EP3231914B1 - Crankshaft and connecting rod mechanism of needle bed of warp knitting machine with single needle bed - Google Patents

Crankshaft and connecting rod mechanism of needle bed of warp knitting machine with single needle bed Download PDF

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Publication number
EP3231914B1
EP3231914B1 EP15867128.9A EP15867128A EP3231914B1 EP 3231914 B1 EP3231914 B1 EP 3231914B1 EP 15867128 A EP15867128 A EP 15867128A EP 3231914 B1 EP3231914 B1 EP 3231914B1
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EP
European Patent Office
Prior art keywords
connecting rod
crankshaft
needle bed
pin shaft
knitting machine
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.)
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Application number
EP15867128.9A
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German (de)
French (fr)
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EP3231914A4 (en
EP3231914A1 (en
Inventor
Minqi Wang
Hanzhu WANG
Qi Zhao
Zhe HU
Pengfei Jiang
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.)
Changzhou Wujin Wuyang Textile Machinery Co Ltd
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Changzhou Wujin Wuyang Textile Machinery Co Ltd
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Application filed by Changzhou Wujin Wuyang Textile Machinery Co Ltd filed Critical Changzhou Wujin Wuyang Textile Machinery Co Ltd
Publication of EP3231914A1 publication Critical patent/EP3231914A1/en
Publication of EP3231914A4 publication Critical patent/EP3231914A4/en
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/06—Needle bars; Sinker bars
    • D04B27/08—Driving devices therefor

Definitions

  • the present invention relates to a needle bed transmission mechanism for a warp knitting machine with a single needle bed, and specifically discloses a needle bed crankshaft-connecting rod mechanism for a warp knitting machine with a single needle bed.
  • a warp knitting machine is a knitting machine that uses chemical fibres as the raw material to knit apparel fabrics, underwear fabrics, swimsuit fabrics, curtain fabrics, household fabrics and industrial fabrics.
  • the cam-type transmission mechanism has been extensively used as the needle bed transmission mechanism for existing warp knitting machines. Since the cam has relatively high inertia and centrifugal force during rotation, the operating speed of the machine is affected, and the production efficiency of the machine cannot be further improved.
  • connecting rod mechanisms have been used. Examples are disclosed in CN 201 326 072 Y , US 2 986 909 A , US 3 802 226 A , CN 102 182 006 A and CN 102 733 065 A .
  • the object of the present invention is to overcome the problems above by providing a needle bed crankshaft-connecting rod mechanism for a warp knitting machine with a single needle bed, which can effectively shorten the stroke of the needle bed connecting rod mechanism, such that its vibration and inertia are low, and the machine can be operated at a higher speed, thereby improving the production efficiency.
  • a needle bed crankshaft-connecting rod mechanism for a warp knitting machine with a single needle bed which is a connecting rod mechanism composed of a connecting rod frame, a crankshaft, a plurality of connecting rods and pin shafts.
  • a plurality of grooves is formed on the connecting rod frame, and the crankshaft is fixed in the grooves and can rotate freely.
  • one end of the connecting rod a is connected with the crankshaft, and the other end thereof is connected with a pin shaft a and can rotate around the pin shaft a.
  • a clamping device is disposed at the connection between the connecting rod a and the crankshaft, and the contact surface of the clamping device with the crankshaft is a circular-arc concave surface with a bearing shell installed thereon.
  • the pin shaft a is further connected with the connecting rod b
  • the connecting rod b is divided into two parts, left and right, which are arranged symmetrically and in parallel on two sides of the pin shaft a and can rotate around the pin shaft a.
  • the other end of the connecting rod b is connected with the pin shaft b and can rotate around the pin shaft b.
