JPH0356490Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a binding device for binding objects to be bound using binding tape. More specifically, the present invention relates to an automatic bundling device that allows a worker to take out the bundled items.

(Prior art) Conventionally, the tape has a binding arm pivotably attached to one side of the base so that it can be raised and folded, and a tape holding block disposed on the other side of the base, and the tape holding block is provided at the tip of the binding arm. A binding device is known in which the tape guide block and the tape holding block abut each other to wrap and bind objects to be bound with tape.

This type of binding device pulls out a binding tape attached to a tape reel, applies the binding arm to the tape stretched between a guide block and a holding block, and tilts the binding arm. , objects to be bound are bound by abutting the guide block and the holding block.

By the way, in the conventional binding device, when the guide block and the holding block collide,
The cut end of the tape held by the holding block is released, and then the newly formed cut end of the tape is immediately held. (Refer to Japanese Patent Publication No. 57-40009.) In other words, after the binding arm is tilted and the tape is wound around the object to be bound (binding process), when the binding arm is raised, the holding block and guide block ( Because the structure was such that the tape was stretched between the tying arm) (preparation process), it was not possible for the worker to take out the bundled items bound with tape, and the operator had to hold the bundled items horizontally. It was said that it had to be taken out from the direction.

For this reason, this type of binding device is suitable for short items such as vegetables, but is inconvenient for binding long items such as industrial products or electric wires bundled in a ring shape.

(Problems to be Solved by the Invention) In view of the above circumstances, the present invention prevents the binding tape from being held on the tape clamping means side after the binding tape is crimped and cut, so that the objects to be bound that have already been bound can be moved between the tape guide block and the tape. It is an object of the present invention to provide an automatic binding device that can be taken out from between a holding block and a holding block.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an automatic binding device in which a tape guide block of a binding arm collides with and separates from a tape holding block by means of a motor-driven transmission means, which comprises: The block has a pressing member and a cutting blade, and the holding block has a tape clamping means and a cam mechanism that moves the tape clamping means to first and second operating positions in conjunction with the movement of the binding arm. The tape clamping means has a crimping table facing the pressing member, a clamping member that clamps the cut end of the tape hanging down along the front surface of the crimping table between the crimping table and the crimping table, and an engaging piece that is driven in a direction to press the clamping member against the crimping table due to collision with the guide block at the first operating position; and an engaging piece that engages with this engagement piece and collides with the guide block at the second operating position. and a release plate that drives the engagement piece in a direction to separate the clamping member from the crimping table, and further includes a plurality of switches that operate in response to the detection of the object to be bound and the cam position of the moving means, It is characterized by the provision of a control device that controls starting and stopping of the motor.

(Function) With this configuration, when the motor is driven, the guide block moves toward the holding block, and the clamping means moves to the first operating position and hangs from the guide block. The tape enters between the crimping table and the clamping member. Thereafter, when the guide block collides with the engagement piece, the clamping member moves in the direction of pressure-bonding, clamps the binding tape, and retreats the guide block. As a result, the tape is stretched between both blocks, and one reciprocating movement of the binding arm is completed by the control means.

Next, when the object to be bound is placed on the mounting table, the motor is driven by a switch that detects this, and the binding arm reciprocates once again.

As a result, the objects to be bound are wound and bound by the tape, and at the second operating position, the cutting blade cuts the tape, and the guide block collides with the release plate, moving the engagement piece in the direction of separating it from the crimping table. As a result, the tape is separated from the clamping means, and furthermore, when the guide block is retracted, the binding tape is not stretched between the two blocks.

(Example) In FIGS. 1 and 2, a binding arm 2 is rotatably attached to one end of a machine frame 1 via a pair of links 3, 3'. Here, the link 3 located at the front is made shorter in length than the link 3' at the rear, so that the tape can be stretched horizontally as much as possible, which will be described later. At the tip of the binding arm 2, there is a pressing member 4, a cutting blade 5, and a binding tape Ta.
A guide block 10 is provided with a suitable number of rollers 6 for guiding. Furthermore, a reel arm 7 is fixed to the rear end of the binding arm 2.
A tape reel 8 is rotatably supported at the free end of the reel arm 7. One roll of binding tape Ta coated with adhesive on one side is attached to the tape reel 8.

