JPS6264706A - Article packer by doubling film - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention involves opening a two-fold film unwound from a roll film, inserting an article between the two-fold films through the opening, and sealing the film with a sealing device. The present invention relates to an article packaging device that hermetically packs articles by fusing and welding them.

PRIOR ART As a conventional device of this type, the present applicant has filed an application,
This is already known as Japanese Utility Model Publication No. 60-20567.

As shown in FIG.
A pair of upper and lower guide plates 6, 7 through which the item passes through
A film opening device M consisting of a film opening device M and a sealing device T following it are provided, and a feeding device P for bianalysis Q film r is provided next to the film opening device M, and a device for feeding out the article number 4 of the film opening device M is provided. Open diagonally in the opposite direction of P,
Insertion of both guide plates 6 and 7 1] Edge 11. In an article packaging device using a bi-folded film in which +2 is tilted at approximately the same angle with respect to both the film feeding direction and the article transport direction, a film opening device M is placed in the transport path 1 of the packaged article a from the rear to the front of the film opening device M. A primary belt conveyor 1a leading to the sealing device T and a secondary belt conveyor 11 following it are provided,
The upper and lower guide plates 6 and 7 of the film opening device M are arranged to face each other in parallel with the primary belt conveyor 1a sandwiched between them, and -
Article a is placed between the next belt conveyor 1a and the partial guide plate 6.
A space is provided for the upper piece f1 of the 1-opening film to pass through, and a space for the lower piece f2 of the 1-opening film to pass through between the opening and the lower guide plate 7. The horizontal piece 9 of the seal pedestal 8 of the sealing device T is placed between both the primary and secondary belt conveyors 1a and 111 so that a welded part 10 is formed, and the transported article is hung on the welded part 10 at the leading edge of the film. Accordingly, the film was drawn out from the outlet of the opening device M.

According to the device described in L, the sealing device T is activated when the charging tube +5.1.6 detects that the article a has passed through the horizontal piece 9 of the seal pedestal 8.

However, plastic model products... Book 7
There are some articles that can be detected with a phototube depending on their material and shape, such as paper and paper, so the above-mentioned packaging apparatus has the disadvantage that such articles cannot be packaged.

OBJECTS OF THE INVENTION It is an object of the present invention to enable an article packaging apparatus using a knee-fold film as described above to wrap articles that can be detected by a phototube. .

DESCRIPTION OF THE INVENTION The present invention skillfully utilizes a limit switch to achieve the above object.

In other words, the configuration of the present invention for achieving the object stated above is such that, in the above-mentioned packaging apparatus, the conveyance path for the packaged articles is a belt conveyor from the film opening device to the sealing device, and a primary belt conveyor from the film opening device to the sealing device. It consists of an inclined plate and a secondary inclined plate in the sealing device, and a film pull-out device consisting of an upper and lower chain that bites the upper and lower pieces of the film together is provided on the side of the sealing device on the film opening side. A limit switch is provided to detect the collision of the article, and the sealing device is activated by the collision.

Embodiment FIGS. 2 to 5 show an embodiment of the present invention, in which the transport path R through which the packaged article a flows is a horizontal belt conveyor 20 up to the opening device M for the bifold film f; Primary inclined plate 21 from film opening device M to sealing device T
and a secondary inclined plate 22 in the sealing device T. Then, place the roll film F next to the film opening device M.
A device P for feeding out the double-folded film f is provided, and a film drawer Q with an opening device M is provided on the side of the film opening side of the sealing device T, and the opening device M, the feeding device P, and the sealing device T5 draw out the film f. The devices Q are inclined forward and low at the same angle as the inclined plates 21 and 22, respectively, and a mint switch S is provided on the second side of the secondary inclined plate 22 to detect when the article a hits. -Next, secondary inclined plate 21.2
The angle of inclination of the second grade is preferably around 45 degrees so that the article a can slide down.

The film opening device M consists of an upper guide plate 23 above the large inclined plate 21 and a lower guide plate 24 directly below the primary inclined plate 21 so that the article a passes between them.
Both guide plates 23.24 are connected by a pair of left and right supports 25.26 that sandwich the
are integrally connected, and the inlet 27 of article a is connected to the feeding device P.
It opens diagonally on the opposite side.

That is, both guide plates 23 and 24 of the opening device M are right-angled isosceles triangles of the same size, and the entrance edge of the article a is 28°29.
The oblique side facing the right angle part 30 is positioned as
The artificial edges 28 and 29 are both at an inclination angle a1β of 45 degrees with respect to the feeding direction X of the film f, the transport force of the article, and the direction Y.
This is Nishishida (Figure 4).

The film n output L I station P is provided with a feeding roller 33 under a pair of rollers 31 and 32 that receive the roll film F, and the feeding roller 33 is placed at a height approximately at the middle of the upper and lower guide plates 23 and 24 when they are opened. It's a position.

The sealing device T is located under the L-type roller 35 that operates to open and close.
A mold seal pedestal 36 is provided, and a horizontal piece 37 of the seal pedestal 36 is provided.
is located between the primary inclined plate 21 and the secondary inclined plate 22.

