JP3639199B2 - Packaging bag feeder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bag feeding device that separates and conveys a plurality of stacked packaging bags one by one.
[0002]
[Prior art]
In a conventional packaging machine, a bag feeding device provided with a bag feeding device for laminating already produced packaging bags and transporting the packaging bags one by one and a holding device for moving the packaging bag to another position There is a device.
As shown in FIG. 1 (front view), FIG. 2 and 3 (plan view), this bag feeding device is conveyed separately by the lower belt 3 and the upper belt 19 having different speeds, When the packaging bag is conveyed to a predetermined position, it is detected by the detector 27, and the packaging bag is held by the packaging machine or the like by the suction tool 40 according to the signal.
[0003]
[Problems to be solved by the invention]
However, the packaging bags discharged from the lower belt 3 and the upper belt 19 may be overlapped and discharged as shown in FIG. In this case, since the detector 27 detects the lower packaging bag 100a, the upper packaging bag 100b is sucked by the suction tool 40 at a position different from the normal and held sideways.
As a result, the packaging machine has a problem that it becomes a defective product, such as a case where a predetermined amount does not enter or a seal position is different.
Further, when the packaging bags discharged from the lower belt 3 and the upper belt 19 are discharged in a state of being overlapped, and sucked with the suction tool 40 and held sideways in this state, a plurality of packagings are used instead of a single packaging bag. The problem of holding the bag sideways arises.
As described above, there are various problems in the bag supply apparatus for packaging bags, and the present invention is to solve such problems.
[0004]
[Means for Solving the Problems]
The bag supply apparatus of claim 1 separates a plurality of stacked packaging bags one by one through an upper belt (19) and a lower belt (3) at different speeds and conveys them to a stop plate (26b). To do.
A rotating roller (58) that can rotate and come into contact with the surface of the packaging bag discharged from the upper belt (19) and the lower belt (3) is provided, and the contact force between both ends of the surface of the packaging bag and the belt. In order to maintain this balance, the rotating roller (58) is provided so as to be able to swing.
This bag supply device for a packaging bag separates the packaging bags one by one and conveys them to the stop plate (26b). In the conveyance process, the contact between both ends of the surface of the packaging bag and the rotating roller (58). In order to maintain the balance of force, the rotating roller (58) is provided so as to be able to swing, so that, for example, even if they overlap without being separated, the two packaging bags are as shown in FIG. And smoothly set at a predetermined position of the stop plate (26b).
That is, since the rotating roller (58) is conveyed while being swingably contacted to both ends of the packaging bag, the overlapping packaging bags are separated in a straight line without being biased one side at a time. Appearance can be avoided.
Further, the bag feeding device according to claim 2 corresponds to both ends of the packaging bag, and the L-shaped front presser body (29b) from the position where each packaging bag is separated toward the stop plate 26b. Since the back pressing body (29a) is provided, it is possible to prevent the end portions of the packaging bag from rolling up.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 (A) showing the entire front, FIG. 1 (B) showing a partial enlargement, FIG. 1 (C) showing another front, and a plane on which some parts are omitted. 2, FIG. 3, FIG. 4 showing the left side of FIG. 3, and FIG. 5 showing the overlapping state of the packaging bags on the conveyor.
[0006]
The conveyor device 1 has four lower belts 3 hung on a front roller 5 and a rear roller (not shown) that rotate via a pulley 2a of a driving device 2, and a stacked packaging bag (not shown) Each sheet is conveyed toward the front roller 5 via a drive roller device 10 described later. A bottom plate 4 is provided from the lower belt 3 to a stop plate 26b and a detection plate 26a described later.
[0007]
The drive roller device 10 will be described. The support rod 11 is supported by support members (not shown) standing on both sides of the conveyor device 1 and rotated by a drive device (not shown) installed on the side of the conveyor device 1. The drive shaft 12 is supported by a support plate 13 suspended from the support rod 11.
A relay shaft 15 is attached to the drive shaft 12 via a support member 14 so as to be swingable downward and a belt 16 is hung on the drive shaft 12 and the relay shaft 15. The relay shaft 15 is rotated.
The relay shaft 15 is attached with a horizontal support 17 that is substantially parallel to the lower belt 3 and that can swing, and a rotatable roller 18 is attached to the roller shaft 20 at the end thereof. . An upper belt 19 is hung on the relay shaft 15 and the roller 18, and the moving upper belt 19 can contact the lower belt 3.
