CN215661346U

CN215661346U - Vulcanizer clamping device

Info

Publication number: CN215661346U
Application number: CN202120242937.5U
Authority: CN
Inventors: 王�锋; 殷允锋; 徐天锋; 刘向上; 郭平; 周广辉; 袁鲁梅; 孙学历; 陈雪梅; 郭建平; 刘羽; 杨秀坤
Original assignee: Shandong Linglong Tyre Co Ltd
Current assignee: Shandong Linglong Tyre Co Ltd
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2022-01-28
Anticipated expiration: 2031-01-28

Abstract

The utility model relates to the technical field of rubber, and discloses a clamping device of a vulcanizing machine, which comprises: the tire bladder-free vulcanizing machine is designed by matching with a tire bladder-free vulcanizing process, a bladder in a central mechanism of a traditional vulcanizing machine is cancelled, the structure of the tire shaping vulcanizing machine is simplified, the original bladder changing time and mold warming time are saved, the opening rate of equipment is improved, the appearance quality problem of the tire caused by the bladder is avoided, the tire production cost, the labor intensity and the shutdown rate are reduced, and the tire vulcanization production efficiency is improved.

Description

Vulcanizer clamping device

Technical Field

The utility model relates to the technical field of rubber, in particular to a clamping device of a vulcanizing machine.

Background

At present, no matter the steam-superheated water vulcanization process or the steam-nitrogen vulcanization process, a bladder is generally adopted as an intermediate medium in the tire vulcanization production process to transfer the temperature (heat) and pressure required by the vulcanized tire. The capsule is fixed on the central mechanism sleeve through a clamp on the central mechanism, and the up-and-down motion of the capsule is realized by utilizing the up-and-down axial motion of the central mechanism sleeve; the central mechanism gland and the inlet and return pipeline thereof are communicated with the shaping/vacuumizing pipeline and the internal pressure pipeline, so that the shaping operation of expansion and contraction of the capsule and the filling and vulcanization of the vulcanization medium are realized.

In the tire vulcanization production process, the bladder is used as an intermediate medium to transfer the temperature (heat) and pressure required by tire vulcanization, namely, the vulcanization medium transfers the heat to the bladder, and then the bladder transfers the heat to the tire blank to perform tire vulcanization. Because the vulcanization capsule is a rubber product, and the rubber is a poor heat conductor, a part of heat is lost in the process of transferring heat through the vulcanization capsule, and the heat transfer of the rubber has hysteresis, so that the temperature of a vulcanization medium must be correspondingly increased to meet the temperature condition in the process requirement of vulcanizing a tire blank, thereby changing the phase and increasing the steam pressure or hot water temperature, and finally increasing the energy consumption and the production cost. In addition, the uniformity and dynamic balance of the tire are severely affected by the non-uniformity of bladder thickness and non-uniformity of bladder stretching (e.g., cornering, etc.) during the shaping inflation and curing process. In addition, the capsule is a consumable product, which affects the tire loading quality of the tire blank to a certain extent and has high production cost.

SUMMERY OF THE UTILITY MODEL

The utility model provides a clamping device of a vulcanizing machine, which solves the problems that the uniformity and the dynamic balance performance of a tire are seriously influenced and the cost is higher because a bladder is adopted as an intermediate medium to transfer the temperature (heat) and the pressure required by vulcanizing the tire in the vulcanizing production process of the prior tire mentioned in the background art.

In order to solve the technical problem, the utility model discloses a clamping device of a vulcanizing machine, which comprises: mould cavity, fixture and central mechanism, the opening has been seted up to mould cavity one end, fixture with the opening position corresponds, just fixture one end is stretched into through the opening the inside cavity of mould cavity, with the inside wall shaping tire bead mouth external profile of mould cavity opening, the fixture other end movably connect in central mechanism, central mechanism axial motion is with the drive fixture opens or is closed.

