A transmission structure and transmission system for the lower shaft of an embroidery machine

Abstract

A transmission structure for embroidery machine lower shaft, including lower shaft assembly and several shuttle boxes connected to the lower shaft assembly; the lower shaft assembly is provided with a synchronous pulley rotating synchronously with the lower shaft assembly, and the synchronous pulley is connected with a driving assembly for driving the synchronous pulley to rotate; several said shuttle boxes are arranged in an interval type row, and the synchronous pulley is located between the adjacent two shuttle boxes; the shuttle box is provided with a rotating shuttle, and the lower shaft assembly is provided with a transmission assembly for controlling the synchronous operation of the rotating shuttles in the several shuttle boxes; compared with the prior art, by arranging the several shuttle boxes in an interval type, and installing the synchronous pulley for driving the lower shaft assembly at the interval of the adjacent shuttle boxes, the installation of the synchronous pulley does not need to change the existing shuttle box structure, and during the maintenance or installation of the shuttle box, no additional operation is needed, the installation flexibility is enhanced, the installation efficiency and the maintenance convenience are improved.

Description

Technical Field

[0001] This utility model relates to the field of embroidery machine technology, specifically to a transmission structure and transmission system for the lower shaft of an embroidery machine. Background Technology

[0002] Embroidery machines, as a special type of equipment for embroidering on a single piece of fabric, can use silk threads of different materials and colors to embroider various patterns and texts on the fabric. When inlaying ornaments, a more efficient and stable mechanical mechanism must be considered.

[0003] Embroidery machines are complex mechanical devices that integrate upper and lower shafts, frames, control systems, transmission systems, thread frames, tables, and rotary hooks. The transmission system is a crucial component, as it handles the overall power output of the machine. Traditional transmission systems typically use the upper shaft power system to drive the upper shaft, which then transmits power to the lower shaft through single or double upper and lower shaft transmission boxes. This enables the needle and rotary hook to work together, and in conjunction with the frame, the machine can embroider fabric.

[0004] Driven by market demand, longer and wider products, denser patterns, and more beautiful embroidery have become the standards for evaluating the quality of embroidery equipment in the embroidery industry. At the same time, models with more machine heads, more lower shaft shuttles, and longer machine lengths have emerged. This has brought considerable challenges to the load and synchronization of the upper and lower shafts, and has also increased the difficulty of power distribution.

[0005] Chinese patent CN117026533A discloses a transmission system for an embroidery machine and an embroidery machine, including: a lower shaft with a driven gear fixedly connected to it; a transmission shaft located on one side of the lower shaft and connected to a first rotating motor that provides drive to it, and a transmission assembly between the transmission shaft and the driven gear for transmitting the rotation of the transmission shaft to the driven gear.

[0006] In the aforementioned transmission system, the drive shaft and the lower shaft are arranged parallel to each other, and the connection between the drive shaft and the lower shaft is located on the side wall of the shuttle box. This requires additional openings in the side wall of the shuttle box. Furthermore, when the shuttle box needs maintenance or repair, the shuttle box and the drive shaft need to be disassembled separately, which is time-consuming and labor-intensive. Utility Model Content

[0007] The present invention aims to overcome the defects in the prior art and provide a transmission structure and transmission system for the lower shaft of an embroidery machine that is easy to assemble and disassemble and provides stable power output.

[0008] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a transmission structure for the lower shaft of an embroidery machine, comprising a lower shaft assembly and a plurality of shuttle boxes connected to the lower shaft assembly; the lower shaft assembly is provided with a synchronous pulley that rotates synchronously with the lower shaft assembly, and the synchronous pulley is connected to a drive assembly for driving the synchronous pulley to rotate; the plurality of shuttle boxes are arranged in a row at intervals, and the synchronous pulley is located between two adjacent shuttle boxes; a rotary shuttle is provided in the shuttle box, and the lower shaft assembly is provided with a transmission assembly for controlling the synchronous operation of the rotary shuttles in the plurality of shuttle boxes.

[0009] As a preferred embodiment of the present invention, the lower shaft assembly is composed of several lower shaft bodies connected together, and a connecting sleeve for driving the two adjacent lower shaft bodies to rotate synchronously is provided between two adjacent lower shaft bodies.

[0010] As a preferred embodiment of this utility model, the connecting sleeve is simultaneously fitted onto the ends of two adjacent lower shaft bodies, and the connecting sleeve has a connecting hole for connecting with the lower shaft body.

[0011] As a preferred embodiment of this utility model, the shuttle box is provided with a single lower shaft body, and the connecting sleeve is located between two adjacent shuttle boxes.

[0012] As a preferred embodiment of the present invention, the transmission assembly includes a first transmission gear and a second transmission gear that mesh with each other. The first transmission gear is sleeved on the lower shaft assembly and rotates synchronously with the lower shaft assembly. The rotary hook is connected to the output end of the second transmission gear.

