Unwinding device for pipe making machine

Abstract

The invention relates to an unwinding device for a pipe making machine. The problems that in the prior art, unwinding equipment is difficult to carry out accurate unwinding pretreatment, and the percent of pass of unwound steel materials during pipe manufacturing is easily affected are solved. The device comprises a material unwinding and cutting mechanism arranged at the feeding end, a plurality of material milling and shaping assemblies are arranged at one end of the material unwinding and cutting mechanism, unwinding and tensioning mechanisms are arranged at the ends, away from the material unwinding and cutting mechanism, of the material milling and shaping assemblies, and one ends of the unwinding and tensioning mechanisms are connected with positioning and edge grinding assemblies; an unwinding platform is arranged at the end, away from the unwinding pressing adjusting mechanism, of the positioning edge grinding assembly. The device has the advantages that steel materials can be pretreated in the unwinding process, the specification accuracy of the steel materials during pipe manufacturing is ensured, and the pipe manufacturing qualification rate is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe making equipment, and in particular to an unwinding device for a pipe making machine. Background Art

[0002] Tube making machines, also known as stainless steel welded pipe machines, are categorized by material type into high-frequency tube making machines and stainless steel tube making machines. They are primarily used for decorative and industrial stainless steel pipes. Existing tube making machines require manual installation and fixation of the unwinding drum when unwinding the raw material branch sheet, making installation and removal inconvenient. Furthermore, the unwinding sheet is prone to wrinkling, affecting the machine's normal tube production. Furthermore, the unwinding equipment used in existing tube making machines makes it difficult to accurately pre-treat the steel material during unwinding, which can affect the yield of the unwinded steel during tube production.

[0003] To address the shortcomings of existing technologies, researchers have conducted extensive research and proposed various solutions. For example, a Chinese patent document discloses a pipe unwinder for a pipe making machine [CN202120824530.3]. The unwinder comprises a housing with a drive mechanism fixedly mounted therein, and a clamping device fixedly mounted on the top of the housing. The drive mechanism drives the clamping device. When the device is in use as a whole, the drive mechanism drives the clamping device to open and close, thereby enabling the clamping device to load and unload the pipe.

[0004] The above solution solves the problem in the prior art that the unwinding drum is inconvenient to disassemble and assemble and is prone to wrinkles to a certain extent, but the solution still has many shortcomings, such as: it is difficult to accurately unwind the steel material, which easily leads to a low pass rate of the unwound steel material during pipe making. Summary of the Invention

[0005] The object of the present invention is to provide a reeling device for a pipe making machine in view of the above problems.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a unwinding device for a pipe making machine, comprising a material unwinding and cutting mechanism arranged at the feed end, a plurality of material grinding and shaping components being provided at one end of the material unwinding and cutting mechanism, an unwinding tensioning mechanism being provided at the end of the material grinding and shaping component away from the material unwinding and cutting mechanism, and a positioning edging component being connected to one end of the unwinding tensioning mechanism, and an unwinding platform being provided at the end of the positioning edging component away from the unwinding clamping adjustment mechanism.

[0007] In the above-mentioned unwinding device for a pipe making machine, the material unwinding and cutting mechanism includes a cutting knife frame, an unwinding frame is provided on one side of the cutting knife frame, a sliding and adjusting slide is provided in the unwinding frame, an upper sliding roller and a lower positioning roller are symmetrically provided in the adjusting slide, a lifting and adjusting screw is connected to the upper end of the adjusting slide, and the lifting and adjusting screw is threadedly connected to the unwinding frame, and a clamping adjustment rod is provided on the inner side of the lifting and adjusting screw, which is threadedly connected to the end of the upper sliding roller and can drive the upper sliding roller to slide up and down in the adjusting slide to adjust the distance between the upper sliding roller and the lower positioning roller.

[0008] In the above-mentioned unwinding device for a pipe making machine, a cutting knife holder is provided with a sliding steel material positioning and pressing seat, and both ends of the steel material positioning and pressing seat are driven to rise and fall by a synchronous lifting motor arranged on the cutting knife holder. A cutting clamping gap is formed between the steel material positioning and pressing seat and the end of the cutting knife holder, and the bottom of the cutting knife holder is connected to a cutting knife rod through a knife holder lifting motor, and a cutting tool is provided on the upper end of the cutting knife rod. A cutting clearance gap is provided on the steel material positioning and pressing seat for the cutting tool to pass through, and cutting limit parts for limiting the cutting knife holder are provided on both sides of the bottom of the steel material positioning and pressing seat.

