JPH0817274A - Wire material twisting device - Google Patents

Abstract

PURPOSE:To eliminate need of locking operation by man's hand, prevent removal of a bobbin 26 by failure of locking securely, reduce actuation stop time of a device from bobbin replacement till restarting, and improve work efficiency. CONSTITUTION:A recessed place 38a is provided in a handle 38 to install/remove a bobbin 26 to/from a flyer 28 of a disc 20, and a housing 46 to contain a pin 44 to protrude to the recessed place 38a is provided. The pin 44 is guided between a locking position to protrude to the recessed place 38a, and a non-locking position, and it receives a deflecting force from a spring member toward the locking position. A contact 32 is provided close to an outer edge of the disc 20 to get in contact with the pin 44 at the non-locking position. As the contact 32 gets in contact with the pin 44 at the non-locking position by rotation of the disc 20, the pin 44 protrudes into the recessed place 38a in the handle 38, thereby loosening of the handle 38 can be prevented automatically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire rod twisting device suitable for use in iron wire armor of cables.

[0002]

2. Description of the Related Art Directly buried cables installed in the ground or the seabed are generally armored like iron wires for the purpose of preventing external damage. A wire twisting device is used for such iron wire armor. FIG. 2 is a schematic view showing a part of a conventional wire twisting device. In the conventional wire twisting apparatus, as shown in FIG. 2A, a large number of flyers 2 are arranged in the circumferential direction on each of the plurality of fryer disks 1. A bobbin 4 around which an iron wire 3 as an armor material is wound is rotatably supported by each flyer 2 via pivots 5a and 5b. The iron wire 3 of each bobbin 4 passes through the supply port 2a of the fryer 2 and, in accordance with the rotation of the fryer disc 1,
Guided by a cable (not shown) fed through the center of the disk, the iron wire 3
Is wound in a spiral.

Each bobbin 4 needs to be replaced with a new bobbin 4 on which the iron wire is wound when the iron wire wound on the bobbin 4 is exhausted. Therefore, each bobbin 4 is detachably arranged on the fryer 2. There is. For this attachment / detachment, one pivot 5a of each bobbin 4 comprises a pintle 5a having a rotary operation tightening handle 6 provided at one end. Each pintle 5a is threadedly engaged with the fryer 2 and extends therethrough into the corresponding bobbin 4. Therefore,
By rotating the handle 6, the pintle 5a screwed onto the fryer 2 can be moved in the axial direction thereof. As a result, the pintle 5a can be projected into or retracted from the bobbin 4, and the bobbin 4 can be attached or detached.

By the way, unnecessary rotation of the handle 6 due to vibration or the like causes unnecessary loosening of the pintle 5a, which may cause the bobbin 4 to drop from the fryer 2.
To prevent this, a lock mechanism 7 is provided in association with the handle 6. This locking mechanism 7 is shown in FIG.
As shown in (b) and FIG. 2 (c), a tubular guide member 7b fixed to each fryer 2 via a bracket 7a is provided. An outer cylinder member 7c is slidably fitted to the guide member 7b, and the outer cylinder member 7c includes:
A lock pin 7d penetrating this and protruding from the end of the guide member 7b is fixed. Due to the biasing force of the compression coil spring 7e arranged in the guide member 7b, the lock pin 7d has a large number of recesses formed in the outer periphery of the handle 6 in an aligned manner, as shown in FIG. 2 (b). It is directed to a projecting position that can engage one of the 6a. Further, the outer cylinder member 7c is formed with an L-shaped groove 7f for guiding the lock pin 7d between the protruding position shown in FIG. 2 (b) and the retracted position from the recess 6a. A pin 7g projects from the guide member 7b to 7f.

Therefore, by rotating the outer cylinder member 7c while pulling it to the left in the figure, the pin 7g can be engaged with the engaging portion 7h of the groove 7f, and the lock pin 7d can be recessed. It can be locked at the exit position from 6a. In this state, the handle 6 is used to attach and detach the bobbin 4.
Can be rotated. Further, by rotating the outer cylinder member 7c in one direction from the locked state to release the pin 7g from the locking portion 7h of the groove 7f, the lock pin 7d is projected into the recess 6a of the handle 6 and the handle 6 is locked. The rotation can be prevented, and thus the bobbin 4 can be reliably prevented from falling off the fryer 2.

