Pipe penetrating equipment for thermal insulation pipe machining

Abstract

The invention relates to the technical field of thermal insulation pipe penetrating, and discloses thermal insulation pipe machining pipe penetrating equipment which comprises a center rod fixedly installed through an external structure, two sets of inner supporting parts are arranged on the outer wall of the center rod, and each of the two sets of inner supporting parts comprises a plurality of inner supporting plates distributed annularly. The inner supporting plates of the two sets of inner supporting parts can be adjusted to be close to each other or away from each other, when the two sets of inner supporting plates are close to each other, each set of inner supporting plates can do centrifugal motion, and when the two sets of inner supporting plates are away from each other, each set of inner supporting plates can do centripetal motion. Pipe penetrating is carried out through the inner supporting assembly in an internal supporting mode, force can be distributed more evenly in the pipe penetrating process, friction force between a rubber protection sleeve and a heat preservation pipe is reduced, deformation of the rubber sleeve is avoided, the rubber protection sleeve and the heat preservation pipe can be aligned more accurately through the inner supporting assembly, and the sealing performance of the rubber protection sleeve and the heat preservation pipe is improved. And tight attachment of the pipes in the pipe penetrating process is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of thermal insulation pipe threading, in particular to a pipe threading device for thermal insulation pipe processing. Background Art

[0002] Insulated pipes are widely used in daily life and industry. In modern buildings and industrial systems, insulated pipes play a vital role. Whether it is a heating system in a home or a hot water delivery system in large industrial equipment, insulated pipes provide important support for energy saving and consumption reduction, improving system efficiency and ensuring safe operation. When installing insulated pipes, the pipe threading process is an important link to ensure the overall performance of the system. The success of pipe threading is directly related to the energy efficiency and reliability of the system.

[0003] For example, Chinese patent publication number CN115816019B discloses a pipe threading device and a pipe threading method for a prefabricated overhead insulated pipe, which belongs to the field of prefabricated overhead insulated pipes, and includes a support assembly; a transport assembly, which is arranged on the support assembly, and is provided with an outer sleeve, and the transport assembly is used to position and transport the outer sleeve; and a height adjustment member, which is arranged on the support assembly. The invention discloses a pipe threading device and a pipe threading method for a prefabricated overhead insulated pipe, which, through the distance measuring assembly and the height adjustment member, adjusts the height adjustment member to change the longitudinal distance of the insulated pipe to be threaded, touches and fits to the patch at one end of the insulated pipe to be threaded, and the touching and fitting area is smaller than the area of ​​the inner side surface of the patch, releases the positioning restriction of the height adjustment member on the insulated pipe to be threaded, manually adjusts the insulated pipe to be threaded so that the insulated pipe to be threaded is completely fitted with the patch, and then positions the insulated pipe to be threaded with the height adjustment member, so that the insulated pipe to be threaded is not damaged or scratched when the outer sleeve is threaded.

[0004] However, this type of pipe threading equipment is not suitable for threading soft pipes such as rubber sleeves. Rubber itself has a certain degree of flexibility and elasticity, and is prone to bend when subjected to force, thereby increasing the difficulty of pipe threading. In addition, rubber material has a high friction coefficient. When the rubber sleeve is put on the insulation pipe, the friction between the inner wall of the rubber sleeve and the outer wall of the insulation pipe will indeed be greater, further increasing the difficulty of pipe threading. Summary of the invention

[0005] The object of the present invention is to provide a pipe threading device for processing thermal insulation pipes to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pipe threading device for processing an insulation pipe, comprising a center rod fixedly installed by an external structure, two groups of inner support parts are arranged on the outer wall of the center rod, the two groups of inner support parts each contain a plurality of inner support plates distributed in an annular manner, and the inner support plates of the two groups of inner support parts can be adjusted to move closer to or farther away from each other, when the two groups of inner support plates move closer to each other, each group of inner support plates will perform centrifugal movement, when the two groups of inner support plates move away from each other, each group of inner support plates will perform centripetal movement, and when the inner support plates perform centrifugal movement, they will resist and support the protective sleeve or the insulation pipe;

[0007] It also includes a supporting component, which is used to support the protective sleeve and the thermal insulation pipe and keep the two in a coaxial state with the central rod at all times.

