JPH0780481B2 - Automatic tray filling device for packaging bags - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an automatic tray filling device for a packaging bag in a packaging device in which intermittently transferred packaging bags are sequentially made to correspond to respective work stations to perform a predetermined work. Regarding

(Prior Art) A flexible synthetic resin tray is filled in a packaging bag that is intermittently transferred to protect food items such as food items that may be damaged or may not retain the packaging form. Such an arrangement is disclosed in JP-B-62-58971 and JP-B-63-286.

(Problems to be Solved by the Invention) However, the above-mentioned conventional technique is by hand packing, and does not disclose automatic tray filling when the filling area of the flat packaging bag and the area of the tray are substantially the same. Absent. Recently, in order to improve the filling efficiency, there is a growing demand for the packaging bag to be squared and the appearance adjusted, and the development of a device that can automatically fill only the tray into the packaging bag before filling the product is required. There is.

The present invention has been made in view of the above demands, and an object of the present invention is to provide an apparatus that can automatically fill a packaging bag with a tray before filling a product.

(Means for Solving the Problem) In order to achieve the above object, an automatic tray filling device for a packaging bag of the present invention is a packaging bag in which intermittently transferred packaging bags are sequentially made to correspond to respective work stations to perform a predetermined work. In the device, a tray filling station is installed so as to face the bag mouth of the corresponding packaging bag, and a pair of trays whose facing intervals are sequentially narrowed from the tray set position provided in the tray filling station toward the bag mouth of the packaging bag. Guides, a pair of tip guides that are connected to the tips of the tray guides, and are controlled to move forward and backward so that the tips can be inserted into the bag mouth while advancing forward, and from the tray set position to the tips of the tray guides. An inclined guide portion is provided which inclines upward toward the guide rod arranged between the pair of tray guides and the tray set position. A rear feeding piece for pushing the rear end of the tray to be fed to a predetermined standby position,
A tray pushing mechanism that pushes the rear end of the tray pushed to the standby position to the bag mouth, and a tray pushing mechanism that rises after the pushing and retracts to the upper part of the tray setting position and descends. A tray provided by the tray pushing mechanism is bent in a roof shape by the pair of tray guides that gradually narrows the facing interval with the inclined guide portion of the guide rod, and the tip of the tray is squeezed as the tray moves forward. The packaging bag is filled by being guided by the tip guide inserted into the mouth.

(Operation and Effect of the Invention) According to the tray automatic filling device for a packaging bag of the present invention having the above-described configuration, the tray supplied to the tray set position has its rear end at a predetermined standby position by the rear feeding piece of the tray pushing mechanism. The preceding tray which has been pushed to the standby position is pushed to the front pushing piece and the trailing end to the bag mouth of the packaging bag. Then, as the tray is pushed, the tray is warped in a roof shape by a pair of tray guides that gradually narrows the facing interval with the inclined guide portion of the guide rod, and is advanced to be guided by the tip guide inserted into the bag mouth of the packaging bag. It is filled in a packaging bag.

Therefore, there is an effect that a tray having an area slightly smaller than the bag area of the packaging bag can be reliably and automatically filled in the packaging bag, and the filling efficiency can be improved.

(Embodiment) An embodiment of the present invention will be described with reference to the accompanying drawings. First
The drawing is a partially cutaway plan view, FIG. 2 is a side view taken along the line AA of FIG. 1, FIG. 3 is a rear view taken along the line BB of FIG. 1, and FIG. The enlarged plan view shown in FIG. 5, FIG. 5 is a rear view taken along the line CC of FIG. 4, FIG. 6 is a perspective view of the tray feed rod, FIG. 7 is a perspective view of the tray a, and FIGS. FIG. 6 is a perspective view showing a deformation process up to filling of the tray a.

