A flat knitting machine

Abstract

The application discloses a kind of flat knitting machine, belong to flat knitting machine field, solve the problem that sinker cannot effectively and reliably press loop in prior art, simultaneously difficult to meet the transfer loop and local knitting needs, the technical scheme for solving this problem is mainly a kind of flat knitting machine, including needle bed, sinker and drive mechanism, the needle bed is equipped with insert piece, the insert piece is penetrated with positioning shaft, the sinker includes base body and elastic arm, base body is equipped with piece heel and waist type hole, one end of the elastic arm is connected to base body, the other end is abutted with support shaft and generates deformation, the sinker has initial position, upper moving position and loop pressing position, the deformation amount of elastic arm when sinker is in loop pressing position is less than the deformation amount of elastic arm when sinker is in upper moving position.The application is mainly used to realize the automatic flexible adjustment of sinker.

Description

[Technical Field]

[0001] This invention demonstrates a flat knitting machine, belonging to the field of flat knitting machine technology. [Background Technology]

[0002] A flat knitting machine is a double-needle plate-latch weft knitting machine. The cam mechanism on the needle bed acts like a set of planar cams. The needle feet can enter the grooves of the cams. Moving the cams forces the needles to move up and down rhythmically within the needle grooves of the needle bed. Through the movement of the hooks and latches, the yarn is knitted into a fabric. During the upward movement of the needles, the loops gradually exit the hooks, the latches open, and the loops are hooked onto the needle bar. During the downward movement of the needles, the hooks catch newly placed yarn and pull and bend it into a loop. At the same time, the existing loops exit the hooks, and the new loops pass through the old loops and are connected in series. Multiple loops knitted by the needles are interconnected to form the fabric.

[0003] Flat knitting machines are equipped with sinkers, which press or block the loops during the loop-forming process, thus greatly increasing the knitting function of the machine and enriching the patterns of the knitted fabrics. However, in the existing technology, when the sinkers are closed, they cannot effectively and reliably press the loops or long dotted lines. Instead, they often penetrate into the loops or long dotted lines, causing the loops to move upwards with the needle and become unable to detach from the needle's latch. This prevents the needle from completing the knitting process and results in damage to the knitted fabric.

[0004] In addition, in existing technologies, the sinker is usually controlled to close by a drive mechanism, so the closing position of the sinker is always consistent. However, when the needle moves a loop, the closing position of the sinker needs to be shallow to prevent the sinker from crushing the loop. When the needle is knitting a partial loop, the closing position of the sinker needs to be deep to meet the requirements of loop unwinding. Therefore, in existing technologies, the sinker cannot achieve automatic flexible adjustment, making it difficult to meet the needs of both loop moving and partial knitting at the same time. [Summary of the Invention]

[0005] The purpose of this invention is to solve the problem that the sinker in the prior art cannot effectively and reliably press the coil, and at the same time it is difficult to meet the needs of coil shifting and local knitting. To this end, a flat knitting machine is provided in which the sinker can achieve automatic flexible adjustment.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A flat knitting machine includes a needle bed, a sinker, and a drive mechanism for moving the sinker. The needle bed has several spaced-apart inserts, and the sinker is movably installed between two adjacent inserts. Several positioning shafts pass through the inserts, and each positioning shaft includes a support shaft and a rotation shaft. The sinker includes a base and an elastic arm. The base has a heel that is connected to the drive mechanism and a waist-shaped hole through which the rotation shaft passes. One end of the elastic arm is connected to the base, and the other end abuts against the support shaft and deforms. The sinker has an initial position, an upward position, and a pressing ring position. The rotation shaft moves relative to the waist-shaped hole to move the sinker between the initial position and the upward position. The sinker rotates around the rotation shaft to rotate between the upward position and the pressing ring position. When the sinker is in the pressing ring position, the deformation of the elastic arm is smaller than that when the sinker is in the upward position.

[0008] The beneficial effects of using the present invention are:

[0009] The positioning shaft in this invention includes a support shaft and a rotating shaft. The settling plate includes a base and an elastic arm. When the settling plate is in its initial position, one end of the elastic arm abuts against the support shaft and deforms. At this time, the driving mechanism limits the base and restricts its rotation. When the machine starts working, the driving mechanism drives the settling plate to move upward through the plate heel, that is, the rotating shaft moves downward relative to the waist-shaped hole. During the upward movement of the settling plate, the elastic arm maintains its deformation. At the same time, the driving mechanism limits the base so that the base moves to the upward position along the length direction of the waist-shaped hole. When the settling plate presses the coil, the driving mechanism disengages from the base. The base rotates around the rotating shaft under the action of the elastic arm, thereby causing the settling plate to press the coil.

