High efficiency pipe expander for stainless steel pipe

Abstract

This utility model provides a high-efficiency expanding machine for stainless steel pipes, including a worktable, wherein: a pipe extrusion holder is fixedly installed on the worktable, a first step seat is rotatably installed on one side of the worktable, and a second step seat is fixedly installed on the other side of the worktable, with expanders fixedly installed on the first and second step seats respectively, and a universal flexible clamp is fixedly installed on the worktable, located below the pipe extrusion holder; the overall design of this utility model can not only simultaneously expand both ends of the stainless steel pipe, improving expanding efficiency, but also expand one end of the stainless steel pipe separately when the length of the stainless steel pipe is greater than the distance between the two expanders, and can also expand some irregularly shaped stainless steel pipes, thereby greatly improving the overall flexibility and convenience.

Description

Technical Field

[0001] This utility model relates to the field of expanding machines, and in particular to a high-efficiency expanding machine for stainless steel pipes. Background Technology

[0002] The expansion machine is a type of straight seam welded metal pipe shaping equipment. It uses a conical expansion head to expand the steel pipe to form the required diameter.

[0003] However, existing expanding machines, such as double-head expanding machines, cannot expand the diameter of stainless steel pipes when the length of the pipe exceeds the length of the expanding machine. They are also not suitable for expanding the diameter of some irregularly shaped stainless steel pipes, thus having certain limitations.

[0004] Therefore, it is essential to invent a high-efficiency expanding machine for stainless steel pipes. Utility Model Content

[0005] To solve the above-mentioned technical problems, the present invention provides a high-efficiency expanding machine for stainless steel pipes, the technical solution of which is as follows: a high-efficiency expanding machine for stainless steel pipes includes a worktable, wherein: a pipe extrusion holder is fixedly installed on the worktable, a first step seat is rotatably installed on one side of the worktable, a second step seat is fixedly installed on the other side of the worktable, an expander is fixedly installed on the first step seat and the second step seat, and a universal flexible clamp is fixedly installed on the worktable, the universal flexible clamp being located below the pipe extrusion holder.

[0006] The pipe extrusion clamp includes a U-shaped bracket, an electric push rod, and a pipe pressing block. One end of the U-shaped bracket is fixedly connected to the rear side of the worktable, and the other end of the U-shaped bracket is fixedly installed with an electric push rod. The electric push rod is located above the worktable, and the output end of the electric push rod is fixedly installed with a pipe pressing block. The electric push rod is coaxial with a universal flexible clamp, and the pipe pressing block is located on the universal flexible clamp and in the opening of the U-shaped bracket.

[0007] The expander includes a tailstock, an endstock, a hydraulic cylinder, an electric rotary table, and an expander head. The hydraulic cylinder is fixedly mounted on the corresponding first and second step seats via the tailstock and the endstock. The output end of the hydraulic cylinder slides out from the endstock and is fixedly connected to the electric rotary table via a support bracket. The output end of the electric rotary table is detachably and fixedly mounted with several expander heads of different specifications in a circumferential array. The support bracket is slidably connected to the endstock, and all the expander heads face one side of the worktable.

[0008] The support frame includes a support rod, a connecting seat, and a buffer cap. Two support rods are provided, and one end of each support rod is fixedly connected by the connecting seat. The support rod is slidably mounted on the end seat, and both ends of the support rod protrude from the end seat. A buffer cap is fixedly installed on the other end of the support rod. One side of the connecting seat is fixedly connected to the output end of the hydraulic cylinder, and the other side of the connecting seat is fixedly connected to the electric rotary table.

[0009] The workbench has an annular cavity that divides it into two parts. An installation cavity is located at the center of the workbench and is situated below the annular cavity. The installation cavity is coaxially connected to the annular cavity, and one end of the first step seat is rotatably installed in the annular cavity.

[0010] A driver is fixedly installed at one end of the first stepped seat. The driver includes a rotating shaft and a motor. The rotating shaft is fixedly installed above the first stepped seat. The output end of the motor is fixedly connected to the lower part of the first stepped seat. The motor is located below the rotating shaft. The motor and the rotating shaft are coaxial. The motor is coaxially fixedly installed in the mounting cavity. The rotating shaft is coaxially rotatably installed in the annular cavity.

