CN115815893A - Device for flange welding of steam chamber on vulcanizing machine - Google Patents

Abstract

The invention relates to the technical field of steam flange welding on vulcanizers, in particular to a device for flange welding of steam chambers on vulcanizers; compared with the prior art, the upper steam chamber is directly leaned against the platform to weld the flanges , the present invention only needs to hoist and fix the upper steam chamber on the positioning mechanism once, and no longer needs multiple hoisting and positioning adjustments, greatly improving work efficiency, and it is convenient to accurately adjust the position of each flange to the most suitable welding position through the rotating disc For the position of operation, by fixing the upper steam chamber on the positioning mechanism in the present invention, the risk of slipping of the upper steam chamber during operation is avoided, and the safety of operation is improved. By setting two telescopic workbenches opposite to each other on both sides of the support workbench, it is convenient to support the operator, so that the operator can weld the inner and outer welds of the flange hole in a comfortable position, which further improves the operating efficiency. safety and comfort.

Description

Apparatus for flange welding of steam chambers on vulcanizers

technical field

The invention relates to the technical field of steam flange welding on a vulcanizing machine, in particular to a device for flange welding of a steam chamber on a vulcanizing machine.

Background technique

The steam chamber of the vulcanizer is a pressure-bearing device, which belongs to the category of pressure vessels. In the process of making the upper steam chamber, various flanges need to be welded. Since the flange is welded on the oval head and its surface is arc-shaped, Therefore it is extremely difficult for welders to weld the flange of the upper steam chamber.

Referring to Figure 1, in the prior art, when welding the flange of the upper steam chamber, the upper steam chamber leans against the platform for welding, which has the problems of safety risk and low efficiency of repeated hoisting to change the welding position. Welding different flanges requires hoisting and changing positions; when welding the same flange, the operator needs to weld at different positions. When welding the outer weld seam of the flange, the operator stands on the platform to weld; The operator stands in the middle of the flange and performs welding work.

The upper steam chamber generally has 4-6 flanges. In order to ensure the welding quality, the welding area of the flange is generally required to be placed horizontally as a whole. Therefore, when the upper steam chamber is hoisted to a positioning angle and leans against a positioning angle, only one flange can be welded. For the flange hole, when welding other flange holes, it is necessary to hoist the upper steam chamber to the ground, adjust the position of the flange to be welded, and lean on the platform again.

In the above flange welding method of the upper steam chamber of the vulcanizing machine, there are specific problems as follows: the upper steam chamber has the risk of slipping from the leaning platform, because the operator needs to stand in the middle of the flange for welding when welding the inner side of the flange. The slipping of the upper steam chamber also poses a safety hazard for the operator during operation, and every time a flange hole is welded, the upper steam chamber needs to be hoisted once, and the leaning position of the upper steam chamber needs to be precisely adjusted each time to ensure The accuracy of welding, this method is obviously difficult to ensure that each leaning makes the corresponding flange holes to be welded at the same inclination angle, and each adjustment requires a lot of man-hours, resulting in low work efficiency.

Contents of the invention

The technical problem to be solved by the present invention is: how to improve the efficiency and precision of welding the inner and outer weld seams of each flange hole in the upper steam chamber of the vulcanizing machine, and how to prevent the upper steam chamber from slipping during the welding process and improve the safety of the operator during the welding process. sex.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A device used for flange welding of a steam chamber on a vulcanizing machine. The steam chamber on a vulcanizing machine includes a main body and a flange hole. Shaped convex edge, a plurality of elliptical flange holes are arranged on the surface of the main body;

Including rotary support table and telescopic table;

The rotary support workbench includes a bracket, a rotary table and a positioning mechanism;

The turntable is rotatably connected to the support, and the axis of the turntable is inclined to the vertical direction;

The positioning mechanism is arranged on the upper part of the turntable, and the positioning mechanism is used to position and lock the convex edge of the main body on the turntable so that the axis of the main body coincides with the axis of the turntable;

The number of the telescopic workbench is 2, and the two telescopic workbenches are respectively arranged oppositely on both sides of the supporting workbench, and the telescopic workbench includes a fixed platform and a movable platform slidingly connected to the fixed platform, The vertical plane where the sliding direction of each movable platform is located is parallel to the vertical plane where the axis of the rotary table is located.

