CN210552904U

CN210552904U - Extrusion die with adjustable pipe diameter

Info

Publication number: CN210552904U
Application number: CN201921070409.5U
Authority: CN
Inventors: 张春涛
Original assignee: Tongwei Technology Co Ltd Tongling City
Current assignee: Tongwei Technology Co Ltd Tongling City
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-05-19
Anticipated expiration: 2029-07-09

Abstract

The utility model discloses a pipe diameter adjustable extrusion tooling, including fixed mould, bush, dabber, rotation axle sleeve and rotation lid, rotate the lid with the fixed mould rotates to be connected, the fixed mould cover is established the outside of rotation axle sleeve, it extends to rotate the axle sleeve be provided with the gear on the one end outer wall of fixed mould, be provided with the driven gear who matches with the gear on the inner wall of rotation lid, the outer wall of dabber with form the crowded chamber between the inner wall of fixed mould, dabber front end outer wall with form between the inner wall of bush and extrude the chamber, be provided with a supporting bench on the middle part outer wall of dabber, a supporting bench with it rotates the connection to rotate axle sleeve screw thread, the dabber is in can follow under the drive of rotation axle sleeve rotate the axial reciprocating motion of axle sleeve. The gear is meshed to drive the rotating shaft sleeve to rotate through the rotating cover, so that the core shaft is moved left and right, the size of an extrusion opening of the die is changed, and the die is multifunctional.

Description

Extrusion die with adjustable pipe diameter

Technical Field

The utility model relates to the technical field of mold, concretely relates to pipe diameter adjustable extrusion tooling.

Background

The plastic extrusion die is a die for plastic tube forming, is arranged at the output end of an extruding machine, and is an important component in a plastic tube production line. At present, a plurality of pipe extrusion dies are available in the market, and various single-layer pipes, double-layer pipes and other pipes applied to various fields can be processed.

However, the existing plastic extrusion dies can only form a plastic pipe with one pipe diameter, and cannot realize the function of one die for multiple purposes, so that the practicability and the applicability are not strong. To this end, chinese patent CN205185269U discloses a plastic extrusion die, which includes a fixed die and an outlet die, the fixed die and the outlet die are detachably connected to each other to form a die sleeve, a forming core rod is disposed in the die sleeve, the outer wall of the forming core rod and the inner wall of the die sleeve jointly form a forming cavity, the forming cavity includes an extruding cavity, a shunting cavity and an extruding cavity which are sequentially communicated, the forming core rod can move along the axial direction of the die sleeve to and fro to adjust the size of the extruding cavity, and the portion of the forming core rod corresponding to the extruding cavity is in a circular truncated cone shape. In the patent, a user can adjust the size of the extrusion opening of the die by sliding or rotating the forming core rod, but the user can only slide or rotate the forming core rod by operating at the front end of the forming core rod, the surface of the front end of the forming core rod is smooth, and the actual operation is inconvenient.

SUMMERY OF THE UTILITY MODEL

To the problem in the above-mentioned technical background, the utility model aims at providing a diameter of pipe adjustable extrusion tooling, easy operation is convenient, realizes that a mould is multi-purpose.

In order to realize the above purpose, the utility model discloses a technical scheme be:

an extrusion die with adjustable pipe diameter comprises a fixed die, a mouth die, a mandrel, a rotating shaft sleeve and a rotating cover, the fixed die and the mouth die are detachably connected to form a die sleeve, the mandrel is arranged in the center of the die sleeve, the rotating cover is rotatably connected with the fixed die, the fixed die is sleeved outside the rotating shaft sleeve, a gear is arranged on the outer wall of one end of the rotating shaft sleeve extending out of the fixed die, a driven gear matched with the gear is arranged on the inner wall of the rotating cover, an extrusion cavity is formed between the outer wall of the mandrel and the inner wall of the fixed die, an extrusion cavity is formed between the outer wall of the front end of the mandrel and the inner wall of the mouth die, a supporting table is arranged on the outer wall of the middle part of the mandrel, the supporting table is in threaded rotary connection with the rotary shaft sleeve, the mandrel can reciprocate along the axial direction of the rotating shaft sleeve under the driving of the rotating shaft sleeve.

