JP2977478B2 - Crimping device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crimping apparatus for crimping a crimp terminal on the tip end of a core wire of a covered electric wire.

[0002]

2. Description of the Related Art Conventionally, a so-called lug terminal (bare crimp terminal for copper wire) has been crimped to the leading end side of a core wire of a covered electric wire using a crimping device. Some of the electric wires crimping the terminals by this crimping device have a core wire diameter of, for example, 1 cm or more. Such a thick electric wire is used, for example, as a power cable of a power supply device or as a power supply line of a large motor. The crimp terminal is generally formed by processing a thick copper plate or the like.

[0003] The conventional crimping device has a structure in which a core holding portion of a crimping terminal is sandwiched between a lower die and an upper die and deformed. The lower mold has a mounting seat and a core wire holding portion, and has a structure for supporting a crimp terminal in which the core wire of the electric wire is inserted into the core wire holding portion. The upper die has a structure in which the core wire holding portion is deformed by sandwiching the core wire holding portion between the lower die and the core wire and the core wire holding portion are crimped. The crimping device includes a positioning-type driving mechanism for displacing at least one of the lower die and the upper die in order to move the lower die and the upper die closer to or away from each other.

[0004]

In the conventional crimping device, when the core wire holding portion is sandwiched between the upper die and the lower die, there is a problem that a displacement of the terminal crimping position occurs as shown in FIG. Was. In FIG. 6, T is a crimp terminal, T1 is a cylindrical core wire holding portion into which the core wire of the coated electric wire is inserted, and T2 is a disk-shaped mounting seat having a circular hole in the center. T3 indicates a terminal crimping position which is deformed by pressing a part of the core wire holding portion T1. As shown in FIG. 6 (A), it is preferable that the terminal crimping position T3 is substantially a fixed position at the center when viewed from above the core wire holding portion T1. However, if the user is not skilled in the work, the core wire holding portion T1 may be displaced in the vertical direction during the crimping work as shown in FIG.
6 (D), or in both the vertical and horizontal directions as shown in FIG. 6 (D).

[0005] This is because in the conventional crimping device, the core wire holding portion T
This is because only the lower side of 1 was supported by the support member and pressed from above by the upper die. When using a lower mold having only such a support member, the operator rotates the electric wire having the crimp terminal fitted to the distal end side in the circumferential direction before crimping, or moves the crimp terminal to the support portion by moving back and forth in the axial direction. Position. Since this positioning is not always performed accurately, the displacement of the crimping position as shown in FIG. 6 occurs.

In order to prevent the displacement, the lowering of the upper mold is temporarily stopped at the start of the crimping, the positioning is performed in the state of the temporary crimping, and then the lowering of the upper mold is performed again to complete the crimping. Such an operation is a skilled operation based on visual observation and perception of an operator. In addition, the fixing of the positioning is a manual operation, and is a very dangerous operation because the pressure of the crimping force is strong.

As a step after the terminal crimping, a vinyl insulating coating tube CT is attached to the crimping part as shown in FIG. Have been done. However, since there is only a small difference between the outer diameter of the electric wire and the inner diameter of the tube, when the tube is placed on the core holding portion of the terminal, the tube does not slip easily, and this work requires labor, labor and skill. is there.

As described above, the crimping of the terminal to the front end side of the electric wire by the conventional crimping apparatus has a problem that the crimping position is apt to be poor due to a displacement of the crimping position, the labor is great, and the safety is lacking.

In addition, the work of covering the core wire holding portion of the crimp terminal with the insulating coating tube requires labor, time and skill.

An object of the present invention is to provide a crimping device which can easily and correctly determine the crimping position of a crimping terminal and can crimp accurately, quickly and safely.

