JPS6032315B2 - Continuous terminal crimping machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides for feeding a coated wire to a predetermined size, cutting the coated wire, stripping the cut end of the coat, and crimping a terminal to the rear end of the coated wire. , relates to an improvement of a continuous terminal crimping machine that performs continuous and automatic terminal crimping.

Conventionally, by opening and closing a group of cutting blades consisting of a set of two opposing core wire cutting blades and a set of two coated cutting stripping blades arranged in parallel and oppositely on both sides of the core wire cutting blades, wire rod feeding means is used as appropriate. The coated wire fed from the stock roll between the cutting blade groups is cut to a predetermined size, and coating cuts are made on both sides of the cut portion, and then wire clamping devices disposed above and downstream of the cutting blade groups are used. The cut coating is stripped off by the wire stripping action on the side opposite to the cutting blade group, and the coated wire is further removed by swinging the upstream and downstream wire clamping devices in a direction perpendicular to the wire feeding direction. There is a continuous terminal crimping machine in which the coating stripped end is moved above a crimping bed of a terminal crimping device disposed on the side of a group of cutting blades, and terminals are continuously crimped onto this part.

By the way, as shown in Figs. 1 and 2, the continuous terminal crimping machine described above has a wire rod feeding line L' extending immediately downstream of the cutting blade group 1 and forming a tapering shape from the intermediate part toward the upstream side. A fixed wire guide tube 2 with a through hole is provided to ensure reliable wire feeding along the wire feeding axis L. Further, the downstream wire clamping device 3 includes a fixed horizontal shaft 3a extending in the wire feeding direction on the side surface of the machine below the front surface of the terminal crimping calendar 4, and a fixed horizontal shaft 3a extending in the wire feeding direction.
A disk-shaped iron bag body 3b is iron-clad on the shaft so as to be movable in the rotational direction of the shaft, and the base end is fixed to the outer periphery of the bag body 3b and is perpendicular to the wire feeding direction. An extending arm 3c;
It consists of a pair of gripping claws 3d attached to the tip of the arm 3c so as to be able to open and close upward.

Therefore, the downstream wire clamping device 3 has the gripping claws 3
d, the covered wire W is cut on the downstream side of the fixed wire guide tube 2.
, the distance from the gripping position to the distal end of the rear end side sheathing stripping end inevitably becomes long due to the presence of the fixed wire guide tube 2.

Therefore, while the wire clamping device 3 is transferring the cut covered wire W to the front surface of the terminal crimping layer 4, the covered wire W is
Particularly in the case of a weak thin green, it hangs downward and may catch on the crimping bed 4a of the terminal crimping layer 4 or the terminal T placed on the bed 4a, resulting in a situation where the terminal T is blankly pressed.

In view of the above-mentioned circumstances, the present invention uses an elastic material that guides the moving wire from the side of the cutting blade group to the front surface immediately before terminal crimping along the wire movement locus between the downstream wire rod clamping device and the terminal crimping device. When the rear end of the cut and coated wire transferred by the downstream wire clamping device is placed above the front of the crimping bed, this part is allowed to float in the recess formed by the wire rod guide. When crimping terminals, the wire guide swings downward due to the force of pushing down the wire by the crimping die, avoiding sudden bending of the stripped end, ensuring good terminal crimping at all times, and further downstream. It is an object of the present invention to provide a continuous terminal crimping machine in which a wire discharge rod rotatable around a lower end base is provided near a side wire clamp device to facilitate discharge of the wire after terminal crimping. Hereinafter, the present invention will be explained in detail based on the embodiments shown in FIGS. 3 to 9.

Reference numeral 10 denotes a stock roll for coated wire W; 11 a moving table movable in the wire rod feeding direction on a joint 12; a set of two wire rod feeding rollers 13 linked to a side length mechanism (not shown); The upstream wire rod clamping device 14 is connected to the upstream wire rod clamping device 14.

Reference numeral 15 denotes a group of cutting blades that can be opened and closed and installed on the machine stand 12 downstream of the movable table 11, including a set of two core wire cutting blades 15a, 15a2 and the cutting blades facing each other with the line feed axis line as the boundary. It consists of a set of two coating cutting and stripping blades 150, 15Q, 15c, , 15c2, which are arranged parallel to each other on both sides of the blade.

