JPH0523442Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to an improvement in automatic packaging equipment, and relates to an automatic packaging equipment that seals and packages articles in an L shape while transporting them in the vertical direction.

[Conventional technology]

As an automatic packaging device that folds a roll of plastic film and seals it in an L shape, the L
The structure of the sealer is known. According to the above structure, a film opening device consisting of a pair of upper and lower guide pieces through which the article passes through is provided on a horizontally provided transfer path for the packaged articles, and the upper guide piece of the film opening device is connected to the transfer path. It has a space between which the article and the folded upper piece of film pass,
Further, spaces are provided between the lower guide plate and the transfer path, respectively, through which the folded lower piece of film passes. Further, a sealing device is disposed behind this film opening device, and the film pulled out from the feeding device is folded back by the film opening device and pulled out from the inside to the sealing device, and the film that is folded up is horizontally inserted into the film opening device. It consists of a structure into which an article is inserted. In the above configuration, since the articles are transferred laterally, a large space is required for installation. Further, since a large resistance is applied when the film is fed out, a pushing device that directly pushes the object is required in the transfer path in order to pull out the film with the object. Furthermore, Japanese Utility Model Publication No. 60-20567 proposes a structure in which the transfer path is a belt conveyor in the above structure. Although the above structure does not use an extrusion device, the resistance of the film is large because no extrusion structure is provided, and the film cannot be pulled out satisfactorily with ordinary articles, so it has the drawback of being impractical.

[Problem that the invention attempts to solve]

This invention was devised in light of the above circumstances, as a result of intensive research, and its main objectives are:
To provide an automatic packaging device having excellent reliability, capable of reducing the size by eliminating the space required for transporting articles for packaging, and capable of reducing the resistance of a film by using the weight of the article to pay out the film.

[Means to solve the problem]

In order to solve the above problems, this invention (a) is arranged vertically on the top of the base and is tilted at approximately 45°.
It is equipped with a pair of left and right folding guides for folding the half-folded film with an edge slanted to the left and right, and a sealing device provided below the folding guides and having a seal horizontal piece that can be opened and closed. Insert the item between the folding guides and drop it, put the above item inside the film that is folded back by the folding guide and pulled out downward, and turn it upside down with a sealing device.
(b) Inside a pair of left and right folding guides, the folded film faces each other with a gap through which the folded film can pass, and extends vertically, and (c) A pair of left and right article guides are provided on the base having partition surfaces that prevent the article to be packaged inserted into the package from coming into contact with the film; (c) the article inserted between the pair of article guides falls and It is inserted into the film that is pulled out downward through the folding guide. We are taking technical measures.

[Operation] The half-folded film is folded back by a pair of folding guides, and the folded pieces are pulled out downward along the inner surface of each folding guide. At this time, the folded film is separated from the packaged product through the partitioning surface of the product guide, so there is no risk of the product and the film coming into contact with each other or getting entangled, and the film can be pulled out downward. can be done smoothly.

