CN102544846A - Terminal insertion device and terminal insertion method - Google Patents

Abstract

Even if the position of the crimping portion of the core wire of the terminal on each terminal is shifted up and down with respect to the wire center of the live wire terminal, the terminal can be smoothly and reliably inserted into the connector housing. A terminal insertion device (1) is adopted, which includes: a pair of left and right terminal buckles (2) for inserting a terminal with an inwardly facing protruding portion (3) for terminal support; ) of the crimping part (4a) of the core wire is pushed against the terminal pressing member (5) on the protruding part (3); a measuring mechanism (17) for measuring the height of the crimping part of the core wire relative to the center of the electric wire (21) ); According to the measurement result, the terminal buckle and the terminal pressing member are lifted up and down integrally to adjust the guide (9) and the motor (10) up and down to correct the inclination of the terminal in the up and down direction. The measuring mechanism (17) measures the height of the core wire crimping portion (4a) relative to the center of the electric wire in a state where the terminal pressing member (5) presses the core wire crimping portion (4a) against the protruding portion (3) from above.

Description

Terminal insertion device and terminal insertion method

technical field

The invention relates to a terminal insertion device and a terminal insertion method for holding a terminal with electric wires by a chuck and inserting the terminal into a connector housing.

Background technique

Conventionally, various terminal insertion devices and terminal insertion methods have been proposed in order to insert live wire terminals into insulating connector housings.

For example, in Patent Document 1, it is described that using a pair of terminal guide claws having an inclined guide surface, in order to align the live wire terminal held by the chuck claws with the center of the guide surface, keep the terminal inclined, or adjust the The height of the insertion head including the chuck jaws (not shown).

In addition, in Patent Document 2, it is described that the live wire terminal is clamped from the left and right directions by chuck claws having an L-shaped lower end portion, and a terminal holding plate is inserted between the L-shaped lower end portions of the chuck claws. Clamp and position the live wire terminal up and down (not shown).

In addition, Patent Document 3 describes that in order to smoothly insert the live wire female terminal into the hole of the sealing member, the female terminal is pressed against the electric wire in a state where the center of the quadrangular electrical contact portion of the female terminal is aligned with the center of the electric wire. connection.

prior art literature

Patent Document 1: Japanese Patent Application Laid-Open No. 9-45453

Patent Document 2: Japanese Patent Laid-Open No. 2001-176635

Patent Document 3: Japanese Patent Laid-Open No. 2000-82531

Figure 2 (a), (b) shows that the terminal guide claws are not used, and the same terminal buckle 51 and wire buckle 52 hold different types of live wire terminals 4 ₁ , 4 ₂ and insert them into the connector housing. example. The terminal buckle 51 has a horizontal protruding portion 53 for supporting the core wire crimping portion 4a of each terminal at the lower end.

_The center _of the core wire crimping portion 4a of the terminal ₄₁ of FIG. The center m of 21 ₂ agrees. The height of the protruding portion 53 of the terminal buckle ₅₁ shown in FIG. ₂₁₁ is held at a higher position by the wire buckle 52; compared to the core wire crimping portion 4a of the terminal ₄₂ in FIG. 2(b), the wire ₂₁₂ is held at a lower position by the wire buckle 52.

Accordingly, the terminal ₄₁ in FIG. 2(a) tends to incline forward and downward, and the terminal ₄₂ in FIG. 2(b) tends to incline forward and upward. Due to the change in shape of the terminals 4 ₁ , 4 ₂ , the front end 4 b of each terminal 4 ₁ , 4 ₂ interferes with the upper and lower ends of the opening of the terminal accommodation chamber of the connector housing, making it impossible to smoothly insert each terminal.

Contents of the invention

In view of the above-mentioned problems, an object of the present invention is to provide a terminal insertion device and a terminal insertion method in which even when the position of the crimping part of the core wire of each terminal is shifted up and down relative to the center of the wire of the live wire terminal Also, the terminal can be smoothly and reliably inserted into the connector housing.

