JPH0141582B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a form holding device for a decorator.

In this type of product, multiple forms are stacked and folded in a zigzag pattern with carbon paper sandwiched between them, and each sheet is separated using a roller and a presser roller. It is necessary to connect elastically. Conventionally, many structures have been adopted in which shafts are arranged along the roller around which the foam is wound, a plurality of levers are rotatably connected to the shaft, and a presser roller is rotatably supported by these levers. However, the structure is complicated because a plurality of levers are required to join and separate the presser roller from the roller. In addition, the lever is biased by a spring in order to press the presser roller against the roller, but when inserting the form between the presser roller and the roller, the lever must be held down against the force of the spring. Setting the form is troublesome. Furthermore, a device that includes a mechanism for locking the lever has the disadvantage that the structure becomes even more complicated.

The present invention has been made in view of these points, and an object thereof is to provide a printing head for a dot printer that simplifies the support structure of the presser roller that is joined to the roller and also allows the operation of joining and separating the presser roller from the roller to be easily performed. This is the purpose.

In this invention, a support hole having a vertical hole and a horizontal hole bent from the upper part of the vertical hole is formed in the support member that holds the roller, and both ends of the shaft of the presser roller are inserted into the vertical hole of the support hole. The presser roller is joined to the roller by its own weight to press the form, and when setting the form between the roller and the presser roller, the shaft of the presser roller is inserted into the horizontal hole and the presser roller is retracted from the roller. This simplifies the support structure of the presser roller and the operation of joining and separating the presser roller from the roller, and also makes it possible to maintain an angle of around 45° from the center of the roller in the direction of rotation based on the vertical plane passing through the center of the roller. By arranging the support hole in the inclined plane, the presser roller is positioned on the foam discharge side from the vertical plane passing through the center of the roller, and the weight of the presser roller acts as a pressing force on the foam. At the same time, the contact area between the foam and the roller is expanded and the foam is pulled toward the discharge side, thereby ensuring that the foam is fed out without loosening.Furthermore, when the presser roller is separated from the roll, the distance between the two is reduced to the width of the foam. It is arranged perpendicularly to the ejection direction, thereby making it easier to insert the foam.

An embodiment of the present invention will be described based on the drawings.
Side plates 2 and 3, which are supporting members whose outer surfaces are covered with a cover 1, are provided facing each other.
Stand supports 4 are attached to both ends of these side plates 2, 3 with screws 5, as shown in FIGS. 3, 5, and 6. These stand supports 4 form bent pieces 7 vertically facing the mounting surface 6 to the side plate 2,
Notches 8 are formed in these bent pieces 7. The legs 10 formed on both sides of the stand 9 are inserted into the notches 8 of these stand supports 4 from below, and the upper ends of the legs 10 abut against stoppers 11 formed by cutting and raising the side plates 2 and 3. , the leg 10 is attached to the edge 13 of the notch 8 by a screw 12 screwed into the side plates 2, 3 and the mounting surface 6.
It is pressed and fixed.

Next, the two shafts 1 are attached to the side plates 2 and 3.
4 are installed in parallel, and these shafts 14 hold the guide plate 15 extending to the front lower part and the upper part of the guide plate 15 extending to the rear lower part. Form holders 16 are provided below these guide plates 15.

