JPH0717492U - Cutting pen - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] No matter what sheet is used as the cutting sheet, the cutter may be caught in the sheet breaks or stick to the sheet, causing the sheet to break out of the holder and be damaged. To provide a cutting pen that can perform proper cutting without being worn. [Structure] Inside the holder portion 1 that holds the cutter 15 with magnetic force, an engaging hole 22 that engages with the lower side of the cutter 15 with the blade portion 17 of the cutter 15 inserted and a lower end portion of the holder portion 1 are provided. A blade removal prevention tool 21 having an engaging portion that engages with the peripheral portion of the provided protruding hole 9 is provided. Then, by engaging the engaging hole 22 and the engaging portion of the blade removal prevention tool 21 with the peripheral portions of the cutter 15 and the projecting hole 9, respectively, the blade portion 17 of the cutter 15 has a predetermined distance or more.
So that it does not protrude from the lower end of the.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cutting pen used in a cutting plotter for cutting a sheet or the like into an arbitrary shape.

[0002]

[Prior art]

 Conventionally, sheets have been cut into shapes such as letters and patterns and attached to windows of shops, etc., and cutting plotters have been used to cut such sheets. This cutting plotter is equipped with a cutting pen equipped with a cutter.The sheet is cut by moving the cutting pen forward, backward, left and right while the cutting edge of the cutting pen is pressed against the sheet. It is like this.

The applicant has already developed and applied for such a cutting pen as shown in FIG. That is, in the figure, reference numeral 1 denotes a cylindrical holder portion in which a flange portion 2 is provided so as to project on the circumference of the substantially central portion of the body portion, and along the circumference on the upper side of the small diameter portion 3 on the lower side. A groove portion 4 is provided, and an O-ring 5 is installed in this groove portion 4. A threaded portion 6 is engraved on the outer peripheral surface of the small-diameter portion 3 below the groove portion 4, and the threaded portion 6 is engraved with a threaded portion 7 on the inner peripheral surface thereof. Are screwed together. Reference numeral 9 is a projecting hole formed at the center of the bottom of the cap portion 8.

Reference numeral 10 denotes a hole formed in the center of the holder portion 1. A bearing 11 is press-fitted and fixed to the inner peripheral surface of the lower end portion of the holder portion 1, and a cylindrical spring pin 1 2 is provided on the inner peripheral surface of the upper portion. Is fixed. Reference numeral 13 is a columnar magnet disposed below the spring pin 12, and a pivot bearing 14 is magnetically attached to the lower side of the magnet 13. A bar-shaped cutter 15 is rotatably supported by the pivot bearing 14 and the bearing 11. The cutter 15 has a conical upper end. With the conical portion positioned in the center of the pivot bearing 14, the lower side is inserted through the center hole of the bearing 11, and the blade tip is inserted into the cap portion 8. Is projected from the lower end of the. Reference numeral 16 denotes a pressing pin for inserting the cutter which is inserted through the spring pin 12 and placed on the upper surface of the magnet 13.

The magnet 13 is attracted to the spring pin 12 by magnetic force and positioned below the spring pin 12, and the pivot bearing 14, the cutter 15 and the pressing pin 16 are attracted by magnetic force, respectively. Hold in position. Further, the cap portion 8 can change the protrusion amount of the blade portion 17 of the cutter 15 by rotating, and the O-ring 5 prevents the cap portion 8 from rotating during use. The amount of protrusion of the blade portion 17 is kept constant.

When the cutting pen is used, it is attached to the pen carriage of a plotter (not shown), and moves in the X-axis and Y-axis directions together with the pen carriage to cut the sheet. Has become.

[0007]

[Problems to be solved by the device]

 However, it is necessary to cut a plurality of lines, because the pattern or the like in the cutting as described above is often composed of complicated cutting lines. For this reason, when cutting, it is possible to cut one line, raise the cutting pen once to move it away from the sheet, move it to a specified position, and then drop it again onto the sheet to continue cutting. It is repeated. In such a case, if a thick sheet or a sticky sheet is used as the cutting sheet, the blade portion 17 of the cutter 15 may be caught in the sheet notch when the cutting pen is lifted, or the sheet may be scratched. As a result, the cutter 15 may come off the holder part 1. As a result, when the cutting pen is raised and moved to the next cutting position, the cutter 15 moves while dragging, which may cut a portion of the sheet that should not be cut or damage the sheet. Problem is occurring.

The present invention has been made in view of such circumstances, and the cutter is not pinched or stuck to the sheet regardless of the type of sheet such as thick sheet or adhesive sheet. The purpose is to provide a cutting pen that can perform proper cutting without coming off from the holder part.