16 and 17 are upstream and downstream wire rods fixed on the joint 12 along the wire feed axis between the movable table 11 and the cutting blade group 15 and immediately downstream of the cutting blade group 15, respectively. Among the guide tubes, the downstream wire rod guide tube 17 has a tidal shape extending from the intermediate portion toward the upstream side so as to reliably receive the tip of the covered wire W that is fed through the cutting blade group 15. It is formed in

Reference numeral 18 denotes a terminal crimping layer hemmed on the machine base 12 in a direction perpendicular to the wire feed direction of the cutting blade group 15, and a terminal supply reel 18a and a terminal T fed out from the reel 18a one by one. Crimp bed 18b that can be held and the crimping bed 18b
It consists of a crimping die 18c, etc., which is arranged appropriately above the crimping bed 18c and descends toward the crimping bed 18b at the appropriate time.

Reference numeral 19 denotes a downstream wire rod clamping device provided on the side of the machine stand 12 on the downstream side of the cutting blade group 15, the downstream wire rod guide tube 17, and the terminal crimping straight 18, and has the following configuration.

That is, the downstream wire clamping device 19 has a fixed horizontal shaft 19b fixed at both ends so as to extend in the wire feeding direction on the side surface of the machine base 12 via a bracket 19a directly below the front surface of the crimping bed 18b, and the fixed horizontal shaft 19b. A donut disk-shaped iron body 19c is iron-clad to be movable in the axial and rotational directions relative to the iron body 19b, and a base portion is fixed to the circumferential surface of the iron body 19c and extends upward in a direction perpendicular to the wire feeding direction. An extending arm 19d and an opening/closing drive section 19 at the tip of the arm 19d.
a pair of gripping claws 19f attached via e, a rotating mechanism 19g that can rotate the iron body 19c around a fixed horizontal axis 19b, and a rotating mechanism 19g that rotates the iron body 19c around a fixed horizontal axis 19b, and
It consists of a horizontal slider 19h for sliding the slider 9c. The horizontal rotating machine 19g consists of a short arm 199 protruding from the circumferential surface of the iron body 19c, and a push rod 19g2 connected to the tip of the short arm with a pole joint, and the base end of the push rod 19 By vertical movement of the push rod 19 stage by a cam drive mechanism (not shown) of this machine connected to the cam drive mechanism (not shown) of the machine, the gripping center axis h of the gripping claw 19f is moved from the position directly above the crimp bed 18b from the position where it coincides with the feeding axis line date. The iron body 19c, the arm 19d, and the gripping claw 19 reach the predetermined position.
It is arranged so that f can be rotated integrally.

Further, the sliding machine 19h has one side poisoned part connected to the iron body 1.
A roller 1 with both flanges is fixed to the side surface of 9c and iron-mounted to the fixed horizontal shaft 19b so as to be able to rotate integrally with the iron body.
9h, and a swinging lever 19h3 in which a small roller 19h2, which is supported by a ball at the tip, is rotatably engaged between the two wheels of the roller 19h, and the cam of the machine is connected to the base end of the lever 19h3. The lever 1 by a drive mechanism (not shown)
Due to the swing of 9h3, the troop body 19c and the arm 19
d, the gripping claw 19f, etc. are moved integrally in the wire feeding direction.

2. The cutting blade group 15, the downstream wire guide tube 17, the terminal crimping layer 18, and the downstream wire clamping device 19.
The wire guide is made of one spring steel wire (for example, a piano wire), and the lower end base is placed between the wire rod feed axis and the terminal crimping layer 18. The arm 19d and the gripping claw 19f are fixed to the terminal crimping table 18 by a bracket so as to be adjustable in position and extend upward in an arc shape to form a semicircular recess 20a at the upper front part of the crimping bed 18b. By allowing the tip of the coated wire W, which was moved when the wrapping was stopped, to be free in the recess 20a, the tip can be held on the central axis h.

Reference numerals 21a and 21b denote a pair of wire ejecting rods that are provided across the front and rear sides of the arm 19d at the moving position of the downstream wire rod clamping device 19, and are rotated with their base ends attached to the side of the base 12 via a bracket 22. It is fixed to a rotary shaft 23 that is freely supported, and the tip portions 21a' and 21b' are curved in a semicircular shape, and as shown in FIG. After the terminal is crimped, the gripping claw 19f opens and at the same time rotates toward the terminal crimping layer 18 side by a cam drive mechanism (not shown) inside the machine, and pulls the covered wire with the terminal crimped outward. Punch out the terminal crimping layer 18
The wire rods are conveyed into an appropriate wire storage container C which is separated from the side.

