Automatic spiral winding device and method for prefabricated thermal insulation pipe

Abstract

The present invention discloses an automatic spiral winding device and method thereof, wherein the first and second support devices both have two rollers for rolling and supporting a working steel pipe; the rollers are arranged in pairs with adjustable spacing, the two rollers of the first support device are driven by a motor to rotate around their central axis, and the central axis of the rollers is parallel to the axial axis of the working steel pipe; the first trolley can be driven by a driving device to move in a direction parallel to the central axis of the rollers so that the reflective layer is spirally wound on the outer circumference of the working steel pipe; the second trolley can be driven by a driving device to move in the same moving direction as the first trolley so that the thermal insulation layer is spirally wound on the outer circumference of the working steel pipe. The beneficial effects brought by the present invention are: it has the advantages of ensuring the winding quality of fiber-type thermal insulation materials, requiring fewer staff members, and having high product production efficiency, greatly improving the winding efficiency of fiber-type thermal insulation materials, and reducing labor costs.

Description

Technical Field

[0001] The invention belongs to the technical field of thermal insulation of prefabricated thermal insulation pipes, and in particular relates to an automatic spiral winding device and a method for prefabricated thermal insulation pipes. Background Art

[0002] The outside of the working pipe of the prefabricated insulation pipe needs to be wrapped with insulation materials. The winding of insulation materials is generally done manually, but there are many defects in manual winding of insulation materials. First, the efficiency of manual operation is low. In order to ensure the construction efficiency and meet the needs of the enterprise, more operators are deployed; second, the packaging appearance and quality of manual operation vary according to the proficiency, and the insulation thickness is uneven; third, the debris on the fiber insulation sticks to the packaging workers, which will cause some discomfort and is not easy to remove. With the development of heating network technology, the quality of pipeline insulation material wrapping and the efficiency of winding construction are increasingly required. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an automatic spiral winding device and method for prefabricated thermal insulation pipes, which can improve winding efficiency and thickness uniformity and reduce winding costs.

[0004] The present invention is implemented as follows: an automatic spiral winding device for prefabricated thermal insulation pipes, comprising:

[0005] A first and a second supporting device for supporting the end of the working steel pipe respectively, wherein the first and the second supporting device each have two rollers for rolling and supporting the working steel pipe; the rollers are arranged in pairs with an adjustable spacing, and the two rollers of the first supporting device are driven by a motor to rotate around their central axes, and the central axes of the rollers are parallel to the axial axis of the working steel pipe;

[0006] A first trolley for placing a reflective layer roller, wherein the first trolley can be driven by a driving device to move in a direction parallel to the central axis of the roller so that the reflective layer is spirally wound on the outer circumferential surface of the working steel pipe;

[0007] A second trolley is used for placing the insulation layer roller. The second trolley can be driven by a driving device to move along the same moving direction as the first trolley so that the insulation layer is spirally wound on the outer cylindrical surface of the working steel pipe.

[0008] Further,

[0009] The first and second supporting devices both include a crossbeam, a crossbeam bracket, a bracket guide rail and a roller bracket; the crossbeam is arranged on the crossbeam bracket, the bracket guide rail is arranged on the crossbeam, the roller brackets are arranged in pairs and slidably connected to the bracket guide rails, and the rollers are rotatably arranged on the roller brackets to adjust the center distance of the two rollers arranged in pairs.

[0010] Further,

[0011] The crossbeam bracket is slidably connected to the crossbeam to adjust the height of the crossbeam.

[0012] Further,

[0013] The first and second supporting devices also include limiting rollers for axially limiting the working steel pipe, and the limiting rollers are arranged on the crossbeam.

[0014] Further,

[0015] The second supporting device locks the distance between the second supporting device and the first supporting device through a locking device.

[0016] Further,

[0017] The first trolley is ensured to move linearly by a first guide rail, the second trolley is ensured to move linearly by a second guide rail, the second supporting device is ensured to move linearly by a third guide rail, and the locking device can be locked with the third guide rail.