  • two ends of the pin shaft a and the pin shaft b are provided with a connecting rod c and a connecting rod d, respectively, and they can all rotate around the pin shafts.
  • the connecting rod c and the connecting rod d are both provided with a plurality of protruding columns a and columns b, the columns are sheathed by steel jackets, and the steel jackets are installed into the grooves of the connecting rod frame.
  • a connecting rod e is disposed at the central position of the pin shaft b, the connecting rod e can rotate around the pin shaft b, the connecting rod e is provided with a fastening device thereon for adjusting the tightness between the connecting rod e and the pin shaft b, and the other end of the connecting rod e is connected with the looping part.
  • Fig. 1 is a schematic diagram of the structure of the present invention
  • Fig. 2 is a side view of the present invention.
  • connecting rod frame 2. crankshaft, 3. connecting rod a, 4. connecting rod c, 5. column a, 6. pin shaft a, 7. connecting rod b, 8. connecting rod d, 9. column b, 10. pin shaft b, 11. connecting rod e.
  • a needle bed crankshaft-connecting rod mechanism for a warp knitting machine with a single needle bed is mainly composed of a connecting rod frame 1, a crankshaft 2, a plurality of connecting rods 3, 4, 7, 8, 11 and pin shafts 6, 10.
  • a plurality of grooves is formed on the connecting rod frame 1, and the crankshaft 2 is fixed in the grooves and can rotate freely.
  • One end of the connecting rod a 3 is connected with the crankshaft 2, and the other end thereof runs into a pin shaft a 6 and can rotate around the pin shaft a 6.
  • a clamping device is disposed at the connection between the connecting rod a 3 and the crankshaft 2, and the contact surface of the clamping device with the crankshaft 2 is a circular-arc concave surface, the clamping device is divided into two parts with a bearing shell installed in each of the parts, the bearing shell is formed with a small hole thereon, the separated two parts sheathe the crankshaft 2 and are fastened by tightening screws through the threaded holes on two sides of the two parts, a lubrication system injects oil into the small holes, such that a thin oil film is formed between the bearing shell and the crankshaft 2.
  • the advantage of such a practice is that the rotation of the crankshaft 2 becomes smoother, and the friction between the crankshaft 2 and the bearing shell is reduced. As a result, the crankshaft 2 is very well protected, the operating load on the power device and the force applied mutually on the transmission parts are reduced, and the machine operates more steadily and smoothly while electric power is saved.
  • the pin shaft a 6 is further connected with the connecting rod b 7, the connecting rod b 7 is divided into two parts, left and right, which are arranged symmetrically and in parallel on two sides of the pin shaft a 6 and can rotate around the pin shaft a 6.
  • the other end of the connecting rod b 7 is connected with the pin shaft b 10 and can rotate around the pin shaft b 10.
  • the pin shaft a 6 and the pin shaft b 10 are parallel to each other, two ends thereof are provided with a connecting rod c 4 and a connecting rod d 8, respectively, and they can all rotate around the pin shafts.
  • the connecting rod c 4 and the connecting rod d 8 are both provided with a plurality of protruding columns a 5 and columns b 9, the columns are sheathed by steel jackets, and the steel jackets are installed into the grooves of the connecting rod frame.
  • a connecting rod e 11 is disposed at the central position of the pin shaft b 10, the connecting rod e 11 can rotate around the pin shaft b 10, the connecting rod e 11 is provided with a fastening device thereon for adjusting the tightness between the connecting rod e 11 and the pin shaft b 10, and the other end of the connecting rod e 11 is connected with the looping part.
  • the transmission device drives the crankshaft 2 to rotate, and the crankshaft 2 drives, via the needle bed connection rod, the looping part to make looping motion.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Description

