A cold shearing machine discharging roller device and shearing method

Abstract

The present application discloses a discharge roller device and a shearing method for a cold shearing machine, which relates to the technical field of cold shearing machines and is used to solve the problem that the end of the bar stock is difficult to remove in the prior art. The device includes a pressing roller and a plurality of floating discharge roller mechanisms; the plurality of floating discharge roller mechanisms are arranged in parallel on a roller stand, the roller stand is connected to the cold shearing machine, and is arranged at the front end of the table panel of the cold shearing machine, and can support the bar stock to float up or sink down; the pressing roller is connected to the cold shearing machine, and is arranged above the floating discharge roller mechanism, and can press the bar stock downward. The device adopts the cooperation between the pressing roller and the floating discharge roller mechanism, and when the bar stock is transmitted to the end, it can still be effectively transmitted to the shear blade position of the cold shearing machine for short and broken shearing. The close transmission relationship enables extremely short tails to be pushed to the falling work surface by subsequent new bar stock, effectively solving the problem that the end of the bar stock remains on the work surface and is difficult to remove.

Description

Technical Field

[0001] The present application relates to the technical field of cold shears, and in particular to a cold shear discharge roller device and a shearing method. Background Art

[0002] Cold shears are mechanical equipment often used in the metallurgical industry to cut the heads, tails or cut to length of rolled products. As a type of shearing machine, cold shears are widely used in metallurgy, aviation, defense industry, and light industries such as printing.

[0003] After the cold shearing machine shears the rod-shaped profiles, there will always be a piece of tail material left at the end, and the length of the tail material and the straightness of the steel cannot be guaranteed. In order to quickly clean up the tail material remaining on the front surface of the blade, the existing technology often adopts an articulated connecting rod swinging scraper structure driven by an oil cylinder. After the roller conveyor with a larger spacing is separated from the power, the oil cylinder acts as a power to drive the articulated connecting rod to rotate forward from a high position, so that the push plate gradually falls within the motion trajectory to the roller table and pushes forward to remove the tail material remaining on the table. Then the push plate retracts back to the high position and waits to complete a tail sweeping action. However, due to the harsh on-site environment of the cold shearing machine equipment, and the length of the tail material and the straightness of the steel cannot be guaranteed, when the spacing of the roller group is too large to convey the tail material forward, or the length of the tail material exceeds its working stroke or the tail material is skewed, the scraper cannot remove it. Summary of the invention

[0004] The embodiment of the present application solves the problem in the prior art that the end of the bar material is difficult to remove by providing a cold shearing machine discharge roller device and a shearing method, and realizes that the end of the bar material can be automatically broken and discharged in any length and shape.

[0005] In the first aspect, an embodiment of the present invention provides a cold shearing machine discharging roller device, comprising a pressing roller and a plurality of floating discharging roller mechanisms. The plurality of floating discharging roller mechanisms are arranged in parallel on a roller stand, the roller stand is connected to the cold shearing machine and arranged at the front end of the table panel of the cold shearing machine, and can support the bar material to float up or sink down; the pressing roller is connected to the cold shearing machine and arranged above the floating discharging roller mechanism, and can press the bar material downward.

[0006] In combination with the first aspect, in a possible implementation, it further includes a plurality of pre-shearing drive rollers; the plurality of pre-shearing drive rollers are arranged in parallel at the front end of the floating discharge roller mechanism.

[0007] In combination with the first aspect, in a possible implementation, the floating discharge roller mechanism includes a floating roller and two elastic bearing assemblies. The two elastic bearing assemblies are respectively connected to the inner side of the driving side bracket and the inner side of the operating side bracket of the frame of the cold shearing machine; and the two ends of the floating roller are respectively installed on the two elastic bearing assemblies.

[0008] In combination with the first aspect, in a possible implementation, the elastic bearing assembly includes a bearing structure, two supporting structures and two elastic structures. The supporting structure is connected to the inner side of the driving side bracket or the inner side of the operating side bracket; the elastic structure is connected to the supporting structure; and the bearing structure is connected between the two elastic structures.

