JP4548778B2 - Cutter mechanism of cutting plotter - Google Patents

Description

  The present invention is a cutter mechanism that is used by being mounted on a cutting plotter head, and is a cutting plotter that cuts a medium to be cut such as a vinyl chloride sheet, a sheet for making a sticker or a sticker along a desired cutting line. It relates to a cutter mechanism.

As shown in FIG. 3 and FIG. 4, the upper side of the cut medium 50 such as a vinyl chloride sheet mounted on the platen 60, a sheet for creating a sticker or a sticker, etc., is substantially parallel to the surface of the platen 60. A cutting plotter that cuts the cut medium 50 mounted on the platen 60 along a desired cut line 80 by the cutter blade 20 of the cutter mechanism 100 mounted on the head 70 that is relatively moved in the front, rear, left, and right directions). Is well known.
In this cutting plotter, the cut medium 50 is moved in the X direction on the substantially plate-like horizontal platen 60 as shown in FIG. 3, and the head 70 is moved in the Y direction above the platen 60. The vertical plotter for moving the head 70 relative to the cut medium 50 mounted on the platen 60 in the XY direction and the cut medium 50 mounted on the platen 60 having a wide bed shape. There is a horizontal plotter that moves the head 70 in the XY direction above.

The cutter mechanism 100 mounted on the head 70 of these vertical and horizontal plotters has a structure as shown in FIG. 5, for example.
In this cutter mechanism 100, a substantially rod-shaped cutter blade 20 can be rotated about its axis via a support bar 30 in the axial direction in a bottomed cylindrical holder 10 attached to the head 70. It is supported by. The tip of the cutter blade 20 protrudes below the support rod 30, and the blade edge 22 in the shape of a knife edge at the tip of the cutter blade 20 is lowered while rotating the support rod 30 in the holder 10, whereby the holder 10 bottom It has a structure that can be protruded below the holder 10 through the inside of the hole 12 opened in the wall.
According to this cutter mechanism 100, as shown in FIGS. 3 and 4, the holder 10 of the mechanism is mounted on the head 70 of the cutting plotter, and the bottom surface of the holder 10 is mounted on the platen 60 to be cut. By moving the holder 10 together with the head 70 in the XY direction substantially parallel to the surface of the platen 60 while being pressed against or brought close to the surface of the medium 50, the inside of the holder 10 is changed. The cutter blade 20 rotatably supported by the support rod 30 was made to protrude below the holder 10 through the inside of the hole 12 of the bottom wall of the holder while appropriately rotating in the forward and reverse directions along the cut line 80 around the axis. The cutting target medium 50 can be cut along a desired cut line 80 by the cutting edge 22 of the cutter blade. At that time, the bottom surface of the holder 10 pressed against or brought close to the surface of the medium to be cut 50 can be stretched flat so as not to cause wrinkles in the portion of the medium to be cut 50 cut by the cutter blade 20. Then, the cut medium 50 can be accurately cut along the desired cut line 80 without deviation.

By the way, when the medium to be cut 50 is cut using the cutter mechanism 100 having such a structure, a part of the medium to be cut 50 is scraped off by the cutting edge 22 of the cutter blade that is cutting the medium to be cut 50. Then, chips of the cut medium 50 were generated from the vicinity of the blade edge 22 of the cutter blade. Then, the chips became clogged in a gap between the hole 12 in the holder bottom wall and the cutter blade 20 inserted through the hole. And under the influence of the swarf stuck in the gap, the rotation of the cutter blade 20 inserted through the hole 12 in the bottom wall of the cutter has become awkward and the smooth rotation of the cutter blade 20 has been hindered.
As a result, the cutter blade 20 that is rotatably supported by the support rod 30 in the holder 10 follows the cut line 80 of the medium to be cut, while rotating the cutter blade 20 at an appropriate angle forward and backward around its axis. It has become impossible to accurately follow the cutting edge 22 of the blade to the cut line 80 of the cut medium. Then, the cut line 80 cut by the cut medium 50 has become distorted.
This tendency is prominent in sheets such as seals and stickers that are frequently used recently. The reason is that a sheet such as a sticker or a sticker is formed on its surface with an ink receiving layer (not shown) made of a viscous material for printing various pictures and characters using an ink jet printer. It is. And when such a sheet | seat is cut with the cutter blade 20, it is easy to clog the clearance gap between the hole 12 of a holder bottom wall, and the cutter blade 20 penetrated by this hole from the ink receiving layer of the surface. This is because many viscous fine chips are generated.

