JPS58125426A - Bag opening opening device in automatic bagging machine - 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 The present invention relates to a bag opening/opening device for an automatic bagging machine that performs bagging operations from bag supply to bag opening and product filling to completion of sealing.

Recently, compared to canned products, bottled products, and products packed in plastic containers, packaged products are not only more convenient to store and transport, but also have the advantage of being lower in cost and extremely easy to open. As a result, the number of products that can be applied to these products is increasing, including liquid or viscous products such as mayonnaise, juice, and liquid seasonings, and solid products such as hamburger steaks, meatballs, grilled eel, yakitori, and oden. It has become possible to automatically bag even liquid or viscous products, which mainly consist of solids.

On the other hand, in conventional automatic bagging equipment, the bags from the time of product filling until the completion of sealing are fed into packets on a packet conveyor, or they are fed to a gripper attached to a rotary table and transported intermittently to the next station. I have to.

In the latter gripper type, as shown in Fig. 1, the filling opening of a flat bag a is held by grippers (b) and (c) at both sealed ends c and a, which correspond to the bag opening device b). Interpose the block (e) on the suction cup between the opposing sides of (e), move the blocks (e) and (g) closer together, and make the suction cup) (e) come into contact with the bag a. (e) to the suction cup through negative pressure.

Next, sliding rods -)4 are slid in opposite directions to separate them from the suction cup, and the filling opening of bag a is opened. At this time, the grippers (b) and (c) that hold both ends of the coloring are moved slowly relative to each other to relax the filling opening of the bag a.

Next, the lifting column (W) descends, inserts the lower end of the air injection funnel (W) into the filling port, and through the compressed gas conduction pipe (W), compressed gas is ejected into the bag A to expand and open the lower part of the inside of the bag A. At the same time as bagging, the suction cup () and (e) are separated from the bag a to the state shown in FIG. 2. After the bag a is opened in this manner, the air injection funnel is raised.

As a result, when opening and shaping a bag, the suction cup () (e) must be used to suction both sides of the bag until the top of the bag is almost round, which can lead to errors in opening the bag, and in the unlikely event that the gripper (e) b) According to (c), if bag a is held by tilting both seal ends c and c to either the left or right, the compressed gas ejected from air injection 7 annel (wa) will be biased to one side. Since the bag is sprayed with water, only one side of the bag is opened and the other side is closed, which prevents the bag from being opened completely and hinders later loading and filling operations. Due to the pressure leaking from the filling port on the outer periphery, the seal ends Q and Q on both sides overcome the holding force of the grippers (B) and (C) and are displaced downward and inward. This caused incomplete sealing and wrinkles.

In view of the drawbacks of the conventional bag opening process, the present invention provides an automatic bagging machine that uses a small air pressure to completely open the bag and opens the bag without disturbing the subsequent work. As shown in Figs. 3 and 4, X is movable on casters and can be placed on the floor W with jacks λ. , a parallel gripping arm mechanism r... mounted on the drive shaft so as to be rotatable intermittently, and having a gripper 6.7 that can be opened and closed freely on the outer periphery of the turntable, and formed so as to be able to move toward and away from each other. A number of pouch stackers 2 are installed radially at equal intervals (eight in this embodiment), and are sequentially placed on the base 3 near the outer periphery of the turntable ≠ corresponding to each parallel gripping arm mechanism t...
A bag feeding station A with a bag feeding device IO equipped with the bag feeding device IO, a bag opening station B with a bag opening device Y of the present invention [-9 bag opening station B, and a solids input station with a solids input device 11 Station ○, filling station 7 D where mucus filling device 12 was set, preliminary deaeration station E where deaerator /3 was set, deaerator l≠ and heat seal device /j' were set. Preliminary heat seal station F, main heat seal station 0 with heat seal device/6 set, and cooling seal discharge station H with cooling seal device/7 and discharge device IT set, respectively, on the turntable ≠ Arranged around it.

In the figure, / is an arm actuating mechanism that interlocks the parallel gripping arm mechanism ♂ so as to be able to move toward and away from each other, and tensions and relaxes the filling opening of the bag a, and 20 is an operation panel.