Next, the effect will be explained.

First, the moving table 11 is in the downstream position, and the upstream wire rod clamping device 14 and the cutting blade group 15 are in the open state.

Further, the downstream wire rod clamping device 19 opens the gripping claws 19f at a position where the central axis h coincides with the wire rod feeding axis L, and the wire strip discharge rods 21a and 21b are retracted below the wire rod guide 20. Furthermore, the terminal crimping layer 18 is formed using a crimping die 18c.
It is assumed that one terminal T is already placed on standby above the crimp bed 18b. When the operation is started in these conditions, the covered wire W is pulled out from the stock roll 10 by the rotational drive of the feeding roller 3, and the upstream wire rod clamping device 14, the upstream wire rod guide tube 16, the cutting blade group 15, and the downstream wire rod guide are The gripping claw 19f passes through the pipe 17.
When the feed roller 13 is fed by a predetermined amount (FIG. 3), the feeding roller 13 is temporarily stopped by the action of the lengthening mechanism.

Next, the upstream wire rod clamping device 14 is closed, and the gripping claws 19f of the downstream wire rod clamping device 19 are also closed.
The upper and downstream parts of the covered wire W are respectively gripped.

Subsequently, the cutting blade group 15 closes and the core wire cutting blades 15a, 1
5a2 cuts the coated wire W to a predetermined size, and cuts are made in the coating W on both sides of the cut portion using the coating cutting and stripping blades 150, 15Q, 15c, , 15c2.

Next, as the moving table 11 moves, the upstream wire clamping device 14 moves upstream, and the downstream wire clamping device 19 moves the iron mounting as the swinging lever 19h3 swings downstream. 19c, arm 19d, and gripping claw 19f
and the like integrally move to the downstream side, thereby peeling off the cut coatings W of the remaining and cut coating wires W, respectively.

As a result, the downstream end of the remaining covered wire W is at a position held by the upstream wire rod guide tube 16, and the upstream end of the cut covered wire W is at a position slightly downstream from the downstream wire rod guide tube 17. is escaping. Subsequently, the cutting blade group 15 opens and the movable table 11 returns to its original position, and the upstream wire rod clamping device 14 opens and stands by.

During this time, the entire downstream wire clamping device 19 rotates toward the terminal crimping layer 18 due to the rise of the saddle of the pushing rod 19 .

During this rotation, the covered portion W of the cut covered wire W protruding from the gripping claw 19f is guided by the wire length guide 20 to prevent it from hanging down midway. Then, at the same time that the gripping claw 19f reaches the front surface of the terminal crimping device 18 and stops rotating, the rear end portion of the covered wire W sinks into the recess 20a of the wire guide 20, and the rear end portion is It is placed exactly above the crimp bed 18b and the terminal T along the line h (solid line in FIGS. 4, 5, and 6). From this state, the terminal crimping device 18 lowers the crimping die 18c. At this time, the crimping die 18c presses down the tip covering W of the covered wire W and the covered core wire portion W2 into the terminal T, and at the same time crimps the terminal, but the covered wire W supported from below by the wire guide 20 , move downward against the elastic force of the wire guide 20. As a result, the terminal crimping can be performed with the coated wire W in a smoothly curved state (solid line in FIG. 7). When the crimping die 18c finishes the terminal crimping operation and rises, the covered wire W with the terminal attached is pushed up by the elastic force of the wire guide 20, and the terminal attachment part is separated upward from the crimping bed 18b and returns to almost its original straight position. restored to the extended state (
Figure 8).

Next, the gripping claw 19f performs an opening operation to release the covered wire W, and
At the same time as this release, the wire ejecting rods 21a and 21b rotate at high speed, and the tip portions 21a' and 21b' knock up the covered wire W slightly upward and outward, and knock it down into the wire storage receiver C ( Figure 9). After that, the downstream wire clamping device 19
The whole unit rotates back to its original position and returns to its original position on the upstream side.

