JPS6117262B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a device for attaching valves to prepared packaging materials, such as packaging bags or packaging materials, respectively, for supplying the valves one after another to a delivery position. of the type comprising a device, a drilling tool for forming gas passage holes in a prepared packaging material, and a pressing plunger for attaching the supplied valve to the gas passage holes of this packaging material; .

BACKGROUND OF THE INVENTION A packaging machine known from DE 28 48 833 A1 has a transport device for packaging bags and a processing station arranged in series with the transport device. A device for attaching one valve to the packaging bag is arranged at each station. This device for attaching the valve to the packaging bag includes a drilling tool for making a hole in the packaging bag, a pressing plunger for gluing the supplied valve at the position of the hole in the packaging bag, and a device for the pressing plunger. , and a counter-holding member that can enter into the opening of the packaging bag which is not yet closed. The punching tool and the pressing plunger are movably arranged toward the side wall of the packaging bag, and the punching tool is supported coaxially with the pressing plunger within the elongated hole of the pressing plunger. The valves, which are provided with adhesive on one side, are fed to the pressing device in the form of adhesive tickets held on a holding belt, and one valve in each case is peeled off and placed in front of the end side of the pressing plunger. When a packaging bag arrives at a processing station with a valve attachment device, the punching tool first performs a reciprocating movement, during which a hole is punched in the wall of the packaging bag. One of the valves is then peeled off from the retaining belt and placed in front of the end face of the pressure plunger which is being withdrawn. During the subsequent forward movement of the pressure plunger, this pressure plunger presses the valve into the position of the pre-drilled hole in the packaging bag and glues the valve, while a counter-holding body introduced into the opening of the bag applies a counterpressure. It's becoming like that.

Problems to be Solved by the Invention However, in the above-mentioned known device, the drilling tool is arranged in the pressing plunger so as to be movable coaxially with respect to the pressing plunger. The structure of the shifting device for this is complex and requires a lot of space. In particular, in a tube packaging machine that wraps a band-shaped packaging material around a forming tube to form one tube and then divides it into several packaging materials, it is necessary to use attached equipment other than the packaging material forming device. The known device is disadvantageous because it provides only a small amount of space for this purpose.

Means for Solving the Problem In the present invention, which solves this problem, the valve delivery position of the valve supply device is fixedly arranged at a predetermined position, and the drilling tool and the pressing plunger are arranged between the two end positions. a support body which can be reciprocated at a distance corresponding to the distance between the valve delivery position and a valve mounting position for mounting the valve on the prepared packaging material, and a pressing plunger is provided at said valve delivery position. A drilling tool is arranged on the valve mounting position side.

Operation According to the valve mounting device of the present invention configured as described above, two simple drive devices for the drilling tool and for the pressing plunger, which are completely independent of each other, can be mounted on one support. can be placed in Moreover, by means of a pressure plunger which takes off each one valve in the correct position of the valve delivery position, and by means of a support which makes it possible to bring said taken-off valves precisely into the position of the holes pre-drilled in the wall of the packaging bag. The reciprocating movement of the body allows for precise positioning of the valve in the hole in the packaging bag. By providing a common, reciprocating support for the drilling tool and the pressure plunger, the movement for positioning the valve in the packaging material and the movement of the drilling tool into working and non-working positions are achieved. As a result, the simple structure of the valve mounting device according to the invention has an extremely high working efficiency and can be easily integrated into various types of packaging machines.

Embodiment Next, the structure of the present invention will be specifically described with respect to an embodiment shown in the drawings.

A sector-shaped support 12 is supported on a horizontal base plate 11 so as to be pivotable about a pivot point 13 . This support 12 is connected to a piston rod 14 of a working cylinder 15 actuated by a pressure medium, which allows the support 12 to pivot cyclically between its two end positions. Two other working cylinders 16, 17, which are actuated by pressure medium, are arranged on the support 12 next to each other at a predetermined distance. The piston rod 18 of one working cylinder 16 has a drilling or piercing tool in the form of a needle 19 with a V-shaped tip 20. The piston rod 21 of the other working cylinder 17 has a pressure plunger 22 with a suction device on its end face.
The suction device is formed by an opening 23, which can be connected via a line 24 and a valve (not shown) to a low pressure source. The base plate 11 furthermore has a receptacle 27 for a storage roller 2 with a holding belt 3 with a valve 1;
Direction changing rollers 28, 29, 30, a guide member 31 (valve delivery position) having a direction changing edge 32, and a pair of pull-out rollers 33, 34 driven in stages,
A winding device 35 for the holding belt 3 is arranged. A light barrier consisting of a light source 36 and a photocell 37 is connected to the deflection edge 32 of the guide member 31.
Check the feed of valve 1 in the range of (valve delivery position).

The guide member 31 is arranged on the base plate 11 in the following manner. This means that when the support 12 with the working cylinders 16, 17 is swiveled into its left end position, the deflection edge 3
The valve 1 peeled off from the holding belt 3 at position 2 is arranged so as to overlap the pressing plunger 22. On the other hand, in this left end position, the needle 19 is inserted into the packaging bag 4 made of flexible packaging material.
It is located at the hole drilling position. This packaging bag 4 is deformed with a mandrel 38 and prepared for mounting the valve 1. Each prepared packaging bag 4
In the mounting position for the valve 1 in , the mandrel 38 has a recess 39 for receiving the needle 19, for example on its wide side.

