Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
  • B65B61/20—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for adding cards, coupons or other inserts to package contents
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B25/00—Packaging other articles presenting special problems
  • B65B25/14—Packaging paper or like sheets, envelopes, or newspapers, in flat, folded, or rolled form

Definitions

• the invention relates to a device for loading a container with a certain number of layered, stacked cellulose products, in particular cotton pads, according to the preamble of claim 1.
• the manufacturing device can be, for example, a multiple punch which punches rondelles from a cotton band, which come on the market as so-called cotton, cosmetic or make-up removal pads.
• the stack flow is divided into partial stacks with the number of pads provided for each container by means of a separating sheet corresponding to the outline of the products.
• This separating sheet is generally made of flexible material, in particular plastic or cardboard material, and corresponds in outline to the products.
• the invention is therefore based on the object of developing a loading device of the generic type in such a way that automatic loading of containers with a certain number of layered, stacked pulp products is possible in a reliable and constructionally simple manner.
• the loading device basically has a separating unit for dividing the stack flow into partial stacks and an ejection device for pushing the partial stack out of the separating unit into a container.
• the separating unit In the specified construction of the separating unit, use is advantageously made of the flexural properties of the separating sheet which is already present in the stack flow supplied, in that it is temporarily held in a holding device on the insertion side of a receiving sleeve and this process is detected by means of a detection device.
• the separating sheet practically represents a "fixed point" within the stack flow, on the basis of which, with a retaining device, the partial stack that follows the partial stack to be separated in the receiving sleeve during a sliding movement of the receiving sleeve relative to the retaining device, forming a gap between the two Partial stacks are retained in the feed pipe.
• the separated partial stack can be pushed out of the receiving sleeve into the container.
• the container itself can on the one hand be a tubular film bag or similar sales container or on the other hand e.g. act as a kind of solid cartridge by means of which the partial stack is transported to a separate packaging device.
• Claim 2 characterizes a particularly simple embodiment of the holding device for the separating sheet in the form of rows of teeth on the inner surface of the receiving sleeve.
• the separating sheet is inserted into these rows of teeth under the pressure of the stack flow brought in and held there.
• the diametrical distance of the rows of teeth and their distance in the peripheral direction are dimensioned such that the flexurally elastic separating sheet in its holding position in the shark
• the device is held under the pressure of the stack flow in a configuration that is curved in a cylindrical manner in the stack flow direction.
• the retaining device designed according to claim 9, with preferably hook-shaped retaining pins engaging laterally in the free cross section of the receiving sleeve, can let the peripheral edges of the cellulose products located in the receiving sleeve and the fixed separating sheet in which these parts pass "snap" their edges over the pens.
• the cellulose products of the partial stack following in the feed tube following the separating sheet are gripped by the claw-shaped or hook-shaped retaining pins, retained due to the compressibility of this stack, compressed in the direction of the stack flow and pressed away from the partial stack located in the receiving sleeve (claim 10).
• Claims 4 to 8 and 12 characterize advantageous developments of the detection and extension device of the loading device according to the invention.
• FIG. 1 shows a schematic longitudinal section through a first embodiment of a loading device with its receiving sleeve in the initial state
• FIG. 2 shows a cross section along section line II-II of FIG. 1
• Fig. 3 shows a longitudinal section through the loading device acc. 1 with the receiving sleeve in the separation position
• FIG. 5 shows a longitudinal section through a loading device according to the invention in a second embodiment with the receiving sleeve in the initial state
• FIG. 6 is an enlarged detail longitudinal section of the device of FIG. 5,