[0006]

However, in the conventional wire twisting apparatus having the lock mechanism, the bobbin 4 is used.
When replacing the bobbin 4 after tightening the handle 6 after tightening the handle 6 to a predetermined position, the bobbin 4 for which the tightening of the handle 6 has been completed is removed. In order to reliably prevent the above, it is necessary to manually operate the lock mechanism 7 to the lock position of the handle 6. Further, in the wire rod twisting device, since a plurality of flyer discs 1 provided with a large number of flyers 2 are used in combination, the number of bobbins 4 is as large as 50 to 60, and moreover, each bobbin has Since the wire rods are used almost evenly, a large number of bobbins require intensive replacement at one time. Therefore, in the wire rod twisting device having the conventional lock mechanism, it is necessary to individually operate a large number of lock mechanisms 7 to the lock position, which not only causes a reduction in work efficiency, but also overlooks the operation to the lock position. There is. Such an oversight may cause the bobbin 4 to drop off. Therefore, an object of the present invention is to automate the locking operation of the tightening handle for rotating operation for replacing the bobbin in the wire rod twisting device.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is designed to rotate a fryer disc, a fryer supported by the fryer disc, and a bobbin wound with a wire rod on the fryer so as to be attached and detached. In a wire twisting device provided with a tightening handle to be operated, a recess is provided in the tightening handle, and a housing for accommodating a pin protruding into the recess to prevent rotation of the tightening handle is provided. A guide groove for receiving the pin is formed in the housing, and the guide groove is provided between a locked position that allows the pin to project into the recess and an unlocked position that locks in the retracted position from the recess. Allow movement. In connection with the pin, a spring member is provided for imparting a biasing force to the pin toward the locked position, and when the fryer disc rotates, it contacts the pin in the unlocked position near the outer edge of the fryer disc. A contact is provided to unlock the pin.

[0008]

In the wire twisting device according to the present invention, when the bobbin is replaced, the pin of the housing is locked at the unlock position of the guide groove, and the pin is at the retracted position of the tightening handle. Is held. Therefore, the tightening handle can be freely rotated, and after the bobbin replacement work, the tightening handle is tightened to a predetermined position. After that, the device is restarted without manually operating the individual pins to the unlocked position, and when the fryer disc starts rotating, the contact provided near the outer edge of the fryer disc is accompanied by the rotation of the fryer disc. The child, in turn, automatically contacts the pin in the unlocked position. The pins in contact with the contacts are sequentially unlocked at the unlocked position, and due to the biasing force of the spring member,
It is moved to a locked position that allows it to project into the recess. As a result, the pin automatically projects into the recess of the tightening handle and the loosening of the tightening handle is automatically prevented.

[0009]

The present invention will be described in detail below with reference to the illustrated embodiments. FIG. 1 is a schematic view showing a lock mechanism of the present invention. Prior to this, an overall description of a wire rod twisting device according to the present invention will be described with reference to FIG. In the wire rod twisting device 10 according to the present invention, the cable 14 delivered from the sending device 12 passes through the pulling device 16 and then the winding device 18.
It is provided between the delivery device 12 and the tensioning device 16 for winding an iron wire around the cable 14 to prevent its damage when it is wound up. In the illustrated example, two sets of wire rod twisting devices 10 are arranged in series, and, for example, when the respective drive devices 19 rotate in opposite directions,
The iron wire is wound in the opposite direction in the right or left winding.

FIG. 4 is a front view showing a part of a wire rod twisting apparatus 10 according to the present invention. Each wire rod twisting device 10 includes a large number of fryer disks 20 coaxially arranged with each other, as shown in FIG. As shown in FIG. 4, each of the fryer discs 20 is rotatably supported by a guide device 22 provided on both lower sides of the floor 24.
It is placed on top. Each flyer disk 20 is driven and rotated in the same direction by each group by the drive device 19,
The cable 14 is fed through the openings 20a formed in the respective central portions. A large number of bobbins 26 for supplying the iron wire for armoring to the cable 14 are arranged on one surface of the fryer disk 20 via the fryer 28 in the circumferential direction. In the example shown,
An example in which six bobbins 26 are provided on one flyer disk 20 is shown. A striker post 30 that rises from the inside of the storage groove 24a formed in the floor 24 is provided on the outside of each flyer disc 20, and one end of the striker post 30 near the outer edge of the fryer disc 20 at the illustrated rising position, A contactor 32 extending toward the outer edge of the fryer disk 20 is provided.

FIG. 5 is a perspective view schematically showing the bobbin 26 and the fryer 28 that houses the bobbin 26. Each fryer 28 is rotatably supported via a pivot 34 so as to maintain the same posture regardless of the rotation of the fryer disk 20. Further, each bobbin 26 is rotatably and detachably supported by the corresponding flyer 28 by the structure similar to that described with reference to FIG. The iron wire 36 of each bobbin 26 is the flyer disc 2
In accordance with the rotation of 0, the fryer 28 is guided through the supply port 28a of each fryer 28 toward the cable 14 to be fed through the opening 20a of the fryer disk, whereby the cable 14
The iron wire 36 is spirally wound around the wire. Further, by rotating the tightening handle 38 for rotating operation, the pintle 40 extending along the central axis of each bobbin 26 can be withdrawn from the bobbin 26 for removal.

