EP3227048A1 - A device for spinning machine for screwing and/or unscrewing operation during processing of rubber coat arbours - Google Patents

A device for spinning machine for screwing and/or unscrewing operation during processing of rubber coat arbours

Info

Publication number
EP3227048A1
EP3227048A1 EP15841017.5A EP15841017A EP3227048A1 EP 3227048 A1 EP3227048 A1 EP 3227048A1 EP 15841017 A EP15841017 A EP 15841017A EP 3227048 A1 EP3227048 A1 EP 3227048A1
Authority
EP
European Patent Office
Prior art keywords
screwing
unscrewing
control unit
assembly
unit
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.)
Withdrawn
Application number
EP15841017.5A
Other languages
German (de)
French (fr)
Inventor
Jitendra Ishwarbhai Mevada
Naresh MISTRY
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3227048A1 publication Critical patent/EP3227048A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • B23P19/06—Screw or nut setting or loosening machines
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/74—Rollers or roller bearings
    • D01H5/80—Rollers or roller bearings with covers; Cots or covers
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H2700/00—Spinning or twisting machines; Drafting devices
    • D01H2700/245—Conception or fabrication of drafting cylinders

Definitions

  • the invention relates to a field of textile machinery. More particularly it relates to the processing of rubber cot arbours. Specifically it relates to device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cots.
  • the rubber cot arbours assembly is mainly used in producing compact yarn on ring spinning machine of textile manufacturing. There are large quantities rubber cot arbours assemblies used in spinning or similar type mill to run ring-spinning machine with compact spinning system.
  • the rubber cot arbours assembly consists of two-part housing, big diameter rubber cot arbour, small diameter rubber cot arbour, gear assembly and Allen screw.
  • the rubber cot arbour assembly (1) includes small (2) and big (3) rubber cot arbours.
  • the both rubber cot arbors are in contact with each other with the help of covers (4, 5) to be fitted with alien screw (9).
  • the Allen screw used for holding two part (4, 5) of covers requires exact tightening torque.
  • the rubber cot arbour assembly (1) further includes gear assembly (6) which is operationally in contact with the gear assemblies (7, 8) of the small and big rubber cot arbours respectively.
  • the cover is typically made of plastic material.
  • the cover keeps the rubber cot abrours intact and at the same time it protects rubber cots from any damage. For finishing purpose it is required to remove cover.
  • plastic cover is fixed on to the rubber cot arbours using alien screw.
  • Conventionally and in state of art technology the screwing and unscrewing operations are carried out manually by the operator/labourer. But since rubber cot arbours are very dedicated articles, there are chances of getting it damaged due to manual handling. Also manual handling is not accurate and is very time consuming. Further, manual handling demands for skilled operator/labourer. In short, due to manual handling production cost increases significantly.
  • US Patent No. 3674070 describes a hand tool having the ability to engage various types and sizes of screw fastener heads.
  • the hand tool comprises a bundle of wires held in a generally tubular housing with one end of the bundle projecting slightly beyond the end of the housing. The other end of the bundle presses against a deformable cell located in the housing.
  • a handle is attached to the other end of the housing.
  • US Patent No. 4158375 discloses screwdriver comprising a shank, a conventional screw driving head projecting from one end of the shank and in alignment therewith and characterized by an auxiliary screw driving head including a pair of auxiliary screw driving bits projecting from opposite sides respectively relative to the shank and angularly arranged relative to each other whereby a screw with a limited overhead space may be screwed by alternative engagement of the auxiliary screw driving bits with the head of the screw and progressive complementary rotation of the auxiliary bits.
  • the latter are angularly arranged at different angles relative to the shank each as seen in front view.
  • auxiliary ribs are angularly offset one relative to the other by an angle of preferably 90° between them as seen in front view to complementarily produce a rotation of 180°.
  • auxiliary bits are similarly offset by preferably 45° to complementarily produce a rotation of 90°.
  • the principle objective of the present invention is to provide an automated system with definite torque to unscrew and screw of Allen screw that is used for holding two parts of covering connecting big rubber cot arbour and small rubber cot arbour.
