JPH0335174B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is useful for bundling long objects such as round iron bars, square wood, green onions, chrysanthemums, carnations, etc. using a bundling tape. The present invention relates to a suitable automatic binding device, and more particularly, to an automatic binding device that can reliably wind binding tape around objects to be bound.

(Prior art) As a conventional binding device, for example, Japanese Patent Application Laid-Open No. 57-125107
The base end of the binding arm of the device disclosed in the publication is pivotally supported by a support member erected on a base, and the binding arm is provided so as to be movable up and down about this axis. The tape is therefore drawn out diagonally between the tape holding device and the free end of the binding arm. When the objects to be bound are pressed against the obliquely pulled out tape and the objects are bound while the binding arm is tilted, the following problem arises. In other words, when the object is pressed against the tape, the tape sticks to the object, so there is no slippage between the tape and the object, so the object is pulled out diagonally while turning the object forward. The items to be bound must be placed on the mounting table by pushing in the tape. In this way, the tape is wound around the object while turning the object forward, so when the object swings laterally to the tape that has been pulled out, the tape snakes around the outer surface of the object. It will be wound. For this reason, there is a problem that the adhesive surfaces of the tapes cannot be bonded together by pressure when bundling, and that the tapes that are tied in a meandering manner have a poor appearance. In addition, since the object to be bound and the tape are stuck together, if the object to be bound is not rotated forward enough, a tensile force will be generated in the tape end grip of the tape holding device and the grip will come off. There is.

(Objective) The present invention has been made in view of the drawbacks of the prior art described above, and an object of the present invention is to provide an automatic binding device that can more reliably wind binding tape around objects to be bound. It is in.

(Structure of the Invention) The present invention provides a binding device for binding objects by holding the cut end of the binding tape with a holding means and pressing the binding tape against the binding tape pulled out between the free end of the binding arm and the free end of the binding arm. A driving means for advancing and retracting the binding arm with respect to the object to be bound, a rotary wheel that is provided with the binding arm swingably on the driving means and rotates as the driving means moves forward and backward, and the rotation of the rotary wheel is provided. a swinging means for swinging the binding arm, and a combination of the forward and backward movement of the binding arm by the driving means and the rocking movement of the binding arm by the swinging means moves the tip of the binding arm, thereby moving the binding tape. Winding and crimping around drawers and objects to be bound,
It is characterized in that it performs cutting.

(Embodiment) The present invention will be described below with reference to embodiments shown in the drawings. As shown in FIG. 1, a base 2 is provided on a machine frame 1; ,
An elongated hole 3 is formed, and a cylinder 5 as a driving source having a piston rod 4 is placed at the rear in the longitudinal direction of the hole 3. The piston rod 4 moves inside the elongated hole 3 along its longitudinal direction. It has become possible to advance and retreat. A support block 5' that is slidable in the elongated hole 3 is attached to the tip of the piston rod 4, and a binding arm 6 is attached to one end of the block 5' on the side where the piston rod 4 is attached, which can be freely raised and folded. The proximal end of the block 5' is pivotally attached to the block 5', and the other end of the block 5' has a
A rotary wheel 7 having a pinion 6' is rotatably mounted around a shaft 7a. This rotating wheel 7
has a long hole 6 extending along the longitudinal direction of the binding arm 6.
A guide protrusion 8 is formed which is slidably engaged with a.

A reel stand 10 for rotatably holding the tape reel 9 is further attached to the support block 5', and between both ends of the block 5',
A first belt pulley 12 having a gear 11 that can freely mesh with the pinion 6' is rotatably mounted. This first belt pulley 12 includes a first belt 13
One end of the belt 13 is wound around the belt, and the other end of the belt 13 is connected to a second belt rotatably attached to the reel stand 10.
It is wound around the belt wheel 14. One end of a link 15 is rotatably attached to the rotating shaft 14a of the second belt pulley 14, and a third belt pulley 16 is rotatably attached to the other end of the link 15. The second belt pulley 14 is composed of a large diameter portion 17a and a small diameter portion 17b formed on the side surface of the large diameter portion 17a, and the other end of the first belt 13 is formed of a small diameter portion 17a.
7b. One end of a second belt 18 is further wound around this second belt pulley 14 , and the other end of the second belt 18 is wound around a third belt pulley 16 . The third belt pulley 16 includes a large diameter portion 16a and a small diameter portion 16b formed on the side surface of the large diameter portion 16a.
It is wound around b. Note that rubber, knurled iron, or the like is used for the large diameter portion 16a.

