Pipe expanding device

Abstract

The utility model discloses a pipe expanding device. The pipe expanding device comprises a rack, a hydraulic cylinder arranged on the rack, an expanding shaft and a pipe expanding die, the expanding shaft is in transmission connection with the hydraulic cylinder, the expanding shaft is of a structure with a small upper end and a large lower end, the pipe expanding die is composed of a plurality of extrusion parts, the extrusion parts are arranged on the periphery of the expanding shaft in a surrounding mode, the pipe expanding die is used for being sleeved with a pipe fitting, and the hydraulic cylinder drives the expanding shaft to move upwards. And the extrusion part expands to extrude the pipe fitting, so that pipe expanding machining is completed. The expanding shaft is in transmission connection with the hydraulic cylinder, the expanding shaft is of a structure with a small upper end and a large lower end, the pipe expanding die is composed of a plurality of extrusion parts, the extrusion parts are arranged on the periphery of the expanding shaft in a surrounding mode, the pipe expanding die is used for being sleeved with a pipe fitting, and the hydraulic cylinder drives the expanding shaft to move upwards so that the extrusion parts can expand and extrude the pipe fitting to complete pipe expanding machining. After the pipe fitting is sleeved on the pipe expanding mould, the pipe expanding processing of the pipe fitting can be automatically finished, the processing efficiency is high, the processing consistency is higher, and the labor intensity and the production cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe expansion, in particular to a pipe expansion device. Background Art

[0002] Existing pipe expansion work is mostly done manually. This processing method not only has low processing efficiency, high labor intensity and high processing cost, but also because it relies on manual operation, the sizes of the processed pipes are uneven, so it is difficult to ensure the processing quality, defective products are prone to occur, and the processing consistency is poor. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a pipe expansion device.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model provides a pipe expansion device, including: a frame, a hydraulic cylinder, an expansion shaft and a pipe expansion mold arranged on the frame, the expansion shaft is transmission-connected to the hydraulic cylinder, the expansion shaft is a structure with a small upper end and a large lower end, the pipe expansion mold is composed of a plurality of extrusion parts, and the plurality of extrusion parts are arranged around the outer circumference of the expansion shaft, the pipe expansion mold is used for sleeve installation of pipe fittings, and the hydraulic cylinder drives the expansion shaft upward to expand the extrusion parts to extrude the pipe fittings to complete the pipe expansion process.

[0006] In a specific embodiment, a support plate is further provided on the frame, and the support plate is sleeved on the outer circumference of the tube expansion mold.

[0007] In a specific embodiment, the support plate is connected to a lifting assembly, and the lifting assembly drives the support plate to rise and fall.

[0008] In a specific embodiment, a limiting assembly is further provided at the lower end of the tube expansion die, and the expansion shaft passes through the limiting assembly and is transmission-connected to the hydraulic cylinder.

[0009] In a specific embodiment, the extrusion member includes an extrusion end and a connection end, the connection end is located inside the limiting assembly, and the extrusion end extends out of the limiting assembly.

[0010] In a specific embodiment, the limiting assembly includes a mounting seat and a cover body, a mounting cavity for accommodating the connecting end is formed between the mounting seat and the cover body, and the extruding end extends out of the cover body.

[0011] In a specific embodiment, the cover body is provided with an opening for the extrusion end to extend out, and the tube expansion die is provided with an elastic ring at a position corresponding to the opening.

[0012] In a specific embodiment, a fixing seat is further provided between the hydraulic cylinder and the expansion shaft, a transmission end is provided at the lower end of the expansion shaft, and the piston rod of the hydraulic cylinder and the transmission end extend into the fixing seat.

[0013] In a specific embodiment, the fixing seat is composed of two arc-shaped structures.

[0014] In a specific embodiment, the lifting assembly is composed of a guide rod and a lifting cylinder, the guide rod is installed on the frame, the lifting cylinder is connected to the guide rod, and the support plate is transmission-connected to the lifting cylinder.

[0015] The tube expanding device of the utility model has the following beneficial effects compared with the prior art: the expansion shaft is transmission-connected to the hydraulic cylinder, the expansion shaft is a structure with a small upper end and a large lower end, the tube expanding die is composed of a plurality of extrusion parts, the plurality of extrusion parts are arranged around the outer circumference of the expansion shaft, the tube expanding die is used for sleeved pipe fittings, the hydraulic cylinder drives the expansion shaft upward so that the extrusion parts expand the extruded pipe fittings to complete the tube expanding process, that is, after the pipe fittings are sleeved on the tube expanding die, the tube expanding process of the pipe fittings can be automatically completed, the processing efficiency is high and the processing consistency is high, and the labor intensity and production cost are reduced.

