Tapping embroidery device

Abstract

The utility model discloses a taping embroidery device. The taping embroidery device comprises a needle bar, a rotating shaft and a connecting assembly, a presser foot sleeve is arranged on the outer side of the needle bar, and a driven wheel is arranged on the outer side of the presser foot sleeve; the axis of the rotating shaft is parallel to the extending direction of the needle bar, a driving wheel is arranged outside the rotating shaft, and the driving wheel and the driven wheel are connected through a flexible transmission part and rotate synchronously; the rotating shaft and the driving wheel are connected through a connecting assembly, so that buffering movement exists between the rotating shaft and the driving wheel. Through relative movement of the rotating shaft and the driving wheel in the circumferential direction, when the rotating shaft starts to rotate or stops, the starting time and the stopping time of the driving wheel and the driven wheel are prolonged due to the effect of the connecting assembly, that is, the rotating rotating shaft cannot drive the driving wheel to rotate together at the first time, or the rotating shaft cannot drive the driven wheel to rotate at the second time. The stopped rotating shaft cannot drive the driving wheel to stop together at the first time, so that sudden stop and sudden rotation of the frame body are avoided, the rotation inertia of the frame body is overcome, and the frame body cannot shake.

Description

Technical Field

[0001] This utility model generally relates to the field of computerized embroidery machine technology, and more particularly to a ribbon embroidery device. Background Technology

[0002] A ribbon embroidery device is used for embroidering ribbons and / or cords. A typical ribbon embroidery device includes a needle bar, a needle mounted on the needle bar, a presser foot sleeve, and a thread frame assembly. The thread frame assembly includes a frame and a winding wheel mounted on the frame, on which ribbon or cord is wound. To improve the continuous working time of ribbon embroidery, existing feeding sections use large-sized winding wheels to easily carry large volumes of ribbon.

[0003] During ribbon embroidery, the needle pierces the fabric, and the thread secures the cord or ribbon to the fabric. Moving the embroidery frame at this time moves the cord / ribbon. Simultaneously, with the presser foot sleeve's rapid rotation and stop, the frame also rotates and stops accordingly. When the frame is overloaded, problems can easily occur during rapid stops or rotations. For example, the frame's rotational inertia is high during rotation, causing it to sway, increasing noise, and increasing the torque on the motor shaft due to inertia, thus increasing the motor load. The swaying can also affect the quality of the embroidery. Utility Model Content

[0004] This application aims to provide a device for embroidery, which at least avoids sudden stops and turns of the frame, overcomes and reduces the rotational inertia of the frame, and prevents the frame from shaking violently. This effectively protects the frame itself and the motor, and more importantly, protects the quality of the embroidery.

[0005] This utility model provides a device for ribbon embroidery, including a needle bar, a rotating shaft, and a connecting component.

[0006] The needle bar is provided with a presser foot sleeve on the outside, and a driven wheel is provided on the outside of the presser foot sleeve; the axis of the rotating shaft is arranged parallel to the extension direction of the needle bar, and a driving wheel is provided on the outside of the rotating shaft. The driving wheel and the driven wheel are connected by a flexible transmission component and rotate synchronously; the rotating shaft and the driving wheel are connected by the connecting assembly, so that there is a buffered movement between the rotating shaft and the driving wheel.

[0007] As an alternative implementation, the presser foot sleeve and the rotating shaft move synchronously via a transmission mechanism.

[0008] As an implementation method, the transmission mechanism includes a first pulley connected to the rotating shaft, a second pulley, a first gear coaxially arranged above and below the second pulley, and a second gear meshing with the first gear. The second gear is installed on the outside of the presser foot sleeve, and the presser foot sleeve and the second gear rotate synchronously.

[0009] As an implementation manner, the connecting assembly comprises an inner ring, an outer ring and a flexible connecting piece, the flexible connecting piece is located between the inner ring and the outer ring, the inner ring rotates to drive the outer ring to rotate through the flexible connecting piece, so that the outer ring and the inner ring have relative movement in the circumferential direction, and the rotating shaft is inserted into the inner ring.

