JPH0223413B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a bag opening supply device.

(Conventional technology) Currently, relatively small parts for automobiles, electrical products, etc. are produced in factories, then hand packed by workers into bags for a certain number of bags, which are then placed in cardboard boxes, etc. Shipping.

Furthermore, a device in which the work of hanging a bag on a cardboard box by mechanical operation is known from Japanese Patent Laid-Open No. 55-9844.

(Problem to be solved by the invention) However, the bags used for packaging as described above are
Since they are generally made of a relatively thin synthetic resin film, there is a problem in that opening them takes a lot of effort and does not make much progress.

In addition, similar problems occur in supermarkets and other supermarkets when customers put their purchased items into synthetic resin film bags, and as a result, when things get busy, customers are forced to do this work themselves. be.

The method disclosed in Japanese Patent Application Laid-Open No. 55-9844 does not use a cylindrical film, but rather forms a bag in advance and mechanically hangs it on a cardboard box. The drawback is that it takes time and effort to set up and is not efficient.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to efficiently supply bags in an open state to a worker.

(Means for Solving the Problems) In order to achieve the above objects, the present invention provides the following apparatus.

That is, a cylindrical film is pulled out from a film support frame formed by folding a cylindrical film multiple times so that it can be pulled out and fitted onto the outside, and is fed by a guide device in an open state toward a film receiver, and the film support frame to be fitted is fed. A bag opening/feeding device consisting of a lifting device, a film supporting device capable of holding the end of a cylindrical film fitted on a receiver together with the receiver, and a cylindrical film heat sealing and cutting device disposed above the receiver. It is.

(Example) The embodiments shown in the drawings will be described below.

The illustrated one has two bag receivers, and is equipped with a bag fitting device configured to alternately fit into the receivers while forming a bag using a cylindrical film. Fig. 1 is a front view, Fig. 2 is a side view, Fig. 3 is a plan view, and Fig. 4 is a diagram showing an embodiment.
The figures are a sectional view taken along the line A-A in FIG. 1, and FIG. 5 is a rear view. However, to avoid such drawings from becoming complicated,
Further, for convenience of explanation, appropriate parts are omitted and cut out.

First, the cylindrical film is pulled out from a film support frame made by folding the cylindrical film multiple times so that it can be pulled out and fitted onto the outside, and is fed by a guide device toward a film receiver, and is then moved from the elevating device of the film support frame into which it is fitted. To explain, in FIGS. 1 to 3, 1 and 1' are opposed to a block 4 rotatably supported at the center of the top plate of the support frame 3 fixed to the lower support part 2c of the machine frame 2. Bag receivers symmetrically fixed via support plates 5, 5, respectively, which receivers 1, 1'
It consists of a frame body, and one end of the support plate 5 is integrally formed with one bottom edge of the frame body.

Therefore, the receivers 1, 1' are horizontally rotatable about the pivot at the center of the top plate of the support frame 3.

Reference numeral 6 denotes a film support frame fixed to the tip of a rod 9a of an air cylinder 9 attached to a support plate 8 fixed from the upper support part 2a of the machine frame 2 via four struts 7. A cylindrical film 10 is fitted onto the support frame 6. Tubular film 1
0 is a locking portion 1 whose lower end is provided on the support frame 6
1 and 11, and is folded upward from here along the support frame 6 like a rose with a very small pitch in a so-called multi-fold form, so that it is folded back outward at the upper end and pulled out downward. It's summery. Therefore, the cylindrical film 1
0 can be fed out extremely smoothly by holding its lower end 10a and pulling it downward.

Reference numerals 12 and 12 are guide pieces that are attached to the lower end of the support frame via a connecting plate 13 and spring-equipped hinges 14 and 14, respectively, so as to be able to rotate only inwardly. Cutouts 15, 15 are formed. The guide pieces 12, 12 are for guiding the cylindrical film into an open state.

Next, FIG. 4 shows a heat sealing and cutting device for a cylindrical film, and this device is provided in the middle support portion 2b of the machine frame 2.

Support plates 16 and 17 are fixed to the tips of piston rods 18a and 18a of air cylinders 18 and 18, respectively, which are mounted opposite to each other on the machine frame.A heater 19 and a cutter 20 are mounted on the support plate 16. A rubber receiver 21 such as the one described above is attached to the support plate 17. In FIGS. 4 and 6, 22 is a frame of the heater 19, and this frame 2
In addition to the heater 19, clamping rubbers 23, 23 for clamping the film between the heater 19 and the upper clamping rubber 23 are attached to the heater 19, and a cutter 20 is received between the heater 19 and the upper clamping rubber 23. A gap 26 is formed for this purpose. Specifically, the heater 19 is a nichrome wire stretched over its surface. The frame body 22 has a spring 25 at the tip of two guide rods 24, 24 fixed to the support plate 16.
A slit 22a is formed at the back of the cutter 25 to allow insertion of a cutter 20 fixed to the support plate 16.

27, 27 are a pair of folding links,
This link is rotatably connected at the center, and further rotatably connected at both ends to supports 28, 28, 28, 28 (only two are shown) fixed to both ends of the upper edges of the support plates 16, 17, respectively. ing.

Therefore, in the heat sealing and cutter device as described above, when the air cylinder is operated properly, the heater 19 and the rubber receiver 21 meet at the center, sandwiching the film, and forming a fold at the bottom of the bag by the links 27, 27. The frame 22 slides on the guide rods 24, 24 against the springs 25, 25 toward the support plate 16, so that the tip of the cutter 20 is connected to the heater 19 and the clamping rubber. The film is cut by protruding from the surface of the film 23.

Next, a description will be given of the film supporting device that can freely hold the end of the cylindrical film fitted into the receiver together with the receiver.
is a columnar film holding member whose head 29a is in the shape of a suction cup, and these four film holding members are connected to the machine frame 2 and the support frame 3, respectively.
Rotating shafts 30, 30 installed between the back plate 3a of
It is fixed to via an L-shaped support 31.
FIG. 5 shows a drive mechanism for the rotation shafts 30, 30. That is, small sprockets 32, 32 are fixed to the rear ends of the rotation shafts 30, 30, respectively, and a large sprocket 33 is rotatably supported on the machine frame 2.
Between 2, 32, and 33, an endless chain 34 shown by a phantom line is stretched as shown.

The tip of a piston rod 36a of an air cylinder 36 rotatably attached to the machine frame 2 via a support piece 35 is attached to the large sprocket 33 via a mounting member 37 that is rotatable relative to the sprocket 33. connected.

Therefore, when the air cylinder 36 operates and its rod 36a protrudes, the large sprocket 3
3 rotates, and this is connected to 2 through the endless chain 34.
The transmission is transmitted to the two small sprockets 32, 32, and the small sprockets 32, 32 rotate in opposite directions, whereby the film holding member 2
9, 29, 29, and 29 simultaneously rotate as shown by the imaginary lines in FIG. However, as will be described later, this air cylinder 36 is activated when the support frame 6 has descended to just above the receiver 1, so in reality, the holding member 29 is used to connect the support frame 6 to the receiver 1. The film will be sandwiched between them.

The configuration of this embodiment has been described above. In FIGS. 1 to 3, 38 is a limit switch attached to the support plate 8 so as to come into contact with the top plate of the support frame 6, and 39 is a guide rod fixed to the top plate. It is. Although not shown, this embodiment includes solenoid valves for the air cylinders 9, 18, 18, and 36, a plurality of timers to appropriately control the operation of these solenoid valves, and further controls the operation of the heater. A circuit for electrically connecting the timer, a solenoid valve, a heater, a limit switch 38, etc., and a starting switch inserted in this circuit and mounted on the machine frame 2 or other appropriate location are provided.

Now, to explain the operating state of this embodiment, first, the operator positions himself in front of the receiver 1 and turns on the start switch. When the start switch is turned on, the air cylinder 9 is operated, the support frame 6 is lowered, and the guide pieces 12, 12 attached to the lower end of the support frame 6 are positioned on both sides of the receiver 1. Therefore, at this time, the receiver 1 is sandwiched between the guide pieces 12, 12 on both sides, and further surrounded on its entire circumference by the lower part of the cylindrical film 10.

After the air cylinder 9 is activated, a certain period of time (1, 2
After a period of about 2 seconds), the air cylinder 36 is activated, the film holding members 29 rotate, and the heads 29a are attached to the notches 15 of the guide piece 12.
The cylindrical film 10 is closely attached to the side surface of the receiver 1 through the cylindrical film 10 along with the corresponding portion thereof. Therefore, the cylindrical film 10 is held between the holding member 29 and the side surface of the receiver 1 at four locations.

Furthermore, after a certain period of time, the air cylinder 9 is operated again with the lower part of the cylindrical film 10 being held, and the support frame 6 is raised and returned to its original position.

Therefore, the cylindrical film 10 is pulled out from above the support frame 6, and as a result, the cylindrical film 10 is stretched from the receiver 1 to the support frame 6.

When the support frame 6 returns, the limit switch 38 is activated, which activates the air cylinders 18, 18 of the heat seal and cutter device, and the bottom of the cylindrical film 10 is folded at the corresponding position. Heat-sealing is performed and the bag is cut above the heat-sealed portion so that the lower part becomes one bag while the upper part returns to its original state (the state shown in FIG. 1).

When this heat sealing and cutter work is performed, the corresponding position of the cylindrical film 10 is squeezed inward, but the guide piece 1
2, 12 can swing inwardly against the spring in the hinge 14, so that this operation is carried out smoothly.

The air cylinder 36 is activated again by the time-up signal of the timer of the heater 19, and the clamping member 2
9 returns to its original position and the film is released from being held.

Then, when the operator rotates the receivers 1 and 1', the bag a fitted onto the receiver 1 is obtained as shown in FIG.

Here, the operator only has to properly hold the opening a' of the bag a and insert parts such as electrical products from above into the frame of the receiver 1. The bottom part a'' of a falls into the frame of the receiver 1.

While carrying out this operation, or before starting this loading operation, the operator can turn on the start switch, and by the same action as before, the new bag can be transferred to another receiver when the loading operation is finished. 1' has been fitted in advance.

As described above, according to this embodiment, by fitting the bag onto the receiver 1, it is not necessary for the operator to open the bag. There are the following methods:
That is, as shown by the imaginary lines in FIG. 3, two conveyors 41 and 42 are arranged in this embodiment,
The cardboard box 43 may be conveyed to the lower part of the receiver 1 in advance by a conveyor.

The position of the cardboard can be easily controlled by known means.

Although one embodiment of the present invention has been described above,
The number of receivers 1 is not limited to two, and may be one or three, and the fitting device for fitting the bag onto the receivers is not limited thereto either.

In any case, according to this embodiment, the packaging work for the parts, which conventionally required 13 people, only required 5 people, and in addition, the film thickness of the conventional bag was changed from 25μ to 40μ to make it easier to open. This has the advantage that the thickness required is only 10μ.

(Effects of the Invention) The present invention has the effect that since the bag fitted into the receiver is obtained in an open state, there is no need for the operator to open the bag, and work efficiency is improved accordingly. .

Since the cylindrical film is drawn out from a supporting frame formed by folding it multiple times and fitting it outside, bags can be obtained continuously from the cylindrical film.
The bag opening is fitted onto the receiver at the same time as the bag is made, and the bag opening is already open when the cylindrical film is pulled out from the film support frame, making it easy to fit the bag opening onto the receiver. It is characterized by efficient bag opening supply work.

[Brief explanation of drawings]

1 to 6 are drawings showing an embodiment of the present invention, in which FIG. 1 is a schematic front view, FIG. 2 is a schematic side view, FIG. 3 is a schematic plan view, and FIG. A-A
Sectional view, Figure 5 is a partial rear view, Figure 6 is a partial rear view, and Figure 6 is a partial rear view.
It is a sectional view taken along line B-B. 1, 1'...receptor, 6...tubular film support frame,
12, 13... Guide piece, 19... Heater, 2
0...Cutter.

Claims (1)

[Claims] 1. The cylindrical film is pulled out from the film support frame, which is made by folding the cylindrical film multiple times so that it can be pulled out, and is fitted onto the outside. The cylindrical film is fed to the film receiver in an open state by a guide device, and the film support frame to which the film is fitted is raised and lowered. A bag opening supply device comprising a device, a film supporting device capable of holding the end of a cylindrical film fitted on a receiver together with the receiver, and a cylindrical film heat sealing and cutting device disposed above the receiver.