WO2024040682A1 - Multi-roller straightening machine and high-strength steel plate and strip heat treatment production system - Google Patents

Abstract

The present invention relates to a multi-roller straightening machine, comprising a frame, an upper roller box, and an upper roller box driving device. The upper roller box driving device comprises a lifting/lowering seat, a lifting/lowering driving structure, and screw transmission structures; the upper roller box is installed on the lifting/lowering seat; each screw transmission structure comprises a transmission screw and a transmission nut which can fit with each other; the lifting/lowering seat is fixedly connected to the transmission screws; the transmission nuts are fixedly installed on the frame; the lifting/lowering driving structure is installed on the frame and is transmittingly connected to the transmission screws; each transmission screw is sleeved with a compression spring; one end of the compression spring abuts against the frame, and the other end of the compression spring abuts against a pressing plate connected to the transmission screws. In addition, the present invention also relates to a high-strength steel plate and strip heat treatment production system provided with the multi-roller straightening machine. According to the multi-roller straightening machine provided by the present invention, by sleeving the transmission screw with the compression spring, the fitting clearance between the transmission screw and the transmission nut can be well eliminated, and the lifting/lowering movement reliability and the lifting/lowering precision of the lifting/lowering seat and the upper roller box are improved, thereby improving the straightening precision of the straightening machine.

Description

Multi-roller straightening machine and high-strength steel plate and strip heat treatment production system Technical field

The invention belongs to the technical field of strip production, and specifically relates to a multi-roller straightening machine and a high-strength steel plate and strip heat treatment production system equipped with the multi-roller straightening machine.

Background technique

At present, multi-roller straighteners are widely used in strip continuous production and processing lines in the metallurgical industry. In conventionally designed multi-roller straighteners, the upper roller box is generally driven up and down by a screw mechanism. However, due to the lifting of the transmission screw The hanging lifting seat, swing seat and upper roller box are very heavy. In long-term operation, the matching gap between the transmission screw rod and the transmission screw mother will be too large, affecting the accurate setting of the reduction amount and resulting in straightening accuracy. insufficient.

Contents of the invention

The present invention relates to a multi-roller straightening machine and a high-strength steel plate and strip heat treatment production system equipped with the multi-roller straightening machine, which can at least solve some of the defects of the prior art.

The invention relates to a multi-roller straightening machine, which includes a frame, an upper roller box and an upper roller box driving device. The upper roller box driving device includes a lifting seat, a lifting driving structure and a screw transmission structure. The upper roller box Installed on the lifting base, the screw transmission structure includes a matching transmission screw and a transmission nut. The lifting base is fixedly connected to the transmission screw, and the transmission nut is fixedly installed on the machine. On the frame, the lifting drive structure is installed on the frame and is drivingly connected to the transmission screw. A compression spring is installed on the transmission screw. One end of the compression spring is in contact with the frame, and the other end of the compression spring is in contact with the frame. One end is in contact with the pressure plate connected to the transmission screw rod.

As one of the embodiments, multiple sets of screw transmission structures are provided on both the operating side and the transmission side of the frame. Each transmission screw on each side is connected to the same pressure plate, and each of the transmission screws has a The compression spring is sleeved and each compression spring is in contact with the pressure plate on the corresponding side.

As one of the embodiments, the pressure plate is movably sleeved on the transmission screw rod and the upper plate surface is in contact with the lock nut screwed on the top of the transmission screw rod. The compression spring is connected to the lower part of the pressure plate. The panels are in contact.

As one embodiment, the top of the transmission screw is a stepped shaft section that is narrow at the top and wide at the bottom, and the pressure plate is sleeved on the small diameter section of the stepped shaft section.

As one of the embodiments, the upper roller box driving device further includes a swing seat and a swing drive mechanism. The swing seat is swingably provided on the lifting base, and the swing drive mechanism is installed on the lifting base. It is connected with the swing base, and the upper roller box is installed on the swing base.

As one embodiment, the swing drive mechanism includes a swing drive unit, a swing drive shaft connected to the swing drive unit, and an eccentric sleeve installed on the swing drive shaft, and a swing bracket is provided on the swing seat. The eccentric sleeve is in sliding fit with the swing bracket.

As one embodiment, the eccentric sleeve is connected to the swing transmission shaft through a hook wedge key.

As one of the embodiments, the lifting base is provided with an arc-shaped guide surface, and the swing seat is correspondingly provided with an arc-shaped guide portion, and the arc-shaped guide portion is slidably matched with the arc-shaped guide surface.

The invention also relates to a high-strength steel plate and strip heat treatment production system, which includes a preparation unit, a high-temperature heat treatment unit, a low-temperature heat treatment unit and a product collection unit connected in sequence;

The preparation unit includes an uncoiling device, a rough straightening device and a first shearing device arranged in sequence;

The product collection unit includes a finishing device and a steel plate stacking section;

The rough straightening device and/or the finishing device adopts the above-mentioned multi-roller straightening machine.

