JPH0516085Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a packaging bag supply device, which is used for automatically filling and packaging foods and other items.

[Conventional technology]

As an example of such a packaging bag supply device, there is, for example, Utility Model Publication No. 16486/1986. This system uses a suction cup to suction the packaging bag one by one, and stops the suction when the box container on the intermittent moving transfer band stops at a predetermined position.
The packaging bag is dropped into the box container by its own weight.

[Problems that this proposal seeks to solve]

However, the openings of boxes and containers that are transferred intermittently are usually square or rectangular when viewed from above, and in the conventional device described above, both left and right ends of the packaging bag are connected to opposing openings in one direction of the square opening. It is inserted perpendicular to the edge.

For this reason, if the stopping position of the box/container shifts slightly in the left/right direction, or if the side edge of the packaging bag sucked by the suction cup is not vertical but slightly tilted, the bottom edge of the falling packaging bag will be placed on one side of the box/container. It hits the edge of the mouth and is not inserted securely, causing problems such as poor feeding.

This project solves the above problem by rotating the packaging bags separated one by one using a suction cup to a position on the diagonal line above the baguette, and then lowering the packaging bag to a position on the diagonal line of the baguette. By inserting the bag inside the top, the packaging bag can be reliably supplied.

[Means for solving problems]

In order to achieve the above purpose, the feeding device of the present invention includes an air cylinder and a guide slot that protrudes in the operating direction and has a straight part on the tip side and curves to one side on the air cylinder side, on the top of the lifting rod that moves up and down. A guide plate is fixed, and each support shaft of two sets of rollers rotatably inserted into the guide slot is pivotally connected to a movable plate arranged on both the upper and lower surfaces of the guide plate, and one support shaft is connected to a piston rod. Rotatably connected to the
A holder having a plurality of suction cups is fixed to the tip of a spindle plate attached to the lower movable plate, and a stopping position of the bucket which is intermittently transferred is provided on the opposite side of the curved part of the guide slot, and the lifting/lowering When the rod rises, the suction cup moves forward due to the pushing operation of the air cylinder and attracts the packaging bag, and due to its retracting operation, the suction cup moves backward and rotates on the bucket to position the packaging bag diagonally thereupon, and then the lifting rod The main feature is that the suction cup stops sucking when the suction cup descends, and then returns and rises again.

[Effect]

In the proposed device, when the lifting rod is in the raised position,
The air cylinder pushes out and the two rollers enter the straight part of the guide slot, the support plate moves forward, and the suction cup at the tip attracts the foremost packaging bag facing directly. The air cylinder then turns into a retracting operation, and the two rollers roll into the guide slot and enter the curve.

Therefore, the support plate attached to the movable plate rotates in the direction of the bag while retreating, and both ends of the packaging bag sucked by the suction cups are located on the diagonal line of the rectangular bucket.

In this state, the elevating rod descends, and the base plate, guide plate,
The support plate and the suction cup are lowered together, and the packaging bag is inserted into the bucket at a diagonal position. Thereafter, the suction cup stops suctioning, leaving the packaging bag in the bucket, the lifting lever rises, and the above operation is repeated thereafter.

〔Example〕

Hereinafter, drawings showing one embodiment of the present invention will be specifically described.

In the figure, 1 is a machine base of the device, and a holding part 2 is fixed on top of this machine base 1, and a pair of elevating rods 3 are attached to this.
is inserted so as to be movable in the vertical direction, and is moved up and down by a cam (not shown). A base plate 4 is attached to the upper end of the lifting rod 3, and a guide plate 5 is fixed to the upper surface thereof, and an air cylinder 6 is fixedly attached to this.

As shown in FIGS. 1 and 2, this guide plate 5 is connected to the piston rod 7 of the air cylinder 6.
A guide groove hole 8 is provided in this portion, which protrudes in the expansion and contraction direction, and has a straight tip end and is curved to one side on the air cylinder side.

Rollers 11 and 12 pivotally mounted on support shafts 9 and 10 are rotatably inserted into the guide slot 8, and the support shafts 9 and 10 are movable on both the upper and lower sides of the guide plate 5. It is pivotally connected to moving plates 13 and 14 which are arranged at the same time, and the supporting shaft 10 on the tip side thereof is ball jointed to the piston rod 7 of the air cylinder 6 via a connector 15.

