Square timber fixed-length cutting device
Automatic fixed-length cutting of square timber is achieved through motor-driven fixed-length cutting and clamping components, solving the problem of low efficiency in existing technologies and ensuring the flatness and stability of the cut surface.
Patent Information
- Application Number
- CN202422728977.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-09
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-11-09
AI Technical Summary
Existing timber cutting equipment relies on manual length setting, which is inefficient and lacks an effective fixing structure, resulting in uneven cut surfaces.
The system employs a fixed-length cutting assembly and a clamping assembly. Automatic fixed-length cutting is achieved by driving a threaded rod and a cutting device via a motor, while the clamping assembly ensures the stability of the square timber and prevents it from tilting.
It improves the efficiency of fixed-length timber cutting, ensures a flat cut surface, and reduces the uncertainty of manual operation and the tilting of the cut surface.
Smart Images
Figure CN223604565U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to square timber cutting technology field especially, relate to a square timber fixed length cutting equipment. BACKGROUND
[0002] Square timber is a kind of commonly used building material, mostly for right-angle sawing and the width-thickness ratio less than 3, the section is rectangular (including square) sawn timber, with good durability and stability, suitable for various climate and environmental conditions, can be used to build house, make furniture etc.. Square timber can be cut, polished and lacquered according to needs, so that it has better use performance and decorative effect.
[0003] But in the prior art, square timber cutting equipment is mostly marked length by artificial marking line to square timber when using, artificial has many uncertain factors, and artificial length needs to consume a lot of time, indirectly leads to the decline of square timber cutting efficiency;And, the existing square timber cutting equipment lacks fixing structure when moving square timber, leading to the inclination of square timber when moving, leading to the unevenness of cutting surface.
[0004] Therefore, a square timber fixed length cutting equipment is proposed to solve the above problems. UTILITY MODEL CONTENTS
[0005] The utility model aims at solving the problems in the prior art.
[0006] In order to achieve the above object, the utility model adopts the following technical scheme: a square timber fixed length cutting equipment, comprising: a workbench, the bottom surface of the workbench is fixedly installed with a plurality of supporting legs, one side surface of the workbench is fixedly provided with a control terminal, the top surface of the workbench is movably placed with a plurality of square timber bodies, the top surface of the workbench is provided with a fixed length cutting assembly, one side surface of the fixed length cutting assembly is provided with a clamping assembly, both ends of the top surface of the workbench are fixedly installed with vertical plates, a first threaded rod is connected between the two vertical plates through a bearing, one side surface of one of the vertical plates is fixedly installed with a first motor, the output end of the first motor movably penetrates one of the vertical plates and is fixedly connected with one end of the first threaded rod, a long rod is fixedly installed between the two vertical plates, the surface of the first threaded rod is screw-connected with a movable block, the movable block is sleeved on the surface of the long rod at one end, one side surface of the movable block is fixedly installed with a cutting device, the top surface of the workbench is provided with a cutting through slot, and the lower end of the cutting knife of the cutting device is located in the cutting through slot.
[0007] As a preferred implementation, the fixed-length cutting assembly comprises two T-shaped grooves, which are arranged at one end of the top surface of the workbench, and a U-shaped baffle is slidably arranged in the two T-shaped grooves, one side surface of the U-shaped baffle is fixedly provided with a supporting plate, a fastening bolt is threadedly connected to the top surface of the supporting plate, a limiting plate is connected to the bottom end surface of the fastening bolt through a bearing, and a plurality of anti-skid strips are fixedly arranged on the bottom surface of the limiting plate.
[0008] As a preferred implementation, the other side surface of the U-shaped baffle is fixedly provided with an L-shaped finger plate, the other side surface of the workbench is fixedly provided with a scale, and the side surface of the scale is attached to the side surface of the L-shaped finger plate, and the zero scale line of the scale is arranged on the same horizontal line as the cutting knife of the cutting device.
[0009] As a preferred implementation, the other end of the workbench is perimetrically provided with a movable U-shaped plate, one side surface of the U-shaped plate is fixedly provided with a push plate, the push plate is arranged on the upper side of the workbench, one end surface of each of the plurality of square wood bodies is attached to one side surface of the push plate, two extension plates are fixedly arranged on the bottom surface of the workbench, a second threaded rod is connected between the two extension plates through a bearing, the bottom side of the U-shaped plate is threadedly connected to the surface of the second threaded rod, one side surface of one of the extension plates is fixedly provided with a second motor, and the output end of the second motor is movably penetrated through the one extension plate and fixedly connected to one end of the second threaded rod.