  • Another objective of the invention is to provide a device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cots which has fully automated operation.
  • Further objective of the invention is to provide device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cots which protects rubber cot arbours from damage occurred due to manual processing.
  • Another objective of the invention is to provide the device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cots which ensures fast and error less processing of rubber cots.
  • Another objective of the invention is to provide the device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cots which ensures less manpower and thereby reduces production cost.
  • Still another objective of the invention is to provide the device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cots which is easy to operate and maintain.
  • Yet another objective of the invention is to provide the device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cots in which it is easy to modify the settings of the machine.
  • the rubber cot arbours assembly includes at least a set of two rubber cot arbours namely first rubber cot arbour and second rubber cot arbour, the first rubber cot arbour having larger diameter than the second rubber cot arbour, the first and second rubber cot arbours being accommodated in a housing including top cover and bottom cover, the top cover and bottom cover of housing being attached to each other through a fastening means, the device comprising: a gripping assembly to hold the rubber cot arbours for screwing and unscrewing purpose, the gripping assembly comprises: - a gripper unit including an upper jaw and lower jaw, the upper jaw being configured to hold the top cover and the lower jaw being configured to hold the bottom cover and thereby to accommodate the rubber cot arbours,
  • a pair of vacuum units being connected to the gripper unit and slider clamping unit, the vacuum units being configured to control movement of the upper jaw and lower jaw and proper gripping of the top cover and bottom cover in the upper jaw and lower jaw respectively;
  • a screwing and unscrewing assembly for screwing and unscrewing of the fastening means, the screwing and unscrewing assembly comprises:
  • a sliding unit comprising a linear guide to enable vertical movement of the screwing and unscrewing unit; a support structure for accommodating the gripping assembly and the screwing and unscrewing assembly; a first control unit being operatively connected to the gripping assembly to control the operation of the gripping assembly; a second control unit being operatively connected to the screwing and unscrewing assembly to control the operation of the screwing and unscrewing assembly; and a third control unit being connected to the first control unit and second control unit and configured to control operation of the first control unit and second control unit.
  • FIG. 5(a) Shows side view of the device of figure 3.
  • Figures 5(a) Shows different views of the screwing and unscrewing to 5 (c) assembly.
  • Figure 6 Shows perspective view of the gripping assembly.
  • Figures 7(a) Shows schematic representation of the working of the to 7(u) device of figure 3.
  • Rubber cot arbour set Rubber cot arbour set referred hereinafter means a set of two rubber cot arbours. Out of these two cots one rubber cot arbour is having smaller diameter than the other rubber cot arbour.
  • Processing of rubber cot arbours includes activities like removal of cover from the unfinished rubber cot arbour set, putting the cover on finished rubber cot arbour set, providing rubber cot arbour set automatically to buffing machine for buffing operation and automatically taking the buffed rubber cot arbour set from the buffing machine.
  • Finished rubber cot arbour Finished rubber cot arbour referred hereinafter includes rubber cot arbours having buffing operation completed. Unfinished rubber cot arbour: Unfinished rubber cot arbour referred hereinafter includes rubber cot arbours requiring buffing operation to be carried out.
  • the device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cots in accordance to present invention is illustrated.
  • the finished and unfinished rubber cot arbours are referred as rubber cot arbours assembly.
  • the device (10) includes a gripping assembly (200) to hold the rubber cot arbours (11, 12) for screwing and unscrewing purpose and a screwing and unscrewing assembly (100) for screwing and unscrewing of the fastening means (9).
  • the rubber cot arbours assembly includes at least a set of two rubber cot arbours (11, 12).
  • the rubber cot arbour (11) is having smaller diameter than the rubber cot arbour (12).
  • the rubber cot arbours (11,12) are accommodated in a housing.
  • the housing includes top cover (13) and bottom cover (14).
  • the top cover (13) and bottom cover (14) of housing are attached to each other through a fastening means (9).
  • the fastening means (9) is Allen screw.
  • the gripping assembly (200) holds the rubber cot arbours (11,12) for screwing and unscrewing purpose.
  • the gripping assembly includes a gripper unit including an upper jaw (205) and lower jaw (206).
