JP2907262B2 - Wire twisting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire twisting apparatus for pre-twisting a core wire when crimping a terminal to an end of an electric wire to eliminate fraying and facilitate crimping.

[0002]

2. Description of the Related Art To twist an electric wire, a pair of twisted rods are arranged between a wire cutter and an insulated cutter, and the electric wire is peeled (insulation coating is removed), and at the same time, the twisted rods are connected to each other by a driving mechanism. The core wire is twisted by moving the coating in the opposite direction to rotate the coating.

FIG. 7 shows a conventional wire twisting apparatus (Japanese Utility Model Laid-Open No. 1-146709). In this device, the base ends of a pair of twisted rods 50, 50 'are attached to mounting members 52, 52' with spacers 51 disposed around the pair of twisted rods, and the mounting members 52, 52 'are driven by a driving mechanism for the twisted rods. 53. By replacing the spacer 51, the position of the electric wire W is adjusted in the axial direction (that is, the direction in which the electric wire is supplied and the direction opposite thereto) and in the direction orthogonal thereto. In addition, of the pair of twisted rods 50, 50 ', one of the twisted rods 50 is adjusted by a micrometer 54 and a push rod 55 to adjust the clamping position of the electric wire, and the other twisted rod 50' is an urging member whose urging force is adjustable. It is urged in the direction of clamping the electric wire by means 56 (spring 57, push rod 55 '), and the urging force is confirmed by, for example, a pressing force indicating needle 58.

[0004]

In the conventional electric wire twisting apparatus, the adjustment of the position of the twisting rods 50, 50 'with respect to the electric wire W and the adjustment of the holding position are performed by mounting members 52, 5 provided with spacers 51.
2 ', the micrometer 54 and the urging means 56 in total. Therefore, since these adjusting means are related to each other and the adjusting mechanism becomes complicated, when changing the twisting condition according to the type of the electric wire, it takes time to adjust,
It required a high degree of experience and skill. SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides an electric wire twisting device that can be easily and quickly performed without setting or changing the twisting conditions of the electric wire according to the type of the electric wire, without any special skill. That is the task.

[0005]

According to a first aspect of the present invention, there is provided an electric wire twisting apparatus comprising: a pair of opposing twisting rods for holding an electric wire; An electric wire twisting device for twisting an electric wire by moving rods in opposite directions by a driving mechanism, the one end supporting the pair of twisted rods, and the other end provided with a long hole in a direction orthogonal to the twisted rods. A rod holder, a pair of holding members for holding the pair of twisted rod holders slidably up and down, and wire chuck means for moving the pair of holding members so as to be able to freely contact and separate in a direction orthogonal to the twisted rod, The reverse drive means includes a rotary actuator that reciprocates at a predetermined rotation angle, and a cam plate that rotates coaxially with the rotary actuator and has cam pins provided at symmetrical positions with respect to the rotation axis. Twist a pair of cam pins Each is loosely fitted in the elongated hole of the rod holder, characterized by comprising. The electric wire chucking means is operated pneumatically as described in claim 2, and the force applied to the pair of twisted rods is adjusted pneumatically.

[0006]

In the apparatus according to the present invention, the pair of twisting rods move up and down in opposite directions due to the reciprocating rotation of the rotary actuator (cam plate), that is, a simple vertical movement. Then, the pair of twisted rods move freely in a direction orthogonal to the axial direction of the twisted rod holder via a holding member of the twisted rod holder constituting the electric wire chucking means, and pinch and release the electric wire. Therefore, when changing or setting the twisting condition of the wire, only the portion of the wire chucking means is to be adjusted, and it is sufficient if the clamping pressure of the wire by the pair of twisted rods can be controlled, and the adjustment can be easily and quickly performed. it can. Also, by operating the electric wire chucking means, that is, holding the electric wire between the pair of twisted rods by pneumatic pressure, the structure and equipment are simple, unlike the hydraulic type, and the apparatus can be miniaturized.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; FIG. 1 is a front view of the wire twisting apparatus of the present invention, and FIG. 2 is a right side view thereof. 1 and 2
As shown in (1), the wire twisting device is configured by combining a cutter unit A and a wire twisting unit B. Cutter unit A
As shown in FIG. 6, a pair of left and right wire cutters 1,
1 ′, a pair of insulating cutters 2 for cutting the insulation coating,
2 ', and both cutters 1, 1' and 2, 2 '
A pair of twisted rods 10, 10 'is arranged between them. 3,
Reference numerals 3 'denote support members for the wire cutters 1 and 1' and the insulator cutters 2 and 2 ', respectively. The support members 3 and 3 are mounted on the base plate 5 by a known slide mechanism so as to be freely movable. The configuration of the cutter unit A is publicly known.
47385, etc.), and detailed description is omitted. Reference numeral 6 denotes a stand on which the cutter unit A is set.

