JPH0780796A - Cutting drum device - Google Patents

Abstract

PURPOSE:To improve the separation of cut pieces from needles with free appearance by providing rammers protruded when the needles are immersed between two blades in a cutting drum device for cutting rotary paper such as a pamphlet vertically folded by means of a pamphlet manufacturing machine by gutter dropping. CONSTITUTION:A cutting drum 10 and a receiving drum 11 are supported by a shaft for synchronous rotation. A cam shaft 14 having alternately provided cams 15 for needles 15 and cams 16 for rammers is penetrated through the shaft center part of the cutting drum 10. On the outer peripheral part of the cutting drum 10 are planted two blades having a length over the total length of the cutting drum 10 by spaced from each other in the rotary direction. Needles 18 and rammers 19 are alternately provided with free appearance in the radial direction between both the blades. In passing travelling rotary paper through between both the drums 10, 11, the rotary paper is cut by gutter dropping with the aid of both the blades. In this case, the needles 18 protrude to pierce a blanking piece. The blanking piece moves with the needles 18 in the peripheral direction. The needles 18 are immersed in at the position for rotating the cutting drum 10 by 10 degrees; the rammers 19 are protruded to drop the cutting pieces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching cylinder device arranged downstream of a vertical folding portion of a booklet making machine or the like and for cutting a rotary paper such as a vertically folded booklet by dobbing. Is.

[0002]

2. Description of the Related Art FIG. 1 shows a booklet manufacturing apparatus 1 for carrying out the apparatus of the present invention. The booklet manufacturing apparatus 1 includes a gluing section 2, a collecting section 3, a vertical folding section 4, a sheet cutter section 5, a pile. A plurality of rotary press sheets 7 and 8 composed of a stacker portion 6 and the like are linearly glued to the widthwise central portion by the glue portion 2 and then stacked on the gathering portion 3, and then the vertical folding portion 4 is formed. Is vertically folded (plow-folded), and is folded in half to be cut into a predetermined size in the up-and-down direction by dropping the sheet in the sheet cutter unit 5.

The conventional punching cylinder device A in the above-mentioned sheet cutter section 5 punches a rotary web into strips with two blades provided on the punching cylinder so as to be spaced apart from each other in the vertical direction, and the punching pieces are cut into the punching cylinder. It is pierced and held by a needle that is installed so that it can be withdrawn and retracted according to the rotation of the extraction cylinder, and it is inserted with the extraction cylinder half-turned to separate the punched piece. The suction device 9 disposed above the body sucks and discharges.

[0004]

The sheet cutter section 5 described above.
In this case, as described above, the punching piece is held by the protruding needle on the side of the pulling-out barrel, and is formed by being retracted, so that the needle is held well by the protruding movement. , The release due to immersion did not work well, and the punched piece remained as it was on the side of the punching body and was sometimes caught. This is because even if the needle is immersed in the extraction cylinder, the punching piece does not come off from the tip of the needle and remains stuck in the needle.

In order to solve this problem, the stroke of retracting the needle may be increased. However, if this stroke is increased, the rotation speed of the removing cylinder cannot be increased and the resistance of the cam mechanism for performing the retracting operation is increased. There will be problems such as

The present invention has been conceived in view of the above, and it is possible to satisfactorily dislodge the punched piece in a state where the punching cylinder is rotated at a high speed. It is an object of the present invention to provide a punching cylinder device capable of preventing the winding of the punching cylinder.

[0007]

In order to achieve the above object, a punching cylinder device according to the present invention has a punching cylinder 10 and a receiving cylinder 11 that are opposed to each other so that the facing portions rotate in the same direction. Two blades 17a and 17b are planted on the outer peripheral portion of the removing cylinder 10 so as to be spaced apart from each other in the vertical direction, and the two blades 17a and 17b are also provided.
When the blades 17a and 17b face the receiving cylinder 11 between a and 17b, they protrude from the outer periphery of the extracting cylinder 10 and
A needle 18 which is adapted to be gradually retracted in accordance with the rotation of the
A push rod 19 is provided between a and 17b so as to project and retract when the needle 18 is retracted.

[0008]

[Operation] The needle 18 and the thrust bar 19 alternately move in and out with respect to the peripheral surface of the extraction cylinder 10 as the extraction cylinder 10 rotates, and the blade 1
The punched pieces punched by 7a and 17b are pierced by the needle 18 to move, and the punch bar 19 projects at the position where the needle 18 is retracted, and the punched piece is forcibly separated from the needle 18.

[0009]

EXAMPLE An example of the present invention will be described with reference to FIG. In the figure, reference numeral 10 is a pull-out cylinder, 11 is a receiving cylinder, and the left and right frames 1 and 11 are arranged so that their opposing surfaces move in the running direction of the rotary paper and rotate synchronously.
It is supported by 2 and 13. A cam shaft 14 is fixedly attached to one frame 12 side and is pierced and supported at the axial center of the removing cylinder 10. The cam shaft 14 is provided with needle cams 15 and thrust bar cams 16 alternately.

