Ring driving mechanism of high-speed computerized embroidery machine

Abstract

The utility model discloses a looping transmission mechanism of a high-speed computerized embroidery machine, which belongs to the technical field of computerized embroidery machines and comprises a main shaft connecting component and a looping connecting component, the main shaft connecting component is in transmission connection with a main shaft, and the looping connecting component is in transmission connection with an annular shuttle shaft. The eccentric part is used for pushing the joint bearing to drive the joint shaft to deflect, the joint shaft drives the V-shaped connecting rod to push the push plate to move back and forth along a straight line, the purpose of driving the ring shuttle shaft to move back and forth along the axial direction is achieved, all components can slide relatively smoothly, friction resistance and transmission efficiency are high, and the mechanism is simple in overall structure and convenient to operate. The space can be effectively utilized, the maintenance cost is low, the noise is low, the service life is long and the like, and the production requirement of accurate power transmission during high-speed operation of the embroidery machine can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of computer embroidery machines, in particular to a looping transmission mechanism of a high-speed computer embroidery machine. Background Art

[0002] The looping device of the shuttle is an important power device on the computer embroidery machine. It is mainly used to drive the hook needle to move back and forth to embroider the embroidery thread on the embroidery cloth, and to drive the shuttle shaft to drive the shuttle to operate so as to achieve the embroidery thread color change. In embroidery production, the embroidery thread color change movement and the hook needle movement need to be precisely coordinated in order to achieve high-quality continuous operation of the embroidery machine. At present, there are generally two designs for the shuttle looping device on the embroidery machine: one is that the two movements run independently, and each movement has its own independent driving device and transmission device. The movement transmission is precise and the distortion rate is small, which can meet the high-frequency switching / color-changing movements and has high production efficiency. However, the disadvantage is that it requires a larger assembly and operation space, and the application of small embroidery machines is limited. The two movements are prone to being out of sync, and at least two high-performance servo motors need to be installed on the device, which is costly; the other is to establish a transmission connection between the shuttle color-changing mechanism and the hook spindle, which only requires one motor. Generally, high-precision gear transmission is used to reduce the transmission distortion rate of high-speed operation, which can better solve the problem of being out of sync, and can use the assembly space in a limited way, occupying a small area and having a low cost. However, this high-precision gear is prone to transmission errors and noise after running at high speed for a period of time, and its maintenance cost is high, and its service life is short. In addition, the load of the motor increases, the temperature is high during operation, and the output is prone to unstable problems. Utility Model Content

[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides a loop transmission mechanism for a high-speed computer embroidery machine, in which the components can slide relatively smoothly, have low friction resistance, have high transmission efficiency, have a simple overall structure, and can effectively utilize space. It has the advantages of low transmission and maintenance cost, low noise and long service life, and can meet the production needs of precise power transmission when the embroidery machine is running at high speed.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is as follows:

[0005] A looping transmission mechanism of a high-speed computer embroidery machine is connected to the main shaft of the computer embroidery machine. The looping transmission mechanism includes a main shaft connecting component and a looping connecting component. The main shaft connecting component is connected to the main shaft, and the looping connecting component is connected to the shuttle shaft on the looping mechanism; wherein:

[0006] The main shaft is in driving connection with the driving device and can rotate under the driving of the driving device;

[0007] The main shaft connection assembly includes a connecting shaft, which is connected to the main shaft through a first synchronous belt and can rotate under the drive of the main shaft. An eccentric piece is arranged on the connecting shaft, and the eccentric piece is connected to a spherical bearing through a transmission. The spherical bearing is provided with a joint shaft. The connecting shaft can drive the spherical bearing to deflect through the eccentric piece, and drive the joint shaft and the spherical bearing to move synchronously.

