Device and method for joining a multi-component tampon applicator

Abstract

The invention relates to a device for joining a multi-component tampon applicator, in particular a three-component tampon applicator, the multi-component tampon applicator comprising at least one outer cylinder (101) and a first inner cylinder (102). The device comprises: at least one joining station having at least one receiving finger for receiving one outer cylinder and one first inner cylinder (102), respectively; and a first inner cylinder feeder for loading the at least one receiving finger with at least one first inner cylinder; and an outer cylinder feeder for loading the at least one receiving finger (13.1, 13.2) with at least one outer cylinder (101). The device further comprises a processing station (16) for joining the at least one outer cylinder to the at least one first inner cylinder (102), the at least one joining station being arranged radially on a disc, in particular in such a way that the at least one receiving finger is oriented essentially radially. The invention also relates to a method for joining a multi-component, in particular a three-component tampon applicator.

Description

Technical Field

[0001] The present invention relates to a device for joining a multi-component tampon applicator and a method for joining a multi-component tampon applicator, both in particular a three-component tampon applicator. Background Art

[0002] A tampon applicator is an insertion aid for a tampon. In its simplest embodiment, the tampon applicator is a cylindrical tube in which the tampon is placed. The tampon applicator has a distal opening through which the tampon pops out after it has been placed in the body orifice. For this purpose, the tampon applicator is usually equipped with a corresponding plunger. In the simplest embodiment, this plunger can also be designed as a tubular cylinder, in this case an inner cylinder.

[0003] This two-part tampon applicator may further be equipped with a pull-out mechanism. In such (usually two-part) embodiments, the inner cylinder is initially substantially located within the outer cylinder and in some cases may initially accommodate the tampon. In operation, the inner cylinder is first pulled through the proximal opening of the outer cylinder until the pre-tensioned mechanical gripping device engages with the tampon. Typically, a stopper is provided at the proximal end of the outer cylinder so that the inner cylinder cannot be pulled out too far. If this engagement creates a grip connection between the inner cylinder and the tampon, then again pressurizing the inner cylinder into the outer cylinder may displace the tampon from the outer cylinder and release the tampon through the opening into the body orifice.

[0004] In most cases, tampon applicators are made of plastic material and have a gripping area at a suitable location, for example in the proximal region of the outer cylinder. Improved gripping properties can be ensured by roughening, rubberizing, special structuring or recessed gripping of the material.

[0005] Besides two parts, three-part or even multi-part design tampon applicators can also construct the plunger at least partially telescopically, for example by providing a plurality of inner cylinders that are initially displaceable relative to each other on bearings and become rigid plungers after mutual engagement.

[0006] All these telescopic designs of the tampon applicator serve in particular to make the tampon and the tampon applicator as a whole more compact.

[0007] In order to provide a tampon applicator that has a suitable gripping area and is as compact as possible, three-piece tampon applicators have proven to be particularly useful. These tampon applicators essentially include three tubular cylinders. The outer cylinder has a tapered head portion that ends at a distal opening through which the tampon is ejected during operation. The proximal portion of the outer cylinder has a gripping groove or other tapered portion that facilitates the retention of the tampon applicator, especially when the tampon is ejected, that is, the plunger is used to eject the tampon from the cylinder. The plunger is generally accommodated in two parts, wherein the first inner cylinder is supported in the outer cylinder under storage conditions and accommodates the second inner cylinder. In order to transfer the tampon applicator from the storage state to the ready-to-use state, the second inner cylinder, preferably having a gripping area, is pulled until it extends from the first inner cylinder and engages with the first inner cylinder, for example, by forming corresponding grooves and / or flanges on the first and / or second inner cylinders. Finally, the second cylinder is also pulled a little distance out of the gripping area of ​​the outer cylinder and into operative connection with the tampon, so that reinsertion of the now latched plunger from the two inner cylinders causes displacement of the tampon and presses it out of the opening area of ​​the outer cylinder into the body orifice.

[0008] For joining the parts, it is advantageous if initially certain structures are guided into each other without friction, ie without having to overcome mechanical resistance. This is followed by thermoplastic deformation, which completes the joining process and joins the individual applicator parts together in a longitudinally displaceable manner.

[0009] A decisive factor in manufacturing tampon applicators is to produce them as efficiently as possible while maintaining the consistently high quality expected of this hygiene product.

[0010] Therefore, there is a need for devices and machines suitable for engaging such multi-component tampon applicators so that they can subsequently be fitted with appropriate tampons and supplied for packaging.

[0011] Basically, such devices are linear joining lines in which the different components are joined together in steps. However, this has proven to be disadvantageous because the space requirements are relatively high and monitoring the process to ensure quality is cumbersome. Summary of the invention

[0012] The object of the present invention is to provide a device with which at least one of the known disadvantages is overcome.A particular object of the present invention is to provide a device of the type mentioned at the outset with which a large number of workpieces can be joined to a tampon applicator while maintaining a constant quality.

[0013] This object is achieved with a device and a corresponding method according to the invention for joining a multi-component tampon applicator, in particular a three-component tampon applicator.

[0014] One aspect of the present invention relates to a device for joining a multi-component tampon applicator, in particular a three-component tampon applicator. The multi-component tampon applicator comprises an outer cylinder and a first inner cylinder. The device comprises at least one joining station having at least one receiving finger for receiving one outer cylinder and one first inner cylinder respectively. The device according to the present invention further comprises a first inner cylinder supplier for loading at least one first inner cylinder to the at least one receiving finger. The device further comprises an outer cylinder supplier for loading at least one outer cylinder to the at least one receiving finger. The first processing station is used to join the at least one outer cylinder to the at least one first inner cylinder. The at least one joining station is radially arranged on the disc. In particular, the at least one joining station is arranged on the disc so that the at least one receiving finger is substantially radially oriented.

