CN110774365A - Isometric cutting device for building wood processing - Google Patents

Abstract

The invention relates to an isometric cutting device for building wood processing, comprising a base, a workbench, a push plate, an isometric cutting mechanism, a turret and a conveying assembly. The telescopic cylinder drives the push plate to move, and pushes the wood to move forward. When it passes through the cutting assembly, it is cut at equal distances, and the wood is transported to the conveying assembly through the turret, and the wood is conveyed through the conveying assembly. Feeding, cutting, and rotation are performed in sequence and conveying, making wood cutting more convenient, and realizing equidistant cutting, replacing the traditional repeated cutting method, improving processing efficiency; by making the turret rotate intermittently, and rotating 90° each time, when the turret is stationary, the two cutting Work and conveying work are carried out at the same time to improve processing efficiency.

Description

Isometric cutting device for building wood processing

technical field

The invention relates to the technical field of building wood processing, in particular to an isometric cutting device for building wood processing.

Background technique

Wood is a general term for the development of plant tissue in the vascular cambium, including xylem and parenchyma rays, which is the lignified tissue formed by plants that can grow secondary, such as trees and shrubs, after the end of primary growth. , the vascular cambium in the rhizome begins to move, develops bast outwards, and develops wood inwards.

Timbers are classified according to tree species, and are generally divided into two categories: coniferous trees and broad-leaved trees; Chinese fir and various pine, spruce and fir are coniferous trees; oak, ash, camphor, sassafras and various birch, Phoebe and poplar are hardwoods.

The wood we usually refer to generally refers to the wooden materials used for industrial and civil construction. Since wood is easy to obtain and process, it has been a main building material since ancient times. It is usually divided into soft wood and hard wood. Among them, the wood used in engineering The wood is mainly taken from the trunk part of the tree.

Wood has to go through multiple processing procedures before it can be used. Among them, wood processing mainly includes cutting, grinding, drilling and coating, etc. Among them, cutting is usually to cut the wood into a certain width, length and thickness by a cutting knife. The existing cutting device is usually provided with a cutting knife, which can only cut the wood once.

The patent number is CN201710517557.6 for a wood cutting device, the specific content is that its structure includes a support frame, a workbench, a mobile device and a cutting device, and the mobile device includes an electric push rod, a guide rail seat, a connection seat and a push seat, The cutting device includes a motor, a cutting knife and an adjusting knife holder. When the wood is cut, only a single cut can be performed. When the wood needs to be cut to the same width, the wood can only be manually moved repeatedly, and the cutting and cutting can be repeated many times. Low efficiency and inconvenient to use.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the problem that when the wood needs to be cut to the same width, the wood can only be moved manually and repeatedly by arranging an equidistant cutting mechanism on the workbench. technical issues.

To achieve the above object, the present invention provides the following technical solutions:

An isometric cutting device for building wood processing, comprising a base, a workbench is fixedly connected to the left side of the top surface of the base through a first support rod, a conveying assembly is arranged on the right side of the top surface, and the workbench and the conveying assembly are arranged between the workbench and the conveying assembly. A turret is provided, a hydraulic telescopic cylinder is arranged on the left side of the top surface of the workbench, an L-shaped push plate is fixed at the output end of the hydraulic telescopic rod, and two side plates are symmetrically fixed on the left side of the top surface of the workbench , An equidistant cutting mechanism is arranged between the two side plates. The equidistant cutting mechanism includes a lifting component arranged on the side plate. The two lifting components are provided with a lifting plate, and the bottom surface of the lifting plate is provided with a cutting component. The surface is provided with adjustment components.

As a preferred option, the turret includes a rotating shaft, two ends of the rotating shaft are respectively rotatably connected to the fixed plates on both sides, and four rotating plates are uniformly fixed along the circumferential direction on the rotating shaft, and the rotating plates are evenly fixed along the width direction. A plurality of straight grooves are provided, and the straight grooves are set as open grooves, a plurality of L-shaped clamping plates are uniformly fixed along the width direction on the rotating plate, and the positions of the clamping plates and the straight grooves are staggered.

As a preference, one end of the rotating shaft is connected with a rotating motor, the rotating motor is fixedly mounted on the fixing plate, and is electrically connected with a power source and a switch.

