JPS6032316B2 - 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. A wire clamping device that cuts the coated wire fed from the stock roll between the cutting blade groups to a predetermined size and makes coating cuts on both sides of the cutting portion, and then arranges the wire clamping device above and downstream of the cutting blade group. The cut coating is stripped off by pulling the wire toward the side opposite to the cutting blade group, and further, the coating of the coated wire is 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 a stripped end portion 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 portion.

By the way, as shown in FIGS. 1 and 2, the continuous terminal crimping machine described above has a through hole extending along the wire rod feeding axis L directly downstream of the cutting blade group 1 and formed in a tapered shape from the intermediate portion toward the upstream side. A fixed wire guide tube 2 is provided to ensure reliable wire feeding along the wire feeding axis L. Further, the downstream wire rod clamping device 3 includes a fixed horizontal shaft 3a extending in the bran material feeding direction on the side surface of the machine below the front surface of the terminal crimping layer 4, and the fixed horizontal shaft 3a.
On the other hand, there is a disc-shaped bride body 3b fixed to the shaft so as to be movable in the ball direction and the rotational direction, and the base end is fixed to the outer periphery of the bride body 3b and extends perpendicularly to the wire feeding direction. It consists of an arm 3c and 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 clamp device 3 is transferring the cut covered wire W to the front surface of the terminal crimping device 4, the covered wire W is
Especially in the case of a weak thin wire, it may hang downward and get caught on the crimp bed 4a of the terminal crimping layer 4 or the terminal T placed on the crimp bed 4a, which may lead to a situation where the terminal T is crimped dry.

In view of the above-mentioned circumstances, the present invention guides the moving wire between the downstream wire clamping device and the terminal crimping device in a curve slightly upward from the wire movement trajectory from the side of the cutting blade group to the front surface immediately before the terminal crimping device. A wire rod guide is provided, and when the rear end portion of the cut and coated wire transferred by the downstream wire rod clamping device is placed in front of the loading bed, the rear end portion of the cut wire rod is allowed to fall under its own weight into the recess formed in the wire rod guide. It is positioned both in the left and right directions, and enables good terminal crimping while maintaining the wire rod in a straight state when crimping the terminal.Furthermore, a wire discharge rod is provided near the downstream wire rod clamping device that can freely rotate around the lower end base as a fulcrum. It is an object of the present invention to provide a continuous terminal crimping machine that facilitates the discharge of wire rods after terminal crimping. Hereinafter, the present invention will be explained in detail based on the embodiments shown in FIGS. 3 to 8.

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

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 bran feed axis as the boundary. It consists of a pair of coating cutting and stripping blades 150, 15Q, 15c, , 15c2 each arranged in parallel and facing each other on both sides of the blade.

16 and 17 are the movable table 11 and the cutting blade group 1, respectively.
5 and immediately downstream of the cutting blade group 15, the upstream and downstream wire rod guide tubes are fixedly installed on the machine stand 12 along the wire rod feeding line, and among these, the downstream wire rod guide tube 17 is In order to reliably receive the tip of the coated wire W that is fed through the cutting blade group 15, it is formed in a shape that gradually expands from the intermediate portion toward the upstream side.

Reference numeral 18 denotes a terminal crimping layer installed on the machine base 12 in a direction perpendicular to the line 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. A crimp bed 18b to be placed on, and the crimp 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 clamp device provided on the side of the machine stand 12 downstream of the cutting blade group 15, the downstream wire guide tube 17, and the terminal crimping layer 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 to 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. 19b, a donut disk-shaped iron body 19c is iron-clad so as to be movable in the ball direction and the rotational 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 machine 19g that rotates the carbon casing 19c around a fixed horizontal axis 19b, and a rotating machine 19g that rotates the carbon casing 19c around a fixed horizontal axis 19b;
It consists of a horizontal slider 19h for sliding the slider 9c. The horizontal rotating device 19g consists of a short arm 19& that protrudes from the circumferential surface of the unit body 19c, and a push rod 19g2 pivotally connected to the tip of the short arm with a ball 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 gripping center axis h of the gripping claw 19f is moved onto the crimp bed 18b from the position where it coincides with the feed axis date. Sent to war Terminal T
In the range reaching the top surface, the iron body 19c, the arm 19d,
The gripping claws 19f are designed to rotate integrally.

Further, the sliding machine 19h has one side of the metal body 1.
Both flanged openings 1 are mounted on the fixed horizontal shaft 19b so as to be fixed to the side surface of the bag 9c and rotate integrally with the iron diamond body.
9h, and a swinging lever 19h3 in which a small roller 9h2 supported at the tip is rotatably engaged between the metal levers of the roller 9h, and the cam of this 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 twill material feeding direction.

Reference numerals 20 denote the cutting blade group 15, the downstream wire rod guide tube 17, the terminal crimping layer 18, and the downstream wire rod clamping device 19.
The wire guide is made of a single piece of round wood, and the position of the lower end base can be adjusted with a bracket as appropriate from the wire feed axis line to the upper surface of the machine base 12, which is closer to the terminal crimping layer 18 side. , and extends upward in an arc shape to form a U-shaped recess 20a at the front surface of the compression bed 18b;
The arm 19d and the gripping claw 19f are connected to the terminal crimping device 1.
8, when the tip of the coated wire W is turned and stopped, the tip of the sheathed wire W is guided on a curve slightly upward from the movement locus of the wire gripping central axis h, and is caused to fall into the recess 20a by its own weight. , the tip of the wire ridge can be held in a substantially straight shape on the bottom of the recess 20a and on the terminal T placed on the crimp bed 18b.