Chips generated from the vicinity of the blade edge 22 of the cutter blade that is cutting the cut medium 50 are clogged in the gap between the hole 12 in the holder bottom wall and the cutter blade 20 inserted through the hole, As a preceding cutter mechanism having means for preventing the cut medium 50 from being cut accurately, there is one disclosed in Japanese Patent Laid-Open No. 11-99499.
In this preceding cutter mechanism, a notch is provided on the bottom surface of the case corresponding to the holder 10 to release chips generated from the vicinity of the cutting edge of the cutting blade corresponding to the cutter blade 20 to the outside of the case. Then, through the inside of the cutout, the cutting powder is excluded to the outside of the case, and the cutting powder is prevented from clogging the protruding opening of the cutting blade on the bottom surface of the case.
JP 11-99499 A

However, when the cut medium having the ink receiving layer formed on the surface as described above is cut using the preceding cutter mechanism, a large number of the cut medium from the vicinity of the cutting edge of the cutting blade being cut. The fine, viscous chips that are generated do not pass through the inside of the notch provided on the bottom of the case, which is equivalent to the holder, and are clogged in the middle of the notch and smoothly removed outside the case through the inside of the notch. Instead, the bottom surface of the case was adhered to the surface of the cut medium part that was pressed against or brought close to.
The reason why such a phenomenon occurs in the preceding cutter mechanism is that the chips generated from the vicinity of the cutting edge of the cutting blade are engraved from the peripheral edge of the cutting blade on the bottom surface of the case to the peripheral edge of the case bottom wall. This is because it has a structure that is removed by taking a long distance outside the case through the inside of the notch. Therefore, while the viscous cutting powder is removed from the inside of the elongated notch over a long distance, it is pushed by the bottom of the case, and the cut media in which the inner wall of the notch and the bottom of the case are pressed or brought close to each other It is thought that it is because it adheres to the partial surface.

  The present invention has been made in view of such a problem, and chips generated from the vicinity of the cutting edge of the cutter blade that is cutting the medium to be cut include a hole in the bottom wall of the holder and a cutter blade inserted into the hole. It is an object of the present invention to provide a cutter mechanism (hereinafter referred to as a cutter mechanism) of a cutting plotter that can accurately prevent a smooth rotation of a cutter blade from being blocked by a gap between the two.

In order to achieve such an object, the cutter mechanism of the present invention is:
With the bottom of the bottomed cylindrical holder pressed against or in close proximity to the surface of the media to be cut, rotate the substantially rod-shaped cutter blade supported in the axial direction inside the holder at an appropriate angle around the axis. However, in the cutter mechanism of the cutting plotter that cuts the media to be cut by the cutting edge of the cutter blade that protrudes downward through the hole in the holder bottom wall,
Only the peripheral wall near the inner bottom surface of the holder, the cutting media generated near the cutting edge of the cutter blade that is cutting the cut media and entering the inside of the holder through the hole in the bottom wall of the holder is discharged outside the holder. It is characterized in that a discharge hole is provided.

