JPS624034A - Product discharge and packaging bag carry-in method in automatic packaging - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is an apparatus for automatically packaging foods such as grains. This invention relates to a new method for transporting packaging bags.

(Prior Art) Various devices have been proposed and adopted for automatically packaging not only foods such as grains but also other products, but unlike fully automatic packaging production in large-scale factories,
When performing various types of packaging in a relatively small-scale factory, a pair of independent weighing machines and automatic packaging machines are usually used, and a predetermined amount is sent intermittently from the scale in synchronization with the wrapping operation of the automatic packaging machine. The weighed items to be packaged are received by the filling hopper of the automatic packaging machine, put into a packaging bag waiting at the bottom of the filling hopper, and after being sealed, sent out from the automatic packaging machine as a packaged product. Therefore, on the automatic packaging machine side, it is necessary to discharge the packaged product from the packaging section each time each wrapping operation is completed, and to transport a new packaging bag into the packaging section in preparation for the first wrapping operation. In order to shorten the packaging time cycle and realize efficient high-speed packaging in automatic packaging, it is desirable to shorten the time spent discharging products and carrying in packaging bags.

(Problems to be Solved by the Invention) In view of the above-mentioned points, the present invention solves the above-mentioned problem by discharging the packaged crystallized material from the packaging section and carrying in a new packaging bag to the packaging section almost simultaneously. The purpose is to satisfy requests.

(Means for Solving the Problems) The present invention provides a packaging section that is located at the end of a packaging bag carry-in route and includes a packaging bag clamping means located at the upper part facing the end of the route, and a product holder located at the lower part. is provided, and in conjunction with the packaged product release operation of the packaging bag clamping means, causes the curved discharge plate hidden below the packaging bag carry-in path to protrude upwardly onto the product holder passing in front of the end of the path, thereby releasing the product. This method is characterized by a product discharge and packaging bag carrying method in automatic packaging in which a packaged product is pushed out and discharged from a stand, and a new packaging bag sent out from the end of the path is guided by the back surface of a curved discharge plate and sent to a packaging bag clamping means.

(Example) The method of the present invention will be explained below using an automatic packaging machine shown in the drawings.

FIG. 1 shows the overall configuration of an automatic packaging machine, which includes a packaging film loading section A, a packaging film bottom sealing section B, and an article filling section C9.

A packaging film roll 1 is supported by a support shaft 2 and is freely rotatably loaded in the packaging film loading section A.

This packaging film roll 1 is made by winding a tubular packaging film 1a made of synthetic resin into a paper tube. It reaches the bottom seal part B. A pair of traction rollers 5a and 5b that sandwich the tubular packaging film 1a from above and below are mounted in front of the bottom sealing portion B of the packaging film, and one of the traction rollers 5b
Tubular packaging film 1 by driving the motor
a is pulled out from the packaging film loading section A.

Packaging film loading fA A and packaging film bottom seal part B
The sense mark printed on the tubular packaging film 1a is read at the appropriate position between. For example, a photoelectric sense mark reader 6 is provided. The sense marks are printed on the tubular packaging film la at intervals of 111 times the length of one bag, and the sense mark reader 6 controls the drive motor 7 of the traction roller 5b on and off based on the sense mark reading signal, thereby printing the tubular packaging film la. The film 1a is pulled intermittently by the length of one bag.

The packaging film bottom seal part B is a tubular packaging film l
Perform the bottom sealing operation and cutting operation for each bag length on a, and then
A packaging bag A as shown in the figure is formed, and a tubular packaging film 1 is formed.
In FIG. 7, which is separated from A, 8 is the bottom seal portion that seals the bottom of the packaging bag A, and S is the cut portion made by the above-mentioned cutting.

That is, the packaging film bottom seal part B has a heat block 10 for heat welding placed between the tubular packaging film la and the upper part.
and a presser block 11 are arranged with a narrow gap, a cutter 13 is arranged at the lower part, and these are actuated by an air cylinder 12.14, and the cutter 13 is connected to a heat block lO for thermal welding. and the presser block 11. After the tubular packaging film Ia is pulled by the pulling rollers 5a and 5b for a length of one bag, the cylinders 12 and 14 are activated.
The heat block 10 for heat welding seals the bottom of the tubular packaging film 1a sandwiched between it and the heat welding table 15, and at the same time, the presser block 11 clamps the tubular packaging film la between it and the presser table IB. The cutter 13 ascending from below passes through the tubular packaging film la pressed in two places between the heat welding table 15 and the presser table 1B to cut the film and separate the bottom-sealed packaging bag la. Incidentally, the cutter 13 cuts the fissurem with a slight time lag with respect to the bottom sealing operation.

The thus separated packaging bag waits with its tip pushed into the packaging bag carrying means 17, and after the preliminary wrapping operation in the packaging section is completed, it is carried into the packaging section as described later. The structure of the packaging bag carrying means 17 is not particularly limited, but in the drawing, it consists of a conveyor 17a and pressure rollers 17c that press against each conveyor roller 17b of the conveyor from above, and the conveyor 17a is driven by a drive motor 18. be done.

