阅读说明：本技术 钢管成型设备 (Steel pipe forming equipment ) 是由 史纪忠 周德恒 何叶磊 于 2021-08-20 设计创作，主要内容包括：本发明提供了一种钢管成型设备,包括机架和沿钢带的输送方向依次设于所述机架的送入单元、旋转平辊单元、开合平辊单元、抗弯单元、旋转立辊单元、第一精成型单元、第二精成型单元和输出单元；钢带由所述送入单元进入设备后沿输送方向依次经过旋转平辊单元、开合平辊单元、抗弯单元、旋转立辊单元、第一精成型单元和第二精成型单元,形成具有直线缝隙的管坯后由所述输出单元向外送出。本发明提供的钢管成型设备,旨在实现一体化生产钢管,提高钢管的生产效率。(The invention provides steel pipe forming equipment which comprises a rack, and a feeding unit, a rotating flat roller unit, an opening and closing flat roller unit, an anti-bending unit, a rotating vertical roller unit, a first fine forming unit, a second fine forming unit and an output unit which are sequentially arranged on the rack along the conveying direction of a steel strip; the steel strip is sent into the equipment by the sending unit and then sequentially passes through the rotating flat roll unit, the opening and closing flat roll unit, the bending resistance unit, the rotating vertical roll unit, the first fine forming unit and the second fine forming unit along the conveying direction, and the steel strip is sent out outwards by the output unit after forming a pipe blank with a linear gap. The invention provides steel pipe forming equipment, aiming at realizing the integrated production of steel pipes and improving the production efficiency of the steel pipes.)

1. The steel pipe forming equipment is characterized by comprising a rack, and a feeding unit, a rotating flat roller unit, an opening and closing flat roller unit, a bending resistance unit, a rotating vertical roller unit, a first fine forming unit, a second fine forming unit and an output unit which are sequentially arranged on the rack along the conveying direction of a steel strip; the steel strip by send into behind the unit entering equipment along direction of delivery follow in proper order rotatory plain-barreled roll unit, the plain-barreled roll unit that opens and shuts, bending resistance unit rotatory edger roll unit first finish forming unit with second finish forming unit is by behind the formation pipe blank that has the sharp gap the output unit is outwards seen off.

2. The steel pipe forming apparatus as claimed in claim 1, further comprising a vertical roll unit, a sizing unit, and a rough straightening unit provided downstream of the output unit in the conveying direction.

3. The steel pipe forming apparatus of claim 1, wherein the first finish forming unit comprises:

the first upper roller assembly is arranged on the rack by taking a first path as a rotating shaft center, the first path is perpendicular to the conveying direction and is also perpendicular to the vertical direction, the first upper roller assembly is provided with a first positioning mechanism moving along the first path, and the first positioning mechanism is abutted against two side edges of an upper opening of the tube blank;

the first lower roller assembly is arranged on the frame by taking a second path as a rotating shaft center and is positioned below the first upper roller assembly, the second path is parallel to the first path, the first lower roller assembly is further in sliding fit with the frame along the vertical direction, and the first lower roller assembly is used for providing supporting force for the bottom of the tube blank; and

first side roller subassembly has two first side roller axles, two first side roller axle all uses the third route to rotate as the axle center and locates the frame, the third route is on a parallel with upper and lower direction, two first side roller axle uses the delivery path to set up as symmetry axis symmetry, two first side roller axle still with the frame is on a parallel with sliding fit in the direction on first route, two first side roller axle is used for applying the extrusion force to the both sides face of pipe.

4. The steel pipe forming apparatus according to claim 3, wherein the first upper roller assembly includes a first upper roller shaft rotatably provided to the frame with the first path as an axis, both ends of the first upper roller shaft are respectively provided with external threads having opposite directions of rotation, and the two first positioning mechanisms are respectively screwed to both ends of the first upper roller shaft; the first positioning mechanism is connected with the frame in a sliding mode, and the first upper roll shaft is axially fixed on the frame through the first positioning mechanism.

5. The steel pipe forming equipment of claim 3, wherein the first precision forming unit further comprises an inclined insertion assembly, the inclined insertion assembly comprises two inclined insertion rollers, the two inclined insertion rollers are respectively rotatably arranged on the frame, the two inclined insertion rollers are arranged on the frame in a mirror symmetry manner along the conveying path, the two inclined insertion rollers are arranged at an included angle, and the two inclined insertion rollers are used for respectively supporting two opposite sides of the outer peripheral surface of the pipe blank.

6. The steel pipe forming equipment according to claim 1, wherein the second finish forming unit comprises two lining rollers which are respectively rotatably arranged on the frame, the two lining rollers are symmetrically arranged along the conveying path, the axes of the lining rollers are perpendicular to the conveying path, and the lining rollers are used for abutting against the inner surface of the pipe blank.

7. The steel pipe forming apparatus of claim 1, wherein the opening and closing flat roll unit comprises a plurality of sets of forming modules sequentially arranged on the frame along the conveying direction, the forming modules comprising:

the second upper roller assembly is arranged on the rack by taking a fourth path as a rotating shaft center, can slide on the rack along the vertical direction, is perpendicular to the conveying direction and the vertical direction, and is provided with a second positioning mechanism capable of moving along the fourth path, and the second positioning mechanism is abutted against two side edges of an upper opening of the tube blank;

the second lower roll assembly is arranged on the machine frame by taking a fifth path as a rotating shaft center and is positioned below the second upper roll assembly, the fifth path is parallel to the fourth path, the second lower roll assembly is also in sliding fit with the machine frame along the vertical direction, and the second lower roll assembly is used for providing supporting force for the bottom of the tube blank; and

second side roller subassembly has two second side roller axles, two the second side roller axle all uses the sixth route to rotate as the axle center and locates the frame, the sixth route is on a parallel with upper and lower direction, two the second side roller axle uses conveying path to set up as symmetry axis symmetry, two the second side roller axle still with the frame is on a parallel with sliding fit in the direction on fourth route, two the second side roller axle is used for applying the extrusion force to the both sides face of pipe.

