CN216760763U

CN216760763U - Water supply and drainage pipe extrusion die assembly and extrusion die thereof

Info

Publication number: CN216760763U
Application number: CN202123040201.9U
Authority: CN
Inventors: 余文; 王振华
Original assignee: Heshan Liansu Industrial Development Co Ltd
Current assignee: Heshan Liansu Industrial Development Co Ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-06-17
Anticipated expiration: 2031-12-02

Abstract

The utility model relates to the technical field of extrusion dies for water supply and drainage pipes, and provides an extrusion die assembly for a water supply and drainage pipe, which comprises a shrinkage sleeve, a neck die and a pressing plate, wherein one end of the neck die is inserted into the shrinkage sleeve and is positioned on one side of an extrusion port, the pressing plate is sleeved on the outer side of the neck die and is detachably connected with the end surface of the shrinkage sleeve, a plurality of uniformly distributed through holes are formed in the circumferential side wall, which is abutted to the outer side wall of the neck die, of the shrinkage sleeve, an adjusting bolt is arranged in each through hole in a penetrating manner, one end of each through hole is abutted to the outer side wall of the neck die, and a replaceable insert is further arranged in each through hole, which is sleeved outside the adjusting bolt and is in threaded connection with the inner side wall of the adjusting bolt. The utility model also provides a water supply and drainage pipe extrusion die. The extrusion die for the water supply and drainage pipe overcomes the defects that the existing extrusion die for the water supply and drainage pipe is easy to clamp and break the adjusting bolt and is difficult to maintain, is more flexible and convenient to operate in the aspect of maintenance, reduces the maintenance cost, saves the maintenance time and lightens the workload of operators.

Description

Water supply and drainage pipe extrusion die assembly and extrusion die thereof

Technical Field

The utility model relates to the technical field of water supply and drainage pipe extrusion dies, in particular to a water supply and drainage pipe extrusion die assembly and an extrusion die thereof.

Background

PVC water supply and drainage pipe products are common products in the building material market at present, and the demand is quite large. The large demand of the product corresponds relevant mould demand is also big, PVC water supply and drainage pipe extrusion tooling is when using the assembly at present stage, because the bush, the mold core, shrink sleeve probably have assembly error when the assembly, or the error of part itself, make when carrying out the water pipe and extrude, lead to the wall thickness of product uneven, the structure that is used for adjusting this kind of product wall thickness at present is through adjusting the adjusting bolt on shrink sleeve side circumference, make adjusting festival bolt atress in the bush move the mould clearance between bush and the mold core, thereby reach the purpose of adjustment product wall thickness, make the wall thickness of water pipe product extrude evenly.

The Chinese patent with publication number CN203876197U and granted announcement date of 2014, 10 and 15 discloses a structure of an extrusion die capable of adjusting the wall thickness of a pipe, which comprises a neck ring, a neck ring outer sleeve, a shrinkage sleeve and an extrusion die body, wherein the neck ring is a rotatable neck ring which is spherical, and an adjusting screw is arranged at a discharge port of the rotatable neck ring; the adjusting screw adjusts the rotatable die to move up and down. The utility model adopts the spherical rotatable neck ring to replace the traditional straight plate type neck ring to realize the easy and quick adjustment of the wall thickness of the pipe, and the neck ring can be easily moved up and down with little effort to realize the adjustment of the wall thickness of the pipe.

However, a series of problems still occur in the production process of the scheme, whether the traditional method adopts the adjusting screw to adjust the screwing sleeve or utilizes the adjusting screw to adjust the rotating die according to the scheme, in the long-term heating and using process of the die, the die can be frequently blocked by some adjusting screws, the die is broken, and the die can only be detached from the production line for maintenance, so that the normal production is influenced, and the maintenance under the production line is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects that an existing water supply and drainage pipe extrusion die is easy to clamp and break an adjusting bolt and is not easy to maintain, and provides a water supply and drainage pipe extrusion die assembly and an extrusion die thereof. The utility model has more flexible and convenient operation in the aspects of maintenance, reduces the maintenance cost, saves the maintenance time and lightens the workload of operators.

In order to solve the technical problems, the utility model adopts the technical scheme that:

the utility model provides a water supply and drainage pipe extrusion die subassembly, including the shrink cover, the bush that establishes in shrink cover inside and be located extrusion opening one side is inserted to one end to and the cover is established in the bush outside and can dismantle the clamp plate of being connected with the terminal surface of shrink cover, set up a plurality of evenly distributed's through-hole on the circumference lateral wall of shrink cover and bush lateral wall looks butt, all wear to be equipped with the adjusting bolt of one end and the lateral wall butt of bush in every through-hole, still be equipped with the removable mold insert that the cover was established at adjusting bolt outside and inside wall and adjusting bolt threaded connection in the through-hole.

