A circular blade shear with easy replacement

Abstract

The utility model discloses a disc shear convenient to replace belongs to shearing device technical field, including disc blade and fixing device, fixing device is used for installing disc blade on the main shaft, is provided with two mounting holes on disc blade, and two mounting holes are used for realizing the transfer to disc blade, still be provided with two fixed slots on disc blade, and the both ends of fixed slot all are arranged to arc, and the arc diameter of one end of fixed slot away from the center of disc blade is greater than the arc diameter of one end close to the center of disc blade, and fixed slot is used for realizing the installation between disc blade and fixing device, and the technical scheme of the utility model can realize the automatic replacement of disc shear blade, and the time of replacing blade is greatly saved.

Description

Technical Field

[0001] This utility model relates to the field of shearing device technology, and in particular to a disc shear that is easy to replace. Background Technology

[0002] Disc shears are generally installed at the tail end of rolling mills to cut steel strips. The blades of disc shears need to be replaced after a certain number of cuts. Currently, the replacement is still done manually. Disc shears are large in size, and multiple operators are required to work on the replacement at the same time, which is very inconvenient. Therefore, this utility model proposes a disc shear that is easy to replace and can automatically fix and install the disc blades. Summary of the Invention

[0003] To address the aforementioned technical problems, the present invention adopts the following technical solution: a replaceable disc shear, comprising a disc blade and a fixing device. The fixing device is used to mount the disc blade on a main shaft. The disc blade has two mounting holes for transferring the disc blade. The disc blade also has two fixing slots, both ends of which are arc-shaped. The arc diameter at the end of the fixing slot furthest from the center of the disc blade is larger than the arc diameter at the end closest to the center of the disc blade. The fixing slots are used to mount the disc blade to the fixing device.

[0004] Furthermore, the main shaft is fixedly connected to the main support, the main support is rotatably mounted on the disc shear body, and the main support and the fixing device are rotatably and slidably connected.

[0005] Furthermore, the fixing device includes two fixing rings, which are fixedly mounted on a fixing plate. Both the fixing plate and the fixing rings are hollow inside. A connecting shaft is slidably mounted inside the fixing rings while rotating. The end of the connecting shaft is fixedly connected to a pressure plate. The disc blade is disposed between the fixing plate and the pressure plate. Two fixing slots on the disc blade are set at 180°. The two fixing rings move relative to each other inside the fixing slots to fix the disc blade.

[0006] Furthermore, the fixing plate is fixedly connected to the mounting plate, the mounting plate is provided with a second guide groove, a slide plate is slidably mounted on the second guide groove, a rotating motor is fixedly mounted on the side of the slide plate near the fixing ring, the output shaft of the rotating motor is fixedly connected to the connecting shaft, a baffle is also fixedly mounted on the mounting plate, a second electric cylinder is provided between the baffle and the slide plate, the mounting plate is fixedly mounted on the sliding seat, and a reinforcing plate is provided between the sliding seat and the mounting plate.

[0007] Furthermore, the fixing device also includes a mounting bracket, with a double-ended lead screw rotatably mounted between its two ends. The two ends of the double-ended lead screw are respectively provided with two sections of threads with opposite directions of rotation. One end of the double-ended lead screw is fixedly connected to the output shaft of the motor. The motor is fixedly mounted on the end face of the mounting bracket. Two sliding seats respectively form threaded engagement with the two sections of threaded structure on the double-ended lead screw. The mounting bracket is also provided with two first guide grooves, and the two sliding seats are respectively slidably mounted inside the two first guide grooves. The mounting bracket rotates while slidingly mounted on the main shaft.

[0008] Furthermore, a gear ring is provided on the main shaft, and the outer surface of the gear ring is provided with a toothed structure. A drive motor is fixedly installed on the mounting bracket, and a drive gear is fixedly installed on the output shaft of the drive motor. The drive gear and the gear ring form a gear engagement, and the tooth length on the gear ring is greater than the tooth length on the drive gear.

[0009] Furthermore, the inner side of the main support is provided with an arc-shaped groove, and a slider is slidably installed inside the arc-shaped groove. The slider is fixedly installed on the movable end of the first electric cylinder, and the first electric cylinder is fixedly installed on the mounting bracket.

[0010] The advantages of this utility model compared with the prior art are: the fixing device set in this utility model can automatically align the disc blade with the center of the main shaft, and at the same time insert the disc blade into the main shaft, replacing the heavy manual work, shortening the blade replacement time, and reducing the labor intensity of workers. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the present invention (first-person perspective).

[0012] Figure 2 This is a schematic diagram of the overall structure of the present invention (second perspective).

[0013] Figure 3 This is a schematic diagram of part of the structure of this utility model (first perspective).

[0014] Figure 4 This is a schematic diagram of part of the structure of this utility model (second perspective).

