Bent pipe tape winding unit

Abstract

According to the pipe bending and belt winding unit, 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, the annular workpiece 6 comprises at least two bent pipes 63 and connecting pieces, and the at least two bent pipes 63 are connected through the connecting pieces to form a non-open annular structure; 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] This utility model belongs to the field of pipe processing, specifically relating to a pipe bending and wrapping unit. Background Technology

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

[0003] In the early days, tape wrapping was done manually, but later, a tape wrapping machine specifically designed for pipelines was developed to replace manual operation.

[0004] For the wrapping of bent pipes, the existing technology includes the structure described in CN202021973198.9. This technology, combined with a wrapping machine, uses an arc-shaped arrangement of conveyor rollers to address the bending shape of the pipe. However, due to the curved structure of the bent pipe and the lack of limiting mechanisms, the force applied to the pipe wall during the wrapping process causes the pipe to sway, affecting the wrapping effect and quality.

[0005] To address the aforementioned issues, the existing technology includes a solution described in CN202410026831.X, which involves coaxially setting a stable guide rod based on the arc-shaped trajectory of the bent pipe conveyor. The guide rod drives the bent pipe to move and also serves to limit the swaying of the bent pipe. However, its drawback is 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 and will still sway. Moreover, as the winding machine works closer to the tail end of the bent pipe, the swaying of the tail end of the bent pipe without a limit increases. Utility Model Content

[0006] To address the problem of pipe swaying affecting tape winding quality during tape winding, this utility model provides a pipe bending tape winding unit.

[0007] The purpose of this utility model is achieved in the following manner: a pipe bending and wrapping machine unit, wherein the machines in the wrapping machine unit are arranged at intervals along the circumference, and an annular workpiece 6 is provided on the wrapping machine unit, the wrapping machine unit includes a transmission unit and a working unit, wherein:

[0008] The annular workpiece 6 includes at least two bent pipes 63 and a connector, wherein the at least two bent pipes 63 are connected by the connector to form a closed annular structure.

[0009] 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 winding unit. The transmission mechanism 1 includes a horizontal 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.

[0010] The working unit includes a winding mechanism 4 and a pressing mechanism 2. The pressing mechanism 2 is equipped with a pressure roller 21 that contacts and presses down on the bent tube 63.

[0011] Furthermore, the transmission mechanism 1 includes a frame 11, which includes an L-shaped upper frame 111 and a lower frame 112. The upper frame 111 and the lower frame 112 are slidably connected in the vertical direction. A lifting push rod 14 is provided between the upper frame 111 and the lower frame 112. The bottom edge and top of the L-shaped upper frame 111 are rotatably connected to a horizontal roller 12 through a bearing seat. The body of the drive motor 15 is fixedly connected to the upper frame 111. The output end of the drive motor 15 is connected to the horizontal roller 12. The side edge and top of the L-shaped upper frame 111 are rotatably connected to a vertical roller 13 through a bearing seat.

[0012] Furthermore, the bottom of the lower frame 112 is slidably connected to the slide rail 16, and a positioning push rod 17 is connected to one side of the lower frame 112. 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 winding unit.

[0013] Furthermore, the working unit also includes an epoxy machine 3 and an outer wall heating machine 5. In the working unit, the pressing mechanism 2, epoxy machine 3, wrapping mechanism 4, and outer wall heating machine 5 are arranged sequentially along the workpiece conveying direction.

[0014] Furthermore, the pressing mechanism 2 includes a frame consisting of a crossbeam 22 and a support leg fixedly connected to the end of the crossbeam 22. The bottom of the crossbeam 22 is fixedly connected to a slide groove 23, and the slide groove 23 is slidably connected to a slide rod 24. The bottom of the crossbeam 22 is fixedly connected to the body of the 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 a bearing seat.

[0015] Furthermore, the outer wall heating machine 5 includes a base 51, the top of which is fixedly connected to the 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 provided inside the heating ring shell 53, a guide rod 54 is fixedly connected to the top of the base 51, a guide block 531 is slidably connected to the guide rod 54, the guide block 531 is fixedly connected to the heating ring shell 53, and a universal wheel is provided at the bottom of the base 51.

