JPH0232916A - Wrapping device - Google Patents

Abstract

PURPOSE:To eliminate a band device without increasing an apparatus in size by a method wherein an object to be wrapped is proceeded along with wrapping paper, and first and second reciprocal finger devices which fold the front and rear edges of paper respectively and fold edges of both sides and a device for folding both lugs are provided. CONSTITUTION:Wrapping paper B is held perpendicular and the front side of an object A to be wrapped is interposed between a first reciprocal finger device 3 together with the wrapping paper B. With the front of a paper piece B1 folded backward and the right and left edges folded, the object A is moved forward being guided by an elevating device 7 onto a transfer base 4 below a supply base 1. Then a second finger device 5 reciprocally moves so that the rear of a paper piece B2 is folded forward and the right and left protruding paper pieces are folded. The rear piece B2 is sealed by a tape application device 8a, and then the first and second finger devices 3, 5 restore. At the time of restoring, the first finger device 3 is guided by the elevating device 7. It is moved forward to pass a device for folding both edges 6 so that the right and left protruding lugs are folded back and the edge is sealed by a tape application device 8b.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is a novel method for almost automatically wrapping relatively large plate-like rectangular parallelepiped objects (for example, objects made of many layers of various cardboards). Related to packaging equipment.

(Prior Art) In Japanese Patent Application No. 62-311776 (filed on December 9, 1988), the present inventor has developed a new packaging device for automatically packaging a plate-shaped rectangular parallelepiped object. proposed. The general structure of the device is as follows: a supply table for the packaged items, a wrapping paper vertical holding means, a device that presses the packaged items against the wrapping paper, holds the packaged items together with the wrapping paper, and transports them forward. a first reciprocating finger means for folding the front piece of wrapping paper backwards above the object to be packaged and edge-folding both sides; an up-and-down elevating conveyance platform for receiving the transferred object to be packaged; Consists of a second reciprocating finger means for folding the rear paper piece of the wrapping paper forward and edge-folding the both sides on the object to be packaged on the table, and a means for folding the wrapping paper on both sides, resulting in space saving. It had an excellent structure and was widely praised in various quarters.

(Problem to be Solved by the Invention) In the conventional packaging device described above, the first reciprocating finger means folds the front paper piece of the wrapping paper and folds the edges of both sides, and then separates the packaged item from the wrapping paper. After that, when the front paper piece has been folded, the article to be packaged and the wrapping paper move to the lower position as the elevating conveyance table descends, and the second reciprocating finger moves to the lower position. The means is used to fold the back paper piece and edge-fold the both sides. Therefore, after being pulled out by the first reciprocating finger means, the broken part will return slightly, and when joining the front paper piece and the rear paper piece with the sealing tape, it is necessary to press it again and tighten the loosened part. Additional means had to be added.

The present invention has been made in view of the above, and is capable of packaging relatively large plate-like rectangular parallelepiped items in a space-saving manner, and without releasing the front paper piece that has been folded once. It is an object of the present invention to provide a packaging device which performs rational operation to maintain folding of a front piece of paper by a first reciprocating finger means until folding of a rear piece of paper by a reciprocating finger means.

(Means for Solving the Problems) The structure of the present invention for achieving the above object will be explained based on the attached embodiment diagrams. Fig. 1 is a perspective view showing an embodiment of the packaging device of the present invention, Figs. 2 to 5 are longitudinal sectional front views showing the operating state of the device, and Fig. 6 is a partial cutaway of the part marked with ■ in Fig. 2. 7(a) and 7(b) are partially cutaway perspective views of the section shown in the line ``■'' in FIG. 2, and FIG.