Like this, when production needs adjustment tubular product wall thickness, if the condition that adjusting bolt damaged appears, adopt the structure of removable mold insert formula to replace monolithic structure, need not shut down the form removal and carry out the whole maintenance of mould, the change of the removable mold insert in the accessible through-hole realizes maintaining fast, directly take out the removable mold insert that falls bad to change can, guaranteed the demand of on-line production, the operation is more convenient nimble in the aspect of the mould maintenance.

The replaceable insert can quickly solve the problem that an adjusting bolt is easy to block and rust, when the wall thickness of a product needs to be adjusted in the production process of a die, the adjusting bolt is found to be blocked or broken, only the adjusting insert needs to be directly replaced at this time, and the replaceable insert needs to be replaced in offline maintenance. The water supply and drainage pipe extrusion die assembly with the replaceable insert is convenient and quick to maintain daily, the maintenance cost is reduced, the working efficiency is improved, and the performance of the produced PVC-U drainage pipe fitting can meet the requirement standards of various performance indexes in the industry standard: such as the longitudinal shrinkage, the elongation, the impact rate and the like of the product.

Further, the bush includes the runner main part, and the one end of runner main part is equipped with annular boss, the clamp plate cover is established in the outside of runner main part, and annular boss inserts the one end of establishing the shrink sleeve and is located between shrink sleeve and the clamp plate, and certain clearance is left to one side of shrink sleeve and annular boss lateral wall butt, and certain clearance also is left to one side of clamp plate and the lateral wall butt of runner main part.

Therefore, the annular boss of the neck ring is abutted with the shrinkage sleeve through the adjusting bolt to realize the fastening of the port, and meanwhile, the inner diameter of one side of the shrinkage sleeve abutted with the outer side wall of the annular boss is larger than the outer diameter of the annular boss, so that a certain space allowance is reserved for the adjustment of the neck ring, and the wall thickness of the pipe is conveniently adjusted; the clamp plate cover is established in the runner main part outside and can dismantle with the shrink sleeve and be connected, can compress tightly annular boss in the centre, realizes fixedly, and the external diameter that the internal diameter of clamp plate is greater than the runner main part also leaves certain space allowance for the position adjustment of bush simultaneously, so not only can deal with the wall thickness adjustment demand, still can deal with the expend with heat and contract with cold effect of each structure that the high temperature of extrusion arouses in the actual production process simultaneously.

Furthermore, the through hole is a stepped through hole formed by a first cavity and a second cavity which are communicated with each other, and the caliber of the first cavity is smaller than that of the second cavity.

Furthermore, one end of the first cavity is communicated with the outer side wall of the shrink sleeve, the other end of the first cavity is communicated with the second cavity, and one end of the second cavity is communicated with the first cavity and the other end of the second cavity is communicated with the end face side wall and the inner side wall of the shrink sleeve.

Like this, when carrying out the change of removable mold insert, only need pull down the clamp plate, the removable mold insert in the second cavity exposes outside promptly, and the removable mold insert that very makes things convenient for the manual work to damage is changed, reduces the change degree of difficulty and has increased maintenance efficiency.

As a preferred scheme, the replaceable insert is a stepped insert matched with the stepped through hole in shape, threads matched with the external threads of the adjusting bolt are formed in the inner side wall of the stepped insert, and the outer side wall of the stepped insert is connected with the inner side wall of the stepped through hole.

Furthermore, the radian of the end surface of one side of the stepped insert facing the neck mold is matched with the radian of the inner side wall of the shrinkage sleeve.

Therefore, the replaceable insert is designed into an insert shape which is adaptive to the shape of the stepped through hole and has the end surface radian consistent with that of the shrinkage sleeve, so that the fitting effect of the replaceable insert and the shrinkage sleeve can be improved on one hand, and the locking strength of the replaceable insert and the adjusting bolt is improved on the other hand. When the pressing plate is damaged, the stepped insert can be ejected out of the stepped through hole after the pressing plate is detached, the stepped through hole is cleaned, and then the new stepped insert is placed in the through hole to complete replacement.

