JPH08217021A - Single bag supporting device for automatic filling-packaging machine - Google Patents

Abstract

PURPOSE: To surely open an opening of a single bag to fill contents into the bag at a fixed volumetric rate. CONSTITUTION: In a single bag supporting device of an automated filling packing machine wherein under conditions that a sinle bag 16 is supported and its opening 17 is opened, contents are filled into the bag 16 and thereafter the opening 17 is tightly closed by thermal bonding, supporting members 15a, 15b each consisting of fingers 8, 8 disposed, spaced apart from each other, movably along the opening 17 of the bag 16 and suction pads 4, each of which is disposed between both of the fingers 8, 8 so as to be movable in a direction normal to the opening 17 and connected to an air suction device are disposed on the opposite sides of the opening 17 so as to be opposed to each other, with the opening 17 between. The suction pad 4 provided in the member 15a is rotatably supported along the opening 17 and connected to a spring 23 so that the front surface of the pad 4 is inclined with respect to the opening 17 and resiliently held.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single bag supporting device for an automatic filling and packaging machine which automatically fills a single bag with contents and heat-seals the opening for packaging.

[0002]

2. Description of the Related Art Generally, in the case of automatically packaging foods or the like, a bag to be wrapped is formed by continuously pulling out a plastic film wound in a roll shape, rolling both ends along the longitudinal direction inward, and stacking both ends. After heat-sealing the overlapped portion in the vertical direction to form a tubular shape, heat-sealing in the horizontal direction to form a bag, and in this state, quantitatively fill the contents from the upper opening. From the above, the opening is laterally heat-sealed and sealed,
Next, this is cut and separated one by one.

However, the bag formed continuously while filling the contents from the plastic film as described above is heat-sealed in a state where three films are superposed at the central portion where the upper and lower parts are heat-sealed. The joining of these parts may not be reliable, and sufficient airtightness may not be obtained. For example, when packaging a large number of artificially cultivated nameko, since the nameko has a large amount of water, if the airtightness is poor, water and slime may leak from the heat-sealed seal portion. In addition, there is a problem that air enters inside and the freshness of nameko deteriorates and the shelf life deteriorates. Also, since consumers touch the bag with their hands and buy it easily, it is easy to feel pain. The entire lot of one box may be returned.

Further, in an apparatus for filling while continuously forming a bag from a plastic film, if the mechanism for forming the bag fails, the apparatus as a whole cannot be used even if the filling portion can be operated, so that it takes time to repair it. It took a long time, and sometimes it was necessary to discard the nameko, which is especially important for freshness.

For this reason, when packaging nameko, a single bag having a U-shaped roll-shaped film and heat-sealing the overlapped ends in the longitudinal direction to open the upper part has come to be used. . Since this single bag has a heat-sealed portion only at a portion where two films are overlapped, it is reliably bonded and has excellent airtightness. Usually, a bag maker makes a single bag, and this single bag is set in an automatic filling and packaging machine at a nameko production farm, and this single bag support device supports the single bag and automatically expands its opening. After filling with Nameko, a heater has been used in which the opening is heat-sealed laterally with a heater to automatically seal.

As shown in FIG. 7, the conventional single bag supporting device provided in this automatic filling and packaging machine has a slide piece 3 on a vertical rail 2 provided at the center of a cross-shaped guide rail 1.
a is provided slidably forward and backward, and a suction pad 4 connected to an air suction device (not shown) is mounted thereon. Further, slide pieces 3b, 3b are provided on the left and right lateral rails 6 of the cross-shaped guide rail 1 so as to be slidable left and right, and L-shaped fingers 8 and 8 are mounted on the slide pieces 3b, 3b. Further, the central slide piece 3a and the slide pieces 3b, 3b on both sides thereof are connected by rotatable arms 9, 9.

Further, a bracket 11 is connected to an end portion of the vertical rail of the cross-shaped guide rail 1, and a cylinder 12 attached thereto is connected to the central slide piece 3a. When the slide piece 3a moves back and forth, the slide pieces 3b and 3b are connected to this by the arms 9 and 9, and the slide pieces 3b and 3b move left and right, and the interval can be adjusted. The bracket 11 is connected to another cylinder 13. As shown in FIG. 8, the supporting members 15 and 15 thus configured are arranged on both sides of the opening 17 of the single bag 16 to form a single bag supporting device.

In the conventional single bag supporting device, the single bag 16 is conveyed between the supporting members 15, 15 by a single bag pulling device (not shown). When the cylinder 13 advances and the bracket 11 advances in this state, the cross-shaped guide rail 1 integrally supported with the cylinder 13 also advances, and the suction pad 4 slidably mounted on the guide rail 1 and the L-shaped guide pad. The fingers 8 and 8 move forward to sandwich the opening 17 of the single bag 16 from both sides as shown in FIG.

