JP2014187012A - Terminal manufacturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a terminal manufacturing device capable of manufacturing a crimp terminal which can improve welding quality.SOLUTION: Disclosed is a terminal manufacturing device 1 in which conductor portions of covered conductors are housed to manufacture a crimp terminal ST having a crimpable press bond part Ta. The device includes a positioning jig 2 which holds the press bond part Ta for positioning and fixing when a plate-shaped body is bending-processed into a cylinder and puts the bending-processed cylinder in a tightly closed state to form the press bond part Ta. The positioning jig 2 has gas passages 6a, 6b for discharging microscopic molten metal (spatter) scattering when the press bond part Ta is irradiated with laser beams and laser-welded from the inside of the positioning jig 2 to the outside.

Description

  The present invention relates to a terminal manufacturing apparatus for a crimp terminal that is crimped to an end of an electric wire used for, for example, a wire harness.

  Wire harnesses are frequently used for in-car wiring of automobiles. The wire harness is a collective part of a plurality of covered electric wires according to the specifications of in-vehicle wiring. A terminal for connection (hereinafter referred to as a crimp terminal) is crimped to the end of each covered electric wire.

  When this crimp terminal is connected to the wire end of the wire harness, the insulation coating layer of the wire end is removed to expose the core wire, and the core wire barrel of the crimp terminal is crimped and crimped to the exposed portion of the core wire. Electrical connection with the terminal is made.

  And the connection part of a crimp terminal and an electric wire terminal is resin-sealed in order to prevent the corrosion of the core wire by the penetration | invasion of the water | moisture content from the connection part with a crimp terminal in the electric wire (for example, patent document 1 and patent document 2) reference).

Japanese Patent Laid-Open No. 2001-167821 JP2012-0669449

  By the way, in the said patent document 1 and patent document 2, since the connection part of an electric wire terminal and a crimp terminal is resin-sealed, it becomes a factor which increases the manufacturing unit price of a wire harness. This is because the resin itself used is expensive, and it takes time for the resin to be poured or cured in the resin molding process or the coating process.

  Therefore, the wire connection portion of the crimp terminal (hereinafter referred to as the crimp portion) is bent into a cylindrical shape by press molding, and the butt interface between both ends of the plate material and the tip sealing portion formed in the cylindrical bent portion are overlapped. Attempts have been made to join the parts by laser welding to make the wire connection part a sealed structure.

  Here, there may be a gap at the butt interface between both ends of the plate material that can be bent into a cylindrical shape, so that the butt interface is brought into contact by fixing the crimp terminal with a holding jig. Attempts have been made to laser weld the entire butt interface by irradiating a laser beam from a through hole formed in the holding jig.

  However, when laser welding is performed by irradiating the butt interface with laser light, a minute molten metal scattered from the butt interface adheres to the holding jig or the like and contaminates the holding jig. In a long-term mass production process, there is a possibility that the through-hole for passing the laser beam is blocked and the bonding quality at the butt interface is deteriorated.

  Then, the subject which this invention tends to solve is providing the terminal manufacturing apparatus of the crimp terminal which can suppress the fall of welding quality.

  In order to achieve the above object, the terminal manufacturing apparatus of the present invention described in claim 1 of the present invention is a terminal manufacturing apparatus that manufactures a crimp terminal having a crimp part that accommodates a conductor part of a covered electric wire and can be crimped. When the plate-like body is bent into a cylindrical body and the bent cylindrical body is hermetically sealed to form the crimping portion, a positioning jig is provided for positioning and fixing by sandwiching the crimping portion. The tool is characterized in that it has a gas flow path for discharging a minute molten metal scattered when the crimping part is irradiated with laser light and laser welding from the inside of the positioning jig to the outside.

