JP2665158B2 - Paper guide device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper guide device used for a printer, and more particularly to a paper guide device provided immediately below a platen.

[0002]

2. Description of the Related Art Among paper guide devices used in printers, a conventional paper guide device provided immediately below a platen is fixed by screwing.

[0003]

As described above, since the conventional paper guide device is fixed directly below the platen by screwing, trouble occurs due to jamming of printing paper or sticking of tack paper. When a problem occurs, the user cannot remove it and recover it, and the maintenance staff must be called for recovery work, which takes a long time to recover. ing.

[0004]

The paper guide device of the present invention is provided vertically below the platen, guides the conveyance of the printing paper between the outer guide and the inner guide, and has slide bushes at the lower portions of both side surfaces. A paper guide, a guide rail for guiding the insertion / extraction motion of the paper guide by inserting the slide bush, and contacting both end surfaces of the side surfaces of the paper guide provided on the guide rail; Two guide pins for regulating the movable range, a pair of vibration isolating rubbers provided at the end of a frame provided in front of the paper guide and pressing the paper guide, and provided on the frame. A fixing member to which the anti-vibration rubber is mounted, a rack attached to a mechanical frame for fixing the guide rail, and having a tooth profile on an upper surface; A pinion rotatably mounted on the rack and having a tooth profile meshing with the tooth profile of the rack; a lever connected to the pinion and extending upward; and a support member mounted on the mechanical frame and supporting the paper guide. And a pin provided on the fixing member and inserted into the support member through the anti-vibration rubber and the paper guide, and further, the outer guide can be freely opened and closed with respect to the inner guide. It is.

[0005]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is a side view showing an operation state of the paper guide of the embodiment of FIG. (A) is a diagram showing a state when the insertion of the paper guide is completed,
FIG. 4B is a view showing a state in which the paper guide is being inserted, and FIG.
FIG. 2 is a side view showing the slide mechanism of the embodiment of FIG.

In FIG. 1, a paper guide 1 is provided vertically below a platen (not shown), and is formed by overlapping an outer guide 1c and an inner guide 1d. Both ends are bent at right angles to form the side 1
a, and has a bulge portion 1b at the center thereof. The inner guide 1d below the side surface 1a has
The slide bush 2 is mounted, and the slide bush 2 penetrates the outer guide 1c and protrudes to the outside thereof. Therefore, the outer guide 1c can rotate around the slide bush 2, and can open the outer guide 1c with respect to the inner guide 1d. The central portion of the inner guide 1d is bent stepwise to provide a gap between the inner guide 1d and the outer guide 1c. The printing paper is guided through the gap from the bottom to the top by passing the printing paper. The inner guide upper end 1h (see FIG. 3) at the upper end of the inner guide 1d is slightly outside (the printing mechanism 10) to facilitate discharge of the printing paper conveyed between the inner guide 1d and the outer guide 1c. ).

A pair of guide rails 4 mounted on the mechanical frames 8 on both sides and having a "-"-shaped guide groove 4a at the center thereof are fitted with slide bushes 2 corresponding to the respective guide grooves 4a. To guide the insertion / extraction movement of the paper guide 1 (details will be described later). The guide pin 3a provided at the center of the inner surface of the guide rail 4 is provided at
The side surface portion 1a of the paper guide 1 comes into contact with the end surface on the side where the bulge portion 1b is present, and the unevenness of the side surface portion 1a restricts the movement range of the paper guide 1. Further, the guide pin 3b provided on the upper surface of the inner surface of the guide rail 4 also comes into contact with the end surface of the side surface portion 1a of the paper guide 1 on the side opposite to the side where the bulge portion 1b exists, thereby restricting the movement range of the paper guide 1. I do.

A pair of anti-vibration rubbers 9 are respectively attached to both ends of a frame 7 provided in front of the paper guide 1 by fixing members 6, and press the front surface of the outer guide 1c of the paper guide 1. ing.

As shown in FIG. 4, a rack 11 having a tooth profile on the upper surface is fixedly attached to the mechanical frame 8 to which the guide rail 4 is fixed.
A fan-shaped pinion 12 having a tooth profile that meshes with the tooth profile of FIG. Pinion 12
Is connected to a lever 13 extending upward. Therefore, by rotating the pinion 12 by holding the tip of the lever 13 (arrow B), the frame 7 is moved in the front-rear direction (arrow C). Can be. These constitute a slide mechanism.

The support member 5 is fixed to each of the mechanical frames 8 on both sides by screws 15. The support member 5 penetrates through the vibration isolating rubber 9 and protrudes horizontally from the fixed member 6 into a hole 5a provided at the tip end thereof. A pin 14 that passes through the hole 1g of the guide 1 is inserted. Therefore, the paper guide 1 is sandwiched and supported by the vibration isolating rubber 9 of the mechanical frame 8 and the support member 5.

Next, the operation of the paper guide device configured as described above will be described.