[0009]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the cutting pen according to the present invention has a cutter having a blade portion formed at a lower portion thereof, and a blade portion of the cutter is inserted through a projecting hole provided at a lower end portion thereof to project from the lower end portion. A cutting pen for a cutting plotter comprising a holder for holding the cutter by magnetic force in a closed state, the engaging hole and the holder for engaging with the lower side of the cutter with the blade of the cutter inserted. A blade removal prevention tool having an engaging portion that engages with the peripheral portion of the projection hole of the duck portion is arranged on the lower side of the cutter in the holder portion, and the engaging hole and the engaging portion are respectively provided with the cutter or the engaging portion. By engaging with the peripheral portion of the protrusion hole, the blade portion of the cutter is prevented from protruding from the lower end portion of the holder portion for a predetermined distance or more.

[0010]

[Action]

 That is, the cutting pen according to the present invention is provided on the lower side of the cutter with a blade removal prevention tool having an engaging hole that engages with the lower side of the cutter and an engaging portion that engages with the peripheral portion of the protruding hole of the holder section. With the engagement part of the blade removal prevention tool engaged with the peripheral portion of the protruding hole of the holder part, the engagement hole of the blade removal prevention tool is engaged with the lower side of the cutter, so that the cutting edge of the cutter is The holder is designed so that it does not protrude from the lower end of the holder for more than a specified distance. Therefore, when cutting with a thick sheet or adhesive sheet, etc., even if the cutter is caught in a sheet cut or sticks to the sheet when raising the cutting pen, The blade edge of the cutter rises apart from the sheet when it stops coming off from the holder part at the specified distance.

Further, since the cutter of the cutting pen is held in the holder part by magnetic force, when the cutting pen is lifted and the blade part of the cutter moves away from the sheet, the magnetic force causes the cutter to naturally move to a predetermined position in the holder part. It will come back to the position. As a result, even if the blade of the cutter is pinched or stuck to the cut of the sheet, the cutter will be properly held by the holder during the next cutting. When lowering the cutting pen onto the sheet, the cutting edge of the cutter is accurately lowered to a predetermined position on the sheet. As a result, proper cutting will be performed, and no matter what kind of sheet is used, there will be no problem due to the cutter coming off the holder. Next, this invention will be described in detail based on embodiments.

[0012]

【Example】

 FIG. 1 shows a cutting pen according to an embodiment of the present invention. In this cutting pen 20, as shown in the drawing, a blade pullout prevention tool 21 is attached to the lower side of the blade portion 17 of the cutter 15 in the cap portion 8. The blade removal prevention tool 21 is made of a thin and light metal plate as shown in FIG. 2, and has a triangular engagement hole 22 in the center thereof. The engaging hole 22 is set to have a shape and size that allows the lower side of the blade portion 17 to be inserted therethrough, and is smaller than the lateral cross-sectional shape of the body of the cutter 15. It can be engaged with the lower end surface. Further, the diameter of the blade removal prevention tool 21 is set to be larger than the diameter of the projection hole 9 of the cap portion 8. When the blade removal prevention tool 21 is located on the bottom surface side of the cap portion 8, the projection hole 9 is closed. Thus, the outer peripheral side of the lower surface of the blade removal prevention tool 21 can be engaged with the peripheral portion of the projecting hole 9 in the bottom portion of the cap portion 8. The other configuration is the same as that of the cutting pen shown in FIG. Therefore, the same reference numerals are given to the same parts.

In this configuration, in order to cut the sheet, first, the cutting pen 20 is attached to the carriage of the cutting plotter (not shown). At this time, with the flange portion 2 of the holder portion 1 in contact with the grip portion of the carriage, the body portion of the holder portion 1 is gripped by the grip portion. Then, by rotating the cap portion 8, the protrusion amount of the blade portion 17 is adjusted, and when the protrusion amount becomes appropriate, the cutting plotter is started to cut the sheet (not shown).

Cutting is performed according to a program pre-installed in the cutting plotter. During that time, the cutting pen 20 moves along with the carriage in the X-axis and Y-axis directions, and After cutting one cutting line, it moves upward (Z-axis direction), moves to a predetermined position, and then descends onto the sheet again. Further, at that time, the blade removal prevention tool 21 follows the rotation of the cutter 15 and rotates together with the cutter 15.

In addition, during cutting, the blade portion 17 of the cutter 15 is sandwiched between the cuts of the sheet, and when the cutting pen 20 is lifted in that state, the blade punched under the cutter 15 is removed. As shown in FIG. 3, while the preventive tool 21 is in contact with the bottom surface of the cap portion 8, the engaging hole 22 thereof is engaged with the upper side of the blade portion 17 of the cutter 15 so that the cutter 15 does not move further. , To prevent it from coming out of the holder part 1. As a result, the cutter 15 moves upward together with the holder 1 away from the sheet.

