JPS62811Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cutting device. More specifically, the present invention relates to a cutting device used for cutting off unnecessary parts of synthetic resin molded products and the like.

Synthetic resin molded products have been used for various purposes in recent years because they have excellent physical properties such as durability, chemical resistance, and moldability. However, although synthetic resin molded products have the above-mentioned good properties, they also have the property of being slippery due to their physical properties, which is a drawback in some applications. For this reason, when pallets used for transporting and storing cargo are made of synthetic resin, for example, a rubber-like anti-slip material is attached by a method such as welding.

However, as the pallet is used, such anti-slip materials gradually wear away, reducing their effectiveness and eventually rendering them useless.

For this reason, it is necessary to remove the remaining part of the anti-slip at an appropriate time and reinstall a new anti-slip to restore the anti-slip effect.

In order to provide a good cutting device that can be used to remove unnecessary residual parts of synthetic resin molded products as described above, the inventors of the present invention have conducted various studies and have developed a cutting device with a rotating blade with a special tracing mechanism. By applying this, we solved the problem and completed this invention.

That is, the gist of the present invention is a cutting blade attached to a rotating shaft, a feeding mechanism for feeding a workpiece relative to the cutting blade, and a feed mechanism provided in front of the cutting blade,
In a cutting device consisting of a copying roller that copies the surface of a workpiece and a cutting blade moving mechanism that moves a cutting blade according to the movement of the copying roller, the presence or absence of a cut part of the workpiece is detected in front of the copying roller. The present invention is characterized by providing a detection mechanism for the part to be cut, and a locking mechanism that locks the position of the cutting blade in conjunction with the detection mechanism when the detection mechanism detects that the part to be cut is missing. The cutting equipment consists of

An example of the apparatus of the present invention will be further explained below with reference to the drawings.

Fig. 1 is a side view of an example of the device of the present invention, Fig. 2 is a front view of the device shown in Fig. 1, and Fig. 3 is similar to Fig. FIG. 4 is a partially enlarged side view showing another example of the device of the present invention.

In the figure, 1 is the cutting blade, 2 is the rotating shaft, 3 is the object to be cut,
4 is a part to be cut, 5 is a feed roller, 6 is a feed member, 7 is a copying roller, 8 is a spindle, 9 is a connector,
10 is a copying roller cylinder, 11 is a moving shaft, 12 is a support member, 13 is an adjustment shaft, 14 is a cutting blade cylinder, 15 is a detection roller, 16 is a switch, 17 is a connecting line, 18 is a lock mechanism, 19
20 is an electric motor, 20 is an air outlet, and 21 and 21' are phototube devices, respectively.

The device of the present invention generally comprises a cutting blade 1 for cutting and removing unnecessary parts of the workpiece, such as worn out parts of the anti-slip material of a pallet, and a device for controlling the position of the cutting blade 1.

The cutting blade 1 is attached to a rotating shaft 2 driven by an electric motor 19, and is configured to cut a portion 4 of a workpiece 3 by rotating at high speed.

A copying roller 7 is provided in front of the cutting blade 1 for tracing the surface of the object to be cut, and is adapted to adjust the vertical position of the cutting blade 1.

The interlocking relationship between the copying roller 7 and the cutting blade 1 will be explained.

The copying roller 7 is attached to one end of a support shaft 8, and the support shaft 8 is inserted through the support member 12 so as to be vertically movable. Further, a connecting tool 9 is attached to an intermediate portion of the supporting shaft 8 so as to be adjustable in the vertical direction of the supporting shaft 8, and the connecting tool 9 is fixed to a moving shaft 11 of a cylinder 10 provided on a supporting member 12.

By doing so, the copying roller 7 can be moved up and down by the operation of the cylinder 10, and is pressed against the workpiece 3 with a constant pressure. The rotating shaft 2 is rotatably attached to the supporting member 12, and the supporting member 12 is attached to the adjusting shaft 13 of the cutting blade cylinder 14.

That is, the cutting blade 1 is moved through the adjustment shaft 13 and the support member 12 by the operation of the cutting blade cylinder 14.
is designed to move up and down.

