Circular knitting machine for producing velvet with pile on both sides and velvet knitted thereby with pile on both sides

Abstract

A circular knitting machine for producing velvet with pile on both sides is disclosed. The needles and needle cam structure are particularly improved in the knitting unit such that, when the velvet is knitted, the pile is automatically and simultaneously formed on both surfaces of the bottom.

Description

Technical Field

[0001] The present invention relates to a circular knitting machine for flocked velvet and the flocked velvet knitted by the circular knitting machine, and more particularly to a circular knitting machine for flocked velvet in which fluff is automatically formed on both bottom surfaces by improving knitting units, particularly needles and needle cams. Background Art

[0002] Generally, velvet having excellent heat retention and excellent tactile impression is prepared by first knitting with a circular knitting machine and then scraping the surface with a flocking machine to construct fluff.

[0003] More specifically explained, in order to produce velvet, a fabric composed of a bottom surface portion 1 forming a bottom, a flocked surface portion 2 forming a surface, and a tuck part 3 connecting the bottom surface portion 1 and the flocked surface portion 2 is knitted by a circular knitting machine, as shown in Figure 1 (a) of. Then, as shown in Figure 1 (b) of, the flocked surface portion 2 of the fabric is scraped by a flocking machine to construct fluff 4 on the flocked surface portion 2, thereby completing the velvet.

[0004] As a reference, as shown in Figure 2 , a general circular knitting machine is configured to have a knitting yarn supply unit M1 at an upper portion, supply knitting yarn to a knitting unit M2 through the knitting yarn supply unit M1, knit the supplied knitting yarn with needles operating in the knitting unit M2 to knit a fabric, and guide and store the knitted fabric in a storage unit (M3) provided at a lower portion.

[0005] However, when manufacturing velvet in this way, there is a problem of reduced productivity and increased manufacturing cost. That is, if the fabric is first knitted by a circular knitting machine and then fluff is constructed by a flocking machine to produce velvet, the number of manufacturing process steps increases, which results in reduced productivity and processability, while the production cost of the velvet increases due to the additional construction.

[0006] To improve this problem, KR 10-1967704B submitted and registered by the present applicant is disclosed, and KR 10-1967704B discloses a circular knitting machine for flocked velvet in which fluff is automatically constructed on one surface when knitting velvet.

[0007] However, such a conventional circular knitting machine disclosed in the above patent has a disadvantage that fluff cannot be constructed on both surfaces of the velvet because it is configured such that fluff is automatically constructed only on one surface.

[0008] [Citation List]

[0009] [Patent Document]

[0010] 1) KR 10-1967704B (authorized on April 4, 2019; "Circular Knitting Machine for Double-Faced Velour Fabric")

[0011] 2) KR 10-0593253B (authorized on June 19, 2006; "Circular Knitting Machine for Organizing Textiles with Operating Cam of Cartridge Type")

[0012] 3) KR 10-0688345B (authorized on February 22, 2007; "A Circular Knitting Machine")

[0013] 4) KR 10-1760053B (authorized on July 14, 2017; "Fleece Jacquard Circular Knitting Machine") Summary of the Invention

[0014] Technical Problem

[0015] The present invention has been proposed to solve the above problems, and the object of the present invention is to provide a circular knitting machine for velour for raising, which automatically constructs fluff on both sides of the velour when knitting by improving the structure of the needles and needle cams, thereby improving productivity and achieving excellent products.

[0016] Another object of the present invention is to provide a raised velour knitted by the circular knitting machine according to the present invention.

[0017] Solution to the Problem

[0018] The present invention can be achieved by a circular knitting machine for knitting raised velour. Here, when a plurality of knitting yarns are supplied to a knitting unit through a knitting yarn supply unit, outer needles rotate together with an outer cylinder in the knitting unit and move up and down along an outer needle cam, inner needles rotate together with an inner cylinder and move back and forth along an inner needle cam, and the raised velour is knitted by knitting the knitting yarns supplied by the outer needles and the inner needles,

[0019] wherein the outer needles are divided into first outer needles and second outer needles which are alternately installed

[0020] Wherein, the first outer needle is composed of a first outer outer needle and a first outer inner needle as a group. A first outer needle insertion slit that is open in the front, upper, and lower portions in the longitudinal direction is formed in the middle of the first outer outer needle, such that the first outer inner needle can move back and forth when inserted into the first outer needle insertion slit. A first outer hook is formed at the end of the first outer outer needle, a first outer latch is formed at the end of the first outer inner needle to pull the knitting yarn, a first outer guide is formed to protrude upward in the middle of the upper surface of the first outer inner needle, a third outer guide is formed to protrude upward between the middle and the rear of the upper surface of the first outer outer needle, and a first outer knife is formed to protrude upward on the upper surface of the first outer inner needle between the first outer guide and the first outer latch and is configured to cut the knitting yarn when moving forward.

[0021] Wherein, the second outer needle is composed of a second outer outer needle and a second outer inner needle as a group. A second outer needle insertion slit that is open in the front, upper, and lower portions in the longitudinal direction is formed in the middle of the second outer outer needle, such that the second outer inner needle can move back and forth when inserted into the second outer needle insertion slit. A second outer hook is formed at the end of the second outer outer needle, a second outer latch is formed at the end of the second outer inner needle to pull the knitting yarn, a second outer guide is formed to protrude upward in the rear direction of the upper surface of the second outer inner needle, a fourth outer guide is formed to protrude upward in the rear direction of the upper surface of the second outer outer needle, and a second outer knife is formed to protrude upward on the upper surface of the second outer inner needle between the second outer guide and the second outer latch and is configured to cut the knitting yarn when moving forward.

[0022] Wherein, the inner needle is composed of two inner outer needles and an inner inner needle as a group. The inner outer needles are arranged to be spaced apart from each other, and the inner inner needle is inserted between the inner outer needles to move back and forth. Inner hooks are formed at the ends of the inner outer needles, an inner latch is formed at the end of the inner inner needle to pull the knitting yarn, a first inner guide is formed to protrude upward in the rear direction of the upper surface of the inner outer needles, a second inner guide is formed to protrude upward between the middle and the rear of the upper surface of the inner inner needle, and an inner knife is formed to protrude upward on the upper surface of the inner inner needle between the second inner guide and the inner latch and is configured to cut the knitting yarn when moving forward.