Preferably, one end of the rotating shaft is fixed with a rotating plate, the rotating plate is provided with a rotating connection with a pawl, and the middle of the pawl is connected to the rotating plate through a spring, and a rotating plate is rotatably connected to a corresponding position on the fixed plate. Gear, the rotation center of the rotation gear coincides with the rotation shaft, and the inner ratchet wheel is coaxially fixed on the rotation gear, and the pawl is correspondingly connected with the inner ratchet wheel. The bar moves horizontally and meshes with the rotating gear.

Preferably, a chute is fixed above the base, and the moving rack is slidably connected to the chute.

Preferably, the conveying assembly includes a plurality of conveying rollers evenly arranged, second support rods are respectively fixed on the base at both ends of the conveying rollers, and the two ends of the conveying rollers are respectively rotatably connected to the top ends of the second support rods. , a plurality of the conveying rollers located at the turret are respectively located in the straight grooves on the rotating plate.

Preferably, the lifting assembly includes a screw rod rotatably connected to the inner side of the side plate, a lifting block is sleeved on the screw rod, and a lifting motor is connected to one end of the screw rod, and a guide rod is arranged parallel to one side of the screw rod, The guide rod is fixedly connected with the side plate, and the lifting block is sleeved on the guide rod and slides along the guide rod. A connecting plate is fixed on the inner side of the lifting block, and both ends of the lifting plate are fixedly connected with the connecting plates on both sides respectively. .

As a preference, the cutting assembly includes a first cutting shaft, a second cutting shaft and a third cutting shaft that are evenly arranged and rotatably connected along the front and rear directions of the lifting plate, and the first cutting shaft, the second cutting shaft and the third cutting shaft are The shafts are connected in turn by a pulley and a transmission belt, the first cutting shaft is fixed with a first cutting knife, and one end is connected with a cutting motor, and the first cutting knife is located in the middle of the lifting plate, and the lifting plate corresponds to the first cutting blade. The positions of the two cutting shafts are symmetrical and are slidably connected with two second knife bases. The bottom ends of the second knife bases are rotatably connected with second cutting knives. The third cutting shafts are symmetrically arranged with third cutting knives and are correspondingly arranged There is a third knife seat slidably connected with the lifting plate, and the vertical distance between the third cutting knife and the second cutting knife is equal to the vertical distance between the second cutting knife and the first cutting knife.

As a preference, a limit block is fixed in the center hole of the second cutting knife, the second cutting shaft is sleeved in the center hole of the second cutting knife, and a limit groove is fixed on the shaft along the length direction, and the limit block The third cutting shaft is slidably connected to the limiting groove, the third cutting shaft is provided with a limiting groove, and the third cutting blade is correspondingly provided with a limiting block.

Preferably, the adjustment assembly includes a fixed shaft fixed on the top surface of the lifting plate, and the fixed shaft is located directly above the first cutting knife, two rotating rods are rotatably connected to the fixed shaft, and the upper length of the rotating rod is An adjustment slot is arranged in the direction, and an arc-shaped adjustment rack is fixed on one side. The arc-shaped adjustment rack and the center of the circle are coincident with the fixed shaft, and an adjustment gear is engaged on one side, and the adjustment gear is connected with an adjustment motor. Corresponding positions on the lifting plate are respectively provided with a first moving groove and a second moving groove, the top ends of the second knife seat and the third knife seat are respectively slidably connected in the first moving groove and the second moving groove, and the first knife seat and the A second moving wheel and a third moving wheel are rotatably connected to the top of the second tool holder, and the first moving wheel and the second moving wheel are located in the adjustment grooves on the left rotating rod, and the second moving wheel is located on the right side. The moving wheel and the second moving wheel are located in the adjustment grooves on the right turning lever.

Beneficial effects of the present invention:

(1) The present invention places the wood to be cut on the workbench, drives the push plate to move through the hydraulic telescopic cylinder, and pushes the wood to move forward, performs equidistant cutting when passing through the cutting assembly, and transfers the wood to the At the conveying assembly, the wood is conveyed through the conveying assembly, and the material is fed, cut, rotated and conveyed in sequence, which makes the wood cutting more convenient, and realizes equidistant cutting, instead of the traditional repeated cutting method, and improves the processing efficiency;

(2) In the present invention, by making the turret rotate intermittently, and rotating 90° each time, when the turret is stationary, the cutting work and the conveying work of the two are carried out at the same time, so as to improve the processing efficiency;

(3) The present invention makes the two rotating rods rotate the same angle by adjusting the motor, adjusting gear and adjusting rack, and drives the second tool seat and the third tool seat along the corresponding first moving wheel and the second moving wheel through the first moving wheel and the second moving wheel. The moving groove and the second moving groove move, and the distance of the third knife seat is always twice that of the second knife seat, so that the vertical distances between the first cutting knife, the second cutting knife and the third cutting knife are moderate and equal, In order to achieve equidistant cutting;

(4) The present invention links the turret and the push plate by moving the rack, rotating gear, inner ratchet, pawl and other structures, reduces the number of driving parts, saves electric energy, and makes the operation of the device more simple and convenient.

