GB2211448A

GB2211448A - Wire twisting

Info

Publication number: GB2211448A
Application number: GB8725090A
Authority: GB
Inventors: Wen-Junn Chen
Original assignee: CHEN WEN JUNN
Current assignee: CHEN WEN JUNN
Priority date: 1987-10-27
Filing date: 1987-10-27
Publication date: 1989-07-05
Also published as: GB8725090D0

Abstract

The apparatus has a head 1 rotated by a motor 4 and containing a pair of wire twist clamping blocks 14, 15 which clamp firmly fully stripped or semi-stripped wires 33. The blocks 14, 15 are fulcrumed axially nearer one end. In one mode, as shown, they are held open by springs 18, 18' and are closed on the wires 33 by a conical heed 21 moved a variable amount by a rod 10 of an electromagnet 8,9. Alternatively, the blocks 14, 15 can be biassed to close by springs, the electromagnet not being used. The clamping blocks 14, 15 are suitable for varying the length of twisted wires. <IMAGE>

Description

Wire Twist Head Device This invention relates to Wire Twist Head Device.

Electric appliances are indispensable to modern life and it is inavoidable to use wires for any electrical or electronic products. However, in wire-to-wire connection or wire end connecting with electronic or electrical components, the wire insulation skin should be stripped.

The exposed naked core wires are so divergent that they must be manually twisted into solid shape to avoid short circuit or loosen connection. As there are wire stripping pliers in the market to facilitate stripping wire insulation skin, wire twisting works are still implemented by hands. Such handwork is very uneconomic for mass production and injuries are usually accompanied because of the sharp tipe of the core wires which cause troubles as a result.

Moreover, it is necessary to replace wire twist head for matching to different sized wire in average conventional wire twist machine and the naked wire ends varies in different twist status by different operators because of lack of flexibility.

In order to provide a kind of wire twist machine in speedy and convenient operation for green hands or old (experienced) hands to have unanimous twisted wires, the applicant, through practical tests at the shop, sought for further breakthrough to furnish a kind of quicker and more economic wire twist machine. Finally, the improved design of the invention of "Wire twist head device" was made.

The invention is mainly cosisted of : rotating head, face plate, wire twist clamping block, conical head, long axle, fixing frame, spring, fixing piece, electromagnetic valve and motor. The major objective is : Being driven by electro-magnetic valve, the conical head (gimlet) pushed the wire twist clamping block to open for clamping core wires of which ends will be twisted together and the motor drives the rotating head to rotate so as to twist the core wires as one of its distinctive features.

The secondary objective of the invention is : Being driven by electro-magnetic valve, the conical head pushes the wire twist clamping block to open and incorporates with the spring set on it to create buffering effect as well as proper clamping force to make twisted wire heads uniform as one of its distinctive features.

The another objective of the invention is the wire twist head does not need to be replaced for different specification of wire diameters but the work can be accomplished only by adjustment of the variable resistance on the electro-magnetic valve to control the strength of clamping force of conical head applying to wire twist clamping block and by adjustment of the spring force of the spring on wire twist clamping block as one of its distinctive features.

The another objective of the invention is The wiretwist clamping block can change its direction for adaptation to different wire length to be twisted and there is no need to replace wire twist clamping block as one of its distinctive features.

The another objective of the invention is : As the operation is much simplified, the wire ends twisted are unanimously uniform whether it is done by green hands or by old hands as one of its distinctive features.

An embodiment of this invention is described by way of examples, with reference to the drawings in which Fig. 1 illustrates the outlined elevation view of the invention.

Fig. 2 illustrates the disassembled elevation view of the invention.

Fig. 3 illustrates the longitudinally sectional view of the invention.

Fig. 3A illustrates the longitudinally sectional view of another preferred embodiment of the invention..

Fig. 4 illustrates the incorporational view of the wire twist clamping block.

Fig. 5 illustrates another kind of incorporation status of the wire twist clamping block in the invention.

Fig. 6 illustrates the circuit diagram of the invention.

