Shearing and positioning device for medium-thickness plate

Abstract

The utility model provides a medium plate shearing and positioning device which comprises a first positioning assembly arranged at the feeding end of a shearing machine and a second positioning assembly arranged at the lower end of the first positioning assembly, and plates are conveyed to pass through the first positioning assembly and the second positioning assembly. The first positioning assembly is used for limiting vertical displacement of the plate. The second positioning assembly comprises a first driving part, a first conveying assembly conveying in the plate direction, a second conveying assembly conveying in the plate width direction and a locking assembly arranged on the second conveying assembly. The second conveying assembly drives the two locking assemblies to be close to or away from the two ends of the plate and is used for limiting displacement of the plate in the width direction. The first driving part drives the second conveying assembly and the locking assembly to move in a reciprocating mode in the plate feeding direction. According to the plate conveying device, plates are prevented from moving in the plate conveying process, the position accuracy of plate notches is improved, the parallelism of the two ends of the plates is effectively guaranteed, and the cutting quality of the plates is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to middle thick plate processing technical field, especially a middle thick plate shearing positioning device. BACKGROUND

[0002] The middle thick plate is mainly applied to building engineering, machinery manufacturing and bridge construction etc., and can also manufacture container, boiler steel plate, some parts of tractor and welded component etc. The middle thick plate decoiling line is mainly used for becoming the flat plate material of required length and width through decoiling, leveling and shearing to different specifications of metal coil stock. It is suitable for processing middle thick plate, high strength steel, stainless steel and other metal plate material. It includes multiple shearing procedures, such as head cutting shear, double side shear, fixed size shear and tail cutting shear etc. These shearing equipment are sequentially arranged along the advancing direction of the steel plate mother plate to be sheared, and the steel plate sequentially passes through each shearing procedure for shearing in the conveying process.

[0003] At present, the shearing precision of the middle thick plate shearing production line for manufacturing plate material is not high. For example, in the steel plate shearing process, since the shearing end of the steel plate is inconvenient to limit, the rear end of the steel plate is pressed tightly, but the shearing end still easily moves in the left and right directions in the shearing process, which leads to the inclination of the steel plate, cannot guarantee the regular shape of the cut steel plate, not only affects the appearance of the steel plate, and seriously causes the size change of the steel plate, increases the metal consumption. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the utility model aims at providing a middle thick plate shearing positioning device to prevent the deviation of the steel plate in the shearing process and guarantee the cutting size of the steel plate.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A middle thick plate shearing positioning device, which comprises a first positioning assembly arranged at the feeding end of a shearing machine, and a second positioning assembly arranged at the lower end of the first positioning assembly;

[0007] The plate material is conveyed through the first positioning assembly and the second positioning assembly;

[0008] The first positioning assembly is used for limiting the displacement of the plate material in the up and down directions;

[0009] The second positioning assembly comprises a first driving part, a first conveying assembly conveying in the direction of the plate material, a second conveying assembly conveying in the width direction of the plate material, and a locking assembly arranged on the second conveying assembly;

[0010] The second conveying assembly drives the two locking assemblies to approach or move away from the two ends of the plate material, and the second conveying assembly is used for limiting the displacement of the plate material in the width direction;

[0011] The first driving part drives the second transmission assembly and the locking assembly to reciprocate along the feeding direction of the plate.

[0012] Further, the first positioning assembly comprises a first rack, a second driving part arranged on the first rack, a pressing roller arranged on the power output end of the second driving part, and a receiving roller pivotally connected to the first rack.

[0013] The receiving roller is arranged directly below the pressing roller, and the plate passes between the receiving roller and the pressing roller.

[0014] Further, the first transmission assembly comprises a second rack, a driving roller and a driven roller pivotally connected to both ends of the second rack, and a first transmission belt sleeved on the driving roller and the driven roller.

[0015] The power output end of the first driving part is connected to the driving roller, and the first driving part drives the first transmission belt to transmit motion.

[0016] Two first transmission belts are arranged at both ends of the driving roller and the driven roller, and the second transmission assembly is fixed on the two first transmission belts through a mounting plate.

[0017] The mounting plate extends along the width direction of the plate.

[0018] The second rack is arranged inside the first rack, and the first driving part drives the second transmission assembly to move from the first positioning assembly to the shearing machine.

[0019] Further, the transmission speed of the second transmission assembly is the same as that of the plate.

