JP2022060248A - Terminal crimping device, terminal crimping wire manufacturing device, and manufacturing method of end-treated wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal crimping device having a wire elongation absorption mechanism having a relatively simple structure, which can absorb the core wire elongation generated at the time of terminal crimping and prevent bending and buckling of an electric wire.

SOLUTION: A terminal crimping device 400 includes terminal crimping machines 27' and 37' that crimp a terminal T to the end of a wire W whose coating has been peeled off, and wire clamp transport portions 21' and 31' that insert the end of the wire into the terminal crimping machine. The wire clamp transport portion is equipped with an extension absorption mechanism 420 that retracts a clamp 411 according to the extension of the wire when the terminal is crimped, and the extension absorption mechanism includes stretching start crimping height detecting means that detects that the crimping height at which a core wire of the electric wire starts to be stretched by terminal crimping is reached, and a cylinder 423 that operates in synchronization with the means and allows the clamp 411 to retract.

SELECTED DRAWING: Figure 10

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to a device for peeling (peeling) the coating (skin) at the end of an electric wire and a device for crimping terminals after peeling the coating. In particular, the present invention relates to a coating stripping device and a terminal crimping device suitable for electric wires having a relatively large diameter (for example, a stranded wire cross-sectional area of 8 sq (mm ² ) to 20 sq).

In order to automatically crimp terminals to thick electric wires or aluminum wires with low core wire strength, as described below, (1) the problem of coating debris (peeling debris) and (2) crimping of terminals It is required to deal with the problem of bending due to wire elongation.

(1) Regarding coating debris In order to make a cut in the coating for stripping a thick electric wire, a semi-arc-shaped coating stripping blade (cutting blade) that matches the core wire combination diameter (twist diameter) of the wire is common. Has been adopted by. A diamond-shaped blade is usually used to peel off the coating of electric wires other than thick ones. The reason is that when a diamond-shaped blade is used for a thick electric wire, the remaining part of the coating that does not have a notch becomes large, and the electric wire is pulled back to tear off the remaining part of the notch (see FIG. 3C, paragraph 0034, etc.). This is because the resistance at the time increases, which is not preferable. In addition, the shape of the torn portion is disturbed, which causes troubles and quality deterioration during crimping of terminals.

In a thick electric wire wound on a reel, the core wire twisted in combination on an arc at the time of manufacture may be deformed into an elliptical shape due to the weight of the electric wire itself or the tension associated with the reel winding. In that case, although the above-mentioned semi-arc blade is used to make a notch in the coating, the debris of the coating peeled off from the blade mold may bite. If the subsequent work is continued in this state, quality deterioration such as a defective notch shape of the coating may occur, and it is necessary to surely remove the adhered coating debris.

As a technical proposal for removing this coating debris, Japanese Patent Application Laid-Open No. 2009-55766 (Patent Document 1, Zoken) is available. In the technique of Patent Document 1, the peeling blade closing operation by the oscillating operation method and the coating removing piece move toward the center of the electric wire side in conjunction with each other, and after the coating is stripped, the coating removing piece is held, which is more than the peeling blade opening operation. By delaying the opening operation, the coating debris is removed from the peeling blade.

(2) Elongation of electric wire during crimping When a terminal is crimped to a thick electric wire, the diameter of the core wire of the electric wire is relatively large, so that a phenomenon occurs in which the core wire is considerably elongated when crimping the terminal. If measures are not taken to absorb this wire elongation, wire bending and buckling of the core wire may occur.

Japanese Patent Application Laid-Open No. 2015-211039 (Patent Document 2, KOMAX) is a proposal of a method for absorbing the elongation of an electric wire for the purpose of preventing the electric wire from bending. The technique of Patent Document 2 is to prevent bending and buckling of an electric wire by moving the electric wire transport gripper in the electric wire axial direction in response to the extension of the electric wire core wire generated at the time of crimping. The technique of Patent Document 2 requires sensing of the extension state (extension force and extension dimension) of the wire core wire and complicated synchronous control of the actuator for driving the wire transfer gripper.

Japanese Unexamined Patent Publication No. 2009-55766 JP-A-2015-211039

An object of the present invention is to provide an electric wire coating stripping device capable of reliably removing coating debris that has adhered firmly. Alternatively, it is an object of the present invention to provide a terminal crimping device having a wire elongation absorption mechanism having a relatively simple structure that can absorb the core wire elongation generated at the time of terminal crimping and prevent bending and buckling of the electric wire.

In this "means for solving the problem", "claims", and a part of the specification, the reference numerals of each part of the attached figure are shown in parentheses, but this is for reference only. However, there is no intention to limit the scope of rights to those shown in the attached figure.

The wire coating stripping device of the present invention comprises a pair of peeling blades (231 and 233) for making cuts in the coating at the end of the wire (W) from two directions, and the plurality of stripping blades (231 and 233). A peeling blade driving means (248) that opens and closes between them, a clamp (211) that grips the original end portion of the electric wire, and a plurality of peeling blades (231 and 233) that are opened by driving the clamp. ), The end portion of the electric wire is inserted, and after the notch of the peeling blade is made, the original side portion is pulled so that the covering portion (WK) at the tip of the notch is placed on the tip side of the peeling blade. It is equipped with a clamp transport section (21.31) that is left and peeled off, and is further separated from the position in contact with the covering portion (coating waste) (WK) attached to the tip side of the peeling blade (231/233). It is characterized by comprising a coating debris removing member (241) that is reciprocally driven to and from the position.

The above-mentioned "plurality of peeling blades forming a pair for making cuts from two directions" does not mean to exclude three or more peeling blades in three or more directions. The above "round trip" includes two or more round trips. The debris removing member includes a member that knocks off the covering debris adhering to the blade mold (for example, reference numerals 241, 241A and 241B in FIG. 5) and a member that grips and carries (for example, reference numeral 241C in FIG. 5).

The actuator of the covering debris removing unit includes a structure using an electromagnetic solenoid or the like in addition to an air cylinder. In addition, by deforming the shape of the removal plate, the tapping method can be slanted, and the stripping and removal of the covering debris becomes easy. Specifically, it will be described later with reference to FIG. In addition, by using static electricity elimination air blow, vacuum suction, etc. together, the removal performance is improved, and the versatility is increased, such as expanding the application to fine electric wires (adhering to the peeling blade due to static electricity). It can be said that it is also an accompanying feature that an air outlet (including static elimination blow) and a vacuum suction device can be easily combined with the covering discharge guidance path (discharge chute, piping) and the removal movable plate.

It is preferable that the peeling blade driving means (248) uses a servo mechanism in which the amount of cut into the coating such as the lowering position of the upper peeling blade can be adjusted for each wire size. Further, it is preferable that the wire insertion mechanism of the clamp transport portions 21 and 31 also uses the servo mechanism. Specifically, it will be described later in the description of the embodiment of the invention.

The terminal crimping device (300) of the present invention includes a terminal crimping machine (27, 37) that crimps a terminal (T) to the end of an electric wire (W) whose coating has been peeled off, and the terminal crimping machine that grips the electric wire. A terminal crimping device including an electric wire clamp transport portion (21.31) for inserting the end portion of the electric wire into the wire clamp transport portion (21.31). Corresponding to the clamp (211) that grips the wire, the clamp driving means (348) that drives the clamp and inserts the end of the wire into the crimping machine (27/37), and the wire extension during crimping of the terminal. A stretch absorption mechanism (320) for retracting the clamp (211) is provided, and the stretch absorption mechanism (320) urges the clamp (211) toward the crimping machine and in the anti-insertion direction. It is characterized by having a telescopic urging member (323) that deforms by receiving a force equal to or higher than a set value, and an urging force adjusting member (327) that adjusts the force at the start of expansion and contraction of the telescopic urging member (323). do.

Further, it may have an insertion position defining member (329) that defines an insertion position of the clamp (211) that is urged by the telescopic urging member (323). In the terminal crimping device of the present invention, the expansion / contraction urging member (323) can be used as a spring. The urging force adjusting member (327) and the insertion position defining member (329) can be screw members such as bolts.

By adding a mechanism using a telescopic urging member (323) such as a spring, it is possible to absorb wire elongation of different dimensions in terminal crimping of wires of various sizes. Moreover, complicated sensors and controls are not required.

The other terminal crimping device (400) of the present invention grips the terminal crimping machine (27'/ 37') that crimps the terminal (T) to the end of the wire (W) whose coating has been peeled off, and the electric wire. A terminal crimping device (400) including a wire clamp transport section (21'/ 31') for inserting an end portion of the wire into the terminal crimping machine, wherein the wire clamp transport section (21'/ 31') is provided. However, a clamp (411) that grips the original side portion of the end portion of the electric wire, and a clamp driving means (448) that drives the clamp and inserts the end portion of the electric wire into the crimping machine (27', 37'). ) And an extension absorption mechanism (420) that retracts the clamp (411) in response to the extension of the electric wire at the time of crimping the terminal, and the extension absorption mechanism (420) is the core wire of the electric wire by crimping the terminal. Having an elongation start crimping height detecting means for detecting that the crimping height at which the elongation starts has been reached, and a cylinder (423) that operates in synchronization with the means and allows the clamp (411) to retract. It is characterized by.

The extension start crimping height detecting means is, for example, a descending position detector of a vertical drive mechanism of a crimper (275, see FIG. 9). Examples of the cylinder (423) include a pneumatic cylinder and an electric cylinder with a servo function capable of torque control. If the structure is such that the descending stroke of the crimping press can be synchronized, it is possible to cope with non-constant elongation by using an air cinder using an atmospheric release direction control valve or the like or an electric cylinder capable of torque control.

Particularly preferable as the cylinder (423) is a pneumatic cylinder, which is a valve (5-port exhaust center type (atmosphere) that exhausts or depressurizes the inside of the pneumatic cylinder in synchronization with the extension start crimping height detecting means. An open type) directional control valve 463, etc.) is attached. By obtaining synchronization between the combination of the air cylinder and the pressure control valve and the crimping height, if the air cylinder is combined with the 5-port direction control valve of the exost center, a more advanced extension absorption mechanism can be obtained. When the crimping height at which the elongation of the core wire starts to occur due to crimping is reached, the crimping may be temporarily stopped, and at the same time, a signal may be output to the directional control valve, and then the crimping may be continued.