[0008] Preferably, the inner support portion comprises a center ring and an active ring slidably mounted on the outer wall of the center rod, a plurality of groups of inner support components arranged in an annular distribution are mounted between the center ring and the active ring, the inner support component comprises a first connecting rod rotatably mounted on the outer wall of the center ring, a second connecting rod rotatably mounted on the outer wall of the active ring, and a support plate is rotatably connected between the second connecting rod and the first connecting rod, a second elastic telescopic rod is mounted on the top of the support plate, and each of the inner support plates is fixedly mounted on one end of the corresponding second elastic telescopic rod;

[0009] The center rings of the two sets of inner support parts are connected to each other in a close fit, and the two center rings are respectively configured as a rotating ring and a sliding ring;

[0010] The pipe threading equipment for processing the thermal insulation pipe also includes a driving member for controlling the two active rings to move closer to or farther from each other.

[0011] Preferably, the support plate is provided with a square hole passing through the outer wall, the inner wall of the square hole of the support plate is provided with a circular groove, a sliding block is slidably installed on the inner wall of the square hole of the support plate, and the outer wall of the sliding block is provided with a circular hole corresponding to the circular groove, a protrusion is slidably installed in the circular hole of the sliding block, and a first spring is connected between the protrusion and the inner wall of the circular hole of the sliding block, the second elastic telescopic rod is fixedly installed on the top of the sliding block, a mounting ring is slidably installed on the outer wall of the center rod, and a third elastic telescopic rod is installed between the outer wall of the mounting ring and the bottom of the sliding block.

[0012] Preferably, the outer wall of the sliding ring is provided with a mounting groove, the inner wall of the mounting groove is rotatably provided with a rotating disk, the outer wall of the rotating disk is rotatably provided with a plurality of pawls, and a torsion spring is installed between the pawls and the rotating disk, the outer wall of the center rod is provided with a bevel rack, the bevel rack can contact and resist the pawl, and the rotating disk and the rotating shaft of one of the first connecting rods are driven by a transmission belt.

[0013] Preferably, the rotating sleeve is rotatably mounted on the outer wall of the center rod, and the rotating sleeve is rotatably connected to the sliding sleeve, the active ring corresponding to the rotating sleeve is set as a moving ring and a rotating ring, the moving ring is slidably mounted on the outer wall of the center rod, the rotating ring is rotatably mounted on the outer wall of the moving ring, and the insulation tube or protective sleeve can be driven to rotate by an external driving component.

[0014] Preferably, the support assembly includes a workbench arranged externally, a plurality of support wheels are installed on the top of the workbench, and the protective sleeve is supported by the support wheels;

[0015] The support assembly also includes a plurality of first elastic telescopic rods fixedly mounted on the outer wall of the center rod, each of the first elastic telescopic rods having a rotating wheel rotatably mounted on the outer wall thereof, the rotating wheel being in contact with and abutting against the inner wall of the thermal insulation tube, and the rotating wheel being driven to rotate by an external driving source.

[0016] Preferably, the driving member includes a threaded rod that passes through and is rotatably installed on the outer wall of the sliding ring. The threaded rod is driven to rotate by a motor installed on the outer wall of the sliding ring. Both ends of the threaded rod respectively pass through the movable rings and the active rings of the two sets of inner support parts, and are threadedly connected to the penetration points of the movable rings and the active rings. The outer walls of the rotating ring and the mounting ring are provided with arc-shaped grooves for the threaded rod to pass through and move.

[0017] Preferably, a heating ring is also installed on the top of the workbench, and the heating ring is arranged at the initial contact point between the protective sleeve and the insulation pipe.

[0018] Preferably, the third elastic telescopic rod includes a fixed sleeve fixedly mounted on the top of the mounting ring, a sliding rod is slidably mounted in the fixed sleeve, the top of the sliding rod is fixed to the bottom of the sliding block, and a second spring is connected between the sliding rod and the top of the fixed sleeve.

[0019] Preferably, the inner support plate is in the shape of an arc.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention uses an internal support component to perform pipe threading in a manner of internal support, so that the force can be distributed more evenly during the pipe threading process, reducing the friction between the rubber protective sleeve and the thermal insulation pipe, avoiding deformation of the rubber sleeve, and the internal support component can more accurately align the rubber protective sleeve and the thermal insulation pipe to ensure their close fit during the pipe threading process. When the rubber protective sleeve is supported internally by the internal support plate, the contact between the protective sleeve and the thermal insulation pipe can be enlarged to provide uniform pressure distribution and prevent the sleeve from shifting during the pipe threading process. The enlarged inner diameter provides more space, allowing the sleeve to slide through the thermal insulation pipe more easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A perspective view of the present invention;

[0023] Figure 2 It is a right side view of the present invention;

[0024] Figure 3 is a rear cross-sectional view of the present invention;

[0025] Figure 4 For the present invention Figure 3 A in the enlarged view;

[0026] Figure 5 For the present invention Figure 3 The enlarged view of point B in the figure;

[0027] Figure 6 This is a stereoscopic diagram of the present invention without the protective sleeve and the insulation tube;

[0028] Figure 7 It is a schematic diagram of the rotating wheel in the present invention.

