Bent pipe belt winding unit and belt winding method

Abstract

According to the bent pipe belt winding unit and the belt winding method, machines in the belt winding unit are arranged at intervals along the circumference, an annular workpiece 6 is arranged on the belt winding unit, the belt winding unit comprises a transmission unit and a working unit, and the annular workpiece 6 comprises at least two bent pipes 63 and connecting pieces; the at least two bent pipes 63 are connected through a connecting piece to form an annular structure without an opening; the transmission unit comprises a plurality of transmission mechanisms 1 arranged at intervals, the plurality of transmission mechanisms 1 cover 50% or more of a circle formed by arranging the tape winding unit, and each transmission mechanism 1 comprises a transverse roller 12 used for supporting the annular workpiece 6 and a vertical roller 13 abutting against and limiting an inner ring of the annular workpiece 6; and the working unit comprises a belt winding mechanism 4 and a pressing mechanism 2, and the pressing mechanism 2 is provided with a pressing roller 21 which makes contact with the bent pipe 63 and presses the bent pipe 63 downwards.

Description

Technical Field

[0001] The invention belongs to the field of pipeline processing, and in particular relates to a pipe bending tape wrapping unit and a tape wrapping method. Background Art

[0002] Some anti-corrosion elbows need to be wrapped with composite tape on the surface to form an anti-corrosion layer and increase service life.

[0003] In the early days, tape wrapping was done manually, but later a special pipe wrapping machine was developed to replace manual operation.

[0004] For pipe bending work, the prior art has the structure of CN202021973198.9. According to the bending shape of the pipe, an arc-shaped conveying roller is set in combination with a tape wrapping machine. Due to the bending structure of the pipe and the lack of limit stops, the force exerted on the pipe wall by the tape wrapping machine during the process of wrapping the pipe around the pipe causes the pipe to shake, affecting the effect and quality of the tape wrapping.

[0005] In response to the above problems, there is a solution of CN202410026831.X in the prior art, in which a stable guide rod is coaxially arranged according to the arc trajectory of the bent pipe conveying, and the bent pipe is driven to run by the dragging of the guide rod. At the same time, the shaking of the bent pipe is reduced by the restriction of the guide rod. However, it has a disadvantage that the guide rod is only fixed to the head end of the bent pipe and forms a limit, but the tail end of the bent pipe is not limited, so shaking will still occur, and as the wrapping machine approaches the tail end of the bent pipe, the tail end of the bent pipe without a limit will shake more. Summary of the invention

[0006] In order to solve the problem that the shaking of the bent pipe during the tape wrapping operation affects the tape wrapping quality, the present invention provides a bent pipe tape wrapping unit and a tape wrapping method.

[0007] The object of the present invention is achieved in the following manner: a pipe bending tape wrapping unit, in which the machines are arranged at intervals along the circumference, an annular workpiece 6 is arranged on the tape wrapping unit, and the tape wrapping unit includes a transmission unit and a working unit, wherein: The annular workpiece 6 includes at least two curved pipes 63 and a connecting piece, wherein at least two curved pipes 63 are connected by the connecting piece to form a closed annular structure; The transmission unit includes a plurality of transmission mechanisms 1 arranged at intervals, the plurality of transmission mechanisms 1 covering 50% or more of the circle formed by the arrangement of the belt wrapping units, the transmission mechanism 1 including a transverse roller 12 for supporting the annular workpiece 6, and a vertical roller 13 for abutting against and limiting the inner ring of the annular workpiece 6; The working unit includes a winding mechanism 4 and a pressing mechanism 2. The pressing mechanism 2 is provided with a pressing roller 21 which contacts with the bent pipe 63 and presses down.

[0008] Furthermore, the transmission mechanism 1 includes a frame 11, and the frame 11 includes an L-shaped upper frame 111 and a lower frame 112. The upper frame 111 and the lower frame 112 are slidably connected along the vertical direction. A lifting push rod 14 is arranged between the upper frame 111 and the lower frame 112. The top of the bottom edge of the L-shaped upper frame 111 is rotatably connected to the transverse roller 12 through an axle seat. The upper frame 111 is fixedly connected to the body of the driving motor 15, and the output end of the driving motor 15 is connected to the transverse roller 12. The top of the side edge of the L-shaped upper frame 111 is rotatably connected to the vertical roller 13 through an axle seat.

