CN209773967U - Welded pipe production line - Google Patents

Abstract

The utility model discloses a welded tube production line, including steel band unwinding mechanism, base, extension mechanism, crimp mechanism, extrusion mechanism, joint closing mechanism, high frequency welding mechanism, sizing mechanism, scrape seam mechanism, its characterized in that: the extension mechanism, the edge bending mechanism, the extrusion mechanism, the joint closing mechanism, the high-frequency welding mechanism, the sizing mechanism and the joint scraping mechanism are sequentially arranged on the base from right to left along the advancing direction of the steel strip. Reasonable in design, compact structure realizes moreover that the mechanization has production efficiency height, product quality is good, low in labor strength, advantages such as operation safety.

Description

welded pipe production line

Technical Field

The utility model relates to the technical field of mechanical equipment, especially, relate to a welded tube production line.

Background

The steel pipe has extremely wide application in the industrial field, and the production method of the steel pipe at present is that the steel plate is rolled into a cylinder shape and then the seam is welded by a high-frequency welding method, so that the process is simple. However, in actual use, the steel pipes have various specifications, the adjustability of a conventional production line is poor, when the steel pipes with different specifications are produced, some equipment on the production line is required to be replaced, the operation is complicated, and meanwhile, production is stopped when the equipment is replaced, so that the production efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

an object of the utility model is to overcome prior art not enough, provide a welded tube production line.

In order to achieve the above object, the present invention provides the following technical solutions:

A welded pipe production line comprises a steel belt unreeling mechanism, a base, an extending mechanism, a flanging mechanism, an extruding mechanism, a joint closing mechanism, a high-frequency welding mechanism, a sizing mechanism and a seam scraping mechanism, wherein the extending mechanism, the flanging mechanism, the extruding mechanism, the joint closing mechanism, the high-frequency welding mechanism, the sizing mechanism and the seam scraping mechanism are sequentially arranged on the base from right to left along the advancing direction of a steel belt; the extension mechanism comprises two extension mechanism supports which are arranged in a front-back corresponding mode, two guide-in rollers are arranged on the upper portions of the right sides of the two extension mechanism supports in a rotating mode, three extension rollers are arranged on the lower portions of the two extension mechanism supports in a rotating mode, two guide grooves are formed in the upper portions of the extension mechanism supports, tension roller bearing seats are arranged in the guide grooves in a sliding mode, tension rollers are arranged between the two corresponding tension roller bearing seats in a rotating mode, fixing strips are arranged on the upper portions of the extension mechanism supports, tension roller adjusting screw rods are connected to the fixing strips in a threaded mode, tension roller hand wheels are connected to the upper ends of the tension; the edge bending mechanism comprises an edge bending machine base, an edge bending roller and an edge bending machine pressing plate, the edge bending roller is rotatably arranged on the edge bending machine base, and the edge bending machine pressing plate is arranged at the top of the edge bending roller in a covering mode; the extrusion mechanism comprises a plurality of flat roll mechanisms and vertical roll mechanisms, the vertical roll mechanisms are arranged between adjacent flat roll mechanisms, each flat roll mechanism comprises a flat roll base, a lower flat roll bearing seat is arranged at the lower part of each flat roll base, a lower flat roll is rotatably arranged between the corresponding flat roll bearing seats, an upper flat roll adjusting screw is in threaded connection with the upper part of each flat roll base, an upper flat roll hand wheel is connected with the upper end of the upper flat roll adjusting screw, the lower end of the upper flat roll adjusting screw is rotatably connected with a connecting block, an upper flat roll bearing seat is connected with the lower part of the connecting block, an upper flat roll is rotatably arranged between the corresponding upper flat roll bearing seats, each vertical roll mechanism comprises a vertical roll base, a vertical roll machine chute is formed in each vertical roll base, a first vertical roll shaft bearing seat and a second vertical roll bearing seat are arranged in each vertical roll machine chute, the bottom of the first vertical roll shaft bearing seat is fixedly connected with the bottom of the vertical roll machine chute, a, the second vertical roll bearing seat is in threaded connection with a lead screw of the vertical roll machine, a vertical roll roller is rotatably arranged on the first vertical roll bearing seat and the second vertical roll bearing seat, and a vertical roll machine pressing plate is arranged at the upper part of the vertical roll roller; the seaming mechanism comprises a seaming machine base, two supporting rolls are arranged at the upper part of the seaming machine base, a lifting cylinder is arranged on the side surface of the seaming machine base, a lifting rod is arranged in the lifting cylinder, a supporting block is connected to the upper end of the lifting rod, a seaming block is connected to the inner side of the supporting block, the seaming block is in a fishtail shape, and a plurality of balls are arranged at the lower part of the seaming block; the sizing mechanism comprises a plurality of horizontal sizing mechanisms and vertical sizing mechanisms, the horizontal sizing mechanisms and the vertical sizing mechanisms are arranged in a staggered manner, each horizontal sizing mechanism comprises a horizontal sizing base, a lower horizontal sizing roller bearing seat is arranged at the lower part of the horizontal sizing base, a lower horizontal sizing roller is rotatably arranged between the lower horizontal sizing roller bearing seats, an upper horizontal sizing roller bearing seat is arranged above the lower horizontal sizing roller bearing seat, an adjusting nut is rotatably arranged at the upper part of the horizontal sizing base, an upper horizontal sizing roller adjusting screw rod is connected with the middle of the adjusting nut in a threaded manner, the upper horizontal sizing roller adjusting screw rod penetrates through the top of the horizontal sizing base, the lower end of the upper horizontal sizing roller adjusting screw rod is rotatably connected with the upper horizontal sizing roller bearing seat, an upper horizontal sizing roller is rotatably arranged between the upper horizontal sizing roller bearing seats, each vertical sizing mechanism comprises a vertical sizing base, a vertical sizing machine sliding groove is formed in the vertical sizing, the vertical sizing mill sliding groove is internally and rotatably provided with a vertical sizing mill screw rod, the two vertical sizing roll bearing seats are in threaded connection with the vertical sizing mill screw rod, the first vertical sizing roll bearing seat and the second vertical sizing roll bearing seat are rotatably provided with vertical sizing rolls, and the upper parts of the vertical sizing rolls are provided with vertical sizing mill pressing plates.