[0013] In a preferred embodiment of this utility model, both the first transmission gear and the second transmission gear are located inside the shuttle box.

[0014] As a preferred embodiment of the present invention, the drive assembly includes a motor frame and an adapter shaft mounted on the motor frame. A transmission belt connected to the adapter shaft is provided on the synchronous pulley, and a drive motor for driving the adapter shaft to rotate is mounted on the motor frame.

[0015] As a preferred embodiment of this utility model, the output end of the drive motor is provided with a drive belt for driving the adapter shaft to rotate, and the adapter shaft is provided with an adapter pulley connected to the drive belt and a transmission pulley connected to the transmission belt.

[0016] As a preferred embodiment of this utility model, the motor frame is provided with a bearing seat for supporting the rotation of the adapter shaft.

[0017] A transmission system for a transmission structure of a lower shaft of an embroidery machine, based on a transmission structure for a lower shaft of an embroidery machine, wherein the two ends of the adapter shaft are provided with auxiliary shafts that rotate synchronously with the adapter shaft, the auxiliary shafts extend outside the motor frame, and the auxiliary shafts are provided with a plurality of support seats for supporting the auxiliary shafts; the auxiliary shafts are provided with auxiliary frames for connecting transmission belts, and the auxiliary frames are provided with bearing seats connected to the auxiliary shafts.

[0018] Compared with the existing technology, by arranging several shuttle boxes at intervals and installing the synchronous pulleys for driving the lower shaft assembly at the intervals between adjacent shuttle boxes, the installation of the synchronous pulleys does not require any changes to the existing shuttle box structure. At the same time, no additional operations are required during the inspection or installation of the shuttle boxes, which enhances the installation flexibility, improves the installation efficiency and maintenance convenience. The lower shaft assembly is independently controlled by a drive motor, providing stable power output, improving embroidery quality, dispersing pressure on the upper shaft, and enhancing the overall stability of the equipment; The rotation of the lower shaft assembly is driven by the transmission belt and synchronous pulley, which improves the stability of the power output of the lower shaft assembly. Furthermore, based on the structure of the lower shaft assembly, an auxiliary shaft drive is added, which can realize the stable output of the lower shaft assembly by multiple transmission belts and improve the structural life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram showing the connection between the lower shaft assembly and the shuttle box; Figure 3 This is a schematic diagram of the transmission assembly. Figure 4 This is a schematic diagram of the transmission system; Reference numerals: lower shaft assembly 1, lower shaft body 11, connecting sleeve 12, connecting hole 13, synchronous pulley 14, shuttle box 2, rotary shuttle 21, drive assembly 3, motor frame 31, adapter shaft 32, drive motor 33, transmission pulley 34, bearing seat 35, adapter pulley 36, transmission assembly 4, first transmission gear 41, second transmission gear 42, transmission belt 5, drive belt 6, auxiliary shaft 7, support seat 8, auxiliary frame 9. Detailed Implementation

[0020] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] like Figures 1-4As shown, a transmission structure for the lower shaft of an embroidery machine includes a lower shaft assembly 1 and a plurality of shuttle boxes 2 connected to the lower shaft assembly 1; the lower shaft assembly 1 is provided with a synchronous pulley 14 that rotates synchronously with the lower shaft assembly 1, and the synchronous pulley 14 is connected to a drive assembly 3 for driving the synchronous pulley 14 to rotate; the plurality of shuttle boxes 2 are arranged in a row at intervals, and the synchronous pulley 14 is located between two adjacent shuttle boxes 2; a rotary shuttle 21 is provided in the shuttle box 2, and the lower shaft assembly 1 is provided with a transmission assembly 4 for controlling the synchronous operation of the rotary shuttles 21 in the plurality of shuttle boxes 2.

[0022] The number of shuttle boxes 2 is set according to actual needs. Under the action of the same lower shaft assembly 1, several shuttle boxes 2 are driven to operate in unison. The lower shaft assembly 1 drives the rotation of the entire lower shaft assembly 1 through the rotation of the synchronous pulley 14, thereby realizing the operation of the rotary shuttle 21 in each shuttle box 2 through several transmission components 4 on the lower shaft assembly 1.

[0023] The lower shaft assembly 1 is composed of several lower shaft bodies 11 connected together. A connecting sleeve 12 is provided between two adjacent lower shaft bodies 11 to drive the two adjacent lower shaft bodies 11 to rotate synchronously. The number of lower shaft bodies 11 is set according to the actual required length of the lower shaft assembly 1. The connection of the lower shaft bodies 11 is located between the shuttle boxes 2.