[0018] Further,

[0019] The first trolley and the second trolley are respectively arranged on both sides of the working steel pipe.

[0020] Further,

[0021] Also includes:

[0022] Balers for baling working steel pipes, and

[0023] A third trolley is used for carrying the baling machine. The third trolley can be driven by a driving device to move along the same moving direction as the first trolley so that the packaging belt is wound around the outer cylindrical surface of the working steel pipe.

[0024] Further,

[0025] The third trolley is ensured to move in a straight line by means of a fourth guide rail.

[0026] Further,

[0027] The center of the two rollers arranged in pairs forms an angle of 120° with the line connecting the center of the working steel pipe.

[0028] The present invention also provides an automatic spiral winding method for prefabricated thermal insulation pipes, which is completed by the above-mentioned automatic spiral winding device for prefabricated thermal insulation pipes, and includes the following steps:

[0029] Place the working steel pipe on the roller and make the height of the central axis of the working steel pipe reach the set height;

[0030] Drive the working steel pipe to perform a trial run at a set linear speed and stop the rotation after the linear speed of the outer cylindrical surface of the working steel pipe is stable;

[0031] Pull out the insulation tape and cut off the excess bevel according to the first spiral angle. After the cut, the head of the insulation tape is wrapped around the working steel pipe once and fixed to the starting end of the working steel pipe, leaving a certain length of non-insulated area; pull out the reflective tape and cut off the excess bevel according to the second spiral angle. After the cut, the head of the reflective tape is wrapped around the working steel pipe once and fixed to the starting end of the working steel pipe;

[0032] The first trolley, the second trolley and the working steel pipe are operated at a set speed to complete the winding of the thermal insulation layer and the reflective layer.

[0033] Further,

[0034] The winding directions of the thermal insulation tape and the reflective tape are opposite.

[0035] Further,

[0036] The calculation formula for the first helix angle is:

[0037]

[0038] The calculation formula for the second helix angle is:

[0039]

[0040] The calculation formula for the moving speed of the first car is:

[0041]

[0042] The calculation formula for the moving speed of the second car is:

[0043]

[0044] Among them, A1 is the width of the insulation tape, d is the outer diameter of the working steel pipe 1, t is the total winding thickness of the insulation tape and the reflective tape, A2 is the width of the reflective tape, ΔA is the overlap of the reflective tape, and S is the outer cylindrical surface linear velocity of the working steel pipe 1.

[0045] Further,

[0046] The following steps are also included:

[0047] After the heat-insulating cloth tape and the reflective cloth tape are wound for a certain distance, the baling machine is started to baling the working steel pipe 1 from the starting end thereof.

[0048] The beneficial effects brought by the present invention are: ensuring the winding quality of fiber thermal insulation materials, requiring fewer staff and having high product production efficiency, greatly improving the winding efficiency of fiber thermal insulation materials and reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a structural front view of the automatic spiral winding device in the present invention;

[0050] Figure 2 yes Figure 1 A structural side view of the automatic spiral winding device shown;

[0051] Figure 3 It is a schematic diagram of the spiral winding of the thermal insulation tape in the present invention. DETAILED DESCRIPTION

[0052] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0053] like Figure 1 and 2 As shown, an automatic spiral winding device for prefabricated insulated pipes includes a first and a second supporting device 18, 17 for respectively supporting the ends of a working steel pipe 1, a first trolley 14 for placing a reflective layer roller 8, and a second trolley 15 for placing an insulating layer roller 9.

[0054] The first and second support devices 18 and 17 each have two rollers 2 for rolling support of the working steel pipe 1; the rollers 2 are arranged in pairs with adjustable spacing, and the two rollers 2 of the first support device 18 are driven by a motor 20 to rotate around their central axis, and the central axis of the rollers 2 is parallel to the axial axis of the working steel pipe 1. The first trolley 14 can be driven by the drive device to move in a direction parallel to the central axis of the rollers 2 so that the reflective layer is spirally wound on the outer circumferential surface of the working steel pipe 1. The second trolley 15 can be driven by the drive device to move in the same moving direction as the first trolley 14 so that the thermal insulation layer is spirally wound on the outer circumferential surface of the working steel pipe 1. The motor 20 connects the two rollers 2 in the first support device 18 through a belt transmission mechanism to drive the rollers 2. The reflective layer roller 8 is provided with an aluminum foil reflective material, and the thermal insulation layer roller 9 is provided with a fiber thermal insulation material.