[0023] Wherein, the outer needle cam has a first outer guiding groove, a second outer guiding groove, a third outer guiding groove, and a fourth outer guiding groove on one surface. The first outer guiding groove, the second outer guiding groove, the third outer guiding groove, and the fourth outer guiding groove are formed to communicate with each other left and right at a predetermined interval in the vertical direction. The first outer guiding member of the first outer inner needle is inserted into the first outer guiding groove, the second outer guiding member of the second outer inner needle is inserted into the second outer guiding groove, the third outer guiding member of the first outer outer needle is inserted into the third outer guiding groove, and the fourth outer guiding member of the second outer outer needle is inserted into the fourth outer guiding groove. Thus, when the outer needle cam rotates and the first outer inner needle, the first outer outer needle, the second outer inner needle, and the second outer outer needle operate up and down along their corresponding first outer guiding groove, second outer guiding groove, third outer guiding groove, and fourth outer guiding groove respectively, a knitting operation is performed.

[0024] Wherein, the inner needle cam has a first inner guiding groove and a second inner guiding groove on one surface. The first inner guiding groove and the second inner guiding groove are formed to communicate with each other left and right at a predetermined interval in the depth direction. The first inner guiding member of the inner and outer needle is inserted into the first inner guiding groove, and the second inner guiding member of the inner and outer needle is inserted into the second inner guiding groove. Thus, when the inner needle cam rotates and the inner and outer needle and the inner inner needle operate back and forth along their corresponding first inner guiding groove and second inner guiding groove respectively, a knitting operation is performed.

[0025] Wherein, when the first outer inner needle and the second outer inner needle move along the outer needle cam and operate up and down in some sections, the outer bottom is knitted, and the outer bottom and the inner bottom are knitted to weave a tuck stitch portion; when the inner inner needle moves along the inner needle cam and operates back and forth in some sections, the inner bottom is knitted, and the inner bottom and the outer bottom are knitted to weave the tuck stitch portion; when the first outer outer needle and the second outer outer needle move along the outer needle cam and operate up and down in some sections, the plush knitting yarn is pulled and knitted into the outer bottom, and the first outer inner needle and the second outer inner needle are raised to cut the corresponding plush knitting yarn to construct inner plush; and when the first outer outer needle and the second outer outer needle move along the outer needle cam and operate back and forth in some sections, the plush knitting yarn is pulled and knitted into the inner bottom, and the inner inner needle moves forward to cut the plush knitting yarn to construct outer plush, so that the plush is automatically constructed on both sides of the velvet when the velvet is knitted.

[0026] Another object of the present invention can be achieved by a flocked velvet, the flocked velvet including a bottom having a structure in which an outer bottom and an inner bottom are connected by a tuck portion, wherein outer villi are formed on the outer bottom, and the outer villi are knitted into the inner bottom and penetrate the bottom to protrude toward the outer bottom, and inner villi are formed on the inner bottom, and the inner villi are knitted into the outer bottom and penetrate the bottom to protrude toward the inner bottom.

[0027] Advantages of the Invention

[0028] The circular knitting machine for the flocked velvet according to the present invention improves the structures of needles and needle cams, such that when knitting the flocked velvet, villi are automatically formed on both sides of the bottom fabric, thereby improving productivity and processability while reducing manufacturing costs.

[0029] In the present invention, villi are formed by pulling and cutting knitting yarns, so that villi can always be formed with the same length and without irregularities. In addition, since the length of the villi can be adjusted in the range of 1.5 mm to 10 mm according to the degree of pulling the knitting yarns, the quality and diversity of the product can be improved. Description of the Drawings

[0030] Figure 1 is a schematic diagram showing a velvet to explain a conventional velvet production process;

[0031] Figure 2 is a perspective view showing an example of a general circular knitting machine;

[0032] Figure 3 is a cross-sectional view schematically showing a knitting unit of a circular knitting machine for a flocked velvet according to the present invention;

[0033] Figure 4 is an exploded perspective view showing the structure of an outer needle used in a circular knitting machine for a flocked velvet according to the present invention;

[0034] Figure 5 is an exploded perspective view showing the structure of an inner needle used in a circular knitting machine for a flocked velvet according to the present invention;

[0035] Figure 6 is a front cross-sectional view showing the structure of an outer needle cam used in a circular knitting machine for a flocked velvet according to the present invention;

[0036] Figure 7 is a plan cross-sectional view showing the structure of an inner needle cam used in a circular knitting machine for a flocked velvet according to the present invention;

[0037] Figure 8is an operation diagram showing the relationship in which the first outer needle and inner needle applied to the present invention operate along the guiding grooves of the outer needle cam and inner needle cam;

[0038] Figure 9 is an operation diagram showing the relationship in which the second outer needle and inner needle applied to the present invention operate along the guiding grooves of the outer needle cam and inner needle cam; and

[0039] Figure 10 is a diagram schematically showing the structure of the flocked velvet produced by a circular knitting machine for flocked velvet according to the present invention. Detailed Description of the Invention

[0040] The present invention will be described in detail below with reference to the accompanying drawings.

[0041] As Figure 3 shown, in a circular knitting machine for flocked velvet according to the present invention, when a plurality of knitting yarns are supplied to the knitting unit M2 through a knitting yarn supply unit (see Figure 1 ), the outer needle 100 and the inner needle 400 in the knitting unit M2 operate to knit a double-sided velvet having villi constructed on both sides by knitting the supplied knitting yarns.

[0042] The plurality of knitting yarns include bottom knitting yarns, tuck knitting yarns, and villi knitting yarns according to the knitting positions. Since the technology of supplying knitting yarns and knitting knitting yarns in a cycle adopted in the knitting unit M2 is already well known, a detailed description thereof will be omitted.

[0043] In particular, the present invention aims to improve the structure of the knitting unit M2, that is, the needles and needle cams, so that villi are automatically constructed on both sides of the velvet during knitting.

[0044] In other words, the knitting unit M2 of the present invention is configured such that the outer needle 100 rotates together with the outer cylinder 200, operates up and down along the outer needle cam 300, the inner needle 400 rotates together with the inner cylinder 500 and operates back and forth along the inner needle cam 600, and the flocked velvet is knitted by knitting the knitting yarns supplied by the outer needle 100 and the inner needle 400.