That is, the packaging apparatus of the present invention includes a supply table 1 on which a substantially plate-shaped rectangular parallelepiped article A is placed horizontally, and a sheet of wrapping paper B placed on the front end side of the article A on the supply table 1. a wrapping paper vertical holding means 2 that waits in a substantially vertical state; and a wrapping paper vertically holding means 2 that holds the packaged object A, which has been forcibly pushed in while in contact with the wrapping paper B that is in the vertical state, together with the wrapping paper B and transports it forward; At the same time, wrapping paper B
a first reciprocating finger means 3 for folding the front paper piece B□ upwardly and backwardly over the packaged object A and performing edge-folding on both sides;
A conveyance table 4 which is lower than the supply table 1 and has a step larger than the thickness of the packaged article A and which receives the packaged article A transferred together with the reciprocating finger means 3, and a first reciprocating finger means 3. Lifting means 7 for lowering the height of the supply table 1 to the height of the conveyor table 4 during the forward movement and raising it from the height of the conveyor table 4 to the height of the supply table 1 during the return movement; A piece of paper B on the rear side of the wrapping paper B is placed on the article A which is held by the first reciprocating finger means 3 and lowered onto the conveyor table 4.
Fold 2 forward and then fold the edges of both sides.
The device is comprised of a reciprocating finger means 5, and a wrapper folding means 6 disposed at the end of the conveyor table 4.

Moreover, the conveyance table 4 has a belt conveyor 41 and its driving means, and can prevent the wrapping paper B from being damaged or distorted in appearance during sliding movement due to the weight of the article to be packaged A.

(Operation) The operation of the packaging device having the above configuration will be explained. First, in FIG.
The paper is held in a vertical position on the front end of the paper, and from this state, as shown in FIG. It is held together with the wrapping paper B by the first reciprocating finger means 3.

At this time, the wrapping paper B is released from the vertically held state, and the front paper piece Bi is folded backward over the packaged object A, and the protruding paper pieces on both left and right sides are edge-folded.

Next, as shown in FIG. 4, the first finger means 3 clamps the article to be packaged A together with the wrapping paper B and moves forward from the supply table 1 onto the conveyor table 4 at a lower position under the guidance of the elevating means 7. Thereafter, as shown in FIG. 5, while the first finger means 3 is holding the front side of the article A and the wrapping paper B on the conveyor table 4, the second finger means 5 moves forward and behind the wrapping paper B. The side paper piece B2 is folded into the upper curved edge of the article to be packaged A, and the left and right protruding paper pieces are edge-folded. During this time, the wrapping paper vertical holding means 2 operates to place the wrapping paper B in a vertical standby state. Then,
The back paper piece B is attached by the tape pasting device 8a described in the example below.
2 can be sealed, after which the first and second finger means 3, 5 are returned to the position shown in FIG. During the backward movement, the first finger means 3 is guided by the lifting means 7.

In the subsequent wrapping operation, as shown in FIG. 3, by the forward movement of the first finger means 3 or by the belt conveyor 41 provided on the conveyor table 4, the wrapping paper B is already folded to the edge. Object A (indicated by the - dotted chain line) is transported forward and passes through the binaural folding means 6. Here, the folded left and right protruding ears are folded back onto the side and top surfaces of the packaged object A, and the ends are sealed by a tape pasting device 8b, which will be described in Examples later, to complete the packaging.

(Example) Hereinafter, the present invention will be explained in further detail with reference to Examples.

In FIGS. 1 to 8, a plurality of items A are stacked on the table lifter 10, and the items A at the top are sequentially fed horizontally onto the air table 100. . Thereafter, in response to a signal from a level detector (not shown), the lifting device 11 is operated, and the table lifter 10 is raised to a position where the next packaged object A can be supplied onto the air table 100.

In the case of rotation, an example is shown in which the supply table 1 is composed of a table lifter 10 and an air table 100, but it is limited to this as long as it can hold the objects A to be packaged horizontally and supply them sequentially. It's not something you can do.

The air table 100 is configured so that pressurized air is blown out from a large number of holes on the top surface, so that heavy objects A can be easily moved.