Furthermore, the front-back operation of the transfer clamp (21, 31) is changed from the ball screw drive (347, 348) to the electric cylinder with servo function, synchronized with the crimping height at which the core wire starts to stretch due to crimping, and the servo excitation is turned off or turned off. By reducing the torque, wire extension and absorption becomes possible. In this case, the structure becomes simpler than the rack and pinion structure of Patent Document 2.

The terminal crimping wire manufacturing apparatus (1) of the present invention includes a wire feeding section (11) for feeding the wire (W1) and a wire cutting section (15) for cutting the fed wire to an arbitrary length. And the wire coating stripping part (23, 33) that peels off the coating at the end of the wire (W2, W3), and the terminal crimping portion (27, 37) that crimps the terminal to the wire end that has been stripped of coating. , A terminal crimping wire manufacturing device including a clamp transport section (21.31) that clamps and transports an electric wire to each section, and the wire coating stripping section (23/33) is the wire coating stripping device (23). 33), or the terminal crimping portion (27.37) and the clamp transporting portion (21.31) constitute the terminal crimping device (300/400).

The method for manufacturing an end-treated electric wire of the present invention includes a step of feeding the electric wire, a step of cutting the fed electric wire to an arbitrary length, and a step of stripping the coating of the end portion of the electric wire. A method for manufacturing an end-treated electric wire comprising a terminal crimping step of crimping a terminal to the end of the wire whose coating has been peeled off, wherein the wire coating stripping device is used or the terminal is used in the coating stripping step. It is characterized in that the above-mentioned terminal crimping device is used in the crimping process.

As is clear from the above description, the wire coating stripping device of the present invention can maintain and improve the quality related to the wire coating stripping form by reliably removing the coating debris from the stripping blade. In addition, the waste chute (251) is surrounded by a tunnel structure and a covering waste removing member (241) to form an induction path for waste discharge, which also has the effect of preventing the coating waste from scattering.

The terminal crimping device of the present invention uses a telescopic urging member (323), a cylinder (423), or the like to absorb wire elongation during terminal crimping, so that wires of various sizes can be used without complicated synchronization control and sensing. It is possible to absorb wire elongation of different dimensions in terminal crimping. This makes it possible to improve the quality of the terminal crimping electric wire product without bending or buckling of the electric wire.

It is a top view which shows typically the whole structure of the terminal crimping electric wire manufacturing apparatus which concerns on embodiment of this invention. It is a perspective view which shows the structural outline of the electric wire coating stripping apparatus (with a scrap knocking-off mechanism) which concerns on embodiment of this invention. It is a schematic side view which shows the operation of the electric wire coating stripping apparatus of FIG. It is a schematic side view which shows the operation of the electric wire coating stripping apparatus of FIG. It is a perspective view which shows the deformation example of the scrap knocking-off mechanism of the electric wire coating stripping apparatus schematically. It is a side view which shows the outline of the whole structure of the terminal crimping machine / electric wire clamp lateral transport which concerns on embodiment of this invention. It is a figure which shows the structure of the main part of the electric wire extension absorption mechanism in the electric wire clamp lateral transport part of FIG. 6, (A) is the side sectional view around coil spring 323, (B) is the side sectional view around stop bolt 329. Is. It is a perspective view of the main part of the electric wire extension absorption mechanism of FIG. It is a side view for demonstrating the operation of the electric wire extension absorption mechanism. (A) is a diagram of an embodiment of the present invention, and (B) is a diagram illustrating a problem of the conventional technique. It is a side view which shows the outline of the whole structure of the terminal crimping apparatus 400 which concerns on other embodiment. It is an exploded perspective view which shows the structure of the extension absorption mechanism 420 of the terminal crimping apparatus 400 of FIG. It is a side view of the extension absorption mechanism 420 of FIG. It is a side view schematically showing the arrangement state of the electric wire feeding part 11, the clamp transport part 21/31, the electric wire cutting part 15, and the electric wire lead-out length measuring device 17 in the terminal crimping electric wire manufacturing apparatus which concerns on embodiment of this invention. be. The figure which shows the structure of the electric wire drawing length measuring apparatus provided with the 1st length measuring means 1780, 1783, 1790 and the 2nd length measuring means 2120, 2125 which concerns on embodiment of this invention. Is. (A) is a side view of the clamp transport portion 21, (B) is a front view of the second length measuring means 2120/2125, and (C) is a side view of the wire lead-out length measuring device 17. It is a block diagram of the measurement system of the electric wire lead-out length measuring device of FIG. It is a side view which shows typically the structure of the pull-out head retracting means (air cylinder 1716 etc.) in the electric wire pull-out length measuring device 17 which concerns on embodiment of this invention. It is a perspective view which shows the structural outline and operation of the electric wire rotating part 32 of the electric wire both ends terminal crimping apparatus which concerns on embodiment of this invention. (A) is a state in which the original portion WB of the electric wire W3 is inserted into the clamp 3201 of the electric wire rotating portion 32, and (B) is a state in which the rotating clamp 3201 is closed and the original portion WB of the electric wire is gripped. ) Is a state in which the electric wire W3 is rotated 90 ° counterclockwise, and (D) is a state in which the rotation clamp 3201 is opened and the electric wire W3 is deposited in the rear clamp transport unit 31. It is a figure which shows the specific structure of the electric wire rotating part 32 of FIG. 17, (A) is a side view, (B) is a front view. It is a side view of the crimping machine 2700 which concerns on embodiment of this invention. It is a front view of the crimping machine 2700 of FIG. It is a side view of the terminal crimping machine 2800 which improved the applicator exchange function. It is a top view of the terminal crimping machine 2800 of FIG.

W; Electric wire, WK; Covered part, W1; Wire to be sent, W2; Pre-cut wire, W3; Pre-cut wire T / T1 / T2; Terminal
11; Wire feeding part, 15; Wire cutting part, 17; Wire lead-in length measuring part, 20; Running rail,
21; Tip clamp transport section, 23; Wire coating stripping device (wire coating stripping section, tip coating stripping section),
25; Pre-inspection section, 27; Terminal crimping machine (terminal crimping section, tip terminal crimping section), 30; Travel rail,
31; rear clamp transport part, 32; wire rotating part,
33; Wire coating stripping device (wire coating stripping part, post-coating stripping part), 35; Post-inspection section
37; Terminal crimping machine (terminal crimping part, rear terminal crimping part), 41; Product receiving part
211; Clamp, 213; Clamp base, 215; Clamp opening / closing mechanism (air cylinder)
217; Clamp opening / closing mechanism base, 218; Stand, 219; Guided vertical air cylinder
231; Peeling blade (upper blade), 233; Peeling blade (lower blade), 237/238; Slider,
241; Coating debris removing member (plate), 241A / 241B / 241C; Coating debris removing member,
241x; claw member,
243; Drive means (actuator, air cylinder), 244; Air nozzle,
247; Vertical guide rail (column), 248; Peeling blade driving means (motor),
249; Ball screw with linear motion guide for opening and closing the peeling blade, 251; Waste chute
275; Crimper, 283; Anvil
300; Terminal crimping device
320; Stretch absorption mechanism, 321; Mount, 321r; Base plate, 321t; Spring accommodating hole,
321w; rear end face, 321x; female screw
323; Telescopic urging member (coil spring)
327; urging force adjustment member (adjustment bolt), 327b; front end, 327f; central part
328; locknut,
329; Stop bolt, 329b; Male screw, 329f; Cylindrical part, 329h; End face,
329j; Hexagon socket head (head),
331; Bolt implant plate, 331g; Through hole, 331k; Rear side
333; Wire stretch absorption slider, 335; Guide, 341; Front and rear slide plate, 343; Slider
345; front and rear guides, 347; ball screws, 348; motors (clamp drive means),
351; Horizontal slide stand
400; Terminal crimping device, 411; Clamp, 419; Guided vertical air cylinder
420; Elongation absorption mechanism, 421; Stand, 423; Cylinder, 423b; Rod
429; Stop bolt (positioning bolt),
430; Plate bolt implant plate, 431g; Through hole, 432; Block,
433; Wire stretch absorption slider, 435; Guide,
445; front and rear guides, 448; motor (clamp drive means), 451; horizontal slide base
463; Directional control valve
WL; wire reel, 10; reel support
1000; Wire feeding / pulling length measuring device,
1110; Straightener, 1111/1113/1115/1117; Roller, 1501; Blade
1701; Clamp, 1705; Drawer head,
1710; Overload escape slide stand, 1711; Overload escape rail
1716; Retracting means (air cylinder), 1716b; Rod side chamber; 1717; Cylinder rod,
1718; piston, 1718c; rear surface, 1719; pressure control valve, 1720; air piping,
1723; operation detection means (magnetic sensor), 1731; moving table
1770; head moving means, 1771; head moving rail,
1780; Moving belt (timing belt), 1783; Drive pulley, 1784; Driven pulley
1790; mobile motor, 1795; encoder, 1798; length difference calculation means
2101/2103; Clamp piece,
2120; Auxiliary length measuring roller, 2123; Air cylinder, 2125; Tachometer (encoder),
2130; Wire tunnel
2141; Wire guide horizontal roller, 2145; Wire guide vertical roller,
3101; Clamp piece
WB; The base of the wire W3
31; rear clamp transport section, 3101; transport clamp, 3102; stand
32; Wire rotating part, 3201; Rotating clamp, 3201b ・ c; Clamp piece,
3201g; mountain, 3201j; valley,
3203; Clamp opening / closing mechanism, 3207; Rotating cylinder, 3211; Frame, 3220; Rotating means of opening / closing mechanism, 3221; Large pulley, 3223; Timing belt, 3225; Small pulley, 3227; Rotating motor
AP; Applicator, APE; End Feed Applicator,
APS; Side feed applicator
2700; Terminal crimping machine, 2701; Ram, 2703; Ram bolt, 2707; Shank
2711; Crimper (upper type), 2715; Terminal feed mechanism
2721; Anvil (lower type), 2724; Anvil holder, 2727; Applicator base
2731; Lamb holder (upper tie bar), 2731h ・ m; Both left and right sides
2734; Tie rod (guide rod, post), 2735; Bush,
2739; Slide rail, 2739b; Rail groove, 2739c; Enapplicator mounting base
2739t; side
2741; Applicator stand (lower stand), 2741h ・ m; Left and right sides, 2741x; Operating position
2742 ・ 2743 ； Base fixing claw, 2742b ・ 2743b ； Surface
2745; Rod guide, 2750; Window,
2751; driven pulley, 2754; belt, 2757; drive pulley
2761; Bearing holder, 2764; Bearing (bearing box),
2767; Nut holder (lower tie bar) ,, 2767h ・ m; Both left and right sides
2771; Feed nut (nut box), 2781; Feed screw,
2791; motor reducer, 2794; motor
2800; Terminal crimping machine, 2821; Rail
2823; Slide rail (side table), 2823b; Rail groove, 2823y; Standby position,
2831; gantry,
2871; slide rail, 2871b; rail groove, 2871t; rear end, 2871y; standby position

Good form for carrying out the invention

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each figure, the front-rear direction is the axial direction of the electric wire W, the left-right direction (horizontal direction) is the direction in which the electric wire clamp transport portion holds the electric wire W sideways, and the vertical direction is the elevating direction of the crimping crimper and the coating peeling upper blade. (Not limited to the direction of earth gravity).

