JPS62284776A - Horizontally feeding mechanism for printer - Google Patents

Abstract

PURPOSE:To enhance accuracy of positioning while using a simple mechanism, by moving a movable member on a guide shaft by driving a rotary-type motor so fixed as to have a rotary shaft in a direction orthogonal to the moving direction of the movable member. CONSTITUTION:A gear 4 is coupled directly to a shaft 3 of a rotary-type motor 2 fixed to a movable member 1. When the gear 4 is rotated by a driving current supplied through a motor winding terminal 9, the gear 4 is linearly moved on a linear guide shaft 5 provided with grooves 6. Since the guide shaft 5 and a support shaft 7 are fixed on a frame 10, the movable member 1 is horizontally moved on the guide shaft 5. The movable member 1 is fixed to a slide shaft 8, which is slidden on the support shaft 7, whereby the movable member 1 is moved while being stably supported.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transverse feed mechanism for a printer driven by a rotary motor.

[Conventional technology]

Conventionally, as shown in FIG. 2, the transverse feed mechanism of this type of printer has a gear 4 or a pulley 11 directly connected to a shirt l-3 of a rotary motor 2 fixed on a frame (10) of the printer. , 12, etc., by driving the wire lobe or belt 14 to move the movable member 1 carrying the printing gutter or ink ribbon, or the third
As shown in the figure, there is one in which a linear pulse motor is used, the movable member 1 is directly fixed to the linear pulse motor movable part 16, and the movable member 1 is moved on the slider part 15 of the linear pulse motor.

[Problem that the invention seeks to solve]

In the above-mentioned conventional printer transverse feed mechanism, those driven by wire lobes or belts have many gears, pulleys, etc., making the mechanism complicated, and the tension of wire lobes and belts changes depending on the surrounding temperature. There were disadvantages in that stable operation was not guaranteed, the rotation angle of the motor did not match the amount of movement of the movable member, and the printing quality was poor, such as the printing position becoming inaccurate.

Furthermore, in a transverse feed mechanism using a linear pulse motor as the drive source, the pitch of the motor teeth and the pitch of the slider teeth are 1.
:1, so if you want to reduce the horizontal feed pitch,
Naturally, the pitch of the teeth of the motor and slider must be made small, and high-precision machining is required, which has the drawback that the required precision may not be achieved, or even if it can be achieved, it will be very expensive.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate these drawbacks and provide a printer lateral feed mechanism that is simple, has good positioning accuracy, and is inexpensive.

[Means for solving problems]

The configuration of the present invention is such that, in a lateral feed mechanism of a printer that prints on a recording medium while laterally moving a movable member to which a print head is fixed, A rotary motor fixed to have a rotating shaft, a gear provided on the rotating shaft of the rotary motor, and a groove meshed with the gear, fixed on the printer frame in the moving direction. and a grooved guide shaft, and the supplementary movable member is moved on the guide shaft by rotationally driving the rotary motor.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a perspective view of a schematic mechanism showing one embodiment of the present invention. In the figure, 1 is a movable member that serves as a pedestal on which a print head, ribbon, etc. are placed. A gear 4 is directly connected to the shaft 3 of a rotary motor 2 fixed to the movable member l, and when the gear 4 is rotated by the drive current from the motor winding terminal 9, the gear 4 is shaped like a straight line with a groove 6. It moves linearly on the guide shaft 5. These guide shafts 5
, the support shaft 7 is fixed to the frame 10. Therefore, the movable member 1 moves laterally on the guide shaft 5. At this time, the movable member 1 is fixed to the slide sleeve 8, and the slide sleeve S slides the support member 1 on the support shaft 7, so that the movable member 1
moves while being stably supported.

Further, the rotary motor 2 may be a pulse motor or a DC servo motor, but if a DC servo motor is used, some kind of position sensor mechanism directly connected to the motor shaft 3 is required.

〔Effect of the invention〕

As explained above, the present invention fixes the rotary motor 2 on the movable member 1, and rotates the movable member 1 by rotating the gear 4 directly connected to the motor shaft 3 on the grooved guide shaft 5. Can move in a straight line. Therefore, without using transmission mechanisms with unstable elements such as wire ropes and belts, and without using expensive linear pulse motors, etc., it is possible to use a simple mechanism that provides good positioning accuracy and inexpensive lateral feed of printers. This has the effect of realizing a mechanism.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a schematic mechanism showing one embodiment of the present invention, and FIGS. 2 and 3 are perspective views of a schematic mechanism showing two examples of a conventional printer lateral feed mechanism. DESCRIPTION OF SYMBOLS 1... Movable member, 2... Rotating motor, 3... Motor shaft, 4... Gear, 5... Guide shaft, 6... Vortex, 7... Support shaft, 8... ...Slide sleeve, 9...Motor winding terminal, 10...Frame, 11.12...7-ri, 13...Reduction gear,
14... Belt (wire lobe), 15... Linear pulse motor slider section, 1b... Linear pulse motor movable section. 7. Part 1 Σ Dream 3 Figure

Claims (1)

[Claims] In a transverse feed mechanism of a printer that prints on a recording medium while laterally moving a movable member to which a print head is fixed, the movable member has a rotating shaft in a direction perpendicular to the moving direction of the movable member. a fixed rotary motor; a gear provided on the rotating shaft of the rotary motor; and a grooved guide shaft having a groove meshed with the gear and fixed on the printer frame in the moving direction. Equipped with
A transverse feed mechanism for a printer, characterized in that the movable member is moved on the guide shaft by rotationally driving the rotary motor.