A cutting device for solid wood composite floor

Abstract

This invention belongs to the field of flooring processing technology, specifically a cutting device for engineered wood flooring. It utilizes a roller conveyor belt to transport the board material towards the side guide roller assembly. By restricting the side of the board, the consistency of the board's vertical position and that of the (lateral / longitudinal) roller cutting assembly is ensured, thereby determining the rolling and cutting accuracy. Since deviation is prone to occur during roller cutting, friction wheels are added before and after the roller cutting process to assist in precise cutting.

Description

Technical Field

[0001] This invention belongs to the field of flooring processing technology, specifically a cutting device for solid wood composite flooring. Background Technology

[0002] Engineered wood flooring is made by cross-lamining different types of wood, which to some extent overcomes the drawbacks of solid wood flooring such as expansion and contraction due to moisture. It has a low rate of expansion and contraction, good dimensional stability, and retains the natural wood grain and comfortable feel of solid wood flooring. Engineered wood flooring combines the stability of laminate flooring with the aesthetics of solid wood flooring, and also has environmental advantages. Therefore, it is widely favored by consumers in the market.

[0003] Traditional engineered wood flooring is produced by pressing raw materials through a multi-layer press, followed by cross-cutting and longitudinal cutting to trim the sides into large boards. These boards then require further cutting and chamfering. One method involves first molding the boards to create the seams and chamfers, then sawing the large boards cross-section and longitudinally to obtain strips. These strips require edge grooving and chamfering to obtain the final board. This method can easily lead to compressive stress on the surface layer near the seams, or even surface tearing during molding. Furthermore, it requires high precision in subsequent cutting, making it prone to issues with uneven chamfering. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the inventors, through practice and summarization, derived the technical solution of this invention, which adopts the following technical solution:

[0005] A cutting device for engineered wood flooring, comprising, in sequence along the board processing direction:

[0006] Transverse conveyor assembly, used for horizontal transverse conveying of slabs;

[0007] The transverse rolling and cutting assembly performs online transverse cutting on the conveyed slab and rolls along the cut seam to obtain the chamfer of the joint.

[0008] The longitudinal conveying assembly converts the transversely cut slab into a longitudinal conveyor;

[0009] The longitudinal rolling and cutting assembly performs online longitudinal cutting on the conveyed slab and rolls along the cut seam to obtain a chamfer at the joint.

[0010] Preferably, the transverse conveying assembly includes a transverse roller conveyor belt and a transverse side guide wheel set. The transverse roller conveyor belt includes an inclined roller and a longitudinal roller along the conveying direction. The inclined roller is used to convey the slab to the side close to the transverse side guide wheel set. The transverse side guide wheel set covers the side located on the inclined roller and the longitudinal roller for horizontal transverse conveying of the slab.

[0011] Preferably, the transverse rolling and cutting assembly is located at the top of the longitudinal roller area. The transverse rolling and cutting assembly includes three sets of parallel transverse drive shafts. One end of each transverse drive shaft is connected to a transverse drive sprocket. The three sets of transverse drive sprockets are connected by chain drive. One end of each transverse drive shaft is connected to a transverse drive motor via a coupling. Multiple sets of transverse cutting blades and transverse rolling rollers are evenly distributed on the transverse drive shaft in the middle. The transverse cutting blades and transverse rolling rollers are staggered, and the end faces of the transverse cutting blades and the end faces of the transverse rolling rollers are in contact. The ends of the transverse rolling rollers are provided with outwardly extending transverse protrusions. The transverse protrusions are used for rolling and forming transverse seams of the slab. Transverse rubber wheels are evenly distributed on the transverse drive shafts on both sides for conveying the slab.

[0012] Preferably, the longitudinal conveying assembly includes a longitudinal roller conveyor belt and a longitudinal side guide wheel set. The longitudinal roller conveyor belt includes an inclined roller two and a transverse roller along the conveying direction. The inclined roller two is used to convey the slab to the side close to the longitudinal side guide wheel set. The longitudinal side guide wheel set covers the side located on the inclined roller two and the longitudinal roller for horizontal longitudinal conveying of the slab.