[0045] For better understanding, the structure of the flocked velvet will be described below; as Figure 10 shown, the bottom 10 has a structure in which the outer bottom 12 and the inner bottom 14 are connected by a tuck portion 16. Outer villi 20 are constructed on the outer bottom 12, and the outer villi 20 are knitted into the inner bottom 14 to protrude toward the outer bottom 12. Inner villi 30 are constructed on the inner bottom 14, and the inner villi 30 are knitted into the outer bottom 12 to protrude toward the inner bottom 14.

[0046] A further description of the needle structure applied to the present invention. The needle is divided into an outer needle 100 and an inner needle 400, as Figure 4 and Figure 5 shown.

[0047] The outer needle 100 is divided into a first outer needle 110 and a second outer needle 140 which are alternately installed.

[0048] The first outer needle 110 is composed of a first outer outer needle 120 and a first outer inner needle 130 as a group. A first outer needle insertion slit 122 which is open in the front, upper and lower parts in the longitudinal direction is formed in the middle of the first outer outer needle 120, so that the first outer inner needle 130 can move back and forth when inserted into the first outer needle insertion slit 122. A first outer hook 124 is formed at the end of the first outer outer needle 120, and a first outer latch 132 is formed at the end of the first outer inner needle 130 to pull the knitting yarn. A first outer guide 134 is formed to protrude upward in the middle of the upper surface of the first outer inner needle 130. A third outer guide 126 is formed to protrude upward between the middle and the rear of the upper surface of the first outer outer needle 120. A first outer knife 136 is formed to protrude upward on the upper surface of the first outer inner needle 130 between the first outer guide 134 and the first outer latch 132 and is configured to cut the knitting yarn when moving forward.

[0049] The second outer needle 140 is composed of a second outer outer needle 150 and a second outer inner needle 160 as a group. A second outer needle insertion slit 152 which is open in the front, upper and lower parts in the longitudinal direction is formed in the middle of the second outer outer needle 150, so that the second outer inner needle 160 can move back and forth when inserted into the second outer needle insertion slit 152. A second outer hook 154 is formed at the end of the second outer outer needle 150, and a second outer latch 162 is formed at the end of the second outer inner needle 160 to pull the knitting yarn. A second outer guide 164 is formed to protrude upward at the rear of the upper surface of the second outer inner needle 160. A fourth outer guide 156 is formed to protrude upward at the rear of the upper surface of the second outer outer needle 150. A second outer knife 166 is formed to protrude upward on the upper surface of the second outer inner needle 160 between the second outer guide 164 and the second outer latch 162 and is configured to cut the knitting yarn when moving forward.

[0050] For reference, the first outer inner needle 130 and the second outer inner needle 160 are configured to have such a length that when they are respectively inserted into the first outer needle insertion slit 122 of the first outer needle 110 and the second outer needle insertion slit 152 of the second outer needle 140, their rear ends are positioned in the middle of the first outer outer needle 120 and the second outer outer needle 150. Therefore, the first outer inner needle 130 and the second outer inner needle 160 are configured to have sufficient length so that they will not fall off when moving back and forth along the first outer needle insertion slit 122 and the second outer needle insertion slit 152 respectively.

[0051] The inner needle 400 is composed of two inner and outer needles 410 arranged in a set and spaced apart from each other, and an inner inner needle 420 inserted between the inner and outer needles 410 to move back and forth. An inner hook 412 is formed at the end of the inner and outer needle 410, and an inner latch 422 is formed at the end of the inner inner needle 420 to pull the knitting yarn. The first inner guide 414 is formed to protrude in the rearward direction on the upper surface of the inner and outer needle 410. The second inner guide 424 is formed to protrude upward between the middle and the rear of the upper surface of the inner inner needle 420. The inner knife 426 is formed to protrude upward on the upper surface of the inner inner needle 420 between the second inner guide 424 and the inner latch 422 and is configured to cut the knitting yarn when moving forward.

[0052] For reference, the inner inner needle 420 is formed to be longer than the inner and outer needle 410 so that the inner inner needle 420 does not fall off when moving back and forth between the inner and outer needles 410.

[0053] To further describe the needle cam structure applied to the present invention, the needle cam is divided into an outer needle cam 300 and an inner needle cam 600, as Figure 6 and Figure 7 shown.

[0054] The outer needle cam 300 has a first outer guide groove 302, a second outer guide groove 304, a third outer guide groove 306, and a fourth outer guide groove 308 on one surface, which are formed to communicate with each other left and right at a predetermined interval in the vertical direction. The first outer guide 134 of the first outer inner needle 130 is inserted into the first outer guide groove 302, the second outer guide 164 of the second outer inner needle 160 is inserted into the second outer guide groove 304, the third outer guide 126 of the first outer outer needle 120 is inserted into the third outer guide groove 306, and the fourth outer guide 156 of the second outer outer needle 150 is inserted into the fourth outer guide groove 308. Thus, when the outer needle cam 300 rotates and the first outer inner needle 130, the first outer outer needle 120, the second outer inner needle 160, and the second outer outer needle 150 operate up and down along their corresponding first outer guide groove 302, second outer guide groove 304, third outer guide groove 306, and fourth outer guide groove 308 respectively, a knitting operation is performed.

[0055] To further describe the outer needle cam 300, the outer needle cam 300 includes a first outer cam block 310, a second outer cam block 320, a third outer cam block 330, a fourth outer cam block 340, a fifth outer cam block 350, and a sixth outer cam block 360 arranged from right to left, and several groups are connected to form an annular outer needle cam 300.

