British standard non-sizing and non-sizing separation method

Abstract

The invention discloses a British standard non-sizing and non-sizing separation method. The method comprises the following steps that (1) a phi 28 finished bar with the length being 742 m is obtained through a flying shear; (2) setting according to multiple lengths, obtaining a first section of bar, a second section of bar, a third section of bar, a fourth section of bar, a fifth section of bar, a sixth section of bar, a seventh section of bar and an eighth section of bar through multiple-length shearing, and arranging according to requirements; (3) the 8m-long standard-exceeding non-fixed-length part of the tail of the eighth section of bar is sheared off through a cold shearing machine and collected to a collecting area I; (4) positioning through the lifting action of the fixed-length baffle plate, shearing into a plurality of qualified non-fixed-lengths with the fixed length of 12m through a cold shearing machine, and collecting to a collecting area II; and (5) repeating the actions until the last shearing is needed, firstly pressing an over-standard non-fixed-length part of which the head is 8m long through a pressing plate device, and then carrying out the last shearing, so that non-fixed-length separation is realized. The method is time-saving, labor-saving and high in benefit.

Description

Technical Field

[0001] This invention relates to the field of non-standard length production technology, specifically to a method for separating British standard non-standard length production. Background Technology

[0002] British Standard B500B grade non-standard length products primarily utilize a high-penetration water-resistant process. During production, the high speed can easily cause the head and tail sections to exceed the mechanical properties within the British Standard range due to excessively low temperatures. Therefore, to ensure the production of qualified British Standard B500B products, the head section is typically extended by 6-12 meters to create a separate multiple-length section, and the tail section is also extended separately using a tail-cutting device. However, since non-standard length products packaged for sale must all meet British Standard mechanical standards, non-standard lengths exceeding the mechanical standards cannot be sold if mixed with qualified ones. Furthermore, the selling price of qualified non-standard lengths varies depending on their length; mixing different lengths would result in a lower selling price. Therefore, how to quickly separate British Standard non-standard lengths has become a pressing problem that needs to be solved. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a method for separating non-standard lengths in British Standard. By using a standard length baffle, a pressure plate device, a steel turning machine I and a steel turning machine II in combination, it is easy to separate and distinguish between qualified non-standard lengths and non-standard lengths that exceed the standard. At the same time, it is easy to separate and distinguish qualified non-standard lengths of different lengths. This process saves time and effort, improves work efficiency, and has high benefits.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The innovative aspect of the present invention's method for separating non-standard length British standard items lies in including the following steps: (1) First, according to the multiple length setting, a φ28 finished bar with a length of 742m is obtained by flying shear, and the head and tail 8m lengths are judged as oversized and non-standard length, and the rest is judged as qualified non-standard length. (2) According to the multiple length setting, the φ28 finished bar with a length of 742m above-mentioned length is cut from the head to obtain the first bar, the second bar, the third bar, the fourth bar, the fifth bar, the sixth bar, the seventh bar and the eighth bar in sequence, and sorted into a batch as required. (3) The batch of φ28 finished bars is transported horizontally to the left by the conveyor roller, and after being manually controlled, the 8m long of the tail of the eighth bar is cut off by the cold shear machine and collected in the collection area I. (4) Then each section of bar continues to move forward with the conveyor rollers, and after being positioned by the lifting action of the fixed length baffle, it is cut into several qualified non-fixed lengths with a fixed length of 12m by the cold shear machine and collected in the collection area II. (5) Repeat the above actions until the last cut is required. First, press down the 8m long non-standard length part of the first section of bar with the pressure plate device, and then make the last cut with the cold shear machine. At this time, the qualified non-standard length and the non-standard length can be collected into the collection area II and the collection area I respectively, thereby realizing the separation of non-standard length.

[0005] Preferably, in step (1) above, the total length of the φ28 finished bar produced by the finished rolling mill is 750.95m, and the flying shear is set between the finished rolling mill and the multiple length shear, and is set on the side closer to the finished rolling mill. Then, according to the multiple length setting, the flying shear cuts off the excess part of 8.95m in length, so that the φ28 finished bar with a length of 742m can be obtained.

