A selection mechanism for a flat knitting machine and a flat knitting machine

Abstract

This invention discloses a needle selection mechanism for a flat knitting machine and the flat knitting machine itself, belonging to the field of flat knitting machines. It solves the problem that existing flat knitting machines can only perform direct selection knitting or pre-selection knitting. The technical solution mainly involves a needle selection mechanism for the flat knitting machine, including a cam base plate with a needle selector on it. The needle assembly includes knitting needles, auxiliary needles, and needle selection needles. The cam base plate has a knitting path and a tucking path. A direct selection guide block and a pre-selection guide block are connected to the cam base plate. The direct selection guide block has a clearance position and a working position. The direct selection guide block is located outside the needle selector, and the pre-selection guide block is located between the two needle selectors. The needle selection mechanism has a pre-selection state and a direct selection state. In the pre-selection state, the direct selection guide block is in the clearance position, allowing auxiliary needles to pass through both the knitting path and the tucking path. In the direct selection state, the direct selection guide block is in the working position, allowing auxiliary needles to pass through the knitting path. This invention can mainly perform direct selection knitting and also pre-selection knitting.

Description

Technical Field

[0001] This invention discloses a needle selection mechanism for a flat knitting machine and the flat knitting machine itself, belonging to the field of flat knitting machine technology. Background Technology

[0002] A flat knitting machine uses the regular up-and-down movement of needles to perform actions such as yarn feeding, closing, looping, bending, loop release, and loop formation, thereby completing the knitting of fabric. As the needles rise, the loops gradually exit the hook, the latch opens, and the needle hangs on the needle bar. As the needles descend, the hook catches the newly fed yarn and pulls it to bend into a loop, while the existing loops are released from the hook. The new loops pass through the old loops and are connected in series, with multiple loops formed by the knitting machine linking together to create the woven fabric.

[0003] The component on a flat knitting machine that controls whether the needle participates in knitting, tucking, transferring, or joining loops is called the needle selection mechanism. There are two main types of needle selection mechanisms on existing flat knitting machines: direct selection and pre-selection. The direct selection mechanism selects the needle only once per knitting row. While highly efficient during shaped knitting, the selected needle can only perform one knitting state. For example, during knitting, it can only knit or tuck, not both simultaneously; during transferring, it can only transfer or join loops, not both simultaneously. Because of the limitations of straight-selection needle selection mechanisms, the knitting function of the machine head is greatly restricted, and many weave patterns cannot be knitted. In contrast, the needles corresponding to the selected needle feet in pre-selection needle selection mechanisms can meet two knitting states, such as knitting and gathering simultaneously during knitting, and transferring and joining simultaneously during transfer. Therefore, the knitting function of pre-selection needle selection mechanisms is powerful and the knitting patterns are rich. However, the operating efficiency of pre-selection needle selection mechanisms is low during the finishing stage of forming knitting. And existing flat knitting machines can only perform straight-selection knitting or pre-selection knitting. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that existing flat knitting machines can only perform direct selection knitting or pre-selection knitting. To this end, a needle selection mechanism and a flat knitting machine are provided, which can perform both direct selection knitting and pre-selection knitting.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A needle selection mechanism for a flat knitting machine includes a cam base plate for guiding the movement of a needle assembly. The cam base plate has at least two needle selectors that cooperate with the needle assembly. The needle assembly includes needles, auxiliary needle feet, and needle selectors. The cam base plate has a knitting path for guiding the auxiliary needle feet to a knitting position and a tucking path for guiding the auxiliary needle feet to a tucking position. The cam base plate is movably connected to a straight selection guide block and a needle clearing cam, and is fixedly connected to a pre-selection guide block for exposing the needle selector to the needle groove. The needle clearing cam has a first position exposed above the cam base plate and a second position retracted into the cam base plate. The guide block has a clearance position for avoiding the selected needle and a working position for exposing the selected needle in the needle groove. The direct selection guide block is located outside the needle selector, and the pre-selection guide block is located between the two needle selectors. The needle selection mechanism has a pre-selection state and a direct selection state. In the pre-selection state, the direct selection guide block is in the clearance position, and the needle clearing triangle is in the second position. The needle selection mechanism allows auxiliary needles to pass through both the knitting path and the tucking path. In the direct selection state, the direct selection guide block is in the working position, the needle clearing triangle is in the first position and restricts the auxiliary needles from entering the tucking path. The needle selection mechanism allows auxiliary needles to pass through the knitting path.

