KR102332988B1 - Drill bit and wood processing Apparatus having the same - Google Patents

Abstract

A drill bit according to the present invention comprises: a through-hole (BH) formed therein; and a protrusion part (BT) and a cutting part (BC) provided on an end of one side thereof, wherein the protrusion part (BT) of the drill bit protrudes to a predetermined height in the range of 60-120 degrees from a central axis of the drill bit, and the cutting part (BC) has a triangular shape inclined to both sides and has a cutting angle in the range of 5-30 degrees. According to the present invention, a wood processing device comprises: a base (100); a wood fixing part (200) installed on one side of the base; a processing part (300) installed on the other side of the base; and a control part (400) connected to the processing part. The processing part (300) includes: first, second, and third supports (311, 312, 313) installed at regular intervals; a sliding guide rod (320) installed between the first and second supports; an advancing/retreating guide rod (330) installed between the first and third supports; a body (340) which is coupled to the sliding guide rod and the advancing/retreating guide rod, and includes a rotation part (341), an advancing/retreating part (342), a bit fastening part (343), and an air drive part (344); and a damping part (350) installed on the first support. According to the present invention, sawdust generated during hole processing is quickly discharged by the inflow of air.

Description

A drill bit for processing a wood straw and a wood straw processing apparatus having the same {Drill bit and wood processing Apparatus having the same}

The present invention relates to a wood straw processing apparatus, and more particularly, to a wood straw processing apparatus which can be produced by replacing the material of the straw made of plastic with wood.

Recently, the use of disposable products is increasing due to ease of use. Disposable items are mostly products such as spoons, forks, plates, cups, straws, cotton swabs, and toothpicks, which are made of plastic material.

Single-use plastic products are recyclable, but do not decompose for a long period of time when disposed of with general waste. Moreover, plastic products are sourced from microplastics, which can accumulate in the body of the final predator in an ecological pyramid structure.

For this reason, most countries, including the United States, Canada, the United Kingdom, and Spain, are promoting legislation to reduce or ban the use of disposable products, and are expanding regulations to reduce the use of disposable products in Korea.

On the other hand, personal hygiene is an advantage of using disposable products. Therefore, it can be practically difficult to completely ban the use of single-use products.

Laid-open Patent Publication No. 10-2015-0032090, Reverse circulation drill bit for ground excavation and method of using the same Registered Patent Publication No. 10-0650314, Screw-type drill bit for opening the outlet of the furnace Public Utility Model Publication No. 20-1995-0052467, Wood processing drill Laid-open Patent Publication No. 10-2012-0011517, a drill member and an improved wood for forming a curved surface processed with a drill member

The present invention has been devised to solve the above problems, and an object of the present invention is to provide a straw processing apparatus using wood that does not cause environmental pollution.

Another object of the present invention is to provide a wood straw processing apparatus capable of forming a hole having a relatively small diameter in the wood.

Another object of the present invention is to provide a wood straw processing apparatus capable of forming a hole without bending in wood.

The problems to be solved by the present invention are not limited to the aforementioned problems. Other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention pertains from the following description.

The drill bit according to the present invention has a through hole (BH) formed therein, a protrusion (BT) and a cutting portion (BC) are provided at one end, and the protrusion (BT) of the drill bit is in the cross section of the drill bit, the center It has a range of 60 degrees to 120 degrees with respect to the axis and protrudes to a predetermined height, and the cutting part BC has a triangular shape inclined on both sides, and is inclined in a range of 5 degrees to 30 degrees from the tip of the triangle to both sides. has a cutting angle.

In addition, the drill bit may have a length of at least 250 mm or more and an outer diameter of 4 to 6 mm.