  • the upper jaw (205) is configured to hold the top cover (13) and the lower jaw (206) is configured to hold the bottom cover (14).
  • the lower jaw (206) also accommodates the rubber cot arbours (11,12) through the bottom cover (14).
  • a slider clamping unit (201) is also a part of the gripping assembly (200).
  • the slider clamping unit (201) allows vertical sliding movement of the upper jaw (205) and lower jaw (206).
  • the upper jaw (205) and lower jaw (206) move upward and downward in vertical direction to have a grip on the rubber cot arbours (11,12).
  • the upper jaw (205) and lower jaw (206) of gripper unit are connected to the slider clamping unit (201).
  • a pair of vacuum units (203,204) is connected to the gripper unit and slider clamping unit (201).
  • the vacuum units (203, 204) are configured to control movement of the upper jaw (205) and lower jaw (206).
  • the vacuum units (203, 204) also permits proper gripping of the top cover (13) and bottom cover (14) in the upper jaw (205) and lower jaw (206) respectively.
  • the gripping assembly (200) further includes mounting bracket (202).
  • the screwing and unscrewing assembly (100) for screwing and unscrewing of the fastening means (9) is illustrated.
  • the screwing and unscrewing assembly (100) includes a screwing and unscrewing unit (115, 116, 117) to screw and unscrew the fastening means (9).
  • the screwing and unscrewing unit (115, 116, 117) comprises a bit (117) fixed through ratchet (116).
  • the screwing and unscrewing unit is driven by a driving unit (114).
  • the driving unit (114) is preferably a servo motor (114).
  • the servomotor (114) is operatively connected to the screwing and unscrewing unit (115, 116, 117) through a shaft (105).
  • the shaft (105) is connected to the ratchet (116) by means of ratchet adaptor (115).
  • a sliding unit (102, 103) is provided in the screwing and unscrewing assembly (100).
  • the sliding unit (102, 103) comprises a linear guide (102) to enable vertical movement of the screwing and unscrewing unit.
  • the screwing and unscrewing unit (115, 116, 117) is operatively connected to the linear guide (102) through slider (103).
  • the slider (103) is connected to the screwing and unscrewing unit (115, 116, 117) through mounting parts (106, 104, 109) of the slider (103).
  • the servomotor (114) is fixed on mounting part (106) by means of flange (113).
  • the screwing and unscrewing assembly (100) further includes mounting bracket (101).
  • a support structure (700) in the form of vertical stand or like is provided for accommodating the gripping assembly and the screwing and unscrewing assembly (100).
  • the screwing and unscrewing assembly (100) and gripping assembly (200) are fixed on the vertical stand by means of mounting brackets (101, 202).
  • a control unit (300) is operatively connected to the screwing and unscrewing assembly (100) to control the operation of the screwing and unscrewing assembly (100).
  • the screwing and unscrewing operation is decided by the control unit (300).
  • the control unit (300) is electronic in nature.
  • Another control unit (400) is operatively connected to the gripping assembly to control the operation of the gripping assembly (200).
  • the control unit (400) controls the movement of upper jaw (205) and lower jaw (206).
  • the control unit (400) is electro pneumatic in nature.
  • control unit (500) is connected to the control units (300, 400) and configured to control operation of the control unit (300) and control unit (400).
  • the control unit (500) is electronic in nature.
  • the control unit (500) instructs control unit (300) and control unit (400) regarding screwing-unscrewing and gripping operation respectively.
  • all control units (300, 400, 500) are different entities. Each of them may include at least one processor. It is possible that all control units can be configured in a single entity preferably with a single processor.
  • the control units (300, 400, 500) includes various sensors or like to sense and respond to various activities relating to operation of the screwing and unscrewing assembly (100) and gripping assembly (200).
  • a push button or sensor (600) is provided for the control unit (500) for start/stop operation of the device.