The opening and closing of the outer guide 1c of the paper guide 1 is performed by manually moving the upper end of the outer guide 1c. That is, when the upper end of the outer guide 1c is moved in the direction of arrow D in FIG. 1 by hand, the outer guide 1c pivots about the slide bush 2 and can be easily opened. When closing the outer guide 1c, hold the upper end of the outer guide 1c by hand and move it in the direction opposite to the direction of arrow D in FIG. As a result, as shown in FIG. 2, the protrusion 1f provided on the side surface of the inner guide 1d is inserted into the hole 1e provided on the side surface of the outer guide 1c.
The outer guide 1c is fixed to the inner guide 1d.

The attachment / detachment of the paper guide 1 is performed as follows.

When the paper guide 1 is mounted, the pinion 12 is rotated by holding the end of the lever 13 shown in FIG. 4 and the frame 7 is moved in a direction to separate from the guide rail 4. At this time, the pin 14 of the fixing member 6
Has moved to a position away from the hole 5a of the support member 5. In this state, the slide bush 2 of the paper guide 1 is inserted into the guide groove 4a of the guide rail 4, and the paper guide 1 is pushed down until the slide bush 2 reaches the bottom of the guide groove 4a. FIG. 2A is a diagram showing the state at this time. On the way, as shown in FIG. 2B, the upper end 1h of the inner guide is closest to the print pin 10a of the print mechanism 10, but the movable range θ of the paper guide 1 is limited by the guide pins 3a and 3b. Therefore, the upper end 1h of the inner guide does not contact the print pin 10a. When the insertion of the paper guide 1 is completed, the pinion 12 is rotated by the lever 13 to move the frame 7 in a direction to approach the guide rail 4. As a result, the pin 14 of the fixing member 6 is inserted into the hole 5a of the support member 5 through the hole 1g of the paper guide 1, and the front surface of the outer guide 1c is pressed by the vibration-proof rubber 9 to fix the paper guide 1. .

When removing the paper guide 1, the procedure is reversed. That is, the pin 7 of the fixing member 6 is pulled out from the hole 1g of the paper guide 1 and the hole 5a of the support member 5 by moving the frame 7 by the lever 13 in a direction of separating from the guide rail 4, and the paper guide 1 is Pull up along the guide groove 4a. As a result, the paper guide 1 is connected to the printing pins 10 of the printing mechanism 10.
It can be removed without contacting a.

When a trouble occurs due to a jam of the printing paper or a sticking of the tack paper, the user removes and attaches the paper guide 1 according to the above-mentioned procedure, so that the maintenance person does not have to take care of the trouble. The trouble can be easily recovered by oneself.

In the above-described embodiment, the shape of the guide groove 4a of the guide rail 4 is formed in a "U" shape, but the shape of the side surface portion 1a of the paper guide 1 can be matched even if it is linear. By adopting the shape, exactly the same operation and effect can be obtained.

[0019]

As described above, in the paper guide device of the present invention, the paper guide can be vertically inserted and removed along the guide groove of the guide rail provided on the mechanical frame, and fixed at the position where the paper guide is inserted. The paper frame can be moved in the front-rear direction so that the paper guide can be fixed, so that the user can attach and detach the paper guide with his / her own hand when the printing paper is jammed or tack paper is stuck. Therefore, there is an effect that the trouble can be easily recovered without troublesome maintenance personnel, and therefore, there is an effect that the trouble recovery time can be shortened.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing one embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

3A and 3B are side views showing an operation state of the paper guide of the embodiment of FIG. 1, wherein FIG. 3A shows a state when the paper guide is completely inserted, and FIG. 3B shows a state in which the paper guide is being inserted; FIG.

FIG. 4 is a side view showing the slide mechanism of the embodiment shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paper guide 1a Side surface part 1b Swelling part 1c Outer guide 1d Inner guide 1e Hole 1f Projection 1g Hole 1h Upper end of inner guide 2 Slide bush 3a / 3b Guide pin 4 Guide rail 4a Guide groove 5 Support member 5a Hole 6 Fixing member 7 Frame Reference Signs List 8 Mechanical frame 9 Anti-vibration rubber 10 Printing mechanism 10a Printing pin 11 Rack 12 Pinion 13 Lever 14 Pin 15 Screw

Claims (2)

(57) [Claims] A paper guide which is provided vertically below a platen and guides the conveyance of printing paper between an outer guide and an inner guide, and has a slide bush at a lower portion of both side surfaces thereof; A guide rail that guides the insertion / extraction motion of the paper guide, and two guide pins provided on the guide rail and in contact with both end surfaces of the side portions of the paper guide to regulate a movable range of the paper guide, A pair of anti-vibration rubbers provided at an end of a frame provided in front of the paper guide and pressing the paper guide, a fixing member provided on the frame and mounting the anti-vibration rubber, A rack mounted on a mechanical frame for fixing the guide rail and having a tooth profile on an upper surface; and a rack rotatably mounted on the frame and mounted on the frame. A pinion having a tooth profile meshing with the tooth profile, a lever connected to the pinion and extending upward, a support member attached to the mechanical frame to support the paper guide, and the vibration isolating rubber provided on the fixed member And a pin inserted through the paper guide into the support member. 2. The paper guide device according to claim 1, wherein the outer guide is openable and closable with respect to the inner guide.