JPH08168991A - Cutting device for print media - Google Patents

Abstract

(57) [Abstract] [Purpose] To enable replacement of a cutting device 16 for cutting a printed tape 6 in a printing tape creating device without risk. [Structure] The cassette case 5 has a receiving surface 15 which faces when the tape 6 passes, and a support shaft 17 standing upright in the vicinity of the receiving surface 15 is provided with a holding member 19 for rotatably holding a cutting blade 18. A supporting member 20 which is slidably supported integrally at a sliding portion is detachably mounted, and a torsion coil spring 21 loosely fitted to the supporting member 20 urges the holding member 19 to cut the blade 18. Is pulled into the sliding part. The pressing blade 33 of the rotary operation lever 7 rotatably mounted on the support shaft 17 presses the cutting blade 18 toward the receiving surface 15 via the holding member 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a printing unit such as a thermal head, a platen, and a tape conveying means, and an image such as a character or a graphic is recorded on a tape-shaped print medium according to data inputted in advance. The present invention relates to a configuration of a print medium cutting device provided in a print tape creating device for printing.

[0002]

2. Description of the Related Art The applicant of the present invention has previously filed Japanese Utility Model Laid-Open No. 4-89359.
In the publication, a printing tape producing apparatus for displaying a receptor type label is proposed. This device is configured such that a cassette case that stores a printing tape that is a print medium and an ink ribbon can be detachably attached to a cassette housing portion of a printing tape creating apparatus, and the cassette housing portion includes: A printing unit equipped with a thermal head,
A roller-shaped platen that comes into contact with and separates from the printing unit, a winding means for the ink ribbon, and the like are provided, and the tape is pulled out from the cassette case at an appropriate speed based on the data previously input to the printing tape creating apparatus. An image such as a character string is printed on the tape, and a cutting device for cutting the printed tape into a predetermined length is provided.

In this tape cutting device, the outlet surface of the printed printing medium in the tape cassette case containing the printing medium and the ink ribbon is used as the receiving surface of the cutting edge of the cutting blade. It is of a type in which a passing tape-shaped print medium is so-called pushed by a cutting blade, and the cutting is performed on a rotary support shaft arranged in parallel with a support shaft of a rotary operation lever provided in a printing tape making apparatus. A support member having a blade is rotatably mounted, fan-shaped meshing teeth are formed on the support member and the rotation operation lever, and the support member is rotated by the rotation of the rotation operation lever. The blade was moved to cut the print medium.

According to this structure, when the sharpness of the cutting blade is deteriorated, the cutting blade is replaced integrally with the supporting member without touching the cutting blade with a user's finger, so that the cutter has a special structure. The attachment is used to pull it out from the pivot shaft.

[0005]

However, according to the above-mentioned prior art, it is safe if the used cutting blade and the supporting member are discarded together with the cutter attachment, but a new cutting blade and supporting member are provided. After mounting the cutter attachment on the rotating spindle, the removed cutter attachment must be stored until the next replacement, and the cutting blade is exposed on the support member, so the cutter attachment is lost. For example, when the cutting blade is replaced, the finger is easily touched, and when only the cassette case is replaced, since the cutter attachment is not used, there is a risk that the always exposed cutting blade may injure the finger.

The present invention has been made to solve the above-mentioned problems, and cuts a highly safe printing medium to prevent injury from the cutting blade when exchanging the cutting blade or replacing the cassette case. The purpose is to provide a device.

[0007]

In order to achieve the above object, a cutting device for a printing medium according to the invention of claim 1 comprises:
A device for cutting a print-receiving medium after the tape-like print-receiving medium is conveyed to a printing unit in a print tape creating apparatus, the cutting blade pressing against a receiving surface facing when the print-receiving medium passes. A holding member that holds the cutting blade, a support member that integrally slidably supports the holding member and the cutting blade, and a cutting blade that is biased backward into the support member through the holding member. An elastic force urging member and a lever that rotates near the support member and presses the holding member to press the cutting blade toward the receiving surface are provided.

According to a second aspect of the present invention, the support member and the lever according to the first aspect are detachably mountable and rotatable with respect to one support shaft. According to a third aspect of the present invention, in the device for cutting a print-receiving medium according to the first or second aspect, a cover portion that covers both ends of the cutting blade is provided at a sliding portion of the support member, and a holding member. Is provided with a protrusion that allows the cutting blade to be rotatable and cannot be removed.

