CN103552175B - Tire vulcanization inner mold - Google Patents

Abstract

The invention relates to a tire vulcanization inner mold, which belongs to the field of tire production equipment. The piston rod is fixedly connected with the base, narrow tile side guides and wide tile side guides are alternately installed on the wedge surface of the base, the narrow tile side guides and the narrow tile side sliders fixed on the narrow drum tile bracket Cooperate, the wide tile side guide rail cooperates with the wide tile lateral slider fixed on the wide drum tile bracket, the piston rod is set with a limit plate, and the upper side of the limit plate is alternately equipped with narrow tile bottom sliders and wide tiles in the circumferential direction The bottom slider, the narrow tile bottom slider and the wide tile bottom slider cooperate with the narrow tile bottom guide rail and the wide tile bottom guide rail respectively fixed on the narrow drum tile support and the wide drum tile support. The invention adopts a mechanical mechanism to realize the radial expansion and contraction of the mold, and has high structural precision, which can fundamentally solve the problems of incomplete bladder expansion and structural asymmetry in the existing vulcanization process, can greatly increase the vulcanization pressure, and can carry out tire vulcanization for a long time. It solves the problem of short capsule life and frequent replacement in the original process.

Description

Tire vulcanization inner mold

technical field

The invention relates to the field of tire production equipment, in particular to a tire vulcanization inner mold.

Background technique

As we all know, the current process of tire vulcanization is to apply high-intensity vulcanization pressure to the green tire with the cooperation of the bladder and the outer mold, and at the same time transfer heat to the green tire by virtue of the high-temperature steam (or superheated water) inside the bladder and the mold. Under the action of such high heat pressure, a chemical cross-linking reaction occurs between the rubber material inside the green tire and the vulcanizing agent, and finally endows the finished tire with good mechanical properties and pattern appearance. The tire shaping vulcanizer is the special equipment for tire vulcanization that is widely used based on this process.

There are certain defects in the existing bladder vulcanization process. On the one hand, problems such as incomplete expansion of the bladder or asymmetrical structure after expansion may occur due to reasons such as viscose and unreasonable size design during the use of the bladder, resulting in uneven quality of the finished tire. On the other hand, the tire blank is affected by the processing accuracy and molding accuracy of the semi-finished rubber parts, resulting in uneven mass distribution. The vulcanization bladder is a flexible body, the pressure it can provide is low, and it cannot force the rubber material to achieve uniform mass distribution in the molten state through vulcanization. Uneven quality seriously affects the dynamic balance and uniformity of the tire, thereby greatly reducing the performance and life of the tire. Therefore, most tires made by the current vulcanization method need to be counterweighted.

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention provides a tire vulcanization inner mold, which replaces the vulcanization bladder on the central mechanism of the tire shaping vulcanizer, fundamentally solves the problems of incomplete expansion of the bladder and asymmetric structure in the original process, and can greatly Increase the vulcanization pressure and improve the distribution of tire rubber in the molten state, thereby improving the dynamic balance and uniformity of the finished tire.

The technical solution adopted by the present invention to solve the technical problem is: a tire vulcanization inner mold, which is characterized in that it includes a telescopic mechanism and a transmission mechanism, wherein the telescopic mechanism is mainly composed of a narrow drum tile telescopic mechanism and a wide drum tile telescopic mechanism, Narrow drum tile telescopic mechanism includes: narrow drum tile, narrow drum tile bracket; wide drum tile telescopic mechanism includes: wide drum tile, wide drum tile bracket; transmission mechanism includes: piston rod, end cover, clamp ring, base, limit Plate, narrow tile side slider, narrow tile side guide rail, wide tile side slider, wide tile side guide rail, wide tile bottom slider, wide tile bottom guide rail, narrow tile bottom slider, narrow tile bottom guide rail; The end cover is fixed to one end of the base, and is fixedly connected to the piston rod through the clamp ring and the connecting bolt. On the wedge-shaped surface of the base, narrow tile side guides and wide tile side guides are alternately installed. Cooperate with the narrow tile lateral slider on the narrow drum tile bracket, the wide tile side guide rail cooperates with the wide tile lateral slider fixed on the wide drum tile bracket, the piston rod is set with a limit plate, and the upper side of the limit plate Narrow tile bottom sliders and wide tile bottom sliders are installed alternately in the circumferential direction, and the narrow tile bottom sliders and wide tile bottom sliders are respectively connected with narrow tile bottom guide rails and wide tile brackets fixed on the narrow drum tile bracket and the wide drum tile bracket. Bottom rail fit.

