Seam gear disc for sock sewing machine

Abstract

The present invention discloses a sewing toothed disc for a sock sewing machine, comprising a fixed half-toothed frame and a flip half-toothed frame, both of which have two states: unfolded into a ring and stacked into two half-rings; a first type of sewing toothed needle is installed on the fixed half-toothed frame, which can swing at a certain angle relative to the edge of the fixed half-toothed frame to change the angle between it and the axis of the sewing toothed disc; a second type of sewing toothed needle is installed on the flip half-toothed frame, and is fixedly installed on the flip half-toothed frame; an elastic ring is provided on the periphery of the sewing toothed disc, and the first type of sewing toothed needle is subjected to pressure from the elastic ring on the side facing away from the axis of the sewing toothed disc, and the direction of the pressure points to the axis of the sewing toothed disc. In the present invention, when the flip half-toothed frame is stacked, the tip of one needle tip falls on the arc surface of another needle tip, which will not affect the subsequent step of overlapping the two coils, and avoids the damage caused by the direct collision of the needle tips.

Description

Technical Field

[0001] The present invention belongs to the technical field of knitting machinery, and in particular relates to a sewing toothed disc for a sock sewing machine. Generally speaking, a sock sewing machine is a part of a knitting and sewing integrated sock machine and needs to use a sewing toothed disc. Background Art

[0002] The mainstream sock machines at present are smart sock machines, that is, smart sock machines that automatically sew after knitting. There are both weaving, sewing and turning all-in-one sock machines that can turn over the socks while sewing, and weaving and sewing all-in-one sock machines that can be unloaded with the inside facing out after sewing. The basic structure of this smart sock machine is to combine a sock knitting machine and a sock sewing machine into one. After the socks are knitted on the sock knitting machine, they are transported to the sock sewing machine for sewing. During the whole process, the socks are hooked on a certain component by their last row of coils, and then the sewing process begins on the sewing toothed disc.

[0003] Regarding the process of transporting socks to the sewing disc for sewing, there are mainly two major technical solutions.

[0004] One type of solution is represented by CN101970740A, in which a pick-up device picks up socks in a hosiery machine and transfers them to a conveying device, wherein the body of the conveying device is composed of two semi-annular parts, one of which can be flipped relative to the other semi-annular part around a diameter axis so that the spokes of the semi-annular part of the body of the conveying device face the spokes of the other semi-annular part and are aligned with the spokes of the other semi-annular part. The so-called annular conveying device is the slit toothed disc of the present invention, and its spokes are called slit toothed needles in the present invention.

[0005] Another type of solution is represented by CN105887322A, which includes: a fixed frame; a fixed half-tooth frame fixed to the bottom of the fixed frame, on which there is at least one first functional tooth; a flip half-tooth frame, which is radially opposite to the fixed half-tooth frame and rotatably connected to the fixed frame, on which there is at least one second functional tooth, the outer surface of the second functional tooth has a sewing needle groove, and the flip half-tooth frame can be flipped relative to the fixed half-tooth frame to align the first functional tooth with the second functional tooth; a fixed half-tooth frame coil transfer assembly, which is connected to the fixed frame and the fixed half-tooth frame, and is used to transfer the coil on the first functional tooth to the second functional tooth after the first functional tooth and the second functional tooth are aligned; and a flip half-tooth frame coil release assembly, which is connected to the fixed frame and the flip half-tooth frame, and is used to release the coil from the second functional tooth after the sock toe is sewn. The functional teeth referred to herein are called sewing needles in the present invention.

[0006] Although the above two schemes are very different in the text description, the biggest difference is that the former uses a picking device to indirectly hook the socks onto the sewing toothed disc, while the latter itself is used as a picking device to directly pick up the socks from the hosiery machine and hook them onto the sewing toothed disc. After the socks have been hooked, their structure and working method are basically the same: a number of sewing needles are arranged on the annular sewing toothed disc, and one half ring can be flipped relative to the other half ring, so that the sewing needles on the two half rings are aligned with each other; since each sewing needle is hooked with a coil, the two coils on the two aligned sewing needles can be pushed together, and then the two coils are sewn together by a sewing mechanism. From the perspective of the socks, it is equivalent to folding the 360° edge of the socks into 180° and then sewing them.