A sprocket 9 is provided on the shaft 14 of the tape reel 8, and serves as a pivot shaft 1 for connecting the binding arm 2 and the link 3'.
A sprocket 9' is mounted on the sprocket 1' via an electromagnetic clutch 12. And both sprockets 9,
A chain 13 is spanned between 9'.

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

The link 3 is rotatably attached to the intermediate arm portion 2a of the binding arm 2 via a shaft 11. A gear 15 is integrally attached to the base of the link 3 and is rotatably provided around a shaft 16.

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 rotatably driven by an electric motor 19 via a chain 25 are rotatably attached, and both shafts 18, 21 are connected by three links 22, 23, 24.
Link 3 and gear 15, shaft 16 and links 22, 2
The positional relationship with 3 and 24 is as shown in the sectional views of FIGS. 4 and 5.

A tape holding block 30 is provided at the other end of the machine frame 1. This holding block 30 is equipped with a tape clamping means 40 that clamps the binding tape Ta and provides a space for cutting the binding tape Ta, and has a clamping position that cooperates with the guide block 10 to clamp the cut end _T1 of the binding tape Ta. It is also movable by a moving means 50 so that it can take a binding position for binding objects to be bound.

The tape holding block 30 is shown in FIG.
a crimping table 42 located above the rear end of the moving frame 41;
An L-shaped frame 43 is rotatably connected to a movable frame 41 below a crimping table 42 around a shaft 43c, and has arms 43a and 43b extending forward and upward. ), a clamping member 45 provided on the arm 43b facing upward of the L-shaped frame 43, and a pin 46 and a long groove 47a in front of the moving frame 41, which are guided in the vertical direction by a pin 46 and a long groove 47a, and Arm 43 facing forward of L-shaped frame 43
a and a release plate 47 connected by a pin 47b;
It has a tapered surface 48a at the upper end, and a pin 4 at the middle front.
7b, and has an engaging stepped portion 48b that engages with the moving frame 4.
It consists of an engaging piece 48 which is rotatably pivoted around a shaft 48c below 1, and a spring means 49 which biases the engaging piece forward (counterclockwise in the drawing). The pin 47b is fixed to the release plate 47, passes through the L-shaped frame 43, and engages with the engagement piece 48.

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 shaft 52; a pair of guide rods 54 extending in a direction perpendicular to the shaft 52 and fixed to a fixed frame 51;
An abutment element 55 is integrally installed vertically from the moving frame 41 guided by the cam plate 53 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.

Furthermore, contacts 57a, 57b, 5 are provided on the shaft 52.
7c and sprocket 58 are fixed,
Each contact is provided to contact limit switches LS ₂ , LS ₃ , and LS ₄ arranged along the shaft 52 , and the sprocket 58 transmits the rotation of a sprocket 59 fixed to the shaft 21 through a chain 60 . It is set up so that Furthermore, in order to drive this sprocket 58 one revolution, the sprockets 20 and 59 must be rotated two times.

The limit switch _LS5 is provided on the top surface of the take-out guide frame 31 in the bundle take-out passage. This limit switch LS ₅ has the function of controlling the start of the preparation process for stretching the tape between both blocks 10 and 30, as will be described later. The switch is turned on by contacting the actuator A (here, formed by bending a plate) of the limit switch LS ₅ with the bundle wound and bound with tape.

Next, the operational relationship between the moving means 50, the guide block 10, and the holding block 30 will be explained.

First, as shown in FIG. 1, with the cut end _T1 of the binding tape hanging down from the guide block 10,
When there is a command from the control device (operation of the limit switch LS ₅ that detects that the object to be bound G has been taken out), the motor 19 starts and the transmission devices 3, 3',
11 to 25 are actuated to rotate the binding arm 2 and move the guide block 10 forward.

By driving this motor 19, the sprocket 20
When the block rotates 180° clockwise, link 24, gears 17, 15, and link 3 are moved to move guide block 1.
Advance 0 once.

At this time, since the electromagnetic clutch 12 is demagnetized, it is separated from the link 3', the shaft 11', and the sprocket 9, and no rotational force is applied to the tape reel 8.

Since the outer diameter of the sprocket 58 is twice the outer diameter of the sprocket 59, the sprocket 58 is rotated 90 degrees by rotating the sprocket 20 by 180 degrees by the rotational drive of the motor 19.

This rotates the cam plate 53 from the state shown in FIG. 8A to the state shown in FIG.