Abstract

Disclosed is a device (10) for use in spinning machine for screwing and/or unscrewing operation during processing of rubber cot arbours assembly. The device (10) includes a gripping assembly (200) to hold the rubber cot arbours (11, 12) for screwing and unscrewing purpose and a screwing and unscrewing assembly (100) for screwing and unscrewing of the fastening means (9). The screwing and unscrewing assembly (100) and gripping assembly (200) are fixed on a support structure (700). The operation of the screwing and unscrewing assembly (100) is controlled by a first control unit (300). A second control unit (400) controls the operation of the gripping assembly (200). A third control unit is provided to control operation of the first control unit (300) and second control unit (400). The device of present invention ensures automatic screwing and unscrewing operation and thereby reducing labour and production cost. Further, at the same time it enables error free processing of the rubber cot arbours (11,12).

Description

"A DEVI CE FOR SPI NNI NG MACHI NE FOR SCREW I NG AND/ OR UNSCREW I NG OPERATI ON DURI NG PROCESSI NG
OF RUBBER COT ARBOURS"
Fl ELD OF INVENTION:
The invention relates to a field of textile machinery. More particularly it relates to the processing of rubber cot arbours. Specifically it relates to device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cots.
PRIOR ART:
In textile machinery rubber cot arbours assemblies are widely used. The rubber cot arbours assembly is mainly used in producing compact yarn on ring spinning machine of textile manufacturing. There are large quantities rubber cot arbours assemblies used in spinning or similar type mill to run ring-spinning machine with compact spinning system. The rubber cot arbours assembly consists of two-part housing, big diameter rubber cot arbour, small diameter rubber cot arbour, gear assembly and Allen screw.
In existing systems, in spinning mill at regular intervals/ schedules, the grinding or buffing of big & small rubber cot arbours of the rubber cot arbours assembly or similar type assembly is being carried out. This is required due to continuous running wear-out of rubber surface and hence rubber surface roughness change. For carrying the grinding of rubber cot arbours during regular maintenance schedule, the rubber cot arbours assemblies have to be disassembled by removing small and big cot from the assembly. Referring to figures 1(a) and 1(b), the rubber cot arbour assembly (1) includes small (2) and big (3) rubber cot arbours. The both rubber cot arbors are in contact with each other with the help of covers (4, 5) to be fitted with alien screw (9). The Allen screw used for holding two part (4, 5) of covers requires exact tightening torque. The rubber cot arbour assembly (1) further includes gear assembly (6) which is operationally in contact with the gear assemblies (7, 8) of the small and big rubber cot arbours respectively.
The cover is typically made of plastic material. The cover keeps the rubber cot abrours intact and at the same time it protects rubber cots from any damage. For finishing purpose it is required to remove cover. Generally plastic cover is fixed on to the rubber cot arbours using alien screw. Conventionally and in state of art technology, the screwing and unscrewing operations are carried out manually by the operator/labourer. But since rubber cot arbours are very dedicated articles, there are chances of getting it damaged due to manual handling. Also manual handling is not accurate and is very time consuming. Further, manual handling demands for skilled operator/labourer. In short, due to manual handling production cost increases significantly.
Further, some of the screwing-unscrewing devices are discussed herein after. US Patent No. 3674070 describes a hand tool having the ability to engage various types and sizes of screw fastener heads. The hand tool comprises a bundle of wires held in a generally tubular housing with one end of the bundle projecting slightly beyond the end of the housing. The other end of the bundle presses against a deformable cell located in the housing. A handle is attached to the other end of the housing. When the projecting wires are pressed against the head of a screw fastener, the wires deform about the head thereby making a replica mold of the surface of the screw fastener head. Lateral torque thereafter applied to the handle causes the deformed wires to transmit this torque to the screw causing it to rotate.
US Patent No. 4158375 discloses screwdriver comprising a shank, a conventional screw driving head projecting from one end of the shank and in alignment therewith and characterized by an auxiliary screw driving head including a pair of auxiliary screw driving bits projecting from opposite sides respectively relative to the shank and angularly arranged relative to each other whereby a screw with a limited overhead space may be screwed by alternative engagement of the auxiliary screw driving bits with the head of the screw and progressive complementary rotation of the auxiliary bits. The latter are angularly arranged at different angles relative to the shank each as seen in front view. Thus for slotted head screw the auxiliary ribs are angularly offset one relative to the other by an angle of preferably 90° between them as seen in front view to complementarily produce a rotation of 180°. For an alien screw or phillips screw the auxiliary bits are similarly offset by preferably 45° to complementarily produce a rotation of 90°.