To sum up, the equipment has the advantages of simple structure and can be cut at equal distances, and is especially suitable for the technical field of construction wood processing.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a schematic structural diagram of an isometric cutting device.

Figure 2 is a schematic structural diagram of an isometric cutting mechanism;

FIG. 3 is a schematic diagram of the structure of the adjustment assembly.

FIG. 4 is a schematic diagram of the structure of the cutting assembly.

Figure 5 is a schematic diagram of the connection between the turret and the worktable.

Fig. 6 is a schematic diagram of the position of the rotating plate and the conveying roller.

FIG. 7 is a schematic structural diagram of the third embodiment.

Figure 8 is a schematic diagram of the connection between the pawl and the inner ratchet.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

Example 1

As shown in FIGS. 1 to 8 , the present invention provides an isometric cutting device for building wood processing, including a base 1, and a workbench 2 is fixedly connected to the left side of the top surface of the base 1 through a first support rod 101. A conveying assembly is arranged on the right side of the surface, and a turret 4 is arranged between the worktable 2 and the conveying assembly. A hydraulic telescopic cylinder 203 is disposed on the left side of the top surface of the worktable 2, and the output end of the hydraulic telescopic rod is fixed with an L-shaped Two side plates 204 are symmetrically fixed on the left side of the top surface of the worktable 2, and an equidistant cutting mechanism 3 is arranged between the two side plates 204. The equidistant cutting mechanism 3 includes a The lifting components on the side plate 204, two lifting components are provided with lifting plates 7, the bottom surface of the lifting plates 7 is provided with a cutting component, and the top surface is provided with an adjusting component.

The rotating frame 4 includes a rotating shaft 401, two ends of the rotating shaft 401 are respectively rotatably connected with the fixed plates 201 on both sides, and four rotating plates 402 are uniformly fixed on the rotating shaft 401 along the circumferential direction, and the rotating plates 402 are arranged along the width. A plurality of straight grooves are uniformly arranged in the direction, and the straight grooves are set as open grooves. A plurality of L-shaped clamping plates 403 are uniformly fixed on the rotating plate 402 along the width direction, and the positions of the clamping plates 403 and the straight grooves are staggered.

One end of the rotating shaft 401 is connected with a rotating motor, which is fixedly mounted on the fixing plate 201 and is electrically connected with a power source and a switch.

The conveying assembly includes a plurality of conveying rollers 5 that are evenly arranged. Second support rods 501 are respectively fixed on the base 1 at both ends of the conveying rollers 5. The two ends of the conveying rollers 5 rotate with the top of the second support rods 501 respectively. In connection, a plurality of the conveying rollers 5 located at the turret 4 are respectively located in the straight grooves on the rotating plate 402 .

The working principle of this embodiment is as follows: the wood to be cut is placed on the worktable 2, the cutting distance is adjusted by the adjusting assembly, the cutting assembly is moved down by the lifting assembly, and then the push plate 202 is driven to move by the hydraulic telescopic cylinder 203, The push plate 202 pushes the wood to move forward, and when it passes through the cutting assembly, equidistant cutting is performed. After the cutting is completed, the wood moves to one of the rotating plates 402 on the turret 4, and the hydraulic telescopic cylinder 203 drives the push plate 202 to return. , at the same time, drive the turret 4 and the wood to turn 90° by rotating the motor, continue the above process, and cut the next wood, when the wood on the rotating plate 402 is rotated to the conveying assembly, the wood is just in contact with the conveying roller 5, The conveying roller 5 is rotated by the driving device, thereby driving the cut wood to move and convey, and the conveying process and the cutting process are carried out at the same time, so as to improve the processing efficiency.

