Automatic wood cutting system with fixed module for precision cutting of wood

Abstract

The present invention relates to an automatic wood cutting system equipped with a fixing module for precise cutting of wood, and more specifically, to an automatic wood cutting system equipped with a fixing module for precise cutting of wood that cuts supplied wood to a set length and discharges it, separates and collects wood dust generated during the cutting process and uses it to produce wood pellets, and prevents the position of the wood from changing due to impact or vibration occurring when the wood comes into contact with the saw blade during the cutting process, thereby improving the accuracy and stability of the cutting.

Description

Technology Field

[0001] The present invention relates to an automatic wood cutting system equipped with a fixing module for precise cutting of wood, and more specifically, to an automatic wood cutting system equipped with a fixing module for precise cutting of wood that cuts supplied wood to a set length and discharges it, separates and collects wood dust generated during the cutting process and uses it to produce wood pellets, and prevents the position of the wood from changing due to impact or vibration occurring when the wood comes into contact with the saw blade during the cutting process, thereby improving the accuracy and stability of the cutting. Background Technology

[0002] Generally, an automatic wood cutting system equipped with a fixed module for precision cutting refers to equipment that automatically cuts wood to predetermined specifications. It is primarily used in furniture manufacturing, construction material processing, and woodworking production lines, with the main objectives being to improve work efficiency, ensure precision, and enhance worker safety.

[0004] A typical configuration of an automatic wood cutting system equipped with a fixed module for precise cutting of such wood includes a feeder that automatically supplies raw wood or plywood to the equipment, a conveyor that moves the wood at a constant speed and guides it to the cutting position, a cutting unit that cuts to a specified length using a saw blade (circular saw, band saw, etc.), sensors (optical sensors, linear scales, etc.) for controlling the cutting length and position, an automatic control system (PLC, CNC) that automatically controls the cutting operation according to pre-entered specifications, a dust collector to maintain a clean working environment by removing sawdust generated during cutting, and a discharge device that automatically sorts or stacks the cut wood.

[0006] An automatic wood cutting system equipped with a fixed module for precise cutting of wood as described above includes the process of wood input, in which raw materials are placed onto an automatic feeder; cutting, in which a sensor measures the length or thickness and a conveyor moves the material to an accurate position, and cutting the wood to a predetermined length; and automatically discharging or loading the cut wood.

[0007] An automated wood cutting system equipped with a fixed module for precise cutting of such wood has the advantages of reducing cutting speed compared to manual work, enabling precise cutting, reducing raw material costs through the application of an optimal cutting algorithm, and improving work efficiency through reduced labor costs and unmanned operation at night.

[0009] Meanwhile, safety considerations for an automatic wood cutting system equipped with a fixed module for precision cutting of wood include accidents caused by saw blades, accidents caused by pinching or entrapment during automatic feeding, fire hazards and respiratory diseases caused by sawdust and dust, reduced cutting precision, and material supply errors.

[0010] Accidents caused by saw blades can occur when a worker approaches a rotating blade. To address this, a transparent cover and protective guard are provided to block the work area while allowing visibility into the interior where the blade is located. Additionally, non-contact detection sensors, such as proximity sensors and light curtains, are installed to stop the operation of the saw blade if a worker's hand approaches.

[0011] Accidents caused by pinching or entrapment during automatic conveying involve hands or clothing getting caught in the conveying device and resulting in injury to the worker. Therefore, emergency stop buttons are installed in various places on the equipment, or a two-hand operation switch that requires both hands to be pressed simultaneously to operate, or an emergency reverse mode that automatically moves in the opposite direction when material gets pinched is provided.

[0012] Fire hazards and respiratory diseases caused by sawdust and dust include explosions that occur when sawdust or dust generated during wood cutting accumulates, and respiratory diseases that develop when workers inhale sawdust or dust. To address this, a dust collector for automatically sucking in and filtering sawdust or a HEPA filter capable of capturing even fine dust may be provided, and explosion-proof motors and equipment including them may be provided to enable safe operation even in dusty environments.

[0013] Meanwhile, a decrease in cutting precision can result in quality defects caused by errors in measuring wood length or deviations in cutting angles. To address this, a linear scale-based measuring device can be provided to enable high-precision position control, or an automatic correction system can be used to correct errors in real-time after cutting, or an infrared or laser guide can be used to display the cutting position before operation.