In order to achieve the above object, the terminal insertion device of claim 1 of the present invention is characterized in that it has: a pair of left and right terminal buckles for terminal insertion with a protruding portion facing inward for terminal support; The crimping part of the core wire is pressed against the terminal pressing member on the protruding part; the measuring mechanism for measuring the height of the crimping part of the core wire relative to the center of the wire; according to the measurement result, the terminal buckle is pressed against the terminal The component is lifted and lowered integrally to adjust the guide and the motor up and down to correct the inclination of the terminal in the up and down direction.

According to the above configuration, the core wire crimping portion of the terminal is grasped and positioned from around by the pair of left and right terminal buckles, their protruding portions, and the terminal pressing member. The height of the crimping portion of the core wire relative to the center of the electric wire may be measured in advance (in a single state of the live wire terminal), or, as described in claim 2, the terminal pressing member may be pushed against The measurement was performed in the state of the crimped part of the core wire (the latter is the best method). Compared with the height of the standard core wire crimping part recorded in advance, according to the result, the control part drives the motor at the required rotation angle, and the terminal buckle and the terminal pressing member are integrally moved up and down along the vertical adjustment guide. Or down), to correct the inclination of the terminal in the up and down direction, so that the terminal is in a horizontal state. In this state, the terminal buckle preliminarily inserts the front end of the terminal into the terminal accommodation chamber of the connector housing (the front end of the terminal will not interfere with the upper and lower edges of the terminal accommodation chamber), and the wire buckle fully inserts the terminal.

The terminal insertion device according to claim 2 is the terminal insertion device according to claim 1, wherein the measuring mechanism presses the core wire crimping part from above with the terminal pressing member. In the state of the protruding portion, the height of the crimping portion of the core wire relative to the center of the electric wire was measured.

According to the above configuration, in the state where the terminal pressing member is pushed against the core wire crimping portion, the height of the core wire crimping portion can be accurately measured, and the inclination of the terminal in the vertical direction can be corrected with high accuracy based on the measurement result. Improve terminal insertion accuracy. Preferably, the measuring mechanism is connected to the terminal pressing member.

The terminal insertion method of claim 3 is characterized in that the live wire terminal is held by a pair of left and right terminal buckles having an inwardly protruding portion for supporting the terminal, and the core of the terminal is held in advance or by a terminal pressing member from above. In the state where the crimping part of the wire is pushed against the protruding part, the height of the crimping part of the core wire relative to the center of the wire is measured by the measuring mechanism. The terminal pressing member is integrally raised and lowered to correct the vertical inclination of the terminal, and the terminal is inserted into the connector housing in this state.

According to the above configuration, the core wire crimping portion of the terminal is grasped and positioned from around by the pair of left and right terminal hooks, their protruding portions, and the terminal pressing member. The height of the crimping part of the core wire relative to the center of the wire may also be measured in advance (in a single state of the live wire terminal), or may be measured in a state where the terminal pressing member is pushed against the crimping part of the core wire (later whichever is the best way). Compared with the height of the standard core wire crimping part with the measurement result recorded in advance, the control part drives the motor at the required rotation angle according to the result, and the terminal buckle and the terminal pressing member are integrally raised and lowered along the vertical adjustment guide ( Rise or fall) to correct the inclination of the terminal in the up and down direction, so that the terminal is in a horizontal state. In this state, the terminal buckle preliminarily inserts the front end of the terminal into the terminal accommodation chamber of the connector housing (the front end of the terminal will not interfere with the upper and lower edges of the terminal accommodation chamber), and the wire buckle fully inserts the terminal. In addition, in the state where the terminal pressing member is pushed against the crimping part of the core wire, the height of the crimping part of the core wire can be accurately measured, and the inclination in the vertical direction of the terminal can be corrected with high precision based on the measurement result, and the terminal can be improved. insertion precision.

Invention effect

According to the invention recited in claim 1, even when the position of the crimping portion of the core wire of the terminal is shifted up and down relative to the center of the wire of the live wire terminal on each terminal, it is possible to place the terminal without interference or the like. Insertion into the connector housing is smooth and reliable, and it is possible to prevent a decrease in productivity of subwire harnesses due to incorrect terminal insertion.

According to the invention of claim 2, the height of the core wire crimping portion can be accurately measured in a state where the terminal pressing member is pushed against the core wire crimping portion, and the terminal can be moved up and down with high precision based on the measurement result. The correction of the direction inclination can improve the insertion accuracy of the terminal.