The bag supply device IO at the bag supply station A is:
Using the vacuum cup 2/, pick up one bag at a time from the stacked bag stacker stacked in a standing position, and insert it into the open gripper 6°7 of the waiting parallel gripping arm mechanism. It is configured to hold both ends closed.

The bag opening/closing device Y of the present invention in the bag opening loss region B has a block opening/closing mechanism section λ2 which suction opens the bag filling port, and a block opening/closing mechanism section 22, as shown in FIG. The air injection nozzle 3 is inserted into the filling port of the bag a and compressed gas is sprayed to open and shape the bag a into a predetermined shape. 2 hanging boards facing each other! , 21
．． and the vacuum suction hole 27a.

Suction/pressing block 27 with 21a inside. Vacuum suction holes on the mutually opposing surfaces of 21, suction holes λ communicating with 27a, 21a and 4p4, silicon rubber 3/30 penetrated,
32 is attached and held in a predetermined state, and the hanging plate 2! ;,21. are sliding rods 33 that slide in mutually opposite directions by actuating devices (not shown);
3II- and the vacuum suction hole 27a.
.

2ra each has a suction vibrator 3 with one end connected to a vacuum source (not shown)! /-, 31s are communicated via joints 37 and 3♂. In addition, the bag opening mechanism section 2≠ is a support rod≠ in which a cylinder≠l at one end is fitted and fixed to the upper end of an elevating column≠0 that passes through a guide sleeve 3 installed on a base 3 in a vertically slidable manner. A long cylinder≠3 is penetrating and hanging down from the free end of the cylinder, and a compressed gas conducting pipe Hirohiro is connected to the upper end of the long cylinder≠3 in front of its lower end.

The solids input device l/ in the solids input station C is connected to a transfer/feeding device (not shown) that sequentially transfers containers containing pre-cooked and weighed solids, and is inverted and dropped by this transfer/feeding device. It is provided with a vertically movable guide tube≠3 that receives the solids in the container (not shown) and guides the solids into the bag a.

The mucilage filling device/2 in the filling station D is equipped with a hopper≠at-on the upper surface of the filling pump≠7 protruding from the filling machine main body 444, which stirs the mucus and then supplies it into the filling pump tA7. On the other hand, a guide nozzle 10 is attached to the mucus inlet opening on the lower surface, and a dripping nozzle is inserted vertically and slidably into a nozzle cylinder (not shown) fixed to the tip of the guide nozzle, 5"Q. The other end of a support plate j2 to which a removal extrusion rod jl is fixed at one end is fixed to the upper end of an elevating column !≠ which passes through a guide sleeve j3 set up on a base 3 so as to be able to slide vertically.

The deaerator 13 in the preliminary deaeration station/1 includes:
As shown in FIG. 6, the U-shaped bifurcated support arm is fixed at right angles to the upper end of the support rod 3j erected on the base 3! '1.' on the pair of blades in the notch groove j7 of B. A support shaft 60 that pivots in an X shape is tightened with a nut 61 so that the horizontal position can be freely adjusted, and a pair of upper and lower notches are provided in the dorsal projections 6≠ and 6j of the squeeze plates 62 and 63. Groove 41 A7 and blade! Insert the mounting holes (6ff and A) into the pair of upper and lower bolt holes (not shown) provided through the upper part of the holes T and J, so that the mounting position can be adjusted freely.
Screw together and tighten with nuts 70, 7/, and squeeze plate 62 on the inside of the upper part of blade j♂. Otsu 3 is attached face-to-face and removably. On the other hand, by wrapping a coil repellent strip 72 around the support shaft 60, each blade j♂, j is pivoted at the lower end of the cam follower 7, 73, 7! At the same time, the upper end of the triangular split plate cam 71r fixed to the upper end of the lifting rod 77 is inserted between the cam followers 7j'' and 76.

In addition, the squeeze plates 62, 1, 3 are made of flexible plate material 7 such as sponge.
It is configured to separate the bag tQ and prevent the bag a from being damaged.