One end of a spring 19 is attached between both ends of the link 15, and the other end of the spring 19 is attached to the reel stand 10. The link 15 is resiliently biased in the direction of the tape reel 9 by the spring 19, and the third belt pulley 16 is biased by the biasing force.
is pressed against the binding tape T wound around the tape reel 9. This tape T is unwound from a tape reel 9 and is attached to a roller 20 provided on a binding arm 6.
a, 20b, and 20c, and its tip is held by a tape holding device, which will be described later.

On the machine frame 1, a rack 21 with which a pinion 6' can freely engage is provided along the longitudinal direction of the elongated hole 3, and as described later, the pinion 6' is moved in the longitudinal direction of the rack 21 as the piston rod 4 moves back and forth. It is designed to move along the axis while rotating.

Here, to describe the operation of the device having the above configuration, FIG. 1 shows the crimping and tilting posture of the binding arm 6, in which the piston rod 4 is extended and the support block 5' at the tip thereof is inserted into the elongated hole 3. It abuts against a stopper 22, which serves as a cushioning material, provided at the front end.

When the piston rod 4 starts to retreat from this state, the pinion 6' engaged with the rack 21 rotates counterclockwise in the drawing, and at the same time, the guide protrusion 8 fitted in the elongated hole 6a also moves into the elongated hole 6a.
Since the binding arm 6 rotates in the same direction while sliding along the longitudinal direction, the binding arm 6 rotates counterclockwise while being guided by the guide protrusion 8.

FIG. 2 shows the state after the piston rod 4 has retreated a predetermined distance, and the binding arm 6 is in an upright position. If the piston rod 4 continues to retreat from this state, the binding arm 6 will again enter the tilted position, and when the piston rod 4 completes its retreat, the binding arm 6 will take the standby tilted position as shown in FIG. .

When the binding arm 6 moves back as described above, the first belt pulley 12 meshed with the pinion 6' is rotated clockwise, and this rotational force is transmitted to the second belt pulley 14 via the first belt 13. The second belt pulley 14 will rotate clockwise. The rotational force of the second sheave belt 14 is transmitted to the third sheave belt 16 via the second belt 18, and the third sheave belt 16 rotates clockwise. Therefore, the tape reel 9 to which the large diameter portion 16a of the third belt pulley 16 is pressed rotates counterclockwise, and as a result, the binding tape T is unwound from the tape reel 9.

When the piston rod 4 begins to extend from the standby tilted position shown in FIG. 3, the rotary wheel 7 rotates clockwise in the opposite direction to the above, and the binding arm 6 moves forward while rotating clockwise, as shown in FIG. After passing through the standing position shown in Figure 1, the crimp leaning position shown in Figure 1 is reached.

When the binding arm 6 moves forward, the first belt pulley 12 is rotating counterclockwise, contrary to the above, and therefore the third belt pulley 12 is rotating counterclockwise.
The belt pulley 16 will rotate counterclockwise, and as a result, the tape reel 9 will rotate clockwise, so a force in the unwinding direction will act on the binding tape T, causing the tape T to be in a tensioned state. will be held. To rewind this tape T,
This continues until the tape is crimped by the binding arm 6, which will be described later.

FIG. 4 shows an example in which the bundling device A having the above configuration is applied to an automatic bundling device for objects to be bound.