[0020] Further, the second transmission assembly comprises a first sprocket and a second sprocket pivotally connected to both ends of the mounting plate, a second transmission belt meshingly connected to the first sprocket and the second sprocket, and a support seat for supporting the locking assembly.

[0021] The mounting plate is further provided with a third driving part for driving the second transmission belt to transmit motion, and the power output end of the third driving part is connected to the first sprocket.

[0022] Two support seats are arranged on the left side and the right side of the second transmission belt, and the two support seats are oppositely arranged along the width direction of the second rack.

[0023] Further, the second transmission belt is provided with a fixed plate on one side of the support seat, the fixed plate and the adjacent end of the support seat are respectively provided with an open groove, and the two grooves form a containing cavity for containing the second transmission belt.

[0024] Further, the locking assembly comprises a seat body connected to the support seat, a supporting rod slidingly connected to the seat body, and at least one pressing wheel connected to the supporting rod and close to one end of the plate.

[0025] The pressing wheel is pivotally connected to the supporting rod, and the supporting rod is inserted into the seat body along the width direction of the plate.

[0026] When the third driving part drives the two support seats to move towards the center of the plate, the pressing wheels abut against the two sides of the plate to limit the displacement of the plate in the width direction of the shearing machine.

[0027] Further, the supporting rod is provided with a limiting part on the side away from the pressing wheel, and the limiting part and the pressing wheel limit the supporting rod from being pulled out of the seat body.

[0028] The limiting part and the seat body are further provided with an elastic member, and when the pressing wheel abuts against the plate, the elastic member is compressed and stored.

[0029] Further, a plurality of pressing wheels are sequentially and spacedly arranged along the feeding direction of the plate.

[0030] Compared with the prior art, the present application has the following advantages:

[0031] The plate shearing positioning device has the first positioning assembly arranged to press and fix the plate before shearing to limit the displacement of the plate in the height direction. The second positioning assembly is arranged to drive the two locking assemblies to move close to and abut against the plate through the second transmission assembly to limit the displacement of the plate in the width direction. The first driving part is arranged to drive the locking assembly to move towards the shearing machine after locking the plate, so that the plate is prevented from moving during the conveying process. The plate shearing positioning device not only increases the position accuracy of the plate cutout, but also effectively ensures the parallelism of the two ends of the plate and improves the cutting quality of the plate.

[0032] In addition, the support seat is connected to the left side and the right side of the second transmission belt, and the two support seats are oppositely arranged along the width direction of the second support. The two locking assemblies are arranged on the two support seats, respectively. When the third driving part drives the locking assembly to move towards the plate, the two locking assemblies move towards the plate synchronously, so that the plate is effectively positioned before the double-side shearing process, and the cutting waste caused by the deviation of the material is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0033] The accompanying drawings, which form a part of the disclosure, are used to provide further understanding of the disclosure, and serve as an explanation of the illustrative embodiments thereof, and do not constitute improper limitations to the disclosure. In the drawings:

[0034] Figure 1 A front view schematic diagram of the plate shearing positioning device according to an embodiment of the disclosure;

[0035] Figure 2 A top view schematic diagram of the plate shearing positioning device according to an embodiment of the disclosure;

[0036] Figure 3 A left view schematic diagram of the second positioning assembly according to an embodiment of the disclosure;

[0037] Figure 4 A top view schematic diagram of the second transmission assembly according to an embodiment of the disclosure;

[0038] Figure 5 A connection structure schematic diagram of the fixed plate, the support seat, the mounting plate and the second transmission belt according to an embodiment of the disclosure;

[0039] Figure 6 A connection structure schematic diagram of the support rod, the seat body and the pressing wheel according to an embodiment of the disclosure. Figure 4 A local enlarged schematic diagram at I;

[0040] Figure 7 A connection structure schematic diagram of the support rod, the seat body and the pressing wheel according to an embodiment of the disclosure.

[0041] BRIEF DESCRIPTION OF DRAWINGS

[0042] 1, first positioning assembly; 2, second positioning assembly; 3, plate; 4, shearing machine;

[0043] 101, first rack; 102, second driving part; 103, pressing roller; 104, receiving roller;

[0044] 201, first driving part; 202, first transmission assembly; 203, second transmission assembly; 204, locking assembly;

[0045] 2021, second rack; 2022, driving roller; 2023, driven roller; 2024, first transmission belt; 2025, mounting plate;

[0046] 2031, first sprocket; 2032, second sprocket; 2033, second transmission belt; 2034, support seat; 2035, third driving part; 2036, fixed plate; 2037, pin shaft; 2038, horizontal plate; 2039, locking block;

[0047] 2041, seat body; 2042, support rod; 2043, pressing wheel; 2044, limiting part; 2045, elastic member. DETAILED DESCRIPTION

[0048] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0049] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0050] In addition, in the description of the present application, unless otherwise explicitly limited, the terms "mounting", "connecting", "connection", "connector" should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood in combination with the specific circumstances.