[0006] Preferably, in step (1) above, the logic for setting the multiple length is to set the 8m long oversized non-standard length at the head within the first bar segment, and set the 8m long oversized non-standard length at the tail within the eighth bar segment, and set the length of all other bar segments to a multiple of 12, specifically: (1.1) The length of the first section of bar obtained after doubling the length is set to 104m, and it consists of 96m of qualified non-standard length and 8m of over-standard non-standard length at the head. (1.2) Set the length of the second section of bar obtained after doubling the length to 96m, and it is a qualified non-standard length; (1.3) Set the length of the third section of bar obtained after doubling the length to 96m, and it is a qualified non-standard length; (1.4) The length of the fourth section of bar obtained after doubling the length is set to 84m, and it is a qualified non-standard length; (1.5) Set the length of the fifth bar obtained after doubling the length to 84m, and it is a qualified non-standard length; (1.6) The length of the sixth bar obtained after doubling the length is set to 84m, and it is a qualified non-standard length; (1.7) Set the length of the seventh bar obtained after doubling the length to 84m, and it is a qualified non-standard length; (1.8) The length of the eighth bar obtained after doubling is set to 110m, and it consists of 102m of qualified non-standard length and 8m of over-standard non-standard length at the tail.

[0007] Preferably, in step (2) above, the specific process for organizing the first, second, third, fourth, fifth, sixth, seventh, and eighth bar segments into a batch as required is as follows: (2.1) First, the first, second, third, fourth, fifth, sixth, seventh and eighth bars are placed horizontally side by side from back to front using a robotic arm. It is necessary to ensure that the non-standard length portion of the first bar is on the right side and that the non-standard length portion of the eighth bar is on the left side. (2.2) Then, align the left ends of the first, second, third, fourth, fifth, sixth, seventh and eighth bar sections using the first baffle. (2.3) Then, through the cooperation of manual labor and robotic arm, the eighth bar is moved to the left, and the distance between its left end face and the left end face of the other bars is 8m, thus forming a batch of φ28 finished bars.

[0008] Preferably, in step (3) above, after controlling the distance manually, the 8m long non-standard length of the tail of the eighth bar is cut off by a cold shearing machine. At this time, the left end face of the remaining part of the eighth bar is flush with the left end face of the other bars.

[0009] Preferably, in step (3) above, collection area I and collection area II are set at intervals on one side of the conveyor roller table relative to the left side of the cold shear machine, and a steel turning machine I is provided between the conveyor roller table and collection area I. It is necessary to ensure that the steel turning machine I and the conveyor roller table do not interfere with each other. Then, when the conveyor roller table moves the 8m long oversized non-standard length sheared off horizontally to the left to the position relative to collection area I, the steel turning machine I turns the 8m long oversized non-standard length sheared off into collection area I for collection.

[0010] Preferably, in step (4) above, the fixed-length baffle with lifting function is set on the conveyor rollers relative to the left side of the cold shear machine, and the distance between the fixed-length baffle and the cold shear machine is 12m, and the collection area II is set on one side of the conveyor rollers relative to the area between the fixed-length baffle and the cold shear machine; the lower limit position of the fixed-length baffle must ensure that it does not interfere with the transmission action of the conveyor rollers, and its upper limit position must ensure that it can limit the left side of each section of bar on the conveyor rollers, and ensure that the left end face of each section of bar is flush.

[0011] Preferably, in step (4) above, a steel turning machine II is provided between the conveyor roller conveyor and the collection area II, and it must be ensured that the steel turning machine II and the conveyor roller conveyor are not interfered with each other; the process of cutting the steel into qualified non-standard lengths of 12m by a cold shear machine and collecting them into the collection area II is as follows: (4.1) When the 8m long non-standard length of the tail section is collected into the collection area I, the standard length baffle rises and the left limit is applied to each section of bar. (4.2) Since the distance between the fixed length baffle and the cold shear machine is 12m, when the cold shear machine performs the shearing operation, it can cut a qualified non-fixed length of 12m from the first, second, third, fourth, fifth, sixth, seventh and eighth sections of the bar. (4.3) Then, the steel turning machine II turns several qualified non-standard lengths of 12m into the collection area II for collection.

[0012] Preferably, in step (5) above, the pressure plate device with lifting function is set directly above the conveyor rollers relative to the right side of the cold shear machine, and the distance between the pressure plate device and the cold shear machine is 6m; the upper limit position of the pressure plate device must ensure that it does not interfere with the transmission action of the conveyor rollers, and its lower limit position must ensure that it can press the 8m long non-standard length part of the head of the first bar.

