FR2671060A1 - STACKING UNIT WITH SAMPLING FROM A PILE OF BLOCK MOLDS OR RACKS, AND TIPPING THEREOF. - Google Patents

Abstract

The invention describes a stacking machine comprising a stack pick-up device for picking up a block mold or a rack from a stack, a transport device (66) for transporting the block mold picked up from the stack, a handling device. inversion (4) for inverting the block mold, and a stacking device for stacking the inverted block mold on a stack, which machine is characterized in that the inverting device (4) receives the block mold from the device for transport (66) and returns it, reverses, to the transport device (66).

Description

1 -

  The present invention relates to a stacking unit comprising two stacking machines.

  DE-PS-32 47 819 already discloses an inverting apparatus with individual trays, in which two stacking machines of substantially the same kind

  are connected to each other by means of a reversing unit

  Stacking units of this type have large dis-

  tances of journey and a complicated order They do not allow a simple and space-saving transfer of

  block molds or trays transported between the two machines

  Stacking nes On the contrary, each stacking machine is born

  stops its own motor and its own control.

  A stacking unit of this type is known, comprising

  both an overturning device, for example by the do-

  cument DE-OS-28 53 433, in which a stack of screens of

  ripening to reverse is pushed and lowered in the mat-

  stacking china The entire stack of racks is

  lifted, in successive stages, each from a rack height, the upper maturing rack being guided each time over a reversal distance with a curved path and, therefore, is overturned by 1800. Such an arrangement a, d on the one hand, the disadvantage that all of

  the stack of racks must be lifted to operate the ma-

  china stacking, which requires an expensive and high-performance lifting device On the other hand, the tilting mechanism in the shape of a curved path is subjected to a high friction, so that the guide rails, the racks and the drive elements are subject to a

  heavy wear In addition, the operation of the

  pounding of this type is linked to a certain vibration, for example cheese products located on the racks, which

  is not good for sensitive storage and for handling

of these products.

  Also known, from document DE-PS-32 22 058, is an inversion device with individual racks, in which the reversing device is guided so that it can be moved in height and is connected to a mechanism.

  This type of overturning device works

  technically perfect, but it cannot be used with a stacking device and

  because of its small size

  inherent The separate arrangement of the stacking machine and the inversion machine has the disadvantage that the entire installation has a large footprint, due to the travel distances to be arranged between the

  machines In addition, the operation is long and expensive.

  The reversing apparatus with individual screens known from document DE-PS-32 47 819 is provided with a

  centered, between a device for collecting

  and a stacking device This arrangement is also

  bulky, time consuming and expensive.

  Finally, we already know from document DE-PS-23 20

  311, a device for turning over a stack of sheets to be

  pour provided with cheese molds, in which the whole

  ble to overturn, located on a cart, must be lifted

  to be returned Therefore, this arrangement requires

  site an additional lifting device in the area of the overturning device, which complicates the mechanism of

  overturning already complicated in itself.

  The object of the present invention is therefore to achieve

  ser a stacking unit comprising a reinforcement device

  installment, which can be built in a compact way

  te and with a small footprint, which works with a

  short and economical work cycle.

  The bift of the present invention is also to achieve

  ser a stacking unit comprising two stacking machines

  ge, which allows a simple and space-saving transfer of

  block molds between stacking machines.

  This problem is solved according to the invention thanks to a stacking unit comprising two stacking machines which are arranged to exchange products or means of production, in particular block molds or racks. In the stacking unit according to the invention, the two stacking machines are interconnected in a simple manner and without the insertion of a reversing device

  or the like, so that a distance from

  minimum course is created In addition, the two employment machines

  pounding are controlled synchronously, so

  that the training cost or the order cost is minimal

  wrong. It is preferable that stacking machines

  are coupled on the control side and operate in a ma-

  synchronous With this arrangement, the stacking machines can be operated jointly, so

  only one command is required.

  It is preferable to couple the stacking machines

  mechanically aged and provide for a common work cycle.

  In this way, a simple mechanical coupling is obtained

  which allows simple construction of the stacking unit.

  Electric power consumption is also reduced

at least.

  It is also preferable that the stacking machines are electrically coupled and have the same cycle

  In this way, an electrical control

  joint of the two stacking machines is possible, which

  minimizes the cost of electrical control.

  It is preferable that the stacking unit has a transport device for transporting a block mold or a rack from one stacking machine to another. In this way, a direct exchange of the block molds or

  trays located in the stacking machines is possible.

  It is preferable that the stacking unit has a transport device for transferring the contents of a block mold or a rack from a 4-stacking machine - the other With this transport device, only the contents

  a block mold is moved between the two stacking machines, while each block mold proper remains in the stacking machine associated therewith This makes it possible to reduce the weight of the product to be transported.