In Ca Potter mechanism with such a configuration, the holder inside through the gap between the cutter blade inserted through the hole and the hole of the holder bottom wall to generate the cut media from near the cutting edge of the cutter blade in the cut Chips of the media to be cut that have entered can be discharged to the outside of the holder through the discharge holes provided only in the holder peripheral wall near the bottom surface of the holder. Then, the swarf stays in the gap between the hole in the holder bottom wall and the cutter blade inserted in the hole, or is clogged, or between the hole in the holder bottom wall and the cutter blade inserted in the hole. It is possible to prevent the chips that have entered the inside of the holder through the gaps from accumulating in the holder inner space that supports the cutter blade and preventing the smooth rotation of the cutter blade from being interrupted by the chips.
In addition, the holder bottom wall is formed thin, the holes opened in the holder bottom wall are shortened, the holder peripheral wall is formed thin, the discharge holes opened in the holder peripheral wall are shortened, and those holes are formed. And the space inside the holder connected to the discharge hole can be expanded. Then, the chips discharged to the outside of the holder through these holes, the inner space of the holder, and the inner side of the discharge hole are pushed by the holder peripheral wall and stagnate on the way. It can prevent adhering. And even if it is viscous swarf, the swarf passes through the shortened hole in the holder bottom wall, the wide inner space of the holder and the shortened discharge hole in the holder peripheral wall to the outside of the holder with little resistance and smoothly. Can be accurately excluded.

  As described above, according to the first and second cutter mechanisms of the present invention, the cut media generated from the vicinity of the cutting edge of the cutter blade that is cutting the cut media is removed from the hole in the holder bottom wall. The clogging between the cutter blade inserted through the hole and clogging in the inner space of the holder that supports the cutter blade prevents the smooth rotation of the cutter blade from being hindered by chips. be able to. The cutter blade can accurately cut the media to be cut along the cut line while always rotating the cutter blade along the cut line that cuts the media to be cut smoothly with little resistance. .

  FIG. 1 shows a preferred embodiment of the first cutter mechanism of the present invention, and FIG. 1 is a front sectional view thereof. Below, this 1st cutter mechanism is demonstrated.

The first cutter mechanism includes a holder 10 having a bottomed cylindrical shape, and a circular hole 12 is opened at the center of the holder bottom wall.
In the axial direction in the holder 10, a substantially rod-shaped cutter blade 20 is supported via a support rod 30 so as to be rotatable about its axis.
Specifically, the support rod 30 is screwed into the holder 10 so as to be rotatable. The support bar 30 can be moved up and down in the axial direction of the holder 10 by rotating the support bar 30 forward and backward relative to the holder 10. A retaining ring 40 is screwed around the upper end of the support rod 30 protruding above the holder 10, and the retaining rod 40 moves the support rod 30 that moves up and down the inner space of the holder 10 to a predetermined position with respect to the holder 10. It has a structure that can be fixed as if
A blind hole 32 is opened in the axial direction of the lower end of the support rod 30, and the upper part of the cutter blade 20 is loosely inserted along the axial center in the blind hole 32. The cutter blade 20 is supported in the blind hole 32 through a pivot mechanism 34 and a bearing mechanism 36 so as to be rotatable around its axis.
The tip of the cutter blade 20 protrudes below the support rod 30. Then, by lowering the support rod 30 downward in the holder 10 inner space by a predetermined distance, the blade edge 22 in the shape of a knife edge at the tip of the cutter blade 20 is passed through the hole 12 in the holder bottom wall and has a predetermined length below the holder 10. It has a structure that can be projected.
Then, the holder 10 is placed above the cut medium 50 in a state where the bottom surface of the holder 10 in which the cutting edge 22 of the cutter blade protrudes below the holder 10 is pressed against or brought close to the surface of the cut medium 50 mounted on the platen 60. Is relatively moved in the XY direction substantially parallel to the surface of the platen 60, so that the cutter blade 20 is rotated in the holder 10 along the desired cut line 80 of the medium to be cut 50 in an appropriate angle forward and backward. However, the cut medium 50 can be cut along the desired cut line 80 by the cutter blade 20.

