Stepping type multi-needle machine thread trimmer group

Abstract

The utility model relates to clothing machinery, in particular to a thread trimmer group of a stepping type multi-needle machine, which comprises a U-shaped bottom plate, a fixed cutter is fixedly connected to an opening of the U-shaped bottom plate, a plurality of thread hooking cutters are fixedly connected to a thread trimming connecting plate, and each thread hooking cutter and the fixed cutter form a shearing pair; different from the prior art, a left guide rail and a right guide rail are fixedly arranged on the U-shaped bottom plate, a left sliding block and a right sliding block are matched with the left guide rail and the right guide rail respectively, the left connecting plate is fixedly connected with the left sliding block and the rear end of the left sliding plate, and the right connecting plate is fixedly connected with the right sliding block and the rear end of the right sliding plate. Wherein the rear end of the right connecting plate backwards extends out of the U-shaped bottom plate and is provided with a connecting hole, and a linear driving mechanism driven by a stepping motor is connected with the right connecting plate through the connecting hole. Compared with the prior art, due to the fact that the device does not depend on an air source, small garment processing enterprises do not need to purchase and maintain air source equipment, and therefore initial investment and operation cost are reduced.

Description

Technical Field

[0001] The utility model relates to clothing machinery, in particular to a step-type multi-needle machine thread cutting knife group. Background Art

[0002] At present, the multi-needle machine thread cutting knife groups on the market are generally pneumatic models. For example, a multi-needle automatic thread cutting mechanism disclosed by the applicant earlier with the publication number CN218115819U fixes the connection arm of the cylinder pulling rod and the thread cutting mechanism, and provides stable air pressure to 2 cylinders through the air source. The air pressure drives the retraction and extension of the cylinder pulling rod, thereby driving the whole row of thread hooking knives on the connection arm of the thread cutting mechanism to perform the actions of blade out and blade retraction. Although this design is easy to operate, it relies on a stable air source supply, which limits its application in small clothing processing enterprises because these enterprises often do not have a stable air source. Summary of the Utility Model

[0003] In order to reduce the dependence on the air source, the utility model proposes a step-type multi-needle machine thread cutting knife group, which is driven by a stepping motor, not only reduces the procurement cost, but also reduces the energy consumption in daily operation, providing an economical and efficient solution for small clothing processing enterprises. The technical solution adopted by the utility model is as follows:

[0004] A step-type multi-needle machine thread cutting knife group includes a U-shaped bottom plate. A fixed knife is fixedly connected to the opening of the U-shaped bottom plate. A plurality of thread hooking knives are fixedly connected to a thread cutting connection plate. Each thread hooking knife and the fixed knife form a shearing pair. The left and right ends of the thread cutting connection plate are respectively fixedly connected to the front ends of a left slide plate and a right slide plate. Different from the prior art, left and right guide rails are fixedly arranged on the U-shaped bottom plate. A left slider and a right slider are respectively fitted on the left and right guide rails. A left connecting plate fixedly connects the left slider and the rear end of the left slide plate. A right connecting plate fixedly connects the right slider and the rear end of the right slide plate. The rear end of the right connecting plate extends out of the U-shaped bottom plate backward and is provided with a connection hole. A linear driving mechanism driven by a stepping motor is connected to the right connecting plate through the connection hole.

[0005] Further, due to the cooperation between the guide rail and the slider, the left pressing plate and the right pressing plate for limiting the left slide plate and the right slide plate are abandoned.

[0006] Further, the linear driving mechanism is a screw / nut mechanism, a crank / slider mechanism, a gear / rack mechanism, a belt / slider mechanism, a swing guide bar mechanism or a cam / slide pin mechanism.

[0007] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0008] Cost reduction: Since it does not depend on the air source, small clothing processing enterprises do not need to purchase and maintain air source equipment, thus reducing the initial investment and operating costs.

[0009] Improve applicability: The wire cutting knife group driven by a stepper motor can be applied to environments without air source supply, enabling small enterprises to also use efficient wire cutting equipment.

[0010] Energy-saving and efficient: The energy consumption of a stepper motor is usually lower than that of a pneumatic system, and it can precisely control the wire cutting action, improving energy use efficiency.

[0011] Easy to operate: The control of a stepper motor is relatively simple, easy to achieve automatic control, reducing manual operation and improving production efficiency.

[0012] Easy to maintain: Compared with the pneumatic system, the stepper motor system has a simple structure, lower maintenance costs, and relatively fewer failure rates.

[0013] Precise control: The stepper motor can provide precise angle control, thus achieving precise positioning of the wire cutting action and improving wire cutting quality.

[0014] Good stability: The wire cutting knife group driven by a stepper motor is not affected by the fluctuation of air source pressure, ensuring the stability and consistency of the wire cutting action.

