JP2023089546A - Tray inserter and packaging machine - Google Patents

Abstract

To solve a problem that the conventional tray inserter has a complicated configuration because constructed to bend a tray into a V-shape and fill the same into a bag, and hence incurs an increase of a manufacturing cost and takes long time required in a process to fill the tray (task time).SOLUTION: A tray inserter 20 of the present invention comprises a delivery mechanism 23 that sucks a tray Y carried by a tray-transport conveyor 21 by a sucker 22 and rotates the same 90 degrees into delivery. By the sucker 22 of the delivery mechanism 23, the tray Y is depressed on a vertical hold plate 24, so that the tray Y depressed on the hold plate 24 is retained and held by a retainer rod 25 of a hold mechanism 26. The hold plate 24 is provided with a bag-opening hopper 27 below a lower end thereof. A lower portion of the bag-opening hopper 27 is inserted into a mouth of a carried bag X to open the mouth, so that the tray Y depressed on the hold plate 24 is pushed into the bag X by a pusher plate 28 of a push-in mechanism 29.SELECTED DRAWING: Figure 4

Description

The present invention relates to a tray inserting device for inserting a tray into a bag and a packaging machine equipped with this tray inserting device.

A packaging machine that stores and packages an object placed on a tray in a bag is already known. Such a packaging machine first inserts the tray into the bag and then fills the bag with the items to be packaged. A tray inserting device for inserting a tray into a bag is disclosed, for example, in Patent Document 1 and the like.

The tray inserting device disclosed in Patent Document 1 includes a pair of tray guides provided with leading end guides which are inserted into a bag opening of a bag (packaging bag) while narrowing the leading end thereof, or retracted while expanding the leading end thereof, in a tray filling station. a bent bar having a proximal end higher than the tray guide and a distal end lower than the distal end of the tray guide. Further, it has a rear feeding piece for advancing the tray supplied to the tray guide to the preceding position, and a front feeding piece for bending the tray at the preceding position into a V-shape by a bending bar to fill the bag and advance it. , a reciprocating feed rod is provided for forward movement downward and backward movement upward. In addition, the small bag filling station is equipped with a small bag chute that enters and exits the bag mouth and throws the small bags into the valley of the V-shaped folded tray. Then, the tray is folded in a V shape as it is advanced toward the mouth of the bag, and filled into the bag.

JP-A-8-26218

However, since the tray insertion device has a structure in which the tray is folded in a V shape to fill the bag, a folding bar or the like is required for gradually folding the tray while guiding the tray with a tray guide. A leading edge guide or the like is required to be inserted into the bag mouth while narrowing the leading edge and retract while widening the distance between them, which complicates the structure and increases the manufacturing cost.

Also, since the trays must be well-folded into a V-shape, the time required in the process of filling the trays (task time) is increased, and as a result, the throughput of a packaging machine or the like equipped with this tray insertion device is reduced. could drop significantly.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a tray inserting device and a packaging machine capable of simplifying the structure and increasing the tray filling speed.

The tray inserting device of the present invention includes a delivery mechanism that sucks a tray conveyed by a conveyor by means of suction cups, rotates and delivers the tray, and a suction cup of the delivery mechanism that presses the tray against a holding plate to hold down the pressed tray. A holding mechanism held by a bar, a bag mouth opening hopper provided at the bottom of the holding plate, the lower end of which is inserted into the bag mouth of the bag to open the bag mouth, and the bag held by the holding plate via the bag mouth opening hopper. a pushing mechanism for pushing the tray into the bag by means of a pushing plate.
The packaging machine of the present invention is provided with the tray inserting device, and a filling hopper is provided at a packaging material filling position for filling the bag in which the tray is inserted with the packaging material. A lower hopper portion is provided, and an opening piece is provided in one of the pair of lower hopper portions, and the tray is placed to one side so as not to hinder the filling of the item to be packaged by the opening piece. Characterized by

According to the tray inserting device of the present invention, the tray conveyed by the conveyor is rotated by the transfer mechanism and transferred to the holding plate, and is held down by the pressing bar of the holding mechanism. With the opening of the bag opened by the bag opening hopper, the tray can be pushed into the bag without being bent by the pushing plate of the pushing mechanism. As a result, the structure can be made relatively simple, and the tray can be well accommodated in the bag. Moreover, since the tray does not need to be folded, the tray filling speed can be increased, and the processing capacity of a packaging machine or the like equipped with this tray inserting device can be improved.

