JP6925617B2 - Cutting device - Google Patents

Description

The present invention relates to a cutting device, and more particularly to a cutting device capable of improving versatility.

The work piece transported by the transport path is cut by a cutting means (for example, a circular saw or a slitter), and the work piece left as a result of the cutting is returned to the upstream side of the transport path (residual material by the cutting means). The technique of disconnecting again) is known. For example, Patent Document 1 includes a return roller configured to be able to move up and down between a plurality of feed rollers facing each other, and the return roller lifts the residual material to a position higher than the feed roller and returns it to the upstream side. Is disclosed. According to this band saw machine, the residual material can be lifted to a position higher than the feed roller by the return roller, so that the residual material can be prevented from interfering with the feed roller. Therefore, the residual material can be returned to the upstream side in the transport path of the workpiece (in the region where the feed roller is arranged).

Jikkai Sho 57-18503 (for example, page 5, line 4 to page 6, line 16, FIGS. 1 and 2)

However, in the above-mentioned conventional technique, the workpiece is cut to a predetermined (constant) width dimension, and the return roller is arranged at a position corresponding to the width dimension. Therefore, for example, the width dimension of the product (workpiece). If the cutting dimension of the work piece is longer than the specified value, raising the return roller causes the return roller to interfere with the product. Further, when the width dimension of the product is shorter than a predetermined value, the width dimension of the residual material becomes longer than the width dimension of the return roller, so that the residual material may fall from the return roller. That is, there is a problem that the versatility is low because the cutting size of the work piece is restricted.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a cutting device capable of improving versatility.

In order to achieve this object, the cutting device of the present invention cuts a plurality of transport means juxtaposed along a transport path of a work piece and the work piece transported by the plurality of transport means. and means, and returning means for returning in the opposite direction to the conveying direction of the conveying means a remaining material of the workpiece is cut by the cutting means, the said return means, between the opposite of each other the conveying means in a shall be returned the remaining material of the workpiece between opposing each other said conveyor means while lifting the cutting means, variably configured cut dimension of the workpiece in the width direction of the conveying path The return means is provided with a plurality of first return means that are displaced in the width direction of the transport path.

According to the cutting device according to claim 1, since the cutting means is configured to have a variable cutting dimension of the workpiece in the width direction of the transport path, the width dimension of the residual material changes according to the change of the cutting dimension. do. In this case, since the return means includes the first return means that is displaced in the width direction of the transport path, even if the width dimension of the residual material changes, the first return means is changed to the width of the transport path according to the width dimension. It can be displaced in the direction. That is, by displacing the first return means at a position that matches the width dimension of the residual material (a position where the residual material can be supported and the first return means does not interfere with the product), the first return means of the first return means. It is possible to prevent the first return means from interfering with the product when ascending, and to prevent the residual material from falling from the first return means when the residual material is returned. Therefore, since the workpiece can be cut with various width dimensions, there is an effect that the versatility of the cutting device is improved.

According to the cutting device according to claim 2, in addition to the effect of the cutting device according to claim 1, the return means includes a second return means fixed in the width direction of the transport path, so that the return means of the transport path. By displacing the first return means at a position separated from the second return means in the width direction, the residual material having a width dimension longer than the size of the first return means in the width direction of the transport path is removed from the first return means and the second return means. It can be returned (supported) by the return means. Therefore, since the first return means can be miniaturized, there is an effect that the product cost of the cutting device can be reduced.

According to the cutting device according to claim 3, in addition to the effects of the cutting device according to claim 2, the following effects are obtained. The second return means is arranged at a position deviating from the displacement locus of the first return means in the width direction of the transport path, and the first return means and the second return means are individually configured to be able to move up and down. As a result, the first return means can be displaced to the outside in the width direction of the transport path with respect to the second return means, and only the first return means can be raised. Therefore, even if the width dimension of the product interferes with the second returning means, there is an effect that the residual material can be returned by the first returning means.

According to the cutting device according to claim 4, in addition to the effect of the cutting device according to claim 2, the first return means and the second return means are arranged so as to face each other in the width direction of the transport path. The space for arranging the first return means and the second return means in the transport direction can be reduced. Therefore, there is an effect that the cutting device can be miniaturized.