preferably, the steel strip unwinding mechanism comprises a rack, an unwinding motor is arranged on the upper portion of the rack, the unwinding motor is in driving connection with an unwinding roller, two steel strip roll fixing blocks are detachably connected to the unwinding roller, and the steel strip roll is sleeved on the unwinding roller and located between the two steel strip roll fixing blocks.

Preferably, the seam scraping mechanism comprises a seam scraping machine base and a seam scraping machine adjusting base, a supporting wheel is rotatably arranged on the lower portion of the seam scraping machine base, an upper adjusting screw rod and a lower adjusting screw rod of the seam scraping machine are in threaded connection with the upper portion of the seam scraping machine base, a first seam scraping machine hand wheel is connected with the upper end of the upper adjusting screw rod and the lower end of the lower adjusting screw rod of the seam scraping machine are rotatably connected with the seam scraping machine adjusting base, a chute of the seam scraping machine adjusting base is formed in the inner portion of the seam scraping machine adjusting base, a sliding block is arranged in the chute of the seam scraping machine adjusting base, a scraper base is connected with the lower portion of the sliding block, a horizontal adjusting screw rod of the seam scraping machine is in threaded connection with the front side of the seam scraping machine adjusting base, a second seam scraping machine hand wheel is connected with the front end of the.

preferably, the inner side of the seam scraping machine base is provided with a seam scraping machine sliding groove, the inner side of the seam scraping machine adjusting base is connected with a guide block, and the guide block is arranged in the seam scraping machine sliding groove.

