CN213002124U

CN213002124U - Spherical pipe fitting forming device

Info

Publication number: CN213002124U
Application number: CN202021764151.1U
Authority: CN
Inventors: 李明镜; 张艳雷; 徐猛; 方翠平
Original assignee: Capital Aerospace Science And Technology Development Co ltd
Current assignee: Capital Aerospace Science And Technology Development Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-04-20
Anticipated expiration: 2030-08-21

Abstract

The utility model relates to a tubular metal resonator processing technology field, concretely relates to spherical pipe fitting forming device. The pipe forming device comprises: the die comprises a die, a pressure head and a support frame, wherein the support frame comprises a bottom support seat and a top guide seat, a placing space is formed between the bottom support seat and the top guide seat, and the die is supported on the bottom support seat and is positioned in the placing space; the die is arranged on the bottom supporting seat and is positioned along the horizontal direction; the push rod is arranged on the top guide seat in an up-and-down guiding manner; the upper end of the push rod penetrates out of the top guide seat to be pressed by a hammer head of a press; the pressure head is fixed at the lower end of the push rod or is formed by the lower end of the push rod; the forming device also comprises an elastic resetting piece which is used for providing upward elastic force for the push rod so as to enable the press head to move upwards to leave the die when the hammer head of the press moves upwards to leave the push rod. When in use, the supporting frame is only required to be fixed on the platform of the press machine, and the spherical pipe fitting forming device is conveniently installed on the press machine.

Description

Spherical pipe fitting forming device

Technical Field

The utility model relates to a tubular metal resonator processing technology field, concretely relates to spherical pipe fitting forming device.

Background

With the rapid development of the machining and manufacturing industry, the use requirement of the product forming and machining part is higher and higher, and the demand of the matched aerospace forming part product is higher and higher. The structure and the shape of the product are more and more complex and various, and the processing difficulty is more and more high.

For the machining of the spherical pipe element 100 shown in fig. 1, comprising a tubular portion 101 and a spherical portion 102, the conventional machining method is turning, which has the following drawbacks: 1) the clamping consistency of the product is difficult to ensure, and the dimensional tolerance is difficult to ensure in a reasonable range; 2) the requirements on the technical level of operators are extremely high, the processing time is long, and the production efficiency is low; 3) in the product processing process, the phenomenon that one end of the product is turned and the other end of the product is not turned (spherical surface offset phenomenon) can occur due to slight vibration or unstable clamping on a lathe or the fact that a die cannot be positioned and swings or offsets; 4) the processing quality of the product is difficult to ensure, and the delivery qualification rate is difficult to ensure; 5) the consistency of the product size and appearance is poor. The follow-up secondary repair is difficult, and the problem of other processes caused by the reworking to a certain process also occurs.

The utility model discloses a utility model patent with publication number CN202984394U discloses an bulging device, and this bulging device uses as the spherical pipe fitting forming device of the above-mentioned spherical pipe fitting of shaping, during the use, will wait to process the pipe fitting cartridge in the die cavity of bulging device, is equipped with the elasticity bulging piece in the die cavity, and the pressure head pushes down the elasticity bulging piece, and the elasticity bulging piece warp and forces the pipe fitting of die cavity spherical part department to take place to warp and form spherical pipe fitting. When the bulging device is installed on the press machine, the connection between the hammer head of the press machine and the press head needs to be carried out, the connection between the workbench of the press machine and the die needs to be carried out, the positions of the press head and the die need to be debugged when the connection is carried out, the centering of the press head and the die cavity is realized, and the problem that the installation and debugging of the bulging device on the press machine are inconvenient exists.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a spherical pipe fitting forming device to it is fixed to make things convenient for the installation of spherical pipe fitting forming device on the press.