Reference numerals 21a and 21b are a pair of wire discharge rods 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 rotatable with the proximal end attached to the side surface of the joint 12 via a placket 22. The tip portions 21a' and 21b' are curved in a semicircular shape, and are normally held in a diagonal direction perpendicular to the feeding wire as shown in FIG. After the terminal is crimped, the gripping claw 19f opens and simultaneously rotates toward the terminal crimping layer 18 by a cam drive mechanism (not shown) inside the machine, striking the coated wire with the terminal crimped outward. Take out the terminal crimp 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 clamp device 19 opens the gripping claws 19f at a position where the center axis h coincides with the wire feed axis date, and the wire discharge rods 21a and 21b are retracted below the wire 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 the crimp bed 18b and is 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 13, 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 side length 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
The coated wire W is cut to a predetermined size by the cutter 5a2, and cuts are made in the coated wire W on both sides of the cut portion by the coater cutting and stripping blades 15q, 15Q, 15C, 15c2.

Next, as the moving table 11 moves, the upstream wire rod clamping device 14 moves upstream, and the downstream wire rod clamping device 19 moves the iron brace 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 each of the cut coatings W of the remaining and cut covering 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 is rolled toward the terminal crimping layer 16 due to the upward movement of the push 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, when the gripping claw 19f reaches the front surface of the terminal crimping layer 18 and stops rotating, the rear end of the covered wire W falls into the recess 20a of the wire guide 20, and the rear end is placed on the crimping bed. Calendared terminal T
It is placed accurately in a straight line on the top (solid lines in Figures 4, 5, and 6). From this state, the terminal crimping layer 18 lowers the crimping die 18c to perform terminal crimping (FIG. 7).

When the crimping die 18c finishes the terminal crimping operation and rises, the gripping claw 19f opens and releases the coated wire W. At the same time as this release, the wire discharge rods 21a and 21b rotate at high speed, and the tip 21a' , 21b', the coated wire W is thrown upwardly and outwardly, and the coated wire is dropped and stored in the wire storage receiver C (FIG. 8). Thereafter, the downstream wire clamping device 19 as a whole rotates back to its original position and slides back to its original position on the upstream side. This completes one cycle of feeding the coated wire W along its side length, cutting it to a predetermined size, stripping the end coating, and crimping the terminal to the stripped end, and the feeding roller 13 rotates again. The next cycle begins with feeding the covered wire W. As described in detail above, when using the terminal crimping machine of the present invention, the covered wire can be moved along the wire guide for terminal crimping to the rear end of the cut covered wire, and the wire is pulled by the flower drop during the movement. This prevents the end of the covered wire from falling into the recess of the wire village guide, and holds the tip of the wire in a straight line between the bottom of the recess and the top surface of the terminal, eliminating any misalignment between the end of the wire and the terminal. Terminals can be crimped in good condition, and at the same time as the downstream wire clamping device opens, a wire discharge rod with a semicircularly curved tip rotates to remove the covered wire from the recess. Since the wire is ejected upward, it has many effects such as quick and easy discharge of the covered wire.

[Brief explanation of drawings]

1 and 2 are detailed views of the downstream wire clamp device and the terminal crimping calendar part of a conventional continuous terminal crimping machine, and FIGS. 3 to 8 show an embodiment 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 of V to V lost in Fig. 4, and Fig. 6 is a view of arrows W ~ in Fig. 4. Figure 7 is an explanatory diagram of the state of the main parts when crimping the terminal,
FIG. 8 is an explanatory diagram of the state of main parts after terminal crimping. In the figure, 15 is a cutting blade group, 18 is a terminal crimping layer, 19 is a downstream wire clamping device, 20 is a wire guide, 21a, 2
1b is a wire discharge rod, W is a covered wire, and T is a terminal. Figure 5 Figure 6 Figure l Figure 2 Figure 3 Atsushi Figure 7 Moat 4 Figure Hair 8

Claims (1)

[Scope of Claims] 1 Cutting the coated wire to a predetermined size using a group of cutting blades and wire clamping devices disposed on the upstream and downstream sides, stripping off the coating on both sides of the cut portion, and further cutting the coated wire to a predetermined size, and stripping off the coating on both sides of the cutting portion, and further cutting the coated wire to a predetermined size using the cutting blade group and the wire clamping devices disposed on the upstream and downstream sides. swings in a direction substantially perpendicular to the wire feeding direction, and holds out the rear end of the cut coated wire toward the terminal crimping device disposed on the side of the cutting blade group, and crimps the terminal on the stripped end of the cut wire. 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 distal end of the arm. Separately, between the downstream wire clamping device and the terminal crimping device, the lower end base is adjusted to the machine stand near the wire feeding axis on the side of the cutting blade group. A wire rod guide is provided which is freely fixed, extends in an arc shape with a slightly upward curve from the wire movement trajectory, and has a U-shaped recess in the front part of the terminal crimping bed, and when the arm stops rotating toward the terminal crimping device. A continuous terminal crimping machine characterized in that the tip of the moved covered wire is allowed to fall into the recess so that it can be placed on the terminal placed on the crimping bed. 2. A wire discharge rod is provided below the terminal crimping device, and the wire discharge rod is rotatably supported on the side surface of the base so as to be rotatable in a vertical plane perpendicular to the wire feeding direction. 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. 3. The wire discharge rod is composed of a pair of two wire rods fixed coaxially apart from each other at the front and rear of the arm at the moving position of the downstream wire rod clamping device, and has a tip curved downward in a semicircular shape. A continuous terminal crimping machine according to claim 2.