JP2023094353A - Terminal crimping device - Google Patents

Abstract

To provide a technique capable of suppressing friction of a terminal and a grip part even in the case where the terminal is extended in a long direction at a time of a terminal crimp.SOLUTION: A terminal crimping device 10 comprises: a terminal holder 30 that holds a first terminal and a second terminal; a crimp molding 50 that crimps the first terminal and the second terminal held by the terminal holder 30 to a first electric wire and a second electric wire; and a molding movement part 20 that relatively moves a top die 54 and a bottom die 51 so that they approach or separate from each other. The terminal holder 30 contains a grip part 36 that grips each of the first terminal and the second terminal. A grip discharge part 60 for discharging the grip part 36 is provided after it starts the relative movement so that the top die 54 and the bottom die 51 approach each other, and before the top die 54 and the bottom die 51 approach each other most closely and the crimp of the first terminal and the second terminal are completed.SELECTED DRAWING: Figure 4

Description

The present disclosure relates to a terminal crimping device.

Patent Literature 1 discloses a terminal crimping device for crimping a terminal onto an end of an electric wire. The terminal crimping device described in Patent Literature 1 is provided with a terminal holder that holds two terminals, so that the terminals can be crimped simultaneously to the ends of two electric wires forming a twisted wire with high accuracy. In the terminal crimping device described in Patent Literature 1, the terminal holder has a box portion gripping portion that grips the box portions of the terminals, thereby stabilizing the postures of the two terminals.

JP 2018-88351 A

When the terminal is crimped, the terminal may be deformed so as to extend in the longitudinal direction. It is desired to be able to suppress rubbing between the terminal and the grip portion during the deformation.

Therefore, it is an object of the present invention to provide a technique capable of suppressing friction between a terminal and a grip portion even when the terminal extends in the longitudinal direction during crimping of the terminal.

A terminal crimping device of the present disclosure is a terminal crimping device that simultaneously crimps a first terminal onto a first wire and crimps a second terminal onto a second wire, wherein the first terminal and the second terminal are Between a terminal holder that extends in a first direction and is aligned in a second direction that intersects with the first direction, a lower die that supports the first terminal and the second terminal, and the lower die. and an upper mold for sandwiching the first terminal and the second terminal to deform the crimping portion of the first terminal and the crimping portion of the second terminal, wherein the first terminal held by the terminal holder and the A crimping die for crimping a second terminal to the first wire and the second wire, and a third direction intersecting the first direction and the second direction, the upper die and the lower die are moved toward and away from each other. the terminal holder includes a front positioning part that covers the first terminal and the second terminal from the front along the first direction; and a gripping portion that grips the first terminal and the second terminal respectively by moving in a direction to move, and after the upper mold and the lower mold start relative movement so that they approach each other, the upper mold and a terminal crimping device, further comprising: a grip release portion for releasing the grip portion before the lower die comes closest and the crimping of the first terminal and the second terminal is completed.

According to the present disclosure, it is possible to suppress friction between the terminal and the gripping portion even when the terminal extends in the longitudinal direction during crimping of the terminal.

FIG. 1 is a plan view showing an example of an electric wire with a terminal manufactured by a terminal crimping machine. FIG. 2 is a schematic side view showing the terminal crimping device according to Embodiment 1. FIG. FIG. 3 is a schematic front view showing a crimping die and a terminal holder. FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. FIG. 5 is an exploded perspective view showing the terminal holder. FIG. 6 is an exploded perspective view showing a wire support jig. FIG. 7 is a flow chart of the terminal crimping operation using the terminal crimping device. FIG. 8 is a schematic side view showing the terminal crimping device during setting. FIG. 9 is a diagram for explaining how the grip portion and the lid are opened. FIG. 10 is a diagram for explaining how the grip and the lid are opened. FIG. 11 is a diagram for explaining how the grip and the lid are opened. FIG. 12 is a flow chart illustrating the actions that occur during the crimping process. FIG. 13 is a diagram for explaining how the upper mold comes into contact with the terminal. FIG. 14 is a diagram for explaining how the terminal is crimped onto the electric wire. FIG. 15 is a diagram for explaining how the pressing member comes into contact with the release member. FIG. 16 is a diagram for explaining how the pressing member presses the opening member. FIG. 17 is a diagram for explaining how the grip is opened.

[Description of Embodiments of the Present Disclosure]
First, the embodiments of the present disclosure are listed and described.

The terminal crimping device of the present disclosure is as follows.

(1) A terminal crimping device that simultaneously crimps a first terminal onto a first wire and crimps a second terminal onto a second wire, wherein the first terminal and the second terminal extend in a first direction. a terminal holder held in a state of being aligned in a second direction intersecting the first direction; a lower die supporting the first terminal and the second terminal; and the first terminal between the lower die. and an upper mold that sandwiches the second terminal and deforms the crimping portion of the first terminal and the crimping portion of the second terminal, wherein the first terminal and the second terminal held by the terminal holder are The crimping die for crimping the first electric wire and the second electric wire, and the upper mold and the lower mold are relatively moved along a third direction intersecting the first direction and the second direction so as to approach and separate from each other. a die moving part, wherein the terminal holder is configured to move in a direction intersecting the first direction and a front positioning part that covers the first terminal and the second terminal from the front along the first direction; and a gripping portion that grips the first terminal and the second terminal, respectively, and after the upper mold and the lower mold start relative movement so that they approach each other, the upper mold and the lower mold The terminal crimping device is provided with a gripping release portion that releases the gripping portion before the crimping of the first terminal and the second terminal is completed. After the upper mold and the lower mold start to move relative to each other and before the crimping of the first terminal and the second terminal is completed, the terminal is finished being stretched by the grip release part releasing the grip part. The previous gripping of the terminal by the gripping portion is released. As a result, even when the terminal extends in the longitudinal direction during crimping of the terminal, it is possible to suppress friction between the terminal and the grip portion.

(2) In the terminal crimping device of (1), the gripping portion may grip the first terminal and the second terminal until the upper die contacts the crimping portion. Thereby, the positional accuracy of the first terminal and the second terminal with respect to the first electric wire and the second electric wire becomes higher.

(3) In the terminal crimping device of (1) or (2), the gripping release portion may release the gripping portion before compression deformation of the crimping portion starts. As a result, the gripping portion is released before the first terminal and the second terminal start to stretch, so it becomes easier to suppress rubbing caused by the stretching of the first terminal and the second terminal.

(4) In the terminal crimping device according to any one of (1) to (3), the gripping portion includes a movable gripping piece that contacts the first terminal and the second terminal, and a movable gripping piece that contacts the first terminal. an urging member that urges the terminal and the second terminal; the grip opening portion includes an opening member provided on the terminal holder separately from the grip portion; The movable gripping piece is pressed by the opening member and moves in the second direction against the biasing force of the biasing member to grip the movable gripping piece. part can be opened. Thereby, the grasping portion can be opened by operating the release member at a location away from the grasping portion.

(5) In the terminal crimping device of (4), the grip release section includes a pressing member that is relatively moved toward and away from the terminal holder by the mold moving section, and the pressing member moves toward and away from the terminal holder. The opening member may be moved in the first direction by moving along three directions and pressing the opening member. As a result, the force of the mold moving portion is converted into a force for opening the gripping portion via the gripping opening portion. This makes it possible to omit the control of the grasping release portion using software.

(6) In the terminal crimping device of (4) or (5), the terminal holder includes: a receiving portion for receiving an opening/closing operation; It may further include a moving opening and closing part. This makes it easier for the operator to open and close the grip.

