JPH0471766B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a binding device for binding objects to be bound with a binding tape.

(Prior art) A conventional binding device disclosed in Japanese Utility Model Application Publication No. 57-6704, for example, has a binding arm on a base that can be raised and lowered, and a tape gripper is also provided, and a tape grip is provided along the binding arm. The end of the tape pulled out from the tip of the binding arm is gripped by a tape gripping body, and the tape is held in the pulled out state between the gripping body and the tip of the binding side in an upright state.

To bind objects to be bound using this binding device, wrap the tape so that the object to be bundled is pressed against the tape pulled out between the gripper and the tip of the tying arm in an upright position. The adhesive side of the tape wound around the object to be bound is crimped and cut between the tip of the binding arm and the gripper, and the cut end of the cut tape is gripped by the gripper. By raising the binding arm, the tape is pulled out between the gripper and the tip of the binding arm in preparation for the next binding.

In this conventional binding device, when binding objects, when the object is pressed against the tape pulled out between the gripper and the tip of the upright binding arm, the tape sticks to the object. As a result, the tape between the gripper and the object to be bound is pulled by this pressing force, and the cut end of the tape may come off from the gripper.

In addition, in order to prevent the cut end of the tape from coming off the gripper, the object to be bound should be placed in the center (part away from the gripper) of the tape that is pulled out between the gripper and the tip of the upright binding arm. If the cut ends of the tape held by the gripping body are pressed against each other so that no tensile force is applied to the cut ends of the tape, the objects to be bound will become loosely bound and cannot be properly bound.

Therefore, in order to prevent the cut end of the tape from coming off the gripper and to perform good binding, turn the wrist of the hand holding the object against the tape inward while pulling the tape around the object. When the wrapping is wrapped around the entire circumference of the object, the object must be located exactly close to the gripper.

In this way, it takes considerable skill to ensure that the cut end of the tape does not come loose from the gripper and to tie it well, especially when the tape is tied between the gripper and the tip of the tying arm in an upright position. There is a problem in that this work is difficult when the tape is being pulled out in a substantially vertical direction, such as the tape being pulled out between the tapes.

Next, when taking out the bound objects from the binding device, the tape is pulled out between the gripper and the tip of the binding arm in preparation for the next binding. The bound object cannot be taken out to the front because of the obstruction, and must be taken out from the side so as not to interfere with the tape that has been pulled out.

This method of taking out the objects to be bound has no problems when it is done manually or when the objects to be bound are not extremely long. When binding objects of a length of 300 cm, it is often inconvenient to move the objects laterally to take them out.

(Object of the Invention) The present invention allows the binding tape to be pulled out in a substantially horizontal direction before the binding operation, thereby preventing the cut end of the tape from being removed from the gripping body, and facilitating the operation of performing good binding. At the same time, after the binding tape is crimped and cut, the binding tape is not held on the tape crimping means side, so that the bound object that has been bound can be taken out from between the binding arm and the tape crimping means. A binding device is provided.

(Structure of the Invention) In order to achieve the above object, the present invention connects a binding arm to one end of the machine frame via a pair of links so as to be movable between one end and the other end of the machine frame, and the binding arm A pressing member and a cutting blade are provided at the tip of the machine frame, and a movable crimping means including a crimping table and a clamping member is provided at the other end of the machine frame so as to be movable in the same direction as the movement direction of the binding arm. While reciprocating twice between one end and the other end of the machine frame, the pressing member of the binding arm collides with the crimping table of the movable crimping means, and the tape is cut with the cutting blade and moved to the original position. The present invention is further characterized in that a driving means is provided for interlocking the binding arm and the movable crimping means so that the binding arm is moved to the other end of the machine base and the cut end of the tape is gripped by the holding member of the movable crimping means. It is something.

This configuration has the following effects. In other words, the binding arm is connected to one end of the machine frame via a pair of links so that it can move between one end and the other end of the machine frame. The link allows the tip of the binding arm to be lowered, making it possible to pull out the tape to make it substantially horizontal.

