JP3231054B2 - Band sawing machine blade changer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a saw blade changing device for a band saw machine, and more particularly to a device for automatically changing an endless band saw blade spanned between a driving wheel and a driven wheel provided in a saw blade housing. The present invention relates to a saw blade changing device for a band sawing machine.

[0002]

2. Description of the Related Art A band saw machine generally includes an endless band saw blade which is wound around a drive wheel and a driven wheel provided on a saw blade housing, and the band saw blade travels between the two wheels. The cutting material such as a bar material is cut. In this case, the band saw blade is provided with a rotational force from the driving wheel, and is mounted so as to run between the two wheels while a predetermined tension is applied between the two wheels. There is a need.

Conventionally, when a band saw blade is replaced, the band saw blade is detached from the two wheels and collected, and a new band saw blade is mounted on the two wheels by manual operation.

[0004]

Conventionally, when a band saw blade is replaced on a band saw machine, removal and recovery of the band saw blade from the two wheels and mounting of a new band saw blade on the two wheels are all performed by an operator. Is performed manually, and replacement of the saw blade requires manual labor. Also,
This replacement of the saw blade requires experience and is inefficient, which lowers the operating rate of the band saw machine and hinders labor saving in the band saw machine.

In particular, when it is necessary to select and use an appropriate band saw blade according to the material, shape, dimensions, etc. of the material to be cut, a plurality of types of band saw blades are prepared, and each time the band saw blade is replaced, Manual work by workers is required. In addition, the replacement of the saw blade is a great hindrance when attempting to cut a variety of materials by an unmanned and automatic operation with a band saw machine, making it impossible to replace the saw blade.

Therefore, various devices have been developed for automatically replacing the saw blade without relying on manual replacement of the saw blade by the operator. However, since the band saw blade is flexible and endless, it is difficult to handle it. The replacement of the saw blade has not been performed reliably.

SUMMARY OF THE INVENTION In view of the above-mentioned problems in replacing a band saw blade in a band saw machine, it is an object of the present invention to replace a band saw blade in a band saw machine, especially between a plurality of types of band saw blades. It is an object of the present invention to provide a band sawing machine with a saw blade changing device capable of automatically, efficiently, surely and easily changing the saw blade without the need for the same.

[0008]

SUMMARY OF THE INVENTION The present invention relates to the above-described problems.
The invention according to claim 1 has been made in view of the
Drive wheels and auxiliary wheels on the saw blade housing of the sawing machine
A band for attaching and removing an endless band saw blade to and from the moving wheel
Multiple band saw blades can be detached in the saw blade changing device
The collection position close to the band saw blade storage device supported by the
Moveable to and from the saw blade replacement position close to the blade housing
Provide a handling holder on the return member, and
At a plurality of locations of the holder, a plurality of
A handling section including a clamp piece is provided, and the
In the retracted position, the clamp piece is the band saw blade storage device
Orientation and the clamp in the saw blade replacement position
Reciprocate so that the piece is oriented in the direction of the saw blade housing
The handling holder is installed rotatably with respect to the moving member.
It is a digit configuration .

[0009] The invention according to claim 2 is the invention according to claim 1.
In the saw blade replacement device for a band saw machine, the handling unit
Moves to the hold axis provided in the handling holder
Supported in one direction and urged in one direction by an ammunition
Configuration .

According to a third aspect of the present invention, there is provided a band saw
Driving wheel mounted vertically on blade housing
Of the endless band saw blade to the driven wheel
A plurality of band saw blades in the
A collection position close to the detachably supported band saw blade storage device
Move to the saw blade replacement position close to the saw blade housing.
The handling holder is provided vertically on the existing reciprocating member,
Hose provided horizontally at a plurality of locations of this handling holder
A plurality of clamp pieces that can hold the band saw blade
A plurality of handling units provided with are provided movably,
On the band saw blade gripped by the plurality of handling units
The upper saw blade home that can hold
It is provided to be able to move up and down on the upper part of the rudder and under the band saw blade.
The lower saw blade home, which can hold
It is configured to be able to move up and down below the rudder .

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings.

Referring to FIG. 1, for example, as a band saw machine,
The vertical band saw 1 includes a base 3.
1, a saw blade housing 7 is provided which is movable in the vertical direction, that is , in the cutting direction with respect to the workpiece W in FIG. The saw blade housing 7 has a wheel mounting portion 7a and a yoke portion 7b.
A driven wheel 9 and the drive wheel 11 is attached taken to be rotation spaced apart in the direction) orthogonal to the paper surface of.

[0013] band saw blade T of the driven wheels 9 and over the drive wheel 11 an endless shape is wound around. A wheel drive motor 13 is linked to the drive wheel 11.

With the above configuration, the wheel driving motor 1
When the drive 3 is driven, the drive wheel 11 is rotated.
The rotation of the drive wheel 11 causes the band saw blade T to travel between the driven wheel 9 and the drive wheel 11.

