A tension straightening machine for straightening metal strips

Abstract

The present invention relates to a straightening machine for straightening metal strips, comprising an upper steering roller at an entrance, a lower steering roller at an entrance, a bending roller system, an upper steering roller in a segment, a transverse bending straightening roller system, a longitudinal bending straightening roller system and a lower steering roller at an exit arranged in sequence along the running direction of the strip; the bending roller system comprises a plurality of groups of upper bending rollers and a plurality of groups of lower bending rollers, the number of the upper bending rollers and the lower bending rollers being the same and being arranged one-to-one; the transverse bending straightening roller system comprises an upper straightening roller and a plurality of transverse bending steering rollers located below the running channel of the strip; the longitudinal bending straightening roller system comprises a lower straightening roller and a plurality of longitudinal bending steering rollers located above the running channel of the strip. The present invention arranges the bending roller system, the transverse bending straightening roller system and the longitudinal bending straightening roller system, and specifically arranges steering rollers at the entrance side, the segment and the exit side respectively, so that the strip passes through the straightening machine according to a specific path, which can effectively improve the straightening effect of the strip and reduce surface quality problems such as scratches and color difference of the strip.

Description

Technical Field

[0001] The invention belongs to the technical field of metallurgical equipment, and in particular relates to a tension straightening machine for straightening metal plates and strips. Background Art

[0002] At present, straightening machines are widely used in the continuous production and processing lines of strips in the metallurgical industry. As the market's requirements for strip shape and surface quality become higher and higher, conventionally designed straightening machines often fail to achieve good straightening effects or cause surface quality problems such as scratches and color differences to the strips due to unreasonable roller arrangement. When the strip weld passes through, the upper and lower rollers cannot be quickly separated from the strip at the same time, resulting in roller marks and a decrease in the strip yield rate. Summary of the invention

[0003] The invention relates to a tensioning and straightening machine for straightening metal strips, which can at least solve some defects of the prior art.

[0004] The present invention relates to a straightening machine for straightening metal plates and strips, comprising an upper steering roller at an entrance, a lower steering roller at an entrance, a bending roller system, an upper steering roller within a segment, a transverse bending straightening roller system, a longitudinal bending straightening roller system and a lower steering roller at an exit, which are sequentially arranged along the running direction of the strip; the bending roller system comprises a plurality of groups of upper bending rollers and a plurality of groups of lower bending rollers, the number of upper bending rollers and lower bending rollers being the same and being arranged in a one-to-one correspondence; the transverse bending straightening roller system comprises an upper straightening roller and a plurality of transverse bending steering rollers located below a strip running channel; the longitudinal bending straightening roller system comprises a lower straightening roller and a plurality of longitudinal bending steering rollers located above the strip running channel.

[0005] As one of the embodiments, each of the upper bending roller, the upper straightening roller and the lower straightening roller is provided with a pressing amount adjustment mechanism;

[0006] Each of the lower bending rollers, each of the transverse bending and steering rollers, and each of the longitudinal bending and steering rollers is equipped with a roller system quick opening mechanism.

[0007] As one of the implementation modes, the inlet upper steering roller, the inlet lower steering roller and the outlet lower steering roller are all equipped with a roller system quick opening mechanism; the in-segment upper steering roller is a fixed position roller system.

[0008] As one of the implementation modes, the lower bottom elevation of the inlet upper steering roller after being pressed down and the upper top elevation of the outlet lower steering roller after being pressed up are the same as the elevation of the strip passing line; the lower bottom elevation of the upper steering roller in the section is higher than the elevation of the strip passing line; the upper top elevation of the inlet lower steering roller after being pressed up is higher than the elevation of the strip passing line.

[0009] As one of the implementation modes, the lower bottom elevation of the upper steering roller in the segment is 5 to 20 mm higher than the elevation of the strip passing line.

[0010] As one of the implementation modes, the upper top elevation of the lower steering roller at the entrance after being pressed is 20 to 80 mm higher than the elevation of the strip passing line.

