KR20160125212A

KR20160125212A - A Multi Band Sawing Machine

Info

Publication number: KR20160125212A
Application number: KR1020150056102A
Authority: KR
Inventors: 조자연
Original assignee: 조자연
Priority date: 2015-04-21
Filing date: 2015-04-21
Publication date: 2016-10-31
Also published as: KR101775214B1

Abstract

The present invention relates to a multi-band sawing machine for cutting a workpiece such as a wood or a frozen meat at a plurality of positions by only one feeding.
The multiband sawing machine of the present invention has a plurality of band saws 200 formed with blades in a direction opposite to the traveling direction P of the workpiece W in the cutting area X, wherein the plurality of band saws 210, 220, Are arranged so as not to overlap each other with respect to the traveling direction of the workpiece in the cutting area X but also with respect to the width direction perpendicular to the traveling direction and the plurality of band saws are to be cut in the cutting area X And are spaced apart in the width direction by the thickness of the workpiece.
The present invention further provides a push assembly 600 disposed between a plurality of band saws adjacent in the width direction and having a plurality of push bars 610 extending along the traveling direction of the work.

Description

{Multi Band Sawing Machine}

The present invention relates to a multi-band sawing machine that cuts a workpiece at several places with only one feed.

When cutting a frozen meat, a person cuts the frozen meat directly with a saw, or a method of cutting a frozen meat into a machine and cutting it has been used.

Conventionally, almost all kinds of frozen meat cutting machines use a band saw to cut frozen meat. In the case of the frozen meat, when the disk saw blade is used, the friction between the frozen meat and the disk portion of the disk saw blade is excessively increased, and heat is generated, so that the surface of the frozen meat melts to change the color or deteriorate taste. Accordingly, a method of cutting a frozen dough with a band saw that minimizes friction with the frozen dough during the cutting process has been applied. The band saw has a thickness of about 0.6 mm and a width of about 15 mm.

However, most of these band saw machines for cutting frozen meat were composed of only one band saw. Therefore, when cutting the frozen meat, it is common to cut the frozen meat to a desired thickness by performing the operation of performing one cutting at a time several times.

It is very difficult to arrange a plurality of band saws in parallel because the structure for feeding the band saw is very complicated and it is very difficult to arrange a plurality of band saws It was a very difficult task to implement the device so that all of the band saws would operate under the same transfer conditions.

Therefore, a fracture period as shown in Patent Publication No. 1189726 has been developed, but this structure has failed to operate properly. In the form of reversing the band saw, the twist (torsion) is repeated repeatedly as the saw is transported to the infinite track, causing fatigue breakdown, and it is very difficult to uniformly transport the plurality of band saws. There is a problem in that the metal wears to the frozen dough which is the food.

Patent No. 1189726

SUMMARY OF THE INVENTION It is an object of the present invention to provide a multi-band sawing machine capable of constituting the same feeding environment for all band saws even when a plurality of band saws are arranged side by side.

Another object of the present invention is to provide a multi-band sawing machine capable of stopping operation immediately when a malfunction or an abnormality of the apparatus occurs.

Another object of the present invention is to provide a multi-band sawing machine capable of simultaneously cutting several portions at once.

In order to achieve the above object, the present invention is characterized in that a plurality of band saws (200) formed with a blade in a direction opposite to a traveling direction (P) of a workpiece (W) in a cutting area (X) The band saws 210, 220 and 230 are arranged so as not to overlap each other with respect to the advancing direction of the workpiece in the cutting area X but also with respect to the width direction perpendicular to the advancing direction, In which the workpiece to be cut is spaced apart in the width direction by the thickness of the workpiece to be cut.

The plurality of band saws are respectively wound on a plurality of driven pulleys 310b, 320b, and 330b disposed on the entry side of the band saw with respect to the cutting area X and disposed on the advancing side of the band saw with respect to the cutting area X The plurality of band saws are respectively wound on the plurality of driven pulleys 310a, 320a, and 330a.

The driven pulleys are rotatably installed independently of each other.