The band saw blade T is the one of the spanning member pair of upper and lower saw blade guide member 15 provided on the (lower side in FIG. 1) between the driven wheel 9 and the drive wheel 11, the teeth
The tip is twisted so as to point in the direction of the work W, and the band saw blade T is cut at a right angle to the side surface of the work W between the respective saw blade guide members 15. Note that the saw blade guide member 15 does not interfere with the replacement of the saw blade.
It is adapted to be had for saving.

The saw blade housing 7 includes a nut member 17.
A ball screw 19 extending vertically in FIG. 1 is screwed to the nut member 17. A drive motor 23 is interlockingly connected to an upper portion of the ball screw 19 in FIG. 1 via a transmission 21 including, for example, a pulley and a belt.

With the above configuration, when the drive motor 23 is driven, the ball screw 19 is rotated via the transmission 21. The rotation of the ball screw 19 causes the nut member 17 to rotate.
The saw blade housing 7 is guided by the guide rail 5 in the vertical direction in FIG.

[0018] While the drive wheel 11 is rotatably provided at stationary position relative to the saw blade housing 7,
The driven wheel 9 is provided so as to be movable by a hydraulic cylinder device (not shown) in a direction in which the driven wheel 11 is moved away from the driving wheel 11, that is, in a direction in which the distance between the wheels is changed.
Saw blade T spanned between the drive wheel 11
Is given a predetermined tension and is released.

Rear part of the base 3 (upper part in FIG. 1)
Is equipped with a saw blade changing device 25 . That is,
The base 3 vertically pivot 27 extends (the direction perpendicular to the paper surface in FIG. 1) is rotatably supported. As shown in FIG.
One end of the handling arm 29 of the backward movement member is pivotally connected, vertical shaft 31 to the other end of the handling arm 29 is rotatably provided in its center line around. The vertical shaft 31 extends parallel to the inter-axis direction of the driven wheel 9 and the drive wheel 11, the vertical axis
A handle holder 33 is attached to the vertical and vertically movable by a predetermined amount. Handling holder 33
Is provided with a handling portion 35 capable of holding the band saw blade T freely .

The handling arm 29 has a pivot as a center of rotation, and as shown by a two-dot chain line in FIG. 1, its tip is located near the wheel mounting portion 7a of the saw blade housing 7 at the retracted position. Position TS and FIG.
Freely move between the automatic saw blade loading recovery position ST1 apart from as the saw blade exchange position shown in solid lines in
That is , it can be rotated and displaced. Moreover, the handle arm 29 is connected to the yoke portion 7 of the saw blade housing 7.
tip to avoid interference with b has the form curved as for example the arcuate be close to the wheel mounting portion 7 a.

In the automatic saw blade loading and collecting position ST1, a band
A tool tower 37 as a saw blade storage device is arranged. As a specific configuration of the tool tower 37, as shown in FIGS. 2 and 3, for example, a body 39 having a square cross section is fixed on a floor with a plurality of adjustment bolts 41. A rotatable vertical shaft 4 is provided at the axial center of the body 39.
3 are supported. Ring members 47 having shot pin holes 45 are fitted to the vertical shaft 43 at intervals of 90 degrees. The coupling of the lower portion of said body 39 has rotated fluid cylinder 49 is attached as shown in Figure 3, the tip is the ring member 47 of the piston rod 51 mounted on the fluid cylinder 49 Have been.

An index link member 53 is provided on the vertical shaft 43 via a sliding key 55 so as to be vertically movable. A shot pin 57 engageable with the shot pin hole 45 is provided below the index ring member 53.
There together are provided so as to protrude downward, another shot pin 59 in the upper part in correspondence with the shot pin 57 in the index ring member 53 is provided to protrude upward.

A shot pin 5 is mounted on the ceiling of the body 39.
A shot pin hole 61 with which the hole 9 engages is provided at a position corresponding to the shot pin hole 45. The vertical shaft 4
A cylindrical rotating magazine 65 having, for example, a regular octagonal cross section and extending in the vertical direction in FIG. This rotating magazine 6
Upper and lower wheels 67U, 67 as band saw blade holders for loading and storing band saw blades T on the upper and lower sides of the four surfaces of No. 5
D is provided.

[0024] wherein the ceiling upper surface of the body 39, as shown in FIG. 4, L-shaped wherein in de Ikkusu ring member with the bracket 69 is attached a shape 53
Vertical fluid cylinder 71 for vertical movement to order are provided. A vertically extending pin 75 is provided at the lower end of the piston rod 73 mounted on the vertical fluid cylinder 71.
The pin 75 is provided with an engaging pin 77 which is engaged with a groove 53G formed on the outer peripheral surface of the index ring member 53 and protrudes horizontally .
The body 39 is provided with a sensor 79 for detecting the vertical movement of the pin 75 .

With the above configuration, the rotating magazine 65 is
Every time each time the dynamic and indexing to To, first, when allowed to rise to the piston rod 73 actuated the upper and lower cylinder 71 in FIG. 4, the pin 75, an index ring member 53 through the engaging pin 77 is vertical shaft Up against 43 , below
Shot pin 59 Gabo de I 3 shot pins 57 of the upper with outside or shot pin holes 45 of the ring member 47
9 is engaged with a shot pin hole 61 provided on the ceiling . The piston rod 43 actuated the rotation fluid cylinder 49 in a counter-clockwise direction in the ring member 47 only <br/> Figure 3 with respect to the vertical axis 43 when extended to the stroke end as shown in FIG. 3 in this state It will be rotated 90 degrees.

