EP1179415B1 - Longitudinal machine for the working of corrugated paperboard - Google Patents

Abstract

The longitudinal cutting/grooving machine, to work corrugated cardboard webs, has a machine frame (1) and a pair of tool beds each with a number of tool carriers which are shifted by a threaded spindle (18). Each tool carrier has one tool, and there are more tool carriers than threaded spindles. Each tool carrier has a spindle nut (22) which rotates in the carrier and is held on the spindle, with a coupling (26) which can key it to the carrier.

Description

The invention relates to a longitudinal processing machine for Corrugated webs, which are regularly to Längsschneide- and / or Rill machines acts.

In such from EP 0 354 515 B1 (corresponding to US Patent 4,976,676) or EP 0 922 543 A2 (corresponding to US Pat. No. 6,071,222) are pairs of tool beds stored in a machine frame, by means of adapted drives towards each other and away from each other can be moved. Tool carriers are arranged on the tool beds, which are assigned to each other in pairs and transverse to the transport direction displaceable between them guided corrugated web are. Each pair of tool carriers carries a tool pair consisting of a tool and a counter tool in which it can be about scoring tools or knives. The tool carriers are between side parking spaces and one between them Workspace movable, with the work area of the largest possible Width corresponds to a corrugated web to be processed. By doing at least one lateral parking space, the tool carrier with the Tools or counter-tools parked when not in use are. This known embodiment of the longitudinal processing machines can also be used in the context of the invention. To the shift the tool carrier from the at least one parking space in the work space Threaded spindles are provided, with each tool carrier a separate spindle is assigned. In the tool holder is each rotatably arranged a spindle nut, so that in a rotary drive of the respective Tool carrier associated threaded spindle of the tool carrier on the corresponding tool bed transversely to the transport direction the corrugated web is moved, either in its working position in the workroom or out of this in the assigned parking space or in the workroom from one work position to another work position. Each threaded spindle has its own drive. These Design is very reliable and works very fast; but she is structurally complex and therefore costly.

From EP 0 312 956 A2 a longitudinal processing machine of the generic type Kind of known in which several cutting devices on one Carrier are stored and by means of a common spindle through Move on a rail or the carrier to be adjusted. The Cutting devices have a coupling device by means of which individual tool carrier with the constantly rotating spindle in Intervention be brought. If such a coupling device is opened, so the corresponding tool carrier remains with the knife on the corresponding position. The facilities for opening and closing the coupling between the spindle and the tool carrier are on attached to each individual tool carrier and are pneumatic or electrically operated. The positioning precision of this embodiment leaves to be desired. Furthermore, the machine is prone to failure, since the supply lines for the means for opening and closing the coupling have to walk with the tool carriers.

The invention is based on the object, a longitudinal processing machine for corrugated webs of the generic type in such a way, that the design effort for the transverse displacement of the tool carrier is reduced while increasing the positioning accuracy the tool carrier is made possible.

This object is achieved by the features of the claim 1 solved. The essence of the invention is that several tool carrier are driven by only one threaded spindle, and that the respective Tool carrier optionally with the threaded spindle can be coupled. The inventive design ensures that the tool carrier in their respective rest position in the parking space at their assigned Uncoupling drive can be positioned exactly so that they are ahead each new procedure in a working position in an exact zero position be spent. In addition, no supply lines for the Uncoupling drives are moved with these.

Advantageous and partly inventive embodiments emerge the dependent claims.

For supporting the corrugated web on a tool opposite Side there are numerous possibilities. So comes as Support means a rotatable, at least substantially over the full width of the corrugated web extending, circular cylindrical brush into consideration, as it is known from EP 0 443 396 B1. But it comes also the tools associated counter tools into consideration, then also transversely displaceable in the same way as the tools a tool bed are arranged.

Fig. 1

einen vertikalen Querschnitt durch ein erstes Ausführungsbeispiel einer Maschine nach der Erfindung gemäß der Schnittlinie I-I in Fig. 2,

Fig. 2

eine Seitenansicht der Maschine entsprechend dem Sichtpfeil II in Fig. 1,

Fig. 3

eine Draufsicht auf die Maschine gemäß der Schnittlinie III-III in Fig. 2,

Fig. 4

eine Teil-Draufsicht auf die Maschine in einer gegenüber Fig. 3 vergrößerten Darstellung,

Fig. 5

einen Teil-Querschnitt durch die Maschine entsprechend der Schnittlinie V-V in Fig. 4,

Fig. 6

eine Draufsicht auf ein zweites Ausführungsbeispiel einer Maschine nach der Erfindung und

Fig. 7

einen Teil-Querschnitt durch das zweite Ausführungsbeispiel der Maschine entsprechend der Schnittlinie VII-VII in Fig. 6.