[0013] Preferably, the longitudinal rolling and cutting assembly is located at the top of the transverse roller area. The longitudinal rolling and cutting assembly includes three sets of parallel longitudinal drive shafts. One end of each longitudinal drive shaft is connected to a longitudinal drive sprocket. The three sets of longitudinal drive sprockets are connected by chain drive. One end of each longitudinal drive shaft is connected to a longitudinal drive motor via a coupling. Multiple sets of longitudinal cutting blades and longitudinal rolling rollers are evenly distributed on the longitudinal drive shaft in the middle. The longitudinal cutting blades and longitudinal rolling rollers are staggered, and the end faces of the longitudinal cutting blades and the end faces of the longitudinal rolling rollers are in contact. The ends of the longitudinal rolling rollers are provided with outwardly extending longitudinal protrusions. The longitudinal protrusions are used for rolling and forming the longitudinal seam of the slab. Longitudinal rubber wheels are evenly distributed on the longitudinal drive shafts on both sides for conveying the slab.

[0014] Preferably, both the transverse convex portion and the longitudinal convex portion are inwardly concave arc-shaped surfaces, with an arc angle of 1-10° and an arc length of 3-10mm.

[0015] Preferably, the cutting device further includes high-pressure air nozzles disposed on both sides of the transverse protrusion and the longitudinal protrusion. Each set of high-pressure air nozzles has two symmetrically distributed relative to the drive shaft. The high-pressure air nozzles located on the rear side are arranged diagonally downward from top to bottom against the direction of sheet material conveying, while the high-pressure air nozzles located on the front side are arranged diagonally downward from top to bottom along the direction of sheet material conveying. The airflow from the high-pressure air nozzles covers the cutting blade area located on the outer side of the protrusion.

[0016] Preferably, the heights of the transverse rolling cutter assembly and the longitudinal rolling cutter assembly are adjustable.

[0017] A method for using a cutting device for engineered wood flooring includes the following steps:

[0018] S100, Large Plate Lateral Conveying

[0019] Large plates are picked up by an adsorption-type robotic arm and transported onto a transverse roller conveyor belt. The inclined rollers of the transverse roller conveyor belt adhere the large plates to the transverse side guide wheel group. The longitudinal rollers and the transverse side guide wheel group transport the large plates horizontally.

[0020] S200, transverse roll cutting

[0021] The transverse drive motor drives the transverse transmission shaft to rotate via a coupling. The front friction wheel stably conveys the large plate to the rear. During the conveying process, the transverse cutting blade and transverse rolling roller complete the transverse cutting and roll the seam at the cut to obtain the arc-shaped chamfered transverse seam.

[0022] S300, longitudinal conveyor

[0023] The rear friction wheel and longitudinal roller transport the transversely cut slab to the inclined roller two of the longitudinal roller conveyor belt, and then the inclined roller two adheres to the longitudinal side guide wheel group. The transverse roller and the longitudinal side guide wheel group transport the large plate horizontally longitudinally.

[0024] S400, longitudinal roll cutting

[0025] The longitudinal drive motor drives the longitudinal transmission shaft to rotate via a coupling. The front friction wheel stably conveys the large plate to the rear. During the conveying process, the longitudinal cutting blade and the longitudinal rolling roller complete the longitudinal cutting and the rolling at the cut seam is completed in time to obtain the arc-shaped chamfered longitudinal seam, thus obtaining the plate blank.

[0026] The rear friction wheel and the transverse roller transport the slab to the stacking area for unified stacking.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] This invention employs a roller conveyor belt to transport sheet metal towards the side guide wheel assembly. By restricting the side of the sheet metal, it ensures the consistency of the vertical position of the sheet metal and the (lateral / longitudinal) roll forming and cutting components, thereby determining the roll forming and cutting accuracy. Since roll forming and cutting is prone to deviation, friction wheels are added before and after the roll forming process to assist in precise cutting.

