JPH10114306A - Automatic rubber band strapping machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent two or more of rubber bands from entering an inlet of a guide nozzle in an overlapped state by forming a stepped part on a discharging slant face at the downstream side of a rubber band discharging passage of a rubber band feeder, in an automatic rubber band stretching machine which stretches a rubber band over a container and the like for compressed sushi (a kind of sushi made by compressing vinegared fish and rice). SOLUTION: A rubber band feeder 10 for feeding rubber bands to a rubber band strapping device for strapping rubber bands on a container to be conveyed on a conveyor comprises a cylindrical feeder body 11 having a vibrator, a rubber band feeding section 12 for feeding rubber bands to the feeder body 10 from the upper part, and a guide nozzle 14 for guiding the rubber bands to be discharged from a rubber band discharging passage 13 on the feeder body 10 to the rubber band strapping device. A helical guide passage 16 for connecting a bottom 15 on the inside of the side wall of the feeder body 10 and the rubber band discharging passage 13 is formed on a slant face. On a discharging slant face 18 at the downstream side of the rubber band discharging passage 13 formed by extending the slant face, a stepped part having a thickness of the rubber band is formed. Thus, overlapping of the rubber bands is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic rubber banding machine for hanging a rubber band on a sushi container,
More specifically, the present invention relates to an automatic rubber banding machine characterized by a rubber band feeder for supplying a rubber band to be wrapped.

[0002]

2. Description of the Related Art As a conventional automatic rubber banding device,
A device described in Japanese Patent Publication No. 56-14524 filed by the applicant of the present application (hereinafter, abbreviated as “conventional device”) is known. This device is used to hang a rubber band on a container of a mass-produced mass sushi specially known as a representative of sushi. Generally, this trout sushi is made by wrapping sushi rice with sliced trout meat in bamboo leaves, placing it in the container body, placing a drop-down lid on it, and hanging a rubber band on the lid. It means that the sushi inside is always under pressure. Two push bars made of bamboo are arranged below the bottom of the container body and on the lid, respectively, and rubber bands are applied to both ends of the push bars protruding from the container body.

[0003] In the conventional apparatus, the push bars arranged on the bottom of the container and the outside of the lid are sandwiched between two conveyors so that these conveyors can be moved in synchronization with each other. The rubber band can be applied to both ends of the push bar that protrudes from the container. Conventional equipment with such a structure reduces the labor of workers and improves the efficiency of rubber banding by automating what would otherwise be done by workers manually attaching rubber bands to each container. It functions well, such as dramatically improving

[0004]

However, two (or more) rubber bands as described above may enter the outlet of the rubber band feeder in a state of being overlapped, and this may cause clogging. Removing the rubber band clogged in this way forces the worker to uselessly work,
This leads to a decrease in work efficiency. The inventor thought that if this could be alleviated, an automatic rubber band hooking device that would work better could be provided.

[0005] The problem to be solved by the present invention is to prevent the rubber band feeder from being clogged with the rubber band so that the conventional device can be operated more favorably without impairing its function.

[0006]

Means for Solving the Problems In order to solve the above-mentioned problems, the present inventor has adopted the following configuration in order to prevent two or more rubber bands from entering the guide nozzle at an overlapping state.

[0007] That is, the apparatus according to the first aspect of the present invention comprises a first conveyor, a second conveyor arranged so as to sandwich a container between the first conveyor and the first conveyor. And a driving means for moving the second conveyor in the opposite direction while synchronizing, a rubber band hanging means arranged on both sides of the two conveyors for hanging rubber bands on the container, and supplying rubber bands to the rubber band hanging means. In an automatic rubber band hooking device comprising a rubber band feeder and a rubber band hanging portion for hanging the rubber band supplied by the rubber band feeder on the container, the rubber band feeder has a cylindrical feeder body containing a predetermined number of rubber bands, and the cylindrical feeder. A rubber band supply section for supplying rubber bands to the main body and a rubber band discharged from a rubber band discharge path provided at an upper end portion of the feeder main body. A guide nozzle for guiding the falling to the hanging means, a spiral spiral guide path connecting the inside of the bottom of the cylindrical feeder body and the rubber rubber discharge path is provided inside the cylindrical feeder side wall, and the upper surface of the spiral guide path is provided. A slope formed at an acute angle with respect to the inside of the side wall of the cylindrical feeder, and having a width capable of mounting a rubber band, wherein the rubber band discharge path includes a discharge slope formed by extending the slope and a discharge slope formed by the discharge slope. The guide rail is provided at a lower portion, and the guide rail is formed so as to have a height dimension for mounting one rubber band on the discharge inclined surface, and the guide rail rotates in the same direction as the spiral direction of the spiral guide path. By applying vibration to the cylindrical feeder, vibration is applied to move the rubber band little by little on the inclined surface of the spiral guide path from the bottom of the cylindrical feeder body toward the rubber band discharge path. A step is provided, and a step is formed on the inclined surface on the downstream side in the helical direction of the rubber band discharge port so that a succeeding rubber band rides on a preceding rubber band to drop and eliminate the rubber band. is there.

