Non-hot melting type reducing butt joint device based on HPVC electric power pipe laying

Abstract

The invention discloses a non-hot-melting type variable-diameter butt joint device based on HPVC electric power pipe laying, relates to the technical field of electric power pipe butt joint, and aims at the butt joint process during HPVC electric power pipe operation, the non-hot-melting type butt joint process is adopted, the whole process is specifically based on the cutting process, the inner circle cutting process and the outer circle cutting process are conducted on the two ends of two electric power pipes correspondingly, and the butt joint process is completed. Compared with a conventional hot melting mode, the method has the advantages that high temperature change does not exist in the whole process, and a hot air system is additionally arranged in the butt joint process, the hot air system does not have melting influence on the pipes, and therefore the butt joint effect of the pipes is improved. And specifically, the stability of the butt joint position is guaranteed in the overall butt joint process by means of the multiple outer circle clamping pieces, and the problem that the connection strength is affected due to incomplete welding and shrinkage cavities is avoided due to the fact that the melting process does not exist.

Description

Technical Field

[0001] The present invention relates to the technical field of power pipe docking, and particularly to a non - hot - melt type variable - diameter docking device based on the laying of HPVC power pipes. Background Art

[0002] During the construction process of HPVC power pipes, several power pipes need to be docked according to the laying path. The conventional docking method mainly relies on the fusion welding method. For example, the technical content in the publication numbers CN117565412A and CN113910036A can be referred to. Its essence is to use heat energy to melt one end of the power pipe to expand its diameter and complete the docking.

[0003] Moreover, higher requirements are imposed on the operation during the hot - melt process. Firstly, there is a temperature requirement. If the temperature is too high, the power pipe will be overly softened and the problem of over - melting will occur. If the temperature is insufficient, it will be difficult to perform hot - melt or there will be virtual melting. However, the key lies in that during the overall welding operation, if the pipe and the fitting are not kept on the same plane, "crooked welding" phenomena such as incomplete welding and insufficient fusion circles are likely to occur, reducing the connection strength. And the subsequent connection process mainly forms an integral body through the cooling process. However, if the fixture is removed too early or the cooling is uneven during the cooling stage, the fusion surface may be affected by tensile stress and small shrinkage holes or weak entanglement may occur, resulting in fine gaps between the hot - melted power pipes. For this, the present invention proposes a solution. Summary of the Invention

[0004] The purpose of the present invention is to provide a non - hot - melt type variable - diameter docking device based on the laying of HPVC power pipes. For the hot - melt docking process of HPVC power pipes, because the operation difficulty requirements in the overall hot - melt process are relatively high. Firstly, its temperature control is crucial, as the temperature difference directly affects the overall hot - melt quality. However, the key lies in that quality problems such as incomplete welding and shrinkage holes that affect the connection strength may also occur during the operation process.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A non - hot - melt type variable - diameter docking device based on the laying of HPVC power pipes, including a workbench. An X - direction sliding seat structure and a Y - direction sliding table are respectively arranged on the workbench along the X - direction and the Y - direction. A cutting component and a docking component are respectively arranged on the Y - direction sliding table along its length direction, and a Y - direction driving structure is installed on the Y - direction sliding table. The cutting component is used to perform outer - circle cutting actions and inner - circle cutting actions on the HPVC power pipes respectively to obtain two pre - processed parts. The docking component is used to perform docking actions on the pre - processed parts, and perform two actions of outer - circle loading and hot - air assistance on the pre - processed parts during the docking actions.

[0006] Further set as: The cutting assembly includes an intermediate mounting table, a left outer ring sleeve, a right outer ring sleeve, an inner top column, and an action driving structure mounted on the surface of the Y-direction slide table. The inner top column is rotatably connected to the intermediate mounting table through the action driving structure. The left outer ring sleeve and the right outer ring sleeve are respectively located on both sides of the intermediate mounting table, and the left outer ring sleeve and the right outer ring sleeve are fixedly connected and rotatably connected to the intermediate mounting table respectively.

