Laminated board production process, laminated board and board cutting machine

Abstract

The invention discloses a laminated wood board production process, a laminated wood board and a board cutting machine, and belongs to the technical field of electrician laminated wood boards. The laminated wood board production process comprises the steps that S1, cutting is conducted, specifically, a board is obliquely cut to form veneers; s2, at least two single boards are bonded and spliced to form a laminate; s3, the laminate is placed in a hot press; s4, double-sided gluing is carried out on the laminated plate after hot pressing is completed; s5, the multiple laminates are stacked to form a plate blank, the bonding positions of every two adjacent laminates are arranged in a staggered mode, and the plate blank is placed in a pre-pressing machine to be pre-pressed; and S6, the pre-pressed plate blank is put into a hot press, the hot pressing temperature ranges from 120 DEG C to 140 DEG C, the plate blank is gradually pressed to the preset thickness, after the plate blank is pressed and formed and the temperature rises to the preset temperature, heat preservation forming is carried out, and cooling and discharging are carried out after forming. The production process solves the technical problem that the density of the electrical laminated board produced in a traditional mode is not uniform.

Description

Technical Field

[0001] The invention relates to the technical field of electrical laminated wood boards, and in particular to a laminated wood board production process, a laminated wood board and a board cutting machine. Background Art

[0002] Electrical laminated wood, also known as electrical laminated wood, is a veneer made of high-quality wood (such as birch) through processes such as steaming, peeling, and drying, and then coated with special insulating glue and processed at high temperature and high pressure to make a board. This kind of wood has the advantages of moderate specific gravity, high mechanical strength, easy vacuum drying, and easy mechanical processing, which makes it play an important role in the manufacture of electrical equipment such as transformers and mutual inductors. In addition, its dielectric constant is close to that of transformer oil, which makes the insulation coordination more reasonable, thereby ensuring the safe and stable operation of electrical equipment. It has been widely used in the electrical industry.

[0003] However, traditional electrical laminated wood boards are generally produced by splicing, which is prone to defects such as uneven density. Summary of the invention

[0004] The main purpose of the present invention is to provide a laminated wood board production process, a laminated wood board and a board cutting machine, aiming to solve the technical problem of uneven density of current electrical laminated wood boards.

[0005] To achieve the above-mentioned purpose, the present invention provides a laminated wood board production process, comprising: S1, cutting, beveling the board to form a single board; S2, bonding, applying adhesive to the cut surfaces of the two veneers, and bonding and splicing at least two veneers to form a layer board; S3, one-time hot pressing, place the laminate in the hot press, the pressure is 9~12kg / cm², the temperature is 140~160℃, and the pressing time is 4~6min; S4, gluing: gluing the laminate on both sides after hot pressing, with a gluing amount of 150g / m²~250g / m² and drying at 20~30℃ for 35~45min; S5, blank making, multiple layers are stacked to form a slab, the bonding points of two adjacent layers are staggered, and the slab is placed in a pre-pressing machine for pre-pressing, the pre-pressing temperature is 40-50°C, the pre-pressing pressure is 1MPa, and the pre-pressing time is 4-6h; S6, forming the plate, put the pre-pressed plate into the hot press, the hot pressing temperature range is 120~140℃, and the plate is gradually pressed to the predetermined thickness. After the plate is pressed and formed, the temperature rises to 150~160℃. When the core layer temperature reaches 150℃, it is heat-insulated and formed according to the requirement of 3min / mm. After forming, the temperature is reduced to below 40℃ for cooling and discharge.

[0006] Optionally, in one embodiment of the present invention, in step S1, the cutting surface includes a stepped bevel section structure, and in the thickness direction, the stepped bevel section structure includes a vertical section and an oblique section, the vertical section is located on both sides of the oblique section, and the cutting surface has at least one stepped bevel section structure.