As another preferred scheme, the replaceable insert is a square insert matched with the second cavity in shape, threads matched with the external threads of the adjusting bolt are formed in the inner side wall of the square insert, and the outer side wall of the square insert is connected with the inner side wall of the second cavity.

Furthermore, the radian of the end surface of one side of the square insert facing the mouth mold is matched with the radian of the inner side wall of the shrinkage sleeve.

Like this, with removable mold insert design for with the second cavity shape suit and the mold insert shape that the terminal surface radian is unanimous with shrink sleeve terminal surface radian, when taking place to damage, the accessible is dismantled directly to take out removable mold insert from the second cavity behind the clamp plate, improves and changes efficiency.

It should be noted that the specific shape of the stepped through hole in the present invention includes, but is not limited to, the first cavity and the second cavity are both cylindrical or rectangular, or the first cavity is cylindrical and the second cavity is rectangular, or the second cavity is cylindrical and the first cavity is rectangular; the specific shape of the replaceable insert is designed according to the specific shapes of the first cavity and the second cavity, and various specific shapes can be adopted to achieve the purpose of the utility model.

Furthermore, the pressing plate is connected with the end face of the shrinkage sleeve through a plurality of bolts.

The utility model also provides a water supply and drainage pipe extrusion die which comprises a die holder, a die core, a flow distribution plate and the water supply and drainage pipe extrusion die assembly, wherein the two circumferential sides of the flow distribution plate are respectively connected with the die holder and a shrinkage sleeve, and the die core is connected with the flow distribution plate and penetrates through the middle part of an extrusion flow channel.

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

according to the utility model, the through hole for adjusting the adjusting bolt is designed on the shrinkage sleeve, the replaceable insert which is adaptive to the adjusting bolt is arranged in the through hole, the replaceable insert is used as a middle part, corresponding structural design is carried out on the neck mold and the shrinkage sleeve, the pressing plate is additionally arranged, when the adjusting bolt is damaged, the whole maintenance of the mold is carried out without stopping the machine and disassembling the mold, the quick maintenance can be realized through the replacement of the replaceable insert in the through hole, the damaged replaceable insert can be directly replaced, the demand of online production is ensured, and the operation is more convenient and flexible in the aspect of mold maintenance.

Drawings

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

FIG. 2 is a schematic structural view of a shrinkable sleeve according to embodiment 1 of the present invention;

FIG. 3 is a schematic view of the structure of FIG. 2 viewed from direction A;

FIG. 4 is a schematic view showing the structure of a die in example 1 of the present invention;

fig. 5 is a schematic structural diagram of embodiment 3 of the present invention.

The graphic symbols are illustrated as follows:

1-a shrink sleeve, 2-a die, 21-a runner main body, 22-an annular boss, 3-a pressing plate, 4-a through hole, 41-a first cavity, 42-a second cavity, 5-an adjusting bolt, 6-a replaceable insert, 7-a die holder, 8-a die core and 9-a flow distribution plate.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

Example 1

As shown in fig. 1 to 4, a water supply and drainage pipe extrusion die assembly, including shrink sleeve 1, bush 2 that establish in shrink sleeve 1 inside and be located extrusion port one side is inserted to one end, and the cover is established in the bush 2 outside and can dismantle the clamp plate 3 of being connected with shrink sleeve 1's terminal surface, shrink sleeve 1 sets up a plurality of evenly distributed's through-hole 4 on the circumference lateral wall of bush 2 lateral wall looks butt, all wear to be equipped with the adjusting bolt 5 of one end and bush 2's lateral wall butt in every through-hole 4, still be equipped with in the through-hole 4 and establish the removable mold insert 6 of establishing at adjusting bolt 5 outside and inside wall and adjusting bolt 5 threaded connection.

Like this, when production needs adjustment tubular product wall thickness, if the condition that adjusting bolt 5 damaged appears, need not shut down the form removal and carry out the whole maintenance of mould, quick maintenance is realized to the change of the removable mold insert 6 in the accessible through-hole 4, directly take out the removable mold insert 6 that falls bad and change can, guaranteed the demand of on-line production, the operation is more convenient nimble in the aspect of the mould maintenance.