[0015] For the purposes of the present invention, a multi-component tampon applicator is to be understood as a tampon applicator of the type mentioned at the outset. This applicator essentially comprises an outer cylinder, which in operation constitutes the distal end of the tampon applicator and has an opening as its distal end, through which the tampon emerges. Furthermore, in the present example, this tampon applicator comprises at least a first inner cylinder, which has a diameter that is smaller than the inner diameter of the first outer cylinder, so that it is supported and can be moved in the longitudinal direction of the tampon applicator. Particularly preferably, the first inner cylinder is guided in the longitudinal direction during its translational movement. This can be done, for example, by means of a further cylinder, in the present example by means of the outer cylinder.

[0016] The outer cylinder according to the present invention may be equipped with any other structure. For example, the outer cylinder may have a petal-shaped structure in the distal opening area that allows the distal opening area to be closed. In addition, the outer cylinder may be provided with a knob, a rubber lining, a rough portion, a dent or other recessed grip that facilitates the handling of the outer cylinder and the tampon applicator as a whole. In the present example, the tampon applicator according to the present invention may have an outer cylinder that is tapered at the proximal end. This tapered area may be provided with a specified structure to facilitate gripping. In operation, the tampon applicator will be gripped, inserted, and the ejection of the tampon will be caused by actuating the first and / or second inner cylinder by displacement of the first and / or second inner cylinder along the longitudinal axis of the tampon applicator, in particular by actuating the first and / or second inner cylinder by the petal-shaped elements at the distal opening.

[0017] For the purposes of the present invention, engagement occurs when the parts have stops relative to each other in two directions of translational movement, preferably along the longitudinal axis. This can be accomplished, for example, by means of flanges, grooves and / or ribs that prevent the parts from moving beyond a certain locking point. This engagement can mean the formation of a certain latching point, for example, where the individual parts can enter into a rigid operative connection with each other. For example, a three-part tampon applicator can be envisioned, which includes an outer cylinder, a first inner cylinder and a second inner cylinder. The outer cylinder has an outer diameter greater than the first inner cylinder and the second inner cylinder has an outer diameter less than the first inner cylinder. In general, both the second and first inner cylinders are smaller in diameter than the first outer cylinder, so that they can slide into the outer cylinder. In this embodiment, the first and second outer cylinders form a telescopic plunger for ejecting the tampon from the outer cylinder. For this purpose, in a first step, the second outer cylinder is pulled out of the first inner cylinder in a proximal direction until it is substantially rigid via a snap connection with the first inner cylinder. Furthermore, the first inner cylinder is pulled out of the outer cylinder until its distal end is in operative contact with the distal end of the tampon. If the entire plunger is now pushed back into the outer cylinder, this active connection generates pressure on the distal end of the tampon and pushes the tampon out of the first outer cylinder through the opening at the distal end of the first outer cylinder and into the body orifice.

[0018] If all three parts can carry out the above-mentioned translational movement, but prevent the second inner cylinder from falling out of the first inner cylinder or prevent the first inner cylinder from falling out of the outer cylinder, then there will be a joint in the sense of the present invention in this three-part tampon applicator. For this purpose, a stop can be arranged in the inner circumference of the outer cylinder or the first inner cylinder. In addition, a corresponding flange can be arranged in the outer circumference of the first inner cylinder and the second inner cylinder, which flange is operatively connected to this stop. The concentrically arranged cylinders can be moved translationally relative to each other, but will not fall apart. This tampon applicator will be the product of a corresponding device according to the present invention. This tampon applicator will be able to be loaded with tampons in the further course of the process. In a specific embodiment, this joint in the sense of the present invention will be obtained, for example, by means of a conical expansion of the proximal end of the second inner cylinder.

[0019] For the purposes of the present invention, the terms distal and proximal will be understood with respect to the user's application. In this particular case, for example, the proximal end will be the end facing the user's hand. The distal end will be the end facing the body orifice in use.

[0020] In a particular embodiment, at least one engagement station is radially arranged on the disc in such a way that the processing circumference can be moved away from the disc during operation by rotating the disc around its circular center. Particularly preferably, the first inner cylinder feeder, the outer cylinder feeder and the first processing station are also radially arranged on the outside of the processing circumference.

[0021] In the sense of the invention, there is a radial orientation, or at least one receiving finger is oriented substantially radially, for example if the respective outer finger is arranged substantially parallel to a radius of the disk with respect to its longitudinal extension.

[0022] By means of the device according to the invention, the engagement of multi-component tampon applicators can be carried out efficiently by means of a rotatable disk which presents the engagement stations with corresponding receiving fingers to the supply and the individual processing stations respectively, and an ejector, so that an operational connection can be established between these and the engagement stations. Due to the circular design, the entire device is space-saving and can be operated in large quantities.

[0023] In a particular embodiment, a plurality of engagement stations are arranged radially on the disk. Particularly preferably, the engagement stations are arranged essentially radially symmetrically on the disk, so that imbalances are largely avoided when the disk rotates.

[0024] In another particular embodiment, the joining station according to the invention comprises a plurality of receiving fingers.Thus, the device according to the invention can join in batches by simultaneously allocating a batch of tampon applicators to a processing station depending on the number of receiving fingers on the joining station.

