EP4386121A1 - Machine à tricoter rectiligne - Google Patents

Machine à tricoter rectiligne Download PDF

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Publication number
EP4386121A1
EP4386121A1 EP22213717.6A EP22213717A EP4386121A1 EP 4386121 A1 EP4386121 A1 EP 4386121A1 EP 22213717 A EP22213717 A EP 22213717A EP 4386121 A1 EP4386121 A1 EP 4386121A1
Authority
EP
European Patent Office
Prior art keywords
nbh
nbv
needle bed
slide
flat knitting
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.)
Pending
Application number
EP22213717.6A
Other languages
German (de)
English (en)
Inventor
Jürgen Mohr
Frieder RANDECKER
Matthias Göbel
Lares SPEIDEL
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.)
Karl Mayer Stoll R&D GmbH
Original Assignee
Karl Mayer Stoll R&D GmbH
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 Karl Mayer Stoll R&D GmbH filed Critical Karl Mayer Stoll R&D GmbH
Priority to EP22213717.6A priority Critical patent/EP4386121A1/fr
Priority to CN202311713279.3A priority patent/CN118207682A/zh
Publication of EP4386121A1 publication Critical patent/EP4386121A1/fr
Pending legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/94—Driving-gear not otherwise provided for
    • D04B15/96—Driving-gear not otherwise provided for in flat-bed knitting machines
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/10—Needle beds

