Equipment for punch forming of reducing pipe

Abstract

The utility model relates to the technical field of metal pipe processing, and particularly discloses a reducing pipe punch forming device which comprises a bottom plate, a base, a punching die assembly, a punching power assembly, a push plate and a metal pipe. The stamping die assembly is movably assembled on the top of the base, the push plate is fixedly assembled at the output end of the stamping power assembly, the metal pipe is fixedly assembled on the front face of the push plate, the telescopic assembly is fixedly assembled in an inner cavity of the metal pipe, and the inner supporting assembly is fixedly assembled at the output end of the telescopic assembly. The inner supporting assembly is sleeved with a metal pipe, the stamping power assembly provides power to drive the push plate to push the metal pipe to move towards the stamping die assembly, finally, stamping forming is completed at the stamping die assembly, the telescopic assembly can stretch out and draw back, the position of the inner supporting assembly is adjusted, and the metal pipe stamping device is applied to metal pipes of different lengths.

Description

Technical Field

[0001] This utility model relates to the field of metal pipe processing technology, specifically to a device for stamping and forming reducing pipes. Background Technology

[0002] In pipeline engineering and many industrial fields (such as petrochemicals, municipal water supply and drainage, power transmission, metallurgical manufacturing, etc.), reducers are the core components for connecting pipes of different diameters. The technical level of their stamping and forming process directly determines the connection reliability and overall performance of the pipeline system.

[0003] During the stamping and shrinking process of metal tubes, the metal tubes are subjected to circumferential compressive stress when shrinking in diameter. However, their own rigidity is limited, making them prone to wrinkling or instability defects due to the lack of material stability (which is more pronounced in thin-walled tubes) and insufficient radial support of the mold. At the same time, the metal tubes formed are closely fitted to the mold cavity and lack convenient demolding guidance structures, which not only makes demolding difficult and production efficiency low, but may also cause secondary damage such as scratches and deformation to the formed parts during demolding operations, increasing the risk of product scrap. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a device for stamping and forming reducing pipes, which has the advantages of ensuring the stability of the metal pipe stamping process and facilitating demolding, thus solving the problems of potential damage and inconvenient demolding that may occur during the stamping and reducing of metal pipe diameter.

[0005] This utility model discloses a device for stamping and forming a reducing tube, comprising a base plate, a base, a stamping die assembly, a stamping power assembly, a push plate, and a metal tube. The base and the stamping power assembly are respectively fixedly assembled on both sides of the top of the base plate. The stamping die assembly is movably assembled on the top of the base. The push plate is fixedly assembled on the output end of the stamping power assembly. The metal tube is fixedly assembled on the front side of the push plate. A telescopic assembly is fixedly assembled in the inner cavity of the metal tube. An inner support assembly is fixedly assembled at the output end of the telescopic assembly.

[0006] The inner support assembly includes an inner support body, small holes, cylindrical grooves, and a release module. The inner support body is fixedly assembled to the output end of the telescopic assembly. The inner support body has a cavity inside and is designed in two sections: the left section is a limiting section, and the right section is a supporting section. The small holes are evenly distributed in the right section of the inner support body. The cylindrical groove is distributed on the right end face of the inner support body, and a pushing component is installed in the cylindrical groove. Four guide grooves are evenly distributed on the surface of the inner support body at the position of the cylindrical groove. A release module is movably assembled in each guide groove. The pushing component is used to push the release module outward.

[0007] This utility model discloses a device for stamping and forming a reducing tube, wherein the pushing component includes a drive motor and a rotating plate. The drive motor is fixedly mounted in the inner cavity of the inner support body and on the other side of the cylindrical groove. The output shaft of the drive motor is fixedly mounted with the rotating plate, and the rotating plate is movably disposed in the inner cavity of the cylindrical groove. The outer side of the rotating plate is integrally formed with pushing teeth that correspond one-to-one with the demolding module.

[0008] This utility model discloses a device for stamping and forming a reducing pipe, wherein the moving distance of the detachment module is less than the wall thickness of the metal pipe.

[0009] The present invention relates to a device for stamping and forming a reducing tube, wherein each of the detaching modules is fixedly provided with an elastic rope on its side, and one end of the elastic rope is fixedly connected to the inner wall of the cylindrical groove.

[0010] This utility model discloses a device for stamping and forming a reducing tube, wherein the left section of the inner support body has two symmetrically opened air bladder holes, and an air bladder is installed in each air bladder hole.

[0011] This utility model discloses a device for stamping and forming a reducing pipe, wherein the telescopic component has a hollow structure inside, and wires and pipes pass through it.