Please refer to Fig. 1, the outlined elevational view of the invention, the Rotating Head 1 is in cylindrical shape having a U-shaped slot opening 12 at both sides respectively. It end has a sleeve 3. In front of the rotating head 1, it is locked and connected with a face plate 2. The sleeve 3 exactly encases the center axle 5 of motor 4 being fixes by a screw 6. the stationary base 7 fixes the motor 4 for diminishing vibration. The iron core 9 portion of the electro-magnetic valve 8 tightly encases a long axle 10 which is non-magnetic conduction material penetrating through the center axle 5 of motor 4 and deeply inserts into inner part of rotating head 1. The end of long axle 10 is threaded with a stop block 11.

Please refer to Fig. 2, the disassembled elevational view of the invention. The rotating head 1 is in cylindrical shape with a sleeve 3. The interior of the rotating head is a rectangular slot 13 which can exactly accomodates wire twist clamping blocks 14 15 which are in irregular rectangular shape of which fulcrum contact can be long end or short end so as to twist longer or shorter core wires; there are two sets of symmetric screw holes 16 17 on rotating head 1. A spring 18 18' is placed into screw holes 16 & BR< 16' resepctively and locked by virtue of screws 19 19' so as to make springs 18 18' just push against the ends of wire twist clamping blocks 14 15.Screws 20 20' lock into screw holes 17 17' incorporating with springs 18 18' to make the front end and rear end of wire twist clamping blocks 14 15 balanced for opening in proper angle respectively so as to facilitate motions of conical head and insertion of twisting wire ends; the face plate 2 is in circular flat plate type of which the central is a round role 22 through which the ends of twisting wires are placed into the twisting ends of wire twist clamping blocks 14 15. There is a screw hole 23 24 at both sides of the round hole 22 respectively. By virtue of two screws 25 26, the face plate 2 is fixed on the rotating head 1 of which both sides have a U-shaped slot 12 12' from which the ends of insulated wire skin are ejected out so that the wire twist clamping block can properly clamp the core wires for twist works. The motor 4 is placed on stationary base 7. The center axle 5 of motor 4 is hollow. The front end of the center axle has a screw hole 27 and the center axle canjust be inserted into the sleeve 3 of rotating head 1. On the sleeve 3, there is also a screw hole 28 with which screw hole 28 can just incorporated by virtue of screw 6 for lock connection. In other words, motor 4 can drive rotating head 1 to rotate.

The iron core 9 of electro-magnetic valve 8 is also hollow. A long axle 10 penetrating through iron core 9 also penetrates through the center axle 5 of the motor. A stop block 11 is placed at the rear end of long axle 10 of which front end is placed with a conical head 21. The slot 29 on the long axle is fit to accomodate stop piece 30 (E type washer). In between the stop piece and motor 4, a spring 31 is placed. When electro-magnetic valve 8 acts, the long axle 10 pushes forward and simultaneously press the spring 31 by virtue of stop piece. When electromagnetic valve 8 does not act, the long axle 10 does not have any force going forward and retard to original place by virtue of spring 31.

Please refer to Fig. 3, the longitudinally sectional view of the invention from which the incorporation status of various elements of the invention can be clearly understood. Being stripped off insulated skin, the wire 32 exposed core wires 33 naked which are the wire ends to be twisted. They are led through the round hole 22 getting in between the wire twist clamping blocks 14 15. The center axle 5 of motor 4 just incorporates with the sleeve 3 of rotating head 1 and is fixed by virtue of a screw 6. A long axle 10 in non-conducting material penetrates through iron core 9 and center axle 5. At the front end of the long axle 10, a conical head 21 is placed. The conical head gets deeply into the interior of rotating head 1 and is placed at the rear side of the wire twist clamping blocks 14 15. spring 31 is placed on the long axle 10.In between stop piece 30 (E type washer) and motor 14, it is placed with a spring 31 which is larger than the center axle 5 of motor 4 in diameter to avoid being affected by the rotating force of the motor 4 so as to keep the independentability of the long axle 10. When electro-magnetic valve acts, the driven iron core 9 makes long axle 10 push forward by virtue of stop piece 30 (E type washer) and the wire twist clamping blocks 14 15 are pushed open by virtue of the push of conical head 30 so that the wire twist ends of the clamping block close to clamp the core wire ends 33. As the rotation of motor 4 drives the rotating head 1, the wire twist blocks 14 15 rotate co-axially and the clamped core wires 33 are drawn out to become solid twisied wire ends.

