Size-adjustable wood board cutting device

Abstract

The utility model discloses a size-adjustable wood board cutting device, and relates to the technical field of cutting equipment. The feeding mechanism is arranged on the machine frame; the limiting mechanism is connected to the upper end of the feeding mechanism, and a pair of limiting modules of the limiting mechanism can clamp a wood board; the cutting mechanism is arranged on the machine frame and located above the limiting mechanism, and the cutting mechanism is used for cutting a wood board; a pair of dust collection nozzles of the dust collection mechanism extend to the positions of the pair of limiting modules, and the dust collection mechanism can collect wood chips generated during cutting; and the guide mechanisms are connected with the corresponding dust collection nozzles, the guide mechanisms can drive the corresponding dust collection nozzles to move front and back, and therefore the dust collection range is enlarged, and the dust collection device has the beneficial effects of being convenient to operate, safe, reliable and precise in machining.

Description

Technical Field

[0001] The present application relates to the technical field of cutting equipment, and in particular to a size-adjustable wood board cutting device. Background Art

[0002] When using boards, they need to be cut according to actual conditions to obtain small boards of different sizes. In existing practical applications, board cutting is mostly done by manual feeding, so the feeding error is large, resulting in low cutting accuracy. In addition, cutting wood boards will produce a large amount of sawdust, and the flying sawdust will cause serious harm to the workers.

[0003] Therefore, it is necessary to improve the existing cutting equipment. Utility Model Content

[0004] In view of this, the present application provides a size-adjustable wood board cutting device that can feed stably and can adsorb wood chips to solve the technical problems in the prior art such as large feeding errors, low cutting accuracy, and flying wood chips that affect health.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A size-adjustable wood board cutting device, comprising:

[0007] frame;

[0008] A feeding mechanism, wherein the feeding mechanism is arranged on the frame;

[0009] A limiting mechanism, wherein the limiting mechanism is connected to the upper end of the feeding mechanism, and a pair of limiting modules of the limiting mechanism can clamp the wooden board;

[0010] A cutting mechanism, which is arranged on the frame and located above the limiting mechanism, and is used for cutting the wood board;

[0011] A dust suction mechanism, wherein a pair of dust suction nozzles of the dust suction mechanism extend to a pair of limit modules, and the dust suction mechanism can collect wood chips generated during cutting;

[0012] A pair of guide mechanisms are connected to corresponding dust suction nozzles, and the guide mechanisms can drive the corresponding dust suction nozzles to move forward and backward, thereby expanding the dust suction range.

[0013] Furthermore, the feeding mechanism comprises:

[0014] a first motor, the first motor being mounted in a mounting slot of the frame;

[0015] A screw rod, the screw rod is connected to an output end of the first motor;

[0016] A guide rod, the guide rod being arranged in the mounting groove;

[0017] A slide seat is threadedly connected to the lead screw, and the slide seat is slidably matched with the guide rod.

[0018] Furthermore, the limiting mechanism further includes:

[0019] an installation box connected to the slide seat;

[0020] a first hydraulic cylinder, the first hydraulic cylinder being disposed on the top of the mounting box;

[0021] A pair of rectangular blocks are symmetrically connected to the lower end of the first hydraulic cylinder, and the rectangular blocks are slidably matched with the corresponding limiting modules.

[0022] Furthermore, the limit module includes:

[0023] A rotating arm, the rotating arm being hinged in the installation box;

[0024] A movable plate, the movable plate being slidably disposed in the installation box;

[0025] A mounting plate, wherein the mounting plate is mounted on the movable plate, and the upper and lower ends of the rotating arm are respectively slidably connected between the mounting plate and the rectangular block;

[0026] A clamping block is connected to the upper end of the movable plate, and is used for clamping the wooden board.

[0027] Furthermore, a first guide groove is provided on the rectangular block, a first convex shaft is provided at the lower end of the rotating arm, the first convex shaft is slidably matched with the first guide groove, a second guide groove is provided at the upper end of the rotating arm, a second convex shaft is provided on the mounting plate, and the second convex shaft is slidably matched with the second guide groove.

