JP2602448Y2 - Sealer - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealer, and more particularly to an L-shape or the like capable of semi-automatically packing a product to be packed in a bag such as a synthetic resin film and closing a mouth. About the sealer.

[0002]

2. Description of the Related Art For example, on a work table called an L-type sealer, an article to be packaged from a bag mouth such as a synthetic resin film is packed, and the space between the mouth and an adjacent bag is sealed in an L-shape with a heater. At the same time, a shrink packer that performs a series of operations for shrinking a bag sealed in a tunnel portion called a shrink tunnel with hot air has already been put to practical use.

In the conventional L-shaped sealer, the operation until the heater is brought into contact with the seal portion around the bag body by pressing down the arm provided with the heater is performed manually, and the contact state is automatically determined by an electromagnet. After that, the seal portion is sealed with a heater by further pressing it firmly manually.

[0004]

In the conventional sealer as described above, the heater abutted on the seal portion by the attractive force of the electromagnet is pressure-bonded with a considerably strong manual pressing force to melt and bond the seal portion of the bag. Has to be performed, which requires a great deal of labor. The present invention has been made in view of such a problem, and a purpose thereof is to provide a sealer that can reduce labor of an operator, and can attain automation as much as possible to improve work efficiency. It is to provide.

[0005]

In order to achieve the above-mentioned object, a sealer according to the present invention comprises a sealer body having a sealing work table formed on an upper surface, and a shaft having one side openable and closable on the upper surface of the seal work table. A supported frame-shaped arm member, and a welding heater disposed on the lower surface side of the arm member;
A receiving table disposed at a corresponding position where the welding heater comes into contact on the sealing work table when the arm member is closed, and suction holding for holding a contact state between the receiving table and the welding heater; And a crimping means for further crimping the heater and the pedestal in contact with each other.

[0006] More preferred embodiments of the present invention include a device using an electromagnet as the suction holding means, a device in which the pressing device is driven in a pressing direction by a driving solenoid, or a device in which the arm member is used. Is operated by a drive motor.

[0007]

In the sealer according to the present invention constructed as described above, the arm member is provided with a welding heater provided on the arm member and a pedestal provided on the sealer body by a driving motor or manual operation. Is rotated downward to a position where the contact is made. At this contact position, the two heaters are sucked and held by the suction force of the suction holding means, whereby the arm member is also sucked and held at the closed position.

Further, in this suction holding state, the pressing means operates, and the arm member is further pressed against the sealer body side, whereby the heater and the pedestal are pressed against each other with a strong pressing force. Melt bonding of the seal portion is performed in the pressure-bonded state.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view schematically showing the entirety of an L-shaped sealer as one embodiment of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is an enlarged perspective view of a main part of FIG. L-shaped sealer 1 in the illustrated example
, And a sealer main body 10 made of a box-shaped frame member having a top plate and placed on the support base 3. The sealer body 1
Reference numeral 0 denotes a film web mounting portion 20 for supporting the film from the film web W in which a two-fold film made of synthetic resin is wound in a coil shape, and a synthetic resin film fed from the film web W into a bag shape. And a sealing section 40 for performing fusion bonding of a seal section between the mouth of the packed bag and an adjacent unprocessed film.

The film web mounting section 20 is located on the opposite side of the sealer body 10 from the seal section 40 (FIG. 1, FIG.
2), two support members 21 and 22 extending in the horizontal direction and a pair of cylindrical rollers that are provided between the support members 21 and 22 and rotatably support the film web W. 23, 24, and are provided extending vertically upward from the end of the sealer main body 10 to prevent a horizontal displacement of the bi-fold film from the main body film web W (to the left in FIG. 2). And a stopper member 25.

The packing work section 30 is formed by forming a packing work table 31 on the top of the sealer main body 10 for a worker to carry out packing work of an article by making a synthetic resin film into a bag shape. You. The seal part 40
Is composed of a seal working table 41 formed on the top of the sealer main body 10 and a frame-shaped member having a heater (described later) disposed on the lower surface thereof. Arm member 50, suction holding means 60, 60 for holding the state when the arm member 50 is closed for sealing the packed bag, and the arm member 50 to the sealing work table 41. And pressure bonding means 70, 70 for pressing and holding more strongly.

The arm member 50 includes left and right horizontal arms 5.
1 and 52 and an arm main body 55 of a U-shaped frame member composed of a vertical arm 53, and an arm erected between the ends of the left and right horizontal arms 51 and 52 so as to cover an opening side of the arm main body 55. It comprises a shaft 56 and arm mounting members 57 provided on the sealing work table 41 and supporting the arm shaft 56. The vertical arm 53 is provided with a U-shaped handle portion 58, and also provided with iron knobs 54, 54 as suction pieces attracted by an electromagnet described later. As shown in FIG. 2, an L-shaped electric heater H is attached to the lower surfaces of the vertical arm 53 and the horizontal arm 52 on the film web W side for melting and bonding the sealing portion of the bag body. on the other hand,
As shown in FIG. 1, a receiving table 90 is provided on the sealing work table 41 at a position where the arm main body 55 overlaps the heater H when the arm body 55 comes into contact with the sealing section.
The arm shaft 56 and the left and right horizontal arms 5
1 and 52, a return spring 5 that constantly urges the arm body 55 in a direction of lifting and rotating the arm body 55 upward against its own weight with the arm shaft 56 as an axis.
9, 59 are interposed. Further, a shaft cover 43 is provided around the arm shaft 56. The horizontal arm 52 on the film web W side is used.
The heater H and the receiving table 90 provided in the section are disposed so that the packed bag side and the unprocessed film side can be welded and sealed, and can be separated.

