JP2544773Y2 - Automatic packaging equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic packaging apparatus for continuously automatic packaging of articles using a heat-sealable plastic sheet.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Application Laid-Open No. 2-32927, for example, this type of automatic packaging apparatus includes a supply belt conveyor for sequentially supplying articles to be packaged, and an upstream of the belt conveyor. A film opening guide member provided so as to sandwich the end portion from above and below, and for folding back the half-fold film for packaging from the inside to the outside; and an upstream end side of the supply belt conveyor, which is substantially flush with the supply belt conveyor. An unloading belt conveyor for unloading a packaged article provided endlessly rotatable at the end thereof, and a belt conveyor for unloading the unloading belt conveyor that is vertically open and closed, and at least one of the A sealing device consisting of a pair of frames to which a flat L-shaped heat knife for heat sealing two sides is attached, and an open end of the folded half-fold film for packaging are grasped. Automatic packaging apparatus is disclosed comprising a towing conveyor for pulling the downstream side while.

According to this packaging apparatus, articles to be packaged are:
The plastic sheet is supplied to the folded portion of the plastic sheet by the supply conveyor, is covered from above and below by the heat-sealable plastic sheet folded in two, and the plastic sheet is heat-sealed around the article to be packaged on the upstream end of the transport conveyor. In this way, packaging is performed continuously and automatically.

However, in this conventional automatic wrapping apparatus, the upper and lower film opening guide members can move up and down, but cannot move back and forth in the article conveying direction. The turning position is constant. Therefore, if the mounting positions of the upper and lower film opening guide members are shifted from the beginning, the top and bottom of the fed plastic sheet will not be aligned, and the mounting positions of the upper and lower film opening guide members will be incorrect. If it is set, it is not possible to arbitrarily form a shift in the plastic sheet.

[0005]

[Problems to be solved by the invention] This invention was created in view of the above-mentioned circumstances, and its main problems are:
It is an object of the present invention to provide an automatic packaging apparatus capable of adjusting the front and rear displacement of a plastic sheet folded by upper and lower film opening guide members.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a transfer path for an article to be packaged, wherein a pair of upper and lower parts are provided so as to be adjustable in height so that the article can pass through the transfer path. A film opening guide member in which the edge of the edge crossing obliquely and the edge of the edge extending along the longitudinal direction of the transfer path form a corner, and a sealing device disposed behind the film opening guide member; A feeding device for a two-fold film is provided beside the opening guide member, and the article inlet side of the film opening guide member is opened obliquely in a direction opposite to the two-fold film feeding device, and the upper and lower film opening guide members are provided. In an automatic packaging apparatus in which the entrance edge is inclined at substantially the same angle with respect to the film feeding direction and the article transfer direction, at least one of the film opening guide members is folded in two. Attached to be displaceable back and forth the construction piece forming an inlet edge of the side in contact with the film with respect to the transport direction of the article takes the following technical means of.

Further, in the invention of claim 2, at least one of the film opening guide members pivotally attaches a component piece having an entrance edge on a side in contact with the two-folded film so as to be tiltable back and forth with respect to the article transfer direction. Take the technical means of doing.

[0008]

[Operation] At least one of the film opening guide members provided above and below the transfer path of the article to be packaged moves the component piece forming the entrance edge on the side in contact with the two-fold film back and forth in the article transfer direction. Since it is displaceably mounted, the entrance edge can be adjusted back and forth, thereby adjusting the folding position of the half-folded plastic sheet and adjusting the film shift. Further, even when the component pieces are pivotally attached so as to incline the entrance edge back and forth, the film displacement can be similarly adjusted by adjusting the folding position of the half-folded plastic sheet.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings. The automatic packaging apparatus shown in FIG. 1 is provided with a primary transport path 1 leading to a sealing device 3 composed of an L sealer and a secondary transport path 2 leading from the sealing device 3 to a heat tunnel (not shown) for film heat shrinkage. Have been. The primary transport path 1 and the secondary transport path 2 are both formed of a belt conveyor, and a roller-shaped half-fold film feeding device 4 is provided on the side of the middle of the primary transport path 1. A film opening device 5 is provided on the primary transport path 1 in front of the device 4.

