Aluminum pipe reducing equipment

Abstract

The invention discloses aluminum pipe reducing equipment, and relates to the technical field of aluminum pipe forming, the aluminum pipe reducing equipment comprises a plurality of rolling wheels, the plurality of rolling wheels are arranged along an annular array, the wheel surfaces of the rolling wheels are provided with arc surfaces recessed inwards, the arc surfaces of the plurality of rolling wheels are mutually connected to define pipe passing channels, and the diameters of the pipe passing channels of all reducing units are sequentially decreased. Each rolling wheel can slide along the radial direction of the pipe passing channel; the pipe drawing device has the beneficial effects that the wheel faces of all the rolling wheels are matched to form a pipe passing channel for a pipe to pass through, and the drawing effect is achieved through matching of the rolling wheels; the rolling wheels can slide in the radial direction of the pipe passing channel, the rolling wheels are in mutual linkage so that the rolling wheels can slide synchronously to be folded or diffused, and when the rolling wheels are abraded and need to be replaced, the rolling wheels can be controlled to slide so that the rolling wheels can be diffused to the circumferential side, and therefore the rolling wheels can be conveniently disassembled, assembled and replaced. And after the rolling wheels are dismounted and replaced, the rolling wheels are controlled to be mutually folded to form a pipe passing channel, and maintenance is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum tube forming, and in particular to an aluminum tube diameter reducing device. Background Art

[0002] After the aluminum strip is formed into an aluminum tube, it needs to be drawn and reduced in diameter to make the aluminum tube meet production requirements. The rolling wheels of existing metal tube reduction devices are mostly fixed in one piece to prevent errors caused by loose rolling wheels. However, it is difficult to replace the rolling wheels after they are worn. In addition, the rolling wheels are directly in contact with the metal tube for a long time and are easily damaged. It is difficult to replace them, which causes great inconvenience to users. Summary of the invention

[0003] The purpose of the present invention is to provide an aluminum tube diameter reduction device to solve the problems raised in the above background technology.

[0004] The present invention is achieved through the following technical solutions: An aluminum tube diameter reduction device includes multiple stages of diameter reduction units arranged in sequence, each stage of the diameter reduction unit includes: A plurality of rolling wheels are arranged in a circular array, the wheel surfaces of the rolling wheels are provided with an inwardly concave arc surface, the arc surfaces of the plurality of rolling wheels are connected to each other to form a pipe passage, and the pipe passage is used for the processing pipe to pass through; An adjusting unit, on which the rolling wheels are rotatably arranged, and the adjusting unit is used to synchronously drive the rolling wheels to slide so as to control the rolling wheels to converge or spread relative to each other; The diameters of the tube passages of the diameter-reducing units at each level decrease in sequence.

[0005] As a further improvement of the present invention, it also includes a pipe channel, which is used for processing pipes to pass through. The inlet and outlet ends of the pipe channel are both provided with reduction units, and the tube channel of the reduction unit is coaxially arranged with the pipe channel.

[0006] As a further improvement of the present invention, the adjustment unit includes a hollow linkage chuck provided with movable claws, each rolling wheel can be rotatably set on the movable claws of the hollow linkage chuck, and the tube passage is coaxially arranged with the central channel of the hollow linkage chuck.

[0007] As a further improvement of the present invention, inclined surfaces are arranged on both sides of the arc surface of the rolling wheel surface, and the inclined surfaces of two adjacent rolling wheels are in close contact with each other.

[0008] As a further improvement of the present invention, it also includes a first diameter reduction device, which includes a diameter reduction plate, and the diameter reduction plate is provided with a diameter reduction hole, and the diameter reduction hole is coaxially arranged with the tube passage.

[0009] As a further improvement of the present invention, the first diameter reduction device comprises a diameter reduction box, and an installation groove for installing the diameter reduction plate is vertically arranged on the inner wall of the diameter reduction box.

[0010] As a further improvement of the present invention, a water spray unit with a water outlet is provided on one side of the diameter reduction box, the water spray unit is located on one side of the diameter reduction hole and the water outlet faces the diameter reduction hole. As a further improvement of the present invention, a diamond layer is provided on the diameter reduction hole.

[0011] Beneficial effects of the present invention: 1. In the present invention, the surfaces of the rolling wheels cooperate to form a pipe passage for the pipe fittings to pass through, and the pulling effect is achieved through the cooperation of the rolling wheels; and each rolling wheel can slide along the radial direction of the pipe passage, and the rolling wheels are linked to each other so that each rolling wheel can slide synchronously to be gathered or spread. When the rolling wheels are worn and need to be replaced, the rolling wheels can be controlled to slide so that the rolling wheels spread toward the circumference to facilitate the disassembly and replacement of the rolling wheels. After the disassembly and replacement of the rolling wheels are completed, the rolling wheels can be controlled to be gathered together to form the pipe passage, which is convenient for maintenance.