[0024] The shuttle box 2 is provided with a single lower shaft body 11. The connecting sleeve 12 is simultaneously sleeved on the ends of two adjacent lower shaft bodies 11. The connecting sleeve 12 has a connecting hole 13 that connects to the lower shaft body 11. The connecting sleeve 12 is located between two adjacent shuttle boxes 2. After removing the two connecting sleeves 12 on both sides of the shuttle box 2, the lower shaft body 11 and the corresponding shuttle box 2 can be removed simultaneously on the transmission structure.

[0025] During installation, by sequentially connecting the lower shaft body 11 and the connecting sleeve 12, the installation of the entire lower shaft assembly 1 can be achieved. In subsequent disassembly and maintenance, the connection between the connecting sleeve 12 and the lower shaft body 11 can be disassembled to achieve quick disassembly of the corresponding shuttle box 2, thus meeting the needs for quick maintenance of the shuttle box 2.

[0026] The connecting sleeve 12 is used to connect two adjacent lower shaft bodies 11. Under the action of the connecting sleeve 12, the two adjacent ends of the two lower shaft bodies 11 located on the same straight line and with a gap between them are sleeved together. Under the action of the connecting hole 13, fasteners connecting the lower shaft bodies 11 are set in the connecting hole 13, thereby connecting two adjacent lower shaft bodies 11 to the same connecting sleeve 12. When one of the lower shaft bodies 11 rotates, the rotation is transmitted to the adjacent lower shaft bodies 11 through the connecting sleeve 12, thereby achieving synchronous rotation of all lower shaft bodies 11 under the action of multiple connecting sleeves 12.

[0027] The transmission assembly 4 includes a first transmission gear 41 and a second transmission gear 42 that mesh with each other. The first transmission gear 41 is sleeved on the lower shaft assembly 1 and rotates synchronously with the lower shaft assembly 1. The rotary shuttle 21 is connected to the output end of the second transmission gear 42.

[0028] Both the first transmission gear 41 and the second transmission gear 42 are bevel gears. The first transmission gear 41 is connected to the lower shaft assembly 1 by a key and a keyway, so that the rotation of the lower shaft assembly 1 drives the first transmission gear 41 to rotate synchronously. Under the action of meshing, the rotation of the first transmission gear 41 drives the second transmission gear 42 to rotate synchronously, thereby driving the rotation of the rotary hook 21.

[0029] Both the first transmission gear 41 and the second transmission gear 42 are located inside the shuttle box 2. Therefore, the first transmission gear 41 is connected to the middle of the lower shaft body 11 and does not affect the connection between adjacent lower shaft bodies 11.

[0030] The drive assembly 3 includes a motor frame 31 and a transfer shaft 32 mounted on the motor frame 31. A transmission belt 5 connected to the transfer shaft 32 is provided on the synchronous pulley 14, and a drive motor 33 for driving the transfer shaft 32 to rotate is mounted on the motor frame 31.

[0031] The drive motor 33 drives the transmission belt 5 synchronously by driving the rotation of the adapter shaft 32, thereby driving the rotation of the synchronous pulley 14 and the lower shaft assembly 1.

[0032] The output end of the drive motor 33 is provided with a drive belt 6 for driving the adapter shaft 32 to rotate, and the adapter shaft 32 is provided with an adapter pulley 36 connected to the drive belt 6 and a transmission pulley 34 connected to the transmission belt 5. The motor frame 31 is provided with a bearing seat 35 for supporting the rotation of the adapter shaft 32.

[0033] The drive motor 33 drives the adapter shaft 32 to rotate via the drive belt 6. Under the action of the transmission pulley 34 and the adapter pulley 36, the output ratio between the drive belt 6 and the transmission belt 5 can be adjusted by adjusting the size between the transmission pulley 34 and the adapter pulley 36.

[0034] A transmission system for a transmission structure of a lower shaft of an embroidery machine, based on a transmission structure for a lower shaft of an embroidery machine, wherein the adapter shaft 32 is provided with auxiliary shafts 7 at both ends that rotate synchronously with the adapter shaft 32, the auxiliary shafts 7 extend outside the motor frame 31, and the auxiliary shafts 7 are provided with a plurality of support seats 8 for supporting the auxiliary shafts 7; the auxiliary shafts 7 are provided with auxiliary frames 9 for connecting transmission belts 5, and the auxiliary frames 9 are provided with bearing seats 35 connected to the auxiliary shafts 7.

[0035] The number of support seats 8 is set according to actual needs. The support seats 8 are installed in the frame to support the auxiliary shaft 7. The number of auxiliary frames 9 is also set according to actual needs. Under the action of multiple auxiliary frames 9, the lower shaft assembly 1 can be driven to rotate in multiple places by the synchronously rotating transmission belts 5.