Definitions

  • the invention relates to a flat knitting machine - hereinafter referred to as machine - with a first and a second needle bed which are spaced apart by a comb gap, wherein at least one of the needle beds is assigned an adjusting device with which the corresponding needle bed can be adjusted transversely to a longitudinal direction of the machine in order to adjust the width of the comb gap.
  • the machine In order to meet the variety of tasks required of a machine today, the machine must offer a high degree of flexibility in terms of adaptation to different conditions and thus the adjustability of the machine.
  • the object of the present invention is therefore to provide a machine with a high degree of flexibility with regard to the adjustment of the comb gap width.
  • a flat knitting machine with a first and a second needle bed, which are spaced apart by a comb gap, wherein at least one of the needle beds is assigned an adjusting device with which the corresponding needle bed can be adjusted transversely to a longitudinal direction of the flat knitting machine in order to adjust the width of the comb gap
  • the adjusting device has a cross slide connected to the needle bed and a longitudinal slide that can be moved in the longitudinal direction of the machine by means of a drive, wherein the cross slide and the longitudinal slide each have a control contour and at least one control contour extends transversely to the longitudinal direction of the machine, so that a movement of the longitudinal slide in the longitudinal direction of the machine leads to an adjustment of the cross slide transversely to the longitudinal direction of the machine due to the interacting control contours.
  • the adjustment device can preferably be arranged or attached to the needle bed support. This can be done without significantly weakening the needle bed support.
  • the adjustment device can be arranged below the needle bed and fixed there to the needle bed support. This results in a space-saving arrangement.
  • the drive can be designed as a motor drive.
  • the drive can be designed as a linear drive.
  • the drive can be controlled by a controller. This enables an automated, precise and fast adjustment of the comb gap.
  • Each needle bed can be assigned an independently driven adjustment device.
  • the adjustment device of one needle bed can be driven independently of the adjustment device of the other needle bed.
  • the independently driven adjustment devices can therefore be mechanically decoupled.
  • the adjustment devices assigned to the different needle beds can be constructed identically. If each needle bed is assigned an independently driven adjustment device, the needle beds can be adjusted independently of one another. This means that the needle beds can assume different positions relative to one another. This results in a high degree of flexibility for adjusting the comb gap.
  • At least two independently driven adjustment devices can be assigned to a needle bed. This makes it possible to set a comb gap, viewed in the longitudinal direction of the machine, whose width is not constant, in particular, changes from one end of the needle bed to the other end of the needle bed.
  • the adjustment devices can be controlled when the machine is at a standstill in order to adjust the comb gap or can be adjusted during a knitting process.
  • At least one control contour can be designed as an inclined surface. It can therefore be sufficient if the other control contour is designed as a control projection. However, the other control contour is preferably also designed as an inclined surface, with the slopes of the surfaces being coordinated with one another. If both control contours have an inclined surface, There is a large support area for the transverse slide and the longitudinal slide. It is also conceivable to design one of the control contours as a concave surface.
  • At least one control contour can be adjustable in its alignment with the longitudinal direction of the machine. This allows the slope of a bevel to be adjusted. This can be helpful in compensating for translation errors between different adjustment devices or in forming a comb gap that has a different width from one end of the needle beds to the other end of the needle beds, i.e. a non-constant width over the length of the needle beds.
  • the longitudinal slides of at least two adjustment devices assigned to the same needle bed are driven by a common drive.
  • the two adjustment devices can be coupled, for example, via a screw gear, a threaded rod or the like. This means that the set distance between the longitudinal slides and thus the adjustment devices cannot change during operation.
  • the drive can be designed, for example, as a linear drive. This also applies to the independently driven adjustment devices.
  • Sensors for detection or stops for defining the limits of the adjustment range of the longitudinal slide and/or transverse slide can be provided. This ensures that the slides always have a sufficiently large common surface and are adequately supported. Adjustment beyond the limits of the adjustment range can be ruled out.
  • At least one control contour is designed as an inclined surface, a linear, in particular non-step-shaped adjustment of the comb gap or the comb gap width can take place within the adjustment range.
  • the cross slide can be connected to the needle bed via an adjustment device.
  • it can be connected to the needle bed via an eccentrically mounted ball bearing. This measure enables further precise alignment of the needle bed.
  • a hold-down plate can be provided which is arranged pivotably on a needle bed and is supported on a fixed point via an elastic element. This can prevent closing beyond the middle of the comb gap without the application of external force.
  • the invention is explained using the example of a flat knitting machine 100.
  • Figure 1a shows a sectional view of a flat knitting machine 100 in the area of the first and second needle bed or the front and rear needle bed NBV, NBH.
  • locks SV, SH which are assigned to the respective needle beds NBV, NBH, are shown.
  • Knitting needles NV, NH can be moved by the locks SV, SH.
  • the knitting needles NV, NH are shown as latch needles.
  • slider needles can also be used.
  • the needle beds NBV, NBH there is a comb gap KS.
  • the comb gap KS is relatively narrow.
  • the needle beds NBV, NBH were moved apart, so that a wider comb gap KS was created.
  • the needle beds NBV, NBH are set to the same size, ie they have the same distance from the comb gap center KSM. However, the setting can be made separately and individually for each needle bed NBV, NBH. This makes it possible, for example, to have a needle bed that is displaced to one side relative to the machine center.
  • the resulting asymmetrical comb gap opening can be used for different types of knitted fabric and for inserting different threads or different components.
  • the Figure 2a shows a device 10 for adjusting the position of a needle bed NBV, NBH of the flat knitting machine 100.
  • the adjustment device 20 has a longitudinal slide 21 and a cross slide 36, whereby the cross slide 36 is only shown in relation to the adjustment device 30 and has been hidden for the adjustment device 20 in order to be able to show the longitudinal slide 21.
  • the longitudinal slide 21 is movably mounted on the screw gear 25.
  • the longitudinal slide of the adjustment device 30 is designated by 31.
  • the longitudinal slide 21 has a control contour 21' designed as an inclined surface. Accordingly, a control element 22 is provided on the cross slide 36, which has a control contour 22' designed as an inclined surface.
  • a holder 23 is provided on which a guide groove 24 for the cross slide 36 is formed. The guide groove 24 is limited by guide surfaces 24', 24".
  • the movement in the longitudinal slide 21 is initiated by a drive 40, which can be designed as a motor, which drives the helical gear 25 directly or by means of components not shown here such as a clutch, gear or belt, etc. and sets it in rotation, whereby the longitudinal slide 21 guided on the helical gear 25 is moved in the longitudinal direction of the associated needle bed in the illustration shown, i.e. to the left or right.
  • a drive 40 which can be designed as a motor, which drives the helical gear 25 directly or by means of components not shown here such as a clutch, gear or belt, etc. and sets it in rotation, whereby the longitudinal slide 21 guided on the helical gear 25 is moved in the longitudinal direction of the associated needle bed in the illustration shown, i.e. to the left or right.
  • the longitudinal slide 21 is moved either to the left or to the right.
  • the travel path of the longitudinal slide 21 can be freely selected up to the maximum adjustment range and can be limited by sensors, stops, etc. not shown here.
  • each adjustment device 20, 30 has its own drive. This allows an individual adjustment of the height positions of the ends of the needle beds NBV, NBH and thus also of an angle of the needle beds NBV, NBH to the longitudinal direction of the flat knitting machine. This can be used to compensate for tolerances. Furthermore, settings of the needle beds NBV, NBH are possible in which the comb gap KS has a different width from one end of the needle beds NBV, NBH to the other end.
  • the longitudinal slide 21 engages with its control contour 21' on the control element 22 of the lifting slide 36, whereby the horizontal or linear movement of the longitudinal slide 21 is converted into a transverse movement of the control element 22 and thus of the transverse slide 36.
  • the transverse slide 36 is thus moved upwards or downwards depending on the rotary movement of the drive 40.
  • an adjustment device 39 is shown, which is arranged on the cross slide 36. This serves to support the associated needle bed NBV, NBH on the cross slide 36 and to adjust the needle bed NBV, NBH relative to the cross slide 36. This allows a fine adjustment or compensation of tolerances.
  • the guides designated with the reference numbers 37, 38 represent a longitudinal guide for the cross slide 36 and hold it in position.
  • the Figure 3 shows a top view of an area of the needle beds NBV, NBH of the flat knitting machine 100.
  • the needle bed NBH is hidden here.
  • the needle bed NBH can be adjusted via two adjustment devices 20, 30.
  • the adjustment devices 20, 30 are coupled via the helical gear 25, which can be driven by the drive 40.
  • the adjustment devices 20, 30 are arranged below the needle bed NBH and are arranged on a needle bed carrier 101.
  • the helical gear 25 is mounted at two positions 25'.
  • the Figure 4a shows the longitudinal slide 21 of the lifting device 20 in a further embodiment.
  • the control contour 21' is formed on a separate component 21b.
  • the component 21b is pivotally connected to the longitudinal slide 21 via a pivot point D.
  • the pivot point D can be arranged on the left or right side of the longitudinal slide 21.
  • the area of the component 21b opposite the pivot point D can be raised or lowered via an adjustment device 21e, which is designed here as an eccentric that can be driven by a motor or manually.
  • This allows the slope of the inclined surface of the control contour 21' and thus the alignment of the control contour 21' or the inclined surface to the longitudinal direction of the machine 100 to be changed. Tolerances can be compensated for by this measure. Individual comb gap shapes can also be realized in this way.
  • the counterpart of the component 21b can be designed to compensate for the variable pitch.
  • it can have a convex design.
  • the control element 22 can also be designed accordingly in order to be able to change the control contour 22', in particular its pitch, manually or by means of a drive.
  • FIG. 5a shows such a hold-down plate 50 to the left and right of the comb gap center KSM for a narrowly set comb gap KS.
  • the hold-down plates 50 are shown in the closed state.
  • the Fig. 5b shows the hold-down plates 50 with a wide comb gap KS.
  • the distances between the plate noses 52 remain largely constant, regardless of the comb gap width that is set. This is particularly evident in the enlarged view of a section of the Fig. 5a in the Fig. 5c to recognize.
  • the hold-down sinkers 50 are pivotally mounted on a pivot point DP on the associated needle bed NBV, NBH. A movement in the hold-down sinker 50 is introduced into the sinker foot 51 on the lock side. Because the hold-down sinkers 50 are pivotally mounted on the pivot point DP on the respective needle bed NBV, NBH, an adjustment of the needle bed NBH, NBV also affects the position of the pivot point DP in relation to the comb gap or the machine center.
  • the hold-down sinker 50 is prevented from being closed by an elastic (springy) element 53 which rests on a fixed point AF, e.g. a wire.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP22213717.6A 2022-12-15 2022-12-15 Machine à tricoter rectiligne Pending EP4386121A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22213717.6A EP4386121A1 (fr) 2022-12-15 2022-12-15 Machine à tricoter rectiligne
CN202311713279.3A CN118207682A (zh) 2022-12-15 2023-12-13 横机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22213717.6A EP4386121A1 (fr) 2022-12-15 2022-12-15 Machine à tricoter rectiligne

