Hole pattern of cogging mill for bars and roll changing steps of cogging mill

Abstract

The invention discloses a hole pattern of a cogging mill for bars and a roll changing step of the cogging mill, and relates to the technical field of hole patterns of cogging mills. According to the cogging mill hole pattern for the bar and the roll changing step of the cogging mill, the cogging mill hole pattern for the bar comprises five hole patterns including K5, K4, K3, K2 and K1, and the diameter of a roll body is 1100 mm; the notch of the K5 is 380 to 400mm, the bottom of the K5 is 350 to 360mm, the angle R of the hole pattern is 23 to 27mm, the angle r of the hole pattern is 23 to 27mm, the slope of the side wall is 14 to 16 degrees, and the height of the K5 is 145 to 155mm; a K4 notch is 330 mm to 340 mm, the groove bottom is 295 mm to 305 mm, the hole pattern R angle is 23 mm to 27 mm, the hole pattern r angle is 23 mm to 27 mm, the side wall inclination is 13 degrees to 15 degrees, and the groove height is 145 mm to 155 mm. A K3 notch is 270-280 mm, a groove bottom is 235-245 mm, a hole pattern R angle is 28-32 mm, a hole pattern r angle is 23-27 mm, the slope of the side wall is 12-14 degrees, and the groove height is 165-175 mm; a K2 notch is 225-235 mm, a groove bottom is 195-200 mm, a hole pattern R angle is 28-32 mm, a hole pattern r angle is 23-27 mm, the slope of the side wall is 12-14 degrees, and the groove height is 165-175 mm; the K1 notch is 200-210 mm, the groove bottom is 165-175 mm, the hole pattern R angle is 28-32 mm, the hole pattern r angle is 23-27 mm, the slope of the side wall is 12-14 degrees, and the groove height is 165-175 mm.

Description

Technical Field

[0001] The invention relates to the technical field of hole profiles of a blanking machine, and in particular to a hole profile of a blanking machine for a bar and a roll changing step of the blanking machine. Background Art

[0002] The main function of the billet mill is to reciprocate and roll the billet heated by the heating furnace into an intermediate billet of a certain size for use by the continuous rolling mill. During the rolling process, the billet mill can automatically adjust the amount of reduction according to the pre-set tool parameters and rolling program to achieve the desired rolling effect. However, the billet mill also has some disadvantages, such as low output, low yield rate, many operators and relatively backward technology. Therefore, it is necessary to design and develop a set of bar billet mill hole system, which can try a variety of billet sections and improve the output of the billet mill.

[0003] Patent announcement number: CN218340652U discloses a blanking machine pass type used for a set of rollers to roll various cross-section billets, with roller pass type 4, roller pass type 3, and roller pass type 2 on the rollers. The blanking machine pass type used for a set of rollers to roll various cross-section billets of φ60-φ250mm round steel reduces the width of the roller pass type 3 and the width of the roller rings of the middle holes, and increases the number of pass types from 3 to 4, thereby reducing the roll changing time. It realizes the production of φ60-Φ250mm cross-section round steel and 140-200×170-240mm large-size electrode flat steel from billets with cross-sections of 240×240mm, 280×380mm, 320×415mm, and Φ200-Φ350mm. However, this hole type system has only four pairs of hole types, the cross-section of the billet that can be rolled is limited, and the probability of abnormal wear of the rolling groove of the billet opening machine is high. Summary of the invention

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a hole type of a bar blanking machine and a roll changing step of the blanking machine, which can solve the above-mentioned problem.