[0056] In the first outer cam block 310, the first outer guide groove 302 and the second outer guide groove 304 are in The shape is formed, and the third outer guide groove 306 and the fourth outer guide groove 308 are formed in the shape of In the second outer cam block 320, the first outer guide groove 302 and the second outer guide groove 304 are formed in the shape of The shape is formed, and the third outer guide groove 306 and the fourth outer guide groove 308 are formed in the shape of In the third outer cam block 330, the first outer guide groove 302 to the fourth outer guide groove 308 are formed in the shape of In the fourth outer cam block 340, the first outer guide groove 302 and the second outer guide groove 304 are formed in the shape of The shape is formed, and the third outer guide groove 306 and the fourth outer guide groove 308 are formed in the shape of In the fifth outer cam block 350, the first outer guide groove 302 and the second outer guide groove 304 are formed in the shape of The shape is formed, and the third outer guide groove 306 and the fourth outer guide groove 308 are formed in the shape of In the sixth outer cam block 360, the first outer guide groove 302 and the second outer guide groove 304 are formed in the shape of The shape is formed, and the third outer guide groove 306 and the fourth outer guide groove 308 are formed in the shape of The shape is formed.

[0057] The inner needle cam 600 has a first inner guide groove 602 and a second inner guide groove 604 on one surface, which are formed to communicate with each other left and right at a predetermined interval in the depth direction. The first inner guide member 414 of the inner and outer needle 410 is inserted into the first inner guide groove 602, and the second inner guide member 424 of the inner inner needle 420 is inserted into the second inner guide groove 604. Thus, when the inner needle cam 600 rotates and the inner and outer needle 410 and the inner inner needle 420 operate back and forth along the corresponding first inner guide groove 602 and second inner guide groove 604 respectively, a knitting operation is performed.

[0058] To further describe the inner needle cam 600, the inner needle cam 600 includes a first inner cam block 610, a second inner cam block 620, a third inner cam block 630, a fourth inner cam block 640, a fifth inner cam block 650, and a sixth inner cam block 660 arranged from right to left, and several groups are connected to form an annular inner needle cam 600.

[0059] In the first inner cam block 610, the first inner guide groove 602 is formed in the shape of The shape is formed, and the second inner guide groove 604 is formed in the shape of In the second inner cam block 620, the first inner guide groove 602 is formed in the shape of The shape is formed, and the second inner guide groove 604 is formed in the shape of is formed in the shape of. In the third inner cam block 630, the first inner guiding groove 602 is formed in the shape of and the second inner guiding groove 604 is formed in the shape of In the fourth inner cam block 640, the first inner guiding groove 602 is formed in the shape of and the second inner guiding groove 604 is formed in the shape of In the fifth inner cam block 650, the first inner guiding groove 602 is formed in the shape of and the second inner guiding groove 604 is formed in the shape of In the sixth inner cam block 660, the first inner guiding groove 602 and the second inner guiding groove 604 are formed in the shape of .

[0060] As shown successively with reference to Figure 8 and Figure 9 it will be described below how the first outer needle 110 and the second outer needle 140 operate up and down along the first outer guiding groove 302, the second outer guiding groove 304, the third outer guiding groove 306, and the fourth outer guiding groove 308 of the outer needle cam 300, and how the inner needle 400 operates up and down along the first inner guiding groove 602 and the second inner guiding groove 604 of the inner needle cam 600.

[0061] How to operate the first outer needle 110 and the second outer needle 140 along the outer needle cam 300 will be described successively from the first outer cam block 310 to the sixth outer cam block 360.

[0062] When the first outer needle 110 and the second outer needle 140 pass through the first outer cam block 310, the first outer outer needle 120 and the second outer outer needle 150 are guided along the third outer guiding groove 306 and the fourth outer guiding groove 308 corresponding to them respectively, and rotate together with the outer cylinder 200, while the first outer inner needle 130 and the second outer inner needle 160 rotate together with the outer cylinder 200 and operate up and down along the first outer guiding groove 302 and the second outer guiding groove 304 corresponding to them respectively to knit the bottom knitting yarn to knit the outer bottom 12.

[0063] When the first outer needle 110 and the second outer needle 140 pass through the second outer cam block 320, the first outer outer needle 120 and the second outer outer needle 150 are guided along the third outer guiding groove 306 and the fourth outer guiding groove 308 corresponding to them respectively, and rotate together with the outer cylinder 200, while the first outer inner needle 130 and the second outer inner needle 160 rotate together with the outer cylinder 200 and operate up and down along the first outer guiding groove 302 and the second outer guiding groove 304 corresponding to them respectively to knit the tuck knitting yarn to knit the tuck portion 16.

[0064] When the first outer needle 110 and the second outer needle 140 pass through the third outer cam block 330, the first outer outer needle 120, the second outer outer needle 150, the first outer inner needle 130, and the second outer inner needle 160 are guided along the first outer guide groove 302, the second outer guide groove 304, the third outer guide groove 306, and the fourth outer guide groove 308 corresponding to them respectively, and rotate together with the outer cylinder 200 without reciprocating operation.

[0065] When the first outer needle 110 and the second outer needle 140 pass through the fourth outer cam block 340, the first outer inner needle 130 and the second outer inner needle 160 are guided along the first outer guide groove 302 and the second outer guide groove 304 corresponding to them respectively, and rotate together with the outer cylinder 200, while the first outer outer needle 120 and the second outer outer needle 150 rotate together with the outer cylinder 200 and move up and down along the third outer guide groove 306 and the fourth outer guide groove 308 corresponding to them respectively, so as to pull and knit the plush knitting yarn into the outer bottom 12.

[0066] When the first outer needle 110 and the second outer needle 140 pass through the fifth outer cam block 350, the first outer outer needle 120 and the second outer outer needle 150 are guided along the third outer guide groove 306 and the fourth outer guide groove 308 corresponding to them respectively, and rotate together with the outer cylinder 200 respectively, while the first outer inner needle 130 and the second outer inner needle 160 rotate together with the outer cylinder 200 and rise along the first outer guide groove 302 and the second outer guide groove 304 corresponding to them respectively, so as to cut the plush knitting yarn to form the inner plush 30, and also move up and down to knit another bottom knitting yarn to knit the outer bottom 12. In other words, the outer needle 100 performs cutting the plush knitting yarn and knitting the inner bottom 14 together on the fifth outer cam block 350.

[0067] When the first outer needle 110 and the second outer needle 140 pass through the sixth outer cam block 360, the first outer inner needle 130 and the second outer inner needle 160 are guided along the first outer guide groove 302 and the second outer guide groove 304 corresponding to them respectively, and rotate together with the outer cylinder 200, while the first outer outer needle 120 and the second outer outer needle 150 rotate together with the outer cylinder 200 and move further downward along the third outer guide groove 306 and the fourth outer guide groove 308 corresponding to them respectively, so as to escape from the inner plush 30.

