CN204977432U

CN204977432U - Plastic tube flaring die

Info

Publication number: CN204977432U
Application number: CN201520736595.7U
Authority: CN
Inventors: 孙建凯
Original assignee: Hebei Wanlitai Live Pipe Co Ltd
Current assignee: Hebei Wanlitai Live Pipe Co Ltd
Priority date: 2015-09-11
Filing date: 2015-09-11
Publication date: 2016-01-20
Anticipated expiration: 2025-09-11

Abstract

The utility model provides a plastic tube flaring die includes: leading in part, a pedestal. With the first dabber that leading in part connects, with the second dabber that the base is connected, horizontal first dabber with flaring slider between the second dabber, with the flaring slider is connected, control the flaring slider protruding with the pull rod that contracts returns, the cover is in the second spindle, one end can with the base offsets, the other end can with the slide steering cover that first dabber offseted, slide steering cover with first outside diameter of mandrel equals. Using the plastic tube flaring die that this application provided, can avoiding the pipe inner wall to be drawn and decrease, the pipe can accurately overlap on plastic tube flaring die fast simultaneously.

Description

A kind of plastic pipe flaring die

Technical field

The application relates to plastic pipe manufacturing and processing equipment field, particularly a kind of plastic pipe flaring die.

Background technology

When carrying out enlarging operation to plastic pipe, first gripped the pipe one end being in elastomeric state by fasteners such as lathes, flaring die is pushed ahead and is inserted the stiff end of pipe.Protruding with the enlarging plastotype realized pipe by controlling enlarging slide block after flaring die insertion pipe, by cooling device, the pipe after enlarging is shaped afterwards.

Existing plastic pipe flaring die, pushing ahead in the process inserting tube cavity, enlarging slide block is directly exposed to the external world.When pipe passes through the top layer of plastic pipe flaring die, enlarging slide block is in retracted state, but when enlarging slide block is in retracted state, the region at enlarging slide block place certainly exists section and dead angle, when this causes tube wall and plastic pipe flaring die surface that relative displacement occurs, the frictional force of tube wall and die surface increases, and causes tube wall by the region scratching at enlarging slide block place, can affect product quality.

Utility model content

The object of the application is to provide a kind of plastic pipe flaring die, and can realize tube wall can not by die surface scratching.

For achieving the above object, the utility model takes following technical scheme:

A kind of plastic pipe flaring die, comprising:

Introduction segment;

Base;

The first mandrel be connected with described introduction segment;

The second mandrel be connected with described base;

Horizontal enlarging slide block between described first mandrel and described second mandrel;

Being connected with described enlarging slide block, controlling the protruding pull bar with bouncing back of described enlarging slide block;

Be enclosed within described second mandrel, one end can offset with described base, the slide-and-guide cover that the other end can offset with described first mandrel, and described slide-and-guide cover is equal with the external diameter of described first mandrel.

Preferably, comprising:

Described first mandrel is coaxially connected with described second mandrel.

Preferably, be slidably connected by lubricating oil between described slide-and-guide cover and described second mandrel.

Preferably, the external diameter of described first mandrel is greater than the external diameter of pipe to be processed.

Preferably, described slide-and-guide cover also comprises:

Be enclosed within described second mandrel, overlap with described slide-and-guide the guide holder that end is connected; Described guide holder diameter is greater than the external diameter of described slide-and-guide cover.

Preferably, the number of described enlarging slide block is 8.

Preferably, the diameter of described introduction segment increases from head end gradually to end.