(7) In the terminal crimping device of (6), the terminal holder further includes a lid that presses the first terminal and the second terminal from the third direction, and the opening/closing section includes the The lid may be opened and closed together with the grip opening portion in response to an opening/closing operation. As a result, the operator can open and close the lid and the grip opening portion with one operation.

[Details of the embodiment of the present disclosure]
A specific example of the terminal crimping device of the present disclosure will be described below with reference to the drawings. The present disclosure is not limited to these examples, but is indicated by the scope of the claims, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

[Embodiment 1]
A terminal crimping device 10 according to the first embodiment will be described below.

<Electric wire with terminal>
First, the terminal-equipped electric wire 1 manufactured by the terminal crimping device 10 will be described first. FIG. 1 is a plan view showing an example of a terminal-equipped electric wire 1 manufactured by a terminal crimping device 10. FIG.

The terminal-equipped electric wire 1 includes an electric wire 3 and a terminal 7 crimped to an end of the electric wire 3 . In this embodiment, two wires 3 are twisted together to form a twisted wire 2 . One of the two electric wires 3 is the first electric wire 3A and the other is the second electric wire 3B. The terminal 7 connected to the first electric wire 3A is the first terminal 7A, and the terminal 7 connected to the second electric wire 3B is the second terminal 7B. Furthermore, in this embodiment, an example in which the terminal-equipped electric wire 1 is provided with a jacket 6 that covers the twisted electric wire 2 will be described.

Each electric wire 3 includes a core wire 4 and an insulating coating 5 surrounding the core wire 4 . The core wire 4 is made of a conductive material such as copper or aluminum. The core wire 4 may be composed of one element wire, or may be composed of a plurality of element wires. When the core wire 4 is composed of a plurality of strands, the strands may or may not be twisted together. The insulating coating 5 is formed by extruding an insulating material such as resin (for example, polyethylene or polyvinyl chloride) around the core wire 4, for example.

The jacket 6 is also called a sheath or the like, and is formed by extruding an insulating material such as resin (for example, polyethylene or polyvinyl chloride) around the two wires 3 twisted together.

The jacket 6 does not exist at the end of the terminal-equipped electric wire 1 because it is peeled off. Therefore, two wires 3 are exposed at the end of the terminal-equipped wire 1 . The two exposed ends of the electric wires 3 are untwisted and then the insulating coating 5 is stripped. As a result, the ends of the core wires 4 are exposed. A terminal 7 is connected to a region including the exposed end of the core wire 4 .

The terminal 7 includes a crimp portion 8 and a mating connection portion 9 . The crimping portion 8 includes a core wire crimping portion 8a and a covering crimping portion 8b. Each crimping portion 8 includes a bottom portion and crimping pieces formed upright on the bottom portion. Then, each crimping portion 8 is sandwiched and pressed by a mold of a terminal crimping device 10 together with a portion of the wire 3 to be crimped (the core wire 4 for the core wire crimping portion 8a and the insulating coating 5 for the covering crimping portion 8b). As a result, each crimping piece is crimped in a state in which a portion of the wire 3 to be crimped is wrapped around, whereby the terminal 7 and the wire 3 are connected. The mating connection portion 9 may be formed, for example, in the shape of a male terminal or may be formed in the shape of a female terminal. Here, an example in which the mating connection portion 9 is formed in the shape of a female terminal will be described. Accordingly, the mating connection portion 9 has a box portion formed in a box shape. Inside the box portion, a contact portion is formed that can be connected to a mating tab terminal inserted into the box portion.

The twisted electric wire 2 processed in this way is incorporated into a wire harness mounted on a vehicle, and is used, for example, as a cable for high-speed communication conforming to the Ethernet (registered trademark) standard.

However, the electric wire 3 to be manufactured is not limited to the above. For example, a single electric wire 3 may exist alone. Further, for example, even when a plurality of electric wires 3 are provided, they may not be twisted together. Further, for example, there may be a case where the plurality of core wires 4 do not each have an independent insulating coating 5 and the plurality of core wires 4 share one insulating coating 5 . Also, for example, the electric wire 3 may not have the jacket 6 . Also, the terminals 7 are not limited to those described above. For example, the crimping portion 8 of the terminal 7 may omit the covering crimping portion 8b and have only the core wire crimping portion 8a.

<Terminal crimping device 10>
Next, the terminal crimping device 10 will be described with further reference to FIGS. 2 to 6. FIG. FIG. 2 is a schematic side view showing the terminal crimping device 10 according to the first embodiment. FIG. 3 is a schematic front view showing the crimping die 50 and the terminal holder 30. FIG. FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. FIG. 5 is an exploded perspective view showing the terminal holder 30. FIG. FIG. 6 is an exploded perspective view showing the wire support jig 70. As shown in FIG.

2 to 6 show X, Y and Z directions which are orthogonal to each other. The X direction here is the longitudinal direction of the terminal 7 set at a predetermined position in the terminal crimping device 10 . The Y direction is the parallel direction of the terminals 7 set at predetermined positions in the terminal crimping device 10 . The Z direction is the height direction of the terminal 7 set at a predetermined position in the terminal crimping device 10 . The X direction corresponds to the first direction, the Y direction corresponds to the second direction, and the Z direction corresponds to the third direction.

The terminal crimping device 10 simultaneously crimps the first terminal 7A onto the first electric wire 3A and crimps the second terminal 7B onto the second electric wire 3B. The terminal crimping device 10 includes a mold moving part 20 , a terminal holder 30 , a crimping mold 50 , a grip release part 60 and a wire support jig 70 . The mold moving part 20 , the terminal holder 30 , the crimping mold 50 and the wire support jig 70 are attached to the base 11 .

Base 11 includes frame 12 , stage 13 and slide base 14 . A stage 13 is fixed to the lower portion of the frame 12 . A mold moving part 20 is attached to the upper part of the frame 12 .

The slide base 14 is supported on the stage 13 so as to be movable along the X direction. The slide base 14 can reciprocate between a first position and a second position along the X direction. The first position is the position where the terminal 7 is crimped, and is the position shown in FIG. The second position is a position for setting and removing the terminal 7, which is the position shown in FIG. The slide base 14 is regulated so as not to move outside the first position (right side of the position in FIG. 2) and outside the second position (left side of the position in FIG. 8) along the X direction. ing. The movement of the slide base 14 in the Y direction and the movement in the Z direction are restricted by the frame 12 . A holder mounting portion 15 and a support jig mounting portion 16 are provided on the slide base 14 .

The holder mounting portion 15 and the support jig mounting portion 16 are separated along the X direction. A terminal holder 30 is attached to the holder attachment portion 15 . The terminal holder 30 is mounted on the holder mounting portion 15 so as to move integrally with the slide base 14 . For example, as shown in FIG. 8, the holder mounting portion 15 and the terminal holder 30 may be mounted by fitting the projection as the holder mounting portion 15 into the recess of the terminal holder 30, or by screwing. may be

A wire support jig 70 is attached to the support jig attachment portion 16 . The wire support jig 70 is mounted on the support jig mounting portion 16 so as to move integrally with the slide base 14 . Here, the support jig mounting section 16 includes a support base 17 and a lock section 18 . The support base 17 protrudes from the slide base 14 in the Z direction. A wire support jig 70 is mounted on the support table 17 . A convex portion 17 a is provided on the upper surface of the support base 17 . The convex portion 17 a is used for positioning the support base 17 and the wire support jig 70 . The lock portion 18 is provided on the support base 17 . The lock portion 18 locks to the lock receiving portion 78 of the wire support jig 70 . A handle 19 is provided on the support base 17 . When the operator moves the slide base 14 in the X direction, the operator can hold the handle 19 and move it.