Another object of the present invention is to provide a crimping device which can absorb the extension of the terminal which occurs when the crimping terminal is crimped and can prevent the mounting seat from being deformed.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has a mounting seat T2 and a core wire holding portion T1,
The core wire holding portion T1 is deformed by sandwiching the core wire holding portion T1 between the lower dies 2, 3 supporting the crimp terminal T in which the core wire C of the electric wire L is inserted into the core wire holding portion T1. Upper die 1 for crimping a core wire and a core wire holding portion, and lower die (2, 3)
A crimping apparatus including a mold driving mechanism for displacing at least one of the lower mold and the upper mold in order to move the upper mold 1 closer to and away from the upper mold 1.

The crimping apparatus according to the present invention comprises: a first support portion 2 in which the lower die positions and supports the core wire holding portion T1 of the crimp terminal T;
And a second support portion 3 for supporting the mounting seat T2 of the terminal T. The second support portion 3 is provided with engagement structures (4 to 6) for engaging with the mounting seat T2 and positioning the mounting seat. This engagement structure includes an engagement member 4 that engages with the mounting seat T2.
And an engagement member posture change permitting mechanism (5, 6) for permitting a change in the posture of the engagement member. This engaging member posture change permitting mechanism has a mounting seat T before the crimp terminal is crimped.
The engaging member 4 is held at a fixed position to engage with the engaging member 4, and the posture of the engaging member 4 is maintained such that the attachment seat T2 and the engaging member 4 are maintained in engagement during crimping and the attachment seat is allowed to extend. Is changed.

The engaging structure for positioning the mounting seat T2 is designed to engage with the front end of the mounting seat, and the end of the second supporting portion 3 of the lower die which is located on the side opposite to the first supporting portion 2. It is preferable to provide an engaging member 4 on the side of the section, and to engage the distal end of the mounting seat T2 with the engaging member 4. This facilitates the operation of supporting the mounting seat T2 on the second support portion 3 of the lower mold, and also allows the positioning of the mounting seat T2 by one engagement member 4.

The engagement member posture change permitting mechanism (5, 6)
A guide mechanism (4a, 5) for guiding the engaging member 4 in a direction of contacting or separating from the second support portion 3, and a holding force for holding the engaging member 4 guided by the guide mechanism at a fixed position. And a holding force generating mechanism (5, 6). This holding force is set to be smaller than the force applied to the engaging member 4 due to the extension of the mounting seat T2 at the time of crimping. In this way, a mechanism for changing the posture of the engagement member 4 to absorb the extension of the crimp terminal can be simply configured. In particular, since the guide mechanism (4a, 5) is provided, the engagement member can be reliably returned to the home position.

Specifically, the guide mechanism (4a, 5)
A rod member 5 fixed to the second support portion 3 and extending in the direction in which the first support portion 2 and the second support portion 3 are arranged; and a through hole formed in the engaging member 4 and through which the rod member 5 loosely penetrates Hole 4a
And Further, the holding force generating mechanism is arranged between the stopper member 5a fixed to the non-fixed end of the rod member 5 and the stopper member and the engaging member 4, and contracts when an external force is applied. And a restoring force generating member (spring member or elastic member) 6 for restoring. Then, the above-described holding force is obtained by the restoring force generated by the restoring force generating member 6. If the extension of the crimp terminal is absorbed by swinging or displacing the engagement member 4 about the rod member 5 as described above, the structure can be achieved without using a complicated movable portion.

The guide mechanism (4a, 5) includes a cylindrical rod member 5 fixed to the second support portion 3 and extending in a direction in which the first support portion and the second support portion are arranged. 4 and a through hole 4a through which the rod member penetrates, the diameter of which is larger than the outer diameter of the rod member.

The holding force generating mechanism includes a stopper member (5a, 13) fixed to the non-fixed end of the rod member and a rod member 5 disposed between the stopper member and the engaging member. And a coil spring 6 that passes therethrough so that the holding force is obtained by the spring force of the coil spring. With this configuration, the coil spring can be prevented from falling off by the rod member.