Further, two rollers 18 having shaft holders 17 fitted at both ends are rotatably supported in parallel on the side plates 2 and 3. That is, to explain in detail with reference to FIGS. 9 to 13, the roller 18
is made by stacking long paper materials in multiple layers and winding them in a spiral shape, which is then cut to a predetermined length. The outer periphery and both end faces of the roller 18 are covered with a tube 19 made of a moisture-proof material that shrinks when heated, and a moisture-proof layer 20 made of a film laminate material is formed on the inner surface. The shaft holder 17 has a tapered fitting surface 21 that is fixedly fitted to the inner surface of the roller 18 and a flange 22 that covers the end surface of the roller 18, and a shaft 23 is fixedly fitted in the center by a knurl 24. A shaft holding hole 25 for holding the shaft together is formed. As shown in FIG. 13, an annular groove 26 for holding the end of the roller 18 may be formed on the inner surface of the shaft holder 17. Moreover, by coloring the tube 19 in which the spiral seam 27 is formed on the outer periphery of the roller 18, this seam 27 is hidden. Further, a short shaft may be formed integrally with the shaft holder 17. Such a shaft 23 is connected to the side plate 2,
3, and one end of the shaft 23 has a third
As shown in the figure, gears 27 and 28 that mesh with each other are fixed, and pulleys 29 and 30 are fixed to the other end of the shaft 23. One pulley 29 is connected by a belt 32 to a drive pulley 31 supported on the side plate 2, and a crank 33 is connected to the axis of this pulley 31 by a screw 34.

Next, the presser roller 35 is joined to the roller 18.
is provided. These pressing rollers 35 are supported by a shaft 36 and are connected to the roller 1 from the axis of the roller 18 with reference to a vertical plane passing through the axis of the roller 18.
It is located in a plane that is inclined at approximately 45 degrees in the direction of rotation of No. 8. Both ends of the two shafts 36 are held in support holes 37 formed in the side plates 2 and 3, as shown in FIGS. 7 and 8. These support holes 37
A vertical hole 38 and a horizontal hole 39 extending horizontally in opposite directions are continuously formed.

Next, a carbon paper roll 40 is provided with its axis parallel to the roller 18. This carbon paper winding body 40 is made by bending a wire into a shape close to a U-shape.
A pair of rotating bodies 41 and 42 that hold both ends of 0 are provided. That is, as shown in FIGS. 14 and 15, one rotating body 41 is fixedly fitted to a shaft 43 supported on the side plate 2, and the other rotating body 42 is supported on the side plate 3. It is slidably held on a shaft 44 while being biased toward the side plate 3 by a spring 45. One end of the spring 45 is supported by a washer 46 to reduce frictional resistance. An engaging protrusion 47 utilizing the shape of the end of a wire is formed at one end of the carbon paper roll 40, and a connecting rod 48 is formed at the other end. Engagement recesses 49 that engage with the engagement protrusions 47 are formed on one surface of one rotating body 41 and are arranged at equal pitches at an angle of 90 degrees.
The other rotating body 42 is formed with four L-shaped ribs 50 that detachably hold the connecting rod 48 of the carbon paper roll 40. These ribs 50 are adjacent to each other and face each other at a predetermined interval so as to form a groove into which the connecting rod 48 is inserted. A pulley 51 is connected to the shaft 43 that holds the rotating body 41, and this pulley 51 is connected to the third
The pulley 30 is connected to the belt 52 as shown in the figure.
is connected to.

As shown in FIGS. 16 and 17, a pair of rotating bodies 53 each having four engaging recesses 49 and four ribs 50 are provided, and these rotating bodies 5
3 is slidably fitted to a shaft 43 supported on the side plate 2, and a spring 45
The other rotating body 53 may be slidably fitted onto a shaft 44 supported by the side plate 3 and biased toward the side plate 2 by a spring 45.

In such a configuration, the state shown in FIG. 2 is a state in which the stand 9 and the guide plate 15 are separated from the side plates 2 and 3 and stacked. In this state, it can be stored in a small amount of space in its packed state. After unpacking, insert the legs 10 of the stand 9 into the notches 8 of the stand supporter 4 from the underside of the cover 1, abut them against the stoppers 11 as shown in FIG. 13 to fix it. The fixing means for the stand 9 has a simple structure and is easy to assemble and disassemble.

