JP2521246Y2 - Sealing device for bag mouths, etc. - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a bag mouth sealing device, more specifically, a bag mouth of a plastic bag or a plurality of stick-shaped products to be sealed. The present invention relates to an improvement of a sealer for bag mouths, etc., in which a tape is bundled and sealed.

[Prior Art] Generally, as a sealing device for bag mouths of this type, a roll body holding portion for rotatably holding a roll body of an adhesive tape,
Tape feeding means having a recess for guiding the adhesive tape pulled out from the roll body into the sealed body guiding path and enclosing the adhesive tape in the bag mouth as a sealing body, and the tape feeding means in cooperation with the tape feeding means. An elastic member for enclosing the adhesive tape in the bag mouth and fixing the pull-out side of the adhered adhesive tape, and a sealed body guiding member located below the rear side of the tape supply means in the sealed body guiding path. It is known to have a tape cutter protruding and retractable in the road.

To seal the bag mouth using this sealing device, the tip of the adhesive tape pulled out from the roll body is placed on the tape supply means with the adhesive layer facing upward, and a plastic bag, For example, after storing the desired product in a bag of polyethylene, vinyl, nylon, etc., converge the mouth and twist it 3 or 4 times, holding both ends of the twisted part with both hands to prevent the twisting from returning. The body to be sealed is pushed down rapidly from the mouth of the guideway. Then
The lower part of the twisted portion hits the adhesive layer of the adhesive tape, and this enters the recess of the tape supply means, the tape supply means is rotated as it descends, and the adhesive tape is pulled out from the roll body as the tape supply means rotates, Further, the tape is surrounded by the twisted portion, and at this time, the tape is attached by the pressing action of the elastic member. Next, when the adhesive tape is held between the tape supply means and the elastic member, the cutter projects into the sealed body guiding path to cut the pull-out side of the adhesive tape and complete the sealing operation.

[Problems to be solved by the invention] However, in this type of conventional sealing device for bag mouths and the like, since it is necessary to strongly push down the bag mouth in a twisted state, it is very difficult to seal a large number of bag mouths. There is a problem that it takes a lot of labor and time and that skill is required to surely perform sealing. Further, since the structure is such that the adhesive tape is held by the elastic member against the tape supply means during cutting, the elastic force of the elastic member decreases due to long-term use, and reliable holding cannot be performed. There was a problem that cutting could not be performed reliably. Furthermore,
Since the tape supply means is not fixed securely, there is a disadvantage that the recess of the tape supply means cannot reliably wait in the guided path of the sealed body. As a means for solving this inconvenience, it is conceivable that an elastic member is engaged with the tape supplying means so that the recess faces the guide path of the sealed body. There is a problem that the elastic force of the elastic member is fatigued due to long-term use, and the standby position cannot be reliably ensured.

The present invention has been made in view of the above circumstances, and in order to solve the above problems, it is possible to easily seal the sealed objects such as bag mouths in a tightly bound state without the need to press it firmly, and surely to make the bag mouths etc. It is intended to provide a sealer for a bag mouth or the like which can be attached with an adhesive tape.

[Means for Solving the Problems] In order to achieve the above object, a sealing device for bag mouths and the like of the present invention has a roll body holding portion that rotatably holds a roll body of an adhesive tape, and is pulled out from the roll body. And a tape supplying means having a recess for guiding the adhesive tape into the sealed body guiding path and enclosing the sealed tape in the sealed body to be sealed, and behind the tape supplying means in the sealed body guiding path. It is premised on a sealer for a bag mouth and the like which has a tape cutter which is located at a position and which protrudes into and out of the guided path of the sealed body. In addition, a switch piece for detecting the intrusion of the sealed body on the front side of the tape supplying means in the sealed body guiding path and transmitting the signal to the driving means is provided. Secondly, in addition to the first sealer, a tape cutter drive means for controlling the operation of retracting the tape cutter to and from the sealed body guiding path is provided, and the tape supplying means in the sealed body guiding path. And a tape cutter switch piece for detecting the intrusion of the object to be sealed and transmitting the signal to the tape cutter driving means.

In this invention, the tape supply means may be of any form as long as it supplies a pressure-sensitive adhesive tape pulled out from the roll body into the sealed body guiding path and has a recess for surrounding the pressure-sensitive adhesive tape in the sealed body. For example, it may be a feed wheel such as a star wheel provided with recesses at appropriate intervals on the outer circumference, or an electric fan formed by a part of the star wheel, and Is
A lever-shaped member having a recess at the tip may be used.

The drive unit may be any drive unit as long as it controls the rotation of the tape supply unit, and is formed by, for example, a motor. In this case, the motor is preferably equipped with a brake, and is preferably a stepping motor capable of rotating in forward and reverse directions and intermittently rotating at a constant angle. Further, as the power transmission means from the drive means to the tape supply means, for example, a transmission mechanism such as a gear mechanism or a timing belt can be used.