The mold moving part 20 relatively moves the upper mold 54 and the lower mold 51 of the mold in the approaching/separating direction. The upper die 54 and the lower die 51 relatively move along the Z direction so as to approach and separate from each other. The mold moving section 20 includes, for example, a drive source 21 and a transmission mechanism. The drive source 21 is fixed to the frame 12 . The drive source 21 is configured by an actuator such as a cylinder or a motor. The transmission mechanism transmits the driving force of the driving source 21 to the upper mold 54 to reciprocate the upper mold 54 with respect to the lower mold 51 . The transmission mechanism is a ram member 22 supported movably along the third direction with respect to the frame 12, and a cam mechanism (not shown) interposed between the ram member 22 and the drive source 21 for reciprocating the ram member 22. etc.

The terminal holder 30 holds the first terminals 7A and the second terminals 7B so that they extend in the X direction and are aligned in the Y direction. The state of extending in the X direction is a state in which the longitudinal direction of the terminal 7 is along the X direction. The longitudinal direction of the terminal 7 is the direction in which the crimp portion 8 and the mating connection portion 9 are aligned. The terminal 7 is held so that its width direction is parallel to the Y direction and its height direction is parallel to the Z direction. The height direction of the terminal 7 is the direction in which the crimping piece (see FIG. 13) extends before crimping. The terminal holder 30 includes a holder body 31 , a front positioning portion 33 and a grip portion 36 . A portion of the holder main body 31 also serves as a grip portion 36 . Here, terminal holder 30 further includes lid 40 , receiving portion 43 , and opening/closing portion 44 .

The holder main body 31 movably supports the front positioning portion 33 and the grip portion 36 . The holder main body 31 is formed in the shape of a rectangular parallelepiped block. The holder main body 31 is formed with recesses, screw holes, through holes, and the like for attaching each part. Further, here, the holder main body 31 is provided with a stationary grip piece 31a and a support surface 31b.

The stationary gripping piece 31a is positioned between the first terminal 7A and the second terminal 7B along the Y direction. The stationary gripping piece 31a functions as a partition wall that separates the first terminal 7A and the second terminal 7B. In addition, the stationary gripping piece 31a constitutes a part of the gripping portion 36. As shown in FIG. The support surface 31b is provided on each of one side and the other side of the stationary gripping piece 31a. The supporting surface 31b on one side of the stationary gripping piece 31a supports the first terminal 7A, and the supporting surface 31b on the other side of the stationary gripping piece 31a supports the second terminal 7B.

The front positioning portion 33 covers the first terminal 7A and the second terminal 7B from the front along the X direction. The front positioning part 33 is provided so as to be able to abut against the tip surfaces along the longitudinal direction of the first terminal 7A and the second terminal 7B. Further, the front positioning portion 33 is pushed by the first terminal 7A and the second terminal 7B when the first terminal 7A and the second terminal 7B are extended, and moves in the X direction. Specifically, the front positioning portion 33 is housed in the positioning portion housing recess 32 a of the holder body 31 . The positioning portion accommodation recess 32 a is longer in the X direction than the front positioning portion 33 . The front positioning portion 33 is movable in the X direction inside the positioning portion accommodating concave portion 32a. A positioning portion biasing member 34 is interposed between the front positioning portion 33 and the holder main body 31 . The positioning portion biasing member 34 biases the front positioning portion 33 toward the terminal 7 along the X direction.

A coil spring is used as the positioning portion biasing member 34 . However, as the positioning portion biasing member 34, another spring member such as a leaf spring or a member made of an elastic material such as rubber may be used. A member similar to the positioning portion biasing member 34 can also be employed for each of the following biasing members.

The positioning portion accommodation recess 32a opens in the Z direction. The front positioning part 33 is inserted into the positioning part accommodation recess 32a along the Z direction. An upper portion of the front positioning portion 33 along the Z direction is pressed by a positioning portion pressing plate 35 . Also, the positioning portion pressing plate 35 contacts the front positioning portion 33 in the X direction. The position at which the positioning portion pressing plate 35 contacts may be the initial position along the X direction of the front positioning portion 33 . As a result, when the length of the terminal 7 changes, the initial position of the front positioning portion 33 along the X direction can be changed to a position corresponding to the length of the terminal 7 by changing the size of the positioning portion pressing plate 35 . can do.

The gripping portion 36 grips the first terminal 7A and the second terminal 7B from a direction crossing the X direction. Here, the gripping portion 36 grips the first terminal 7A and the second terminal 7B from the Y direction. The gripping portion 36 has a movable gripping piece 37 and a gripping portion biasing member 38 in addition to the stationary gripping piece 31a. The movable gripping piece 37 contacts the terminal 7 .

The movable gripping pieces 37 are provided on both sides of the stationary gripping piece 31a along the Y direction. Each movable gripping piece 37 faces the immovable gripping piece 31a. The movable gripping piece 37 and the immovable gripping piece 31a hold the terminal 7 in the Y direction. The movable grip piece 37 is movable in the Y direction with respect to the holder body 31 . The movable gripping piece 37 has a gripping block 37a, a pressure receiving portion 37b (see FIG. 11), and a guide portion 37c. The gripping block 37a grips the terminal 7 together with the stationary gripping piece 31a. The gripping block 37 a is provided on the upper portion of the movable gripping piece 37 . The pressure receiving portion 37 b is a portion that is pressed by the opening member 61 . The pressure receiving portion 37b has an inclined surface that is inclined with respect to both the X direction and the Y direction in a cross section taken along a plane parallel to the XY plane. The guide portion 37c is a portion that guides the movement of the movable gripping piece 37 in the Y direction. A pair of guide portions 37c are provided. The pair of guide portions 37c are separated in the Z direction and extend parallel to the Y direction. The pressure receiving portion 37b and the guide portion 37c are provided on the movable gripping piece 37 below the gripping block 37a. The guide portion 37c is provided on the side of the lower die 51 along the X direction. The pressure receiving portion 37b is provided on the side opposite to the guide portion 37c along the X direction.

The movable grip piece 37 is housed in the grip portion housing recess 32 b of the holder body 31 . The grip portion accommodation recess 32b is longer than the movable grip piece 37 in the Y direction. The movable gripping piece 37 can move in the Y direction inside the gripping portion accommodating recess 32b. The grip portion accommodation recess 32b has a pair of grooves elongated in the Y direction corresponding to the pair of guide portions 37c. By moving the pair of guide portions 37c along the pair of grooves, it becomes difficult for the movable gripping piece 37 to rattle when it moves along the Y direction. A gripping portion biasing member 38 is interposed between the movable gripping piece 37 and the holder main body 31 . The gripping portion biasing member 38 biases the movable gripping piece 37 toward the terminal 7 along the Y direction. The grip portion biasing member 38 is positioned between the pair of guide portions 37c along the Z direction.

The grip portion accommodation recess 32b opens in the X direction. The movable gripping piece 37 and the gripping portion urging member 38 are inserted into the gripping portion accommodating concave portion 32b along the X direction. The opening sides along the X direction of the movable gripping piece 37 and the gripping portion biasing member 38 are pressed by a gripping portion pressing plate 39 .

