DE2017471A1 - - Google Patents

Description

JAGENBERG-WERKE AG Düsseldorf, April 9, 197 ©

DUSSELDORF Device for erecting the bottom parts on folding box

cut

The invention relates to a device in folder gluing machines to straighten the in the direction of movement Eodenteile lying in front or dgjL. on folding box blanks with the help of one in the movement path of the Cuts protruding lever.

In the production of so-called folding bottom boxes, i.e. folding boxes with bottom flaps that automatically form the bottom when the box cross-section is opened, are in the folder gluer special devices are required to erect and fold the bottom parts of the folding boxes. It is known, Use hooks or levers to straighten the floor parts at the front in the direction of movement, which are inserted into the Movement level of the folding boxes from above or gate. from underneath protrude ·. '

The movement control of the moving hooks up and down must be done in time with the operation so that the folding hook fall into the gap between two blanks and be able to grasp under the front edge of the floor parts Due to the different throughput speeds and variable cut sizes requires an inevitable and cyclical movement control of the folding hooks high drive and control engineering effort, the moreover still through the necessary adjustability of the device to different types and sizes of cut as well as increased to 'different working speeds will"

“AD OKiGINAL

109844/0094

-2-. '■■■ - ■.

When using the less expensive lever '-has' shown that this from PaltschaclTfcelzusehnitten from heavy Cardboard or the like »is pushed back without the to be served To raise acceptance part. '

The invention is based on the object of the less complex righting lever against premature without great effort Dodge to secure. . - * .., ■., < ,, ..,.

This object is achieved in that the levers projecting into the path of movement of the blanks a locking mechanism that can be released by the front edge of the blank «This lever, locked in its operative position, is a through the front edge of the blank assigned displaceable and the locking releasing stop, which is arranged at the free end of the lever that can be moved out of the path of movement of the blanks. -,

The advantages achieved by the invention are in particular that folding boxes of different types of cardboard can be processed with the locked lever. While the unlocked lever previously only guaranteed trouble-free operation for light to medium-weight cartons, the machine speed had to be reduced for heavy types of cardboard, as the stiff box blanks pushed the unlocked lever into its inoperative position at an early stage. In the current version, the lever can only evade when the front edge of the blank has reached the stop and. it is depressed by its wide movement, that is, the lever "" is overrun in its full usable length and in its effective position before the way to the completion of the initiated Yaltvorgansas is cleared. Since the necessary force ζλχαί liiederpressing the stop is very low.

109B447009A

light and heavy types of cardboard can be processed without any problems.

Another advantage is that the device is not connected to any Work cycle is bound and therefore no adjustment work is required when changing the format.

The following is the subject of the invention with reference to the "Exemplary embodiment shown in the drawing is described.

1 to. 4- show the individual movement phases of the lever.

The folding box blank 1, kosuaend from a loading station, not shown, is of the belts. 2 and 5 out against the lever 4. While the part of the folding box blank 1 guided between the belts 2 and 3 continues to run in the same plane of movement, the sealing flap 1 'is lifted by the rising surface 5 of the lever 4 and transported against the stop 6 of the pawl 7 in the further course of the forward movement. The force generated by the contact of the front edge of the Bodenvers ohlußklappe 1 * with the stop 6 (Fig. 2) moves the pawl 7 around the pivot point 8 arranged in the lever 4 under tension of the compression spring 9, the pawl 7 from the actionbex * calibration of the fixed latch stop 14 is swiveled out · After the stop 6 of the latch 7 has ^{been displaced by the front edge of the bottom closure flap I 1} , this front edge is pushed onto the hold-down device Io (Pig «3)» while the kink 1 "of the folding box blank is on the surface 5 of the lever 4. The straight forward movement of the folding box blank 1 causes the kink 1 ″ to move the lever 4 around the pivot point 11 out of the path of movement in a known manner. Hold-down through free, and through the

109844/0094

Lever 4- initiated folding process of the bottom flap 1 'can be completed by the folding box cutout 1, through the belts 2 and 3 we lter is transported. The bottom * ^{closing flap I 1} , which has been raised by the lever 4 and brought into its preliminary end position by the hold-down device Io, is now guided by bands and guide strips (not shown) in the position of a glue application device that has just been assumed.

If the folding box blank 1 has left the area of the lever 4 with its edge located at the rear in the direction of movement, this lever Λ is pivoted back into the gap between two folding box blanks by the tension spring 12 around the pivot point 11, the stop 13 determining the position of the lever and the spring-loaded latch γ- fixes the lever 4 · The device has reached the starting position again for the next folding box.

8AD ORIGINAL

Claims (1)

Patent claims: (1.J device Xn ! folding boxes ebemascjhiaem for opening the bottom parts lying in front in the direction of movement or the like. Jpaltschachtelschnitts sit with the help of erecting levers, characterized} that the lever (4) protruding into the path of movement of the blanks with a through the front edge the blank (1) has a detachable lock (7 »9» 14) · 2 · Device according to claim 1, characterized in that the in its operative position locked lever (4) one by the front edge of the blank (1) displaceable and the Lock (7, 9, 14) is assigned to releasing stop (6) 3. Device according to claims 1 and 2, characterized in that the _{stop (6) releasing the lock (7, 9 t} ⁱ⁴ ) is arranged at the free end of the lever (4-) which can be moved out of the movement of the blanks (1). Bo / La «