FIG. 1 is a plan view schematically showing a packaging machine equipped with the tray inserting device of the present invention; Plan view of the bag mouth opening mechanism of the packaging machine A side view showing the operation of the bag mouth opening mechanism of the packaging machine. FIG. 2 is a side view showing the tray inserting device of the present invention; FIG. 2 is a front view showing the delivery mechanism of the tray insertion device of the present invention; FIG. 2 is a partially cutaway front view showing the tray inserting device of the present invention; FIG. 2 is a front view showing the holding mechanism of the tray inserting device of the present invention, the open bag hopper, and the like; FIG. 4 is a side view showing the holding mechanism of the tray insertion device of the present invention; A plan view showing a holding mechanism and a bag opening hopper of the tray insertion device of the present invention. FIG. 2 is a plan view of the open bag hopper of the tray inserting device of the present invention; FIG. 2 is a front view of the open bag hopper of the tray inserting device of the present invention; FIG. 2 is a side view of the open bag hopper of the tray inserting device of the present invention; FIG. 2 is a front view and a partially enlarged side view showing a state in which a tray is inserted in the tray insertion device of the present invention; Front view of the pushing mechanism of the packaging machine of the present invention Front view of the filling hopper of the packaging machine of the present invention Explanatory drawing simply showing one-sided operation of the filling hopper of the packaging machine of the present invention.

Hereinafter, a tray inserting device of the present invention and a packaging machine provided with this tray inserting device will be described with reference to the drawings.
As shown in FIG. 1, the packaging machine 1 includes a tray inserting device 20 of the present invention for inserting a tray Y into a bag X, and an article (one or more items) to be packaged into the bag X into which the tray Y is inserted. A filling hopper 80 for filling is provided. In addition, the equipment in which this packaging machine 1 is installed is equipped with a control device 2 that controls each component of the packaging machine 1 including the tray insertion device 20, and downstream of the packaging machine 1, the packaged An unloading conveyor 3 is provided for unloading the bags X downstream.

In the packaging machine 1, eight pairs of clamp arms 4 are supported on the periphery of a circular rotor 5 as a conveying device. A clamp 4a (see FIGS. 1, 7, etc.) is provided to clamp the part. Rotational driving force of a drive motor (not shown) arranged below the circular rotor 5 is transmitted to the circular rotor 5 via an intermittent rotation transmission mechanism (not shown), thereby 5 intermittently rotates clockwise (in the direction of arrow R1) at a pitch of 45° corresponding to the circumferential interval of the eight sets of clamp arms 4;

The circular rotor 5 has a bag supply position (1) for supplying an empty bag X, a bag mouth opening position (2) for opening the mouth of the bag X, and a tray insertion position (3) for inserting the tray Y into the bag X. , a pushing air blowing position (4) in which the tray Y is surely pushed in by the air injection pushing tool 75 and air is blown into the bag X to inflate the bag X; ), a degassing position (6) for degassing the air in the bag X, a sealing position (7) for sealing the opening of the bag X filled with the items to be packaged, and cooling the sealed portion of the bag X. A cooling and unloading position (8) is provided for unloading the sealed bag X. In other words, the positions assigned to the circular orbit R of the circular rotor 5 are provided with a tray insertion position (3) for inserting the tray Y into the bag X, and a packaging material filling position (5) after this. Then, the bag X in which the tray Y is inserted is filled with the items to be packaged. Although not shown, a printer is provided between the bag supply position (1) and the bag opening position (2) to print the expiration date and the like on the bag X. In addition, in this embodiment, a forced air blowing position (4) is provided between the tray insertion position (3) and the package filling position (5), but the forced air blowing operation may be performed as required. It may be provided, and this operation may be omitted so that nothing is done in this position (5).

