JPH0734896Y2 - Conveyor tray guide device in snap fastener attaching device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a snap fastener mounting device, and more specifically, to a conveyor tray mounted on an endless belt rotatably provided along a substantially horizontal surface. A supply device for the synthetic resin bag, an ear cutting device for cutting the ears on both sides of the opening of the bag, a processing device for the upper and lower tongues, and a lower tongue, beside the moving path of the carrying tray. The present invention relates to an improvement of the guide device for the transport tray, which comprises a snap fastener attaching means for the folded-back portion, a snap fastener attaching means for the bag body portion, and a bag take-out means arranged in order.

[Conventional technology]

In the guide device for the transport tray in the snap fastener attaching device of this type, conventionally, the guide rails of the transport tray arranged in parallel with the endless belt-like member are formed in a U-shape or a substantially U-shape with an upward opening. A roller integrally attached to the lower surface of the carrying tray is fitted in the U-shaped or substantially U-shaped groove.

[Problems to be solved by the device]

Since the conventional guide rail is open upward as described above, a cut piece of a synthetic resin bag or a falling hook or the like fits in this groove, and the bottom of the groove is clogged. The movement may be hindered, the rollers may get caught up in this jam, give vibration to the transport tray, or lift it up. As a result, there are drawbacks such that the bag cannot be stably placed on the tray, the placing posture is disturbed, the bag is slid off, and the device is damaged.

Therefore, the present invention has been devised in view of this conventional drawback, and is intended to stably guide the transport tray by adding a device to the guide rail and the roller guided to the guide rail.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, in the transport tray guide device in the snap fastener attaching device of the present invention, the guide rails of the transport trays arranged side by side in an endless belt form have a cross-sectional shape of at least left and right side surfaces. It is formed on an arcuate surface of an outer bulge having the same radius of curvature centered on a uniaxial center, and the tray is provided with rolling wheels for holding the left and right side surfaces of the guide rail from inside and outside. is there.

[Action]

When the carrier tray is guided by the carrier tray guide device configured as described above, the guide rail guides the rolling wheels that sandwich and roll from both left and right sides on the left and right outer surfaces of the guide rail.
The outer surface of this guide rail is formed as an outer bulging arc surface having the same radius of curvature centered on the uniaxial core, so that the rolling wheel can be moved up and down on the outer bulging arc surface. It regulates and moves to guide rolling stably.
Also, since the guide rails act on the left and right outer surfaces so as to guide the rolling wheels, like the conventional rails having a groove, the bag can be cut when the ears of the bag are cut or the hooks are attached. It works to eliminate the accumulation and clogging of cut pieces, chips, and hooks that have fallen off.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a snap fastener attaching device. In the figure, reference numeral 1 is an apparatus main body, and 2 is an air intake device provided upright in the center of the apparatus main body 1. An endless belt-like body (in this embodiment, a chain is used) 3 that is intermittently rotated at a constant pitch along a substantially horizontal surface is provided on the upper surface of the apparatus main body 1. Eight transport trays 4 are mounted on the strip 3 at regular intervals.

A hollow portion 4a is formed in each of the transport trays 4, and the hollow portion 4a is formed.
As shown in FIG. 8, the suction holes 5 are formed on the upper surface of the transport tray 4 and are opened on the front side and the outer side of the transport tray 4, respectively.
It communicates with a, 5b ...

As shown in FIGS. 1 and 2, an intake box 6 rotatably supported around a vertical axis is provided at the center of the intake device 2. The intake box 6 is connected to a vacuum pump P via a main pipe 7. Eight coiled tubes 8 ... Are connected to the intake box 6, and the lower ends of the coiled tubes 8 are connected to the hollow portions 4a of the transport trays 4. Reference numeral 9 denotes a double shaft that is slidable in the axial direction and has both ends pivotally connected to the intake box 6 and each of the transport trays 4. These double axes 9 ...
Penetrates through the center of the coil of the coiled tube 8 and supports the coiled tube 8 and that conveys the rotation of the transport tray 4 to the intake box 6 (with the movement of the transport tray 4). And the role of rotating the intake box 6 around the longitudinal axis.

