Laser cutting machine, magnetic block clamping device used therein, and clamping method

Abstract

In view of the deficiencies in the prior art that when a magnetic block is laser-cut and pressed from above the magnetic block, the pressing device occupies a large area of the magnetic block, reducing the utilization area of the magnetic block and causing waste of raw materials, the present invention provides a laser cutting machine, a magnetic block clamping device and a clamping method used therefor. The device includes a first clamping plate and a second clamping plate arranged side by side. A first support structure is arranged on the inner sides of the first clamping plate and the second clamping plate. The two side edges of the lower part of the magnetic block are arranged on the first support structure. The first clamping plate and the second clamping plate clamp the magnetic block from two opposite side surfaces of the magnetic block. When the device and method provided by the present invention are used to clamp the magnetic block, since the first support structure is narrow and supports the magnetic block from below the magnetic block, and the clamping plates clamp the magnetic block from the side, the area above the magnetic block is completely exposed, increasing the cutting area, improving the discharging rate of the magnetic block, and saving the raw material cost.

Description

Technical Field

[0001] The present invention relates to the field of laser cutting, and particularly to a laser cutting machine, a magnetic block clamping device used therein, and a clamping method. Background Art

[0002] Using a laser cutting machine to cut magnetic blocks is one of the methods for cutting magnetic blocks in the current market. When using laser cutting, it is necessary to fix the magnetic blocks, and the laser penetrates the magnetic blocks to cut them into the required shapes. This requires that there are no obstacles above and below the laser cutting area of the magnetic blocks. Otherwise, the laser cannot cut through the magnetic blocks. In the prior art, when fixing the magnetic blocks, the commonly used fixing method is to set a pressing device above the magnetic blocks, and through the pressing device, the two side edges above the magnetic blocks are pressed to keep the magnetic blocks stable. However, this pressing method occupies a relatively wide edge on the upper surface of the magnetic blocks. The laser can only cut the middle part of the magnetic blocks, and the edges of the magnetic blocks pressed cannot be cut. At the same time, the laser head also needs to avoid the pressing device above the magnetic blocks, which further reduces the effective utilization area of the magnetic blocks, resulting in a decrease in the utilization rate of the magnetic blocks and the discharge rate, and causing waste of raw materials. To solve the above technical problems, people in this field have conducted extensive research and experiments, but they are unable to solve the problem of the pressing device occupying the area of the magnetic blocks. Summary of the Invention

[0003] The object of the present invention is to provide a magnetic block clamping device and a clamping method for a laser cutting machine, aiming at the deficiencies in the prior art that when pressing the magnetic blocks from above, the pressing device occupies a relatively wide edge of the magnetic blocks, the laser cannot cut the pressed part, and at the same time, the laser head avoids the pressing device, which further reduces the utilization area of the magnetic blocks, thus causing waste of raw materials.

[0004] The object of the present invention is achieved by the following technical solutions:

[0005] A magnetic block clamping device for a laser cutting machine includes a first clamping plate and a second clamping plate arranged side by side. At least at positions corresponding to the positions where the magnetic blocks are clamped, a first supporting structure for supporting the magnetic blocks is respectively arranged on the inner sides of the first clamping plate and the second clamping plate. The height of the first supporting structure is lower than the upper surfaces of the first clamping plate and the second clamping plate, and the length is adapted to the length of the magnetic blocks. The distance between the inner sides of the first clamping plate and the second clamping plate is adapted to the width of the magnetic blocks;

[0006] At least an elastic clamping member is fixedly arranged on the clamping working surface of the second clamping plate. The elastic clamping member is located above the first supporting structure and corresponds to the position where the magnetic blocks are clamped;

[0007] When an elastic clamping member is provided on the clamping working surface of one clamping plate, the clamping working surface on the other clamping plate is a rigid surface; the elastic clamping member includes a plurality of spring pieces, the plurality of spring pieces are arranged in parallel, the root of the spring piece is fixedly connected to the inner surface of the second clamping plate, the head of the spring piece faces the magnet to be clamped, and the included angle between the extending direction of the spring piece and the side surface of the magnet to be clamped is an acute angle; the width of the root of the spring piece is smaller than the width of the end, and the end of the spring piece is arranged in an arc shape;

