Yarn supply mechanism for circular knitting machine

Abstract

The utility model discloses a yarn supply mechanism for a circular knitting machine, which comprises a bottom plate, a rotatable main shaft is mounted on the bottom plate, a support frame is fixedly mounted at the top end of the main shaft, the periphery of the support frame extends outwards and is provided with a plurality of branch plates at equal intervals, and the tail ends of the branch plates are respectively and correspondingly connected with yarn supply plates. A supporting adjusting assembly is arranged between the branch plate and the yarn supply plate, and a limiting plate perpendicular to the end face of the yarn supply plate is installed at the tail end of the yarn supply plate. The supporting and adjusting assembly is arranged between the branch plate and the yarn supply plate and used for dynamically adjusting the angle of the yarn supply plate, optimizing the yarn traction path and reducing tension fluctuation of yarn during yarn supply, so that the yarn supply quality is improved, the finished product quality of fabric is improved, and the production efficiency is improved. The yarn supply plate and the branch plate are stably supported through the supporting and adjusting assembly, shaking of the yarn supply plate and the yarn barrel due to centrifugal force during high-speed rotation can be avoided, and the yarn supply stability is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of yarn supply equipment, in particular to a yarn supply mechanism for a circular knitting machine. BACKGROUND

[0002] The circular knitting machine is a kind of circular knitting equipment widely used in the textile industry, and its core function is to produce seamless or continuous knitted fabric through simultaneous circular knitting of multiple knitting needles. In the knitting production process of the circular knitting machine, the yarn supply mechanism is a key component, which mainly functions to transport yarn from the yarn drum to the knitting area, ensuring stable tension and path of the yarn during traction, feeding and knitting.

[0003] The existing yarn supply mechanism of the circular knitting machine usually adopts a fixed yarn supply structure, and the installation position of the yarn drum is fixed, which results in a longer yarn traction path when the yarn supply mechanism rotates to some positions during circular knitting. The yarn path cannot be dynamically adjusted according to the knitting requirements, and the yarn traction angle cannot be optimized. Especially during high-speed knitting, the yarn needs more traction force, which can cause the yarn to relax and fail to be pulled or to be stretched too much due to tension, ultimately affecting the quality of the fabric. In addition, the traditional yarn supply mechanism cannot adapt to the quick replacement demand of different specifications of yarn drums, and the yarn supply device is easily affected by centrifugal force when rotating to supply yarn, causing the yarn drum to shake and affecting the stability of yarn supply.

[0004] Therefore, we propose a yarn supply mechanism for a circular knitting machine to solve the existing problems. CONTENT OF THE INVENTION

[0005] The purpose of the present application is to provide a yarn supply mechanism for a circular knitting machine to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a yarn supply mechanism for a circular knitting machine, comprising a bottom plate, a rotatable main shaft installed on the bottom plate, a support frame fixedly installed at the top end of the main shaft, a plurality of branch plates equally spaced outwardly extending from the outer periphery of the support frame, a yarn supply plate correspondingly connected to the end of each branch plate, a support adjusting assembly provided between the branch plate and the yarn supply plate, a limiting plate vertically installed at the end of the yarn supply plate and perpendicular to the end face of the yarn supply plate, and a yarn drum fixing assembly rotatably installed on the limiting plate.

[0007] Preferably, the branch plate and the yarn supply plate are movably hinged, the support adjusting assembly comprises a lead screw arranged along the length direction of the branch plate and a servo motor for driving the lead screw, the servo motor is installed at the end of the lead screw away from the connection between the branch plate and the yarn supply plate, a sliding block is slidably connected to the lead screw, support rods are hingedly connected to both ends of the sliding block, and the other ends of the support rods are movably hingedly connected to the yarn supply plate.

[0008] Preferably, a center shaft extending perpendicularly to the end face of the limiting plate is arranged at the center of the end face of the limiting plate, and the yarn drum fixing assembly is sleeved on the center shaft and rotationally connected with the center shaft.

[0009] Preferably, the yarn drum fixing assembly comprises a rotating shaft, the rotating shaft is sleeved on the outer periphery of the center shaft and rotationally connected with the center shaft, a bottom plate is arranged on the outer periphery of the bottom end of the rotating shaft, and a plurality of sets of connecting assemblies are equidistantly arranged on the outer periphery of the rotating shaft.

[0010] Preferably, the connecting assembly comprises a connecting rod movably arranged at both ends of the axis of the rotating shaft and movably hinged with the outer periphery of the rotating shaft, the connecting rod is symmetrically arranged at both ends, and a guide sliding seat is connected between the opposite ends of the connecting rod, and a sliding groove slidably connected with the connecting rod is arranged on the end face of the bottom end of the rotating shaft.