[0029] This invention achieves one-step rolling and edge trimming of a slab blank using a roll forming and cutting assembly. During rolling, the chamfered edges of the slab seams are rounded to create a "seamless" blank. The cutting blade cuts grooves into the slab, and immediately afterwards, the protruding end of the roll forming rollers rolls downwards to create a chamfer, distributing compressive stress more evenly and mitigating the negative effects of compressive stress at the chamfer. It also avoids the surface arching problem that can easily occur with single-roll forming, which leads to wrinkles during subsequent rolling. This application utilizes front-side cutting and guides the surface layer in the originally arched area downwards to prevent further arching, thus avoiding wrinkles. Attached Figure Description

[0030] Figure 1 This is a top view of the overall structure of the present invention;

[0031] Figure 2 This is a cross-sectional view of the transverse rolling and cutting assembly of the present invention;

[0032] Figure 3 This is a top view of the transverse drive motor and transverse transmission shaft of the present invention;

[0033] Figure 4 This is a longitudinal cross-sectional view of the longitudinal rolling and cutting assembly of the present invention;

[0034] Figure 5 This is a top view of the longitudinal drive motor and the transverse transmission shaft of the present invention;

[0035] Figure 6 A cross-sectional view of the transverse rolling and cutting assembly of the present invention equipped with a high-pressure air nozzle;

[0036] Figure 7 A longitudinal cross-sectional view of the longitudinal rolling and cutting assembly of the present invention equipped with a high-pressure air nozzle;

[0037] Figure 8 This is a top view of the transverse drive motor, transverse transmission shaft, and high-pressure air nozzle of the present invention.

[0038] Figure 9 This is a top view of the longitudinal drive motor, longitudinal transmission shaft, and high-pressure air nozzle of the present invention. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0040] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] Example 1, such as Figures 1 to 5 As shown, a cutting device for solid wood composite flooring includes, in sequence along the board processing direction:

[0042] Transverse conveying assembly 10, which is used for horizontal transverse conveying of slabs;

[0043] The transverse rolling and cutting assembly 20 performs online transverse cutting on the conveyed slab and rolls along the cut seam to obtain the chamfer of the joint.

[0044] Longitudinal conveying component 30, which converts the transversely cut slab into a longitudinal conveyor;

[0045] The longitudinal rolling and cutting assembly 40 performs online longitudinal cutting on the conveyed slab and rolls along the cut seam to obtain the chamfer of the joint.

[0046] The transverse conveying assembly 10 includes a transverse roller conveyor belt 101 and a transverse side guide wheel assembly 102. The transverse roller conveyor belt 101 includes an inclined roller 1011 and a longitudinal roller 1012 along the conveying direction. The inclined roller 1011 conveys the slab towards the side closest to the transverse side guide wheel assembly 102. The transverse side guide wheel assembly 102 covers the side of the inclined roller 1011 and the longitudinal roller 1012 for horizontal transverse conveying of the slab. The large slab is conveyed by the inclined roller 1011 towards the side closest to the transverse side guide wheel assembly 102 until it adheres to the transverse side guide wheel assembly 102, and then transversely conveyed by the longitudinal roller 1012 to the transverse rolling and cutting station for transverse cutting.

[0047] The transverse rolling and cutting assembly 20 is located at the top of the longitudinal roller 1012 area. The transverse rolling and cutting assembly 20 includes three sets of parallel transverse drive shafts 21. One end of the transverse drive shaft 21 is connected to a transverse drive sprocket 22. The three sets of transverse drive sprockets 22 are connected by chain drive. One end of the transverse drive shaft 21 is connected to a transverse drive motor 23 through a coupling. Multiple sets of transverse cutting blades 24 and transverse rolling rollers 25 are evenly distributed on the transverse drive shaft 21 in the middle. The transverse cutting blades 24 and transverse rolling rollers 25 are staggered and the end faces of the transverse cutting blades 24 and transverse rolling rollers 25 are in contact. The end of the transverse rolling roller 25 is provided with an outwardly extending transverse protrusion 26. The transverse protrusion 26 is used for rolling and forming the transverse seam of the slab. Transverse rubber wheels 27 are evenly distributed on the transverse drive shafts 21 on both sides for conveying the slab. The transverse drive motor 23 drives the transverse transmission shaft 22 for transmission. Multiple transverse transmission shafts 22 are connected by a chain to form a transmission mechanism. The transverse rubber wheel 27 restricts the longitudinal position of the sheet material, allowing it to be conveyed horizontally only. During the conveying process, the transverse cutting blade 24 and the transverse rolling roller 25 are used to perform cutting and rolling operations.