As shown in FIG. 3, while the cutter 15 is being sandwiched between the cuts of the sheet, the upper side of the blade portion 17 engages with the engagement hole 22 of the blade removal prevention tool 21, and the upper end of the cutter 15 is engaged. The part is separated from the pivot bearing 14, but when separated from the seat, it is pulled up by the magnetic force of the magnet 13 and returns to the state shown in FIG. Therefore, when cutting the next cutting line, the blade tip of the cutter 15 is accurately positioned at a predetermined position on the sheet, and proper cutting can be performed.

To replace the cutter 15 when it is damaged or consumed, first rotate the cap portion 8 to remove it from the holder portion 1, and then remove the blade removal prevention tool 21 from the cutter 15. Then, the pressing pin 16 is pressed downward, the cutter 15 is pulled out, the new cutter 15 is inserted into the bearing 11, and the pressing of the pressing pin 16 is released. Then, the blade removal prevention tool 21 is attached to the cutter 15, and the cap portion 8 is attached to the holder portion 1.

As described above, in the cutting pen 20 according to the above-described embodiment, the blade removal prevention tool 21 is attached to the blade portion 17 of the cutter 15, and the blade tip of the cutter 15 does not protrude from the lower end portion of the cap portion 8 for a predetermined distance or more. I am trying. Therefore, as in the conventional example, when the cutting pen is raised, the cutter 15 slips out of the holder portion 1, and when the cutting pen is lowered next time, the blade tip of the cutter 15 does not move to a predetermined position. There is no damage to the seat or mistakes in cutting. As a result, the type of sheet to be cut is not limited by the thickness and characteristics of the sheet.

Further, since the blade removal prevention tool 21 is composed of a thin and lightweight disc body and is only placed on the bottom surface of the cap portion 8, the cutter 15 is rotated when cutting. Even if it moves, the blade removal prevention tool 21 rotates following the rotation of the cutter 15 without causing any trouble in cutting. Furthermore, since the blade removal prevention tool 21 only needs to be attached to the blade portion 17 of the cutter 15, it can be easily attached and replaced.

In the above embodiment, the blade removal prevention tool 21 is formed of a disc body having the engagement hole 22, but the blade removal prevention tool is fixed in advance to the blade portion of the cutter to be integrated. Maybe Further, a protrusion for engagement may be provided on the peripheral surface of the cutter, and the protrusion may be engaged with the engagement hole of the blade removal prevention tool 21. Further, the engagement portion of the blade removal prevention tool may be any as long as it can engage with the peripheral portion of the projection hole 9 of the cap portion 8. Further, the blade removal prevention tool 21 is not limited to a metal plate, and any material such as a hard resin material that can prevent the cutter 15 from coming off can be used.

[0021]

[Effect of device]

 As described above, since the cutting pen of this invention is configured, it is possible to prevent the cutter from coming out of the holder part. As a result, the cutter does not descend to the predetermined position, and mistakes in cutting and damage to the sheet do not occur. Further, this allows any sheet such as a thick sheet or a sticky sheet to be used as a cutting sheet.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a cutting pen according to an embodiment of the present invention.

FIG. 2 is a plan view showing the blade removal prevention portion.

FIG. 3 is a vertical sectional view showing a state where the cutter is about to come out.

FIG. 4 is a vertical sectional view showing a conventional cutting pen.

[Explanation of symbols]

 1 Holder Part 8 Cap Part 9 Projection Hole 13 Magnet 15 Cutter 17 Blade Part 20 Cutting Pen 21 Blade Removal Prevention Tool 22 Engagement Hole

Claims (2)

[Scope of utility model registration request] 1. A cutter having a blade portion formed at a lower portion, and a holder for holding the cutter by magnetic force in a state where the blade portion of the cutter is inserted into a protruding hole provided at a lower end portion and protruded from the lower end portion. A cutting pen for a cutting plotter, which has a plurality of engaging portions, the engaging portion engaging with a lower side of the cutter while the blade portion of the cutter is inserted, and the engaging portion engaging with a peripheral portion of a protruding hole of the holder portion. By disposing a blade removal prevention tool having a lower part of the cutter in the holder part and engaging the engaging hole and the engaging part with the cutter or the peripheral part of the projecting hole, respectively, the blade part of the cutter is predetermined. A cutting pen, characterized in that it does not protrude from the lower end of the holder portion for a distance or more. 2. The cutting pen according to claim 1, wherein the cutting-out prevention tool is formed of a brim-shaped body projecting around the lower side of the cutter.