JPH07504143A - Device to control packaging material supply in candy packaging machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] A device for controlling the supply of packaging material in a candy packaging machine. A pair of pull-out rollers for supplying shaped packaging materials and arranged 180 degrees apart from each other. A candy is placed between a control cam pair consisting of congruent cam disks and a holding member pair. A cam disc and a pair of pull-out rollers are used to slightly lift the pull-out roller when there is no and a transmission member between the candies and the holding member pair of the conveying member. The present invention relates to a device for controlling the supply of packaging material in a Gandy packaging machine.

Candy packaging machines are designed to detect the presence of candy and Several devices are already known which interrupt the supply of packaging material in the event of a lack of supply.

German Patent No. 2932860 describes a continuously operating packaging machine. In this device, in addition to the packaging gear, the packaging gear is A detection gear is provided which rotates in synchronization with the gear and has a detection lever that can pivot in the radial direction. It is placed. The detection lever is combined with a pawl and a roller lever, and this pawl and roller lever A cam roller is supported on the roller lever, and this cam roller is It rolls along the cam disc. Candy is present in the holding member pair of the packaging gear. If not, the detection lever in question pivots between this holding element. by this, The roller lever preceding the detection lever in question is locked, which causes the cam segment to One roller of the pair of packaging material rollers is moved from the strip of packaging material through a lever mechanism and a separate lever mechanism. The packaging material transport is interrupted. candy doesn't exist No packaging material pieces are fed while the pair of holding members of the packaging gear passes through the packaging material arrival section.

The disadvantage of such a device is that if there are no two candies in front of each other, Then, the packaging material withdrawal roller is removed from the area of the cam segment by the running roller. This travel distance of the pull-out roller is It consists in being lifted up again without adjustment. This means that the drawer roller short-term application and thus leading to the cutting of narrow pieces of packaging material, so-called chopping? , at the other extreme, leads to a significantly shortened piece of packaging material.

From the specification of the Federal Republic of Germany Patent No. 3936869, claim 1 A device of the type described in the generic concept is known, and the problem with this device is The object is to control the ejection without using a pawl mechanism. This device has the same shape and is interchangeable. It consists of two cam discs arranged on one axis and offset by 180°. . In relation to the number of cycles of the packaging machine, the transmission ratio between the cam disc and the packaging machine is 1:2 . Cam levers are arranged on the cam discs and are each pivotably supported. The cam lever cooperates with a lifting lever, also pivotable, which supports the pull-out roller. do. A gap exists between the free end of the cam lever and the lifting lever; It is possible to control the insertion of the thin plate into this gap.

between the cam lever, lifting lever, and the thin plate necessary to control the thin plate. Play, of course, leads to tilting of the lamina and malfunction. Therefore, the cut mentioned at the beginning Notches also occur in such devices. Cam progress and packaging in the cam disc Lifting of the rollers due to the time required for lifting and lowering the material rollers The last packaging material piece before and the application of the roller will make the first packaging material piece after it slightly shorter. .

In the known solution, the cam profile is controlled by adjusting the cam disc in the following way: It is impossible to do so. In other words, the scraps are just gone, and as a result, the packaging It was not possible to achieve good control so that the dressing pieces were kept as short as possible.

Furthermore, the force acting on the shafts of the pull-out rollers causes the packaging material to be pulled out. Sometimes twisting of the lever mechanism occurs which again leads to failure.

It is therefore an object of the invention to ensure that when the packaging material is fed in without any hindrance, Impeccable adjustment of time for twist-free lifting & lifting of & banding The type of mounting mentioned at the beginning is used to ensure that the pull-out rollers rest against the material. There are seven parts that make up the structure.

According to the invention, this problem is solved by providing that the cam disks each have an inner cam disk half. A compact cam package that is divided into a half part and a cam disc half located on the outside. The inner cam disc halves of both cam discs and the outer cam disc halves are The side cam disk halves are each fixedly connected to one another; , a cover located inside to adjust the saddle point formed between the cam discs. The cam disk half is rotatable relative to the outer cam disk half. solved by.

Advantageously, a drawbar is provided for controlling the motion of the pull-out roller, which is not fixedly supported. A pull rod is provided and can be directly controlled by a cam disc as a transmission member. is provided, and this pull bar is used to lift the pull-out roller. The vertical axis of the tension rod is approximately perpendicular to the plane of the strip packaging material, and the rotation of the pull-out roller is extending through the rolling axis, in which case the drawbar is approximately parallel to the width of the pull-out roller. radially connected to the pull-out roller so as to act on the pull-out roller with approximately central leverage. It is.