A plurality of driven pulleys 310b, 320b, and 330b disposed on the entry side of the band saw with respect to the cutting area X and a plurality of driven pulleys 310a, 320a, and 330a disposed on the advancing side, 340b, and 340a, and the diameter of the plurality of driven pulleys that are installed on the same slave shaft are different from each other.

the difference in diameter between the driven pulleys 310a, 320a, and 330a axially extended on the a-axis coaxial shaft 340a and the difference in diameter between the driven pulleys 310b, 320b, and 330b axially extended on the b- .

The plurality of band saws 210, 220 and 230 are wound on a plurality of idler pulleys 410, 420 and 430, respectively, and the diameter of the driven pulley and the idler pulley wound on the same band saw are complementary to each other.

The plurality of band saws are wound around a drive pulley 130 having the same diameter so that the band saws wound on the drive pulley 130 move at the same linear velocity as the drive pulley 130 rotates.

The plurality of band saws 210, 220, and 230 are respectively wound on a plurality of tensioner pulleys 510, 520, and 530 that tension each independently.

The plurality of tensioner pulleys 510, 520 and 530 are respectively installed on the tensioner pulley moving shafts 511, 521 and 531 moving independently of each other. The plurality of tensioner pulley moving shafts 511, 521 and 531 are tensioner loosened and rotatably mounted on the tensioner shaft 540, Pulley arm plates 513, 523, and 533, respectively.

Tensioner pulley tension springs 516, 526, 536 are attached to the tensioner pulley arm plates 513, 523, 533, respectively, and the elastic force of the tensioner pulley tension springs is adjusted by the tensioner pulley tension adjusters 515,

The tensioner pulley arm plates 513, 523, and 533 are provided with tensioner pulley displacement adjusting units 514, 524, and 534 for adjusting displacements of the tensioner pulleys 510, 520 and 530, respectively.

Further comprising a sensing unit (560) that senses that a tensioner pulley wound around the band saw when the at least one of the plurality of band saws is cut off is detected, and when a detection of the tensioner pulley from the sensing unit (560) And a power cut-off device for shutting off the power.

Two multi-band sawing machines are symmetrically disposed about the cutting area X to expand the width of the cutting area.

The two multi-band sowing machines receive power from one driving unit 110 and have the same driving speeds delivered to the two multi-band sowing machines.

And a push assembly 600 disposed between the plurality of band saws adjacent in the width direction and having a plurality of push bars 610 extending along the traveling direction of the workpiece.

The push assembly 600 is fixed to a plurality of push bars 610 disposed parallel to each other by a coupling hole 630 through a coupling block 620 and providing a coupling force in the width direction.

The length of the engaging block 620 fixed to the push assembly 600 in the advancing direction P is determined by the position of a plurality of band saws 210,220 and 230 which do not overlap each other with respect to the traveling direction of the workpiece in the cutting area X, .

The joining block 620 may have a predetermined width and may interpose one or more of the joining blocks between two adjacent push bars.

According to the present invention, a plurality of band saws to be transported under the same transporting conditions are provided side by side, and the transporting conditions for each band saw can be sufficiently controlled, so that the reliability of the quality is very high.

In addition, according to the present invention, the band saws are arranged in a stepwise manner at a plurality of stages, and at the same time, the cutting operation is sequentially and continuously performed without cutting at all the cutting portions, so that a plurality of cutting operations can be performed at once without giving a great deal of burden to the equipment.

Further, according to the present invention, a plurality of band saws can be realized by a simple structure and a minimal configuration, and the conveying conditions of all the band saws can nevertheless be made uniform.

In addition, according to the present invention, it is possible to immediately detect an abnormality in the equipment and stop the operation.

The above and other objects, features and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

1 is a front view of a multi-band sawing machine according to the present invention;
FIG. 2 is a view showing the AA portion of FIG. 1,
FIG. 3 is a view showing the BB portion of FIG. 1,
Figure 4 shows the CC part of Figure 1,
FIG. 5 is an enlarged view of the vicinity of the area D in FIG. 1,
Figure 6 shows one tensioner pulley and associated configuration,
FIG. 7 is a partial exploded view of FIG. 6,
8 is a view showing a state of coupling and position adjustment of each part in Fig. 7, and Fig.
9 is a view showing a surface on which a workpiece W is cut by a multi-band sawing machine according to the present invention.

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

It is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to inform.