  It is also preferable that the transfer device

  port has a mobile receiving device, which is used to receive, hold and pour the contents of the mold

  blocks With a receiving device of this type, a

  simple placement of the product to be transported along a transport path is possible, and it is the same receiving device which is used to receive, maintain and

  to pour the product to be transported.

  It is preferable that the transport device

  has rails that extend between the machines

  pounding and on which the receiving device is guided

  With the rail system, there is a simple and compact type of travel distance, along which the receiving system can be moved forward and back

back.

  It is preferable that the stacking machines are arranged parallel to each other and that the rails

  connect the two upper areas of the stacking machine

  ge.-The parallel arrangement of the stacking machines allows to obtain a reduced spacing of the stacking machines, while the assembly of the upper areas of the machine

  The advantage of stacking molds is that individual block molds

  already blocked in the upper area of the stacking machine can be emptied or filled directly, without

  additional travel distance.

  It is preferable that the receiving device has suction devices or

  gripping carried out in a corresponding manner, which serves

  wind to receive the contents of the block mold For the reception

  tion of the contents of the block mold, it is recommended to use

  - Read suction devices of this type which only suck the product to be transported located in the block molds, so that the product to be transported adheres to the walls of the suction device. In this way, the product to be transported is transported from one stacking machine to another without changing shape and structure, and it is poured, into said stacking machine, into a mold

  blocks corresponding to the block mold or empty rack.

  The method according to the invention, for transferring a block mold from a first stacking machine to a second stacking machine provides that the two stacking machines, in a synchronous working cycle, approach and take from the stack each time a block mold or a rack and keep them available in their upper zone, the transport device receives the contents

  of a block mold kept ready, or a rack, the trans-

  door to the other block mold or rack and pour it out

  in this or in this one thus obtains a pro-

  assigned for the transfer of block molds, which transfers the

  content of block molds with a minimum number of operations

  while ensuring a synchronous work cycle

  For example, the first stacking machine can be used

  set for production racks while the second stacking machine is used for handling storage racks With the method according to the invention, defined production racks are unloaded, and their content is

  transferred to production racks previously

  dice which are then stacked and stored.

  It is preferable that filled block molds are brought into one of the stacking machines and that

  empty trays are fed to the other stacking machine

  ge With this process, a simple and economical exchange is obtained.

  mique between the production device and the storage device, the production device not being hampered by

  the collection and subsequent storage of certain contents

6- nude block molds.

  It is preferable that the two stacking machines bring the two corresponding block molds and the racks synchronously and in a transfer position located in the upper part of the machines, exchange the contents of the block molds and racks and transport them further In this way, the two machines

  stacking function to a large extent

  synchronously, so that, for example, the levy

  of the stack, provision and stacking is done

  kill synchronously in the two stacking machines.

  It is preferable that products from a production means of one of the stacking machines be transferred

  in the mold or in the tray of another means of production

  other stacking machine This allows transfer

  rer any product, placed on racks, in block molds or storage boxes, to others

production methods.

  It is preferable that the inverting device has a clamping device for enclosing the block mold to be inverted with an empty block mold which awaits in the inverting device. In this way, an assembly to be inverted, which can be inverted in a compactly, is blocked before overturning the block molds The respectively overturned block mold serves as

  empty block mold for the following inversion operation

boast.

  It is also preferable that the return device

  pouring presents a rotation device to reverse

  from 1800 the clamping device and the block molds

  res in it The rotation device causes the actual inversion operation and is produced in such a way that it rotates the clamping device with the block molds clamped in it, the block molds thus remaining blocked in the clamping device, the clamping device being housed in the clamping device

  rotation, and the rotation device being connected to the stacking machine Consequently, the setting up of the different function groups is simple to carry out.5 It is also preferable that the rotation device

  tion and the clamping device are actuated by means

  of two shafts concentrically mounted This ac-

  simple and space-saving operation allows the reversing device to be actuated from one side only, which considerably simplifies the construction and installation of the

  rotation device in the stacking machine.

  It is also preferable that the clamping device

  ge has two grapples that can move in a

  contrary, which serve to center and tighten the

  two block molds Since the rotation device

  tion supposes two block molds tightened in a centered way, it is appropriate to associate the tightening with a centering This is done simply by means of two grapples which can move in a contrary movement, which fill the

two functions.

  It is also preferable that the two grabs pre-

  feel racks which engage by means of a common pinion, the pinion being coupled to the control of the

  clamping device Such a pinion / rack-and-pinion control

  lères is particularly suitable for op-

  installed racks and precise synchronization of the

  upper grapple and lower grapple.

