JPS6219335B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an adjustable hopper gate in a single piece printing machine.

Single-piece printing machines are used to print list prices on price tags attached to items such as clothing.

Price tags and the like that are printed by this type of printing machine are small and relatively thick single pieces, so the single pieces may warp. In addition, a thin string for attaching to clothing is usually attached in advance before printing. Furthermore, since it is printing a list price, etc., it is often necessary to print on a relatively small amount of single pieces of various sizes. For this reason, special measures are required for the feeding mechanism and the like.

First, the basic configuration of a single-piece printing machine proposed by the inventor of the present invention will be explained with reference to FIG.

A plate holder 1 is provided with a hopper 2, and the hopper 2 accommodates a large number of single pieces 3 such as price tags. The hopper 2 consists of a positioning member 2a, a bottom plate 2b, and a rear presser plate 2c.The single piece 3 is pushed up from below by the bottom plate 2b, and the positioning member 2a
It is positioned by From the rear, the single piece 3 is held down by a rear holding plate 2c for regulating displacement. Among the single pieces housed in the hopper 2, the uppermost single piece 3a is sent to the plate holder 1 via the hopper gate 5 by the single piece feed claw 4. The hopper gate 5 prevents the feeding of two single pieces 3. Above the plate holder 1, there is provided a print head 6 that moves up and down with respect to the plate holder 1, and an ink tray 7 that moves forward and backward into the movement space of the print head 6 for each print. The print head 6 transmits the rotation of the motor to an output shaft via a gearbox, clutch, etc., and is moved up and down under the control of a disc-shaped control cam provided on the output shaft.
The printing head 6 is loaded with a cheese box for holding rubber type and the like. Similarly, the ink tray 7 is moved left and right by controlling the output of the motor with a control cam and via a link mechanism. The printed single piece is received in the single piece receiving device 8.

Next, the operation of the single-piece printing machine described above will be explained. The single piece 3a in the uppermost position is conveyed to the plate holder 1 by the feed claw 4, and is ready for printing (FIG. 1a).

The ink tray 7 advances into the moving area of the print head 6,
The characters in the check box of the printing head 6 are brought into contact with the ink tray 7, and so-called inking is performed (FIG. 1b).

When the ink tray 7 is retracted, the print head 6
is lowered and the single piece 3 placed on the plate holder 1
Printing is performed on the image (FIG. 1c).

When printing is completed, the printing head 6 is raised, and the single piece 3b to be printed next is sent by the feeding claw 4, and the printed single piece 3a is pushed by the single piece 3b and stored in the single piece receiving device 8. (Figure 1d).

In such a single-piece printing machine, since the printing target is not a continuous sheet of paper but a relatively thick single piece of paper, a method is adopted in which the side surface of the trailing edge of the single piece is fed one sheet at a time using the feed pawl 4. .

In this method, since the hanging portion of the feed claw 4 engages with the side surface of the single piece 3 in the thickness direction and feeds the single piece 3, if the single piece 3 is warped, there is a possibility that two pieces will be fed. In order to prevent such two-sheet feeding, a hopper gate 5 is provided at the single-piece delivery port of the hopper 2.

If the opening degree of the hopper gate 5 is adjusted to the extent that there is a gap between the top and bottom of the thickness of the single piece 3, the feed claw 4
Even if two sheets are sent by the hanging section, only one sheet is sent to the printing position on the plate holder 1.

However, since the thickness of the single piece is around 0.5 mm and various thicknesses are used, a mechanism that can adjust the minute opening degree is required, and in order to set the opening degree, the thickness of each single piece must be adjusted. Must be measured. This makes the device expensive and the operation complicated.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a hopper gate in a single-piece printing machine that can adjust the opening degree of the gate with a simple configuration and prevent double sheet feeding.

In order to achieve the above object, the hopper gate with adjustable opening in a single-piece printing machine according to the present invention has the following features:
The position of the uppermost single piece is regulated, and the gate 5 of the single piece hopper 2, which pushes up a large number of single pieces from the bottom, engages the side surface in the thickness direction of the uppermost single piece. In the hopper gate of a single-piece printing machine, the single-piece printing machine prints by sending the single pieces one by one to the printing position.
A first gate member 2a provided in the single piece hopper 2 for regulating the upper position of the single piece, and a second gate member 2a provided opposite to the first gate member for regulating the lower position of the single piece. The gate member 9 and the first or second gate member having an opening degree setting section are moved in the thickness direction of the single piece, and the used single piece is inserted into the opening degree setting part. an opening adjustment mechanism 9b, 13, 14, 15, 16 or 20, 2 that moves the first or second gate member by a thickness of
1, 22, and 2e.

The first gate member 2a is a member provided in the single piece hopper opening to restrict the upper thickness direction of the single piece in order to prevent the feeding of two single pieces.

The second gate member 9 is a member that regulates the lower thickness direction of a single piece provided opposite to the first gate member.

The opening adjustment mechanism 9b, 13, 14, 15, 16 or 20, 21, 22, 2e has an opening setting part and is capable of moving the first or second gate member in the thickness direction of the single piece. The mechanism is such that the first or second gate member is moved by the thickness of the single piece being used by inserting the single piece into the opening degree setting section.

According to the above structure, the object of the present invention can be completely achieved.

Hereinafter, the present invention will be explained in more detail with reference to the drawings and the like.

FIGS. 2 and 3 are a front view and an exploded perspective view showing a first embodiment of a hopper gate opening adjustment mechanism in a single-piece printing machine according to the present invention.

