CN210510281U

CN210510281U - Rotary sealing device for molding drum case

Info

Publication number: CN210510281U
Application number: CN201921556968.7U
Authority: CN
Inventors: 张晓辰; 平律
Original assignee: TIANJIN SAIXIANG ELECTROMECHANICAL ENGINEERING CO LTD
Current assignee: TIANJIN SAIXIANG ELECTROMECHANICAL ENGINEERING CO LTD
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-05-12
Anticipated expiration: 2029-09-18

Abstract

The utility model discloses a rotatory sealing device of forming drum machine case, including quick-witted case main shaft, inner circle and a plurality of branch gas piece, quick-witted case main shaft, inner circle and branch gas piece radially are cyclic annular from outer to interior cover in proper order respectively and establish, be equipped with a sealing ring between the adjacent branch gas piece, radially seted up a plurality of exhaust holes on the sealing ring, by quick-witted case main shaft, inner circle to dividing run through in the gas piece in proper order and seted up first air feed channel, set up the second air feed channel for the forming drum air feed along the axial in the quick-witted case main shaft, first air feed channel and second air feed channel intercommunication. The utility model discloses, the design has increased the rotary seal device of exhaust hole structure, has avoided the whole emergence of equipment to leap up gas when rotary seal to every divides the gas piece can try gas, pressurize alone, has improved the whole success rate of once assembling of equipment, trying gas greatly.

Description

Rotary sealing device for molding drum case

Technical Field

The utility model relates to a tire building drum, concretely relates to building drum machine case rotary seal device.

Background

The tire building drum is a device for compounding a belt-shaped rubber material and a steel ring to form a tire body, the conventional building drum case rotary sealing device generally adopts a working structure of ten-way air distribution blocks, the ten-way air distribution blocks are integrally connected through 10 screw rods, and after the connection is finished, the static sealing performance of the air distribution blocks is tested one by one.

However, in the actual installation process, the problem of air leakage of individual gas distribution blocks is likely to occur after the gas distribution blocks are integrally connected, at the moment, 10 gas distribution blocks need to be completely disassembled and then the sealing rings need to be installed again, the whole process is time-consuming, and the success rate of assembly and gas testing is low.

To sum up, need one kind at present and can effectively avoid dividing leaping up gas between the gas piece, rotary seal's stability is better, can effectively improve the assembly, try the novel forming drum case rotary seal device of gas success rate.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that current forming drum machine case rotary seal device divides and easily leaps up gas between the gas piece, the lower problem of assembly, examination gas success rate.

In order to solve the technical problem, the utility model provides an adopted technical scheme provides a forming drum case rotary sealing device, including quick-witted case main shaft, inner circle and a plurality of branch gas piece, quick-witted case main shaft, inner circle and branch gas piece radially are cyclic annular from outer to interior cover in proper order respectively and establish, each divide the gas piece in the axial parallel to lean on arranging, adjacent divide and be equipped with a sealing ring between the gas piece, radially having seted up a plurality of exhaust holes on the sealing ring, by quick-witted case main shaft, inner circle extremely run through in dividing the gas piece in proper order and seted up first air feed channel, first air feed channel radially arranges, set up the second air feed channel for the forming drum air feed along the axial in the quick-witted case main shaft, first air feed channel with second air feed channel intercommunication.

In the above scheme, the inner side wall of the gas distribution block is provided with a ring groove, and the ring groove is arranged towards the outer ring surface of the sealing ring.

In the above scheme, the inner ring surface of the sealing ring is arranged adjacent to the outer ring surface of the inner ring, the left side end surface and the right side end surface of each gas distribution block are respectively provided with a step surface in a same shape in an integrated manner, and each sealing ring is arranged between the inner step surfaces of two adjacent gas distribution blocks.

In the above scheme, each air distribution block is provided with two sets of the first air supply channels, and the two sets of the first air supply channels are symmetrically arranged along the axis of the air distribution block respectively.

In the scheme, the eight exhaust holes are radially and uniformly arranged at intervals around the axis of the sealing ring.

In the scheme, two adjacent gas distribution blocks are connected through screws.

In the above scheme, a first sealing ring is arranged between the inner ring and the gas distribution block, and the first sealing ring is an L-shaped sealing ring.

In the scheme, the left side end face and the right side end face of each sealing ring are respectively and symmetrically abutted to and provided with one first sealing ring.

In the above scheme, a plurality of second sealing rings are sequentially arranged between the main shaft of the case and the inner ring, and the second sealing rings are O-shaped sealing rings.

In the above scheme, one end of the main shaft of the case is detachably connected with a plug for sealing the second air supply channel.

The utility model discloses, the design has increased the rotary seal device of exhaust hole structure, has avoided the whole emergence of equipment to leap up gas when rotary seal to every divides the gas piece can try gas, pressurize alone, has improved the whole success rate of once assembling of equipment, trying gas greatly.