[0010] In this invention, the sinker moves from its initial position to an upward position through translation, and then rotates to reach the pressing position. Therefore, the pressing position of the sinker is higher than the initial position, which can effectively prevent the sinker from drilling into the coil or long dotted line after rotation. This allows the sinker to effectively and reliably press the coil or long dotted line on the knitting needle, thereby allowing the coil to unwind normally so that the knitting needle can complete the knitting smoothly and improve the yield.

[0011] Furthermore, during the process of the sinker plate rotating from the upper position to the pressure ring position, the drive mechanism disengages from the base body, and the elastic arm rebounds under its own elasticity, causing the base body to rotate around the rotation axis and reach the pressure ring position. At this time, the deformation of the elastic arm is less than the deformation of the sinker plate when it is in the upper position. When the knitting needle is knitting, the force of the coil on the sinker plate is small. Therefore, the sinker plate can press the coil at a lower position under the action of the elastic arm to meet the requirement of the coil being able to unwind. When the knitting needle is moving the coil, after the coil on the knitting needle unwinds, the coil... As the needle moves up to its highest position, the loop exerts a significant pushing force on the sinker during its ascent. This force forces the elastic arm to deform further, causing the base to rotate at an angle towards the upward position, thus maintaining the sinker at a higher position and preventing it from crushing the loop. In this invention, the depth of the sinker's closed position can be automatically and flexibly adjusted according to the external force exerted by the loop on the sinker, enabling the sinker to simultaneously meet the needs of loop shifting and localized knitting, effectively improving the sinker's applicability.

[0012] Preferably, the elastic arm has a positioning protrusion on the side facing the support shaft. This positioning protrusion extends beyond the support shaft to switch the settling plate between its initial and upward positions. By employing the aforementioned technical solution, the positioning protrusion and the support shaft form a positioning system, effectively reducing the possibility of slippage in the elastic arm and ensuring more stable and reliable positioning of the settling plate in its initial and upward positions.

[0013] Preferably, the positioning shaft further includes a first limiting shaft and a second limiting shaft for limiting the rotation range of the sinker, with the first limiting shaft and the second limiting shaft located on both sides of the base. Using the aforementioned technical solution, the first limiting shaft and the second limiting shaft are clamped on both sides of the base, thereby limiting the rotation range of the sinker, making the closure of the sinker more stable and reliable, and allowing the knitting needles to complete the knitting smoothly.

[0014] Preferably, the settling plate is provided with an abutting surface that cooperates with the first limiting shaft. The abutting surface includes a supporting surface and a lower limiting surface. When the settling plate is in the initial position, the first limiting shaft abuts against the supporting surface; when the settling plate is in the upward position, the first limiting shaft disengages from the supporting surface; when the settling plate is in the pressure ring position, the first limiting shaft abuts against the lower limiting surface.

[0015] Preferably, a guide ramp for transition is provided between the support surface and the lower limit surface.

[0016] Preferably, the substrate is provided with an upper limit surface that cooperates with the second limiting shaft. When the settling plate is in the initial position and the upward position, the upper limit surface is in contact with the second limiting shaft. When the settling plate is in the pressure ring position, the upper limit surface is disengaged from the second limiting shaft.

[0017] Preferably, the driving mechanism includes a retaining member, and the base is provided with a retaining surface that cooperates with the retaining member for limiting. When the settling plate is in the initial position and the upward position, the retaining member and the retaining surface remain in contact. The retaining member cooperates with the second limiting shaft to restrict the rotation of the settling plate. When the settling plate is in the pressure ring position, the retaining member disengages from the retaining surface, and the settling plate rotates around the rotation axis under the action of the elastic arm.

[0018] Preferably, the elastic arm is connected to the upper end of the base, and a clearance gap is formed between the elastic arm and the base.

[0019] Preferably, the upper end of the insert is provided with a toothed piece, and a slot is formed between two adjacent toothed pieces. The upper end of the base is connected to a pressure ring, which extends into the slot.

[0020] Preferably, the upper end of the needle bed is provided with a groove, and the pressure ring part has a guide part that extends into the groove.