Therefore, the abutment element 55 and the movable frame 41 are brought to the frontmost position and moved by a distance l, and the holding block 30 becomes the first operating position.

This position is shown in FIG.
Since a gap is created between the guide block 10 and the clamping member 45, the tape hanging down from the guide block 10 enters into this space.

This position of the holding block 30 remains approximately at the normal position until the cam plate 53 is rotated a further 90°.

However, the holding block 30 of the guide block 10
As the roller 6a of the guide block comes into contact with the tapered surface 48a of the engagement piece 48, the engagement piece 48 rotates clockwise about the pivot point 48c, and the engagement piece 48 rotates clockwise about the pivot point 48c. Engagement stepped portion 48b
The engagement with the pin 47b penetrating the L-shaped frame 43 is released.

Since the L-shaped frame 43 is biased clockwise by a spring, when the engagement is released, it rotates clockwise and the L-shaped frame 43 rotates clockwise.
The cut end T ₁ of the binding tape is held between the holding member 45 fixed to the character frame 43 and the front wall of the crimping table 42 .

When the motor 19 continues to be driven and the sprocket 20 is further rotated by 180 degrees, the cam plate 53 is further rotated by 90 degrees, resulting in the state shown in FIG. 8C. For this reason, transportation means 5
0 retreats to the original position and moves the guide block 1 without touching the roller 6a to the tip of the engaging piece 48.
0 moves backward.

Then, the guide block 10 and the holding block 30
When the tape is stretched horizontally between the two, the motor 19 is stopped by the operation of the limit switch of the control device.

After this tape stretching step is completed, the objects G to be bound are placed on the tape.

Next, the placement of the object G to be bound is detected by the operation of the limit switch LS ₁ of the control device, and the motor 1 is activated again.
9 is activated and the guide block 10 moves to the holding block 3.
Move forward towards 0.

This causes the sprocket 20 to rotate an additional 180 degrees while the cam plate 53 rotates 90 degrees, but since the cam diameter remains constant as shown in FIG. It is stationary in the state (stop position).

In this operating position of the holding block 30, the guide block 1 is rotated by 180° of the sprocket 20.
0 moves forward while winding the tape around the object G.

When the guide block 10 approaches the holding block ₃₀ and comes to the front position shown in _FIG . It is crimped by. Thereafter, the tape is cut by the cutting blade 5.

As a result, the objects G are wound and bound to complete the binding object G. Furthermore, the guide block 10 approaches the seventh
As shown in the figure, the roller 6a comes into contact with the release plate 47 and pushes it down.

Therefore, due to the descent of the pin 47b, the L-shaped frame 4
3 rotates counterclockwise, the clamping member 45 separates from the crimping table 42, and the cut end of the tape falls.

When the motor 19 continues to drive and the sprocket 20 rotates 180 degrees to cause the guide block 10 to move backward, the cam plate 53 rotates 90 degrees from the state shown in FIG. 8C. In this case, since the cam plate 53 has the same diameter, the moving means 50 does not change and remains at its original position.

Therefore, the cut end of the tape hanging down from the guide block 10 is attached to the clamping means 40 of the holding block 30.
The guide block 10 is retracted without being clamped by the motor 1, and the limit switch of the control device is activated.
9 and return the guide block 10 to its initial position.

After this, the guide block 10 and the holding block 30
Since there are no obstacles between them, the objects to be bound can be taken out forward.

Completion of removal of the objects to be bound can be confirmed by limit switch _LS5 of the control device.

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

FIG. 11 is a casing control circuit diagram of an embodiment according to the present invention, and FIG. 10 shows limit switches LS ₂ , LS ₃ , and LS ₄ in the circuit diagram, which are connected to contacts 57a, 57b, and 57c provided on shaft 52. It is a figure explaining the state which operates by.

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 under the mounting table 1a on the machine frame 1 is activated when the mounting table 1a is pushed down by the object to be bound G and the mounting table 1a is lowered thereby, and the relay R ₁ is activated. The coil is energized, the A contact of relay _R1 is closed, current flows, and the 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, gears 17, 15, the binding arm 2 begins to rotate forward, and at the same time, the limit switch is activated via the sprockets 20, 59, 58.
LS ₂ works. This limit switch LS ₂ is ON
When this happens, the coil of relay _R2 is energized, and the relay
Close the A contact of _R2 , current flows, and the electromagnetic clutch
CL is activated and the tape reel 8 is rotated in the unwinding direction while the object G to be bound is wound with the binding 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 wraps 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, limit switch ₃ turns on, energizes _{the coil of relay R 3 ,} and
When the contact closes, the motor 19 is driven in the forward direction, and the binding arm 2
begins to rotate backwards.