The circular rotor 5 intermittently rotates at each position (1) to (8) while stopping for a predetermined time. That is, the bag X supplied to the clamp arm 4 at the bag supply position (1) is in a suspended state with both side edges thereof clamped by the clamps 4a, and is rotated by one pitch at a pitch of 45°. It is intermittently transported along the track R toward the cooling/unloading position (8). Needless to say, the packaging machine 1 is not limited to eight positions.

At the bag supply position (1), bags X are stacked in a bag box 11, and the stacked bags X are sucked one by one from the top by suction cups 12 and supplied to the clamp 4a. It is hung with both side edges being clamped. At the bag mouth opening position (2), both the front and back sides of the bag X are sucked by the opening suction cups 13, and the bag mouth is half-opened. is spread out. At the bag mouth open position (2), the distance between the tips of the pair of clamp arms 4 is slightly reduced to open the bag mouth.

A bag mouth opening mechanism 14 is provided at the bag mouth opening position (2). As shown in FIGS. 1 to 3, the bag mouth opening mechanism 14 includes a rocking arm 15 that can move back and forth from the bag mouth opening position (2) to the tray insertion position (3) and can be raised and lowered, and a rocking arm. 15, a pair of parallel rotating shafts 16 protruding in the horizontal direction (rotational direction of the circular orbit R), and extending obliquely downward from each of the rotating shafts 16 to extend the bag mouth in the front-rear direction (circular direction). An opening tool 17 that expands in the radial direction of the table) and links 18A and 18B for opening and closing the opening tool 17 are provided. The opening member 17 is a plate-shaped mounting member 17a mounted on the rotary shaft 16, and two bent wires are mounted on the mounting member 17a so as to extend obliquely downward and inward. It is composed of an opening wire 17b for opening the bag mouth.

When the bag X intermittently stops at the bag opening position (2), the swing arm 15 and the opening member 17 descend, and as shown by the phantom lines in FIG. open mouth In this state, the opening member 17 is moved to the tray insertion position (3), and the opening state of the bag opening is maintained. At the tray insertion position (3), after the bag mouth opening hopper 27, which will be described later, is lowered and inserted into the bag mouth, the swing arm 15 and the opening member 17 are raised to return to the original bag mouth opening position (2). to wait for the next bag X.

A tray inserting device 20 for inserting the tray Y into the bag X is provided at the tray inserting position (3). As shown in FIGS. 1 and 4, the tray insertion device 20 includes a transfer mechanism 23 that transfers a tray Y conveyed by a conveyor (tray transfer conveyor) 21 by sucking it with suction cups 22 and turning it 90 degrees. , a holding mechanism 26 which presses the tray Y against the vertical holding plate 24 by means of the suction cups 22 of the transfer mechanism 23 and presses and holds the tray Y pressed against the holding plate 24 by means of a pressing bar 25; A bag mouth opening hopper 27 is inserted into the bag mouth of the bag X conveyed to the tray insertion position (3) to open the bag mouth, and a pushing plate 28 pushes the tray Y pressed by the holding plate 24 into the bag X. A pushing mechanism 29 is provided.

As shown in FIGS. 1, 4, and 5, in the delivery mechanism 23, a mounting base 31 to which a pair of suction cups 22 for sucking the tray Y is attached is attached to a piston rod of a slide air cylinder 32 so as to be retractable. It is Furthermore, the slide air cylinder 32 is attached to a rotating arm 34 . A base end of the rotary arm 34 is fixed to a rotary support shaft 33 rotatably supported by a support base 35 via a bearing 38 . A base end portion of a rotating air cylinder 36 is attached to the support base 35 so as to be able to swing. The piston rod of the rotating air cylinder 36 and the rotation support shaft 33 are connected by a rotating arm 37, and the rotation support shaft 33 rotates as the piston rod protrudes and retracts. Then, as shown in FIG. 4, the tray Y transported by the conveyor (tray transport conveyor) 21 is sucked by the suction cups 22 and turned 90 degrees via the rotating arm 34, after which the packaging machine 1 is moved. It is configured to transfer the tray Y by pressing it against a holding plate 24 that is arranged perpendicular to an installation surface (horizontal surface) or the like.

