Metal corrugated pipe manufacturing equipment

Abstract

The utility model discloses metal corrugated pipe manufacturing equipment which comprises a plurality of stamping parts, a plurality of stamping dies and an adjusting mechanism used for adjusting the pipe blank feeding amount, the stamping parts are annularly distributed on the inner side of a pipe blank, the stamping dies are annularly distributed on the outer side of the pipe blank, and the adjusting mechanism is used for adjusting the pipe blank feeding amount. And the stamping part and / or the stamping die can do internal and external telescopic motion. A manufacturing method of a metal corrugated pipe comprises a corrugation forming procedure, specifically, stamping parts synchronously extend outwards and / or stamping dies synchronously contract inwards, so that a corrugation is formed on a pipe blank; all the stamping parts synchronously contract inwards to reset and / or all the stamping dies synchronously extend outwards to reset, and the adjusting mechanism drives the pipe blank to ascend or descend by a set distance; or, the adjusting mechanism drives the stamping part and the stamping die to ascend or descend by a set distance, and preparation is made for forming the next corrugation. The device has the advantages of adaptability to various specifications, simplicity in operation, short processing time and the like.

Description

Technical Field

[0001] This utility model relates to pipe forming equipment, and more particularly to a metal corrugated pipe manufacturing equipment. Background Technology

[0002] Chinese patent document CN 114633078 A discloses a method for manufacturing a metal corrugated pipe. The method involves placing the pipe within a forming frame with forming grooves, using the frame to constrain the pipe, and then using rollers to move along the grooves and press the pipe, thus creating a complete corrugated structure around the pipe. Compared to existing manufacturing methods that involve forming each of the four sides separately and then welding them, this method can roll-form a complete corrugated structure in one step, simplifying the process, increasing efficiency, and reducing the number of welds, thereby reducing welding stress concentration and weld cracking.

[0003] The existing method for manufacturing metal bellows requires a set of molds for each bellows specification. If the specifications of the bellows change (e.g., corrugation depth, corrugation pitch, and / or corrugation number), a new set of molds needs to be made, which is time-consuming and costly. Furthermore, each corrugation needs to be rolled by rollers for one revolution, which is not conducive to further shortening the processing cycle. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the existing technology and provide a metal corrugated pipe manufacturing equipment that can adapt to various specifications, is simple to operate, and has a short processing time.

[0005] This utility model further provides a method for manufacturing the above-mentioned metal corrugated pipe manufacturing equipment.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A metal corrugated pipe manufacturing equipment includes stamping parts, stamping dies, and an adjustment mechanism for adjusting the feed amount of the tube blank. The stamping parts are provided in multiple and arranged in a ring on the inner side of the tube blank, and the stamping dies are provided in multiple and arranged in a ring on the outer side of the tube blank. The stamping parts and / or the stamping dies can extend and retract inward and outward.

[0008] As a further improvement to the above technical solution: the adjustment mechanism includes a lifting platform, on which the tube blank is disposed; or, the stamping part and the stamping die are disposed on the lifting platform.

[0009] As a further improvement to the above technical solution: the metal corrugated pipe manufacturing equipment also includes a first driving mechanism and a second driving mechanism, the stamping part is connected to the first driving mechanism, and the stamping die is connected to the second driving mechanism.

[0010] As a further improvement to the above technical solution: the first driving mechanism includes a conical extrusion head and a lifting drive for driving the extrusion head to rise and fall, and each of the stamping parts has a conical surface that cooperates with the extrusion head on its inner side.

[0011] As a further improvement to the above technical solution: the first driving mechanism further includes a guide seat and an elastic reset member, the stamping member is disposed on the mounting base, the guide seat and the mounting base are connected by a guide structure, and the elastic reset member is disposed between the guide seat and the mounting base.

[0012] As a further improvement to the above technical solution: the guide structure includes a guide post located at the lower end of the mounting base and a guide hole located on the guide base, the guide post passing through the guide hole, and the elastic reset member being a spring sleeved on the guide post.