Please refer to Fig. 3A, the longitudinally sectional view of another preferred embodiment of the invention. The locations where rotating head's 1 springs 18 18', screws 19 19' 20 20' are placed just in reverse to those in Fig. 3. The wire twist clamping blocks 14 15 are in double slanting wedge shape. They are closed by the spring force of springs 18 18' and slightly opened at the open end by screws 20 20'.

The core wires 33 are put in without need to start the electro-magnetic valve 8. the core wires can be twisted by drawing forward or backward.

Please refer to Fig. 4, the illustration of incorporation status of wire twist clamping blocks of the invention. The fulcrums 143 144 of the wire twist clamping block 14 just incorporates the fulcrums 153 154 of wire twist clamping block 15 as acting fulcrums. The wire twist clamping blocks 14 15 have two flat inclined planes and the inclined plane with two concave slots 141 142 151 152. the flat inclined planes are used in the twist of longer or shorter fully stripped wires.

Please refer to Fig. 5, the illustration of another incorporation status of wire twist clamping block of the invention. The inclined plane with concave slots 142 152 is suitable for twisting semi-stripped wires to make clamped core wires be not disturbed by insulated skin.

Please refer to fig. 6, the illustration of circuit diagram of the invention. Being switched 34 on, the motor starts to run driving rotating head's 1 rotation. By placing a variable resistor 36 on the return circuit 35, the amount of current from return circuit 35 to electro-magnetic valve 8 can be adjusted.

Being connected with return circuit 35, the pedal switch 37 steppes on will put electro-magnetic valve 8 in operation to push conical head 21 forward and make wire twist clamping blocks 14 15 close. When pedal switch 37 is released, the return circuit has no current and the electro-magnetic valve 8 does not operate to make the conical head 21 recover to original status.

The inprovement of wire twist head of the invention When electro-magnetic valve 8 has no current and the iron core 9 does not bear any force, the long axle retards by virtue of spring 31 force and the conical head 21 does not push the wire twist clamping blocks 14 15 open. However, the wire twist clamping blocks 14 15 make their both ends open in proper angles by virtue of the spring force of springs 18 18' and screws 20 20'. For twisting wires, put the switch 34 on and the motor 4 drives rotating head 1 to rotate.

The insulated skin of wire 32 is stripped off and core wires are naked 33. The maked core wires penetrate through the round hole 22 of face plate 2 and the variable resistor 36 in return circuit 35 is adjusted for proper curren. then pedal switch 37 is slightly stepped on, the electro-magnetic valve- 8 with current pushes the iron core 9 moving forward. By virtue of stop piece 30 (E type washer), the iron core pushed long axle 10 moving forward and the conical head 21 at the front end of long axle pushes the rear end of wire twist clamping blocks 14 15 open to make the front end of the clamping block clamp the care wires 33 and the rotating head rotates so as to twist the core wires 33 into a solid unit.

The invention can also adopt the wire twist clamping block with concave slotted inclined plane suitable for twisting semi-stripped wires. meanwhile, both sides of rotating head 1 have U-shaped slotted opening 12 to facilitate ejection out for the insulated skin at the front end of semi-stripped wires and the wire twist clamping blocks 14 15 can clamp firmly the core wires for twisting work.