[0007] Further set as: The right outer ring sleeve is fixedly connected to one end of the inner top column, and cutting blades are provided on the outer wall position of the inner top column corresponding to the side of the left outer ring sleeve and the inner wall position of the right outer ring sleeve.

[0008] Further set as: The X-direction slide seat structure is symmetrically arranged along the Y-direction slide table, and a directional clamping table corresponding to the HPVC power pipe is provided on the X-direction slide seat structure.

[0009] Further set as: The cutting assembly includes a placement table, a clamping arc table, an air pump assembly, outer circular clamping pieces, and a flipping structure mounted on the Y-direction slide table. The clamping arc table is hinged to one end of the placement table through the flipping structure. The outer circular clamping pieces are arranged in an annular array along the center points of the placement table and the clamping arc table, and small air sleeves corresponding to the outer circular clamping pieces are installed outside the placement table and the clamping arc table.

[0010] Further set as: A connecting rod extending to the outer circular clamping piece is slidably installed inside the small air sleeve. The end of the connecting rod is set as a sphere, and a spring is provided at one end of the connecting rod corresponding to the inside of the small air sleeve. The small air sleeves inside the placement table and the clamping arc table are connected and communicated through a hose.

[0011] Further set as: Yielding ring grooves corresponding to the HPVC power pipe are opened inside the placement table and the clamping arc table. Sealing members are provided between both ends of the yielding ring grooves and the outer wall of the HPVC power pipe, and the outer diameter of the middle section of the yielding ring groove corresponding to the outer circular clamping piece is larger than the outer wall diameter of the HPVC power pipe.

[0012] Further set as: Grooves corresponding to the length mode of the HPVC power pipe are opened on the inner wall position of the outer circular clamping piece. The output section position of the air pump assembly is connected and communicated with one or more of the small air sleeves and the inside of the yielding ring groove.

[0013] The present invention has the following beneficial effects: 1. The overall solution is for the butt - joint process during the operation of HPVC power pipes. The direct difference from the conventional method is that instead of using the high - temperature hot - melting method, two inner pressing columns in a coaxial rotating state are used to synchronously cut the inner - ring part and the outer - circle part of two HPVC power pipes, thus forming a butt - joint method where the outer - circle sleeve holds the inner - circle. The obvious difference from the conventional hot - melting method is that the cutting operation is relatively simple and effective, avoiding the problems of over - melting or unstable hot - melting of HPVC power pipes caused by high - temperature environments, and thus avoiding quality problems such as incomplete fusion and shrinkage holes that affect the connection strength. 2. The key of the overall solution lies in the butt - joint process. The butt - joint process is based on two pre - processed parts obtained from the cutting process, and adopts the method of directional extrusion. In the butt - joint process, an outer - circle clamping piece is added to squeeze the inner - ring part, aiming to maintain the butt - joint direction and avoid the problem of misalignment during the butt - joint process. In addition, a hot - air assistance method is further added. In essence, when the butt - joint is carried out synchronously, it will assist in softening the inner - circle or outer - circle part, but will not directly melt. It ensures that the inner - circle part in the pre - processed part is inserted into the outer - circle part in the relative position. The overall operation process is very simple and will not have abnormal problems caused by temperature changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 Schematic diagram of the structure of a non - hot - melting variable - diameter butt - joint device for HPVC power pipe laying proposed by the present invention; Figure 2 Schematic diagram of the structure of the cutting component in a non - hot - melting variable - diameter butt - joint device for HPVC power pipe laying proposed by the present invention; Figure 3 In the non - hot - melting variable - diameter butt - joint device for HPVC power pipe laying proposed by the present invention Figure 2 sectional view; Figure 4 Schematic diagram of the butt - joint of power pipes in a non - hot - melting variable - diameter butt - joint device for HPVC power pipe laying proposed by the present invention; Figure 5 Schematic diagram of the structure of the butt - joint component in a non - hot - melting variable - diameter butt - joint device for HPVC power pipe laying proposed by the present invention; Figure 6 In the non - hot - melting variable - diameter butt - joint device for HPVC power pipe laying proposed by the present inventionFigure 5 Cross-sectional view corresponding to the Y direction; Figure 7 It is a schematic structural diagram of an outer circular clip in a non - hot - melt type variable - diameter docking device for HPVC power pipe laying proposed by the present invention; Figure 8 In the non - hot - melt type variable - diameter docking device for HPVC power pipe laying proposed by the present invention Figure 5 Partial sectional view.

