High-speed electromagnetic needle selection device and needle selection method

Abstract

The invention relates to a high-speed electromagnetic needle selection device and a needle selection method. The electromagnetic needle selection device comprises an electromagnetic needle selection piece, a bird piece, a needle selection shaft, a pressing strip and a needle jack. The electromagnetic needle selection piece is provided with a needle selection head which can swing under the action of internal magnetic force of the electromagnetic needle selection piece so as to perform needle selection; the bird piece is provided with a needle selection part, and the needle selection shaft, the needle selection part and the needle selection head are matched for use for needle selection; the outer side wall of the needle selecting shaft is provided with a first cambered surface, a second cambered surface and a third cambered surface which can abut against the bird-shaped pieces in a sliding mode, and the distances between the three cambered surfaces and the axis of the needle selecting shaft are sequentially reduced so that the needle selecting shaft can continuously rotate by one circle, and under the action of the pressing strip, the bird-shaped pieces can stay at three different positions in the rotating process. The needle selecting shaft, the needle selecting part and the needle selecting head are used in cooperation so that the needle jack butt can be switched among the lowest position, the low needle position and the high needle position. Needle selection of the electromagnetic needle selection piece can be completed by continuously rotating the needle selection shaft and cooperating with the needle selection head, the needle selection time is greatly shortened, and the knitting efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of glove knitting machines, and in particular to a high-speed electromagnetic needle selection device and a needle selection method. Background Art

[0002] Computerized glove knitting machine is a type of flat knitting machine. Its basic structure is: front and rear needle beds are set between the left and right bases, movable knitting needles are set in the needle grooves of the needle beds, and cam bottom plates are set on the split front and rear heads, which move left and right with the heads; since various cams are set on the cam bottom plates, the needle selection, starting and clearing actions are performed through the interaction between the needle butts of each cam and the knitting needles (combination needles) to complete various knitting functions.

[0003] Existing glove knitting machines use different arrangements of roller pins and different heights of the pins on the roller to achieve different needle outputs. This is a complex process, requiring the pins to be replaced. Furthermore, the needle selection shaft in existing electromagnetic needle selection mechanisms must pause during rotation, waiting for the needle selector to complete its action before continuing, significantly reducing efficiency. Summary of the Invention

[0004] The present invention provides a high-speed electromagnetic needle selection device and needle selection method, which can complete the needle selection of the electromagnetic needle selection component by continuously rotating the needle selection shaft and cooperating with the needle selection head, so that the needle clock of the needle jack can switch between the lowest position, low needle position and high needle position. There is no need for the needle selection shaft to stop rotating during the needle selection process, which greatly shortens the needle selection time and greatly improves the knitting efficiency.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A high-speed electromagnetic needle selection device, comprising an electromagnetic needle selection member, a bird piece, a needle selection shaft, a pressure strip and a needle jack;

[0007] The bird piece and the needle selection shaft are both rotatably arranged, and the bird piece is used in conjunction with the pressure strip, the needle jack and the needle selection shaft;

[0008] The electromagnetic needle selection member has a needle selection head, which can swing under the magnetic force of the electromagnetic needle selection member to select the needle;

[0009] The bird piece has a needle selection part, and the needle selection shaft, the needle selection part and the needle selection head are used together to select needles;

[0010] The outer side wall of the needle selection shaft is provided with a first arc surface, a second arc surface and a third arc surface, and the distances between the three and the axis thereof decrease successively, so that the needle selection shaft can continuously rotate one circle. The first arc surface, the second arc surface and the third arc surface can respectively slide in contact with the bird piece, and under the action of the pressure strip, the bird piece can respectively stay at three different positions during the rotation process. At the three stop positions, the needle selection shaft, the needle selection part and the needle selection head are used in combination to switch the needle clock of the needle lifter between the lowest position, the low needle position and the high needle position.

[0011] Preferably, a groove is provided on the side of the needle selection portion facing the electromagnetic needle selection member, and the groove has a first step surface, a second step surface and a third step surface which are parallel to each other, and the depths of the three step surfaces increase in sequence;

[0012] The needle selection shaft rotates to the first arc surface and contacts the bird piece, the needle selection head swings to the first step surface and contacts the side surface thereof, and when the needle selection shaft rotates to the second arc surface and contacts the bird piece, the needle selection head contacts the first step surface, so that the needle jack is in the lowest position.

[0013] The needle selection shaft rotates to the second arc surface and contacts the bird piece, the needle selection head swings to the second step surface and contacts the side surface thereof, and when the needle selection shaft rotates to the third arc surface and contacts the bird piece, the needle selection head contacts the second step surface, so that the needle jack needle clock is in the low needle position;

[0014] The needle selection shaft rotates to the third arc surface and contacts the bird piece, and the needle selection head swings to the third step surface, so that the needle jack needle clock is in the high needle position.

[0015] Preferably, the first arc surface, the second arc surface and the third arc surface are connected in sequence.

[0016] Preferably, the bird piece has a first portion and a second portion, the first portion and the second portion are respectively located on both sides of the rotation axis of the bird piece, and the first portion cooperates with the needle jack;

[0017] The pressure strip and the needle selection shaft are located on both sides of the second portion, and the needle selection shaft and the electromagnetic needle selection member are located on the same side relative to the second portion;

[0018] The pressure strip cooperates with the bird piece so that the bird piece has a tendency to rotate in the forward direction, and the forward rotation of the bird piece causes the needle clock of the needle jack to move from the lowest position to the low needle position and then to the high needle position in sequence;

[0019] The needle selection part is located in the second part, and a protrusion is provided on the side wall of the second part facing the electromagnetic needle selection member, and the protrusion is used to abut against the outer side wall of the needle selection shaft to prevent the bird piece from rotating in the forward direction.

[0020] Preferably, the needle selection portion is further away from the rotation axis of the bird piece than the protrusion.

