KR0168226B1 - Two-face printer using two drums - Google Patents

Abstract

The present invention is a two-sided rotary type plate press using a two drum type, and adds a push means for controlling the power transmission with the gear mechanism to cover the master paper on the second drum, each plate making master for both sides on both drums A guide passage for guiding the paper is installed, and a register roller and a feed roller are installed in the middle of the guide passage, so that the printing paper is moved with the register roller, and the feed roller is in charge of guiding the master paper to the second drum. At the bottom of the guide passage, a guide plate is provided to provide a passage so that the master paper is wound around the drum. Both sides can be printed at the same time, improving printing speed and reducing noise by eliminating the need for a separate press roller.

Description

Double-sided stencil press using two drums

1 is a structural diagram of the present invention.

2 is a perspective view showing only the drum used in the present invention.

3 is a process of mounting a printing film sheet on the first drum of the present invention.

Figure 4 is a process diagram before mounting the printing film sheet on the second drum of the present invention.

5 is a process of mounting the printing film sheet on the second drum of the present invention.

6 is an explanatory diagram showing a duplex printing state of the present invention.

* Explanation of symbols for main parts of the drawings

10: first drum 11: clamp

12 side 13 outer gear

14 axis 20 second drum

21: clamp 22: side

23: external gear 24: axis

30: push means 31: rod

40: gear mechanism 41: first drive gear

42: first driven gear 43: second driven gear

44 belt 45 third driven gear

46: second drive gear S: master

P: Paper

The present invention relates to a double-sided stencil printing machine using two drums, and in particular, the first and second guide passages are formed between the register roller and the feed roller to provide a printing film sheet forming both sides to the corresponding drum. You can print at the same time.

In general, the printing unit of the rotary stencil printing apparatus is generally composed of a drum equipped with an ink supply device for supplying ink in the drum, and a press roller for printing the paper and the paper between the drum and the printing paper during printing. . Normally, when the printing is not done, the press roller is separated from the drum, and during printing, the drum and the press roller have to go through every drop of the drum in order for the clamp to pass, so the press roller always moves up and down. The problem of noise arises.

In addition, when duplex printing is required, a cumbersome task is that a person must manually reload the printed sheet printed on one side in order to feed the printed sheet to the drum again, or return to the printing sheet supply unit inside the printing apparatus. There is a disadvantage that a separate mechanism to go there is required.

The present invention is to eliminate the press roller and to use the two drums of the same diameter instead of single-sided printing as well as double-sided printing at once, to solve the problems of vibration and noise caused by the vertical movement of the press roller It is characterized by.

That is, the present invention is the first gear and the second drum to be inter-gear coupled to the outer gear to the side of the stencil drum, each having a clamp; Push means is coupled to the shaft of the second drum to connect or release the gear coupling with the first drum; A gear mechanism for transmitting power from the axis of the first drum to release the gear coupling between the second drum and the first drum to provide magnetic force to the second drum; A pair of register rollers for supplying printing paper so as to be orthogonal to the axes of the first and second drums; The conveying path is connected by a feed roller which is in contact with one of the register rollers to guide the double-sided printing film sheet in order from the plate making section to the first drum and the second drum, and the first plate has a guide plate on the bottom. And a second guide passage.

The first guide passage is provided with a guide plate hinged to the bottom surface so as to block the passage to guide the transfer of the print film sheet to the clamp of the first drum or to open the passage to the feed roller.

The second guide passage has a structure in which the feed roller and the corresponding register roller are inclined upwardly, and the bottom surface of the inlet side blocks the bottom surface for the first transfer of the print film sheet, and the bottom surface is opened after the completion of the transfer. Guide plate made to guide the installation is installed.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 is a structural diagram of the present invention, and FIG. 2 is a perspective view showing only the drum of the present invention, and the outer gears 13 and 23 are mutually coupled to the side surfaces 12 and 22 of the stencil printing machine, respectively, and the clamps 11, First and second drums 10, 20 having 21); A rod 31 connected to the shaft 24 of the second drum 20 to connect or release the gear coupling with the first drum 10; After the gear coupling between the second drum 20 and the first drum 10 is released, power is transmitted from the shaft 14 of the first drum 10 to provide magnetic force to the second drum 20. Gear mechanism 40; A pair of register rollers 51 and 52 for supplying printing paper P so as to be orthogonal to the lines 14 and 24 of the first and second drums 10 and 20; One roller 52 of one of the register rollers 51 and 52 guides the duplex printing film sheets S1 and S2 from the plate making unit 80 to the first drum 10 and the second drum 20 in order. The feed path is connected by feed rollers 53 to be in contact with each other, and includes first and second guide passages 60 and 70 having guide plates 61 and 71 on the bottom surface, respectively.