Thereafter, when the cylinder 12 is contracted, as shown in FIG. 9, the central slide piece 3a retracts on the central vertical rail 2 of the cross-shaped guide rail 1. Since the suction pads 4 and 4 attached to the slide piece 3a are connected to an air suction device (not shown), the central portion of the opening 17 is sucked from both sides. On the other hand, when the central slide piece 3a retracts, the left and right slide pieces 3b, 3b connected by the arms 9, 9 are guided by the lateral rail 6 of the cross-shaped guide rail 1 and pulled toward the center side. The distance between the two becomes narrower. Slide pieces 3b, 3b facing each other at this time
Since the L-shaped fingers 8 attached to the position come closer to the center side while sandwiching both ends of the opening 17, the opening 17 opens. After filling the contents from a hopper (not shown) while supporting the opening 17 of the single bag 16 in an open state in this manner, the opening 17 is heated by a heater to be heat-sealed and sealed. .

However, in the conventional single bag supporting device, the single bag 16 may not be surely opened. This is due to the opening 17 when static electricity remains in the single bag 16 or when water is attached.
Because they will not come into close contact with each other. Also, when the single bag 16 is cut with a blade, the opening 17 may not open even when the blade 17 is poorly cut and the opening 17 is in close contact, or when it is folded due to deformation during storage. . in this way,
If nameko or the like was supplied from the hopper in a state where the opening 17 was not sufficiently opened, the nameko fell without being filled, resulting in insufficient packaging, and the trouble of the dropped nameko was troublesome.

[0011]

DISCLOSURE OF THE INVENTION The present invention eliminates the above-mentioned drawbacks and provides a single bag supporting device for an automatic filling and packaging machine capable of reliably opening the opening of the single bag to quantitatively fill the contents. It is a thing.

[0012]

A single bag supporting device of an automatic filling and packaging machine according to claim 1 of the present invention supports a single bag and fills the contents with its opening opened, In a single bag supporting device of an automatic filling and packaging machine that heat-seals and hermetically seals the opening, fingers arranged movably along the opening of the single bag and spaced apart from each other, and an opening between the fingers. Suction pads provided on one of the support members, with support members that are movably arranged in orthogonal directions and that are composed of suction pads that are connected to an air suction device and that are arranged facing each other so as to sandwich the opening. Is rotatably supported along the opening, and is connected to a spring to elastically hold the front surface of the suction pad obliquely with respect to the opening.

Further, in the single bag supporting device according to the present invention, the suction pad provided on one of the supporting members in the device is rotatably supported along the opening, and the front surface of the suction pad is moved along the opening. It is characterized in that it is provided with a solenoid or a cylinder for rotating it.

[0014]

According to the single bag supporting device of the automatic filling and packaging machine of the present invention, when the single bag is conveyed by the single bag pulling device between the supporting members arranged facing each other, the suction pad of one supporting member is removed. Since the front surface is elastically held obliquely with respect to the opening by the spring, the suction pad first contacts the side surface of the opening obliquely. When the suction pad is further extended, both ends of the opening are pinched by the fingers, and the suction pad which is rotatably and elastically supported by the spring hits the opposing suction pad, so that the suction pad rotates while facing the front. At this time, the action of shifting one side of the opening portion in the lateral direction works, and a gap is formed in the opening portion which is in close contact. After this,
The suction pad retracts while sucking the central portion of the opening, and the fingers provided on both sides of the opening are pulled toward the center while narrowing the gap between them, and the opening greatly opens.

Further, in the single bag supporting device according to the second aspect, a solenoid or an air cylinder is connected to the suction pad, and the device is held obliquely with respect to the opening until it hits the single bag. The air cylinder is extended and rotated with the suction pad facing the front, and one side of the opening is laterally displaced to form a gap.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. In this single bag supporting device, a slide piece 3a is slidably provided back and forth on a vertical rail 2 provided at the center of a cross-shaped guide rail 1, and a suction pad connected to an air suction device (not shown) is provided thereon. 4 is attached. The suction pad 4 is attached to the front end of the plate 19, and the base end side is rotatably attached to the slide piece 3a by a shaft 20.

A curved guide hole 21 is opened in the middle of the plate 19, and a pin 22 penetrating therethrough is formed on the slide piece 3.
It is fixed to a and defines the rotation range of the suction pad 4. The bottom of the plate 19 on the tip side and the tip of the slide piece 3a are connected by a spring 23, and the front surface of the suction pad 4 is elastically held obliquely on the spring 23 side. A cylinder 12 that moves the slide piece 3a back and forth,
L-shaped finger 8 and slide piece 3 that supports it
b, the structure of the cylinder 13 for moving the cross-shaped guide rail 1 back and forth is similar to that of the conventional structure shown in FIG. 7, and therefore its explanation is omitted. In this way, suction pad 4
The support member 15a rotatably provided and the support member 15b having the conventional structure to which the suction pad 4 is fixed are arranged opposite to each other on both sides of the opening 17 of the single bag 16 as shown in FIG. A single bag support device is formed.