[0029] In the figure: 1. workbench; 2. center rod; 3. protective sleeve; 4. insulation tube; 5. support wheel; 6. inner support plate; 7. first elastic telescopic rod; 8. rotating wheel; 9. rotating collar; 10. sliding collar; 11. moving ring; 12. first connecting rod; 13. support plate; 14. second elastic telescopic rod; 15. second connecting rod; 16. rotating ring; 17. sliding block; 18. protrusion; 19. first spring; 20. third elastic telescopic rod; 21. mounting ring; 22. threaded rod; 23. arc notch; 24. mounting groove; 25. rotating disk; 26. ratchet; 27. center ring; 28. transmission belt; 29. ​​bevel rack; 30. sliding rod; 31. fixed sleeve; 32. second spring; 33. active ring. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figures 1 to 7The present invention provides a technical solution: a pipe threading device for processing an insulation pipe, comprising a center rod 2 fixedly installed by an external structure, two groups of inner support parts are arranged on the outer wall of the center rod 2, the two groups of inner support parts each contain a plurality of inner support plates 6 distributed in an annular manner, and the inner support plates 6 of the two groups of inner support parts can be adjusted to move closer to or farther away from each other, when the two groups of inner support plates 6 are closer to each other, each group of inner support plates 6 will make centrifugal movement, when the two groups of inner support plates 6 are farther away from each other, each group of inner support plates 6 will make centripetal movement, and when the inner support plates 6 make centrifugal movement, they will resist and support the protective sleeve 3 or the insulation pipe 4;

[0032] It also includes a supporting component, which is used to support the protective sleeve 3 and the insulation pipe 4 and keep the two in a coaxial state with the central rod 2 at all times.

[0033] See also Figures 1 to 3 When it is necessary to thread the protective sleeve 3 and the thermal insulation tube 4 made of rubber material, the protective sleeve 3 and the thermal insulation tube 4 are first supported by the support assembly to keep the protective sleeve 3, the thermal insulation tube 4 and the center rod 2 in a coaxial state at all times, and then the two groups of inner support plates 6 are driven to approach each other. In the process of the two groups of inner support plates 6 approaching each other, centrifugal motion will be performed. When the two groups of inner support plates 6 are in contact with and abut against the protective sleeve 3 and the thermal insulation tube 4 respectively, the protective sleeve 3 and the thermal insulation tube 4 will be driven to approach each other, thereby completing the threading.

[0034] By using the inner support assembly to provide internal support for pipe threading, the force can be distributed more evenly during the threading process, reducing the friction between the rubber protective sleeve and the insulation pipe, avoiding deformation of the rubber sleeve, and the inner support assembly can more accurately align the rubber protective sleeve 3 and the insulation pipe 4 to ensure their close fit during the threading process. When the rubber protective sleeve 3 is supported by the inner support plate 6, the contact between the protective sleeve 3 and the insulation pipe 4 can be enlarged to provide uniform pressure distribution and prevent the sleeve from shifting during the threading process. The enlarged inner diameter provides more space, allowing the protective sleeve 3 to slide over the insulation pipe 4 more easily.

[0035] Further, the inner support portion includes a center ring 27 and an active ring 33 slidably mounted on the outer wall of the center rod 2, and a plurality of groups of inner support components arranged in an annular distribution are installed between the center ring 27 and the active ring 33, and the inner support component includes a first connecting rod 12 rotatably mounted on the outer wall of the center ring 27, and a second connecting rod 15 is rotatably mounted on the outer wall of the active ring 33, and a support plate 13 is rotatably connected between the second connecting rod 15 and the first connecting rod 12, and a second elastic telescopic rod 14 is installed on the top of the support plate 13, and each inner support plate 6 is fixedly mounted on one end of the corresponding second elastic telescopic rod 14;

[0036] The two sets of center rings 27 of the inner support parts are connected to each other in a close fit, and the two center rings 27 are respectively configured as a rotating collar 9 and a sliding collar 10;

[0037] The pipe threading equipment for processing the thermal insulation pipe also includes a driving member for controlling the two active rings 33 to move closer to or farther from each other.