[0007] The beneficial effects of using the present invention are:

[0008] The needle selection mechanism described in this invention includes a triangular base plate, on which a direct selection guide block and a pre-selection guide block are provided. The needle selection mechanism has a direct selection state and a pre-selection state. When the needle selection mechanism is in the direct selection state, the direct selection guide block is in the working position. During the movement of the knitting needle assembly along the triangular base plate, the needle foot passes through the direct selection guide block and is exposed in the needle groove under the action of the direct selection guide block. The clearing triangle is in the first position and restricts the auxiliary needle foot from entering the knitting loop path. After passing through the needle selector, the needle selector selects the knitting needle assembly that needs to participate in knitting. Under the action of the needle selection mechanism, the selected knitting needle assembly guides the auxiliary needle foot to move along the knitting path to the knitting position. At the same time, the auxiliary needle foot pushes the knitting needle to the knitting position required for knitting, so that the knitting needle participates in the knitting work and the knitting efficiency is higher.

[0009] When the needle selection mechanism is in the pre-selection state, the direct selection guide block is in the avoidance position. During movement, the needle assembly first passes the pre-selection guide block, exposing the needle selection foot in the needle groove. Then, the needle selector selects the needle assembly to participate in knitting and tucking. After the needle assembly moves to the end of the triangular base plate, it returns and passes through the needle selector again. The needle selector selects the knitting needle assembly to participate in knitting from the selected needle assembly, while the unselected needle assembly participates in tucking. Afterward, under the action of the needle selection mechanism, the needle assembly participating in knitting is guided by the auxiliary needle foot to move along the knitting path to... At the knitting position, the needle assembly participating in the tucking process, under the action of the needle selection mechanism, guides the auxiliary needles to move along the tucking path to the tucking position, enabling the needle assembly to simultaneously satisfy two knitting states, thus possessing a more powerful knitting function and capable of knitting richer patterns. In this invention, the needle selection mechanism has two states: direct selection and pre-selection, which allows the needle assembly to perform direct selection knitting and pre-selection knitting to meet different knitting needs, making the flat knitting machine more applicable, while also reducing the use of different types of flat knitting machines, which helps to reduce knitting costs.

[0010] Preferably, the triangular base plate is equipped with a control mechanism, which is connected to the direct selection and positioning guide block and controls the direct selection and positioning guide block to move along the vertical direction of the triangular base plate, so that the direct selection and positioning guide block switches between an avoidance position and a working position. The aforementioned technical solution is adopted.

[0011] Preferably, the direct selection guide block and the triangular base plate have a first channel for the tail end of the selection pin to pass through. The direct selection guide block is provided with a first protrusion on the side facing the triangular base plate. When the direct selection guide block is in the avoidance position, the first protrusion avoids the selection pin. When the direct selection guide block is in the working position, the first protrusion acts on the tail end of the selection pin and guides the selection pin to protrude from the pin groove.

[0012] Preferably, the first protrusion has a first guide slope on both sides for guiding the pin selection.

[0013] Preferably, the pre-selection guide block and the triangular base plate have a second channel through which the tail end of the selected pin passes, and the pre-selection guide block is provided with a second protrusion on the side facing the triangular base plate. The second protrusion is used to guide the selected pin to protrude from the pin groove.

[0014] Preferably, the triangular base plate is provided with an auxiliary needle path for guiding the movement of auxiliary needles. The auxiliary needle path is provided with a left retaining guard, a right retaining guard and a starting needle triangle assembly. The starting needle triangle assembly is located between the left retaining guard and the right retaining guard, and is used to form the knitting path and the tucking path.

[0015] Preferably, the auxiliary needle also has an initial position and a pre-selected needle position. When the auxiliary needle is in the initial position, the needle heel of the auxiliary needle is located below the starting triangle assembly, and the auxiliary needle reaches the gathering position from the pre-selected needle position through the starting triangle assembly.

[0016] Preferably, the needle clearing triangle includes a left needle clearing triangle and a right needle clearing triangle. The left needle clearing triangle is located on the side of the left retaining guard close to the starting needle triangle assembly, and the right needle clearing triangle is located on the side of the right retaining guard close to the starting needle triangle assembly. When the needle clearing triangle is in the first position, it is used to move the auxiliary needle from the pre-selected needle position to the initial position.

