A computerized embroidery machine presser foot drive mechanism

Abstract

The utility model provides a computer embroidery machine presser foot drive mechanism, including transmission shaft, head component, drive motor, and drive motor is connected with transmission shaft through primary transmission belt mechanism, head component is connected with transmission shaft through secondary transmission belt mechanism, only one drive motor can drive all head components to run in the utility model, has reduced the arrangement quantity of motor, and the reduction of motor quantity has reduced the use of relevant supporting equipment simultaneously, such as motor driver, controller module etc, thereby effectively has reduced the manufacturing cost of embroidery machine, all head components acquire power through same transmission shaft in the utility model, avoid the problem of poor presser foot movement synchronization caused by the difference of multiple motor rotating speed and response delay in traditional scheme, ensure that the stitch position and density of different head embroidery are completely consistent, greatly reduce the quality defects such as pattern misregistration and splicing trace caused by synchronization problem.

Description

Technical Field

[0001] This utility model relates to the field of embroidery machine technology, and in particular to a presser foot drive mechanism for a computerized embroidery machine. Background Technology

[0002] Computerized embroidery machines, as industrial sewing equipment, have been widely used. The presser foot is one of the core components that ensures embroidery quality and stabilizes the embroidery process; its core function is to "fix the fabric and assist in the shaping of the embroidery thread." During operation, the presser foot needs to move up and down reciprocally. This up-and-down movement of the presser foot is achieved through the machine head assembly. The machine head assembly contains a presser foot drive block that can move linearly up and down. The machine head assembly is connected to a motor, which converts the motor's rotational motion into the up-and-down movement of the presser foot drive block, thus driving the presser foot to move up and down reciprocally.

[0003] Existing embroidery machines typically require the simultaneous movement of multiple presser feet, necessitating the installation of multiple machine head components. To drive these multiple machine head components, each component is equipped with its own motor, which independently drives the machine head component. Furthermore, each motor requires independent auxiliary components such as a driver, controller module, and wiring terminals. The more machine head components there are, the higher the cost of the motors, ultimately leading to a significant increase in the overall manufacturing cost of the embroidery machine. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies and provide a presser foot drive mechanism for a computerized embroidery machine.

[0005] The purpose of this utility model is achieved through the following technical solution: a presser foot drive mechanism for a computerized embroidery machine, comprising a drive shaft, a machine head component, and a drive motor, wherein the drive motor is connected to the drive shaft through a primary drive belt mechanism; and the machine head component is connected to the drive shaft through a secondary drive belt mechanism.

[0006] Preferably, the primary transmission belt mechanism includes a fixed base and a primary transmission belt. The fixed base is provided with a first primary pulley and a second primary pulley. The drive motor is provided on the fixed base, the third motor is provided with a third primary pulley, and the transmission shaft is provided with a fourth primary pulley. The first primary pulley, the second primary pulley, the third primary pulley, and the fourth primary pulley are connected to each other by the primary transmission belt.

[0007] Preferably, the secondary transmission belt mechanism includes a primary pulley mounted on the transmission shaft and a secondary pulley mounted on the head assembly, with the primary pulley and the secondary pulley connected by a secondary transmission belt.

[0008] Preferably, the primary transmission belt is connected to the middle position of the transmission shaft.

[0009] Preferably, the two ends of the drive shaft are connected to support seats.

[0010] Preferably, the component also includes a guide rail, and a slider is provided on the head unit, with the slider and guide rail slidingly engaged.

[0011] The beneficial effects of this utility model are: 1. In this utility model, only one drive motor is needed to drive all the machine head components at the same time, which reduces the number of motors. The reduction in the number of motors also reduces the use of related supporting equipment, such as motor drivers and controller modules, thereby effectively reducing the manufacturing cost of the embroidery machine.

[0012] 2. In this utility model, all machine head components obtain power through the same transmission shaft, which avoids the problem of poor synchronization of presser foot movement caused by the "difference in speed and response delay of multiple motors" in the traditional solution. This ensures that the position and density of the stitches embroidered by different machine heads are completely consistent, and greatly reduces quality defects such as pattern misalignment and splicing marks caused by synchronization problems.

