Käseschachtelmaschinen - BSZ-4 (Vordergrund) und MAM (Hintergrund)
Cheese Box Machines

Cheese Box Machines

Overview

A manufacturing line for drawn cardboard boxes for soft cheese is generally composed of two machines linked together via transports:

Box Drawing Machine (BSZ-4)

Box top and bottom part are made by forming a flat cardboard disk. Both box parts are produced simultaneously on the machine. All functional units are available twice. The box parts are passed onto two separate conveyor belts.

Assembly Machine (MAM)

A cardboard strip is glued ring-shaped into the bottom box, and thereafter the two box parts are put together. The box’s top and bottom are supplied via separate conveyor belts. The cardboard strips are directly processed from the coil.

For wound cheese boxes, a ring winder and a lid forming machine are used - similar to the production of ice cream lids. On the ring winder, a ring is wound out of a prefabricated blank in an overlapped manner (convolute); and its ends are glued together. On the lid forming machine the upper edge of the sleeve is rolled in and a cardboard disk is inserted.

Layout

A – box drawing machine BSZ-4/S with control cabinet
B – off-transport belt - base components
C – off-transport belt - lid components
D – collar unreeler
E – MAM assembling machine with control cabinet
F – off-transport belt

BSZ-4 Box Drawing Machine

fully automatic processing machine for the manufacturing of deep drawn box parts made of drawable cardboard

Processes

Both the cheese box base and lid components are produced by the box drawing machine.

The base and lid components are processed at the same time. The components are made from cardboard discs. The feeding and processing of both components are carried out in a parallel process.

The discs are manually placed into the stacking magazine. From there, they are separated with a feeder and two draw-off rollers to arrive at the drawing tool via the disc transport.

The disc is transported via an airstream to the drawing bush and correctly positioned by mechanical stops. The drawing punch pushes the disks together with the embossing matrix through the drawing bush. At the same time, the cutting ring cuts the edges off the drawn part (optional).

The base and the lid components are then suctioned off from the drawing tool and arrive at the calibration bushes via the feed channel. The waste ring is separated and suctioned off individuallyThe drawing tools for the base and lid components possess the same base structure.

The components are positioned at the calibration bush and then fed through the calibration bush with a tappet. The component finished previously is pushed out from the bush through this and falls onto the off-transport belt below.

The completed base and lid components are taken to the MAM assembling machine.

Design and Function

  • solid welded frame
  • frequency-controlled main drive (adjustable machine speed)
  • eccentric unit with hardened cams and cam discs
  • progressive central lubrication
  • dual stacking magazine for pre-punched cardboard discs
  • calibrating device
  • vacuum pump
  • safety cover with mechanical or magnetic guard locking

MAM Box Assembly Machine

fully automatic indexed processing machine for the manufacturing of multi-component cheese boxes made from cardboard

Processes

First, collars are placed into the base components in the assembling machineThe base and lid components are then assembled. The complete boxes are passed on to the next machine using a guide frame.

The collars (strips) are cut to the required length after the unreeling. Two vent holes are then punched into the collar. The collar is then cut to the correct height and transported to the winding head.

The base components are fed from the BSZ machine to the assembling machine via separate off-transport belts. Light barriers (MIN and MAX) regulate the jam control at the belts and the infeed block on the assembling machine.

The base components are firstly separated and pushed into the turret table. The base components are glued on the inner surface at the following gluing station. At the next station, the now ready collars are placed into the base components using the winding head. They are pressed in at the next station.

In the assembly unit, the base component with collar is pushed out and through a clamping cage. The springs of the clamping cage extend into the prepared base component and serve as an insertion aid for the base component with collar. Once the box is assembled, the clamping cage retracts out of the lid component again. The lid components and the completed box are suctioned to the ancillary turret during this process.

At the next station, the assembled cheese boxes fall onto the box off-transport belt and arrive at the ejection channel after being counted.

In the adjacent calibration bush (optional), the boxes are formed according to the final outer diameter. The following box component pushes the previous piece through the calibration bush onto the guide rod frame.

Design and Function

  • solid welded frame
  • frequency-controlled main drive (variable machine speed)
  • 8-station revolver with indexing gear box
  • base and lid component feeding station
  • bottom gluing device for the collar (PVAC)
  • collar board unreeling
  • collar strip cutter
  • device for precise trimming of the strip length

    • fine adjustment during production run possible

  • puncher for two air holes in the collar
  • collar feeding device with adjustable servo drive
  • collar winding and inserting station
  • assembling station for bottom and top part
  • ejection station
  • exit channel for ready assembled boxes
  • central lubrication system
  • safety cover with mechanical or magnetic guard locking

Technical Data

BOX DRAWING MACHINE BSZ-4BOX ASSEMBLY MACHINE MAM
output200 boxes/ min.100 boxes/ min.
performance100 cycles / min.
diameter (drawn part)Ø 110 ± 2 mm
diameter (disc)max. Ø 175 mm-
box height10 ... 30 mm (drawn part)20 ... 65 mm
material thicknessmax. 0.7 mm

max. 0.8 mm (bottom/lid)

max. 0.65 mm (body)

material (lid)

standard drawing board

400 ... 500 g/m2

material (bottom)

standard drawing board

400 ... 500 g/m2

material (body)

-

standard drawing board

450 g/m2

mass

2.800 kg ( main machine)

400 kg (control cabinet)

150 kg (off-transport belts)

1.750 kg (main machine)

400 kg (control cabinet)

150 kg (infeed belts)