The engaging member 4 has an engaging portion 4B that engages with the edge of the mounting seat T2 and a contact member 4A that contacts the end surface of the second support. The contact hole 4A has a through hole 4
a is formed. The engaging portion 4B is attached to the mounting seat T2.
Between the first surface portion 4B1 with which the edge portion of the mounting member abuts and the mounting seat T2 supported by the second support portion 3 along the mounting seat with a gap large enough to allow the insertion of the mounting seat. And a second surface portion 4B2 which extends to prevent the edge of the mounting seat from lifting during crimping. The second surface portion 4B2 is formed continuously with the second surface portion, and is inclined in a direction away from the second support portion to form the gap. It is preferable to have a tapered surface portion 4B3 for facilitating insertion of the mounting seat into the inside. With such a configuration, the engagement with the mounting seat can be reliably achieved, and the engagement does not come off during crimping. In addition, since the tapered surface portion is provided, the mounting seat can be easily inserted.

Furthermore, an electric wire support (also used as a coated tube mounting device in the embodiment) 7 is arranged in front of the lower die, and the coated portion of the coated electric wire L is supported by the electric wire support, so that the crimping is performed during crimping. There is no need for the worker to support the electric wires, and workability is improved.

The wire support (cover tube mounting tool) 7
An electric wire supporting rotating body 8 and a supporting structure 9 for rotatably supporting the rotating body are provided. The rotating body 8 has a plurality of wire fitting recesses 8a having different shapes and sizes corresponding to electric wires having different thicknesses. ~
8j may be formed with a gap in the rotation direction. When formed in this manner, a common wire support can be used for wires having different thicknesses.

The shape of the wire fitting recesses 8a to 8j is such that the insulating coating tube CT, which is previously mounted on the cover IC of the coated wire and is moved to a position covering the core holding portion of the crimp terminal after the completion of crimping, is used. It is good to set it so that it cannot pass through.

With this arrangement, when the terminal fitting is removed from the lower mold after the crimping of the crimp terminal and the electric wire is pulled, the end of the covering tube is hooked around the concave portion of the rotating body 8. When the wire is further pulled, only the wire is pulled, and the covering tube can be moved relatively to the wire to cover the crimp portion of the crimp terminal. Conventionally, this work was performed manually and required a considerable amount of force. However, if this wire holder (covered tube mounting device) is used, the tube can be mounted easily and easily.

In the crimping apparatus of the present invention, the lower mold (2,
3) The core holding portion T of the crimp terminal in the first support portion 2
1 is positioned and supported, and the mounting seat can be positioned by engaging the mounting seat T2 with the engaging member 4, so that the contact position between the core wire holding portion T1 of the crimp terminal and the upper die 1 is the horizontal position shown in FIG. The crimp terminal is crimped at the correct crimp position without displacement in the (X) direction, the vertical (Y) direction, and both directions.

The metal material of the core wire holding portion T1 is extruded by the pressure at the time of crimping, and the crimp terminal slightly extends in the length direction. In the present invention, since the posture is changed so that the engaging member 4 absorbs this extension, the mounting seat T2 can be prevented from being deformed. If the engaging member does not move, an excessive force is applied to the mounting seat T2, and the mounting seat is deformed.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, T has a mounting seat T2 and a core wire holding portion T1.
Is a crimp terminal into which the core wire C is inserted. Reference numeral 1 denotes an upper mold which presses the core wire C and the core wire holding portion T1 by deforming the core wire holding portion by sandwiching the core wire holding portion T1 between the lower dies (2, 3). Reference numerals 2 and 3 denote a first support portion and a second support portion which are integrally formed and constitute a lower die for supporting the crimp terminal. The first support portion 2 has a semicircular or U-shaped groove 2a for positioning and supporting the core wire holding portion T1 of the crimp terminal T on the upper surface. The groove 2a is open at the upper end and both ends. The second support portion 3 is provided with a mounting seat T for the crimp terminal T.
2 and a screw hole 3b.
It has. In this example, the first support portion 2 and the second support portion 3 are formed separately, and the two are combined to form a lower mold. However, the first support portion and the second support portion are integrated. It goes without saying that the lower mold may be formed as an integral structure.

