JP3126152B2 - Feeding method for cutting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material feeding method in a cutting machine for feeding a workpiece to a cutting machine.

[0002]

2. Description of the Related Art Conventionally, a material supply device is provided on one side of a cutting machine such as a horizontal band saw machine, and a product receiving stand for products cut by the cutting machine is provided on the other side of the cutting machine. I have. The material supply device includes a material feeding conveyor that is movable in the direction in which the workpiece is fed and a material feeding conveyor that is movable in a direction perpendicular to the direction in which the workpiece is fed.

When a work is fed from a feeder to a cutting machine, the work placed on the feeder conveyor is conveyed to the position of the feeder conveyor, for example, by rotating the feeder conveyor in one direction. Then, it is known that the work on the material transfer conveyor is carried into the cutting machine side by rotating the material transfer conveyor in one direction, and cut into a desired length by the cutting machine. In addition, partitioning bars (also referred to as opposing rollers if provided with rollers) are fixed at equal intervals in the longitudinal direction of the material supply conveyor, and the work is placed between the partitioning bars.

By the way, in the above-mentioned conventional material supply device, when the work is placed between the partition bars of the material supply conveyor in the material supply device with a crane or a fork, the work hits the partition bar and breaks the partition bar. There was a problem that there was fear and that the work was damaged.

[0005] The interval pitch of the partition bars is determined according to the maximum capacity (maximum diameter or maximum width of the work) of the cutting machine. There is a problem that only the number corresponding to the pitch can be placed, resulting in waste of space.

Accordingly, the present applicant has solved the above-mentioned problem as described in Japanese Patent Application No. 28690/1990.
In addition to removing the partition bar provided in the conventional material feeding conveyor, a reference member is provided on one side of the material feeding conveyor and the workpiece is brought into contact with the workpiece to perform the standard setting, and then the workpiece is adjusted to the width of the workpiece to be cut. To put it on the material conveyor
After relatively moving the feeding conveyor and the reference member and raising the feeding conveyor, placing the work to be cut on the feeding conveyor and returning the feeding conveyor slightly to provide a space between adjacent members, There has already been proposed a material supply method in a cutting machine, which is characterized in that a workpiece conveyor is rotated to feed a workpiece to a cutting machine.

[0007]

By the way, in the above-mentioned conventional material supply method, a desired work which has been successively arranged and conveyed without gaps on a material supply conveyor is brought into contact with a reference member and then cut. In order to take out the work to be taken out, it is only necessary to move the feeder conveyor and the reference member relatively to position the feeder conveyor once, so
When the work diameter or the work width of the book is small, the distance between the reference member and the corner of the feeding conveyor is short, and in the worst case, there is a problem that the work falls down from the feeding conveyor during the feeding. .

In addition, there is also a problem that the more the workpiece becomes smaller in diameter or width, the more the material bends.

[0009] An object of the present invention is to solve the above-mentioned problems, even if the workpieces are arranged without gaps without providing a partition bar on the material feeding conveyor, the workpieces are not simultaneously fed, and even a small amount of space is required. A feeding method in a cutting machine, in which works of different diameters are placed on a feeding conveyor so that they can be fed to the cutting machine side, and even small-sized or narrow-width works can be fed without falling off the feeding conveyor. To provide.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a cutting machine side from a feeding device constituted by a feeding conveyor and a feeding conveyor provided on one side of a cutting machine. When feeding a workpiece, desired workpieces are sequentially arranged without gaps on the feeding conveyor arranged in a direction orthogonal to the feeding direction of the workpiece, and the workpiece is placed on a reference member provided on one side of the feeding conveyor. After contacting and performing the reference setting, and then performing relative positioning in the feeding direction between the feeding conveyor and the reference member according to the width dimension of the workpiece to be fed, the feeding conveyor is raised. At the very least, after the work is placed on the material feeding conveyor and then the feeding conveyor is reversed at an interval that does not make contact with the adjacent work during the material feeding, the width dimension of the work placed on the material feeding conveyor is constant. If smaller than In order to prevent falling from the feeding conveyor, the feeding conveyor is lowered again, and then the distance between the reference member and the work on the feeding conveyor and the end of the roller in the reference member and the feeding conveyor are reduced. After the positioning is performed so as to increase the relative distance between the feeder and the feeder, the feeder conveyor is raised and rotated again to feed the workpiece to the cutting machine side. Is the way.

