CA1116497A - Wire take-up/pay-off mechanism - Google Patents
Wire take-up/pay-off mechanismInfo
- Publication number
- CA1116497A CA1116497A CA000371550A CA371550A CA1116497A CA 1116497 A CA1116497 A CA 1116497A CA 000371550 A CA000371550 A CA 000371550A CA 371550 A CA371550 A CA 371550A CA 1116497 A CA1116497 A CA 1116497A
- Authority
- CA
- Canada
- Prior art keywords
- spool
- clutch
- output shaft
- shaft
- retaining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 31
- 238000005096 rolling process Methods 0.000 claims 1
- 230000000875 corresponding effect Effects 0.000 abstract 1
- 241000842962 Apoda limacodes Species 0.000 description 11
- 238000000137 annealing Methods 0.000 description 3
- 238000010010 raising Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- Ropes Or Cables (AREA)
Abstract
WIRE TAKE-UP/PAY-OFF MECHANISM
ABSTRACT
A machine for processing wire includes a take-up/
pay-off mechanism for a spool which has a coaxial spool shaft.
The mechanism comprises an output shaft, means supporting the spool with the spool shaft coaxially aligned with the output shaft, a manually operated dog clutch normally biased toward engagement for drivingly connecting the spool shaft to the out-put shaft, a clutch lever for moving the clutch to a disengaged position in opposition to the biasing force, and a detent for releasably retaining the clutch lever in a position correspond-ing to the disengaged position of the clutch.
ABSTRACT
A machine for processing wire includes a take-up/
pay-off mechanism for a spool which has a coaxial spool shaft.
The mechanism comprises an output shaft, means supporting the spool with the spool shaft coaxially aligned with the output shaft, a manually operated dog clutch normally biased toward engagement for drivingly connecting the spool shaft to the out-put shaft, a clutch lever for moving the clutch to a disengaged position in opposition to the biasing force, and a detent for releasably retaining the clutch lever in a position correspond-ing to the disengaged position of the clutch.
Description
This invention relates in general to wire pro-cessin~ apparatus and deals more particularly with an improved wire accumulator tower particularly adapted for use in a machine for processing a continuous strand of wire. ~lany wire processing operations require that wire mo~e continuously through processing equipment at a re-latively constant rate to assure uniform processing. In a process for annealing wire, for example, it is essential that the wire to be processed move continuously through the annealing furnace at a constant rate to assure uniform heat treating. Since wïre is usually supplied to such processing equipment from a pay-off spool, some arrangement must be provided to temporarily supply wire to and receive wire from the processing equipment during spool changes, so that such spool changes may be accomplished without shutting down the processing equipment. The present in-vention is concerned with improvements in apparatus of the aforedescribed general type.
In accordance with the present invention a wire accumulator tower comprises a vertically elongated frame, a pair of capstans supported for rotation on the frame to receive portions of a strand wire looped there around.
The capstans include a first capstan supported for rotation about a horizontal axis and a second capstan supported above the first capstan for rotation about an axis parallel to and vertically spaced from the axis of the first capstan.
The capstans are driven in timed relation to each other.
The apparatus further includes a festoon assembly which has a first and second set of sheaves. The sheaves in each set are supported on the frame for coaxially free rotation ,' ~
., :
relative to each other. The first set of sheaves i5 supported for rotation about an axis below and generally parallel to the axes of the capstans. The second set is supported on the frame above the first set. One of the sets is arranged for vertical movement relative to frame and toward and away from the other of the set. The ap-paratus may also include a pay-o~f/take-up spool assembly which includes means for receiving and positioning a spool in driving relation with an output shaft and a manu-ally operated dog clutch for establishing driving connec-tion between the spool and the output shaft.
In The Drawings:
Fig. 1 is a front elevational view of a wire feeding and accumulating apparatus embodying the present invention and which comprises a part of a wire processing machine.
Fig. 2 is ~ side elevational view of the machine of Fig. 1 shown partially in vertical section.
Fig. 3 is a somewhat enlarged fragmentary side elevational view of the upper capstan and the upper sheaves, parts of the capstan and sheaves being shown broken away to reveal details of the structure.
Fig. 4 is a somewhat enlarged fragmentary front elevational view of the apparatus shown in Fig. 1.
Fig. 5 is a somewhat schematic side elevational view of the spool positioning, receiving and retain~ng mechanism.