  It is also preferable that the transfer device

  port presents a trolley guided on rails, which is used to receive and unload the block mold.

  only need a certain degree of freedom of movement

  This is why it can be guided on rails.

  The carriage preferably has several wheels which act as support on the rails, the wheels guiding the

  carriage in an assured manner Such an assured guide is eff-

  8 - performs, for example, by means of three wheels which carry

  on a rail, which allow longitudinal and em-

  catch the cart leaving the rails.

  It is also preferable that the transfer device

  port has a drive to move the

  carriage, which engages in a guide provided in the carriage.

  Such a drive device is much more economical

  cause me to realize that a clean engine fitted on the

  riot The drive device can be conveniently operated by a remote motor, but is able to transport the truck exactly to

  the desired receiving or dumping position.

  The drive device is made, preferably

  rence, so that it has a crank which is fixed in rotation on a control shaft and has a

  cam which slides in the guide In this way, the

  rotary drive of the control motor for the device

  can be easily transformed into one

  linear movement for the carriage The guide allows a sliding grip of the cam, so that by turning the crank of 1800, the carriage is transported from the receiving position of the block molds to the discharging position

  scheduled for the overturning operation, and then

  spill proper, for the emptying operation

  pounding The crank allows a smooth travel stroke

  ple The carriage can come into its final position

flexible and precise.

  It is preferable that the transport device

  has a lifting pawl which is used to raise and lower

  tighten the rails and the drive device.

  tif dceiftage is used to release the block mold from the battery removal device (lifting pawl), so that it

  can slide freely on the rails In addition, the device

  lifting tif has the role of freeing the assembly to be

  ser, formed from the filled block mold and the vi block mold

  9 - from, by lowering the rails, so that it can be

  poured freely The lifting device therefore allows both a simple configuration battery removal device that a simple configuration5 reversing device, that is to say without lifting device.

  It is preferable that the stack take-off device has a lifting pawl which is made so that it grips only block molds which are situated at the highest point of the stack. A lifting pawl of this type allows only grab the block mold intended for the next inversion operation and transport it upwards This removes the lifting command for the entire stack, used and known in

  State of the art The gripping of the block mold

  is easy to carry out by means of a lifting pawl specially provided for this purpose, a simple chain drive being sufficient to drive the pawl

lifting.

  The lifting pawl is preferably made so that it has a slide fixed to the pawl, the contour of which is adapted to bear against the

  next upper block mold, the slide being pre-

  droops in such a way that it protrudes when

  that there is no support and the pawl engages in the mold

  the block to be lifted Such a device makes it possible to determine

  ner the position of the upper block mold in a simple way to realize from a technical point of view Indeed, it is characterized in that no additional block mold is placed above it. This can be used for the construction of a specific slide which retains the pawl when it rests against a block mold located

  above and protrudes the ratchet, in a cores-

  laying, when it has no support.

  The method of stacking and inverting block molds and racks according to the invention is characterized by: - removing a block mold from a stack;

  receiving the block mold on a transfer device

Harbor;

  transport from the block mold to a filling device

payment;

  receiving the block mold in the return device

  payment; automatic reversal of the block mold;

  the pouring of the block mold overturned on the device

transport tif;

  transport from the block mold to a stacking device

  age. The stacking machine according to the invention operates according to the method, the different working phases being

carried out successively.

  It is preferable that the block mold is grasped and moved by a carriage of the transport device after having been removed from the stack. With this phase of the process, the planned carriage is already brought to release the mold.

  blocks of the sampling device in the stack.

  It is also preferable that the block mold entered

  by the lifting pawl is gripped by the carriage and released

  re by the lifting pawl In this way, the transfer of the block mold from the stacking device to the transport device can be carried out by the trolley itself,

  mounted in the transport device.

  It is also preferable that the block mold s Qit grabbed by grabs of a clamping device and blocked

  with an empty block mold This phase of the process is carried out

  kills immediately after transporting the cart in the posi-

  overturning assembly The assembly to be overturned is blocked di-

  correctly, without intermediate operations, when it is

still located on the cart.

  Finally, it is preferable that the block mold should

  poured back into the transport device and trans-

  it - carried to the stacking device In this way, the transport device is conveniently used for receiving the overturned block mold and discharging the overturned block molds into the stacking device. preferable also that the rails are lifted to free the block molds from the catch of the ratchet

  lifting This allows them to be released quickly and easily. It is also preferable that block molds in-

  core located on the carriage are blocked by the clamping device The clamping device * therefore grips directly-

  the approached block mold, blocking an empty block mold already located in the clamping device with a block mold to be clamped. 15 It is also preferable that the rails are lowered.

  before the rotation device is actuated In this way, a free space is created to overturn the

block mold.