[0021] Preferably, the electromagnetic needle selection member includes a needle selection piece and a magnetic rod;

[0022] The needle selector is rotatably arranged and has a first end and a second end. The needle selector head is arranged at the first end, and a magnet is arranged at the second end.

[0023] The end of the magnetic bar is arranged toward the magnet, and the end magnetic pole can be switched between NS;

[0024] By changing the end magnetic poles of the above-mentioned magnetic rod and interacting with the magnetic poles at both ends of the above-mentioned magnet, the above-mentioned needle selection head is made to swing, and under the action of the above-mentioned pressure strip, it cooperates with the above-mentioned needle selection shaft and the above-mentioned needle selection part to switch the above-mentioned needle lifter needle clock between the lowest position, low needle position and high needle position.

[0025] Preferably, in the swinging direction of the needle selection head, the third step surface is located between the first step surface and the second step surface.

[0026] Preferably, the electromagnetic needle selection member is provided in plurality, and the plurality of electromagnetic needle selection members are divided into a plurality of electromagnetic needle selection member groups;

[0027] The needle selection pieces in the plurality of sets of the electromagnetic needle selection member groups are arranged crosswise in sequence;

[0028] Moreover, in a plane projection perpendicular to the rotation axis of the needle selector jack, the angles between the first end and the second end of the needle selector jack in each group of the electromagnetic needle selector components and the line connecting the rotation center thereof are different, and the first ends of the needle selector jacks in all the electromagnetic needle selector components coincide with each other;

[0029] The magnetic bars in all the above-mentioned electromagnetic needle selection component groups are arranged according to the distribution pattern of the second ends of the corresponding above-mentioned needle selection pieces.

[0030] Preferably, the electromagnetic needle selection member and the corresponding circuit board module are covered with an oil-proof shell, and the oil-proof shell has an opening for the needle selection head to extend and swing, and the opening of the oil-proof shell faces the needle selection part and is arranged horizontally or obliquely downward in the glove machine.

[0031] A needle selection method, implemented by the above-mentioned electromagnetic needle selection device, comprises:

[0032] Needle cleaning: first rotate the needle selection shaft until the first arc surface contacts the convex part of the bird piece, and then swing the needle selection head toward the first step surface until it contacts the side surface of the first step surface, so that the needle jack on the needle plate is inside the needle plate;

[0033] Low needle position needle selection: in the process of the needle selection shaft rotating from the first arc surface to the second arc surface abutting against the protrusion, the needle selection head corresponding to the needle jack that needs to be selected in the knitting area of the needle plate swings from the first step surface to the second step surface. When the needle selection shaft rotates to the second arc surface abutting against the protrusion, the needle selection head abuts against the side surface of the second step surface, so that the needle clock of this part of the needle jack is in the low needle position, and at the same time, the needle selection head that does not participate in needle selection abuts against the bottom surface of the first step surface, so that the needle clock of the needle jack that does not participate in knitting on the needle plate is in the lowest position;

[0034] High and low needle position selection: in the process of the needle selection shaft rotating from the first arc surface to the second arc surface abutting against the protrusion, the needle selection head corresponding to the needle jack that needs to be selected in the knitting area on the needle plate swings toward the direction of the second step surface. When the needle selection shaft rotates to the second arc surface abutting against the protrusion, the needle selection head abuts against the side surface of the second step surface, and the needle clock of the needle jack is in the low needle position. At the same time, the needle selection head that does not participate in needle selection abuts against the bottom surface of the first step surface, so that the needle clock of the needle jack that does not participate in knitting on the needle plate is in the lowest position; the needle jack corresponding to the needle jack that needs to be selected at a high needle position The needle selection head continues to swing toward the third step surface and enters the needle selection groove where the third step surface is located, while the needle selection head corresponding to the needle jack for low needle position selection remains stationary. Then the needle selection shaft rotates from the second arc surface to the third arc surface and abuts against the protrusion. The needle selection head for low needle position selection abuts against the second step surface, so that the needle jack needle clock corresponding to this part of the needle selection head is in the low needle position. The needle selection head for high needle position selection is in the needle selection groove where the third step surface is located, so that the needle jack needle clock corresponding to this part of the needle selection shaft is in the high needle position, and the needle selection is completed.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] A first arc surface, a second arc surface and a third arc surface are set. Since the outer diameter of each arc surface is certain, the bird piece will no longer rotate during the process of sliding from the starting point to the end point of each arc surface, but will stay for a certain period of time. This period of time can be used for the needle selection head to swing and cooperate with the needle selection shaft and the needle selection part to select needles. Therefore, the needle selection shaft does not need to stop and can continue to rotate at high speed, that is, it does not need to stop after rotating one circle, so that the bird piece can stay in three positions, and the needle selection head has enough time to swing and select needles at the three positions, so that the needle selection time of the entire electromagnetic needle selection device is greatly shortened and the weaving efficiency is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 Schematic diagram of the whole device of an embodiment of the present invention (the needle selection head abuts against the side surface of the first step surface);

[0039] Figure 2 This is a schematic diagram of the contact between the selected needle head and the side surface of the second step surface in the device of an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of a needle selection head located in the needle selection groove where the third step surface is located in the device of an embodiment of the present invention;

[0041] Figure 4 Schematic diagram of the selector jack at different angles A in an embodiment of the present invention;

[0042] Figure 5 Schematic diagram of the relative positions of the needle jack and the oil housing in an embodiment of the present invention;

[0043] Figure 6 Schematic diagram of the oil casing opening according to an embodiment of the present invention.