According to the invention recited in claim 3, even when the position of the crimping portion of the core wire of the terminal on each terminal is shifted up and down relative to the center of the wire of the live wire terminal, the terminal can be moved smoothly without interference or the like. And it can be reliably inserted into the connector housing, and it is possible to prevent a reduction in the productivity of the sub-harness due to incorrect terminal insertion. In addition, by accurately measuring the height of the core wire crimping portion in a state where the terminal pressing member is pushed against the core wire crimping portion, the inclination of the terminal in the vertical direction can be corrected with high precision based on the measurement result, Insertion accuracy of the terminal can be improved.

Description of drawings

FIG. 1 is a perspective view showing an embodiment of a terminal insertion device and a terminal insertion method of the present invention.

2 shows an embodiment of a conventional terminal insertion method, wherein (a) is a side view showing a standard terminal snapped state, and (b) is a side view showing a state where the terminal is clamped obliquely forward and upward. .

Explanation of reference signs

1-terminal insertion device

2 terminal buckle

3 protrusions

4 terminals

4a core wire crimping part

5-terminal pressing member

9 Adjust the guide up and down

10 servo motor (motor)

17 Displacement detection sensor (measuring mechanism)

21 wires

Detailed ways

FIG. 1 is a diagram showing an embodiment of a terminal insertion device and a terminal insertion method of the present invention.

The terminal insertion device 1 has: a pair of left and right terminal buckles 2; a terminal pressing member 5 that pushes the terminal 4 against the upper side of the horizontal protrusion 3 at the lower end of the terminal buckles 2; opens and closes the pair of terminal buckles 2 The pneumatic chuck cylinder 6; the cylinder 7 for lifting and lowering the terminal pressing member 5; the block part 8 for fixing the air chuck cylinder 6 and the cylinder 7; A rail-shaped vertical adjustment guide 9; and a servo motor (motor) 10 that drives the block portion 8 to move up and down along the vertical adjustment guide 9.

On at least one of the pair of terminal hooks 2 , preferably on both, a horizontal protruding portion 3 facing inward is provided. A pair of terminal buckles 2 are located on the left and right facing each other, wherein any one of the protruding parts 3 is formed longer, (or) each of the two protruding parts 3 is formed to be shorter, and any one or both of the protruding parts 3 are formed to be shorter than each other. The lateral width of the terminal 4 is narrow.

The terminal buckle 2 has: a vertical long plate portion 11; a thin plate-shaped short claw portion 12 protruding inward in a step-like manner from the lower part of the long plate portion 11; a protruding portion 3 protruding inward from the lower end of the claw portion 12; A horizontal flange portion 13 is bent rearward at the upper end of the long plate portion 11 .

The terminal pressing member 5 is formed in a rectangular plate shape, and is in contact with the rear surface 12 a of the claw portion 12 slidably between the long plate portions 11 of the pair of terminal hooks 2 . A vertical rod 14 is fixed on the upper end of the terminal pressing member 5, and the rod 14 extends upwards through a pair of long plate parts 11 and penetrates the main body of the cylinder (commercially available double rod cylinder) 7 (substituted by reference numeral 7). The upper end 14a of 14 is connected to the parallel side bar 16 through the horizontal connection member 15, and the side bar 16 functions as a part of the displacement detection sensor (measuring mechanism) 17, for example, and the displacement detection sensor 17 is connected with the control part of the servo motor 10. circuit connection.

The vertical inner surfaces 12b of the claws 12 of a pair of terminal buckles 2 hold the left and right side surfaces of the core wire crimping portion 4a of the terminal 4, and the horizontal upper surface of the protruding portion 3 supports the horizontal bottom surface of the core wire crimping portion 4a. The horizontal lower surface of the terminal pressing member 5 presses the horizontal upper surface of the core wire crimping portion 4 a downward, and sandwiches the core wire crimping portion 4 a between the lower surface and the protruding portion 3 .