When the vertical fluid cylinder 71 is actuated to lower the piston rod 73 in FIG.
The index ring member 53 descends. as a result,
With upper shot pin 59 is disengaged from the shot pin hole 61, the the lower shot pin 57 ring members 4
7 is engaged with the shot pin hole 45. In this state, when the piston 51 of the rotating fluid cylinder 49 is contracted, the rotating magazine 65 is integrally rotated via the vertical shaft 43, and the ring member 47 is returned to the original position .
Therefore, by repeating the above operation, the rotating magazine 65 is rotated every 90 degrees to perform indexing.
And

Although the rotating magazine 65 has been described as having a quadrangular prism shape, it may be a polygonal prism such as a triangular prism, a pentagonal prism, or a hexagon.

[0028] As shown in FIG. 5, four sets of wheels 67U, among 67D, for example, lower surface of the automatic band saw blade loaded recovery position ST1, left side manual band saw blade loaded recovery position S
T2 is shown. At the automatic and manual band saw blade loading and collecting positions ST1 and ST2 , the band saw blade T is
It needs to be removed from 7D or hung. In that case, it is necessary to loosen the tension of the band saw blade T,
Each wheel 67U moves up and down with respect to the rotating magazine 65.
The fluid cylinder 79 is mounted on the upper part of the body 39 at the automatic and manual band saw blade loading and collecting positions ST1 and ST2 as shown in FIGS. Have been. This fluid cylinder 7
A pressing block 83 is provided at the tip of the piston rod 81 mounted on 9.

On the other hand, the upper side of each surface of the rotating magazine 65
One end of a spring 87 is attached to the wheel 67U via a support block 85, and the other end of the spring 87 is fixed to a bracket 89 attached to the rotating magazine 65, as shown in FIG. ing.
Moreover, with the center of the upper wheel 67U through the support block 91 is the upper end of the pull rod 93 is attached, as the lower end of the pull rod 91, shown in Figure 2, under the press block 83 Positioning to the side
A fixing block 95 is provided. In addition, water is supplied from the support block 91 to the upper part of the rotating magazine 65.
A support block 97 is attached at a distance in the horizontal direction, and a wheel 67U is pivotally supported via a hinge pin 99 to the support block 97 provided at an eccentric position .

With the above configuration, the fluid cylinder 79 is operated.
The piston rod 81 is lowered, pressing the block 83 moves downward reluctant such presses the fixed block 95 provided in the lower part of the flop Ruroddo 93. As a result, the lowering of the pull rod 93 causes the hinge pin 99 to move.
And manual band saw blade loading and collecting positions ST1, S
The wheel 67U at T2 is opposed to the spring 87.
By being swung downward Te, wheel 67U and 6
The tension of the band saw blade T wound around 7D is loosened. Accordingly, when the tension of the band saw blade T is loosened, the automatic and manual band saw blade loading / recovering position S is set.
The band saw blade T in T1 and ST2 can be easily removed or mounted.

As shown in FIG. 5, when the band saw blade T is mounted on the wheels 67U and 67D, the band saw blade T
The wheels 67U, 67U are mounted in a fixed position.
On both sides of D, saw blade position regulating members 101 are provided.

[0032] The handling arm 29 forward between the saw blade replacement position TS and the automatic saw blade loading recovery position ST1
As it can be FukuUtsuri movement, horizontally rotatable via a pivot 27
To provided Oh Rutotomoni, at the tip of the handling arm 29
Handling holder 33 provided vertically rotated horizontally, the wheel mounting portion 7a or the wheel 67U of the saw blade housing 7 a handling portion 35 with a saw blade replacement position TS or automatic saw blade loading recovery position ST1, 67D side
It is oriented toward the direction .

More specifically, as shown in FIG. 7, a hollow pivot 27 is supported on the base 3 vertically and rotatably. On the upper side of the pivot 27, the base side of the handling arm 29 is attached to the mounting bracket 1.
03 are integrated. A driven pulley 105 is attached to a lower portion of the pivot 27, and a turning drive motor 107 with a brake is attached to the base 3. Output shaft 1 of this turning drive motor 107
Drive moving pulley 111 is mounted on the 09. A timing belt 113 is wound around the driving pulley 111 and the driven pulley 105.

With the above configuration, the turning drive motor 107
Is driven, the driving pulley 1 is driven via the output shaft 109.
11 is rotated. The rotation of the driving pulley 111 causes the handling arm 29 to be horizontally rotated via the timing belt 113, the driven pulley 105, and the pivot 27.

A handling holder 3 is provided in the base 3.
A rotation drive motor 115 for rotating the motor 3 is mounted. A drive pulley 119 is mounted on an output shaft 117 of the rotation drive motor 115.

