JPS6254690B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention involves twisting and tying the bag opening with a ribbon-like binding string in which a core material such as a metal wire is embedded, and also interposing a tag to tie the bag at the same time. The present invention relates to a bag opening tying device that is integrally tied to the rim of a bag.

<Prior Art> Conventionally, products such as bread and confectionery are placed in plastic bags, and ribbon-shaped binding strings (hereinafter simply referred to as binding strings) with a thin metal wire embedded in the center have been used to close the bag openings. ) have been developed to twist and tie bag openings together. In the case of these binding devices, basically the U
It uses a method of twisting binding cords bent into a letter shape. However, since the conventional device uses a rotating claw to scoop up the end of the U-shaped string and simply ties it up as it rotates, a twisted portion is formed up to the tied end of the string. Therefore, when a purchaser of this bagged product opens the bag, the twisted part is formed over the entire length of the string, so it is troublesome to untwist it, and the cut surface of the end of the string is Not only is it unpopular because it can cause people to cut their fingers, but this way of twisting is also unsightly and reduces the value of the product.

There are also known devices that bind price tags and other tags at the same time when the bag opening is bound (for example,
(Special Publication No. 41-8517, Special Publication No. 44-18480), these devices have a structure in which a binding string is inserted into the tag attachment hole and then twisted together with the bag opening. It is not widely used because the operation of threading the string through the mounting hole is troublesome and can easily lead to malfunction.

<Problems to be Solved by the Invention> In view of the above-mentioned circumstances, the present invention has been developed by twisting only the portion near the bag mouth edge of the binding string that is stretched around the bag mouth in a U-shape.
To provide a binding device in which both end portions are opened in a V-shape without twisting, and the tag is interposed between the twisted portions and bound together with the bag opening, thereby preventing the tag from falling out.

<Means for solving the problems> That is, one of the present invention is to provide a bag opening guide belt on one side of the conveyor that guides the bag opening while pinching it,
a rotatable receiving piece attached to a constantly rotating conveyance chain and facing the feeding end of the bag opening guide belt;
A binding string feeding means is disposed above the feeding end, and a pressing rod is disposed that is movable in parallel with the guide belt and pushes the bag opening together with the binding string into the U-shaped groove of the receiving piece while gearing. A hooker is provided above the conveyance path of the receiving piece and moves parallel to the conveyance path, and the binding string is twisted several times while being pinched by a hook arm provided at the lower end of the hooker, and the hook is moved upward. Another aspect of the present invention is a binding device that releases and discharges a bag opening by retreating and lateral escape of a received piece. This binding device is equipped with a suction nozzle at the lower center that sucks and holds tags one by one, sets the tags on the bag opening, and ties them integrally to the bag opening by twisting the binding string.

<Example> Hereinafter, the present invention will be described with reference to drawings of an example.

1 is a conveyor configured so that the conveying path 1a surface can be tilted freely by a ring mechanism 2 arranged at the bottom of the machine body.
On one side of the conveyance path 1a of the conveyor 1, a pair of upper and lower bag opening guide belts 4, 4' are provided, which are stretched over pulleys 3, 3 disposed in the front and rear, so that the upper and lower belt surfaces are in sliding contact with each other. The bag opening guide belts 4, 4' are stretched around pulleys 3, 3 in two parallel rows with a predetermined width between them (see FIG. 5). 5 indicates two parallel bag opening guide belts 4, 4.
An L-shaped pressing rod is installed between the upper guide belts 4', 4', and the upper end of the pressing rod 5 is pivotally connected at a pivot point 7a to a sliding part 6 that is movable in the front and back direction. It is attached to one end of a hook-shaped lever 7, and the other end of the lever 7 is connected to a rod 8a of a cylinder 8. Reference numeral 9 denotes a receiving piece having a U-shaped groove facing sideways in front of the feeding end 4a of the bag opening guide belt 4, and the receiving piece 9 is an endless conveying chain that constantly rotates. The conveyor chain 10 is attached to a support plate 11 fixed to the conveyor chain 10 by a support pin 12, and is configured to fall sideways about the support pin 12 due to an external element during rotation of the conveyance chain 10. Reference numeral 13 denotes a binding cord feeding means provided close to the feeding end 4a of the bag opening guide belt 4, and the binding cord feeding means 13 is fed out from a take-up reel 14 attached to the upper part of the machine body. The binding cord 15 is cut to a certain length suitable for binding by a cutter mechanism 16, and is supplied hanging to the front surface of the receiving piece 9.