According to the cutting device according to claim 5, in addition to the effect of the cutting device according to any one of claims 1 to 4, the following effects are obtained. The plurality of first return means constitutes a first set that supports one end side of the residual material in the width direction of the transport path and a second set that supports the other end side, and constitutes the first set. The means and the first return means constituting the second set are individually configured to be displaceable in the width direction of the transport path. As a result, the first return means constituting the first set can be displaced to one end side in the width direction of the residual material, and the first return means constituting the second set can be displaced to the other end side in the width direction of the residual material. Therefore, both ends of the residual material in the width direction can be supported by the first return means. Therefore, even when the width dimension of the residual material is longer than the dimension of the first return means in the width direction of the transport path, the effect that the residual material can be stably returned (supported) by the first return means. There is.

It is a partially enlarged plan view of the cutting apparatus in 1st Embodiment of this invention. (A) is a partially enlarged side view of the cutting device in the direction of arrow IIa of FIG. 1, and (b) is a cutting device showing a state in which the return roller and the holding roller are raised from the state of FIG. 2 (a). It is a partially enlarged side view of. (A) is a partially enlarged plan view of a cutting device showing a state in which a plate material is cut, and (b) is a part of a cutting device showing a state in which the residual material generated during cutting in FIG. 3 (a) is cut. It is an enlarged plan view. (A) is a partially enlarged plan view of a cutting device showing a state in which a plate material is cut by the cutting device of the second embodiment, and (b) is a cut of a residual material generated at the time of cutting in FIG. 4 (a). It is a partially enlarged plan view of the cutting device which shows the state which was done. (A) is a partially enlarged plan view of a cutting device showing a state in which the first return roller is displaced outward in the width direction from the second return roller, and (b) is a partially enlarged plan view of the cutting device, and (b) raises the first return roller and the presser roller. It is a partially enlarged side view of the cutting device which shows the state which made it made. (A) is a partially enlarged plan view of a cutting device showing a state in which a plate material is cut by the cutting device of the third embodiment, and (b) is a cut of a residual material generated at the time of cutting in FIG. 6 (a). It is a partially enlarged plan view of the cutting device which shows the state which was done.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. First, the overall configuration of the cutting device 1 will be described with reference to FIGS. 1 and 2. FIG. 1 is a partially enlarged plan view of the cutting device 1 according to the first embodiment of the present invention. FIG. 2A is a partially enlarged side view of the cutting device 1 in the direction of arrow IIa of FIG. 1, and FIG. 2B shows the return roller 4 and the pressing roller 5 being raised from the state of FIG. 2A. It is a partially enlarged side view of the cutting device 1 which shows the state which made it made.

In addition, in FIGS. 1 and 2, in order to simplify the drawing, a part of the cutting device 1 is omitted and schematically shown, and in FIG. 2, a part of the invisible part of the cutting device 1 is shown. Is illustrated by a broken line. Further, the lower end of the blade portion 60a is located below the upper end of the transport roller 3, but in FIG. 2, the lower end of the blade portion 60a and the upper end of the transport roller 3 are the same in order to simplify the drawing. Illustrated by height.

As shown in FIG. 1, the cutting device 1 includes a pair of frames 2 extending along the transport direction (left-right direction of FIG. 1) of the workpiece (plate material P in the present embodiment, see FIG. 3). , A plurality of transport rollers 3 are axially supported by the pair of frames 2 and arranged side by side in the transport direction, and are arranged between the plurality of transport rollers 3 facing each other (opposite spaces in a plan view). A plurality of return rollers 4, a pair of pressing rollers 5 arranged to face each other in the vertical direction (vertical direction on the paper surface in FIG. 1) with respect to the conveying roller 3, and a pair of pressing rollers 5 facing each other (opposing in the conveying direction). It is a cutting device for cutting a flat plate-shaped plate material P (see FIG. 3) made of wood, which comprises a cutting portion 6 arranged in the space (between).

In a plan view, the direction orthogonal to the transport direction of the plate material P (vertical direction in FIG. 1) is defined as the "width direction" of the cutting device 1, and the dimensions of each member in the "width direction" are defined as "width dimensions". However, the same shall apply in the following description.

A pair of frames 2 are arranged to face each other at predetermined intervals in the width direction, and a plurality of transport rollers 3 are arranged between the pair of frames 2 facing each other. The plurality of transfer rollers 3 are transfer rollers that are rotationally driven by a drive source (not shown). The transport roller 3 is arranged in a posture in which its rotation axis is oriented in the width direction, and is configured to be rotatable (normal rotation) in the rotation direction for transporting the plate material P to the downstream side (right side in FIG. 1).