[0011] Preferably, a detachable soft rubber pad is arranged on the end face of the guide sliding seat away from the rotating shaft.

[0012] Preferably, an elastic member is arranged between the guide sliding seat and the rotating shaft or between the connecting rod and the rotating shaft.

[0013] Preferably, a detachable porcelain eye is arranged on the limiting plate, and a guide hole penetrating through the porcelain eye is arranged at the axis center of the porcelain eye.

[0014] Preferably, a first synchronous wheel is fixedly arranged at the bottom of the main shaft, a driving motor is fixedly arranged at the bottom of the bottom plate, a second synchronous wheel is drivingly connected with the output end of the driving motor through the bottom plate, and a synchronous belt is arranged between the first synchronous wheel and the second synchronous wheel.

[0015] Compared with the prior art, the yarn feeding mechanism for the circular knitting machine has the advantages that: the supporting adjusting assembly is arranged between the branch plate and the yarn feeding plate to dynamically adjust the angle of the yarn feeding plate, the yarn pulling path is optimized, the tension fluctuation of the yarn during yarn feeding is reduced, the yarn feeding quality is improved, the product quality of the fabric is improved, the yarn feeding plate forms stable support between the branch plate through the supporting adjusting assembly, the shaking of the yarn feeding plate and the yarn drum caused by centrifugal force during high-speed rotation is avoided, and the yarn feeding stability is ensured.

[0016] 2. The yarn feeding mechanism for the circular knitting machine has the advantages that: the yarn drum fixing assembly is arranged on the yarn feeding plate, the yarn drum of various specifications can be quickly centered and fixed, the yarn drum can be quickly replaced, the production efficiency is improved, the overall structure is compact, the yarn feeding can be performed by driving the synchronous movement of the multiple stations and the knitting needles of the circular knitting machine, the ring knitting requirement of the circular knitting machine is met, and the efficient and stable yarn feeding requirement can be met. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1The three-dimensional structure schematic view of the utility model is shown in the figure.

[0018] Figure 2 The overhead structure schematic view of the utility model is shown in the figure.

[0019] Figure 3 The side structure schematic view of the utility model is shown in the figure.

[0020] Figure 4 The yarn feeding plate and the yarn drum fixing assembly mounting structure schematic view of the utility model is shown in the figure.

[0021] Figure 5 The yarn drum fixing assembly three-dimensional structure schematic view of the utility model is shown in the figure.

[0022] In the figure: 1, support frame; 11, branch plate; 2, yarn feeding plate; 21, limiting plate; 22, central shaft; 3, porcelain eye; 4, yarn drum fixing assembly; 41, rotating shaft; 42, bottom plate; 43, connecting rod; 44, guide sliding seat; 45, soft rubber pad; 46, elastic piece; 5, support adjusting assembly; 51, servo motor; 52, screw rod; 53, support rod; 6, main shaft; 61, first synchronous wheel; 7, base; 8, driving motor; 81, second synchronous wheel; 82, synchronous belt. DETAILED DESCRIPTION

[0023] In order to make the person skilled in the art better understand the present application scheme, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0024] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0025] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0026] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0027] In addition, the term "multiple" should mean two or more.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments. Example

[0029] like Figures 1 to 5 As shown, a yarn feeding mechanism for a circular knitting machine includes a base 7, a rotatable main shaft 6 mounted on the base 7, a support frame 1 fixedly mounted on the top of the main shaft 6, and several branch plates 11 extending outward from the outer periphery of the support frame 1 at equal intervals. Each branch plate 11 has a corresponding yarn feeding plate 2 connected to its end. A support adjustment assembly 5 is provided between the branch plates 11 and the yarn feeding plates 2. A limiting plate 21 perpendicular to the end face of the yarn feeding plate 2 is mounted on the end of the yarn feeding plate 2. A yarn bobbin fixing assembly 4 is rotatably mounted on the limiting plate 21. In use, the yarn feeding mechanism is supported by the base 7 and rotatably connected to the base 7. The support frame 1 is fixed to the top of the main shaft 6, and the branch plates 11 are evenly distributed. Around the outer periphery of the support frame 1, the end of the branch plate 11 is connected to the yarn supply plate 2. The end of the yarn supply plate 2 is equipped with a limiting plate 21. The yarn bobbin fixing assembly 4 is rotatably mounted on the limiting plate 21 for fixing the yarn bobbin and supplying yarn. The tilt angle between the yarn supply plate 2 and the branch plate 11 is adjusted by the support adjustment assembly 5 to adjust the yarn supply path between the yarn bobbin and the traction structure of the circular knitting machine, so that the yarn movement path is minimized and the yarn is not stretched and deformed due to the need to increase the traction force during the traction process. At the same time, the support adjustment assembly 5 is used to support the yarn supply plate 2 so that the yarn supply plate 2 is not shaken by centrifugal force during the rotation of the main shaft 6, which would interfere with the yarn supply.