[0012] 2. In the present invention, the rolling wheels are linked to each other, that is, when one of the rolling wheels is controlled to slide, the other rolling wheels slide synchronously accordingly. After the rolling wheels are replaced, when the rolling wheels are controlled to retract, the rolling wheels move synchronously with the same movement distance, so that when one of the rolling wheels slides into place, the other rolling wheels are also in place, that is, at this time, a circular pipe passing channel is accurately formed between the arc surfaces of the rolling wheels, thereby preventing the pipe from being damaged during drawing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein: Figure 1 It is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the diameter reduction unit in an embodiment of the present invention; Figure 3 It is a schematic structural diagram of the first diameter reducing device in an embodiment of the present invention.

[0014] Numbers in the figure: reducing unit 1, rolling wheel 101, arc surface 102, hollow linkage chuck 103, movable claw 104, inclined slope 105, mounting seat 2, reducing plate 3, reducing hole 301, reducing box 302, mounting groove 303. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below based on the accompanying drawings and implementation examples.

[0016] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0017] refer to Figures 1 to 3 , the embodiments of the present invention disclose: An aluminum tube diameter reduction device comprises a multi-stage diameter reduction unit 1 arranged in sequence, each diameter reduction unit 1 comprises four rolling wheels 101, the four rolling wheels 101 are arranged in a ring array, the wheel surface of the rolling wheel 101 is provided with an inwardly concave arc surface 102, the arc surfaces 102 of a plurality of rolling wheels 101 are connected to each other to form a tube passage, the tube passage is used for processing pipe fittings to pass through, the tube passage diameter of each stage of the diameter reduction unit 1 decreases in sequence, each rolling wheel 101 can slide along the radial direction of the tube passage, each rolling wheel 101 is linked to each other so that each rolling wheel 101 slides synchronously to gather or spread; each of the rolling wheels 101 can slide along the radial direction of the tube passage, The tube-passing channel slides in the radial direction. When the rolling wheel 101 is worn and needs to be replaced, the rolling wheel 101 can be controlled to slide so that the rolling wheel 101 spreads toward the circumference, thereby increasing the spacing between the rolling wheels 101, so that the staff can put maintenance tools between the rolling wheels 101, thereby facilitating the staff to use maintenance tools to disassemble and replace the rolling wheels 101. After the disassembly and replacement of the rolling wheels 101 is completed, the rolling wheels 101 are controlled to retract to form a tube-passing channel. At the same time, after controlling a single rolling wheel 101 to spread toward the circumference and replace the rolling wheel 101, it is necessary to control the rolling wheel 101 to slide in the opposite direction. The circular arc surfaces 102 of the rolling wheels 101 are connected again to form a pipe-passing passage. However, at this time, the staff usually cannot accurately control the movement of the rolling wheels 101 into position; or in other words, after controlling the movement of one of the rolling wheels 101, the rolling wheel 101 is usually used as a reference. If the rolling wheel 101 slips too much or does not slip completely into position, the remaining rolling wheels 101 cannot be accurately reset accordingly, so that the circular arc surfaces 102 of the rolling wheels 101 cannot accurately form a circular pipe-passing passage, and the pipe fitting is squeezed into an irregular shape (not a full circle) when being drawn. pipe fittings, or cause damage to the pipe fittings during drawing, thereby reducing the product quality rate; based on this, in this embodiment, the various rolling wheels 101 are linked with each other, that is, when one of the rolling wheels 101 is controlled to slip, the remaining rolling wheels 101 slide synchronously accordingly, and after replacing the rolling wheels 101, when the rolling wheels 101 are controlled to retract, the various rolling wheels 101 move synchronously with the same movement distance, so that when one of the rolling wheels 101 slides into place, the remaining rolling wheels 101 are also in place, that is, at this time, a circular pipe passing channel is accurately formed between the arc surfaces 102 of each rolling wheel 101, thereby preventing the pipe fittings from being damaged during drawing.