The return roller 4 is a return roller including a roller portion 40 that is rotationally driven by a drive source (not shown) and a pair of support portions 41 on which the roller portion 40 is pivotally supported. The roller portion 40 is arranged in a posture in which its rotation axis is directed in the width direction, and is configured to be rotatable (reverse) in the rotation direction for transporting the plate material P to the upstream side (left side in FIG. 1). Further, the width dimension of the roller portion 40 (600 mm in this embodiment) is formed shorter than the width dimension of the transport roller 3 (1350 mm in this embodiment).

As shown in FIG. 2, the support portion 41 of the return roller 4 is arranged so as to extend downward from the roller portion 40. In the plurality of return rollers 4, the support portions 41 are connected to each other by a first connecting member (not shown) (for example, a plate-shaped frame) on the lower side (lower side of FIG. 2) than the roller portion 40. .. That is, the first connecting member is provided at a position where it does not interfere with the transport roller 3 when the return roller 4 is raised, and the first connecting member is NC-controlled by a control device (not shown) in the vertical direction and width. It is configured to be displaceable in the direction.

Therefore, the plurality of return rollers 4 are integrally configured to be displaceable in the vertical direction and the width direction (relatively displaceable with respect to the transport roller 3) (see FIG. 3 for the displacement in the width direction). ). Further, when the return roller 4 is raised, the upper end of the support portion 41 is positioned below the upper end of the transfer roller 3. As a result, the support portion 41 interferes with the product Pa when the return roller 4 is raised (when the upper end of the roller portion 40 of the return roller 4 is positioned above the upper end of the transfer roller 3 when the residual material Pb is returned). Can be suppressed.

The pair of pressing rollers 5 are rollers for sandwiching the plate material P together with the conveying roller 3, respectively. Of the plurality of transfer rollers 3, the pressing rollers 5 are arranged on the upper surface side (upper side of FIG. 2) of each of the pair of transfer rollers 3 arranged on the upstream side and the downstream side of the cutting portion 6. The presser roller 5 includes a roller portion 50 that sandwiches the plate material P from the upper surface side of the transport roller 3, and an elevating portion 51 that raises and lowers the roller portion 50 in the vertical direction (vertical direction in FIG. 2).

The roller portion 50 is arranged in a posture in which its rotation axis is oriented in the width direction (vertical direction on the paper surface in FIG. 2), and is pivotally supported with respect to the elevating portion 51 so as to rotate. The elevating portions 51 are fixed to the upper surfaces of the pair of frames 2, respectively, and the elevating operation of the roller portion 50 by the elevating portions 51 is controlled by a control device (not shown). By raising the roller portion 50 by the elevating portion 51, it is possible to prevent the roller portion 50 from interfering with the residual material Pb (see FIG. 3A) when the return roller 4 is raised.

The cutting portion 6 includes a plurality of (four in the present embodiment) circular saws 60 for cutting the plate material P, and a main body portion 61 for holding the plurality of circular saws 60. The circular saw 60 includes a blade portion 60a formed as a disk-shaped saw and a drive portion 60b for rotationally driving the blade portion 60a, and two circular saws 60 are provided on both the upstream side and the downstream side with the main body portion 61 interposed therebetween. It is arranged one by one.

The blade portion 60a is arranged with its rotation axis oriented in the width direction, and the lower end of the blade portion 60a is located below the upper end of the transport roller 3 (that is, the transport surface of the plate material P). Therefore, the plate material P transported by the transport roller 3 is cut along the transport direction by the circular saw 60.

The main body 61 is arranged so as to be erected on a pair of frames 2 in the width direction. The main body 61 includes a holding portion 61a that slidably holds the driving portion 60b of the circular saw 60 in the width direction and extends along the width direction (see FIG. 1). The slide displacement of the drive unit 60b with respect to the holding unit 61a is controlled by NC control of a control device (not shown), and the plurality of circular saws 60 are individually configured to be displaceable in the width direction. Therefore, the cutting dimensions (width dimensions of the product Pa and the residual material Pb) in the width direction of the plate material P can be changed by changing the facing distance between the blade portions 60a of each circular saw 60 (see FIG. 3). ).

