KR950005569Y1 - Head cleaning and holding device in ink jet printer - Google Patents

Abstract

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Description

Head cleaning and support device for ink jet printers

1 is a side view of a head device of a conventional ink jet printer.

2 to 6 is a view showing the configuration and operation of the head cleaning and support device according to the present invention, Figure 2 is an exploded perspective view.

3 is an assembled cross-sectional view of the printing state.

4 is a cross-sectional view taken along the line A-A of FIG.

5 is an assembled cross-sectional view of the post printing state.

6 is a cross-sectional view taken along the line B-B in FIG.

* Explanation of symbols for main parts of the drawings

1 driving means 2 home position sensor

3: guide plate 4: sponge

5 inkhead 5a insertion hole

5b: nozzle portion 5c: groove

6: rail screw 6a: groove

6b: coupling portion 6c: annular groove

6e: Coupling part 6f: Spiral groove

7: connecting gear 8: spring

9: Clutch Gear 9a: External Gear

9b: internal gear 11: gear

12: timing belt 14: gear

15: cap mechanism 15a: rack

15b: Cap 15c: Rubber

15d: head fixing plate 16: pinion

17: body frame 17a: pinion fixing groove

17b: guide 17c: insertion groove

The present invention is a head cleaning and supporting apparatus of an ink jet printer having a cleaning means for preventing contamination and clogging of an ink head nozzle in an ink jet printer and a supporting means for preventing the ink head from moving during non-factors. It is about.

In the conventional ink jet printer, as shown in FIG. 1, the ink head 21 is reciprocated by being fitted to the rail shaft 22, and when printed, the reference line A is provided by a home position sensor 25. In the non-factor, the ink head 21 comes to the initial position B of the head and the gap 23 fixed to the frame 24 blocks the nozzle portion 21a of the ink head 21. It is supposed to.

However, in the conventional apparatus as described above, the cap 23 is covered with the ink residue remaining in the nozzle portion 21a of the ink head 21 after printing, and the ink head 21 at the initial position B of the head. When the ink head is artificially moved, the ink head 21 is separated from the cap 23, and the ink is solidified as the nozzle part 21a is exposed to the air, thereby causing clogging of the nozzle part 21a. There was a fault.

The present invention is devised to solve the conventional defects as described above will be described in detail by the accompanying drawings as follows.

2 is an exploded perspective view of the head cleaning and supporting apparatus according to the present invention, FIG. 3 is an assembled cross-sectional view, and FIG. 4 is a cross-sectional view taken along line A-A of FIG.

In the drawing, 1 shows a driving means, and the rail screw 6 is installed to rotate by the driving force of the driving means 1, and the ink head 5 is mounted on the rail screw 6 as the rail screw 6 rotates. Linear movement in the axial direction of.

That is, the ink head 5 is inserted into the rail screw 6 so that the projection 5d formed inside the rail screw insertion hole 5a of the ink head 5 engages with the spiral groove 6f of the rail screw 6. As a result, the ink head 5 is reciprocated in the longitudinal direction of the rail screw 6 as the rail screw 6 rotates.

An annular groove 6a is formed at the end of the spiral groove 6f of the rail screw 6 so that when the protrusion 5d of the ink head 5 is inserted into the annular groove 6a, the ink head 5 no longer proceeds. It is not allowed.

The connecting gear 7 is fitted freely in the axial direction in the engaging portion 6b formed in the cross-section D-shape of the rail screw 6, and the outer tooth 9a and the inner tooth 9b are positioned in the annular groove 6c. Clear gear (9) having is inserted and the E ring 10 is inserted into the fixing groove (6d) is to prevent the separation of the clutch gear (9).

A spring 8 is inserted between the connecting gear 7 and the clutch gear 9 to elastically support the connecting gear 7, and the coupling part 6e formed in a D-shaped cross section at the end of the rail screw 6. ) Is connected to the gear 11 and the timing belt 14 fixed to the shaft of the motor 13. Therefore, the rail screw 6 rotates with the power of the motor 13.

A cap mechanism 15 is installed at one side of the motor 13, and the pin mechanism 16 is inserted into the guide portion 17b formed in the printer body frame 17 so as to be movable in a straight line, and the pinion 16 is inserted into the pinion fixing groove 17a. The pinion 16 is meshed with the rack 15a of the cap mechanism 15, and the pinion 16 is meshed with the outer tooth 9a of the clutch gear 9 on its upper side.

The cap mechanism release preventing plate 3 is inserted into and fixed to the insertion groove 17c of the main frame 17, and the upper bent portion of the release preventing plate 3 absorbs ink from the rubber 13c of the cap mechanism 15. A sponge 4 is attached.