[0010] As a preferred implementation, the center of the top surface of the workbench is fixedly provided with a U-shaped plate, vertical grooves are arranged on the two side surfaces of the U-shaped plate, a gas cylinder is fixedly arranged on the top surface of the U-shaped plate, the output end of the gas cylinder is movably penetrated through the top surface of the U-shaped plate, and a fixed plate is connected to the output end of the gas cylinder through a bearing.
[0011] As a preferred implementation, the clamping assembly comprises two horizontal plates, which are symmetrically fixedly arranged on one side surface of the U-shaped plate, the two horizontal plates are arranged on the upper side of the top surface of the workbench, a horizontal rod is fixedly arranged between the two horizontal plates, two L-shaped clamping plates are movably attached to the surface of the horizontal rod, a horizontal groove is arranged on one side surface of the U-shaped plate, and the two side surfaces of the two L-shaped clamping plates are movably attached to the inner wall surfaces of the upper and lower ends of the horizontal groove.
[0012] As a preferred implementation, one end surface of the two L-shaped clamping plates is hinged with a hinge plate, a connecting block is hinged between the two hinge plates, the other side surface of the L-shaped plate is fixedly installed with an electric telescopic rod, and the output end of the electric telescopic rod is fixedly connected with one side surface of the connecting block.
[0013] Compared with the prior art, the utility model has the advantages and positive effects that:
[0014] 1、the utility model discloses, when needing fixed length cut off square wood, first remove the U -shaped baffle, make the U -shaped baffle in the inside movement of two T -shaped groove, U -shaped baffle moves and drives L -shaped fingerboard to move, when L -shaped fingerboard points in the position of the surface of the scale and the length that square wood body needs to cut off is same, when this can twist fastening screw thread, and fastening bolt rotates and drives the movement of the limiting plate, when the limiting plate is closely attached the top surface of the workbench, can the one end of multiple square wood body is attached push -plate and is placed on the top surface of the workbench, then through the control terminal operation second motor, and second motor operation drives the rotation of second screw rod, because the back -shaped plate is attached the surface of the movable sleeve of workbench, and second screw rod rotates and drives the movement of back -shaped plate, and back -shaped plate moves and drives the movement of push -plate, and push -plate moves and drives the movement of multiple square wood body, when the other end of multiple square wood body is attached baffle, when this stops running second motor and runs air cylinder, and air cylinder operation drives the downward movement of fixed plate in the inside of two vertical grooves, when fixed plate can firmly clamping and fixing multiple square wood with the top surface of the workbench, when this can run cutting equipment and first motor through the control terminal, and first motor operation drives the rotation of first screw rod, and first screw rod rotates and drives the movement of movable block on the surface of long rod, and movable block moves and drives the movement of cutting equipment, and cutting equipment runs and carries out the cutting treatment of multiple square wood body, and this repeated operation can continuously carry out fixed length cutting treatment to multiple square wood body, and through the cooperation of the above -mentioned structure, U -shaped baffle and scale can adjust the length of square wood body cutting, push -plate can push multiple square wood body and cut off simultaneously, and fixed plate can ensure the stability of square wood body cutting, avoid needing artificial line for square wood body cutting and fixed length, and the device can continuously carry out fixed length cutting treatment to square wood body only once, greatly improve the efficiency of square wood fixed length cutting.