[0048] The longitudinal conveying assembly 30 includes a longitudinal roller conveyor belt 31 and a longitudinal side guide wheel assembly 32. The longitudinal roller conveyor belt 31 includes an inclined roller 33 and a transverse roller 34 along the conveying direction. The inclined roller 33 is used to convey the slab to the side closer to the longitudinal side guide wheel assembly 32. The longitudinal side guide wheel assembly 32 covers the side of the inclined roller 33 and the longitudinal roller 1012 for horizontal longitudinal conveying of the slab. The transversely cut slab is conveyed to the longitudinal roller conveyor belt 31 by the longitudinal roller 1012. The inclined roller 33 conveys the slab and adheres it to the longitudinal side guide wheel assembly 32. After being conveyed forward by the longitudinal side guide wheel assembly 32, it is conveyed to the longitudinal rolling cutting station by the transverse roller 34.

[0049] The longitudinal rolling and cutting assembly 40 is located at the top of the transverse roller 34 area. The longitudinal rolling and cutting assembly 40 includes three sets of parallel longitudinal drive shafts 41. One end of the longitudinal drive shaft 41 is connected to a longitudinal drive sprocket 42. The three sets of longitudinal drive sprockets 42 are connected by chain drive. One end of the longitudinal drive shaft 41 is connected to a longitudinal drive motor 43 through a coupling. Multiple sets of longitudinal cutting blades 44 and longitudinal rolling rollers 45 are evenly distributed on the longitudinal drive shaft 41 in the middle. The longitudinal cutting blades 44 and longitudinal rolling rollers 45 are staggered. The end face of the longitudinal cutting blade 44 is in contact with the end face of the longitudinal rolling roller 45. The end of the longitudinal rolling roller 45 is provided with an outwardly extending longitudinal protrusion 46. The longitudinal protrusion 46 is used for rolling and forming the longitudinal seam of the slab. Longitudinal rubber wheels 47 are evenly distributed on the longitudinal drive shafts 41 on both sides for conveying the slab. The longitudinal drive motor 43 drives the longitudinal transmission shaft 42 for transmission. Multiple longitudinal transmission shafts 42 are connected by a chain to form a transmission cooperation. The longitudinal rubber wheel 47 restricts the longitudinal position of the sheet material, allowing only longitudinal horizontal conveying. During the conveying process, the longitudinal cutting blade 44 and the longitudinal rolling roller 45 realize the cutting and rolling operations.

[0050] Both the transverse protrusion 26 and the longitudinal protrusion 46 are inwardly concave arc-shaped surfaces with an arc angle of 1-10° and an arc length of 3-10mm. An electric heating structure is embedded inside both the transverse protrusion 26 and the longitudinal protrusion 46 to heat the surface layer of the chamfered area.

[0051] Example 2, as Figures 6 to 9 As shown, based on the above embodiment, the following improvements are made: the cutting device further includes high-pressure air nozzles 50 disposed on both sides of the transverse protrusion 26 and the longitudinal protrusion 46. Each set of high-pressure air nozzles 50 has two nozzles symmetrically distributed relative to the drive shaft. The high-pressure air nozzles 50 located on the rear side are arranged diagonally downwards against the direction of sheet material conveying, while the high-pressure air nozzles 50 located on the front side are arranged diagonally downwards along the direction of sheet material conveying. The airflow from the high-pressure air nozzles 50 covers the cutting blade area located on the outer side of the protrusion. Both the transverse cutting blade 25 and the longitudinal cutting blade 54 are ceramic blades. The airflow from the high-pressure air nozzles 50 on the front side is close to the cutting blade and used to cool the blade and remove debris. The airflow from the high-pressure air nozzles 50 on the rear side is used to cool the chamfered surface layer to prevent the surface material from adhering to the blade during rolling. Meanwhile, since the high-pressure air nozzles 50 are symmetrically distributed on both sides of the cutting blade, they can apply pressure to both sides of the cutting blade, thereby increasing the resistance to blade vibration during cutting, eliminating vibration, and preventing it from affecting the rolling and cutting quality.

[0052] Example 3, as Figures 6 to 9As shown, the following improvements are made based on the above embodiments: the heights of the transverse rolling cutting assembly 20 and the longitudinal rolling cutting assembly 40 are adjustable. The heights are adjusted by installing the transverse rolling cutting assembly 20 and the longitudinal rolling cutting assembly 40 on their respective frames and by using driving components such as cylinders, hydraulic rods, and electric push rods.