[0021] Other features and advantages of the present invention will be disclosed in detail in the following detailed description and accompanying drawings. [Attached Image Description]

[0022] The invention will be further described below with reference to the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the structure of a flat knitting machine according to the present invention;

[0024] Figure 2 This is a cross-sectional view of a sinker in the initial position in a flat knitting machine according to the present invention;

[0025] Figure 3 This is a cross-sectional view of a sinker in an upwardly moved position in a flat knitting machine according to the present invention;

[0026] Figure 4 This is a cross-sectional view of a sinker plate in the pressure ring position in a flat knitting machine according to the present invention;

[0027] Figure 5 This is a front view of a sinker in a flat knitting machine according to the present invention;

[0028] Figure 6 This is a front view of the settling plate in another embodiment of the present invention;

[0029] Figure 7 This is a cross-sectional view of the settling plate in its initial position in another embodiment of the present invention;

[0030] Figure 8 This is a partially enlarged view of a flat knitting machine according to the present invention;

[0031] Figure 9 This is a partial enlarged view of a flat knitting machine according to another embodiment of the present invention.

[0032] Reference numerals: 1. Needle bed; 11. Groove; 2. Insert; 21. Toothed piece; 211. Slot; 3. Sinking piece; 31. Base; 311. Waist-shaped hole; 312. Abutting surface; 3121. Supporting surface; 3122. Lower limit surface; 3123. Guide slope; 313. Clearance gap; 32. Elastic arm; 321. Positioning protrusion; 33. Pressure ring part; 331. Guide part; 332. Pressure ring surface; 34. Heel; 35. Supporting surface; 41. Support shaft; 42. Rotation shaft; 43. First limit shaft; 44. Second limit shaft; 5. Signal spacer.

Detailed Implementation Methods

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] like Figures 1 to 9As shown in the figure, this embodiment illustrates a flat knitting machine, including a needle bed 1, a sinker 3, and a drive mechanism for moving the sinker 3. The needle bed 1 is provided with a plurality of spaced inserts 2. The sinker 3 is movably installed between two adjacent inserts 2. A plurality of positioning shafts pass through the inserts 2. The positioning shafts include a support shaft 41, a rotation shaft 42, a first limiting shaft 43, and a second limiting shaft 44.

[0038] like Figure 5 As shown, in this embodiment, the settling plate 3 includes a base 31, an elastic arm 32, and a pressure ring 33. One end of the elastic arm 32 is connected to the upper end of the base 31, and the other end abuts against the support shaft 41 and deforms. A clearance gap 313 is formed between the elastic arm 32 and the base 31. The pressure ring 33 is connected to the upper end of the base 31. The upper end of the insert 2 is provided with a toothed piece 21, and a slot 211 is formed between two adjacent toothed pieces 21. The pressure ring 33 extends into the slot 211. In addition, in this embodiment, the pressure ring 33 is provided with a guide part 331 and a pressure ring surface 332 for pressing the coil. The upper end of the needle bed 1 is provided with several slots 11. The toothed pieces 21 are inserted into the slots 11. The pressure ring 33 has a guide part 331 that extends into the slots 11.

[0039] It should be noted that, as Figure 8 As shown in this embodiment, the guide portion 331 and the toothed piece 21 on one side of the settling piece 3 are simultaneously inserted into the same slot 11; as Figure 9 As shown, in other embodiments, only one toothed piece 21 or one guide 331 can be inserted into the slot 11. The toothed piece 21 and the guide 331 are inserted into the slot 11 in sequence, thereby reducing the number of settling pieces 3. In addition, a spacer 5 is added between the settling piece 3 and the insert 2 on one side, thereby reducing the shaking amplitude of the settling piece 3.

[0040] Secondly, in this embodiment, the base 31 is provided with an upper limit surface, a heel 34, and a support surface 35. The upper limit surface is located on the side of the base 31 away from the elastic arm 32, and the upper limit surface is in a limiting fit with the second limiting shaft 44. The support surface 35 is located at the lower end of the base 31. The drive mechanism is provided with a support member that abuts against the support surface 35. The support member cooperates with the second limiting shaft 44 to limit the settling plate 3, thereby restricting the rotation of the settling plate 3. The heel 34 is located between the upper limit surface and the support surface 35, and the heel 34 is exposed between two adjacent inserts 2. The drive mechanism is connected to the heel 34 and drives the entire settling plate 3 to move through the heel 34. The settling plate 3 is provided with a waist-shaped hole 311 through which the rotating shaft 42 passes. The length direction of the waist-shaped hole 311 is parallel to the length direction of the base 31.

