Positioning rolling device for square tube forming

Abstract

The utility model relates to a positioning and rolling device for square tube forming, which comprises an inclined seat inclining 45 degrees relative to the horizontal plane, two driving extrusion wheels and two driven extrusion wheels are arranged on the inclined seat, the axial direction of the two driving extrusion wheels is parallel to the inclined direction of the inclined seat, and the axial direction of the two driving extrusion wheels is perpendicular to the axial direction of the two driven extrusion wheels. The opposite wheel faces of the two driving extrusion wheels and the opposite wheel faces of the two driven extrusion wheels define a square gap with the vertex angle at the top, and a straight pipe penetrates through the square gap to form a square straight pipe with the right angle at the top. The bottom of the driving extrusion wheel and the bottom of the driven extrusion wheel for rolling a straight pipe are obliquely arranged, so that the extrusion wheels originally in the horizontal axial direction and the vertical axial direction incline by 45 degrees along with the inclined seat, a right angle is adjusted to the top, and in the process that the straight pipe is rolled into a square pipe, it can be accurately guaranteed that a welding seam at the top is located on the right-angle side of the top; the overall change is small, and the accurate effect can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of welded pipe production equipment, in particular to a positioning rolling device for forming square pipes. Background Art

[0002] After the strip steel is curled into a tube, the joint seam at the top of the straight tube is welded to form a closed welded tube. At this time, the cross-section of the welded tube is circular. If you want to process it into a square tube, you need to roll it plastically. In the process of converting the circular tube into a square tube, the welds along the axial direction at different positions will affect the quality of the square tube. The welds are prone to cracking on the four planes of the square tube, affecting the stress. It is best to adjust the weld to a right-angled side of the square tube, which is easy to hide and minimizes the impact on strength. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a positioning rolling device for forming a square tube, so as to solve the problem of converting the top weld into a right-angled side during the process of converting a round tube into a square tube.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A positioning rolling device for forming square tubes comprises an inclined seat inclined at 45 degrees to the horizontal plane, two active extrusion wheels opposing each other vertically and two passive extrusion wheels opposing each other left and right are arranged on the top inclined surface of the inclined seat, the axial directions of the two active extrusion wheels are parallel to the inclined direction of the inclined seat, the axial directions of the two active extrusion wheels are perpendicular to the axial directions of the two passive extrusion wheels, the relative wheel surfaces of the two active extrusion wheels and the relative wheel surfaces of the two passive extrusion wheels form a square gap with the top angle at the top, after the straight tube passes through the square gap and is squeezed and flattened by the two active extrusion wheels and the two passive extrusion wheels, the circular straight tube becomes a square straight tube with the right angle at the top.

[0006] As a preferred embodiment, a rotating motor, a synchronous gear box and two separated support frames are sequentially arranged on the top surface of the tilting seat along the tilting direction from top to bottom, and the two ends of the two central axes parallel to each other in the tilting direction are rotatably arranged on the two support frames respectively, and two active extrusion wheels are relatively sleeved along the two central axes, and the shaft seats of the two driven extrusion wheels are arranged on the bottom of the support frames. Two rotating shafts facing each other are arranged between the synchronous gear box and the two support frames, and one end of the two rotating shafts is connected to the two central axes respectively. The two rotating shafts achieve synchronous rotation through mutually meshing gears in the synchronous gear box, and the rotating motor drives the gears in the synchronous gear box to rotate.

[0007] As a preferred embodiment, the bottom of the two support frames, the rotating motor and the synchronous gear box are arranged on the top of the tilting seat for sliding along the tilting direction, and a second translation motor is fixed in the middle of the top of the tilting seat. The second translation motor drives the two support frames to move upward or downward along the tilting direction of the tilting seat through a screw.

[0008] As a preferred embodiment, the bottom of the tilting seat can be horizontally slidably set on the base, and the horizontal sliding direction of the tilting seat is perpendicular to the axial direction of the straight tube. The base is provided with a first translation motor at one end of the sliding direction, and the first translation motor is transmission-connected to one end of the horizontal screw rod. The other end of the horizontal screw rod is rotatably fixed on the tilting seat, and the horizontal screw rod is driven by the first translation motor to push the tilting seat to move in the horizontal direction.

[0009] As a preferred embodiment, both ends of the two rotating shafts are connected by a universal joint.