Next, a method of cutting the plate material P will be described with reference to FIG. FIG. 3A is a partially enlarged plan view of the cutting device 1 showing a state in which the plate material P is cut, and FIG. 3B is a cut of the residual material Pb generated during cutting in FIG. 3A. It is a partially enlarged plan view of the cutting device 1 which shows the state. In FIG. 3, in order to simplify the drawing, the reference numerals of the roller portion 40 and the support portion 41 are omitted, and a part of the invisible portion of the cutting device 1 is shown by a broken line. Further, in FIG. 3, the plate material P and the residual material Pb before cutting are shown by a two-dot chain line.

As shown in FIG. 3, the blade portions 60a of the circular saw 60 are arranged at equal intervals from the frame 2 on one side in the width direction (lower side of FIG. 3A) of the pair of frames 2 and are rotationally driven. In a state where the plate material P is placed on the transport roller 3 (placed along the frame 2 on one side in the width direction), the transport roller 3 is rotated in the normal direction (the plate material P is transported from the upstream side to the downstream side of the cutting portion 6). ), The plate material P is cut along the transport direction. Since the plate material P is cut by the four blade portions 60a arranged at equal intervals from the frame 2, four product Pas are produced and one residual material Pb is formed.

Next, the return roller 4 is moved in the width direction, and the return roller 4 (roller portion 40) is raised while being arranged at a position matching the width dimension of the residual material Pb (displaced upward relative to the transport roller 3). ) Therefore, the residual material Pb can be lifted by the return roller 4. At this time, by raising the return roller 4 to a height at which the support portion 41 does not interfere with the product Pa, the return roller 4 (support portion 41) can lift the residual material Pb without interfering with the product Pa.

The position according to the width dimension of the residual material Pb is a position where the return roller 4 (roller portion 40) can support the residual material Pb, and the return roller 4 (roller portion 40) does not interfere with the product Pa. The position. Therefore, for example, the end of the roller portion 40 on one side in the width direction (lower side of FIG. 3A) may be aligned with the end of the residual material Pb in the width direction, or the width direction of the residual material Pb. The return roller 4 may be raised with the roller portion 40 positioned at a position slightly shifted (for example, 20 mm) from the end portion on one side to the other side. As a result, the return roller 4 can lift the residual material Pb without the return roller 4 interfering with the product Pa.

By reversing the return roller 4 with the residual material Pb lifted and rotating the transport roller 3 in the normal direction, the residual material Pb is returned to the upstream side (left side in FIG. 3A) while the product Pa is downstream. It can be transported to the side (right side in FIG. 3A). Therefore, the return of the residual material Pb and the transportation of the product Pa can be performed at the same time in the transport path of the plate material P. Further, since the residual material Pb can be returned to the upstream side of the cutting portion 6 by the return roller 4, the residual material Pb can be cut again by the cutting portion 6.

That is, by using five or more circular saws 60, it is possible to produce the product Pa without generating the residual material Pb by cutting the plate material P once, but the cutting device 1 of the present embodiment. According to the above, the product Pa can be produced in a plurality of times by cutting the plate material P a plurality of times. Therefore, even if the processing capacity in the post-process of the cutting device 1 (for example, cutting in the width direction of the product Pa by another cutting device) is lower than that in the cutting device 1, the processing capacity is adjusted to the processing capacity of the post-process. The product Pa can be produced by the cutting device 1.

Further, since the return roller 4 is configured to be movable in the width direction, the return roller 4 can be displaced to the other side in the width direction after the return roller 4 is lifted by the residual material Pb. As a result, the return roller 4 can be displaced in the direction away from the circular saw 60 in the width direction, so that the residual material Pb interferes with the circular saw 60 (blade portion 60a) when the residual material Pb is returned. Can be suppressed. Therefore, for example, it is not necessary to provide the circular saw 60 with an elevating function for avoiding interference with the residual material Pb, so that the product cost of the cutting device 1 can be reduced.

Here, as shown in FIG. 3B, the blade portions 60a at the time of the second cutting (when the residual material Pb is cut) than at the time of the first cutting of the plate material P (see FIG. 3A). By setting the facing distance in the width direction to be narrow (or wide), the width dimension of the product Pc can be shortened (or long). In this case, the position (width dimension) of the residual material Pd generated in the second cutting changes in the width direction as compared with the residual material Pb in the first cutting because the width dimension of the product Pc changes from the product Pa. Further, for example, when the width dimension of the product Pa at the time of cutting a new plate material to be processed next to the plate material P is different from that at the time of cutting the plate material P (see FIG. 3A), similarly, at the time of cutting. The position (width dimension) of the generated residual material Pb in the width direction changes.