[0007] The defect of the prior art is that the sewing tooth disc must be in a standard annular shape, and the sewing needles must also be arranged in a standard circle, so that when the sewing tooth disc is turned over and folded, the sewing needles can be aligned in pairs. This alignment process must be accompanied by a certain speed and inertia, so it can also be described as the sewing needles colliding in pairs. Obviously, this will cause damage to the sewing needles and affect their service life. Summary of the invention

[0008] The object of the present invention is to provide a sewing toothed disc for a sock sewing machine with a longer service life.

[0009] To this end, the present invention adopts the following technical scheme: a sewing tooth disk for a sock sewing machine comprises a fixed half-tooth rack and a flip half-tooth rack, the flip half-tooth rack can be flipped radially 180°, so that the two have two states: unfolded into a ring and stacked into two semi-rings; a plurality of sewing tooth needles are installed on the fixed half-tooth rack and the flip half-tooth rack, when the fixed half-tooth rack and the flip half-tooth rack are unfolded into a ring, all the sewing tooth needles form a circle; when the fixed half-tooth rack and the flip half-tooth rack are stacked into a semi-ring, all the sewing tooth needles are formed into a semicircle in pairs; the sewing tooth needles installed on the fixed half-tooth rack are first-class sewing tooth needles, which can swing at a certain angle relative to the edge of the fixed half-tooth rack to change the angle between them and the axis of the sewing tooth disk; the sewing tooth needles installed on the flip half-tooth rack are second-class sewing tooth needles, which are fixedly installed on the flip half-tooth rack;

[0010] An elastic ring is arranged on the periphery of the sewing tooth disk, and the first type of sewing tooth needle is subjected to pressure from the elastic ring on the side facing away from the axis of the sewing tooth disk, and the direction of the pressure points to the axis of the sewing tooth disk.

[0011] The first type of sewing tooth needle is in the shape of a "7"-shaped sheet, including a transverse short side and a longitudinal long side, the tip of the longitudinal long side is a needle tip, and the transverse short side is placed on the circumferential edge of the fixed half-tooth frame; the angle formed by the transverse short side and the longitudinal long side of the first type of sewing tooth needle is greater than the angle between the upper surface and the outer peripheral surface of the fixed half-tooth frame on which it is placed, so that there is a certain gap between the first type of sewing tooth needle and the fixed half-tooth frame.

[0012] The first-class sewing needles have different radial widths at different heights with smooth transitions; the fixed half-tooth frame is provided with a radial pushing piece, which is arranged in the semicircle formed by the first-class sewing needles and contacts the side of the first-class sewing needles facing the axis of the sewing tooth disk; the radial pushing piece moves up and down along the axial direction of the sewing tooth disk under the drive of the driving mechanism, and when the radial pushing piece contacts the wider part of the first-class sewing needles, it pushes the first-class sewing needles to overcome the pressure of the elastic ring and swing outward; when the radial pushing piece contacts the narrower part of the first-class sewing needles, the elastic ring compresses the first-class sewing needles to shrink inward.

[0013] At least one of the first type of sew-tooth needles and the second type of sew-tooth needles has a radially curved surface at its needle tip.

[0014] The height of the first type of sewing needles is greater than that of the second type of sewing needles, so that when the flip half-tooth frame and the fixed half-tooth frame are laid flat in a ring shape, the needle tips of all the sewing needles are combined into a circle on the same plane.