[0041] Other examples Figure 2and Figure 5 As shown, in this embodiment, the base 31 is provided with an abutment surface 312 that cooperates with the first limiting shaft 43. The abutment surface 312 is located within the avoidance gap 313. The abutment surface 312 is located on the side of the base 31 facing the elastic arm 32. The abutment surface 312 includes a support surface 3121, a lower limiting surface 3122, and a guide inclined surface 3123 for transition. In this embodiment, the first limiting shaft 43 and the second limiting shaft 44 are respectively located on both sides of the base 31. The first limiting shaft 43 and the second limiting shaft 44 clamp the base 31, thereby limiting the rotation range of the sinker 3, making the closure of the sinker 3 more stable and reliable, and allowing the knitting needle to complete the knitting smoothly. It should be noted that, as Figure 6 and Figure 7 As shown, in other embodiments, the abutment surface 312 can also be disposed on the elastic arm 32, and the abutment surface 312 is located at the connection between the elastic arm 32 and the base 31. Figures 2 to 4 As shown, in this embodiment, the settling plate 3 includes an initial position, an upward position, and a pressure ring position. The elastic arm 32 is provided with a positioning protrusion 321 on the side facing the support shaft 41. The positioning protrusion 321 passes over the support shaft 41 to realize the switching of the settling plate 3 between the initial position and the upward position. The positioning protrusion 321 and the support shaft 41 form a positioning, which can effectively reduce the possibility of slippage of the elastic arm 32 and ensure that the positioning of the settling plate 3 in the initial position and the upward position is more stable and reliable.

[0042] like Figure 2 As shown, the settling plate 3 is in its initial position. In this state, the elastic arm 32 abuts against the support shaft 41, and the support shaft 41 is located above the positioning protrusion 321. At this time, the elastic arm 32 deforms under the action of the support shaft 41, and the deformation is relatively large. In addition, the rotating shaft 42 is located at the upper end of the waist-shaped hole 311. At the same time, the first limiting shaft 43 abuts against the support surface 3121, and the second limiting shaft 44 abuts against the upper limiting surface or has a small gap, thereby restricting the rotation of the base 31 and keeping the elastic arm 32 in a deformed state. At this time, the settling plate 3 does not work.

[0043] like Figure 3As shown, at this time, the settling plate 3 is in the upward position. In this embodiment, the driving mechanism drives the entire settling plate 3 to move upward through the plate heel 34. During the movement, the second limiting shaft 44 and the upper limiting surface remain in contact or have a slight gap. At the same time, the supporting member and the supporting surface 35 also remain in contact. Therefore, the settling plate 3 will not rotate during the upward movement, realizing the translation of the settling plate 3. When the settling plate 3 reaches the upward position, the positioning protrusion 321 of the elastic arm 32 passes over the support shaft 41, so that the support shaft 41 is below the positioning protrusion 321. At this time, the elastic arm 32 still maintains a large deformation. In addition, the first limiting shaft 43 moves downward relative to the base 31, so that the first limiting shaft 43 is disengaged from the support surface 3121. Similarly, the rotating shaft 42 moves downward relative to the waist-shaped hole 311, so that the rotating shaft 42 reaches the lower end of the waist-shaped hole 311. In this state, the pressing part 33 of the settling plate 3 is in the highest position, so as to press the coil.

[0044] like Figure 4 As shown, at this time, the settling plate 3 is in the pressure ring position. After the guarding member in the driving mechanism in this embodiment is separated from the guarding surface 35, the lower end of the base 31 loses the support of external force. Under the action of the elastic arm 32, the base 31 rotates counterclockwise around the rotation axis 42. At this time, the lower limit surface 3122 abuts against the first limit axis 43, thereby limiting the rotation amplitude of the base 31. This can effectively prevent the base 31 from rotating excessively and causing the settling plate 3 to press against the toothed wire of the toothed plate 21. When the settling plate 3 presses against the toothed wire, during the process of the settling plate 3 returning to the initial position, the pressure ring part 33 of the settling plate 3 may hook onto the toothed wire, thereby causing damage to the pressure ring part 33 or the toothed wire. In addition, since the elastic part of the elastic arm 32 is released, the elastic deformation of the elastic arm 32 is small in this state.

[0045] In this embodiment, the sinker 3 moves from its initial position to an upward position by translation, and then rotates to the pressing position. Therefore, the pressing position of the sinker 3 is higher than its initial position, which can effectively prevent the sinker 3 from drilling into the coil or long dotted line after rotation. This allows the sinker 3 to effectively and reliably press the coil or long dotted line on the knitting needle, so that the coil can be unwound normally, and the knitting needle can complete the knitting smoothly, thus improving the yield.