Further, in the above-mentioned device structure for flange welding of the steam chamber on the vulcanizer, the positioning mechanism includes a plurality of limit guide rails distributed in a circular array, each of the limit guide rails intersects the axis of the rotary table and vertical;

It also includes a limit seat and a fastener, the limit seat is slidably connected to the limit guide rail, the fastener is connected between the limit seat and the limit guide rail, and is used to place the limit seat in the limit position. Lock on the rail.

Further, in the above-mentioned device structure for flange welding of the steam chamber on the vulcanizer, the positioning mechanism includes a plurality of support bars distributed in a circular array, each of the support bars intersects and is perpendicular to the axis of the rotary table, The limiting guide rails are distributed alternately with the supporting bars.

Further, in the above-mentioned device structure for flange welding of the steam chamber on the vulcanizing machine, the limit seat includes a first connecting plate, a second connecting plate and a third connecting plate which are vertically connected to each other in turn, and the first connecting plate Bolt holes are provided, and a female angle for the upper limit of the convex edge is formed between the second connecting plate and the third connecting plate;

The cross-section of the limiting guide rail is a narrow T-shape on the lower paragraph, the fastener is a bolt, and the head of the bolt is clamped on the T-shaped wide part of the limiting guide rail, and the thread of the bolt The part passes through the T-shaped narrow part of the limiting guide rail and the bolt hole of the first connecting plate in turn, and is locked by a nut.

Further, in the above-mentioned device structure for flange welding of the steam chamber on the vulcanizer, the positioning mechanism includes a circular connecting part, and the circular connecting part is provided with a plurality of first screw holes distributed in a circular array, and the rotating A second screw hole corresponding to the first screw hole is provided on the table, and the circular connecting part is fixedly connected to the rotary table through the first screw hole and the second screw hole by a screw; One end of the limiting guide rail is connected to the ring connecting portion.

Further, in the above device structure for flange welding of the steam chamber on the vulcanizer, the height of the movable platform is higher than the highest point of the positioning mechanism.

Further, in the above-mentioned device structure for flange welding of the steam chamber on the vulcanizing machine, the two sides of the fixed platform are provided with limiting mounting seats, and the limiting mounting seats are fixedly connected to the limiting shaft, and the axial direction of the limiting is In the horizontal direction parallel to the moving direction of the movable platform, the two sides of the movable platform are provided with limiting grooves arranged along the moving direction of the movable platform, and the limiting shaft is connected with a roller through a bearing, and the roller and the limiting Groove roll fit connection.

Further, in the above-mentioned device structure for flange welding of the upper steam chamber of the vulcanizing machine, the center of the bottom of the movable platform is provided with a first limit stopper, and the center of the upper surface of the fixed platform is provided with two second limit stops block, and the two second limit stops are arranged in a line along the moving direction of the movable platform, and are used to cooperate with the first limit stop to limit the moving stroke of the movable platform.

Further, in the above-mentioned device structure for flange welding of the steam chamber on the vulcanizer, the movable platform is provided with a first limiting hole, and the fixed platform is provided with a plurality of second limiting holes arranged in a line along the moving direction of the movable platform. Position holes, the first limit hole and the second limit hole are used for screws to pass through to limit the relative displacement of the movable platform and the fixed platform.

Further, in the above-mentioned device structure for flange welding of the steam chamber on the vulcanizing machine, fences are respectively provided on both sides of the movable platform, and connecting ears are provided on the fence of the movable platform toward the end of the rotary support workbench, and the two An iron chain is detachably connected between the connecting ears through a movable buckle.