• FIG. 8 shows a longitudinal section through the receiving sleeve and the feed tube of the device according to FIG. 5 in the separated position of the receiving sleeve
• FIG. 12 shows a partial longitudinal section through a loading device according to the invention in a third embodiment with the receiving sleeve in the initial state
• FIG. 13 shows a vertical cross section along the section line XIII-XIII according to FIG. 12.
• FIGS. 1 and 3 has a feed tube 1, of which only the end 2 is shown in FIGS. 1 and 3.
• this feed tube 1 circular cotton pads 3 are fed as a stack flow 4 from a punch to the loading device.
• the cotton pads 3 lie flat on one another and extend at right angles to the stack flow direction S.
• a separating sheet 5 made of flexible plastic material is inserted in the stack stream 4, whereby the stack stream 4 is subdivided according to the desired number of cotton pads 3 per packing unit.
• the separating sheets 5 correspond in shape to the outline of the cotton pads 3 and have an exactly the same outside diameter.
• the loading device has a separation unit, designated as a whole as 6, and an ejection device 7, the construction and mode of operation of which are explained in more detail below.
• the centerpiece of the separation unit 6, with which the continuous stack flow 4 is to be divided into partial stacks 8, 8 'for loading a container, is a receiving sleeve 9, which corresponds in cross section to the feed pipe 1 and whose end 2 is arranged coaxially.
• these two components overlap by corresponding annular step-shaped shoulders 10, 11 in the walls 12, 13 of the feed pipe 1 or the receiving sleeve 9.
• the latter serves to receive and separate the partial stacks 8 to be inserted into a container , 8 'from the stack flow. 4 and can be moved back and forth in the stack flow direction S by means of (not shown) pneumatic piston-cylinder drives and is formed coaxially with the feed pipe 1.
• two pairs of rows of teeth 15, each arranged diametrically opposite one another, are provided on the insertion side 14 of the receiving sleeve 9 facing the end 2 of the feed tube 1, which are formed on the inner surface 16 of the receiving sleeve 9 and parallel - run to the stack flow direction S.
• the teeth 17 of the rows of teeth 15 are each in engagement with the peripheral edge 18 of the separating sheet 5 in its holding position.
• the diametrical spacing a of the pairs of tooth rows 15 is dimensioned such that the separating sheet 5 is held under the pressure of the stack stream 4 brought up in a configuration which is convex in the stack stream direction S. Because of the arrangement of the two pairs of tooth rows 15, which can be seen in FIGS.
• Two retaining pins 19, 20 which can be inserted radially from the outside, transversely to the stack flow direction S, into the peripheral region of the free cross section of the receiving sleeve 9 are provided as the retaining device.
• These retaining pins 19, 20 each engage in the receiving sleeve 9 via an elongated hole 21, 22 running parallel to the stack flow direction S in the wall 13 of the receiving sleeve 9. They are each driven by a pneumatic piston-cylinder drive (not shown), which also carries each retaining pin 19, 20 from the retracted position shown in FIG. 2 outside the free inner cross section of the receiving sleeve 9 into the engagement position shown in FIG. 4 an engagement depth e.
• a mechanical stop switch 23 in the form of a microswitch is provided as a detection device for detecting a separating sheet 5 held in the tooth rows 15 in alignment with the tooth rows 15 in the stack flow direction S.
• the stop contact 24 of the stop switch 23 projects through a bore 25 in the wall 13 of the receiving sleeve into its free inner cross section.
• a sliding arm 26 which can be inserted radially into the receiving sleeve 9 and which, in its insertion position shown in FIGS. 3 and 4, runs in a longitudinal opening 27 running parallel to the stack flow direction S during its displacement in the direction S. Both the radial insertion movement and the displacement movement running parallel to the stack flow direction S are accomplished by corresponding pneumatic piston-cylinder drives, which in turn are not specifically shown.
• the functioning of the loading device is as follows:
• the stacking stream 4 with cotton pads 3 is inserted into the receiving sleeve 9 via the feed tube 1 until the separating sheet 5 engages with the rows of teeth 15 and arches convexly and is held.
• the separating sheet 5 actuates the stop edge with its peripheral edge 18.