Reference numerals 4 to 6 denote second support portions 3 of the lower molds (2, 3).
, Which is engaged with the distal end of the mounting seat T2 of the crimp terminal T to form an engaging structure for positioning the mounting seat T2. The engaging structure (4-6) includes an engaging member 4 that engages with the distal end portion of the mounting seat T2, and an engaging member posture change permitting mechanism (5, 6) that permits the posture of the engaging member 4 to change. ).

The engaging member 4 is provided on an end of the lower second support 3 opposite to the first support 2. The engaging member 4 has an engaging portion 4B that engages with the edge of the mounting seat T2, and a contact portion 4A that contacts the end surface of the second support portion 3. Is formed with a through hole 4a. The engaging portion 4B allows the mounting seat T2 to be inserted between the first surface portion 4B1 at which the edge of the mounting seat T2 abuts and the mounting seat T2 supported by the second support portion 3. A second surface portion 4B extending along the mounting seat with a certain gap to prevent floating of the edge of the mounting seat during crimping
2 and the second surface portion 4B2.
And a tapered surface portion 4B3 which is inclined in a direction away from the support portion 3 to facilitate insertion of the mounting seat into the gap.

The engagement member posture change permitting mechanism (5, 6)
Before the crimping terminal T is crimped, the mounting member T2 is allowed to be mounted on the second support portion 3 and the engaging member 4 is supported at a fixed position to be engaged with the mounting seat T2. Seat T
The configuration is such that the engagement between the engaging member 4 and the engaging member 4 is maintained, and the posture of the engaging member 4 is changed so as to allow the mounting seat to extend.

The engagement member posture change permitting mechanisms (5, 6)
A rod member 5 having a distal end screwed to the second support portion 3 and made of a bolt or the like, and a restoring force generating member made of a coil spring sandwiched between the engaging member 4, the head 5 a of the rod member 5 and the washer 13. 6 is provided. The engagement member posture change permitting mechanism (5, 6) includes a guide mechanism (4) for guiding the engaging member 4 in a direction of contacting or separating from the second support portion 3.
a, 5) and a holding force generating mechanism (5a, 6, 13) for generating a holding force for holding the engaging member 4 guided by the guide mechanism at a fixed position.

The guide mechanism (4a, 5) includes a cylindrical rod member 5 fixed to the second support portion 3 and extending in the direction in which the first support portion 2 and the second support portion 3 are arranged. A through hole 4a formed in the engaging member 4 and having a diameter larger than the outer dimension of the rod member 5 and through which the rod member penetrates loosely is formed. The holding force generating mechanism is disposed between the stopper member (5a, 13) and the engaging member 4 and includes a stopper member including a head 5a and a washer 13 fixed to the non-fixed end of the rod member 5. And a restoring force generating member 6 which contracts when an external force is applied and restores when no external force is applied. In this embodiment, the restoring force generating member 6 is connected to the rod member 5.
It is composed of a coil spring fitted to the. The above-mentioned holding force is obtained by the restoring force generated by the restoring force generating member 6. This holding force (the spring force of the restoring force generating member 6) is set smaller than the force applied to the engaging member 4 due to the extension of the mounting seat T2 of the crimp terminal T during crimping. In this case, the engaging member 4 is brought into contact with the guide mechanism (4
a, 5), the guide seat is displaced while being guided, so that the extension of the mounting seat T2 can be absorbed.

Although not shown in FIG. 1, the lower mold (2,
In this example, a positioning-type driving mechanism for displacing the position of the upper die 1 with respect to the lower die (2, 3) in order to move the upper die 1 closer to or away from the upper die 3 is used.

Next, the operation of this embodiment will be described. FIG. 1A shows a state before crimping of the crimping terminal in the crimping apparatus of the present embodiment, and FIG. 1B shows a state when crimping is completed. As shown in FIG. 1A, the core wire holding portion T1 of the crimp terminal T into which the core wire C of the electric wire L is inserted is formed in a groove 2a formed on the upper surface of the first support portion 2 constituting a part of the lower die. And support it. At this time, the end edge of the mounting seat T2 is formed between the second surface portion 4B2 of the engaging portion 4B of the engaging member 4 and the second support portion 3 while using the tapered surface portion 4B3 as a guide. Insert into the gap. The edge of the tip of the mounting seat T2 abuts on a first surface 4B1 extending in a direction orthogonal to the second surface 4B2.