[0044] Description of reference numerals:

[0045] 1. Electromagnetic needle selection component; 11. Needle selection piece; 111. Needle selection head; 112. Magnet; 12. Magnetic rod; 121. Steel rod; 122. Enameled wire layer; 2. Bird piece; 21. First part; 22. Second part; 23. Protrusion; 24. Needle selection part; 241. First step surface; 242. Second step surface; 243. Third step surface; 25. Elastic part; 3. Needle selection shaft; 31. First arc surface; 32. Second arc surface; 33. Third arc surface; 4. Pressing strip; 5. Needle lifter needle clock; 6. Oil-proof shell; 61. Opening. DETAILED DESCRIPTION

[0046] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0049] The embodiment of the present invention provides a high-speed electromagnetic needle selection device, including an electromagnetic needle selection component 1, a bird piece 2, a needle selection shaft 3, a pressure strip 4 and a needle jack; wherein the electromagnetic needle selection component 1 has a needle selection head 111. Since the electromagnetic needle selection component 1 has magnetic force, the needle selection head 111 can swing under the action of the magnetic force to adjust the needle selection position of the needle selection head 111; wherein the bird piece 2 and the needle selection shaft 3 are respectively rotatably arranged on the mounting shaft on the glove machine frame, the bird piece 2 has a needle selection part 24, specifically, the pressure strip 4 cooperates with the bird piece 2, so that the bird piece 2 has a rotational pre-tightening force, and the needle selection shaft 3 cooperates with the bird piece 2. By rotating the needle selection shaft 3, the bird piece 2 can be rotated under the action of the pressure strip, and during the rotation of the bird piece 2, the bird piece 2 can stay at different positions, that is, the needle selection part 24 stays at different positions, and then the needle selection shaft 3, the needle selection part 24 and the needle selection head 111 are used in combination to make the needle jack needle clock 5 stay at different heights to achieve needle selection.

[0050] However, the surface of the existing needle selection shaft 3 is provided with a convex point or a push rod to abut the bird piece 2. By rotating the needle selection shaft 3, the convex point or the push rod abuts the bird piece 2, so that the bird piece 2 rotates and reaches the needle selection position. At this time, it is necessary to stay at the needle selection position for a short period of time, and the needle selection shaft 3 stops rotating, so that the needle selection head 111 of the electromagnetic needle selection component 1 corresponding to the bird piece 2 that needs to be selected at this position swings to the corresponding position and cooperates with the needle selection part 24 and the needle selection shaft 3. This process has sufficient time so that the bird piece 2 that needs to be selected no longer rotates, and the needle selection of the bird piece 2 at this needle selection position is completed. After the needle selection is completed, the needle selection shaft 3 rotates again, and abuts the bird piece 2 through the convex point or the push rod, so that the bird piece 2 rotates again and reaches the next needle selection position, and then repeats the above operation to continue needle selection until the needle selection shaft 3 rotates one circle and the needle selection is completed. As can be seen from the above, when the needle selection shaft 3 rotates one circle, it needs to stop at the needle selection position for many times, so the needle selection time is greatly increased, which is fed back to the whole fabric weaving process, which will increase the fabric weaving time and reduce the weaving efficiency. In order to solve the above problems, Figure 1-Figure 3As shown, the surface of the needle selection shaft 3 in this embodiment is no longer provided with a single rotation point such as a convex point or a push rod, but a first arc surface 31, a second arc surface 32 and a third arc surface 33 are formed on the outer periphery of the needle selection shaft 3, and the distances between the three arc surfaces 31, 32 and the third arc surface 33 and the axis of the needle selection shaft 3 decrease successively, so the outer diameters of the first arc surface 31, the second arc surface 32 and the third arc surface 33 are different. Due to the different outer diameters of the three, when the needle selection shaft 3 rotates, the bird piece 2 rotates from abutting one arc surface to abutting another arc surface, and the bird piece 2 also rotates accordingly, but during the rotation of the bird piece 3, the bird piece 2 rotates from abutting one arc surface to abutting another arc surface. In the process of the bird piece 2 abutting against the same arc surface, the bird piece 2 does not rotate, so that the bird piece 2 stops during the rotation process. At this time, the needle selection shaft 3 is constantly rotating. For example, the first arc surface 31, the second arc surface 32 and the third arc surface 33 are connected in sequence. The needle selection shaft 3 rotates from the third arc surface 33 to the first arc surface 31, and the bird piece 2 rotates a certain angle. Then, the bird piece 2 abuts against the starting point of the first arc surface 31. In the process of the bird piece 2 abutting against the first arc surface 31, since the outer diameter of the first arc surface 31 is consistent, The bird piece 2 stops, and the needle selection shaft 3 continues to rotate. The first arc surface 31 moves relative to the bird piece 2 from its starting point to the end point and abuts against the bird piece 2. During this process, the needle selection head 111 that needs to select the needle can swing under the action of the magnetic force in the electromagnetic needle selection part 1, and swing to the position used in conjunction with the corresponding needle selection part 24 to complete the needle selection at this stop position. After the needle selection is completed, the needle selection shaft 3 continues to rotate to the second arc surface 32 and rotates to the third arc surface 33. At this time, the bird piece 2 in contact with the second arc surface 32 stops. During the stop process In the process, the needle selection head 111 that needs to select the needle can swing under the action of the magnetic force in the electromagnetic needle selection part 1, swing to the position used in conjunction with the corresponding needle selection part 24, continue to complete the needle selection at the stop position, and then rotate to the third arc surface 33 to continue the needle selection, so that the bird piece 2 can stay at three different positions during the rotation process. At the three stop positions, the needle selection shaft 3, the needle selection part 24 and the needle selection head 111 can be used in conjunction to switch the needle clock 5 of the needle lifter between the lowest position, the low needle position and the high needle position. In summary, since the first arc surface 31, the second arc surface 32 and the third arc surface 33 are not a point position, but an arc surface, and since the outer diameter of each arc surface is certain, the bird piece 2 will stay for a certain period of time during the process of sliding from the starting point to the end point of each arc surface. This period of time can be used for the needle selection head 111 to swing and cooperate with the needle selection shaft 3 and the needle selection part 24, so the needle selection shaft 3 does not need to stop and can continue to rotate at high speed, that is, it does not need to stop after rotating one circle, and the bird piece 2 can stay in three positions, and the needle selection head 111 has enough time to swing and select needles at the three positions, so that the needle selection time of the entire electromagnetic needle selection device is greatly shortened and the weaving efficiency is greatly improved.Compared with the roller needle selection, since the roller is relatively large, it takes more than 70 milliseconds to rotate one circle. According to the current solution combination, since the existing needle selection shaft is relatively small, one circle can be completed within 40 milliseconds, and the needle selector only takes more than 10 milliseconds to swing. The speed is greatly improved compared with before.