[0013] Preferably, in step (5) above, after the penultimate cut, the fourth, fifth, sixth, and seventh bar sections have all been cut. At this point, the first bar section still has 12m of qualified non-standard length and 8m of oversized non-standard length at the head. The second and third bar sections each have only 12m of qualified non-standard length remaining, and the eighth bar section has 18m of qualified non-standard length remaining. The specific process for the final cut by the cold shearing machine is as follows: (5.1) Before the final shearing, the conveyor rollers continue to advance and the first, second, third and eighth sections of bar stock are left-limited by the length baffle. (5.2) Then the pressure plate device descends vertically to press down the 8m long non-standard length part of the first section of bar; (5.3) Then the cold shear machine performs the final cut, at which point the first section of bar is cut into two parts: a 12m long qualified non-standard length and an 8m long oversized non-standard length at the head. The eighth section of bar is also cut into two parts: a 12m long qualified non-standard length and a 6m long qualified non-standard length. (5.4) Then, several qualified non-standard lengths with a fixed length of 12m are turned over by the steel turning machine II and collected in the collection area II; (5.5) Then the conveyor roller continues to move forward. At this time, since the 8m long non-standard length at the head is pressed down, while the 6m long qualified non-standard length is not pressed down, the 6m long qualified non-standard length can be moved horizontally to the left to the position relative to the collection area II. Then, it can be flipped into the collection area II by the steel flipping machine II for collection, and ensure that the 6m long qualified non-standard length is distinguished from the 12m long qualified non-standard length previously collected in the collection area II. (5.6) Then the fixed length baffle descends and the pressure plate device rises. At this time, by continuing to advance the conveyor roller, the 8m long non-standard length of the head can be moved horizontally to the left to the position relative to the collection area I. Then the 8m long non-standard length of the head is turned into the collection area I by the steel turning machine I for collection.

[0014] The beneficial effects of the present invention are as follows: The present invention facilitates the separation and differentiation of qualified non-standard length and non-standard length by using the fixed length baffle, pressure plate device, steel turning machine I and steel turning machine II in combination. It also facilitates the separation and differentiation of qualified non-standard length of different lengths. This process saves time and effort, improves work efficiency and has high benefits. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram illustrating the separation and collection of qualified non-standard length and non-standard length according to the present invention.

[0017] Figure 2 The logic table defined for the multiples of this invention.

[0018] Among them, 1-Conveying roller conveyor; 2-Cold shearing machine; 3-Short length baffle; 4-Collection area I; 5-Collection area II; 6-Turning machine I; 7-Turning machine II; 8-Pressure plate device. Detailed Implementation

[0019] The technical solution of the present invention will be clearly and completely described below through specific embodiments.

[0020] The present invention provides a method for separating non-standard length British standard items, such as... Figure 1 , Figure 2 As shown, it includes the following steps: (1) First, according to the multiple length setting, a φ28 finished bar with a length of 742m is obtained by flying shear. The head and tail 8m lengths are judged as oversized and non-standard length, and the rest is judged as qualified non-standard length. Among them, although the performance over-standard is generally 3~6m, there is a certain fluctuation. Therefore, setting the standard length of 8m is safer. In addition, if the non-standard length is shortened due to various reasons (such as the middle section is cut off), its length will be randomly shorter than this standard length.

[0021] In the above steps, the total length of the φ28 finished bar produced by the finished mill is 750.95m. The flying shear is set between the finished mill and the multiple length shear, and is set on the side closer to the finished mill. Then, according to the multiple length setting, the flying shear cuts off the excess part of 8.95m in length. This part is the part with severe head segregation deformation, and a φ28 finished bar with a length of 742m can be obtained.

