Stroke-adjustable cutter driving mechanism

Abstract

The utility model relates to clothing machinery, in particular to a stroke-adjustable cutter driving mechanism which comprises a motor, the motor drives a connecting rod to reciprocate through a cam mechanism, and the difference between the motor and the prior art is that the lower end of the connecting rod is fixedly connected with a piston rod of an air cylinder, and a cylinder body of the air cylinder is connected with the cam mechanism. And the upper end of the connecting rod is directly or indirectly connected with the movable cutter. Compared with the prior art, through a pneumatic telescopic mechanism, the cutter can be automatically lowered to a safe position when not used, the situation that the cutter makes contact with cloth due to the fact that the cutter is too high is effectively avoided, and unnecessary damage to the cloth is reduced.

Description

Technical Field

[0001] The utility model relates to a clothing machine, in particular to a cutter driving mechanism with adjustable stroke. Background Art

[0002] Existing cutter drive mechanisms have been widely used in the field of garment machinery, but their fixed connecting rod length design limits their adaptability to different sewing needs. Since the start and end positions of the cutter cannot be adjusted, the cutter may make unnecessary contact with the fabric during high-speed sewing, causing fabric damage or uneven sewing lines, affecting the quality of the final product. In addition, the reciprocating stroke of the existing connecting rod mechanism is also fixed, which limits its flexibility in different sewing tasks, especially in complex sewing patterns that require different cutting lengths.

[0003] As the garment manufacturing industry continues to increase its requirements for production efficiency and product quality, the market is increasingly demanding linkage mechanisms that can be flexibly adjusted to adapt to changing sewing needs. However, existing solutions often fail to meet these needs, mainly because they lack sufficient flexibility and adjustability in design. Utility Model Content

[0004] The utility model is designed to solve the above problems. By introducing adjustable connecting rod length and cutter position, the mechanism can not only avoid unnecessary interference between the cutter and the fabric during sewing, but also adjust the stroke of reciprocating motion according to specific sewing needs, thereby improving production efficiency, reducing operation difficulty, and ultimately improving the overall quality of the product. In order to achieve the above purpose or one of the purposes, the technical solution adopted by the utility model is:

[0005] A stroke-adjustable cutter drive mechanism includes a motor, which drives a connecting rod to reciprocate through a cam mechanism. Different from the prior art, the lower end of the connecting rod is fixedly connected to the piston rod of a cylinder, the cylinder body of the cylinder is connected to the cam mechanism, and the upper end of the connecting rod is directly or indirectly connected to a moving knife.

[0006] Furthermore, the eccentricity of the cam mechanism is adjustable, and comprises a cylinder fixedly connected to the motor shaft of the motor, a T-slot penetrating through the side wall of the cylinder is provided on the outer end surface of the cylinder, and at least one radial screw hole communicating with the T-slot is provided on the side wall of the cylinder; the T-slot slidingly cooperates with a T-block, and the part of the T-block located outside the T-slot is connected to the cylinder body of the cylinder; at least one top screw is screwed to the radial screw hole and can press against the T-block.

[0007] Further, a bearing seat is fixedly connected to the lower end of the cylinder block of the cylinder, and a bearing is installed in the bearing seat through an internal circlip; an axial screw hole is axially formed in the T-shaped block corresponding to the cylinder body, and a fastening screw passes through the central hole of the inner ring of the bearing and the limit sleeve and is screwed to the axial screw hole.

[0008] Further, the connecting rod includes a screw tube and a screw rod screwed to the screw tube. A locking nut is also screwed on the screw rod, and the screw rod is fixedly connected to the piston rod of the cylinder.

[0009] Further, the screw rod and the piston rod of the cylinder are fixedly connected by a threaded coupling.

[0010] Further, the motor is a servo motor.

[0011] Compared with the prior art, the beneficial technical effects of the present utility model are as follows:

[0012] Avoid fabric damage: Through the pneumatic telescopic mechanism, the cutting knife can be automatically lowered to a safe position when not in use, effectively avoiding contact with the fabric due to the excessive height of the cutting knife, and reducing unnecessary damage to the fabric.

[0013] Improve the smoothness of the sewing process: The automatic adjustment of the cutting knife position ensures the smooth passage of the fabric during the sewing process, avoiding fabric jamming or sewing interruption caused by improper cutting knife position.

[0014] Reduce production interruption: Automatically adjusting the cutting knife position reduces production interruption caused by fabric damage or jamming, improving the continuity and stability of production.

[0015] Enhance operation safety: Lowering the height of the cutting knife when not in use reduces the risk of operators being injured during work, improving the safety of the working environment.

[0016] Optimize the equipment layout: The pneumatic telescopic mechanism allows the cutting knife to contract to a more compact position when not in use, helping to optimize the overall layout of the equipment and save space.

[0017] Enhance the versatility of the equipment: Through the pneumatic telescopic mechanism, the cutting knife can be quickly adjusted to a suitable position in different working states, enabling the equipment to adapt to more diverse sewing tasks.