[0017] Preferably, the triangular base plate is provided with a needle selection channel for guiding the movement of the needle selection foot. The needle selection channel includes an upper needle selection channel and a lower needle selection channel, and the needle selector is located between the upper needle selection channel and the lower needle selection channel.

[0018] A flat knitting machine includes a needle selection mechanism and a needle assembly, wherein the needle selection mechanism is a needle selection mechanism of a flat knitting machine as described in any of the above claims.

[0019] Other features and advantages of the present invention will be disclosed in detail in the following detailed description and accompanying drawings. Attached Figure Description

[0020] The invention will be further described below with reference to the accompanying drawings:

[0021] Figure 1 This is a front view of the triangular base plate in Embodiment 1 of the present invention;

[0022] Figure 2 This is a schematic diagram of the machine head moving to the right in the pre-selected state in Embodiment 1 of the present invention;

[0023] Figure 3 This is a schematic diagram of the machine head moving to the left in the pre-selected state in Embodiment 1 of the present invention;

[0024] Figure 4 This is a schematic diagram of the machine head moving to the left in the direct selection state according to Embodiment 1 of the present invention;

[0025] Figure 5 This is a side view of the direct selection return guide block in the avoidance position in Embodiment 1 of the present invention;

[0026] Figure 6 This is a side view of the pre-selected positioning guide block in the working position in Embodiment 1 of the present invention;

[0027] Figure 7 This is a schematic diagram of the direct selection homing guide block in Embodiment 1 of the present invention;

[0028] Figure 8This is a schematic diagram of the pre-selected positioning guide block in Embodiment 1 of the present invention.

[0029] Attached diagram labels: 1. Triangle base plate; 111. Left side retain guard; 112. Middle retain guard; 113. Right side retain guard; 114. Left start triangle; 115. Right start triangle; 116. Left loop triangle; 117. Right loop triangle; 118. Pre-loop triangle; 119. Left clear triangle; 110. Right clear triangle; 121. Left side select needle for upper guard; 122. Middle select needle for upper guard; 123. Right side select needle for upper guard; 124. Select needle guard; 131. Left side select needle for lower guard; 132. Middle select needle. 133 Lower guard, 141 Left push needle triangle, 142 Right push needle triangle, 15 Straight selection return guide block, 151 First protrusion, 152 First guide slope, 153 First channel, 154 Transmission assembly, 16 Pre-selection return guide block, 161 Second protrusion, 162 Second guide slope, 17 Needle selector, 2 Knitting needle assembly, 21 Needle foot, 211 First needle heel, 212 Second needle heel, 213 Needle tail, 22 Auxiliary needle foot, 221 Third needle heel, 23 Needle groove. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0031] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise expressly defined.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] Example 1:

[0035] like Figures 1 to 8 As shown in the figure, this embodiment illustrates a needle selection mechanism for a flat knitting machine, including a triangular base plate 1 for guiding the movement of the needle assembly 2. The needle assembly 2 includes needles, auxiliary needle feet 22, and needle selection feet 21. The triangular base plate 1 is provided with an auxiliary needle path for guiding the movement of the auxiliary needle feet 22 and a needle selection needle path for guiding the movement of the needle selection feet 21. The needle selection needle path includes an upper needle selection needle path and a lower needle selection needle path, and a plurality of needle selectors 17 are provided between the upper needle selection needle path and the lower needle selection needle path.

[0036] like Figure 1 As shown, in this embodiment, the auxiliary needle path is provided with a left retaining guard 111, a middle retaining guard 112, a right retaining guard 113, a left clearing needle triangle 119, a right clearing needle triangle 110, and a starting needle triangle assembly. The triangular base plate 1 is provided with two starting needle triangle assemblies and a control mechanism for driving the starting needle triangle assemblies. The two starting needle triangle assemblies are respectively located between the left retaining guard 111 and the middle retaining guard 112, and between the middle retaining guard 112 and the right retaining guard 113. The left clearing needle triangle 119 is located between the left retaining guard 111 and the starting needle triangle assembly, and the right clearing needle triangle 110 is located between the right retaining guard and the starting needle triangle assembly. The auxiliary needle path passes from left to right sequentially through the left retaining guard, the left clearing needle triangle 119, the starting needle triangle assembly, the middle retaining guard 112, the starting needle triangle assembly, the right clearing needle triangle 110, and the right retaining guard 113.