[0008] The looping connection assembly includes a positioning shaft and a V-shaped connecting rod hinged thereon, one end of the V-shaped connecting rod is hinged on the joint shaft, and the other end extends to the side of the ring shuttle shaft, and the ring shuttle shaft is provided with a push plate on both sides of the V-shaped connecting rod, and the two push plates can be pushed by the V-shaped connecting rod to move back and forth along the axial direction of the ring shuttle shaft to drive the ring shuttle shaft to move back and forth along the axial direction synchronously; a reversing member is provided on the ring shuttle shaft, and the reversing member is connected to the transmission shaft in transmission connection, and the transmission shaft is connected to the ring shuttle teeth on the looping mechanism and can drive its forward and reverse rotation to realize the looping of the ring shuttle.

[0009] As a further elaboration of the above technical solution:

[0010] In the above technical solution, the main shaft includes an upper shaft and a lower shaft, the upper shaft is transmission connected to the driving device, and the lower shaft is transmission connected to the upper shaft through a second synchronous belt, the driving device can drive the upper shaft to rotate and drive the lower shaft to rotate synchronously; the first synchronous belt is provided between the lower shaft and the connecting shaft.

[0011] In the above technical solution, the upper shaft and the lower shaft are both mounted on the spindle housing and can rotate relative to it, and a second tensioning roller is slidably mounted on the spindle housing beside the second synchronous belt.

[0012] In the above technical solution, the connecting shaft and the lower shaft are both mounted on the connecting box and can rotate relative to it. A first tensioning roller is also slidably mounted on the side of the first synchronous belt in the connecting box.

[0013] In the above technical solution, one end of the joint bearing is a spherical structure, the joint shaft passes through its center and can rotate relative to it, and both ends of the joint shaft extend to the outside of the joint bearing; the other end of the joint bearing is a rod structure arranged perpendicular to the joint shaft, which can be detachably fixed on the eccentric piece.

[0014] In the above technical solution, the eccentric member includes an eccentric transmission part and a connecting part which are slidably connected, the connecting part is threadedly connected to the spherical bearing, and the eccentric transmission part is drivingly connected to the connecting shaft.

[0015] In the above technical solution, both ends of the V-shaped connecting rod are U-shaped ends, one of the U-shaped ends is hinged to the joint shaft, and the other U-shaped end extends to the radial sides of the ring shuttle shaft and is located between the two push plates.

[0016] In the above technical solution, the reversing member includes two meshingly connected helical gears, one of which is arranged on the ring shuttle shaft, and the other of which is arranged on the transmission shaft.

[0017] In the above technical solution, the connecting shaft, the positioning shaft and the loop shuttle shaft are all mounted on the loop box through a plurality of bearings.

[0018] In the above technical solution, the connecting shaft is mounted on the loop box through a plurality of self-aligning ball bearings.

[0019] Compared with the prior art, the beneficial effects of the utility model are: by using an eccentric piece to push the joint bearing to drive the joint shaft to deflect, and by the joint shaft driving the V-shaped connecting rod to push the push plate to move back and forth in a straight line, the purpose of driving the shuttle shaft to move back and forth in the axial direction is achieved, the various components can slide smoothly relative to each other, the friction resistance is low, the transmission efficiency is high, the overall structure of the mechanism is simple, and the space can be effectively utilized. It has the advantages of low maintenance cost, low noise and long service life, and can meet the production requirements of accurate power transmission when the embroidery machine is running at high speed; by arranging a self-aligning ball bearing on the connecting shaft, the connecting shaft can be always adjusted to the set axis during operation to ensure that the deflection angles of the joint bearing, the transmission shaft and the V-shaped connecting rod and the translational displacement of the push plate are all within the set range, ensuring transmission accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the utility model after removing the box body;

[0022] Figure 3 It is a front view structural schematic diagram of a main shaft connecting component and a loop connecting component in the utility model.