[0008]
On the other hand, a support body 22 is attached to the roller shaft 20 so as to be swingable, and is coupled to a length adjusting body 24 fixed to the support rod 11. That is, the length adjusting body 24 adjusts the height of the position of the roller 18 to adjust the gap between the lower belt 3 and the upper belt 19.
The speed of the lower belt 3 and the upper belt 19 is different, and the speed of the upper belt 19 is increased. Therefore, the laminated packaging bags are separated and conveyed from the surface and are swung. The possible horizontal support 17 makes it possible to cope with the contact situation between the upper belt 19 and the lower belt 3.
[0009]
Further, on both sides of the conveyor device 1, an L-shaped front presser that can swing on a support bar 28 b fixed to the guide body 38 in order to prevent the both ends of the packaging bag being conveyed from rolling up. 29b is provided with an L-shaped rear presser 29a that can swing on the support rod 28a.
In addition, a fixed stop plate 26b and a swingable detection plate 26a that is always urged by a spring are installed at the end of the conveyor device 1. The detection plate 26a can be detected at the center. A detector (limit switch) 27 for detecting the arrival of the packaging bag is provided. When the detector 27 detects the arrival of the packaging bag, the lower belt 3 and the upper belt 19 are stopped, and the control circuit is configured to operate when there is no packaging bag.
[0010]
Further, a guide plate adjusting mechanism 30 is installed at the left end of the conveyor device 1 so as to be compatible with packaging bags of various sizes.
In this guide plate adjusting mechanism 30, a gear 32 is attached to the center of the rotation main shaft 31, and a chain 34 is hung on a gear (not shown) installed on the auxiliary shaft 33. In addition, guide nuts 35a and 35b, which are formed with screws opposite to each other, are screwed onto the rotary main shaft 31, and a guide body 38 is fixed to the guide nuts 35a and 35b.
Therefore, when the handle 36 attached to the auxiliary shaft 33 is rotated, the guide body 38 is widened and narrowed according to the movement of the guide nuts 35a and 35b due to the rotation of the rotation main shaft 31, so that the width of various packaging bags can be accommodated.
[0011]
Next, under normal conditions, the stacked packaging bags are separated and conveyed one by one by the lower belt 3 and the upper belt 19 and detected by the detector 27. In the state shown in FIG. , 100b will be described as to how to be handled when they are transported to the detection plate 26a (stop plate 26b).
[0012]
In addition, when the lower packaging bag 100a arrives first and the detector 27 detects the state shown in FIG. 5, that is, although the upper packaging bag 100a has not arrived at the stop plate 26b, it will be described later. It is sucked by the tool 40, delivered to the suction tool 48, and further delivered to a packaging machine (not shown).
For this reason, in the packaging machine, the position where the packaging bag is sandwiched is different, so that a predetermined amount cannot be stored or the heat seal position is different, resulting in a defective product.
[0013]
Therefore, as a measure for the overlapping packaging bags 100a and 100b, a conveyance assist mechanism 49 for conveying the upper packaging bag 100b to the detection plate 26a (stop plate 26b) is provided.
The conveyance auxiliary mechanism 49 will be described. An auxiliary fixed shaft 50 that rotates via a driving body 51 is provided on the left upper side of the rotation main shaft 31.
A groove 53 is formed in the auxiliary fixed shaft 50, and support members 55 and 55 with an attached balancer 55a are attached via bearings 52 and 52 so as to be swingable back and forth. The bearings 52 and 52 can reciprocate with respect to the auxiliary fixed shaft 50, and the positions of the support bodies 55 and 55 can be adjusted as will be described later.
[0014]
The auxiliary fixed shaft 50 is provided with rotating rollers 59, 59 which are fitted in the groove 53 and can be rotated as the auxiliary fixed shaft 50 rotates.
Rotating rollers 58 and 58 are attached to the front ends of the support bodies 55 and 55, belts 63 and 63 are hung between the rotating rollers 59 and 59, and the rotating rollers 59 and 59 are rotated. Accordingly, the rotating rollers 58 and 58 rotate. The belts 63 and 63 are always in contact with the upper packaging bag 100b, and the degree of contact is kept balanced by the swingable support members 55 and 55 so that the packaging bag 100b is attached to the detection plate 26a (stop plate 26b). ) Side.