Each fryer 28 is provided with a lock mechanism 42 for preventing the rotation of the tightening handle 38, and in connection with this lock mechanism 42, the tightening handle 3 is provided.
A large number of recesses 38a are formed on the outer edge of the plate 8 at equal intervals in the circumferential direction. As shown in FIGS. 1 (a) and 1 (b), the lock mechanism 42 includes a pin 44 whose tip portion can project into the recess 38a, and a cylindrical housing 46 which accommodates the pin. Equipped with. The housing 46 is fixed to the fryer 28 via a bracket 48 at one end so that the central axis of the housing 46 is aligned with the radial direction of the handle 38. The housing 46 has a pair of lock groove portions 50 a extending parallel to the central axis thereof, and the housing 46.
A U-shaped guide groove 50 is formed on the entire side including the non-lock groove portion 50b that connects both lock groove portions 50a on the other end side of the guide groove 50. One edge portion of the pair of edge portions of the non-lock groove portion 50b located on the other end side of the inner housing 46 is linearly formed, while the other edge portion 50c is concave so as to draw a smooth arc. It is formed in the shallow groove portion.

The pin 44 has a main shaft portion 44a and a locking portion 44b substantially perpendicular to the main shaft portion 44a, and is generally L-shaped.
It is a character member. The main shaft portion 44a extends in the housing 46 toward one end thereof along the central axis of the housing, penetrates the housing and the bracket 48, and has a tip portion projecting into the recess 38a. Locking part 44b
Extends outward in the circumferential direction of the housing 46 from the other end of the main shaft portion 44a through the guide groove 50. As shown in FIG. 1B, the main shaft portion 44a has a housing 46
There is provided a stopper 52 that abuts on the inner wall of the recess 38a and defines a protruding position to the recess 38a. Between the stopper 52 and the partition wall 46a of the housing 46, the pin 44 is biased toward the protruding position. A compression coil spring 54 is arranged as a spring member that applies force.

Therefore, by guiding the locking portion 44b of the pin 44 to one of the lock groove portions 50b of the guide groove 50, the biasing force of the compression coil spring 54 causes
As shown by the solid line in FIG.
b is held at the end of the lock groove portion 50b of the guide groove 50. In this locked position, the tip of the main shaft portion 44a of the pin 44 is located in the recess 38a of the tightening handle 38. Therefore, the rotation of the tightening handle 38 is prevented, and the loosening of the tightening handle 38 is prevented. Therefore, the pintle 40 does not come off from the bobbin 26, and the bobbin 26 is surely prevented from falling off.

When replacing the bobbin 26, the operation of the wire rod twisting device 10 is stopped. In this stopped state, the locking portion 44b of the pin 44 overcomes the biasing force of the compression coil spring 54 and is pulled toward the non-locking groove portion 50b of the guide groove 50, and as shown by the phantom line in FIG. The portion 44b is locked to the smooth shallow groove portion 50d. In this locked position, the main shaft portion 44a of the pin 44 is
Is held in the retracted position by the tightening handle. Therefore, the tightening handle 38 can be freely rotated, and the bobbin 2 can be operated by this handle operation.
The bobbin 26 can be replaced by withdrawing the pintle 40 from 6. After the bobbin replacement work, the tightening handle 38 is tightened to a predetermined position.

Thereafter, the wire twisting device 1 is operated without manually operating the individual pins 44 to the unlocked positions.
The striker post 30 having the contactor 32 shown in FIG. 4 is provided in order to automatically perform the operation to the unlocked position with the restart of 0. FIG. 6 is a side view showing the striker post 30. 4 and 6
Referring to FIG.
Within a, it can be swung via a pivot 56 arranged substantially parallel to the fryer disc 20. The base end of the striker post 30 is connected to an extendable actuator 60 via a pivot 58 parallel to the pivot 56.
The actuator 60 is, for example, a hydraulic cylinder connected to a bracket 62 fixed to the floor via a pivot 64 parallel to the pivot 58.

The actuator 60 holds the striker post 30 in the storage position in the floor shown by the phantom line in FIG. 6 by its expansion and contraction operation. Also, the actuator 60 is
As a result of the extension operation, as shown in FIG. 4, the striker post 30 is moved to the rising position where the contactor 32 provided at the tip can contact the locking portion 44b of the pin 44 at the unlocked position of the lock mechanism 42. Hold.

