JP2598665Y2 - Printer unit cutter unit - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device for cutting a band-shaped object such as a tape.

[0002]

2. Description of the Related Art A printing device includes a handy type device which can easily print desired information at a desired place, and a device which is incorporated in an information processing device such as an electronic register or a facsimile and prints the desired information. is there. Such a printing device includes a cutting device that sequentially prints information on a tape wound in a roll shape and then cuts the printed tape at a predetermined location. Conventionally, as shown in FIG. 3, this cutting device is composed of a tape receiving table 2 on which a printed tape 1 is arranged, and an exchangeable cutter unit 3 which presses the tape 1 against the tape receiving table 2 to cut it. Has become.
The cutter unit 3 includes a unit main body 4 that can move in the direction of approaching and separating from the tape receiving table 2. A cutter blade 5 is attached to the unit main body 4, and guide rods 6 are provided on the unit main body 4 on both sides of the cutter blade 5. A tape retainer 7 through which the cutter blade 5 is inserted is attached to the guide rod 6 so as to be movable in the direction of coming and going with respect to the unit body 4, and the tape retainer 7 is always provided on the outer periphery of the guide rod 6.
A coil spring 8 is provided to urge the tip of the coil spring toward the front end. The tape 1 has a structure in which a release paper 1b is attached to a tape body 1a. In such a cutting apparatus, when the tape 1 is fed between the tape receiving table 2 and the tape holder 7 of the cutter unit 3 and the unit main body 4 is pressed toward the tape receiving table 2 in this state, the unit main body 4 The tape holder 7 approaches the pedestal 2, and the tape retainer 7 contacts the tape 1, and presses the tape 1 to the tape pedestal 2. Thereafter, when the unit main body 4 further moves against the spring force of the coil spring 8, the cutting edge of the cutter blade 5 is pushed out through the tape retainer 7, and the cutter blade 5 cuts the tape 1.

[0003]

However, in this conventional cutting apparatus, there is a danger that the cutting edge of the cutter blade 5 will be exposed from the tape presser 7 when the cutter unit 3 is replaced, thereby causing injury. Further, since the cutting edge of the cutter blade 5 is pressed against the tape receiving base 2, a notch is formed on the tape receiving base 2,
There is a problem that the sharpness is reduced even after long-term use.
This invention was made in view of the above circumstances, and its first
It is an object of the present invention to provide a cutting device which can be safely replaced without injuries at the cutting edge when replacing the cutter unit. A second object is to provide a cutting device in which the sharpness is hardly reduced even when the number of uses is increased.

[0004]

The present invention achieves the above object.
Printing media while transporting a long medium to be printed.
Of a printing device for printing on one surface of the medium to be printed by a step
Cutter unit detachably fixed in the print medium transport path
The cutter unit is attached to the printing device.
When printing, the print medium is brought into surface contact with the conveyed print medium.
A guide surface capable of guiding the conveyance of the printing medium, and
Along the guide surface along the direction that intersects the medium
A fixed member having a formed concave groove, and the fixed member
Having a facing portion facing the guide surface of
A transfer member connected to the fixed member so as to be able to contact and separate from the guide surface.
A moving member and the opposing portion of the moving member
A first biasing member that constantly biases in a direction away from the guide surface
And one end is pivotally supported so that they can be opened and closed with each other.
Fixed blades and movable blades that can be scissored by sliding the blade edge
And the cutting edge of the fixed blade is flush with the guide surface.
Scissors with the fixed blades arranged in the grooves on the guide surface
The cutting member and the movable blade of the scissor-like cutting member are always opened.
To bias the free end of the movable blade against the moving member.
A second urging member to be brought into contact with the portion, and an opposing portion of the moving member
At the guide surface so that it can retreat freely and
At least in the direction of the guide surface than the free end of the movable blade.
Always biased in the protruding direction via the third biasing member to protrude
The moving member moves toward the fixed member side.
A printing medium holding member capable of contacting the guide surface.
And moving the moving member with the first urging member and the second urging member.
Move to the fixed member side against the urging force of the member
By doing so, first the carrier is transported between the fixed blade and the movable blade.
The print medium holding member comes into contact with the print medium to be printed.
Then, the moving operation is performed against the urging force of the third urging member.
When the printing is continued, the printing medium pressing member is
The movable blade is pressed against the guide surface while the movable blade is
The printing member is closed through contact with the opposing portion of the moving member, and
It is characterized in that it is configured to scissor the medium.

