CN114011997A - Rotary straightening roller provided with steel ball and steel ball ring combined straightening block - Google Patents
Rotary straightening roller provided with steel ball and steel ball ring combined straightening block Download PDFInfo
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- CN114011997A CN114011997A CN202111305231.XA CN202111305231A CN114011997A CN 114011997 A CN114011997 A CN 114011997A CN 202111305231 A CN202111305231 A CN 202111305231A CN 114011997 A CN114011997 A CN 114011997A
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- straightening
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
- B21F1/02—Straightening
Abstract
The invention relates to a rotary straightening roll provided with a straightening block formed by combining a steel ball and a steel ball ring, which belongs to a steel bar straightening and cutting machine and is characterized by comprising an upper block body, an upper cover plate, a rear upper through hole, a front upper through hole, a lower block body, a lower cover plate, a rear lower through hole, a front lower through hole, a circular ring groove plate, steel balls, a sealing ring and a baffle plate, wherein the upper straightening block and the lower straightening block are same in structure and are symmetrically arranged, the upper straightening block is divided into the upper block body and the upper cover plate, the lower straightening block is divided into the lower block body and the lower cover plate, the rear upper through hole and the front upper through hole are arranged on the upper block body, the rear lower through hole and the front lower through hole are arranged on the lower block body, the steel balls, the circular ring groove plate and the steel balls are arranged in the through holes, no matter whether the straightening block rotates around the steel bar or the steel bar axially moves, all rolling friction between the straightening block and the steel bar is reduced, and the abrasion between the straightening block and the steel bar is reduced, the power loss of reinforcing steel bar straightening is reduced, the service life of the straightening block is prolonged, and the straightening quality of the reinforcing steel bar is improved.
Description
Technical Field
The invention belongs to a steel bar straightening and cutting machine, and particularly relates to a rotary straightening roller of the steel bar straightening and cutting machine.
Background
The steel bar straightening mechanism in the existing steel bar straightening and cutting machine is generally divided into two types:
the first type is a reinforcing steel bar straightening mechanism provided with staggered rolling straightening wheels, in practical application, in order to improve the quality of reinforcing steel bar straightening, two or more groups of staggered rolling straightening wheels are often adopted, and the reinforcing steel bar straightening mechanism has the advantages that: the damage and the torsion on the surface of the steel bar are small, but the defects are that: the straightness of the straightened straight bar of the steel bar is relatively poor, because the steel bar can be bent in any direction of 360 degrees, but the straightening mechanism of the steel bar can only straighten the steel bar in one or more directions, so the straightness of the straightened straight bar of the steel bar is relatively poor, and the straightening mechanism of the steel bar is not generally adopted in places with high requirements on the straightness of the straight bar of the steel bar.
The second type is a reinforcing steel bar straightening mechanism adopting a rotary straightening roller, and the method has the advantages that: the straightness of the straightened straight bar of the steel bar is ideal, and the straightness of the straightened straight bar of the steel bar is ideal because the rotating straightening roller straightens the steel bar in the direction of 360 degrees.
At present, there are three types of mechanisms for straightening blocks installed in the rotating straightening roll:
firstly, a sliding hole mode straightening block mechanism; secondly, a rolling hole mode straightening block mechanism; and thirdly, an inclined roller type straightening mechanism.
Wherein:
a sliding hole mode straightening block mechanism is characterized in that a plurality of groups (such as five groups) of sliding hole mode straightening blocks are arranged in a rotary straightening roll (which indicates that the sliding hole mode straightening blocks can be divided into an integral type, a split type and a semi-open type), and reinforcing steel bars penetrate through inner holes of the sliding hole mode straightening blocks for straightening.
Firstly, the reinforcing steel bars are bent into a certain shape by each sliding hole mode straightening block, then the reinforcing steel bars are repeatedly bent into reinforcing steel bar straight bars for multiple times in the rotating straightening rollers through the rotation of the rotating straightening rollers, and the sliding hole mode straightening blocks have the advantages of simple structure, easy realization of dynamic balance of the rotating straightening rollers and capability of greatly improving the straightening speed of the reinforcing steel bars on the premise of ensuring the straightening quality of the reinforcing steel bars.
However, the disadvantages of the sliding hole mode straightening block are also quite obvious: when the rotating straightening roller rotates, the sliding hole mode straightening block is driven to rotate together, and the steel bar does not rotate, so that sliding friction is generated on the surfaces of the hole die and the steel bar on the sliding hole mode straightening block in the relative sliding and sliding processes, and larger abrasion is caused, so that the service life of the sliding hole mode straightening block is short, and a large part of power is consumed in useless abrasion.
Secondly, a rolling hole mode straightening block mechanism: the method is equivalent to installing a rolling bearing outside the sliding hole mode straightening block, and has the advantages that the relative sliding state between the die hole of the original sliding hole mode straightening block and the surface of the reinforcing steel bar is changed into a relative rolling state, so that the abrasion is greatly reduced; but the disadvantages are: because the rolling bearing is arranged outside the sliding hole mode straightening block, the rolling hole mode straightening block can only adopt an integral hole die structure, when the integral hole die structure is in actual use, as the steel bars are broken sometimes in the straightening process, and often a plurality of broken steel bars are simultaneously blocked in the die holes, the integral hole die structure is difficult to process due to the faults, and sometimes the whole rotary straightening roller is even scrapped, so the rolling hole mode straightening block structure is hardly used in practice.
Thirdly, an inclined roll type straightening mechanism: that is, a plurality of oblique rollers are arranged in the rotary straightening roller, and the oblique rollers can rotate, so that the advantages of the mechanism are the same as those of a rolling hole mode straightening block mechanism, the abrasion between the oblique rollers and the reinforcing steel bars is small, but the disadvantages are that: because the inclined roll has larger volume, the diameter of the rotary straightening roll is increased and the dynamic balance is difficult to realize, the rotating speed of the rotary straightening roll is reduced, and the straightening speed of the reinforcing steel bar is lower.