[0030] Further, the branch plate 11 is movably connected with the yarn feeding plate 2, the support adjusting assembly 5 comprises a lead screw 52 arranged along the length direction of the branch plate 11 and a servo motor 51 for driving the lead screw 52, the servo motor 51 is installed at the end of the lead screw 52 away from the connection between the branch plate 11 and the yarn feeding plate 2, a sliding block is slidably connected on the lead screw 52, and support rods 53 are movably connected at both ends of the sliding block, the other ends of the support rods 53 are movably connected with the yarn feeding plate 2, in use, the branch plate 11 is movably connected with the yarn feeding plate 2, so that the yarn feeding plate 2 can rotate freely around the hinge shaft between the branch plate 11 and the yarn feeding plate 2, the servo motor 51 drives the lead screw 52 to rotate, the lead screw 52 drives the sliding block to slide along the lead screw 52, the support rods 53 are movably connected at both ends of the sliding block, and the other ends of the support rods 53 are movably connected with the yarn feeding plate 2, so that the sliding block drives the support rods 53 to push or pull the yarn feeding plate 2 to rotate around the hinge end, the angle of the yarn feeding plate 2 is adjusted, and the yarn is in a straightened state when being pulled by the pulling mechanism installed on the circular knitting machine, at this time, the servo motor 51 stops driving, so that the sliding block stays on the lead screw 52, and the support rods 53 support the yarn feeding plate 2.

[0031] Further, the center axis 22 extending perpendicularly to the end face of the limiting plate 21 is arranged at the center of the end face of the limiting plate 21, the yarn drum fixing assembly 4 is sleeved on the center axis 22 and is rotatably connected with the center axis 22, in use, the yarn drum fixing assembly 4 is used for fixing the yarn drum and rotating the yarn drum to release the yarn wound on the yarn drum during the yarn feeding process.

[0032] Further, the yarn drum fixing assembly 4 comprises a rotating shaft 41, the rotating shaft 41 is sleeved on the outer periphery of the center axis 22 and is rotatably connected with the center axis 22, a bottom plate 42 is installed on the outer periphery of the bottom end of the rotating shaft 41, and a plurality of connecting assemblies are equidistantly arranged on the outer periphery of the rotating shaft 41, in use, the bottom plate 42 is installed on the bottom end of the rotating shaft 41, which is used for limiting and positioning the yarn drum when the yarn drum is installed, and the plurality of connecting assemblies are equidistantly arranged on the outer periphery of the rotating shaft 41, which is used for fixing the yarn drum.

[0033] Further, the connecting assembly comprises a connecting rod 43 movably arranged at both ends of the axis line of the rotating shaft 41 and movably connected with the outer periphery of the rotating shaft 41, the two ends of the connecting rod 43 are symmetrically arranged, and a guide sliding seat 44 is connected between the opposite ends of the two ends of the connecting rod 43, a sliding groove slidably connected with the two ends of the connecting rod 43 is arranged on the bottom end face of the guide sliding seat 44 close to the rotating shaft 41, in use, the plurality of connecting assemblies are equidistantly arranged on the outer periphery of the rotating shaft 41, which is used for centering and fixing the yarn drum, and the connecting rod 43 and the guide sliding seat 44 realize the fixing and releasing of the yarn drum, which can be adapted to install yarn drums with different diameters.

[0034] Further, a detachable soft rubber pad 45 is installed on the end face of the guide sliding seat 44 away from the rotating shaft 41, in use, the connecting device and the inner wall of the yarn drum are in soft contact through the soft rubber pad 45, which has a friction anti-skid effect, prevents the yarn drum from sliding axially, and separates from the yarn drum fixing assembly 4.