Fig. 1 is a front view of a multi-band sawing machine according to the present invention, Fig. 2 is a view showing the AA portion of Fig. 1, Fig. 3 is a view showing the BB portion of Fig. FIG.

[Arrangement of band saw in cutting area]

In FIG. 1, only one multi-band sawing machine is shown. In constructing an actual device, two multi-band sawing machines may be arranged to face each other around the cutting area X to extend the cutting area. The details are shown in Fig. That is, the three band saws 210, 220 and 230 located on the left side L of the band saws shown in FIG. 3 are band saws wound around a multi-band sawing machine (a portion omitted in FIG. 1) disposed on the left side of the apparatus, The three band saws 210, 220, and 230 located are band saws wound on a multi-band sawing machine (a portion shown in FIG. 1) disposed on the right side of the apparatus.

The multiband sawing machine according to the present invention includes a plurality of band saws 200 and a cutting edge of these band saws 200 is cut in a cutting area (X portion in FIG. 1) In the direction opposite to the traveling direction of the vehicle. The band saws 210, 220 and 230 (see the right R portion in FIG. 3) wound on one multi-band sawing machine are arranged so as not to overlap with each other with respect to the traveling direction of the workpiece, It does not. For example, as such a structure, a plurality of band saws can be arranged stepwise as shown in Fig.

The plurality of band saws are spaced apart in the width direction by the thickness of the workpiece to be cut in the cutting area X. This spacing corresponds to the interval of the cut surfaces shown in Fig. 9, which shows the surface on which the workpiece W is cut by the multi-band sawing machine according to the present invention.

Referring to FIG. 1, there is provided a structure for minimizing the displacement of the band saw which is deformed by receiving the processing resistance due to the contact of the band saw with the workpiece. The first guide roller Y and a second guide roller Z are provided.

[Structure of push assembly]

When the workpiece W moves in the advancing direction P with respect to the arrangement of the band saws, the band saws 220 start to cut the workpiece W from the band saw 230 closest to the workpiece W 210 cut the workpiece W in order. At this time, the portion of the workpiece W that has been cut first may not yet be cut off and may not be separated from the workpiece portion to be transported. In order to prevent this, the present invention includes a push assembly 600 for pushing the workpiece W to the end. The push assembly 600 has a shape similar to a browning comb as shown in Fig. The plurality of push bars 610 constituting the push assembly 600 are spaced apart from each other and arranged side by side so that the push bars 610 respectively enter between adjacent band saws continuously pushing and transporting the work W .

A push assembly 600 can be constructed by interposing the engagement blocks 620 between the push bars 610 and connecting the push bars 610 in the width direction using a coupling hole 630 such as a bolt or a nut as shown in FIG. have. The width of the coupling block is set such that each push bar 610 in the engaged state of the push assembly 600 can be moved between the band saws without interfering with the band saws.

When the push assembly is constructed by alternately stacking a plurality of push bars and engagement blocks as described above, it is necessary to release and replace the above-described engagement hole 630 when some of the push bars of the plurality of push bars are broken due to contact with the band saw It is possible to replace only the push bar, thereby facilitating maintenance and reducing the cost.

Next, as shown in FIG. 3, the length of the coupling block 620 interposed between the push bars 610 in the advancing direction P is formed corresponding to the arrangement of the band saws arranged along the proceeding direction. That is, when the push assembly 600 pushes the workpiece W and feeds the workpiece W to the end, the engaging block 620 is preferably positioned as close as possible to the band saw without touching the band saw. This is related to the bending strength of the push bar 610. The length of the push bar 610 protruding in the advancing direction P can be reduced as compared with the case where all of the engaging blocks 620 are formed as short as possible, The bending resistance of the bar can be increased.

Although not shown in the drawings, the distance between the two push bars can be flexibly adjusted by providing a plurality of the plurality of joint blocks 620 and interposing a plurality of these joint blocks between two neighboring push bars 610. For example, when five bonding blocks 620 having a thickness of 2 mm are stacked and interposed between two push bars, the distance between the two push bars can be adjusted to 10 mm.

[Transport structure of band saw - driven pulley]

Referring to FIG. 1, the multi-band sawing machine of the present invention includes a plurality of pulleys for transporting a plurality of band saws 210, 220 and 230.