As shown in FIG. 8, the heat sealing devices lj in the preliminary heat sealing station F face each other, and their mutually opposing surfaces are positioned at the filling opening of the bag a held in a predetermined state. A heat block I/, t2 is provided. Moreover, these heat blocks i/, ts are sliding rods ♂3. that slide in opposite directions. A hanging board? ! ,za6
The opposite surface has a deaeration groove 17. which forms a deaeration hole in the filling opening of bag a. Heater rods R and O are inserted into the axial center of the heat block t2, which is engraved with II, and is configured to heat to a predetermined temperature.

Deaeration equipment in the preliminary heat seal station F @
/≠ is a notch in the U-shaped bifurcated support arm 3 fixed at right angles to the upper end of the lifting rod 92 which vertically and slidably passes through the guide sleeve holder 1 set on the base 3, as shown in FIG. In the groove ≠, a pair of blades 7 and 6 are pivoted in an X shape, and a shaft 7 is tightened with a nut t so that the horizontal position can be freely adjusted. A pair of upper and lower notch grooves 103°10≠ cut out at /, /θ2 and the blade! ,
The mounting port 10! ;, Insert 10B so that the installation position can be adjusted freely, tighten the screws with nuts 107 and 10♂, and attach the squeeze plate 100 to the inside of the upper part of the blade holder 6 in a facing manner and in a removable manner. . On the other hand, by wrapping the coil strips 10 around the support shaft 7, each blade can be fixed. , Pivoted to the lower end of 6/10. ///cam follower//2. A lifting rod that energizes //3 to move towards each other, and that passes through the guide sleeve //44 that is set on the base 3 so as to be able to slide vertically //! One end of the cylinder/
Triangular split plate cam fixed to the other end of the bending/mounting member 16 fitted and fixed //♂ to the cam follower 112
, 113. Also, tatami plate, 10
O is a flexible board such as a sponge /l, /20 attached, and both upper corners of the flexible board /l, /20 are bifurcated as notched steps /, 2/, /22. The squeeze plate is integrated with armata 3, and when ioo rises, the squeeze plate 9 and 10
0 and flexible plate l/ri.

/20 is configured so that it does not touch the parallel gripping arm mechanism j.

The main heat sealing station GK Oker heat sealing device/6 is the heat sealing device/! in the preliminary heat sealing station F shown in FIG. It has the same configuration as the Heat Block/23. /211-
There is a deaeration groove ♂7 on the opposite side of /2 and /2. The only difference is that ♂t is not engraved.

The cooling seal device 17 in the cooling seal discharge station H includes sliding rods/27. which slide in opposite directions as shown in FIG. Cooling block attached to /2♂ via hanging plate /2, /3o /3/, 132
There are cooling holes such as through holes or cooling water holes in the axial center of the
33, /311- are provided to prevent the temperature of the cooling blocks /3/, /32 from rising.

Discharging device at the cooling seal discharging station H/
r is conveyor belt/3! It is an endless frame.

The operation of the automatic bagging machine X thus configured will now be described. First, at the bag supply station A, the bags a sequentially supplied by the bag supply device 10 are held at both ends by the grippers 6.7 of the parallel gripping arm mechanism t that is on standby. Next, the turntable ≠ is rotated intermittently by l pitch to correspond to the bag opening/opening device Y of the present invention for bag opening/lostsion B, and at this time, the suction/pressing blocks 27 and 21 of the block opening/closing mechanism section 22 are moved outward from each other. It becomes a state of intervening movement. Then, at the same time as the bag a stops at the opening and loss region B, the suction hole λ is closed, and the suction/pressing blocks 27 and 21 move inward from each other while keeping the negative pressure on the suction hole 30, as shown in FIG.
As shown in a), first pinch the filling opening of bag a. After this, the suction/pressing blocks 27 and 21 move outward from each other again while sucking the filling openings on both sides of the bag a, until the flat part of the air injection nozzle 23 can be inserted into the center of the filling opening. Open your mouth slightly.