In order to achieve the above object, the utility model discloses well spherical pipe fitting forming device's technical scheme is:

spherical pipe fitting forming device includes:

the mould comprises a mould section and a mould sleeve, wherein the mould sleeve is used for the mould section to be arranged so that the mould section can surround a mould cavity;

the pressing head is used for pressing the elastic expansion piece in the lower pressing cavity to expand the elastic expansion piece so as to extrude the pipe fitting to be processed;

the spherical pipe fitting forming device further comprises:

the supporting frame comprises a bottom supporting seat and a top guiding seat, a placing space is formed between the bottom supporting seat and the top guiding seat, and the placing space is used for placing a mold; the die is arranged on the bottom supporting seat and is positioned along the horizontal direction;

the push rod is arranged on the top guide seat in an up-and-down guiding manner; the upper end of the push rod penetrates out of the top guide seat to be pressed by a hammer head of a press;

the pressure head is fixed at the lower end of the push rod or is formed by the lower end of the push rod;

the spherical pipe fitting forming device further comprises an elastic resetting piece used for providing upward elastic force for the push rod so as to enable the pressure head to move upwards to leave the die when the hammer head of the press moves upwards to leave the push rod.

The utility model has the advantages that: mould and pressure head are all installed on the support frame, realize the centering of pressure head and die cavity through the support frame, the pressure head and the die cavity of spherical pipe fitting forming device itself have already been centered promptly, when installing spherical pipe fitting forming device on the press, only need fix the support frame on the press platform, make the push rod upper end aim at the tup of press can, need not carry out the tup of press and be connected of pressure head, saved the debugging process of pressure head and mould position, conveniently install spherical pipe fitting forming device on the press.

As a preferred technical scheme, a mould section supporting surface is arranged on the bottom supporting seat and is used for supporting a mould section;

the inner hole of the die sleeve is a conical hole, the aperture of the upper end of the conical hole is larger than that of the lower end of the conical hole, and the peripheral surface of the die clack is matched with the hole wall of the conical hole so as to support the die sleeve.

Has the advantages that: when the pipe fitting needs to be taken down after being machined and formed, the die sleeve is directly taken down from the die clack, the die clack can be automatically opened, and the machined and formed spherical pipe fitting can be conveniently taken out from the die.

As a preferred technical scheme, an upper boss is convexly arranged on the bottom support seat upwards, the mold petal is sleeved on the upper boss and forms a gap with the upper boss, and the gap is used for inserting a pipe fitting to be molded;

the die sleeve is matched with the bottom supporting seat in a positioning mode along the radial direction of the die sleeve.

Has the advantages that: the die sleeve and the bottom supporting seat are matched in a radial positioning mode along the die sleeve, so that the die is positioned in the horizontal direction of the bottom supporting seat, and the die is positioned in the horizontal direction of the bottom supporting seat conveniently.

As a preferred technical scheme, a die sleeve positioning surface is arranged on the radial outer side of the upper boss, and the die sleeve positioning surface is matched with the hole wall of the conical hole in a positioning mode along the radial direction of the die sleeve.

Has the advantages that: the radial positioning structure between the die sleeve and the bottom supporting seat is simple, and the design and the processing are convenient.

As a preferred technical scheme, the bottom support seat comprises a bottom pad and a ring pad, the upper boss is arranged on the bottom pad, and the ring pad is sleeved on the upper boss and is in positioning fit with the upper boss along the radial direction;

the mould valve supporting surface and the mould sleeve positioning surface are both arranged on the ring pad.

Has the advantages that: when the pipe fitting is formed, the elastic bulging piece is arranged in the cavity and positioned on the upper portion of the upper boss, the upper boss needs to directly bear the pressure of the elastic bulging piece, the ring cushion bears the pressure transmitted to the upper boss through the die, and the bottom cushion and the ring cushion can be made of different materials according to the load demand, so that the material cost is saved.

Preferably, the ring pad is made of an elastic material.

Has the advantages that: the ring pad plays a force transfer role between the die and the bottom pad, is made of elastic materials, and can well prevent the die or the bottom pad from being damaged by overlarge impact force when the force of the pressure head is transmitted to the bottom pad through the die.

As a preferred technical scheme, the bottom support seat further comprises a positioning base, the positioning base is arranged at the lower part of the bottom cushion, one of the positioning base and the bottom cushion is provided with a lower boss, the other one of the positioning base and the bottom cushion is provided with a positioning hole, and the lower boss is inserted into the positioning hole and is in positioning fit with the positioning hole along the radial direction so as to realize the positioning of the bottom cushion in the horizontal direction of the positioning base.