[0038] See also Figure 3 , Figure 4 as well as Figure 5 When the device is working, the two active rings 33 are brought close to each other through the driving member. When the two are close to each other, they gradually approach the corresponding center ring 27. When the corresponding active ring 33 and the center ring 27 are close to each other, under the cooperation of the first connecting rod 12 and the second connecting rod 15, the support plate 13 and the second elastic telescopic rod 14 are driven to gradually move away from the center rod 2, thereby driving the inner support plate 6 to perform centrifugal movement until they contact and abut against the inner walls of the protective sleeve 3 and the insulation pipe 4. When the two groups of inner support plates 6 contact the corresponding protective sleeve 3 and the insulation pipe 4, they will continue to approach each other, thereby driving the protective sleeve 3 and the insulation pipe 4 to approach each other to complete the pipe threading. Compared with the external extrusion or pushing method, the internal expansion is easier to operate, especially in occasions where space is limited or the pipeline is long. In addition, since it is expanded from the inside, the external mechanical force can reduce the direct pressure and friction on the protective sleeve 3 made of soft rubber material, thereby reducing the risk of damage to the rubber pipe during the pipe threading process.

[0039] It is worth mentioning that the inner support plate 6 is preferably arranged near the contact port between the protective sleeve 3 and the insulation tube 4, so that when the inner support plate 6 makes centrifugal movement to support the insulation tube 4, the inner diameter of the protective sleeve 3 to be penetrated can be appropriately increased, and it can be more easily sleeved on the insulation tube 4, reducing the friction and resistance during the installation process, making the sleeve process smoother. When the two inner support plates 6 move away from each other, the supporting force on the insulation tube 4 will be released. At this time, the insulation tube 4 will elastically shrink and fit tightly to the outer wall of the protective sleeve 3, thereby providing a better sealing effect, which is very important for maintaining the insulation effect and preventing moisture penetration. In addition, during the sleeve connection process, the expansion and shrinkage of the protective sleeve 3 can help expel the air between the two, reduce the generation of bubbles and gaps, and thus improve the insulation effect.

[0040] Furthermore, a square hole penetrating the outer wall is provided on the support plate 13, a circular groove is provided on the inner wall of the square hole of the support plate 13, a sliding block 17 is slidably installed on the inner wall of the square hole of the support plate 13, and a circular hole corresponding to the circular groove is provided on the outer wall of the sliding block 17, a protrusion 18 is slidably installed in the circular hole of the sliding block 17, and a first spring 19 is connected between the protrusion 18 and the inner wall of the circular hole of the sliding block 17, the second elastic telescopic rod 14 is fixedly installed on the top of the sliding block 17, a mounting ring 21 is slidably installed on the outer wall of the center rod 2, and a third elastic telescopic rod 20 is installed between the outer wall of the mounting ring 21 and the bottom of the sliding block 17.

[0041] As can be seen from the above, when the active rings 33 on both sides are close to each other, the inner support plate 6 will contact and resist the corresponding protective sleeve 3 and thermal insulation pipe 4, and will drive the protective sleeve 3 and thermal insulation pipe 4 to gradually approach to complete the pipe threading process. However, when the two active rings 33 move away from each other to drive the inner support plate 6 to reset, the protective sleeve 3 and thermal insulation pipe 4 that have completed the pipe threading part may be separated again. This embodiment focuses on solving the above problems, and the specific methods are as follows:

[0042] See also Figure 5 Taking the insulation tube 4 and the corresponding inner support plate 6 in the insulation tube 4 as an example, when the inner support plate 6 performs centrifugal movement, it will gradually fit with the inner wall of the insulation tube 4, and will drive the insulation tube 4 to move in the direction close to the protective sleeve 3. In the process of pipe threading, the pressure of the inner support plate 6 on the insulation tube 4 will gradually increase, so that the pressure of the second elastic telescopic rod 14 on the sliding block 17 will gradually increase, and in the process of pipe threading, the support plate 13 and the sliding block 17 will drive the third elastic telescopic rod 20 to extend outward, so that the pulling force of the third elastic telescopic rod 20 on the sliding block 17 increases, and then the sliding block 17 is always subjected to the force toward the center rod 2. When the force on the sliding block 17 reaches a predetermined value, the protrusion 18 will contact the circular groove on the support plate 13. When the support plate 13 moves to a predetermined position, the force applied to the sliding block 17 by the third elastic telescopic rod 20 causes the sliding block 17 to move away from the center rod 2, and under the action of the first spring 19, the protrusion 18 will be reinserted into the circular groove of the support plate 13 to facilitate the next socketing process.