In use, two sheets of foam 55, which are laminated with carbon paper 54 in between and folded in a zigzag pattern, are placed under the roller 18, and one of the foams 55 is pulled out as shown in FIG. The other foam 55 and the carbon paper 54 are sandwiched between the other roller 18 and the presser roller 35, and one end of the carbon paper 54 is inserted into the carbon paper winding body. Wrap it around 40. If you turn the crank 33 in this state, the fourth
In the figure, the roller 18 on the right side rotates clockwise together with the shaft 23 and the shaft holder 17, the roller 18 on the left side rotates counterclockwise together with the shaft 23 and the shaft holder 17, and the carbon paper winding body 40 is a rotating body. 4
1, 42 or the rotating body 53 in the counterclockwise direction. Therefore, the foam 55 is separated one by one and folded onto the foam holder 16 while being guided by the guide plate 15, and the carbon paper 54 is wound around the carbon paper roll 40. Of course, instead of the crank 33, a motor is connected to the pulley 31, and the motor drives the roller body 18 and the carbon paper winding body 4.
0 may also be driven.

In this way, since the roller 18 for separating the foam 55 uses a paper pipe, it is extremely light and can reduce costs. Also,
It is covered with a moisture-proof tube 19 from the outer periphery to both end faces, and furthermore, shaft holders 17 are fitted to both ends, so that moisture is not absorbed.
Furthermore, since the moisture-proof layer 20 is formed on the inner surface of the roller 18, it does not absorb moisture even before the shaft holder 17 is assembled. Furthermore, since the shaft holder 17 reinforces the end portion of the roller 18, durability can be increased. Also, the roller 18
By covering a long pipe made of paper material with a tube 19 before cutting it and then cutting the pipe to form the roller 18, it is possible to carry out the work continuously and reduce the number of manufacturing steps.
In this case, as shown in FIG. 13, it is not possible to cover the tube 19 up to the end surface of the roller 18, but by fitting the end surface of the roller 18 into the annular groove 26 formed in the shaft holder 17, moisture can be removed from the end surface. It is possible to prevent such things from being absorbed. Of course, the annular groove 26 of the shaft holder 17 may be fitted into the roller 18, which is covered with the tube 19 including the end surface, to double-proof the end surface.

When passing the form 55 between the roller 18 and the presser roller 35, as shown in FIG. Push it into.
In this state, even if you release your hand, the presser roller 35 remains retracted at a distance from the roller 18, and the distance is perpendicular to the direction in which the form 55 is pulled out, so the entire dimension of the space is the same as the form 5.
This provides an effective interval for passing the foam 55 and the carbon paper 54 through it with great ease. Then, by moving the shaft 36 to the vertical hole 38, the shaft 36 and the presser roller 35 are lowered by their own weight. Although the presser roller 35 is located on the discharge side away from the vertical plane passing through the axis of the roller 18, the presser roller 35 is located between the vertical plane passing through the axis of the roller 18 and the horizontal plane. The weight of the presser roller 35 is such that the pressure roller 35 is positioned so that the pressing force does not push the foam 55 back toward the entry side of the roller 18, but rather on the discharge side. In addition, the area where the foam 55 is wound around the roller 18 becomes wider, so that the foam 55 can be pulled out without slipping. Further, the presser roller 35 is moved by its own weight to the roller 18 without using a spring.
Since it is elastically joined to the roller 18, the structure is simple, and the operation of approaching and separating from the roller 18 can be easily performed.

When winding up the carbon paper 54, the carbon paper 5
4, and this tension is applied to the carbon paper roll 4.
As shown in FIGS. 15 and 17, the engaging protrusion 47 and the engaging recess 49 engage in a direction that coincides with the longitudinal direction of the carbon paper roll 40. Therefore, the carbon paper roll 4
0 will not curve and come off the rotating body 41 or 53. Furthermore, since the rotary body 42 or the rotary body 53 is held slidably in the axial direction while being biased by the force of the spring 45, the work of attaching and detaching the carbon paper winding body 40 can be easily performed on the rotary body 45.
1, 42 or rotating body 53 and carbon paper winding body 40
This can be easily accomplished by relatively deviating the rotation bodies 41, 42, and 53 along their axes. Furthermore, four engaging recesses 49 are formed at 90° intervals, and the ribs 50 are arranged so as to cross grooves with a space between adjacent ribs 50. By slightly rotating the paper roll 40 about its longitudinal centerline, the engagement protrusion 47 can be engaged with the engagement recess 49 and the connecting rod 48 can be pushed between the ribs 50. Positioning is also easy. Also, Fig. 16 and 1
Since the pair of rotating bodies 53 shown in FIG. 7 have the same structure and shape, they can be used in common to reduce the number of types of parts, which is advantageous in terms of production management.