In conclusion of the statement as above, the inventions are applicable to multi-core wires, insulated wires or general wires' twist work. As actually required, the direction of wire twist clamping blocks can be changed to meet the requirement of length variation and kinds especially suitable to AWG 1228 wires as the clamping force of wire twist clamping blocks for twisting core wires can be controlled by return circuit, the twisting status can make unified product regardless of operators whether they are green hands or old. consequently, the efficiency of wire twist work is much upgraded and there is no meed to replace other wire twist clamping blocks for meeting the requirement of various length of twisting wires with obviously improved effectiveness. The invention is unprecedented and it conforms the requirement of the practical and updated nature. Therefore, it applies for U.S. patent authorization.

Claims

1. A kind of Wire Twist Head Device consisting of: A rotating head in cylindrical shape installed with a sleeve the interior of the rotating head is a rectangular slot just able to accomodate two wire twist clamping blocks; both sides of the rotating head have a U-shaped slot opening respectively on the cylindrical base member of the rotating head, there are two sets of symmetric screw holes of which one near the sleeve just suitable to accomodate spring being locked bny screw while the other set of screw hole is locked by screw; the two sets of screw and spring push against wire twist clamping block to open in appropriate angle, the screw hole on the sleeve just permits the center axle of motor being encased and then it is fixed by screw; Two wire twist clamping blocks in irregular rectangle shape, they are symmetric to each other, the fulcrum divides into longer end and shorter end, each clamping block has a longer inclined plane, a shorter inclined plane, a long inclined plane with concaved solt and a short inclined plane with concaved solt; (th two clamping blocks can be turned over for practical use to meet the actual requirement of twisting wire ends to selet the long end or the short) A face plate in circular flat shape just able to match to the end face of rotating head, it has two screw hole and is fixed by two screws, the central of the face plate has a round hole for core wires entering to be twisted; A motor of which the center axle is hollow; A stationary base for fixation of motor; An electro-magnetic valve of which the central is an iron core which is hollow;; A long axle in non-conducting magnetic material penetrating thru iron core of electro-magnetic valve and the center axle of motor, the fittings are all loose fit, a conical head is placed in long axle front end which extends deeply into rotating head and the long axle rear end extends out of iron core to lock connect with a stop block, the concaved slot on the long axle can just accomodate the stop piece (E type washer) A spring placed on long axle at the location in between stop piece and motor, the spring does not touch the center axle of the motor;; In the above combination, the motor rotates and the electro-magnetic valve drives the iron core moving forward to push against stop piece and compress spring making long axle move forward i.e. the conical head moves forward to push against the rear end of wire twist clamping block opening so that the front end of wire twist clamping block (i.e. wire twist end) clamps core wire ends and in corporation with motor driving rotating head to rotate making core wire twist into solid unit as one of its distinctive features;

2. In the wire twist head device as stated in claim 1, the long axle penetrates through motor's center axle but motor rotation does not disturb long axle i.e. the long axle does not follow motor to rotate as one of its distinctive features;

3.In the wire twist head device as stated in in above claim 1, the conical head pushes against wire twist clamping block open by virtue of electromagnetic valve driving and incorporating with spring on wire twist clamping block creates buffering as well as proper clamping force so as to make twisted wire head unanimously uniform as one of its distinctive features;

4. In the wire twist head device as stated in above claim 1, the wire twist head does not need to be replaced because of different wire dia-eters but only by adjustment of the variable resistor in return circuit for control of the strength of clamping block to reach the purpose as one of its distinctive features;

5.In the wire twist head device as stated in above claim 1, the wire twist clamping block can change its direction taking longer or shorter end as wire twist head for adaptation of twisting wire length whether it is long or short and there is no need to replace wire twist clamping blocks as one of -ts distinctive features

6. In the wire twist head device as stated in claim 1, it can twist wire ends fully stripped or semi stripped as one of its distinctive features;

7. In the wire twist head device as stated in above claim 1, the locations of the spring and screw of rotating head are interchangeable of rmaking the opening end of the wire twist clamping blocks slightly open so that the core wires can be twisted only by drawing core wires to push forward and there is no need to start the electro-magnetic valve as one of its distinctive features.