[0007] Optionally, in one embodiment of the present invention, in step S3, the pressure is 10kg / cm², the temperature is 150°C, and the pressing time is 5 minutes; in step S6, the hot pressing temperature is 130°C, and during the pressing process, the slab is gradually pressurized with a gradient time of 10 to 20 minutes, and after pressurization 3 to 4 times, it is pressed to a predetermined thickness, and the temperature is raised to 150°C after pressing and forming.

[0008] Optionally, in one embodiment of the present invention, the method further includes: S7, trimming, sawing and polishing the pressed laminated wood board.

[0009] To achieve the above object, the present invention also provides a laminated wood board, which is a laminated wood board made according to the above laminated wood board production process.

[0010] To achieve the above object, the present invention further provides a plate cutting machine, which is used for beveling a plate, comprising: An operating table, wherein the table surface of the operating table is provided with a limited partition, and the side surface of the plate is in contact with the limited partition; A cutting unit, wherein the cutting unit comprises a bevel cutter, the bevel cutter is higher than the limit partition, the limit partition forms a avoidance at the bevel cutter, the bevel cutter comprises a gear and a tool, the tool is connected to the gear, the tool comprises two vertical blades and an oblique blade, and the two ends of the oblique blade are respectively connected to the two vertical blades; The propulsion unit comprises a traveling wheel, a side surface of the traveling wheel is provided with a protrusion, the protrusion abuts against a side surface of the plate, and the traveling wheel is rotated to push the plate.

[0011] Optionally, in one embodiment of the present invention, the propulsion unit includes: A telescopic rod connected to the operating table; a first connecting rod, the first connecting rod being rotatably connected to the telescopic rod; The carrier frame is rotatably connected to the first connecting rod through a second connecting rod, a motor is installed on the carrier frame, and the traveling wheel is drivingly connected to the motor.

[0012] Optionally, in one embodiment of the present invention, a protective cover is further included, wherein the protective cover half surrounds the bevel cutter.

[0013] Optionally, in an embodiment of the present invention, the cutting unit further comprises a rotating shaft, and the rotating shaft is detachably connected to the bevel cutter.

[0014] Compared with the prior art, the present invention can at least achieve the following beneficial effects. The production process of laminated wood board is to stack multiple layers of boards, and then press the multiple layers of boards to a predetermined thickness after a certain degree of pressing to form the final finished product. Since the area of ​​each layer of boards is different, and there may be areas of poor quality on the boards that make up the boards, in order to facilitate stacking and remove the areas of poor quality, the boards are beveled to form single boards. After beveling multiple boards, the poor quality parts of the boards can be cut off, and multiple single boards can be combined to form layers of similar area, which is convenient for subsequent stacking and pressing. The beveled parts of multiple single boards are spliced ​​and adhesive is applied to form a layer. After the adhesive is applied to the joints, the layers are placed in a hot press to promote the curing of the adhesive, so that the multiple single boards are formed into a single layer with a stable connection through hot pressing. The amount of glue is determined for the formed layers according to their surface area and glue is applied on both sides, and they are aired after the glue is applied. Compared with single-sided gluing, double-sided gluing can increase the amount of adhesive infiltration. After the gluing, the adhesive will fill and solidify inside the plywood, making its internal structure more compact, improving its structural strength, and making it have better impact resistance and bending resistance. After the gluing, the insulation performance of the plywood can be improved. During the volatilization and curing process of the adhesive, the adhesive will carry the moisture in the plywood out of the plywood, reducing the moisture content in the plywood. After the plywood processing is completed, multiple plywoods are stacked. Since each plywood has at least one bonding point, in order to prevent the bonding points of adjacent plywoods from being concentrated and dislocated or becoming the weak points of the laminated wood board during subsequent pressing, the dislocation arrangement of the bonding points between adjacent plywoods is controlled during stacking. After the multiple plywoods are stacked, they are hot pressed to make the multiple plywoods firmly connected to form a slab. Finally, the slab is placed in a hot press for board processing. At this time, the thicker slab is gradually pressed to the required thickness to make it a laminated wood board. Laminated wood boards in the prior art are usually produced by overlapping, and the overlapping parts are double-layer veneers, which are prone to uneven density, internal pores and other problems. Uneven density will affect the electrical performance of the laminated wood board, and pores and other cavities will cause charge accumulation. This solution combines the veneers and then presses them. The veneer joints are spliced ​​rather than overlapped, which can ensure that the density of each layer is more uniform after molding, solving the technical problem of uneven density at the overlapping parts of current laminated wood boards. In addition, when multiple layers are stacked, the bonding parts of each layer are staggered, so that the bonding parts will not be concentrated during subsequent pressing to produce weak points or separation of veneers at the bonding parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0016] Figure 1 This is a process flow chart of a laminated wood board production process of the present invention; Figure 2 It is a structural schematic diagram of a plate cutting machine of the present invention; Figure 3 A side view of a plate cutting machine according to the present invention; Figure 4 It is a schematic structural diagram of a bevel cutter in a plate cutting machine of the present invention; Figure 5 A side view of a bevel cutter in a plate cutting machine according to the present invention; Figure 6 It is a schematic diagram of splicing the bevel-cut veneer in the present invention.