[0005] To achieve the above object, the present invention provides the following technical solutions: a hole type of a blanking machine for bars, including five hole types, K5, K4, K3, K2, K1, and a roller body diameter of 1100mm;

[0006] The K5 notch is 380-400mm, the bottom of the groove is 350-360mm, the hole R angle is 23-27mm, the r angle is 23-27mm, the side wall slope is 14-16°, and the groove height is 145-155mm;

[0007] The K4 notch is 330-340mm, the bottom of the groove is 295-305mm, the hole R angle is 23-27mm, the r angle is 23-27mm, the side wall slope is 13-15°, and the groove height is 145-155mm;

[0008] The K3 notch is 270-280mm, the bottom of the groove is 235-245mm, the hole R angle is 28-32mm, the r angle is 23-27mm, the side wall slope is 12-14°, and the groove height is 165-175mm;

[0009] The K2 notch is 225-235mm, the groove bottom is 195-200mm, the hole R angle is 28-32mm, the r angle is 23-27mm, the side wall slope is 12-14°, and the groove height is 165-175mm;

[0010] The K1 notch is 200-210mm, the groove bottom is 165-175mm, the hole R angle is 28-32mm, the r angle is 23-27mm, the side wall slope is 12-14°, and the groove height is 165-175mm.

[0011] Preferably, the distance between the K5-K1 hole types is 53 mm.

[0012] Preferably, K1 is 100 mm away from the roller head, and K5 is 100 mm away from the roller bottom.

[0013] Preferably, the diameter of the upper roller is 1100-1102 mm, and the diameter of the lower roller is 1096-1098 mm.

[0014] Preferably, the hole size is designed as follows: from K5 to K1, the size of the notch and the bottom of the notch gradually decreases to adapt to the gradual compression of the bar during the rolling process.

[0015] Preferably, the hole spacing is designed as follows: the distance between the K5-K1 holes is 53 mm.

[0016] Preferably, K1 is 100 mm away from the roller head, and K5 is 100 mm away from the roller bottom.

[0017] Preferably, the roller diameter is designed as follows: the upper roller diameter is 1100-1102 mm, and the lower roller diameter is 1096-1098 mm.

[0018] Preferably, a step of changing the rolls of a bar blanking machine comprises the following steps: S1 preparation work before changing the rolls, safety preparation ensuring that the blanking machine has been stopped, and the power supply has been cut off, a warning sign of "Do not close the switch, someone is working" is hung, and the operator wears personal protective equipment, such as a safety helmet, work clothes, gloves, and safety shoes;

[0019] Tool preparation: prepare the tools needed for roller replacement, such as wrenches, jacks, lifting tools, and crowbars, and check the integrity and reliability of the tools;

[0020] Preparation of new rolls: hoist the new rolls to the vicinity of the roll replacement site, check the surface quality, dimensional accuracy and roll number of the rolls to ensure that the rolls meet production requirements;

[0021] S2 Remove the old roll, loosen the locking nut and connecting bolts of the roll shaft head, and use a suitable wrench to gradually loosen the locking nut and connecting bolts of the roll shaft head in diagonal order. Be careful to keep the removed nuts and bolts;

[0022] To eject the roll, place jacks under the shaft heads at both ends of the roll, and slowly raise the jacks synchronously to eject the roll from the frame by a certain distance, so that the roll is separated from the frame;

[0023] Lift the old rolls, use the lifting equipment to lift the old rolls and smoothly lift them to the designated storage location

[0024] S3 Install the new roll, lift the new roll, use the lifting device to lift the new roll to the top of the frame, slowly lower it, align the shaft heads at both ends of the roll with the mounting holes on the frame, install the roll, slowly lower the new roll, and install it smoothly into the frame, ensure that the installation position of the roll is accurate, tighten the connecting bolts and locking nuts, use a wrench to gradually tighten the connecting bolts and locking nuts of the roll shaft head in diagonal order, and the tightening torque should meet the technical requirements of the equipment;