[0009] In the above-mentioned unwinding device for a pipe making machine, the material grinding and shaping assembly includes a lifting grinding and milling assembly arranged in the middle, and shaping assemblies are provided on both sides of the lifting grinding and milling assembly, and the grinding gap of the material grinding and milling shaping assembly gradually decreases from one end to the other end of the material unwinding and cutting mechanism.

[0010] In the above-mentioned unwinding device for a pipe making machine, the lifting and milling assembly includes a milling frame, on which a symmetrically arranged milling cutter seat is slidably provided. The milling cutter seats are respectively slidably positioned in the milling frame by lifting rods. A threaded gear sleeve is provided on the upper end of the lifting rod, and the threaded gear sleeve is connected to the milling lifting motor through a linkage gear. A milling cutter shaft is swingably passed through the two milling cutter seats, and a milling tool is provided on the milling cutter shaft. The milling cutter seat is provided with a swinging adjustment groove for the milling tool to pass through, and a material passing gap is formed between the milling tools for the material to pass through, and locking parts for fixing the milling angle of the milling tool are provided at both ends of the milling cutter seat.

[0011] In the above-mentioned unwinding device for a pipe making machine, the shaping assembly includes a shaping frame, which is provided with a shaping seat symmetrically arranged in the upper and lower directions, and a sliding shaping pressure block is provided on the opposite side of the shaping seat. The sliding shaping pressure block is connected to a linkage rod body, and the linkage rod body is connected to the shaping lifting motor arranged on the shaping seat through a driving gear, and the sliding shaping pressure block is provided with a corresponding discharge notch on the opposite side.

[0012] In the above-mentioned unwinding device for a pipe making machine, the unwinding tensioning mechanism includes a tensioning assembly frame, a roller frame is slidingly provided on the tensioning assembly frame, and the roller frame is provided with tensioning rollers symmetrically arranged in the upper and lower directions. The roller frame is driven by a roller frame lifting motor arranged at the upper end of the tensioning assembly frame, and a reduction motor is provided at the output end of the roller frame lifting motor, and the roller frame lifting motors located on the same roller frame operate at the same frequency.

[0013] In the above-mentioned unwinding device for a pipe making machine, the positioning and edging assembly includes an edging frame, and edging cutter discs are respectively provided on both sides of the edging frame, which are arranged up and down. The edging cutter discs are connected to the edging motor through a linkage cross bar, and the linkage cross bar is provided with a separation bearing. The separation bearing is connected to the edging lifting motor through a longitudinally arranged linkage lifting rod. An edging baffle is provided on the linkage cross bar and on the side of the edging cutter disc away from the material.

[0014] In the above-mentioned unwinding device for a pipe making machine, lifting screws are provided on both sides of the edge grinding frame, and a fixed edge drive motor is provided on the lifting screws. The output end of the fixed edge drive motor is connected to a fixed edge pressure plate, and the fixed edge pressure plate and the fixed edge drive motor are driven by gears.

[0015] In the above-mentioned unwinding device for a pipe making machine, a sliding alignment frame is provided at one end of the unwinding platform close to the positioning and edging assembly, and alignment feed conveyor rollers and alignment discharge conveyor rollers are provided on both sides of the sliding alignment frame. A lifting feed lifting roller is provided at one end of the alignment feed conveyor roller, and an alignment conveyor frame is provided at one end of the alignment discharge conveyor roller.

[0016] Compared with the existing technology, the advantages of the present invention are: it can accurately cut and unwind the steel material to ensure the unwinding size, and realize detailed pre-processing of the steel material such as shaping, edging, tightening and edge cutting, ensuring that the unwinding steel material meets the pipe making requirements and improves the pipe making quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a side view of the rough milling mechanism structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the material unwinding and cutting mechanism in the invention;

[0019] Figure 3 It is a structural diagram of the steel material positioning and pressing seat in the invention;

[0020] Figure 4 It is a schematic diagram of the structure of the material grinding and shaping component in the invention;

[0021] Figure 5 It is a schematic diagram of the structure of the lifting milling assembly in the invention;

[0022] Figure 6 It is a schematic diagram of the unwinding and tensioning mechanism in the invention;

[0023] Figure 7 It is a schematic diagram of the partial structure of the unwinding and tensioning mechanism in the invention;

[0024] Figure 8 It is a schematic diagram of the structure of the lifting milling assembly in the invention;

[0025] Figure 9 It is a schematic diagram of the structure of the positioning edge grinding component in the invention;