Further features, advantages and details of the invention will become apparent from the following description of two embodiments with reference to the drawing. It shows

Fig. 1

a vertical cross section through a first embodiment of a machine according to the invention according to the section line II in Fig. 2,

Fig. 2

a side view of the machine according to the viewing arrow II in Fig. 1,

Fig. 3

a top view of the machine according to the section line III-III in Fig. 2,

Fig. 4

2 shows a partial plan view of the machine in an enlarged view compared to FIG. 3,

Fig. 5

a partial cross-section through the machine according to the section line VV in Fig. 4,

Fig. 6

a plan view of a second embodiment of a machine according to the invention and

Fig. 7

a partial cross section through the second embodiment of the machine according to the section line VII-VII in Fig. 6.

The longitudinal cutting or creasing machine shown in the drawing has a stationary machine frame 1, which is stationary on the ground 2, over a horizontal and transverse to the transport direction 3 of a corrugated web 4 directed transverse tracking 5 is supported. The machine frame 1 has horizontally and transversely to the transport direction 3 extending Side members 6, which at their ends by side walls 7, 7 'with each other are connected.

In the machine frame 1, between the side walls 7, 7 ', is a Pair of tool beds 8, 8 'in each case about a pivot axis 9 or 9' pivoted. The tool beds 8, 8 'are arranged one above the other, and about mirror-symmetrical to the corrugated web 4, they between them. The pivot axes 9, 9 'are in the side walls 7,7 'stored. Verschwenkungen about the pivot axes 9, 9 'take place designed by means of spindle-mother drives rotary actuators 10, 10 '.

At each of the corrugated web 4 facing sides of the tool beds 8, 8 'guide rails 11 are mounted on each of which again in pairs associated tool carrier 12, 12 'by means Guide blocks 13 horizontally and transversely to the transport direction 3 slidably are stored. At the above the corrugated web 4 arranged Tool holders 12 each have a tool 14 is rotatably mounted, the one located below the corrugated web 4 befindliches on the tool carrier 12 'rotatably mounted counter-tool 15 is assigned. Both Tools 14 and counter-tools 15 may be scoring tools for producing a longitudinal grooving in the transport direction 3 in the corrugated web 4 or knife for slitting the corrugated web 4 in Transport direction 3 act. Such scoring tools and knives and their Drive is known from EP 0 922 543 A2 (corresponding to US Pat. No. 6,071,222). The rotary drive of the tools 14 and counter-tools 15 takes place via a on the side walls 7, 7 'attached drive motor 16 by means of a respective joint shaft 17, 17 '. As far as the Tools 14 are rotating blades, the counter-tools 15 may also be designed as counter-holding tables, as it is also from the publications mentioned above is known.

The tools 14 and counter-tools 15 can by means of the pivot drives 10, 10 'brought into a shown in Fig. 1 engagement position in which by means of each pair of tools 14 and counter-tools 15 in the transported in the transport direction 3 corrugated web 4 either a grooving or a longitudinal section is generated. The Tools 14 and counter-tools 15 are further in a not shown Pivoting position in which they are out of engagement with the corrugated web 4 are.

In the embodiment shown in FIGS. 1 to 5 are all in Tool bed 8 stored tool carrier 12 and all in the tool bed 8 ' displaceably mounted tool carrier 12 'by means of one in each case Tool bed 8, 8a rotatably mounted threaded spindle 18 and 18 ' as an actuating shaft horizontally and transversely to the transport direction 3 in the transverse displacement direction 19 moved and positioned. The drive of these spindles 18, 18 'via one on the tool bed 8 and 8' attached Actuator 20, 20 'via a toothed belt drive 21, 21'. Each tool carrier 12, 12 'has a spindle nut 22 arranged on the spindle 18, 18' on, the inner thread 23 in the outer thread 24 of the respective Spindle 18 and 18 'engages. The spindle nut 22 is in each tool carrier 12, 12 'freely rotatably supported by roller bearings 25, but in the transverse displacement direction 19 fixed, as shown in FIG. 4.