  The above configuration is the same as that of the conventional cutter mechanism 100 described above shown in FIG. 5, but in the first cutter mechanism of FIG. 1, the holder 10 peripheral wall near the bottom surface of the holder 10 is further mounted on the platen 60. The cut medium 50 mounted on the cutting edge is cut off from the cut medium 50 by the cutting edge 22 of the cutter blade being cut, and is generated from the vicinity of the cutting edge 22 of the cutter blade, and passes through the hole 12 in the holder bottom wall to pass the inside of the holder 10. One or a plurality of discharge holes 14 are provided for discharging cutting chips (not shown) entering the outside of the holder 10 to the outside. The discharge hole 14 is opened in the peripheral wall of the holder 10 with its lower end biting into the bottom surface of the holder 10. And it is set as the structure where the obstruction wall which stands up does not arise between the inner bottom face of the holder 10, and the discharge hole 14 lower end inner peripheral wall connected to it. And it is set as the structure which can guide | invade smoothly the chips which accumulate on the bottom face in the holder 10 without being caught inside the discharge hole 14 connected to it.

The first cutter mechanism shown in FIG. 1 is configured as described above. According to the first cutter mechanism, the medium to be cut 50 is generated from the vicinity of the cutting edge 22 of the cutter blade that is cutting the holder. Chips of the cut medium 50 that have entered the inside of the holder 10 through the gap between the hole 12 in the bottom wall and the cutter blade 20 inserted through the hole are accurately passed to the outside of the holder 10 through the discharge hole 14 in the holder peripheral wall. Can be discharged. Then, the chips are clogged in the gap between the hole 12 in the holder bottom wall and the cutter blade 20 inserted through the hole, or the hole 12 between the holder bottom wall and the cutter blade 20 inserted through the hole. The chips that enter the holder 10 through the gap between them accumulate in the inner space of the holder 10 that rotatably supports the cutter blade 20, and the smooth rotation of the cutter blade 20 is prevented by the chips. Can be prevented.
Further, the bottom wall of the holder 10 and the peripheral wall of the holder 10 are formed thin, and the holes 12 opened in the holder bottom wall and the discharge holes 14 opened in the peripheral wall of the holder 10 are shortened, or the holes 12 and the discharge holes 14 are formed. The chip 10 discharged from the holder 10 through the hole 12, the inner space of the holder 10 and the inner side of the discharge hole 14 is pushed by the peripheral wall of the holder 10 in the middle. It is possible to prevent stagnating due to strong resistance and adhering to the inner wall of the hole 12, the discharge hole 14, or the inner space of the holder 10. Even if it is viscous swarf, the swarf is passed to the outside of the holder 10 through the shortened hole 12 in the holder bottom wall, the wide inner space of the holder 10 and the shortened discharge hole 14 in the holder peripheral wall. It can be eliminated smoothly and accurately with little resistance.

Figure 2 shows a reference example of mosquitoes Potter mechanism of the present invention, FIG. 2 is a front sectional view. The cutter mechanism of this reference example will be described below.

In the cutter mechanism of this reference example , the holder peripheral wall is not provided with a discharge hole. Instead, compressed air is supplied to the inner space of the holder 10 and the compressed air is supplied to the outside of the holder 10 through the hole 12 in the holder bottom wall. Compressed air circulation means 90 is provided for discharge. Then, the medium to be cut 50 is scraped off by the blade edge 22 of the cutter blade being cut by the air pressure of the compressed air discharged from the hole 12 of the holder bottom wall to the outside of the holder 10 and generated from the vicinity of the blade edge 22 of the cutter blade. The cut powder of the cut medium 50 is prevented from entering the inside of the holder 10 through the hole 12 in the holder bottom wall pressed against or brought close to the surface of the cut medium 50.
As shown in FIG. 2, the compressed air circulating means 90 is compressed air generated from a compressor (not shown) or the like installed outside the holder 10 through an air hole 16 opened in the middle peripheral wall of the holder 10. Is sent through the inside of the flexible tube 92 and the like, and the compressed air is discharged to the outside of the holder 10 from the hole 12 on the bottom wall of the holder through the inner space of the holder 10.