The replaceable insert 6 can quickly solve the problem that the adjusting bolt 5 is easy to block and rust, when the wall thickness of a product needs to be adjusted in the production process of a die, the adjusting bolt 5 is found to be blocked or broken, only the replaceable insert 6 needs to be directly replaced at this time, and the replaceable insert 6 is also replaced for offline maintenance. The water supply and drainage pipe extrusion die assembly with the replaceable insert 6 is convenient and quick to maintain, the maintenance cost is reduced, the working efficiency is improved, and the performance of the produced PVC-U drainage pipe fitting can meet the requirements of various performance indexes in the industry standard: such as longitudinal shrinkage, tensile rate, impact rate and the like of the product, and simultaneously reduces the on-line form removal rate and improves the production efficiency by 2 to 5 percent.

As shown in fig. 1 and 4, the die 2 includes a flow channel main body 21, an annular boss 22 is disposed at one end of the flow channel main body 21, the pressing plate 3 is sleeved outside the flow channel main body 21, the annular boss 22 is inserted into one end of the shrink sleeve 1 and is located between the shrink sleeve 1 and the pressing plate 3, a certain gap is left between the shrink sleeve 1 and one side of the outer sidewall of the annular boss 22, and a certain gap is also left between the pressing plate 3 and one side of the outer sidewall of the flow channel main body 21.

Therefore, the annular boss 22 of the neck ring 2 is abutted with the shrinkage sleeve 1 through the adjusting bolt 5 to realize the fastening of the port, and meanwhile, the inner diameter of one side of the shrinkage sleeve 1 abutted with the outer side wall of the annular boss 22 is larger than the outer diameter of the annular boss 22, so that a certain space allowance is reserved for the adjustment of the neck ring 2, and the wall thickness of the pipe is conveniently adjusted; the clamp plate 3 is sleeved outside the runner main body 21 and detachably connected with the shrink sleeve 1, the annular boss 22 can be tightly pressed in the middle to realize fixation, and meanwhile, the outer diameter of the clamp plate 3, which is larger than the outer diameter of the runner main body 21, also reserves a certain allowance for position adjustment of the neck ring die 2, so that the requirement for wall thickness adjustment can be met, and meanwhile, the expansion and contraction effect of each structure caused by extruded high temperature in the actual production process can also be met.

As shown in fig. 3, the through hole 4 is a stepped through hole formed by a first cavity 41 and a second cavity 42 which are communicated with each other, and the caliber of the first cavity 41 is smaller than that of the second cavity 42.

As shown in fig. 3, one end of the first cavity 41 communicates with the outer side wall of the shrinkable sleeve 1 and the other end communicates with the second cavity 42, one end of the second cavity 42 communicates with the first cavity 41 and the other end communicates with the end side wall and the inner side wall of the shrinkable sleeve 1.

Like this, when carrying out the change of removable insert 6, only need pull down clamp plate 3, removable insert 6 in the second cavity 42 exposes externally promptly, makes things convenient for the manual work to change the removable insert 6 that damages, reduces the change degree of difficulty and has increased maintenance efficiency.

In this embodiment, the replaceable insert 6 is a square insert having a shape matching the second cavity 42, a thread matching the external thread of the adjusting bolt 5 is formed on the inner side wall of the square insert, and the outer side wall of the square insert is connected to the inner side wall of the second cavity 42.

In this embodiment, the radian of the end surface of the square insert facing the side of the die 2 is matched with the radian of the inner side wall of the shrink sleeve 1.

Like this, with removable insert 6 design for with second cavity 42 shape adaptation and the unanimous insert shape of terminal surface radian and shrink sleeve 1 terminal surface radian, when taking place to damage, directly take out removable insert 6 from second cavity 42 behind the accessible dismantlement clamp plate 3, improve change efficiency.

In this embodiment, the pressing plate 3 is connected with the end surface of the shrink sleeve 1 through a plurality of bolts.

Example 2

This embodiment is similar with embodiment 1, and the difference lies in, removable mold insert 6 is the notch cuttype mold insert with notch cuttype through-hole shape looks adaptation in this embodiment, and the screw thread with adjusting bolt 5's external screw thread looks adaptation is seted up to the inside wall of notch cuttype mold insert, and the lateral wall of notch cuttype mold insert is connected with the inside wall of notch cuttype through-hole.

In this embodiment, the radian of the end surface of the stepped insert facing to the side of the die 2 is matched with the radian of the inner side wall of the shrink sleeve 1.

Therefore, the replaceable insert 6 is designed into an insert shape which is adaptive to the shape of the stepped through hole and has the end surface radian consistent with that of the shrinkage sleeve 1, so that the attaching effect of the replaceable insert 6 and the shrinkage sleeve 1 can be improved, and the locking strength of the replaceable insert 6 and the adjusting bolt 5 can be improved. When the replaceable insert 6 is replaced, the replaceable insert 6 is ejected out of one side of the through hole after the pressing plate 3 is detached, and the purpose of replacement can be achieved.