[0018] In this embodiment, in order to realize the control of synchronous movement of each rolling wheel 101, the shrinking unit 1 in this embodiment also includes an adjusting unit, and the rolling wheel 101 is rotatably arranged on the adjusting unit, and the adjusting unit is used to synchronously drive each rolling wheel 101 to slide to control the rolling wheels 101 to converge or spread relative to each other; specifically, the adjusting unit is a hollow linkage chuck 103, and the hollow linkage chuck 103 includes a chuck body, a back pressure cover, a toothed disc assembly, a linkage bevel gear assembly, a linkage slider assembly and four movable claws 104; the chuck body has a central channel, and the four movable claws 104 are distributed at an angle of 90 degrees on the chuck body. And driven by the toothed disc assembly, each rolling wheel 101 can be rotatably arranged on the movable claw 104 of the chuck body, and the movable claw 104 is driven to drive each rolling wheel 101 to synchronously retract or spread. The tube passage is coaxially arranged with the central channel of the hollow linkage chuck 103, so that the pipe fitting can pass through the central channel of the hollow linkage chuck 103. At the same time, since the tube passage is coaxially arranged with the central channel of the hollow linkage chuck 103, the part of the pipe fitting that penetrates into the tube passage is also coaxially arranged with the part located in the central channel of the hollow linkage chuck 103, so as to avoid bending and deformation of the pipe fitting during the drawing process.

[0019] The existing pipe fittings are usually pulled by a pulling device at one end of the pipe fitting, and then pulled and reduced in diameter by a drawing device, and the pulling and reduction are formed in one time, which makes the pulling speed of the pipe fitting relatively slow during the single drawing process, and it is necessary to control the pulling device to pull the pipe fitting forward relatively slowly, so that each part of the pipe fitting can be gradually pulled and reduced in diameter to a predetermined size; if the pulling speed of the pulling device to pull the pipe fitting is increased at this time, it is easy to make the pipe fitting unable to be pulled and reduced in diameter to a predetermined size, or the pipe fitting may be broken due to stress, thereby affecting the product quality; based on this, in this embodiment, the reduction units 1 are arranged in sequence in a plurality of groups, and are divided into a plurality of stages of reduction units 1, and in this embodiment, a mounting seat 2 is also provided, and the mounting seat 2 is provided with The pipe channel is used for the pipe to be processed to pass through. The mounting seat 2 is provided with a reducing unit 1 at the inlet and outlet ends of the pipe channel. The pipe passage of the reducing unit 1 and the pipe passage are coaxially arranged. The pipe passes through the reducing unit 1 at the inlet and outlet ends of the pipe channel in sequence, and the diameters of the pipe passages of the reducing units 1 on both sides decrease in sequence, thereby achieving a step-by-step drawing effect, so that the pipe is gradually reduced to a required size after multiple drawing, so that even if the traction device increases the speed of traction of the pipe, the pipe can be gradually formed into a predetermined size through multiple drawing during the movement, while avoiding the phenomenon of pipe fracture under stress, thereby improving the production efficiency of the entire pipe production and forming process.

[0020] When controlling the rolling wheels 101 to converge to form a pipe-passing channel, even if the hollow linkage chuck 103 in the present embodiment is used, the rolling wheels 101 may fail to move into place or move excessively, thereby failing to form a circular pipe-passing channel, or causing the rolling wheels 101 to tilt against each other, thereby causing damage to the rolling wheels 101; based on this, in the present embodiment, the wheel surface of the rolling wheel 101 is provided with inclined surfaces 105 on both sides of the arc surface 102, and the two adjacent rolling wheels 101 are pressed against each other through the inclined surfaces 105, and in the present embodiment, the inclination angle of the inclined surfaces 105 is 45 degrees. When controlling the rolling wheels 101 to converge to each other, when the inclined surfaces 105 of the two adjacent rolling wheels 101 are pressed against each other, it can be determined that the rolling wheel 101 has slipped into place.

[0021] In addition, since the tube passage is formed by the rolling wheels 101, during the long-term drawing process of the tube fitting, the rolling wheels 101 are subjected to the force of the tube fitting, and each rolling wheel 101 may overcome the limitation of the hollow linkage chuck 103 and diffuse to the circumferential side for a certain distance, so that the actual forming diameter of the tube passage is still greater than the predetermined value that the tube fitting needs to be formed. Based on this, the present embodiment also includes a first diameter reduction device, which is located at the output end of the diameter reduction unit 1. The first diameter reduction device includes a diameter reduction plate 3, and the diameter reduction plate 3 is provided with a diameter reduction hole 301. The diameter reduction hole 301 is coaxially arranged with the tube passage, and the inner diameter of the diameter reduction hole 301 is equal to the outer diameter of the tube fitting that needs to be formed, and the diameter of the diameter reduction hole 301 is fixed. During the drawing and diameter reduction forming process of the tube fitting, the tube fitting is first reduced in diameter by the aforementioned diameter reduction unit 1, and then passes through the diameter reduction hole 301. If the aforementioned diameter reduction unit 1 is used for diameter reduction, the diameter reduction hole 301 is used for diameter reduction. If the rolling wheel 101 of the reduction unit 1 does not diffuse to the circumference for a certain distance (the last stage of the multi-stage reduction unit 1), the diameter of the pipe reduced by the reduction unit 1 is adapted to the reduction hole 301 and can pass through the reduction hole 301 normally; if the rolling wheel 101 of the reduction unit 1 diffuses to the circumference for a certain distance (the last stage of the multi-stage reduction unit 1), at this time, the reduction hole 301 will reduce the pipe again, so that the pipe is reduced and formed into the required size; specifically, in the present embodiment, the first reduction device includes a reduction box 302, and the inner wall of the reduction box 302 is vertically provided with an installation groove 303, and the two sides of the reduction plate 3 can slide into the installation groove 303 along a preset direction; after the reduction hole 301 is damaged, the reduction plate 3 can be controlled to slide out of the installation groove 303 in the direction opposite to the preset direction, and then a new reduction plate 3 can be replaced and installed, and maintenance and installation are convenient and simple.