The lid 40 presses the terminals 7 from above in the Z direction. The lid 40 is attached to the holder main body 31 so as to be openable and closable. The lid 40 has a lid base portion 40a, a projecting piece 40b and a connecting piece 40c. The lid base portion 40 a is fixed to the lid support member 41 . The lid supporting member 41 is rotatably attached to the holder main body 31 via a rotating pin or the like. The lid 40 is opened and closed by rotating the lid support member 41 . The extending direction of the rotating shaft of the lid support member 41 is parallel to the Y direction. The rotating shaft of the lid supporting member 41 is separated from the opening/closing portion 44 . The lid supporting member 41 is urged in the closing direction of the lid 40 by a lid urging member 42 . The protruding piece 40b protrudes from the lid base portion 40a. A pair of projecting pieces 40b are provided apart in the Y direction. The connecting piece 40c connects the pair of protruding pieces 40b at the tip of the protruding piece 40b. The connecting piece 40c presses the terminal 7 upward. The holder main body 31 is formed with a groove into which the connecting piece 40c is fitted when the lid 40 is closed. Further, the stationary gripping piece 31a and the movable gripping piece 37 are formed with a step corresponding to the connecting piece 40c.

The reception unit 43 receives an opening/closing operation. The reception unit 43 is the dial 43 . The receiving portion 43 is rotatably supported by the holder body 31 . The rotation operation of the dial 43 is the opening/closing operation.

The opening/closing portion 44 receives the opening/closing operation received by the receiving portion 43 and moves an opening member 61, which will be described later, in the X direction. Here, the opening/closing part 44 opens and closes the lid 40 together with the grip opening part 60 in response to the opening/closing operation received by the receiving part 43 . The opening/closing part 44 is a shaft rotated by the dial 43 . The opening/closing portion 44 has an opening member support portion 45 and a lid support portion 46 . An opening member supporting portion 45 is provided on a portion of the opening/closing portion 44 along the axial direction, and a lid supporting portion 46 is provided on the other portion. Here, lid support portions 46 are provided on both sides of the opening member support portion 45, respectively.

The opening member support portion 45 supports the opening member 61 while being in contact with the opening member 61 . The outer surface of the open member support portion 45 has a curved surface 45a and a flat surface 45b. The flat surface 45b is closer to the axis than the curved surface 45a. As shown in FIG. 4, the cross-section of the open member support portion 45 has a shape in which the circumferential surface centered on the axis is notched with two parallel chords. The arc of which part of the circumferential surface remains is part of the curved surface 45a, and the chord is part of the flat surface 45b. The length of the arc is one quarter of the circumference. Therefore, each time the receiving portion 43 rotates a quarter turn, the surface of the opening member supporting portion 45 that contacts the opening member 61 from the X direction is switched between the curved surface 45a and the flat surface 45b in order.

The lid support portion 46 contacts and supports the lid 40 . Here, the lid supporting portion 46 contacts and supports the lid supporting member 41 . The outer surface of the lid support portion 46 also has a curved surface 46 a and a flat surface 46 b similar to the outer surface of the opening member support portion 45 . A state in which the curved surface 46a supports the lid support member 41 from the Z direction is a state in which the lid 40 is opened. The state in which the flat surface 46b supports the lid supporting member 41 from the Z direction is the state in which the lid 40 is closed. Each time the receiving portion 43 rotates a quarter turn, the surface of the lid supporting portion 46 that contacts the lid 40 from the Z direction is switched between the curved surface 46a and the flat surface 46b in order.

The crimping die 50 crimps the first terminal 7A and the second terminal 7B held by the terminal holder 30 to the first electric wire 3A and the second electric wire 3B. The crimping die 50 includes a lower die 51 and an upper die 54 . The upper mold 54 and the lower mold 51 are arranged to face each other. The upper die 54 and the lower die 51 sandwich and crimp the terminal 7 held by the terminal holder 30 and the wire 3 supported by the wire support jig 70 .

The lower mold 51 supports the first terminals 7A and the second terminals 7B. The lower mold 51 includes a core wire crimp portion lower mold 51a and a covering crimp portion lower mold 51b. A lower part of each of the lower molds 51 a and 51 b serves as a holder attachment part 52 , and an upper part thereof serves as a terminal support part 53 . The holder attachment portion 52 is formed in a rectangular plate shape. The holder attachment portion 52 is attached to the terminal holder 30 by screwing, for example. The terminal support portion 53 protrudes upward from the widthwise intermediate portion of the holder attachment portion 52 . The upper surface of the terminal support portion 53 serves as a support surface 31b for supporting the terminals 7. As shown in FIG. The terminal supporting portion 53 of the core wire crimping portion lower mold 51a supports the core wire crimping portion 8a. The terminal supporting portion 53 in the lower mold 51b for covering crimp portion supports the covering crimp portion 8b.

The upper die 54 includes a core wire crimping portion upper die 54a and a covering crimping portion upper die 54b. Each upper mold 54a, 54b is formed in a rectangular plate shape. An upper portion of each upper die 54 is movably supported together with the ram member 22 . A terminal deformation portion 55 is formed in the lower portion of each upper mold 54 . The terminal deforming portion 55 deforms the terminal 7 when the terminal 7 is sandwiched together with the lower die 51 . The terminal deforming portion 55 in the core wire crimping portion upper die 54a deforms the core wire crimping portion 8a. The terminal deforming portion 55 in the covering crimp portion upper mold 54b deforms the covering crimp portion 8b.

The grip opening 60 opens the grip 36 during the crimping process. Here, the grip opening portion 60 includes an opening member 61 and a pressing member 63 .

The opening member 61 is provided on the terminal holder 30 separately from the grip portion 36 . The release member 61 has a pressing portion 61a, a first pressure receiving portion 61b, and a second pressure receiving portion 61c. The pressing portion 61 a is a portion that presses the movable gripping piece 37 . The first pressure receiving portion 61 b is a portion that is pressed by the pressing member 63 . The second pressure receiving portion 61 c is a portion that is pressed by the opening/closing portion 44 . A pressing portion 61a is provided at one end of the opening member 61 along the X direction, and a first pressure receiving portion 61b and a second pressure receiving portion 61c are provided at the other end. The second pressure receiving portion 61c is provided closer to one end than the first pressure receiving portion 61b.

The pressing portion 61a presses the pressure receiving portion 37b of the movable gripping piece 37 to move the movable gripping piece 37 in the Y direction. Here, one release member 61 is provided with two pressing portions 61a. One of the two pressing portions 61a moves one of the two movable gripping pieces 37 to one side along the Y direction. The other of the two pressing portions 61a moves the other of the two movable gripping pieces 37 to the other side along the Y direction. The opening member 61 is movable in the X direction. The opening member 61 and the movable gripping piece 37 are provided with a force converting portion that converts the force in the X direction into the force in the Y direction. At least one of the pressing portion 61a of the opening member 61 and the pressure receiving portion 37b of the movable gripping piece 37 has an inclined surface formed so as to be inclined in both the X direction and the Y direction. . Here, the pressing portion 61a of the opening member 61 and the pressing portion 37b of the movable gripping piece 37 are each formed with an inclined surface. Since the inclined surfaces of the two pairs of pressing portions 61a and pressing portions 37b are opposite to each other, the two movable gripping pieces 37 are pressed in the same direction along the X direction by the single release member 61, and are moved in the Y direction. move in opposite directions to each other.