On the other hand, the rotating shaft 121
Are vertically and rotatably supported, and a driven pulley 123 is attached to a lower portion of the rotating shaft 121. A timing belt 125 is wound around the driven pulley 123 and the driving pulley 119.

The upper part of the rotating shaft 121 is inside the handling arm 29, and another pulley 127 is mounted on the upper part of the rotating shaft 121. The distal end of the handling arm 29 has a vertical shaft 31 is rotatably supported, the locking nut 12 on the upper portion of the vertical shaft 31
At 9, the pulley 131 is fixedly attached. A timing belt 133 is wound around the pulley 131 and the pulley 127. This timing belt 133
In order to assist the traveling of the vehicle, an idler pulley 135 is provided on the handling arm 29 via a mounting bolt, and the idler pulley 135 is attached to the timing belt 1.
33.

With the above configuration, the rotation drive motor 115
Is driven, the driving pulley 1 is driven via the output shaft 117.
19 is rotated. The rotation of the drive pulley 119 causes the rotation shaft 121 to rotate via the timing belt 125 and the driven pulley 123. Further, the pulley 127, the timing belt 133 by the rotation of the rotary shaft 121, a pulley 131, handling the holder 33 via a vertical shaft 31
Will be rotated horizontally . Thus, the handling arm 29 is rotated between the saw blade replacement position TS and the automatic saw blade loading / recovering position ST1. Further, the handling holder 33 is rotated horizontally, and the handling unit 35 provided on the handling holder 33 is moved in the saw blade housing direction at the saw blade replacement position TS or the automatic saw blade loading / recovering position ST1 .
The tool tower can be oriented .

At the bottom of the base 3, sensors 137A and 137B such as proximity switches for detecting the angle at which the handling arm 29 is positioned at the saw blade replacement position TS or the automatic saw blade loading / recovering position ST1 are attached. ing. Further, two proximity sensors 139 are mounted on the upper portion of the base 3, and a dog 141 is provided on the handling arm 29. Ri by the and the two proximity sensors 139 and the dog 141, Ha-end ring arm 29 is detected to have been turned to the saw blade replacement position TS or automatic saw blade loading collection position position ST1. These sensors 137A, 137B; 139 rotational drive motor 11 5 instead of, may be detected provided the encoder turning driving motor 107.

As a specific configuration of the handling holder 33, as shown in FIGS. 8 and 9, four handling portions 35 capable of gripping the band saw blade T are provided above and below the handling holder 33. In addition, a twisting device 143 for twisting the band saw blade T is provided on the left side in FIG.

[0041] The handling holder 33 is divided into up and down direction. That is, as shown in FIGS.
In addition, the handling holder 33 has an upper holder 33A and a lower holder 33B connected to each other.
3A is appropriate gap S is opened against vertical axis frame 31F that supports the vertical shaft 31 is provided vertically movable. That is, the vertical cylinder 145 is mounted in the upper part of the lower holder 33B, and the tip of the piston rod 147 mounted on the vertical cylinder 145 is mounted on the lower part of the vertical shaft 31. Upper holder 33
A convex spherical seat 149 is provided below A, and a concave spherical seat 151 is provided on the upper surface of the lower holder 33B corresponding to the spherical seat 149. Thus handling holder 3 3 right and left, is avoided from being displaced back and forth.

When the piston rod 147 is contracted in FIG. 9 by operating the vertical cylinder 145 according to the above configuration, the upper holder 33A is moved to the sliding surface 33S of the vertical shaft 31.
The lower holder 33B is also raised by being guided to the upper stroke end (gap S). The upper holder 33A is lifted by the upper holder 33.
A is detected by an upper sensor 153 provided at A.

Therefore, when the band saw blade T clamped by the handling portion 35 is hung on the drive wheel 11 by raising the upper holder 33A ,
It will be in a state of being hung on the lower side of the eel 11 and held.

When the vertical cylinder 145 is operated to extend the piston rod 147, the upper holder 33A is guided by the slide surface 33S and descends to the lower stroke end. The lowering of the upper holder 33A is detected by a lower sensor 155 provided on the upper holder 33A. Therefore, as the lower holder 33B is in the state of FIG. 9, is lowered, when removing the saw blade T from the drive wheel 11, or the lower side of the drive wheel 11
Becomes Rukoto away Luo band saw blade T, can be easily removed.

A guide member 157 is provided vertically on the upper left side in FIG. 9 of the upper holder 33A, and a slide member 159 that slides in the vertical direction is provided on the guide member 157. The slide member 159 has an L-shape and has an upper side of the band saw blade T.
The upper saw blade homer 161 having a portion in contact with the upper saw blade 161 is attached as shown in FIG. The upper holder 33A has an upper cylinder 1 for the upper saw blade homer.
63 and the upper and lower cylinders 16
The slide member 159 is provided at the tip of the piston rod 165 mounted on the third member 3.