The core wire crimping portion 4 a is a portion where the conductive portion (core wire) of the electric wire 21 is crimped (riveted) by a pair of left and right front crimping pieces (see FIG. 2 ). The insulation covering crimping portion is located higher on the rear side of the core wire crimping portion 4 a than the core wire crimping portion 4 a (refer to FIG. 2 ). In FIG. 1 , the female terminal 4 is shown, but also in the case of a male terminal (not shown), the core wire crimping part 4 a is sandwiched from around by the terminal hook 2 , the protruding part 3 and the terminal pressing member 5 .

The flanges 13 on the upper ends of the pair of terminal buckles 2 are slidably engaged with the horizontal guide rails 19 in the left and right directions via a pair of horizontal sliders 18. The pair of sliders 18 utilize the chuck cylinder 6 on the upper side and the terminal The buckle 2 integrally opens and closes in the left and right directions.

The cylinder 7 is positioned at the front side of the chuck cylinder 6, and the plate-shaped block portion 8 is fixed on the upper side of the chuck cylinder 6, and the cylinder 7 is fixed on the block portion 8 through the bracket 20, and the slide block on the rear side of the block portion 8 22 is engaged with the guide rail portion 23 of the vertical vertical adjustment guide 9 in a manner to slide freely in the up and down direction, and the vertical threaded shaft (not shown) of the vertical adjustment guide 8 is fixed to the rear side of the block portion 8, for example. Nuts (not shown) are screwed together, and the front part of the horizontal toothed belt 24 meshes with the toothed pulley (not shown) fixed on the upper end of the threaded shaft, and is fixed on the shaft 25 of the vertical servo motor 10 on the rear side The toothed pulley 26 is engaged with the rear portion of the toothed belt 24 .

The terminal insertion head 1 of the terminal insertion device is composed of at least the terminal buckle 2, the terminal pressing member 5, the cylinders 6, 7, the vertical adjustment guide 8 and the servo motor 10. The horizontal cylinder and guide rail in the direction can advance and retreat forward and backward, and can move to the left and right by unillustrated drive mechanisms such as the horizontal guide rail in the left and right directions, motors and threaded shafts.

Hereinafter, the operation of the terminal insertion device 1 and the terminal insertion method will be described. Utilize for example forward rotation of servo motor 10 to make terminal buckle 2 and terminal pressing member 5, each air cylinder 6, 7 etc. rise integrally, utilize the reverse rotation of servo motor 10 to make terminal buckle 2 and terminal pressing member 5, each air cylinder 6, 7 and so on drop in one piece. The vertical movement of the terminal buckle 2 is numerically controlled by the control unit of the servo motor 10 according to the vertical displacement between the center of the electric wire 21 and the center of the core wire crimping portion 4 a of the terminal 4 .

A pair of left and right wire clips not shown is disposed behind the terminal clip 2 . The wire buckle holds the insulation covering part of the wire 21, the terminal buckle 2 holds the core wire crimping part 4a of the terminal 4, and the terminal pressing member 5 pushes the core wire crimping part 4a against the protruding part of the terminal buckle 2 3 on.

In this state, the displacement sensor 17 connected (connected) to the terminal pressing member 5 measures the height of the core wire crimping portion 4a, and the height of the core wire crimping portion 4a is calculated for each terminal 4 by the control unit of the servo motor 10. The height (thickness) relative to the center of the electric wire, that is, the vertical distance from the center of the electric wire to the bottom surface of the core wire crimping part 4a (refer to the symbol h in FIG. The position (height) of the terminal 4 held by the terminal hook 2 is adjusted, and the vertical inclination of the terminal 4 (terminal posture) is corrected.

For example, when the center of _the core wire crimping portion 4a of the terminal ₄₁ shown _in FIG. The buckle 2 rises slightly along the vertical adjustment guide 9, so that the terminal ₄₁ is in a horizontal state. As shown in Figure 2 (b), the center of the core wire crimping portion 4a of the terminal ₄₂ is substantially consistent with the center m of the electric wire ₂₁₂ , and the terminal ₄₂ is inclined forward and upward, the terminal card of Figure 1 Buckle 2 descends slightly along the up and down adjustment guide 9, so that terminal ₄₂ is in a horizontal state.