The present invention at least has the following beneficial effects:

The multi-roller straightening machine provided by the present invention can better eliminate the matching gap between the transmission screw and the transmission screw nut by installing a compression spring on the transmission screw rod, and improve the reliability of the lifting movement of the lifting seat and the upper roller box. and lifting accuracy, thereby improving the straightening accuracy of the straightening machine.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a multi-roller straightening machine provided by an embodiment of the present invention;

Figure 2 is a cross-sectional view of A-A in Figure 1;

Figure 3 is a schematic diagram of the sliding fit between the eccentric sleeve and two swing sliders provided by the embodiment of the present invention;

Figure 4 is a schematic structural diagram of a heat treatment production system for high-strength steel plates and strips provided by an embodiment of the present invention;

Figure 5 is a schematic flow chart of the heat treatment production method of high-strength steel plate and strip provided by the embodiment of the present invention;

Figure 6 is a schematic structural diagram of a strip cutting device provided in Embodiment 3 of the present invention;

Figure 7 is a schematic structural diagram of a strip conveying device provided in Embodiment 3 of the present invention;

Figure 8 is a plan view of the strip conveying device provided in Embodiment 3 of the present invention;

Figure 9 is a schematic structural diagram of a strip pressing mechanism provided in Embodiment 3 of the present invention;

Figure 10 is a schematic diagram of the arrangement of the guide plate on the compression frame provided in the third embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Embodiment 1

As shown in Figures 1 and 2, the embodiment of the present invention provides a multi-roller straightening machine, which includes a frame 1, an upper roller box 2 and an upper roller box driving device. The upper roller box driving device includes a lifting seat 4, a lifting drive structure and screw drive structure. The upper roller box 2 is installed on the lifting base 4. The screw transmission structure includes a matching driving screw 601 and a driving screw nut 602. The lifting base 4 is connected to the lifting base 4. The transmission screw 601 is fixedly connected, the transmission nut 602 is fixedly installed on the frame 1, the lifting drive structure is installed on the frame 1 and is drivingly connected with the transmission screw 601. A compression spring 7 is installed on the screw rod 601. One end of the compression spring 7 is in contact with the frame 1, and the other end is in contact with the pressure plate 701 connected to the transmission screw rod 601.

The above-mentioned multi-roller straightening machine also includes a lower roller box 3. By controlling the reduction amount of the upper roller box 2, the straightening purpose can be achieved.

In one embodiment, the above-mentioned lifting drive structure includes a lifting drive unit 605, a transmission worm 604 and a transmission worm wheel 603. The lifting drive unit 605 drives the transmission worm 604 to rotate, driving the transmission worm gear 603 to rotate, and then the transmission worm gear 603 drives the transmission worm 604 to rotate. The transmission screw 601 rotates; the above-mentioned lifting drive unit 605 can use a gear motor or other rotation drive equipment, and the transmission worm gear 603 and the transmission screw 601 can use a key connection or other forms.

Generally, the above-mentioned screw transmission structure is provided on both the operating side and the transmission side of the frame to ensure the stability of the lifting base 4. Further, as shown in Figures 1 and 2, multiple sets of screw transmission structures are provided on both the operating side and the transmission side of the frame. Each screw transmission structure on each side can be driven by the same lifting drive unit 605. Specifically, : The number of transmission worm gears 603 and transmission screw rods 601 are the same and configured in a one-to-one correspondence, then the number of transmission worms 604 and transmission screw rods 601 are also the same. Each transmission worm 604 can be connected in series through a synchronous connecting rod 606. The synchronous connecting rod 606 can be connected to the above-mentioned lifting drive unit 605 through a coupling 607; wherein, the transmission worm 604 can be a hollow rod and can be set and fixed on the synchronizing connecting rod 606. Based on the above structure, the consistency and synchronicity of the movements of each transmission screw 601 can be ensured, and the stability and reliability of the lifting movement of the lifting seat 4 and the upper roller box 2 can be improved.

The above-mentioned pressure plate 701 is preferably in contact with the top end of the compression spring 7. The compression spring 7 can support the pressure plate 701, thereby balancing the weight of the lifting seat 4 and the upper roller box 2 hung on the transmission screw rod 601, eliminating the need for the transmission screw rod 601. The matching gap with the transmission nut 602. In one embodiment, the compression spring 7 is sleeved on the top of the transmission screw 601. Specifically, as shown in Figures 1 and 2, the pressure plate 701 is movably sleeved on the transmission screw 601 and the upper plate surface The compression spring 7 is in contact with the lower plate surface of the pressure plate 701 and is in contact with the locking nut 702 screwed on the top of the transmission screw rod 601 . Among them, the compression spring 7 and the pressure plate 701 can be fixedly connected, or only have a tight contact relationship; similarly, the compression spring 7 and the frame 1 can be fixedly connected, or can only have a tight contact relationship. Compared with the way that the pressure plate 701 is fixedly installed on the transmission screw 601, the pressure plate 701 is movably set on the transmission screw 601. By adjusting the position of the lock nut 702 on the transmission screw 601, the adjustment pressure can be achieved. The effect of the initial compression amount of spring 7 can correspondingly improve the matching accuracy of the screw drive structure, thereby improving the straightening accuracy of the straightening machine. Further, as shown in Figure 1, the top of the transmission screw 601 is a stepped shaft section that is narrow at the top and wide at the bottom. The pressure plate 701 is sleeved on the small diameter section of the stepped shaft section, so that the step of the stepped shaft section is The adjustment position of the pressure plate 701 can be limited.

When there are multiple sets of screw transmission structures on both the operating side and the transmission side of the frame, preferably, each transmission screw 601 on each side is connected to the same pressure plate 701, and each transmission screw 601 is covered with a sleeve. With the compression spring 7 and each compression spring 7 respectively abutting the pressure plate 701 on the corresponding side, the consistency and synchronization of the movements of each transmission screw 601 can be further improved.

The multi-roller straightening machine provided in this embodiment can better eliminate the matching gap between the transmission screw 601 and the transmission screw mother 602 by installing the compression spring 7 on the transmission screw 601, and improve the lifting seat 4 and the upper roller. The reliability and lifting accuracy of the lifting movement of box 2 are improved, thereby improving the straightening accuracy of the straightening machine.

