Pipeline connector forming die

Abstract

The utility model provides a pipeline connector forming die which comprises a base, a die body, a die head and a die body. The middle of the base is provided with an opening. The outer mold is arranged on the upper surface of the base; the plurality of inner petal dies form a cylinder, a through hole is formed in the middle of the cylinder, and the through hole is conical; the multiple inner petal dies are arranged at the opening of the base and can move in a limited mode in the radial direction of the opening so as to be matched with the outer die to achieve forming of the pipeline connector; the inner petal die driving part comprises a cone and two limiting protrusions, the two limiting protrusions are arranged on the two sides of the bottom of the cone respectively, and the limiting protrusions just touch the lower surface of the base when the inner petal die driving part reaches the maximum moving distance so as to prevent the inner petal die driving part from continuing to move; wherein the inner petal die driving part is arranged in the through hole, and the cone is matched with the through hole. According to the utility model, the limiting bulge can be used for preventing the driving part of the inner petal die from moving over position, so that the inner petal die is damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline interfaces, in particular to the technical field of a pipeline interface forming die. Background Art

[0002] In the field of pipeline interfaces, common interface methods include welding, flange connection, thread connection, etc., as well as flexible connection methods. The prior art generally uses a sealing ring to achieve a flexible connection method. Such a connection method requires an annular protrusion S (such as Figure 1 shown).

[0003] In the prior art, the annular protrusion S is generally formed on the joint of the pipe by extrusion of a mold, but the existing mold still has many problems: the inner mold is easily damaged by the hydraulic rod, and the inner mold is unevenly stressed and easily deformed by extrusion.

[0004] Therefore, there is an urgent need for a pipeline interface forming die that can prevent the inner die from being damaged and prevent the inner die from being deformed by force. Utility Model Content

[0005] The utility model aims to provide a pipeline interface forming die which can avoid the inner die from being damaged and prevent the inner die from being deformed due to stress.

[0006] In order to achieve the above objectives, the utility model is implemented through the following technical solutions:

[0007] Provided is a pipeline interface forming die, comprising:

[0008] A base, wherein an opening is arranged in the middle of the base;

[0009] An outer mold, which is placed on the upper surface of the base and is used to apply stress to the outer surface of the pipeline;

[0010] A plurality of inner flap molds, the plurality of inner flap molds forming a cylinder, a through hole is provided in the middle of the cylinder, and the through hole is conical; the plurality of inner flap molds are arranged at the opening of the base, and can move limitedly along the radial direction of the opening, and are used to apply stress to the inner surface of the pipe, so as to cooperate with the outer mold to realize the forming of the pipe interface;

[0011] The inner lobe mold driving part comprises a cone and a limiting protrusion, wherein the number of the limiting protrusions is two and they are respectively arranged on both sides of the bottom of the cone, and the limiting protrusions just touch the lower surface of the base when the inner lobe mold driving part reaches the maximum moving distance, thereby preventing the inner lobe mold driving part from continuing to move; wherein the inner lobe mold driving part is arranged in the through hole, and the cone cooperates with the through hole, and the movement of the inner lobe mold driving part drives the multiple inner lobe molds to move limitedly along the radial direction of the opening.

[0012] Furthermore, it also includes: a guide part, which is cylindrical and arranged on the lower surface of the base, and is used to guide the movement of the inner petal mold driving part.

[0013] Furthermore, the cylindrical guide portion includes a circular accommodating hole, the circular accommodating hole cooperates with the bottom of the cone, and the inner flap mold driving portion is placed in the circular accommodating hole and can move relative to the circular accommodating hole.

[0014] Furthermore, limiting grooves extending along the axial direction of the cylinder are arranged on both sides of the accommodating circular hole, and the limiting grooves cooperate with the limiting protrusions.

[0015] Furthermore, the base includes an upper substrate and a lower substrate, the upper substrate is provided with an opening, the lower substrate is provided with an opening, the openings are both circular, and the diameter of the opening of the upper substrate is larger than the diameter of the opening of the lower substrate.