The packaging section provided facing the terminal end of the packaging bag carrying-in means 17 includes a pair of clamping means 19 for clamping both ends of the bag opening of the carried-in packaging bag 17 at a position above the terminal end; Vacuum means 20 located at the upper level and forcibly opening the closed bag mouth of the carried-in packaging bag I
and is provided with a product holder 21 below the terminal end of the packaging bag carry-in path and directly below the clamping means. Further, a filling hopper 22 shown in FIG. 1 is installed in the upper part of the packaging section.

More specifically, as is clear from FIG. , 19b is guide rod 2
3.23, so that it can be moved in a lateral direction perpendicular to the above-mentioned direction of separation and separation. In the structure shown in FIG. 2, one clamp part 19a is attached to the frame 24.
are fixedly connected to each other, and the other clamp piece 19b is attached to the frame 24 via a solenoid 25, and the other clamp piece 19b moves toward and away from the one 19a by the action of the solenoid 25a. Further, in the above-mentioned mounting, the frame 24 is driven forward and backward by another solenoid 25b, so that both the clamp pieces 19a and 19b are moved laterally as a unit.

The vacuum means 20 has a pair of vacuum heads 2Qa and 20b that perform relative movement toward and away from each other while holding the packaging bag 1 between them, and an intake hole 2B is opened at the center of each of the opposing surfaces of the vacuum heads 19a and 19b. Of course, this intake hole 28 is connected to an air pump (not shown) via a pipe 27. In addition, in Figure 2,
Reference numeral 28 denotes a guide rod that supports and supports each vacuum head 19a, 19b and guides the above-mentioned relative movement in the direction of separation and separation, and 29a and 29b indicate air cylinders as means for driving the movement.

By the way, since the packaging bag A is made of a synthetic resin film and is fed into the packaging section in a flat and tightly adhered form, it is difficult to open the bag opening at once against the adhesion force using only the vacuum means 20. This may result in traffic jams, which can lead to packaging errors. For this reason, a pair of left and right air nozzles 30.30 are piped directly above the vacuum means 20, facing the tip of the bag opening of the clamped packaging bag.
The air emitted from No. 30 gives a slight expansion to the tip of the bag opening.

The opening of the bag is then separated by the vacuum means 20,
In other words, the opening is made easy.

°The vacuum means 20 also integrally includes means for sealing the opening of the packaging bag, and each vacuum head 20a, 20
A heat welding heater 31 is fixedly attached to one of the opposing surfaces b, and a heat welding table 32 is fixedly attached to the other side.

The product holder 21 is pushed up to a horizontal position by an air cylinder 33 shown in FIG. 1 when the packaging bag I is filled with the object to be packaged, and serves to support the bottom of the packaging bag I.
At this time, the product holder 21 is vibrated by driving the vibration solenoid 34, so that the product to be packaged is reliably and densely packed inside the packaging bag.

Reference numeral 35 indicates a mechanism for adjusting the height of the product holder 21 according to the length of the packaging bag to be used.

The packing material filling section C is equipped with a filling hopper 22 that receives the packing material supplied from a measuring device (not shown) directly above the filling section C, and this filling hopper 22 is installed as shown in FIGS. 1 and 4. is fixed to the pedestal 3B via a support plate 37, and two rubber skirt plates 38 and 38 are attached to the hopper outlet.
These skirt plates 38. are fastened to face each other.
38 is guided downward in a state in which the cross section has a substantially U-shape or a substantially C-shape to form a substantially cylindrical filling chute portion 39 that communicates with the neck hopper discharge port.

On the outside of the filling chute portion 39, a chute shape regulating plate 40.40 is positioned corresponding to each of the above-mentioned skirt plates 38, 38 and surrounding them.

A bracket arm 41 is connected in a protruding manner to the upper rear surface of each chute shape regulating plate 40, and this bracket arm 4! By attaching the intermediate portion to the pedestal 36 using a support shaft 42, the chute shape regulating plate 40 is suspended from the pedestal 38. Also, a weight 43 is attached to the tip of the bracket arm 41.
is attached, a biasing force for pressing the skirt plate 38 from the outside is applied to each chute shape regulating plate 40, and the diameter of the filling chute portion 39 is reduced by the deformation of the skirt plate 38 thereby. The mounting position of the weight 43 can be changed along the elongated hole 44.