[0026] In the figure: material unwinding and cutting mechanism 1, cutting tool holder 11, unwinding frame 12, adjusting slide 121, upper sliding roller 122, lower positioning roller 123, lifting and adjusting screw 124, pressing and adjusting rod 125, steel material positioning and pressing seat 13, synchronous lifting motor 14, cutting clamping gap 15, tool holder lifting motor 16, cutting tool rod 17, cutting clearance gap 18, cutting limiter 19, material grinding and shaping assembly 2, lifting and grinding assembly 21, grinding and shaping frame 211, grinding and shaping cutter seat 212, swing adjustment slot 2121, material feeding gap 2122, locking member 2123, lifting rod 213, threaded gear sleeve 214, grinding and shaping cutter 215, linkage gear 216, grinding and shaping lifting motor 217, grinding and shaping cutter shaft 218, shaping assembly 22, shaping frame 2 21. Shaping seat 222, sliding shaping pressure block 223, linkage rod body 224, driving gear 225, shaping lifting motor 226, discharge notch 227, unwinding tensioning mechanism 3, tensioning assembly frame 31, roller frame 32, tensioning roller 33, roller frame lifting motor 34, reduction motor 35, positioning edge grinding component 4, edge grinding frame 41, lifting screw 411, fixed edge drive motor 412, fixed edge pressure plate 413, gear 414, edge grinding cutter disc 42, linkage cross bar 43, edge grinding motor 44, separation bearing 45, linkage lifting rod 46, edge grinding lifting motor 47, edge grinding baffle 48, unwinding platform 5, sliding alignment frame 51, alignment feed conveyor roller 52, alignment discharge conveyor roller 53, lifting feed lifting roller 54, alignment conveyor frame 55. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1-9 As shown, a unwinding device for a pipe making machine includes a material unwinding and cutting mechanism 1 arranged at the feed end, a plurality of material grinding and shaping components 2 are provided at one end of the material unwinding and cutting mechanism 1, an unwinding tensioning mechanism 3 is provided at the end of the material grinding and shaping component 2 away from the material unwinding and cutting mechanism 1, and a positioning edging component 4 is connected to one end of the unwinding tensioning mechanism 3, and an unwinding platform 5 is provided at the end of the positioning edging component 4 away from the unwinding clamping adjustment mechanism 3.

[0029] Among them, the material unwinding and cutting mechanism 1 includes a cutting knife frame 11, a unwinding frame 12 is provided on one side of the cutting knife frame 11, a sliding adjustment slide 121 is provided in the unwinding frame 12, an upper sliding roller 122 and a lower positioning roller 123 are symmetrically provided in the adjusting slide 121, and a lifting adjustment screw 124 is connected to the upper end of the adjusting slide 121, and the lifting adjustment screw 124 is threadedly connected to the unwinding frame 12, and the lifting adjustment screw 124 is provided with a clamping adjustment rod 125 on the inner side of the circumference, which is threadedly connected to the end of the upper sliding roller 122 and can drive the upper sliding roller 122 to slide up and down in the adjusting slide 121, thereby adjusting the distance between the upper sliding roller 122 and the lower positioning roller 123.

[0030] During unwinding, the overall position of the upper sliding roller 122 and the lower positioning roller 123 can be adjusted by lifting and adjusting the screw 124, so as to cooperate with the cutting tool 17 to press during cutting. Secondly, according to the thickness of the steel material, the distance between the upper sliding roller 122 and the lower positioning roller 123 can be adjusted by the pressing adjustment rod 125 to adapt to the unwinding of steel materials of greater thickness.

[0031] Obviously, the cutting tool holder 11 is slidingly provided with a steel material positioning and pressing seat 13, and the two ends of the steel material positioning and pressing seat 13 are lifted and lowered by a synchronous lifting motor 14 arranged on the cutting tool holder 11. A cutting clamping gap 15 is formed between the steel material positioning and pressing seat 13 and the end of the cutting tool holder 11, and the bottom of the cutting tool holder 11 is connected to a cutting rod 17 through a knife seat lifting motor 16. A cutting tool 17 is provided at the upper end of the cutting tool rod 17, and a cutting clearance gap 18 is provided on the steel material positioning and pressing seat 13 for the cutting tool 17 to pass through, and cutting limit parts 19 for limiting the cutting tool holder 11 are provided on both sides of the bottom of the steel material positioning and pressing seat 13.