A movable crimping means including a crimping table and a clamping member is provided at the other end of the machine frame so as to be movable in the same direction as the movement direction of the binding arm, and the binding arm reciprocates between one end and the other end of the machine frame twice. In the meantime, the pressing member of the binding arm and the crimping table of the movable crimping means are brought into contact with each other, and the tape is cut with a cutting blade and moved to the original position, and the binding arm is further moved to the other end of the machine base to remove the tape. Since a driving means is provided for interlocking the binding arm and the movable crimping means so that the cut end of the movable crimping means is gripped by the holding member of the movable crimping means, the binding arm and the movable crimping means are moved in conjunction with each other in the same direction. When the objects to be bound are bound by the movement of the binding arm, the pressing member of the binding arm and the crimping table of the movable crimping means are brought into contact with each other, and the tape is cut by the cutting blade and moved to the original position, whereby the movable crimping means It becomes possible to create a state in which the tape is not pulled out between the binding arm and the binding arm, and furthermore, the binding arm is moved to the other end of the machine base and the cut end of the tape is gripped by the clamping member of the movable crimping means. By moving the binding arm to one end, the tape can be drawn out approximately horizontally between the movable crimping means and the binding arm.

(Example) Embodiments of the present invention will be described with reference to the drawings.

1 and 2, a binding arm 2 is rotatably attached to the right end of the machine frame 1 via a pair of links 3, 3'. The link 3 located at the front is shorter in length than the link 3' at the rear. At the tip of the binding arm 2, a pressing member 4, a cutting blade 5, and an appropriate number of rollers 6 for guiding the binding tape T are provided. In addition, binding arm 2
A reel arm 7 is fixed to the rear end, and a reel 8 is rotatably supported at the free end of the reel arm 7. One roll of binding tape T coated with adhesive on one side is loaded on the reel 8.

A shaft 10 of the reel 8 is provided with a sulrocket 9, which serves as a pivot shaft 1 between the binding arm 2 and the link 3'.
On 1', a slot locket 9' is connected to an electromagnetic clutch 12.
It is attached via. A chain 13 is spanned between both sprockets 9 and 9'.

Binding arm 2, reel arm 7 and link 3'
The positional relationship between the sprocket 9' and the sprocket 9' is as shown in FIG. When the electromagnetic clutch 12 is ON, the link 3' and sprocket 9' are integrated, and the electromagnetic clutch 12 is OFF.
At this time, the sprocket 9' is free with respect to the link 3'.

The link 3 connects the shaft 1 to the intermediate arm 2a of the binding arm 2.
It is rotatably pivotally connected via 1. Link 3
A gear 15 is integrally attached to the base of the shaft 1.
It is rotatably provided around 6.

The machine frame 1 has a shaft 1 of a gear 17 that meshes with the gear 15.
8 and a shaft 21 of a sprocket 20 which is rotationally driven by an electric motor 19 via a chain 25 are rotatably attached, and both shafts 18 and 21 are connected by three links 22, 23 and 24. . link 3 and gear 15, shaft 16 and link 22,
The positional relationship with 23 and 24 is as shown in the cross-sectional views of FIGS. 4 and 5.

A moving tape pressure bonding means 30 is provided at the other end of the machine frame 1.

The movable pressure bonding means 30 clamps the binding tape T,
It consists of a tape crimping means 40 that provides a space for cutting the binding tape T, and a moving means 50 that moves the movable crimping means 30 in relation to the rotation of the binding arm.

As shown in FIG. 6, the tape crimping means 40 is rotatably connected to a crimping table 42 located above the rear end of a movable frame 41 and a movable frame 41 below the crimping table 42 about an axis 43d. An L-shaped frame 43 having arms 43a and 43b extending forward and upward, a spring means 44 that biases the L-shaped frame 43 backward (clockwise in the drawing), and an arm 43b facing upward of the L-shaped frame 43. An arm 43 that is guided in the vertical direction by a pin 46 and a long groove 47a in front of the movable frame 41 and faces forward of the L-shaped frame 43.
a and a release plate 47 connected by a pin 43c;
It has a tapered surface 48a at the upper end, and a pin 4 at the middle front.
3c, and has an engaging stepped portion 48b that engages with the moving frame 4
1, and a spring means 49 that biases the engaging piece forward (counterclockwise in the drawing).

In the figure, 41a is a recess 41b on the upper edge of the moving frame 41.
It is a roller fixed in front of the Transportation means 50
As shown in FIGS. 5 and 8, the fixed frame 51
a substantially fan-shaped cam plate 53 fixed to a shaft 52 supported by a cam plate 53; a pair of guide rods 54 extending in a direction perpendicular to the shaft 52 and fixed to the fixed frame 51; and a movement guided by the guide rods 54. An abutment element 55 that hangs integrally from the frame 41 and is located within the operating range of the cam plate 53.
and a guide rod 54 between the fixed frame 51 and the movable frame 41
and spring means 56 provided around the periphery. Further, on the shaft 52, there are contacts 57a, 57.
b, 57c and a sprocket 58 are fixed, each contactor is provided so as to contact limit switches LS ₂ , LS ₃ , LS ₄ arranged along the shaft 52, respectively, and the sprocket 58 is connected to the shaft 21.
The rotation of sprocket 59 fixed to chain 6
0.