First, with reference to FIG. 1, the overall configuration of the terminal crimping wire manufacturing apparatus for thick materials according to the embodiment of the present invention will be described.
The terminal crimping wire manufacturing apparatus 1 includes the following parts.
Wire feeding unit 11; Wire W1 is fed vertically from a bundle of wires wound in a roll (not shown).
Cutting part 15; Cuts the wire W1 to be fed, and determines the length of the cutting wire W3.
Wire lead-in measuring section 17; The wire that has passed through the cutting section 15 is pulled in the forward direction. Stop at the position corresponding to the length of the terminal crimping wire to be the product, and cut the rear end of the wire. The wire cut at both ends is called the cut wire W3.

Tip clamp transport section 21; Clamps the end of the wire (lead cutting wire) W2 and transports it in the lateral direction. The wire W2 is transported to the left from the wire feeding position L0 to the crimping position L-3, and then returns to L0.
Travel rail 20; The clamp transport unit 21 travels.
Pre-coating peeling portion 23; The coating of the electric wire W2 whose front end is cut is peeled off.
Pre-inspection unit 25; Inspects the state of peeling of the coating on the tip of the wire.
Crimping portion 27 of the tip terminal; Crimping the terminal T1 to the tip of the electric wire W2.

Rear clamp transport unit 31; Clamps the front and rear cutting wire W3 and transports it in the lateral direction. The wire W3 is received at the position of the wire lead-in portion 17 (wire feeding position L0), transported to the right to the crimping position L4, the wire W3 is passed to the product receiving portion 41, and then returns to L0.
Travel rail 30; The rear clamp transport unit 31 travels.

Wire rotating part 32; Rotate the rear end of the wire around the center of the shaft, and adjust the crimping position (posture) around the shaft of the rear end terminal to the specified position.
Rear coating stripping portion 33; Strips the coating of the electric wire W3 whose rear end is cut.
Post-inspection unit 35; Inspects the state of peeling of the coating on the rear end of the wire.
Rear terminal crimping part 37; Crimp terminal T2 to the rear end of electric wire W3.
Product receiving part 41; Receives the payout of product electric wires with terminals crimped on both ends.

The coating stripping devices 23 and 33 will be described with reference to FIGS. 2 to 4. The direction shown in FIG. 2 is for the pre-coating peeling (peeling) portion 23. As shown in each figure, the coating stripping devices 23 and 33 have an upper blade 231 and a lower blade 233 for making a cut in the coating of the electric wire. In this embodiment, both the lower blade 233 and the upper blade 231 can move up and down. Specifically, the upper blade 231 is attached to the side portion of the upper slider 237, and the lower blade 233 is attached to the side portion of the lower slider 238. Both sliders 237 and 238 are driven up and down along the vertical guide rail (column) 247 by a ball screw 249 with a linear motion guide for opening and closing the peeling blade and its motor (peeling blade driving means) 248. Here, the upper half and the lower half of the ball screw 249 are cut with screws (left-handed screw and right-handed screw) opposite to the twisting direction, and the rotation of the ball screw 249 causes the sliders 237 and 238 to separate from each other. (Blade open) or driven in a direction closer to each other (blade closed).

On the side surface of the upper slider 237 (the surface on the right side in FIG. 2), a dust removing member (plate) 241 for knocking off covering dust and a vertical drive actuator (air cylinder) 243 thereof are attached. These operations will be described below. Below the scrap removing plate 241 is provided a scrap chute 251 for guiding the dropped dust. Further, although not shown in FIG. 2, an air nozzle for applying an air flow to the covering debris is also provided.

The operation of the coating stripping devices 23 and 33 will be described with reference to FIGS. 3 and 4. It should be noted that FIGS. 3 and 4 are schematic views, and there is no shape / dimension consistency with FIG. 2.
FIG. 3A shows the peeling blades 231 and 233 in the initial position where the blades are open, and the end of the electric wire W is inserted between the blades. The scrap drop plate 241 is in a raised state.

FIG. 3B shows a state in which the peeling blades 231 and 233 are closed and the electric wire W is sandwiched. The cutting edge of both blades is cut into the coating of the electric wire W. The closed positions of the peeling blades 231 and 233 are selected and positioned by the servo control of the motor (peeling blade driving means) 248 at the positions corresponding to the thickness of the electric wire W and the thickness of the coating. In the case of a thick electric wire W, the shape of the cutting edge differs depending on the type of the electric wire W.

FIG. 3C shows a state in which the peeling blades 231 and 233 are slightly opened from the state in FIG. 3B, and the electric wire W is pulled in a direction away from the blades 231, 233 (pullback state). The wire W is pulled by the clamp transport portions 21 and 31 (see FIGS. 1 and 6 (described later)) that move in the axial direction of the wire W while the wire W is clamped. As a result, the portion of the wire coating (covering waste WK) beyond the blades 231, 233 (on the left side of the figure) is separated from the tip of the wire W and remains on the left side of the blade. The core wire WC is exposed at the tip of the drawn wire W.

In FIG. 4 (D), after the coating scrap WK is separated from the electric wire W, the peeling blades 231 and 233 are slightly opened from the state of FIG. 3 (C), and the upper and lower blades 231 and 233 are half-opened. .. In this state, the coating waste WK is in the form of being sandwiched between the upper and lower blades 231, 233. Here, the waste removing plate 241 is moved up and down several times to knock off the covering waste WK. Cover debris WK falls on chute 251. At the same time as the operation of the debris removal plate 241, an air flow is applied to the covering debris WK from the air nozzle 244. The reason why the coating debris WK is dropped with the upper and lower blades 231 and 233 half-opened is to consider the air cylinder stroke position of the drive means (actuator, air cylinder) 243 that drives the debris removal plate 241. Is.

After that, as shown in (E), the upper blade 231 and the lower blade 233 are opened to the initial positions, and the electric wire W after the coating is peeled off is conveyed to the subsequent process.

FIG. 5 is a perspective view schematically showing a modified example of the scrap scraping mechanism of the electric wire coating stripping device.
The scrap removing member 241A of FIG. 5A is a small scrap removing plate 241 attached with a rod shape or a protrusion shape. The operation is driven up and down in the same manner as the above-mentioned debris removing plate 241 to strip off the covering debris. The advantage of this rod-shaped or protrusion-shaped dust removing member 241A is that the coating is knocked off from diagonally above by installing the dust removing member 241A at a position slightly deviated from the covering center position, and the upper blade 231 or the lower It becomes easy to remove the covering debris that has bitten on the blade 233.

The dust removing member 241B of FIG. 5B is a tapered member, and the portion where the covering dust hits is thick. The operation is driven up and down in the same manner as the above-mentioned debris removing plate 241 to strip off the covering debris. The advantage of this tapered debris removing member 241B is that it starts to hit the biting covering debris from the side portion and is dropped along the angle of the taper, which makes it equally easy to remove the covering debris.

The dust removing member 241C of FIG. 5C is a chuck type and includes a pair of claw members 241x that open and close, and a mechanism for moving the claw member 241x. The coating debris is grasped by the chuck and peeled off from the peeling blade, and the coating debris is carried to the chute or the suction part, where the chuck 241x is opened to carry away the coating debris.

The above-mentioned peeling blade driving means (248) controls the opening / closing position of the upper and lower peeling blades, particularly the amount of cut of the peeling blade into the coating and the position control of the half-opened state shown in FIG. 3C can be adjusted for each wire size. It is preferable to use a possible servo mechanism. Further, it is preferable that the wire insertion mechanism of the clamp transport portions 21 and 31 (specifically, the front-rear slide motor 348 (FIG. 6)) also uses a servo mechanism. This enables precise control of strip length adjustment, coating peeling operation, and crimping position adjustment.

The terminal crimping machine / electric wire clamp lateral transport device according to the embodiment of the present invention will be described with reference to FIGS. 6 to 9. FIG. 6 is a side view showing an outline of the overall configuration of the device. FIG. 7 is a side sectional view showing the configuration of the extension / absorption mechanism for the lateral transport of the electric wire clamp of FIG. FIG. 8 is a perspective view of the extension absorption mechanism of FIG. 7. FIG. 9 is a schematic side view for explaining the operation of the extension absorption mechanism of FIG. 7. 9 (A) is a diagram of an embodiment of the present invention, and FIG. 9 (B) is a diagram illustrating a problem of the conventional technique.

This device, whose overall configuration is shown in FIG. 6, is composed of terminal crimping portions 27 and 37 and clamp transport portions 21 and 31.
As shown in FIG. 9, the terminal crimping portions 27 and 37 crimp the terminal T to the end portion of the electric wire W whose coating has been peeled off. The terminal crimping portions 27 and 37 have a crimper 275 which is an upper and lower caulking tool for raising and lowering, an anvil 283 which is a fixing lower tool, and the like.

The clamp devices 21 and 31 include a clamp 211 for gripping the electric wire W and a mechanism 215 for opening and closing the clamp. The clamp base 213 on which the clamp 211 is mounted is mounted on the clamp opening / closing mechanism 215, and the clamp opening / closing mechanism 215 is attached to the clamp opening / closing mechanism base 217 including the vertical sinking mechanism at the time of crimping. The clamp opening / closing mechanism base 217 is fixed to the gantry 218. The gantry 218 is mounted on the gantry 321 of the wire elongation absorption mechanism 320 via a guided vertical moving air cylinder 219.

The gantry 321 of the wire elongation absorption mechanism 320 is mounted on the wire elongation absorption slider 333, and can slide slightly in the front-rear direction on the guide 335 and the front-rear slide plate 341. The electric wire elongation absorption mechanism 320 is one of the characteristic portions of the present invention, and will be described in detail later with reference to FIGS. 7 and 8 and 9.