Fig. 6 is a fragmentary sectional view taken generally along the lines 6-6 of Fig. 2.
Fiq. 7 is a somewhat enlarged fragmentary eleva-tional view of the clutch lever and detent mechanism shown partially in vertical section.
Fig. 8 is a somewhat schematic elevational view of a part of the festoon assembly.
Turning now to the drawinss, and referring first particularly to Figs. 1 and 2, a wire accumulator tower embodying the present invention and indicated generally by the reference numeral 10 comprises a part of an ap-paratus for processing a continuous strand of wire W. The illustrated tower 10 may be arranged to either pay-off or take-up wire but, as iIlustrated, the tower 10 is arranged to pay-off a continuous strand of wire W and feed it into an annealing furnace 12 which comprises a part of the processing apparatus. Another accumulator tower similar to the tower 10, but not shown, may be located at the discharge end of the fur-nace 12 to function as a take-up mechanism for receiving wire W from the furnace 12.
The illustrated apparatus 10 generally comprises a vertically elongated frame, indicated generally at 14, ZO which supports a pair of capstans designated by the numerals 16, 16' and festoon assembly indicated generally at 18.
The apparatus further includes a take-up/pay-off spool mechanism indicated generally at 20. However, since the mechanism 20, as shown, is arranged to operate in a pay-off mode for convenience of description, it will be hereinafter referred to as the pay-off spool mechanism. The capstans 16, 16', the festoon assembly 18 and the pay-off spool mechanism 20 are arranged in vertical relation to each other on the frame 14, substantially as shown.
Considering now the apparatus 10 in further detail, the frame 14 has a base 22 which includes hollow '7 sidewalls 2~, 24 and which has openings at its opposite ends. A pair of elongated structural members 26, 26 and a pair of transversely spaced guide rods 28, 28 which extend upwardly from the base 22, form an intermediate part of the frame~ A generally rectangular bo~ shaped upper part 30 is supported by and above the intermediate part.
Each capstan 16, 16' is generally cylindrical and has a series of coaxial annular wire receiving grooves 31, 31 which open to its peripheral surface. The cross sectional area of each groove is preferably substantially greater than the cross sectional area of the largest wire to be received therein. Each of the illustrated capstans is provided with five such grooves, however, the number of grooves may vary. The lower capstan 16 is keyed to a shaft 32 journaled on the frame upper part 30 for ro-tation about a horiæontal axis. The upper capstan 16' is keyed to another shaft 34 also journaled on the frame upper part 30 for rotation about an axis parallel to and vertically spaced from the axis of the lower capstan 16.
A direct current motor 36 connected by a timing belt 38 to the upper shaft 34 drives the upper capstan 16', as best shown in Fig. 2. The lower capstan 16 is driven in timed relation with the upper capstan by another timing belt 40 connected between the shafts 32 and 34.
The festoon assembly 18 includes a set of ~lpper sheaves 42 and a set of lower sheaves 44. Each set in-cludes a plurality of individual sheaves ~6, 46 supported on a shaft for coaxial free rotation relative to each o~her. The sheaves 46, 46 which comprise the upper set are journaled adjacent the upper capstan 16' on an extending portion of the shaft 34. Each sheave 46 is supported by an individual ball bearing race carried by the shaft 34, as best shown in Fig. 3. The lower set 44 is supported in like manner below the upper set 42 and for coaxial free rotation relative to each other on a shaft 48 carried by a slide 50 slidably supported on the guide rods 28, 28. Thus, the lower set 44 is journaled for rotation about an axis parallel to the axes of the capstans 16, 16', and is further supported for vertical movement relative to the frame and generally toward and away from the upper set 42. A counter balancing mechanism (not shown) is provided for counter balancing the lower set 44 for smooth vertical movement relative to the frame and the upper set 42. A double acting air motor 52 is connected by pulleys and cables to the slide 50, substantially as shown in Fig. 2. Referring to Fig. 1 it will be noted that the axes of the capstans 16, 16 and the upper and lower sets 42 and 44 are disposed generally within a common vertical plane.
Referring now particularly to Figs. 4 and 5 the pay-off spool mechanism 20 includes an apparatus for re-ceiving and accurately positioning and retaining a spool, indicated at 54, in coaxially alignment with an OUtpllt shaft 56. The mechanism 20 further includes a manually operated clutch mechanism indicated generally at 58 for drivingly engaging the spool 54 with the output shaft 56.