The operation of the present invention will be explained below.

First, the binding operation begins from the state shown in FIG. In this state, the binding tape T is not held by the movable pressure bonding means 30, and its end _T1 hangs down from the binding end of the binding arm 2. The motor 19 is turned on, and the motor 19 causes the sprocket 20 to move.
However, when rotated 180° clockwise, link 24 also
Rotates 180 degrees, and by the movement of this link 24, gear 1
7, 15 and the link 3 are moved, and the binding arm 2 and tape reel 8 are accordingly rotated forward. At this time, the electromagnetic clutch 12 is magnetically excited, so the link 3', shaft 11', and sprocket 9'
Therefore, rotation of link 3' imparts counterclockwise rotation to sprocket 9', chain 7, and sprocket 9. That is, the binding tape T is given rotation in the unwinding direction.

The rotational drive of the motor 19 rotates the sprocket 58 by 90 degrees via the sprocket 59 and chain 60, as shown in FIG. The 90° rotation of the sprocket 58 rotates the cam plate 53 from the state shown in FIG. 8A to the state shown in FIG. Since the abutting element 55 integrated with the moving frame 41 is biased by the spring on the cam surface of the cam plate, in the state shown in FIG. The abutment element 55 and the moving frame 41 are moved by a distance l to be moved furthest forward (to the left in the drawing).

When the moving frame 41 is in the state shown in FIG. 8B,
The binding arm 2 rotates forward. Then, as shown in FIG. 6, the two collide. First, since the roller 6a descends while contacting the tapered surface 48a of the engagement piece 48, the engagement piece 48 rotates clockwise about the pivot point 48c, and the engagement step 48b of the engagement piece 48 rotates clockwise. The L-shaped frame 43 is disengaged from the pin 43c. Since the L-shaped frame 43 is spring biased clockwise, when the engagement is released, it rotates clockwise and a gap is created between the clamping member 45 fixed to the L-shaped frame 43 and the front wall of the crimping table 42. Clamp the end _T1 of the binding tape.

When the motor 19 continues to drive and the sprocket 20 further rotates 180 degrees, the tip of the binding arm 2 moves to the first position.
As shown in the figure, since it is returned to a lower position by the links 3 and 3', the binding tape T is pulled out approximately horizontally between the movable pressure bonding means 30 and the binding arm 2 with the adhesive surface facing upward. In this state, motor 1
9 stops. In this state, the cam plate 53 is
An additional 90° rotation is applied from the state shown in Figure B.
In this 90° rotation, the surface of the cam surface of the cam plate 53 that is farthest from the center of rotation comes into contact with the abutting element 55, so that the abutting element 55 and the movable frame 41 are located at the rear (on the right side in the drawing). Move to. This moved point is
Since the cam surface of the cam plate 53 is the same within the 180° range, the cam surface is maintained throughout the 180° range of rotation of the cam plate.

Since the tape drawn out between the movable pressure bonding means 30 and the binding arm 2 is approximately horizontal, the object G to be bound can simply be placed on the tape drawn out approximately horizontally, and the tape will be attached to the object G to be bound. It bends to wrap around the object G under the weight of . In this way, since it is only necessary to place the object G on the horizontally pulled out tape, the movable pressure bonding means 30
The relationship between the position and the position on which the object to be bound G is placed can be determined without requiring much skill.
It becomes possible to place the objects G on the horizontal tape without applying any tensile force to the tape and to enable good bundling. Then, when the motor 19 is connected again, the binding arm 2 is rotated forward in the same manner as described above (FIG. 9).
When the sprocket 20 is rotated by 180 degrees, the cam plate 53 is in the state shown in FIG. become. By this,
The binding tape T ₂ around which the object to be bound G is wound is overlapped with the end portion T ₁ of the held binding tape, and the overlapping portion is held between the crimping table 42 and the pressing member 4. Since the pressing member 4 is pressed by the crimping table 42, as the binding arm 2 descends, it is pulled into the binding arm 2 against the spring by the amount of descent, and the roller 6
a and the upper surface of the release plate 47 are in contact with each other, and the cutting blade 5 is located just before cutting the binding tape T on the winding side. Furthermore, when the binding arm 2 descends, the cutting blade cuts the binding tape T, and at the same time, the roller 6a releases the release plate 47.
is pressed down, and the release plate 47 is pressed down via the pin 43c.
The character frame 43 is rotated counterclockwise to release the end T ₁ of the binding tape held between the clamping part 45 of the L-shaped frame 43 and the front wall of the crimping table 42 . Since the pin 43c of the release plate 47 passes over and engages with the engagement step 48b of the engagement piece 48, the L-shaped frame 43 maintains its counterclockwise rotational position.