To solve the above problems of the steel bar straightening mechanism with a rotating straightening roller, the inventor has proposed a patent technology of "a rotating straightening roller with a double-roller or multi-roller straightening block" (see the patent of the invention in China, the patent number is CN201410359794.0), in which four roller shafts and four rollers are installed on an upper straightening block and a lower straightening block which are symmetrically arranged and have the same structure, the rollers are respectively sleeved on the roller shafts, a rolling bearing is installed between the rollers and the roller shafts, a channel for passing the steel bar is formed by gaps between the four rollers, when the rotating straightening roller rotates, the upper straightening block and the lower straightening block are driven to rotate together, at the moment, although the steel bar is not rotated, the rollers which are contacted with the steel bar rotate, so that rolling friction is formed between the rollers and the steel bar, on the one hand, when the steel bar is rotated, the straightening block with the double rollers or the multi-roller straightening block rotates radially around the steel bar, in this case, rolling friction is generated between the straightening block and the reinforcing bar, but on the other hand, the reinforcing bar is rapidly moved in the axial direction while the straightening block is rotated in the radial direction around the reinforcing bar. At this time, sliding friction still exists between the straightening block and the steel bar, which still brings certain abrasion to the straightening block and the steel bar and consumes partial power.
Disclosure of Invention
The invention aims to provide a rotating straightening roller provided with a straightening block formed by combining a steel ball and a steel ball ring, which is a new improvement on the original rotating straightening roller provided with a double-roller or multi-roller straightening block, has reasonable structure and safe and reliable use, and all rolling friction is generated between the straightening block and a steel bar no matter the straightening block rotates radially around the steel bar or the steel bar moves synchronously and axially, so that the friction loss between the straightening block and the steel bar is reduced to the maximum extent, the friction loss in the steel bar straightening process is reduced, the surface damage of the straightened steel bar is reduced to the minimum, the service life of the straightening block is further prolonged, and the straightening quality of the steel bar is further improved.
The purpose of the invention is realized by the following steps: a rotating straightening roll (called rotating straightening roll for short) provided with a straightening block formed by combining a steel ball and a steel ball ring comprises a straightening roll, a straightening block, a pressing device and a steel bar, wherein the straightening roll comprises a left roll shaft, a right roll shaft and a straightening roll body, the left roll shaft, the right roll shaft and the straightening roll body are integrally formed and provided with an axial central through hole, the steel bar penetrates through the central through hole, radial through holes with rectangular cross sections are radially formed in the straightening roll body from left to right at intervals, (the number and the size of the radial through holes are determined according to design), rectangular straightening blocks are installed in the radial through holes in a sliding fit manner, the upper end part and the lower end part of each straightening block are respectively provided with the pressing device (which can be pressing bolts: the upper end part and the lower end part of each radial through hole are respectively provided with internal threads and are provided with the pressing bolts), and the straightening blocks comprise the upper straightening block and the lower straightening block, the upper straightening block and the lower straightening block are symmetrically arranged and have the same structure, an axial steel bar through hole is formed in the center between the upper straightening block and the lower straightening block, a steel bar to be straightened penetrates through the axial steel bar through hole, and the upper straightening block or the lower straightening block is pressed on the steel bar by the pressing device (see figure 1), which is characterized in that: a rotary straightening roll provided with a straightening block combining a steel ball and a steel ball ring comprises an upper block body, an upper cover plate, a rear upper through hole, a front upper through hole, a lower block body, a lower cover plate, a rear lower through hole, a front lower through hole, a circular ring groove plate, a screw plug, a steel ball, a sealing ring, a baffle plate and a steel bar channel, wherein the upper straightening block and the lower straightening block are same in structure and are symmetrically arranged, the upper straightening block is divided into the upper block body and the upper cover plate, the upper block body and the upper cover plate are both rectangular, a rear downward inclined plane and a front downward inclined plane which form an inverted V-shaped included angle with each other are symmetrically arranged at the bottom of the upper block body, a rear upward inclined plane and a front upward inclined plane which form the inverted V-shaped included angle with each other are symmetrically arranged at the top of the upper block body, the rear downward inclined plane and the rear upward inclined plane are parallel to each other, the front downward inclined plane and the front upward inclined plane are parallel to each other, the inverted V-shaped included angle can be 90-120 degrees, rear upper through holes extending obliquely to the rear upper direction are uniformly distributed on a rear lower inclined plane of the upper block body from left to right, the rear upper through holes are step-shaped through holes with small lower section diameter and large upper section diameter, one to three rear upper through holes can be arranged on the rear lower inclined plane of the upper block body, the central lines of the rear upper through holes are in the same plane and are parallel to each other, the central lines of the rear upper through holes are vertical to the rear lower inclined plane, the diameter of the lower section of each rear upper through hole is larger than that of a steel ball, the steel ball is arranged in the lower section of each rear upper through hole, circular groove plates with downward openings of grooves are respectively fixed in the upper sections of the rear upper through holes, each circular groove plate comprises a plate body and a circular groove, the plate body is circular, the circular groove with an inverted U-shaped cross section is arranged on the circular surface of the plate body, the bottom of the U-shaped groove can be a right-angled plane or an arc surface, when a circular groove plate is installed, the opening of the groove is downward (namely, the forward downward direction), an internal thread is arranged in the upper end section of each rear upper through hole, a screw plug is arranged for pushing the circular groove plate, steel balls are arranged on the inner circumference of the circular groove on the circular groove plate, partial surfaces of the steel balls are exposed out of the circular groove plate to form a steel ball ring, the upper surface of each steel ball partially abuts against the steel ball ring, the lower surface of each steel ball partially exposes out of the rear upper through hole, meanwhile, front upper through holes which extend obliquely forward and upward are uniformly arranged on the front lower inclined plane of the upper block body from left to right, each front upper through hole is a stepped through hole with a small lower section diameter and a large upper section diameter, one to three front upper through holes can be arranged on the front lower inclined plane of the upper block body, the central lines of the front upper through holes are in the same plane and are parallel to each other, the central line of each front upper through hole is vertical to the front lower inclined plane, the diameter of the lower section of each front upper through hole is larger than that of the steel ball, the steel ball is arranged in the lower section of each front upper through hole, a circular groove plate with a downward opening of the groove is fixedly arranged in the upper section of each front upper through hole, the circular groove plate comprises a plate body and a circular groove, the plate body is in a circular ring shape, the circular groove with an inverted U-shaped cross section is arranged on the circular surface of the plate body, the bottom of the inverted U-shaped groove can be a right-angle plane or an arc surface, when the circular groove plate is installed, the opening of the groove is downward (namely, the downward direction is backward), an internal thread is arranged in the upper end section of each front upper through hole, the screw plug is used for pushing the circular groove plate, and the steel ball is arranged in the circular groove on the circular groove plate, the local surface of the steel ball is exposed out of the circular ring groove plate to form a steel ball ring, the upper surface of the steel ball is partially abutted against the steel ball ring, the lower surface of the steel ball is partially exposed out of the front upper through hole, an upper cover plate is fixedly arranged at the top of the upper block body by using bolts, a rear bottom inclined plane and a front bottom inclined plane which form an inverted V-shaped included angle with each other are symmetrically arranged at the bottom of the upper cover plate, the inverted V-shaped included angle at the bottom of the upper cover plate is correspondingly consistent with the inverted V-shaped included angle at the top of the upper block body, and the upper gland and the upper block body are correspondingly buckled into a whole to form an upper straightening block; (see FIG. 3, FIG. 4)
