Punch mechanism of pearl threading machine

Abstract

The utility model discloses a punch mechanism of pearl nailing machine, including the organism, be provided with two punch needle frame on the organism, the thing platform is provided with between two punch needle frame of the organism, respectively be provided with the drive head and be used for driving the reduction motor of drive head along the height direction movement on two punch needle frame, the drive head on two punch needle frame sets up on the same axis, the reduction motor output shaft is matched with the drive cam, the drive cam edge rotation is provided with the gyro wheel bearing, be provided with the clamping groove on the drive shaft, the gyro wheel bearing sets up in the clamping groove. Its simple structure, drive stability, effectively improve the use reliability of structure, improve the use effect of structure.

Description

Technical Field

[0001] This utility model relates to a punch mechanism for a pearl-pinning machine. Background Technology

[0002] Pearl-attaching machines are used to attach pearl ornaments to bags and other items. Their working principles primarily involve ultrasonic waves (electronic circuits and transducers convert electrical energy into mechanical energy, causing the hot melt adhesive to melt and adhere the pearls to the bag fabric) and pneumatic cylinder pressing (using pneumatic cylinders to press the beads into place with four-pronged nails, with computer program control for automatic bead placement, nailing, and infrared positioning). They feature precise positioning (laser and infrared positioning ensure neatness and firmness), high efficiency and labor saving (riveting speed 8-10 times faster than manual labor), easy operation (foot pedal control, user-friendly interface, automatic device), wide applicability (can attach 4-12mm round and irregularly shaped beads, suitable for leather, fabric, and other materials), and diverse functions (counting, fault detection, adjustable riveting). However, existing punching mechanisms are not very stable and generate significant noise and energy consumption during long-term operation, impacting the economic efficiency of production. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a punch mechanism for a pearl-pinning machine, which has a simple structure, stable drive, and effectively improves the reliability and performance of the structure.

[0004] To achieve the above objectives, this utility model provides a punch mechanism for a pearl-pinning machine, comprising a body with two punch holders on it. A platform is provided between the two punch holders. Each punch holder is equipped with a drive head and a reduction motor for driving the drive head to move along the height direction. The drive heads on the two punch holders are arranged on the same axis. A drive cam is fitted on the output shaft of the reduction motor. A roller bearing is rotatably mounted on the edge of the drive cam. A clamping groove is provided on the drive head, and the roller bearing is disposed in the clamping groove.

[0005] The advantages of this design are as follows: the geared motor, as the core drive component, provides stable and powerful power output to the punch mechanism by reducing its speed and amplifying its torque. Compared to ordinary motors, its adjustable speed allows the lifting and lowering motion of the drive head to precisely match the requirements of the pearl-stitching process, avoiding excessive impact caused by excessive speed. This ensures that the punch can smoothly and accurately complete the pearl-stitching action in each movement. Existing structures typically use a belt pulley transmission method, which relies on the friction between the belt and the pulley to transmit power. This is prone to slippage, leading to inaccurate drive head movement and affecting pearl-stitching precision. The geared motor directly drives the drive cam, ensuring precise and stable power transmission, guaranteeing accurate punch movement in every step and significantly improving stitching quality. Belts, after long-term use, will loosen due to stretching and wear, requiring frequent tension adjustments. Furthermore, belts have a high risk of aging and breakage, which can interrupt production. The rigid transmission system composed of the geared motor, drive cam, and roller bearings does not have these problems, offering a compact and robust structure with high operational reliability. In addition, belts in belt-driven systems are wear parts, and replacement costs and maintenance workload are high. Gear motor drives, on the other hand, have the characteristics of low friction and low loss, which significantly reduces the frequency of equipment maintenance and lowers maintenance costs. They are also more suitable for the long-term, high-frequency production needs of pearl nailing, thus improving the production efficiency and economic benefits of enterprises.

[0006] As a further feature of this invention, the punch holder is also provided with a positioning frame, and a positioning seat is slidably provided on the positioning frame along the height direction. The positioning seat is provided with a positioning hole, and the drive head is disposed through the positioning hole.