The opening member 61 is housed in the opening member housing recess 32c of the holder main body 31. As shown in FIG. The open member accommodation recess 32c is adjacent to the grip part accommodation recess 32b along the X direction. The opening member 61 is accommodated in the opening member accommodation recess 32c at the initial position. The opening member 61 is movable in the X direction inside the opening member accommodating recess 32c. The opening member 61 moves along the X direction, and the tip of the opening member 61 enters the grip portion accommodation recess 32 b and presses the movable grip piece 37 .

An opening member biasing member 62 is interposed between the opening member 61 and the holder main body 31 . The opening member biasing member 62 biases the opening member 61 toward the side opposite to the movable gripping piece 37 along the X direction. The opening member biasing member 62 is positioned between the two pressing portions 61a.

The open member housing recess 32c opens in the Z direction. The opening member 61 and the opening member biasing member 62 are inserted into the opening member accommodating recess 32c along the Z direction. The opening member accommodation recess 32c is provided below the positioning part accommodation recess 32a along the Z direction. The front positioning portion 33 is positioned above the opening member 61 along the Z direction. The opening sides of the opening member 61 and the opening member biasing member 62 along the Z direction are pressed by the front positioning portion 33 . A support surface 31b that supports the positioning portion is formed at a position higher than the height dimension of the opening member 61 along the Z direction. The front positioning portion 33 and the opening member 61 are not in contact with each other in the Z direction. As a result, when one of the front positioning portion 33 and the opening member 61 moves along the X direction, rubbing against the other is suppressed.

The pressing member 63 is moved relatively to and away from the terminal holder 30 along the Z direction by the mold moving part 20 . The pressing member 63 moves along the Z direction and presses the opening member 61 in the Z direction. The release member 61 pressed by the pressing member 63 moves in the X direction. The pressing member 63 and the opening member 61 are provided with a force converting portion that converts force in the Z direction into force in the X direction. Here, in the cross section of the pressing portion 61a cut along the XZ plane, a sloped surface that slopes in both the X direction and the Z direction is provided at the lower end. When the inclined surface presses the first pressure receiving portion 61b of the opening member 61, the force in the Z direction is converted into the force in the X direction. The pressing member 63 presses the opening member 61 without opening and closing the lid 40 . The pressing member 63 is inserted between the pair of projecting pieces 40b. This allows the gripping portion 36 to be opened without opening the lid 40 during the crimping process.

The opening member 61 is also moved along the X direction by the opening/closing portion 44 . FIG. 4 shows a state in which the curved surface 45a supports the opening member 61 from the Z direction and the flat surface 45b supports the opening member 61 from the X direction. The state shown in FIG. 4 is a state in which the opening member 61 is retracted from the movable gripping piece 37 . When the dial 43 is rotated to rotate the opening/closing portion 44, the curved surfaces 45a and 46a come into contact with the opening member 61 from the X direction. At this time, since the curved surfaces 45a and 46a are farther from the axis than the flat surfaces 45b and 46b, when the curved surfaces 45a and 46a contact the opening member 61 from the X direction, the opening member 61 is pressed in the X direction. Moving.

The curved surfaces 45a and 46a of the opening member supporting portion 45 and the curved surfaces 45a and 46a of the lid supporting portion 46 are shifted about the axis of the opening/closing portion 44 by 90 degrees. The opening/closing portion 44 presses the opening member 61 to open the grip portion 36 when the lid 40 is opened. Further, when closing the lid 40, the pressing force of the opening member 61 is released so that the grasping portion 36 is in the grasping state.

The wire support jig 70 is a member for supporting the wire 3 when crimping the terminal onto the wire 3 . Here, the wire support jig 70 can position and hold the ends of the two wires 3 in the twisted wire 2 . Specifically, the wire support jig 70 includes a first member 71 and a second member 75 .

The first member 71 is a portion that partitions the tip of the twisted wire 2 . The first member 71 has a bar-shaped portion 72 , a wire support portion 73 and a twisted wire support portion 74 . The bar-shaped portion 72 is formed in a long bar-like shape.

The wire support portion 73 is provided at the tip of one end side of the rod-shaped portion 72 so as to protrude in a direction intersecting with the extending direction of the rod-shaped portion 72 . The electric wire support portion 73 is formed with two groove portions 73a that are recessed from the distal edge portion toward the proximal end side and are formed side by side. As a result, the tip of the wire support portion 73 is formed in a comb shape having three teeth. Each groove portion 73a is formed so that a portion of the electric wire 3 where the insulating coating 5 exists can be inserted. Therefore, by inserting the ends of the two electric wires 3 into the respective grooves 73a, the two electric wires 3 are partitioned and held. That is, here, the portion of the wire support portion 73 in which the two groove portions 73a are formed constitutes the partition portion. At this time, it is preferable that the width dimension of the groove portion 73a is set to a dimension that allows the electric wire 3 to be press-fitted. As a result, even when the wire support jig 70 is used with the grooves 73a facing vertically downward, the state in which the partitions hold the wires 3 can be more reliably maintained.

The twisted wire support portion 74 is provided closer to the other end side of the bar-shaped portion 72 than the wire support portion 73 is. The twisted wire support portion 74 has a pair of protruding pieces 40b that protrude from both side edges of the rod-shaped portion 72 . A twisted portion of the twisted electric wire 2 is supported between the pair of projecting pieces 40b. Here, the portion of the twisted wire 2 where the jacket 6 exists is supported by the twisted wire support portion 74 . The distance between the pair of protruding pieces 40b is preferably set to a dimension that allows the jacket 6 to be press-fitted. As a result, even when the wire support jig 70 is used with the twisted wire support portion 74 facing vertically downward, the state in which the jacket 6 is held can be more reliably maintained.

The second member 75 is a portion that holds the intermediate portion of the twisted wire 2 (here, the portion having the jacket 6). The second member 75 is formed in an elongated rectangular parallelepiped shape. In addition, the second member 75 is formed so that a cross section cut along a plane orthogonal to the longitudinal direction is wide. A first groove 76 in which the first member 71 is accommodated is formed in one main surface of the second member 75 . The width dimension of the first groove 76 is set to be approximately the same as the width dimension of the first member 71 . A second groove 77 in which the twisted wire 2 is accommodated and held is formed on the other main surface of the second member 75 facing away from the one main surface. Here, the first groove 76 and the second groove 77 are formed along the entire lengthwise direction of the second member 75 , that is, from one end side edge to the other end side edge of the second member 75 . ing. The width dimension of the second groove 77 is set to be approximately the same as the width dimension of the region of the twisted wire 2 where the jacket 6 exists. Preferably, the width dimension of the second groove 77 is set to a dimension that allows the portion of the twisted wire 2 where the jacket 6 is present to be press-fitted. This makes it difficult for the twisted wire 2 to fall out of the second groove 77 even when the second groove 77 is oriented vertically downward.

The first member 71 and the second member 75 are united by a uniting mechanism. Here, screw holes 71a and 75a and screws are assumed as such a uniting mechanism. Screw holes 71a and 75a are formed in the first member 71 and the second member 75, respectively. The screw hole 71a formed in the first member 71 is formed in the base end portion of the rod-shaped portion 72 so as to penetrate both side surfaces along the width direction. For example, two screw holes 71 a are formed along the extending direction of the bar-shaped portion 72 . The screw hole 75a formed in the second member 75 is formed so as to penetrate from the inner peripheral surface to the side surface of the first groove 76 along the width direction. Two screw holes 75 a are also formed along the extending direction of the second member 75 . Then, with the first member 71 fitted in the first groove 76 and the positions of the two screw holes 71a and 75a aligned, the first member 71 and the second member 75 are connected by tightening screws into the screw holes 71a and 75a. are united. Further, when the screw is removed, the engagement between the first member 71 and the second member 75 is released, so that they can be attached and detached. Note that the screw hole 75a is formed as an elongated hole here. Thereby, the positions of the first member 71 and the second member 75 can be adjusted. However, the configuration of the uniting mechanism is not limited to the one described above. For example, it may be a fitting structure of a convex portion and a concave portion, or may be a locking mechanism such as a snap lock.