[0025] In a specific embodiment, the multi-component tampon applicator comprises a second inner cylinder. The apparatus then further comprises a second inner cylinder supplier for loading the at least one receiving finger with at least one second inner cylinder. Additionally, the apparatus further comprises a second processing station for joining the at least one first inner cylinder to the at least one second inner cylinder. In this embodiment, the apparatus is used to join a three-component tampon applicator.

[0026] In certain embodiments, the first processing station is configured to reshape the first or second inner cylinder.

[0027] In certain embodiments, the second processing station is configured to shape the first or second inner cylinder.

[0028] In a particular embodiment, the present invention comprises a plurality of processing stations each adapted to always shape the proximal inner cylinder. In the example of a three-component tampon applicator, it will always be the second inner cylinder that will be shaped. In a further embodiment, each processing station may be configured to shape the second inner cylinder to a predetermined size. In this way, reshaping of the second inner cylinder may be performed gently, resulting in better reshaping.

[0029] In a particular embodiment, the processing station is configured to perform conical expansion as a forming operation.

[0030] In a particular embodiment, the at least one receiving finger comprises a plurality of diameters. In particular, the receiving finger has a diameter that tapers in a radial direction.

[0031] In a particular embodiment, each diameter is configured to receive the outer cylinder, the first inner cylinder, and / or the second inner cylinder, respectively.

[0032] Correspondingly, from inside to outside, ie in radial direction of the disc, these would be a first diameter adapted to accommodate an outer cylinder, a second diameter adapted to accommodate a first inner cylinder and a third diameter adapted to accommodate a second inner cylinder.

[0033] In the present case, all cylinders are designed as hollow cylinders containing an inner cavity. This inner cavity is filled substantially according to the diameter of the receiving finger when the receiving finger picks up the corresponding cylinder.

[0034] In operation, the receiving fingers will be loaded from the inside out, i.e., for example in the case of a three-part tampon applicator, the second inner cylinder will first be applied to the smallest diameter of the receiving fingers. Subsequently, the first inner cylinder will be slid over this second inner cylinder and guided in a direction opposite to the radial direction over the corresponding intermediate diameter of the receiving fingers. Finally, the outer cylinder will be slid over both inner cylinders to the corresponding diameter of the receiving fingers.

[0035] In certain embodiments, the receiving fingers have a plurality of shoulders that act as stops to define the proper diameter to receive the barrel.

[0036] In another particular embodiment, the receiving finger has a tapered tip. For example, this tip can have a tapered design to make it easier to accommodate and guide the cylinder.

[0037] In a particular embodiment, the diameters are mutually limited by a shoulder as a stop, the shoulder merging into a tapered cone merging into a smaller diameter.

[0038] The length of the receiving fingers in various diameter ranges is between one third and 80% of the length of the corresponding second inner cylinder.

[0039] In a particular embodiment, the receiving fingers are configured such that the second inner cylinder expands when it is placed on the receiving fingers.

[0040] In another particular embodiment, the receiving fingers are configured such that the second inner cylinder is held on the receiving fingers by means of static friction.

[0041] Particularly preferably, the second inner cylinder has an outer flange which comes into bearing mounting engagement with the first inner cylinder when the first inner cylinder is slid over the second inner cylinder onto the receiving fingers.

[0042] In a particular embodiment, the receiving finger is designed to be heatable. Particularly preferably, the receiving finger can be heated to a temperature that allows the material of the applicator part to be shaped. In particular, the receiving finger can adopt a temperature between 80° and 180°, thus allowing the applicator part to be shaped when the applicator part is assembled and external pressure is applied. A processing station that applies this external pressure is particularly preferred.

[0043] In an alternative and / or complementary embodiment, the applicator parts are joined without forming. For this purpose, the applicator parts, in particular the outer cylinder and the first inner cylinder, can be equipped with a snap mechanism that enables a purely mechanical joining. In this embodiment, the processing station can be configured to apply, for example, a power to the proximal ends of the cylinders, in particular a power by which the outer cylinder and the first inner cylinder and / or the first inner cylinder and the second inner cylinder can form a snap connection. This device may be particularly suitable for joining applicators that are essentially made of non-thermoplastic materials, for example comprising or made of cardboard.

[0044] In an alternative and / or complementary embodiment, the processing station or stations are designed to set a corresponding temperature range between 80 and 180 degrees Celsius and perform a corresponding forming operation. For example, a technician can set the temperature range depending on the material properties of the inner cylinder to be formed.

[0045] In a particular embodiment, the at least one receiving finger comprises at least one clamping mandrel for holding the outer cylinder and / or the first inner cylinder.

[0046] In particular, the clamping mandrel may be shaped under a retaining force acting on the corresponding cylinder to hold it in position. Particularly preferably, the clamping mandrel is movable and is designed to pivot about an axis on the receiving finger or is spring-loaded.

[0047] For example, the clamping mandrel may be configured to fold when receiving a cylinder so that the clamping mandrel does not provide resistance to receiving the cylinder. Once the cylinder is picked up, the mandrel may act on the cylinder and hold the cylinder in place, for example, via a spring-loaded retention force.

[0048] In this particular embodiment, the clamping mandrel can be reactivated for ejection so that it collapses and is substantially flush with the receiving fingers so that peeling of the finished engaged tampon applicator is not impeded.

[0049] In an alternative or complementary embodiment, the clamping mandrel is designed to secure the support of the loaded cylinder under a restoring force.

[0050] In a particular embodiment, the first processing station and / or the second processing station are configured to shape the outer cylinder received on the receiving finger, the first inner cylinder and / or the second inner cylinder. Particularly preferably, this shaping is thermoforming. Most preferably, the thermoplastic material is softened by supplying heat so that a melting process has not yet occurred, but the material as a whole can be more easily shaped.