[0043] In this way, the protective sleeve 3 and the insulation tube 4 are inserted into the pipe by bringing the two groups of inner support plates 6 closer to each other, and when the two groups of inner support plates 6 are close to a preset distance, the inner support plates 6 are separated from the protective sleeve 3 or the insulation tube 4 by the disengagement of the protrusions 18 from the circular grooves on the support plates 13. In the process of the two groups of inner support plates 6 moving away from each other, the protrusions 18 will be reinserted into the circular grooves of the support plates 13 under the action of the third elastic telescopic rod 20 and the first spring 19, and this is repeated, which not only completes the insertion process of the protective sleeve 3 and the insulation tube 4, but also prevents the protective sleeve 3 and the insulation tube 4 from being separated again when the two groups of inner support plates 6 move away from each other, making the feasibility of the device higher.

[0044] Furthermore, a mounting groove 24 is provided on the outer wall of the sliding ring 10, a rotating disk 25 is rotatably installed on the inner wall of the mounting groove 24, a plurality of pawls 26 are rotatably installed on the outer wall of the rotating disk 25, and a torsion spring is installed between the pawls 26 and the rotating disk 25, an oblique rack 29 is provided on the outer wall of the center rod 2, the oblique rack 29 can contact and resist the pawls 26, and the rotating disk 25 and the rotating axis of one of the first connecting rods 12 are driven by a transmission belt 28.

[0045] See also Figure 3 In the process of the inner support plate 6 continuously moving back and forth to sleeve, the insulation tube 4 passing through the protective sleeve 3 may cause the inner support plate 6 in the protective sleeve 3 to interfere with the travel. This embodiment focuses on solving the above problem. The specific implementation method is as follows:

[0046] As can be seen from the above, when the device is working, it will drive the first connecting rod 12 to swing back and forth. Figure 4 When the two active rings 33 approach each other, the first connecting rod 12 will rotate in the direction away from the center rod 2. Through the transmission belt 28, the first connecting rod 12 will drive the rotating disk 25 to rotate in the same direction. At this time, the ratchet 26 on the rotating disk 25 will contact and abut against the oblique rack 29, and retract in the direction close to the rotating disk 25. After being separated from the oblique rack 29, it will pop out again under the action of the torsion spring, that is, when the oblique rack 29 contacts and abuts against the ratchet 26, the sliding ring 10 and the center rod 2 will not be relatively displaced.

[0047] When the two active rings 33 move away from each other, the first connecting rod 12 will rotate toward the center rod 2, thereby driving the rotating disk 25 to rotate, and with the cooperation of the pawl 26 and the bevel rack 29, the sliding ring 10 and the center rod 2 will be driven to have relative displacement, thereby driving the rotating ring 9 to move, and then driving the two groups of inner support parts to move, and the direction of movement always points to the end of the protective sleeve 3, so that the two groups of inner support parts can always be at the interface where the protective sleeve 3 and the insulation pipe 4 are connected, so that the inner support plate 6 will not be interfered by the outer wall of the insulation pipe 4 during operation, and the inner support plate 6 corresponding to the protective sleeve 3 is always in the area where the protective sleeve 3 is about to be sleeved when it is expanded, thereby expanding the protective sleeve 3 in this area to complete the sleeve connection process.

[0048] See also Figure 4 It is worth noting that when the rotating disk 25 rotates clockwise, the pawl 26 will contact the inclined surface of the bevel rack 29, thereby causing the pawl 26 to retract inward. When the pawl 26 disengages from the inclined surface of the bevel rack 29, the pawl 26 will be reset again by the torsion spring. When the rotating disk 25 rotates counterclockwise, the limiting portion on the rotating disk 25 will prevent the pawl 26 from rotating, thereby causing the pawl 26 to always contact the straight surface of the bevel rack 29, thereby driving the sliding ring 10 and the center rod 2 to undergo relative displacement.

[0049] It is worth mentioning that the transmission belt 28 can be driven by a belt and a pulley, or by a sprocket and a chain. The sprocket and chain are preferred because they can make the two rotate more synchronously.