Publications (1)

Publication Number Publication Date
EP4386121A1 true EP4386121A1 (fr) 2024-06-19

Family

ID=84537372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22213717.6A Pending EP4386121A1 (fr) 2022-12-15 2022-12-15 Machine à tricoter rectiligne

Country Status (2)

Country Link
EP (1) EP4386121A1 (fr)
CN (1) CN118207682A (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10031684A1 (de) * 2000-06-29 2002-01-10 Stoll & Co H Flachstrickmaschine
US20060191297A1 (en) * 2003-07-30 2006-08-31 Minoru Sonomura Sinker unit of weft knitting machine
DE60132803T2 (de) * 2000-12-04 2009-07-09 Shima Seiki Mfg. Ltd. Flachstrickmaschine
CN110670224A (zh) * 2019-10-31 2020-01-10 宁波慈星股份有限公司 一种针织横机自动调节针床板口装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10031684A1 (de) * 2000-06-29 2002-01-10 Stoll & Co H Flachstrickmaschine
DE60132803T2 (de) * 2000-12-04 2009-07-09 Shima Seiki Mfg. Ltd. Flachstrickmaschine
US20060191297A1 (en) * 2003-07-30 2006-08-31 Minoru Sonomura Sinker unit of weft knitting machine
CN110670224A (zh) * 2019-10-31 2020-01-10 宁波慈星股份有限公司 一种针织横机自动调节针床板口装置

Also Published As

Publication number Publication date
CN118207682A (zh) 2024-06-18

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