The present invention can also be realized by the following measures: wide drum tiles and narrow drum tiles are arranged alternately along the circumferential direction, when all drum tiles are in the expanded position, the outer diameter of the inner mold is equal to the inner contour diameter of the finished tire, and the outer contour curve is the same as that of the finished tire The inner contour curve of the tire is consistent.

The beneficial effects of the present invention are: the mechanical mechanism is used to realize radial expansion and contraction of the mold, and the structural precision is high, which can fundamentally solve the problems of incomplete expansion and structural asymmetry of the bladder in the existing vulcanization process, and can greatly increase the vulcanization pressure and improve the glue quality. The flow distribution of the material in the molten state improves the uniformity and dynamic balance of the finished tire. The structure is stable and the strength is high. It can be used for tire vulcanization for a long time. It solves the problem of short life and frequent replacement of the bladder in the original process.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a cross-sectional view of the tire vulcanization inner mold in the expanded state of the present invention.

Fig. 2 is a cross-sectional view of the tire vulcanization inner mold in a contracted state according to the present invention.

Fig. 3 is an appearance view of the tire vulcanization inner mold in the expanded state of the present invention.

Fig. 4 is a schematic diagram of mold clamping when using the tire vulcanization inner mold of the present invention to vulcanize a tire.

1. Wide drum tile, 2. Wide tile side slider, 3. Wide tile side guide rail, 4. Clamp ring, 5. Connecting bolt, 6. End cover, 7. Narrow tile side guide rail, 8. Narrow tile Lateral slider, 9. Narrow drum tile bracket, 10. Narrow drum tile, 11. Narrow tile bottom guide rail, 12. Narrow tile bottom slider, 13. Base, 14. Piston rod, 15. Limiting plate, 16 .Wide tile bottom slider, 17. Wide tile bottom guide rail, 18. Wide drum tile bracket, 19. Tire blank, 20. Base, 21. Lower steel ring, 22. Upper cover, 23. Outer mold.

detailed description

In Fig. 1, Fig. 2, Fig. 3, Fig. 4, the present invention includes telescopic mechanism and transmission mechanism, wherein, telescopic mechanism is mainly made up of narrow drum tile telescopic mechanism and wide drum tile telescopic mechanism. The narrow drum tile telescopic mechanism includes: narrow drum tile 10, narrow drum tile bracket 9; the wide drum tile telescopic mechanism includes: wide drum tile 1, wide drum tile bracket 18. The transmission mechanism includes: piston rod 14, end cover 6, clamp ring 4, base 13, limit plate 15, narrow tile lateral slider 8, narrow tile lateral guide rail 7, wide tile lateral slider 2, wide tile Side guide rail 3, wide tile bottom slide block 16, wide tile bottom guide rail 17, narrow tile bottom slide block 12, narrow tile bottom guide rail 11. The end cover 6 is fixed to one end of the base 13, and is fixedly connected to the piston rod 14 through the clamp ring 4 and the connecting bolt 5. On the wedge-shaped surface of the base 13, narrow tile side guide rails 7 and wide tile side guide rails 3 are alternately installed. , the narrow tile side guide rail 7 cooperates with the narrow tile side slider 8 fixed on the narrow drum tile bracket 9, and the wide tile side guide rail 3 cooperates with the wide tile side slider 2 fixed on the wide drum tile bracket 18 .

When the piston rod 14 lifts vertically, the base 13 moves together with the piston rod 14, and drives the telescopic mechanism to expand and contract radially through the cooperation of the guide rail and the slider. The base 20 is fixedly assembled, and the upper side of the limit plate 15 is alternately equipped with narrow tile bottom sliders 12 and wide tile bottom sliders 16, which are respectively connected with the narrow tile bottoms fixed on the narrow drum tile bracket 9 and the wide drum tile bracket 18. The guide rail 11 cooperates with the wide tile bottom guide rail 17 to prevent the axial displacement of the drum tile during expansion and contraction.

