Pipe pile roll welding machine

Abstract

The application provides a pipe pile roll welding machine, which comprises a roll welding frame and a wire penetrating die. The roll welding frame is provided with a through channel. The wire penetrating die comprises a conductive shaft which is arranged in the through channel in a clearance fit and a fixed plate which is located outside the through channel and fixedly connected with the conductive shaft. The fixed plate protrudes radially from the conductive shaft. At least one row of wire penetrating holes is arranged around the center line of the conductive shaft. The axial projection of the row of wire penetrating holes is located in the projection of the through channel. The fixed plate is further provided with an assembly connection part which is located outside the row of wire penetrating holes. The wire penetrating die is assembled on the roll welding frame through the assembly connection part. The problem of equal arrangement of the wire penetrating holes in the row of wire penetrating holes is solved. In addition, when the assembly connection part is detachably assembled on the roll welding frame, the assembly and disassembly of the wire penetrating die are facilitated.

Description

Pipe pile welding machine Technical Field

[0001] This invention relates to the field of steel cage production technology in the pipe pile industry, and more particularly to a pipe pile rolling welding machine. Background Technology

[0002] As is well known, pipe piles are a combination of precast concrete materials and steel cages, and are widely used in the construction industry.

[0003] In the production process of steel reinforcement cages, the use of a roll welding machine is indispensable. It is an essential piece of equipment for producing steel reinforcement cages. The rebar threading plate of the roll welding machine plays a role in controlling the multiple longitudinal rebars that make up the steel reinforcement cage to be arranged in a circle around the circumference and preventing the steel reinforcement cage from twisting and deforming.

[0004] However, in the pipe pile welding machine rebar insertion plate positioning structure disclosed in Chinese Patent Application No. 201120283388.2, because the front rebar insertion plate is fixed to the copper shaft support tube, and the rear rebar insertion plate is fixed to the rear end of the conductive copper shaft, the front end of the conductive copper shaft extends forward beyond the front rebar insertion plate, and the conductive copper shaft is fixed to the upper end of the copper shaft bracket through the copper shaft support tube, and the lower end of the copper shaft bracket is fixedly connected to the base of the welding machine, the copper shaft bracket is aligned with the front and rear rebar insertion plates along the axial direction of the conductive shaft. Combined with the different sizes of the reinforcing cage, it is inevitable that one or more rebar insertion holes on the front and rear rebar insertion plates will be located in the aligned portion of the front and rear rebar insertion plates, which will lead to the rebar insertion holes being located in the front and rear rebar insertion plates. The through holes on the aligned portion of the disc cannot be threaded due to the obstruction of the aligned portion of the copper shaft bracket. Therefore, the only way to avoid the through holes being located on the aligned portion of the front and rear through discs is to change the circumferential spacing of one or more through holes on the front and rear through discs. This results in the through holes on the front and rear through discs not being circumferentially evenly distributed. In addition, since the copper shaft bracket provides support and has rigidity requirements, opening matching through holes on the aligned portion of the copper shaft bracket will lead to insufficient rigidity. The key point is that when the front and rear through discs are changed to different specifications, the matching through holes opened on the aligned portion of the copper shaft bracket cannot match the through holes on the new specification front and rear through discs. Therefore, opening matching through holes on the copper shaft bracket is not advisable.

[0005] Meanwhile, in the pipe pile rolling welding machine rib-passing plate positioning structure disclosed in Chinese patent application No. 201120283388.2, when changing specifications, it is necessary to remove the rear rib-passing plate, the conductive copper shaft, and the front rib-passing plate in sequence before installing the new specification front rib-passing plate at the front end of the copper shaft support tube; then, the conductive copper shaft is axially inserted into the copper shaft support tube and fixed to the copper shaft support tube; finally, the new specification rear rib-passing plate is fixed to the rear end of the conductive copper shaft to achieve the purpose of changing specifications; this makes the specification changing operation cumbersome and inefficient.