[0009] Furthermore, the bottom of the lower frame 112 is slidably connected to the slide rail 16, and one side of the lower frame 112 is connected to the positioning push rod 17. The positioning push rod 17 drives the lower frame 112 to slide on the slide rail 16, so that the transmission mechanism 1 is away from or close to the center of the circle formed by the arrangement of the winding machine group.

[0010] Furthermore, the working unit also includes an epoxy machine 3 and an outer wall heating machine 5. In the working unit, a pressing mechanism 2, an epoxy machine 3, a wrapping mechanism 4, and an outer wall heating machine 5 are sequentially arranged along the workpiece conveying direction.

[0011] Furthermore, the pressing mechanism 2 includes a frame body consisting of a cross beam 22 and legs fixedly connected to the ends of the cross beam 22, the bottom of the cross beam 22 is fixedly connected to a slide groove 23, the slide groove 23 is slidably connected to a slide rod 24, the bottom of the cross beam 22 is fixedly connected to the rod body of a pressing push rod 25, the output end of the pressing push rod 25 is fixedly connected to the slide rod 24, and the bottom of the slide rod 24 is rotatably connected to the pressure roller 21 through an axle seat.

[0012] Furthermore, the outer wall heating machine 5 includes a base 51, the top of the base 51 is fixedly connected to the rod body of the second lifting push rod 52, the output end of the second lifting push rod 52 is fixedly connected to the heating ring shell 53, and a heating element is arranged in the heating ring shell 53. The top of the base 51 is fixedly connected to the guide rod 54, and the guide rod 54 is slidably connected to the guide block 531, and the guide block 531 is fixedly connected to the heating ring shell 53. A universal wheel is arranged at the bottom of the base 51.

[0013] Furthermore, the connecting parts between the curved pipes 63 are double-headed chucks 61 and / or arc-shaped I-beams 62, and both ends of the arc-shaped I-beams 62 are respectively fixedly connected to mounting blocks 621, and the top of the mounting block 621 is fixedly connected to one end of a locking screw 622, and the other end of the locking screw 622 passes through the side wall of the curved pipe 63 and is fixed with a connecting nut.

[0014] A tape wrapping method including the above-mentioned pipe bending tape wrapping unit, the method comprising: S1, prepare the double-head chuck 61 and / or the arc-shaped I-beam 62 according to the radius and curvature of the curved pipe 63; S2, placing 2 to 4 bent pipes 63 on the tape wrapping unit in sequence, connecting the 2 to 4 bent pipes 63 through a double-head chuck 61 and / or an arc-shaped I-beam 62 to form a closed annular workpiece 6, so that the annular workpiece 6 is assembled on the tape wrapping unit; S3, adjusting the position of each transmission mechanism 1 on the slide rail 16 by the positioning push rod 17, so that the vertical roller 13 of each transmission mechanism 1 is tangent to the wall of the curved pipe 63 of the inner ring of the annular workpiece 6; S4, pressing the push rod 25 downward so that the pressing roller 21 is pressed downward and abuts against the top of the curved pipe 63; S5, move the outer wall heating machine 5, and adjust the height of the heating ring shell 53 by the second lifting push rod 52; S6, start the driving motor 15 of the transmission mechanism 1, drive the transverse roller 12, and simultaneously start the epoxy machine 3, the wrapping mechanism 4, and the outer wall heating machine 5 to wrap the bent pipe 63; S7. After the wrapping is completed, the double-head chuck 61 and / or the arc-shaped I-beam 62 are disassembled, and the bent pipe 63 is separated and taken out.