[0016] In the figure: 1, workbench; 2, inner top column; 3, left outer ring sleeve; 4, Y - direction driving structure; 5, Y - direction sliding table; 6, action driving structure; 7, right outer ring sleeve; 8, placement table; 9, clamping arc table; 901, relief ring groove; 10, directional clamping table; 11, intermediate installation table; 12, flipping structure; 13, air pump assembly; 14, X - direction sliding seat structure; 15, small air sleeve; 16, outer circular clip; 17, connecting rod; 18, spring. Specific embodiments

[0017] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Embodiment 1: Regarding the hot - melt docking process of HPVC power pipes, because the operation difficulty requirements in the overall hot - melt process are relatively high. First of all, its temperature control is crucial, as temperature differences directly affect the overall hot - melt quality. However, the key lies in that quality problems such as incomplete fusion and shrinkage holes may also occur during the operation process, which affect the connection strength. Therefore, the following technical content is proposed: Referring to Figures 1 to 8 , in the non - hot - melt type variable - diameter docking device for HPVC power pipe laying in this embodiment, it includes a workbench 1. An X - direction sliding seat structure 14 and a Y - direction sliding table 5 are respectively arranged on the workbench 1 along the X - direction and the Y - direction. A cutting component and a docking component are respectively arranged on the Y - direction sliding table 5 along its length direction, and a Y - direction driving structure 4 is installed on the Y - direction sliding table 5; The cutting assembly is used to perform outer circle cutting and inner circle cutting operations on the HPVC power pipe respectively to obtain two pre-processed parts. Therefore, the docking assembly is used to perform docking operations on the pre-processed parts, and perform two operations of outer circle loading and hot air assistance on the pre-processed parts during the docking operation. The cutting assembly includes an intermediate mounting table 11, a left outer ring sleeve 3, a right outer ring sleeve 7, an inner top column 2, and an action driving structure 6 mounted on the surface of the Y-direction sliding table 5. The inner top column 2 is rotatably connected to the intermediate mounting table 11 through the action driving structure. The left outer ring sleeve 3 and the right outer ring sleeve 7 are respectively located on both sides of the intermediate mounting table 11, and the left outer ring sleeve 3 and the right outer ring sleeve 7 are respectively fixedly connected and rotatably connected to the intermediate mounting table 11. The right outer ring sleeve 7 is fixedly connected to one end of the inner top column 2, and cutting blades are provided on the outer wall position of the inner top column 2 corresponding to the left outer ring sleeve 3 and the inner wall position of the right outer ring sleeve 7.

