Laser plate cutting machine for car hopper plate production

Abstract

The utility model relates to a laser plate cutting machine for car hopper plate production. Comprising two groups of guide mounting seats which are oppositely arranged, an X-direction transverse moving frame is slidably connected between the two groups of guide mounting seats, and an X-direction moving device is mounted on the X-direction transverse moving frame; a laser cutting head capable of moving in the Y direction and moving longitudinally is installed on the X-direction transverse moving frame. The workbench device is arranged between the two groups of guide mounting seats; a plurality of groups of pressing plate positioning devices of which the positions can be adjusted in the X direction are connected between the two groups of guide mounting seats in a sliding manner; a plate lifting device is installed on the workbench device and used for lifting a plate to be separated from the workbench device. The plate lifting device comprises multiple sets of plate lifting rotating rods rotationally connected to the workbench device, a plurality of bull eye balls distributed in the axial direction of each plate lifting rotating rod are installed on the plate lifting rotating rods, and the plate lifting device further comprises an overturning driving assembly used for driving the multiple sets of plate lifting rotating rods to rotate synchronously. And a smoke dust collecting structure is arranged on the workbench device. According to the laser cutting device, a plate can be positioned in the cutting process, the plate can be lifted after being cut, the lower surface of the plate is prevented from being scratched when the plate is moved, and meanwhile smoke generated in the laser cutting process can be effectively collected.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser cutting, in particular to a laser plate cutting machine for producing truck bed plates. Background Art

[0002] Laser cutting is a new cutting method suitable for cutting metal materials. A laser beam rapidly heats the metal at the cutting point, causing it to melt rapidly to achieve the desired cutting effect. The tricycle bed is a crucial component, located above the frame and used for loading cargo or passengers. The bed bottom is welded from multiple sheets. Therefore, the preparation of the bed often requires a laser cutter to cut the sheets to the required dimensions.

[0003] The laser cutting machine mainly includes a laser slitting device and a plate supporting device. The laser slitting device is movably mounted on the plate supporting device and its position is adjustable. The plate supporting device includes a hollow operating table on which support plates distributed in an array and having a serrated top are installed. In the actual working process, the metal plate is laid flat on the above-mentioned support plate, and the metal plate is effectively supported by the serrated top of the support plate. Then, the laser slitting device is used to cut the metal plate, effectively reducing the contact area between the workbench and the metal plate. When cutting the metal plate, the laser energy penetrates the metal plate and usually does not cause impact on the workbench, thereby effectively extending the service life of the equipment.

[0004] However, in the actual working process, it was found that the above-mentioned laser cutting machine has certain defects: first, when working, the plate to be cut is placed on the above-mentioned several support plates, and the lower surface of the plate is pressed on the serrated top of the support bar. When the cutting is completed and the plate is removed, the serrated support plate is easy to scratch the lower surface of the plate, causing damage to the plate; secondly, the above-mentioned laser cutting machine does not have a plate positioning device, and only uses the friction between the lower surface of the plate and the serrated top of the support plate to position the plate. It is difficult to ensure that the plate will not shake during laser cutting, and errors are easy to occur during cutting; finally, the above-mentioned laser cutting machine cannot effectively collect the smoke generated during laser cutting, which will cause the smoke to drift, thereby affecting the working environment and the health of the staff. Therefore, it is urgent to design a laser cutting machine for truck bed plate production to solve the above problems. Utility Model Content

[0005] This utility model addresses the technical problems existing in the prior art by providing a rationally designed laser cutting machine for truck bed sheet production. The machine can position the sheet during the cutting process and lift it after cutting to prevent scratches on the lower surface of the sheet during movement. It also effectively collects the fumes generated during laser cutting.