As shown in FIGS. 1, 4, and 6 to 9, the holding mechanism 26 and the bag-opening hopper 27 are fixed to a lifting support rod 46 by a bracket 43, and lifted and lowered integrally with the lifting support rod 46. do. As shown in FIG. 6, the lifting support rod 46 is movable between the solid line position and the phantom line position of the link mechanism 49, and is lifted and lowered while being guided by a support guide tube 48 erected on a base 47. do. The holding mechanism 26 includes a vertical holding plate 24 against which the tray Y is pressed by the suction cups 22 of the delivery mechanism 23, and a pressing bar 25 that holds the tray Y pressed against the holding plate 24 vertically. As shown in FIG. 12, the holding plate 24 is vertically attached to the front surface portion 41a of an inverted U-shaped fixing plate 41 which is attached so as to project upward from the rear surface of the open bag hopper 27. As shown in FIG. As shown in the plan view of FIG. 9, the holding plate 24 is set in the longitudinally central portion of the open bag hopper 27 so as to protrude upward.

On the surface of the holding plate 24, unevenness 24a (shown schematically in FIGS. 6, 7, etc.) is formed over substantially the entire surface on which the tray Y is held. Further, the holding plate 24 has both side portions 24b slightly bent toward the front side to guide the pressed tray Y so as not to move to both sides. Further, the lower part 24c of the holding plate 24 extends into the inside of the bag opening hopper 27, and has an inverted trapezoidal shape with a tapered lower part. designed to guide you.

As shown in FIGS. 7 to 9 and the like, a dogleg-shaped presser bar 25 that presses and holds the tray Y pressed against the holding plate 24 has its base end attached to a rotary shaft 53. are provided in pairs on the left and right. Also, the rotating shaft 53 is rotatably supported by the mounting plate 42 through a bearing 54 . A swing arm 55 is attached to the end of the rotary shaft 53 , and the end of the swing arm 55 is connected to a piston rod of a rotary cylinder 56 that is swingably attached to the mounting plate 42 . By moving the piston rod of the rotating cylinder 56 forward and backward, the presser bar 25 rotates to hold the tray Y pressed against the holding plate 24 and to move away from the holding plate 24 toward the front side. can be moved to

As shown in FIGS. 4, 6 to 8, etc., the pushing mechanism 29 is a pushing mechanism supported by cylinder support frames 57, 58, and 59 assembled laterally extending from the top of the lifting support rod 46. and a pushing plate 28 attached to the tip of the rod of the pushing air cylinder 60 via a mounting plate 61 . The pushing plate 28 is arranged directly above the tray Y pressed by the holding plate 24 , and the rod of the pushing air cylinder 60 extends to lower the pushing plate 28 to hold it against the holding plate 24 . The loaded tray Y is pushed into the bag X. Here, as shown in the partial side enlarged view of FIG. 13, the lower end portion (lower end surface) 28a of the pushing plate 28 is formed so as to be inclined downward as it moves away from the holding plate 24 so as to come into contact with the side surface of the tray Y. At the same time, a notch is formed so that the flange of the tray Y can be inserted, and when the push-in plate 28 descends, the tray Y is pushed in while maintaining contact with the holding plate 24. ing.

