JPS5831306B2 - Printing machine that prints on three-dimensional objects - Google Patents

Description

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

Conventional printing machines of this type, for example, have a method in which holding jigs for the printed material are attached at regular intervals on a chain conveyor and conveyed to the printing position, but when the shape and size of the printed material changes, many However, this method still has the disadvantage that it is not possible to print on articles that do not fit the previously prepared jig.

In addition, conventional printing machines of this type were manufactured to be installed on the floor, and the printing position was usually designed at the worker's waist or chest height, making the entire machine large and heavy.
Moreover, it had the disadvantage of being expensive.

An object of the present invention is to provide a small and lightweight printing machine that is easy to carry and can be installed on a tabletop, while also being able to accurately print in a predetermined position regardless of the shape or size of the printed product. Our objective is to provide a general-purpose, small-sized printing press.

In summary, the printing press of the present invention has first, second, third, and fourth adjustment shafts that are rotated by four knobs that can be operated by a user, and a fixed shaft that protrudes from the front and rear of the substrate. It has two front and rear rail support units that can be displaced independently from each other in the front and back direction, and a guide rail that is provided for each of the two rail support units so that it can be freely displaced in the vertical direction. The guide rail is characterized by being configured so that both the front and rear and upper and lower positions of the guide rail can be adjusted independently of each other.

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 perpendicularly 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 is attached to the bottom of the main frame 2. A printing material supply device block 4 is attached thereto.

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

The means for attaching this block 3 to the main frame 3 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.
Adjustable mounting is provided by an adjustment knob 11 provided on the upper edge 10, 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 with the second pin 9. ing.

In addition, 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 is sequentially supplied from the pot 24 and the ink roll 25 via the kneading rolls 26, 27, 28, and 29. Similarly, the second color ink is supplied to the pot 34, the ink roll 35, and the kneading roll 36. , 37, 38, 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.

A pulley 46 associated with the center shaft is driven via a motor 41, a pulley 42, and a pulley 44, and a gear 51, 52, 53, 55, associated with each roll is driven from a center gear 45 provided on the center shaft and an intermediate gear 54 that meshes with it. 57,
58, 59, 65, 67.68°69.

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

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 shaft of the partially toothed gear 72 engages with the rack, the rack 73 and the feed pawl 8d move to the left, and eventually the partially toothed gear 72
When the gear portion reaches its end, it is no longer held together with the rack and the rack 73 returns to the right at high speed by the force of the spring 75.

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.

Inside the box 86 are a first rail support unit 87 and a second rail support unit 87.
A front guide rail 89 and a rear guide rail 90 which are slidably fitted onto fixed shafts 84 and 85 and are movable in the vertical direction are provided above each rail support unit 88 .

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 composed of

To explain this adjustment device, there is a knob 95 arranged on the front.
is for adjusting the vertical direction of the front guide rail 89,
As shown in FIG. 6, it is formed at one end of an adjustment rotation shaft 102 provided in the first rail support unit 87.
A worm 101 fixed to the adjustment rotation shaft 102, a worm gear 100 that meshes with the worm 101, two pinions 103 and 104 provided on the left and right sides of the horizontal rotation shaft 99 to which the worm gear 100 is fixed, and are displaced in the vertical direction. Support rod 105 carved with racks 117 and 118
．． The front guide rail 89 is vertically displaced by a mechanism consisting of 106.

Similarly, a knob 96 is formed at one end of another similar adjustment rotation shaft to vertically displace the rear guide rail 90.

The knob 97 is used to adjust the width of both guide rails, and as shown in FIG. At the same time as fitting, connect the male screw 108 carved on the adjustment shaft 107 to the rear unit 8.
This is accomplished by fitting the internal screw 109 into the internal thread 109.

Further, the knob 98 is used to adjust the front and rear positions while maintaining the width of both guide rails, and snap rings 115 and 116 that sandwich the first rail support unit 87 are attached to an adjustment shaft 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.

As another embodiment of the present invention, one of the two knobs for adjusting the guide rail in the front and back direction is used to adjust only the front and rear direction of the front guide rail with the box as a reference, and the other knob is used to adjust the front and rear guide rails in the front and rear directions with respect to the box. As a reference, only the longitudinal direction of the rear guide rail may be adjusted.

Furthermore, the two knobs that adjust the guide rail in the vertical direction can be used, for example, as one that adjusts the vertical direction of the entire box body 86, and as one that adjusts the relative height difference between the two guide rails 89 and 90. good.

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

According to the present invention, the two guide rails can be independently adjusted up and down and forward and backward as desired by rotating the operating parts such as knobs formed at one end of a total of four adjustment shafts in FIG. As illustrated in Figures A and B, even if the cross-sectional shape is asymmetric, or the printed surface and the opposite side are non-parallel, the printed surface can be transferred. It is possible to completely contact the roll 21 and to print at any position on the substrate.

Furthermore, according to the present invention, the feed pawl for transporting the printed product and the guide rail for regulating the transport trajectory of the printed product are provided completely independently, so that the shape and dimensions of the product do not change. In this case, you only need to adjust the guide rail.
Continuous supply and continuous removal of articles to the printing machine becomes easy, making it extremely easy for users to use, and
Related parts such as the synchronization device between the printing device and the feed pawl have been extremely simplified.

Furthermore, as shown in the example, when providing a knob for adjusting the width of both guide rails and a knob for adjusting the overall longitudinal position while maintaining the width, first adjust the guide width according to the article. After the adjustment, the position of the entire guide rail can be adjusted to match the printing position, making the alignment work easier.

[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. FIG. 7 is an explanatory diagram of the operation of the present invention. 1...Bottom plate, 2...Main frame,
5... Front panel, 21... Transfer roll, 22... First color plate roll, 23...
...Second color plate roll, 26-29...Kneading roll for first color, 36-39...Kneading roll for second color, 80...Feeding claw , 89...Front guide rail, 90...Rear guide rail, 9
5...Front guide rail vertical adjustment knob, 96
・・・・・・Rear guide rail up and down adjustment knob, 97・
...Guide rail width adjustment knob, 98...
- Knob for adjusting the guide rail front and back position.

Claims (1)

[Claims] 1 A group of printing rolls such as a kneading roll, a plate roll, a transfer roll, etc. arranged in front of a substantially vertical substrate, and a rotation angle synchronized with the rotation angle of the final roll that directly contacts the printing substrate among the printing rolls, and A feed pawl that transports the printed product at the same speed as the circumferential speed of the final roll, two guide rails provided to regulate the transfer trajectory of the printed product, and a fixed shaft that protrudes forward from the board. first and second rail support units that are slidably provided against the two guide rails and support the two guide rails so as to be movable in the vertical direction, respectively, and the first and second rail support units; first and second adjustment shafts that engage with each other and slide the first and second rail support units respectively along the fixed shafts by rotation of an operating portion formed at one end of each; The two guide rails are vertically displaced on the first and second rail support units by rotation of an operating section that is attached to each of the first and second rail support units and formed at one end of each. A printing machine for printing three-dimensional articles, which is provided with third and fourth adjustment shafts for adjusting the size of the object.