[0016] Furthermore, steps are arranged around the opening of the upper surface of the lower substrate to form an annular supporting portion between the lower surface of the upper substrate and the upper surface of the lower substrate.

[0017] Furthermore, an annular groove extending along the circumferential direction is provided on the surface of the cylinder, and the annular groove cooperates with the upper base plate; and an annular base is formed below the annular groove.

[0018] Furthermore, the annular base is placed in the annular holding portion, and the annular base cooperates with the annular holding portion.

[0019] Furthermore, there are two outer molds, each of which is in a clamp shape, and the surface of the clamp facing the inner petal mold is semicircular.

[0020] Furthermore, an annular protrusion extending along the circumferential direction is arranged on the surface of the cylinder, and an annular recess extending along the transverse direction is arranged on the surface of the outer mold facing the inner petal mold, and the annular protrusion and the annular recess cooperate to form at the pipe interface.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] The limiting protrusion of the inner petal mold driving part provided by the utility model prevents the inner petal mold driving part from continuing to move upward, thereby avoiding the deformation of the inner petal mold caused thereby; in addition, the guide part can guide the inner petal mold driving part to move in the vertical direction, and the limiting groove can prevent the rotation of the inner petal mold driving part; furthermore, the cooperation between the annular groove and the upper base plate, and the cooperation between the annular base and the annular supporting part, enable the inner petal mold to move stably along its radial direction without forming a deflection force, thereby avoiding the extrusion deformation of the inner petal mold caused by the deflection force. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the utility model, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are an embodiment of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0024] Figure 1 It is a schematic diagram of the interface structure of a pipeline in the prior art;

[0025] Figure 2 A cross-sectional view of a pipe interface forming die provided by the utility model;

[0026] Figure 3 A schematic diagram of the structure of the pipe interface forming die provided by the utility model;

[0027] Figure 4 A schematic diagram of the structure of the outer mold provided by the utility model;

[0028] Figure 5 This is a structural schematic diagram of the guide part provided by the utility model. DETAILED DESCRIPTION

[0029] The scheme proposed by the utility model is further described in detail below in combination with the accompanying drawings and specific implementation methods. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so it has no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model.

[0030] Figure 2 The schematic diagram of the structure of the pipeline interface forming die provided by the utility model is shown as follows: Figure 2 As shown, the pipeline interface forming die comprises:

[0031] A base 100, wherein an opening is provided in the middle of the base;

[0032] An outer mold 200, which is placed on the upper surface of the base and is used to apply stress to the outer surface of the pipeline;

[0033] A plurality of inner flap molds 300, the plurality of inner flap molds forming a cylinder, a through hole being provided in the middle of the cylinder, the through hole being conical; the plurality of inner flap molds being arranged at the opening of the base, and being able to move limitedly along the radial direction of the opening, and being used to apply stress to the inner surface of the pipe, so as to cooperate with the outer mold to realize the forming of the pipe interface;

[0034] The inner lobe mold driving part comprises a cone 401 and a limiting protrusion 402, wherein the limiting protrusion 402 is two and is respectively arranged on both sides of the bottom of the cone 401, and the limiting protrusion just touches the lower surface of the base 100 when the inner lobe mold driving part reaches the maximum moving distance, thereby preventing the inner lobe mold driving part from continuing to move; wherein, the inner lobe mold driving part is arranged in the through hole, and the cone cooperates with the through hole, and the multiple inner lobe molds are driven to move limitedly along the radial direction of the opening through the movement of the inner lobe mold driving part.

[0035] The inner flap mold driving part of the utility model is connected to the driving part, which includes but is not limited to a cylinder and a screw rod, thereby driving the inner flap mold driving part to move upward and downward; the inner flap mold driving part moves upward and downward, and under the push of the inclined surface of the cone, the multiple inner flap molds 300 move radially, thereby applying stress to the inner surface of the pipe.

[0036] The limiting protrusion 402 of the inner petal mold driving part of the utility model can contact the lower surface of the base when the inner petal mold driving part moves upward to the maximum distance, thereby preventing the inner petal mold driving part from continuing to move upward, thereby preventing the inner petal mold 300 from being squeezed and deformed due to the inner petal mold driving part continuing to move upward.