[0011] As one of the embodiments, after each of the roller system quick opening mechanisms quickly opens the roller system, the strip does not contact any roller equipment of the tensioning and straightening machine.

[0012] As one of the implementation modes, except for the upper steering roller in the segment, the remaining roller equipment all adopts an integral roller box structure.

[0013] As one of the implementation modes, each of the upper bending rollers, each of the lower bending rollers, the upper straightening roller, and the lower straightening roller are all triple roller system structures.

[0014] As one of the implementation modes, a squeeze roller is further arranged downstream of the lower outlet turning roller.

[0015] The present invention has at least the following beneficial effects:

[0016] The straightening machine provided by the present invention arranges a bending roller system, a transverse bending straightening roller system and a longitudinal bending straightening roller system, and specifically arranges steering rollers at the inlet side, in the section and at the outlet side, respectively, so that the strip passes through the straightening machine along a specific path, realizes the bending and straightening of the strip, and can effectively improve the straightening effect of the strip. At the same time, since the roller diameter of the longitudinal bending roller is larger than the roller diameter of the transverse bending roller, arranging the heavier longitudinal bending roller below the strip instead of hanging it above will reduce the generation of scratches or color difference. In contrast, if the component force of the tension of the thin plate strip hanging above the strip is not enough to press the longitudinal bending roller and the intermediate roller against the support roller, the strip and the longitudinal bending roller are sometimes in contact and sometimes not in contact, which is easy to cause scratches or color difference in the strip.

[0017] The present invention further has the following effects:

[0018] In the present invention, by arranging each roller system and setting up a roller system quick-opening mechanism, it can be ensured that each roller system is quickly separated from the strip when the strip weld passes through, and the elevation of the strip passing line will not be changed in the quick-opening state of the straightening machine, thereby avoiding adverse effects on subsequent normal production or the need to repeatedly adjust the strip passing line. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only 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.

[0020] Figure 1 A schematic diagram of the arrangement of a tension and straightening machine provided in an embodiment of the present invention;

[0021] Figure 2 A schematic diagram of a tension and straightening machine in a fast-opening state provided by an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the arrangement of a tension and leveling machine including a squeeze roller provided in an embodiment of the present invention;

[0023] Figure 4 A schematic structural diagram of a roller device with a pressure reduction adjustment mechanism provided in an embodiment of the present invention;

[0024] Figure 5 for Figure 4 Schematic diagram of the state of the middle roller device when it is working normally;

[0025] Figure 6 for Figure 4 Schematic diagram of the status of the middle roll device when changing rolls. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only 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.

[0027] Embodiment 1

[0028] like Figure 1-Figure 3 An embodiment of the present invention provides a straightening machine for straightening metal plates and strips, comprising an upper steering roller 1 at an entrance, a lower steering roller 2 at an entrance, a bending roller system 3, an upper steering roller 4 within a segment, a transverse bending straightening roller system 5, a longitudinal bending straightening roller system 6 and a lower steering roller 7 at an exit, which are arranged in sequence along the running direction of the strip; the bending roller system 3 comprises a plurality of groups of upper bending rollers 31 and a plurality of groups of lower bending rollers 32, and the number of the upper bending rollers 31 and the number of the lower bending rollers 32 are the same and are configured one by one; the transverse bending straightening roller system 5 comprises an upper straightening roller 51 and a plurality of transverse bending steering rollers 52 located below the strip running channel; the longitudinal bending straightening roller system 6 comprises a lower straightening roller 61 and a plurality of longitudinal bending steering rollers 62 located above the strip running channel.

[0029] In normal production, a strip running channel is defined by the inlet upper steering roller 1, the inlet lower steering roller 2, the bending roller system 3, the segment upper steering roller 4, the transverse bending straightening roller system 5, the longitudinal bending straightening roller system 6 and the outlet lower steering roller 7. It can be understood that the inlet upper steering roller 1, the upper bending roller 31, the upper straightening roller 51 and the longitudinal bending steering roller 62 are all located above the strip running channel; the inlet lower steering roller 2, the outlet lower steering roller 7, the lower bending roller 32, the lower straightening roller 61 and the transverse bending steering roller 52 are all located below the strip running channel.