[0068] The first outer needle 110 and the second outer needle 140 operate successively along the first outer guide groove 302 to the fourth outer guide groove 308 from the first outer cam block 310 to the sixth outer cam block 360, so as to repeatedly perform knitting the outer bottom 12, forming the tuck part 16, pulling and knitting the knitting yarn into the outer bottom 12, cutting the yarn to form the inner plush 30, and knitting the outer bottom 12 again.

[0069] How the inner needle operates along the inner needle cam 600 will be described in sequence from the first inner cam block 610 to the sixth inner cam block 660.

[0070] When the inner needle 400 passes through the first inner cam block 610, the inner-inner needle 420 is guided along the second inner guiding groove 604 and rotates together with the inner cylinder 500, while the inner-outer needle 410 is guided along the first inner guiding groove 602, rotates together with the inner cylinder 500, and operates back and forth along the first inner guiding groove 602 to pull and knit the plush knitting yarn into the inner bottom 14.

[0071] When the inner needle 400 passes through the second inner cam block 620, the inner-outer needle 410 is guided along the first inner guiding groove 602 and rotates together with the inner cylinder 500, while the inner-inner needle 420 is guided along the second inner guiding groove 604, rotates together with the inner cylinder 500, moves forward along the second inner guiding groove 604 to cut the plush knitting yarn to construct the outer plush 20, and operates back and forth to knit the bottom knitting yarn to knit the inner bottom 14. In other words, the inner needle 400 performs both cutting the plush knitting yarn and knitting the inner bottom 14 on the second inner cam block 620.

[0072] When the inner needle 400 passes through the third inner cam block 630, the inner-inner needle 420 is guided along the second inner guiding groove 604 and rotates together with the inner cylinder 500, while the inner-outer needle 410 is guided along the first inner guiding groove 602, rotates together with the inner cylinder 500, and further moves backward along the first inner guiding groove 602 to escape from the outer plush 20.

[0073] When the inner needle 400 passes through the fourth inner cam block 640, the inner-outer needle 410 is guided along the first inner guiding groove 602 and rotates together with the inner cylinder 500, while the inner-inner needle 420 is guided along the second inner guiding groove 604, rotates together with the inner cylinder 500, and operates back and forth along the second inner guiding groove 604 to knit the bottom knitting yarn to knit the inner bottom 14.

[0074] When the inner needle 400 passes through the fifth inner cam block 650, the inner-outer needle 410 is guided along the first inner guiding groove 602 and rotates together with the inner cylinder 500, while the inner-inner needle 420 is guided along the second inner guiding groove 604, rotates together with the inner cylinder 500, and operates back and forth along the second inner guiding groove 604 to knit the tuck knitting yarn to knit the tuck part 16.

[0075] When the inner needle 400 passes through the sixth inner cam block 660, the inner-outer needle 410 and the inner-inner needle 420 are guided along the corresponding first inner guiding groove 602 and second inner guiding groove 604 respectively, and rotate together with the inner cylinder 500.

[0076] The inner needle 400 operates sequentially from the first inner cam block 610 to the sixth inner cam block 660 along the first inner guiding groove 602 and the second inner guiding groove 604 to repeatedly perform pulling and knitting the knitting yarn into the inner bottom 14, cutting to construct the outer fluff 20, knitting the inner bottom 14, and manufacturing the tuck part 16.

[0077] On the other hand, referring to Figure 3 , Figure 6 and Figure 7 , the outer cylinder 200 of the present invention is installed to rotate by receiving separate power (not shown), and a plurality of outer needle guiding grooves 210 are formed and radially arranged on one surface. The first outer needle 110 and the second outer needle 140 are alternately installed in the corresponding outer needle guiding grooves 210 and rotate together with the outer cylinder 200 to operate up and down along the outer needle guiding grooves 210. The outer needle guiding grooves 210 are formed with outer fluff discharge holes 220 penetrating in one direction at the upper part. As will be described later, when the first outer blade 136 of the first outer inner needle 130 and the second outer blade 166 of the second outer inner needle 160 cut the knitting yarn to construct the outer fluff 20, the fluff can be discharged through the outer fluff discharge holes 220. When the velvet with the outer fluff 20 is knitted and discharged into the space formed between the outer cylinder 200 and the inner cylinder 500, the outer fluff 20 is immediately discharged through the outer fluff discharge holes 220; therefore, no entanglement occurs between the outer fluff and other knitting yarns during knitting.

[0078] The inner cylinder 500 of the present invention is installed to rotate by receiving separate power (not shown), and a plurality of inner needle guiding grooves 510 are formed and radially arranged on the upper surface. The inner needles 400 are installed in the corresponding inner needle guiding grooves 510 and rotate together with the inner cylinder 500 to operate back and forth along the inner needle guiding grooves 510. The inner needle guiding grooves 510 are formed with inner fluff discharge holes 520 penetrating in one direction at the front part. As will be described later, when the inner blade 426 of the inner inner needle 420 cuts the knitting yarn to construct the inner fluff 30, the fluff can be discharged through the inner fluff discharge holes 520. When the velvet with the inner fluff 30 is knitted and discharged into the space formed between the outer cylinder 200 and the inner cylinder 500, the inner fluff 30 is immediately discharged through the inner fluff discharge holes 520; therefore, no entanglement occurs between the inner fluff and other knitting yarns during knitting.

[0079] A method of knitting a flocked velvet by the circular knitting machine constructed as described above according to the present invention will be described below.

[0080] Referring to Figure 3 , Figure 8 and Figure 9, according to the circular knitting machine of the present invention, the outer needles 100 and the inner needles 400 are rotated in one direction by rotating the outer cylinder 200 and the inner cylinder 500. The outer needles 100 operate up and down along the first outer guiding groove 302 to the fourth outer guiding groove 308 of the outer needle cam 300, and the inner needles 400 operate back and forth along the first inner guiding groove 602 and the second inner guiding groove 604 of the inner needle cam 600, thereby knitting a raised velvet.