[0022] After the pipe is reduced in diameter by drawing, due to the deformation caused by force and the friction between the pipe and the rolling wheel 101, a certain amount of heat is generated, which causes the pipe to heat up and affects the effect of the subsequent process. Therefore, in this embodiment, a water spray unit is provided on one side of the reduction box 302. The water spray unit has a water spray unit. The water spray unit is located on one side of the reduction hole 301 and the water outlet is facing the reduction hole 301. The water spray unit sprays water on the surface of the pipe to cool the pipe. In addition, in this embodiment, a diamond layer is provided on the reduction hole 301 and on the inner wall surface of the reduction hole 301. The diamond layer has wear-resistant and smooth properties to prevent the inner wall of the reduction hole 301 from being worn.

[0023] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned implementation cases, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned implementation cases, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation cases of the present invention.

Claims

1. An aluminum tube diameter reduction device, comprising a plurality of diameter reduction units (1) arranged in sequence, characterized in that: Each level of the reducing unit (1) comprises: A plurality of rolling wheels (101), the plurality of rolling wheels (101) being arranged in a ring array, the wheel surface of the rolling wheel (101) being provided with an inwardly concave arc surface (102), the arc surfaces (102) of the plurality of rolling wheels (101) being connected to each other to form a pipe passage, the pipe passage being used for allowing the processed pipe to pass through; An adjustment unit, on which the rolling wheels (101) are rotatably arranged, and the adjustment unit is used to synchronously drive the rolling wheels (101) to slide so as to control the rolling wheels (101) to converge or spread relative to each other; The diameters of the tube passages of each level of the diameter-reducing unit (1) decrease in sequence.

2. The aluminum tube diameter reduction device according to claim 1, characterized in that: It also comprises a pipe passage, which is used for processing pipes to pass through, and the inlet and outlet ends of the pipe passage are both provided with a reducing unit (1), and the pipe passage of the reducing unit (1) and the pipe passage are coaxially arranged.

3. The aluminum tube diameter reduction device according to claim 2, characterized in that: The adjustment unit comprises a hollow linkage chuck (103) provided with a movable claw (104), each rolling wheel (101) is rotatably arranged on the movable claw (104) of the hollow linkage chuck (103), and the tube passage is coaxially arranged with the central channel of the hollow linkage chuck (103).

4. The aluminum tube diameter reduction device according to claim 3, characterized in that: The wheel surface of the rolling wheel (101) is provided with inclined surfaces (105) on both sides of the arc surface (102), and the inclined surfaces (105) of two adjacent rolling wheels (101) are closely attached to each other.

5. The aluminum tube diameter reduction device according to claim 1, characterized in that: It also comprises a first diameter reducing device, which comprises a diameter reducing plate (3), the diameter reducing plate (3) is provided with a diameter reducing hole (301), and the diameter reducing hole (301) is arranged coaxially with the tube passage.

6. The aluminum tube diameter reduction device according to claim 5, characterized in that: The second diameter reducing device comprises a diameter reducing box (302), and an installation groove (303) for installing the diameter reducing plate (3) is vertically arranged on the inner wall of the diameter reducing box (302).

7. The aluminum tube diameter reduction device according to claim 6, characterized in that: A water spray unit having a water outlet is provided on one side of the diameter reduction box (302); the water spray unit is located on one side of the diameter reduction hole (301) and the water outlet faces the diameter reduction hole (301).

8. The aluminum tube diameter reduction device according to claim 7, characterized in that: A diamond layer is provided on the reduced diameter hole (301).

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