In this way, the cutting of the binding tape T is completed with the end T ₁ of the binding tape released, and the binding arm 2 is returned to the position shown in FIG. 1 via the links 3 and 3'. In this state, the tape is not pulled out between the movable pressure bonding means 30 and the binding arm 2, and it becomes possible to take out the bound object G that has been bound to the front side. And the first
When the binding arm 2 and movable crimping means 30 return to the state shown in the figure, the motor 19 is turned off and one step of the binding operation is completed.

FIG. 10 shows another embodiment of the present invention,
Identical members or members that operate in the same manner will be designated by the same numbers and their descriptions will be omitted. This embodiment differs from the previous embodiment in that an engagement piece 48 is rotatably attached to the moving frame 41 at approximately the center, and a pin 4 connecting the L-shaped frame 43 and the release plate 47
3c, the engagement step portion 48b is provided facing downward and rearward so as to abut and engage with it from the front toward the rear. The cam plate 53 is rotatable with respect to the shaft 52 so that its angle can be adjusted with respect to the shaft 52, and a fixed plate 60 fixed to the shaft 52 has an arcuate groove 60.
1, and a bolt 62 inserted through this arcuate groove 61.
The cam plate 53 and the fixed plate 60 are thereby fixed.
Therefore, by loosening the bolt 62, the angle of the cam plate 53 can be adjusted within the length range of the arcuate groove.

Next, the operation will be explained based on the electric control circuit that controls the operation.

FIG. 11 is a sequence control circuit diagram of an embodiment according to the present invention, and FIG. 12 shows limit switches LS ₂ , LS ₃ , LS ₄ in the circuit diagram connected to contacts 57a, 57b, 57c provided on shaft 52. FIG. 4 is a diagram illustrating an operating state.

First, the binding tape T is stretched between the binding arm 2 and the tape pressure bonding means 40. The limit switch LS ₁ installed below the mounting table 1a on the machine frame 1 is activated when the mounting table 1a is pushed down by the object G to be bound and the mounting table 1a is lowered, and the coil of the relay _R1 is activated. is excited, the A contact of relay _R1 is closed, current flows, and motor 19 rotates in the forward direction. Also, since the A contact of relay _R1 is closed, current flows to limit switch _LS5 , which excites relay _R5 and closes the A contact of _R5 . motor 19
As the sprocket 20 and link 2 rotate,
4, 23, 22 and gears 17, 15, the binding arm 2 begins to rotate forward, and at the same time, the limit switch _LS2 is activated via the sprockets 20, 59, 58. This limit switch LS ₂
When turned ON, the coil of relay R ₂ is excited, the A contact of relay R ₂ is closed, a current flows, the electromagnetic clutch CL is activated, and the tape reel 8 is rotated in the unwinding direction while binding the object G. Wrap with tape T. Since the limit switch LS ₂ is in operation only while the contact 57a rotates 90 degrees, that is, while the sprocket 59 rotates 180 degrees, after the binding arm 2 rotates forward and winds the object G, The binding tape is polymerized and cut to bind the objects G to be bound. At this point, limit switch LS ₂ is turned OFF and the electromagnetic clutch is released. Next is limit switch LS ₃
turns on, energizes the coil of relay R ₃ , closes the A contact of relay R ₃ , and drives the motor 19 in forward rotation.
The binding arm 2 begins to rotate backward.