As described above, the crimp terminal T is connected to the first
When supported by the second support portions 2 and 3, the core wire holding portion T1 can be positioned at a fixed position on the upper surface of the first support portion 2, and the mounting seat T2 and the engagement portion of the second support portion 3 can be positioned. The mounting seat T2 can be positioned by engagement with the mounting seat 4B. The engagement between the tip of the mounting seat T2 of the crimp terminal T and the engaging member 4B prevents the crimp terminal T from rotating, and also positions the crimp terminal T in the longitudinal direction (the direction in which the electric wire L extends). Is made. Accordingly, when the crimping terminal T is crimped, the contact position between the core wire holding portion T1 and the upper mold 1 is adjusted as shown in FIG.
As shown in (1), no displacement occurs in the vertical direction, the horizontal direction, or both directions.

Note that the metal of the core wire holding portion T1 is extruded by the pressure at the time of crimping, and the crimping terminal T extends. However, in the present embodiment, as shown in FIG. 1 (B), the posture is changed so that the engaging member 4 absorbs this extension.
2 can be prevented from being deformed. When the engaging member 4 does not move, an excessive force is applied to the mounting seat, and the mounting seat is deformed. Since the engagement position between the mounting seat T2 and the engaging member 4 is set at the distal end of the mounting seat, the operation of supporting the mounting seat T2 on the second support portion becomes easy, and the mounting seat T2 is formed by one engaging member. Is positioned.

In this embodiment, since the guide mechanism (4a, 5) and the holding force generating mechanism (5a, 6) as described above are provided, after the completion of crimping, the crimp terminal fixed to the electric wire is removed from the crimping device. By detaching, the engagement member 4 is surely returned to the home position.

[0037]

FIG. 2 shows the lower mold, which is a main part of the present pressure bonding apparatus.
FIG. 7 is a perspective view of an embodiment of an engagement member and a lower mold member actually used having an engagement member posture changing mechanism. This lower mold member is mounted on the device in the manner shown in FIG. In the embodiment of FIG. 2, the same parts as those of the embodiment of FIG. 1 are denoted by the same reference numerals as those of FIG. The first support portion 2 of the lower mold has a semi-cylindrical outer shape for ease of manufacture, and reference numeral 2a denotes a groove portion provided so that the bottom surface side thereof forms a semi-arc in the length direction of the support portion 2. . The core wire holding portion T1 of the crimp terminal is fitted and supported in the groove 2a. Reference numeral 2b denotes a positioning engaging portion formed of a semi-annular groove used for setting the lower mold at a fixed position of the crimping device.

Next, an example of the overall structure of an embodiment of the crimping apparatus according to the present invention will be described with reference to FIG. A in the figure is a crimping device, and a lower member as shown in FIG. 2 mainly including lower first and second support portions 2 and 3 is held on a base of the crimping device main body. I have. In FIG. 3, reference numeral 11 denotes a hydraulic cylinder constituting a mold driving mechanism, and reference numeral 12 denotes a hydraulic pressure supply pipe for driving the movable portion 11a of the hydraulic cylinder 11 up and down. The upper die 1 is the movable part 1 of the hydraulic cylinder 11
It is detachably fixed to the tip of 1a.

In this embodiment, the crimp terminal is supported by the lower mold in the same manner as described in the example of FIG.
By applying hydraulic pressure, the movable portion 11a (upper die 1) descends and the core holding portion T of the crimp terminal supported by the lower die member.
Press 1 to crimp the crimp terminal to the core wire. Thereafter, the hydraulic pressure is released, so that the movable portion 11 of the cylinder 11 is released.
a rises and the upper mold 1 rises.