The front-rear slide plate 341 is mounted on the slider 343 (see FIG. 8) and can slide along the front-rear guide 345 extending in the front-rear direction. The slider 343 is driven by a ball screw 347 and a motor 348. The front-rear guide 345 is mounted on the horizontal slide base 351 and can move along the rails 20 and 30 extending in the lateral direction (see also FIG. 1).

As shown in FIG. 7, the electric wire elongation absorption mechanism 320 includes main parts such as a coil spring 323 and an adjusting bolt 327 thereof, in addition to the above-mentioned pedestal 321 and slider 333.
The coil spring 323 is housed in a spring accommodating hole 321t carved into the base plate 321r of the gantry 321. The spring accommodating hole 321t extends in the front-rear direction, and the rear end is open to the rear end surface 321w of the base plate 321r.

The head (front end portion 327b) of the spring adjusting bolt 327 enters the portion near the rear end of the spring accommodating hole 321t and abuts on the rear end of the coil spring 323. The central portion 327f in the front-rear direction of the adjusting bolt 327 is screwed into the female screw 331f of the bolt implant plate 331. As shown in FIG. 6, the bolt implant plate 331 is fixed to the rear end portion of the front-rear slide plate 341 so as to stand up. When the bolt 327 is screwed into the female screw 331f and the bolt 327 is advanced forward, the coil spring 323 is compressed. A lock nut 328 is also screwed into the bolt 327, and the position of the bolt 327 in the front-rear direction can be fixed.

As shown in FIG. 8 for easy understanding, two stop bolts 329 are provided on the left and right sides of the spring adjusting bolt 327. As shown in FIG. 7B, the stop bolt 329 has a male screw 329b cut in the front side portion, the rear end portion is a hexagon socket head portion (head) 329j, and the middle portion is a cylindrical portion 329f. There is. The front male screw 329b of the stop bolt 329 is screwed into the female screw 321x formed at the rear end of the base plate 321r of the gantry 321. As a result, the bolt 329 is fixed so as to extend rearward from the end face 321w of the base plate 321r.

The intermediate cylindrical portion 329f of the stop bolt 329 penetrates through the through hole 331g formed in the bolt implant plate 331 in a non-contact state. In the state of FIG. 7, the front end surface 329h of the head 329j of the stop bolt 329 is in contact with the rear side surface 331k of the bolt implant plate 331. This is because the base plate 321r is urged to the front side by the compressive force applied to the coil spring 323, and this urging force acts to pull the stop bolt 329 fixed to the base plate 321r to the front side. Because it is doing. After all, the stop bolt 329 sets the forward limit of the base plate 321r. The advance limit of the base plate 321r ultimately determines the insertion position of the front end of the electric wire W into the terminal crimping portions 27 and 37. When the clamp 211 is pushed by the extending electric wire and the coil spring 323 contracts at the time of crimping the terminal, the stop bolt 329 retracts by the amount of the contraction.

When the spring adjusting bolt 327 is screwed (advanced) in the state of FIG. 7, the coil spring (expansion / contraction urging member) 323 is compressed and the urging force (set load at the start of expansion / contraction) becomes stronger. On the other hand, when the spring adjusting bolt 327 is pulled out (reverse), the coil spring 323 expands and the urging force (set load at the start of expansion and contraction) becomes weak. As will be described next with reference to FIG. 9, the clamp 211 that grips the electric wire is pushed to the rear side by the electric wire elongation at the time of crimping the terminal, and the pushing force is transmitted to the gantry 321. When the pushing force exceeds the above-mentioned set load of the coil spring 323, the spring 323 contracts and the gantry 321 and the clamp 211 retract (the extension absorption slider 333 slides back on the guide 335).

The operation of the electric wire extension / absorption mechanism will be described with reference to FIG. 9. (A) is a diagram of an embodiment of the present invention, and (B) is a diagram illustrating a problem of the conventional technique. In the conventional technique of (B), since the retracting mechanism of the clamp 211 does not exist, the electric wire W is bent in a V shape in the upper part of the figure due to the influence of the electric wire extension at the time of crimping. On the other hand, in the embodiment of the present invention of (A), since the retracting mechanism of the clamp 211 exists, the clamp 211 retracts by the amount of extension of the electric wire at the time of crimping, so that the electric wire W does not bend.

Next, the terminal crimping device 400 according to another embodiment of the present invention will be described with reference to FIGS. 10, 11, and 12. FIG. 10 is a side view showing an outline of the overall configuration of the terminal crimping device 400. FIG. 11 is an exploded perspective view showing the configuration of the extension absorption mechanism 420 of the terminal crimping device 400 of FIG. FIG. 12 is a side view of the extension absorption mechanism 420 of FIG.

The apparatus 400, whose overall configuration is shown in FIG. 10, is composed of terminal crimping portions 27 ′ and 37 ′ and clamp transport portions 21 ′ and 31 ′. The terminal crimping portions 27'and 37' of this device 400 have the same configuration and function as the terminal crimping portions 27 and 37 of FIG. In the clamp transport portions 21 ′ and 31 ′ of this device 400, the portion indicated by the reference numeral obtained by adding 100 or 200 to the reference numeral in FIG. 6 is a portion having the same function. The specific correspondence is as described in the column of the description of the reference numeral.

The electric wire elongation absorption mechanism 420, which is a feature of the present embodiment, synchronizes with the elongation start crimping height detecting means for detecting that the crimping height at which the core wire of the electric wire starts to be elongated by terminal crimping is reached. It has a cylinder 423 that allows the clamp 411 to retract. The extension start crimping height detecting means is a lowering position detector of the vertical drive mechanism of the crimpers (275, see FIG. 9) of the crimping portions 27'and 37'. When the vertical drive mechanism is a servo press method, the descent position of the crimper can be grasped by the rotation position (encoder) of the drive motor. The extension start crimping height can be grasped for each type and size of the electric wire, and the value can be stored in the controller of the device.

The cylinder 423 is an air cylinder 423 in this embodiment. A pneumatic regulator 461 and a 5-port exhaust center type (air release type) directional control valve 463 are connected to the air cylinder 423 via a pneumatic pipe (schematically shown by an alternate long and short dash line). The directional control valve 463 releases both the chamber on the rod 423b side and the chamber on the opposite side of the rod 423 in the pneumatic cylinder 423 to the atmosphere by the signal of the extension start crimping height detection. As a result, the air cylinder 423 can move in the direction of the force applied to the rod 423b.

That is, when the force accompanying the extension of the electric wire is applied so as to retract the clamp 411, the rod 423b of the cylinder 423 contracts by ΔS shown in FIG. Then, the block 432 and the clamp 411 connected to the block 432 can be retracted by that amount. In this embodiment, when the crimping height at which the core wire elongation starts due to crimping is reached, the crimping is temporarily stopped, and at the same time, a signal is output to the directional control valve 463, and then the crimping is continued. Is.

The stop bolt (positioning bolt) 429 shown in FIG. 11 has the same structure and function as the stop bolt 229 of FIG. The left and right through holes 431 g of the plate 430 have the same structure and function as the through holes 331 g of the bolt implant plate 331 of FIG. The hole 430f in the center of the plate 430 is a through hole in which the rod of the cylinder moves freely. Further, bolts and the like for attaching the block 432 and the cylinder rod 432b are not shown in FIG.

As a modification of the extension absorption mechanism, the transfer clamps 21 and 31 are changed from ball screw drive 347/348 to an electric cylinder with a servo function using thrust adjustment pressure control, synchronized with the crimp lower limit position, and servoed. It is also possible to extend and absorb the electric wire by turning off the excitation or reducing the torque. In this case, the structure is simpler than the rack and pinion structure of Patent Document 2.

The wire lead-out length measurement of the terminal crimping wire manufacturing apparatus according to this embodiment will be described.
For thick electric wires, it is difficult to sufficiently remove the winding habit of the electric wire due to the following circumstances, and it is also difficult to measure the length of the electric wire cut. That is, since the weight per unit length of the electric wire becomes heavy, in the feed roller method which is the conventional method, slip occurs between the roller surface and the electric wire covering surface when the load becomes large, and the feed amount on the roller side and the actual feed amount are actually fed. An error is likely to occur in the length of the wire. Further, since the friction coefficient and the weight change greatly depending on the characteristics such as the material of the coating of the electric wire and the conductor configuration inside the electric wire, the electric wire length error is likely to occur as described above. Further, depending on the reel-shaped packaging state of the electric wire, the outer diameter of the electric wire coating changes, and the gripping position of the roller changes, so that an error is likely to occur.

Therefore, it is necessary to devise to pull out the electric wire accurately by the desired length (extend it to the length). In recent years, electric vehicles and hybrid cars have become widespread, and as power wires for automobile wire harnesses have become thicker, the demand for their length and dimensional accuracy has become more and more stringent.

An object of the present invention is to solve one or more of the following problems relating to a thick electric wire.
A) Improved wire length and dimensional accuracy.
B) Abnormal wire length can be detected automatically.
C) Prevent equipment abnormalities and detect product abnormalities when excessive wire pulling force is applied.

The wire drawing length measuring device of the present invention is a device for pulling out an electric wire (W2) and measuring the drawing length thereof, and has a clamp (1701) for gripping the tip portion (WT) of the electric wire (W2). , The drawer head (1705) for pulling out the electric wire, the head moving means (1770) for moving the head in the pulling direction, and the first length measuring means (1780, 1783) for measuring the moving length of the head (1705). 1790), the second length measuring means (2120/2125) for measuring the drawn length of the electric wire (W2), and the length difference calculating means for calculating the difference between the measured values of both measuring means. It is characterized by having (1798) and.

In the electric wire lead-out length measuring device of the present invention, the first length measuring means has a moving motor (1790) of the head moving means (1770) and an encoder (1795) for detecting the amount of rotation thereof. The second length measuring means may have a length measuring roller (2120) that is pressed against the electric wire (W2) and rotates, and a tachometer (2125) that detects the amount of rotation thereof.

If the wire W2 is curved more than expected, the length measurement value of the second length measuring means may be considerably longer or shorter than the length measuring value of the first length measuring means. .. At that time, the operator confirms it as an abnormality and takes measures such as adjusting the equipment. It is also preferable to display, notify, alarm, and / or stop the device when the difference between the measured values of both length measuring means exceeds the standard.