Further, at a position directly below the binding cord feeding means 13,
A V-shaped receiving groove 18 for receiving and gripping the cut binding cord 15 is attached with a relief piece 17. Reference numeral 19 denotes a hooker that moves parallel to the conveyance path 10a, in which the receiving pieces 9 are moved parallel to each other with the U-shaped groove 9a facing upward. A suction nozzle 23 for tag adsorption is attached to the center of a pair of hook arms 22 arranged at the lower end of a cylinder 21, which is the base axis of the hooker 19.
is provided. Reference numeral 24 indicates a tag supply means, which includes a tag reel 25 installed at the outer end of the side of the aircraft.
The tag 26 pulled out is printed appropriately by the printer 27, and is passed through the cutter 28 to be cut into individual tags 26. At the standby position of the hooker 19, the tags 26 are sucked into the suction nozzle 23 at the tip (second (See Figures 3 and 6).

Next, to explain the function of this binding device, first, the bags 29 filled with products such as bread and confectionery are placed on the upper surface of the conveyor 1 by an appropriate supply means ( (not shown). Note that the conveyance path 1a surface of the conveyor 1 is
Depending on the thickness of the bag body 29 due to the amount of stuffing, the bag opening 2a may be tilted somewhat to make it easier to protrude to the back side of the conveyance path 1a. For example, by turning the handle 30 at the bottom of the machine, the feed shaft 31 is rotated, and the link mechanism 2
A pair of bag opening guide belts 4 which are movable and have a bag opening part 29a arranged on the side so that the conveying path 1a is flat or inclined.
Arrange to arrive in time.

Here, the bag mouth part 29a of the bag body 29 being transferred by the conveyor 1 enters the V-shaped guide port 32 formed by the pair of guide plates 33, 33 disposed above and below, and moves at the same speed as the conveyor 1. While being smoothly held between a pair of bag opening guide belts 4 and 4' rotating at The rod 8a of the cylinder 8 is activated, and the hook-shaped lever 7 rotates around the pivot point 7a. Upper and lower bag opening guide belts 4, 4'
The rod 8a of the cylinder 8 is further extended in this state, so that the rod 8a is placed at the feeding end 4a and is fed horizontally. The rear end of the bag opening 29a is pressed by the tip of the pressing rod 5. In this case, the bag opening 29
Since the tip of a is negotiated with the U-shaped groove 9a of the receiving piece 9, the bag opening 29a is pressed into the U-shaped groove 9 by the pressing rod 5.
a, and inevitably the gear ring 29a
will be done. Of course, when the bag opening 29a reaches the receiving piece 9, each binding string 15, which has been cut to a certain size by the upper cutter mechanism 16, is vertically set on the upper surface of the U-shaped groove 9a. Because
The tip of the bag opening portion 29a presses the approximately central portion of the binding string 15 and is pushed into the U-shaped groove 9a of the receiving piece 9 together. Incidentally, when the binding cord 15 is bent and pushed into the U-shaped groove 9a, the cylinder 34 disposed below the body is activated, and the cylinder 34
The escape piece 17 connected to the rod 34a is rotated to release the V-shaped receiving groove 18, so that the binding cord 15 is smoothly bent into a U-shape.

Further, the pressing rod 5 pushes the geared bag opening 29a into the U-shaped groove 9a of the receiving piece 9, and at the same time, the receiving piece 9 is pressed by the tip of the pressing rod 5, so that the receiving piece 9 is laid down horizontally with the support pin 36 implanted in the support plate 11 as a base point, with the U-shaped groove 9a facing upward. 37 is the receiving piece 9 and the support plate 11
This is a tension spring stretched between the two.