[0051] The present application will be described in detail below with reference to the drawings and in combination with embodiments.

[0052] The present embodiment relates to a plate shearing positioning device, which comprises a first positioning assembly 1 arranged at the feeding end of a shearing machine 4, and a second positioning assembly 2 arranged at the lower end of the first positioning assembly 1. A plate 3 is transmitted through the first positioning assembly 1 and the second positioning assembly 2. The first positioning assembly 1 is used to limit the displacement of the plate 3 in the vertical direction.

[0053] The second positioning assembly 2 comprises a first driving part 201, a first transmission assembly 202 arranged in the direction of the plate 3, a second transmission assembly 203 arranged in the width direction of the plate 3, and a locking assembly 204 arranged on the second transmission assembly 203. The second transmission assembly 203 drives the two locking assemblies 204 to approach or move away from the two ends of the plate 3, and the second transmission assembly 203 is used to limit the displacement of the plate 3 in the width direction. The first driving part 201 drives the second transmission assembly 203 and the locking assembly 204 to move back and forth in the feeding direction of the plate 3.

[0054] The plate shearing positioning device of the embodiment is provided with the first positioning assembly 1, which is used to press and fix the plate 3 before shearing to limit the displacement of the plate 3 in the height direction. Meanwhile, the second positioning assembly 2 is provided, which is used to drive the two locking assemblies 204 to abut on the plate 3 through the second transmission assembly 203 to limit the displacement of the plate 3 in the width direction, and the first driving part 201 is used to drive the locking assembly 204 to move to the shearing machine 4 after locking the plate 3, so that the plate 3 is prevented from moving in the feeding direction during the feeding of the plate 3, the position accuracy of the cut of the plate 3 is improved, the parallelism of the two ends of the plate 3 is effectively ensured, and the cutting quality of the plate 3 is improved.

[0055] Based on the above overall introduction, an exemplary structure of the plate shearing positioning device of the embodiment is shown in Figures 1 to 3 The positioning device is arranged at the front end of the gauge shear, and in actual production, the positioning device is also arranged at the front end of the double-sided shear to position the plate 3 before shearing.

[0056] As a preferred embodiment, the first positioning assembly 1 comprises the first rack 101, the second driving part 102 arranged on the first rack 101, the pressing roller 103 arranged on the power output end of the second driving part 102, and the receiving roller 104 pivotally connected to the first rack 101. The receiving roller 104 is arranged directly below the pressing roller 103, and the plate 3 passes between the receiving roller 104 and the pressing roller 103. The pressing roller 103 is provided with landing gears (not shown in the figure) at both ends thereof, and the landing gears slide along the height direction of the second driving part 102. The pressing roller 103 is fixedly connected to the landing gears. In this way, the friction between the plate 3 and the pressing roller 103 is increased when the plate 3 is cut by the gauge shear. Specifically, the second driving part 102 is a telescopic air cylinder.

[0057] It should be noted that the pressing roller 103 can also be pivotally connected to the landing gears, and a motor is arranged on the pressing roller. When the pressing roller 103 and the receiving roller abut on the plate 3, the motor drives the plate 3 to move. In addition, an air regulating valve needs to be added to the second driving part 102. When cutting is needed, the output force of the air cylinder is increased to prevent the plate 3 from moving in the feeding direction.

[0058] As shown in Figures 1 to 3 The first transmission assembly 202 comprises the second rack 2021, the driving roller 2022 and the driven roller 2023 pivotally connected to both ends of the second rack 2021, and the first transmission belt 2024 sleeved on the driving roller 2022 and the driven roller 2023. The power output end of the first driving part 201 is connected to the driving roller 2022, and the first driving part 201 drives the first transmission belt 2024 to move.

[0059] As shown in Figure 3As shown, two first transmission belts 2024 are arranged at both ends of the driving roller 2022 and the driven roller 2023, and the second transmission assembly 203 is fixed on the two first transmission belts 2024 through the mounting plate 2025. The mounting plate 2025 extends along the width direction of the plate 3. The second rack 2021 is arranged inside the first rack 101, and the first driving part 201 drives the second transmission assembly 203 to move from the first positioning assembly 1 to the shearing machine 4. The first driving part 201 adopts a servo motor, which can accurately control the moving speed of the second transmission assembly 203.

