JPH0450122Y2 - - Google Patents

Description

[Detailed description of the invention] [Summary] The printer assembly jig of the present invention is composed of the print band itself, which is equipped with a clock mark for detecting the print position, so a position detection sensor that determines the print timing is used. Positioning and adjustment of the installation position can be handled only in the assembly process.

[Industrial application field]

The present invention relates to a positioning jig for a print timing detection sensor installed in a band printer device.

[Conventional technology]

FIG. 3 is a perspective view of a main part showing the configuration of a printing section of a conventional band printer device, and FIG. 4 is a plan view of a main part showing details of a sensor position adjustment structure.

As shown in FIG. 3, the conventional band printer device includes a loop-shaped print band 16 stretched between a pair of drive pulleys 14 mounted on a base unit 20, and a type forming surface 18 of the print band. paper (not shown) by striking the
The hammer unit 15 includes a plurality of hammers for printing, and a position detection sensor 10 for detecting the printing timing of the hammer unit.

Then, a position detection sensor 10 mounted on a sensor holder 13 reads a clock mark 17 formed on a print band 16 which is driven by a drive pulley 14 to detect the printing timing of the hammer unit 15.

Next, the position adjustment structure of the position detection sensor 10 will be explained with reference to FIG.

As shown in FIG. 4, the center O of the drive pulley 14
The position detection sensor 10 on the sensor holder 13, which is provided so as to be rotatable in the direction of the arrow A-A' with the center of rotation at
By moving in the direction of the arrow A-A', the angle θ formed between the reference center line Y and the own center U can be freely changed within the range of the adjustment hole 11. By changing this, the relative position between the hammer unit 15 and the position detection sensor 10 changes, and as a result, the printing timing changes).

Note that a reference center line Y passing through the rotation center O of the drive pulley 14 is a center line serving as a reference for determining the relative position between the hammer unit 15 and the print band 16.

[Problem that the invention attempts to solve]

However, the conventional sensor position adjustment described above is
Since the method is such that the operator visually confirms the position of the clock mark 17 for position detection and the position of the position detection sensor 10, the positioning accuracy is not reliable.
There was a problem in that it was necessary to re-fix it in the correct position during the test process in the post-process, and the assembling work of the position detection sensor was redundant, resulting in poor efficiency.

[Means for solving problems]

The band printer assembly jig of the present invention includes a loop jig having the form of a print band, and a loop jig disposed at a predetermined position on the outer peripheral surface of the loop jig, and disposed to detect the printing timing of type. It is equipped with a sensor positioning block having a shape that can accommodate the position detection sensor, and a positioning pin that is also arranged on the loop jig and that can be inserted into a positioning hole on a base unit that determines the relative position between the print band and the hammer unit. are doing.

[Effect]

According to the band printer assembly jig constructed in this way, the position detection sensor can be positioned by a simple operation of fitting the position detection sensor into the sensor positioning block.

〔Example〕

The present invention will be explained in detail below based on embodiment figures.

1A and 1B are a perspective view of the main part showing an embodiment of the present invention and a plan view showing the detailed structure of the constituent members, and FIG. 2 is a plan view of the main part showing the partial structure of the present invention.
The same parts as in FIGS. 3 and 4 are given the same reference numerals.

As shown in FIG. 1a, the band printer assembly jig of the present invention includes a loop jig 2 that utilizes the printed band 16 itself, and a sensor positioning device disposed at a predetermined position on the outer circumferential surface of the loop jig 2. A block 1, a first side plate 3 and a second side plate 6 disposed opposite to each other on both sides of the loop jig 2, and two pairs of support plates 8 attached to the first side plate 3 and second side plate 6. a handle 7 disposed through a coupling screw 9, a pin support plate 3a attached to the first side plate 3, and a positioning pin 4 supported slidably in the vertical direction on the pin support plate. It is structured accordingly.

The sensor positioning block 1 is formed of a thin plate such as a stainless steel plate and has a U-shaped cross section, and is fixed to the loop jig 2 by means such as welding.

Further, the first side plate 3, the second side plate 6, and the loop jig 2 are coupled by welding (spot welding).

FIG. 1b is an enlarged view of section A shown in FIG. 1a. As shown in the figure, the sensor positioning block 1 has a U-shaped cross section with an open side facing the position detection sensor 10, and the position detection sensor 10 is inserted into the open part in a fitted state. There is. Therefore, the width W of the open portion of the sensor positioning block 1 is slightly larger than the outer diameter D of the position detection sensor 10, and is formed so that W>D.

Next, the procedure for positioning the position detection sensor using the band printer assembly jig of the present invention will be explained with reference to FIGS. 1A and 1B and FIG. 2.

The loop jig 2 is placed along each outer peripheral surface of the pair of drive pulleys 14.

The handle 7 is operated to insert the positioning pin 4 into the positioning hole 5 provided on the base unit 20. This operation determines the relative position between the hammer unit 15 and the sensor positioning block 1.

In parallel with this, sensor positioning block 1
Insert the position detection sensor 10 into the open side (see Fig. 2). Before performing this operation, loosen the adjustment screw 12 and move the sensor holder 13 in the direction of arrow A.
It is necessary to be able to move it in the −A′ direction.

By the above operations, the angle θ between the center U of the sensor and the reference center line Y, that is, the position of the position detection sensor 10 with respect to the hammer unit 15 can be easily and accurately determined at the assembly stage.

[Effect of idea]

The band printer assembly jig of the present invention is configured to automatically ensure the positional relationship between the position detection sensor and the hammer unit. There is no need to perform full-scale positioning again in the test process, and the positioning process does not overlap, making the work significantly more efficient.

[Brief explanation of the drawing]

1A and 1B are a perspective view of the main parts showing an embodiment of the present invention and a plan view of the main parts showing the detailed structure of the constituent members; FIG. 2 is a plan view of the main parts showing partial details of the invention;
The figure is a perspective view of a main part showing a configuration example of a conventional band printer device, and FIG. 4 is a plan view of a main part showing a conventional sensor position adjustment structure. In the figure, 1 is the sensor positioning block, 2 is the loop jig, 3 is the first side plate, 4 is the positioning pin, 5 is the positioning hole, 6 is the second side plate, 7 is the handle, 8 is the support plate, and 9 is the coupling screw. , 10 is a position detection sensor, 11
is an adjustment hole, 12 is an adjustment screw, 13 is a sensor holder, 14 is a drive pulley, 15 is a hammer unit,
16 is a print band, 17 is a clock mark,
Reference numeral 20 indicates a base unit.

Claims (1)

[Claims for Utility Model Registration] A jig for positioning a hammer unit 15 and a position detection sensor 10 that detects the printing timing of printed characters formed on a print band 16, the loop having the form of a print band 16. A jig 2, a sensor positioning block 1 disposed at a predetermined position on the outer peripheral surface of the loop jig and having a shape that can accommodate the position detection sensor 10; print band 1
6 and a hammer unit 15. A band printer assembly jig comprising a positioning pin 4 that can be inserted into a positioning hole 5 on a base unit 20 for determining the relative position of the band printer 6 and the hammer unit 15.