[0011]

By employing the feeding method in the cutting machine according to the present invention, a feeding apparatus including a feeding conveyor and a feeding conveyor is arranged on one side of the cutting machine. The works are arranged on the material feeding conveyor without any gap, and the works are brought into contact with a reference member provided on one side of the material feeding conveyor.
Next, relative positioning in the feeding direction between the feeding conveyor and the reference member is performed according to the width dimension of the workpiece to be fed. Then, after raising the feeder conveyor and placing the work thereon, the feeder conveyor is rotated at an interval that does not come into contact with an adjacent work during the feeder, and then the feeder conveyor is rotated, whereby the workpiece is rotated. Is sent to the cutting machine side. Then, it is cut to a desired length and the cutting is repeated until the remaining material is obtained.

When the width dimension of the work is smaller than a predetermined value, in order to prevent the work from falling off the conveyor, the conveyor is lowered again, and then the reference member and the work on the conveyor are moved downward. And the relative distance between the reference member and the end of the roller on the material conveyor is increased by a fixed amount. Then, the workpiece is fed to the cutting machine side by raising and rotating the feeding conveyor again.

Further, when there is a possibility that the workpiece may fall down due to poor straightness or the like, the relative distance between the end of the roller and the reference member in the conveyor may be increased. Positioning is repeatedly performed.

[0014]

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

Referring to FIG. 5 and FIG. 6, as a cutting machine, for example, behind a cutting machine 1 such as a swing-type horizontal band sawing machine (right side in FIG. 6), a material feeding which is a main part of the present embodiment is described. A feeding device 7 including a conveyor 3 and a feeding conveyor 5 is arranged.

More specifically, in order to select a work W to be cut into the cutting machine 1, the material feeding conveyor 3 moves in the X-axis direction (FIG. 6).
In the left-right direction).

A plurality of feed conveyors 5 are arranged at appropriate intervals in the X-axis direction in the Y-axis direction orthogonal to the longitudinal direction of the feed conveyor 3, and the feed conveyor 5 is extended ( A lower material yard 9 is provided on the lower side in FIG. 6).

Although the specific configuration of the cutting machine 1 is already known, a detailed description thereof will be omitted, but it is for cutting the work W into desired dimensions.

Next, the details of the material feeding conveyor 3 will be described with reference to FIGS. FIG. 1 shows the supporting frames 11 and 13
The sliding member 17 is slidably provided in the Y-axis direction on the bracket 15 inclined slightly to the left. The sliding member 17 is rotatably supported by a feed nut 19 and a bracket 15 fixed to the sliding member 17.
1 is slid by the screw 23 rotated.

Further, a lift cylinder 25 and guide members 27a and 27b are fixed on the right and left sides of the slide member 17, and the lift cylinder 25 is vertically moved across a guide plate 31 fixed on the roller conveyor base 29 in front and rear. In addition to guiding, it is guided up and down via sliders 33 attached to the front and rear ends of the roller conveyor base 29. Further, the guide plate 31 is connected to the upper end of the piston rod 25a of the lift cylinder 25.

On the roller conveyor base 29,
The rotatable rollers 37 supported by the support member 35 are arranged at appropriate intervals in the X-axis direction. As shown in FIG. 5, each roller 37 is provided with a plurality of sprockets 39 at appropriate positions, and a chain 41 is wound around the sprockets 39. In addition, as shown in FIGS. 5 and 6, a drive motor 43 is attached, and one of the sprockets 39 is fitted to an output shaft of the drive motor 43. The parts 15 to 43 constitute a roller conveyor type material feeding conveyor 3.

When the drive motor 43 is driven by the above configuration, the sprocket 39 fitted on the output shaft is rotated, and the chain 41 is run and rotated in the X-axis direction (left and right directions in FIGS. 5 and 6). , Each roller 37 is rotated. Therefore, the work W placed on each roller 37 is sent to the cutter, and the remaining material Ws is returned to the feed conveyor 3 side. Each roller 37 can be moved up and down by the lift cylinder 25,
The work W or the remaining material Ws on the rollers 37 can be transferred onto a chain conveyor type supply conveyor 5 described later.

Below the roller 37 in FIG.
A plurality of (eight in the present embodiment) roller-type reference members 45 rotatably supported on a plurality of longitudinal axes are provided at appropriate positions. The reference member 45 plays a role of positioning and guiding when feeding the workpiece W placed on the roller 37 to the cutting machine 1.