The automatic binding device B installed on the machine frame 1 has a function of converging the objects to be bound in advance before wrapping the binding tape around the objects, and has a rotary disk 38. The rotating disk 38 is a rotating shaft 39
40 is a bearing thereof. This rotary disk 38 is provided with object placement parts 41, 42, and 43 at 120-degree symmetrical positions in the circumferential direction, and in FIG. 4, the position where the object placement part 41 is present is Placement station for objects to be bound, object placement section 4 for objects to be bound
The position where 2 exists is the binding station for the objects to be bound, the position where the object to be bound section 43 is located is the dropping station for the objects to be bound, and 44 is the object to be bound. The rotary disk 38 is rotated in the direction of the arrow X in FIG.
Reference numeral 6 denotes the cam surface, which is in the shape of an arc centered on the rotating shaft 39. A shaft 47 is installed on the side surface of the rotary disk 24 at a symmetrical position of 120 degrees, and a drive plate 48 is rotatably provided on this shaft 47.
The drive plate 48 has a roller 49 and a toothed portion 50, is biased in the illustrated direction by a spring 51, and is stopped from rotating in the biased direction by a stopper pin 51'. . roller 49
is configured so that it slides into contact with the cam surface 46 while the object placement section rotates from the placement station toward the drop station. A bundling member 54 is provided to rotate integrally with the gear 52. Here, the bundling member 54 includes an arc-shaped bundling plate 55 and an elastic bundling rope 56. The bundling member 54 faces the object placing section 41 from the open side thereof, and the drive plate 48 moves the object during the process from the placing station to the bundling station. The roller 49 is rotated in sliding contact with the cam surface 46, and the rotation of the drive plate 48 is transmitted to the gear 52, the bundling member 54 is rotated, and the objects to be bound 4 are rotated.
Reference numeral 4 denotes a device that is tightened and bundled from the loading station to the binding station, and after the binding of the objects 44 is completed, the action of the spring 51 is applied during the process from the binding station to the dropping station. The drive plate 51 is rotated by this, and the bundling member 54 is rotated in the direction to release the bundling.

The guide roller 20c provided at the free end of the binding arm 6 is moved from the tape holding device 27 to the guide roller 20c when the binding arm 6 is in the standby tilted position.
It has a function of tensioning the binding tape tensioning part up to c almost horizontally, and in the process from when the object 44 to be bound comes into contact with the binding tape to reaching the binding station, the tensioning of the binding tape is As shown in FIG. 4, when the cylinder 5 is driven, the binding arm 6 is moved forward toward the tape holding device 27 and changed from the standby leaning position to the standing position. The binding tape is wound around the object to be bound 44 in a trajectory that leads to the crimped and tilted position shown in FIG. Since it is wound around the object to be bound 44 as if it were wrapping around the object to be bound 44, the binding tape T is wound tightly around the object to be bound 44, and the binding tape T is wrapped around the object to be bound 44. This ensures that the binding tape T is wound securely.

The objects to be bound 44 are bound by the binding device A and then dropped at a drop station, and are received by a belt conveyor 58 and conveyed. A brush 57 is provided so as to face the winding end of the binding tape T wound around the object to be bound 44, and this sticking brush 57 sticks the winding end to the object to be bound 44 and binds the object. It has the function of improving the appearance of the objects to be bound.

(Effects) As explained above, the present invention imparts forward/backward motion and rocking motion to the tying arm, and by combining these two movements, the tip of the tying arm moves from the standby tilted position to the standing position, and then to the crimp tilted position. As a result, the pulled out binding tape becomes almost horizontal, and when placing objects to be bound on the mounting table, no tension is applied to the grip at the cut end of the tape, and the binding tape is Since the tape portion is wrapped around the object to be bound over the entire circumference of the object to be bound, as if wrapping around the object to be bound, the binding tape is wound in close contact with the object to be bound. This ensures that the binding tape is wound around the objects to be bound.

[Brief explanation of drawings]

Figures 1 to 3 are front views for explaining the operation of the binding device according to the present invention, and Figures 4 to 6 show the same device applied to an automatic binding device for objects to be bound, and each figure shows the operation. It is a front view following progress. 6... Binding arm, 27... Tape holding device, 44
...Object to be bound, {3... Piston rod, 5...
Cylinder} Drive source, {6'... Pinion, 8... Guide protrusion, 21... Rack} Attitude changing means, T...
Binding tape.

Claims (1)

[Claims] 1. A binding device that binds an object by holding the cut end of the binding tape with a holding means and pressing the object against the binding tape pulled out between the free end of the binding arm, in which the object is held against the object. A driving means for advancing and retracting the binding arm, and a rotary wheel that is provided with the binding arm so as to be swingable on the driving means and rotates as the driving means moves forward and backward, and the rotation of the rotary wheel swings the binding arm. A combination of the forward and backward movement of the binding arm by the driving means and the rocking movement of the binding arm by the swinging means moves the tip of the binding arm to draw out the binding tape and move it to the object to be bound. An automatic binding device characterized by winding, crimping, and cutting.