Next, the details of the suction holding means 60, 60 and the pressure bonding means 70 will be described. As shown in FIG. 3, the suction means 60 includes a cylindrical electromagnet 61 whose axis is externally fitted and fixed to an upper end of a drive shaft 80 extending vertically downward, and the knob 54. The knobs 54, 54 are sucked downward by a suction action when a voltage is applied to the electromagnets 61, 61 arranged at the left and right positions on the front surface of the sealer main body 10, and the heater H and the pedestal 90 come into contact with each other. The arm body 55 is held at the end.

The crimping means 70 comprises the drive shaft 80 and a drive solenoid 73 having a movable iron core 72 linearly moved downward by a magnetic attraction force obtained by energizing a built-in coil. Movable iron core 7
2 and a large-diameter portion 8 formed below the drive shaft 80
Oa is eccentrically connected to each other via a connection plate 71. On the other hand, on the front surface of the sealer main body 10, a mounting bracket 8 in which loose fitting holes 82a and 83a having a diameter larger than the diameter of the drive shaft 80 is formed in the center thereof.
2, 83 are attached in a vertically separated manner,
The drive shaft 80 is vertically movably supported by being inserted into the loose fitting holes 82a and 83a. A coil spring 86 for absorbing shock is interposed between a lower surface of the electromagnet 61 and a receiving seat 85 disposed on an upper surface of the upper mounting bracket 82.

Further, a drive motor M is provided which is directly connected to the arm shaft 56 and drives the arm body 55 to rotate in the closing direction, so that the closing operation of the arm body 55 can be automated. This drive motor M
Can be operated by a foot switch (not shown). Next, the operation of the sealer according to the embodiment of the present invention will be described.

First, an operator performs packing on the packaging work table 31 by wrapping the product in a bag shape made of a synthetic resin two-fold film. The seal portion between the mouth of the bag body packed in this way and the adjacent unprocessed film is positioned on the L-shaped receiving table 90 disposed on the sealing work table 41 so that the set can be formed. Done. Next, when the operator operates the foot motor (not shown) to drive the drive motor M, the arm body 55
The knob 5 is driven by rotation of the arm shaft 56.
4 and 54 are rotated downward until they contact the upper surfaces of the electromagnets 61 and 61. In this contact position,
By the attraction force of the electromagnets 61, 61 that have been energized in advance,
The knobs 54 are attracted to the upper surfaces of the electromagnets 61, whereby the arm body 55 is attracted to and held by the seal portion, and the drive motor M is stopped.

Furthermore, sensed by the limit switch (not shown) the suction holding state, thereby actuating the driving solenoid 73, the movable iron core 72 by magnetic attraction force is made to linear motion in the downward direction, whereby, The drive shaft 80 is linearly moved downward against the urging force of the coil spring 86. In this way, the arm body 55 is strongly pressed against the seal portion, whereby the seal portion held between the heater H and the pedestal 90 is pinched with a strong pressing force. In this crimped state, the seal portion is attached to the heater H
Is melted and bonded.

Subsequently, when the timer circuit of the control device (not shown) times out, the operations of the drive solenoids 73, 73 and the electromagnets 61, 61 are stopped, and the knobs 54, 54 are moved to the electromagnets 61, 61. When released, the return spring 59 returns the arm body 55 to the original open position. Thus, the sealed bag is sent to a shrink tunnel (not shown),
There, it is shrunk (shrinked) by hot air.

Although one embodiment of the present invention has been described in detail, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the present invention described in the claims for utility model registration. Design changes can be made. For example, in the illustrated example, the rotation of the arm body 55 is performed using the motor M, but the opening and closing operation may be performed manually. In that case,
The operator can perform an operation by holding the handle portion 58.

[0020]

As will be understood from the above description, according to the present invention, it is possible to reduce the labor of the worker, to automate as much as possible, and to improve the work efficiency.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing the entirety of an L-shaped sealer as one embodiment of the present invention.

FIG. 2 is a front view of the L-shaped sealer shown in FIG.

FIG. 3 is an enlarged perspective view of a main part of the L-shaped sealer shown in FIG. 1;

[Explanation of symbols]

H Welding heater M Drive motor 10 Sealer main body 41 Seal work table 50 Arm member 54 Suction piece (knob) 60 Suction holding means 61 Electromagnet 70 Crimping means 73 Driving solenoid 90 Cradle

──────────────────────────────────────────────────続 き Continuing on the front page (72) Kazunari Oyuri 1-7-2, Suehirocho, Ome-shi, Tokyo Incorporated within Kyoritsu Co., Ltd. Address 2 Kyoritsu (58) Field surveyed (Int. Cl. ⁷ , DB name) B65B ⁷ /00-7/28 B65B 11/00-11/58 B65B 51/00-51/32

Claims (4)

(57) [Scope of request for utility model registration] 1. A seal workbench top and sealer body (41) is formed (10), said seal worktable (41)
Frame-shaped arm member with one side pivotally supported on the upper surface
And (50), and welding heater was allowed disposed on the lower surface side of the arm member (50) (H), said arm member (5
0) and cradles the sealing worktable (41) the welding heater on (H) is disposed at a position corresponding to the abutment when is closed (90), wherein for welding the receiving platform (90) heater
(H) suction holding means (6 ) for holding the contact state with (H).
(0) , wherein the crimping means (70) for further crimping the heater (H) and the pedestal (90) in contact with each other is provided. 2. The electromagnets (61, 61) provided on the sealer body (10) side, wherein the suction holding means (60) is provided.
And a suction piece (5 ) provided on the arm member (50) side.
4. The sealer according to claim 1, comprising: (4 , 54) . 3. The sealer according to claim 1, wherein said pressing means (70) is driven in a pressing direction by a driving solenoid (73) . 4. An opening and closing operation of the arm member (50) ,
The sealer according to claim 1, wherein the sealer is operated by a drive motor (M) .