JPH07187481A - Gathering machine for sheet paper after printing - Google Patents

Abstract

PURPOSE: To surely exhibit a function of high degree even in processing for printed sheets, in particular in a wide format area, in a collating apparatus provided with a device for initial-accelerating the printed sheets prior to gripping of the sheets by a collective conveyer. CONSTITUTION: A device for accelerating a printed sheet 1 comprises acceleration rollers 10a, 10b which are synchronized with a carrying tool 5 of a collective conveyer 6 for gripping the printed sheet 1 to be turned toward a mounting roller 11 within a pedestal 4. The rollers 10a, 10b are located to transfer the printed sheet 1 directly from a gripping claw 7 to the rollers 10a, 10b within a moving face of the gripping claw 7 of an extraction cylinder 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is directed to a plurality of supply stations arranged in a line, a collecting passage, and a plurality of printed sheets on the collecting passage in front of itself while being directed to a side guide. A collective carrier consisting of an endless carrier chain with a plurality of carrying devices to be pushed to and a plurality of pedestals arranged between the supply station and the collecting passage, and then a gripper arranged immediately above it.・ By the carrying tool, the cradle is used to carry the printed sheets, which are separated by the drawer cylinder, one by one, and is carried away by the carrying tool, and to be conveyed further forward. The present invention relates to a collator for post-printing sheets, which has a device for accelerating before grasping.

[0002]

2. Description of the Related Art In a collating machine of an old structure type, after printing, a sheet is printed one by one at each feeding station and placed on a mounting table, from a stationary state, to a carrying tool of a collective conveying machine. Is accelerated to the transport speed of the transport machine. This is, as is well known, that the impact that occurs at that time leads to jumping and bending of the paper sheet after printing,
Exceeding a certain speed will result in functional disruption.

To address this problem that occurs at high repetitive motion numbers, an initial acceleration that brings a printed sheet placed on a platform to an initial velocity prior to receipt by the carrier. The device is installed.

One known device for initial acceleration is described in West German Patent Application Publication No. 14 86 744. There, it is done to move the platform back and forth as a unit, which means that after printing the paper sheet is no longer at rest before being received by the carrying device of the transport device,
This is done to achieve what only needs to be accelerated from the initial speed of the platform to the transport speed of the transport device.

This device for initial acceleration requires a relatively large structural outlay to move the platform, and further because of the reciprocating mass, to further improve performance. Cannot be used for.

A further post-printing sheet accelerator is known from West German patent application publication 29 37 611,
This one uses a rotationally driven accelerating mechanism that is pressed against a loading table, and the accelerating mechanism grasps the paper sheet after printing placed on the table and is a friction type member. Acceleration in the transport direction depending on the combination.

In such an apparatus, during the acceleration phase, the West German patent publication 31 discloses in order to prevent rotation during the receipt of a relatively wide printed sheet by the carrying device.
In the 26 808, it is said that the acceleration mechanism is formed in a rod shape and is arranged in parallel with the mounting table.

[0008]

The devices with the acceleration mechanism described above result from the expense of a relatively wide range of constructions, and because of the space they occupy, they need to be installed in all machines. It cannot be used for co-operation. Furthermore, these accelerators require a high time outlay in the adjustment and rework depending on the thickness of the printed sheet. Finally, it is not possible to eliminate the generation of traces on the paper sheet after printing when the accelerating mechanism presses against the mounting table.

The object of the invention is a gathering machine of the above-mentioned type which is provided with a device for the initial acceleration of the printed sheet before the gripping by the collective transporter, which is known from the prior art. It is an object of the present invention to provide a collator that does not have the drawbacks of the initial accelerator and that exhibits a high degree of functional certainty, especially in the processing of printed sheets in a wide format area.

[0010]

According to the present invention, an object of the present invention is to rotatably drive a device for accelerating a printed sheet and synchronize it with a carrying device of a collective transporter for grasping the printed sheet. Then, it consists of accelerating elements that press against the loading roller in the cradle, and these accelerating elements move the gripper of the drawer cylinder so that the paper sheet is delivered directly from the gripper to the accelerator after printing. Achieved by a collator for printed sheets, which is characterized by being located in the plane.

[0011]

By virtue of the fact that the accelerating element is arranged in the gripper movement surface of the drawer cylinder, the printed sheet is directly received from the gripper by the accelerating element and held in place on the cradle. After printing, there is no uncontrolled movement of the leaf, which results in a substantially higher degree of functional certainty. Moreover, the arrangement of the acceleration elements according to the invention also allows processing of the smallest formats.