8. The steel pipe forming apparatus of claim 7, wherein the second lower roller assembly comprises:

the second support frame is connected with the rack;

the second mounting frame is connected to the second support frame in a sliding mode along the vertical direction; and

and the second lower roll shaft is rotatably connected with the second mounting rack by taking the fifth path as an axis.

9. The steel duct forming apparatus of claim 7, wherein the second upper roller assembly comprises:

the two second connecting seats are respectively connected to the rack in a sliding manner along the vertical direction;

two ends of the second upper roll shaft are respectively connected with the two second connecting seats, the second upper roll shaft is rotatably connected with the two second connecting seats by taking the fourth path as an axis, and the two second positioning mechanisms are respectively connected with the second upper roll shaft; and

and the sixth driver is arranged on the rack, is connected with one of the second connecting seats and is used for driving the second connecting seat to slide along the vertical direction.

10. The steel pipe forming apparatus of claim 9, wherein the second positioning mechanism comprises:

the mounting seat is connected to the end part of the second upper roller shaft and is provided with an accommodating cavity with a downward opening; and

the positioning roller is arranged in the accommodating cavity in a rotating mode with the fourth path as an axis, the positioning roller is partially positioned in the accommodating cavity, and the lower portion of the positioning roller is used for being abutted to the opening side edge of the tube blank.

Technical Field

The invention belongs to the technical field of steel pipe preparation, and particularly relates to steel pipe forming equipment.

Background

The steel tube production process clamps two sides of a steel strip through the roll shafts, the steel strip sequentially passes through a plurality of groups of roll shafts with different shapes and angles in the conveying process, so that the flat steel strip is gradually bent until an annular steel tube blank is formed, and finally, the gap of the steel tube blank is fixedly connected through high-frequency welding to form a finished steel tube. However, the existing steel pipe production equipment cannot complete the integrated production from steel belts to steel pipes, so that the production efficiency is low.

Disclosure of Invention

The invention aims to provide steel pipe forming equipment, which aims to realize integrated production of steel pipes and improve the production efficiency of the steel pipes.

In order to achieve the purpose, the invention adopts the technical scheme that: the steel pipe forming equipment comprises a rack, and a feeding unit, a rotating flat roller unit, an opening and closing flat roller unit, a bending resistance unit, a rotating vertical roller unit, a first fine forming unit, a second fine forming unit and an output unit which are sequentially arranged on the rack along the conveying direction of a steel belt; the steel strip by send into behind the unit entering equipment along direction of delivery follow in proper order rotatory plain-barreled roll unit, the plain-barreled roll unit that opens and shuts, bending resistance unit rotatory edger roll unit first finish forming unit with second finish forming unit is by behind the formation pipe blank that has the sharp gap the output unit is outwards seen off.

In one possible implementation, the steel pipe forming apparatus further includes a vertical roll unit, a sizing unit, and a rough straightening unit provided downstream of the output unit in the conveying direction.

In one possible implementation, the first fine forming unit includes:

the first upper roller assembly is arranged on the rack by taking a first path as a rotating shaft center, the first path is perpendicular to the conveying direction and is also perpendicular to the vertical direction, the first upper roller assembly is provided with a first positioning mechanism moving along the first path, and the first positioning mechanism is abutted against two side edges of an upper opening of the tube blank;

the first lower roller assembly is arranged on the frame by taking a second path as a rotating shaft center and is positioned below the first upper roller assembly, the second path is parallel to the first path, the first lower roller assembly is further in sliding fit with the frame along the vertical direction, and the first lower roller assembly is used for providing supporting force for the bottom of the tube blank; and

first side roller subassembly has two first side roller axles, two first side roller axle all uses the third route to rotate as the axle center and locates the frame, the third route is on a parallel with upper and lower direction, two first side roller axle uses the delivery path to set up as symmetry axis symmetry, two first side roller axle still with the frame is on a parallel with sliding fit in the direction on first route, two first side roller axle is used for applying the extrusion force to the both sides face of pipe.

In a possible implementation manner, the upper roller assembly comprises a first upper roller shaft which is rotatably arranged on the rack by taking the first path as an axis, two ends of the first upper roller shaft are respectively provided with external threads with opposite rotation directions, and the two first positioning mechanisms are respectively in threaded connection with two ends of the first upper roller shaft; the first positioning mechanism is connected with the frame in a sliding mode, and the first upper roll shaft is axially fixed on the frame through the first positioning mechanism.

In a possible implementation mode, first smart shaping unit is still including inserting the subassembly to one side, insert the subassembly to one side and include that two insert the roller to one side, two insert the roller to one side and rotate respectively and locate the frame, two insert the roller to one side and locate along the delivery path mirror symmetry the frame, and two insert the roller to one side and be the contained angle setting, two insert the roller to one side and be used for providing the support respectively to the relative both sides of base pipe outer peripheral face.

In a possible implementation manner, the second fine forming unit comprises two lining rollers which are respectively rotatably arranged on the frame, the two lining rollers are symmetrically arranged along the conveying path, the axis of each lining roller is perpendicular to the conveying path, and the lining rollers are used for being abutted to the inner surface of the tube blank.