[0015] Easy to integrate: The system driven by a stepper motor is easy to integrate with modern automatic control systems, facilitating the realization of more advanced automated production processes.

[0016] Environmental benefits: Reducing the dependence on compressed air, lowering energy consumption and environmental impact, which is in line with the concept of green production.

[0017] High flexibility: The stepper motor can adjust speed and force according to needs, adapting to the shearing requirements of different materials and thicknesses. Description of the drawings

[0018] Figure 1 It is a schematic structural diagram of the present utility model.

[0019] Figure 2 It is a schematic structural diagram of another perspective of the present utility model.

[0020] Reference numerals in the figure: U-shaped bottom plate - 1, fixed knife - 2, wire cutting connecting plate - 8, wire hooking knife - 5, left slide plate - 6, right slide plate - 7, left guide rail - 20, right guide rail - 21, left slider - 22, right slider - 23, left connecting plate - 24, right connecting plate - 25, connection hole - 251. Detailed implementation manners

[0021] 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. Therefore, it should not be construed as a limitation to the present utility model.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "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.

[0023] 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 the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0024] As Figure 1-2A kind of step-type multi-needle machine thread cutting tool group shown in the figure includes a U-shaped bottom plate 1. A fixed cutter 2 is fixedly connected at the opening of the U-shaped bottom plate 1. A plurality of thread-hooking cutters 5 are fixedly connected to a thread cutting connecting plate 8. Each thread-hooking cutter 5 and the fixed cutter 2 form a shearing pair. The left and right ends of the thread cutting connecting plate 8 are respectively fixedly connected to the front ends of a left sliding plate 6 and a right sliding plate 7. Left guide rails 20 and right guide rails 21 are fixedly arranged on the U-shaped bottom plate 1. Left sliders 22 and right sliders 23 are respectively fitted on the left guide rails 20 and the right guide rails 21. A left connecting plate 24 is fixedly connected to the rear end of the left slider 22 and the left sliding plate 6. A right connecting plate 25 is fixedly connected to the rear end of the right slider 23 and the right sliding plate 7. Among them, the rear end of the right connecting plate 25 extends backward beyond the U-shaped bottom plate 1. A linear driving mechanism driven by a stepping motor is connected to the right connecting plate 25. There is 1 left slider 22 and 2 right sliders 23. Due to the cooperation between the guide rails and the sliders, the left pressing plate and the right pressing plate for limiting the left sliding plate 6 and the right sliding plate 7 in the prior art are abandoned. When the stepping motor drives the linear driving mechanism to move the right connecting plate 25, since the right connecting plate 25 is connected to the right slider 23 and the right sliding plate 7, this will cause the right sliding plate 7 to move along the right guide rail 21. Similarly, since the left connecting plate 24 is connected to the left slider 22 and the left sliding plate 6, the left sliding plate 6 will also move. The relative movement of the left sliding plate 6 and the right sliding plate 7 drives the thread-hooking cutter 5 on the thread cutting connecting plate 8 and the fixed cutter 2 to perform a shearing action. Through the precise control of the stepping motor, the timing and position of the thread cutting action can be precisely controlled, improving the thread cutting efficiency and quality.

[0025] In this embodiment, the linear driving mechanism not shown in the figure is a lead screw / nut mechanism. The motor shaft of the stepping motor is directly or indirectly connected to the lead screw, and the right connecting plate 25 is directly or indirectly connected to the nut. The motor shaft of the stepping motor is directly or indirectly connected to the lead screw through a transmission device (such as a coupling, a gear, etc.). The rotational movement of the stepping motor is transmitted to the lead screw through this connection. The lead screw is a long rod with a helical groove. When the stepping motor rotates, the lead screw rotates accordingly and pushes or pulls along its axis direction. The nut is a component that matches the helical groove of the lead screw. It can be directly or indirectly connected to the right connecting plate 25 through a connecting piece. When the lead screw rotates, the nut moves linearly in the helical groove of the lead screw. Since the nut is connected to the right connecting plate 25, the linear movement of the nut drives the right connecting plate 25 to move along the right guide rail 21. The lead screw / nut mechanism provides stable thrust and precise positioning, improving the stability and reliability of the thread cutting tool group. Compared with the pneumatic system, the electric lead screw / nut mechanism is more efficient in energy use, helping to reduce the long-term operating cost.

[0026] In another preferred embodiment, the linear driving mechanism can also be a crank / slider mechanism. The motor shaft of the stepping motor is directly or indirectly connected to the crankshaft, and the right connecting plate 25 is directly or indirectly connected to the slider. It provides high torque and power output. Suitable for high-speed operation and bearing large loads.

[0027] In another preferred embodiment, the linear drive mechanism can also be a gear / rack mechanism. The motor shaft of the stepper motor is directly or indirectly connected to the gear, and the right connecting plate 25 is directly or indirectly connected to the rack. It enables precise linear motion control with high repeat positioning accuracy. It has a compact structure and is suitable for applications with limited space.

