US3323330A - Flat bed rib knitting machines - Google Patents

Flat bed rib knitting machines Download PDF

Info

Publication number
US3323330A
US3323330A US391488A US39148864A US3323330A US 3323330 A US3323330 A US 3323330A US 391488 A US391488 A US 391488A US 39148864 A US39148864 A US 39148864A US 3323330 A US3323330 A US 3323330A
Authority
US
United States
Prior art keywords
knitting
valve
driven means
movement
driven
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 - Lifetime
Application number
US391488A
Other languages
English (en)
Inventor
Monk Brian Arthur
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MONK SUTTON IN ASHFIELD Ltd SA
S A Monk (sutton-In-Ashfield) Ltd
Original Assignee
MONK SUTTON IN ASHFIELD Ltd SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MONK SUTTON IN ASHFIELD Ltd SA filed Critical MONK SUTTON IN ASHFIELD Ltd SA
Application granted granted Critical
Publication of US3323330A publication Critical patent/US3323330A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B7/00—Flat-bed knitting machines with independently-movable needles
    • D04B7/02—Flat-bed knitting machines with independently-movable needles with one set of needles
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B7/00—Flat-bed knitting machines with independently-movable needles
    • D04B7/04—Flat-bed knitting machines with independently-movable needles with two sets of needles