[0005]

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2 show the bracket of the present invention .
It is sectional drawing of the cutting device as a data unit . This bracket
Data unit, transfer the first holding member 10 is a member to be fixed
A second holding member 11 which is a moving member . The first holding member 10 is intended to be fixed to the printing apparatus (not shown), as shown in FIG. 2 (a), transporting the tape 1 guide
Guide surface and how to transport the tape 1 at the center of the guide surface
A groove 12 is provided along a direction intersecting the direction, and a notch 13 is provided at the left and right ends of the guide surface. Second
The holding member 11 is disposed above the first holding member 10 so as to be opposed to the first holding member 10. As shown in FIG. Protrusions 15 are provided correspondingly, and are provided at substantially four corners of the lower surface so as to be removably inserted into the notches 13 of the first holding member 10 so as to protrude from the central protrusions 14 respectively. In the second holding member 11, the upper portions of the four connection shafts 16 planted at both ends of the notch 13 of the first holding member 10 are provided on the protrusions 15 at the four corners of the second holding member 11. The first holding member 1 is inserted into the guide hole 17 so as to be vertically movable.
It is connected so as to be able to approach and separate from 0. In this case, the first
A notch 13 of the holding member 10 on the outer periphery of the connecting shaft 16 between the four corners of the projection 15 of the second holding member 11, first with 1 to biased to push up the second holding member 11 is always
A coil spring 18 is provided as a biasing member .

On the other hand, as shown in FIG. 1, a fixed blade 20 is fixed in the concave groove 12 of the first holding member 10 with its cutting edge flush with the guide surface of the first holding member 10. A movable blade 21 is rotatably mounted on one end (right end in FIG. 1) of the fixed blade 20 by a shaft 22 with one end (similarly, right end) 21a of the fixed blade 20 overlapped therewith. Cutting
It constitutes a member . In this case, the movable blade 21 is
The other end portion (left end portion in FIG. 1) 21b of the movable blade 21 is constantly urged upward by a torsion spring (not shown) as a second urging member provided in the movable blade 21. For this reason, the other end 21 b of the movable blade 21 is always
Are arranged in a guide groove 14a provided in the central convex portion 14.

On the lower surface of the second holding member 11, two sets of two guide rods 25 are respectively suspended, and these guide rods 25 are provided with the tape 1 on the guide surface of the first holding member 10. A pair of tape holding plates 26 to be held down (to be printed
A medium press member) is mounted to be vertically movable. Each of the pair of tape pressing plates 26 is formed to have a size to be inserted between the central convex portion 14 and the left and right convex portions 15 so as to be removably inserted. A space is provided between the pair of tape pressing plates 26 that is substantially the same as or slightly larger than the width of the central convex portion 14, and the other end 21 b of the movable blade 21 is inserted through this space. Has become. Further, the outer periphery of each guide rod 25 between the upper surface of the pair of tape retainer plates 26 and the lower surface of the second holding member 11 has
As a third urging member that urges 6 to always push down
Of the coil spring 27 are respectively provided.

Next, a case where the tape 1 is cut by the cutting device will be described. First, as shown in FIGS. 1 and 2 (a), the second holding member 11 is separated above the first holding member 10, and the tape 1 is inserted between them so that the fixed blade 20 and the movable blade 21. In this state, the second holding member 11 is pressed downward to approach the first holding member 10 against the spring force of the coil spring 18 of each connection shaft 16. Then, since the second holding member 11 moves downward, the pair of tape pressing plates 26 moves downward, and the other end 21b of the movable blade 21 moves to the second position.
The movable blade 21 is pushed down while moving along the guide groove 14 a of the central convex portion 14 of the holding member 11, and the movable blade 21
It starts to rotate toward the fixed blade 20 around the shaft 22 of a.

When the second holding member 11 moves further downward, as shown in FIG. 2 (b), a pair of tape holding plates 26 abut on the tape 1 to move the tape 1 to the first holding member 1
At the same time, the movable blade 21 further rotates and the fixed blade 20 and the movable blade 21 start cutting the tape 1. In this state, when the second holding member 11 further moves downward, as shown in FIG.
The coil spring 27 is compressed, and the tape holding plate 26 reliably presses the tape 1 against the upper surface of the first holding member 10 by the spring force thereof, and the movable blade 21 further rotates so that the blade edge of the fixed blade 20 and the movable blade The cutting edge 21 is rubbed against the cutting edge, whereby the tape 1 is cut. After the tape 1 has been cut in this manner, as shown in FIG. 2D, the pair of tape pressing plates 26 are formed by the central convex portion 14 of the second holding member 11 and the convex portions 15 at the four corners. Inserted between the central projections 14
Abuts on the tape 1 on the first holding member 10, so that the second
The downward movement of the holding member 11 is stopped. At this time, the cutting edge of the movable blade 21 is inserted into the concave groove 12 of the first holding member 10, but does not contact the bottom of the concave groove 12.

Thereafter, when the user removes his / her hand from the second holding member 11, as shown in FIG. 1 and FIG.
The second holding member 11 returns to the original initial position by the spring force of the coil spring 18 of No. 6, and returns to the original initial position by the spring force of the coil spring 27 of the guide rod 25. At this time, since the movable blade 21 is biased by the torsion spring, the other end 21 b
Are the guide grooves 14a of the central convex portion 14 of the second holding member 11.
It moves upward while moving inside and returns to the original initial position.

