JPH0744770B2 - Method and apparatus for cutting and stripping covered wire - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for cutting / peeling a covered wire used in each electric device and an apparatus therefor.

(Prior Art) In general, a coated electric wire for wiring used in an electronic / electric product is subjected to the following processing and used.

That is, as shown in FIG. 14, the length L1, the thickness D of the covered electric wire 71, the length L2 of the covering 73, and the stripping lengths L3, L4 of the core wire 72 are processed according to the designated dimensions.

In recent years, as the demand for electronic and electric products has increased and diversified, the applicant of the present invention has proposed an automatic wire cutting / peeling device as shown in FIG. 15 as a device for cutting / peeling the covered electric wire 71 described above (Japanese Patent Application No. 59- No. 060132) is proposed.

That is, a feeding / pulling-back mechanism 74 including a pair of rollers 75 and 76 for feeding / pulling back the covered electric wire 71 by forward / reverse rotation, and a covered electric wire also by forward / reverse rotation.
A pair of rollers 77, 7 for pulling out and sending back 71
Drawer / feedback mechanism 79 including 8 and both mechanisms 7
An operation control mechanism (not shown) including a cutting / cutting mechanism 80 installed between 4 and 79 for cutting the coated electric wire 71 and cutting the coating, and an operation control computer for each mechanism.
It is composed of and.

Since this device is formed with a relatively simple structure, the device itself can be made compact and the working efficiency can be improved, and it is widely used.

(Problems to be Solved by the Invention) However, in this automatic electric wire cutting / peeling device, the work of twisting the core wire 72 cannot be performed, and each worker manually performs the work.

The object of the present invention is to cut and peel a covered wire, which can be performed by twisting the core wire during the peeling step of the covering, in addition to cutting and peeling the covered wire, which can simplify the structure and reduce the size. A method and an apparatus therefor are provided.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the first invention cuts a covered wire with a cutting blade, and forms a cut at the end of the covered wire with a cutting blade, and the cut state of the cutting blade. In the covered wire cutting and peeling method, the covered wire is sandwiched by a pair of rollers and both rollers are rotated to pull the covered wire in a direction away from the cutting blade to peel the end coating from the core wire. During the peeling process of the end coating by both rollers, the rollers are translated in the opposite directions toward the axial direction, and the coated wire is rotated together with the exposed core wire. The means for twisting the core wire in a state in which the rotation of the end coating is restricted by the pressure contact friction.

Further, in order to achieve the above object, the second aspect of the present invention includes a pair of covered wire transfer rollers for sandwiching the covered wire from a direction orthogonal to its longitudinal direction and advancing or retracting the covered wire in the longitudinal direction, A roller rotating mechanism that rotates both transfer rollers forward and backward, a cutting mechanism that includes a cutting blade that forms a cut at the end of the covered wire, and a cutting mechanism that includes a cutting blade that cuts the covered wire to a predetermined length, A twisting mechanism for moving the covered wire transfer rollers in their axial directions and in opposite directions to rotate the covered wire to twist the exposed core wire, and the roller rotation mechanism, cutting mechanism, cutting mechanism, and The control device controls each operation of the twisting mechanism.

(Operation) In the present invention, the coated wire is sandwiched by the pair of rollers during the stripping step of the end coating, and the pair of rollers is linearly moved in the axial direction and in the opposite direction to move the coated wire together with the core wire. As it rotates, the core wire is twisted.
According to the present invention, the transfer of the coated wire, the peeling of the end coating, and the twisting operation on the core wire are performed rapidly in synchronization.

(Embodiment) An embodiment embodying the present invention will be described below with reference to FIGS.

First, a coated electric wire cut / peeled and twisted by the method and apparatus of the present invention will be described.

As shown in FIG. 13, the coated electric wire 1 is composed of a core wire 2 and a coating 3 formed on the outer periphery of the core wire 2. The coatings 3 at both ends are stripped by a certain length. or,
The coated electric wire 1 is formed to have an overall length of L1, the peeled portion is formed to have a length L3 on the front end side and a length L4 on the rear end side, and a peeled portion on the rear end side is formed longer than the front end side. . Furthermore, the exposed core wire 2a portion of the peeling portion on the rear end side is twisted.

Next, the wire cutting / peeling / twisting device of the present invention will be described.