The illustrated device operates as follows.

The holding belt 3 has a pair of pull-out rollers 33 and 34
is periodically pulled out from the storage roller 2 and wound onto the winding device 35. At this time, when the valve 1 that is peeled off from the holding belt 3 slightly cuts off the light beams of the light barriers 36 and 37 at the delivery position before the deflection edge 32 of the guide member 31 (see Fig. 2), the valve removal operation is performed. The stroke is started by the machine preparing the packaging bag 4 and finished by the light barriers 36,37. In the embodiment shown, the valve 1 is shaped like a plate and is covered on its lower side with an adhesive layer, which allows the valve 1 to be separated into a holding belt 3 like an adhesive label. The valve 1 is adhered to the packaging bag 4 by means of this adhesive layer.

While facing the valve 1 held in the delivery position,
The pressure plunger 22 is forced out of its retracted position and the valve 1, which is still partially attached to the holding belt, is then drawn towards the end face of this pressure plunger by the suction action of the pressure plunger 22, where it is held in This transfer operation takes place at one left-hand end position of the support 12. At the same time, in this left-hand end position, the needle 19 is forced forward by the working cylinder 16, so that the needle 19 forms a gas passage hole in the form of an arched slit 5 in the packaging bag 4 prepared on the mandrel 38. Pressing plunger 22
and needle 19 into the retracted position, the working cylinder 15 pivots the support 12 into its other end position on the right. In this right-hand end position, the pressing plunger 22 presses the prepared packaging bag 4.
It is located above, in particular above the slit 5 previously formed in this packaging bag 4. In this position, the working cylinder 17 again pushes the pressure plunger 22 forward, so that the pressure plunger 22 presses the valve 1 it holds against the wall of the packaging bag 4 through the slit 5. After the suction conduit 24 has been separated from the low pressure source, the working cylinder 17 draws back the pressure plunger 22 and the working cylinder 15 again pivots the support 12 into said first position. At the same time, the packaging bag 4 with the glued valve 1 is transferred and another packaging bag is prepared. During this operation, the pull-out roller pair 33, 34 brings the following valve 1 with the holding belt 3 into the transfer position, and a new working stroke is thus started as described above.

The illustrated valve mounting device is installed in one embodiment of a packaging machine in which a packaging bag is manufactured from a flexible packaging material and the packaging material is subsequently filled with a product. Closed. This valve mounting device can also be used in particular in so-called tube packaging machines. Furthermore, the valve mounting device can also be integrated into a conveying device, in which a strip of packaging material or a piece of packaging material is supplied and which is then transformed into a packaging container.

The sealing properties of the valve can be enhanced by incorporating a viscous sealing material, e.g. silicone oil, squalane, etc., into the valve, so that the mounting point where the valve is attached to the packaging bag or packaging material is additionally equipped with a liquid metering and supply device. It is possible to assign This liquid metering and dispensing device applies very small droplets of liquid to the valve opening. Liquid is drawn into the valve by capillary action. Such liquid metering and supply devices may also be located at other stations where packaging bags equipped with valves are supplied.

Effects As described above, according to the present invention, a valve mounting device has been obtained which has higher work efficiency than conventional devices and can be easily incorporated into various types of packaging machines.

[Brief explanation of the drawing]

1 is a schematic plan view of a device for attaching a valve according to an embodiment of the invention, assigned to a forming mandrel of a packaging machine, in a first working position; FIG. FIG. 3 is a sectional view of the pressure plunger 22 and FIG. 4 is a side view of the drilling tool. DESCRIPTION OF SYMBOLS 1...Valve, 2...Storage roller, 3...Holding belt, 4...Packaging bag, 5...Slit, 11...Base plate, 12...Support, 13...Swivel center point, 14...Piston rod ,15,16,1
7... Working cylinder, 18... Piston rod,
19... Needle, 20... Tip, 21... Piston rod, 22... Pressing plunger, 23...
Opening, 24...Conduit, 27...Receptor, 28,2
9, 30... Direction changing roller, 31... Guide member,
32...Direction changing edge, 33, 34...Pull-out roller pair, 35...Wrapping device, 36...Light source, 37
... Photo cell, 38 ... Mandrel, 39 ...
Notch.

Claims (1)

[Claims] 1. A device for attaching valves to each prepared packaging material, the device for sequentially feeding the valves to a delivery position, and for forming gas passage holes in the prepared packaging material. and a pressing plunger for attaching the supplied valve to the gas passage hole of this packaging material, the valve delivery position 31, 3 of the valve supply device
2 is fixedly arranged in a predetermined position, and a drilling tool 19 and a pressure plunger 22 are placed on the support 12, which can be reciprocated between the two end positions, at the valve delivery positions 31, 32 and at the prepared packaging material. The pressure plunger 22 is placed on the valve delivery position 31, 32 side, and the drilling tool 19 is placed on the valve installation position side. A device for attaching a valve to packaging material, characterized in that it is arranged in a. 2. Device according to claim 1, in which the pressure plunger 22 has a suction device. 3 The suction device of the pressing plunger 22 is an opening 23 formed on the end surface side of the pressing plunger 22.
3. A device according to claim 2, comprising: 4. Claim 1, wherein the drilling tool 19 consists of a needle with a wedge-shaped tip 20.
Apparatus described in section. 5. Device according to claim 1, in which the support 12 is pivotable about a pivot point 13.