[0015] 2. In this utility model, when it is necessary to ensure the stable movement of multiple square timber bodies, one end of each square timber body is first attached to the push plate and placed on the top surface of the workbench. Then, the electric telescopic rod is operated by the control terminal. The operation of the electric telescopic rod drives the connecting block to move. The movement of the connecting block drives the two hinge plates to move. The movement of the two hinge plates drives the two L-shaped clamping plates to move in opposite directions on the surface of the crossbar. When the two L-shaped clamping plates can firmly clamp and fix the multiple square timber bodies, the multiple square timber bodies can then be cut by the fixed-length cutting component. Through the cooperation of the above structure, the two L-shaped clamping plates can horizontally clamp and fix the multiple square timber bodies, ensuring the stability of the multiple square timber bodies when moving and avoiding the multiple square timbers from being cut at an angle, resulting in the tilting of the cut surface. Attached Figure Description
[0016] Figure 1 A three-dimensional structural diagram of a square timber fixed-length cutting device provided for this utility model;
[0017] Figure 2 A schematic diagram of the left side of a square timber length-cutting device provided by this utility model;
[0018] Figure 3 A bottom view of the structure of a square timber fixed-length cutting device provided by this utility model;
[0019] Figure 4 A schematic diagram of the structure of the profile plate of a square timber fixed-length cutting device provided by this utility model;
[0020] Figure 5 This utility model provides a fixed-length cutting device for square timber. Figure 4 A schematic diagram of the structure viewed from below;
[0021] Figure 6 This utility model provides a fixed-length cutting device for square timber. Figure 4 A schematic diagram of the right-side view structure;
[0022] Figure 7 This utility model provides a fixed-length cutting device for square timber. Figure 2 A schematic diagram of the structure of A in the middle.
[0023] Legend:
[0024] 1, workbench; 2, support leg; 3, control terminal; 4, vertical plate; 401, first threaded rod; 402, first motor; 403, long rod; 404, movable block; 5, cutting device; 6, cutting slot; 7, square wood body; 8, fixed-length cutting assembly; 801, T-shaped groove; 802, U-shaped baffle; 803, support plate; 804, fastening bolt; 805, limiting plate; 806, L-shaped finger plate; 807, scale; 808, back-shaped plate; 809, push plate; 810, extension plate; 811, second threaded rod; 812, second motor; 813, U-shaped plate; 814, vertical slot; 815, air cylinder; 816, fixed plate; 9, clamping assembly; 901, horizontal plate; 902, horizontal rod; 903, L-shaped clamping plate; 904, horizontal slot; 905, hinged plate; 906, connecting block; 907, electric telescopic rod. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0026] Please refer to Figures 1-7 The utility model provides a kind of technical solutions: a square wood fixed-length cutting device, including: workbench 1, the bottom surface of workbench 1 is fixedly installed with multiple support legs 2, the side surface of workbench 1 is fixedly provided with control terminal 3, the top surface of workbench 1 is movably placed with multiple square wood bodies 7, the top surface of workbench 1 is equipped with fixed-length cutting assembly 8, the side surface of fixed-length cutting assembly 8 is equipped with clamping assembly 9, the top surface of workbench 1 is fixedly installed with vertical plate 4 at both ends, first threaded rod 401 is connected between two vertical plates 4 by bearing, the side surface of one of vertical plate 4 is fixedly installed with first motor 402, the output end of first motor 402 movably penetrates one of vertical plate 4 and is fixedly connected with the end of first threaded rod 401, long rod 403 is fixedly installed between two vertical plates 4, the surface of first threaded rod 401 is threadedly connected with movable block 404, movable block 404 is movably sleeved on the surface of long rod 403 at one end, the side surface of movable block 404 is fixedly installed with cutting device 5, cutting slot 6 is formed in the top surface of workbench 1, and the part of cutting knife lower end of cutting device 5 is located in the inside of cutting slot 6.
[0027] Specifically, the device is connected with an external power supply device to provide power, and the control terminal 3 controls the first motor 402, the second motor 812, the cutting device 5, the air cylinder 815 and the electric telescopic rod 907, the first motor 402 and the second motor 812 are reversible motors; the movable block 404 moves with the help of the first threaded rod 401 and the long rod 403; the cutting device 5 is a prior art, which can drive the built-in cutting disc to rotate and cut after being started, thereby cutting the square wood body 7, and the specific structure is not described here.
[0028] In one embodiment, the fixed-length cutting assembly 8 comprises two T-shaped grooves 801, which are arranged at one end of the top surface of the workbench 1, and the inside of the two T-shaped grooves 801 is slidably attached with a U-shaped baffle 802, one side surface of the U-shaped baffle 802 is fixedly installed with a supporting plate 803, the top surface of the supporting plate 803 is threadedly connected with a fastening bolt 804, the bottom end surface of the fastening bolt 804 is connected with a limiting plate 805 through a bearing, the bottom surface of the limiting plate 805 is fixedly installed with a plurality of anti-skid strips (not shown in the figure), and the limiting plate 805 is located between the workbench 1 and the supporting plate 803.