Further, a support plate 16 is attached to the movable plate 14 on the lower side of the guide plate 8 by the support shafts 9 and 10, and the tip of the support plate 16 is bent downward to fix a holder 17. Suction cups 18 are attached in the vertical direction, and each suction cup 18 is connected to a vacuum pump (not shown).

Reference numeral 19 denotes a frame of a transport mechanism for the packaging bag m, 20 a belt for transporting the packaging bag, and 21 a restraining plate provided on the surface directly facing the suction cup 18. The first packaging bag is stopped by a restraining plate 21 so as to directly face the suction cup 18.

In addition, 22 is a bucket for storing the packaging bag m;
3 is a transfer chain that moves intermittently, and the stopping position of the bucket belt 22 is on the opposite side of the curved part 8b of the guide slot 8 and from the extension line a of the reciprocating movement of the piston rod 7, as shown in FIG. It is set a little far away.

This device, when the lifting rod 3 is in the raised position,
The air cylinder 6 is pushed out, the piston rod 7 is extended, the two rollers 11 and 12 enter the straight part 8a of the guide slot 8, the support plate 16 moves forward, and the suction cup 18 at the tip is facing directly. It adsorbs the packaging bag m. Then, the air cylinder 6 changes to the retracting operation and the piston rod 7 is indexed, so that the two rollers 11 and 12 roll within the guide slot 8 and enter the curved portion 8b.

Therefore, the support plate 16 attached to the movable plate 14 moves backward and rotates as shown by the arrow A in FIG. Move up to b.

In this state, the lift rod 3 is lowered, so that the base plate 4, the guide plate 5, the support plate 16, and the suction cup 18 are in the first position.
As shown by the dashed line in the figure, they are lowered together, and the packaging bag m is inserted into the bucket 22 at a diagonal position. Thereafter, the suction cups 18 stop suction, leaving the packaging bag m inside the bucket 22, and the lifting rod 3 rises, and the above operation is repeated thereafter.

〔effect〕

As mentioned above, according to the present invention, two rollers are rotatably inserted into the guide slots of the guide plate that moves up and down by the lifting rod, and the supporting shafts are attached to the lower movable plate which is pivoted. A support plate is attached, a plurality of suction cups are provided on the holder at the tip, the stop position of the bucket that is intermittently transferred is set on the opposite side of the curved part of the guide slot, and the support shaft is reciprocated by an air cylinder. The suction cup that moves forward and suctions the packaging bag moves backward and rotates on top of the bucket, positions the packaging bag on the diagonal line, and then descends, so the packaging bag does not hit the edge of the opening of the bucket, but instead stays on the diagonal line. It is inserted inside and has the effect of ensuring the supply of packaging bags.

[Brief explanation of drawings]

FIG. 1 is a partially sectional front view of the device of the present invention, FIG. 2 is a plan view of the main parts, and FIG. 3 is a plan view of the device in an operating state. 3... Lifting rod, 5... Guide plate, 6... Air cylinder, 7... Piston rod, 8... Guide slot, 8a... Straight section, 8b... Curved section, 9, 1
0... Support shaft, 11, 12... Roller, 13, 14
...Moving plate, 16... Support plate, 17... Holder, 18... Suction cup, 22... Bucket, m... Packaging bag.

Claims (1)

[Scope of utility model registration request] An air cylinder is attached horizontally to the top of a lifting rod that moves up and down, and a guide plate that protrudes in the operating direction and has a straight section on the tip side and a guide slot curved on one side on the air cylinder side is fixed horizontally. The spindles of the two rollers inserted into the guide slots so as to be able to roll freely are pivotally connected to movable plates arranged on both the upper and lower surfaces of the guide plate, and one spindle is connected to the piston rod from the air cylinder. A holder having a plurality of suction cups is fixed to the tip of a support plate which is rotatably connected to the tip and attached to the lower movable plate, and the stop position of the bucket which is intermittently transferred at the bottom of the support plate is guided by the support plate. A suction cup is provided on the opposite side of the curved part of the slot, and when the elevating rod is raised, a suction cup is moved forward by the pushing operation of the air cylinder to adsorb the packaging bag,
The retracting action of the cylinder causes the suction cup to retreat and rotate above the bucket, positioning the packaging bag on the diagonal line thereof, and then the elevating rod descends, and after the suction cup stops suctioning, the suction cup returns and rises. Packaging bag feeding device.