JP2666927B2 - Cutting / cutting mechanism in coated wire cutting / peeling equipment - Google Patents

Description

Description: Object of the invention (industrial application field) The present invention relates to a cutting / cutting mechanism in a coated wire cutting / peeling apparatus used for various electric appliances. (Prior Art) In general, a coated electric wire for wiring used in an electronic / electric product is formed by peeling a predetermined length of the front and rear coatings of a coated electric wire cut to a certain length. . In recent years, as the demand for electronic and electric products has increased and the demand has been diversified, the present applicant has proposed an automatic electric wire cutting and peeling device as shown in FIG. 060132). That is, a feed / retract mechanism 74 including a pair of rollers 75 and 76 for feeding / retracting the covered electric wire 71 by forward / reverse rotation, and a draw / return of the coated electric wire 71 by forward / reverse rotation. One Roller 7
A pull-out / feed-back mechanism 79 having 7,78, a movable cutting blade 80 provided between the two mechanisms 74,79 for cutting the coated electric wire 71 and cutting the coated wire, and a cutting provided with a fixed cutting blade 81.・
It comprises an incision mechanism 82 and an operation control device (not shown) having an operation control computer (not shown) for each mechanism. Since this device is formed with a relatively simple structure,
The apparatus itself can be made compact and the work efficiency can be increased, so that it is widely used. (Problems to be solved by the invention) In the automatic wire cutting and peeling device,
When cutting the covered electric wire 71 with both the cutting blades 80 and 81 of the cutting mechanism 82, the rear end E of the cut covered electric wire 71 is displaced toward the fixed cutting blade 81, but this is because the movable cutting blade 80 When returning to the retracted position, the insulated wire 71 returns to its normal position, that is, the opening W between the movable cutting blade 80 and the fixed cutting blade 81 by the restoring force of the insulated wire 71, and reverses the rollers 77 and 78 of the drawer / feedback mechanism 79. Then, the covered electric wire 71 is returned to a predetermined length, and here both cutting blades 80, 8
If a cut is made in the covering of the covered electric wire 71 by 1 and the rollers 77 and 78 are rotated forward, the covering is peeled. However, the conventional cutting / cutting mechanism 82 is a movable cutting blade.
Since the cut wire 80 and the fixed cutting blade 81 only correspond to each other, the cut covered wire 71 does not always return to the normal position, and the covered wire 71 remains displaced toward the fixed cutting blade 81. In this case, the back end E of the covered electric wire 71 interferes with the fixed cutting blade 81 at the time of returning the drawer / return mechanism 79, so that the actual return cannot be performed. There was a problem of becoming. Configuration of the Invention (Means for Solving the Problems) In order to solve the above problems, the present invention provides a mounting plate attached to a frame of a covered wire cutting / peeling device, and an attachment plate attached to the attachment plate. And a fixed cutting blade having a concave blade portion at the tip, and a movable cutting blade similarly mounted on the mounting plate so as to reciprocate in correspondence with the fixed cutting blade, and having a concave blade portion at the tip, Attached to the tip of the movable cutting blade, locked to the cutting end of the coated wire cut by the both blades when the two blades are separated, and the cutting end is formed by separation of the two blades. And a covering wire displacing member for displacing the opening toward the center of the opening. (Operation) Accordingly, in the present invention, when the movable cutting blade is moved to the fixed cutting blade side in a state where the covering wire is inserted into the opening between the blade portion of the fixed cutting blade and the blade portion of the movable cutting blade, the covering is reduced. The line is pushed by the blade portion of the movable cutting blade toward the blade portion side of the fixed cutting blade, and is displaced near the blade portion of the fixed cutting blade to be cut. afterwards,
When the movable cutting blade is returned to the direction away from the fixed cutting blade, the covered wire displacement member is locked to the cut end of the cut covered wire along with the operation, and the cut end is moved to the center of the opening. To the side. Therefore, even if the cut covered wire is moved forward and backward from this state, the cut end of the covered wire does not interfere with the blade portion of the fixed cutting blade. (Embodiment) An embodiment of the present invention will be described below with reference to FIGS. First, the covered electric wire cut and peeled by the cutting and peeling device of this embodiment will be described. As shown in FIG. 12,
The covered electric wire 1 is composed of a core wire 2 having a length L1 and a covering 3 formed on the outer periphery thereof, and has a front end covering (hereinafter referred to as a front covering 3a) and a rear end covering (hereinafter referred to as a rear covering). Each side coating 3b) is peeled off by a certain length L2. Next, the automatic cutting and peeling apparatus of this embodiment will be described. As shown in FIG. 5, this device is mainly a feeding / pulling-back mechanism 11 including a pair of rollers 12 and 13 for feeding and pulling back the covered electric wire 1 continuously by forward and reverse rotations.
And the covered electric wire 1 provided in front of both rollers 12, 13.