[0051] Specifically, in the present embodiment, a groove is provided on the side of the needle selection portion 24 facing the needle selection head 111, wherein the groove has a first step surface 241, a second step surface 242 and a third step surface 243 which are parallel to each other, and the depths of the three step surfaces increase successively, and three interconnected needle selection grooves are actually formed, wherein the first step surface 241, the second step surface 242 and the third step surface 243 are the bottoms of the three needle selection grooves respectively; although the needle selection operation is actually performed by abutting the needle selection head 111 with the corresponding step surface, in actual processing, manufacturing and use, it cannot be guaranteed that the needle selection shaft 3 will rotate to the corresponding arc When the surface abuts against the bird piece 2, the needle selection head 111 will definitely be able to abut against the step surface, so when processing the step surface, make the step surface slightly lower, so that when the needle selection shaft 3 rotates to the corresponding arc surface and abuts against the bird piece 2, the needle selection head 111 rotates to the step surface accordingly. It actually abuts against the side of the step surface, and there is a certain gap with the step surface, but the gap is very small. At this time, it can still serve as a needle selection position, and the needle is selected through the needle selection shaft 3. After the needle selection shaft 3 rotates to the next arc surface, the needle selection head 111 abuts against the corresponding step surface. The needle selection head 111 fixes the bird piece 2 and performs stable needle selection. Specifically, when the needle selection shaft 3 rotates to the first arc surface 31 and abuts against the bird piece 2, as shown Figure 1 As shown, the needle selection head 111 can swing to the first step surface 241 of the needle selection part 24 and abut against the side of the first step surface 241. Needle selection can be performed at this position, and the needle selection is performed through the needle selection shaft 3. When the needle selection shaft 3 rotates to the second arc surface 32 and abuts against the bird piece 2, the needle selection head 111 located at the first step surface 241 abuts against the first step surface 241, and it is still the needle selection position. At this time, needle selection is performed through the needle selection head 111. When the needle selection shaft 3 rotates to the second arc surface 32 and abuts against the bird piece 2, as shown Figure 2 As shown, the needle selection head 111 can swing to the second step surface 242 of the needle selection part 24 and abut against the side of the second step surface 242. At this position, needle selection can be performed, and the needle selection is performed through the needle selection shaft 3. When the needle selection shaft 3 rotates to the third arc surface 33 and abuts against the bird piece 2, the needle selection head 111 located at the second step surface 242 abuts against the second step surface 242, and it is still the needle selection position. At this time, the needle selection is performed through the needle selection head 111. Figure 3As shown, the needle selection shaft 3 rotates to the third arc surface 33 and contacts the bird piece 2, and the needle selection head 111 can swing to the third step surface 243 of the needle selection part 24. At this time, whether the needle selection part 24 contacts the third step surface 243 or not, the position of the bird piece 2 is controlled by the needle selection shaft 3, and the needle jack needle clock 5 is in the high needle position. Moreover, when processing the step surface, the step surface is slightly lowered, which can also ensure the smooth swing of the needle selection head 111. The needle selection head 111 will not swing smoothly due to contact at the beginning, thereby causing problems in the needle selection process. It should be noted that even if the needle selection head 111 contacts the side of the step surface, it is controlled by the needle selection shaft 3, and the distance between the needle selection head 111 and the step surface is very small, so this position is still the needle selection position as when the needle selection head 111 contacts the step surface, and does not affect normal needle selection.

[0052] Preferably, the first arc surface 31, the second arc surface 32 and the third arc surface 33 are connected in sequence, because the needle selection shaft 3 rotates to the first arc surface 31, which corresponds to the needle jack needle clock 5 being in the lowest position, the needle selection shaft 3 rotates to the second arc surface 32, which corresponds to the needle jack needle clock 5 being in the low needle position, and the needle selection shaft 3 rotates to the third arc surface 33, which corresponds to the needle jack needle clock 5 being in the high needle position. During normal knitting, it is only necessary to make the needle jack needle clock 5 in the knitting area be in the low needle position to participate in knitting or the lowest position. Each time the needle is selected, it is only necessary to make the needle selection shaft 3 rotate in sequence through the first arc surface 31 to the second arc surface 32 and cooperate with the needle selection head 111. It is only necessary to reach the end face of the second arc surface 32 close to the first arc surface 31. At this time, the needle selection at the second arc surface 32 is realized by the needle selection shaft 3, and the needle selection shaft 3 does not need to rotate one circle to realize it. It has fast speed and less movement, which can greatly improve the speed of needle selection and improve the knitting efficiency. Of course, it is important to know that if the knitting area is changed, the needle selection shaft 3 can be moved from the second arc surface 32 to the first arc surface 31 to abut against the bird piece 2, and then the needle selection shaft 3 can be moved from the first arc surface 31 to the second arc surface 32 to abut against the bird piece 2, and the needle selection head 111 can be used to select the needle. In addition, when knitting gloves, the high needle knitting area is relatively small compared to the normal knitting area. Therefore, when using high needles, the needle selection shaft 3 needs to be rotated continuously for one circle until the third arc surface 33 is close to the end face of the first arc surface 31. At this time, the needle selection head 111 is also located at the third step surface 243, so that the needle jack needle clock 5 is located at the high needle position.