[0006] The utility model adopts the following technical solutions to solve the technical problems existing in the known technology: a laser plate cutting machine for producing truck bed plates comprises two sets of guide mounting seats arranged relatively to each other, an X-direction traverse frame is slidably connected between the two sets of guide mounting seats, an X-direction moving device is installed on the X-direction traverse frame, and is used to drive the X-direction traverse frame to move along the X-direction; a laser cutting head that can move along the Y-direction and longitudinally is installed on the X-direction traverse frame; a workbench device is also provided between the two sets of guide mounting seats, and is used to support the plate; a workbench device is slidably connected between the two sets of guide mounting seats. There are multiple sets of pressure plate positioning devices with adjustable positions in the X direction, which are used to press and position the plates on the workbench device; a plate lifting device is installed on the workbench device, which is used to lift the plates off the workbench device; the plate lifting device includes multiple sets of plate lifting rotating rods that are rotatably connected and distributed in parallel laterally on the workbench device, and each plate lifting rotating rod is installed with a number of bull's eye balls distributed along its axial direction, and also includes a flip driving assembly for driving the multiple sets of plate lifting rotating rods to rotate synchronously; a smoke collection structure is provided on the workbench device, which is used to centrally collect the smoke generated during the cutting process.

[0007] The advantages and positive effects of the present invention are as follows: the present invention provides a laser plate cutting machine for the production of truck bed plates, which can press and position the plates during the cutting operation by setting multiple sets of pressure plate positioning devices, thereby preventing the plates from shaking during the cutting operation and causing cutting errors; by setting a smoke collection structure, the smoke generated during the cutting process can be collected in a centralized manner to prevent the smoke from drifting into the workshop and affecting the working environment and the health of the staff; by setting a plate lifting device, the plates can be lifted after the cutting operation is completed, so that the bottom surface of the plates can be in rolling contact with the plate lifting device, thereby facilitating the staff to drag the plates and preventing the bottom surface of the plates from being scratched. The present invention can position the plates during the cutting process to avoid errors caused by the shaking of the plates during the cutting process, and can lift the plates after the cutting is completed to avoid scratching the lower surface of the plates when the plates are moved. At the same time, it can effectively collect the smoke generated during laser cutting, effectively ensuring that a large amount of smoke is not generated in the working environment.

[0008] Preferably: the flipping drive assembly includes a driving swing arm fixed to the outer end of each lifting plate rotating rod, and also includes a laterally arranged swing arm connecting plate, and each driving swing arm is pivotally connected to the swing arm connecting plate; it also includes a lifting plate driving cylinder pivotally connected to the workbench device, and the protruding end of the lifting plate driving cylinder is pivotally connected to one of the multiple groups of driving swing arms.

[0009] Preferably: it also includes a plurality of sets of edge clamping mechanisms distributed along the X direction installed on the workbench device to clamp the edges of the plate; the edge clamping mechanism includes an edge clamping mounting seat installed on the workbench device, a longitudinally arranged clamping plate cylinder is fixedly connected to the edge clamping mounting seat, an edge clamping block is installed at the protruding end of the clamping plate cylinder, and a pad corresponding to the edge clamping block is installed on the edge clamping mounting seat.

[0010] Preferably: the smoke and dust collection structure includes a material guide inclined plate installed in the inner cavity of the workbench device, and also includes a plurality of collection drawers installed on the workbench device, and the plurality of collection drawers and the material guide inclined plate are used to receive waste residue sliding down from the material guide inclined plate; it also includes an air collecting pipe installed in the inner cavity of the workbench device, a plurality of air holes are opened on the outer peripheral wall of the air collecting pipe, and also includes an air collecting pipe mouth installed on the outer wall of the workbench device and connected to the air collecting pipe.