[0046] The piston rod 165 actuates the upper and lower cylinders 163 by the configuration and above downward, the sliding member 1
On the upper saw blade Ho Ma 161 of the band saw blade T 59 moves up and down the
The radius of curvature of the upper part of the band saw blade T is reduced by contacting the
It is suppressed from becoming smaller and can be attached to and detached from the driven wheel 9
When doing so, it is avoided so as not to interfere with the flange portion of the driven wheel 9 .

As described above, a guide member 167 is vertically attached to the lower portion of the lower holder 33B, and a slide member 169 that slides in the up-down direction is provided on the guide member 167. The slide member 169 has an L-shaped portion and a portion that contacts the lower side of the band saw blade T.
As shown in FIG. 8, a lower saw blade former 171 formed in an arc shape is attached. Also, the lower holder 33B
A vertical cylinder 173 for a lower saw blade homer is attached to the lower end of the piston rod 175 mounted on the vertical cylinder 173.
Is provided.

[0048] When allowed to move up and down the piston rod 175 by operating the vertical cylinder 173 by the above configuration, since the slide member 169 is guided by the vertical movement of <br/> the guide member 167, band saw blade the lower saw blade Houma 171 On the lower side of T
Can be abutted and supported . As a result, when attaching and detaching the band saw blade T to and from the driving wheel 11 , the lower part of the band saw blade T
The reduction of the radius of curvature is suppressed, and the driving wheel 1
This avoids interference with the first flange portion.

The handling holder 33 includes the belt
A plurality of handling portions 35 capable of gripping the saw blade T are provided. More particularly, FIG. 10, as shown in Figure 11, vertically slidable slide member 177 (the direction perpendicular to the paper surface in FIG. 11) is spaced vertically handling the holder 3 3 Respectively . Left right in the slide member 177
, Two hold shafts 179 penetrating horizontally are supported . A band saw blade T is provided on each of the left and right sides of each of the hold shafts 179.
Outer clamp piece 18 as a clamp capable of freely clamping
1 and inner clamp piece 183 can move in the left and right direction respectively
Noh is attached. Further, each of the left and right sides near the holding shaft 179 is spring Li retainer 185 is attached, the spring re retainer 185 wherein each inner clamping piece 1
A compression coil spring 187, which is an elastic machine, is provided between the compression coil spring 183 and the compression coil spring 187. The compression coil spring 187 is the inner class
Presses the pump piece 183 toward the outer clamp piece 181.
It is energized as follows .

The slide member 177 is provided so as to be vertically slidable with respect to the handling holder 33. More specifically, as shown in FIG.
The upper and lower support blocks 189U and 189D provided on the handling holder 33 above and below the slide member 177, respectively .
Are mounted shafts 191U and 191D penetrating vertically . The tip (lower end, upper end) of each of the shafts 189U and 189D is provided above the slide member 177.
Hemispherical fixed block 193 in contact with surface and lower surface
U, and 193D are provided, the block 193
U, 193D and the upper and lower support blocks 189U, 18
Springs 195U and 195D are provided between the springs 9D and 9D.
The upper shaft 189U moves downward, and the lower shaft 189U moves downward.
The shaft 189D is urged upward .

[0051] Ri by the above-described configuration, the slide member 177,
In a normal state the compression coil spring 195U, the state near held in position in the vertical direction of the neutral by the urging force of 195D
You. Then, when an external force is applied, the compression coil springs 195U and 195D are moved in the vertical direction against the compression springs 195U and 195D.

[0052] wherein the each of the right and left inner clamp pieces 183, as shown in FIG. 11, a driven wheel 9, the back face 9a of the drive wheel 11, you define contact with the saw blade replacement position TS to 11a stopper A member 197 is provided.

The handling holder 33 shown in FIG.
In the lower part of FIG. 1, the left and right support blocks 199R, 19
9L are integrally mounted, and penetrate the left and right support blocks 199R and 199L so as to be movable in the left and right directions.
The shaft 201R, are 201L GaSo wearing. At the inner ends of the shafts 201R and 201L , the vertical shaft 3
Fixed block 203R in contact with the lateral direction to a pin 207 provided on the 1, 203L, respectively. Left and right springs 205 are provided between the fixed blocks 203R and 203L and the support blocks 199R and 199L.
R, 205L are provided.

With the above structure, the left and right inner clamp pieces 1
When the stopper member 197 provided in the 83 abuts driven, the back surface 9a of the driving wheels 9 and 11, in 11a, left and right application of
When one of the stopper members 197 comes into contact first, the left and right springs 205 provided on the handling holder 33 are provided.
R, hand around vertical shaft 31 against urging force of 205L
The ring holder 33 rotates horizontally. And left and right
By the action of the pulling 205R, 205L, the left and right
Tsu path member 197 is driven wheel 9, the drive wheel 11
It comes into contact with the back surfaces 9a and 11a, respectively .

[0055] left and right on the inside of the inner clamp piece 183
A fluid cylinder 209 that operates in the direction is attached, and the tip of a piston rod 211 attached to the fluid cylinder 209 is attached to the outer clamp piece 181. Therefore, this fluid cylinder 209 is operated.
As a result, the outer clamp piece 181 is
Move in a direction relatively approaching and separating from the
The band saw blade T can be clamped .

