JPH06290848A - Terminal supplying mechanism - Google Patents

Abstract

PURPOSE:To downsize a device, and to operate the device efficiently by supplying terminals to a crimp part with a feeding claw, and separating the terminal from a carrier between a cutter, which can be oscillated freely, and an anvil. CONSTITUTION:A feeding claw 63, which 15 oscillated freely around of a supporting shaft 68 by a bell crank 62 engaged with a feed adjuster 61 to be elevated in the vertical direction in coupling with a crimper 42, is energized by a pulling spring 66. The claw 63 is inserted to a feed hole 65 of a carrier 64 for carrying a terminal 3, and supplies the terminal 3 one by one. At this stage, a cutter 76 is supported by a horizontal shaft 77 freely to be oscillated in relation to a machine frame 9, and pushed up to a position a little higher than an anvil 41 by a spring 78 with a guide shaft, and at the time of crimping operation, the cutter 76 is pushed down by a punch 82 fixed to the feed adjuster 61. The terminal 3 is separated from the carrier 64 between the cutter 76 and the anvil 41.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire terminal crimping device for cutting an electric wire to a desired length and crimping a terminal to an end thereof, and more particularly to means for interlocking supply and crimping of terminals.

[0002]

2. Description of the Related Art Conventionally, in order to cut an electric wire to a desired length and crimp terminals to both ends thereof, when a rotary indexing type device as shown in FIG. The electric wire of the set length is sent out, transferred through the wire pool section at the index section, and once changed in direction by the swivel arm / draw section. 1. Crimp the terminals sequentially supplied by the crimping machine to one end of the electric wire. Next, the swivel arm / draw section draws out the electric wire, cuts it by the cut strip section, and peels off the coating of the cut section. Then, at the other end of the electric wire transferred in the index section, NO.
2 Terminals that are sequentially supplied by a crimping machine are crimped and discharged as products.

In the conventional apparatus, the cutter for cutting the terminal from the carrier is independent of the guide groove of the carrier, and the guide groove is fixed, but the cutter slides on the holder and moves up and down. There is. Therefore, when the terminal is cut, the carrier is bent, which causes a problem. In addition, the cutter and holder must be machined precisely, and the structure is complicated, resulting in a high cost.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to improve the precision of the cut portion without deformation of the carrier.

[0005]

[Means for Solving the Problems] A terminal crimping device for an electric wire is
It is provided with a crimping mechanism for crimping by inserting the tip of an electric wire into the barrel of sequentially supplied terminals and a terminal supply mechanism for supplying one terminal to each crimping part.

The terminal supply mechanism is a characteristic part of the present invention, and is interlocked with the crimping mechanism to engage with the feed hole of the carrier connecting the terminals inserted along the terminal guide from its side, The feed claw that feeds the terminals one by one in conjunction with the crimper of the crimping mechanism, the brake that attaches the part that closes unnecessary holes of the carrier to the tip and constantly presses the carrier from above, and the operation of the feed claw And a cutter for cutting the connecting portion of the terminal.

[0007]

The cutter is formed integrally with the guide groove, and the guide groove swings with its end portion pivotally supported. Therefore, the structure is simplified and the cutter does not need to be processed precisely. Further, since the carrier operates in the same manner as the guide groove, it does not bend.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 are an overall front view and a side view of a terminal crimping device 1 for an electric wire of one unit. In FIG. 1, a state in which the terminal crimping device 1 for an electric wire of 4 units is assembled is shown by an imaginary line. Has been done.