[0007] The advantages of this design are as follows: With the positioning frame fixed to the punch holder and the positioning seat sliding along its height, the height can be flexibly adjusted to meet different pearl-studding requirements, adapting to various processing scenarios. The drive head passes through the positioning hole in the positioning seat; the hole and drive head fit tightly together, forming a guiding constraint that effectively limits radial offset during drive head movement, ensuring precise vertical movement of the punch. This structural design not only enhances overall stability but also improves the equipment's adaptability to diverse production tasks through flexible adjustment, reducing processing errors caused by punch wobbling.

[0008] As a further feature of this invention, the positioning seat has a limiting hole, a mold core is fitted into the limiting hole, the positioning hole is located on the mold core, a positioning step is provided between the mold core and the positioning seat, the positioning seat has an upper mold at the position of the limiting hole, the upper mold has a positioning boss that is engaged in the limiting hole, the positioning boss abuts against the positioning step, the upper mold has an upper mold hole, and the upper mold hole and the positioning hole are located on the same axis.

[0009] The beneficial effects of this design are as follows: With this configuration, the die core is embedded in the limiting hole of the positioning seat. The precisely machined positioning hole provides a high-precision guide channel for the drive head, ensuring the consistency of the punch's movement trajectory. The cooperation between the positioning step and the positioning boss forms a stable axial limiting structure, effectively preventing the die core from shifting vertically during the reciprocating motion of the drive head and maintaining positioning accuracy. The upper die is tightly integrated with the positioning seat through the positioning boss, not only enhancing the overall structural rigidity, but also creating a continuous and stable guide path by having its upper die hole coaxial with the die core positioning hole, reducing radial sway during drive head movement. This multi-positioning and layered constraint design controls the drive head's motion error to a very small range. Even in high-frequency, high-intensity pearl-pinning operations, it maintains stable punch operation, effectively avoiding quality problems such as misaligned or crooked pearl pinning caused by punch wobbling, significantly improving product qualification rate and equipment processing reliability.

[0010] As a further feature of this invention, at least two fastening holes are provided on the outer wall of the positioning seat, and a limiting screw for pressing the mold core into the limiting hole is provided in the fastening hole.

[0011] The advantages of this design are as follows: With at least two symmetrically distributed fastening holes on the outer wall of the positioning seat, after the limit screws are screwed in, pressure can be applied to the mold core from different angles, firmly pressing it into the limit holes. Even with prolonged high-frequency vibration of the equipment, it can prevent the mold core from loosening or shifting, ensuring that the positioning holes and the drive head always maintain a precise fit. This mechanical fastening method further enhances the stability of the overall structure, preventing punch misalignment due to mold core displacement, and effectively guaranteeing the accuracy and continuity of the pearl nailing process.

[0012] As a further feature of this invention, a guide groove and a guide protrusion are provided between the positioning frame and the punch frame, and the guide protrusion slides and engages with the guide groove.

[0013] The beneficial effects of this design are as follows: The sliding fit between the guide groove and the guide protrusion provides a stable foundation for adjusting the height of the positioning frame. The guide protrusion, embedded in the guide groove, forms a precise sliding guide structure, limiting lateral shift or wobbling of the positioning frame during adjustment and ensuring smooth movement only in the vertical direction. This close fit maintains structural stability even under frequent height adjustments, preventing instability during adjustment from affecting the accuracy of the punch movement, and providing a stable and reliable height adjustment guarantee for the assembly of pearls of different sizes. Attached Figure Description

[0014] Figure 1 This is a schematic diagram showing the installation position of the present invention in the device;

[0015] Figure 2This is a schematic diagram of the structure of an embodiment of the present utility model;

[0016] Figure 3 This is a rear view of an embodiment of the present utility model;

[0017] Figure 4 This is a cross-sectional structural diagram of an embodiment of the present utility model. Detailed Implementation

