CN217258254U

CN217258254U - PVC pipe die for expanding compression ratio multiple

Info

Publication number: CN217258254U
Application number: CN202220138566.0U
Authority: CN
Inventors: 张波
Original assignee: Kunshan Jurry Machinery Co ltd
Current assignee: Kunshan Jurry Machinery Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-08-23
Anticipated expiration: 2032-01-19

Abstract

The utility model discloses a PVC pipe mould for expanding compression ratio multiple, which comprises a pipe mould main body, an expansion sleeve is arranged on the pipe mould main body, a flow passage inlet is arranged on the expansion sleeve, a flow passage inlet is fixedly connected with a shunt slurry channel arranged in the expansion sleeve, one side of the expansion sleeve close to the flow passage inlet is fixedly provided with a shunt sharp corner, one side of the expansion sleeve is fixedly provided with a shunt bracket, one side of the shunt bracket far away from the expansion sleeve is fixedly provided with a first transition sleeve, a slurry confluence channel is arranged in the first transition sleeve, the slurry confluence channel and the shunt slurry channel are arranged, one end of the first transition sleeve far away from the shunt bracket is fixedly provided with a second transition sleeve, a discharge channel is arranged on the second transition sleeve, a core rod is arranged at the central position of the pipe mould main body, a compression bulge is arranged in the slurry confluence channel, the expansion sleeve and the shunt sharp are shortened, simultaneously, the flow passage of the expansion sleeve and the shunt sharp is made into a circular arc flow passage, and the relaxation of the material in the section is slowed down, and the material storage amount in the section is reduced.

Description

PVC pipe die for expanding compression ratio multiple

Technical Field

The utility model relates to a PVC tubular product production facility technical field especially relates to a PVC tubular product mould of expansion compression ratio multiple.

Background

The pipe die is a key component of the molding part of the pipe extrusion production line. The polyvinyl chloride PVC pipe die designed and developed by the Shengyuan can be widely applied to processing various PVC pipes, such as water supply pipes, drain pipes, industrial pipes, irrigation pipes and the like.

PVC tubular product mould is in the market, and the support type mould is mainly. The support type mould must give the PVC raw materials and extrude very closely when producing PVC tubular product, ensures to eliminate the closed flow seam that the reposition of redundant personnel muscle reposition of redundant personnel of support type mould produced, must guarantee simultaneously that the detection of tubular product will be qualified, just must guarantee that the compression ratio of mould will reach certain numerical value, ensures the straight section length of the mouth mandrel of certain value simultaneously. In addition, due to the raw materials for production, PVC is easily decomposed at high temperature, and if the compression ratio of the die cavity area to the pipe specification is too large) or the straight section is too long, the PVC raw material stays in the die cavity for too long time, so that the PVC raw material is easily yellowed or decomposed and cannot be smoothly extruded. Therefore, under normal conditions, the minimum compression ratio and the maximum compression ratio of the mold are controlled within a certain range, and the compression ratio multiple value of the mold is generally controlled within 3.5-4 in the market. The production range of the PVC pipe mold is expanded, namely the compression ratio multiple value of the mold is expanded.

At present, the compression ratio multiple value of the mould for producing polyvinyl chloride (PVC) pipes in China is generally 3.5-4, and when the compression ratio multiple is smaller, the number of the pipe specifications produced by one set of mould is less; when the specification range of a batch of pipes to be produced is large, the multiple of the compression ratio range is small, and the number of the sets of the dies is increased. Therefore, the cost of the die is high, and the number of times of die replacement is increased during specification replacement production, which affects the production efficiency of pipe manufacturers, so that a PVC pipe die for expanding the compression ratio multiple is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an enlarge PVC tubular product mould of compression ratio multiple to when the compression ratio scope multiple of proposing in solving above-mentioned background art is less, the quantity of the tubular product specification of one set of mould production will be less, has leaded to the higher problem of cost of mould.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an enlarge PVC tubular product mould of compression ratio multiple, includes tubular product mould main part, be equipped with the expansion cover in the tubular product mould main part, seted up the runner entry on the expansion cover, runner entry fixedly connected with sets up the reposition of redundant personnel ground paste passageway in the expansion cover, and one side fixed mounting that the expansion cover is close to the runner entry has the reposition of redundant personnel closed angle, one side fixed mounting of expansion cover has the reposition of redundant personnel support, and one side fixed mounting that the reposition of redundant personnel cover was kept away from to the reposition of redundant personnel support has first transition cover, has seted up ground paste confluence passageway in the first transition cover, ground paste confluence passageway and reposition of redundant personnel ground paste passageway, the one end fixed mounting that the reposition of redundant personnel support was kept away from to first transition cover has the second transition cover, has seted up discharging channel on the second transition cover, tubular product mould main part central point fixed mounting has the plug, fixed mounting has the compression drum package in the ground paste confluence passageway.