On the other hand, in the present embodiment, since the return roller 4 can be displaced in the width direction, even if the positions (width dimensions) of the residual materials Pb and Pd generated at the time of cutting change, the return roller 4 is returned according to the change. The roller 4 can be displaced in the width direction. That is, by displace the return roller 4 according to the position (width dimension) where the residual materials Pb and Pd are generated, the return roller 4 interferes with the products Pa and Pc when the return roller 4 rises, and the residual material Pb, It is possible to prevent the residual materials Pb and Pd from falling from the return roller 4 when the Pd is returned. Therefore, when cutting the plate material P, the residual material Pb, or a new plate material to be processed next to the plate material P, it is possible to cut with different cutting dimensions, so that the versatility of the cutting device 1 is improved.

Here, for example, in order to arrange the return rollers 4 according to the positions (width dimensions) where the residual materials Pb and Pd are generated, a configuration is adopted in which a plurality of return rollers 4 are individually displaced in the width direction by NC control. It is also possible. However, in such a configuration, since it is necessary to provide a drive source for each of the plurality of return rollers 4, the product cost of the cutting device 1 increases.

On the other hand, in the present embodiment, since the support portions 41 of the plurality of return rollers 4 are connected to each other by the first connecting member (not shown), the plurality of return rollers 4 are connected in the width direction with respect to the first connecting member. If a driving force is applied, the plurality of return rollers 4 can be integrally displaced in the width direction. Therefore, for example, since the plurality of return rollers 4 can be displaced in the width direction by the drive source of 1, the product cost of the cutting device 1 is reduced.

Next, a second embodiment will be described with reference to FIGS. 4 and 5. In the first embodiment, the case where the return roller 4 is configured to be displaceable in the width direction has been described, but the return roller of the second embodiment includes the first return roller 204a which is configured to be displaceable in the width direction. It is composed of a second return roller 204b that is fixed in a non-displaceable manner in the width direction. The same parts as those in the second embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 4A is a partially enlarged plan view of the cutting device 201 showing a state in which the plate material P is cut by the cutting device 201 of the second embodiment, and FIG. 4B is the cutting in FIG. 4A. It is a partially enlarged plan view of the cutting apparatus 201 which shows the state which the residual material Pb generated sometimes was cut. FIG. 5A is a partially enlarged plan view of the cutting device 201 showing a state in which the first return roller 204a is displaced outward in the width direction from the second return roller 204b, and FIG. 5B is a first It is a partially enlarged side view of the cutting apparatus 201 which shows the state which raised the return roller 204a and the presser roller 5.

In addition, in FIGS. 4 and 5, in order to simplify the drawing, a part of the cutting device 201 is not shown, is shown schematically, and the reference numerals of the roller portion 40 and the support portion 41 are omitted. .. Further, in FIGS. 4 and 5, a part of the invisible portion of the cutting device 201 is shown by a broken line, and the plate material P and the residual material Pb before cutting are shown by a two-dot chain line.

As shown in FIG. 4, the cutting device 201 includes a first return roller 204a and a second return roller 204b arranged between a plurality of transport rollers 3 facing each other in a plan view. The return roller 204a has a return roller 4 except that the width direction dimension (300 mm in the present embodiment) of the roller portion is shorter than the width direction dimension (600 mm) of the roller portion 40 of the first embodiment. It has the same configuration as.

The second return roller 204b has the same configuration as the first return roller 204a, except that the arrangement position is different and the second return roller 204b is fixed in a non-displaceable manner in the width direction. That is, the support portions of the plurality of second return rollers 204b are each connected by a second connecting member (for example, a plate-shaped frame), and the second connecting member is NC-controlled by a control device (not shown). By doing so, it can be displaced only in the vertical direction.

The second return roller 204b is located close to the frame 2 located on the other side of the pair of frames 2 in the width direction (upper side of FIG. 4A) (for example, separated by 50 mm in the width direction). Arranged. Therefore, by displace the first return roller 204a toward one side in the width direction (lower side in FIG. 4A), the residual material Pb having a width dimension longer than the dimension of the first return roller 204a in the width direction can be obtained. It can be returned (supported) by the first return roller 204a and the second return roller 204b.