[0016] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A three-dimensional schematic diagram of the pipe expansion device provided by the utility model Figure 1 ;

[0019] Figure 2 A cross-sectional schematic diagram of the pipe expansion device provided by the utility model;

[0020] Figure 3 A three-dimensional schematic diagram of the pipe expansion device provided by the utility model Figure 2 ;

[0021] Figure 4 A schematic diagram of the structure of the tube expansion die and the limiting assembly provided by the utility model;

[0022] Figure 5 The utility model is provided with a schematic diagram of the exploded view of the tube expansion die and the expansion shaft. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0030] See also Figures 1 to 5 The specific embodiment shown in the utility model discloses a pipe expansion device, comprising: a frame 10, a hydraulic cylinder 20, an expansion shaft 30 and a pipe expansion mold 40 arranged on the frame 10, the expansion shaft 30 is transmission-connected to the hydraulic cylinder 20, the expansion shaft 30 is a structure with a small upper end and a large lower end, the pipe expansion mold 40 is composed of a plurality of extrusion members 41, and the plurality of extrusion members 41 are arranged around the outer circumference of the expansion shaft 30, the pipe expansion mold 40 is used for sleeve pipe fittings, and the hydraulic cylinder 20 drives the expansion shaft 30 upward so that the extrusion members 41 expand and extrude the pipe fittings to complete the pipe expansion process.

[0031] Specifically, the expansion shaft 30 is a structure with a small upper end and a large lower end. The tube expansion mold 40 is composed of a plurality of extrusion parts 41. The plurality of extrusion parts 41 are arranged around the outer circumference of the expansion shaft 30. When the pipe fitting is sleeved on the tube expansion mold 40, the hydraulic cylinder 20 drives the expansion shaft 30 upward to make the extrusion parts 41 expand the inner wall of the extruded pipe fitting to complete the tube expansion process. The tube expansion device can automatically complete the tube expansion process of the pipe fitting without manual tube expansion. The processing efficiency is high and the processing consistency is high, which reduces labor intensity and production costs.

[0032] Specifically, when the pipe is expanded, the expansion shaft 30 moves upward, so that a plurality of extrusion pieces 41 expand the extruded pipe from different directions at the same time, so that the inner wall of the pipe is evenly stressed and the size parameters of the expanded pipe are more accurate.

[0033] Specifically, the pipe fitting is inserted into the pipe expansion mold 40 from top to bottom, and a highly wear-resistant material (for example, high manganese steel) is selected as the pipe expansion mold 40 to reduce wear and extend the service life. The size of the pipe expansion mold 40 can be freely adjusted to be suitable for pipe fittings of different sizes and diameters.

[0034] In one embodiment, a support plate 50 is further provided on the frame 10 , and the support plate 50 is sleeved on the outer circumference of the tube expansion mold 40 .

[0035] Specifically, a support plate 50 is provided on the frame 10 to support the pipe fittings.

[0036] In one embodiment, the support plate 50 is connected to a lifting assembly 60 , and the lifting assembly 60 drives the support plate 50 to rise and fall.

[0037] Specifically, the support plate 50 is square in shape, and its four corners are connected to the lifting assembly 60. When the pipe fitting completes the expansion process, the lifting assembly 60 drives the support plate 50 to rise, lifts the pipe fitting until it is pushed out of the processing port to realize unloading; when the pipe fitting after the expansion process is taken out, the lifting assembly 60 drives the support plate 50 to descend until it is restored to the initial position.

[0038] In one embodiment, the lifting assembly 60 is composed of a guide rod 61 and a lifting cylinder 62 , the guide rod 61 is installed on the frame 10 , the lifting cylinder 62 is connected to the guide rod 61 , and the support plate 50 is transmission-connected to the lifting cylinder 62 .

[0039] Specifically, the guide rod 61 is installed on the frame 10 to play a guiding role, and the lifting cylinder 62 drives the support plate 50 to move up and down when it works.

[0040] In one embodiment, a limiting assembly 70 is further provided at the lower end of the tube expansion die 40 , and the expansion shaft 30 passes through the limiting assembly 70 and is transmission-connected to the hydraulic cylinder 20 .

[0041] Specifically, a limit assembly 70 is provided to limit the expansion die 40, that is, the extrusion piece 41 will not fall off. The limit assembly 70 is fixed to the frame 10, and the expansion shaft 30 passes through the limit assembly 70 and is connected to the hydraulic cylinder 20. When the hydraulic cylinder 20 drives the expansion shaft 30 to rise and fall, the limit assembly 70 does not move.

[0042] In one embodiment, the extrusion member 41 includes an extrusion end 411 and a connection end 412 , wherein the connection end 412 is located inside the limiting assembly 70 , and the extrusion end 411 extends out of the limiting assembly 70 .