[0037] like Figure 1As shown in the figure, the upper needle selection channel in this embodiment is provided with a left upper needle selection guard 121, a middle upper needle selection guard 122, a right upper needle selection guard 123, and a needle selection guard 124. The upper needle selection channel passes through the left upper needle selection guard 121, the needle selection guard 124, the middle upper needle selection guard 122, and the right upper needle selection guard 123 from left to right. The lower needle selection channel is provided with a left lower needle selection guard 131, a middle lower needle selection guard 132, a right lower needle selection guard 133, and two needle pushing components. One of the two needle pushing components is located between the left lower needle selection guard 131 and the middle lower needle selection guard 132, and the other is located between the middle lower needle selection guard 132 and the right lower needle selection guard 133. The lower needle selection channel passes through the left lower needle selection guard 131, the needle pushing component, the middle lower needle selection guard 132, the needle pushing component, and the right lower needle selection guard 133 from left to right.

[0038] In addition, in this embodiment, the triangular base plate 1 is provided with two sets of needle selectors 17, each set having two needle selectors 17. One needle selector 17 is located between the left needle selector lower guard 131 and the needle pusher assembly, and the other needle selector 17 is located between the needle pusher assembly and the middle needle selector lower guard 132. The lower side of the triangular base plate 1 is provided with a direct selection return guide block 15 and a pre-selection return guide block 16, wherein the direct selection return guide block 15 is located to the left of the left needle selector lower guard 131, and the pre-selection return guide block 16 is located between the two needle selectors 17.

[0039] In this embodiment, the starting triangle assembly includes a left starting triangle 114, a right starting triangle 115, a left connecting triangle 116, a right connecting triangle 117, and a pre-connecting triangle 118. The left connecting triangle 116 and the right connecting triangle 117 are symmetrically arranged on both sides of the pre-connecting triangle 118, and the left starting triangle 114 and the right starting triangle 115 are symmetrically arranged on both sides of the left connecting triangle 116 and the right connecting triangle 117. The starting triangle assembly is connected to a control mechanism, which drives the starting triangle assembly to move vertically along the triangle base plate 1, thereby controlling the left starting triangle. Triangle 114, right-starting-pin triangle 115, left-connecting-pin triangle 116, right-connecting-pin triangle 117, and pre-connecting-pin triangle 118 are exposed or retracted into the triangle base plate 1; the pusher assembly includes a left pusher triangle 141 and a right pusher triangle 142, and a pre-selection return guide block 16 is located between the left pusher triangle 141 and the right pusher triangle 142. The pusher assembly is connected to the control mechanism, and the control mechanism drives the pusher assembly to move vertically along the triangle base plate 1, thereby controlling the left pusher triangle 141 and the right pusher triangle 142 to be exposed or retracted into the triangle base plate 1.

[0040] like Figures 5 to 8As shown, in this embodiment, the direct selection guide block 15 and the triangular base plate 1 have a first channel 153 through which the needle tail 213 of the selected needle 21 passes. The direct selection guide block 15 has a first protrusion 151 on the side facing the triangular base plate 1, and first guide ramps 152 on both sides of the first protrusion 151 for guiding the selected needle 21. The direct selection guide block 15 has a clearance position and a working position. The direct selection guide block 15 is connected to the control mechanism via a transmission assembly 154. The control mechanism drives the direct selection guide block 15 to move along the vertical direction of the triangular base plate 1, so that the direct selection guide block 15 is in the clearance position and the working position. When switching between working positions, when the direct selection return guide block 15 is in the avoidance position, the first protrusion 151 avoids the selection pin 21. When the direct selection return guide block 15 is in the working position, the first protrusion 151 acts on the tail end of the selection pin 21 and guides the selection pin 21 to protrude from the needle groove 23. The pre-selection return guide block 16 is fixed to the triangular base plate 1. There is a second channel between the pre-selection return guide block 16 and the triangular base plate 1 for the tail end of the selection pin 21 to pass through. The pre-selection return guide block 16 is provided with a second protrusion 161 on the side facing the triangular base plate 1. The second protrusion 161 is provided with a second guide slope 162 on both sides for guiding the selection pin 21.