On the main body 1 of the apparatus, along the movement path of the transport trays 4, the feeding device A for the synthetic resin bag d and the ears e, e on both sides are cut into the opening of the synthetic resin bag d supplied. The ear cutting device B, the device C that folds the upper tongue piece f into the inside of the opening, and the tip edge of the lower tongue piece g is folded back and two male or female snap fasteners a are attached to the folded back portion. Two fasteners corresponding to the snap fastener a are provided in a double portion of the first fastener attaching means D for attaching the ..., the tongue piece f folded inside the opening, and the bag body portion facing the tongue piece. The second fastener attaching means E for attaching the snap fastener b, the attachment state detecting means F for the snap fasteners a, ..., B, and the snap fasteners a ,.
The take-out means G for taking out the packaging bag to which the ... Is attached from the carrying tray 4 to the outside of the apparatus is arranged in this order at predetermined intervals in the moving direction of the carrying tray 4.

The guide rail 10 employs a pipe having a circular cross section, and is provided on the apparatus main body 1 so as to surround the outside of the endless belt-like body 3 at a predetermined interval under the movement path of the transport trays 4 ... ing. It is desirable that the carrying tray support point of the guide rail 10 is outside the center of gravity of the carrying tray 4,
The illustrated examples show this case. Needless to say, the left and right outer side surfaces 10A and 10B of the guide rail are arcuate surfaces having the same curvature centered on the axis of the circular pipe. Numerals 11 ... are supporting legs for supporting this guide rail, and are supported from below at predetermined intervals as shown in the figure.

This guide rail 10 can adopt not only a circular pipe but also an oval cross-section. In short, the cross-sectional shape is such that at least the left and right side surfaces 10A, 10B have the same radius of curvature centered on a uniaxial core. Whatever is formed on the arcuate surface of the bulge can be adopted.

Further, as shown in FIGS. 4 and 5, on the lower surface of the transport tray 4, there are two inner wheels and one outer wheel 12 ... It is rotatably installed. Contact surface of these rolling wheels 12, ..., 13 with the guide rail 4.
12A ..., 13A are formed as concave arc surfaces having substantially the same curvature as the outer surfaces 10A, 10B of the rail 4. Therefore, these wheels
There is no risk of 12 and 13 moving up and down together carelessly, and stable guidance is provided. In addition, the inner wheels 12 have guide rails at their free ends.
It can be moved closer to and away from 10 and the guide rail is always on the free end side.
It is held by rocking arms 15, which are configured to be elastically biased by a spring 14 to the side.

Incidentally, as shown in FIG. 6, it is also possible to adopt a structure in which two pairs are provided for each of the inner and outer wheels, but in this case, the inner rails 12 of the guide rails 12 ...
If the outer one 13 is a tension spring 17 and is configured to be elastically biased to both the left and right outer surfaces 10A and 10B of the guide rail 10 at all times, the transport tray can be made more stable. I can guide you.

Further, in FIG. 4, reference numeral 18 denotes a connection structure between the endless belt-shaped body 3 and the transport tray when the transport tray 4 is tilted to the left or the right. For example, when a bag is supplied to the transport tray,
Further, when the bag after the snap fastener is attached is taken out from the carrying tray, it can be adopted when the bag is fed or taken out more efficiently by inclining the carrying tray. A guide member 20 attached to the body 3 and provided on the outer surface with a dovetail groove 10 of a partial arc centered on the axis of the guide rail 10, and a guide member 20 attached to the lower surface of the transport tray and fitted into the dovetail groove 19. A slide member (21) that slides up and down and that is also a partial arc centered on the axis of the guide rail (10) is formed.

Further, although a concrete structure for controlling the inclination is not shown, it is possible to adopt a configuration in which a cam member is provided between the endless belt and the guide rail in parallel with the endless belt at a predetermined interval.
In order to incline to the left (inside) in FIG. 4, if the height of the cam member is made low, the inside weight (left side) can be lowered around the axis of the guide rail by the weight of the transport tray as described above. (That is, always load it to the left and hold it on the guide rail.) Conversely, to tilt it to the outside (right), if the height of the cam member is high, the left side of the transport tray rides on it. The outside (right side) can be lowered around the axis of the guide rail.