Preferably, the number of the second transition sleeves is two, a first compression angle and a second compression angle are respectively arranged at one end, close to the slurry converging channel, of the two second transition sleeves, and the inclination of the first compression angle is greater than that of the second compression angle.

Preferably, the divergence angle of the divergent angle is 30-35 °.

Preferably, the slurry shunting channel is a gourd-shaped curved arc runner.

Preferably, the size of the compression bulge is about one third of the flow channel gap at the shunt bracket.

Preferably, the magnitude of the first compression angle and the second compression angle of the two second transition sleeves varies between 15 ° and 20 °, in the limit case between 13 ° and 22 °.

The utility model has the advantages that:

the utility model discloses in, will expand the cover and shunt the point and change the weak point into, will expand the cover simultaneously and make the circular arc runner with the runner of reposition of redundant personnel point, and slow down loosening of material in this section, reduce the material volume of depositing in this section.

The utility model discloses in, through the transition cover (first transition cover and second transition cover) that designs two section formulas with original transition cover, the compression angle that can pass through the cover adjusts to the length that has changed the mould compression section can carry out effectual regulation and control to the demand of different specification materials.

The utility model discloses in, through the compression swell that is equipped with, the multi-disc partition material that is cut apart by the reposition of redundant personnel muscle like this once in the quick compression in compression swell's position, mix, ensure simultaneously that the compression swell can not hinder the material, has hindered the smooth flow of material.

Drawings

Fig. 1 is a schematic structural view of a PVC pipe mold for expanding compression ratio multiple provided by the present invention;

fig. 2 is the utility model provides an installation of expanding PVC tubular product mould of compression ratio multiple is equipped with the second compression cover's at second compression angle structural schematic diagram.

In the figure: 1. a pipe mold body; 2. a flow channel inlet; 3. shunting sharp corners; 4. an expansion sleeve; 5. a shunt bracket; 6. a first transition sleeve; 7. a first compression angle; 8. a discharge channel; 9. a second transition sleeve; 10. a slurry confluence channel; 11. compressing the bulge; 12. a core rod; 13. a slurry diversion channel; 14. a second compression angle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, a PVC pipe mould of expansion compression ratio multiple includes pipe mould main part 1, its characterized in that: an expansion sleeve 4 is arranged on a pipe mould main body 1, a flow channel inlet 2 is arranged on the expansion sleeve 4, a flow distribution slurry channel arranged in the expansion sleeve 4 is fixedly connected with the flow channel inlet 2, a flow distribution sharp corner 3 is fixedly arranged on one side of the expansion sleeve 4 close to the flow channel inlet 2, a flow distribution bracket 5 is fixedly arranged on one side of the expansion sleeve 4, a first transition sleeve 6 is fixedly arranged on one side of the flow distribution bracket 5 far away from the expansion sleeve 4, a slurry confluence channel 10 is arranged in the first transition sleeve 6, the slurry confluence channel 10 and a flow distribution slurry channel 13 are fixedly arranged, a second transition sleeve 9 is fixedly arranged at one end of the first transition sleeve 6 far away from the flow distribution bracket 5, a discharge channel 8 is arranged on the second transition sleeve 9, a core rod 12 is fixedly arranged at the central position of the pipe mould main body 1, a compression drum 11 is fixedly arranged in the slurry confluence channel 10, and PVC raw materials plasticized by an extruder enter a flow distribution channel of the flow distribution sharp corner 3 of the mould to enter a forming flow channel, when a small-specification pipe is produced (the compression ratio is large), in order to reduce the retention time of materials in a mold, an expansion sleeve 4 and a shunting sharp corner 3 are shortened, meanwhile, in order to ensure smooth flowing of the materials, a flow channel of the expansion sleeve 4 and the shunting sharp corner 3 is made into an arc flow channel, the loosening of the materials in the section is slowed down, and the material storage amount in the section is reduced, the original transition sleeve is designed into a two-section transition sleeve (a first transition sleeve 6 and a second transition sleeve 9) at the rear end of an outer cavity of a shunting support 5, so that the front section of the transition sleeve is connected with the shunting support 5 and the expansion sleeve 4, the integral framework of the mold is ensured, and when the specification is changed, the mold cannot be disassembled and assembled with large workload, and only a part with a small range in the rear section is changed; the rear section of the transition sleeve can be replaced, and different rear sections of the transition sleeve can be designed for large specifications and small specifications in a targeted manner.