In this apparatus, the single bag 16 is conveyed between the support members 15a and 15b by a single bag pulling device (not shown). In this state, as shown in FIG. 3, one support member
Since the front surface of the suction pad 4 of 15a is elastically held obliquely with respect to the opening 17 of the single bag 16,
By the extension of 13, the suction pad 4 first strikes the side surface of the opening 17 obliquely. When it further extends, both ends of the opening 17 are sandwiched by the fingers 8 and the suction pad 4 rotatably and elastically supported by the spring 23 is the suction pad on the opposing support member 15b side. Since it hits against 4 through the single bag 16, it turns while facing the front as shown in FIG. 4, and at this time, the action of shifting one side of the opening 17 in the lateral direction works, and the opening 17 that has been in close contact A gap 24 is formed.

After that, when the cylinder 12 is retracted, the suction pads 4 and 4 retract while sucking the central portion of the opening 17, and the fingers 8 and 8 provided on both sides of the opening 17 narrow the gap. Pulled towards the center, opening 17
Opens as shown in FIG. At this time, the support member 15a
Due to the elasticity of the spring 23, the suction pad 4 on the side retracts while its front surface returns obliquely to the opening 17 of the single bag 16 to widen the opening 17.

FIG. 6 shows another embodiment of the present invention.
A solenoid 25 is connected to the tip side of the plate 19 to which the suction pad 4 is attached, and is held obliquely with respect to the opening 17 until it hits the single bag 16, and after hitting the single bag 16, the solenoid 25 is held.
Is extended and rotated while the suction pad 4 is directed to the front, and one side of the opening 17 is laterally displaced to form the gap 24. In this case, the solenoid 25
Instead of, an air cylinder may be attached.

[0021]

As described above, according to the single bag supporting device of the automatic filling and packaging machine according to the present invention, the front surface of the suction pad is held obliquely with respect to the opening portion, and the suction pad is attached to the opening portion of the single bag. When it hits the center part, it was rotated to the front side and one side of the opening was laterally shifted to form a gap.
The opening can be reliably opened to quantitatively fill the contents.

[Brief description of drawings]

FIG. 1 is a perspective view showing a supporting member on one side of a single bag supporting device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the attachment structure of the suction pad shown in FIG.

FIG. 3 is a plan view showing a state immediately before the suction pad of the single-bag supporting device shown in FIG. 1 hits the single bag.

4 is a plan view showing a state in which a suction pad of the single bag supporting device shown in FIG. 3 is rotated to shift one side of an opening.

5 is a plan view showing a state where the suction pad of the single-bag supporting device shown in FIG. 4 is retracted to open the opening. FIG.

FIG. 6 is a plan view of a single bag supporting device in which a solenoid is connected to a suction pad according to another embodiment of the present invention.

FIG. 7 is a perspective view showing a supporting member on one side of a conventional single bag supporting device.

FIG. 8 is a plan view showing a state in which a single bag is sandwiched by a conventional single bag supporting device.

9 is a plan view showing a state where the suction pad of the single-bag support device shown in FIG. 8 is retracted to open the opening.

[Description of sign]

 1 Cross-shaped guide rail 3a Slide piece 4 Suction pad 8 Finger 9 Arm 12 Cylinder 15a Support member 16 Single bag 17 Opening 19 Plate 20 Shaft 21 Guide hole 22 Pin 23 Spring 24 Gap 25 Solenoid

Claims (2)

[Claims] 1. A single bag supporting device for an automatic filling and packaging machine, which supports a single bag, fills the contents in a state where the opening is opened, and then heat-seales the opening to seal the single bag. Supporting member consisting of fingers movably arranged along the opening portion and spaced apart from each other, and a suction pad connected between the fingers so as to be movable in a direction orthogonal to the opening portion and connected to an air suction device. Are arranged so as to face each other so as to sandwich the opening, and a suction pad provided on one of the supporting members is rotatably supported along the opening, and is connected to a spring to front the suction pad. A single-bag supporting device for an automatic filling and packaging machine, characterized in that it is elastically held obliquely with respect to the opening. 2. A single bag supporting device of an automatic filling and packaging machine for supporting a single bag and filling the contents in a state where the opening is opened, and then heat-sealing and sealing the opening. Supporting member consisting of fingers movably arranged along the opening portion and spaced apart from each other, and a suction pad connected between the fingers so as to be movable in a direction orthogonal to the opening portion and connected to an air suction device. Are arranged so as to face each other so as to sandwich the opening, the suction pad provided on one of the support members is rotatably supported along the opening, and the front surface of the suction pad is arranged along the opening. A single-bag supporting device for an automatic filling and packaging machine, which is provided with a solenoid or a cylinder for rotating it.