[0009] In combination with the first aspect, in a possible implementation, the bearing structure includes a bearing and a bearing seat. The bearing is sleeved at one end of the floating roller; the bearing seat is connected between the two elastic structures and supports one end of the floating roller.

[0010] In combination with the first aspect, in a possible implementation, the support structure includes a connecting screw plate and a bolt, wherein the bolt passes through the connecting screw plate and fixes the connecting screw plate to an inner wall of the driving side bracket or an inner wall of the operating side bracket.

[0011] In combination with the first aspect, in a possible implementation, the elastic structure includes a double-headed guide stud, a balance disc spring group and a nut. Both ends of the bottom of the bearing seat are provided with a slot, and the balance disc spring group is embedded in the slot of the bearing seat; one end of the double-headed guide stud is connected to the connecting screw plate; the other end passes through the bearing seat and the balance disc spring group; the double-headed guide stud passes through the balance disc spring group and a nut is sleeved on one end.

[0012] In combination with the first aspect, in a possible implementation, the floating roller includes a roller sleeve and a core shaft. One end of the core shaft is sleeved with the bearing and connected to the bearing seat; the roller sleeve is sleeved on the core shaft, and the bearing rotatably supports the roller sleeve.

[0013] In combination with the first aspect, in a possible implementation manner, the floating roller further includes an oil cup. The oil cup is connected to the nut.

[0014] In a second aspect, an embodiment of the present invention provides a trimming method, including:

[0015] Feeding: The bar material is conveyed to the front end of the bar material through a plurality of floating discharge roller mechanisms and reaches the table plate of the cold shearing machine, and extends to the length required for cutting;

[0016] Pressing material: the pressing roller moves downward, pressing the bar material until the front end of the bar material is embedded in the table panel;

[0017] Cold shearing: the lower shearing blade and the upper shearing blade of the cold shearing machine jointly shear the bar material;

[0018] Conveying: The pressing roller moves upward to release the pressure on the bar, and the floating discharge roller mechanism supports the bar to float out of the surface of the table panel and conveys the bar forward until the front end of the bar extends out of the table panel to the length required for shearing;

[0019] Cutting: The end of the bar is transferred to the table plate, and the lower shear blade and the upper shear blade of the cold shearing machine perform short cutting and cutting;

[0020] Discharge tail material; when the end of the bar material is transmitted to the point of losing power, the next section of new bar material is pushed down to the chute.

[0021] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0022] The embodiment of the present invention adopts the cooperation between the pressure roller and the floating discharge roller mechanism. When shearing, the pressure roller presses down the bar material, and the floating discharge roller mechanism sinks, so that the bar material is buried in the table panel of the cold shearing machine to form a good fixation; when conveying, the pressure roller is lifted, and the floating discharge roller mechanism floats up to lift the bar material and convey it forward, thereby reducing abnormal friction with the shear blade. Therefore, when the bar material is conveyed to the end, it can still be effectively conveyed to the shear blade position of the cold shearing machine for short and broken shearing. At the same time, the close conveying relationship enables extremely short tails to be pushed to the falling work surface by subsequent new bars, effectively solving the problem that the end of the bar material remains on the work surface and is difficult to remove, thereby realizing automation, and cutting and discharging of the bar material without manual assistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments of the present invention or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the installation of a cold shearing machine discharge roller device provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the structure of a cold shearing machine discharge roller device provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of the structure of a floating discharge roller mechanism provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of the structure of a floating roller provided in an embodiment of the present application;

[0028] Figure 5A schematic diagram of the structure of the elastic bearing assembly provided in an embodiment of the present application.

[0029] Figure markings: 1-cold shearing machine; 11-frame; 12-upper shearing blade; 13-lower shearing blade; 14-table panel; 15-roller stand; 11a-driving side bracket; 11b-operating side bracket; 2-discharge roller device; 20-pressing roller; 21-pre-shearing driving roller; 22-floating discharge roller mechanism; 221-floating roller; 221a-roller sleeve; 221b-core shaft; 221c-oil cup; 222-elastic bearing assembly; 222A-bearing structure; 222Aa-bearing; 222Ab-bearing seat; 222B-support structure; 222Ba-connecting screw plate; 222Bb-bolt; 222C-elastic structure; 222Ca-double-headed guide stud; 222Cb-balance disc spring group; 222Cc-nut; 3-bar stock. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the embodiments of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0032] This embodiment provides a cold shearing machine discharge roller device, please refer to the accompanying drawings in the specification. Figures 1 to 5 .