Each spool 54 has an axle shaft which extends coaxially thereto and which is fitted with adaptor flanges 60 and 62 at i-ts opposite end. The adaptor 62 is formed with a '7 clutch part 64 at its outer end. Each shaft adaptor 60 and 62 also has flange 66 journaled at its out end for free rotation relative to its associated adaptor.
The spool receiving positioniny and retaining mechanism, indicated at 53, includes a pair o~ rails 68, 68 located within and extending ~rom the front to the rear of the base 22. Each rail 68 is mounted on and in-wardly of an associated side wall 24 and is downwardly and forwardiy inclined, as shown in Fig. 2, but prefer-ably not more than 2 1/2. The rails 68, 68 are trans-versely spaced to receive and engage the flanges 66, 66 on an associated spool 54. The positioning mechanism 53 further includes a handle operated link mechanism which is operative to receive and retain one spool in a ready position on the rails 68, 68 and at the rear of the base, and to release another previously positioned spool from the ready position and accurately position and retain it in a dri~e position in alignment with the output shaft 56. In Fig. 2 one spool 54' is shown in a ready position and another spool 54 is shown in a drive position.
The spool receiving positioning and retaining mechanism 53 includes a link mechanism indicated generally at 70 in Fig. 5 which comprises two sets of linkages 72, 72 located within the base 22 at opposite sides thereof for engaging the flanges 66, 66 on an associated spool 54. A
typical linkage 72, shown in Fig. 5, includes a crank 74 journaled on an associated side wall 24 and connected to one end of a handle or crossbar 76. Each clamp is connected by a link 78 to another crank 80 which has a stop member 82 mounted thereon for engaging an associated flange 66.
The stop member carries a spool stop cam 84 which is xadially adjustable relative to the crank 80 by means of a fastener and a slot, such as shown in Fig. 5. The positioning apparatus further includes a pair of spring loaded positioning cams 86 (one shown) which are moùnted at opposite sides of the base for respectively engaging the flanges 66, 66. Each cam 86 has an arcuate clamping surface 87 which has a center of curvature 89 eccentric to the pivotal center of the cam to provide positive clamping action. A pair of positioning latches 88, 88 (one shown) are located inwardly of the base 22 at op-posite sides thereof for engaging the flanges on another spool 54'. Each positioning latch is connected to an associated crank 74 by a link 90 substantially as shown in Fig. 5.
The output shaft 56 is driven by a timing belt 92 connected to a D.C. motor 94 mounted in the base 22.
A spring loaded clutch part 96 associated with the output shaft 56 and drivingly engaged therewith is normally biased toward a condition of interlocking engagement with the clutch part 64 by a clutch spring 98, as shown in Fig. 6.
The clutch is operated by a clutch lever 100 located at the front end of machine and mounted on one end of a rear-wardly extending clutch rod 102 which is journaled on one of the sidewalls 24. A clutch cam assembly 104 mounted on the other end of the rod 102 carries a roller follower 106 for engaging a flange 108 on the inner side of the clutch part 96 when the clutch lever 100 is rotated in a clockwise direction from its position in Figs. 1 and 7.
The clutch cam assembly 104 urges the clutch part 96 out-wardly to a disenga~ed position relative to the clutch part 64 against the biasing force of the clutch spring 98. A spring detent mechanism indicated generally at 110 and shown in Fig. 7 releasably retains the clutch lever in either of two positions corresponding to engaged and disengaged clutch conditions.
The spool mechanism 20 also includes a travers-ing device indicated generally at 112 for controlling the lay of a wire strand on the spool when the apparatus 10 is used for spooling wire. The traversing mechanism 112 is of a well known, commercially available type and in-cludes ball mechanism for engagement with a smooth rotat-ing shaft 114 which is driven by the motor 94 and in timed relation with the spool 54.
As previously noted the apparatus 10 is parti-cularly adapted to pay-off a continuous strand of wire W.
When a spool runs out the free end of the wire is clamped or otherwise secured by means (not shown3. Thereafter, the capstans 16, 16 continue to receive wire from the festoon assembly 18. The empty spool is released by rais-ing the handle 76 which allows the empty spool to roll down the inclined rails 68, 68 in and out of the front end of the machine. Raising the handle allows another spool which is in the ready or full line position shown in Fig. 5 to move to its broken line position of Fig. 5 wherein it is held by the positioning latches 88, 88 which have the capability of holding the spool in either of two positions indicated by full and broken lines in Fig. 5.