[0060] Further, the transmission speed of the second transmission assembly 203 of the embodiment is the same as the transmission speed of the plate 3. In this way, the clamping of the plate 3 during movement can be ensured, and the deviation of the plate 3 can be avoided. When the double-sided shearing is performed, in order to prevent the movement interference between the second transmission assembly 203 and the shearing machine 4, the positioning device can be arranged at the inlet end and the outlet end of the double-sided shearing machine 4, and the locking assembly 204 can be locked on the plate 3, and the second transmission assembly 203 is in a fixed position.

[0061] As a preferred embodiment, as shown in Figures 1 to 4 The second transmission assembly 203 includes a first sprocket 2031 and a second sprocket 2032 pivotally connected at both ends of the mounting plate 2025, a second transmission belt 2033 meshingly connected on the first sprocket 2031 and the second sprocket 2032, and a support seat 2034 for supporting the locking assembly 204.

[0062] As shown in Figure 4 The mounting plate 2025 further has a third driving part 2035 for driving the transmission movement of the second transmission belt 2033, and the power output end of the third driving part 2035 is connected to the first sprocket 2031. The two support seats 2034 are arranged on the left side and the right side of the second transmission belt 2033, and the two support seats 2034 are oppositely arranged along the width direction of the second rack 2021.

[0063] As shown in Figure 4 The mounting plate 2025 is a rectangular long strip plate structure, which is fixed on the first transmission belt 2024 through bolts, and the first transmission belt 2024 can adopt a synchronous belt, and the second transmission belt 2033 adopts a chain. As shown in Figure 4 and Figure 5 The support seat 2034 is L-shaped, and the horizontal plate thereof is located at the upper end of the mounting plate 2025, and is used for mounting the locking assembly 204.

[0064] In this embodiment, the support seat 2034 is connected to the left and right sides of the second transmission belt 2033, and the two support seats 2034 are oppositely arranged along the width direction of the second support, and the two locking assemblies 204 are arranged on the two support seats 2034 respectively. When the third driving part 2035 drives the locking assembly 204 to move towards the direction close to the plate 3, the two locking assemblies 204 move synchronously towards the plate 3, which ensures that the plate 3 is located at the center position, effectively positions the plate 3 before the double-side shearing process, and avoids cutting waste caused by material deviation.

[0065] Further, as shown in Figure 5 , the second transmission belt 2033 is provided with a fixed plate 2036 opposite to one side of the support seat 2034, and the fixed plate 2036 and the adjacent end of the support seat 2034 are respectively provided with an open-ended groove, and the two grooves form a receiving cavity for accommodating the second transmission belt 2033. The fixed plate 2036 and the support seat 2034 are bolted and fixedly connected on the second transmission belt 2033. The fixed plate 2036 is a rectangular plate structure, and the vertical plate of the support seat 2034 is bolted and fastened with the fixed plate 2036. Preferably, the thickness of the receiving cavity is greater than the sum of the two grooves, so as to increase the pre-tightening force of the bolts.

[0066] In addition, as shown in Figure 5 and Figure 6 , in order to avoid the sliding phenomenon of the locking assembly 204 after being pressed and the second transmission belt 2033, the fixed plate 2036 and the chain are fixed by adding a pin shaft 2037.

[0067] Moreover, in order to ensure the use effect of the locking assembly 204 and prevent the second transmission belt 2033 from being twisted due to relaxation, as shown in Figure 5 and Figure 6 , the fixed plate 2036 is provided in an L shape, the vertical plate of the support seat 2034 is welded with a horizontal plate 2038 at the end away from the horizontal plate, and "7" shaped locking blocks 2039 are further arranged at both ends of the mounting plate 2025. One end of the locking block 2039 is clamped on the horizontal section of the fixed plate 2036 and the horizontal plate 2038 of the support seat 2034. This prevents the support seat 2034 and the fixed plate 2036 from swinging, and ensures the effectiveness and stability of the locking assembly 204. As shown in Figure 3 and Figure 4 , the locking block 2039 is arranged along the extension direction of the mounting plate 2025, and the locking block 2039 is connected in a strip shape on the mounting plate 2025 and located at the fixed plate 2036 and the support seat 2034.

