JPS58163675A - Printing head - Google Patents

Abstract

PURPOSE:To enable the shortening of a time required for incorporating print wires, by providing a guide plate having a projecting part in an electromagnetically-driven wire dot printer head. CONSTITUTION:A plurality of armatures 2 retaining print wires 1 at the end are fixed to the end parts of the spring members 3a of a spring plate 3 which project in the direction of the inner circumference of the plate. A main guide 5 is a guide for lining up the ends of the print wires 1 at necessary positions, while a guide plate 6 prevents the lateral vibrations of the print wires 1 when they operate. In the guide plate 6, guide holes 6a through which the print wires 1 are passed are arranged elliptically. On a projecting part 6b, semi-circular guide grooves 6c are formed for guiding the print wires 1 so that they enter the prescribed guide holes 6a respectively when they are passed through them. The projecting part 6b has a form tapered relatively toward the end thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention performs printing by selectively impacting the recording me with a plurality of print wires! Regarding the print head for TRIX.

Recently, with the advent of office automation, the use of kanji characters has rapidly progressed, and in this type of print head type, the number of print wires has increased from the conventional 7 or 9 to 24. The number of dots per character stroke is large, and the response frequency of the wire must be fast in order to print light characters. Furthermore, there is a demand for small lids that are lightweight and low in price.

However, the required print head has the disadvantage that the print wire is fine and the work required to assemble the guide plate is very time consuming and difficult for children.

In particular, in order to reduce the weight of the trJl, multiple armchairs to which printed wires are fixed are held on one spring, and it is almost impossible to pass multiple wires through the guide plate at the same time in a nine-structure positioning head. The drawback was that it was not possible to create a low-cost print head with a quantity that was close to what was possible.

According to the present invention, by installing a protrusion on the guide plate, the time required for assembling the print wire can be shortened and the components can be simplified, thereby providing a low-cost print head with high productivity. can.

According to the present invention, it is possible to pass multiple print wires through guide holes at the same time, and multiple armchairs can be integrated into a single structure, thereby providing a print head that is small, lightweight, and capable of high-speed printing. can.

In the print head according to the present invention, semicircular grooves protrude continuously from the inside of the hole of the guide plate, which has the size of the hole arranged in an oval or circular shape. The protruding portions are formed so as to become smaller as they go toward the 7-gusset side.

According to the present invention, by installing a protrusion having a semicircular groove on the guide plate, when passing the printed wire through the upper guide, the tip of the printed wire can be easily placed in the semicircular groove in a short time. Moreover, a plurality of printed wires can be passed through a predetermined hole at the same time.

The present invention will now be described in detail with reference to the drawings showing embodiments of the invention.

FIG. 1 is a configuration diagram of the present invention, in which a plurality of armatures 1a 2 each having a printed wire 1 fixed to their tips are fixed to the tips of a spring portion 3m protruding toward the inner circumference of a spring plate 3. There is. A plurality of electromagnetic drive means 4m for driving the armchair 2 are arranged in the electromagnetic drive means assembly 4 at positions corresponding to the armchair 2, resulting in nine configurations. The main guide 5 is a ninth guide for aligning the tip of the printed wire 1 at a desired position, and the guide plate 6 is installed to prevent lateral vibration when the printed wire 1 moves. The main kite 5 and the guide plate 6t are arranged in predetermined positions, and are fixed to the electromagnetic drive means assembly 4 together with the spring plate 3 by plate screws 8. .

Figure i2 (2) is a detailed view of the guide plate 6,
Guide holes 6 through which the printed wire 1 is passed are arranged in the shape of the tank, and a protrusion 6b is provided to guide the printed wire 1 into a predetermined guide hole 6 when passing the printed wire 1 through the guide hole 6. A semicircular guide 116c is formed.

Further, the protruding portion 6b has a shape that becomes narrower toward the tip.

With the structure described above, when passing the printed wire 1 through the guide hole 6 of the guide plate 6, simply place the tip of the printed wire 1 on the guide groove 6bK and push it lightly, so that all the printed wires 1 can be passed through the guide hole 6 of the guide plate 6 at the same time. It can be easily passed through the guide hole 6.

Therefore, the time required to assemble the print wires is greatly shortened, and a low-cost print head with good productivity can be provided.

Another advantage of the present invention is that it is possible to pass a plurality of printed wires through the guide hole at the same time.
A plurality of 7-gussets can be made into an integral structure, and a print head that is lightweight and has a high printing speed can be provided.

[Brief explanation of the drawing]

FIG. 1 is an exploded view of a print head showing a first embodiment of the present invention. FIG. 2) is a detailed view of the guide plate of the present invention. Figure 2 is a side view of mine 2a.

Claims (1)

[Claims] In a print head that drives an armchair holding a print wire by an electromagnetic drive means, the print head holds the print wire at the tip and has a spring property near the base end.
! ! The 7-gusset roaring aperture has a monolithic structure, and the semicircular carved wI is on the inside of the hole in the guide plate, which has multiple values of kite size. A print head characterized by the number 9, which is formed on a machine that is smaller in size, and uses a guide plate because the protruding part is oriented toward the armature.