The wire twisting unit B comprises a pair of twisting rods 10 and 10 'facing each other, twisting rod holders 11 and 11', holding members 17 and 17 'thereof, an air chuck 19, a rotary actuator 24, a cam plate 27 and the like. The pair of twisted rods 10 and 10 'are configured to be able to move up and down in directions opposite to each other and to be able to freely contact and separate from each other. In addition, a pair of twisted rods 10, 1
The left-right symmetrical components such as 0 'will be mainly described as one of them.

As shown in FIG. 6, the twist rod 10 preferably has a serration 10a for preventing slippage on its inner surface.
The twist rod holder 11 that supports the twist rod 10 has a cam engaging piece 12 projecting outward at an upper end and an L-shaped mounting piece 14 projecting inward at a lower end. The rail 15 is fixed by a screw 16. An elongated hole 13 orthogonal to the axial direction of the twist rod holder 11 is formed in the cam engaging piece 12 at the upper end, and the twist rod 1 is formed in the mounting piece 14 at the lower end.
0 is likewise fixed by screws 16.

The stranded rod holder 11 is held by a holding member 17 so as to be vertically movable. That is, a linear motion bearing 18 is fixed to the lower end of the holding member 17.
The twist rod holder 11 is held so as to be able to slide up and down. On the other hand, the pair of holding members 17 and 17 ′ are fixed to the pair of leg pieces 20 and 20 ′ of the air chuck 19. The air chuck 19 has a built-in link opening / closing mechanism that is operated by air pressure, and moves the leg pieces 20 and 20 ′ in parallel so as to be able to freely contact and separate by changing the supply pressure, and reduces the pinching pressure of the electric wire by the twist rods 10 and 10 ′. Can be adjusted. As the air chuck 19, a commercially available product having a known configuration may be used, and the detailed description is omitted. The air chuck 19 is connected to a regulator (not shown), and the twisting condition is adjusted by changing the air pressure. It is designed to be able to read accurately with a total.

Reference numeral 21 denotes a mounting plate to which the air chuck 19 is fixed, and reference numeral 22 denotes a decorative plate on the front surface thereof. The mounting plate 21 is formed to protrude from the fixing plate 23 of the rotary actuator 24 to the front surface. The rotary actuator 24 is configured to reciprocate at a predetermined rotation angle right and left around a rotation shaft 25 thereof. The rotation shaft 25 is provided with a pair of cam pins 26 and 26 ′ that are axially symmetric. The pair of cam pins 26, 26 'are loosely fitted in the elongated holes 13, 13 of the twisted rod holders 11, 11', respectively. Therefore, when the rotary actuator 24, that is, the cam plate 27 reciprocates as shown by the arrow P, the twist rod 10,
10 'move up and down in opposite directions.

The fixed plate 23 of the rotary actuator 24 is provided with an upper plate 28 at the upper end on the back side, and linear motion bearings 29 fixed on both lower sides. The linear motion bearing 29 is engaged with guide columns 32 erected on both front sides of the base block 31 of the wire twisting unit B, and is provided between the stopper 33 fixed to the upper end of the guide column 32 and the base block 31. A cylinder barrel 35 and a piston mount 36 constituting a pneumatic rodless cylinder 34 are provided. By the operation of the rodless cylinder 34, as shown in FIG. 3, the wire twisting unit B such as the twisting rods 10, 10 ', the air chuck 19, the rotary actuator 24, and the like is cut via the fixing plate 23 and the mounting plate 21.
Can be moved upward. Note that 37,3
Reference numeral 8 denotes a supply and discharge port of compressed air to and from the cylinder barrel 35. Reference numeral 39 denotes a front / rear position lock lever of the wire twisting unit B with respect to the cutter unit A, and reference numeral 40 denotes a front / rear position adjusting screw. 41 is a frame of the electric wire twisting unit B, and 42 is a fixing bolt thereof.

Next, the operation of the wire twisting device will be described. FIG. 2 shows a state in which the wire cutters 1 and 1 'and the insulator cutters 2 and 2' (see FIG. 6) are opened, respectively, and the end of the electric wire W is fed between the opened twisted rods 10 and 10 '. Is shown.

FIG. 4 shows a state where the twisting of the electric wire is started. That is,
Open wire cutters 1, 1 'and insulator cutters 2, 2'
There close respectively, to cut the coating w ₂ of the terminal portion of the wire W by insulation cutter 2,2 'as shown in FIG. At the same time, the leg pieces 20, 2 are actuated by the operation of the air chuck 19.
0 ', holding members 17, 17', twisted rod holders 11, 1
The pair of twisted rods 10, 10 'is closed via 1' to clamp the electric wire W. Thus, the air chuck 19 having the leg pieces 20, the holding members 17, 17 ', and the twist rod holder 1
1, 11 'constitute the wire chuck means.