In one possible implementation manner, the open-close flat roll unit comprises a plurality of groups of forming modules which are sequentially arranged on the frame along the conveying direction, and each forming module comprises:

the second upper roller assembly is arranged on the rack by taking a fourth path as a rotating shaft center, can slide on the rack along the vertical direction, is perpendicular to the conveying direction and the vertical direction, and is provided with a second positioning mechanism capable of moving along the fourth path, and the second positioning mechanism is abutted against two side edges of an upper opening of the tube blank;

the second lower roll assembly is arranged on the machine frame by taking a fifth path as a rotating shaft center and is positioned below the second upper roll assembly, the fifth path is parallel to the fourth path, the second lower roll assembly is also in sliding fit with the machine frame along the vertical direction, and the second lower roll assembly is used for providing supporting force for the bottom of the tube blank; and

second side roller subassembly has two second side roller axles, two the second side roller axle all uses the sixth route to rotate as the axle center and locates the frame, the sixth route is on a parallel with upper and lower direction, two the second side roller axle uses conveying path to set up as symmetry axis symmetry, two the second side roller axle still with the frame is on a parallel with sliding fit in the direction on fourth route, two the second side roller axle is used for applying the extrusion force to the both sides face of pipe.

In one possible implementation, the second lower roller assembly includes:

the second support frame is connected with the rack;

the second mounting frame is connected to the second support frame in a sliding mode along the vertical direction; and

and the second lower roll shaft is rotatably connected with the second mounting rack by taking the fifth path as an axis.

In one possible implementation, the second upper roller assembly includes:

the two second connecting seats are respectively connected to the rack in a sliding manner along the vertical direction;

two ends of the second upper roll shaft are respectively connected with the two second connecting seats, the second upper roll shaft is rotatably connected with the two second connecting seats by taking the fourth path as an axis, and the two second positioning mechanisms are respectively connected with the upper roll shaft; and

and the sixth driver is arranged on the rack, is connected with one of the second connecting seats and is used for driving the second connecting seat to slide along the vertical direction.

In one possible implementation, the second positioning mechanism includes:

the mounting seat is connected to the end part of the second upper roller shaft and is provided with an accommodating cavity with a downward opening; and

the positioning roller is arranged in the accommodating cavity in a rotating mode with the fourth path as an axis, the positioning roller is partially positioned in the accommodating cavity, and the lower portion of the positioning roller is used for being abutted to the opening side edge of the tube blank.

The steel pipe forming equipment provided by the invention has the beneficial effects that: compared with the prior art, the steel pipe forming equipment can straighten the whole coil of steel belt by the feeding unit and then feed the straightened steel belt into the rotating flat roll unit for primary processing, then the preliminarily formed pipe blank sequentially passes through the opening and closing flat roll unit, the bending resisting unit, the rotating vertical roll unit, the first fine forming unit and the second fine forming unit to form the pipe blank with a linear gap, and finally the pipe blank is sent out by the output unit. The steel pipe forming equipment provided by the invention can realize the integrated processing from the steel belt to the formed pipe blank, does not need to transfer the pipe blank manually in the production process, improves the processing precision, realizes the automatic production of feeding, processing and outputting, and improves the production efficiency. In addition, the invention gradually completes the forming of the tube blank by a plurality of processing units, avoids the phenomena of tube blank cracking and the like in the processing process and improves the qualification rate of products.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a steel pipe forming apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a first precision molding unit according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of the angle insertion assembly of FIG. 2;

FIG. 4 is an enlarged view of a portion A of FIG. 3;

FIG. 5 is a schematic view of the first upper roller assembly in contact with a tube blank as utilized in an embodiment of the present invention;

FIG. 6 is a side view of a second precision forming unit employed in an embodiment of the present invention;

FIG. 7 is a front view of a second precision molding unit employed in an embodiment of the present invention;

FIG. 8 is a partial enlarged view of portion B of FIG. 7;

FIG. 9 is a partial view of a liner tube in contact with a tube blank as used in an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of an opening and closing flat roller unit adopted by the embodiment of the invention;

FIG. 11 is a front view of an opening and closing flat roll unit employed in an embodiment of the present invention;

FIG. 12 is a partial schematic view of a second upper roller assembly and a second side roller assembly utilized in accordance with an embodiment of the present invention;

figure 13 is a top plan view of the second upper roller assembly utilized in the embodiments of the present invention.

In the figure: 1. a feeding unit; 2. a rotating flat roll unit; 3. an opening and closing flat roll unit; 301. a seventh driver; 302. a second upper roller shaft; 303. a second mounting seat; 304. a positioning roller; 305. a second mounting bracket; 306. a second lower roll shaft; 307. a fifth driver; 308. a second side roller shaft; 309. a second support frame; 3010. a second connecting seat; 3011. a sixth driver; 4. a bending-resistant unit; 5. a rotating vertical roll unit; 6. a first precision molding unit; 601. a first positioning mechanism; 602. a guide mechanism; 603. a first upper roller shaft; 604. a first side roller shaft; 605. a first lower roll shaft; 605-1, roller sleeve; 606. a first connecting seat; 607. a first driver; 608. oblique inserting rollers; 609. a first support frame; 609-1, a first mounting seat; 609 — 101, a second mount; 609 — 102, a first mount; 609-; 609-104, a first fixed block; 609-2, a supporting seat; 6010. a work table; 6011. a third driver; 6012. a fourth driver; 6013. a slide bar; 6014. a strip-shaped opening; 6015. an arc-shaped chute; 6016. a second driver; 7. a second precision forming unit; 701. a lining roller; 702. a second fixed block; 703. a rotating gear; 8. an output unit; 9. a vertical roll unit; 10. a sizing unit; 11. a rough straightening unit; 12. a frame; 13. and (5) tube blanks.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that "rotation axis" refers to the rotation axis of the roller shaft, and does not mean that the entire assembly is rotatably connected to the frame.