[0025] S4 Inspection and debugging after roll change, check the installation of the rolls, check the installation position, horizontality and verticality of the rolls, ensure that the rolls are firmly installed and not loose, check the lubrication system, check the lubrication system of the rolls, ensure that the oil circuit is unobstructed and the lubricating grease is sufficient, debug the rolls, turn on the power, start the blanking machine, conduct idling debugging, check the operation of the rolls, check whether there are abnormal sounds, vibrations and heat, and conduct load trial production. After the idling debugging is normal, conduct load trial production, check the dimensional accuracy, surface quality and production efficiency of the rolled material, and ensure that the blanking machine can produce normally after the roll change;

[0026] S5 Clean up the site, clean up tools and debris, clean up the tools and debris used in the roll changing process, store them in categories, clean up the oil stains, clean up the oil stains generated during the roll changing process, and keep the site environment clean.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The hole type of the bar blanking machine has the following advantages: high efficiency: through the precise hole size and spacing design, the hole system can achieve efficient bar rolling and improve production efficiency;

[0029] Stability: Reasonable hole design makes the rolling process more stable, reducing possible failures and problems during the rolling process. The design of the upper and lower roll diameters ensures the strength and life of the rolls, further enhancing the stability of the rolling process;

[0030] Product quality: Through the optimization of hole design, the hole system can produce bar products with precise dimensions and good surface quality;

[0031] Flexibility: This hole system is suitable for rolling bars of various specifications and materials, and has strong flexibility;

[0032] Economical: By improving production efficiency and product quality, the hole system can reduce production costs and improve economic benefits. In summary, the hole system of the bar blanking machine has the advantages of high efficiency, stability, product quality, flexibility and economy through precise design and optimization, and can meet the needs of bar rolling.

[0033] 2. The bar uses the step of opening and changing the rolls. This step has the following effects and is highly safe: before changing the rolls, make sure to stop the machine, cut off the power supply, set up warning signs, and the operators wear personal protective equipment. Pay attention to safety measures throughout the process, which can effectively reduce the risk of safety accidents;

[0034] Adequate preparation: Make adequate preparations for safety, tools and new rolls before roll changing, making the roll changing process more efficient and orderly, and reducing delays and mistakes caused by insufficient preparation;

[0035] Clear steps: The roll changing process is divided into detailed steps of dismantling the old rolls, installing the new rolls, inspection and debugging after roll changing, and cleaning the site. Each step has a clear operation process and sequence, which is easy for operators to understand and execute, and helps to improve the quality and efficiency of roll changing work.

[0036] 3. The quality assurance of the roll changing procedure of the bar blanking machine: the inspection and debugging after the roll changing can timely find the problems in the roll installation and equipment operation, ensure the roll installation in place and the normal operation of the equipment, thus ensuring the dimensional accuracy, surface quality and production efficiency of the rolled material;

[0037] Clean environment: The plan emphasizes the cleaning of the site, which helps to keep the working environment clean, reduce the adverse effects of debris and oil on equipment and work areas, and is also conducive to the development of subsequent work and maintenance of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0039] Figure 1 It is a schematic diagram of the K1-K5 hole type of the present invention; DETAILED DESCRIPTION

[0040] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, and right, and the orientation or positional relationship indicated are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In the description of the present invention, "greater than", "less than" and "exceed" are understood as not including the number itself, and "above", "below" and "within" are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0043] In the description of the present invention, unless otherwise clearly defined, the terms such as setting, installing and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0044] See also Figure 1 , the present invention provides a technical solution: a hole type of a blanking machine for bars, the roller body diameter is 1100mm, including five hole types, K5, K4, K3, K2, K1;

[0045] The K5 notch is 380-400mm, the bottom of the groove is 350-360mm, the hole R angle is 23-27mm, the r angle is 23-27mm, the side wall slope is 14-16°, and the groove height is 145-155mm;

[0046] The K4 slot is 330-340mm, the slot bottom is 295-305mm, the hole R angle is 23-27mm, the r angle is 23-27mm, the side wall slope is 13-15°, and the slot height is 145-155mm;