[0009]

Next, an embodiment of the present invention will be described. FIG. 1 is a schematic plan view of the printing tape making apparatus 1, and FIG. 2 is a perspective view of a main part of a cassette case and a cutting device. On the upper surface of the upper case 3 that fits into the lower case 2 of the printing tape making apparatus 1, a keyboard 4 on which keys for inputting a power switch, characters, etc., and various operation keys are arranged, and input characters and A display unit (not shown) such as a liquid crystal for displaying operation instructions is arranged, and a mechanical mechanism unit and a microcomputer (not shown) for control are built in between the upper and lower cases 3 and 2.

On the lower surface side of the lower case 2, although not shown,
A cover body is provided which can be opened and closed so as to detachably accommodate a cassette case 5, which will be described later, and which covers an accommodation portion. Further, on one side of the upper and lower cases 3 and 2, a rotation operation lever 7 for cutting the printed tape 6 while being pulled out from the cassette case 5 is arranged so that its free end side is exposed.

Next, the structure of the transporting means for the tape 6 and the printing portion will be described. The frame 9 arranged at the position where the cassette case 5 is arranged has a support plate 10a for the printing portion 10, a drive motor 14 and a platen. A pivot shaft 13 for the holder 12 and a support shaft 17 for a cutting device 16 described later are mounted. In a cassette case 5 made of synthetic resin, a tape 6 made of thermal paper, which is an example of a print target medium, wound around a reel and housed, is drawn out from an outlet 8 at one side end of the cassette case 5 to perform printing. The tape 6 is inserted between the printing unit 10 including a thermal head for performing the heating and the platen roller 11 that comes into contact with and separates from the heating element 10b of the thermal head. When the housing cover is closed, the platen holder 12 having the platen 11 is pivotally supported by a link and a tension spring.
The tape 6 is pressed and pinched by the platen roller 11 toward the heating element 10b. In this state, when the platen 11 is driven by the drive motor 14 via a gear mechanism (not shown), the tape 6 passes between the receiving surface 15 on one side of the cassette case 5 and the cutting device 16 to move up and down. It is discharged to the outside from a discharge portion opened to one side of the cases 3 and 2.

Next, the construction of the cutting device 16 for cutting the fed tape 6 in the width direction will be described with reference to FIGS. Cutting device 16 of the present embodiment
Is a receiving surface 5a of the cassette case 5 when the tape 6 passes in the direction of arrow A in FIG.
Cutting blade 1 for pressing to cut so-called push cut
8 and a plate-shaped holding member 1 for holding the cutting blade 18.
9, a supporting member 20 for slidably supporting the holding member 19 together with the cutting blade 18, and an elastic urging member for elastically urging the cutting blade 18 so that the cutting blade 18 can always be drawn into the supporting member 20. A torsion coil spring 21 and a rotary operation lever 7 and the like, and a holding member 19 and a supporting member 20.
The rotation operation lever 7 is an injection-molded product made of a synthetic resin material.

The cutting blade 18 has a substantially rectangular shape and is a single-edged blade, and a round hole 22 for mounting is formed in the middle of the wide surface. On the surface of the holding member 19, a protrusion 23 that is fitted in the round hole 22 of the cutting blade 18 and is rotatable is provided.
Further, when the cutting blade 18 rotates about the location of the projection 23, streak-shaped contact portions 24, 24 are provided so as to reduce the frictional portion with the surface of the holding member 19, and at least a predetermined angle or more is provided. Stoppers 25 and 2 that prevent rotation
5 are provided.

On the other hand, on the support member 20, a pair of upper and lower sliding portions 26, 26 on which the cutting blade 18 and the holding member 19 can integrally slide are opened toward the receiving surface 15 of the cassette case 5. Thus, one side of each sliding portion 26 serves as a cover portion 27 that covers the wide surface of the cutting blade 18. The back portion 19a of the holding member 19 is exposed between the pair of upper and lower cover portions 27, 27. The support member 20 includes a support shaft 1 protruding from the frame 9.
7, a substantially cylindrical boss portion 28 that is rotatably fitted is integrally projected, and the coil portion of the torsion coil spring 21 is loosely fitted to the outer periphery of the boss portion 28 and twisted. Coil spring 2
The one end 21 a of the No. 1 is the receiving surface 15 of the support member 20.
And the other end 21b of the torsion coil spring 21 is locked in a locking hole 30 formed in the back portion 19a of the holding member 19, The holding member 19 is always retracted to the inner side of the sliding portions 26, 26, so that the blade surface 18a of the cutting blade 18 is elastically biased so as to be hidden in the cover portions 27, 27.