  According to the terminal manufacturing apparatus of the present invention as set forth in claim 1, the minute molten metal scattered when laser welding the crimping portion positioned and fixed by the positioning jig is transferred from the inside of the positioning jig to the outside by the gas flow path. Discharge. For this reason, for example, it is possible to prevent a through-hole through which a laser beam irradiated when laser welding is formed, which is formed on the positioning jig, is blocked by a minute molten metal. Accordingly, it is possible to suppress a decrease in the bonding quality of the crimping part.

  In the terminal manufacturing apparatus of the present invention described in claim 2, the positioning jig has a through hole through which a laser beam passes, and gas introduced into the gas flow path is discharged from the through hole. Features.

  According to the terminal manufacturing apparatus of the present invention described in claim 2, the gas introduced into the gas flow path is discharged from the through hole through which the laser beam passes. For this reason, by forming the discharge port for discharging gas in addition, the force for fixing the crimping portion is not weakened, and stable positioning performance of the crimping portion can be ensured.

  In the terminal manufacturing apparatus according to a third aspect of the present invention, the through hole is formed with an inclined portion that gradually opens from the inside of the positioning jig toward the outside, and the gas is formed in the inclined portion. A discharge hole for discharging the gas introduced from the flow path is formed.

  According to the terminal manufacturing apparatus of the present invention as set forth in claim 3, since the discharge hole for discharging the gas introduced from the gas flow path is formed in the inclined portion formed in the through hole, laser welding is performed. At this time, the minute molten metal scattered at the time can be easily discharged from the inside of the positioning jig to the outside, and adhesion and deposition of the minute molten metal can be prevented.

  According to a fourth aspect of the present invention, there is provided the terminal manufacturing apparatus of the present invention, further comprising a push-pull type ventilation means that combines a push hood that blows a gas flow and a pull hood that sucks the gas flow. The gas introduced from the gas flow path is provided at a predetermined height position from the positioning jig, and is sucked.

  The terminal manufacturing apparatus of the present invention described in claim 4 scatters when laser welding is performed because the gas introduced from the gas flow path is sucked by the push hood for blowing the gas flow and the pull hood for sucking the gas flow. It is possible to prevent adhesion and deposition of minute molten metal.

  In order to achieve the above object, the terminal manufacturing apparatus of the present invention described in claim 5 of the present invention is a terminal manufacturing apparatus that manufactures a crimp terminal having a crimping portion that accommodates a conductor portion of a covered electric wire and can be crimped. And bending the plate-like body into a cylindrical body, and forming the crimp portion by sealing the bent tubular body, and a positioning jig for positioning and fixing by sandwiching the crimp portion, and the positioning A push-pull type ventilation means that is arranged above the jig and that combines a push hood that blows out a gas flow and a pull hood that sucks the gas flow, and the push-pull type ventilation means has a laser beam on the crimping portion. It is characterized by sucking a minute molten metal that is scattered when laser welding is performed.

  According to the terminal manufacturing apparatus of the present invention as set forth in claim 5, the fine molten metal that is scattered when laser welding is performed on the crimping portion positioned and fixed by the positioning jig is negatively pressured by the gas flow generated by the push hood and the pull hood. Since suction is performed, it is possible to prevent adhesion and deposition of minute molten metal that is scattered when laser welding is performed.

  Thus, according to this invention, the terminal manufacturing apparatus of the crimp terminal which can suppress the fall of welding quality can be provided.

It is a figure which shows the whole structure of the terminal manufacturing apparatus which concerns on embodiment of this invention. It is a schematic diagram which shows the whole structure of the process including the terminal manufacturing apparatus which concerns on embodiment of this invention. It is a schematic diagram which shows the manufacturing process of the chain terminal containing the crimp terminal manufactured by the terminal manufacturing apparatus which concerns on embodiment of this invention. It is a perspective view which shows the external appearance structure of the crimp terminal which concerns on embodiment of this invention. It is the figure which showed typically the through-hole of the positioning jig which concerns on embodiment of this invention. It is a figure which shows the case where the modification of the positioning jig in FIG.1 (c) is used.

  Hereinafter, a terminal manufacturing apparatus according to an embodiment of the present invention will be described with reference to the drawings. First, an outline of a terminal manufacturing apparatus according to an embodiment of the present invention will be described with reference to FIG.