[0023] In the figure: 100, spindle housing; 200, connecting housing; 300, looping housing; 10, spindle; 11, upper shaft; 12, lower shaft; 13, second synchronous belt; 14, second tensioning roller; 20, driving device; 30, spindle connecting assembly; 31, connecting shaft; 32, first synchronous belt; 33, joint bearing; 34, joint shaft; 35, first tensioning roller; 36, eccentric member; 361, eccentric transmission part; 362, connecting part; 40, looping connecting assembly; 41, positioning shaft; 42, V-shaped connecting rod; 50, shuttle shaft; 51, push plate; 60, reversing member; 61, bevel gear; 70, transmission shaft; 80, bearing. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0025] The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and cannot be understood as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "several" and "multiple" mean two or more, unless otherwise clearly and specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In this application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features being in direct contact, or it can include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] like Figure 1-3As shown, a looping transmission mechanism of a high-speed computer embroidery machine is connected to the main shaft 10 of the computer embroidery machine. The looping transmission mechanism includes a main shaft connecting component 30 and a looping connecting component 40. The main shaft connecting component 30 is connected to the main shaft 10, and the looping connecting component 40 is connected to the shuttle shaft 50 on the looping mechanism; wherein:

[0027] The main shaft 10 is in transmission connection with the driving device 20 and can rotate under the driving thereof;

[0028] The main shaft connection assembly 30 includes a connection shaft 31, which is connected to the main shaft 10 through a first synchronous belt 32 and can rotate under the drive of the first synchronous belt 32. An eccentric piece 36 is arranged on the connection shaft 31, and the eccentric piece 36 is connected to a spherical bearing 33 through a transmission connection. The spherical bearing 33 is provided with a joint shaft 34. The connection shaft 31 can drive the spherical bearing 33 to swing through the eccentric piece 36, and drive the joint shaft 34 to move synchronously with the spherical bearing 33.

[0029] The loop connection assembly 40 includes a positioning shaft 41 and a V-shaped connecting rod 42 hinged thereon, one end of the V-shaped connecting rod 42 is hinged on the joint shaft 34, and the other end extends to the side of the ring shuttle shaft 50, and a push plate 51 is provided on both sides of the V-shaped connecting rod 42 on the ring shuttle shaft 50. The two push plates 51 can be pushed by the V-shaped connecting rod 42 to move back and forth along the axial direction of the ring shuttle shaft 50 to drive the ring shuttle shaft 50 to move back and forth along the axial direction synchronously; a reversing member 60 is provided on the ring shuttle shaft 50, and the reversing member 60 is connected to the transmission shaft 70 for transmission, and the transmission shaft 70 is connected to the ring shuttle teeth on the loop mechanism for transmission and can drive its forward and reverse rotation to realize the loop shuttle looping.

[0030] During operation, the driving device 20 drives the main shaft 10 to rotate, and the main shaft drives the connecting shaft 31 to rotate through the first synchronous belt 32, driving the eccentric member 36 thereon to rotate synchronously, driving the joint bearing 33 thereon to rise and fall and translate back and forth within a certain angle range, that is, to perform a reciprocating oscillation action, and the joint shaft 34 thereon pulls the V-shaped connecting rod 42 to rotate forward and reverse around the positioning shaft 41, and the other end of the V-shaped connecting rod 42 pushes the push plate 51 to drive the ring shuttle shaft 50 to translate back and forth along the axial direction, and drives the transmission shaft 70 to rotate back and forth through the reversing transmission of the reversing member 60.

[0031] The utility model drives the shuttle shaft 50 to move back and forth along the axial direction by using the eccentric member 36 to push the joint bearing 33 to drive the joint shaft 34 to swing, and drives the V-shaped connecting rod 42 through the joint shaft 34 to push the push plate 51 to move back and forth in a straight line, so as to achieve the purpose of driving the shuttle shaft 50 to move back and forth along the axial direction. The various components can slide relatively smoothly, with low friction resistance and high transmission efficiency. The overall structure of the mechanism is simple and space can be effectively utilized. It has the advantages of low maintenance cost, low noise and long service life, and can meet the production requirements of accurate power transmission when the embroidery machine is running at high speed.

[0032] In some embodiments of the utility model, the main shaft 10 includes an upper shaft 11 and a lower shaft 12. The upper shaft 11 is transmission connected to the driving device 20, and the lower shaft 12 is transmission connected to the upper shaft 11 through a second synchronous belt 13. The driving device 20 can drive the upper shaft 11 to rotate and drive the lower shaft 12 to rotate synchronously; a first synchronous belt 32 is provided between the lower shaft 12 and the connecting shaft 31.