Similarly, the lower straightening block is divided into a lower block body and a lower cover plate, a rear bottom inclined plane and a front bottom inclined plane which are V-shaped included angles are symmetrically arranged at the bottom of the lower block body, a rear top inclined plane and a front top inclined plane which are V-shaped included angles are symmetrically arranged at the top of the lower block body, the rear bottom inclined plane is parallel to the rear top inclined plane, the front bottom inclined plane is parallel to the front top inclined plane, the angle of the V-shaped included angle is 90-120 degrees, rear lower through holes which obliquely extend backwards and downwards are uniformly distributed on the rear top inclined plane of the lower block body from left to right, each rear lower through hole is a stepped through hole with a large diameter lower section and a small diameter upper section, one to three rear lower through holes can be arranged on the rear top inclined plane of the lower block body, the central lines of the rear lower through holes are in the same plane and are parallel to each other, the central line of each rear lower through hole is vertical to the rear top inclined plane, the diameter of the upper section of each rear lower through hole is larger than that of the steel ball, the steel ball is arranged in the upper section of each rear lower through hole, a circular groove plate with an upward opening of the groove is fixedly arranged in the lower section of each rear lower through hole, the circular groove plate comprises a plate body and a circular groove, the plate body is circular, the circular surface of the plate body is provided with a circular groove with an inverted U-shaped cross section, the bottom of the inverted U-shaped groove can be a right-angled plane or a circular arc surface, the opening of the groove is upward (namely the forward upward direction) when the circular groove plate is installed, the lower end section of each rear lower through hole is provided with an internal thread and a screw plug, the screw plug is used for pushing the circular groove plate, the steel ball is arranged on the inner circumference of the circular groove on the circular groove plate, and the partial surface of the steel ball is exposed out of the circular groove plate, forming a steel ball ring, wherein the lower surface of the steel ball partially abuts against the steel ball ring, the upper surface of the steel ball partially exposes out of the rear lower through hole, meanwhile, front lower through holes extending obliquely forwards and downwards are uniformly distributed on a front top inclined plane of the lower block body from left to right, each front lower through hole is a step-shaped through hole with a large lower section diameter and a small upper section diameter, one to three front lower through holes can be arranged on the front top inclined plane of the lower block body, the central lines of the front lower through holes are in the same plane and are parallel to each other, the central lines of the front lower through holes are perpendicular to the front top inclined plane, the diameter of the upper section of each front lower through hole is larger than that of the steel ball, the upper section of each front lower through hole is provided with a circular ring groove plate with an upward opening, and the circular ring groove plate with an upward opening is fixed in the lower section of each front lower through hole, the circular groove plate comprises a plate body and a circular groove, the plate body is circular, the circular surface of the plate body is provided with a circular groove with an inverted U-shaped cross section, the bottom of the inverted U-shaped groove can be a right-angled plane or a circular arc surface, the opening of the groove is upward (namely, the upward backward direction) when the circular groove plate is installed, the lower end section of each front lower through hole is provided with an internal thread and is provided with a screw plug, the screw plug is used for pushing the circular groove plate, steel balls are arranged on the inner circumference of the circular groove on the circular groove plate, the partial surfaces of the steel balls are exposed out of the circular groove plate to form a steel ball ring, the lower surface of each steel ball partially abuts against the steel ball ring, the upper surface of each steel ball partially exposes out of the front lower through hole, the bottom of the lower block body is fixedly provided with a lower cover plate by a bolt, the top of the lower cover plate is symmetrically provided with a rear inclined plane and a front inclined plane which form a V-shaped included angle with each other, the V-shaped included angle of the top of the lower cover plate is correspondingly consistent with the V-shaped included angle of the bottom of the lower block body, and the lower cover plate and the lower block body are correspondingly buckled into a whole to form the lower straightening block. (see FIG. 3, FIG. 4)
The bottom of the upper block body (namely on the rear downward inclined plane and the front downward inclined plane) is fixedly provided with a baffle with a sealing ring which is abutted against the exposed local surface of the steel ball, and the top of the lower block body (namely on the rear top inclined plane and the front top inclined plane) is fixedly provided with a baffle with a sealing ring which is abutted against the exposed local surface of the steel ball, so that external impurities can be prevented from entering the rear lower through hole, the front lower through hole, the rear upper through hole and the front upper through hole, the steel ball can be blocked, the steel ball cannot slide out of the rear lower through hole, the front lower through hole, the rear upper through hole and the front upper through hole, the steel ball cannot slide out of the circular groove plate, and meanwhile, the steel ball can freely rotate on the steel ball ring.
In summary, the rear upper through hole, the front upper through hole, the rear lower through hole and the front lower through hole are the same in structure and are symmetrically arranged, the rear upper through hole, the rear lower through hole, the front upper through hole and the front lower through hole are the same in structure and are symmetrically arranged, and gaps among the steel balls arranged in the rear upper through hole, the front upper through hole, the rear lower through hole and the front lower through hole form a steel bar channel for penetrating and installing a steel bar to be straightened.
In addition, aiming at the rotary straightening roll provided with the straightening block combining the steel ball and the steel ball ring, the rear upper through hole, the front upper through hole, the rear lower through hole and the front lower through hole can be respectively arranged into cylindrical blind holes, and the rear lower through hole, the front lower through hole, the rear upper through hole and the front upper through hole are correspondingly arranged into the rear upper blind hole, the front upper blind hole, the rear lower blind hole and the front lower blind hole. And meanwhile, an annular groove is directly formed at the bottom of each blind hole, a steel ball is arranged in the annular groove to form a steel ball ring, then the steel ball is arranged in each blind hole, so that the local surface of one side of the steel ball is abutted against the steel ball ring at the bottom of the blind hole, and the local surface of the other side of the surface of the steel ball correspondingly exposes out of the rear upper blind hole, the front upper blind hole, the rear lower blind hole and the front lower blind hole. (the technical proposal has additionally applied for a utility model patent).