Embodiment 2

As shown in FIG. 1 to FIG. 8 , the same or corresponding components as in the first embodiment are marked with the corresponding reference numerals. For simplicity, only the differences from the first embodiment are described below. The difference between the second embodiment and the first embodiment is that, as shown in FIGS. 2 to 4 , the lifting assembly includes a screw rod 6 rotatably connected to the inner side of the side plate 204 , and a lifting block 602 is sleeved on the screw rod 6 . And one end is connected with a lifting motor 603, one side of the screw rod 6 is also provided with a guide rod 601 in parallel, the guide rod 601 is fixedly connected with the side plate 204, and the lifting block 602 is sleeved on the guide rod 601, and along the guide rod 601 slides, a connecting plate 701 is fixed on the inner side of the lifting block 602, and both ends of the lifting plate 7 are fixedly connected to the connecting plates 701 on both sides respectively.

The cutting assembly includes a first cutting shaft, a second cutting shaft and a third cutting shaft which are evenly arranged and rotatably connected along the front and rear directions of the lifting plate 7, and the first cutting shaft, the second cutting shaft and the third cutting shaft are in sequence. Connected by a pulley and a transmission belt, a first cutting blade 8 is fixed on the first cutting shaft, and a cutting motor 801 is connected to one end. The position of the second cutting shaft is symmetrical and two second knife seats 901 are slidably connected. The bottom end of the second knife seat 901 is rotatably connected with a cutting knife. The third cutting shaft is symmetrically arranged with a third cutting knife 10, and Correspondingly, there is a third knife seat 1001 slidably connected to the lifting plate 7 , the vertical distance between the third cutting knife 10 and the second cutting knife 9 and the vertical distance between the second cutting knife 9 and the first cutting knife 8 equal distances.

A limit block is fixed in the center hole of the second cutting knife 9, the second cutting shaft is sleeved in the center hole of the second cutting knife 9, and a limit groove is fixed on the shaft along the length direction, and the limit block slides The third cutting shaft is also provided with a limiting groove, and the third cutting blade is correspondingly provided with a limiting block.

The adjustment assembly includes a fixed shaft 704 fixed on the top surface of the lifting plate 7, and the fixed shaft 704 is located directly above the first cutting knife 8. Two rotating rods 11 are rotatably connected to the fixed shaft 704. An adjustment slot is provided along the length direction, and an arc-shaped adjustment rack 1102 is fixed on one side. The arc-shaped adjustment rack 1102 coincides with the center of the circle and the fixed shaft 704, and one side is meshed with an adjustment gear 1101. The adjustment gear 1101 A regulating motor is connected, a first moving slot 702 and a second moving slot 703 are respectively set at corresponding positions on the lifting plate 7 , and the top ends of the second knife seat 901 and the third knife seat 1001 are respectively slidably connected to the first moving groove 702 and the second moving groove 703, and the top ends of the first tool seat and the second tool seat 901 are rotatably connected with the second moving wheel 902 and the third moving wheel 1002, and the first moving wheel and the second moving wheel are located on the left side. The second moving wheel 902 and the second moving wheel 902 on the right are located in the adjusting groove on the right rotating rod 11 .

When the distance between the first cutting blade 8, the second cutting blade and the third cutting blade 10 needs to be adjusted, the adjustment gear 1101 is driven to rotate by the adjustment motor, and the two rotating rods 11 are rotated by the same angle through the adjustment rack 1102, And through the first moving wheel and the second moving wheel 902, the second tool seat 901 and the third tool seat 1001 are driven to move along the corresponding first moving groove 702 and the second moving groove 703, wherein the distance that the third tool seat 1001 moves It is always twice as long as the second knife seat 901. Therefore, the vertical distances between the first cutting knife 8, the second cutting knife 8 and the third cutting knife 10 are moderately equal, so as to achieve equidistant cutting; The lifting motor 603 drives the screw 6 to rotate, so that the lifting block 602 drives the lifting plate 7 and the cutting assembly to move down, and then starts the cutting motor 801 to rotate the first cutting shaft, and make the second cutting shaft and the second cutting shaft through the pulley and transmission belt. The third cutting shaft rotates synchronously, so that the first cutting blade 8, the second cutting blade 9 and the third cutting blade 10 are rotated simultaneously, and the moving wood is cut.

