Device for improving or eliminating reverse tool marks of strip steel

Abstract

The utility model discloses a device for improving or eliminating reverse tool marks of strip steel, which belongs to the technical field of strip steel processing equipment, and comprises a circle shear, a carrier roller frame is mounted at the bottom of the center of the circle shear, and a supporting carrier roller is rotatably connected to the carrier roller frame. The two rows of supporting carrier rollers are arranged, and a downward pressing device is installed above the supporting carrier rollers and can enable the two ends of an air cylinder to be matched with a second connecting piece and a connecting rod to rotate correspondingly, press rollers are pressed downwards and abut against the strip steel, the strip steel is clamped and stabilized, and the strip steel does not bounce in a wave mode due to strip steel plate shape defects in the rapid running process, so that the service life of the strip steel is prolonged, and the service life of the strip steel is prolonged. Abnormal tearing of the strip steel and the circle shear is avoided, reverse tool marks generated by fluctuation of the strip steel are eliminated, the trimming quality of the circle shear is greatly improved, the reverse tool marks of the strip steel are eliminated and improved by 95%, and consumption of a rubber cutter pad is saved by 50%.

Description

Technical Field

[0001] The utility model relates to the technical field of strip steel processing equipment, and more specifically to a device for improving or eliminating reverse knife marks of strip steel. Background Art

[0002] The disc shear is only used for trimming the strip in the cross-cutting unit, and can perform longitudinal continuous shearing of narrow and wide strips in the longitudinal shearing unit. It can be used for longitudinal shearing of raw materials for cold-rolled strip steel, and is also the main equipment for the longitudinal shearing and re-coiling production line of cold-rolled strip steel.

[0003] The trimming shear (disc shear) is an important imported equipment in the cold rolling pickling workshop, which is mainly used to trim the strip steel before rolling. In the production process, the middle wave or edge wave of the raw material version is very easy to have reverse knife marks (scratches), which directly affects the product quality of the subsequent process. For example, the bright marks of tinplate and the quality defects that cannot be covered by galvanized sheets, so we proposed a device to improve or eliminate the reverse knife marks of strip steel to solve the above problems. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a device for improving or eliminating the reverse knife marks of the strip, which can make the two ends of the cylinder cooperate with the second connecting piece and the connecting rod to rotate, press the pressure roller down and abut against the strip, so as to tighten and stabilize the strip, so that the strip will not cause wave jumps due to strip plate defects during fast running, the strip and the circular shear will not produce abnormal tearing, eliminate the reverse knife marks caused by strip fluctuations, greatly improve the trimming quality of the circular shear, improve the elimination of reverse knife marks on the strip by 95%, and save 50% of the consumption of rubber knife pads.

[0006] 2. Technical solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A device for improving or eliminating reverse knife marks of a steel strip comprises a disc shear, a roller frame is installed at the central bottom of the disc shear, a supporting roller is rotatably connected to the roller frame, and the supporting roller is arranged in two rows;

[0009] A pressing device is installed above the supporting roller;

[0010] The pressing device includes a first connecting member symmetrically arranged above the roller frame and fixedly connected to the circular shear, a connecting arm with an end rotatably connected to the first connecting member, a pressure roller installed at an end of the connecting arm away from the first connecting member, a connecting rod installed on one side of the pressure roller, a second connecting member installed above the first connecting member and located at the center top of the circular shear, and a cylinder with one end rotatably connected to the connecting rod and the other end rotatably connected to the second connecting member.

[0011] Furthermore, shaft heads are integrally formed at both ends of the supporting roller, and bearings are installed at the locations where the shaft heads are combined with the roller frame.

[0012] Furthermore, one end of the connecting arm close to the first connecting member is fixedly connected to a rotating shaft, and the rotating shaft is connected to the first connecting member via a bearing.

[0013] Furthermore, both ends of the pressure roller are integrally formed with square connectors, and the square connectors are fixedly connected to the connecting arms.

[0014] Furthermore, ear plates are installed at both ends of the connecting rod, and the ear plates are fixedly connected to the connecting arms.

[0015] Furthermore, the longitudinal cross-section of the connecting rod is circular.

[0016] Furthermore, a connecting shaft is installed at the second connecting member;

[0017] Both ends of the cylinder are provided with connecting ears, and the connecting ears are rotatably connected to the connecting shaft and the connecting rod respectively.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] Before and after the installation of this device, the improvement in eliminating the reverse knife marks on the strip steel was increased by 95%, and the consumption of rubber knife pads was saved by 50%. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the roller frame structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the connecting arm structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the cylinder structure of the utility model.

[0025] Description of the numbers in the figure:

[0026] Disc shear; 2. Roller frame; 3. Support roller; 4. First connecting piece; 5. Connecting arm; 6. Pressing roller; 7. Connecting rod; 8. Second connecting piece; 9. Cylinder; 10. Connecting ear. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model. Example

[0028] See also Figure 1-4 , a device for improving or eliminating reverse knife marks of strip steel, comprising a disc shear 1, a roller frame 2 is installed at the center bottom of the disc shear 1, a supporting roller 3 is rotatably connected to the roller frame 2, and the supporting roller 3 is arranged in two rows;

[0029] A pressing device is installed above the supporting roller 3;

[0030] The pressing device includes a first connecting member 4 symmetrically arranged above the roller frame 2 and fixedly connected to the circular shear 1, a connecting arm 5 rotatably connected to the first connecting member 4 at one end, a pressing roller 6 installed at an end of the connecting arm 5 away from the first connecting member 4, a connecting rod 7 installed on one side of the pressing roller 6, a second connecting member 8 installed above the first connecting member 4 and located at the center top of the circular shear 1, and a cylinder 9 with one end rotatably connected to the connecting rod 7 and the other end rotatably connected to the second connecting member 8;