[0014] Furthermore, the issue of material supply errors involves malfunctions or equipment damage caused by interference during wood input; to resolve this, it is advisable to check the presence and status of wood supply using an automatic loading recognition sensor or to stably supply one sheet at a time using a step feeder.

[0016] Among the aforementioned problems, the decrease in cutting precision mainly occurs when the wood transport position cannot be accurately measured or the cutting timing cannot be accurately controlled; in addition to the above solutions, a high-precision servo motor, a ball screw transport device, or a smart control interface may be provided.

[0018] However, the aforementioned solution has the problem of requiring high costs for installation and maintenance, and increasing the size of the entire cutting device to install the configuration.

[0020] Meanwhile, wood or wood boards undergo a cutting and processing process to have a predetermined width and length. In order to obtain wood with a predetermined width, length, and thickness required by the end user, the raw wood in an unprocessed state is cut lengthwise and then undergoes a primary cutting and processing process to have a predetermined thickness.

[0021] The wood obtained from the first cutting process is formed with a predetermined thickness and is long in the longitudinal direction. It is common practice to form a single assembly by fixing and banding multiple pieces of wood, and then undergo a second cutting process to reprocess the wood into a predetermined length for use in the required location or for commercialization.

[0023] In this secondary cutting process, it was common to cut the wood to a predetermined length using a wood cutting device in which the wood of the provided assembly is separated one by one, a long bed portion is provided for seating the separated wood, a cutting rotary blade is positioned at the lower part of the bed portion, and a guide plate is formed on one side of the bed portion to guide the wood and transport it toward the cutting rotary blade.

[0024] Conventional wood cutting devices of this type require a worker to individually position the wood to be cut on one side of the bed section, advance it along a guide plate installed on the side to the desired length, and then fix and support the advanced wood using a separate stopper device or the like, and then cut it by a rotary cutting blade. Since the worker must hold one side of the wood while close to the position of the rotary cutting blade and watch until the wood is completely cut, and then load the cut wood into a separate loading unit, there was a problem in that the worker could not be safely protected from the danger of the rotary cutting blade, leading to unforeseen safety accidents. Prior art literature

[0025] Republic of Korea Registered Patent No. 10-2173931 (Registered on Oct. 29, 2020) Republic of Korea Registered Patent No. 10-2026937 (Registered on Sep. 24, 2019) The problem to be solved

[0026] The present invention is proposed to solve the above problems and aims to provide an automatic wood cutting system equipped with a fixing module for precision cutting of wood, which improves the accuracy and stability of cutting by cutting supplied wood to a set length and discharging it, separating and collecting wood dust generated during the cutting process and using it to produce wood pellets, and preventing the position of the wood from changing due to impact or vibration that occurs when the wood comes into contact with the saw blade during the cutting process.

[0028] In particular, the present invention aims to provide an automatic wood cutting system equipped with a fixing module for precise wood cutting that enables precise cutting by fixing the moved wood for cutting during the cutting process to prevent positional displacement. means of solving the problem

[0029] To achieve the above objective, the present invention comprises: a work table having a flat upper surface for moving wood for cutting, a plurality of legs provided to have a predetermined height, and a saw blade hole formed through to allow a part of a saw blade for cutting wood to enter and exit;

[0030] A supply conveyor provided on one side of the above-mentioned work table for supplying wood for cutting;

[0031] A supply actuator that advances the wood of the above supply conveyor to the above work table;

[0032] An alignment unit provided on the upper surface of the above-mentioned work table for aligning supplied cutting wood;

[0033] A cutting unit comprising a saw blade that is positioned to be movable up and down above the above-mentioned work table and operates by an applied power source and signal to cut supplied wood for cutting;

[0034] A pellet manufacturing unit that collects wood dust generated during the process of cutting wood for cutting through the above-mentioned cutting unit, and manufactures wood pellets by transporting and compressing the collected wood dust;

[0035] A fixing module that supports both the left and right sides and the shear of the wood to be cut during the process of cutting the wood to be cut by the above-mentioned cutting part to prevent positional displacement of the wood to be cut;

[0036] The above fixed module is,

[0037] A pair of horizontal fixing parts arranged symmetrically on the upper surface of the above-mentioned work table and supporting the left and right sides of the moved cutting wood, respectively, and

[0038] It is characterized by including a tip fixing part that is movably arranged along the direction of movement of the wood to be cut on the upper surface of the above-mentioned work table and contacts and supports the tip of the wood to be cut.