This device is mainly provided with a feeding / pulling-back mechanism 11 provided with a pair of rollers 12 and 13 for feeding / pulling back the covered electric wire 1 which is continuously rotated by forward and reverse rotations, and the coating provided at the front of both rollers 12 and 13. A guide mechanism 21 for guiding the electric wire 1 to the next mechanism is provided. Also, this device has the guide mechanism.
A cutting / cutting mechanism 31 is provided in front of 21 for cutting the coated electric wire 1 and cutting the coating 3. Further, this device is provided with a pair of rollers 42, 43 provided in front of the cutting / cutting mechanism 31 for pulling out / sending back the covered electric wire 1, and the rollers 42, 43 are relatively movable in the axial direction. Drawer formed / sent back /
It is composed of a twisting mechanism 41 and an operation control device 51 further including an operation control computer 52 of each of the mechanisms 11, 21, 31, 41.

Hereinafter, this device will be described separately for each mechanism.

(Feed-in / pull-back mechanism 11) A pair of upper and lower rollers 12, 13 (9, 1
(Illustrated only in FIG. 0) is rotatably supported in forward and reverse directions, and the rotation thereof feeds the coated electric wire 1 to the front mechanism and pulls it back. or,
The rollers 12 and 13 can be rotated in the forward and reverse directions by pulse motors 12a and 13a (illustrated only in FIG. 12),
The operation states of the pulse motors 12a and 13a are controlled by a computer described later.

(Guide mechanism 21) A machine frame 22 is formed in front of the feeding / pulling-back mechanism 11 as shown in FIG.
23 is pivotally attached by a bolt 24, and can be tilted in the horizontal direction with respect to the machine frame 22. The guide member 23 is composed of a main body 23a having a rectangular parallelepiped shape and having a through hole 29 therein, and a cylindrical guide tube 23b communicating with the through hole 29. A plate-shaped regulating member 28 is attached and fixed to the lower portion of the main body 23a.

As shown in FIG. 6, the restriction member 28 is provided with two elliptical through holes 25a, 25b, and the two holes provided in the machine frame 22 are provided in the through holes 25a, 25b. Locking protrusions 26b and 27b attached to the movable iron cores 26a and 27a of the solenoids 26 and 27 are inserted. Also, the through holes 25a, 25b have different diameters,
The tilting angle of the guide member 23 in the horizontal direction is controlled by moving one of the two movable iron cores 26a, 27a. Therefore, when the coated electric wire 1 is sent out / pulled back, the guide member 23 does not come into contact with the fixed cutting blade 37 and the movable cutting blade 38, which will be described later, as shown in FIG. At the time of cutting / cutting, as shown by the chain double-dashed line in FIG. 8, it tilts so as to come into contact with the blade portion 37a of the fixed cutting blade 37. At times, as shown in FIG. 11, the covered electric wire 1 to be sent back is largely tilted so as not to hit the guide tube 23b.

The operation of the two solenoids 26, 27 is controlled by a computer described later.

(Cutting / Cutting Mechanism 31) As shown in FIG. 1, a mounting plate 35 having an opening 36 is horizontally cantilevered in a case (not shown) in front of the guide mechanism 21, and its back surface is supported by a cantilever. Storage groove 35a
Are formed. A fixed cutting blade 37 is accommodated and fixed in the accommodating groove 35a, and a horizontal V-shaped blade portion 37a is formed at the tip of the cutting blade 37.

Further, a movable cutting blade 38 is supported by a drive device 39 (shown only in FIG. 12) in the accommodating groove 35a at a portion facing the fixed cutting blade 37 so as to be capable of reciprocating in the left and right directions, and its tip end. A lateral V-shaped blade portion 38a is formed in the portion.
Therefore, the movable cutting blade 38 is reciprocated by the driving device 39 according to an instruction from a computer, which will be described later, to cut the covered electric wire 1 or cut only the covering 3.

(Drawing-out / feeding-back / twisting mechanism 41) As shown in FIG. 2, four support rods 5a, 5b, 6a, 6b are vertically fixed to the four corners of the upper surface of the lower mounting plate-like 4, An upper mounting plate 7 is supported and fixed on the upper surface thereof. Of the support rods 5a, 5b, 6a, 6b, the two front support rods 5a, 5b are non-rotatably fixed to the mounting plates 4, 7, and the rear two support rods 6a,
6b is rotatably attached via a bearing 8.