According to a further advantageous embodiment of the invention, the cam discs each have a cam roller. A cam lever is provided, and each cam roller is connected to the respective cam. It rotates along the disc and covers both halves of the cam disc. The cam lever is It is preferably provided with a stop and is pivotably mounted on a shaft. cam disc and An advantageous configuration of the transmission element between the pull-out roller is such that the holder is fixed on the shaft, This holder has at its free end a control member which can be pivoted within the range of movement of the stop. You get what you do. Furthermore, according to another advantageous embodiment of the invention, the shaft has a pin placed eccentrically on the end face, and a pull rod is placed on this pin. The pull rod is connected to the bin at one end and to the drawer roller at the other end. It is mounted concentrically on the shaft and centrally along the length of the pull-out roller.

Further advantageous embodiments of the invention are specified in the remaining dependent claims. .

The arrangement according to the invention allows a reliable and effective supply of packaging material pieces. outer cam By rotating the inner cam disk half relative to the disk half, the pull-out roller at the time of lifting, and therefore the interruption of the packaging material supply, as well as the continuation of the packaging material supply. You can perfectly adjust the point of application of the drawer roller for Wear. This perfect adjustment is due to the transfer of the stroke movement of the cam disk to the pull-out roller. It is also transmitted satisfactorily to the pull-off roller by means of a second member.

In particular, in the high mountain horn range of 1500 cycles/min, play and wear that can be a source of error are significantly reduced. It can be kept small so that it practically does not affect the packaging material supply.

Twisting of the transmission member is minimal. This ensures that the last piece of packaging material before supply interruption and the rotation of the pull-out roller to keep the shortening of the subsequent first packaging material piece small. can be done, and so-called chopping can be avoided.

The invention will be explained in more detail below using examples and the associated drawings.

However, in the drawing: FIG. 1 shows a front view of an embodiment of an apparatus for controlling packaging material supply, and FIG. 1, as seen in the direction of line A-A, and FIG. 3 shows a partial view of the cam disc packet according to FIG. Illustrated in partially sectioned side view, Figure 4 shows a front view of the cam disk packet and Figure 5 shows the maximum shortening of the packaging material strips. A schematic diagram of the cam disc extension at the time is shown. FIG. 6 shows a schematic diagram of the cam extension during shortening of the packaging material piece to the smallest possible extent.

The device shown in Figure 1 for controlling packaging material supply supports packaging materials not shown here. A conveying member for candy, for example, comprising a bobbin for carrying and a pair of holding members. The packaging gear is located between the packaging gear and the packaging gear. and is not shown here as well.

The packaging material P comes from the bobbin and moves to the packaging material table 1 and the packaging material brake in the direction of the arrow. 2 to the device. The packaging material brake 2 is rotatably supported on a fixed shaft 4. It is placed on a two-armed lever 3. Lever 3 pivots on its free arm 10, and an elastic pull-out roller 5 is fixed to this shaft. this The pull-out roller 5 is fixed to the shaft 6 on the same plane as a steel roller. The drawn-out rollers 7 are in contact with each other. The packaging material table l has a drawer row. It is interrupted in the range of La 5 and 7. As can be seen from Figure 2, the pull-out roller 5 is separated. It is provided with a groove 8 and covered with an elastic covering 9. The pull-out rollers 5 and 7 are They are driven as shown in FIG. 2 and rotated synchronously in the direction of the arrow.

On the underside of the packaging material table I, a fixed counter-knife for cutting the packaging material pieces. A rotating knife 34 having 35 is provided.

While the pull-out roller 7 is mounted stationary, the pull-out roller 5 is supported by a spring 1. It is possible to pivot about the axis 4 against the tension of 1. For this purpose, pull A pull rod I2 is supported concentrically on the axis lO and centrally with respect to the length of the pull-out roller 5. and is arranged in the separation groove 13 at the center of the pull-out roller 5. pull rod 12 is adjustable in its length. The free end of the drawbar 12 has a shaft 15 It is supported on a pin 14 which is eccentrically arranged on the end face of. There is a holder on the shaft 15. 16 is fixed, and two A control member 17.17' is supported.

These control members 17, 17' are designed as two-armed levers, which In this case, each lever arm has a respective one pull fixed to the holder 16. Each of the tension magnets 19, 19' is connected to one oscillating armature 18, 18'. Ru.

