JPH0314261Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cutting device for cutting a long material.

[Prior art]

As shown in FIG. 7, the conventional long material cutting device includes a cutting machine 4 for cutting the long material 1 conveyed from the long material stacker 2, and a cutting machine 4 for cutting the long material 1. It consists of a conveyance roller 6 for conveying, and a stopper 8 that comes into contact with the tip of the long material 1 to determine the cutting position of the long material 1, and the long material 1 is chucked by the rotary chuck mechanism 5A of the cutting machine 4. While rotating, the long material 1 is cut to a predetermined length with the cutting blade 4B, and then fed again with the conveying roller 6, positioned and cut with the stopper 8, and this process is repeated to manufacture a product with a predetermined size. was. In addition, the scraps left after cutting the product were being discarded.

〔problem〕

For long materials, the exact size is approximately 0 to +50 mm due to manufacturing reasons.
Furthermore, when cutting with conventional cutting equipment, a chuck allowance for gripping the long material 1 is always required, and the length of the end is approximately 50 to 100 mm, which corresponds to this machining tolerance and chuck allowance. The wood was discarded as scrap. If the long material is an expensive material (e.g. SUS, seamless pipe, etc.),
When only a small number of standard length products can be obtained from the long length of a book, there is a problem in that the manufacturing cost is particularly high.

The present invention was devised in view of the problems of the prior art, and its purpose is to provide a long material cutting device that can cut long materials without discarding scraps with a length equivalent to the chuck allowance. Our goal is to provide the following.

[Means for solving problems]

As a means for solving the above-mentioned problems, the long material cutting device according to the present invention is provided with a stopper installed in front of the conveying path of the long material, and the long material is conveyed until the front end comes into contact with the stopper. In the long material cutting device, the long material cutting device is equipped with a conveying means for cutting the long material, and a cutting machine that is located in the conveyance path and cuts the long material while grasping the long material. a second distance apart from the sum of at least one cutting length of
A stopper is installed, and the conveying means clamps the long material and conveys it to the rear of the conveyance path.The rear end of the material is brought into contact with the second stopper to cut the scrap material at the front end, and then the long material is transported to the rear of the conveyance path. It is configured to include an operating mechanism that transports the length material forward, brings it into contact with a stopper, and cuts it to its respective cutting length.

[Effect]

Since the present invention is configured as described above, the elongated material is once conveyed forward by the conveying means, but the elongated material is conveyed backward until the rear end of the elongated material abuts the second stopper. Ru. At this time, the distance from the second stopper to the cutting blade of the cutting machine (the length from the rear end of the long material to the cutting position of the cutting machine) corresponds to the total length of the product to be manufactured. At this position, the leading end of the long material is first cut by the cutting machine, and thereafter the long material is transported forward by the conveying means and cut by the cutting machine in sequence. That is, by pre-cutting offcuts that correspond to the processing tolerance, the part that is chucked by the chuck mechanism of the cutting machine also becomes a product of a predetermined length.

[Example of idea]

Next, embodiments of the present invention will be described based on the drawings.

FIG. 1 shows an embodiment of the present invention.
In FIG. 1, the long material cutting device cuts the long material 1 sent from the long material stacker 12 to the long material conveyance path as shown by arrow A in the left direction (hereinafter referred to as forward direction) in FIG. ) or to the right in FIG. A stopper 1 is located in front of the machine 14 and determines the cutting length of the long material 1 transported by the transport rollers 16.
8, and a second stopper 20 located behind the conveyance roller 16 and capable of protruding into the elongated material conveyance path by sliding in the direction of arrow B. In addition, the code|symbol 30 is a frame to which the long material cutting device is fixed.

The stacker 12 has a long material separation/unloading device 13.
A, 13B are incorporated, and the long materials housed in the stutter 12 are separated one by one and transported to a position where the driving force of the conveyance roller 16 is received.

The conveying means is equipped with the following operating mechanisms, and the conveying roller 16 is composed of a left roller 16B and a right roller 16A that are arranged opposite to each other on the left and right, and both rollers 16A, 16B are moved in the direction of arrow C. , and move the long material 1 to both rollers 16A, 16B.
It is designed to be transported while being held in place. Note that reference numeral 17 is a drive motor for driving the conveyance roller 16, and is a reversible motor that can rotate in forward and reverse directions.

A cutting machine 14 having a cutting blade 14A is arranged at a position in front of the transport roller 16 in the transport direction.
The cutting machine 14 is equipped with a rotary chuck mechanism 15, and the long material 1 conveyed by the conveyance roller 16 is chucked and rotated by the rotary chuck mechanism 15, and is rotated by the arrow D of the cutting blade 14A. It is designed to be cut by movement in the direction. Note that the reference numeral 15A indicates the rotary chuck mechanism 15.
A drive motor for rotationally driving the
A and 19B are long material supporting rollers that are arranged opposite to each other with an appropriate interval in the conveyance direction of the conveyance path,
This is to ensure smooth rotation of the long material 1.