[0011] Preferably: a Y-direction traverse seat is installed on the X-direction traverse frame, a Y-direction moving device is installed on the Y-direction traverse seat for driving the Y-direction traverse seat to move along the Y-direction, and also includes a lifting drive device installed on the Y-direction traverse seat, and a laser cutting head is installed on the lifting drive device; the Y-direction moving device includes a Y-direction guide rail and a Y-direction rack extending along the Y-direction fixed to the X-direction traverse frame, and also includes a Y-direction motor installed on the Y-direction traverse seat, and a gear meshing with the Y-direction rack is keyed to the output shaft of the Y-direction motor; the lifting drive device includes a linear electric cylinder installed on the Y-direction traverse seat, and the laser cutting head is installed at the protruding end of the linear electric cylinder.

[0012] Preferably: the X-direction moving device includes an X-direction guide rail and an X-direction rack extending along the X-direction installed on the guide mounting seat, and also includes an X-direction motor installed on the X-direction transverse frame, and a gear meshing with the X-direction rack is keyed to the output shaft of the X-direction motor.

[0013] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the top view of the structure of the utility model;

[0015] Figure 2 It is a three-dimensional structural diagram of the plate lifting device, smoke and dust collecting structure and workbench device in the utility model;

[0016] Figure 3 yes Figure 2 A magnified schematic diagram of area A;

[0017] Figure 4 It is a three-dimensional schematic diagram of a partial structure of the utility model;

[0018] Figure 5 It is a three-dimensional structural diagram of the pressure plate positioning device in the utility model.

[0019] In the figure: 1. Press plate positioning device; 1-1. Transverse plate seat; 1-2. First press plate member; 1-3. Press plate connecting rod; 1-4. Press plate head; 1-5. Second press plate member; 1-6. Buffer spring; 1-7. Lifting guide rod; 1-8. Lifting mounting seat; 1-9. Positioning top plate; 1-10. Press head mounting rod; 1-11. Lifting drive cylinder; 2. Lifting device; 2-1. Driving swing arm; 2-2. Swing arm connecting plate; 2-3. Lifting drive cylinder; 2-4. Bull's eye ball; 2-5. Lifting rotating rod; 3. Smoke and dust collection structure; 3-1. Gas collecting pipe port; 3-2. Material guide inclined plate; 3-3. Gas collecting Tube; 3-4, collection drawer; 4, Y-direction moving device; 4-1, Y-direction guide rail; 4-2, Y-direction motor; 4-3, Y-direction rack; 5, Y-direction transverse seat; 6, lifting drive device; 7, X-direction transverse frame; 8, X-direction moving device; 8-1, X-direction guide rail; 8-2, X-direction rack; 8-3, X-direction motor; 9, guide mounting seat; 10, workbench device; 10-1, first plug-in plate; 10-2, second plug-in plate; 10-3, frame structure; 10-4, support vertical plate; 11, edge clamping mechanism; 11-1, clamping plate cylinder; 11-2, edge clamping mounting seat; 11-3, edge clamping block. DETAILED DESCRIPTION

[0020] In order to further understand the content, features and effects of the present invention, the following embodiments are given to explain in detail:

[0021] See Figure 1 The laser cutting machine for producing truck bed plates of the present invention includes two sets of guide mounting seats 9 arranged relatively to each other, an X-direction transverse frame 7 is slidably connected between the two sets of guide mounting seats 9, an X-direction moving device 8 is installed on the X-direction transverse frame 7, which is used to drive the X-direction transverse frame 7 to move along the X-direction; a laser cutting head that can move along the Y-direction and longitudinally is installed on the X-direction transverse frame 7.

[0022] like Figure 1 As shown, a Y-direction traverse seat 5 is mounted on the X-direction traverse frame 7, and a Y-direction moving device 4 is mounted on the Y-direction traverse seat 5 for driving the Y-direction traverse seat 5 to move along the Y direction. The system also includes a lifting drive device 6 mounted on the Y-direction traverse seat 5, and a laser cutting head is mounted on the lifting drive device 6. Figure 4 As shown, the Y-movement device 4 includes a Y-guide rail 4-1 and a Y-rack 4-3 fixed to an X-transverse frame 7, extending in the Y direction. It also includes a Y-motor 4-2 mounted on a Y-transverse base 5. A gear meshing with the Y-rack 4-3 is keyed to the output shaft of the Y-motor 4-2. The lifting drive device 6 includes a linear electric cylinder mounted on the Y-transverse base 5, with the laser cutting head mounted on the extended end of the linear electric cylinder. A protective cover is mounted on the Y-transverse base 5 to cover the laser cutting head.

