JPS5831304B2 - A small printing machine that prints three-dimensional objects - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a small printing net machine that prints on various containers, various electrical parts, various mechanical parts, and various other small articles.

Conventional printing machines of this type were manufactured so that they could be installed on the floor, and the printing position was usually designed at the worker's waist or chest level, making the entire machine large and heavy, and expensive. There was a drawback.

In addition, this type of printing machine was manufactured on the premise of intensive and large-volume printing in a specialized printing factory.
For example, it is not suitable for use as a side job in an electrical parts manufacturing factory, and even if the shape and dimensions of the printed product change, the replacement and adjustment of auxiliary tools are complicated, and it is difficult to perform high-mix, low-volume printing. It was not suitable for use by anyone other than printers.

An object of the present invention is to provide a small and lightweight printing press that is easy to carry and suitable for use on a tabletop.

The present invention is characterized in that a group of printing rolls is provided in front of the flock substrate, a group of gears fitted to the rotating shaft of each roll of the group of printing rolls, a center gear that engages with the group of gears, and a block substrate. A drive device consisting of an intermediate pulley that is pivotally supported at one end and transmits the rotation of the motor to rotationally drive the center gear is provided behind the block substrate to constitute the first block, and the drive device is configured to move the printed item on a predetermined trajectory. A second block is constituted by a guide rail that slides along the guide rail and a transfer device that transfers the printed material to a predetermined printing position in synchronization with the rotation angle of the printing roll, and the printing machine is mounted on a tabletop tube. A main frame having a substantially vertical surface when installed is provided, and the first block described above is mounted on the upper part of the main frame so as to be rotatable about the axis of the intermediate pulley, and the first block The other end of the block board is engaged with an adjustment member that is vertically displaceable with respect to the main frame, the above-mentioned second block is attached to the lower part of the main frame, and the above-mentioned first block is connected to the second block. The structure is such that the position of the second block can be freely adjusted in the vertical direction.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a front view of an embodiment of the present invention, and FIG. 2 shows a side view thereof.

A main frame 2 stands upright perpendicular to the bottom plate 1, a printing device block 3 constituting a first block is attached to an opening 19 at the top of the main frame 2, and a second block constituting a second block is attached to the bottom of the main frame 2. A printing substrate supplying device block 4 is attached thereto.

As shown in FIG. 2, the printing device block 3 includes several rotary shaft groups pivotally supported by a front panel 5 and a rear panel 6, and the front surface of the front panel 5 of these shafts has each fitted roll group. It consists of a gear mechanism installed between the two panels.

The means for attaching this block 3 to the main frame 2 is as follows:
A first pin 7 that serves as a fixed support point is provided at the lower left corner of the panels 5 and 6, and the entire block 3 is held so as to rotate around this pin, and the right side of the panels 5 and 6 serves as a movable support point. A second pin 9 is provided, and this pin 9 is connected to the main frame 2.
An adjustment knob 11 provided on the upper edge 10 of the . The knob is attached so as to be adjustable by a male thread 12 at the lower end of the knob, a member 13 that pairs with the male thread, and a link 14 that connects this member to the second pin 9.

Further, stop pins 15, 16, 17° 18 are provided that project rearward from the four corners of the front panel 5, and the tips of these pins are brought into contact with the front surface of the main frame 2 to define the front-back position.

The arrangement of each printing roll group on the front side of the front panel 5 will now be described.

The embodiment shows a two-color printing device, in which the transfer roll 21
contact the first color plate roll 22 and the second color plate roll 23 at different times in order to imprint the contents on the printing material M.

The first color ink comes from the pot 24 and the ink roll 25.
The ink of the second color is supplied sequentially through the mixing rolls 26, 27, 28, and 29, and similarly, the second color ink is supplied via the fountain 34, the ink roll 35, and the mixing rolls 36, 37, 38, and 39.