At the front position of the cutting machine 14, there is a blade that comes into contact with the tip of the long material 1 that has been conveyed by the conveyance roller 16,
A stopper 18 is provided for determining the cutting length (product length). The stopper 18 is composed of a hydraulic cylinder part 18A and a stopper part 18B provided at the tip of the cylinder rod.The cutting length (product length) is adjusted by operating the hydraulic cylinder part 18A and changing the position of the stopper part 18B. Further, the stopper 18 can be moved in the direction of arrow E, and when it is desired to greatly change the cutting length, the stopper 18 can be moved in the direction of arrow E.
It is now possible to move the . A conveying device 22 is installed between the cutting machine 14 and the stopper 18 for carrying out the cut products.

At the left position of the stacker 12
A second stopper 20 is installed at a position that does not prevent the elongated material 1 from being carried out. This second stopper 20 is designed to be able to slide back and forth in the direction of arrow B, and is normally located on the left side of the conveyance path for the long material 1 from the stacker 12, but can be moved to the long material conveyance path as needed. It's starting to stand out. The stopper (second stopper) 20 is a hydraulic cylinder section 20
A and a stopper part 20B provided at the tip of the cylinder rod, and the stopper 20 is movable in the direction of arrow F, and
By operating 0A or by moving the stopper 20, the distance L between the cutting blade 14A of the cutting machine 14 and the stopper portion 20B can be changed. The distance L from the cutting blade 14A to the stopper part 20B is set to the sum of the product lengths a _i produced by cutting one long material 1, _n 〓 ⁱ⁼¹ a _i , and the conveyance roller 16 When the elongated material 1 is conveyed rearward by this, the elongated material 1 is conveyed until the rear end of the elongated material 1 comes into contact with this stopper portion 20B. That is, the stopper 20 is adapted to determine the cutting position of the scrap material to be disposed of.

Reference numeral 24 denotes a passage confirmation device for the long material 1, which is installed in the long material transport path between the transport roller 16 and the stopper 20, at a position near the stopper 20 and at a position that does not interfere with the operation of the stopper 20. It is being
When the long material 1 is sent forward by the conveyance roller 16 and the rear end of the long material 1 passes through the passage confirmation device 24, the passage confirmation device 24 stops driving the conveyance roller 16, and stoppa 20
is designed to be slid into the conveyance path.
The position where this passage confirmation device 24 is installed is not limited to the vicinity of the stopper 20, but it is designed to detect the passage of the rear end of the long material 1, and the closer it is to the stopper 20, the faster the conveyance roller 16 is installed. This has the advantage of being able to shorten work time, such as by being able to stop the process.

Next, the operating procedure when cutting a long material to a fixed length using the long material cutting device according to this embodiment is shown in FIGS.
This will be explained based on FIG.

First, the positions of the stoppers 18 and 20 are determined. That is, the length from the cutting blade 14A of the cutting machine 14 to the stopper part 18B of the stopper 18 is the product length a, and the length from the cutting blade 14A of the cutting machine 14 to the stopper 2 is
0 to the stopper portion 20B is set to na.

When the apparatus according to this embodiment is operated, first, one long material 1 is carried out from the stacker 12, as shown in FIG. At this time, stopper 20
is located on the left side of the conveyance path for the long material 1. The conveyance rollers 16A and 16B slide in the direction of arrow C to sandwich the long material 1, and the long material 1 is transported by the conveyance roller 1.
6 is carried forward. As shown in FIG. 3, when the rear end of the long material 1 passes the passage confirmation device 24, the drive of the conveyance roller 16 is stopped, and at the same time the stopper 20 slides and protrudes into the long material conveyance path. becomes. Then, the conveying roller 16 is driven in the opposite direction, and the long material 1 is conveyed backward, and the fourth
As shown in the figure, the rear end of the elongated material 1 comes into contact with the stopper portion 20B, and the driving of the conveying roller 16 is stopped.

In this state, the rotary chuck mechanism 15 of the cutting machine 14
rotates while chucking the long material 1, and at the same time, the cutting blade 14A moves to cut and remove the long material 1 from its tip by a length corresponding to the scrap material. Note that at this time, the conveyance rollers 16A and 16B move in the direction of arrow C.
The long material 1 is slid in the opposite direction to the chuck mechanism 15 and the long material supporting rollers 19A, 19.
Supported only in B. After cutting the end, the cutting blade 14A returns to its original position, and the rotation and chuck by the rotary chuck mechanism 15 are released. Then, the conveyance rollers 16A and 16B slide again in the direction of arrow C, the conveyance roller 16 is driven, and the long material 1 is conveyed forward until it comes into contact with the stopper 18 and stops conveyance, as shown in FIG. do. In this state, the conveyor rollers 16A and 16B open, the rotary chuck mechanism 15 operates to chuck the long material 1 and rotate, and at the same time the cutting blade 14
A moves and the long material 1 is cut into a predetermined length. The cut products are transported out by a lower transport device 22.