[0018] Improve the reliability and durability of the equipment: The pneumatic system usually has a long service life and a low failure rate, reducing the maintenance cost and downtime of the equipment.

[0019] Achieve intelligent control: The pneumatic telescopic mechanism can be combined with the control system of the sewing machine to achieve automatic control and improve the intelligent level of the equipment.

[0020] Energy conservation and environmental protection: The pneumatic system has low energy consumption when not working, which helps to reduce the overall energy consumption and meets the requirements of modern manufacturing for energy conservation and environmental protection.

[0021] Enhance user experience: By reducing operation complexity, improving the operation simplicity and safety of the equipment, the overall satisfaction of users with the equipment is enhanced. Brief Description of the Drawings

[0022] Figure 1 It is a schematic structural view of the present utility model.

[0023] Figure 2 It is a schematic structural view of another perspective of the present utility model.

[0024] Figure 3 It is a schematic structural view of the cylinder body of the present utility model.

[0025] Figure 4 It is a schematic structural view of the T-shaped block of the present utility model.

[0026] Reference numerals in the figure: motor - 1, connecting rod - 2, solenoid tube - 21, screw rod - 22, locking nut - 23, cylinder - 3, cylinder body - 4, T-shaped groove - 41, radial screw hole - 42, T-shaped block - 5, setscrew - 7, bearing seat - 6, internal circlip - 8, bearing - 9, axial screw hole - 51, fastening screw - 10, limit sleeve - 11, coupling nut - 12. Detailed Description of the Invention

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 should not be construed as a limitation of the present utility model.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "communicated" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand the other advantages and effects of the present utility model from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0030] As Figures 1-4 shown, a cutting tool driving mechanism with adjustable stroke includes a motor 1. The motor 1 drives a connecting rod 2 to reciprocate through a cam mechanism. The lower end of the connecting rod 2 is fixedly connected to the piston rod of a cylinder 3. The cylinder block of the cylinder 3 is connected to the cam mechanism. The upper end of the connecting rod 2 is directly or indirectly connected to a moving cutter. The motor 1 in the mechanism is started, which provides a power source to drive the entire cutting tool driving mechanism. The cam mechanism converts the rotational motion of the motor into the reciprocating linear motion of the connecting rod 2. The lower end of the connecting rod 2 is connected to the piston rod of the cylinder 3 in a fixed connection manner. When the cam rotates, it pushes the connecting rod 2 to reciprocate. The cylinder block of the cylinder 3 is connected to the cam mechanism, which is used to assist or adjust the motion of the connecting rod 2, and can provide additional force and adjust the stroke of the connecting rod. The upper end of the connecting rod 2 is directly or indirectly connected to the moving cutter. This means that the reciprocating motion of the connecting rod 2 will be directly transmitted to the moving cutter, causing it to perform corresponding cutting actions. The design of the entire mechanism allows the position of the cutting tool to be lowered by retracting the piston rod of the cylinder when not cutting, avoiding the cutting tool from scraping the fabric when it is too high, and improving the operation safety and production efficiency.

[0031] In another preferred embodiment, the eccentricity of the cam mechanism is adjustable, and includes a barrel 4 fixedly connected to the motor shaft of the motor 1, a T-slot 41 penetrating the side wall of the barrel 4 is provided on the outer end surface of the barrel 4, and two radial screw holes 42 communicating with the T-slot 41 are provided on the side wall of the barrel 4; the T-slot 41 is slidably matched with a T-block 5, and the portion of the T-block 5 located outside the T-slot 41 is connected to the cylinder body of the cylinder 3; two top screws 7 are screwed with the radial screw holes 42 and can be pressed against the T-block 5. In addition, the lower end of the cylinder body of the cylinder 3 is fixedly connected to a bearing seat 6, and a bearing 9 is installed in the bearing seat 6 through an internal retaining ring 8; an axial screw hole 51 is provided on the T-block 5 corresponding to the axial direction of the barrel 4, and a fastening screw 10 passes through the inner ring center hole of the bearing 9 and the limiting sleeve 11 and is screwed with the axial screw hole 51. The T-block 5 slides in the T-slot 41 and can be moved to different positions as needed to change the eccentricity of the cam. The portion of the T-block 5 outside the T-slot 41 is connected to the cylinder body of the cylinder 3, so that the adjustment of the eccentric position of the cam can affect the stroke of the cylinder. Two top screws 7 are screwed with the radial screw holes 42 to tighten the T-block 5 and fix its position in the T-slot 41 to ensure that the eccentricity of the cam mechanism can be stably maintained after adjustment. The lower end of the cylinder body of the cylinder 3 is fixed to the bearing seat 6. This fixing method provides stable support for the cylinder. The bearing 9 is installed in the bearing seat 6 through the internal retaining ring 8. This installation method allows the bearing to be stably positioned in the bearing seat, and the use of the internal retaining ring provides a simple installation and disassembly method. An axial screw hole 51 is provided on the T-block 5 corresponding to the axial direction of the cylinder body 4. The fastening screw 10 passes through the inner ring center hole of the bearing 9 and the limiting sleeve 11 and is screwed with the axial screw hole 51. This connection method ensures a stable connection between the T-block 5 and the cylinder body of the cylinder 3. When the motor 1 rotates, it drives the connecting rod 2 to reciprocate through the cylinder 4 and the cam mechanism. By adjusting the position of the T-block 5, the stroke of the connecting rod 2 can be changed, thereby controlling the cutting depth and range of the moving knife. This design not only improves the adjustment flexibility of the cutter drive mechanism, but also enhances the stability and reliability of the mechanism, allowing the mechanism to adapt to more complex sewing tasks.