Further preferably, as shown in Figures 1 and 2, the upper roller box driving device further includes a swing seat 5 and a swing drive mechanism. The swing seat 5 is swingably provided on the lifting base 4. The swing drive mechanism It is installed on the lifting base 4 and connected with the swing base 5 , and the upper roller box 2 is installed on the swing base 5 . The lifting seat 4 can drive the swing seat 5 and the upper roller box 2 to rise and fall, and the swing seat 5 can drive the upper roller box 2 to swing, so that the deviation of the reduction amount at the straightening machine entrance or the straightening machine outlet can be adjusted to achieve better results. straightening effect. It can be understood that the axial direction of the swing axis of the above-mentioned swing seat 5 is parallel to the axial direction of the upper roller in the upper roller box 2 .

In one embodiment, as shown in Figure 2, the above-mentioned swing drive mechanism includes a swing drive unit 801, a swing drive shaft 802 connected to the swing drive unit 801, and an eccentric sleeve 803 installed on the swing drive shaft 802, so The swing seat 5 is provided with a swing bracket, and the eccentric sleeve 803 is in sliding fit with the swing bracket. The swing drive unit 801 can use a gear motor or other rotational driving equipment; the swing drive shaft 802 and the eccentric sleeve 803 can be connected in the form of a key. Preferably, the eccentric sleeve 803 is connected to the swing drive shaft through a hook wedge key 804 802 connection, high stability of the connection structure and reliable force transmission. Optionally, as shown in Figure 3, two swing sliders 805 are provided on the swing bracket. The two swing sliders 805 are arranged oppositely and the sliding mating surfaces are arc-shaped surfaces. The eccentric sleeve 803 slides with the two sliding mating surfaces. Cooperate.

Further preferably, as shown in Figures 1 and 2, the lifting seat 4 is provided with an arc-shaped guide surface, and the swing seat 5 is correspondingly provided with an arc-shaped guide portion, and the arc-shaped guide portion is consistent with the arc-shaped guide surface. The sliding fit of the guide surface can further improve the swing accuracy of the swing seat 5 .

Further preferably, as shown in Figure 2, the lifting base 4 and the swing base 5 are constrained and connected through a tensioning structure. Specifically, the tensioning structure includes a tensioning shaft 501, a disc spring 502 and a constraining nut 503, wherein, in the lifting base 4 is provided with an escape hole, the tensioning shaft 501 is set on the swing seat 5, passes through the escape hole and extends to the lifting seat 4, the restraining nut 503 is screwed on the top of the tensioning shaft 501, and the disc spring 502 is set on the tensioning seat 5. On the tightening shaft 501, the top end of the disc spring 502 is in contact with the restraining nut 503, and the bottom end is in contact with the lifting seat 4; among them, the diameter of the avoidance hole is larger than the diameter of the tensioning shaft 501, and the gap between the two should meet the requirements of the swing seat. 5 swing requirements to avoid interference with the swing of the swing seat 5.

Further preferably, as shown in Figure 2, the above-mentioned straightening machine is also provided with a detection mechanism for detecting the reduction amount. In one embodiment, the detection mechanism includes a magnetostrictive sensor 9, wherein, preferably, the fixed end of the magnetostrictive sensor 9 is installed on the lifting base 4, and the moving end is installed on the swing base 5, so that they can be Measure the depression at the inlet and outlet, and calculate the angle of deflection and the depression.

Embodiment 2

As shown in Figure 4, the embodiment of the present invention provides a high-strength steel plate and strip heat treatment production system, including a preparation unit, a high-temperature heat treatment unit, a low-temperature heat treatment unit and a product collection unit connected in sequence;

The preparation unit includes an uncoiling device 11, a rough straightening device 12 and a first shearing device 13 arranged in sequence;

The product collection unit includes a finishing device 61 and a steel plate stacking section;

The rough straightening device 12 and/or the finishing device 61 adopts the multi-roller straightening machine provided in the first embodiment.

Further, the high-temperature heat treatment unit includes a first heating device 22, a first cooling device 23, a second shearing device 24 and a first stacker 25 connected in sequence; the low-temperature heat treatment unit includes at least one set of low-temperature heat treatment mechanisms. , the low-temperature heat treatment mechanism includes a second heating device 41 and a second cooling device 42 connected in sequence; when there are multiple groups of low-temperature heat treatment mechanisms, each low-temperature heat treatment mechanism is arranged in parallel; wherein, the first shearing device 13 is transported by steel The channel is connected to the first heating device 22, and the first stacker 25 is connected to each of the second heating devices 41 through a steel plate transfer device 30; each of the second cooling devices 42 is connected to the product collection Unit connection.

The above-mentioned uncoiling device 11 is used for uncoiling steel coils, and preferably adopts a dual-channel uncoiling method, which can reduce the downtime for coil change at the entrance section and improve production efficiency.

The above-mentioned rough straightening device 12 can be used to straighten the steel coil and straighten the continuous strip, and can remove most of the oxide scale on the surface of the strip to initially improve the shape and surface quality of the strip.

The above-mentioned first shearing device 13 can be used for cutting the head and tail of the strip, and can realize shearing operations such as cutting the continuous strip to length.

Further, as shown in Figure 4, the above preparation unit also includes a descaling device 14, which is used to further remove iron oxide scale on the surface of the strip or steel plate, including one or more of a shot blasting machine and a brush roller; the descaling device 14 It can be arranged between the rough straightening device 12 and the first shearing device 13 , or it can be arranged on the outlet side of the first shearing device 13 . The shot blasting machine sprays cast steel shots on the surface of the strip at high speed to remove the oxide scale on the surface of the strip, so that the strip has good surface quality before entering the heating furnace. The inlet and outlet of the shot blasting machine are equipped with high-speed air curtains to prevent waste shot materials from overflowing. ; When the shot blasting machine and brush roller are set up at the same time, the brush roller is arranged at the outlet of the shot blasting machine to remove residual steel shot and oxide scale floating dust on the surface of the strip steel.

