JP2000006917A - Package discharge apparatus in vacuum packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve shock-free discharge of a package. SOLUTION: A vacuum package 24 transferred by a belt 16 is discharged through a sliding plate 26. A link 32 is rotated on the axis of a pin 31 by resistance of an all-round cam 29 and, since such a rotating motion is transmitted to a lever 33 through a rod 34, the sliding plate 26 is inclined, and a sealing stand 15 for the package is allowed to pass under the sliding plate 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

2. Description of the Related Art Japanese Utility Model Laid-Open Publication No. 58-67708 discloses a pillow-like seal table which supports an endless belt around two pulleys arranged at a fixed interval and is fixed to the belt at an equal interval. While supporting the mouth of the bagged product from below,
Each time the bagged product arrives in the lower region of the chamber by the intermittently rotating belt, the chamber is moved down to cover the bagged product, and at the same time, the inside of the chamber is changed to a vacuum and the bag mouth is closed on the seal table. A vacuum packaging machine is disclosed in which each vacuum package is sequentially removed from a belt to a collection section after sealing. (One example of the configuration is as shown in FIG. 2 and will be described later in detail.)

[0002]

However, since a seal base of a predetermined height is fixed to the belt, when the vacuum-treated package falls from the belt at the belt end, an impact is applied to the article to be packaged. There is a problem in that point in the case of packages that do not like impacts, such as electronic components.

[0003] An object of the present invention is to reduce the impact of falling of a package.

[0004]

BEST MODE FOR CARRYING OUT THE INVENTION In order to smoothly discharge a package, an endless belt is stretched around a driving pulley and a driven pulley supported at regular intervals on a frame, and the endless belt is attached to the belt. Means for intermittent rotation at the same pitch as the arrangement interval of the seal bases fixed at equal intervals, and a chamber disposed above the belt and having a seal bar therein is moved downward in synchronization with the intermittent stop of the belt. And, after changing the inside of the chamber to a vacuum environment, a means for sealing the bag opening of the bagged product on the sealing table in the chamber, the swing supporting shaft is supported on the frame. A sliding plate having one end approaching the belt surface on the outer periphery of the driving pulley, and mechanically synchronized with the pulley and at a timing corresponding to the pitch of the front and rear seal bases. A timing means for generating a force, and a means for swinging the slide plate with mechanical power from the timing means each time the seal base arrives, and allowing passage of the seal base below the slide base. I do.

A sliding plate normally approaching the belt with mechanical power generated from a cam, which is timing means interlocked with a driving side or driven side pulley, that is, a mechanical power coincident with the passage timing of a seal stand. As a result, the package slides on the slide plate without impact.

A means for intermittently rotating an endless belt stretched around a driving pulley and a driven pulley arranged at a constant interval at the same pitch as an arrangement interval of seal stands fixed at equal intervals to the belt; The chamber disposed above the belt and having a seal bar therein is moved downward in synchronization with the intermittent stop of the belt, and the inside of the chamber is changed to a vacuum environment. A means for sealing the bag mouth of the bagged product, a sliding plate having a belt supporting frame supporting a swing support shaft and having one end approaching a belt surface on an outer periphery of the driving pulley, A motor started by a mechanical signal from a timing means interlocked with the pulley, and a sliding plate that swings each time the seal base arrives, and Constituting a means for activating the motor at a timing that allows the passage of Lumpur base.

In order to switch the endless belt that rotates intermittently in one direction to a motion in which the endless belt repeatedly moves forward and backward by the same pitch as the distance between the front and rear seal tables, a switching device is connected to the motor of the endless belt.

The movement pitch of the seal table, that is, the passage timing of the seal table, is detected by power using a mechanical signal generated from a pulse generator, which is timing means interlocking with the driving side or driven side pulley, and the rotation is performed at this timing. By activating a motor of a stroke type or a stroke type, the sliding plate normally approaching the belt floats only when passing through the seal table. As a result, the package slides on the sliding plate without impact.

A moving pitch of the seal base, that is, a passage timing of the seal base is detected by a pulse generated from a pulse generator interlocked with the pulley on the driving side or the judo side, and a rotary or stroke type motor is started at this timing. As a result of lifting the sliding plate approaching the belt only when passing through the seal table, the package can slide on the sliding plate without impact.

[0010] By providing a large number of rollers having an axis crossing the sliding direction of the package in parallel on the upper surface of the sliding plate to reduce the movement of the package, the inclination of the sliding plate can be set more gently. The impact of falling is reduced.

Since the rotating shaft of the sliding plate is supported by the belt supporting frame, the sliding plate is also displaced integrally when the inclination angle of the belt is changed.

[0012]

As shown in FIG. 2, the vacuum packaging machine rotatably supports a driving pulley 13 at one end of a frame 12 supported on a machine base 10 via pins 11 and a driven pulley 14 at the other end. An endless belt 16 having seven seal stands 15 fixed at equal intervals is provided around the two pulleys, and an inverted bowl-shaped chamber 17 is provided above the belt.
Are formed. By pushing and pulling the support bar 55 connecting the machine base 10 and the frame 12, the horizontal belt 16 is inclined about the pin 11, and the set angle of the set bolt 18 is set at an arbitrary angle.

When a number of bag-packed products 20 are arranged in parallel on a flat tray, and each bag is placed on the belt 16 integrally with the tray using the sealing table 15 as a pillow, the motor 51 hidden in the frame 12 moves the belt 16 back and forth. When the belt stops, the chamber 17 moves down to cover the bagged product 20. After the inside of the chamber is changed to a vacuum through the hose 21, the seal bar 23 is moved by the actuator 22.
Is pressed down to seal the opening of the bagged product with the seal base 15. When the belt starts moving again, the vacuum package 24 is sent out to the belt end.

