CN216329932U

CN216329932U - Core mould capable of adjusting wall thickness of plastic pipe on line

Info

Publication number: CN216329932U
Application number: CN202122645307.5U
Authority: CN
Inventors: 陈厚忠
Original assignee: Wuhan Kingbull Economic Development Co Ltd
Current assignee: Wuhan Kingbull Economic Development Co Ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-04-19
Anticipated expiration: 2031-11-01

Abstract

The utility model discloses a core mold capable of adjusting the wall thickness of a plastic pipe on line, which belongs to the technical field of molds and comprises a mouth mold and a connecting cylinder, wherein the inner wall of the connecting cylinder is in sliding connection with the outer surface of a connecting column, and the top end of the connecting column is fixedly connected with the lower surface of a first core mold body. This can mandrel of on-line adjustment plastics tubular product wall thickness, through setting up the rotation axis, first bevel gear, second bevel gear, a screw section of thick bamboo, the lead screw, the magnetic sheet, the fixture block, draw-in groove and elastic component, this moment a screw section of thick bamboo rotates and stretches out the lead screw by in the screw section of thick bamboo, second core die body and third core die body rebound this moment, after the fixture block removed to the magnetic sheet top, magnetic force reduces between fixture block and the magnetic sheet, elastic component drives fixture block and draw-in groove separation this moment, accomplish the adjustment of second mandrel body position and taking off of third core die body this moment, it is comparatively swift to the adjustment process of plastics tubular product wall thickness, reduce and shut down the loss of changing to raw and other materials, reduce the influence to machining efficiency simultaneously.

Description

Core mould capable of adjusting wall thickness of plastic pipe on line

Technical Field

The utility model belongs to the technical field of dies, and particularly relates to a core die capable of adjusting the wall thickness of a plastic pipe on line.

Background

The plastic pipeline is produced by adopting an extrusion molding process, a plastic raw material is melted and plasticized into a melt through an extruder, a uniform and stable material flow is formed through a die body, and a plastic pipeline finished product is obtained through cooling and shaping after passing through an annular gap formed by a neck die and a core die. The plastic pipeline is divided into different pipe series according to the use condition, namely the wall thickness of the pipe with the same outer diameter is different. The bush on the market at present, mandrel formula as an organic whole usually, when same production line need produce different wall thickness tubular product, need all pull down the bush mandrel, wait after the change mandrel that the mandrel heating finishes just can continue to produce, shut down the loss that can produce the raw materials on the one hand, on the other hand can reduce production efficiency.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the defects of the prior art, the utility model provides a core mold capable of adjusting the wall thickness of a plastic pipe on line, which solves the problems that the existing mouth mold and core mold on the market are usually integrated, when pipes with different wall thicknesses need to be produced on the same production line, the mouth mold core mold needs to be completely detached, the production can be continued after the core mold is replaced and the core mold is heated, on one hand, the machine halt can cause the loss of raw materials, and on the other hand, the production efficiency can be reduced.

(II) technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a can online regulation plastics tubular product wall thickness's mandrel, includes bush and connecting cylinder, the inner wall of connecting cylinder and the surface sliding connection of spliced pole, the top of spliced pole and the lower fixed surface of first core die body are connected, the upper surface of first core die body is provided with second core die body, the upper surface of second core die body is provided with the third core die body, the standing groove has all been seted up to the upper surface of first core die body and second core die body.

The standing groove inner wall and the outer surface overlap joint of placing the piece, two the upper surface of placing the piece respectively with the lower fixed surface connection of second die body and third die body, the draw-in groove has all been seted up to the left and right sides face of standing groove inner wall, the draw-in groove inner wall is provided with the fixture block, the surface and the recess inner wall overlap joint of fixture block, the spread groove has been seted up to the bottom of spliced pole.

The upper surface of the inner wall of the connecting groove is fixedly connected with the top end of the screw rod, the outer surface of the screw rod is in threaded connection with a threaded cylinder, a first bevel gear is arranged on the outer surface of the threaded cylinder and meshed with a second bevel gear, and the front surface of the second bevel gear is fixedly connected with one end of the back surface of the rotating shaft.

As a further scheme of the utility model: the outer surface of the rotating shaft is provided with a second bearing, the second bearing is arranged on the front face of the connecting cylinder, the front face of the connecting cylinder is fixedly connected with the back face of the protective sleeve, the protective sleeve is clamped on the front face of the neck mold, and the rotating shaft is located in the protective sleeve.