Further preferably, as shown in Figure 4, the steel conveying channel between the first shearing device 13 and the first heating device 22 is provided with at least one first steel plate on-line station. The first steel plate on-line station The work station is provided with a first steel plate on-line device 15 capable of performing steel plate off-line or steel plate on-line operations on the steel material conveying channel. The steel conveying channel may be a conveying roller, etc.; the first steel plate loading and unloading device 15 may be a steel plate lifting device, such as a vacuum suction cup crane or a high-precision disk crane. Based on this structure, it is possible to realize the on-line and off-line processing of steel plates and realize the functional independence of the preparation unit. When the downstream process fails, the steel plate can be lifted off the line and temporarily stored (for example, into the intermediate warehouse). It can also be used when the upstream process fails. Lift offline steel plates onto the line to ensure non-stop production due to faults and improve system stability.

In one embodiment, as shown in Figure 4, there are two upstream and downstream workstations on the first steel plate and they are arranged on the front and rear sides of the descaling device 14, which can realize the independent function of the phosphorus removal device and realize the phosphorus removal of the off-line steel plate. , Maximize the production capacity and efficiency of the phosphorus removal device.

Preferably, as shown in Figure 4, a deviation correction device 21 is provided at the entrance side of the first heating device 22, which can prevent the strip from deflecting in the first heating device 22. At the same time, the deviation correction device 21 can also establish tension to ensure a continuous strip. The strip can be smoothly passed through during steel production and the shape of the strip in the first heating device 22 can be improved. The correction device 21 is preferably in the form of a pinch correction roller, and the correction accuracy can be controlled within ±1 to 5 mm.

Preferably, the above-mentioned first heating device 22 adopts a heating furnace, such as a non-oxidation roller hearth heating furnace or a fully sealed induction heating furnace with inert atmosphere protection, so as to achieve the purpose of heating the steel and effectively prevent the surface oxidation of the steel. Preferably, the above-mentioned first heating device 22 includes a heating section and a heat preservation section to facilitate the implementation of the steel heat treatment process.

Preferably, the above-mentioned first cooling device 23 is used to cool the heated strip according to a set cooling rate. One or more of aerosol, water mist and water spray methods can be used, and zone cooling technology can be used. The upper and lower water ratio control technology improves the uniformity of cooling of the strip and prevents the strip from generating large internal stress during the cooling process. Furthermore, the roller cooling method with tension can be used to further prevent the strip from forming defects due to internal stress during the cooling process.

Furthermore, the outlet of the above-mentioned first cooling device 23 is equipped with a meter inspection instrument and a plate shape meter, which can conduct online real-time monitoring of the surface quality and plate shape of the cooled strip or steel plate, and feed back the monitoring results to the first cooling device. The cooling device 23 and the first cooling device 23 automatically adjust the cooling parameters in real time according to the feedback information to form a closed-loop control.

Among them, the above-mentioned first cooling device 23 can realize several cooling modes such as slow-speed quenching and cooling of continuous strip steel, slow-speed quenching and cooling of single steel plates, and rapid quenching and cooling of single steel plates.

The above-mentioned second shearing device 24 is mainly used for shearing operations such as cutting continuous strip steel to length. The above-mentioned first stacker 25 can stack the cut-to-length steel plates neatly and then transport them to downstream processes; the first stacker 25 is preferably in the form of a swinging horseshoe roller and is hydraulically driven, which can improve the palletizing rhythm and Accuracy; the entrance of the first stacker 25 can be further equipped with pinch rollers, which can be used to assist in decelerating the steel plate.

In one embodiment, the above-mentioned steel plate transfer device 3 can refer to the relevant equipment in Chinese patent application CN202111265720.7, and the specific structure will not be described again here.

Preferably, the above-mentioned low-temperature heat treatment unit includes multiple sets of low-temperature heat treatment mechanisms, which can improve the flexibility and reliability of system production.

The above-mentioned second heating device 41 adopts a heating furnace, such as a non-oxidation roller hearth heating furnace or a fully sealed induction heating furnace with inert atmosphere protection, to achieve the purpose of heating the steel plate and effectively prevent the surface oxidation of the steel plate. Preferably, the above-mentioned second heating device 41 includes a heating section and a heat preservation section to facilitate the implementation of the steel plate heat treatment process.

Preferably, the above-mentioned second cooling device 42 is used to cool the heated steel plate, wherein: the high temperature section 400-700°C preferably adopts protective gas circulating jet cooling (RJC) technology, and the steel plate is cooled at 20-60°C/s. The cooling rate is rapid cooling to avoid the occurrence of temper brittleness and prevent the oxidation of the steel plate; in the low temperature section below 400°C, air jet cooling (AJC) technology is used to air-cool the steel plate to room temperature, reduce the internal stress of tempering, and obtain stable tempering. Fire organization.

