KR100326233B1 - Electric motor saw for working wood - Google Patents

Abstract

The present invention can immediately stop the operation of the circular saw when foreign matter or the human body of the worker near the circular saw during the cutting operation of wood, etc. Also, when the wood is not placed on the workbench, the circular saw is not operated Regarding the chainsaw for processing,

A frame movably coupled to the worktable and installed so that the top motor and the transfer motor can be transferred together; A circular saw installed on the frame to be rotated by the drive of the saw motor and forward and backward along the saw passage by the drive of the feed motor, for cutting wood and the like placed on the workbench; Sensing means for detecting at least one or more objects provided to the workbench or frame and when a circular saw is rotated by the driving of the saw motor, when a human body or a foreign object is close to the circular saw; Controlling the saw motor and feed motor so that the rotation of the circular saw can be stopped immediately by receiving the signal sensed by the sensing means and the feed motor can be reversed to immediately return the circular saw to its original position. It includes a control unit for.

Description

Chainsaw for wood processing {ELECTRIC MOTOR SAW FOR WORKING WOOD}

The present invention relates to a chain saw for wood processing, and more particularly, when a foreign object or a human body of a worker is close to a circular saw during a cutting operation such as wood, the operation of the circular saw can be stopped immediately. It relates to a chain saw for wood processing, in which a circular saw is not operated when not mounted.

In general, a circular saw is used to rotate the power of the drive motor to cut wood or plywood (hereinafter referred to as 'wood') to the desired size, the circular saw is installed rotatably on a workbench.

When the user wants to cut the wood to the desired size using the circular saw, the worker places the wood on the workbench on which the circular saw is fixed, and then the worker rotates the wood at a high speed by the driving motor. I was pushing myself by hand.

Therefore, the worker had to push the wood near the circular saw rotating at high speed, so there was a risk of safety accidents caused by the circular saw.

Attempts have been made to address the risks of the above mentioned safety accidents. Among them, a pair of guide rails are provided so that the circular saw rotating by the power of the driving motor can be moved forward and backward on the workbench where the wood is placed. Disclosed is a chain saw for wood processing comprising a feed motor having a guide roller for moving the circular saw forward and backward along a guide rail.

However, the conventional saw chain saw for wood processing simply cuts the wood while moving the circular saw automatically and automatically back and forth, so that the circular saw continues to rotate even if the foreign object or the human body approaches the circular saw during the cutting operation. The risk of a safety accident caused by the rotation of the saw still exists, as well as the circular saw is easily damaged by hitting various foreign matters, and the circular saw can operate even when wood is not placed on the workbench. There is a problem that there is a risk of.

In addition, the transfer motor has a problem that the feed screw is coupled to move the circular saw forward, backward so that the feed speed of the circular saw is slow.

Therefore, the present invention has been proposed to solve the above problems, an object of the present invention is to stop the operation of the circular saw immediately when foreign matter or the human body of the worker near the circular saw during the cutting operation of wood, etc.

In addition, when the wood is not placed on the workbench, the circular saw is not operated to prevent various safety accidents that may be caused by the operation of the circular saw during or before cutting the wood. It is to provide a chain saw for processing wood that can prevent damage in advance.

Another object of the present invention is to be able to firmly secure the wood and the like placed on the workbench to prevent the safety accident due to the departure of the wood during the cutting operation of the wood, as fast as possible forward and backward feed speed of the circular saw It is to provide a chain saw for wood processing to improve the workability by making it possible.

In addition, another object of the present invention is to provide a chain saw for processing wood so that the sawdust generated when cutting the wood with a circular saw can be quickly discharged to proceed with the cutting work of wood quickly.

In order to achieve the above object, the present invention includes a frame which is movably coupled to the worktable and installed so that the top motor and the transfer motor can be transferred together;

A circular saw installed on the frame to be rotated by the drive of the saw motor and forward and backward along the saw passage by the drive of the feed motor, for cutting wood and the like placed on the workbench;

Sensing means for detecting at least one or more objects provided to the workbench or frame and when a circular saw is rotated by the driving of the saw motor, when a human body or a foreign object is close to the circular saw;

Controlling the saw motor and feed motor so that the rotation of the circular saw can be stopped immediately by receiving the signal sensed by the sensing means and the feed motor can be reversed to immediately return the circular saw to its original position. It includes a control unit for.

1 is a perspective view showing a chainsaw for wood processing according to the present invention.

Figure 2 is a side view showing a chainsaw for wood processing according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, the chain saw for processing wood according to the present invention comprises a workbench 1 for cutting the wood and the like.