At each tool carrier 12, 12 ', a coupling 26 is provided by means of derer the free rotation of the spindle nut 22 relative to the tool carrier 12, 12 'can be prevented, by means of which therefore the spindle nut 22 rotatably connected to the respective tool carrier 12, 12 'are connected can. In the illustrated embodiment, the clutch 26 as Clamp or friction clutch formed. On the outer circumference of the Spindle nut 22 is an integral or at least firmly connected thereto Clamping ring 27 disposed between the bearings 25, the - As shown in Fig. 4 shows - two slightly conical to each other Clamping or friction surfaces 28, 29 has. The ring 27 and the surfaces 28, 29 is assigned a coupling lever 30 in the tool carrier, the order an axis 31 extending in transverse displacement direction 19 pivotable in the respective tool carrier 12 and 12 'is mounted. The clutch lever 30 has a ring 27 and the surfaces 28, 29 adapted Clamping or friction jaw 32 on. The two-armed lever 30 is connected to a the jaw 32 facing the end by means of a prestressed pressure spring 33 acted upon in the direction of the spindle nut 22 out with force, so that - if none of the spring 33 oppositely acting force on the lever 30th is exercised - the clamping or friction jaw 32, the clamping or friction surfaces 28, 29 of the ring 27 firmly picks up, causing the spindle nut 22 rotatably connected to the respective tool carrier 12 and 12 ' becomes. In a drive of the threaded spindle 18 or 18 'means of the respective servomotor 20, 20 'are thus all tool carrier 12, 12 ', the spindle nuts 22 are rotatably coupled with them, depending on Direction of rotation of the spindle 18 or 18 'shifted in the transverse displacement direction 19, while not all rotatably with the respective spindle nut 22 associated tool carrier 12, 12 'in their position on the respective Tool bed 8 or 8 'remain at rest.

The opening or releasing of the clutch 26 takes place by means of uncoupling drives 34, 35 adjacent to the two side walls 7, 7 ' End portions of the tool beds 8, 8 'are arranged. These end areas are parking spaces 36, 37 for not in use tool carrier 12, 12 'with tools 14 and counter-tools 15. In these parking spaces 36, 37 are a total number of uncoupler drives 34, 35 arranged, which corresponds to the number of tool carriers 12 and 12 '. The on the tool beds 8, 8 'mounted uncoupling drives 34 and 35th are each as a fluidic, in particular pneumatic, acted upon piston-cylinder drives formed, the cylinder 38 on the tool bed 8, 8 'is mounted and the piston rod 39 against the lever 30 to the plant can come, and that at the spring 33 and the jaw 32 opposite The End. When an act of the cylinder 38 and a resulting extension of the piston rod 39 from the cylinder 38, the lever 30 is pivoted counter to the direction of force of the spring 33, so that the clutch 26 is released; the spindle nut 22 of corresponding tool carrier 12, 12 'is again free relative to the Tool carrier 12, 12 'rotatable. In Figs. 1 and 5, the piston rod 39 in retracted state shown; the spindle nut 22 is thus firmly with connected to the tool carrier 12. In Fig. 4, however, are some extended Piston rods 39, i. dissolved couplings 26, shown.

The control of the clutches 26, specifically the decoupler drives 34, 35, via a controller 40, over which not separately shown, in the uncoupling drives 34, 35 integrated solenoid valves be controlled. The controller 40 itself operates programmatically, i.e. when entering a certain format, the procedure is performed and positioning the tool carriers 12, 12 'with tools 14 and counter-tools 15 according to a predetermined procedure in the program. Basically, it should be noted that all with the respective Spindle 18, 18 'coupled tool carrier 12 and 12' during rotations the respective spindle 18, 18 'are moved. So it will not be the Tool carrier 12, 12 'in pairs one after the other in their final Working position spent, but one after the other with the spindle 18th or 18 'coupled that they at the end of the rotary drive of the respective Spindle 18, 18 'all brought simultaneously in their final working position become.

FIGS. 6 and 7 show a second embodiment of the invention. in a representation which corresponds approximately to FIGS. 4 and 5.

In this case, tool carriers 12a are displaceable in the respective tool bed 8a guided, wherein in each tool bed 8a two spindles 18a and 18b are mounted, which are independently by means of servomotors 20a, 20b via toothed belt drives 21a, 21b are drivable. A part, for example half of the tool carrier 12a, can be coupled to the spindle 18a, while the other part, for example, the other half of the tool carrier 12b with the other spindle 18b can be coupled. Corresponding are in the parking space 36a only the tool carriers 12a associated uncoupling drives 34a, while in the parking space 37a the tool carriers 12b associated uncoupling drives 34b are arranged. The Tool carriers 12a and 12b are identical to the tool carriers per se 12 formed in the embodiment of FIGS. 1 to 5; you are only each mirrored about a vertical axis to each other. The same applies to the uncoupling drives 34a and 34b in relation to the Entkuppel drives 34. Incidentally, in Figs. 6 and 7, only the upper Part of the machine shown. The same applies to the lower part.