[0022] In the above steps, the logic for setting the multiple length is to set the 8m length of the oversized, non-standard length at the head of the bar within the first bar segment, and set the 8m length of the oversized, non-standard length at the tail within the eighth bar segment, and set the length of all other bar segments to a multiple of 12, specifically: (1.1) The length of the first section of bar obtained after doubling the length is set to 104m, and it consists of 96m of qualified non-standard length and 8m of over-standard non-standard length at the head. (1.2) Set the length of the second section of bar obtained after doubling the length to 96m, and it is a qualified non-standard length; (1.3) Set the length of the third section of bar obtained after doubling the length to 96m, and it is a qualified non-standard length; (1.4) The length of the fourth section of bar obtained after doubling the length is set to 84m, and it is a qualified non-standard length; (1.5) Set the length of the fifth bar obtained after doubling the length to 84m, and it is a qualified non-standard length; (1.6) The length of the sixth bar obtained after doubling the length is set to 84m, and it is a qualified non-standard length; (1.7) Set the length of the seventh bar obtained after doubling the length to 84m, and it is a qualified non-standard length; (1.8) The length of the eighth bar obtained after doubling is set to 110m, and it consists of 102m of qualified non-standard length and 8m of over-standard non-standard length at the tail.

[0023] (2) According to the multiple length setting, the φ28 finished bar with a length of 742m is cut from the head to obtain the first bar, the second bar, the third bar, the fourth bar, the fifth bar, the sixth bar, the seventh bar and the eighth bar in sequence, and sorted into a batch as required.

[0024] The specific process for organizing the first, second, third, fourth, fifth, sixth, seventh, and eighth bar sections into a single batch as required in the above steps is as follows: (2.1) First, the first, second, third, fourth, fifth, sixth, seventh and eighth bars are placed horizontally side by side from back to front using a robotic arm. It is necessary to ensure that the non-standard length portion of the first bar is on the right side and that the non-standard length portion of the eighth bar is on the left side. (2.2) Then, align the left ends of the first, second, third, fourth, fifth, sixth, seventh and eighth bar sections using the first baffle. (2.3) Then, through the cooperation of manual labor and robotic arm, the eighth bar is moved to the left, and the distance between its left end face and the left end face of the other bars is 8m, thus forming a batch of φ28 finished bars.

[0025] (3) The batch of φ28 finished bars is horizontally transported to the left by conveyor roller 1, and after being manually controlled, the tail of the eighth bar section of 8m long that exceeds the standard length is cut off by cold shear machine 2 and collected in collection area I4.

[0026] In the above steps, after manually controlling the distance, the 8m long non-standard length of the tail of the eighth bar is cut off by the cold shear machine 2. At this time, the left end face of the remaining part of the eighth bar is flush with the left end face of the other bars.

[0027] In the above steps, collection area I4 and collection area II5 are set at intervals on one side of the conveyor roller 1 relative to the left side of the cold shear machine 2. A steel turning machine I6 is set between the conveyor roller 1 and collection area I4. It is necessary to ensure that the steel turning machine I6 and the conveyor roller 1 are set up without interfering with each other. Then, when the conveyor roller 1 moves the 8m long oversized non-standard length sheared horizontally to the left to the position relative to collection area I4, the steel turning machine I6 turns the 8m long oversized non-standard length sheared into collection area I4 for collection.

[0028] (4) Then each section of bar continues to move forward with the conveyor roller 1, and after being positioned by the lifting action of the fixed length baffle 3, it is cut into several qualified non-fixed lengths with a fixed length of 12m by the cold shear machine 2 and collected in the collection area II 5.

[0029] In the above steps, the length-fixed baffle 3 with lifting function is set on the left side of the conveyor roller 1 relative to the cold shear machine 2, and the distance between the length-fixed baffle 3 and the cold shear machine 2 is 12m. The collection area II 5 is set on one side of the conveyor roller 1 relative to the area between the length-fixed baffle 3 and the cold shear machine 2. The lower limit position of the length-fixed baffle 3 must ensure that it does not interfere with the transmission action of the conveyor roller 1, and its upper limit position must ensure that it can limit the left movement of each section of bar on the conveyor roller 1, and ensure that the left end face of each section of bar is flush. The length-fixed baffle 3 of this invention has a conventional structure, and only its lifting function is required; therefore, its structure will not be described in detail here.