[0015] Compared with the prior art, the present invention connects multiple bent pipes to form a ring shape, and uses vertical rollers of multiple transmission mechanisms to abut the inner ring of the ring-shaped workpiece to form a horizontal limit, and uses a downward pressure mechanism to form a vertical limit, thereby reducing the shaking generated during the wrapping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of the circular arrangement of the tape wrapping units; Figure 2 It is a top view of the processing state of the tape wrapping machine; Figure 3 It is a structural diagram of the transmission mechanism; Figure 4 It is a structural schematic diagram of the pressing mechanism; Figure 5 It is a schematic diagram of the structure of the outer wall heating machine; Figure 6 It is a structural schematic diagram of a ring-shaped workpiece.

[0017] Among them, the transmission mechanism 1, the frame 11, the upper frame 111, the lower frame 112, the horizontal roller 12, the vertical roller 13, the lifting push rod 14, the driving motor 15, the slide rail 16, and the positioning push rod 17; Pressing mechanism 2, pressing roller 21, cross beam 22, slide trough 23, slide bar 24, pressing push rod 25; Epoxy machine 3, Belt wrapping mechanism 4, The outer wall heating machine 5, the base 51, the second lifting push rod 52, the heating ring shell 53, the guide block 531, and the guide rod 54; An annular workpiece 6 , a double-head chuck 61 , an arc-shaped I-beam 62 , a mounting block 621 , a locking screw 622 , and a bent pipe 63 . DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the present invention, unless otherwise clearly stipulated and limited, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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 limiting the present invention.

[0020] As attached Figure 1-2 As shown, a pipe bending tape wrapping unit, the machines in the tape wrapping unit are arranged at intervals along the circumference, an annular workpiece 6 is arranged on the tape wrapping unit, and the tape wrapping unit includes a transmission unit and a working unit, wherein: The annular workpiece 6 includes at least two curved pipes 63 and a connecting piece, wherein at least two curved pipes 63 are connected by the connecting piece to form a closed annular structure; The transmission unit includes a plurality of transmission mechanisms 1 arranged at intervals, and the plurality of transmission mechanisms 1 cover 50% or even more than 70% of the circle formed by the arrangement of the belting units, that is, as shown in the figure, more than ten transmission mechanisms 1 together occupy an angle of more than 180° of the circle, and the transmission mechanism 1 includes a transverse roller 12 for supporting the annular workpiece 6, and a vertical roller 13 abutting against and limiting the inner ring of the annular workpiece 6. In the entire annular structure, the length of the curved pipe 63 should account for more than 50% or even more than 70% of the total length of the annular workpiece 6, so that the vertical rollers 13 of the plurality of transmission mechanisms 1 can form a limit on the inner ring of the annular workpiece 6; The above “vertical roller 13 abutting against and limiting the inner ring of the annular workpiece 6 ” refers to the abutment between the vertical roller 13 and the outer wall of the curved pipe 63 .

[0021] The working unit includes a wrapping mechanism 4 and a pressing mechanism 2, wherein the pressing mechanism 2 is provided with a pressure roller 21 which contacts and presses down the bent pipe 63, wherein the wrapping mechanism 4 can be any wrapping mechanism in the prior art, preferably CN220198546U - a device for wrapping an outer anti-corrosion layer of a bent pipe.

[0022] Further, as attached Figure 3 As shown, the transmission mechanism 1 includes a frame 11, and the frame 11 includes an L-shaped upper frame 111 and a lower frame 112. The upper frame 111 and the lower frame 112 are slidably connected along the vertical direction. In detail, a slide rail is fixed on the top of the lower frame 112, and a slider matched with the slide rail is fixed on the bottom of the upper frame 111. A lifting push rod 14 is arranged between the upper frame 111 and the lower frame 112 to adjust the height of the upper frame 111. The top of the bottom edge of the L-shaped upper frame 111 is rotatably connected to the transverse roller 12 through an axle seat. The upper frame 111 is fixedly connected to the body of the driving motor 15, and the output end of the driving motor 15 is connected to a section of the transverse roller 12 extending from the axle seat through a coupling. The top of the side edge of the L-shaped upper frame 111 is rotatably connected to the vertical roller 13 through the axle seat, so that the transverse roller 12 and the vertical roller 13 also form an L-shaped support.

