CN211307315U

CN211307315U - But extrusion tooling structure of quick replacement specification

Info

Publication number: CN211307315U
Application number: CN201922260383.7U
Authority: CN
Inventors: 王章林; 徐林智; 陈智勇; 林先凯
Original assignee: Yonggao Co Ltd
Current assignee: Era Co Ltd
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-08-21
Anticipated expiration: 2029-12-16

Abstract

The utility model provides a but extrusion tooling structure of quick replacement specification belongs to mould technical field. The technical problem that the existing extrusion die cannot meet or needs to replace the whole neck mold when the outer diameter of a produced pipe needs to be adjusted, and operation is not convenient is solved. The extrusion die structure capable of rapidly changing the specification comprises a die and a rear core rod, wherein the front end of the rear core rod is detachably connected with a front core rod, the die comprises a front module and a rear module which are detachably connected along the axial direction, the front module and the rear module are both in a cylindrical shape, and an annular channel for pipe extrusion molding is formed between the front module and the front core rod. The utility model discloses only need when the external diameter size of needs adjustment tubular product pull down the front module of changing different bores with the smaller front module of size can, it is more convenient laborsaving to operate.

Description

But extrusion tooling structure of quick replacement specification

Technical Field

The utility model belongs to the technical field of the mould, a but extrusion tooling structure of quick replacement specification is related to.

Background

The plastic is widely applied, and the plastic is applied to pipes, floors, furniture, electric appliances, medical appliances and articles for daily use everywhere. With the continuous and steady development of economy in China, the market demand for plastic products also presents a steady rising situation.

The plastic pipe is used as a product with huge use amount in plastic products, common plastic pipe production equipment is a single-screw pipe extruder and a double-screw pipe extruder, the extruder comprises a charging barrel, a machine head, a sizing, a cooling, a drawing, a cutting and the like, a neck mold and a core rod are the most important components of the machine head, the neck mold generally determines the outer diameter of the extruded pipe, and the matching of the core rod and the neck mold determines the wall thickness range of the pipe. When producing pipe products with different specifications, the whole neck mold and core rod are usually required to be replaced, and the process has the defects of high operation intensity of workers, long consumed time, high danger, high equipment capacity loss and the like.

The extrusion die of an online conversion tubular product thickness that the bulletin number of authorizing is CN202753388U includes plug, adapter and bush, and the appearance of plug is coniform, and the center of terminal surface is equipped with the bolt hole before the plug, and adapter one end is straight face, and the other end is equipped with outer screwed joint, and outer screwed joint cooperatees with the bolt hole on the plug, and the bush is hollow cylindrical structure, the adapter have multiple external diameter size structure.

Above-mentioned mould structure can change plug size on line, still has the weak point when: the whole neck mold can not be met or needs to be replaced when the outer diameter of the produced pipe needs to be adjusted, and the operation is not convenient.

Disclosure of Invention

The utility model discloses to the above-mentioned problem that prior art exists, but provide an extrusion tooling structure of quick replacement specification, the utility model aims to solve the technical problem that: how to improve the simple operation when extrusion tooling specification is changed.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides an extrusion tooling structure of but quick replacement specification, includes bush and back plug, the front end of back plug can be dismantled and is connected with preceding plug, its characterized in that, the bush includes can dismantle preceding module and the back module of connection along the axial, preceding module and back module all are the tube-shape, form between this preceding module and the preceding plug and supply tubular product extrusion moulding's annular channel.

The neck ring mold is used for limiting the outline size of the outer edge of the extruded pipe fitting, the rear core rod is arranged in the inner cavity of the neck ring mold and can evenly distribute injection molding fluid, and the size of the inner edge of the extruded pipe fitting can be changed by replacing the front core rod. Through setting up the bush including dismantling the preceding module and the back module of connection, form annular channel between messenger's preceding module and the preceding mandrel, like this when the external diameter size of needs adjustment tubular product only need with the preceding module that the size is littleer pull down change different bore the preceding module can, the operation is convenient laborsaving more.

In the above-mentioned extrusion die structure capable of changing specification rapidly, the rear end of the front core rod is screwed with the rear core rod, the front end of the front core rod extends out of the front module, and the front end of the front core rod is provided with a screwing strip. Through the rear end and the back plug spiro union cooperation of setting preceding plug and the front end setting of plug in the front of twisting strip, thereby accessible like this when dismantling or install preceding plug such as instrument such as spanner with twist the strip cooperation and rotate from the mould outside control preceding plug conveniently to further improve the convenience of changing.