[0047] The K3 notch is 270-280mm, the groove bottom is 235-245mm, the hole R angle is 28-32mm, the r angle is 23-27mm, the side wall slope is 12-14°, and the groove height is 165-175mm;

[0048] The K2 slot is 225-235mm, the slot bottom is 195-200mm, the hole R angle is 28-32mm, the r angle is 23-27mm, the side wall slope is 12-14°, and the slot height is 165-175mm;

[0049] K1 slot is 200-210mm, slot bottom is 165-175mm, hole R angle is 28-32mm, r angle is 23-27mm, side wall slope is 12-14°, slot height is 165-175mm;

[0050] The distance between K5-K1 hole types is 53mm.

[0051] K1 is 100mm away from the roller head, and K5 is 100mm away from the roller bottom;

[0052] At the same time, in this system, the diameter of the upper roller is 1100-1102mm, and the diameter of the lower roller is 1096-1098mm;

[0053] Furthermore, the hole size is designed as follows: from K5 to K1, the size of the notch and the bottom of the groove gradually decreases to adapt to the gradual compression of the bar during rolling;

[0054] The design of the R and r angles of the pass takes into account the flow and deformation of the metal during rolling, ensuring the stability of the rolling process and product quality;

[0055] The design of the side wall slope and groove height takes into account the rolling force and rolling efficiency, ensuring the high efficiency and stability of the rolling process;

[0056] Pass spacing design: The distance between K5-K1 pass is 53mm. This design is conducive to the manufacture and installation of rolls, while ensuring the continuity and stability of the rolling process;

[0057] K1 is 100mm away from the roller head, and K5 is 100mm away from the roller bottom. This design takes into account the overall structure of the roller and the needs of the rolling process;

[0058] Roller diameter design: upper roll diameter 1100-1102mm, lower roll diameter 1096-1098mm. This design takes into account the stress conditions during rolling and the life of the rolls, ensuring the stability of the rolling process and the durability of the rolls.

[0059] Furthermore, the solution has the following advantages: High efficiency: through precise hole size and spacing design, the hole system can achieve efficient bar rolling and improve production efficiency;

[0060] Stability: Reasonable hole design makes the rolling process more stable, reducing possible failures and problems during the rolling process. The design of the upper and lower roll diameters ensures the strength and life of the rolls, further enhancing the stability of the rolling process;

[0061] Product quality: Through the optimization of hole design, the hole system can produce bar products with precise dimensions and good surface quality;

[0062] Flexibility: This hole system is suitable for rolling bars of various specifications and materials, and has strong flexibility;

[0063] Economical: By improving production efficiency and product quality, the hole system can reduce production costs and improve economic benefits. In summary, the hole system of the bar blanking machine has the advantages of high efficiency, stability, product quality, flexibility and economy through precise design and optimization, and can meet the needs of bar rolling.

[0064] Further, a step of changing the rolls of a bar blanking machine comprises the following steps: S1 preparation work before changing the rolls, safety preparation ensuring that the blanking machine has been stopped, and the power supply has been cut off, a warning sign of "Do not close the switch, someone is working" is hung, and the operator wears personal protective equipment, such as a safety helmet, work clothes, gloves, and safety shoes;

[0065] Tool preparation: prepare the tools needed for roller replacement, such as wrenches, jacks, lifting tools, and crowbars, and check the integrity and reliability of the tools;

[0066] Preparation of new rolls: hoist the new rolls to the vicinity of the roll replacement site, check the surface quality, dimensional accuracy and roll number of the rolls to ensure that the rolls meet production requirements;

[0067] S2 Remove the old roll, loosen the locking nut and connecting bolts of the roll shaft head, and use a suitable wrench to gradually loosen the locking nut and connecting bolts of the roll shaft head in diagonal order. Be careful to keep the removed nuts and bolts;

[0068] To eject the roll, place jacks under the shaft heads at both ends of the roll, and slowly raise the jacks synchronously to eject the roll from the frame by a certain distance, so that the roll is separated from the frame;