Definitions

  • Carn boxes or slur cocks are provided to reciprocate lengthwise of the, or each, needle bed to actuate the needles and will hereinafter be referred to as the needle actuating means.
  • the needle actuating means are operated by electro-hydraulic means, the electro-hydraulic circuit including switch devices, operated via variable limit determining means, for controlling the movement, and the stroke, of the needle actuating means.
  • variable limit determining means comprise cam-actuated roller contacts mounted on convenient parts of the machine, e.g. the fashioning screw nut housings or the selvedge needle selection means, the positions of which are manually or automatically varied according to the knitting width required, the roller contacts being slidably mounted on operating rods which are angularly rotatable to actuate the switch devices which control hydraulic valves.
  • FIGURE 1a, 1b and 1c are front elevational view shOW- ing part of the control division incorporating the drive mechanism and parts of two associated knitting divisions.
  • FIGURE 2 is a half end elevation corresponding to FIGURE 1, lb, and 10,
  • FIGURE 3 is a hydraulic circuit layout diagram
  • FIGURE 4 is an electric circuit diagram
  • FIGURE 5 is a diagrammatic sectional view through a typical braking valve
  • FIGURE 6 is a diagrammatic sectional view through a typical pressure operated distributor valve, 1
  • FIGURE 7 is a diagrammatic sectionalview through a typical pilot valve
  • FIGURE 8 is a diagrammatic sectional view through a typical safety valve
  • FIGURE 9 is a diagrammatic sectional view through a typical bypass valve.
  • FIGURES l and 2 there is shown generally in FIGURES l and 2 the main support framework F of the knitting division of the machine, needle beds N arranged in adjacent knitting divisions, a cam box C associated with one of the needle beds N, driven means D by which the cam boxes C are reciprocated relative to the needle bed, a connecting bar B for coupling the driven means D with cam boxes C, and nut housing H normally used for positioning fashioning mechanisms (not shown) for fashioning the selvedges of the garment piece being knitted, said nut housing being mounted for lengthwise movement on L.H. and RH. fashioning screws S.
  • a cam plate 5 which may be formed in one or more ice sections and is fixedly secured to the driven means D, reciprocated and positioned by a conventional reversible hydraulic motor 6- (FIGURES 1c and 3) coupled thereto in a conventional manner to be described in more detail hereinafter, that effect reciprocation of the needle actuating means, e.g. cam boxes C for slur cocks, over the needle beds N.
  • the cam plate 5' is adapted, according to its direction of movement, to enter into engagement with either a roller 7 or a roller 8, the rollers being keyed to, but slidably mounted on, operating rods 9 and 10.
  • rollers 7, 8 form part of attachments which are fixed to the respective nut housings H of L.H. and RH. fashioning screws S, it being understood that the rollers 7, 8 with the nut housings H are moved lengthwise of the fashioning screws S according to the knitting width required.
  • angular rotation of the operating rod 9' is effective to actuate, via a linkage 13, a braking switch 14 which energises a solenoid 15 (FIGURES 3 and 4) and causes operation of a braking valve 16- (FIGURE 3) which, via a pressure reducing valve 17, directs fluid under pressure to a main slide valve 18, which is coupled directly to the motor 6, to slow down the speed of movement of the cam plate 5 and thus also of the needle actuating means C and the drive means D.
  • a braking switch 14 which energises a solenoid 15 (FIGURES 3 and 4) and causes operation of a braking valve 16- (FIGURE 3) which, via a pressure reducing valve 17, directs fluid under pressure to a main slide valve 18, which is coupled directly to the motor 6, to slow down the speed of movement of the cam plate 5 and thus also of the needle actuating means C and the drive means D.
  • Angular movement of the rod 9 is also effective to operate a change-over switch 19 (FIGURES 1b, 2 and 4) which operates to (FIGURES 3 and 4) de-energise a solenoid 20 controlling a pilot slide valve 21 (FIGURE 3) for effecting movement of the cam 5 and the needle actuating means C from left to right, and to energise a solenoid 22 (FIGURES 3 and 4) controlling a second pilot slide valve 23 (FIGURE 3) for causing return movement of the cam 5 and the needle actuating means C, Le. from right to left.
  • the cam plate 5 is of stepped formation to provide two operating faces 29 and 341 (FIGURE 1c), the face 29 serving to turn the rod 9 through a small angle to operate the braking switch 14, and the face 30 serving to turn the rod 9 through a greater angle to operate the reversing switch 19.
  • safety stop valve 32 is also common to both directions of movement.
  • a further switch 34 (FIGURE 4) is provided in the circuit, this switch being operable to energize the solenoid continually so that the braking valve 16 (FIGURE 3) is continually operated.
  • an overload valve (FIGURE 3) is provided in the hydraulic circuit.
  • a by-pass valve 36 (FIG- URE 3) is provided to short-circuit the pressure-fluid lines and to allow free circulation of the fluid.
  • switches 37, 38 and 39, are provided in the lines supplying current to the solenoids 20: and 22.