  1 is a plan view showing the overall configuration of the terminal manufacturing apparatus 1. FIG. 1 (a) is a top view of the terminal manufacturing apparatus, FIG. 1 (b) is a cross-sectional view of the terminal manufacturing apparatus, and FIG. (C) is a side view of a terminal manufacturing apparatus.

  Hereinafter, in an embodiment of the present invention, a crimping terminal having a crimping part that accommodates a conductor part of a covered electric wire and can be crimped, and the crimping terminal obtained by bending the crimping part into a cylindrical shape by press molding is performed by a terminal manufacturing apparatus. The case of manufacturing will be described.

(1) Schematic Configuration As shown in FIG. 1, the terminal manufacturing apparatus 1 includes a crimp terminal having a crimp part Ta that can accommodate and crimp a conductor part of a coated conductor and a connector part Tb that is connected to another terminal. It is an apparatus that bears part of the manufacturing process. As will be described later, the terminal manufacturing apparatus 1 includes a positioning jig 2 that positions and fixes the crimping portion Ta when the plate-like body is folded into a hollow shape.

(2) Example of process as a premise Here, as a premise for explaining the configuration of the terminal manufacturing apparatus 1, the entire structure of the terminal manufacturing process including the terminal manufacturing apparatus 1 as one process is crimped by the terminal manufacturing apparatus 1. Examples of terminals will be described with reference to FIGS.

  FIG. 2 is a diagram showing the overall configuration of the terminal manufacturing process. FIG. 3A to FIG. 3D are diagrams showing a manufacturing process of a crimp terminal. FIG. 4 is a view showing a crimp terminal manufactured by a terminal manufacturing apparatus.

  In this process, from the upstream side in the feed direction on the left side of the figure, the unwinding roll 10, the press machine 20, the laser welding machine 30, the laser workability inspection machine 40, and the winding roll 50 are controlled. And a control device 60. That is, in this process, press molding and laser welding are performed as a series of processes.

  From the above, in this process, the laser workability inspection machine 40 is not an essential configuration. In this process, an example in which the press machine 20 and the laser welder 30 are provided separately is shown. However, in the present invention, these are integrated, that is, the laser welder 30 is incorporated in the press machine 20. The embodiment which includes is also included. Furthermore, for convenience of explanation, an example is shown in which the laser welder 30 and the laser workability inspection machine 40 are configured as separate devices, but the function of the laser workability inspection machine 40 is included in the laser welder 30. Incorporating embodiments are also included.

  Hereafter, each structure which makes this process is demonstrated. The unwinding roll 10 is a mechanism that unwinds and supplies the copper strip CS, which is a workpiece to be processed, wound in a roll shape at a predetermined speed. The unwinding roll 10 continuously feeds the copper strip CS from the roll at a speed mainly considering the press processing timing in the press machine 20.

  In this step, a plate material made of a copper alloy is used as the copper strip CS. Of course, the material of the workpiece is not limited to a copper alloy, and for example, an aluminum-based material may be used as the workpiece. In this step, the plate thickness of the workpiece is 0.25 mm or 0.32 mm, but it goes without saying that the plate thickness is not limited to these.

  As will be described later, in the press machine 20, the copper strip CS is intermittently conveyed in accordance with the timing of the press work. Therefore, as shown in FIG. 2, between the unwinding roll 10 and the press machine 20, the copper strip CS is given a certain slack to absorb the difference in the conveyance timing between the intermittent conveyance and the continuous conveyance. ing.

  The press machine 20 is a device that forms a chain terminal T by performing press molding such as punching or bending while intermittently transporting the copper strip CS supplied from the unwinding roll 10 by a feed mechanism (not shown). .