When the handle 76 is again lowered the spool at the ready position is released by the hooked ends of the latches 88, 88 and rolls down the inclined rails 68, 68 past the spring loaded positioning cams 86, 86 to a position in alignment with the output shaft 56 wherein the flanges 66, 66 are arrested by engagement with the stop cams 84, 84. The end of the new spool may then be knotted or otherwise secured to the free end of the strand W which is clamped, as previously noted.
While the spool is being changed wire is con-tinuously fed from the festoon assembly 18 which causes the lower set of sheaves 44 to move upwardly. Tension on the wire within the,festoon assembly 18 may be adjusted by adjusting the air motor 52. The supply of wire in the festoon is sufficient to allow adequate time to accomplish the spool change. After the end of the runout spool has been connected to the new spool the clamped end of the strand W is released. Thereafter, wire is again accumulated in the festoon assembly 18. A sensing device is provided for over speeding the pay-off spool to allow wire to ac-cumulate in the festoon assembly. In the present apparatus the sensing device shown in Fig. 8 comprises an elongated rod 116 which has spiral portions 118, 118 and a follower 120 which travels with the lower set of sheaves 44O En-gagement of the follower 120 with one of the spiral end portions of the rod causes the rod 116 to twist and operate a potentiometer 122 associated therewith which controls the speed of the D.C. motor 94.
In accordance with the present invention a wire accumulator tower comprises a vertically elongated frame, a pair of capstans supported for rotation on the frame to receive portions of a strand wire looped there around.
The capstans include a first capstan supported for rotation about a horizontal axis and a second capstan supported above the first capstan for rotation about an axis parallel to and vertically spaced from the axis of the first capstan.
The capstans are driven in timed relation to each other.
The apparatus further includes a festoon assembly which has a first and second set of sheaves. The sheaves in each set are supported on the frame for coaxially free rotation ,' ~
., :
relative to each other. The first set of sheaves i5 supported for rotation about an axis below and generally parallel to the axes of the capstans. The second set is supported on the frame above the first set. One of the sets is arranged for vertical movement relative to frame and toward and away from the other of the set. The ap-paratus may also include a pay-o~f/take-up spool assembly which includes means for receiving and positioning a spool in driving relation with an output shaft and a manu-ally operated dog clutch for establishing driving connec-tion between the spool and the output shaft.
In The Drawings:
Fig. 1 is a front elevational view of a wire feeding and accumulating apparatus embodying the present invention and which comprises a part of a wire processing machine.
Fig. 2 is ~ side elevational view of the machine of Fig. 1 shown partially in vertical section.
Fig. 3 is a somewhat enlarged fragmentary side elevational view of the upper capstan and the upper sheaves, parts of the capstan and sheaves being shown broken away to reveal details of the structure.
Fig. 4 is a somewhat enlarged fragmentary front elevational view of the apparatus shown in Fig. 1.
Fig. 5 is a somewhat schematic side elevational view of the spool positioning, receiving and retain~ng mechanism.
Fig. 6 is a fragmentary sectional view taken generally along the lines 6-6 of Fig. 2.
Fiq. 7 is a somewhat enlarged fragmentary eleva-tional view of the clutch lever and detent mechanism shown partially in vertical section.
Fig. 8 is a somewhat schematic elevational view of a part of the festoon assembly.
Turning now to the drawinss, and referring first particularly to Figs. 1 and 2, a wire accumulator tower embodying the present invention and indicated generally by the reference numeral 10 comprises a part of an ap-paratus for processing a continuous strand of wire W. The illustrated tower 10 may be arranged to either pay-off or take-up wire but, as iIlustrated, the tower 10 is arranged to pay-off a continuous strand of wire W and feed it into an annealing furnace 12 which comprises a part of the processing apparatus. Another accumulator tower similar to the tower 10, but not shown, may be located at the discharge end of the fur-nace 12 to function as a take-up mechanism for receiving wire W from the furnace 12.
The illustrated apparatus 10 generally comprises a vertically elongated frame, indicated generally at 14, ZO which supports a pair of capstans designated by the numerals 16, 16' and festoon assembly indicated generally at 18.