[0008] Long circular holes are provided on the plates of the first clamping plate and the second clamping plate, and the first clamping plate and the second clamping plate move in the direction of approaching or separating from each other through the long circular holes;

[0009] A second support structure for supporting the magnet is further provided inside the first clamping plate and the second clamping plate. The first support structure and the second support structure are arranged front and back. The upper surface of the second support structure is flush with the upper surface of the first support structure, and the width of the second support structure is greater than the width of the first support structure;

[0010] The first clamping plate and the second clamping plate are respectively arranged above the lining plate. The first support structure and the second support structure are both located inside the lining plate. Long circular holes are provided at positions on the two lining plates corresponding to the positions of the long circular holes on the first clamping plate and the second clamping plate;

[0011] A laser cutting machine includes a magnet conveying device, a clamping device, a feeding device and a cutting device. The cutting device includes a laser head. The laser head of the cutting device is arranged above the first support structure, and the magnet on the first support structure is cut through the laser head. The feeding device includes a bracket for supporting the magnet. Using the magnet clamping device of any one of the above, the supporting device of the feeding device is arranged between the conveying device and the magnet clamping device, and the magnet is conveyed from the bracket to the first support structure by the magnet conveying device;

[0012] In the above laser cutting machine, the magnet conveying device includes a pushing cylinder and a pushing rod. One end of the pushing rod is connected to the output end of the pushing cylinder, and the other end is the pushing end. The length direction of the pushing rod is the same as the length direction of the magnet to be clamped. The height of the lower surface of the pushing rod is adapted to the height of the upper surfaces of the first clamping plate and the second clamping plate. A positioning structure is provided on the lower surface of the pushing rod. The positioning surface of the positioning structure is perpendicular to the lower surface of the pushing rod, the positioning surface faces the pushing end, the surface between the positioning surface and the end surface of the pushing end is the pressing surface, the length of the pressing surface is adapted to the length of the magnet, and the height of the positioning surface above the pressing surface is adapted to the thickness of the magnet. The magnet is pushed from the bracket to the second support structure and / or the first support structure through the pushing end of the pushing rod;

[0013] A method for clamping a magnetic block used in a laser cutting machine, where the magnetic block is placed between a first clamping plate and a second clamping plate. The lower two side edges of the magnetic block are supported by relatively narrow supporting structures located inside the first clamping plate and the second clamping plate. The first clamping plate and the second clamping plate clamp the magnetic block from two opposite sides of the magnetic block. The width of the supporting structure is preferably 0.3 - 1.0 mm;

[0014] In the above method for clamping a magnetic block used in a laser cutting machine, at least one side surface of the magnetic block is clamped by an elastic clamping member, and the other side surface is supported by a rigid surface, or both opposite side surfaces of the magnetic block are clamped by elastic clamping members; the magnetic block is pushed from one end of the two clamping plates to the clamping position between the two clamping plates and is clamped.

[0015] By using the laser cutting machine and the magnetic block clamping device used therein provided by the present invention, the magnetic block is placed between the first clamping plate and the second clamping plate arranged side by side, and the first clamping plate and the second clamping plate squeeze the magnetic block from both sides of the magnetic block to clamp and fix the magnetic block. Since the clamping device is located on both sides of the magnetic block, in this way, the area above the magnetic block is completely exposed. During cutting, the laser head can freely run above the magnetic block, maximizing the utilization rate of the magnetic block;

[0016] Also, since narrow supporting structures I are provided on both side surfaces of the first clamping plate and the second clamping plate, the area between the two supporting structures I is the cutting area of the magnetic block. The lower two side edges of the magnetic block are placed on the relatively narrow supporting structures I to prevent the magnetic block from falling. The supporting structure I only plays a supporting role for the magnetic block and does not hinder the cutting of the laser. The present invention adopts a pure mechanical structure, and clamps the magnetic block tightly from both sides of the magnetic block through a rigid surface and an elastic clamping member, making the magnetic block stable. The structure of the present invention is simple, easy to operate, improves the discharging rate of the magnetic block, and saves the raw material cost.