[0050] Furthermore, the rotating ring 9 is rotatably installed on the outer wall of the center rod 2, and the rotating ring 9 is rotatably connected to the sliding ring 10. The active ring 33 corresponding to the rotating ring 9 is set as a moving ring 11 and a rotating ring 16. The moving ring 11 is slidably installed on the outer wall of the center rod 2, and the rotating ring 16 is rotatably installed on the outer wall of the moving ring 11. The insulation tube 4 or the protective sleeve 3 can be driven to rotate by an external driving component.

[0051] See also Figure 4 as well as Figure 6 By driving the protective sleeve 3 or the insulation pipe 4 to rotate through an external driving component, the pipe insertion process can be made smoother, reducing the damage to the rubber material caused by the straight insertion method, and the rotation helps the insulation pipe 4 to be evenly sleeved on the protective sleeve 3, avoiding local over-tightening or over-loosening, and ensuring the sealing and insulation effect after the sleeve.

[0052] It is worth noting that the rotating ring 9, the movable ring 11 and the rotating ring 16 should be located inside the rotatable protective sleeve 3 or the insulation tube 4, and preferably the insulation tube 4 is allowed to rotate because the insulation tube 4 is harder than the protective sleeve 3, more stable when rotating, and alignment is easier to control.

[0053] Furthermore, the support assembly includes a workbench 1 arranged outside, a plurality of support wheels 5 are installed on the top of the workbench 1, and the protective sleeve 3 is supported by the support wheels 5;

[0054] The support assembly also includes a plurality of first elastic telescopic rods 7 fixedly mounted on the outer wall of the center rod 2. A rotating wheel 8 is rotatably mounted on the outer wall of each first elastic telescopic rod 7. The rotating wheel 8 contacts and abuts against the inner wall of the insulation tube 4, and the rotating wheel 8 is driven to rotate by an external driving source.

[0055] See also Figure 1 as well as Figure 2 When it is necessary to insert the protective sleeve 3 and the insulation pipe 4, first place the protective sleeve 3 on the supporting wheel 5 on the top of the workbench 1, insert the center rod 2 into the protective sleeve 3 and fix it through the external structure, so that the protective sleeve 3 and the center rod 2 are in a coaxial state, and then put the insulation pipe 4 on the outside of the center rod 2, and support it through the cooperation of the first elastic telescopic rod 7 and the rotating wheel 8, so that the protective sleeve 3, the insulation pipe 4 and the center rod 2 always remain in a coaxial state, and the rotating wheel 8 is driven to rotate by an external driving source to achieve the purpose of rotating the insulation pipe 4.

[0056] It is worth mentioning that the design of the support wheel 5 can reduce the friction when the protective sleeve 3 gradually moves toward the tail of the insulation pipe 4, preventing damage to the surface of the protective sleeve 3 and affecting the subsequent insulation effect.

[0057] Furthermore, the driving member includes a threaded rod 22 that passes through and is rotatably installed on the outer wall of the sliding ring 10. The threaded rod 22 is driven to rotate by a motor installed on the outer wall of the sliding ring 10. Both ends of the threaded rod 22 respectively pass through the moving ring 11 and the active ring 33 of the two sets of inner support parts, and are threadedly connected to the penetration points of the moving ring 11 and the active ring 33. The outer walls of the rotating ring 9 and the mounting ring 21 are provided with arc-shaped grooves 23 for the threaded rod 22 to pass through and move.

[0058] See also Figure 6 When the device is working, the motor fixed on the outer wall of the sliding ring 10 drives the threaded rod 22 to rotate, so that the moving ring 11 and the active ring 33 of the two groups of inner support parts are close to each other, and then the two groups of inner support plates 6 are in contact with the corresponding protective sleeve 3 and the insulation pipe 4, and drive the protective sleeve 3 and the insulation pipe 4 to approach each other. After completing a pipe threading action, the motor flips, so that the moving ring 11 and the active ring 33 are separated from each other. During the process, the two groups of inner support plates 6 are reset to prepare for the next pipe threading action.

[0059] It is worth noting that, as mentioned above, the rotating wheel 8 is driven to rotate by an external driving source, thereby rotating the insulation tube 4. However, when the inner support plate 6 is engaged with the insulation tube 4, it will drive the rotating collar 9 and the rotating ring 16 to rotate, thereby causing travel interference with the threaded rod 22. Therefore, an arc-shaped groove 23 is opened on the outer wall of the rotating collar 9 and the mounting ring 21, and the rotation of the rotating wheel 8 is reciprocating, thereby causing the rotation of the insulation tube 4 to be reciprocating, and the threaded rod 22 will slide in the arc-shaped groove 23 to solve the travel interference between the threaded rod 22 and other parts.