[0053] A method for using a cutting device for engineered wood flooring includes the following steps:

[0054] S100, Large Plate Lateral Conveying

[0055] The large plate is picked up by an adsorption robot and transported to the transverse roller conveyor belt 101. The large plate is attached to the transverse side guide wheel group 102 by the inclined roller 1011 of the transverse roller conveyor belt 101. The longitudinal roller 1012 and the transverse side guide wheel group 102 transport the large plate horizontally.

[0056] S200, transverse roll cutting

[0057] The transverse drive motor 23 drives the transverse transmission shaft 21 to rotate via a coupling. The front friction wheel stably conveys the large plate to the rear. During the conveying process, the transverse cutting blade 24 and the transverse rolling roller 25 complete the transverse cutting and roll the seam at the cutting point to obtain the arc-shaped chamfered transverse seam.

[0058] S300, longitudinal conveyor

[0059] The rear friction wheel and longitudinal roller 1012 transport the transversely cut slab to the inclined roller 33 of the longitudinal roller conveyor belt 31, and then the inclined roller 33 adheres to the longitudinal side guide wheel group 32. The transverse roller 34 and the longitudinal side guide wheel group 32 transport the large plate horizontally and longitudinally.

[0060] S400, longitudinal roll cutting

[0061] The longitudinal drive motor 43 drives the longitudinal transmission shaft 41 to rotate via a coupling. The front friction wheel stably conveys the large plate to the rear. During the conveying process, the longitudinal cutting blade 44 and the longitudinal rolling roller 45 complete the longitudinal cutting and the rolling at the cut seam to obtain the arc-shaped chamfered longitudinal seam, thus obtaining the plate blank.

[0062] The rear friction wheel and the transverse roller 34 transport the slab to the stacking area for unified stacking.

[0063] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made to the technical solutions and inventive concepts of the present invention should all be covered within the scope of protection of the present invention.

Claims

1. A cutting device for solid wood composite flooring, characterized in that, Along the slab processing direction, the following are included in sequence: A transverse conveying assembly (10) is used for horizontally conveying slabs; The transverse rolling cutting assembly (20) performs online transverse cutting on the conveyed slab and rolls along the cut seam to obtain the chamfer of the joint; The longitudinal conveying assembly (30) converts the transversely cut slab into a longitudinal conveyor; The longitudinal rolling and cutting assembly (40) performs online longitudinal cutting on the conveyed slab and rolls along the cut seam to obtain the chamfer of the joint; The transverse conveying assembly (10) includes a transverse roller conveyor belt (101) and a transverse side guide wheel assembly (102). The transverse roller conveyor belt (101) includes an inclined roller (1011) and a longitudinal roller (1012) along the conveying direction. The inclined roller (1011) is used to convey slabs to the side close to the transverse side guide wheel assembly (102). The transverse side guide wheel assembly (102) covers the side located between the inclined roller (1011) and the longitudinal roller (1012) for horizontal transverse conveying of slabs. The transverse rolling cutting assembly (20) is located at the top of the longitudinal roller (1012) area. The transverse rolling cutting assembly (20) includes three sets of parallel transverse drive shafts (21). One end of the transverse drive shaft (21) is connected to a transverse drive sprocket (22). The three sets of transverse drive sprockets (22) are connected by chain drive. One end of the transverse drive shaft (21) is connected to the transverse drive motor (23) through a coupling. The transverse drive shaft (21) located in the middle is evenly spaced on the transverse drive shaft (21). The fabric has multiple sets of transverse cutting blades (24) and transverse rolling rollers (25). The transverse cutting blades (24) and transverse rolling rollers (25) are staggered, and the end face of the transverse cutting blades (24) and the end face of the transverse rolling rollers (25) are in contact. The end of the transverse rolling rollers (25) is provided with outwardly extending transverse protrusions (26). The transverse protrusions (26) are used to roll and form the transverse seam of the slab. Transverse rubber wheels (27) are evenly distributed on the transverse drive shafts (21) on both sides for conveying the slab.

2. The cutting device for solid wood composite flooring according to claim 1, characterized in that, The longitudinal conveying assembly (30) includes a longitudinal roller conveyor belt (31) and a longitudinal side guide wheel assembly (32). The longitudinal roller conveyor belt (31) includes an inclined roller (33) and a transverse roller (34) along the conveying direction. The inclined roller (33) is used to convey slabs to the side close to the longitudinal side guide wheel assembly (32). The longitudinal side guide wheel assembly (32) covers the side of the inclined roller (33) and the longitudinal roller (1012) for horizontal longitudinal conveying of slabs.