Has the advantages that: during the pipe fitting shaping, elasticity bulging piece dress is in the die cavity and is located upper boss upper portion, and upper boss need directly bear the pressure of elasticity bulging piece, and what the location base bore is through the mould, the power that the ring was filled up and the heelpiece transmits to it, and location base and heelpiece can adopt different materials to make according to the load demand, are favorable to under the prerequisite of material cost is saved, improve spherical pipe fitting forming device's life.

According to the preferable technical scheme, the top guide seat is provided with a guide hole, the guide hole penetrates through the top guide seat from top to bottom, and the push rod is inserted into the guide hole in a guiding mode so as to achieve the purpose that the push rod can be guided on the top guide seat from top to bottom.

Has the advantages that: the guide structure between the push rod and the top guide seat is simple, and design and processing are convenient.

According to the preferable technical scheme, one of the lower end of the push rod and the upper end of the pressure head is provided with an insertion hole, the other end of the push rod and the upper end of the pressure head is provided with an insertion shaft, and the insertion shaft is inserted into the insertion hole and is in positioning fit with the insertion hole along the radial direction of the insertion hole, so that the pressure head is positioned in the horizontal direction of the push rod.

Has the advantages that: through the cooperation of jack and inserted shaft cartridge, conveniently realize the location of pressure head at the push rod horizontal direction.

As a preferred technical scheme, the elastic reset piece is a pressure spring;

and the upper end of the push rod is provided with a pressure spring seat, the pressure spring is sleeved on the push rod, and two ends of the pressure spring respectively press against the upper end surfaces of the pressure spring seat and the top guide seat.

Has the advantages that: the installation of the pressure spring is realized by sleeving the pressure spring on the push rod, and the installation and the disassembly of the elastic reset piece are facilitated.

Drawings

FIG. 1 is a schematic diagram of a prior art spherical pipe fitting;

fig. 2 is a schematic structural diagram of a spherical pipe forming device according to embodiment 1 of the present invention;

fig. 3 is a cross-sectional view of the front view of fig. 2.

1-a support frame; 11-a base plate; 12-a top plate; 13-upright column; 14-positioning holes; 2-a bottom pad; 21-upper boss; 22-lower boss; 3-ring pad; 31-a mold half supporting surface; 32-die sleeve positioning surface; 4-mold halves; 41-a cavity; 5-die sleeve; 6-elastic dilatant; 7-pressure head; 8-a push rod; 9-a pressure spring; 10-pressing a cap; 100-spherical pipe fitting; 101-a tubular portion; 102-spherical portion.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The features and properties of the present invention are described in further detail below with reference to examples.

The utility model discloses a spherical pipe fitting forming device's embodiment 1:

as shown in fig. 2 and 3, the spherical pipe forming device comprises a support frame 1, a die, a push rod 8 and a press head 7. Support frame 1 includes roof 12, bottom plate 11 and four stands 13, and roof 12 and bottom plate 11 are the rectangular plate, and four stands 13 are connected between four angles of roof 12 and bottom plate 11, and bottom plate 11 is as the location base for fix on the workstation of press, and roof 12 is as the top guide holder, and the direction setting is on roof 12 about push rod 8, and pressure head 7 is fixed at 8 lower extremes of push rod, and the tup roof pressure of the upper end confession press of push rod 8. The die is arranged on the bottom plate 11 and positioned along the horizontal direction, a cavity 41 is formed in the die, the cavity 41 is used for installing a pipe fitting to be processed, the middle of the cavity 41 is spherical, and the shape of the spherical part of the spherical pipe fitting to be formed is consistent with that of the spherical part of the spherical pipe fitting to be formed.

