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
  • B65B35/00—Supplying, feeding, arranging or orientating articles to be packaged
  • B65B35/10—Feeding, e.g. conveying, single articles
  • B65B35/16—Feeding, e.g. conveying, single articles by grippers
• • 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
  • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
  • B65B11/06—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths
  • B65B11/28—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a curved path, e.g. on rotary tables or turrets
• • 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
  • B65B25/005—Packaging other articles presenting special problems packaging of confectionery

Definitions

• the invention relates to a conveying device for candies with a transfer wheel rotating about a stationary axis, which is arranged between a gripper wheel and a wrapping wheel and on a rotating housing a plurality of pivotable, paired holding elements for detecting and transferring the candies from the gripper wheel to the wrapping wheel and has packaging tongs assigned to the holding element pairs, with a drive device for the holding element pairs and packaging tongs.
• a solution for the continuous transport and wrapping of candies which consists of a separating plate, a gripper wheel, a transfer wheel and a wrapping wheel.
• the gripper wheel, transfer wheel and wrapping wheel rotate in opposite directions continuously and in pairs.
• the speeds of these rotary elements are coordinated so that their holding elements meet symmetrically at the transfer or transfer points at the point of contact of the partial circles with the same rotational speed.
• the holding elements each meet at a 90 ° offset from one another so that they do not interfere with the transfer or takeover.
• This device can be used for small items that are processed by a separating plate to suit the machine.
• This device cannot be used for articles which are cut off from a tangentially supplied continuous strand of mass and in which the cut surface represents the folding surface of the packaging material. Such soft articles would affect the order process on the Distortion plates deform, which would lead to disruptions in the further processing. These items must be recorded individually and fed to the machine.
• DE-A-39 15888 describes a device for wrapping candies with a soft consistency, which also consists of a gripper and wrapping wheel, between which a transfer wheel is arranged.
• the transfer wheel is provided with holding elements for grasping and transporting the candies, the opening and closing movement of the holding elements being carried out by means of a toothed rack, ratchet lever and cam drive in conjunction with a compression spring, and via a pinion in conjunction with a cam drive, the holding elements become after the candy has been taken over swiveled by 90 °. This pivoting movement is completed before the pacic agent is supplied.
• a packaging tongs are provided on the transfer wheel, which apply the cutting to the candy.
• the holding elements pivot back to their initial position after the candies and the packaging have been handed over to the wrapping wheel.
• the drive elements of this device are subject to heavy wear and cause a high level of noise.
• the wear has a negative effect on the positional accuracy of the work organs at the individual transfer and transfer stations and affects the quality of the packs.
• a reliable function of the packaging tongs could not be achieved with the selected cam drive.
• the invention has for its object to design a conveyor of the type mentioned so that a precise, low-wear motion control for the swivel, opening and Closing movement of the holding elements is secured with increased smoothness of the conveyor.
• a control cam device for the holding element pairs is fixed on the stationary axis of the transfer wheel, with a pivot actuating device and an opening and closing control device together for each holding element pair for deriving both the pivoting movement and the opening and closing movement of the holding element pair are engaged.
• the solution according to the invention achieves an extremely compact and essentially play-free and wear-free drive design for the movement control of the pairs of holding elements of the transfer wheel both with regard to their pivoting about their longitudinal axis and with respect to the opening and closing movement of the holding elements of each pair of holding elements.
• Even in the high-performance range of approx. 1400 to 1600 rpm an exact and essentially deformation-free transfer of the sweets can be made possible, the noise emission kept low and a low-maintenance mode of operation of the conveyor device and thus also of the entire candy packaging machine containing the conveyor device can be achieved.
• control cam device is formed by a drum cam with opposed cam tracks, with which cam track a support roller, which is eccentrically mounted with respect to the longitudinal central axis of the pairs of support elements extending radially from the transfer wheel, engages without play, depending on the associated support element pair a pivoting movement of preferably from the initial position of the pair of holding elements To give 90 °.