The beneficial effect of the present invention is that: compared with the prior art in which the upper steam chamber is directly leaned against the platform to weld the flange, the present invention only needs to hoist and fix the upper steam chamber on the positioning mechanism once, and no more Hoisting, adjusting positioning, greatly improving work efficiency, and the position of each flange can be precisely adjusted to the most suitable position for welding operation through the rotating disc. By fixing the upper steam chamber on the positioning mechanism in the present invention, the operation process is avoided. The risk of slipping in the middle and upper steam chamber improves the safety of operation. By setting two telescopic workbenches opposite to each other on both sides of the support workbench, it is convenient to support the operator, so that the operator can weld the inner and outer welds of the flange hole in a comfortable position, which further improves the operating efficiency. safety and comfort.

Description of drawings

Fig. 1 is a structural schematic view of the prior art when the upper steam chamber leans against the platform to weld the flange;

Fig. 2 is a structural schematic diagram of a device for flange welding of a steam chamber on a vulcanizing machine according to a specific embodiment of the present invention;

Fig. 3 is a front view of a rotary support workbench of a device for flange welding of a steam chamber on a vulcanizing machine according to a specific embodiment of the present invention;

Fig. 4 is an enlarged view of part A of Fig. 3;

Fig. 5 is a front view of a telescopic workbench of a device for flange welding of a steam chamber on a vulcanizing machine according to a specific embodiment of the present invention;

Fig. 6 is an enlarged view of part B of Fig. 5;

Fig. 7 is a side view of a partial structure of a telescopic workbench of a device for flange welding of a steam chamber on a vulcanizing machine according to a specific embodiment of the present invention;

Fig. 8 is a top view of a partial structure of a telescopic workbench of a device for flange welding of a steam chamber on a vulcanizing machine according to a specific embodiment of the present invention;

Fig. 9 is an axial view of a positioning mechanism of a device for flange welding of a steam chamber on a vulcanizing machine according to a specific embodiment of the present invention;

Fig. 10 is a front view of a position-limiting seat of a device for flange welding of a steam chamber on a vulcanizing machine according to a specific embodiment of the present invention;

Fig. 11 is a top view of a position-limiting seat of a device for flange welding of a steam chamber on a vulcanizing machine according to a specific embodiment of the present invention;

Label description:

1. Upper steam chamber; 11. Main body; 12. Flange hole; 13. Convex edge;

2. Rotary support table; 21. Bracket; 211. Baffle plate; 22. Rotary table; 221. Second screw hole; 23. Positioning mechanism; 231. Limiting guide rail; 232. Limiting seat; 2321. First connection Plate; 23211, bolt hole; 2322, second connecting plate; 2323, third connecting plate; 2324, reinforcing rib; 233, fastener; 234, support bar; 235, ring connecting part; 2351, first screw hole ; 24, cycloid reducer motor; 25, small gear; 26, large gear;

3. Telescopic workbench; 31. Fixed platform; 311. Limit mounting seat; 312. Limit shaft; 313. Roller; 314. Second limit block; 315. Second limit hole; 32. Movable platform; 321, the limit slot; 322, the first limit block; 323, the first limit hole; 324, the fence; 325, the connecting ear; 326, the iron chain.

Detailed ways

In order to describe the technical content, achieved goals and effects of the present invention in detail, the following descriptions will be made in conjunction with the embodiments and accompanying drawings.