[0010] The beneficial effect of the present invention is that the bottoms of the active extrusion wheel and the driven extrusion wheel for rolling straight tubes are tilted, so that the extrusion wheels originally on the horizontal axis and the vertical axis are tilted 45 degrees with the tilting seat, and a right angle is adjusted to the top. In this way, in the process of rolling the straight tube into a square tube, the top weld can be more accurately guaranteed to be on the top right-angled edge, so that the overall change is small and a more precise effect can be achieved. In addition, the active extrusion wheel and the driven extrusion wheel can slide along the tilting direction on the top of the tilting seat, and the tilting seat can slide in the horizontal direction on the base, which is convenient for adjusting the position of the active extrusion wheel and the driven extrusion wheel to penetrate the straight tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 1 Explanation of the reference numerals in the accompanying drawings: 1. Base; 2. Tilt seat; 3. First translation motor; 31. Horizontal screw; 4. Rotation motor; 5. Synchronous gear box; 6. Rotation shaft; 7. Active extrusion wheel; 71. Center shaft; 8. Driven extrusion wheel; 9. Support frame; 10. Stabilizer bar; 11. Straight tube; 12. Second translation motor. DETAILED DESCRIPTION

[0014] The specific implementation scheme of the present utility model is described in detail below with reference to the accompanying drawings.

[0015] like Figure 1The square tube forming positioning rolling device shown in the figure has two active extrusion wheels 7 and two driven extrusion wheels 8 arranged opposite to each other along the four sides of the straight tube 11. The two ends of the central axis 71 of the two active extrusion wheels 7 are rotatably arranged on the support frame 9. The central axis 71 of the two active extrusion wheels 7 is perpendicular to the axial direction of the two driven extrusion wheels 8. The axial direction of the two active extrusion wheels 7 is inclined 45 degrees clockwise along the horizontal plane, and the axial direction of the two driven extrusion wheels 8 is inclined 45 degrees counterclockwise along the horizontal plane.

[0016] Specifically, the top surface of the tilting seat 2 is tilted 45 degrees along the horizontal plane, and the central axis 71 of the two active extrusion wheels 7 is consistent with the tilting direction and angle of the top surface of the tilting seat 2. The two sides of the central axis 71 of the two active extrusion wheels 7 are rotatably arranged on the support frames 9 on both sides. The tops of the two support frames 9 are connected by a stabilizing bar 10, so that the relative distance between the support frames 9 is stable and accurate. Two rotating shafts 6 are arranged on the tilting seat 2 in parallel along the tilting direction. The two rotating shafts 6 are opposite to each other up and down. One end of the two rotating shafts 6 is arranged in a synchronous gear box 5 for synchronous rotation through gear meshing. One end of the output shaft of the rotating motor 4 is coaxially connected to one of the rotating shafts 6 in the synchronous gear box 5, and the other end of the two rotating shafts 6 is coaxial with the central axis 7 of the two active extrusion wheels 7. 1 are connected for synchronous rotation, the rotating motor 4 drives the two rotating shafts 6 to rotate synchronously, and the two rotating shafts 6 drive the two coaxially connected central shafts 71 to rotate, and the two active extrusion wheels 7 on the central shaft 71 roll on the two opposite side surfaces of the straight rod 11. In the process of rolling and pushing the straight rod 11 for transportation, the opposite side surfaces of the straight rod 11 are also shaped at the same time, and under the rolling of the two driven extrusion wheels 8 on the other opposite side of the straight rod 11, a square tube with a square cross-section is formed. Because the two active extrusion wheels 7 and the two driven extrusion wheels 8 are axially inclined, a right-angled side of the extruded square tube is at the top. Since the weld of the straight tube 11 is at the top, the weld of the formed square tube is at the right-angled side position at the top, which is convenient for hiding the position of the weld and increasing the overall strength and appearance.

[0017] Furthermore, the bottoms of the two support frames 9, the rotary motor 4, and the bottoms of the synchronous gearbox 5 are arranged on the top of the tilting seat 2 so as to slide along the tilting direction of the tilting seat 2. A second translation motor 12 is fixed in the middle of the top of the tilting seat 2. The upper ends of the bottoms of the two support frames 9 are provided with screws that tilt along the top of the tilting seat 2. The second translation motor 12 drives the two support frames 9 to move upward or downward along the tilting direction of the tilting seat 2 through the screws. In this way, the positions of the two active extrusion wheels 7 and the two driven extrusion wheels 8 on the top of the tilting seat 2 can be adjusted.