[0040] Additionally, the pair of horizontal fixing members are characterized by comprising a pair of horizontal supports arranged to face each other and movable in a direction of moving closer or further apart from each other, a pair of horizontal driving members that provide power to move each of the pair of horizontal supports while operating by an applied power source and signal, and elastic pads having self-elastic restoring force provided on each of the pair of horizontal supports to prevent damage caused by friction with the cutting wood that comes into contact with them.

[0042] In addition, the tip fixing part is characterized by comprising: a movable slot formed along the direction of movement of the wood to be cut on the work table; a support bar arranged to be movable along the movable slot; a support plate rotatably provided at one end in the longitudinal direction of the support bar and abutting and supporting the tip of the wood to be cut; an elastic body arranged such that one end in the longitudinal direction abuts the movable slot and the other end in the longitudinal direction abuts the support bar to elastically support the support bar; a rotating cylinder including a body rotatably installed on the work table and a rod arranged to be accessible within the body, with the tip connected to the support plate.

[0044] At this time, the above-mentioned movable slot is characterized by further including a folding cover that is arranged to be folded or unfolded according to the movement of the support bar to prevent wood dust generated during cutting from entering.

[0046] In addition, the pair of horizontal fixing parts are characterized by further including a distance sensing sensor for detecting the distance between them or the distance to the cutting wood moving between them.

[0048] In addition, the alignment unit is characterized by comprising a pair of brackets arranged to be close to or apart from each other on the work table, formed in the shape of a plate having a predetermined area; a plurality of alignment rollers arranged at a distance from each other on the pair of brackets, each rotatably arranged by friction with the moving wood for cutting; and a plurality of optical sensors provided on each of the pair of brackets to check whether the wood for cutting is fed and the length traveled to the saw blade through the moving speed of the wood, thereby ensuring that the wood for cutting is cut to a set length.

[0050] In addition, the pellet manufacturing unit is characterized by including a storage tank provided at the bottom of the work table for storing wood powder generated when wood for cutting is cut by the saw blade, a conveying screw for conveying the wood powder stored in the storage tank, and a pellet manufacturing machine that receives the wood powder from the conveying screw, compresses it, and then cuts it to manufacture wood pellets. Effects of the invention

[0051] The present invention, as described above, has the advantage of enabling precise cutting of wood for cutting, thereby minimizing quality defects and improving marketability.

[0053] In particular, the present invention has the advantage of preventing the position of the wood to be cut from changing due to vibrations and shocks occurring during the cutting process, thereby enabling precise cutting to a set length, and improving work safety by fixing the position of the wood to be cut. Brief explanation of the drawing

[0054] FIG. 1 is a schematic diagram illustrating an automatic wood cutting system equipped with a fixing module for precision cutting of wood according to the present invention. FIG. 2 is an exemplary diagram illustrating an alignment part constituting the present invention. FIG. 3 is an exemplary diagram illustrating a cutting section constituting the present invention. FIG. 4 is an exemplary diagram illustrating a horizontal fixing part of a fixing module constituting the present invention. FIG. 5 is an exemplary diagram illustrating the tip fixing part of a fixing module constituting the present invention. Specific details for implementing the invention

[0055] In addition to the above objectives, other objectives and features of the present invention will become apparent through the description of embodiments with reference to the accompanying drawings.

[0057] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0059] Hereinafter, a preferred embodiment of an automatic wood cutting system equipped with a fixing module for precise cutting of wood according to the present invention will be examined in detail with reference to the attached drawings.