Therefore, in order to detect that the workpiece W has come into contact, the vertical axis of the reference member 45 is supported by a hinge pin so as to slightly tilt in the Y axis, that is, the material supply direction. It is designed to sense. The vertical axis is always kept upright by a spring.

As shown in FIG. 6, a kicker 47 is integrally attached to the reference member 45 as a remaining material kicker device, and the kicker 47 serves to push the remaining material Ws to the remaining material yard 9 side. Is fulfilled.

That is, the kicker 47 is mounted on a hinge shaft 49 extending in the X-axis direction. One end of a connecting plate 51 is attached to the hinge shaft 49, and the other end of the connecting plate 51 has a piston. The distal end of a rod 53a is connected, and a cylinder 53 that expands and contracts the piston rod 53a is supported by a support frame 55 via a bracket 57.

When the cylinder 53 is operated to contract the piston rod 53a in FIG. 6, the hinge shaft 49 rotates counterclockwise, so that the kicker 47 and the reference member 45 are rotated. become.

Each feeding conveyor 5 cuts the work W into the cutting machine 1
A plurality of chain conveyors 59 that constitute a part of the feeder conveyor 5 at appropriate intervals in the X-axis direction that is the direction in which the feeders are fed to the side
Are provided in the Y-axis direction orthogonal to the material feeding direction of the material feeding conveyor 3. Each chain conveyor 59 is supported by the support frame 55 and the support frame 61.

A sprocket 63 and a driven support member 65 are provided on the upper and lower sides (left and right sides in FIG. 1) of the support frames 55 and 61 on the right side in FIG. 6, and the sprocket 63 and the driven support member 65 are provided. , A chain 67 is wound. Further, a shaft 69 extending in the X-axis direction is mounted on the axis of the sprocket 63. A pulley 71 is fitted on the shaft 69, and a drive motor 73 is supported on the support frame 55. Another pulley 75 is attached to the output shaft of the drive motor 73, and the pulley 75 and the pulley 71 are wound around a belt 77.

With the above configuration, when the drive motor 73 is driven, the shaft 69 is rotated via the pulley 75, the belt 77, and the pulley 71. When the shaft 69 is rotated, the churn 67 wound around the sprocket 63 and the driven support member 65 is rotated, whereby the chain 6 is rotated.
7 is rotated in the Y-axis direction.

The work W to be cut is placed on the chain conveyor 59 with a crane, a fork or the like, and the work W is moved to the material feeding conveyor 3 by rotating the chain conveyor 59.

The remaining material yard 9 is provided with the material conveyor 3
Is disposed on an extension (lower side in FIG. 6) of the feed conveyor 5 in the Y-axis direction orthogonal to the X-axis direction of
Support frames 79 and 81 are provided below the support frame 61 in FIG. This support frame 7
Above 9, 81, a plurality of chain conveyors 83 are provided at appropriate intervals in the X-axis direction.

A plurality of sprockets 85 are provided on the lower side of the support frame 81 in FIG. 6, and a shaft 87 extending in the X-axis direction is mounted on the axial center of these sprockets 85. A pulley is fitted on the shaft 87 and is driven to rotate by a drive motor 89 supported on a support frame 81.

With the above configuration, when the drive motor 89 is driven, the chain conveyor 83 is rotated in the Y-axis direction.

Accordingly, the remaining material Ws cut by the cutting machine 1 to the material feeding conveyor 3 is returned, and the remaining material Ws placed on the chain conveyor 59 which is a part of the material feeding conveyor 5 is removed by the kicker. It is kicked out by 47 and further fed onto the chain conveyor 83 to abut against the stopper member 91 to be temporarily stored.

Next, the operation in which the workpiece W is fed to the cutting machine 1 after the workpiece W is placed on the material supply device 7 will be described. First, in FIG. W ₁ . W ₂ , W ₃ , W ₄ , W ₅ , and W ₆ are placed on a crane or a fork or the like, and when the chain conveyor 59 rotates, for example, counterclockwise, the chain conveyor 59 moves to the left, and eventually contacts the roller-type reference member 45. Or the workpiece W ₁ for example, the reference member 45 is in contact with the vertical axis of the reference member 45 as described above by tilting from the upright state, the limit switch is detected confirmed so switched.

The reference member 45 is, as shown in FIG. 6, but for example, are eight provided, regarded as the work W ₁ at least two of the reference member 45 upon detecting that abuts the workpiece W ₁ is aligned To stop the chain conveyor 59. The information on the work W is input in advance to an NC control device mounted on the cutting machine 1.