[0051] In a particular embodiment, the device comprises a plurality of joining stations, in particular between two and 24 joining stations.

[0052] By means of a plurality of joining stations, batch processing of a plurality of batches can be carried out simultaneously. For example, one batch can be loaded while another batch is already formed. Particularly preferably, the number of joining stations corresponds to the maximum geometrically possible processing stations and feeders. It is also conceivable to provide individual joining stations as a backup. Furthermore, individual joining stations may not have a corresponding processing station in the opposite side if, for example, cooling is to be carried out. For example, after a hot forming operation, if cooling of the previously formed parts must be carried out instead, the joining station may initially not have a corresponding processing station and / or feeder as a counterpart after the disc rotation.

[0053] In a particular embodiment, the feeder and / or the processing station is constructed radially around the disc so that it occupies an angular area by being arranged opposite to the joining station. Particularly preferably, the feeder or the processing station is provided with a feed element or a processing element, which is arranged on the joining station essentially concentrically with the receiving finger within the same angular range. For example, the feeder can guide the cylinder to be mounted to the receiving finger in a number of paths equal to the number of receiving fingers. This allows all the receiving fingers of the joining station to be loaded in parallel and simultaneously. Alternatively and / or in addition, the receiving fingers of the joining station can also be loaded continuously, i.e., by loading the feeder of the receiving fingers one by one within its angular range. For this purpose, the feeder can be designed to rotate, for example so that a first device that is concentrically aligned with the receiving finger is followed by a rotational movement that requires a re-concentric alignment relative to the second receiving finger.

[0054] In a particularly preferred embodiment, the device comprises between two and twenty-four joining stations, in particular between four and twenty, most preferably twelve joining stations.

[0055] In another particular embodiment, each engagement station has a plurality of receiving fingers each for receiving the outer cylinder of the first inner cylinder and possibly the second inner cylinder.

[0056] Particularly preferably, each joining station has a number of between two and 16 receiving fingers, further particularly preferably between four and eight receiving fingers, most preferably four receiving fingers.

[0057] In a particular embodiment, a feeder or a processing station located on said processing station corresponds to said several receiving fingers and is aligned in such a way that these are arranged concentrically with said receiving fingers when said engagement station is operatively connected with said processing station or said feeder within a corresponding angular range.

[0058] In a particular embodiment, the processing station is designed as a pressurizing knob that uses pressure and heat to reshape the inner cylinder correspondingly received on the receiving fingers. Particularly preferably, the pressurizing knob has a substantially conical flare that is pushed into the proximal end of the inner cylinder for shaping.

[0059] In a particular embodiment, the feeder comprises at least one separation unit. The separation unit can be used to transfer the corresponding cylinders to the device in a manner that is as orderly as possible. The device can load the appropriate cylinders onto the receiving fingers as elements of the feeder. The separation can be achieved in different ways. For example, a vibrating hopper and appropriate belts or belt guides can be used to allow proper alignment of the cylinders.

[0060] In a particular embodiment, the feeder has slides adapted to load the cylinder onto the receiving fingers. These slides can be designed as plungers that press the cylinder onto the receiving fingers. The slides can also be designed as grippers that grasp the circumference of the cylinder and slide the cylinder over the receiving fingers.

[0061] For example, if the cylinder has a flange, the flange can be used to align the cylinder accordingly. In this example, for example, the belt drive will be such that the cylinder will extend substantially through the belts and be held in place by the flange between the belts. The flange rests on two spaced apart belts. The belt spacing essentially corresponds to the outer diameter of the cylinder.

[0062] For cylinders without flanges, such as outer cylinders, alternative sorters can be used to separate the corresponding cylinders. These cylinders can also be guided with spaced belts. However, the belt spacing here does not correspond to the outer diameter of the cylinders, but is slightly smaller, so that the cylinders rest on the belts. The separation can be carried out, for example, by means of rollers. Thus, a transition zone can be defined in which the cylinders are conveyed at two different speeds, particularly preferably in which the cylinders are accelerated from a first speed to a second speed in the transition zone. This acceleration causes any interconnected outer cylinders to separate by accelerating the first cylinder in contact with the new speed away from the next cylinder in the conveying direction.

[0063] Particularly preferably, the supply device comprises a belt system which is driven by rollers and conveys the cylinders in the direction of the equipment element. As pressure rollers, these rollers can also be operated at different speeds so that the cylinders can be separated.

[0064] A person skilled in the art may find a suitable conveyor system using a belt to convey the applicator in WO2019 / 233989.

[0065] In a particular embodiment, the dispenser according to the invention further comprises an alignment unit. For example, the alignment unit can correctly align cylinders with different types of ends, such as an outer cylinder with a petal-shaped opening and a gripping area for loading. Particularly preferably, the alignment is detected by an optical sensor.

[0066] In a particular embodiment, the alignment unit comprises a robot, in particular a multi-axis robot as the alignment unit.

[0067] In a further particular embodiment, the alignment unit comprises a robot which aligns the supplied outer cylinder in each case in such a way that the opening points in a direction opposite to the radial extent of the receiving fingers, i.e. the opening is rotated upwards onto the receiving fingers and the distal end of the tampon applicator moves first onto the receiving fingers.

[0068] In a particular embodiment, the disc is rotatable so that the engagement station can be brought into operative connection with the radially arranged inner drum feeder, outer drum feeder, first and / or second processing station.

[0069] In addition to the described belts, in alternative or supplementary embodiments, a belt drive with corresponding guide rails can also be used to guide the cylinder.