[0081] That is to say, the outer needles 100 operate up and down to knit the knitting yarn to form the outer bottom 12, knit the outer bottom 12 and the inner bottom 14 with the tuck knitting yarn to manufacture the tuck part 16, pull and knit the plush knitting yarn into the outer bottom 12, and cut the yarn to construct the inner plush 30. The inner needles 400 operate back and forth to knit the knitting yarn to form the inner bottom 14, knit the inner bottom 14 and the outer bottom 12 with the tuck knitting yarn to manufacture the tuck part 16, pull and knit the plush knitting yarn into the inner bottom 14, and cut the yarn to construct the outer plush 20. Since these operations are carried out repeatedly and alternately, the raised velvet is knitted as Figure 10 shown.

[0082] For better understanding, when the first outer needle 110 and the second outer needle 140 pass through the first outer cam block 310, the first outer inner needle 130 and the second outer inner needle 160 operate up and down to knit the bottom knitting yarn to knit the outer bottom 12. When the first outer needle 110 and the second outer needle 140 pass through the second outer cam block 320, the first outer inner needle 130 and the second outer inner needle 160 operate up and down to knit the tuck knitting yarn to knit the tuck part 16. When the first outer needle 110 and the second outer needle 140 pass through the third outer cam block 330, no knitting operation is performed. When the first outer needle 110 and the second outer needle 140 pass through the fourth outer cam block 340, the first outer outer needle 120 and the second outer outer needle 150 operate up and down to pull and knit the plush knitting yarn into the outer bottom 12. When the first outer needle 110 and the second outer needle 140 pass through the fifth outer cam block 350, the first outer inner needle 130 and the second outer inner needle 160 rise to cut the plush knitting yarn to construct the inner plush 30, and also operate up and down to knit another bottom knitting yarn to knit the outer bottom 12. When the first outer needle 110 and the second outer needle 140 pass through the sixth outer cam block 360, the first outer outer needle 120 and the second outer outer needle 150 travel down and up to completely escape from the inner plush 30.

[0083] When the inner needle 400 passes through the first inner cam block 610, the inner and outer needles 410 operate back and forth to pull and knit the plush knitting yarn into the inner bottom 14. When the inner needle 400 passes through the second inner cam block 620, the inner-inner needle 420 moves forward to cut the plush knitting yarn to construct the outer plush 20, and operates back and forth to knit the bottom knitting yarn to knit the inner bottom 14. When the inner needle 400 passes through the third inner cam block 630, the inner and outer needles 410 move further backward to completely escape from the outer plush 20. When the inner needle 400 passes through the fourth inner cam block 640, the inner-inner needle 420 operates back and forth to knit the bottom knitting yarn to knit the inner bottom 14. When the inner needle 400 passes through the fifth inner cam block 650, the inner-inner needle 420 operates back and forth to knit the tuck knitting yarn to knit the tuck part 16. When the inner needle 400 passes through the sixth inner cam block 660, no knitting operation is performed.

[0084] The first outer needle 110 and the second outer needle 140 operate up and down, repeating to knit the outer bottom 12, form the tuck part 16, pull and knit the knitting yarn into the outer bottom 12, cut the yarn to construct the inner plush 30, and knit the outer bottom 12 again. The inner needle 400 operates back and forth to repeatedly pull and knit the knitting yarn into the inner bottom 14, cut to construct the outer plush 20, knit the inner bottom 14, and manufacture the tuck part 16. By alternately performing these repeated operations, the raised velvet is knitted.

[0085] In the present invention, when the first outer needle 110 and the second outer needle 140 pass through the fourth outer cam block 340, the inner plush 30 is constructed when they pull down the plush knitting yarn. At this time, the length of the pulled plush knitting yarn is adjusted according to the decreasing lengths of the third outer guiding groove 306 and the fourth outer guiding groove 308 to determine the length of the inner plush. When the inner needle 400 passes through the first inner cam block 610, the outer plush 20 is constructed when it pulls down the plush knitting yarn. At this time, the length of the pulled plush knitting yarn is adjusted according to the backward length of the first inner guiding groove 602 to determine the length of the outer plush 20. In other words, if the knitting yarn is pulled a lot, the plush length will increase, and if the knitting yarn is pulled little, the plush length will be shortened. Therefore, the plush length can be freely adjusted within the range of 1.5 mm to 10 mm according to the degree of pulling the knitting yarn.

[0086] In the present invention, the plush is constructed by pulling and cutting the knitting yarn, so the plush can always be constructed with the same length and without irregularities.

[0087] As described above, the present invention has been described with reference to the specific embodiments, but those skilled in the art should understand that various modifications and changes are available without departing from the spirit and scope of the present invention defined by the appended claims.

[0088] Industrial applicability

[0089] The present invention has industrial applicability because the present invention is a circular knitting machine for velvet for raising, in which by improving the knitting unit, in particular the needles and the needle cams, when knitting velvet, the pile is automatically formed on both bottom surfaces.