[0060] Furthermore, a heating ring is installed on the top of the workbench 1 , and the heating ring is arranged at the initial contact point between the protective sleeve 3 and the insulation tube 4 .

[0061] A heating ring is installed on the top of the workbench 1 and is set at the initial contact point between the protective sleeve 3 and the insulation pipe 4. Heating can soften the rubber material, thereby reducing the difficulty of installation during initial pipe insertion and making it easier for the protective sleeve 3 to be sleeved on the outer wall of the protective sleeve 3.

[0062] Furthermore, the third elastic telescopic rod 20 includes a fixed sleeve 31 fixedly installed on the top of the mounting ring 21, a sliding rod 30 is slidably installed in the fixed sleeve 31, the top of the sliding rod 30 is fixed to the bottom of the sliding block 17, and a second spring 32 is connected between the sliding rod 30 and the top of the fixed sleeve 31.

[0063] See also Figure 5 When the inner support plate 6 performs centrifugal motion, the support plate 13 drives the sliding block 17 and the sliding rod 30 to move away from the center rod 2, thereby increasing the pulling force of the second spring 32 on the sliding rod 30, so that the sliding block 17 is subjected to downward pulling force. When the elastic force of the second elastic telescopic rod 14 on the top sliding block 17 and the pulling force of the sliding rod 30 on the bottom of the sliding block 17 reach a preset value, the protrusion 18 will be separated from the circular groove on the support plate 13, so that the inner support plate 6 is separated from the insulation pipe 4;

[0064] When the inner support plate 6 makes centripetal movement, the support plate 13 will drive the sliding block 17 to gradually approach the center rod 2, so that the elastic force of the second spring 32 on the sliding rod 30 gradually increases, and then the elastic force on the sliding block 17 increases. When the elastic force on the bottom of the sliding block 17 reaches a preset value, the protrusion 18 will enter the circular groove of the support plate 13 again under the action of the first spring 19, preparing for the next passing action.

[0065] Furthermore, the inner support plate 6 is in an arc shape.

[0066] See also Figure 6 The inner support plate 6 adopts an arc shape so that it can fit more closely with the inner walls of the protective sleeve 3 and the insulation pipe 4, and can effectively prevent relative sliding.

[0067] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0068] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe threading device for processing an insulation pipe, comprising a center rod (2) fixedly mounted by an external structure, characterized in that: Two groups of inner support parts are arranged on the outer wall of the central rod (2), and both groups of the inner support parts contain a plurality of inner support plates (6) distributed in an annular manner, and the inner support plates (6) of the two groups of the inner support parts can be adjusted to move closer to or farther away from each other, and when the two groups of the inner support plates (6) move closer to each other, each group of the inner support plates (6) will perform centrifugal movement, and when the two groups of the inner support plates (6) move away from each other, each group of the inner support plates (6) will perform centripetal movement, and when the inner support plates (6) perform centrifugal movement, they will resist and support the protective sleeve (3) or the insulation pipe (4); It also includes a support assembly, which is used to support the protective sleeve (3) and the thermal insulation pipe (4) and keep the two in a coaxial state with the central rod (2) at all times.

2. The pipe threading equipment for processing the thermal insulation pipe according to claim 1, characterized in that: The inner support portion comprises a center ring (27) and an active ring (33) slidably mounted on the outer wall of the center rod (2); a plurality of groups of inner support components arranged in an annular distribution are mounted between the center ring (27) and the active ring (33); the inner support components comprise a first connecting rod (12) rotatably mounted on the outer wall of the center ring (27); a second connecting rod (15) is rotatably mounted on the outer wall of the active ring (33); a support plate (13) is rotatably connected between the second connecting rod (15) and the first connecting rod (12); a second elastic telescopic rod (14) is mounted on the top of the support plate (13); and each of the inner support plates (6) is fixedly mounted on one end of the corresponding second elastic telescopic rod (14); The central rings (27) of the two sets of inner support parts are connected to each other in a close fit, and the two central rings (27) are respectively configured as a rotating sleeve ring (9) and a sliding sleeve ring (10); The pipe threading equipment for processing the thermal insulation pipe also includes a driving member for controlling the two active rings (33) to move closer to or farther from each other.

