JPH02270751A - Sheet dispenser - Google Patents

Abstract

PURPOSE: To accurately dispense a specific length of film and accurately and neatly cut the film by providing a means for pulling off a sheet material of a specific length from the rolled material arranged inside a cabinet and a means for cutting a specific length of sheet dispensed from the roll. CONSTITUTION: An operator sets the designated length of collagen film to be dispensed and a switch of this device is to be turned on. The setting selected by the operator causes a motor to actuate for a specific number of times so as to make a specific length of film pass out of a casing 8 to the exterior. When a specific amount is dispensed, a solenoid automatically actuates a cutter bar 34 to come in contact with tension head rollers 30, 32 by moving a lever. As a result, the collagen film is cut to a specific length by a tension head 26 being moved rearward resisting a pressure spring 28 and developing the collagen film into a condition of being in contact with a hot wire cutter 24.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sheet dispenser for imparting length to sheet material. This dispenser can handle many different materials, such as cling film for food packaging, thin films known as collagen films, or any other film type that requires a given length and must be cut by a roll. Can be used for sheets.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a compact and efficient film dispenser that accurately dispenses a predetermined length of film and cuts it accurately and skillfully.

According to the invention, a sheet material dispenser, particularly for collagen sheets, comprises a motor drive means for drawing a sheet of predetermined length from a roll of material arranged in a cabinet; Consists of □, including means for cutting it off.

Preferably, the means for cutting the length of sheet from the roll comprises an electrically heated wire.

This wire only needs to be supported transversely to the cabinet and can be supported by two tension heads.
Book tension rollers, one above and one below the wire, and means for pressing the sheet against the rollers during cutting may be provided. The means for pressing the sheet against the rollers is a transverse bar, which extends towards the wire;
The bar may be provided with means for moving the bar, so that the bar is brought into contact with the tension roller and moves the tension head against the pressure of the spring so that the sheet is fixed hot. - Touches the wire and is cut by it.

Alternatively, the wire may be simply gripped to a predetermined length and tensioned by rollers or tension blocks to the sheet and then moved through the sheet to cut it. The roll of material may simply be supported on either roll and driven by a motor-driven roller that is in contact with the sheet and pulls the sheet away from the roller.

If a cutter bar is used, it is preferably supported on a pivot lever actuatable by a solenoid.

All operations can be carried out automatically so that after the predetermined length of sheet has been applied, the cutting process is carried out automatically and the hot wire, if used, The sheet is automatically held in contact for a predetermined period of time, such as the time the sheet is to be cut away, without danger.

The sheet dispenser to be described is particularly adapted to impart a predetermined length to a collagen film from a roll. As can be seen in particular in Figures 1, 2 and 3, this dispenser is housed in a cabinet 8 in which is arranged a collagen film roll 10 supported by a roll carrier 12, said roll carrier is an idler roll 1 in contact with a base roll 11 supporting the collagen film.
4 and 16. This collagen film
The rolls simply rest on the idler rolls and are therefore not driven by them.

Collagen film 18 is pulled from the film roll by feed rolls 20 and 22, and roll 2
0 is a motor 60 driven by a gear box 58 (as seen in FIG. 2). After passing through the bot wire cutter 24, this film is dispensed via an opening 23 in the lower part of the casing 8.

The wire cutter is supported between electrical connection means 52 and 54 as shown in FIG. 2 and held under tension by a spring 56.

At the top and bottom of the hot wire cutter in the arrangement shown in Figure 1 are two tension heads.
There are tension head rollers 30 and 32 supported in springs 28 and 32.
As can be seen in FIG. 1, it is biased toward the right.

Cuckoo bar 34 includes two levers 44 and 46 as shown in FIG.
5 and is supported by the cutter bar 34, which is pivotally mounted at 5 and connected to the cutter bar 34 by pins 48 and 50.

Levers 44 and 46 are movable by respective arms 40 and 42 actuated by solenoids 36 and 38. By activating both solenoids at the same time,
As shown in FIG. 1, the cutter bar is moved from right to left so as to bring rollers 30 and 32 into contact and to push the tension head to the left against the pressure of spring 28. Bye. In this manner, collagen film 18 is brought into contact with hot wire 24 to provide a predetermined length.

When using a device such as that shown in Figures 1.2 and 3,
The operator sets the specified length of collagen film to be applied and turns on the device. The settings selected by the operator result in actuation of motor 60 a predetermined number of times to pass a predetermined length of film out of casing 8 .

When a predetermined amount is applied, solenoids 36 and 38
Cutter bar 34 by moving levers 44 and 46
into contact with the tension head rollers 30 and 32, thereby forcing the tension head rearwardly against the pressure spring 28 and bringing the collagen film into contact with the hot wire cutter. .

This allows the film to be fed 1 and a collagen film with a predetermined cut length to fall from the bottom of the casing 8, which may then be collected in a suitable tray or container.

Two different types of cutting heads are illustrated in FIGS. 4 and 5.

namely, the roller cutting head previously described and illustrated in FIG. 1, as well as the peak canting head 26a shown in FIG. This peak-canting head, for example, does not use rollers such as 30 and 32, but simply has a pair of shaped jaws 25 that together form a peak, which are used when the cutting action is performed. The hot wire is held by the cutter bar 34 against the force.

To operate both of these cutting heads, the operator first sets the desired sheet length on potentiometer dial 15a and then presses button 16a labeled START. Two motor-driven rolls feed the film into catches/rays (not shown). When the selected length is reached, the roll stops.

