Hidden knitting needle faller mechanism of computerized flat knitting machine
By introducing a sinker and a curved structure into the needle assembly of a computerized flat knitting machine, the problem of collision between the needle heel and the cam system is solved, thereby improving the stability of the needle and the knitting quality.
Patent Information
- Application Number
- CN202421229117.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-31
AI Technical Summary
In existing computerized flat knitting machines, during high-speed movement, the needle heels of needles that are not in operation are prone to collide with the cam system, resulting in damage to the needles or distortion and deformation of the needle grooves on the needle plate, which affects the knitting quality.
Design a hidden needle plate mechanism for computerized flat knitting machines. By setting a sinker at the bottom of the needle groove, and introducing a transition needle and a pusher needle into the needle assembly, the transition needle sinks into the sinker when not in use. The bending structure and limiting part prevent collision, and the pusher needle and the insert maintain stability through the bending part.
It effectively reduces the collision between the needle heel and the cam system, improves knitting stability, reduces the risk of needle damage and needle groove deformation, and improves knitting quality.
Smart Images
Figure CN222434755U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a needle plate assembly of a computerized flat knitting machine, in particular to a hidden knitting needle plate mechanism of the computerized flat knitting machine. Background Art
[0002] Computerized flat knitting machine is a kind of weft knitting loom. Its cam system is like a set of flat cams. The needle butt of the knitting needle can enter the groove of the cam system, and then the knitting needle is forced to make regular up-and-down movements in the needle groove of the needle plate by moving the cam. This movement combined with the action of the needle hook and the needle tongue can weave the yarn into a knitted fabric. It should be noted that now that the basic structure and working mode of computerized flat knitting machines have become mature, the optimization degree of the needle plate assembly structure during the knitting process of computerized flat knitting machines largely determines the quality of the knitted fabric, that is, the quality of CHINT computerized flat knitting machines.
[0003] The existing needle plate assembly mainly includes a needle plate, a knitting needle assembly, and a cam system. The knitting needle assembly is driven by the cam system to reciprocate in the needle groove to make a lifting action, thereby completing the looping action of guiding the yarn during the knitting process.
[0004] It should be noted that the existing knitting needle movement is usually completed by the cooperation of the needle butt on the knitting needle assembly and the cam system. The cam moves at high speed under the guidance of the driving mechanism, and completes the purposeful guidance of the knitting needle through the change of its own groove during the high-speed movement. However, in the pursuit of knitting efficiency, the movement speed of the existing cam system is getting faster and faster. If the needle butt of the knitting needle on the needle plate that is not in the knitting state is always in a state of being higher than the needle groove, it is very easy to be hit by the moving cam assembly, resulting in malfunction of the knitting needle or even needle collision. If a needle collision occurs, the knitting needle will be damaged at the least, and the needle groove of the needle plate may be distorted and deformed, and the entire needle plate needs to be repaired.
[0005] For this reason, it is very necessary to develop a needle plate assembly that can sink into the needle groove to prevent the needle butts of the knitting needles from being hit by the high-speed running cam system when not in a working state. Utility Model Content
[0006] The utility model aims to provide a hidden needle plate mechanism for a computerized flat knitting machine, so that the needle butts of the knitting needles not in working state can be hidden in the needle grooves, thereby reducing the possibility of the needle butts of the knitting needles colliding with the cam system.
[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0008] A computerized flat knitting machine with a hidden needle plate mechanism, comprising
[0009] Needle plate;
[0010] A plurality of inserting pieces, wherein the plurality of inserting pieces are installed on the needle plate at equal intervals, so that adjacent inserting pieces and the surface of the clamped needle plate form a needle groove, and a downwardly concave groove is provided at the bottom of the needle groove, and the groove wall of the groove located on the needle outlet side is inclined toward the needle outlet direction;
[0011] A knitting needle assembly, the knitting needle assembly comprising a knitting needle body, a transition needle, a push needle and a selection needle which are sequentially slidably arranged in the needle groove, the knitting needle body is slidably arranged in the needle groove, a notch is provided at the rear end of the knitting needle body, the notch has an arc-shaped groove wall which is coaxially bent and extended; the front end of the transition needle has a head X, the head X is arranged in the notch, and the surface of the head X is smoothly fitted to the groove wall of the notch, the rear end of the transition needle has a needle butt extending upward and a pin extending downward, after the needle butt is pressed and sunk into the groove, the pin follows and sinks into the groove.