[0015] The first type of slit tooth needle is narrower at the top and wider at the bottom in radial width; on the side facing away from the axis of the slit tooth disk, the distance between the outer edge of the first type of slit tooth needle and the axis of the slit tooth disk is consistent from top to bottom; on the side facing the axis of the slit tooth disk, the distance between the inner edge of the first type of slit tooth needle and the axis of the slit tooth disk is larger at the top and smaller at the bottom.

[0016] The radial push piece is semi-annular and contacts one side of each first-type sewing tooth needle facing the axis of the sewing tooth disc.

[0017] When the present invention is used, when the radial pusher is at a height where the radial width of the first-class sewing pin is narrower, the elastic ring presses the first-class sewing pin inward, that is, toward the axis of the sewing tooth disk, so that the longitudinal long side of the first-class sewing pin fits the circumferential surface of the fixed half-tooth frame, and the needle tips of all the first-class sewing pins form a semicircle with a smaller radius. When the radial pusher is at a height where the radial width of the first-class sewing pin is wider, the radial pusher overcomes the pressure of the elastic ring and pushes the first-class sewing pin outward, that is, in a direction away from the axis of the sewing tooth disk, so that a certain gap is generated between the longitudinal long side of the first-class sewing pin and the circumferential surface of the fixed half-tooth frame, and the needle tips of all the first-class sewing pins form a semicircle with a larger radius. When the semicircle formed by the needle tips of the first-class sewing pins is one of the radii, the radius is the same as the semicircle formed by the needle tips of the second-class sewing pins, so that the two semicircles are combined into a standard circle, which can be used to pick up the coils of socks. When the flip half-tooth frame is flipped and folded, the radial pushing piece is moved so that the semicircle formed by the needle tips of the first type of sewing tooth needles has another radius, which is different from the semicircle formed by the needle tips of the second type of sewing tooth needles. As a result, the two types of sewing tooth needles are not aligned in a standard manner, but are staggered in the radial direction by a distance, which is generally 0.1~0.3mm in reality; the tip of one needle tip falls on the arc surface of the other needle tip, which will not affect the subsequent step of overlapping the two coils and avoids damage caused by direct collision of the needle tips. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 It is a simplified schematic diagram of the present invention.

[0020] Figure 3 is a schematic diagram of a first type of sewing needle.

[0021] Figure 4 It is a cross-sectional schematic diagram of the picking operation of the present invention.

[0022] Figure 5 It is a cross-sectional schematic diagram of the present invention in a stacked state. DETAILED DESCRIPTION

[0023] See attached Figure 1 . The sewing toothed disc 1 of the present embodiment comprises a fixed half-tooth frame 2 and a flip half-tooth frame 3, wherein the flip half-tooth frame can be flipped along the diameter of the sewing toothed disc, so as to be unfolded or folded with the fixed half-tooth frame. A plurality of first-class sewing toothed needles are arranged on the fixed half-tooth frame 2, and a plurality of second-class sewing toothed needles are arranged on the flip half-tooth frame 3. Since the height of the first-class sewing toothed needles is greater than that of the second-class sewing toothed needles, the first-class sewing toothed needles are commonly referred to as long needles in the present embodiment, and are marked as 4 in the figure, and the second-class sewing toothed needles are commonly referred to as short needles in the present embodiment, and are marked as 5 in the figure.

[0024] When the flipped half-tooth frame 3 is unfolded, the needle tips of the long needle 4 and the short needle 5 form a complete circle on the same plane; an elastic ring 6 is wrapped around the fixed half-tooth frame, and its own elasticity generates inward pressure. Since there is a height difference between the long needle and the short needle, the elastic ring 6 only presses the long needle 4 without affecting the short needle 5.

[0025] When the flip half tooth rack 3 is folded, the long needles and the short needles are opposite to each other, that is, each pair of long needles and short needles has the same phase in the circumferential direction.