In addition, a head fixing plate 15d is fixed to the side surface of the cap mechanism 15, and a groove 5c into which the head fixing plate 15d is inserted is formed on the bottom surface of the ink head 5.

The cap mechanism 15 is formed with guide grooves 5e on both sides thereof so that the guide portion 17b of the main body frame 17 is inserted to enable linear movement, and the pinion 16 has insertion portions at both ends thereof. 16a is formed and coupled to the pinion fixing groove 17a by a snap fit.

Referring to the effect of the present invention as described above is as follows.

At the time of printing, the power of the motor 13 is transmitted to the gear 14, the timing belt 12, and the gear 11, as shown in FIGS. 3 and 4, and the rail screw 6 rotates, thereby causing the ink head 5 to rotate. The ink head 5 reciprocates as the protrusion 5d inside the insertion hole 5a of the groove moves along the spiral groove 6f of the rail screw 6, and the ink position sensor 2 causes the ink head to reciprocate. (5), the home position sensor 2 does not move to the right.

At this time, since the clutch gear 9 swings around the annular groove 6c of the rail screw 6, the cap mechanism 15 does not move.

After printing, after some printing, the ink head 5 continues to move to the right end of the rail screw 6 when the preset time has elapsed in consideration of the contamination of the head nozzle portion 5b. The projection 5d of the ink head 5 is continued. Moves to the groove 6a of the rail screw 6, and the movement stops. At this time, the right rear portion 5e of the ink head 5 pushes the connecting gear 7 to overcome the force of the spring 8 and the clutch gear 9 Power is transmitted by engaging the inner tooth 9b of the crankshaft (9b). Accordingly, the outer tooth 9a of the clutch gear 9 drives the pinion 16 to thereby engage the rack 15a of the cap mechanism 15 engaged with it. By pushing forward the cap mechanism 15, the cleaning rubber 15c attached to the upper surface of the cap mechanism 15 wipes the nozzle 5b of the ink head 5, and the cap 15b blocks the nozzle 5b. The ink head 5 and the cap mechanism 15 are aligned by the number of steps of the motor 13 set in advance, but in consideration of physical acceptance, a guide installed as a preventive measure of the cap mechanism 15 is removed. By the sponge 4 of the plate 3, the ink adhering to the cleaning rubber 15c is absorbed. In this state, when the head fixing plate 15d formed on the cap mechanism 15 is inserted into the groove 5c of the ink head 5 in accordance with the operation of the cap mechanism 15, the ink head is covered with the cap 15b. Hold (5) to prevent unauthorized movement.

The present invention as described above is to move the cap mechanism by the rack and the pinion to perform capping and cleaning (single structure), the ink head is fixed very stably in the capped state It can eliminate the clogging caused by the solidification of ink caused by the force of detachment from the ink head cap part by physical force.The cleaning rubber can be attached to the cap mechanism to improve the printing quality by cleaning the nozzle of the ink head from time to time. The simplification of this method has the advantage of reducing the trouble caused by printing operation.

Claims (4)

The rail screw 6, the ink head 5 reciprocating in conjunction with the rail screw 6, the driving means 1 for rotating the rail screw 6, and the ink head 5 at the time of printing, A home position sensor 2 for controlling the drive means 1 to move on the left side, a cleaning rubber 15c for washing the nozzle 5b of the ink head 5 and a cam 15b for blocking the nozzle 5b are provided. Ink jet printer characterized in that it comprises a cap mechanism (15) provided and a power transmission means for transmitting power to drive the cap mechanism (15) to cap and wash when the ink head (5) is moved to the initial position of the head Head cleaning and support system. 2. The clutch gear (9) according to claim 1, wherein the power transmission means includes a clutch gear (9) having a coupling gear (7) and an inner and outer gear (9b) (9a) coupled to one side of the rail screw (6), and a clutch gear (9). And a pinion (16) connected between the rack (15a) of the cap mechanism (15), and a spring (8) inserted between the connecting gear (7) and the clutch gear (9). Head cleaning and support. A head fixing plate (15d) is fixed to one side of the cap mechanism (15), and a groove (5c) is formed in the bottom of the ink head (5) through which the head fixing plate (15d) is inserted. Head cleaning and supporting apparatus for ink jet printers. 2. The cap mechanism release preventing plate 3 is fixed to the insertion groove 17c of the main body frame 17, and the cap mechanism 15 is attached to the upper bent portion of the cap mechanism release preventing plate 3. An apparatus for cleaning and supporting a head of an ink jet printer, characterized by attaching a sponge (14) for absorbing ink in the rubber (15c).