JP3054763B2 - Device for improving the twisting pitch of twisted pairs - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for improving the twist pitch accuracy of a twisted pair wire.

[0002]

In manufacturing a communication cable, conventionally, first, one wire is respectively drawn out from two separate wire supply bobbins, and the drawn out two wires are twisted. The paired twisted wire is wound around a bobbin to obtain a paired twisted wire supply bobbin. In this way, four paired twisted wire supply bobbins are prepared. One twisted pair wire was fed out, and the fed four twisted pair wires were twisted into a product twisted wire, that is, a communication cable, which was wound around a bobbin.

[0003] However, since communication cables have very severe electrical characteristics, it is necessary to increase the precision of the twist pitch of the paired twisted wires. In some cases, a problem occurred.

An object of the present invention is to provide an apparatus for improving the twisting pitch accuracy of a twisted pair wire, which can manufacture a communication cable which does not cause a problem in the electrical characteristics.

[0005]

SUMMARY OF THE INVENTION The pitch accuracy device twisted pairs twisted according to the present invention, a plurality of supply-side stranding machine for a pair stranded wire by twisting the two filament, a plurality of supply-side
A plurality of paired twisted wires are arranged in front of the twisting machine, and a plurality of paired twisted wires are twisted between a pair of twisted wires of one take-up side twisting machine which is formed by twisting a plurality of paired twisted wires which are unreeled from these twisted wires. A take-off means for taking in parallel, a take-off means having a non-slip layer on the peripheral surface, and a drive wheel deflecting in the latter half so that the parallel pair of twisted wires are pulled; and a drive wheel. are those along the half has a forward concave arcuate portion in contact from the outside to the pair twisted wire and the power of the drive wheels via the pair twisted wire is made of a driven endless belt which is not transmit after.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. In this specification, directions are based on FIG. 1 and FIG.
"Front" means the left side of the figure, "Back" means the right side of the figure,
“Left” refers to the left side from the rear to the front, and “right” similarly refers to the right side.

As shown in FIG. 1 to FIG. 7, the twist pitch accuracy improving device for a pair twisted wire comprises twisting two filaments (a1) and (a2) to form a twisted pair wire (b1) (b2) (b3). ) (b4), four feed-side twisting machines (A1) (A2) (A3) (A4), and four feed-side twisting machines (A1) (A2) (A
3) One take-up side twisting machine that is arranged in front of (A4) and twists four pairs of twisted wires (b1), (b2), (b3), and (b4) that are unreeled from them into a product twisted wire Twisting port (B) (not shown)
A take-up means (C) for taking the four pairs of twisted wires (b1), (b2), (b3), and (b4) in parallel is arranged between them.
(C) has a non-slip layer (101) on the peripheral surface, and is driven to the rear half of the circumference so that the paired parallel twisted wires (b1) (b2) (b3) (b4) are pulled. 102) and the latter half of the drive wheel (102)
Said pair stranded wire which is along the periphery (b1) (b2) (b3 ) (b4) forward concave arcuate portion in contact from the outside has a (103a) and said pair stranded wire (b1) (b2) (b3 ) It comprises a driven endless belt (103) to which the power of the drive wheel (102) is transmitted via (b4). The non-slip layer (101) is made of polyurethane.