Compared with prior art, the application comprises following advantage:

The plastic pipe flaring die that the application provides, mainly comprises introduction segment, base, the first mandrel, the second mandrel, enlarging slide block, pull bar, slide-and-guide cover.When plastic pipe flaring die entirety advances to tube cavity, enlarging slide block is in retracted state, and meanwhile, slide-and-guide cover offsets with the first mandrel.Because slide-and-guide cover is equal with the external diameter of the first mandrel, the gap therefore between slide-and-guide cover and the contact surface of the first mandrel is minimum, can ignore.Therefore pipe can be enclosed within smoothly to slight drag on slide-and-guide cover after by the first mandrel, and tube wall can not be subject to scratching.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Structural representation under the enlarging slide block raised position of the plastic pipe flaring die that Fig. 1 provides for the application;

Structural representation under state that the slide-and-guide of the plastic pipe flaring die that Fig. 2 provides for the application overlaps and the first mandrel offsets;

Fig. 3 is the axial section of the pipe after the plastic pipe flaring die enlarging that provides through the application.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

Refer to Fig. 1 to Fig. 3, the structural representation under the enlarging slide block raised position of the plastic pipe flaring die that Fig. 1 provides for the application; Structural representation under state that the slide-and-guide of the plastic pipe flaring die that Fig. 2 provides for the application overlaps and the first mandrel offsets; Fig. 3 is the axial section of the pipe after the plastic pipe flaring die enlarging that provides through the application.

This application provides a kind of plastic pipe flaring die, mainly comprise introduction segment 1, base 2, first mandrel 3, second mandrel 4, enlarging slide block 5, pull bar 6 and slide-and-guide cover 7.

Wherein, introduction segment 1 is the part first inserting the plastic pipe inside for the treatment of enlarging, and introduction segment 1 end is connected with the head end of the first mandrel 3.Introduction segment 1 can be designed as diameter and is less than the cylindrical of ips, also can be designed as the hemicone of increasing diameter.In the present embodiment, the diameter of introduction segment 1 is cumulative design, by being cumulative form by the diameter design of introduction segment 1, introduction segment 1 can be made to be inserted into more quickly and accurately in tube cavity.

First mandrel 3 is cylindrical, and diameter is more bigger than the external diameter of the mouth of pipe treating enlarging, and can make pipe hard-pressed bale on the surface of the first mandrel 3.Second mandrel 4 is coaxially connected with the first mandrel 3, between the first mandrel 3 and the second mandrel 4, arrange enlarging slide block 5.

Pull bar 6 is connected with enlarging slide block 5 through the second mandrel 4, and under the control of pull bar 6, enlarging slide block 5 is showing plane for datum level realizing protruding and retraction with the first mandrel 3.

When enlarging slide block 5 is in raised position, enlarging slide block 5 entirety defines the patty consistent with the flare form that pipe is preset, and the dimensional parameters of enlarging that the dimensional parameters of enlarging slide block 5 and pipe are preset is identical; When enlarging slide block 5 is in retracted state, the maximum gauge of enlarging slide block 5 entirety is less than the external diameter of the first mandrel 3.

It should be noted that, the first mandrel 3, second mandrel 4, enlarging slide block 5 and slide-and-guide cover 7 is same central shaft.

Enlarging slide block 5 can be divided into 8 small slide blocks, mainly through arranging slideway and scarf realizes sliding.The principle of confounding of enlarging slide block belongs to prior art, does not repeat at this.

The end of the second mandrel 4 is fixedly connected with base 2, and on the second mandrel 4, cover has slide-and-guide sliding back and forth to overlap 7.The external diameter of slide-and-guide cover 7 is equal with the external diameter of the first mandrel 3.When enlarging slide block 5 is in retracted state, slide-and-guide overlaps 7 head ends and can cover enlarging slide block 5 and offset with the tail end section of the first mandrel 3.Slide-and-guide overlaps 7 ends and can offset with base 2.

Slide-and-guide cover 7 can realize sliding by ball on the second mandrel 4, also can direct contact slide, and when direct contact slide, slide-and-guide overlaps 7 and second and mandrel 4 top layer scribbles lubricating oil.