FIG. 5 shows a state in which the twisting of the electric wire is completed. That is,
From the twist start state in FIG.
When the cam plate 27 is rotated counterclockwise by a predetermined angle due to the rotation of the fourth rod 4, the twisted rod holders 11, 11 'which engage with the cam pins 26, 26' respectively hold one of the twisted rods 10 while clamping the electric wire W. Rise and the other strand 10 'descends. The ascending and descending positions (top dead center and bottom dead center) of the twisting rods 10, 10 'are determined by the rotary actuator 24 (cam plate 27).
Is determined by the rotation angle. Thus, the cam plate 2 having the rotary actuator 24 and the cam pins 26 and 26 '
7. Twisted rod holder 11, 1 having slots 13, 13 '
1 'constitutes a reverse drive means.

FIG. 6 shows that the twisted rod 10 rises as indicated by the arrow S while holding the electric wire W between the twisted rods 10 and 10 '.
By 0 'arrow S' rotate as descending to cut coated w ₂ the arrow line Q as show the state where start twisting the interior of the core wire w _1. Then, the twisted ends at the same time 5, by pulling the wire W backward as arrow line R, coated w ₂ are separated and removed from the wire.

As described above, the stranded rod 10, which twists the electric wire W,
10 'performs a simple up and down movement by the reciprocating rotation of the cam plate 27. Therefore, setting and changing the twisting condition can be achieved by changing the air pressure of the air chuck 19 and changing only the clamping force by the twisting rods 10 and 10'. Well, the adjustment is very simple. If the optimum conditions are determined according to the wire diameter of the insulated wire, the material of the insulated coating, etc., the air pressure is read by the pressure gauge and recorded, so that the subsequent adjustment can be performed more quickly and easily. It can be carried out. When maintenance and inspection or replacement of the cutter unit A is required, the work can be easily performed by moving the wire twisting unit B to the upper part as shown in FIG.

[0018]

As described above, the present invention provides an electric wire twisting device for twisting an electric wire by sandwiching the electric wire between a pair of opposing twisted rods and moving the pair of twisted rods in opposite directions by a driving mechanism. A stranded rod holder that supports the pair of stranded rods at one end, and has a long hole at the other end in a direction perpendicular to the stranded rod, and a pair of slidably holding the pair of stranded rod holders. A holding member, and means for moving the pair of holding members so as to be able to freely contact and separate in a direction perpendicular to the twisting rod, wherein the reverse direction driving means reciprocates at a predetermined rotation angle; and A cam plate that rotates coaxially with the actuator and is provided with cam pins at symmetrical positions with respect to the rotation axis, wherein the pair of cam pins are loosely fitted into the elongated holes of the pair of twisted rod holders. So, a pair of twisted rods Performing pure up and down movements, setting and changing the twisting condition is a part of the wire chucking means. For example, it is only necessary to change the pinching force of the wire by a pair of twisting rods by air pressure, and it is easy and quick without special skill. It can be carried out.

[Brief description of the drawings]

FIG. 1 is a front view of an electric wire twisting apparatus showing one embodiment of the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is a right side view showing a state where an air chuck and the like are raised in FIG. 2;

FIG. 4 is a front view of the front view of FIG. 1, showing a twisting start state in which the wire cutter and the twisting rod approach each other.

FIG. 5 is a front view showing the next twisted state of FIG. 4;

FIG. 6 is a perspective view of a main part showing a twisting start state of the electric wire.

FIG. 7 is an explanatory diagram of a conventional wire twisting device.

[Explanation of symbols]

A cutter unit B wire twisting unit W wire w ₁ wire w ₂ coating 10, 10 'twisted rods 11, 11' twisted rod holders 13, 13 'long holes 15, 15' guide rails 17, 17 'holding member 18, 18' Linear bearing 19 Air chuck 20, 20 'Leg piece 24 Rotary actuator 26, 26' Cam pin 27 Cam plate 34 Rodless cylinder 35 Cylinder barrel 36 Piston mount

Claims (2)

(57) [Claims] 1. An electric wire is sandwiched between a pair of opposing stranded rods,
An electric wire twisting device for twisting an electric wire by moving the pair of twisted rods in directions opposite to each other by a driving mechanism, the one end supporting the pair of twisted rods, and the other end having a long hole in a direction orthogonal to the twisted rods. A stranded bar holder provided with a pair of holding members that slidably hold the pair of stranded bar holders up and down,
An electric wire chuck means for moving the pair of holding members so as to be able to freely contact and separate in a direction perpendicular to the twisting rod, wherein the reverse direction driving means is a rotary actuator which reciprocates at a predetermined rotation angle; and A cam plate which is coaxially rotated and provided with cam pins at symmetric positions with respect to the rotation axis, wherein the pair of cam pins are loosely fitted into the elongated holes of the pair of twisted rod holders. Wire twisting device. 2. The electric wire twisting device according to claim 1, wherein the electric wire chucking means is operated by pneumatic pressure, and a force applied to the pair of twisted rods is adjusted by pneumatic pressure.