By using the mounting roller in the pedestal, that is, the mounting roller to which the accelerating element is operatively coupled, the frictional force at the initial acceleration is reduced, and the tearing of the paper sheet after printing is caused. And messy deformation is less likely to occur. Furthermore, tearing due to the accelerating element being formed as a twin-shaped element is prevented, which means that during the initial acceleration of the printed sheet in the wide format area,
It is particularly advantageous.

[0013]

Embodiments of the present invention will now be described with reference to the drawings.

The supply station for supplying the printed paper sheets 1 in the collator has a drawer cylinder 2 between the printed paper sheet magazine 3 and the receiving table 4. Cradle 4
Has an elongated opening 4a on one side.
In a, the carrying tool 5 of the collective carrier 6 having a collecting passage 6a with an elongated opening 6b on one side is
After printing, the paper sheet 1 placed on the cradle 4 is moved in order to remove it.

The drawer cylinder 2 has two cylinder disks 2a and 2a.
Between b there is a controlled gripper mechanism 7.

The collecting passage 6a of the collecting conveyor 6 and the receiving table 4 exist on the side frame 8 of the gathering machine with a certain difference in height between them. The cradle 4 is bounded by lateral guides 9.

According to this embodiment, the supply station is equipped with a device for initially accelerating the printed paper sheet 1 placed on the receiving table 4 before the grasping by the carrying tool 5. The accelerating device comprises an accelerating roller 10 which is driven to rotate permanently, the accelerating roller 10 being located between the two cylinder discs 2a and 2b and in the immediate vicinity of the lateral guide 9. And is operatively connected to the mounting roller 11 in the receiving table 4. Here, the mounting roller 11 may be supported in a pendulum manner.

The loading roller 11 penetrates the pedestal 4 and its peripheral surface slightly projects beyond the level of the pedestal 4. In order to grasp the paper sheet 1 after printing, the acceleration roller 1
0 can be swiveled in the direction towards the loading roller 11 and in the opposite direction, in synchronism with the carrying device 5 of the collective transport machine 6 passing therethrough.

In particular, in order to prevent tearing during acceleration of the wide-format printed paper sheet 1, the acceleration roller 10 is used.
Of the two spaced rollers 10a and 1
0b, which may be rollers 10a, 10b
May optionally be pendulum supported so that adaptation to the swivel angle of the acceleration roller 10 is made.
Furthermore, a second accelerating element may be arranged at a certain distance behind the accelerating element 10 in the direction of acceleration.

The acceleration roller 10 includes a side frame 8 and a side guide 9.
Is relatively non-rotatable on a drive shaft 14 passing through the drive shaft 14. The drive shaft 14 is permanently driven to rotate by a bevel gear 15 from a drive machine (not shown). The bevel gear 15 and the drive shaft 14 are supported in one U-shaped structural part 16 which is pivotable about a shaft 17 supported in the frame of the machine. Has become. The shaft 17 rotatably accommodates a swivel plate 18 with one stop 19, on which the U-shaped structural part 16 is supported with a piece 20 welded thereto. Between the strip 20 and one overhang 21 on the swivel plate 18 is a compression spring 22 as a connecting member between the swivel plate 18 and the U-shaped structural part 16.

By means of the compression spring 22, the acceleration roller 10
Is maintained on the post-printing sheet 1 supported on the placing roller 11. This allows different paper thicknesses to be compensated.

The drive for the turning of the acceleration roller 10 toward and away from the accelerating roller 10 is performed by the cam plate 25 on the drive shaft 23 that is being driven to rotate, on which the control roller of the turning plate 18 is driven. 24 travels, and the swing plate 18 is maintained on the cam plate 25 by the tension spring 26.

For the slip-free carrying of the printed sheet and its optimum adaptation to the printed sheet, the acceleration roller 10 is provided with a coating made of a resilient, non-slip material. . There may be provided a lifting prevention device that acts on a front region of the post-printing paper sheet 1 in the accelerating direction of the post-printing member 2 and holds it on the pedestal 4 at a position separated from the drawer cylinder 2.

In one advantageous embodiment, the operative connection to the post-printed sheet until the leading edge of the post-printed sheet 1 is received in contact with a pile of already collated post-printed sheets. The acceleration roller 10 is controlled so that

Furthermore, the accelerating roller 10 may, as shown in FIG. 3, be made up of two segments 27 arranged on a common axis with a certain mutual spacing, which segments are advantageous. As a result, each of them is pressed against one mounting roller 28.