In the packaging apparatus of this embodiment, each of a plurality of grips g holds the vertical edge of the packaging bag (b) and intermittently transfers it to perform a predetermined work at each work station. One of the work stations is a tray. The filling station is ST. A tray set position 100 is formed in the tray filling station ST, and a tray supply mechanism 110 is arranged orthogonally. Further, as shown in FIG. 7, the tray a is made of a flexible synthetic resin and is provided with a rising edge portion c from the peripheral edge of the rectangular plate portion b so as to have a dish shape, and the rectangular plate portion b has a predetermined interval. A rib d is provided everywhere to ensure shape retention.

The tray supply mechanism 110 pushes a pair of rails 1 and 1 for guiding both side edges of the tray a in the longitudinal direction and the trays a on the rails 1 and 1 one by one to a primary supply position x shown in FIG. Conveyor belt 2 provided with pushing plates 3 at predetermined intervals
And the upper and lower air jet pipes P ₁ and P ₂ for sending the tray a pushed to the primary supply position x by the conveyor belt 2 to the tray set position 100. Further, the rails 1 and 1 are provided with side walls 1a and 1a, and the side wall 1a, which intersects with the tray set position 100 and interferes with the pushing of the tray a, is removed.

At the tray set position 100, a pair of tray guides are intermittently transferred and face the bag mouth (b) of the corresponding packaging bag (a).
4, 4 are provided, and the tray guides 4, 4 are provided by connecting with a pair of front end guides 11, 11 whose base ends are both outer sides of the front end portions of the tray guides 4, 4.
As shown in FIG. 3, the tray guides 4, 4 include slide guide rails 4a, 4a on which the tray a slides, and slide guide rails 4a, 4a.
The pressing pieces 4b, 4b are bent symmetrically and are inclined symmetrically toward the inside of the corresponding spaces. The sliding guide rails 4a, 4a are connected to the inside of the base ends of the tip guides 11, 11 by gradually narrowing the facing interval from the middle to the tip.

Further, the tray guides 4 and 4 at the portions intersecting with the rails 1 and 1 described above have the holding pieces 4b removed and the tray guides 4 and 4 are removed.
It is only the sliding piece 4a. This tray guide 4, 4
Are adjusting slots 5 and 5 fitted in the adjusting slots 7 formed in the support plate 6 at the base end, and screws 9 in different directions installed near the tip,
It is possible to adjust the facing distance in accordance with the width of the tray a by the guide width adjusting device 8 which is fixed to the tray guides 4 and 4 while being screwed into the tray guides 4 and 4.

As shown in FIG. 2, the support plate 15a provided over the machine frame 120.
The sliding rods 17, 17 of the support block 16 are inserted into the guide blocks 15, 15 fixed to the. Rotating support shafts 19, 19 are provided at both ends of the support block 16, and the levers 20, 20 to which the base ends of the tip guides 11, 11 are attached are fixed. Then, the interlocking plates 21 and 21 are fixed to the levers 20 and 20, respectively, and one interlocking plate
A shaft 22 provided in 21 is connected through a long hole 23 formed in the other interlocking plate 21.

Similar to the tray guides 4 and 4, the tip guides 11 and 11 are slide guide rails 11a and 11a on which the tray a slides, and presses that are bent up from the slide guide rails 11a and 11a and incline inward at corresponding intervals. The pieces 11b, 11b are provided symmetrically. Then, an arm 35 having a roller 36 at its tip is fixed to the lower surface of one of the tip guides 11, and a tension spring 18 is applied between the arm 35 and the support block 16 to narrow the tips of the tip guides 11, 11. Apply such a pulling force. One lever 20 fixed to the tip guide 11 is horizontally moved from a chain line position to a solid line position around the shaft 12 by a cam (not shown) provided on the drive shaft of the packaging device or the interlocking shaft of the shaft. It is connected to a sliding lever 13 via a link 14 (Fig. 4). By horizontally swinging the lever 13, the support block 16 is advanced from the position shown by the chain line in FIG. 4 to the position shown by the solid line, and the tip guides 11, 11 are inserted into the bag mouth (b).

As shown in FIG. 5, an oscillating plate that oscillates to each position of a solid line and a chain line by vertically moving a rod 39 about a support shaft 37.
A pressing piece 41 fixed to an operating rod 40 provided on the swing plate 38 is brought into contact with the roll 36 of the arm 35. 42 is a stopper provided on one side of the support plate 15a,
8 rocking is restricted.