[0008] The four feed-side twisting machines (A1) (A2) (A3) (A4)
It is attached in series to the machine frame (8) extending in the front-rear direction. On the left edge of the upper surface of the front end of the machine frame (8), a pair of twisted wire feeding guide rollers (104) corresponding to the four feed-side twisting machines (A1) (A2) (A3) (A4) are supported. A gantry (105) is provided. By the way, guide rollers (1
As can be seen from FIGS. 1 and 2, the four pairs of twisted pairs (b1), (b2), and (b3) are arranged in series in the front-rear direction.
The feeding position of (b4) is different. As a result, in this state, the ends of the four twisted pair wires (b1), (b2), (b3), and (b4) are not aligned in the twisting opening (B). In order to eliminate this problem,
Is located on the front guide roller for adjustment (10
6) an intermediate guide roller for adjustment (107) and a guide roller for adjustment (108), and there are four each. The four adjusting guide rollers (108)
Are supported side by side at a slight distance from each other on an overhanging pedestal (109) provided so as to extend leftward from the front upper end. The four front guide rollers for adjustment (106) are provided on a front surface of the overhanging pedestal (109).
10) are supported side by side at a slight distance from each other, and are positioned slightly in front of and below the adjusting guide roller (108). Four intermediate guide rollers for adjustment (107)
The vertical support bar (112) fixed to a bracket (111) provided on the upper left and lower edges of the front left edge of the machine frame (8) so as to protrude to the left, is vertically spaced from each other by a predetermined distance. It is supported. And the first supply side stranded wire machine from the front
The paired twisted wire (b1) fed out from (A1) passes through the first adjusting rear guide roller (108) from the right and passes through the fourth adjusting intermediate guide roller (107) from the top to the first from the right. Are diverted in a U-shape so as to reach the pre-adjustment guide roller (106). The pair twisted wire (b2) drawn out from the second supply side twisting machine (A2) from the front is fed from the second adjustment rear guide roller (108) from the right to the third adjustment intermediate guide from the top. It is diverted in a U-shape so as to reach the second front guide roller for adjustment (106) from the right via the roller (107). The pair twisted wire (b3) fed from the third feed side twisting machine (A3) from the front is fed from the third adjusting rear guide roller (108) from the right to the second adjusting intermediate guide from the top. roller
(107) and the third adjustment front guide roller from the right (1
It is diverted in a U-shape to reach 06). The pair stranded wire (b) unreeled from the fourth feeder stranded machine (A4) from the front
4) passes from the fourth adjustment rear guide roller (108) from the right to the fourth adjustment front guide roller (106) through the first adjustment intermediate guide roller (107) from the top. It is detoured in a U shape so as to reach. The positions of the four intermediate guide rollers (107) for adjustment are the four twisted pair wires (b1) (b
2) Due to the above different detour distances of (b3) and (b4), all the tips coincide with each other when passing through the four front adjustment guide rollers (106), despite the fact that the feeding positions are different. It is determined as follows.