Further, a boss is arranged on the supporting table, an external thread is arranged on the boss, an annular groove for placing the boss is formed in the inner wall of the rotating shaft sleeve, and an internal thread matched with the external thread is arranged at the bottom of the annular groove.

Further, springs are disposed at equal intervals on both sides of the annular groove.

Furthermore, the support platform is provided with axially distributed flow holes at equal intervals.

Furthermore, an annular sliding groove is formed in the rotating cover, and a clamping table clamped with the annular sliding groove is arranged on the fixed die.

Furthermore, a clamping groove communicated with the annular sliding groove is formed in the rotating cover.

Compared with the prior art, the utility model has the advantages of it is following:

the utility model discloses in set up the rotation axle sleeve in the fixed mould, utilize the gear interlock to drive the rotation of rotation axle sleeve through rotating the lid, and then realize the removal of dabber under the drive of rotation axle sleeve, reach the purpose that changes the size of mould extrusion opening, realize that a mould is multi-purpose, according to the demand user only need rotate the rotation lid can obtain the plastic tubing of different pipe diameters and wall thickness, easy operation is convenient; simultaneously, set up the vibrations that the spring brought when being used for slowing down the dabber and removing in the both sides of annular groove, avoid causing mould damage or dabber offset because of the removal of dabber.

Drawings

FIG. 1 is a schematic structural view of an extrusion die with adjustable pipe diameter according to the present invention;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1;

fig. 3 is a schematic structural view of the middle rotating cover of the present invention.

In the figure: 1-fixing a mould; 2-opening die; 3-a mandrel; 4-rotating the shaft sleeve; 5-rotating the cover; 6-gear; 7-a driven gear; 8, supporting the table; 11-a boss; 12-a flow-through hole; 41-annular groove; 42-a spring; 51-an annular chute; 52-a clamping table; 53-card slot; 101-squeezing into a cavity; 102-extrusion chamber.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1-3, an extrusion die with adjustable pipe diameter comprises a fixed die 1, a neck mold 2, a mandrel 3, a rotating shaft sleeve 4 and a rotating cover 5, wherein the fixed die 1 and the neck mold 2 are detachably connected to form a die sleeve, the mandrel 3 is arranged in the center of the interior of the die sleeve, the rotating cover 5 is rotatably connected with the fixed die 1, the fixed die 1 is sleeved outside the rotating shaft sleeve 4, a gear 6 is arranged on the outer wall of one end of the rotating shaft sleeve 4, which extends out of the fixed die 1, a driven gear 7 matched with the gear 6 is arranged on the inner wall of the rotating cover 5, an extrusion cavity 101 is formed between the outer wall of the mandrel 3 and the inner wall of the fixed die 1, an extrusion cavity 102 is formed between the outer wall of the front end of the mandrel 3 and the inner wall of the neck mold 2, a support platform 8 is arranged on the outer wall of the middle part of the mandrel, the mandrel 3 can reciprocate along the axial direction of the rotating shaft sleeve 4 under the driving of the rotating shaft sleeve 4.

The working principle and the process are as follows: set up in fixed mould 1 and rotate axle sleeve 4, utilize the gear interlock between gear 6 and the driven gear 7 to drive the rotatory rotation that rotates axle sleeve 4 through rotatory rotation lid 5, and then realize under the drive that rotates axle sleeve 4 that the dabber 3 controls, control along with the dabber 3 and control, the size of extruding chamber 102 will grow gradually or diminish, reach the purpose that changes the mould and extrude the mouth size, it is multi-purpose to realize a mould, the user only needs to rotate rotation lid 5 and can obtain the plastic tubing of different pipe diameters and wall thickness according to the demand, and easy operation is convenient.

In this embodiment, a boss 11 is arranged on the support platform 8, an external thread is arranged on the boss 11, an annular groove 41 for placing the boss 11 is arranged on the inner wall of the rotary shaft sleeve 4, and an internal thread matched with the external thread is arranged at the bottom of the annular groove 41.