[0017] Description of Figure Numbers: 100, operating table; 110, position limiting partition; 200, cutting unit; 210, bevel cutter; 211, gear; 212, tool; 213, vertical blade; 214, oblique blade; 220, protective cover; 230, rotating shaft; 240, hand wheel; 300, propulsion unit; 310, travel wheel; 320, telescopic rod; 330, first connecting rod; 340, bearing frame; 350, second connecting rod; 400, stepped bevel section; 410, vertical section; 420, oblique section; The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] Reference Figure 1 The present invention provides a laminated wood board production process, comprising: S1, cutting, beveling the board to form a single board; S2, bonding, applying adhesive to the cut surfaces of the two veneers, and bonding and splicing at least two veneers to form a layer board; S3, one-time hot pressing, place the laminate in the hot press, the pressure is 9~12kg / cm², the temperature is 140~160℃, and the pressing time is 4~6min; S4, gluing: gluing the laminate on both sides after hot pressing, with a gluing amount of 150g / m²~250g / m² and drying at 20~30℃ for 35~45min; S5, blank making, multiple layers are stacked to form a slab, the bonding points of two adjacent layers are staggered, and the slab is placed in a pre-pressing machine for pre-pressing, the pre-pressing temperature is 40-50°C, the pre-pressing pressure is 1MPa, and the pre-pressing time is 4-6h; S6, forming the plate, put the pre-pressed plate into the hot press, the hot pressing temperature range is 120~140℃, and the plate is gradually pressed to the predetermined thickness. After the plate is pressed and formed, the temperature rises to 150~160℃. When the core layer temperature reaches 150℃, it is heat-insulated and formed according to the requirement of 3min / mm. After forming, the temperature is reduced to below 40℃ for cooling and discharge.