The opening device 5 for the two-fold film is shown in FIG.
As can be more clearly understood, an upper film opening guide member 6 spaced apart from the primary transport path 1 and a lower film opening guide member 7 arranged parallel to the hanging position and below the primary transport path 1. The height adjusting device 8 moves up and down. In addition,
The sealing device 3 has a known configuration including an L-shaped receiving table 3B provided between the primary transport path 1 and the secondary transport path 2 and a sealer main body 3A having a heat knife corresponding thereto. I have. In the drawing, reference numeral 8 denotes a film pulling device for pulling the remaining piece of the film blown into an L shape by the sealing device.

Next, the film opening guide members 6,
7 is an entrance edge of the film 6 obliquely across the primary transport path 1.
a, the inclined rods 60 and 70 forming the 7a , and the primary transport path 1
Extending rods 61 and 71 which become edges extending along the longitudinal direction of
, And are arranged so as to form a 45-degree corner at their tips. In this embodiment,
The guide member 6 for opening the upper film includes a round bar or a pipe in which the inclined rod 60 and the extending rod 61 are separate bodies, and the base end of the extending rod 61 is fixed to the upper support frame 62. The tip of the inclined rod 60 is pivotally attached to the tip of the extension rod 61.
One.

On the other hand, the base end of the inclined rod 60 is
It is connected to. That is, an elongated hole 63 is formed in the upper support frame 62 along a pivotal locus of the base end of the inclined rod 60, and the base end of the inclined rod 60 is screwed through the elongated hole 63.
Thus, the inclined rod 60 can be fixed to the upper support frame 62 at a position where it is appropriately tilted with the pivot point P1 as a fulcrum.

Here, the inclined rod 60 is provided with a plurality of blast holes (not shown) for injecting air introduced from an air source, or a number of rollers of the same diameter are juxtaposed around the inclined rod. A configuration for smoothing the folding of the half-fold film may be appropriately used. On the other hand, the lower film opening guide member 7 has an extending rod 71 and an inclined rod 70 which are bent in a substantially F-shape with one rod material, and a base end of the extending rod 71 and an inclined rod. 70 are fixed to the lower support frame 72 at the separated positions.

In other words, the triangle formed by the lower film opening guide member 7 and the lower support frame 72 is a right isosceles triangle, and the extending rod 71 and the lower support frame 72 are connected (fixed). The sides are disposed at substantially right angles, and the corners of the triangle are located at the extending portions, and the extending sides are bent at an angle of about 45 degrees from the corners and gradually inclined to form the lower support frame 7.
2 both by abutment at about 45 degrees is made from shape fixation.

The upper support frame 62 and the lower support frame 7
2 can be adjusted in the vertical direction by the height adjusting device 8. The height adjusting device 8 of the present embodiment is configured such that an operating shaft on which a screw is engraved via a conversion mechanism such as a bevel gear by rotating a handle 8H formed at the tip of a rotating shaft 8A protruding laterally. 8B, the nut-shaped receiving portion 8C fixed to the upper support frame 62 and the operating shaft 8B.
Although it is configured to be advanced and lowered by screwing back and forth by screwing with the above, other known height adjusting means may be used. 8G is a pair of guide shafts for moving the upper and lower support frames in parallel.

Next, the operation of the automatic packaging apparatus will be described. First, a half-folded (folded) film F (heat-sealable plastic sheet) is formed by folding a roll of the half-folded film F with its folded edge f3. The article G is set in the feeding device 4 in a state opposite to the conveying direction. Then, the upper piece f1 of the half-folded film F drawn from the film roll
Is placed on the upper film opening guide member 6, and the lower and upper pieces f2 are inserted under the lower film opening guide member 7, and the inner surfaces f1 'and f2' of the upper and lower pieces are respectively attached to the film opening guide member 6, 7 is folded along the edges of the inclined rods 60 and 70, and the bent edge f3 side is the extension rod 6
1 and 71, and open the mouth in a reverse opening state.

In this case, as shown in FIG. 3, the inclined rod 60 of the upper film opening guide member 6 is moved forward (A
When the base end is fixed with a screw 64 at that position, the position of the inclined rod 70 of the lower film opening external member 7 is fixed, and as shown in FIG. The film f1 can be shifted forward with respect to the lower film f2. Conversely, when the inclined rod 60 is pivoted rearward in the transport direction (direction B), and the base end is stopped with the screw 64 at that position, the upper film f1 as shown in FIG.
Can be shifted farther than the lower film f2.
In this manner, by shifting the tilting rod 60 to change the tilt angle, it is possible to adjust the shift of the film. In the above-described embodiment, the configuration in which the entrance edge of the film opening is formed as an inclined rod is illustrated, but a plate shape may be used instead of the rod material.