As shown in FIG. 2, a flat plate-shaped bearing member 9 is erected at a substantially central portion of the lower mounting plate 4, and is fixed to the upper mounting plate 7 on the upper surface thereof. As shown in FIG. 1, on the right side of the bearing member 9, there is provided a pair of lower and upper rollers 42 and 43 which also serve as a sandwiching member and a pull-out / feed-back mechanism. The roller 42 is rotatably mounted on a shaft 42a via a bearing, and the upper roller 43 is rotatably and vertically movable on an elliptical cutout groove 9a via a locking pin 44.

Also, as shown in FIGS. 1 and 3, the lower and upper rollers 42,
43 is a main body 46 having a knurl 45 for contacting the covered electric wire 1 on the surface, a moving member 47 mounted on the left side small diameter portion 46a so as to be rotatable relative to the main body 46, and a spline fitting inside the main body 46. And a drive shaft 48 combined with each other.
As shown in FIG. 5, the drive shaft 48 has a pulse motor 49a,
49b is connected to the output shaft 49c of the pulse motor 49a,
The main body 46 is rotated in the forward and reverse directions by the rotation of 49b.

A rack 50 is fixed to a side portion of the moving member 47 by screws (not shown) or the like, and meshes with pinions 10a and 10b provided on the rear support rods 6a and 6b as shown in FIGS. It is like this. Further, as shown in FIGS. 4 and 5, timing pulleys 15a and 15b are attached to the support rods 6a and 6b so as to be located above the pinions 10a and 10b, and as shown in FIG. The mounting plate 7 is provided with a pulse motor 16 capable of rotating in the forward and reverse directions, and a timing pulley 16a mounted on the output shaft of the motor 16 as shown in FIG.
A timing belt 17 is hung on the pulleys 15a and 15b.

Therefore, when the pulse motor 16 rotates, the timing belt 17 rotates in the direction of the arrow in FIG.
While rotating b, the pinions 10a and 10b provided in a part thereof are also rotated. Then, the rotation causes the rack 50 and the moving member 47 to move in the axial direction of the main body 46,
Moreover, the upper roller 43 and the lower roller 42 are configured to move relative to each other in a direction in which they are separated from each other. Further, when the moving member 47 is moved in the axial direction while the lower and upper rollers 42, 43 are rotated in the winding direction of the arrow shown in FIG. 5 by the pulse motors 49a, 49b, The coated electric wire 1 sandwiched between the roller bodies 46, 46 is twisted while being pulled out.

The pulse motors 49a, 49b, 16 are connected to a computer, which will be described later, and the forward and reverse rotations are controlled based on the commands.

Further, a transfer pipe 30 for guiding the covered electric wire 1 to the rollers 42, 43 is arranged and fixed between the cutting / cutting mechanism 31 and the drawing / feeding back / twisting mechanism 41.

(Operation control device 51) As shown in FIG. 12, each of the pulse motors 16, 49a, 49b, 1
The 2a, 13a, the solenoids 26a, 26b and the drive device 39 are respectively connected to the computer 52 via lead wires, and the computer 52 also uses the lead wires to operate the operation box 53.
It is connected to the.

On the surface of the operation box 53, the cut length L1 of the covered electric wire 1
A digit switch type length setting indicator 54 for setting and displaying is provided. On the right side of the length setting display 54, a digit switch type number setting display 55 for setting and displaying the number of cut pieces of the coated electric wire 1 is provided. Stripping length setting indicators 56a and 56b for setting and displaying the exposed (peeling) lengths L3 and L4 of the core wire 2 at the front and rear ends of the cut coated electric wire 1 are provided at substantially the center of the operation box 53. ing.

Below the operation box 53, a start switch 57, a stop switch 58, a feed switch 59 and a feed back switch 60 are provided. Further, the number indicator 62 for displaying the number of the coated electric wires 1 actually cut, the number indicator
A switch 63 for performing the display operation of 62, a reset switch 64, and a switch 65 for instructing a correction calculation operation of the count number when a disconnection error occurs are provided.

Next, the manufacturing method of the covered electric wire 1 using the automatic cutting / peeling / twisting device configured as described above is described in Nos. 1, 5, 7 to 12
It will be described with reference to the drawings.