[0015] Figure 5 This is a schematic diagram of the fixing device of this utility model.

[0016] Reference numerals: 1-Disc blade; 2-Mounting hole; 3-Fixing slot; 4-Main shaft; 5-Main support; 6-Mounting bracket; 7-First guide groove; 8-Double-ended lead screw; 9-Sliding seat; 10-Drive motor; 11-Drive gear; 12-Gear ring; 13-Arc groove; 14-Slider; 15-First electric cylinder; 16-Reinforcing plate; 17-Baffle; 18-Mounting plate; 19-Second electric cylinder; 20-Second guide groove; 21-Slide plate; 22-Rotating motor; 23-Fixing plate; 24-Fixing ring; 25-Pressure plate; 26-Connecting shaft. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0018] Example: Figures 1-5 As shown, a replaceable disc shear includes a disc blade 1 and a fixing device. The fixing device is used to mount the disc blade 1 on the main shaft 4. The disc blade 1 is provided with two mounting holes 2, which are used to transfer the disc blade 1. The disc blade 1 is also provided with two fixing slots 3. Both ends of the fixing slots 3 are arc-shaped. The arc diameter of the end of the fixing slot 3 away from the center of the disc blade 1 is larger than the arc diameter of the end closer to the center of the disc blade 1. The fixing slots 3 are used to install the disc blade 1 with the fixing device.

[0019] The main shaft 4 is fixedly connected to the main support 5, which is rotatably mounted on the disc shear body. The main support 5 is rotatably and slidably connected to the fixing device.

[0020] The fixing device includes two fixing rings 24, which are fixedly mounted on a fixing plate 23. Both the fixing plate 23 and the fixing rings 24 are hollow. A connecting shaft 26 is slidably mounted inside the fixing rings 24 while rotating. The end of the connecting shaft 26 is fixedly connected to a pressure plate 25. The disc blade 1 is disposed between the fixing plate 23 and the pressure plate 25. Two fixing slots 3 on the disc blade 1 are set at 180°. The two fixing rings 24 move relative to each other inside the fixing slots 3 to fix the disc blade 1.

[0021] The fixed plate 23 is fixedly connected to the mounting plate 18. The mounting plate 18 is provided with a second guide groove 20. A slide plate 21 is slidably mounted on the second guide groove 20. A rotary motor 22 is fixedly mounted on the side of the slide plate 21 near the fixed ring 24. The output shaft of the rotary motor 22 is fixedly connected to the connecting shaft 26. A baffle 17 is also fixedly mounted on the mounting plate 18. A second electric cylinder 19 is provided between the baffle 17 and the slide plate 21. The mounting plate 18 is fixedly mounted on the sliding seat 9. A reinforcing plate 16 is provided between the sliding seat 9 and the mounting plate 18.

[0022] The fixing device also includes a mounting bracket 6, with a double-ended lead screw 8 rotatably mounted between the two ends of the mounting bracket 6. The two ends of the double-ended lead screw 8 are respectively provided with two sections of threads with opposite directions of rotation. One end of the double-ended lead screw 8 is fixedly connected to the output shaft of the motor. The motor is fixedly mounted on the end face of the mounting bracket 6. Two sliding seats 9 respectively form a threaded engagement with the two sections of thread structure on the double-ended lead screw 8. The mounting bracket 6 is also provided with two first guide grooves 7. The two sliding seats 9 are respectively slidably mounted inside the two first guide grooves 7. The mounting bracket 6 rotates and is slidably mounted on the main shaft 4.

[0023] A gear ring 12 is provided on the main shaft 4. The gear ring 12 has a toothed structure on its outside. A drive motor 10 is fixedly installed on the mounting bracket 6. A drive gear 11 is fixedly installed on the output shaft of the drive motor 10. The drive gear 11 and the gear ring 12 form a gear engagement. The length of the tooth on the gear ring 12 is greater than the length of the tooth on the drive gear 11.

[0024] An arc-shaped groove 13 is provided on the inner side of the main support 5. A slider 14 is slidably installed inside the arc-shaped groove 13. The slider 14 is fixedly installed on the movable end of the first electric cylinder 15. The first electric cylinder 15 is fixedly installed on the mounting bracket 6.