[0041] The needle selection foot 21 includes a needle tail 213, a first needle heel 211, and a second needle heel 212. The first needle heel 211 moves along the upper needle selection path and forms a first moving path 2111. The second needle heel 212 moves along the lower needle selection path. When the needle selection foot 21 is in the needle groove 23, the second needle heel 212 is also in the needle groove 23. The needle selection foot 21 does not contact the lower needle selection path during movement. After the needle tail 213 of the needle selection foot 21 rotates toward the triangular base plate 1 under the action of the direct selection return guide block 15 or the pre-selection return guide block 16, the first needle heel 211 is exposed in the needle groove 23, thereby causing the second needle heel 212 to move along the lower needle selection path and form a second moving path 2121. The auxiliary needle foot 22 includes a third needle heel 221. The third needle heel 221 moves along the auxiliary needle path and forms a third moving path 2211.

[0042] In this embodiment, the needle selection mechanism has a direct selection state and a pre-selection state. The auxiliary needle 22 has an initial position, a pre-selection needle position, a knitting position, and a tucking position. When the auxiliary needle 22 is in the initial position, the needle selection needle 21 is also in the initial position, and the lower end of the auxiliary needle 22 abuts against the upper end of the needle selection needle 21. When the auxiliary needle 22 is in the pre-selection needle position, the auxiliary needle 22 pushes the knitting needle into the pre-selection needle state. When the auxiliary needle 22 is in the knitting position, the auxiliary needle 22 pushes the knitting needle into the knitting state so that the knitting needle participates in knitting. When the auxiliary needle 22 is in the tucking position, the auxiliary needle 22 pushes the knitting needle into the tucking state so that the knitting needle participates in tucking.

[0043] When the needle selection mechanism is in the pre-selection state:

[0044] This embodiment uses the coding system on the left as an example, such as... Figure 2 As shown, when the needle selection mechanism is in the pre-selection state, the left push needle triangle 141, the right loop triangle 117, and the left clear needle triangle 119 retract into the triangle base plate 1, and the direct selection return guide block 15 is in the avoidance position. In this embodiment, the knitting machine head moves to the right, that is, the knitting needle assembly 2 moves to the left relative to the triangle base plate 1. Initially, since the needle selection foot 21 is in the needle groove 23, that is, the second needle heel 212 is in the needle groove 23 and does not contact the lower selection needle path, the auxiliary needle foot 22 and the needle selection foot 21 are both in the initial position. When the knitting needle assembly 2 moves to the pre-selection return guide block 16, the needle tail 213 of the needle selection foot 21 enters the second channel and contacts the second protrusion 161. Under the guidance of the second guide inclined surface 162, the needle tail 213 rotates toward the triangle base plate 1, so that the second needle heel 212 is exposed in the needle groove 23 and moves along the lower selection needle path. After the needle assembly 2 moves to the needle selector 17, the needle selector 17 selects the needle foot 21 corresponding to the needle that needs to participate in knitting and tucking. Other needle feet 21 are pushed back into the needle groove 23. The selected needle foot 21 keeps the second needle heel 212 exposed in the needle groove 23. Then, under the action of the left needle lower guard 131, the needle foot 21 rises to the pre-selected needle position. At the same time, the needle foot 21 pushes the auxiliary needle foot 22 to rise to the pre-selected needle position. The auxiliary needle foot 22 pushes the knitting needle into the pre-selected needle state. Then, under the action of the left needle upper guard 121, the needle foot 21 returns to the initial position. Since the direct selection return guide block 15 is in the avoidance position, the needle tail 213 of the needle foot 21 passes through the first channel 153 without contacting the first protrusion 151. The auxiliary needle foot 22 returns to the initial position under the action of the left retaining guard 111. The knitting needle is still in the pre-selected needle state.

