JPH0723133B2 - Rubber band feeder and diameter expansion feeder - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a device for supplying rubber bands one by one and a device for expanding the diameter of the rubber bands and supplying them.

<Prior Art> Rubber bands are widely used as a simple binding means for articles, but a device capable of automating the binding has not been sufficiently improved. For example, as a method of enlarging the diameter of a rubber band, it is sufficient to support the rubber band at a plurality of points and move it in the radial direction, but the rubber bands are automatically attached to the supporting means one by one. Was difficult. This is because it is highly flexible, its shape is unstable, and the rubber bands tend to get entangled with each other, making it extremely difficult to place the rubber bands one at a time in a fixed position. I couldn't install it properly. Therefore, hold each rubber band by hand,
Had to attach to the support means.

<Problems to be Solved by the Invention> An object of the present invention is to provide a device capable of supplying rubber bands one by one to a fixed position.

Another object of the present invention is to provide a device for supplying rubber bands one by one with their diameters expanded.

<Means for Solving the Problems> Therefore, the present invention solves the above problems by providing the following rubber band supply device.

The rubber band supply device of the present invention has a transfer surface such as a belt in which a storage hole capable of storing one rubber band is formed, a conveyor for transferring the rubber band placed on the transfer surface, and a transfer surface on the transfer surface. And a rubber band excluding device for injecting a fluid such as air. Then, the rubber bands that cannot be stored in the storage holes are removed from the transfer surface by the rubber band removing device, so that the rubber bands are supplied one by one.

Further, the present invention is characterized in that, in the above-mentioned rubber band supply device, an obstacle that prevents the movement of the rubber band that could not be stored in the storage hole is arranged on the transfer surface on the starting end side of the rubber band removing device. And provide what to do.

Furthermore, the present invention provides a dropping device for dropping a rubber band on a transfer surface such as a belt, the above-mentioned supplying device for supplying the dropped rubber bands one by one, an arrangement device for receiving the supplied rubber bands in a fixed position, and a rubber band. (EN) Provided is a rubber rubber diameter expanding and feeding device which is received from a disposing device and expands the diameter thereof.

<Operation> In the supply device of the present invention, the storage hole provided on the transfer surface of the belt or the like defines the position of the rubber band to be supplied, and the rubber band is transferred toward the end of the conveyor with the position being specified. To be done. At this time, the rubber bands that have been transferred to the transfer surface of the belt or the like without entering the storage holes are removed to the outside of the conveyor by the air injection by the air nozzle. As a result, the rubber bands are supplied one by one in a state in which their positions are defined by the storage holes.

The obstruction body prevents the rubber band remaining on the transfer surface of the belt or the like from entering the storage hole and being carried toward the terminal end of the conveyor, and allows the rubber band to enter the next storage hole.

Further, in the rubber band diameter-expanding supply device of the present invention, the dropping device drops the rubber band on a transfer surface such as a belt. The dropped rubber bands are supplied one by one by the above-mentioned supply device in a state where the positions thereof are defined by the storage holes. Then, the placement device receives the supplied rubber band at a fixed position, the diameter expanding device receives the rubber band from the positioning device, and expands and supplies the rubber band in a state in which the diameter is expanded.

<Example> An example of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of one embodiment, and this apparatus is a rubber band dropping device (1) arranged on a pedestal and a feeding device (2) for feeding the rubber bands dropped by the dropping device one by one.
A placement device (3) for receiving the supplied rubber band at a fixed position, and a diameter expanding device (4) for receiving the rubber band from the positioning device and expanding its diameter.

As shown in FIGS. 1 and 2, the dropping device (1) is composed of a cylindrical rotary drum (11) and a supporting / rotating means thereof.

The rotating drum (11) is arranged such that its central axis is substantially horizontal, and is arranged below the one end of the rotating drum (11) with two rollers (12) (12) and below the other end. And two rollers (12) and (12). These rollers (12) ... Are rotated by the electric motor (13) and the rotating shaft (14), whereby the rotating drum (11) is rotated. Incidentally, it is desirable that grooves (15) are provided around both ends of the rotary drum (11) so as to correspond to the rollers (12).

The rotary drum (11) has a plurality of locking protrusions (16) arranged at equal intervals on the inner peripheral surface of the center thereof. In this embodiment, a screw (17) is screwed through the inside and outside of the rotary drum (11), and the shaft portion of the screw projecting on the inner peripheral surface of the screw serves as a locking protrusion (16).