Referring to fig. 1, a steel pipe forming apparatus according to the present invention will now be described. The steel pipe forming equipment comprises a rack 12, and a feeding unit 1, a rotating flat roller unit 2, an opening and closing flat roller unit 3, an anti-bending unit 4, a rotating vertical roller unit 5, a first fine forming unit 6, a second fine forming unit 7 and an output unit 8 which are sequentially arranged on the rack 12 along the conveying direction of a steel strip; after entering the equipment from the feeding unit 1, the steel strip sequentially passes through the rotating flat roll unit 2, the opening and closing flat roll unit 3, the bending unit 4, the rotating vertical roll unit 5, the first fine forming unit 6 and the second fine forming unit 7 along the conveying direction, forms a pipe blank 13 with a linear gap, and then is sent out from the output unit 8.

Compared with the prior art, the steel pipe forming equipment provided by the invention can straighten the whole coil of steel belt by the feeding unit 1 and then feed the straightened steel belt into the rotating flat roll unit 2 for primary processing, then the preliminarily formed pipe blank 13 sequentially passes through the opening and closing flat roll unit 3, the bending resistance unit 4, the rotating vertical roll unit 5, the first fine forming unit 6 and the second fine forming unit 7 to form the pipe blank 13 with a linear gap, and finally the pipe blank 13 is outwards sent out by the output unit 8. The steel pipe forming equipment provided by the invention can realize the integrated processing from the steel belt to the formed pipe blank 13, does not need to transfer the pipe blank 13 manually in the production process, improves the processing precision, realizes the automatic production of feeding, processing and outputting, and improves the production efficiency. In addition, the forming of the tube blank 13 is gradually completed through a plurality of processing units, so that the phenomena of cracking of the tube blank 13 and the like in the processing process are avoided, and the product percent of pass is improved.

In some embodiments, referring to fig. 1, the steel pipe forming apparatus further includes a vertical roll unit 9, a sizing unit 10, and a rough straightening unit 11 provided downstream of the output unit 8 in the conveying direction.

In this embodiment, after being fed out by the feeding unit 8, the outer peripheral surface of the hollow shell 13 is adjusted by the vertical roll unit 9 so that the outer peripheral surface of the hollow shell 13 forms a smooth arc surface, the outer diameter of the hollow shell 13 is further adjusted by the sizing unit 10 so as to keep the outer diameter of the hollow shell 13 constant, and finally the straightness of the hollow shell 13 in the major axis direction is adjusted by the rough straightening unit 11. Through the adjustment of the above steps, the forming precision of the tube blank 13 is further improved, and the product quality is ensured.

In some embodiments, referring to fig. 2, the first fine forming unit 6 includes a first upper roller assembly, a first lower roller assembly and a first side roller assembly, the first upper roller assembly is disposed on the frame 12 with a first path as a rotation axis, the first path is perpendicular to the conveying direction and perpendicular to the up-down direction, the first upper roller assembly has a first positioning mechanism 601 moving along the first path, and the first positioning mechanism 601 abuts against two side edges of the upper opening of the tube blank 13; the first lower roller assembly is arranged on the frame 12 by taking a second path as a rotating shaft center and is positioned below the first upper roller assembly, the second path is parallel to the first path, the first lower roller assembly is further in sliding fit with the frame 12 along the up-down direction, and the first lower roller assembly is used for providing supporting force for the bottom of the tube blank 13; the first side roller assembly is provided with two first side roller shafts 604, the two first side roller shafts 604 are rotatably arranged on the frame 12 by taking a third path as an axis, the third path is parallel to the vertical direction, the two first side roller shafts 604 are symmetrically arranged by taking the conveying path as a symmetry axis, the two first side roller shafts 604 are also in sliding fit with the frame 12 in the direction parallel to the first path, and the two first side roller shafts 604 are used for applying extrusion force to two side surfaces of the tube blank 13.

The first positioning mechanism 601 of the first upper roller assembly can adjust the opening and closing distance according to the size of the opening needed by the tube blank 13, and the opening of the tube blank 13 is gradually gathered in the forming process until the opening is abutted to the first positioning mechanism 601 so as to ensure that the size of the opening formed by the tube blank 13 meets the requirement. The first lower roll assembly can support the bottom of the tube blank 13, and simultaneously the first lower roll assembly can move up and down according to the size of the processed tube blank 13, so that the tube blank 13 with different sizes can be processed and formed in cooperation with the first upper roll assembly. The two first side roller shafts 604 respectively clamp the two sides of the tube blank 13, so that the two sides of the tube blank 13 form arc surfaces, and the distance between the two first side roller shafts 604 is adjusted according to the size requirement of the tube blank 13 to be processed, so that the tube blank 13 is suitable for different size requirements. This device can adjust the interval between first last roller set spare and the first lower roll set spare according to the production requirement, also can adjust the interval between two first side roller shafts 604 simultaneously, makes the outer peripheral face of pipe 13 form smooth mellow and graceful arcwall face, and first positioning mechanism 601 can require along self axial slip according to the opening of pipe 13 to be applicable to different openings. The first upper roller assembly, the first lower roller assembly and the two first side roller shafts 604 can rotate, so that the friction force borne by the tube blank 13 in the conveying process is reduced, and the tube blank 13 is prevented from being abraded. The structure can produce tube blanks 13 with different sizes, does not need to replace each part, reduces the production cost, and can meet various production requirements

In some embodiments, referring to fig. 2, the first lower roller assembly includes two first connection seats 606 oppositely disposed, a first lower roller shaft 605 and a first driver 607, and the two first connection seats 606 are slidably disposed on the frame 12 along the up-down direction respectively; the first lower roller shaft 605 is disposed around the second path, and two ends of the first lower roller shaft are respectively rotatably connected to the two first connecting seats 606; two first drivers 607 are all provided in the frame 12, and the first drivers 607 are connected to the first connecting bases 606 therein for driving the first connecting bases 606 to move up and down.