The tape cutter driving means may be of a swing type or a direct acting type as long as it moves the tape cutter into and out of the sealed body guiding path. Although it may be formed by means, it is preferably formed by the driving means.

In addition, the above-mentioned switch piece is optional as long as it has a function of detecting the entry of the sealed body into the sealed body guiding path and transmitting the detection signal to the driving means or the tape cutter driving means. For example, a micro switch or a push switch can be used.

[Operation] With the above-described configuration, the adhesive tape is pulled out from the roll body held by the holding portion, and the adhesive layer of the adhesive tape is set on the tape supply means with the adhesive layer facing up. When it is inserted into the sealed body guideway,
The switch piece operates to detect the intrusion of the sealed body and transmits the detected signal to the driving means. The tape supplying means is rotated by the driving means which receives the detection signal to guide the adhesive tape and the sealed object into the recess, and the adhesive tape is wrapped around the outer periphery of the sealed object, and then the adhesive tape is attached. The sealed bodies are bundled and sealed, and the sealed bodies are sent to the rear side of the sealed body guiding path. It is possible to remove the sealed body from the sealed body guiding path after the roll body side of the adhesive tape attached to the sealed body sent to the rear side of the sealed guiding path is cut by the tape cutter. .

Further, a drive means for the tape cutter that controls the tape cutter to move in and out of the sealed body guiding path is provided to detect the intrusion of the sealed body at the position behind the tape supply means in the sealed body guiding path, and to output the signal. By providing a tape cutter switch piece that transmits to the tape cutter drive means, the tape cutter switch piece detects the intrusion of the sealed body sent from the tape supply means, and the signal is sent to the tape cutter drive means. The tape cutter driving means, which has been transmitted and receives the detection signal, operates the tape cutter to cut the adhesive tape.

[Embodiment] The following describes the next embodiment of the present invention with reference to the drawings.

First Embodiment FIG. 1 is a schematic sectional view of a first embodiment of the bag mouth sealing device of the present invention, and FIG. 2 is a plan view of FIG.

The sealer for bag mouths and the like of the present invention comprises a sealer main body 10 having a holding portion 12 for a roll body A of an adhesive tape B and a sealed body guiding path 14 that opens upward and to the front side, and a sealed body. The adhesive tape B mounted near the opening of the guide path 14 and drawn from the roll A is guided into the sealed body guide path 14 and has a recess 22 for surrounding the adhesive tape B in the sealed body C. Tape supply means 20, drive means 30 for controlling the rotation of the tape supply means 20, and a sealed body guiding path for the sealed body C located on the upper front side of the tape supply means 20.
A switch 40 for detecting the intrusion into the inside 14 and transmitting the detection signal to the driving means 30, and a tape cutter 50 protruding so as to be retractable at the rear side of the sealed body guiding path 14 constitute a main part. ing.

The sealer main body 10 includes a pair of side plates 13, 1 facing each other to form a gap 11 for accommodating the roll body A, the tape supply means 20, and the like.
It is formed by 3 and the roll body A is on the upper part of one end.
With the insertion groove that rotatably holds the shaft a,
12 is formed, and a sealed body guiding path 14 that opens upward is provided on the other end side of the sealer main body 10 in an inclined shape toward the lower side. A circular opening 15 for taking out the sealed body which is bulged from the sealed body guiding path 14 is provided therein. In addition, at the lower end of the side plate 13, a leg portion 16 that is bent outward from the side plate 13 is provided,
A rubber non-slip member 17 is attached to the leg portion 16.

The tape supply means 20 has a rotating shaft 21 rotatably supported by a bearing groove 18 provided in the vicinity of the body guiding path 14 to be sealed.
Is formed with a star wheel having a plurality of (8 in the drawing shows) circular arc-shaped recesses on its outer peripheral surface.
22 and 22 are formed at equal intervals. The adhesive layer of the adhesive tape pulled out from the roll body A is placed on the outer peripheral surface of the star wheel 20 configured as described above,
Further, the rotation of the star wheel 20 causes the outer peripheral surface to come into contact with the elastic plate 24 projecting into the sealed body guiding path 14 so that the adhesive tape B surrounded by the sealed body C is attached. In this case, the elastic body 24 is not provided, and the sealed body guiding path is provided.
Protruding part (not shown) is provided on the inner surface of 14 to make the star wheel.
You may make it contact | abut with the outer peripheral surface of 20, or
Make the switch piece 40 elastic so that the recess of the star wheel 20
You may make it press toward 22.