In this way, in a state where the posture of the terminal 4 is corrected based on the vertical distance h from the center of the electric wire 21 to the bottom surface of the core wire crimping portion 4a of the terminal 4, the terminal 4 is inserted into the connector housing (not shown), and the Therefore, the tip (front end) 4b of the terminal 4 does not interfere with the upper and lower edges of the terminal accommodating chamber of the connector housing, and the terminal 4 can be smoothly inserted into the terminal accommodating chamber.

By largely moving the terminal hook 2 up and down along the vertical adjustment guide 9 , the vertical position of the center of the terminal 4 is defined with respect to the terminal accommodation chamber of the connector housing. Use the terminal buckle 2 to make the terminal 4 move up and down greatly along the vertical adjustment guide 9, and at the same time, or before or after it, measure the height of the core wire crimping part 4a with the displacement detection sensor 17 and correct the posture of the terminal 4 . In addition to using the vertical adjustment guide 9, it is also possible to use the vertical adjustment guide 9 to drive, and at the same time, the terminal buckle 2 can be greatly raised and lowered by another driving mechanism (not shown). The terminal 4 is moved in the front-back direction by a drive mechanism including a horizontal air cylinder not shown.

The terminal buckle 2 holding the terminal 4 is advanced by the drive of the horizontal air cylinder not shown, and the tip (front end) 4b of the terminal 4 is inserted (preliminarily inserted) into the required part of the connector housing not shown. In the terminal accommodating room, the terminal buckle 2 releases the grip on the terminal 4 (releases the terminal 4), and the terminal buckle 2 and the terminal pressing member 5 are lifted up and separated from the terminal 4 integrally by using the vertical adjustment guide 9, not shown in the figure The wire buckle is advanced by a driving mechanism such as an air cylinder not shown, and the terminal 4 is completely inserted into the terminal insertion chamber. The terminal 4 is locked by the locking member in the terminal accommodation chamber.

In addition, without using the displacement detection sensor 17, the height (from the center of the wire to the center of the core wire) of the several core wire crimping portions 4a with respect to the wire center of the live wire terminal 4 can be measured with a gauge or the like for each type of terminal 4. The vertical distance h) of the bottom surface of the crimping part 4a is based on the average value, and the servo motor 10 is used to limit the vertical position of the terminal buckle 2, that is, the terminal 4, and correct the posture of the terminal 4. However, in this case, it is undeniable that the insertion accuracy is lowered compared with the case where the height of the core wire crimping portion 4 a of the terminal 4 is individually measured by the displacement detection sensor 17 as described above.

Industrial availability

The terminal insertion device and terminal insertion method of the present invention can adjust the buckle height of the terminal for each type of terminal and even each terminal, correct the posture (inclination) of the terminal, and can smoothly and correctly insert the live wire terminal into the connector housing, It can be applied to improve the productivity of a sub-harness composed of a plurality of electric wires and connectors.

Claims (3)

1. A terminal insertion device, characterized in that the terminal insertion device has: a pair of left and right terminal buckles for terminal insertion, with inwardly facing protrusions for terminal support; a terminal pressing member for pressing the crimping part of the core wire of the live wire terminal against the protruding part from above; a measuring mechanism for measuring the height of the crimping portion of the core wire relative to the center of the wire; and The guide and the motor are adjusted up and down, and the terminal buckle and the terminal pressing member are lifted and lowered integrally according to the measurement result, so as to correct the inclination of the terminal in the vertical direction. 2. The terminal insertion device according to claim 1, wherein the measuring mechanism measures the core in a state where the terminal pressing member presses the crimping portion of the core wire against the protruding portion from above. The height of the wire crimp relative to the center of the wire. 3. A terminal insertion method, characterized in that a live wire terminal is held by a pair of left and right terminal buckles having a protruding portion facing inward for terminal support, and the terminal is held in advance or by a terminal pressing member from above. In the state where the crimping part of the core wire is pressed against the protruding part, the height of the crimping part of the core wire relative to the center of the wire is measured by the measuring mechanism, and according to the measurement result, the guide and the motor are adjusted up and down to make the terminal buckle and The terminal pressing member is integrally raised and lowered to correct the vertical inclination of the terminal, and the terminal is inserted into the connector housing in this state.

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