The invention provides a rotating straightening roller provided with a straightening block combining a steel ball and a steel ball ring, when the straightening roller is used for straightening, each steel ball arranged in a rear upper through hole and a front upper through hole or each steel ball arranged in a rear lower through hole and a front lower through hole is pressed on a steel bar to be straightened, so that when the rotating straightening roller rotates, the upper straightening block and the lower straightening block are driven to rotate together, and in the rotating process of the straightening roller, rolling friction is realized between the steel balls and the steel bar no matter the straightening block rotates around the steel bar in the radial direction or the steel bar moves in the synchronous axial direction, namely, all the steel balls and the steel bar are rolling friction generated between the upper straightening block and the lower straightening block and the steel bar, so that the friction loss and the power loss in the straightening process of the steel bar are obviously reduced, the surface damage of the straightened steel bar is minimized, the service life of the straightening block is further prolonged, and the straightening quality of the steel bar is further improved, and the consumption of electric power is remarkably reduced.
According to practical measurements, when straightening cold-rolled ribbed bars with a diameter of 14 mm, if the original fixed straightening block is used: firstly, because of abrasion, the diameter difference between the steel bar before straightening and the steel bar after straightening can often reach 0.4-0.5 mm, even larger, secondly, a four-stage asynchronous motor with the power of 37 kilowatt is needed, and the working current is 65-70 amperes when straightening is carried out; after the rotating straightening roll provided by the invention and provided with the straightening block with the steel ball and steel ball ring combination is adopted: the abrasion to the steel bar is greatly reduced, the diameter difference between the steel bar before straightening and the steel bar after straightening is less than 0.08 mm, the power of the four-stage asynchronous motor can be reduced to 22 kilowatts, and the working current during straightening is also reduced to 35-40 amperes.
Therefore, the rotating straightening roller provided with the straightening block with the steel ball and steel ball ring combination is very effective in reducing the abrasion of the steel bar and saving the power consumption when the steel bar is straightened.
In addition, when the broken steel bar is broken and blocked in the steel bar channel between the upper straightening block and the lower straightening block in the steel bar straightening process, the broken steel bar can be easily taken out only by separating the upper straightening block from the lower straightening block.
Because the upper straightening block and the lower straightening block are combined into a group and are symmetrically arranged in the straightening roller, the rotating straightening roller can easily realize dynamic balance, and thus, the straightening speed of the steel bar is greatly improved.
In addition, as the abrasion of the steel bar and the straightening block is reduced, the scrap iron and dust generated by abrasion are greatly reduced, and the working environment of workers is effectively improved.
The rotary straightening roller provided with the straightening block combining the steel balls and the steel ball ring has the advantages of reasonable structure, safety and reliability in use, effective reduction of the abrasion between the straightening block and the steel bar, improvement of the service life of the straightening block and the straightening quality of the steel bar, energy conservation, reduction of consumption and improvement of the working environment of workers.
The present invention provides a rotating straightening roll with a straightening block assembled by a steel ball and a steel ball ring, which is further described with reference to the attached drawings and examples.
Drawings
FIG. 1 is a schematic main sectional view of a rotating straightening roll with a straightening block assembled by a steel ball and a steel ball ring according to the present invention.
Fig. 2 is an enlarged schematic view of a-a section in fig. 1.
Fig. 3 is the piece 3-1 in fig. 2: upper straightening block and piece 3-2: an enlarged schematic view of a cross-sectional view of the lower straightening block (i.e., a partially enlarged schematic view of a cross-sectional view a-a).
FIG. 4 is the part 3-1-1 of FIG. 3: upper block and piece 3-1-2: schematic of a cross-sectional view of the upper cover plate.
Fig. 5 is a schematic view of the section B-B in fig. 4 in a rotated state.
In fig. 1 to 5:
1. the steel bar straightening machine comprises a steel bar 2, a straightening roller 3, a straightening block 3-1, an upper straightening block 3-1-1, an upper block 3-1-2, an upper cover plate 3-2, a lower straightening block 3-2-1, a lower block 3-2-2, a lower cover plate 4, a pressing device 5, a steel ball 6, a steel ball 7, a circular groove plate 8-1, a rear upper through hole 8-2, a front upper through hole 8-3, a rear lower through hole 8-4, a front lower through hole 9, a sealing ring 10, a baffle plate 11, a plug screw 12 and a steel bar channel
Detailed Description
As can be seen from fig. 1-5: a rotary straightening roll (called as a rotary straightening roll for short) provided with a straightening block formed by combining a steel ball and a steel ball ring comprises a straightening roll 2, a straightening block 3, a pressing device 4 and a steel bar 1, wherein the straightening roll 2 further comprises a left roll shaft, a right roll shaft and a straightening roll body, the left roll shaft, the right roll shaft and the straightening roll body are integrally formed and provided with axial central through holes, the steel bar 1 penetrates through the central through holes, radial through holes with rectangular cross sections are radially formed in the straightening roll body from left to right at intervals, (the number and the size of the radial through holes are determined according to design), the cuboid straightening block 3 is installed in each radial through hole in a sliding fit manner, the pressing device 4 is respectively arranged at the upper end part and the lower end part of the straightening block 3, (a pressing bolt can be used; the pressing bolt is respectively provided with internal threads and is configured on the upper end part and the lower end part of the radial through hole), the straightening block 3 comprises an upper straightening block 3-1 and a lower straightening block 3-2, the upper straightening block 3-1 and the lower straightening block 3-2 are symmetrically arranged and have the same structure, an axial steel bar through hole is formed in the center between the upper straightening block and the lower straightening block, a steel bar 1 to be straightened penetrates through the axial steel bar through hole, and the upper straightening block 3-1 or the lower straightening block 3-2 is pressed on the steel bar 1 by the pressing device 4 (see fig. 1), which is characterized in that: a rotary straightening roll provided with a straightening block formed by combining a steel ball and a steel ball ring comprises an upper block body 3-1-1, an upper cover plate 3-1-2, a rear upper through hole 8-1, a front upper through hole 8-2, a lower block body 3-2-1, a lower cover plate 3-2, a rear