However, the afore discussed screwing-unscrewing devices are not automatic in working. Manual intervention is required for their operation which leads to deficiencies like skilled operator, increased production cost, lesser lifespan of the rubber cot arbours.
Hence it is necessary to develop a mechanism to handle screwing and/or unscrewing operation in rubber cot arbours which will be free from foregoing problems. OBJECTS OF THE I NVENTI ON:
The principle objective of the present invention is to provide an automated system with definite torque to unscrew and screw of Allen screw that is used for holding two parts of covering connecting big rubber cot arbour and small rubber cot arbour.
Another objective of the invention is to provide a device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cots which has fully automated operation.
Further objective of the invention is to provide device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cots which protects rubber cot arbours from damage occurred due to manual processing.
Another objective of the invention is to provide the device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cots which ensures fast and error less processing of rubber cots.
Another objective of the invention is to provide the device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cots which ensures less manpower and thereby reduces production cost.
Still another objective of the invention is to provide the device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cots which is easy to operate and maintain.
Yet another objective of the invention is to provide the device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cots in which it is easy to modify the settings of the machine.
STATEMENT OF THE I NVENTI ON:
Accordingly to achieve the aforesaid objectives, present invention provides a device for use in spinning machine for screwing and/or unscrewing operation during processing of rubber cot arbours assembly, the rubber cot arbours assembly includes at least a set of two rubber cot arbours namely first rubber cot arbour and second rubber cot arbour, the first rubber cot arbour having larger diameter than the second rubber cot arbour, the first and second rubber cot arbours being accommodated in a housing including top cover and bottom cover, the top cover and bottom cover of housing being attached to each other through a fastening means, the device comprising: a gripping assembly to hold the rubber cot arbours for screwing and unscrewing purpose, the gripping assembly comprises: - a gripper unit including an upper jaw and lower jaw, the upper jaw being configured to hold the top cover and the lower jaw being configured to hold the bottom cover and thereby to accommodate the rubber cot arbours,
- a slider clamping unit to enable vertical sliding movement of the upper jaw and lower jaw, the upper jaw and lower jaw of gripper unit are connected to the slider clamping unit,
- a pair of vacuum units being connected to the gripper unit and slider clamping unit, the vacuum units being configured to control movement of the upper jaw and lower jaw and proper gripping of the top cover and bottom cover in the upper jaw and lower jaw respectively; a screwing and unscrewing assembly for screwing and unscrewing of the fastening means, the screwing and unscrewing assembly comprises:
- a screwing and unscrewing unit to screw and unscrew the fastening means,
- a driving unit being connected to the screwing and unscrewing unit to operate the screwing and unscrewing unit,
- a sliding unit comprising a linear guide to enable vertical movement of the screwing and unscrewing unit; a support structure for accommodating the gripping assembly and the screwing and unscrewing assembly; a first control unit being operatively connected to the gripping assembly to control the operation of the gripping assembly; a second control unit being operatively connected to the screwing and unscrewing assembly to control the operation of the screwing and unscrewing assembly; and a third control unit being connected to the first control unit and second control unit and configured to control operation of the first control unit and second control unit.
BRI EF DESCRI PTI ON OF DRAWI NGS:
Shows perspective view of rubber cot arbours assembly being used in spinning machine.
Shows perspective view of rubber cot arbours assembly of figure 1 in disassembled form.
Shows block diagram of device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cot arbours in accordance to present invention.
Shows perspective view of device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cot arbours in accordance to present invention.
Shows side view of the device of figure 3. Figures 5(a) Shows different views of the screwing and unscrewing to 5 (c) assembly.
Figure 6 Shows perspective view of the gripping assembly.
Figures 7(a) Shows schematic representation of the working of the to 7(u) device of figure 3.
DETAI LED DESCRIPTION OF THE INVENTION:
Further objective and particular features of the invention are exemplified in the embodiment shown in accompanying drawings and described below.