[0032] In another preferred embodiment, the connecting rod 2 includes a screw tube 21 and a screw rod 22 screwed to the screw tube 21. A locking nut 23 is also screwed onto the screw rod 22, and the screw rod 22 is fixedly connected to the piston rod of the air cylinder 3. The screw rod 22 and the piston rod of the air cylinder 3 are fixedly connected by a threaded coupling 12. This design allows the position of the screw tube 21 to be adjusted by rotating the screw rod 22, thereby changing the stroke of the moving knife. This adjustment method provides greater flexibility for the mechanism to adapt to different sewing requirements. The locking nut 23 is screwed onto the screw rod 22. After the screw rod 22 is adjusted to an appropriate position, the position of the screw rod can be fixed by the locking nut to prevent displacement during operation. This design simplifies the maintenance and adjustment process of the mechanism. If components need to be replaced or maintenance is required, the locking nut 23 can be easily loosened, and the screw rod 22 can be rotated for adjustment or replacement. Through these design improvements, the cutter driving mechanism can not only achieve precise adjustment of the stroke, but also improve the stability of the overall structure and the convenience of maintenance, making it more suitable for high-precision and high-efficiency sewing operations.

[0033] In another preferred embodiment, the motor 1 is a servo motor, which can accurately control the speed and torque of the motor through a control system to achieve more precise control of the cutter movement. Servo motors usually have a fast dynamic response ability and can start, accelerate, decelerate, and stop quickly, which is very important for application scenarios that require rapid adjustment of the cutter position. Servo motors are usually equipped with encoders that can provide precise position feedback to ensure that the cutter reaches the predetermined position, which is crucial for sewing operations that require high-precision positioning. The control accuracy of servo motors is high, and they operate smoothly, which can reduce errors caused by motor vibration or unstable operation and improve sewing quality.

[0034] Although the present invention has been described in detail with general descriptions and specific embodiments above, based on the present invention, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present invention all fall within the scope of protection required by the present invention.

[0035] The parts not described in detail in the present invention are the prior art or common general knowledge in the art.

Claims

1. A cutting tool driving mechanism with adjustable stroke, comprising a motor (1), wherein the motor (1) drives a connecting rod (2) to reciprocate through a cam mechanism, characterized in that, The lower end of the connecting rod (2) is fixedly connected to the piston rod of the cylinder (3); the cylinder body of the cylinder (3) is connected to the cam mechanism; and the upper end of the connecting rod (2) is directly or indirectly connected to the moving knife.

2. The stroke-adjustable cutter driving mechanism according to claim 1, wherein, The cam mechanism has an adjustable eccentricity and comprises a barrel (4) fixedly connected to the motor shaft of the motor (1); a T-shaped slot (41) penetrating through the side wall of the barrel (4) is provided on the outer end surface of the barrel (4); at least one radial screw hole (42) communicating with the T-shaped slot (41) is provided on the side wall of the barrel (4); the T-shaped slot (41) is slidably matched with a T-shaped block (5); a portion of the T-shaped block (5) located outside the T-shaped slot (41) is connected to the cylinder body of the cylinder (3); and at least one top screw (7) is screwed to the radial screw hole (42) and can be pressed against the T-shaped block (5).

3. The stroke-adjustable cutter driving mechanism according to claim 2, wherein, The lower end of the cylinder body of the cylinder (3) is fixedly connected to a bearing seat (6), and a bearing (9) is installed in the bearing seat (6) via an internal retaining ring (8); an axial screw hole (51) is provided on the T-block (5) corresponding to the axial direction of the cylinder body (4), and a fastening screw (10) passes through the inner ring center hole of the bearing (9) and the limiting sleeve (11) and is screwed to the axial screw hole (51).

4. A stroke-adjustable cutter driving mechanism according to claim 1, wherein, The connecting rod (2) comprises a screw tube (21) and a screw rod (22) screwed to the screw tube (21), a locking nut (23) being screwed to the screw rod (22), and the screw rod (22) is fixedly connected to the piston rod of the cylinder (3).

5. The travel-adjustable cutter driving mechanism according to claim 4, wherein The screw rod (22) is fixedly connected to the piston rod of the cylinder (3) via a threaded joint (12).

6. The travel-adjustable cutter driving mechanism according to claim 1, characterized in that, The motor (1) is a servo motor.

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