And a cutting / cutting mechanism 31 provided in front of the guiding mechanism 21 for cutting the covered electric wire 1 and cutting the covering 3. The gripping mechanism 14 is provided in front of the cutting / cutting mechanism 31 and grips a rear coating 3b which is a peeling portion on the rear side of the coated electric wire 1. The gripping mechanism 14 is provided in front of the gripping mechanism 14. A pair of rollers 42, 43 for pulling out and sending back the covered electric wire 1
And a movement control device (not shown) having a computer for controlling the operation of each of the mechanisms 11.14, 21, 31, and 41. Each mechanism is described separately. [Sending / Retracting Mechanism 11] As shown in FIG. 5, a pair of upper and lower rollers 12, 13 are supported at the right end of the front surface of the case 4 by a pulse motor (not shown) so as to be rotatable in forward and reverse directions. The rotation causes the coated electric wire 1 to be fed into and pulled back from the front mechanism. The operation state of the pulse motor is controlled by an operation control device (not shown). [Guiding Mechanism 21] As shown in FIGS. 5 to 9, a machine frame 22 is mounted in front of the feeding / retracting mechanism 11 (the left side in FIG. 5). Are supported by bolts 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-like regulating member 28 is attached and fixed to a lower portion of the main body 23a. The regulating member 28 has two elliptical through holes 25a,
25b is transparent. The machine frame 22 is provided in the through holes 25a and 25b.
Iron cores 26a and 27a of two solenoids 26 and 27 provided in
The locking projections 26b, 27b attached to are inserted. or,
The through holes 25a and 25b have different major diameters, and the tilt angle of the guide member 23 in the horizontal direction is controlled by moving one of the two solenoids 26 and 27. Therefore, when the guide member 23 sends out and pulls back the covered electric wire 1, as shown by the solid line in FIG. 8, the covered electric wire 1 'does not come into contact with a fixed cutting blade 37 and a movable cutting blade 38 which will be described later. It is located near the middle part,
At the time of cutting, as shown by the chain double-dashed line in FIG. 8,
Tilting so as to contact the blade portion 37a of the fixed cutting blade 37,
Further, when the cut insulated wire 1 is fed back and peeled, as shown by the solid line in FIG. 9, the insulated wire 1 'is tilted largely so as not to hit the guide tube 23b. The operation of the two solenoids 26 and 27 is controlled by an operation control device (not shown). [Cutting / Cutting Mechanism 31] As shown in FIGS. 1 to 6, a mounting plate 35 having an opening window 36 (see FIG. 6) in front of the guide mechanism 21 is a frame body (not shown) in the case 4. ) Is horizontally supported by a cantilever, and a pair of support plates 34 forming a receiving groove 35a are fixed vertically on the front surface. A fixed cutting blade 37 is housed and fixed in the housing groove 35a, and a cutting edge 37 has a V-shaped blade portion 37a formed at its tip. A movable cutting blade 38 is supported by a driving device (not shown) so as to be able to reciprocate in the left-right direction in a receiving groove 35a facing the fixed cutting blade 37. A blade portion 38a having a shape is formed. Accordingly, the movable cutting blade 38 is provided with an operation control device (not shown).
Reciprocate according to the instruction of the above, to cut the coated electric wire 1 or cut only the coating 3 thereof. The blade portion 38a of the movable cutting blade 38 includes an electric wire displacement member 3 for displacing the cut coated wire 1 from the fixed cutting blade 37 to the openings W of the both cutting blades 37, 38 when cutting the coated wire 1.
9 are attached. This wire displacement member 39 is a fixed cutting blade 3
Like the blade portion 37a of 7, it is formed in a horizontal V shape. [Gripping Mechanism 14] As shown in FIG. 1, a fixed-side gripping member 15 having an inverted L-shape as a whole is bolted to the front surface of the support plate 34 on the side of the fixed cutting blade 37 located above, The grip 15
a is made to protrude forward from the fixed cutting blade 37. On the front surface of the movable cutting blade 38, a movable gripping member 16 having a rectangular plate shape as a whole is attached so as to be movable in the left-right direction, and the grip 16a is projected forward from the movable cutting blade 38. State. More specifically, as shown in FIGS. 1 and 4, a groove 17 extending in the left-right direction is formed at the center of the movable-side gripping member 16, and the tip of the movable cutting blade 16 is formed in the groove 17. The bolt 18 screwed into 38 is attached. A coil spring 19 is interposed between the bolt 18 in the groove 17 and the holding portion 16a of the groove 17 in a compressed state, and the rear coating 3b of the covered electric wire 1 is held by both holding portions 15a and 16a. When this is done, an unnecessary force is not applied to the rear side coating 3b. Accordingly, the movable gripping member 16 reciprocates in the left-right direction with the movement of the movable cutting blade 38, and grips the rear cover 3b with the gripping portions 15a and 16a according to an instruction from an operation control device (not shown). It has become. Although not shown, the grip portions 15a and 16a are knurled to prevent slippage. [Drawer / Return Mechanism 41] As shown in FIGS. 5 and 6, a pair of upper and lower rollers 42, 43 are supported in front of the gripping mechanism 14 by a pulse motor (not shown) so as to be rotatable in forward and reverse directions. The rotation causes the coated electric wire 1 to be pulled out or returned. The operation state of the pulse motor is controlled by an operation control device (not shown). Further, the gripping mechanism 14 and a pull-out / feedback mechanism
A transfer pipe 30 for guiding the insulated wire 1 to the rollers 12, 13, 42, 43 is provided between the transfer pipe 30 and the feed / retract mechanism 11.