[0046] In addition, during the process of the sinker 3 rotating from the upper position to the pressing position in this embodiment, the drive mechanism disengages from the base 31, and the elastic arm 32 rebounds under its own elasticity, causing the base 31 to rotate around the rotation axis 42 and reach the pressing position. At this time, the deformation of the elastic arm 32 is less than the deformation of the sinker 3 when it is in the upper position. When the knitting needle is knitting, the force of the coil on the sinker 3 is small. Therefore, the sinker 3 can press the coil at a lower position under the action of the elastic arm 32 to meet the requirement that the coil can be uncoiled. When the knitting needle moves the coil, after the coil on the knitting needle is uncoiled... As the loop moves along with the needle, it rises to its highest position. During this ascent, the loop exerts a significant pushing force on the sinker 3. Under this force, the base 31 is forced to further deform the elastic arm 32, causing the base 31 to rotate at a certain angle towards the upward position. This keeps the sinker 3 in a higher position, preventing it from crushing the loop. In this embodiment, the depth of the sinker 3's closed position can be automatically and flexibly adjusted according to the external force exerted by the loop on the sinker 3. This allows the sinker 3 to simultaneously meet the needs of loop shifting and localized knitting, effectively improving the applicability of the sinker 3.

[0047] 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 flat knitting machine, comprising a needle bed, sinkers, and a drive mechanism for moving the sinkers, wherein the needle bed is provided with a plurality of spaced-apart inserts, the sinkers are movably installed between two adjacent inserts, and a plurality of positioning shafts pass through the inserts, characterized in that: The positioning shaft includes a support shaft and a rotating shaft. The settling plate includes a base and an elastic arm. The base is provided with a heel that is connected to the driving mechanism and an oblong hole through which the rotating shaft passes. One end of the elastic arm is connected to the base, and the other end abuts against the support shaft and deforms. The settling plate has an initial position, an upward position, and a pressure ring position. The rotating shaft moves relative to the oblong hole to move the settling plate between the initial position and the upward position. The settling plate rotates around the rotating shaft to rotate between the upward position and the pressure ring position. The settling plate moves from the initial position to the upward position by translation and then to the pressure ring position by rotation. When the settling plate is in the pressure ring position, the deformation of the elastic arm is less than that when the settling plate is in the upward position.

2. The flat knitting machine according to claim 1, characterized in that: The elastic arm has a positioning protrusion on the side facing the support shaft. The positioning protrusion passes over the support shaft to switch the sinking plate between the initial position and the upward position.

3. A flat knitting machine according to claim 1, characterized in that: The positioning shaft also includes a first limiting shaft and a second limiting shaft for limiting the rotation range of the settling plate, with the first limiting shaft and the second limiting shaft located on both sides of the base.

4. A flat knitting machine according to claim 3, characterized in that: The settling plate is provided with an abutting surface that cooperates with the first limiting shaft. The abutting surface includes a supporting surface and a lower limiting surface. When the settling plate is in the initial position, the first limiting shaft abuts against the supporting surface; when the settling plate is in the upward position, the first limiting shaft disengages from the supporting surface; when the settling plate is in the pressure ring position, the first limiting shaft abuts against the lower limiting surface.

5. A flat knitting machine according to claim 4, characterized in that: A guide ramp for transition is provided between the support surface and the lower limit surface.

6. A flat knitting machine according to claim 4, characterized in that: The substrate is provided with an upper limit surface that cooperates with the second limiting shaft. When the settling plate is in the initial position and the upward position, the upper limit surface is in contact with the second limiting shaft. When the settling plate is in the pressure ring position, the upper limit surface is disengaged from the second limiting shaft.

7. A flat knitting machine according to claim 6, characterized in that: The driving mechanism includes a retaining member. The base is provided with a retaining surface that cooperates with the retaining member for limiting. When the settling plate is in the initial position and the upward position, the retaining member and the retaining surface remain in contact. The retaining member cooperates with the second limiting shaft to restrict the rotation of the settling plate. When the settling plate is in the pressure ring position, the retaining member disengages from the retaining surface, and the settling plate rotates around the rotation axis under the action of the elastic arm.

8. A flat knitting machine according to claim 3, characterized in that: The elastic arm is connected to the upper end of the base, and a clearance gap is formed between the elastic arm and the base.

9. A flat knitting machine according to claim 1, characterized in that: The upper end of the insert is provided with a toothed piece, and a slot is formed between two adjacent toothed pieces. The upper end of the base is connected to a pressure ring, which extends into the slot.

10. A flat knitting machine according to claim 9, characterized in that: The upper end of the needle bed is provided with a groove, and the pressure ring part has a guide part that extends into the groove.

Images