In all embodiments, it is ensured that the tool carrier 12, 12 ', 12a, 12b in their respective rest position in the parking space 36, 37, 36a, 37a positioned on their associated uncoupling drive 34, 34a, 34b so that they will be in a working position before each new procedure be spent in an exact zero position. For this purpose are on the piston rod 39 of each uncoupler drive 34, 34a, 34b, a prismatic wedge 41 and on the clutch lever 30 a precisely adapted prismatic Recess attached so that upon engagement of the wedge 41 in the associated Recess 42 of the associated tool carrier 12, 12 ', 12a, 12b in a the stationary uncoupling drive 34, 34 a, 34 b exactly assigned Position, i. Resting position, is spent.

In general, it should be noted that per tool bed 8, 8 ', 8a no more than four, but preferably at most two threaded spindles 18, 18 ', 18a, 18b should be provided. Each threaded spindle 18, 18 ', 18a, 18b are at least two tool carrier 12, 12 ', 12a, 12b assigned.

Claims (12)

1. A machine for lengthwise treatment of webs of corrugated board, comprising

   a machine frame (1);

   a first tool bed (8, 8', 8a),

   which is movable from a position of rest into a working position and back again;

   at least one threaded spindle (18, 18', 18a, 18b), which is disposed in the first tool bed (8, 8', 8a) and

   which is rotatably drivable;

   several tool holders (12, 12', 12a, 12b),

   which are disposed on the first tool bed (8, 8', 8a) on a first side of a web of corrugated board (4) and supported for displacement crosswise of the conveying direction (3) of the web of corrugated board (4),

   which have a tool (14),

   the number of which exceeds the number of the threaded spindles (18, 18', 18a, 18b), and

   which have a spindle nut (22),

   which is disposed on the threaded spindle (18, 18a, 18b), and

   which is rotatably mounted in the tool holder (12, 12', 12a, 12b);

   a supporting arrangement for the web of corrugated board (4) disposed on a second side of the web of corrugated board (4); and

   a clutch (26), by means of which to couple the spindle nut (22) non-rotatably with the tool holder (12, 12', 12a, 12b),

   characterized in that disengaging drives (34, 35, 34a, 34b) for releasing the clutches (26) are mounted on the tool bed (8, 8', 8a), which are are disposed in at least one parking space (36, 37, 36a, 37a) of the tool beds (8, 8', 8a) that is disposed laterally of the web of corrugated board (4).
2. A machine for lengthwise treatment according to claim 1, characterized in that the disengaging drives (34, 35, 34a, 34b) are provided with arrangements for accurately positioning the tool holders (12, 12', 12a, 12b).
3. A machine for lengthwise treatment according to claims 1 or 2, characterized in that the clutch (26) is a clamp and friction clutch acting between the spindle nut (22) and the tool holder (12, 12', 12a, 12b).
4. A machine for lengthwise treatment according to claim 3, characterized in that the spindle nut (22) is provided with a clamp and friction ring (27), to which is allocated a clutch lever (30) which is pivotably lodged in the tool holder (12, 12', 12a, 12b) and has a clamp and friction jaw (32).
5. A machine for lengthwise treatment according to claim 4, characterized in that the clamp and friction jaw (32) is suited to clamp and friction surfaces (28, 29) formed on the clamp and friction ring (27).
6. A machine for lengthwise treatment according to claim 4 or 5, characterized in that the clutch lever (30) is loaded by an energy storing device (33) which forces the clutch lever (30) into a clutching position.
7. A machine for lengthwise treatment according to claim 1, characterized in that a second tool bed (8') is disposed on the second side of the web of corrugated board (4), forming a pair with the first tool bed (8, 8a, 8b).
8. A machine for lengthwise treatment according to claim 7, characterized in that tool holders (12') are disposed on the second tool bed (8'), which are allocated in pairs to the tool holders (12, 12a, 12b) of the first tool bed (8, 8a, 8b) and have a counterpart tool (15).
9. A machine for lengthwise treatment according to one of claims 1 to 8, characterized in that maximally four threaded spindles (18, 18') are disposed in each tool bed (8, 8', 8a).
10. A machine for lengthwise treatment according to claim 9, characterized in that maximally two threaded spindles (18a, 18b) are disposed in each tool bed (8a).
11. A machine for lengthwise treatment according to claim 9 or 10, characterized in that tool holders (12, 12', 12a, 12b) are disposed on the tool bed (8, 8', 8a, 8b) in a number which is at least twice the number of threaded spindles (18, 18', 18a, 18b).
12. A machine for lengthwise treatment according to one of claims 1 to 11, characterized in that allocated to each threaded spindle (18, 18', 18a, 18b) is a servomotor (20, 20', 20a, 20b) of its own.

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