Wood product circle cutting machine

Abstract

The invention relates to a wood product circle cutting machine which comprises an upper saw cutting set, a lower saw cutting set and a lifting module. The upper saw cutting set is arranged on the upper portion of the lower saw cutting set, a gap is reserved between the upper saw cutting set and the lower saw cutting set, the upper saw cutting set and the lower saw cutting set are both arranged on the saw set inner frame, the lifting module is arranged on the saw set outer frame, the saw set outer frame is located on an outer ring of the saw set inner frame, and the lifting module drives the saw set inner frame to move up and down. According to the woodwork circle cutting device, the circle cutting procedure of the woodwork is completed through two circle cutting operations of the upper saw cutting set and the lower saw cutting set, compared with a band-sawing machine used for cutting the woodwork in the market, the circle cutting machine effectively prevents burrs from being generated on the cutting edge of the woodwork, smoothness and regularity during circle cutting of the woodwork are guaranteed, and the production efficiency is improved. And the quality of woodwork circle cutting is ensured.

Description

Technical Field

[0001] The invention relates to mechanical equipment, in particular to a wood product circular cutting machine. Background Art

[0002] At present, the circular cutting process of wood products is realized by small band saw machines in the market. Its operating principle is to use upper and lower saw wheels to drive the saw teeth of the band saw blade to cut circles. Its disadvantages are: the band saw machine adopts reverse milling cutting operation mode. Due to the material characteristics of wood, the force of the saw blade when cutting is peeled upward from the surface of the material. The direction of this force will cause the fibers on the surface of the wood to be "lifted up", especially when the saw blade leaves the wood, it is easy to cause the fibers to tear or break, thus generating burrs; because wood is a natural material composed of longitudinal fibers, during reverse milling, the advancing direction of the saw blade cutting is in conflict with the fiber direction, making the fibers easy to be torn rather than cut smoothly, which aggravates the generation of burrs; in addition, during reverse milling, the saw blade will "slip" a short distance with the wood at the beginning of cutting, instead of cutting directly into it. This sliding will further destroy the fiber structure of the wood, resulting in uneven edges. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present invention provides a wood product circular cutting machine.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a wood product circular cutting machine, comprising an upper sawing group, a lower sawing group and a lifting module;

[0005] The upper sawing group is arranged on the upper part of the lower sawing group, and a distance is left between the upper sawing group and the lower sawing group. The upper sawing group and the lower sawing group are both arranged on the inner frame of the sawing group. The lifting module is arranged on the outer frame of the sawing group. The outer frame of the sawing group is located at the outer circle of the inner frame of the sawing group, and the lifting module drives the inner frame of the sawing group to move up and down.

[0006] The cutting rotation direction of the upper sawing group and the lower sawing group is consistent with the feeding direction of the wood products.

[0007] In a preferred embodiment of the present invention, the upper sawing group includes an upper sawing motor and an upper saw blade, the upper sawing motor is arranged on an upper motor fixing plate, the upper motor fixing plate is connected to the inner frame of the saw group, and the upper sawing motor is connected to the upper saw blade;

[0008] The lower sawing group includes a lower sawing motor and a lower saw blade. The lower sawing motor is arranged on a lower motor fixing plate. The lower motor fixing plate is connected to the inner frame of the saw group. The lower sawing motor is connected to the lower saw blade.

[0009] In a preferred embodiment of the present invention, the lifting module includes a lifting motor, a reducer, a driving gear, a rack and a lifting slide rail;

[0010] The lifting motor is arranged on the outer frame of the saw group, and the lifting motor is connected to the reducer. The reducer is provided with driving teeth, and the driving teeth are meshed with the rack. The rack is vertically arranged on the outer wall of the inner frame of the saw group; a lifting slide rail is arranged on the inner wall of the outer frame of the saw group, and a lifting slider matching the lifting slide rail is also arranged on the outer wall of the inner frame of the saw group.