[0026] Figure 2 Some unimportant parts are stripped off, and only one long needle and one short needle are shown. It can be seen that both the fixed half-tooth frame and the flip half-tooth frame have a number of axial grooves for setting the long needle and the short needle. On one side of the fixed half-tooth frame, there is also a radial push piece 7, which also has a number of axial grooves to match the long needle. It also has a connecting rod 71, which cooperates with the upper cylinder so that the radial push piece 7 can move up and down.

[0027] Figure 3 The cross-sectional view of a long needle 4 is shown. The width shown in the figure is the radial direction after installation. The left side is toward the center of the circle, also called the inner side. From this angle, it is basically in the shape of a "7", including a transverse short side 41 and a longitudinal long side 42. The lower end of the longitudinal long side is the needle tip, which has an arc surface 43. Figure 3 In cross-section, it can be seen that the needle tip portion has a groove 46 for cooperating with the hook of the knitting needle to complete the picking action. Figure 3 As can be seen, the outer side of the long needle 4 is a straight line, and the inner side is divided into two sections, the upper section 44 is closer to the outer side and the lower section 45 is closer to the center of the circle, so that the upper radial width of the long needle is narrower and the lower radial width is wider.

[0028] The short needle 5 is not presented in a separate parts drawing. Its basic structure is similar to that of the long needle, also in the shape of a "7", including a transverse short side and a longitudinal long side, and the needle tip also has an arc surface. The difference is that the longitudinal long side of the short needle is shorter, and the inner and outer sides are the same straight line, so that the radial width of the upper and lower parts of the short needle is consistent. In addition, in terms of the angle between the transverse short side and the longitudinal long side, the angle of the short needle 5 is 90°, which is equal to the angle between the top surface and the circumferential surface of the flip half-tooth frame, so that the short needle 5 can be installed on the flip half-tooth frame in a snug manner; while the angle of the long needle 4 is about 92°, which is greater than the angle between the top surface and the circumferential surface of the fixed half-tooth frame, so that there is a slight swing gap between the long needle 4 and the fixed half-tooth frame. It can also be seen that there is an inner concave shape at the junction between the transverse short side and the longitudinal long side of the long needle 4, which is also designed to facilitate the swing between the long needle and the fixed half-tooth frame.

[0029] It can be seen from the above description that the short needle 5 is suitable for being fixedly mounted on the flip half-tooth frame, while the long needle 4 is suitable for being swingably mounted on the fixed half-tooth frame.

[0030] Figure 4 The figure shows the state of this embodiment when performing the picking operation. In order to cooperate with the knitting needles 9 of the needle cylinder, the flip half tooth frame 3 is in the unfolded state, and the needle tips of the long needles 4 and the short needles 5 form a standard circle, so as to correspond to all the knitting needles 9 one by one, and the needle hooks of the knitting needles cooperate with the grooves (such as 46) of the long needles 4 and the short needles 5, so that the loops of the socks can be picked up on the long needles 4 and the short needles 5. Figure 4 It can be seen that at this time, the radial push piece 7 contacts the lower section of the inner side edge of the long needle 4, thereby overcoming the pressure of the elastic ring 6 and pushing the long needle outward; at this time, there is a certain angular gap between the upper section of the inner side edge of the long needle 4 and the circumferential side surface of the fixed half-tooth rack, but the gap is too small and difficult to see in the figure.

[0031] Figure 5 The embodiment of the present invention is shown in a stacked state, at which time the sewing tooth disc has left the needle cylinder and reached the working position of the next process. The turning half tooth frame 3 is turned over 180 degrees and folded, so that the short needles 5 and the long needles 4 are opposite to each other, so that the two coils hung on the long needles and the short needles can be pushed together. Figure 5 As can be seen in the figure, at this time, the radial push piece 7 rises and contacts the upper section of the inner side of the long needle 4, and the elastic ring 6 presses the long needle toward the axis of the sewing tooth disk, so that the upper section of the inner side of the long needle 4 is tightly fitted with the circumferential side of the fixed half tooth frame. Figure 4 In terms of the state, the tips of the long needles have a slight displacement inward, that is, the radius of the semicircle formed by the tips of all the long needles is slightly smaller than the radius of the semicircle formed by the tips of all the short needles. Since the long needles and the short needles are still aligned in pairs in the circumferential phase, the tip of each long needle falls on the arc surface of the tip of the short needle.