[0055] In one embodiment, in order to keep the central axis of the working steel pipe 1 of different diameters at the same height, the center distance and height of the roller 2 need to be adjusted accordingly with the working steel pipe 1 of different diameters. Specifically, the first and second supporting devices 18 and 17 each include a crossbeam 5, a crossbeam bracket 6, a bracket guide rail 4 and a roller bracket 3. The crossbeam 5 is arranged on the crossbeam bracket 6, the bracket guide rail 4 is horizontally arranged on the crossbeam 5, the roller bracket 3 is arranged in pairs and slidably connected to the bracket guide rail 4, and the roller 2 is rotatably arranged on the roller bracket 3 to adjust the center distance of the two rollers 2 arranged in pairs. The crossbeam bracket 6 is slidably connected to the crossbeam 5 to adjust the height of the crossbeam 5. The two rollers 2 arranged in pairs are symmetrically arranged on the left and right sides of the working steel pipe 1 with the central axis of the working steel pipe 1 as the symmetry axis, and the center thereof forms an angle of 120° with the line connecting the center of the working steel pipe 1. The center height H of the working steel pipe 1 is a fixed value. According to the diameter of different pipes, the crossbeam 5 can adjust the vertical height through the crossbeam bracket 6, and the distance between the two rollers 2 can be controlled by moving the roller bracket 3, ultimately achieving the purpose of adjusting the center height H of the working steel pipe 1 with different pipe diameters.

[0056] In one embodiment, the first and second supporting devices 18 and 17 also include limiting rollers 7 for axially limiting the working steel pipe 1, and the limiting rollers 7 are arranged on the crossbeam 5. In the process of the first and second supporting devices 18 and 17 driving the working steel pipe 1 to rotate, it can ensure that the working steel pipe 1 is constrained between the two limiting rollers 7 to prevent it from axial movement, thereby ensuring the stability of the winding process.

[0057] In one embodiment, in order to achieve the purpose of keeping the second supporting device 17 in a fixed state after being adjusted to a suitable position, the second supporting device 17 is locked at a distance from the first supporting device 18 by a locking device 19 .

[0058] In one embodiment, the first trolley 14 ensures linear movement through the first guide rail 10, the second trolley 15 ensures linear movement through the second guide rail 11, the second support device 17 ensures linear movement through the third guide rail 22, and the locking device 19 can lock with the third guide rail 22. The first guide rail 10, the second guide rail 11 and the third guide rail 22 are all arranged on the ground in parallel with each other. The first trolley 14 and the second trolley 15 are respectively arranged on both sides of the working steel pipe 1.

[0059] In one embodiment, in order to package the working steel pipe 1 after the winding is completed, the automatic spiral winding device further includes: a baler 16 for packaging the working steel pipe 1, and a third trolley 13 for carrying the baler 16. The third trolley 13 can be driven by the driving device to move in the same moving direction as the first trolley 14 so that the packaging tape is wound on the outer circumferential surface of the working steel pipe 1. The third trolley 13 is ensured to move linearly by the fourth guide rail 12. It should be noted that the driving device drives the first trolley 14, the second trolley 15 and the third trolley 13 to move back and forth through the chain transmission mechanism respectively.

[0060] It should be noted that the automatic spiral winding device also includes a controller 21, which has a programmable function to achieve control of the entire device, but the present invention only involves structural improvements and does not improve the control program, so the specific control method of the controller 21 will not be repeated.