In one embodiment, as shown in Figure 4, each second heating device 41 is equipped with a feed roller, and the steel plate transfer device 3 is connected to each of the feed rollers; There is a second steel plate loading and unloading station, and the second steel plate loading and unloading station is provided with a second steel plate loading and unloading device 43 capable of performing steel plate offline or steel plate online operations on the feed roller. The above-mentioned feeding roller can be a conveying roller, etc.; the above-mentioned second steel plate loading and unloading device 43 can be a steel plate lifting device, such as a vacuum suction cup crane or a high-precision disk crane. Based on this structure, the on-line and off-line processing of steel plates can be realized, making the low-temperature heat treatment unit functionally independent, improving production flexibility and reliability, and at the same time improving unit equipment utilization. Furthermore, the connection between the steel plate transfer device 3 and the feed roller can be realized through the above-mentioned steel plate lifting device, thereby improving the equipment utilization rate of the steel plate lifting device.

As shown in Figures 4 and 5, each of the second cooling devices 42 is connected to the inlet of the finishing device 61, and the outlet of the finishing device 61 is connected to the steel plate stacking section. In addition, preferably, the outlet of the finishing device 61 is equipped with a meter inspection instrument and a plate shape meter for online real-time monitoring of the surface quality and plate shape of the straightened steel plate, and the monitoring results are fed back to the finishing device 61, The finishing device 61 automatically adjusts the straightening parameters in real time based on the feedback information to form a closed-loop control.

For multiple sets of low-temperature heat treatment mechanisms connected in parallel, each low-temperature heat treatment mechanism can share a set of finishing devices 61, and the steel plates output by each second cooling device 42 can be transported to the finishing device 61.

Further, as shown in Figure 4, each second cooling device 42 is also connected to the steel plate stacking section through a bypass roller. The two ends of the bypass roller are respectively located at the entrance of the finishing device 61. Material side and discharging side; based on this design, the production flexibility of the system can be improved. For steel plates that do not need finishing treatment, they can directly enter the steel plate stacking section.

Further, as shown in Figures 4 and 5, the steel plate conveying roller on the feed side of the finishing device 61 is provided with a steel plate online station and is equipped with a steel plate online device 5. The steel plate on-line device 5 can adopt a steel plate lifting device in the form of a vacuum suction cup crane or a high-precision disk crane, which can lift off-line steel plates onto the line, realizing functional independence of the finishing unit, improving production flexibility, and maximizing production efficiency. Make full use of the productivity and efficiency of finishing equipment.

In one embodiment, as shown in Figures 4 and 5, the above-mentioned steel plate stacking section can include multiple sets of second stackers 63, and the steel plates output by the finishing device 61 can enter one of the sets of second stackers 63; In the above solution where the second cooling device 42 is equipped with a bypass roller, the number of the second stackers 63 can be the same as the number of low-temperature heat treatment mechanisms and configured in one-to-one correspondence. Each group of the second cooling device 42 can pass through The corresponding bypass roller conveyor is connected with the corresponding second stacker 63 . The above-mentioned second stacker 63 is preferably in the form of a swinging horseshoe roller and is hydraulically driven, which can improve the palletizing rhythm and accuracy; the entrance of the second stacker 63 can be further equipped with a pinch roller, which can be used to assist in decelerating the steel plate.

Further, a third shearing device 62 is also provided on the entrance side of the second stacker 63, which is mainly used for shearing operations such as cutting steel plates to length to meet the user's needs for steel plates of different lengths, and can also be used for Steel plate online sampling.

Embodiment 3

The embodiment of the present invention provides a strip cutting method on a strip continuous production line, which can be used to complete the corresponding shearing operations in the second embodiment, such as the first shearing device, the second shearing device and the third shearing device. At least one of them adopts the strip cutting method.

The strip cutting method includes the following steps:

Arrange the cutting head 1031 above the strip running channel;

Design the running path of the cutting head so that the cutting head 1031 keeps following the strip in the length direction of the strip and performs lateral cutting motion relative to the strip in the width direction of the strip;

When the strip moves to the set position, the cutting head 1031 moves according to the designed cutting head running path to cut the strip.

Among them, the thermal cutting method or the water cutting method can be used. The thermal cutting method is preferably the laser cutting method. Accordingly, the cutting head 1031 is a laser cutting head; for the water cutting method, the cutting head 1031 is correspondingly a water cutting head. /waterjet.

Obviously, the above-mentioned cutting head 1031 needs to be able to move. Correspondingly, the cutting head 1031 is configured with a cutting head driving mechanism. The cutting head driving mechanism has a third element that drives the cutting head 1031 to move in the length direction of the strip running channel. A driving stroke and a second driving stroke driving the cutting head 1031 to move in the width direction of the strip running channel. In one embodiment, as shown in Figure 6, a gantry cutting machine is used, which specifically includes:

Machine tool host part: including the gantry 1033 and the movable seat. The gantry 1033 can slide along the length of the strip running channel to realize the movement of the cutting head 1031 in the X direction. The movable seat can move laterally on the gantry 1033 to realize the cutting head 1031 In the Y-direction movement, the movable seat can further be set to move up and down relative to the gantry 1033 to realize the movement of the cutting head 1031 in the Z-direction, which can assist focusing and improve the focusing efficiency and focusing accuracy of the cutting head 1031. The drive of the gantry 1033 and the movable seat are preferably driven by servo motors, which can be driven correctly and accurately according to the control program; the laser 1032 is installed on the above-mentioned movable seat, and the laser emitted by the laser 1032 is emitted from the cutting head 1031 to the strip. Surface to realize strip cutting operation;

CNC system: controls the machine tool host to realize the X-, Y-, and Z-direction movements of the cutting head 1031, and also controls the output power of the laser 1032.

Furthermore, the above-mentioned cutting machine also includes an exhaust and dust removal mechanism to extract smoke and dust generated during processing and perform dust removal treatment so that the exhaust gas emissions meet environmental protection requirements.