A plurality of b-driven pulleys 300b arranged on a portion of the band saw which enters the cutting area X and a plurality of a-driven pulleys 300a arranged on a portion of the band saw deviating from the cutting area X, Respectively. In order to realize the arrangement of the band saw as shown in Fig. 3, in one embodiment of the present invention, as shown in Figs. 1, 2 and 4, a plurality of b-driven pulleys 300b and a plurality of a- 300a are fitted to the same driven shafts 340b, 340a, respectively.

Here, the driven pulleys fitted to the same slave shaft have different diameters. The first and second driven pulleys 310a and 320a and the third driven pulley 330a have diameters different from each other and are connected to the first b driven pulley 310b and the second b driven pulley 320b, (330b) are different from each other.

It is also possible to configure the driven pulley with the same band saw to have the same diameter. The diameter of the first driven pulley 310a and the diameter of the first driven pulley 310b that are wound around the first band saw 210 are equal to each other and the diameters of the second driven pulley 320a and the second driven pulley 320b, The diameter of the driven pulley 320b is equal to that of the third driven pulley 330b and the diameters of the third driven pulley 330a and the driven third driven pulley 330b are the same.

However, the diameter of the driven pulley in which the same band saw is wound does not necessarily have to be the same. The first and second driven pulleys 310a and 320b have diameters of 300 mm, 260 mm and 220 mm respectively and the first and second driven pulleys 310a and 320b, When the diameter of the third driven pulley 330b is 280 mm, 240 mm, and 200 mm, respectively, the a-th coaxial shaft 340a is positioned at a position shifted 10 mm to the right of the b-type coaxial shaft 340b There is no problem in placing the band saw in the form shown in Fig. 3 at all. That is, the difference in diameter between the driven pulleys 310a, 320a, and 330a axially extended on the a-axis coaxial shaft 340a and the difference in diameter between the driven pulleys 310b, 320b, and 330b axially extended on the b- It is enough to do. The difference in diameter is configured to coincide with the interval of the workpiece W to be cut. Of course, it is evident that if the same band saw pulley is constructed to have the same diameter, the number of pulleys of the driven pulley can be reduced, which makes maintenance of the equipment more convenient.

However, when a plurality of driven pulleys are laid on one slave shaft, if the slave shaft and the driven pulley rotate integrally, a difference occurs in the linear velocity of the outer peripheral surfaces of the respective driven pulleys having different diameters. This is directly reflected in the linear velocity of the band saw that is wound around the outer peripheral surface of the driven pulley. When the workpieces W are cut into a plurality of workpieces W, the cutting speeds of the band saws applied to the cutting surfaces are different from each other, which may cause a difference in the cutting surface of the workpieces. Therefore, in the present invention, a driven pulley is rotatably provided to the driven shaft. Even if the slave coaxial axes are fixed, the rotational angular velocity of each of the driven pulleys can be configured differently when a plurality of driven pulleys provided therein are rotatably provided individually, Can be the same.

Therefore, even if all of the band saws are transported at the same linear velocity in the driving system 100 that provides the driving force for transporting the band saw, if the respective driven pulleys are rotatably provided to the driven shafts as described above, The band saw can be fed at the same linear velocity even in the deployed state.

[Drive structure of band saw-drive pulley]

As described above, in order to transfer a plurality of band saws at the same linear velocity, a plurality of band saws are wound on the drive pulley 130 having the same diameter in the present invention. The driving pulley 130 may be configured as one rotating body in which a plurality of band saws are wound together as shown in FIG. Accordingly, when the driving pulley 130 is rotated, the plurality of band saws wound on the driving pulley 130 rotate at the same linear velocity.

On the other hand, when two multi-band sawing machines are provided on both sides of the cutting area as described above, it is necessary that the line speeds are the same between the band saws provided in the two multi-band sawing machines. In the present invention, as shown in FIG. 2, driving force is transmitted from one driving unit 110 to two multi-band sowing machines. For example, the rotational force of the motor, which is the driving unit 110, is transmitted to each driving shaft 140 through the belt, which is the power transmitting unit 120. At this time, the power transmitting unit 120 ), The line speeds of the band saws of the two multi-band sawing machines can be made the same.