Furthermore, two cam levers 20, 20' are supported on the shaft 15 so as to be freely pivotable. The cam lever 20.20' is connected to the rollers 21, 21' and the stopper 22.2. Supports 2'. The stop 22.22' is connected to the free lever of the control member 17.17'. – is operatively connected to the arm.

The cam lever 20, 20' is loaded by compression springs 23, 23'; As a result, the rollers 21, 21' abut against the cam disc of the cam packet 24. Kampake The cut 24 is fixed to a rotating shaft 25.

As can be seen in particular from FIGS. 3 and 4, the cam packets 24 are not just 180 degrees apart from each other. It consists of two congruent cam discs 26, 27 arranged side by side. That's it The cam discs 26, 27 each have one inner disc (cam disc half) 26'. , 27' and one outer disc (cam disc half) 26', 27' respectively. It has become.

The inner discs 26', 27' are connected to each other by a pin 2B and have a slot 2 It has 9. The outer discs 26', 27' are fixed by pins 30. , this bottle has an eccentrically configured flange 31, which flange It lies within the elongated hole 29 and is operatively connected to the inner discs 26', 27'. mosquito The discs 26 and 27 are tightened by a ring 33 with a slit through a screw 32. This tightening is done by tightening the ring itself to the shaft 25 via the screw 37. I'm being kicked. The cam disk halves 26', 26' or 27', 27' are The shape is the same and it can be assembled and fixed without replacing the cam. Ta However, in this case, the cam disks 26 and 27 are only offset by 180 degrees from each other. be. For perfect adjustment of saddle point 36, 36', screw 32 is loosened. and the bin 30 is rotated. The eccentric flange 31 allows the inner cam to The disc halves 26', 27' are rotated slightly relative to the outer cam disc halves 26', 27'. is rotated and is therefore shown as the saddle point of the cam extension of the cam disk 26.27. The intersection points 36, 36' can be lowered or raised. Inner cam disk half 2 6', 27' are always adjusted together, and the outer cam disk halves 26', 2 7' cannot change its position with respect to each other, so saddle point 36.3 The 6' changes are always of the same magnitude.

Changes in the extension of the cam and therefore the travel distance of the pull-out roller 5 can be summarized as shown in FIGS. 5 and 6. It can be seen from the figure. On the ordinate, the travel distance of the pull-out roller 5 is designated S. Yokoza The rotation angle φ of the shaft 25 is indicated in degrees on the mark.

A rotation angle φ of 180° is used to pull out a piece of packaging material of a given length.

The solid line shows the travel distance of the pull-out roller 5 caused by the cam disk 27. . This travel distance is approximately 0.6 mm.

The operation of the device will be explained below. The packaging material P is grabbed by the pull-out roller 5.7. and is supplied to the knife 34. Wrapping machine, pull-out roller 5, which rotates once every cycle. 7 and the rotational speed of the rotating knife 34 is such that the number of rotations of the rotating knife 34 is always the same in the normal rotation and the packaging material piece of the same length. are defined with respect to each other so that they are cut. The packaging is detected by a detection device (not shown). When it is confirmed that there is no candy between the pair of gear holding members, the tension is removed. The magnet 19 maintains the corresponding pulse. The swing movable element 18 is pulled and the control The member 17 is pivoted into the range of movement of the stop 22. As a result, the cam disk 26 and the pull rod 12 connected to the shaft 10 of the pull-out roller 5. be exposed. The shaft 15 is connected to the roller 21, the cam lever 20, and the stroke by the cam disk 26. It is slightly rotated via the capper 22, control member 17 and holder 16. like this The rotational motion is converted into an almost linear motion by the bin 14, which is eccentrically placed on the shaft. is transferred to the pull rod 12, which causes the pull-out roller 5 to pull out the packaging material. The packaging material brake 2 is lifted from the packaging material P and the packaging material table at the same time. It is crimped onto the loop. This interrupts the packaging material supply. This interruption is a strip The end of the wrapping material ends just before the range of motion of the knife 34, but then Since the end will be cut off, it must be done so that it does not enter this range of motion. stomach.