In this embodiment, the first driver 607 can drive the first lower roller shaft 605 to move up and down, so that the first connecting seat 606 slides up and down along the machine frame 12, and the distance between the first lower roller shaft 605 and the first upper roller assembly is adjusted to be suitable for the tube blanks 13 with different sizes.

Optionally, the first driver 607 is an air cylinder, or a motor and a lead screw, and a nut on the lead screw is connected to the first lower roller shaft 605.

Optionally, the first lower roll shaft 605 is externally sleeved with a roll sleeve 605-1, and the roll sleeve 605-1 is provided with an arc-shaped forming surface for forming an arc-shaped surface at the bottom of the tube blank 13.

In some embodiments, referring to fig. 2 and fig. 5, the first upper roller assembly includes a first upper roller shaft 603 disposed on the frame 12 and rotating around the first path, two ends of the first upper roller shaft 603 are respectively provided with external threads with opposite rotation directions, and two first positioning mechanisms 601 are respectively threaded to two ends of the first upper roller shaft 603; the device further comprises two guide mechanisms 602 which are respectively connected to the frame 12, wherein the guide mechanisms 602 are used for limiting the first positioning mechanism 601 to move in the axial direction of the first upper roller shaft 603.

The two sides of the opening of the tube blank 13 are respectively abutted against the two first positioning mechanisms 601 so as to ensure the opening size of the formed tube blank 13. The guide mechanism 602 guides the first positioning mechanism 601 when the first positioning mechanism 601 moves along the first path, and prevents rotation thereof. The first upper roll shaft 603 is rotated to enable the two first positioning mechanisms 601 in threaded connection with the first upper roll shaft 603 to move in the first radial opposite direction, so that the distance between the two first positioning mechanisms 601 is adjusted, the opening size of different tube blanks 13 is suitable, the first upper roll assembly is not required to be replaced, the operation time is saved, and the production cost is reduced.

Optionally, the structure can drive the first upper roller shaft 603 to rotate through a motor according to production requirements.

Optionally, the first positioning mechanism 601 includes a positioning seat sleeved outside the first upper roll shaft 603, a positioning portion is circumferentially arranged on the positioning seat along the circumferential direction, the positioning portion can abut against the side edge of the opening of the tube blank 13, and an internal thread is arranged on the positioning seat; the positioning seat is a cylindrical component, the positioning part is an annular positioning sheet, the positioning sheet is arranged at the opposite end of the positioning seat, and a stepped annular groove close to the positioning sheet is formed at the opposite end of the positioning seat.

In some embodiments, referring to fig. 2 to 4, the first precision forming unit 6 further includes an oblique insertion component, the oblique insertion component includes two oblique insertion rollers 608, the two oblique insertion rollers 608 are respectively rotatably disposed on the frame 12, the two oblique insertion rollers 608 are mirror-symmetrically disposed on the frame 12 along the conveying path, the two oblique insertion rollers 608 form an included angle, and the two oblique insertion rollers 608 are configured to respectively support two opposite sides of the outer circumferential surface of the tube blank 13.

The two oblique insert rollers 608 provide supporting force for the outer peripheral surface of the tube blank 13 at the contact blind points of the first upper roller shaft 603, the first lower roller shaft 605, the first side roller shaft 604 and the tube blank 13, and the defects that the supporting blind point area of the tube blank 13 is sunken or raised due to extrusion forming in the forming process are avoided. The two oblique inserting rollers 608 respectively support two opposite sides of the tube blank 13, so that the surface of the tube blank 13 is uniformly stressed, and the ellipticity of the formed tube blank 13 is prevented from failing to reach the standard. The oblique inserting rollers 608 can rotate along with the conveying of the tube blank 13, so that friction force between the oblique inserting rollers and the outer surface of the tube blank 13 is reduced, and the tube blank 13 is prevented from being abraded. The device can ensure that the surface of the formed tube blank 13 is smooth and mellow, and the product quality is improved.

In some embodiments, referring to fig. 2 to 4, the oblique inserting roller 608 is disposed on the frame 12 through a connecting mechanism, the connecting mechanism includes a work bench 6010 and two first support frames 609 disposed opposite to the work bench 6010, the two first support frames 609 are slidably disposed along a direction perpendicular to the conveying direction, and the two oblique inserting rollers 608 are respectively rotatably disposed on the two first support frames 609.

In the embodiment, the two first supporting frames 609 slide along the direction perpendicular to the conveying direction, and the distance between the two first supporting frames 609 can be adjusted, so that supporting force can be provided for tube blanks 13 with different diameters, when the diameter of the tube blank 13 to be processed is changed, the whole device does not need to be replaced, and the production cost is saved.

Optionally, a second actuator 6016 is disposed on the work bench 6010, and the second actuator 6016 is connected to the first support frame 609 and can drive the first support frame 609 to slide.

Alternatively, the second driver 6016 may be an air cylinder or a motor.

In some embodiments, referring to fig. 2 to 4, the first supporting frame 609 includes a supporting seat 609-2 and a first mounting seat 609-1, the supporting seat 609-2 is slidably disposed on the frame 12 along a direction perpendicular to the conveying direction for adjusting the opening and closing distance between the two supporting seats 609-2; the first mounting seat 609-1 is arranged on the supporting seat 609-2 in a sliding manner along the up-down direction and used for adjusting the height of the first mounting seat 609-1, and the inclined insertion roller 608 is rotatably connected with the first mounting seat 609-1.