  It is preferable that the rails are raised

  after overturning the block molds.

  It is also preferable that the carriage simultaneously transports a block mold taken from the stack to the

  overturning device and an already turned block mold

towards the stacking device.

  Thus, the trolley is used simultaneously for transport

  a new block mold and an already reinforced block mold

  poured In this way, the transport operations are combined This arrangement eliminates working phases and, consequently, increases the operating cycle and

  the number of block molds overturned per unit of time.

  Finally, it is preferable that the carriage is brought back during the inversion of a block mold and transfers a

  new block mold for the battery removal device.

  To this end, the time required for overturning is used to bring the cart back for reception.

12 - a new block mold.

  In this way, the overturning operation and

  the return operation are combined over time.

  This arrangement also saves time and increases

  lying the operating cycle. Other advantages, features and possibilities of application of the present invention appear in the

  Following description of exemplary embodiments referring to the appended drawings, which show in: FIG. 1: a front view of the stacking unit according to

  the invention, comprising the return device

  payment; Figure 2: shows a side view of the stacking unit shown in Figure 1; Figure 3: a front view of the sampling device

  battery (lifting pawl) according to the invention

  tion; Figure 4: a side view of the battery removal device shown in Figure 3; Figure 5: a detailed front view of the inversion device according to the invention;

  Figure 6: a side view of the overturning device

* ment according to the invention shown in the figure

  gure 5; Figure 7: a detailed front view of the transport device according to the invention; Figure 8: a side view of the transport device according to the invention shown in Figure 7;

  Figure 9: a front view of another embodiment

  tion; Figure 10: a top view of the machine of Figure 9. Figures 1 and 2 respectively show a front view and a side view of the stacking unit according to the invention, with a reversing device The unit

  13 - stacking has a rack 16 fixed on its frame-

  sis, which carries a block mold 30 The rack 16, which is provided both on the stack removal side on the left in FIG. 1 and on the stacking side on the right on FIG. 5, is brought in position by an adjustment pawl 34 which grips it from the rear The adjustment pawl 34 is brought into position by a transport device for the base frame 10 The transport device for the base frame 10

  has a hydraulic cylinder which moves it longitudinally-

is lying.

  On the stacking side, shown on the left, of the unit

  stacking device is shown an external centering device

  laughing 8 in the form of a longitudinal profile which serves as the center

  outside trage of block molds 30 located on the holder

  racks 16 The external centering device 8 is connected to a control 58 which, as desired, frees the centering device from the block molds or brings it into engagement with the latter When the external centering device 8 is not engaged , the side entry of the stacking unit is

  free, so that a stack of block molds can be inserted

  troduit in the stacking machine and be placed on the

racks 16.

  In addition, an integrated centering device is provided.

  6, connected to the chassis of the stacking unit, which is fixed and ensures unilateral centering of the block molds

  already when adjusting the battery.

  On the battery draw side, it is provided

  be a battery removal device 12 in the form of a lifting pawl 60 comprising a ratchet mechanism 62 The battery removal device, which is explained in more detail with FIGS. 3 and 4, is

  attached, on the outside, to a chain 26 which is used for

  vertical movement of the battery removal device

  in the battery picking area and in the stacking area

  The lifting pawl 60 of the sampling device 14 - of pile 12 is used to grab a block mold from below and to transport it vertically. The chain 26 is an endless chain which rotates on chain wheels 24 arranged on

  points of rotation A chain wheel 24 is itself5 coupled to a double chain wheel 44, by means of a smaller drive chain, as well as to a drive motor.

  drag 46 associated therewith The drive chain is kept tensioned by a chain tensioner 14 acting transversely and being in the form of an additional chain wheel 10.

  Above a cross member 68 serving as longitudinal reinforcement is located a transport device 66 which

  used for receiving, transporting and discharging the

  the block For transport lengthwise,

  the transport device has a driving device

  ment 64 which is shown in more detail in Figures 7 and 8 The transport device 66 and the drive device 64 are guided so as to be able to move vertically on guide rods 54 A motor 18, which moves the transport device 66 by means of a rack 52, serves to raise and lower the

  transport device Another motor 20 is used to control

  der the drive device 64, with which the mold

  blocks is moved longitudinally.

  Above the transport device 66 is located

  a reversing device 4 which is connected to a cross

  get the upper longitudinal stacking machine

  overturning device 4 has a clamping device 50 which is explained in more detail with reference to

  Figures 5 and 6 The clamping device 50

  used to center and tighten the block mold located on the

  transport positive 66 with an empty block mold The dis-

  positive 50 is actuated by a toothed belt 42, actuated by a motor, and by a double disc

toothed belt 40.