The electric wire terminal crimping device 1 is a feeding mechanism 1 for grasping the tip of the electric wire 2 and guiding it to the second crimping portion 48.
0, a length-measuring mechanism 20 for gripping the distal end of the fed-out electric wire 2 and moving it to a desired length for positioning, and covering the electric wire 2 arranged between the feeding-out mechanism 10 and the length-measuring mechanism 20. A cutting mechanism 30 for peeling and cutting, a terminal supply mechanism 60 of the present invention which is arranged before and after a blade of the cutting mechanism 30 and sequentially supplies the terminals 3, and a wire of the electric wire 2 to the barrel of the supplied terminals 3. First crimping part 4 for inserting and crimping the tip part
It is provided with a crimping mechanism 80 including 0 and the second crimping portion 48, and a terminal supply mechanism 60 that feeds the terminals 3 one by one to the crimping portion. Each of these mechanisms 10, 20, 30, 6
0 and 80 are arranged in a straight line along the transfer path of the electric wire 2.

The delivery mechanism 10 of FIG. 3 has a cylinder 17 in which a tension portion 12 of the electric wire 2 is arranged at the base of a tubular wire-line nozzle 16 and a grip portion 13 is fixed to the tip of the tension portion 12 above the tension portion 12. The gripping portion 13 is moved forward when the electric wire 2 is sent out. The tension part 12 has a plurality of, for example, three rollers 12a supported by a stepped rotating shaft.

As shown in FIG. 4, the grip portion 13 is fitted over a U-shaped groove-shaped holder 13a and can be slightly moved back and forth by a cylinder 18 via a rod 13b, and a clamp claw 13c having an inclined upper surface. And holder 13a
When the cylinder rod of the cylinder 18 is retracted, the clamp claw 13c is moved to the left in the figure through the rod 13b, and the inclined surface becomes the pin 1d.
The electric wire 2 inside the holder 13a is pressed and fixed to the inner bottom surface by being pushed down by 3d.

The slide holder 11 for guiding the line nozzle 16 is supported by a horizontal support shaft 14 in a state in which it can be tilted by a slider 15, and is urged upward by a spring 15a having a rod for restricting rise. The slider 15 is movable back and forth with respect to the slide rail 19 on the machine frame 9, and is driven by the cylinder 8. In this way, the wire nozzle 16 tilts toward the terminal 3 supplied to the first crimp portion 40 when crimping the terminal 3 to the gripped electric wire 2.

As shown in FIGS. 1 and 2, in the length measuring mechanism 20, pulleys 22 are axially supported at both ends of a body 21 which is long in the horizontal direction, and an endless belt 23 tensioned by the pulleys 22 is attached to the endless belt 23, for example. An open / close claw type clamp 24 is fixed. By rotating the pulley 22 forward and backward by the motor 26, the clamp 24 fixed to the belt 23 can reciprocate left and right.
When an integral part of the contact with two limit switches 25 arranged at a desired position of the machine body 21, it stops at a predetermined position.

Further, as shown in FIG. 2, the clamp 24 is opened and closed by a cylinder 27 and holds the electric wire 2 at its tip. Further, the machine body 21 is positionally adjustable with respect to the machine frame 9 as the main body. Therefore, if the mounting position of the machine body 21 and the setting positions of the two limit switches 25 are determined, the clamp 24 can grasp the electric wire 2 and pull it out to a desired length.

The cutting mechanism 30 shown in FIGS.
A cylinder rod is fixedly attached to the blade, and three blades 36 and 37 arranged in a blade die 32 attached to a pair of left and right opposed cylinders 31 are configured to be engaged with each other at the same time. The core wire 2a and the coating 2b of the electric wire 2 are cut, and only the coating 2b is cut by the pair of outer blades 37. Further, a lever 34 made of an L-shaped spring material is attached to the blade die 32 with the blade 36 sandwiched therebetween, and after holding the peeled coating 2b, the lever 34 is dropped into a box 35 below.

The blade die 32 is composed of a frame 33 facing each other.
It slides along two parallel guide rods 38 that are bridged over and is moved by the cylinder 31 in the contact and separation directions. In this way, since the pair of blade dies 32 are arranged in parallel with the cylinder 31, the device becomes compact. A pair of blades 3
From the tip of the electric wire 2 cut only by the coating 2b with 6, 37,
In order to peel off the coating 2b, with the pair of blade molds 32 closed, the cylinder 8 retracts the wire nozzle 16 and the like as a whole.