[0023] Furthermore, the bottom of the lower frame 112 is slidably connected to the slide rail 16, and the slide rail 16 is fixed to the ground or the bottom plate of the entire unit. A connecting block extends from one side of the lower frame 112, and the connecting block is fixedly connected to a hinge seat. The hinge seat is hinged to the output end of the positioning push rod 17, and the rod body of the positioning push rod 17 is hinged to the second group of hinge seats, and the second group of hinge seats is fixedly connected to the ground or the bottom plate of the entire unit. The telescopic direction of the positioning push rod 17 is parallel to the slide rail 16. The positioning push rod 17 drives the lower frame 112 to slide on the slide rail 16, so that the transmission mechanism 1 is away from or close to the center of the circle formed by the arrangement of the winding unit.

[0024] Furthermore, the working unit also includes an epoxy machine 3 and an outer wall heating machine 5. In the working unit, a pressing mechanism 2, an epoxy machine 3, a wrapping mechanism 4, and an outer wall heating machine 5 are sequentially arranged along the workpiece conveying direction. The purpose of this arrangement is that the pressing mechanism 2 is close to the wrapping mechanism 4 to provide a limit by pressing down. The epoxy machine 3 performs a preliminary spraying treatment on the surface of the pipe 63 to form an anti-corrosion layer, and then the wrapping mechanism 4 performs a wrapping treatment on the surface of the pipe 63, and then the composite tape is heated and heat-shrunk and solidified by the outer wall heating machine 5.

[0025] Further, as attached Figure 4As shown, the pressing mechanism 2 includes a frame body consisting of a cross beam 22 and legs fixedly connected to the ends of the cross beam 22. Preferably, legs are fixed at both ends of the cross beam 22 to form a door-type frame. The bottom of the cross beam 22 is fixedly connected to a slide groove 23, and the slide groove 23 is slidably connected to a slide rod 24. The slide grooves 23 are preferably two vertically parallel pieces, and a horizontal slide rod 24 is slidably connected between the two slide grooves 23. The bottom of the cross beam 22 is fixedly connected to the rod body of a pressing push rod 25, and the output end of the pressing push rod 25 is fixedly connected to the slide rod 24. The bottom of the slide rod 24 is rotatably connected to the pressure roller 21 through an axle seat.

[0026] Further, as attached Figure 5 As shown, the outer wall heating machine 5 includes a base 51, the top of the base 51 is fixedly connected to the rod body of the second lifting push rod 52, the output end of the second lifting push rod 52 is fixedly connected to the heating ring shell 53, the heating ring shell 53 is annular, and a heating element is arranged inside the middle of the annular ring for the pipeline 63 to pass through. The heating element can be a surrounding heating wire. The top of the base 51 is fixedly connected to the guide rod 54, and the guide rod 54 is slidably connected to the guide block 531. The guide block 531 is fixedly connected to the heating ring shell 53, and a universal wheel is arranged at the bottom of the base 51 for easy transportation and movement.

[0027] The bottom of the winding mechanism 4 can also be slidably connected to the slide rail 16, and the slide rail 16 is fixed to the ground or the bottom plate of the entire unit. A connecting block extends from one side of the bottom of the winding mechanism 4, and a hinge seat is fixedly connected to the connecting block. The hinge seat is hinged to the output end of the positioning push rod 17, and the rod body of the positioning push rod 17 is hinged to the second group of hinge seats. The second group of hinge seats are fixedly connected to the ground or the bottom plate of the entire unit. The telescopic direction of the positioning push rod 17 is parallel to the slide rail 16. The positioning push rod 17 drives the lower frame 112 to slide on the slide rail 16, so that the winding mechanism 4 is away from or close to the center of the circle formed by the arrangement of the winding unit, which is used to adjust the position of the winding mechanism 4.

[0028] A set of transmission mechanisms 1 can be respectively arranged on the front and rear sides of the winding mechanism 4 along the feeding direction to provide reliable support and limit.