[0028] Furthermore, the cutting mechanism comprises:

[0029] a second hydraulic cylinder, the second hydraulic cylinder being disposed on the frame;

[0030] A connecting frame connected to an output end of the second hydraulic cylinder;

[0031] A cutting blade, the cutting blade being rotatably connected to the lower end of the connecting frame;

[0032] A pair of vertical rods, the pair of vertical rods are symmetrically arranged on the frame, and the cutting blade is slidably matched with the pair of vertical rods;

[0033] A pair of first compression springs, wherein the first compression springs are sleeved on the corresponding vertical rods, and the first compression springs are supported between the connecting frame and the vertical rods.

[0034] Furthermore, the dust collection mechanism also includes:

[0035] A dust collection box, wherein the dust collection box is arranged on the frame;

[0036] A pair of negative pressure fans, the pair of negative pressure fans are symmetrically connected to two sides of the dust collection box;

[0037] A pair of dust suction pipe assemblies are connected to the corresponding negative pressure fans, and the dust suction nozzles are connected to the lower ends of the corresponding dust suction pipe assemblies.

[0038] Furthermore, the dust suction pipe assembly includes:

[0039] A first dust suction pipe, wherein the first dust suction pipe is connected to the corresponding negative pressure fan;

[0040] A connecting hose connected to the lower end of the corresponding first dust suction pipe;

[0041] A second dust suction pipe is connected to the connecting hose through a fixing tube, and the dust suction nozzle is connected to the lower end of the second dust suction pipe.

[0042] Furthermore, the guiding mechanism comprises:

[0043] A fixed box, the fixed box being fixed on the frame via a support plate;

[0044] a second motor, the second motor being mounted in the fixed box;

[0045] a rotating rod connected to an output end of the second motor;

[0046] A rectangular slide rail, wherein the rectangular slide rail is movably connected to the rotating rod;

[0047] A convex rod connected to the front end of the rectangular slide rail;

[0048] A connecting rod is connected between the protruding rod and the corresponding fixing cylinder.

[0049] Furthermore, two limiting rollers are arranged at intervals in the upper and lower parts on the left side of the fixed box, and the protruding rod is supported between the two limiting rollers.

[0050] It can be seen from the above technical solution that the advantages of the utility model are:

[0051] 1. In the present application, a limiting mechanism is provided, and the movement of the limiting mechanism is controlled by the feeding mechanism, so that the limiting mechanism can feed stably, thereby ensuring the cutting accuracy of the wooden board and improving the cutting quality.

[0052] 2. The limiting mechanism in the present application can clamp wooden boards of different sizes, which is not only reliable but also has a wide range of uses.

[0053] 3. In the present application, the height position of the cutting mechanism can be adjusted, so it can be used for wooden boards of different thicknesses.

[0054] 4. In the present application, the sawdust is adsorbed by the dust collecting mechanism, which can improve the processing environment, reduce the harm to the workers' bodies, and make the use safer.

[0055] 5. In the present application, the guide mechanism can drive the dust collection mechanism to move horizontally, thereby improving the dust collection efficiency, making the work efficiency higher and the dust collection effect better. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0057] Figure 1 This is a schematic diagram of the structure of this application.

[0058] Figure 2 This is a schematic diagram of the structure of the limiting mechanism of this application.

[0059] Figure 3 for Figure 2 AA view of the .

[0060] Figure 4 for Figure 1 A partial enlarged view of point B.

[0061] Figure 5 for Figure 4 A partial enlarged view of point C.

[0062] Figure 6 for Figure 5 DD view.

[0063] Description of the accompanying drawings: support 1, mounting groove 11, bracket 2, feeding mechanism 3, first motor 31, screw rod 32, guide rod 33, slide seat 34, limiting mechanism 4, installation box 41, first hydraulic cylinder 42, top block 421, rectangular block 43, first guide groove 431, limiting module 44, rotating arm 441, first convex shaft 4411, second guide groove 4412, mounting plate 442, second convex shaft 4421, slide rod 443, vertical plate 444, movable plate 445, clamping block 446, pivot Shaft 447, cutting mechanism 5, connecting frame 51, second hydraulic cylinder 52, cutting blade 53, connecting block 54, vertical rod 55, end plate 551, first compression spring 56, dust suction mechanism 6, dust suction box 61, negative pressure fan 62, first dust suction pipe 63, connecting hose 64, second dust suction pipe 65, dust suction nozzle 66, fixing cylinder 67, guide mechanism 7, support plate 71, fixing box 72, second motor 73, rotating rod 74, rectangular slide rail 75, limiting roller 76, protruding rod 77, connecting rod 78. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the implementation modes and the accompanying drawings. Here, the illustrative implementation modes and descriptions of the present application are used to explain the present application, but are not intended to limit the present application.

