A lockstitch machine drive structure

Abstract

This utility model discloses a transmission structure for a lockstitch machine. The transmission structure includes a lockstitch machine body, wherein the machine body comprises a pair of driving and driven bodies, movably connected together by an opening / closing handle. A reduction gearbox is located at the upper end of the driving body, and a speed-changing transmission assembly is housed within the reduction gearbox. Gear transmission assemblies are located within both the driving and driven bodies. A guide wheel assembly is located at the bottom of the driving body, and a forming wheel assembly corresponding to the guide wheel assembly is located at the bottom of the driven body. The lower output end of the speed-changing transmission assembly is connected to the guide wheel assembly and the forming wheel assembly respectively via the gear transmission assembly. The upper input end of the reduction gearbox is connected to the output shaft of a drive component. This utility model facilitates the adjustment of speed and torque, reduces noise, and promotes stable machine operation.

Description

Technical Field

[0001] This utility model relates to the field of building roofing engineering technology, and in particular to a lockstitch machine transmission structure that is conducive to meeting the adjustment requirements of rotation speed and torque, reducing noise and facilitating stable operation of the machine body. Background Technology

[0002] In recent years, more and more enterprises and individuals have begun to use metal roofs in various building projects. Metal roofs have good plasticity and can adapt to various complex roof shapes. In addition, metal roofs offer freedom in form and a wide selection of colors and textures for the panels. Different metal materials and construction methods can be selected according to different architectural styles and creative needs, maximizing the satisfaction of architectural creative needs. However, the interlocking gaps between the steel panels of a metal roof are prone to leakage problems. Therefore, the interlocking seams of the roof are extremely important for the waterproofing, wind resistance, and aesthetics of the roof.

[0003] Currently, most metal roofing seam sealing machines on the market use four sets of wheels for seam rolling and forming. When the seam sealing machine rolls and forms the seam onto the fixed base of the metal roof, the increased material and thickness of the roof raw material result in significant variations in the seam locking force. Ordinary metal roofing seam sealing machines are prone to not moving during seam sealing due to insufficient output torque. The seam sealing wheels are also prone to slipping on the roof seam ribs, reducing equipment stability, damaging the galvanized anti-corrosion layer of the roof, and failing to effectively handle roof seams. The patented technology, "Automatic Seam Seam for Metal Roofs," addresses this issue. Chinese utility model patent ZL201020265498.1, published on January 26, 2011, describes a motor connected to a central shaft via a continuously variable transmission (CVT). Several pairs of transmission shafts are connected to both sides of the central shaft via worm gears. The transmission shafts are arranged in two rows on both sides of the central shaft. One row of transmission shafts has movable rollers installed on it, and the other row has fixed rollers installed on it. There is a certain distance between the fixed rollers and the movable rollers. An adjustable connecting rod connects the two rows of transmission shafts to adjust the distance between them. However, while this patent uses a worm gear connection to transmit motor output to the movable and fixed rollers, which satisfies the roof seam locking requirements to some extent, the multi-link mechanism makes it complex to manufacture, increases maintenance costs, and makes replacement and repair more troublesome. Furthermore, the connection points of the connecting rods are prone to wear, which may lead to loosening during use, potentially resulting in incomplete or substandard seams and poor seam locking performance.

[0004] How to solve the above problems has become an urgent technical issue. Utility Model Content

[0005] The purpose of this invention is to provide a transmission structure for a lockstitch machine that is conducive to meeting the needs of speed and torque adjustment, reducing noise, and facilitating stable operation of the machine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a transmission structure for a lockstitch machine, including a lockstitch machine body. The lockstitch machine body includes a pair of driving and driven bodies, which are movably connected together by an opening and closing handle. A reduction gearbox is provided at the upper end of the driving body, and a speed-changing transmission assembly is provided inside the reduction gearbox. A gear transmission assembly is provided inside both the driving and driven bodies. A guide wheel assembly is provided at the bottom of the driving body, and a forming wheel assembly that can cooperate with the guide wheel assembly is provided at the bottom of the driven body. The lower output end of the speed-changing transmission assembly is connected to the guide wheel assembly and the forming wheel assembly respectively via the gear transmission assembly. The upper input end of the reduction gearbox is connected to the output shaft of a drive component.