Further, in order to remove the coating 2b from the rear end of the electric wire 2, a clamp portion 50 of FIG. 7 is arranged in front of a second crimping portion 48 described later, and the electric wire 2 is gripped at the tip. A holder 52 to which a pair of claws 51 are attached and a slider 55 are slidable on a base 54 fixed to the machine base 9 by a cylinder 53 so that the holder 52 and the slider 55 can move back and forth in the horizontal direction. The holder 52 is attached to the slider 55 by a horizontal support shaft 56, and is urged upward by a spring 58 with an ascending rod. The pair of claws 51 is driven to open and close by a cylinder 57.

8, 9 and 10 are explanatory views of the terminal supply mechanism 60 and the crimping mechanism 80 of the present invention. Crimping mechanism 80
Is composed of a first pressure-bonding portion 40 and a second pressure-bonding portion 48, and both have the same configuration. A bell crank 62 engaged with a feed adjuster 61 that moves up and down in a vertical direction in conjunction with the crimper 42 urges a feed claw 63 swinging around a fulcrum shaft 68 by a pulling spring 66, as shown in FIG. The terminals 3 are connected one by one by being inserted into the feed holes 65 of the carrier 64. The bell crank 6
The shaft 2 is supported by a shaft 69 with respect to a portion integrated with the machine frame 9.

As described above, the terminals 3 are connected by the carrier 64 at regular intervals and are housed in the terminal guide 71 attached to the side. Further, the carrier 64 is elastically pressed by the brake 67 from above, so that the carrier 64 does not move backward when the feed claw 63 returns.
Further, a guide 75 is attached to the tip of the brake 67 so as to cover the subsequent portion of the carrier 64. The brake 67 is supported by a cutter 76 by a horizontal fulcrum shaft 72 and is urged by a compression spring 73.

Here, the cutter 76 is swingably supported on the machine frame 9 by a horizontal shaft 77, and is pushed up to a position slightly higher than the anvil 41 by a spring 78 with a guide shaft. During crimping operation,
Punch 82 fixed to the feed adjuster 61
Is pushed down by. And carrier 6
4 is sent to the crimping position by the feed claw 63,
It enters the inside of the guide groove 79 formed on the side surface of the cutter 76. The upper opening portion of the guide groove 79 is the upper blade 81 and faces the anvil 41 which also serves as the lower blade.

Further, a center clamp guide 74 having a downward opening is attached to the feed adjuster 61, and as shown in FIG. 10, scissors which are constantly urged in a direction of opening by a spring (not shown) when lowered. A center clamp 70 of a type clamps the tip of the electric wire 2 and positions it at the crimping portion of the terminal 3. Here, the center clamp 70 and the center clamp guide 74 constitute positioning means.

The first crimping portion 40 of the crimping mechanism 80 shown in FIGS.
At the second crimping portion 48, the crimper 42 is attached to the feed adjuster 61 directly above the anvil 41 fixed to the machine frame 9. The feed adjuster 61 is slidably attached to four vertical guides 43 so as to be movable up and down, and is biased upward by a spring 44. Also, as seen in Figure 1, crimper 4
A roller 47 is rotatably supported at the upper end portion of 2, and is supplied from the above-mentioned terminal supply device 60 when pressed downward by a cam 45 which is disposed above it and horizontally reciprocates by a cylinder 46. The anvil 4 on the terminal 3
The terminal 3 is crimped onto the electric wire 2 by means of 1 and the crimper 42.

At this time, the tip of the electric wire 2 is connected to the terminal supply mechanism 6
It is clamped by the center clamp 70 of 0, and the feeding mechanism 1
The zero wire nozzle 16 is pressed by the crimper 42, tilts forward, and is positioned at the crimp portion of the terminal 3. First crimp section 40
The second crimping portion 48 and the second crimping portion 48 are arranged at symmetrical positions with the cutting mechanism 30 interposed therebetween, and the structural operation thereof is the same.