As described above, since the work W ₁ is in contact with the reference member 45 and the roller 37 is fixed to the roller conveyor base 29 via the support member 35, the roller conveyor base 29 is moved in the Y-axis by the servomotor 21. In the Z-axis direction by the lift cylinder 25, the material conveyor 3 moves accordingly. Thus movement, in a state where the workpiece W ₁ is in contact with the reference member 45, lonely shown in FIG. 2 (A), the roller 37 of Okuzai conveyor 3 is the Y-axis direction lower than the height of the upper surface of the chain conveyor 59 Positioned. The distance from the left end (the right end face in FIGS. 2 and 1) of the moved and positioned roller 37 to the contact surface of the reference member 45, that is, the feeding amount X of the feeding roller is determined by X = α · We (α). : constants set by such maximum diameter of the workpiece to be fed material, We: the width of the workpiece W _1).

Next, as shown roller 37 in FIG. 2 (B), lifting the only work W ₁ to be cut raised in the Z-axis direction. In this state, the chain conveyor 59 is rotated rightward by, for example, B = δ, and the interval between the workpieces W ₁ and W ₂ is spaced by δ as shown in FIG. 2B.
(FIG. 2B shows the retreat amount of the chain conveyor 59.)
The interval δ is for preventing the workpiece W ₁ to be fed and the adjacent workpiece W ₂ from rubbing. The interval δ is detected by a known detection device such as an encoder.

[0040] Incidentally, if the width dimension of the workpiece W ₁ We is small, when to rotate the rollers 37 of the feed material conveyor 3 in a state described above will be Okuzai the workpiece W ₁ to the cutting machine 1 side, 2 As shown in (C), since the dimension of the above expression X = α · We is small, the rollers 37 of the material feeding conveyor 3 are used during material feeding.
It is easy to fall accidents. In general, a work having a small width dimension We has a large bending in the longitudinal direction, and thus tends to further promote a fall accident.

Therefore, in order to solve the above problem,
Movement when the width dimension of the workpiece W ₁ We is equal to or less than a predetermined value M as shown in FIG. 3, once the roller 37 is lowered as shown in FIG. 2 (D), the example constant value C again only the roller 37 to the right It is repositioned. Therefore, its position is Xa = α
・ We + C (Xa is the re-moving positioning position).

These relationships are clearly illustrated in FIG. The 3, since if the width of the workpiece W ₁ We are round bar can be expressed by the diameter D, takes the diameter D ₁ of the workpiece _{W 1, D 2, D 3} ... on the horizontal axis, these Is a drawing in which the vertical axis represents the feed roller swing-out amounts X ₁ , X ₂ , X ₃ .

According to FIG. 3, when the diameter D of the work W ₁ is larger than the fixed value D _M , the feed roller swing amount X
Is related by the above-mentioned expression X = α · We (or X = α · D), and is displayed as a straight line on the upper right with a constant inclination.

[0044] However, the diameter D of the workpiece W ₁ is a constant value D
If it is smaller than _M , re-positioning of the material feeding roller is performed, and the feeding amount of the material feeding roller is increased by a fixed amount C, that is, Xa = α · We + C (or Xa = α · D + C). Although the inclination is the same in the relationship in FIG. This straight line continues up to Xs corresponding to the minimum diameter Ds of the work W that can be cut by the cutting machine 1.

As described above, even when the diameter of the workpiece W ₁ to be fed is smaller than the fixed value D _M , the feed roller swing amount X is re-moved and positioned to increase the fixed amount C by X.
By the a, the workpiece W ₁ in Okuzai in Okuzai conveyor 3, it is prevented that fall from the roller 37.
But for example, especially for large workpiece W ₁ of the bend, so that even there may be necessary to further increase the modified Okuzai roller swung amount Xa occurs, the above re-moving the positioning operation is not limited to only once.

[0046] Thus, when re-moving and positioning the rollers 37, in order to separate the the workpiece W ₁ and the workpiece W ₂ adjacent, is reversely rotated to retract by beta = [delta] a chain conveyor 59 as previously described Sometimes, for example, Ba = δ in advance
+ C, the workpiece W ₂
There leave so as not to contact with the workpiece W _1. Since the information on the work W is input to the NC control device as described above, the above operation is easily performed.

Next, the rollers 37 of the material feeding conveyor 3 are raised again by the lift cylinder 25 and the drive motor 4
3 roller 37 of the feed material conveyor 3 is rotated by the to rotate, so that the workpiece W ₁ is Okuzai the cutting machine 1 side.