[0012] Preferably, the rear end of the knitting needle body further has an upper limit portion extending backwards, and after the transition needle is lifted to a horizontal position, the lower edge of the upper limit portion abuts against the upper edge of the transition needle.
[0013] Preferably, the pin has an inclined surface located on the same side as the recess.
[0014] Preferably, the rear end of the knitting needle body also has a lower limit part extending backward, and the upper edge of the lower limit part is inclined downward. After the transition needle is turned down until the needle butt sinks into the needle groove, the lower edge of the transition needle abuts against the upper edge of the upper limit part.
[0015] Preferably, the running surface of the transition needle when sliding in the needle groove is a guide surface, and the transition needle has a curved portion X in the middle, and the curved portion X is bent in a direction deviating from the guide surface so that one end of the transition needle deviates from the guide surface.
[0016] Preferably, the thickness of the curved portion X is smaller than the thickness of the transition needle.
[0017] Preferably, the rear end of the transition needle has a tail portion X protruding backwards, and the front end of the selection needle has a protruding head portion Y. When the transition needle is horizontal, the head portion Y can enter under the tail portion X.
[0018] Preferably, the push pin has a bent portion Y in the middle, and the bent portion Y is bent in a direction deviating from the guide surface, so that one end of the push pin deviates outside the guide surface.
[0019] Preferably, the thickness of the curved portion Y is smaller than the thickness of the push pin.
[0020] Preferably, a pressure strip is provided on the insert, and the pressure strip is smoothly pressed against the upper edge of the knitting needle body.
[0021] Compared with the prior art, the beneficial effects of the utility model are:
[0022] 1. This solution provides a sinking groove at the bottom of the needle groove, and the needle body part in the needle assembly can slide horizontally in the needle groove, while the transition needle part connected to the needle body part and cooperating with the cam system is connected to the rear end of the needle body. After being acted on downward, the pin part of the transition needle part can sink into the sinking groove, and the needle butt part can follow and sink into the needle groove, thereby reducing the possibility of collision between the knitting needle and the cam system when not knitting.
[0023] 2. Set the upper limit part to limit the upper limit of the upward transition needle to prevent it from over-turning and colliding with the high-speed cam system.
[0024] 3. The transition needle is guided by the curved part X to achieve overall bending. When the transition needle is placed in the needle groove, the side of the curved transition needle abuts against the side wall of the needle groove. The friction between the transition needle and the side wall of the needle groove can maintain the stability of the transition needle when it is not subjected to external force.
[0025] 4. The thickness of the curved portion X of the transition needle is less than the thickness of the transition needle, so as to facilitate the bending operation when manufacturing the curved portion X. In addition, the thinning of the curved portion X can make the portion have better elastic deformation ability, so that the transition needle can have better elastic stretching performance in the needle groove, reducing excessive wear between the curved transition needle and the side wall of the needle groove.
[0026] 5. The pins are set with an inclined surface so that they can slide out of the sink more smoothly.
[0027] 6. The push pin located behind the transition pin also has a curved structure, so that the side surface can be abutted against the side wall of the needle groove through its own curved structure. While eliminating the left and right shaking of the push pin in the needle groove, it can also ensure that the head of the push pin will not sink into the groove due to its own gravity when passing through the groove, thereby causing the push pin to collide with the groove.