[0033] In some embodiments of the present invention, the upper shaft 11 and the lower shaft 12 are both mounted on the spindle housing 100 and can rotate relative thereto. A second tensioning roller 14 is also slidably mounted beside the second synchronous belt 13 in the spindle housing 100 .

[0034] In some embodiments of the present invention, the connecting shaft 31 and the lower shaft 12 are both mounted on the connecting box 200 and can rotate relative thereto. A first tensioning roller 35 is also slidably mounted beside the first synchronous belt 32 in the connecting box 200 .

[0035] In some embodiments of the present invention, one end of the joint bearing 33 is a spherical structure, the joint shaft 34 passes through its center and can rotate relative to it, and both ends of the joint shaft 34 extend to the outside of the joint bearing 33; the other end of the joint bearing 33 is a rod structure arranged perpendicular to the joint shaft 34, which is detachably fixed on the eccentric member 36.

[0036] In some embodiments of the present invention, the eccentric member 36 includes an eccentric transmission part 361 and a connecting part 362 which are slidably connected. The connecting part 362 is threadedly connected to the spherical bearing 33 , and the eccentric transmission part 361 is drivingly connected to the connecting shaft 31 .

[0037] In some embodiments of the present invention, both ends of the V-shaped connecting rod 42 are U-shaped ends, one U-shaped end is hinged to the joint shaft 34, and the other U-shaped end extends to the radial sides of the ring shuttle shaft 50 and is located between the two push plates 51.

[0038] In some embodiments of the present invention, the reversing member 60 includes two meshingly connected bevel gears 61 , one bevel gear 61 is disposed on the ring shuttle shaft 50 , and the other bevel gear 61 is disposed on the transmission shaft 70 .

[0039] In this embodiment, the shuttle shaft 50 is vertically arranged to the transmission shaft 70, and the two bevel gears 61 are both annular sleeves with 45° bevel racks. The two annular sleeves are detachably fixed on the shuttle shaft 50 and the transmission shaft 70, respectively. The high-frequency axial linear reciprocating motion of the shuttle shaft 50 can be converted into a high-frequency positive and reverse driving force for the transmission shaft 70. The motion transmission is precise, the meshing resistance of the two bevel gears 61 is small, and it is not easy to have tooth jamming, which is convenient for maintenance and has a low production cost.

[0040] In some embodiments of the present invention, the connecting shaft 31, the positioning shaft 41 and the ring shuttle shaft 50 are all mounted on the loop box 300 through a plurality of bearings. In this embodiment, the connecting shaft 31 is mounted on the loop box through a plurality of self-aligning ball bearings 80.

[0041] It can be understood that the eccentric piece 36 is arranged at one end of the connecting shaft 31. When the connecting shaft 31 continuously drives the eccentric piece 36 to operate at a high speed, the eccentric piece 36 will also affect the position accuracy of the connecting shaft 31 itself relative to the loop box 300, thereby affecting the position accuracy of the joint bearing 33 and the joint shaft 34 thereon, and finally affecting the axial displacement accuracy of the ring shuttle shaft 50 and the rotation angle of the transmission shaft 70, resulting in abnormalities in the loop mechanism and the ring shuttle color changing mechanism installed thereon; the setting of the self-aligning ball bearing 80 can continuously adjust the axial direction of the connecting shaft 31 during operation and adjust it to the set axis, ensuring that the swing angles of the joint bearing 33, the transmission shaft 34 and the V-shaped connecting rod 42 and the translational displacement of the push plate 51 are all within the set range, thereby ensuring transmission accuracy.