[0061] First, the automatic wood cutting system (1) provided with a fixed module for precision cutting of wood according to the present invention comprises: a work table (10) having a flat upper surface for moving wood to be cut, a plurality of legs (12) provided to have a predetermined height, and a saw blade hole (14) formed through to allow a part of a saw blade for cutting wood to enter and exit; a supply conveyor (20) provided on one side of the work table (10) for supplying wood to be cut; a supply actuator (30) for advancing wood from the supply conveyor to the work table (10); an alignment unit (40) provided on the upper surface of the work table (10) for aligning the supplied wood to be cut; a cutting unit (50) including a saw blade (55) arranged to be movable up and down above the work table (10) and operating by an applied power source and signal to cut the supplied wood to be cut; and wood dust generated during the process of cutting wood to be cut through the cutting unit (50). It includes a pellet manufacturing unit (70) that collects dust and compresses the collected wood powder after transporting it to manufacture wood pellets, and a fixing module (80) that supports the left and right sides and shear of the wood to be cut during the process of cutting the wood to be cut by the cutting unit (50) to prevent positional displacement of the wood to be cut.

[0062] The unexplained symbol (60) in the drawing is a discharge conveyor (60) that discharges cutting wood cut through the cutting section (50).

[0064] The above-described work table (10) provides a workspace in which the movement, cutting, and discharge of wood for cutting take place, and includes a top surface formed to have a predetermined width and length and a plurality of legs (12) that support the top surface from below so that it is positioned at a predetermined height.

[0065] And the top plate is provided with a saw blade hole (14) formed vertically so that a part of the saw blade (55) of the cutting section (50) described later for cutting wood can enter and exit.

[0066] The width, length, and height of the work table (10) can be changed depending on the type, size, etc. of the wood supplied for cutting, and are not limited to the embodiments shown in the drawings.

[0067] Meanwhile, the above-mentioned work table (10) is provided with a perforated plate (13) having a plurality of holes formed therein to transfer sawdust and wood powder generated during the process of cutting wood (W) by the cutting unit (50) described later to the pellet manufacturing unit (70).

[0068] Here, the perforated plate (13) is made of a mesh-shaped net so that sawdust and wood powder can be stored in a storage tank (71) provided at the bottom of the work table (10).

[0070] The above supply conveyor (20) is provided on one side of the work table (10) to supply wood for cutting to the work table (10), and the supply conveyor (20) supplies wood for cutting while rotating evenly over a predetermined distance.

[0071] That is, the supply conveyor (20) rotates one step at a time to supply wood for cutting to the work table (10) over a certain distance, and after moving the wood for cutting by a set length, it stops temporarily to restrict the movement of the wood for cutting.

[0072] For example, the above-mentioned supply conveyor (20) is provided with a fixed jig (21) that allows for width adjustment and on which wood (W) to be cut is placed. Here, it is preferable that the width be formed to be the same as the width of ordinary wood. In addition, it is preferable that the one-step movement speed of the supply conveyor (20) be linked to the speed of cutting the wood (W).

[0074] The above supply actuator (30) is installed in alignment with the work table (10) at the front of the supply conveyor (20) and advances the wood for cutting (W) placed on the fixed jig (21) of the supply conveyor (20) to the work table (10). At this time, the supply actuator (30) is extended to a length sufficient to transport the wood for cutting (W) on the supply conveyor (20) to the alignment part (40) of the work table (10), and any one of pneumatic, hydraulic, or electric cylinders may be applied.

[0076] The alignment unit (40) is for aligning the position of the wood (W) to be cut, which is received from the supply actuator (30), before cutting. To this end, the alignment unit (40) comprises a pair of brackets (41) that are formed in the shape of a plate having a predetermined area and are arranged to be close to or apart from each other on the work table (10); a plurality of alignment rollers (42) that are spaced apart from each other on the pair of brackets (41) and are each arranged to be rotatable by friction with the moving wood to be cut; and a plurality of optical sensors (43) each provided on the pair of brackets (41) to check whether the wood to be cut is fed and the length traveled to the saw blade (55) through the speed of the moving wood, so that the wood to be cut is cut to a set length.

[0078] A pair of the above brackets (41) are installed facing each other on the work table (10) to align the wood (W) to be cut in a straight direction and guide it to the cutting section (50), and are formed in the shape of plates having a predetermined length and height.

[0079] At this time, a pair of the above brackets (41) are provided with guide surfaces () formed by bending one end of the longitudinal direction in which the cutting wood (W) is fed in toward each other at a predetermined angle so that the cutting wood (W) fed in comes into contact with the guide surfaces () and guides the movement path.