  Specifically, as shown in FIG. 3, the copper strip CS unrolled from the roll shape (FIG. 3A) is subjected to punching as a primary press to obtain FIG. 3B. The chain terminal T1 shown is formed. The chain terminal T1 is formed with carrier portions C1 and C2 for conveying the chain terminal T1 in the feed direction in the press machine 20 up and down. In addition, the guide G is provided with a plurality of feed holes H (in this case, one at a time corresponding to the position of the chain terminal T) at a predetermined pitch L in order to perform positioning at the time of conveyance.

  Between the carrier parts C1 and C2, there is a part that forms a cylindrical crimp part Ta of the individual crimp terminal ST and a box-shaped connector part Tb that is a connection part with other terminals in a subsequent process. Is formed. In addition, the male and female of the connector part Tb used as this connection part are not ask | required.

  In FIG. 3C, the chain terminal T2 shown in FIG. 3C is formed by bending as a secondary press. In this chain terminal T2, the carrier part C2 is removed, and only the carrier part C1 is provided. Moreover, as shown in FIG. 4, the crimping | compression-bonding part Ta and the connector part Tb will be in the state formed in the cylinder shape and the box shape, respectively, as shown in FIG.

  In this state, the crimping portion Ta is a butt interface Td that can be formed by bending one end and the other end of the plate-like body into a hollow shape, or one end and the other end. An overlapping interface Td ′ is formed by overlapping the portions.

  The laser welding machine 30 is a device that joins the butt interface Td and the overlapping interface Td 'formed in the bent portion of the chain terminal T by laser welding to make the electric wire connection part a sealed structure. Specifically, as shown in the perspective view of FIG. 4, the butt interface Td formed in the axial direction and the overlap are formed at the upper end portion of the crimp portion Ta that is bent into a cylindrical shape in the crimp terminal ST. The mating interface Td ′ is laser welded.

  Further, the connecting portion of the crimping portion Ta with the connector portion Tb is crushed to form the connecting portion Tc, and the connecting portion Tc is laser welded to suppress the intrusion of water into the conductor portion. A sealing portion Te is formed. At this time, approximately the middle in the longitudinal direction of the overlapping interface is welded in the terminal width direction.

  Note that, here, an example in which the bent portions of the chain terminals T are abutted is used. However, in the present embodiment, even when the bent portions are overlapped, they can be joined by laser welding. Is possible. Further, in the following embodiments, laser welding is performed on the butt interface Td and the sealing portion Te of the connection portion Tc that can be formed into a hollow portion by joining one end portion and the other end portion of the plate-like body. The case where it does is demonstrated.

  Fiber laser welding is used for laser welding of the laser welding machine 30. Since the fiber laser has excellent beam quality and high condensing property, it is possible to realize laser welding having a higher energy density in the processing region than a conventional laser. For this reason, it is possible to process the material at high speed, and it is possible to perform deep penetration welding with a low aspect ratio and high aspect ratio, so that the butt interface Td is appropriately set while suppressing the strength reduction and deformation of the crimped portion Ta. Can be sealed.

  The fiber laser may be irradiated by continuous oscillation, pulse oscillation, QCW oscillation, or pulse-controlled continuous oscillation. The fiber laser may be a single mode or multimode fiber laser.

  In the present invention, a laser beam such as a YAG laser, a semiconductor laser, a disk laser, or an electron beam may be used instead of the fiber laser welding.

  The laser workability inspection machine 40 is an apparatus for inspecting the workability of the chain terminal T that is laser-welded. Specifically, with respect to the welding condition at the butt interface Td laser-welded by the laser welder 30, it is determined by an imaging means such as a CCD camera whether the displacement amount in the axial direction of the welding position and the bead width are within an allowable range. To do.

  The winding roll 50 is a mechanism that winds the chain terminal T at the same speed as the unwinding roll 10. In the winding roll 50 as well as the unwinding roll 10, in the laser welding machine 30 or the laser workability inspection machine 40 in the previous process, the chain terminal T is intermittently synchronized with the timing of laser processing or inspection processing. As shown in FIG. 1, the chain terminal T has a certain slack between the winding roll 50 and the laser workability inspection machine 40, and as shown in FIG. 1, the conveyance timing between intermittent conveyance and continuous conveyance. To absorb the differences.

