JPH0126456Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an inserter mechanism in a cut printing machine that prints on a cut sheet, and in particular, a shutter mechanism temporarily locks the medium inserted from the medium insertion section, and a feed mechanism holds the medium. This relates to a mechanism for releasing the lock after being clamped.

Conventionally, in this type of inserter mechanism, the operation of clamping the medium by the feed mechanism and the operation of removing the locked shutter mechanism from the medium path cannot be synchronized well, or it is difficult to ensure synchronization. This was done using a complicated mechanism.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to construct a device that opens a shutter mechanism after a feed mechanism reliably clamps a medium using a simple mechanism, and to reliably position the medium at a predetermined position.

This will be explained below with reference to the drawings.

FIG. 1 is a side sectional view showing an embodiment of the present invention;
FIG. 2 is a sectional side view for explaining the operation, and FIG. 3 is a side view showing some details.

In FIG. 1, FIG. 2, and FIG. 3, 1 is a sheet guide having an insertion opening 1a for a medium (single sheet) 2;
3 has a locking portion 3a that temporarily locks the medium 2 inserted into the medium path below the sheet guide 1, and a through hole 3b provided in the side wall,
A shutter mechanism 6 rotatably supported by a shaft 4 and biased counterclockwise by a spring 5 is also rotatably supported by the shaft 4 on the outside of the shutter mechanism. , a pressure roller lever having a post on the outside of the side wall and whose tip extends through the side of the medium to the opposite side of the medium; 7 is a pressure roller provided at the tip of the pressure roller lever; 8 is a pressure roller lever; A feed roller is provided facing the pressure roller and on the opposite side to the medium, and is driven by a drive device (not shown); 9 is a limiter that prevents the shutter mechanism 3 from rotating beyond a predetermined limit; 10 is a drive 11 is a lever rotatably supported on a shaft 12, 13 is a first link member connecting one end of this lever 11 and the armature of the solenoid 10, and 14 is a post with one end attached to the other end of the lever 11. 15, the other end of which is rotatably connected to a long hole 14a that is loosely fitted into a post 6a planted in the side wall of the pressure roller lever 6, and a through hole 3b provided in the side wall of the shutter mechanism. Loosely fitted protrusion 14b
16 is a pressure spring that biases the pressure roller lever 6 toward the feed roller side; 17 is a second link member having the lever 11;
This is a spring that biases the counterclockwise direction.

Next, the operation of this embodiment configured as above will be explained.

First, in the initial state, the solenoid 10 is not excited. Therefore, the lever 11 is in a position rotated counterclockwise by the spring 17, and the second link member 14 is rotated to the right until the protrusion 14b at the tip abuts the edge of the through hole 3b. move towards

Accordingly, the elongated hole 14a pushes the post 6a and rotates the pressure roller lever 6 counterclockwise. By rotating the pressure roller lever 6 counterclockwise, the pressure roller 7 is separated from the feed roller 8. On the other hand, the shutter mechanism 3 is biased counterclockwise by a spring 5, and rotates counterclockwise to lock the locking portion 3a.
is allowed to enter the medium path and is stopped in contact with the limiter 9. When inserting the cut medium 2 from the medium insertion slot 1a in this state, the cut medium 2
enters between the pressure roller 7 and the feed roller 8 without being pinched, and is locked by the locking portion 3a. As a result, the initial position of the cut medium 2 is determined. In this state, the counterclockwise rotation of the shutter mechanism 3 is inhibited by the limiter 9, and the clockwise rotation is inhibited by the second link member 14.
This is suppressed by the protrusion 14b. Therefore, when the cut medium 2 is locked to the locking part 3a, the locking part 3a does not escape to the left or right, and the cut medium 2
The initial position of is stable.

Next, the solenoid 1 is
0 is excited, the first link member 13 moves upward and the lever 11 rotates clockwise against the attractive force of the spring 17. Therefore, the second
The link member 14 of the second link member 14 moves to the left, but at this time, first, the post 6a that was locked by the elongated hole 14a of the second link member 14 becomes movable to the left. pressure spring 1
The pressure roller lever rotates clockwise due to the restoring force of 6.

In this state, the post 6a is moved to the left while remaining in contact with the edge of the elongated hole 14a.

Eventually, when the pressure roller 7 comes into pressure contact with the feed roller 8 and securely clamps the medium 2, the pressure roller lever 6 can no longer rotate. Therefore, the post 6a moves away from the edge of the elongated hole 14a and the second link member 14 still moves to the left. Then, the projection 14b moves by the gap A shown in FIG. 3, engages with the edge of the through hole 3b, and rotates the shutter mechanism 3 clockwise.

Therefore, the locking portion 3a moves to the left and exits from above the medium path. This is detected by a sensor (not shown), and a drive mechanism (not shown) is driven to drive the feed roller 8.

Therefore, the medium 2 can be driven exactly by the desired amount.

As explained above in detail, the present invention is such that the cut medium inserted from the medium insertion part is once locked by the shutter mechanism, and the feed mechanism provided before the shutter mechanism securely secures the medium. By releasing the lock of the shutter mechanism after the medium is clamped, it is possible to reliably feed and position the medium to a desired position. Furthermore, in the initial state, since rotation of the shutter mechanism is inhibited when the medium is inserted, the initial position of the medium is stabilized.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing an embodiment of the present invention, FIG. 2 is a side sectional view for explaining the operation of FIG. 1,
FIG. 3 is a side view showing the details. 1... Sheet guide, 2... Single sheet medium, 3...
Shutter mechanism, 6...pressure roller lever,
7...Pressure roller, 8...Feed roller, 10...Solenoid, 11...Lever, 1
3, 14... link member.

Claims (1)

[Scope of Claim for Utility Model Registration] An insertion slot for a cut medium, a feed roller installed at the back of the insertion slot, a pressure roller installed opposite to the feed roller across the medium path, and a shaft centered on the feed roller. a shutter mechanism that is rotatable and has a locking part that enters the medium path and locks the leading edge of the medium at the back of the feed roller and has a through hole in the side wall; a first biasing member that causes the locking portion to enter the medium path; a limiter that inhibits rotation of the shutter mechanism by the first biasing member; and a limiter that is rotatable about the shaft. , a pressure roller lever having the pressure roller at its tip and a post on a side wall; one end connected to a drive source, a projection part loosely fitted into the through hole of the shutter mechanism, and the pressure roller lever having the pressure roller provided at the tip thereof and a post on the side wall; a link member provided with an elongated hole that is loosely fitted into the post of the shear roller lever; and a second attachment that is hung between the post of the pressure roller lever and the link member and urges the pressure roller toward the feed roller. In an initial state, the link member moves in a predetermined direction until its protrusion comes into contact with the edge of the through hole of the shutter mechanism, and the pressure roller separates from the feed roller, and the first The shutter mechanism is moved in a predetermined direction by the urging member until it comes into contact with the limiter, the locking part of the shutter mechanism enters the medium path, and the link member moves in the opposite direction. First, the pressure roller is moved toward the feed roller by the second biasing member, and when the movement of the pressure roller is suppressed by the feed roller, the protrusion of the link member is moved toward the opposite side of the through hole of the shutter mechanism. An inserter mechanism characterized in that the locking portion of the shutter mechanism is moved away from above the medium path by pushing the edge.