[0080] In addition, a pair of brackets (41) are installed to be movable in the horizontal direction so as to adjust the distance between them on the work table (10), and the distance between the pair of brackets (41) is adjusted in correspondence with the width of the moving wood (W).

[0081] Here, the horizontal movement of a pair of brackets (41) is achieved by providing a movable slot (not shown) on the upper surface of a work table (10), and by including a fixing pin (not shown) that is movably inserted into the movable slot at the bottom of the bracket (41) and a fixing nut (not shown) for fixing it, moving the bracket (41) to a set position and then tightening the fixing nut to fix the position of the bracket (41).

[0083] The above alignment rollers (42) are provided in multiple numbers spaced apart from each other on a pair of brackets (41) and rotate by the frictional force generated when they come into contact with the side of the moving wood for cutting (W), thereby guiding the movement of the wood for cutting (W) and preventing the moving wood for cutting (W) from directly colliding with the brackets (41), thus preventing damage to the wood for cutting (W) and the brackets (41).

[0084] To this end, the alignment roller (42) is provided with an outer shell made of a soft material having self-elastic restoring force on the outer surface that comes into contact with the wood (W) for cutting, thereby minimizing damage caused by collision with the wood (W). Examples of such materials may include rubber, urethane, and silicone, but are not limited thereto.

[0085] In addition, the alignment roller (42) is connected to a separate drive motor (not shown) via a power transmission means such as a chain, gear, or belt, and receives power from the drive motor to rotate and support the movement of the wood (W) to be cut, and during the process in which the wood to be cut is cut by the cutting part (50) described later, the power is limited and the movement of the wood to be cut is restricted.

[0087] The above optical sensor (43) detects whether the wood (W) for cutting is being fed and the speed of movement, and checks the distance traveled so that the wood (W) for cutting is cut to a set length. Such optical sensors (43) may be installed on at least two of the pair of brackets (41), and may be installed at the position where the wood (W) for cutting is fed in and at the position where it is discharged, respectively, and may also be provided in the center of the bracket (41) in the longitudinal direction.

[0089] The cutting section (50) includes a saw blade (55) positioned to be movable up and down above the work table (10) and cuts the wood (W) for cutting that has passed through the alignment section (40) to a set length.

[0090] The cutting section (50) for this purpose includes a frame (51), a lifting / lowering actuator (52), a lifting / lowering frame (53), a rotary motor (54), a saw blade (55), and an air knife (56).

[0092] The above frame (51) has a predetermined length and includes a pair of legs that are each positioned vertically on the upper surface of the above work table (10) and spaced apart from each other, and a horizontal bar connecting the upper ends of the pair of legs, and the legs are provided with guide rails (511) on mutually facing surfaces to guide the saw blade (55) when it rises or falls.

[0093] The above-mentioned lifting actuator (52) is installed vertically downward from the upper surface of the frame (51) and has a saw blade (55) installed at the bottom to adjust the height of the saw blade (55). For this purpose, it may be composed of a pneumatic, hydraulic, or electric cylinder.

[0094] The above lifting / lowering frame (53) is formed in the shape of a plate having a predetermined thickness and is movably installed on guide rails (511) formed on the frame (51) such that when the lifting / lowering actuator (52) is formed as a cylinder, the rod constituting the cylinder is coupled to it and when the rod is withdrawn or stored in the body constituting the cylinder, it lowers or rises in conjunction with it.

[0095] The rotary motor (54) is installed on the lifting / lowering frame (53) and provides power to rotate the saw blade (55) while operating by the applied power and signal.

[0096] The saw blade (55) is connected to the rotary motor (54) via a power transmission means such as a chain, gear, or belt to receive power and rotate to cut the wood (W) for cutting. It is coupled to the lifting / lowering actuator (52) and positioned to be able to rise or fall, and is positioned directly above the saw blade hole (14) provided in the work table (10). It is lowered so that a portion of it is inserted into the saw blade hole (14) during the process of cutting the wood (W).

[0097] The above air knife (56) sprays compressed air to collect sawdust and wood dust generated during the process of the saw blade (55) cutting the wood (W) at a predetermined location. It is provided on the lifting / lowering frame (53) and sprays compressed air toward the saw blade (55) to move the sawdust and wood dust generated during cutting to a storage tank (71) through a perforated plate (13) provided on the work table (10).