First, prior to the work of cutting, peeling, and twisting the covered electric wire 1, the covered electric wire 1 wound on a drum (not shown) is taken out, and the feeding switch 59 is turned on to feed the electric wire.
It is introduced between the rollers 12 and 13 of the drawing mechanism 11, inserted into the main body 23a and the guide tube 23b of the guide mechanism 21, and further moved between the fixed and movable cutting blades 37 and 38. When the tip of the covered electric wire 1 is moved to a state in which it is slightly projected from the cutting blades 37, 38, the feeding switch 59 is turned off and the rollers 12, 13 are stopped. At this time, although not shown, a limit switch is provided between the rollers 12 and 13 and the guide mechanism 21 to measure the moving length of the covered electric wire 1 and input it to the computer 52. There is.

In this state, the length setting indicator 54 of the coated electric wire 1 to be cut is operated to set and display the cutting length L1, the number setting indicator 55 is operated to set the number of cuts, and the front end side and the rear side. The coating length setting indicators 56a and 56b on the end side are operated to cover 3
Set the peeling lengths L3 and L4 of each. When the start switch 57 is turned on in this state, the coated electric wire 1 is automatically cut / peeled / twisted as follows.

That is, as shown in FIG. 9, the covered electric wire 1 is fixed at the set position by the rotation of the rollers 12 and 13, and the movable cutting blade 38 is moved in the left-right direction by the drive device 39, A cut is made only in the covering 3 portion of the covered electric wire 1. At this time, the guide mechanism 21 is a movable cutting blade.
The guide member 23 is tilted in conjunction with the operation of 38, and the side surface of the covered electric wire 1 is fixed to the fixed cutting blade 37 as shown by the chain double-dashed line in FIG.
Since it is brought into contact with the blade portion 37a, it is possible to prevent the covered electric wire 1 from being cut in a bent state. Then, the rollers 12 and 13 are reversely rotated, and the electric wire 1 is pulled back by the length L3, so that the covering portion L3 at the tip is peeled.

Next, the guide tube 23b is returned to a substantially intermediate position between the fixed blade 37 and the movable blade 38, and the rollers 12, 13 are
Is normally rotated to move the covered electric wire 1 from the cutting blades 37, 38 by a predetermined distance, that is, the cutting length L1 and stop. In this state, the drive device 39 is operated to cut the covered electric wire 1 by the two cutting blades 37, 38. At this time as well, since the covered electric wire 1 comes into contact with the blade portion 38a of the fixed cutting blade 38 due to the tilting of the guide mechanism 21 in the same manner as described above, it is not cut in a bent state.

The cut covered electric wire 1 retreats by the peeling length L4 at the rear end as shown in FIG. 10 by the reverse rotation of the lower and upper rollers 42, 43, and the movable cutting blade 38 moves at this position. Stop with the notch only in the coating 3 part.

Also, at this time, the cut coated electric wire 1 has the covering length of the rear end.
Since it retracts to L4, the guide member 23 and the coated electric wire 1 on the retracted track of the coated electric wire 1 become an obstacle. Therefore, the solenoid 27 is actuated and the guide tube 23b is largely tilted to be disengaged from the track as shown in FIG.

Then, the lower and upper rollers 42, 43 rotate in the forward direction to feed the covered electric wire 1. In synchronism with this forward rotation, the two rollers 42, 43 are moved by the rotation of the pulse motor 16 so that the moving member 47 is moved in the axial direction and in the direction away from each other. Therefore, as shown in FIG. 42,43
The covered electric wire 1 sandwiched therebetween is rotated around its central axis while being fed out. However, since the covered portion of the covered electric wire 1 (the portion L4 shown in FIG. 10) is press-contacted to both cutting blades 37 and 38, that portion cannot rotate and therefore the covered length The core wire 2 in the L4 portion is peeled off while being twisted, and as shown in FIG. 11, the core wire 2a portion is twisted.

After this step is completed, the next covered electric wire 1 inserted in the guide member 23 is transferred into the cutting / cutting mechanism 31. At this time, the solenoid 26 is demagnetized so that the fixed cutting blade 37 does not hit the coated electric wire 1, and the guide member 23 is moved to the regular coating transfer position, that is, the position corresponding to the blade portions 37a and 38a of the two cutting blades 37 and 38. Return to. Thus, the work of cutting, peeling, and twisting one covered electric wire is completed.