[0023] like Figure 4 As shown, the above-mentioned X-direction moving device 8 includes an X-direction guide rail 8-1 and an X-direction rack 8-2 extending along the X-direction installed on the guide mounting seat 9, and also includes an X-direction motor 8-3 installed on the X-direction transverse frame 7, and a gear meshing with the X-direction rack 8-2 is keyed to the output shaft of the X-direction motor 8-3.

[0024] like Figure 1 As shown, this embodiment includes a workbench device 10 arranged between two sets of guide mounting seats 9 for supporting the plate. Figure 2 and Figure 4 As shown, the above-mentioned workbench device 10 includes a hollow frame structure 10-3, and a plurality of first plug boards 10-1 and a plurality of second plug boards 10-2 that are vertically arranged and plugged together are installed at the open part of the frame structure 10-3. It also includes a plurality of supporting vertical plates 10-4 that are plugged together on the plurality of second plug boards 10-2 and are used to support the panels. The top of each supporting vertical plate 10-4 is serrated.

[0025] like Figure 1 As shown, multiple groups of pressure plate positioning devices 1 with adjustable positions in the X direction are slidably connected between the two groups of guide mounting seats 9, which are used to press and position the panels on the workbench device 10; two groups of pressure plate positioning devices 1 are provided, and the two groups of pressure plate positioning devices 1 are respectively located on both sides of the X-direction transverse frame 7.

[0026] like Figure 5 As shown, the above-mentioned pressure plate positioning device 1 includes two groups of relatively arranged transverse plate seats 1-1, and the two groups of transverse plate seats 1-1 are slidably connected to the X-guide rail 8-1 through sliders, and multiple groups of longitudinally arranged lifting guide rods 1-7 are fixedly connected to each transverse plate seat 1-1, and a positioning top plate 1-9 that spans the workbench device 10 is installed between the multiple groups of lifting guide rods 1-7. A longitudinally arranged lifting drive cylinder 1-11 is installed on the positioning top plate 1-9, and a lifting mounting seat 1-8 that is slidably connected to the lifting guide rod 1-7 is installed at the protruding end of the lifting drive cylinder 1-11. The lifting mounting seat 1-8 is slidably connected to the multiple groups of lifting guide rods 1-7 through linear bearings.

[0027] A plurality of first pressure plate members 1-2 and a plurality of second pressure plate members 1-5 are installed on the lifting mounting seat 1-8 through a plurality of pressure plate connecting rods 1-3, and each pressure plate connecting rod 1-3 passes through the lifting mounting seat 1-8 and is slidably connected thereto, and a buffer spring 1-6 is passed through each pressure plate connecting rod 1-3; the pressure plate positioning device 1 also includes a plurality of pressure head mounting rods 1-10 passed through the lifting mounting seat 1-8 and slidably matched therewith, and each pressure head mounting rod 1-10 passes through the corresponding second pressure plate member 1-5 and is then installed with a pressure plate head 1-4, the bottom surface of the pressure plate head 1-4 is arc-shaped, and in addition, a buffer spring 1-6 is sleeved on the pressure head mounting rod 1-10; the pressure plate positioning device 1 also includes a driving motor installed on the transverse plate seat 1-1, and a gear meshing with the X-axis rack 8-2 is keyed to the output shaft of the driving motor. When the plate to be cut is a plate with a corrugated structure, the pressing plate heads 1-4 in the above-mentioned pressing plate positioning device 1 can press and clamp the concave part of the plate.