[0098] Two or more of these air knives (56) may be provided spaced apart from each other, and if necessary, multiple of them may be arranged spaced apart.

[0100] The above pellet manufacturing unit (70) collects sawdust and wood powder generated during the cutting process of wood (W) for cutting and compresses them to manufacture wood pellets, and includes a storage tank (71) provided at the bottom of a work table (10) for storing sawdust and wood powder, a conveying screw (72) for conveying the wood powder stored in the storage tank (71), and a pellet manufacturing machine (73) that receives the wood powder from the conveying screw (72), compresses it, and then cuts it to manufacture wood pellets.

[0101] The pellet manufacturing unit (70) transfers the sawdust and wood powder stored in the storage tank (71) to the pellet manufacturing machine (73) through the transfer screw (72), and the pellet manufacturing machine (73) manufactures wood pellets through a predetermined process using the received sawdust and wood powder. Here, the specific structure and operation relationship of the pellet manufacturing machine (73) are known, so a detailed description and illustration are omitted.

[0103] The above-mentioned fixed module (80) supports both the left and right sides and the shear of the wood to be cut during the process of cutting the wood to be cut through the cutting section (50) to prevent positional displacement of the wood to be cut, and is intended to prevent cutting defects caused by the change in the position of the wood to be cut (W) due to vibration and impact generated when the saw blade (55) comes into contact with the wood to be cut (W).

[0104] A fixing module (80) for this purpose includes a pair of horizontal fixing parts (81) that are arranged symmetrically on the upper surface of the work table (10) and support the left and right sides of the moving wood to be cut, respectively, and a tip fixing part (82) that is arranged to move along the direction of movement of the wood to be cut on the upper surface of the work table (10) and supports the tip of the wood to be cut by contacting it.

[0106] A pair of horizontal fixing members (81) each contact and support the left and right sides of the wood (W) to be cut, and include a pair of horizontal support members (811) arranged to face each other and movable in a direction that is close to or far apart from each other, a pair of horizontal driving members (812) that provide power to move each of the pair of horizontal support members (811) while operating by an applied power and signal, and elastic pads (813) provided on each of the pair of horizontal support members (811) and having self-elastic restoring force to prevent damage caused by friction with the wood to be cut.

[0108] The above pair of horizontal supports (811) are positioned facing the left and right sides of the wood (W) for cutting, respectively, and are positioned to face each other and are movable in directions that are close to or apart from each other.

[0109] That is, a pair of horizontal supports (811) come into contact with the left and right sides of the wood to be cut (W) that has moved between them, thereby supporting it and preventing the position of the wood to be cut (W) from changing due to vibrations transmitted from the saw blade (55) and vibrations that occur when the saw blade (55) and the wood to be cut (W) come into contact.

[0110] A pair of horizontal supports (811) for this purpose are formed in the shape of plates having a predetermined area, and the shape of the horizontal supports (811) can be varied and is not limited to the embodiments shown in the drawings.

[0111] The above pair of horizontal drive units (812) provide power to move the above pair of horizontal supports (811) in a horizontal direction to bring them closer together or separate them from each other, and together with the horizontal supports (811), they may be composed of pneumatic, hydraulic, or electric cylinders.

[0112] The above elastic pad (813) is provided on one side of the horizontal support (811) to prevent damage to the horizontal support (811) caused by friction when it comes into contact with the wood for cutting (W), and is made of a soft material having its own elastic recovery force so as to press the side of the wood for cutting (W) to obtain solid support force.

[0113] It is preferable that such elastic pads (813) be detachably connected to horizontal supports (811) so that they can be easily replaced if damaged during use.

[0115] Meanwhile, a pair of the above-mentioned horizontal fixing parts (81) further include a distance sensing sensor (814) for detecting the distance between them or the distance to the cutting wood moving between them.

[0116] The distance sensing sensor (814) is used to detect the distance between a pair of horizontal fixing parts (81) to determine the position of each horizontal fixing part (81), or to detect the distance between the horizontal fixing part (81) and the cutting wood (W) to control the movement distance of the horizontal fixing part (81).