Further, the elastic piece 28a formed by partially cutting out the boss portion 28 is provided with a protrusion (not shown) fitted to a step portion 31 (see FIG. 6) formed in a recess at the end of the support shaft 17. )
Is provided so that the support member 20 does not accidentally fall off the support shaft 17. It should be noted that the rotation operation lever 7 has a base end side of the support shaft 17 (frame 9).
Side)) is provided with a boss portion 32 having a hole 32a to be fitted thereinto, and when the rotation operation lever 7 is rotated in the direction of arrow B in FIG. A pressing piece 33 for pressing the back portion 19a of the holding member 19 toward the receiving surface 15 is integrally projected.

Further, when the tape 6 is cut, the turning operation lever 7
Since the cutting blade 18 is pressed at a right angle with respect to the receiving surface 15 by an external force from, the metal frame 9 is bent and raised so as not to retract the cassette case 5 at this time, and the cutting blade 18 is almost perpendicular to the receiving surface 15. A mounting hole 35 into which a cassette receiving member 34 that is long in the direction is fitted is formed in the cassette case 5, and the cassette receiving member 34 is configured to receive the external force.

With the above configuration, the printing tape making apparatus 1
When the print command switch is pressed after inputting a character or the like to be printed by the keyboard 4 of No. 4, a voltage is applied to the heating element 10b of the printing unit 10 and the drive motor 14 is driven.
The tape 8 made of thermal paper is sent out toward the receiving surface 15 by the rotating platen roller 11 while being printed by the printing unit 10.

After the completion of printing, when the rotation operation lever 7 is rotated in the direction of arrow B in FIG.
The back portion 19a of the holding member 1 is pushed toward the receiving surface 15 and the holding member 1
9 is moved along the sliding portion 26, and the blade surface 18a of the blade 18 projects from the end surface of the support member 20 to press the tape 6 against the receiving surface 15 of the cassette case 5. You will be disconnected. Since the external force at this time is firmly received by the cassette receiving member 34, the cutting of the tape does not become incomplete. Further, as shown in FIG. 3 and FIG. 5, the cutting blade 18 becomes rotatable around the position of the protrusion 23 in the holding member 19, and the cutting edge of the cutting blade 18 causes the cutting surface of the receiving surface 15 of the cassette case 5 to move. When the positioned tape 6 is pushed and cut, the cutting edge 18 runs parallel to the tape 6 and thus the surface of the receiving surface 15, and the cutting edge does not hit one side, so that the tape 6 can be completely cut in the width direction.

Since the turning direction of the turning operation lever 7 during the cutting operation is a direction to approach the lateral side surfaces of the upper and lower cases 3 and 2, if the lateral width dimension of the upper and lower cases 3 and 2 is reduced, the printing tape can be handled with one hand. There is an effect that a tape cutting operation can be performed while holding the creating apparatus 1. When the external force applied to the rotating operation lever 7 is removed, the holding member 19 is elastically biased by the biasing force of the torsion coil spring 21 so as to be drawn into the sliding portion 26 of the support member 20, so that the cutting blade 18 Blade face 18
a is not exposed from the support member 20, and therefore, when the cassette case 5 is replaced, even if a user's finger is brought close to the cutting device 16, no injury is caused.

When the cutting blade 18 becomes dull, when the support member 20 is pulled out along the support shaft 17, the protrusion of the elastic piece 28a in the boss portion 28 comes off the step portion 31, and the cutting blade 18 is easily cut. Can be exchanged for. If the boss portion 32 of the rotation operation lever 7 is fitted to the base end side of the support shaft 17 and the boss portion 28 of the support member 20 is fitted to the free end side of the support shaft 17, the rotation operation can be performed. Since the support member 20 can be removed without removing the lever 7, the replacement work of the cutting blade 18 becomes easier.