At this time, even if the rotational speeds transmitted to the two multi-band sawing machines are the same, the rotational directions thereof need to be opposite to each other as needed. 2, since the two multi-band sawing machines are symmetrical to each other, if the rotational directions of the driving forces transmitted to the two multi-band sawing machines are opposite to each other, the feed of all the band saws in the cutting area X Direction can be configured to be the same. For this, in the present invention, though not directly shown in FIG. 2, the rotation directions of power transmitted to the multi-band sowing machines on both sides can be reversed through a gear box or the like.

It may appear that the rated capacity should be very high since a plurality of band saws must be operated simultaneously by one driving unit 110. However, in the structure of the present invention, a plurality of band saws do not cut the workpiece at the same time, As shown in the figure, since the two band saws sequentially process the workpiece as the workpiece advances, the actual workpiece is cut and the resistance generated is not large. Therefore, even if the drive section has a low rated capacity, it is possible to cut a plurality of cuttings as shown in FIG. 9 only by operating the workpiece once.

[Idler pulley]

In the present invention, an idler pulley 400 may be further provided if necessary.

In particular, the idler pulleys can be installed to make all the lengths of the plurality of band saws the same.

1 and 4, the plurality of idler pulleys 400 may be configured to have a diameter that is complementary to that of the driven pulley. The first idler pulley 410b, the second idler pulley 320b and the third idler pulley 330b have a smaller diameter than the first idler pulley 310b, the second ider pulley 320b and the third idler pulley 330b, 420 and the third idler pulley 430 in this order.

Since the idler pulleys 410, 420 and 430 have different diameters, the idler pulleys 410, 420 and 430 are rotatably mounted on the idler pulley shaft 440 in the same manner as the idler pulley mounting structure, So that the linear speeds of the outer peripheral surfaces of the idler pulleys of the idler pulleys can be equal to each other.

By providing an idler pulley at an appropriate position to adjust the contact angle of the band saw to be wound on the pulley, and by providing an idler pulley having a diameter complementary to the follower pulley according to the present invention, the length of the plurality of band saws 210, Can be similarly configured. If the lengths of the plurality of band saws used in the cutting apparatus are the same, the maintenance can be simplified and the number of parts can be reduced and the apparatus can be constructed more simply.

[Tensioner pulley]

In the present invention, the driven pulleys having different diameters or the band saws wound on the idler pulleys have the same tension so that the power of the drive system is prevented from being concentrated on any one band saw having a large tension, so that all band saws transmit uniform power So as to be transferred.

Fig. 5 is an enlarged view of the vicinity of the area D of Fig. 1, Fig. 6 is a view showing one tensioner pulley and its associated structure, Fig. 7 is a partial exploded view of Fig. And FIG.

As shown in FIG. 5, the tensioner pulley 500 consists of individual tensioner pulleys 510, 520, 530 to press each band saw 210, 220, 230, respectively. Each of the tensioner pulleys 510, 520 and 530 is installed at the other end of the tensioner pulley arm plates 513, 523 and 533, one end of which is tensioner-pulled and pivotally coupled to the fixed shaft 540. The tensioner pulleys 510, 520, and 530 are rotatably installed on the tensioner pulley arm plate. A plurality of tensioner pulley arm plates 513, 523 and 533 are installed on the right shaft 540 and tensioner pulleys 510, 520 and 530 are installed on the tensioner pulley arm plates 513, 523 and 533, respectively.

The tensioner pulleys 510, 520 and 530 shown in FIG. 5 are formed in a shape corresponding to the distribution of the diameters of the plurality of idler pulleys (that is, in a form complementary to the distribution of the diameters of the plurality of driven pulleys) 521, 531 themselves are movable, it is not always necessary to comply with the distribution of the diameters of the plurality of idler pulleys or to complementarily distribute the diameters of the plurality of driven pulleys. The diameter of the tensioner pulley 500 is set to a value suitable for applying tension to the band saw to be wound according to the dimensions of the tension support block 550, the displacement adjusting portions 514, 524, 534 and the tension adjusters 515, Diameter.

