JPS6037283Y2 - Circular container feeding device - Google Patents

Description

[Detailed Description of the Invention] Field of Application of the Invention The present invention relates to a circular container feeding device for rapidly and reliably feeding circular containers having a flange to an automatic packaging machine for food products, etc.

Background of the invention Automatic packaging machines for foods, etc. have recently become faster, and machines with a packaging capacity of more than 500 bags per hour have been developed.

By the way, various container supply devices have been proposed for such automatic packaging machines, which supply containers of various shapes having a flange as shown in FIG.

FIG. 1 shows such a container feeding device installed in an automatic packaging machine, where ``earth'' is the automatic packaging machine, ``the container feeder'' is the container feeding device, and ``l'' is the container stack.

The automatic packaging machine 1 includes a chain conveyor 5 for conveying containers 7 to a filling machine, a container lid sealing machine, etc., and container receiving frames 6 are attached to the chain conveyor at a constant pitch.

In the container feeding equipment industry, when the container receiving frame 6 that is installed on the machine frame 4 of the automatic packaging machine 1 and is continuously conveyed is located directly above the conveyance path of the chain conveyor 5 and is conveyed to the lower position,
It is configured to separate a single container 7 from the container stack 3 being held and supply it to the container receiving frame 6.

Here, the stacked weight of containers refers to the whole of a large number of containers 7 having flanges 8 stacked one on top of the other with a constant spacing t between the flanges, as shown in FIG.

The container feeding device 2 includes an underframe 9 for mounting on the machine frame 4 of the automatic packaging machine 1, and a guide frame 10 for holding and guiding the container stack 1 is fixedly provided on the underframe 9. There is.

This guide frame 10 is composed of four angle members that vertically guide the four corner parts of the stacked weight of containers.

Below the guide frame 10, a pair of roll shafts 11.11 are arranged facing each other in the same horizontal plane, and the distance between these roll shafts 11.11 is slightly shorter than the width of the flange 8 of the container 7. <, Therefore, the opposing roll shafts 11.
The inner circumferential surface portion of the container stack 11 comes into contact with the lower surface of the flange 8 of the container 7 located at the lowest position of the container stack 1 to support the container stack 1.

The pair of roll shafts 11.11 are each formed with notched grooves 12 having a required width and depth on their outer circumferential surfaces in a symmetrical position in the generatrix direction.
As shown in the figure, it is configured to be synchronously rotated in directions facing each other by a drive mechanism including a motor 13, a transmission chain 14, a sprocket 15, an electromagnetic clutch 16, and interlocking gears 20□ to 204 mounted on an underframe 9. has been done.

In order to control the operation of the electromagnetic clutch 16, a cam roller 17 fixed to one of the roll shafts 11 is provided.
An actuation lever 18 operatively engaged with the actuation lever 18 and a limit switch 19 operated by the actuation lever 18 are provided.

Before starting rotation, the notch groove 12 of each roll shaft 11 is
in the upward position as shown, both roll axes 11.1
1 return to the original position after completing one rotation inwardly from each other.

In the upward position of the notches 112, 12 the container stack 3
are supported by the opposing inner circumferential surfaces of both roll shafts 11.11 as described above, but as the roll shafts 11.11 rotate, the supporting flanges 8, 8 move into the notched grooves 12, 12. , and then the fitted flanges 8, 8 are forcibly released downward.

The flange 8° 8 of this ash removal container 7 is supported on the peripheral surface of the roll shaft 11.11, so that the one container 7 at the lowest position is removed from the container stack 3 with respect to one rotation of the roll shaft. It will be separated and released and supplied downward.

This container feeding device is operated in synchronization with the operation on the automatic packaging machine.

That is, when the container receiving frames 6 attached to the chain conveyor 5 at a constant pitch arrive under the container feeding device, the electromagnetic clutch 16 provided coaxially with the roll shaft 11 is activated based on an input signal at the same timing. The sprocket 15 is activated and continuously driven by the motor 13 via the transmission chain 714, and the drive connection waist interlocking gear 20. ~20
4 drive the two roll shafts 11.11 synchronously inwardly relative to each other.