Please refer to Fig. 1 to Fig. 11, the present invention relates to a device for flange welding of the upper steam chamber 1 of the vulcanizing machine. The upper steam chamber 1 of the vulcanizing machine includes a main body 11 and a flange hole 12. body, the opening end of the main body 11 is provided with an outwardly extending annular convex edge 13, and a plurality of elliptical flange holes 12 are arranged on the surface of the main body 11;

Including rotary support workbench 2 and telescopic workbench 3;

The rotary support workbench 2 includes a support 21, a rotary table 22 and a positioning mechanism 23;

The turntable 22 is rotatably connected to the bracket 21, and the axis of the turntable 22 is inclined to the vertical direction;

The positioning mechanism 23 is arranged on the upper part of the turntable 22, and the positioning mechanism 23 is used for positioning and locking the convex edge 13 of the main body 11 on the turntable 22, so that the axis of the main body 11 coincides with the axis of the turntable 22;

The number of the telescopic workbench 3 is 2, and the two telescopic workbenches 3 are arranged oppositely on both sides of the support workbench respectively. The telescopic workbench 3 includes a fixed platform 31 and is slidably connected to the fixed platform. 31 of the movable platform 32, the vertical plane where the sliding direction of each of the movable platforms 32 is parallel to the vertical plane where the axis of the rotary table 22 is located.

In the above embodiments, preferably, the included angle between the rotating table 22 and the horizontal plane is 35 degrees, that is, the included angle between the axial direction of the rotating table 22 and the horizontal plane is 55 degrees.

In above embodiment, with reference to Fig. 2 and Fig. 3, described support 21 is connected with cycloid reduction motor 24, pinion 25 and bull gear 26, and described pinion 25 is connected with the output shaft of described cycloid reduction motor 24 , the large gear 26 is coaxially connected to the rotary table 22, and the pinion gear 25 meshes with the large gear 26, thereby driving the rotary table through the transmission of the small gear 25 and the large gear 26 through the cycloid reduction motor 24 22 turns.

The working principle of the above embodiment is explained: After the main body 11 of the upper steam chamber 1 of the flange to be welded is positioned and locked on the positioning mechanism 23 by a crane, the main body 11 of the upper steam chamber 1 and the rotary table 22 are concentric. The rotation of the rotary table 22 drives the main body 11 of the upper steam chamber 1 connected to the positioning mechanism 23 to rotate, so that one of the flange holes 12 of the upper steam chamber 1 faces upwards, and the operator can walk up to the fixed platform 31 through the stairs. The position of the flange hole 12 adjusts the distance between the movable platform 32 and the fixed platform 31, so that the operator can easily weld the inner or outer weld of the flange hole 12 while standing on the movable platform 32. The table 3 is provided with two, one is used to provide support for the operator when welding the weld seam inside the flange hole 12, and the other is used to provide support for the operator when welding the weld seam outside the flange hole 12. After the welding of the inner and outer weld seams of a flange hole 12 is completed, the rotating table 22 is driven to rotate an angle so that the next flange hole 12 to be welded faces upwards, and the above operations are repeated to efficiently complete all the flange holes 12 Welding of inner and outer seams.

In the above embodiments, compared with the prior art where the upper steam chamber is directly leaned against the platform to weld the flange, the present invention only needs to lift and fix the upper steam chamber 1 on the positioning mechanism 23 once, and no more hoisting, adjusting positioning, greatly improving work efficiency, and the position of each flange can be precisely adjusted to the most suitable position for welding operation through the rotating disk. By fixing the upper steam chamber 1 on the positioning mechanism 23 in the present invention, avoiding The risk of the upper steam chamber 1 slipping during the operation improves the safety of the operation. By arranging the two telescopic workbenches 3 oppositely on both sides of the support workbench, it is convenient to support the operator, so that the operator can weld the inner and outer welds of the flange hole 12 in a comfortable position, further improving the Operating safety and comfort.

As an optional implementation, the positioning mechanism 23 includes a plurality of limit guide rails 231 distributed in a circular array, and each limit guide rail 231 intersects and is perpendicular to the axis of the rotary table 22;

It also includes a limit seat 232 and a fastener 233, the limit seat 232 is slidably connected to the limit guide rail 231, and the fastener 233 is connected between the limit seat 232 and the limit guide rail 231 for Lock the limit seat 232 on the limit guide rail 231 .