As a further scheme of the utility model: the bottom of spliced pole and the top fixed connection of telescopic link, the bottom of telescopic link and the lower surface fixed connection of connecting cylinder inner wall.

As a further scheme of the utility model: the outer surface of the fixture block is provided with an elastic component, the other end of the elastic component is fixedly connected with the inner wall of the groove, and the two grooves on the lower side are respectively arranged on the left side surface and the right side surface of the same placing block.

As a further scheme of the utility model: the inner wall of the neck ring mold is provided with a magnetic plate, the fixture block has magnetism, and the magnetism of the fixture block is opposite to that of the magnetic plate.

As a further scheme of the utility model: the outer surface of the threaded cylinder is provided with a first bearing, and the first bearing is arranged on the lower surface of the inner wall of the connecting cylinder.

As a further scheme of the utility model: the size of the first core die body, the size of the second core die body and the size of the third core die body correspond to the size of the mouth die, and the first core die body, the second core die body and the third core die body are all in a truncated cone shape.

(III) advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

1. this can mandrel of on-line adjustment plastics tubular product wall thickness, through setting up the rotation axis, first bevel gear, second bevel gear, the screw section of thick bamboo, the lead screw, the magnetic sheet, the fixture block, draw-in groove and elastic component, when needing to adjust plastics tubular product wall thickness, direct control second mandrel body removes to bush upper portion position, rotation axis control second bevel gear rotates, the screw section of thick bamboo rotation is stretched out the lead screw in by the screw section of thick bamboo this moment, second mandrel body and third mandrel body rebound this moment, after the fixture block removes to the magnetic sheet top, magnetic force reduces between fixture block and the magnetic sheet, elastic component drives the fixture block and separates with the draw-in groove this moment, accomplish the adjustment and the taking off of third mandrel body to second mandrel body position this moment, it is comparatively swift to the adjustment process of plastics tubular product wall thickness, reduce and shut down the loss of changing to raw and other materials, reduce the influence to machining efficiency simultaneously.

2. This can online adjustment plastics tubular product wall thickness's mandrel through setting up the protective sheath, and the protective sheath passes inside the bush and extends to the bush outside, avoids appearing the contact between rotation axis and the raw materials, makes rotation axis rotation control second bevel gear rotation process go on steadily smoothly.

3. This can online adjustment plastics tubular product thick wall's mandrel through setting up the telescopic link, the telescopic link can play the supporting role to reciprocating of spliced pole, avoids the spliced pole to appear rotatory or rock the condition, guarantees that a screw section of thick bamboo rotates the process and carries out the removal operation of vertical direction through the smooth control spliced pole of lead screw.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a perspective view of the connector of the present invention;

FIG. 4 is a schematic perspective sectional view of a magnetic plate according to the present invention;

FIG. 5 is a schematic perspective cross-sectional view of a connector according to the present invention;

FIG. 6 is an enlarged view of part A of the present invention;

FIG. 7 is a schematic cross-sectional view of a three-dimensional placement block according to the present invention;

in the figure: 1. a neck ring mold; 2. a connecting cylinder; 3. a magnetic plate; 4. connecting columns; 5. a first core mold body; 6. a second core body; 7. a third core body; 8. a placement groove; 9. placing the blocks; 10. a card slot; 11. a clamping block; 12. a groove; 13. an elastic component; 14. connecting grooves; 15. a screw rod; 16. a threaded barrel; 17. a first bearing; 18. a first bevel gear; 19. a second bevel gear; 20. a rotating shaft; 21. a second bearing; 22. a protective sleeve; 23. a telescopic rod.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 7, the present invention provides a technical solution: the utility model provides a can online regulation plastics tubular product wall thickness's mandrel, including bush 1 and connecting cylinder 2, the inner wall of connecting cylinder 2 and the surface sliding connection of spliced pole 4, spliced pole 4's top and the lower surface fixed connection of first core die body 5, the upper surface of first core die body 5 is provided with second core die body 6, the upper surface of second core die body 6 is provided with third core die body 7, standing groove 8 has all been seted up to the upper surface of first core die body 5 and second core die body 6, through setting up standing groove 8 and placing piece 9, can carry on spacingly to between second core die body 6 and the first core die body 5 when placing piece 9 and being located standing groove 8, just the separation of rocking of horizontal direction appears relatively in the two.