Compared with the prior art, the beneficial effects of the utility model are that: tension roll accessible tension roll adjusting screw height-adjusting, go up the plain-barreled roll adjusting screw in the plain-barreled roll accessible and adjust and the distance between the plain-barreled roll down, vertical roller accessible vertical roller machine lead screw adjustment interval, go up horizontal sizing roller adjusting screw in the horizontal sizing roller accessible and adjusting nut adjust and the distance between the horizontal sizing roller down, vertical sizing roller accessible vertical sizing machine lead screw adjustment interval, thereby can adapt to the steel pipe production of different specifications, need not to change equipment, therefore convenient operation, high and the application scope of production efficiency is wide. The utility model relates to a rationally, compact structure realizes moreover that the mechanization has that production efficiency is high, and product quality is good, low in labor strength, advantages such as operation safety.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a steel strip unwinding mechanism;

FIG. 3 is a schematic view of the spreader mechanism;

FIG. 4 is a schematic structural view of the edge bending mechanism

FIG. 5 is a schematic view of the pressing mechanism

FIG. 6 is a schematic structural view of a flat roll mechanism

FIG. 7 is a schematic structural view of a vertical roll mechanism

FIG. 8 is a schematic structural view of a seaming mechanism

FIG. 9 is a schematic view of the sizing mechanism

FIG. 10 is a schematic structural view of a horizontal sizing mechanism;

FIG. 11 is a schematic structural view of a vertical sizing mechanism;

fig. 12 is a schematic structural diagram of the mechanism of the scraping mechanism.

Reference numerals: 1. a steel belt unreeling mechanism; 2. a base; 3. an extension mechanism; 4. a crimping mechanism; 5. an extrusion mechanism; 6. a seaming mechanism; 7. a high-frequency welding mechanism; 8. a sizing mechanism; 9. a seam scraping mechanism;

101. A frame; 102. an unwinding motor; 103. unwinding rollers; 104. an unwinding roller support; 105. a steel strip coil; 106. fixing blocks for steel strip coils;

301. a spreader mechanism support; 302. a lead-in roller; 303. an extension roller; 304. a guide groove; 305. a fixing strip; 306. a tension roller adjusting screw; 307. a bearing seat of the tension roller; 308. a tension roller; 309. a tension roller hand wheel;

401. a flanging machine base; 402. a crimping roller; 403. pressing plates of the edge bending machine;

51. A flat roll mechanism; 511. a flat roll stand; 512. a lower flat roll bearing seat; 513. a lower flat roll; 514. adjusting a screw rod by an upper flat roll; 515. an upper flat roller hand wheel; 516. connecting blocks; 517. an upper flat roll bearing seat; 518. an upper flat roll;

52. a vertical roll mechanism; 521. a vertical roll stand; 522. a chute of the vertical roller machine; 523. a vertical roll machine screw rod; 524. a first vertical roller bearing seat; 525. a second vertical roll bearing seat; 526. a vertical roller drum; 527. pressing plates of a vertical roller machine;

601. A seaming machine base; 602. a support roller; 603. a lifting cylinder; 604. a lifting rod; 605. a support block; 606. seaming blocks;

81. A horizontal sizing mechanism; 811. a horizontal sizing mill base; 812. a lower horizontal diameter-fixing roller bearing seat; 813. a lower horizontal sizing roller; 814. adjusting a screw rod by an upper horizontal sizing roller; 815. adjusting the nut; 816. an upper horizontal sizing roll bearing seat; 817. upper horizontal sizing roller

82. A vertical sizing mechanism; 821. a vertical sizing stand; 822. a chute of a vertical sizing mill; 823. a vertical sizing mill screw rod; 824. a first vertical sizing roll bearing block; 825. a second vertical sizing roller bearing block; 826. a vertical sizing roller; 827. pressing plates of a vertical sizing mill;

901. A seam scraping machine base; 902. a support wheel; 903. adjusting a screw rod of the seam scraping machine up and down; 904. a first hand wheel of the seam scraping machine; 905. a seam scraping machine adjusting seat; 906. a sliding chute of the seam scraping machine; 907. a guide block; 908. a sliding chute of an adjusting seat of the seam scraping machine; 909. a slider; 910. a horizontal adjusting screw rod of the seam scraping machine; 911. a second hand wheel of the seam scraping machine; 912. a scraper seat; 913. and (4) scraping the blade.