One electric wire end treatment device of the present invention includes an electric wire feeding part (11) for feeding an electric wire (W1), an electric wire cutting part (15) for cutting the supplied electric wire (W2), and the above-mentioned electric wire. A pull-out length measuring device, a clamp transport unit (21) that clamps an electric wire (W2) and laterally conveys it in a direction intersecting the feeding direction of the electric wire, and an end processing unit that processes the end of the cut electric wire. (23, 25, 27), and the second length measuring means is arranged in the clamp transport portion (21).

The other wire end treatment device of the present invention has a straightener (1110) for correcting the winding habit of the wire, and has a wire feeding unit (11) for feeding the wire (W1) and a wire fed. A wire cutting portion (15) for cutting and a drawer head (1705) having a clamp (1701) for gripping the tip portion (WT) of the cut wire (W2) at the tip are provided, and the wire (W2) is desired. The wire pull-out length measuring section (17) is provided with an electric wire pull-out length measuring section (17) and an end processing section (23, 25, 27) for processing the end of the cut wire. It is provided with a head moving means (1770) for moving the drawer head (1705) in the pulling direction and a length measuring means (1780, 1783, 1790) for measuring the moving length of the head (1705), and the electric wire is pulled out. Occasionally, tension is applied to the wire between the straightener (1110) and the drawer head (1705).

In this wire end treatment device, tension can be applied to the wire between the straightener (1110) and the drawer head (1705) to suppress slack such as bending of the wire. Therefore, there is almost no difference between the moving length of the drawer head (1705) and the length of the wire actually pulled out, and the wire of the correct length can be pulled out.

The other wire drawing length measuring device of the present invention has a clamp (1701) for gripping the tip portion (WT) of the wire (W2), and has a drawer head (1705) for pulling out the wire (W2) and the head. The pulling force applied to the head moving means (1770) for moving in the pulling direction, the length measuring means (1780, 1783, 1790) for measuring the moving length of the head, and the pulling head (1705) becomes equal to or higher than a predetermined value. In this case, the drawer head is provided with a retracting means (1716) for releasing the drawer head in the counter-drawing direction.

The retracting means may include an air cylinder (1716) and a pressure regulating valve (1719) thereof. The air cylinder urges the head in the pull-out direction, and when the pull-out force becomes larger than the force of the air cylinder, the air cylinder moves in the counter-pull-out direction to release the head. Further, a means (1723) for detecting the operation of the evacuation means (1716) can be further provided.

The wire is pulled out by overcoming the resistance of the straightener and the like. When the wire pull-out resistance becomes excessive due to reasons such as the wire winding being too strong, the head is released in the counter-drawing direction. Then, the operator confirms the electric wire and the device. Alternatively, as an overload of the electric wire drawing, a display and a warning are given when the equipment is stopped. Then, measures such as inspection of the electric wire straightening part and the feeding device of the electric wire reel are taken.

The other wire end treatment device of the present invention includes a wire feeding section (11) for feeding the wire (W1), a wire cutting section (15) for cutting the fed wire, and a wire with a cut tip. A wire lead-out measuring section (17) having a drawer head (1705) having a clamp (1701) for gripping the tip portion (WT) of (W2) and pulling out the electric wire (W2) to a desired length, and after cutting. Clamp transport section (21) that clamps the wire (W2) of the wire and transports it laterally in the direction intersecting the feeding direction of the wire, and end processing section (23, 25,) that processes the end of the cut wire. 27), and the clamp transport portion (21) has two pairs of clamp pieces (2101, 2103) arranged in the front-rear direction for gripping the tip portion of the electric wire (W2), and the drawer head. The clamp (1701) of (1705) is characterized in that the tip portion (WT) of the electric wire (W2) is gripped between two pairs of clamp pieces (2101, 2103) of the clamp transport portion (21). ..

Two pairs of clamps arranged in the front-rear direction for gripping the tip of the wire (W2) of the clamp transport portion (21) cut between the rear end of the leading wire and the tip of the trailing wire. At that time, the electric wire is gripped. After that, the clamp of the drawer head grips the top (WT) of the electric wire (W3) between the two pairs of clamps of the clamp conveying portion (21), and the clamp of the clamp conveying portion (21) releases the electric wire. After that, the drawer head pulls out the electric wire. The clamp of the drawer head grips and pulls out the electric wire in a stable posture without bending, which is gripped by the two pairs of clamps of the clamp transport portion (21). Therefore, since the gripping position of the clamp of the drawer head is as planned, the length accuracy of the electric wire can be kept high.

In FIGS. 13 to 16, the meanings of the symbols of the electric wires are as follows. The "electric wire W1" is a portion between the tip of the reel WL and the tip clamp transport portion 21. The "electric wire W2" is a portion where the tip is cut, and when the rear end is cut next, it becomes the next electric wire W3. "Electric wire W3" is an electric wire with both ends cut off. "Electric wire W" is a general term for electric wires including each part of the electric wire.

The overall configuration of the electric wire feeding / pulling out length measuring device 1000 will be described with reference to FIG. The electric wire W is in the form of a wound reel (electric wire reel WL) and is set on the reel support 10 on the original side of the device. The reel support 10 rotatably holds the core of the reel WL. An electric wire feeding unit 11 is provided at the tip of the reel WL. The wire feeding unit 11 includes a straightener 1110. The straightener 1110 is a well-known method, and has a plurality of rollers 1111, 1113, 1115, and 1117 that sandwich the electric wire W1 vertically and horizontally, and corrects the winding habit of the electric wire.

A tip clamp transport portion 21 is provided on the tip side of the straightener 1110. Please refer to FIGS. 1, 6, 10 and their explanations for the overall operation and structure of the clamp transport unit 21. Two clamp pieces 2103 and 2101 are arranged on the tip clamp transport portion 21 of this embodiment with a distance in the front-rear direction. The clamp piece grips the electric wire W2.

An electric wire cutting portion 15 is arranged on the tip side of the tip clamp transport portion 21. The portion 15 has a blade 1501 for cutting an electric wire. The electric wire cutting portion 15 is lowered except when the electric wire is cut, so that unnecessary contact between the blade 1501 and the electric wire W2 is avoided.

A wire lead-out length measuring device 17 is provided above the tip clamp transport section 21 and the wire cutting section 15. The device 17 includes a drawer head 1705 having a clamp 1701 for gripping the tip portion WT of the electric wire W2 and pulling out the electric wire, and a head moving means 1770 (see FIG. 14C) for moving the head in the drawing direction. The drawer head 1705 receives the tip portion of the electric wire W2 from the clamp pieces 2103 and 2101 of the front clamp transport portion 21, and pulls out the electric wire of a desired length to the front side. The details will be described later with reference to FIG.

A rear clamp transport portion 31 is provided on the front side of the cut portion 15. The clamp piece 3101 of the same portion 31 grips the front end portion of the electric wires W2 and W3. When the cutting portion 15 cuts the electric wire W2, both the front clamp transport portion 21 and the rear clamp transport portion 31 hold the electric wire W2. For the overall operation of the rear clamp transport unit 31, refer to FIG. 1 and its description.

Next, with reference to FIG. 14, the wire drawing length measuring device 1000 including the first length measuring means 1780, 1783, 1790 and the second length measuring means 2120, 2125 for measuring the length of the electric wire W will be described. .. As shown in FIGS. 14A and 14C, this device 1000 is largely composed of a tip clamp transport section 21 and a wire lead-out length measuring device 17. As shown in FIG. 13, the wire lead-out length measuring device 17 of FIG. 14 (C) is arranged on the upper side and the front side of the tip clamp transport portion 21 of FIG. 14 (A).

The tip clamp transport section 21 has a wire guide vertical roller 2145, a horizontal roller 2141, a wire through tunnel 2130, an auxiliary length measuring roller 2120, and a pair of clamp pieces from the original side (upstream side) to the front side (downstream side) of the electric wire. It has 2103, 2101, etc. The electric wire guide rollers 2145 and 2141 and the electric wire through tunnel 2130 prevent the electric wire W2 from slipping during lateral transportation such as in the crimping process, and clamp the electric wire W1 exiting the straightener 1110 (Fig. 13) straight in the front-back and up-down directions. It leads to the transport unit 21.

As shown in FIG. 14B, the auxiliary length measuring roller 2120 is composed of a pair (two sets) of opposing rollers 2120 and 2120'. Each roller is rotatable around its vertical axis. Above the rollers 2120 and 2120', air cylinders 2123 that drive in the direction of narrowing the distance between the two and in the direction of widening are provided. The rollers 2120 and 2120'are pressed against the side surface of the electric wire W2 by the air cylinder 2123, and rotate at the same speed by friction according to the movement of the electric wire W2.

The axis of one roller 2120 extends upward and is connected to the encoder 2125. These length measuring rollers 2120 and 2120', encoder 2125, and the like constitute a second length measuring means for measuring the drawn length of the electric wire W2. In the encoder 2125, the rotation of the encoder is in a semi-constrained state due to the wire gripping force of the clamps 2101 and 2103 and the pressing force of the cylinder 2123. Since the length is measured using the incremental function of the encoder, there is no problem even in a semi-constrained state.

The wire lead-out length measuring unit 17 has a drawer head 1705 that grips and pulls out the wire W2, a head moving rail 1771, a moving belt 1780, a moving motor 1790, and the like. The drawer head 1705 has a clamp 1701 at its lower portion that grips the tip portion WT of the electric wire W2. The clamp 1701 is driven to open and close by an opening / closing mechanism (built into the head 1705 such as an air cylinder) on the clamp 1701. The drawer head 1705 is supported by a moving rail 1771 so as to be slidable in the front-rear direction via an escape slide base 1710 (described later with reference to FIG. 16) and a moving table 1731.

The moving table 1731 is driven to travel in the front-rear direction by the timing belt 1780. A drive pulley 1783 and a driven pulley 1784 are engaged in front of and behind the timing belt 1780. The drive pulley 1783 is rotationally driven by the head travel motor 1790. The motor 1790 is a servo motor with a built-in encoder. The encoder-equipped motor 1790 constitutes the first length measuring means for measuring the moving length of the head 1705.

Next, the configuration of the measurement system of the wire lead-out length measuring device of FIG. 14 will be described with reference to the block diagram of FIG. In the upper left of this figure, the moving motor 1790 of the drawer head and the encoder 1795 built in the motor are shown. At the lower left of the figure, a length measuring roller 2120 that is pressed against a drawn wire and rotates, and an encoder 2125 that detects the rotation are shown. The rotation signals of the motor encoder 1795 and the roller encoder 2125 are sent to the wire length difference calculation means 1798 (composed of equipment such as a microcomputer). The wire length difference calculation means 1798 converts the signals from both encoders into two types of wire lead lengths, and calculates the difference between the two.