One surface of the lower surface of the first guide passage 60 blocks the passage to guide the transfer of the print film sheet S to the clamp 11 of the first drum 10 or opens the passage to the feed roller 53. Guide plate 61 hinged to the bottom surface is installed to be.

The second guide passage 70 has a structure in which the feed roller 53 and the corresponding register roller 52 are inclined upwardly as an inlet, and the bottom surface of the inlet side is to transfer the printing film sheet S2 to the first transfer. After the transfer is completed, the guide plate 71 is formed to guide the second drum clamp 21 to open the bottom surface.

The end of the first guide passage 60 extends to a portion that does not touch the printing paper P supply passage through the pair of register rollers 51 and 52, and the printing paper P and the first guide passage 60 are separated from each other. The inclined portion 62 is formed to have an acute end.

A guide bar 72 for guiding the printing film sheet S2 wound on the second drum 20 is added to the bottom surface of the inlet side of the second guide passage 70.

The guide bar 72 is installed on the bottom surface at an angle corresponding to the inclination angle when the guide plate 71 is opened.

The gear mechanism 40 includes a first drive gear 41 which is fixed to the shaft 14 of the first drum 10 to provide power, and first and second powers sequentially received from the first drive gear 41. The third driven gear 45 which is powered by the belt 44 from the shafts of the second driven gears 42 and 43 and the second driven gear 43 and is affixed to the shaft 24 of the second drum 20. It consists of a second drive gear 46 for providing power to the selection.

The push means 30 may exemplify a solenoid having a push function by stretching and contracting, or may use a cylinder having a push function.

It is preferable that the clamps 11 and 12 of the first and second drums 10 and 20 be assembled and configured to abut at the same point in printing.

Referring to the printing process of the rotary stencil printing machine using the two drums of the present invention configured as described above are as follows.

Referring to FIG. 3, first, one side of an original to be printed by the plate making unit 80 is read, and an image to be printed on the master paper S1, which is a printing film sheet, is punched out.

Referring to FIG. 3, first, one side of an original to be printed is read by the plate making unit 80, and a perforated image to be printed on the master sheet S1, which is a printing film sheet, is made. At the same time, the first drum 10 and the second drum 20 are separated by the solenoid 30, which is a pushing means, as shown in the figure, so that the second drum 20 moves toward the second driving gear 46 and the third driven gear. 45 and the second drive gear 46 are engaged. Master paper (S1) is finished in the plate making unit 80 is transported along the guide passage (60). At this time, the guide plate 61 is rotated by a predetermined angle in the clockwise direction so that the front end portion of the master paper (S1) falls toward the first drum (10) and the clamp (11) of the first drum (10) is the master paper (S1) Reached the position where the tip of the can be bitten. The master paper S1 is wound around the first drum 10 by the clamp 11. The input of power enters the drive gear 41 of the first drum 1 (not shown in the power source), and the rotational directions of the drums 10 and 20 and the gear mechanism 40 are the same as the direction of the arrow.

Subsequently, the movement of the master paper S2 during double-sided printing is performed as shown in FIGS. 4 and 5. That is, as shown in Fig. 2, the master paper S1, which is punched on one side of the original to be printed, is wound on the first drum 10, and then the opposite side is read to make the image to be printed on the master paper S2. . Finishing the master paper (S2) is moved between the feed roller 53 and the register roller 52 along the guide 61. At this time, the guide plate 61 is not opened. The master paper S2 passed between the feed roller 53 and the register roller 52 moves again along the guide passage 70 and when the master paper S2 exits between the two rollers 52 and 53, the master paper S2 passes. The guide plate 71 is opened downward as shown in FIG. Thus, the rear end of the master paper (S2) is bitten by the clamp 21 of the second drum 20, and finally the master paper (S2) is wound around the second drum (20).

When printing only one side of the original, the master S, which has perforated images on only one of the two drums, may be wound, and the master, which is not perforated, may be wound on the other drum to prevent contamination of the ink on the side which is not printed.

