DE102007019009B4 - stitcher - Google Patents

Abstract

A stapling apparatus with a stock store (07; 09) for continuous stapling wire (04), at least one stapling head (02; 03) and a feed device (06, 08, 16-18) for feeding stapling wire (04) from the stock store (07; for stapling wire (04) to the stapling head (02, 03) and dividing the stapling wire (04) into pieces, wherein a sensor (13) for quantitatively detecting the amount of stitching wire present in the storage memory (07, 09) is arranged, characterized in that the Storing wire storage memory (07; 09) is a coil in that the sensor (13) is a mass sensor integrated in the suspension (1; 12) in the form of a bending beam for detecting the weight of the coil, and in that Display device (14) for displaying the detected weight as a number of staples producible with the detected stitching wire amount as staple products or as a residual length of the stitching wire (04) in the storage memory (07, 09) is arranged.

Description

The The invention relates to a stapling apparatus according to the preamble of the claim 1.

Out EP 1 588 813 B1 For example, a stapler is known which successively breaks up a supply of stitching wire wound on a spool into pieces, forms the pieces into staples and staples printed matter with the staples thus obtained. The wire is guided in the stapler through narrow channels. When the wire supply on a roll is depleted, the last end of the wire is often irregular in shape and tends to hang in the channels, necessitating an interruption in its operation. To avoid this, a warning signal generator is conventionally provided, which provides a warning signal when the amount of wire on the roll falls below a critical minimum amount. A warning buzzer used in practice is based on detecting the wire present on the reel with the aid of an inductive sensor. If the roll becomes empty and no wire is detectable near the sensor, a warning signal is triggered.

One In general, users can not easily do the wire roll see. Even if he could see her, he still could not have her remaining capacity reliable assess because to judge the thickness of the residual wire layer on the roll to be able to should he can also see the core of the roll, and that is only possible if the roll is almost empty, d. H. if the warning buzzer responds anyway. In practice, therefore, a user must be practically always on the occurrence Be prepared for the warning signal.

If during production the warning signal appears, the user has generally a few minutes to the nearly exhausted wire role to replace a new one before it is completely empty. In the for the exchange time required no wire supplied and the products that go through the stapler at this time remain not stapled, or, in the case of a stapler, any product several times made from different supply rolls Staples staples, the number of staples per product is temporarily reduced. Untethered products are generally wastepaper, and depending on quality requirements It may be necessary to stapled even with reduced number of brackets To reject products.

The DE 197 12 862 C2 , the DE 197 14 482 A1 and the DD 287 686 A5 describe staplers in which sensors are provided for monitoring the amount of stitching wire.

The DE 199 27 419 A1 and the DE 1 262 196 A disclose weighing devices for monitoring wire spools.

By the DE 1 564 516 A For example, a display device for a remaining amount of wire is known.

Of the Invention has for its object to provide a stapler, in which the issue of banned or incompletely stapled Can be avoided products from the stapler.

The The object is achieved by the Characteristics of claim 1 solved.

One Advantage of the stapler is that the issue of untyped or incomplete stapled products can be avoided from the stapler, when a user, based on the sensed by the sensor, is still in memory existing amount of stitching wire before the start of a production process decides whether the stitching wire supply is sufficient for the production process and, if not, replace that stock.

at the sensor for detecting the amount of stitching wire is one Mass sensor.

One such mass sensor is for detecting the weight of a supply reel in their suspension integrated in the form of a bending beam.

If the weight of a spool core on which the stitching wire is wound up is known, based on a detected by the sensor weight of coil core and stapling wire thereon the weight of the Estimated wire become.

To belongs to the stapler also a display device for displaying the detected stitching wire amount, which allows a user to judge how many products can still be made with the existing stock.

Especially It is comfortable when the display device itself set up is the detected stitching wire amount as a piece number of with the detected stitching wire amount displayable staples or staple products.

In addition, can a signal generator may be provided to generate a warning signal, if the detected stitching wire quantity falls below a minimum value. So the user can, if necessary, for an immediate exchange of the staple wire stock.

embodiments The invention are illustrated in the drawings and are in Following closer describe.

1 shows a block diagram of a stapling apparatus according to a first embodiment of the invention.

The in 1 The stapler shown comprises a rotatably mounted stapling cylinder 01 , on whose lateral surface two pairs of stapling heads 02 ; 03 are arranged diametrically. The stitching heads 02 ; 03 have each designed as a cutting blade lateral edge for shearing a piece of stitching wire 04 , the stapling heads 02 via a guide channel 06 from a supply roll 07 and the stapling heads 03 via a guide channel 08 from a supply roll 09 is supplied.