[0033] Reference Figure 1 and Figure 2As shown, a cold shearing machine discharging roller device 2 includes a pressing roller 20 and a plurality of floating discharging roller mechanisms 22. The plurality of floating discharging roller mechanisms 22 are arranged in parallel on a roller stand 15, the roller stand 15 is connected to the cold shearing machine 1, and is arranged at the front end of the table plate 14 of the cold shearing machine 1, and can support the bar material 3 to float or sink; the pressing roller 20 is connected to the cold shearing machine 1, and is arranged above the floating discharging roller mechanism 22, and can press the bar material 3 downward.

[0034] The embodiment of the present invention adopts the cooperation between the pressure roller 20 and the floating discharge roller mechanism 22. When shearing, the pressure roller 20 presses down the bar 3, and the floating discharge roller mechanism 22 sinks, so that the bar 3 is buried in the table panel 14 of the cold shearing machine 1, forming a good fixation; when conveying, the pressure roller 20 is lifted, and the floating discharge roller mechanism 22 floats up to lift the bar 3 and convey it forward, reducing abnormal friction with the shear blade. Therefore, when the bar 3 is conveyed to the end, it can still be effectively conveyed to the shear blade position of the cold shearing machine 1 for short and broken shearing. At the same time, the close conveying relationship enables extremely short tails to be pushed to the falling work surface by the subsequent new bar 3, effectively solving the problem that the end of the bar 3 remains on the work surface and is difficult to remove, thereby realizing automation, and cutting and discharging tails of the bar 3 without manual assistance.

[0035] The cold shearing machine discharge roller device 2 also includes a plurality of pre-shearing drive rollers 21. The plurality of pre-shearing drive rollers 21 are arranged in parallel at the front end of the floating discharge roller mechanism 22. The bar material 3 is transferred to the cold shearing machine 1 for shearing by the pre-shearing drive rollers 21 as a driving device.

[0036] The cold shearing machine discharge roller device 2 fully studies the shearing working principle of the cold shearing machine 1, the force analysis of the pressure drop and floating action, the equipment connection function, the friction roller sleeve 221a transmission power relationship and other factors, and cleverly uses the limited space before the shearing machine to maximize the dense arrangement of multiple groups of small roller diameters and floating floating discharge roller mechanisms 22 that are running freely to enhance the gripping force of the short and light tail materials at the end of the bar material 3. In addition, it forms a new operation mode of the last section of the minimum resistance to convey the tail materials with the pre-shearing drive roller 21 set at the front end of the floating discharge roller mechanism 22.

[0037] After the floating discharge roller mechanism 22 is subjected to the pressure of the pressing roller 20, it can drive the bar 3 to be buried in the table panel 14. The bar 3 and the pressing roller 20 form a good condition for shearing and fixing the bar 3. The floating roller 221 and the bearing seat 222Ab no longer bear additional loads, avoiding possible damage to the floating roller 221 and the bearing seat 222Ab. When the shearing is completed and the bar 3 needs to be transported forward, the pressing roller 20 is lifted, and the floating discharge roller mechanism 22 automatically lifts the bar 3 away from the table panel 14 and the lower shear blade 13 without manual operation. It ensures that during the transmission process, the abnormal friction loss between the bar 3 and the shear blade is avoided, and the sharpness and service life of the shear blade are extended.

[0038] When the driving roller 21 before the shearing cannot transport the residual tailings on the bar 3 forward, the new batch of bar 3 behind can still be used to push it forward so that the shear blade can break it. The device cleverly utilizes the structural characteristics of each mechanism and cooperates with each other. It meets and adapts to the current high-intensity production of the cold shearing machine 1 and the use requirements of unmanned auxiliary removal of tailings.