[0018] This utility model provides an embodiment of the punch mechanism of a pearl-pinning machine, such as... Figures 1 to 4 As shown, the device includes a body 1, on which two punch holders 2 are mounted. A platform is positioned between the two punch holders 2. Each punch holder 2 is equipped with a drive head 4 and a geared motor 3 for driving the drive head 4 along its height. The drive heads 4 on the two punch holders 2 are aligned on the same axis. A drive cam 31 is fitted onto the output shaft of the geared motor 3. A roller bearing 32 is rotatably mounted on the edge of the drive cam 31. A clamping groove is provided on the drive head, and the roller bearing 32 is positioned within the clamping groove. The advantages of this design are: the geared motor 3, as the core driving component, provides stable and powerful power output to the punch mechanism by reducing its speed and amplifying its torque. Compared to ordinary motors, its adjustable speed allows the lifting and lowering movement of the drive head 4 to precisely match the requirements of the pearl-studding process, avoiding excessive impact caused by excessive speed, thus ensuring that the punch completes the pearl-studding action smoothly and accurately in each movement. Existing structures typically employ belt-driven transmission, which relies on the friction between the belt and pulley to transmit power. This is prone to slippage, causing the drive head 4 to malfunction and affecting the precision of pearl stapling. In contrast, the geared motor 3 directly drives the drive cam 31, ensuring precise and stable power transmission. This guarantees accurate movement of the punch every time, significantly improving stapling quality. Belts, due to prolonged use, can loosen due to stretching and wear, requiring frequent tension adjustments. Furthermore, belt aging and breakage pose a high risk, disrupting production in the event of a malfunction. The rigid transmission system composed of the geared motor 3, drive cam 31, and roller bearing 32 eliminates these problems, offering a compact, robust structure and high operational reliability. Moreover, belts in belt-driven systems are wear parts, resulting in high replacement costs and maintenance workload. The geared motor 3, with its low friction and low loss characteristics, significantly reduces equipment maintenance frequency and costs, making it better suited for the long-term, high-frequency production demands of pearl stapling and improving production efficiency and economic benefits for enterprises.

[0019] As a further feature of this embodiment, a positioning frame 21 is also provided on the punch holder 2. A positioning seat 22 is slidably mounted on the positioning frame 21 along its height direction. The positioning seat 22 has a positioning hole, through which the drive head 4 passes. The advantages of this configuration are: the positioning frame 21 is fixed to the punch holder 2, and the positioning seat 22 slides along its height direction, allowing for flexible height adjustment according to different pearl-making requirements, adapting to various processing scenarios. The drive head 4 passes through the positioning hole of the positioning seat 22, and the hole and drive head 4 fit tightly together, forming a guiding constraint that effectively limits the radial offset of the drive head 4 during movement, ensuring precise vertical movement of the punch. This structural design not only enhances overall stability but also improves the equipment's adaptability to diverse production tasks through flexible adjustment, reducing processing errors caused by punch wobbling.

[0020] As a further feature of this embodiment, a limiting hole is provided in the positioning seat 22, and a mold core 23 is fitted into the limiting hole. The positioning hole is located on the mold core 23, and a positioning step is provided between the mold core 23 and the positioning seat 22. An upper mold 24 is provided on the positioning seat 22 at the position of the limiting hole. A positioning boss is provided on the upper mold 24 and is engaged in the limiting hole. The positioning boss abuts against the positioning step. An upper mold 24 hole is provided on the upper mold 24, and the upper mold 24 hole and the positioning hole are located on the same axis. The beneficial effect of this configuration is that the mold core 23 is embedded in the limiting hole of the positioning seat 22, and its precisely machined positioning hole provides a high-precision guide channel for the drive head 4, ensuring the consistency of the punch movement trajectory. The cooperation between the positioning step and the positioning boss forms a stable axial limiting structure, which can effectively prevent the mold core 23 from moving up and down during the reciprocating motion of the drive head 4, maintaining positioning accuracy. The upper die 24 is tightly integrated with the positioning seat 22 via a positioning boss, which not only enhances the overall structural rigidity, but also creates a continuous and stable guide path by having its upper die 24 holes coaxially aligned with the positioning holes of the die core 23, reducing radial sway during the movement of the drive head 4. This multi-positioning and layered constraint design keeps the motion error of the drive head 4 within a very small range, ensuring stable operation of the punch even during high-frequency, high-intensity pearl-pinning operations. This effectively avoids quality problems such as misaligned or crooked pearl pinning caused by punch wobbling, significantly improving product qualification rate and equipment processing reliability.