Specifically, as shown in fig. 3, a bottom pad 2 and a ring pad 3 are disposed on the bottom plate 11, and the bottom pad 2, the ring pad 3 and the bottom plate 11 form a bottom positioning seat of the spherical pipe forming device. The upper end and the lower end of the bottom pad 2 are respectively provided with an upper boss 21 and a lower boss 22, the cross section of the lower boss 22 is rectangular, and the cross section of the upper boss 21 is circular. The bottom plate 11 is provided with a rectangular positioning hole 14, and the lower boss 22 is inserted into the positioning hole 14 and is matched with the positioning hole 14 in a radial positioning mode along the bottom fixing pad 2, so that the center of the bottom fixing pad 2 is overlapped with the positioning hole 14, and the bottom fixing pad 2 is positioned in the horizontal direction of the support frame 1. The hole of the ring pad 3 is a round hole, the ring pad 3 is sleeved on the upper boss 21 of the base pad 2 and is matched with the upper boss 21 along the radial positioning of the ring pad 3, so that the center of the ring pad 3 and the center of the base pad 2 are coincided, and the ring pad 3 is positioned in the horizontal direction of the support frame 1.

As shown in fig. 3, the mold comprises two mold halves 4 and a mold sleeve 5, wherein the mold sleeve 5 is sleeved outside the two mold halves 4, so that the two mold halves 4 are closed to form the cavity 41. The mould halves 4 are sleeved on the upper boss 21 and form a space with the upper boss 21, and the pipe fitting to be formed is inserted into the space. The ring pad 3 includes an upper convex portion and a horizontal portion, the upper convex portion is disposed radially inside the horizontal portion, an upper end surface of the upper convex portion is a mold half supporting surface 31, and the mold half supporting surface 31 is in supporting engagement with a lower end surface of the mold half 4 to support the mold.

As shown in fig. 3, the inner hole of the die sleeve 5 is a tapered hole with a large lower part and a large upper part, the outer peripheral surface of the two die halves 4 when being aligned is a tapered surface, the outer peripheral surface of the upper convex part is a die sleeve positioning surface 32, the die sleeve 5 is sleeved outside the two die halves 4, and the hole wall of the tapered hole is in radial positioning fit with the outer peripheral surfaces of the two die halves 4 and the die sleeve positioning surface 32 along the die sleeve 5, so that the positioning of the die in the horizontal direction of the support frame 1 is realized. The centers of the die segment 4, the ring pad 3 and the die sleeve 5 are superposed with each other through the conical hole of the die sleeve 5 by utilizing the centering effect of conical surface matching.

As shown in fig. 3, the ring pad 3 separates the bottom pad 2 from the mold in the vertical direction, and plays a role of transmitting the force of the mold to the bottom pad 2, and the ring pad 3 is made of rubber material, so that the ring pad 3 also plays a role of buffering the force in the process of transmitting the force of the mold to the bottom pad 2, and avoids the damage to the mold or the bottom pad 2 due to the overlarge impact of the force.

As shown in fig. 3, the top plate 12 is provided with a guide hole which is vertically penetrated, and the push rod 8 is inserted into the guide hole to guide the vertical movement of the push rod 8 through the hole wall of the guide hole and to make the push rod 8 coincide with the center of the guide hole. The lower end of the push rod 8 is provided with a jack, the pressure head 7 is provided with an insertion shaft, and the insertion shaft is inserted into the jack and is matched with the jack in a radial positioning mode, so that the center of the pressure head 7 is coincided with the center of the push rod 8. The push rod 8 is matched with the guide hole in an inserted mode, and the center of the push rod 8 is overlapped with the center of the guide hole. The inserting shaft is in threaded connection with the inserting hole, and the pressing head 7 is fixedly connected with the push rod 8.

As shown in fig. 2 and 3, a pressing cap 10 is screwed to the upper end of the push rod 8, and the pressing cap 10 is pressed by a hammer head of the press. The push rod 8 is sleeved with a pressure spring 9, the upper end and the lower end of the pressure spring 9 are respectively pressed on a pressure cap 10 and a top plate 12, and the pressure cap 10 forms a pressure spring seat of the pressure spring 9.

During specific design and processing, the centers of the guide hole and the positioning hole 14 are overlapped, so that the centers of the positioning hole 14, the bottom pad 2, the ring pad 3, the cavity 41 and the pressure head 7 can be finally overlapped through the matching relationship among the parts. Like this, when installing spherical pipe fitting forming device on the press, only need with support frame 1 fix on the workstation of press, make press cap 10 upper end and the tup centering of press can, need not carry out the centering debugging of pressure head 7 and die cavity 41, conveniently install spherical pipe fitting forming device on the press.