[0018] Furthermore, the bottom of the tilting seat 2 is horizontally slidably mounted on the base 1. The horizontal sliding direction of the tilting seat 2 is perpendicular to the axial direction of the straight tube 11. A first translation motor 3 is provided at one end of the base 1 in the sliding direction. The first translation motor 3 is drivingly connected to one end of a horizontal screw 31. The other end of the horizontal screw 31 is rotatably fixed to the tilting seat 2. Driven by the first translation motor 3, the horizontal screw 31 pushes the tilting seat 2 to move horizontally. In this way, the horizontal position of the tilting seat 2 can be adjusted, and the horizontal positions of the two active extrusion wheels 7 and the two driven extrusion wheels 8 are also adjusted, facilitating the passage of the straight tube 11.

[0019] The working process of this utility model is as follows:

[0020] As shown in Figure 1, the straight tube 11 transported horizontally axially penetrates into the square gap between the two active extrusion wheels 7 and the two driven extrusion wheels 8. After being extruded and transported by the two active extrusion wheels 7 and the two driven extrusion wheels 8, the outline of the straight tube 11 becomes a square, and the top of the straight tube 11 is a right-angled side of the square.

[0021] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some embodiments of its application, and are not intended to limit the present invention. It should be noted that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A positioning rolling device for forming a square tube, characterized in that: The invention comprises an inclined seat (2) inclined at 45 degrees to a horizontal plane, and two active extrusion wheels (7) and two passive extrusion wheels (8) are arranged on the top inclined surface of the inclined seat (2). The axial directions of the two active extrusion wheels (7) are parallel to the inclined direction of the inclined seat (2), and the axial directions of the two active extrusion wheels (7) are perpendicular to the axial directions of the two passive extrusion wheels (8). The relative wheel surfaces of the two active extrusion wheels (7) and the relative wheel surfaces of the two passive extrusion wheels (8) form a square gap with a top angle at the top. After the straight tube (11) passes through the square gap and is squeezed and flattened by the two active extrusion wheels (7) and the two passive extrusion wheels (8), the circular straight tube (11) becomes a square straight tube with a right angle at the top.

2. The positioning rolling device for forming a square tube according to claim 1, characterized in that: A rotating motor (4), a synchronous gear box (5) and two separated support frames (9) are sequentially arranged on the top surface of the tilting seat (2) along the tilting direction from top to bottom. The two ends of the two central shafts (71) parallel to each other in the tilting direction are rotatably arranged on the two support frames (9), and two active extrusion wheels (7) are relatively sleeved on the two central shafts (71). The shaft seats of the two driven extrusion wheels (8) are arranged on the bottom of the support frame (9). Two rotating shafts (6) facing each other are arranged between the synchronous gear box (5) and the two support frames (9). One end of the two rotating shafts (6) is connected to the two central shafts (71) respectively. The two rotating shafts (6) are synchronously rotated by the gears meshing with each other in the synchronous gear box (5). The rotating motor (4) drives the gears in the synchronous gear box (5) to rotate.

3. The positioning rolling device for forming a square tube according to claim 2, characterized in that: The bottoms of the two support frames (9), the rotary motor (4) and the synchronous gear box (5) are arranged on the top of the tilting seat (2) so as to slide along the tilting direction. A second translation motor (12) is fixed in the middle of the top of the tilting seat (2). The second translation motor (12) drives the two support frames (9) to move upward or downward along the tilting direction of the tilting seat (2) through a screw.

4. The positioning rolling device for forming a square tube according to claim 2, characterized in that: The bottom of the tilting seat (2) is horizontally slidably arranged on the base (1), and the horizontal sliding direction of the tilting seat (2) is perpendicular to the axial direction of the straight tube (11). A first translation motor (3) is provided at one end of the base (1) in the sliding direction. The first translation motor (3) is transmission-connected to one end of a horizontal screw rod (31), and the other end of the horizontal screw rod (31) is rotatably fixed on the tilting seat (2). The horizontal screw rod (31) is driven by the first translation motor (3) to push the tilting seat (2) to move in the horizontal direction.

5. The positioning rolling device for forming a square tube according to claim 2, characterized in that: Both ends of the two rotating shafts (6) are connected via a universal joint.

Images