Further, the second member 75 is formed with a positioning hole 75 b for positioning to the support jig mounting portion 16 . The positioning hole 75b is formed in the lower surface of the second member 75. As shown in FIG. The positioning hole 75 b is formed at a position avoiding the second groove 77 along the width direction of the second member 75 . Two positioning holes 75b are provided at intervals along the X direction.

Further, the second member 75 is provided with a lock receiving portion 78 for fixing to the support jig mounting portion 16 . The lock receiving portion 78 is provided on the side surface of the second member 75 . The lock receiving portion 78 is provided between the two positioning holes 75b along the X direction.

<Action>
Next, an example of terminal crimping operation using the terminal crimping device 10 will be described. FIG. 7 is a flowchart of a terminal crimping operation using the terminal crimping device 10. FIG. As shown in FIG. 7, the terminal crimping operation includes a setting process (step S1), a crimping process (step S2), and a removal process (step S3).

<Set process>
The setting process will be described with further reference to FIGS. 8 to 11. FIG. FIG. 8 is a schematic side view showing the terminal crimping device 10 when set. 9, 10 and 11 are diagrams for explaining how the grip portion 36 and the lid 40 are opened. 9, 10 and 11, the terminal holder 30, the grip portion 36, the lid 40 and the opening member 61 are partially extracted and illustrated. 9 is a perspective view and FIG. 10 is a front view. The left half of FIG. 11 is a plan view, and the right half is a cross-sectional view taken along line XI-XI of FIG.

First, the slide base 14 is pulled out. Next, the opening/closing portion 44 is operated to open the grip portion 36 and the lid 40 . Also, the wire support jig 70 is removed from the support jig mounting portion 16 . When the terminal crimping operation is continuously performed, the slide base 14 is pulled out, the grip portion 36 and the lid 40 are opened, and the wire support jig 70 is removed from the support jig mounting portion 16 in the removal step. will be Therefore, these operations do not need to be performed in the setting process after the removing process.

The grasping portion 36 and the lid 40 are opened by operating the receiving portion 43 . That is, the operator rotates the dial 43 with the grip portion 36 and the lid 40 closed. As a result, the opening/closing part 44 presses the opening member 61 in the X direction, the opening member 61 moves in the X direction against the biasing force of the opening member biasing member 62 , and presses the movable gripping piece 37 . The movable gripping piece 37 moves in the Y direction against the biasing force of the gripping portion biasing member 38 to open the gripping portion 36 . As a result, as shown in FIG. 10, a clearance CR is created between the movable gripping piece 37 and the lower supporting portion of the stationary gripping piece 31a in the holder body 31. As shown in FIG. Further, the opening/closing part 44 presses the lid supporting member 41 in the Z direction, and the lid supporting member 41 rotates against the biasing force of the lid biasing member 42 to open the lid 40 .

The terminal 7 is set in the terminal holder 30 with the grip portion 36 and the lid 40 opened. The mating connection portion 9 of each of the first terminal 7A and the second terminal 7B is inserted between the stationary gripping piece 31a and the movable gripping piece 37, and the crimping portion 8 is supported on the lower die 51. As shown in FIG.

After the terminal insertion is completed, the grip portion 36 and the lid 40 are closed. Closing of the grasping portion 36 and the lid 40 is also performed by operating the reception portion 43 . That is, the operator rotates the dial 43 with the grip portion 36 and the lid 40 open. As a result, the state in which the opening/closing portion 44 presses the opening member 61 in the X direction is released, the opening member 61 moves to the retracted position by the biasing force of the opening member biasing member 62, and the pressing state of the movable gripping piece 37 is released. be done. The movable gripping piece 37 is moved in the Y direction by the biasing force of the gripping portion biasing member 38 to close the gripping portion 36 . Further, the state in which the opening/closing portion 44 presses the lid supporting member 41 in the Z direction is released, the lid supporting member 41 is rotated by the biasing force of the lid biasing member 42, and the lid 40 is closed.

Also, the operator sets the wire 3 on the wire support jig 70 that has been removed from the support jig mounting portion 16 . Specifically, in the wire support jig 70, the first member 71 and the second member 75 are in a combined state in advance. In this state, the two wires 3 exposed at the ends of the twisted wires 2 are untwisted and inserted into the respective grooves 73 a of the first member 71 . Also, the intermediate portion (jacket portion) of the twisted wire 2 is inserted into the second groove 77 of the second member 75 . This completes the setting of the wires 3 to the wire support jig 70 .

After completing the setting of the wires 3 on the wire support jig 70 , the wire support jig 70 with the wires 3 set thereon is mounted on the terminal crimping device 10 . Specifically, the projection 17 a projecting from the upper surface of the support jig mounting portion 16 is accommodated in the recess formed in the second member 75 of the wire support jig 70 . As a result, the end portion of the wire 3 is placed on the bottom portion of the crimping portion 8, or positioned slightly above the bottom portion within a range that can be accommodated between the crimping pieces. In this state, the lock portion 18 provided on the support jig mounting portion 16 is locked to the lock receiving portion 78 provided on the second member 75 . This completes the setting of the wire support jig 70 .

After the terminal 7 is set in the terminal holder 30 and the wire support jig 70 in which the wire 3 is set is mounted in the support jig mounting portion 16, the slide base 14 is pushed into the first position. Thus, setting of the terminal 7 and the electric wire 3 to the terminal crimping device 10 is completed. In this state, the crimp portion 8 of the terminal 7 is positioned between the upper die 54 and the lower die 51 and the wire 3 is positioned between the bottom portion of the crimp portion 8 and the upper die 54 . When this state is reached, the operator drives the mold moving section 20 to start the crimping operation.

<Crimp process>
The crimping process will be described with further reference to Figures 12-17. FIG. 12 is a flow chart illustrating the actions that occur during the crimping process. FIG. 13 is a diagram for explaining how the upper mold 54 is in contact with the terminal 7. As shown in FIG. FIG. 14 is a diagram for explaining how the terminal 7 is crimped onto the electric wire 3. FIG. FIG. 15 is a diagram for explaining how the pressing member 63 comes into contact with the opening member 61. As shown in FIG. 16A and 16B are diagrams for explaining how the pressing member 63 presses the opening member 61. FIG. FIG. 17 is a diagram for explaining how the grip portion 36 is opened.

Steps S21 to S25 in FIG. The operator drives the mold moving section 20 by turning on a crimping start switch or the like. At this time, the mold moving unit 20 is configured to drive one reciprocation, that is, one cycle from step S21 to step S25. More specifically, for example, the ram member 22 is stopped near the top dead center, and when the crimping start switch is turned on, it receives the driving force of the drive source 21 and descends toward the bottom dead center. Then, when the ram member 22 reaches the bottom dead center, it rises toward the top dead center. One cycle is completed by reaching near top dead center.