Next, the operation when performing fraud and mitigating risk attachment and detachment of the band saw blade T in a saw blade replacement position T and the automatic saw blade loading recovery position ST1 above such configuration.

First, in FIGS. 10 and 11, when the fluid cylinder 209 is operated to extend the piston rod 211 outward, the outer clamp piece 181 is
79 abuts against the stopper provided at the end of the coil 79, so that the inner clamp piece 183 is relatively opposed to the biasing force of the compression coil 187.
During the move inward outer clamp pieces 181 and the inner clamping piece 183 is either opened in manner. Driven handling holder 33 in this state, the driving wheel 9 and 11 or the wheel 67U, by Rukoto move to 67D side, for example
If driven, the band saw blade T that under tension are train-around the drive wheel 9 and 11 will be located between the outer clamp pieces 181 and the inner clamp pieces 183.

Next, when the piston rod 211 is contracted,
Outer clamp piece 181 approaches inner clamp piece 183
So that the band saw blade T is clamped by the outer clamp piece 181 and the inner clamp piece 183 . Then, for example
When the driven wheel 9 is moved to the drive wheel 11 side to loosen the tension of the band saw blade T, the outer side and the inner clamp pieces 181 and 183 in a state where the band saw blade T is clamped by the urging force of the compression coil spring 187 move outward. As a result, the band saw blade T is driven, and is in a state of being detached from the drive wheels 9, 11 or the wheels 67U, 67D. In this state, the handling holder 33 is driven and driven by the driving wheels 9, 11 or the wheels 67U, 67D.
By retracting away , the band saw blade T
Driven, driven wheels 9, 11 or wheels 67U,
It will be automatically removed from 67D.

When the band saw blade T is mounted on the driven, drive wheels 9, 11 or the wheels 67U, 67D, the operation described above may be performed in reverse, and detailed operations are omitted.

The band saw machine has a band saw blade T like a plate saw.
May be used without twisting, but generally, it is necessary to guide the saw blade guide member 15 in a state where the band saw blade T is twisted. Therefore, the handling holder 33
Is provided with a twisting device 143 as shown in FIGS. The base 213 of the twisting device 143 is attached substantially at the center of the handling holder 33.

As shown in FIG. 13, a support member 215 is integrated on the base 213, and a moving cylinder 217 is provided with a plurality of bolts on the right side of the support member 215 in FIG. And so on. A plurality of guide shafts 219 are provided on the support member 215.
Is mounted, and the guide shaft 219
Is provided with a slide member 221 movable in the left-right direction in FIG. The slide member 221 is provided with movable pieces 221A and 221B.

The tip of a piston rod 223 mounted on the moving cylinder 217 is attached to the movable piece 221B. On the right side of the slide member 221 in FIG.
27 are attached. At the tip of a piston rod 229 mounted on the turning cylinder 227, a mounting bracket 2 is attached.
31 are attached.

One end of a connecting bar 233 is attached to the mounting bracket 231 with a pin 235, and the other end of the connecting bar 233 is attached to a gripper 239 with a pin 237. A plurality of cam followers 241 are rotatably provided on the gripper 239, and each of the cam followers 241 is inserted into an arc-shaped cam 243 formed on the slide member 221. Further, a regulating member 245 for regulating the back of the band saw blade T is attached to the gripper 239 with a pin 247 and is stopped with a plurality of screws. Furthermore, the dog 239 is attached to the gripper 239.
A, 239B are provided at intervals of 60 degrees,
A sensor 249 for detecting a rotation angle by dogs 239A and 239B is attached to the slide member 221.

The support member 215 has a sensor 251 for detecting the position of the slide member 221 by moving the movable pieces 221A and 221B of the slide member 221.
A, 251B and 251C are provided.

With the above configuration, the sliding member 221 is moved rightward in FIG. 13 by operating the moving cylinder 217 to contract the piston rod 223 in the state of FIG. In the state of FIG. 13, the position of the movable piece 221A is detected by the sensor 251A, so that the position where the band saw blade T is driven away from the drive wheels 9 and 11, ie, the detached position where the tension is loosened can be detected. .

When the slide member 221 moves to the right in FIG. 13 and the position of the movable piece 221B is detected by the sensor 251B, tension is applied to the band saw blade T, and the band saw blade T is driven and the driving wheel 9 is driven. , 11 can be detected.

The slide member 221 further moves to the right, and the position of the movable piece 221B is detected by the sensor 251C.
The escape position for avoiding from the vehicle can be detected.

Further, by operating the turning cylinder 227 to contract the piston rod 229 in the state shown in FIG.
The gripper 239 is rotated counterclockwise in FIG. 13 via the pin 33 and the pin 237. That is, the gripper 239 is rotated by the cam follower 241 rolling counterclockwise while being guided along the cam 243.

When the dog 239A is rotated by the sensor 249,
When the gripper 239 is rotated from the position detected by the above, and the dog 239B is detected by the sensor 249, the gripper 239 is rotated by 60 degrees.