[0028] like Figure 1 As shown, this embodiment further includes a plurality of edge clamping mechanisms 11 distributed along the X direction installed on the workbench device 10 to clamp the edges of the plate; Figure 3 As shown, the edge clamping mechanism 11 includes an edge clamping mounting base 11-2 mounted on the workbench device 10. A longitudinally arranged clamping plate cylinder 11-1 is fixedly connected to the edge clamping mounting base 11-2. A clamping block 11-3 is mounted on the protruding end of the clamping plate cylinder 11-1. A pad corresponding to the edge clamping block 11-3 is mounted on the edge clamping mounting base 11-2. The lifting and lowering edge clamping block 11-3 cooperates with the pad to clamp and position the edge of the plate. It is worth noting that the edge clamping mechanism 11 can only be used to clamp the edge of the plate when the width of the plate reaches a certain degree.

[0029] like Figure 1 As shown, a plate lifting device 2 is installed on the workbench device 10 for lifting the plate off the workbench device 10; see further Figure 2 and Figure 3 The above-mentioned plate lifting device 2 includes multiple groups of plate lifting rotating rods 2-5 that are rotatably connected on the workbench device 10 and distributed in parallel laterally. Each plate lifting rotating rod 2-5 is installed with a number of bull's eye balls 2-4 distributed along its axial direction. Each plate lifting rotating rod 2-5 is installed with a rod member arranged along its axial direction, and the corresponding bull's eye balls 2-4 are screwed and installed on the corresponding rod member, wherein the axial direction of the above-mentioned plate lifting rotating rod 2-5 is the X direction.

[0030] The plate lifting device 2 also includes a flip driving assembly for driving multiple sets of plate lifting rods 2-5 to rotate synchronously; Figure 3As shown, the above-mentioned flipping drive assembly includes a driving swing arm 2-1 fixed to the outer end of each lifting plate rotating rod 2-5, and also includes a laterally arranged swing arm connecting plate 2-2, and each driving swing arm 2-1 is pivotally connected to the swing arm connecting plate 2-2; it also includes a lifting plate driving cylinder 2-3 pivotally connected to the workbench device 10, and the protruding end of the lifting plate driving cylinder 2-3 is pivotally connected to one of the multiple groups of driving swing arms 2-1.

[0031] like Figure 1 As shown, a smoke collecting structure 3 is provided on the workbench device 10 for centrally collecting the smoke generated during the cutting process.

[0032] See further Figure 2 The smoke and dust collection structure 3 includes a material guide ramp 3-2 installed within the inner cavity of the workbench assembly 10, and multiple sets of collection drawers 3-4 plugged into the workbench assembly 10. The multiple sets of collection drawers 3-4 correspond to the material guide ramp 3-2 and are used to receive waste residue that slides down from the material guide ramp 3-2. The smoke and dust collection structure 3 also includes a gas collection pipe 3-3 installed within the inner cavity of the workbench assembly 10, with a plurality of air holes formed in the outer peripheral wall of the gas collection pipe 3-3. It also includes a gas collection pipe port 3-1 installed on the outer wall of the workbench assembly 10 and connected to the gas collection pipe 3-3. During actual operation, a gas pipeline is installed on the gas collection pipe port 3-1, and a fan is installed on the gas pipeline.

[0033] Working principle:

[0034] In the actual working process, the plate to be cut is placed at a suitable position on the workbench device 10, and the lifting drive cylinder 1-11 is started to drive the lifting mounting seat 1-8 and multiple groups of first pressing plate members 1-2 and multiple groups of second pressing plate members 1-5 to move downward, thereby pressing the plate onto the workbench device 10 to achieve the positioning operation; the laser cutting head is moved in space by the provided X-direction moving device 8, Y-direction moving device 4 and lifting drive device 6, thereby performing the cutting operation on the plate positioned by the pressing plate positioning device 1;

[0035] During the cutting operation, the smoke generated by the cutting enters the gas collecting pipe 3-3 under the action of the fan. The generated smoke is collected under the guidance of the gas collecting pipe 3-3 to prevent the smoke from drifting and affecting the working environment of the workshop and the health of the workers.