[0006] Furthermore, in the pipe pile welding machine rib-passing plate positioning structure disclosed in Chinese patent application No. 201120283388.2, the weight of the front rib-passing plate, the rear rib-passing plate, the conductive shaft, the copper shaft support pipe, and the ribs passing through the front and rear rib-passing plates is supported by the copper shaft bracket. Therefore, the copper shaft bracket is required to have sufficient rigidity. In order to obtain the required rigidity, the axial dimension of the copper shaft bracket is designed to be relatively long. Correspondingly, the axial dimension of the conductive shaft is increased, which will result in the conductive line of the conductive shaft being too long.

[0007] Therefore, there is an urgent need for a pipe pile welding machine to overcome one or more of the above-mentioned defects. Summary of the Invention

[0008] The purpose of this invention is to provide a pipe pile rolling welding machine that solves the problem of equally spaced reinforcement holes.

[0009] To achieve the above objectives, the pipe pile welding machine of the present invention includes a welding frame, a base, and a rebar-piercing mold. The lower end of the welding frame is fixed to the base, and the welding frame has a through-channel. The rebar-piercing mold includes a conductive shaft that is spaced and inserted into the through-channel, and a fixing plate located outside the through-channel and fixedly connected to the conductive shaft. The fixing plate protrudes radially from the conductive shaft, and at least one ring of rebar-piercing holes arranged around the axis of the conductive shaft is formed at the radially protruding position of the fixing plate. The axial projection of the rebar-piercing hole ring along the conductive shaft is located within the projection of the through-channel. The fixing plate also has an assembly connection portion located outside the rebar-piercing hole ring, and the rebar-piercing mold is assembled to the welding frame through the assembly connection portion.

[0010] Compared with the prior art, since the fixed plate has at least one ring of through holes arranged around the axis of the conductive shaft at the position where it protrudes radially from the conductive shaft, and the fixed plate also has an assembly connection part located outside the through hole row, the through hole mold can be assembled to the welding frame of the pipe pile welding machine by means of the assembly connection part located outside the through hole row. In this way, the assembly connection part can avoid the influence of the circumferentially evenly distributed arrangement of the through hole row on the fixed plate, so that the through holes in the through hole row can achieve the purpose of circumferentially evenly distributed arrangement.

[0011] In addition, when the assembly connection part and the roll welding frame are detachable, the rib-piercing mold can be inserted into or removed from the through-channel of the roll welding frame along the axial direction of the conductive shaft, thereby making the replacement of the rib-piercing mold quick and convenient.

[0012] Preferably, the assembly connection is detachably mounted to the roll welding frame, the assembly connection is located on opposite and / or adjacent sides of the fixing plate, the projection of the assembly connection along the axial direction of the conductive shaft is outside the projection of the through channel, and the assembly connection abuts against the roll welding frame along the radial and / or axial direction of the conductive shaft.

[0013] Preferably, each of the assembly connection parts is provided with an assembly connection hole, and a fastener is inserted through the assembly connection hole. The fastener detachably assembles the assembly connection part with the roll welding frame so that the assembly connection part and the roll welding frame abut against each other.

[0014] Preferably, the roll welding machine frame is further provided with a support and positioning structure for supporting the assembly connection part, and the support and positioning structure supports and positions the assembly connection part in the vertical direction of the roll welding machine frame.

[0015] Preferably, the supporting and positioning structure is a barbed structure with the hook facing upward, and the assembly connection part is inserted into the barbed structure from the hook opening; or, the supporting and positioning structure is a pin structure.

[0016] Preferably, the assembly connection is in the shape of an "I" or an "L".

[0017] Preferably, the threading mold further includes threading discs arranged spaced apart from the fixed plate along the axial direction of the conductive shaft. At least one of the fixed plate and the conductive shaft is fixedly connected to the threading discs. The threading discs have a row of matching holes aligned with the threading hole row along the axial direction of the conductive shaft. The projection of the threading discs along the axial direction of the conductive shaft is located within the projection of the through channel.

[0018] Preferably, the threading mold further includes a guide tube extending axially along the conductive axis, one end of the guide tube passing through the matching hole row, the other end of the guide tube passing through the threading hole row, and the axial projection of the guide tube along the conductive axis located within the projection of the through channel.

[0019] Preferably, the threading plate is fixedly connected to the fixing plate, the fixing plate is also insulated from the conductive shaft, and a central through hole is provided in the middle of the threading plate, and the conductive shaft is inserted into the central through hole with a clearance fit.