The utility model discloses a spherical pipe fitting forming device's assembly method: the lower boss 22 of the bottom pad 2 is inserted into the positioning hole 14 of the bottom plate 11, the ring pad 3 is sleeved on the upper boss 21 of the bottom pad 2, the two mould halves 4 are oppositely arranged on the upper convex part of the ring pad 3, and the mould sleeve 5 is sleeved on the outer sides of the two mould halves 4, so that the assembly of the mould part is completed. The push rod 8 is inserted in the guide hole, the pressure head 7 is fixed at the lower end of the push rod 8, meanwhile, the upper end of the push rod 8 is sleeved with the pressure spring 9, and the pressure cap 10 is fixed at the upper end of the push rod 8, so that the assembly of the pressure head 7 is completed.

Use the utility model discloses a method of spherical pipe fitting forming device processing spherical pipe fitting: a bottom plate 11 of the support frame 1 is fixed on a workbench of a press machine, a pipe fitting to be processed is filled in a cavity 41 of a die 4, and an elastic expansion body 6 is filled in the pipe fitting to be processed; controlling the hammer head of the press machine to move downwards, wherein the hammer head of the press machine pushes the pressing cap 10 to compress the pressure spring 9, the pressing head 7 pushes the elastic expansion body 6, and the elastic expansion body 6 deforms under the action of pressure to force the pipe fitting to be processed to deform to form a spherical pipe fitting; controlling the hammer head of the press machine to move upwards, driving the pressure head 7 to reset upwards by the push rod 8 under the action of the pressure spring 9, taking down the die sleeve 5, opening the die clack 4, taking down the formed spherical pipe fitting, and finishing the processing and forming of the spherical pipe fitting. The spherical pipe fitting forming device is convenient to install on the press machine, the pressing head can automatically reset under the action of the pressure spring 9 when a product is processed, and the spherical pipe fitting forming device is convenient to install before pipe fitting forming and take out after forming. The elastic expansion body 6 can be made of rubber or polyurethane.

The utility model discloses a spherical pipe fitting forming device has following advantage:

1) when the forming device is used, the support frame is fixed on the workbench of the press machine, so that the forming device can be fixedly installed on the press machine, and the forming device can be conveniently installed and fixed on the press machine.

1) The forming device has simple structure and is beneficial to processing and manufacturing.

2) The pipe fitting processing steps are simple and clear, the operation is convenient, and the product processing efficiency and the processing quality are greatly improved.

3) The die sleeve 5 and the die clack 4 are positioned by conical surface self-centering, the base pad 2 and the support frame 1 are positioned by square holes, the consistency and the machining precision of the machined product are higher, the reliability and the stability of the product quality can be ensured, and the product machining quality can be improved.

4) The lower part of the pressing cap 10 is reset by adopting the pressure spring 9, so that the processing property and the usability are greatly improved.

The utility model discloses a spherical pipe fitting forming device's embodiment 2:

the ram in embodiment 1 above is threaded onto the lower end of the ram. In this embodiment, the pressing head is formed by the lower end of the push rod, i.e. the push rod and the pressing head are of an integrated structure, and the lower end of the push rod forms the pressing head for extruding the elastic expansion body.

The utility model discloses a spherical pipe fitting forming device's embodiment 3:

the taper hole of the die sleeve in the embodiment 1 is large at the bottom and small at the top, and the two die halves of the die sleeve are directly taken down to be separated, so that the spherical pipe fitting is taken down. The mould in this embodiment adopts the mould disclosed in the utility model patent that the publication number is CN202984394U of authorizing, and big end down is gone up to the bell mouth of die sleeve promptly, when getting the spherical pipe fitting after the shaping, needs take off the mould whole earlier, then take off the die sleeve and make the mould lamella part separately, later take off spherical pipe fitting again.