Claims

1. A circular knitting machine for knitting a napped velvet, Among them, When a plurality of knitting yarns are supplied to a knitting unit through a knitting yarn supply unit, the outer needles rotate together with an outer cylinder in the knitting unit and move up and down along an outer needle cam, the inner needles rotate together with an inner cylinder and move back and forth along an inner needle cam, and the napped velvet is knitted by knitting the knitting yarns supplied by the outer needles and the inner needles for knitting. Wherein, the outer needles are divided into first outer needles and second outer needles which are alternately installed. Wherein, the first outer needle is composed of a first outer outer needle and a first outer inner needle as a group. A first outer needle insertion slit which is opened in the front, upper and lower parts in the longitudinal direction is formed in the middle of the first outer outer needle, so that the first outer inner needle can move back and forth when being inserted into the first outer needle insertion slit. A first outer hook is formed at the end of the first outer outer needle, a first outer latch is formed at the end of the first outer inner needle to pull the knitting yarn, a first outer guide is formed to protrude upward in the middle of the upper surface of the first outer inner needle, a third outer guide is formed to protrude upward between the middle and the rear of the upper surface of the first outer outer needle, and a first outer knife is formed to protrude upward on the upper surface of the first outer inner needle between the first outer guide and the first outer latch and is configured to cut the knitting yarn when moving forward. Wherein, the second outer needle is composed of a second outer outer needle and a second outer inner needle as a group. A second outer needle insertion slit which is opened in the front, upper and lower parts in the longitudinal direction is formed in the middle of the second outer outer needle, so that the second outer inner needle can move back and forth when being inserted into the second outer needle insertion slit. A second outer hook is formed at the end of the second outer outer needle, a second outer latch is formed at the end of the second outer inner needle to pull the knitting yarn, a second outer guide is formed to protrude upward in the rear direction of the upper surface of the second outer inner needle, a fourth outer guide is formed to protrude upward in the rear direction of the upper surface of the second outer outer needle, and a second outer knife is formed to protrude upward on the upper surface of the second outer inner needle between the second outer guide and the second outer latch and is configured to cut the knitting yarn when moving forward. Wherein, the inner needle is composed of two inner-outer needles and an inner-inner needle as a group. The two inner-outer needles are arranged at intervals from each other, the inner-inner needle is inserted between the inner-outer needles to move back and forth. An inner hook is formed at the end of the inner-outer needle, an inner latch is formed at the end of the inner-inner needle to pull the knitting yarn, a first inner guide is formed to protrude upward in the rear direction of the upper surface of the inner-outer needle, a second inner guide is formed to protrude upward between the middle and the rear of the upper surface of the inner-inner needle, and an inner knife is formed to protrude upward on the upper surface of the inner-inner needle between the second inner guide and the inner latch and is configured to cut the knitting yarn when moving forward. Among them, the outer needle cam has a first outer guiding groove, a second outer guiding groove, a third outer guiding groove, and a fourth outer guiding groove on one surface. The first outer guiding groove, the second outer guiding groove, the third outer guiding groove, and the fourth outer guiding groove are formed to communicate with each other left and right at a predetermined interval in the vertical direction. The first outer guiding member of the first outer inner needle is inserted into the first outer guiding groove, the second outer guiding member of the second outer inner needle is inserted into the second outer guiding groove, the third outer guiding member of the first outer outer needle is inserted into the third outer guiding groove, and the fourth outer guiding member of the second outer outer needle is inserted into the fourth outer guiding groove. Thus, when the outer needle cam rotates and the first outer inner needle, the first outer outer needle, the second outer inner needle, and the second outer outer needle operate up and down along their corresponding first outer guiding groove, second outer guiding groove, third outer guiding groove, and fourth outer guiding groove respectively, a knitting operation is performed. Among them, the inner needle cam has a first inner guiding groove and a second inner guiding groove on one surface. The first inner guiding groove and the second inner guiding groove are formed to communicate with each other left and right at a predetermined interval in the depth direction. The first inner guiding member of the inner and outer needle is inserted into the first inner guiding groove, and the second inner guiding member of the inner and outer needle is inserted into the second inner guiding groove. Thus, when the inner needle cam rotates and the inner and outer needle and the inner inner needle operate back and forth along their corresponding first inner guiding groove and second inner guiding groove respectively, a knitting operation is performed. Among them, when the first outer inner needle and the second outer inner needle move along the outer needle cam and operate up and down in some sections, the outer bottom is knitted, and the outer bottom and the inner bottom are knitted to form a tuck stitch portion; when the inner inner needle moves along the inner needle cam and operates back and forth in some sections, the inner bottom is knitted, and the inner bottom and the outer bottom are knitted to form the tuck stitch portion; when the first outer outer needle and the second outer outer needle move along the outer needle cam and operate up and down in some sections, the plush knitting yarn is pulled and knitted into the outer bottom, and the first outer inner needle and the second outer inner needle rise to cut the corresponding plush knitting yarn to form inner plush; and when the first outer outer needle and the second outer outer needle move along the outer needle cam and operate back and forth in some sections, the plush knitting yarn is pulled and knitted into the inner bottom, and the inner inner needle moves forward to cut the plush knitting yarn to form outer plush, so that the plush is automatically formed on both sides of the velvet when knitting the velvet.

2. The circular knitting machine according to claim 1, wherein The outer needle cam includes a first outer cam block, a second outer cam block, a third outer cam block, a fourth outer cam block, a fifth outer cam block, and a sixth outer cam block arranged from right to left, and several groups are connected to form the annular outer needle cam. In the first outer cam block, the first outer guiding groove and the second outer guiding groove are formed in the shape of , and the third outer guiding groove and the fourth outer guiding groove are formed in the shape of ; In the second outer cam block, the first outer guiding groove and the second outer guiding groove are formed in the shape of , and the third outer guiding groove and the fourth outer guiding groove are formed in the shape of ; In the third outer cam block, the first outer guiding groove to the fourth outer guiding groove are formed in the shape of : In the fourth outer cam block, the first outer guiding groove and the second outer guiding groove are formed in the shape of , and the third outer guiding groove and the fourth outer guiding groove are formed in the shape of ; In the fifth outer cam block, the first outer guiding groove and the second outer guiding groove are formed in the shape of , and the third outer guiding groove and the fourth outer guiding groove are formed in the shape of . In the sixth outer cam block, the first outer guiding groove and the second outer guiding groove are formed in the shape of , and the third outer guiding groove and the fourth outer guiding groove are formed in the shape of ; When the first outer needle and the second outer needle pass through the first outer cam block, the first outer-outer needle and the second outer-outer needle are guided along the third outer guiding groove and the fourth outer guiding groove respectively corresponding thereto, and rotate together with the outer cylinder, while the first outer-inner needle and the second outer-inner needle rotate together with the outer cylinder and move up and down along the first outer guiding groove and the second outer guiding groove respectively corresponding thereto to knit the bottom knitting yarn to knit the outer bottom; When the first outer needle and the second outer needle pass through the second outer cam block, the first outer-outer needle and the second outer-outer needle are guided along the third outer guiding groove and the fourth outer guiding groove respectively corresponding thereto, and rotate together with the outer cylinder, while the first outer-inner needle and the second outer-inner needle rotate together with the outer cylinder and move up and down along the first outer guiding groove and the second outer guiding groove respectively corresponding thereto to knit the tuck knitting yarn to knit the tuck part; When the first outer needle and the second outer needle pass through the third outer cam block, the first outer-outer needle, the second outer-outer needle, the first outer-inner needle and the second outer-inner needle are guided along the first outer guiding groove, the second outer guiding groove, the third outer guiding groove and the fourth outer guiding groove respectively corresponding thereto, and rotate together with the outer cylinder without reciprocating operation; When the first outer needle and the second outer needle pass through the fourth outer cam block, the first outer-inner needle and the second outer-inner needle are guided along the first outer guiding groove and the second outer guiding groove respectively corresponding thereto, and rotate together with the outer cylinder, while the first outer-outer needle and the second outer-outer needle rotate together with the outer cylinder and move up and down along the third outer guiding groove and the fourth outer guiding groove respectively corresponding thereto to pull and knit the plush knitting yarn into the outer bottom; When the first outer needle and the second outer needle pass through the fifth outer cam block, the first outer-outer needle and the second outer-outer needle are guided along the third outer guiding groove and the fourth outer guiding groove respectively corresponding thereto, and rotate together with the outer cylinder, while the first outer-inner needle and the second outer-inner needle rotate together with the outer cylinder, rise along the first outer guiding groove and the second outer guiding groove respectively corresponding thereto to cut the plush knitting yarn to construct the inner plush, and also move up and down to knit another bottom knitting yarn to knit the outer bottom; and When the first outer needle and the second outer needle pass through the sixth outer cam block, the first outer-inner needle and the second outer-inner needle are guided along the first outer guiding groove and the second outer guiding groove respectively corresponding thereto, and rotate together with the outer cylinder, while the first outer-outer needle and the second outer-outer needle rotate together with the outer cylinder and move further downward along the third outer guiding groove and the fourth outer guiding groove respectively corresponding thereto to escape from the inner plush.