[0037] Among them, the number of the inner flap molds 300 is preferably 6-12.

[0038] Optional, such as Figure 5As shown, the pipe interface forming mold also includes: a guide portion 500, which is cylindrical, arranged on the lower surface of the base 100 and placed along the vertical direction, and the guide portion 500 is used to guide the movement of the inner flap mold driving portion. The cylindrical guide portion 500 includes a receiving circular hole, and the receiving circular hole cooperates with the bottom of the cone 401. The inner flap mold driving portion is placed in the receiving circular hole and can move relative to the receiving circular hole. Limiting grooves 501 extending along the axial direction of the cylinder are arranged on both sides of the receiving circular hole, and the limiting grooves 501 cooperate with the limiting protrusions 402. Due to the setting of the guide part 500, the inner flap mold driving part can move only in the vertical direction, preventing the movement of the inner flap mold driving part from being offset. The offset of the inner flap mold driving part will cause different forces on the inner flap mold 300 at different positions, so that after long-term use, the inner flap mold 300 subjected to large forces will be deformed and damaged; at the same time, the cooperation between the limiting groove 501 and the limiting protrusion 402 can prevent the rotation of the cone 401.

[0039] Preferably, the base includes an upper substrate 101 and a lower substrate 102, the upper substrate is a circular plate, and is provided with an opening in the middle of the upper substrate; the lower substrate is also a circular plate, and is also provided with an opening in the middle of the lower substrate, the opening of the upper substrate and the opening of the lower substrate are both circular, the opening of the upper substrate and the opening of the lower substrate together constitute the opening, and the diameter of the opening of the upper substrate 101 is larger than the diameter of the opening of the lower substrate 102.

[0040] Further, steps are arranged around the opening of the upper surface of the lower substrate 102 to form an annular support portion 103 between the lower surface of the upper substrate 101 and the upper surface of the lower substrate 102. An annular groove 301 extending along the circumferential direction is arranged on the surface of the cylinder, and the annular groove 301 cooperates with the upper substrate 101, that is, the height of the annular groove 301 is the same as the thickness of the upper substrate 101; an annular base 303 is formed below the annular groove. The annular base 303 is placed in the annular support portion 103, and the annular base 303 cooperates with the annular support portion 103, that is, the thickness of the annular base 303 is the same as the height of the annular support portion 103. Therefore, when the cone of the inner petal mold driving part moves upward, the inner petal mold will be pushed and moved along its radial direction. At this time, the multiple inner petal molds of the cylinder are pushed one by one to move along its radial direction, so that the complete cylinder becomes a petal shape. When the inner petal mold is pushed to move along its radial direction, due to the cooperation between the annular groove 301 and the upper substrate 101, and the cooperation between the annular base 303 and the annular supporting portion 103, the inner petal mold can move stably, and no deflection force can be formed, thereby avoiding extrusion deformation of the inner petal mold.

[0041] Optional, such as Figure 4 As shown, there are two outer molds 200, and the outer molds are in the shape of clamps, and the surface of the clamps facing the inner petal mold is semicircular, so the two outer molds can clamp the entire outer surface of the interface of the pipe.

[0042] Optional, such as Figure 2-3 As shown, an annular protrusion 305 extending along the circumferential direction is provided on the surface of the cylinder, and an annular recess 205 extending along the transverse direction is provided on the surface of the outer mold facing the inner petal mold, and the annular protrusion 305 and the annular recess 205 cooperate to form at the pipe interface.

[0043] When in use, in the initial position, the cone of the inner flap mold driving part is at the lowest position, and the multiple inner flap molds form a cylinder; first, the interface of the pipe is placed between the annular gap formed by the outer mold and the multiple inner flap molds; then, the two outer molds start to move toward each other until they stop contacting the outer surface of the pipe; then, the cone starts to move upward, driving the inner flap mold to move outward along its radial direction, and the inner flap mold starts to contact the inner surface of the pipe, and under the extrusion of the inner flap mold and the outer mold, an annular protrusion S is formed at the interface of the pipe.