Embodiment 3

As shown in Fig. 1 to Fig. 8, the same or corresponding parts as in the first embodiment are marked with the corresponding reference numerals. For simplicity, only the differences from the first embodiment are described below. The difference between the second embodiment and the first embodiment is that, as shown in Figures 7 and 8, a rotating disk 406 is fixed at one end of the rotating shaft 401, and the rotating disk 406 is provided with a pawl 407 rotatably connected with the ratchet. The middle part of the claw 407 is connected with the rotating plate 406 through a spring, a rotating gear 404 is rotatably connected to the corresponding position on the fixed plate 201, the rotation center of the rotating gear 404 coincides with the rotating shaft 401, and an inner ratchet is coaxially fixed on the rotating gear 404 405 , the pawl 407 is correspondingly connected with the inner ratchet 405 , the output end of the hydraulic telescopic cylinder 203 is also fixed with a moving rack 205 , and the moving rack 205 moves in the horizontal direction and meshes with the rotating gear 404 .

A chute 102 is fixed above the base 1 , and the moving rack 205 is slidably connected to the chute 102 .

When the hydraulic telescopic cylinder 203 drives the push plate 202 to move, the moving rack 205 moves synchronously, and drives the rotating gear 404 and the inner ratchet 405 to rotate, and the pawl 407 slides along the tooth back of the inner ratchet 405. Therefore, the rotating shaft 401 and the inner ratchet 405 rotate. The turret 4 is stationary, when the wood is pushed onto the rotating plate 401, the hydraulic telescopic rod drives the pushing plate 202 and the moving rack 205 to return, the rotating gear 404 and the inner ratchet 405 rotate accordingly, and the pawl 407 is under the action of the spring Insert it into the tooth slot of the inner ratchet 405, so that the rotating shaft 401 and the turret 4 are moved along with the inner ratchet 405 and the pawl 407. When the push plate 202 returns to its original position, the turret 4 turns exactly 90° , by moving the rack 205, the rotating gear 404, the inner ratchet 405 and the pawl 407, the turret 4 and the push plate 202 are linked together, reducing the number of driving parts, saving electric energy, and making the operation of the device more simple and convenient.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "front and rear", "left and right", etc. are based on the orientation or positional relationship 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 component referred to must have a particular orientation, be constructed and operate in a particular orientation, it should not be construed as a limitation of the invention.

Of course, in this technical solution, those skilled in the art should understand that the term "a" should be understood as "at least one" or "one or more", that is, in an embodiment, the number of an element may be one , and in other embodiments, the number of the elements may be multiple, and the term "one" should not be construed as a limitation on the number.

The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this, any changes or replacements that can be easily thought of by those skilled in the art under the technical prompts of the present invention, All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

1. The utility model provides a building equidistance cutting device for wood working which characterized in that: including base (1), the top surface left side of base (1) is through first bracing piece (101) fixedly connected with workstation (2), and the top surface right side is provided with conveyor components, and is provided with rotating turret (4) between workstation (2) and the conveyor components, the top surface left side of workstation (2) is provided with hydraulic telescoping cylinder (203), and hydraulic telescoping rod's output end is fixed with catch plate (202) of L shape, the top surface left side symmetry of workstation (2) is fixed with two curb plates (204), is provided with equidistance cutting mechanism (3) between two curb plates (204), equidistance cutting mechanism (3) are including setting up the lifting unit on curb plate (204), and two lifting unit are provided with lifter plate (7), and the bottom surface of lifter plate (7) is provided with cutting assembly, and the top surface is provided with adjusting part.

2. The equidistant cutting device for building wood processing according to claim 1, wherein the rotating frame (4) comprises a rotating shaft (401), two ends of the rotating shaft (401) are rotatably connected with the fixing plates (201) at two sides respectively, four rotating plates (402) are uniformly fixed on the rotating shaft (401) along the circumferential direction, a plurality of straight grooves are uniformly arranged on the rotating plates (402) along the width direction, the straight grooves are open grooves, a plurality of L-shaped clamping plates (403) are uniformly fixed on the rotating plates (402) along the width direction, and the positions of the clamping plates (403) are staggered with the straight grooves.

3. The equidistant cutting device for building woodworking of claim 2, wherein: one end of the rotating shaft (401) is connected with a rotating motor which is fixedly arranged on the fixing plate (201) and electrically connected with a power supply and a switch.