[0008] Furthermore, the gear transmission assembly includes a connecting gear, a transition gear set, a guide gear set, and a forming gear set capable of meshing with the guide gear set. The guide gear set is disposed on the driving body along its length, and the forming gear set is disposed on the driven body along its length. The connecting gear is disposed in the middle of the driving body and meshes with the guide gear set. The lower output end of the transmission assembly is connected to the connecting gear. The transition gear set is disposed within the guide gear set and the forming gear set, respectively. The guide gear set and the forming gear set are connected to the guide gear set and the forming gear set via a connecting shaft, which is disposed on the driving body and the driven body via bearings.

[0009] Further, the transition gear set includes a first transition gear and a second transition gear, and the guide gear set includes a first guide gear, a second guide gear, a third guide gear, and a fourth guide gear. The first guide gear, the second guide gear, the third guide gear, and the fourth guide gear are arranged along the length direction of the driving body on the driving body. The first guide gear meshes with the second guide gear via the first transition gear, the third guide gear meshes with the fourth guide gear via the second transition gear, and the second guide gear meshes with the third guide gear via the connecting gear. The first guide gear, the second guide gear, the third guide gear, and the fourth guide gear are respectively connected to the guide gear set via the connecting shaft.

[0010] Furthermore, the transition gear set further includes a third transition gear and a fourth transition gear, and the forming gear set includes a first forming gear, a second forming gear, a third forming gear, and a fourth forming gear capable of meshing with the first guide gear, the second guide gear, the third guide gear, and the fourth guide gear. The first forming gear, the second forming gear, the third forming gear, and the fourth forming gear are arranged along the length direction of the driven body on the driven body. The first forming gear meshes with the second forming gear via the third transition gear, and the third forming gear meshes with the fourth forming gear via the fourth transition gear. The first forming gear, the second forming gear, the third forming gear, and the fourth forming gear are respectively connected to the forming gear set via the connecting shaft.

[0011] Furthermore, the guide wheel assembly includes a first guide wheel, a second guide wheel, a third guide wheel, and a fourth guide wheel that can be connected to the first guide wheel gear, the second guide wheel gear, the third guide wheel gear, and the fourth guide wheel gear respectively via the connecting shaft, and the forming wheel assembly includes a first forming wheel, a second forming wheel, a third forming wheel, and a fourth forming wheel that can be connected to the first forming wheel gear, the second forming wheel gear, the third forming wheel gear, and the fourth forming wheel gear respectively via the connecting shaft.

[0012] Furthermore, the gearbox includes a lower housing, which is connected to the upper end face of the drive body. A positioning plate is connected to the upper end of the lower housing, and an upper housing is connected to the positioning plate. A motor mounting base is connected to the upper housing. The driving component is a drive motor, which is connected to the upper end face of the motor mounting base.

[0013] Furthermore, the transmission assembly includes a first upper gear capable of meshing with the output shaft of the drive motor. The first upper gear is connected to the upper end of a first reduction shaft. A first lower gear is connected to the lower end of the first reduction shaft. The first lower gear meshes with a second lower gear. The second lower gear is connected to the lower end of a second reduction shaft. A second upper gear is connected to the upper end of the second reduction shaft. The second upper gear meshes with a third upper gear. The third upper gear is connected to the upper end of a third reduction shaft. The lower end of the third reduction shaft is connected to the connecting gear. The first upper gear, the first reduction shaft, the first lower gear, the second lower gear, the second reduction shaft, the second upper gear, the third upper gear, and the third reduction shaft combine to form a dual-combination transmission structure.

[0014] Furthermore, the upper end of the first reduction shaft is movably connected to the motor mounting base via a bearing through the upper end of the upper housing, the lower end of the first reduction shaft is movably connected to the lower housing via a bearing through the positioning plate, the upper end of the second reduction shaft is movably connected to the positioning plate via a bearing, the lower end of the second reduction shaft is movably connected to the lower housing via a bearing, the upper end of the third reduction shaft is movably connected to the positioning plate via a bearing, and the lower end of the third reduction shaft is movably connected to the drive body via a bearing.

[0015] Furthermore, the opening and closing handle includes an opening and closing shaft and an adjusting handle, wherein the front end of the opening and closing shaft is connected to the driving body via the driven body, and the rear end of the opening and closing shaft is connected to the adjusting handle via a locking cam.