[0039] Reference Figure 3 As shown, the floating discharge roller mechanism 22 includes a floating roller 221 and two elastic bearing assemblies 222. The two elastic bearing assemblies 222 are respectively connected to the inner side of the driving side bracket 11a and the inner side of the operating side bracket 11b of the frame 11 of the cold shearing machine 1; the two ends of the floating roller 221 are respectively installed on the two elastic bearing assemblies 222. The floating roller 221 can rotate, thereby driving the bar material 3 placed on the upper surface of the floating roller 221 to move forward. The two ends of the floating roller 221 are respectively installed on the two elastic bearing assemblies 222. The elastic bearing assemblies 222 are installed on both sides of the frame 11. The elastic bearing assembly 222 can sink when the floating roller 221 is pressed downward. When the force is lost, it can automatically reset and lift the floating roller 221 to float. ,

[0040] Reference Figures 3 to 5 As shown, the elastic bearing assembly 222 includes a bearing structure 222A, two supporting structures 222B and two elastic structures 222C. The supporting structure 222B is connected to the inner side of the driving side bracket 11a or the inner side of the operating side bracket 11b, and plays the role of fixing and supporting the elastic bearing assembly 222. The elastic structure 222C is connected to the supporting structure 222B; the elastic structure 222C can be compressed and sunk, or released and reset. The bearing structure 222A is connected between the two elastic structures 222C. There are two elastic structures 222C, which are respectively arranged on both sides of one end of the floating roller 221. The bearing structure 222A is not only connected to the floating roller 221, but also connected to the two elastic structures 222C. Therefore, the floating roller 221 presses down to drive the bearing structure 222A to sink, and the bearing structure 222A presses down the two elastic structures 222C.

[0041] Reference Figure 3 and Figure 5 As shown, the bearing structure 222A includes a bearing 222Aa and a bearing seat 222Ab. The bearing 222Aa is sleeved on one end of the floating roller 221; the bearing seat 222Ab is connected between the two elastic structures 222C and supports one end of the floating roller 221.

[0042] The bearing 222Aa can rotatably support the floating roller 221. The middle of the bearing seat 222Ab is connected to one end of the floating roller 221. The lower ends of both ends of the bearing seat 222Ab are provided with slots, which are clamped on the two elastic structures 222C.

[0043] Reference Figure 4 and Figure 5 As shown, the support structure 222B includes a connecting screw plate 222Ba and a bolt 222Bb. The bolt 222Bb passes through the connecting screw plate 222Ba and fixes the connecting screw plate 222Ba to the inner wall of the driving side bracket 11a or the inner wall of the operating side bracket 11b. The connecting screw plate 222Ba includes two vertical plates and a horizontal plate. The two vertical plates are superimposed on the inner wall of the driving side bracket 11a or the inner wall of the operating side bracket 11b and fixed by the bolt 222Bb. The horizontal plate is connected to the top of the vertical plate and is connected to the elastic structure 222C to fix the supporting elastic structure 222C.

[0044] Reference Figure 5 As shown, the elastic structure 222C includes a double-headed guide stud 222Ca, a balance disc spring group 222Cb and a nut 222Cc. A slot is provided at both ends of the bottom of the bearing seat 222Ab, and the balance disc spring group 222Cb is embedded in the slot of the bearing seat 222Ab. The bearing seat 222Ab is subjected to force and moves downward along the double-headed guide stud 222Ca, and the balance disc spring group 222Cb is compressed; the bearing seat 222Ab is not subjected to force, and the balance disc spring group 222Cb is released, driving the bearing seat 222Ab to move upward and reset along the double-headed guide stud 222Ca. One end of the double-headed guide stud 222Ca is connected to the connecting screw plate 222Ba; the other end passes through the bearing seat 222Ab and the balance disc spring group 222Cb. The top of the double-headed guide stud 222Ca is connected to the horizontal plate of the connecting screw plate 222Ba, and the double-headed guide stud 222Ca passes through the bearing seat 222Ab and the balance disc spring group 222Cb in sequence. The double-headed guide stud 222Ca passes through the balance disc spring group 222Cb and is sleeved with a nut 222Cc at one end, that is, the bottom end of the double-headed guide stud 222Ca is fixed by the nut 222Cc, and the balance disc spring group 222Cb is supported when the balance disc spring group 222Cb is compressed. The balance disc spring group 222Cb can automatically float up and down without operating instructions, does not need to enter other power sources such as cylinders, is more efficient, simple and practical, can reduce manufacturing costs, and is simple to maintain.