[0035] Further, the elastic member 46 is arranged between the guide sliding seat 44 and the rotating shaft 41 or between the connecting rod 43 and the rotating shaft 41. In use, the guide sliding seat 44 is pushed by the elastic member 46 to drive the connecting rod 43 or the connecting rod 43 is pushed by the elastic member 46 to drive the guide sliding seat 44 to move along the radial direction of the rotating shaft 41 and away from one end of the rotating shaft 41. When the yarn cylinder is installed, the elastic member 46 is compressed, so that the yarn cylinder can be smoothly sleeved on the outer periphery of the rotating shaft 41. After the yarn cylinder is installed in place, the elastic member 46 pushes the guide sliding seat 44 or the connecting rod 43 to move, so that the soft rubber pad 45 installed on the guide sliding seat 44 abuts against the inner wall of the yarn cylinder. A plurality of connecting devices jointly act on the inner wall of the yarn cylinder, so that the yarn cylinder and the rotating shaft 41 are coaxial and rotate synchronously around the central shaft 22 to supply yarn.

[0036] Further, the limiting plate 21 is detachably provided with a porcelain eye 3. The axis center of the porcelain eye 3 is provided with a guide hole penetrating through the porcelain eye 3. In use, the guide hole is used to guide the yarn to pass through and reduce the friction between the yarn and the equipment, thereby protecting the yarn.

[0037] Further, the bottom of the main shaft 6 is fixedly provided with a first synchronous wheel 61. The bottom plate 42 is fixedly provided with a driving motor 8. The output end of the driving motor 8 is provided with a second synchronous wheel 81 penetrating through the bottom plate 42. The first synchronous wheel 61 and the second synchronous wheel 81 are provided with a synchronous belt 82. The driving motor 8 drives the main shaft 6 to rotate through the synchronous belt 82. The support frame 1 drives a plurality of branch plates 11 and the yarn supplying plates 2 connected with the branch plates 11 to rotate. When the circular machine performs ring weaving, the yarn is supplied synchronously.

[0038] The utility model discloses a working principle is: the utility model has the base 7, the freely rotating main shaft 6 of installation can be installed on the base 7, the top of main shaft 6 is fixedly connected with a support frame 1, and the outer periphery of support frame 1 can extend outward and distribute several branch plates 11 at equal distance, and the end of each branch plate 11 is connected with the yarn plate 2 for installing the yarn drum, and the support adjusting assembly 5 is still arranged between branch plate 11 and yarn plate 2 for adjusting the inclination angle of yarn plate 2 and supporting yarn plate 2, and branch plate 11 and yarn plate 2 are hingedly connected, and the support adjusting assembly includes the screw rod 52 of setting in the length direction bottom of branch plate 11 and a servo motor 51, and the servo motor 51 is installed in one end of screw rod 52, and the rotation of screw rod 52 is driven through, and then the sliding block is driven along screw rod 52 through screw rod 52, and the both ends of sliding block are hingedly connected with support rod 53, and the other end of support rod 53 is hingedly connected with yarn plate 2, so when the sliding block is sliding on screw rod 52, yarn plate 2 can be rotated around the hinged shaft of yarn plate 2 and branch plate 11 through support rod 53 pushing or pulling yarn plate 2, thereby realizing the accurate adjustment of the angle of yarn plate 2, after adjusting, the rotation of screw rod 52 is restrained through servo motor 51, thereby fixing the sliding block on screw rod 52, and the sliding block plays the supporting role to yarn plate 2 through support rod 53, avoids yarn plate 2 shaking in the yarn feeding process, and the end of yarn plate 2 is equipped with the limiting plate 21, and the yarn drum fixing assembly 4 is rotatably installed on limiting plate 21, is used for fixing the yarn drum, makes the yarn in the yarn feeding process can be smoothly pulled, and the yarn drum fixing assembly 4 mainly includes a rotating shaft 41 that is sleeved on the central shaft 22 of limiting plate 21, makes the yarn drum fixing mechanism can rotate freely around rotating shaft 41, and the bottom of rotating shaft 41 is installed with a bottom plate 42, is used for positioning and limiting the yarn drum when installing the yarn drum, and the outer periphery of rotating shaft 41 is set with multiple sets of connecting assemblies at equal distance, and the inner wall of yarn drum is abutted between connecting assembly and yarn drum through the elastic force of elastic member 46, thereby fixing the yarn drum, and the end surface of guide sliding seat 44 is also installed with detachable soft rubber pad 45, to increase the friction force with the inner wall of yarn drum, prevent the yarn drum from slipping in the rotating process, and the limiting plate 21 is installed with a detachable porcelain eye 3, and the axis center of porcelain eye 3 is equipped with a through guide hole, can effectively guide the yarn to pass through, reduces the friction between yarn and equipment simultaneously, thereby protecting the yarn from being damaged, in the yarn feeding, in order to realize the synchronous rotation of yarn feeding mechanism and the needle of circular knitting machine and feeds yarn, the bottom of main shaft 6 is also fixedly installed with a first synchronous wheel 61, and the bottom of bottom plate 42 is fixed with a driving motor 8, and the output end of driving motor 8 passes through bottom plate 42 and is driven to be connected with a second synchronous wheel 81, and the first synchronous wheel 61 and the second synchronous wheel 81 are connected through a synchronous belt 82, and driving motor 8 starts, and is driven to rotate main shaft 6 through synchronous belt 82, and then drives several branch plates 11 and the yarn plate 2 connected with them to rotate synchronously through support frame 1, when the needle of circular knitting machine is looped around circular knitting machine and is looped, the yarn feeding mechanism can realize synchronous rotation,Continuous yarn feeding operation is performed.