[0053] Specifically, the bird piece 2 has a first part 21 and a second part 22, wherein the first part 21 and the second part 22 are respectively located on both sides of the rotation axis of the bird piece 2, and the first part 21 has a downward pressure part and cooperates with the needle piece. The prior art will not be repeated, and the needle selection part 24 is located in the second part 22. Correspondingly, the second part 22 is provided with a protrusion 23, and the protrusion 23 is used in conjunction with the outer peripheral side wall of the needle selection shaft 3, and the bird piece 2 is rotated under the action of the pressure strip 4. Specifically, in this embodiment, the bird piece 2 has an elastic part 25, and the end of the elastic part 25 in contact with the pressure strip 4 is located on the same side relative to the second part 22, and the needle selection shaft 3 and the electromagnetic needle selection member 1 are located on the same side relative to the second part 22. The needle selection shaft 3 and the pressure strip 4 are located on both sides of the second part 22, and the pressure strip 4 cooperates with the elastic part 25 to make the bird piece 2 have a tendency to rotate in the forward direction, and the protrusion 23 Cooperate with the needle selection shaft 3 to prevent the bird piece 2 from rotating in the forward direction, and the needle selection head 111 will also abut the needle selection part 24 to prevent the bird piece 2 from rotating in the forward direction. Therefore, when selecting needles, in order to enable the needle selection head 111 to swing normally to select needles, under the action of the needle selection shaft 3, it is necessary to first make all the bird pieces 2 rotate in the reverse direction, and the bird piece 2 rotates in the reverse direction to make the needle jack needle clock 5 on the needle plate drop to the inside of the needle plate and the lowest position, and then select the needle. The needle guide head only needs to move to the outside of the needle selection area, which will not affect the movement of the needle guide head. Assuming that the needle is to be selected at a high needle position, all the needle jack needle clocks 5 on the needle plate will be exposed from the needle plate, so the needle guide head needs to be moved outside the needle plate area. After the needle selection is completed, it can continue to move to the outside of the needle selection area, and then weaving can be carried out. Therefore, the distance the needle guide head moves during the needle selection process can be reduced, further speeding up the weaving efficiency. It should be known that, if Figure 1 As shown, the bird piece 2 referred to here rotates forward, that is, the needle jack needle clock 5 moves from the lowest position to the low needle position and then to the high needle position. Conversely, if the bird piece 2 rotates backward, the needle jack needle clock 5 moves from the high needle position to the low needle position and then to the lowest position.

[0054] Preferably, the needle selection portion 24 is further away from the rotation axis of the bird piece 2 relative to the protrusion 23, so that when the needle selection head 111 selects the needle and abuts against the needle selection portion 24, the force arm is longer, which will further reduce the supporting force of the needle selection head 111 on the needle selection portion 24, and can appropriately reduce the magnetic force inside the electromagnetic needle selection component 1, that is, further reduce the current flowing in the electromagnetic needle selection component 1. From the perspective of the entire glove machine, there are many electromagnetic needle selection components 1, which can also greatly save current.

[0055] Specifically, in this embodiment, the electromagnetic needle selector 1 includes a needle selector 11 and a magnetic bar 12. The needle selector 11 is rotatably arranged and has a first end and a second end. A needle selector head 111 is arranged at the first end, and a magnet 112, specifically a permanent magnet 112, is provided at the second end. The end of the magnetic bar 12 is arranged toward the magnet 112, and the end magnetic pole can be switched between NS. By switching the end magnetic poles of the magnetic bar 12 and interacting with the magnetic poles at the ends of the magnet 112, the needle selector head 111 can be swung. Under the action of the pressure strip 4, it cooperates with the needle selector shaft 3 and the needle selector portion 24 to switch the needle jack needle clock 5 between the lowest position, the low needle position, and the high needle position. Specifically, in this embodiment, there is only one magnet 112, which is arranged horizontally with its axis perpendicular to the axis of the magnetic bar 12. Since the two end magnetic poles of the magnet 112 are fixed, and the end magnetic pole of the magnetic bar 12 near the magnet 112 can be switched between NS, the second end of the needle selector 11 can swing and, in the absence of interference, can stay at two extreme positions.

[0056] Specifically, in the swinging direction of the needle selection head 111, the third step surface 243 is located between the first step surface 241 and the second step surface 242. Preferably, in this embodiment, in the swinging direction of the needle selection head 111, the third step surface 243 is located between the first step surface 241 and the second step surface 242, the first step surface 241 and the second step surface 242 are located on both sides of the third step surface 243, and the needle selection groove where the third step surface 243 is located is located between the needle selection groove where the first step surface 241 and the second step surface 242 are located. Specifically, there are two arrangement methods. The distance from the rotation axis of the bird piece 2 is from short to long, and the order of the three is first step surface 241, third step surface 242, and the distance from the first step surface 241 to the second step surface 242 is from short to long. The surface 243 and the second step surface 242, or the second step surface 242, the third step surface 243 and the first step surface 241, no matter which order is known from the above, the first step surface 241 corresponds to the lowest position of the needle jack needle clock 5, the second step surface 242 corresponds to the high needle position of the needle jack needle clock 5, and the third step surface 243 corresponds to the low needle position of the needle jack needle clock 5. Here, combined with the specific structure of the electromagnetic needle selection component 1, since the needle selection head 111 in the electromagnetic needle selection component 1 itself has only two extreme stay positions under the action of the magnetic rod 12 and the magnet 112, and the first step and the third step correspond to the two extreme positions respectively, the first step is the highest relative to the second step and the third step, and here for clearer The description is clear, the two extreme positions of the needle selection head 111 are the first position and the second position respectively, the first step surface 241 corresponds to the first position, and the second step surface 242 corresponds to the second position. When the needle selection head 111 abuts against the first step surface 241, when it swings toward the second step surface 242, it can swing directly to the second step surface 242, and the needle selection head 111 swings from the first position to the second position without being blocked, that is, the needle jack needle clock 5 switches from the lowest position to the low needle position. When the needle selection head 111 abuts against the second step surface 242, the magnetic pole of the magnetic bar 12 is switched, so that the needle selection head 111 swings from the second position to the first position, that is, when it swings toward the first step surface 241, due to the existence of the first step and the second step There is a height difference between the steps, so it will be blocked by the side wall connecting the first step and the third step. Then when the needle selection shaft 3 rotates to the point where the third arc surface 33 abuts the protrusion 23, the needle selection head 111 is located in the needle selection slot where the third step surface 243 is located. At this time, if the bird piece 2 is rotated in the opposite direction, the needle selection head 111 will move to the first position under the action of the magnetic force without switching the magnetic poles of the magnetic bar 12. Therefore, through the cooperation between the above-mentioned single magnetic bar 12 and the single magnet 112, the arrangement of the first step surface 241, the second step surface 242 and the third step surface 243 are combined to realize the three stop positions of the three needle selection heads 111, so that the structure of the entire electromagnetic needle selection component 1 is simpler and occupies a smaller volume.