Preferably, the mold cavity comprises a first side plate and a second side plate which are symmetrically arranged to form side walls on two sides of the mold cavity, and a mold end cover of which two ends are respectively connected to the first side plate and the second side plate; the first side plate, the second side plate and the mold end cover form an inner space of the mold cavity, and the opening parts are formed at the opening ends of the connection back sides of the first side plate and the second side plate and the mold end cover; the first side plate and the second side plate are used for forming the external contour of the side wall part of the tire, the opening part is used for forming the external contour of the bead opening of the tire, the side, facing the inner space of the mold cavity, of the mold end cover is provided with a pattern block, and the pattern block is used for forming the tire pattern of the crown part of the tire.

Preferably, the clamping mechanism comprises a movable connecting rod, and a first clamp and a second clamp which are arranged at the opening part and are symmetrical with each other, and one end of each of the first clamp and the second clamp extends into the inner space of the mold cavity through the opening part; the middle positions of the first clamp holder and the second clamp holder are respectively and rotatably arranged at two ends of the movable connecting rod.

Preferably, the central mechanism comprises a piston rod and a first movable part and a second movable part which are fixedly mounted on the piston rod respectively, one ends of the first clamp holder and the second clamp holder are hinged to the first movable part and the second movable part respectively in a rotatable mode, and the first movable part and the second movable part move along with the axial direction of the piston rod to drive the first clamp holder and the second clamp holder to open and close at the opening part relative to the first side plate and the second side plate respectively.

Preferably, a hinge joint between the second holder and the second movable portion is provided near the opening portion;

the second holder with on the second movable part and deviating from the position of opening is provided with first spacing portion and the spacing portion of second respectively relatively, first spacing portion and the spacing portion of second are mutually supported spacingly in order to restrict the second holder for the turned angle of second movable part.

Preferably, the first side plate and the second side plate are respectively and correspondingly provided with a first limiting bulge and a second limiting bulge at the opening part, and the first holder and the second holder are respectively and correspondingly provided with a first limiting matching part and a second limiting matching part;

the first limiting matching part and the first limiting protrusion, and the second limiting matching part and the second limiting protrusion are used for limiting the depth of the clamping mechanism extending into the cavity inside the die cavity from the opening part.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of a vulcanizer clamping apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a vulcanizer clamping apparatus according to an embodiment of the present invention;

fig. 3 is an enlarged view at "a" in fig. 1.

In the figure:

100. a mold cavity; 110. an opening part; 120. a first side plate; 121. a first limit protrusion; 130. a second side plate; 131. a second limit bulge; 140. a mold end cap; 150. pattern blocks; 200. a clamping mechanism; 210. a first gripper; 211. a first limit matching part; 220. A second gripper; 221. a second limit matching part; 230. a movable connecting rod; 300. a center mechanism; 310. a first movable portion; 320. a second movable portion; 330. a piston rod; 400. a first limiting part; 500. a second limiting part; 600. a crown; 700. a sidewall; 800. taekwondo.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

When the term "radial" is used, the expression relates to the radial direction of the tyre, if closer to the rotation axis of the tyre, the expression "radially inside"; when the term "circumferential" is used, it is expressed as the tire rolling direction; when the term "tire inner" is used, it is stated that the tire is on the side closer to the rim.

The following is a description of preferred embodiments of the present invention with reference to fig. 1-3.

The utility model provides a clamping device and a clamping method of a vulcanizing machine, which comprises the following steps: the tire bead opening forming device comprises a mold cavity 100, a clamping mechanism 200 and a center mechanism 300, wherein an opening portion 110 is formed in one end of the mold cavity 100, the clamping mechanism 200 corresponds to the opening portion 110 in position, one end of the clamping mechanism 200 extends into a cavity inside the mold cavity 100 through the opening portion 110 and forms the outer contour of a tire bead opening 800 with the inner side wall of the opening portion 110 of the mold cavity 100, the other end of the clamping mechanism 200 is movably connected to the center mechanism 300, and the center mechanism 300 moves axially to drive the clamping mechanism 200 to open or close. The tire bladder-free vulcanizing machine is designed by matching with a tire bladder-free vulcanizing process, a bladder in a central mechanism of the traditional vulcanizing machine is eliminated, the structure of the tire shaping vulcanizing machine is simplified, the tire vulcanizing time is shortened, the tire production cost and the stop rate are reduced, and the tire vulcanizing production efficiency is improved.