  - In addition, the reversing device 4 has a rotation device 22 which is used to rotate the clamping device with the block molds 30 tightened. The rotation device 22 comprises a toothed belt disc 38 actuated by a motor, which makes turn the clamping device by means of a toothed belt 36 Le

  rotation device also includes a transmission shaft

  sion 48 which provides the connection with the rear part of the

clamping device.

  A cross member 70, which connects the rear part to the front part of the stacking machine, serves as reinforcement

cross section of the chassis.

  Figures 3 and 4 show in detail-

  lée, the construction of the stacking device 12 shown

  in FIG. 2, with a ratchet mechanism 62 and a click

  lifting quet 60 The lifting pawl 60 is formed by a rear part 98 which is connected to the chain 26 and by a

  slide 80 fixed by means of crosspieces, which carries the

  quet proper The rear part 98 has the lower pawl pin 90 and the upper pawl pin 86, which are fixed to the rear part 98 An upper frame 84, which is rotatably mounted on the slide 80, is articulated with pivotally on the upper ratchet axis 86 A lower frame 88, which may be formed of cross members, is pivotally articulated on the lower ratchet axis

  , and it is also rotatably mounted on the slide 80.

  A transverse rod 94 is connected to the lower frame 88,

  which serves as a lifting limit The transverse rod 94

  smooth in an oblong hole which is made in an upright

  delimitation 96 The amount of delimitation 96 is arti-

  pivoted at point 86 and assembles with the lower frame 88 by means of the oblong hole and the

  transverse rod 94 In this way, the pivotal movement

  as long as, in principle free, the slide 80 is limited to-

  turn of the rear part 98 The length of the oblong hole 16 - determines the maximum authorized pivoting angle Such a limitation of the upward stroke is necessary so that the slide 80 projects only from a defined length when it is not pressed against a next upper block mold.

  Figures 5 and 6 show the construction of the

  reversal positive 4 shown in Figures 1 and

  2, with the clamping device 50 and the locking device

  tation 22 The overturning device 4 has a

  belt 100 in which two upper round racks and two lower round racks are guided

  114 which are connected together by pinions 118 and detach

  place in a contrary movement The pinions 118 are engaged with the double toothed belt disc 40, which is actuated by an inner shaft 110 and a toothed disc

  112 attached to the latter When the toothed disc 112 is ac-

  actuated, the double toothed belt disc 40 is actuated, and with it the pinions 118, which causes displacement

  ascending or descending of the grabs 122 connected to the cre-

round links 114.

  The rotation device 22 contained in the arrangement

  overturning device 4 has a toothed disc 108 The toothed disc 108 is itself connected to a hollow shaft 106

  located on the inner shaft 110, which is guided in a pa-

  link 104 and rotate concentrically with the inner shaft 110 The hollow shaft 106 is connected to the enclosure, so that when the rotation device is

  actuated, the enclosure 100 and the clamping device can

  wind rotate at any angle The round racks 114 of the clamping device are connected to the grabs 122

  by means of transverse joining elements 120, which center

  squeeze and tighten the block molds to be tightened.

  Figures 7 and 8 explain in more detail the transport device 66 and the drive device 64 shown in Figures 1 and 2. The 17 - transport device 66 has a carriage 130 guided on rails 137, which serves upon receipt and transport of block molds The carriage 130 has wheels 134 which rest on the rails 137 The wheels 134 are connected together by crosspieces 136 The rails 137 are connected to a connecting rod 150 by means of a frame 144, which rod is

  shaped as a rack, at least in part, and meshes in this zone with a pinion 156 which is connected to a motor 148 for the upward travel of the transport device. The motor 148 causes the lifting and lowering. -

  rails 137 and the carriage 130 guided on said rails, by means of the connecting rod 150 The carriage 130 has centering bolts 132 situated at its ends, which serve to bring it into engagement with the block molds of a

centered way.

  To move the carriage 130 along the rails 137, there is provided, in the carriage 130, a guide 142 shaped in transverse groove, in which slides a cam 143 of a crank 138 The crank 138 is itself connected to a motor 140, at its other end, which serves to pivot the crank When the crank is actuated, the cam 143 serves to drive the carriage and the guide along the entire length of the rails 137, as a function of the angle of

  pivoting of the crank In this case, a pivot angle

  tement 90 of the crank corresponds to a movement of the carriage 130 from the receiving position shown in Figure 7 to the inversion position located approximately

  in the middle, while a swivel angle of 1800 corresponds to

  lays down a movement of the carriage 130 from the position of

  load shown on the right in the stacking position.

  The transport device 66 is guided by ti-

  guide bars 146 which slide in a hollow guide 152.

  The two hollow guides are connected by a crosspiece 154 which

serves as reinforcement.