Is fixed. Next, the operation of cutting and peeling the covered electric wire 1 by the automatic cutting and peeling apparatus configured as described above will be described. As shown in FIG. 10, the covered wire 1 is stopped at the set position by the forward rotation of the rollers 12, 13, and the movable cutting blade 38 is moved in the left-right direction by the driving device (not shown). A cut is made only in the three covered portions of the covered electric wire 1. Thereafter, when the rollers 12 and 13 of the feed-in / pull-back mechanism 11 are rotated in the reverse direction in this state, the front coating 3a, which is on the front side of the cut, is peeled off from the core wire 2 of the coated electric wire 1. At this time, the guide mechanism 21 interlocks with the operation of the movable cutting blade 38 to tilt the guide member 23 so that the side surface of the covered electric wire 1 is fixed to the blade portion of the fixed cutting blade 37 as shown by the chain double-dashed line in FIG. Since the insulated wire 1 is brought into contact with 37a, it can be prevented that the covered electric wire 1 is cut in a bent state. Next, the guide tube 23b is returned to a substantially intermediate position between the fixed cutting blade 37 and the movable cutting blade 38, and the rollers 12 and 13 are normally rotated to move the covered electric wire 1 from the both cutting blades 37 and 38 by a predetermined distance. That is, the front and rear coatings 3a and 3b are moved and stopped by the added length L1. In this state, a driving device (not shown) is operated to cut the covered electric wire 1 by the two cutting blades 37, 38. At this time, the covered electric wire 1 is also tilted by the guide mechanism 21 so that the blade portion 37 of the fixed cutting blade 37 is moved.
Because it comes into contact with a, it will not be cut in a bent state. Here, the cutting process of the covered electric wire 1 is shown in FIG.
This will be described in detail with reference to (c) and FIGS. 3 (a) to (c). First, when the movable cutting blade 38 and the fixed cutting blade 37 are in the open state as shown in FIGS. 2 (a) and 3 (a), the wire displacement member 39 corresponds to the blade portion 37a of the fixed cutting blade 37. I have. In this state, as shown in FIGS. 2 (b) and 3 (b), the movable cutting blade 38 is operated by a driving device (not shown) to move to the fixed cutting blade 37 side to cut the coated electric wire 1. To do. At this time,
The cut insulated wire 1 ′ is the blade portion 38 a of the movable cutting blade 38.
To contact the front surface (the lower surface in FIG. 3B) of the blade portion 38a of the movable cutting blade 38. Then the movable cutting blade
When the wire 38 is retracted, the rear end E of the covered wire 1'is almost moved by the wire displacing member 39 as shown in FIG. 2 (c) and FIG. It is displaced to the center.
As a result, in the next step of returning the cut electric wire 1 ',
Collision between the electric wire 1 'and the fixed cutting blade 37 is avoided. Then, the cut coated electric wire 1'is retracted by the length L2 of the rear side coating 3b by the reverse rotation of the upper and lower rollers 42, 43 as shown in FIG. 11, and at this position the movable cutting blade is moved.
38 moves and stops with a cut in only the coating 3 part. At this time, since the insulated wire 1 'retreats by the length L2 of the back coating 3b, the guide member on the retreat track of the insulated wire 1'
23 and the subsequent insulated wire 1 are in the way, but since the solenoid 27 is actuated and the guide tube 23b is largely tilted and comes off the track as shown by the solid line in FIG. ′ Does not come into contact with the subsequent covered electric wire 1. After that, the movable cutting blade 38 is left as it is, and the upper and lower rollers 42, 43 are slightly rotated forward so that the core wire 2 of the covered electric wire 1'is partially exposed (specifically, about 1 to 2 mm). The skin is peeled off. (See FIG. 4) This is because when a strong tensile force is applied to both gripping members 15 and 16 at the time of peeling the back side coating 3b described later, the back side coating 3b is gripped by the gripping member 1.