The supporting seat 609-2 can slide along the direction vertical to the conveying direction to adjust the opening and closing distance between the two supporting seats 609-2, the height of the first mounting seat 609-1 can be adjusted, and when the size of the tube blank 13 changes, the inclined insert rollers 608 can provide supporting force for the tube blank 13 by respectively adjusting the supporting seat 609-2 and the first mounting seat 609-1, so that the adjusting range is expanded, and the device is suitable for tube blanks 13 with more sizes. The oblique inserting roller 608 is rotatably connected with the first mounting seat 609-1, in the forming process of the tube blank 13, the formed tube blank 13 is continuously conveyed to the next station, meanwhile, the tube blank 13 at the previous station is conveyed, and the rotating connection can reduce the friction between the oblique inserting roller 608 and the tube blank 13 and avoid abrasion of the outer surface of the tube blank 13.

Optionally, the first mounting seat 609-1 and the support seat 609-2 are respectively provided with corresponding first mounting holes, and after the first mounting seat 609-1 is adjusted to a specified position, the corresponding first mounting holes may be connected and fixed by a threaded connection piece, so as to position the first mounting seat 609-1.

In some embodiments, referring to fig. 2 to 4, the inclined insertion assembly further includes a third actuator 6011 disposed on the supporting base 609-2, and the third actuator 6011 is connected to the first mounting base 609-1 for driving the first mounting base 609-1 to slide in the up-and-down direction.

The first mounting seat 609-1 is driven to slide by the third driver 6011, so that the first mounting seat 609-1 can be automatically adjusted without manual adjustment, the adjustment efficiency is improved, the adjustment precision can be increased, and the labor intensity of workers is reduced.

Optionally, the third driver 6011 includes a driving motor, a turbine, a worm, and a limiting seat, and the driving motor is disposed on the supporting seat 609-2; the turbine is connected with the output end of the motor; the worm is meshed with the worm wheel; the limiting seat is fixed on the first mounting seat 609-1, and a spiral groove matched with the spiral teeth of the worm is formed in the inner annular surface of the limiting seat.

The driving end of the driving motor enables the turbine to rotate, the worm meshed with the turbine rotates, and the limiting seat moves in the up-and-down direction, so that the first mounting seat 609-1 is driven to move. The worm is connected with the first mounting seat 609-1 through a limiting seat, so that the first mounting seat 609-1 does not rotate along with the worm in the moving process, and the stability of the first mounting seat 609-1 is ensured.

In some embodiments, referring to fig. 2 to 4, the first mounting seat 609-1 includes a first mounting member 609-102 slidably connected to the supporting seat 609-2 and a second mounting member 609-101 rotatably connected to the first mounting member 609-102, the second mounting member 609-101 can rotate around an axis parallel to the conveying path, and the oblique insertion roller 608 is rotatably connected to the second mounting member 609-101.

The second mounting member 609-101 can rotate in a plane perpendicular to the conveying plane, when tube blanks 13 with different sizes are produced, different dies are usually adopted, contact blind points of the dies and the dies are changed, and the rotating second mounting member 609-101 can enable the inclined insertion roller 608 to be suitable for different blind point areas, so that the application range of the device is expanded.

In some embodiments, referring to fig. 2 to 4, the first mounting member 609-102 is provided with an arc-shaped sliding groove 6015, and the second mounting member 609-101 is provided with an arc surface adapted to the arc-shaped sliding groove 6015, so as to guide the rotation of the second mounting member 609-101.

The cambered surface of the second mounting piece 609-shaped and-folded-wall 101 can slide in the arc-shaped sliding groove 6015, so that the second mounting piece 609-shaped and-folded-wall 101 can rotate around an axis parallel to the conveying path, and meanwhile, the rotation of the second mounting piece 609-shaped and-folded-wall 101 can be guided, and the deviation of the second mounting piece 609-shaped and-folded-wall 101 from the preset path is avoided. The angle adjusting mechanism is simple in structure, simplifies the connecting structure and the connecting part, is convenient to adjust, and improves the angle adjusting efficiency.

In some embodiments, referring to fig. 2 to 4, the arc chute 6015 is provided with a strip opening 6014 along the rotation direction of the second mounting member 609-.

The slide bar 6013 can slide along the arc-shaped slide groove 6015 in the strip-shaped opening 6014, and the slide bar 6013 is driven to slide by the fourth driver 6012, so that the second mounting members 609 and the tube 101 can rotate around an axis parallel to the conveying path to adjust the angle between the two second mounting members 609 and the tube 101, and the two oblique insertion rollers 608 can support tube 13 with different sizes.

Optionally, the fourth driver 6012 is an air cylinder, a driving end of the air cylinder is hinged to the slide bar 6013, and the slide bar 6013 can slide along the strip-shaped opening 6014 when the driving end is extended or retracted.

In some embodiments, not shown, the slide bar 6013 is provided with a latch, and a driving end of the fourth driver 6012 is connected with a gear capable of engaging with the latch.

The fourth driver 6012 drives the gear to rotate, so that the slide bar 6013 engaged therewith rotates to realize the slide of the slide bar 6013 along the arc-shaped slide groove 6015. The slide bar 6013 is driven to rotate in a gear meshing mode, the position of the slide bar 6013 can be accurately adjusted, the slide bar 6013 is positioned at a designated position and is stable and not prone to moving, and the situation that the inclined insertion rollers 608 affect supporting of the tube blank 13 due to movement of the slide bar 6013 in work is avoided.