If the wire W2 is curved more than expected, the rotation length of the length measuring roller 2120 (of the second length measuring means) is larger than the traveling length of the drawer head 1705 (measured value of the first length measuring means). The measured value) may be longer. Alternatively, the second length measuring means may be considerably shorter. At that time, the operator confirms it as an abnormality and takes measures such as adjusting the equipment.
Further, when the difference between the measured values of both length measuring means exceeds the standard, display, notification, alarm, and / or device stop can be performed via the operation panel 1799.

Next, two pairs of clamp pieces 2101, 2103 of the tip clamp transport portion 21 shown in FIGS. 14 and 13 will be described. The clamp pieces are provided at a slight distance in the front-rear direction of the electric wire. Then, when the electric wire W2 is passed from the tip clamp transport portion 21 to the drawer head 1705, as shown in FIG. 14, the clamp 1701 of the head grips the top WT of the electric wire W2 between the two pairs of clamps. ..

The clamp piece 2101 on the front side has a structure in which the clamp 2101 descends downward so as not to interfere with the forward pull-out clamp 1701 when the electric wire is pulled out.

When cutting the boundary between the rear end of the leading wire (the part where the front and rear ends are cut first) and the tip of the trailing wire (the part where the front and rear ends are cut next), the clamp transport unit 21 The two pairs of clamp pieces 2101, 2103 hold the electric wire. After cutting the wire, the clamp 1701 of the drawer head 1705 grips the wire W2 between the two pairs of clamp pieces of the clamp transport portion 21, and the clamp of the clamp transport portion 21 releases the wire. After that, the drawer head 1705 pulls out the electric wire.

In this way, when the drawer head 1705 receives the electric wire W2, the electric wire W2 is gripped by the two pairs of clamp pieces 2101 and 2103 of the clamp transport portion 21, and is in a stable posture without bending. .. Therefore, the gripping position of the drawer clamp becomes a predetermined position as planned, which also leads to keeping the length accuracy of the electric wire high.

Next, with reference to FIG. 16, the drawer head retracting means in the wire drawing length measuring device according to the embodiment of the present invention will be described. A drawer head 1705 with a drawer clamp 1701 is mounted on an overload relief slide base 1710. The slide base 1710 is mounted on a moving table 1731 so that it can move in the front-rear direction along the overload escape rail 1711.

The escape slide table 1710 is urged forward by an air cylinder 1716 with respect to the moving table 1731. That is, the air cylinder 1716 is fixed to the moving table 1731, and the rod 1717 of the cylinder is connected to the slide base 1710. An air pipe 1720 is connected to the rod side of the air cylinder 1716. A pressure regulating valve 1719 is attached to the air pipe 1720, and the air of the pressure regulated by this valve 1719 is applied to the chamber 1716b on the rod side of the cylinder 1716 and the rear surface 1718c of the piston 1718 in the cylinder. ing.

In the normal state described below, the rod 1717 and the piston 1718 are in a state of being closer to the front side as shown in FIG. A magnetic sensor 1723 is arranged on the front side of the outer surface of the cylinder 1718. The position of the piston 1718 is grasped by this sensor 1723. At the time of the following abnormality, the piston 1718 moves relatively to the rear side, and this is detected by the sensor 1723.

The urging force of the cylinder 1716 is higher than the maximum pull output of the normal electric wire due to the resistance of the straightener 1110 (Fig. 13) and the resistance of the normal electric wire. That is, normally, the escape slide base 1710, the pull-out head 1705, and the clamp 1701 move in synchronization with the movement of the moving table 1731 to pull out the electric wire.

On the other hand, the pull-out force applied to the drawer head 1705 is specified due to an abnormal situation such as when the winding habit of the electric wire is too strong and the resistance becomes excessive, or when an electric wire transport failure occurs such as a failure of the reel support (electric wire supply device) 10. When the value exceeds the value, the rod 1717 is pulled out from the air cylinder 1716, and the escape slide base 1710 and the drawer head 1705 are retracted (released) in the opposite direction (rear) direction. Then, the above-mentioned magnetic sensor 1723 detects this and notifies the operator with an alarm or the like to prompt confirmation. Then, the operator checks the electric wire and the device, and takes measures such as removing the cause of the overload on the electric wire. As a result, it is possible to prevent the occurrence of defects due to a device failure or an electric wire abnormality.

An electric wire rotating portion placed between two terminal crimping machines of the terminal crimping electric wire manufacturing apparatus according to the present embodiment will be described.
In thick wires, the degree of freedom of twisting of the wire itself is low, and the gravity per unit length of the wire is heavy. Therefore, after crimping the terminals to both ends of the wire, the angle between the terminals at both ends (the longitudinal axis of the wire). The degree of freedom to adjust (change the angle) by twisting the wire may be low. In recent years, electric vehicles and hybrids have become widespread, and as power wires for automobile wire harnesses have become thicker, the demand for accuracy of the terminal angles at both ends has become more and more stringent.

Japanese Patent Application Laid-Open No. 2009-152104 (Patent Document 11, Sumitomo Wiring Systems) discloses a means for rotating an electric wire around an axis in a terminal crimping electric wire. FIGS. 3 and 4 of this document and paragraphs 0053 to 57 of the specification disclose the electric wire end rotating portion 33. However, the electric wire end rotating portion 33 of this document 11 is for adjusting the angle when the electric wire whose terminals have been crimped at both ends is hung on the electric wire holding bar 10 which is an electric wire storage jig, and the terminals at both ends of the electric wire. It does not twist the entire wire in the middle of crimping. That is, it does not correspond to the problem of adjusting (changing the angle) the angle between the terminals at both ends (around the longitudinal axis of the electric wire) by twisting the electric wire.

Similarly, Japanese Patent Application Laid-Open No. 2008-10375 (Patent Document 12, Japan Automatic Machine) discloses a means for rotating an electric wire around an axis in a terminal crimping electric wire. In FIGS. A wire harness manufacturing apparatus having a rotating mechanism 80B is disclosed. However, the electric wire rotation mechanism of this document 12 grips only the rear end portion of the electric wire whose terminal T is crimped to the tip, that is, the electric wire whose tip portion whose terminal is crimped is not restrained to rotate. It does not twist the whole thing. Therefore, an electric wire rotation mechanism is required at each of both ends of the electric wire.

Further, as a document disclosing the means for rotating the electric wire around the axis of the terminal crimping electric wire, there is Japanese Patent No. 5048885 (Patent Document 13, Japan Automatic Machine). FIG. 4 of this document discloses means 10 for adjusting the angle of the terminal around the wire axis direction. However, the angle adjusting means 10 of this document 13 is for adjusting the angle when an electric wire having crimped terminals at both ends is inserted into the connector housing, and the entire electric wire is in the intermediate stage of crimping the terminals at both ends of the electric wire. It does not twist. That is, it does not correspond to the problem of adjusting (changing the angle) the angle between the terminals at both ends (around the longitudinal axis of the electric wire) by twisting the electric wire.

Patent Document 11; Japanese Patent Application Laid-Open No. 2009-152104; Japanese Patent Application Laid-Open No. 2008-10375; Japanese Patent Application Laid-Open No. 13;

An object of the present invention is to solve one or more of the following problems relating to a thick electric wire.
A) It does not interfere with the process after crimping the terminals and improves work efficiency.
B) The angle of heavy heavy wires can be adjusted accurately in a short time.

The wire end terminal crimping device of the present invention has a wire feeding section (11) for feeding a wire (W1), a wire cutting section (15) for cutting the fed wire to an arbitrary length, and the wire. The tip coating peeling portion (23) for peeling the coating on the tip portion of (W2 / W3), the tip terminal crimping portion (27) for crimping the terminal to the coating stripped tip portion, and the electric wire (W2 / W3). The rear end coating stripping part (33) that peels off the coating at the end of the wire, the rear end terminal crimping portion (37) that crimps the terminal to the stripped wire end, and the wire is clamped and transported to each part. An electric wire having a clamp transport portion (21, 31) and a terminal T crimped to the tip provided between the tip terminal crimping portion (27) and the rear end terminal crimping portion (37). By grasping and rotating only the rear end portion, the entire wire (W3) is placed around the wire longitudinal axis by a desired angle while the tip portion to which the terminal is crimped is rotated and unconstrained. It is characterized by including a rotating electric wire rotating portion (32).

In the present invention, the electric wire axial rotation step is installed as a processing step on the rear side (tail side) of the electric wire, and after the desired electric wire axial rotation is performed with respect to the electric wire front side (top side), the rear side (tail side) ( Terminal crimping on the tail side) can be performed. When assembling a crimped wire in the next process of crimping terminals (housing insertion, etc.), it is difficult to twist the thick wire, and the posture of the crimped terminal is not free. If the rotation is performed and the crimping is performed, the work efficiency in the next process is improved.

Hereinafter, the electric wire end terminal crimping device according to the embodiment of the present invention will be described with reference to the drawings.
FIG. 17 is a perspective view showing an outline of the configuration and operation of the electric wire rotating portion 32 of the electric wire both end terminal crimping device according to the embodiment of the present invention. (A) is a state in which the original portion WB of the electric wire W3 is inserted into the clamp 3201 of the electric wire rotating portion 32, and (B) is a state in which the rotating clamp 3201 is closed and the original portion WB of the electric wire is gripped. ) Is a state in which the electric wire W3 is rotated 90 ° counterclockwise, and (D) is a state in which the rotation clamp 3201 is opened and the electric wire W3 is deposited in the rear clamp transport unit 31.
18 is a view showing a specific structure of the electric wire rotating portion 32 of FIG. 17, where FIG. 18A is a side view and FIG. 18B is a front view.

The electric wire rotating portion 32 includes a clamp 3201 for gripping the original portion WB of the electric wire W3, an opening / closing mechanism 3203 thereof, and a rotating motor 3227. In FIG. 17A, the portion of the electric wire W3 near the base portion WB is gripped by the clamp 3101 of the rear end clamp transport portion 31. The terminal T1 is crimped to the tip WT of the electric wire W3, and the tip of the terminal T1 lies on the right side of the figure. Then, the original WB of the electric wire W3 is inserted into the clamp 3201 of the electric wire rotating portion 32 in the open state.