[0020] Preferably, the threading mold further includes a conductive disk, an external conductive end, and an intermediate connecting bracket. The intermediate connecting bracket is located between the threading disk and the fixed plate, and is also located outside the matching hole row. One end of the intermediate connecting bracket is fixedly connected to the threading disk, and the other end of the intermediate connecting bracket is fixedly connected to the fixed plate. The conductive shaft is fixedly connected to the conductive disk at the position extending out of the intermediate through hole. The external conductive end is fixedly connected to the conductive shaft at a position adjacent to the fixed plate. The axial projections of the conductive disk and the intermediate connecting bracket along the conductive shaft are each located within the projection of the through channel. Attached Figure Description

[0021] Figure 1 is a perspective view of the pipe pile welding machine according to the first embodiment of the present invention.

[0022] Figure 2 is a projection view of the pipe pile welding machine shown in Figure 1 viewed in the direction indicated by arrow A.

[0023] Figure 3 is a perspective view of the pipe pile welding machine according to the first embodiment of the present invention from another angle.

[0024] Figure 4 is a diagram showing the state of the pipe pile welding machine shown in Figure 3 after the reinforcing bar mold has been removed from the through-channel of the welding machine frame.

[0025] Figure 5 is a perspective view of the rebar threading mold in the pipe pile welding machine according to the first embodiment of the present invention.

[0026] Figure 6 is a three-dimensional view of the threading mold shown in Figure 5 from another angle.

[0027] Figure 7 is a plan view of the rib-threading mold shown in Figure 6, viewed in the opposite direction to arrow A.

[0028] Figure 8 is an internal view of the threading mold shown in Figure 7 after it has been cut along the BB line.

[0029] Figure 9 is a perspective view of the pipe pile welding machine according to the second embodiment of the present invention.

[0030] Figure 10 is a diagram showing the state of the pipe pile welding machine shown in Figure 9 after the reinforcing bar mold has been removed from the through-channel of the welding machine frame. Detailed Implementation

[0031] To illustrate the technical content and structural features of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0032] Please refer to Figures 1 to 4. The pipe pile welding machine 100 of the first embodiment of the present invention includes a welding frame 10, a rebar-threading mold 20, a base 30, a motor 40, a gear ring 50, a sprocket 60, and a welding mechanism 70. The lower end of the welding frame 10 is fixed to the base 30, and the base 30 provides support for the welding frame 10. The welding frame 10 and the base 30 are fixed by welding or by bolts and nuts, but are not limited thereto. The welding frame 10 has a through channel 11. Optionally, as an example in Figures 1, 3, and 4, the through channel 11 is located above the base 30 and runs through the welding frame 10 along the rebar-threading direction (i.e., the direction indicated by arrow A). The through channel 11 is a circular channel to facilitate the manufacturing and processing of the through channel 11 on the welding frame 10. Of course, depending on actual needs, the through channel 11 can also be a polygonal channel or an elliptical channel, etc., and is not limited to what is shown in Figure 2.

[0033] Meanwhile, the motor 40 is fixed on the base 30, and the sprocket 60 is fixedly mounted on the output end of the motor 40; the gear ring 50 is rotatably mounted in the through channel 11, and the gear ring 50 is also assembled and connected to the welding frame 10 to meet the requirement that the gear ring 50 can rotate relative to the welding frame 10, and the gear ring 50 is connected to the sprocket 60 through a chain; the welding mechanism 70 is located outside the through channel 11 and fixed at the gear ring 50 to meet the requirement that the welding mechanism 70 rotates 360 degrees with the gear ring 50; therefore, under the rotation of the sprocket 60 driven by the motor 40, the rotating sprocket 60 drives the gear ring 50 and the welding mechanism 70 to rotate 360 ​​degrees relative to the welding frame 10 through the chain, thereby meeting the operation requirements of the welding mechanism 70 for welding the steel cage. It should be noted that since the base 30, motor 40, gear ring 50, sprocket 60 and welding mechanism 70 are already known structures in the art, they will not be described in detail here. In addition, since the base 30, motor 40, gear ring 50, sprocket 60 and welding mechanism 70 are not the innovations of this application, the base 30, motor 40, gear ring 50, sprocket 60 and welding mechanism 70 described above cannot be regarded as essential technical features limiting this application.