lower through hole 8-3, a front lower through hole 8-4, a circular groove plate 7, a screw plug 11, a steel ball 5, a steel ball 6, a sealing ring 9, a baffle plate 10 and a steel bar channel 12, wherein the upper straightening block 3-1 and the lower straightening block 3-2 are the same in structure and are symmetrically arranged, the upper straightening block 3-1 is divided into an upper block body 3-1-1 and an upper cover plate 3-1-2, and the upper block body 3-1-1 and the upper cover plate 3-1-2 are both in a cuboid shape, a rear lower inclined plane and a front lower inclined plane which form an inverted V-shaped included angle with each other are symmetrically arranged at the bottom of the upper block body 3-1-1, a rear upper inclined plane and a front upper inclined plane which form an inverted V-shaped included angle with each other are symmetrically arranged at the top of the upper block body 3-1-1, the rear lower inclined plane is parallel to the rear upper inclined plane, the front lower inclined plane is parallel to the front upper inclined plane, the angle of the inverted V-shaped included angle can be 90-120 degrees, rear upper through holes 8-1 which extend obliquely upwards are uniformly arranged on the rear lower inclined plane of the upper block body 3-1-1 from left to right, each rear upper through hole 8-1 is a step-shaped through hole with a small lower section diameter and a large upper section diameter, one to three rear upper through holes 8-1 can be opened on the rear lower inclined plane of the upper block body 3-1-1, the central lines of the rear upper through holes 8-1 are in the same plane and are parallel to each other, the central line of each rear upper through hole 8-1 is vertical to a rear lower inclined plane, the diameter of the lower section of each rear upper through hole 8-1 is larger than that of the steel ball 5, the steel ball 5 is arranged in the lower section of each rear upper through hole 8-1, the upper section of each rear upper through hole 8-1 is fixedly provided with a groove opening and a downward circular groove plate 7, the circular groove plate 7 comprises a plate body and a circular groove, the plate body is in a circular ring shape, the circular groove with an inverted U-shaped cross section is arranged on the circular surface of the plate body, the bottom of the inverted U-shaped groove can be a right-angle plane or a circular arc surface, the opening of the groove is downward when the circular groove plate 7 is installed, the upper end section of each rear upper through hole 8-1 is provided with an internal thread and a screw plug 11 is arranged, the screw plug 11 is used for pushing a circular groove plate 7, steel balls 6 are arranged on the inner circumference of a circular groove on the circular groove plate 7, partial surfaces of the steel balls 6 are exposed out of the circular groove plate 7 to form a steel ball ring, the upper surface of the steel ball 5 is partially abutted against the steel ball ring, the lower surface of the steel ball 5 is partially exposed out of a rear upper through hole 8-1, meanwhile, front upper through holes 8-2 which extend obliquely forwards and upwards are uniformly distributed on a front lower inclined plane of the upper block body 3-1-1 from left to right, each front upper through hole 8-2 is a step-shaped through hole with a small lower section diameter and a large upper section diameter, one to three front upper through holes 8-2 can be arranged on the front lower inclined plane of the upper block body 3-1-1, the central lines of the front upper through holes 8-2 are in the same plane and are parallel to each other, moreover, the central line of each front upper through hole 8-2 is vertical to the front lower inclined plane, the diameter of the lower section of each front upper through hole 8-2 is larger than the diameter of the steel ball 5, the steel ball 5 is arranged in the lower section of each front upper through hole 8-2, a circular groove plate 7 with a downward opening of the groove is respectively fixed in the upper section of each front upper through hole 8-2, the circular groove plate 7 comprises a plate body and a circular groove, the plate body is in a circular ring shape, the circular groove with an inverted U-shaped cross section is arranged on the circular surface of the plate body, the bottom of the inverted U-shaped groove can be a right angle plane or a circular arc surface, the opening of the groove is downward when the circular groove plate is installed, an internal thread is arranged in the upper end section of each front upper through hole 8-2, a screw plug 11 is arranged, the screw plug 11 is used for pushing the circular groove plate 7, the steel ball 6 is arranged in the circular groove on the circular groove plate 7, and the local surface of the steel ball 6 is exposed out of the circular ring groove plate 7 to form a steel ball ring, the upper surface of the steel ball 5 is partially abutted against the steel ball ring, the lower surface of the steel ball 5 is partially exposed out of the front upper through hole 8-2, the top of the upper block 3-1-1 is fixedly provided with an upper cover plate 3-1-2 by bolts, the bottom of the upper cover plate 3-1-2 is symmetrically provided with a rear bottom inclined plane and a front bottom inclined plane which form an inverted V-shaped included angle, the inverted V-shaped included angle of the bottom of the upper cover plate 3-1-2 is correspondingly consistent with the inverted V-shaped clamp angle of the top of the upper block 3-1-1, and the upper cover plate 3-1-2 and the upper block 3-1-1 are correspondingly buckled into a whole to form an upper straightening block 3-1. (see FIG. 3, FIG. 4)
Similarly, the lower straightening block 3-2 is divided into a lower block 3-2-1 and a lower cover plate 3-2-2, a rear bottom inclined plane and a front bottom inclined plane which form a V-shaped included angle with each other are symmetrically arranged at the bottom of the lower block 3-2-1, a rear top inclined plane and a front top inclined plane which form a V-shaped included angle with each other are symmetrically arranged at the top of the lower block 3-2-1, the rear bottom inclined plane and the rear top inclined plane are parallel, the front bottom inclined plane and the front top inclined plane are parallel, the angle of the V-shaped included angle can be 90-120 degrees, rear lower through holes 8-3 which extend obliquely backwards and downwards are uniformly distributed from left to right on the rear top inclined plane of the lower block 3-2-1, and each rear lower through hole 8-3 is a through hole with a large lower section diameter and a small upper section diameter, one to three rear lower through holes 8-3 can be opened on the rear top inclined plane of the lower block body 8-2-1, the central lines of the rear lower through holes 8-3 are in the same plane and are parallel to each other, moreover, the central line of each rear lower through hole 8-3 is perpendicular to the rear top inclined plane, the diameter of the upper section of each rear lower through hole 8-3 is larger than that of the steel ball 5, the steel ball 5 is arranged in the upper section of each rear lower through hole 8-3, a circular groove plate 7 with an upward opening of the groove is fixedly arranged in the lower section of each rear lower through hole 8-3, the circular groove plate 7 comprises a plate body and a circular groove, the plate body is circular, a circular groove with an inverted U-shaped cross section is opened on the circular surface of the plate body, the bottom of the