[0016] Due to the adoption of the above structure, the beneficial effects of this utility model are as follows:

[0017] This utility model discloses a transmission structure for a lockstitching machine. The power provided by the drive component via the output shaft is transmitted to a gear transmission component through a speed-changing transmission assembly. The gear transmission component then drives the guide wheel assembly and the forming wheel assembly. This allows the speed-changing transmission assembly to alter and stabilize the output torque and speed provided by the drive component, enabling the gear transmission component to more stably transmit power to the guide wheel assembly and the forming wheel assembly. This ensures stable operation of the guide wheel assembly and the forming wheel assembly, improving the stability of the equipment during operation. The combination of the speed-changing transmission assembly and the gear transmission assembly forms a multi-stage gear series structure, achieving a large overall transmission ratio. This meets the requirements for precise adjustment of speed and torque, has high load-bearing capacity, and the gear transmission assembly provides smooth meshing and a compact structure, which helps reduce noise and machine vibration. The size of the driving and driven bodies is not excessively bulky, making it particularly suitable for roof lockstitching equipment. Therefore, this utility model's lockstitching machine transmission structure effectively meets the requirements for speed and torque adjustment, reduces noise, and promotes stable machine operation.

[0018] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the transmission structure of a lockstitch machine according to the present invention;

[0021] Figure 2 This is a cross-sectional view of the active mechanism in this utility model;

[0022] Figure 3 This is a schematic diagram showing the connection between the speed transmission assembly and the gear transmission assembly in this utility model;

[0023] Figure 4 This is a cross-sectional view of the driven body in this utility model;

[0024] Figure 5 This is a bottom view of the transmission structure of a lockstitch machine according to the present invention;

[0025] Figure 6 for Figure 5 A schematic diagram of the structure after the intermediate gear set and the forming gear set mesh; and...

[0026] Figure 7 This is a schematic diagram of the assembly of the drive motor, the gearbox, and the active mechanism in this utility model. Detailed Implementation

[0027] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please refer to Figure 1-7This utility model provides a transmission structure for a lockstitch machine, including a lockstitch machine body 1. The machine body 1 comprises a pair of driving bodies 11 and driven bodies 12, movably connected together via an opening / closing handle 13. A reduction gearbox 4 is located at the upper end of the driving body 11, and a speed-changing transmission assembly 5 is located within the reduction gearbox 4. A gear transmission assembly 6 is located within both the driving body 11 and the driven body 12. A guide wheel assembly 2 is located at the bottom of the driving body 11, and a forming wheel assembly 3, capable of cooperating with the guide wheel assembly 2, is correspondingly located at the bottom of the driven body 12. The lower output end of the speed-changing transmission assembly 5 is connected to the guide wheel assembly 2 and the forming wheel assembly 3 respectively via the gear transmission assembly 6. The upper input end of the reduction gearbox 4 is connected to the output shaft of a driving component. The power provided by the output shaft is transmitted to the gear transmission assembly 6 via the speed change transmission assembly 5. The gear transmission assembly 6 then drives the guide wheel assembly 2 and the forming wheel assembly 3. The speed change transmission assembly 5 can change and stabilize the output torque and speed provided by the drive components, allowing the gear transmission assembly 6 to transmit power to the guide wheel assembly 2 and the forming wheel assembly 3 more stably. This ensures the stable operation of the guide wheel assembly 2 and the forming wheel assembly 3 and improves the stability of the equipment during operation. The combination of the speed change transmission assembly 5 and the gear transmission assembly 6 forms a multi-stage gear series structure, which can achieve a large overall transmission ratio, meet the requirements for precise adjustment of speed and torque, and has a high load-bearing capacity. Moreover, the gear transmission assembly 6 has smooth meshing and a compact structure, which helps to reduce noise and reduce machine vibration. The machine body is not too bulky, making it particularly suitable for roof seam locking equipment.