[0069] Lift the old rolls, use the lifting equipment to lift the old rolls and smoothly lift them to the designated storage location

[0070] S3 Install the new roll, lift the new roll, use the lifting device to lift the new roll to the top of the frame, slowly lower it, align the shaft heads at both ends of the roll with the mounting holes on the frame, install the roll, slowly lower the new roll, and install it smoothly into the frame, ensure that the installation position of the roll is accurate, tighten the connecting bolts and locking nuts, use a wrench to gradually tighten the connecting bolts and locking nuts of the roll shaft head in diagonal order, and the tightening torque should meet the technical requirements of the equipment;

[0071] S4 Inspection and debugging after roll change, check the installation of the rolls, check the installation position, horizontality and verticality of the rolls, ensure that the rolls are firmly installed and not loose, check the lubrication system, check the lubrication system of the rolls, ensure that the oil circuit is unobstructed and the lubricating grease is sufficient, debug the rolls, turn on the power, start the blanking machine, conduct idling debugging, check the operation of the rolls, check whether there are abnormal sounds, vibrations and heat, and conduct load trial production. After the idling debugging is normal, conduct load trial production, check the dimensional accuracy, surface quality and production efficiency of the rolled material, and ensure that the blanking machine can produce normally after the roll change;

[0072] S5 Clean up the site, clean up tools and debris, clean up the tools and debris used in the roll changing process, store them in categories, clean up the oil stains, clean up the oil stains generated during the roll changing process, and keep the site environment clean.

[0073] Furthermore, this step has the following effects and is highly safe: before changing the roller, ensure that the machine is shut down, the power is cut off, and warning signs are set up; the operators wear personal protective equipment; and safety measures are emphasized throughout the process, which can effectively reduce the risk of safety accidents.

[0074] Adequate preparation: Adequate preparation of safety, tools and new rolls before roll changing makes the roll changing process more efficient and orderly, reducing delays and mistakes caused by insufficient preparation.

[0075] Clear steps: The roll changing process is divided into detailed steps of dismantling the old rolls, installing the new rolls, inspection and debugging after roll changing, and cleaning the site. Each step has a clear operation process and sequence, which is easy for operators to understand and execute, and helps to improve the quality and efficiency of roll changing work.

[0076] Quality assurance: The inspection and debugging after roll replacement can promptly identify problems in roll installation and equipment operation, ensuring that the rolls are properly installed and the equipment operates normally, thereby ensuring the dimensional accuracy, surface quality and production efficiency of the rolled products.

[0077] Clean environment: The plan emphasizes the cleaning of the site, which helps to keep the working environment clean, reduce the adverse effects of debris and oil on equipment and work areas, and is also conducive to the development of subsequent work and maintenance of equipment.

[0078] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A hole profile for a bar blanking machine, characterized in that: There are five hole types, K5, K4, K3, K2, K1, and the roller diameter is 1100mm; The K5 notch is 380-400mm, the bottom of the groove is 350-360mm, the hole R angle is 23-27mm, the r angle is 23-27mm, the side wall slope is 14-16°, and the groove height is 145-155mm; The K4 notch is 330-340mm, the bottom of the groove is 295-305mm, the hole R angle is 23-27mm, the r angle is 23-27mm, the side wall slope is 13-15°, and the groove height is 145-155mm; The K3 notch is 270-280mm, the bottom of the groove is 235-245mm, the hole R angle is 28-32mm, the r angle is 23-27mm, the side wall slope is 12-14°, and the groove height is 165-175mm; The K2 notch is 225-235mm, the groove bottom is 195-200mm, the hole R angle is 28-32mm, the r angle is 23-27mm, the side wall slope is 12-14°, and the groove height is 165-175mm; The K1 notch is 200-210mm, the groove bottom is 165-175mm, the hole R angle is 28-32mm, the r angle is 23-27mm, the side wall slope is 12-14°, and the groove height is 165-175mm.