[0011] Compared with the prior art, the advantages of this utility model are:

[0012] The overall design of this utility model not only allows for simultaneous flaring of both ends of a stainless steel pipe, improving flaring efficiency, but also enables individual flaring of one end of the stainless steel pipe when the length of the pipe exceeds the distance between the two expanders. It can also flare irregularly shaped stainless steel pipes, thereby greatly improving overall flexibility and convenience. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the flared structure of the irregularly shaped stainless steel pipe according to this utility model.

[0014] Figure 2 This is a schematic diagram of the flared structure of a straight stainless steel pipe according to this utility model.

[0015] Figure 3 This is a schematic diagram of the partial explosion structure of this utility model.

[0016] Figure 4 This is a partially enlarged structural diagram of point A of this utility model.

[0017] In the picture:

[0018] 1. Workbench; 2. U-shaped bracket; 3. Electric push rod; 4. Pipe clamping block; 5. First step seat; 6. Second step seat; 7. Casters; 8. Tail seat; 9. End seat; 10. Hydraulic cylinder; 11. Support rod; 12. Connecting seat; 13. Buffer cap; 14. Electric rotary table; 15. Expanding head; 16. Universal flexible clamp; 17. Ring cavity; 18. Mounting cavity; 19. Rotating shaft; 20. Motor; 21. Control box. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for 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 the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] Example

[0023] Reference Figure 1-4A high-efficiency expansion machine for stainless steel pipes includes a workbench 1, wherein: a pipe extrusion holder is fixedly installed on the workbench 1 to fix the stainless steel pipe, ensuring the stability of the stainless steel pipe during the expansion process and preventing displacement of the stainless steel pipe; a first step seat 5 is rotatably installed on one side of the workbench 1, and a second step seat 6 is fixedly installed on the other side of the workbench 1; an expander is fixedly installed on the first step seat 5 and the second step seat 6 to support the expander, while providing rotation and movement space for an electric rotary table 14; a universal flexible clamp 16 is fixedly installed on the workbench 1 to fix stainless steel pipes of various specifications; the universal flexible clamp 16 is located below the pipe extrusion holder.

[0024] In this embodiment, the pipe extrusion and fixing device includes a U-shaped bracket 2, an electric push rod 3, and a pipe pressing block 4. One end of the U-shaped bracket 2 is fixedly connected to the rear side of the workbench 1, and the other end of the U-shaped bracket 2 is fixedly installed with the electric push rod 3 so as to ensure the stability of the electric push rod 3 and the pipe pressing block 4 through the U-shaped bracket 2. The electric push rod 3 is located above the workbench 1, and the output end of the electric push rod 3 is fixedly installed with the pipe pressing block 4 so as to drive the pipe pressing block 4 to fix the stainless steel pipe placed on the universal flexible clamp 16 through the electric push rod 3. The electric push rod 3 is coaxial with the universal flexible clamp 16, the pipe pressing block 4 is on the universal flexible clamp 16, and the pipe pressing block 4 is located in the opening of the U-shaped bracket 2.

[0025] In this embodiment, the expander includes a tailstock 8, an endstock 9, a hydraulic cylinder 10, an electric rotary table 14, and an expander head 15. The hydraulic cylinder 10 is fixedly mounted on the corresponding first step seat 5 and second step seat 6 via the tailstock 8 and the endstock 9, so as to support the hydraulic cylinder 10 and ensure its stability. The output end of the hydraulic cylinder 10 slides out from the endstock 9. The output end of the hydraulic cylinder 10 is fixedly connected to the electric rotary table 14 via a support bracket, so as to support the electric rotary table 14 and prevent the weight of the electric rotary table 14 from directly acting on the output end of the hydraulic cylinder 10. The output end of the electric rotary table 14 is detachably fixedly mounted with several expander heads 15 of different specifications in a circumferential array, so as to select the required expander head 15 to expand the diameter of the stainless steel pipe through the rotation of the electric rotary table 14. The support bracket and the endstock 9 are slidably connected, and the expander heads 15 all face one side of the worktable 1.