Specifically, when the drive source 21 is driven, the crimping die 50 starts moving closer (step S21). Here, the ram member 22 shifts from the top dead center to the bottom dead center and the upper die 54 approaches the lower die 51 .

As the upper die 54 continues to move closer to the lower die 51, the upper die 54 comes into contact with the terminal 7 as shown in FIG. step S22). At this time, the terminal deformation portion 55 contacts the tip of the crimping portion 8 . As the upper die 54 continues to move closer to the lower die 51 , the tip of the crimping portion 8 starts bending deformation along the terminal deforming portion 55 . Here, the time at which the upper die 54 contacts the terminal 7 is regarded as the starting point of the bending deformation. The terminal 7 is bent and deformed so that the tip of the crimping portion 8 faces the electric wire 3 . In the bending deformation, the terminal 7 usually does not undergo elongation deformation or is slightly deformed.

If the upper die 54 continues to move closer to the lower die 51, the upper die 54 begins to compress and deform the terminal 7 while the ram member 22 is moving from the top dead center to the bottom dead center (step S23). For example, the distance between the upper die 54 and the lower die 51 becomes smaller than the sum of the thicknesses of the terminal 7 and the core wire 4, and the terminal 7 and the core wire 4 are compressed and deformed. In the compressive deformation, the terminal 7 tends to be elongated. When the terminal 7 tries to extend in the X direction, the tip surface of the terminal 7 presses the front positioning portion 33 . The front positioning portion 33 receives this pressing force and moves away from the grip portion 36 against the biasing force of the positioning portion biasing member 34 . This allows the terminals 7 to extend in the longitudinal direction.

When the upper die 54 continues to move closer to the lower die 51, the ram member 22 reaches the bottom dead center, and as shown in FIG. 14, the compression deformation of the terminal 7 is completed (step S24). Pressing of the crimping portion 8 and the wire 3 by the upper mold 54 and the lower mold 51 is completed, and the crimping portion 8 is deformed into a desired shape.

When the compression deformation of the terminal 7 is completed, the crimping die 50 is moved apart (step S25). Here, the ram member 22 shifts from the bottom dead center to the top dead center and the upper die 54 moves away from the lower die 51 . The terminal pressing member 58 presses the terminal 7 to suppress the rising of the terminal-equipped electric wire 1 together with the crimping die 50 . When the ram member 22 reaches the top dead center, the driving of the mold moving section 20 is stopped.

Step S<b>26 in FIG. 12 is a step in which the grip release section 60 releases the grip section 36 . Here, as shown in FIG. 15, the pressing member 63 that has moved closer to the terminal holder 30 along the Z direction together with the upper die 54 presses the opening member 61 . As a result, as shown in FIG. 16, the opening member 61 moves along the X direction against the biasing force of the opening member biasing member 62 and presses the movable gripping piece 37 . As shown in FIG. 17, the movable gripping piece 37 moves in the Y direction against the biasing force of the gripping portion biasing member 38 to open the gripping portion 36 . As a result, as shown in FIG. 17, a clearance CR is created between the movable gripping piece 37 and the lower supporting portion of the stationary gripping piece 31a in the holder body 31. As shown in FIG.

After the upper mold 54 and the lower mold 51 have started relative movement so that the upper mold 54 and the lower mold 51 approach each other, the grip opening part 60 is moved to the position where the first terminal 7A and the second terminal 7B are closed. The gripping portion 36 is released before crimping is completed. That is, step S26 is performed at any stage between steps S21 and S24 in FIG.

The gripping portion 36 may grip the first terminal 7A and the second terminal 7B until the upper die 54 contacts the crimping portion 8 . The grip release portion 60 may release the grip portion 36 after the upper die 54 contacts the crimping portion 8 . That is, step S26 may be performed after step S22 in FIG. This allows the gripping portion 36 to grip the terminal 7 for as long as possible before the terminal 7 starts to stretch and deform.

The grip release portion 60 may release the grip portion 36 before the compressive deformation of the crimping portion 8 begins. The gripping portion 36 may release the gripping of the first terminal 7A and the second terminal 7B before the compression deformation of the crimping portion 8 starts. That is, step S26 may be performed before step S23 in FIG. Accordingly, since the gripping portion 36 releases the gripping of the terminal 7 while the terminal 7 is stretched and deformed, the friction between the terminal 7 and the gripping portion 36 is easily suppressed.

In view of the above, step S26 is performed between steps S22 and S23. Step S26 may be performed between steps S21 and S22, or may be performed between steps S23 and S24. By changing the length of the pressing member 63 with respect to the length of the upper die 54, it is possible to adjust the time point at which step S26 is performed. That is, by increasing the length of the pressing member 63 with respect to the length of the upper mold 54, the pressing member 63 presses the opening member 61 quickly. Thereby, step S26 can be adjusted to be performed between step S21 and step S22. By shortening the length of the pressing member 63 with respect to the length of the upper mold 54, the pressing member 63 presses the opening member 61 slowly. Thereby, step S26 can be adjusted to be performed between step S23 and step S24.

In step S<b>25 , the pressing member 63 is also separated from the terminal holder 30 together with the crimping die 50 . As a result, the state in which the pressing member 63 presses the opening member 61 is eliminated. As a result, the state in which the release member 61 presses the movable gripping piece 37 is released, and the gripping portion 36 returns to the state in which the terminal 7 is gripped.

<Extraction process>
After the crimping process is completed, the take-out process is performed. Specifically, the operator pulls out the slide base 14 to the second position. With the slide base 14 positioned at the second position, the receiving portion 43 is operated to open the grip portion 36 and the lid 40 . After the holding portion 36 and the lid 40 are opened, the wire support jig 70 on which the terminal-equipped wire 1 is set is removed from the support jig mounting portion 16 . By removing the terminal-equipped electric wire 1 from the electric wire support jig 70, the terminal-equipped electric wire 1 as shown in FIG. 1 can be obtained. After the removal process is completed, the process returns to the setting process, and thereafter, by repeating the setting process to the removal process, a plurality of terminal-equipped electric wires 1 can be continuously obtained.

<Effects, etc.>
According to the terminal crimping device 10 configured as described above, the crimping of the first terminal 7A and the second terminal 7B is completed after the relative movement of the upper mold 54 and the lower mold 51 is started so as to approach each other. Since the gripping release portion 60 releases the gripping portion 36 in advance, the gripping of the terminal 7 by the gripping portion 36 is released before the terminal 7 finishes being stretched. As a result, even when the terminal 7 extends in the longitudinal direction during crimping of the terminal, it is possible to suppress friction between the terminal 7 and the grip portion 36 .

Further, the gripping portion 36 grips the first terminal 7A and the second terminal 7B until the upper die 54 contacts the first terminal 7A and the second terminal 7B. Thereby, the positional accuracy of the first terminal 7A and the second terminal 7B with respect to the first electric wire 3A and the second electric wire 3B is further increased.

Moreover, the grip release portion 60 releases the grip portion 36 before the compressive deformation of the first terminal 7A and the second terminal 7B starts. As a result, the gripping portion 36 is released before the first terminal 7A and the second terminal 7B start to stretch, so it becomes easier to suppress rubbing caused by the stretching of the first terminal 7A and the second terminal 7B.