Detailed Description

embodiments of the present invention will be described in detail below with reference to fig. 1-12.

A welded pipe production line comprises a steel strip unreeling mechanism 1, a machine base 2, an extending mechanism 3, a flanging mechanism 4, an extruding mechanism 5, a seaming mechanism 6, a high-frequency welding mechanism 7, a sizing mechanism 8 and a seam scraping mechanism 9, wherein the extending mechanism 3, the flanging mechanism 4, the extruding mechanism 5, the seaming mechanism 6, the high-frequency welding mechanism 7, the sizing mechanism 8 and the seam scraping mechanism 9 are sequentially arranged on a base 2 from right to left along the advancing direction of a steel strip; the extension mechanism 3 comprises two extension mechanism brackets 301 which are arranged in a front-back corresponding manner, two guide rollers 302 are rotatably arranged on the upper parts of the right sides of the two extension mechanism brackets 301, three extension rollers 303 are rotatably arranged on the lower parts of the two extension mechanism brackets 301, two guide grooves 304 are formed in the upper parts of the extension mechanism brackets 301, tension roller bearing seats 307 are slidably arranged in the guide grooves 304, a tension roller 308 is rotatably arranged between the two corresponding front-back tension roller bearing seats 307, a fixing strip 305 is arranged on the upper parts of the extension mechanism brackets 301, a tension roller adjusting screw 306 is connected with the fixing strip 305 through a thread in the fixing strip 305, a tension roller hand wheel 309 is connected to the upper end of the tension roller adjusting screw 306, and the lower end; the edge bending mechanism 4 comprises an edge bending machine base 401, an edge bending roller 402 and an edge bending machine pressing plate 403, wherein the edge bending roller 402 is rotatably arranged on the edge bending machine base 401, and the edge bending machine pressing plate 403 is arranged on the top of the edge bending roller 402 in a covering manner; the extrusion mechanism 5 comprises a plurality of flat roll mechanisms 51 and vertical roll mechanisms 52, the vertical roll mechanisms 52 are arranged between the adjacent flat roll mechanisms 51, each flat roll mechanism 51 comprises a flat roll base 511, a lower flat roll bearing block 512 is arranged at the lower part of each flat roll base 511, a lower flat roll 513 is rotatably arranged between the flat roll bearing blocks 512, an upper flat roll adjusting screw 514 is in threaded connection with the upper part of each flat roll base 511, an upper flat roll hand wheel 515 is connected with the upper end of each upper flat roll adjusting screw 514, a connecting block 516 is rotatably connected with the lower end of each upper flat roll adjusting screw 514, an upper flat roll bearing block 517 is connected with the lower part of each connecting block 516, an upper flat roll 518 is rotatably arranged between the upper flat roll bearing blocks 517, each vertical roll mechanism 52 comprises a vertical roll base 521, a vertical roll machine chute 522 is arranged in each vertical roll base 521, a first vertical roll bearing block 524 and a second vertical roll bearing block 525 are arranged in each vertical roll machine chute 522, the bottom of the first vertical, a vertical roll machine screw rod 523 is rotatably arranged in the vertical roll machine chute 522, one end of the vertical roll machine screw rod 523 penetrates through the vertical roll machine base 521, a second vertical roll bearing block 525 is in threaded connection with the vertical roll machine screw rod 523, a vertical roll roller 526 is rotatably arranged on the first vertical roll bearing block 524 and the second vertical roll bearing block 525, and a vertical roll machine pressing plate 527 is arranged at the upper part of the vertical roll roller 526; the seaming mechanism 6 comprises a seaming machine base 601, two supporting rollers 602 are arranged at the upper part of the seaming machine base 601, a lifting cylinder 603 is arranged at the side surface of the seaming machine base 601, a lifting rod 604 is arranged inside the lifting cylinder 603, the upper end of the lifting