[0019] Basic principle: First, a simple description of the hot melt docking method for HPVC power pipes is given. Its essence is to first mill the two ends of the two HPVC electric pipes, and then heat the milled ends of the HPVC at a high temperature to make it in a semi-molten state. Finally, the semi-molten ends of the two HPVC power pipes are docked, and after cooling, the two HPVC power pipes become one. However, the direct difference between the present invention and the conventional docking method is: specifically taking Figure 2 as an example, first, the action driving structure 6 drives the right outer ring sleeve 7 to rotate at a constant speed in a fixed direction. When the right outer ring sleeve 7 rotates, since cutting blades are installed on the inner wall position of the right outer ring sleeve 7, and because the right outer ring sleeve 7 and the inner top column 2 are fixedly connected, and cutting blades are also installed on the outer wall at one end of the inner top column 2, the diameter ranges of the inner top column 2 and the right outer ring sleeve 7 are restricted. Specifically, according to the outer diameter of the HPVC power pipe, it is ensured that the cutting blades in the right outer ring sleeve 7 cut the outer wall part of the HPVC power pipe to form an outer circle, and the cutting blades in the inner top column 2 cut the inner wall part of the HPVC power pipe to form an inner circle. The left outer ring sleeve 3 is an external support structure during the cutting operation of the inner wall part of the HPVC power pipe, and the other end of the inner top column 2 is an internal support structure during the cutting operation of the outer wall part of the HPVC power pipe. Therefore, the installation methods of the inner top column 2, the right outer ring sleeve 7, and the left outer ring sleeve 7 need to be further restricted. Specifically, it is shown as follows: the right outer ring sleeve 7 is directly connected to the inner top column 2, and the right outer ring sleeve 7 is driven by the action driving structure 6. The essence of the action driving structure 6 is a gear meshing transmission structure. The left outer ring sleeve 3 can be either rotatable or fixed with the intermediate mounting table 11. The key is to ensure that the left outer ring sleeve 7 and the intermediate mounting table 11 maintain rotation, so as to refer to Figure 4, after the cutting operation on two HPVC power tubes, an inner circle and an outer circle part are formed. Assuming the thickness of the HPVC power tube is 5 mm, then the inner circle part can be used to represent the part cut out from the inner wall position of the HPVC power tube by 2.0 - 2.8 mm, and the outer circle part can be used to represent the part cut out from the outer wall position of the HPVC power tube by 2.0 - 2.8 mm. Thus, the outer circle part can be inserted into the inner circle part to form an integral body, and finally, secondary fixing and sealing can also be carried out through structures such as tapes.

[0020] Embodiment Two: An explanation of the switching process between the cutting operation and the docking operation is as follows: The X-direction slide structure 14 is symmetrically arranged along the Y-direction slide 5, and a directional clamping platform 10 corresponding to the HPVC power tube is provided on the X-direction slide structure 14.

[0021] Scheme description: Specifically, it is based on Figure 1 , where the essence of the X-direction slide structure 14 is a push cylinder structure, and a directional clamping platform 10 is added to the push cylinder structure. The main purpose of the directional clamping platform 10 is to perform preliminary positioning on the HPVC power tube in the cutting operation or the docking operation. After that, an X-direction power driving method is also provided for the cutting operation and the docking operation. For example, in the cutting operation, the X-direction slide structure 14 drives the two HPVC power tubes to move simultaneously towards the middle installation platform 11 for synchronous cutting. Relatively simply, after the cutting operation is completed, the two HPVC power tubes move in the reverse direction to reset. During this process, the Y-direction driving structure 4 drives the overall Y-direction slide 5 to move along the Y-direction. Briefly stated, the cutting component leaves the position corresponding to the HPVC power tube, and conversely, the docking component 8 moves to the position corresponding to the HPVC power tube. Before the docking operation, the flipping structure 12 is used to open the clamping arc platform 9, place the two cut HPVC power tubes on the placement platform 8, and re-fix the HPVC power tubes through the clamping arc platform 9 to ensure the position stability during the subsequent docking operation.