[0032] When cutting steel, the synchronous lifting motor 14 drives the steel positioning and pressing seat 13 to press the steel, and then the knife seat lifting motor 16 drives the cutting tool rod 17 with a cutting tool 17 at the end to rise through the cutting clearance gap 18 to accurately cut the steel.

[0033] Furthermore, the material grinding and shaping component 2 includes a lifting grinding and shaping component 21 arranged in the middle, and shaping components 22 are provided on both sides of the lifting grinding and shaping component 21, and the grinding gap 2122 of the material grinding and shaping component 2 gradually decreases from one end to the other end of the material unwinding and cutting mechanism 1.

[0034] Furthermore, the lifting milling assembly 21 includes a milling frame 211, on which a symmetrically arranged milling cutter seat 212 is slidingly provided. The milling cutter seat 212 is slidably positioned in the milling frame 211 through a lifting rod 213. A threaded gear sleeve 214 is provided on the upper end of the lifting rod 213, and the threaded gear sleeve 214 is connected to the milling lifting motor 217 through a linkage gear 216. A milling cutter shaft 218 is swingably passed through the two milling cutter seats 212, and a milling tool 215 is provided on the milling cutter shaft 218. The milling cutter seat 212 is provided with a swinging adjustment groove 2121 for the milling tool 215 to pass through. A material gap 2122 is formed between the milling tools 215 for material to pass through, and locking parts 2123 are provided at both ends of the milling cutter seat 212 for fixing the milling angle of the milling tool 215.

[0035] According to the burr details of the outer wall of the steel material, the height position of the milling cutter seat 212 is adjusted by the milling lifting motor 217, and the milling angle of the milling tool 215 in the swing adjustment slot 2121 is adjusted to achieve flexible milling.

[0036] Specifically, the shaping frame 221 is provided with a shaping seat 222 which is symmetrically arranged in the upper and lower parts, and a sliding shaping pressure block 223 is provided on the opposite side of the shaping seat 222. The sliding shaping pressure block 223 is connected with a linkage rod body 224, and the linkage rod body 224 is connected to the shaping lifting motor 226 arranged on the shaping seat 222 through a driving gear 225. The sliding shaping pressure block 223 is provided with a corresponding discharge notch 227 on the opposite side.

[0037] The sliding shaping block 223 can be used to grind the outer surface of the steel material to ensure flatness, thereby improving the key outer edge flatness during pipe making.

[0038] More specifically, the unwinding and tensioning mechanism 3 includes a tensioning assembly frame 31, on which a roller frame 32 is slidingly provided, and on which tensioning rollers 33 are symmetrically arranged in the upper and lower directions. The roller frame 32 is driven by a roller frame lifting motor 34 arranged at the upper end of the tensioning assembly frame 31, and a reduction motor 35 is provided at the output end of the roller frame lifting motor 34, and the roller frame lifting motors 34 located on the same roller frame 32 operate at the same frequency.

[0039] The tensioning rollers 33 on each tensioning assembly frame 31 have a certain degree of compression, and the height of the roller frame 32 is adjustable, so as to be used for tensioning and compressing the steel material.

[0040] In detail, the positioning and edging assembly 4 includes an edging frame 41, and edging cutter discs 42 are respectively provided on both sides of the edging frame 41, and the edging cutter discs 42 are connected to the edging motor 44 through a linkage cross bar 43, and the linkage cross bar 43 is provided with a separation bearing 45, and the separation bearing 45 is connected to the edging lifting motor 47 through a longitudinally arranged linkage lifting rod 46. An edging baffle 48 is provided on the linkage cross bar 43 and on the side of the edging cutter disc 42 away from the material.

[0041] The positioning and edging assembly 4 is mainly used to cut and grind both sides of the steel material to ensure that the width specification of the steel material meets the requirements of pipe making.

[0042] Preferably, lifting screws 411 are provided on both sides of the edge grinding frame 41, and a fixed edge driving motor 412 is provided on the lifting screws 411. The output end of the fixed edge driving motor 412 is connected to a fixed edge pressure plate 413, and the fixed edge pressure plate 413 and the fixed edge driving motor 412 are driven by a gear 414.

[0043] The edge pressing plate is used to press the two sides of the steel material up and down to facilitate edge grinding.

[0044] In addition, a sliding alignment frame 51 is provided at one end of the unwinding platform 5 close to the positioning edging assembly 4, and alignment feed conveyor rollers 52 and alignment discharge conveyor rollers 53 are provided on both sides of the sliding alignment frame 51. A lifting feed lifting roller 54 is provided at one end of the alignment feed conveyor roller 52, and an alignment conveyor frame 55 is provided at one end of the alignment discharge conveyor roller 53.