rod 604 is connected with a supporting block 605, a seaming block 606 is connected to the inner side of the supporting block 605, the seaming block 606 is fishtail-shaped, and a plurality of balls are arranged at the lower part of the seaming block 606; the sizing mechanism 8 comprises a plurality of horizontal sizing mechanisms 81 and vertical sizing mechanisms 82, the horizontal sizing mechanisms 81 and the vertical sizing mechanisms 82 are arranged in a staggered mode, each horizontal sizing mechanism 81 comprises a horizontal sizing base 811, a lower horizontal sizing roller bearing seat 812 is arranged at the lower part of each horizontal sizing base 811, a lower horizontal sizing roller 813 is rotatably arranged between the lower horizontal sizing roller bearing seats 812, an upper horizontal sizing roller bearing seat 816 is arranged above the lower horizontal sizing roller bearing seat 812, an adjusting nut 815 is rotatably arranged at the upper part of each horizontal sizing base 811, an upper horizontal sizing roller adjusting screw 814 is in threaded connection with the middle of the adjusting nut 815, the upper horizontal sizing roller adjusting screw 814 penetrates through the top of each horizontal sizing base 811, the lower end of the upper horizontal sizing roller bearing seat 816 is rotatably connected with the upper horizontal sizing roller bearing seat 816, an upper horizontal sizing roller 817 is rotatably arranged between the upper horizontal sizing roller bearing seats 816, a vertical sizing mill sliding groove 822 is formed in the vertical sizing mill base 821, a first vertical sizing roll bearing seat 824 and a second vertical sizing roll bearing seat 825 are arranged in the vertical sizing mill sliding groove 822, a vertical sizing mill screw 823 is rotatably arranged in the vertical sizing mill sliding groove 822, the second vertical sizing roll bearing seat 825 is in threaded connection with the vertical sizing mill screw 823, a vertical sizing roll 826 is rotatably arranged on the first vertical sizing roll bearing seat 824 and the second vertical sizing roll bearing seat 825, and a vertical sizing mill pressing plate 827 is arranged on the upper portion of the vertical sizing roll 826. Preferably, the steel strip unwinding mechanism 1 comprises a frame 101, an unwinding motor 102 is arranged on the upper portion of the frame 101, the unwinding motor 102 is in driving connection with an unwinding roller 103, the unwinding roller 103 is detachably connected with two steel strip winding fixing blocks 106, and a steel strip winding 105 is sleeved on the unwinding roller 103 and is located between the two steel strip winding fixing blocks 106. Preferably, the seam scraping mechanism 9 comprises a seam scraping machine base 901 and a seam scraping machine adjusting base 905, a supporting wheel 902 is rotatably arranged at the lower part of the seam scraping machine base 901, an upper adjusting screw 903 of the seam scraping machine is in threaded connection with the upper part of the seam scraping machine base 901, a first hand wheel 904 of the seam scraping machine is connected with the upper end of the upper adjusting screw 903 of the seam scraping machine, the lower end of the upper adjusting screw 903 of the seam scraping machine is rotatably connected with the seam scraping machine adjusting base 905, a sliding chute 908 of the seam scraping machine adjusting base is formed in the adjusting base 905 of the seam scraping machine, a sliding block 909 is arranged in the sliding chute 908 of the seam scraping machine adjusting base, a scraper seat 912 is connected with the lower part of the scraper seat 912, a horizontal adjusting screw 910 of the seam scraping machine is in threaded connection with the front side of the seam scraping machine adjusting base 905, a second hand wheel 911 of the seam scraping machine is connected with the front end of the horizontal adjusting screw 910 of the seam. Preferably, a sliding chute 906 of the sewing machine is formed in the inner side of the sewing machine base 901, a guide block 907 is connected to the inner side of the sewing machine adjusting base 905, and the guide block 901 is arranged in the sliding chute 906 of the sewing machine.