Explaining how to use and the operating state of the dropping device (1), first, a large number of rubber bands are put in the lower inner circumference of the rotating rotary drum (11). As the rotary drum (11) rotates, the rubber bands (a) are caught one by one on the locking projections (16) and lifted upward. Then, when the rubber band is carried up to the vicinity of the uppermost portion, the rubber band is disengaged from the locking projection (16) and naturally drops onto the conveyor (21) of the supply device described below.

In addition, it is preferable to arrange the guide plates (18a) and (18b) on both sides and the right end side in FIG. 1 of the rotary drum so that the falling rubber bands are guided to the center of the conveyor (21). It is preferable to arrange a rear closing plate (19) (Fig. 2) and a front closing plate (20) (Fig. 1) so that the rubber band does not jump out from the inside of the drum. These (18a) (18b)
The (19) and (20) may be supported by the frame of the frame or the conveyor (21).

Next, the supply device will be described.

As shown in FIGS. 1, 3, and 4, this supply device includes a conveyor (21) and an air nozzle (28) which is a rubber band removing device.

The conveyor (21) has a belt (2
3) is a belt conveyor with endless tension, and is arranged so as to penetrate through the rotating drum (11) described above, and the rubber band dropped in the rotating drum (11) is carried up to the end at the upper left of Fig. 1. .

The belt (23) has a thickness almost equal to that of the rubber band (a), and storage holes (24) slightly larger than the diameter of the rubber band (a) penetrate the front and back of the belt at equal intervals in the longitudinal direction of the belt. Has been formed. On the back side of the belt,
The rubber band (a) in which the 5) is arranged and naturally falls into the storage hole (24) slides on the sliding plate (25) and moves.
Also, a rubber band (a) that did not fit into the storage hole (24).
Moves while resting on the transfer surface of the belt (23).
The sliding plate can be removed by forming a bottomed hole that does not penetrate the storage hole. Further, the conveyor may be replaced with a belt conveyor and may be another type of conveyor such as a chain conveyor.

In addition, the rubber band naturally falls from the drop device and the storage hole (2
4) The fall timing and the position of the storage hole are adjusted so that the rubber band that did not enter the hole (24) at the time of the fall may enter the storage hole (24) during transfer in this embodiment. Use body (29) together. The obstacle (29) has a plate shape, and the lower end of the obstacle (29) is in contact with the transfer surface of the conveyor belt (23), or the distance between the lower end and the transfer surface is not larger than the thickness of the rubber band, and is located on the transfer surface. It is arranged substantially orthogonal to the transfer direction. This prevents the rubber band not correctly entering the storage hole (24) from being carried toward the end of the conveyor, and allows the rubber band to enter the next storage hole (24). Nevertheless, the rubber band is elastic and easily twisted, so that the rubber band may be fed under the obstacle (29) toward the terminal end. Therefore, it is desirable to provide a plurality of obstacles (29) at appropriate intervals, and further, at the end of the conveyor, there is provided a device (described later) for eliminating rubber bands that did not finally enter the storage hole (24).

Also, a guide plate (30) to guide the rubber band to the storage hole (24).
It is also preferable to stretch (30) along both sides of the storage hole (24) on the belt (23) along the longitudinal direction. This guide plate (3
0) may be supported by the frame of the conveyor (21) or the hood (26) described later.

Next, a hood (26) is provided on the terminal side of the conveyor (21), and a rubber band eliminating device is arranged in the hood.

The hood (26) covers the vicinity of the end of the conveyor, and the bottom (27) thereof extends below the conveyor into the rotary drum (11) to provide a rubber band return path.

In the hood, an air nozzle (28) connected to an air compressor (not shown) is arranged on the upper side portion of the conveyor (21) in a direction intersecting the traveling direction. Then, by injecting air onto the transfer surface of the conveyor (21), the rubber band that does not enter the storage hole (24) correctly but moves on the transfer surface of the belt (23) is blown out of the conveyor. The blown rubber band hits the side wall of the hood (26) and falls to the bottom (27), and due to its own weight, the bottom (27).
It slides down and is returned to the inside of the rotating drum (11).

As described above, in the rotary drum, the rubber band (a) dropped from the locking protrusion (16) enters the storage hole (24) provided in the belt (23) of the supply device (2), and the conveyor (21). Is transferred toward the end of the. At this time, when the rubber band (a) is dropped, the rotary drum (11) is so that the storage hole (24) is at the drop position.
Adjust the timing and position of the conveyor and the conveyor (21). The rubber band (a) transferred to the belt (23) without entering the storage hole (24) is ejected to the outside of the conveyor by the air injection by the air nozzle (28). The removed rubber band passes through the bottom of the hood (26) and is returned to the rotary drum (11). In this way, the rubber bands are supplied one by one, with their positions being regulated by the storage holes (24).

