Embroidery machine head with controllable take-up track

Abstract

An embroidery machine head with a controllable take-up track comprises a needle bar frame connected with the embroidery machine head, an embroidery needle bar and a take-up bar are installed on the needle bar frame, the embroidery needle bar moves up and down and is controlled by a cam driving device driven by a main shaft, the take-up bar is connected with take-up teeth in an attached mode to form a take-up assembly, and the take-up assembly is connected with an installation shaft of the needle bar frame. The take-up-lever and the take-up-tooth rotate synchronously, the side edge of the take-up-tooth is rotationally connected with a rolling bearing through an arc-shaped clamping groove, a connecting shaft in the middle of the rolling bearing is connected with a first connecting rod, and the first connecting rod is connected with a linear shaft driven by an independent motor. According to the utility model, the linear shaft driven by the independent motor is used for changing a traditional crankshaft or cam control change take-up track structure, and the take-up track is controlled by combining the up-and-down movement of the needle bar of the embroidery machine with the take-up lever driven by the linear shaft, so that the take-up track is adjustable.

Description

Technical Field

[0001] This utility model relates to the technical field of embroidery machine head equipment, and in particular to an embroidery machine head with controllable thread picking trajectory. Background Technology

[0002] Traditional embroidery machine heads typically use crankshaft or cam structures to control the thread take-up trajectory. These structures employ an arc-shaped control principle, meaning the thread take-up lever is driven by an arc-shaped force. While this arc-shaped or curved force causes variations in the thread take-up trajectory, these variations are limited to a fixed curve setting and are difficult to change once established. Although this control method achieves basic thread take-up functionality, the relatively fixed trajectory lacks flexibility and struggles to meet the demands of diverse embroidery patterns. With the development of the embroidery industry and technological advancements, higher demands are placed on the thread take-up trajectory control of embroidery machine heads. The machines need to achieve more complex and precise thread take-up trajectories to adapt to different embroidery patterns and materials.

[0003] Therefore, this utility model proposes an embroidery machine head with controllable thread picking trajectory, aiming to solve the problem of fixed thread picking trajectory and lack of flexibility in traditional embroidery machine heads. Utility Model Content

[0004] This invention provides an embroidery machine head with controllable thread-picking trajectory. Through a linear shaft structure driven by a motor, which works in conjunction with the up-and-down movement of the embroidery needle rod, the thread-picking trajectory can be precisely adjusted, thereby improving the quality and efficiency of embroidery.

[0005] A controllable thread-take-up trajectory embroidery machine head includes a needle bar frame connected to the machine head. The needle bar frame houses an embroidery needle bar and a thread-take-up lever. The up-and-down movement of the needle bar is controlled by a cam drive device driven by a main shaft. The thread-take-up lever is fitted with thread-take-up teeth to form a thread-take-up assembly. The thread-take-up assembly is connected to the mounting shaft of the needle bar frame. The thread-take-up lever and the thread-take-up teeth rotate synchronously. The side of the thread-take-up teeth is rotatably connected to a rolling bearing via an arc-shaped groove. A connecting shaft in the middle of the rolling bearing connects to a first connecting rod, which in turn connects to a linear shaft driven by an independent motor. This invention changes the traditional crankshaft or cam-controlled thread-take-up trajectory structure by using a linear shaft driven by an independent motor. The up-and-down movement of the embroidery machine needle bar, combined with the linear shaft-driven thread-take-up lever, controls the thread-take-up trajectory, achieving adjustable thread-take-up trajectory. The side of the thread take-up teeth is rotatably connected to a rolling bearing through an arc-shaped groove. The connecting shaft in the middle of the rolling bearing is connected to the first connecting rod, and the first connecting rod is connected to a linear shaft driven by an independent motor. This enables the thread take-up teeth to drive the thread take-up rod under the drive of the linear shaft driven by the independent motor, thus achieving controllable thread take-up trajectory of the embroidery machine head.

[0006] The direction of the up-and-down movement of the embroidery needle bar controls the rotation direction of the independent motor spindle, and controls the tightness of the embroidery thread when forming loops.

[0007] The height signal of the embroidery needle bar's up-and-down movement controls the rotation angle of the independent motor spindle, thereby controlling the arc of the embroidery thread forming a circle.

[0008] The time signal of the up-and-down movement of the embroidery needle bar controls the speed of the independent motor spindle, thereby controlling the time it takes for the embroidery thread to form a circle.

