CN212884233U

CN212884233U - Precision straightening unit for thin-wall metal pipe

Info

Publication number: CN212884233U
Application number: CN202021536969.8U
Authority: CN
Inventors: 赵晓东; 楚志兵; 李玉贵; 沈卫强; 高虹; 帅美荣; 李亚杰
Original assignee: Taiyuan University of Science and Technology
Current assignee: Taiyuan University of Science and Technology
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-04-06
Anticipated expiration: 2030-07-29

Abstract

The utility model discloses a thin wall metal tubular product precision straightening unit, including tubular product entry conveyor, infrared sensing device, guide device, aligning main part device and tubular product export conveyor, aligning main part device is including the main frame, be provided with five groups aligning unit in the main frame, aligning unit is all including last roll system mechanism and the lower roll system mechanism that corresponds the setting from top to bottom, go up roll system mechanism and lower roll system mechanism and realize the anti-bending volume and the flattening volume of tubular product aligning in-process, go up roll system mechanism and lower roll system mechanism and drive the synchronous up-and-down motion of worm gear subassembly drive through the adjusting motor, form five groups aligning unit elevation differences and carry out the opening degree adjustment according to different tubular product specifications to satisfy the raw materials requirement of different bending forms. The utility model provides a thin wall metal tubular product precision straightening unit improves the production efficiency of thin wall tubular product, and then improves the economic benefits of enterprise.

Description

Precision straightening unit for thin-wall metal pipe

Technical Field

The utility model relates to a thin wall metal tubular product aligning equips technical field, especially relates to a thin wall metal tubular product precision straightening unit.

Background

The metal thin-wall pipe is applied to multiple fields of life at present, residual stress and high-temperature annealing treatment can be generated in the production process of the steel pipe, so that the quality of the pipe is poor due to uneven distribution of the internal stress of the pipe, the deformed steel pipe needs to be straightened, the product quality is further improved, the large quantity of demands of national economy on yield are met, and certain requirements are met for the production and straightening efficiency of the thin-wall pipe. As the traditional thin-wall straightener has few straightening units, the forward and reverse bending processes in the straightening process are limited, and the bending rate in the whole process cannot be adjusted, the bending effect in the straightening process of the thin-wall metal pipe with multiple varieties and specifications is poor, and the product precision is difficult to ensure. In addition, because the rigidity of the metal thin-wall pipe product is low, the straightening mode of fixing the bending curvature is very easy to generate a whipping phenomenon in the straightening process, and the pipe and the input device generate strong impact, the traditional structural form is very easy to generate danger, the economic benefit of an enterprise is directly influenced, and the requirement of the existing production enterprise for producing the high-precision thin-wall pipe quickly and efficiently can not be met. Therefore, manufacturers for producing thin-walled tubes urgently need a high-precision thin-walled tube straightening unit, so that the production efficiency of the thin-walled tubes is improved, and the economic benefit of enterprises is further improved.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects and shortcomings of the prior art, the thin-wall metal pipe precision straightening unit is provided, the production efficiency of the thin-wall pipe is improved, and the economic benefit of an enterprise is further improved.

For realizing the utility model aims at providing a thin wall metal tubular product precision straightening unit, including tubular product entry conveyor, infrared sensing device, guide device, aligning main part device and tubular product export conveyor, aligning main part device is including the main frame, be provided with five aligning units in the main frame, aligning unit all includes last roll system mechanism and lower roll system mechanism that corresponds the setting from top to bottom, go up roll system mechanism and lower roll system mechanism and realize the anti-bending volume and the flattening volume of tubular product aligning in-process, go up roll system mechanism and lower roll system mechanism and drive the synchronous up-and-down motion of worm gear subassembly drive through the adjustment motor, form five aligning unit elevation differences and carry out the aperture adjustment according to different tubular product specifications to satisfy the raw materials requirement of different bending forms.

As a further improvement of the above scheme, the upper roll system mechanism and the lower roll system mechanism are the same in structure and respectively comprise a straightening roll position adjusting motor, the straightening roll position adjusting motor is mounted on the mounting frame, the output end of the straightening roll position adjusting motor is connected with a transmission lead screw in a transmission manner, a nut is rotatably connected onto the transmission lead screw, the nut is fixedly connected with a lifting cross beam, the lifting cross beam is rotatably connected with a turntable, the turntable is rotatably connected with a straightening roll, the angle of the straightening roll is controlled by an angle adjusting oil cylinder, an angle locking cylinder is arranged on the lifting cross beam, and the output end of the angle locking cylinder penetrates through the lifting cross beam and is connected with the turntable.