[0068] As shown in Figure 3 and Figure 4As shown, two groups of opposite locking blocks 2039 are arranged on both sides of the second transmission belt 2033, so as to limit the torsion of the fixed plate 2036 and the support seat 2034 during the movement. In addition, in order to improve the smoothness of the sliding of the support seat 2034 and the fixed plate 2036, a copper sheet layer is arranged on the contact surface of the fixed plate 2036, the support seat 2034 and the mounting plate 2025, so as to avoid the jamming.

[0069] In addition, as Figure 7 shown, the locking assembly 204 comprises a seat body 2041 connected to the support seat 2034, a support rod 2042 slidingly connected to the seat body 2041, and at least one pressing wheel 2043 connected to one end of the support rod 2042 close to the plate 3. The pressing wheel 2043 is pivotally connected to the support rod 2042, and the support rod 2042 is inserted into the seat body 2041 along the width direction of the plate 3.

[0070] As Figure 7 shown, a deep groove ball bearing is arranged between the pressing wheel 2043 and the support rod 2042. When the third driving part 2035 drives the two support seats 2034 to move close to the center of the plate 3, the pressing wheel 2043 abuts against the two sides of the plate 3, so as to limit the displacement of the plate 3 along the width direction of the shearing machine 4.

[0071] Further, as Figure 7 shown, a limiting part 2044 is arranged on the side of the support rod 2042 away from the pressing wheel 2043, and the limiting part 2044 and the pressing wheel 2043 limit the support rod 2042 from coming out of the seat body 2041. An elastic member 2045 is further arranged between the limiting part 2044 and the seat body 2041. When the pressing wheel 2043 abuts against the plate 3, the elastic member 2045 is compressed and stored. The elastic member 2045 is a telescopic spring. By setting the elastic force of the elastic member 2045, the pressure of the pressing wheel 2043 abutting against the plate 3 can be set, and the damage caused by the abutment of the pressing wheel 2043 against the plate 3 can be avoided.

[0072] As Figure 7 shown, a plurality of pressing wheels 2043 are arranged in sequence and at intervals along the feeding direction of the plate 3. The plurality of pressing wheels 2043 abut against the two sides of the plate 3, which can improve the contact area between the locking assembly 204 and the plate 3, and improve the positioning effect.

[0073] The plate shearing positioning device of the present embodiment is arranged at the feeding end of the shearing machine. The working process is as follows:

[0074] Firstly, the plate 3 is conveyed to between the first positioning assembly 1 and the second positioning assembly 2 by the transmission, and the plate 3 is stopped from conveying when the end of the plate 3 exceeds the locking assembly 204. Then, the third driving part 2035 is started to drive the two locking assemblies 204 to approach the two sides of the plate 3 and lock the plate 3. The first driving part 201 is started to drive the second transmission assembly 203 and the locking part to move to the lower end of the plate shearing machine together with the plate 3, and when the shearing position of the plate 3 is located between the upper shear blade and the lower shear blade, the second driving part 102 is started to drive the pressing roller 103 to move to the plate 3. After the plate 3 is locked, the plate shearing machine is cut.

[0075] After the plate 3 is cut, the second driving part 102 is lifted, the plate 3 is continuously conveyed for a distance, the second driving part 102 is pressed down to be subtracted, and at this time, the locking assembly 204 is always kept at the two ends of the plate 3 until the plate is cut.

[0076] When the new plate 3 is replaced, the third driving part 2035 drives the locking assembly 204 to move away from the plate 3, the first driving part 201 drives the locking assembly 204 to move to the first positioning assembly 1 to return to the initial position, and the above steps are repeated.

[0077] The plate shearing positioning device of the embodiment drives the two locking assemblies 204 to approach and abut on the plate 3 by the second transmission assembly 203 to limit the displacement of the plate 3 in the width direction, and drives the locking assembly 204 to move to the shearing machine 4 after locking the plate 3 by the first driving part 201, so that the plate 3 is prevented from moving during the conveying process. Not only the position accuracy of the plate 3 is increased, but also the parallelism of the two ends of the plate 3 is effectively ensured, and the cutting quality of the plate 3 is improved.