In the above embodiments, the function of the limit seat 232, the fastener 233 and the limit guide rail 231 is to adapt to the fixation of the steam chamber 1 on the positioning mechanism 23 of various vulcanizers of different specifications. In specific embodiments, the main application It is used in the flange welding work of the steam chamber 1 on the 88-122 inch vulcanizer. By adjusting the position of each limit seat 232 on the limit guide rail 231, the clamping of the convex edge 13 of the steam chamber 1 on the vulcanizer with different specifications can be realized. Each limit seat 232 is fixed on the limit guide rail 231 by a fastener 233 , so that the upper steam chamber 1 is fixed at the coaxial center of the positioning mechanism 23 .

As an optional implementation, the positioning mechanism 23 includes a plurality of support bars 234 distributed in a circular array, each of the support bars 234 intersects and is perpendicular to the axis of the rotary table 22, and the position limiting The guide rails 231 and the support bars 234 are distributed alternately.

In the above embodiment, the function of the support bar 234 is to provide auxiliary support for the upper steam chamber 1, and this part is distributed alternately with the limit guide rail 231 and is distributed in a circular array together. Referring to FIG. 9, the adjacent limit guide rail 231 and the support bar 234 can also be reinforced and connected by reinforcing strips to improve the overall structural strength.

As an optional implementation, the limit seat 232 includes a first connecting plate 2321, a second connecting plate 2322 and a third connecting plate 2323 which are vertically connected in turn, and the first connecting plate 2321 is provided with bolts A hole 23211, a female corner for the upper edge of the convex edge 13 is formed between the second connecting plate 2322 and the third connecting plate 2323;

The cross-section of the limiting guide rail 231 is a narrow T-shape on the lower section, the fastener 233 is a bolt, and the head of the bolt is clamped on the T-shaped wide part of the limiting guide rail 231. The threaded portion of the bolt passes through the T-shaped narrow portion of the limiting guide rail 231 and the bolt hole 23211 of the first connecting plate 2321 in sequence, and is locked by a nut.

In the above embodiment, referring to Fig. 4, Fig. 10 and Fig. 11, since the limit seat 232 can be easily separated from the limit guide rail 231, when the upper steam chamber 1 is fixed on the positioning mechanism 23, the upper steam chamber 1 can be calculated in advance. The convex edge 13 radius, and then one of the limit seats 232 is pre-fixed on a limit guide rail 231, and then the limit seat 232 is moved to the lowest end by rotating the rotary table 22, and then the upper steam chamber 1 hoisting device The positioning mechanism 23 clamps the lower edge of the protruding edge 13 at the inner corner of the limit seat 232 for positioning and adjustment until the upper steam chamber 1 and the rotary table 22 are coaxial, and then passes through other limit seats respectively. 232 fixes the convex edge 13. In the specific structure of fixing the upper steam chamber 1 by the limit seat 232, the convex edge of the upper steam chamber 1 is stuck on the convex edge of the upper steam chamber 1 by using the female angle formed between the second connecting plate 2322 and the third connecting plate 2323. 13 to limit its position, the limit seat 232 is fixed on the limit guide rail 231 by bolts and nuts, and the limit seat 232 and the fastener 233 have the advantages of simple structure and simple and efficient connection operation.

In the above embodiment, the bolt hole 23211 is a waist hole, which is beneficial to fine-tune the connection position of the limit seat 232 on the limit guide rail 231. In order to reinforce the limit seat 232, the first limit plate and the second limit plate Triangular reinforcing ribs 2324 are respectively welded on both sides to increase the structural strength of the limiting seat 232 .