Each roll can be removed by removing the screw or snap ring at the tip of the roll shaft and pulling it forward.

Figure 3 shows the power transmission mechanism.

The rotation of the motor 41 is controlled by the belt 43 through the intermediate boot IJ.
42 and 44, and further drives a pulley 46 provided on the center shaft via a belt 47, and from a center gear 45 provided on the center shaft and an intermediate gear 54 that meshes with the center gear 45, a gear 51° related to each roll is transmitted. 52.53,
55, 57, 58, 59, 65° 67, 68, 69.

The gears associated with each of these rolls are in mesh with each other and have an effective diameter equal to the diameter of each roll.

The arrangement position of the shaft supporting the intermediate pulleys 42 and 44 is the first
As shown in the drawings and FIG. 2, it is concentric with a first pin 7 provided as a fixed support point at the lower left corner of the panels 5, 6.

The printing material supply device block 4 includes an article transporting means for moving the printing material at a predetermined timing and a predetermined speed, a guide rail for regulating the running trajectory of the article, and a guide adjustment means for adjusting the support position of the guide rail. It is composed of.

FIG. 4 shows an example of an article transfer means that uses reciprocating feeding claws.

Missing tooth gear 7 that continuously lacks teeth in a portion of the entire circumference
2 is fitted onto the shaft 71 of the transfer roll 21, and the partially toothed gear 7
A rack 73 that engages with the teeth of No. 2 is slidably provided along a guide 74, and a spring 75 constantly pulls the rack 73 to the right.
Fix 1.

Further, a rod 79 projecting forward is provided on an arm 78 integrated with the rack 73, and a feed pawl 80 is attached to the front end of this rod.

Now, as shown in the figure, when the rack 73 is in the standby position at the right end, when the teeth of the partially toothed gear 72 mesh with the rack, the rack 73 and the feed pawl 80 move to the left, and eventually the partially toothed gear 72
When the gear portion reaches its end, it is disengaged from the rack, and the force of the spring 75 causes the rack 73 to return to the right at high speed.

Next, the configuration regarding the guide rail will be explained.

As shown in the side view in FIG. 2 and in the plan sectional view in FIG. Support.

A front unit 87 and a rear unit 88 are built into the box body 86, and a front guide rail 89 and a rear guide rail 90 that can be vertically displaced are provided above each unit.

The traveling line of the above-mentioned feed claw 80 is positioned between these two guide rails 89 and 90.

The front guide rail 89 regulates the lower front position of the printed product M, the rear guide rail 90 regulates the lower rear position, and both guide rails 89 and 90 can be adjusted independently in the vertical and longitudinal directions. It is configured.

To explain this adjustment device, the knob 95 located on the front
is for adjusting the vertical direction of the front guide rail 89,
As shown in FIG. 6, a worm gear 100, a worm 1
01, horizontal rotation shaft 102, two left and right pinions 103,
104, the front guide rail 89 is vertically displaced by a mechanism consisting of support rods 105, 106 in which vertically displaceable racks 117, 118 are carved.

Similarly, the knob 96 vertically displaces the rear guide rail 90.

The knob 97 is for adjusting the width of both guide rails, and as shown in FIG. This is accomplished by fitting an external thread 108 cut into the spindle 107 into an internal thread 109 attached to the rear unit 88.

Further, the knob 98 is used to adjust the front and rear positions while maintaining the width of both guide rails, and a snap ring 115° 116 that holds the front unit 87 is fitted onto a spindle 112 that rotates together with the knob 98. This is accomplished by fitting an external thread 113 formed on the spindle 112 into an internal thread 114 attached to the main frame 2.

Further, as another embodiment of the article transfer means of the present invention, a chain conveyor is provided that runs between the front and rear units 87 and 88, and is driven in conjunction with one of the roll shafts of the printing roll group. This can be carried out by appropriately arranging feeding claws on the conveyor.