[0065] refer to Figures 1 to 6 ,like Figure 1 As shown, this embodiment provides a size-adjustable wooden board cutting device, which includes: a frame, a feeding mechanism 3, a limiting mechanism 4, a cutting mechanism 5, a dust suction mechanism 6 and a pair of guide mechanisms 7, wherein the feeding mechanism 3 is mounted on the frame; the limiting mechanism 4 is connected to the upper end of the feeding mechanism 3, and a pair of limiting modules 44 of the limiting mechanism 4 can clamp the wooden board; the cutting mechanism 5 is mounted on the frame and is located above the limiting mechanism 4, and the cutting mechanism 5 is used for cutting the wooden board; a pair of dust suction nozzles 66 of the dust suction mechanism 6 extend to a pair of limiting modules 44, and the dust suction mechanism 6 can collect wood chips generated during cutting; a pair of guide mechanisms 7 are connected to corresponding dust suction nozzles 66, and the guide mechanisms 7 can drive the corresponding dust suction nozzles 66 to move forward and backward, thereby expanding the dust suction range.

[0066] Preferably, in the embodiment of the present application, the rack includes a base 1 and a bracket 2 , and the bracket 2 is installed on the base 1 .

[0067] like Figure 3As shown, the feeding mechanism 3 includes: a first motor 31, a screw rod 32, a pair of guide rods 33 and a slide seat 34, the first motor 31 is installed in the mounting groove 11 of the support 1; one end of the screw rod 32 is connected to the output end of the first motor 31, and the other end of the screw rod 32 is connected to the bearing seat in the mounting groove 11; a pair of guide rods 33 are arranged in parallel in the mounting groove 11; the slide seat 34 is threadedly connected to the screw rod 32, and the slide seat 34 is slidably matched with the pair of guide rods 33.

[0068] The first motor 31 is a stepping motor.

[0069] In the embodiment of the present application, the first motor 31 drives the screw rod 32 to rotate. Under the guidance and restriction of the guide rod 33, the slide 34 drives the installation box 41 to move backward, so that the limiting mechanism 4 drives the wooden board to feed stably, which can make the position of each feeding more accurate, thereby improving the cutting accuracy.

[0070] like Figure 2 As shown, the limiting mechanism 4 also includes: an installation box 41, a first hydraulic cylinder 42 and a pair of rectangular blocks 43, the installation box 41 is connected to the slide 34; the first hydraulic cylinder 42 is installed on the top of the installation box 41; a pair of rectangular blocks 43 are symmetrically connected to the lower end of the first hydraulic cylinder 42, and the rectangular blocks 43 are slidably matched with the corresponding limiting modules 44.

[0071] Preferably, in the embodiment of the present application, the lower end of the first hydraulic cylinder 42 is connected to a top block 421 , and a pair of rectangular blocks 43 are symmetrically connected to the left and right ends of the top block 421 .

[0072] Preferably, in the embodiment of the present application, two vertical plates 444 are spaced apart at the bottom of the installation box 41, and a slide bar 443 is vertically connected to the upper end of each vertical plate 444, and the slide bar 443 is connected to the side wall of the installation box 41, and the movable plate 445 is slidably connected to the corresponding slide bar 443. By setting the slide bar 443, the movable plate 445 can move more smoothly, thereby achieving a better clamping effect.

[0073] The movable plate 445 extends upward from the installation box 41 and extends out of the installation box 41 .

[0074] In the embodiment of the present application, the limiting module 44 includes: a rotating arm 441, a movable plate 445, a mounting plate 442 and a clamping block 446, the rotating arm 441 is hinged in the mounting box 41 through a pivot shaft 447; the movable plate 445 is slidably arranged in the mounting box 41; the mounting plate 442 is installed on the movable plate 445, and the upper and lower ends of the rotating arm 441 are respectively slidably connected between the mounting plate 442 and the rectangular block 43; the clamping block 446 is connected to the upper end of the movable plate 445, and the clamping block 446 is used to clamp the wooden board.

[0075] Preferably, in the embodiment of the present application, a first guide groove 431 is provided on the rectangular block 43, a first cam 4411 is provided at the lower end of the rotating arm 441, the first cam 4411 is slidably engaged with the first guide groove 431, a second guide groove 4412 is provided at the upper end of the rotating arm 441, a second cam 4421 is installed on the mounting plate 442, and the second cam 4421 is slidably engaged with the second guide groove 4412.