As shown in FIGS. 1 to 3, a receiving piece 25 is provided at the tray set position A, and a front end guide 1 is provided from the front end of the receiving piece 25.
A guide rod 26 is arranged in the middle of steps 1 and 11. The guide rod
Reference numeral 26 denotes an inclined guide portion 26a which is formed to have a rear end lower than the tray set position A and inclines upward from before entering into a facing space between the tip guides 11, 11 and a horizontal guide portion continuous to the inclined guide portion 26a. The portion 26b is formed. The guide rod 26 cooperates with the tray guides 4 and 4 and the tip guides 11 and 11 to transform the tray a to be pushed into a roof shape.

Further, as shown in FIGS. 2 and 3, above the outer side of the tray guide 4 and the tip guide 11 on one side, a movable wheel 30 in which a grooved wheel 29 is fitted is arranged above and below a horizontal rail 28 supported by a vertically movable rod 27. A pair of tray pushing rods 32, 32 that move on both sides of the guide rod 26 are installed on a horizontal plate 31 protruding from the moving vehicle 30.
Is attached to configure the tray pushing mechanism 130. The tray pushing mechanism 130 is configured such that when the grooved wheel 29 reaches the tip of the horizontal rail 28 and stops, the vertical movement rod 27 rises, and after the ascent, the grooved wheel 29 is retracted to the base end of the horizontal rail 28 and then lowered. Is controlled by a feed control mechanism (not shown). Tray pushing rod 32,3
As shown in FIG. 6, 2 is a front pushing piece 34 at each end.
And a rear pushing piece 33, the rear end of the tray a supplied to the tray set position 100 by the forward movement of the moving vehicle 30 is moved to the standby position y where a part of the rear pushing piece 33 reaches the tip guide 11. At the same time, the front end of the preceding tray a, which has already been pushed to the standby position y by the front pushing piece 34, is pushed.

A guide plate 43 is arranged above the tip guides 11 and 11 and in front of the guide rod 26. The guide plate 43 is attached to the lower end of an arm 45 which is rotatably supported by a rotary shaft 44. The guide plate 43 is always moved to the second position by the spring elasticity of a spring (not shown).
The tray a is held in the posture indicated by the chain line and is pushed up and rotated by the tray a that is pushed and deformed into a roof shape, so that the front end faces the inside of the bag mouth (b) of the packaging bag (a). As a result, the return elasticity of the tray a deformed into the roof shape causes the tray a
Prevents the tip guides 11, 11 from coming off the pressing pieces 11b, 11b.

The present embodiment has the above-mentioned structure, and the trays a are laid face down on the rails 1 and 1 of the tray supply mechanism 110 and fed one by one by a device (not shown). The air is blown and blown to the tray set position 100 by the air jetted from the air jet pipes P ₁ and P ₂ . At this time, the front pushing piece 34 and the rear pushing piece 33 of the tray pushing rod 32 are in a state of standing by before and after the tray setting position 100. Simultaneously with the feeding of the tray a to the tray setting position 100, the moving vehicle 30 of the tray pushing mechanism 130 advances and the rear pushing piece 33 pushes the rear end of the tray a.
Tray a has sliding guide rails on both sides with tray guides 4 and 4.
It slides on 4a and 4a. As the tray guides 4, 4 face each other, the distance between the tray guides 4 becomes narrower, and the tray a is deformed into a roof shape as shown in FIG. To the standby position y and stop. Then, the preceding tray a that has been pushed to the standby position y is pushed to the front pushing piece 34, moves forward and squeezes the leading end to insert the leading end guide 11 into the bag mouth (b) of the packaging bag (a). , 11 and guide plate 43
It is pressed by and is filled in the packaging bag (a).

