JPS60262648A - Paper feeder for printer - Google Patents

Abstract

PURPOSE:To feed paper normally from a laminating device by stopping a serrated belt or chain with a protrusion by a detection signal from an improper paper detection device provided near the outlet of a paper separation and feeder. CONSTITUTION:Paper fed to a paper feeder table 4 from a feeder belt 2 through a pair of feeding rollers 3 is sent to impression cylinder 9 by pushing paper by a protrusion 6 of a serrated belt 5 located under the table 4. Paper printed between a rubber roller 8 and the impression cylinder 9 is stored into a paper delivery device 11 through a pair of paper delivery rollers 10. A solenoid 13 receiving a detection signal from an improper paper detection device 12, 12 turns an L-type lever and moves a grooved pulley 9C, thus disengaging a clutch 14, and stopping the belt 2 and the serrated belt 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The purpose of the present invention is to prevent paper from being fed from a stacking device, or even if it is fed, but not at the right timing with the printing device, or when two or three sheets are printed at a time. An object of the present invention is to provide a paper feeding device for a printing press that prevents paper from being fed to a printing device in an overlapping manner or at an incorrect position with respect to the paper feeding direction.

In order to achieve the above object, the present invention provides a toothed belt or chain with at least a few protrusions, and a fraudulent paper detection device is provided near the exit of the paper separating and feeding device. A clutch device is provided that disengages the printing device and the toothed belt or chain in response to a detection signal from the button device and stops the toothed belt or chain at a fixed position.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view of a paper feeding device of an offset printing machine using an offset printing machine as a printing machine, and FIG. 2 is a plan view of the paper feeding device.

The heald 2 separates and supplies paper in the paper stacking device 1 from below using contact friction (or from above using vacuum). Driven intermittently by a drive mechanism. Next, the paper P is fed onto the paper feed table 4 by the paper feed roller pair 3. The members 2 and 3 constitute a device that separates and supplies paper. A chain or toothed heddle 5 is provided below the paper feed table 4. A paper feeding protrusion 6 protruding from the outside of this chain or toothed heddle is provided. The protrusion 6 extends over the range where the protrusion 6 collides with the paper feed table 4 while the belt or chain is rotating.
A slit groove 7 is provided in the paper feed table 4 to allow free movement of the paper feed table 4. Components 4.5.6.7 constitute a paper feeding device.

In this embodiment, since two protrusions 6 are provided, the paper sent from the supply heddle 2 to the paper feed table 4 via the paper feed roller pair 3 is pushed by the protrusions of the toothed belt under the table 4. The paper that is then fed onto the table is fed to the impression cylinder by another projection 6. The number of protrusions 6 is determined by the ratio of the rotational speed of the impression cylinder and the rotational speed of the toothed heald.

In this embodiment, the toothed heald rotates once for every two rotations of the impression cylinder. The paper sent between the blanket cylinder 8 and the impression cylinder 9 is printed and stored in a paper discharge device 11 via a pair of paper discharge rollers 10.

The blanket cylinder 8 and the impression cylinder 9 constitute a printing device.

A fraudulent paper detection device 12.12 for detecting when two to three overlapping sheets of paper pass through the pair of paper feed rollers 3 at a time is arranged near the exit of the pair of paper feed rollers. As this detection device, for example, a mechanical detection device having an opening equal to the thickness of a sheet of paper or a photoelectric detection device that detects by shining light from above and detecting by a decrease in the amount of transmitted light downward can be used. Note that this fraudulent paper detection device detects cases where the paper is not being fed normally (such as when the paper is not being fed from the paper feed roller pair, or when the timing of printing with the impression cylinder is not aligned even when the paper is being fed). However, for convenience of explanation, only the function of detecting the passage of two or three overlapping sheets of paper will be explained.

In the plan view including a partial cross section of FIG.
When the solenoid 13 receives the detection signal from the L-shape, it rotates the L-shape bar and pushes the groove wheel 9C upward in the figure through a roller attached to the tip of the bar to disengage the clutch 14. Then, the spur gear 9b rotatable with respect to the shaft 9a, which will be described later, and the groove wheel 9c, which rotates integrally with the shaft 9a, are disengaged, and the rotation of the heald 2 and toothed heald 5, which separates and supplies the paper, is stopped. . The member 13, the L-shaped bar, and the member 14 constitute a clutch device. Therefore, the overlapped paper is not sent between the blanket cylinder and the impression cylinder, and the overlapped paper can be removed from the detection device.