This limit switch LS ₃ has contact 57b at 90°.
While rotating, that is, the sprocket 59 further
It continues to operate while rotating 180 degrees, and when the binding arm 2 returns to its original position, it is turned off, and the A contact of relay _R3 opens to stop the motor 19. When the bound object G is lifted, limit switch LS ₁ is turned OFF, but limit switch LS ₅ is turned OFF.
The ON state continues, relay _R5 is energized, and the A contact of relay _R5 is closed, so it is self-held. I accidentally turned on the limit switch here.
Even if LS ₄ is activated, as long as the coil of relay R ₅ is energized, the B contact of relay R ₅ is open, so the motor 19 will not be driven. Therefore, if limit switch LS ₅ is activated when the objects to be bound are taken out from the binding device using a detector such as a phototube, limit switch LS ₅ will be in the OFF state due to the B contact, and the coil of relay R ₅ will be turned off. It is demagnetized and the A contact of _R5 opens. When the limit switch LS ₄ is activated, the motor 19 is driven to rotate in the normal direction.
Therefore, the binding arm 2 will not rotate forward unless the object G to be bound is taken out. In addition, if some mistake occurs while the limit switch LS ₂ is operating and the object G is placed on the mounting table 1a, the relay R ₁ is set to prevent the binding arm 2 from moving forward when the object G is lifted. Since the B contact of the relay R2 is closed and the A contact of the relay _R2 is also closed, the reversal circuit of the motor 19 is activated and the binding arm 2 can be returned to its original position. As described above, this device has a built-in malfunction prevention circuit to ensure work safety. Next, when limit switch LS ₄ turns ON, the coil of relay R ₄ is energized, and the A of relay R ₄ is turned on.
After the contacts are closed and the object to be bound has been removed, the coil of relay _R5 is demagnetized and the B contact of relay _R5 is closed, so the motor 19 is driven in the normal rotation and the same operation as above is performed. The binding arm 2 begins to rotate forward. Since this limit switch LS ₄ operates while the contactor 57c rotates 180 degrees, that is, while the sprocket 59 rotates 360 degrees, the binding arm 2 rotates forward, collides with the moving frame 41, and removes the binding tape. After the end T ₁ of is clamped in the movable frame 41, the binding arm 2 is rotated rearward so that the binding tape T is stretched between the tape pressure bonding means 40 and the binding arm 2. In this state, limit switch LS ₄ is turned OFF, stopping motor 19,
The preparation stage for binding is completed.

(Effects) With the present invention configured as described above, the binding tape is pulled out approximately horizontally between the movable pressure bonding means and the binding arm, thereby facilitating the binding work, thereby preventing the end of the tape being held from coming off. Furthermore, when the binding is completed, the tape is prevented from being pulled out between the movable crimping means and the binding arm, making it easy to take out the bound items. This can improve the efficiency of bundling.

[Brief explanation of drawings]

FIG. 1 is a side view of the device according to the present invention, FIG. 2 is a front view of the device according to the present invention, FIG. 3 is an enlarged sectional view of the binding arm and the first link, and FIG. 4 is the binding arm and the second link. Fig. 5 is an enlarged horizontal plan view showing the relationship between the drive parts within the machine frame, Fig. 6 is an enlarged side view showing the state before the binding tape is clamped within the moving frame, and Fig. 7 is an enlarged sectional view of the link. The figure is an enlarged side view showing the state in which the binding arm and the movable crimping means collide, FIGS. 8A to 8C are enlarged side views showing the rotating state of the cam in the moving means, and FIG. FIG. 10 is a side view showing another embodiment of the present invention in which the binding arm and movable crimping means are in abutting state; FIG.
FIG. 1 is an electrical control circuit diagram of the device according to the present invention.
FIG. 2 is a diagram illustrating the operating state of the limit switch in the circuit diagram. 1 - machine frame, 2 - binding arm, 3, 3' - link,
8-tape reel, 19-motor, 30-moving crimping means, 40-tape crimping means, 50-moving means, 41-moving frame, G-object to be bound.

Claims (1)

[Claims] 1. A binding arm is connected to one end of the machine frame via a pair of links so as to be movable between one end and the other end of the machine frame, and a pressing member and a cutting blade are provided at the tip of the binding arm, A movable crimping means including a crimping table and a clamping member movable in the same direction as the moving direction of the binding arm is provided at the other end of the frame, and while the binding arm reciprocates between one end and the other end of the machine frame twice. Then, the pressing member of the binding arm and the crimping table of the movable crimping means are brought into contact with each other, and the tape is cut by the cutting blade and moved to the original position.Then, the binding arm is moved to the other end of the machine base and the tape is cut. A binding device comprising a drive means for interlocking the binding arm and the movable crimping means so that the cut ends are gripped by the clamping members of the movable crimping group.