[0029] In this invention, the gear transmission assembly 6 includes a connecting gear 61, an intermediate gear set 62, a guide gear set 63, and a forming gear set 64 that meshes with the guide gear set 63. The guide gear set 63 is disposed along the length of the driving body 11, and the forming gear set 64 is disposed along the length of the driven body 12. The connecting gear 61 is disposed in the middle of the driving body 11 and meshes with the guide gear set 63. The lower output end of the transmission assembly 5 is connected to the connecting gear 61. The intermediate gear set 62 is respectively disposed within the guide gear set 63 and the forming gear set 64. Both the guide gear set 63 and the forming gear set 64 are connected to the guide gear set 64 via a connecting shaft 65. Wheel set 2 and forming wheel set 3 are connected accordingly. The connecting shaft 65 is set on the driving body 11 and the driven body 12 respectively through bearings. The connecting gear 61, the transition gear set 62, and the guide gear set 63 cooperate to form a gear transmission structure. The output end of the lower end of the speed transmission component 5 is connected to the connecting gear 61 so that the power can be transmitted to the guide gear set 63 through the connecting gear 61. The forming wheel gear set 64 meshes with the guide gear set 63, so that the guide gear set 63 can drive the forming wheel gear set 64 to rotate. Since the guide gear set 63 and the forming wheel gear set 64 are respectively connected to the guide wheel set 2 and the forming wheel set 3 through the connecting shaft 65, the guide gear set 63 and the forming wheel gear set 64 can drive the guide wheel set 2 and the forming wheel set 3 to rotate respectively, so as to realize the lock seam rolling forming.

[0030] In this invention, the transition gear set 62 includes a first transition gear 621 and a second transition gear 622, and the guide gear set 63 includes a first guide gear 631, a second guide gear 632, a third guide gear 633, and a fourth guide gear 634. The first guide gear 631, the second guide gear 632, the third guide gear 633, and the fourth guide gear 634 are arranged along the length of the drive body 11. The first guide gear 631 meshes with the second guide gear 632 via the first transition gear 621, the third guide gear 633 meshes with the fourth guide gear 634 via the second transition gear 622, and the second guide gear 632 meshes with the first guide gear 634 via the connecting gear 61. The three guide gears 633 mesh, and the first guide gear 631, the second guide gear 632, the third guide gear 633 and the fourth guide gear 634 are respectively connected to the guide gear group 2 via the connecting shaft 65. When the connecting gear 61 is running, it can drive the second guide gear 632 and the third guide gear 633. The second guide gear 632 drives the first intermediate gear 621, which in turn causes the first guide gear 631 to rotate. The third guide gear 633 drives the second intermediate gear 622, which in turn causes the fourth guide gear 634 to rotate. Thus, the first guide gear 631, the second guide gear 632, the third guide gear 633 and the fourth guide gear 634 can drive the corresponding guide gear group 2 to rotate via the driving connecting shaft 65.

[0031] In this invention, the transition gear set 62 further includes a third transition gear 623 and a fourth transition gear 624. The forming gear set 64 includes a first forming gear 641, a second forming gear 642, a third forming gear 643, and a fourth forming gear 644 that can mesh with the first guide gear 631, the second guide gear 632, the third guide gear 633, and the fourth guide gear 634. The first forming gear 641, the second forming gear 642, the third forming gear 643, and the fourth forming gear 644 are arranged along the length direction of the driven body 12. The first forming gear 641 meshes with the second forming gear 642 via the third transition gear 623, and the third forming gear 643 meshes with the fourth forming gear 644 via the fourth transition gear 624. The first forming gear 641, the second forming gear 642, the third forming gear 643, and the fourth forming gear 644 are all connected. Wheel 643 and the fourth forming wheel gear 644 are respectively connected to the forming wheel group 3 via connecting shaft 65. The first forming wheel gear 641 meshes with the first guide wheel gear 631, the second forming wheel gear 642 meshes with the second guide wheel gear 632, the third forming wheel gear 643 meshes with the third guide wheel gear 633, and the fourth forming wheel gear 644 meshes with the fourth guide wheel gear 634. Therefore, the first guide wheel gear 631, the second guide wheel gear 632, the third guide wheel gear 633, and the fourth guide wheel gear 634 can drive the first forming wheel gear 641, the second forming wheel gear 642, the third forming wheel gear 643, and the fourth forming wheel gear 644 respectively. At the same time, the third transition gear 623 meshes with the first forming wheel gear 641 and the second forming wheel gear 642 respectively, and the fourth transition gear 624 meshes with the third forming wheel gear 643 and the fourth forming wheel gear 644 respectively, which makes the structure more compact and the operation more stable.