3. The cutting device for solid wood composite flooring according to claim 2, characterized in that, The longitudinal rolling cutting assembly (40) is located at the top of the transverse roller (34) area. The longitudinal rolling cutting assembly (40) includes three sets of parallel longitudinal drive shafts (41). One end of the longitudinal drive shaft (41) is connected to a longitudinal drive sprocket (42). The three sets of longitudinal drive sprockets (42) are connected by chain drive. One end of the longitudinal drive shaft (41) is connected to the longitudinal drive motor (43) through a coupling. The longitudinal drive shaft (41) located in the middle is evenly spaced. There are multiple sets of longitudinal cutting blades (44) and longitudinal rolling rollers (45). The longitudinal cutting blades (44) and longitudinal rolling rollers (45) are staggered, and the end face of the longitudinal cutting blades (44) and the end face of the longitudinal rolling rollers (45) are in contact. The end of the longitudinal rolling rollers (45) is provided with an outwardly extending longitudinal protrusion (46). The longitudinal protrusion (46) is used to roll and form the longitudinal seam of the slab. Longitudinal rubber wheels (47) are evenly distributed on the longitudinal drive shafts (41) on both sides for conveying the slab.

4. The cutting device for solid wood composite flooring according to claim 3, characterized in that, Both the transverse protrusion (26) and the longitudinal protrusion (46) are inwardly concave arc-shaped surfaces with an arcuate degree of 1-10° and an arc length of 3-10mm.

5. The cutting device for solid wood composite flooring according to claim 4, characterized in that, The cutting device also includes high-pressure air nozzles (50) set on both sides of the transverse protrusion (26) and the longitudinal protrusion (46). Each set of high-pressure air nozzles (50) has two symmetrically distributed relative to the drive shaft. The high-pressure air nozzles (50) located on the rear side are arranged diagonally downwards against the direction of the sheet material conveying from top to bottom, while the high-pressure air nozzles (50) located on the front side are arranged diagonally downwards along the direction of the sheet material conveying from top to bottom. The airflow of the high-pressure air nozzles (50) covers the cutting blade area located on the outer side of the protrusion.

6. The cutting device for solid wood composite flooring according to claim 5, characterized in that, The heights of the transverse rolling cut assembly (20) and the longitudinal rolling cut assembly (40) are adjustable.

7. A method of using the cutting device for solid wood composite flooring as described in claim 6, characterized in that, Includes the following steps: S100, Large Plate Lateral Conveying The large plate is adsorbed by an adsorption robot and transported to the transverse roller conveyor belt (101). The large plate is attached to the transverse side guide wheel group (102) by the inclined roller (1011) of the transverse roller conveyor belt (101). The longitudinal roller (1012) and the transverse side guide wheel group (102) transport the large plate horizontally. S200, transverse roll cutting The transverse drive motor (23) drives the transverse transmission shaft (21) to rotate via the coupling. The front friction wheel steadily conveys the large plate to the rear. During the conveying process, the transverse cutting blade (24) and the transverse rolling roller (25) complete the transverse cutting and roll the seam at the cutting seam to obtain the arc-shaped chamfered transverse seam. S300, longitudinal conveyor The rear friction wheel and longitudinal roller (1012) transport the transversely cut slab to the inclined roller two (33) of the longitudinal roller conveyor belt (31), and then attach it to the longitudinal side guide wheel group (32) via the inclined roller two (33). The transverse roller (34) and the longitudinal side guide wheel group (32) transport the large plate horizontally longitudinally. S400, longitudinal roll cutting The longitudinal drive motor (43) drives the longitudinal transmission shaft (41) to rotate via the coupling. The front friction wheel steadily conveys the large plate to the rear side. During the conveying process, the longitudinal cutting blade (44) and the longitudinal rolling roller (45) complete the longitudinal cutting and the rolling at the cutting seam to obtain the arc-shaped chamfered longitudinal seam, thus obtaining the plate blank. The rear friction wheel and the transverse roller (34) transport the slab to the stacking area for unified stacking.

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