  • switches 37, 38 and 39, are provided in the lines supplying current to the solenoids 20: and 22.
  • switches 37, 38 or 39, 40 are opened during the stroke, but the actuating means continue to travel due to the fact that there is an alternative source of supply to the solenoid 20 from switch 33, and it is only when the switch 19 changes over at the end of the stroke that the actuating means C stop.
  • the switches 14 and 33 serve two purposes; firstly they serve to operate the braking valve 16 and secondly they provide an alternative current supply to the solenoids 20* and 22 when the switches 37, 38 or 39, 40 are opened to stop the needle actuating means at the end of a stroke.
  • the reversible motor 6 in driven, in the manner previously described, by fluid under pressure which enters through the pipe or the pipe 51 according to the direction in which the motor 6 is to rotate.
  • the motor 6 has a drive spindle 52 to which a sprocket 53 is fixed for rotation therewith.
  • the sprocket 53 drives, through a chain 54, a sprocket 55 mounted on a shaft 56.
  • the shaft 56 has secured thereto for rotation there- With a second sprocket 57 which drives an endless chain 58 which is passed over guide sprockets 59 and 60 and over a tension sprocket 61.
  • the driven means D is coupled to the chain 58 at 62 and is caused to reciprocate in the manner and at the speed dictated by the motor 6.
  • FIGURES 5 through 9 of the drawings it will be seen. that there are illustrated the specific details of the various conventional hydraulic valves which form parts of the hydraulic system of this invention, and which details of the hydraulic valves will now he described.
  • the braking valve 16 comprises a housing 63 having a port 64 which is connected to the main pressure line for receiving fluid under pressure therefrom, a port 65 leading to the reducing valve 17 and a port 66 which is connected to the tank or reservoir from which the supply of fluid for the hydraulic system is obtained.
  • a plunger 67 operated by the solenoid 15 is provided with a piston head or valve element 68 which is slidable in the housing 63. In the position shown in FIGURE 5, the braking valve 16 is inoperative.
  • the solenoid 15 is effected to move the valve element 68 into the position shown in dotted lines so that the fluid under pressure is passed through the port 65 to the reducing valve 17.
  • the main slide valve or distributor valve 18 comprises a housing 69 having a port 70 connected to one side of the motor 6, a port 71 connected to the other side of the motor 6, a port 72 connected to the main pressure line by way of the reducing valve 17 and the braking valve 16, and a port 73 connected to the safety valve 32.
  • a piston rod 74 having a valve element or piston head 75 fixed thereto is positioned within the housing 69' so that its ends extend respectively into a cylinder block 76 and a cylinder bloc-k 77.
  • the bore of the cylinder block 76 is connected to the valve 21 while the bore of the cylinder block 77 is connected to the valve 23.
  • valves 21 and 23 are operated so that fluid unde pressure is applied to the end of the piston rod 74 in the block 77 and the pressure previously applied to the end of the piston rod 4 through the valve 21 is released. This causes the valve element 75 to move into the dotted line position so that fluid under pressure is passed through the port 71 to the opposite side of the motor 6, thereby reversing the direction of rotation thereof.
  • the valve 21 comprises a housing 78 having a port 79 connected to the main pressure line, a port 80 connected to the valve 18 for controlling the operation thereof, and two ports 81 and 82 both of which are connected to the tank or reservoir.
  • the port 81 is connected by means of a bypass passage 83 to a secondary port opening out into the base of the housing.
  • a piston rod 78 having two spaced valve elements or piston heads 85 and 86 is mounted within the housing 78.
  • valve 21 In the position shown in the drawing, the valve 21 is operative to allow fluid under pressure to pass to the valve 18 and to allow communication between the ports 81 and 82 by the bypass passage 83.
  • the inoperative position of the valve 21 where the valve elements are moved into the positions shown in dotted lines, it will 'be seen that the fluid under pressure is bypassed to the tank or reservoir by the port 81 and that fluid returned from the valve 18 is passed through the tank or reservoir via the port 82. In this position the passage 83 is blocked by the valve element '86.
  • the valves 21 and 23 are mirror images of one another and that, in operation, the valve elements of one valve are always in the opposition position to those of the other valve, i.e. one is operative and the other is inoperative.
  • the safety valve 32 comprises a housing 88 having a port 89 connected to the valve 18 and a port 90 connected to the tank or reservoir.
  • a plunger 91 having a valve element or a piston head 92 is mounted in the housing 88 with a free end of the plunger 91 being coupled to the collared spindle 31 for operation by the bellcrank lever 26 in the manner hereinbefore described.
  • the valve 32 In the position shOWn in the drawing, the valve 32 is inoperative. However, in order to release pressure in the valve 18 and thus in the system generally, the valve element 92 is moved into the dotted line position thereof so that the fluid passes through the port 90 to the tank or reser voir.