Drawings

FIG. 1 is a schematic view of the overall middle-cut structure of the present invention;

FIG. 2 is an enlarged schematic view of the right portion of FIG. 1;

FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

fig. 5 is an enlarged schematic view of a portion C in fig. 2.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

The utility model discloses a rotary sealing device for a molding drum case, which can be realized by the technical personnel in the field by referring to the contents and properly improving the technological parameters. It is expressly noted that all such similar substitutes and modifications apparent to those skilled in the art are deemed to be included in the invention and it is apparent to those skilled in the art that the inventive technique can be practiced and applied by modifying or appropriately combining the teachings herein without departing from the spirit and scope of the invention.

In the present application, unless otherwise specified, scientific and technical terms used herein have the meanings as commonly understood by one of ordinary skill in the art.

The ten-way air distribution blocks of the rotary sealing device of the existing forming drum case are integrally connected by 10 screw rods, and after the connection is finished, the static sealing performance of each air distribution block is tested one by one.

However, in the actual installation process, the problem of air leakage of individual air distribution blocks is likely to occur after the air distribution blocks are integrally connected, at the moment, 10 air distribution blocks are required to be completely disassembled, then the sealing ring is installed again, and the operation process is complicated and time-consuming.

As shown in fig. 1 to 5, the utility model provides a rotatory sealing device of forming drum machine case, including quick-witted case main shaft 2, inner circle 6 and a plurality of branch gas piece 1, quick-witted case main shaft 2, inner circle 6 and branch gas piece 1 are cyclic annular from outer to interior structure of establishing of overlapping in proper order respectively in footpath, and wherein, quick-witted case main shaft 2, inner circle 6 and a plurality of material of dividing gas piece 1 can choose for use all kinds of materials among the prior art according to specific user demand.

Each divides gas piece 1 parallel support in proper order to arrange in the axial, the utility model provides a divide the preferred adoption 10 of the quantity of gas piece 1 to adjacent branch is equipped with a sealing ring 3 between the gas piece 1, and the material of sealing ring 3 also can choose for use all kinds of materials among the prior art according to specific user demand.

The utility model discloses an innovation point lies in: a plurality of exhaust holes 9 have been seted up along radial on every sealing ring 3, compare with prior art, the utility model discloses in the structural design who has increased exhaust hole 9 can effectively avoid dividing the gas that leaps up between the gas piece, that is to say that avoided the whole emergence of equipment when rotary seal leap up gas, consequently can say that improved equipment rotary seal's stability by a wide margin. For example, in fig. 2, when the L-shaped sealing ring 4 is damaged, gas can enter the adjacent air cavity after passing through the sealing ring from the current air cavity, and the conventional product may cause malfunction of the forming drum due to lack of a related protection structure, thereby affecting normal production. In the application, when the sealing ring is worn, gas can be exhausted to the atmosphere through the exhaust hole 9 on the sealing ring 3 in fig. 5 and the annular groove 11, so that the gas supply of the rotary seal which can be still stable can be ensured until the next maintenance period when the sealing ring is slightly worn without influencing the normal production.

Furthermore, as shown in fig. 5, the specific structure of the middle sealing ring 3 of the present invention is: an annular groove 11 is respectively formed in the inner side wall of each air distribution block 1, the annular grooves 11 are arranged towards the direction of the outer annular surface of the sealing ring 3 in a design mode, the annular grooves 11 are matched with the exhaust holes 9 to effectively exhaust air, air leaping among the air distribution blocks is prevented, the exhaust holes 9 are eight and are radially arranged around the axis of the sealing ring 3 at uniform intervals in sequence, and therefore the exhaust effect is more uniform and stable.

The left side end face and the right side end face of each gas distribution block 1 are respectively provided with a step face in an integrated forming mode, as shown in figure 2, so that the section of each gas distribution block 1 looks like a roughly zigzag structure, as shown in figures 3 and 4, the section views are respectively formed along the parallel step faces of two different positions of the gas distribution block 1, and therefore each sealing ring 3 can be arranged between the inner step faces of two adjacent gas distribution blocks 1 for reasonable fixed installation layout, and meanwhile, the inner ring face of each sealing ring 3 is arranged adjacent to the outer ring face of the inner ring 6, and therefore an integral rotary sealing structure is formed.

The utility model discloses an another innovation point lies in: two adjacent gas piece 1 of branch are connected through screw 12 between, and for prior art's overall connection structure, the utility model discloses an exclusive use screw 12 between the adjacent gas piece 1 of branch is connected, can be convenient for in the in-service use process, effectively improve equipment rotary seal once assembles, the successful probability of gas testing, has reduced later maintenance's cost by a wide margin. For example, 10 gas distribution blocks 1 in fig. 2 are respectively set to be numbers 1 to 10 from left to right, and when the connection between the number 1 gas distribution block and the number 2 gas distribution block is completed, the static sealing performance of the number 1 gas distribution block can be tested; by analogy, each component gas block is mounted after gas testing and pressure maintaining are successful, so that the probability of successful gas testing and one-time assembly of the rotary seal is greatly improved, and the cost of later maintenance is reduced.