Such a device is used to cut the cut portion 4 of the workpiece 3. During cutting, the cutting blade 1 is first positioned below the lower end of the copying roller 7 by the amount of cutting margin. , start cutting. The workpiece 3 is pushed by the feed member 6 and moves on the feed roller 5, thereby progressing the cutting.

Of course, at this time, the object to be cut 3 only needs to be fed in relative to the cutting blade 1, and the object to be cut 3 or the cutting blade 1 may move.

The cutting amount of the cutting blade 1 is controlled by the copying roller 7. The vertical movement of the copying roller 7 is detected, and the cutting blade cylinder 14 is operated by the amount of the vertical movement of the copying roller.
It is best to keep the position constant. The vertical movement of the copying roller 7 may be detected by any method; for example, the amount of fluid flowing into or out of the copying roller cylinder 10 may be detected, and the operating amount of the cutting blade cylinder 14 may be determined based on this. good.

By doing so, even if the cut part 4 is uneven in the vertical direction, the cut part 4 can be removed at a constant depth.

In this way, the part to be cut 4 moves up and down according to the copying roller 7, but when the copying roller 7 reaches the end of the object to be cut 3, the copying roller 7 descends extremely at this point. If the movement of the cutting blade 1 is made to perfectly match the copying roller 7, the cutting blade 1 will also descend as the copying roller 7 goes down, cutting even areas of the workpiece 3 that should not be cut. It will be put away.

For this reason, the device of the present invention has a cut portion 4 which is the surface portion of the cut object 3 in front of the copying roller 7.
A cut portion detection mechanism is provided to detect the presence or absence of the cut portion.

The cut part detection mechanism includes, for example, a detection roller 15 and a switch 1 as shown in FIGS. 1 to 3.
6 or may be a device consisting of phototube devices 21 and 21' as shown in FIG. Any device may be used as long as it has a function of detecting whether or not it is present.

For example, as shown in FIG. 3, the mechanism for detecting the cut part is that when the detection roller 15 reaches the end of the cut object 3 and the cut part 4 disappears, the detection roller 15 descends extremely. Switch 16 is turned on and actuates locking mechanism 18 through connection line 17.

When the lock mechanism 18 operates, the cutting blade cylinder 14 is fixed at that position and the copying roller 7
It will no longer be linked to the movement of. That is, even if the copying roller 7 reaches the end of the part to be cut 4 and the copying roller 7 descends extremely downward, the cutting blade 1 will not descend and will continue cutting to the end while maintaining a constant position. .

In the case of the device shown in FIG. 4 as well, the only difference is that the detection roller 15 is replaced with a phototube device 21, and the phototube device 21 detects the end of the workpiece (the missing part of the workpiece). This actuates the lock mechanism 18.

As described above, in the device of the present invention, the cutting blade 1 moves up and down in accordance with the up and down movement of the copying roller 7, so that cutting is performed uniformly, and when the cutting blade 1 approaches the end of the workpiece 3, Since the locking mechanism 18 works to fix the cutting blade 1, even if the copying roller 7 comes off the workpiece 3 and descends extremely, the cutting blade 1 will not descend and there is no fear of excessive cutting.

Although the cutting blade 1 is shown as a vertical cutting blade in the drawing, it may also be a horizontal cutting blade, that is, a device in which the rotating shaft is installed horizontally, and the position to be copied by the copying roller 7 may be, for example, the surface of the pallet. When cutting worn out anti-slip material etc. provided on the surface of the cutting surface, the surface of the anti-slip material may be copied, or the surface of the pallet on the side of the non-slip material may be copied. is to copy the front of the cutting blade 1, but if the copying point is too close, it may be affected by deformation from the cutting part, or the shavings may get under the copying roller 7, making the copying inaccurate. It is desirable that the scanning point is at least 5 mm away from the cutting edge 1. If the copying point is too far away from the cutting blade 1, the copying will be inaccurate, so it is desirable that the copying point be within 5 cm.