[0028] 7. The thickness of the bent portion Y of the push pin is smaller than the thickness of the push pin, so as to facilitate the bending operation when manufacturing the bent portion Y. In addition, the thinning of the bent portion Y can make the portion have better elastic deformation ability, so that the transition needle can have better elastic stretching performance in the needle groove, reducing excessive wear between the bent transition needle and the side wall of the needle groove.
[0029] 8. A pressure strip is provided on the insert so that when the knitting needle body placed in the needle groove slides in the needle groove, its upper part can be continuously restricted by the pressure strip to maintain the horizontal state of the knitting needle body when sliding in the needle groove. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 It is a structural schematic diagram of the utility model when the knitting needle assembly does not perform the knitting function and the needle heel of the transition needle sinks in the sink groove;
[0031] Figure 2 This is a state diagram of the knitting needle assembly of the utility model when it extends out of the needle groove;
[0032] Figure 3 This is a schematic diagram of the state in which the knitting needle retreats to the rear of the steel wire XG when adjusting the fabric bulk density during knitting;
[0033] Figure 4 It is a diagram showing the state changes of the transition needle in the needle groove under various knitting conditions when the knitting needle is knitting;
[0034] Figure 5 It is a structural schematic diagram of a knitting needle body;
[0035] Figure 6 It is a schematic diagram of the structure of the transition needle;
[0036] Figure 7 is a top view of the transition needle;
[0037] Figure 8 It is a schematic diagram of the structure of the push pin;
[0038] Fig. 9 It is a top view of the push pin;
[0039] Fig.10 It is a cross-sectional view of the needle plate.
[0040] Reference numerals:
[0041] 1. Needle plate 11. Sink
[0042] 2. Insert
[0043] 3. Needle body 31. Notch 32. Upper limit part
[0044] 4. Transition needle 41. Head X 42. Pin 43. Butt 44. Bevel 45. Tail X 46. Curved part X
[0045] 5. Push pin 51. Head Y 52. Bend part Y
[0046] 6. Needle selection
[0047] 7. Layering
[0048] 8. Steel Wire
[0049] 9. Guide surface. DETAILED DESCRIPTION
[0050] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0052] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0053] like Figures 1 to 10 The hidden needle plate mechanism of a computerized flat knitting machine shown in the figure comprises a needle plate 1, on which a number of slots are evenly spaced, and inserts 2 are inserted into the slots one by one, and adjacent inserts and the clamped needle plate surface form needle grooves. The needle assembly is slidably arranged in the needle groove, so that the movement of the needle assembly is constrained and guided by the inserts on both sides, thereby preventing the needle assembly from deviating to the left and right and affecting the knitting stability. When it is necessary to explain, such as Fig.10 As shown, a downwardly sunken groove 11 is provided at the bottom of the needle groove, and the groove wall of the groove close to the needle outlet side is inclined toward the needle outlet direction to facilitate the knitting needle assembly subsequently sunk into the groove to slide out of the groove.
[0054] like Figures 1 to 3As shown, in this scheme, the knitting needle assembly specifically includes a knitting needle body 3, a transition needle 4, a push needle 5, and a selection needle 6, which are arranged in the needle groove from front to back in sequence. Among them, the knitting needle body and the transition needle are connected so that the two can keep synchronous advance and retreat. Specifically, a notch 31 is provided at the rear end of the knitting needle body 3, and the notch has an arc-shaped groove wall that is coaxially bent and extended, that is, the notch is a C-shaped structure with an opening smaller than the diameter. The front end of the transition needle 4 has a head X41, and the head X is a circular structure. When the head X41 is embedded in the notch 31, the surface of the head X is smoothly fitted on the groove wall of the notch to ensure that the head can rotate in the notch. It should be noted that the transition needle can realize rotation with the head X as the axis through the head X, that is, the transition needle can rotate relative to the knitting needle body in the needle groove.