[0012] This utility model discloses a device for stamping and forming a reducing pipe, wherein the stamping die assembly includes two fixing plates, the two fixing plates are symmetrical and fixedly disposed on the top of the base, and a cylinder is fixedly disposed in the inner cavity of each of the two fixing plates, and a die body is fixedly disposed at the output end of each of the two cylinders.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The outer diameter of the limiting section of the inner support body of this utility model is the same as the inner diameter of the metal tube, which can ensure that the metal tube and the cavity of the stamping die are coaxial. The limiting section is equipped with an air bladder. The expansion of the air bladder can assist in fixing the metal tube, increasing the stability of the metal tube. The support section supports the reduced diameter section of the metal tube, which can prevent the metal tube from being damaged or wrinkled.

[0015] 2. The inner support body of this utility model has small holes evenly opened on the support section. After the diameter is reduced, an external air pump is used to deliver air. The air flows out of the small holes and forms an air film between the support section and the metal tube. The air film separates the metal tube from the inner support component, making demolding easier.

[0016] 3. While conveying air to form an air film, the drive motor drives the rotating plate to rotate, causing the demolding module to move outward. Then, the inner support body moves to the left, and the demolding module will contact the reduced diameter end of the metal tube and remove the metal tube from the stamping die, further facilitating demolding.

[0017] 4. The mold body of this utility model is designed with splicing. During demolding, the two mold bodies move to the sides, which facilitates demolding.

[0018] 5. The telescopic component of this utility model can adjust the position of the inner support body by telescopic movement, and can be applied to metal pipes of different lengths. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is one of the three-dimensional schematic diagrams of this utility model;

[0021] Figure 2 This is the second three-dimensional schematic diagram of the present utility model;

[0022] Figure 3 This is a schematic diagram of the telescopic component and the internal support component of this utility model;

[0023] Figure 4 This is a schematic diagram of the internal support component structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the demolding section structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the detachable module and elastic rope structure of this utility model;

[0026] Figure 7 This is a schematic diagram of the stamping die assembly structure of this utility model.

[0027] In the diagram: 1. Base plate; 2. Base; 3. Stamping die assembly; 301. Fixing plate; 302. Cylinder; 303. Die body; 4. Stamping power assembly; 5. Push plate; 6. Metal tube; 7. Telescopic assembly; 8. Inner support assembly; 801. Inner support body; 802. Small hole; 803. Cylindrical groove; 804. Drive motor; 805. Rotating plate; 806. Pushing gear; 807. Demounting module; 808. Guide groove; 809. Elastic rope; 810. Airbag. Detailed Implementation

[0028] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0029] Please see Figure 1-7 The present invention provides a device for stamping and forming a reducing pipe, comprising a base plate 1, a base 2, a stamping die assembly 3, a stamping power assembly 4, a push plate 5, and a metal pipe 6. The base 2 and the stamping power assembly 4 are respectively fixedly assembled on both sides of the top of the base plate 1. The stamping die assembly 3 is movably assembled on the top of the base 2. The push plate 5 is fixedly assembled on the output end of the stamping power assembly 4. The metal pipe 6 is fixedly assembled on the front side of the push plate 5. A telescopic assembly 7 is fixedly assembled in the inner cavity of the metal pipe 6. An inner support assembly 8 is fixedly assembled at the output end of the telescopic assembly 7.

[0030] The metal tube 6 is fitted on the outside of the inner support component 8. The stamping power component 4 provides power, which drives the push plate 5 to push the metal tube 6 towards the stamping die component 3. Finally, the stamping is completed at the stamping die component 3. The telescopic component 7 can extend and retract to adjust the position of the inner support component 8 and can be applied to metal tubes 6 of different lengths.

[0031] The inner support assembly 8 includes an inner support body 801, a small hole 802, a cylindrical groove 803, and a detachable module 807. The inner support body 801 is fixedly assembled to the output end of the telescopic assembly 7. The inner support body 801 has a cavity inside and is designed in two sections, left and right. The left section is a limiting section and the right section is a supporting section.

[0032] The shape of the inner support 801 matches the cavity of the stamping die, and the outer diameter of the limiting section is the same as the inner diameter of the metal tube 6. This is used to ensure that the metal tube 6 is coaxial with the cavity of the stamping die. During the stamping process of the metal tube 6, the support section supports the reduced diameter section of the metal tube 6 to prevent damage, wrinkles, etc. from occurring on the metal tube.