Claims

1. A sewing toothed disc for a sock sewing machine, comprising a fixed half toothed frame and a flip half toothed frame, wherein the flip half toothed frame can be flipped radially 180°, so that the two have two states: unfolded into a ring and stacked into two semi-rings; a plurality of sewing toothed needles are mounted on both the fixed half toothed frame and the flip half toothed frame, and when the fixed half toothed frame and the flip half toothed frame are unfolded into a ring, all the sewing toothed needles form a circle; when the fixed half toothed frame and the flip half toothed frame are stacked into a semi-ring, all the sewing toothed needles are opposite to each other and form a semi-circle; the characteristics are: The sewing tooth needle installed on the fixed half-tooth frame is a first-type sewing tooth needle, which can swing at a certain angle relative to the edge of the fixed half-tooth frame to change the angle between it and the axis of the sewing tooth disc; the sewing tooth needle installed on the flip half-tooth frame is a second-type sewing tooth needle, which is fixedly installed on the flip half-tooth frame; An elastic ring is arranged on the periphery of the sewing tooth disk, and the first type of sewing tooth needle is subjected to pressure from the elastic ring on the side facing away from the axis of the sewing tooth disk, and the direction of the pressure points to the axis of the sewing tooth disk; The first type of sewing needle is a "7"-shaped sheet, including a transverse short side and a longitudinal long side, the tip of the longitudinal long side is a needle tip, and the transverse short side is placed on the circumferential edge of the fixed half-tooth frame; the angle formed by the transverse short side and the longitudinal long side of the first type of sewing needle is greater than the angle between the upper surface and the outer peripheral surface of the fixed half-tooth frame on which it is placed, so that there is a certain gap between the first type of sewing needle and the fixed half-tooth frame; The first-class sewing gear needles have different radial widths at different heights, and the transition is smooth; the fixed half-tooth frame is provided with a radial push piece, which is arranged in the semicircle formed by the first-class sewing gear needles and contacts the side of the first-class sewing gear needles facing the axis of the sewing gear disc; the radial push piece moves up and down along the axial direction of the sewing gear disc under the drive of the driving mechanism, and when the radial push piece contacts the wider part of the first-class sewing gear needles, it pushes the first-class sewing gear needles to overcome the pressure of the elastic ring and swing outward; when the radial push piece contacts the narrower part of the first-class sewing gear needles, the elastic ring compresses the first-class sewing gear needles to make them shrink inward; At least one of the first type of sew-tooth needles and the second type of sew-tooth needles has a radially curved surface at its needle tip.

2. The sewing toothed disc for a sock sewing machine according to claim 1, characterized in that: The height of the first type of sewing needles is greater than that of the second type of sewing needles, so that when the flip half-tooth frame and the fixed half-tooth frame are laid flat in a ring shape, the needle tips of all the sewing needles are combined into a circle on the same plane.

3. The sewing toothed disc for a sock sewing machine according to claim 1, characterized in that: The first type of slit tooth needle is narrower at the top and wider at the bottom in radial width; on the side facing away from the axis of the slit tooth disk, the distance between the outer edge of the first type of slit tooth needle and the axis of the slit tooth disk is consistent from top to bottom; on the side facing the axis of the slit tooth disk, the distance between the inner edge of the first type of slit tooth needle and the axis of the slit tooth disk is larger at the top and smaller at the bottom.

4. The sewing toothed disc for a sock sewing machine according to claim 1 or 3, characterized in that: The radial push piece is semi-annular and contacts one side of each first-type sewing tooth needle facing the axis of the sewing tooth disc.

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