[0061] The present invention also provides an automatic spiral winding method, comprising the following steps:

[0062] According to the diameter of the working steel pipe 1, the distance between the two rollers 2 is adjusted to a position where the center angle is 120° through the bracket guide rail 4, and the height of the crossbeam 5 is adjusted to the center height H position of the working steel pipe 1 through the slide rail on the crossbeam bracket 6. The working steel pipe 1 is hoisted onto two supporting devices, with one end close to the first supporting device 18, and the second supporting device 17 is adjusted so that the limiting roller 7 thereon is close to the end of the working steel pipe 1.

[0063] Set the controller 21 to drive the roller 2 to rotate, so that the linear speed of the outer cylindrical surface of the working steel pipe 1 is controlled at 20m / min for trial operation, observe the operation of the working steel pipe 1, require the rotation speed of the working steel pipe 1 to be stable, safe and reliable, check that all fasteners are not loose, and stop the operation when everything is normal.

[0064] like Figure 3 As shown, pull out the insulation tape 24 and cut off the excess bevel according to the first spiral angle. After the cut, the head of the insulation tape 24 is wrapped around the working steel pipe 1 for one circle and then fixed to the starting end of the working steel pipe 1 with a self-adhesive, leaving a non-insulated area of ​​a certain length B, for example, 250 mm; pull out the reflective tape 23 and cut off the excess bevel according to the second spiral angle. After the cut, the head of the reflective tape 23 is wrapped around the working steel pipe 1 for one circle and then fixed to the starting end of the working steel pipe 1 with a self-adhesive. The winding directions of the insulation tape 24 and the reflective tape 23 are opposite.

[0065] The controller 21 drives the motor 22 and the drive motor to operate according to the set parameters, so that the first trolley 14, the second trolley 15, and the working steel pipe 1 run at the set speed to complete the winding of the insulation layer and the reflective layer. It should be noted that after winding one layer, the end end of the working steel pipe 1 is used as the starting end of the second layer winding, and the second layer winding is repeated with the same parameters. The second layer, the third layer, and the last layer are operated in the same way.

[0066] After the insulation tape 24 and the reflective tape 23 are wound for a certain distance, for example, 400 mm, the baler 16 is started to baling the working steel pipe 1 from the starting end thereof. The control program is started, the baler 16 baling one layer at the end of the first layer first, then baling to the other end of the working steel pipe 1, automatically stopping operation, and returning to the starting end.

[0067] The calculation formula for the first helix angle is:

[0068]

[0069] The calculation formula for the second helix angle is:

[0070]

[0071] The calculation formula for the moving speed of the first car is:

[0072]

[0073] The calculation formula for the moving speed of the second car is:

[0074]

[0075] Among them, A1 is the width of the insulation tape 24, d is the outer diameter of the working steel pipe 1, is the total winding thickness of the insulation tape and the reflective tape, A2 is the width of the reflective tape 23, ΔA is the overlap amount of the reflective tape 23, and S is the outer cylindrical surface linear speed of the working steel pipe 1. In one embodiment, A1=500mm, d=1020mm, t=50mm, A2=500mm, ΔA=30mm, S=2020m / min, and thus α1=8.46°, α2=7.61°, P1=3.01m / min, and P2=2.70m / min are calculated.