At the front of the machine frame (8), a partition-like vertical wall (113) for arranging the take-up means is set up so as to extend in the front-rear direction. On the right side of the vertical wall (113), a plurality of vertical and horizontal reinforcing ribs (114) are provided, and at the lower end of the vertical wall (113), a base (115) is formed so as to form an inverted T shape. ) Is provided. The central portion of the upper rotating shaft (117) is rotatably supported by an upper horizontal shaft supporting portion (116) provided in the center of the vertical wall (113) near the upper end and having the same width and penetrating therethrough. A drive wheel (102) is mounted on the left end, and an upper large pulley (118) is mounted on the right end thereof together with a balance wheel (119). Below and slightly below the upper horizontal shaft support (116), a lower horizontal shaft support (120) is provided through the vertical wall (113) so that the left half of the lower rotary shaft (121) is rotatable. A middle large pulley (122) and a middle small pulley (123) are attached to the right half in this order from the right. In the center of the right side of the base (115), the motor (124)
The lower shaft is attached to the output shaft (125).
(126) is attached. And lower small pulley (126)
The lower belt (127) is wound around the intermediate large pulley (122), and the upper belt is wound on the intermediate small pulley (123) and the upper large pulley (128).
(128), the rotational power of the motor (124) is reduced and transmitted to the drive wheel (102) so that the drive wheel (102) is rotated clockwise in FIGS. 1 and 3. Has become. At the front end of the vertical wall (113), an upward protrusion (129) is provided, and on the left side of the vertical protrusion (129), the twisted pair wires (b1) (b2) passing through the front guide roller (106) for adjustment.
A guide roller (130) for lowering (b3) and (b4) from above the front of the drive wheel (102) is provided. Vertical wall (11
At the front end of (3), just below the guide roller (130), the pair twisted wires (b1), (b2), (b3), and (b4) descending downward are driven by the drive wheel (1).
02), a guide roller (131) is provided at the upper end of the drive wheel (102) from above in front of the drive roller (102) so as to be directed horizontally.
At the front end of the vertical wall (113), the front projection (13
2) are provided, and guide rollers (133) and (134) are arranged in front of and behind the left side. Then, the horizontal arm (136) attached to the front end and the rear end of the horizontal arm (136) are positioned at the lower end so that the dancer roller (135) is located below the middle of the front and rear guide rollers (133). Vertical lever (137) rotatably mounted on the
The upper end of (137) is pivotally mounted and the vertical wall (11
The bracket (138) provided on the left side of 3) is arranged. In the middle of the length of the horizontal arm (136), the piston rod (140) of the downward hydraulic cylinder (139), whose base is pivotally mounted on the left side of the vertical wall (113)
Is rotatably mounted at the tip. The later guide roller (134) guides the twisted pair wires (b1) (b2) (b3) (b4) around the latter half circumference of the drive wheel (102) horizontally forward and then dancer roller (134). (135). The previous guide roller (133) is the dancer roller (13
5) The pair twisted wires (b1) (b2) (b3) (b4) around the lower half circumference of (5) are directed to the twisting opening (B). Guide roller (130)
The (131), (133), (134) and the dancer rollers (135) are each four, and are arranged in parallel at close intervals. The driven endless belt (103) is connected to the drive wheel (1
02) between the upper and lower pulleys (141) and (142) arranged above and below and the intermediate pulley (143) arranged behind the drive wheel (102) between the upper and lower pulleys (141) and (142). Have been. The center of the upper and lower pulleys (141) (142) is
02) on a vertical line passing through the center, and the center of the intermediate pulley (143) is on a horizontal line passing through the center of the drive wheel (102). At the position corresponding to the intermediate pulley (143) on the vertical wall (113), a rectangular block (145) having a horizontally long hole (144) is fixed. The vertical wall (113) is also provided with a horizontal slot (146) corresponding to the horizontal slot (144). Intermediate pulley (1
The diameter of the shaft (147) on which the shaft (43) is rotatably mounted is larger than the width of the horizontal slot (144), but the upper and lower arc surfaces are cut out to form a horizontal plane (148), and the shaft (147) Is a long hole (1
44) It can slide inside. At the right end of the shaft (147), a male screw portion (149) having a smaller diameter is provided so as to protrude rightward, and a fixing nut (150) is screwed into the male screw portion (149). By screwing the nut (150), the shaft (147) can be fixed at a desired position in the horizontal slot (144). Therefore, the horizontal slot (146) is
It has a width that allows the nut (150) to be turned. Horizontal slot (14
4) The rear wall (151) has a through hole (152), and the shaft (147) has a screw hole (153) corresponding to the through hole (152). (154) is rotatably penetrated through the through hole (152) and the screw hole (153)
Screwed into. Bolt for adjusting belt tension (154)
Is provided with two flanges (155) sandwiching the rear wall (152) so that the bolts (154) can be rotated at the same position. When the shaft (147) is to be moved in the front-rear direction, the nut (150) may be loosened and the belt tension adjusting bolt (154) may be turned clockwise or counterclockwise. If the bolt (154) is turned clockwise, the shaft (147) and, consequently, the intermediate pulley (143) move rearward, the tension of the driven endless belt (103) increases, and the bolt (154) can be turned counterclockwise. If the shaft (147) and thus the intermediate pulley (143) move forward, the driven endless
The tension of the belt (103) decreases. By this operation, the latter half of the drive wheel (102) and the driven endless belt (10
Forward concave arc-shaped portion of 3) (103a) pairs according stranded wire (b1) (b2)
(b3) Adjust the pinching force on (b4). Screwing the nut (150) at the desired position of the shaft (147) secures the shaft (147). The upper pulley (141) has an intermediate pulley (14
3) above the front end of the upper lever (158) via a fulcrum pin (156) so as to be rotatable on the vertical wall (113) and having a joint (157) near the base end. ) Is attached rotatably. Lower pulley (142)
The lower lever () has a base end rotatably attached to the vertical wall (113) via a fulcrum pin (160) at a position below the front end of the intermediate pulley (143), and has a joint (161) near the base end. 1
62) is rotatably attached to the tip of the shaft 62 via a shaft (163). At the tip of the up / down levers (158) and (162), an ear (165) protruding forward and having a through hole (164) is provided, and a recess (166) is provided on the back surface near the tip of the up / down levers (158) and (162). Is formed. On the left side of the vertical wall (113) is a recess (166)
A temporary fixing member (167) is arranged at a position corresponding to the above, and a permanent fixing member (168) is arranged at a position corresponding to the through hole (164). The temporary fixing member (167) has a built-in spring (not shown), and a little less than half of it is housed in the opening of the bottomed cylinder (169) having a tapered end so that it can be freely retracted and urged by the spring. It is a ball. The mounting wall (170a) of the bracket (170) for mounting the inverted Z-shaped temporary fixing member fixed to the vertical wall (113) is a vertical lever.
(158) It exists parallel to the back surface of (162) at a slight distance, and a threaded hole is formed in this mounting wall (170a), and the bottomed cylinder (1
A male screw portion provided on the outer periphery of 69) is screwed so that the ball protrudes from the surface side of the mounting wall (170a). This stop member (168) is a hydraulic cylinder (171)
The tip of the piston rod is formed in a tapered shape. The mounting wall (172a) of the bracket (172) for fixing the Z-shaped permanent locking member fixed to the vertical wall (113) is slightly different from the surface of the ear (165) provided on the vertical levers (158) and (162). The mounting wall (172a) has a threaded hole, and a male thread provided on the outer periphery of the tip of the cylinder is screwed, and the piston rod is attached to the mounting wall (172a). (172a) is projected from the rear surface side. By the way, first the pair twisted wires (b1) (b2) (b3) (b4) are connected to the latter half circumference of the drive wheel (102) and the driven endless belt (103).
Of the sandwich between the forward concave arcuate portion (103a), a driven endless belt (103) as shown by the chain line in FIG. 3, it is necessary to separate from the driving wheel (102). At this time, the upper and lower levers (158) and (162) are bent from the joints (157) and (161),
The rear side of the driven endless belt (103) in the upper pulley (141) and the lower pulley (142) is vertical. To keep this state, although not shown, the temporary fixing member (167)
And a pair of locking members (168) are arranged above and below a predetermined position of the vertical wall (113). When the upper and lower levers (158) and (162) are temporarily fixed, a temporary fixing member (167) made of a ball is pushed on the back surface of the upper and lower levers (158) and (162), and is opposed to a spring.
69), but when it is aligned with the depression (166), the temporary fixing member (167) is pushed out by the spring force, and the two temporarily engage. After this, the hydraulic cylinder (1
71) to operate the final stop member (1
68) are inserted into the through holes (164) of the ears (165) and are permanently fixed.