The pull-out device Q for the film f has an upper and lower chain of 38°39
is attached to the circulation guide plate 40, 41 so that the film f bites between them, and the drive tooth r#42 is meshed with the lower chain 39.

Also, the length of the film f to be pulled out is determined by turning the knob 4 on the meter G.
It can be adjusted by 3.

The limit switch S is attached to the lower end of the anti-eaves lever 45 so as to kick up in that direction in order to release the object in the moving direction after the object & has collided with the object and the reversing supporter 4
6 is movable in the front-rear direction V by means of a guide rail 47 (FIG. 5). Reference numeral 48 designates a fixed bolt for adjusting the movement of the reversing supporter 46.

When operating the above article packaging device, first
Set it in the open state using the opening device M. To do this, first, the roll film F is placed on the feeding device P with the film folding portion 49 facing opposite to the flow direction Y of the article a.
Then, place the upper piece f1 of the two prayer films f pulled out on the upper guide plate 23 of the opening device M, and place the lower piece f2
While inserting the
．． f2 are the entrance edges 28 and 2 of the guide plates 23 and 24, respectively.
Fold it back at step 9 and turn it inside. Then, since the entrance edges 2, 8, and 29 are both inclined at the same 45 degrees with respect to the feeding direction X of the film f and the transport direction Y of the article a (Fig. 4), the film f is At the inlet 27 of M, the direction is changed to the transport direction Y of the article a, and the film f is turned upside down and opened. Both upper and lower pieces of film f between chain 38 and 39 f5. Overlap f2 and dig in.

Further, the position of the limit switch S is adjusted appropriately according to the size and shape of the article a, and at the same time, the length of the film f that the drawer Q pulls out at one time is adjusted by the knob 43 of the meter G. The length L approximately corresponds to the distance from the horizontal piece 37 of the seal holder 36 to the limit switch S (FIG. 4).

The operation of the packaging device is started in this state, and first the sealing device T is operated idly to form the first welded part at the leading edge of the film f, and the belt conveyor 20 is
Place articles a on top of them one after another.

When the operation of the packaging device is started, the opened film f is pulled out from the opening device M by the biting of the upper and lower chains 38 and 39, and its tip is pulled out onto the secondary inclined plate 22, while the article a is pulled out from the belt. It is transferred from the conveyor 20 to the primary inclined plate 21 and slides down thereon towards the secondary inclined plate 22, where the receiver is stopped at the welded portion 40 at the tip of the secondary inclined plate 22'. Then it slides between the upper and lower pieces f++f2 of the object/film f, and there.

When item a hits limit switch S, sea □
The sealing device T operates and the films , , r are fused and welded in an L-shape on the seal pedestal 36 . In other words, it is sealed in a completely closed state □, and at the same time, the limit switch S flips upward and escapes, as shown by the dashed line in Figure 5.
The packaged article A slides down the secondary ramp to the next heat tunnel (not shown).

By fusing and welding the film f, a fusing and welding part 40 is formed at the tip of the film f each time.
1, the article that has slipped down is stopped by its fusing weld 40, and when the article a hits the limit switch S, the sealing device T is activated and the limit/throat switch S escapes. The same operation is repeated to wrap each article a.

Effects of the Invention As explained above, the present invention provides a transport path for the packaged articles by a belt conveyor up to the film opening device, a primary inclined plate from the film opening device to the sealing device, and a secondary inclined plate in the sealing device. A film pull-out device consisting of a lower chain is installed, and a limit switch is installed on the secondary inclined plate to detect the collision of an object. This packaging device has the excellent effect of automatically and efficiently wrapping items that can be detected with a phototube automatically and efficiently using a bifold film. It is something that can be demonstrated.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a conventional packaging device, FIGS. 2 to 5 show an embodiment of the present invention, FIG. 2 is a perspective view of the packaging device, FIG. 3 is a side view, and FIG. 5 is a perspective view as seen from the direction facing the inclined plate, and FIG. 5 is a side view showing how the limit switch is installed. M...Film opening device P...Feeding device Q...
・Unwinding device R...Transfer path S...Limit switch T...Sealing device X...Film feeding direction

Claims (1)

[Claims] 1) A film opening device consisting of a pair of upper and lower guide plates, through which the article passes through, and a sealing device following the film opening device are installed in the transport path of the packaged article, and a feeding device for bi-folded film is installed next to the film opening device. A double-fold film is provided in which the article entrance of the film opening device is opened diagonally in the opposite direction of the feeding device, and the entrance edges of both guide plates are both inclined at the same angle with respect to the film feeding direction and the article transport direction. In an article packaging device, the transport path of the article to be packaged is formed by a belt conveyor up to the film opening device, a primary inclined plate that slides the article from the film opening device to the sealing device, and a secondary inclined plate that slides the article down in the sealing device. A film drawer device consisting of an upper and lower chain that bites the upper and lower film pieces together is provided on the side of the film opening side of the sealing device, and a limit switch is provided on the secondary inclined plate to detect the collision of the article. 1. An article packaging device using a bifold film, characterized in that a sealing device is activated by abutment.