[0010] As an implementation manner, the outer ring is provided with a cavity, the outer ring is provided with a first protrusion located in the cavity, the inner ring is located in the cavity, the inner ring is provided with a second protrusion located in the cavity, and the first spring is clamped between the second protrusion and the first protrusion, and the first spring is the flexible connecting piece.

[0011] As an implementation manner, the outer ring and the inner ring are coaxially arranged, two first protrusions are protruded on the inner side of the cavity side wall along the radial direction of the cavity side wall; the outer side of the inner ring is protruded with two second protrusions along the radial direction of the inner ring, and the second protrusions are located between the two first protrusions.

[0012] As an implementation manner, the outer ring is provided with a cavity, the inner ring is located in the cavity, the inner ring is provided with a mounting piece located in the cavity, a second spring is mounted on the mounting piece, one end of the second spring is provided with a driven piece, the driven piece moves along the inner side of the cavity side wall, the inner side of the cavity side wall limits the compression degree of the second spring, and the second spring is the flexible connecting piece.

[0013] As an implementation manner, the driven piece is a rolling piece, the mounting piece comprises a support frame and a sliding block, the support frame is provided with a sliding rail in the radial direction of the inner ring, the sliding block is in sliding fit with the sliding rail, and the rolling piece is rotationally connected to the sliding block.

[0014] The second spring is compressed along the length direction of the sliding rail, one end of the second spring is mounted on the support frame, and the other end is connected to the sliding block.

[0015] As an implementation manner, the cavity side wall is a variable-curvature curved surface side wall, comprising a minimum-curvature position A and a maximum-curvature position B, and the curvature of the cavity side wall gradually increases from the minimum-curvature position A to the maximum-curvature position B.

[0016] As an implementation manner, a stop protrusion is arranged on the inner side of the cavity side wall, the stop protrusion is arranged close to the maximum-curvature position, and the stop protrusion is in stop fit with the rolling piece.

[0017] The above-mentioned solution utilizes a buffered motion between the rotating shaft and the driving wheel, meaning there is relative motion between them in the circumferential direction. When the rotating shaft starts to rotate or stops, the connecting components extend the time it takes for the driving wheel and driven wheel to reach the same speed as the rotating shaft. In other words, the rotating shaft cannot immediately drive the driving wheel to rotate at the same speed, or the stopped shaft cannot immediately drive the driving wheel to stop at the same time. This avoids sudden stops and turns of the frame, overcomes the rotational inertia of the frame, and prevents the frame from shaking violently. At the same time, the motor shaft synchronously drives the pressure foot sleeve to rotate. The motor shaft can provide a power source for both the pressure foot sleeve and the driving frame. Compared to structures that require two motors to drive two types of rotation, this setting can reduce the number of motor components and significantly reduce production costs. Attached Figure Description

[0018] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 A schematic diagram of the structure of a ribbon embroidery device provided for an embodiment of this utility model;

[0020] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0021] Figure 3 Schematic diagram of the structure of the first connecting component provided in the embodiment of this utility model Figure 1 ;

[0022] Figure 4 Schematic diagram of the structure of the first connecting component provided in the embodiment of this utility model Figure 2 ;

[0023] Figure 5 A schematic diagram of the outer ring structure of the first connecting component provided in this embodiment of the utility model;

[0024] Figure 6 A schematic diagram of the connection structure between the first connecting component and the driving wheel provided in this embodiment of the utility model;

[0025] Figure 7 Schematic diagram of the structure of the second connecting component provided in the embodiment of this utility model Figure 1 ;

[0026] Figure 8 Schematic diagram of the structure of the second connecting component provided in the embodiment of this utility model Figure 2 ;

[0027] Figure 9 This is a schematic diagram of the connection structure between the second connecting component and the drive wheel provided in an embodiment of the present utility model;