[0029] Further, as attached Figure 2 , 6As shown, the connecting parts between the bent pipes 63 are double-headed chucks 61 and / or arc-shaped I-beams 62. The double-headed chuck 61 is a prior art, and is disc-shaped in the middle, with three or more supporting claws on both sides that can be propped up outward. It is generally used to connect the ends of two pipes during pipeline processing. However, as shown in the figure, after the three 90° bent pipes 63 are connected by the double-headed chuck 61, the remaining part is less than 90°, that is, it is difficult to connect four 90° bent pipes 63. Therefore, a complementary arc-shaped I-beam 62 is provided. The arc-shaped I-beam 62 preferably has a radius equal to the bent pipe 63. Both ends of the arc-shaped I-beam 62 are respectively fixedly connected to mounting blocks 621. The top of the mounting block 621 is fixedly connected to one end of a locking screw 622. The other end of the locking screw 622 passes through the side wall of the bent pipe 63 and is fixed to a connecting nut to form a closed annular workpiece 6.

[0030] A tape wrapping method including the above-mentioned pipe bending tape wrapping unit, the method comprising: S1, prepare the double-head chuck 61 and / or the arc-shaped I-beam 62 according to the radius and curvature of the curved pipe 63; S2, placing 2 to 4 bent pipes 63 on the tape wrapping unit in sequence, connecting the 2 to 4 bent pipes 63 through a double-head chuck 61 and / or an arc-shaped I-beam 62 to form a closed annular workpiece 6, so that the annular workpiece 6 is assembled on the tape wrapping unit; S3, adjusting the position of each transmission mechanism 1 on the slide rail 16 by the positioning push rod 17, so that the circumference of the vertical roller 13 of each transmission mechanism 1 is tangent to the wall of the curved pipe 63 of the inner ring of the annular workpiece 6; S4, pressing the push rod 25 downward so that the pressing roller 21 is pressed downward and abuts against the top of the curved pipe 63; S5, move the outer wall heating machine 5, and adjust the height of the heating ring shell 53 by the second lifting push rod 52; S6, start the driving motor 15 of the transmission mechanism 1, drive the transverse roller 12, and simultaneously start the epoxy machine 3, the wrapping mechanism 4, and the outer wall heating machine 5 to wrap the bent pipe 63; S7. After the wrapping is completed, the double-head chuck 61 and / or the arc-shaped I-beam 62 are disassembled, and the bent pipe 63 is separated and taken out.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several changes and improvements can be made without departing from the overall concept of the present invention, which should also be regarded as the scope of protection of the present invention.

Claims

1. A pipe bending and taping machine unit, characterized in that: The machines in the belt wrapping unit are arranged at intervals along the circumference, and an annular workpiece (6) is arranged on the belt wrapping unit. The belt wrapping unit includes a transmission unit and a working unit, wherein: The annular workpiece (6) comprises at least two curved pipes (63) and a connecting piece, wherein the at least two curved pipes (63) are connected by the connecting piece to form a closed annular structure; A transmission unit, comprising a plurality of transmission mechanisms (1) arranged at intervals, the plurality of transmission mechanisms (1) covering 50% or more of a circle formed by the arrangement of the belt wrapping units, the transmission mechanism (1) comprising a transverse roller (12) for supporting an annular workpiece (6), and a vertical roller (13) for abutting against and limiting the inner ring of the annular workpiece (6); The working unit comprises a belt wrapping mechanism (4) and a pressing mechanism (2), wherein the pressing mechanism (2) is provided with a pressing roller (21) which contacts and presses down the bent pipe (63).

2. A pipe bending and taping machine as claimed in claim 1, characterized in that: The transmission mechanism (1) comprises a frame (11), the frame (11) comprising an L-shaped upper frame (111) and a lower frame (112), the upper frame (111) and the lower frame (112) being slidably connected in a vertical direction, a lifting push rod (14) being arranged between the upper frame (111) and the lower frame (112), the top of the bottom edge of the L-shaped upper frame (111) being rotatably connected to a transverse roller (12) via an axle seat, a body of a driving motor (15) being fixedly connected to the upper frame (111), an output end of the driving motor (15) being connected to the transverse roller (12), and the top of the side edge of the L-shaped upper frame (111) being rotatably connected to a vertical roller (13) via an axle seat.