[0057] Specifically, the magnetic rod 12 includes an enameled wire layer 122 and a steel rod 121. The enameled wire layer 122 is sleeved on the outside of the steel rod 121, and the two ends of the steel rod 121 are exposed outside the enameled wire layer 122. The enameled wire is wound around the steel rod 121 several times to form the enameled wire layer 122, so that the enameled wire layer 122 is sleeved on the outside of the steel rod 121. The enameled wire is instantly energized and then deenergized, so that the steel rod 121 acquires magnetism and maintains it. When the enameled wire is reversely energized, the steel rod 121 acquires reverse magnetic poles. By instantaneously energizing the enameled wire in both positive and negative directions, the magnetic poles are reversed. Preferably, the two ends of the steel rod 121 are exposed outside the enameled wire layer 122, which facilitates installation on the one hand and facilitates interaction between the steel rod 121 and the magnet 112 at the second end of the needle selector 11 on the other hand.

[0058] Since the thickness of the needle selector 11 itself is smaller than the outer diameter of the corresponding magnetic rod 12, the outer diameter of one magnetic rod 12 is equivalent to the sum of the thicknesses of several needle selectors 11, and the thickness of the needle selector 11 is basically the same as the thickness of the bird piece 2. One needle selector 11 corresponds to one bird piece 2. If multiple electromagnetic needle selectors 1 are arranged side by side in the direction of the rotation axis of the needle selector 11, then due to the thickness of the magnetic rod 12 itself, a large space will be left between the two adjacent needle selectors 11, although the magnetic rods 12 are close to each other. If the same number of needle selectors 11 needs to be installed, the length of the entire installation shaft and the length of the glove machine need to be extended, which makes the volume of the glove machine larger. Therefore, in this embodiment, if Figures 1-4As shown, multiple electromagnetic needle selection members 1 are divided into multiple groups of electromagnetic needle selection member groups, wherein the needle selection pieces 11 in the multiple groups of electromagnetic needle selection member groups are arranged crosswise in sequence, and in the plane projection perpendicular to the rotation axis of the needle selection piece 11, the angle between the first end and the second end of the needle selection piece 11 in each group of electromagnetic needle selection member groups and the line connecting its rotation center point is A, and they are all different. The first ends of the needle selection pieces 11 in all electromagnetic needle selection member groups coincide with each other, and the magnetic rods 12 in all the electromagnetic needle selection member groups are arranged according to the distribution mode of the second ends of the corresponding needle selection pieces 11, so that in this plane projection, there will be only one first end of the needle selection piece 11, and multiple second ends, and the multiple second ends are distributed circumferentially along the needle selection piece 11, wherein the above-mentioned electromagnetic needle selection member group is divided into several groups, and there are several second ends here, that is, if it is divided into three groups, the needle selection pieces 11 in the three groups are respectively set as the first needle selection piece 11, the second needle selection piece 11 and the third needle selection piece 11, then all electromagnetic needle selection member groups The needle selector 11 in the needle selector 1 is arranged in sequence on the same mounting shaft in the order of the first needle selector 11, the second needle selector 11 and the third needle selector 11 (of course the order within the first needle selector 11, the second needle selector 11 and the third needle selector 11 can be changed), and the angles between the first end and the second end of the first needle selector 11, the second needle selector 11 and the third needle selector 11 and their rotation center points are all different, and the magnetic bars 12 corresponding to the first needle selector 11, the second needle selector 11 and the third needle selector 11 are respectively arranged at the second end, so that the axes of the three magnetic bars 12 are located in the same plane, but the directions of the axes do not coincide, and the three magnetic bars 12 are circumferentially distributed around the rotation axis of the needle selector 11, so that three needle selectors 11 can be arranged in a length space with the outer diameter of one magnetic bar 12, which can more reasonably utilize the space of the glove machine, make the spacing between adjacent needle selectors 11 smaller, and make the glove machine smaller.

[0059] Since the enameled wire of the magnetic rod 12 in the electromagnetic needle selection part 1 needs to be electrically connected to the circuit board module, and the circuit board module is located at the magnetic rod 12, and the actual electromagnetic needle selection part 1 and the circuit board module are both located below the needle plate, and the needle guide head and some corresponding scissor mechanisms are located above it, it is easy for oil to flow into the coil and the circuit board to cause short circuit blockage. Therefore, in this embodiment, if Figure 5-Figure 6 As shown, an oil-proof shell 6 is provided outside the electromagnetic needle selector 1 and the circuit board module. The oil-proof shell 6 has a plurality of openings 61 for the selection needle head 111 to extend and swing. The openings 61 of the oil-proof shell 6 face the needle selection portion 24 of the bird piece 2 and are arranged horizontally or obliquely downward in the glove machine. This prevents the openings 61 from facing the needle plate or upward in the glove machine, preventing oil from entering the oil-proof shell 6 through the openings 61, thereby ensuring normal use of the electromagnetic needle selector 1 and the circuit board.

[0060] The embodiment of the present invention further discloses a needle selection method, which is implemented by the above-mentioned electromagnetic needle selection device. The needle selection method includes needle clearing, low needle position needle selection, and high and low needle position needle selection.