The four pairs of twisted wires (b1), (b2), (b3), and (b4) are wound around the second half of the drive wheel (102) and the driven endless belt (10).
When forward concave arc-shaped portion of 3) (driving wheel in a state of sandwiching the 103a) (102) is rotated in the clockwise direction, via the pair stranded wire (b1) (b2) (b3) (b4) The power of the drive wheel (102) is transmitted to the driven endless belt (103), and the driven endless belt (103) rotates counterclockwise. As a result, in combination with the presence of the non-slip layer (101), four pairs of twisted wires (b1)
(b2), (b3) and (b4) are reliably and uniformly pulled without slipping on the peripheral surface of the drive wheel (102), and the tension is a twisted pair wire (b1)
From (b2), (b3) and (b4), the four feed-side twisting machines (A1) (A2) (A3) (A
Each two wires before being twisted into a pair twisted wire in 4)
(a1) and (a2) are transmitted to improve the twist pitch of the pair twisted wires (b1) (b2) (b3) (b4). If there is no collection means (C)
And four feed-side twisting machines (A1) (A2) (A3) (A4) and one winding
The distance between the take-up stranded wire machine and the take-up stranded wire
Two wires (a1) before they are twisted into paired wires from the machine
The tension transmitted to (a2) becomes unstable, and the twist pitch becomes longer.
Short irregularities occur.

[0011] 4 from the guide roller (133) to the twisting port (B) of the winding side twisting machine disposed in front of the guide roller (133).
The two twisted pair wires (b1), (b2), (b3), and (b4) are passed through a dispersing plate (173) placed in front of them, before passing through the twisting opening (B), and In the above, they are once dispersed so as to be equally spaced at four points.

The feed-side twisting machines (A1), (A2), (A3) and (A4) are all the same, but the details thereof will be described with reference to one of the twisting machines (A1) shown in FIGS. Shown in

This stranded wire machine is a vertical stranded wire machine, and is provided with a cradle steady rest device and a filament feed device (S).