  The stacking machine comprising a tilting device according to the invention operates in the following manner:

  next First, a stack of block molds is introduced into the stacking machine and placed on the rack. The block molds in place are centered, by their rear side, by means of a centering device. inte-

  laughing 6 After that, the control 58 of the central device

  external trage is actuated, and the profile 8 is brought into engagement with the external face of the stacked block molds, this

which centers and blocks them.

  To take the block molds from the stack, the drive chain 26 of the stack picking device 12 is set in motion by means of the motor 46, which

  battery removal device vertically moving

  slightly upward along the stacked block molds, as shown in FIG. 2, and, due to the configuration shown in FIGS. 3 and 4, it grips only the highest block mold, and

  engages with it Thanks to the chain 26, the

  lifting quet 60 connected to the lifting device

  stack 12 is lifted, and the latched block mold is removed

  placed upwards, up to the highest point of the lifting pawl 60 At this time, the motor 46 and the chain 26 stop. To move the block mold to the position of

  overturning, the transport device 66 is set in motion

  and the carriage 130 guided on the rails moves

  to come into the receiving position shown on the left

  che in Figure 7, where it is located below the mold

  blocks To release the block mold 30 from the pawl of the

  vage 60, the motor 148 being used to control the upward stroke

  dante of the transport device is- actuated, and the cha-

  riot 130 is pushed until it receives the mold

  blocks located above him and releases him from the pawl of the-

  vage. To move the carriage 130 on the rails 137, the 19 - motor 140 for driving the crank 138 is actuated,

  and the carriage is moved along the rails by means of the cam 143 sliding in its guide 142 The servo control of the crank stops at a pivoting angle of 90, which is associated with the overturning position.

  At this point, the block mold is centered and locked

  queté, from below, by the grapple 122 connected to the device

  tightening tif, while an empty block mold fixed to the

  upper grab 122 moves down Both

  the blocks are centered and connected together by the grapple

122 who moves with them.

  To create sufficient overturning space, the

  transport device is moved down by the mo-

  tor 148, so that a sufficient interval for the

  overturning is created between the block mold

  and the transport device.

  To invert the tight block molds in the clamping device, the motor of the rotation device 22 is activated, and the racks rotate by 1800, so that the previously empty block mold has now received the contents of the block mold to be reversed. , previously full. After overturning, the transport device

  is raised again by means of the motor 148, to receive

  see the block molds in support and allow the loosening-

block mold age.

  After that, the control of the clamping device

  again separating the grabs 122, the pre-block mold

  fully full and now empty remaining attached to the grapple

  upper, while the block mold 30 previously

  of and now full rests freely on the device

transport.

  To stack the overturned block mold, the motor

  moves the crank by an additional pivot angle

  of 90, relative to its full angle 1800, in -

  which the carriage 130 is in its unloading position

  block mold ge, shown on the right.

  In this position, the chain 26, with the lifting pawl 60 also serving as a stacking device 12, is set in motion and moved until it grasps the inverted block mold from below The carriage 130 is now moved downwards by the motor 148, so that the block mold is carried freely by the pawl

lifting 60.

  The lifting pawl 60 lowers, with the block mold engaged, until the block mold rests on the rack 16 or on the already stacked upper block mold. With this, the inversion operation is finished. The front view of a unit stacking machine

  shown in Figure 9 shows a transport

  chain lifter 204 on which there is an approached block mold 202 The chain conveyor 204 is located under the

  form of two conveyor belts 207 rotating in parallel

  Lement and synchronously The rack 202 to be brought each time rests on the conveyor belts 207 by its edge zones A conveyor belt 207 is driven

  by a chain wheel 210 located on one side, which is

  same connected to a spur gear 208 by means of a chain 212, which spur gear is fixed to the shaft of a motor 206 Only one motor 206 is necessary when the chain wheel 210 is connected to the corresponding chain wheel of the other transport belt The assembly is carried out by means of a shaft 214 which connects the two chain wheels 210 and passes through a bearing 218 in the area of each chain wheel.

  On the two stacking machines 203 and 205 shown

  seen in Figure 10, Figure 9 shows only the

stacking machine 205.

  The stacking machine 205 has a structure 21 - which extends perpendicular to the chain conveyor

  204 and which engages, by its lower frame 242, in the chain conveyor 204 For the support of the emitting machine

  crushing 205 on the bottom side and on the chain conveyor 204.5, elements 216 are provided which are fixed to the lower frame.

laugher 242 of the stacking machine.

