JPH0531070Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an automatic wrapping film cutting device widely used in ordinary households.

[Prior art] Wrap film wraps food to protect it from dust, insects, etc., to prevent food and drinks from scattering when heated in a microwave oven, or to prevent deterioration of freshness, especially in the case of fresh food. It is very convenient for preventing such problems and is widely used as an essential item in general households.

FIG. 1 shows a wrap film of this type which is generally commercially available. To explain this briefly, reference numeral 22 is a transparent wrap film made of synthetic resin in the form of a thin film. A suitable length of the film is pulled out from a slit-shaped film outlet 22A provided at one corner of the film 2, and cut by a serrated cutter 23 provided along the film outlet 22A.

[Problems to be Solved by the Invention] However, such conventional cutting devices have the drawback of being extremely inconvenient and difficult to use. The reason is that you can hold the lap film 22 with one hand.
The wrap film 22 must be pulled and pressed against the cutter 23 to position it, and the wrap film 22 must be cut by holding the case 2 with the other hand, so it is not possible to hold the wrap film 22 with both hands. This is because when the cut ends of the cutter 23 are released from the cutter 23, they tend to flap, overlap, and stick to each other, and it takes time to open them, and furthermore, once they are in close contact, it is difficult to open them properly.

Therefore, as a method to solve this problem, for example, as shown in FIG. 2, a tool rest 31 equipped with a cutter (not shown) is disposed at the lower front of the case 3 so as to be movable in the longitudinal direction of the case 3. However, it is conceivable to move this tool rest 31 and cut the wrap film 33. Note that 32 is the upper lid of the case 3.

However, even in such a cutting device, when cutting, the tool rest 31 must be moved with one hand.
Since the wrap film 33 must be kept under tension with the other hand, the above problem cannot be completely solved, and there is still room for improvement.

Therefore, the present invention was devised in view of the above-mentioned conventional problems, and its purpose is to make it possible to hold the wrap film with both hands by reciprocating the cutter using a drive motor. An object of the present invention is to provide an automatic wrap film cutting device that can automatically cut the wrap film.

[Means for Solving the Problems] In order to achieve the above object, the present invention is formed in a long box shape and has a slit-like film outlet,
A case that rotatably stores a rolled wrap film; a cutter that is disposed at the lower front of the case so as to be movable in the longitudinal direction of the case; A drive motor for moving and its transmission mechanism,
A wrap film is placed on the front of the case and pulled out from the film outlet of the case.
A switch that changes the direction of rotation of the drive motor when turned on or off.

[Operation] In the present invention, the cutter is moved in the longitudinal direction of the case by the rotation of the drive motor being transmitted by the transmission mechanism, and cuts the wrap film.
The switch is turned on by pressing the wrap film, and is turned on by releasing the pressure after cutting.
This turns OFF, and this ON/OFF operation switches the rotation direction of the drive motor. Therefore, the cutter is moved back and forth.

[Example] Hereinafter, the present invention will be described in detail based on an example shown in the drawings.

FIG. 3 is an exploded perspective view showing an embodiment of the wrap film automatic cutting device according to the present invention, FIG. 4 is an external perspective view of the same cutting device, FIG. 5 is a sectional view of the same cutting device, and FIG. 6 is the same. 7 is a perspective view of the drive motor and its transmission mechanism, and FIG. 8 is a sectional view showing the state in which the wrap film is cut. In these figures, reference numeral 5 denotes a case 5 that rotatably stores a roll-shaped wrap film 4. This case 5 is formed in the shape of a long box that is long in the left and right direction with an open top surface, and has a top lid 7 that can be opened and closed at the top opening. is attached, and a bottom cover 9 is attached to the lower surface of the front end. The interior center of the case 5 forms a storage area for the wrapped film 4, and a pair of left and right support members 6 for rotatably supporting the wrapped film 4 are disposed on both sides thereof facing each other. Case 5
A storage recess 52 for storing the drive motor M is formed at one end in the longitudinal direction inside the case 5. The storage recess 52 is open to the lower surface of the case 5, and a fixing plate for the drive motor M is formed on the inner wall surface facing each other. A holding groove 521 for holding 81 is formed. The fixing plate 81 is held by the holding groove 521 to define the storage recess 52 into two chambers, front and rear, where the drive motor M is housed in the front chamber, and the drive motor M is housed in the rear chamber. M batteries (not shown) are stored. The lower opening of the storage recess 52 is then closed by a cover 523. The cover 523 is detachably attached to the storage recess 52 and has protrusions 523a protruding from both end faces, and the protrusions 523a engage the engagement holes 522 formed in the side walls of the storage recess 52. It is engaged with the shaft hole 524. A long groove 51 extending substantially over the entire length is formed in the lower front surface of the case 5 and is open forward and downward, and one end of the long groove 51 is connected to the storage recess 52.
and is closed by the bottom cover 9.
A plurality of notched recesses 512 are formed at appropriate intervals on the lower edge of the back wall 51A of the long groove 51, and a positioning shaft 511 is disposed approximately vertically at the other end of the long groove 51. 511 rotatably supports the rotary pulley 85.

The rear end of the upper lid 7 is rotatably supported by the rear end of the upper surface of the case 5, and the front end comes into contact with the upper front edge of the case 5 when the lid is closed. A notch having a length approximately equal to but slightly larger than the width of the wrap film 4 is formed in the upper edge of the front surface of the case 5, and this notch and the upper lid 7 form a slit-shaped film outlet 22A.