As shown in FIG. 8 and FIG. 9, the cradle steady rest device comprises a cradle (1) having a vertical upper spindle (2).
And the vertical lower spindle (3).
A side hole (4) is formed in the middle of the length of (3),
A hollow part (5) extending from the lower end of the lower main shaft (3) to the lateral hole (4) is formed, the central shaft (6) is passed through the hollow part (5), and the upper end part (6a) of the lower part ), And its lower end (6b) is projected downward from the lower spindle (3) and fixed to the lower part of the machine frame (8) via the mounting member (7),
The lower main shaft (3) is rotatably fitted to the center shaft (6), a hanging shaft (9) is provided at the lower end of the cradle (1), and the lower main shaft (3) has a hollow part (10) for fitting. Formed with lower spindle (3)
The upper end (3a) of the lower shaft (9) is rotatably fitted to the lower part of the hanging shaft (9), and the eccentric shaft
(11) is arranged so as to be able to revolve with the rotation of the lower main shaft (3), and is rotatably attached to a flange-shaped support portion (12) provided on the lower main shaft (3) in a penetrating manner; Upper end of center shaft (6) (6
a) has a first pulley (13), a lower end (11a) of the eccentric shaft (11) has a second pulley (14), and an upper end (11b) of the eccentric shaft (11) has a third pulley (15). A fourth pulley (16) is attached to the upper part of the hanging shaft (9), a lower belt (17) is attached to the first pulley (13) and the second pulley (14), and a third pulley (15) and the fourth The upper belt (18) is wound around the pulley (16).
In the above, the fitting hollow portion (10) is formed on the lower main shaft (3), but it may be formed on the hanging shaft (9) side.

An upper disk (19) having a tapered peripheral surface tapered upward is fixed to the upper main shaft (2), and a lower taper (3) is tapered downward to the lower main shaft (3). A lower disk (20) with a fryer having a peripheral surface is fixed, and a pair of right and left flyers (21) is
(22) has been stopped. Of the two flyers (21) and (22), one flyer (22) exists on the left and right balance and is not actually used.

The cradle (1) has front and rear vertical wings (1a).
The horizontal shaft supporting portion (23) provided in a penetrating manner on both vertical wings (1a), the base end of the rotating shaft (24) is rotatably supported, so that the rotating shaft ( 24) Cradle (1)
Projecting forward. The central cylindrical portion (26) of the linear supply bobbin (25) is fitted to the front and rear rotating shafts (24). The bobbin (25) is initially fully wound.

The base end of the upper main shaft (2) is rotatably supported by a vertical shaft support (27) provided on the upper part of the machine frame (8), so that the upper main shaft (2) projects downward. ing. Upper spindle
In (2), there is an upper guide roller (28) that guides the single stranded wire that has passed through the flyer (21) to the center through hole (not shown) of the upper spindle (2) to form a double stranded wire. It is attached to (2). Almost half of the upper guide roller (28) is fitted in a semicircular lateral hole (not shown) formed in the upper main shaft (2).

The lower spindle (3) protrudes upward because the base end of the lower spindle (3) is rotatably supported by a vertical shaft support (29) provided at the lower part of the machine frame (8). ing. Lower spindle
In (3), the two filaments (a1) and (a2) extended from the front and rear bobbins (25) pass through the center through hole (30) of the hanging shaft (9) of the cradle (1), A lower guide roller (31) for guiding the single twisted wire, which has been twisted once with the rotation of the flyer (21), to the flyer (21) is attached. Lower guide roller (31)
Has a vertically long hole (3
It is fitted into the hollow part (10) through 2).

The lower output shaft (3) is arranged alongside the lower shaft support (29).
The motor (35) from which 4) protrudes is fixed to the lower part of the machine casing (8). A drive pulley (36) is attached to the output shaft (34), and a driven pulley (37) is attached to the lower protruding lower part of the lower main shaft (3), and a belt (38) is attached to both pulleys (36) and (37). Has been hung.

Small diameter portions are provided in the upper and lower portions of the central shaft (6), and correspondingly, a hollow portion of the lower main shaft (3) is provided with an enlarged inner diameter portion. Bearings (39) and (40) are interposed between the enlarged portions. The flange-shaped support portion (12) has a through hole (41) and an eccentric shaft.
A small diameter portion is provided at a lower portion of (11), and a bearing (42) is interposed between the inner surface of the through hole (41) and the small diameter portion. The flyer mounting lower disk (20) has an eccentric shaft (11) penetrating therethrough and a through hole (44) for mounting the upper support member (43) therethrough. The upper support member (43) has a short cylindrical shape with an upper lid, and is fixed by being screwed into a female screw portion provided at the lower end of the through hole (44) with a male screw portion provided in a downwardly projecting shape. Have been A small-diameter portion is provided at the upper portion of the eccentric shaft (11), and an inner-diameter enlarged portion is provided at the upper portion of the short cylindrical upper support member (43), and a bearing (45) is provided between the small-diameter portion and the inner-diameter enlarged portion. Is interposed. A small diameter part is provided at the lower part of the hanging shaft (9), and a hollow part (1
(0) is provided with an enlarged inner diameter portion at the upper end, and a bearing (46) is interposed between the small diameter portion and the enlarged inner diameter portion, and the hollow portion is provided.
The upper end opening of (10) is closed with a lid (47).