The gripping portion 36 has a movable gripping piece 37 that contacts the terminal 7 and a gripping portion biasing member 38 that biases the movable gripping piece 37 toward the terminal 7. The terminal holder 30 includes an opening member 61 provided on the terminal holder 30 separately from 36. The opening member 61 moves in the first direction to press the movable gripping piece 37, and the movable gripping piece 37 is pressed by the opening member 61. The gripping portion 36 is opened by moving in the second direction against the biasing force of the gripping portion biasing member 38 . Thereby, the grasping portion 36 can be opened by operating the opening member 61 at a location apart from the grasping portion 36 .

Further, the gripping/opening portion 60 includes a pressing member 63 that moves toward and away from the terminal holder 30 by the mold moving portion 20, and the pressing member 63 moves along the third direction to open the opening member. 61 is pressed to move in the first direction. As a result, the force of the mold moving portion 20 is converted into a force for opening the gripping portion 36 via the gripping opening portion 60 . This makes it possible to omit the control of the grip release portion 60 using software.

Further, terminal holder 30 further includes a reception portion 43 that receives an opening/closing operation, and an opening/closing portion 44 that receives the opening/closing operation received by reception portion 43 and moves opening member 61 in the first direction. This makes it easier for the operator to open and close the grip portion 36 .

The terminal holder 30 further includes a lid 40 that presses the terminals 7 in the Z direction, and the opening/closing portion 44 opens and closes the lid 40 together with the grip opening portion 60 in response to the opening/closing operation received by the receiving portion 43 . As a result, the operator can open and close the lid 40 and the grip opening portion 60 with one operation.

[Appendix]
So far, the gripping portion 36 has been described as having the movable gripping piece 37 and the biasing member, but this is not an essential configuration. The movable gripping piece 37 may be cylinder driven. In this case, the terminal crimping device 10 may include a control section for controlling the cylinder. The controller may control the cylinder to release the movable gripping piece 37 at the timing described above. In this case, the cylinder and the control section are the grip release section 60 .

Also, although the grip opening portion 60 has been described as including the opening member 61, this is not an essential configuration. For example, the pressing member 63 may directly press the movable gripping piece 37 .

Further, although the pressing member 63 has been described as moving together with the mold, this is not an essential configuration. The pressing member 63 may be provided so as to move separately from the mold.

Further, although the terminal holder 30 has been described as including the receiving portion 43 and the opening/closing portion 44, this is not an essential configuration. For example, the terminal holder 30 may not include the receiving portion 43 and the opening/closing portion 44 and may be configured such that the operator directly opens the grip portion 36 . Further, even when the terminal holder 30 includes the receiving portion 43 and the opening/closing portion 44 , it is not essential that the receiving portion 43 and the opening/closing portion 44 are interlocked with the lid 40 . For example, the receiving portion 43 and the opening/closing portion 44 for opening and closing the lid 40 may be provided separately from the receiving portion 43 and the opening/closing portion 44 for the opening member 61 .

Note that the configurations described in the above embodiments and modifications can be appropriately combined as long as they do not contradict each other.

REFERENCE SIGNS LIST 1 electric wire with terminal 2 twisted electric wire 3 electric wire 3A first electric wire 3B second electric wire 4 core wire 5 insulation coating 6 jacket 7 terminal 7A first terminal 7B second terminal 8 crimping portion 8a core wire crimping portion 8b coating crimping portion 9 mating connection portion REFERENCE SIGNS LIST 10 terminal crimping device 11 base 12 frame 13 stage 14 slide base 15 holder attachment portion 16 support jig attachment portion 17 support base 17a convex portion 18 lock portion 19 handle 20 mold moving portion 21 drive source 22 ram member 30 terminal holder 31 holder Main body 31a Immovable grip piece 31b Support surface 32a Positioning part accommodation recess 32b Grip part accommodation recess 32c Opening member accommodation recess 33 Front positioning part 34 Positioning part urging member 35 Positioning part holding plate 36 Grip part 37 Movable grip piece 37a Grip block 37b Pressing Receiving portion 37c Guide portion 38 Gripping portion urging member 39 Gripping portion pressing plate 40 Lid 40a Lid base portion 40b Protruding piece 40c Connecting piece 41 Lid supporting member 42 Lid urging member 43 Receiving portion (dial)
44 Opening/closing part 45 Opening member support part 45a Curved surface 45b Plane 46 Lid support part 46a Curved surface 46b Plane 50 Crimping mold 51 Lower mold 51a Lower mold for core wire crimping part 51b Lower mold for coating crimping part 52 Holder mounting part 53 Terminal support Part 54 Upper die 54a Core wire crimping part upper die 54b Coating crimping part upper die 55 Terminal deforming part 58 Terminal pressing member 60 Grip release part 61 Release member 61a Pressing part 61b First pressure receiving part 61c Second pressure receiving part 62 Release Member biasing member 63 Pressing member 70 Wire support jig 71 First member 71a Screw hole 72 Rod-shaped portion 73 Wire support portion 74 Twisted wire support portion 75 Second member 75a Screw hole 75b Positioning hole 76 First groove 77 Second groove 78 Lock receiving part

Claims (7)

A terminal crimping device for simultaneously crimping a first terminal to a first wire and crimping a second terminal to a second wire,
a terminal holder that holds the first terminal and the second terminal in a state of extending in a first direction and aligned in a second direction crossing the first direction;
a lower mold for supporting the first terminal and the second terminal; and a crimping portion of the first terminal and a crimping portion of the second terminal by sandwiching the first terminal and the second terminal between the lower mold. a crimping die for crimping the first terminal and the second terminal held by the terminal holder to the first electric wire and the second electric wire;
a mold moving unit that relatively moves the upper mold and the lower mold so as to approach and separate from each other along a third direction that intersects the first direction and the second direction;
with
The terminal holder includes a front positioning portion that covers the first terminal and the second terminal from the front along the first direction, and a front positioning portion that is movable in a direction intersecting the first direction to move the first terminal and the second terminal. and a gripping portion that grips each of the terminals,
After the upper mold and the lower mold start to move relative to each other, and before the upper mold and the lower mold come closest to each other and the crimping of the first terminal and the second terminal is completed. A terminal crimping device provided with a grip release portion for opening the grip portion. The terminal crimping device according to claim 1,
The terminal crimping device, wherein the gripping portion grips the first terminal and the second terminal until the upper die contacts the crimping portion. The terminal crimping device according to claim 1 or 2,
The terminal crimping device, wherein the grip releasing portion releases the gripping portion before compression deformation of the crimping portion starts. The terminal crimping device according to any one of claims 1 to 3,
The gripping portion has a movable gripping piece that contacts the first terminal and the second terminal, and a biasing member that biases the movable gripping piece toward the first terminal and the second terminal,
The gripping opening includes an opening member provided on the terminal holder separately from the gripping portion,
the opening member moves in the first direction to press the movable gripping piece;
The terminal crimping device, wherein the movable gripping piece is pressed by the opening member and moves in the second direction against the biasing force of the biasing member to open the gripping portion. The terminal crimping device according to claim 4,
the grip release portion includes a pressing member that is moved relatively to and away from the terminal holder by the mold moving portion;
The terminal crimping device, wherein the pressing member moves along the third direction to press the opening member to move it in the first direction. The terminal crimping device according to claim 4 or 5,
The terminal crimping device, wherein the terminal holder further includes a receiving portion that receives an opening/closing operation, and an opening/closing portion that receives the opening/closing operation received by the receiving portion and moves the opening member in the first direction. The terminal crimping device according to claim 6,
The terminal holder further includes a lid that presses the first terminal and the second terminal from the third direction,
The opening/closing portion receives the opening/closing operation received by the receiving portion, and opens/closes the lid together with the grip opening portion.

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