3. A pipe bending and taping machine as claimed in claim 2, characterized in that: The bottom of the lower frame (112) is slidably connected to the slide rail (16), and one side of the lower frame (112) is connected to a positioning push rod (17). The positioning push rod (17) drives the lower frame (112) to slide on the slide rail (16), so that the transmission mechanism (1) moves away from or close to the center of the circle formed by the arrangement of the tape wrapping units.

4. A pipe bending and taping machine as claimed in claim 1, characterized in that: The working unit also includes an epoxy machine (3) and an outer wall heating machine (5). In the working unit, a pressing mechanism (2), an epoxy machine (3), a belt wrapping mechanism (4), and an outer wall heating machine (5) are sequentially arranged along the workpiece conveying direction.

5. A pipe bending and taping machine as claimed in claim 4, characterized in that: The pressing mechanism (2) comprises a frame body consisting of a crossbeam (22) and legs fixedly connected to the ends of the crossbeam (22); the bottom of the crossbeam (22) is fixedly connected to a slide groove (23); the slide groove (23) is slidably connected to a slide rod (24); the bottom of the crossbeam (22) is fixedly connected to a rod body of a pressing push rod (25); the output end of the pressing push rod (25) is fixedly connected to the slide rod (24); and the bottom of the slide rod (24) is rotatably connected to a pressing roller (21) via an axle seat.

6. A pipe bending and taping machine as claimed in claim 4, characterized in that: The outer wall heating machine (5) comprises a base (51), the top of the base (51) is fixedly connected to the rod body of the second lifting push rod (52), the output end of the second lifting push rod (52) is fixedly connected to the heating ring shell (53), a heating element is arranged inside the heating ring shell (53), the top of the base (51) is fixedly connected to the guide rod (54), the guide rod (54) is slidably connected to the guide block (531), the guide block (531) is fixedly connected to the heating ring shell (53), and a universal wheel is arranged at the bottom of the base (51).

7. A pipe bending and taping machine as claimed in claim 1, characterized in that: The connecting piece between the curved pipes (63) is a double-headed chuck (61) and / or an arc-shaped I-beam (62). Both ends of the arc-shaped I-beam (62) are respectively fixedly connected to the mounting blocks (621). The top of the mounting block (621) is fixedly connected to one end of a locking screw (622). The other end of the locking screw (622) passes through the side wall of the curved pipe (63) and is fixedly connected to a connecting nut.

8. A method for wrapping a pipe using the pipe wrapping machine as claimed in any one of claims 1 to 7, characterized in that: The method is: S1. Prepare a double-head chuck (61) and / or an arc-shaped I-beam (62) according to the radius and curvature of the bent pipe (63); S2, placing 2 to 4 bent pipes (63) on the tape wrapping machine in sequence, connecting the 2 to 4 bent pipes (63) by means of a double-head chuck (61) and / or an arc-shaped I-beam (62) to form a closed annular workpiece (6), and assembling the annular workpiece (6) on the tape wrapping machine; S3, adjusting the position of each transmission mechanism (1) on the slide rail (16) by means of a positioning push rod (17) so that the vertical roller (13) of each transmission mechanism (1) is tangent to the wall of the curved tube (63) of the inner ring of the annular workpiece (6); S4, pressing the push rod (25) downward so that the pressure roller (21) is pressed downward and abuts against the top of the curved pipe (63); S5, moving the outer wall heating machine (5), and adjusting the height of the heating ring shell (53) by means of the second lifting push rod (52); S6, starting the driving motor (15) of the transmission mechanism (1) to drive the transverse roller (12), and at the same time starting the epoxy machine (3), the wrapping mechanism (4), and the outer wall heating machine (5) to wrap the bent pipe (63); S7. After the wrapping is completed, the double-head chuck (61) and / or the arc-shaped I-beam (62) are disassembled, and the bent pipe (63) is separated and taken out.

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