[0009] The independent motor drives the linear shaft through a pulley rotation device. The pulley rotation device includes a drive wheel connected to the main shaft of the independent motor, a driven wheel connected to a belt, and a tensioning wheel on the outside of the belt to improve the control accuracy and service life of the linear shaft.

[0010] The cam drive device includes a cam connecting rod connected to the main shaft. The cam connecting rod is connected to the middle connecting hole of the three-eye connecting rod through a first connecting shaft. One end of the three-eye connecting rod is connected to the embroidery machine head housing through a second connecting shaft. The other end of the three-eye connecting rod is connected to one end of the second connecting rod through a third connecting shaft. The other end of the second connecting rod is connected to the needle bar driver. The needle bar driver is connected to the embroidery needle bar through a limiting rod.

[0011] A thread-taking method for an embroidery machine head with controllable thread-taking trajectory is disclosed. The rotational speed of an independent motor spindle is controlled by the time signal of the up-and-down movement of the embroidery needle bar, the rotation angle of the independent motor spindle is controlled by the height signal of the up-and-down movement of the embroidery needle bar, and the rotation direction of the independent motor spindle is controlled by the direction of the up-and-down movement of the embroidery needle bar. The independent motor drives a linear shaft to drive the thread-taking rod and thread-taking teeth to rotate synchronously. The thread-taking trajectory is changed by the rotation angle and speed changes of the thread-taking rod driven by a non-crankshaft curve, in conjunction with the up-and-down movement of the embroidery needle bar.

[0012] The embroidery needle bar pauses midway during its up-and-down movement, generating a secondary up-and-down motion. An independent motor drives a linear shaft to simultaneously move the thread take-up lever and thread take-up teeth, thereby generating a secondary thread take-up to further enhance the three-dimensionality and aesthetics of the embroidery thread take-up.

[0013] This invention flexibly alters the trajectory of the embroidery thread by varying the rotational speed and angle of an independent motor spindle in conjunction with height, time, and direction signals from the up-and-down movement of the embroidery needle rod. This allows for diverse requirements of different embroidery patterns regarding thread trajectories. This thread-taking method not only expands the applicability of the embroidery machine but also significantly enhances the three-dimensionality and aesthetics of the embroidered product. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings:

[0015] Figure 1 This is a three-dimensional structural diagram of an embroidery machine head with controllable thread-taking trajectory according to the present invention;

[0016] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the head of an embroidery machine with controllable thread take-up trajectory according to this utility model;

[0017] Figure 3 This is a three-dimensional schematic diagram of the independent motor driving the take-up lever in this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the cam drive device in this utility model;

[0019] Figure 5 This is a schematic diagram of the installation structure of the cable-lifting rod in this utility model. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-5 The specific embodiments further illustrate the technical solution of this patent. A controllable thread-take-off trajectory embroidery machine head includes a needle bar frame 4 connected to the embroidery machine head. The needle bar frame 4 is equipped with an embroidery needle bar 5 and a thread-take-off lever 6. The up-and-down movement of the embroidery needle bar 5 is controlled by a cam drive device driven by a main shaft 14. The thread-take-off lever 6 is in contact with a thread-take-off tooth 2 to form a thread-take-off assembly. The thread-take-off assembly is connected to the mounting shaft 3 of the needle bar frame 4. The thread-take-off lever 6 and the thread-take-off tooth 2 rotate synchronously. The side of the thread-take-off tooth 2 is rotatably connected to a rolling bearing 23 through an arc-shaped groove 24. A connecting shaft 61 in the middle of the rolling bearing 23 is connected to a first connecting rod 7. The first connecting rod 7 is connected to a linear shaft 13 driven by an independent motor 1.

[0021] As a preferred control structure, the direction of the up-and-down movement of the embroidery needle bar 5 controls the rotation direction of the independent motor 1 spindle, thereby controlling the tightness of the embroidery thread loops. The height signal of the up-and-down movement of the embroidery needle bar 5 controls the rotation angle of the independent motor spindle, thereby controlling the curvature of the embroidery thread loops. The time signal of the up-and-down movement of the embroidery needle bar 5 controls the speed of the independent motor spindle, thereby controlling the time for the embroidery thread loops to form.

[0022] To improve drive stability and design lifespan, the independent motor 1 drives the linear shaft 13 through a pulley rotation device. The pulley rotation device includes a drive wheel 11 connected to the main shaft of the independent motor 1. The drive wheel 11 is connected to the driven wheel 9 through a belt 8. The driven wheel 9 is connected to the linear shaft 13. A tensioning wheel 10 is provided on the outside of the belt 8.