[0034] Furthermore, referring to Figures 5 to 8, the threading mold 20 includes a conductive shaft 21 that is fitted into the through channel 11 with a clearance fit, and a fixing plate 22 located outside the through channel 11 and fixedly connected to the conductive shaft 21. The fixing plate 22 protrudes radially from the conductive shaft 21, and two rings of threading holes 221 arranged around the axis 211 of the conductive shaft 21 are formed on the radially protruding position of the fixing plate 22 (see Figure 5). The projection of the threading hole row 221 along the axial direction of the conductive shaft 21 (i.e., the direction indicated by arrow A and the opposite direction) is located within the projection of the through channel 11, as shown in Figure 2, so that the operator can insert or pull the conductive shaft 21 into or out of the through channel 11 of the roll welding machine frame 10 along the axial direction of the conductive shaft 21. 1. The fixing plate 22 also has an assembly connection part 222 located outside the through-hole row 221. The through-hole mold 20 is detachably assembled to the roll welding frame 10 through the assembly connection part 222, so that the through-hole mold 20 is detachable on the roll welding frame 10 and the assembly and disassembly are simple and quick. Of course, according to actual needs, the assembly connection part 222 and the roll welding frame 10 can also be made into a non-detachable assembly connection, for example, the assembly connection part 222 can be welded to the roll welding frame 10. Specifically, in Figures 1, 3 and 4, as an example, the roll welding mechanism 70 and the fixing plate 222 are arranged one in front of the other along the through-hole direction, such that the fixing plate 222 is located behind the roll welding frame 10 and covers the through-channel 11, and the roll welding mechanism 70 is located in front of the roll welding frame 10 and is located on the side of the through-channel 11 along the radial direction of the conductive shaft 21. More specifically, as follows:

[0035] As shown in Figures 3 to 7, the assembly connection 222 is located on opposite sides of the fixed plate 22, such as the left and right sides of the fixed plate 22 in Figures 3 to 7. The welding frame 10 provides fixed support to the fixed plate 22 from the left and right sides of the fixed plate 22, improving the stability between the fixed plate 22 and the welding frame 10. The projection of the assembly connection 222 along the axial direction of the conductive shaft 21 is located outside the projection of the through channel 11, so that the assembly connection 222 is offset outward relative to the through channel 11. The assembly connection 222 abuts against the welding frame 10 along the axial direction of the conductive shaft 21, thereby improving the fixing reliability between the fixed plate 22 and the welding frame 10. Specifically, as an example in Figures 3 to 7, each assembly connection part 222 is provided with an assembly connection hole 2221. Preferably, each assembly connection part 222 has two assembly connection holes 2221 arranged vertically to increase the connection points between each assembly connection part 222 and the roll welding frame 10. Of course, depending on actual needs, the number of assembly connection holes 2221 on each assembly connection part 222 can be other than that shown in Figures 3 to 7. A fastener, such as a screw, is inserted into the assembly connection hole 2221. Fasteners such as wires or bolts detachably connect the assembly connection 222 to the welding frame 10, so that the assembly connection 222 and the welding frame 10 abut against each other. With the help of the fasteners and the assembly connection holes 2221, the assembly and disassembly speed between the assembly connection 222 and the welding frame 10 can be further improved. By abutting against each other, the assembly connection 222 and the welding frame 10 increase the contact area between them, thereby further improving the stability between the fixing plate 22 and the welding frame 10. More specifically, as shown in Figures 4 and 5, as an example, the rear end faces of the left and right side walls 12 of the roll welding frame 10 each have an abutment surface 14. The abutment surface 14 is directly opposite the fixing plate 22 along the axial direction of the conductive shaft 21, so that the fixing plate 22 abuts against the abutment surface 14 along the axial direction of the conductive shaft 21. Of course, the position where the assembly connection part 222 and the roll welding frame 10 are engaged can also be other, such as the positions shown in Figures 9 and 10, and is not limited to those shown in Figures 4 and 5. It should be noted that when the fastener is selected as a screw, threaded holes 15 are correspondingly opened on the rear end faces of the left and right side walls 12 of the roll welding frame 10, so that the screws inserted in the assembly connection holes 2221 are threaded together with the threaded holes 15, thereby fixing the assembly connection part 222 and the roll welding frame 10 together; in addition, the abutment surface 14 can be, but is not limited to, a plane.