[0029] Specifically, the two ends of the U-shaped baffle 802 are fixedly installed with protrusions matched with the T-shaped grooves 801, so as to ensure stable sliding of the U-shaped baffle 802; the fastening bolt 804 and the limiting plate 805 limit the movement of the U-shaped baffle 802; the bottom surface of the limiting plate 805 is fixedly installed with a plurality of anti-skid strips, which prevents the limiting plate 805 from sliding.
[0030] In one embodiment, the other side surface of the U-shaped baffle 802 is fixedly installed with an L-shaped finger plate 806, the other side surface of the workbench 1 is fixedly installed with a scale 807, one side inner wall surface of the L-shaped finger plate 806 abuts one side surface of the scale 807, and the zero scale line position of the scale 807 is kept in the same horizontal line as the cutting knife of the cutting device 5.
[0031] Specifically, the one side surface of the L-shaped finger plate 806 is flush with the one side surface of the U-shaped baffle 802, and cooperates with the scale 807 to determine the cutting length of the square wood body 7.
[0032] In an embodiment, the other end of the workbench 1 is provided with a movable sleeve of a surface around the back plate 808, one side surface of the back plate 808 is fixedly provided with a push plate 809, the push plate 809 is located on the upper side of the workbench 1, one end surface of the plurality of square wood bodies 7 is attached to one side surface of the push plate 809, the bottom surface of the workbench 1 is fixedly provided with two extension plates 810, the second threaded rod 811 is connected between the two extension plates 810 through the bearing, the bottom side of the back plate 808 is threadedly connected to the surface of the second threaded rod 811, one side surface of one of the extension plates 810 is fixedly provided with a second motor 812, the output end of the second motor 812 movably penetrates one of the extension plates 810 and is fixedly connected to one end of the second threaded rod 811.
[0033] Specifically: the second threaded rod 811 drives the back plate 808 to move; the push plate 809 pushes the plurality of square wood bodies.
[0034] In an embodiment, the center of the top surface of the workbench 1 is fixedly provided with a U-shaped plate 813, the two side surfaces of the U-shaped plate 813 are provided with vertical through grooves 814, the top surface of the U-shaped plate 813 is fixedly provided with a gas cylinder 815, the output end of the gas cylinder 815 movably penetrates the top surface of the U-shaped plate 813, the output end of the gas cylinder 815 is connected with a fixed plate 816 through the bearing, and the two ends of the fixed plate 816 movably attach to the inside of the two vertical through grooves 814.
[0035] Specifically: the gas cylinder 815 drives the fixed plate 816 to move; the fixed plate 816 cooperates with the workbench 1 to firmly clamp and limit the plurality of square wood bodies 7, so as to avoid displacement during cutting.
[0036] In an embodiment, the clamping assembly 9 comprises two horizontal plates 901, the two horizontal plates 901 are fixedly provided on one side surface of the back plate 808, the two horizontal plates 901 are located on the upper side of the top surface of the workbench 1, a horizontal rod 902 is fixedly provided between the two horizontal plates 901, the horizontal rod 902 is movably provided with two L-shaped clamping plates 903, the one side surface of the back plate 808 is provided with a horizontal through groove 904, and the two side surfaces of the two L-shaped clamping plates 903 movably attach to the inner wall surfaces of the upper and lower ends of the horizontal through groove 904.
[0037] Specifically: the two L-shaped clamping plates 903 horizontally clamp and fix the plurality of square wood bodies 7.
[0038] In an embodiment, one end surface of the two L-shaped clamping plates 903 is hingedly provided with a hinge plate 905, a connecting block 906 is hingedly provided between the two hinge plates 905, a motor telescopic rod 907 is fixedly provided on the other side surface of the back plate 808, and the output end of the motor telescopic rod 907 is fixedly connected with one side surface of the connecting block 906.
[0039] Specifically, the electric telescopic rod 907 drives the two hinged plates 905 to move; the two hinged plates 905 drive the two L-shaped clamping plates 903 to slide on the surface of the horizontal rod 902 towards opposite directions.