[0045] like Figure 3As shown, when the needle assembly 2 is at the leftmost end of the triangular base plate 1, the machine head reverses direction to the left, that is, the needle assembly 2 moves to the right relative to the triangular base plate 1. Since the direct selection return guide block 15 is in the avoidance position, the needle tail 213 of the needle selection foot 21 passes through the first channel 153 without contacting the first protrusion 151. Under the action of the left needle selection lower guard 131, the needle selection foot 21 rises to the pre-selected needle position. At the same time, the needle selection foot 21 pushes the auxiliary needle foot 22 to rise to the pre-selected needle position. Under the action of the left needle selection upper guard 121, the needle selection foot 21 returns to the initial position. At this time, the auxiliary needle foot 22 and the needle are still in the pre-selected needle position. Then the needle selector 17 works again, selecting the needle selection foot 21 corresponding to the needle that needs to participate in knitting. The needle selection foot 21 corresponding to the needle participating in the knitting loop is pushed back to the needle groove 23. The auxiliary needle foot 22 corresponding to the needle participating in the knitting loop is still in the pre-selected needle position. The position, that is, the needle selection foot 21 corresponding to the needle participating in knitting, moves along the lower needle selection needle path at this time. The selected needle selection foot 21 rises under the drive of the left push needle triangle 141. The auxiliary needle foot 22 rises to the knitting position along the left start needle triangle 114 under the push of the needle selection foot 21. At the same time, the auxiliary needle foot 22 pushes the knitting needle into the knitting state so that the knitting needle participates in knitting. Afterwards, the needle selection foot 21 returns to the initial position under the action of the needle selection guard 124. In addition, since the auxiliary needle foot 22 corresponding to the knitting needle participating in the knitting loop is still in the pre-selected needle position, the auxiliary needle foot 22 rises to the knitting loop position under the action of the pre-joining loop triangle 118, the right joining loop triangle 117, and the right start needle triangle 115. At the same time, the auxiliary needle foot 22 pushes the knitting needle into the knitting loop state so that the knitting needle participates in the knitting loop. Afterwards, all auxiliary needle feet 22 return to the initial position under the action of the middle retaining guard 112. Figure 3 In the third movement route, the solid line trajectory is a loop route, and the dashed line trajectory is a weaving route.

[0046] When the needle selection mechanism is in direct selection mode:

[0047] This embodiment uses the coding system on the left as an example, such as... Figure 4As shown, when the needle selection mechanism is in the direct selection state, the right push needle triangle 142 and the left connecting ring triangle 116 are both retracted into the triangle base plate 1, the left clear needle triangle 119 extends out of the triangle base plate 1, and the direct selection return guide block 15 is in the working position. In this embodiment, the knitting machine head moves to the left, that is, the needle assembly 2 moves to the right relative to the triangle base plate 1. When the needle assembly 2 moves to the direct selection return guide block 15, the needle tail 213 of the needle selection foot 21 enters the first channel 153 and contacts the first protrusion 151. Under the action of the first guide inclined surface 152, the needle tail 213 rotates towards the triangle base plate 1 so that the second needle heel 212 is exposed in the needle groove 23 and moves along the lower needle selection needle path. The needle selection foot 21 rises to the pre-selected needle position under the action of the left needle selection lower guard 131. The needle selector 21 pushes the auxiliary needle 22 up to the pre-selected needle position. The needle selector 21 returns to its initial position under the action of the left needle selector guard 121. The auxiliary needle 22 returns to its initial position under the action of the left needle clearing triangle 119. Then the needle selector 17 works, selecting the needle selector 21 corresponding to the needle to be knitted. The needle selector 21 rises under the action of the left needle push triangle 141. The auxiliary needle 22 rises to the knitting position along the left needle start triangle 114 under the push of the needle selector 21. At the same time, the auxiliary needle 22 pushes the knitting needle into the knitting state so that the knitting needle can participate in knitting. Then the needle selector 21 returns to its initial position under the action of the needle selector guard 124. The auxiliary needle 22 returns to its initial position under the action of the middle retaining guard 112.

[0048] The needle selection mechanism described in this embodiment has two states: direct selection and pre-selection. This allows the needle assembly 2 to perform direct selection knitting and pre-selection knitting to meet different knitting needs, making the flat knitting machine more applicable and reducing the use of different types of flat knitting machines, which helps to reduce knitting costs.

[0049] Example 2:

[0050] This embodiment illustrates a flat knitting machine, including a needle selection mechanism and a needle assembly 2. The needle selection mechanism adopts the needle selection mechanism of a flat knitting machine as described in Embodiment 1.