The operation of the apparatus of the present invention constructed as above will be described with reference to FIGS. In these figures, the mechanical parts described above are shown in a simplified manner, and the blades 36 and 37, the anvil 41, and the crimper 4 are shown in a state where the shapes and dimensions do not match, and for convenience.
The two directions are shown in different states.

First, at the origin, the cutting mechanism 3 as shown in FIG.
0, the 1st crimping | compression-bonding part 40, and the clamp part 50 are open, and the clamp 24 of the length-measuring mechanism 20 is waiting in the operating position of the limit switch 25 by the side of a backward limit. In addition, the cylinders 8 and 53 are extended, and the wire nozzle 16 and the holder 52 are extended.
Is moving forward. The terminal 3 has already been crimped to the tip of the electric wire 2 by the initial setup and is gripped by the gripping portion 13 of the feeding mechanism 10.

Next, as shown in FIG. 13, the cylinder 17 of the feeding mechanism 10 is contracted to move the wire-passage nozzle 16 forward, and the clamp 24 of the length measuring mechanism 20 moves forward to grip the electric wire 2. Then, the cylinder 18 of the grip portion 13 is operated to open the clamp claw 13c to open the electric wire 2, and then the clamp 24 of the length measuring mechanism 20 is retracted to the operating position of the rear limit switch 25 and the cylinder of the feed mechanism 10 is opened. 7 is extended, and the wire nozzle 16 is retracted. At this time, the electric wire 2 is in a tension state due to the resistance of the tension portion 12 of the feeding mechanism 10.

In this state, as shown in FIG. 14, when the clamp claw 13c of the feeding mechanism 10 and the claw 51 of the clamp portion 50 are closed and the cutting mechanism 30 is operated, the electric wire 2 is cut by the blade 36 and the cutting position. The coatings 2b on both sides are also cut by the blade 37. Next, when the cylinders 8 and 53 are reversely operated and the wire nozzle 16 and the holder 52 are retracted, the coating 2b is removed.

After the previous crimping operation, as shown in FIG. 15, one terminal 3 has been sent out to the predetermined positions of the first crimping portion 40 and the second crimping portion 48, and is fed to the core wire 2a at the end of the electric wire 2. Terminal 3
Becomes the corresponding state. Then, as shown in FIG. 16, the cylinder 46 of the crimping mechanism 80 is operated and the crimper 42 is lowered by the cam 45 to crimp the terminal 3 to the end portion of the electric wire 2.

At this time, as shown in FIG. 16, the crimper 42
When the wire nozzle 16 of the feeding mechanism 10 and the holder 52 of the clamp portion 50 are tilted in association with the above, and the tip of the electric wire 2 is brought close to the terminal 3 on the anvil 41, the terminal 3 serves as both the upper blade 81 and the lower blade. It is convenient because it is separated from the carrier 64 by the shearing force between it and the anvil 41, the crimping is ensured, and there is no displacement. Then, the cylinder 46 is reversely operated to raise the crimper 42 as shown in FIG. 17, and the work is completed. In this state, if the electric wire 2 with the terminals 3 crimped to both ends is grasped by hand or by a handlin device (not shown), and the claw 51 of the clamp part 50 and the clamp 24 of the length measuring mechanism 20 are opened and taken out, Figure 1
It becomes the initial state of 1.

[0030]

According to the present invention, since the structure of the terminal supply mechanism is simplified, it becomes compact and the terminal crimping device can be miniaturized. Since the crimping operation of the terminal to the electric wire and the feeding operation of the terminal after crimping are alternately performed in relation to the swing motion of the bell crank, the crimping process and the supplying process do not interfere with each other in time, and the crimping and supplying operation is performed. Since the operation is performed reliably, and the crimping operation and the supplying operation are mechanically interlocked with each other, electrical synchronization control is not required, and there is no synchronization deviation, and the required operation can be efficiently advanced.