When the motor (35) is operated, its rotational force is applied to the drive pulley (36) of the output shaft (34), the belt (38), and the lower main shaft.
It is transmitted to the lower spindle (3) via the driven pulley (37) of (3). As a result, the flyer (21) and the upper main shaft (2) rotate, and the filaments (a1) and (a2) drawn out from the two bobbins (25) are twisted into a two-fold twisted wire, and a pair twisted wire (b1 ) Is obtained.

At this time, the lower end (6b) of the central shaft (6) penetrating through the hollow portion (5) of the lower main shaft (3) has a lower main shaft (6b).
(3) is projected downward and fixed to the lower part of the machine frame (8) via the mounting member (7), and the lower spindle (3) is centered on the center axis (6).
, So that it is kept stationary because it is rotatably fitted to the. The hanging shaft (9) of the cradle (1) is also the lower spindle (3).
A hollow part (10) for fitting is formed at the upper end of the lower spindle (3).
Since (3a) is rotatably fitted to the lower part of the hanging shaft (9), the stationary state is maintained. On the other hand, an eccentric shaft arranged on the upper side of the lower main shaft (3) on the opening side of the lateral hole (4) and rotatably attached to a flange-shaped support portion (12) provided on the lower main shaft (3). (11) revolves with the rotation of the lower main shaft (3), but the first pulley (13) is attached to the upper end (6a) of the center shaft (6), and the lower end (11a) of the eccentric shaft (11). ), The second pulley (14) is mounted on the eccentric shaft (11).
A third pulley (15) is mounted on the upper end (11b) of the first pulley, and a fourth pulley (16) is mounted on the upper part of the hanging shaft (9).
(13) and the lower belt (17) on the second pulley (14), and the third pulley (1).
Since the upper belt (18) is hung on the fifth pulley (4) and the fourth pulley (16), the cradle's hanging shaft (9) and, consequently, the cradle (9) despite the rotation of the upper and lower main shafts (2) and (3). 1)
Is always tensioned in the direction of the eccentric shaft (11). Therefore, the cradle does not run out during the operation of the twisting machine.

As shown in FIGS. 10 to 14, the filament supply device (S) includes a filament supply bobbin (25) and a tension adjusting device for adjusting the tension of the filament fed out from the bobbin (25). A dancer (46), a motor (64) for forcibly rotating the bobbin (25) via a hysteresis clutch (47), which is one type of electromagnetic clutch, and an inclination angle (θ) of the dancer (46) are detected. A thyristor-type AC power regulator (48) for increasing the power applied to the hysteresis clutch (47) as the inclination angle (θ) increases;
When (46) is vertical, the pair of friction surfaces of the clutch (47) are separated, and the contact pressure between the pair of friction surfaces increases as the inclination angle (θ) of the dancer (46) increases. However, as shown in FIG. 8, the filament supply device (S) exists symmetrically in the front-rear pair. Since both are the same, the front side filament supply device (S) will be described below.

The dancer (46) is a square bar having a dancer roller (49) at the upper end via a horizontal shaft (63).
Near the center line on the front of the cradle (1),
A horizontal shaft supporting portion (50) is provided at a position slightly above and in line with (24), and a dancer fulcrum shaft (51) is supported in a penetrating and rotatable manner. A vertical rectangular tubular dancer support member (52) is attached to the front end of the dancer fulcrum shaft (51). The dancer (46) is provided with a number of screw holes (53) at predetermined intervals in the length direction. Three horizontal through holes (55) for set screws (54) are formed in the front wall of the vertical rectangular tubular dancer support member (52) at the same interval between the screw holes (53). The dancer (46) is passed through the vertical through-hole of the support member (52), and the three screw holes (53) and the three horizontal through-holes (55) are aligned at appropriate positions of its length. , Set screw (54) through horizontal through hole (55) and screw hole (53)
Is screwed into the fulcrum shaft (51). At this time, the position of the upper guide surface of the dancer roller (49) is located diagonally outside the upper end of the left and right vertical wings (1a) of the cradle (1), and the line (a1) extended from the bobbin (25) Is adjusted to be slightly above the upper end guide surface of the direction changing guide roller (56) for guiding the roller from the upward direction toward the center of the cradle (1). A weight (57) is attached to the lower end of the dancer (46) so that the tension is applied to the dancer (46) or, if the tension is very small, the dancer (46) can be maintained in a vertical state. Has become.