[0045] Reference Figure 4 and Figure 5 As shown, the floating roller 221 includes a roller sleeve 221a and a core shaft 221b. One end of the core shaft 221b is sleeved with a bearing 222Aa and connected to a bearing seat 222Ab; the roller sleeve 221a is sleeved on the core shaft 221b, and the bearing 222Aa rotatably supports the roller sleeve 221a.

[0046] The bearing 222Aa is sleeved on one end of the core shaft 221b, and the outer surface of the bearing 222Aa is connected to the roller sleeve 221a, which can rotatably support the roller sleeve 221a. The end surface of the core shaft 221b is connected to the bearing seat 222Ab, which can float or sink.

[0047] The floating discharge roller mechanism 22 is provided with multiple groups, so it has multiple contact points with the bar material 3. The floating roller 221 adopts a small diameter roller sleeve 221a, which can operate flexibly with only a small friction starting torque, and together with the pre-shear driving roller 21, it ensures the roller-type close-drive conveying of the shorter tail of the bar material 3. After the floating discharge roller mechanism 22 is activated, only a very short tail of the bar material 3 will be retained, so no manual adjustment is required, and it can be used continuously and safely, meeting the requirements of fast, safe and unmanned automatic production on the shearing machine site. At the same time, the very short tail of the bar material 3 can also be pushed down by the subsequent bar material 3.

[0048] Reference Figure 4 As shown, the floating roller 221 further includes an oil cup 221c. The oil cup 221c is connected to the nut 222Cc.

[0049] The oil cup 221 c is generally connected to a nut 222Cc of the elastic structure 222C of the driving side bracket 11 a to lubricate the floating roller 221 .

[0050] This embodiment provides a cutting method. Please refer to the accompanying drawings in the specification. Figures 1 to 5 .

[0051] Feeding: The bar material 3 is conveyed to the front end of the bar material 3 by a plurality of floating discharge roller mechanisms 22 to the table plate 14 of the cold shearing machine 1, and extends to the length required for cutting;

[0052] Pressing: The pressing roller 20 moves downward, pressing the bar 3 until the front end of the bar 3 is embedded in the table panel 14;

[0053] Cold shearing: The lower shearing blade 13 and the upper shearing blade 12 of the cold shearing machine 1 jointly shear the bar material 3;

[0054] Conveying: The pressing roller 20 moves upward to release the pressure on the bar 3, and the floating discharge roller mechanism 22 supports the bar 3 to float on the surface of the table panel 14, and conveys the bar 3 forward until the front end of the bar 3 extends out of the table panel 14 to the length required for cutting and discharging;

[0055] Cutting: The end of the bar 3 is transferred to the table plate 14, and the lower shear blade 13 and the upper shear blade 12 of the cold shear 1 perform short cutting shearing;

[0056] Discharge tail material; when the end of the rod 3 is transmitted to the point where power is lost, the next section of new rod 3 is pushed down to the chute.