The amount of cutting by the cutting blade 1 varies depending on the type of object to be cut, the amount of the part to be cut, etc., but for example,
A groove is provided on the surface of a synthetic resin pallet, and a string-shaped anti-slip material made of rubber or the like is attached to the groove by welding. When removing, etc., it is best to make the cutting width the same as the width of the grooves on the pallet, or a few mm larger. Since uncut parts are left behind, the width is usually several mm larger. In addition, the depth of cutting is such that the anti-slip material is completely removed and the surface of the pallet is slightly removed.
Possible options include cutting to a depth that is approximately the same as the position where the non-slip material is adhered to the pallet, or cutting to a depth that leaves a small portion of the bottom of the non-slip material, but after cutting, reapply new non-slip material. From the point of view of ease of welding the anti-slip material, it is effective to leave some of the lower part of the old anti-slip material remaining.

Furthermore, if the cutting waste from the cutting blade 1 scatters and gets under the copying roller 7, the copying becomes inaccurate and the cutting becomes uneven. It is desirable to provide a shavings removal mechanism such as the following. The shavings removing mechanism may be, for example, a rotating brush, a suction device, etc., but it is preferable to provide an air outlet 20 to blow off the swarfs because it is simple and reliable. It is desirable that the air outlet 20 is provided so that the blown air crosses the front of the copying roller 7.

Note that the response of the cutting blade 1 to the copying roller 7 can be detected by the copying roller 7 by taking into account the distance between the copying roller 7 and the cutting blade 1 and the moving speed of the workpiece 3 and delaying the response by a predetermined period of time. The position of the unevenness and the position of the unevenness cut by the cutting blade match. This response delay can also be applied between the sensing roller 15 and the locking mechanism 18.

Further, the detection roller 15 detects the relative position with respect to the copying roller 7, that is, the switch 16 is normally turned on when the detection roller 15 descends a predetermined distance from the copying roller 7. The predetermined distance is appropriately adjusted depending on the amount of cutting, the structure of the part to be cut, etc., and is usually set to several mm to several cm. For example, when the part to be cut is provided only on a part of the surface of the workpiece, it is preferable to operate the lock mechanism 18 even if the detection roller 15 is slightly displaced from the copying roller 7.
When the part to be cut is provided over the entire part of the object to be cut, the detection roller 15 only needs to detect the edge of the object to be cut, so the locking mechanism is activated when the detection roller 15 is largely displaced. Just do it.

According to the device of the present invention, when the string-like anti-slip material provided on the synthetic resin pallet becomes old, it can be efficiently removed, and
It is a very excellent device in practical use, as it does not cause problems such as over-shaving.

[Brief explanation of the drawing]

Fig. 1 is a side view of an example of the device of the present invention, Fig. 2 is a front view of the device shown in Fig. 1, and Fig. 3 is similar to Fig. FIG. 4 is a partially enlarged side view showing another example of the device of the present invention. In the figure, 1 is the cutting blade, 2 is the rotating shaft, 3 is the object to be cut,
4 is a part to be cut, 5 is a feed roller, 6 is a feed member, 7 is a copying roller, 15 is a detection roller, 1
8 indicates a locking mechanism.

Claims (1)

[Claims for Utility Model Registration] (1) A cutting blade attached to a rotating shaft, a feeding mechanism that feeds a workpiece relative to the cutting blade,
In a cutting device that includes a copying roller provided in front of a cutting blade to copy the surface of a workpiece, and a cutting blade movement mechanism that moves the cutting blade in accordance with the movement of the copying roller, a copying roller is provided in front of the copying roller to copy the surface of the workpiece. A lock mechanism is provided with a cut part detection mechanism that detects the presence or absence of a cut part of an object, and when the detection mechanism detects that the cut part is missing, the lock mechanism is linked to the detection mechanism and fixes the position of the cutting blade. A cutting device characterized by being provided with. (2) The cut part detection mechanism comprises a detection roller that comes into contact with the cut part, and a switch that is activated by the height difference between the detection roller and the copying roller. The cutting device according to item 1. (3) The cutting device according to claim 1, wherein the cut part detection mechanism is comprised of phototubes provided at positions that sandwich the cut part. (4) Any one of claims 1 to 3, characterized in that the copying roller is provided with an air outlet for removing foreign matter from the surface of the part to be cut immediately before the copying roller. The cutting device described in .