[0026] Hydraulic cylinder 10 is fixedly connected to an external hydraulic pump station.

[0027] In this embodiment, the support frame includes a support rod 11, a connecting seat 12, and a buffer cap 13. Two support rods 11 are provided, and one end of the two support rods 11 is fixedly connected through the connecting seat 12. The support rods 11 are slidably mounted on the end seat 9 so that they can move with the extension and retraction of the output end of the hydraulic cylinder 10 during the process of supporting the electric rotary table 14. Both ends of the support rods 11 protrude from the end seat 9, and the other end of the support rods 11 is fixedly mounted with a buffer cap 13. The buffer cap 13 can prevent the support rods 11 from separating from the end seat 9, and at the same time, it can provide cushioning when in contact with the end seat 9. One side of the connecting seat 12 is fixedly connected to the output end of the hydraulic cylinder 10, and the other side of the connecting seat 12 is fixedly connected to the electric rotary table 14.

[0028] In this embodiment, an annular cavity 17 is provided on the workbench 1 to provide rotation space for the first step seat 5. The annular cavity 17 divides the workbench 1 into two parts. An installation cavity 18 is provided at the center of the workbench 1 to provide the required installation space for the motor 20. The installation cavity 18 is located below the annular cavity 17 and is coaxially connected with the annular cavity 17. One end of the first step seat 5 is rotatably installed in the annular cavity 17.

[0029] In this embodiment, a driver is fixedly installed at one end of the first step seat 5. The driver includes a rotating shaft 19 and a motor 20. The rotating shaft 19 is fixedly installed above the first step seat 5, and the output end of the motor 20 is fixedly connected to the lower part of the first step seat 5 so that the first step seat 5 can be driven to rotate around the worktable 1 as an axis by the motor 20. The motor 20 is located below the rotating shaft 19, and the motor 20 and the rotating shaft 19 are coaxial. The motor 20 is coaxially fixedly installed in the mounting cavity 18, and the rotating shaft 19 is coaxially rotatably installed in the annular cavity 17 so as to ensure the stability and smoothness of the first step seat 5 during rotation by the rotating shaft 19.

[0030] In this embodiment, at least two casters 7 are installed below the end of the first step seat 5 and the second step seat 6 away from the workbench 1, so as to ensure that the first step seat 5 can rotate smoothly and that the first step seat 5 and the second step seat 6 are at the same height.

[0031] A control box 21 is fixedly installed on the outside of the U-shaped bracket 2. The controller inside the control box 21 is electrically connected to the electric push rod 3, the hydraulic cylinder 10, the electric rotary table 14, and the motor 20.

[0032] The controller uses existing technology, such as the PLC controller, so we will not go into too much detail about it here.

[0033] This utility model, specifically, is as follows: Figure 2As shown, when expanding the diameter of the two ends of a stainless steel pipe whose length is less than the distance between the two expanders, simply place the stainless steel pipe evenly on the universal flexible clamp 16, and use the electric push rod 3 to drive the pipe pressing block 4 to fix the stainless steel pipe placed on the universal flexible clamp 16.

[0034] Then, rotate the electric rotary table 14 so that the required expansion head 15 on the electric rotary table 14 is coaxially aligned with the port of the stainless steel pipe, and stop rotating. At this time, the hydraulic cylinder 10 drives the expansion head 15 into the port of the stainless steel pipe to expand the diameter.

[0035] like Figure 1 As shown, when expanding the diameter of both ends of a stainless steel pipe whose length is greater than the distance between the two expanders, the first step seat 5 is rotated by the motor 20, so that the expander on the first step seat 5 is offset from the expander on the second step seat 6. Then, the stainless steel pipe is placed on the universal flexible clamp 16, and one end of the stainless steel pipe is brought close to the expander on the second step seat 6. Then, the pipe clamping block 4 is driven by the electric push rod 3 to fix the stainless steel pipe placed on the universal flexible clamp 16. The diameter of one end of the stainless steel pipe can be expanded by the expander on the second step seat 6. After the diameter is expanded, the other end can be expanded in the same way.