Therefore, after the bobbin 26 is replaced, when the tightening handle 38 is tightened to a predetermined position and the striker post 30 is held at the rising position, the fryer disk 20 starts to rotate counterclockwise in FIG. 4, for example. As the flyer disk 20 rotates, the contactor 32 of the striker post 30 sequentially and automatically contacts the locking portion 44b of the pin 44 in the unlocked position, and the locking portion 44b is locked in the unlocking groove portion. Shallow groove part 5
It is pushed out from 0c toward one lock groove portion 50a corresponding to the rotation direction. As a result, when the fryer disc 20 makes one revolution, all the lock mechanisms 42 in the unlocked position of the fryer disc 20 are automatically actuated to the locked position, whereby the bobbin 26 is surely prevented from falling off. After the locking mechanism 42 is actuated to the locked position, the actuator 60 is actuated and the striker post 30
Is held in its stowed position. Thus, when the striker post 30 is unnecessary, it does not hinder other work.

Although the wire rod twisting device for iron wire armoring has been described above, the present invention is not limited to this and can be applied to various wire rod twisting devices. Further, as the guide groove 50 of the lock mechanism 42, for example, an L-shaped guide groove can be used instead of the U-shaped groove. However, in applying the fryer disc 20 to rotation in both directions, it is preferable to use a U-shaped guide groove as illustrated. Further, although the striker post 30 can be fixedly provided, it is advantageous to secure a wider working space by adopting the retractable type as shown in the drawing.

[0020]

As described above, in the wire rod twisting device according to the present invention, when the flyer disk starts to rotate by restarting after the bobbin is replaced, the contactors are sequentially rotated as the flyer disk rotates. It will automatically contact the pin in the unlocked position, which will automatically project into the recess of the tightening handle,
Rotation of the tightening handle is prevented and loosening of this handle is automatically prevented. For this reason, even after a large number of bobbin replacement operations, it is not necessary to manually lock individual bobbins as in the prior art, and it is possible to reliably prevent the bobbin from falling off due to forgetting this locking operation. In addition, the automation eliminates the need for manual lock operation, so the downtime of the device from the bobbin replacement to the restart of the wire twisting device can be greatly shortened, and work efficiency can be improved. it can.

[Brief description of drawings]

FIG. 1 is a schematic view showing a lock mechanism of a wire rod twisting device according to the present invention.

FIG. 2 is a schematic view showing a part of a conventional wire twisting device.

FIG. 3 is a schematic view showing an overall wire rod twisting device according to the present invention.

FIG. 4 is a front view showing a part of a wire rod twisting device according to the present invention.

FIG. 5 is a perspective view schematically showing a lock mechanism of the wire rod twisting device according to the present invention.

FIG. 6 is a side view showing a striker post of the wire rod twisting device according to the present invention.

[Explanation of symbols]

 20 Flyer Disc 26 Bobbin 28 Flyer 32 Contact 36 Wire Rod 38 Tightening Handle 40 Pintle 44 Pin 46 Housing 54 Spring Member

Claims (3)

[Claims] 1. A pintle projecting into the bobbin along a central axis of the bobbin so as to rotatably support a bobbin wound with wire on a fryer supported by a fryer disk. A wire rod twisting device provided with a rotation operation tightening handle for moving the pintle in the axial direction for attachment and detachment of a bobbin, the recess provided in the handle, and a protrusion protruding into the recess. The pin for preventing the handle from rotating, and the pin between the lock position for accommodating the pin and allowing the protrusion to the recess and the unlocked position for locking the pin in the exit position from the recess. A housing in which a guide groove for guiding the pin is formed; a spring member that applies a biasing force to the pin toward the lock position; and a fly member when the flyer disk rotates. Wire twisting device including a contactor for contacting the pin in the unlocked position over the disc outer edge near to release the engagement of the pin. 2. A striker post having the contactor provided at its tip in the vicinity of the fryer disk, an operating position where the contactor can engage the pin with the striker post, and the striker post on the floor. The wire rod twisting device according to claim 1, further comprising: an actuator that is operated between the wire rod and the storage position where the wire rod is stored. 3. The pin is formed at a main shaft portion extending outward from one end of the housing toward the handle, and at a substantially right angle to the main shaft portion, and extends from the guide groove outward in the circumferential direction of the housing. A locking groove portion that extends, and the guide groove includes a pair of lock groove portions that extend substantially parallel to the main shaft portion, and a non-lock groove portion that connects the pair of lock groove portions on the other end side of the housing. The wire rod twisting device according to claim 1, wherein the wire rod twisting device has a U shape and a smooth shallow groove portion for locking the locking portion is formed in the non-locking groove portion.