In synchronization with the start of the pushing, as shown in FIG.
Horizontal swinging from the chain line position to the solid line position advances the tips of the tip guides 11, 11 and opens the packaging bag by a known means such as approaching the grip g or sucking with a suction cup (a).
Insert it in the bag mouth (b). Further, the swing plate 38 shown in FIG. 5 is pulled by the rod 39 into a horizontal posture shown by a solid line, and the operating rod is moved.
Push the roll 36 with the pressing piece 41 attached to 40,
The front end guides 11 and 11 are expanded from 21 to the solid line position by 21, 21. Therefore, the front pushing piece of the tray pushing rod 32 is
34 passes between the tip guides 11 and 11 without resistance.

When the moving vehicle 30 stops at the forward position, the vertical moving rod 27 ascends and raises the horizontal rail 28, and the moving vehicle 30 is pulled back by the rod 30a, returns to above the tray set position 100, and moves up and down. The moving rod 27 descends to make the front pushing piece 34 and the rear pushing piece 33 of the tray pushing rod 32 stand by before and after the tray setting position 100.

By repeating the above-mentioned pushing operation, the tray a is automatically filled in the packaging bags (a) which are intermittently transferred and sequentially corresponding to the tray filling station ST.

The filling of the tray a is performed on the packaging bag (a) held horizontally, the packaging bag (a) is held in a vertical posture as it is transferred, and the tray a is dropped to the bottom of the packaging bag (a) by its own weight. Or push it in to completely fill.

In the above-mentioned embodiment, a flexible tray a made of synthetic resin or the like is filled, and the automatic filling of the tray a having an area slightly smaller than the area of the packaging bag (a) is intermittently transferred. Not only can it be applied at high speed according to the speed of the machine, but also when there is a space between the packaging bag (a) and the tray a, it can be handled without problems.

[Brief description of drawings]

The attached drawings show an embodiment of the present invention. Fig. 1 is a partially cutaway plan view, Fig. 2 is a side view taken along the line A-A in Fig. 1, and Fig. 3 is a rear view cut along the line BB in Fig. 1. Figures and 4 show tip guides 11,11
FIG. 5 is an enlarged plan view in which FIG. 5 is separated, FIG. 5 is a rear view taken along line CC in FIG. 4, FIG. 6 is a perspective view of a tray pushing rod, FIG. 7 is a perspective view of tray a, and FIG. FIG. 9 is a perspective view showing a deformation process until the tray a is filled. 4,4 ... Tray guide, 11,11 ... Tip guide, 26 ... Guide rod, 26a ... Inclination guide part, 33 ... Rear pushing piece, 34 ...
... front pushing piece, a ... tray, y ... standby position, (a)
…… Packing bag, (b) …… Bag mouth, ST → Tray filling station, 100 …… Tray set position, 130 …… Tray pushing mechanism.

Claims (1)

[Claims] 1. A packaging apparatus in which packaging bags to be intermittently transferred are sequentially made to correspond to respective work stations to perform a predetermined work, and a tray filling station is installed facing a bag mouth of the corresponding packaging bag, and the trays are provided. From the tray set position provided in the filling station toward the bag mouth of the packaging bag, a pair of tray guides that sequentially reduce the facing interval and the tray guide are connected to the tip of the tray guide, and forward and backward are controlled so that the tip is advanced at the time of forward movement. Provided between the pair of tray guides are a pair of tip guides that can be narrowed and inserted into the bag mouth, and an inclined guide portion that is sequentially inclined upward from the tray set position toward the tip of the tray guide. A guide rod provided, and a rear feeding piece for pushing the rear end of the tray sequentially supplied to the tray setting position to a predetermined standby position,
And a tray pushing mechanism that pushes the rear end of the tray pushed to the standby position to the bag mouth, and raises after pushing and moves backward to the upper part of the tray setting position and descends. The tray is pushed by the tray pushing mechanism, the tray is warped in a roof shape by the pair of tray guides that sequentially narrows the facing interval with the inclined guide portion of the guide rod, and the tip end is swollen as the tray moves forward, An automatic tray filling device for a packaging bag, characterized by being guided by the tip guide inserted into the bag mouth to fill the packaging bag.