[0117] The detection value of such distance sensing sensor (814) and the distance adjustment of the horizontal fixing part (81) using the detection value are controlled through a control part (not shown).

[0119] The above-mentioned tip fixing part (82) contacts and supports the tip, i.e., the front part, of the moved cutting wood, thereby preventing the cutting wood (W) being cut by the saw blade (55) from moving forward.

[0120] To this end, the tip fixing part (82) comprises a movable slot (821) formed along the direction of movement of the wood to be cut on the work table (10), a support bar (822) positioned to be movable along the movable slot (821), a support plate (823) rotatably provided at one end in the longitudinal direction of the support bar (822) and in contact with and support the tip of the wood to be cut, an elastic body (824) positioned so that one end in the longitudinal direction contacts the movable slot (821) and the other end in the longitudinal direction contacts the support bar (822) to elastically support the support bar (822), a body (826) rotatably installed on the work table (10), and a rotating cylinder (825) including a rod (827) positioned to be accessible within the body (826) and having its tip connected to the support plate (823).

[0122] The above-mentioned movable slot (821) is a slot formed along the direction in which the cutting wood (W) moves on the above-mentioned work table (10), and one or more slots may be provided, and if two or more slots are provided, they may be provided adjacent to each other with a gap between them.

[0123] The support bar (822) is positioned to be movable along the movable slot (821) and is formed in the shape of a rod having a predetermined length and is positioned to be movable inside the movable slot (821).

[0124] The support plate (823) is provided at one end in the longitudinal direction of the support bar (822) and is rotatably provided relative to the support bar (822) so as to contact and support the leading edge of the wood (W) during the cutting process, and rotates to be received in the moving slot (821) when the wood (W) moves toward the discharge section after the cutting is completed, so as not to hinder the movement of the wood.

[0125] This support plate (823) is hinged to one end of the support bar (822) and rotatably positioned, and is rotated by a rotating cylinder (825) described later.

[0126] The above elastic body (824) is positioned in the movable slot (821), with one end in the longitudinal direction in contact with one surface of the movable slot (821) and the other end in the longitudinal direction in contact with the support bar (822), thereby elastically supporting the support bar (822). When the support bar (822) moves due to the moving cutting wood (W), it is tensioned, and when the cutting is completed and the support plate (823) is stored in the movable slot (821), it is restored, thereby moving the support bar (822) back to its original position.

[0127] At this time, the elastic body (824) may be formed such that a pair is symmetrically arranged in the direction of movement of the support bar (822), so that when one is stretched, the other contracts.

[0128] The above-mentioned rotary cylinder (825) rotatably supports the above-mentioned support plate (823) and includes a body (826) rotatably installed on the above-mentioned work table (10), and a rod (827) disposed to be accessible from the body (826) and having its tip connected to the above-mentioned support plate (823).

[0129] This rotary cylinder (825) operates by the applied power and signal to move the rod (827) forward or backward, thereby rotating the support plate (823) so that it is exposed to the upper surface of the work table (10) or stored in the movable slot (821).

[0131] The tip fixing part (82) formed as described above operates such that when the wood for cutting (W) moves, the rotating cylinder (825) rotates the support plate (823) so that it is exposed on the upper surface of the work table (10), causing the tip of the wood for cutting (W) to come into contact. Subsequently, during the process of moving and cutting the wood for cutting, the rotating cylinder (825) operates to maintain the position of the support plate (823). After the cutting is completed, the rod (827) is retracted into the body (826) and rotated so that the support plate (823), which is exposed above the work table (10), is received into the moving slot (821), thereby allowing the wood for cutting (W) that has been cut to move, and the configuration including the support bar (822) returns to its original position by means of the elastic body (824).

[0133] Meanwhile, the above-mentioned movable slot (821) further includes a folding cover (83) that is arranged to be folded or unfolded according to the movement of the support bar (822) to prevent wood dust generated during cutting from entering.

[0135] The above-mentioned folding cover (83) closes the movable slot (821) by folding or unfolding in conjunction with the movement of the support bar (822), and as the support bar (822) moves, a part of the movable slot (821) is opened, thereby preventing sawdust or wood dust generated when cutting wood for cutting from entering through the opened movable slot (821).

