CN209920497U

CN209920497U - Pressurizing machine head of tire tube extruder

Info

Publication number: CN209920497U
Application number: CN201920587791.0U
Authority: CN
Inventors: 曹红光
Original assignee: Weihai Runtong Rubber Co Ltd
Current assignee: Weihai Runtong Rubber Co Ltd
Priority date: 2019-04-26
Filing date: 2019-04-26
Publication date: 2020-01-10
Anticipated expiration: 2029-04-26

Abstract

The utility model discloses a child section of thick bamboo extruder pressure boost aircraft nose, including aircraft nose flange, aircraft nose packing ring, mandrel seat, aircraft nose bucket, mouth shape, dabber, core type, the colloid circulation passageway has been constructed between dabber and aircraft nose bucket, has constructed colloid extrusion moulding's clearance between core type and mouth shape, and the circulation passageway is provided with the pressure boost section, and the shape of core type is the U type. The utility model increases the colloid circulation pressure by designing the pressurizing section, so that the extruded tyre tube is compact; the contact area between the mouth mold and the core mold is increased by changing the shape of the core mold, so that a pressure gradient is formed, the extrusion time of the colloid is long, and the surface smoothness is good.

Description

Pressurizing machine head of tire tube extruder

Technical Field

The utility model relates to an inner tube of a tyre extruder, concretely relates to child section of thick bamboo extruder pressure boost aircraft nose.

Background

In the production of inner tubes, the process of extruding the tube is a very critical process, which determines the quality and service life of the finished tire. The quality problems of uneven tire tube thickness, bubbles, rough surface, poor tire tube compactness, scorching during extrusion and the like easily occur in the traditional extrusion process, and the service life of the inner tube is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses exert oneself in providing a child section of thick bamboo extruder pressure boost aircraft nose. One of the quality problems in the extrusion process of the tire tube is solved by the pressurization design of the tire tube extruder.

The utility model provides a technical scheme that above technical problem adopted as follows: a pressurizing machine head of a tire tube extruder comprises a machine head flange, a machine head gasket, a mandrel seat, a machine head barrel, a mouth shape, a mandrel and a core shape, wherein a colloid circulation channel is constructed between the mandrel and the machine head barrel, and a colloid extrusion molding gap is constructed between the core shape and the mouth shape; the core is U-shaped.

Further, the flow passage is formed in a first-contraction and then-enlargement shape in the flow direction by the pressurizing section.

Further, the pressurizing section is a section of a flared channel.

Further, the pressurizing section is formed by changing the inner diameter of the handpiece barrel, or the outer diameter of the mandrel, or both.

Further, the pressurizing section is disposed at an end of the flow channel.

Compared with the prior art, the beneficial effects of the utility model are embodied in: 1. the utility model discloses the aircraft nose of extruder is reformed transform to novelty, constructs a pressure boost section passageway through reducing the diameter ratio, has improved the compactness of extruding a child section of thick bamboo to improve the gas tightness of the inner tube of a tyre, reduced the bubble problem of extruding a child section of thick bamboo, great improvement the qualification rate of product, increased the competitiveness in economic benefits and market. 2. The shape of the core is reformed, the contact area between the mouth shape and the core shape is increased, the compactness of the extrusion tube and the surface smoothness of the product are further increased, the appearance quality of the product is improved, and an ideal effect is achieved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the drawings.

FIG. 1 is a sectional view of the structure of the head of the tire tube extruder of the present invention;

FIG. 2 is a prior art core configuration and core to die relationship;

FIG. 3 is a diagram showing the structure of the core and the relationship between the core and the die;

fig. 4 is an enlarged view of fig. 3 at B.

Detailed Description

The invention is described in detail below with reference to the drawings, which form a part hereof, and with reference to embodiments of the invention. However, it should be understood by those skilled in the art that the following examples are not intended to limit the technical solutions of the present invention, and all equivalent changes or modifications made in the spirit of the technical solutions of the present invention should be considered as falling within the protection scope of the present invention.

Fig. 1 is the utility model discloses child section of thick bamboo extruder aircraft nose structure cross-sectional view, child section of thick bamboo extruder aircraft nose include following part and/or position: the machine head comprises a machine head flange 1, a machine head gasket 2, a mandrel seat 3, a machine head barrel 4, an air inlet/outlet 5, a cooling water jacket 6, a water outlet 7, a mouth shape 8, a mandrel nut 9, a conversion head 10, an air outlet 11, an air inlet 12, a mouth shape adjusting threaded hole 13, a mandrel 14, a water inlet 15, a core shape 16 and a pressurizing section 17. Wherein, the air inlet/outlet 5 shows that two openings are arranged on the same cross section, one is an air inlet and the other is an air outlet.