inverted U-shaped groove can be a right-angle plane or a right-angle plane, when the circular groove plate 7 is installed, the opening of the groove is upward, an internal thread is arranged in the lower end section of each rear lower through hole 8-3, a screw plug 11 is arranged, the screw plug 11 is used for pushing the circular groove plate 7, steel balls 6 are arranged on the inner circumference of the circular groove on the circular groove plate 7, partial surfaces of the steel balls 6 are exposed out of the circular groove plate 7 to form a steel ball ring, the lower surface of the steel ball 5 is partially abutted against the steel ball ring, the upper surface of the steel ball 5 is partially exposed out of the rear lower through hole 8-3, meanwhile, front lower through holes 8-4 extending forwards and downwards are uniformly arranged on the front top inclined plane of the lower block 3-2-1 from left to right, each front lower through hole 8-4 is a stepped through hole with a large lower section diameter and a small upper section diameter, one to three front lower through holes 8-4 can be arranged on the front top inclined plane of the lower block 3-2-1, the central lines of the front lower through holes 8-4 are in the same plane and are parallel to each other, the central line of each front lower through hole 8-4 is perpendicular to the front oblique plane, the diameter of the upper section of each front lower through hole 8-4 is larger than that of the steel ball 5, the steel ball 5 is arranged in the upper section of each front lower through hole 8-4, the circular groove plate 7 with an upward opening of the groove is fixedly arranged in the lower section of each front lower through hole 8-4, the circular groove plate 7 comprises a plate body and a circular groove, the plate body is in a circular ring shape, the circular groove with an inverted U-shaped cross section is arranged on the circular surface of the plate body, the bottom of the inverted U-shaped groove can be a right-angle plane or a circular arc surface, the opening of the groove is upward when the circular groove plate 7 is installed, the internal thread is arranged in the lower end section of each front lower through hole 8-4, and the screw plug 11 is arranged, the screw plug 11 is used for pushing a circular groove plate 7, a steel ball 6 is arranged on the inner circumference of a circular groove on the circular groove plate 7, the partial surface of the steel ball 6 is exposed out of the circular groove plate 7 to form a steel ball ring, the partial lower surface of the steel ball 5 is abutted against the steel ball ring, the partial upper surface of the steel ball 5 is exposed out of a front lower through hole 8-4, a lower cover plate 3-2-2 is fixedly arranged at the bottom of the lower block 3-2-1 by a bolt, a rear inclined plane and a front inclined plane which form a V-shaped included angle with each other are symmetrically arranged at the top of the lower cover plate 3-2-2, the V-shaped included angle at the top of the lower cover plate 3-2-2 is corresponding to the V-shaped included angle at the bottom of the lower block 3-2-1, so that the lower cover plate 3-2-2 and the lower block 3-2-1 are correspondingly buckled into a whole, to form a lower straightening block 3-2. (see FIG. 3, FIG. 4)
A baffle plate 10 with a sealing ring 9 which is propped against the exposed partial surface of the steel ball 5 is fixedly arranged at the bottom of the upper block 3-1-1 (namely on the rear lower inclined plane and the front lower inclined plane), a baffle plate 10 with a sealing ring 9 which is abutted against the exposed partial surface of the steel ball 5 is fixedly arranged at the top of the lower block body 3-2-1 (namely on the rear top inclined plane and the front top inclined plane), so that external impurities can be prevented from entering the rear lower through hole 8-3, the front lower through hole 8-4, the rear upper through hole 8-1 and the front upper through hole 8-2, the steel ball 5 can be blocked, the steel ball 5 cannot slide out of the rear lower through hole 8-3, the front lower through hole 8-4, the rear upper through hole 8-1 and the front upper through hole 8-2, the steel ball 6 cannot slide out of the circular ring groove plate 7, and meanwhile, the steel ball 5 can freely rotate on the steel ball ring.
In summary, the rear upper through hole 8-1, the front upper through hole 8-2, the rear lower through hole 8-3 and the front lower through hole 8-4 have the same structure and are symmetrically arranged, the rear upper through hole 8-1, the rear lower through hole 8-3, the front upper through hole 8-2 and the front lower through hole 8-4 have the same structure and can be symmetrically arranged, and gaps among the steel balls 5 arranged in the rear upper through hole 8-1, the front upper through hole 8-2, the rear lower through hole 8-3 and the front lower through hole 8-4 become a steel bar channel 12 for penetrating and installing the steel bar 1 to be straightened.
In addition, aiming at the rotary straightening roll provided with the straightening block combining the steel ball and the steel ball ring, the rear upper through hole 8-1, the front upper through hole 8-2, the rear lower through hole 8-3 and the front lower through hole 8-4 can be respectively arranged into cylindrical blind holes, namely, the rear lower through hole 8-1, the front lower through hole 8-2, the rear upper through hole 8-3 and the front upper through hole 8-4 are correspondingly arranged into a rear upper blind hole, a front upper blind hole, a rear lower blind hole and a front lower blind hole. Meanwhile, an annular groove is directly formed in the bottom of each blind hole, a steel ball 6 is arranged in the annular groove to form a steel ball ring, then a steel ball 5 is arranged in each blind hole, so that the part of one side of the surface of the steel ball 5 abuts against the steel ball ring at the bottom of the blind hole, and the part of the other side of the steel ball 5 correspondingly exposes out of the upper rear blind hole, the upper front blind hole, the lower rear blind hole and the lower front blind hole. (explanation: this technical solution has already prepared another application for a utility model patent).
The invention provides a rotating straightening roller provided with a straightening block combining a steel ball and a steel ball ring, when the straightening operation is carried out, each steel ball 5 arranged in a rear upper through hole 8-1 and a front upper through hole 8-2 or each steel ball 5 arranged in a rear lower through hole 8-3 and a front lower through hole 8-4 is pressed on a steel bar 1 to be straightened, so that when the rotating straightening roller rotates, the upper straightening block 3-1 and the lower straightening block 3-2 are driven to rotate together, and in the rotating process of the straightening roller, no matter when the straightening block 3 rotates around the steel bar 1 in the radial direction or when the steel bar 1 moves in the synchronous axial direction, rolling friction is realized between the steel ball 5 and the steel bar 1, namely, all the steel balls generated between the upper straightening block and the steel bar 1 are rolling friction, and the friction loss and the power loss in the steel bar straightening process are obviously reduced, the surface damage of the straightened steel bar 1 is reduced to the minimum, the service life of the straightening block 3 and the straightening quality of the steel bar 1 are further improved, and the consumption of electric energy is obviously reduced.