In the above-mentioned extrusion die structure with the specification capable of being replaced quickly, the front module and the rear module are respectively provided with a mounting hole extending along the front-rear direction, and a screw is used for connecting the front module and the rear module through the mounting holes. Through the mounting hole that extends around setting up on preceding module and back module, accessible screw and mounting hole cooperation realize the connection to preceding module and back module like this, connect reliably and dismantle convenient.

In the above extrusion die structure with a quick replaceable specification, the rear core rod is in a tapered shape with a small front part and a large rear part, the rear end of the front core rod is provided with a tapered transition section, and the transition section and the surface of the rear core rod are in smooth transition. Aiming at a front core rod with a smaller product pipe diameter, the rear core rod is arranged to be in a cone shape with a smaller front part and a larger rear part, and a cone-shaped transition section is arranged at the rear end of the front core rod to be in smooth transition with the surface of the rear core rod, so that the resistance of the front core rod to injection molding fluid can be reduced, and the injection molding fluid can smoothly enter an annular channel.

In the above-mentioned extrusion die structure capable of changing specification rapidly, the inner edge surface of the rear module is in a conical surface shape adapted to the shape of the rear core rod, and the inner edge surface of the rear end of the front module is in a flared shape and is in smooth transition with the inner edge surface of the rear module. The inner edge surface of the rear module is in a conical surface shape and is matched with the shape of the rear core rod, and the inner edge surface of the rear end of the front module is in a flaring shape and is in smooth transition with the inner edge surface of the rear module, so that the resistance of the front module to injection molding fluid can be reduced, and the injection molding fluid can be further ensured to smoothly enter the annular channel.

In the above described quick change format extrusion die arrangement, the maximum diameter dimension of the transition section is less than the minimum diameter dimension of the inner edge of the front die block. The maximum diameter size through setting up the changeover portion is less than the minimum diameter size of front module, can not receive the restriction of front module like this when changing preceding plug alone, guarantees to change smoothly convenient.

Compared with the prior art, the utility model has the advantages as follows:

this but extrusion tooling structure of quick replacement specification is through setting up the bush including dismantling the preceding module and the back module of connection, forms annular channel between module and the preceding mandrel before making, only need when the external diameter size of needs adjustment tubular product pull down the preceding module that changes different bores with the less preceding module of size like this can, the operation is convenient laborsaving more.

Drawings

Fig. 1 is a schematic perspective view of a screw-removed structure according to an embodiment.

Fig. 2 is a schematic cross-sectional structure diagram of the first embodiment.

FIG. 3 is a schematic cross-sectional view of the second embodiment with the screws removed.

Fig. 4 is an exploded view of the second embodiment with the screws hidden.

In the figure, 1, a die; 11. a front module; 12. a rear module;

2. a rear core rod;

3. a front core rod; 31. screwing the strips; 32. a transition section;

4. an annular channel; 5. mounting holes; 6. and (4) screws.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

The first embodiment is as follows:

as shown in fig. 1 and 2, the extrusion mold structure capable of changing specification rapidly includes a neck ring mold 1 and a rear core rod 2, the front end of the rear core rod 2 is detachably connected with a front core rod 3, the neck ring mold 1 includes a front module 11 and a rear module 12 which are detachably connected along an axial direction, both the front module 11 and the rear module 12 are in a cylindrical shape, and an annular channel 4 for pipe extrusion molding is formed between the front module 11 and the front core rod 3. The neck ring mold 1 is used for limiting the outline size of the outer edge of the extruded pipe fitting, the rear core rod 2 is arranged in the inner cavity of the neck ring mold 1 and can evenly divide injection molding fluid, and the size of the inner edge of the extruded pipe fitting can be changed by replacing the front core rod 3. Through setting up bush 1 including dismantling preceding module 11 and the back module 12 of connection, make and form annular channel 4 between preceding module 11 and the preceding mandrel 3, like this when the external diameter size of needs adjustment tubular product only need with the less preceding module 11 of size pull down change different bore preceding module 11 can, the operation is convenient laborsaving more. Further, the rear end of the front core rod 3 is screwed with the rear core rod 2, the front end of the front core rod 3 extends out of the front module 11, and the front end of the front core rod 3 is provided with a screw bar 31. Through setting up the rear end of preceding plug 3 and the spiro union of back plug 2 and set up at the front end of preceding plug 3 and twist strip 31, thereby accessible when dismantling or installation preceding plug 3 such as spanner and twist strip 31 cooperation and rotate preceding plug 3 from the mould outside convenient control to the convenience of change is further improved. The front module 11 and the rear module 12 are respectively provided with four mounting holes 5 extending in the front-rear direction, the mounting holes 5 are uniformly arranged along the circumferential direction of the front module 11 and the rear module 12, and the screws 6 connect the front module 11 and the rear module 12 through the mounting holes 5. Through set up the mounting hole 5 that extends around on front module 11 and back module 12, accessible screw 6 realizes being connected front module 11 and back module 12 with the cooperation of mounting hole 5 like this, connects reliably and dismantles conveniently. The rear core rod 2 is in a conical shape with a small front part and a large rear part, the inner edge surface of the rear module 12 is in a conical surface shape matched with the shape of the rear core rod 2, the front core rod 3 is in a substantially straight column shape and the inner side wall of the front module 11 is in a substantially straight column shape aiming at a pipe fitting product with a large outer diameter and a large inner diameter.