[0030] In the above steps, a steel turning machine II7 is installed between the conveyor roller 1 and the collection area II5, and it must be ensured that the steel turning machine II7 and the conveyor roller 1 are set up without interference. The specific process of cutting the steel into qualified non-standard lengths of 12m by the cold shear machine 2 and collecting them into the collection area II5 is as follows: (4.1) When the 8m long non-standard length of the tail section is collected into the collection area I4, the standard length baffle 3 rises and limits the left side of each section of bar. (4.2) Since the distance between the fixed length baffle 3 and the cold shear machine 2 is 12m, the cold shear machine 2 can cut a qualified non-fixed length of 12m from the first, second, third, fourth, fifth, sixth, seventh and eighth sections of bar. (4.3) Then, the steel turning machine II7 turns several qualified non-standard lengths of 12m into the collection area II5 for collection.

[0031] (5) Repeat the above actions until the last cut is required. First, press down the 8m long non-standard length part of the first section of bar with the pressure plate device 8, and then make the last cut with the cold shear machine 2. At this time, the qualified non-standard length and the non-standard length can be collected into the collection area II 5 and the collection area I 4 respectively, thereby realizing the separation of non-standard length.

[0032] In the above steps, the pressure plate device 8 with lifting function is positioned directly above the conveyor roller 1 on the right side relative to the cold shear machine 2, and the distance between the pressure plate device 8 and the cold shear machine 2 is 6m. The upper limit position of the pressure plate device 8 must ensure that it does not interfere with the transmission action of the conveyor roller 1, and its lower limit position must ensure that it can press the 8m long non-standard length portion of the head of the first section of bar stock. The pressure plate device 8 of this invention is a conventional pressure plate, which only needs to have a lifting function, so its structure will not be described in detail here.

[0033] In the above steps, after the penultimate cut, the fourth, fifth, sixth, and seventh bar sections have all been cut. At this point, the first bar section has 12m of qualified non-standard length remaining and 8m of oversized non-standard length remaining at the head. The second and third bar sections each have only 12m of qualified non-standard length remaining, and the eighth bar section has 18m of qualified non-standard length remaining. The specific process for the final cut by the cold shear machine 2 is as follows: (5.1) Before the last shearing, the conveyor roller 1 continues to advance and the first section of bar, the second section of bar, the third section of bar and the eighth section of bar are left-limited by the length baffle 3; (5.2) Then the pressure plate device 8 descends vertically to press down the 8m long non-standard length part of the head of the first bar section; (5.3) Then the cold shear machine 2 performs the final cut, at which point the first section of bar is cut into two parts: a 12m long qualified non-standard length and an 8m long oversized non-standard length at the head. The eighth section of bar is also cut into two parts: a 12m long qualified non-standard length and a 6m long qualified non-standard length. (5.4) Then, several qualified non-standard lengths with a fixed length of 12m are turned into the collection area II5 by the steel turning machine II7 for collection; (5.5) Then the conveyor roller 1 continues to move forward. At this time, since the 8m long non-standard length at the head is pressed down, while the 6m long qualified non-standard length is not pressed down, the 6m long qualified non-standard length can be moved horizontally to the left to the position relative to the collection area II5. Then, it is flipped into the collection area II5 by the steel flipping machine II7 for collection, and the 6m long qualified non-standard length is separated from the 12m long qualified non-standard length previously collected in the collection area II5. (5.6) Then the fixed length baffle 3 descends and the pressure plate device 8 rises. At this time, by continuing to advance the conveyor roller 1, the 8m long non-standard length of the head can be moved horizontally to the left to the position relative to the collection area I4. Then the 8m long non-standard length of the head is turned into the collection area I4 by the steel turning machine I6 for collection.

[0034] The steel turning machine I6, steel turning machine II7, and cold shear machine 2 of this invention are all conventional existing products, so their structures will not be described in detail here.

[0035] It is worth noting that if you want to cut a finished bar with a fixed length of 9m, the principle is similar to that of a finished bar with a fixed length of 12m. You only need to change the multiple setting to a multiple of 9.

[0036] The beneficial effects of the present invention are as follows: The present invention facilitates the separation and differentiation of qualified non-standard length and non-standard length by using the fixed length baffle 3, the pressure plate device 8, the steel turning machine I 6 and the steel turning machine II 7 in combination. It also facilitates the separation and differentiation of qualified non-standard length of different lengths. This process saves time and effort, improves work efficiency and has high benefits.

[0037] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, all modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the technical requirements.