[0013] As a further improvement to the above technical solution: the second driving mechanism includes multiple telescopic driving components, and the multiple telescopic driving components are connected to the multiple stamping dies one by one.

[0014] As a further improvement to the above technical solution, the metal corrugated pipe manufacturing equipment also includes a shaping wheel, which is arranged on the inner and outer sides of the tube blank.

[0015] As a further improvement to the above technical solution: the stamped part is an expansion piece, and the inner side of the stamping die is provided with a forming groove that cooperates with the expansion piece.

[0016] A method for manufacturing a metal corrugated pipe includes a corrugation forming process.

[0017] Each stamped part extends outward synchronously and / or each stamping die contracts inward synchronously, thereby forming a corrugation on the tube blank;

[0018] Each stamped part synchronously retracts inward to reset and / or each stamping die synchronously extends outward to reset, and the adjusting mechanism drives the tube blank to rise or fall by a set distance; or, the adjusting mechanism drives the stamped part and the stamping die to rise or fall by a set distance to prepare for forming the next corrugation.

[0019] As a further improvement to the above technical solution:

[0020] It also includes the tube blank preparation process prior to the corrugation forming process.

[0021] Weld the two ends of a long strip plate to form a cylindrical part, and then flare one end of the cylindrical part into a conical structure to obtain a tube blank;

[0022] And / or, it also includes a corrugation shaping process following the corrugation forming process.

[0023] Shaping wheels are arranged on both the inner and outer sides of the tube embryo. As the shaping wheels rotate, the tube embryo moves at least one revolution to complete the shaping.

[0024] Compared with the prior art, the advantages of this utility model are:

[0025] This utility model discloses a metal corrugated pipe manufacturing equipment. During operation, a pipe blank is placed between stamping parts and stamping dies. Multiple stamping parts extend outwards and / or multiple stamping dies retract inwards, forming a corrugation on the pipe blank. Then, the stamping parts and stamping dies are reset, and an adjusting mechanism moves the pipe blank axially a set distance to complete the feed, or the adjusting mechanism moves the stamping parts and stamping dies axially a set distance to complete the feed, preparing for the formation of the next corrugation. This cycle repeats. By adjusting the extension and retraction stroke of the stamping parts and stamping dies, as well as the feed amount and number of feeds of the adjusting mechanism, the corrugation depth, corrugation pitch, and number of corrugations can be adjusted to accommodate various specifications. Furthermore, multiple stamping parts and stamping dies operate synchronously, forming the entire corrugation in one pass. Compared to rolling a full circle with rollers, this method is simpler to operate, has shorter processing time, and is more efficient.

[0026] The metal corrugated pipe manufacturing method disclosed in this utility model involves multiple stamping parts extending outward and / or multiple stamping dies retracting inward to form a corrugation on the pipe blank. Compared with rolling a full circle with rollers, multiple stamping parts and stamping dies move synchronously to form the entire corrugation in one go, which is simpler to operate, has a shorter processing time, and is more efficient. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the metal corrugated pipe manufacturing equipment of this utility model.

[0028] Figure 2 This is a three-dimensional structural diagram of the internal structure of the metal corrugated pipe manufacturing equipment of this utility model.

[0029] Figure 3 This is a longitudinal sectional view of the metal corrugated pipe manufacturing equipment of this utility model.

[0030] Figure 4 This is a cross-sectional view of the metal corrugated pipe manufacturing equipment of this utility model.

[0031] Figure 5 This is a schematic diagram of the elongated plate involved in the manufacturing method of the metal corrugated pipe of this utility model.

[0032] Figure 6 This is a schematic diagram of the cylindrical component involved in the manufacturing method of the metal corrugated pipe of this utility model.

[0033] Figure 7 This is a cross-sectional structural diagram of the cylindrical component involved in the manufacturing method of the metal corrugated pipe of this utility model.

[0034] Figure 8 This is a schematic diagram of the structure before corrugation is formed in the metal corrugated pipe manufacturing method of this utility model.

[0035] Figure 9 This is a schematic diagram of the structure of the metal corrugated pipe manufacturing method of this utility model when forming corrugations.