Standing groove 8 inner wall and the outer surface overlap joint of placing piece 9, two upper surfaces of placing piece 9 respectively with the lower fixed surface of second core die body 6 and third core die body 7 be connected, draw-in groove 10 has all been seted up to the left and right sides face of standing groove 8 inner wall, draw-in groove 10 inner wall is provided with fixture block 11, through setting up fixture block 11 and draw-in groove 10, when fixture block 11 is located draw-in groove 10, can be spacing to placing between piece 9 and the spliced pole 4, guarantee to place piece 9 and can not appear rocking from top to bottom at will, realize the equipment between first core die body 5 and the spliced pole 4, fixture block 11's surface and the overlap joint of recess 12 inner wall, spread groove 14 has been seted up to the bottom of spliced pole 4.

The upper surface of the inner wall of the connecting groove 14 is fixedly connected with the top end of the screw rod 15, through the arrangement of the screw rod 15 and the threaded cylinder 16, the threaded cylinder 16 rotates and controls the screw rod 15 to move in the vertical direction due to the thread effect, the first core mold body 5 can move in the vertical direction, the threaded cylinder 16 is connected to the outer surface of the screw rod 15 through threads, a first bevel gear 18 is arranged on the outer surface of the threaded cylinder 16, through the arrangement of the first bevel gear 18, a second bevel gear 19 and a rotating shaft 20, the rotating shaft 20 rotates and can control the rotation of the threaded cylinder 16 through the second bevel gear 19 and the first bevel gear 18, the first bevel gear 18 is meshed with the second bevel gear 19, and the front face of the second bevel gear 19 is fixedly connected with one end of the back face of the rotating shaft 20.

Specifically, as shown in fig. 1, fig. 2 and fig. 6, the surface of rotation axis 20 is provided with second bearing 21, second bearing 21 sets up in the front of connecting cylinder 2, through setting up second bearing 21, second bearing 21 can play support and limiting displacement to rotation axis 20, guarantee that rotation axis 20 can stabilize the rotation smoothly, the front of connecting cylinder 2 and the back fixed connection of protective sheath 22, through setting up protective sheath 22, protective sheath 22 passes the inside and extension to the bush 1 outside of bush 1, avoid appearing the contact between rotation axis 20 and the raw materials, protective sheath 22 joint is in the front of bush 1, rotation axis 20 is located protective sheath 22.

Specifically, as shown in fig. 6, the bottom of spliced pole 4 and the top fixed connection of telescopic link 23, the bottom of telescopic link 23 and the lower fixed surface of 2 inner walls of connecting cylinder are connected, and through setting up telescopic link 23, telescopic link 23 can play the supporting role to reciprocating of spliced pole 4, avoids spliced pole 4 to appear rotatory or rock the condition.

Specifically, as shown in fig. 6 and 7, an elastic component 13 is disposed on the outer surface of the clamping block 11, the other end of the elastic component 13 is fixedly connected with the inner wall of the groove 12, and by disposing the elastic component 13, when the elastic force of the elastic component 13 is greater than the magnetic force between the clamping block 11 and the magnetic plate 3, the elastic component 13 controls the clamping block 11 to move away from the clamping groove 10, so that the clamping block 11 and the clamping groove 10 are automatically separated, and the two grooves 12 on the lower side are respectively disposed on the left side surface and the right side surface of the same placing block 9.

Specifically, as shown in fig. 2 and 4, the magnetic plate 3 is disposed on the inner wall of the die 1, the fixture block 11 has magnetism, the magnetism of the fixture block 11 is opposite to that of the magnetic plate 3, and by disposing the magnetic plate 3 and the fixture block 11 with opposite magnetism, when the fixture block 11 is located between the magnetic plates 3, the magnetic force between the magnetic plate 3 and the fixture block 11 controls the fixture block 11 to be automatically and stably located in the slot 10.

Specifically, as shown in fig. 5, the outer surface of the threaded cylinder 16 is provided with a first bearing 17, and the first bearing 17 is provided on the lower surface of the inner wall of the connector cylinder 2.

Specifically, as shown in fig. 1 and 2, the sizes of the first core mold body 5, the second core mold body 6, and the third core mold body 7 all correspond to the size of the die 1, and the first core mold body 5, the second core mold body 6, and the third core mold body 7 are all set to be in a truncated cone shape.