The apparatus further includes a take-up/pay-off spool mechanism indicated generally at 20. However, since the mechanism 20, as shown, is arranged to operate in a pay-off mode for convenience of description, it will be hereinafter referred to as the pay-off spool mechanism. The capstans 16, 16', the festoon assembly 18 and the pay-off spool mechanism 20 are arranged in vertical relation to each other on the frame 14, substantially as shown.
Considering now the apparatus 10 in further detail, the frame 14 has a base 22 which includes hollow '7 sidewalls 2~, 24 and which has openings at its opposite ends. A pair of elongated structural members 26, 26 and a pair of transversely spaced guide rods 28, 28 which extend upwardly from the base 22, form an intermediate part of the frame~ A generally rectangular bo~ shaped upper part 30 is supported by and above the intermediate part.
Each capstan 16, 16' is generally cylindrical and has a series of coaxial annular wire receiving grooves 31, 31 which open to its peripheral surface. The cross sectional area of each groove is preferably substantially greater than the cross sectional area of the largest wire to be received therein. Each of the illustrated capstans is provided with five such grooves, however, the number of grooves may vary. The lower capstan 16 is keyed to a shaft 32 journaled on the frame upper part 30 for ro-tation about a horiæontal axis. The upper capstan 16' is keyed to another shaft 34 also journaled on the frame upper part 30 for rotation about an axis parallel to and vertically spaced from the axis of the lower capstan 16.
A direct current motor 36 connected by a timing belt 38 to the upper shaft 34 drives the upper capstan 16', as best shown in Fig. 2. The lower capstan 16 is driven in timed relation with the upper capstan by another timing belt 40 connected between the shafts 32 and 34.
The festoon assembly 18 includes a set of ~lpper sheaves 42 and a set of lower sheaves 44. Each set in-cludes a plurality of individual sheaves ~6, 46 supported on a shaft for coaxial free rotation relative to each o~her. The sheaves 46, 46 which comprise the upper set are journaled adjacent the upper capstan 16' on an extending portion of the shaft 34. Each sheave 46 is supported by an individual ball bearing race carried by the shaft 34, as best shown in Fig. 3. The lower set 44 is supported in like manner below the upper set 42 and for coaxial free rotation relative to each other on a shaft 48 carried by a slide 50 slidably supported on the guide rods 28, 28. Thus, the lower set 44 is journaled for rotation about an axis parallel to the axes of the capstans 16, 16', and is further supported for vertical movement relative to the frame and generally toward and away from the upper set 42. A counter balancing mechanism (not shown) is provided for counter balancing the lower set 44 for smooth vertical movement relative to the frame and the upper set 42. A double acting air motor 52 is connected by pulleys and cables to the slide 50, substantially as shown in Fig. 2. Referring to Fig. 1 it will be noted that the axes of the capstans 16, 16 and the upper and lower sets 42 and 44 are disposed generally within a common vertical plane.
Referring now particularly to Figs. 4 and 5 the pay-off spool mechanism 20 includes an apparatus for re-ceiving and accurately positioning and retaining a spool, indicated at 54, in coaxially alignment with an OUtpllt shaft 56. The mechanism 20 further includes a manually operated clutch mechanism indicated generally at 58 for drivingly engaging the spool 54 with the output shaft 56.
Each spool 54 has an axle shaft which extends coaxially thereto and which is fitted with adaptor flanges 60 and 62 at i-ts opposite end. The adaptor 62 is formed with a '7 clutch part 64 at its outer end. Each shaft adaptor 60 and 62 also has flange 66 journaled at its out end for free rotation relative to its associated adaptor.
The spool receiving positioniny and retaining mechanism, indicated at 53, includes a pair o~ rails 68, 68 located within and extending ~rom the front to the rear of the base 22. Each rail 68 is mounted on and in-wardly of an associated side wall 24 and is downwardly and forwardiy inclined, as shown in Fig. 2, but prefer-ably not more than 2 1/2. The rails 68, 68 are trans-versely spaced to receive and engage the flanges 66, 66 on an associated spool 54. The positioning mechanism 53 further includes a handle operated link mechanism which is operative to receive and retain one spool in a ready position on the rails 68, 68 and at the rear of the base, and to release another previously positioned spool from the ready position and accurately position and retain it in a dri~e position in alignment with the output shaft 56. In Fig. 2 one spool 54' is shown in a ready position and another spool 54 is shown in a drive position.