3. The pipe threading equipment for processing the thermal insulation pipe according to claim 2, characterized in that: The support plate (13) is provided with a square hole penetrating the outer wall, the inner wall of the square hole of the support plate (13) is provided with a circular groove, a sliding block (17) is slidably mounted on the inner wall of the square hole of the support plate (13), and the outer wall of the sliding block (17) is provided with a circular hole corresponding to the circular groove, a protrusion (18) is slidably mounted in the circular hole of the sliding block (17), and a first spring (19) is connected between the protrusion (18) and the inner wall of the circular hole of the sliding block (17), the second elastic telescopic rod (14) is fixedly mounted on the top of the sliding block (17), a mounting ring (21) is slidably mounted on the outer wall of the center rod (2), and a third elastic telescopic rod (20) is mounted between the outer wall of the mounting ring (21) and the bottom of the sliding block (17).

4. The pipe threading equipment for processing the thermal insulation pipe according to claim 2, characterized in that: The outer wall of the sliding ring (10) is provided with a mounting groove (24), the inner wall of the mounting groove (24) is rotatably provided with a rotating disk (25), the outer wall of the rotating disk (25) is rotatably provided with a plurality of ratchet pawls (26), and a torsion spring is installed between the ratchet pawls (26) and the rotating disk (25), the outer wall of the center rod (2) is provided with an oblique rack (29), the oblique rack (29) can contact and abut against the ratchet pawls (26), and the rotating disk (25) and the rotating shaft of one of the first connecting rods (12) are driven by a transmission belt (28).

5. The pipe threading equipment for processing the thermal insulation pipe according to claim 2, characterized in that: The rotating sleeve (9) is rotatably mounted on the outer wall of the center rod (2), and the rotating sleeve (9) is rotatably connected to the sliding sleeve (10). The active ring (33) corresponding to the rotating sleeve (9) is configured as a moving ring (11) and a rotating ring (16). The moving ring (11) is slidably mounted on the outer wall of the center rod (2), and the rotating ring (16) is rotatably mounted on the outer wall of the moving ring (11). The thermal insulation pipe (4) or the protective sleeve (3) can be driven to rotate by an external driving component.

6. The pipe threading equipment for processing the thermal insulation pipe according to claim 5, characterized in that: The support assembly comprises a workbench (1) arranged outside, a plurality of support wheels (5) are installed on the top of the workbench (1), and the protective sleeve (3) is supported by the support wheels (5); The support assembly further comprises a plurality of first elastic telescopic rods (7) fixedly mounted on the outer wall of the central rod (2), each of the first elastic telescopic rods (7) having a rotating wheel (8) rotatably mounted on the outer wall thereof, the rotating wheel (8) being in contact with and abutting against the inner wall of the thermal insulation pipe (4), and the rotating wheel (8) being driven to rotate by an external driving source.

7. The pipe threading equipment for processing the thermal insulation pipe according to claim 5, characterized in that: The driving member comprises a threaded rod (22) which penetrates and is rotatably mounted on the outer wall of the sliding collar (10); the threaded rod (22) is driven to rotate by a motor mounted on the outer wall of the sliding collar (10); two ends of the threaded rod (22) respectively penetrate the moving ring (11) and the active ring (33) of the two sets of inner support parts, and are threadedly connected to the penetration points of the moving ring (11) and the active ring (33); the outer walls of the rotating collar (9) and the mounting ring (21) are both provided with arc-shaped notches (23) for the threaded rod (22) to pass through and move.

8. The pipe threading equipment for processing the thermal insulation pipe according to claim 6, characterized in that: A heating ring is also installed on the top of the workbench (1), and the heating ring is arranged at the initial contact point between the protective sleeve (3) and the insulation pipe (4).

9. The pipe threading equipment for processing the thermal insulation pipe according to claim 3, characterized in that: The third elastic telescopic rod (20) comprises a fixed sleeve (31) fixedly mounted on the top of the mounting ring (21), a sliding rod (30) being slidably mounted in the fixed sleeve (31), the top end of the sliding rod (30) being fixed on the bottom of the sliding block (17), and a second spring (32) being connected between the sliding rod (30) and the top of the fixed sleeve (31).

10. The pipe threading equipment for processing the thermal insulation pipe according to any one of claims 1 to 9, characterized in that: The inner support plate (6) is in the shape of an arc.

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