6, the tensioner pulleys 510, 520, and 530 are attached to the end portions of the tensioner pulley arm plates 513, 523, and 533, which rotate with the tensioner pulley 540 as the center of rotation, as shown in FIG. And is rotatably installed around the shafts 511, 521, and 531. The tensioner pulley arm plates 513, 523, and 533 are provided with tensioner pulley displacement adjusting portions 514, 524, 534 and tensioner pulley tension adjusting portions 515, 525, 535 as portions for adjusting the tension of the band saw.

The tensioner pulley displacement adjusting portions 514, 524, and 534 are formed in a block shape, and have holes formed therein with small diameter portions and large diameter portions as shown in FIG. 7 (b). The tensioner pulley tension adjusters 515, 525, and 535 have a long bolt shape. The tensioner pulley tension springs 516, 526, and 536 are inserted into the tensioner pulley displacement adjusting portion through the small diameter portion with the tensioner pulley tension springs 516, The tensioner pulley tension springs 516, 526, and 536 are supported by the head portion of the tensioner pulley tension adjuster and the surface of the tensioner pulley displacement adjuster, respectively, and elastically compressed.

The diameter of the tension adjuster is smaller than the diameter of the small diameter part. Therefore, the tension adjuster is slidable in the longitudinal direction with respect to the displacement adjusting portion. The diameter of the nut is smaller than the diameter of the large diameter portion and larger than the diameter of the small diameter portion. Therefore, the nut is also slidable in the large neck. As a result, according to this structure, the tension adjuster is slidable in the longitudinal direction of the large diameter portion.

By adjusting the fastening position of the nut with respect to the tension adjusting member, it is possible to adjust the degree of compression of the tensioner pulley tension springs 516, 526 and 536 extensively inserted into the tension adjusting member. The tensioner pulley tension springs 516, 526, and 536 can be made larger as the degree of compression is increased. It is preferable that such a nut is fixed by tightening the two nuts opposite to each other to prevent the nut from being released from the tension adjuster by the vibration.

8 (a) and 8 (b), the tensioner pulley displacement adjusting parts 514, 524, 534 and the tensioner pulley arm plates 513, 523, 533 are adjustably positioned through a plurality of fastening holes formed at regular intervals . The tensioner pulley tension adjusters 515, 525, and 535 adjust the coupling positions of the screws with respect to the tensioner pulley tension adjusters 515, 525, and 535 as shown in FIGS. 8A and 8C Similarly, the length can be set so that the length of the pre-pressing of the spring can be adjusted.

8 (b), the tensioner pulley tension adjusters 515, 525, 535 are not changed but the tensioner pulley displacement adjusting portions 514, 524, 534 are stretched so that the elasticity pressure against the band saw is maintained, The displacement from block 550 is increased. 8 (c), the tensioner pulley displacement adjusting parts 514, 524 and 534 are maintained as they are, and the tensioner pulley tension adjusting parts 515, 525 and 535 are extended to reduce the elasticity pressure on the band saw, (550). 8 (b), the tensioner pulley displacement adjusting portions 514, 524, 534 are reduced and the tensioner pulley tension adjusting portions 515, 525, 535 are increased to reduce the elasticity pressure on the band saw, The displacement is maintained as it is.

The displacement and the pressing force can be adjusted through various adjustments. In the case where all the band saws are formed into an endless track having the same length, there may be a difference in the lengths left for each band saw in the portion D in FIG. This difference in length can be absorbed by appropriately selecting the diameter of the tensioner pulley 500 and the fixing position of the tensioner pulley displacement adjusting portion with respect to the tensioner pulley arm plate, and the tension applied to each band saw can be adjusted by appropriately adjusting the tensioner pulley tension adjuster Can be adjusted.

This tensioner pulley structure further includes a tension support block 550 as shown in FIG. The tension supporting block 550 is a fixed member and serves to support the head portion of the tensioner pulley tension adjusters 515, 525, and 535. A hole is formed to insert a driver or the like in the direction of the arrow shown in FIG. It is possible to unscrew or tighten the adjuster.