It is desirable that the depth of the storage hole (24) is approximately equal to the thickness of the rubber band, but the depth may be smaller than the thickness of the rubber band as long as the stored rubber band is not blown by the air injection. Further, even if the depth of the hole is larger than the thickness of the rubber band, at least one of the two rubber bands overlapped in the storage hole can be removed by air. The plane shape of the storage hole (24) is preferably a circle having the same shape as the rubber band, but can be changed to another shape as long as two or more rubber bands are not stacked and not stored.

Air is the cheapest and easiest to use from the air nozzle (28), but it may be changed to another fluid.

Next, the rubber bands supplied by the supply device are directed to the placement device (3). The arrangement device (3) includes a chute (31) whose upper end faces the conveyor (21) and a chute (3
1) A rotary plate (32) provided at the upper end and a shutter (33) arranged at the lower end are provided (Figs. 4 to 6).

The chute (31) is composed of a trough (34) having a U-shaped cross section and a lid plate (35) which closes an open portion of the U-shape, and has a rectangular cross section through which one rubber band (a) can pass. With a passage.

A rotating plate (32) is pivotally attached to the upper end of the chute (31). The rotating plate (32) bridges the end of the conveyor (21) and the upper end opening of the chute (31). Then, by rotating the cylinder or the electric motor as a drive source (not shown), the upper end opening of the chute (31) is closed as shown by the chain double-dashed line in FIG. Therefore, as shown by the solid line,
When the rotating plate (32) is opened, the rubber band passes from the end of the conveyor onto the rotating plate (32) and enters the chute (31). In the closed state, the rubber band passes from the end of the conveyor onto the rotating plate (32) and drops onto the bottom portion (27) of the hood (26),
It is returned to the rotating drum (11).

A rubber band take-out port is provided at the lower end of the chute (31). This outlet has a gutter (34) and a lid plate (35).
It is formed by not closing. Then, a shutter (33) is arranged at this outlet to open and close this outlet. The lower end surface of the gutter is closed by a closing plate (36).

As shown in FIG. 5, the shutter (33) is composed of a substantially U-shaped plate-like member, is attached to the tip of the piston rod of the air cylinder (37), and is extended by the extension of the piston rod to raise the outlet. It is closed and the piston rod contracts to fall and open the outlet.

A large number of air jets (38) are formed in the gutter which is the back of the outlet, and the air nozzle (39) is behind it.
And an air pocket (40). Further, sensors (41) composed of an optical body and a light receiving body are attached to both sides of the trough portion to detect the presence or absence of a rubber band (a) at the outlet.

Next, the movement of the placement device will be described.

First, when the rotating plate (32) is in the open state shown by the solid line, the rubber band passes over the rotating plate (32) from the end of the conveyor (21),
Enter the shoot (31). The rubber band slides down inside the chute (31) and is closed by the closing plate (36).
Stop at the bottom.

The sensor (41) detects the presence of the rubber band (a). Based on this detection, the rotating plate (32) is rotated to be in the closed state indicated by the chain double-dashed line. As a result, the next rubber band is returned from the conveyor to the rotating drum (11) and is not supplied into the chute (31).

At the same time, the central axis (51) of the diameter expanding device (4) described later.
The tip is inserted through the U-shaped opening of the shutter (33),
The tip pin (52) is inserted into one of the air injection ports (38).

Next, the shutter (33) descends to open the take-out port, air is ejected from the air nozzle (39) through the air reservoir (40) and the air ejection port (38), and the rubber band (a) is blown off and expanded. A rubber band is hung on the central shaft (51) of the diameter device (4).

Sensor that rubber band has disappeared from inside chute (41)
Is detected and the central shaft (51) with the rubber band retracts,
The shutter (33) is closed and the rotary plate (32) is opened, and the next rubber band is supplied.

When the chute (31) is long, a rubber band temporary stop device may be provided in the middle of the dropping path. This temporary stop device can be, for example, a closing plate that projects into the path, closes the path, and is pulled out of the path to open the path. The opening and closing by the closing plate is performed by opening and closing the rotating plate (32). It should be synchronized with.

Next, a rubber band expanding device will be described.