[0022] Embodiment Three: Combining with Embodiment Two, the following explanatory description of the docking operation in Embodiment One is as follows: The cutting assembly includes a placement table 8, a clamping arc table 9, an air pump assembly 13, an outer circular clamping piece 16 and a flip structure 12 installed on the Y-axis slide 5. The clamping arc table 9 is hinged to one end of the placement table 8 through the flip structure 12. The outer circular clamping piece 16 is arranged in a circular array along the center point of the placement table 8 and the clamping arc table 9, and the placement table 8 and the clamping arc table 9 are both installed with small air sleeves 15 corresponding to the outer circular clamping piece 16 on the outside. A connecting rod 17 extending to the outer circular clamping piece 16 is slidably installed inside the small air sleeve 15. The end of the connecting rod 17 is set as a sphere, and a spring 18 is set at one end of the connecting rod 17 corresponding to the inside of the small air sleeve 15. The inside of the small air sleeve 15 on the placement table 8 and the clamping arc table 9 is connected through a hose, and a clearance ring groove 901 corresponding to the HPVC power pipe is opened inside the placement table 8 and the clamping arc table 9. Seals are arranged between the two ends of the clearance ring groove 901 and the outer wall of the HPVC power pipe, and the outer diameter of the middle section of the clearance ring groove 901 corresponding to the outer circular clamping piece 16 is greater than the outer wall diameter of the HPVC power pipe. A groove corresponding to the length of the HPVC power pipe is opened on the inner wall of the outer circular clamping piece 16, and the output section of the air pump assembly 13 is connected with one or more small air sleeves 15 and the inside of the clearance ring groove 901.

[0023] Solution description: The essence of the docking action is to insert the outer circle part into the inner circle part, as shown in Example 1 and Figure 3 To illustrate, the thickness of the cutting blade on the inner top column 2 is exactly equal to the thickness of the cutting blade on the right outer ring sleeve 7, but unexpected interference may occur during the insertion process. In this regard, the present invention improves the docking process: S1: Reference Figure 6 To explain, at the moment when the two cut HPVC power pipes are in contact in the yielding ring groove 901, the air pump assembly 13 is first used to input a constant amount of gas to each small air sleeve 15 to ensure that each outer circle clip 16 is close to the outer wall position of the outer circle part at the same time, the purpose of which is to ensure that the HPVC power pipe in the outer circle part is just aligned with the inner circle part, and because each outer circle clip 16 is arranged in a circular array along the center point of the HPVC power pipe, when each outer circle clip 16 is completely in contact with the outer wall position of the outer circle part, it will not move in the direction close to the center point of the HPVC power pipe, the purpose of which is to avoid the outer circle clip 16 from causing deformation to the outer circle part, and finally the insertion docking process is performed through the X-axis slide seat structure 14; S2: As shown in S1, although the HPVC power pipe itself has a certain hardness, if the local positions of the outer circle part and the inner circle part interfere with each other, the insertion-type docking process will be affected. For this, the air pump assembly 13 is further used. The air pump assembly 13 essentially injects gas into each small air sleeve 15 to form power for each connecting rod 17 and the outer circle clamp 16, and can also inject gas into the inside of the yield ring groove 901. However, for the environment inside the overall yield ring groove 901, a heating assembly is additionally provided on the basis of the air pump assembly 13. The heating assembly does not directly heat the HPVC power pipe, but rather heats the gas injected into the yield ring groove 901. 1 is heated, and the heated gas is completely retained in the yielding ring groove 901, the purpose of which is to preliminarily soften the outer circle part and the inner circle part in the docking process, and the slots opened in each outer circle clamping piece 16 serve as a guide channel for the hot air flow, playing a "gas lubrication" role between the outer circle clamping piece 16 and the outer wall part of the inner circle part. Finally, after one end of the inner circle part contacts the outer circle clamping piece 16, the air pump assembly 13 and the spring 18 drive the outer circle clamping piece 16 to reset and detach from the outer wall position of the outer circle part, and finally the outer circle part is completely inserted into the inner circle part, and the clamping arc table 9 is opened to take out the docked HPVC power pipe; The inner and outer circular parts can also be fixed and sealed by structures such as tapes and rings, which is not relevant to the present invention.

[0024] In summary: for the docking process of HPVC power pipe operation, a non-hot-melt docking process is adopted. The overall process is based on the cutting process. The inner and outer circles of the two ends of the two power pipes are cut respectively so that the two can be aligned with the same diameter. The operation process is relatively simple. The obvious difference from the conventional hot-melt method is that there will be no high temperature changes in the overall process. Based on the above, it is supplemented that a hot air system is added during the docking process. The hot air system does not melt the pipe, but only softens the pipe. Specifically, multiple outer circle clips are used to ensure the stability of the docking position during the overall docking process. Because there is no melting process, problems such as incomplete welding and shrinkage holes that affect the connection strength are avoided.