[0023] The production process of laminated wood is to stack multiple layers of boards, and then press them to a predetermined thickness after a certain degree of pressing to form the final product. Since the area of ​​each layer of boards is different, and there may be areas of poor quality on the boards that make up the layers, in order to facilitate stacking and remove the poor quality areas, the boards are beveled to form single boards. After beveling multiple boards, the poor quality parts of the boards can be removed, and multiple single boards can be combined to form layers of similar areas, which is convenient for subsequent stacking and pressing. The beveled parts of multiple single boards are spliced ​​and adhesive is applied to form a layer. After the adhesive is applied to the joints, the layers are placed in a hot press to promote the curing of the adhesive, so that the multiple single boards are formed into a single layer with a stable connection through hot pressing. The amount of glue is determined according to the surface area of ​​the formed layer and glue is applied on both sides. After the glue is applied, it is dried. Compared with single-sided gluing, double-sided gluing can increase the amount of adhesive infiltration. After the gluing, the adhesive will fill and solidify inside the plywood, making its internal structure more compact, improving its structural strength, and making it have better impact resistance and bending resistance. After the gluing, the insulation performance of the plywood can be improved. During the volatilization and curing process of the adhesive, the adhesive will carry the moisture in the plywood out of the plywood, reducing the moisture content in the plywood. After the plywood processing is completed, multiple plywoods are stacked. Since each plywood has at least one bonding point, in order to prevent the bonding points of adjacent plywoods from being concentrated and dislocated or becoming the weak points of the laminated wood board during subsequent pressing, the dislocation arrangement of the bonding points between adjacent plywoods is controlled during stacking. After the multiple plywoods are stacked, they are hot pressed to make the multiple plywoods firmly connected to form a slab. Finally, the slab is placed in a hot press for board processing. At this time, the thicker slab is gradually pressed to the required thickness to make it a laminated wood board. Laminated wood boards in the prior art are usually produced by overlapping, and the overlapping parts are double-layer veneers, which are prone to uneven density, internal pores and other problems. Uneven density will affect the electrical performance of the laminated wood board, and pores and other cavities will cause charge accumulation. This solution combines the veneers and then presses them. The veneer joints are spliced ​​rather than overlapped, which can ensure that the density of each layer is more uniform after molding, solving the technical problem of uneven density at the overlapping parts of current laminated wood boards. In addition, when multiple layers are stacked, the bonding parts of each layer are staggered, so that the bonding parts will not be concentrated during subsequent pressing to produce weak points or separation of veneers at the bonding parts.

[0024] Further, refer to Figure 6 In step S1, the cutting surface includes a stepped bevel surface 400. In the thickness direction, the stepped bevel surface structure includes a vertical section 410 and an oblique section 420. The vertical section is located on both sides of the oblique section. The cutting surface has at least one stepped bevel surface 400.

[0025] When the veneer with a pure bevel cutting surface is glued together, although it will not produce a large degree of density change such as overlap, it may still be over- or under-joined during the splicing process of the cutting surface, and the density of the bonding point still has a small degree of density change after the layer is formed. In order to reduce this situation, the cutting surface is designed to have at least one stepped beveled surface structure, and the stepped beveled surface structure includes a vertical section and an oblique section, and the vertical section is located on both sides of the oblique section. When splicing, the vertical sections of the cutting surfaces of adjacent veneers fit each other, and the oblique sections fit together. The vertical sections have a limiting effect on the two veneers to prevent them from over-joining, and in a hot pressing process, the stepped beveled surface structure is less likely to slide at the joint and cause under-joining than the pure beveled surface structure. Therefore, when the cutting surface is designed as a stepped beveled surface, it can further solve the problem of density change at the joint. It can be understood that there can be multiple stepped beveled surface structures arranged on the cutting surface.

[0026] After the cutting surface of the single board is processed, when two single boards are spliced, in order to achieve the splicing of the cutting surfaces, one single board needs to be horizontally flipped to achieve the splicing of the cutting surfaces.

[0027] Specifically, in the processing of laminated wood boards, during one hot pressing, the parameters of the hot press machine are as follows: pressure is 10kg / cm², temperature is 150°C, and pressing time is 5min.

[0028] When the slab is pressed to a predetermined thickness in the board forming step, it is not directly formed by one pressing, but is pressurized in stages, with a gradient stage of 10 to 20 minutes. After a gradient stage, the pressure is increased. After 3 to 4 pressurizations, the slab is gradually pressed to a predetermined thickness. Compared with single-stage press molding, multi-stage pressurization can reduce stress concentration and reduce the risk of cracks or breaks in laminated wood during use. In addition, in the process of gradual pressurization, each pressurization can squeeze out the gas in the slab, exhaust the gas to reduce the gaps in the finished laminated wood, and reduce the electrical leakage path to improve its electrical insulation performance.

[0029] Furthermore, after the laminated wood board is pressed, the board is subjected to trimming processes such as edge sawing and polishing. After the trimming is completed, the laminated wood board is placed in a warehouse and waits for use.