Other structures and principles of this embodiment are the same as those of embodiment 1.

Example 3

As shown in fig. 5, a water supply and drainage pipe extrusion die comprises a die holder 7, a die core 8, a flow distribution plate 9 and the water supply and drainage pipe extrusion die assembly according to embodiment 1, wherein two circumferential sides of the flow distribution plate 9 are respectively connected with the die holder 7 and the shrinkage sleeve 1, and the die core 8 is connected with the flow distribution plate 9 and penetrates through the middle of an extrusion flow channel.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a plumbing pipe extrusion tooling subassembly, includes shrink sleeve (1), and one end is inserted and is established shrink sleeve (1) is inside and be located bush (2) of extruding mouth one side, and the cover is established bush (2) outside and with clamp plate (3) of connection can be dismantled to the terminal surface of shrink sleeve (1), its characterized in that, set up a plurality of evenly distributed's through-hole (4) on bush (2) lateral wall looks butt circumference lateral wall, all wear to be equipped with in every through-hole (4) one end with adjusting bolt (5) of the lateral wall butt of bush (2), still be equipped with the cover in through-hole (4) and establish adjusting bolt (5) outside and inside wall with adjusting bolt (5) threaded connection's removable mold insert (6).

2. A water supply and drainage pipe extrusion die assembly as claimed in claim 1, wherein the die (2) comprises a flow passage main body (21), an annular boss (22) is arranged at one end of the flow passage main body (21), the pressing plate (3) is sleeved outside the flow passage main body (21), the annular boss (22) is inserted at one end of the shrinkage sleeve (1) and is located between the shrinkage sleeve (1) and the pressing plate (3), a certain gap is reserved at one side of the shrinkage sleeve (1) abutted against the outer side wall of the annular boss (22), and a certain gap is reserved at one side of the pressing plate (3) abutted against the outer side wall of the flow passage main body (21).

3. A water supply and drainage pipe extrusion die assembly as claimed in claim 1, wherein the through hole (4) is a stepped through hole formed by a first cavity (41) and a second cavity (42) which are communicated with each other, and the caliber of the first cavity (41) is smaller than that of the second cavity (42).

4. A feed and drain pipe extrusion die assembly according to claim 3, wherein one end of the first cavity (41) is communicated with the outer side wall of the shrink sleeve (1) and the other end is communicated with the second cavity (42), and one end of the second cavity (42) is communicated with the first cavity (41) and the other end is communicated with the end side wall and the inner side wall of the shrink sleeve (1).

5. The extrusion die assembly for water supply and drainage pipes as claimed in claim 3, wherein the replaceable insert (6) is a stepped insert matched with the stepped through hole in shape, threads matched with the external threads of the adjusting bolt (5) are formed in the inner side wall of the stepped insert, and the outer side wall of the stepped insert is connected with the inner side wall of the stepped through hole.

6. A water supply and drainage pipe extrusion die assembly as claimed in claim 5, wherein the radian of the end surface of one side of the stepped insert facing the die (2) is matched with the radian of the inner side wall of the shrinkage sleeve (1).

7. The extrusion die assembly for water supply and drainage pipes according to claim 3, wherein the replaceable insert (6) is a square insert which is matched with the second cavity (42) in shape, the inner side wall of the square insert is provided with threads matched with the external threads of the adjusting bolt (5), and the outer side wall of the square insert is connected with the inner side wall of the second cavity (42).

8. A water supply and drainage pipe extrusion die assembly as claimed in claim 7, wherein the radian of the end surface of one side of the square insert facing the die (2) is matched with the radian of the inner side wall of the shrinkage sleeve (1).

9. A water supply and drainage pipe extrusion die assembly as claimed in claim 1, wherein the pressure plate (3) is connected with the end surface of the shrinkage sleeve (1) through a plurality of bolts.

10. The water supply and drainage pipe extrusion die is characterized by comprising a die holder (7), a die core (8), a flow distribution plate (9) and the water supply and drainage pipe extrusion die assembly as claimed in any one of claims 1 to 9, wherein the two circumferential sides of the flow distribution plate (9) are respectively connected with the die holder (7) and the shrinkage sleeve (1), and the die core (8) is connected with the flow distribution plate (9) and penetrates through the middle of an extrusion flow channel.