[0011] In a preferred embodiment of the present invention, an angle adjustment module is further provided on the inner frame of the saw group, and the angle adjustment module is respectively connected to the upper sawing group and the lower sawing group; the angle adjustment module comprises an angle adjustment screw motor, an upper screw, a lower screw, an upper screw slider and a lower screw slider, the upper screw is provided with a positive thread, the upper screw slider is arranged on the upper screw, and the upper screw slider is connected to one end of the upper sawing group, and the other end of the upper sawing group is rotatably connected to the inner frame of the saw group;

[0012] The lower screw rod is provided with a reverse thread, the lower screw rod slider is arranged on the lower screw rod, and the lower screw rod slider is connected to one end of the lower sawing group, and the other end of the lower sawing group is rotatably arranged on the inner frame of the saw group.

[0013] In a preferred embodiment of the present invention, it further comprises a frame, on which a positioning module is provided, and the frame is arranged at one end of the inner frame of the saw assembly.

[0014] The positioning module comprises a positioning platform, a positioning frame, a positioning motor, and a positioning screw, wherein the positioning motor is connected to the positioning screw, the positioning frame is arranged on the positioning screw, and the positioning platform is rotatably arranged on the positioning frame;

[0015] Positioning guide rails are respectively arranged on both sides of the positioning screw rod on the frame, and the positioning frame is matched and arranged in the positioning guide rails through positioning slide blocks.

[0016] In a preferred embodiment of the present invention, a feeding module is further provided on one end of the frame close to the outer frame of the saw group; the feeding module comprises a feeding motor and a feeding roller, and the feeding motor is connected to the feeding roller;

[0017] A clamping auxiliary feeding module is also provided above the feeding module, and the clamping auxiliary feeding module includes a clamping cylinder, a clamping frame and a clamping wheel, wherein the clamping cylinder is provided on the clamping frame, and the clamping wheel is provided on the clamping frame, and the clamping wheel faces the feeding roller;

[0018] The outer frame of the saw group is provided with a clamping slide rail, and the clamping frame is provided with a clamping slide block matching the clamping slide rail.

[0019] In a preferred embodiment of the present invention, the upper saw blade and the lower saw blade run in opposite directions, and both the upper saw blade and the lower saw blade are bowl-shaped structures, and the outer edges of the upper saw blade and the lower saw blade are circumferentially provided with a plurality of saw teeth, and two adjacent saw teeth are staggered obliquely to the left and to the right, respectively.

[0020] In a preferred embodiment of the present invention, a cover plate is provided on the lower sawing group, and an extension hole is provided on the cover plate for the lower saw blade to extend out;

[0021] A lower dust cover is provided at the lower part of the lower saw blade, and an upper dust cover is provided at the top of the upper saw blade.

[0022] The beneficial effects of the present invention are as follows: compared with the existing band saw machine which adopts the reverse milling cutting operation mode, which causes a large number of burrs at the lower end of the sawing surface and the irregular circular shape of the cut product, the present application adopts the forward milling cutting mode in which the cutting rotation direction of the upper sawing group and the lower sawing group is consistent with the feeding direction of the wood product, especially when processing thinner or easily torn wood, it effectively avoids the generation of burrs on the cutting edge of the wood product, ensures the smoothness and regularity of the wood product when cutting the circle, and ensures the quality of the wood product cutting circle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0024] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0025] Figure 3 It is a schematic diagram of the connection structure of the upper sawing group and the lower sawing group with the angle adjustment module of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the upper sawing group, the lower sawing group and the angle adjustment module of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the lower saw blade of the present invention;

[0028] Figure 6 It is a schematic diagram of the lifting module structure of the present invention;

[0029] Figure 7 It is a schematic diagram of the outer frame structure of the saw assembly of the present invention;

[0030] Figure 8 It is a schematic diagram of the positional relationship among the positioning module, the feeding module, the upper sawing group and the lower sawing group of the present invention;

[0031] Fig. 9 It is a schematic diagram of the positional relationship between the feeding module and the pressing auxiliary feeding module of the present invention;

[0032] Fig.10 It is a schematic diagram of the structure of the feeding module and the pressing auxiliary feeding module of the present invention;

[0033] Fig.11 1. It is a schematic diagram of the structure of an upper dust hood and a lower dust hood;

[0034] Fig.12 It is a schematic diagram of the cutting direction of the upper saw blade and the lower saw blade and the conveying direction of the wood products;