As shown in Figure 3, in the tire vulcanization inner mold of the present invention, wide drum tiles 1 and narrow drum tiles 10 are arranged alternately along the circumferential direction, when all the drum tiles are in the expanded position, the outer diameter of the inner mold is equal to the inner contour diameter of the finished tire, Its outer contour curve is consistent with the inner contour curve of the finished tire.

As shown in Fig. 4, the vulcanization bladder on the central mechanism of the tire shaping vulcanizer is replaced with the tire vulcanization inner mold of the present invention, and under the drive of the piston rod 14 of the central mechanism, the inner mold can realize expansion and contraction. When the vulcanizer is in the mold clamping state, the inner mold presents an expanded form and cooperates with the outer mold 23 to apply the high pressure needed for vulcanization to the green tire 19 .

Adopt the concrete steps of vulcanized tire of the present invention:

1) Tire loading: the limit plate 15 is at a certain height from the lower steel ring 21 to ensure that the bottom end of the drum tile does not interfere with the lower steel ring 21 when the mold expands and contracts. 19 placed on the vulcanizing machine table.

2) Shaping: the limit plate 15 and the base 20 of the central mechanism remain still, the piston rod 14 of the central mechanism descends, the base 13 moves together with the piston rod 14, and drives the telescopic mechanism to expand radially through the cooperation of the guide rail and the slider. When the wide drum tile 1 and the narrow drum tile 10 are fully opened, the action is stopped. At this time, the blank tire 19 is supported and fixed by the drum tiles, and then the central mechanism moves down, and the inner mold and the blank tire 19 are placed on the lower steel ring 21.

3) Mold closing: As shown in Figure 4, the steam chamber is closed. At this time, the upper cover 22 of the outer mold presses the upper end surface of the clamp ring 4 to limit the position of the center mechanism, so as to prevent the excessive pressure on the surface of the drum tile during vulcanization from causing the piston rod to 14 picked up.

4) Tire unloading: the steam chamber is opened, and the vulcanized tire moves up with the center mechanism as a whole, and stops when the lower tire side is completely separated from the lower steel ring 21, then the limit plate 15 and the center mechanism base 20 remain stationary, and the center mechanism piston rod 14 moves up, drives wide drum tile 1 and narrow drum tile 10 to shrink in the bead diameter by the cooperation of guide rail and slide block, and now tire is taken off smoothly.

Claims (1)

1. a tyre vulcanization inner mold, is characterized in that: comprise telescoping mechanism and transmission mechanism, wherein, telescoping mechanism is mainly made up of narrow drum watt telescoping mechanism and a wide drum watt telescoping mechanism, and a narrow drum watt telescoping mechanism comprises: narrow drum watt, narrow drum watt support, a wide drum watt telescoping mechanism comprises: Kuan Guwa, wide drum watt support, transmission mechanism comprises: piston rod, end cap, clamp ring, pedestal, position-arresting disk, narrow watt of side slide block, narrow watt of side guide, wide watt of side slide block, wide watt of side guide, wide watt of base slider, wide watt of bottom guide track, narrow watt of base slider, narrow watt of bottom guide track, end cap and pedestal one end are fixed, and be fixedly connected with piston rod with connecting bolt by clamp ring, on the lozenges of pedestal, be mounted alternately with narrow watt of side guide and wide watt of side guide, narrow watt of side guide coordinates with the narrow watt of side slide block being fixed on narrow drum watt support, wide watt of side guide coordinates with the wide watt of side slide block being fixed on wide drum watt support, upper cover of piston rod is equipped with position-arresting disk, on position-arresting disk upper side is circumferential, narrow watt of base slider and wide watt of base slider are alternately housed, narrow watt of base slider and wide watt of base slider coordinate with the narrow watt of bottom guide track and the wide watt of bottom guide track that are fixed on narrow drum watt support and wide drum watt support respectively, described wide drum watt and the circumferential alternative arrangement in narrow drum watt edge, when all drums are watt in distending position, the overall diameter of inner mold equals outline diameter in finished tire, and its outline curve is consistent with finished tire inner profile curve.