A control circuit then applies current to the cutting wire. After this dead time, the cutter bar acts to pull the film forward past the tension head. As the film is pulled, the tension head is pushed back by the cutter bar to bring the film into contact with the hot wire, so that the film is cut.

The cutter bar then retracts to its rest position, restoring the tension head. This action separates the cut sheets of film, which fall into the catch tray. The dispenser is then ready for use again. These operations are the fourth. a, 4b, 4c and 4
They are shown in sequence in Figure c and Figures 5a, 5b, 5c and 5c.

Another cutting method is shown in Figures 6a, 6b, 6c and 6c. Collagen film 18 is now pulled off roll 10 again by driven rollers 20 and 22 and subjected to a hot process similar to that shown in FIG.
A wire cuckoo is used.

Tension blocks 62 and 64 are located below the hot wire cutter.

In this collagen film cutting method, twin
The same principles used in feed roll tension heads are used. Prior to cutting, tension blocks 62,64 grip the film 18 and tension is applied in a downward direction. Next, the hot wire passes through the film and after cutting, the tension
The block separates the film and its tension
When the block separates and returns to the starting position, the film is dispensed into the catch tray. These operations are shown over time in Figures 6a, 6b, 6c and 6c.

Still other arrangements are where no tension head or cuckoo bar is used, but simply a hot
The use of only wires is illustrated in Figures 7a and 7b. Here, a roll 10 is provided with a collagen film 18, which is pulled from the roll by driven feed rolls 20 and 22.

The film is maintained in tension by driven tension head rolls 25 and 27. This collagen film cutting method is again identical in principle to roller cutting heads and peak cutting heads by pulling the film prior to cutting with a hot wire. In this case, the feed measuring cycle
After one cycle, the film remains stationary and a hot wire passes through it. The tension roll then continues its rotational motion and dispenses the film into the catch tray.

Next, preferred embodiments of the present invention are listed below.

(1) A sheet material dispenser according to the claims, wherein the means for cutting the sheet of predetermined length from the roll comprises an electrically heated wire.

(2) The wire is supported across the cabinet and two wooden tension rollers supported by tension heads, one above the wire and one below; A sheet material dispenser according to claim 1, wherein means are provided for pressing the sheet against the roller during cutting.

(3) The means for pressing the sheet against the rollers comprise a transverse bar, and means are provided for moving the bar towards the wire so that the bar comes into contact with the tension roller. 3. A sheet material dispenser according to claim 2, wherein the sheet material is moved by moving the tension head against the pressure of the spring so that the sheet contacts and is cut by a stationary hot wire.

(4) The cutting head brings the sheet into contact with a beak-shaped projection, usually spanning the hot wire, and the cutter bar, pressing it against the peak-shaped extension. and moving the slicing head in relation to the wire so that the sheet comes into contact with the hot wire and is cut thereby. material dispenser.

(5) The sheet is drawn from the roll by a driven roller on one side of the hot wire, and on the other side of the hot wire a tensioning device consisting of a tension block is arranged to apply tension to the sheet. - the block is adapted to grip and apply tension to the sheet as it is cut, and the hot wire is connected to the sheet so as to pass through and cut it away; A sheet material dispenser according to embodiment 1, which is movable.

(6) A sheet material dispenser according to embodiment type 5, wherein the tension block is replaced by a tension roll serving the same purpose.

(7) rotation of the driven roller to cause the driven roller to pull the sheet having the predetermined length from the roll and to bring the hot wire and the sheet into contact with each other during cutting for a suitable period of time; A sheet material dispenser according to any of the preceding embodiment claims, as well as claims comprising an idle roller for supporting a roll of material. A sheet material dispenser according to any of the preceding embodiments.

(9) A collagen sheet material dispenser according to any one of the claims and the embodiments.

(10) A sheet material dispenser substantially as hereinbefore particularly described and illustrated in the accompanying drawings.

[Brief explanation of drawings]

Figure 1 is an inverted view of the collagen film dispenser with the side panel removed to show the internal operation, and Figure 2 is the cover and counter with the side panel removed to show other parts. - Upright elevation view showing dispenser with bar assembly, third
Figures 4a and 4b are plan views showing the device with the cover removed.
, 4c and 4d show one embodiment of the cutting head and illustrate the process of using the canting head to cut away a predetermined length of collagen film; 5a, 5b, 5c and 5d show the peak・Different types of cutting known as cutting heads ・
Figures 6a, 6b, 6c also illustrating the use of the head.
Figures 7a and 6d illustrate the use of another embodiment of the cutter known as a feed roll tension bar cutter and illustrate the different steps in the operation of this cutter, and Figures 7a and 7b as a twin feed roll tension head. Figure 3 illustrates yet another embodiment of a known cutter and illustrates fixation in the use of this embodiment of the invention. 8...cabinet, 10...roll, 18...
Collagen film, 20.22... Feed roll, 24... Hot wire cutter, 26...
- Tension head, 26a...Peak canting head, 30.32...Tension head roller, 34...Cutter bar, 62.64...Tension block. (Tato 2 people)

Claims (1)

[Claims] The present invention is characterized by comprising means for drawing out a sheet material having a predetermined length from a roll of material arranged in the cabinet, and means for cutting off a sheet having a predetermined length from the roll. sheet material dispenser.