As described above, in this cutting device, the fixed blade 2
When the cutting edge of the movable blade 21 and the cutting edge of the movable blade 21
, The cutting edge of the fixed blade 20 and the cutting edge of the movable blade 21 are not pressed against a tape receiving base or the like as in the conventional cutter blade. A product having excellent properties can be obtained. In this case, when the movable blade 21 starts cutting the tape 1, the tape 1 is pressed by the tape pressing plate 26 provided on the second holding member 11 to the upper surface of the first holding member 10. It can be cut well. In addition, since the second holding member 11 is connected to the first holding member 10 so as to be able to contact and separate from the first holding member 10, the whole thereof is unitized. Since it is not exposed, it can be replaced safely without injury.

[0013]

As it has been described above devised], according to the invention, without exposing between the fixed member and detachably linked movable member, and the outer surface of the fixed member and the moving member Since scissor-shaped cutting members are provided, they are unitized as a whole, and when these are entirely replaced, the cutting blades are not exposed to the external surface, so they can be safely replaced without injury by the cutting blades can do. In addition, the solid
A groove is formed on the guide surface of the fixed member ,
Place the fixed blade on the guide surface so that the edge is flush with the guide surface.
It is arranged in a concave groove, and the movable blade is openable and closable on this fixed blade at one end.
And the edges of the blades rub against each other during the opening operation of the movable blade.
With the scissor-shaped cutting member structure capable of scissor cutting operation ,
Since the cutting edge of the cutting edge and the movable blade of the fixed blade is prevented from pressed like a tape pedestal as in the conventional cutting blade, a long period of time hardly lowered sharpness be used, <br/> durability of the cutter unit Can be improved . Also, in the moving member ,
The indicia when the scissors cutting member initiates cutting of the print media
By the structure of providing the printing medium pressing member for pressing the shaped medium guide surface, can be-printed medium pressing member during cutting is cut in a state of fixing the printing medium, the
The printing medium can be cut reliably and well.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a cutting device of the present invention.

FIG. 2 is a left side view of FIG. 1, in which (a) is a left side view in a state where a tape is arranged between a first holding member and a second holding member;
(B) is a left side view of a state in which the second holding member is pressed down and the cutting of the tape by the fixed blade and the movable blade is started.
(C) is a left side view showing a state where the tape is being cut by the fixed blade and the movable blade, and (d) is a left side view showing a state when the cutting is completed.

FIG. 3 is a sectional view of a conventional cutting device.

[Explanation of symbols]

 Reference Signs List 1 tape 10 first holding member 11 second holding member 12 concave groove 16 connecting shaft 20 fixed blade 21 movable blade 21a one end of movable blade 21b other end of movable blade 26 tape pressing plate

Claims (1)

(57) [Scope of request for utility model registration] And a printing means for conveying a long printing medium.
To print on one side of the printing medium by the printing apparatus.
Cutter unit that is detachably fixed in the print medium transport path
And When the cutter unit is attached to the printing device,
Transfer of the print-receiving medium in surface contact with the print-receiving medium
Guide surface capable of guiding
Grooves formed in the guide surface along a direction intersecting with
A fixed member having: Having a facing portion facing the guide surface of the fixed member,
The opposed portion is attached to the fixed member so as to be able to contact and separate from the guide surface.
A connected moving member, Is the facing portion of the moving member a guide surface of the fixed member?
A first biasing member that constantly biases in a direction away from the first biasing member; One end is pivotally supported so that it can open and close each other.
It consists of a fixed blade and a movable blade that can scissor
So that the cutting edge of the fixed blade is flush with the guide surface.
Scissor-shaped cutting in which the fixed blade is disposed in a groove in the guide surface
Components, The movable blade of the scissors-shaped cutting member is always urged in the opening direction.
The free end of the movable blade is brought into contact with the opposing portion of the moving member.
A second biasing member, Projecting and retreating toward the guide surface at the opposite part of the moving member
Freely supported, at least from the free end of the movable blade
Through the third urging member to protrude in the direction of the guide surface.
The fixed portion of the moving member is always urged in the protruding direction.
Printing medium that can contact the guide surface by moving to the material side
Body holding member, and The first urging member and the second urging member move the moving member.
Moving to the fixed member side against the urging force of
Is transported between the fixed blade and the movable blade first.
The print medium holding member abuts on the print medium,
Thereafter, the moving operation continues against the urging force of the third urging member.
When the printing medium holding member is pressed,
The movable blade presses against the guide surface while the movable blade moves.
The print-receiving medium is closed through contact with the opposing portion of the material;
Of a printing device characterized by being configured to cut off
Cutter unit.