The utility model has the advantages that,

The height of the tension roller 308 can be adjusted through the tension roller adjusting screw 306, the distance between the upper flat roller 518 and the lower flat roller 513 can be adjusted through the upper flat roller adjusting screw 514, the distance between the vertical roller 526 and the vertical roller mill screw 523 can be adjusted through the vertical roller mill screw 523, the distance between the upper horizontal sizing roller 817 and the lower horizontal sizing roller 813 can be adjusted through the upper horizontal sizing roller adjusting screw 814 and the adjusting nut 815, and the distance between the vertical sizing roller 826 and the vertical sizing mill screw 823 can be adjusted through the vertical sizing mill screw 823, so that the steel pipe production with different specifications can be adapted, equipment does not need to be replaced, and the steel pipe production line is convenient to operate. The utility model relates to a rationally, compact structure realizes moreover that the mechanization has that production efficiency is high, and product quality is good, low in labor strength, advantages such as operation safety.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (4)

1. The utility model provides a welded tube production line, includes steel band unwinding mechanism, base, extension mechanism, crimping mechanism, extrusion mechanism, joint closing mechanism, high frequency welding mechanism, sizing mechanism, scrapes seam mechanism, its characterized in that: the extension mechanism, the edge bending mechanism, the extrusion mechanism, the joint closing mechanism, the high-frequency welding mechanism, the sizing mechanism and the joint scraping mechanism are sequentially arranged on the base from right to left along the advancing direction of the steel strip; the extension mechanism comprises two extension mechanism supports which are arranged in a front-back corresponding mode, two guide-in rollers are arranged on the upper portions of the right sides of the two extension mechanism supports in a rotating mode, three extension rollers are arranged on the lower portions of the two extension mechanism supports in a rotating mode, two guide grooves are formed in the upper portions of the extension mechanism supports, tension roller bearing seats are arranged in the guide grooves in a sliding mode, tension rollers are arranged between the two corresponding tension roller bearing seats in a rotating mode, fixing strips are arranged on the upper portions of the extension mechanism supports, tension roller adjusting screw rods are connected with the inner threads of the fixing strips, tension roller hand wheels are connected to the upper ends of the tension roller adjusting screw rods, and the lower ends of; the edge bending mechanism comprises an edge bending machine base, an edge bending roller and an edge bending machine pressing plate, the edge bending roller is rotatably arranged on the edge bending machine base, and the edge bending machine pressing plate is arranged at the top of the edge bending roller in a covering mode; the extrusion mechanism comprises a plurality of flat roll mechanisms and vertical roll mechanisms, the vertical roll mechanisms are arranged between adjacent flat roll mechanisms, each flat roll mechanism comprises a flat roll machine seat, a lower flat roll bearing seat is arranged at the lower part of each flat roll machine seat, a lower flat roll is rotatably arranged between the flat roll bearing seats, an upper flat roll adjusting screw is in threaded connection with the upper part of each flat roll machine seat, an upper flat roll hand wheel is connected with the upper flat roll adjusting screw, a connecting block is rotatably connected with the lower end of the upper flat roll adjusting screw, an upper flat roll bearing seat is connected with the lower part of the connecting block, an upper flat roll is rotatably arranged between the upper flat roll bearing seats, each vertical roll mechanism comprises a vertical roll machine seat, a vertical roll machine chute is arranged in each vertical roll machine seat, a first vertical roll bearing seat and a second vertical roll bearing seat are arranged in each vertical roll machine chute, the bottom of each first vertical roll bearing seat is fixedly connected with the bottom of each vertical, a vertical roll machine screw rod is rotationally arranged in the vertical roll machine chute, one end of the vertical roll machine screw rod penetrates through the vertical roll machine base, the second vertical roll bearing seat is in threaded connection with the vertical roll machine screw rod, a vertical roll roller is rotationally arranged on the first vertical roll bearing seat and the second vertical roll bearing seat, and a vertical roll machine pressing plate is arranged at the upper part of the vertical roll roller; the seaming mechanism comprises a seaming machine base, two supporting rolls are arranged at the upper part of the seaming machine base, a lifting cylinder is arranged on the side surface of the seaming machine base, a lifting rod is arranged in the lifting cylinder, the upper end of the lifting rod is connected with a supporting block, a seaming block is connected to the inner side of the supporting block, the seaming block is in a fishtail shape, and a plurality of balls are arranged at the lower part of the seaming block; the sizing mechanism comprises a plurality of horizontal sizing mechanisms and a vertical sizing mechanism, the horizontal sizing mechanisms and the vertical sizing mechanisms are arranged in a staggered mode, each horizontal sizing mechanism comprises a horizontal sizing base, a lower horizontal sizing roller bearing seat is arranged on the lower portion of the horizontal sizing base, a lower horizontal sizing roller is arranged between the lower horizontal sizing roller bearing seats in a rotating mode, an upper horizontal sizing roller bearing seat is arranged above the lower horizontal sizing roller bearing seat, an adjusting nut is arranged on the upper portion of the horizontal sizing base in a rotating mode, an upper horizontal sizing roller adjusting screw rod is connected with the adjusting nut in the middle of the adjusting nut in a threaded mode, the upper horizontal sizing roller adjusting screw rod penetrates through the top of the horizontal sizing base, the lower end of the upper horizontal sizing roller adjusting screw rod is connected with the upper horizontal sizing roller bearing seat in a rotating mode, an upper horizontal sizing roller is arranged, the vertical sizing mill comprises a vertical sizing mill base, and is characterized in that a vertical sizing mill sliding groove is formed in the vertical sizing mill base, a first vertical sizing roll bearing seat and a second vertical sizing roll bearing seat are arranged in the vertical sizing mill sliding groove, a vertical sizing mill screw rod is rotatably arranged in the vertical sizing mill sliding groove, the second vertical sizing roll bearing seat is in threaded connection with the vertical sizing mill screw rod, vertical sizing rolls are rotatably arranged on the first vertical sizing roll bearing seat and the second vertical sizing roll bearing seat, and a vertical sizing mill pressing plate is arranged on the upper portion of each vertical sizing roll.