2. The hole profile of a bar blanking machine according to claim 1, characterized in that: The distance between the K5-K1 holes is 53 mm.

3. The hole profile of the bar blanking machine according to claim 1 is characterized in that: The distance between K1 and the roller head is 100 mm, and the distance between K5 and the roller bottom is 100 mm.

4. The hole profile of a bar blanking machine according to claim 1, characterized in that: The diameter of the upper roller is 1100-1102 mm, and the diameter of the lower roller is 1096-1098 mm.

5. The hole profile of a bar blanking machine according to claim 1, characterized in that: The hole size design is as follows: from K5 to K1, the size of the groove opening and the groove bottom gradually decreases to adapt to the gradual compression of the bar during the rolling process.

6. The hole profile of a bar blanking machine according to claim 1, characterized in that: The hole spacing design: the distance between K5-K1 holes is 53mm.

7. The hole profile of a bar blanking machine according to claim 1, characterized in that: The distance between K1 and the roller head is 100 mm, and the distance between K5 and the roller bottom is 100 mm.

8. The hole profile of a bar blanking machine according to claim 1, characterized in that: The roller diameter design is: the upper roller diameter is 1100-1102mm, and the lower roller diameter is 1096-1098mm.

9. A step of changing rolls of a bar blanking machine, characterized in that: It includes the following steps: S1 Preparation before changing the rolls, Safety preparation: Ensure that the blanking machine has been stopped, and the power supply has been cut off, and a warning sign "Do not close the switch, someone is working" is hung, and the operator wears personal protective equipment, such as safety helmets, work clothes, gloves, and safety shoes; Tool preparation: prepare the tools needed for roller replacement, such as wrenches, jacks, lifting tools, and crowbars, and check the integrity and reliability of the tools; Preparation of new rolls: hoist the new rolls to the vicinity of the roll replacement site, check the surface quality, dimensional accuracy and roll number of the rolls to ensure that the rolls meet the production requirements; S2 Remove the old roll, loosen the locking nut and connecting bolts of the roll shaft head, and use a suitable wrench to gradually loosen the locking nut and connecting bolts of the roll shaft head in diagonal order. Be careful to keep the removed nuts and bolts; To eject the roll, place jacks under the shaft heads at both ends of the roll, and slowly raise the jacks synchronously to eject the roll from the frame by a certain distance, so that the roll is separated from the frame; Lift the old rolls, use the lifting equipment to lift the old rolls and smoothly lift them to the designated storage location S3 Install the new roll, lift the new roll, use the lifting device to lift the new roll to the top of the frame, slowly lower it, align the shaft heads at both ends of the roll with the mounting holes on the frame, install the roll, slowly lower the new roll, and install it smoothly into the frame, ensure that the installation position of the roll is accurate, tighten the connecting bolts and locking nuts, use a wrench to gradually tighten the connecting bolts and locking nuts of the roll shaft head in diagonal order, and the tightening torque should meet the technical requirements of the equipment; S4 Inspection and debugging after roll change, check the installation of the rolls, check the installation position, horizontality and verticality of the rolls, ensure that the rolls are firmly installed and not loose, check the lubrication system, check the lubrication system of the rolls, ensure that the oil circuit is unobstructed and the lubricating grease is sufficient, debug the rolls, turn on the power, start the blanking machine, conduct idling debugging, check the operation of the rolls, check whether there are abnormal sounds, vibrations and heat, and conduct load trial production. After the idling debugging is normal, conduct load trial production, check the dimensional accuracy, surface quality and production efficiency of the rolled material, and ensure that the blanking machine can produce normally after the roll change; S5 Clean up the site, clean up tools and debris, clean up the tools and debris used in the roll changing process, store them in categories, clean up the oil stains, clean up the oil stains generated during the roll changing process, and keep the site environment clean.

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