On the outer peripheral portion of the extracting cylinder 10, two blades 17a having a length extending over the entire length of the extracting cylinder 10 are provided apart from each other in the rotational direction.
17b are planted, and needles 18 and thrusting rods 19 are alternately provided between the two blades 17a and 17b so as to be capable of projecting and retracting in the radial direction.

The blades 17a and 17b are disposed between one side surface of the spacer 21 and the receiving wall 22 which are fitted in the groove 20 axially provided on the outer peripheral portion of the extraction cylinder 10, and between the other side surface of the spacer 21 and the pushing member 23. It is sandwiched between and and is fixed by pushing the pushing member 22 with a bolt 24.
The tips of the two blades 17a, 17b slightly project from the peripheral surface of the extracting cylinder 10, and the tips are brought into contact with the peripheral surface of the receiving cylinder 11. The needle 18 and the thrust bar 19 are slidably penetrated through the spacer 21.

The needle 18 and the thrust rod 19 are slidably supported on the pull-out barrel 10 by being biased by a spring 25 in the retracting direction. The proximal ends of the needle 18 and the thrust bar 19 are in contact with the cams 15 and 16 provided on the cam shaft 14.

The relationship between the needle 18 and the needle cam 15 is shown in FIG.
As shown in FIG. 5, the blades 17a and 17b project at a position facing the receiving cylinder 11, gradually retract while rotating from this position by about 180 degrees, and then gradually project again. As shown in FIG. 6, the relationship between the push rod 19 and the push rod cam 16 is such that the needle 18 is retracted at the projecting position, and then the needle 18 is gradually projected to project at the retracting position. .

The receiving barrel 11 is provided with a receiving hole 26 into which the needle 18 is inserted when it projects. A suction duct 27 that covers the outer circumference of the extraction cylinder 10 is provided opposite to the position where the needle 18 is retracted and the thrust bar 19 is projected.

In the above embodiment, the blades 17a, 17
A plurality of punched portions by b may be provided in the circumferential direction depending on the diameter of the punching cylinder 10.

In the above-mentioned structure, while the rotary paper 18 being steered passes between the removing cylinder 10 and the receiving cylinder 11, the blades 17a, 1
By 7b, it is cut into a predetermined size in the vertical direction by dropping. At this time, the needle 18 projects and sticks into the punched-out punched piece, and the punched piece moves in the circumferential direction together with the needle 18 as the punching cylinder 10 rotates. When the punching cylinder 10 is rotated 180 degrees from the doppling position, the needle 18 is set in the retracted state, and the thrusting bar 19 is moved so that the punching piece is pushed up by the thrusting bar 19.

Therefore, even when the needle 18 does not come off from the punched piece when the needle 18 is retracted, the punched piece at this position is pushed up by the thrust bar 19 and forcibly separated from the needle 18. The punched piece separated from the needle 18 is sucked and discharged by the suction duct 27.

[0018]

According to the present invention as described above, the punching piece punched by the dropping can be reliably removed from the needle 18 at the suction / discharge portion by the suction duct 27, and therefore the punching cylinder rotates at high speed. In this state, it is possible to favorably dislodge the punched piece and prevent the punched piece from being wound around the punching cylinder during high-speed rotation.

[Brief description of drawings]

FIG. 1 is a front view showing a booklet manufacturing apparatus to which the present invention is applied.

FIG. 2 is a sectional view showing an embodiment of the present invention.

FIG. 3 is a plan view of a main part.

FIG. 4 is an enlarged cross-sectional view of a main part.

FIG. 5 is an explanatory view showing the operation of the needle.

FIG. 6 is an explanatory view showing the operation of the thrust rod.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Booklet manufacturing device, 2 ... Gluing part, 3 ... Collecting part, 4 ...
Vertical folding section, 5 ... Sheet cutter section, 6 ... Pile stacker section, 7, 8 ... Rotating paper, 9 ... Suction device, 10 ... Extracting cylinder, 1
1 ... Receiving cylinder, 12, 13 ... Frame, 14 ... Cam shaft, 1
5 ... Needle cam, 16 ... Push rod cam, 17a, 17b ...
Blade, 18 ... Needle, 19 ... Push rod, 20 ... Groove, 21 ... Spacer, 22 ... Receiving seat, 23 ... Push member, 24 ... Bolt, 2
5 ... Spring, 26 ... Receiving hole, 27 ... Suction duct, A ... Punching cylinder device.

Claims (1)

[Claims] 1. An extraction cylinder 10 and a receiving cylinder 11 are provided so as to face each other so as to rotate in the same direction. Two blades 17a, 17b are provided on the outer peripheral portion of the extraction cylinder 10 so as to be spaced apart in the vertical direction. While planting, the blade 1 is placed between the two blades 17a and 17b.
Removing cylinder 10 when 7a and 17b face receiving cylinder 11
Of the needle 18 projecting from the outer periphery of the needle and gradually retracted as the needle barrel 10 rotates, the needle 1 is inserted between the two blades 17a and 17b.
A pull-out body device, wherein a thrusting rod 19 is provided so as to be able to project and retract so that when 8 is retracted, the thrust rod 19 is retractable.