The storage tanks 07 ; 09 for stitching wire 04 , in the following supply rolls 07 ; 09 called, are each in a frame 11 ; 12 , for example a suspension 11 ; 12 rotatably and interchangeably stored. In every frame 11 ; 12 is one for the mass of supply rolls 07 respectively. 09 sensitive mass sensor 13 integrated in the form of a bending beam. The mass sensors 13 provide a quantitative measurement signal of the detected mass to a processing and display device 14 , The processing and display device 14 can be part of a control station of a printing machine. It is designed to be separated from that by the sensor 13 recorded mass value in each case a contribution of the frame 11 ; 12 and an empty weight of the supply roll entered via a user interface (not shown) 07 respectively. 09 deduct and thus the weight of wire stock on each supply roll 07 respectively. 09 to obtain. This weight can be displayed directly to a user; Preferably, it is converted into a more easily judged by the user indication such as a residual length of the stitching wire 04 on each roll or the number of parentheses that can be made from this residual length. Such an indication allows a user to conveniently assess whether the wire supply is on the supply rolls 07 ; 09 is sufficient for a planned production process, or if it is appropriate, one or the other of the supply rolls 07 ; 09 before the start of the production process to avoid a roll change during production.

For conveying the stitching wire 04 from the supply rolls 07 ; 09 to the stitching heads 02 ; 03 each serves a motor 16 ; 17 , z. B. an electric motor 16 ; 17 , one between the supply rolls 07 ; 09 and the guide channels 06 ; 08 arranged, the stitching wire 04 clamping roller pair 18 drives. In the presentation of the 1 is in each case an electric motor 16 ; 17 for driving each pair of rollers 18 intended; because the feeding speed of the stitching wire 04 at the stapling heads 02 and 03 is the same, both pairs of rollers can 18 by a same engine 16 ; 17 be driven.

The through the stapling heads 02 ; 03 Cut off pieces of wire are used in the course of rotation of the stapling cylinder 01 from the stitching heads 02 ; 03 taken in known manner to form rolls 19 , in cooperation with the stitching heads 02 ; 03 forming the pieces of wire into staples with which finally products (not shown) are stapled, which form a gap between the stapling cylinder 01 and a striker cylinder 21 perpendicular to the plane of 1 run through.

To the risk of unintentional idling of the supply rolls 07 ; 09 to minimize, according to a further developed embodiment, two comparators 22 be provided, which are the measurement signals of the mass sensors 13 Compare with a predetermined or adjustable by a user reference signal and an acoustic or optical signal generator 23 to trigger a warning signal when one of the comparators 22 detects that the amount of remaining wire on its assigned supply roll 07 or 09 falls below a value corresponding to the reference signal.

Of the Stapler is preferably in a folder of a web-fed rotary printing press arranged.

01

stitching cylinder

02

stapling head

03

stapling head

04

stitching wire

05

06

guide channel

07

Storage reservoir; supply roll

08

guide channel

09

Storage reservoir; supply roll

10

11

Frame; suspension

12

Frame; suspension

13

Sensor; Mass sensor;

14

Evaluation / display device; processing device

15

16

Engine; electric motor

17

Engine; electric motor

18

roller pair

19

forming roll

20

21

Closing plate cylinder

22

comparator

23

signaler

Claims (3)

Stapler with a storage memory ( 07 ; 09 ) for continuous stitching wire ( 04 ), at least one stapling head ( 02 ; 03 ) and a feeder ( 06 . 08 . 16 - 18 ) for feeding stitching wire ( 04 ) from the storage store ( 07 ; 09 ) for stitching wire ( 04 ) to the stapling head ( 02 ; 03 ) and cutting the stapling wire ( 04 ) into pieces, with a sensor ( 13 ) for the quantitative determination of the in the storage memory ( 07 ; 09 ) existing amount of stitching wire is arranged, characterized in that the storage memory ( 07 ; 09 ) for stitching wire ( 04 ) a coil is that the sensor ( 13 ) is a mass sensor for detecting the weight of the coil in its suspension ( 1 ; 12 ) is integrated in the form of a bending beam, and that a display device ( 14 ) for displaying the detected weight as a number of staples producible with the detected staple wire amount as staple products or as the remaining length of the stapling wire ( 04 ) in the memory ( 07 ; 09 ) is arranged. Stapler according to claim 1, characterized in that a signal generator ( 23 ) is arranged to generate a warning signal that outputs a warning signal when the detected stitching wire amount falls below a minimum value. Stapler according to claim 1, characterized that an evaluation is integrated in the bending beam.