【Example】

Preferred embodiments of the automatic packaging device of this invention will be described below with reference to the drawings. The automatic packaging device 1 of this embodiment is a device that uses a half-folded film and has a transfer path along which the article is transferred in the vertical direction to perform L-sealing, and as shown in FIGS. A pair of folding guide pieces 2 provided on the underframe 10 and folding back the film F
, an article guide frame 3 into which the article to be inserted into the film F is placed, a sealing device 4 provided below the article guide frame 3, a shutter 8 which slides and drops the sealed article onto a conveyor 9, and a shutter 8 provided below the sealing device. It consists of a conveyor 9 provided. That is, the folded guide piece 2 is provided on the upper part of the base frame 10 having casters at the lower end. The folding guide piece 2 has an outer peripheral edge formed of a pair of right and left isosceles triangles spaced apart in the width direction, and has a hypotenuse portion opposite to the right angle portion as the insertion edge 2' of the article, and also serves as the insertion edge 2' of the folding guide piece 2. It has a known configuration in which the edge 2' is set at an angle of inclination of approximately 45 degrees with respect to both the direction in which the half-folded film F is fed out and the direction in which the article is transported. As shown in FIG. 3, the folded guide piece 2 is provided with a guide moving device 2a whose base end spirals in a symmetrical direction and expands and contracts in the width direction. In addition, a pair of article guide frames 3 are provided in the central empty portion of the folding guide piece 2 on the inner side thereof, separated from the pair of folding guide pieces 2 by distances L1 and L1 for film insertion, respectively. The article guide frame 3 is formed of a substantially right-angled isosceles triangle similar to the folded guide piece 2, and allows articles to be smoothly inserted into the folded half-folded film F. In this example,
The article guide is made of a plate shape, so
That wide surface becomes the partition surface. The article guide frame 3 is provided with a width adjustment device 3a that increases or decreases the interval in accordance with the width of the article to be packaged, but in the present invention, the folded guide piece 2 and the article guide frame 3 are partially They may be installed in series, and the width interval between the two may be adjusted simultaneously using a device that adjusts the expansion/contraction of one of them in the width direction. Next, a half-folded film F is placed on the folded guide piece 2.
The film feeding device 11 is provided behind the base frame 10 as clearly shown in FIG. 2, and includes a feeding roller R1, a tension roller R2, a direction changing roller R3, and a drawing angle (height) adjustment. The roll-shaped half-folded film F is sent to the folding guide piece 2 via the roller R4. Further, a stand 21 is provided on the front side of the base frame 10, and a stand 2 that is erected from the stand 21 is provided.
2 is provided with a height-adjustable article fixture 23. This article fixing device 23 has a cylinder 23a at its base that moves forward and backward toward the inside (toward the article), and is thereby stacked on the article G2 placed on the sealing device 4 and waiting to be sealed. The article G3 is pressed against and fixed to the article guide frame 3. As described above, this article fixing device 23 is used when a large number of articles are stacked and supplied to the automatic packaging apparatus 1. When supplying articles one by one, the table 2
1, the article can be inserted horizontally into the film. Next, the sealing device 4 is operated as shown in FIGS.
As shown in the figure, a pair of opposing rectangular seal frames 4', 4', a seal bar 4A and a seal horizontal piece 4B fixed to the upper part of each seal rectangular frame 4', and a seal bar 4A and a seal horizontal piece It consists of cover pieces 4C, 4C fixedly attached to the upper part of the frame 4B, respectively, and a bar opening/closing device 5 for opening and closing the rectangular sealing frames 4', 4'. Here, in the case of this embodiment, the seal horizontal piece 4B has an inverted L-shaped seal receiving part at its upper end as a horizontal piece,
The bar opening/closing device 5 uses this base end (lower end) as a pivot point.
With a, the upper end side opens and closes in the direction of expanding and contracting the width,
The structure is such that the vertical sides of the seal are welded and welded in an inverted L shape at the same time as the horizontal sides, but in this design, only the horizontal sides are sealed, and the vertical sides are sealed using a separate roller-shaped sealing device (not shown). ). This sealing device 4 is provided with a falling direction restraining piece 6 that restricts the falling direction of the article G1, and can be freely interlocked with the guide moving device 2a in the lateral direction by meshing with a gear train 6a. is guided to ensure that it falls onto a support fork 7, which will be described later. As is more clearly seen in FIG. 5, cover pieces 4C and 4C are fixedly attached to the seal bar 4A and the seal horizontal piece 4B to integrally cover the upper side thereof. This is to allow the article G2 waiting to be sealed, which falls while pulling out the film F from the folding guide piece 2, to be placed thereon without being directly placed on the upper end of the seal bar 4A. This is provided to prevent the article G2 and the film covering it from being affected. Below this sealing device 4 and on the conveyor 9
A shooter 8 is mounted on the horizontal rail of the base frame 10 at a position above the base frame 10.
are arranged so that they can be adjusted forward and backward. As clearly seen in FIG. 5, the shooter 8 has a tapered surface 80 on one side and a lower end in contact with the conveyor 9. Further, the shooter 8 is provided with a clamp 82 for adjusting forward and backward movement, and an elongated hole (not shown) is bored in the front-rear direction A at the attachment point of the base frame 10.
A configuration in which the shooter 8 can be moved back and forth to an appropriate position to adjust the distance in the height direction from the seal bar 5, and the clamp 82 can be tightened and fixed to the base frame 10 at the optimal position for holding the article G1. It is becoming. The shooter 8 has a tapered surface 8 that gradually descends obliquely toward the conveyance direction of the conveyor 9.
0, the article G1 can be slid onto the conveyor 9. A support fork 7 shown in FIGS. 4 and 5 is formed in the middle of the shooter 8 so that its height can be adjusted. The supporting fork 7 has a cylinder 71 arranged horizontally at its base 7A, and a series of forks 7B protruding in the extending (horizontal) direction at the tip of the telescopic rod for holding the article G1. . The base 7A of the support fork 7 is inserted into a long hole 81 provided diagonally on the side of the shooter 8, and a height adjustment clamp that sets the base 7A at a predetermined height and restrains it on the side of the shooter 8. 72, and the fork 7B can be moved to an arbitrary height position on the slope of the shooter 8. With the above structure, the half-folded film F fed out from the film feeding device 11 is folded back by the folding guide piece 2 and passes through the outside of the article guide frame 3 through the gap L1 between the sealing bar 4A of the sealing device 4. inserted into. The articles are inserted from the inside of the article guide frame 3 and are placed in multiple stages on the upper surface of the cover piece 4C on the seal bar 4A, and are waiting for articles G2, G3,...G _o
becomes. The article G3 placed on the article G2 on the cover piece 4C is pressed and fixed to the back of the article guide frame 3 by the article fixing device 23. In addition, when the articles are not placed in multiple stages, the articles may be slid one by one from the stand 21 and placed on the cover piece 4C as the article G2 awaiting sealing. Further, the width of the tip of the film F that has been fed out is welded in advance by a sealing device 4. Then, when the sealing device 4 is driven and opens outward, the cover piece 5b is displaced and the article G2 loses its support. Then, the article G2 enters the folded film F and collides with the sealing portion at the leading end of the film to become the sealing article G1, and the film F can be pulled out by the length of the article G1 by its own weight. At this time, since the falling attitude (film pulling out attitude) of the article G1 is restricted to a constant by the falling direction restraining piece 6, the article G1 is reliably dropped and placed on the support fork 7 while pulling out the film F. In this state, the sealing device 4 is then operated to close the sealing bar 4A and the sealing horizontal piece 4B so as to bring them into contact with each other, and fuse and weld the open end and the upper part of the film F into an inverted L shape. Next, when the fork 7B of the support fork 7 retreats, the article slides along the tapered surface 80 of the shooter 8 and falls onto the conveyor 9. This transport conveyor 9 transports the film-sealed article G1 to the next successive transport conveyor, where it enters a shrink tunnel and is sealed without any gaps. In FIG. 2, B is a blower, which is connected to a tube B' which has a suction port that opens near the lower end of the seal bar 4A of the sealing device.
The scraps of film that have been cut after fusing are sucked in through the suction port and stored in a tank T. In the above embodiment, the film is pulled out by the object's own weight, but if the object is light, the film may be pulled out by shifting the phase and facing each other.
The film F may be pulled out using a set of chains (not shown). Furthermore, in the above embodiment, a roll-shaped half-folded film was used to fold back the L-shaped seal, but a configuration in which a fully opened roll-shaped film was used and folded all at once into the same shape as in the previous embodiment using a folding guide piece was also adopted. It goes without saying that various designs may be modified without changing the gist of the invention.

