RS55873B1 - DEVICE AND PROCEDURE FOR PRODUCING A CABLE CALENDAR - Google Patents

Description

The proposed invention relates to a device and procedure for the production of standing or table calendars and similar products that have a stand or part for installation.

From GB 1, 164,960 A, a presenter is known, the visible part of which is made of rigid cardboard at the upper end is rotatably mounted on a folding leg, which is also made of rigid cardboard. In order to spread this assembly between the visible part and the folding leg during installation as well as when fixing the solid setting, a wedge-shaped piece of foam plastic is glued in the continuation of the assembly between the visible part and the folding leg.

From the state of the art, various forms of structures of differently connected table calendars are known, the sheets of which are designed to be torn or turned. As a basic principle of the widespread form of the structure of the desk calendar for scrolling, it can be stated that in addition to a so-called core with real calendar sheets, a desk stand or console, a functioning background, and a cover sheet are also provided. These components are connected to each other via a common, and in the usable position above, connection, which is usually performed as a ring connection. Regarding the known structural forms of table calendars in full, reference is made to DE 693 35 83 U.

In the case of table calendars, the mentioned types of backs are made in one piece, two-layered, with defmised weakening of the material to create folds. At the same time, both free ends of these double-layer folded backs are covered once, as a rule, as a spiral or so-called Wire-0 derived connection. In the initial position, these backs have, as a rule, the same width as the core, and an additional, protruding length on one side that lies opposite the connection. In order to place it with the backs, that is, by bending the bending folds that extend parallel to each other, it creates an essentially prismatic body, that is, a body with a triangular cross-section and a rectangular side of the base as well as an open front side. This back body made of cardboard or cardboard is also referred to as a console.

In EP 2607092 Al, the applicant proposed a weight-reduced and materially more efficient alternative with a suitable production process, contrary to known settings. Two backs made of cardboard are provided for this type of desk calendar, which are connected to each other with a plastic slit in an A-shaped tripod, i.e. a console or support. As a splinter, the familiar oblong plastic part with T-shaped ends is used, which is inserted through the punched holes using a manual splinter gun as a standard tool. Both the procedure and the device in the form of a calendar console have been substantially confirmed.

The task of the proposed invention is to perfect the device and the procedure for the production of table calendars with backs from two parts in order to achieve cost advantages.

The task is thus solved by a process for the production of table calendars with a core and one back part from two pieces and one connection that connects the back parts and the core, where the back parts are connected to each other for the purpose of building an A-console, with the characteristics of requirement 1, that in one connected unit with the back lying upwards in the working position, the upper part of the back is raised against the lower part of the back, the connector is coated with glue and placed between the upper back part and the lower part parts of the back, so the upper part of the back is placed on the lower part of the back. It means that two back parts made of cardboard are connected into one A-shaped "console", i.e. a tripod or support, in which a joint is glued between the two back parts, which in one particularly advantageous form of the invention consists of paper tape. This achieves a high degree of uniformity in the material of the entire desk calendar, which is particularly advantageous when being reused in the recycling process and brings with it cost benefits.

Also, the device with the characteristics of requirement 12 represents the solution of the previous task. Favorable improvements are the subject of the respective subheadings. Therefore, the joint is made by bending some paper strip formed in the main V-shape. Alternatively, other bends are also possible, such as M or W-shaped bends, which, in contrast to the V-bend, have a Leporello-type bent intermediate piece. However, in each of the aforementioned cases, the paper strip is drawn from a single warehouse, the warehouse being constructed as an endless reel-shaped container. After that, the folded paper strip is shortened according to the requirements of the respective current A-console design for the desk calendar or similar according to the task in question.

The connector is transported in an adjustable manner by the transport device from the bending and cutting positions through the application of glue to the placement on the lower back part. In particular, the coupling clamped between two rubberized conveyor belts, i.e. conveyor belts, is pulled in the direction of transport, transported and installed. This greatly simplifies the handling of the coupling, even if it has to go through different positions.