The spool receiving positioning and retaining mechanism 53 includes a link mechanism indicated generally at 70 in Fig. 5 which comprises two sets of linkages 72, 72 located within the base 22 at opposite sides thereof for engaging the flanges 66, 66 on an associated spool 54. A
typical linkage 72, shown in Fig. 5, includes a crank 74 journaled on an associated side wall 24 and connected to one end of a handle or crossbar 76. Each clamp is connected by a link 78 to another crank 80 which has a stop member 82 mounted thereon for engaging an associated flange 66.
The stop member carries a spool stop cam 84 which is xadially adjustable relative to the crank 80 by means of a fastener and a slot, such as shown in Fig. 5. The positioning apparatus further includes a pair of spring loaded positioning cams 86 (one shown) which are moùnted at opposite sides of the base for respectively engaging the flanges 66, 66. Each cam 86 has an arcuate clamping surface 87 which has a center of curvature 89 eccentric to the pivotal center of the cam to provide positive clamping action. A pair of positioning latches 88, 88 (one shown) are located inwardly of the base 22 at op-posite sides thereof for engaging the flanges on another spool 54'. Each positioning latch is connected to an associated crank 74 by a link 90 substantially as shown in Fig. 5.
The output shaft 56 is driven by a timing belt 92 connected to a D.C. motor 94 mounted in the base 22.
A spring loaded clutch part 96 associated with the output shaft 56 and drivingly engaged therewith is normally biased toward a condition of interlocking engagement with the clutch part 64 by a clutch spring 98, as shown in Fig. 6.
The clutch is operated by a clutch lever 100 located at the front end of machine and mounted on one end of a rear-wardly extending clutch rod 102 which is journaled on one of the sidewalls 24. A clutch cam assembly 104 mounted on the other end of the rod 102 carries a roller follower 106 for engaging a flange 108 on the inner side of the clutch part 96 when the clutch lever 100 is rotated in a clockwise direction from its position in Figs. 1 and 7.
The clutch cam assembly 104 urges the clutch part 96 out-wardly to a disenga~ed position relative to the clutch part 64 against the biasing force of the clutch spring 98. A spring detent mechanism indicated generally at 110 and shown in Fig. 7 releasably retains the clutch lever in either of two positions corresponding to engaged and disengaged clutch conditions.
The spool mechanism 20 also includes a travers-ing device indicated generally at 112 for controlling the lay of a wire strand on the spool when the apparatus 10 is used for spooling wire. The traversing mechanism 112 is of a well known, commercially available type and in-cludes ball mechanism for engagement with a smooth rotat-ing shaft 114 which is driven by the motor 94 and in timed relation with the spool 54.
As previously noted the apparatus 10 is parti-cularly adapted to pay-off a continuous strand of wire W.
When a spool runs out the free end of the wire is clamped or otherwise secured by means (not shown3. Thereafter, the capstans 16, 16 continue to receive wire from the festoon assembly 18. The empty spool is released by rais-ing the handle 76 which allows the empty spool to roll down the inclined rails 68, 68 in and out of the front end of the machine. Raising the handle allows another spool which is in the ready or full line position shown in Fig. 5 to move to its broken line position of Fig. 5 wherein it is held by the positioning latches 88, 88 which have the capability of holding the spool in either of two positions indicated by full and broken lines in Fig. 5.
When the handle 76 is again lowered the spool at the ready position is released by the hooked ends of the latches 88, 88 and rolls down the inclined rails 68, 68 past the spring loaded positioning cams 86, 86 to a position in alignment with the output shaft 56 wherein the flanges 66, 66 are arrested by engagement with the stop cams 84, 84. The end of the new spool may then be knotted or otherwise secured to the free end of the strand W which is clamped, as previously noted.
While the spool is being changed wire is con-tinuously fed from the festoon assembly 18 which causes the lower set of sheaves 44 to move upwardly. Tension on the wire within the,festoon assembly 18 may be adjusted by adjusting the air motor 52. The supply of wire in the festoon is sufficient to allow adequate time to accomplish the spool change. After the end of the runout spool has been connected to the new spool the clamped end of the strand W is released. Thereafter, wire is again accumulated in the festoon assembly 18. A sensing device is provided for over speeding the pay-off spool to allow wire to ac-cumulate in the festoon assembly. In the present apparatus the sensing device shown in Fig. 8 comprises an elongated rod 116 which has spiral portions 118, 118 and a follower 120 which travels with the lower set of sheaves 44O En-gagement of the follower 120 with one of the spiral end portions of the rod causes the rod 116 to twist and operate a potentiometer 122 associated therewith which controls the speed of the D.C. motor 94.