[0036] Figure 10 This is a schematic diagram of the uneven state of the metal corrugated pipe after the corrugations are formed, according to the manufacturing method of this utility model.

[0037] Figure 11 This is a three-dimensional structural diagram of the metal corrugated pipe manufacturing method of this utility model during the shaping process.

[0038] Figure 12 yes Figure 11 A magnified view of a portion of the image.

[0039] Figure 13 This is a three-dimensional structural diagram of the corrugated pipe obtained by the metal corrugated pipe manufacturing method of this utility model.

[0040] The labels in the diagram represent:

[0041] 1. Tube blank; 11. Long strip plate; 12. Cylindrical part; 2. Adjustment mechanism; 3. Stamping part; 31. Conical part; 4. First drive mechanism; 41. Extrusion head; 42. Lifting drive component; 43. Guide seat; 44. Elastic reset component; 45. Mounting seat; 46. Guide column; 5. Stamping die; 51. Groove; 6. Second drive mechanism; 61. Telescopic drive component; 7. Forming wheel. Detailed Implementation

[0042] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] Example 1

[0047] Figures 1 to 4 An embodiment of the metal corrugated pipe manufacturing equipment of this utility model is shown. The metal corrugated pipe manufacturing equipment of this embodiment includes a stamping part 3, a stamping die 5 and an adjusting mechanism 2 for adjusting the feed amount of the tube blank 1. The stamping part 3 is provided in multiple and is distributed in a ring on the inner side of the tube blank 1. The stamping die 5 is provided in multiple and is distributed in a ring on the outer side of the tube blank 1. The stamping part 3 and the stamping die 5 can move inward and outward.

[0048] In this embodiment of the metal corrugated pipe manufacturing equipment, during operation, the pipe blank 1 is placed between the stamping parts 3 and the stamping dies 5. Multiple stamping parts 3 extend outward, and multiple stamping dies 5 simultaneously retract inward, thus forming a corrugation on the pipe blank 1. This helps ensure the processing quality of the corrugation. Of course, in other embodiments, only the stamping parts 3 extend outward while the stamping dies 5 remain stationary, or the stamping parts 3 remain stationary while only the stamping dies 5 retract inward, which can also form a corrugation. Then, the stamping parts 3 and stamping dies 5 are reset, and the adjusting mechanism 2 drives the pipe blank 1 to move axially a set distance to complete the feed, or the adjusting mechanism 2 drives the stamping parts 3 and stamping dies 5 to move axially a set distance along the pipe blank 1 to complete the feed, preparing for the formation of the next corrugation, and so on. By adjusting the extension and retraction stroke of the stamping parts 3 and stamping dies 5, as well as the feed amount and feed frequency of the adjusting mechanism 2, the corrugation depth, corrugation pitch, and number of corrugations of the corrugated pipe can be adjusted, thereby adapting to various specifications. Furthermore, multiple stamping parts 3 and stamping dies 5 operate simultaneously to form the entire corrugation in one go. Compared to rolling a whole circle with rollers, this method is simpler to operate, takes less time to process, and is more efficient.

[0049] Furthermore, in this embodiment, the adjusting mechanism 2 includes a lifting platform, on which the tube blank 1 is placed. The tube blank 1 can be moved axially by the lifting movement of the lifting platform to complete the feeding, which is simple and effective. Of course, in other embodiments, the stamping part 3 and the stamping die 5 can also be placed on the lifting platform. The stamping part 3 and the stamping die 5 can be moved axially by the lifting movement of the lifting platform to complete the feeding, while the tube blank 1 remains stationary, which can also produce a corrugated pipe.

[0050] Furthermore, in this embodiment, the metal corrugated pipe manufacturing equipment also includes a first driving mechanism 4 and a second driving mechanism 6. The stamping part 3 is connected to the first driving mechanism 4, and the stamping die 5 is connected to the second driving mechanism 6. Since multiple stamping parts 3 extend outward and multiple stamping dies 5 retract inward synchronously during corrugation forming, the first driving mechanism 4 and the second driving mechanism 6 are respectively provided to drive the stamping parts 3 and the stamping dies 5 to extend and retract. Of course, in other embodiments, only the first driving mechanism 4 or the second driving mechanism 6 may be provided.