Furthermore, there is a waste collection unit under the strip conveying channel. The waste collection unit can be equipped with a slag discharge equipment to facilitate the timely discharge of the collected waste.

As shown in Figure 8, since the cutting head 1031 has both movement in the length direction of the strip and movement in the width direction of the strip, the running path of the cutting head is an oblique running path with an angle relative to the length direction of the strip.

Among them, the factors considered in the design of the above-mentioned cutting head running path mainly include strip steel specifications, strip running speed and cutting time. The starting running position of the cutting head 1031 can be determined by the strip steel specifications, and the strip running speed mainly determines the cutting speed. The X-direction moving speed of the head 1031, the cutting time requirement combined with the strip steel specification can determine the Y-direction moving speed of the cutting head 1031. For different working conditions, the cutting head running paths will be different, but all cutting head running paths will be within the two boundary running paths of the cutting head 1031 (as shown in Figure 8).

It can be understood that "keeping the cutting head 1031 following the strip in the length direction of the strip" means that the X-direction moving speed of the cutting head 1031 needs to be consistent with the running speed of the strip. The strip running speed is controlled by the strip conveying device 101, so the cutting head driving mechanism and the strip conveying device 101 can be interlocked and controlled to ensure the above following requirements and avoid strip scrap.

Based on the above method, this embodiment can realize the online continuous cutting operation of strip steel on the strip steel continuous production line without stopping or flying shearing, ensuring the reliability and smoothness of strip steel production, and is especially suitable for the online continuous cutting operation of high-strength steel plates. .

Further optimize the above method, as shown in Figure 8, according to the cutting head operating range limited by the cutting head operating path under different working conditions, the strip running channel is divided into a cutting area 10101 and a non-cutting area 10102. For the strip in the cutting area 10101 Steel conveyor 101 is designed for protection. Based on this design, the strip conveying device 101 can be better protected, and the matching design of the strip conveying device 101 in the cutting area 10101 and the non-cutting area 10102 can effectively reduce equipment costs and maintenance costs.

In one embodiment, in the cutting area 10101, the conveying surface of the strip conveying device 101 that is suitable for contact with the strip is made of a material that is resistant to laser irradiation, for example, the conveying surface is plated with copper or otherwise formed to be resistant to laser irradiation. material layer. The above structure can better protect the strip conveying device 101, prevent the laser from passing through the strip and ablating the strip conveying device 101, and prevent surface defects of the strip conveying device 101 from affecting the surface quality of the strip.

In one embodiment, as shown in Figures 7 and 8, in the cutting area 10101, the strip conveying device 101 includes a plurality of conveying units arranged sequentially along the length direction of the strip running channel. Each conveying unit includes a drive roller installed on At least one first conveying roller 1012 on the transmission roller 1011; when multiple first conveying rollers 1012 are installed on the transmission roller 1011, each first transmission roller 1012 is arranged at intervals on the transmission roller 1011.

Arranging the first conveying rollers 1012 at intervals can reduce the number of strip conveying equipment that may appear within the influence range of the cutting medium (such as the laser irradiation range), thereby correspondingly reducing the number of strip conveying devices 101 during the strip cutting process. damage. In addition, the first conveying roller 1012 is used as the conveying equipment. On the premise of ensuring reliable conveying requirements for strip steel, the replacement of the first conveying roller 1012 is also very convenient. The new first conveying roller 1012 will be standardized and produced. Just replace the defective first conveying roller 1012, which avoids the need to replace the entire conveying roller in traditional roller conveying equipment, which can reduce maintenance costs; accordingly, the first conveying roller 1012 is removably and fixedly installed on the transmission roller. On axis 1011.

In the above solution of "the transmission surface is made of materials resistant to laser irradiation", correspondingly, the outer edge surface of the first conveying roller 1012 only needs to be made of materials resistant to laser irradiation, which can also significantly reduce the cost. The required consumption of laser radiation resistant materials.

In one embodiment, as shown in Figures 7 and 8, in the above-mentioned first conveying roller 1012, the cross-section of the rim ring used to contact the strip is spindle-shaped, that is, the rim ring extends from the inner ring to the steel strip. The direction of the outer ring has a tapered structure. Based on this structure, the contact range between the first conveying roller 1012 and the strip can be further reduced, that is, the area of the above-mentioned conveying surface can be reduced, thereby reducing the impact of the cutting medium on the strip conveying equipment. of damage.

The above-mentioned first conveying roller 1012 may further include a core ring, which is sleeved on the transmission roller shaft 1011, and the above-mentioned rim ring is sleeved on the core ring; wherein, the rim ring and the core ring are preferably detachably connected. , for example, the two are connected through an adapter plate. The adapter plate and the rim ring can be connected through bolts, etc. The adapter plate can be welded and fixed on the core ring, or can be fixed on the core ring through bolts. Based on the above structure, the maintenance of the first conveying roller 1012 can be facilitated, that is, only the rim ring needs to be replaced, which can effectively reduce maintenance costs.

Further, as shown in Figure 7, in the cutting area 10101, a protective tube 1015 is set on the exposed transmission roller 1011 (that is, the roller shaft section that is not covered with the first conveying roller 1012) to prevent the medium from being cut during the cutting process. The transmission roller 1011 is damaged, further reducing maintenance costs.

Further preferably, as shown in Figures 7 and 8, a plurality of second conveying rollers 1013 are installed on the shaft section of the transmission roller shaft 1011 extending to the non-cutting area 10102. The outer peripheral surface of the second conveying roller 1013 is preferably a cylindrical ring surface, which has a relatively large contact area with the strip steel, ensuring reliable conveyance of the strip steel, and at the same time improving the force uniformity of each shaft section of the transmission roller shaft 1011 , to avoid defects such as torsional deformation of the transmission roller 1011.