Further, a configuration may be adopted in which the robot moves not back and forth but in parallel back and forth along the transfer path. In a different embodiment shown in FIG. 6, the upper film opening guide member 6 has a triangular plate shape, and is fixed to the upper support frame 62 via a continuous arm 65. That is, the continuous arm 65 is provided with a long hole 63 extending forward and backward, and the upper support frame 62 is screwed into the upper support frame 62 at a position adjusted by moving the guide member 6 forward and backward.
The entrance edge 6a of the guide member 6 can be adjusted back and forth as shown by a virtual line. Here the slot 63
Is formed on the connecting arm 65, but may be formed on the upper support frame 62. Further, instead of the connecting arm 6a, a link or a cylinder that expands and contracts may be attached to the upper support frame 62 to displace the entrance edge for opening in the front and rear direction in parallel.

In each of the above embodiments, the front and rear adjustable entrance edges are formed only on the upper film opening guide member,
Although the edge of the lower film opening guide member has a fixed structure that is not displaced in the front and rear, the entrance edge of the lower film opening guide member can be adjusted only in the front and rear, and the upper film opening guide member can be adjusted. The edge may be fixed back and forth. Further, the entrance edges of the upper and lower film opening guide members may be respectively displaceable back and forth.

[0020]

Since the present invention has the above-described structure, it is possible to adjust the displacement of the film by displacing the entrance edge of at least one of the film opening guide members. Even when the position is shifted due to the above-mentioned conditions, the film can be accurately positioned. In addition, since the adjustment of the film shift at the time of reversing the half-fold film can be easily performed, the practicability is excellent.

[Brief description of the drawings]

FIG. 1 is a perspective view of the automatic packaging device of the present invention.

FIG. 2 is a perspective view showing a main part of the opening device.

FIG. 3 is a plan view of the same.

4 (a) is a plan view showing the displacement of the film when the entrance edge of FIG. 3 is displaced in the direction A, and FIG. 4 (b) is a plan view showing the displacement of the film when the entrance edge is displaced in the direction B. It is.

FIG. 5 is a plan view showing another embodiment in which the entrance edge is moved in parallel back and forth and displaced.

[Description of Signs] 1... Primary transport path 2... Secondary transport path 3... Sealing device 4... Feeding device 5. Opening guide member 6a: entrance edge 60: inclined rod 61: extending rod 62: upper supporting rod 63: long hole 64: screw 7: for lower film opening Guide member 7a: entrance edge 70: inclined rod 71: extending rod 72: lower support rod 8: height adjusting device F: half-folded film G: covered Packaging goods

Claims (2)

(57) [Scope of request for utility model registration] 1. A transfer path for an article to be packaged, wherein the article is provided in a pair of upper and lower parts so as to be adjustable in height so as to pass through the space, and extends along an edge portion obliquely crossing the transfer path and a longitudinal direction of the transfer path. A film opening guide member in which the edge and the tip form a corner, and a sealing device provided behind the film opening guide member are provided, and a bifold film feeding device is provided beside the film opening guide member, The article entrance side of the film opening guide member is obliquely opened in the opposite direction to the two-fold film feeding device, and the entrance edges of the upper and lower film opening guide members are substantially aligned with the film feeding direction and the article transfer direction. In the automatic packaging apparatus inclining at the same angle, at least one of the film opening guide members forms a component piece having an entrance edge on the side in contact with the two-fold film. Automatic packaging apparatus characterized by comprising attached displaceably back and forth relative feeding direction. 2. A transfer path for an article to be packaged, wherein the article is provided as a pair of upper and lower members so as to be adjustable in height so as to pass through the gap, and extends along an edge portion obliquely crossing the transfer path and a longitudinal direction of the transfer path. A film opening guide member in which the edge and the tip form a corner, and a sealing device provided behind the film opening guide member are provided, and a bifold film feeding device is provided beside the film opening guide member, The article entrance side of the film opening guide member is obliquely opened in the opposite direction to the two-fold film feeding device, and the entrance edges of the upper and lower film opening guide members are substantially aligned with the film feeding direction and the article transfer direction. In the automatic packaging apparatus inclining at the same angle, at least one of the film opening guide members forms a component piece having an entrance edge on the side in contact with the two-fold film. Automatic packaging apparatus characterized by being pivotally mounted tiltably back and forth relative feeding direction.