• the drum cam also has an axially projecting inner flange which in the circumferential direction has a cam disk for controlling a control roller which is in engagement therewith and which is part of the opening and closing control device for each pair of holding elements.
• the control of the packaging tongs movement for applying a packaging blank to the candy picked up by a holding element pair is controlled by a double cam disc in connection with a double cam lever, with a transmission gear designed as a quadrilateral joint providing a correspondingly large adjustment range for the approach and distance movement of a packaging tongs leads to the associated holding element pair.
• An advantageous embodiment for the opening and closing control device which controls the opening and closing movement of the holding elements of a pair of holding elements, can also be achieved in that a plunger transmitting the movement of a control lever directly onto a tooth flank of a tooth that is firmly connected to the one holding element of the holding element pair, preferably two toothed tooth segment acts, while on the opposite side in contact with a tooth flank of the further, connected to the other holding element of the holding element pair, preferably having two teeth, an elastic pretensioning device is arranged.
• the conveyor device enables the swivel control device to generate a swivel-free and quiet run for generating the swivel movement of the holding elements with the aid of the swivel control device.
• the opening and closing control device allows wear-independent, low-play work for generating the opening and closing movement of the holding elements.
• the conveying device can preferably be used for an encapsulated transfer wheel in which all drive parts, including those for controlling the packaging tongs and the holding element pairs, are sealed against external influences, such as sugar dust and the like.
• the space available for driving the holding elements and the packaging tongs is very limited, so that there are difficulties with regard to the control movement of the packaging tongs to achieve the required swivel angle, since the diameter of the packaging tongs used to control the packaging tongs fixed control cam can only be selected relatively small.
• a solution to these problems is achieved by using a transmission gear which increases the pivoting movement derived from the cam disc and which is preferably formed by a four-bar linkage. In the configuration of a preferred embodiment of the invention, this enables the associated pivoting in and out Packaging tongs at a sufficient angle with respect to the associated holding element pair at the required times.
• FIG. 1 shows an axial section of a transfer wheel along the line A-A in FIG. 2,
• Fig. 2 is an end view of the transfer wheel of FIG. 1, partially in section, and
• FIG. 3 shows a schematic representation of a section of the drum curve as a development with curved tracks and associated scanning roller of the swivel control device of the transfer wheel in the direction of a line BB in FIG. 2.
• Fig. 1 shows in axial section along the line AA in Fig. 2 a, preferably the conveyor device for the transfer of candies B between a (not shown here) gripper wheel and a (also not shown here) wrapping wheel transfer wheel 100 for the continuous wrapping of candies of candies with a soft consistency (soft caramels).
• the transfer wheel 100 has a housing 2 rotating about a stationary axis 1.
• holding elements 26, 26 ' which are spaced apart in the circumferential direction in the radial orientation of their longitudinal center axis 30 are arranged in pairs in connection with packaging material pliers 14 which are mounted in the housing 2 between adjacent pairs of holding elements 26, 26'.
• each pair of holding elements 26, 26 ' carries out a conveying movement in the circumferential direction together with the housing 2; at the same time, however, each pair of holding elements 26, 26 'also performs a pivoting movement of 90 ° about the longitudinal center axis 30 between a take-over position for taking a candy B from the upstream gripper wheel and the transfer position to the downstream wrapping wheel relative to the housing 2.
• the oppositely movable holding elements 26, 26 'of each pair of holding elements are moved to grasp the candy B with a certain holding force which does not impair the sensitive good and to pass on between a closed position and an open position.
• a practically play-free pivoting control device 50 is provided with each pair of holding elements 26, 26', while the movement control of the opening and closing movement of the holding elements 26, 26 ', coordinated to control the pivoting movement, is carried out by an opening and closing control device 60 provided in each case.
• Both the pivoting actuation device 50 and the opening and closing control device 60 derive their activation from the drum curve 15 as a common control curve device.