  Note that, as described above, for convenience of explanation, an example in which the laser welding machine 30 and the laser workability inspection machine 40 are separately configured as separate apparatuses is shown. It is also possible to incorporate the function of the machine 40.

  The control device 60 is mainly for controlling the operation of the laser welding machine 30 in order to perform press molding in the press machine 20 and laser processing in the laser welding machine 30 as a series of steps.

(3) Specific Configuration of Terminal Manufacturing Apparatus Next, a specific configuration of the terminal manufacturing apparatus will be described. The terminal manufacturing apparatus 1 will be described with reference to FIG. 1 and FIG. 5 as a specific configuration as follows, assuming that it bears one function of the laser welding process in the laser welding machine 30 of this process as described above. FIG. 5A is a diagram schematically showing the discharge hole of the through hole of the positioning jig. FIG. 5B is a diagram schematically showing the gas flow path and the discharge hole.

  That is, returning to FIG. 1, the positioning jig 2 includes an upper clamp 3 and a lower clamp 4. The upper clamp 3 and the lower clamp 4 are formed in a semicircular shape so that they can be sandwiched over the entire circumference of the crimping portion Ta. Is inserted.

  Further, the upper clamp 3 and the lower clamp 4 move away from each other by moving in the vertical direction and separating from each other. The inner wall of the upper clamp 3 and the lower clamp 4 is coated with a spatter adhesion preventing agent that prevents adhesion of minute molten metal (spatter) that is scattered when laser welding is performed.

  That is, the upper clamp 3 and the lower clamp 4 are moved up and down between a position where the crimp terminal ST shown in FIG. 1C is sandwiched and a retracted position shown in FIG. To do. The vertical drive of the upper clamp 3 and the lower clamp 4 can be performed by rotating the motor by a cam mechanism (not shown) or by direct drive by a solenoid.

  As shown in FIG. 1B, the upper clamp 3 has an L-shape when viewed from the side, and has an elongate depth portion 3 a in the axial direction of the crimp terminal ST abutting on the upper surface portion of the crimp terminal ST and the chain terminal T. A vertical portion 3b that abuts the upper surface of the carrier portion C1 is provided, and is configured to be movable in the vertical direction.

  In addition, the irradiation region of the laser beam irradiated from the laser welding machine 30 extends over the crimping portion Ta axial direction of the crimping terminal ST and the sealing portion Te of the connection portion Tc. Therefore, as shown in FIG. 1A, the upper clamp 3 is provided with a through hole 3c corresponding to the irradiation region in order to secure an irradiation optical path of this laser beam.

  The laser light passes through the through-hole 3c when the laser welding is performed, and gas introduced into the gas flow path 6 described later is discharged. Further, as shown in FIG. 5A, the gas introduced from the gas flow path 6 and the inclined portion 3d that gradually widens from the inside of the upper clamp 3 to the outside are discharged into the through hole 3c. A discharge hole 3e is formed. The inner wall of the through-hole 3c is coated with a spatter adhesion preventing agent that prevents adhesion of minute molten metal (spatter) that scatters during laser welding.

  The lower clamp 4 is a vertically long bar having a length substantially equal to the axial length of the crimp terminal ST, and is configured to be movable in the vertical direction. The lower clamp 4 moves in the vertical direction through a passage hole formed in the guide G and corresponding to the crimping portion Ta.

  The pin positioning mechanism 5 is provided on a pilot pin 5a provided on the bottom surface side of the vertical portion 3b that forms the end of the upper clamp 3 and a position provided on the guide G so as to coincide with the pilot pin 5a in the vertical direction. Positioning hole 5b. The position of the crimp terminal ST where the feed hole H provided in the carrier portion C1 of the chain terminal T is located on the positioning hole 5b is designed to be a position where the crimp terminal ST reaches the welding position.