When the gripper 239 is rotated counterclockwise, the band saw blade T is twisted by the tip of the gripper 239, and the band saw blade T is twisted 60 degrees by the amount by which the gripper 239 is rotated 60 degrees. Will be.

[0071] Now, in FIG. 14, the follower, the band saw blade driven, the driving wheel 9 and 11 since the Roll the cell culture multiplied by the band saw blade T to the driving wheels 9 and 11 state that tension is loosened (the state of the T ₁₎ The saw blade guide member 1 is used to make a state in which T is hung and tension is applied (state of T ₀ ).
The band saw blade T must be twisted by 60 degrees between 5, but it is necessary to twist the band saw blade T so as not to interfere with the saw blade guide member 15. This operation will be described with reference to FIG. 14. First, the turning cylinder 227 is operated in a state where tension is not applied to the band saw blade T (state of T1), that is, the position in FIG. band saw blade T detects the dog 239 B by the sensor 249 Te is Nera twisted 60 degrees in a state of T _2.

In this state of T ₂ , the moving cylinder 217
When moved to the right by the movable piece 221B is detected by sensor 251B in FIG. 13 the slide member 221 is actuated and the band saw blade T is moved from the position of T ₂ at the position of T _0, the saw blade guide member 15 and the saw blade guide member 15
Is clamped to. (Position in FIG. 14) In this state, the tension is applied to the band saw blade T, so that the band saw blade T is driven and driven around the drive wheels 9 and 11.

If the gripper 239 is to be returned to the original state in this state, the gripper 239 interferes with the saw blade guide member 15, and
By operating the moving cylinder 217, the slide member 221 is moved.
When the movable piece 221B is detected by the sensor 251C by moving to the right in FIG. 13, the gripper 239 is moved from the position in FIG. Further, the gripper 23 is moved by moving the handling arm 33 downward in FIG.
9 will be avoided from the saw blade guide member 15.

The gripper 239 can use a movable clamp member reciprocated by a fluid cylinder with respect to a fixed clamp member in addition to the structure of the above-described embodiment.

A driven gear provided on the saw blade housing 7,
The operation of attaching the band saw blade T selected from the tool tower 37 to the drive wheels 9 and 11 will be briefly described. The handling arm 29 is rotated to move the handling holder 33 to the automatic saw blade loading and collecting device ST1 of the tool tower 37.
To go to. At this time, the handling holder 33 is in an upper state and the lower saw blade homer 171 is in a lower state. In addition, the twisting device 143 is waiting at the release position. Moreover, the four outer clamp pieces 181 and the inner clamp piece 183 are open.

Next, when the handling arm 29 is moved to the tool tower 37 side, after the sensor 139 is turned on, T1
When the inner clamp piece 183 is further moved after a second, the stopper member 197 provided on the inner clamp piece 183 collides with the wheels 67U and 67D and stops. In this state, the outer and inner clamp pieces 181,
183 sandwich the band saw blade T wound around the wheels 67U and 67D.

The band saw blade T is clamped by the outer clamp piece 181 and the inner clamp piece 183. Wheel 67
The tension of the band saw blade T wound around U and 67D is loosened. In this state, the outer and inner clamp pieces 181, 1
83 is moved outward by about 15 mm, for example. The entire handling holder 33 is lowered, and the entire upper and lower saw blade homers 161 and 171 are lowered. By returning the handling holder 33 to the original position in this state, the band saw blade T is in a state of being removed from the wheels 67U and 67D.

The handling arm 29 is rotated toward the saw blade housing 7 to stop at the saw blade replacement position TS, and the handling holder 33 is directed toward the saw blade housing 7. In this state, the outer and inner clamp pieces 181, 183
The band saw blade T clamped by the driven wheel is driven and driven by the drive wheels 9 and 1.
It is in a state of being multiplied by one. At this time, the band saw blade T is in a state where tension is not applied. Before this, the twisting device 143 is operated to twist the band saw blade T by 60 degrees.

The entire handling holder 33 is raised upward and the band saw blade T is tensioned. Twisting device 1
43 is retracted about 15 mm, and the saw blade guide member 1
Close 5. Twisting device 143 is further extended to, for example, 30 mm.
At the same time, the band saw blade T is unclamped by opening the outer clamp piece 181 and the inner clamp piece 183 to the rear. Next, by returning the handling holder 33 to its original position, the band saw blade T is driven and attached to the drive wheels 9 and 11.

When the band saw blade T is driven and automatically removed from the drive wheels 9 and 11, the reverse operation of the above operation may be performed, and a detailed description thereof will be omitted.

As described above, when attaching or detaching the band saw blade T to or from the driven wheel 9, 11 provided on the saw blade housing 7 of the vertical band saw machine 1, the driven wheel 9 is driven. , 11 at the corresponding positions of the plurality of clamps (outer and inner clamp pieces 181, 18).
By providing the handling holder 33 having the handling portion 35 having 3), the band saw blade T is securely and firmly held by the plurality of clamps without swinging, so that the saw blade replacement is automatically and efficiently performed. Can be performed.

The present invention is not limited to the embodiments described above, but can be embodied in other forms by making appropriate changes.