[0032] In this utility model, the guide wheel assembly 2 includes a first guide wheel 21, a second guide wheel 22, a third guide wheel 23, and a fourth guide wheel 24 that can be connected to the first guide wheel gear 631, the second guide wheel gear 632, the third guide wheel gear 633, and the fourth guide wheel gear 634 respectively via a connecting shaft 65. The forming wheel assembly 3 includes a first forming wheel 31 and a second forming wheel 34 that can be connected to the first forming wheel gear 641, the second forming wheel gear 642, the third forming wheel gear 643, and the fourth forming wheel gear 644 respectively via a connecting shaft 65. 32. The third forming wheel 33 and the fourth forming wheel 34; the first guide wheel gear 631, the second guide wheel gear 632, the third guide wheel gear 633, and the fourth guide wheel gear 634 can drive the first guide wheel 21, the second guide wheel 22, the third guide wheel 23, and the fourth guide wheel 24 to rotate respectively; the first forming wheel gear 641, the second forming wheel gear 642, the third forming wheel gear 643, and the fourth forming wheel gear 644 can drive the first forming wheel 31, the second forming wheel 32, the third forming wheel 33, and the fourth forming wheel 34 respectively.

[0033] In this utility model, the reduction gearbox 4 includes a lower gearbox 41, which is connected to the upper end face of the drive body 11. A positioning plate 42 is connected to the upper end of the lower gearbox 41, and an upper gearbox 43 is connected to the positioning plate 42. A motor mounting base 44 is connected to the upper gearbox 43. The driving component is a drive motor 7, which is connected to the upper end face of the motor mounting base 44. The speed transmission assembly 5 includes a first upper gear 51 that can mesh with the output shaft of the drive motor 7. The first upper gear 51 is connected to the upper end of a first reduction shaft 52. A first lower gear 53 is connected to the lower end of the first reduction shaft 52. The first lower gear 53 meshes with a second lower gear 54, and the second lower gear 54 is connected to the lower end of a second reduction shaft 55. The connection includes a second upper gear 56 connected to the upper end of the second reduction shaft 55, which meshes with a third upper gear 57. The third upper gear 57 is connected to the upper end of a third reduction shaft 58, and the lower end of the third reduction shaft 58 is connected to a connecting gear 61. The first upper gear 51, first reduction shaft 52, first lower gear 53, second lower gear 54, second reduction shaft 55, second upper gear 56, third upper gear 57, and third reduction shaft 58 combine to form a double-combination speed change transmission structure. The upper end of the first reduction shaft 52 is movably connected to the motor mounting base 44 via a bearing and the upper end of the upper housing 43. The lower end of the first reduction shaft 52 is movably connected to the lower housing 41 via a bearing and a positioning plate 42. The upper end of the second reduction shaft 55... The lower end of the second reduction shaft 55 is movably connected to the lower housing 41 via a bearing, and the upper end of the third reduction shaft 58 is movably connected to the positioning plate 42 via a bearing. The lower end of the third reduction shaft 58 is movably connected to the drive body 11 via a bearing. The lower housing 41, positioning plate 42, and upper housing 43 are positioned by positioning pins and connected together by screws. This ensures the meshing accuracy between the first upper gear 51 and the output shaft of the drive motor 7, avoiding excessive clearance or tightness. This prevents the first upper gear 51 from wearing out and also avoids excessive meshing, which could easily lead to overload of the drive motor 7. The first upper gear 51, first lower gear 53, second lower gear 54, second upper gear 56, and third upper gear 57 all adopt... The helical gear structure ensures smooth operation, reduces vibration and noise, has a high load-bearing capacity and large transmission ratio, high transmission efficiency, and long service life. The dual-combination speed change transmission structure can provide greater output torque and stronger power. The lower end of the third reduction shaft 58 is connected to the connecting gear 61 to provide power for the rotation of the second guide gear 632 and the third guide gear 633. The first reduction shaft 52 is movably connected to the motor mounting base 44 through bearings, thus enabling rotation. The first reduction shaft 52, the second reduction shaft 55, and the third reduction shaft 58 are respectively installed in the lower housing 41, the positioning plate 42, and the upper housing 43 through bearings. After installation, the structure is compact, which helps to maintain the smooth operation of the machine and reduce the failure rate.