2. A welded tube production line according to claim 1, characterized in that: the steel band unwinding mechanism comprises a rack, an unwinding motor is arranged on the upper portion of the rack, the unwinding motor is in driving connection with an unwinding roller, two steel band winding fixing blocks are detachably connected to the unwinding roller, and the steel band winding is sleeved on the unwinding roller and located between the two steel band winding fixing blocks.

3. A welded tube production line according to claim 1, characterized in that: the scraping mechanism comprises a scraping machine base and a scraping machine adjusting base, a supporting wheel is arranged on the lower portion of the scraping machine base in a rotating mode, an upper adjusting screw rod and a lower adjusting screw rod of the scraping machine are in threaded connection with the upper portion of the scraping machine base, a first scraping machine hand wheel is connected with the upper end of the upper adjusting screw rod and the lower end of the lower adjusting screw rod of the scraping machine are connected with the scraping machine adjusting base in a rotating mode, a sliding groove of the scraping machine adjusting base is formed in the inner portion of the scraping machine adjusting base, a sliding block is arranged in the sliding groove of the scraping machine adjusting base, the lower portion of the sliding block is connected with a scraping tool base, a scraper is arranged on the lower portion of the scraping tool base, a horizontal adjusting screw rod of the scraping machine is in threaded connection with the front side of the scraping machine adjusting base, the front end of the horizontal adjusting screw rod of the scraping machine is connected with a second.

4. A welded tube production line according to claim 3, characterized in that: the inner side of the seam scraping machine base is provided with a seam scraping machine sliding groove, the inner side of the seam scraping machine adjusting base is connected with a guide block, and the guide block is arranged in the seam scraping machine sliding groove.