The air injection nozzle 23 is lowered at the same time as the filling opening of the bag a starts to be opened, and the flat part of the air injection nozzle 23 is inserted into the filling opening, resulting in the state shown in FIG. 5(b).

At the same time as the air injection nozzle 23 is inserted into the filling port, the filling port of the bag a is clamped by the suction/holding blocks λ7, 21 to close the filling port as shown in FIG. 5(0). When the filling opening of bag a is closed and at the same time compressed gas α (bactericidal gas is better) is sent out from the air injection nozzle 23, bag a is shaped into a predetermined shape as shown in FIG. 5(d). Expand and open the bag. As soon as the bag opening is completed, the air injection nozzle 23 rises and passes through the filling port. At this time,
The adsorption/pressing blocks 27 and 2t move outward from each other,
At the same time as it is attracted to a predetermined interval position and opened, the elevating rod/36 is lowered by the cam operation, and the triangular split plate cam fixed to the upper end of the elevating rod/36 moves down together, so that the triangular split plate cam A pair of cam followers sandwiched on both sides/37,
When they approach each other due to the tensile elastic force of the tension coil springs 131 and 3, the parallel gripping arm mechanism and the pair of grippers 6.7 approach inward as one, so that the internal pressure of bag a is released from the filling opening. The filling mouth is fully shaped into an ideal shape by the action of spraying in the opposite direction. Then, the turntable ≠ is rotated intermittently by one pitch to correspond to the solid material input device/l of the solid material input station C. After the guide cylinder 1I-j is lowered and inserted into the bag a, the solid material is introduced into the bag a by a transfer/supply device (not shown).

Next, the guide tube≠! After raising the bag, the one-pitch turntable is rotated intermittently to position the bag a directly below the nozzle cylinder (not shown) of the mucus filling device 12 of the filling station/D. Then, fill the hopper≠r with a predetermined amount of mucus, and press the extrusion rod! / descends to remove drippings of mucus inside the nozzle cylinder.

Next, the turntable ≠ is rotated intermittently by one pitch to interpose it between the squeeze plates 62 and 63 which are in the pre-opened state of the deaerator 13 of the pre-deaeration station E, and at the same time the lifting rod 77 is raised. Along with this, the triangular split plate cam 7t also rises, and the cam follower 7! , 76 mutually coiled strips 72
If it separates against the force of the bullet, it becomes a blade! ? ,! The upper part moves to close around the support shaft 60, and the squeeze plates 1 and 2 are integrated with this.
．． 1 and 3 move slowly relative to each other, and press the lower half of the bag a through the flexible plates 7 and 10 for preliminary degassing. The squeeze plate 62.
43 will be opened.

Next, the turntable≠ was rotated intermittently by l pitches to remove the preliminary heat seal station F's deaerator/ll- and the heat seal station F's degassing device/ll- and the heat sealing device lj's partially opened squeeze plate, 100 questions, and heat block. ti,r
At the same time, a bag a is interposed between the two, and a heat block is placed between the two.
♂ A moves slowly relative to each other, and the filling opening of bag A is heat-pressed and preliminarily heat-sealed, leaving a partial degassing hole, and the lifting rod λ,
//J' rises at the same time, and when it rises to a certain predetermined height, the elevating rod octopus stops rising, but the elevating rod //J'' continues to rise, so the triangular split plate is attached via the bending attachment member /17. The cam l/l also rises and the cam follower //
2. //3 When the coils are separated from each other against the elastic force of the coil strips 10, the upper part of the blade 6 moves to close around the support shaft 97, and the clamping plate tassels together with this.

100 also moves slowly and presses the entire bag a through the flexible plate material // and /4Q to completely release the remaining residual air from the degassing hole formed in the filling opening of bag a. After the main degassing process, the triangular split plate cam//♂ and the bifurcated support arm 3 are lowered, and the squeeze plate and lOO are opened and restored.

Furthermore, the bag a that has been fully degassed and pre-heat-sealed in this way is transferred to the heat-sealing device 16 of the main heat-sealing station G, and is transferred to the heat block 123. /
241, the filling opening of bag a, including the deaeration hole, is reheated and pressed, and the contents are oily, hot (
For example, 10° C. to 100° C.), if the contents are sealed on the sealing surface, etc., which cannot be completely sealed by one heat sealing, the main heat sealing is performed completely.