A sensing portion 560 may be provided at a portion of the tension supporting block 550 that contacts the head portion of the tensioner pulley tension adjusters 515, 525, 535. The sensing unit can be composed of a limit switch or the like. When tension is applied to the band saw in normal condition, the head portion of the tensioner pulley tension adjusters (515, 525, 535) is in close contact with the tension supporting block (550) so that the sensing portion (560) is held pressed. If the band saw that is applying the tension is broken, the tensioner pulley arm plate is released by the elastic force of the spring and is rotated in the clockwise direction in FIG. 6 about the normal axis 540, and the head portion The limit switch that is being held is released while moving away from the tension support block.

When the limit switch is released, the power supplied to the driving unit 110 is immediately shut off by the signal, so that the braking apparatus can be operated and the apparatus can be brought to an emergency stop. Of course, it is possible to add a configuration to notify the user in such a manner that a warning sound or the like is turned on in such a situation.

In FIG. 5, the tensioner pulley 500 is provided between the idler pulley 400 and the drive pulley 130, but it is not necessarily limited to this position. Since the driving force of the driving pulley 130 acts to pull the band saw 200 as shown in the drawing, when the moving direction of the band saw is taken as a reference, the distance between the driving pulleys 130 When the tensioner pulley 500 is disposed between the pulley and the drive pulley, the pulling force of the drive pulley is directly applied to the tensioner pulley 500 when a sudden cutting resistance occurs in one band saw, It is preferable that a tensioner pulley be disposed between the drive pulley and the idler pulley, or between the idler pulley and the b driven pulley, rather than between the pulley and the drive pulley. It is further preferable that a tensioner pulley is disposed between a drive pulley and an idler pulley, which is the portion where the deviation of the loci of the plurality of band saws is the smallest and the tension of the entire orbit is the least.

The above-described multi-band sawing machine can be used for cutting various workpieces, for example, wood. The present invention is particularly well suited for cutting frozen dough. When the frozen meat is cut with a band saw, the frozen portion may be locally melted due to frictional heat between the band saw and the frozen meat. This is one of the causes of the taste drop in meat. Therefore, it is necessary to consider that cutting must be performed within a range in which the conveying speed of the frozen meat and the conveying speed of the band saw are optimized without affecting the frozen meat as much as possible. Therefore, the plurality of band saws should all be configured so that the conveying speed is substantially the same. The present invention adheres to this point.

In addition, since the frozen meat is a food, local loads are concentrated on a part of each constituent of the present invention (for example, pulleys or band saws), which is mainly made of metal, so that wear of the metal foreign substances into the frozen meat is extremely dangerous That's the point. Thus, since the cutting is sequentially performed two times, the cutting device does not need to be operated with a very large force, so that the probability of occurrence of abrasion between the components or the amount of generation is remarkably reduced .

In addition, by controlling the tension applied to each band saw individually, the uniformity of the tension applied to all the band saws is maintained to the maximum, so that the load is concentrated on one band saw to greatly reduce the possibility of wear, and when one band saw is broken It should be noted that by discontinuing the operation, the occurrence of metal debris that may have occurred as a result of striking or tangling of the broken band saw with the other configuration was minimized.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious that it can be done. Although the embodiments of the present invention have been described in detail above, the effects of the present invention are not explicitly described and described, but it is needless to say that the effects that can be predicted by the configurations should also be recognized.

100: drive system
110:
120: Power transmission unit
130: Driving pulley
140:
200: band saw
210: first band saw
220: second band saw
230: Third band saw
300: Follow pulley
300a: a follower pulley
300b: b driven pulley
310a: 1st stage driven pulley (large)
320a: Secondary driven pulley (middle)
330a: 3rd driven pulley (small)
310b: 1st b driven pulley (large)
320b: second driven pulley (middle)
330b: Third driven pulley (small)
340a: a-type coaxial
340b: b-type coaxial
400: idler pulley
410: 1st idler pulley (small)
420: second idler pulley (middle)
430: Third idler pulley (large)
440: idler pulley shaft
500: tensioner pulley
510: First tensioner pulley (small)
520: second tensioner pulley (middle)
530: Third tensioner pulley (large)
511: 1st tensioner pulley moving shaft
521: second tensioner pulley moving shaft
531: Third tensioner pulley moving shaft
513: first tensioner pulley arm plate
523: Second tensioner pulley arm plate
533: Third tensioner pulley arm plate
514: first tensioner pulley displacement regulator
524: second tensioner pulley displacement regulator
534: Third tensioner pulley displacement regulator
515: First tensioner pulley tension adjuster
525: Second tensioner pulley tension adjuster
535: Third tensioner pulley tension adjuster
516: first tensioner pulley tension spring
526: second tensioner pulley tension spring
536: Third tensioner pulley tension spring
540: Tensioner loosening and straightening
550: Tension support block
560:
600: push assembly
610: Push bar
620: Combining block
630:
G: Guide sidewall
P: Direction of progress
W: Workpiece
X: cutting area
Y: first guide roller
Z: second guide roller