The utility model discloses a spherical pipe fitting forming device's embodiment 4:

the spherical pipe fitting forming device in the embodiment 1 comprises a bottom pad, the bottom pad and a bottom plate of the support frame are positioned in the horizontal direction, the ring pad is sleeved on an upper boss of the bottom pad, and the die is arranged above the ring pad. The spherical pipe fitting forming device in the embodiment does not comprise a bottom pad, an upward convex boss is arranged on a bottom plate of the support frame, the upper boss is sleeved with a ring gasket, and the mold is arranged on the ring gasket.

The utility model discloses a spherical pipe fitting forming device's embodiment 5:

the spherical pipe forming device in the above embodiment 1 includes the ring pad, and the mold is disposed above the ring pad. The spherical pipe fitting forming device in the embodiment does not comprise a ring pad, and the die is directly arranged above the bottom pad.

The utility model discloses a spherical pipe fitting forming device's embodiment 6:

the elastic reset piece in the embodiment 1 is a pressure spring, the pressure spring is sleeved on the push rod, and two ends of the pressure spring are pressed and assembled between the pressure cap and the top plate of the support frame. The elasticity that resets in this embodiment is the extension spring, and the extension spring suit is on the push rod, and the both ends of extension spring are connected with the roof of pressure head, support frame respectively, exert ascending elasticity that resets through the extension spring to the push rod. Of course, in other embodiments, the compression spring may be replaced by a rubber pad.

The utility model discloses a spherical pipe fitting forming device's embodiment 7:

the top plate of the support frame in the embodiment 1 is provided with the guide hole, and the push rod is inserted into the guide hole to realize the up-and-down guide of the push rod. In this embodiment, the top plate of the support frame is provided with a sliding groove extending up and down, the push rod is provided with a sliding block, and the sliding block is inserted into the sliding groove to realize the up-and-down guiding of the push rod.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. A spherical pipe fitting forming apparatus comprising:

characterized by, the spherical pipe fitting forming device still includes:

the supporting frame comprises a bottom supporting seat and a top guiding seat, a placing space is formed between the bottom supporting seat and the top guiding seat, and the placing space is used for placing a mold;

the die is arranged on the bottom supporting seat and is positioned along the horizontal direction;

2. The spherical pipe forming apparatus as claimed in claim 1, wherein said bottom support base is provided with a die supporting surface for supporting a die;

3. The spherical pipe forming device as claimed in claim 2, wherein the bottom support base is provided with an upper boss protruding upward, the mold halves are fitted over the upper boss and spaced from the upper boss to allow insertion of the pipe to be formed;

4. The spherical pipe forming device as claimed in claim 3, wherein the radially outer side of the upper boss is provided with a die sleeve positioning surface, and the die sleeve positioning surface is in positioning fit with the wall of the conical hole along the radial direction of the die sleeve.

5. The spherical pipe forming device as claimed in claim 4, wherein the bottom support comprises a bottom pad and a ring pad, the upper boss is disposed on the bottom pad, and the ring pad is sleeved on the upper boss and is in positioning fit with the upper boss along a radial direction;

6. Spherical tube forming apparatus according to claim 5, wherein the ring is made of an elastic material.

7. The spherical pipe forming device as claimed in claim 5, wherein the bottom support further comprises a positioning base, the positioning base is disposed at a lower portion of the bottom pad, one of the positioning base and the bottom pad is provided with a lower boss, the other one of the positioning base and the bottom pad is provided with a positioning hole, and the lower boss is inserted into the positioning hole and is radially positioned and matched with the positioning hole to position the bottom pad in a horizontal direction of the positioning base.

8. The spherical pipe forming device as claimed in any one of claims 1 to 7, wherein the top guide seat is provided with a guide hole, the guide hole vertically penetrates through the top guide seat, and the push rod is inserted into the guide hole to achieve vertical guiding of the push rod on the top guide seat.

9. The spherical pipe fitting forming device as claimed in any one of claims 1 to 7, wherein one of the lower end of the push rod and the upper end of the pressure head is provided with a socket, and the other is provided with an insertion shaft, the insertion shaft is inserted into the socket and is matched with the socket in a radial positioning manner along the socket, so as to realize the positioning of the pressure head in the horizontal direction of the push rod.

10. The spherical pipe forming device according to any of claims 1-7, wherein the elastic return member is a compression spring;