[0035] In the figure: frame 1; positioning module 2; positioning table 201; positioning frame 202; positioning motor 203; positioning screw rod 204; positioning guide rail 205; positioning slide block 206; feeding module 3; feeding motor 301; feeding roller 302; upper sawing group 4; upper sawing motor 401; upper saw blade 402; upper motor fixing plate 403; lower sawing group 5; lower sawing motor 501; lower saw blade 502; lower motor fixing plate 503; lifting module 6; lifting motor 601; reducer 602; driving gear 603; rack 604; lifting slide rail 605; lifting slider 606; angle adjustment module 7; angle adjustment screw motor 701; upper screw 702; lower screw 703; upper screw slider 704; lower screw slider 705; saw group inner frame 8; saw group outer frame 9; clamping auxiliary feeding module 10; clamping cylinder 1001; clamping frame 1002; clamping wheel 1003; clamping slide rail 1004; clamping slider 1005; cover plate 11; extension hole 1101; lower dust hood 12; upper dust hood 13. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0038] like Figures 1 to 12 A wood product circular cutting machine shown includes an upper sawing group 4, a lower sawing group 5 and a lifting module 6;

[0039] The upper sawing group 4 is arranged on the upper part of the lower sawing group 5, and a distance is left between the upper sawing group 4 and the lower sawing group 5. The upper sawing group 4 and the lower sawing group 5 are both arranged on the saw group inner frame 8. The lifting module 6 is arranged on the saw group outer frame 9. The saw group outer frame 9 is located at the outer circle of the saw group inner frame 8, and the lifting module 6 drives the saw group inner frame 8 to move up and down.

[0040] The cutting rotation direction of the upper sawing group 4 and the lower sawing group 5 is consistent with the feeding direction of the wood products.

[0041] When the wood product circular cutting machine of the present invention is in use, the wood product to be circularly cut is first placed between the upper sawing group 4 and the lower sawing group 5, and the inner frame 8 of the saw group is driven to move upward by the lifting module 6, so that the inner frame 8 of the saw group drives the upper sawing group 4 and the lower sawing group 5 to move upward, so that the lower sawing group 5 contacts the wood product, and the lower sawing group 5 is started to circularly cut the wood product from bottom to top. When the lower sawing group 5 cuts to half the thickness of the wood product, the cutting is stopped, and then the inner frame 8 of the saw group is driven to move downward by the lifting module 6, so that the upper sawing group 4 and the lower sawing group 5 move downward until the upper sawing group 4 contacts the wood product, and the circular cutting operation of the wood product is completed. When the upper sawing group cuts to half the thickness of the wood product, the circular cutting process of the wood product is completed. In the present application, the cutting rotation direction of the upper sawing group 4 and the lower sawing group 5 is consistent with the feeding direction of the wood product, that is, the wood product is cut by the upper sawing group 4 and the lower sawing group 5 in a forward milling manner, which is beneficial to avoid burrs on the cut edges of the wood products caused during the cutting process, ensure the smoothness of the cut edges of the wood products, and ensure that the cut circular shapes of the wood products are regular.

[0042] The wood product circular cutting device of the present invention completes the circular cutting process of the wood product through two circular cutting operations of the upper sawing group 4 and the lower sawing group 5. Compared with the single saw blade on the market that cuts the material, this product has high automation, simple operation, high safety, and can effectively save time and labor costs.

[0043] As a preferred embodiment, the upper sawing group 4 in the present application includes an upper sawing motor 401 and an upper saw blade 402, wherein the upper sawing motor 401 is arranged on an upper motor fixing plate 403, wherein the upper motor fixing plate 403 is connected to the saw group inner frame 8, and the upper sawing motor 401 is connected to the upper saw blade 402;

[0044] The lower sawing group 5 includes a lower sawing motor 501 and a lower saw blade 502 . The lower sawing motor 501 is arranged on a lower motor fixing plate 503 . The lower motor fixing plate 503 is connected to the saw group inner frame 8 . The lower sawing motor 501 is connected to the lower saw blade 502 .