Meaning of terms:
Rubber cot arbour set: Rubber cot arbour set referred hereinafter means a set of two rubber cot arbours. Out of these two cots one rubber cot arbour is having smaller diameter than the other rubber cot arbour.
Processing of rubber cot arbours: Processing of rubber cot arbours referred hereinafter includes activities like removal of cover from the unfinished rubber cot arbour set, putting the cover on finished rubber cot arbour set, providing rubber cot arbour set automatically to buffing machine for buffing operation and automatically taking the buffed rubber cot arbour set from the buffing machine.
Finished rubber cot arbour: Finished rubber cot arbour referred hereinafter includes rubber cot arbours having buffing operation completed. Unfinished rubber cot arbour: Unfinished rubber cot arbour referred hereinafter includes rubber cot arbours requiring buffing operation to be carried out.
Referring to figures 2 to 4, the device suitable for use in spinning machine for screwing and/or unscrewing operation during processing of finished and unfinished rubber cots in accordance to present invention is illustrated. Hereinafter the finished and unfinished rubber cot arbours are referred as rubber cot arbours assembly. The device (10) includes a gripping assembly (200) to hold the rubber cot arbours (11, 12) for screwing and unscrewing purpose and a screwing and unscrewing assembly (100) for screwing and unscrewing of the fastening means (9).
The rubber cot arbours assembly includes at least a set of two rubber cot arbours (11, 12). The rubber cot arbour (11) is having smaller diameter than the rubber cot arbour (12). The rubber cot arbours (11,12) are accommodated in a housing. The housing includes top cover (13) and bottom cover (14). The top cover (13) and bottom cover (14) of housing are attached to each other through a fastening means (9). Preferably, the fastening means (9) is Allen screw.
Referring to figure 6, the gripping assembly (200) holds the rubber cot arbours (11,12) for screwing and unscrewing purpose. The gripping assembly includes a gripper unit including an upper jaw (205) and lower jaw (206). The upper jaw (205) is configured to hold the top cover (13) and the lower jaw (206) is configured to hold the bottom cover (14). The lower jaw (206) also accommodates the rubber cot arbours (11,12) through the bottom cover (14). A slider clamping unit (201) is also a part of the gripping assembly (200). The slider clamping unit (201) allows vertical sliding movement of the upper jaw (205) and lower jaw (206). The upper jaw (205) and lower jaw (206) move upward and downward in vertical direction to have a grip on the rubber cot arbours (11,12). The upper jaw (205) and lower jaw (206) of gripper unit are connected to the slider clamping unit (201). A pair of vacuum units (203,204) is connected to the gripper unit and slider clamping unit (201). The vacuum units (203, 204) are configured to control movement of the upper jaw (205) and lower jaw (206). The vacuum units (203, 204) also permits proper gripping of the top cover (13) and bottom cover (14) in the upper jaw (205) and lower jaw (206) respectively. The gripping assembly (200) further includes mounting bracket (202).
Referring to figure 5 (a) to 5 (c), the screwing and unscrewing assembly (100) for screwing and unscrewing of the fastening means (9) is illustrated. The screwing and unscrewing assembly (100) includes a screwing and unscrewing unit (115, 116, 117) to screw and unscrew the fastening means (9). The screwing and unscrewing unit (115, 116, 117) comprises a bit (117) fixed through ratchet (116). The screwing and unscrewing unit is driven by a driving unit (114). The driving unit (114) is preferably a servo motor (114). The servomotor (114) is operatively connected to the screwing and unscrewing unit (115, 116, 117) through a shaft (105). The shaft (105) is connected to the ratchet (116) by means of ratchet adaptor (115).
A sliding unit (102, 103) is provided in the screwing and unscrewing assembly (100). The sliding unit (102, 103) comprises a linear guide (102) to enable vertical movement of the screwing and unscrewing unit. The screwing and unscrewing unit (115, 116, 117) is operatively connected to the linear guide (102) through slider (103). The slider (103) is connected to the screwing and unscrewing unit (115, 116, 117) through mounting parts (106, 104, 109) of the slider (103). The servomotor (114) is fixed on mounting part (106) by means of flange (113). The screwing and unscrewing assembly (100) further includes mounting bracket (101).