  Further, when the butt interface Td in the crimping part Ta is laser welded to the upper clamp 3 of the positioning jig 2, the connection part Tc formed at the connection part with the connector part Tb in the crimping part Ta is also laser-welded. When welding, the gas flow path 6 (6a, 6b) which injects gas toward the butt | matching interface Td and the connection part Tc is provided.

  A gas injector (not shown) is connected to the gas flow path 6 via a nozzle or the like, and jets gas to the gas flow path 6. Here, this gas is a gas for discharging a minute molten metal (sputter) that is scattered when laser welding is performed on the butt interface Td and the connection portion Tc to be laser welded. Preferably, an inert gas is used. Use.

  In addition, as shown in FIGS. 5A and 5B, the gas flow path 6 can introduce gas from the lateral direction in the drawing to the crimp terminal ST and discharge the gas from the upper direction in the drawing. It has a generally square shape. The introduced gas passes through the inside of the upper clamp 3 and is discharged from the through hole 3c of the upper clamp 3 to the outside.

  The through hole 3c has an inclined portion 3d that is gradually widened from the inside of the upper clamp 3 toward the outside. A plurality of discharge holes 3e are formed in the inclined portion 3d, and the gas introduced from the discharge holes 3e is discharged.

  That is, the gas flow path 6 is divided into a plurality of branches in the vicinity of the through hole 3c, and discharge holes 3e formed in the plurality of branches are formed. The gas introduced into the gas flow path 6 from the side of the upper clamp 3 is divided into a plurality of branches along the gas flow path 6, and is discharged from the discharge holes 3e through the plurality of branches.

  A push-pull type ventilation device 10 is provided at a predetermined height position from the upper clamp 3. This push-pull type ventilator 10 is configured by combining a push hood 11 that blows a gas flow and a pull hood 12 that sucks the gas flow.

  This push-pull type ventilator 10 generates an air flow from the push hood 11 toward the pull hood 12. For this reason, the minute molten metal (sputter) scattered inside the positioning jig 2 during laser welding is absorbed by the pull hood 12 by the airflow flowing from the push hood 11 when discharged from the discharge hole 3e.

  The push-pull type ventilator 10 is desirably provided at a height where the kinetic energy of the minute molten metal (sputter) discharged from the discharge hole 3e is lost. By providing at this height position, the fine molten metal can be reliably captured and absorbed by the pull hood 12.

(4) Operational Effect The terminal manufacturing apparatus 1 according to the embodiment of the present invention as described above is a terminal manufacturing apparatus 1 that manufactures a crimp terminal ST having a crimp part Ta that accommodates a conductor part of a covered electric wire and can be crimped. The plate-shaped body is bent into a cylindrical body, and the bending-processed cylindrical body is hermetically sealed to form the crimping portion Ta, and includes a positioning jig 2 for positioning and fixing by sandwiching the crimping portion Ta, The positioning jig 2 is a gas flow path 6a, 6b for discharging a minute molten metal (sputter) scattered from the inside of the positioning jig 2 to the outside when the crimping portion Ta is irradiated with laser light and laser-welded. Have

  Further, in the terminal manufacturing apparatus 1 according to the embodiment of the present invention, the positioning jig 2 has a through hole 3c through which a laser beam passes, and gas introduced into the gas flow paths 6a and 6b is discharged from the through hole 3c. Is done.

  Furthermore, in the terminal manufacturing apparatus 1 according to the embodiment of the present invention, the through hole is formed with an inclined portion 3d that gradually widens from the inside of the positioning jig 2 to the outside, and the inclined portion 3d has a gas. A discharge hole 3e through which gas introduced from the flow paths 6a and 6b is discharged is formed.

  The terminal manufacturing apparatus 1 according to the embodiment of the present invention further includes a push-pull type ventilation means (push-pull type ventilation apparatus) 10 that combines a push hood 11 that blows a gas flow and a pull hood 12 that sucks the gas flow. The push-pull type ventilation means 10 is provided at a predetermined height position (position where the kinetic energy is lost) from the positioning jig 2 and sucks the gas introduced from the gas flow paths 6a and 6b.