[0036] As shown in Figures 3 and 4, the roll welding frame 10 is also provided with a support and positioning structure 13 for supporting the assembly connection part 222. The support and positioning structure 13 supports and positions the assembly connection part 222 along the vertical direction of the roll welding frame 10. With the help of the support and positioning structure 13, the rib-piercing mold 20 can be quickly positioned in the desired installation position during the assembly of the rib-piercing mold 20 onto the roll welding frame 10, thus effectively improving the assembly speed and convenience of the rib-piercing mold 20 onto the roll welding frame 10. Specifically, in Figures 3 and 4, the support and positioning structure 13 is a barbed structure with the hook opening 131 facing upwards. The assembly connection part 222 is inserted into the barbed structure from the hook opening 131. During the assembly process, the positioning and support function of the fixing plate 22 can be completed by inserting the assembly connection part 222 downwards into the support and positioning structure 13. When disassembling the fixing plate 22, it is only necessary to move the assembly connection part 222 upwards out of the support and positioning structure 13. Therefore, the assembly and disassembly operation of the fixing plate 22 is more convenient and faster. It should be noted that, as described above, the assembly connection parts 222 are located on opposite left and right sides of the fixed plate 222. Correspondingly, the supporting and positioning structure 13 is provided by the left and right side walls 12 of the welding frame 10, preferably located at the rear end face of the left and right side walls 12. In addition, although the supporting and positioning structure 13 shown in Figures 3 and 4 is a hook structure with the hook facing upward, other structures with supporting and positioning functions such as pins can be selected according to actual needs, so it is not limited to what is shown in Figures 3 and 4. Furthermore, although the assembly connection parts 222 shown in Figures 3 to 7 are located on opposite left and right sides of the fixed plate 22, they can also be located on adjacent sides of the fixed plate 22, or on adjacent sides and opposite sides of the fixed plate 22, as long as the welding frame 10 can be assembled and connected with the assembly connection parts 222.

[0037] As shown in Figures 4 to 8, the threading mold 20 also includes threading discs 23 arranged axially along the conductive shaft 21 and spaced apart from the fixed plate 22. The fixed plate 22 is fixedly connected to the threading discs 23, and the fixed plate 22 supports the threading discs 23. Of course, depending on actual needs, the threading discs 23 can also be fixedly connected to the conductive shaft 21, or the threading discs 23 can be fixedly connected to both the fixed plate 22 and the conductive shaft 21. In addition, the threading discs 23 are provided with matching hole rows 231 aligned with the threading hole rows 221 along the axial direction of the conductive shaft 21. That is, in the aligned threading hole rows 221 and matching hole rows 231, the number of holes 2311 in the matching hole rows 231 is equal to the number of holes in the threading hole rows 221 and the number of holes 2311 in the matching hole rows 231. The number of through holes 2211 of 221 is the same, and the projection of the through plate 23 along the axial direction of the conductive shaft 21 is located within the projection of the through channel 11; so that the through plate 23 and the fixing plate 22 can support the ribs, effectively preventing the ribs inserted at the through plate mold 20 from twisting and deforming; so that the projection of the through plate 23 along the axial direction of the conductive shaft 21 is located within the projection of the through channel 11, ensuring that the through plate 23 can be installed into or pulled out of the through channel 11 along the axial direction of the conductive shaft 21, improving the ease of installation and disassembly. Specifically, to further ensure that the reinforcing bars can pass smoothly through the reinforcing bar mold 20 and to further prevent the reinforcing bars from twisting and deforming, as an example in Figures 4, 5, 6 and 8, the reinforcing bar mold 20 also includes a reinforcing bar guide tube 24 extending axially along the conductive shaft 21. One end of the reinforcing bar guide tube 24 is inserted into the matching hole row 231, specifically into the hole 2311 of the matching hole row 231, and the other end of the reinforcing bar guide tube 24 is inserted into the reinforcing bar hole row 221, specifically into the reinforcing bar hole 2211 of the reinforcing bar hole row 221. The axial projection of the reinforcing bar guide tube 24 along the conductive shaft 21 is located within the projection of the through channel 11, so as to ensure that the reinforcing bar guide tube 24 can be inserted into or pulled out of the through channel 11 along the axial direction of the conductive shaft 21. It should be noted that since the guide tube 24 is inserted into the hole 2311 and the through hole 2211, the number of the guide tube 24, the hole 2311 and the through hole 2211 are the same in the same circle; in addition, although the attached drawing shows two circles of through hole row 221 and matching hole row 231, it can be designed to be one circle or three circles according to actual needs.