FIG. 17B shows a state in which the rotation clamp 3201 is closed and the wire base portion WB is gripped. Then, after that, the transfer clamp 3101 is opened a little. Here, the front portion WT of the electric wire W3 lies on the base 3102 of the rear clamp transport portion 31, and there is nothing to clamp, grip, restrain, or rotate. From here, as shown in FIG. 17C, the rotation clamp 3201 is rotated 90 ° counterclockwise to rotate the electric wire W3. At this time, the tip of the tip terminal T1 of the electric wire W3 rises upward. As described above, in the electric wire rotating portion 32 of the present embodiment, only the rear end portion of the electric wire is gripped, and the tip portion to which the terminal is crimped is twisted in a non-rotating state.

Subsequently, as shown in (D), the transport clamp 3101 is closed and the rotary clamp 3201 is opened. After that, the rear end clamp transport section 31 transports the electric wire W3 to the rear cover peeling section 33 (see FIG. 1).

The specific structure of the electric wire rotating portion 32 of this embodiment will be described with reference to FIG. The rotating clamp 3201 has clamp pieces 3201b · c that are open vertically in FIG. Each clamp piece has 3201 g of shallow V-shaped crests, as shown in FIG. 18 (B). As shown in FIG. 18 (A), the mountain 3201 g has a thin plate shape in a side view, and is provided in a plurality of rows. There is a grooved valley 3201j between the adjacent mountains 3201g.

When the rotary clamp 3201 is closed, the head of the mountain 3201g (the pointed part of the left and right triangles in the front view) enters the valley 3201j. In this example, the mountain 3201g is provided with three pieces of the upper clamp piece 3201b and four pieces of the lower clamp piece 3201c. With such a structure in which a plurality of mountains and valleys enter, the electric wire W3 can be firmly gripped.

A clamp opening / closing mechanism 3203 composed of an air cylinder or the like is provided on the original side of the clamp 3201. A rotating cylinder 3207 is connected to the original side of the clamp opening / closing mechanism 3203. The rotary cylinder 3207 is rotatably held with respect to the frame 3211. A large pulley 3221 is attached to the original end of the rotating cylinder 3207. A timing belt 3223 is wound around the outer circumference of the large pulley 3221.

This timing belt 3223 is wound around the outer circumference of the lower small pulley 3225. This small pulley 3225 is attached to the shaft end of a rotary motor 3227 with a reducer. This rotation motor 3227 is a servo motor and can be stationary at an accurate rotation position and angle. As a result, it is possible to accurately determine the angle by grasping only the rear end portion and rotating the thick electric wire.

The terminal crimping machine of the terminal crimping electric wire manufacturing apparatus according to this embodiment will be described. A terminal crimping machine for a thick electric wire (for example, a stranded wire cross-sectional area of 8 to 20 sq mm ² ) for a wire harness of an automobile is required to have a large crimping force of about 70 KN or more. In recent years, electric vehicles and hybrids have become widespread, and power wires for automobile wire harnesses have become thicker. In addition, the demand for the accuracy of the terminal crimping shape is becoming more and more stringent. Therefore, the cantilever crimping machine frame, which has been generally used in the past, may have insufficient rigidity.

Utility model registration publication No. 2513288 (Patent Document 51) discloses a servo press in which the upper die 1 is supported by left and right posts (elevating frame 9). In the servo press of Patent Document 51, the ball screw shaft 6 and the screw portion 8 are arranged on the shaft core portion of the servo motor 4, and the motor 4 and the screw portion 8 are rotated to rotate the ball screw shaft 6 and the elevating frame. 9. The upper mold 1 is moved up and down. Since such a hollow structure direct drive servomotor is a custom-made product, the price is extremely high.

Further, in the servo press of Patent Document 51, the motor 4 is arranged between the left and right posts (elevating frame 9), and the screw portion 8 for raising and lowering the ball screw shaft 6 is directly driven by the motor 4. .. Therefore, a motor with a high output torque commensurate with the required thrust is required. For example, if a motor with a shaft torque of about 300 Nm is used, the outer diameter thereof becomes φ350 to φ450 mm, and the dimension between posts becomes wide.

The disadvantages of widening the post-post dimensions are as follows.
(A) Applicator stand (see reference numeral 2741 in FIGS. 19 and 20, also referred to as “bed surface”) depending on the size of the ram holder (see reference numeral 2731 in FIGS. 19 and 20, also referred to as “slide”). The accuracy such as parallelism with is reduced.
(B) Depending on the position where the concentrated load is generated, deflection is generated according to the size and rigidity of the slide, and the processing depends on the rigidity of the mold (applicator) used, which may shorten the life of the mold.
In the servo press of Patent Document 51, since the motor is arranged at the lower part between the left and right posts, there is also a problem that the maintainability at the time of motor failure is poor.

An object of the present invention is to solve one or more of the following problems relating to a servo press and a terminal crimping machine for a thick electric wire.
A) Standard and small motors can be used.
B) There are many options for the combination of motor and reduction mechanism.
C) The distance between the posts will not be wider than necessary, and the accuracy of the parallelism between the slide and the bed surface and the deflection under concentrated load will depend on the size and rigidity of the slide.
E) The applicator can be easily replaced and installed.

The servo press of the present invention includes an upper die (2711) which is a movable tool, a lower die (2721) which is a fixed tool facing the upper die, and an upper die driving means for driving the upper die (2711). The upper mold driving means is a press (2700) comprising a feed nut (2771) for linearly driving the upper mold, a feed screw (2781) screwed with the feed nut, and rotation of the feed screw. A motor (2794) that is a drive source and rotates around an axis that is deviated from the rotation axis of the feed screw, and a rotation transmission mechanism (2757,2754,2751) that transmits the rotation of the motor to the feed screw (2781). ) And.

The terminal crimping machine (2700) of the present invention includes a crimper (2711), which is a movable tool for crimping a terminal (T) to the end of an electric wire (W), and an anvil (2721), which is a fixing tool facing the crimper. A terminal crimping machine (2700) including a crimper driving means for driving the crimper (2711), wherein the crimper driving means linearly drives the crimper with a feed nut (2771), and the feed nut and a screw. The matching feed screw (2781), the motor (2794) that is the rotation drive source of the feed screw and rotates around the axis deviated from the rotation axis of the feed screw, and the rotation of the motor are the feed screw. It is characterized by being provided with a rotation transmission mechanism (2757,2754,2751) that transmits to (2781).

Specific embodiments of the servo press or terminal crimping machine of the present invention include a ram (2701) for driving the crimper or upper mold (2711), a ram holder (2731) for holding the ram, and a feed nut (2771). Connect each of the left and right side portions (2731h ・ m) of the ram holder (2731) and each of the left and right side portions (2767h ・ m) of the nut holder (2767). An applicator mount or mold mount on which two tie rods (2734L ・ R) and the anvil or lower mold (2721) are mounted, and the tie rods (guide rod, 2734) penetrate the left and right sides (2741h ・ m) of the two tie rods (2734L ・ R). (2741) and rod guide portions (2745L · R) fixed to the left and right side portions (2741h · m) of the gantry are provided.

A motor (2794) is placed next to a screw (2781), and rotation is transmitted to the screw by a rotation transmission mechanism such as a belt (2754). Therefore, it is not necessary to place the motor (2794) between the two posts (tie rod (2734)), and the distance between the posts can be narrowed. Therefore, the dimensions and deflection of the ram holder (2731, slide), applicator stand or mold stand (2741, bed surface) are reduced, and the shape accuracy of the crimp terminal is improved.

In addition, a wide range of motors with general shapes and specifications (torque, rotation speed, with reducer) can be selected. Further, since the screw (2781) can be formed so as not to rotate and move up and down, the height of the device can be suppressed.

Hereinafter, the terminal crimping machine according to the embodiment of the present invention will be described with reference to the drawings.
FIG. 19 is a side view of the crimping machine 2700 according to the embodiment of the present invention, and FIG. 20 is a front view thereof. In this crimping machine 2700, the terminal T is crimped to the tip of the electric wire W whose coating is partially peeled off. The crimping machine 2700 has a crimper 2711 which is a movable tool for crimping the terminal T, and an anvil 2721 which is a fixing tool facing the crimper.

Anvil 2721 is placed on the anvil holder 2724. Holder 2724 is placed on the applicator mount 2737 via the applicator base 2727. The anvil 2721, the crimper 2711, and the feed mechanism 2715 of the terminal T are assembled as an applicator AP for each terminal type and size. When changing the type or size of the terminal, replace it with the applicator AP.

The crimper 2711 is secured to the shank 2707 above it. The shank 2707 is suspended in engagement with the ram bolt 2703. The ram bolt 2703 projects onto the underside of the ram 2701 above it. The shank 2707 is part of the applicator AP and the ram bolt 2703 and ram 2701 are part of the body of the crimping machine (press).

The ram 2701 is block-shaped and is provided at the center of the lower surface of the ram holder (upper tie bar) 2731 so as to project downward. The ram holder 2731 is a thick strip-shaped member extending from side to side. Two tie rods 2734L / R (post, guide rod) hanging downward are fixed to the left and right sides of the ram holder 2731 at 2731h / m.

The tie rods 2734L / R extend downward on both outer sides of the applicator AP, penetrate the guide portion 2745 and extend further downward, reaching the left and right sides 2767h / m of the nut holder (lower tie bar) 2767, and the lower end thereof. It is fixed. In this crimping machine 2700, the upper and lower ram holders (upper tie bar) 2731 and nut holders (lower tie bar) 2767, and the left and right guide (tie) rods 2734L / R form a rectangular frame. Then, this frame is driven up and down, and the ram 2701 and the crimper 2711 move up and down.

The upper portion of the rod guide portion 2745 is fixed to the applicator mount 2741, and the lower portion thereof is fixed to the bearing holder 2761. The applicator stand 2741 is a mount on which the applicator AP is mounted. The bearing holder 2761 supports a bearing box 2764 including a bearing (not shown) that rotatably supports the feed screw 2781 described later, and is a thick strip-shaped member. These left and right rod guide portions 2745LR, applicator mount 2741, and bearing holder 2761 themselves have a strong structure and are firmly fixed to a support mount (not shown).

In the guide portion 2745, a bush 2735 that guides the guide rod 2734 up and down so as to be slidable is arranged.

The nut holder 2767 supports a nut box 2771 including a feed nut (ball nut) screwed into a feed screw 2781, which will be described later, and is a thick strip-shaped member.