[0051] Furthermore, in this embodiment, the first driving mechanism 4 includes a conical extrusion head 41 and a lifting drive component 42 (e.g., a cylinder, hydraulic cylinder, or lead screw and nut assembly) for driving the extrusion head 41 to rise and fall. Each stamping part 3 has a conical surface 31 on its inner side that mates with the extrusion head 41. During operation, the lifting drive component 42 drives the conical extrusion head 41 to rise and fall. The conical surface 31 of each stamping part 3 mates with the extrusion head 41, converting the rising and falling motion of the extrusion head 41 into the inward and outward extension and retraction motion of each stamping part 3. The structure is simple and effective.

[0052] Furthermore, in this embodiment, the first driving mechanism 4 also includes a guide seat 43 and an elastic reset member 44. The stamped part 3 is disposed on the mounting base 45. The guide seat 43 and the mounting base 45 are connected by a guide structure, and the elastic reset member 44 is disposed between the guide seat 43 and the mounting base 45. When the stamped part 3 extends outward under the push of the extrusion head 41, the guide structure provides guidance for the mounting base 45 and the stamped part 3, ensuring smooth and stable movement and preventing deviation. At the same time, the elastic reset member 44 is compressed and corrugated. After the extrusion head 41 resets, the compressed elastic reset member 44 is released, pushing the mounting base 45 and the stamped part 3 to reset. The structure is simple, reliable, and highly automated.

[0053] In a preferred embodiment, the guide structure includes a guide post 46 located at the lower end of the mounting base 45 and a guide hole located on the guide seat 43. The guide post 46 passes through the guide hole, and the elastic reset member 44 is a spring sleeved on the guide post 46. The guide post 46 and the guide hole cooperate to provide good guidance, ensuring smooth and stable movement and preventing deviation. At the same time, the spring can also be reliably installed on the guide post 46 to prevent displacement, achieving two benefits in one step.

[0054] In a preferred embodiment, the second drive mechanism 6 includes multiple telescopic drive components 61 (e.g., cylinders, hydraulic cylinders, or lead screw and nut pairs), each of which is connected to a corresponding stamping die 5. During operation, the multiple telescopic drive components 61 move synchronously, causing each stamping die 5 to extend and retract synchronously, resulting in a simple and effective structure.

[0055] Furthermore, the metal corrugated pipe manufacturing equipment also includes shaping wheels 7, which are arranged on the inner and outer sides of the tube blank 1. After the stamping part 3 and the stamping die 5 are used to form corrugations on the tube blank 1, there may be uneven areas in the corrugations. By rotating the shaping wheels 7 on the inner and outer sides, the corrugations can be shaped in various places, which helps to improve the appearance quality and dimensional accuracy of the corrugated pipe.

[0056] In this embodiment, the stamped part 3 is an expansion piece, and the inner side of the stamping die 5 is provided with a forming groove 51 that mates with the expansion piece. The expansion piece mates with the forming groove 51 to form the required corrugations.

[0057] Example 2

[0058] Figures 5 to 13 This invention illustrates an embodiment of a method for manufacturing a metal corrugated pipe, which includes a corrugation forming process.

[0059] Each stamped part 3 extends outward synchronously, while each stamping die 5 retracts inward synchronously, thereby forming a corrugation on the tube blank 1;

[0060] Each stamped part 3 retracts inward to reset simultaneously, while each stamping die 5 extends outward to reset simultaneously. The adjusting mechanism 2 drives the tube blank 1 to rise or fall by a set distance to prepare for forming the next corrugation.

[0061] In the metal corrugated pipe manufacturing method of this embodiment, multiple stamping parts 3 extend outward, while multiple stamping dies 5 simultaneously retract inward, thus forming a corrugation on the tube blank 1. Compared with rolling a whole circle with rollers, the simultaneous action of multiple stamping parts 3 and stamping dies 5 forms the entire corrugation in one go, which is simpler to operate, shorter to process, and more efficient.