The working principle of the utility model is as follows:

s1, when the wall thickness of the plastic pipe needs to be adjusted by using the device, the rotation shaft 20 is directly controlled to rotate, at the moment, the rotation shaft 20 drives the second bevel gear 19 to rotate, the second bevel gear 19 controls the threaded cylinder 16 to rotate through the first bevel gear 18, and at the moment, the connecting column 4 is controlled to move upwards through the thread action between the threaded cylinder 16 and the screw rod 15;

s2, the second mold core 6 and the third mold core 7 move upward, when the uppermost fixture block 11 moves above the magnetic plate 3, the magnetic force between the magnetic plate 3 and the fixture block 11 decreases, and the elastic component 13 drives the fixture block 11 to move away from the fixture slot 10 by its own elasticity;

s3, after the clamping block 11 is separated from the clamping groove 10, the first core die body 5 is taken down upwards, the rotating shaft 20 stops rotating, the position of the second core die body 6 is adjusted, and meanwhile the wall thickness of the plastic pipe is adjusted.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. A core mould capable of adjusting the wall thickness of a plastic pipe on line comprises a mouth mould (1) and a connecting cylinder (2), and is characterized in that: the inner wall of the connecting cylinder (2) is in sliding connection with the outer surface of the connecting column (4), the top end of the connecting column (4) is fixedly connected with the lower surface of the first core die body (5), the upper surface of the first core die body (5) is provided with a second core die body (6), the upper surface of the second core die body (6) is provided with a third core die body (7), and the upper surfaces of the first core die body (5) and the second core die body (6) are both provided with placing grooves (8);

the inner wall of the placing groove (8) is in lap joint with the outer surface of the placing blocks (9), the upper surfaces of the two placing blocks (9) are fixedly connected with the lower surfaces of the second core die body (6) and the third core die body (7) respectively, clamping grooves (10) are formed in the left side surface and the right side surface of the inner wall of the placing groove (8), clamping blocks (11) are arranged on the inner wall of the clamping grooves (10), the outer surface of each clamping block (11) is in lap joint with the inner wall of each groove (12), and connecting grooves (14) are formed in the bottom end of each connecting column (4);

the upper surface of the inner wall of the connecting groove (14) is fixedly connected with the top end of the screw rod (15), the outer surface of the screw rod (15) is in threaded connection with a threaded cylinder (16), a first bevel gear (18) is arranged on the outer surface of the threaded cylinder (16), the first bevel gear (18) is meshed with a second bevel gear (19), and the front surface of the second bevel gear (19) is fixedly connected with one end of the back surface of the rotating shaft (20).

2. The core mould capable of adjusting the wall thickness of the plastic pipe on line according to claim 1, wherein: the outer surface of the rotating shaft (20) is provided with a second bearing (21), the second bearing (21) is arranged on the front face of the connecting cylinder (2), the front face of the connecting cylinder (2) is fixedly connected with the back face of the protective sleeve (22), the protective sleeve (22) is clamped on the front face of the die (1), and the rotating shaft (20) is located in the protective sleeve (22).

3. The core mould capable of adjusting the wall thickness of the plastic pipe on line according to claim 1, wherein: the bottom of spliced pole (4) and the top fixed connection of telescopic link (23), the bottom of telescopic link (23) and the lower fixed surface of connecting cylinder (2) inner wall are connected.

4. The core mould capable of adjusting the wall thickness of the plastic pipe on line according to claim 1, wherein: the outer surface of the clamping block (11) is provided with an elastic component (13), the other end of the elastic component (13) is fixedly connected with the inner wall of the groove (12), and the two grooves (12) on the lower side are respectively arranged on the left side surface and the right side surface of the same placing block (9).

5. The core mould capable of adjusting the wall thickness of the plastic pipe on line according to claim 1, wherein: the inner wall of the neck ring mold (1) is provided with a magnetic plate (3), the fixture block (11) has magnetism, and the magnetism of the fixture block (11) is opposite to that of the magnetic plate (3).

6. The core mould capable of adjusting the wall thickness of the plastic pipe on line according to claim 1, wherein: the outer surface of the threaded cylinder (16) is provided with a first bearing (17), and the first bearing (17) is arranged on the lower surface of the inner wall of the connecting cylinder (2).

7. The core mould capable of adjusting the wall thickness of the plastic pipe on line according to claim 1, wherein: the size of the first core die body (5), the size of the second core die body (6) and the size of the third core die body (7) correspond to the size of the neck ring die (1), and the first core die body (5), the second core die body (6) and the third core die body (7) are all in a truncated cone shape.