[0070] In a particular embodiment, the processing station is integral with the feeder. In this embodiment, shaping occurs simultaneously with the fitting of the corresponding cylinder to the receiving finger. For example, the second inner cylinder may be applied to the receiving finger first. Subsequently, the first inner cylinder is slid over this second inner cylinder and applied to the receiving finger, and the proximal end of the second receiving finger is heated simultaneously, so that a stop is created that prevents the first inner cylinder from falling out of the second inner cylinder again. Similarly, shaping may occur simultaneously with the loading of each cylinder, so that the joining and loading occur simultaneously.

[0071] In another specific embodiment, the loading is carried out via an appropriate feeder and only one processing station performs all the forming steps in a single process. For example, the receiving fingers can be loaded in such a way that no force is applied to the individual cylinders. After all cylinders are applied to the receiving fingers, pressure is applied in a single step by supplying heat, which reshapes the corresponding cylinder parts to be formed and completes the joining.

[0072] The device according to the invention can be used to quickly and efficiently join multi-component tampon applicators in batches, which can be achieved in a space-saving and efficient manner.

[0073] The device according to the invention is particularly suitable for engaging telescopic three-part tampon applicators. As described above, these tampon applicators have an outer cylinder that accommodates the tampon and has an opening through which the tampon is ejected into the body orifice. In addition, these preferably have a gripping area proximal to the outer cylinder and forming a tapered area. This area can preferably be used as a bearing for guiding the first inner cylinder, which is almost completely accommodated in this gripping area in the packaged state. This inner cylinder accommodates the second inner cylinder, which is a bearing guided by this inner cylinder in a similar manner. When the second inner cylinder extends out of the first inner cylinder, the snap mechanism at the proximal end of the first inner cylinder causes the second inner cylinder to snap rigidly with the second inner cylinder. If the resulting plungers from the two inner cylinders are now pressurized into the outer cylinder again, the tampon is released into the body orifice through the opening.

[0074] Another aspect of the invention relates to a method for joining a multi-component tampon applicator, in particular a three-component tampon applicator as described at the beginning. The method comprises a step of aligning a joining station with a first inner cylinder supplier. For example, in the sense of the invention and taking into account the device described above, alignment may mean that the joining station enters a corner area of ​​the supplier and aligns itself substantially with this supplier so that an operational connection can be established between the supplier and the joining station. The method according to the invention further comprises a step of loading a first inner cylinder onto a first receiving finger of the joining station. This device can be implemented batch by batch, that is, any number of receiving fingers of the joining station can be loaded with inner cylinders simultaneously, or it can also be implemented continuously, wherein the receiving fingers are moved away from the device station and the receiving fingers are provided with inner cylinders one after another.

[0075] The method according to the invention then comprises the further step of aligning the joining station with the outer cylinder feeder or the second inner cylinder feeder. The latter is the case, for example, with a three-part tampon applicator, in which first the other inner cylinder is applied, which can be correspondingly mounted, for example, in the gripping area of ​​the outer cylinder as described above.

[0076] The alignment of the engagement stations radially arranged on the disc is performed by a circular rotation of the disc. For example, this may mean that the disc rotates around its center within a certain angular range. Preferably, this rotation is timed. Alternatively and / or in addition, this rotation may also be continuous, as long as the control of the corresponding processing station is adapted, for example by synchronization with the rotation of the disc. Even in the case of continuous rotation, there is a point in time when the processing station or the feeder is aligned concentrically with the corresponding receiving finger. At this point, the corresponding processing or loading can be carried out.

[0077] Particularly preferably, the alignment of the engagement stations arranged radially on the disc is effected in such a way that the receiving fingers are operatively connected coaxially with the inner cylinder feeder and / or the outer cylinder feeder and / or the processing station.

[0078] Particularly preferably, this takes place simultaneously for each of the plurality of engagement stations. That is, while one engagement station is aligning its receiving finger concentrically with the first supply, another engagement station is aligning its receiving finger concentrically with respect to the second supply. In this way, for example, a receiving finger already loaded with a second inner cylinder can be loaded with a first inner cylinder simultaneously with a receiving finger that is empty and ready to receive the first inner cylinder again.

[0079] In a particular embodiment, the method according to the invention further comprises aligning the engagement station with the processing station. This processing station is preferably a shaping station. Therefore, the method further comprises the step of shaping the first inner cylinder and / or the second inner cylinder by applying heat and pressure. As described, these steps can be performed synchronously. Particularly preferably, the processing station comprises a processing station operatively connected to the inner cylinder on the receiving finger, such as a pressurizing knob.

[0080] In a particular embodiment, when loading the engagement station, the inner cylinder with the smallest diameter of the multi-component tampon applicator is first loaded onto the first receiving finger. Specifically, the inner cylinder with the smallest diameter is first fitted to the tip region with the smallest diameter of the receiving finger.

[0081] In another particular embodiment of the method according to the invention, the outer cylinder is clamped on the receiving finger by means of a clamping mandrel applying a restoring force. Particularly preferably, the outer cylinder is detachably clamped.

[0082] In a further specific embodiment, this release can be actuated by the control of a pivot point mounted on the receiving finger. For this purpose, for example, the clamping mandrel is flush with the receiving finger against the restoring force so that the receiving finger does not offer any resistance to the ejection of the finished tampon applicator.

[0083] In an alternative embodiment, the receiving cylinder is applied to the receiving fingers against the restoring force of the clamping spindle, so that when the catch is released, this restoring force produces the ejection of the finished tampon applicator.