Therefore, as shown in FIG. 5 (A), the overlapping packaging bags 100b and 100a are moved to the normal positions by the conveyance assist mechanism 49 as shown in FIG. 5 (B). Set.
[0015]
Further, outside the rotating rollers 59, 59, bearings 62, 62 are fitted to the auxiliary fixed shaft 50, and a binding plate 66 integrated with the bearings 62, 62 is attached. 66 and 66 are connected to the induction nuts 35a and 35b.
Therefore, when the handle 36 is turned, the guide body 38 and the support bodies 55 and 55 (the rotation rollers 59, 59, 58, and 58) are moved by the rotation of the rotation main shaft 31 along with the movement of the guide nuts 35a and 35b. It can correspond to the width of various packaging bags.
[0016]
Next, a holding device that delivers a packaging bag to a packaging machine (not shown) when the packaging bag is detected by the detector 27 will be described.
A suction tool 40 is installed on the conveyor device 1 so that the position of the suction tool 40 can be adjusted via an adjustment rod 45 inserted into the boss 44. The suction tool 40 can swing on a fulcrum shaft 41 via an arm 42. It has become. The arm 42 is coupled to a link (not shown) at a substantially central coupling portion 42a, and ascends after adsorbing the packaging bag 100b.
[0017]
The arm 42 is attached with a vibration device (pneumatic or electric) 60 that generates a slight vibration to prevent suction of two or more packaging bags. That is, the packaging bags conveyed by the lower belt 3 and the upper belt 19 in the stacked state (FIG. 5A) are stacked in two by the transport assist mechanism 49 (see FIG. 5). 5 (B)). In this state, if the packaging bag is adsorbed by the adsorbing tool 40, both of the adhering bags may be adsorbed. Therefore, after the adsorption, the vibration device 60 is operated to prevent the adsorption of the two sheets.
The place where the vibration device 60 is attached is not limited to the arm 42, but may be a position where the suction tool 40 is vibrated.
On the other hand, the packaging bag adsorbed and raised by the adsorbing tool 40 is adsorbed and delivered by the adsorbing tool 48 that is moved up and down by the link mechanism 48a, and delivered to the packaging machine (not shown) through the adsorbing tool 48.
5 shows a state in which the two packaging bags 100a and 100b overlap each other, even if three or more sheets overlap each other, depending on the operation of the conveyance assist mechanism 49 and the timing of the suction tool 40, each of the packaging bags 100a and 100b overlaps. Needless to say, the present invention can be sucked and delivered to the packaging machine, and the present invention is not limited to the above embodiment.
[0018]
【The invention's effect】
In the bag feeding device of claim 1, even if the packaging bags overlap without separating, the rotating roller is conveyed while being swingably contacted with both ends of the surface of the packaging bag. It is possible to avoid the appearance of defective products by separating them in a straight line without being biased to one side.
Moreover, the bag supply apparatus of Claim 2 can prevent the rising of the both ends of a packaging bag by providing an L-shaped front presser body and a rear presser body.
[Brief description of the drawings]
FIG. 1A is an overall front view of a bag feeding device, FIG. 1B is a partially enlarged view, and FIG. 1C is another front view.
FIG. 2 is a diagram showing a plane in which part display of a part of the bag feeder is omitted.
FIG. 3 is a diagram showing a plane in which part display of a part of the bag feeder is omitted.
4 is a diagram showing a left side surface of FIG. 3;
FIG. 5 is a diagram showing an overlapping state of packaging bags on a conveyor.
[Explanation of symbols]
3 Lower belt 10 Drive roller device 19 Upper belt 26a Detection plate 27 Detector 30 Guide plate adjustment mechanism 38 Guide body 40 Adsorption tool 49 Transport assist mechanism 52 Bearing 55 Support body 58 Rotation roller 59 Rotation roller 60 Vibration device

Claims (2)

A plurality of stacked packaging bags are separated one by one through an upper belt and a lower belt at different speeds, and conveyed to a stop plate via a rotating roller that rotates so as to be in contact with the surface of the separated packaging bags. In a bag supply device for packaging bags,
A bag supply device for a packaging bag, wherein the rotation roller is swingably provided in order to maintain the balance of the contact force between both ends of the surface of the packaging bag and the rotation roller.   The packaging according to claim 1, wherein an L-shaped front presser body and a rear presser body are provided toward the stop plate from a position where each packaging bag is separated, corresponding to both ends of the packaging bag. Bag feeding device.

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