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the automatic rubber band hooking device further includes a rubber band sensor for detecting a passing state of the rubber band in the guide nozzle. When the rubber band is stagnated, the vibration means is stopped by a signal from the rubber band sensor.

A third aspect of the present invention provides an automatic rubber band hooking device according to the first or second aspect of the present invention, further comprising a quantity detecting sensor for detecting the number of rubber bands accommodated in the cylindrical feeder body. Wherein the rubber band supply unit is stopped by a signal from the quantity detection sensor when the quantity exceeds a predetermined quantity.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partial plan view of an automatic rubber banding apparatus according to the present invention (hereinafter abbreviated as "this apparatus" as appropriate), and FIG. 2 is a side view showing a first conveyor and a second conveyor. FIG. 3 is a perspective view showing the rubber band feeder, and FIG. 4 is an enlarged view of FIG. FIG.
It is a side view of a rubber band hanging means.

In FIG. 1, reference numeral 1 denotes a first conveyor which is a long conveyor, and reference numeral 2 denotes a second conveyor which is a short conveyor.
Conveyors (virtual lines) are shown. The first conveyor 1 is stretched in the horizontal direction, and the container 40 is placed on the soil. A second conveyor 2 is stretched on the earth side of the first conveyor 1, and a container 40 is sandwiched between the two conveyors. In this embodiment, as shown in FIG. 4, two push bars are sandwiched between the bottom of the container 40 and the top of the lid of the container.

First conveyor 1 and second conveyor 2
Move in the opposite directions in synchronization with each other, and such movement is performed by the driving means 25 indicated by a virtual line in FIG. As shown in FIG. 2, in the present embodiment, the first conveyor 1 is clockwise at a preset speed, and the second conveyor 2 is counterclockwise.
The driving means 25 is configured to move in synchronization with the driving means.

In FIG. 1, reference numeral 5 denotes a rubber band hooking means. Rubber band hanging means 5 are provided on both sides of the first conveyor 1 and the second conveyor 2, and are adapted to rotate in synchronization with these conveyors. As shown in FIG. 5, the rubber band hooking means 5 includes both ends of the push bars 43, 43 (FIG. 1).
It is for hanging rubber bands.

That is, the rubber band hooking means 5 includes the main body 6
And two opening / closing arms 7, extending horizontally from the main body 6,
The opening / closing arms 7 open and close in the vertical direction. The opening and closing arms 7, 7 are provided with the guide nozzle 1
The rubber band falls inside the rubber band 4 and opens to hold the rubber band in a spread state. And FIG.
In the state shown in (1), they approach the conveyors 1 and 2 and the held rubber band is replaced with the push bars 43 by the action of the guide plate 8 arranged between them.

That is, as shown in FIG. 1, when the rubber band hooking means 5 comes to the side of the first conveyor 1 (the second conveyor 2), the opening / closing arms 7, 7 and the push bars 43, 43
However, when they are moved in this state, the rubber band they hold collides with the inclined surface 9 of the guide plate 8. When the rubber band moves further, the rubber band is
Is gradually released from the opening / closing arms 7 and 7
Move to 3,43. At the same time, the opening and closing arms 7, 7
Closes to shrink the rubber band.

The rubber band feeder 10 includes a rubber band hooking means 5.
To supply rubber bands. The rubber band feeder 10 allows the continuously supplied rubber band 44 to stand by in a state of being spread on the rotation trajectory of the opening / closing arms 7 and 7 and passes through the closed opening / closing arms 7 and 7, whereby the rubber band 44 Are held by opening and closing arms 7,7.

3 and 4, a rubber band feeder 1 is shown.
Numeral 0 denotes a cylindrical feeder main body 11 and a rubber band supply section 12 for supplying and supplying a rubber band to the rubber band feeder main body 10 from above.
And a guide nozzle 14 for guiding the rubber band discharged from the rubber band discharge path 13 provided at the upper end of the rubber band feeder body 10 to the rubber hooking means 5.

Reference numeral 23 denotes a quantity detecting sensor for detecting the number of rubber bands in the cylindrical rubber band feeder main body 10. When the number of rubber bands exceeds a certain number via an actuator denoted by reference numeral 24, the rubber band rubber is used. The supply of the rubber band is stopped by stopping the driving of the supply unit 12 to prevent the further rubber band from being supplied into the cylindrical rubber band feeder main body 10, while driving the rubber band supply unit 12 when the number of the rubber band becomes small. It has become. In this way,
By keeping the number of rubber bands in the cylindrical rubber band feeder 10 constant, it becomes possible to prevent the overflow and feed the rubber bands smoothly.