The tape supply means 20 is formed of a stepping motor capable of rotating in the forward and reverse directions, and a driven gear 34 meshing with a drive gear 32 mounted on the drive shaft 31 of the motor 30 is mounted on the rotary shaft 21 of the star wheel 20. The rotation from the motor 30 is transmitted to the star wheel 20.
The motor 30 has a built-in braking device (not shown) that stops the star wheel 20 after rotating the star wheel 20 by a certain angle.

Further, the switch piece 40 is a micro switch which is arranged on the upper opening side of the star wheel 20 in the sealed body guiding path 14 and detects the intrusion of the sealed body C inserted into the sealed body guiding path 14. As shown in FIG. 3, when the switch piece 40 is actuated, the relay R1 is actuated and the relay contact R1 ′ is connected, so that the motor 30 is normally rotated (clockwise in the drawing). It is like this. In FIG. 3, 41 is a condenser and 42
Is a connection terminal on the power supply side.

On the other hand, the tape cutter 50 holds the side plate 13 with the pivot pin 53 so that the one arm 51 projects into the sealed body guiding path 14.
It is fixed to the other arm portion 52 of a vertically crankable bell-crank-shaped actuating body 54 pivotally mounted on. The operating body
One end of 54 is attached to the other end of a tension spring 55 that is attached to the protrusion 19 that is provided on the sealer main body 10 so that the tape cutter 50 is always retracted from the sealed body guiding path 14. There is. The tape cutter 50 configured in this manner is inserted into the sealed body guiding path 14 and the sealed body C pushes down one arm 51 against the elastic force of the tension spring 55, whereby the tape cutter 50. Is the sealed body taxiway 14
The adhesive tape B can be cut into the inside by rushing in.

Next, an operation mode of the bag mouth sealing device of the present invention will be described.

First, the adhesive tape B drawn from the roll body A held in the roll body holding portion 12 is set in the opening of the sealed body guiding path 14 via the star wheel 20 with the adhesive layer facing upward. In this state, for example, after accommodating a desired article in a plastic bag, the bag mouth C, which is the sealed body, is converged, twisted three or four times, and the twisted portion is held by both hands to guide the sealed body. When it is inserted into the recess 22 of the star wheel 20 through the opening, the entry of the bag mouth C is detected by the switch piece 40, and the detection signal is transmitted to the motor 30. Then, the motor 30 rotates, the rotation is transmitted to the star wheel 20 via the drive gear 32 and the driven gear 34, and the star wheel 20 rotates counterclockwise in the figure, and at the same time, the bag mouth in the recess 22 is closed. The adhesive tape B is wrapped around C, and the outer circumference of the star wheel 20 is elastic plate 24.
Adhesive tape B is attached in a state of being in contact with. On this occasion,
Since the outer periphery of the star wheel 20 is in contact with the switch piece 40, the star wheel 20 rotates by a certain angle, sends the bag mouth below the sealed body guiding path 14, and then is stopped by the brake device. Prepare to insert the bag mouth C. on the other hand,
The bag mouth C fed below the sealed body guiding path 14 abuts on the arm portion 51 of the actuating body 54 of the tape cutter 50 and the tension spring.
The actuation body 54 is rotated counterclockwise in the figure against 55. Then, the tape cutter 50 plunges into the sealed body guiding path 14 and cuts the adhesive tape B held between the roll body side by the star wheel 20 and the elastic plate 24, and the sealed bag mouth C is taken out. It can be taken out from the opening 15.

Second Embodiment FIG. 4 is a schematic sectional view of the second embodiment of the present invention.

The sealing device for the bag mouth and the like of the second embodiment is a case in which the adhesive tape can be automatically cut in addition to the automatic feeding of the bag mouth into the sealed body guiding path. That is, the drive gear 32 mounted on the drive shaft 31 of the motor 30 is connected to the intermediate gear 35.
The driven gear 37 for the tape cutter, which meshes via the, is fixed to the pivot pin 53 of the actuating body 54 of the tape cutter 50, and the intermediate gear 35 is used when the motor 30 rotates in the reverse direction (counterclockwise in the figure). The driven gear 37 for the tape cutter is rotated counterclockwise in the figure so that the tape cutter 50 is projected into the sealed body guiding path 14, and the lower position of the star wheel 20 in the sealed body guiding path 14 In this case, a tape cutter switch piece 44 (micro switch) for detecting the intrusion of the bag mouth C and transmitting the detection signal to the motor 30 is arranged. In this case, the motor 30
The second drive gear 36 is attached to the drive shaft 31 via a one-way clutch (not shown) so that the second drive gear 36 does not rotate during normal rotation of the motor. In order to prevent the gear 32 from rotating, a first drive gear is similarly attached to the drive shaft 31 via a one-way clutch (not shown).
Need to wear 32. Also, as shown in FIG. 5 in the electric circuit diagram of the second embodiment, the tape cutter switch piece 44 and the tape cutter relay R2 are connected in series to the electric circuit of the first embodiment, and the relay R2 The relay contact R2 'which is operated by excitation may be connected in parallel with the relay contact R1', and the switching element R2 "which is operated by excitation of the relay R2 may be connected to the forward / reverse switching circuit contact 46.