In this case, it goes without saying that the arrangement pitch of the feeding claws is set to an integral multiple of the circumference of the transfer roll 21 and the chain speed is made equal to the circumferential speed of the transfer roll 21.

In addition, in the embodiment shown in FIG. 1, both the vertical adjustment of the first block and the vertical adjustment of the guide rail are made possible, but the vertical adjustment mechanism of the guide rail is omitted, that is, the knob is 95° and 96°. It is also possible to implement a modification such as omitting the guide rail and fixing the guide rail to the unit.

Although offset printing has been described above, the printing apparatus of the present invention can be similarly implemented for letterpress printing and gravure printing.

As explained above, in the present invention, the printing roll group and the printing material transfer device are driven by a motor serving as a single driving source, thereby reducing the size and weight.
The printing roll group can be easily moved up and down with respect to the main panel by rotating the adjustment knob, and even when the height of the printing object changes, it can be easily adjusted without requiring any auxiliary tools.

Furthermore, during this adjustment, since the engagement between the rolls from the ink supply device to the transfer roll remains unchanged, the ink supply amount and printing position do not change at all, and the printing condition is extremely stable.

According to the present invention, it is dramatically smaller and lighter than conventional printing machines that print three-dimensional objects, and can be used on a tabletop.
It is now possible to carry it in your hand.

Incidentally, in the embodiment shown in FIG. 1, the dimensions are width 50 crIL, depth 35 crrL, height 40 crIL,
Its weight was approximately 10 kg.

Furthermore, according to the present invention, the manufacturing process has been streamlined, the dimensional accuracy and durability of each part have been improved, and moreover, a significant cost reduction has been achieved.

Therefore, it will greatly contribute to the rationalization of electrical, mechanical, and other manufacturing industries that involve printing processes.

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of the present invention. 2 is a partially cutaway side view of FIG. 1; FIG. FIG. 3 is a diagram showing a power transmission mechanism for the printing roll group of the embodiment shown in FIG. FIG. 4 is a diagram showing essential parts of the article transfer mechanism of the embodiment shown in FIG. FIG. 5 is a plan sectional view showing the guide rail adjustment device of the embodiment shown in FIG. FIG. 6 is a perspective view showing the guide rail adjusting device of the embodiment shown in FIG. 1...Bottom plate, 2...Main frame,
3...First block, 4...Second block, 7...First pin, 9...
Second pin, 11... Adjustment knob, 21...
...Transfer roll, 22...-th color plate roll,
23...Second color plate roll, 26-29...
...Kneading roll for the first color, 36-39...Kneading roll for the second color, 41...Motor, 42,4
4...Intermediate pulley, 45...Center gear, 72...Partially missing teeth gear, 73...
Rack, 75...Spring, 80...
・Reciprocating feed claw, 89...Front guide rail, 9
0...Backward kite rail, 121...
Chain conveyor, 130...Rotating feed claw.

Claims (1)

[Claims] 1. A group of printing rolls such as a kneading roll, a plate roll, and a transfer roll are arranged in front of the block substrate, and behind the block substrate, a group of gears fitted to the rotating shaft of each roll of the printing roll group, and a first block provided with a center gear that engages with a gear group; and an intermediate pulley that is pivotally supported on a part of the end of the block substrate and transmits rotation of a motor to rotationally drive the center gear; a second block comprising a guide rail for sliding along a predetermined trajectory and a transfer device for transporting the printed article to a predetermined printing position in synchronization with the rotation angle of the printing roll; a main frame having a substantially vertical surface when installed in the pipe; the first block is mounted on the upper part of the main frame so as to be rotatable about the axis of the intermediate pulley; The other end of the block substrate of the first block is engaged with an adjustment member that is vertically displaceable with respect to the main frame, the second block is attached to the lower part of the main frame, and the first block is A small-sized printing machine whose printing material is a three-dimensional article configured to be vertically adjustable with respect to the second block.