As a further improvement of the scheme, guide grooves are formed in two sides of the lifting cross beam, and a rack prestress rod is arranged on the mounting frame corresponding to the guide grooves.

As a further improvement of the scheme, a balance locking cylinder is arranged on the mounting frame, and the output end of the balance locking cylinder is connected with the lifting beam.

As a further improvement of the scheme, the pipe inlet conveying device and the pipe outlet conveying device both comprise a conveying rack and a conveying cross beam, one side of the conveying rack is provided with a conveying driving oil cylinder, the output end of the conveying driving oil cylinder is hinged with a driving arm, the middle part of the driving arm is hinged to one side of the conveying rack, the outer end of the driving arm is provided with a lifting mounting groove, a connecting seat is arranged on the conveying cross beam, the upper end of the connecting seat is arranged in the lifting mounting groove, a mounting frame is arranged on the conveying cross beam, a transverse transmission chain is arranged on the mounting frame and sleeved on a transmission shaft, the transmission shaft is connected with a guide roller wheel used for supporting a pipe, and the transmission shaft is driven by a conveying motor.

As a further improvement of the scheme, one side of the conveying rack is provided with a plurality of driving arms in parallel, and the plurality of driving arms are hinged and linked through a horizontal connecting rod.

As a further improvement of the above scheme, the conveyer frame top is provided with tubular product stop gear, tubular product stop gear is including bracket, upset hydro-cylinder, the bracket comprises fixed circular arc base and upset circular arc base two parts, fixed circular arc base is articulated with the one end of upset circular arc base to the two cross-section respectively accounts for the quarter of bracket, three quarters, form the cylindrical cavity that is used for restricting tubular product removal behind fixed circular arc base and the closed of upset circular arc base, the cylindrical cavity runs through the front and back terminal surface of bracket, the upper end of upset circular arc base with the output of upset hydro-cylinder is articulated, the height of the inside arc surface of fixed circular arc base corresponds the setting with the height of guide roller wheel.

As a further improvement of the scheme, one side of the conveying rack is provided with a feeding rack which inclines downwards, and the tail end of the feeding rack is correspondingly arranged above the fixed arc base and the guide roller wheel.

As a further improvement of the scheme, one side of the feeding rack is provided with a stop block used for limiting the rolling of the pipe, and the stop block is driven by a driving motor and a link mechanism.

As a further improvement of the above scheme, the guide device comprises a pair of pressing plates symmetrically arranged about the opening, the pressing plates are in threaded assembly with a threaded rod, and the threaded rod is driven by a speed reduction motor; the lower ends of the pair of pressing plates are hinged with the output end of the bidirectional hydraulic cylinder, and the angle between the two pressing plates is controlled through the bidirectional hydraulic cylinder.

The utility model has the advantages that:

compared with the prior art, the utility model provides a pair of thin wall metal tubular product precision straightening unit, be provided with five straightening units in the main frame, the straightening unit is all including last roller system mechanism and the lower roll system mechanism that corresponds the setting from top to bottom, go up the roller system mechanism and realize the recurvation volume and the flattening volume of tubular product aligning in-process with the lower roll system mechanism, go up roller system mechanism and lower roll system mechanism and drive the synchronous up-and-down motion of worm gear subassembly drive realization through the adjusting motor, form five straightening unit elevation differences of group and carry out the aperture adjustment according to different tubular product specifications, through the cooperation between multiunit upper roll system mechanism and the lower roll system mechanism, can make tubular product in the aligning process, the positive and negative bending in-process, the adjustment bending rate, be applicable to the polytype, the aligning of many specifications metal thin wall tubular product.