The worktable 1 is coupled to the frame 7 which is installed to be transported together with the top motor 3 and the transfer motor 5 to be movable, the frame 7 of the top motor 3 A circular saw 11 for cutting wood and the like, which is rotated by the drive and is moved forward and backward along the saw passage 9 by the drive of the transfer motor 5, is placed on the worktable 1.

The circular saw 11 is coupled to the frame 7 so as to be movable integrally, the saw passage 9 is formed in a constant size along the longitudinal direction on the worktable (1).

In addition, the worktable 1 is provided with a guide member 13 for guiding the forward and backward of the frame 7 so that the circular saw 11 is moved forward and backward along the saw passage 9 at regular intervals. do.

In addition, when the circular saw 11 is rotated by the driving of the saw motor 3, the worktable 1 or the frame 7 may prevent the various safety accidents caused by the rotation of the circular saw 11. Sensing means for detecting the human body or foreign matter close to the saw is provided.

The sensing means receives a signal detected thereon and displays a warning sound or a warning lamp, and immediately stops the rotation of the circular saw 11 and immediately drives the feed motor 5 to reverse the circular saw 11. The control unit 15 for controlling the top motor 3 and the transfer motor 5 is connected to return to the original position.

The sensing means is provided on one side of the work table (1), the light emitting unit 17 for emitting a light beam toward the circular saw (11) surroundings;

The reflection unit is installed in the frame 7 and reflects the light emitted from the light emitting unit 17 so that the foreign material or the human body is approached to the circular saw 11 and transmitted to the controller 15. 19).

The control unit 15 recognizes that foreign matter or a human body is close to the circular saw 11 when the light beam emitted from the light emitting unit 17 is not completely reflected by the reflecting unit 19 and immediately the top motor 3. Stop and return the transfer motor (5) to the original position from the transferred position.

The control unit 15 may control the operation and the transfer of the circular saw 11 by the start switch formed on its own, and the circular saw 11 by the foot switch 21 separately connected to the control unit 15. It is possible to control the operation and transfer of).

In addition, the frame 7 is provided with a foreign matter detection sensor 23 for detecting a foreign matter, such as a nail or a metal material, such as wood mounted on the worktable (1).

When the foreign matter detection sensor 23 detects the foreign matter, the controller 15 stops the rotation of the circular saw 11 immediately so as to prevent damage to the circular saw due to the foreign matter.

When the wood 7 is not placed on the workbench 1, the wood detecting sensor 25 for detecting the mounting of wood on the workbench so that the control unit 15 can block the operation of the circular saw 11 in advance. ) Is installed.

And the present invention is located at the top of the worktable (1) Vise member 27 for fixing the wood and the like to prevent the departure of the wood during the cutting work of wood;

An air cylinder 29 coupled to the vise member 27 for lowering the vise member 27 toward the work table when compressed air is supplied;

It is connected by the air cylinder 29 and the connecting pipe 31, and comprises a compressor 33 for supplying compressed air to the air cylinder 29 during the cutting operation of wood.

The compressor 33 is controlled by the control unit 15 when the wood is placed on the worktable 1 to supply the compressed air to the air cylinder 29, the air cylinder 29 receives the compressed air is a vise The member 27 is moved downward so as to stably fix the mounted wood. The air cylinder 29 may be installed at least one of the upper frames 35 coupled to the upper portion of the work table 1. Preferably, this is a preferable structure for more stably fixing the wood mounted on the worktable (1).

In the above, the vise member 27 is moved by the air cylinder 29. However, the present invention is not limited thereto.

In addition, the discharge pipe 37 for discharging sawdust formed during the cutting operation of the wood by the circular saw 11 is coupled to the saw channel 9 of the worktable 1,

The discharge pipe 37 has one or more injection nozzles for discharging the sawdust discharged to the discharge pipe 37 to the sawdust storage unit 39 provided at one end of the discharge pipe 37 by using the air supply pressure. N) is installed, the injection nozzle (N) is connected to the compressor (33) by a connecting pipe 41, respectively, and sprays compressed air supplied from the compressor (33) sawdust present in the discharge pipe (37) The discharged to the sawdust storage unit 39.

And the pinion gear 43 is coupled to the drive shaft 44 of the transfer motor 5, the rack gear 43 is a guide member 13 to transfer the circular saw 11 at the highest possible speed Provided along the rack gear 45 is coupled.

Accordingly, the chain saw for wood processing of the present invention can be operated automatically by controlling the control unit 15 and can also be operated manually by controlling the foot switch, the wood sensor 25 is placed on the work table (1) When the wood is detected, it is determined by the controller 15 as the operable state of the circular saw 11.