[0055] In addition, it should be noted that in this solution, the rear end of the transition needle has a portion extending upward, which forms a needle butt 43 extending out of the needle groove. At the same time, the rear end of the transition needle has a portion extending downward, and forms a pin 42. When the butt of the transition needle is subjected to downward pressure from the cam system, the transition needle rotates with the head X as the axis, and the pin of the transition needle sinks into the sinking groove. At the same time, the needle butt also sinks into the needle groove to avoid the needle butt of the transition needle colliding with the cam system when the knitting needle is not in working state.
[0056] It should be noted that under the above structure, the transition needle may be over-turned. Not only does the butt of the transition needle rise excessively, but because it rotates around the head X, it also deviates from the correct position, resulting in the inability of the subsequent triangle system to accurately push and guide the butt of the transition needle. To solve this problem, the present scheme is optimized through the following structure. Specifically, the rear end of the knitting needle body 3 also has an upper limit portion 32 extending backwards, and the upper limit portion is specifically in the form of a long strip and extends horizontally. It should be noted that when the transition needle is turned up to a horizontal position, the lower edge of the upper limit portion abuts against the upper edge of the transition needle body to prevent it from continuing to turn up.
[0057] It should be noted that, in the above solution, in order to further improve the smoothness of the pin 42 withdrawing from the sink, the pin and the side surface of the inclined side wall of the sink have a slope 44 inclined in the same direction.
[0058] In addition, it should be noted that after the knitting needle assembly has been sliding in the needle groove for a long time, it is inevitable that there will be mutual wear between it and the insert. If the needle assembly and the insert are seriously worn, the knitting needle assembly will inevitably shake left and right during knitting, affecting the stability of the knitting action. For this reason, it is necessary to prevent this situation. In detail, taking the vertical plane on which the knitting needle assembly runs in the needle groove as the guide surface 9, the transition needle 4 only needs to be in a C-shaped bending state, so that after the transition needle is placed in the needle groove, it can be elastically abutted against the side of the insert forming the needle groove. Specifically, in order to simplify the bending structure of the transition needle, there is a bending part X46 in the middle of the transition needle, and the front and rear sections of the transition needle are respectively connected to the bending part X46 to form a bending structure. At this time, one of the front section structure or the rear end structure of the transition needle must deviate from the guide surface 9. It should be noted that, in the present embodiment, the bending of the transition needle is achieved only through the bending part X to realize the bending of the overall structure. Therefore, the front and rear sections of the structure connected to the bending part are still in a straight extension state. When the transition needle is placed in the needle groove, no matter whether it is the front section structure or the rear section structure of the transition needle, there must be a section that is slid in the needle groove in a surface contact manner. This can not only reduce the contact pressure between the transition needle and the insert and reduce the wear rate, but the surface contact can also improve the sliding stability of the transition needle in the needle groove.
[0059] In addition, it should be noted that when the looseness of the knitting needle material needs to be adjusted, the knitting needle body needs to retreat to different degrees in the needle groove. In some cases (when the fabric is looser), the knitting needle body needs to retreat to the rear of the steel wire 8. At this time, the pins of the transition needle connected thereto must also be synchronously retreated to the rear of the sinking groove. If the transition needle sinks into the sinking groove due to its own gravity at this time, the pins will inevitably hit the side wall of the sinking groove during the retreat process, causing the accident of hitting the needle. If the transition needle has a curved structure, the friction between the transition needle and the insert can effectively prevent the transition needle from sinking into the sinking groove due to gravity during the retreat process.
[0060] In addition, as a preferred embodiment, the thickness of the curved portion X46 of the transition needle is less than the overall thickness of the transition needle. It should be noted that making the thickness of the curved portion X of the transition needle thinner can improve the elastic deformation capacity of the curved portion X, that is, after the transition needle is placed in the needle groove, its bending shape can be concentrated on the thinned curved portion X.