Drawings

The following detailed description of embodiments of the invention is provided in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic top view of the present invention;

fig. 2 is a schematic view of the structure of the present invention;

FIG. 3 is a top view of a portion of the tube inlet conveyor of the present invention;

FIG. 4 is a front view of a portion of the tube inlet conveyor of the present invention;

FIG. 5 is a schematic view of the structure A-A of FIG. 4;

fig. 6 is a schematic front view of the position guide device of the present invention;

FIG. 7 is a schematic view of the structure A-A of FIG. 6;

FIG. 8 is a schematic view of the structure B-B of FIG. 6;

FIG. 9 is a view from direction D of FIG. 6;

FIG. 10 is a front view schematically showing the structure of the main straightening device of the present invention;

FIG. 11 is a schematic view of an upper roller system mechanism of the present invention;

fig. 12 is a schematic top view of the pipe outlet conveying device according to the present invention;

fig. 13 is a schematic front view of the pipe outlet conveying device of the present invention;

FIG. 14 is a schematic view of the structure A-A of FIG. 13;

FIG. 15 is a schematic view of the structure B-B of FIG. 13;

FIG. 16 is a view showing the straightening effect of the present invention, wherein (a) is a view showing the effect of positive and negative bending at a non-zero position; (b) is an effect graph of unilateral bending non-zero position; (c) the effect diagram is shown when the zero position is positively and negatively bent; (d) the effect diagram is shown when the zero position is bent at one side.

Detailed Description

As shown in fig. 1-16, the utility model provides a thin-walled metal tube precision straightening unit, including tubular product entry conveyor 100, infrared sensing device 200, guide device 300, straightening main unit 400 and tubular product export conveyor 500, tubular product export conveyor 500's end is provided with flexible collection device 700, and flexible collection device 700 can select the cow hide cloth formula to collect the machine in specific embodiment, comprises motor and cow hide conveyer belt. The straightening main body device 400 comprises a main frame, five groups of straightening units are arranged in the main frame, the straightening units respectively comprise an upper roller system mechanism 2 and a lower roller system mechanism 3 which are arranged up and down correspondingly, the upper roller system mechanism 2 and the lower roller system mechanism 3 realize the bending amount and the flattening amount in the straightening process of the pipe 600, the upper roller system mechanism 2 and the lower roller system mechanism 3 drive a worm and gear assembly through an adjusting motor 1 to realize synchronous up-and-down movement, and elevation differences of the five groups of straightening units are formed so as to meet the raw material requirements of different bending forms.

The improved structure comprises an upper roller system mechanism 2 and a lower roller system mechanism 3, the upper roller system mechanism and the lower roller system mechanism are identical in structure and respectively comprise a straightening roller position adjusting motor 4, the straightening roller position adjusting motor 4 is installed on an installation frame 5, an output end of the straightening roller position adjusting motor 4 is connected with a transmission lead screw 6 in a transmission mode, a nut 7 is connected to the transmission lead screw 6 in a rotating mode, a lifting cross beam 8 is fixedly connected with the nut 7, the lower end of the lifting cross beam 8 is connected with a rotary table 9 in a rotating mode, the lower end of the rotary table 9 is connected with a straightening roller 10 in a rotating mode, the angle of the straightening roller 10 is controlled by an angle adjusting oil cylinder, an angle locking cylinder 11 is arranged on the lifting cross. Guide grooves are formed in two sides of the lifting cross beam 8, and a rack prestress rod 12 is arranged on the mounting frame 5 corresponding to the guide grooves. The mounting frame 5 is provided with a balance locking cylinder 13, and the output end of the balance locking cylinder 13 is connected with the lifting beam 8. The balance locking cylinder 13 contracts and tensions the lifting beam 8 when working, so that the gap between the transmission screw rod 6 and the nut 7 in the machining process can be reduced, and meanwhile, the high and low positions of the straightening roller 10 are fixed, so that the influence on the final product precision caused by the change of the high and low positions of the straightening roller 10 in the operation process is prevented.