  • the bypass valve 36 is illustrated in FIGURE 9 as comprising a housing 93 having ports 94 and 95 connected to the tank or reservoir and ports 96 and 97 connected to the hydraulic motor 6.
  • a piston rod 98 which extends beyond both ends of the housing 93 is provided with a valve element or piston head 99 which is of a length to cover both of the ports 96 and 97 at the same time. If it is desired to move the actuating means C manually, either end of the piston rod 98 may be depressed to move the valve element 99 in either direction as indicated by the arrow 100 so that either the port 96 is in communicaion with the port 94 or the port 97 'is in communication with the port 94 thereby bypassing the pressure fluid.
  • the valve element 99 is biased into an inoperative position by a coil spring 101 and the port 95 is provided to allow any fluid in the housing to flow back to the tank or reservoir.
  • the invention provides a simple but efiicient means for accurately controlling the stroke of the needle actuating means in that, by simply varying the positions of the rollers 7 and'8 according to the knitting width required, the needle actuating means are slowed down and reversed, or are caused to move slowly throughout their stroke and are reversed, at the end of their stroke.
  • the electrical circuit is particularly advantageous in that it has been designed to use as few electrical components as possible in order to ensure reliability. In this respect, it will be noted that no relays whatsoever are used in the main drive circuit.
  • a multi-head full fashioned flat bed knitting machine comprising a plurality of knitting divisions, a control division, driven means arranged in said control division to carry out reciprocatory movement lengthwise of the machine, needle actuating means arranged in said knitting divisions and operatively connected to said driven means, fashioning mechanisms arranged in each of said knitting divisions, adjustable means opera tively connected to said fashioning mechanisms the positions of which determine the knitting width of a garment piece, said driven means being operated by electrohydraulic means which include a hydraulic circuit, valves arranged in said hydraulic circuit for controlling the speed and direction of movement of said driven means, mechanically operated electric switch means connected to pilot valves in said hydraulic circuit for reversing the direction of movement of said driven means, and variable limit determining means for controlling the stroke of said driven means.
  • a multi-head full fashioned fiat bed knitting machine comprising a plurality of knitting divisions, a control division, driven means arranged in said control division to carry out reciprocatory movement lengthwise of the machine, needle actuating means arranged in said knitting divisions and operatively connected to said driven means, fashioning mechanisms arranged in each of said knitting divisions, adjustable means operatively connected to said fashioning mechainsms the positions of which determine the knitting width of a garment piece, said driven means being operated by electro-hydraulic means which include a hydraulic circuit, valves arranged in said hydraulic circuit for controlling the speed and direction of movement of said driven means, mechanically operated electric switch means for actuating brak ing valves in said hydraulic circuit when said driven means is nearing the end of a stroke, mechanically operated electric switch means connected to pilot valves operating said reversing valves in said hydraulic circuit for changing the direction of movement of said driven means, and variable limit determining means for controlling the stroke of said driven means.
  • a multi-head full fashioned fiat bed knitting machine comprising a plurality of knitting divisions, a control division, driven means arranged in said control division to carry out reciprocatory movement lengthwise of the machine, needle actuating means arranged in said knitting divisions and operatively connected to said driven means, fashioning mechanisms arranged in each of said knitting divisions, nut housings adjustably mounted on LH. and RH.
  • said driven means being operated by electro-hydraulic means which include a hydraulic circuit having hydraulic valves for controlling the speed and direction of movement of said driven means, mechanically operated electric switch means for actuating braking valves in said hydraulic circuit when said driven means is nearing the end of a stroke, mechanically operated electric switch means connected to pilot valves operating said reversing valves in said hydraulic circuit for changing the direction of movement of said driven means, and variable limit determining means for controlling the stroke of said driven means, said limit determining means consisting of a cam plate secured to and movable with said driven member, and a contact roller mounted on each of said nut housings for engagement by said cam plate during movement of the latter, said rollers being operatively coupled to said electric switch means.