[0136] The above-mentioned folding cover (83) is formed in a bellows shape so that it can be folded or unfolded, with both ends connected to one end of the movable slot (821) and the support bar (822), respectively, and a pair is arranged on both sides based on the support bar (822).

[0138] As described above, the present invention has been explained by specific details such as specific components, limited embodiments, and drawings; however, this is provided merely to aid in a more comprehensive understanding of the invention, and the invention is not limited to the above embodiments. A person skilled in the art can make various modifications and variations from this description.

[0140] Accordingly, the scope of the present invention should not be limited to the described embodiments, and all things equivalent to or having equivalent variations to the claims set forth below, as well as the claims set forth below, shall be considered to fall within the scope of the concept of the present invention. Explanation of the symbols

[0142] 1: Automatic wood cutting system equipped with a fixing module for precision wood cutting 10: Work table 20: Supply conveyor 30: Supply actuator 40 : Alignment section 41 : Bracket 42 : Alignment roller 43 : Optical sensor 50 : Cutting section 51 : Frame 52 : Lift / Lower Actuator 53 : Lifting / Lowering Frame 54 : Rotary Motor 55 : Saw blade 56 : Air knife 57 : Guide rail 60: Discharge conveyor 70: Pellet Manufacturing Department 71 : Storage tank 72 : Transfer screw 73 : Pellet maker 80 : Fixed module 81 : Horizontal fixing part 82 : Tip fixing part 83 : Foldable cover 811: Horizontal support 812: Horizontal drive unit 813 : Elastic pad 814 : Distance sensing sensor 821 : Movable slot 822 : Support bar 823 : Support plate 824 : Elastic body 825 : Rotary cylinder 826 : Body 827 : Load

Claims

Claim 1 A table (10) having a flat upper surface for moving wood for cutting; a supply conveyor (20) provided on one side of the work table (10) for loading wood for cutting; a supply actuator (30) for moving wood delivered from the supply conveyor (20) on the work table (10); an alignment unit (40) provided on the upper surface of the work table (10) for aligning the supplied wood for cutting; a cutting unit (50) arranged to be movable up and down above the work table (10) and operating by an applied power source and signal to cut the supplied wood for cutting; wherein a pellet manufacturing unit (70) for collecting wood dust generated during the process of cutting the wood for cutting through the cutting unit (50), and compressing the collected wood dust after transporting it to manufacture wood pellets; and a fixing module (80) for supporting both left and right sides and the shear of the wood for cutting during the process of cutting the wood for cutting by the cutting unit (50) to prevent positional displacement of the wood for cutting.The fixed module (80) further comprises a pair of horizontal fixing parts (81) that are arranged symmetrically on the upper surface of the work table (10) and respectively contact and support the left and right sides of the wood to be cut that has been moved, and a tip fixing part (82) that is arranged to be movable along the direction of movement of the wood to be cut on the upper surface of the work table (10) and contacts and supports the tip of the wood to be cut. The tip fixing part (82) comprises a movable slot (821) formed along the direction of movement of the wood to be cut on the work table (10), a support bar (822) that is arranged to be movable along the movable slot (821), a support plate (823) that is rotatably arranged at one end in the longitudinal direction of the support bar (822) and contacts and supports the tip of the wood to be cut, and one end in the longitudinal direction contacts the movable slot (821) and the other end in the longitudinal direction contacts the support bar (822). An automatic wood cutting system equipped with a fixed module for precision cutting of wood, characterized by comprising: an elastic body (824) arranged to be in contact with and elastically supporting the support bar (822); a body (826) rotatably installed on the work table (10); and a rotary cylinder (825) comprising a rod (827) arranged to be accessible from the body (826) and having its tip connected to the support plate (823). Claim 2 delete Claim 3 delete Claim 4 An automatic wood cutting system having a fixing module for precision cutting of wood, wherein, in claim 1, a pair of horizontal fixing members (81) comprises a pair of horizontal supports (811) arranged to face each other and movable in a direction of moving closer or further apart from each other, a pair of horizontal driving members (812) that provide power to move each of the pair of horizontal supports (811) while operating by an applied power source and signal, and an elastic pad (813) provided on each of the pair of horizontal supports (811) and having self-elastic restoring force to prevent damage caused by friction with the wood to be cut. Claim 5 delete

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