[0036] After the cutting operation is completed, the piston rod of the lifting drive cylinder 1-11 is retracted to release the pressing and positioning of the plate, and then the lifting plate drive cylinder 2-3 is started to drive each driving swing arm 2-1 to swing, and then drive multiple sets of lifting plate rotating rods 2-5 to rotate synchronously, so that the bull's eye ball 2-4 in the horizontal state is flipped to the vertical state, and then the plate on which the cutting operation is completed is lifted. The bottom surface of the plate is in rolling contact with the bull's eye ball 2-4, which makes it convenient for the staff to drag the plate and avoids the bottom surface of the plate from being scratched, thereby realizing the unloading operation; after the unloading operation is completed, the lifting plate drive cylinder 2-3 is started to drive multiple sets of lifting plate rotating rods 2-5 to flip and reset, so that multiple sets of bull's eye balls 2-4 are flipped to the horizontal state.

Claims

1. A laser cutting machine for producing truck bed sheet materials, characterized by: The invention comprises two sets of guide mounting seats (9) arranged opposite to each other, an X-direction traverse frame (7) being slidably connected between the two sets of guide mounting seats (9), an X-direction moving device (8) being installed on the X-direction traverse frame (7) for driving the X-direction traverse frame (7) to move in the X-direction; a laser cutting head which can move in the Y-direction and longitudinally is installed on the X-direction traverse frame (7); a workbench device (10) being arranged between the two sets of guide mounting seats (9) for supporting a plate; and a plurality of sets of pressure plate positioning devices (1) which can be adjusted in the X-direction position are slidably connected between the two sets of guide mounting seats (9) for adjusting the workbench device (10). 0) is pressed and positioned; a plate lifting device (2) is installed on the workbench device (10) for lifting the plate and separating it from the workbench device (10); the plate lifting device (2) includes a plurality of plate lifting rotating rods (2-5) that are rotatably connected and laterally arranged in parallel on the workbench device (10), and each plate lifting rotating rod (2-5) is installed with a plurality of bull's eye balls (2-4) distributed along its axial direction, and also includes a flip driving component for driving the plurality of plate lifting rotating rods (2-5) to rotate synchronously; a smoke collecting structure (3) is provided on the workbench device (10) for centrally collecting smoke generated during the cutting process.

2. The laser cutting machine for producing truck bed sheet materials according to claim 1, characterized in that: The flip drive assembly includes a driving swing arm (2-1) fixed to the outer end of each lifting plate rotating rod (2-5), and also includes a laterally arranged swing arm connecting plate (2-2), and each driving swing arm (2-1) is pivotally connected to the swing arm connecting plate (2-2); and also includes a lifting plate driving cylinder (2-3) pivotally connected to the workbench device (10), and the protruding end of the lifting plate driving cylinder (2-3) is pivotally connected to one of the multiple groups of driving swing arms (2-1).

3. The laser cutting machine for producing truck bed sheet materials according to claim 1, characterized in that: The invention also includes a plurality of edge clamping mechanisms (11) installed on the workbench device (10) and distributed along the X direction to clamp the edge of the plate; the edge clamping mechanism (11) includes an edge clamping mounting seat (11-2) installed on the workbench device (10), a longitudinally arranged clamping plate cylinder (11-1) is fixedly connected to the edge clamping mounting seat (11-2), an edge clamping block (11-3) is installed at the protruding end of the clamping plate cylinder (11-1), and a pad corresponding to the edge clamping block (11-3) is installed on the edge clamping mounting seat (11-2).