The hopper 2 includes a first gate member 2a that regulates the uppermost position of the single piece 3, a bottom plate 2b that pushes up the single piece 3 from below, and a rear presser plate 2c that regulates the single piece 3 from the rear in the single piece delivery direction. It is made up of Bottom plate 2b
are connected by a Conston spring 10 that can always be biased upward with a constant force even when the number of single pieces 3 is reduced. Even if this spring 2d is replaced with a normal coil spring, the essence of the invention will not be affected.

The first gate member 2a has a thicker thickness at the outlet, and the stepped portions are smoothly connected. Therefore, since the single piece 3 pushed up from below is pushed from behind by the feed pawl 4, the single piece 3 is sent to the printing position along the lower surface of the first gate member 2a.

A second gate member 9 is provided on the side surface of the plate holder 1, and the second gate member 9 has openings 9a,
9b and 9c are provided. In the opening 9a, a push plate 11 is connected to the Conston spring 2d and the bottom plate 2b.
is provided. As the single pieces 3 are fed one by one to the printing position on the plate holder 1, the push plate 11 is guided to the opening 9a and is biased by the Conston spring 2d to push up the bottom plate 2b, thereby constantly moving the single piece 3 to the printing position on the plate holder 1. It is pressed against the first gate member 2a.

The second gate member 9 is an opening 12a of the frame plate 12.
is inserted into. A block 13 and a base 14 are provided on both sides of the opening 12a. A stopper 15 is screwed to the base side 14. The stopper 15 has a key part 15a, and the key part 15a is inserted into the second gate member 9 through the opening 9b.
is in contact with the opposite side. The lower end of the second gate member 9 is urged upward by a leaf spring 16 whose base is fixed to the frame plate 12 with screws.

Normally, the second gate member 9 is urged upward by a leaf spring 16, and the lower side of the opening 9b is located at the stopper 1.
It is in contact with the lower surface of 5. In this state, the gap between the upper end surface 9d of the second gate member 9 and the hopper gate 5 formed by the first gate member 2a is t _c =0.1.
It is set to ~0.2mm.

If you want to print single piece 3 with thickness t, stopper 1
If the single piece 3 is inserted between the lower surface of the hopper gate 5 and the lower side of the opening 9b, the second gate member 9 will be lowered by t, and the opening degree of the hopper gate 5 will be equal to the sum of the thickness t of the single piece 3 and the gap t _c . It will open by the width. Since the thickness of the single piece normally used is about 0.5 mm, feeding of two single pieces 3 can be prevented.

Next, a second embodiment of the opening adjustment mechanism according to the present invention will be described with reference to FIGS. 4 and 5.
FIGS. 4 and 5 are a front view and a side view showing a second embodiment of the opening adjustment mechanism according to the present invention.

Whereas in the first embodiment, the first gate member 2a is fixed and the second gate member 9 is moved up and down,
In the second embodiment, the first gate member 2a is configured to be moved.

The first gate member 2a is placed on a base 20 provided at the fixed part. First gate member 2a
Through-holes are provided at two locations, and screws 21 are screwed into the base 20 through these through-holes.

A spring 22 is inserted between the screws 21, 21 and the first gate member 2a. Therefore, the first gate member 2a can be moved up and down guided by the screws 21, 21, and there is normally a gap of t _c between the second gate member 9 and the upper end surface 9d. is set to . In the second embodiment, the second gate member 9 is fixed. The first gate member 2a is provided with a height adjustment screw 23, and the tip of the screw 23 is in contact with the upper surface of the base 20 at a height position where the hopper gate 5 has a gap _tc . A gate member 2e that regulates the upper thickness direction of the single piece at the position of the first gate member 2a and the hopper gate 5 is fixed with a screw 23.

If you want to print a single piece 3 with a thickness of t, use the gate member 2.
Lift up the first gate member 2a and the base 2.
0, the height of the first gate member 2a will be raised by t, and the hopper gate 5 will have a width of t+ _tc .

As explained in detail above, according to the present invention, the opening degree of the hopper gate can be adjusted by simply inserting the single piece to be used into the opening degree setting section, so the opening degree can be adjusted accurately with a simple operation. Ta.

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining the basic configuration of a single-piece printing machine, and FIGS. 2 and 3 are front views showing a first embodiment of a hopper gate whose opening degree can be adjusted in a single-piece printing machine according to the present invention. Figures and exploded perspective views, No. 4
FIG. 5 is a front view and a side view showing a second embodiment of a hopper gate whose opening degree can be adjusted in a single-piece printing machine according to the present invention. 1... Plate holder, 2... Hopper, 2a... Positioning member, 2b... Bottom plate, 2c... Side plate, 2d...
Spring, 3... Single piece, 4... Feed claw, 5... Hopper gate, 6... Print head, 7... Ink plate, 8
...Single piece receiving device, 9...Gate member, 10...
Conston spring, 11... Push plate, 12... Frame plate, 13... Block, 14... Base, 15...
...stopper, 16...leaf spring.

Claims (1)

[Claims] 1. The thickness of the uppermost single piece is adjusted from the gate 5 of the single piece hopper 2, which is of the type that regulates the position of the uppermost single piece and pushes up a large number of single pieces from the bottom. In a hopper gate of a single-piece printing machine that engages with a side surface in the horizontal direction and sends out single pieces one by one to a printing position for printing, a gate provided in the single-piece hopper 2 regulates the upper position of the single piece. one gate member 2a; a second gate member 9 that regulates the lower position of a single piece provided opposite to the first gate member;
By moving the first or second gate member having an opening setting part in the thickness direction of the single piece and inserting the used single piece into the opening setting part, Opening adjustment mechanism 9b, 13, 14, 15, 16 for moving the first or second gate member
or 20, 21, 22, and 2e.