As a result, the first return roller 204a can be miniaturized, so that, for example, the driving force required to displace the first return roller 204a (first connecting member) in the width direction can be reduced. Therefore, the number of drive sources (for example, drive motors and actuators) can be reduced and the size can be reduced, so that the product cost of the cutting device 201 can be reduced.

Further, the position of the residual material Pd generated at the time of the second and subsequent cutting (when the residual material Pb is cut) with respect to the plate material P of 1 changes in the width direction (see FIG. 4B), and is supported by the second return roller 204b. Even if the residual material Pd is generated at a position where the residual material Pd cannot be supported, the residual material Pd can be returned by the first return roller 204a by displacing the first return roller 204a to a position where the residual material Pd can be supported.

Here, for example, in the case of a configuration in which the residual material is returned by a row of return rollers 4 along the transport direction as in the cutting device 1 of the first embodiment, the width is required to stably support the residual material. It is necessary to form the size of the return roller in the direction to be relatively long (for example, a size longer than the expected width size of the residual material). In this case, if the width dimension of the return roller is formed long, the residual material can be stably supported, but if the width dimension of the return roller is formed long, the width dimension of the product is restricted by that amount (the product and the return roller). Because it is necessary to form the product with a dimension obtained by subtracting the width dimension of the return roller from the width dimension of the transport roller 3 in order to avoid interference with the transfer roller 3).

On the other hand, in the present embodiment, since the first return roller 204a that is displaced in the width direction and the second return roller 204b that is fixed to the end side in the width direction of the transport path are provided, the first return roller 204a and Even if the width dimension of the second return roller 204b (the total width dimension of the first return roller 204a and the second return roller 204b) is formed to be relatively short, the remaining material is formed by the first return roller 204a and the second return roller 204b. Both ends of Pb in the width direction can be stably supported. That is, by forming the width dimension of the first return roller 204a and the second return roller 204b relatively short (for example, a dimension shorter than the width dimension of the residual material Pb), the product is formed with a longer width dimension. It is possible to return the residual material in a stable manner while making it possible.

In this case, for example, both the first return roller 204a and the second return roller 204b can be displaced in the width direction in order to support the residual material Pb having a width dimension longer than that of the first return roller 204a and the second return roller 204b. It is also possible to configure in. However, in such a configuration, it is necessary to provide a drive source for displacement in the width direction in each of the first return roller 204a and the second return roller 204b, which increases the product cost.

On the other hand, in the present embodiment, only the first return roller 204a is configured to be displaceable in the width direction, so that the number of drive sources can be reduced accordingly. Therefore, the product cost of the cutting device 201 can be reduced.

As shown in FIG. 5, when the product Pa is cut to a size that interferes with the second return roller 204b, the second return roller 204b may come into contact with the product Pa when the second return roller 204b is raised. .. That is, since the second return roller 204b is fixed in a non-displaceable manner in the width direction, when the product Pa interferes with the second return roller 204b, the residual material Pb cannot be returned by the second return roller 204b.

On the other hand, in the present embodiment, the second return roller 204b is arranged at a position deviating from the displacement locus of the first return roller 204a in the width direction, so that the first return roller 204a is moved from the second return roller 204b. Can also be displaced to the other side in the width direction (upper side in FIG. 5A).

Further, since the first return roller 204a and the second return roller 204b are connected by different connecting members (first connecting member and second connecting member) (not shown), the first return roller 204a and the second return roller 204a are connected. The return rollers 204b can be raised and lowered individually (only the first return roller 204a can be raised) (see FIG. 5B). As a result, even when the width dimension of the product Pa interferes with the second return roller 204b, the residual material Pb can be lifted by the first return roller 204a and returned to the upstream side.

Here, for example, the second return roller is located at a position as close as possible to the frame 2 on the other side in the width direction (upper side of FIG. 5A) of the pair of frames 2 (for example, separated by 10 mm in the width direction). By disposing 204b, it is possible to form the width dimension of the product Pa longer. In this case, the width dimension of the roller portion of the first return roller 204a may be made shorter than the width dimension of the roller portion of the second return roller 204b.

As a result, the first return roller 204a can be displaced to the outside in the width direction with respect to the second return roller 204b. That is, by forming the width dimension of the first return roller 204a shorter than the width dimension of the second return roller 204b, the second return roller 204b is prevented from interfering with the product Pa, and the second return roller 204b is tentatively formed. Can interfere with the product Pa, but the residual material Pb can be returned by the first return roller 204a.