[0028] needle bar 10, presser bar sleeve 20, driving wheel 31, driven wheel 32, flexible transmission member 33;

[0029] connecting assembly 40, outer ring 41, cavity 411, first through hole 4111, stopper protrusion 4112, first protrusion 412, first mounting groove 4121, inner ring 42, second protrusion 421, second mounting groove 4211, flexible connecting member 43, mounting member 44, support frame 441, sliding rail 4411, sliding block 442, driven member 45;

[0030] rotating shaft 50, frame body 60, fixing sleeve 70, transmission mechanism 80, first belt wheel 81, second belt wheel 82, first gear wheel 83, second gear wheel 84, synchronous belt 85. DETAILED DESCRIPTION

[0031] The application will be further described below in detail with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related utility model, and are not a limitation on the utility model. In addition, it should be noted that only parts related to the utility model are shown in the drawings for ease of description.

[0032] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0033] The application will be further described below in detail with reference to the drawings and embodiments. Figures 1-9 The disc belt embroidery device is described as follows:

[0034] The disc belt embroidery device comprises a needle bar 10, a presser bar sleeve 20, a fixing sleeve 70, a rotating shaft 50, a connecting assembly 40, and a transmission mechanism 80.

[0035] As shown in Figure 1 and Figure 2 , the needle bar 10 is arranged in the vertical direction. The needle bar 10 is provided with the presser bar sleeve 20 outside, and the presser bar sleeve 20 is provided with the driven wheel 32 and the fixing sleeve 70 outside. The driven wheel 32 and the fixing sleeve 70 are coaxially arranged, and can be integrally formed or separately arranged. The frame body 60 is fixedly connected to the fixing sleeve 70, and the frame body 60 rotates with the fixing sleeve 70. The presser foot and the nozzle are connected to the presser bar sleeve 20, and the belt or rope output through the nozzle is output to the needle on the needle bar 10. The presser bar sleeve 20 can move up and down and can rotate. The driven wheel 32, the fixing sleeve 70, and the frame body 60 rotate synchronously, and the movement of the presser bar sleeve 20 is independent of the movement of the fixing sleeve 70.

[0036] The rotation axis of the rotation shaft 50 is parallel to the extending direction of the needle bar 10, and the rotation shaft 50 is provided with a driving wheel 31. The driving wheel 31 and a driven wheel 32 are connected by a flexible transmission member 33 to rotate synchronously. The driving wheel 31 and the driven wheel 32 can be synchronous wheels, sprockets, and correspondingly, the flexible transmission member 33 can be a synchronous belt or a chain. The rotation shaft 50 and the driving wheel 31 are connected by a connecting assembly 40, so that there is a buffer motion between the rotation shaft 50 and the driving wheel 31, that is, there is a relative motion in the circumferential direction between the two.

[0037] The rotation shaft 50 and the presser foot sleeve 20 move synchronously through a transmission mechanism 80.

[0038] The connecting assembly 40 is described in detail as follows:

[0039] As shown in Figures 3-6 , the connecting assembly 40 includes an inner ring 42, an outer ring 41, and a flexible connecting member 43. The flexible connecting member 43 is located between the inner ring 42 and the outer ring 41. The inner ring 42 rotates to drive the outer ring 41 to rotate through the flexible connecting member 43, so that the outer ring 41 and the inner ring 42 have a relative motion in the circumferential direction. The rotation shaft 50 is inserted into the inner ring 42.

[0040] In an embodiment, as shown in Figure 3 and Figure 4 , the outer ring 41 is provided with a cavity 411, and the outer ring 41 is provided with a first protrusion 412 located in the cavity 411. The inner side of the side wall of the cavity 411 is provided with two first protrusions 412 along the radial direction. The inner ring 42 is located in the cavity 411, and the outer ring 41 and the inner ring 42 are coaxially arranged. The inner ring 42 is provided with a second protrusion 421 located in the cavity 411. The outer side of the inner ring 42 is provided with two second protrusions 421 along the radial direction, and the second protrusions 421 are located between the two first protrusions 412. The first spring is clamped between the second protrusion 421 and the first protrusion 412, and the first spring is the flexible connecting member 43. The rotation shaft 50 is inserted into the inner ring 42, and the driving wheel 31 is connected to the outer ring 41 by a fastener, and the fastener passes through a first through hole 4111 in the bottom of the cavity 411.