[0013] 3. The drive motor is connected to the drive shaft through a primary transmission belt mechanism, which allows for flexible adjustment of the motor's position and eliminates spatial limitations on motor power. However, if the drive motor is directly connected to the drive shaft, the position of the drive motor will be restricted, and it can only be placed at one end of the drive shaft, which imposes strict spatial limitations on the motor.

[0014] 4. The drive motor, through the primary transmission belt mechanism, allows the motor to be installed in a location that avoids the dense and confined areas of the embroidery machine, and allows the drive motor to be located as close as possible to the outside of the equipment, thus facilitating motor maintenance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] In the diagram: 1. Head assembly, 2. Drive shaft, 3. Fixed base, 4. First primary pulley, 5. Second primary pulley, 6. Third primary pulley, 7. Fourth primary pulley, 8. Primary drive belt, 9. First primary pulley, 10. Second primary pulley, 11. Secondary drive belt, 12. Sliding body, 13. Guide rail, 14. Support base, 15. Drive motor. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0018] like Figure 1 As shown, a presser foot drive mechanism for a computerized embroidery machine includes a drive shaft 2, a machine head component 1, and a drive motor 15. The drive motor 15 is connected to the drive shaft 2 via a primary drive belt 8 mechanism; the machine head component 1 is connected to the drive shaft 2 via a secondary drive belt 11 mechanism.

[0019] When this utility model is in operation, the drive motor 15 drives the drive shaft 2 to rotate through the primary transmission belt 8 mechanism, and the drive shaft 2 then distributes the power to each machine head component 1 through the secondary transmission belt 11 mechanism, driving the pressure foot drive block in each machine head component 1 to move up and down reciprocally.

[0020] In this invention, only one drive motor 15 is needed to drive all the head components 1 at the same time, which reduces the number of motors required. The reduction in the number of motors also reduces the use of related supporting equipment, such as motor drivers and controller modules, thereby effectively reducing the manufacturing cost of the embroidery machine.

[0021] In this invention, all machine head components 1 obtain power through the same drive shaft 2, avoiding the problem of poor presser foot synchronization caused by differences in the speed and response delay of multiple motors in traditional solutions. This ensures that the stitch positions and density of stitches produced by different machine heads are completely consistent, significantly reducing quality defects such as pattern misalignment and splicing marks caused by synchronization issues. The synchronization of the machine head components 1 can be achieved by uniformly adjusting the height of the presser feet according to the thickness of the fabric.

[0022] The drive motor 15 is connected to the drive shaft 2 via the primary transmission belt 8 mechanism, allowing for flexible adjustment of the motor's position and unrestricted power output. In contrast, a direct connection between the drive motor 15 and the drive shaft 2 would restrict its placement, limiting it to one end of the shaft and imposing strict space constraints. The primary transmission belt 8 mechanism also allows the drive motor to be installed away from densely packed and confined areas on the embroidery machine, placing it as close as possible to the outside of the equipment for easier maintenance.

[0023] Furthermore, the pressing foot's descent causes the drive shaft 2 to bear an instantaneous impact load. If the drive motor 15 is directly connected to the drive shaft 2, this impact load will be directly transmitted from the drive shaft 2 to the drive motor 15, causing the drive motor 15 to bear a large load and affecting its lifespan. In this invention, the drive motor 15 is connected to the drive shaft 2 through a primary transmission belt 8 mechanism. The flexible transmission belt in the primary transmission belt 8 mechanism plays a good buffering role, absorbing part of the impact load and preventing the impact from being directly transmitted to the output shaft of the drive motor 15, thus improving the motor's service life.

[0024] The primary transmission belt mechanism includes a fixed base 3 and a primary transmission belt 8. A first primary pulley 4 and a second primary pulley 5 are mounted on the fixed base 3. A drive motor 15 is mounted on the fixed base 3, a third primary pulley 6 is mounted on the third motor, and a fourth primary pulley 7 is mounted on the transmission shaft 2. The first primary pulley 4, second primary pulley 5, third primary pulley 6, and fourth primary pulley 7 are all connected to the primary transmission belt 8. This invention distributes the force on the transmission belt to four contact points through the cooperation of the first and second primary pulleys 5 and the third and fourth primary pulleys 7. Simultaneously, the pulley position design ensures that the transmission belt maintains uniform tension throughout its travel, reducing the probability of belt slippage and ensuring efficient power transmission from the drive motor 15 to the transmission shaft 2, avoiding lag in the presser foot movement due to power loss.