Next, a third embodiment will be described with reference to FIG. In the second embodiment, the case where the second return roller 204b is fixed in a non-displaceable manner in the width direction has been described, but in the third embodiment, the case where the second return roller 304b is configured to be displaceable in the width direction is used. explain. The same parts as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 6A is a partially enlarged plan view of the cutting device 301 showing a state in which the plate material P is cut by the cutting device 301 of the third embodiment, and FIG. 6B is the cutting in FIG. 6A. It is a partially enlarged plan view of the cutting apparatus 301 which shows the state which the residual material Pb generated sometimes was cut. In FIG. 6, in order to simplify the drawing, a part of the cutting device 301 is not shown, is shown schematically, and the reference numerals of the roller portion 40 and the support portion 41 are omitted. Further, in FIG. 6, a part of the invisible portion of the cutting device 301 is shown by a broken line, and the plate material P and the residual material Pb before cutting are shown by a two-dot chain line.

As shown in FIG. 6, the cutting device 301 includes a second return roller 304b arranged between a plurality of transport rollers 3 facing each other in a plan view. The second return roller 304b is configured to be displaceable in the width direction (the second connecting member connecting the support portions 41 of the second return roller 304b is NC-controlled by a control device (not shown). It has the same configuration as the second return roller 204b of the second embodiment except that it is configured to be displaceable in the width direction and the vertical direction).

Here, in the case of the configuration in which the second return roller 204b is fixed on the other side in the width direction of the transport path as in the second embodiment, if the plate material P of 1 is cut a plurality of times, the second return roller 204b is returned. Residual material Pd may be generated at a position that cannot be supported by the roller 204b (see FIG. 4B). In this case, although the residual material Pd can be returned by the first return roller 204a, when the width dimension of the residual material Pd becomes longer than the width dimension of the first return roller 204a, the residual material Pd is returned by the first return roller 204a. There is a risk that it will not be able to be stably supported (returned).

On the other hand, in the present embodiment, both the first return roller 204a and the second return roller 304b are configured to be displaceable in the width direction. As a result, even if the residual material Pb generated by the first cutting and the width dimension of the residual material Pd when the residual material Pb is cut are longer than the first return roller 204a, the first return roller The 204a supports one end in the width direction of the remaining materials Pb and Pd (lower end in FIG. 6), and the second return roller 304b supports the other end in the width direction of the remaining materials Pb and Pd (upper end in FIG. 6). ) Can be supported.

That is, even when the width dimensions of the remaining materials Pb and Pd are longer than the width dimensions of the first return roller 204a (second return roller 304b), both ends of the remaining materials Pb and Pd in the width direction are the first return rollers 204a. And can be reliably supported by the second return roller 304b. Therefore, the residual materials Pb and Pd can be stably returned by the first return roller 204a and the second return roller 304b.

Although the present invention has been described above based on the above-described embodiment, the present invention is not limited to the above-described embodiment, and it is easy to make various modifications and improvements within a range that does not deviate from the gist of the present invention. It can be inferred. For example, the dimensions illustrated in each of the above embodiments are examples and can be set as appropriate.

In each of the above embodiments, as an example of the cutting means for cutting the plate material P, a circular saw 60 (one provided with a rotating disk-shaped blade portion 60a) has been exemplified, but the present invention is not necessarily limited to this. For example, the plate material P is formed by a plurality of slitters (rotating blades arranged so as to abut on both surfaces of the plate material P in the plate thickness direction and driven (rotating) as the plate material P is conveyed) facing the top and bottom of the plate material P. It may be configured to cut off. Further, a plurality of such slitters may be provided in the width direction.

In each of the above implementations, the case where the cutting portion 6 includes four circular saws 60 has been described, but the present invention is not necessarily limited to this, and for example, one to three or five or more circular saws 60 are cut. The configuration included in the unit 6 may be used.

In each of the above embodiments, the case where the circular saw 60 is configured to be displaceable in the width direction has been described. For example, the circular saw 60 is displaced in the vertical direction (for example, the blade portion 60a is vertically displaced with respect to the drive portion 60b). It may be configured (displaced in the direction). As a result, it is possible to prevent the blade portion 60a of the circular saw 60 from interfering with the residual material when the residual material is returned.