Claims (7)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In a machine for processing wire a take-up/
pay-off mechanism for a spool having a coaxial spool shaft and comprising an output shaft, means for supporting the spool with the spool shaft coaxially aligned with the output shaft, and a manually operated dog clutch for drivingly connecting said spool shaft to said output shaft and including means normally biasing said clutch toward driving engagement, a clutch lever for moving said clutch to a disengaged position in opposition to said bias-ing means, and detent means for releasably retaining said clutch lever in a position corresponding to said disengaged position.
pay-off mechanism for a spool having a coaxial spool shaft and comprising an output shaft, means for supporting the spool with the spool shaft coaxially aligned with the output shaft, and a manually operated dog clutch for drivingly connecting said spool shaft to said output shaft and including means normally biasing said clutch toward driving engagement, a clutch lever for moving said clutch to a disengaged position in opposition to said bias-ing means, and detent means for releasably retaining said clutch lever in a position corresponding to said disengaged position.
2. The combination as set forth in claim 1 wherein said supporting means is further characterized as means for re-ceiving positioning and retaining the spool with the spool shaft coaxially aligned with said output shaft.
3. The combination as set forth in claim 2 wherein the spool shaft has adaptor flanges at its opposite ends and said means for receiving positioning and retaining the spool comprises a pair of parallel rails inclined downwardly toward said output shaft for receiving the adaptor flanges in rolling engagement thereon and a link mechanism movable between spool releasing and spool retaining positions and having stop cams disposed in the path of the flanges when said link mechanism is in its spool retaining position and positioning cams for clamp-ing the flanges in engagement with the s-top cams to retain the spool shaft in coaxial alignment with the output shaft when the link mechanism is in its spool retaining position.
4. The combination as set forth in claim 3 wherein said link mechanism includes a pair of positioning latches for engaging the adaptor flanges on another spool received on said rails, said positioning latches being operative to retain the other spool in one position on said rails when said link mech-anism is in its spool retaining position and to retain the other spool in another position on said rails when said link mechanism is in its releasing position.
5. The combination as set forth in claim 1 wherein said clutch includes a clutch part coaxially aligned with said output shaft and drivingly engaged therewith, said clutch part being axially movable relative to said output shaft, said bias-ing means normally urging said clutch part in an axial direction and to a position of interlocking engagement with an associated part of the spool.
6. The combination as set forth in claim 5 wherein said clutch part has an annular flange and said clutch lever includes a rotary cam engageable with said flange for moving said clutch part out of interlocking engagement with the associ-ated part of the spool when said clutch lever is moved to a position corresponding to said disengaged position.
7. The combination as set forth in claim 5 wherein said rotary cam and said clutch lever are supported for angular movement about an axis which extends in a transverse direction relative to the axis of the output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000371550A CA1116497A (en) | 1978-08-03 | 1981-02-23 | Wire take-up/pay-off mechanism |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US930,698 | 1978-08-03 | ||
| US05/930,698 US4186861A (en) | 1978-08-03 | 1978-08-03 | Wire accumulator tower |
| CA332,251A CA1110954A (en) | 1978-08-03 | 1979-07-20 | Wire accumulator tower |
| CA000371550A CA1116497A (en) | 1978-08-03 | 1981-02-23 | Wire take-up/pay-off mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1116497A true CA1116497A (en) | 1982-01-19 |
Family
ID=27166339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000371550A Expired CA1116497A (en) | 1978-08-03 | 1981-02-23 | Wire take-up/pay-off mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1116497A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109368411A (en) * | 2018-11-23 | 2019-02-22 | 国网江苏省电力有限公司宝应县供电分公司 | A kind of portable service tool |
-
1981
- 1981-02-23 CA CA000371550A patent/CA1116497A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109368411A (en) * | 2018-11-23 | 2019-02-22 | 国网江苏省电力有限公司宝应县供电分公司 | A kind of portable service tool |
| CN109368411B (en) * | 2018-11-23 | 2023-05-23 | 国网江苏省电力有限公司宝应县供电分公司 | Portable maintenance tool |
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