[0016] Furthermore, the connecting parts between the bends 63 are a double-headed chuck 61 and / or an arc-shaped I-beam 62. The two ends of the arc-shaped I-beam 62 are respectively fixedly connected to the mounting blocks 621. One end of the locking screw 622 is fixedly connected to the top of the mounting block 621. The other end of the locking screw 622 passes through the side wall of the bend 63 and is fixedly connected to the nut.

[0017] Compared with the prior art, this utility model reduces the shaking generated during the wrapping process by connecting multiple bent pipes to form a ring, and using vertical rollers of multiple transmission mechanisms to abut against the inner ring of the ring workpiece to form a horizontal limit, and using a pressing mechanism to form a vertical limit. Attached Figure Description

[0018] Figure 1 It is a top view of the tape winding unit arranged in a circle;

[0019] Figure 2 This is a top view of the tape winding unit in its processing state;

[0020] Figure 3 This is a schematic diagram of the transmission mechanism;

[0021] Figure 4 This is a schematic diagram of the pressing mechanism;

[0022] Figure 5 This is a schematic diagram of the external wall heating machine;

[0023] Figure 6 This is a schematic diagram of the structure of a ring-shaped workpiece.

[0024] 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 drive motor 15, the slide rail 16, and the positioning push rod 17 are included.

[0025] Pressing mechanism 2, pressure roller 21, crossbeam 22, slide groove 23, slide rod 24, pressing push rod 25;

[0026] Epoxy machine 3

[0027] 4. Belt wrapping mechanism

[0028] 5. External wall heating unit, 51. Base, 52. Second lifting push rod, 53. Heating ring shell, 531. Guide block, 54.

[0029] 6. Ring-shaped workpiece, 61. Double-headed chuck, 62. Arc-shaped I-beam, 621. Mounting block, 622. Locking screw, 63. Bend. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] As attached Figure 1-2 As shown, a pipe bending and wrapping machine unit is provided, wherein the machines in the wrapping machine unit are arranged at intervals along the circumference, and annular workpieces 6 are set on the wrapping machine unit. The wrapping machine unit includes a transmission unit and a working unit, wherein:

[0033] The annular workpiece 6 includes at least two bent pipes 63 and a connector, wherein the at least two bent pipes 63 are connected by the connector to form a closed annular structure.

[0034] The transmission unit includes multiple transmission mechanisms 1 arranged at intervals. The multiple transmission mechanisms 1 cover 50% to 70% or more of the circle formed by the winding unit. That is, as shown in the figure, more than ten transmission mechanisms 1 surround and occupy an angle of more than 180° of the circle. The transmission mechanism 1 includes a horizontal roller 12 for supporting the annular workpiece 6 and a vertical roller 13 for abutting and limiting the inner ring of the annular workpiece 6. In the entire annular structure, the length of the bend 63 should account for 50% to 70% or more of the total length of the annular workpiece 6, so that the vertical roller 13 of the multiple transmission mechanisms 1 can form a limit in the inner ring of the annular workpiece 6.

[0035] The phrase “vertical roller 13 that abuts against and limits the inner ring of the annular workpiece 6” refers to the vertical roller 13 abutting against the outer wall of the bent pipe 63.

[0036] The working unit includes a wrapping mechanism 4 and a pressing mechanism 2. The pressing mechanism 2 is provided with a pressure roller 21 that contacts and presses down on the bent pipe 63. The wrapping mechanism 4 can be any wrapping mechanism in the prior art, preferably CN220198546U - a device for wrapping the outer anti-corrosion layer of a bent pipe.

[0037] Further details are attached. Figure 3As shown, the transmission mechanism 1 includes a frame 11, which includes an L-shaped upper frame 111 and a lower frame 112. The upper frame 111 and the lower frame 112 are slidably connected in the vertical direction. Specifically, a slide rail is fixed at the top of the lower frame 112, and a slider that cooperates with the slide rail is fixed at the bottom of the upper frame 111. A lifting push rod 14 is provided between the upper frame 111 and the lower frame 112 to adjust the height of the upper frame 111. The bottom edge and top of the L-shaped upper frame 111 are rotatably connected to a horizontal roller 12 through a bearing seat. The body of the drive motor 15 is fixedly connected to the upper frame 111. The output end of the drive motor 15 is connected to a section of the horizontal roller 12 extending from the bearing seat through a coupling. The side edge and top of the L-shaped upper frame 111 are rotatably connected to a vertical roller 13 through a bearing seat, so that the horizontal roller 12 and the vertical roller 13 also form an L-shaped support.