    Field of the Invention
  • The present invention relates to a needle bed transmission mechanism for a warp knitting machine with a single needle bed, and specifically discloses a needle bed crankshaft-connecting rod mechanism for a warp knitting machine with a single needle bed.
    • Description of the Related Art
  • A warp knitting machine is a knitting machine that uses chemical fibres as the raw material to knit apparel fabrics, underwear fabrics, swimsuit fabrics, curtain fabrics, household fabrics and industrial fabrics. As the warp knitting machine only uses warps to knit fabrics, it has been very popular in the textile industry thanks to the advantages such as short industrial process for production, high production efficiency, a great number of fabric varieties, low investments and low energy consumption.
  • The cam-type transmission mechanism has been extensively used as the needle bed transmission mechanism for existing warp knitting machines. Since the cam has relatively high inertia and centrifugal force during rotation, the operating speed of the machine is affected, and the
    production efficiency of the machine cannot be further improved.
  • Alternatively, connecting rod mechanisms have been used. Examples are disclosed in CN 201 326 072 Y , US 2 986 909 A , US 3 802 226 A , CN 102 182 006 A and CN 102 733 065 A .
    • Summary of the Invention
  • The object of the present invention is to overcome the problems above by providing a needle bed crankshaft-connecting rod mechanism for a warp knitting machine with a single needle bed, which can effectively shorten the stroke of the needle bed connecting rod mechanism, such that its vibration and inertia are low, and the machine can be operated at a higher speed, thereby improving the production efficiency.
  • The technical solution employed by the present invention as follows:A needle bed crankshaft-connecting rod mechanism for a warp knitting machine with a single needle bed, which is a connecting rod mechanism composed of a connecting rod frame, a crankshaft, a plurality of connecting rods and pin shafts.
  • Furthermore, a plurality of grooves is formed on the connecting rod frame, and the crankshaft is fixed in the grooves and can rotate freely.
  • Furthermore, one end of the connecting rod a is connected with the crankshaft, and the other end thereof is connected with a pin shaft a and can rotate around the pin shaft a.
  • Furthermore, a clamping device is disposed at the connection between the connecting rod a and the crankshaft, and the contact surface of the clamping device with the crankshaft is a circular-arc concave surface with a bearing shell installed thereon.
  • Furthermore, the pin shaft a is further connected with the connecting rod b, the connecting rod b is divided into two parts, left and right, which are arranged symmetrically and in parallel on two sides of the pin shaft a and can rotate around the pin shaft a.
  • Furthermore, the other end of the connecting rod b is connected with the pin shaft b and can rotate around the pin shaft b.
  • Furthermore, two ends of the pin shaft a and the pin shaft b are provided with a connecting rod c and a connecting rod d, respectively, and they can all rotate around the pin shafts.
  • Furthermore, the connecting rod c and the connecting rod d are both provided with a plurality of protruding columns a and columns b, the columns are sheathed by steel jackets, and the steel jackets are installed into the grooves of the connecting rod frame.
  • Furthermore, a connecting rod e is disposed at the central position of the pin shaft b, the connecting rod e can rotate around the pin shaft b, the connecting rod e is provided with a fastening device thereon for adjusting the tightness between the connecting rod e and the pin shaft b, and the other end of the connecting rod e is connected with the looping part.
  • In summary, the application of the above technical solution has the following advantageous effects:
    1. 1. Kinematic pairs of such a mechanism are all revolute pairs, the connected rods (shafts) are in surface contact, leading to a low pressure, such that wear and tear is insignificant for contact positions of all parts, the impact on motion regularity of looping parts is relatively low, and vibration and inertia are low;
    2. 2. The structure has a steady and accurate transmission, such that the machine can be operated at a higher speed of rotation, and the noise is relatively low, thereby improving the operation efficiency;
    3. 3. All parts of the structure are easy to be processed, and it is relatively easy to achieve relatively high geometric precision.
    Brief Description of the Drawings
  • Fig. 1 is a schematic diagram of the structure of the present invention;Fig. 2 is a side view of the present invention.
  • Legends in the drawings: 1. connecting rod frame, 2. crankshaft, 3. connecting rod a, 4. connecting rod c, 5. column a, 6. pin shaft a, 7. connecting rod b, 8. connecting rod d, 9. column b, 10. pin shaft b, 11. connecting rod e.
    • Detailed Description of the Specific Embodiments
  • The present invention will be further described below with reference to the accompanying drawings.
  • As shown in Fig. 1, a needle bed crankshaft-connecting rod mechanism for a warp knitting machine with a single needle bed is mainly composed of a connecting rod frame 1, a crankshaft 2, a plurality of connecting rods 3, 4, 7, 8, 11 and pin shafts 6, 10.
  • A plurality of grooves is formed on the connecting rod frame 1, and the crankshaft 2 is fixed in the grooves and can rotate freely.
  • One end of the connecting rod a 3 is connected with the crankshaft 2, and the other end thereof runs into a pin shaft a 6 and can rotate around the pin shaft a 6.
  • A clamping device is disposed at the connection between the connecting rod a 3 and the crankshaft 2, and the contact surface of the clamping device with the crankshaft 2 is a circular-arc concave surface, the clamping device is divided into two parts with a bearing shell installed in each of the parts, the bearing shell is formed with a small hole thereon, the separated two parts sheathe the crankshaft 2 and are fastened by tightening screws through the threaded holes on two sides of the two parts, a lubrication system injects oil into the small holes, such that a thin oil film is formed between the bearing shell and the crankshaft 2. The advantage of such a practice is that the rotation of the crankshaft 2 becomes smoother, and the friction between the crankshaft 2 and the bearing shell is reduced. As a result, the crankshaft 2 is very well protected, the operating load on the power device and the force applied mutually on the transmission parts are reduced, and the machine operates more steadily and smoothly while electric power is saved.
  • The pin shaft a 6 is further connected with the connecting rod b 7, the connecting rod b 7 is divided into two parts, left and right, which are arranged symmetrically and in parallel on two sides of the pin shaft a 6 and can rotate around the pin shaft a 6.
  • The other end of the connecting rod b 7 is connected with the pin shaft b 10 and can rotate around the pin shaft b 10.
  • The pin shaft a 6 and the pin shaft b 10 are parallel to each other, two ends thereof are provided with a connecting rod c 4 and a connecting rod d 8, respectively, and they can all rotate around the pin shafts.
  • The connecting rod c 4 and the connecting rod d 8 are both provided with a plurality of protruding columns a 5 and columns b 9, the columns are sheathed by steel jackets, and the steel jackets are installed into the grooves of the connecting rod frame.
  • A connecting rod e 11 is disposed at the central position of the pin shaft b 10, the connecting rod e 11 can rotate around the pin shaft b 10, the connecting rod e 11 is provided with a fastening device thereon for adjusting the tightness between the connecting rod e 11 and the pin shaft b 10, and the other end of the connecting rod e 11 is connected with the looping part. The transmission device drives the crankshaft 2 to rotate, and the crankshaft 2 drives, via the needle bed connection rod, the looping part to make looping motion.
  • Only a preferred embodiment of the present invention is described above, which is not used to limit the present invention.