[0039] The above specific embodiments are only preferred embodiments of the present application, and based on the technical solutions of the present application and the related inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations on the above specific embodiments.

Claims

1. A yarn feeding mechanism for a circular knitting machine, comprising a base (7) on which a rotatable main shaft (6) is mounted, characterized in that: The top end of the main shaft (6) is fixedly provided with a support frame (1), the outer periphery of the support frame (1) is provided with a plurality of branch plates (11) extending outward at equal intervals, the distal end of each branch plate (11) is correspondingly connected with a yarn feeding plate (2), a support adjusting assembly (5) is arranged between the branch plate (11) and the yarn feeding plate (2), the distal end of the yarn feeding plate (2) is provided with a limiting plate (21) perpendicular to the end face of the yarn feeding plate (2), and the limiting plate (21) is rotatably provided with a bobbin fixing assembly (4).

2. A yarn supply mechanism for a knitting machine as claimed in claim 1, characterized in that: The branch plate (11) and the yarn feeding plate (2) are movably connected, the support adjusting assembly (5) comprises a lead screw (52) arranged along the length direction of the branch plate (11) and a servo motor (51) for driving the lead screw (52), the servo motor (51) is arranged at the end of the lead screw (52) away from the connection between the branch plate (11) and the yarn feeding plate (2), a sliding block is slidably connected to the lead screw (52), and support rods (53) are movably connected to the two ends of the sliding block.

3. A yarn supply mechanism for a knitting machine as defined in claim 1, characterized in that: The end face of the limiting plate (21) is provided with a central shaft (22) extending perpendicularly to the end face of the limiting plate (21), and the bobbin fixing assembly (4) is sleeved on the central shaft (22) and rotatably connected with the central shaft (22).

4. A yarn supply mechanism for a knitting machine as claimed in claim 3, characterized in that: The bobbin fixing assembly (4) comprises a rotating shaft (41), the rotating shaft (41) is sleeved on the outer periphery of the central shaft (22) and rotatably connected with the central shaft (22), a bottom plate (42) is arranged on the outer periphery of one end of the bottom of the rotating shaft (41), and a plurality of groups of connecting assemblies are arranged on the outer periphery of the rotating shaft (41) at equal intervals.

5. A yarn supply mechanism for a knitting machine as claimed in claim 4, characterized in that: The connecting assembly comprises a connecting rod (43) movably arranged at the two ends of the axis of the rotating shaft (41) and movably connected with the outer periphery of the rotating shaft (41), the two ends of the connecting rod (43) are symmetrically arranged, and a guide sliding seat (44) is connected between the opposite ends of the two ends of the connecting rod (43), and the guide sliding seat (44) is provided with a sliding groove slidably connected with the two ends of the connecting rod (43) close to the bottom end face of the rotating shaft (41).

6. A yarn supply mechanism for a knitting machine as claimed in claim 5, characterized in that: A detachable soft rubber pad (45) is arranged on the end face of the guide sliding seat (44) away from the rotating shaft (41).

7. A yarn supply mechanism for a knitting machine as claimed in claim 5, characterized in that: Elastic members (46) are arranged between the guide sliding seat (44) and the rotating shaft (41) or between the connecting rod (43) and the rotating shaft (41).

8. A yarn supply mechanism for a knitting machine as claimed in claim 3, characterized in that: A detachable porcelain eye (3) is arranged on the limiting plate (21), and a guide hole penetrating through the porcelain eye (3) is arranged at the axis center of the porcelain eye (3).

9. A yarn supply mechanism for a knitting machine as defined in claim 1, characterized in that: The bottom of the main shaft (6) is fixedly provided with a first synchronous wheel (61), the bottom of the base (7) is fixedly provided with a driving motor (8), the output end of the driving motor (8) is drivingly connected with a second synchronous wheel (81) penetrating through the base (7), and a synchronous belt (82) is arranged between the first synchronous wheel (61) and the second synchronous wheel (81).

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