Finally, the heat-sealed bag a is transferred to the cooling seal device 17 of the cooling seal discharge station H, where the filling opening is pressed by the cooling block /3/, /32, and the bag is cooled and finished by cooling to remove wrinkles. Seal TP. Then, the filling port is cooled to prevent the filling port from peeling off or bubbles that occur during natural cooling, and to reliably prevent bag a from being damaged due to retort high temperature and high pressure, am treatment, etc.

Then, the holding by the parallel gripping arm mechanism t at both ends of the bag 8 is released, and the bag a is allowed to fall onto an endlessly rotating discharge device/l conveyor belt/33 to be carried out of the machine.

Although the embodiments of the present invention have been mainly described with reference to Toybag (registered trademark) type bags a, flat bags with three or four side seals as shown in FIGS. 10(dl) to 10(d2) may also be used. A bag type bag a' may be used without any modification to the apparatus Y of the present invention.

Thus, the bag opening by the device of the present invention is performed using the air injection nozzle 23.
Since there is no leakage from the filling port when air is blown into the bag, much less pressure air is required than before, and a small-capacity compressor is sufficient, resulting in energy savings, cost savings, and economy. The pressure air overcomes the holding force of the seal ends C and C of the gripper 6.7 on both sides of the bag, so that the bag does not shift downward or inward, and it can always be shaped into an ideal full-open state, and each subsequent station. / It has excellent effects such as not causing any inconvenience or trouble.

[Brief explanation of drawings]

Figures 1 and 2 are explanatory diagrams of a conventional bag opening state using an air injection funnel, and Figures 3 and 4 are a plan view and a front view of an automatic bagging machine X incorporating the device Y of the present invention. , Figure 5 (al) (a2) (1)) (Q) (d 1 )
(a2) is an explanatory view of the main part operation showing the stepwise bag opening state by the device of the present invention, (al) is a plan view of (a2), (d2) is a front view of (dl), and FIG. Figure 3 V[-
M assembly side view, Fig. 7 is a side view of Fig. 3 ■-■ line, Fig. 8
The figure is an enlarged side view of the main part of the heat sealing device, Fig. 9 is an enlarged side view of the main part of the cooling sealing device, and Fig. 10 (+11
) to FIG. 10 (d2) are a side view and a front view, respectively, corresponding to FIG. 5 (ax) ((12)) of the present invention apparatus Y to which a flat bag type is applied. B... Lossage during bag opening C... Solids loading station D... Filling station E... Preliminary degassing station F... Preliminary heat sealing station G... Main heat sealing Station H...Cooling seal discharge station X...Automatic bagging machine Y...Bag opening device a...
・Bag b...Filling port C...Both sides sealed ends≠・
...Turntable 6,7...Glitzkr...
・Parallel gripping arm mechanism l/...Solid material charging device 12...Mucilage material filling device/3. /lI-...Deaerator/J-, /6...Heat cool device/7...Cooling seal device/1...Discharge device 22...Block opening/closing mechanism section 23...Air injection Nozzle 21I-...Bag opening mechanism section 27.21r...Suction/pressing block, 27a
, ,l f a...Vacuum suction hole 2, 30...
Suction holes 3/, 32... Silicone rubber Fig. 3 Fig. 10 (dl) Fig. 6 Fig. 7 凰 118 111 117 Fig. 8 Fig. 9

Claims (1)

[Claims] 1. At least the bag supply station, the bag opening/loss station, the filling station, the heat seal station, and the discharge station are configured to intermittently transfer and pack bags in an upright position with the filling opening facing upward at each station. In the automatic bag filling machine, elastic bodies are disposed in the bag opening loss region so as to sandwich the filling opening of the bag, and elastic bodies having suction holes formed therein are attached to the opposite sides. A bag opening device for an automatic bagging machine, which is provided in a circle so as to be freely interlocked with the suction hole.