[0045] To sum up, the principle of this embodiment is that: when unwinding, the steel material is cut to a fixed length by the material unwinding and cutting mechanism 1, and the outer wall of the steel material is milled by the lifting and milling assembly 21 to remove burrs, and the outer wall of the steel material is shaped by the shaping assembly 22 to ensure the horizontal state of the outer wall. Secondly, the steel material in transit is pressed by the unwinding and tightening mechanism to avoid looseness. Finally, the edges on both sides of the steel material are cut and polished by the positioning and grinding assembly 4 to ensure the accuracy of the width specifications of the steel material, thereby improving the quality of pipe making.

[0046] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

[0047] Although this article uses more material unwinding and cutting mechanism 1, cutting tool holder 11, unwinding frame 12, adjusting slide 121, upper sliding roller 122, lower positioning roller 123, lifting and adjusting screw 124, pressing and adjusting rod 125, steel material positioning and pressing seat 13, synchronous lifting motor 14, cutting clamping gap 15, tool holder lifting motor 16, cutting tool rod 17, cutting clearance gap 18, cutting limit part 19, material grinding and shaping component 2, lifting and grinding component 21, grinding and milling frame 211, grinding and milling cutter seat 212, swing adjustment slot 2121, material passing gap 2122, locking member 2123, lifting rod 213, threaded gear sleeve 214, grinding and milling tool 215, linkage gear 216, grinding and milling lifting motor 217, grinding and milling cutter shaft 218, shaping component 22, shaping frame 221, shaping seat 222, sliding shaping block 223, linkage rod body 224, driving gear 225, shaping lifting motor 226, discharge notch 227, unwinding tensioning mechanism 3, tensioning assembly frame 31, roller frame 32, tensioning roller 33, roller frame lifting motor 34, reduction motor 35, positioning edge grinding component 4, edge grinding frame 41, lifting screw 411, fixed edge drive motor 412, fixed edge pressure plate 413, gear 414, edge grinding cutter disc 42, linkage cross bar 43, edge grinding motor 44, separation bearing 45, linkage lifting rod 46, edge grinding lifting motor 47, edge grinding baffle 48, unwinding platform 5, sliding alignment frame 51, alignment feed conveyor roller 52, alignment discharge conveyor roller 53, lifting feed lifting roller 54, alignment conveyor frame 55 and other terms, but does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the present invention; any additional limitation construed in them would be contrary to the spirit of the present invention.

Claims

1. A reeling device for a pipe making machine, comprising a material reeling and cutting mechanism (1) arranged at a feeding end, characterized in that: A plurality of material grinding and shaping components (2) are provided at one end of the material unwinding and cutting mechanism (1); an unwinding tensioning mechanism (3) is provided at one end of the material unwinding and cutting mechanism (1); and a positioning edge grinding component (4) is connected to one end of the unwinding tensioning mechanism (3); and an unwinding platform (5) is provided at one end of the positioning edge grinding component (4) away from the unwinding clamping adjustment mechanism (3).

2. The unwinding device for a pipe making machine according to claim 1, characterized in that: The material unwinding and cutting mechanism (1) comprises a cutting blade frame (11), a unwinding frame (12) is arranged on one side of the cutting blade frame (11), a sliding adjustment slide (121) is arranged inside the unwinding frame (12), an upper sliding roller (122) and a lower positioning roller (123) are symmetrically arranged inside the adjusting slide (121), a lifting adjustment screw (124) is connected to the upper end of the adjusting slide (121), and the lifting adjustment screw (124) is threadedly connected to the unwinding frame (12), and a clamping adjustment rod (125) is arranged on the inner side of the lifting adjustment screw (124) which is threadedly connected to the end of the upper sliding roller (122) and can drive the upper sliding roller (122) to slide up and down in the adjusting slide (121) so as to adjust the distance between the upper sliding roller (122) and the lower positioning roller (123).

3. The unwinding device for a pipe making machine according to claim 2, characterized in that: The cutting tool holder (11) is slidably provided with a steel material positioning and pressing seat (13), and the two ends of the steel material positioning and pressing seat (13) are lifted and driven by a synchronous lifting motor (14) arranged on the cutting tool holder (11). A cutting clamping gap (15) is formed between the steel material positioning and pressing seat (13) and the end of the cutting tool holder (11), and the bottom of the cutting tool holder (11) is connected to a cutting tool rod (17) through a tool holder lifting motor (16). A cutting tool (17) is arranged at the upper end of the cutting tool rod (17), and a cutting clearance gap (18) is arranged on the steel material positioning and pressing seat (13) for the cutting tool (17) to pass through, and cutting limit parts (19) for limiting the cutting tool holder (11) are arranged on both sides of the bottom of the steel material positioning and pressing seat (13).