Further, the printing medium (tape) cutting device of the present invention is a device for cutting a printing tape which uses a cassette case (not shown) in which an ink ribbon and a tape are incorporated to cover both upper and lower surfaces. It is also applicable to the laminated type print medium, that is, after printing the mirror character on the back side of the transparent tape through the ink ribbon in the printing section,
It goes without saying that the same can be applied to the case where the double-sided adhesive tape is adhered to the printed surface and the laminate type printing medium is cut into a predetermined length.

[0022]

As described above, claim 1
The apparatus for cutting a print medium according to the invention described in 1 is a device for cutting the print medium after the tape-shaped print medium is conveyed to the printing portion in the printing tape creating apparatus, and the print medium passes through. A cutting blade that is pressed toward a receiving surface facing each other, a holding member that holds the cutting blade, and a support member that integrally slidably supports the holding member and the cutting blade,
An elastic biasing member that biases the cutting blade backward into the support member via the holding member, and a rotation in the vicinity of the support member to push the holding member to move the cutting blade toward the receiving surface. And a lever for pressing.

Therefore, the cutting blade, together with the holding member, is always retracted into the support member and is not exposed to the outside due to the force of the elastic biasing member, so that the user's finger does not touch the cutting blade when replacing the cassette case. There is no risk of touching the blade edge, and also when exchanging the cutting blade, the holding member and the cutting blade may be removed integrally with the support member in a state where they are not exposed,
After all, it has the effect of eliminating the risk of finger injury.

According to a second aspect of the present invention, the support member and the lever according to the first aspect are detachably mountable and rotatable with respect to one common support shaft. Therefore, in addition to the function and effect of the invention of claim 1, the mounting positions of both members are compact. According to a third aspect of the present invention, in the device for cutting a print-receiving medium according to the first or second aspect, a cover portion that covers both ends of the cutting blade is provided at a sliding portion of the support member, and a holding member. Is provided with a protrusion that allows the cutting blade to be rotatable and cannot be removed.

Therefore, since both ends of the cutting blade retracted into the support member are covered with the cover portions, the chances of the user's finger touching are further reduced, and safety is improved.
Further, when the cutting blade does not accidentally slip out of the holding member due to the projection, and when the cutting edge of the cutting blade is pressed against the receiving surface, the cutting edge is rotated around the projection edge so that the entire cutting edge evenly contacts the receiving surface. Therefore, the tape-shaped print medium can be cut cleanly all at once.

[Brief description of drawings]

FIG. 1 is a plan view of a printing tape producing apparatus of the present invention.

FIG. 2 is a perspective view of a part of a cassette case and a cutting device.

FIG. 3 is a perspective view of a supporting member, a holding member and a cutting blade in the cutting device.

FIG. 4 is a perspective view of a rotation operation lever.

5 is a cross-sectional view taken along the line VV of FIG.

6 is a sectional view taken along the line VI-VI of FIG.

[Explanation of symbols]

 1 Printing Tape Making Device 5 Cassette Case 6 Tape as Printed Medium 7 Rotating Operating Lever 10 Printing Part 15 Receiving Surface 16 Cutting Device 17 Support Shaft 18 Cutting Blade 19 Holding Member 20 Supporting Member 21 Twisting Coil Spring 26 Sliding Part 27 cover part 33 pressing piece 34 cassette receiving member 35 mounting hole

Claims (3)

[Claims] 1. A device for cutting a print-receiving medium after the tape-like print-receiving medium is conveyed to a printing section of a print-tape producing device, the device facing a receiving surface facing the print-receiving medium when passing through the print-receiving medium. A pressing blade, a holding member that holds the cutting blade, a support member that integrally slidably supports the holding member and the cutting blade, and a cutting blade inside the supporting member via the holding member. An elastic biasing member for biasing backwardly, and a lever that rotates in the vicinity of the support member and pushes the holding member to push the cutting blade toward the receiving surface. Cutting device for print media. 2. The device for cutting a print medium according to claim 1, wherein the support member and the lever are configured to be detachably mountable and rotatable with respect to one support shaft. . 3. The sliding portion of the support member is provided with a cover portion that covers both end portions of the cutting blade, and the holding member is provided with a protrusion that allows the cutting blade to be rotatable and cannot be removed. The device for cutting a print-receiving medium according to claim 1 or 2, characterized in that.