Among them, the conveying rollers on the transmission roller 1011 are arranged at equal intervals to prevent the strip from deflecting.

It can be understood that the axis of the above-mentioned driving roller 1011 is parallel to the width direction of the strip running channel, and the first conveying roller 1012 and the second conveying roller 1013 are preferably coaxially installed on the driving roller 1011. The above-mentioned transmission roller 1011 is connected with a conveying driving mechanism 1014 that drives it to rotate around its own axis. The conveying driving mechanism 1014 can be a gear motor or a motor, preferably a servo motor or a servo motor.

Preferably, the strip conveying device 101 before and after the cutting station also adopts a structure in which the transmission rollers 1011 are equipped with multiple conveying rollers. In the length direction of the strip running channel, the transmission rollers 1011 are preferably arranged in sequence at equal intervals. Further, as shown in Figure 8, each set of conveying driving mechanisms 1014 is arranged on both sides of the strip conveying channel. It is further preferred that there is a transmission roller 1011 between two adjacent sets of conveying driving mechanisms 1014 on the same side; based on this design , which can effectively prevent strip deviation.

In one embodiment, when cutting the strip, pressure is applied to the strip on both sides of the cutting slit to prevent the cut strip from rebounding upward, thereby better protecting the cutting equipment. The strip pressing mechanism 102 can be configured accordingly. In order to cooperate with the operation of the strip and the operation of the cutting head 1031, the pressing part of the strip pressing mechanism 102 should be able to keep following the strip.

In one embodiment, the above-mentioned strip pressing mechanism 102 is configured with an X-direction drive structure, such as a pressing frame 1021 with a traveling mechanism and equipped with a traveling drive structure (such as a motor). The pressing frame 1021 can be combined with a gantry type The gantry 1033 of the cutting machine shares the X-guide rail, or it can be equipped with an X-guide rail separately; accordingly, the strip pressing mechanism 102 needs to be provided on the front and rear sides of the cutting machine. In another embodiment, the strip pressing mechanism 102 is integrated with the cutting machine. For example, the above-mentioned pressing frame 1021 is installed on the gantry frame 1033 of the gantry cutting machine. Since it is necessary to press the strip steel on both sides of the cutting slit separately. Tight, therefore, mounting brackets can be provided on the front and rear sides of the gantry 1033 to install the compression frame 1021.

Preferably, as shown in Figures 7 and 9, the above-mentioned strip pressing mechanism 102 includes a pressure beam 1022 and a pressure driving structure 1023 for driving the pressure beam 1022 to rise and fall. The pressure driving structure 1023 can drive the pressure beam 1022 in the working position. and the standby position. In the working position, the pressure beam 1022 is pressed against the surface of the strip, and the standby position is located above the working position. The pressure beam 1022 can be a pressure plate whose surface is parallel to the horizontal plane. Of course, pressure rollers and the like are also suitable for use in this embodiment. The above-mentioned pressing drive structure 1023 may adopt linear drive equipment such as cylinders and hydraulic cylinders, or may adopt driving methods such as motor + transmission components. The above-mentioned pressing down driving structure 1023 is installed on the pressing frame 1021 and connected with the pressing beam 1022.

Preferably, as shown in Figure 9, a guide structure is provided on the compression frame 1021 to guide the lifting movement of the pressure beam 1022 and improve the stability and reliability of the lifting movement of the pressure beam 1022; the guide structure can use a guide rod 10241 -The guiding method of the guide sleeve 10242 can also be the guiding method of the guide slide rail-guide slide block, and I will not give an example here. In this embodiment, as shown in Figure 9, multiple guide rods 10241 are installed on the pressure beam 1022, and multiple guide holes are correspondingly provided on the compression frame 1021; further, guide sleeves 10242 can be installed in the guide holes. Preferably, at least Some guide sleeves 10242 use self-lubricating sleeves.

Among them, an upper limit block can be set on the guide rod 10241 to limit the downward stroke of the guide rod 10241, thereby limiting the downward stroke of the pressure beam 1022 and preventing the pressure beam 1022 from being separated from the compression frame 1021; an upper limit block can also be provided on the guide rod 10241 A lower limit block is provided on the top to limit the upward stroke of the guide rod 10241 and the pressure beam 1022.

Further, as shown in Figure 9, the above-mentioned strip pressing mechanism 102 also includes a buffer structure. The buffer structure is arranged between the pressure beam 1022 and the pressing frame 1021. On the one hand, it can improve the pressure adaptability when applying pressure to the strip. On the other hand, it can effectively buffer the rebound force of the strip steel and reduce the impact on the pressing drive structure 1023 and so on. In one embodiment, as shown in Figure 9, the buffer structure includes multiple sets of buffer springs 1025. The top end of the buffer springs 1025 is in contact with the compression frame 1021, and the bottom end is in contact with the pressure beam 1022; a guide rod 10241 is provided above. In the solution, the buffer spring 1025 can be sleeved on the guide rod 10241, and the buffer spring 1025 can be restricted to only perform vertical expansion and contraction activities. Further, a plurality of sinking grooves are provided at the bottom of the compression frame 1021. The number of sinking grooves and the buffer springs 1025 are the same and arranged in one-to-one correspondence. The top ends of the buffer springs 1025 are accommodated in the corresponding sinking grooves, which can improve the strength of the buffer spring 1025. The stability and reliability of the vertical telescopic movement; in the solution of providing multiple guide holes on the compression frame 1021, the guide holes can correspondingly adopt a stepped hole that is narrow at the top and wide at the bottom. The large-diameter hole section of the stepped hole is It is constituted as the sinking tank mentioned above.