Wood processing apparatus according to the present invention includes a base 100, a wood fixing part 200 installed on one side of the base, a processing part 300 installed on the other side of the base, and a control unit connected to the processing part 400, and the processing unit 300 includes first, second, and third supports 311, 312, and 313 installed to be spaced apart from each other by a predetermined distance, and a sliding guide installed between the first and second supports. The rod 320, the advancing and retreating guide rod 330 installed between the first and third supports, coupled to the sliding guide rod and the advancing and retreating guide rod, the rotating part 341, the advancing and retreating part 342, the bit fastening part 343, a body 340 including an air driving unit 344, and a damping unit 350 installed on the first support,

The first and second supports are installed to have a predetermined separation distance, have the same height, and the third support is installed between the first support and the second support, and has a lower height than the first and second support A sliding guide rod is installed between the first support and the second support, a forward and backward guide rod is installed between the first support and the third support, and a drill bit DBIT is fastened to the bit fastening part 343 . .

According to the present invention, a through hole is formed in the longitudinal direction inside the drill bit, and air is introduced into the through hole of the formed drill bit during hole processing. According to this configuration, it is possible to quickly discharge sawdust generated during hole processing by the inflowing air.

1 is a perspective view of a wooden straw processing apparatus according to a first embodiment of the present invention.
Figure 2 is a side view of the wooden straw processing apparatus according to the first embodiment of the present invention.
Figure 3 shows the operating range of the body according to the present invention.
Figure 4 shows a drill bit according to an embodiment of the present invention.
Figure 5 shows a wooden straw processing apparatus according to a second embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. For convenience of description, components shown in the drawings may be exaggerated, omitted, or schematically represented.

The present invention relates to a straw processing apparatus that can be produced by replacing the material of the straw made of plastic with wood.

1 is a perspective view of a wooden straw processing apparatus according to a first embodiment of the present invention, Figure 2 is a side view of a wooden straw processing apparatus according to a first embodiment of the present invention.

A wooden straw processing apparatus according to a first embodiment of the present invention includes a base 100 and a wood fixing part 200 installed on one side of the base, a processing part 300 installed on the other side of the base, and the processing and a control unit 400 connected to the unit.

The wood fixing part 200 is installed on one side of the base 100 . The wood fixing unit 200 includes a fixing table 210 and a clamp 220 . A wood to be processed is placed on the upper portion of the fixing table 210 . The wood may have a rectangular plate shape or a circular column shape. The clamp 220 prevents the flow of wood placed on the top of the fixture.

The processing unit 300 includes first, second, and third supports 311, 312, 313 installed to be spaced apart from each other by a predetermined distance, a sliding guide rod 320 installed between the first and second supports, and the first And the advancing and retreating guide rod 330 installed between the third support, coupled to the sliding guide rod and the advancing and retreating guide rod, the rotating part 341, the advancing and retreating part 342, the bit fastening part 343, the air driving part (344) A body 340 comprising a, and a damping unit 350 installed on the first support.

The first and second supports have the same height and have a predetermined separation distance. The third support is installed between the first support and the second support, and has a lower height than the first and second support.

Referring to the drawings, a sliding guide rod is installed between the first support and the second support, and a forward and backward guide rod is installed between the first support and the third support. The advancing and retreating guide rod may be formed with a helical protrusion on the surface. According to the present invention, the sliding guide rod 320 and the advancing and retreating guide rod 330 are fastened to the body 340 . The body may move forward or backward along the spiral projection of the advancing and retreating guide rod.

On the other hand, the body reciprocates between the first support and the third support, the distance between the first support and the third support is the same as the operation distance of the drill bit DBIT to be described later. Therefore, the first and third supports perform a function of a stopper for limiting the movement of the body.

The body 340 includes a frame FRM, a rotating part 341 installed on the frame, a forward and backward part 342 , a bit fastening part 343 , and an air driving part 344 . A bearing is installed on the frame of the body, and a sliding guide rod is coupled to the bearing. In the present invention, it is an embodiment that the sliding guide rod is configured as a pair of left and right. The sliding guide rod supports the body.

The rotating part 341 may be composed of a motor and a pulley. The motor may rotate forward or reverse according to a signal from the controller 400 .

The advancing and retreating part 342 drives the body forward and backward. The advancing and retreating part receives the rotational force of the rotating part, and drives the body forward and backward along the forward and backward guide rods according to the rotational force. The advance and retreat portion may include a speed reducer.