In a particularly favorable embodiment of the invention, the coating of the joint is exclusively carried out on two essentially opposite lying places with glue, primarily without the use of solvents, using, for example, hot glue, which also has the significant advantage of faster curing. Coating of the joint with glue takes place primarily non-contact as a defined application of hot glue via at least two nozzles. At the same time, the glue in the form of a thin film is applied to the outer side of the joint, which is opposite to the lying one, which is then positioned or inserted between the back parts and is always glued to one of the back parts.

In one embodiment, a suitable suction pump is used to selectively lift the upper back. Only the upper back is easily lifted with one regionally limited negative pressure. Then, the upper back part is raised with a pneumatic lifter or essentially a triangular-shaped lifting ramp further in a defined way, especially so far, until the position above the dead center of the upper back part is reached. In both cases, accidental closing is thus safely excluded, whereby the lower lumbar part together with the core remains safely on the conveyor belt.

Primarily, the upper back part is placed on the lower back part after inserting the coupling equipped with glue, for which a triangular-shaped lifting ramp and/or pressing wheel or pressing roller is again applied. At least in the area of the coupling, however, pressure is applied to ensure the adhesion of both ice parts to the coupling.

In one favorable embodiment of the invention, the final test of each unit is achieved by lifting the upper back part, especially one, before assembling the back parts, between the placed parts of the lifter. Only once correctly connected to the back parts by the coupling, the lower back part is raised so much, that the optical fork sensor placed specially on the fender sheet is put into operation. Otherwise, the lower back part remains on the core, so that the optical sensor is not put into operation without interrupting the optical ramp between the fork and the fender. This is recognized as a deficient bonding of the connector and thus in the following as a deficient product to be separated as bofl.

In the following, further characteristics and advantages of the embodiment according to the invention will be explained in more detail with reference to one example performed on the basis of pictures and drawings. In the drawings, it shows in sketched representations: Figure 1: representation in perspective of the device according to the invention in production to the process with a view in the direction of transport with an already connected core unit and one two-part back in different production stages;

Figure 2: representation in perspective analogous to Figure 1 with a view against the direction of transport due to the representation of a particular area around the transport device for couplings;

Figure 3: detail enlargement of Figure 2;

Figure 4: perspective representation analogous to the previous images mostly normal to the transport direction due to the representation of the final production steps including the final test and

Figure 5: Enlarged view of area D with devices through the final test run as well as a good/bad separation.

In different images, the same relative symbols are always applied to the same elements. Without limiting the invention, in the following, only one use of the device according to the invention for producing calendars, especially for desk calendars, will be presented and described. For an expert, the possibility of replacing paper and cardboard with foil or thin metal plates or the like is obvious.

At the same time, the method of tying the units that are processed for application and/or adjustment to a device in the proposed presentation is of no importance.

Figure 1 shows an example of the embodiment of the device 1 according to the invention presented in perspective with a view in the direction of transport. There are already presented together the connected units 2 ready for making a table calendar in the process steps that follow each other, i.e. the production stages in line with the areas A to D described in detail later.

These units 2 each include one core 3 and one back 4, which are connected to each other in one piece by a ring connection, which is not further presented here. The back 4 is made in two parts, it includes, as a rule, two matching back parts 4a, 4b. Units 2 are transferred on conveyor belt 5 through areas A, B and C of device 1 up to the final control with good/bad terminal separation.

In area A, only the opening of each unit 2 follows. At the same time, the core 3 is moved lying on the conveyor belt 5 into the working position, so that the two-part back 4 with the back parts 4a, 4b are accordingly turned away from the conveyor belt 5, i.e. they are directed upwards.

In the first step, the upper part of the back 4a opposite the lower part of the back 4b is lifted by the pump 6 during transport on the conveyor belt 5. Between the back parts 4a, 4b in the following, the pneumatic lifter 7 engages for the defined lifting of the upper back part 4a. The opening and lifting of the upper part of the back 4a continues up to the position above the dead center until it rests on the support or guide sheet 8, so that the closing of the described setting by itself could be safely excluded. Thus, the lumbar parts 4a, 4b remain open to each other with an angle a of more than 90°, here it is approximately 110°.