Referring to fig. 1-2, in the present invention, there are two second transition sleeves 9, a first compression angle 7 and a second compression angle 14 are respectively disposed at one end of each of the two second transition sleeves 9 close to the slurry confluence channel 10, the inclination of the first compression angle 7 is greater than that of the second compression angle 14, the size change of the first compression angle 7 and the second compression angle 14 of the two second transition sleeves 9 is between 15 ° and 20 °, and in the limit condition, the compression angle of the rear section of the transition sleeve with large specification (small compression ratio) is reduced to some extent, so as to ensure the length of the large specification storage section; and the compression angle of the rear section of the transition sleeve with small specification (large compression ratio) is increased, so that the whole flow passage is shortened, and the retention time of the material in the die is shortened when the small specification is reduced, thereby ensuring that the material can be smoothly extruded.

Referring to fig. 1-2, in the utility model, the angle of the expansion angle of the shunting sharp corner 3 is 30-35 degrees, the expansion sleeve 4 and the shunting sharp corner 3 are shortened, and simultaneously, the smooth flow of the material is ensured.

Referring to fig. 1-2, in the present invention, the flow channel of the slurry channel 13 is divided into a gourd-shaped curved surface radian flow channel, the flow channel of the expansion sleeve 4 and the flow channel of the divided sharp corner 3 are made into an arc flow channel, and the relaxation of the material in this section is slowed down, so as to reduce the material storage amount in this section.

Referring to fig. 1-2, in the utility model, the size of compression swell 11 is about the third of reposition of redundant personnel support 5 department runner clearance about, through the compression swell 11 that is equipped with, the multi-disc partition material that is cut apart by reposition of redundant personnel muscle is once in the quick compression in compression swell 11's position, mashup once like this, releases again after through the swell, then progressively compresses again, mashup. Therefore, the materials are changed from primary compression and kneading into secondary compression and kneading, so that the round tubular materials are tightly kneaded, the pressure in each direction is uniformly distributed, and the qualified extruded pipe blank is obtained. When the compression ratio is slightly smaller, the closed flow seam generated by shunting of the shunting ribs of the bracket type die is effectively eliminated, and all detection indexes of the pipe are guaranteed to be qualified.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an enlarge PVC tubular product mould of compression ratio multiple, includes tubular product mould main part (1), its characterized in that: the pipe mold is characterized in that an expansion sleeve (4) is arranged on the pipe mold main body (1), a flow channel inlet (2) is formed in the expansion sleeve (4), a flow distribution slurry channel () in the expansion sleeve (4) is formed in the expansion sleeve (4), one side of the expansion sleeve (4) close to the flow channel inlet (2) is fixedly provided with a flow distribution sharp corner (3), one side of the expansion sleeve (4) is fixedly provided with a flow distribution support (5), one side of the flow distribution support (5) far away from the expansion sleeve (4) is fixedly provided with a first transition sleeve (6), a slurry confluence channel (10) is formed in the first transition sleeve (6), the slurry confluence channel (10) and a flow distribution slurry channel (13) are arranged, one end of the first transition sleeve (6) far away from the flow distribution support (5) is fixedly provided with a second transition sleeve (9), a pipe material discharging channel (8) is formed in the second transition sleeve (9), and a core rod (12) is fixedly arranged at the center position of the mold main body (1), and a compression bulge (11) is fixedly arranged in the slurry confluence channel (10).

2. The PVC pipe mold for expanding the compression ratio multiple according to claim 1, wherein: the slurry converging channel (10) is provided with two second transition sleeves (9), one ends of the two second transition sleeves (9) close to the slurry converging channel (10) are respectively provided with a first compression angle (7) and a second compression angle (14), and the inclination of the first compression angle (7) is greater than that of the second compression angle (14).

3. The PVC pipe mold for expanding the compression ratio multiple according to claim 1, wherein: the divergence angle of the shunting sharp corner (3) is 30-35 degrees.

4. The PVC pipe mold for expanding the compression ratio multiple according to claim 1, wherein: the flow distribution slurry channel (13) is a gourd-shaped curved surface radian flow channel.

5. The PVC pipe mold for expanding the compression ratio multiple according to claim 1, wherein: the size of the compression bulge (11) is about one third of the flow passage gap at the shunt bracket (5).

6. The PVC pipe mold for expanding the compression ratio multiple according to claim 1, wherein: the magnitude of the first compression angle (7) and the second compression angle (14) of the two second transition sleeves (9) varies between 15 ° and 20 °, in the limit case between 13 ° and 22 °.