A horizontal rectangular window (58) is opened in the cradle (1) from the position corresponding to the dancer fulcrum shaft (51) to the outside and lateral direction. In the lateral position, a lower vertical portion (59a) fixed to the front lower edge of the window (58), a middle horizontal portion (59b) penetrating the window (58) from front to rear, and a power regulator ( A mounting bracket (59) having an upper vertical portion (59c) to which the front surface of the (48) is fixed is disposed, and a power regulator (48) is attached to the mounting bracket (59) in a forward direction. A small gear (61) is mounted on the front projection in the window (58). The rear end of the dancer fulcrum shaft (51) protrudes into the window (58), and the large gear (62) meshing with the small gear (61) is attached to this. When the dancer (46) is tilted, the large gear (62) and the small gear (61) rotate in succession, and the rotating shaft (60) of the power regulator (48) rotates, and the dancer (4)
6) The inclination angle (θ) is detected.

Below the window (58), a larger horizontal rectangular window (65) is opened in the cradle (1), and its left side is closed by a horizontal rectangular lid (66). On the back side of the lid (66), near the center line of the cradle (1), a hat-shaped motor mounting bracket (67) is arranged and fixed. Mounting bracket
A motor (64) is mounted on the right side of (67) to the left, and its output shaft (68) protrudes into the window (65) through a through hole formed in the mounting bracket (67), and is driven by this. A pulley (69) is attached. The hysteresis clutch (47) is arranged and fixed on the front side of the lid (66) at a position slightly outside the motor (64), and its right-projecting first shaft (70) has a window (6).
5), to which a first pulley (71) is attached. Then, a belt is attached to the driving pulley (69) and the first pulley (71).
(72) is hung. Hysteresis clutch (4
A second pulley (74) is attached to the left-projecting second shaft (73) of (7), and a belt (75) is attached to this and a large driven pulley (75) attached to the rotating shaft (24) of the bobbin (25). 76) is hung. A carrier pin (77) is provided at the eccentric position of the driven pulley (75) so as to protrude leftward, and the carrier pin (77) is connected to the bobbin (2).
The driven pulley is inserted into the hole (78) made in the right flange (25a) of the pair of flanges in (5).
(75) and the bobbin (25) rotate integrally. dancer
(46) involves dancer restoring means for restoring the dancer (46) to a vertical state when the dancer (46) is inclined. This will be described below.

The driven pulley (75) is located between the right flange (25a) of the bobbin (25) and the horizontal shaft support (23). (79) is attached integrally with the above, and a brake band (80) is applied to the rotating wheel (79) in a horizontal U shape. A bolt (81) is attached to the lower horizontal end (80a) of the brake band (80), and a through hole is drilled in a fixing bracket (82) provided on the front of the cradle (1). A bolt (81) is passed through the fixing bracket (82), and is fixed from both sides of the fixing bracket (82) by an adjustment nut (83) and a fixing nut (84).
The friction state of the brake band (80) with respect to is adjustable. Lower horizontal edge of the brake band (80) (8
0b) has a spring mounting piece (85).
And an upper spring mounting bracket (86) provided in a horizontal position in front of the fulcrum of the dancer (46), and a compression coil spring (87).
Has been stopped.

At a position slightly below the fulcrum of the dancer (46), a lower spring mounting bracket (88) is provided horizontally to the left, and the cradle opposes this and is located below the spring mounting piece (85).
A fixing bracket (89) is provided on the front surface of (1), a bolt (90) having a spring mounting hole at the tip is penetrated through a through hole formed in the fixing bracket (89), and a fixing nut is provided from both sides of the fixing bracket (89). A compression coil spring (93) is fixedly secured to the bolt (90) and the lower spring mounting bracket (88) while being fixed so as to be adjustable by a nut (91) and an adjusting nut (92).