In an alternative not presented here further, for this opening, from the opening of the upper back part 4a until it is translated into the said stable position above the dead center, an essentially triangular-shaped increasing ramp is applied, which, as it moves forward, is inserted between the back parts 4a, 4b. Thus, the described opening is obtained automatically without the use of further drives that should be used and similar during the progressing transport of unit 2 on the conveyor belt 5. Each application of the ramp, however, makes it necessary to extend the conveyor belt 5, so that this passive addition when setting the maximum length of the total conveyor belt 5 in a given case must be changed in favor of shortening the longest axis of the total device of the previously described pneumatic components.

At the same time, in the main parallel flow, in area B, a connector 9 is made by bending from the container, in this example of making an endless container 10 in the shape of a reel, the drawn paper strip 11 is supplied with glue and placed between the back parts 4a, 4b. These procedures are even better recognizable based on the presentation of picture 2, which will now be addressed. Attached to the endless container 10, point tensioners ensure a predetermined tension as well as a smooth movement of the paper strip 11. After that, the paper strip 11 is mainly pre-deformed into a V-shape via diverting reels and guides and finally bent.

Figure 3 shows, for the purpose of clarifying the assembly and the manufacturing process, the area from the cutting device 12 up to the placement of the relevant connector 9 on the lower back part 4b as an enlarged detail of Figure 2. In the area of the cutting device 12, each free end 13 of the bent paper strip 11 is pulled between two conveyor belts 14 in the form of a belt in the transport device 15 and fixed by clamping. Upon reaching the predetermined length of the paper tape 11, the cutting device 12 is activated so that the bent and accurately measured piece of paper tape 11 is separated and as a later coupling 9 is carried by friction between the conveyor belts 14 in the form of a belt. The movement of the paper strip 11 corresponds to the activation of the cutting device 12 essentially to the transport speed of the transport device 15, so that the paper strip 11 is taken from the transport device 15 safely and without piling up and crumpling.

Both transport belts 14 of the transport device 15 move at the same speed, i.e. synchronized and in the opposite direction to each other, so basically like a mirror image, so that the transport belts 14 in direct contact with each other have no relative movement. The driven transport belts 14 thus form two crawler conveyors superimposed over the transport track as a transport device 15 for a plurality of couplings 9. The thus created transport route of the transport device 15 extends from the feed-in area near the cutting device 12 all the way to the surface of the corresponding lower back part 4a on which the coupling 9 is then placed. When placing the respective coupling 9, the transport speed of the transport device 15 corresponds to in the main one, conveyor belt 5 with transporting units 2 on it.

In the next step, in area B, an adhesive layer is now externally applied to two, oppositely lying, areas of the connector 9, which is performed with the application of some hot glue. Depending on the activation of the cutting device 12 as well as the transport speed of the transport device 15, the position of a coupling 9 is constantly known exactly in the transport device 15. Upon reaching the previously determined position, contactless coating of the coupling 9 with glue follows as a coating via at least two nozzles 16. Alternatively, sensors on the transport device 15 can be used to control the nozzles 16 for coating the couplings 9.

The hot glue is selected as a substance and tempered in such a way that in very small amounts in the form of a thin film 17 on each connector 9, it sticks securely for as long as possible, until the connector 9 is positioned between the two ice parts 4a, 4b and the ice parts 4a, 4b in the areas C that follow are not joined together again and pressed together in the closing position with a rotating, pressing roller 18. The amount of hot glue applied is also measured in such a way that spilling over the connector 9 and/or gluing or gluing the bent connector 9 is excluded.

After activating the device 12 for cutting and making the joint 9, the further movement of the paper strip is then stopped and only after some time of waiting is it started again. This creates a distance A between the couplings 9 that follow each other on the device 15 for transport. This distance can be matched with one transport stroke of the conveyor belt 5 and the format of the transport unit 2 on it, so that the transport device 15 can work essentially in continuous motion. It is advantageous to choose, however, an alternating drive of the transport device 15 controlled by the sensors not presented further, where the activation of the transport device 15 is timed by the arrival of each prepared unit 2 on the conveyor belt 5.