[0076] In the embodiment of the present application, the first hydraulic cylinder 42 is started, driving the top block 421 to move downward, so that a pair of rectangular blocks 43 move downward, and with the cooperation of the first cam 4411 and the first guide groove 431, the rotating arm 441 is pushed to rotate around the pivot shaft 447, so that the upper ends of the pair of rotating arms 441 are close to each other, and then with the cooperation of the second guide groove 4412 and the second cam 4421, a pair of movable plates 445 are pulled close to each other, thereby clamping the wooden board.

[0077] Preferably, in the embodiment of the present application, the first hydraulic cylinder 42 and a pair of rectangular blocks 43 are both arranged in the installation cavity of the installation box 41, and two through holes are symmetrically opened on the top of the installation cavity. The upper end of the movable plate 445 extends upward after passing through the corresponding through holes. When clamping, the wooden board is placed on the top plate of the installation box 41 located between the pair of through holes.

[0078] Preferably, in another embodiment, a placement plate is provided on the top plate, and the wooden board is placed on the placement plate and then clamped, which can prevent the installation box 41 from being damaged during cutting, making it safer to use.

[0079] like Figure 4As shown, the cutting mechanism 5 includes: a second hydraulic cylinder 52, a connecting frame 51, a cutting blade 53, a pair of vertical rods 55 and a pair of first compression springs 56, the second hydraulic cylinder 52 is arranged on the bracket 2; the connecting frame 51 is connected to the output end of the second hydraulic cylinder 52; the cutting blade 53 is rotatably connected to the lower end of the connecting frame 51; a pair of vertical rods 55 are symmetrically arranged on the bracket 2, and the connecting frame 51 is slidably matched with the pair of vertical rods 55; the first compression spring 56 is sleeved on the corresponding vertical rod 55, and the first compression spring 56 is abutted between the connecting frame 51 and the vertical rod 55.

[0080] Preferably, in the embodiment of the present application, both left and right ends of the connecting frame 51 are connected with connecting blocks 54 , and the connecting blocks 54 are slidably matched with the vertical rods 55 .

[0081] Preferably, in the embodiment of the present application, an end plate 551 is installed at the lower end of the vertical rod 55, and the first compression spring 56 is supported between the connecting block 54 and the end plate 551. The first compression spring 56 can provide a buffering effect when the connecting frame 51 drives the connecting block 54 to move downward, thereby making the movement smoother.

[0082] In the embodiment of the present application, the cutting blade 53 is driven to rotate by a motor, and the motor is installed on the connecting frame 51. When cutting, the second hydraulic cylinder 52 drives the connecting frame 51 to move downward, and the connecting frame 51 drives the cutting blade 53 and the motor to move to a suitable height and then stops. Then the motor drives the cutting blade 53 to rotate and start cutting. The moving height of the second hydraulic cylinder 52 can be set according to the thickness of the wooden board.

[0083] like Figure 1 and Figure 4 As shown, the dust collection mechanism 6 also includes: a dust collection box 61, a pair of negative pressure fans 62 and a pair of dust collection pipe assemblies, the dust collection box 61 is installed on the top of the bracket 2; a pair of negative pressure fans 62 are symmetrically connected on both sides of the dust collection box 61; the dust collection pipe assembly is connected to the corresponding negative pressure fan 62, and the dust collection nozzle 66 is connected to the lower end of the corresponding dust collection pipe assembly.

[0084] In the embodiment of the present application, the dust suction pipe assembly includes: a first dust suction pipe 63, a connecting hose 64, and a second dust suction pipe 65. The first dust suction pipe 63 is connected to the corresponding negative pressure fan 62, and the connecting hose 64 is connected to the lower end of the corresponding first dust suction pipe 63; the second dust suction pipe 65 is connected to the connecting hose 64 through a fixing tube 67, and the dust suction nozzle 66 is connected to the lower end of the second dust suction pipe 65. By providing the connecting hose 64, the second dust suction pipe 65 and the dust suction nozzle 66 can move horizontally under the drive of the guide mechanism 7 without affecting the position of the first dust suction pipe 63, thereby being more convenient to use.