In FIG. 3, reference numeral 7 denotes an electric wire support which is used in addition to the crimping device of the present invention.
Is also used as a covering tube mounting tool. The wire support 7 supports the covered portion IC of the covered wire L, and is fixed at a predetermined interval in front of the lower die on a table to which the crimping device is attached. The electric wire support 7 includes an electric wire supporting rotating body 8, which is rotatably supported by a supporting structure 9. A stop 10 is screwed into the support structure 9 and fits into a fitting hole provided in the rotating body 8 for supporting the electric wire so as to stop the rotation of the rotating body 8 for supporting the electric wire at a fixed position. It is a screw.

A plurality of wire fitting recesses 8a to 8j having different shapes and dimensions corresponding to wires having different sizes are provided on the outer peripheral portion of the rotating body 8 for supporting wires as shown in FIG. Are formed. The plurality of wire fitting recesses 8a to 8j are U-shaped recesses that open radially outward, and the bottom of each recess has a semicircular shape having a radius close to the outer diameter of the corresponding wire. Have. The shape and dimensions of these recesses 8a to 8j are determined so that the insulating covering tube CT movably mounted on the covering portion IC of the covered electric wire L cannot pass through.
In addition, fitting holes 8p into which the tips of the screws 10 of FIG. 3 are fitted are formed corresponding to the concave portions 8a to 8j.

Using the wire support 7 as in this embodiment eliminates the need for an operator to support the wire during crimping. In addition, a common wire support can be used for wires having different thicknesses. When the electric wire is supported by the electric wire support 7, after crimping, the terminal fitting is removed from the lower mold and the electric wire is pulled toward the end, as shown in FIGS. Is hooked around the concave portion 8a of the rotating body 8 for electric wire fitting. Further, when the electric wire is pulled forward, only the electric wire is pulled, and the tube CT can be moved relatively to the electric wire to cover the crimp portion of the crimp terminal. As described above, the wire support 7 also functions as a covering tube mounting tool.

The following is a description of the components required for the covering tube mounting tool.

[1] A sheathing tube mounting tool for covering a crimping portion between a core wire C of a sheathed wire L and a crimping terminal T with a sheathing tube CT, comprising a wire supporting rotating body 8 and the wire supporting rotating body. A supporting structure 9 rotatably supported,
A plurality of wire fitting recesses 8a to 8j having different shapes and sizes corresponding to wires having different thicknesses are formed in the wire supporting rotating body at intervals in a rotating direction, and the shape and dimensions of the wire fitting recesses are formed. Is a coated tube mounting tool that is fixed to the coated portion of the coated electric wire so that the coated tube that is moved to a position covering the crimping portion cannot pass through.

[2] The covering according to the above [1], wherein there are provided rotating body fixing structures 10, 8p for fixing the wire supporting rotating body 8 to the support structure 9 at a predetermined position. Tube fittings.

[3] The rotating body fixing structure is provided in the through hole or recess 8p formed in the wire supporting rotating body 8 and the support structure 9 and fitted into the through hole or recess 8p. The fitting rod is attached to the support structure so as to be movable between a retracted position and a fitted position, and when the fitting rod is at the retracted position, the electric wire supporting rotating body is The rotation according to the above-mentioned [2], wherein the rotation is allowed, and when the fitting rod is at the fitting position, its tip is fitted into the through hole or the concave portion to prevent the rotation of the wire supporting rotating body. Coated tube fitting.

[0047]

According to the crimping device of the present invention, the lower die supporting the crimp terminal is the first die supporting the core holding portion of the crimp terminal.
And a second support portion for supporting the mounting seat of the crimp terminal. The second support portion is provided with an engagement structure for engaging with the mounting seat and positioning the mounting seat. The first supporting portion can position and support the core wire holding portion of the crimp terminal, and the second supporting portion can position and support the mounting seat by the action of the engagement structure. Thereby, the contact position between the core wire holding portion of the crimp terminal and the upper die does not shift, and the crimp terminal can be crimped at the correct crimp position.