Claims (5)

  1. A needle bed crankshaft-connecting rod mechanism for a warp
    knitting machine with a single needle bed, which is a connecting rod mechanism composed of a connecting rod frame (1), a crankshaft (2), a plurality of connecting rods a-d (3, 4, 7, 8) and pin shafts a, b (6, 10), wherein one end of connecting rod a (3) is connected with the crankshaft (2), and the other end thereof is connected with pin shaft a (6) and can rotate around said pin shaft a (6),
    characterized in that the pin shaft a (6) is further connected with connecting rod b (7), the connecting rod b (7) is divided into two parts, left and right, which are arranged symmetrically and in parallel on two sides of the pin shaft a (6) and can rotate around the pin shaft a (6), wherein the other end of the connecting rod b (7) is connected with pin shaft b (10), and can rotate around the pin shaft b (10),
    wherein the two ends of the pin shaft a (6) and the two ends of the pin shaft b (10) are provided with both ends of connecting rod c (4) and both ends of connecting rod d (8), respectively, that can all rotate around the pin shafts (6, 10).
  2. The needle bed crankshaft-connecting rod mechanism for a warp knitting machine with a single needle bed according to claim 1, characterized in that a
    plurality of grooves is formed on the connecting rod frame (1), and the crankshaft (2) is fixed in the grooves and can rotate freely.
  3. The needle bed crankshaft-connecting rod mechanism for a warp knitting machine with a single needle bed according to claim 1, characterized in that a
    clamping device is disposed at the connection between the connecting rod a (3) and the crankshaft (2), and the contact surface of the clamping device with the crankshaft (2) is a circular-arc concave surface with a bearing shell installed thereon.
  4. The needle bed crankshaft-connecting rod mechanism for a warp knitting machine with a single needle bed according to claim 1, characterized in that the
    connecting rod c (4) and the connecting rod d (8) are provided with protruding columns a (5) and columns b (9), respectively, the columns are sheathed by steel jackets, and the steel jackets are installed into the grooves of the connecting rod frame (1).
  5. The needle bed crankshaft-connecting rod mechanism for a warp knitting machine with a single needle bed according to claim 1, characterized in that a
    connecting rod e (11) is disposed at the central position of the pin shaft b (10), the connecting rod e (11) can rotate around the pin shaft b (10), the connecting rod e (11) is provided with a fastening device thereon for adjusting the tightness between the connecting rod e (11) and the pin shaft b (10), and the other end of the connecting rod e (11) is connected with the looping part to make looping motion.
EP15867128.9A 2014-12-09 2015-04-15 Crankshaft and connecting rod mechanism of needle bed of warp knitting machine with single needle bed Active EP3231914B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410743486.8A CN104452083A (en) 2014-12-09 2014-12-09 Needle-bed crankshaft and connecting rod mechanism of single-needle-bed warp knitting machine
PCT/CN2015/076604 WO2016090787A1 (en) 2014-12-09 2015-04-15 Crankshaft and connecting rod mechanism of needle bed of warp knitting machine with single needle bed

Publications (3)

Publication Number Publication Date
EP3231914A1 EP3231914A1 (en) 2017-10-18
EP3231914A4 EP3231914A4 (en) 2018-05-16
EP3231914B1 true EP3231914B1 (en) 2019-05-15