Further improved, the pipe inlet conveying device 100 and the pipe outlet conveying device 500 both comprise a conveying rack 14 and a conveying beam 15, a conveying driving oil cylinder 16 is arranged on one side of the conveying rack 14, an output end of the conveying driving oil cylinder 16 is hinged with a driving arm 166, the middle part of the driving arm 166 is hinged on one side of the conveying rack 14, a lifting installation groove 17 is arranged at the outer end of the driving arm 166, a connecting seat 18 is arranged on the conveying beam 15, the upper end of the connecting seat 18 is arranged in the lifting installation groove 17, a placing frame 19 is arranged on the conveying beam 15, a transverse transmission chain 20 is arranged on the placing frame 19, the transverse transmission chain 20 is sleeved on a transmission shaft 21, the transmission shaft 21 is connected with a guide roller 22 for supporting the pipe 600, and the transmission shaft. A plurality of driving arms 166 are arranged in parallel on one side of the conveyor frame 14, and the plurality of driving arms 166 are hinged and linked through a horizontal connecting rod 24. When the conveying driving oil cylinder 16 works, the driving arm 166 is driven to rotate around the hinge point with the conveying rack 14, so that the connecting seat 18 and the conveying beam 15 in the lifting installation groove 17 are driven to move up and down, and the height positions of the transverse transmission chain 20 and the guide roller wheel 22 are adjusted.

Further improved, a pipe limiting mechanism is arranged above the conveying rack 14, the pipe limiting mechanism comprises a bracket and a turnover oil cylinder 26, the bracket is composed of a fixed arc base 251 and a turnover arc base 252, the fixed arc base 251 is hinged to one end of the turnover arc base 252, the cross sections of the fixed arc base 251 and the turnover arc base 252 respectively occupy one fourth and three fourths of the bracket, a cylindrical cavity 27 used for limiting the movement of the pipe 600 is formed after the fixed arc base 251 and the turnover arc base 252 are closed, the cylindrical cavity 27 penetrates through the front end face and the rear end face of the bracket, the upper end of the turnover arc base 252 is hinged to the output end of the turnover oil cylinder 26, and the height of the inner arc face of the fixed arc base 251 corresponds to the height of the guide. When the pipe 600 to be bent enters the fixed arc base 251, the overturning oil cylinder 26 acts to drive the overturning arc base 252 to rotate around a hinge point with the fixed arc base 251 to open the cavity, so that the pipe 600 to be bent enters the cavity.

In a further improvement, one side of the conveying frame 14 is provided with a feeding frame 28 which is inclined downwards, and the tail end of the feeding frame 28 is correspondingly arranged above the fixed arc base 251 and the guide roller wheel 22. The pipe 600 to be bent placed on the conveyor frame 14 rolls off toward the fixed arc base 251 and the guide roller 22 by its own weight. A stop block 29 for limiting the rolling of the pipe 600 is arranged on one side of the feeding rack 28, and the stop block 29 is driven by a driving motor and a link mechanism.

In a further improvement, the guiding device 300 comprises a pair of pressing plates 30 symmetrically arranged about the opening, the pressing plates 30 are in threaded assembly with a threaded rod 31, and the threaded rod 31 is driven by a speed reduction motor 32; the lower ends of the pair of pressure plates 30 are hinged with the output end of the bidirectional hydraulic cylinder 33, and the angle between the two pressure plates 30 is controlled by the bidirectional hydraulic cylinder 33. The two pressing plates 30 can be driven to move towards or away from each other by acting on the threaded rod 31 through the speed reducing motor 32; the angle between the pair of pressing plates 30 can be made large by the action of the bidirectional hydraulic cylinder 33 to introduce the pipe 600 to be bent into the opening formed between the upper roller system mechanism 2 and the lower roller system mechanism 3.

As shown in fig. 16(a), the positive and negative bending non-zero bending is suitable for large elbows and pipes which are repeatedly bent in the axial direction;

as shown in fig. 16(b), the unilateral bending non-zero bending is suitable for large-elbow and axial unidirectional bending pipes;

as shown in fig. 16(c), the bending at the zero position of positive and negative bending is suitable for the pipe with small bend and repeated axial bending;

as shown in fig. 16(d), the bending with the zero position of unilateral bending is suitable for small elbows and pipes bent in axial direction and one way;

the above embodiments are not limited to the technical solutions of the embodiments themselves, and the embodiments may be combined with each other into a new embodiment. The above embodiments are only used for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of the technical solutions of the present invention.

