JP2014062339A - Fine needle pitch circular knitting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fine needle pitch circular knitting machine.SOLUTION: A fine needle pitch circular knitting machine includes: a circular cylinder; and a sinker holder annularly provided on the outside of the circular cylinder. The circular cylinder includes: a plurality of needles which are arranged in parallel in the axial direction of the circular cylinder and alternately operate; and an annular top surface corresponding to the arrangement direction of the needles. The sinker holder includes: a plurality of position restriction grooves; and a plurality of sinkers provided in the position restriction grooves. Each sinker includes: a slide edge; a movable edge which is extended at the same height from the slide edge toward the annular top surface and provided above the annular top surface; and a loop forming nose part passed between two of the needles. Each position restriction groove includes a contact surface which is in contact with the slide edge, and which stabilizes a loop forming stroke of the sinker moving toward the annular top surface.

Description

  The present invention relates to a kind of circular knitting machine, and more particularly to a kind of fine needle pitch circular knitting machine.

  A traditional circular knitting machine includes a circular cylinder in which a plurality of vertical needles are installed, and an annular sinker sheet installed at the periphery of the circular cylinder. The annular sinker sheet is provided with a sinker that moves in a direction opposite to the circular cylinder. These needles and sinkers move alternately under the push of the corresponding drive cams, and pull the yarn. Knitting fabric.

  In recent years, in order to improve the quality and feel of knitted products, a fine needle pitch circular knitting machine having a high needle number was finally developed. For example, Patent Document 1 describes a high gauge pitch knitting machine, which is a needle holder. The needle holder supports a plurality of needles, and the needles are actuated to move along the axis thereof, and the guide parts for guiding the needles on the needle holder are included.

  Each needle is actuated to move along the axis of the needle holder with respect to the needle holder, and the needle moves together with a part of the needle tip and the needle handle by the extraction movement of the alternating movement. The loop formed previously is dropped on the needle handle and / or one or a plurality of yarns arranged in the yarn feeding portion or the yarn guide port of the device are picked up. Due to the retraction movement of the alternating movement, the needle joins the needle tip and retracts into the end of the needle holder to form a new loop, thus performing a detachment from the previously formed loop; Form a knitted fabric.

  The guide part has a channel for forming a knitted fabric and a slide channel. A channel for forming the knitted fabric is defined at the end adjacent to the needle holder. The slide channels are each defined in an area on the needle holder that is isolated from the end of the needle holder. Each of these channels for knitting is joined by a needle and guides it to the outer entrance of the needle holder, defining a support contact area of the knitting during the retraction movement of the needle, The number of channels is smaller than the number of these channels forming the knitted fabric.

  In a traditional circular knitting machine, in order to stably move the sinker horizontally and reciprocally, a plurality of receiving grooves for installing the sinker body on the annular sinker sheet, and also on the circular cylinder from the sinker body A positioning groove for the nose that extends toward the upper knitting position is opened. The aforementioned high needle number circular knitting machine needs to reduce the distance between the needles or between the sinkers, or the thickness of the needles and sinkers simultaneously with the increase in the number of needles. The distance between the positioning grooves to be inserted is also shortened.

  Accordingly, it is considerably difficult to process a large number of narrow pitch positioning grooves on a metal circular cylinder corresponding to the high needle number technique, and the production yield is considerably reduced. Furthermore, the sinker comes into contact with the inner wall of the positioning groove by a slight crossing, and when the circular knitting machine performs the knitting operation, the structure of these thinned sinkers is easily damaged and deformed by high temperature friction, The sinker that has been damaged regularly must be replaced, which consumes a lot of time and replacement costs.

  On the other hand, when mounting a thinner sinker, it is necessary to align a large number of sinkers and positioning grooves of a circular cylinder accurately one by one, and it is necessary to spend a considerable amount of time and there is an error in installation. In other words, it is necessary to re-install with extra time, which is disadvantageous in terms of production efficiency of the entire high needle number circular knitting machine.

World Patent Application No. WO202055551

  The main object of the present invention is to solve the assembly effects and inconveniences that occur in actual knitted products by processing a large number of positioning grooves on a circular cylinder in a traditional high needle number circular knitting machine. It is in.

  In order to achieve the above-mentioned object, the present invention provides a kind of fine needle pitch circular knitting machine, which includes a circular cylinder and a sinker fixing seat provided annularly on the outside of the circular cylinder. The circular cylinder corresponds to a needle installation surface, a plurality of needles installed on the needle installation surface and arranged in parallel along the axial direction of the circular cylinder and acting alternately, and the arrangement direction of these needles. And an annular upper surface having a bending angle with the needle installation surface.

  The sinker fixing seat includes a plurality of position limiting grooves and a plurality of sinkers respectively installed in the position limiting grooves. The sinker has a slide edge, a movable edge extending at an equal height from the slide edge toward the ring-shaped upper surface and installed above the ring-shaped upper surface, and a loop-forming nose passing between the two needles. Include. The position limiting groove includes an abutment surface that contacts the slide edge and stabilizes the loop forming process toward the annular upper surface of the sinker.