At the same time, the cam roller 17 provided coaxially with the roll shaft 11 also rotates, but at the final stage of one rotation, the electromagnetic clutch 16 is deactivated by the action of the operating lever 18 that engages the cam roller 17 and the limit switch 19. The drive connection with the tightening sprocket 15 is cut off and the roll shaft 11
．． Stop 11.

Thus, when the container receiving frame 6 reaches the position below the container feeding device 2, the roll shafts 11.11 synchronously rotate one revolution and then stop.

When the pair of roll shafts 11.11 rotate once in synchronization,
As shown in FIGS. 5a, b, and c, the flanges 8, 8 of the lowest containers in the container stack 1 are fitted into the notch grooves 12, 12, and the flanges of the containers above are connected to the roll shaft. 11.11
This ensures that only the lowest container is separated from the container stack 3, and that a plurality of containers are not erroneously fed and delivered at the same time.

By the way, when a circular container is fed in such a container feeding device, as shown in FIG. Since the containers are supported by the shafts 11, 11, when they fall, they may fall in an unstable position onto the container receiving frame 6 of the automatic packaging machine 1, or may fall upside down.

Purpose of the invention The present invention was made to solve these problems, and its purpose is to provide a circular container feeding device that can stably feed circular containers to an automatic packaging machine. It is.

Summary of the invention The gist for achieving the purpose of the invention is to convert a stack of circular containers in which the circular flanges are stacked at regular intervals to the circular flanges of the lowest circular containers. A circular flange of a circular container is provided with a pair of roll shafts disposed so as to abut and support the lower surface and rotate in directions facing each other, and a circular flange of a circular container is supported in a part of the circumferential surface of each roll shaft in the generatrix direction. A notch groove that can be fitted and connected is formed symmetrically, and the circular container is separated from the stack of circular containers and sent downward by the engagement of the circular container flange with the notch groove as the roll shaft rotates. In the circular container feeding device, the pair of roll shafts are formed in a stepped shape having a constricted portion having a depth equal to or greater than the depth of the notch groove in the drawing of the longitudinal center portion in the axial direction, and the opposite stepped portions are formed in a stepped shape. The circular container feeding device is characterized in that it is configured to abut at four locations on the lower surface of the circular flange.

Embodiments of the invention The present invention will be explained in detail below based on the embodiments shown in the drawings, but the illustrations of parts having the same structure as the feeding device shown in the conventional example will be omitted, and only the characteristic parts of the invention will be illustrated. .

FIG. 8 is a plan view showing an embodiment of the circular container feeding device according to the present invention.

This circular container supply device includes a pair of roll shafts 11 disposed facing each other in the same horizontal plane below a guide framework 10 that holds and guides a stack of circular containers 3 in the vertical direction.
11 is formed into a stepped shape with a constricted central portion in the axial direction, as shown in the figure.

This constricted portion is formed to have a depth greater than the depth of a notch groove to be described later.

Then, the distance between the two roll shafts 11 and 11 is set to be slightly shorter than the outer diameter of the circular flange 8 of the circular container 7, as shown in the figure.
Therefore, the pair of opposing crotch portions formed on the pair of opposing roll shafts 11.11, respectively, abut against the lower surface of the circular collar 8 of the circular container 7 located at the lowest position in the weight of the stacked circular containers, thereby lifting the stacked circular containers l. It will be paid and paid.

The pair of roll shafts 11.11 have notched grooves 12 of a required width and depth formed in the generatrix direction on their outer peripheral surfaces in symmetrical positions, and are synchronously rotated in directions facing each other by a drive mechanism (not shown). configured to be driven.

Before starting rotation, the notch groove 12 of each roll shaft 11 is
in the upward position as shown, with both roll axes 11.11
When they complete one rotation inwardly, they return to their original positions.

In the upward position of the cutout groove 12.12, the circular container stack 3 is supported by the inner circumferential surface of each facing step of both roll shafts 11.11, as described above;
With the rotation of 1.11, the supported circular flange 8 is fitted into each notch groove 12, and then the fitted circular flange 8 is forcibly released downward.