Claims

1. A method for separating non-standard length British standard items, characterized in that... Includes the following steps: (1) First, according to the multiple length setting, a φ28 finished bar with a length of 742m is obtained by flying shear, and the head and tail 8m lengths are judged as oversized and non-standard length, and the rest is judged as qualified non-standard length. (2) According to the multiple length setting, the φ28 finished bar with a length of 742m above-mentioned length is cut from the head to obtain the first bar, the second bar, the third bar, the fourth bar, the fifth bar, the sixth bar, the seventh bar and the eighth bar in sequence, and sorted into a batch as required. (3) The batch of φ28 finished bars is transported horizontally to the left by the conveyor roller, and after being manually controlled, the 8m long of the tail of the eighth bar is cut off by the cold shear machine and collected in the collection area I. (4) Then each section of bar continues to move forward with the conveyor rollers, and after being positioned by the lifting action of the fixed length baffle, it is cut into several qualified non-fixed lengths with a fixed length of 12m by the cold shear machine and collected in the collection area II. (5) Repeat the above actions until the last cut is required. First, press down the 8m long non-standard length part of the first section of bar with the pressure plate device, and then make the last cut with the cold shear machine. At this time, the qualified non-standard length and the non-standard length can be collected into the collection area II and the collection area I respectively, thereby realizing the separation of non-standard length.

2. The method for separating non-standard length British Standard (BST) instruments according to claim 1, characterized in that: In step (1) above, the total length of the φ28 finished bar produced by the finished mill is 750.95m. The flying shear is set between the finished mill and the long shear, and is set on the side closer to the finished mill. Then, according to the long setting, the flying shear cuts off the excess part of 8.95m in length, and a φ28 finished bar with a length of 742m can be obtained.

3. The method for separating non-standard length British Standard (BST) instruments according to claim 2, characterized in that: In step (1) above, the logic for setting multiple lengths is to set the 8m long oversized non-standard length at the head within the first bar segment, and set the 8m long oversized non-standard length at the tail within the eighth bar segment, and set the lengths of all other bar segments to multiples of 12, specifically: (1.1) The length of the first section of bar obtained after doubling the length is set to 104m, and it consists of 96m of qualified non-standard length and 8m of over-standard non-standard length at the head. (1.2) Set the length of the second section of bar obtained after doubling the length to 96m, and it is a qualified non-standard length; (1.3) Set the length of the third section of bar obtained after doubling the length to 96m, and it is a qualified non-standard length; (1.4) The length of the fourth section of bar obtained after doubling the length is set to 84m, and it is a qualified non-standard length; (1.5) Set the length of the fifth bar obtained after doubling the length to 84m, and it is a qualified non-standard length; (1.6) The length of the sixth bar obtained after doubling the length is set to 84m, and it is a qualified non-standard length; (1.7) Set the length of the seventh bar obtained after doubling the length to 84m, and it is a qualified non-standard length; (1.8) The length of the eighth bar obtained after doubling is set to 110m, and it consists of 102m of qualified non-standard length and 8m of over-standard non-standard length at the tail.

4. The method for separating non-standard length British Standard (BST) instruments according to claim 3, characterized in that: In step (2) above, the specific process for organizing the first, second, third, fourth, fifth, sixth, seventh, and eighth bar sections into a batch as required is as follows: (2.1) First, the first, second, third, fourth, fifth, sixth, seventh and eighth bars are placed horizontally side by side from back to front using a robotic arm. It is necessary to ensure that the non-standard length portion of the first bar is on the right side and that the non-standard length portion of the eighth bar is on the left side. (2.2) Then, align the left ends of the first, second, third, fourth, fifth, sixth, seventh and eighth bar sections using the first baffle. (2.3) Then, through the cooperation of manual labor and robotic arm, the eighth bar is moved to the left, and the distance between its left end face and the left end face of the other bars is 8m, thus forming a batch of φ28 finished bars.

5. The method for separating non-standard length British Standard (BST) instruments according to claim 1, characterized in that: In step (3) above, after controlling the distance manually, the 8m long non-standard length of the tail of the eighth bar is cut off by a cold shearing machine. At this time, the left end face of the remaining part of the eighth bar is flush with the left end face of the other bars.