The machine head barrel 4 is connected to the machine head flange 1, the machine head gasket 2 and the mandrel base 3 are connected to the head of the machine head barrel 4, and colloid circulation ports are formed in the machine head gasket 2 and the mandrel base 3; the mouth shape 8 is connected at the tail part of the machine head barrel 4, the head part and the tail part are defined along the flowing direction of the colloid, the inflow end is the head part, and the outflow end is the tail part; the core mould 16 is sleeved on the mandrel 14 and arranged at the mouth part of the mouth part 8, and a narrow gap is formed between the core mould 16 and the mouth part 8 for the extrusion and outflow of the colloid; the mandrel 14 is arranged on the mandrel seat 3 in a penetrating way, and a colloid circulation channel is formed between the mandrel 14 and the handpiece barrel 4. The glue flows in from the opening of the nose flange 1, passes through the gap on the mandrel seat 3 and the channel between the nose barrel 4 and the mandrel 14, and finally flows out from the gap between the mouth mold 8 and the core mold 16 for extrusion molding, as indicated by the arrow direction in fig. 1.

The utility model discloses the first improvement of doing lies in: on the flow channel between the nose barrel 4 and the mandrel 14, a pressurizing section 17 is provided, which means that the flow area of the colloid is first reduced and then enlarged in the section, so that the pressure of the colloid after flowing through the pressurizing section is greater than the pressure before flowing through the pressurizing section. The significance of setting up the pressure boost section lies in making the flow area around the pressure boost section change to increase the circulation ability of colloid, with the extrusion pressure that improves the extruder, the child section of thick bamboo of extruding just can thickness be even, the surface is smooth, reduce the bubble.

Further, said pressure increasing section 17 is arranged at the end of the flow-through channel, i.e. close to the extruder outlet.

Still further, the plenum section 17 forms a flared passage.

Still further, the pressurizing section 17 can be formed by changing the inner diameter of the handpiece barrel 4 or the outer diameter of the mandrel 14, or simultaneously changing the inner diameter of the handpiece barrel 4 and the outer diameter of the mandrel 14.

In one embodiment, the method can improve the product percent of pass by 1.6%.

The utility model discloses the second point improvement of doing lies in: the conventional core 16 has a V-shape as shown in FIG. 2, by changing the shape of the core 16; the utility model provides a U-shape, as shown in fig. 3. This is done to increase the contact area between the die 8 and the core 16, as shown in fig. 4, and to reduce the cross-sectional area of the die and the head, thereby creating a pressure gradient, so that the gel pressure is gradually increased and the extruded tire tube will be dense. If the smoothness of the mouth mold and the core mold is increased, the density and the surface smoothness effect of the extruded tire tube are further improved, so that the physical and mechanical properties and the appearance quality of the tire tube are improved, and the service life of the inner tube is prolonged.

Meanwhile, the U-shaped design also has good flow guiding effect.

The utility model discloses novelty transformation child section of thick bamboo extruder aircraft nose structure increases pressure through reducing the circulation diameter, has improved the fashioned closely knit degree of colloid, has solved child section of thick bamboo bubble, the inhomogeneous scheduling problem of child section of thick bamboo thickness. The improved inner tube has the advantages of high surface brightness, good air tightness and the like.

Claims

1. The utility model provides a child section of thick bamboo extruder pressure boost aircraft nose, includes aircraft nose flange, aircraft nose packing ring, mandrel seat, aircraft nose bucket, mouth type, dabber, core type, is constructed colloid circulation passageway between dabber and the aircraft nose bucket, is constructed colloid extrusion moulding's clearance between core type and the mouth type, its characterized in that:

a flow channel between the mandrel and the handpiece barrel is provided with a pressurizing section;

the core is U-shaped.

2. The tube extruder press head of claim 1, wherein: the flow channel forms a first-contraction and then-enlargement shape in the flow direction through the pressurization section.

3. The tyre drum extruder press head according to claim 1 or 2, characterized in that: the pressurizing section is a section of a bell mouth-shaped channel.

4. The tyre drum extruder press head according to claim 1 or 2, characterized in that: the pressurizing section is formed by changing the inner diameter of the handpiece barrel, the outer diameter of the mandrel or the inner diameter of the handpiece barrel and the outer diameter of the mandrel simultaneously.

5. The tube extruder press head of claim 3, wherein: the pressurizing section is formed by changing the inner diameter of the handpiece barrel, the outer diameter of the mandrel or the inner diameter of the handpiece barrel and the outer diameter of the mandrel simultaneously.

6. The tube extruder press head of claim 1, wherein: the pressurizing section is arranged at the tail end of the flow channel.