  The stacking machine 205 has a chassis 220 which carries a straight centering device 222 in the form of

  longitudinal profile On the opposite side of the stacking machine

  lage 205, the chassis carries an external centering device

  laughing 224 also in the form of a longitudinal profile The two centering devices serve for the external guidance of the

  block mold 202, by complementarity of shapes and materials

  In addition, it is provided on chassis 220 for

  the stacking machine 205, an integrated centering device

  right laughter 226 and a left inner centering device

  che 228, also in the form of two pro-

  longitudinal yarns, which serve for the internal centering of the block mold 202.

  The block mold 202 located on the conveyor

  chain 204 in the area of the stacking machine is moved

  cé by a drive device 230 guided vertically-

  ment, the drive device 230 being fixed to a rotating drive chain 238 which is actuated by a chain wheel 232 The drive chain 238 is used to raise and lower the block mold 202 to be transported in the machine d stacking The chain wheel 232 used for the drive is connected to a motor shaft 234 by means of a chain 236 To cover and protect the motor, a motor plate 240 is provided The motor plate 240

  is attached to the lower frame 242 of the stacking machine.

  In the upper area of the stacking machine there is a transport device 252 which is used to transport the contents of the block molds. The transport device 252 has a reception device 274 which 22 -

  used for receiving, maintaining and discharging or

  loading the contents of block molds

  reception 274 is mounted on rails 246 so that

  see it move transversely and is connected to a

  mesh 260 which allows a precise advance of the receiving device 274 The transport device 252 has a

  pinion 262 which meshes with the rack 260 For ac-

  the pinion 262, and consequently the receiving device

  tion 252, a motor 258 is provided which, during operation

  can move the receiving device forward or backward along the rails 246 The receiving device 274 is guided on the rails 246 with low friction

  by means of a bearing 254 The rails 260 extend perpetually

  specifically to the two stacking machines and connect these by being fixed to the upper frame 244 of each

  stacking machine by means of a fixing 248.

  The receiving device 274 has provisions

  suction devices 276 in the form of suction bells

  tion or suction cups, which are shaped in such a way that they can reach the products contained in

  the different tanks of the block mold Each device

  suction tube 276 is connected to a vacuum tank 272

  common that takes care of the necessary depression The

  see vacuum 272 is connected to a vacuum pump 250 by means of a vacuum line 266, which vacuum pump is attached

  on a bottom plate of the transport device 252.

  The receiving device 274 is further guided so as to be able to move vertically, so that the suction bells can be placed on the block mold to be emptied and be lifted again after

  that the mold has been emptied For this purpose, the suction devices

  276 are connected to a shaft 264 which is movably mounted in the receiving device, In addition, the suction devices 276 are connected to a rack 270 which is adapted for precise vertical advance La 23 -

  rack 270 is moved by a motor 256 and a pi-

  gnon, fixed on the motor shaft, which is engaged with the

rack 270.

  The stacking unit according to the invention operates synchronously so that block molds are brought synchronously onto the two conveyors

  chain 204 associated with stacking machines 203 and 205.

  The two chain conveyors 204 are moved by im-

  pulses, so that two corresponding block molds are introduced into the stacking machines 205 and 203 respectively during a defined work cycle When the block molds are at rest, the drive chains 238, comprising the devices d drive 230, are actuated at the same time in each stacking machine,

  which are driven by a 234 motor shaft

  mun The driving devices 230 pick up the block molds from below and transport them, simultaneously and synchronously, to a transfer position

  located in the upper area of the stacking machine.

  After the block molds have stopped, the transfer device

  port and receiving device located in the area of

  the stacking machine 203 is operated, and the arrangements

  suction heads 276 are lowered to the level of the block molds by means of the motor 256 and deposited on the products

  contained in the tanks of block molds.

  Immediately after that, the vacuum pump 250 is activated.

  thanks to which the suction devices 276 as-

  pire and retain the products located under the suction bells. After a sufficient vacuum has been created, the suction devices 276 are moved vertically upwards, by actuation of the motor 256, until

  let them come to rest at a high point.

  The block mold products located under the.

  suction bells are transported along the rails 24 - 246, by actuation of the motor 258 and the pinion 262 associated therewith, from one stacking machine to the other stacking machine, o the suction devices are lowered onto the empty block mold which is located below them, again by actuation of the motor 256 Then the vacuum pump 250 is actuated to discharge the vacuum reservoir 272 and, consequently, release the product situated under the

suction bells.

  The block mold which has just been filled is trans-

  carried downwards by the actuating devices 230, just like the now empty block mold which is located in the other stacking machine, and it is deposited on the conveyor belts 207 of the chain conveyor 204, and this is how a work cycle of

  the stacking unit The empty block mold located in the zo-

  ne of the stacking machine 203 and the block mold full

  located in the area of the stacking machine 205 are trans-

  carried further by chain conveyors 204 action-

  born, and new block molds 202 are brought in.