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ID=52898800

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15867128.9A Active EP3231914B1 (en) 2014-12-09 2015-04-15 Crankshaft and connecting rod mechanism of needle bed of warp knitting machine with single needle bed

Country Status (5)

Country Link
EP (1) EP3231914B1 (en)
CN (1) CN104452083A (en)
ES (1) ES2734100T3 (en)
TR (1) TR201909366T4 (en)
WO (1) WO2016090787A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104452083A (en) * 2014-12-09 2015-03-25 常州市武进五洋纺织机械有限公司 Needle-bed crankshaft and connecting rod mechanism of single-needle-bed warp knitting machine
CN105088513B (en) * 2015-08-25 2017-06-20 常州市武进五洋纺织机械有限公司 A kind of tricot machine with crankshaft connecting rod system

Citations (3)

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CN201753393U (en) 2010-07-30 2011-03-02 浙江越剑机械制造有限公司 High-speed warp knitting machine sinker motion transmission device
CN102733070A (en) 2012-05-31 2012-10-17 常州市武进五洋纺织机械有限公司 Settlement crankshaft connecting rod mechanism of double warp machine
CN203382956U (en) 2013-07-25 2014-01-08 常州市润源经编机械有限公司 Guide structure for guide bar suspension bracket of warp knitting machine

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DE1217539B (en) * 1957-10-29 1966-05-26 Liebrandt Karl Warp knitting machine
DE2123273C3 (en) * 1971-05-11 1973-11-08 Karl Mayer, Textil-Maschinenfabrik Gmbh, 6053 Obertshausen Warp knitting machine with point needles and sinkers
FR2751352B1 (en) * 1996-07-16 1998-10-16 Artechnic DEVICE FOR PERFORMING THE JUNCTION BETWEEN A KNITTING YARN AND A SELECTED KNITTING YARN FOR A KNITTING MACHINE
CN101289780B (en) * 2008-05-20 2013-01-30 常州市第八纺织机械有限公司 Short tranverse crankshaft connecting rod device of warp knitting machine
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CN201326072Y (en) * 2008-12-04 2009-10-14 常州市第八纺织机械有限公司 Short-stroke crankshaft connecting rod device of multi-axial tricot machine
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CN102182006B (en) * 2011-04-27 2012-12-26 常州市润源经编机械有限公司 Compound needle shifter for warp knitting machine
CN102505327A (en) * 2011-10-28 2012-06-20 王敏其 Connecting rod rest device for transmission of crankshaft of warp knitting machine
CN102733065A (en) * 2012-05-31 2012-10-17 常州市武进五洋纺织机械有限公司 Two-needle bed warp knitting machine with needle bed crankshaft connecting rod mechanism
CN102733067A (en) * 2012-05-31 2012-10-17 常州市武进五洋纺织机械有限公司 Crankshaft two-needle bar warp knitting machine
CN203754942U (en) * 2014-01-26 2014-08-06 常州市润源经编机械有限公司 Core needle moving mechanism of looped pile type warp knitting machine
CN104452081A (en) * 2014-12-09 2015-03-25 常州市武进五洋纺织机械有限公司 Settling crankshaft connecting rod mechanism for single needle bed warp knitting machine
CN104480626A (en) * 2014-12-09 2015-04-01 常州市武进五洋纺织机械有限公司 Crankshaft and connecting rod mechanism of guide bar of warp knitting machine with single needle bed
CN104452083A (en) * 2014-12-09 2015-03-25 常州市武进五洋纺织机械有限公司 Needle-bed crankshaft and connecting rod mechanism of single-needle-bed warp knitting machine

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Publication number Priority date Publication date Assignee Title
CN201753393U (en) 2010-07-30 2011-03-02 浙江越剑机械制造有限公司 High-speed warp knitting machine sinker motion transmission device
CN102733070A (en) 2012-05-31 2012-10-17 常州市武进五洋纺织机械有限公司 Settlement crankshaft connecting rod mechanism of double warp machine
CN203382956U (en) 2013-07-25 2014-01-08 常州市润源经编机械有限公司 Guide structure for guide bar suspension bracket of warp knitting machine

Also Published As

Publication number Publication date
TR201909366T4 (en) 2019-07-22
EP3231914A4 (en) 2018-05-16
CN104452083A (en) 2015-03-25
WO2016090787A1 (en) 2016-06-16
ES2734100T3 (en) 2019-12-04
EP3231914A1 (en) 2017-10-18

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