[0043] Specifically, the connection end 412 is located at the bottom of the extrusion end 411, and the connection end 412 is located inside the stop assembly 70, so that the plurality of extrusion pieces 41 surround the outer circumference of the expansion shaft 30 and will not fall off. In addition, the extrusion end 411 extends out of the stop assembly 70 to expand the pipe fitting.

[0044] Preferably, the extrusion end 411 and the connection end 412 are an integrally formed structure, which has high strength and only requires one set of production molds, thereby reducing production costs.

[0045] In one embodiment, the limiting assembly 70 includes a mounting seat 71 and a cover body 72 . A mounting cavity for accommodating the connecting end 412 is formed between the mounting seat 71 and the cover body 72 . The extruding end 411 extends out of the cover body 72 .

[0046] Specifically, the connection end 412 is located in the installation cavity, the mounting seat 71 and the cover body 72 are connected by screws or snaps so that the connection end 412 will not fall off from the installation cavity, and the extrusion end 411 extends out of the cover body 72 to facilitate the expansion of the pipe fitting.

[0047] In one embodiment, the cover body 72 is provided with an opening for the extrusion end 411 to extend out, and the tube expansion die 40 is provided with an elastic ring 80 at a position corresponding to the opening.

[0048] Specifically, the opening is a circular hole, which is convenient for the extrusion end 411 to extend out without getting stuck in the extrusion end 411. An elastic ring 80 is provided to seal and prevent the tube expansion mold 40 from getting stuck.

[0049] In one embodiment, a fixing seat 90 is further provided between the hydraulic cylinder 20 and the expansion shaft 30 , a transmission end 31 is provided at the lower end of the expansion shaft 30 , and the piston rod of the hydraulic cylinder 20 and the transmission end 31 extend into the fixing seat 90 .

[0050] Specifically, the piston rod and the transmission end 31 extend into the lower end and the upper end of the fixing seat 90 respectively, and the fixing seat 90 plays a guiding role so that the lifting and lowering of the expansion shaft 30 are always in the same vertical direction.

[0051] In one embodiment, the fixing seat 90 is composed of two arc-shaped structures so that the piston rod and the transmission end 31 can be placed therein, and the two arc-shaped structures are fixed by bolts. Preferably, a locking member 100 is further provided inside the frame 10, and the locking member 100 is located on the outer periphery of the fixing seat 90 to form a hoop structure with high connection strength.

[0052] In one embodiment, four supporting legs are connected to the bottom of the frame 10 to provide support.

[0053] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A pipe expansion device, characterized in that: include: A frame, a hydraulic cylinder, an expansion shaft and a tube expansion mold arranged on the frame, the expansion shaft is transmission-connected to the hydraulic cylinder, the expansion shaft is a structure with a small upper end and a large lower end, the tube expansion mold is composed of a plurality of extrusion parts, and the plurality of extrusion parts are arranged around the outer circumference of the expansion shaft, the tube expansion mold is used for sleeve installation of pipe fittings, and the hydraulic cylinder drives the expansion shaft upward to expand the extrusion parts to extrude the pipe fittings to complete the tube expansion process.

2. A pipe expansion device according to claim 1, characterized in that: The frame is also provided with a support plate, and the support plate is sleeved on the outer circumference of the pipe expansion mold.

3. A pipe expansion device according to claim 2, characterized in that: The support plate is connected with a lifting assembly, and the lifting assembly drives the support plate to move up and down.

4. A pipe expansion device according to claim 1, characterized in that: A limiting assembly is also provided at the lower end of the tube expansion die, and the expansion shaft passes through the limiting assembly and is transmission-connected to the hydraulic cylinder.

5. A pipe expansion device according to claim 4, characterized in that: The extrusion piece includes an extrusion end and a connection end, wherein the connection end is located inside the limiting assembly, and the extrusion end extends out of the limiting assembly.

6. A pipe expansion device according to claim 5, characterized in that: The limiting assembly includes a mounting seat and a cover body, a mounting cavity for accommodating the connecting end is formed between the mounting seat and the cover body, and the extruding end extends out of the cover body.

7. A pipe expansion device according to claim 6, characterized in that: The cover body is provided with an opening for the extrusion end to extend out, and the tube expansion die is sleeved with an elastic ring at a position corresponding to the opening.

8. A pipe expansion device according to claim 1, characterized in that: A fixing seat is further provided between the hydraulic cylinder and the expansion shaft, a transmission end is provided at the lower end of the expansion shaft, and the piston rod of the hydraulic cylinder and the transmission end extend into the fixing seat.

9. A pipe expansion device according to claim 8, characterized in that: The fixing seat is composed of two arc-shaped structures.

10. The pipe expansion device according to claim 3, characterized in that: The lifting assembly is composed of a guide rod and a lifting cylinder. The guide rod is installed on the frame, the lifting cylinder is connected to the guide rod, and the support plate is drivingly connected to the lifting cylinder.

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