• a pivoting movement of a packaging tongs 14, which, as shown in FIG. 2, is essentially designed as a holding plate is adapted to the movement control of each pair of holding elements, from a double cam disc 3 by a double cam lever 5 in conjunction with a four-bar linkage 4, which acts as an enlargement transmission gear is derived.
• the stationary axis 1, on which the rotating housing 2 with the packaging tongs 14, the holding element pairs 26, 26 'and the associated drive means are mounted, a double cam 3, from which the pivoting movement of each packaging tongs 14 is derived, and, axially spaced therefrom, the stationary drum curve 15, from which the pivoting movement of each pair of holding elements 26, 26 'by 90 ° around it Long axis 30 and the opening and closing movement of the holding elements 26, 26 'of each pair of holding elements is derived.
• the drum cam 15 fastened on the stationary axle 1 is provided with opposing cam tracks 16, between which a scanning roller 17, which is connected to an associated pair of holding elements 26, 26 'and is guided in motion, is guided on an axle 17 ' is mounted eccentrically to the longitudinal center axis 30 of the associated holding element pair 26, 26 and forms a main element of the swivel control device 50.
• Each pair of holding elements 26, 26 ' is mounted on a separate bearing block 24, which is arranged radially near the front end of the housing 2, in turn is pivotable relative to the latter about the longitudinal central axis 30 and for this purpose is directly and space-savingly eccentric with respect to the longitudinal central axis 30 stores the associated scanning roller 17.
• the left bearing block 24 with the associated holding elements 26, 26 '(position at the beginning of the 90 ° pivoting movement about the longitudinal central axis 30) and the central bearing block located in a plane of symmetry of the transfer wheel 100 illustrate the 90 ° pivoting movement each bearing block 24 with the associated holding element pair 26, 26 'on its way with the rotating housing 2 from position X in FIG. 2 to position Y in FIG. 2.
• the scanning roller 17 is mounted directly radially on an end face of the bearing block 24 directed towards the axis 1 of the transfer wheel 100, eccentrically to the longitudinal central axis 30 and guided between the cam tracks 16, so that a very space-saving arrangement is obtained, as is also shown in FIG. 2.
• each individual scanning roller 17 connected to a bearing block 24 and associated holding elements 26, 26 ' which is traveled between the cam tracks 16 of the drum cam 15 in order to rotate the associated bearing block 24 with the holding elements 26, 26' by 90 °, is shown in Fig. 3 is shown schematically as a settlement.
• the eccentric mounting of each scanning roller 17 is made in connection with the design of the cam tracks 16 of the drum cam 15 so that there is a total pivoting angle for each bearing block 24 with the pair of holding elements 26, 26 'mounted thereon relative to that Housing 2 from a uniform pivoting operation on both sides with respect to the longitudinal center axis 30 results in each case half the total pivoting angle (45 °).
• the drum curve 15 integrally has an axially stepped inner flange 15a, with which the drum curve 15 is firmly connected to the axis 1.
• the inner flange 15a of the drum cam 15 projecting axially into the space between the cam tracks 16 is configured at its first shoulder in the circumferential direction to a cam disk 18 on which a control roller 19 of the opening and closing control device 60 for controlling the opening and closing movement of the associated holding elements 26, 26 'rolls.
• the holding elements 26, 26 'form as shown in particular in FIG.
• a respective toothed segment 27, 27 ' is fixedly connected to the respective drive journal 25, 25' and the opposing toothed segments 27, 27 'are, as shown in FIG. 1, connected to one another by a toothing area consisting of two teeth Longitudinal central axis 30 in meshing engagement.
• a plunger 23 which is axially slidable and slidable axially in a sleeve inserted in the bearing block 24 is arranged coaxially to the longitudinal center axis 30 and rests on the one hand on a tooth flank of the toothed segment 27' on the right in FIG. 1 and on the other hand via an adjusting screw 22 on one by a pivot axis 21 supports pivotally mounted cam lever 20 which rotatably supports the control roller 19 at its free end.
• a pretensioning device formed from a spring-loaded counter-holder 28, is arranged in the bearing block 24 opposite the tappet 23 on the other side of the toothed segments 27, 27' the counter-holder 28 rests on one tooth flank of the other tooth segment 27 on the left in FIG. 1.
• the plunger 23 is supported on a spherical end face of the adjusting screw 22, the adjusting screw 22 also making it possible to readjust or adjust the opening or closing position of the opposing holding elements 26, 26 'of a pair of holding elements.
• a projection of the bearing block 24 on the holding element side simultaneously forms a stop 29 with respect to a closed position of the holding elements 26, 26 'in order to rule out a possibly excessive holding force in relation to the consistency of the candy B.