[0038] As shown in Figures 5 and 8, the fixing plate 22 is also insulated from the conductive shaft 21. A central through hole 232 is provided in the middle of the through plate 23. The conductive shaft 21 is inserted into the central through hole 232 with a clearance fit, ensuring that the fit between the conductive shaft 21 and the through plate 23 is a clearance fit. With the clearance fit between the through plate 23 and the conductive shaft 21, the insulated fit between the conductive shaft 21 and the through plate 23 is simpler. Specifically, in Figure 8, as an example, the threading mold 20 also includes a conductive disk 25, an external conductive end 26, and an intermediate connecting bracket 27. The intermediate connecting bracket 27 is located between the threading disk 23 and the fixing plate 22. The intermediate connecting bracket 27 is also located outside the matching hole row 231. One end of the intermediate connecting bracket 27 is fixedly connected to the threading disk 23, and the other end of the intermediate connecting bracket 27 is fixedly connected to the fixing plate 22, so that the threading disk 23 is fixed together with the fixing plate 22 through the intermediate connecting bracket 27. The position of the conductive shaft 21 extending out of the intermediate through hole 232 is fixedly connected to the conductive disk 25, and the external conductive end 26 is fixedly connected to the position of the conductive shaft 21 adjacent to the fixing plate 22, so that the conductive path can be effectively shortened by means of the conductive disk 25 and the external conductive end 26. The conductive disk 25 and the intermediate connecting bracket 27 are also projected along the axial direction of the conductive shaft 21 within the projection of the through channel 11, so as to ensure that the conductive disk 25 and the intermediate connecting bracket 27 can be inserted into or pulled out of the through channel 11 along the axial direction of the conductive shaft 21. More specifically, in Figure 8, as an example, the conductive disk 25 is fixedly connected to the front end of the conductive shaft 21 via flange 251, and the rear end of the conductive shaft 21 is fixedly connected to the fixing plate 22 via flange 252, and an insulating gasket 253 is provided between flange 252 and fixing plate 22; thus, the reliability of the assembly and disassembly between the conductive shaft 21 and fixing plate 22, as well as the reliability of the assembly and disassembly between the conductive disk 25 and conductive shaft 21, is improved by means of flange 251 and flange 252.

[0039] Referring to the accompanying drawings, the assembly and disassembly process of the threading mold 20 on the roll welding machine frame 10 is described as follows: When assembling the threading mold 20, which is removed as shown in Figure 4, onto the roll welding machine frame 10, first move the threading mold 20 to a position opposite to the through channel 11 along the axial direction of the conductive shaft 21, and ensure that the assembly connection part 222 in the threading mold 20 is located above the support positioning structure 13; then, move the threading mold 20 into the through channel 11 in the direction indicated by arrow A until the assembly connection part 222 engages with the abutment surface 14; then, slide the threading mold 20 downwards, so that the assembly connection part 222 is engaged in the support positioning structure 13, and ensure that the assembly connection hole 2221 is aligned with the threaded hole 15; finally, pass the fastener through the assembly connection hole 2221 and thread it into the threaded hole 15, thereby achieving the purpose of detachably fixing the threading mold 20 to the roll welding machine frame 10 through the assembly connection part 222.

[0040] During disassembly, first loosen the threaded connection between the fastener and the threaded hole 15, so that the fastener moves away from the threaded hole 15; then, move the threading mold 20 upward, so that the assembly connection part 222 moves away from the support positioning structure 13; after the assembly connection part 222 moves away from the support positioning structure 13, then move the threading mold 20 out of the through channel 11 of the roll welding frame 10 in the opposite direction of arrow A, so as to achieve the purpose of disassembling the threading mold 20 from the roll welding frame 10.