[0085] In the embodiment of the present application, wood chips will fly during cutting, and a pair of negative pressure fans 62 are started, and the dust nozzle 66 is close to the cutting position, so that the wood chips are sucked into the dust pipe assembly through the dust nozzle 66 under the negative suction effect of the negative pressure fan 62, and then collected in the dust box 61 through the dust pipe assembly. This can improve the working environment, reduce damage to the body of the staff, and thus be safer to use.

[0086] like Figure 4 , Figure 5 and Figure 6 As shown, the guide mechanism 7 includes: a fixed box 72, a second motor 73, a rotating rod 74, a rectangular slide rail 75, a protruding rod 77 and a connecting rod 78, the fixed box 72 is fixed to the side of the bracket 2 through a support plate 71; the second motor 73 is installed in the fixed box 72; the rotating rod 74 is connected to the output end of the second motor 73; the rectangular slide rail 75 is movably connected to the rotating rod 74; the protruding rod 77 is connected to the front end of the rectangular slide rail 75; the connecting rod 78 is connected between the protruding rod 77 and the corresponding fixed cylinder 67.

[0087] Preferably, in the embodiment of the present application, a guide shaft is provided on the rotating rod 74 , and the guide shaft is slidably connected to the slide groove of the rectangular slide rail 75 .

[0088] like Figure 6 As shown, two limiting rollers 76 are spaced apart at upper and lower intervals on the left side of the fixed box 72, and the convex rod 77 is slidably supported between the two limiting rollers 76. The two limiting rollers 76 can both support the convex rod 77 and limit the movement of the convex rod 77, thereby improving the stability of the movement of the convex rod 77.

[0089] In the embodiment of the present application, the second motor 73 is started to drive the rotating rod 74 to rotate, and the rotating rod 74 drives the rectangular slide rail 75 to move horizontally in the front-to-back direction through the guide shaft, thereby driving the connecting rod 78 to move horizontally in the front-to-back direction through the protruding rod 77. The connecting rod 78 is connected to the fixed cylinder 67, so it can drive the dust nozzle 66 to move horizontally in the front-to-back direction, which can increase the dust collection area and make the dust collection efficiency higher.

[0090] Working principle: Place the wooden board on the installation box 41, start the first hydraulic cylinder 42, and make a pair of clamping blocks 446 clamp the wooden board. Then start the first motor 31, so that the slide 34 drives the limiting mechanism 4 to move backward to the bottom of the cutting mechanism 5. Then start the second hydraulic cylinder 52 to drive the cutting blade 53 and the motor to move down to a suitable height. The motor starts to drive the cutting blade 53 to rotate, and the cutting blade 53 cuts the wooden board. At the same time, the second motor 73 and the negative pressure fan 62 are started, so that the dust nozzle 66 is vacuuming, and the connecting rod 78 drives the dust nozzle 66 to move forward and backward, thereby increasing the dust suction area, and the absorbed wood chips finally enter the fixed box 72.

[0091] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the embodiments of the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A size-adjustable wood board cutting device, characterized in that: include: frame; A feeding mechanism (3), the feeding mechanism (3) being arranged on the frame; A limiting mechanism (4), the limiting mechanism (4) being connected to the upper end of the feeding mechanism (3), and a pair of limiting modules (44) of the limiting mechanism (4) being capable of clamping the wooden board; a cutting mechanism (5), the cutting mechanism (5) being arranged on the frame and located above the limiting mechanism (4), the cutting mechanism (5) being used for cutting wooden boards; A dust suction mechanism (6), wherein a pair of dust suction nozzles (66) of the dust suction mechanism (6) extend to a pair of limit modules (44), and the dust suction mechanism (6) is capable of collecting wood chips generated during cutting; A pair of guide mechanisms (7), each of the pair of guide mechanisms (7) being connected to a corresponding dust suction nozzle (66), the guide mechanisms (7) being capable of driving the corresponding dust suction nozzle (66) to move forward and backward, thereby expanding the dust suction range.

2. The size-adjustable wood board cutting device according to claim 1, characterized in that: The feeding mechanism (3) comprises: a first motor (31), the first motor (31) being mounted in a mounting slot (11) of the frame; A screw rod (32), the screw rod (32) being connected to an output end of the first motor (31); A guide rod (33), wherein the guide rod (33) is arranged in the mounting groove (11); A slide seat (34), the slide seat (34) being threadedly connected to the screw rod (32), and the slide seat (34) being slidably matched with the guide rod (33).