In this position, an essentially triangular ramp can be used again instead of a separate pneumatically actuated closing mechanism, as for example shown in Figure 4. Analogous to the situation of area A in Figure 1, the upper back part 4a, for example, from the support and guide sheet 8 in the direction of transport would be constantly wedged from behind and overlapped on the lower back part 4b. This ramp can then also contain a pressing rotary roller 18.

After tightening the joint 9 between the back parts 4a, 4b, the hot glue is already as a thin film 17 cooled so much that the separation of the gluing within those on the unit 2 in function as a desk calendar of normally acting forces is no longer possible. Accordingly, a final control can now be carried out directly on the roller 18 for pressing the area B connected in the area C by examining the regularity of the functioning of the coupling 9, its presence as well as the satisfactory gluing of the coupling 9 to the respective back parts 4a, 4b, see figures 4 and 5. For this, a fork-shaped fender 19 is provided, between which the upper tooth 19a and the lower tooth 19b installed optical sensor. Before the closing of the back parts 4a, 4b and the joining or pressing that follows at least the area around the connector 9, the tongue of the pneumatic lifter 20 is placed between the back parts 4a, 4b. After the relief and return rotation of the pressing roller 18, the upper back part 4a is lifted by the pneumatic lifter 20, which again alternatively can be carried out by applying a suitably sized and already before the locking of the back parts 4a, 4b among these, for example with one tongue, introduced by a triangular ramp.

In any case, only when functioning according to the regulation of the coupling 9, with the lifting of the upper back part 4a, the lower back part 4b will also be lifted. If the lower back part 4b, however, remains lying on the core 3, it must be that the gluing of the joint 9 is defective. Only in this case does the lower back part 4b not interrupt the light ramp of the optical sensor located between the prongs 19a, 19b, or the unit 2 even remains hanging on the lower prong 19b in the form of a fork made of tin feder of the optical fork sensor 19. In these cases, the good/bad separator 21 is activated in the area D. The unit 2 in question is then separated as scrap by opening the flap 22 towards below, see arrow S. The good-parts leave the area D, on the other hand, through opening 23 by a transport path not further represented in the direction of arrow G.

With the saving of the plastic part, an economical procedure for the production of table calendars, which can be flexibly adjusted to different formats, has been previously described. In contrast to the products according to EP 2607092, the Al products produced according to the invention have a high degree of material identity, since they essentially consist, in addition to a small amount of glue, only of a metal bond of paper and cardboard. The re-use of products of this type is thereby, according to the proposed invention, even more improved, as far as the environment is concerned.

List of related characters

1 Device

2 Units

3 Core

4 Back 4a upper back (in build position)

4b lower back (in build position)

5 Conveyor belt

6 Pump

7 Pneumatic lifter (alternatively ramp)

8 Support and guide sheet

9 connectors

10 infinite tank

11 Paper tape

12 Cutting device

13 Free end of paper strip 10

14 Belt-shaped transport belt

15 Transport device / Crawler conveyor

16 Application nozzle / Spraying of hot glue

17 Cling film

18 Pressing wheel / Pressing roller (alternatively ramp) 19 Tin damper on the end sensor / optical fork sensor 19a upper tooth

19b lower tooth

20 Pneumatic lifter for selective lifting of the upper back part 4a after connecting by pressing

21 Separator good / bad

22 Valve

23 Suppressed

A 1. Area = opening

B 2. Area = joint making and installation

C 3. Area = closure and final test

D 4. Area = separation good / bad

a The opening angle between the back parts 4a, 4b in the position above dead

points

A The distance between the coupling 9 in the transport device 15

G Direction of transport of good deeds

S The direction of transport of bad works, i.e. scrap

Claims (12)