The bit fastening part 343 is provided with a drill chuck. The drill chuck rotates the drill bit fastened to the drill chuck by receiving the rotational force of the rotating part. Additionally, an air driving unit 334 is installed in the bit fastening unit 343 . The drill bit according to the present invention is formed with a through hole in the longitudinal direction, the air driving unit 334 supplies or discharges air to the through hole of the drill bit.

The air driving unit 334 blows air through the hole of the drill bit or sucks air. The air cools the drill bit and helps to discharge sawdust generated during wood processing.

On the other hand, the rotating part 341, the advancing and retreating part 342, the bit fastening part 343 is respectively installed with a pulley, the belt is coupled to the pulley. Specifically, a first pulley may be installed between the rotating part and the bit fastening part, and a second pulley may be installed between the bit fastening part and the forward and backward part. Accordingly, the rotational force generated from the rotating part is transmitted to the forward and backward parts and the bit fastening part. When the motor of the rotating part rotates forward, the drill bit rotates forward and the forward and backward parts advance at the same time, and when the motor of the rotation part rotates in reverse, the drill bit rotates backward and the forward and backward parts move backward at the same time.

Figure 3 shows the operating range of the body according to the present invention.

Referring to the drawings, the body 340 reciprocates between the first support and the second support. Accordingly, the drill bit mounted on the body has a predetermined punching distance DA. For the perforation, the body moves from the third support to the first support, and then returns from the first support to the third support.

In order to accurately stop the body, a first sensor and a third sensor capable of detecting the body may be attached to the other side of the first support and one side of the third support, respectively. The first and third sensors may be configured as position detection sensors.

The first sensor S1 may be installed on the other side of the first support, and the third sensor S3 may be installed on one side of the third support. When the first sensor detects the body, the control unit 400 may control to reverse the motor to move backward, and when the third sensor detects the body, control the motor to stop.

The drill bit DBIT fastened to the bit fastening part 343 has a long length. The end of the long length drill bit can flow according to the load. In order to prevent this, the first support may further include a damping unit 350 coupled to the drill bit. The damping unit 350 may be configured as a bearing.

As another embodiment, a vibration sensor may be installed in the damping unit 350 . The vibration sensor detects vibration of the drill bit. The vibration signal detected from the vibration sensor is output to the control unit, and the control unit may output a control signal to stop or reverse the forward movement of the body when the current signal output from the vibration sensor is equal to or greater than a predetermined reference value.

The control unit 400 according to the present invention controls the driving of the rotating unit 341 and the air driving unit 344 of the body 340 described above.

Figure 4 shows a drill bit according to an embodiment of the present invention.

Generally, straws have a length of approximately 20-25 cm and an outer diameter of 4-6 mm. It is necessary to use a drill bit to form a hole in the wood. Since the existing commercialized drill bit has a relatively short length, it may be difficult to drill wood with the existing drill bit.

When using a drill bit having an outer diameter of 4 to 6 mm, it is possible to form a hole of a short depth, but when a hole of a relatively long depth is formed, the diameter of the hole is caused by sawdust generated during machining and the shaking of the drill bit. This can be enlarged or curved. Therefore, the smooth discharge of sawdust during machining is an important factor in determining the quality of the hole.

The drill bit according to the present invention has a length of at least 250 mm and an outer diameter of 4 to 6 mm. The drill bit has a through hole (BH) formed therein, and a protrusion (BT) and a cutting portion (BC) are provided at the end thereof. The protrusion (BT) may have a range of 60 degrees to 120 degrees with respect to the central axis in the cross section of the drill bit and protrude to a predetermined height in the longitudinal direction of the drill bit. The cutting portion BC has a triangular shape inclined in both directions, and has a cutting angle inclined to both sides from the tip of the upper angle shape. The cutting angle may have a range of 5 degrees to 30 degrees. The cutting portion BC has a triangular shape inclined to both sides. By configuring the cutting portion in the triangular shape, it is possible to provide sufficient cutting force in both forward rotation and reverse rotation.