It should be noted that the center mechanism 300 of the present application is based on the existing vulcanizer center mechanism 300 and replaces the bladder with the clamp mechanism 200, and the center mechanism 300 moves axially to drive the clamp mechanism 200 to open and close.

It should be noted here that the central mechanism 300 of the present application cancels the bladder, and does not have a step of replacing the bladder, thereby greatly reducing the labor intensity, saving the original bladder replacement time and mold warming time, improving the starting rate of the apparatus, avoiding the problem of the appearance quality of the tire caused by the bladder and reducing the production cost at the same time.

Preferably, the mold cavity 100 includes a first side plate 120 and a second side plate 130 symmetrically disposed to form two side walls of the mold cavity 100, and a mold end cap 140 having two ends respectively connected to the first side plate 120 and the second side plate 130; the first side plate 120, the second side plate 130 and the mold end cap 140 form an inner space of the mold cavity 100, and an opening portion 110 is formed at an opening end of the back side where the first side plate 120 and the second side plate 130 are connected with the mold end cap 140; wherein the first side plate 120 and the second side plate 130 are used for forming the external contour of the sidewall 700 part of the tire, the opening part 110 is used for forming the external contour of the tire bead opening 800, the side of the mold end cover 140 facing the internal space of the mold cavity 100 is provided with a pattern block 150, and the pattern block 150 is used for forming the tire pattern of the tire crown 600 part of the tire.

Preferably, the clamping mechanism 200 includes a movable link 230 and a first clamp 210 and a second clamp 220 disposed at the opening 110 and symmetrical to each other, and one end of the first clamp 210 and one end of the second clamp 220 protrude into the inner space of the mold cavity 100 through the opening 110; the first holder 210 and the second holder 220 are rotatably mounted at middle positions thereof to both ends of the movable link 230, respectively.

It should be noted that, when the clamping mechanism 200 of the present application is in the maximum open state, it forms a curved profile that is the same as the profile of the finished tire bead opening 800; in the minimum closed state, the tire bead is positioned in the inner diameter range of the finished tire bead opening, so that the tire is convenient to unload.

Preferably, the center mechanism 300 includes a piston rod 330 and a first movable portion 310 and a second movable portion 320 respectively fixedly mounted on the piston rod 330, one end of the first clamper 210 and one end of the second clamper 220 are respectively rotatably hinged to the first movable portion 310 and the second movable portion 320, and the first clamper 210 and the second clamper 220 are driven to open and close at the opening 110 opposite to the first side plate 120 and the second side plate 130 by the first movable portion 310 and the second movable portion 320 along with the axial movement of the piston rod 330.

It should be noted that, in the tire loading and vulcanizing process, the manipulator grabs the tire and transfers the tire into the mold, when the manipulator descends to the tire loading and shaping position, the piston rod 330 of the operation center mechanism 300 moves downwards to open the clamping mechanism 200 for clamping and sealing the upper and lower rims of the tire blank, inflating and shaping the tire blank and fixing the tire blank, then the manipulator closes and transfers out of the mold, and when the mold is closed and vulcanized, the vulcanizing medium is directly filled into the inner cavity of the tire blank, so as to directly provide temperature and pressure for the tire blank.

Preferably, the hinge joint of the second holder 220 and the second movable portion 320 is disposed near the opening 110; the second clamper 220 and the second movable portion 320 are respectively provided with a first limiting portion 400 and a second limiting portion 500 at positions opposite to the position departing from the opening portion 110, and the first limiting portion 400 and the second limiting portion 500 are mutually matched for limiting so as to limit the rotation angle of the second clamper 220 relative to the second movable portion 320.

It should be noted that, in the present application, the first limiting portion 400 and the second limiting portion 500 are provided to limit the rotation angle of the second holder 220 and the second movable portion 320, so as to avoid the damage of the device caused by too large or too small rotation angle.

Preferably, the first side plate 120 and the second side plate 130 are respectively provided with a first limiting protrusion 121 and a second limiting protrusion 131 at the position of the opening 110, and the first holder 210 and the second holder 220 are respectively provided with a first limiting matching part 211 and a second limiting matching part 221 at the positions corresponding to the first limiting protrusion 121 and the second limiting protrusion 131; the first limit fitting part 211, the first limit protrusion 121, the second limit fitting part 221 and the second limit protrusion 131 are used for limiting the depth of the clamping mechanism 200 extending into the cavity inside the mold cavity 100 from the opening part 110.