In some embodiments, referring to fig. 2 to 4, the second mounting member 609-.

The inclined insertion roller 608 is arranged in the installation space, the first fixing block 609 and the second fixing block 104 are not affected when the inclined insertion roller 608 rotates, and when the first fixing block 609 and the second fixing block 104 slide along the sliding groove, the inclined insertion roller 608 can slide along with the first fixing block 609 and the second fixing block 104, so that the angle of the inclined insertion roller 608 is adjusted. The device adopts a simple structure to realize the adjustment of the angle of the inclined insertion roller 608, and simultaneously, the connection relation between the inclined insertion roller 608 and the mounting block 609 and the mounting block 103 is not influenced.

Optionally, bearings are respectively disposed at two ends of the oblique insertion roller 608, and the mounting block 609 and 103 are connected with the bearings through bearing seats, so that the mounting block 609 and 103 are not affected while the oblique insertion roller 608 rotates.

In some embodiments, referring to fig. 6 to 9, the second finishing unit 7 includes two lining rollers 701 rotatably disposed on the frame 12, the two lining rollers 701 are symmetrically disposed along the conveying path, the axes of the lining rollers 701 are perpendicular to the conveying path, and the lining rollers 701 are configured to abut against the inner surface of the tube blank 13.

The two lining rollers 701 are respectively connected with the frame 12, the two lining rollers 701 are symmetrically arranged to respectively apply pressure to two opposite sides of the inner wall of the tube blank 13, support is provided for a blind spot area of the tube blank 13 in contact with a mold, the phenomenon that the blind spot area of the tube blank 13 in contact with the mold collapses due to extrusion is avoided, and the qualified rate of the tube blank 13 after molding is improved.

In some embodiments, referring to fig. 6 to 9, the second precision forming unit 7 further includes two connecting assemblies, which are rotatably connected to the frame 12 and are respectively rotatably connected to the two lining rollers 701, and the connecting assemblies can drive the lining rollers 701 to rotate around an axis parallel to the conveying path;

the connecting assembly rotates around an axis parallel to the conveying path, so that the lining rollers 701 synchronously rotate along with the connecting assembly, the included angle between the two lining rollers 701 can be adjusted, the connecting assembly is suitable for tube blanks 13 in different sizes and different blind spot areas, the application range is expanded, the lining rollers 701 do not need to be replaced when the tube blanks 13 in different sizes are produced, and the production cost is reduced.

In some embodiments, referring to fig. 6 to 9, the connecting assembly includes a rotating gear 703 and a second fixing block 702, the rotating gear 703 is rotatably connected to the frame 12; the second fixed block 702 is fixedly connected to the rotating gear 703, and the lining roller 701 is rotatably connected to the second fixed block 702; wherein the rotary gears 703 on the two coupling assemblies mesh.

The rotating gears 703 on the two connecting assemblies are meshed, when one rotating gear 703 is rotated, the other rotating gear 703 rotates synchronously, so that the rotating angles of the two rotating gears 703 are consistent, the two lining rollers 701 are ensured to be symmetrically arranged all the time, and the adjusting precision is improved. The lining roller 701 is connected with the rotating gear 703 through the second fixing block 702, so that the mounting stability of the lining roller 701 is improved.

Optionally, one of the rotating gears 703 is connected to a motor, and the motor drives the rotating gear 703 to rotate.

In some embodiments, referring to fig. 10 to 13, the open-close flat roller unit 3 includes a plurality of sets of forming modules sequentially disposed on the frame 12 along the conveying direction, each forming module includes a second upper roller assembly, a second lower roller assembly and a second side roller assembly, the second upper roller assembly is disposed on the frame 12 with a fourth path as a rotation axis, the second upper roller assembly can slide on the frame 12 along the up-down direction, the fourth path is perpendicular to the conveying direction and also perpendicular to the up-down direction, the second upper roller assembly has a second positioning mechanism capable of moving along the fourth path, and the second positioning mechanism abuts against two side edges of an opening on the tube blank 13; the second lower roller assembly is arranged on the machine frame 12 by taking a fifth path as a rotating shaft center and is positioned below the second upper roller assembly, the fifth path is parallel to the fourth path, the second lower roller assembly is also in sliding fit with the machine frame 12 along the up-down direction, and the second lower roller assembly is used for providing supporting force for the bottom of the tube blank 13; the second side roller assembly is provided with two second side roller shafts 308, the two second side roller shafts 308 are both rotatably arranged on the frame 12 by taking a sixth path as an axis, the sixth path is parallel to the up-down direction, the two second side roller shafts 308 are symmetrically arranged by taking the conveying path as a symmetry axis, the two second side roller shafts 308 are also in sliding fit with the frame 12 in the direction parallel to the fourth path, and the two second side roller shafts 308 are used for applying extrusion force to two side surfaces of the tube blank 13.

The second positioning mechanism of the second upper roll component can adjust the opening and closing distance according to the opening size required by the tube blank 13, and the opening of the tube blank 13 is gradually gathered in the forming process until the opening is abutted with the second positioning mechanism, so that the size of the opening formed by the tube blank 13 can meet the requirement. The second lower roller assembly can support the bottom of the tube blank 13, and the second upper roller assembly and the second lower roller assembly can move up and down according to the size of the processed tube blank 13, so that the lower roller assembly is suitable for processing tube blanks 13 with different sizes. The two second side roller shafts 308 respectively clamp the two sides of the tube blank 13, so that the two sides of the tube blank 13 form arc surfaces, and the distance between the two second side roller shafts 308 is adjusted according to the size requirement of the tube blank 13 to be processed, so that the tube blank 13 is suitable for different size requirements. This device can adjust the interval between roller assembly and the second roller assembly down according to the production requirement on the second, also can adjust the interval between two second side roller axle 308 simultaneously, makes the outer peripheral face of pipe 13 form smooth mellow and graceful arcwall face, and second positioning mechanism can require along self axial slip according to the opening of pipe 13 to be applicable to different openings. The structure can produce tube blanks 13 with different sizes, does not need to replace each part, reduces the production cost and can meet various production requirements.