Inside the side wall of the cylindrical feeder body 10,
A spiral guide path 16 is provided to connect the feeder body bottom portion 15 and the rubber band discharge path 13. The spiral guide path 16 is provided at an acute angle with respect to the side wall of the cylindrical feeder body 10, and the rubber band is placed in a lying state. It is composed of an inclined surface 17 having a width. With this configuration, the rubber band placed on the inclined surface 17 always leans against the side wall of the cylindrical feeder main body 10 and does not slide down therefrom.

Further, a vibrating means 20 (not shown) is attached to the cylindrical feeder body 10 so that the spiral guide path 1
6 is applied to the cylindrical feeder body 10 in the same rotational direction as the helical direction. By applying the rotational vibration, the loose rubber band on the bottom portion 15 is guided by the centrifugal force toward the spiral guide path 16 while being gradually moved toward the outer periphery in the vibration direction by the action of centrifugal force. It is moved upward along the path 16 and guided to the rubber band discharge path 13.

The vibration means 20 is controlled by a signal output from a rubber band sensor 22 shown in FIG. That is, when the rubber band sensor 22 detects the rubber band stagnation in the guide nozzle 14, the vibration means 20 is stopped by the signal, and the driving is restarted when the stagnation is released. With this configuration, when the rubber band is stagnant in the guide nozzle 14, the vibration
0 prevents the rubber band from being forcibly pushed,
As a result, clogging in the guide nozzle 14 can be prevented. The output of the rubber band sensor 22 allows not only the above-described vibration means 20 but also the driving means 25
May be stopped. If you do this,
Further, a smooth rubber band hanging operation can be performed.

The rubber band discharge passage 13 includes a discharge inclined surface 18 which is an extension of the inclined surface 17 of the spiral guide path 16 and a discharge inclined surface 18.
Of the rubber guide provided at the lower part of the spiral guide path 16 for preventing the rubber band from falling.
The rubber band that has risen above is received and sent to the guide nozzle 14 that follows. Guide rail 19
Has a height dimension with respect to the discharge inclined surface 18 such that one rubber band can be placed in an upright state, so that when two (or more) rubber bands overlap, the outer rubber band is provided. And only one rubber band can be left on the discharge inclined surface 18.

A step 21 is formed on the discharge inclined surface 18 on the downstream side in the spiral direction of the rubber band discharge path 13 (upstream of the guide nozzle 14).
Is formed. As shown in FIG. 4, the step portion 21 is formed to be substantially equal to the thickness of one rubber band.
The subsequent rubber band 14b rides on the rubber band 14a that cannot move because the rubber band has stagnated in the guide nozzle 14, and is dropped and discharged as shown by a virtual line in the figure.

Since the guide rails 19 have only the height dimension on which one rubber band can be placed in the first place, it is explained earlier that the overlapped rubber bands are dropped by the action of the guide rails 19. As you did. However, if the rubber band applied by the rubber band applying means 5 at the end of the guide nozzle 14 is delayed for some reason, the rubber band is stagnated in the guide nozzle 14 and cannot receive the rubber band any more. If this state is left, the following rubber band will force the preceding rubber band into the guide nozzle 14, and as a result, clogging will occur. Therefore, the step 21 is provided to prevent such a situation.

Next, the process of applying the rubber band 45 to the container 40 will be described. As shown in FIG. 2, the first conveyor 1
Is divided into three sections, each of which is described from left to right in FIG. 2 as a package supply section, a sandwiching section, and a removal section.

First, a required amount of rubber band 45 is put into the rubber band feeder 10, and the rubber band hanging means 5, the first conveyor 1, and the second conveyor 2 are started. And the first
In the positioning 3 on the conveyor 1, two push bars 43, 43
Are arranged in parallel, and the bottom plate 41 of the container 40 is placed on the push bars 43, 43 with the bottom plate 41 facing down. Next, the drop-in type cover plate 4
On the other hand, the separate push bars 44, 44 are placed on the top of the container 2 and the push bars 43, 44 on the lower side of the bottom plate 41 of the container 40 are reached before reaching the clamping section.
43 and the push bars 44 on the upper side of the cover plate 42 are arranged so as to face in the same direction (a direction perpendicular to the moving direction of the conveyors 1 and 2).

Thereafter, the push bars 43, 4 arranged between the first conveyor 1 and the second conveyor 2 in the holding section.
The container 40 is pressed from below by the first conveyor 1 together with 3, 44, 44, and is pressed from the soil by the second conveyor 2, and is moved toward the unloading section while maintaining the state.