[0041] As shown in Figure 6 , the first protrusion 412 is provided with a first mounting groove 4121 or a first mounting column; and the second protrusion 421 is provided with a second mounting groove 4211 or a second mounting column. For example, one end of the first spring is mounted in the first mounting groove 4121, and the other end is mounted in the second mounting groove 4211; or one end of the first spring is mounted in the first mounting column, and the other end is mounted in the second mounting column; or one end of the first spring is mounted in the first mounting groove 4121, and the other end is mounted in the second mounting column, etc.

[0042] The rotation shaft 50 starts to rotate at V1, at the current time, the inner ring 42 rotates at V1, and the inner ring 42 has a speed of 0, the inner ring 42 and the outer ring 41 have relative movement in the circumferential direction, under the compression of the first spring, the speed of the outer ring 41 gradually increases from 0 to V1, and the inner ring 42 and the outer ring 41 rotate synchronously at V1. Since the process of gradually increasing the speed of the outer ring 41 from 0 to V1 takes a certain period of time, the driving wheel 31 slowly starts to rotate at V1, so that the frame body 60 slowly starts to rotate at V1, avoiding the frame body 60 from rotating synchronously with the rotation shaft 50 and the frame body 60 from rotating rapidly, overcoming the rotational inertia of the frame body 60, so that the frame body 60 does not shake.

[0043] The rotation shaft 50 starts to stop at V1, at the current time, the inner ring 42 stops, and the inner ring 42 has a speed of V1, the inner ring 42 and the outer ring 41 have relative movement in the circumferential direction, under the compression of the first spring, the speed of the outer ring 41 gradually decreases from V1 to 0, and the inner ring 42 and the outer ring 41 stop together. Since the process of gradually decreasing the speed of the outer ring 41 from V1 to 0 takes a certain period of time, the driving wheel 31 slowly decelerates and then stops, so that the frame body 60 slowly decelerates and then stops, avoiding the frame body 60 from stopping synchronously with the rotation shaft 50 and the frame body 60 from stopping rapidly, overcoming the rotational inertia of the frame body 60, so that the frame body 60 does not shake.

[0044] In this way, when the rotation shaft 50 starts to rotate or stop, due to the effect of the connecting assembly 40, the starting time and stopping time of the driving wheel 31 and the driven wheel 32 are prolonged, that is, the rotating rotation shaft 50 cannot drive the driving wheel 31 to rotate at the first time, or the stopping rotation shaft 50 cannot drive the driving wheel 31 to stop at the first time, thereby avoiding the frame body 60 from stopping or rotating rapidly, overcoming the rotational inertia of the frame body 60, so that the frame body 60 does not shake.

[0045] In another embodiment, as shown in Figures 7-9 The outer ring 41 is provided with a cavity 411, the inner ring 42 is located in the cavity 411, and the outer ring 41 and the inner ring 42 are coaxially arranged. The inner ring 42 is provided with a mounting piece 44 located in the cavity 411, the second spring is mounted on the mounting piece 44, one end of the second spring is provided with a driven part 45, the driven part 45 moves along the inner side surface of the side wall of the cavity 411, and the inner side surface of the side wall of the cavity 411 limits the compression degree of the second spring. The second spring is a flexible connecting piece 43. The rotation shaft 50 is embedded in the inner ring 42, the driving wheel 31 is connected to the outer ring 41 through a fastener, and the fastener passes through a first through hole 4111 in the bottom of the cavity 411.

[0046] Among them, the driven part 45 can be a rolling part or a sliding part.