[0076] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An automatic spiral winding method for prefabricated insulated pipes, which is completed by an automatic spiral winding device for prefabricated insulated pipes, characterized in that: The device includes: A first and a second supporting device for supporting the end of the working steel pipe respectively, wherein the first and the second supporting device each have two rollers for rolling and supporting the working steel pipe; the rollers are arranged in pairs with an adjustable spacing, and the two rollers of the first supporting device are driven by a motor to rotate around their central axes, and the central axes of the rollers are parallel to the axial axis of the working steel pipe; A first trolley for placing a reflective layer roller, wherein the first trolley can be driven by a driving device to move in a direction parallel to the central axis of the roller so that the reflective layer is spirally wound on the outer circumferential surface of the working steel pipe; A second trolley for placing the insulation layer roller, the second trolley being able to move in the same moving direction as the first trolley under the drive of the driving device so that the insulation layer is spirally wound on the outer circumferential surface of the working steel pipe; The steps include: Place the working steel pipe on the roller and make the height of the central axis of the working steel pipe reach the set height; Drive the working steel pipe to perform a trial run at a set linear speed and stop the rotation after the linear speed of the outer cylindrical surface of the working steel pipe is stable; Pull out the insulation tape and cut off the excess bevel according to the first spiral angle. After the cut, the head of the insulation tape is wrapped around the working steel pipe once and fixed to the starting end of the working steel pipe, leaving a certain length of non-insulated area; pull out the reflective tape and cut off the excess bevel according to the second spiral angle. After the cut, the head of the reflective tape is wrapped around the working steel pipe once and fixed to the starting end of the working steel pipe; The first trolley, the second trolley and the working steel pipe are operated at a set speed to complete the winding of the thermal insulation layer and the reflective layer; the winding directions of the thermal insulation tape and the reflective tape are opposite; The calculation formula for the first helix angle is: The calculation formula for the second helix angle is: The calculation formula for the moving speed of the first car is: The calculation formula for the moving speed of the second car is: Among them, A1 is the width of the insulation tape, d is the outer diameter of the working steel pipe, t is the total winding thickness of the insulation tape and the reflective tape, A2 is the width of the reflective tape, ΔA is the overlap of the reflective tape, and S is the outer cylindrical surface linear velocity of the working steel pipe.

2. The automatic spiral winding method for prefabricated thermal insulation pipe according to claim 1, characterized in that: The first and second supporting devices both include a crossbeam, a crossbeam bracket, a bracket guide rail and a roller bracket; the crossbeam is arranged on the crossbeam bracket, the bracket guide rail is arranged on the crossbeam, the roller brackets are arranged in pairs and slidably connected to the bracket guide rails, and the rollers are rotatably arranged on the roller brackets to adjust the center distance of the two rollers arranged in pairs.

3. The automatic spiral winding method for prefabricated thermal insulation pipe according to claim 2, characterized in that: The crossbeam bracket is slidably connected to the crossbeam to adjust the height of the crossbeam.

4. The automatic spiral winding method for prefabricated thermal insulation pipe according to claim 2, characterized in that: The first and second supporting devices also include limiting rollers for axially limiting the working steel pipe, and the limiting rollers are arranged on the crossbeam.

5. The automatic spiral winding method for prefabricated thermal insulation pipe according to claim 1, characterized in that: The second supporting device locks the distance between the second supporting device and the first supporting device through a locking device.

6. The automatic spiral winding method for prefabricated thermal insulation pipe according to claim 5, characterized in that: The first trolley is ensured to move linearly by a first guide rail, the second trolley is ensured to move linearly by a second guide rail, the second supporting device is ensured to move linearly by a third guide rail, and the locking device can be locked with the third guide rail.

7. The automatic spiral winding method for prefabricated thermal insulation pipe according to claim 1, characterized in that: The first trolley and the second trolley are respectively arranged on both sides of the working steel pipe.

8. The automatic spiral winding method for prefabricated thermal insulation pipe according to claim 1, characterized in that: Also includes: Balers for baling working steel pipes, and A third trolley is used for carrying the baling machine. The third trolley can be driven by a driving device to move along the same moving direction as the first trolley so that the packaging belt is wound around the outer cylindrical surface of the working steel pipe.

9. The automatic spiral winding method for prefabricated thermal insulation pipe according to claim 8, characterized in that: The third trolley is ensured to move in a straight line by means of a fourth guide rail.

10. The automatic spiral winding method for prefabricated thermal insulation pipe according to claim 1, characterized in that: The center of the two rollers arranged in pairs forms an angle of 120° with the line connecting the center of the working steel pipe.

11. The automatic spiral winding method for prefabricated thermal insulation pipe according to claim 1, characterized in that: The following steps are also included: After the insulation tape and the reflective tape are wound for a certain distance, the baling machine is started to baling the working steel pipe from the starting end.

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