[0062] Furthermore, in this embodiment, the metal corrugated pipe manufacturing method also includes a tube blank 1 preparation process prior to the corrugation forming process.

[0063] The two ends of the long strip plate 11 are welded to form a cylindrical part 12. The cross-section of the cylindrical part 12 can be determined as needed, for example, it can be rectangular with smooth transitions between adjacent sides. Then, one end of the cylindrical part 12 is flared into a conical structure to obtain the tube blank 1. Since the tube blank 1 has a thin wall, placing the tube blank 1 with the conical flared structure on the lifting platform can improve stability and also facilitate the placement of the tube blank 1 between the stamping part 3 and the stamping die 5.

[0064] And, it also includes the corrugation shaping process after the corrugation forming process,

[0065] Shaping wheels 7 are arranged on both the inner and outer sides of the tube blank 1. When the shaping wheels 7 rotate, the tube blank 1 moves at least one revolution to complete the shaping. After the stamping part 3 and the stamping die 5 are used to form corrugations on the tube blank 1, there may be uneven areas in the corrugations. Shaping the corrugations by rotating the shaping wheels 7 helps to improve the appearance quality and dimensional accuracy of the corrugated tube.

[0066] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A metal corrugated pipe manufacturing equipment, characterized in that: It includes a stamping part (3), a stamping die (5) and an adjustment mechanism (2) for adjusting the feed amount of the tube blank (1). The stamping part (3) is provided in multiple and arranged in a ring on the inner side of the tube blank (1). The stamping die (5) is provided in multiple and arranged in a ring on the outer side of the tube blank (1). The stamping part (3) and / or the stamping die (5) can move inward and outward.

2. The metal corrugated pipe manufacturing equipment according to claim 1, characterized in that: The adjustment mechanism (2) includes a lifting platform, on which the tube blank (1) is disposed; or, the stamping part (3) and the stamping die (5) are disposed on the lifting platform.

3. The metal corrugated pipe manufacturing equipment according to claim 1, characterized in that: It also includes a first drive mechanism (4) and a second drive mechanism (6), the stamping part (3) is connected to the first drive mechanism (4), and the stamping die (5) is connected to the second drive mechanism (6).

4. The metal corrugated pipe manufacturing equipment according to claim 3, characterized in that: The first driving mechanism (4) includes a conical extrusion head (41) and a lifting drive (42) for driving the extrusion head (41) to rise and fall. Each of the stamping parts (3) has a conical part (31) on its inner side that cooperates with the extrusion head (41).

5. The metal corrugated pipe manufacturing equipment according to claim 4, characterized in that: The first drive mechanism (4) further includes a guide seat (43) and an elastic reset member (44). The stamping member (3) is disposed on the mounting base (45). The guide seat (43) and the mounting base (45) are connected by a guide structure. The elastic reset member (44) is disposed between the guide seat (43) and the mounting base (45).

6. The metal corrugated pipe manufacturing equipment according to claim 5, characterized in that: The guide structure includes a guide post (46) located at the lower end of the mounting base (45) and a guide hole located on the guide seat (43). The guide post (46) passes through the guide hole, and the elastic reset member (44) is a spring and is sleeved on the guide post (46).

7. The metal corrugated pipe manufacturing equipment according to claim 3, characterized in that: The second drive mechanism (6) includes multiple telescopic drive components (61), and the multiple telescopic drive components (61) are connected one-to-one with the multiple stamping dies (5).

8. The metal corrugated pipe manufacturing equipment according to any one of claims 1 to 7, characterized in that: The stamped part (3) is an expansion piece, and the stamping die (5) has a forming groove (51) on its inner side that cooperates with the expansion piece.

9. The metal corrugated pipe manufacturing equipment according to any one of claims 1 to 7, characterized in that: It also includes a shaping wheel (7), which is arranged on the inner and outer sides of the tube blank (1).

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