[0031] It should be noted that when the device for improving or eliminating the reverse knife marks on the strip is in use, the cylinder 9 is controlled by the pneumatic unit and the PLC program, and the strip is supported by the supporting rollers 3 installed at the roller frame 2. At the same time, the movable end of the cylinder 9 is extended, so that the two ends of the cylinder 9 respectively cooperate with the second connecting piece 8 and the connecting rod 7 to rotate, and the pressure roller 6 is pressed down and abutted against the strip. The function is to tighten and stabilize the strip, so that the strip will not cause wave jumps due to strip plate defects during fast running, the strip and the disc shear 1 will not produce abnormal tearing, the reverse knife marks caused by strip fluctuations are eliminated, and the trimming quality of the disc shear 1 is greatly improved.

[0032] like Figure 2 As shown, both ends of the supporting roller 3 are integrally formed with shaft heads, and bearings are installed at the positions where the shaft heads are combined with the roller frame 2;

[0033] It should be noted that the friction between the supporting roller 3 and the roller frame 2 is reduced, and the rotation accuracy of the supporting roller 3 is guaranteed.

[0034] like Figure 3 As shown, one end of the connecting arm 5 close to the first connecting member 4 is fixedly connected with a rotating shaft, and the rotating shaft is connected to the first connecting member 4 through a bearing;

[0035] It should be noted that the connecting arm 5 can be rotated in coordination with the first connecting member 4 to allow it to swing freely up and down.

[0036] like Figure 3 As shown, both ends of the pressing roller 6 are integrally formed with square connectors, and the square connectors are fixedly connected to the connecting arm 5;

[0037] It should be noted that the strip will not cause wave jumping due to strip shape defects during the fast running process, the strip and the disc shear 1 will not produce abnormal tearing, and the reverse knife marks caused by strip fluctuations are eliminated.

[0038] like Figure 1 , Figure 3 , Figure 4 As shown, ear plates are installed at both ends of the connecting rod 7, and the ear plates are fixedly connected to the connecting arm 5. The longitudinal cross-section of the connecting rod 7 is circular, a connecting shaft is installed at the second connecting member 8, and connecting ears 10 are installed at both ends of the cylinder 9. The connecting ears 10 are rotatably connected to the connecting shaft and the connecting rod 7 respectively;

[0039] It should be noted that, by extending the movable end of the cylinder 9, the two ends of the cylinder 9 respectively cooperate with the second connecting member 8 and the connecting rod 7 to rotate, pressing the pressure roller 6 downward and abutting against the strip, so as to clamp and stabilize the strip.

[0040] When in use: the cylinder 9 is controlled by the pneumatic unit and the PLC program, and the strip steel is supported by the supporting rollers 3 installed at the roller frame 2. At the same time, the movable end of the cylinder 9 is extended, so that the two ends of the cylinder 9 respectively cooperate with the second connecting piece 8 and the connecting rod 7 to rotate, and the pressure roller 6 is pressed down and abutted against the strip steel. The function is to tighten and stabilize the strip steel, so that the strip steel will not cause wave jumps due to strip steel plate defects during fast running, and the strip steel and the disc shear 1 will not produce abnormal tearing, eliminate the reverse knife marks caused by strip steel fluctuations, and greatly improve the trimming quality of the disc shear 1.

[0041] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A device for improving or eliminating reverse knife marks on a steel strip, comprising a circular shear (1), characterized in that: A roller frame (2) is installed at the central bottom of the circular shear (1), and support rollers (3) are rotatably connected to the roller frame (2), and the support rollers (3) are arranged in two rows; A pressing device is installed above the supporting roller (3); The pressing device comprises a first connecting member (4) symmetrically arranged above the roller frame (2) and fixedly connected to the circular shear (1), a connecting arm (5) whose end is rotatably connected to the first connecting member (4), a pressure roller (6) mounted on the end of the connecting arm (5) away from the first connecting member (4), a connecting rod (7) mounted on one side of the pressure roller (6), a second connecting member (8) mounted above the first connecting member (4) and located at the center top of the circular shear (1), and a cylinder (9) one end of which is rotatably connected to the connecting rod (7) and the other end of which is rotatably connected to the second connecting member (8).

2. The device for improving or eliminating reverse knife marks on a steel strip according to claim 1, characterized in that: Both ends of the supporting roller (3) are integrally formed with shaft heads, and bearings are installed at the locations where the shaft heads are combined with the roller frame (2).

3. The device for improving or eliminating reverse knife marks of a steel strip according to claim 1, characterized in that: One end of the connecting arm (5) close to the first connecting member (4) is fixedly connected to a rotating shaft, and the rotating shaft is connected to the first connecting member (4) via a bearing.

4. The device for improving or eliminating reverse knife marks of a steel strip according to claim 1, characterized in that: Both ends of the pressing roller (6) are integrally formed with square connectors, and the square connectors are fixedly connected to the connecting arms (5).

5. The device for improving or eliminating reverse knife marks on a steel strip according to claim 1, characterized in that: Ear plates are installed at both ends of the connecting rod (7), and the ear plates are fixedly connected to the connecting arm (5).

6. The device for improving or eliminating reverse knife marks on a steel strip according to claim 1, characterized in that: The longitudinal cross-section of the connecting rod (7) is circular.

7. The device for improving or eliminating reverse knife marks on a steel strip according to claim 1, characterized in that: A connecting shaft is installed at the second connecting member (8); Connecting ears (10) are installed at both ends of the cylinder (9), and the connecting ears (10) are rotatably connected to the connecting shaft and the connecting rod (7) respectively.

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