According to practical measurements, when straightening cold-rolled ribbed bars with a diameter of 14 mm, if the original fixed straightening block is used: firstly, because of abrasion, the diameter difference between the steel bar before straightening and the steel bar after straightening often reaches 0.4-0.5 mm, even larger, secondly, a four-stage asynchronous motor with the power of 37 kilowatt is needed, the working current when straightening is carried out is 65-70 amperes, and after the rotating straightening straight roller provided with the steel ball and steel ball ring combined straightening block provided by the invention is adopted: firstly, the abrasion to the steel bar 1 is greatly reduced, the diameter difference between the steel bar before straightening and the steel bar after straightening is less than 0.08 mm, secondly, the power of the four-stage asynchronous motor can be reduced to 22 kilowatts, and the working current for straightening is also reduced to 35-40 amperes.
Therefore, the rotating straightening roller provided with the straightening block with the steel ball and steel ball ring combination is effective in reducing the abrasion of the steel bar 1 and saving the electric energy consumption when the steel bar 1 is straightened.
In addition, as the abrasion of the steel bar 1 and the straightening block 3 is reduced, the scrap iron and dust generated by abrasion are greatly reduced, and the working environment of workers is effectively improved.
Claims (8)
1. A rotating straightening roll provided with a straightening block combining a steel ball and a steel ball ring comprises a straightening roll (2), a straightening block (3), a pressing device (4) and a steel bar (1), wherein the straightening roll (2) comprises a left roll shaft, a right roll shaft and a straightening roll body, the left roll shaft, the right roll shaft and the straightening roll body are manufactured into a whole and provided with an axial central through hole, the steel bar (1) penetrates through the central through hole, radial through holes with rectangular cross sections are formed in the straightening roll body at intervals from left to right in a radial mode, a cuboid straightening block (3) is installed in each radial through hole in a sliding fit mode, the pressing device (4) is arranged at the upper end portion and the lower end portion of the straightening block (3) respectively, the straightening block (3) comprises an upper straightening block (3-1) and a lower straightening block (3-2), the upper straightening block (3-1) and the lower straightening block (3-2) are symmetrically arranged and have the same structure, an axial steel bar through hole is arranged at the central part between the upper straightening block and the lower straightening block, a steel bar (1) to be straightened penetrates through the axial steel bar through hole, and the upper straightening block (3-1) or the lower straightening block (3-2) is pressed on the steel bar (1) by the pressing device (4), which is characterized in that: a rotating straightening roll provided with a straightening block formed by combining a steel ball and a steel ball ring comprises an upper block body (3-1-1), an upper cover plate (3-1-2), a rear upper through hole (8-1), a front upper through hole (8-2), a lower block body (3-2-1), a lower cover plate (3-2-2), a rear lower through hole (8-3), a front lower through hole (8-4), a circular groove plate (7), a screw plug (11), a steel ball (5), a steel ball (6), a sealing ring (9), a baffle plate (10) and a steel bar channel (12), wherein the upper straightening block (3-1) is divided into the upper block body (3-1-1) and the upper cover plate (3-1-2), the upper block body (3-1-1) and the upper cover plate (3-1-2) are both in a cuboid shape, a rear lower inclined plane and a front lower inclined plane which form an inverted V-shaped included angle with each other are symmetrically arranged at the bottom of the upper block body (3-1-1), a rear upper inclined plane and a front upper inclined plane which form an inverted V-shaped included angle with each other are symmetrically arranged at the top of the upper block body (3-1-1), the rear lower inclined plane is parallel to the rear upper inclined plane, the front lower inclined plane is parallel to the front upper inclined plane, rear upper through holes (8-1) which extend obliquely upwards are uniformly distributed from left to right on the rear lower inclined plane of the upper block body (3-1-1), each rear upper through hole (8-1) is a step-shaped through hole with a small lower section diameter and a large upper section diameter, the central lines of the rear upper through holes (8-1) are in the same plane and are parallel to each other, and the central line of each rear upper through hole (8-1) is vertical to the rear lower inclined plane, the diameter of the lower section of each rear upper through hole (8-1) is larger than that of the steel ball (5), the steel ball (5) is arranged in the lower section of each rear upper through hole (8-1), a circular groove plate (7) with a downward opening of the groove is fixedly arranged in the upper section of each rear upper through hole (8-1), the circular groove plate (7) further comprises a plate body and a circular groove, the plate body is circular, the circular groove with an inverted U-shaped cross section is arranged on the circular ring surface of the plate body, an internal thread and a screw plug (11) are arranged in the upper end section of each rear upper through hole (8-1), the circular groove plate (7) is provided with the steel ball (6), the local surface of the steel ball (6) is exposed out of the circular groove plate (7) to form a steel ball ring, and the upper surface of the steel ball (5) is partially abutted against the steel ball ring, the lower surface of the steel ball (5) is partially exposed out of a rear upper through hole (8-1), meanwhile, front upper through holes (8-2) extending obliquely forwards and upwards are uniformly distributed on a front lower inclined plane of the upper block body (3-1-1) from left to right, each front upper through hole (8-2) is a step-shaped through hole with a small lower section diameter and a large upper section diameter, the center lines of the front upper through holes (8-2) are in the same plane and are parallel to each other, the center line of each front upper through hole (8-2) is perpendicular to the front lower inclined plane, the diameter of the lower section of each front upper through hole (8-2) is larger than that of the steel ball (5), the steel ball (5) is arranged in the lower section of each front upper through hole (8-2), and a circular groove plate (7) with a downward opening of a groove is fixedly arranged in the upper section of each front upper through hole (8-2), an internal thread is arranged in the upper end section of each front upper through hole (8-2), a screw plug (11) is arranged, steel balls (6) are arranged on the inner circumference of a circular groove on the circular groove plate (7), the partial surface of each steel ball (6) is exposed out of the circular groove plate (7) to form a steel ball ring, the upper surface of each steel ball (5) is partially abutted against the steel ball ring, the lower surface of each steel ball (5) is partially exposed out of the front upper through hole (8-2), an upper cover plate (3-1-2) is fixedly arranged at the top of the upper block body (3-1-1) by bolts, a rear bottom inclined plane and a front bottom inclined plane which form an inverted V-shaped included angle with each other are symmetrically arranged at the bottom of the upper cover plate (3-1-2), the inverted V-shaped included angle at the bottom of the upper cover plate (3-1-2) corresponds to the inverted V-shaped clamp at the top of the upper block body (3-1-1), the upper gland (3-1-2) and the upper block body (3-1-1) are correspondingly buckled into a whole to form an upper straightening block (3-1);