In this case, even if the rotation of the toothed heald 5 stops, the impression cylinder 9 and the groove wheel 9c are integral with the shaft 9a, so the impression cylinder continues to rotate. However, such a mechanism (for example, an eccentric mechanism) is used that the contact between the blanket cylinder and the impression cylinder is broken until the next sheet is fed, and no transfer occurs from the blanket cylinder to the impression cylinder.

When the clutch 14 is re-engaged, the paper should not be tilted vertically between the impression cylinder and the blanket cylinder (as if it were being fed).
Of course, the rotation of the paper supply belt 2 and the painter's heddle 5 is stopped. The impression cylinder 9 is rotated by a drive source (not shown) via a gear on the opposite side of the groove wheel 9c.

In addition, in case it is necessary to check the printing paper in the paper discharge device 11 and correct the printing position with respect to the top and bottom of the paper (the front and back direction of paper feeding), the paper feeding protrusion and impression cylinder It is possible to change the phase of the image or install a vertical orientation adjustment device.

A shaft 15 is provided between the shaft 5a of the toothed roller of the toothed belt 5 and the shaft 9a of the impression cylinder 9.
It is slidably installed. At the other end of the shaft 5, a spur gear 15b meshing with a spur gear 9b rotatably provided on the shaft 9a of the impression cylinder 9 and a helical gear 15c integrated therewith are attached to the shaft 15.
It is rotatably mounted. The helical gear 15C meshes with a helical gear 5b that is integrated with the rotating shaft 5a of the roller of the toothed heald 5. An adjustment knob 15 is provided at one end of the shaft 5.
d is fixed at ℃・ru. By rotating the adjustment knob 15d, the shaft 15 is moved forward and backward relative to the side frame 16, thereby changing the mutual meshing position of the helical gears 15c and 5b. This allows the phase of the protrusion 6 on the toothed belt 5 and the impression cylinder 9 to be changed. Note that the number of teeth of the spur gears 9b, 15b and the number of teeth of the helical gears 15c, 5b are determined to match each speed ratio of the impression cylinder and the toothed belt.

In FIG. 1, 17 is an inking device, 18 is a dampening water device, and 1 is a plate cylinder. The shafts of each member 3,5°9,10,15 are respectively attached to the side frame 16. In addition,
In FIG. 2, if the side plate 20, which regulates the lateral position of the filter paper, is installed on the paper feed table 4, for example, so that the width of the side plate 20, which regulates the lateral position of the filter paper, is installed on the paper feed table 4, a fraudulent paper detection device can be used. Even if the paper should be removed as incorrect paper in Step 12, it can be corrected by sending it as is and passing it between the side plates.
・Printing can be done at the position.

The operation of the paper feeding device configured as above will be explained below.

The paper P is separated and supplied by a belt 2 that is driven intermittently.
is conveyed to a paper feed roller pair 3, and the paper P is conveyed to a paper feed table 4 by the paper feed roller pair.

(b) When the paper feed is normal, a sheet of paper P passes through the side plate, its horizontal position is adjusted by the paper feeding protrusion 6, and is fed between the blanket cylinder 8 and the impression cylinder 9 to be printed. Thereafter, the printed paper is stored in the paper ejection device 11 by the paper ejection roller pair 10.

(b) When the printing position of the printing paper in the paper discharge device 11 needs to be corrected, the vertical registration adjustment device sends the paper whose horizontal position has been regulated through the side plate without stopping the operation of the printing press. Rotate the adjustment knob 15d to change the meshing position of the helical gear 5b and helical gear 15c of the toothed heald, change the phase of the paper feeding protrusion 6 and the impression cylinder 9, and change the state. The paper is held between the impression cylinder and the blanket cylinder for printing, and the printed paper is stored in the paper discharge device.

(c) If the paper feed is incorrect, the incorrect paper detection device 12 is activated, this detection signal is transmitted to the solenoid 13, and the engagement of the clutch 14 is released via the L-shaped bar. The rotation of the impression cylinder 9 is not transmitted to the spur gear 9b. Therefore, spur gear 9b → spur gear 15b → helical gear 15c
→The rotation of the toothed belt is stopped via the transmission system of the helical gear 5b.The rotation of the paper separation and supply belt 20 is also stopped, and of course the rotation of the paper separation and supply belt 2 is also stopped. When the fraudulent paper is removed from the detection device 12, the solenoid 13 is deactivated, the clutch 14 engages again, and the toothed belt resumes rotation. Paper normally fed through the paper supply belt → toothed belt → side plate is printed on the impression cylinder and blanket cylinder, and then stored in the paper discharge device 11.

According to the present invention configured as described above, paper is normally sent from the paper stacking device to the printing device. Furthermore, fine adjustments to the vertical register can be easily made while the printing press is running.