[0057] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0058] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A cold shearing machine discharge roller device (2), characterized in that: It comprises a pressing roller (20) and a plurality of floating discharge roller mechanisms (22); A plurality of the floating material discharge roller mechanisms (22) are arranged in parallel on a roller stand (15); the roller stand (15) is connected to the cold shearing machine (1) and is arranged at the front end of a table panel (14) of the cold shearing machine (1), and is capable of supporting the bar material (3) to float up or sink; The pressing roller (20) is connected to the cold shearing machine (1) and is arranged above the floating discharge roller mechanism (22), and is capable of pressing the bar material (3) downwards; The floating discharge roller mechanism (22) comprises a floating roller (221) and two elastic bearing assemblies (222); The two elastic bearing assemblies (222) are respectively connected to the inner side of a driving side bracket (11a) and the inner side of an operating side bracket (11b) of a frame (11) of the cold shearing machine (1); Both ends of the floating roller (221) are respectively mounted on the two elastic bearing assemblies (222); The elastic bearing assembly (222) comprises a bearing structure (222A), two support structures (222B) and two elastic structures (222C); The support structure (222B) is connected to the inner side of the driving side bracket (11a) or the inner side of the operating side bracket (11b); The elastic structure (222C) is connected to the supporting structure (222B); The bearing structure (222A) is connected between the two elastic structures (222C); It also includes a plurality of pre-shear drive rollers (21); The plurality of pre-shear drive rollers (21) are arranged in parallel at the front end of the floating discharge roller mechanism (22); The bearing structure (222A) comprises a bearing (222Aa) and a bearing seat (222Ab); The bearing (222Aa) is sleeved on one end of the floating roller (221); The bearing seat (222Ab) is connected between the two elastic structures (222C) and supports one end of the floating roller (221); The floating roller (221) comprises a roller sleeve (221a) and a core shaft (221b); One end of the core shaft (221b) is sleeved with the bearing (222Aa) and is connected to the bearing seat (222Ab); The roller sleeve (221a) is sleeved on the core shaft (221b), and the bearing (222Aa) rotatably supports the roller sleeve (221a); The floating material discharge roller mechanism (22) is provided with multiple groups, so that it has multiple contact points with the bar material (3). The floating roller (221) adopts a small diameter roller sleeve (221a), which can operate flexibly with only a small friction starting torque. Together with the pre-shear driving roller (21), it ensures roller-type close-drive conveying of the shorter tail of the bar material (3).

2. The cold shearing machine discharge roller device according to claim 1, characterized in that: The supporting structure (222B) comprises a connecting screw plate (222Ba) and a bolt (222Bb); The bolt (222Bb) passes through the connecting screw plate (222Ba) and fixes the connecting screw plate (222Ba) to the inner wall of the driving side bracket (11a) or the inner wall of the operating side bracket (11b).

3. The cold shearing machine discharge roller device according to claim 2, characterized in that: The elastic structure (222C) comprises a double-headed guide stud (222Ca), a balance disc spring assembly (222Cb) and a nut (222Cc); Both ends of the bottom of the bearing seat (222Ab) are provided with slots, and the balance disc spring assembly (222Cb) is embedded in the slots of the bearing seat (222Ab); One end of the double-headed guide stud (222Ca) is connected to the connecting screw plate (222Ba); The other end passes through the bearing seat (222Ab) and the balance disc spring assembly (222Cb); The double-headed guide stud (222Ca) passes through one end of the balance disc spring assembly (222Cb) and is sleeved with a nut (222Cc).

4. The cold shearing machine discharge roller device according to claim 3, characterized in that: The floating roller (221) further includes an oil cup (221c); The oil cup (221c) is connected to the nut (222Cc).

5. A shearing method using the cold shearing machine discharge roller device according to any one of claims 1 to 4, comprising: Feeding: The bar material (3) is conveyed to the front end of the bar material (3) via a plurality of the floating discharge roller mechanisms (22) and reaches the table panel (14) of the cold shearing machine (1), and extends to the length required for cutting; Pressing the material: the pressing roller (20) moves downward to press the bar material (3) until the front end of the bar material (3) is embedded in the table panel (14); Cold shearing: the lower shearing blade (13) and the upper shearing blade (12) of the cold shearing machine (1) jointly shear the bar material (3); Conveying: the pressing roller (20) moves upward to release the pressure on the bar (3), and the floating discharge roller mechanism (22) supports the bar (3) to float out of the surface of the table panel (14), and conveys the bar (3) forward until the front end of the bar (3) protrudes from the table panel (14) to the length required for cutting and discharging; Cutting: the end of the bar (3) is transferred to the table panel (14), and the lower shearing blade (13) and the upper shearing blade (12) of the cold shearing machine (1) perform short cutting and cutting; Discharge the tail material; when the end of the rod material (3) loses power during transmission, the next section of new rod material (3) is pushed down into the chute.

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