[0033] The support section is divided into an air outlet section and a demolding section, which are connected by threads. The number of air outlet sections can be increased or decreased according to processing requirements, thereby adjusting the length of the support section, which is suitable for different diameter reduction lengths.

[0034] Small holes 802 are evenly distributed on the air outlet section of the inner support body 801.

[0035] Small holes 802 are evenly distributed on the support section of the inner support body 801. The diameter of the small holes 802 is small to avoid damage to the inner wall of the metal tube 6 during the diameter reduction process. After the diameter reduction is completed, an external air pump supplies air. The air flows out of the small holes 802 and forms an air film between the support section and the metal tube 6. There are multiple sets of small holes 802, which are arranged at equal distances on the left, center and right of the support section of the inner support body 801. By setting multiple sets of small holes 802, an air film is evenly formed, which further facilitates the removal of the metal tube 6 from the inner support body 801.

[0036] In addition, a chamfer can also be provided on the small hole 802 to further reduce damage to the inner wall of the metal tube 6.

[0037] A cylindrical groove 803 is formed on the right end face of the inner support body 801. A pushing component is installed in the cylindrical groove 803. Four guide grooves 808 are evenly formed on the surface of the inner support body 801 at the position of the cylindrical groove 803. A detachable module 807 is movably installed in each guide groove 808. The pushing component is used to push the detachable module 807 to move outward.

[0038] When placing the metal tube 6, it is necessary to ensure that the right end of the metal tube 6 is located to the left of the right end of the inner support 801, that is, the right end of the inner support 801 needs to be exposed above the right end of the metal tube 6. A cylindrical groove 803 is provided on the right end face of the inner support 801, so that the outer ring of the right end face of the inner support 801 forms an annular protrusion.

[0039] The pushing assembly includes a drive motor 804 and a rotating plate 805. The drive motor 804 is fixedly mounted in the inner cavity of the inner support body 801 and on the other side of the cylindrical groove 803. The output shaft of the drive motor 804 is fixedly mounted on the rotating plate 805, and the rotating plate 805 is movably disposed in the inner cavity of the cylindrical groove 803. The outer side of the rotating plate 805 is integrally formed with pushing teeth 806 that correspond one-to-one with the detachment module 807. The moving distance of the detachment module 807 is less than the wall thickness of the metal tube 6.

[0040] The cylindrical groove 803 and the pushing assembly are located in the demolding section. The output shaft of the drive motor 804 is equipped with a rotating plate 805, which is located inside the cylindrical groove 803. Four pushing teeth 806 are integrally formed on the outer side of the rotating plate 805. Four guide grooves 808 are evenly opened on the annular protrusion. The demolding module 807 is moved and assembled in the guide grooves 808. During the stamping process, the outer end of the demolding module 807 will not be exposed on the annular protrusion. Before demolding is completed, air is delivered to form an air film. At the same time, the drive motor 804 runs and drives the rotating plate 805 to rotate, causing the demolding module 807 to move outward. Then the inner support body 801 moves to the left. The demolding module 807 will contact the reduced diameter end of the metal tube 6 and remove the metal tube 6 from the stamping die, completing the demolding. After that, the demolding module 807 is reset, and the metal tube 6 can be removed.

[0041] Each detachable module 807 has an elastic rope 809 fixedly installed on its side, and one end of the elastic rope 809 is fixedly connected to the inner wall of the cylindrical groove 803.

[0042] An elastic rope 809 is provided between the release module 807 and the annular protrusion. The elastic rope 809 is installed at one end of the plane of the cylindrical groove 803 to facilitate the resetting of the release module 807.

[0043] The left section of the inner support 801 has two symmetrical air bladder holes, and an air bladder 810 is installed in each air bladder hole.

[0044] The airbag 810 can be inflated to fix the metal tube 6. Before removing the metal tube 6, the airbag 810 can be deflated to shrink it.

[0045] The telescopic component 7 has a hollow internal structure, and wires and pipes pass through its interior.

[0046] The telescopic component 7 has a hollow interior design for the passage of wires and pipes. The wires are connected to the drive motor 804, and the pipes are configured as airbag pipes and air membrane pipes depending on their function. The airbag pipes are connected to the airbag 810, and the air membrane pipes are connected to the small hole 802.

[0047] The stamping die assembly 3 includes two fixing plates 301, which are symmetrical and fixedly mounted on the top of the base 2. Cylinders 302 are fixedly mounted in the inner cavity of both fixing plates 301, and die bodies 303 are fixedly mounted at the output ends of both cylinders 302.