[0078] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A medium and thick plate shear positioning device, characterized by: It comprises a first positioning component (1) provided at the feeding end of a shearing machine (4), and a second positioning component (2) provided at the lower end of the first positioning component (1); The plate (3) is transported through the first positioning assembly (1) and the second positioning assembly (2); The first positioning component (1) is used to limit the displacement of the plate (3) in the up and down directions; The second positioning assembly (2) comprises a first driving portion (201), a first transmission assembly (202) for transmitting along the direction of the plate (3), a second transmission assembly (203) for transmitting along the width direction of the plate (3), and a locking assembly (204) provided on the second transmission assembly (203); The second transmission component (203) drives the two locking components (204) to move closer to or farther from the two ends of the plate (3), and the second transmission component (203) is used to limit the displacement of the plate (3) in the width direction; The first driving part (201) drives the second transmission component (203) and the locking component (204) to move back and forth along the feeding direction of the plate (3).

2. The medium plate shearing and positioning device according to claim 1, characterized in that: The first positioning assembly (1) comprises a first frame (101), a second driving portion (102) provided on the first frame (101), a pressing roller (103) provided at a power output end of the second driving portion (102), and a receiving roller (104) pivotally connected to the first frame (101); The receiving roller (104) is arranged directly below the pressing roller (103), and the plate (3) passes between the receiving roller (104) and the pressing roller (103).

3. The medium plate shearing and positioning device according to claim 2, characterized in that: The first transmission component (202) comprises a second frame (2021), a driving roller (2022) and a driven roller (2023) pivotally connected to two ends of the second frame (2021), and a first transmission belt (2024) sleeved on the driving roller (2022) and the driven roller (2023); The power output end of the first driving unit (201) is connected to the active roller (2022), and the first driving unit (201) drives the first transmission belt (2024) to transmit motion; The two first transmission belts (2024) are arranged at both ends of the active roller (2022) and the driven roller (2023), and the second transmission component (203) is fixed on the two first transmission belts (2024) via a mounting plate (2025); The mounting plate (2025) is extended along the width direction of the plate (3); The second frame (2021) is arranged inside the first frame (101), and the first driving part (201) drives the second transmission component (203) to move from the first positioning component (1) to the shearing machine (4).

4. The medium plate shearing and positioning device according to claim 3, characterized in that: The second transmission component (203) has the same transmission speed as the plate (3).

5. The medium plate shearing and positioning device according to claim 3, characterized in that: The second transmission assembly (203) comprises a first sprocket (2031) and a second sprocket (2032) pivotally connected to both ends of the mounting plate (2025), a second transmission belt (2033) meshedly connected to the first sprocket (2031) and the second sprocket (2032), and a support seat (2034) for supporting the locking assembly (204); The mounting plate (2025) is further provided with a third driving part (2035) for driving the second transmission belt (2033) to transmit motion, and a power output end of the third driving part (2035) is connected to the first sprocket (2031); The two support seats (2034) are spaced apart and arranged on the left and right sides of the second conveyor belt (2033), and the two support seats (2034) are arranged opposite to each other along the width direction of the second frame (2021).

6. The medium plate shearing and positioning device according to claim 5, characterized in that: A fixing plate (2036) is provided on one side of the second conveyor belt (2033) opposite to the support seat (2034), and adjacent ends of the fixing plate (2036) and the support seat (2034) are respectively provided with grooves with one end open, and the two grooves form an accommodating cavity for accommodating the second conveyor belt (2033), and the fixing plate (2036) and the support seat (2034) are fixedly connected to the second conveyor belt (2033) by bolts.

7. The medium plate shearing and positioning device according to claim 6, characterized in that: The locking assembly (204) comprises a seat body (2041) connected to the support seat (2034), a support rod (2042) slidably connected to the seat body (2041), and at least one pressing wheel (2043) connected to one end of the support rod (2042) close to the plate (3); The pressing wheel (2043) is pivotally connected to the support rod (2042), and the support rod (2042) is inserted into the seat body (2041) along the width direction of the plate (3); When the third driving part (2035) drives the two supporting seats (2034) to approach the center of the plate (3), the pressing wheel (2043) abuts against both sides of the plate (3) to limit the displacement of the plate (3) along the width direction of the shearing machine (4).

8. The medium plate shearing and positioning device according to claim 7, characterized in that: A limiting portion (2044) is provided on a side of the support rod (2042) away from the pressing wheel (2043), and the limiting portion (2044) and the pressing wheel (2043) limit the support rod (2042) from escaping from the seat (2041); An elastic member (2045) is further provided between the limiting portion (2044) and the seat body (2041); when the pressing wheel (2043) abuts against the plate (3), the elastic member (2045) is compressed to store energy.

9. The medium plate shearing and positioning device according to claim 7, characterized in that: The plurality of pressing wheels (2043) are sequentially arranged at intervals along the feeding direction of the plate (3).

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