  The needle has a thickness of 0.15 to 0.3 mm, and the sinker has a thickness of 0.1 to 0.15 mm.

  In one embodiment, the circular cylinder includes a gap located between the movable edge and the annular top surface.

  In some embodiments, the tangent surface is higher than the annular top surface.

  In one embodiment, the distance between the needle and the sinker is 0.09 to 0.03 mm.

  In one embodiment, the needle mounting surface of the circular cylinder includes a plurality of fitting grooves parallel to the axial direction of the circular cylinder, a plurality of partition plates installed in the fitting groove, and two adjacent two It includes a space that is placed between the diaphragms to accommodate a single needle.

  In one embodiment, 40-80 needles per inch are arranged on the needle mounting surface of the circular cylinder.

  In one embodiment, the bending angle is 90 degrees.

  In certain embodiments, the sinker includes a first thickness section and a second thickness section that is thicker than the first thickness section.

  In one embodiment, the first thickness section is located at the top of the sinker and the second thickness section is located at the bottom of the sinker.

  The fine needle pitch circular knitting machine of the present invention does not require additional positioning grooves on the circular cylinder, reduces the possibility of damage due to high-temperature friction that may occur during knitting in the sinker, and extends the service life of the sinker. Furthermore, it significantly reduces the time and procedure for installing the sinker, and increases the production efficiency of the high needle round knitting machine. In addition, the bottom of the sinker has a contoured structure, which also increases the structural strength of the thinner sinker.

It is a local three-dimensional structure figure of the Example of the fine needle pitch circular knitting machine of this invention. It is a local plane structure figure of the Example of the fine needle pitch circular knitting machine of this invention. It is a partial cross-section figure of the Example of the fine needle pitch circular knitting machine of this invention. It is a structure display figure of the sinker of another Example of the fine needle pitch circular knitting machine of this invention.

  In order to describe in detail the technical contents, structural features, and objects to be achieved of the present invention, examples will be described below in combination with drawings.

  Please refer to FIG. 1, FIG. 2, and FIG. They are a local three-dimensional structure display diagram, a local sectional view and a local planar structure display diagram of the fine needle pitch circular knitting machine of the present invention. As shown in the drawing, the present invention is a kind of fine needle pitch circular knitting machine, which includes a circular cylinder 10 formed in the axial direction A and a sinker fixing seat 20 provided in an annular shape outside the circular cylinder 10. Include.

  The circular cylinder 10 includes a needle installation surface 11 installed outside the circular cylinder 10, a plurality of the cylinders 10 installed on the needle installation surface 11 and arranged in parallel with the axial direction A of the circular cylinder 10 and acting alternately. Needles 12 and ring-shaped upper surfaces 13 corresponding to the arrangement of these needles 12, and a bending angle α is formed between the ring-shaped upper surface 13 and the needle installation surface 11. In this embodiment, the annular upper surface 13 is perpendicular to the needle mounting surface 11, that is, the bending angle α is 90 degrees.

  The needle mounting surface 11 of the circular cylinder 10 is provided with a plurality of fitting grooves parallel to the axial direction A of the circular cylinder 10 so that the needles 12 can sufficiently operate smoothly on the needle mounting surface 11. 111, a plurality of partition plates 112 installed in the fitting groove 111, and a plurality of spaces 113 installed between two adjacent partition plates 112 to accommodate the single needle 12.

  The sinker fixing seat 20 includes a plurality of position limiting grooves 21 and a plurality of sinkers 22 respectively installed in the position limiting grooves 21.

  The sinker 22 intersects with a slide edge 221 installed at the bottom of the sinker 22, a movable edge 222 extending at an equal height from the slide edge 221 toward the annular upper surface 13, and the needle 12. It includes an active loop forming nose 223 and a guide connected to a drive cam (not shown) to push the sinker 22 and advance the loop forming process.

  In this embodiment, the guide portion includes a guide groove 224 into which the driving cam is inserted, a first contact edge 225 installed on one side of the guide groove 224 that approaches the loop forming nose portion 223, and The guide groove 224 includes a second contact edge 226 on one side facing the first contact edge 225.

  When the driving cam pushes the first abutting edge 225, the sinker 22 moves toward the annular upper surface 13. When the drive cam pushes the second abutment edge 226, the sinker 22 moves away from the annular upper surface 13 and thus constitutes a loop forming stroke.

  In addition, the position restricting groove 21 of the sinker fixing seat 20 includes a contact surface 211 that contacts the slide edge 221 and stably advances the loop forming process to the sinker 22.

  In order to reduce friction during the looping process of the sinker 22, in a preferred embodiment of the present invention, the circular cylinder 10 further includes a gap 14 disposed between the movable edge 222 of the sinker 22 and the annular top surface 13. To do. As a result, the sinker 22 does not directly contact the annular upper surface 13.