[0017] Furthermore, an elastic clamping member is also provided on the clamping working surface of the second clamping plate. The elastic clamping member can adapt to the shape of the side surface of the magnetic block, better fit with the side surface of the magnetic block, and make the clamping of the magnetic block more firm; when the side surface of the magnetic block is a curved surface or an irregular shape, it can adapt to different edge conditions, smoothly push the magnetic block into the clamping position, and position it.

[0018] By using the method of the present invention to clamp the magnetic block, the magnetic block is squeezed between the two clamping plates and supported by a narrow supporting structure. Therefore, there is no need to use a pressing block to press the magnetic block, reducing the area occupied by the pressing device on the magnetic block and increasing the effective utilization area of the magnetic block. Description of the Drawings

[0019] Figure 1 Is a three-dimensional view of the laser cutting machine of the present invention;

[0020] Figure 2 Is a three-dimensional view of the magnetic block clamping device used in the laser cutting machine of the present invention;

[0021] Figure 3 This is a perspective view of the pusher rod in the present invention.

[0022] Description of the reference numerals

[0023] 11. Pusher rod; 12. Pushing cylinder; 111. Pressing surface; 112. Positioning surface; 13. Connecting piece; 14. Guide block; 21. Loading cylinder; 22. Loading bin; 23. Bracket; 31. Clamping plate one; 32. Clamping plate two; 33. Support structure one; 34. Long circular hole; 35. Support structure two; 36. Spring piece; 37. Clamping working surface one; 38. Clamping working surface two; 39. Lining plate; 40. Laser head; 51. Blanking plate; 52. Receiving plate; 60. Magnet; 70. Machine frame; 80. Sensor. Detailed implementation manners

[0024] The present invention will be further described below in conjunction with specific embodiments:

[0025] For the convenience of description, in the present invention, the direction in which the clamping plate one and the clamping plate two are arranged is called the width direction, and the direction perpendicular to the width direction is called the length direction. The direction consistent with the forward direction of the material during material conveyance is called the front, and the direction perpendicular to the forward direction of the material is called left and right. The direction of the clamping plate consistent with the front and back direction is called the length direction, and the left and right direction of the clamping plate is called the width direction. The opposite side surfaces of the clamping plate one 31 and the clamping plate two 32 are called the inner surfaces.

[0026] As Figures 1 - 3 shown, the laser cutting machine of the embodiment structure of the present invention includes a conveying device for conveying the magnet to the clamping position, a clamping device for fixing the magnet during cutting, a loading device for sending the magnet to the conveying position, a cutting device for cutting the magnet, and a blanking device.

[0027] The clamping device includes two horizontally arranged clamping plates side by side, namely the clamping plate one 31 and the clamping plate two 32. The clamping plate one 31 and the clamping plate two 32 are arranged side by side, and there is a certain distance between the two clamping plates for clamping the magnet 60. At least two long circular holes 34 are respectively arranged on the plate surfaces of the two clamping plates. The clamping plates are fixedly connected to the machine frame 70 of the cutting machine through the long circular holes 34 and connecting bolts. The distance between the two clamping plates can be adjusted through the long circular holes 34, so as to adjust the distance between the two clamping plates to adapt to magnets with different side spacings. The long circular hole can be a long circular hole with semi-circles arranged on both sides, or a long circular hole with a semi-circle arranged on one side and an opening on the other side. The long circular holes are arranged side by side along the edge of the outer side of each clamping plate.