[0084] It goes without saying to those skilled in the art that all the above-mentioned embodiments can appear in any combination with each other in the implementation according to the present invention, as long as they are not mutually exclusive.

[0085] Hereinafter, the present invention will be explained in more detail with reference to specific examples and drawings, but is not limited thereto.

[0086] A person skilled in the art can infer from these examples further advantageous embodiments for the design of the invention.

[0087] The drawings are schematic and, for simplicity, identical parts have been given the same reference numerals. BRIEF DESCRIPTION OF THE DRAWINGS

[0088] exhibit:

[0089] Figure 1a It is a disc with multiple engagement stations;

[0090] Figure 1b yes Figure 1a The plan view of the disk;

[0091] Figure 2a is an example of an engagement station aligned with a processing station;

[0092] Figure 2b yes Figure 2a A detailed view of an aligned bonding station;

[0093] Figure 2c yes Figure 2a A top view of a joining station in FIG.

[0094] Figure 3 is a front view of a joining station according to the present invention;

[0095] Figure 4a is a cross-sectional view of a receiving finger;

[0096] Figure 4b It is equipped with two inner cylinders Figure 4a a receiving finger;

[0097] Figure 4c is loaded with all the components of the three-component tampon applicator Figure 4a a receiving finger;

[0098] Figure 5 It is a separation unit;

[0099] Figure 6 is the alignment unit, and

[0100] Figure 7 It is a processing station. DETAILED DESCRIPTION

[0101] Figure 1aSchematically show the disc 11. The disc 11 is designed as an annular disc and is the central element of the device according to the present invention. In the present example, the disc 11 has a plurality of engagement stations 12. Specifically, in this example, there are twelve engagement stations 12. The engagement stations 12 are essentially arranged radially on the disc 11 along the outer circumference of the disc 11. In the present example, the disc 11 shows a central groove, but this is not necessary. Preferably, the disc 11 is rotatably driven. For example, this can be done by means of a gear (not shown) on the lower side of the disc 11. It will also be conceivable to drive by means of a belt, an electric drive or a circular motor, wherein there is a corresponding active connection between the shaft and the disc 11.

[0102] The joining station 12 has a plurality of receiving fingers. In the present example, the joining station 12 has a total of four receiving fingers 13.1, 13.2. The receiving fingers 13.1, 13.2 extend radially from the center of the disk from its outer circumference in essence. In this way, the joining station 12 and the corresponding receiving fingers 13.1, 13.2 can be operatively connected to a processing station or a supply unit which is also radially arranged on the outside of the circumference. The technician can adapt the corresponding equipment, that is, the number of the joining stations and the corresponding number of receiving fingers to the geometric conditions and the corresponding available supply or processing station. In the present example, the receiving fingers are all basically arranged on one plane. However, it is also conceivable to have a joining station with vertically offset receiving fingers or even staggered receiving fingers. For example, such a joining station can be constructed in a layer-by-layer manner to have a certain number of receiving fingers on one level.

[0103] exist Figure 1b In, according to Figure 1a The station element 10 is shown in a top view. The disc 11 has a central recess 14, which is mainly used to reduce the moving mass. A total of twelve engagement stations 12 are installed on the disc 11, including an engagement block 12.1, and four receiving fingers 13.1, 13.2 protrude from the engagement block 12.1 to the outer circumference of the disc 11 into the processing area. For example, in this processing area, feeders and processing stations can intervene. These feeders and processing stations can perform single or multiple operations on the cylinders first fixed on the receiving fingers. The processing steps may include further loading, forming, embossing, dipping, coating, perforating and / or ejecting the cylinder. Due to the fact that the processing is carried out according to the radius, this station 10 can be used in a space-saving manner. A robot can optionally intervene in the area of ​​the disc 11 to perform any necessary operations at the engagement station. In the processing area, that is, directly at the outer circumference of the disc 11, a drop-through can be provided, for example, where a cylinder or tampon applicator found to be defective can be collected and discharged after successful ejection. Alternatively, this area can also be used to receive the finished tampon applicator which is peeled off from the receiving finger after the engagement is completed.

[0104] The compact design allows the optical sensor to measure the entire processing area. This means that the working steps can be monitored at all times and intervention can be made early in the event of any malfunction. Optical sensors can also be used at several points to monitor individual processing steps in detail. For example, the final forming action can be monitored using an optical sensor. For example, it can be checked within a batch whether there are incorrectly formed tampon applicators and sorted out accordingly.

[0105] exist Figure 2a , for simplicity, a disc 11 with a single engagement station 12 is shown. Four receiving fingers protrude from this engagement station 12 into the processing area. This engagement station 12 has been moved into the angular range and is therefore operatively connected to a processing station 16. The processing station 16 has a plurality of presses 17 aligned concentrically with the receiving fingers. The presses 17 can be oriented, for example, to cause the proximal end of the tampon applicator to be formed. The second inner cylinder, which is correspondingly fitted to the outermost and smallest diameter of the receiving fingers 13, can be widened and reshaped proximally, for example, by means of the corresponding mating shape of the pressurizing knob 17, so that a natural stopper is produced. The presses 17 are mounted on a processing plate 15 and rest on a plate 18. The plate 18 is arranged to move against the radius of the disc 11. Alternatively, the engagement station can also move in a radial direction against the corresponding processing station.

[0106] Figure 2b This arrangement is shown again in more detail. Two engagement stations 12 are shown on the disc 11, said engagement stations having a plurality, in the present example, a total of four receiving fingers 13. Opposite these, which are oriented concentrically and substantially parallel to the radial extension A of the disc 11, a pressing knob 17 is arranged on a processing plate 15 of a processing station 16. This processing plate 15 is movable so that it can be moved against the radial extension A towards the receiving fingers 13 and accordingly impart a forming action on the loaded cylinder.