The utility model discloses the concrete design structure of well equipment air feed circuit does: a first air supply channel 8 is sequentially formed from the case main shaft 2, the inner ring 6 to the air distribution block 1 in a penetrating manner, as shown in fig. 4, the first air supply channel 8 can automatically form a passage or a closed circuit along with the change of the mutual rotating position relation of the case main shaft 2, the inner ring 6 and the air distribution block 1, the first air supply channel 8 is preferably arranged along the radial direction, each air distribution block 1 is preferably provided with two groups of first air supply channels 8, and the two groups of first air supply channels 8 are respectively arranged along the axial center of the air distribution block 1 symmetrically, so that stable and efficient air supply is ensured.

A second air supply channel 10 for directly supplying air to the forming drum is axially arranged in the case main shaft 2, and the first air supply channel 8 is vertically communicated with the second air supply channel 1. A preferred flow path for the supply of gas can be designed as follows: as the direction of the arrows in fig. 1 represents the gas supply direction, the gas source is introduced from the gas distribution block 1, passes through the inner ring 6, enters the machine case spindle 2 and supplies gas to the building drum along the second gas supply channel 10.

Further preferably, in order to further improve the overall sealing performance between each part of the equipment, a first sealing ring 4 is arranged between the inner ring 6 and the gas distribution block 1, the first sealing ring 4 is preferably an L-shaped sealing ring, and one first sealing ring 4 is respectively and symmetrically arranged on the left side end face and the right side end face of each sealing ring 3 in an abutting mode. A plurality of second sealing rings 5 are sequentially arranged between the case main shaft 2 and the inner ring 6, the second sealing rings 5 are arranged in parallel and are uniformly distributed at intervals along the axial direction of the case main shaft 2, and the second sealing rings 5 are preferably O-shaped sealing rings for static sealing. One end of the case main shaft 2 is detachably connected with a plug 7 for sealing the second air supply channel 10, and the structural shape of the plug 7 can also be various suitable models in the prior art according to specific use requirements.

The present invention is not limited to the above best mode, and any person should learn the structural changes made under the teaching of the present invention, all with the present invention has the same or similar technical solution, all fall into the protection scope of the present invention.

Claims

1. Rotary sealing device of molding drum case, including quick-witted case main shaft, inner circle and a plurality of gas distribution piece, its characterized in that, quick-witted case main shaft, inner circle and gas distribution piece radially are cyclic annular from outer to interior cover in proper order respectively and establish each gas distribution piece is parallel in proper order in the axial and supports to lean on arranging, and is adjacent be equipped with a sealing ring between the gas distribution piece, radially seted up a plurality of exhaust holes on the sealing ring, by quick-witted case main shaft, inner circle extremely run through in the gas distribution piece in proper order and seted up first air feed channel, first air feed channel radially arranges, set up the second air feed channel for the molding drum air feed air along the axial in the quick-witted case main shaft, first air feed channel with second air feed channel intercommunication.

2. The rotary sealing device for a molding drum cabinet according to claim 1, wherein the inner side wall of the gas distribution block is provided with a ring groove, and the ring groove is arranged towards the outer annular surface of the sealing ring.

3. The rotary sealing device for a building drum chassis according to claim 1, wherein an inner ring surface of the sealing ring is disposed adjacent to an outer ring surface of the inner ring, left and right side end surfaces of each of the gas distribution blocks are respectively integrally formed with a step surface having a uniform shape, and each of the sealing rings is disposed between inner step surfaces of two adjacent gas distribution blocks.

4. The rotary sealing device for molding drum cabinets according to claim 1, wherein each of said air distribution blocks is provided with two sets of said first air supply passages, and said two sets of said first air supply passages are respectively arranged symmetrically along the axial center of said air distribution block.

5. The building drum chassis rotary seal device of claim 1, wherein the exhaust holes have eight and are radially and uniformly spaced around the axis of the seal ring.

6. The building drum chassis rotary seal device of claim 1, wherein adjacent two of the air distribution blocks are connected by screws.

7. The building drum chassis rotary seal device of claim 1, wherein a first seal ring is disposed between the inner ring and the air distribution block, and the first seal ring is an L-shaped seal ring.

8. The building drum chassis rotary seal device according to claim 7, wherein one of said first seal rings is disposed symmetrically against each of left and right side end faces of each of said seal rings.

9. The building drum chassis rotary seal device of claim 1, wherein a plurality of second seal rings are sequentially disposed between the chassis spindle and the inner ring, and the second seal rings are O-ring seals.

10. The building drum chassis rotary seal apparatus of claim 1, wherein a plug sealing the second air supply channel is removably attached to one end of the chassis spindle.