Needle head capturing mechanism and flat knitting machine

Abstract

The utility model discloses a needle capturing mechanism and a flat knitting machine, and relates to the technical field of textile equipment, the needle capturing mechanism comprises a capturing assembly, the capturing assembly comprises a cylinder, a capturing arm and a driving rod, the middle of the capturing arm is hinged with the inner wall of the cylinder, one end of the capturing arm far away from the inner wall of the cylinder is rotatably connected with the driving rod, and one end of the capturing arm close to the inner wall of the cylinder is provided with a capturing part; the pushing assembly comprises a swing disc and a push rod, one end of the push rod is hinged to the rack, the other end of the push rod abuts against the end of the driving rod, and the middle of the push rod extends towards the swing disc to form an abutting table. According to the needle head capturing mechanism and the flat knitting machine, the capturing arm of the capturing assembly extends out of the swing arm groove through periodic driving of the driving rod to capture the needle head. After the swing rhythm of the swing disc and the capture arm is calibrated, the capture success rate of the needle head at each time can be guaranteed, the missed stitch phenomenon is reduced, the stability of a mechanical transmission structure is better, and the production efficiency and the production quality of the flat knitting machine are improved.

Description

Technical Field

[0001] This utility model relates to the field of textile equipment technology, and in particular to a needle capture mechanism and a flat knitting machine. Background Technology

[0002] A knitting machine is a type of machinery used in the textile industry. It uses tools such as needles, shuttles, and crochet hooks to weave yarn or filaments into fabric or knitted goods. The working principle of a knitting machine is that the needles on the needle bed and the crochet hooks on the cylinder work together to interweave the yarn or filaments according to the designed knitting pattern, thereby forming fabric or knitted goods.

[0003] In a flat knitting machine, the needles are forced to move up and down rhythmically within the needle slots of the needle plate by a moving cam. As the needle rises, the loops gradually exit the hook, the latch opens, and the loops retract and hang on the needle bar. As the needle descends, the hook catches newly placed yarn and pulls it into a loop, while existing loops exit the hook. New loops pass through old loops and connect with them in series. These numerous loops interlock to form the knitted fabric.

[0004] The main function of needle capture is to ensure that the knitting needles can accurately catch the yarn during high-speed movement and stably hold the yarn during loop formation. Existing needle capture structures are prone to needle slippage or needle bounce during practical use, affecting the production efficiency and product quality of knitting machines. Utility Model Content

[0005] This invention aims to at least solve the technical problem in the prior art where "existing needle capture structures are prone to needle slippage or needle bounce during actual use, affecting the production efficiency and product quality of knitting machines." To address this, this invention proposes a needle capture mechanism and a flat knitting machine that can adjust the needle capture rhythm, synchronously rotate to increase the capture success rate, and improve the production efficiency and yield of the knitting machine.

[0006] According to some embodiments of the present invention, a needle-catching mechanism is installed on the frame of a flat knitting machine; comprising:

[0007] A capture assembly, mounted on the frame, includes a cylinder, a capture arm, and a drive rod. The middle part of the capture arm is hinged to the inner wall of the cylinder. The end of the capture arm away from the inner wall of the cylinder is rotatably connected to the drive rod. A capture part is provided at the end of the capture arm near the inner wall of the cylinder. A swing arm groove is provided in the area of ​​the cylinder corresponding to the capture part. The drive rod drives the capture arm to rotate around the hinge and causes the capture part to extend out of the swing arm groove.

[0008] The pushing assembly includes a swing disk and a push rod. One end of the push rod is hinged to the frame, and the other end abuts against the end of the drive rod. The middle part of the push rod extends toward the swing disk to form an abutment platform. A capture protrusion is provided around the periphery of the swing disk. When the abutment platform abuts against the capture protrusion, the push rod swings around the hinge point to push the drive rod.

[0009] The motor drive assembly includes an output shaft, a first transmission gear, and a second transmission gear. The first transmission gear and the second transmission gear are keyed to the output shaft. The first transmission gear is driven to the push assembly, and the second transmission gear is driven to the capture assembly.

[0010] According to some embodiments of the present invention, the cylinder is provided with through connecting columns at both ends, the connecting columns are rotatably connected to the bearing seats of the frame, the drive rod extends into the cylinder and one end is sleeved with the connecting column, and the other end of the drive rod passes through the connecting column and extends to the push rod.