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 here, the limit switch LS ₁
is turned OFF, but limit switch LS ₅ continues to be ON, relay R ₅ is energized, and the relay
Since the A contact of _R5 is closed, it will be self-held. Even if the limit switch LS ₄ is activated by mistake, the motor 19 will not be driven as long as the coil of the relay R ₅ is energized because the B contact of the relay R ₅ is open. Therefore, if we use a detector such as a phototube to activate the limit switch LS _{5 when the objects to be bound are taken out from the binding device, the limit switch LS 5 will} actuate because it is a B contact.
It becomes OFF state, the coil of relay _R5 is demagnetized,
The A contact of _R5 opens. And limit switch LS ₄
When the motor 19 is operated, 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 is turned on, the coil of relay R ₄ is energized, the A contact of relay R ₄ is closed, and after the object to be bound is removed, the coil of relay R ₅ is demagnetized. Since the B contact of relay _R5 is closed, the motor 19 is driven to rotate in the normal direction, and the binding arm 2 begins to rotate forward in the same manner as described above. This limit switch LS ₄ operates while the contact 57c rotates 180°.
That is, while the sprocket 59 rotates 360°,
When activated, the binding arm 2 rotates forward, collides with the moving frame 41, and connects the end _T1 of the binding tape to the moving frame 4.
After clamping it in 1, rotate the binding arm 2 backward,
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, motor 19 is stopped, and the binding preparation stage is completed.

Once this preparation process is complete, the limit switch
LS ₄ is turned OFF, motor M is stopped, and the bundling device enters the standby state. Above, an example of binding objects to be bound with one binding device was shown as the first embodiment of the present invention, but when binding long objects to be bound,
It is also possible to arrange an appropriate number of binding devices in parallel and bind objects to be bound at a plurality of locations with tape at intervals in the longitudinal direction.

Next, as a second embodiment, a sequence control circuit in which a timer is provided in the sequence circuit in the first embodiment will be described with reference to FIG.

In this sequence control circuit, timer T
is connected through the snap switch SS, and the time-limited operation B contact Tb is connected in parallel with the limit switch _LS5 .

Therefore, the preparation process is started only after the limit switch LS ₅ is turned ON after the set time of the timer T has elapsed, that is, when the bundled articles are taken out from the mounting table 1a.

During the set time, the time-limited operation b contact Tb is closed, and the a contact of relay _R5 is maintained in a closed state. Therefore, the b contact of relay _R5 is open and timer T ensures that motor M is not operated.

After the set time has elapsed, time-limited operation b contact
Tb is open and the motor will therefore be restarted by actuation of the limit switch _LS5 .

With this configuration, the timer T provides a minimum amount of time for the removal of the bundled items, and the preparation process starts only on the condition that the limit switch LS ₅ is activated, that is, the bundled items are removed. Therefore, when the series of bundling work is completely automated, it becomes possible to synchronize the timing with the device that takes out the bundled items, and it is also possible to maintain the stopped state of both blocks 10 and 30 even in the event of a mistake in taking out the device. It is possible to prevent accidents during full automation.

Next, as a third embodiment, a sequence control circuit provided with a timer circuit different from the sequence circuit in the second embodiment will be described with reference to FIG.

In this sequence control circuit, timer T
The time-limited operation B contact Tb is connected in series to the limit switch _LS5 .

Therefore, in addition to the limit switch _LS5 , which operates after confirming that the bundled object has been taken out from the mounting table 1a, the preparation process for tensioning the binding tape is started by opening and closing the B contact Tb, which is a time-limiting operation of the timer T. ing.

That is, within the set time of the timer T, the time-limited operation b contact Tb is closed and the self-holding by the relay _R5 is maintained. Therefore, the b contact of relay _R5 is opened and motor M does not operate. At this time, the self-holding is canceled by the operator taking out the bundle and activating the limit switch _LS5 within this set time, the motor M is restarted, and the preparation process is started.