In particular, the cutter is formed integrally with the guide groove, and the guide groove swings with its end portion pivotally supported. Therefore, the structure is simplified and the cutter does not need to be processed precisely.
Further, since the carrier operates in the same manner as the guide groove, it does not bend.

[Brief description of drawings]

FIG. 1 is a front view of an electric wire terminal crimping device.

FIG. 2 is a side view of an electric wire terminal crimping device.

FIG. 3 is an enlarged front view of a wire feeding mechanism.

FIG. 4 is an enlarged cross-sectional view of a grip portion of an electric wire feeding mechanism.

FIG. 5 is an enlarged side view of the cutting mechanism.

FIG. 6 is an enlarged plan view of a blade portion of the cutting mechanism.

FIG. 7 is an enlarged front view of a clamp part.

FIG. 8 is an enlarged side view of a crimping mechanism (first crimping portion / second crimping portion) and a main part of the terminal supply mechanism of the present invention.

FIG. 9 is an enlarged cross-sectional view of a main part of a cutting and crimping portion of a terminal.

FIG. 10 is an enlarged side view of the operation portion of the center clamp.

FIG. 11 is a plan view of terminals in a continuous state and electric wires to be connected to the terminals.

FIG. 12 is an operation explanatory view in the initial state of processing.

FIG. 13 is an operation explanatory diagram when pulling out an electric wire.

FIG. 14 is an operation explanatory view in a state where the electric wire is pulled out by a certain length.

FIG. 15 is an explanatory diagram of an operation in a state where the electric wire is cut.

FIG. 16 is an operation explanatory view when the terminal is crimped to the end of the electric wire.

FIG. 17 is an operation explanatory view in a state where terminals are crimped to both ends of an electric wire of a predetermined length.

FIG. 18 is a perspective view of a conventional terminal crimping device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric wire terminal crimping device 2 Electric wire 3 Terminal 10 Feeding mechanism 11 Slide holder 13 Gripping portion 16 Passing nozzle 20 Length measuring mechanism 24 Clamp 30 Cutting mechanism 36 blade 37 Blade 40 First crimping portion 41 Cutter and anvil 42 Crimper 45 Cam 48 2nd crimping part 50 Clamping part 51 Claw 54 Base 55 Slider 60 Terminal supply mechanism of this invention 62 Bell crank 63 Feeding claw 64 Carrier 65 Feed hole 67 Brake 74 Center clamp guide 75 Guide 76 Cutter 77 Shaft 78 Guide shaft spring 79 Guide groove 80 Crimping mechanism

Claims (1)

[Claims] 1. A crimping mechanism (80) for crimping by inserting a tip of an electric wire (2) into a terminal (3), and one terminal (3) at a crimping position in cooperation with the crimping mechanism (80). In the terminal crimping device (1) having the terminal supply mechanism (60) for supplying the crimping mechanism (80),
The bell crank (62) that swings in conjunction with 2) and the carrier (3) of the terminal (3) that is inserted from the side of the crimping mechanism (80) in conjunction with the swing motion of the bell crank (62). 64) is engaged with the feed hole (65), and the terminal (3)
The first crimping portion (40) and the second crimping portion (4
8) feeding claw (63) and carrier (64)
Is pressed from above to cover the following feed hole (65) and prevent the carrier (64) from retreating, and the connecting portion of the terminal (3) is interlocked with the operation of the brake (67) and the feed pawl (63). The upper blade (81) for cutting the blade in cooperation with the anvil (41) which also serves as the lower blade is attached to the carrier (6).
4) and a cutter (76) for guiding the cutter (76). The cutter (76) is urged upward by being axially supported near the insertion portion of the carrier (64) to form a punch (82) integral with the crimper (42). A terminal supply mechanism (60) characterized by being interlockable and swingable.