The rest of the configuration is the same as that of the first cutter mechanism shown in FIG. 1. According to the cutter mechanism of this reference example , compressed air is supplied to the inner space of the holder 10 using the compressed air circulating means 90. Thus, the compressed air can be discharged out of the holder 10 through the hole 12 in the holder bottom wall. Then, the cut medium 50 generated from the vicinity of the cutting edge 22 of the cutter blade that is cutting the cut medium 50 is compressed by the air pressure of the compressed air discharged from the hole 12 of the bottom wall of the holder to the outside of the holder 10. Through the gap between the hole 12 in the bottom wall and the cutter blade 20 inserted through the hole, the holder 10 is prevented from entering the inside of the holder 10, and the space inside the holder 10 is passed through the gap between the hole 12 and the cutter blade 20. The chips that have entered can be forcibly discharged out of the holder 10 through the hole 12 in the holder bottom wall. Then, the bottom surface of the holder 10 and the bottom surface are pressed by the air pressure of the compressed air discharged from the holder 10 near the cutting edge 22 of the cutter blade to the outside of the holder 10 through the hole 12 in the holder bottom wall. It can be pushed out together with the compressed air through a small gap between the surface of the cut medium 50 that is in contact with or close to the surface of the cut medium 10 and eliminated. Then, the cutting blade clogs in the gap between the hole 12 on the bottom wall of the holder and the cutter blade 20 inserted through the hole, or accumulates in the inner space of the holder 10, so that the cutter blade 20 rotates smoothly. Can be reliably prevented from being hindered by chips.
Here, the compressed air may be continuously supplied to the inner space of the holder 10 by using the compressed air circulating means 90 while the cut medium 50 is cut by the cutter blade 20, or the inner space of the holder 10 may be supplied. The supply may be continued intermittently at a predetermined interval. In other words, the method for supplying compressed air to the inner space of the holder 10 using the compressed air circulating means 90 prevents the chips from entering the holder 10 or removes the chips that have entered the holder 10 from the holder bottom. Any method may be used as long as it can be discharged out of the holder 10 through the hole 12 in the wall.

  The first and second cutter mechanisms of the present invention include the above-described vertical and horizontal cutting plotters for cutting various media to be cut such as vinyl chloride sheets, sheets for producing stickers and stickers along a desired cut line. It can be widely used for a cutter mechanism that is used by being mounted on a head.

It is front sectional drawing of the 1st cutter mechanism of this invention. It is front sectional drawing of the 2nd cutter mechanism of this invention. It is a schematic structure explanatory drawing of a vertical cutting plotter. It is a schematic structure explanatory drawing of a horizontal type cutting plotter. It is front sectional drawing of the conventional cutter mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Holder 12 Holder bottom wall hole 14 Holder peripheral wall discharge hole 16 Holder middle peripheral wall air hole 20 Cutter blade 22 Cutter blade edge 30 Support rod 32 Blind hole 34 Pivot mechanism 36 Bearing mechanism 40 Retaining ring 50 Media to be cut 60 Platen 70 Head 80 Cut line 90 Compressed air circulation means 100 Cutter mechanism

Claims (1)

With the bottom of the bottomed cylindrical holder pressed against or in close proximity to the surface of the media to be cut, rotate the substantially rod-shaped cutter blade supported in the axial direction inside the holder at an appropriate angle around the axis. However, in the cutter mechanism of the cutting plotter that cuts the media to be cut by the cutting edge of the cutter blade that protrudes downward through the hole in the holder bottom wall,
Only the peripheral wall near the inner bottom surface of the holder, the cutting media generated near the cutting edge of the cutter blade that is cutting the cut media and entering the inside of the holder through the hole in the bottom wall of the holder is discharged outside the holder. A cutter mechanism of a cutting plotter, characterized in that a discharge hole is provided.

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