[0030] In one embodiment, the bending roller system 3 includes two groups of upper bending rollers 31 and two groups of lower bending rollers 32. The straightening machine forms a two-bending and two-straightening straightening process, which can meet the straightening processing requirements of various strips.

[0031] The above-mentioned transverse bending straightening roller system 5 is used to correct the transverse bending defect of the strip. In one embodiment, as Figure 1-Figure 3 There are two transverse bending and steering rollers 52 , the axes of the two transverse bending and steering rollers 52 are parallel and arranged horizontally side by side, and the upper straightening roller 51 is preferably located between the two transverse bending and steering rollers 52 .

[0032] The longitudinal bending straightening roller system 6 is used to correct the longitudinal bending defects of the strip. In one embodiment, Figure 1-Figure 3 There are two longitudinal bending steering rollers 62 , the axes of the two longitudinal bending steering rollers 62 are parallel and arranged horizontally side by side, and the lower straightening roller 61 is preferably located between the two longitudinal bending steering rollers 62 .

[0033] Preferably, the inlet upper steering roller 1, the inlet lower steering roller 2, the upper bending rollers 31, the lower bending rollers 32, the upper straightening roller 51, the transverse bending steering rollers 52, the lower straightening roller 61, the longitudinal bending steering rollers 62 and the outlet lower steering roller 7 are all integral roller box structures, which can be pulled out laterally for easy installation and maintenance; that is, except for the upper steering roller 4 in the section, the remaining roller equipment all adopt an integral roller box structure.

[0034] Preferably, each of the upper bending rolls 31 , each of the lower bending rolls 32 , the upper straightening roll 51 and the lower straightening roll 61 are of a triple roll system structure, including a working roll, two intermediate rolls and a plurality of support rolls.

[0035] The tensioning and straightening machine provided in this embodiment arranges a bending roller system 3, a transverse bending straightening roller system 5 and a longitudinal bending straightening roller system 6, and specifically arranges steering rollers on the inlet side, in the section and on the outlet side, respectively, so that the strip passes through the tensioning and straightening machine along a specific path, thereby achieving bending and straightening of the strip, which can effectively improve the straightening effect of the strip and reduce surface quality problems such as scratches and color difference of the strip.

[0036] In one embodiment, each of the upper bending roller 31, the upper straightening roller 51 and the lower straightening roller 61 is provided with a depression adjustment mechanism, which may adopt a conventional depression adjustment structure in the art and will not be described in detail herein.

[0037] In one embodiment, each of the lower bending rollers 32, each of the transverse bending steering rollers 52 and each of the longitudinal bending steering rollers 62 is equipped with a roller system quick opening mechanism, which can be directly driven by a cylinder / hydraulic cylinder, etc., and has a fast response speed.

[0038] In one embodiment, the inlet upper steering roller 1, the inlet lower steering roller 2 and the outlet lower steering roller 7 are all equipped with a roller system quick opening mechanism; the in-segment upper steering roller 4 is a fixed position roller system. Similarly, the roller system quick opening mechanism can be directly driven by a cylinder / hydraulic cylinder, etc., with a fast response speed.

[0039] Among them, Figure 2 When the upper steering roller 1 at the entrance, the lower steering roller 2 at the entrance, the lower bending rollers 32, the transverse bending steering rollers 52, the longitudinal bending steering rollers 62 and the lower steering roller 7 at the exit are quickly opened, the strip does not contact any roller equipment of the straightening machine. When the strip weld passes through, the roller systems can be quickly separated from the strip, avoiding roller marks on the strip surface and a decrease in the strip yield rate.

[0040] Among them, preferably, the lower bottom elevation of the inlet upper steering roller 1 after being pressed down and the upper top elevation of the outlet lower steering roller 7 after being pressed up are the same as the elevation of the strip passing line; the lower bottom elevation of the upper steering roller 4 in the section is higher than the elevation of the strip passing line; the upper top elevation of the inlet lower steering roller 2 after being pressed up is higher than the elevation of the strip passing line. Based on this setting, the straightening effect of the strip can be improved; combined with the setting of the above-mentioned roller system quick opening mechanism, it can ensure that each roller system and the strip are quickly separated when the strip weld passes, and the elevation of the strip passing line will not be changed in the quick opening state of the straightening machine, avoiding the adverse effect of adjusting the strip passing line on the interference of the steel wire of the front and rear equipment.