The wrapping paper vertical holding means 2 is used to hold the wrapping paper A on the supply table 1.
A frame 21 is constructed on both sides of the machine adjacent to..., a suspension chain 22 with one end fixed above the frame 21, and a motor (not shown) by winding the chain 22 half way. The gear sprocket 23 to be driven and the sprocket 2
3 and a weight bar 24 held between the above-mentioned fixing points, and a suction means 25 suspended from the other end of the above-mentioned chain 22. The weight bar 24 and the suction means 25 are installed between the frames 21 on both sides, and are movable up and down in opposite directions along vertical guide rails (both not shown) attached to the frames 21, respectively. As shown in FIG. 6, the suction means 25 includes left and right mounting base plates 26, and a hollow rectangular suction tube 27 installed between them and having a plurality of suction ports 271 opened at approximately equal intervals along the longitudinal direction. and a flexible suction hose 28 (connected to a suction pump, not shown) connected to the suction pipe 27. Both ends of the suction tube 27 are connected to the mounting base plate 26 via eccentrically positioned support shafts 272.
Pins 273 are protruded from both ends of the suction tube 27 apart from the support shaft 272 .

The pin 273 is attached to the support shaft 27 on both side mounting base plates 26.
It is slidably inserted into an arcuate groove 261 opened over approximately 45@ with 2 as the center of curvature, and its end is fixed to the other end of the chain 22. When the mounting base plate 26 is in a suspended state as shown in FIGS. 1 to 4, the pin 2
73 comes into contact with one end of the arcuate groove 261, and the suction tube 27 stands still at an inclination angle of about 45° with the suction ports 271 facing diagonally downward. Then, due to the rotation of the sprocket 23, the mounting base plate 26 is lowered, and the suction tube 27 is placed on the upper surface of the rear end of the wrapping paper B stacked on the wrapping paper stock stand 9, which will be described later. 273 in the arcuate groove 261, the suction tube 27 falls down as shown in FIG. ...is more attracted to you. If the sprocket 23 is rotated in the opposite direction and the mounting base plate 26 is raised, the wrapping paper B is held in a vertical standby state as shown in FIGS. 1 to 4.

A rear plate 21a horizontally suspended at the rear of both frames 21 and 21.
The lower end of the holder forms a feeding opening for the packaged object A between the upper surface of the supply table 1 and the subsequent packaged object A during the folding operation.
A shutter 21b that prevents the feed of the opening controls opening and closing of the opening. That is, the first finger means 3 is opened only when it is in a standby state.

The above-mentioned wrapping paper stock table 9 is stored below the machine stand, that is, almost directly below the conveyor table 4, and can be taken in and out at will by a wheel 91 on the side, and the wrapping paper stock table 9 is placed in a vertical standby position starting from the topmost wrapping paper B. It is brought out.

The first finger means 3 has a main body 30 in which a horizontal finger plate 31 on the upper surface, a bottom plate 32, and a vertical push plate 33 on the front end are assembled into a generally U-shaped frame with an open rear side. A finger 34 for edge folding is fixedly provided. On the top surface of the finger plate 31, there is a cylinder (
For example, an air-driven type) 35 is provided, and the rod 35
1 penetrates the finger plate 31 and its lower end protrudes from the lower surface of the finger plate 31. The finger means 3 has a pair of pins 36 on both sides that are slidably fitted into elongated holes 36a in the vertical direction.
It is possible to reciprocate back and forth via a sliding plate 36 that is engaged to be able to move up and down via h.

As shown in FIGS. 7(a) and 7(b), the sliding plate 36 is capable of sliding back and forth along slide rods 361 and 361, and is fixed in the middle of an endless chain 363 that is driven back and forth by a motor 362. By driving the chain 363, the finger means 3 is reciprocated back and forth along the slide rod 361°361. A roller 71 is rotatably supported on one side of the pin 36b, and is connected to a lifting means 7 to be described later.
The main body 3o is configured to move up and down with respect to the sliding plate 36 along a guide rail 72. A limit switch 311 is attached to the finger plate 31, and when the object to be packaged A is forcibly pushed into the U-shaped space of the finger means 3 together with the wrapping paper B as shown in FIG.
The cylinder 35 then operates in response to this signal, and the lower end of the rod 351 and the bottom plate 32 sandwich the front part of the object A together with the wrapping paper B. After pinching, the finger means 3 pulls the packaged object A and the wrapping paper B onto the conveyance table 4 by operating the motor 362. During the above-mentioned pushing, the wrapping paper B is pulled and released from the suction and holding by the suction tube 27, and the front paper piece B is folded backwards above the packaged object A by the action of the finger plate 31, and
The pieces of paper protruding left and right are also folded back by the fingers 34 at the same time. The wrapping paper B is removed by suction by the pulling action that accompanies the above-mentioned pushing, but if the suction tube 27 is stationary obliquely as described above, there is less resistance and removal is facilitated.