6. The method for separating non-standard length British Standard (BST) instruments according to claim 1, characterized in that: In step (3) above, collection area I and collection area II are set on one side of the conveyor roller table relative to the left side of the cold shear machine, and a steel turning machine I is set between the conveyor roller table and collection area I. It is necessary to ensure that the steel turning machine I and the conveyor roller table do not interfere with each other. Then, when the conveyor roller table moves the 8m long oversized non-standard length sheared off horizontally to the left to the position relative to collection area I, the steel turning machine I turns the 8m long oversized non-standard length sheared off into collection area I for collection.

7. A method for separating non-standard length British Standard (BST) instruments according to claim 6, characterized in that: In step (4) above, the fixed-length baffle with lifting function is set on the conveyor rollers relative to the left side of the cold shear machine, and the distance between the fixed-length baffle and the cold shear machine is 12m, and the collection area II is set on one side of the conveyor rollers relative to the area between the fixed-length baffle and the cold shear machine; the lower limit position of the fixed-length baffle must ensure that it does not interfere with the transmission action of the conveyor rollers, and its upper limit position must ensure that it can limit the left side of each section of bar on the conveyor rollers, and ensure that the left end face of each section of bar is flush.

8. A method for separating non-standard length British Standard (BST) instruments according to claim 7, characterized in that: In step (4) above, a steel turning machine II is installed between the conveyor roller conveyor and the collection area II, and it must be ensured that the steel turning machine II and the conveyor roller conveyor are not interfered with each other; the process of cutting the steel into qualified non-standard lengths of 12m by a cold shear machine and collecting them into the collection area II is as follows: (4.1) When the 8m long non-standard length of the tail section is collected into the collection area I, the standard length baffle rises and the left limit is applied to each section of bar. (4.2) Since the distance between the fixed length baffle and the cold shear machine is 12m, when the cold shear machine performs the shearing operation, it can cut a qualified non-fixed length of 12m from the first, second, third, fourth, fifth, sixth, seventh and eighth sections of the bar. (4.3) Then, the steel turning machine II turns several qualified non-standard lengths of 12m into the collection area II for collection.

9. A method for separating non-standard length British Standard (BST) instruments according to claim 1, characterized in that: In step (5) above, the pressure plate device with lifting function is set directly above the conveyor rollers relative to the right side of the cold shear machine, and the distance between the pressure plate device and the cold shear machine is 6m; the upper limit position of the pressure plate device must ensure that it does not interfere with the transmission action of the conveyor rollers, and its lower limit position must ensure that it can press the 8m long non-standard length part of the head of the first bar.

10. A method for separating non-standard length British standard items according to claim 1, characterized in that: In step (5) above, after the penultimate cut, the fourth, fifth, sixth, and seventh sections of the bar have all been cut. At this point, the first section of the bar still has 12m of qualified non-standard length and 8m of oversized non-standard length at the head. The second and third sections of the bar both have only 12m of qualified non-standard length remaining, and the eighth section has 18m of qualified non-standard length remaining. The specific process for the final cut by the cold shearing machine is as follows: (5.1) Before the final shearing, the conveyor rollers continue to advance and the first, second, third and eighth sections of bar stock are left-limited by the length baffle. (5.2) Then the pressure plate device descends vertically to press down the 8m long non-standard length part of the first section of bar; (5.3) Then the cold shear machine performs the final cut, at which point the first section of bar is cut into two parts: a 12m long qualified non-standard length and an 8m long oversized non-standard length at the head. The eighth section of bar is also cut into two parts: a 12m long qualified non-standard length and a 6m long qualified non-standard length. (5.4) Then, several qualified non-standard lengths with a fixed length of 12m are turned over by the steel turning machine II and collected in the collection area II; (5.5) Then the conveyor roller continues to move forward. At this time, since the 8m long non-standard length at the head is pressed down, while the 6m long qualified non-standard length is not pressed down, the 6m long qualified non-standard length can be moved horizontally to the left to the position relative to the collection area II. Then, it can be flipped into the collection area II by the steel flipping machine II for collection, and ensure that the 6m long qualified non-standard length is distinguished from the 12m long qualified non-standard length previously collected in the collection area II. (5.6) Then the fixed length baffle descends and the pressure plate device rises. At this time, by continuing to advance the conveyor roller, the 8m long non-standard length of the head can be moved horizontally to the left to the position relative to the collection area I. Then the 8m long non-standard length of the head is turned into the collection area I by the steel turning machine I for collection.

Images