[0061] Specifically, the needle clearing includes: first rotating the needle selection shaft 3 until the first arc surface 31 abuts against the protrusion 23 of the bird piece 2, and the needle selection head 111 swings toward the first step surface 241, and swings until it abuts against the side of the first step surface 241. At this time, the position of the bird piece 2 is controlled by the needle selection shaft 3, so that the needle plate needle clock 5 on the needle plate is in the needle plate, which provides convenience for subsequent needle selection and does not affect the movement of the needle guide head to the outside of the weaving area.

[0062] Low needle position needle selection: During the process of the needle selection shaft 3 rotating from the first arc surface 31 to the second arc surface 32 and abutting against the protrusion 23, the needle selection head 111 corresponding to the needle jack that needs to be selected in the knitting area on the needle plate swings from the first step surface 241 to the second step surface 242. When the needle selection shaft 3 rotates to the second arc surface 32 and abuts against the protrusion 23, the needle selection head 111 abuts against the side of the second step surface 242, so that this part of the needle jack needle clock 5 is in a low needle position. At the same time, the needle selection head 111 located at the first step surface 241 abuts against the first step surface 241, so that the needle jack needle clock 5 is in the lowest position. At this time, the needle jack needle clock 5 in the needle plate that does not participate in knitting is at the lowest position and in the needle plate, and is controlled by the needle selection head 111.

[0063] High and low needle position selection: During the process of the needle selection shaft 3 rotating from the first arc surface 31 to the second arc surface 32 and abutting against the protrusion 23, the needle selection head 111 corresponding to the needle jack that needs to select needles in the knitting area on the needle plate swings from the first step surface 241 to the second step surface 242. When the needle selection shaft 3 rotates to the second arc surface 32 and abuts against the protrusion 23, the needle selection head 111 abuts against the side of the second step surface 242, and the needle jack needle clock 5 is in the low needle position. At the same time, the needle selection head 111 located at the first step surface 241 abuts against the first step surface 241, so that the needle jack needle clock 5 is in the lowest position; then the needle selection head 111 corresponding to the needle jack that needs to select high needles continues to move to the second step surface 242. The direction of the three-step surface 243 swings to the needle selection groove where the third step surface 243 is located, and the needle selection head 111 corresponding to the needle jack for low needle position selection remains stationary, and then the needle selection shaft 3 rotates from the second arc surface 32 to the third arc surface 33 and abuts against the protrusion 23, and the needle selection head 111 for low needle position selection abuts against the second step surface 242, so that the needle jack needle clock 5 corresponding to this part of the needle selection head 111 is in the low needle position and is controlled by the needle selection head 111, and the needle selection head 111 for high needle position selection is in the needle selection groove where the third step surface 243 is located, so that the needle jack needle clock 5 corresponding to this part of the needle selection shaft 3 is in the high needle position and is controlled by the needle selection shaft 3, and the needle selection is completed.

[0064] What you need to know is that no matter whether low needle position selection or high and low needle position selection is completed, needle clearing is required. The needle clearing process can be done after each knitting is completed or before each needle selection. Of course, if the needle jack to be knitted next time does not need to be switched, it can be used directly without needle selection or needle clearing.

[0065] Specifically, when selecting the low needle position for clearing the needle, the needle selection shaft 3 can be rotated from the second arc surface 32 to the first arc surface 31 and abut against the protrusion 23, or it can be rotated to the third arc surface 33 first, and then rotated to the first arc surface 31 and abut against the protrusion 23, and the needle selection head 111 swings to the first step surface 241; when selecting the high and low needles for clearing the needle, it is only necessary to rotate the needle selection shaft 3 from the third arc surface 33 to the first arc surface 31 and abut against the protrusion 23, that is, the needle selection head 111 swings to the first step surface 241 accordingly.

[0066] According to the above needle selection method, during normal knitting, when the needle jack needle clock 5 is only used at the lowest position and low needle position, it is only necessary to rotate the needle selection shaft 3 during the needle selection process so that the first arc surface 31 and the second arc surface 32 are in contact with the protrusion 23 in sequence, and there is no need to pass through the third arc surface 33, that is, the needle selection shaft 3 does not need to rotate one circle, which greatly shortens the needle selection time of normal knitting and improves the knitting efficiency. Moreover, when high needle position selection is needed, the needle selection shaft 3 only needs to continue to rotate to the third arc surface 33, and at the same time cooperate with the corresponding needle selection head 111 to select low needle position and high needle position, so that the needle selection time of the entire electromagnetic needle selection device is greatly shortened and the knitting efficiency is greatly improved.

[0067] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A high-speed electromagnetic needle selection device, characterized in that: Including electromagnetic needle selection parts, bird pieces, needle selection shafts, pressure strips and needle jacks; The bird piece and the needle selection shaft are both rotatably arranged, and the bird piece is used in conjunction with the pressure strip, the needle jack and the needle selection shaft; The electromagnetic needle selection member has a needle selection head, and the needle selection head can swing under the magnetic force inside the electromagnetic needle selection member to select the needle; The bird piece has a needle selection part, and the needle selection shaft, the needle selection part and the needle selection head are used in conjunction with each other to select needles; The outer wall of the needle selection shaft is provided with a first arc surface, a second arc surface and a third arc surface, and the distances between the three and the axis thereof decrease successively, so that the needle selection shaft can continuously rotate one circle, and the first arc surface, the second arc surface and the third arc surface can respectively slide against the bird piece, and under the action of the pressure strip, the bird piece can respectively stay at three different positions during the rotation process. At the three stop positions, the needle selection shaft, the needle selection part and the needle selection head are used in combination to switch the needle clock of the needle jack to the lowest position, the low needle position and the high needle position.

