CZ14389U1 - Apparatus for producing louver lamellas - Google Patents

Description

Technical field

The technical solution relates to an apparatus for producing continuous louver louvres comprising a plurality of punching units and a cutting unit.

Background Art

Currently, two types of louver production equipment are known. The first type comprises a displaceable punching unit arranged on the conduit, for cutting out the fixing wire openings and the lifting and lowering cable openings through which the louver is pulled out and lowered and a cutting unit by means of which individual lamellae are cut off. The number of punching units corresponds to the number of all holes that are cut at the same time while cutting the finished lamella, which is stacked in the other part of the machine.

The disadvantage of this type of machine is the considerable construction length of the machine and the need for a long lamella to be supported between the punching and cutting unit, which complicates the adjustment of the machine to another lamella size. The disadvantage is the number of punching units that are needed.

Therefore, machines have been developed where holes are formed through the punching units successively, always on one half of the lamella. For example, for the production of a two-hole fixation line louver louvre and two pull-out and release cable openings, a device with two punching units is known, one of which punched openings for pulling and lowering cables and the other punching unit for the fixing string being doubled and with the cutting unit for separating the lamella from the endless tape. The disadvantage of this device is the increased number of stops of the endless tape during the punching depending on the type of lamella. The cable punching punching unit is adjustable relative to the cutting unit so that if the distance between it and the cutting unit is different than between it and the second punching unit, the endless strip must be stopped both when punching the first opening and pulling hole, thus, when punching the second pull cord opening. These stops affect machine productivity. The disadvantage is that the machine can not be adjusted without stopping it and adjusting it again, thus prolonging the loss time.

The essence of the technical solution

These drawbacks are largely eliminated in the endless strip laminating apparatus, comprising a punching unit assembly and a cutting unit, according to the present invention, wherein the fixation line hole punching unit is provided with a pair of separately actuated punches and disposed between the first punching unit and the second punching and punching unit punching unit, the first punching unit and the second punching unit being displaceably mounted.

It is advantageous for the automatic control of the device and the instantaneous transition from one type of lamella to the other when the two perforating and lowering cable punching units are provided with controlled servo motors connected to the machine control unit.

BRIEF DESCRIPTION OF THE DRAWINGS

The technical solution will be explained in more detail with reference to the drawings in which: Figure 1 is an axonometric view of a part of a machine with a cutting unit and punching units for punching apertures of louver slats in a position for cutting long louver slats in Figure 2; FIG. 1 shows a position for shearing the short louver plates and FIG. 3 shows a perspective view of the back side of the carrier plate of the piercing units of FIG. 1.

- 1 CZ 14389 Ul

Description of exemplary embodiments

Apparatus for producing louver slats according to the invention is provided with a cutting unit and an endless tape, a punching unit 2 for fixing strings, a first and a second punching unit 3 and 4 for lifting and lowering cables arranged on both sides of the punching unit 2 for fixing strings.

The endless strip cutting unit 1 and the fixing strings aperture unit 2 are fastened in a known manner to the support plate 14 of the device. The first punching unit 3 and the second punching and firing hole punching unit 4 are mounted adjustable in elongate guide holes 5, 6 provided on the support plate 14 along the sides of the fixing strings hole punching unit 2.

The first and second lifting and lowering cable openings 3, 4 are pneumatically or hydraulically driven and are provided with a single punch 7. A servomotor 15 is used to adjust them in the elongate guide holes 5, 6, respectively. on the back of the support plate 14. The servomotor 15 is connected to the control unit of the device in particular in the case of a pneumatic or hydraulic cylinder by means of its solenoid valves.

The fixing strings hole punching unit 2 is doubled with two separately operated punches 8. The drive of the fixing strings hole punching unit 2 is also pneumatic or hydraulic as well as the continuous strip cutting unit 1. The endless strip (not shown) is fed along the rail 9. The positions of the punching units 3, 4 of the lifting and lowering cable openings from the punching unit 2 of the fixing line openings are defined by the supports 10 fixed to the support plate 14 behind the strip 9 and before the endless strip cutting unit 1.

In the manufacture of the lamella, the first punching unit 3 and the second lifting and lowering cable opening punching unit 4 are set by their punches 7 from the plane of symmetry of the fixing strings aperture unit 2 at equal distances corresponding to the required mutual spacing of the lifting and lowering cable openings from the fixing holes. 1 for example in the case of long louver slats. The endless tape is fed by a servo motor (not shown). In the first cut, the end of the endless tape is guided under the knife of the shearing unit. Subsequently, a first shearing is performed, both the holes for the fixing strings by the punch unit 2 and the first and second punching units 3 and 4 of the holes for the hoisting and lowering cables. The strip is only moved by the spacing between the fixing stripe hole punch unit 2 and the endless strip cutting unit 1 which cuts the end of the strip midway through the holes of the punches 8 of the fixing stripe hole punching unit 2. Thus, a first opening for the fixing line and a first opening for the lifting and lowering cable are formed on the first lamella. The endless strip is moved to form a second opening for the lifting and lowering cable and a second opening for the fixing wire, which punches the punches 7, 8 simultaneously with the first opening of the fixing line and the first opening for the lifting and lowering cable. Then, the tape is moved by the spacing between the cutting unit and the endless strip and the punch unit 2 of the fixing strings and the first strip is cut. The above-described punching and shearing of the louver slats is repeated periodically after the last louver blade has been sheared, with only the second fixation line opening and the second lifting and lowering opening being cut through the punches 7, 8, the punch 7 on the second punch unit 4 and the second punch 8 on the punching unit 2 of the holes for fixing strings are minus operation. It is now possible to move the first and second punching units 3, 4 of the lifting and lowering cable openings, for example, to the position of FIG. The adjustment is made by the servomotor 15. After the adjustment, the first fixing line opening and the first lifting and lowering opening are punched first by the punch 8 of the punching unit 2 of the fixing strings and the second punching unit 4 of the lifting and lowering cable openings. After the endless tape has been displaced according to a predetermined dimension, punching is carried out with all punches 7, 8, thereby forming second holes for the fixing string and a lifting and lowering cord while forming the first holes for the fixing string and the lifting and lowering cord. The described process is now repeated until the next change in the slat size.

-2CZ 14389 Ul

Industrial usability

The technical solution is designed for machines for the production of blinds.

Claims (2)

PROTECTION REQUIREMENTS An apparatus for producing continuous web louvers comprising a set of punching units and a shearing unit, characterized in that its punching unit (2) for fusing strings is provided with a pair of individually operated punches (8) and is interposed between the first punching units and a second punching unit (4) for lifting and lowering cables, the first punching unit (3) and the second punching unit (4) being displaceably mounted. ío Device according to claim 1, characterized in that the first and second punching units (3, 4) of the lifting and lowering cables are provided with controlled servomotors (15) connected to the control unit of the device.