[0045] When the wood product is to be cut into a circle, the inner frame 8 of the saw group is first driven upward by the lifting module 6. Since the lower sawing motor 501 is arranged on the lower motor fixing plate 503, and the lower motor fixing plate 503 is connected to the inner frame 8 of the saw group, the lifting module 6 drives the inner frame 8 of the saw group to rise, thereby driving the lower motor fixing plate 503, and then realizing the lower sawing motor 501 and the lower saw blade 402 to rise until the lower saw blade 402 contacts the bottom end of the round wood product to be cut, and then starts the lower saw blade motor 501, and drives the lower saw blade 502 to rotate through the lower saw blade motor 501, so as to realize the upward cutting of the wood product from bottom to top. Perform the circular cutting operation, when the lower saw blade 502 cuts to half the thickness of the wood product, stop cutting, and drive the saw group inner frame 8 to descend through the lifting module 6. At this time, the lower saw blade escapes from the wood product. At the same time, the downward movement of the saw group inner frame 8 also drives the upper motor fixing plate 403 to move downward, thereby realizing the downward movement of the upper saw blade motor 401 and the upper saw blade 402. When the upper saw blade 402 contacts the top of the wood product, start the upper saw blade motor 401, and drive the upper saw blade 402 to rotate through the upper saw blade motor 401 to realize the circular cutting operation on the wood product. When the upper saw blade cuts to half the thickness of the wood product, the circular cutting process of the wood product is completed.

[0046] Compared with traditional circular cutting machines, this product includes two processes, the upper and lower ends of the product can be cut separately. It is highly automated, easy to operate, highly safe, and can effectively save time and labor costs.

[0047] As a preferred embodiment, the lifting module 6 in the present application includes a lifting motor 601, a reducer 602, a driving gear 603, a rack 604 and a lifting rail 605;

[0048] The lifting motor 601 is arranged on the outer frame 9 of the saw group, and the lifting motor 601 is connected to the reducer 602. The reducer 602 is provided with a driving tooth 603, and the driving tooth 603 is engaged with the rack 604. The rack 604 is vertically arranged on the outer wall of the inner frame 8 of the saw group; a lifting slide rail 605 is provided on the inner wall of the outer frame 9 of the saw group, and a lifting slider 606 matching the lifting slide rail 605 is also provided on the outer wall of the inner frame 8 of the saw group.

[0049] When it is necessary to drive the inner frame 8 of the saw group to descend or ascend, start the lifting motor 601, and the lifting motor 601 drives the reducer 602 to rotate, thereby realizing the reducer 602 driving the driving gear 603 to operate. Since the driving gear 603 is meshed with the rack 604, the driving rack 604 rises or falls during the rotation of the driving gear 603. Since the rack 604 is arranged on the outer wall of the inner frame 8 of the saw group, the inner frame 8 of the saw group is raised or lowered, thereby realizing the rise or fall of the upper sawing group 4 and the lower sawing group 5, and finally realizing the circular cutting of the wooden products from bottom to top or from top to bottom.

[0050] As a preferred embodiment, the saw group inner frame 8 in the present application is further provided with an angle adjustment module 7, and the angle adjustment module 7 is respectively connected to the upper sawing group 4 and the lower sawing group 5; the angle adjustment module 7 includes an angle adjustment screw motor 701, an upper screw rod 702, a lower screw rod 703, an upper screw rod slider 704 and a lower screw rod slider 705, the angle adjustment screw motor 701 is connected to the upper screw rod 702 and the lower screw rod 703, the upper screw rod 702 is provided with a positive thread, the upper screw rod slider 704 is arranged on the upper screw rod 703, and the upper screw rod slider 704 is connected to one end of the upper sawing group 4, and the other end of the upper sawing group 4 is rotatably connected to the saw group inner frame 8;

[0051] The lower screw rod 703 is provided with a reverse thread, the lower screw rod slider 705 is arranged on the lower screw rod 703, and the lower screw rod slider 705 is connected to one end of the lower sawing group 5, and the other end of the lower sawing group 5 is rotatably arranged on the saw group inner frame 8.