A support structure (700) in the form of vertical stand or like is provided for accommodating the gripping assembly and the screwing and unscrewing assembly (100). The screwing and unscrewing assembly (100) and gripping assembly (200) are fixed on the vertical stand by means of mounting brackets (101, 202).
A control unit (300) is operatively connected to the screwing and unscrewing assembly (100) to control the operation of the screwing and unscrewing assembly (100). The screwing and unscrewing operation is decided by the control unit (300). Preferably, the control unit (300) is electronic in nature. Another control unit (400) is operatively connected to the gripping assembly to control the operation of the gripping assembly (200). The control unit (400) controls the movement of upper jaw (205) and lower jaw (206). Preferably, the control unit (400) is electro pneumatic in nature.
Yet another control unit (500) is connected to the control units (300, 400) and configured to control operation of the control unit (300) and control unit (400). Preferably, the control unit (500) is electronic in nature. The control unit (500) instructs control unit (300) and control unit (400) regarding screwing-unscrewing and gripping operation respectively. As per one of the design aspect, all control units (300, 400, 500) are different entities. Each of them may include at least one processor. It is possible that all control units can be configured in a single entity preferably with a single processor. The control units (300, 400, 500) includes various sensors or like to sense and respond to various activities relating to operation of the screwing and unscrewing assembly (100) and gripping assembly (200).
A push button or sensor (600) is provided for the control unit (500) for start/stop operation of the device.
Referring to figures 7(a) to 7(u), detailed working of the device of present invention is illustrated. i. Upper jaw (205) move upward and lower jaw (206) move downward. Placing rubber cot arbour set (11, 12) having cover (13, 14) fitted on it, on the gripping assembly (200). [Figures 7(a)-7(c)] ii. Unscrewing, by the screwing and unscrewing assembly (100) set in unscrewing mode, the fastening screw (9) to separate rubber cot arbour set (11, 12) of from the cover (13, 14). After unscrewing, the cover held partially by the upper jaw (205) and partially by the lower jaw (206).
[Figures 7(d)-7(h)] iii. Removing Unfinished rubber cot arbours (11, 12) from separated rubber cot arbour set for further process i.e. buffing. [Figures 7(i)-7(j)] iv. Upper jaw (205) move upward and lower jaw (206) move downward. Placing the finished rubber cot arbour set on the lower jaw (206) of the gripping assembly (200). [Figures 7(k)-7(m)] v. Fixing the cover (13, 14) on the rubber cot arbour using fastening screw (9). The screwing done by the screwing and unscrewing assembly (100) set in screwing mode. [ Figures 7( n) -7( r) ] vi. Upper jaw (205) move upward and lower jaw (206) move downward. Removing rubber cot arbour set (11, 12), having cover (13, 14) fitted on it, from the gripping assembly (200). [ Figures 7(s)-7( u)] .