[0040] Working principle: when the fixed length cutting square wood is needed, first move the U-shaped baffle 802, make the U-shaped baffle 802 move inside the two T-shaped grooves 801, the U-shaped baffle 802 moves and drives the L-shaped finger plate 806 to move, when the L-shaped finger plate 806 points to the position of the scale 807 surface and the length of the square wood body 7 needs to be cut off, at this time, the fastening screw can be twisted, the fastening bolt 804 rotates and drives the limiting plate 805 to move, when the limiting plate 805 tightly adheres to the top surface of the workbench 1, the one end of the plurality of square wood bodies 7 can be adhered to the push plate 809 and placed on the top surface of the workbench 1, then the second motor 812 is operated through the control terminal 3, the second motor 812 operates and drives the second threaded rod 811 to rotate, because the back plate 808 is tightly adhered to the movable sleeve set on the surface of the workbench 1, the second threaded rod 811 rotates and drives the back plate 808 to move, the back plate 808 moves and drives the push plate 809 to move, the push plate 809 moves and drives the plurality of square wood bodies 7 to move, when the other end of the plurality of square wood bodies 7 adheres to the baffle, at this time, the second motor 812 is stopped and the air cylinder 815 is operated, the air cylinder 815 operates and drives the fixed plate 816 to move downward inside the two vertical grooves 814, when the fixed plate 816 cooperates with the top surface of the workbench 1 and can firmly clamp and fix the plurality of square woods, at this time, the cutting equipment 5 and the first motor 402 can be operated through the control terminal 3, the first motor 402 operates and drives the first threaded rod 401 to rotate, the first threaded rod 401 rotates and drives the movable block 404 to move on the surface of the long rod 403, the movable block 404 moves and drives the cutting equipment 5 to move, the cutting equipment 5 operates and cuts the plurality of square wood bodies 7, so as to repeatedly operate and continuously cut the plurality of square wood bodies 7 to a fixed length, through the cooperation of the above structure, the U-shaped baffle 802 and the scale 807 can adjust the length of the square wood body 7, the push plate 809 can push the plurality of square wood bodies 7 to cut off at the same time, and the fixed plate 816 can ensure the stability of the square wood body 7 during cutting, avoid manual marking for cutting the square wood body 7 to a fixed length, the device only needs to cut the square wood body 7 to a fixed length once, greatly improves the efficiency of square wood cutting to a fixed length.When it is necessary to ensure the stable movement of the plurality of square wood bodies 7, one end of the plurality of square wood bodies 7 is first attached to the push plate 809 and placed on the top surface of the workbench 1, and then the electric telescopic rod 907 is operated through the control terminal 3, the electric telescopic rod 907 is operated to drive the connecting block 906 to move, the connecting block 906 is moved to drive the two hinged plates 905 to move, the two hinged plates 905 are moved to drive the two L-shaped clamping plates 903 to move in opposite directions on the surface of the cross rod 902, and when the two L-shaped clamping plates 903 can firmly clamp and fix the plurality of square wood bodies 7, the plurality of square wood bodies 7 can be cut off through the fixed-length cutting assembly 8. Through the cooperation of the above structure, the two L-shaped clamping plates 903 can horizontally clamp and fix the plurality of square wood bodies 7, ensure the stability of the plurality of square wood bodies 7 when moving, and avoid the plurality of square woods from being cut obliquely, so as to cause the cutting surface to be inclined.
[0041] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above embodiments made according to the technical essence of the present application without departing from the technical scheme of the present application still belongs to the protection scope of the technical scheme of the present application.