[0041] It should be noted that the elevation of the strip passing line is based on the strip elevation at the inlet / outlet side of the tension and leveling machine.

[0042] Furthermore, the lower bottom elevation of the upper steering roller 4 in the segment is 5 to 20 mm higher than the elevation of the strip passing line; in one embodiment, the lower bottom elevation of the upper steering roller 4 in the segment is 10 to 12 mm higher than the elevation of the strip passing line.

[0043] Furthermore, the upper top elevation of the lower entrance steering roller 2 after being pressed is 20 to 80 mm higher than the elevation of the strip passing line; in one embodiment, the upper top elevation of the lower entrance steering roller 2 after being pressed is 50 to 60 mm higher than the elevation of the strip passing line.

[0044] In an optional embodiment, if Figure 3 A squeezing roller 8 is also arranged downstream of the lower deflection roller 7 at the outlet.

[0045] Embodiment 2

[0046] This embodiment provides a roller device. In the above-mentioned embodiment 1, at least one of the upper bending roller, the upper straightening roller and the lower straightening roller can adopt the roller device.

[0047] like Figure 4-Figure 6 The roller device includes a roller box 101 and a depression amount adjustment mechanism, through which the depression amount of the roller box 101 can be adjusted to improve the working flexibility and reliability of the roller device.

[0048] In this embodiment, preferably, the above-mentioned depression amount adjustment mechanism adopts a spiral elevator 104. Specifically, the depression amount adjustment mechanism includes a spiral elevator 104 and a lifting frame 106. The lifting frame 106 is connected to the lifting rod 1041 of the spiral elevator 104. The roller box 101 is installed on the lifting frame 106. Under the action of the spiral elevator 104, the lifting frame 106 can be driven to rise and fall, thereby driving the roller box 101 to rise and fall, thereby achieving the purpose of adjusting the depression amount.

[0049] Among them, preferably, the depression amount adjustment mechanism can use multiple groups of screw elevators 104, each screw elevator 104 is connected through a coupling 103, and then connected to the same driving unit 102. The driving unit 102 can use an electric motor, a gear motor, etc.

[0050] In one embodiment, if Figure 5 and Figure 6 A roller changing track 1061 is provided in the lifting frame 106, and a traveling mechanism 1011 is correspondingly provided on the roller box 101. The traveling mechanism 1011 may be a roller, etc., which is placed on the roller changing track 1061 and can travel on the roller changing track 1061. The guide direction of the roller changing track 1061 is generally parallel to the axial direction of the working roller in the roller box 101.

[0051] More preferably, if Figure 5 and Figure 6 The lifting rod 1041 of the spiral lift 104 passes through the lifting frame 106 and the bottom end extends into the lifting frame 106 and abuts against the roller box 101; the bottom end of the lifting rod 1041 adopts a stepped shaft structure that is narrow at the top and wide at the bottom, and a disc spring 107 is also mounted on the lifting rod 1041. The bottom end of the disc spring 107 abuts against the stepped surface of the stepped shaft structure, and the top end of the disc spring 107 abuts against the lifting frame 106.

[0052] Correspondingly, a receiving groove can be set in the lifting frame 106, with the groove opening facing downward, and the disc spring 107 is received in the receiving groove and abuts against the groove bottom of the receiving groove (the groove bottom is opposite to its groove opening and is located directly above the groove opening).

[0053] Among them, a top head 1042 can be installed at the bottom end of the lifting rod 1041 to form the above-mentioned stepped shaft structure; the top head 1042 is detachably connected to the lifting rod 1041, for example, threadedly fixed on the lifting rod 1041, so as to facilitate the installation and disassembly of the disc spring 107.