In some embodiments, referring to fig. 10 to 13, the second lower roller assembly includes a second support frame 309, a second mounting bracket 305, and a second lower roller shaft 306, the second support frame 309 being connected to the frame 12; the second mounting bracket 305 is slidably connected to the second support bracket 309 in the up-down direction; the second down roller 306 is rotatably connected to the second mounting bracket 305 around the fifth path.

In this embodiment, the second lower roll shaft 306 and the second upper roll assembly can respectively clamp and position the upper side and the lower side of the tube blank 13, so that the tube blank 13 forms an arc-shaped surface, the second lower roll shaft 306 is rotatably connected to the second mounting frame 305, friction force on the tube blank 13 can be reduced in the conveying process of the tube blank 13, and the tube blank 13 is prevented from being worn. Second mounting bracket 305 is along upper and lower direction sliding connection in the support frame, can adjust the height of second lower roller 306 to adjust the interval between second roller assembly and the second lower roller 306 according to not unidimensional pipe billet 13, need not to change second lower roller 306 when processing not unidimensional pipe billet 13, reduced manufacturing cost.

In some embodiments, referring to fig. 10 to 11, the second lower roller assembly further includes a fifth driver 307 disposed on the second support frame 309, and the fifth driver 307 is connected to the second mounting frame 305 for driving the second mounting frame 305 to slide.

The fifth driver 307 can drive the second mounting rack 305 to slide along the up-down direction, so that manual adjustment is not needed, and manpower consumed by adjusting the second mounting rack 305 is reduced.

Optionally, the fifth driver 307 is a pneumatic cylinder.

Optionally, the fifth driver 307 includes a driving motor, a turbine, a worm, and a limiting seat, and the driving motor is disposed on the second support frame 309; the turbine is sleeved at the output end of the driving motor; the worm is meshed with the worm wheel and is rotatably connected with the frame 12; the limiting seat is fixed on the second mounting frame 305, and a spiral groove matched with the spiral teeth of the worm is formed in the inner annular surface of the limiting seat.

In some embodiments, referring to fig. 10 to 13, the second upper roller assembly includes two second connecting blocks 3010, a second upper roller shaft 302 and a sixth driver 3011, the two second connecting blocks 3010 are respectively connected to the frame 12 in a sliding manner in an up-down direction; two ends of the second upper roller shaft 302 are respectively connected with two second connecting seats 3010, the second upper roller shaft 302 is rotatably connected to the two second connecting seats 3010 by taking a fourth path as an axis, and the two second positioning mechanisms are respectively connected to the second upper roller shaft 302; the sixth driver 3011 is disposed on the frame 12, and connected to one of the second connecting blocks 3010, and configured to drive the second connecting block 3010 to slide in the up-down direction.

The sixth driver 3011 drives the second connecting seat 3010 to slide in the up-and-down direction, so as to adjust the height of the second upper roller shaft 302, and meet the requirements of production and processing of different-size tube blanks 13. Through setting up one of them second connecting seat 3010 of a sixth driver 3011 drive and slide, because two second connecting seats 3010 all are connected with second upper roll axle 302 to make another second connecting seat 3010 synchronous slip, guarantee that the axis of second upper roll axle 302 has reduced the energy consumption along second route setting all the time, compare in adopting two sixth drivers 3011 to drive two second connecting seats 3010 respectively.

Optionally, the sixth driver 3011 includes a motor and a lead screw, a nut on the lead screw is connected to the second connecting seat 3010, and the motor drives the screw of the lead screw to rotate, so that the thread moves up and down along the screw.

In some embodiments, referring to fig. 10 to 13, the second positioning mechanism includes a second mounting seat 303 and a positioning roller 304, the second mounting seat 303 is connected to an end of the second upper roller shaft 302 and has a receiving cavity with a downward opening; the registration rollers 304 are provided in the housing chamber so as to rotate about the fourth path, the registration rollers 304 are partially positioned in the housing chamber, and the lower portions of the registration rollers 304 are configured to abut against the opening side edges of the mother tube 13.

The positioning rollers 304 are partially located in the accommodating cavities, which facilitate heat dissipation when a large amount of heat is generated by the friction between the positioning rollers 304 and the tube blank 13. Simultaneously with the both ends of registration roller 304 respectively with hold the inner wall connection in chamber, can protect registration roller 304 not influenced or damaged by external environment, improve registration roller 304's life.

In some embodiments, not shown in the drawings, two ends of the positioning roller 304 are respectively rotatably connected with a sliding seat, the sliding seat is slidably disposed in the accommodating cavity along the up-down direction, and is connected with the seventh driver 301, and the seventh driver 301 is disposed on the frame 12 for driving the sliding seat to slide along the up-down direction.

The seventh driver 301 drives the positioning rollers 304 to slide in the accommodating cavity in the vertical direction, so that the height of each positioning roller 304 can be independently adjusted, the adjusting range is expanded, the adjusting precision of the positioning rollers 304 can be improved, the positioning rollers 304 can be replaced to position and abut against the opening of the blank 13, and the product processing precision is guaranteed.

Optionally, the seventh driver 301 may be an air cylinder or a motor, and when the seventh driver 301 is a motor, a screw structure is further included to connect the sliding seat and the motor.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.