[0023] The cam drive device includes a cam link 16 connected to the main shaft 14. The cam link 16 is connected to the middle connecting hole of the three-eye link 17 through the first connecting shaft 25. One end of the three-eye link 17 is connected to the embroidery machine head housing 35 through the second connecting shaft 15. The other end of the three-eye link 17 is connected to one end of the second link 19 through the third connecting shaft 18. The other end of the second link 19 is connected to the needle bar driver 20. The needle bar driver 20 is connected to the embroidery needle bar 5 through the limiting rod 21.

[0024] A method for controlling the thread-taking trajectory of an embroidery machine head is disclosed. This method controls the rotational speed of an independent motor spindle via a time signal indicating the up-and-down movement of the embroidery needle bar, the rotational angle of the independent motor spindle via a height signal indicating the up-and-down movement of the embroidery needle bar, and the rotational direction of the independent motor spindle via the direction of the up-and-down movement of the embroidery needle bar. The independent motor drives a linear shaft 13, which in turn drives the thread-taking lever and thread-taking teeth to rotate synchronously. By changing the rotational angle and speed of the thread-taking lever under non-crankshaft curve drive, in conjunction with the up-and-down movement of the embroidery needle bar, the thread-taking trajectory is altered, improving the three-dimensionality and aesthetics of the thread-taking in the embroidery. However, while the non-crankshaft curve drive of the thread-taking lever changes the trajectory curve changes caused by traditional crankshaft or cam drives, it still suffers from a fixed curve path and is not truly a controllable change in the thread-taking trajectory.

[0025] As a further control method, the embroidery needle bar 5 pauses in the middle when moving up and down, generating a second up and down movement. The independent motor drives the linear shaft 13 to drive the thread take-up lever and the thread take-up teeth to synchronously generate a second thread take-up on the embroidery needle bar 5.

[0026] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A embroidery machine head with controllable thread take-up trajectory, comprising a needle bar frame (4) connected to the embroidery machine head, the needle bar frame (4) being equipped with an embroidery needle bar (5) and a thread take-up lever (6), the up-and-down movement of the embroidery needle bar (5) being controlled by a cam drive device driven by a main shaft (14), characterized in that: The thread take-up rod (6) is fitted to the thread take-up teeth (2) to form a thread take-up assembly. The thread take-up assembly is connected to the mounting shaft (3) of the needle bar frame (4). The thread take-up rod (6) and the thread take-up teeth (2) rotate synchronously. The side of the thread take-up teeth (2) is rotatably connected to the rolling bearing (23) through the arc-shaped slot (24). The connecting shaft (61) in the middle of the rolling bearing (23) is connected to the first connecting rod (7). The first connecting rod (7) is connected to the linear shaft (13) driven by the independent motor (1). The direction of the up and down movement of the embroidery needle bar (5) controls the rotation direction of the main shaft of the independent motor (1) and controls the tightness of the embroidery thread when it forms a circle.

2. The embroidery machine head with controllable thread take-up trajectory according to claim 1, characterized in that: The height signal of the embroidery needle bar (5) moving up and down controls the rotation angle of the independent motor spindle, and controls the arc of the embroidery thread forming a circle.

3. The embroidery machine head with controllable thread take-up trajectory according to claim 1, characterized in that: The time signal of the up-and-down movement of the embroidery needle bar (5) controls the rotation speed of the independent motor spindle, and controls the time for the embroidery thread to form a circle.

4. The embroidery machine head with controllable thread take-up trajectory according to claim 1, characterized in that: The independent motor (1) drives the linear shaft (13) through a pulley rotation device. The pulley rotation device includes a drive wheel (11) connected to the main shaft of the independent motor (1). The drive wheel (11) is connected to the driven wheel (9) through a belt (8). The driven wheel (9) is connected to the linear shaft (13). A tensioning wheel (10) is provided on the outside of the belt (8).

5. The embroidery machine head with controllable thread take-up trajectory according to claim 1, characterized in that: The cam drive device includes a cam link (16) connected to the main shaft (14). The cam link (16) is connected to the middle connecting hole of the three-eye link (17) through the first connecting shaft (25). One end of the three-eye link (17) is connected to the embroidery machine head housing (35) through the second connecting shaft (15). The other end of the three-eye link (17) is connected to one end of the second link (19) through the third connecting shaft (18). The other end of the second link (19) is connected to the needle bar driver (20). The needle bar driver (20) is connected to the embroidery needle bar (5) through the limiting rod (21).

Images