[0048] The stamping die is composed of two die bodies 303 spliced ​​together. During demolding, two cylinders 302 drive the two die bodies 303 to move to both sides to facilitate demolding. At the same time, when the die bodies 303 are pulled open, it is easy to move the metal tube 6 onto the inner support assembly 8.

[0049] To facilitate demolding, air holes can be provided on the cavity surface of the mold body 303 to form an air film, reducing the difficulty of demolding and avoiding damage to the surface of the metal tube 6 during demolding.

[0050] When using this type of reducing tube stamping equipment: the metal tube 6 is sleeved on the outside of the inner support body 801, and the air bag 810 is inflated to fix the metal tube 6. The stamping power component 4 provides power, driving the push plate 5 to push the metal tube 6 towards the stamping die assembly 3. The stamping is completed by the stamping die assembly 3. After the diameter reduction is completed, an external air pump supplies air. The air flows out of the small hole 802 and forms an air film between the support section and the metal tube 6. While supplying air to form an air film, the drive motor 804 runs and drives the rotating plate 805 to rotate, causing the demolding module 807 to move outward. Then the inner support body 801 moves to the left, and the demolding module 807 will contact the reduced diameter end of the metal tube 6 and remove the metal tube 6 from the stamping die, completing the demolding. Then the air bag 810 is evacuated to shrink the air bag 810. Then the demolding module 807 is reset, and the metal tube 6 can be removed.

[0051] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A device for the press forming of a reducing pipe comprising a base plate (1), a base (2), a press die assembly (3), a press power assembly (4), a push plate (5) and a metal pipe (6), characterized in that: The base (2) and the stamping power assembly (4) are respectively fixedly assembled on both sides of the top of the bottom plate (1), the stamping die assembly (3) is movably assembled on the top of the base (2), the push plate (5) is fixedly assembled on the output end of the stamping power assembly (4), the metal pipe (6) is fixedly assembled on the front face of the push plate (5), the inner cavity of the metal pipe (6) is fixedly assembled with the telescopic assembly (7), and the output end of the telescopic assembly (7) is fixedly assembled with the inner support assembly (8). The inner support assembly (8) comprises an inner support body (801), a small hole (802), a cylindrical groove (803) and a demolding module (807), the inner support body (801) is fixedly assembled on the output end of the telescopic assembly (7), a cavity is formed in the inner support body (801), and the inner support body (801) is designed in two sections, i.e., a limiting section on the left and a supporting section on the right, the small holes (802) are uniformly formed in the right section of the inner support body (801), the cylindrical groove (803) is formed in the right end face of the inner support body (801), the cylindrical groove (803) is assembled with a pushing assembly, four guide grooves (808) are uniformly formed in the surface of the inner support body (801) and located at the position of the cylindrical groove (803), and the demolding module (807) is movably assembled in each guide groove (808); the pushing assembly is used for pushing the demolding module (807) to move outward.

2. The apparatus for swaging a reducer according to claim 1, wherein: The pushing assembly comprises a driving motor (804) and a rotating plate (805), the driving motor (804) is fixedly assembled in the cavity of the inner support body (801) and located at the other side of the cylindrical groove (803), the output shaft of the driving motor (804) is fixedly assembled with the rotating plate (805), and the rotating plate (805) is movably arranged in the cavity of the cylindrical groove (803), and the outer side of the rotating plate (805) is integrally formed with a pushing tooth (806) corresponding to the demolding module (807).

3. The apparatus for swaging a reducer according to claim 1, wherein: The moving distance of the demolding module (807) is less than the wall thickness of the metal pipe (6).

4. The apparatus for swaging a reducer according to claim 1, wherein: An elastic rope (809) is fixedly arranged on the side face of each demolding module (807), and one end of the elastic rope (809) is fixedly connected with the inner wall of the cylindrical groove (803).

5. The apparatus for swaging a reducer according to claim 1, wherein: Two air bag holes are symmetrically formed in the left section of the inner support body (801), and an air bag (810) is arranged in each air bag hole.

6. The apparatus for swaging a reducer according to claim 1, wherein: The telescopic assembly (7) is of a hollow structure, and wires and pipelines are arranged in the telescopic assembly (7).

7. The apparatus for swaging a reducer according to claim 1, wherein: The stamping die assembly (3) comprises two fixed plates (301), the two fixed plates (301) are symmetrically and fixedly arranged on the top of the base (2), the inner cavities of the two fixed plates (301) are fixedly arranged with air cylinders (302), and the output ends of the two air cylinders (302) are fixedly arranged with die bodies (303).

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