This perfect adjustment is achieved by tightening the cam packet 2 at the shaft 25 by means of a ring 33. This is achieved by 4 rotations. The packaging material brake 2 and the pull-out roller 5 rotate the shaft 4. Since it is placed on the two-arm-shaped Renoku 3 that can rotate around the center, the packaging material brake The braking action of key 2 occurs simultaneously with the lifting of pull-out roller 5. Next to packaging gear If there is no candy between the pair of holding members, the pull-out roller 5 will not be lifted. The function is carried out in the same manner by the cam disk 27. However, in this case, the pull-out roller 5 is lowered only slightly, as can be seen from FIGS. 5 and 6. The pull-out roller 5 is then pull it out for a short time until it is close enough to the packaging material P to guide the shredding again. It is possible to avoid getting stuck. On the other hand, the pull-out roller 5 pulls out the next required piece of packaging material. placed as close to the packaging material as possible to avoid shortening as much as possible .

As already mentioned, 2. The inner cam against the outer cam disk halves 26', 27' Adjustment is achieved by rotating the disk halves 26', 27'. drawer When the roller 5 is lowered by the dimension Δs min, chopping is reliably avoided, However, a significant shortening of the packaging material piece occurs. The pull-out roller 5 is up to the dimension ΔS maX When descending, no scraps will come out, and the shortening of the packaging material will be kept to a minimum. available.

This is perfect control. In this case, the pull-out roller 5 is approximately 0.6 mm. Since the overall travel distance of the drawer is maximally small, the packaging material drawer due to the elastic cover 9 Be sure to start before the pull-out roller 5 is completely lowered to the pull-out roller 7. It is intended.

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Claims (1)

[Claims] 1. A pair of pull-out rollers for feeding the strip packaging material to the cutting device, and between a control cam pair consisting of congruent cam discs arranged offset by a A cam disk and a and a transmission member between the pull-out roller pair. Control the packaging material supply in the candy packaging machine in relation to the filling degree of the member pairs In the device, each of the cam disks (26, 27) is connected to the inner cam disk half. (26', 27') and the outer cam disk half (26', 27'). It is configured as a compact and compact cam packet (24), and has both The cam disk halves (26', 27') located inside the cam disks (26, 27) and the outer cam disc halves (26'', 27'') are fixed to each other. and a saddle formed between the cam discs (26, 27). Cam disc halves (26, 36') located inside for adjusting points (36, 36') ', 27') are opposite to the outer cam disk halves (26'', 27''). The packaging material supply in the candy packaging machine is characterized by being rotatable in opposite directions. A device that controls supply. 2. As a transmission member, the tension can be directly controlled by the cam discs (26, 27). A rod (12) is provided, which pull rod lifts the pull-out roller (5). In order to extending approximately at right angles and through the axis of rotation of the pull-out roller (5), in this case the pull-out roller (5). The tension rod (12) is placed approximately in the center of the draw-out roller (5) with respect to its width. characterized in that it is radially connected to the pull-out roller so as to act on the pull-out roller. A device according to claim 1. 3. The cam discs (26, 27) each have a cam roller (21, 21'). Cam levers (20, 20') are provided, and each cam roller ( 21 or 21') rolls along the respective cam disc (26 or 27) and both cam disk halves (26', 26'') of the cam disks (26, 27). (27', 27'') Apparatus according to paragraph 2. 4. The cam lever (20, 20') is provided with a stopper (22, 22') and It is rotatably supported on the shaft (15), and further a holder (16) is mounted on the shaft (15). This holder is fixed at its free end and can be pivoted within the range of motion of the stopper. Claim 3 characterized in that the control member (17, 17') has a The device described in. 5. The shaft (15) has a pin (14) eccentrically arranged on the end face side, and this A pull rod (12) is arranged on the pin, which pull rod on the one hand (14) and on the other hand concentrically to the axis (10) of the drawer roller (5). Claim 4, characterized in that it is supported in the center of the width of the roller (5). The device described. 6. The control member (17, 17') is a pivotable two-armed lever; - one lever arm of the pull magnet (19, 19') The other lever arm is connected to the mover (18, 18') and the other lever arm is connected to the stopper. (22, 22') can be configured as a locking lever that can be pivoted within the range of motion. The device according to claim 4 or 5, characterized in that: 7. Claim 1, characterized in that the stop (22, 22') is adjustable. The device according to any one of items 4 to 6. 8. The cam discs (26, 27) are mounted on the shaft (25) with an adjustable clamping ring ( 33) Claims 1 to 7 are characterized in that they are separably combined with The device according to any one of the preceding paragraphs. 9. The inner cam disc halves (26', 27') have elongated holes (29). A pin (30) is provided with an eccentric flange (31), which the outer cam disc halves (26'', 27'') with the tightening ring (3). 3) and is rotatable from the outside, and the eccentric flange of the pin ( 31) is present in the elongated hole (29). Apparatus according to any one of clauses up to clause 7.