[0028] On the opposite sides of the first clamping plate 31 and the second clamping plate 32, that is, on the inner sides, there are respectively provided a first support structure 33 for supporting the magnetic block, and the first support structure 33 is provided at least on the inner side corresponding to the clamping position of the magnetic block. The top of the first support structure is a plane or the top of the first support structure forms a plane, and the height is lower than the upper surface of the clamping plate. The first support structure can be a plurality of support rods or combs arranged side by side, or can also be a plane. In the present invention, the first support structure is preferably a plane. The first support structure 33 is arranged along the inner side of the clamping plate, and the length of the first support structure 33 is equal to or slightly greater than the length of the clamped part of the magnetic block. After the magnetic block is clamped between the two clamping plates, the part of the magnetic block located between the two first support structures 33 on both sides is the cuttable width / length of the magnetic block. The parts of the inner surfaces of the two clamping plates located above the first support structure 33 participate in the clamping of the workpiece and are called clamping working surfaces. For the sake of description, the one located on the first clamping plate 31 is called the first clamping working surface 37, and the one located on the second clamping plate 32 is called the second clamping working surface 38.

[0029] Preferably, lining plates 39 are respectively arranged below the two clamping plates. The distance between the inner surfaces of the two lining plates is smaller than the distance between the inner surfaces of the two clamping plates. The part of the lining plate 39 protruding from the inner surface of the clamping plate serves as the first support structure of the magnetic block. Long circular holes 34 are arranged at the positions on the two lining plates 39 corresponding to the long circular holes on the first clamping plate 31 and the second clamping plate 32. In this way, not only can the fixed position of the long circular hole 34 be adjusted to adapt to the widths of different magnetic blocks, but also the widths of the first support structure 33 and the second support structure 35 can be adjusted.

[0030] At least one elastic clamping member is provided on the clamping working surface. The elastic clamping member can be a rubber plate, which is intermittently or continuously arranged on the clamping working surface; alternatively, a plurality of set screws with catch balls can be vertically arranged on the clamping working surface, and the catch balls protrude from the clamping working surface, and the magnet block is pressed by the top of the catch ball. In the present invention, the spring piece 36 is preferably used as the elastic clamping member, and a plurality of spring pieces 36 are evenly arranged side by side on the clamping working surface of the clamping member. The root of the spring piece 36 is fixedly connected to the clamping working surface, and the head faces the direction of the clamping magnet block. Moreover, the head of the spring piece 36 is inclined in the advancing direction of the magnet block during feeding. In a preferred structure, the head of the spring piece 36 is in the shape of a long strip or a long rod, preferably in a conical shape, the head is larger than the root, and the head of the spring piece 36 is set in an arc shape to avoid scratching the magnet block. In this way, during feeding, it can ensure that the magnet block smoothly enters the clamping position and makes it easy for the spring piece to contact and clamp the magnet block. After the magnet block enters the clamping position, the heads of a plurality of spring pieces 36 contact the side surface of the magnet block and press the magnet block, forming multi-position pressing on the magnet block. After each spring piece 36 is pressed, the root generates the same or different elastic deformations. Preferably, an elastic clamping member is provided on one of the clamping working surfaces. For example, an elastic clamping member is provided on the clamping working surface two. With the above structure, the clamping working surface one provides a rigid support for the magnet block, guides and positions the magnet block when it moves into the clamping area. When the magnet block advances, the elastic clamping member located on the clamping working surface two is pushed by the magnet block towards the clamping plate two. On the one hand, it makes way for the magnet block, and on the other hand, it provides pressure on the magnet block, applying pressure to the side surface of the magnet block, which can ensure that the magnet block is smoothly clamped between the two clamping plates, provides a certain degree of clamping tightness, and can ensure that the position of the magnet block remains basically unchanged after being clamped, facilitating positioning and wire routing during cutting. To increase the utilization area of the magnet block and reduce the area of the magnet block occupied by the support structure one 33, when an elastic clamping member is provided on the clamping working surface, the width H1 of the part of the support structure one exposed outside the elastic clamping member should be as small as possible, preferably 0.3 - 1.0 mm. When no elastic clamping member is provided, the width H2 of the support structure one exceeding the inner surface of the clamping plate should be as small as possible, preferably 0.3 - 1.0 mm. The distance between the clamping working surface one 37 and the clamping working surface two 38 is adjusted according to the different elastic clamping members provided, so as to ensure that the magnet block can pass between the clamping plate one and the clamping plate two and can be clamped by the elastic clamping member.