• FIGS. 1 and 2 The situation discussed above is shown in FIGS. 1 and 2, wherein the retaining pins 19, 20 are located outside the free inner cross section of the receiving sleeve 9. Controlled via the stop switch 23, the retaining pins 19, 20 are then inserted into the free inner cross section of the receiving sleeve 9 via the elongated holes 21, 22, in a position that lies in front of the separating sheet 5 in the stack flow direction S. The receiving sleeve 9 is then displaced in this direction S by the length of the elongated holes 21, 22 relative to the feed pipe 1 and the retaining pins 19, 20 fixed in the stack flow direction S.
• the sliding arm 26 engages radially from the outside (FIG. 3, arrow 29), which subsequently carries out a sliding movement (arrow 30) over the entire length of the receiving sleeve 9 in the stack flow direction S and thus the partial stack 8 from the Pushes the receiving sleeve 9, for example, into a ready-made tubular film bag. Then the sliding arm 26 is returned to its starting position, the retaining pins 19, 20 are pushed out of the free inner cross section of the receiving sleeve 9 and the latter is returned to the starting position shown in FIG. 1.
• the charging device shown in detail in FIGS. 5 to 11 essentially corresponds in its basic structure and its function to the charging device shown schematically in FIGS. 1 to 4.
• matching components are identified with matching reference numerals and no longer require detailed discussion. Rather, only the essential differences in the structure of the loading devices shown in FIGS. 1 to 4 or 5 to 11 are to be explained in more detail below.
• the receiving sleeve 9 of the separating unit 6 is divided into two and consists of a guide sleeve 31 and a sliding sleeve 32 which is firmly connected coaxially therewith.
• the guide sleeve 31 surrounds the end 2 of the feed tube 1, which is reduced in its outer diameter by the shoulder 10, in the rectangular recesses 33 running parallel to the stack flow direction S are formed.
• Guide rails 34 run in these recesses 33 and are firmly connected to the inside of the guide sleeve 31.
• the guide sleeve 31 also has on its top and bottom in the stack flow direction S openings 35, 36 through which the claw-shaped retaining pins 19, 20 engage in the inner opening of the guide sleeve 31 in this embodiment.
• the intervention control is described in more detail below.
• the holding device consists of two diametrically opposite rows of teeth 15, the teeth 17 of which engage with an engagement depth e in the inner opening of the guide sleeve 31.
• the rows of teeth 15 are not arranged above and below, but on the two sides of the guide sleeve 31 in pairs diametrically opposite, the rows of teeth 15 arranged on one side being relatively narrow Have distance p in the peripheral direction.
• the Rows of teeth 15 are arranged on tooth plates 37, which pass through the guide sleeve 31 via corresponding openings 38 and can be variably fixed in their engagement depth e on the guide sleeve 31 via corresponding clamping elements 39.
• each separating sheet 5 is fixed in a convex-cylindrical bulge, the bending axis running vertically.
• the swivel lever 40 has a short lever arm 42 facing the guide sleeve 31 and a long lever arm 43 which runs obliquely upward with respect to the stack flow direction S.
• a disc 44 is rotatably mounted, which engages through the opening 35 in the guide sleeve 31.
• the disc plane lies in the vertical central longitudinal plane V of the receiving sleeve 9.
• the disc 44 rolls on the outer circumference of the stack flow not shown in FIGS. 5 to 11.
• the tension spring 46 which is attached approximately centrally to its long lever arm 43 and is counter-supported on a fixed arm 45.
• the depth of engagement of the disc 44 into the inner opening of the guide sleeve 31 can be variably adjusted by the adjustable stop 47 at the free end of the long lever arm 43 of the pivot lever 40.
• the retaining pins 19, 20 are present in a number of four and are each arranged on pivot levers 49 arranged essentially parallel to the stack flow direction S below or above the guide sleeve 31, each in a fixed pivot bearing 50 are mounted.
• the swivel levers 49 are acted upon in the engagement direction E of the retaining pins 19, 20 by a helical compression spring 51 in each case.
• the control of the position of the retaining pins 19, 20 takes place directly via the receiving sleeve 9, in that the pivot levers 49 are each in contact via guide slopes 52 at their free ends with a counter surface 53 on the receiving sleeve 9.
• This counter surface 53 is formed on the end face of the ring 54 facing the swivel lever 59, which surrounds the receiving sleeve 9 in the connection area between the guide sleeve 31 and the sliding sleeve 32.
• the displacement movement of the receiving sleeve 9 is brought about by the piston-cylinder drive 55 shown in FIG. 5, which displaces the carriage 56 carrying the receiving sleeve 9 along the longitudinal guides 57.