[0028] In another preferred embodiment, the linear drive mechanism can also be a belt / slider mechanism. The motor shaft of the stepper motor is directly or indirectly connected to the pulley, and the right connecting plate 25 is directly or indirectly connected to the slider. The motion is stable, with low noise and simple maintenance. The speed and motion ratio can be easily adjusted.

[0029] In another preferred embodiment, the linear drive mechanism can also be a swing guide bar mechanism. The motor shaft of the stepper motor is directly or indirectly connected to the drive shaft, and the right connecting plate 25 is directly or indirectly connected to one end of the guide bar, with the other end of the guide bar fixed. It has a long stroke and is suitable for occasions that require a large motion range. The structure is simple and the cost is relatively low.

[0030] In another preferred embodiment, the linear drive mechanism can also be a cam / slide pin mechanism. The motor shaft of the stepper motor is directly or indirectly connected to the camshaft, and the right connecting plate 25 is directly or indirectly connected to the slide pin. Complex motion laws can be achieved according to the shape of the cam. It does not require a complex control system and has high motion reliability.

[0031] 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.

[0032] The parts not elaborated in the present invention are the prior art or common general knowledge in the art.

Claims

1. A step-type multi-needle machine thread cutting knife set, comprising a U-shaped bottom plate (1), a fixed knife (2) is fixedly connected at the opening of the U-shaped bottom plate (1), a plurality of thread-hooking knives (5) are fixedly connected to the thread cutting connecting plate (8), and each thread-hooking knife (5) forms a shearing pair with the fixed knife (2); the left and right ends of the thread cutting connecting plate (8) are respectively fixedly connected to the front ends of a left sliding plate (6) and a right sliding plate (7), and it is characterized in that, A left guide rail (20) and a right guide rail (21) are fixedly arranged on the U-shaped bottom plate (1). A left slider (22) and a right slider (23) are respectively fitted on the left guide rail (20) and the right guide rail (21). A left connecting plate (24) fixedly connects the left slider (22) and the rear end of the left sliding plate (6), and a right connecting plate (25) fixedly connects the right slider (23) and the rear end of the right sliding plate (7). The rear end of the right connecting plate (25) extends backward beyond the U-shaped bottom plate (1), and a linear drive mechanism driven by a stepping motor is connected to the right connecting plate (25).

2. The wire cutting knife set of a stepping multi-needle machine according to claim 1, characterized in that A connection hole (251) is formed at the rear end of the right connecting plate (25) for connecting the linear drive mechanism.

3. The wire cutting knife set of a stepping multi-needle machine according to claim 1, characterized in that, There is 1 left slider (22) and 2 right sliders (23).

4. A thread cutting knife set for a stepping multi-needle machine according to claim 1, characterized in that, Due to the cooperation between the guide rail and the slider, the left pressing plate and the right pressing plate for limiting the left sliding plate (6) and the right sliding plate (7) are abandoned.

5. The wire cutting tool set of a stepping multi-needle machine according to claim 1, characterized in that, The linear drive mechanism is a lead screw / nut mechanism. The motor shaft of the stepping motor is directly or indirectly connected to the lead screw, and the right connecting plate (25) is directly or indirectly connected to the nut.

6. The step type multi-needle machine thread cutting knife set according to claim 1, characterized in that The linear drive mechanism is a crank / slider mechanism. The motor shaft of the stepping motor is directly or indirectly connected to the crankshaft, and the right connecting plate (25) is directly or indirectly connected to the slider.

7. The wire cutting tool set of a stepping multi-needle machine according to claim 1, characterized in that, The linear drive mechanism is a gear / rack mechanism. The motor shaft of the stepping motor is directly or indirectly connected to the gear, and the right connecting plate (25) is directly or indirectly connected to the rack.

8. The wire cutting knife set of a stepping multi-needle machine according to claim 1, characterized in that, The linear drive mechanism is a belt / slider mechanism. The motor shaft of the stepping motor is directly or indirectly connected to the pulley, and the right connecting plate (25) is directly or indirectly connected to the slider.

9. The step multi-needle machine thread cutting knife set according to claim 1, characterized in that The linear drive mechanism is a swing guide bar mechanism. The motor shaft of the stepping motor is directly or indirectly connected to the drive shaft, and the right connecting plate (25) is directly or indirectly connected to one end of the guide bar, and the other end of the guide bar is fixed.

10. The wire cutting knife set of a stepping multi-needle machine according to claim 1, characterized in that, The linear drive mechanism is a cam / slide pin mechanism. The motor shaft of the stepping motor is directly or indirectly connected to the camshaft, and the right connecting plate (25) is directly or indirectly connected to the slide pin.

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