JPH0129651Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a character wheel positioning mechanism for manufacturing a register so that all character wheels represent predetermined positions.

Because the character wheel functions as a register, it is necessary to match the characters printed on its display surface, and when assembling it, the character wheel must be positioned in the rotational direction and inserted into the assembly jig. Traditionally, assembly was done by hand. The process involves manually taking out the letter wheels 3 from a box 2 in which letter wheels are randomly stored in an assembly jig 1 as shown in Fig. 1, visually positioning them in the rotational direction, and placing them on the assembly jig 1. It was inserted into. For this reason, work efficiency is low and this assembly work requires a lot of manpower, and the assembly jig 1 cannot be transported because it is difficult to hold the character wheel 3 in a stable set due to its function.
These drawbacks hindered the mechanization of register assembly.

The purpose of the present invention is to provide a positioning mechanism that allows easy and reliable positioning of the character wheel in the rotational direction and that can be assembled mechanically, thereby improving the efficiency of register manufacturing.

In the present invention, in order to achieve this purpose, shaft holes are formed at the bottoms of the bottomed cylindrical shapes of the plurality of character wheels, and perforations are formed in the same parts of the shafts, and center pins and location pins are inserted into these holes. The position of the character wheel is determined by engaging the character wheel and rotating the character wheel with a rotary contact.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a sectional view of a positioning jig according to an embodiment, and FIGS. 3a and 3b are a plan view and a sectional view of a character wheel according to an embodiment.

The positioning jig shown in Fig. 2 includes a jig body 4, a center pin 5, a location pin 6, a spring 7,
It is composed of a spring stopper 8.

As shown in FIGS. 3a and 3b, the character wheel 10 has a cylindrical shape with a bottom, and a character surface 14 is formed on the outer peripheral surface of the cylindrical portion. 15 is a gear that meshes with a carry feed wheel and the like. Reference numeral 11 denotes a perforation formed in the bottom at a common position for each character wheel. Further, a rotating contactor 12 is arranged as shown in FIG. 4b.

During positioning, first, the center hole 9 for the shaft of the character wheel 10 engages with the center pin 5 of the jig main body 4, and the character wheel 10 is set on the jig main body 4 (see Fig. 4a). (Fig. 3 is an explanatory diagram illustrating the set state.) From above the inserted character wheel 10, the rotary contact 12 is inserted into the inside of the character wheel as shown in FIG. 4b, and the contact 12 is lowered until the character wheel sinks into the location pin 6. When the rotary contact 12 is rotated, the character wheel 10 rotates together with the rotary contact 12 due to the pressure between the character wheel and the contact 12.

If the location pin 6 and the perforation 11 do not match, the bottom of the character wheel presses the pin 6 downward as shown in FIG. 4a.

When the perforation 11 of the character wheel 10 rides on the location pin 6 of the jig main body 4 due to the rotation, the location pin 6 pops out due to the spring 7.
The perforation 11 and the pin 6 engage with each other, stopping the rotation of the character wheel 10 and positioning it in the rotational direction (FIG. 4c is an explanatory diagram illustrating the state after positioning the character wheel 10). After positioning, the rotary contact 12 retreats upward.

By implementing the mechanism of the present invention as described above, there are the following advantages.

1. Since the location pin reliably engages with the perforation of the character wheel, misalignment in the rotational direction of the character wheel is less likely to occur. Therefore, it can be easily transported and the register can be easily assembled mechanically.

2. Since the positioning of the character wheel in the rotational direction is performed only by a combination of a hole and a location pin, the positioning can be performed using a simpler and cheaper device than an optical reading method.

3. When the positioning is poor, the character wheel does not descend, so it is easy to determine whether the positioning is good or bad by height detection or gap detection, and can be done with a simple device.

4. When performing positioning, the contact point between the character wheel and the contact element is a part of the interior of the rotating contact character wheel, so there is less damage to the character surface of the character wheel and the feed gear, and the character wheel can be rotated easily. Since the moving power is only a weak sliding friction force with the rotary contact 12, damage to the character wheel is small.

Furthermore, in the embodiments shown in FIGS. 2 and 4, the jig main body having the center pin and location pin is made using an independent jig, but this is done in the form of a continuous chain as shown in FIG. The jig main body may be directly attached to a flat conveying device as shown in Fig. 6.
In other words, any jig body that has a center pin and a location pin may be used. Also, in one embodiment, a circular character wheel was used, which is shown in Fig. 7a.
An elliptical shape such as ``B'' or a rectangular shape such as ``b'' may be used as long as it has a hole for a rotating shaft and a hole used for positioning.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram illustrating a conventional method for positioning a character wheel, FIG. 2 is a sectional side view of a jig main body according to an embodiment of the present invention, and FIGS. 3a and 3b show a character wheel; FIG. 3a is a plan view, and FIG. 3b is a side sectional view. FIGS. 4a, 4b, and 4c are explanatory diagrams for explaining the operation of an embodiment of the present invention, each of which is explained using side sectional views. FIGS. 5 and 6 are explanatory views of other embodiments of the present invention, and FIGS. 7a and 7b are respectively other embodiments of the character wheel. 4... Jig body, 5... Center pin, 6...
Location pin, 7... Spring, 10...
Letter wheel, 12...Rotating contact.

Claims (1)

[Scope of utility model registration request] A register having a gear that rotates in proportion to the size of the measured quantity, a plurality of character wheels connected to this gear to integrate the measured quantity, and a carry feed wheel that carries up these character wheels. In the manufacturing device, each character wheel is arranged so that a hole is formed in the same part of the bottom of the plurality of character wheels, a hole for the shaft is formed in the center, and a character surface is formed on the outer peripheral surface of the cylindrical part. has a cylindrical shape with a bottom, and has a location pin that engages with the hole and a center pin that engages with the hole for the shaft, and a center pin of the jig that has a location pin for the shaft of the character wheel. and a rotary contact that rotates the character wheel after engaging a hole in the character wheel.