The bottom cover 9 is attached to the lower surface of the case 5 and closes the opening of the long groove 51.
a bottom plate 9a forming the same plane as the bottom surface of the bottom plate 9;
a front plate 9b that projects upward from the front end of the storage recess 51 and closes the front opening of the storage recess 51; and a plurality of engagement pieces that project from the rear of the front plate 9b at appropriate intervals. 9c, it is formed into an F-shape in side view, and an engaging portion 92 (Fig. 5) protruding from the upper end of the engaging piece 9c is connected to the long groove 51.
It engages with a notch recess 512 formed in the rear wall 51A of the. The upper end of the front plate 9b is bent forward substantially horizontally, and the tip thereof is further bent downward substantially at right angles to form an inverted L-shape in side view,
It has a guide groove 91 that opens downward. Front plate 9
A turret 10 equipped with a cutter 103 on the top surface of b
A part thereof is slidably fitted into the guide groove 91, and at the rear end of the tool rest 10, there is a groove between the upper end of the front plate 9b and the lower front surface of the case 5. It has an integral ear body 102 which is inserted into the long groove 51 through a gap 95 (FIG. 5) provided in the ear body 102, and an insertion hole 101 is formed through the ear body 102. Furthermore, a switch mounting hole 93 is provided at one end of the front plate 9b.

In FIGS. 3 and 7, reference numeral 8 denotes a transmission mechanism that transmits the rotation of the drive motor M to the tool post 10, and this transmission mechanism 8 includes a worm 82 and a worm 82 integrally provided on the output shaft of the drive motor M. , warm 8
2, a driving pulley 83 integrally provided with the worm wheel 831, a small-diameter correction pulley 84 rotatably disposed on the fixed plate 81 via a horizontal support shaft, and the positioning A rotary pulley 85 rotatably disposed on the shaft 511, the driving pulley 83, and a correction pulley 84.
and a string 86 that is stretched under tension between a rotating pulley 85, and one end of the string 86 is connected to the insertion hole 1 provided in the ear body 102 of the tool rest 10.
01 is inserted and fixed. Therefore, when the drive motor M is started and the rotation of its output shaft is transmitted to the driving pulley 83 via the worm 82 and the worm wheel 831, the string 86 runs, and the turret 10 is moved to the bottom. It can be moved along the guide groove 91 of the lid 9.

Reference numeral 111 denotes a micro switch that changes the rotational direction of the drive motor M when turned on or off, and this micro switch 111 is disposed in the opening 93 of the bottom cover 9 with an operating piece 111A protruding forward. Moreover, a push button 112 is integrally attached to the tip thereof.

In the automatic cutting device having such a configuration, when cutting the wrapped film 4, the wrapped film 4 is cut from the film outlet 22A of the case 5.
Pull out the required length and bend it downward so that it touches the front of the case 5, and then remove the micro switch 1.
11 to operate the micro switch 111. In this case, case 5
If it is fixed, the wrap film 4 can be pulled out with both hands. When the switch 111 operates, the drive motor M is activated by the signal, and the rotation of the output shaft is transmitted to the tool post 10 via the worm 82, worm wheel 831, driving pulley 83, string 86, etc. When the wrap film 4 is moved along the guide groove 91 of the bottom cover 9, the cutter 103 cuts the wrap film 4. When the wrap film 4 is completely cut, the wrap film 4 releases the pressed state of the push button 112, so the micro switch 111 returns to its original state. Returns and switches the rotation direction of the drive motor M. Therefore, the tool rest 10 moves back to the initial position and stops, and when the tool rest 10 stops, the drive motor M also stops and the cutting of the wrap film 4 is completed.

[Effect of the invention] As explained above, the wrap film automatic cutting device according to the present invention can
The structure is such that the drive motor is driven by a switch that is turned on and off, and the cutter is moved by this drive motor to cut the wrapped film, so the wrapped film can be cut automatically.
Also, since you only need to lightly press the wrap film onto the switch, if you fix the case in advance,
You can hold and cut the wrap film with both hands. Therefore, the cutting operation is much easier than with the conventional device shown in Figure 1, which cuts the film by pressing it against the cutter, and in addition, holding the wrapped film with both hands prevents the wrapped film from becoming tangled after cutting. This allows food to be covered reliably and in an attractive manner.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a conventional cutting device, FIG. 2 is a perspective view showing a conventional example of the cutting device, and FIG. 3 is an exploded perspective view showing an embodiment of the wrap film automatic cutting device according to the present invention. Fig. 4 is an external perspective view of the cutting device, Fig. 5 is a sectional view of the cutting device, and Fig. 6 is a sectional view of the cutting device.
The figure is a sectional view of another part of the cutting device, No. 7
This figure is a perspective view of the drive motor and its transmission mechanism, and FIG. 8 is a sectional view showing the wrap film in a cut state. 4...Lap film, 5...Case, 8...
Transmission mechanism, 10...Turret rest, 22A...Film outlet, 86...String body, 103...Cutter, 1
11... Micro switch, M... Drive motor.

Claims (1)

[Scope of utility model registration request] A case that is formed into a long box shape and has a slit-like filter outlet and that rotatably stores a roll-wound wrap film, and a case that is arranged at the lower front of the case so that it can be moved in the longitudinal direction of the case. The cutter is turned on by the cutter, a drive motor and its transmission mechanism disposed inside the case for reciprocating the cutter, and a wrap film disposed on the front of the case and pulled out from the film outlet of the case. . A wrap film automatic cutting device comprising: a switch that changes the rotational direction of the drive motor when turned off.