  • a multi-head full fashioned fiat bed knitting machine comprising a plurality of knitting divisions, a control division, driven means arranged in said control division to carry out reciprocatory movement lengthwise of the machine, needle actuating means arranged in said knitting divisions and operatively connected to said driven means, a pair of spaced co-operating adjustable means the positions of which determine the knitting width of a garment piece, said driven means being operated by electrohydraulic means which include a hydraulic circuit having hydraulic valves for controlling the speed and direction of movement of said driven means, mechanically operated electric switch means for actuating braking valves in said hydraulic circuit when said driven means in nearing the end of a stroke, mechanically operated electric switch means connected to pilot valves operating said reversing valves in said hydraulic circuit for changing the direction of movement of said driven means, and variable limit determining means for controlling the stroke of said driven means, said limit determiningrneans consisting of a cam plate secured to and movable'with said driven member, and a contact roller mounted on each of said adjustable means for engagement by said
  • a multi-head full fashioned flatbed knitting machine comprising a plurality of knitting divisions, a control division, driven means arranged in said control divison to carry out reciprocatory movement lengthwise of the machine, needle actuating means arranged in said knitting divisions and operatively connected to said driven means, a pair of spaced co-operating adjustable means the positions of which determine the knitting Width of a garment piece, said driven means being operated by electrohydraulic means which include a hydraulic circuit having hydraulic valves for controlling the speed and direction of movement of said driven means, mechanically operated electric switch means for actuating braking valves in said hydraulic circuit when said driven means is nearing the end of a stroke, mechanically operated electric switch means connected to pilot valves operating said reversing valves in said hydraulic circuit for changing the direction of movement of said driven means, and variable limit determining means for controlling the stroke of said driven means, said limit determining means consisting of a cam plate secured to and movable with said driven member, and a contact roller mounted on each of said adjustable means for engagement by said cam
  • a multi-head full fashioned flat bed knitting machine comprising a plurality of knitting divisions, a control division, driven means arranged in said control division to carry out reciprocat-ory movement lengthwise of the machine, needle actuating means arranged in said knitting divisions and operatively connected to said driven means, a pair of spaced co-operating adjustable means the positions of which determine the knitting width of a garment piece, said driven means being operated by electrohydrauhe means which include a hydraulic circuit having hydraulic valves for controlling the seed and direction of movement of said driven means, mechanically operated electric switch means for actuating braking valves in said hydraulic circuit when said driven means is nearing the end of a stroke, mechanically operated electric switch means connected to pilot valves operating said reversing valves in said hydraulic circuit for changing the direction of movement of said driven means, and variable limit determining means for controlling the stroke of said driven means, said limit determining means consisting of a cam plate secured to and movable with said driven member, a contact roller mounted on each of said adjustable means for engagement by said cam plate during
  • a multi-head full fashioned flat bed knitting machine comprising a plurality of knitting divisions, a control division, driven means arranged in said control divisions to carry out reciprocatory movement lengthwise of the machine, needle actuating means arranged in said knitting O divisions and operatively connected to said driven means, a pair of spaced co-operating adjustable means the posi-' tions of which determine the knitting width of a garment piece, said driven means being operated by electro-hydraulic means which include a hydraulic circuit having hydraulic valves for controlling the speed and direction of movement of said driven means, a mechanically operated electric switch associated with each of said adjustable means for actuating braking valves in said hydraulic circuit when said driven means is nearing the end of a stroke, a mechanically operated electric switch common to both of said adjustable means connected to pilot valves operating said reversing valves in s-aid hydraulic circuit for changing the direction of movement of said driven means, and variable limit determining means for controlling the stroke of said driven means, said limit determining means consisting of a cam plate secured to and mov
  • a knitting machine as claimed in claim 8 including switch means for stopping the movement of said driven means at the end of a stroke.
  • a knitting machine as claimed in claim 10 including a by-pass valve to permit of manual operation of said driven means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
US391488A 1963-08-29 1964-08-24 Flat bed rib knitting machines Expired - Lifetime US3323330A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34213/63A GB1016989A (en) 1963-08-29 1963-08-29 Improvements in or relating to flat bed rib knitting machines