The feed screw 2781 is a ball screw shaft extending vertically. A driven pulley 2751 is fixed to the upper end of the feed screw 2781. Below the driven pulley 2751 is the bearing box 2764 described above, in which the bearings rotatably support the feed screw 2781. The above-mentioned nut box 2771 is arranged under the bearing box 2764, and the ball nut in the nut box 2771 is screwed into the feed screw 2781.

When the feed screw 2781 is rotationally driven by the driven pulley 2751, the feed nut, nut box 2771, and nut holder 2767 move up and down. The feed screw 2781 only rotates, it does not move up and down.

A belt 2754 is engaged with the outer circumference of the driven pulley 2751. The belt 2754 extends rearward in FIG. 19 and engages the outer circumference of the drive pulley 2757. The drive pulley 2757 is fixed to the shaft of the motor reducer 2791. An integrated servomotor 2794 is provided under the motor reducer 2791. This motor / reduction gear is firmly fixed to a support frame (not shown).

In the crimping machine 2700 of this embodiment, as shown in FIG. 20, a bearing box 2764 that rotatably holds the feed screw 2781 on the opposite side of the applicator mount 2741 with the left and right rod guide portions 2745L / R sandwiched between them. , And a bearing holder 2761 is provided. A window 2750 is opened between the left and right rod guide portions 2745L / R and the upper and lower applicator mounts 2741 and the bearing holder 2761. The driven pulley 2751 described above is arranged in this window 2750. With such a structure, the height of the entire crimping machine is reduced while the rod guide portion 2745 is lengthened to prevent the rod 2734 from tipping over.

Another form of the terminal crimping machine 2800 will be described with reference to FIGS. 21 and 22.
FIG. 21 is a side view of the terminal crimping machine 2800 with an improved applicator replacement function, and FIG. 22 is a plan view. The front (front) and back (original) directions and the left-right directions in FIG. 22 correspond to the directions of the front terminal crimping portion 27 in FIG.

This terminal crimping machine 2800 is an application provided with a crimper (2711, see FIGS. 19 and 42) and anvil (2721) for crimping a terminal (T) to the end of an electric wire (W), and a terminal feed mechanism (2715). The applicator (AP), the crimper driving means for driving the crimper (2711), and the applicator mount (2741) on which the applicator (AP) is mounted are provided, and the upper surface of the applicator mount (2741) is provided. A slide rail (2739) that slides and guides the applicator (APS) is provided between the operating position (2741x) and the standby position (2823y) of the applicator.

Prepare the applicator to be used next on the slide rail (2739, 2871) or table (2823), pull out the applicator used so far on the slide rail or table, and then use the next applicator. The rail can be set on the crimping machine. Therefore, the time for stopping the crimping machine is shortened, and the operating rate of the crimping machine is increased.

The operating position (2741x) of the applicator is a position where the applicator (AP) is under the ram 2701 (see FIG. 20) of the main body of the crimping machine and crimps the terminal T to the end of the electric wire W. The standby position (2823y / 2871y) of the applicator is a position outside the crimping machine body that does not interfere with the crimping work, and then the applicator incorporated in the crimping machine (or taken out from the crimping machine) waits. It is the position where it is.

In this type of terminal crimping machine (2800), slide rails (2739, 2871) that slide guide the applicator (AP) are provided between the operating position (2741x) and the standby position (2823y, 2871y) of the applicator. Therefore, it is easy to take out and install the applicator. In addition, the applicator replacement work can be performed in a short time.

In the crimping machine (2800) of the present invention, it is preferable to provide two types of slide rails (2739, 2871), one for side feed and the other for end feed. Compatible with any type of applicator. The "side feed" is a method of feeding a strip-shaped terminal row in which a large number of terminals are lined up from the side of the crimping machine main body (direction intersecting the wire insertion direction), and the "end feed" is a terminal feed. It is a method of feeding from the vertical direction (direction along the wire insertion direction). When the crimping machine main body is a two-post type shown in FIG. 20, the slide rails (2739, 2871) may extend in a direction diagonally intersecting the line connecting the centers of the two posts.

In FIG. 21, the side feed applicator APS at the operating position 2741x is shown on the left side of the figure, and the side feed applicator APS'at the standby position 2823y is shown on the right side of the figure. The applicator APS in operating position 2741x rests on slide rail 2739 on the applicator mount 2741 via its applicator base 2727. On the other hand, the applicator APS'in the standby position 2823y is mounted on the slide rail (side table) 2823 on the gantry 2831 via the applicator base 2727.

Rail grooves 2739b and 2823b are engraved on the upper surface of the slide rail 2739 on the operating position 2741x side and the slide rail (side table) 2823 on the standby position 2823y side so as to extend in the left-right direction. The applicator APS is slidable (push and slide by hand) along the rail grooves 2739b and 2823b.

As shown in FIG. 21, the applicator base 2727 at the operating position 2741x is fixed by being pressed by the base fixing claws 2742 and 2743 at its left and right ends. Each of the fixed claws 2742 and 2743 has an inclined surface whose surfaces 2742b and 2743b on the side of the applicator base 2727 move inward toward the top. As a result, both fixed claws 2742 and 2743 form a dovetail groove between each other. The left and right end faces of the applicator base 2727 are inclined surfaces that fit into the dovetail groove.

The fixing claw 2742 on the left side is firmly fixed to the applicator stand 2741 and the slide rail 2739. When the replaced applicator base 2727 enters the working position 2741x, the base 2727 hits the left fixed claw 2742 and stops. The fixed claw 2743 on the right side is removable and attachable. Alternatively, a known lever mechanism or actuator can be used to freely fix, release, and retract. When moving the applicator APS in and out of the operating position 2741x, the fixed claw 2743 on the right side is unlocked and retracted.

As shown in FIG. 22, the slide rail 2823 in the standby position 2823y is provided as a wide table 2823. The table 2823 can slide in the front-rear direction on the rail 2821 drawn in the front-rear direction on the gantry 2831. Then, multiple applicators APS1 and 2 can be set on the table 2823.

A rail groove 2823b is formed on the upper surface of the side table 2823 so as to extend in the left-right direction. The rail groove 2823b of the table 2823 has the same width and depth as the rail groove 2739b of the slide rail 2739 on the applicator stand 2741 described above, and both grooves 2823b and 2739b are linearly connected to the same front-rear position. Is. Then, in that state, the applicator APS can slide along both grooves 2823b and 2739b.

In the state of FIG. 22, the applicator APS2 on the front side is in a position connected to the operating position 2741x. This applicator APS2 is either pulled out from the operating position 2741x or set in the operating position 2741x from now on. The rear applicator AP1 is either the one that slides the table 2823 to the rear side and escapes after pulling it out from the operating position 2741x, or the one that slides the table 2823 to the front side and then tries to set it in the operating position 2741x. Is.

Next, replacement of the end feed applicator APE will be described.
In the upper right part of FIG. 22, the end feed applicator APE at the standby position 2871y is shown. The applicator APE in standby position 2871y rests on a slide rail 2871 that extends in the anteroposterior direction. The upper surface of the slide rail 2771 is engraved with a rail groove 2871b so as to extend in the front-rear direction. The applicator APE is slidable (pushed and slid by hand) along this rail groove 2871b.

The rear end 2871t of the slide rail 2871 for the end feed extends to a position close to the side surface 2739t of the operating position 2741x at the right end of the slide rail 2739 for the side feed. At the same operating position 2741x, an end feed rail groove 2739c extending in the front-rear direction is formed orthogonal to the side feed rail groove 2739b. The end feed rail groove 2739c of both rails and the rail groove 2871b described above are formed so as to pass in a straight line. The heights of both slide rails 2871 and 2739 and the rail grooves 2871b and 2739c are the same.

Due to the structure of the slide rails 2871 and 2739, the end feed applicator APE can slide between the operating position 2741x at the center of the crimping machine body and the standby position 2871y away from the same part. Therefore, the applicator APE taken out of the operating position 2741x and slid to the standby position 2871y can be removed by a crane or the like at the same standby position 2871y. If the side feed applicator APS is to be used next, slide the end feed applicator APE from the operating position 2741x and then immediately set the side feed applicator APS to the operating position 2741x. Then, the terminal crimping work can be resumed.

Claims (5)

A terminal crimping machine (27'/ 37') that crimps a terminal (T) to the end of an electric wire (W) whose coating has been peeled off, and a terminal crimping machine that grips the electric wire and inserts the end of the electric wire into the terminal crimping machine. Wire clamp transport section (21'/ 31') and
It is a terminal crimping device (400) equipped with
The wire clamp transport section (21'/ 31')
A clamp (411) that grips the original side portion of the end portion of the electric wire, and
Clamp driving means (448) that drives the clamp and inserts the end of the electric wire into the crimping machine (27'/ 37'), and
It is equipped with an extension absorption mechanism (420) that retracts the clamp (411) in response to the extension of the electric wire when crimping the terminal.
The elongation absorption mechanism (420)
Stretching start crimping height detecting means for detecting that the crimping height at which the core wire of the electric wire starts to be stretched by terminal crimping is reached, and
A terminal crimping device (400) comprising a cylinder (423) that allows the clamp (411) to retract, which operates in synchronization with the means. The claim is characterized in that the cylinder (423) is a pneumatic cylinder, and a valve (463) for exhausting or depressurizing the inside of the pneumatic cylinder is provided in synchronization with the extension start crimping height detecting means. 1. The terminal crimping device according to 1. The terminal crimping device (300) according to claim 1, wherein the cylinder (423) is an electric cylinder with a servo function capable of torque control. The electric wire feeding unit (11) that feeds the electric wire (W1),
An electric wire cutting part (15) that cuts the supplied electric wire to an arbitrary length,
The wire coating stripping portion (23/33) that strips the coating at the end of the wire (W2 / W3),
A terminal crimping portion (27, 37) that crimps a terminal to the end of the wire whose coating has been peeled off,
A terminal crimping wire manufacturing device equipped with a clamp transport section (21, 31) that clamps a wire and transports it to each section.
A terminal crimping wire manufacturing apparatus, wherein the terminal crimping portion (27.37) and the clamp transporting portion (21.31) constitute the terminal crimping device according to any one of claims 1 to 3. A process of feeding an electric wire, a process of cutting the supplied electric wire to an arbitrary length, a coating stripping step of peeling off the coating at the end of the electric wire, and a terminal at the end of the electric wire from which the coating has been peeled off. A terminal crimping process for crimping, and a method for manufacturing end-treated electric wires.
A method for manufacturing an end-treated electric wire, which comprises using the terminal crimping device according to any one of claims 1 to 3 in the terminal crimping step.

Images