Wherein, the length of the annular groove 41 is 2-3 times of the length of the boss 11, so that the mandrel 3 can reciprocate left and right within the length range of the annular groove 41.

Through external screw thread and interior screw-thread fit's mode of setting, can drive the straight reciprocating motion of dabber 3 through the rotation of rotating axle sleeve 4, convenient operation, labour saving and time saving more.

In the present embodiment, springs 42 are disposed at equal intervals on both sides of the annular groove 41.

Wherein, the setting of spring 42 avoids boss 11 direct contact to rotate axle sleeve 4, helps slowing down the vibrations that bring when dabber 3 reciprocating motion, avoids causing mould damage or dabber offset because of the removal of dabber.

In this embodiment, the support base 8 is provided with flow holes 12 distributed in the axial direction at equal intervals. Facilitating the flow of plastic material within the extrusion chamber 101.

In the present embodiment, the rotating cover 5 is provided with an annular slide groove 51, and the fixed die 1 is provided with a retainer 52 that engages with the annular slide groove 51.

A locking groove 53 communicating with the annular sliding groove 51 is provided on the rotary cover 5.

The clamping grooves 53 are distributed horizontally, the groove widths of the clamping grooves 53 and the annular sliding grooves 51 are slightly larger than the width of the clamping table 52, and the groove depths of the clamping grooves 53 and the annular sliding grooves 51 are also slightly larger than the height of the clamping table 52.

When the rotating cover 5 is attached to the fixed mold 1, the abutment 52 on the fixed mold 1 is slid in the engaging groove 53, the abutment 52 is slid into the annular sliding groove 51, and the rotating cover 5 is rotated with respect to the fixed mold 1.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a pipe diameter adjustable extrusion tooling, includes fixed mould (1), bush (2), dabber (3), rotates axle sleeve (4) and rotates lid (5), fixed mould (1) can be dismantled with bush (2) and be connected formation die sleeve, dabber (3) set up the inside center of die sleeve, its characterized in that: the rotating cover (5) is rotationally connected with the fixed die (1), the fixed die (1) is sleeved outside the rotating shaft sleeve (4), a gear (6) is arranged on the outer wall of one end of the rotating shaft sleeve (4) extending out of the fixed die (1), a driven gear (7) matched with the gear (6) is arranged on the inner wall of the rotating cover (5), an extrusion cavity (101) is formed between the outer wall of the mandrel (3) and the inner wall of the fixed die (1), an extrusion cavity (102) is formed between the outer wall of the front end of the mandrel (3) and the inner wall of the neck ring mold (2), a supporting table (8) is arranged on the outer wall of the middle part of the mandrel (3), the supporting table (8) is in threaded rotary connection with the rotary shaft sleeve (4), the mandrel (3) can reciprocate along the axial direction of the rotating shaft sleeve (4) under the driving of the rotating shaft sleeve (4).

2. The extrusion die with the adjustable pipe diameter as claimed in claim 1, wherein a boss (11) is arranged on the support platform (8), an external thread is arranged on the boss (11), an annular groove (41) for placing the boss (11) is arranged on the inner wall of the rotating shaft sleeve (4), and an internal thread matched with the external thread is arranged at the bottom of the annular groove (41).

3. The extrusion die with adjustable pipe diameter as claimed in claim 2, wherein springs (42) are arranged on two sides of the annular groove (41) at equal intervals.

4. An extrusion die with adjustable pipe diameter according to claim 2, characterized in that the support table (8) is provided with axially distributed flow holes (12) at equal intervals.

5. The extrusion die with the adjustable pipe diameter according to claim 1, wherein the rotating cover (5) is provided with an annular sliding groove (51), and the fixed die (1) is provided with a clamping table (52) clamped with the annular sliding groove (51).

6. The extrusion die with the adjustable pipe diameter as claimed in claim 5, wherein a clamping groove (53) communicated with the annular sliding groove (51) is arranged on the rotating cover (5).