As an optional implementation, the positioning mechanism 23 includes a circular connecting portion 235, the circular connecting portion 235 is provided with a plurality of first screw holes 2351 distributed in a circular array, and the rotary table 22 is provided with There are second screw holes 221 corresponding to the first screw holes 2351 one by one, and the circular connecting portion is fixedly connected to the rotary table 22 through the first screw holes 2351 and the second screw holes 221 through screws; One end of the limiting guide rail 231 is connected to the ring connecting portion 235 . The above structure can improve the stability of the connection between the positioning mechanism 23 and the rotary table 22 and ensure coaxiality.

As an optional implementation manner, the height of the movable platform 32 is higher than the highest point of the positioning mechanism 23 . The effect of the above structure is to avoid interference between the upper steam chamber 1 fixed by the positioning mechanism 23 when the movable platform 32 stretches out and moves.

As an optional implementation, the bracket 21 is provided with a baffle 211 near the lowest point of the positioning mechanism 23 . The function of the baffle 211 is to play an auxiliary protective role. If the upper steam chamber 1 is not locked on the positioning mechanism 23 due to improper operation by the operator, causing the upper steam chamber 1 to slip, the baffle 211 can play a protective role and prevent The upper steam chamber 1 slipped further and caused damage.

As an optional embodiment, the two sides of the fixed platform 31 are provided with a limit installation seat 311, and the limit installation seat 311 is fixedly connected with a limit shaft 312, and the axial direction of the limit is the same as that of the movable platform 32. The moving direction parallel to the horizontal direction, the two sides of the movable platform 32 are provided with a limit groove 321 arranged along the moving direction of the movable platform 32, the limit shaft 312 is connected with a roller 313 through a bearing, and the roller 313 is connected to the movable platform 32. The limiting groove 321 is connected by rolling fit.

In the above embodiment, with reference to FIG. 7, the movable platform 32 can slide relative to the fixed platform 31 by using the rolling of the roller 313 in the limiting groove 321. In the actual solution, it can be manually pushed or an electric push rod The movable platform 32 is driven to move, and the specific driving method is not specifically limited here.

As an optional embodiment, the center of the bottom of the movable platform 32 is provided with a first limit stop 322, and the center of the upper surface of the fixed platform 31 is provided with two second limit stops 314, two The second limit stops 314 are arranged in a line along the moving direction of the movable platform 32 , and are used to cooperate with the first limit stops 322 to limit the moving stroke of the movable platform 32 .

As an optional embodiment, the movable platform 32 is provided with a first limiting hole 323, and the fixed platform 31 is provided with a plurality of second limiting holes 315 lined up along the moving direction of the movable platform 32, The first limiting hole 323 and the second limiting hole 315 are used for screws to pass through to limit the relative displacement between the movable platform 32 and the fixed platform 31 .

As an optional embodiment, fences 324 are respectively provided on both sides of the movable platform 32, and the fence 324 of the movable platform 32 is provided with a connecting ear 325 toward one end of the rotating support workbench 2. An iron chain 326 is detachably connected between the ears 325 through a movable buckle.

In the above embodiment, the two ends of the iron chain 326 are connected to the corresponding connecting ears 325 of the fences 324 on both sides through movable buckles, which can provide protection when the operator performs the welding operation on the flange hole 12 of the upper steam chamber 1, because the iron chain 326 It is flexible in disassembly and assembly, and has a bendable performance, which can provide the operator with more operating space.

The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent transformations made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in related technical fields, are all included in the same principle. Within the scope of patent protection of the present invention.

Claims (10)

1. The flange welding device for the upper steam chamber of the vulcanizing machine comprises a main body and flange holes, wherein the main body is in a revolving body shape, an annular convex edge extending outwards is arranged at the opening end of the main body, and a plurality of oval flange holes are formed in the surface of the main body;

the device is characterized by comprising a rotary supporting workbench and a telescopic workbench;

the rotary supporting working table comprises a bracket, a rotary table and a positioning mechanism;

the rotating platform is rotatably connected to the bracket, and the axis of the rotating platform is inclined to the vertical direction;

the positioning mechanism is arranged at the upper part of the rotating table and used for positioning and locking the convex edge of the main body on the rotating table to ensure that the axis of the main body is superposed with the axis of the rotating table;

the quantity of flexible workstation is 2, two flexible workstation sets up respectively in the both sides of supporting the workstation relatively, flexible workstation include fixed platform and sliding connection in fixed platform's movable platform, every the vertical plane at movable platform's slip direction place is parallel with the vertical plane at the axis place of revolving stage.