3. The circular knitting machine according to claim 1, wherein, The inner needle cam includes a first inner cam block, a second inner cam block, a third inner cam block, a fourth inner cam block, a fifth inner cam block, and a sixth inner cam block arranged from right to left, and several groups are connected to form the annular inner needle cam. In the first inner cam block, the first inner guiding groove is formed in the shape of and the second inner guiding groove is formed in the shape of . In the second inner cam block, the first inner guiding groove is formed in the shape of and the second inner guiding groove is formed in the shape of . In the third inner cam block, the first inner guiding groove is formed in the shape of and the second inner guiding groove is formed in the shape of . In the fourth inner cam block, the first inner guiding groove is formed in the shape of , and the second inner guiding groove is formed in the shape of . In the fifth inner cam block, the first inner guiding groove is formed in the shape of and the second inner guiding groove is formed in the shape of ; In the sixth inner cam block, the first inner guiding groove and the second inner guiding groove are formed in the shape of . When the inner needle passes through the first inner cam block, the inner-inner needle is guided along the second inner guiding groove and rotates with the inner cylinder, while the inner-outer needle is guided along the first inner guiding groove, rotates with the inner cylinder, and moves back and forth along the first inner guiding groove to pull and knit the plush knitting yarn into the inner bottom. When the inner needle passes through the second inner cam block, the inner-outer needle is guided along the first inner guiding groove and rotates with the inner cylinder, while the inner-inner needle is guided along the second inner guiding groove, rotates with the inner cylinder, moves forward along the first inner guiding groove to cut the plush knitting yarn to construct the outer plush, and moves back and forth to knit the bottom knitting yarn to knit the inner bottom. When the inner needle passes through the third inner cam block, the inner-inner needle is guided along the second inner guiding groove and rotates with the inner cylinder, while the inner-outer needle is guided along the first inner guiding groove, rotates with the inner cylinder, and further moves backward along the first inner guiding groove to escape from the outer plush. When the inner needle passes through the fourth inner cam block, the inner-outer needle is guided along the first inner guiding groove and rotates with the inner cylinder, while the inner-inner needle is guided along the second inner guiding groove, rotates with the inner cylinder, and moves back and forth along the second inner guiding groove to knit the bottom knitting yarn to knit the inner bottom. When the inner needle passes through the fifth inner cam block, the inner-outer needle is guided along the first inner guiding groove and rotates with the inner cylinder, while the inner-inner needle is guided along the second inner guiding groove, rotates with the inner cylinder, and moves back and forth along the second inner guiding groove to knit the tuck knitting yarn to knit the tuck part; and When the inner needle passes through the sixth inner cam block, the inner-outer needle and the inner-inner needle are guided along the corresponding first inner guiding groove and second inner guiding groove respectively, and rotate with the inner cylinder.

4. A circular knitting machine for knitting raised velvet Among them, When a plurality of knitting yarns are supplied to the knitting unit through the knitting yarn supply unit, the outer needle rotates with the outer cylinder in the knitting unit and moves up and down along the outer needle cam, the inner needle rotates with the inner cylinder and moves back and forth along the inner needle cam, and the raised velvet is knitted by knitting the knitting yarns supplied by the outer needle and the inner needle. Wherein, the outer needle is divided into a first outer needle and a second outer needle which are alternately installed, the first outer needle is composed of a first outer-outer needle and a first outer-inner needle as a group, and the second outer needle is composed of a second outer-outer needle and a second outer-inner needle as a group. Wherein, the inner needle is composed of an inner-outer needle and an inner-inner needle as a group. Among them, when the first outer-inner needle and the second outer-inner needle move along the outer needle cam and operate up and down in some sections, the outer bottom is knitted, and the outer bottom and the inner bottom are knitted to knit the tuck part; when the inner-inner needle moves along the inner needle cam and operates back and forth in some sections, the inner bottom is knitted, and the inner bottom and the outer bottom are knitted to knit the tuck part; when the first outer-outer needle and the second outer-outer needle move along the outer needle cam and operate up and down in some sections, the plush knitting yarn is pulled and knitted into the outer bottom, and the first outer-inner needle and the second outer-inner needle are raised to cut the corresponding plush knitting yarn to construct the inner plush; and when the first outer-outer needle and the second outer-outer needle move along the outer needle cam and operate back and forth in some sections, the plush knitting yarn is pulled and knitted into the inner bottom, and the inner-inner needle moves forward to cut the plush knitting yarn to form the outer plush, so that the plush is automatically constructed on both sides of the velvet when the velvet is knitted.

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