[0031] Preferably, a second support structure 35 is respectively arranged on the inner sides of the two clamping plates. The second support structure 35 is arranged at the feeding end of the clamping device. The second support structure is preferably a plane. The top surface of the second support structure 35 is arranged at the same height as the top surface of the first support structure 33. The second support structure 35 can be continuously arranged with the first support structure 33 on the inner surface of the clamping plate, or can be arranged at an interval, or can be arranged independently. During feeding, the magnet moves onto the first support structure 33 via the second support structure 35. Preferably, the width of the second support structure 35 is greater than or equal to the width of the first support structure, so as to provide a more stable support for the material during material conveying and effectively prevent the magnet from falling. When a lining plate is arranged under the clamping plate, the second support structure can be formed by the part of the lining plate protruding outside the clamping plate. That is, the inner surface spacing at the rear end of the lining plate is smaller than the inner surface spacing at the front end of the lining plate.

[0032] The magnet conveying device includes a pushing cylinder 12 and a pushing rod 11. The pushing cylinder is fixedly arranged on the frame 70. The pushing rod 11 is arranged parallel to the piston rod of the pushing cylinder 12. The cylinder body of the pushing cylinder 12 is horizontally arranged on the cutting machine. One end of the pushing rod 11 is fixedly connected to the output end of the pushing cylinder 12 through a connecting piece 13, and the other end is a pushing end, and the pushing end faces the fixed end of the pushing cylinder. The lower surface of the pushing rod 11 is a stepped surface. The lower stepped surface corresponds to the position of the pushing end. The vertical plane connecting the two stepped surfaces is a positioning surface 112. The lower stepped surface is a material pressing surface 111. The length of the material pressing surface 111 is greater than or equal to the length of the magnet. The height of the positioning surface is equal to or slightly greater than the thickness of the magnet. During feeding, the magnet body is located below the material pressing surface 111, the material pressing surface covers above the magnet, the magnet abuts against the positioning surface, and when the pushing cylinder extends, the rear end face of the magnet is pushed forward by the positioning surface 112. Preferably, a guiding block 14 is arranged on the magnet conveying device. A guiding groove is arranged on the guiding block 14. The length direction of the guiding groove is the same as the length direction of the pushing rod. The guiding block 14 is fixedly connected to the cylinder body of the pushing cylinder 12 or fixedly connected to the frame. The pushing rod 11 passes through the guiding groove, and the pushing rod and the guiding block are slidably connected through the guiding groove. The height of the pushing rod is adapted to the height of the clamping plate. The lower surface of the pushing rod is flush with or slightly higher than the upper surface of the clamping plate. The pushing rod is arranged along the length direction of the clamping plate and is located between the two clamping plates. Preferably, the pushing rod is slidably connected to the upper surface of the frame, so that the operation is relatively stable.

[0033] The feeding device at least includes a supporting device for supporting the magnetic blocks. The supporting device is arranged between the magnetic block clamping device and the conveying device, and the magnetic blocks are arranged on the supporting device and supported by the supporting device. In the present invention, the supporting device adopts a bracket 23 or a pallet. The bracket 23 includes a horizontally arranged pallet and baffles arranged on both sides of the bracket. The baffles are perpendicularly arranged to the pallet, and the arrangement direction of the baffles is consistent with the advancing direction of the magnetic blocks. The top of the supporting device is in the same plane as the first supporting structure and the second supporting structure. To achieve automatic feeding, the feeding device further includes a feeding bin and a reciprocating driving device for the supporting device. The reciprocating driving device for the supporting device can adopt a feeding cylinder or a stepping motor. The bracket is connected to the output end of the feeding cylinder 21 or the stepping motor. The bracket 23 is arranged in the feeding bin 22. The feeding bin is located between the magnetic block clamping device and the conveying device. The reciprocating driving device for the supporting device drives the bracket to move up and down along the extending direction of the inner wall of the feeding bin in the feeding bin. There is a feeding port below the feeding bin 22 and a discharging port above it. The bracket runs between the feeding port and the discharging port under the action of the feeding cylinder. The plane where the top of the discharging port is located is flush with the upper surfaces of the first supporting structure and the second supporting structure. During feeding, the magnetic blocks are stacked on the top of the bracket. The bracket transports the magnetic blocks to the discharging port so that the bottom of the uppermost magnetic block is flush with the top of the discharging port. A position sensor 80 is arranged at the discharging port. When the sensor 80 detects a magnetic block, the pushing cylinder acts, the pushing rod runs forward, and the pressing surface runs above the magnetic block. When the positioning surface collides with the rear end surface of the uppermost magnetic block, the pushing rod drives the magnetic block to run towards the clamping device, pushes the magnetic block onto the second supporting structure and then onto the first supporting structure, and is clamped by the clamping plate.