Furthermore, a curved discharge plate 45 is installed in a position directly below the terminal end of the packaging bag carrying means 17. This curved discharge plate 45 is pushed out by the push-out mechanism 4B of FIG. 3 from the above-mentioned infiltration position to a position directly below the clamping means 19 that passes over the product holder 21, thereby performing a product discharge operation and a packaging bag carrying-in operation, which will be described later. The mechanism 4B uses an air cylinder 47 to rotate a rotary shaft 49 via a link 48, and a pusher block 51 held by the rotary shaft 49 via a lever 50 to push out the curved discharge plate 45 as described above. The plate 45 has a rotation fulcrum 52 different from the rotation axis 49.
The curved shape is such that when the curved discharge plate 45 is pushed out to a position directly below the clamping means 13, the back surface 45a of the plate connects the end of the packaging bag carrying means and the clamping means 19 in a curved shape. It is considered to be connected to

Next, to explain the operation of discharging the product and carrying in the packaging bag, as shown in Fig. 5 (I), when the required wrapping operation is applied to the packaging bag A that has been carried in before the packaging section, the following A new packaging bag is expected in the packaging bag - person means 17. Further, the product holder 21 moves upward to a horizontal position, supports the bottom of the packaging bag I, and vibrates it. Furthermore, the curved discharge plate 45 is hidden below the terminal end of the packaging carrying-in means 17 and is waiting there.

When the preceding packaging bag A is filled with a fixed amount of material to be packaged, and the bag opening is sealed by the heat welding heater 31 to produce a product, the vacuum means 20 is separated from the product A, and the clamping means 18 releases to the product. At the same time, the push-out mechanism 4B operates as shown in FIG. 5 (II), and the curved discharge plate 45 moves forward toward the product pedestal 41, and on the other hand, the product pedestal reef! moves downward, and the packaging bag carrying means 17 is activated to feed the new packaging bag 1 that is waiting during said means.

The curved discharge plate 45 that moves forward protrudes and discharges the products on the product holder 41 that moves downward, and also reaches directly below the clamping means 19 and discharging the packaging bag loading means 17 and the clamping means 13.
Therefore, as shown in FIG. 5 (III), a new packaging bag A sent out from the end of the packaging carrying-in means is guided by the curved discharge plate rear surface 45a and changes direction from the lateral direction to the upward direction, and then passes through the clamp part. 19a and 19b, and then, as shown in FIG. 5 (IT), the clamp means 19 clamps the new packaging bag A, and the vacuum means 20 also clamps the bag opening, and opens the next bag opening. Prepare for action. As a result, the curved discharge plate 45 moves back to its original position.

In the packaging section, air is blown from the air nozzle 30 to the tip of the bag opening of the clamped packaging bag A as shown in FIG. 18. The bag openings are loosened by mutually approaching lateral movement in the direction of arrow a in 19, and the vacuum heads 2Qa and 2
By moving 0b apart in the direction of the arrow mark, the bag opening is opened wide as shown in FIG. 6 (II). And the filling hopper 22
When a weighed item is loaded into the filling chute section 38 from the filling hopper 22, the weight of the falling item causes the skirt plate 38 and the chute shape regulating plate 40 to expand outward. The lower ends of the plate 3B and the chute shape regulating plate 40 protrude into the open bag opening, and the packaging bag A is rapidly filled with the items to be packaged through the expanded filling chute 39, as described in FIG. The wrapping operation, product ejection, and loading of a new packaging bag are repeated.

(Effects) As described in detail above, according to the present invention, in conjunction with the packaged product release operation of the packaging bag clamping means, the curved discharge plate sneaking under the packaging bag carry-in route is moved in front of the end of the carry-in route. It protrudes upward onto the product pedestal and pushes out the packaged product from the product pedestal and discharges it, and at the same time guides the package formed from the end of the packaging bag carry-in path on the back side of the discharge plate and sends it to the packaging bag clamping means. The product discharge and the loading of a new packaging bag can be carried out almost simultaneously by the operation of a single curved discharge plate, allowing high-speed packaging and simplifying the structure of the automatic packaging machine.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a partially cutaway side view of an automatic packaging machine using the method of the present invention, FIG. 2 is a perspective view of the packaging section, and FIG. 3 is a view of the curved discharge plate section. Perspective view, Figure 4 is a perspective view of the packing material filling section, Figure 5 (1) (■) (m)
(IT) is an explanatory diagram of packaging operation, Fig. 6 (1) (I
I) is an explanatory diagram of the opening operation of the bag opening, and FIG. 7 is an external view of the packaging bag. 17... Packaging bag carrying-in means (packaging bag carrying route) 19...
・Packaging bag clamping means 21...Product pedestal 45...Curved discharge plate 45a...Back side of curved discharge plate A...Packaging bag C...Packaged product D...Packaging Department Patent Applicant Quinn Light Denshi Seiko Co., Ltd. Representative Patent Attorney Takashi Suzue - Figure 4 6 (n)

Claims (1)

[Claims] (1) At the end of the packaging bag carry-in route, a packaging section including a packaging bag clamping means located at the upper part facing the end of the route and a product holder located at the lower part is provided, and the packaging bag clamping means is already wrapped. In conjunction with the product release operation, the curved discharge plate hidden below the packaging bag carry-in path is projected upwardly onto the product holder passing in front of the end of the path, pushing out the packaged product from the product holder and ejecting it. A method for discharging products and carrying in packaging bags in automatic packaging, characterized in that a new packaging bag sent out from the end of the path is guided by the back side of a curved discharge plate and sent to packaging bag clamping means.