In this way, the conveyance by the conveyance rollers 16 and the cutting by the cutter 14 are repeated, and the long material 1 is cut to a predetermined size a. The last product chucked by the chuck mechanism 15 also has a predetermined size a, and is separated from the stacker 12 and extruded into a newly conveyed long material, and is conveyed out by the conveyance device 22. Then, a new long material is cut to a fixed length using the same procedure, and products of a fixed length are manufactured one after another.

In this way, in this embodiment, since the length of the scraps to be discarded does not include the length equivalent to the chuck allowance, it is possible to reduce waste when cutting the long material 1, and to reduce the waste when cutting the long material 1. 1 can be used effectively. In other words, the second stopper can be slid in the direction perpendicular to the conveyance path, and can be adjusted by sliding in the longitudinal direction of the conveyance path. By rotating the transport roller in the opposite direction and bringing the rear end of the long material into contact with the material, the cutting blade cuts the end material at the tip, and then the transport roller is rotated in the normal direction and is placed in the front stopper. It is sufficient to cut the long material into respective cutting lengths by bringing the tips of the material into contact with each other, and since the conveyance rollers convey the long material while holding and restraining it, the surface of the material will not be damaged. Then, scraps with varying lengths are first cut to obtain a long material of a predetermined size, and then cut to the respective cutting lengths. Measuring equipment is not required, and cutting to a predetermined size is possible.

Although the above embodiment describes the case where the long material cutting device cuts to a fixed length, it can also be applied to cases other than cutting to a fixed length, and in this case, the stopper 18 is Just adjust the position of.

Further, in the embodiment, the cutting machine 14 is fixed to the pedestal 30, and the stoppers 18 and 20 are movable back and forth in the conveying direction, and the stopper portion 1
By moving 8A and 20A, the long material 1
However, one of the stoppers 18, 20 and the cutting machine 14 is fixed in the longitudinal direction of conveyance of the long material, and the other two are movable in the longitudinal direction of conveyance. The elongated material 1 may be positioned by doing this.

Further, in the embodiment described above, the cutting length is determined by making the stoppers 18 and 20 movable in the longitudinal direction of conveying the long material. has 32A,
By using the stopper 32 in which a plurality of stopper portions 32B having different heights are provided in an annular shape on the surface of the rotating disk 32, positioning can be performed without moving the stopper in the forward and backward directions of conveying the long material. be able to.

[Effect of idea]

As is clear from the above description, according to the present invention, the length of the scraps to be discarded becomes small, so it is possible to effectively utilize the long materials. Furthermore, since the long material is held and conveyed, the front end of the material is first cut, and then cut to a predetermined cutting length, accurate cutting length can be obtained.
This has the effect of eliminating the need for measuring equipment such as full length measurement.

[Brief explanation of drawings]

Figure 1 is a plan view showing one embodiment of the present invention;
5 to 5 are plan views illustrating its operating state, FIG. 6 is a perspective view of essential parts of another embodiment of the present invention, and FIG. 7 is a plan view of a conventional long material cutting device. 1... Long material, 12... Long material stacker, 13
... Long material separation and carrying device, 14 ... Cutting machine, 14
A...Cutting blade, 15...Chuck mechanism, 16 (1
6A, 16B)... Conveyance roller, 17... Drive motor that drives the conveyance roller, 18, 20, 32...
... Stopper, 22 ... Carrying out device, 24 ... Passage confirmation device for long material, 30 ... Frame.

Claims (1)

[Claims for Utility Model Registration] 1. A stopper is installed in front of a conveyance path for the elongated material, and a conveying means for conveying the elongated material until its front end abuts against the stopper; A cutting machine that cuts a long material while gripping it;
In the long material cutting device, a second stopper is installed at the rear of the conveyance path at a distance equal to the total length of at least one cut of the long material from the cutting blade position of the cutting machine. The conveyance means grips the long material and conveys it to the rear of the conveyance path, and after bringing the rear end into contact with the second stopper and cutting the scraps at the front end, A long material cutting device characterized by comprising an operating mechanism that transports the long material forward, brings it into contact with the stopper, and cuts the long material into respective cutting lengths. 2. The stopper against which the leading end of the long material abuts is movable in the longitudinal direction of the conveyance path, and the second stopper against which the rear end of the long material abuts protrudes into the conveyance path and extends along the conveyance path. A long material cutting device according to claim 1, characterized in that it is movable in any direction. 3 The distance between the second stopper that the rear end of the long material contacts and the cutting blade of the cutting machine is the distance between the stopper that the tip of the long material contacts and the cutting blade of the cutting machine. A long material cutting device according to claim 1, characterized in that the length is set to an integral multiple of . 4. A detector is provided in the conveyance path of the long material to detect when the long material has been conveyed forward to a position that does not prevent the second stopper from protruding into the conveyance path. A long material cutting device according to claim 2 of the utility model registration claim, characterized in that: