JPS6126164Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention is a series of devices for filling paper containers with liquids such as milk, juice, alcoholic beverages, and other soft drinks. This invention relates to a device for attaching a spout to the paper container.

(Prior Art) As this type of paper container with a spout, a paper container with a flanged spout attached to the inner surface of a container body with a flange portion is disclosed in Japanese Utility Model Application Publication No. 53-63331. In addition, the present applicant previously proposed a method for attaching a spout in a carton by inserting the flanged spout into the insertion hole of the carton from the outside, receiving the flanged portion with a receiving plate from the outside, and then inserting the spout from the inside. Press with a hot plate,
Japanese Patent Application No. 55-41829 (Japanese Unexamined Patent Publication No. 56-418) describes a technique in which the mounting portion of the pouring tube that protrudes into the carton is bent and welded, and the mounting portion and the flange are tightly attached to the carton wall. -137951).

(Problems to be solved by the invention) A paper container in which the flange of the flange spout is attached to the inner surface of the container body disclosed in Japanese Utility Model Application Publication No. 53-63331,
It is completely unclear by what means the flange is attached to the container body and what kind of mechanical device is used for this attachment.

In addition, the applicant previously proposed in Japanese Patent Application No. 55-41829 (Japanese Unexamined Patent Publication No. 56-137981) that the flange spout is inserted from the outside into the insertion hole of the carton, and the The mounting part of the spout protruding into the carton is bent and welded using the receiving plate from the side and the hot plate from the inside, and the spout is narrowly attached to the flange. Not only does it take a long time to install, but because the bent mounting portion is narrow, there is a tendency for the installation to become unstable due to external shocks to the spout.

(Means for solving the problems) The present invention has been devised in view of the above points.

That is, the present invention efficiently inserts a spout having a mounting seat plate into an insertion hole of a paper container from the inside and welds the mounting seat plate to the inner surface of the paper container using a mechanical device. , which solved the problem.

Specifically, a paper container assembled from a carton is transported intermittently, the paper container is raised, and a spout having a mounting seat plate is inserted from the inside into an insertion hole of the paper container, and the spout is inserted into the insertion hole of the paper container. The loaded paper container is lowered once, fed one pitch, raised again, and the mounting seat plate is welded to the inner surface of the container using ultrasonic waves from the outer surface of the container. It is designed to be transported to the process. In reality, the part where the spout with the mounting seat plate is inserted into the paper container and the part where it is welded to the paper container are shifted by one pitch, so the paper container is raised and lowered to both parts at the same time. It is something that can be done.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

The liquid paper container spout attachment device of the present invention can be broadly divided into an assembled paper container conveying device A,
It is composed of a device B for inserting a spout into the paper container, a device C for welding the insertion spout to the paper container, and a lifting device D for lifting the paper container to the position of the spout insertion device and welding device.

The device of the present invention forms part of a series of devices as follows.

That is, to explain this with reference to the drawings, the series of devices is a: a carton supply section, b: a rotary table section for assembling and welding the bottom of the carton, c: an unloading section for assembled paper containers, and d: an intermittent transport section for paper containers. , e the insertion part of the spout, f the welded part of the spout, g the top assembly part of the primary paper container, h the filling part of the paper container with the liquid content, i the top assembly part of the secondary paper container, j the paper It consists of a top heating part of the container, a top welding part of the K paper container, and a rotating table part for discharging the L filled liquid paper container.

Each of the above-mentioned configurations of the apparatus of the present invention will be specifically explained.

The carton of Liquid Paper Container M is mainly made of paper.
The inner surface is laminated, coated, or vapor-deposited with aluminum, and the outer surface is laminated or coated with a synthetic resin, such as polyethylene, and the spout n is made of synthetic resin, such as polyethylene.

Conveying device A for assembled paper containers This conveying device A takes out an assembled paper container m from a rotary table part b for assembling and welding the bottom of the carton at its take-out part c, and transfers it to the machine base. A holding frame 2 for holding and transporting a paper container m is attached to two belts 1, 1 which rotate intermittently in the discharge direction.

Device for inserting a spout into a paper container B This insertion device B is a part for taking out a spout n having a mounting seat plate and inserting it into a paper container m. A gutter 4 is provided, and a stop 5 is provided at the lower end of the gutter 4.
However, there are also two cylinders 6 and 7 on the way for intermittently supplying the spout n. but,
These cylinders 6 and 7 are not necessarily necessary,
The spout n may extend from the stop 5 at the lower end through the supply gutter 4 with the mounting seat plate n' facing outward.

Further, the feeder 8 is provided on a T-shaped holding member 9 at a position opposite to the lower end stop portion 5 of the supply gutter 4 of the spout n having a mounting seat plate, and this holding member 9 includes: 2 sliding rods 10,
11 is installed, which includes two guide members 13, 13' and 1 fixed to the machine frame 12.
4 and 14'. Guide member 13,1
A connecting piece 16 is obliquely fixed to the connecting rod 15 at 3', and a small air cylinder 17 and a large air cylinder 18 are connected to the upper and lower ends of the connecting rod 15 through connecting members 19 and 19'. The other ends of these air cylinders 17 and 18 are located at the same position and are connected to each other via a T-shaped connecting piece 20, and sliding rods 10 and 11 penetrate through both horizontal parts of the T-shaped connecting piece 20. It has been fixed.

Welding device C for spout to paper container C This welding device C is arranged in parallel at the same height as the insertion device (B) for pouring spout n by Satsuka 8, and consists of a converter 21, a booster 22, and a horn 23. The tip of the horn 23 is provided with a concave portion 24 into which the spout n can fit. There is a suction guide hole 26 between the recessed part 24 and the opening 25, but even without this, the spout n
There is no difference in welding.

This welding device main body consists of a continuous rod 27 extending downward.
Guide rods 36, 3 connected to the air cylinder 28 by and supported by the machine frame 12
It is designed to slide along 6.

Lifting device D for lifting the paper container to the position of the pouring spout insertion device and welding device 29, a bent press plate 30 that presses the upper edge of the opening of the paper container m, and an air cylinder 31 that raises and lowers these. The length in the horizontal direction is such that it can simultaneously act on the paper container m during insertion and welding (Fig. 7), and the bent end of the push plate 30 has one wide part 30' and two narrow parts. It consists of a section 30''.

The support plate 29 and the push plate 30 are connected to the air cylinder 31 by connecting rods 32 and 33, and are moved up and down in response to the holding frame 2 of the paper container m that moves intermittently. The bent push plate 30 may be located on the opposite side (left side) of the support plate 29, different from the position shown in FIG. 3.

Further, above the holding frame 2 of the paper container m attached to the belts 1, 1, an upper machine frame 1 is placed at a position corresponding to the insertion device B of the spout n.
2, a fixed holding frame 34 for holding the paper container m from its outer periphery is provided protrudingly, and a fixed holding frame 34 is provided on the upper machine frame 12 at a position corresponding to the welding device C of the spout n.
A fixed holding member 35 that fits and holds the paper container m is provided in a protruding manner. This fixed holding member 3
5 is provided with grooves 35', 35' through which narrow portions 30'', 30'' of the push plate 30 move up and down.

In addition, the device B for inserting the spout n into the paper container m, the welding device C, and the elevating device D for these devices B and C for the paper container m, etc., can be replaced with an air cylinder by forward and reverse rotation by the rotation of a motor, etc. You can also do it.

(effect) Next, the operation of the device of the present invention will be explained.

The paper container m is assembled into a paper container m at the rotary table part b for assembling and welding the bottom part from the carton, and the paper container m taken out from the take-out part c is held in the holding frame 2 provided on the belts 1 and 1 and is held intermittently. is conveyed to a position below the insertion device B of the spout n.

A spout n having a mounting seat plate in the reservoir 3 flows down in the supply gutter 4 and reaches a stop 5 at its lower end, where it waits with the flange n' facing outward.

In FIG. 3, by the action of a large cylinder 18, the sliding rods 10 and 11, which are fixed at the rear end (right side) via a connecting piece 20, guide the guide members 13, 13' and 14, 14'. These sliding rods 10 and 1 slide backward (to the right) as
A suction cup 8 provided on a T-shaped holding member 9 fixed to the tip (left side) of the spout 1 contacts and attracts the mounting seat plate n' of the spout n. Next, by the action of the same air cylinder 18, the suction cup 8 holds the paper container m while adsorbing the spout n.
Return to the center position of the holding frame 2.

It is intermittently conveyed to the supply device B of the spout n.
The paper container m located at the position corresponding to
The paper container m is pushed up to the first stage X position, and the insertion hole of the spout n of the paper container m is
It faces the position of the spout n adsorbed by the suction cup 8.

Due to the action of the small air cylinder 17, the sliding rods 10 and 11 slide backward (to the right) in the same way as the large air cylinder 18, so that the spout n is inserted into the insertion hole of the paper container m. is inserted into the
The suction car 8 stops suction and returns to its original position by the action of the small air cylinder 17.

By the action of the lower air cylinder 31, the wide part 3 of the bent part of the push plate 30 is
0', press the upper side of the opening of the paper container m into which the spout n has been inserted, and pull it down to the second stage Y position.