[0011] According to some embodiments of the present invention, a driving boss is provided at one end of the driving rod near the push rod, and the driving boss abuts against the end of the push rod.

[0012] According to some embodiments of the present invention, the capturing component includes a third transmission tooth, which is sleeved with the connecting post and meshes with the second transmission tooth for transmission.

[0013] According to some embodiments of the present invention, the capturing part is provided with a racetrack-shaped through hole, and the capturing arm rotates around the hinge to make the racetrack-shaped through hole extend from the swing arm groove to the outer wall end face of the cylinder.

[0014] According to some embodiments of the present invention, the drive rod is sleeved with a return spring, which is located between the capture arm and the inner wall of the cylinder. When the drive rod pushes the capture arm to swing, the return spring resets the capture arm.

[0015] According to some embodiments of the present invention, the pushing component includes a fourth transmission tooth, the output shaft of the swing disk is keyed to the fourth transmission tooth, and the fourth transmission tooth meshes with the first transmission tooth for transmission.

[0016] According to some embodiments of the present invention, an inclined guide platform is provided between the top of the capturing boss and the end face of the swing disk, and the abutment platform slides along the guide platform to the top of the capturing boss.

[0017] According to some embodiments of the present invention, the abutment platform is located within the rotation range of the capturing boss, and the rotation of the swing disk is used to drive the push rod to periodically push the drive rod.

[0018] A flat knitting machine according to some embodiments of the present invention includes the needle capture mechanism described above.

[0019] The needle-catching mechanism and flat knitting machine according to some embodiments of this utility model have at least the following beneficial effects: the catching arm of the catching assembly extends from the swing arm groove to catch the needle through the periodic drive of the drive rod. The swing period of the catching arm is adjusted by the catching boss on the swing plate, and both are driven by the motor drive assembly, resulting in high stability. When the swing rhythm of the swing plate and the catching arm is calibrated, the success rate of needle catching can be guaranteed every time, reducing needle leakage, and the mechanical transmission structure has better stability, thus improving the production efficiency and quality of the flat knitting machine.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0022] Figure 1 This is a three-dimensional schematic diagram of the needle-capturing mechanism according to an embodiment of the present invention;

[0023] Figure 2 This is a partial cross-sectional view of the needle-catching mechanism according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the pushing component of the needle capturing mechanism in an embodiment of the present invention.

[0025] Figure label:

[0026] Cylinder 110, swing arm groove 111, connecting column 112, capture arm 120, capture part 121, racetrack-shaped through hole 121a, drive rod 130, drive boss 131, third transmission gear 140.

[0027] Swing disk 210, capturing boss 211, guide platform 212, push rod 220, abutment platform 221, fourth transmission gear 230

[0028] Output shaft 310, first transmission gear 320, second transmission gear 330. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, top, bottom, etc., are based on the directional or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0031] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] The following is for reference. Figures 1-3 This invention describes a needle-catching mechanism and a flat knitting machine according to embodiments of the present invention.

[0034] like Figures 1-3 As shown, the needle-catching mechanism is mounted on the frame of the flat knitting machine, located on the side of the needle movement area. The main function of the needle-catching mechanism is to ensure that the knitting needles can accurately catch the yarn during high-speed movement and stably hold the yarn during loop formation. In this embodiment, the needle-catching mechanism includes a catching component, a pushing component, and a motor drive component.

[0035] Specifically, the capture assembly is mounted on a frame and includes a cylinder 110, a capture arm 120, and a drive rod 130. The capture arm 120 is hinged to the inner wall of the cylinder 110 at its middle section. The end of the capture arm 120 away from the inner wall of the cylinder 110 is rotatably connected to the drive rod 130. A capture part 121 is provided at the end of the capture arm 120 near the inner wall of the cylinder 110. A swing arm groove 111 is provided in the area of ​​the cylinder 110 corresponding to the capture part 121. The drive rod 130 drives the capture arm 120 to rotate around the hinge and causes the capture part 121 to extend out of the swing arm groove 111. In this embodiment, the cylinder 110 is a cylindrical cylinder 110. The drive rod 130 rotates coaxially with the cylinder 110. The drive rod 130, the cylinder 110 and the capture arm 120 rotate synchronously to ensure that the capture arm 120 and the swing arm groove 111 are relatively stationary. When the drive rod 130 pushes the capture arm 120, the capture arm 120 rotates around the hinge point, thereby causing the capture part 121 to extend from the swing arm groove 111 and capture the needle.