[0047] As shown in Figure 8As shown, mounting component 44 is fixedly connected to the inner ring 42. Mounting component 44 includes a support frame 441 and a slider 442. The support frame 441 is provided with a slide rail 4411 radially along the inner ring 42, and the slider 442 slides in engagement with the slide rail 4411. A second spring is compressed along the length of the slide rail 4411. One end of the second spring is mounted on the support frame 441 or passes through the support frame 441 and is mounted on the inner ring 42, while the other end is connected to the slider 442. A rolling element is rotatably connected to the slider 442.

[0048] Cavity 411 sidewalls as Figure 8 As shown, the sidewall of cavity 411 is a variable curvature surface sidewall, including a minimum curvature position A and a maximum curvature position B. From the minimum curvature position A to the maximum curvature position B, the curvature of the sidewall of cavity 411 gradually increases. The sidewall of cavity 411 has two minimum curvature positions A and four maximum curvature positions B: the first maximum curvature position B1 to the fourth maximum curvature position B4. The first maximum curvature position B1, one minimum curvature position A, and the second maximum curvature position B2 are arranged clockwise in the circumferential direction, and the third maximum curvature position B3, another minimum curvature position A, and the fourth maximum curvature position B4 are also arranged clockwise in the circumferential direction. The two minimum curvature positions A are symmetrically arranged about the geometric center of the outer ring 41, and the four maximum curvature positions B are symmetrically arranged about the geometric center of the outer ring 41.

[0049] In this way, when the rotating shaft 50 starts to rotate or stops, the starting time and stopping time of the driving wheel 31 and the driven wheel 32 are extended due to the function of the connecting component 40. That is, the rotating shaft 50 cannot drive the driving wheel 31 to rotate together immediately, or the stopped shaft 50 cannot drive the driving wheel 31 to stop together immediately. This avoids the sudden stop and sudden rotation of the frame 60, overcomes the rotational inertia of the frame 60, and prevents the frame 60 from shaking.

[0050] Furthermore, a stop protrusion 4112 is provided on the inner side of the sidewall of the cavity 411. The stop protrusion 4112 is located near the position B with the maximum curvature and cooperates with the rolling element stop.

[0051] like Figure 8 As shown, a stop protrusion 4112 is provided between the second maximum curvature position B2 and the third maximum curvature position B3; another stop protrusion 4112 is provided between the fourth maximum curvature position B4 and the first maximum curvature position B1. The stop protrusion 4112 cooperates with the rolling element stop to prevent the stop from accidentally moving past the rolling element at the maximum curvature position B.

[0052] The transmission mechanism 80 is described in detail below:

[0053] like Figure 2As shown, the transmission mechanism 80 comprises a first pulley 81, a second pulley 82, a synchronous belt 85 connecting the first pulley 81 and the second pulley 82, and a first gear 83 and a second gear 84 meshing with each other. The first gear 83 and the second pulley 82 are coaxially arranged, and the second pulley 82 drives the first gear 83 to rotate. The first pulley 81 is mounted on the rotating shaft 50, and the second gear 84 is used to drive the presser tube 20 to rotate. In this way, the rotating shaft 50 rotates, so that the presser tube 20 moves synchronously with the rotating shaft 50.

[0054] The rotating shaft 50 drives the presser tube 20 to rotate on one hand, and drives the frame body 60 to rotate on the other hand, so that the rotating shaft 50 can simultaneously provide power sources for the presser tube 20 and the frame body 60. Compared with a structure requiring two motors to drive two rotations, such an arrangement can save costs and reduce production costs.

[0055] It should be understood that the above description refers to the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise stated, the meaning of "multiple" is two or more.

[0056] The above description is only the preferred embodiment of the present application and the explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model disclosed in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the technical solutions formed by replacing the above features with the technical features disclosed in the present application (but not limited to) having similar functions.