  In addition, in the sinker fixing seat 20, the contact surface 211 of the position limiting groove 21 is higher than the annular upper surface 13, and the movable edge is flush with the slide edge 221 when the sinker 22 proceeds through the loop forming process. The chance of 222 hitting the annular top surface 13 is reduced.

In the present invention, taking a circular knitting machine having a bottom diameter of 30 inches as an example, 40 to 80 needles 12 are arranged per British inch on the needle installation surface 11 of the circular cylinder 10. The relationship between the number of different needles 12 and the thickness of the needle 12, the thickness of the sinker 22, and the distance between the needle 12 and the sinker 22 is as shown in the following table.

  As can be seen from the table above, the thickness of the needle 12 is 0.15 to 0.3 mm, the thickness of the sinker is 0.1 to 0.15 mm, and the distance between the needle 12 and the sinker 22 is Is 0.09 to 0.03 mm.

  In the present invention, as shown in the above table, the sinker 22 has a uniform thickness as a whole, or the sinker 22 has a structure having at least two different thicknesses. In one embodiment, as shown in FIG. 4, the sinker 22 includes a first thickness section 227 and a second thickness section 228 that is thicker than the first thickness section 227. The first thickness section 227 is installed at the top of the sinker 22, and the second thickness section 228 is installed at the bottom of the sinker 22.

  Taken together, the fine needle pitch circular knitting machine of the present invention eliminates the traditional positioning groove installed above the circular cylinder and into which the sinker is inserted, so that the circular knitting machine sinker is constructed under a high needle number structure. On the other hand, the sinker of the present invention is thin by the structure that exhibits the same height of the slide edge of the position limiting groove of the sinker fixing seat and the movable edge extended in the direction of the upper surface of the ring shape. Increases the overall structural strength of the sinker after conversion. This effectively extends the service life of the sinker and reduces assembly time and procedures when assembling a high needle number circular knitting machine.

  The above description is only an example of the present invention, and does not limit the scope of the present invention. Any equivalent changes and modifications that can be made based on the scope of the claims of the present invention are all described in the present invention. Shall belong to the scope covered by the rights.

DESCRIPTION OF SYMBOLS 10 Circular cylinder 20 Sinker fixed seat 11 Needle installation surface 12 Needle 13 Ring-shaped upper surface 111 Fitting groove 112 Separator plate 113 Space 21 Position restriction groove 22 Sinker 221 Slide edge 222 Moving edge 223 Loop formation nose part 224 Guide groove 225 First contact edge 226 Second contact edge 211 Contact surface 227 First thickness section 228 Second thickness section

Claims (9)

In fine needle pitch circular knitting machines,
A circular cylinder, corresponding to the needle installation surface, a plurality of needles installed on the needle installation surface and arranged in parallel along the axial direction of the circular cylinder and acting alternately; And the circular cylinder including an annular upper surface exhibiting a predetermined bending angle with the needle installation surface;
A sinker fixed seat, which is annularly provided outside the circular cylinder, and includes a plurality of position limiting grooves and a plurality of sinkers respectively installed in the position limiting grooves; A position-adjusting groove including a movable edge extending at an equal height from the sliding edge toward the upper surface of the ring shape and installed above the upper surface of the ring shape, and a loop-forming nose passing between the two needles Including a contact surface that contacts the slide edge and stabilizes a loop forming process toward the annular upper surface of the sinker;
A fine needle pitch circular knitting machine characterized in that the needle has a thickness of 0.15 to 0.3 mm and the sinker has a thickness of 0.1 to 0.15 mm.   2. The fine needle pitch circular knitting machine according to claim 1, wherein the circular cylinder includes a gap disposed between the movable edge and the annular upper surface.   2. The fine needle pitch circular knitting machine according to claim 1, wherein the contact surface is higher than the annular upper surface.   2. The fine needle pitch circular knitting machine according to claim 1, wherein a distance between the needle and the sinker is 0.09 to 0.03 mm.   2. The fine needle pitch circular knitting machine according to claim 1, wherein the needle installation surface of the circular cylinder has a plurality of fitting grooves parallel to the axial direction of the circular cylinder, a plurality of partition plates installed in the fitting grooves, A fine needle pitch circular knitting machine comprising a plurality of spaces installed between two adjacent partition plates to accommodate a single needle.   2. The fine needle pitch circular knitting machine according to claim 1, wherein 40 to 80 needles are arranged per British inch on the needle installation surface of the circular cylinder.   2. The fine needle pitch circular knitting machine according to claim 1, wherein the bending angle is 90 degrees.   The fine needle pitch circular knitting machine according to claim 1, wherein the sinker includes a first thickness section and a second thickness section that is thicker than the first thickness section. knitting machine.   9. The fine needle pitch circular knitting machine according to claim 8, wherein the first thickness section is located at an upper portion of the sinker and the second thickness section is located at a lower portion of the sinker. knitting machine.

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