This is to prevent the pieces from coming off without being peeled off from 5,16. Next, the movable cutting blade 38 is moved to release the cut, and the upper and lower rollers 42, 43 are rotated in the forward direction so that the rear end of the rear cover 3b of the covered electric wire 1'is held by both gripping members 15, 16. Is moved to a position facing the grippers 15a, 16a. After that, by moving the movable cutting blade 38, the movable side gripping member 16 is moved to the fixed side gripping member 15 side, and as shown in FIG. 4, the rear end of the rear side coating 3b is held by both gripping parts 15a and 16a. And the upper and lower rollers 4
2, 43 is rotated forward to feed the coated electric wire 1 'forward. At this time, the coated wire 1 ′ has only the rear coating 3 b gripped by the two gripping members 15 and 16, so that the coated wire 1 ′ leaves the rear coating 3 b between the gripping members 15 and 16. The covered electric wire 1 ', which has been moved forward while being peeled off and peeled on both sides, is moved forward of the upper and lower rollers 42, 43. Therefore, the rear coating 3b peeled off from the coated electric wire 1'has the cutting blades 37, 38
The outer coating 3b is cut off by the cutting blades 37, 3
Eight parts remain to prevent cutting work. Further, since the movable holding member 16 is configured so that the coil spring 19 does not apply an excessive force to the covered electric wire 1 ', the core wire 2 portion of the rear covering 3b may be deformed by an abnormally strong pressure. Can be prevented. Further, since the rear side coating 3b is in a semi-peeled state, peeling can be surely performed. After the completion of this step, when the next covered electric wire 1 inserted into the guide member 23 is transferred into the cutting / cutting mechanism 31, the covered electric wire 1 is attached to the blade portion 37a of the fixed cutting blade 37.
The solenoid 26 is demagnetized so that the
Is returned to the normal position, that is, to a substantially intermediate position between the two cutting blades 37, 38. Thus, the work of cutting and peeling one covered electric wire 1 'is completed. Effects of the Invention As described in detail above, according to the present invention, the movable cutting blade moves the cutting end portion of the covered wire that is pushed by the movable cutting blade to be displaced toward the fixed cutting blade side and cut. When moving apart, the covered wire displacing member displaces it toward the center of the opening formed between the blades of the two cutting blades, so fixed cutting is possible even if the cut covered wire is moved back and forth from that state. It is possible to prevent interference with the blade, and it is possible to perform the cutting and peeling work with high efficiency by ensuring the transfer of the covered wire.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 12 show an embodiment of the present invention, FIG. 1 is a perspective view showing a cutting / cutting mechanism of a covered electric wire, and FIGS.
3 (c) is a front view showing the operation of the cutting / cutting mechanism, FIGS. 3 (a) to 3 (c) are central cross-sectional views showing the operation of the cutting / cutting mechanism, and FIG. FIG. 5 is a front view showing the entire cutting / peeling apparatus, FIG. 6 is a perspective view showing a guide member and a cutting / cutting mechanism, and FIG. 7 is a schematic plan view showing a tilting mechanism of the guide member. 8 and 9 are plan views each showing a tilted state of the guide member, FIG. 10 is a schematic side view showing a stripping process of a front coating of the coated electric wire, and FIG. 11 is a stripping of a rear coating of the coated electric wire. FIG. 12 is a schematic side view showing the steps, FIG. 12 is a front view showing a covered electric wire manufactured by the apparatus of this embodiment, and FIG. 13 is a schematic view showing a conventional apparatus for cutting / peeling a covered electric wire. 1 ... covered wire, 3 ... cover, 3b ... back cover, 11 ...
… Feed-in / pull-out mechanism, 12,13 …… Roller, 14 ……
Gripping mechanism, 15,16 ... Grip member, 31 ... Cutting / cutting mechanism, 35 ... Mounting plate, 35a ... Accommodation groove, 37 ... Fixed cutting blade, 38 ... Movable cutting blade, 37a, 38a ... Blade, 39 ...
… Electric wire displacement member, 41 …… Drawer / feedback mechanism, 42,4
3 ... roller, W ... opening, L1 ... length to be cut, L2 ... predetermined length.

Claims (1)

(57) [Claims] A fixed cutting blade (37) attached to the frame of the covered wire cutting / peeling device, and a fixed cutting blade (37) attached to the mounting plate (35) and having a concave blade portion (37a) at the tip end. A movable cutting blade (38), which is reciprocally mounted on the mounting plate (35) in correspondence with the fixed cutting blade (37), and has a concave blade portion (38a) at a tip thereof; At the time of separation of the two blades (37a, 38a) from the cutting end of the covered wire (1 ') attached to the tip of the movable cutting blade (38) and cut by the two blades (37a, 38a). A covered wire displacement member (3) that locks and displaces the cut end toward the center of an opening (W) formed by the separation of the two blades (37a, 38a).
9) A cutting / cutting mechanism in a coated wire cutting / peeling apparatus, which is constituted by the above (9).