[0054] Based on the above structure, operations such as fixing the roller box 101, replacing the roller box 101, and adjusting the pressing amount of the roller box 101 can be achieved through a set of pressing amount adjustment mechanisms. Specifically:

[0055] Under normal circumstances, the bottom end of the lifting rod 1041 (such as the head 1042) abuts against the roller box 101. Under the elastic force of the disc spring 107, the lifting frame 106 can be pressed against the box body of the spiral lift 104. Under the action of the deadweight of the roller box 101, combined with the constraints of the lifting frame 106 and the lifting rod 1041, the roller box 101 can be reliably installed on the lifting frame 106.

[0056] The adjustment of the pressing amount of the roller box 101 can be achieved by the lifting and lowering driving action of the spiral lifter 104; wherein the disc spring 107 can play a role of buffering and auxiliary pressing, and can reduce the damage to the strip while improving the adjustment accuracy of the pressing amount;

[0057] When the roller box 101 needs to be replaced, the lifting rod 1041 of the spiral elevator 104 rises, and the disc spring 107 is compressed so that the lifting frame 106 is pressed against the box body of the spiral elevator 104, and there is a certain gap d (for example, controlled at 5 to 10 cm) between the bottom end of the lifting rod 1041 and the roller box 101. After losing the constraint of the lifting rod 1041, the roller box 101 can move along the roller changing track 1061, so that the roller changing operation can be performed.

[0058] During the above operation, the working position of the roller box 101 can be reliably controlled by the encoder 105 configured by the driving unit 102 , and the encoder 105 can be an absolute value encoder 105 .

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tension straightening machine for straightening metal strips, characterized in that: It includes an inlet upper steering roller, an inlet lower steering roller, a bending roller system, an inner-segment upper steering roller, a transverse bending straightening roller system, a longitudinal bending straightening roller system and an outlet lower steering roller, which are sequentially arranged along the strip running direction; the bending roller system includes multiple groups of upper bending rollers and multiple groups of lower bending rollers, and the number of upper bending rollers and lower bending rollers is the same and they are configured one by one; the transverse bending straightening roller system includes an upper straightening roller and multiple transverse bending steering rollers located below the strip running channel; the longitudinal bending straightening roller system includes a lower straightening roller and multiple longitudinal bending steering rollers located above the strip running channel; Each of the upper bending roller, the upper straightening roller and the lower straightening roller is provided with a pressing amount adjustment mechanism; Each of the lower bending rollers, each of the transverse bending and steering rollers, and each of the longitudinal bending and steering rollers is equipped with a roller system quick opening mechanism; The inlet upper steering roller, the inlet lower steering roller and the outlet lower steering roller are all equipped with a roller system quick opening mechanism; The upper steering roller in the section is a fixed position roller system; The lower bottom elevation of the inlet upper steering roller after being pressed down and the upper top elevation of the outlet lower steering roller after being pressed up are both the same as the elevation of the strip passing line; the lower bottom elevation of the upper steering roller in the section is higher than the elevation of the strip passing line; the upper top elevation of the inlet lower steering roller after being pressed up is higher than the elevation of the strip passing line; After the roller system quick opening mechanism performs the roller system quick opening, the strip material does not contact any roller equipment of the tension and leveling machine; Each of the upper bending rollers, each of the lower bending rollers, the upper straightening roller and the lower straightening roller are a triple roller system structure.

2. The tension straightening machine for straightening metal strips according to claim 1, characterized in that: The lower bottom elevation of the upper steering roller in the section is 5 to 20 mm higher than the elevation of the strip passing line.

3. The tension straightening machine for straightening metal strips according to claim 1, characterized in that: The upper top elevation after the lower turning roller at the entrance is pressed is 20-80 mm higher than the elevation of the strip passing line.

4. The tension straightening machine for straightening metal strips according to claim 1, characterized in that: Except for the upper steering roller in the section, the remaining roller equipment all adopts an integral roller box structure.

5. The tension straightening machine for straightening metal strips according to claim 1, characterized in that: A squeeze roller is further arranged downstream of the outlet lower deflection roller.

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