4. The laser cutting machine for producing truck bed sheet materials according to claim 1, characterized in that: The smoke and dust collecting structure (3) includes a material guide inclined plate (3-2) installed in the inner cavity of the workbench device (10), and also includes a plurality of collection drawers (3-4) plugged and installed on the workbench device (10), and the plurality of collection drawers (3-4) are used to receive waste residue sliding down from the material guide inclined plate (3-2) relative to the material guide inclined plate (3-2); and also includes a gas collecting pipe (3-3) installed in the inner cavity of the workbench device (10), a plurality of air holes are opened on the outer peripheral wall of the gas collecting pipe (3-3), and also includes a gas collecting pipe port (3-1) installed on the outer wall of the workbench device (10) and connected to the gas collecting pipe (3-3).

5. The laser cutting machine for producing truck bed sheet materials according to claim 1, characterized in that: A Y-direction traverse seat (5) is mounted on the X-direction traverse frame (7), a Y-direction moving device (4) is mounted on the Y-direction traverse seat (5) for driving the Y-direction traverse seat (5) to move in the Y direction, and a lifting drive device (6) is mounted on the Y-direction traverse seat (5), and a laser cutting head is mounted on the lifting drive device (6); the Y-direction moving device (4) includes a Y-direction guide rail (4-1) and a Y-direction rack (4-3) fixedly connected to the X-direction traverse frame (7) and extending in the Y direction, and also includes a Y-direction motor (4-2) mounted on the Y-direction traverse seat (5), and a gear meshing with the Y-direction rack (4-3) is keyed to the output shaft of the Y-direction motor (4-2); the lifting drive device (6) includes a linear electric cylinder mounted on the Y-direction traverse seat (5), and the laser cutting head is mounted on the protruding end of the linear electric cylinder.

6. The laser cutting machine for producing truck bed sheet materials according to claim 1, characterized in that: The X-direction moving device (8) comprises an X-direction guide rail (8-1) and an X-direction rack (8-2) mounted on a guide mounting seat (9) and extending in the X-direction, and an X-direction motor (8-3) mounted on an X-direction traverse frame (7), wherein a gear meshing with the X-direction rack (8-2) is keyed to the output shaft of the X-direction motor (8-3).

7. The laser cutting machine for producing truck bed sheet materials according to claim 6, characterized in that: The pressure plate positioning device (1) comprises two groups of transverse plate seats (1-1) arranged opposite to each other, both groups of transverse plate seats (1-1) are slidably connected to the X-guide rail (8-1) through a slider, multiple groups of longitudinally arranged lifting guide rods (1-7) are fixedly connected to each transverse plate seat (1-1), a positioning top plate (1-9) across the workbench device (10) is installed between the multiple groups of lifting guide rods (1-7), a longitudinally arranged lifting drive cylinder (1-11) is installed on the positioning top plate (1-9), a lifting mounting seat (1-8) slidably connected to the lifting guide rod (1-7) is installed at the protruding end of the lifting drive cylinder (1-11), and multiple groups of first pressure plate members (1-2) are installed on the lifting mounting seat (1-8) through multiple pressure plate connecting rods (1-3). and multiple groups of second pressing plate members (1-5), each pressing plate connecting rod (1-3) passes through the lifting mounting seat (1-8) and is slidably connected thereto, and a buffer spring (1-6) is provided on each pressing plate connecting rod (1-3); it also includes multiple groups of pressure head mounting rods (1-10) that are provided on the lifting mounting seat (1-8) and slidably matched therewith, each pressure head mounting rod (1-10) is provided with a pressure plate head (1-4) after passing through the corresponding second pressing plate member (1-5), the bottom surface of the pressure plate head (1-4) is in an arc shape, and a buffer spring (1-6) is sleeved on the pressure head mounting rod (1-10); it also includes a driving motor installed on the transverse plate seat (1-1), and a gear meshing with the X-axis rack (8-2) is key-connected to the output shaft of the driving motor.

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