The diameter expansion device includes a center shaft (51) and a diameter expansion arm (61) arranged on the upper, lower, left, and right sides of the center shaft (51) and expanding in a radially outward direction. By expanding the diameter expansion arm (61), This device expands the diameter of rubber bands.

The central shaft (51) has a conical tip, and a tip pin (52) projects from the tip of the conical portion. Also, in the cone part,
Four expanded arm receiving grooves (53) are formed.

The base end of the central shaft (51) is connected to the sliding cylinder (54), and the base end of the sliding cylinder (54) is connected to the tip of the piston rod (56) of the cylinder (55). This allows the central axis (5
1) moves back and forth by the stroke of the piston rod (56). A guide disc (57) is fixed to the tip of the sliding column (54). This guide disc (57) has
A notch is formed in the radial direction to receive each expanding arm (61).

The diametrical expansion arm (61) has a substantially L-shaped base end portion, and the L-shaped bent portion is rotatably supported by the support portion (63) at the tip of the fixed cylinder (62). ing.

The fixed cylinder (62) is supported by the support column (81), and its base end is fixed to the body of the cylinder (55).
The entire device is supported by the support column (81). Inside the fixed cylinder (62) is the above-mentioned sliding cylinder (54).
Is inserted so that it can move back and forth.

A front sliding disk (64) is mounted on the outer periphery of the fixed cylinder (62) so as to be movable back and forth. This front sliding disk (64) has 4
The book connecting member (65) is attached, and the connecting member (65) is attached.
Is connected to the L-shaped tip of the expanding arm (61). Then, the expanding member (6
The diameter expanding arm (61) is closed by pushing the L-shaped tip of 1), and the diameter expanding arm (61) is opened by pulling the connecting member. It is desirable that a turnbuckle or the like be used for the connecting member (65) so that its length can be adjusted.

A rear sliding disk (66) is mounted on the outer periphery of the cylinder (55) body so as to be movable back and forth. The rear end of the long rod (67) is fixed to the rear sliding disc (66) by a nut. The long rod (67) slidably penetrates through the front sliding disc (64), and its tip is fixed to the guide disc (57) by a nut. The forward sliding nut (68) and the backward moving nut (69) sandwich the front sliding disk (64) to form a long rod (67).
Is attached to. The length x between the nuts (68) (69) is set shorter than the stroke length y of the piston rod (56). The difference y−x = z is the moving length of the front sliding disc (64).

Here, the relationship of movements of the above-mentioned respective parts will be described. First, when the piston rod (56) begins to retract from the extended state, the sliding cylinder (54) connected to it and the central shaft (5
1) also retreats together. Further, the sliding guide plate (57) fixed to the sliding column (54) is also retracted, and the long bar (6
The rear sliding disk (66) connected via 7) also retracts. However, at this point, that is, while the piston rod (56) is retracting by the length x, only the long rod (67) penetrating the front sliding disc (64) is retracted, and the front sliding disc (64) itself is Does not retreat.

When the piston rod retracts further, the retract nut (6
9) hits the front surface of the front sliding disk (64), and the front sliding disk (6
4) Set back. Its receding length is y−x = z. When the front sliding disk (66) retreats, the connecting member (65) pulls the L-shaped tip of the diameter expansion arm (61) rearward, whereby the diameter expansion rotatably supported by the support portion (63). The arm (61) opens.

On the other hand, when the piston rod moves forward, the front sliding disc (64) does not move forward until the advance nut (68) hits the rear surface of the front sliding disc (64). Then, after this hits, the front sliding disk (64) advances by the length z, and pushes the L-shaped tip of the diameter expansion arm (61) forward through the connecting member (65) to expand the diameter expansion arm ( Close 61).

Next, attach the extruding member (7
1) is attached slidably in the longitudinal direction of the arm. A tip of a wire rod (72) such as a piano wire is connected to the pushing member (71), and a rear end of the wire rod (72) is a piston of a small cylinder (73) attached to a rear end of the cylinder (55). It is connected to the tip of the rod. Then, when the piston rod of the small cylinder (73) extends, the pushing member (71) moves forward to fly the rubber band (a) hung on the tip of the diameter expansion arm (61) forward.

This wire rod (72) is an L-shaped part at the base end of the expanding arm (61),
It is slidably passed and guided in insertion holes formed in the front and rear sliding disks (64) (66). Also, the expanding arm (6
A similar guide may be provided in the middle of 1). Also, in the figure, one cylinder is prepared for one wire,
Two or more wire rods may be moved by one cylinder.