As shown in FIGS. 6, 7, 10 to 12, etc., the open bag hopper 27 includes a metal hopper upper body 51 that constitutes the hopper body, and a front side along the inner surface of the hopper upper body 51. hopper inner guide plates 62 and 63 made of thick resin sheets, and the left lower portion and right lower portion of the hopper upper body 51, which guide the tray Y downward from the front and rear. It has beak-shaped lower opening/closing plates 64 and 65 which are pivotally supported and can be opened and closed left and right. Further, the bag mouth opening hopper 27 is provided with a bag mouth width enlarging mechanism 66 that opens and closes the lower opening/closing plates 64 and 65 to the left and right, as will be described later. An inverted L-shaped hopper attachment member 52 is attached to the upper portion of the hopper upper body 51 , and this hopper attachment member 52 is fixed to the bracket 43 so that the entire bag mouth opening hopper 27 is attached to the elevation support rod 46 . Hanging.

Next, the bag opening hopper 27 will be described in detail. First, the hopper upper body 51 has a substantially octagonal shape in a plan view (however, it has a laterally long substantially flat shape), and has a shape that tapers toward the bottom. A notch 51a is formed on the front surface of the hopper upper body 51 so as not to interfere with the transfer of the tray Y from the transfer mechanism 23. The notch 51a may be provided as necessary. Just do it. A band member 67 is arranged along the outer surface of the lower part of the hopper upper body 51 , and the hopper inner guide plates 62 and 63 are attached to the hopper upper body 51 with mounting screws 68 or the like.

Also, hinges 70 are attached to both lower side surfaces of the hopper upper body 51 , and upper parts of the lower opening/closing plates 64 and 65 are attached to the lower part of the hinges 70 . Left and right link members 71 and 72 are attached to the hinge 70 and are substantially U-shaped in plan view. , and left and right link members 71 and 72 are connected so that they can swing vertically. The left and right link members 71 and 72 swing to open and close the lower opening/closing plates 64 and 65 in conjunction with each other. 10 and 11, a connecting piece 71b extending laterally is attached to one of the link members 71, and a retracting rod extending from an air cylinder 73 for opening and closing the lower hopper is attached to the connecting piece 71b. The ends are connected, and the lower opening/closing plates 64 and 65 are interlocked and opened/closed by the extension/retraction of the extension/retraction rod. The base end of the lower hopper opening/closing air cylinder 73 is attached to the hopper attachment member 52 so as to be able to swing.

After closing the lower ends of the lower opening/closing plates 64 and 65 by extending the extending/retracting rod of the lower hopper opening/closing air cylinder 73, the bag opening width enlarging mechanism 66 lowers the bag opening hopper 27 as a whole. The lower parts of the lower opening/closing plates 64 and 65 are inserted into the mouth of the bag X which has moved to the tray insertion position (3) and stopped intermittently. From this state, by retracting (raising) the retracting rod of the lower hopper opening/closing air cylinder 73, the lower ends of the lower opening/closing plates 64 and 65 are opened to the left and right, and the bag mouth is opened in the width direction of the bag X. It is configured to spread to In FIG. 10, only the inner hopper guide plates 62, 63 and the lower end portions of the lower opening/closing plates 64, 65 are shown. are indicated by phantom lines.

As described above, at the tray insertion position (3), the bottom of the bag mouth opening hopper 27 (the bottoms of the hopper guide plates 62 and 63 and the bottom opening/closing plates 64 and 65) ) is inserted, as schematically shown in FIGS. 10 and 11, the bag mouth is widened to open in the width direction by a bag mouth width enlarging mechanism 66 comprising lower opening/closing plates 64, 65 and the like. In this state, as shown in FIG. 13, the push-in plate 28 is lowered, so that the tray Y pressed against the holding plate 24 is pushed into the bag X. As shown in FIG.

At the pushed air blowing position (4), as shown in FIG. 14, an air injection pushing mechanism 74 is provided which has a vertically movable air injection pusher 75 having an air flow path formed therein. In this embodiment, an L-shaped mounting bracket 76 is attached to the lifting support rod 46, and a mounting plate 77 is horizontally provided on the mounting bracket 76. As shown in FIG. A support shaft 78 having an air passage is fitted vertically to the tip of the mounting plate 77 so as to be able to move up and down. Further, a pusher elevating cylinder 79 is vertically assembled to the mounting plate 77 in parallel with the support shaft 78 , and the extending/retracting rod of the pusher elevating cylinder 79 and the support shaft 78 are connected. When the bag X intermittently stops at the forced air blowing position (4), the lifting support rod 46 descends and the air injection pusher 75 is inserted into the bag mouth to blow air into the bag X. Furthermore, the extension/retraction rod of the pusher elevating cylinder 79 is extended, so that the air injection pusher 75 is further lowered, and the tray Y is inserted to the back side (lower side) of the bag X. As shown in FIG.