As described above, since the partition bar is not provided on the chain conveyor 59 of the material supply conveyor 5, the work W does not hit the partition bar when the work W is placed on the chain conveyor 59. There is no damage to the bar or the work W. FIG.
Various types such as large diameter,
Since the works W can be placed side by side with no gap irrespective of the small diameter, it is possible to effectively use the space and to cope with the case where the work is a round material or a square material.
Further, even if the width We of the workpiece W ₁ to be cut is less than the predetermined value M, since performing again the movement positioning of the rollers 37 of Okuzai conveyor 3, the workpiece W ₁ is falling from the roller 37 at Okuzai Such an accident does not occur.

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

For example, in the above description, the material conveyor 3 is moved in the Y-axis direction and the Z-axis direction. However, the material conveyor 3 is moved only in the Z-axis direction and not moved in the Y-axis direction. the rollers of the reference member 45 to be moved in the Y-axis direction, may be able to position according to the width of the workpiece W _1. In this case, it is necessary to incline the roller 37 at a slight angle by slightly lowering the roller side of the reference member 45 in advance.

[0051] That is, after the workpiece W ₁ is in contact with the reference member 45 in this case, to move the reference member 45 in the Y-axis direction. Next, when the roller 37 is raised, the roller 37
In contact with the rollers of the reference member 45 work W ₁ is I rolling because is inclined, the distance δ between the workpiece W ₁ and the workpiece W ₂ of the adjacent drilled.

[0052]

As will be understood from the above description of the embodiment, according to the present invention, the workpieces are sequentially arranged on the feeding conveyor without gaps, and the reference member provided on one side of the feeding conveyor is provided. The work comes into contact. Therefore, various works, for example, regardless of the large diameter and the small diameter, can be arranged without gaps on the material feeding conveyor.
It is possible to effectively use the space of the material supply yard, and to cope with the case where the work is a round material or a square material.

If the width of the work to be fed on the feeding conveyor is smaller than a certain value, the feeding conveyor is lowered again and the relative position with respect to the reference member is shifted by a certain amount. After moving in the direction opposite to the feeding direction and re-positioning, raise the feeding conveyor again,
Since the work to be fed is sent to the cutting machine by rotating the material feeding conveyor, the work can be prevented from falling off from the material feeding conveyor during the material feeding.

[Brief description of the drawings]

FIG. 1 is a view taken in the direction of arrow 1-1 in FIG.

FIG. 2 is an explanatory diagram showing a relationship between a width dimension of a work to be fed and a feed-out roller feeding amount.

FIG. 3 is a diagram showing a feed roller swing amount corresponding to a width dimension of a work to be fed.

4 is a partial sectional view taken along the line IV-IV in FIG. 6;

FIG. 5 is a sectional view taken along the line VV in FIG. 6;

FIG. 6 is a plan view of one embodiment of a material supply device in the cutting machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cutting machine 3 Feeding conveyor 5 Feeding conveyor 7 Feeding device 37 Roller 45 Reference member W Work

Claims (2)

(57) [Claims] When a workpiece is fed to a cutting machine from a feeding device configured by a feeding conveyor and a feeding conveyor provided on one side of a cutting machine, the workpiece is orthogonal to a feeding direction of the workpiece. The desired workpieces are sequentially arranged without gaps on the material feeding conveyor arranged in the direction in which the workpieces are placed, and the workpiece is brought into contact with a reference member provided on one side of the material feeding conveyor to perform the reference setting. After relative positioning in the feeding direction between the material feeding conveyor and the reference member according to the width dimension, the material feeding conveyor is raised, and the work is placed on the material feeding conveyor, and then the adjacent workpiece is moved. When the width of the work placed on the feed conveyor is smaller than a predetermined value after the feed conveyor is reversed at an interval where the work is not in contact with the feed, the work is prevented from falling off from the feed conveyor. For the material conveyor Is lowered again, and the distance between the reference member and the work on the material feeding conveyor and the relative distance between the reference member and the end of the roller on the material feeding conveyor are increased by a fixed amount. After doing
A feeding method in a cutting machine, wherein the work is conveyed to the cutting machine side by raising and rotating the feeding conveyor again. 2. A feeding method in a cutting machine according to claim 1, wherein the positioning of increasing the relative distance between said feeding conveyor and said reference member is repeated a plurality of times. .