Further, in the case of bag supply, in the example shown in the figure, a preformed bag-like product is supplied onto the carrying tray. However, if necessary, the supply device A may be replaced by a continuous bag manufacturing device, For example, although not shown, a device for continuously producing a bag from a sheet-shaped synthetic resin film wound around a delivery roller, or a tubular long sheet is fed out at a predetermined length in the axial direction, It is possible to set an apparatus, etc. that continuously manufactures bags by fusing and cutting two sheet parts that are laminated by heat in a direction perpendicular to the axis for each predetermined dimension. Can be improved.

According to the above configuration, the uppermost bag of the laminated synthetic resin bags d ... Is separated from the second-stage bag in the supply device A, and is transferred and supplied onto the transport tray 4 temporarily stopped at a predetermined position. .

When the bag d is placed on the transport tray 4, the endless belt 3 is intermittently rotated, and once moved to the ear cutting device B after passing through the stop position, as shown in FIG. Then, the ears e, e are excised.

Since the bag d placed on the carrying tray 4 is adsorbed by the intake holes 5a on the front side in the moving direction of the carrying tray 4 and the intake holes 5b on the outside, the bag d is rolled up or displaced due to wind pressure during movement. It will be transferred without any trouble.

Hereinafter, with the intermittent rotation of the endless belt-shaped body 3, as shown in FIG. 7, the upper tongue piece f is folded inside the opening,
Folding of the tip edge of the lower tongue piece g, attachment of snap fasteners a, attachment of snap fasteners b, determination of attachment state of snap fasteners a, b, removal of good and defective products to two positions Is done.

The illustrated snap fasteners a ..., B ... are all made of synthetic resin and have a known structure. As shown in FIG. 7, the male and female fitting members a ', b' It is composed of rivet members a "and b" for crimping the fitting members a 'and b'.

[Effect of device]

Since the present invention is configured as described above, it has the following effects.

The guide rail has a cross-sectional shape, and at least both left and right side surfaces are formed into an arcuate surface of an outer bulge having the same radius of curvature centered on a uniaxial core, and the tray has the right and left side surfaces of the guide rail. By providing a rolling wheel that is sandwiched from inside and outside, it is possible to eliminate the accumulation and clogging of cut pieces and chips of the bag, or hooks that have fallen when the hooks that cut the ears of the bag are attached to the guide rails. You can
The carrier tray can be guided stably.

Moreover, since the vertical movement of the roller wheels is restricted by the left and right arcuate surfaces of the guide rail, the transport tray can be guided with less vertical rattling.

Therefore, the bag can be stably placed on the tray, and it is possible to eliminate the disadvantages of the prior art such as disturbing the placement posture, slipping off, and damage to the device.

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is an overall perspective view of a snap fastener attaching device, FIG. 2 is a sectional view of an essential part, and FIG. 3 is a movement path of a transport tray and an intermittent stop position. FIG. 4 is a schematic plan view for explaining, FIG. 4 is an enlarged front view of a main part of the transport tray guide device, FIG. 5 is its plan view, FIG. 6 is a plan view of another embodiment, and FIG. 7 is a snap fastener attaching device. It is a whole action explanatory drawing. 3 ... Endless band, 4 ... Transport tray, 10 ... Guide rail, 10A,
10B: left and right outer surface of guide rail, 12,13 ... rolling wheels, 12A, 13A
… The contact surface of the wheels.

Claims (1)

[Scope of utility model registration request] 1. A conveyor tray is mounted on an endless belt rotatably provided along a substantially horizontal surface, and a synthetic resin bag supply device and an opening of the bag are provided beside a movement path of the conveyor tray. Cutting device for cutting the ears on both sides of the tongue, a processing device for the upper and lower tongues, a snap fastener attaching means for the folded portion of the lower tongue, a snap fastener attaching means for the bag body, and a take-out means In the snap fastener attaching device, the guide rails of the transport tray arranged side by side in the endless belt have the same radius of curvature with at least left and right side surfaces centering on a uniaxial core. The snap-fastener is characterized in that it is formed on an arcuate surface of an outer bulge provided with, and that the tray is provided with rolling wheels for holding the left and right side surfaces of the guide rail from inside and outside. Carrier tray guide device in over the mounting device.