As shown in FIG. 15, a filling hopper 80 for filling a bag X into which a tray Y is inserted is moved up and down via a mounting portion 81 at a packing material filling position (5) for filling the bag X with the tray Y inserted. Attached to a rod 82, the filling hopper 80 moves up and down. The upper hopper portion 83 of the filling hopper 80 is filled with the articles to be packaged at a predetermined timing. A pair of lower hopper portions 84 and 85 below the upper hopper portion 83 are pivotally supported by hinges 88 to open and close the lower opening side. These lower hopper portions 84 and 85 are opened and closed via a link mechanism 87 by an open/close air cylinder 86 .

A tongue-shaped opening piece 84a extending obliquely downward is formed in the center of the lower end of one lower hopper portion 84 . Then, when the filling hopper 80 descends and the lower hopper portion 84 is opened, as schematically shown in FIGS. (The tray Y may be bent or bent by the opening piece 84a) and the articles to be packaged are filled.

At the degassing position (6), the air in the bag X is degassed by the degassing device 90, for example, by holding a pair of sponge bodies 91 close to each other from the side of the bag X. As shown in FIG. At the sealing position (7), the sealing device 92 heat-seals the open end of the degassed bag X. As shown in FIG. Also, the seal portion whose temperature has risen due to the heat sealing is cooled by the seal cooling device 93 provided at the cooling/unloading position (8). Then, when the sealed portion is cooled, the clamp 4a is separated and the bag X is carried out by the carry-out conveyor 3.例文帳に追加

With the above configuration, the tray Y conveyed by the conveyor 21 by the tray inserting device 20 of the packaging machine 1 is turned 90 degrees by the delivery mechanism 23 and delivered to the holding plate 24 , and is pushed by the pressing bar 25 of the holding mechanism 26 . be held down. With the bag opening opened by the bag opening hopper 27, the pushing plate 28 of the pushing mechanism 29 can push the tray Y into the bag X without bending it in a V shape.

Furthermore, the above-described configuration allows a relatively simple structure, which makes it possible to reduce the manufacturing cost of the device. Moreover, since it is not necessary to fold the tray Y into a V shape, the filling speed of the tray Y can be increased, and the processing capacity of the packaging machine 1 can be improved. Moreover, since the tray is inserted as described above, there is an advantage that a tray Y that is difficult to bend into a V shape can be used. In addition, since the tray Y can be inserted while the bag X is held in the vertical direction, and the items to be packaged can be filled in the bag X in the vertical direction in the next section, the throughput of the packaging work can be improved.

Further, in the tray inserting device 20, the lower end face of the pushing plate 28 of the pushing mechanism 29 is inclined downward as it separates from the holding plate 24, and a notch is formed so that the flange of the tray Y can be inserted. In spite of the simple structure, the tray Y can be pushed in while maintaining good contact with the holding plate 24 when the push-in plate 28 descends. Further, since the tray Y pressed by the holding plate 24 by the transfer mechanism 23 is pressed and held by the pressing bar 25, the pressing plate 28 of the pressing mechanism 29 pushes the tray Y even though the tray Y is pressed by the pressing bar 25. The tray Y can be inserted into the bag X without any trouble.

Further, since the unevenness 24a is formed on the surface of the holding plate 24, even when the tray Y is pressed by the pressing bar 25, the contact area of the tray Y with the holding plate 24 can be relatively small, and the tray Y can be and the holding plate 24, air can be interposed. Therefore, when inserting the tray Y with the pushing plate 28 of the pushing mechanism 29, the tray Y can be inserted satisfactorily.