[0036] In actual use, the drive motor 33 starts working after receiving the same motor start signal as the upper shaft. Under the action of the drive motor 33, the drive belt 6 is driven to transmit power. The drive belt 6 transmits power to the adapter pulley 36 and the transmission pulley 34 through a certain ratio, and then transmits the power to the synchronous pulley 14 through the transmission belt 5, realizing the power transmission to the lower shaft body 11. Until the conversion of the first transmission gear 41 and the second transmission gear 42, the power drives the rotary hook 21 to rotate. Under the action of the same lower shaft assembly 1, the rotation angle of the rotary hook 21 is basically consistent with the angle and speed of the rotary hook 21 at both ends.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0038] Although this document frequently uses reference numerals from the accompanying drawings, such as lower shaft assembly 1, lower shaft body 11, connecting sleeve 12, connecting hole 13, synchronous pulley 14, shuttle box 2, rotary shuttle 21, drive assembly 3, motor frame 31, adapter shaft 32, drive motor 33, transmission pulley 34, bearing seat 35, adapter pulley 36, transmission assembly 4, first transmission gear 41, second transmission gear 42, transmission belt 5, drive belt 6, auxiliary shaft 7, support seat 8, and auxiliary frame 9, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A transmission structure for the lower shaft of an embroidery machine, comprising a lower shaft assembly (1) and a plurality of shuttle boxes (2) connected to the lower shaft assembly (1); characterized in that, The lower shaft assembly (1) is provided with a synchronous pulley (14) that rotates synchronously with the lower shaft assembly (1), and the synchronous pulley (14) is connected to a drive assembly (3) for driving the synchronous pulley (14) to rotate; a number of shuttle boxes (2) are arranged in a row at intervals, and the synchronous pulley (14) is located between two adjacent shuttle boxes (2); a rotary shuttle (21) is provided in the shuttle box (2), and the lower shaft assembly (1) is provided with a transmission assembly (4) for controlling the synchronous operation of the rotary shuttle (21) in the several shuttle boxes (2).

2. The transmission structure for the lower shaft of an embroidery machine according to claim 1, characterized in that, The lower shaft assembly (1) is composed of several lower shaft bodies (11) connected together, and a connecting sleeve (12) is provided between two adjacent lower shaft bodies (11) for driving the two adjacent lower shaft bodies (11) to rotate synchronously.

3. The transmission structure for the lower shaft of an embroidery machine according to claim 2, characterized in that, The connecting sleeve (12) is simultaneously sleeved on the ends of two adjacent lower shaft bodies (11), and the connecting sleeve (12) has a connecting hole (13) that connects to the lower shaft body (11).

4. The transmission structure for the lower shaft of an embroidery machine according to claim 2, characterized in that, The shuttle box (2) is provided with a single lower shaft body (11), and the connecting sleeve (12) is located between two adjacent shuttle boxes (2).

5. The transmission structure for the lower shaft of an embroidery machine according to claim 1, characterized in that, The transmission assembly (4) includes a first transmission gear (41) and a second transmission gear (42) meshing with each other. The first transmission gear (41) is sleeved on the lower shaft assembly (1) and rotates synchronously with the lower shaft assembly (1). The rotary hook (21) is connected to the output end of the second transmission gear (42).

6. The transmission structure for the lower shaft of an embroidery machine according to claim 5, characterized in that, The first transmission gear (41) and the second transmission gear (42) are both located inside the shuttle box (2).

7. The transmission structure for the lower shaft of an embroidery machine according to claim 1, characterized in that, The drive assembly (3) includes a motor frame (31) and a transfer shaft (32) mounted on the motor frame (31). A transmission belt (5) connected to the transfer shaft (32) is provided on the synchronous pulley (14), and a drive motor (33) for driving the transfer shaft (32) to rotate is mounted on the motor frame (31).

8. The transmission structure for the lower shaft of an embroidery machine according to claim 7, characterized in that, The output end of the drive motor (33) is provided with a drive belt (6) for driving the adapter shaft (32) to rotate, and the adapter shaft (32) is provided with an adapter pulley (36) connected to the drive belt (6) and a transmission pulley (34) connected to the transmission belt (5).

9. A transmission structure for the lower shaft of an embroidery machine according to claim 7, characterized in that, The motor frame (31) is provided with a bearing seat (35) for supporting the rotation of the adapter shaft (32).

10. A transmission system for a transmission structure of a lower shaft of an embroidery machine, based on the transmission structure for a lower shaft of an embroidery machine as described in any one of claims 1-9, characterized in that, The adapter shaft (32) has auxiliary shafts (7) at both ends that rotate synchronously with the adapter shaft (32). The auxiliary shafts (7) extend outside the motor frame (31) and are provided with several support seats (8) for supporting the auxiliary shafts (7). The auxiliary shafts (7) are provided with auxiliary frames (9) for connecting the transmission belt (5), and the auxiliary frames (9) are provided with bearing seats (35) connected to the auxiliary shafts (7).

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