[0034] The cutting device includes a laser head 40. The laser head 40 is located in the upper area above the magnetic block clamping position, and the laser head 40 cuts the clamped magnetic blocks. After the previous magnetic block is cut, while the pushing rod 11 conveys the next magnetic block, it pushes the previous magnetic block along the blanking device to drop. The blanking device includes a blanking plate 51 and a receiving plate 52. The blanking plate 51 is inclined downwardly arranged at one end of the clamping device for discharging. The receiving plate 52 is horizontally arranged below the blanking plate 51. After the cut magnetic block is pushed to the blanking plate 51, it slides down along the blanking plate 51 to the receiving plate 52.

[0035] Of course, the clamping members for clamping the magnetic blocks are not only in the form of plates, but also in the form of blocks. The arrangement position of the heads of the elastic clamping members is related to the edge shape of the magnetic blocks to be clamped. When the magnetic blocks are rectangular blocks, the inner surfaces of the two clamping plates are parallel, and the top of the elastic clamping member forms a plane. When the edge of the magnetic block is trapezoidal, the distance between the two clamping plates changes in accordance with the change in the distance between the edges of the trapezoidal magnetic block. When it is a curved surface, the distance between the two clamping plates changes adaptively with the change of the curved surface, but it is not necessarily a curved surface.

[0036] Of course, a power device can also be used as an adjustment mechanism to change the distance between the two clamping plates. For example, the clamping plates are connected to the output end of a reciprocating drive device to change the distance between the two clamping plates and clamp the magnetic block. At this time, the magnetic block is arranged on the two support plates, and the magnetic block is clamped by making the clamping plates approach each other. Or, when the magnetic block is pushed in, the distance between the two clamping plates is slightly larger, and the magnetic block moves along the inner surface of one of the clamping plates. When it reaches the clamping position, the clamping plates are made to approach each other to clamp the magnetic block. The reciprocating drive device can be a cylinder or a gear-rack drive device.

Claims

1. A magnetic block clamping device for a laser cutting machine, characterized in that, it includes a first clamping plate (31) and a second clamping plate (32) arranged side by side. At least at positions corresponding to the positions where the magnetic block (60) is clamped, narrow first support structures for supporting the magnetic block (60) are respectively provided on the inner sides of the first clamping plate (31) and the second clamping plate (32). The height of the first support structure is lower than the upper surfaces of the first clamping plate (31) and the second clamping plate (32), and the length is adapted to the length of the magnetic block (60). The distance between the inner sides of the first clamping plate (31) and the second clamping plate (32) is adapted to the width of the magnetic block. After the magnetic block is clamped between the two clamping plates, the part of the magnetic block located between the two first support structures (33) on both sides is the cuttable width / length of the magnetic block. The parts on the inner surfaces of the two clamping plates above the first support structure (33) participate in the clamping of the workpiece and are called clamping working surfaces. The clamping working surface located on the first clamping plate (31) is called the first clamping working surface (37), and the one located on the second clamping plate (32) is called the second clamping working surface (38). At least on the second clamping working surface of the second clamping plate (32), an elastic clamping member for extruding the magnetic block is fixedly provided. The elastic clamping member is located above the first support structure (33) and corresponds to the position of the clamped magnetic block (60). The elastic clamping member includes a plurality of spring plates (36). The plurality of spring plates (36) are arranged in parallel. The root of the spring plate (36) is fixedly connected to the inner surface of the second clamping plate (32). The head of the spring plate (36) faces the direction of the clamped magnetic block (60). The included angle between the extending direction of the spring plate (36) and the side surface of the clamped magnetic block (60) is an acute angle, and the head is inclined towards the advancing direction of the magnetic block during feeding; the width of the root of the spring plate (36) is smaller than the width of the end, and the end of the spring plate (36) is provided in a circular arc shape; second support structures (35) for supporting the magnetic block are also provided on the inner sides of the first clamping plate (31) and the second clamping plate (32). The first support structure and the second support structure are arranged front and back. The upper surface of the second support structure (35) is flush with the upper surface of the first support structure (33), and the width of the second support structure (35) is greater than the width of the first support structure (33).