Claims

1. A disc band embroidery apparatus characterized by comprising: The utility model relates to a needle bar (10) outside is equipped with the presser foot sleeve (20), the presser foot sleeve (20) outside is equipped with the driven wheel (32), the rotation shaft (50) axis is parallel with the needle bar (10) extension direction arrangement, the rotation shaft (50) outside is equipped with the driving wheel (31), the driving wheel (31) with the driven wheel (32) are connected through the flexible transmission part (33) and are synchronous rotation, the connecting assembly (40) is connected through the connecting assembly (40) between the rotation shaft (50) with the driving wheel (31), and there is the buffer motion between the rotation shaft (50) with the driving wheel (31). The presser foot sleeve (20) and the rotation shaft (50) are synchronous motion through the transmission mechanism (80). The transmission mechanism (80) includes the first pulley (81) connected to the rotation shaft (50), the second pulley (82), the first gear (83) arranged coaxially and up and down with the second pulley (82), the second gear (84) engaged with the first gear (83), The second gear (84) is installed on the outside of the presser foot sleeve (20), and the presser foot sleeve (20) and the second gear (84) are synchronous rotation.

2. The device of claim 1, wherein The connecting assembly (40) includes an inner ring (42), an outer ring (41) and a flexible connecting piece (43), the flexible connecting piece (43) is located between the inner ring (42) and the outer ring (41), 3. The device of claim 2, wherein The inner ring (42) rotates, drives the outer ring (41) to rotate through the flexible connecting piece (43), so that the outer ring (41) and the inner ring (42) exist relative motion in the circumferential direction, wherein the rotation shaft (50) is inserted into the inner ring (42). The outer ring (41) is provided with a cavity (411), and the outer ring (41) is provided with a first protrusion (412) located in the cavity (411), 4. The device of claim 1, wherein The inner ring (42) is located in the cavity (411), and the inner ring (42) is provided with a second protrusion (421) located in the cavity (411), and a first spring is clamped between the first protrusion (412) and the second protrusion (421), and the first spring is the flexible connecting piece (43). The outer ring (41) and the inner ring (42) are coaxially arranged, and the inner side of the side wall of the cavity (411) is convexly provided with two first protrusions (412) along the radial direction thereof; the outer side of the inner ring (42) is convexly provided with two second protrusions (421) along the radial direction thereof, and the second protrusions (421) are located between the two first protrusions (412).

5. The device of claim 4, wherein the disk is a circular disk. The outer ring (41) is provided with a cavity (411), ​ 6. The device of claim 5, wherein the disk is a circular disk. ​ 7. The device of claim 4, wherein the disk is a circular disk. ​ The inner ring (42) is located in the cavity (411), the inner ring (42) is provided with a mounting part (44) located in the cavity (411), a second spring is mounted on the mounting part (44), one end of the second spring is provided with a driven part (45), the driven part (45) moves along the inner side of the side wall of the cavity (411), the inner side of the side wall of the cavity (411) limits the compression degree of the second spring, and the second spring is the flexible connecting part (43).

8. The device of claim 7, wherein the disk is a circular disk. The driven part (45) is a rolling part, the mounting part (44) comprises a support frame (441) and a sliding block (442), the support frame (441) is provided with a sliding rail (4411) in the radial direction of the inner ring (42), the sliding block (442) is in sliding fit with the sliding rail (4411), and the rolling part is rotationally connected to the sliding block (442). The second spring is compressed in the length direction of the sliding rail (4411), one end of the second spring is mounted on the support frame (441), and the other end is connected to the sliding block (442).

9. The device of claim 8, wherein the disk is a circular disk. The side wall of the cavity (411) is a variable-curvature curved surface side wall, comprising a minimum-curvature position A and a maximum-curvature position B, and the curvature of the side wall of the cavity (411) gradually increases from the minimum-curvature position A to the maximum-curvature position B.

10. The device of claim 9, wherein the disk is a circular disk. The inner side of the side wall of the cavity (411) is provided with a stop protrusion (4112), the stop protrusion (4112) is arranged close to the maximum-curvature position, and the stop protrusion (4112) is in stop fit with the rolling part.

Images