Claims (25)

  1 stacking unit comprising a device for taking from a pile (12) for taking a block mold (30) or a rack from a pile, a transport device (66) for transporting the taken block mold (30) of the stack, an inversion device for inverting the block mold, and a stacking device (12) for stacking the inverted block mold on a pile, characterized in that the inversion device (4) receives the mold for blocks (30) of the transport device (66) and restores it, overturned, to said transport device transport (66).   2 stacking unit according to claim 1, characterized in that the reversing device (4) has a clamping device (50, 42, 40, 112, 110, 116, 114, 120, 122) for clamping the mold to blocks (30) to be inverted with an empty block mold waiting in the overturning device (4).   3 stacking unit according to claim 1 or 2, characterized in that the reversing device (4) has a rotation device (22, 38, 36, 108, 106) for reversing the clamping device (50) by 1800 and the   tight block molds (30) therein.   4 Stacking unit according to any one of   claims 1 to 3, characterized in that the device   of rotation (22) and the clamping device (50) are actuated by means of two shafts (106, 110) mounted concentrically.   Stacking unit according to any one of   previous claims, characterized in that the   clamping device (50) has two grapples (122) with opposite movement which serve to center and tighten the two block molds (30).   6 stacking unit according to claim 5, characterized in that the two grippers (122) have racks (114) which are engaged with a common pinion (118), the pinion (118) being coupled to the control (40, 42) of the clamping device.   7 stacking unit according to any one of   previous claims, characterized in that the   transport device (66) has a carriage (130) guided on rails (137), which is used to transport a block mold taken from the stack to the reversing device and an already overturned block mold discharged from the overturning. 8 stacking unit according to claim 7, characterized in that the carriage (130) has several wheels (134) which act as support against the rails (137),   said wheels (137) guiding the carriage (130).   9 stacking unit according to claim 7 or 8, characterized in that the transport device (66) comprises a drive means (64) for moving the carriage (130), which engages in a guide (142) planned in the carriage (130).   Stacking unit according to claim 9, characterized in that the drive means (64) has a crank (138) which is rotatably mounted on a control shaft (140) and has a cam (143) that slides in the guide (142).   11 Stacking unit according to any one of   previous claims, characterized in that the   transport device (66) has a lifting device (18, 148, 156, 150) which is used to raise and lower   the rails (137) and the drive means (64).   12 Stacking unit according to any one of   previous claims, characterized in that the   stack picking device (12) has a lifting pawl (60, 62; 80.98) which is shaped in such a way that it grips only block molds   (30) which are located at the highest point of the stack.   13 stacking unit according to claim 12, characterized in that the lifting pawl has a slide (80) connected to the lifting pawl (92), the contour of which is designed to bear against the block mold (30) next upper, the slide (80) being preloaded so that the pawl (92) engages   in the block mold (30) to be lifted.   14 A method of stacking and inverting block molds (30) or racks, characterized by the operations consisting in: removing a block mold (30) from a stack; receiving the block mold (30) on a transport device (66); transporting the block mold to an overturning device (4); receiving the block mold in the reversing device (4); automatically invert the block mold; deposit the inverted block mold on the transport device (66); and transport the block mold to a device stacking (12).   15 Method according to claim 14, characterized in that the block mold, after being removed from the stack, is gripped and moved by a carriage (130) of the transport device (166).   16 Method according to claim 14 or 15, characterized in that the block mold engaged with the lifting pawl (12) is gripped by the carriage (130) and   released from the lifting pawl (12).   17 A method according to any one of claims   14 to 16, characterized in that the block mold (30) is gripped by grippers (122) with a clamping device   (50) and tightened with an empty block mold.   18 Method according to one of claims 14 to 17,   characterized in that the overturned block mold is returned to the transport device (66) and transported to the stacking device (12).   19 A method according to any one of claims   14 to 18, characterized in that the rails (137) are raised to release the block mold from the grip of the lifting pawl (12).   Method according to any of the claims   14 to 19, characterized in that the block molds (30) still located on the carriage (130) are clamped by the clamping device (50).   21 Method according to any one of claims   14 to 20, characterized in that the rails (137) are lowered before the rotation device is actuated (22).   22 A method according to any one of claims   14 to 21, characterized in that the rails (137) are raised   after overturning the block molds (30).   23 Method according to one of claims 14 to 22,   characterized in that the carriage (130) simultaneously transports a block mold taken from the stack to the reversing device (4) and a block mold already   overturned towards the stacking device (12).   24 Method according to one of claims 14 to 23,   characterized in that the carriage (130) is brought back during the overturning of a block mold and receives a new   block mold of the battery removal device (12).