Further, according to the present invention, the engaging structure comprises an engaging member which engages with the mounting seat, and an engaging member posture change permitting mechanism which permits the posture of the engaging member. However, before the crimping of the crimp terminal, the engaging member is held at a fixed position to be engaged with the mounting seat, and during the crimping, the engagement between the mounting seat and the engaging member is maintained, and the mounting seat is allowed to extend. In addition, since the posture of the engagement member is changed, it is possible to prevent the mounting seat from being deformed when the crimp terminal is crimped.

Further, according to the present invention, since the positioning of the terminal crimping portion is mechanically held, there is no danger of pinching of the hand or finger, and the visual alignment step can be omitted. Therefore, the crimping operation can be performed accurately, quickly and safely.

[Brief description of the drawings]

FIGS. 1A and 1B are longitudinal sectional views showing an example of an embodiment of the present invention. FIG. 1A shows a state before crimping of a crimp terminal, and FIG. ing.

FIG. 2 is a perspective view showing a configuration of a lower mold member used in the embodiment of the present invention.

FIG. 3 is a perspective view illustrating a configuration example of an entire embodiment of the present invention.

FIG. 4 is a front view showing a configuration of a rotating body for supporting electric wires used in an embodiment of the present invention.

FIGS. 5A to 5C are explanatory diagrams showing a procedure for attaching an insulating coating tube to a crimp portion of a crimp terminal.

6 (A) to 6 (D) are explanatory views showing displacement of crimping positions of crimp terminals by a conventional crimping device.

FIG. 7 is a front view showing a finished form of an end portion of the wire to which the crimp terminal is crimped.

[Explanation of symbols]

 T crimp terminal T1 core wire holding portion T2 mounting seat 1 upper die 2 lower die first support portion 3 lower die second support portion 4 engaging member 4A contact portion 4a through hole 4B engaging portion 4B1 first surface portion 4B2 Second surface portion 4B3 Tapered surface portion 5 Rod member 5a Stopper member (head) 6 Restoring force generating member (coil spring) L Electric wire C Core wire IC Coating portion CT Insulated coating tube 7 Electric wire support (Coated tube mounting device) 8 Electric wire support Rotating body 8a to 8j Electric wire fitting recess 8p Through hole 9 Support structure 10 Rod 11 Hydraulic cylinder as type drive mechanism

Claims (9)