2. The apparatus of claim 1, wherein the positioning mechanism comprises a plurality of position-limiting guide rails distributed in a circumferential array, each position-limiting guide rail intersecting and perpendicular to the axis of the rotary table;

the limiting seat is connected between the limiting seat and the limiting guide rail in a sliding mode, and the fastening piece is used for locking the limiting seat on the limiting guide rail.

3. The apparatus of claim 2, wherein the positioning mechanism comprises a plurality of support bars distributed in a circumferential array, each support bar intersects and is perpendicular to the axis of the rotating table, and the limit rails are distributed in a staggered manner with the support bars.

4. The device for steam chamber flange welding on a vulcanizing machine as claimed in claim 2, wherein the limiting seat comprises a first connecting plate, a second connecting plate and a third connecting plate which are sequentially and vertically connected with each other, the first connecting plate is provided with a bolt hole, and an internal corner for limiting the upper edge of the convex edge is formed between the second connecting plate and the third connecting plate;

the cross section of the limiting guide rail is in a shape of a narrow T in the lower section, the fastener is a bolt, the head of the bolt is clamped in the T-shaped wide part of the limiting guide rail, and the thread part of the bolt sequentially penetrates through the T-shaped narrow part of the limiting guide rail and the bolt hole of the first connecting plate and is locked through a nut.

5. The device for steam chamber flange welding on a vulcanizing machine as claimed in claim 2, wherein the positioning mechanism comprises a circular ring connecting part, the circular ring connecting part is provided with a plurality of first screw holes distributed in a circumferential array, the rotary table is provided with second screw holes corresponding to the first screw holes one by one, and the circular ring connecting part is fixedly connected to the rotary table through the first screw holes and the second screw holes by screws; one end of the limiting guide rail is connected to the circular ring connecting part.

6. The apparatus for steam chamber flange welding on vulcanizer of claim 1, wherein said movable platform has a height higher than the highest point of said positioning mechanism.

7. The device for steam chamber flange welding on vulcanizing machine according to claim 1, wherein two sides of the fixed platform are provided with limiting installation seats, the limiting installation seats are fixedly connected with limiting shafts, the axial direction of the limiting shafts is the horizontal direction parallel to the moving direction of the movable platform, two sides of the movable platform are provided with limiting grooves arranged along the moving direction of the movable platform, the limiting shafts are connected with rollers through bearings, and the rollers are connected with the limiting grooves in a rolling fit manner.

8. The apparatus of claim 7, wherein the movable platform has a first limit stop at the center of the bottom, and the fixed platform has 2 second limit stops at the center of the top surface, and the 2 second limit stops are arranged in a row along the moving direction of the movable platform and are used for cooperating with the first limit stop to limit the moving stroke of the movable platform.

9. The apparatus of claim 7, wherein the movable platform is provided with a first position-limiting hole, the fixed platform is provided with a plurality of second position-limiting holes arranged in a row along the moving direction of the movable platform, and the first position-limiting hole and the second position-limiting hole are used for allowing a screw to pass through to limit the relative displacement of the movable platform and the fixed platform.

10. The device for steam chamber flange welding on a vulcanizing machine as claimed in claim 1, characterized in that rails are respectively arranged on two sides of the movable platform, one end of the rail of the movable platform, which faces the rotary supporting workbench, is provided with a connecting lug, and an iron chain is detachably connected between the two connecting lugs through a movable buckle.

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