  The push hood 11 and the pull hood 12 are arranged above the positioning jig 2 as shown in FIG. At this time, it is preferable that the push hood 11 and the pull hood 12 are disposed in the lateral direction, and the flow direction of the gas flow from the push hood 11 to the pull hood 12 is substantially horizontal. As a result, the space above the positioning jig 2 can be secured wider than when the push hood and the pull hood are arranged in the vertical direction or the diagonal direction, and the degree of freedom of the movable range in the vertical direction of the upper clamp 3 can be secured. Can be increased. In addition, space saving of the terminal manufacturing apparatus 1 can be realized.

  In this embodiment, the push-pull type ventilation means 10 is applied to the positioning jig 2 provided with the gas flow paths 6a and 6b, but not limited to this, as shown in FIG. You may apply to positioning jig 2 'which is not provided. In this case, when the crimping portion Ta positioned and fixed by the positioning jig 2 ′ is laser-welded by the fiber laser FL, the minute molten metal M scattered upward from the through hole 3 c flows from the push hood 11 to the pull hood 12. Negative pressure is sucked by F.

  According to the terminal manufacturing apparatus 1 according to the embodiment of the present invention, the minute molten metal (sputter) scattered when laser welding the crimping portion Ta positioned and fixed by the positioning jig 2 is positioned by the gas flow paths 6a and 6b. The jig 2 is discharged from the inside to the outside. For this reason, it can prevent that the through-hole 3c through which the laser beam irradiated when performing laser welding formed in the positioning jig 2 passes is blocked by the minute molten metal. Accordingly, it is possible to suppress a decrease in the bonding quality of the crimping portion Ta.

  Moreover, according to the terminal manufacturing apparatus 1 of this invention, the gas introduce | transduced into gas flow path 6a, 6b is discharged | emitted from the through-hole 3c through which a laser beam passes. For this reason, by forming a discharge port for discharging gas in addition, the force for fixing the crimping portion Ta is not weakened, and stable positioning performance of the crimping portion Ta can be ensured.

  Furthermore, according to the terminal manufacturing apparatus 1 of the present invention, the discharge hole 3e through which the gas introduced from the gas flow paths 6a and 6b is discharged is formed in the inclined portion 3d formed in the through hole 3c. The minute molten metal (sputter) that is scattered during welding can be easily discharged from the inside of the positioning jig 2 to the outside, and adhesion and deposition of the minute molten metal can be prevented.

  Further, the terminal manufacturing apparatus 1 of the present invention sucks in gas introduced from the gas flow paths 6a and 6b by the push hood 11 that blows out the gas flow and the pull hood 12 that sucks the gas flow. It is possible to prevent adhesion and deposition of minute molten metal (sputter) scattered on the surface.

  And since the terminal manufacturing apparatus 1 which concerns on embodiment of this invention pinches the crimp terminal Ta with the positioning jig 2, and welds the butt | matching interface Td, the clearance gap produced in the butt | matching interface Td is eliminated, and the butt | matching interface by laser welding is removed. Bonding quality can be improved.

  Further, since the gap generated at the butt interface Td by the positioning jig 2 is eliminated, the butt interface Td can be welded without being limited by the accuracy of the press working.

  Further, since the concave portion is formed in the upper clamp 3 and the lower clamp 4 that sandwich the crimping portion Ta so that the crimping portion Ta is sandwiched over the entire circumference, a gap is generated at the butt interface Td of the crimping portion Ta. Even when the butt interface Td is pressed, the butt interface Td is forcibly pressed and the gap is eliminated.

  Moreover, since the through-hole 3c is formed in the upper clamp 3 in the joining direction of the butt interface Td, the positioning jig 2 does not get in the way when irradiating the butt interface Td with laser light.

  Furthermore, since the crimping portion Ta is pressed down by the upper clamp 3 and the lower clamp 4, the sloke for moving the clamp jig is shortened, and the laser processing time including the step of pressing the butt interface Td can be increased.