It should be noted that, this application has guaranteed the stability of connecting through setting up first spacing arch 121, second spacing arch 131, first spacing cooperation portion 211 and the spacing cooperation portion 221 of second, has avoided leading to the unexpected condition to appear in the course of the work because of the unstability of device.

Further, in some embodiments of the present application, a method of clamping a vulcanizer clamping apparatus comprises:

during the tire loading and curing process, the tire is transferred into the mold cavity 100;

s1: the clamping mechanism 200 extends into the inner space of the mold cavity 100 from the opening part 110, and the first limit matching part 211 is contacted with the first limit protrusion 121, and the second limit matching part 221 is contacted with the second limit protrusion 131 for matching and limiting;

s2: the central mechanism 300 is operated to move along the axial direction of the piston rod 330 and towards the direction of the second movable part 320, the first limiting part 400 is contacted with the second limiting part 500, and the central mechanism 300 drives the second holder 220 to move towards the direction of the second side plate 130 through the matching limiting of the first limiting part 400 and the second limiting part 500;

the central mechanism 300 drives one end of the first clamper 210 to move towards the moving direction of the piston rod 330 through the first movable part 310, and the other end of the first clamper 210 moves towards the direction of the first side plate 120 by taking the movable connection position of the first clamper 210 and the movable connecting rod 230 as the center;

the first gripper 210 and the second gripper 220 move away from each other, and the gripping mechanism 200 is in an open state at this time, so as to grip and seal the tire blank rim and form the outer contour of the tire bead opening 800;

it should be noted that, in the present application, the piston rod 330 moves axially, one end of the second position-limiting portion 500 is subjected to a lateral force, the other end of the second position-limiting portion 500 drives the first position-limiting portion 400 to move laterally, and at this time, the second holder 220 moves toward the second side plate 130; when the piston rod 330 moves axially, one end of the first movable portion 310 is forced axially to move along the moving direction of the piston rod 330, and at this time, the other end of the first movable portion 310 drives the first holder 210 to move toward the first side plate 120.

S3, inflating, shaping and fixing the green tire in the mold cavity 100;

s4, the central mechanism 300 is operated to move along the axial direction of the piston rod 330 and towards the direction of the first movable part 310, the first limiting part 400 and the second limiting part 500 are disengaged for limiting, the second movable part 320 rotates by taking the hinged position of the second movable part 320 and the second clamper 220 as the center, and drives the second clamper 220 to move towards the direction departing from the second side plate 130;

the central mechanism 300 drives one end of the first clamper 210 to move towards the moving direction of the piston rod 330 through the first movable part 310, and the other end of the first clamper 210 moves towards the direction away from the first side plate 120 by taking the movable connection position of the first clamper 210 and the movable connecting rod 230 as the center;

the first gripper 210 and the second gripper 220 are moved closer to each other while the gripping mechanism 200 is in the closed state, and then the gripping device is removed from the mold cavity 100;

s5: and closing the opening part 110 of the mold cavity 100, vulcanizing the mold cavity 100 after closing the mold, and directly filling a vulcanizing medium into the inner cavity of the green tire during vulcanization to directly provide temperature and pressure for the green tire.

It should be noted that, the adjustment of the production process of the inner liner is mainly to implement the pre-vulcanization of the inner liner in the production process of the inner liner, mainly the pre-vulcanization of the air-tight layer, and the depth and the vulcanization degree of the pre-vulcanized inner liner required by the adjustment are determined according to the specification of the tire, so that the air-tight layer can ensure that the vulcanization medium does not seep out of the inner liner like a capsule in the vulcanization production. On the other hand, according to the vulcanization degree and the air tightness requirement of the inner liner layer after the new process is adopted, the formula of the rubber material of the inner liner layer is adjusted so as to ensure the uniformity of the integral vulcanization degree of the tire.