[0051] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. A needle selection mechanism for a flat knitting machine, comprising a triangular base plate for guiding the movement of a needle assembly, wherein the triangular base plate is provided with at least two needle selectors that cooperate with the needle assembly, the needle assembly comprising needles, auxiliary needle feet, and needle selection feet, characterized in that: The triangular base plate has a knitting path for the auxiliary needles to reach the knitting position and a tucking path for the auxiliary needles to reach the tucking position. The triangular base plate is movably connected to a straight selection guide block and a needle clearing triangle, and is fixedly connected to a pre-selection guide block for exposing the selected needles in the needle groove. The needle clearing triangle has a first position exposed on the triangular base plate and a second position retracted into the triangular base plate. The straight selection guide block has a clearance position for avoiding the selected needles and a working position for exposing the selected needles in the needle groove. The straight selection guide block is located outside the needle selector, and the pre-selection guide block is located between the two needle selectors. The needle selection mechanism has a pre-selection state and a straight selection state. In the pre-selection state, the straight selection guide block is in the clearance position, and the needle clearing triangle is in the second position. The needle selection mechanism allows auxiliary needles to pass through both the knitting path and the tucking path. In the straight selection state, the straight selection guide block is in the working position, and the needle clearing triangle is in the first position and restricts the auxiliary needles from entering the tucking path. The needle selection mechanism allows auxiliary needles to pass through the knitting path.

2. The needle selection mechanism of a flat knitting machine according to claim 1, characterized in that: The triangular base plate is equipped with a control mechanism, which is connected to the direct selection and positioning guide block and controls the direct selection and positioning guide block to move along the vertical direction of the triangular base plate so that the direct selection and positioning guide block switches between the avoidance position and the working position.

3. The needle selection mechanism of a flat knitting machine according to claim 1, characterized in that: There is a first channel between the direct selection guide block and the triangular base plate for the tail end of the selection pin to pass through. The direct selection guide block is provided with a first protrusion on the side facing the triangular base plate. When the direct selection guide block is in the avoidance position, the first protrusion avoids the selection pin. When the direct selection guide block is in the working position, the first protrusion acts on the tail end of the selection pin and guides the selection pin to protrude from the pin groove.

4. The needle selection mechanism of a flat knitting machine according to claim 3, characterized in that: The first protrusion has first guide slopes on both sides for guiding the selection pin.

5. The needle selection mechanism of a flat knitting machine according to claim 1, characterized in that: There is a second channel between the pre-selection positioning guide block and the triangular base plate for the tail end of the selected pin to pass through. The pre-selection positioning guide block has a second protrusion on the side facing the triangular base plate. The second protrusion is used to guide the selected pin to protrude from the pin groove.

6. The needle selection mechanism of a flat knitting machine according to claim 1, characterized in that: The triangular base plate is provided with an auxiliary needle path for guiding the movement of auxiliary needles. The auxiliary needle path is provided with a left retaining guard, a right retaining guard and a starting needle triangle assembly. The starting needle triangle assembly is located between the left retaining guard and the right retaining guard. The starting needle triangle assembly is used to form the knitting path and the tucking path.

7. The needle selection mechanism of a flat knitting machine according to claim 6, characterized in that: The auxiliary needle also has an initial position and a pre-selected needle position. When the auxiliary needle is in the initial position, the needle heel of the auxiliary needle is located below the starting triangle assembly. The auxiliary needle moves from the pre-selected needle position to the gathering position through the starting triangle assembly.

8. The needle selection mechanism of a flat knitting machine according to claim 7, characterized in that: The needle clearing triangle includes a left needle clearing triangle and a right needle clearing triangle. The left needle clearing triangle is located on the side of the left retaining guard closest to the starting needle triangle assembly, and the right needle clearing triangle is located on the side of the right retaining guard closest to the starting needle triangle assembly. When the needle clearing triangle is in the first position, it is used to move the auxiliary needle from the pre-selected needle position to the initial position.

9. The needle selection mechanism of a flat knitting machine according to claim 1, characterized in that: The triangular base plate is provided with a needle selection channel for guiding the movement of the needle selection foot. The needle selection channel includes an upper needle selection channel and a lower needle selection channel, and the needle selector is located between the upper needle selection channel and the lower needle selection channel.

10. A flat knitting machine, comprising a needle selection mechanism and a needle assembly, characterized in that: The needle selection mechanism is a needle selection mechanism for a flat knitting machine as described in any one of claims 1 to 9.

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