[0083]

As will be understood from the above description of the embodiment, according to the present invention, the saw blade replacement position TS and the recovery
The band saw blade T is grasped by the reciprocating member movable to the position ST1.
Handling provided with a plurality of handling parts 35 that can be held
Since the holder 33 is provided rotatably, the saw blade
When the replacement position TS and the collection position ST1 are in a facing relationship.
Even if the
The ring portion 35 can be directed in a desired direction,
At the saw blade replacement position TS and the collection position ST1, the band saw blade T
Can surely be held .

In the invention according to claim 2, the handle
The holding part 35 is provided on the handling holder 33.
It is movably supported by a shaft 179 and has a bullet 187
, The elasticity of the band saw blade T
It can respond to deformation and the like .

In the third aspect of the present invention, the belt
Upper and lower saw blade formers 16 that can hold upper and lower portions of saw blade T freely
1,171 can be moved up and down.
The curvature at the top and bottom of T becomes smaller than necessary
Suppresses the attachment and detachment of the band saw blade to the drive wheel, etc.
What can be done .

[Brief description of the drawings]

FIG. 1 is a plan view showing a state in which a saw blade exchanging device according to the present invention is arranged between a band saw machine and a tool tower.

FIG. 2 is a front sectional view showing an example of a tool tower.

FIG. 3 is a cross section taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;

FIG. 5 is a sectional view taken along line VV in FIG. 2;

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 2;

FIG. 7 is an enlarged front sectional view showing a driving system of a handling arm provided with a handling holder at a distal end.

FIG. 8 is an enlarged front view showing a configuration of a handling holder provided at a distal end of a handling arm.

FIG. 9 is a view taken in the direction of the arrow IX in FIG. 8;

FIG. 10 is an enlarged view of a portion viewed from an arrow X in FIG. 8;

FIG. 11 is a sectional view taken along line XI-XI in FIG. 10;

FIG. 12 is a view taken in the direction of the arrow XII in FIG. 11;

FIG. 13 is an enlarged sectional view taken along line XIII-XIII in FIG.

FIG. 14 is an explanatory diagram for avoiding a twisting device from interfering with a saw blade guide member provided on a saw blade housing.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 vertical band sawing machine 7 saw blade housing 9 driven wheel 11 drive wheel 15 saw blade guide member 25 saw blade changing device 29 handling arm 33 handling holder 35 handling section 37 tool tower 65 rotating magazine 67U, 67D wheels (band saw blade holding section) 143 Twisting device 161 Upper saw blade former 171 Lower saw blade former 181 Outer clamp piece 183 Inner clamp piece 187 Compression coil spring (elastic) 239 Gripper T band saw blade

Claims (3)

(57) [Claims] 1. A saw blade housing in a band saw machine (1).
Drive wheel (11) and driven wheel provided for (7)
The endless band saw blade (T) is attached to and detached from (9).
In a band sawing machine, a plurality of band saw blades (T) are used.
Close to the detachably supported band saw blade storage device (37)
Close to the collection position (ST1) and the saw blade housing (7)
Reciprocating member that can be moved to and from the changed saw blade replacement position (TS)
At (29), a handling holder (33) is provided.
The band saw blade at a plurality of locations on the ring holder (33).
(T) a plurality of clamp pieces (181, 18
3) providing a handling section (35) comprising:
At the collection position (ST1), the clamp pieces (181,
183) is directed in the direction of the band saw blade storage device (37).
At the saw blade replacement position (TS)
(181, 183) correspond to the direction of the saw blade housing (7).
The reciprocating member (29) so that
A banding machine for a saw blade changing device, wherein a handle ring (33) is rotatably provided . 2. An apparatus for changing the saw blade of a band saw machine according to claim 1.
In the above, the handling unit (35) includes the hand
To the hold shaft (179) provided in the ring holder (33)
It is movably supported and is supported by an ammunition (187).
Characterized in that it is urged in one direction . 3. A saw blade housing in a band saw machine (1).
(7) The drive wheel (1
1), an endless band saw blade for the driven wheel (9)
(T) Saw blade changer for band sawing machine that replaces and replaces
And a plurality of band saw blades (T) detachably supported.
The collection position (ST1) close to the storage device (37) and the saw
Saw blade replacement position (TS) close to blade housing (7)
Handling holder with reciprocating member (29) movable to
(33) is provided vertically and this handling holder (3
3) Hold shaft (179) provided horizontally at a plurality of locations
And a plurality of clamp pieces capable of gripping the band saw blade (T).
Plurality of handling units comprising (181, 183)
(35) is provided movably, the plurality of handling units
(35 ) Holding the upper side of the band saw blade (T) gripped by
Connect the free upper saw blade homer (161) to the handling
It is provided on the upper part of the rudder (33) so as to be movable up and down, and
Lower saw blade forma (17) that can hold the lower side of the saw blade (T) freely
1) Move up and down to the lower part of the handling holder (33)
An apparatus for replacing a saw blade of a band sawing machine, which is provided so as to be capable of being provided .