JPH02529A - Wire guide member for wire type dot printer - Google Patents

Abstract

PURPOSE:To smoothly guide a printing wire and to improve durability by composing a 3-layer structure having high wear resistance between two synthetic resin plates. CONSTITUTION:A wire guide member 4 in which printing wires are aligned in guide holes formed on the faces of wire noses 1 by attaching them to the ends of the noses 1 is composed by laminating a sole plate 5 made or polyacetal resin or the like, a thin plate 6 made of ceramics, ruby, glass, etc. having insufficient toughness and high wear resistance to be placed on the plate 5, and a retaining plate 7 made of polyacetal resin or the like to be retained on the plate 5. Since it is constructed in this manner, the plats 5, 7 so provided on the beneath the plate 6 as to hold the plate 6 absorb the chatter of the wire generated at the time of polishing the end of the wire due to the viscoelasticity of the resin material to prevent the plate 6 from cracking and absorb the vibration of the plate 6 generated at the time of printing to slidably contact the wire smoothly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a print wire guide member in a wire dot printer.

[Prior art]

The wire guide member attached to the tip of the wire nose is
A large number of print wires are guided by guide holes provided on the surface and aligned according to the size of the font to be printed, and the print wires slide within the guide holes by an electromagnetic drive mechanism. Therefore, there is a problem that wear is significant, and printing quality may deteriorate depending on how well the print wire and the guide hole fit together.

〔the purpose〕

The present invention has been made in view of these problems, and its object is to provide a highly durable wire-type dot printer that can smoothly guide a print wire.

〔composition〕

In other words, the present invention is characterized in that the wire guide member is made of a plate-like member made of a highly wear-resistant material such as ceramic, and a plate-like member made of two synthetic resin materials that sandwich the plate-like member from above and below. The point is that it is constructed as a laminate with.

Therefore, details of the present invention will be explained below based on illustrated embodiments.

FIG. 1 shows an example of a wire guide mechanism of a wire-type dot printer according to the present invention, and the reference numeral 1 in the figure is the nose of a wire-type dot printer such as that shown in Japanese Patent Publication No. 58-35475. Here, several stages of guide temporary 2.2 are provided to sequentially align a large number of printed wires driven by an electromagnetic drive mechanism, and a wire guide member 4, which will be described later, is attached from one side to the inner surface of the tip. A groove 3.3 for this purpose is recessed.

Reference numeral 4 denotes the above-mentioned wire guide member which is a characteristic part of the present invention. It is constructed in a laminated manner by a thin plate 6 made of ceramic, ruby, glass, etc., and a holding plate 7 made of polyacecool resin or the like that holds the thin plate 6 on the sole plate 5, and dowels 5a protruding from the upper surface of the sole plate 5. The positioning holes 6a and 7a of the thin plate 6 and the presser foot 7 are fitted into each other, and then these are fitted into the recess 5b formed on the upper surface of the sole plate 5, so that the whole can be installed in the groove 3 described above. It is assembled in one piece so that it has the same length, width, and height.

In addition, in the figure, symbols 5c, 6c, and 7c are wire guide holes drilled on the 5, 6, and 7 surfaces of each plate, and 5d is a protrusion provided on both sides of the temporary sole 50 to prevent the wire guide 4 from falling off. are shown respectively.

Therefore, the sole plate 5 and the thin plate 6 configured in this way
When the presser plates 7 are stacked one after another to form a single wire guide member 4, the sole plate 5 and presser plate 7 provided above and below the thin plate 6 sandwich the thin plate 6, and the viscoelasticity of the resin material allows the wire tip to The chatter of the print wire generated during polishing is absorbed to prevent cracking of the 3 temporary 6, and the vibration of the thin plate 6 generated during printing is absorbed to enable smooth sliding contact of the print wire.

〔effect〕

As explained above, according to the present invention, the wire guide member is formed into a three-layer structure by sandwiching a thin plate such as ceramic between two synthetic resin plates. At the same time, the viscoelasticity of the synthetic resin plate prevents this kind of thin plate with poor toughness from cracking, and ensures smooth contact with the print wire to ensure good printing quality at all times.

Figure 1

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a wire guide member according to an embodiment of the present invention shown together with a wire nose, and FIG. 2 is a bottom view showing a state in which the wire guide member is attached. Wire nose wire guide member sole plate thin (anti-pressure foot) Representative lead powder Kijibe (and one other person)

Claims (1)

[Claims] The wire guide member, which is attached to the tip of the wire nose part and which aligns the reprint wires through guide holes provided on the surface, is made of a highly wear-resistant plate-like member and two pieces that sandwich the plate-like member from above and below. A wire guide member for a wire dot printer, characterized in that it is constructed as a laminate with a plate-like member made of a synthetic resin material.