[Brief explanation of the drawing]

FIG. 1 is a side view of a paper feeding device of a printing press according to the present invention, and FIG. 2 is a plan view. [Explanation of symbols of main parts] 12... Fraudulent paper detection device 9b, 15b... Spur gear 15c, 5b... Helical gear 15d... Adjustment knob 1 Figure 2 Procedure according to Figure 1 DA Amendment July 24, 1980 Commissioner of the Patent Office Gakudono Shiga 1 Matters! 1 indication 1982 patent 1174
66 Application No. 2 Name of the invention Printing machine paper feeding device; 3 Relationship with the name note to be amended Patent applicant NjJ Person 1 Place: 2-16-9 Hirai, Edogawa-ku, Tokyo 4 Agent 5; Target of amendment (1) “Claims” column in the specification (2) “Detailed description of the invention” column in the specification (3) “Brief description of drawings” column in the specification (1) The "Scope of Claims" is amended as shown in the attached sheet. (2) Page 2 of the specification: In line A-19, after “a machine is provided,” it is followed by “an interlocking device that interlocks the printing device, a toothed belt or chain, and a device for separating and supplying paper is provided.” ,” is added. (3) "Cancel the interlocking of" in the second line of page 6 of the same page is corrected to "cancel the interlocking of the interlocking device between." (4) Correct "Axis 5" in the 8th line of the same off-line as "Axis 15". (5) In the 12th line of the same page, next to "It's attached.""In addition, the integral spur gear 15b and the cob gear 15C mean that the shaft 15 moves forward and backward in a direction perpendicular to the frame as described below. (6) Correct "Axis 5" on the 14th line of 'A, same page as above, to "Axis 15". (7) Description Next to "ru." in the 4th line of page 8, "2 members 5a, 51), i 5, 15b. 15C, 9a, 9b, 9c, 141: Yotsu A belt or chain. It constitutes an interlocking device that interlocks the paper supply belt 2.
Add. (8) Same as above, same page'A, lines 12 to 2 and 13, "If it is provided, send it as it is" is replaced with "It may be provided. In this case, (2) Correct the size of the P that has passed through the devices 2 and 6 (width adjusted by the two). (9) In the 9th line of page 9 of the same page, change ``If a correction occurs'' to ``In case of a correction.'' 00 Same as above, page 10, line 5, "stop paper" is corrected as "stop paper". 01) Same as above, page 6] 〇[12+Specification page 10, line 6 to off line ``Of course...'' is corrected to ``stop.''
...Rotation also stops. ” to be deleted. f131 Same-h spear 11m spear 2nd line~, 118th line [)[
[Explanation of symbols of main parts]" is corrected as follows. [Explanation of symbols of main parts] Z: I H=Kun-W!A; 6R/ 1 Paper separating and feeding device 12... Fraudulent paper detection device 15d... Adjustment knob 2, Patent claim Scope 1: In a paper feeding device of a printing press comprising at least a device for separating and feeding two sheets of paper in order from the paper feeding side and a paper feeding device for feeding the fed paper to the printing device. An interlocking device is provided that constitutes the paper feeding device with a toothed belt or a chain attached thereto. A fraudulent paper detecting device is provided near the exit of the paper separating and feeding device. A detection signal from the fraudulent paper detecting device ( 2. Therefore, a clutch device is provided to stop the printing device and the toothed belt or the chain at a fixed position.Paper feeding device of the printing press. A paper feeding device according to claim 1, in which a vertical registration adjustment device for changing the phase of the toothed belt or chain and the printing device is provided in conjunction with the toothed belt or chain. The paper feeding device according to claim 1 or 'A-2 (2) can be adjusted.

Claims (1)

[Scope of Claims] 1. A paper feeding device of a printing press including at least a device for separating and feeding paper from the paper feeding side and a paper feeding device for feeding the fed paper to a printing device, in which at least one The paper feeding device is composed of a toothed heddle or chain with a paper feeding protrusion, and a fraudulent paper detection device is provided near the exit of the paper separating and feeding device, and a detection signal from the fraudulent paper detection device is used to detect the paper. A paper feeding device for a printing press, comprising a clutch device that disengages the printing device from the toothed heald or chain and stops the belt or chain at a fixed position. 2. Claim 1, which is provided with a vertical register adjustment device that changes the phase of the toothed belt or chain and the printing device in conjunction with the toothed belt or chain so that the printing position in the vertical direction with respect to paper feeding can be adjusted. Paper feeding device as described in section. 3. The paper feeding device according to claim 1 or 2, wherein the toothed belt or chain is provided with a side plate that regulates the lateral position of the paper on the toothed belt or chain.