At this time, the circular container 7 is discharged downward while its circular flange 8 is supported in two places by one roll shaft 11, a total of four places, so that it is fed to the automatic packaging machine in a stable posture. Become.

Further, the circular flange 8 of the next circular container 7 is the roll shaft 11.11.
Since the circular container 7 is supported by the circumferential surface of each step, only the lowest circular container 7 is separated from the stack of circular containers 3 and is discharged and supplied downward.

In the illustrated embodiment, one container can be discharged and supplied per one rotation of the roll shaft.
If a plurality of notched grooves are formed on the circumferential surface of the roll shaft as shown in FIG. 1, the same number of containers as there are notched grooves can be fed per one rotation of the roll shaft, making it easy to speed up container feeding.

Furthermore, if a plurality of notched grooves are provided and the intervals in the circumferential direction are changed, containers can be fed at a varying feeding pitch while maintaining constant rotation.

Furthermore, as shown in FIGS. 9(a) and 9(c), a notch 12' may be formed in the direction of the generatrix of the circumferential surface of the roll shaft 11 instead of the notch groove 12, in short, the lowest circular container flange may be formed in the notch. Even when the container is inserted, the circular container flange above the container may be supported by the circumferential surface of the roll shaft, and the various modifications shown in FIG. 9 are all within the scope of the present invention. It is.

Effects of the Invention As is clear from the above explanation, the container feeding device of the present invention uses a plurality of symmetrically arranged stepped roll shafts with notched grooves to feed a stack of containers to the lower surface of the circular container flange at the lowest position. Although it has an extremely simple structure in which the rolls are supported at four locations and the roll shafts are rotated inwardly in synchronization with each other, the feeding operation of circular containers is reliable and automatic packaging is possible without any trouble. Since it can fully cope with higher speed machines, it can be said to be extremely superior in terms of performance compared to conventional devices of this type.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of an automatic packaging machine equipped with a conventional container feeding device, Fig. 2 is a partially cutaway external perspective view of Fig. 1, and Fig. 3 is a schematic side view of an automatic packaging machine equipped with a conventional container feeding device.
The figure is a front view of FIG. 2, FIG. 4 is a side view of the same showing the supporting state of the container stack, FIGS. The figures are plan views of different types of containers, FIG. 7 is a plan view showing a state in which circular containers are fed by a conventional container feeding device, and FIG. 8 is a partially omitted plan view of the circular container feeding device according to the present invention. Figure 9a. FIGS. 7b and 7c are side views showing modified examples of the roll shaft, respectively. 1...Automatic packaging machine, 2...Container feeding device, 3...Container stack, 4...Machine frame, 5... Chain conveyor, 6... Container receiving frame, 7... Container, 8... Flange, 9.
...Underframe, 10...Guidance frame, 11,1
1', 11''...Roll axis, 12...
Notch groove, 13...Motor, 14...Transmission chain, 15...Sprocket, 16...
...Electromagnetic clutch, 17...Cam roller,
18...Operating lever, 19...Limit switch, 20□~20.・・・・・・Interlocking gears.

Claims (1)

[Scope of utility model registration request] A pair of circular flanges arranged so that the circular flanges contact and support the lower surface of the circular flanges of the lowest circular container, and rotate in directions facing each other, for a stack of circular containers stacked at regular intervals. A notched groove is symmetrically formed in a part of the circumferential surface of each of these roll shafts in the direction of the generatrix, into which the circular flange of the circular container to be supported can fit and engage. A circular container feeding device is configured to separate a circular container from a stack of circular containers and feed it downward by engagement between a circular container flange and the notch groove, wherein the pair of roll shafts are axially longitudinal. It is characterized by being formed into a stepped shape having a constricted portion having a depth equal to or greater than the depth of the notch groove on the circumferential surface of the central portion, and configured such that the opposing stepped portions abut at four locations on the lower surface of the circular flange. A circular container feeding device.