After the plate making is finished, the printing paper P is supplied and printed as shown in FIG. 6. When the master papers S1 and S2, which are printing film sheets, are wound on the two drums 10 and 20, the solenoid 30 The driven gear 45 is removed from the second drive gear 46. Thus, transmission of power is directly transmitted from the first drum 10 to the second drum 20 (which can be driven by the outer gears 13 and 23 shown in FIG. 2). The printing is performed on both sides or one side according to the state of the master papers S1 and S2 supplied between the register rollers 51 and 52 and wound on the drums 10 and 20. At this time, both drums 10 and 20 are in contact with the drum surface, so that a separate press roller is not required and noise is reduced. Of course, the rotation of the register rollers 51 and 52 and the feed roller 53 rotates in the same direction as in FIG. 6 when feeding the paper P and when feeding the master paper S2 to the second drum 20. Rotation in the direction of the arrow shown in 4, the power transmission at this time can be implemented by a number of known techniques, so the illustration and description of the power drive mechanism is omitted. In addition, when the printing paper P is not provided in the present invention, it is essential that the rotation of the drums 10 and 20 be blocked to protect the master paper S1 and S2. As described above, in the present invention, two drums of the rotary stencil printing machine are rotated to rotate, and the two-sided printing film sheet is sequentially wound on both drums through the guide passage, and the printing paper is fed in the middle of the guide passage. By allowing both sides to be printed at the same time, the printing speed is increased, and both drums abut, so that the press roller does not need to move up and down at the clamp portion during a single drum, thereby reducing noise.

Claims (9)

First and second drums (10, 20) having mutually coupled gears with outer gears (13, 23) on side surfaces (12, 22) of the stencil printing press and having clamps (11, 21), respectively; A rod 31 connected to the shaft 24 of the second drum 20 to connect or release the gear coupling with the first drum 10; After the gear coupling between the second drum 20 and the first drum 10 is released, power is transmitted from the shaft 14 of the first drum 10 to provide magnetic force to the second drum 20. Gear mechanism 40; A pair of register rollers 51 and 52 for supplying printing paper P so as to be orthogonal to the lines 14 and 24 of the first and second drums 10 and 20; One roller 52 of one of the register rollers 51 and 52 guides the duplex printing film sheets S1 and S2 from the plate making unit 80 to the first drum 10 and the second drum 20 in order. The conveying path is connected by the sliding feed roller 53, and the first and second guide passages 60 and 70 having guide plates 61 and 71 on the bottom surface are respectively provided. Double-sided stencil printing machine using drum. The method of claim 1, wherein the first guide passage (60) at one place to block the passage to guide the transfer of the printing film sheet (S) to the clamp (11) of the first drum (10) or to the feed roller (53) A two-sided plate printing machine using two drums, characterized in that the guide plate 61 is hinged to the bottom surface to open the passage so as to open the passage. The second guide passage (70) has a structure in which the feed roller (53) and the corresponding register roller (52) are inclined upwardly, and the printing film sheet (S2) is formed on the bottom surface of the inlet side. The double-sided plate using two drums, characterized in that the guide plate 71 made of a guide to the second drum clamp 21 to block the bottom surface and open the bottom surface after the transfer is completed. The end of the first guide passage 60 extends to a portion which does not touch the printing paper P supply path through the pair of register rollers 51 and 52, and the printing paper P. And the end of the first guide passageway 60 is a double-sided plate using two drums, characterized in that the inclined portion 62 is formed to form an acute angle. According to claim 1 or 3, wherein the guide bar 72 for guiding the printing film sheet (S2) wound on the second drum 20 is added to the bottom surface of the inlet side of the second guide passage (70). Double sided board using two drums characterized by. 6. The double-sided stencil plate using two drums according to claim 5, wherein the guide bar (72) is installed on the bottom surface at an angle corresponding to the inclination angle when the guide plate (71) is opened. 2. The gear mechanism (40) according to claim 1, wherein the gear mechanism (40) is sequentially applied from the first drive gear (41) and the first drive gear (41), which are secured to the shaft (14) of the first drum (10) to provide power. The first and second driven gears 42 and 43 and the second driven gears 43 receive power from the shaft 44 to the belt 44 and are pressed against the shaft 24 of the second drum 20. Double-sided plate using two drums, characterized in that consisting of a second drive gear 46 for providing power to the three driven gear (45). The two-sided stencil machine according to claim 1, wherein the push means (30) is a solenoid having a push function by stretching and contracting. The double-sided press using two drums according to claim 1, wherein the clamps (11, 12) of the first and second drums (10, 20) are configured to abut at the same point as the printing press.