[0052] Since the diameters of the circles when wood products are cut into circles are different, it is necessary to adjust the angle of the wood product cutting circle, thereby improving the adaptability of the upper and lower sawing groups to cutting circles of different diameters of wood products. When it is necessary to adjust the angle of the wood product cutting circle, first start the angle adjustment screw motor 701 to rotate forward or reverse, then the angle adjustment screw motor 701 drives the upper screw rod 702 and the lower screw rod 703 to rotate forward or reverse, since the upper screw rod slider 704 is arranged on the upper screw rod 703, the lower screw rod slider 705 is arranged on the lower screw rod 703, and the upper screw rod 702 is provided with a positive thread, and the lower screw rod 703 is provided with a reverse thread, then during the rotation of the upper screw rod 702 and the lower screw rod 703, the upper screw rod slider 704 and the lower screw rod slider 705 are in a synchronous action of approaching or moving away from each other, and since the other end of the upper sawing group 4 is rotatably connected to the saw group inner frame 8, and the other end of the lower sawing group 5 is rotatably arranged on the saw group inner frame 8, the angle adjustment of the upper sawing group and the lower sawing group is finally realized, and the angle adjustment of the upper saw blade 402 and the lower saw blade 502 is finally realized, thereby adapting to the circle cutting operation of wood products with different diameters, and improving the adaptability of the wood product circular cutting machine.

[0053] As a preferred embodiment, the wood product circular cutting machine in the present application further comprises a frame 1, on which a positioning module 2 is provided, and the frame 1 is arranged at one end of the inner frame 8 of the saw group.

[0054] The positioning module 2 includes a positioning platform 201, a positioning frame 202, a positioning motor 203, and a positioning screw 204. The positioning motor 203 is connected to the positioning screw 204. The positioning frame 202 is arranged on the positioning screw 204. The positioning platform 201 is rotatably arranged on the positioning frame 202.

[0055] Positioning guide rails 205 are provided on both sides of the positioning screw rod 204 on the frame 1 , and the positioning frame 202 is matchedly arranged in the positioning guide rails 205 through positioning sliders 206 .

[0056] When the wooden product is cut into a circle, the positioning module 2 is used to support and position the wooden product, and during the continuous cutting of the wooden product, the positioning table 201 is rotated along the positioning frame 202 to realize the rotation operation of the wooden product, thereby realizing the cutting of the wooden product into a circle; when the size of the wooden product is different, it is necessary to adjust the position of the positioning table 201 to realize the support of the wooden product, and the positioning motor 203 is started, and the positioning motor 203 rotates to drive the positioning screw rod 204 to rotate, and the positioning frame 202 is set on the positioning screw rod 204. During the rotation of the positioning screw rod 204, the positioning frame 202 moves along the positioning screw rod 20. During the movement of the positioning frame 202, the positioning slider 206 moves synchronously along the positioning guide rail 205, thereby improving the stability of the movement of the positioning frame 202, thereby realizing the movement of the position of the positioning table 201, facilitating the positioning table 201 to support and rotate wooden products of different sizes, and improving the applicability of the positioning module 2 to the cutting of wooden products of different sizes.

[0057] In a preferred embodiment of the present invention, a feeding module 3 is further provided on one end of the frame 1 of the wood product circular cutting machine in the present application, which is close to the inner frame 8 of the saw group; the feeding module 3 includes a feeding motor 301 and a feeding roller 302, the feeding motor 301 is connected to the feeding roller 302, and the feeding motor 301 is arranged on one side of the frame 1;

[0058] A clamping auxiliary feeding module 10 is also provided above the feeding module 3. The clamping auxiliary feeding module 10 includes a clamping cylinder 1001, a clamping frame 1002 and a clamping wheel 1003. The clamping cylinder 1001 is provided on the clamping frame 1002. The clamping wheel 1003 is provided on the clamping frame 1002. The clamping wheel 1003 faces the feeding roller 302.

[0059] The saw assembly outer frame 9 is provided with a clamping slide rail 1004 , and the clamping frame 1002 is provided with a clamping slider 1005 matching the clamping slide rail 1004 .

[0060] In the process of cutting the wood products, the wood product circular cutting machine of the present application continuously drives the wood products to rotate through the feeding module 3, thereby realizing the circular cutting operation of the wood products, and thus improving the circular cutting efficiency of the wood products. Specifically, the wood products to be circularly cut are placed on the feeding module 3, and the feeding motor 301 is started. Then the feeding motor 301 drives the feeding roller 302 to rotate. During the rotation of the feeding roller 302, the rotation of the wood products in the circular cutting is driven to realize the circular cutting process of the wood products. A clamping auxiliary feeding module 10 is also provided above the feeding module 3, that is, during the rotation of the wood products by the feeding mold 3, the wood products are pressed by the clamping auxiliary feeding module 10 to prevent the wood products from being deformed during the feeding and circular cutting process. Displacement, specifically, driving the clamping cylinder 1001, the clamping cylinder 1001 drives the clamping frame 1002 to move downward, and then drives the clamping wheel 1003 to move downward, so that the clamping wheel 1003 contacts the wood product and applies pressure to the wood product. By starting the feeding motor 301, the feeding motor 301 drives the feeding roller 302 to rotate, and then drives the driven wheel clamping wheel 1003 to rotate, thereby ensuring the stability of the feeding module 3 in the process of driving the wood product to rotate, thereby improving the efficiency of cutting the wood product into a circle.