[0044] The limiting protrusion of the inner petal mold driving part provided by the utility model prevents the inner petal mold driving part from continuing to move upward, thereby avoiding the deformation of the inner petal mold caused thereby; in addition, the guide part can guide the inner petal mold driving part to move in the vertical direction, and the limiting groove can prevent the rotation of the inner petal mold driving part; furthermore, the cooperation between the annular groove and the upper base plate, and the cooperation between the annular base and the annular supporting part, enable the inner petal mold to move stably along its radial direction without forming a deflection force, thereby avoiding the extrusion deformation of the inner petal mold caused by the deflection force.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0046] Although the content of the utility model has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.

Claims

1. A pipe interface forming die, characterized in that: include: A base, wherein an opening is arranged in the middle of the base; An outer mold, which is placed on the upper surface of the base and is used to apply stress to the outer surface of the pipeline; A plurality of inner flap molds, the plurality of inner flap molds forming a cylinder, a through hole is provided in the middle of the cylinder, and the through hole is conical; the plurality of inner flap molds are arranged at the opening of the base, and can move limitedly along the radial direction of the opening, and are used to apply stress to the inner surface of the pipe, so as to cooperate with the outer mold to realize the forming of the pipe interface; The inner lobe mold driving part comprises a cone and a limiting protrusion, wherein the number of the limiting protrusions is two and they are respectively arranged on both sides of the bottom of the cone, and the limiting protrusions just touch the lower surface of the base when the inner lobe mold driving part reaches the maximum moving distance, thereby preventing the inner lobe mold driving part from continuing to move; wherein the inner lobe mold driving part is arranged in the through hole, and the cone cooperates with the through hole, and the movement of the inner lobe mold driving part drives the multiple inner lobe molds to move limitedly along the radial direction of the opening.

2. The pipe joint forming die according to claim 1, characterized in that: Also includes: The guide part is cylindrical and is arranged on the lower surface of the base. The guide part is used to guide the movement of the inner flap mold driving part.

3. The pipe joint forming die according to claim 2, characterized in that: The cylindrical guide portion comprises a circular accommodating hole, the circular accommodating hole matches with the bottom of the cone, the inner flap mold driving portion is placed in the circular accommodating hole and can move relative to the circular accommodating hole.

4. The pipe joint forming die according to claim 3, characterized in that: Limiting grooves extending along the axial direction of the cylinder are arranged on both sides of the accommodating circular hole, and the limiting grooves cooperate with the limiting protrusions.

5. The pipe joint forming die according to claim 1, characterized in that: The base comprises an upper substrate and a lower substrate. The upper substrate is provided with an opening, and the lower substrate is provided with an opening. The openings are both circular, and the diameter of the opening of the upper substrate is greater than the diameter of the opening of the lower substrate.

6. The pipe joint forming die according to claim 5, characterized in that: Steps are arranged around the opening of the upper surface of the lower substrate to form an annular supporting portion between the lower surface of the upper substrate and the upper surface of the lower substrate.

7. The pipeline interface forming die according to claim 6, characterized in that: An annular groove extending along the circumferential direction is arranged on the surface of the cylinder, and the annular groove cooperates with the upper base plate; an annular base is formed below the annular groove.

8. The pipeline joint forming die according to claim 7, characterized in that: The annular base is placed in the annular holding portion, and the annular base cooperates with the annular holding portion.

9. The pipeline joint forming die according to claim 1, characterized in that: There are two outer molds, each of which is in a clamp shape, and the surface of the clamp facing the inner petal mold is semicircular.

10. The pipeline interface forming die according to any one of claims 1 to 9, characterized in that: An annular protrusion extending along the circumferential direction is arranged on the surface of the cylinder, and an annular recess extending along the transverse direction is arranged on the surface of the outer mold facing the inner petal mold, and the annular protrusion and the annular recess cooperate to form at the pipe interface.

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