  In addition, since the upper clamp 3 and the lower clamp 4 hold down the crimping portion Ta to force the butt interface Td into pressure contact, the chain terminal T2 is directed upward or downward with respect to the carrier portion C1 during press molding or the like. Even when bent, the bending can be corrected by pressing the crimping portion Ta, and the chain terminal T2 can be kept horizontal with respect to the carrier portion C1.

  Further, when the lower clamp 4 is detached from the crimping portion Ta, the guide G becomes a barrier against the continuous terminal T2. That is, when the lower clamp 4 is detached from the crimping portion Ta, the connector portion Tb and the crimping portion Ta are engaged with the guide G and the pulling force by the lower clamp 4 is suppressed, so that the lower clamp 4 is easily detached from the crimping portion Ta.

  Thus, according to the positioning jig 2 of the terminal manufacturing apparatus 1 according to the embodiment of the present invention, the bending of the chain terminal T2 with respect to the carrier part C1 is corrected while eliminating the gap generated at the butt interface Td. Can do. In addition, when detaching from the crimping portion Ta, the detachment from the crimping portion Ta can be facilitated.

  As mentioned above, although the terminal manufacturing apparatus of this invention was demonstrated based on embodiment of illustration, this invention is not limited to this, The structure of each part is replaced with the thing of the arbitrary structures which have the same function. Can do.

DESCRIPTION OF SYMBOLS 1 Terminal manufacturing apparatus 2 Positioning jig 3 Upper clamp 3a Depth part 3b Vertical part 3c Through-hole 4 Lower clamp 5 Pin positioning mechanism 5a Pilot pin 5b Positioning hole 6, 6a Gas flow path 10 Unwinding roll 20 Press machine 30 Laser welding machine 40 Laser workability inspection machine 50 Winding roll 60 Control device C1, C2 Carrier part CS Copper strip G Guide H Feed hole ST Crimp terminal ST Crimp terminal T, T1, T2, T3 Chain terminal Ta Crimp part Tb Connector part Tc Connection part Td Butt interface Td 'Overlapping part Te Sealing part

Claims (5)

A terminal manufacturing apparatus for manufacturing a crimp terminal having a crimp part capable of crimping by accommodating a conductor portion of a covered electric wire,
Bending a plate-like body into a cylindrical body, and forming the crimped portion in a sealed state with the bent cylindrical body, provided with a positioning jig for positioning and fixing by sandwiching the crimped portion,
The positioning jig has a gas flow path for discharging from the inside of the positioning jig to the outside the minute molten metal that is scattered when the crimping portion is irradiated with laser light and laser-welded. Terminal manufacturing equipment. The positioning jig has a through hole through which a laser beam passes,
The terminal manufacturing apparatus according to claim 1, wherein the gas introduced into the gas flow path is discharged from the through hole. In the through hole, an inclined portion that is gradually opened from the inside of the positioning jig toward the outside is formed,
The terminal manufacturing apparatus according to claim 2, wherein a discharge hole for discharging a gas introduced from the gas flow path is formed in the inclined portion. A push-pull type ventilation means that combines a push hood that blows out a gas flow and a pull hood that sucks the gas flow;
The push-pull type ventilation means is provided at a predetermined height position from the positioning jig, and sucks in gas introduced from the gas flow path. The terminal manufacturing apparatus according to item. A terminal manufacturing apparatus for manufacturing a crimp terminal having a crimp part capable of crimping by accommodating a conductor portion of a covered electric wire,
A bending jig for bending a plate-like body into a cylindrical body, and forming the pressure-bonding portion in a state where the bent cylindrical body is hermetically sealed;
A push-pull type ventilation means that is arranged above the positioning jig and combines a push hood that blows out a gas flow and a pull hood that sucks the gas flow;
The push-pull type ventilation means sucks minute molten metal that scatters when the crimping portion is irradiated with laser light and laser-welded.

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