Claims

A plurality of band saws 200 each having a blade formed in a cutting direction X in a direction opposite to a traveling direction P of the workpiece W, wherein the plurality of band saws 210, 220, The plurality of band saws are spaced apart from each other in the width direction by a thickness of the workpiece to be cut in the cutting area X, A multi-band sawing machine disposed.

The method according to claim 1,
The plurality of band saws are respectively wound on a plurality of driven pulleys 310b, 320b, and 330b disposed on the entry side of the band saw with respect to the cutting area X and disposed on the advancing side of the band saw with respect to the cutting area X Wherein the plurality of band saws are respectively wound on the plurality of driven pulleys (310a, 320a, 330a), and the driven pulleys are independently rotatable.

The method of claim 2,
A plurality of driven pulleys 310b, 320b, and 330b disposed on the entry side of the band saw with respect to the cutting area X and a plurality of driven pulleys 310a, 320a, and 330a disposed on the advancing side, 340b, and 340a, and the diameter of the plurality of driven pulleys that are shafted on the same slave axis are different from each other,
the difference in diameter between the driven pulleys 310a, 320a and 330a provided on the a-axis coaxial shaft 340a and the difference in diameter between the driven pulleys 310b, 320b and 330b axially extended on the b- Features multi-band sowing machine.

The method of claim 3,
Wherein the plurality of band saws (210, 220, 230) are wound on a plurality of idler pulleys (410, 420, 430), respectively, and the diameter of the driven pulley and the idler pulley wound on the same band saw are complementary to each other.

The method according to claim 1,
The plurality of band saws are wound around a drive pulley 130 having the same diameter so that the band saws wound on the drive pulley 130 move at the same linear velocity as the drive pulley 130 rotates Features multi-band sowing machine.

The method according to claim 1,
The plurality of band saws 210, 220 and 230 are respectively wound on a plurality of tensioner pulleys 510, 520 and 530,
Further comprising a sensing unit (560) for sensing that the tensioner pulley wound around the band saw when the at least one of the plurality of band saws is cut off,
Further comprising a power cut-off device for cutting off the power when the detector (560) detects that the tensioner pulley is splashed.

The method according to claim 1,
Two multi-band sawing machines are symmetrically disposed about the cutting area X to extend the width of the cutting area,
Wherein the two multi-band sawing machines receive power from one drive unit (110) and have the same drive speeds to be transmitted to the two multi-band sawing machines.

A plurality of band saws 200 each having a blade formed in a cutting direction X in a direction opposite to a traveling direction P of the workpiece W, wherein the plurality of band saws 210, 220, The plurality of band saws are spaced apart from each other in the width direction by a thickness of the workpiece to be cut in the cutting area X, A push assembly (600) for transferring a workpiece to be cut by a multi-band sowing machine to be placed,
And a plurality of push bars (610) disposed between the plurality of band saws adjacent in the width direction and extending along the traveling direction of the work.

The method of claim 8,
The push assembly 600 is fixed to a plurality of push bars 610 disposed parallel to each other with a coupling block 620 interposed therebetween and a coupling hole 630 providing a coupling force in the width direction .

The method of claim 9,
The length of the engaging block 620 fixed to the push assembly 600 in the advancing direction P is determined by the position of a plurality of band saws 210,220 and 230 which do not overlap each other with respect to the traveling direction of the workpiece in the cutting area X, Of the push assembly.

The method of claim 9,
Wherein the coupling block (620) has a predetermined width and interposes the at least one coupling block between two adjacent push bars.