[0036] like Figure 1 As shown, when it is necessary to expand the diameter of the biological port of an irregularly shaped stainless steel tube, such as a stainless steel tube with an angle of 0 to 90 degrees, it is only necessary to drive the first step seat 5 to rotate by the motor 20 according to the bending angle of the stainless steel tube, so that the angle between the expander on the first step seat 5 and the expander on the second step seat 6 matches the bending angle of the stainless steel tube. Finally, the diameter of the two ports can be expanded in the above manner.

[0037] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A high-efficiency expanding machine for stainless steel pipes, characterized in that: Includes a workbench (1), wherein: a pipe extrusion holder is fixedly installed on the workbench (1), a first step seat (5) is rotatably installed on one side of the workbench (1), a second step seat (6) is fixedly installed on the other side of the workbench (1), an expander is fixedly installed on the first step seat (5) and the second step seat (6), and a universal flexible clamp (16) is fixedly installed on the workbench (1), the universal flexible clamp (16) being located below the pipe extrusion holder.

2. The high-efficiency expanding machine for stainless steel pipes as described in claim 1, characterized in that: The pipe extrusion fixture includes a U-shaped bracket (2), an electric push rod (3), and a pipe pressing block (4). One end of the U-shaped bracket (2) is fixedly connected to the rear side of the workbench (1), and the other end of the U-shaped bracket (2) is fixedly installed with an electric push rod (3). The electric push rod (3) is located above the workbench (1), and the output end of the electric push rod (3) is fixedly installed with a pipe pressing block (4). The electric push rod (3) is coaxial with the universal flexible clamp (16), and the pipe pressing block (4) is located on the universal flexible clamp (16) and in the opening of the U-shaped bracket (2).

3. The high-efficiency expanding machine for stainless steel pipes as described in claim 1, characterized in that: The expander includes a tailstock (8), an endstock (9), a hydraulic cylinder (10), an electric rotary table (14), and an expander head (15). The hydraulic cylinder (10) is fixedly mounted on the corresponding first step seat (5) and second step seat (6) via the tailstock (8) and the endstock (9). The output end of the hydraulic cylinder (10) slides out from the endstock (9). The output end of the hydraulic cylinder (10) is fixedly connected to the electric rotary table (14) via a support bracket. The output end of the electric rotary table (14) is detachably fixedly mounted with several expander heads (15) of different specifications in a circumferential array. The support bracket is slidably connected to the endstock (9). All the expander heads (15) face one side of the worktable (1).

4. The high-efficiency expanding machine for stainless steel pipes as described in claim 3, characterized in that: The support frame includes a support rod (11), a connecting seat (12), and a buffer cap (13). Two support rods (11) are provided. One end of the two support rods (11) is fixedly connected by the connecting seat (12). The support rod (11) is slidably mounted on the end seat (9). Both ends of the support rod (11) protrude from the end seat (9). The other end of the support rod (11) is fixedly mounted with a buffer cap (13). One side of the connecting seat (12) is fixedly connected to the output end of the hydraulic cylinder (10), and the other side of the connecting seat (12) is fixedly connected to the electric rotary table (14).

5. A high-efficiency expanding machine for stainless steel pipes as described in claim 1, characterized in that: The workbench (1) has an annular cavity (17) that divides the workbench (1) into two parts. An installation cavity (18) is provided at the center of the workbench (1). The installation cavity (18) is located below the annular cavity (17) and is coaxially connected with the annular cavity (17). One end of the first step seat (5) is rotatably installed in the annular cavity (17).

6. The high-efficiency expanding machine for stainless steel pipes as described in claim 5, characterized in that: A driver is fixedly installed at one end of the first step seat (5). The driver includes a rotating shaft (19) and a motor (20). The rotating shaft (19) is fixedly installed above the first step seat (5). The output end of the motor (20) is fixedly connected to the lower part of the first step seat (5). The motor (20) is located below the rotating shaft (19). The motor (20) and the rotating shaft (19) are coaxial. The motor (20) is coaxially fixedly installed in the mounting cavity (18). The rotating shaft (19) is coaxially rotatably installed in the annular cavity (17).

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