Here, as shown in FIGS. 1 and 2, the rubber band 45 in the rubber band feeder 10 is transferred while being aligned with the discharge port 11 by the vibration of the rubber band feeder 10, and the top rubber band 45 is attached to the rubber band attaching device 5. On the rotation trajectory of the open / close legs 7,7. Then, along with the movement of the rubber band hooking device 5, the top rubber band 45 is taken out by the open / close legs 7, 7 in the closed state.

The rubber band 4 taken out by the subsequent movement
5 is transferred to a position facing the side surfaces of the first conveyor 1 and the second conveyor 2. During this time, the opening / closing legs 7, 7 are opened, whereby the rubber band 4 which has shrunk in the closed state is opened.
Open 5 wide. At this point, the rubber band 45, which is largely opened by the opening / closing legs 7, 7, is at a position facing the side surfaces of the first conveyor 1 and the second conveyor.

Eventually, when the rubber band collides with the inclined surface 9 of the guide plate 8 and moves further, the rubber band is guided by the inclined surface 9 and gradually comes off the opening / closing arms 7, 7 and moves to the push bars 43, 43. At the same time, the opening / closing arms 7, 7 are closed and the rubber band is contracted, so that the rubber band hanging on the push bars 43, 43, 44, 44 is completed. The same process is repeated for the succeeding container 40.

[0028]

The use of the automatic rubber band hooking device according to the present invention makes it difficult for the rubber band feeder to be clogged with the rubber band. Therefore, it is possible to further reduce the labor of the worker and improve the efficiency of the rubber band hooking as compared with the conventional device. it can.

[Brief description of the drawings]

FIG. 1 is a partial plan view of an automatic rubber band hooking device according to the present invention.

FIG. 2 is a side view showing a first conveyor and a second conveyor.

FIG. 3 is a perspective view showing a rubber band feeder.

FIG. 4 is a partially enlarged view of FIG. 3;

FIG. 5 is a side view of a rubber band hanging means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st conveyor 2 2nd conveyor 5 Rubber band hooking means 8 Guide plate 10 Rubber band feeder 11 Cylindrical feeder main body 12 Rubber band supply part 13 Rubber band discharge path 14 Guide nozzle 15 Feeder main body bottom 16 Spiral guide path 17 Slope 18 Discharge inclination Surface 19 Guide rail 20 Vibration means 40 Container 41 Bottom plate 43 Push bar 44 Push bar 45 Rubber band

Claims (3)

[Claims] 1. A first conveyor, a second conveyor arranged so as to sandwich a container between the first conveyor and the first conveyor, and a reciprocal reaction while synchronizing the first conveyor and the second conveyor. Drive means for moving the rubber band in the direction of movement, rubber band hanging means arranged on both sides of the two conveyors for hanging rubber bands on the container, a rubber band feeder for supplying rubber band to the rubber band hanging means, and a rubber band supplied by the rubber band feeder. An automatic rubber band hooking device comprising a rubber band hooking section for hanging the rubber band on the container, wherein the rubber band feeder has a cylindrical feeder main body containing a predetermined number of rubber bands, and a rubber band supply section for supplying the rubber band to the cylindrical feeder main body. A rubber nozzle that is provided at the upper end of the feeder main body and a guide nozzle that guides the rubber band discharged from the rubber rubber dropping means to the rubber hooking means. A spiral spiral guide path connecting the inside of the bottom of the cylindrical feeder body and the rubber rubber discharge path is provided on the inside of the cylindrical feeder side wall, and the upper surface of the spiral guide path is positioned with respect to the inside of the side wall of the cylindrical feeder. An inclined surface having an acute angle and a width capable of mounting a rubber band, wherein the rubber band discharge path comprises a discharge inclined surface extending from the inclined surface and a guide rail provided below the discharge inclined surface; A guide rail is formed so as to have a height dimension capable of mounting one rubber band on the discharge inclined surface, and a rotational vibration in the same direction as the spiral direction of the spiral guide path is applied to the cylindrical feeder, Vibration means for moving the rubber band in small increments on the inclined surface of the spiral guide path from the bottom of the cylindrical feeder body in the direction of the rubber band discharge path is provided, below the rubber band discharge port in the spiral direction. On the slope on the flow side,
An automatic rubber band hooking device, characterized in that a step portion is formed on a preceding rubber band, on which a succeeding rubber band rides and is eliminated by dropping. 2. A rubber band sensor for detecting a passing state of rubber band in the guide nozzle is provided, and when the rubber band is stagnated in the guide nozzle, the vibration means is stopped by a signal from the rubber band sensor. 2. The automatic rubber band hooking device according to claim 1, wherein: 3. A quantity detection sensor for detecting the number of rubber bands stored in the cylindrical feeder main body, and when the quantity exceeds a predetermined quantity, a signal from the quantity detection sensor is used to detect the number of rubber bands. 3. The automatic rubber band hooking device according to claim 1, wherein the supply unit is stopped.