[0061] In a preferred embodiment of the present invention, the upper saw blade 402 and the lower saw blade 502 run in opposite directions, and at the same time, the cutting rotation direction of the upper saw blade 402 and the lower saw blade 502 is consistent with the feeding direction of the wood product. Compared with the existing band saw machine adopts the reverse milling cutting operation mode, which causes the material to shake or tear, a large number of burrs are generated at the lower end of the sawing surface, and the circular shape of the cut product is irregular, the present application adopts the cutting rotation direction of the upper saw blade 402 and the lower saw blade 502 to be consistent with the feeding direction of the wood product, that is, the forward milling cutting mode. Especially when processing thinner or easily torn wood, burrs on the cutting edge of the wood product are effectively avoided, the smoothness and regularity of the wood product cutting circle are ensured, and the quality of the wood product cutting circle is ensured.

[0062] The upper saw blade 402 and the lower saw blade 502 are both bowl-shaped structures, and the outer edges of the upper saw blade 402 and the lower saw blade 502 are both circumferentially provided with a plurality of saw teeth, and two adjacent saw teeth are staggered obliquely to the left and right, respectively. Compared with the situation where the saw teeth are not staggered, the saw blade will be very close to the wood when sawing wood, making it difficult to saw, and the friction between the saw blade and the wood will increase, thereby increasing the heat, and finally causing the saw blade to break. Compared with the situation where the adjacent saw teeth are staggered obliquely to the left and right, respectively, when sawing wood, the sawing seam will be quite wide, which not only saves a lot of effort to pull back and forth, but also reduces friction, and thus prolongs the life of the upper and lower saw blades.

[0063] The lower sawing group 5 is provided with a cover plate 11, and the cover plate 11 is provided with an extension hole 1101 for the lower saw blade 502 to extend out; the setting of the cover plate 11 realizes the support function of the wooden product;

[0064] A lower dust hood 12 is provided at the lower part of the lower saw blade 502, and an upper dust hood 13 is provided at the top of the upper saw blade 402. The upper dust hood 13 and the lower dust hood 12 are both connected to a dust bag and a dust motor. The arrangement of the upper dust hood 12 and the lower dust hood 13 can prevent wood chips and dust from spilling out during the circle cutting process of wood products, thereby ensuring the cleanliness of the working environment for circle cutting of wood products and reducing environmental pollution.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "certain embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0066] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A wood product circular cutting machine, characterized in that: It comprises an upper sawing group (4), a lower sawing group (5) and a lifting module (6); The upper sawing group (4) is arranged on the upper part of the lower sawing group (5), and a distance is left between the upper sawing group (4) and the lower sawing group (5), the upper sawing group (4) and the lower sawing group (5) are both arranged on the sawing group inner frame (8), the lifting module (6) is arranged on the sawing group outer frame (9), the sawing group outer frame (9) is located at the outer circle of the sawing group inner frame (8), and the lifting module (6) drives the sawing group inner frame (8) to move up and down; The cutting rotation direction of the upper sawing group (4) and the lower sawing group (5) is consistent with the feeding direction of the wood products.

2. The wood product circular cutting machine according to claim 1, characterized in that: The upper sawing group (4) comprises an upper sawing motor (401) and an upper saw blade (402); the upper sawing motor (401) is arranged on an upper motor fixing plate (403); the upper motor fixing plate (403) is connected to the sawing group inner frame (8); and the upper sawing motor (401) is connected to the upper saw blade (402); The lower sawing group (5) comprises a lower sawing motor (501) and a lower saw blade (502); the lower sawing motor (501) is arranged on a lower motor fixing plate (503); the lower motor fixing plate (503) is connected to the saw group inner frame (8); and the lower sawing motor (501) is connected to the lower saw blade (502).