This completes one cycle of feeding the side length of the covered wire W, cutting it to a predetermined size, stripping off the coating, and crimping the terminal to the stripped end, and the feeding roller 13 rotates again to cover the wire. The next cycle begins with feeding the wire W.

As detailed above, when using the terminal crimping machine of the present invention,
The covered wire can be moved along a wire village guide made of an elastic material for terminal crimping to the rear end of the cut covered wire, thereby preventing the wire from getting caught due to a drooping cut during movement, and also preventing the wire from getting caught in the wire during movement. The free iron is placed in the concave area of the guide to eliminate any misalignment between the wire village end and the terminal, allowing the entire covered wire to fall during crimping, making it possible to crimp the terminal in a good condition with the covered wire curved smoothly. Furthermore, after the terminal is crimped, the wire ejecting rod with a semicircularly curved tip rotates at the same time as the downstream wire clamping device opens, and the covered wire is knocked out slightly upward from the inside of the recess. This has many effects such as quick and easy wire discharge.

[Brief Description of the Drawings] Figures 1 and 2 are detailed views of the downstream wire clamping device and the terminal crimping layer in a conventional continuous terminal crimping machine, and Figures 3 to 9 are detailed views of the continuous terminal crimping machine of the present invention. Fig. 3 is an overall perspective view, Fig. 4 is an explanatory diagram of the state of main parts before terminal crimping, Fig. 5 is a view taken from arrow V to V in Fig. 4, and Fig. 6 is a perspective view of the main part before terminal crimping. A view from W to W in the figure, FIG. 7 is an explanatory diagram of the state of main parts when crimping the terminal,
FIG. 8 is an explanatory diagram of the state of the main parts after the terminal is crimped, and FIG. 9 is an explanatory diagram showing the state of discharge of the covered wire after the terminal is crimped. In the figure, 15 is a group of cutting blades, 18 is a terminal crimping device, 19 is a downstream wire clamping device, 2 wire rod guides, 21a, 2
1b is a wire discharge rod, W is a covered wire, and T is a terminal. Figure O, Figure O, Figure 2, Figure 6, Figure Power, Figure 7, Figure 8, Figure 9, Figure O, Figure 3, Figure O, Figure 4, Figure O, 5

Claims (1)

[Scope of Claims] 1. A cutting blade group and wire rod clamping devices disposed on the upstream and downstream sides cut the coated wire into a predetermined size and strip the coating on both sides of the cut portion, and further, the downstream wire rod clamping device The rear end of the cut coated wire is swung in a direction substantially perpendicular to the wire feeding direction, and the rear end of the cut coated wire is held out toward the terminal crimping device disposed on the side of the cutting blade group, and the terminal is crimped on the coated end. The downstream wire clamping device includes an arm that is entirely movable in the wire feeding direction and rotatable within a vertical plane perpendicular to the wire feeding direction, and a device provided at the tip of the arm. Separately, between the downstream wire clamping device and the terminal crimping device, the lower end base can be freely adjusted to the machine stand near the wire feeding axis on the side of the cutting blade group. A continuous terminal crimping machine, characterized in that it is provided with a wire guide made of an elastic material, which is fixed to the wire rod, extends in an arc shape along the trajectory of the wire movement, and has a semicircular recess formed in the upper front part of the terminal crimping bed. 2. The wire guide is made of one spring steel wire, and the tip of the coated wire that is moved when the arm stops rotating toward the terminal crimping device is loosely fitted into the recess to maintain the position. A continuous terminal crimping machine according to claim 1, which enables the continuous terminal crimping machine according to claim 1. 3. A wire discharge rod is provided below the terminal crimping device, and the wire discharge rod is rotatably supported in a vertical plane perpendicular to the wire feeding direction with its lower end base pivotally supported on the side surface of the machine base, and the wire discharge rod is connected to the 2. The continuous terminal crimping machine according to claim 1, wherein the terminal crimping machine rotates upward in synchronization with the opening operation of the gripping claws so as to knock out the covered wire outward. 4. The wire ejecting rod is composed of a pair of two wire rods fixed coaxially and separated from each other at the front and rear of the arm at the moving position of the downstream wire rod clamping device, and is formed with a tip curved downward in a semicircular shape. A continuous terminal crimping machine according to claim 3.