[0025] The working principle of this utility model discloses an easy-to-replace disc shear as follows: During use, two insert rods are inserted into the two mounting holes 2 on the disc blade 1. At this time, the length direction of the pressure plate 25 is parallel to the length direction of the fixing slot 3 on the disc blade 1, and the two fixing rings 24 are positioned in the middle of the fixing slot 3. After inserting the disc blade 1 into the two fixing rings 24, the rotating motor 22 is started. The rotating motor 22 drives the pressure plate 25 to rotate through the connecting shaft 26. At this time, the length direction of the pressure plate 25 is perpendicular to the length direction of the fixing slot 3. Next, the second electric cylinder 19 is started. The second electric cylinder 19 drives the sliding plate 21 to slide inside the second guide groove 20, thereby driving the pressure plate 25 to slide towards the fixing plate 23, clamping the disc blade 1 on the pressure plate. Between the 25 and the fixed plate 23, the motor connected to the double-ended lead screw 8 is started. The double-ended lead screw 8 rotates and drives the two sliding seats 9 to move closer to each other, thereby driving the two fixed rings 24 to slide closer to each other inside the fixed slot 3. The diameter of the fixed rings 24 is between the diameters of the arcs at both ends of the fixed slot 3. When the two fixed rings 24 are tangent to the two fixed slots 3 respectively, the main shaft 4 and the disc blade 1 are concentric. The drive motor 10 is started. The drive motor 10 drives the mounting bracket 6 to rotate around the main shaft 4 through the drive gear 11 and the gear ring 12, so that the plane on the main shaft 4 is parallel to the plane on the center hole of the disc blade 1. After adjustment, the movable end of the first electric cylinder 15 retracts, so that the disc blade 1 is inserted into the main shaft 4, completing the replacement and installation of the disc blade 1.

Claims

1. A replaceable disc shear, characterized in that: The device includes a disc blade (1) and a fixing device. The fixing device is used to install the disc blade (1) on the spindle (4). The disc blade (1) is provided with two mounting holes (2) for transferring the disc blade (1). The disc blade (1) is also provided with two fixing slots (3). Both ends of the fixing slots (3) are arc-shaped. The arc diameter of the end of the fixing slot (3) away from the center of the disc blade (1) is larger than the arc diameter of the end closer to the center of the disc blade (1). The fixing slots (3) are used to install the disc blade (1) with the fixing device.

2. The easily replaceable disc shear according to claim 1, characterized in that: The main shaft (4) is fixedly connected to the main support (5), and the main support (5) is rotatably mounted on the disc shear body. The main support (5) is rotatably and slidably connected to the fixing device.

3. The easily replaceable disc shear according to claim 2, characterized in that: The fixing device includes two fixing rings (24), which are fixedly installed on the fixing plate (23). Both the fixing plate (23) and the fixing rings (24) are hollow inside. A connecting shaft (26) is slidably installed inside the fixing rings (24) while rotating. The end of the connecting shaft (26) is fixedly connected to the pressure plate (25). The disc blade (1) is set between the fixing plate (23) and the pressure plate (25). Two fixing slots (3) on the disc blade (1) are set at 180°. The two fixing rings (24) move relative to each other inside the fixing slots (3) to fix the disc blade (1).

4. The easily replaceable disc shear according to claim 3, characterized in that: The fixed plate (23) is fixedly connected to the mounting plate (18). The mounting plate (18) is provided with a second guide groove (20). A sliding plate (21) is slidably installed on the second guide groove (20). A rotating motor (22) is fixedly installed on the side of the sliding plate (21) near the fixed ring (24). The output shaft of the rotating motor (22) is fixedly connected to the connecting shaft (26). A baffle (17) is also fixedly installed on the mounting plate (18). A second electric cylinder (19) is provided between the baffle (17) and the sliding plate (21). The mounting plate (18) is fixedly installed on the sliding seat (9). A reinforcing plate (16) is provided between the sliding seat (9) and the mounting plate (18).

5. The easily replaceable disc shear according to claim 4, characterized in that: The fixing device also includes a mounting bracket (6), with a double-ended lead screw (8) rotatably mounted between the two ends of the mounting bracket (6). The two ends of the double-ended lead screw (8) are respectively provided with two sections of threads with opposite directions of rotation. One end of the double-ended lead screw (8) is fixedly connected to the output shaft of the motor. The motor is fixedly mounted on the end face of the mounting bracket (6). Two sliding seats (9) respectively form a threaded engagement with the two sections of thread structure on the double-ended lead screw (8). The mounting bracket (6) is also provided with two first guide grooves (7). The two sliding seats (9) are respectively slidably mounted inside the two first guide grooves (7). The mounting bracket (6) rotates and is slidably mounted on the main shaft (4).

6. The easily replaceable disc shear according to claim 5, characterized in that: A gear ring (12) is provided on the main shaft (4). The gear ring (12) has a toothed structure on its outside. A drive motor (10) is fixedly installed on the mounting bracket (6). A drive gear (11) is fixedly installed on the output shaft of the drive motor (10). The drive gear (11) and the gear ring (12) form a gear engagement. The tooth length on the gear ring (12) is greater than the tooth length on the drive gear (11).

7. The easily replaceable disc shear according to claim 6, characterized in that: The main support (5) has an arc groove (13) on its inner side. A slider (14) is slidably installed inside the arc groove (13). The slider (14) is fixedly installed on the movable end of the first electric cylinder (15). The first electric cylinder (15) is fixedly installed on the mounting bracket (6).

Images