On the other hand, sawdust of the wood cut by the cutting unit is discharged through the through hole. The discharge of such sawdust may be made by supplying air, and a pipe for supplying air may be installed in the through hole.

Referring back to FIG. 2 , a damping unit 450 is installed on the first support 311 . The damping unit 450 suppresses vibration of the drill bit during wood processing. The other end of the drill bit DBIT is fastened to the bit fastening part 343, and the middle part of the drill bit is fitted to the damping part. The damping part 450 may be configured as a bearing. A drill bit having a long length may generate vibration when the cutting part BC formed at one end is punched in the wood. Such vibration may affect the quality of the perforation. By installing the damping part in the middle area of the drill bit, it is possible to provide sufficient anti-vibration force and improve the quality of the drilling.

Figure 5 shows a wooden straw processing apparatus according to a second embodiment of the present invention.

The wooden straw processing apparatus according to the second embodiment of the present invention, compared with the wooden straw processing apparatus according to the first embodiment described above, further includes a forward and backward driving unit 345 instead of the forward and backward portion of the first embodiment. The forward and backward rotation unit may include a motor and a reducer.

As such, by separately installing the driving source of the forward and backward driving unit, it is possible to reduce the time for temporarily stopping the motor of the rotating unit when it is converted from forward rotation to reverse rotation or from reverse rotation to forward rotation.

Hereinafter, forming a straw hole in wood using a wood straw processing apparatus according to the present invention will be described. The processing of such a hole may be performed according to a control signal of the controller 400 .

As the drill bit rotates and advances, a hole is formed in the wood. Sawdust is generated during the machining of the hole, and since the sawdust affects the quality of the groove, it must be discharged quickly.

According to the present invention, air is supplied through a through hole formed in the drill bit. At this time, the introduced air is discharged to the other end after dispersing the sawdust. As such, by discharging sawdust generated during hole processing quickly through the through hole of the drill bit, the processing quality of the hole can be improved.

According to the present invention, a through hole is formed in the longitudinal direction inside the drill bit, and air is supplied to the through hole of the formed drill bit during hole processing. According to this configuration, it is possible to quickly discharge sawdust generated during hole processing by the supplied air.

As mentioned above, although the present invention has been described in detail through specific embodiments, the present invention is not limited to the above embodiments, and various modifications are possible by those of ordinary skill within the scope of the technical spirit of the present invention.

100: base
200: fixed part
210: fixture
220: clamp
300: processing unit
311~313: 1st~3rd support
320: sliding guide rod
330: advance and retreat guide rod
340: body
341: rotating part
342 : Retreat
343: bit fastening part
344: air drive unit
350: damping part
400: control unit
DBIT : Drill bit

Claims (3)

A base 100, a wood fixing part 200 installed on one side of the base, a processing part 300 installed on the other side of the base, and a control part 400 connected to the processing part, and ,
The processing unit 300 includes first, second, and third supports 311, 312, and 313 installed to be spaced apart from each other by a predetermined distance, and a sliding guide rod 320 installed between the first and second supports, and the first And the advancing and retreating guide rod 330 installed between the third support, coupled to the sliding guide rod and the advancing and retreating guide rod, the rotating part 341, the advancing and retreating part 342, the bit fastening part 343, the air driving part (344) A body 340 comprising a, and a damping unit 350 installed on the first support,
The first and second supports are installed to have a predetermined separation distance, have the same height as each other,
The third support is installed between the first support and the second support, and has a lower height than the first and second supports,
A sliding guide rod is installed between the first support and the second support, and a forward and backward guide rod is installed between the first support and the third support,
A drill bit (DBIT) is fastened to the bit fastening part 343,
The drill bit DBIT has a through hole BH formed therein, and a protrusion BT and a cutting portion BC are provided at one end, and the protrusion BT of the drill bit is the center of the cross section of the drill bit. It has a range of 60 degrees to 120 degrees with respect to the axis, protrudes to a predetermined height in the longitudinal direction of the drill bit, and the cutting part BC has a triangular shape inclined on both sides, and a cutting angle inclined on both sides from the tip of the triangle shape. Wood processing apparatus, characterized in that having a.
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