The paper container m into which the spout n is inserted is fed one pitch in the direction perpendicular to the plane of the paper in FIG. 3 while being held by the holding frame 2, and the paper container m is inserted into the spout Proceed to the position corresponding to the welding device C of n.

As shown in FIG. 6, by the action of the lower air cylinder 31, the paper container m is pushed up by the support plate 29 via the connecting rod 32 and fitted onto the outer periphery of the fixed holding member 35, and the paper container m is pushed up by the support plate 29 through the connecting rod 32 and fitted into the outer periphery of the fixed holding member 35. The upper side reaches the position of the third stage X', and the spout n reaches the welding device C.
The concave portion 24 of the horn 23 faces the concave portion 24 of the horn 23 . In this case, the two narrow portions 30″ of the bent portion of the push plate 30
rises within the vertical groove 35' of the fixed holding member 35.

The spout welding device C slides forward (to the left) along the guide rods 36, 36 supported by the machine frame 12 by the action of the air cylinder 28 located below, and the tip of the horn 23 is moved. The recessed part 24 is fitted into the spout n, and the peripheral edge of the end of the recessed part 24 is pressed against the peripheral edge of the insertion hole of the spout n of the paper container m.

Here, ultrasonic waves from an external ultrasonic transmitter cause the horn 23 to connect to the mounting seat plate of the spout n via the converter 21 and the booster 22.
n' is welded to the inner surface of the paper container m.

In this case, the polyethylene of the paper container and the polyethylene of the spout are welded together at low temperature in a short time by ultrasonic vibrations, so no odor of polyethylene is emitted.

Furthermore, since the fixing member 35 and the horn 23 inside the paper container are both made of metal and have good thermal conductivity, the mounting seat plate n' and the outside of the paper container will not be welded together.

By the reverse action of the air cylinder 28, the welding device C of the spout returns to its original position.

Due to the action of the lower air cylinder 31, the two narrow portions 30'' of the bent portion of the push plate 30 move the opening side of the paper container m from the third position X' to the fourth position.
Pull down to the original position of Y′.

The paper container m to which the spout n is welded is attached to the belt 1
As shown in FIG. 6, the paper container is intermittently conveyed by the holding frame 2 in a direction perpendicular to the plane of the paper, and enters the next process of curling the top of the paper container.

In this manner, the present invention repeats the intermittent transport and lifting of the paper container m, and the insertion and welding of the spout n into the paper container m in a timely manner.

(Effect of the invention) Since the device of the present invention has the above-described configuration and operation, the spout having the mounting seat plate is made to protrude outward from the inside of the paper container for liquid. Since the welding is carried out using ultrasonic waves from the outer surface of the paper container, the welding is done at a low temperature and in a short time, so there is no odor left when the synthetic resin is welded inside the paper container, and there is no need for caution. When inserting and welding the outlet to the paper container, the simultaneous lifting and lowering of the base plate and the push plate by the action of one cylinder ensures that the paper container fits into its position and prevents the pouring of liquid into the paper container. Installation of the outlet can be carried out very efficiently and precisely.

[Brief explanation of the drawing]

Figure 1 A is a perspective view of a liquid paper container with a spout attached, B is a perspective view of the spout, and Figure 2 shows a carton assembled, a spout attached, and the liquid paper container filled with liquid and sealed. FIG. 3 is a front view of the main parts of the device of the present invention, and FIG. 4 is a schematic plan view of a series of devices.
The figure is a plan view of the main part with a part removed from the same as the above, Fig. 5 is a right side view of a part of the same as the above, Fig. 6 is a front view of the main part in a different position from Fig. 3, and Fig. 7 is the left side of the same as the above. The top view and FIG. 8 are right side views of the same as above. Code, A... Conveying device for assembled paper containers,
B... Outlet insertion device for paper container, C...
A device for welding the spout to the paper container, D... A device for lifting and lowering the paper container to the spout insertion device and welding device, m...
...liquid paper container, n...pour spout, n'...mounting seat plate,
1... Belt, 2... Holding frame, 3... Reservoir, 4...
...Supply gutter, 5...Stop part, 8...Satsuka, 9...
...Holding member, 17...Small air cylinder, 18
...Large air cylinder, 21...Converter, 22...Booster, 23...Horn, 24
...Concave portion, 28, 31...Air cylinder, 34
...Fixed holding frame, 35...Fixed holding member.

Claims (1)

[Scope of utility model registration request] A paper container transport device that intermittently transports a paper container for liquid; and a spout insertion device that inserts a spout having a mounting seat plate into an insertion hole provided in the transported paper container from inside the paper container. , a welding device that welds the mounting seat plate of the inserted spout to the inner surface of the paper container using ultrasonic waves; 1. A mounting device for a spout of a liquid paper container, comprising a moving device for moving the welding device to each of the welding positions.