After the finger means 3 is clamped, the elevating means 7
The air motor 73 is turned by a predetermined angle, and the guide rail 72 is tilted forward via the crank mechanism 74. Therefore, the first finger means 3 can be moved to the carriage 4 as shown in FIG. When the folding is completed, the air motor 73 double-acts by a predetermined angle to move the guide rail 72 upward and make it horizontal, so that the first finger means 3 can return to the initial state as shown in FIG. The rear end of the guide rail 72 is pivoted to the front end of the supply table 1.

The second finger means 5 consists of a finger plate 51 on the upper surface and fingers 52 on both left and right sides of the lower part thereof, and is stacked vertically with the first finger means 3 as shown in FIGS. 2 and 3 at the start of packaging. arranged in relationship. The finger means 5 is provided with sliding plates 53 on both sides, and the sliding plates 53
is held slidably forward and backward by a slide rod (not shown) installed in the front and rear as described above, and is fixed in the middle of a chain 55 that is endlessly driven by a motor 54.

By driving this chain 55, the finger means 5 is reciprocated back and forth. Thus, when the first finger means 3 moves downward while moving forward, the rear paper piece B2 of the wrapping paper B
comes to cover the upper surface of the finger plate 51, and if the article to be packaged A and the wrapping paper B are transferred onto the conveyance table 4 while being held together, the front surface of the finger means 5 will be covered. Next, as shown in FIG. 5, the finger means 5 starts to move forward.

The finger plate 51 moves along the rear upper surface of the packaged object A, and at this time, the rear paper piece B2 is folded forward by the action of the finger plate 51, and the left and right protruding paper pieces are edge-folded by the fingers 52. .

When the second finger means 5 moves forward, a gap is created between the transport table 4 and the packaged object A on the supply table 1, and during this gap formation, the suction pipe 27 of the vertical holding means 2, etc. Go up and down.

A first taping device 8a is disposed above the rear portion of the conveyance table 4. The tape tensioning device 8a is disclosed in Japanese Patent Application No. 123245/1982 (May 20, 1986) filed by the present inventor.
The device proposed in the Japanese patent application) is preferably adopted, and the first
Then, the rear paper piece B2 and the front paper piece B1 of the wrapping paper B, which are folded and held by the second finger means 3 and 5, are joined with tape and sealed.

The conveyor table 4 is provided with a circumferential belt conveyor 41 along its longitudinal direction, and includes first and second finger means 3. 5 releases the sealed article A and moves back, the conveyor 41 is operated to move the packaged article A toward the binaural folding means 6 for the next step.

The binaural folding means 6 disposed at the end of the conveyance table 4 has an eighth
As shown in the figure, a horizontal upper plate 611 facing the center of the transport platform 4
and an inverted folding member 61 on both sides that includes a vertical side cutout 612 connected to the side of the upper plate 611 and drives left and right, and left and right folding members 61 vertically movable inside the folding member 61 It consists of a parallel folding plate 62, and an elastically supported auxiliary member 63 which is provided between the folding member 61 and the folding plate 62 and assists the folding of the folding member 61 by applying pressure from the side. A gently inclined inclined plate 6 is provided at the rear end of the vertical side plate 612.
13 is attached, and the rear end of the upper plate 611 also has an oblique section 614 that is continuous with the cut surface 613 and cut. As described above, the object to be packaged A advances and the protruding ears B are folded on both sides of the wrapping paper 8.