[0021] As a further feature of this embodiment, at least two fastening holes are provided on the outer wall of the positioning seat 22, and limiting screws for pressing the mold core 23 into the limiting hole are provided in the fastening holes. The beneficial effect of this arrangement is that, with at least two fastening holes symmetrically distributed on the outer wall of the positioning seat 22, after the limiting screws are screwed in, pressure can be applied to the mold core 23 from different angles, firmly pressing it into the limiting hole. Even with prolonged high-frequency vibration of the equipment, the mold core 23 can be prevented from loosening or shifting, ensuring that the positioning hole and the drive head 4 always maintain precise fit. This mechanical fastening method further enhances the stability of the overall structure, avoids punch displacement due to mold core 23 displacement, and effectively ensures the accuracy and continuity of the pearl nailing process.

[0022] As a further feature of this embodiment, a guide groove and a guide protrusion are provided between the positioning frame 21 and the punch frame 2, with the guide protrusion slidingly engaging with the guide groove. The beneficial effect of this design is that the sliding engagement of the guide groove and guide protrusion provides a stable foundation for the height adjustment of the positioning frame 21. The guide protrusion, embedded in the guide groove, forms a precise sliding guide structure, limiting lateral displacement or wobbling of the positioning frame 21 during adjustment and ensuring that it can only move smoothly along the height direction. This close fit maintains structural stability even under frequent height adjustments, preventing instability during adjustment from affecting the accuracy of the punch movement, and providing a stable and reliable height adjustment guarantee for the stapling of pearls of different specifications.

[0023] The above examples are merely one preferred embodiment of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution are all included within the protection scope of this utility model.

Claims

1. A punch mechanism for a pearl-pinning machine, comprising a body, wherein two punch holders are disposed on the body, and a storage platform is disposed between the two punch holders, characterized in that: Two punch holders are respectively equipped with a drive head and a geared motor for driving the drive head to move along the height direction. The drive heads on the two punch holders are arranged on the same axis. A drive cam is fitted on the output shaft of the geared motor. A roller bearing is rotatably provided on the edge of the drive cam. A clamping groove is provided on the drive head, and the roller bearing is arranged in the clamping groove.

2. The punch mechanism of the pearl-pinning machine according to claim 1, characterized in that: The punch holder is also provided with a positioning frame, and a positioning seat is slidably provided on the positioning frame along the height direction. The positioning seat is provided with a positioning hole, and the drive head is provided through the positioning hole.

3. The punch mechanism of the pearl-pinning machine according to claim 2, characterized in that: The positioning seat has a limiting hole, and a mold core fits into the limiting hole. The positioning hole is set on the mold core, and a positioning step is set between the mold core and the positioning seat. The positioning seat has an upper mold at the position of the limiting hole. The upper mold has a positioning boss that is locked in the limiting hole. The positioning boss abuts against the positioning step. The upper mold has an upper mold hole, and the upper mold hole and the positioning hole are set on the same axis.

4. The punch mechanism of the pearl-pinning machine according to claim 3, characterized in that: The outer wall of the positioning seat is provided with at least two fastening holes, and the fastening holes are provided with limiting screws for pressing the mold core into the limiting hole.

5. The punch mechanism of the pearl-pinning machine according to claim 2, characterized in that: A guide groove and a guide protrusion are provided between the positioning frame and the punch frame, and the guide protrusion slides and engages with the guide groove.

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