In each of the above embodiments, as an example of the workpiece, a flat plate-shaped plate P made of wood is illustrated, but the present invention is not necessarily limited to this, and the material and shape of the workpiece are not limited. Therefore, for example, the work piece may be made of paper, resin, or a metal material, and the shape of the work piece may be a frame shape or a prismatic shape.

In each of the above embodiments, the case where the transfer roller 3, the return roller 4, the first return roller 204a, and the second return rollers 204b and 304b are rotationally driven by a drive source has been described, but the present invention is not necessarily limited to this. It's not a thing. For example, a part of the transfer roller 3, the return roller 4, the first return roller 204a, and the second return rollers 204b, 304b is rotationally driven by the drive source, and a part is driven by the transfer of the plate material P (having a drive source). It may be configured to rotate on its own axis. Further, it may be composed of a belt conveyor instead of a roller, and these rollers and a belt conveyor may be combined.

In each of the above embodiments, the width of the first connecting member (the one that connects the return rollers 4 or the first return roller 204a) and the second connecting member (the one that connects the second return rollers 204b and 304b). The description of specific means for operating in both the directional direction and the vertical direction has been omitted. As an example of such means, a base member supported by a plurality of actuators (configured so as to be able to move up and down) is provided, the first connecting member and the second connecting member are supported by the base member, and the first connecting member is supported with respect to the base member. The connecting member and the second connecting member may be slidably displaced.

As an example of the configuration for sliding displacement, for example, a slide member (for example, a rail) formed along the width direction is provided on the base member, and the slide member guides the first connecting member and the second connecting member. While doing so, the first connecting member and the second connecting member may be driven by the actuator. Further, when the support portion 41 interferes with the first connecting member and the second connecting member when the first connecting member and the second connecting member are displaced in the width direction, the slit-shaped passage through which the supporting portion 41 can pass is passed. May be formed on the first connecting member and the second connecting member.

In each of the above embodiments, each of the plurality of return rollers 4 is integrally displaceable in the vertical direction and the width direction, and each of the plurality of first return rollers 204a is integrally displaceable in the vertical direction and the width direction. Although the case where it is configured to be displaceable has been described in, it is not necessarily limited to this. For example, all the return rollers may be individually displaced in the vertical direction or the width direction.

In the second embodiment and the third embodiment, the case where the second return rollers 204b and 304b are arranged at positions deviating from the displacement locus of the first return roller 204a has been described, but the present invention is not necessarily limited to this. No. For example, the first return roller 204a and the second return rollers 204b, 304b may be arranged side by side along the width direction. As a result, the arrangement space of the first return roller 204a and the second return rollers 204b, 304b in the transport direction can be reduced. Therefore, the cutting devices 201 and 301 can be miniaturized.

1,201,301 Cutting device 3 Conveying roller (conveying means)
4 Return roller (first return means)
204a First return roller (first return means)
204b, 304b Second return roller (first return means, second return means)
60 Circular saw (cutting means)
P plate material (workpiece)
Pb residual material (workpiece)

Claims (5)

A plurality of conveying means which are arranged along the conveying path of the workpiece, a cutting means for cutting the workpiece carried by the plurality of transport means, the workpiece is cut by the cutting means The return means is provided with a return means for returning the residual material in a direction opposite to the transport direction of the transport means, and the return means moves up and down between the transport means facing each other and the cover between the transport means facing each other. in the cutting device return the surplus material of the workpiece,
The cutting means is configured to have a variable cutting dimension of the workpiece in the width direction of the transport path.
The return means is a cutting device including a plurality of first return means that are displaced in the width direction of the transport path. The cutting device according to claim 1, wherein the return means includes a plurality of second return means fixed in the width direction of the transport path. The second return means is arranged at a position deviated from the displacement locus of the first return means in the width direction of the transport path.
The cutting device according to claim 2, wherein the first returning means and the second returning means are individually configured to be able to move up and down. The cutting device according to claim 2, wherein the first return means and the second return means are arranged so as to face each other in the width direction of the transport path. The plurality of first return means constitutes a first set that supports one end side of the residual material in the width direction of the transport path and a second set that supports the other end side.
The claim is characterized in that the first return means constituting the first set and the first return means constituting the second set are individually configured to be displaceable in the width direction of the transport path. The cutting device according to any one of 1 to 4.

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