[0036] The pushing assembly includes a swing disk 210 and a push rod 220. One end of the push rod 220 is hinged to the frame, and the other end abuts against the end of the drive rod 130. The middle part of the push rod 220 extends towards the swing disk 210 to form an abutment platform 221. A capture boss 211 is provided around the periphery of the swing disk 210. When the abutment platform 221 abuts against the capture boss 211, the push rod 220 swings around the hinge point to push the drive rod 130. Each time the abutment platform 221 of the push rod 220 slides along the periphery of the swing disk 210 to the top of the capture boss 211, the push rod 220 pushes the drive rod 130 forward, thereby causing the drive rod 130 to swing the capture arm 120. The pushing assembly is mainly used to periodically push the drive rod 130 and the capture arm 120 to work.

[0037] The motor drive assembly includes an output shaft 310, a first transmission gear 320, and a second transmission gear 330. The first and second transmission gears 320 and 330 are keyed to the output shaft 310. The first transmission gear 320 is driven by a push assembly, and the second transmission gear 330 is driven by a capture assembly. Specifically, the output shaft 310 simultaneously drives the first and second transmission gears 320 and 330, causing the capture assembly and push assembly to work synchronously. Driven by the second transmission gear 330, the capture assembly rotates. The cylinder 110, drive rod 130, and capture arm 120 rotate continuously, causing the capture part 121 to capture the needle and drive the yarn to rotate. Driven by the first transmission gear 320, the push assembly periodically pushes the capture arm 120 out of the swing arm groove 111 to capture the needle. The needle capture mechanism of this embodiment achieves periodic capture action through a mechanical structure, resulting in a more stable working rhythm, effectively ensuring the working stability of the flat knitting machine, and improving equipment production efficiency and quality.

[0038] In some embodiments of this utility model, such as Figure 1 and Figure 2As shown, the cylinder 110 has through connecting posts 112 at both ends. The connecting posts 112 are rotatably connected to the bearing seats of the frame. The drive rod 130 extends into the cylinder 110, with one end sleeved with the connecting post 112, and the other end of the drive rod 130 extends through the connecting post 112 to the push rod 220. Specifically, the bearing seats are fixedly mounted on the frame, and the cylinder 110 is connected to the bearing seats through the connections at both ends. The cylinder 110 rotates around the bearing seats. The drive rod 130 is sleeved with the inner ring of the connecting post 112 and rotates synchronously with the cylinder 110, thereby keeping the capture arm 120 of the drive rod 130 and the swing arm groove 111 of the cylinder 110 relatively stationary.

[0039] Furthermore, such as Figures 1-3 As shown, a drive boss 131 is provided at one end of the drive rod 130 near the push rod 220, and the drive boss 131 abuts against the end of the push rod 220. Specifically, the drive boss 131 can increase the contact area between the end of the drive rod 130 and the end of the push rod 220, ensuring that the push rod 220 can push the drive rod 130 every time, thereby improving the structural fault tolerance rate.

[0040] In some embodiments of this utility model, such as Figures 1-3 As shown, the capture assembly includes a third transmission gear 140, which is sleeved with the connecting post 112 and meshes with the second transmission gear 330 for transmission. Specifically, the third transmission gear 140 is sleeved with the outer ring of the connecting post 112, while the inner ring of the connecting post 112 is sleeved with the drive rod 130. In the initial state, part of the capture section 121 of the capture arm 120 is located in the swing arm groove 111, and the rotation of the cylinder 110 will also drive the capture section 121 to rotate. The three can rotate synchronously, and the third transmission gear 140 meshes with the second transmission gear 330 for transmission, thereby transmitting the power of the output shaft 310 to the capture assembly.

[0041] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the capture part 121 is provided with a racetrack-shaped through hole 121a. The capture arm 120 rotates around the hinge to allow the racetrack-shaped through hole 121a to extend from the swing arm groove 111 to the outer wall end face of the cylinder 110. Specifically, whenever the drive rod 130 pushes forward, the capture arm 120 swings around the hinge, causing the capture part 121 in the swing arm groove 111 to extend out of the outer wall of the cylinder 110.

