die is fixedly arranged at the top of the die seat, the upper die is arranged at the top of the lower die, the guide seat is arranged at the top of the die seat, the capsule is fixedly arranged at the outer side of the guide seat, the top of the capsule is fixedly sleeved at the outer side of the movable ring, the movable rod is fixedly arranged in the middle of the movable ring, the positioning seat is arranged in the middle of the inner side of the die seat, the guide seat is provided with at least two guide grooves, the circumferential arrays of the guide grooves are distributed on the guide seat, one guide groove is communicated with the hose, one end of the hose, which is far away from the guide groove, is attached to the inner wall of the capsule, the bottom of one end, which is far away from the guide groove, is provided with the drain pipe, the guide grooves communicated with the drain pipe, the top ends of the other guide grooves are communicated with the air injection device, and the bottom ends of the other guide grooves are communicated with the air inlet pipe. Further, the bottom fixed mounting of guide holder has the annular case that flow equalizes that is located the guiding gutter below, the bottom sealing mounting of annular case that flow equalizes has the apron, the bottom switch-on of guiding gutter has the honeycomb duct, and one of them honeycomb duct intercommunication drain pipe and hose, the inside of the inner chamber and the guiding gutter of the annular case that flow equalizes of other honeycomb ducts intercommunication. Further, the top fixed mounting of positioning seat has the air guide standpipe, the carriage release lever is located the inboard of air guide standpipe, set up the exhaust duct of intercommunication air guide standpipe inner chamber on the positioning seat, the ring channel of intercommunication exhaust duct has been seted up to the bottom of positioning seat, the bottom fixed mounting of positioning seat has the bottom plate, the bottom fixed mounting of bottom plate has the blast pipe of switch-on ring channel, all set up the flow valve in blast pipe and the intake pipe. Further, the top fixed mounting of air guide standpipe has the spacing ring, the inboard of spacing ring and the outside activity of carriage release lever cup joint, and offered a plurality of air vent I on the spacing ring, the quantity of air vent I