Claims
1. A square timber length-cutting apparatus, characterized by comprising: The utility model relates to a cutting device for cutting wood, which comprises a workbench (1) with a plurality of supporting legs (2) fixedly installed on the bottom surface of the workbench (1), a control terminal (3) fixedly installed on one side surface of the workbench (1), a plurality of square wood bodies (7) movably placed on the top surface of the workbench (1), a fixed-length cutting assembly (8) provided on the top surface of the workbench (1), a clamping assembly (9) provided on one side surface of the fixed-length cutting assembly (8), a vertical plate (4) fixedly installed on each end of the top surface of the workbench (1), a first threaded rod (401) connected between the two vertical plates (4) through a bearing, a first motor (402) fixedly installed on one side surface of one of the vertical plates (4), an output end of the first motor (402) movably penetrating through the vertical plate (4) and fixedly connected with one end of the first threaded rod (401), a long rod (403) fixedly installed between the two vertical plates (4), a movable block (404) threadedly connected with the surface of the first threaded rod (401), the movable block (404) movably sleeved on the surface of the long rod (403), a cutting device (5) fixedly installed on one side surface of the movable block (404), and a cutting groove (6) formed in the top surface of the workbench (1), wherein a part of the cutting knife of the cutting device (5) is located inside the cutting groove (6). The fixed-length cutting assembly (8) comprises two T-shaped grooves (801) formed in one end of the top surface of the workbench (1), a U-shaped baffle (802) movably sleeved inside the two T-shaped grooves (801), a supporting plate (803) fixedly installed on one side surface of the U-shaped baffle (802), a fastening bolt (804) threadedly penetrating through the top surface of the supporting plate (803), a limiting plate (805) connected with the bottom end surface of the fastening bolt (804) through a bearing, a plurality of anti-skid strips fixedly installed on the bottom surface of the limiting plate (805), and the limiting plate (805) located between the workbench (1) and the supporting plate (803).
2. A square timber length-cutting apparatus according to claim 1, characterized in that: The other side surface of the U-shaped baffle (802) is fixedly installed with an L-shaped finger plate (806), the other side surface of the workbench (1) is fixedly installed with a scale (807), one side inner wall surface of the L-shaped finger plate (806) abuts against one side surface of the scale (807), and the zero scale line position of the scale (807) is kept in the same horizontal line as the cutting knife of the cutting device (5).
3. A square timber length-cutting apparatus according to claim 2, characterized in that: 4. A square timber length-cutting apparatus according to claim 1, characterized in that: The other end of the workbench (1) is surrounded by a movable sleeve of a return type plate (808), one side surface of the return type plate (808) is fixedly installed with a push plate (809), the push plate (809) is located on the upper side of the workbench (1), one end surface of the plurality of square wood bodies (7) is attached to one side surface of the push plate (809), the bottom surface of the workbench (1) is fixedly installed with two extension plates (810), the second threaded rod (811) is connected between the two extension plates (810) through a bearing, the bottom side of the return type plate (808) is threadedly connected to the surface of the second threaded rod (811), one side surface of one of the extension plates (810) is fixedly installed with a second motor (812), the output end of the second motor (812) is movably penetrated through one of the extension plates (810) and is fixedly connected to one end of the second threaded rod (811).
5. A square timber length-cutting apparatus according to claim 1, characterized in that: The center of the top surface of the workbench (1) is fixedly installed with a U-shaped plate (813), both side surfaces of the U-shaped plate (813) are provided with vertical through grooves (814), the top surface of the U-shaped plate (813) is fixedly installed with a gas cylinder (815), the output end of the gas cylinder (815) is movably penetrated through the top surface of the U-shaped plate (813), the output end of the gas cylinder (815) is connected with a fixed plate (816) through a bearing, both ends of the fixed plate (816) are movably attached to the inside of the two vertical through grooves (814).
6. A square timber length-cutting apparatus according to claim 1, characterized in that: The clamping assembly (9) comprises two horizontal plates (901), both horizontal plates (901) are symmetrically fixedly installed on one side surface of the return type plate (808), both horizontal plates (901) are located on the upper side of the top surface of the workbench (1), a horizontal rod (902) is fixedly installed between both horizontal plates (901), both L-shaped clamping plates (903) are movably attached to the surface of the horizontal rod (902), a horizontal through groove (904) is formed in one side surface of the return type plate (808), both side surfaces of both L-shaped clamping plates (903) are movably attached to the inner wall surfaces of the upper and lower ends of the horizontal through groove (904).
7. A square timber length-cutting apparatus according to claim 6, characterized in that: Both ends of both L-shaped clamping plates (903) are hingedly connected with a hinge plate (905), a connecting block (906) is hingedly connected between both hinge plates (905), an electric telescopic rod (907) is fixedly installed on the other side surface of the return type plate (808), the output end of the electric telescopic rod (907) is fixedly connected with one side surface of the connecting block (906).