[0030] It should be noted that, when performing step S4, a large number of layer boards will be produced to unify the subsequent blank making process. After the layer boards are coated with glue and dried, the layer boards with similar bonding positions will be stored together, such as the bonding positions of the layer boards in pile A are similar, the bonding positions of the layer boards in pile B are similar, and the bonding positions of the layer boards in pile C are similar, and the bonding positions of the layer boards in piles A, B, and C are different. In the subsequent blank making steps, the layer boards are respectively taken out from pile A, pile B, pile C, etc. and stacked alternately, which can prevent the layer boards from having weak points in the finished product due to the similar bonding positions, and can also improve production efficiency.

[0031] To achieve the above objectives, the present invention further proposes a laminated wood board, which is manufactured by the above process. Therefore, the laminated wood board has all the beneficial effects described above, which will not be described one by one here.

[0032] Reference Figure 2~Figure 5 In addition, the present invention also provides a plate cutting machine, which is used to cut the plate into a single board, and the cutting machine includes: An operating table 100, a surface of the operating table 100 is provided with a limited partition 110, and a side surface of the plate is attached to the limited partition 110; The cutting unit 200 includes a bevel cutter 210, the bevel cutter 210 is higher than the limiting partition 110, the limiting partition 110 forms a avoidance at the bevel cutter 210, the bevel cutter 210 includes a gear 211 and a tool 212, the tool 212 is connected to the gear 211, the tool 212 includes two vertical blades 213 and an oblique blade 214, and the two ends of the oblique blade 214 are respectively connected to the two vertical blades 213; The propulsion unit 300 includes a traveling wheel 310 . The side of the traveling wheel 310 has a protrusion, which abuts against the side of the plate. The traveling wheel 310 is rotated to push the plate.

[0033] When cutting the plate, one side of the plate fits with the limiting partition 110, and the other side of the plate fits with the traveling wheel 310 of the propulsion unit 300. The traveling wheel 310 and the limiting partition 110 clamp the plate to ensure that the plate remains in a vertical state during cutting. Of course, during cutting, the operator can also support the plate to keep the plate in a vertical state. The cutting unit 200 includes a bevel cutter 210 for beveling the plate. The bevel cutter 210 includes a gear 211 and a tool 212. To achieve the cutting of the stepped bevel surface, the tool 212 has two vertical blades 213 and one oblique blade 214, which are respectively used to form the vertical section and the oblique section of the stepped bevel surface.

[0034] Specifically, the propulsion unit 300 includes a telescopic rod 320, a first connecting rod 330 and a carrier 340. The telescopic rod 320 can drive the carrier 340 to move in the height direction; the connecting rod is rotatably connected to the telescopic rod 320 to realize the swing of the carrier 340 in the direction of the plate; the carrier 340 is rotatably connected to the first connecting rod 330 through the second connecting rod 350 to realize the rotation of the carrier 340 along the axis of the second connecting rod 350, and the motor and the traveling wheel 310 are installed on the carrier 340. The above design structure enables the traveling wheel 310 to cooperate with plates of different structures, thereby improving the versatility of the cutting machine.

[0035] In addition, the cutting machine is also provided with a hand wheel 240, which is connected to the cutting unit 200 and adjusts the height of the bevel cutter 210 to adjust the height of the plate cutting. The specific structure of the hand wheel 240 to adjust the height of the cutting unit 200 is that the bevel cutter 210 and its driving device are installed on a frame, the frame is located below the operating table 100, and the hand wheel 240 adjusts the height of the frame through a telescopic structure to control the height of the bevel cutter 210.

[0036] The cutting machine further includes a protective cover 220, which forms a semi-enclosed structure for the bevel cutter 210. During the cutting process, wood chips will splash due to the rotation of the cutting knife. By providing the protective cover 220, some wood chips can be collected. In addition, if the bevel cutter 210 is separated during the working process, the protective cover 220 can also have a certain blocking effect on the bevel cutter 210 to prevent it from flying away to a far position.