Further, after the set time has elapsed, the time-limited operation b contact Tb is opened even during the work of taking out the bundled object, the motor is restarted, and the preparation process for stretching the binding tape is started.

With this configuration, the skilled person who performed the bundling work according to the first and second embodiments is familiar with the bundling work process, so that he or she can perform the bundling work according to the worker's own decision without having to use the LS ₅ to confirm the removal of the bundled items. You can work according to the set time. In this sequence control circuit, a timer T operates to release the self-holding circuit after a set time, and the preparation process can be started.

That is, even during the work of taking out the bundled items, when the set time of the timer has elapsed, the guide block 10 moves forward to perform the preparation process for stretching the binding tape Ta.

Therefore, if the timer setting time is set shorter than the work time for removing the bundled items, the guide block 1 will be activated by restarting the motor M after confirming the removal of the bundled items.
The preparation process is started earlier than in the case where 0 moves forward. Therefore, skilled workers should use timer T.
By arbitrarily adjusting the set time, it is possible to shorten the cycle time of the entire bundling operation, thereby increasing work efficiency.

(Effects of the invention) Since the present invention has the configuration described above, after the binding tape is crimped and cut, the binding tape is not held on the tape holding block side, and the binding tape is not stretched between both blocks, so that the winding is prevented. The bound objects can be easily taken out from the front side.

In addition, with this invention, the control device can control the drive of the motor for each reciprocating movement of the binding arm, and by detecting the loading and unloading of objects to be bound, the operation of the device progresses in accordance with the worker's work, which prevents work errors. Safety can also be guaranteed.

Furthermore, the device of the present invention prevents timing adjustment with other devices and damage to the device due to malfunction of the other device when it is decided to use another device to take in and out the objects to be bound and the bundled objects after binding. Since this can be prevented, it has high practical value as an automatic bundling device that can be applied to fully automate a series of bundling operations.

[Brief explanation of the drawing]

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 first link. 2
FIG. 5 is an enlarged cross-sectional view showing the relationship between the drive parts in the machine frame, FIG. 6 is an enlarged side view showing the state before the binding tape is held by the tape holding means, and FIG. The figure is an enlarged side view showing the state in which the guide block and the holding block collide, FIGS. 8A to 8C are enlarged side views showing the rotating state of the cam in the moving means, and FIG. 10 is a diagram illustrating the operating state of the limit switch of the device of the present invention, FIG. 11 is a sequence control circuit diagram as a first embodiment of the device of the present invention, and FIG. 12 is a diagram illustrating the operating state of the limit switch of the device of the present invention. FIG. 13 is a sequence control circuit diagram as a second embodiment of the apparatus according to the present invention, and FIG. 13 is a sequence control circuit diagram as a third embodiment of the apparatus according to the present invention. 2... Binding arm, 8... Tape reel, 10...
Guide block, 30... Holding block, 40...
Tape clamping means, 19... motor (driving means),
Ta: Binding tape, T ₁ : Cut end of binding tape, G: Object to be bound.

Claims (1)

[Claims for Utility Model Registration] A binding arm carrying a tape reel is rotatably attached to one end of the machine frame via a pair of links, and the binding tape from the tape reel is attached to the tape at the tip of the binding arm. Automatic binding in which items are suspended from a guide block and are brought into contact with and separated from a tape holding block provided at the other end of the machine frame using a motor-driven transmission means to wrap and bind objects to be bound with binding tape. In the device, the guide block has at least a pressing member and a cutting blade, and the holding block moves the tape clamping means in first and second motions in conjunction with the movements of the tape clamping means and the binding arm. a cam mechanism moving means for moving the tape to a position, and the tape clamping means has a crimping table facing the pressing member, and a cut end of the tape hanging down along the front surface of the crimping table between the crimping table and the crimping table. a clamping member to be clamped; an engaging piece that is driven in a direction to press the clamping member against the crimping table due to collision with the guide block in the first operation position; It has a release plate that drives the engagement piece in the direction of separating the clamping member from the crimping table by colliding with the guide block at the position, and further includes a release plate that drives the engagement piece in a direction to separate the clamping member from the crimping table by collision with the guide block, and further includes a release plate that drives the engagement piece in a direction that separates the clamping member from the crimping table by collision with the guide block. An automatic bundling device comprising a plurality of actuated switches and a control device for controlling starting and stopping of a motor.