In one of the embodiments, as shown in Figure 10, a guide plate 1026 is also provided on the compression frame 1021. The guide plate 1026 is installed at the front end (that is, the steel side end) of the compression frame 1021. The guide plate 1026 The bottom end of is preferably no higher than the horizontal plane where the pressure beam standby position is located. The bottom surface of the guide plate 1026 is preferably an inclined guide surface, which is inclined downward from the front end to the rear end of the guide plate 1026 (that is, the front end of the guide surface is located above the rear end). When the belt head passes, the guide plate 1026 can prevent the belt head from being tilted too much and damaging the pressure plate, and can assist in belt threading and improve production efficiency. When the pressing frame 1021 is provided at the front and rear of the cutting machine, it is preferable that the guide plate 1026 is provided only for the pressing frame 1021 on the front side of the cutting machine.

In one embodiment, the above-mentioned pressure beam 1022 is a beam made of electromagnets, or an electromagnet is provided on the pressure beam 1022. The control power supply of the electromagnet can be installed on the compression frame 1021, or can be controlled by the pressure beam 1021. The tight frame 1021 is wired to connect to an external power source. Based on the above structure, when the pressure beam 1022 is pressed, the electromagnet is energized, which can cause the pressure beam 1022 to be adsorbed and pressed against the surface of the strip, significantly improving the compression effect of the strip and the operation synchronization.

Correspondingly, an embodiment of the present invention also provides a strip cutting device, which can be used in the above-mentioned second embodiment, for example, as the first shearing device/second shearing device/third shearing device in the second embodiment.

The strip cutting device includes:

A cutting head 1031 is arranged above the strip running channel. The cutting head 1031 is configured with a cutting head driving mechanism. The cutting head driving mechanism has a first drive that drives the cutting head 1031 to move in the length direction of the strip running channel. stroke and a second driving stroke that drives the cutting head 1031 to move in the width direction of the strip running channel;

Controller, the controller is used to receive cutting instructions and control the cutting head driving mechanism to work when the strip moves to the set position so that the cutting head 1031 moves according to the preset cutting head running path and cuts the strip. To perform cutting, the cutting head running path is such that the cutting head 1031 keeps following the strip in the length direction of the strip and makes a traversing cutting motion relative to the strip in the width direction of the strip.

Among them, the above-mentioned controller can be integrated into the central control room of the production line.

The above-mentioned cutting head 1031 is preferably a laser cutting head.

The relevant composition and structure of the above-mentioned strip cutting device can be found in the above-mentioned relevant contents and will not be described in detail here.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (9)

1. A multi-roller straightening machine includes a frame, an upper roller box and an upper roller box driving device. The upper roller box driving device includes a lifting seat, a lifting driving structure and a screw drive structure. The upper roller box is installed on the On the lifting base, the screw transmission structure includes a matching transmission screw and a transmission nut. The lifting base is fixedly connected to the transmission screw, and the transmission nut is fixedly installed on the frame. The lifting drive structure is installed on the frame and is drivingly connected to the transmission screw. It is characterized in that: the transmission screw is equipped with a compression spring, and one end of the compression spring is in contact with the frame. The other end is in contact with the pressure plate connected to the transmission screw rod.
2. The multi-roller straightening machine according to claim 1, characterized in that: multiple sets of screw transmission structures are provided on both the operating side and the transmission side of the frame, and each transmission screw on each side is connected to the same piece. The pressure plates are connected, and each of the transmission screw rods is equipped with a compression spring, and each of the compression springs is in contact with the pressure plate on the corresponding side.
3. The multi-roller straightening machine according to claim 1 or 2, characterized in that: the pressure plate is movably sleeved on the transmission screw rod, and the upper plate surface is connected to a locking nut screwed on the top of the transmission screw rod. The compression spring is in contact with the lower plate surface of the pressure plate.
4. The multi-roller straightening machine according to claim 3, characterized in that: the top of the transmission screw is a stepped shaft section that is narrow at the top and wide at the bottom, and the pressure plate is sleeved on the small diameter section of the stepped shaft section. .
5. The multi-roller straightening machine according to claim 1, characterized in that: the upper roller box driving device further includes a swing seat and a swing drive mechanism, the swing seat is swingably arranged on the lifting seat, and the The swing driving mechanism is installed on the lifting base and connected with the swing base, and the upper roller box is installed on the swing base.
6. The multi-roller straightening machine according to claim 5, wherein the swing drive mechanism includes a swing drive unit, a swing drive shaft connected to the swing drive unit, and an eccentric sleeve installed on the swing drive shaft. , the swing seat is provided with a swing bracket, and the eccentric sleeve is slidably matched with the swing bracket.
7. The multi-roller straightening machine according to claim 6, wherein the eccentric sleeve is connected to the swing transmission shaft through a hook wedge key.
8. The multi-roller straightening machine according to claim 5, characterized in that: the lifting seat is provided with an arc-shaped guide surface, the swing seat is correspondingly provided with an arc-shaped guide portion, and the arc-shaped guide portion and The arc-shaped guide surface is in sliding fit.
9. A high-strength steel plate and strip heat treatment production system, characterized by including a preparation unit, a high-temperature heat treatment unit, a low-temperature heat treatment unit and a product collection unit connected in sequence;

   The preparation unit includes an uncoiling device, a rough straightening device and a first shearing device arranged in sequence;

   The product collection unit includes a finishing device and a steel plate stacking section;

   The rough straightening device and/or the finishing device adopts the multi-roller straightening machine according to any one of claims 1 to 8.

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