[0107] exist Figure 2c In FIG. 1 , this device is shown in a plan view, wherein a disk 11 has the mentioned guide station 12 with four radially extending receiving fingers 13. The longitudinal direction of the receiving fingers is concentric with a pressure knob 17 on a handling plate 15. The handling plate 15 is mounted on guides so that it can be displaced on a locking plate 18 in the direction of the receiving fingers to generate a contact pressure on the receiving fingers.

[0108] Figure 3The corresponding joining station 12 is shown in detail. The joining station 12 here has four sleeves 12.2, from each of which a receiving finger 13 protrudes. The receiving finger 13 has a plurality of diameters 31, 32, 33. In general, starting from the sleeve, the finger 13 has a first diameter 33. Two clamping mandrels 35, 34 are arranged on this first diameter. This first diameter 33 is suitable for accommodating an outer cylinder. The two clamping mandrels 33, 34 serve to retain this outer cylinder by means of a restoring force. In operation, the outer cylinder in this example will be the last cylinder applied to the receiving finger.

[0109] This first diameter is followed by a second diameter 32 which is smaller than the inner diameter of the first inner cylinder. In operation, this first inner cylinder will be the second cylinder applied in the present example, which refers to a three-component tampon applicator.

[0110] Directly adjacent to this second diameter is a third diameter which tapers over a shoulder and terminates in a tip 36. This last diameter 31 is adapted to accommodate a second inner cylinder.

[0111] In operation, the second outer cylinder will first be slid onto this last diameter 31. Passing through the tapered zone, starting from the central diameter 32, the second inner cylinder is substantially releasably clamped to the receiving fingers.

[0112] To illustrate this mode of operation, Figures 4a to 4c Show this step-by-step loading. Figure 4a A cross-section of the receiving finger 13 is shown. On the left side of the sleeve 12.2, the engagement station will start. A first diameter 33 protrudes from the sleeve 12.2, which has two clamping mandrels 35, 34 formed as a bracket. The two clamping mandrels 35, 34 exert a restoring force on the receiving finger so that after picking up the outer cylinder, it is retained.

[0113] The first diameter 33 ends with a stop, followed by a second diameter 32. This second diameter 32 is followed by another stop and a tapered section into a third diameter 36. The receiving finger ends in a substantially tapered tip 31 .

[0114] exist Figure 4b In the embodiment of the invention, two inner cylinders 102, 103 have been applied to the receiving finger. The second inner cylinder 103 is first slid over the last diameter so that it abuts the stopper and is caught in the tapered area. The first inner cylinder 102 is slid over the last diameter, which extends substantially to the end of the second diameter.

[0115] Figure 4c It is now shown how the outer cylinder slides over the two inner cylinders 102 , 103 .

[0116] The clamping mandrels 35, 34 formed as brackets exert a restoring force on the outer cylinder 101. In this case, the clamping mandrel 35 formed as a first bracket part protrudes at an angle from the sleeve 12.2 and exerts a contact pressure on the outer cylinder 101. The clamping mandrel 34 formed as a second bracket part, which is integral with the clamping mandrel 35 formed as a first bracket part, also protrudes at an angle and serves as a deflection plate for receiving the outer cylinder 101.

[0117] Figure 5 A separation unit is shown which can be used to separate the outer cylinders for supply. It is important that the corresponding outer cylinders with petal-shaped distal openings are separated from each other, otherwise they may easily get caught and cannot be loaded onto the receiving fingers in an orderly manner.

[0118] In the present example, the cylinder 100 is conveyed on a belt 73. Drive rollers 74.1, 74.2 drive the corresponding belts. In the illustrated example, the transfer takes place from one belt system to another. Gluing acceleration rollers 75.1, 75.2 are arranged above this transfer point, which rollers are also driven by means of belt drives 77.1, 77.2. Here, the outer cylinder 100 is transferred from the drive with a first speed 70.1, 70.2 to the area with the drive with a second speed 75.1, 75.2. The acceleration separates any interlocking outer cylinders. The belts are driven by drive shafts 71, 76 running at different speeds.

[0119] Figure 6 The alignment unit for loading the receiving fingers with the outer cylinders 100 mentioned is also shown aligned in the same way. As mentioned above, the supply of the outer cylinders 100 is done by two parallel belt drive systems, each with two belts 73.1, 73.2; 74.3, 74.4. A robot with a robot arm 82 and a gripper 81 grips the outer cylinders 100 and transfers them to a conveyor 80, where they are substantially parallel and all oriented in the same way. The supply ends in a further robot system (not shown) which can, for example, remove a batch of outer cylinders from this conveyor unit 80 and load them accordingly onto the receiving fingers for loading.

[0120] Figure 7 It is shown how the joining station 12 with receiving fingers is now operatively connected to the processing station. The joining station 12 comprises an outer cylinder 101 on a sleeve 12.2 on a first diameter 33. A first inner cylinder 102 is inserted into this outer cylinder 101 and a second inner cylinder 103 is also inserted into this outer cylinder 101.

[0121] The outer cylinder 101 is held in position by means of a resilient clamping mandrel formed as a bracket having a clamping mandrel 35 formed as a first bracket part and a clamping mandrel 34 formed as a second bracket part.

[0122] The processing station comprises a pressurizing knob 50 formed concentrically with respect to the longitudinal axis of the receiving finger, which is pushed into the proximal end of the second inner cylinder, expanding the second inner cylinder by virtue of the conical shape so as to produce a generally flared proximal end of the second inner cylinder 103 .