[0025] The secondary drive belt 11 mechanism includes a primary pulley 9 mounted on the drive shaft 2 and a secondary pulley 10 mounted on the head assembly 1. The primary pulley 9 and the secondary pulley 10 are connected by the secondary drive belt 11.

[0026] The primary transmission belt 8 is connected to the middle of the drive shaft 2. The drive shaft 2, as an intermediate transmission component connecting multiple machine head components 1 (the number of machine head components 1 can be 4, 6, or 8), typically increases in length as the number of machine heads increases. If the primary transmission belt 8 is connected to the end of the drive shaft 2 (a common traditional design), the driving force of the motor will be concentrated at the shaft end, causing a "one-sided torque" problem in the drive shaft 2. That is, the machine head furthest from the power input end (such as the machine head at the end of the drive shaft 2) will experience power transmission lag due to the torsion of the drive shaft 2, manifesting as insufficient presser foot lifting height and movement jamming. In this invention, the drive motor 15 is connected to the drive shaft 2 through the primary transmission belt 8 mechanism, thus allowing for flexible selection of the connection position with the drive shaft 2. By selecting the middle of the drive shaft 2 as the connection position, the driving force is input from the midpoint of the drive shaft 2, preventing torque from being evenly distributed to both ends of the drive shaft 2. This reduces the torsional torque on the drive shaft 2, improves the balance of power transmission, and avoids inconsistent presser foot movement caused by the torsional deformation of the drive shaft 2.

[0027] Both ends of the drive shaft 2 are connected to support seats 14. The support seats 14 are equipped with bearings, and the ends of the drive shaft 2 are connected to the bearings on the support shaft, so that the drive shaft 2 and the support seats 14 can rotate together through the bearings.

[0028] This utility model also includes a guide rail 13, and a slider 12 is provided on the head component 1, with the slider 12 and guide rail 13 slidingly engaged. The guide rail 13 is fixedly mounted on the body of the embroidery machine and is parallel to the drive shaft 2. The installation position of the head component 1 can be adjusted through the sliding engagement between the slider 12 and the guide rail 13.

[0029] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. A presser foot drive mechanism for a computerized embroidery machine, characterized in that, It includes a drive shaft, a machine head assembly, and a drive motor. The drive motor is connected to the drive shaft via a primary drive belt mechanism; the machine head assembly is connected to the drive shaft via a secondary drive belt mechanism.

2. The presser foot drive mechanism of a computerized embroidery machine according to claim 1, characterized in that, The primary transmission belt mechanism includes a fixed base and a primary transmission belt. The fixed base is provided with a first primary pulley and a second primary pulley. The drive motor is provided on the fixed base, the third motor is provided with a third primary pulley, and the transmission shaft is provided with a fourth primary pulley. The first primary pulley, the second primary pulley, the third primary pulley, and the fourth primary pulley are connected to each other by the primary transmission belt.

3. The presser foot drive mechanism of a computerized embroidery machine according to claim 1, characterized in that, The secondary transmission belt mechanism includes a primary pulley mounted on the transmission shaft and a secondary pulley mounted on the head assembly. The primary pulley and the secondary pulley are connected by a secondary transmission belt.

4. The presser foot drive mechanism of a computerized embroidery machine according to claim 1, characterized in that, The primary transmission belt is connected to the middle of the transmission shaft.

5. The presser foot drive mechanism of a computerized embroidery machine according to claim 1, characterized in that, The two ends of the drive shaft are respectively connected to support seats.

6. The presser foot drive mechanism of a computerized embroidery machine according to claim 1, characterized in that, It also includes guide rails, and the head unit is provided with sliding bodies, which slide together with the guide rails.

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