[0061] In addition, in the present embodiment, further safeguards are provided during the transition needle retreat process, that is, to prevent the pins of the transition needle from sinking into the sink groove due to gravity. The rear end of the transition needle 4 also has a tail X protruding backwards, and the lower surface of the tail X is higher than the bottom of the needle groove. At the same time, the front end of the push pin 5 has a protruding head Y51, and when the head Y is pushed forward, the head Y can be inserted under the tail X of the transition needle to support the tail X. It should be noted that in the present embodiment, in order to ensure the stability of the push pin in the needle groove, to prevent the push pin from rising and falling in the needle groove, to reduce the left and right deviation of the push pin in the needle groove, and to improve the stability of the push pin 5 when pushing the transition needle, the push pin is bent in a C shape as a whole. Specifically, the middle of the push pin 5 has a curved portion Y52, and the two ends of the curved portion Y are respectively connected to the front and rear sections of the push pin, so that the push pin has a curved structure as a whole. It should be noted that, as a preferred embodiment, in the present embodiment, the front and rear sections of the push pin are still in a straight extension state, then a part of the front end or rear section of the push pin must deviate from the guide surface 9 under the guidance of the curved portion Y, so that after the push pin is placed in the needle groove, the front section or rear section can still be slid in the needle groove in a surface contact manner.
[0062] It should be noted that, in this solution, in order to make the push pin have better elastic deformation ability, the bending part is concentrated on the bending part Y as much as possible, and the thickness of the bending part Y is smaller than the overall thickness of the push pin.
[0063] In addition, during the sliding process of the knitting needle body, especially during the knitting looping process, the needle hook part of the knitting needle body is subjected to a force partially perpendicular to the length direction of the knitting needle, which easily causes the knitting needle body to float up in the needle groove. For this reason, the present solution also includes a pressure strip 7, which is smoothly pressed against the upper edge of the knitting needle body 3 to prevent the knitting needle body from being pressed and flipping out of the needle groove. It should be noted that in the present solution, the pressure strip is mounted in a slot provided on the insert to facilitate the fixing of the pressure strip during assembly.
[0064] Working principle: During knitting, the triangle system drives the knitting needle assembly to make the needle position of the knitting needle assembly change accordingly.
[0065] Specifically, when the needle is removed, the cam system pushes the butt of the push pin 5 to move the push pin 5, and the head 51 of the push pin 5 hits the end surface of the tail X of the transition needle 4, thereby pushing the transition needle 4 to move synchronously. The inclined side wall of the sink groove 11 on the needle plate 1 cooperates with the inclined surface 44 of the transition needle 4, and the butt 43 of the transition needle will slowly expose the needle groove surface until the pin 42 of the transition needle 4 contacts the bottom of the needle groove, and the needle is lifted. Then the butt 43 of the transition needle 4 is pushed by the external cam system to move the transition needle 4 and drive the knitting needle body 3 to move, so as to realize the removal of the needle. When the needle is removed, the bottom surface of the pin 42 of the transition needle 4 contacts the bottom of the needle groove, and the upper edge of the transition needle abuts against the upper limit part 32 of the knitting needle body to realize the limit. The knitting needle body 3 is provided with a pressure strip 9 on the top, and the pressure strip 9 is installed in the groove opened by the insert to realize the horizontal limit of the knitting needle body and increase the stability of the needle removal.
[0066] In addition, it should be noted that when weaving computer flat knitting machine fabrics, loose density is required to make the fabric density loose. When making the density loose, the farther the hook of the knitting needle 3 is away from the steel wire 8, the looser the density. The transition needle 4 butt 43 is pushed by the triangular system until the hook of the knitting needle 3 is away from the steel wire 8. Since the transition needle 4 moves with the push needle 5, the tail X45 of the transition needle 4 is always supported by the head Y of the push needle 5 and will not cause it to sink due to its own gravity when it reaches the reset point (above the sinking groove), affecting the fabric to be woven with loose density. It should be noted that in this solution, because the transition needle has a certain curvature as a whole, the transition needle 4 can have a frictional contact with the side wall of the needle groove, so as to further prevent the transition needle from falling due to gravity.