[0037] The cutting unit 200 also includes a rotating shaft 230, which is connected to the bevel cutter 210. The rotating shaft 230 transmits power to the bevel cutter 210. The bevel cutter 210 and the rotating shaft 230 are detachably connected to facilitate replacement of different types of tools 212 to achieve different types of cutting, thereby improving the versatility of the cutting machine.

[0038] The above are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A process for producing a laminated wood board, characterized in that: include: S1, cutting, beveling the board to form a single board; S2, bonding, applying adhesive to the cut surfaces of the two veneers, and bonding and splicing at least two veneers to form a layer board; S3, one-time hot pressing, place the laminate in the hot press, the pressure is 9~12kg / cm², the temperature is 140~160℃, and the pressing time is 4~6min; S4, gluing: gluing the laminate on both sides after hot pressing, with a gluing amount of 150g / m²~250g / m² and drying at 20~30℃ for 35~45min; S5, blank making, multiple layers are stacked to form a slab, the bonding points of two adjacent layers are staggered, and the slab is placed in a pre-pressing machine for pre-pressing, the pre-pressing temperature is 40-50°C, the pre-pressing pressure is 1MPa, and the pre-pressing time is 4-6h; S6, forming the plate, put the pre-pressed plate into the hot press, the hot pressing temperature range is 120~140℃, and the plate is gradually pressed to the predetermined thickness. After the plate is pressed and formed, the temperature rises to 150~160℃. When the core layer temperature reaches 150℃, it is heat-insulated and formed according to the requirement of 3min / mm. After forming, the temperature is reduced to below 40℃ for cooling and discharge.

2. The process for producing a laminated wood board according to claim 1, characterized in that: In step S1, the cutting surface includes a stepped bevel section structure. In the thickness direction, the stepped bevel section structure includes a vertical section and an oblique section. The vertical section is located on both sides of the oblique section. The cutting surface has at least one stepped bevel section structure.

3. The process for producing a laminated wood board according to claim 1, characterized in that: In step S3, the pressure is 10 kg / cm², the temperature is 150°C, and the pressing time is 5 min; In step S6, the hot pressing temperature is 130°C. During the pressing process, the slab is gradually pressurized with a gradient time of 10 to 20 minutes. After 3 to 4 times of pressurization, it is pressed to a predetermined thickness. After pressing and forming, the temperature is increased to 150°C.

4. The process for producing a laminated wood board according to claim 1, characterized in that: Also includes: S7, trimming, sawing and polishing the pressed laminated wood board.

5. A laminated wood board, characterized in that: The wood board is a laminated wood board made by the process according to any one of claims 1 to 4.

6. A sheet cutting machine for beveling a sheet in a process as claimed in claim 2, characterized in that: include: An operating table, wherein the table surface of the operating table is provided with a limited partition, and the side surface of the plate is in contact with the limited partition; A cutting unit, wherein the cutting unit comprises a bevel cutter, the bevel cutter is higher than the limit partition, the limit partition forms a avoidance at the bevel cutter, the bevel cutter comprises a gear and a tool, the tool is connected to the gear, the tool comprises two vertical blades and an oblique blade, and the two ends of the oblique blade are respectively connected to the two vertical blades; The propulsion unit comprises a traveling wheel, a side surface of the traveling wheel is provided with a protrusion, the protrusion abuts against a side surface of the plate, and the traveling wheel is rotated to push the plate.

7. The plate cutting machine according to claim 6, characterized in that: The propulsion unit comprises: A telescopic rod connected to the operating table; a first connecting rod, the first connecting rod being rotatably connected to the telescopic rod; The carrier frame is rotatably connected to the first connecting rod through a second connecting rod, a motor is installed on the carrier frame, and the traveling wheel is drivingly connected to the motor.

8. The plate cutting machine according to claim 6, characterized in that: A protective cover is also included, which semi-encloses the bevel cutter.

9. The plate cutting machine according to claim 6, characterized in that: The cutting unit further comprises a rotating shaft, and the rotating shaft is detachably connected to the beveling cutter.

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