[0026]

As described above, according to the present invention, the device for accelerating the printed paper sheet is rotationally driven, and is synchronized with the carrying tool of the collective transporter for grasping the printed paper sheet. It consists of an accelerating element that presses against a loading roller in the table, the accelerating element being located in the gripper movement surface of the drawer cylinder so that after printing the paper sheet is delivered directly from the gripper to the accelerator. By doing so, there is an effect that a high degree of certainty of the function is shown even in the processing of the printed sheet in the wide format area.

[Brief description of drawings]

1 is a side view of a feeding station of a collator equipped with an accelerator according to the invention.

FIG. 2 is a front view of a supply station.

FIG. 3 shows a modification of the diagram of the accelerator.

[Explanation of symbols]

 1 Printed paper sheet 2 Drawer cylinders 2a, 2b Cylinder disk 3 Post-printed paper sheet magazine 4 Receiving stand 4a One long opening 5 Carrying tool 6 Collecting conveyor 6a Collecting passage 6b One long opening 7 Pawl mechanism 8 Side frame 9 Side guide 10, 10a, 10b Accelerating roller 11 Placement roller 14 Drive shaft 15 Bevel gear 16 U-shaped structure part 17 Shaft 18 Swiveling plate 19 Stopper 20 Small piece 21 Overhanging part 22 Compression spring 23 Drive shaft 24 Control Roller 25 Cam Plate 26 Tension Spring 27 Segment 28 Mounting Roller

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Joachim Schröder Germany Day-27249 Mellinghausen Orendorf 3

Claims (13)

[Claims] 1. A plurality of supply stations arranged in a line, a collecting passage, and a plurality of carrying devices for pushing a plurality of printed sheets on the collecting passage toward the front side while hitting the side guides. And a plurality of pedestals arranged between the supply station and the collecting passage, and then by a gripper / drawer cylinder arranged immediately above the collecting carrier. The carrying tool grasps a receiving tray on which the printed paper sheets separated by one sheet are wiped off by the carrying tool and transported further, and the printed paper sheet placed on the receiving board by the carrying tool. In a collator for a post-printing sheet, which has a device for accelerating before, the device for accelerating the post-printing sheet (1) is rotationally driven to produce a post-printing sheet (1). The above-mentioned transportation for grasping In synchronism with the carrying tool (5) of the machine (6), which consists of an acceleration element (10, 27) that is pressed against the loading rollers (11, 28) in the cradle (4), The accelerating element (10, 27) is a gripper of the drawer cylinder (2) so that the paper sheet (1) after printing is directly delivered from the gripper (7) to the accelerating device (10, 11, 27, 28). It is located in the movement plane of (7),
A collator for printed sheets. 2. The collator according to claim 1, wherein the acceleration element (10, 27) is located between the discs (2a, 2b) of the drawer cylinder (2). 3. The collator according to claim 1, wherein the accelerating element is a roller (10) which can be swiveled in a direction toward the mounting roller (11). 4. The collator according to claim 3, wherein the accelerating element (10) is composed of two rollers (10a, 10b) arranged on a common axis with a fixed mutual spacing. . 5. At the rear of the acceleration element (10, 27) as seen in the direction of acceleration, there is one corresponding loading roller for accelerating the post-printed sheet at a certain distance. The collator according to claim 1, wherein a second accelerating element is arranged. 6. The collator according to claim 1, wherein a peripheral surface of the placing roller (11, 28) slightly projects beyond the level of the pedestal (4). . 7. The acceleration roller (10) comprises a spring (2).
The collator according to any one of claims 1 to 6, which is held in a state of hitting the paper sheet (1) after printing by the force of 2). 8. The collator according to claim 1, wherein the acceleration element (10, 27) is provided with a coating made of a resilient and non-slip material. 9. The mounting roller (11) according to claim 1, wherein the mounting roller (11) is supported in a pendulum manner so that the swivel angle of the acceleration roller (10) is adapted accordingly. Collating machine described in paragraph. 10. The accelerating element is made up of two segments (27) arranged on a common axis with a certain mutual spacing, which segments are advantageously in each case for each of them. 10. The collator according to claim 1, wherein the collator is pressed against one loading roller (28). 11. An operative connection to the printed sheet (1) is maintained until the leading edge of the printed sheet contacts and is received by the pile of already collated printed sheets. Collator according to any one of claims 1 to 10, wherein the acceleration element (10, 27) is controlled. 12. A float which acts on a region in front of the post-printing paper sheet as viewed in the direction of acceleration of the post-printing member, outside the drawer cylinder (2), and holds it on the pedestal (4). The collator according to any one of claims 1 to 11, further comprising a preventive tool. 13. The mounting rollers (11, 28) are spring-supported and are arranged at a fixed interval.
The collator according to claim 1, wherein the collator is made of two rollers.