2. The electromagnetic needle selection device according to claim 1, characterized in that: A groove is provided on a side of the needle selection portion facing the electromagnetic needle selection member, wherein the groove has a first step surface, a second step surface and a third step surface which are parallel to each other, and the depths of the three step surfaces increase in sequence; The needle selection shaft rotates to the point where the first arc surface abuts against the bird piece, and the needle selection head swings to the first step surface and abuts against its side surface. When the needle selection shaft rotates to the point where the second arc surface abuts against the bird piece, the needle selection head abuts against the first step surface, so that the needle jack is at its lowest position. The needle selection shaft rotates to the second arc surface and abuts against the bird piece, the needle selection head swings to the second step surface and abuts against its side surface, and when the needle selection shaft rotates to the third arc surface and abuts against the bird piece, the needle selection head abuts against the second step surface, so that the needle jack needle clock is in the low needle position; The needle selection shaft rotates until the third arc surface abuts against the bird piece, and the needle selection head swings to the third step surface, so that the needle jack needle clock is in the high needle position.

3. The electromagnetic needle selection device according to claim 2, characterized in that: The first arc surface, the second arc surface and the third arc surface are connected in sequence.

4. The electromagnetic needle selection device according to claim 2, characterized in that: The bird piece has a first portion and a second portion, the first portion and the second portion are respectively located on both sides of the rotation axis of the bird piece, and the first portion cooperates with the needle jack; The pressure strip and the needle selection shaft are located on both sides of the second portion, and the needle selection shaft and the electromagnetic needle selection member are located on the same side relative to the second portion; The pressure strip cooperates with the bird piece so that the bird piece has a tendency to rotate in the forward direction, and the forward rotation of the bird piece causes the needle clock of the needle jack to move from the lowest position to the low needle position and then to the high needle position in sequence; The needle selection part is located in the second part, and a protrusion is provided on the side wall of the second part facing the electromagnetic needle selection member, and the protrusion is in contact with the outer side wall of the needle selection shaft to prevent the bird piece from rotating in the forward direction.

5. The electromagnetic needle selection device according to claim 4, characterized in that: The needle selection portion is further away from the rotation axis of the bird piece than the protrusion.

6. The electromagnetic needle selection device according to claim 2, characterized in that: The electromagnetic needle selection component includes a needle selection piece and a magnetic rod; The needle selector is rotatably arranged and has a first end and a second end, the needle selector head is arranged at the first end, and the second end is provided with a magnet; The end of the magnetic bar is arranged toward the magnet, and the end magnetic pole can be switched between NS; By changing the end poles of the magnetic bar and interacting with the poles at both ends of the magnet, the needle selection head is made to swing, and under the action of the pressure strip, it cooperates with the needle selection shaft and the needle selection part to switch the needle jack needle clock between the lowest position, low needle position and high needle position.

7. The electromagnetic needle selection device according to claim 6, characterized in that: In the swinging direction of the needle selection head, the third step surface is located between the first step surface and the second step surface.

8. The electromagnetic needle selection device according to claim 6, characterized in that: There are multiple electromagnetic needle selection members, and the multiple electromagnetic needle selection members are divided into multiple groups of electromagnetic needle selection members; The needle selection pieces in the plurality of groups of electromagnetic needle selection components are arranged crosswise in sequence; Moreover, in a plane projection perpendicular to the rotation axis of the needle selector jack, the angles between the first end and the second end of the needle selector jack in each group of the electromagnetic needle selector components and the line connecting the rotation center point thereof are different, and the first ends of the needle selector jacks in all the electromagnetic needle selector components coincide with each other; The magnetic bars in all the electromagnetic needle selection component groups are arranged according to the distribution of the second ends of the corresponding needle selection pieces.

9. The electromagnetic needle selection device according to claim 2, characterized in that: The electromagnetic needle selection member and the corresponding circuit board module are covered with an oil-proof shell, and the oil-proof shell has an opening for the needle selection head to extend and swing. The opening of the oil-proof shell faces the needle selection part and is arranged horizontally or obliquely downward in the glove machine.

10. A needle selection method, implemented by the electromagnetic needle selection device according to any one of claims 3 to 7, characterized in that: include: Needle cleaning: first rotate the needle selection shaft until the first arc surface contacts the convex part of the bird piece, and then swing the needle selection head toward the first step surface until it contacts the side surface of the first step surface, so that the needle jack on the needle plate is inside the needle plate; Low needle position needle selection: in the process of the needle selection shaft rotating from the first arc surface to the second arc surface abutting against the protrusion, the needle selection head corresponding to the needle jack that needs to be selected in the knitting area of the needle plate swings from the first step surface to the second step surface. When the needle selection shaft rotates to the second arc surface abutting against the protrusion, the needle selection head abuts against the side surface of the second step surface, so that the needle clock of this part of the needle jack is in the low needle position, and at the same time, the needle selection head that does not participate in needle selection abuts against the bottom surface of the first step surface, so that the needle clock of the needle jack that does not participate in knitting on the needle plate is in the lowest position; High and low needle position selection: in the process of the needle selection shaft rotating from the first arc surface to the second arc surface abutting against the protrusion, the needle selection head corresponding to the needle jack that needs to be selected in the knitting area on the needle plate swings toward the direction of the second step surface. When the needle selection shaft rotates to the second arc surface abutting against the protrusion, the needle selection head abuts against the side surface of the second step surface, and the needle clock of the needle jack is in the low needle position. At the same time, the needle selection head that does not participate in needle selection abuts against the bottom surface of the first step surface, so that the needle clock of the needle jack that does not participate in knitting on the needle plate is in the lowest position; the needle jack corresponding to the needle jack that needs to be selected at a high needle position The needle selection head continues to swing toward the third step surface and enters the needle selection groove where the third step surface is located, while the needle selection head corresponding to the needle jack for low needle position selection remains stationary. Then the needle selection shaft rotates from the second arc surface to the third arc surface and abuts against the protrusion. The needle selection head for low needle position selection abuts against the second step surface, so that the needle jack needle clock corresponding to this part of the needle selection head is in the low needle position. The needle selection head for high needle position selection is in the needle selection groove where the third step surface is located, so that the needle jack needle clock corresponding to this part of the needle selection shaft is in the high needle position, and the needle selection is completed.

Images