[0041] It should be noted that, as shown in Figures 3 and 4, since the piercing mold 20 needs to move upward a certain distance relative to the welding machine frame 10 during disassembly so that the assembly connection part 222 can move out of the support positioning structure 13, the piercing mold 20 can move out of the welding machine frame 10 along the axial direction of the conductive shaft 21. Therefore, the gap between the piercing mold 20 and the through channel 11 must meet the requirement that the piercing mold 20 moves upward a certain distance relative to the welding machine frame 10.

[0042] Please refer to Figures 9 and 10. The structure of the pipe pile welding machine 100' in the second embodiment of the present invention is basically the same as that of the pipe pile welding machine 100 in the first embodiment, with the following differences:

[0043] First, in the second embodiment, the assembly connection portion 222' of the threading mold 20' abuts against the roll welding frame 10 along the axial and radial directions of the conductive shaft 21; while in the first embodiment, the assembly connection portion 222 abuts against the roll welding frame 10 along the axial direction of the conductive shaft 21.

[0044] Secondly, in the second embodiment, the assembly connection part 222' abuts against the rear end face of the left and right side walls 12 of the roll welding frame 10 along the axial direction of the conductive shaft 21. The assembly connection part 222' also abuts against the side surfaces of the left and right side walls 12 of the roll welding frame 10 along the radial direction of the conductive shaft 21. That is, the rear end face and side surface of the left and right side walls 12 are each provided with an abutment surface 14. This design can further increase the contact area between the fixing plate 22 and the roll welding frame 10, thereby improving stability. In the first embodiment, the assembly connection part 222 only abuts against the roll welding frame 10 along the axial direction of the conductive shaft 21.

[0045] Third, in the second embodiment, a support and positioning structure 13 is provided on the side surfaces of the left and right side walls 12; while in the first embodiment, a support and positioning structure 13 is provided on the rear end surfaces of the left and right side walls 12.

[0046] Fourth, in the second embodiment, the assembly connection 222 is L-shaped; while in the first embodiment, the assembly connection 222 is I-shaped.

[0047] Fifth, in the second embodiment, the assembly connection hole 2221 is located on the side of the assembly connection portion 222' facing the left and right side walls 12; in the first embodiment, the assembly connection hole 2221 is located on the rear end face of the assembly connection portion 222 facing the left and right side walls 12.

[0048] Apart from the differences mentioned above, everything else is the same as in the first embodiment, so it will not be repeated here.

[0049] In summary, depending on actual needs, the assembly connection part 222' (222) can also abut against the roll welding frame 10 along the radial direction of the conductive shaft 21, so it is not limited to the above description.

[0050] Compared with the prior art, since the fixed plate 22 has at least one ring of through holes 221 arranged around the axis 211 of the conductive shaft 21 at the position where it protrudes radially from the conductive shaft 21, and the fixed plate 22 also has an assembly connection part 222 located outside the through hole 221, the through hole mold 20 (20') is assembled to the welding frame 10 of the pipe pile welding machine 100 by means of the assembly connection part 222 (222') located outside the through hole 221. In this way, the assembly connection part 222 (222') can avoid the influence of the circumferentially evenly distributed arrangement of the through hole 221 on the fixed plate 22, so that the through holes 2211 in the through hole 221 can achieve the purpose of circumferentially evenly distributed arrangement.

[0051] Furthermore, when the assembly connection 222 (222') and the roll welding frame 10 are detachably assembled, the rib-piercing mold 20 (20') can be inserted into or removed from the roll welding frame 10 along the axial direction of the conductive shaft 21, thereby making the replacement of the rib-piercing mold 20 (20') quick and convenient.

[0052] To further clarify, for the pipe pile welding machine 100 of the first embodiment, the center lines in Figures 3, 4, and 6 serve as the dividing lines for the assembly connection 222. The left portion of the fixing plate 22, divided by the left center line, is positioned as the left assembly connection 222, and the right portion of the fixing plate 22, divided by the right center line, is defined as the right assembly connection 222. Similarly, for the pipe pile welding machine 100 of the second embodiment, the center lines in Figures 9 and 10 serve as the dividing lines for the assembly connection 222'. The left portion of the fixing plate 22, divided by the left center line, is positioned as the left assembly connection 222', and the right portion of the fixing plate 22, divided by the right center line, is defined as the right assembly connection 222'. It is understood that the position of the dividing line can be other positions according to actual needs, and is not limited to those shown in Figures 3, 4, 6, 9, and 10. Additionally, the direction indicated by arrow A in the figures and the opposite direction are the axial direction of the conductive shaft 21.