The receiving piece 9, which has been laid down on its side with the U-shaped groove 9a facing upward, is transported as the transport chain 20 rotates, with the U-shaped binding string 15 and the bag opening 29a stuffed together. In the process of facing the conveyance path 10a,
A fixed guide rod 35 installed parallel to the upper part of the bag 0a fits into a guide groove 9b attached to the front of the receiving piece 9, and the bag opening is packed into the U-shaped groove 9a of the receiving piece 9. It slides on the upper part of the bag opening 29a to prevent the bag opening 29a from returning and expanding and contracting due to the reaction of the gearing (see FIG. 9).

In this way, when the receiving piece 9 whose upper surface is closed by the fixed guide rod 35 comes to the standby position of the hooker 19, which is removed from the fixed guide rod 35, the cylinder 21 of the hooker 19 is pressurized. The hook arm 22 is lowered, and the hook arm 22 faces both ends 15a, 15a of the U-shaped binding string 15 that can protrude from inside the receiving piece 9, and the cylinder 21 is actuated to close the hook arm 22. Both ends 15a, 15a of the binding string are held between the center suction nozzle 23 and the die surface 23. At this time, the pinion 39, which is the rotation means of the hooker 19, which moves as the conveyance chain 20 rotates, meshes with the guide rack 40 fixed to the machine frame, so that the rotation of the pinion 39 is transmitted through the shaft 41 and the transmission gear 42 to the hooker body. 19', and the hook arm 22 at the lower end of the hooker body 19' rotates as a unit, so that both ends 15a, 1 of the binding string
5a is twisted and the bag opening 29a is tied.

Further, when the hooker 19 is lowered, the tag supplying means 24 arranged in advance on the side slides each tag 26 cut by the cutter 28, and the tag 26 is cut by the cutter 28.
6 facing the lower surface of the suction nozzle 23 at the center of the hooker 19, the tag 26 is held by suction nozzle 23 and moved to the bag opening 29a as the hooker 19 descends, and the suction is released. Since the tag 26 is placed on the gearing surface 29a', when the hook arm 22 twists both ends 15a, 15a of the binding string, the tag 26 is twisted and attached together with the bag opening 29a. However, as shown in FIG. 16, it is preferable that the tags 26 have a constricted part 26a so as not to interfere with the twisting of the binding string 15 and to prevent them from coming off after binding. It is cut at a position a closer to the tip than the center of the constricted portion 26a.

After that, the hooker 19 and the receiving piece 9 are moved to the end 10 of the conveyance path.
When you reach position a (at this time, the footsucker 1
9 has rotated two or three times and has completed two or three twists. ), cylinder 2 of the footcar body 19'
1 is switched to the suction side, and hook arm 2
2 is opened, and the hook arm 22 itself is retreated (raised). In addition, on the receiving piece 9 side, as shown in FIGS. 9 and 10, the position regulating piece 43 of the support plate 11 that supports the receiving piece 9 rides on the sliding fixed cam 44, and the supporting plate 11
In order to slide the support plate 1 laterally (to the opposite side of the bag body 29) against the spring 45,
1, the bag opening 29a of the bag body 29 twisted with the binding string 15 is removed from the U-shaped groove 9a of the receiving piece 9, and the bag opening 29a is removed from the conveying path end 10.
It is discharged from a′. After the tied bag opening part 29a is discharged, the position regulating piece 43 of the receiving piece 9 is fixed to the fixed cam 4.
4, the spring 45 returns to the original protruding position.

The operation of the cylinder 21 of the hooker 19 is controlled by a signal groove 48 carved in a guide rail 47 parallel to the conveyor chain 20 into which a sliding portion 46 provided on the back of the hooker 19 is fitted, and a microcontroller provided on the terminal body portion 46. The switch 49 is activated and this signal drives the compressor (not shown),
9 and clamps and opens the foot arm 22. 50 in the figure is the guide rack 40
A clutch mechanism for preventing and braking the shaft 41 of the pinion 39 meshing with the pinion 39; 51 indicates a fixing pin for horizontally tilting the receiving piece 9 protruding from the lower side of the conveyor chain 10; It has the effect of negotiating with the upwardly facing receiving piece 9 and causing it to roll back to its original horizontal position.