Can arrange guide holder 701 at the end of slide-and-guide cover 7, guide holder 701 is enclosed within the second mandrel 4.The maximum gauge of guide holder 701 is greater than the external diameter of slide-and-guide cover 7, to ensure that the port of pipe can be against on guide holder 701.

It should be noted that, slide-and-guide cover 7 need meet with the Design of length of guide holder 701: when guide holder 701 offsets with base 2, enlarging slide block 5 can intactly outwardly convex, and when slide-and-guide cover 7 offsets with the first mandrel 3, slide-and-guide overlaps 7 can cover enlarging slide block 5 comprehensively.

Meanwhile, slide-and-guide cover 7 and guide holder 701 equal the width of enlarging slide block 5 to the distance of base movement.

When carrying out enlarging to pipe, first will treat that pipe one end of enlarging grips, plastic pipe flaring die is pushed ahead subsequently.Introduction segment 1 inserts tube cavity at first, and pipe wraps on the top layer of the first mandrel 3 subsequently.In the process that plastic pipe flaring die is pushed ahead, enlarging slide block 5 is in retracted state, and the tail end section of slide-and-guide cover 7 and the first mandrel 3 offsets.

Because slide-and-guide cover 7 is equal with the external diameter of the first mandrel 3, so when slide-and-guide cover 7 and first tail end section of mandrel 3 offset, slide-and-guide cover the table plane of 7 and the table plane of the first mandrel 3 are in same level position, and the first mandrel 3 and slide-and-guide overlap 7 and define one and show the smooth entirety of coplanar flat.Further, when the slide-and-guide cover head end cross section of 7 and the tail end section of the first mandrel 3 cut smooth, the contact gap of slide-and-guide cover 7 and the first mandrel 3 is minimum, can ignore.

Thus, pipe can be enclosed within smoothly to slight drag on slide-and-guide cover 7 after passing the first mandrel 3, and tube wall can not be subject to any scratching.

Above slide-and-guide cover 7, can optoelectronic switch be set, to control the movable length of pipe on slide-and-guide cover.In the process that pipe is pushed ahead, when pipe arrives the position of optoelectronic switch setting, pipe halts, and now pipe is clamped, and control guide holder 701 and slide-and-guide cover 7 are oppositely withdrawn from and guide holder 701 and base 2 are offseted.Now, pull bar 6 pushes away forward to control enlarging slide block 5 outwardly convex.Because when carrying out enlarging operation, pipe is in elastomeric state, and pipe covers enlarging slide block 5 comprehensively, therefore when enlarging slide block 5 outwardly convex, can carry out enlarging plastotype to pipe.Corresponding cooling and shaping operation is carried out after the 5 pairs of pipe enlargings of enlarging slide block complete.After sizing completes, pull bar 6 is oppositely withdrawn, and control enlarging slide block 5 and bounce back, plastic pipe flaring die integral inverted is to withdrawing afterwards, and an enlarging operation completes.

It should be noted that, the plastic pipe flaring die that the application provides is mainly for PVC-O pipeline and other thermal shrinkage pipe materials.

To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims

1. a plastic pipe flaring die, is characterized in that, comprising:

Introduction segment;

Base;

The first mandrel be connected with described introduction segment;

The second mandrel be connected with described base;

2. plastic pipe flaring die according to claim 1, is characterized in that, comprising:

Described first mandrel is coaxially connected with described second mandrel.

3. plastic pipe flaring die according to claim 2, is characterized in that, is slidably connected between described slide-and-guide cover and described second mandrel by lubricating oil.

4. plastic pipe flaring die according to claim 1, is characterized in that, the external diameter of described first mandrel is greater than the external diameter of pipe to be processed.

5. plastic pipe flaring die according to claim 1, is characterized in that, described slide-and-guide cover also comprises:

6. plastic pipe flaring die according to claim 1, is characterized in that, the number of described enlarging slide block is 8.

7. plastic pipe flaring die according to claim 1, is characterized in that, the diameter of described introduction segment increases from head end gradually to end.