4. The unwinding device for a pipe making machine according to claim 1, characterized in that: The material grinding and shaping component (2) comprises a lifting grinding and shaping component (21) arranged in the middle, and shaping components (22) are arranged on both sides of the lifting grinding and shaping component (21), and the grinding gap (2122) of the material grinding and shaping component (2) gradually decreases from one end of the material unwinding and cutting mechanism (1) to the other end.

5. The unwinding device for a pipe making machine according to claim 4, characterized in that: The lifting milling assembly (21) comprises a milling frame (211), on which a milling cutter seat (212) is slidably arranged in a symmetrical manner, and the milling cutter seat (212) is slidably positioned in the milling frame (211) through a lifting rod (213), and a threaded tooth sleeve (214) is provided at the upper end of the lifting rod (213), and the threaded tooth sleeve (214) is connected to a milling lifting motor (217) through a linkage gear (216). A milling cutter shaft (218) is swingably mounted on the milling cutter seat (212), and a milling cutter (215) is mounted on the milling cutter shaft (218). The milling cutter seat (212) is provided with a swing adjustment groove (2121) for the milling cutter (215) to pass through, and a material passing gap (2122) is formed between the milling cutters (215) for materials to pass through. Locking parts (2123) for fixing the milling angle of the milling cutter (215) are provided at both ends of the milling cutter seat (212).

6. The unwinding device for a pipe making machine according to claim 4, characterized in that: The shaping assembly (22) comprises a shaping frame (221), on which a shaping seat (222) is symmetrically arranged in an upper and lower manner, and a sliding shaping block (223) is provided on one side of the shaping seat (222) that is arranged opposite to the shaping seat, and a linkage rod body (224) is connected to the sliding shaping block (223), and the linkage rod body (224) is connected to a shaping lifting motor (226) arranged on the shaping seat (222) through a driving gear (225), and a corresponding discharge notch (227) is provided on one side of the sliding shaping block (223) that is arranged opposite to the shaping seat.

7. The unwinding device for a pipe making machine according to claim 1, characterized in that: The unwinding tensioning mechanism (3) comprises a tensioning assembly frame (31), a roller frame (32) is slidably provided on the tensioning assembly frame (31), and tensioning rollers (33) are symmetrically arranged in the upper and lower directions on the roller frame (32). The roller frame (32) is driven by a roller frame lifting motor (34) arranged at the upper end of the tensioning assembly frame (31), and a reduction motor (35) is provided at the output end of the roller frame lifting motor (34), and the roller frame lifting motors (34) located on the same roller frame (32) operate at the same frequency.

8. The unwinding device for a pipe making machine according to claim 1, characterized in that: The positioning edge grinding component (4) comprises an edge grinding frame (41), and edge grinding discs (42) are respectively arranged up and down on both sides of the edge grinding frame (41), and the edge grinding disc (42) is connected to the edge grinding motor (44) through a linkage cross bar (43), and the linkage cross bar (43) is provided with a separation bearing (45), and the separation bearing (45) is connected to the edge grinding lifting motor (47) through a linkage lifting rod (46) arranged in the longitudinal direction, and an edge grinding baffle (48) is provided on the linkage cross bar (43) and located on the side of the edge grinding disc (42) away from the material.

9. The unwinding device for a pipe making machine according to claim 9, characterized in that: Lifting screws (411) are provided on both sides of the edge grinding frame (41), and a fixed edge driving motor (412) is provided on the lifting screws (411). The output end of the fixed edge driving motor (412) is connected to a fixed edge pressing plate (413), and the fixed edge pressing plate (413) and the fixed edge driving motor (412) are driven by a gear (414).

10. The unwinding device for a pipe making machine according to claim 1, characterized in that: The unwinding platform (5) is provided with a sliding alignment frame (51) at one end close to the positioning edge grinding component (4), and alignment feed conveying rollers (52) and alignment discharge conveying rollers (53) are provided on both sides of the sliding alignment frame (51), and a lifting feed lifting roller (54) is provided at one end of the alignment feed conveying roller (52), and an alignment conveying frame (55) is provided at one end of the alignment discharge conveying roller (53).

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