[0053] The above-disclosed examples are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are within the scope of the present invention.

Claims

1. A pipe pile roll welding machine, comprising a roll welding frame, a base, and a rebar threading mold, wherein the lower end of the roll welding frame is fixed to the base, the roll welding frame has a through-channel, and the rebar threading mold includes a conductive shaft that is spaced and inserted through the through-channel, characterized in that... The threading mold further includes a fixing plate located outside the through channel and fixedly connected to the conductive shaft. The fixing plate protrudes radially from the conductive shaft, and at least one ring of threading holes arranged around the axis of the conductive shaft is formed at the radially protruding position of the fixing plate. The axial projection of the threading hole ring along the conductive shaft is located within the projection of the through channel. The fixing plate also has an assembly connection portion located outside the threading hole ring. The threading mold is assembled to the roll welding frame through the assembly connection portion.

2. The pipe pile welding machine according to claim 1, characterized in that, The assembly connection is detachably assembled to the roll welding frame. The assembly connection is located on opposite or adjacent sides of the fixed plate. The projection of the assembly connection along the axial direction of the conductive shaft is outside the projection of the through channel. The assembly connection abuts against the roll welding frame along the radial and / or axial direction of the conductive shaft.

3. The pipe pile welding machine according to claim 2, characterized in that, Each of the assembly connection parts is provided with an assembly connection hole, and a fastener is inserted through the assembly connection hole. The fastener detachably assembles the assembly connection part and the roll welding frame together, so that the assembly connection part and the roll welding frame abut against each other.

4. The pipe pile welding machine according to any one of claims 1 to 3, characterized in that, The roll welding machine frame is also provided with a support and positioning structure for supporting the assembly connection part. The support and positioning structure supports and positions the assembly connection part along the vertical direction of the roll welding machine frame.

5. The pipe pile welding machine according to claim 4, characterized in that, The supporting and positioning structure is a barbed structure with the hook opening facing upwards, and the assembly connection part is inserted into the barbed structure from the hook opening; or, the supporting and positioning structure is a pin structure.

6. The pipe pile welding machine according to claim 2 or 3, characterized in that, The assembly connection part is in the shape of "I" or "L".

7. The pipe pile welding machine according to claim 1, characterized in that, The threading mold further includes threading discs arranged spaced apart from the fixed plate along the axial direction of the conductive shaft. At least one of the fixed plate and the conductive shaft is fixedly connected to the threading discs. The threading discs are provided with matching hole rows aligned with the threading hole rows along the axial direction of the conductive shaft. The projection of the threading discs along the axial direction of the conductive shaft is located within the projection of the through channel.

8. The pipe pile welding machine according to claim 7, characterized in that, The threading mold further includes a guide tube extending axially along the conductive axis. One end of the guide tube passes through the matching hole row, and the other end of the guide tube passes through the threading hole row. The axial projection of the guide tube along the conductive axis is located within the projection of the through channel.

9. The pipe pile welding machine according to claim 7, characterized in that, The threading plate is fixedly connected to the fixing plate, and the fixing plate is also insulated from the conductive shaft. A central through hole is provided in the middle of the threading plate, and the conductive shaft is inserted into the central through hole with a clearance fit.

10. The pipe pile welding machine according to claim 9, characterized in that, The threading mold further includes a conductive disk, an external conductive end, and an intermediate connecting bracket. The intermediate connecting bracket is located between the threading disk and the fixed plate, and is also located outside the matching hole row. One end of the intermediate connecting bracket is fixedly connected to the threading disk, and the other end of the intermediate connecting bracket is fixedly connected to the fixed plate. The conductive shaft extends out of the intermediate through hole and is fixedly connected to the conductive disk. The external conductive end is fixedly connected to the conductive shaft near the fixed plate. The axial projections of the conductive disk and the intermediate connecting bracket along the conductive shaft are each located within the projection of the through channel.

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