As described above, according to the present embodiment, two pairs of upper and lower rollers 12, 13, 43, 42 that rotate in the normal and reverse directions are provided, and at least one pair of the lower and upper rollers 42, 43 is separated from each other. And a cutting / cutting mechanism for cutting and peeling the covered electric wire 1 is provided between the rollers 12, 13, 42, 43 to twist the covered portion of the covered electric wire 1. Since the core wire 2 peeled by the above is twisted, the coated electric wire 1 can be cut, the peeled wire and the exposed core wire can be twisted, and the working efficiency can be remarkably improved.

The present invention is not limited to the above embodiment,
For example, the following modifications can be made and embodied.

(1) In this embodiment, only one of the coated electric wires 1 is twisted, but both may be twisted. In this case, the rollers 12 and 13 of the feeding / pulling-back mechanism 11 may be moved in the axial direction.

(2) In the above embodiment, the fixed cutting blade 37 and the movable cutting blade
38 and were used, but both can be movable cutting blades.

(Effects of the Invention) As described in detail above, according to the present invention, not only can a coated wire be cut and peeled, but the twisting of a core wire, which is conventionally performed by an operator, is performed by transferring and peeling the coated wire. This has an excellent effect that it can be carried out quickly in synchronization with the operation, the structure can be simplified, and the size can be reduced.

[Brief description of drawings]

1 to 13 show an embodiment of the present invention, FIG. 1 is a perspective view of an essential part showing an apparatus of the present invention, and FIG. 2 is a partially omitted perspective view showing upper and lower mounting plates of the apparatus of the present invention. FIG. 3 is a vertical cross-sectional view of a central portion showing a pull-out / feed-back roller that also has a twisting function, FIG. 4 is a plan view of the pull-out / feed-back / twisting mechanism, and FIG. 5 is a front view of FIG. FIG. 6 is a schematic plan view showing the tilting mechanism of the guide member, FIG. 6 is a schematic plan view showing the tilting mechanism of the guide member, and FIG. 7 is a tilted state of the guide member when twisting the coated wire. The plan view and FIG. 8 are also plan views showing the tilted state of the coated electric wire of the guide member at the time of cutting / cutting, and FIGS. 9, 10 and 11 are schematic diagrams showing the cutting / peeling / twisting process of the coated electric wire. Fig. 9 is a schematic side view showing the peeling work on the tip side of the covered electric wire, and Fig. 10 is the peeling work on the rear end side of the covered electric wire. FIG. 11 is a schematic side view, FIG. 11 is a schematic plan view showing a peeling and twisting state on the rear end side of the covered electric wire, FIG. 12 is a front view showing an operation control device, and FIG. 13 is manufactured by the device of this embodiment. Front view showing the covered electric wire,
14 and 15 show a conventional example, FIG. 14 is a front view showing a covered electric wire, and FIG. 15 is a schematic view showing a conventional device. 1 ... Coated electric wire, 11 ... Feed-in / pull-back mechanism, 12,13 ...
Rollers, 31 ... Cutting / cutting mechanism, 41 ... Pulling / feeding back / twisting mechanism, 42 ... Lower roller that also serves as a sandwiching member, 43 ... Upper roller that also serves as a sandwiching member.

Claims (2)

[Claims] 1. The coated wire is cut by a cutting blade,
A notch is formed at the end of the covered wire by a cutting blade, the covered wire is sandwiched by a pair of rollers in the cut state of the cutting blade, and both rollers are rotated to pull the covered wire in the direction away from the cutting blade to make the end part. In a coated wire cutting and peeling method for peeling a coating from a core wire, during the peeling process by both rollers of the end coating, the rollers are moved in parallel to each other in the axial direction, A coated wire cutting, characterized in that the coated wire is rotated together with the exposed core wire, and the core wire is twisted while the rotation of the end coating is restricted by the pressure contact friction between the cutting blade and the end coating. How to peel. 2. A pair of covered wire transfer rollers for sandwiching the covered wire from a direction orthogonal to its longitudinal direction and advancing or retracting the covered wire in the longitudinal direction thereof; A roller rotating mechanism, a cutting mechanism having a cutting blade that forms a cut at the end of the covered wire, a cutting mechanism having a cutting blade that cuts the covered wire to a predetermined length, and both of the covered wire transfer rollers. A twisting mechanism that twists the exposed core wire by rotating the covered wire by moving in the axial direction and in opposite directions, and controls each operation of the roller rotating mechanism, cutting mechanism, cutting mechanism, and twisting mechanism. A device for cutting and stripping covered wires, which is composed of a control device that