2. The magnetic block clamping device for a laser cutting machine according to claim 1, characterized in that, when an elastic clamping member is provided on the clamping working surface of one side clamping plate, the clamping working surface of the other side clamping plate is a rigid surface.

3. The magnetic block clamping device for a laser cutting machine according to claim 1, characterized in that, elongated circular holes (34) are provided on the plates of the first clamping plate (31) and the second clamping plate (32). The first clamping plate (31) and the second clamping plate (32) can move towards each other or away from each other through the elongated circular holes (34).

4. The magnetic block clamping device for a laser cutting machine according to claim 1, characterized in that, The clamping plate one (31) and the clamping plate two (32) are respectively arranged above the lining plate (39). The first support structure and the second support structure are both located inside the lining plate (39). Long circular holes (34) are arranged at positions on the two lining plates (39) corresponding to the positions of the long circular holes on the clamping plate one (31) and the clamping plate two (32).

5. A laser cutting machine, comprising a magnetic block conveying device, a magnetic block clamping device, a feeding device and a cutting device. The cutting device includes a laser head. The laser head of the cutting device is arranged above the first support structure (33), and the magnetic block on the first support structure (33) is cut by the laser head. The feeding device includes a support device for supporting the magnetic block. Characterized in that The magnetic block clamping device described in any one of claims 1-4 is adopted. The support device of the feeding device is arranged between the conveying device and the magnetic block clamping device, and the magnetic block is conveyed from the support device to the first support structure by the magnetic block conveying device.

6. A laser cutting machine as claimed in claim 5, Characterized in that The magnetic block conveying device includes a pushing cylinder (12) and a pushing rod (11). One end of the pushing rod (11) is connected to the output end of the pushing cylinder (12), and the other end is the pushing end. The length direction of the pushing rod (11) is consistent with the length direction of the clamped magnetic block. The height of the lower surface of the pushing rod (11) is adapted to the height of the upper surfaces of the clamping plate one and the clamping plate two. A positioning structure is arranged on the lower surface of the pushing rod (11). The positioning surface (112) of the positioning structure is perpendicular to the lower surface of the pushing rod (11). The positioning surface (112) faces the pushing end. The surface between the positioning surface (112) and the end surface of the pushing end is a pressing surface (111). The length of the pressing surface (111) is adapted to the length of the magnetic block (60). The height by which the positioning surface (112) is higher than the pressing surface (111) is adapted to the thickness of the magnetic block (60). The magnetic block is pushed from the bracket (23) to the second support structure (35) and / or the first support structure by the pushing end of the pushing rod.

7. A method for clamping a magnetic block for a laser cutting machine, Characterized in that The magnetic block clamping device described in any one of claims 1-4 is adopted. The magnetic block (60) is placed between the clamping plate one (31) and the clamping plate two (32). The two lower side edges of the magnetic block (60) are supported by the relatively narrow support structures located inside the clamping plate one (31) and the clamping plate two (32). The clamping plate one (31) and the clamping plate two (32) clamp the magnetic block (60) from two opposite sides of the magnetic block (60). The width of the support structure is 0.3-1.0 mm.

Images