[0025] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0026] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0027] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific embodiments. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A non - hot - melt variable - diameter docking device based on the laying of HPVC power pipes, including a workbench, characterized in that, An X-direction slide structure and a Y-direction slide are respectively arranged on the workbench along the X direction and the Y direction. A cutting assembly and a docking assembly are respectively arranged on the Y-direction slide along its length direction, and a Y-direction driving structure is installed on the Y-direction slide. The cutting assembly is used to perform outer-circle cutting actions and inner-circle cutting actions on the HPVC power pipe respectively to obtain two preprocessed parts. The docking assembly is used to perform docking actions on the preprocessed parts, and perform two actions of outer-circle loading and hot-air assistance on the preprocessed parts during the docking actions.

2. The non - hot - melt type variable - diameter butt - joint device based on HPVC power pipes according to claim 1, characterized in that, The cutting assembly includes an intermediate mounting table, a left outer ring sleeve, a right outer ring sleeve, an inner top column and an action driving structure mounted on the surface of the Y-direction slide. The inner top column is rotatably connected to the intermediate mounting table through the action driving structure. The left outer ring sleeve and the right outer ring sleeve are respectively located on both sides of the intermediate mounting table, and the left outer ring sleeve and the right outer ring sleeve are respectively fixedly connected and rotatably connected to the intermediate mounting table.

3. The non-fusion type diameter-variable butt joint device based on the laying of HPVC power pipes according to claim 2, wherein, The right outer ring sleeve is fixedly connected to one end position of the inner top column, and cutting blades are arranged on the outer wall position of the inner top column corresponding to one side of the left outer ring sleeve and the inner wall position of the right outer ring sleeve.

4. The non-fusion type diameter-changing butt joint device based on the laying of HPVC power pipes according to claim 1, characterized in that, The X-direction slide structure is symmetrically arranged along the Y-direction slide, and a directional clamping table corresponding to the HPVC power pipe is arranged on the X-direction slide structure.

5. The non-fusion type reducing butt joint device based on HPVC power pipes laid according to claim 1, characterized in that, The cutting assembly includes a placement table, a clamping arc table, an air pump assembly, outer-circle clamping pieces and a flipping structure mounted on the Y-direction slide. The clamping arc table is hinged to one end of the placement table through the flipping structure. The outer-circle clamping pieces are arranged in an annular array along the center points of the placement table and the clamping arc table, and small air sleeves corresponding to the outer-circle clamping pieces are installed outside the placement table and the clamping arc table.

6. The non-fusion type diameter-changing butt joint device based on HPVC power pipes according to claim 5, wherein, A connecting rod extending to the outer-circle clamping piece is slidably installed inside the small air sleeve. The end of the connecting rod is set as a sphere, and a spring is arranged at one end position of the connecting rod corresponding to the inside of the small air sleeve. The small air sleeves inside the placement table and the clamping arc table are connected and communicated through a hose.

7. The non-fusion type reducing butt joint device based on HPVC power pipes laid according to claim 5, characterized in that, A relief ring groove corresponding to the HPVC power pipe is opened inside the placement table and the clamping arc table. Sealing members are arranged between both ends of the relief ring groove and the outer wall of the HPVC power pipe, and the outer diameter of the middle section of the relief ring groove corresponding to the outer-circle clamping piece is larger than the outer wall diameter of the HPVC power pipe.

8. The non-fusion type reducing butt joint device based on HPVC power pipes according to claim 5, characterized in that, A slot corresponding to the length direction of the HPVC power pipe is opened on the inner wall position of the outer-circle clamping piece. The output section position of the air pump assembly is connected and communicated with one or more small air sleeves and the inside of the relief ring groove.

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