Claims

1. A precision straightening unit for thin-wall metal pipes is characterized in that: including tubular product entry conveyor, infrared sensing device, guide device, aligning main part device and tubular product export conveyor, aligning main part device is including the main frame, be provided with five straightening units in the main frame, the last roller that the straightening unit all corresponds the setting from top to bottom is mechanism and lower roller system mechanism, go up roller system mechanism and lower roller system mechanism and realize the anti-bending volume and the flattening volume of tubular product aligning in-process, go up roller system mechanism and lower roller system mechanism and drive the synchronous up-and-down motion of worm gear subassembly drive through the adjusting motor, form five straightening unit difference elevations and carry out the opening degree adjustment according to different tubular product specifications to satisfy the raw materials requirement of different bending forms.

2. The precision straightening unit for the thin-wall metal pipe according to claim 1, characterized in that: go up roller system mechanism and lower roller system mechanism structure the same, all include straightening roller position adjustment motor, straightening roller position adjustment motor installs on the mounting bracket, the output transmission of straightening roller position adjustment motor is connected with the transmission lead screw, it is connected with the nut to rotate on the transmission lead screw, nut fixedly connected with lifting beam, lifting beam rotates and is connected with the carousel, the carousel rotates and is connected with the straightening roller, the straightening roller is by its angle of angular adjustment hydro-cylinder control, the last angle locking jar that is provided with of lifting beam, the output of angle locking jar passes lifting beam with the carousel is connected.

3. The precision straightening unit for the thin-wall metal pipe according to claim 2, characterized in that: guide grooves are formed in two sides of the lifting cross beam, and a rack prestress rod is arranged on the mounting frame corresponding to the guide grooves.

4. The precision straightening unit for the thin-wall metal pipe according to claim 3, characterized in that: the mounting frame is provided with a balance locking cylinder, and the output end of the balance locking cylinder is connected with the lifting beam.

5. The precision straightening unit for the thin-wall metal pipe according to claim 1, characterized in that: the pipe inlet conveying device and the pipe outlet conveying device comprise conveying racks and conveying cross beams, wherein one side of each conveying rack is provided with a conveying driving oil cylinder, the output end of each conveying driving oil cylinder is hinged with a driving arm, the middle part of each driving arm is hinged to one side of each conveying rack, the outer end of each driving arm is provided with a lifting mounting groove, a connecting seat is arranged on each conveying cross beam, the upper end of each connecting seat is arranged in each lifting mounting groove, a mounting frame is arranged on each conveying cross beam, a transverse transmission chain is arranged on each mounting frame and sleeved on a transmission shaft, the transmission shaft is connected with a guide roller wheel used for supporting a pipe, and the transmission shaft is driven by a conveying motor.

6. The precision straightening unit for the thin-wall metal pipe according to claim 5, characterized in that: a plurality of driving arms are arranged on one side of the conveying rack in parallel and are hinged and linked through a horizontal connecting rod.

7. The precision straightening unit for the thin-wall metal pipe according to claim 6, characterized in that: carry the frame top to be provided with tubular product stop gear, tubular product stop gear is including bracket, upset hydro-cylinder, the bracket comprises fixed circular arc base and upset circular arc base two parts, fixed circular arc base is articulated with the one end of upset circular arc base to the two cross-section respectively accounts for the quarter of bracket, three fourths, form the cylindrical cavity that is used for restricting tubular product removal after fixed circular arc base and the closed of upset circular arc base, the cylindrical cavity runs through the front and back terminal surface of bracket, the upper end of upset circular arc base with the output of upset hydro-cylinder is articulated, the height of the inside arc surface of fixed circular arc base corresponds the setting with the height of leading the running roller wheel.

8. The precision straightening unit for the thin-wall metal pipe according to claim 7, characterized in that: one side of the conveying rack is provided with a feeding rack which inclines downwards, and the tail end of the feeding rack is correspondingly arranged above the fixed arc base and the guide roller wheel.

9. The precision straightening unit for the thin-wall metal pipe according to claim 8, characterized in that: and a stop block used for limiting the rolling of the pipe is arranged on one side of the feeding rack and is driven by a driving motor and a connecting rod mechanism.

10. The precision straightening unit for the thin-wall metal pipe according to claim 1, characterized in that: the guide device comprises a pair of pressing plates symmetrically arranged relative to the opening, the pressing plates are in threaded assembly with a threaded rod, and the threaded rod is driven by a speed reduction motor; the lower ends of the pair of pressing plates are hinged with the output end of the bidirectional hydraulic cylinder, and the angle between the two pressing plates is controlled through the bidirectional hydraulic cylinder.