3. The size-adjustable wood board cutting device according to claim 2, characterized in that: The limiting mechanism (4) further comprises: An installation box (41), the installation box (41) being connected to the slide seat (34); a first hydraulic cylinder (42), the first hydraulic cylinder (42) being arranged on the top of the installation box (41); A pair of rectangular blocks (43), the pair of rectangular blocks (43) are symmetrically connected to the lower end of the first hydraulic cylinder (42), and the rectangular blocks (43) are slidably matched with the corresponding limiting modules (44).

4. The size-adjustable wood board cutting device according to claim 3, characterized in that: The limiting module (44) comprises: A rotating arm (441), the rotating arm (441) being hinged in the installation box (41); A movable plate (445), the movable plate (445) being slidably disposed in the installation box (41); A mounting plate (442), wherein the mounting plate (442) is mounted on the movable plate (445), and the upper and lower ends of the rotating arm (441) are respectively slidably connected between the mounting plate (442) and the rectangular block (43); A clamping block (446), the clamping block (446) is connected to the upper end of the movable plate (445), and the clamping block (446) is used to clamp the wooden board.

5. The size-adjustable wood board cutting device according to claim 4, characterized in that: A first guide groove (431) is provided on the rectangular block (43); a first convex shaft (4411) is provided at the lower end of the rotating arm (441); the first convex shaft (4411) is slidably engaged with the first guide groove (431); a second guide groove (4412) is provided at the upper end of the rotating arm (441); a second convex shaft (4421) is provided on the mounting plate (442); the second convex shaft (4421) is slidably engaged with the second guide groove (4412).

6. The size-adjustable wood board cutting device according to claim 1, characterized in that: The cutting mechanism (5) comprises: a second hydraulic cylinder (52), the second hydraulic cylinder (52) being arranged on the frame; A connecting frame (51), the connecting frame (51) being connected to an output end of the second hydraulic cylinder (52); a cutting blade (53), the cutting blade (53) being rotatably connected to the lower end of the connecting frame (51); A pair of vertical rods (55), the pair of vertical rods (55) are symmetrically arranged on the frame, and the cutting blade (53) is slidably matched with the pair of vertical rods (55); A pair of first compression springs (56), wherein the first compression springs (56) are sleeved on corresponding vertical rods (55), and the first compression springs (56) are supported between the connecting frame (51) and the vertical rods (55).

7. The size-adjustable wood board cutting device according to claim 6, characterized in that: The dust collection mechanism (6) further comprises: A dust collection box (61), wherein the dust collection box (61) is arranged on the frame; a pair of negative pressure fans (62), the pair of negative pressure fans (62) being symmetrically connected to two sides of the dust collection box (61); A pair of dust suction pipe assemblies, wherein the dust suction pipe assemblies are connected to the corresponding negative pressure fans (62), and the dust suction nozzles (66) are connected to the lower ends of the corresponding dust suction pipe assemblies.

8. The size-adjustable wood board cutting device according to claim 7, characterized in that: The dust suction pipe assembly comprises: a first dust suction pipe (63), the first dust suction pipe (63) being connected to the corresponding negative pressure fan (62); A connecting hose (64), the connecting hose (64) being connected to the lower end of the corresponding first dust suction pipe (63); A second dust suction pipe (65), wherein the second dust suction pipe (65) is connected to the connecting hose (64) via a fixing tube (67), and the dust suction nozzle (66) is connected to the lower end of the second dust suction pipe (65).

9. The size-adjustable wood board cutting device according to claim 8, characterized in that: The guiding mechanism (7) comprises: A fixed box (72), the fixed box (72) being fixed on the frame via a support plate (71); a second motor (73), the second motor (73) being installed in the fixing box (72); A rotating rod (74), the rotating rod (74) being connected to an output end of the second motor (73); A rectangular slide rail (75), the rectangular slide rail (75) being movably connected to the rotating rod (74); A convex rod (77), the convex rod (77) being connected to the front end of the rectangular slide rail (75); A connecting rod (78), wherein the connecting rod (78) is connected between the protruding rod (77) and the corresponding fixing cylinder (67).

10. The size-adjustable wood board cutting device according to claim 9, characterized in that: Two limiting rollers (76) are spaced apart from each other on the left side of the fixed box (72), and the protruding rod (77) is supported between the two limiting rollers (76).

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