similarly, the lower straightening block (3-2) is divided into a lower block body (3-2-1) and a lower cover plate (3-2-2), the bottom of the lower block body (3-2-1) is symmetrically provided with a rear bottom inclined plane and a front bottom inclined plane which form a V-shaped included angle with each other, the top of the lower block body (3-2-1) is symmetrically provided with a rear top inclined plane and a front top inclined plane which form a V-shaped included angle with each other, the rear bottom inclined plane is parallel to the rear top inclined plane, the front bottom inclined plane is parallel to the front top inclined plane, rear lower through holes (8-3) which extend obliquely backwards and downwards are uniformly distributed from left to right on the rear top inclined plane of the lower block body (3-2-1), and each rear lower through hole (8-3) is a stepped through hole with a large diameter lower section and a small diameter upper section, the center lines of the rear lower through holes (8-3) are in the same plane and are parallel to each other, the center line of each rear lower through hole (8-3) is perpendicular to a rear ejection inclined plane, the diameter of the upper section of each rear lower through hole (8-3) is larger than that of the steel ball (5), the steel ball (5) is arranged in the upper section of each rear lower through hole (8-3), a circular ring groove plate (7) with an upward opening of a groove is fixedly arranged in the lower section of each rear lower through hole (8-3), an internal thread is arranged in the lower end section of each rear lower through hole (8-3), a screw plug (11) is arranged, steel balls (6) are arranged on the inner circumference of the circular ring groove on the circular ring groove plate (7), and the circular ring groove plate (7) is exposed outside the local surface of each steel ball (6) to form a steel ball ring, the lower surface of the steel ball (5) is partially abutted against the steel ball ring, the upper surface of the steel ball (5) is partially exposed out of the rear lower through hole (8-3), in addition, front lower through holes (8-4) extending obliquely to the front lower direction are uniformly formed on a front top inclined plane of the lower block body (3-2-1) from left to right, each front lower through hole (8-4) is a stepped through hole with a large lower section diameter and a small upper section diameter, the central lines of the front lower through holes are in the same plane and are parallel to each other, the central line of each front lower through hole is perpendicular to the front top inclined plane, the diameter of the upper section of each front lower through hole (8-4) is larger than the diameter of the steel ball (5), the steel ball (5) is arranged in the upper section of each front lower through hole (8-4), and an upward opening ring of a fixing groove is respectively arranged in the lower section of each front lower through hole (8-4) The steel ball bearing structure comprises groove plates (7), wherein internal threads are formed in the lower end sections of the front lower through holes (8-4), screw plugs (11) are arranged, steel balls (6) are arranged on the inner circumference of a circular groove on the circular groove plate (7), the partial surfaces of the steel balls (6) are exposed out of the circular groove plate (7) to form a steel ball ring, the lower surface of the steel ball (5) is partially abutted against the steel ball ring, the upper surface of the steel ball (5) is partially exposed out of the front lower through hole (8-4), a lower cover plate (3-2-2) is fixedly arranged at the bottom of the lower block body (3-2-1) through bolts, a rear inclined plane and a front inclined plane which form a V-shaped included angle with each other are symmetrically arranged at the top of the lower cover plate (3-2-2), and the V-shaped included angle at the top of the lower cover plate (3-2-2) corresponds to the V-shaped included angle at the bottom of the lower block body (3-2-1) The lower cover plate (3-2-2) and the lower block body (3-2-1) are correspondingly buckled into a whole to form a lower straightening block (3-2), and gaps among the steel balls (5) arranged in the rear upper through hole (8-1), the front upper through hole (8-2), the rear lower through hole (8-3) and the front lower through hole (8-4) become a steel bar channel (12) for penetrating and installing a steel bar (1) to be straightened;
the bottom of the upper block body (3-1-1), namely the rear lower inclined plane and the front lower inclined plane are fixedly provided with baffle plates (10) with sealing rings (9) which are abutted against the exposed local surface of the steel ball (5), and the top of the lower block body (3-2-1), namely the rear top inclined plane and the front top inclined plane are fixedly provided with baffle plates (10) with sealing rings (9) which are abutted against the exposed local surface of the steel ball (5).
2. The rotating straightening roll provided with the straightening block combining the steel ball and the steel ball ring as claimed in claim 1, wherein the included angle of the inverted V-shaped angle is 90-120 degrees.
3. The rotating straightening roll provided with the straightening block combining the steel ball and the steel ball ring as claimed in claim 1, characterized in that one to three rear upper through holes (8-1) are formed on the rear downward inclined plane of the upper block body (3-1-1).
4. The rotating straightening roll provided with the straightening block combining the steel ball and the steel ball ring as claimed in claim 1, characterized in that one to three front upper through holes (8-2) are formed on the front lower inclined plane of the upper block body (3-1-1).
5. The rotating straightening roll provided with the straightening block formed by the combination of the steel ball and the steel ball ring as claimed in claim 1, wherein the included angle of the V-shaped angle is 90-120 degrees.
6. The rotating straightening roll provided with the straightening block combining the steel ball and the steel ball ring as claimed in claim 1, characterized in that one to three rear lower through holes (8-3) are formed on the rear top inclined plane of the lower block body (8-2-1).
7. The rotating straightening roll provided with the straightening block combining the steel ball and the steel ball ring as claimed in claim 1, characterized in that one to three front lower through holes (8-4) are formed on the front top inclined plane of the lower block body (3-2-1).
8. The rotating straightening roll provided with the straightening block combining the steel ball and the steel ball ring as claimed in claim 1, wherein the bottom of the inverted U-shaped groove is a right-angled plane or a circular arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111305231.XA CN114011997A (en) | 2021-11-05 | 2021-11-05 | Rotary straightening roller provided with steel ball and steel ball ring combined straightening block |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111305231.XA CN114011997A (en) | 2021-11-05 | 2021-11-05 | Rotary straightening roller provided with steel ball and steel ball ring combined straightening block |
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| CN114011997A true CN114011997A (en) | 2022-02-08 |
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| CN202111305231.XA Pending CN114011997A (en) | 2021-11-05 | 2021-11-05 | Rotary straightening roller provided with steel ball and steel ball ring combined straightening block |
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