Further, since the bag mouth opening hopper 27 is provided with a bag mouth width enlarging mechanism 66 for opening the bag mouth in the width direction of the bag X, the tray Y can be inserted into the bag X without any trouble without folding. can. In addition to simply inserting the bag mouth opening hopper 27 into the bag mouth, there is a bag mouth width enlarging mechanism 66 that widens the bag mouth in the width direction of the bag X. Y can be enlarged so that it can be easily inserted into the mouth of the bag.

A filling hopper 80 is provided at the packing material filling position (5). An opening piece 84a provided in this filling hopper 80 widens the mouth of the bag. The tray Y can be placed on one side of the opening and filled with the items to be packaged. With this configuration, the bag X in which the tray Y is housed can be satisfactorily filled with the items to be packaged, and the tray Y is not forcibly bent, thereby minimizing damage to the tray Y. be able to.

In addition, in this embodiment, there is no particular arrangement for the arrangement of the packaging machine 1 and the tray inserting device 20 . For example, in FIG. 1, the tray inserting device 20 is placed in front of the clamp arm 4 positioned at the tray inserting position (3), but the tray inserting device 20 may be placed at a position perpendicular to the tray inserting position (3) or at an angle. may be placed. Further, in this embodiment, the packaging machine 1 is a so-called rotary packaging machine having a circular circulatory conveying path. A so-called linear type or the like may be used.

INDUSTRIAL APPLICABILITY The present invention is useful in various tray inserting devices and packaging machines for inserting trays in advance into bags filled with articles to be packaged.

1 packaging machine 2 control device 5 circular rotor (conveying device)
11 bag box 14 bag mouth opening mechanism 17 opening tool (spatula)
20 tray insertion device 21 conveyor (tray transport conveyor)
22 Suction cup 23 Transfer mechanism 24 Holding plate 24a Unevenness 25 Presser bar 26 Holding mechanism 27 Bag opening hopper 28 Pushing plate 28a Lower end (lower end surface)
29 Pushing mechanism 32 Slide air cylinder 34 Rotating arm 36 Rotating air cylinder 46 Elevating support rod 51 Hopper upper body 56 Rotating cylinders 62, 63 Inner hopper guide plates 64, 65 Lower opening/closing plate 66 Bag opening width expanding mechanism 73 Lower hopper opening/closing air cylinder 74 air injection pushing mechanism 75 air injection pushing tool 78 support shaft 79 pushing tool elevating cylinder 80 filling hoppers 84, 85 lower hopper part 84a opening piece 86 opening/closing air cylinder X bag Y tray

Claims (6)

a transfer mechanism that picks up the tray conveyed by the conveyor with suction cups, rotates it, and transfers it;
a holding mechanism that presses the tray against the holding plate with the suction cup of the delivery mechanism and holds the pressed tray with the presser bar;
a bag mouth opening hopper provided below the holding plate, the lower end of which is inserted into the bag mouth of the bag to open the bag mouth;
a push-in mechanism for pushing the tray held by the holding plate through the bag-opening hopper into the bag by means of the push-in plate;
A tray insertion device comprising: 2. The tray inserting device according to claim 1, wherein the surface of the holding plate is uneven. 2. The tray inserting device according to claim 1, wherein the lower end surface of the push-in plate slopes down as it separates from the holding plate, and a notch is formed so that the flange of the tray can be inserted. 2. The tray insertion device according to claim 1, wherein the bag mouth opening hopper is provided with a bag mouth widening mechanism for widening the bag mouth so as to open the bag in the width direction. A packaging machine comprising the tray insertion device according to any one of claims 1 to 4,
A filling hopper is provided at a packing material filling position for filling the packing material into the bag in which the tray is inserted. A packaging machine, characterized in that an opening piece is provided in the opening, and the tray is placed to one side so as not to impede the filling of the article to be packaged by the opening piece. 6. The packaging machine according to claim 5, wherein at the forced air blowing position, there is provided an air injection pushing mechanism having a vertically movable air injection pusher having a channel for passing air therein. .

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