The line (a1) extended from the bobbin (25) is
Direction change guide roller (56) and dancer roller (4
It is pulled downward through 9). At this time, the extended line (a
If the tension applied to 1) is large, the dancer (46) tilts greatly, and if the tension is low, it tilts small. When tension is applied to the dancer (46) or when it is very small, the hysteresis clutch (47) is disengaged because the dancer (46) can be kept vertical. Therefore, the bobbin (25) rotates on its own axis by the pulling force of the bobbin (25) on the filament (a1), and the filament (a1) is fed. By the way, the bobbin (25) has a large gravity when fully loaded,
The tension applied to the extended line (a1) increases, and the dancer
Although the inclination angle (θ) of (46) increases, the tension decreases as the filament (a1) is extended, and the inclination angle (θ) decreases. In addition, the tension applied to the pay-out filament (a1) changes depending on the winding condition of the filament (a1) around the bobbin (25), and the inclination angle (θ) of the dancer (46) also changes accordingly. The power regulator (48) detects the inclination angle (θ) of the dancer (46), and as the inclination angle (θ) increases,
Since the electric power applied to the hysteresis clutch (47) is increased, the contact pressure between the pair of friction surfaces increases as the inclination angle (θ) of the dancer (46) increases. Therefore, when the inclination angle (θ) of the dancer (46) is large, the rotation speed of the bobbin (25) increases, and when the inclination angle (θ) of the dancer (46) is small, the rotation speed of the bobbin (25) decreases. It slows down and weakens that force in response to the tension applied to the pay-out line (a1) and attempts to return the dancer (46) to vertical. Dancer restoring means assists this effect. as a result,
Even if the filament (a1) is extremely thin, there is no risk of disconnection. When the rotating wheel (79) is rotating, the brake band (80) is slipping on the peripheral surface thereof.

[0030]

According to the apparatus for improving the twist pitch of a twisted pair wire according to the present invention, it is possible to manufacture a communication cable having no problem in electrical characteristics.

[Brief description of the drawings]

FIG. 1 is a side view of an entire twist pitch accuracy improving apparatus for a twisted pair wire according to the present invention.

FIG. 2 is a plan view of the apparatus of FIG. 1 from which the twister and the dispersion plate are omitted.

FIG. 3 is an enlarged side view of a take-off means.

FIG. 4 is a plan view of the take-off means of FIG. 3;

FIG. 5 is an enlarged sectional view taken along line VV of FIG. 3;

FIG. 6 is an enlarged side view showing a part of the driven endless belt.

FIG. 7 is a sectional view taken along line VII-VII in FIG. 6;

FIG. 8 is an overall side view of the supply side twisting machine.

FIG. 9 is an enlarged vertical sectional view of a part of the steady rest device of the cradle.

FIG. 10 is an enlarged front view of a portion of a filament supply device.

FIG. 11 is a sectional view taken along the line XI-XI in FIG. 10;

FIG. 12 is a sectional view taken along line XII-XII in FIG. 10;

FIG. 13 is an enlarged front view of a dancer and a power regulator.

FIG. 14 is a sectional view taken along the line XIV-XIV in FIG. 13;

[Explanation of symbols]

(101): Nameratomeso (102): driven wheel (103): driven endless belts (103a) forward concave arcuate portion (a1) (a2): striatum (a1) (a2) (a3) (a4 ): Pair twisted wire (A1) (A2) (A3) (A4): Supply side twister (B): Twist of winding side twister (C): Take-up means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B21F 23/00 B21F 7/00 H01B 13/04

Claims (1)

(57) [Claims] 1. A plurality of feed-side twisting machines which twist two wires to form a pair twisted wire, and a plurality of feed-side twisting machines in front of the plurality of feed-side twisting machines.
A take-up means for taking a plurality of paired twisted wires in parallel between the twisted pair of one winding side twisting machine which is arranged and twists a plurality of paired twisted wires unwound therefrom to form a product twisted wire. Is arranged, and the take-off means has a non-slip layer on the peripheral surface and the second half so that the parallel pair of twisted wires is pulled.
A drive wheel which is along the circumference, has a forward concave arcuate portion which is along the half <br/> contact from the outside to the pair twisted wire after driving wheels and the power of the drive wheels via the pair twisted wire Device for improving the twisting pitch of a pair of twisted wires consisting of a driven endless belt to which power is transmitted.