The diameter expansion device (4) is supported by the support column (81) as described above. As shown in FIG. 1, the lower ends of the support columns (81) are guided by the rails (82) so that they can slide in the left-right direction in FIG. Move to. Further, the support column (81) of the diameter expanding device is rotatable, and the cylinder (8
It can be rotated 90 degrees by 3) and its tip can be directed toward the chuck (5).

Next, the operating state of the diameter expanding device will be described.

First, the piston rod (56) extends, the diameter expansion arm (61) closes as described above, and the piston rod of the cylinder (83) extends, so that the diameter expansion device (4) as a whole is placed in the arrangement device (3). Move in the direction of. Then, the central shaft (51) is inserted into the shutter (33), and the tip pin (52) thereof is inserted into one of the air ejection ports (38). Then, the rubber band is delivered in the manner described above, and the rubber band is hooked on the tip of the diameter expansion arm (61).

Next, the piston rod (56) retracts, the diameter-expanding arm (61) opens in the above-described manner to expand the rubber band (a), and the entire diameter-expanding device (4) is moved by the cylinder (83). fall back.

After retreating, the diametrical expansion device (4) rotates 90 degrees, and its tip is directed toward the chuck (5). The chuck (5) moves,
The object bound by the rubber band is inserted into the expanded rubber band.

Here, the small cylinder (73) operates, its piston rod extends, and the pushing member (71) advances toward the tip end of the diameter expansion arm (61). As a result, the rubber band hung on the tip pops out and the object to be bound can be bound.

The object can be inserted deeper into the rubber band by making only the central axis of the diameter-expanding device (4) expandable and contractable by a cylinder or the like.

<Effects of the Invention> As described above, in the feeding device of the present invention, it is possible to arrange rubber bands, which are rich in flexibility, unstable in shape, and easy to be entangled, at a fixed position one by one. . As a result, it is possible to favorably automate the binding of articles by the rubber band.

By providing an obstacle, the rubber bands can be more surely inserted into the storage hole, and the rubber bands can be continuously and individually
It is possible to supply it at a fixed position, and it is possible to achieve better automation.

Further, in the rubber band diameter expanding and feeding device of the present invention, the process from the rubber band supplying to the diameter expanding is automated, and the present invention resists the rubber band supplying device and the diameter expanding and feeding device which bring about great progress in supplying the rubber band. That is what I got.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment, FIG. 2 is a front view of a rotary drum of a dropping device, FIG. 3 is a plan view of a main part of a conveyor of a supply device, FIG. 4 is a side view of the same part, and FIG. FIG. 6 is a front view of a main part of the placement device, FIG. 6 is a side view of the main part, FIG. 7 is a side view of the diameter expanding device in a closed state, and FIG. (1) …… Dropping device, (2) …… Supply device, (3) ……
Arrangement device, (4) …… diameter expanding device, (11) …… rotating drum, (16) …… locking protrusion, (21) …… conveyor, (23)
…… Belt, (24) …… Housing hole, (25) …… Sliding plate,
(28) …… Air nozzle, (29) …… Obstacle, (31) ……
Shoot, (32) …… Rotating plate, (33) …… Shutter,
(38) …… Air jet, (39) …… Air nozzle, (4
0) …… Air trap, (41) …… Sensor, (51) …… Center shaft, (52) …… Tip pin, (53) …… Expansion arm receiving groove, (a) …… Rubber band.

Claims (3)

[Claims] 1. A conveyor for transferring a rubber band placed on the transfer surface, which has a transfer surface such as a belt having a storage hole for storing one rubber band downward from the upper surface, and a transfer device for transferring the rubber band. A rubber band expulsion device for injecting a fluid such as air is provided on the upper surface of the surface, and a storage hole formed from the upper surface of the transfer surface protects the rubber band against the fluid such as air ejected from the rubber band expulsion device. A rubber band supply device having a depth capable of being held in the storage hole and removing rubber bands that could not be stored in the storage hole from the transfer surface by jetting fluid from the rubber band removing device. 2. A transfer surface on the starting end side of the rubber band removing device,
2. The rubber band supply device according to claim 1, wherein an obstacle that prevents the rubber band that could not be stored in the storage hole from proceeding is arranged. 3. A dropping device for dropping a rubber band on a transfer surface such as a belt, and a dropped rubber band are supplied one by one.
Alternatively, the feeding device according to 2, the placement device that receives the fed rubber band at a fixed position, and the placement device that receives the rubber band,
A rubber rubber diameter expanding and feeding device comprising a diameter expanding device for expanding the diameter.