(57) [Claims] 1. A mounting seat (T2) and a core wire holding portion (T1).
A lower mold (2, 3) having a crimp terminal (T) having the core wire (C) of the electric wire (L) inserted into the core wire holding portion; and the core wire holding portion between the lower mold. An upper mold (1) for deforming the core wire holding portion by being sandwiched to crimp the core wire (C) and the core wire holding portion (T1), and to move the lower mold and the upper mold closer or farther apart And a die drive mechanism for displacing at least one of the lower die (2, 3) and the upper die (1), wherein the lower die supports the core wire holding part (T1). And a second support portion (3) for supporting the mounting seat (T2). The second support portion (3) engages with the mounting seat. An engagement structure (4-6) for positioning the mounting seat is provided, and the engagement structure (4-6) engages with the mounting seat (T2). A member (4) and an engagement member posture change permitting mechanism (5, 6) for permitting a change in the posture of the engagement member. The engaging member (4) is held at a fixed position for engaging with the mounting seat (T2), and the engagement between the mounting seat (T2) and the engaging member (4) is maintained during crimping. Further, the crimping device is configured to change the posture of the engaging member (4) so as to allow the mounting seat (T2) to extend. 2. A lower mold (2, 3) which integrally includes a mounting seat and a core wire holding portion and supports a crimp terminal in which a core wire of a covered electric wire is inserted into the core wire holding portion; An upper mold (1) for deforming the core wire holding portion by sandwiching the core wire holding portion and crimping the core wire and the core wire holding portion, and for bringing the lower die and the upper die closer to or away from each other A crimping device comprising a mold driving mechanism for displacing one of the lower mold and the upper mold, wherein the lower mold has a first support portion (2) for positioning and supporting the core wire holding portion and the mounting. Second support for supporting the seat (3)
The second support portion is provided with an engagement structure (4 to 6) for engaging with a tip portion of the attachment seat to position the attachment seat. An engagement member (4) provided on an end portion of the support portion (3) opposite to the first support portion (2) and engaged with the distal end portion of the mounting seat; An engaging member posture change allowing mechanism (5, 6) for allowing a change in the posture of the member (4), wherein the engaging member posture change allowing mechanism (5, 6) includes the crimp terminal before crimping. The mounting member (4) is held at a fixed position for engaging the mounting seat (T2) on the second support portion and engaging with the mounting seat. T2), the posture of the engaging member is changed so as to maintain the engagement between the engaging member (4) and allow the mounting seat to extend. A crimping device characterized by being configured as follows. 3. An engagement member posture change permitting mechanism (5, 5).
6) connecting the engaging member (4) to the second support portion (3);
A guide mechanism (4a, 5) for guiding in a direction in which the guide member comes into contact with or away from the guide member; Mechanism (5a, 6, 13),
3. The crimping apparatus according to claim 1, wherein the holding force is set to be smaller than a force applied to the engagement member by the extension of the mounting seat during the crimping. 4. The guide mechanism is fixed to the second support part (3), and is fixed to the first support part (2) and the second support part (3).
Rod member (5) extending in the direction in which the support portions (3) are lined up
And a through-hole (4a) formed in the engaging member (4) and through which the rod member (5) penetrates loosely. The holding force generating mechanism includes a non-fixed end of the rod member (5). A restoring member (6) disposed between the stopper member and the engaging member (4), which is fixed between the stopper member and the engaging member (4), and which contracts when an external force is applied and recovers when there is no external force; The crimping device according to claim 3, wherein the holding force is obtained by a restoring force generated by the restoring force generating member (6). 5. The cylindrical rod member fixed to the second support portion and extending in a direction in which the first support portion and the second support portion are arranged. When,
The engaging member (4) includes a through hole (4a) having a diameter larger than an outer diameter of the rod member and penetrating the rod member. From a stopper member (5a, 13) attached to the non-fixed end side and a coil spring (6) disposed between the stopper member and the engaging member and through which the rod member (5) passes. The crimping device according to claim 4, wherein the holding force is obtained by a spring force of the coil spring. 6. The mounting member (T2) is provided with the engaging member (4).
), And an abutting portion (4A) that abuts on an end surface of the second support portion (3), the abutting portion (4A). The through-hole (4a) is formed in the first surface portion (4B1) with which the edge portion of the mounting seat comes into contact, and the second support portion (3).
A second space extending along the mounting seat with a gap between the mounting seat and the mounting seat supported to allow insertion of the mounting seat, and preventing the edge of the mounting seat from rising during crimping.
Surface portion (4B2) and a tapered surface portion formed continuously with the second surface portion (4B2) and inclined in a direction away from the second support portion to facilitate insertion of the mounting seat into the gap. The crimping device according to claim 4 or 5, further comprising (4B3). 7. The crimping apparatus according to claim 2, wherein an electric wire support (7) for supporting a covered portion (IC) of the covered electric wire (L) is disposed in front of the lower die. 8. The electric wire supporter (7) includes an electric wire supporting rotating body (8) and a supporting structure (9) that rotatably supports the electric wire supporting rotating body. The rotating body (8) has a plurality of wire fitting recesses (8a to 8a) having different shapes and sizes corresponding to wires having different thicknesses.
8. The crimping device according to claim 7, wherein 8j) are formed at intervals in the rotation direction. 9. The shape and dimensions of the wire fitting recesses (8a to 8j) are determined by the positions of the core wires holding the core wire holding portion of the crimp terminal after the crimp terminal is mounted on the sheath portion (IC) of the sheath wire in advance and the crimping is completed. Insulated tube (C
9. The crimping device according to claim 8, wherein T) is defined so as not to pass through.