FIG. 1 is an enlarged view of a portion of the driving pulley 13, and a sliding plate 26 is swingably supported via a pivot pin 27 on a bracket 25 integrated with the frame 12 supporting the pulley 13. A circumferential cam 29 as timing means is fixed to a shaft 28 which rotates integrally with the pulley, and a link 32 having an upper end pivotally supported 31 on the frame 12.
And the operation lever 33 of the sliding plate are connected via a rod 34. The package 24 is transferred onto the sliding plate 26 by the conveying force of the belt 16 rotating in the counterclockwise direction, and then the sliding plate 26 is floated by the pull of the link 32 swinging counterclockwise by the cam 29, and the lower side is sealed. Stand 15
Passes.

It is desirable that the rotation cycle of the driving pulley 13 of the belt 16 does not coincide with the pitch P of the front and rear seal bases 15.

FIG. 3 shows an embodiment in which the timing means is formed by a pulse generator 40. A rotation proportional pulse of the pulley 13 connected via a chain 41 is sent to a controller 42 to detect the pitch of the front and rear seal bases 15. When the controller 42 opens the on / off valve 43 in accordance with the pitch of the seal table 15, the existing vacuum source 4 in the vacuum packaging period is opened.
4 generates power in the stroke type motor 45 and swings the slide plate 26.

FIG. 4 shows an embodiment in which the sliding plate 26 is swung by a forward / reverse rotation motor 46. Each time a signal 47 is received from the controller 48 which is the same as the controller 42 in FIG. To allow the seal to pass.

As shown in FIG. 5, a large number of rollers 5 are
By providing 0 to improve the rolling of the package 24,
The inclination angle of the sliding plate 26 can be set gently,
Can reduce the drop impact.

As a switching device for reciprocating the rotation of the prime mover 51 in one direction in FIG.
2 and the operation switch 53 are installed. When using such means, the operator can place the bagged product 20 in a fixed position and also eliminate the evacuated package at that position, thus enabling a combined impact-free elimination, unlike mechanical treatment. .

[0020]

[Effect] There is no gap between the belt and the sliding plate, and it is possible to smoothly eliminate packages that are sensitive to shocks such as electronic components.
Further, even when the belt is inclined, the sliding plate is easily moved integrally with the belt.

[Brief description of the drawings]

Fig. 1 Enlarged side view of main parts

FIG. 2 is a side view of the entire apparatus.

FIG. 3 is a side view of another embodiment of a main part.

FIG. 4 is a side view of another embodiment of a main part.

FIG. 5 is a side view of another embodiment of the sliding plate;

[Description of Signs] 12 ... {Frame 13 ...} Driving Pulley 14 ... {Driving Pulley 15 ...} Seal Base 16 ... {Belt 17 ...}
Chamber 26 ‥ Sliding plate 29 ‥ Timing means 40 ‥ Pulse generator 42 ‥ Controllers 45, 46 ‥ Motor 51 ‥ Motor 52 ‥ Rotation switching device

Claims (6)

[Claims] 1. An endless belt is stretched around a driving pulley and a driven pulley supported at regular intervals on a frame,
Means for intermittently rotating the endless belt at the same pitch as the arrangement interval of the seal bases fixed at equal intervals to the belt; and a chamber arranged above the belt and having a seal bar inside, the intermittent rotation of the belt. The vacuum packaging machine comprising: means for moving down the chamber in synchronization with the stop timing, changing the inside of the chamber to a vacuum environment, and then sealing the bag mouth of the bagged product on the seal table in the chamber. A sliding plate that supports a pivot shaft and has one end approaching the belt surface of the outer periphery of the driving pulley;
Timing means for generating mechanical power at a timing that is synchronized with the pitch of the front and rear seal bases in conjunction with the pulley, and the sliding plate is provided with mechanical power from the timing means each time each of the seal bases arrives. Means for oscillating and allowing passage of the seal table below the slide plate. 2. An endless belt is stretched around a driving pulley and a driven pulley supported on a frame at regular intervals,
Means for intermittently rotating the endless belt at the same pitch as the interval between the seal bases fixed at equal intervals to the belt, and a chamber arranged above the belt and having a seal bar inside, the intermittent rotation of the belt. The vacuum packaging machine comprising: means for moving down the chamber in synchronization with the stop timing, changing the inside of the chamber to a vacuum environment, and then sealing the bag mouth of the bagged product on the seal table in the chamber. A sliding plate that supports a pivot shaft and has one end approaching the belt surface of the outer periphery of the driving pulley;
A motor activated by a mechanical signal from timing means interlocking with the pulley, and a motor that is oscillated on a slide plate each time the seal base arrives and at a timing allowing passage of the seal base below the slide base. A package discharging device comprising: means for starting. 3. A switching device is connected to the motor of the endless belt for switching the endless belt that rotates intermittently in one direction to a motion that repeats forward and backward movement by the same pitch as the front and rear seal base intervals. 3. The supply device for a packaged object according to items 2 and 3. 4. A plurality of rollers having an axis crossing the sliding direction of the package are provided in parallel on the upper surface of the sliding plate.
2. The package discharging device according to claim 1. 5. The package discharging device according to claim 1, wherein the timing means is formed by a cam linked with the pulley. 6. The package discharging device according to claim 2, wherein the timing means is formed by a pulse generator interlocked with the pulley.