[Effect of the idea]

In this invention, a pair of left and right article guides are provided inside a pair of left and right folding guides, and the folded film is passed through the gap between the two, while the article to be packaged is passed between the pair of article guides. Since the film is inserted into the package, there is no risk of the film getting entangled with the packaged article or being pulled, unlike in the conventional case, and the film can be easily pulled out downward. Since the folded film is smoothly pulled out downward, the line of fusing and welding is not distorted or inclined during sealing by the sealing device, and fusing and welding can be performed accurately.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a preferred embodiment of the automatic packaging device according to this invention, FIG. 2 is a side view of the same, FIG. 3 is a plan view of the same, and FIG. 4 is a plan view showing a supporting fork.
FIG. 5 is a side view showing the sealed state of the film. 1...Automatic packaging device, 2...Folding guide piece,
2a... Guide moving device, 3... Article guide frame,
4A... Seal bar, 4B... Seal receiver, 5...
Bar opening/closing device, 4C...cover piece, 6...falling direction restraint piece, 9...conveyor, 7...support fork, 7a...fork adjustment device, 8...shooter, F...film.

Claims (1)

[Claims for Utility Model Registration] (1) Located vertically on the top of the base and approximately 45°
It is equipped with a pair of left and right folding guides for folding the half-folded film with edges inclined to the left and right sides, and a sealing device provided below the folding guides and having a seal horizontal piece that can be opened and closed. Insert the item between the folding guides and drop it, put the above item inside the film that is folded back by the folding guide and pulled out downward, and turn it upside down with a sealing device.
In an automatic packaging device that seals the film in a shape and drops it onto a conveyor, inside a pair of left and right folding guides, the folded film extends vertically facing each other with a gap through which it can pass, and is inserted into the center. A pair of left and right article guides having partition surfaces that prevent the wrapped article from coming into contact with the film is provided on the base, and the article inserted between the pair of article guides falls and passes downward through the folded guide. An automatic packaging device that is inserted into a film that is pulled out. (2) Distance (width) between a pair of folded guides facing each other
Utility model registration claim 1, characterized in that the product is attached to a base so as to be movable in the expansion/contraction direction, and a pair of article guides are attached to the base so as to be movable in the expansion/contraction direction with a distance (width) facing each other. Automatic packaging equipment as described in section.