[0038] Furthermore, the bottom of the lower frame 112 is slidably connected to the slide rail 16, which is fixed to the ground or the base plate of the entire unit. A connecting block extends from one side of the lower frame 112, 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. The rod body of the positioning push rod 17 is hinged to the second set of hinge seats, which are fixedly connected to the ground or the base plate of the entire unit. The extension and retraction 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 moves away from or close to the center of the circle formed by the winding unit.

[0039] Furthermore, the working unit also includes an epoxy machine 3 and an external wall heating machine 5. In the working unit, the pressing mechanism 2, epoxy machine 3, wrapping mechanism 4, and external wall heating machine 5 are arranged sequentially 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 preliminary spraying treatment on the surface of the pipe 63 to form an anti-corrosion layer. Then, the wrapping mechanism 4 performs wrapping treatment on the surface of the pipe 63. Finally, the external wall heating machine 5 heats and heat-shrinks the composite tape to cure it.

[0040] Further details are attached. Figure 4 As shown, the pressing mechanism 2 includes a frame consisting of a crossbeam 22 and legs fixedly connected to the ends of the crossbeam 22. Preferably, the crossbeam 22 has legs fixed at both ends to form a portal frame. The bottom of the crossbeam 22 is fixedly connected to a slide groove 23, and the slide groove 23 is slidably connected to a slide rod 24. Preferably, there are two vertically parallel slide grooves 23, and the slide rod 24 is slidably connected between the two slide grooves 23. The bottom of the crossbeam 22 is fixedly connected to the body of the 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 a bearing seat.

[0041] Further details are attached. Figure 5As shown, the outer wall heating machine 5 includes a base 51, the top of which is fixedly connected to the body of a second lifting push rod 52, the output end of which is fixedly connected to a heating ring shell 53. The heating ring shell 53 is annular, with a heating element installed inside through which a pipe 63 passes. The heating element can be a heating wire arranged in a ring. The top of the base 51 is fixedly connected to a guide rod 54, and a guide block 531 is slidably connected to the guide rod 54. The guide block 531 is fixedly connected to the heating ring shell 53. The bottom of the base 51 is equipped with casters for easy transport and movement.

[0042] The bottom of the wrapping mechanism 4 can also be slidably connected to the slide rail 16. The slide rail 16 is fixed to the ground or the base plate of the entire unit. A connecting block extends out from one side of the bottom of the wrapping mechanism 4. 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. The rod body of the positioning push rod 17 is hinged to the second set of hinge seats. The second set of hinge seats is fixedly connected to the ground or the base plate of the entire unit. The extension and retraction 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 wrapping mechanism 4 moves away from or closer to the center of the circle formed by the arrangement of the wrapping units, which is used to adjust the position of the wrapping mechanism 4.

[0043] A set of transmission mechanisms 1 can be respectively set on the front and rear sides of the winding mechanism 4 along the feeding direction to provide reliable support and limit.

[0044] Further details are attached. Figure 2 , 6 As shown, the connecting parts between the bends 63 are a double-headed chuck 61 and / or an arc-shaped I-beam 62. The double-headed chuck 61 is existing technology, with a disc-shaped middle section and three or more support claws on both sides that can be extended outwards. It is generally used to connect the ends of two pipes during pipe processing. However, as shown in the figure, after three 90° bends 63 are connected by the double-headed chuck 61, the remaining part is less than 90°, making it difficult to connect four 90° bends 63. Therefore, an arc-shaped I-beam 62 is provided to make up for the bends. The radius of the arc-shaped I-beam 62 is preferably equal to that of the bends 63. The two ends of the arc-shaped I-beam 62 are respectively fixedly connected to mounting blocks 621. One end of the locking screw 622 is fixedly connected to the top of the mounting block 621. The other end of the locking screw 622 passes through the side wall of the bend 63 and is fixedly connected to a nut to form a non-opening annular workpiece 6.