[0067] In addition, the transition needle 4 is in a bent state, which can also make the transition needle 4 expand and tighten in the needle groove, and there is pressure without causing up and down movement and left and right deviation. When resetting, when the transition needle 4 sinks in the needle groove, the needle butt 43 will not float out of the needle groove surface due to external uncertain factors to affect normal knitting. The push needle 5 is also made into a bent state, so that it expands and tightens in the needle groove without movement, making the push needle more stable.
[0068] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A computerized flat knitting machine with a hidden needle plate mechanism, characterized in that: include Needle plate (1); A plurality of inserting pieces (2), the plurality of inserting pieces (2) being installed on the needle plate (1) at equal intervals, so that adjacent inserting pieces (2) and the surface of the clamped needle plate (1) form a needle groove, a downwardly concave groove (11) being provided at the bottom of the groove of the needle groove, and a groove wall of the groove (11) located on the needle outlet side being inclined toward the needle outlet direction; A knitting needle assembly, the knitting needle assembly comprising a knitting needle body (3), a transition needle (4), a push needle (5) and a selection needle (6) which are sequentially slidably arranged in the needle groove, the knitting needle body (3) is slidably arranged in the needle groove, a slot (31) is provided at the rear end of the knitting needle body (3), the slot (31) has an arc slot wall which is coaxially bent and extended; the front end of the transition needle (4) has a head X (41), the head X (41) is arranged in the slot (31), and the surface of the head X (41) is smoothly fitted on the slot wall of the slot (31); the rear end of the transition needle (4) has a needle butt (43) extending upward and a pin (42) extending downward, after the needle butt (43) is pressed and sunk into the slot, the pin (42) follows and sinks into the sinking groove (11).
2. A computerized flat knitting machine with hidden needle plate mechanism as claimed in claim 1, characterized in that: The rear end of the knitting needle body (3) also has an upper limit portion (32) extending backwards, and after the transition needle (4) is lifted to a horizontal position, the lower edge of the upper limit portion (32) abuts against the upper edge of the transition needle (4).
3. A computerized flat knitting machine with hidden needle plate mechanism as claimed in claim 1, characterized in that: The pin (42) has an inclined surface (44) located on the same side as the recess (11).
4. A computerized flat knitting machine with hidden needle plate mechanism as claimed in claim 1, characterized in that: The running surface of the transition needle (4) when sliding in the needle groove is the guide surface (9). The transition needle (4) has a curved portion X (46) in the middle, and the curved portion X (46) is curved in a direction deviating from the guide surface (9) so that one end of the transition needle (4) deviates from the guide surface (9).
5. A computerized flat knitting machine with hidden needle plate mechanism as claimed in claim 4, characterized in that: The thickness of the curved portion X (46) is smaller than the thickness of the transition needle (4).
6. A computerized flat knitting machine with hidden needle plate mechanism as claimed in claim 5, characterized in that: The rear end of the transition needle (4) has a tail portion X protruding backwards, and the front end of the selection needle (6) has a protruding head portion Y (51). When the transition needle (4) is horizontal, the head portion Y (51) can enter below the tail portion X.
7. A computerized flat knitting machine with hidden needle plate mechanism as claimed in claim 6, characterized in that: The push pin (5) has a curved portion Y (52) in the middle, and the curved portion Y (52) is curved in a direction deviating from the guide surface (9) so that one end of the push pin (5) deviates outside the guide surface (9).
8. A computerized flat knitting machine with hidden needle plate mechanism as claimed in claim 7, characterized in that: The thickness of the curved portion Y (52) is smaller than the thickness of the push pin (5).
9. A computerized flat knitting machine with hidden needle plate mechanism as claimed in claim 1, characterized in that: A pressure strip (7) is arranged on the inserting piece (2), and the pressure strip (7) is smoothly pressed against the upper edge of the knitting needle body (3).