4. The equidistant cutting device for building woodworking of claim 2, wherein: one end of the rotating shaft (401) is fixed with a rotating disc (406), the rotating disc (406) is provided with a rotating connecting pawl (407), the middle of the pawl (407) is connected with the rotating disc (406) through a spring, the corresponding position on the fixing plate (201) is rotatably connected with a rotating gear (404), the rotating center of the rotating gear (404) is overlapped with the rotating shaft (401), an inner ratchet wheel (405) is coaxially fixed on the rotating gear (404), the pawl (407) is correspondingly connected with the inner ratchet wheel (405), the output end of the hydraulic telescopic cylinder (203) is further fixed with a moving rack (205), and the moving rack (205) moves along the horizontal direction and is meshed with the rotating gear (404).

5. The equidistant cutting device for building woodworking of claim 4, wherein: a sliding groove (102) is fixed above the base (1), and the movable rack (205) is connected in the sliding groove (102) in a sliding manner.

6. The equidistant cutting device for building woodworking of claim 2, wherein: conveying assembly is including a plurality of conveying rollers (5) of even setting, and the both ends position that corresponds conveying roller (5) on base (1) is fixed with second bracing piece (501) respectively, and the both ends of conveying roller (5) rotate with the top of second bracing piece (501) respectively and are connected, are located a plurality of rotating turret (4) department conveying roller (5) are located the straight flute on rotor plate (402) respectively.

7. The equidistant cutting device for building woodworking of claim 1, wherein: lifting unit has cup jointed lifter (602) including rotating lead screw (6) of connecting in curb plate (204) inboard on lead screw (6), and one end is connected with elevator motor (603), one side of lead screw (6) still parallel arrangement has guide bar (601), guide bar (601) and curb plate (204) fixed connection, and lifter (602) cup joint on guide bar (601) to slide along guide bar (601), the medial surface of lifter (602) is fixed with connecting plate (701), the both ends of lifter plate (7) respectively with connecting plate (701) fixed connection of both sides.

8. The equidistant cutting device for building woodworking of claim 7, wherein: the cutting assembly comprises a first cutting shaft, a second cutting shaft and a third cutting shaft which are uniformly arranged in the front-back direction of a lifting plate (7) and are rotatably connected, the first cutting shaft, the second cutting shaft and the third cutting shaft are sequentially connected through a belt pulley and a transmission belt, a first cutting knife (8) is fixed on the first cutting shaft, one end of the first cutting shaft is connected with a cutting motor (801), the first cutting knife (8) is located at the middle position of the lifting plate (7), the lifting plate (7) is symmetrical in position corresponding to the second cutting shaft and is slidably connected with two second knife seats (901), the bottom end of each second knife seat (901) is rotatably connected with a second cutting knife (9), a third cutting knife (10) is symmetrically arranged on the third cutting shaft and is correspondingly provided with a third knife seat (1001) slidably connected with the lifting plate (7), and the vertical distance between the third cutting knife (10) and the second cutting knife (9) and the first cutting knife (8) The vertical distances between them are equal.

9. The equidistant cutting device for building woodworking of claim 8, wherein: a limiting block is fixed in a center hole of the second cutting knife (9), the second cutting knife is sleeved in the center hole of the second cutting knife (9), a limiting groove is fixed on the shaft along the length direction, the limiting block is connected in the limiting groove in a sliding mode, a limiting groove is arranged on the third cutting knife in a shaft, and a limiting block is correspondingly arranged on the third cutting knife (10).

10. The equidistant cutting device for building woodworking of claim 8, wherein: the adjusting assembly comprises a fixed shaft (704) fixed on the top surface of the lifting plate (7), the fixed shaft (704) is positioned right above the first cutting knife (8), the fixed shaft (704) is connected with two rotating rods (11) in a rotating manner, adjusting grooves are formed in the rotating rods (11) along the length direction, an arc-shaped adjusting rack (1102) is fixed on one side of each rotating rod, the circle centers of the arc-shaped adjusting rack (1102) and the fixed shaft (704) are overlapped, an adjusting gear (1101) is meshed on one side of each rotating rod, the adjusting gear (1101) is connected with an adjusting motor, a first moving groove (702) and a second moving groove (703) are respectively arranged on the lifting plate (7) in corresponding positions, the top ends of a second knife seat (901) and a third knife seat (1001) are respectively connected in the first moving groove (702) and the second moving groove (703) in a sliding manner, and the top ends of the first knife seat (901) and the second knife seat (901) are respectively connected with a second moving wheel, and the first moving wheel and the second moving wheel (902) positioned on the left side are positioned in the adjusting groove on the left rotating rod (11), and the second moving wheel (902) positioned on the right side are positioned in the adjusting groove on the right rotating rod (11).

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