[0123] This reshaping prevents the second inner cylinder 103 from falling out of the three-component tampon applicator, for example by being pushed through the opening of the outer cylinder 101. This step can complete the joining according to the invention. However, this joining can also be carried out by several individual sub-steps. For example, the first shaping can be carried out at a certain first contact pressure and the second shaping can be carried out at a certain second contact pressure. For each shaping operation, a separate processing station with a corresponding pressure knob can be provided. This gradual reshaping can be repeated as many times as required to obtain the desired trumpet-shaped expansion of the proximal end of the tampon applicator. The device according to the invention can be used to join tampon applicators from several hollow cylinders with a fast throughput in a space-saving and efficient manner. The device according to the invention is particularly suitable for joining a three-component tampon applicator with a telescopic plunger extended and locked in place.

Claims

1. A device for joining a multi-component tampon applicator, wherein the multi-component tampon applicator comprises an outer cylinder (101) and a first inner cylinder (102), the device comprising: a. at least one engagement station (12) having at least one receiving finger (13.1, 13.2) for receiving an outer cylinder (101) and a first inner cylinder (102), respectively; b. a first inner cylinder supplier for loading at least one first inner cylinder (102) into said at least one receiving finger; c. an outer cylinder supplier for loading at least one outer cylinder (101) into said at least one receiving finger (13.1, 13.2); d. a first processing station (16) for joining the at least one outer cylinder (101) to the at least one first inner cylinder (102) so that the at least one first inner cylinder (102) is located inside the at least one outer cylinder (101), and Features The at least one joining station (12) is arranged radially on the disk (11).

2. Device according to claim 1, wherein the at least one engagement station (12) is arranged radially on the disk (11) in such a way that the at least one receiving finger (13.1, 13.2) is oriented substantially radially.

3. The device of claim 1, wherein the multi-component tampon applicator comprises a second inner cylinder and the device further comprises: a. a second inner cylinder supplier for loading at least one second inner cylinder into said at least one receiving finger, and wherein b. The first processing station is adapted to join the at least one first inner cylinder to the at least one second inner cylinder so that the at least one second inner cylinder is located inside the at least one first inner cylinder, wherein the at least one second inner cylinder can be pulled out of the corresponding at least one first inner cylinder, and the corresponding at least one first inner cylinder can be pulled out of the corresponding at least one outer cylinder.

4. The device of claim 1, wherein the at least one receiving finger has multiple diameters.

5. The device of claim 4, wherein the receiving fingers have a plurality of diameters that taper in radial alignment.

6. The device of claim 4 or 5, wherein each diameter is configured to receive an outer cylinder, a first inner cylinder and a second inner cylinder, respectively.

7. The device according to claim 1, wherein the at least one receiving finger comprises at least one clamping mandrel for holding the outer cylinder and / or the first inner cylinder.

8. The device according to claim 1 or 2, wherein: The first processing station is designed to reshape the outer cylinder, the first inner cylinder and / or the second inner cylinder received on the receiving finger, or The second processing station is designed to reshape the outer cylinder, the first inner cylinder and / or the second inner cylinder received on the receiving finger, or The first and second processing stations are designed to reshape the outer cylinder, the first inner cylinder and / or the second inner cylinder received on the receiving fingers, The second inner cylinder is located inside the first inner cylinder.

9. The device according to claim 1 or 2, wherein the device comprises a plurality of engagement stations.

10. The apparatus of claim 1 or 2, wherein each engagement station comprises a plurality of receiving fingers respectively for receiving the outer cylinder and the first inner cylinder.

11. The device according to claim 1 or 2, wherein the outer cylinder supplier comprises a separation unit for separating the at least one outer cylinder.

12. The apparatus according to claim 1 or 2, wherein the disc is rotatable so that each of the engagement stations can be operatively connected to a radially arranged inner cylinder supplier, an outer cylinder supplier, a first processing station and a second processing station.

13. A method of using the device for joining a multi-component tampon applicator as claimed in claim 1, the method comprising the steps of: a. Aligning the engagement station with the first inner cylinder supply; b. loading a first inner cylinder into the first receiving finger of the engagement station; c. aligning the engagement station with the outer cylinder supply or the second inner cylinder supply; d. loading the receiving finger of the engagement station with an outer cylinder or a second inner cylinder, wherein the second inner cylinder is located within the first inner cylinder, and Features The alignment of the engagement stations (12) arranged radially on the disc (11) is achieved by circular rotation of the disc.

14. The method according to claim 13, wherein the receiving finger is coaxially operatively connected to the inner cylinder feeder and / or the outer cylinder feeder.

15. The method according to claim 13 or 14, further comprising the steps of: a. aligning the engagement station with the first processing station; b. Shaping the first inner cylinder and / or the second inner cylinder by applying heat and pressure.

16. Method according to claim 13 or 14, wherein when loading the engagement station, the inner cylinder having the smallest diameter of the multi-component tampon applicator is first loaded onto the first receiving finger.

17. The method of claim 16, wherein the inner cylinder having the smallest diameter of the multi-component tampon applicator is first loaded onto the tip region having the smallest diameter of the receiving fingers.

18. The method of claim 13, wherein the outer cylinder is clamped.

19. The method of claim 18, wherein the outer cylinder is releasably clamped on the receiving fingers by means of a clamping mandrel applying a restoring force.

20. The method of claim 13, wherein the outer cylinder is ejected by applying a restoring force to the receiving fingers by means of a clamping mandrel.

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