• the double cam disc 3 which is fixed on the axis 1 and with which a double cam lever 5 pivotably mounted in the housing 2 on a pin 6 via cam rollers 7, 7 ', is used for pivot control of each of the packaging tongs 14 designed as a holding plate, as is the case here is shown in FIG.
• the drive movement of the double cam lever 5 is controlled by a four-bar linkage 4, which is called
• the double-neck lever 5 is also part of the four-bar linkage 4
• the double-cam lever 5 in addition to the cam roller pair 7, 7 ', also determining an axis of rotation 8 for a coupling 10, which has an axis of rotation 11 is connected to a crank 12 which, in a fixed, optionally integral one-piece connection, carries a bearing pin 13 which is mounted in the housing 2 and to which an associated packaging tong 14 is firmly connected.
• the straight line between the center point of the bolt 6 and the axis of rotation 8 forms a rocker 9 of the four-bar linkage 4 as the drive element, while the crank 12 forms an output element of the four-bar linkage 4 controlling the packaging pliers 14.
• the elements of the four-bar linkage 4 can be seen again more precisely from the partial sectional view in the lower area of FIG. 2 in conjunction with the view in the left part of FIG. 1.
• the operation of the transfer wheel 100 is explained below.
• the sweets B captured in a strand by the gripper wheel (not shown here) on their long side become at the transfer point (a point which in FIG. 2 runs counterclockwise in advance to the holding element pair 26, 26 'shown in position X) which is already a sweet B has grasped), on which the partial circles of the gripper and transfer wheel 100 are tangent, transferred and captured by a pair of holding elements 26, 26 'of transfer wheel 100 on their end faces.
• the holding elements 26, 26 'of the respective holding element pair are opened, in that the control roller 19 rolls on the cam 18 and, via the cam lever 20 and the adjusting screw 22 screwed into it, the tappet 23, which is on the crowned End face of the adjusting screw 22 is supported, displaced in the axial direction, so that the plunger 23 rotates the meshing tooth segments 27, 27 'directly by resting on a tooth flank.
• the plunger 23 After moving the plunger 23 in the opposite direction and grasping the candy B, the plunger 23 relieves the tooth segments 27, 27 'so that, under the action of the spring-loaded counter holder 28, the tooth segments 27, 27' are rotated in the opposite direction and the holding elements 26, 26 'preferably up to be closed to the stop 29, whereby it is ensured that in this position an appropriate holding force that takes the consistency of the candy, for example soft caramel, into account is exerted on the candy B.
• This position is shown in Fig. 1 and for the position X in Fig. 2.
• the associated packaging clamp 14 has been pivoted towards the associated bearing block 24 and the holding element pair 26, 26 'via the double cam plate 3 in conjunction with the four-bar linkage 4 including the double cam lever 5 and the bearing bolt 13 and will be pivoted after the 90 ° pivoting of the holding elements 26, 26 '(see FIG. 2 middle) a packaging blank P in a known manner fed.
• the packaging tongs 14 are pivoted further against the packaging blank P and the stop 29 by the associated drive means (double cam disc 3, quadrangular joint 4 with double cam lever 5 and cam rollers 7, 7 'and bearing bolts 13).
• the candy B with the pactan agent blank P is transferred in a conventional manner to the wrapping wheel (not shown here) and the bearing block 24 with the holding elements 26, 26 'and the associated packaging clamp 14 are pivoted back into their starting position.
• a particularly advantageous drive design for controlling the pivoting movement and the opening and closing movement of the holding elements of a holding element pair for a transfer wheel is achieved, which has a plurality of such holding element pairs along its U start for the transfer and transfer of candies.
• the device becomes essentially free of play and wear over long periods of time, with precise correlation of the individual phases of movement of the holding element pairs and associated packaging tongs, and also with high tongs

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Specific Conveyance Elements (AREA)
• Confectionery (AREA)
• Basic Packing Technique (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (2)

Family

ID=8207321

Family Applications (1)

Country Status (7)

Cited By (3)

Citations (2)

Family Cites Families (3)

• 1991
  • 1991-11-11 EP EP19910119152 patent/EP0541835B1/de not_active Expired - Lifetime
  • 1991-11-11 DE DE59104513T patent/DE59104513D1/de not_active Expired - Fee Related
• 1992
  • 1992-10-22 NL NL9220024A patent/NL9220024A/nl not_active Application Discontinuation
  • 1992-10-22 DE DE4293914T patent/DE4293914D2/de not_active Expired - Fee Related
  • 1992-10-22 BR BR9206733A patent/BR9206733A/pt not_active IP Right Cessation
  • 1992-10-22 JP JP5508915A patent/JPH07506321A/ja active Pending
  • 1992-10-22 WO PCT/EP1992/002425 patent/WO1993010005A2/de active Application Filing
  • 1992-10-30 LT LTIP163A patent/LT3076B/lt not_active IP Right Cessation

Patent Citations (2)

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