<Effects of the Invention> As described above, the bag opening tying device of the present invention includes a receiving piece in which a U-shaped groove is formed at the feeding end of the guide belt that guides the bag opening, which rotates in the conveyance chain; The bag opening has a means for feeding out the binding cord that is cut one by one and stands by at the top of the front of the receiving piece, and a pressing rod that presses the rear end of the bag opening on the guide belt side. While being bent, gearing is ensured in the U-shaped groove of the receiving piece. Moreover, the receiving piece is located on the conveyance path with the U-shaped groove facing upward, and the hook arm of the hooker, which moves parallel to the receiving piece arranged above, pinches only both ends of the binding string that can protrude from the receiving piece. Since it is twisted by the rotation of the contact hook arm, the tie string is only twisted several times near the bag opening, excluding the open end, so the end of the tie string is not twisted and opens in a butterfly shape, so the bag body is not twisted. The bundled packaging looks good, and it is easy to untwist when opening.

Furthermore, since the present invention incorporates a suction nozzle in the center of the hooker, each tag transferred by the tag supply means is sucked and held by the suction nozzle before the binding string is twisted. The tag can be set on the bag opening of the receiving piece, and the tag can be attached to the bag opening by twisting with a tie string. That is, unlike conventional tagging devices, there is no need to insert a binding cord for each tag into the attachment hole of each tag, and the tag device can be simplified.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and Fig. 1 is a side view, Fig. 2 is a plan view, Fig. 3 is a front view, and Fig. 4 is a side view.
The figure is a side view showing the main parts of the bag opening guide belt, Figure 5 is a plan view of the same, Figure 6 is a front view of the hooker, Figure 7 is a side view of the same, Figure 8 is a plan view of the same, and Figure 9 is a front view of the hooker. is a front view of the receiving piece, Fig. 10 is a plan view of the same, Fig. 11 is a side view of the same, Figs. 12 and 13 are explanatory views showing the twisted state of the binding string, Figs. In the example,
An explanatory diagram showing a twisted state of a binding string with a tag interposed therebetween;
FIG. 16 is a perspective view of the tag. DESCRIPTION OF SYMBOLS 1... Conveyor, 2... Link mechanism, 4... Bag opening guide belt, 5... Pressing rod, 7... Hook-shaped lever, 8... Cylinder, 9... Receiving piece, 10... Conveying chain, DESCRIPTION OF SYMBOLS 11... Support plate, 13... Binding string feeding means, 15... Binding string, 19... Hooker, 20... Conveyance chain, 21... Cylinder, 23... Suction nozzle, 24... Tag supplying means, 26 ...Tag, 29...Bag body, 29a...Bag opening.

Claims (1)

[Scope of Claims] 1. A pair of upper and lower bag opening guide belts that are located on the side of the conveyor and transfer the bags by sandwiching the bag openings of the bags placed on the conveyor, and a feeding end of the bag opening guide belts. A rotatable receiving piece attached to the conveyor chain facing the section, a binding string feeding means for supplying the binding string one by one to the U-shaped groove surface of the receiving piece, and a binding string feeding means parallel to the bag opening guide belt. A pressing rod that is movable and pushes the bag opening together with the binding string into the U-shaped groove of the receiving piece while gearing; A bag opening tying device characterized by being equipped with a hooker having a hook arm at the tip that can be twisted. 2. A pair of upper and lower bag opening guide belts located on the side of the conveyor that sandwich and transfer the bag openings of bags placed on the conveyor; A freely rolling receiving piece is attached to the receiving piece, a binding string feeding means that supplies the binding string one by one to the U-shaped groove surface of the receiving piece, and a means for feeding the binding string one by one into the U-shaped groove surface of the receiving piece; A pressing rod that presses the opening of the bag along with the binding string into the shaped groove while gearing, and a hook arm at the tip that moves parallel to the conveyance path and pinches and twists the end of the binding string, which is located above the conveyance path of the receiving piece. The hooker provided and the hooker with 1
A bag opening binding device comprising: a tag supply means for supplying tags cut into pieces, and a suction nozzle at the lower center of the hooker for sucking and holding tags one by one.