Publications (1)

Publication Number Publication Date
US3323330A true US3323330A (en) 1967-06-06

Family

ID=10362810

Family Applications (1)

Application Number Title Priority Date Filing Date
US391488A Expired - Lifetime US3323330A (en) 1963-08-29 1964-08-24 Flat bed rib knitting machines

Country Status (4)

Country Link
US (1) US3323330A (fr)
CH (1) CH433563A (fr)
FR (1) FR1405192A (fr)
GB (1) GB1016989A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425245A (en) * 1965-05-15 1969-02-04 Stoll & Co H Flat knitting machines
US3624707A (en) * 1969-09-26 1971-11-30 Scheller Textilmaschinenfabrik Pattern tickler machine for flat hosiery knitting machines
US3653231A (en) * 1968-11-09 1972-04-04 Bently Engineering Co Ltd The Means and method of controlling the speed of a circular knitting machine
WO1989004311A1 (fr) * 1987-11-12 1989-05-18 American Home Products Corporation Amines polycycliques a activite psychotrope

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189717050A (en) * 1897-07-19 1897-09-25 Heinrich Verges Improvements in or relating to Hydraulic Driving Mechanism for Knitting Machines.
US1977729A (en) * 1932-03-19 1934-10-23 Kalio Inc Means for regulating the speed of knitting machines
US2442822A (en) * 1944-07-06 1948-06-08 Mellor Bromley And Company Ltd Knitting machine
US2939304A (en) * 1958-01-16 1960-06-07 Mach Tool Works Oerlikon Hydraulic drive mechanism for the thread guide rails of flat coulier knitting machines
US3089322A (en) * 1958-08-20 1963-05-14 Cotton Silk & Man Made Fibres Automatic machinery
US3158013A (en) * 1964-11-24 Monday

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3158013A (en) * 1964-11-24 Monday
GB189717050A (en) * 1897-07-19 1897-09-25 Heinrich Verges Improvements in or relating to Hydraulic Driving Mechanism for Knitting Machines.
US1977729A (en) * 1932-03-19 1934-10-23 Kalio Inc Means for regulating the speed of knitting machines
US2442822A (en) * 1944-07-06 1948-06-08 Mellor Bromley And Company Ltd Knitting machine
US2939304A (en) * 1958-01-16 1960-06-07 Mach Tool Works Oerlikon Hydraulic drive mechanism for the thread guide rails of flat coulier knitting machines
US3089322A (en) * 1958-08-20 1963-05-14 Cotton Silk & Man Made Fibres Automatic machinery

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425245A (en) * 1965-05-15 1969-02-04 Stoll & Co H Flat knitting machines
US3653231A (en) * 1968-11-09 1972-04-04 Bently Engineering Co Ltd The Means and method of controlling the speed of a circular knitting machine
US3624707A (en) * 1969-09-26 1971-11-30 Scheller Textilmaschinenfabrik Pattern tickler machine for flat hosiery knitting machines
WO1989004311A1 (fr) * 1987-11-12 1989-05-18 American Home Products Corporation Amines polycycliques a activite psychotrope

Also Published As

Publication number Publication date
FR1405192A (fr) 1965-07-02
CH433563A (fr) 1967-04-15
GB1016989A (en) 1966-01-12

Similar Documents

Publication Publication Date Title
US3323330A (en) Flat bed rib knitting machines
US3407946A (en) Control mechanism for backhoe
US3006170A (en) Selective positioning system
US2224257A (en) Mechanism for eliminating backlash
US1963473A (en) Straight knitting machine
US3492897A (en) Automatic machine tool control mechanism
US2705879A (en) Mechanism for driving the thread guide of a full-fashioned knitting machine
US3318110A (en) Flat bed knitting machines
US2206620A (en) Compensator mechanism
US2388716A (en) Valve mechanism
US2921452A (en) Knitting machines and operating mechanism therefor
US3396558A (en) Yarn feeding mechanisms for flat bed knitting machines
US3093168A (en) Power operated device
US3673819A (en) Yarn carrier driver means for vee bed knitting machines
US2625773A (en) Automatic circular grinding machine
US3290899A (en) Cabling lace attachment
US2912840A (en) Yarn carrier mechanism for flat knitting machines
US2205566A (en) Printing press
US3451230A (en) Flat twin bed knitting machines
US3247687A (en) Yarn carrier control for a knitting machine
US2318855A (en) Power transmission
US3589145A (en) Devices for automatic adjustment of draw travel of slur cocks in straight bar knitting machines
US2094995A (en) Feed mechanism control
US2130393A (en) Honing machine
US1950509A (en) Control mechanism