Example two:

as shown in fig. 3 and 4, the present embodiment is substantially the same as the first embodiment, except that: the rear core rod 2 is in a cone shape with a small front part and a big rear part, the rear end of the front core rod 3 is provided with a cone-shaped transition section 32, and the transition section 32 is smoothly transited with the surface of the rear core rod 2. Aiming at a front core rod 3 with a smaller product pipe diameter, the rear core rod 2 is arranged to be in a cone shape with a smaller front part and a larger rear part, and a cone-shaped transition section 32 is arranged at the rear end of the front core rod 3 to be in smooth transition with the surface of the rear core rod 2, so that the resistance of the front core rod 3 to injection molding fluid can be reduced, and the injection molding fluid can smoothly enter an annular channel 4. The inner edge surface of the rear module 12 is in a conical surface shape matched with the shape of the rear core rod 2, and the inner edge surface of the rear end of the front module 11 is in a flaring shape and is in smooth transition with the inner edge surface of the rear module 12. The inner edge surface of the rear module 12 is in a conical surface shape and is matched with the shape of the rear core rod 2, and the inner edge surface of the rear end of the front module 11 is in a flaring shape and is in smooth transition with the inner edge surface of the rear module 12, so that the resistance of the front module 11 to injection fluid can be reduced, and the injection fluid can be further ensured to smoothly enter the annular channel 4. Preferably, the maximum diametrical dimension of the transition section 32 is smaller than the minimum diametrical dimension of the inner edge of the front module 11. By setting the maximum diameter of the transition section 32 to be smaller than the minimum diameter of the front mold block 11, the front core rod 3 can be replaced independently without being limited by the front mold block 11, and smooth and convenient replacement is ensured.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides an extrusion tooling structure of but quick replacement specification, includes bush (1) and back plug (2), the front end of back plug (2) can be dismantled and is connected with preceding plug (3), its characterized in that, bush (1) is including dismantling preceding module (11) and back module (12) of connection along the axial, preceding module (11) and back module (12) all are the tube-shape, form between this preceding module (11) and preceding plug (3) and supply tubular product extrusion moulding's annular channel (4).

2. The extrusion die structure capable of changing specification rapidly according to claim 1, characterized in that the rear end of the front core rod (3) is screwed with the rear core rod (2) and the front end of the front core rod (3) extends out of the front module (11), and the front end of the front core rod (3) is provided with a twisted strip (31).

3. A quick-change format extrusion die structure according to claim 1, wherein the front die block (11) and the rear die block (12) are provided with mounting holes (5) extending in the front-rear direction, and screws (6) connect the front die block (11) and the rear die block (12) through the mounting holes (5).

4. A quick-change extrusion die structure according to claim 1, 2 or 3, characterized in that the rear core rod (2) is in a cone shape with a small front part and a big rear part, the rear end of the front core rod (3) is provided with a transition section (32) in the cone shape, and the transition section (32) is smoothly transited with the surface of the rear core rod (2).

5. The extrusion die structure capable of changing specifications rapidly as claimed in claim 4, wherein the inner edge surface of the rear module (12) is in a conical surface shape adapted to the shape of the rear core rod (2), and the inner edge surface of the rear end of the front module (11) is in a flared shape and is in smooth transition with the inner edge surface of the rear module (12).

6. A quick change format extrusion die structure according to claim 4, characterized in that the maximum diameter dimension of the transition section (32) is smaller than the minimum diameter dimension of the inner edge of the front die block (11).