It should be noted here that the clamping mechanism 200 of the present application is mounted on the central mechanism 300, and the central mechanism 300 is used to drive the clamping mechanism 200 to open and close axially; when the clamping mechanism 200 is in the open state, when the first limiting part 400 and the second limiting part 500, the first limiting matching part 211 and the first limiting protrusion 121, and the second limiting matching part 221 and the second limiting protrusion 131 reach the limit of limiting matching, the clamping mechanism 200 is in the maximum open state at this time; when the clamping mechanism 200 is in the closed state, when the first limiting part 400 and the second limiting part 500, the first limiting matching part 211 and the first limiting protrusion 121, and the second limiting matching part 221 and the second limiting protrusion 131 are completely separated from limiting, the clamping mechanism 200 is in the minimum closed state; when the clamping mechanism 200 is in the minimum closed state, the distance between the ends of the first clamper 210 and the second clamper 220, which protrude into the mold cavity 100 through the opening 110, is smaller than the inner diameter of the opening of the finished bead.

In summary, the utility model relates to the technical field of rubber, and discloses a clamping device of a vulcanizing machine, which comprises: the tire bladder-free vulcanizing machine is designed by matching with a tire bladder-free vulcanizing process, a bladder in a central mechanism of a traditional vulcanizing machine is cancelled, the structure of the tire shaping vulcanizing machine is simplified, the original bladder changing time and mold warming time are saved, the opening rate of equipment is improved, the appearance quality problem of the tire caused by the bladder is avoided, the tire production cost, the labor intensity and the shutdown rate are reduced, and the tire vulcanization production efficiency is improved.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A vulcanizer clamping apparatus comprising: a mold cavity, a clamping mechanism and a central mechanism;

an opening part is formed in one end of the mold cavity, the clamping mechanism corresponds to the opening part in position, and one end of the clamping mechanism extends into the cavity in the mold cavity through the opening part and forms the outer contour of the tire bead opening of the tire with the inner side wall of the opening part of the mold cavity;

the other end of the clamping mechanism is movably connected with the central mechanism, and the central mechanism moves axially to drive the clamping mechanism to open or close.

2. The vulcanizer clamping apparatus of claim 1, wherein said mold cavity comprises a first side plate and a second side plate symmetrically disposed to form side walls of both sides of the mold cavity, and a mold end cap having both ends connected to the first side plate and the second side plate, respectively;

the first side plate, the second side plate and the mold end cover form an inner space of the mold cavity, and the opening parts are formed at the opening ends of the connection back sides of the first side plate and the second side plate and the mold end cover;

the first side plate and the second side plate are used for forming the external contour of the side wall part of the tire, the opening part is used for forming the external contour of the bead opening of the tire, the side, facing the inner space of the mold cavity, of the mold end cover is provided with a pattern block, and the pattern block is used for forming the tire pattern of the crown part of the tire.

3. The vulcanizer clamping apparatus as set forth in claim 2, wherein said clamping mechanism comprises a movable link and first and second clamps which are provided at said opening portion and are symmetrical to each other, one end of said first and second clamps extending into the inner space of said mold cavity through said opening portion;

the middle positions of the first clamp holder and the second clamp holder are respectively and rotatably arranged at two ends of the movable connecting rod.

4. The vulcanizer clamping apparatus as set forth in claim 3, wherein said center mechanism comprises a piston rod and a first movable portion and a second movable portion fixedly mounted on said piston rod, respectively;

one end of the first clamp holder and one end of the second clamp holder are respectively and rotatably hinged to the first movable part and the second movable part, and the first movable part and the second movable part move along with the axial direction of the piston rod to drive the first clamp holder and the second clamp holder to open and close at the opening part relative to the first side plate and the second side plate.

5. The vulcanizer clamping apparatus as set forth in claim 4, wherein a hinge of said second clamp to said second movable portion is provided adjacent to said opening portion;

6. The vulcanizer clamping apparatus as set forth in claim 3, wherein said first side plate and said second side plate are respectively provided with a first limit projection and a second limit projection at said opening portion, and said first holder and said second holder are respectively provided with a first limit engagement portion and a second limit engagement portion at positions corresponding to said first limit projection and said second limit projection;