[0045] A tape winding method including the above-mentioned pipe bending and winding machine unit, the method being:

[0046] S1. Prepare a double-headed chuck 61 and / or an arc-shaped I-beam 62 according to the radius and curvature of the bend 63;

[0047] S2. Place 2-4 bent pipes 63 sequentially on the winding machine unit, and connect the 2-4 bent pipes 63 to form an open ring workpiece 6 through the double-headed chuck 61 and / or the arc-shaped I-beam 62, so that the ring workpiece 6 is assembled on the winding machine unit.

[0048] S3. Adjust the position of each transmission mechanism 1 on the slide rail 16 by 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 bend 63 of the inner ring of the annular workpiece 6.

[0049] S4. Press down the pressure roller 21 by pressing down the push rod 25 and make it abut against the top of the bent tube 63;

[0050] S5. Move the outer wall heater 5 and adjust the height of the heating ring shell 53 by means of the second lifting push rod 52;

[0051] S6. Start the drive motor 15 of the transmission mechanism 1 to drive the horizontal roller 12, and at the same time start the epoxy machine 3, the tape winding mechanism 4, and the outer wall heating machine 5 to perform tape winding operation on the bent pipe 63.

[0052] S7. After the tape is wrapped, remove the double-headed chuck 61 and / or the arc-shaped I-beam 62, and separate and remove the bent pipe 63.

[0053] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A pipe bending and wrapping machine unit, characterized in that: The machines in the tape winding unit are arranged at intervals along the circumference. The tape winding unit has annular workpieces (6). The tape winding unit includes a transmission unit and a working unit, wherein: The annular workpiece (6) includes at least two bends (63) and a connector, wherein the at least two bends (63) are connected by the connector to form a closed annular structure; The transmission unit includes multiple transmission mechanisms (1) spaced apart, the multiple transmission mechanisms (1) covering 50% or more of the circle formed by the arrangement of the winding unit, and the transmission mechanism (1) includes a horizontal roller (12) for supporting the annular workpiece (6) and a vertical roller (13) for abutting 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 pressure roller (21) that contacts and presses down on the bent tube (63).

2. The pipe bending and wrapping machine unit as described in claim 1, characterized in that: The transmission mechanism (1) includes a frame (11), which includes an L-shaped upper frame (111) and a lower frame (112). The upper frame (111) and the lower frame (112) are slidably connected in the vertical direction. A lifting push rod (14) is provided between the upper frame (111) and the lower frame (112). The bottom edge of the L-shaped upper frame (111) is rotatably connected to the horizontal roller (12) through a bearing seat. The body of the drive motor (15) is fixedly connected to the upper frame (111). The output end of the drive motor (15) is connected to the horizontal roller (12). The side edge of the L-shaped upper frame (111) is rotatably connected to the vertical roller (13) through a bearing seat.

3. The pipe bending and wrapping machine unit as described in claim 2, characterized in that: The bottom of the lower frame (112) is slidably connected to the slide rail (16), and the lower frame (112) is connected to the positioning push rod (17) on one side. 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 winding unit.

4. The pipe bending and wrapping machine unit as described 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 wrapping mechanism (4), and an outer wall heating machine (5) are arranged in sequence along the workpiece conveying direction.

5. A pipe bending and wrapping machine unit as described in claim 4, characterized in that: The pressing mechanism (2) includes a frame consisting of a crossbeam (22) and a support leg fixedly connected to the end of the crossbeam (22). The bottom of the crossbeam (22) is fixedly connected to a slide groove (23), and the slide groove (23) is slidably connected to a slide rod (24). The bottom of the crossbeam (22) is fixedly connected to the body of the 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 a bearing seat.

6. The pipe bending and wrapping machine unit as described in claim 4, characterized in that: The outer wall heating machine (5) includes a base (51), the top of the base (51) is fixedly connected to the 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 provided with a heating element, 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 the bottom of the base (51) is provided with casters.

7. A pipe bending and wrapping machine unit as described in claim 1, characterized in that: The connecting parts between the bends (63) are a double-headed chuck (61) and / or an arc-shaped I-beam (62). The two 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 the locking screw (622). The other end of the locking screw (622) passes through the side wall of the bend (63) and is fixedly connected to the nut.

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