When it reaches the inclined plate 613, it rises above the inclined plate 613, faces further upward, and comes to stand on the inner edge of the upper plate 611. When the object to be packaged A comes to a predetermined position between the folding members 61, it stops there, and then the folding plate 62 descends along the side of the object to be packaged A, and folds the upright ear part B3 so that it becomes approximately vertical. .

After the folding plate 62 is raised, the folding member 61 moves inward, and the upper plate 611 folds the ear portion B onto the upper surface of the packaged object A. At this time, the auxiliary member 63 presses the side part to assist in folding. Thereafter, the tape pasting device 8b disposed inside the folding means 6 descends to seal the ends of the ears B3, completing all packaging. As for the tape pasting device 8b, the one in the earlier application by the present inventor is preferably employed as described above.
The pasting direction matches the traveling direction of the packaged object A, and a pair of left and right sheets are arranged.

The packaged items that have been wrapped in this manner are sequentially pushed from the end of the conveyor table 4 by the engagement piece 96 of the carry-out unit 95 and are discharged. A vertically movable product stock stand (not shown) similar to No. Product packages are piled up one after another.

In the above embodiment, the wrapping paper stock stand 9 is arranged at the bottom of the machine stand and the wrapping paper is pulled up and held in a vertical standby state. It is also possible to hold the wrapping paper in a similar vertical standby state by pulling down the wrapping paper one by one. It goes without saying that other changes can be made without departing from the invention.

(Effects of the Invention) As described above, since the packaging apparatus of the present invention starts packaging after holding the wrapping paper in a vertical standby state, the wrapping paper stock section can be provided at the bottom or top of the machine stand. Even if the item to be packaged is large, there is no need to separately secure the planar space required for the stock section of the wrapping paper, and the entire device does not become large. Moreover, in this device, the first finger means can maintain the folded state even after folding the front paper piece of the wrapping paper, and can perform a tight folding together with the folding of the rear paper piece by the second finger means,
The body tightening means that was conventionally necessary can be omitted.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the packaging device of the present invention, FIGS. 2 to S are longitudinal sectional front views showing the operating state of the device,
Figure 6 is a partially cutaway perspective view of the section shown in Figure 2. Figure 7 (a)
(b) is a partially cutaway perspective view of the section marked with ■ in Figure 2, and Figure 8 is a partially cutaway perspective view of the
FIG. (Explanation of symbols) 1... Supply stand, 2... Wrapping paper vertical holding means, 3
. . . first finger means, 4 . . transport platform, 5
. . . second finger means, 6. binaural folding means, 7. elevating means. One or more applicants Akihito Kuji

Claims (1)

[Claims] 1. A supply table (1) on which a substantially plate-shaped rectangular parallelepiped article (A) to be packaged is placed horizontally, and an article (A) to be packaged on the supply table (1).
Wrapping paper vertical holding means (2) for holding the wrapping paper (B) one by one in a substantially vertical state on the front end side of the paper, and a wrapping paper vertical holding means (2) for holding the wrapping paper (B) one by one in a substantially vertical state; sandwiching the package (A) together with the wrapping paper (B) and transporting it forward;
At the same time, place the front piece of paper (B_1) of the wrapping paper (B) on the item to be packaged (
A) The first step that folds upward and backward and edges-folds both sides.
reciprocating finger means (3), and a packaged article (A) forming a step lower than the supply table (1) and larger than the thickness of the packaged article (A) and transported together with the reciprocating finger means (3). A conveyor table (4) for receiving the transfer table (4) and a first reciprocating finger means (3) are lowered from the height of the supply table (1) to the height of the conveyor table (4) during their forward movement and their return movement. Sometimes the transport platform (
4) to the height of the supply table (1); and a conveyor table (4) held by the first reciprocating finger means (3) on the conveyor table (4). The back paper piece (B_
The second step is to fold 2) forward and perform edge-folding on both sides.
A packaging device comprising a reciprocating finger means (5) and wrapping paper folding means (6) disposed at the distal end of a carrier (4). 2. The packaging apparatus according to claim 1, wherein the conveyor table (4) has a belt conveyor (41) and its driving means.