• the free The end of the sliding sleeve 32 runs in a dash-dotted mouthpiece 58, onto which, for example, a foil bag can be attached.
• the extension device 7 is also shown in detail.
• This consists of a carriage 59 which can be moved back and forth on a running rail 60 via rollers 61 parallel to the stack flow direction S.
• a transverse guide 62 is arranged on the carriage 59, in which the sliding arm 26 of the extension device 7 can be inserted into the sliding sleeve 32 from below via a longitudinal opening 27 'via two push rods 63.
• the transverse displacement of the sliding arm 26 takes place via a further piston-cylinder drive 64 in the region of the transverse guide 62.
• the process starts 5 the sliding arm 26 is moved into the inner opening of the sliding sleeve 32 by means of the piston-cylinder drive 64 and moved by means of the carriage 59 into the position shown in FIG. 5 on the left end.
• the partial stack 8 is pushed out of the sliding sleeve 32 via the mouthpiece 58 into the film bag placed thereon.
• the extension direction 7 then moves back into its starting position.
• the receiving sleeve 9 is pushed back to the right into the starting position shown in FIG.
• FIGS. 12 and 13 differs from the loading device according to FIGS. 5 to 11 only in the design of the detection device for detecting a separating sheet 5 that has entered the rows of teeth 15 all the same in design and function Components with the same reference numerals and no further explanation of the operation of the loading device is required.
• the detection device for recognizing a separating sheet 5 in the stack stream 4 is no longer a mechanical scanning device, but rather a contactlessly operating sensor 65, which works on an optical basis and which is arranged above the opening 35.
• This is a commercially available sensor with the designation "LD20" from Datalogic, which has a UV lighting source 66, which is schematically indicated in FIG. 12, for illuminating the stack current 4 and a light-sensitive receiver 67 for detecting that of the respective one separator sheet 5 held in the rows of teeth 15 due to the UV light emitted light.
• a fluorescent substance is inserted into the separating sheets 5, which are preferably made of plastic, and which, when illuminated with UV light with a wavelength of approximately 300 nm to 380 nm, re-emits visible light that is registered by the receiver 67 .
• the sensor 65 emits a corresponding output signal, which in the central control of the loading device corresponds to the output signal of the inductive proximity switch 48 in the exemplary embodiment according to FIGS. 5 to 11 and can be used to control the processes in the separating unit 6 and the extension device 7.
• the optical sensor 65 has the advantage that it detects the occurrence of a separating sheet 5 in the rows of teeth 15 extremely reliably and practically without false reports, since on the one hand the fluorescent separating sheets convert the incident UV light very effectively into visible light and thus give a clear light signal.
• the cotton pads 3 must be practically free of fluorescent substances, so that they behave in a light-neutral manner and practically no re-emit visible light due to the UV radiation.
• the optical sensor 65 thus works very selectively.
• a further advantage of contactless detection is that the edges of the cotton pads are no longer deformed by mechanical sensing elements, such as the stop contact 24 of the stop switch 23 or the disk 44. This has an advantageous effect on the appearance of the cotton pads.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Sheets, Magazines, And Separation Thereof (AREA)
• Stackable Containers (AREA)
• Supplying Of Containers To The Packaging Station (AREA)
• Auxiliary Devices For And Details Of Packaging Control (AREA)
• Stacking Of Articles And Auxiliary Devices (AREA)
• Nonwoven Fabrics (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6488224

Family Applications (1)

Country Status (7)

Families Citing this family (7)

Citations (4)

Family Cites Families (6)

• 1993
  • 1993-05-15 DE DE4316363A patent/DE4316363A1/de not_active Withdrawn
• 1994
  • 1994-05-13 DE DE59401614T patent/DE59401614D1/de not_active Expired - Lifetime
  • 1994-05-13 AT AT94916232T patent/ATE147693T1/de active
  • 1994-05-13 ES ES94916232T patent/ES2097049T3/es not_active Expired - Lifetime
  • 1994-05-13 DK DK94916232.5T patent/DK0696987T3/da active
  • 1994-05-13 EP EP94916232A patent/EP0696987B1/de not_active Expired - Lifetime
  • 1994-05-13 WO PCT/EP1994/001550 patent/WO1994026595A1/de active IP Right Grant
• 1997
  • 1997-03-17 GR GR970400501T patent/GR3022827T3/el unknown

Patent Citations (4)

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