In this state, when the operator presses the start switch of the control unit 15 and then presses the foot switch 21, the compressor 33 is operated so that the air cylinder 29 is lowered to operate the vise member 27 on the work table 1. Press and fasten the wood mounted on the board.

And the saw motor (3) is driven to rotate the circular saw 11 at high speed to cut the wood and the transfer motor (5) is driven to the frame 7 by the pinion gear 43 and the rack gear 45 With the circular saw 11 is advanced by a certain length along the saw channel (9).

At this time, when the foreign object or the human body is close to the circular saw 11, the light emitting unit 17 and the reflecting unit 19 of the sensing means detects this and transmits the detected signal to the controller 15.

The control unit 15 generates a warning sound or emits a warning light so that an operator can recognize it from the outside, and immediately stops the operation of the saw motor 3 to stop the operation of the circular saw 11, a certain time elapsed After moving the feed motor (5) in the opposite direction to return the frame 7 and the circular saw 11 to its original position.

In addition, when the foreign matter detection sensor 23 detects foreign substances such as nails or metals on the wood during the cutting operation of the wood, the control unit 15 generates a warning sound or emits a warning light so that an operator can recognize it from the outside. Immediately stop the operation of the circular saw 11 by stopping the operation of the saw motor (3), and after a certain time passes the drive motor (5) in reverse to move the frame 7 and the circular saw 11 in its original position Return to

In addition, the compressed air supplied to the air cylinder 29 is discharged by the compressor 33, and the vice member 27 rises to the upper portion of the work table 1 and is spaced apart from wood.

In addition, the sawdust generated during the cutting operation of the wood is discharged to the discharge pipe 37, and then discharged toward the end of the discharge pipe 37 by compressed air sprayed from the injection nozzle (N) connected to the compressor 33 The sawdust storage unit 39 is to be stored.

As such, the present invention allows the circular saw to stop immediately when a foreign object or the human body of the worker approaches the circular saw during a cutting operation such as wood, and also prevents the circular saw from operating when the wooden is not placed on the workbench. Therefore, it is possible to prevent various safety accidents that may be caused by the operation of the circular saw before or during the cutting operation of wood, and to prevent damage to the circular saw in advance.

And because it can securely fix the wood, etc. placed on the workbench can prevent the safety accident due to the departure of the wood during the cutting work of wood,

In addition, it is possible to improve the workability because the forward and backward feed speed of the circular saw can be made as fast as possible, and the sawdust generated when cutting the wood with the circular saw can be discharged quickly, so the cutting work of the wood can be performed quickly. There is also an effect that can proceed.

Claims (5)

A frame movably coupled to the worktable and installed so that the top motor and the transfer motor can be transferred together; A circular saw installed on the frame to be rotated by the drive of the saw motor and forward and backward along the saw passage by the drive of the feed motor, for cutting wood and the like placed on the workbench; Sensing means for detecting at least one or more objects provided to the workbench or frame and when a circular saw is rotated by the driving of the saw motor, when a human body or a foreign object is close to the circular saw; Controlling the saw motor and feed motor so that the rotation of the circular saw can be stopped immediately by receiving the signal sensed by the sensing means and the feed motor can be reversed to immediately return the circular saw to its original position. It includes a control unit, the frame is provided with a wood sensor for detecting the wood mounted on the workbench and a foreign material detecting sensor for detecting the foreign matter present in the wood, respectively, the saw passage of the workbench by a circular saw The discharge pipe for discharging the sawdust formed during the cutting operation of wood is combined, the discharge pipe is installed with a spray nozzle for discharging the sawdust discharged to the discharge pipe to the sawdust storage provided at one end of the discharge pipe by the supply pressure of air This jet nozzle is a chain saw for wood processing connected to the compressor by a connector. According to claim 1, wherein the sensing means is provided on one side of the work table, and for emitting a light beam toward the circular saw periphery; It is installed in the frame, the chain saw for processing wood made of a reflector for reflecting the light emitted from the light emitting unit to detect the foreign matter or the human body, such as close proximity to the circular saw to be transmitted to the controller. Claim 3 was abandoned upon payment of a set-up fee. (delete) The vice member of claim 1, further comprising: a vise member positioned at an upper portion of the work table to fix the wood and the like to prevent the wood from being separated during the cutting operation of the wood; An air cylinder coupled to the vise member and configured to lower the vise member toward the work table when compressed air is supplied; A chain saw for wood processing comprising a compressor for supplying compressed air to the air cylinder when the wood cutting operation is connected by the air cylinder and the hose. Claim 5 was abandoned upon payment of a set-up fee. (delete)