[0042] In some embodiments of this utility model, a return spring (not shown in the drawings) is sleeved on the drive rod 130. The return spring is located between the capture arm 120 and the inner wall of the cylinder 110. When the drive rod 130 pushes the capture arm 120 to swing, the return spring resets the capture arm 120. Specifically, one end of the return spring abuts against the inner wall of the cylinder 110, and the other end abuts against the capture arm 120. When the drive rod 130 pushes, the end of the capture arm 120 squeezes the return spring, at which time the elastic potential energy of the return spring increases. When the pushing force of the drive rod 130 disappears, the elastic potential energy of the return spring is released, pushing the drive rod 130 to reset, thereby causing the capture part 121 to retract into the cylinder 110.

[0043] In some embodiments of this utility model, such as Figures 1-3 As shown, the driving component includes a fourth transmission gear 230, the output shaft 310 of the swing disk 210 is keyed to the fourth transmission gear 230, and the fourth transmission gear 230 meshes with the first transmission gear 320 for transmission.

[0044] Furthermore, an inclined guide platform 212 is provided between the top of the capturing boss 211 and the end face of the swing disk 210, and the abutment platform 221 slides along the guide platform 212 to the top of the capturing boss 211. This allows the abutment platform 221 to smoothly slide from the guide platform 212 to the top of the capturing boss 211 and then from the top of the capturing boss 211 along the guide platform 212 to the peripheral end face of the swing disk 210. The abutment platform 221 is located within the rotation range of the capturing boss 211, and the rotation of the swing disk 210 drives the push rod 220 to periodically push the drive rod 130.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A needle-catching mechanism, mounted on the frame of a flat knitting machine; characterized in that, include: A capture assembly, mounted on the frame, includes a cylinder, a capture arm, and a drive rod. The middle part of the capture arm is hinged to the inner wall of the cylinder. The end of the capture arm away from the inner wall of the cylinder is rotatably connected to the drive rod. A capture part is provided at the end of the capture arm near the inner wall of the cylinder. A swing arm groove is provided in the area of ​​the cylinder corresponding to the capture part. The drive rod drives the capture arm to rotate around the hinge and causes the capture part to extend out of the swing arm groove. The pushing assembly includes a swing disk and a push rod. One end of the push rod is hinged to the frame, and the other end abuts against the end of the drive rod. The middle part of the push rod extends toward the swing disk to form an abutment platform. A capture protrusion is provided around the periphery of the swing disk. When the abutment platform abuts against the capture protrusion, the push rod swings around the hinge point to push the drive rod. The motor drive assembly includes an output shaft, a first transmission gear, and a second transmission gear. The first transmission gear and the second transmission gear are keyed to the output shaft. The first transmission gear is driven to the push assembly, and the second transmission gear is driven to the capture assembly.

2. The needle-catching mechanism according to claim 1, characterized in that, The cylinder has through connecting columns at both ends. The connecting columns are rotatably connected to the bearing seats of the frame. The drive rod extends into the cylinder and one end is sleeved with the connecting column. The other end of the drive rod passes through the connecting column and extends to the push rod.

3. The needle-catching mechanism according to claim 2, characterized in that, The drive rod has a drive boss at one end near the push rod, and the drive boss abuts against the end of the push rod.

4. The needle-catching mechanism according to claim 3, characterized in that, The capture component includes a third transmission tooth, which is sleeved with the connecting post and meshes with the second transmission tooth for transmission.

5. The needle-catching mechanism according to claim 4, characterized in that, The capture section is provided with a racetrack-shaped through hole, and the capture arm rotates around the hinge to allow the racetrack-shaped through hole to extend from the swing arm groove to the outer wall end face of the cylinder.

6. The needle-catching mechanism according to claim 5, characterized in that, The drive rod is fitted with a return spring, which is located between the capture arm and the inner wall of the cylinder. When the drive rod pushes the capture arm to swing, the return spring resets the capture arm.

7. The needle-catching mechanism according to claim 1, characterized in that, The pushing component includes a fourth transmission tooth, the output shaft of the swing disk is keyed to the fourth transmission tooth, and the fourth transmission tooth meshes with the first transmission tooth for transmission.

8. The needle-catching mechanism according to claim 7, characterized in that, An inclined guide platform is provided between the top of the capturing boss and the end face of the swing disk, and the abutment platform slides along the guide platform to the top of the capturing boss.

9. The needle-catching mechanism according to claim 8, characterized in that, The abutment is located within the rotation range of the capturing boss, and the rotation of the swing disk is used to drive the push rod to periodically push the drive rod.

10. A flat knitting machine, characterized in that, Includes the needle-catching mechanism as described in any one of claims 1 to 9.

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