1. The procedure for the production of table calendars with a core (3) and one two-part back part (4a, 4b) and a connection connecting the back parts (4a, 4b) and the core (3), whereby the back parts (4a, 4b) are interconnected to make an A-stand, at the connected unit (2) with the back (4) lying upwards in the working position, the upper part of the back (4a) is lifted up against the lower back part (4b), indicated by the fact that the joint (9) is coated with glue and inserted between the upper back part (4a) and the lower back part (4b) and the upper back part (4a) is placed on the lower back part (4b). 2. The method according to the previous claim, characterized in that the joint (9) is made by bending a substantially V-, M- or W-shaped paper strip (11) which is pulled out of the container, especially from the endless container (10) in the shape of a wheel and then shortened. 3. The method according to the previous claim, indicated by the fact that the joint (9) is transported from the position of bending and cutting through the application of glue to the installation of the lower back part (4b) using the device (15) for transport. 4. The procedure according to the previous claim, indicated by the fact that the coupling (9) is clamped between two rubberized conveyor belts, i.e. the conveyor belt (14) which move in synchronization, is pulled into the device (15) for transport, transported and placed on the lower back part (4b) of the unit (2). 5. The method according to one of the previous claims, indicated by the fact that the coating of the connector (9) with glue is carried out from the outside in two places lying opposite each other, especially with the use of hot glue. 6. The method according to the previous claim, indicated by the fact that the coating of the connector (9) with glue takes place contactless as the application of an adhesive film (17) with the use of at least two nozzles (16). 7. The method according to one of the previous claims, characterized by the fact that for the selective lifting of the lower back part (4a) a pump (6) is used, which hands the upper back part (4a) to a pneumatic lifter (7) or an increasing ramp of essentially triangular shape for a defined lifting of the upper back part (4a). 8. The procedure according to the previous claim, indicated by the fact that the opening and lifting of the upper back part (4a) continues until above the top dead center, especially until the upper back part (4a) rests on the supporting and guiding sheet (8). 9. The method according to one of the previous claims, indicated by the fact that the upper back part (4a) is placed on the lower back part (4b) after applying the glue-equipped coupling (9) and at least in the area of the coupling (9) is pressed, especially with the use of a pressing wheel (17). 10. The procedure according to one of the previous requirements, characterized by the fact that the final test is carried out in such a way that the upper back part (4a) of the unit (2) in question is raised, whereby only once correctly connected with the back parts (4a, 4b) by the coupling (9), the lower part (4b) is raised so much that the signal of the optical fork sensor (19) is interrupted. 11. The method according to one of the previous requirements, characterized by the fact that for lifting or closing the upper back part (4a) an appropriately dimensioned and essentially triangular ramp extending against the transport direction is used. 12. Device for connecting the back parts (4a, 4b) of table calendars with two-part backs (4), where both back parts (4a, 4b) are connected to each other to create an A-stand, and a device comprising a conveyor belt (5) for horizontal delivery of connected units (2) from one core (3) and one back (4) with upwardly lying back parts (4a, 4b), device for lifting the upper back part (4a) against the lower one, on the core (3) of the lying lower back part (4b) and means for closing or folding the upper back part (4a) onto the lower back part (4b), whereby device assembled for carrying out the procedure according to one of the previous requirements that the device includes between the lifting device and means for closing, i.e. folding the upper back part (4a) to the lower back part (4b) means for inserting and placing one of the connectors (9) equipped with glue on the outside between the back parts (4a, 4b). 13 The device according to the previous claim, indicated by the fact that the device for lifting the upper back part (4a) opposite the lower back part (4b) is made as a pump (6), where a pneumatically actuated lever (7) and/or a ramp that rises in the direction of transporting the unit (2) are provided for complete opening. 14 The device according to one of the previous requirements, indicated by the fact that for the final test, the optical fork sensor (19) with the upper tooth (19a) and the lower tooth (19b) is made in such a way that the sensor signal can be interrupted only by the lower back part (4b) which is raised by the upper back part (4a) using the coupling (9) correctly placed in a predetermined manner.