With the above configuration, the switch piece 40 detects the entry of the bag mouth C inserted into the sealed body guiding path 14 and the detection signal is transmitted to the motor 30 as in the first embodiment. The star wheel 20 is normally rotated by driving the motor 30, and the star tape 20 is fed below the sealed body guiding path 14 with the adhesive tape B surrounded by the bag mouth C. Then, the tape cutter switch piece 44 detects the invasion of the bag mouth C, and the detection signal is transmitted to the motor 30 so that the motor 30 rotates in the reverse direction. The reverse rotation of the motor 30 is performed from the second drive gear 36 to the intermediate gear.
It is transmitted to the driven gear 37 for the tape cutter via 35, the tape cutter 50 is thrust into the sealed body guiding path 14, and the roll body side of the adhesive tape B is cut. The tape cutter 50 after cutting the adhesive tape B can be returned to the original position by the elastic force of the tension spring 55.

In the first and second embodiments, the power transmission from the motor is performed by the gear mechanism, but the transmission means does not necessarily have to be the gear mechanism, and a timing belt or the like can be used. Further, in the above embodiment, the case where the star wheel 20 and the tape cutter 50 are rotated by one motor has been described, but it goes without saying that the star wheel 20 and the tape cutter 50 may be rotated by separate driving means. . Further, in the above embodiment, the case where the sealed body is the mouth of a plastic bag has been described, but the same applies to a case where a plurality of rod-shaped products or the like are bundled and the adhesive tape is adhered and sealed. Of course, it can be used. Furthermore, in the above-described embodiment, the case where the sealed body is inserted into the sealed body guiding path 14 from the upper side to the lower side has been described, but a method of inserting the sealed body laterally from the side is also possible.

[Advantages of the Invention] As described above, the bag mouth sealing device of the present invention is configured as described above, so that the following effects can be obtained.

1) According to the sealing device for the bag mouth and the like according to claim 1, the sealing means is provided with a drive means for controlling the rotation of the tape supply means, and the sealed body is sealed in front of the tape supply means in the sealed body guiding path. Since it is equipped with a switch piece that detects the signal and transmits the signal to the driving means, it is not necessary to insert the sealed body into the sealed body guiding path with an unreasonable force or timing, and a simple operation is possible. Thus, it is possible to securely seal the object to be sealed such as the bag mouth with the adhesive tape attached.

2) According to the bag mouth sealing device according to claim 2, in addition to the bag mouth sealing device according to claim 1, a tape cutter drive that controls the operation of the tape cutter to move in and out of the sealed body guiding path. And a tape cutter switch piece for detecting the intrusion of the object to be sealed and transmitting the signal to the tape cutter driving means at the position behind the tape supplying means in the path for guiding the object to be sealed. In addition to the above 1), the adhesive tape after sealing can be cut quickly and reliably.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a first embodiment of a bag mouth sealing device of the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is an electric circuit diagram of the first embodiment, and FIG. Is a schematic sectional view of a second embodiment of the bag mouth sealing device of the present invention, and FIG. 5 is an electric circuit diagram of the second embodiment. Explanation of symbols (10) …… Seal device main body (12) …… Roll body holding part (14) …… Seal body guide path (20) …… Star wheel (tape supply means) (22) …… Concave (30) ) …… Motor (driving means) (40) …… Switch piece (44) …… Tape cutter switch piece (50) …… Tape cutter

Claims (2)

(57) [Scope of utility model registration request] 1. A roll body holding portion for rotatably holding a roll body of an adhesive tape, and an adhesive tape drawn out from the roll body, guided to a sealed body guiding path, and adhered to a sealed body to be sealed. A bag mouth having a tape supply means having a recess for enclosing the tape and a tape cutter located behind the tape supply means in the sealed body guiding path and projecting to be retractable in the sealed body guiding path. The sealer for equality or the like is provided with a drive means for controlling the rotation of the tape supply means, detects the intrusion of the sealed body on the front side of the tape supply means in the sealed body guiding path, and outputs the signal thereof. A sealer for a bag mouth or the like, comprising a switch piece for transmitting to a drive means. 2. The sealer for bag mouth etc. according to claim 1, further comprising a tape cutter driving means for controlling the movement of the tape cutter into and out of the sealed body guiding path, and the tape in the sealed body guiding path. A sealer for a bag mouth or the like, comprising a tape cutter switch piece for detecting an intrusion of an object to be sealed at a position behind the supply means and transmitting the signal to the tape cutter drive means.