While various embodiments of the present invention have been described above, it should be understood that they have been presented by way of example only, and not limitation. It will be understood by those skilled in the relevant art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

CLAI MS
1. A device (10) for use in spinning machine for screwing and/or unscrewing operation during processing of rubber cot arbours assembly, the rubber cot arbours assembly includes at least a set of two rubber cot arbours (11, 12) namely first rubber cot arbour (11) and second rubber cot arbour (12), the first rubber cot arbour (11) having smaller diameter than the second rubber cot arbour (12), the first and second rubber cot arbours (11,12) being accommodated in a housing including top cover (13) and bottom cover (14), the top cover (13) and bottom cover (14) of housing being attached to each other through a fastening means (9), the device (10) comprising: a gripping assembly (200) to hold the rubber cot arbours (11,12) for screwing and unscrewing purpose, the gripping assembly comprises:
- a gripper unit including an upper jaw (205) and lower jaw (206), the upper jaw (205) being configured to hold the top cover (13) and the lower jaw (206) being configured to hold the bottom cover (14) and thereby to accommodate the rubber cot arbours (11,12),
- a slider clamping unit (201) to enable vertical sliding movement of the upper jaw (205) and lower jaw (206), the upper jaw (205) and lower jaw (206) of gripper unit are connected to the slider clamping unit,
- a pair of vacuum units (203,204) being connected to the gripper unit and slider clamping unit, the vacuum units (203, 204) being configured to control movement of the upper jaw (205) and lower jaw (206) and proper gripping of the top cover (13) and bottom cover (14) in the upper jaw (205) and lower jaw (206) respectively; a screwing and unscrewing assembly (100) for screwing and unscrewing of the fastening means, the screwing and unscrewing assembly comprises:
- a screwing and unscrewing unit (115, 116, 117) to screw and unscrew the fastening means,
- a driving unit (114) being connected to the screwing and unscrewing unit to operate the screwing and unscrewing unit,
- a sliding unit (102, 103) comprising a linear guide (102) to enable vertical movement of the screwing and unscrewing unit; a support structure (700) for accommodating the gripping assembly and the screwing and unscrewing assembly (100); a first control unit (300) being operatively connected to the screwing and unscrewing assembly to control the operation of the screwing and unscrewing assembly (100); a second control unit (400) being operatively connected to the gripping assembly to control the operation of the gripping assembly (200); and a third control unit being (500) connected to the first control unit and second control unit and configured to control operation of the first control unit (300) and second control unit (400).
The device as claimed in claim 1 wherein the screwing and unscrewing unit comprises a screw driver unit.
The device as claimed in claim 1 wherein the driving unit of the screwing and unscrewing assembly includes servo motor (114).
The device as claimed in claim 1 wherein the fastening means comprises an Allen screw (9).
5. The device as claimed in claim 1 wherein the supporting structure comprises a vertical stand (700).
6. The device as claimed in claim 5 wherein the gripping assembly (200) and screwing and unscrewing assembly (100) are fixed on the vertical stand by means of mounting brackets (101, 202).
7. The device as claimed in claim 1 wherein the first control unit (300), second control unit (400) and third control unit (500) are different entities.
8. The device as claimed in claim 7 wherein each of the first control unit (300), second control unit (400) and third control unit (500) includes at least one processor.
9. The device as claimed in claim 1 wherein the first control unit (300), second control unit (400) and third control unit (500) can be configured in a single entity.
10. The device as claimed in claim 9 wherein the first control unit (300), second control unit (400) and third control unit (500) are configured in a single processor.
EP15841017.5A 2015-02-16 2015-11-09 A device for spinning machine for screwing and/or unscrewing operation during processing of rubber coat arbours Withdrawn EP3227048A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN496MU2015 2015-02-16
PCT/IN2015/050159 WO2016132374A1 (en) 2015-02-16 2015-11-09 A device for spinning machine for screwing and/or unscrewing operation during processing of rubber coat arbours

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EP3227048A1 true EP3227048A1 (en) 2017-10-11

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WO (1) WO2016132374A1 (en)

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Publication number Priority date Publication date Assignee Title
CN110480325A (en) * 2019-08-28 2019-11-22 东泰精密注塑（天津）有限公司 A kind of screw automatic installation apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3674070A (en) 1969-06-02 1972-07-04 Michael Mahoney Universal screwdriver
US4158375A (en) 1978-02-17 1979-06-19 Roger Cournoyer Screwdriver
SU1516298A1 (en) * 1986-12-26 1989-10-23 Предприятие П/Я А-7476 Device for assembling flange joints
US7549204B1 (en) * 2005-11-30 2009-06-23 Western Digital Technologies, Inc. Methods for picking and placing workpieces into small form factor hard disk drives
CN203003466U (en) * 2013-01-06 2013-06-19 襄阳东昇机械有限公司 Device for assembling nut and bolt by automatically setting torque
CN203448974U (en) * 2013-07-16 2014-02-26 杭州大和热磁电子有限公司 Desktop type automatic screw locking device
CN203956475U (en) * 2014-07-08 2014-11-26 厦门欣众达科技有限公司 A kind of motor automatic lock screw device

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