3. The wood product circular cutting machine according to claim 1, characterized in that: The lifting module (6) comprises a lifting motor (601), a reducer (602), a driving tooth (603), a rack (604) and a lifting slide rail (605); The lifting motor (601) is arranged on the outer frame (9) of the saw group, and the lifting motor (601) is connected to the reducer (602). The reducer (602) is provided with a driving tooth (603), and the driving tooth (603) is meshed with the rack (604). The rack (604) is vertically arranged on the outer wall of the inner frame (8) of the saw group; a lifting slide rail (605) is arranged on the inner wall of the outer frame (9) of the saw group, and a lifting slider (606) matching the lifting slide rail (605) is also arranged on the outer wall of the inner frame (8) of the saw group.

4. The wood product circular cutting machine according to claim 1, characterized in that: The saw group inner frame (8) is also provided with an angle adjustment module (7), and the angle adjustment module (7) is respectively connected to the upper sawing group (4) and the lower sawing group (5); the angle adjustment module (7) comprises an angle adjustment screw motor (701), an upper screw (702), a lower screw (703), an upper screw slider (704) and a lower screw slider (705); the upper screw (702) is provided with a positive thread, the upper screw slider (704) is arranged on the upper screw (703), and the upper screw slider (704) is connected to one end of the upper sawing group (4), and the other end of the upper sawing group (4) is rotatably connected to the saw group inner frame (8); The lower screw rod (703) is provided with a reverse thread, the lower screw rod slider (705) is arranged on the lower screw rod (703), and the lower screw rod slider (705) is connected to one end of the lower sawing group (5), and the other end of the lower sawing group (5) is rotatably arranged on the sawing group inner frame (8).

5. The wood product circular cutting machine according to claim 1, characterized in that: It also comprises a frame (1), on which a positioning module (2) is provided, and the frame (1) is arranged at one end of an inner frame (8) of the saw assembly. The positioning module (2) comprises a positioning platform (201), a positioning frame (202), a positioning motor (203), and a positioning screw (204); the positioning motor (203) is connected to the positioning screw (204); the positioning frame (202) is arranged on the positioning screw (204); and the positioning platform (201) is rotatably arranged on the positioning frame (202); Positioning guide rails (205) are also provided on both sides of the positioning screw rod (204) on the frame (1), and the positioning frame (202) is matchedly arranged in the positioning guide rails (205) via positioning sliders (206).

6. The wood product circular cutting machine according to claim 5, characterized in that: A feeding module (3) is also provided on one end of the frame (1) close to the saw assembly outer frame (9); the feeding module (3) comprises a feeding motor (301) and a feeding roller (302), and the feeding motor (301) is connected to the feeding roller (302); A clamping auxiliary feeding module (10) is also provided above the feeding module (3), and the clamping auxiliary feeding module (10) comprises a clamping cylinder (1001), a clamping frame (1002) and a clamping wheel (1003), wherein the clamping cylinder (1001) is arranged on the clamping frame (1002), and the clamping wheel (1003) is provided on the clamping frame (1002), and the clamping wheel (1003) faces the feeding roller (302); The saw assembly outer frame (9) is provided with a clamping slide rail (1004), and the clamping frame (1002) is provided with a clamping slide block (1005) matching the clamping slide rail (1004).

7. The wood product circular cutting machine according to claim 2, characterized in that: The upper saw blade (402) and the lower saw blade (502) run in opposite directions, and both the upper saw blade (402) and the lower saw blade (502) are bowl-shaped structures. The outer edges of the upper saw blade (402) and the lower saw blade (502) are both circumferentially provided with a plurality of saw teeth, and two adjacent saw teeth are staggered obliquely to the left and to the right, respectively.

8. The wood product circular cutting machine according to any one of claims 1 to 7, characterized in that: The lower sawing group (5) is provided with a cover plate (11), and the cover plate (11) is provided with an extension hole (1101) for the lower saw blade (502) to extend out; A lower dust cover (12) is provided at the lower part of the lower saw blade (502), and an upper dust cover (13) is provided at the top of the upper saw blade (402).

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