[0042] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A looping transmission mechanism of a high-speed computer embroidery machine, which is connected to the main shaft of the computer embroidery machine, characterized in that The looping transmission mechanism includes a main shaft connecting assembly and a looping connecting assembly, the main shaft connecting assembly is connected to the main shaft in a driving manner, and the looping connecting assembly is connected to the shuttle shaft on the looping mechanism in a driving manner; wherein: The main shaft is in driving connection with the driving device and can rotate under the driving of the driving device; The main shaft connection assembly includes a connecting shaft, which is connected to the main shaft through a first synchronous belt and can rotate under the drive of the main shaft. An eccentric piece is arranged on the connecting shaft, and the eccentric piece is connected to a spherical bearing through a transmission. The spherical bearing is provided with a joint shaft. The connecting shaft can drive the spherical bearing to deflect through the eccentric piece, and drive the joint shaft and the spherical bearing to move synchronously. The looping connection assembly includes a positioning shaft and a V-shaped connecting rod hinged thereon, one end of the V-shaped connecting rod is hinged on the joint shaft, and the other end extends to the side of the ring shuttle shaft, and the ring shuttle shaft is provided with a push plate on both sides of the V-shaped connecting rod, and the two push plates can be pushed by the V-shaped connecting rod to move back and forth along the axial direction of the ring shuttle shaft to drive the ring shuttle shaft to move back and forth along the axial direction synchronously; a reversing member is provided on the ring shuttle shaft, and the reversing member is connected to the transmission shaft in transmission connection, and the transmission shaft is connected to the ring shuttle teeth on the looping mechanism and can drive its forward and reverse rotation to realize the looping of the ring shuttle.

2. The loop transmission mechanism of a high-speed computer embroidery machine according to claim 1, characterized in that: The main shaft includes an upper shaft and a lower shaft, the upper shaft is connected to the driving device, and the lower shaft is connected to the upper shaft through a second synchronous belt. The driving device can drive the upper shaft to rotate and drive the lower shaft to rotate synchronously; the first synchronous belt is provided between the lower shaft and the connecting shaft.

3. The loop transmission mechanism of a high-speed computer embroidery machine according to claim 2, characterized in that: The upper shaft and the lower shaft are both mounted on the main shaft housing and can rotate relative to the main shaft housing. A second tensioning roller is slidably mounted on the side of the second synchronous belt in the main shaft housing.

4. The loop transmission mechanism of a high-speed computer embroidery machine according to claim 3, characterized in that: The connecting shaft and the lower shaft are both mounted on the connecting box body and can rotate relative to it. A first tensioning roller is also slidably mounted on the side of the first synchronous belt in the connecting box body.

5. The loop transmission mechanism of a high-speed computer embroidery machine according to claim 1, characterized in that: One end of the joint bearing is a spherical structure, the joint shaft passes through its center and can rotate relative to it, and both ends of the joint shaft extend to the outside of the joint bearing; the other end of the joint bearing is a rod structure arranged perpendicular to the joint shaft, which can be detachably fixed on the eccentric piece.

6. The loop transmission mechanism of a high-speed computer embroidery machine according to claim 5, characterized in that: The eccentric member comprises an eccentric transmission part and a connecting part which are slidably connected. The connecting part is threadedly connected to the spherical bearing, and the eccentric transmission part is drivingly connected to the connecting shaft.

7. The loop transmission mechanism of a high-speed computer embroidery machine according to claim 5, characterized in that: Both ends of the V-shaped connecting rod are U-shaped ends, one of the U-shaped ends is hinged to the joint shaft, and the other U-shaped end extends to the radial sides of the ring shuttle shaft and is located between the two push plates.

8. The loop transmission mechanism of a high-speed computer embroidery machine according to claim 1, characterized in that: The reversing member comprises two meshingly connected helical gears, one of which is arranged on the ring shuttle shaft, and the other of which is arranged on the transmission shaft.

9. A loop transmission mechanism for a high-speed computer embroidery machine according to any one of claims 1 to 8, characterized in that: The connecting shaft, the positioning shaft and the loop shuttle shaft are all mounted on the loop box body through a plurality of bearings.

10. The loop transmission mechanism of a high-speed computer embroidery machine according to claim 9, characterized in that: The connecting shaft is mounted on the ring box through a plurality of self-aligning ball bearings.

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