As described above, this invention supports both ends of the shaft of the presser roller facing the roller by a support hole having a vertical hole and a horizontal hole bent from the upper part of the vertical hole, and also supports the presser roller with the center of the roller. By positioning the roller in a plane that is inclined at an angle of approximately 45° from the center of the roller in the direction of rotation with reference to the vertical plane that it passes through, when inserting the form between the roller and the presser roller, the axis of the presser roller is raised and engaged with the horizontal hole, thus keeping the presser roller in a retracted state from the roller and allowing the foam to pass through the gap perpendicularly to the direction of discharge of the foam with great ease. By moving the shaft to the vertical hole, the presser roller can be pressed against the roller by its own weight, and since the pressing position is closer to the foam discharge side from the vertical plane passing through the center of the roller, the foam can be pressed against the roller over a wide area. can be pulled toward the discharge side while being joined to the
The foam can be reliably discharged without loosening, and the structure and the operation of joining and separating the presser roller from the roller can be extremely simplified.

[Brief explanation of drawings]

The drawings show one embodiment of the invention.
The figure is a perspective view, Figure 2 is a perspective view showing the state when packed, Figure 3 is an exploded perspective view, Figure 4 is a longitudinal side view,
Fig. 5 is an enlarged perspective view of a part of the support structure of the stand, Fig. 6 is an enlarged longitudinal sectional front view of the part, and Fig. 7 is an enlarged view of the support structure of the presser roller along with its movement towards and away from the roller. FIG. 8 is a partially enlarged perspective view showing the support structure of the presser roller, and FIG. 9 is a perspective view showing a state in which the shaft holder is fitted to the roller. , FIG. 10 is an exploded perspective view showing the relationship between the roller and shaft holder with a part of the tube covering the roller cut away, and FIG. 11 is a partially enlarged longitudinal section showing the roller and shaft holder. 12 is an enlarged longitudinal sectional side view showing a state in which the roller and the shaft holder are fitted; FIG. 13 is an enlarged longitudinal sectional side view showing the roller and the shaft holder with an annular groove formed on the inner surface; FIG. 14 is an exploded perspective view showing a support structure for a carbon paper roll, FIG. 15 is a horizontal sectional view thereof, FIG. 16 is an exploded perspective view showing another example of a support structure for a carbon paper roll, and FIG. 17 is a horizontal sectional view thereof. 2-3...Side plate (supporting member), 18
...roller, 35...presser roller, 36...shaft,
37...Support hole, 38...Vertical hole, 39...Horizontal hole,
54... Carbon paper, 55... Foam.

Claims (1)

[Claims] 1 A pair of rollers are connected to a drive unit on top of a plurality of forms stacked with carbon paper sandwiched in between and folded in a zigzag pattern to pull each of these forms upward from between each other and discharge them downward. The rollers are attached to support members provided opposite each other, and are attached to each of these support members at an angle of about 45° from the center of these rollers in the direction of rotation with reference to a vertical plane passing through the center of the rollers. A support hole is formed in the inclined surface and has a vertically long vertical hole and a horizontal hole bent from the upper part of the vertical hole toward the foam discharge side of the roller, and the roller is inserted into these support holes. Both ends of the shaft of a pressing roller facing the upper part of the roller are slidably attached, a carbon paper winding body connected to a drive section is attached to the supporting member located on the side of one of the rollers, and A form holding device for a decorator, characterized in that a form holder is provided to receive the separated form.