[0034] In this utility model, the opening and closing handle 13 includes an opening and closing shaft 131 and an adjusting handle 132. The front end of the opening and closing shaft 131 is connected to the driving body 11 via the driven body 12, and the rear end of the opening and closing shaft 131 is connected to the adjusting handle 132 via a locking cam 133. The driven body 12 and the driving body 11 are connected together via the opening and closing shaft 131. The adjusting handle 132 and the locking cam 133 cooperate to adjust the distance between the driven body 12 and the driving body 11 via the opening and closing shaft 131.

[0035] In practical use, after the drive motor 7 starts, its output shaft drives the first upper gear 51 to rotate. This causes the first upper gear 51 to drive the first reduction shaft 52 and the first lower gear 53 to rotate synchronously. The first lower gear 53 drives the second lower gear 54, which in turn causes the second reduction shaft 55 and the second upper gear 56 to rotate. The second upper gear 56 drives the third upper gear 57, which in turn causes the third reduction shaft 58 to rotate. Since the lower end of the third reduction shaft 58 is connected to the connecting gear 61, the connecting gear 61 rotates and drives the second guide gear 632 and the third guide gear 633. The second guide gear 632 drives the first guide gear 631 through the first intermediate gear 621. The third guide gear 633 drives the fourth forming gear 644 through the second intermediate gear 622. Thus, the first guide gear 631, the second guide gear 632, the third guide gear 633, and the fourth guide gear 634 respectively drive the first guide gear 21 via the connecting shaft 65. The second guide wheel 22, the third guide wheel 23, and the fourth guide wheel 24 rotate accordingly. When the driven body 12 and the driving body 11 are in the locked state, the first guide wheel gear 631, the second guide wheel gear 632, the third guide wheel gear 633, and the fourth guide wheel gear 634 mesh with the first forming wheel gear 641, the second forming wheel gear 642, the third forming wheel gear 643, and the fourth forming wheel gear 644 respectively. Therefore, the first forming wheel gear 641, the second forming wheel gear 642, the third forming wheel gear 643, and the fourth forming wheel gear 644 respectively rotate the first forming wheel 31, the second forming wheel 32, the third forming wheel 33, and the fourth forming wheel 34 respectively via the connecting shaft 65. The multi-gear transmission method ensures smooth and reliable transmission. During the transmission process, the occurrence of impact, vibration, and noise is greatly reduced when the transmission is stationary, which can maintain the stability of the transmission system and help improve the operating efficiency and stability of the lockstitch machine.

[0036] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above. Devices and structures not described in detail herein should be understood as being implemented in a conventional manner within the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this utility model using the disclosed methods and techniques, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. This does not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, still fall within the protection scope of the technical solution of this utility model.

Claims

1. A lockstitch machine transmission structure comprising a lockstitch machine body (1), characterized in that: The lockstitch machine body (1) includes a pair of active body (11) and driven body (12). The active body (11) and driven body (12) are movably connected together by an opening and closing handle (13). A reduction gearbox (4) is provided at the upper end of the active body (11). A speed transmission assembly (5) is provided in the reduction gearbox (4). A gear transmission assembly (6) is provided in the active body (11) and driven body (12). A guide wheel assembly (2) is provided at the bottom of the active body (11). A forming wheel assembly (3) that can cooperate with the guide wheel assembly (2) is provided at the bottom of the driven body (12). The lower output end of the speed transmission assembly (5) is connected to the guide wheel assembly (2) and the forming wheel assembly (3) respectively via the gear transmission assembly (6). The upper input end of the reduction gearbox (4) is connected to the output shaft of a drive component.

2. A lockstitch machine drive structure according to claim 1, characterized in that: The gear transmission assembly (6) includes a connecting gear (61), a transition gear set (62), a guide gear set (63), and a forming gear set (64) capable of meshing with the guide gear set (63). The guide gear set (63) is disposed along the length of the driving body (11), and the forming gear set (64) is disposed along the length of the driven body (12). The connecting gear (61) is disposed in the middle of the driving body (11) and... The connecting gear (61) meshes with the guide wheel gear set (63). The lower output end of the transmission assembly (5) is connected to the connecting gear (61). The transition gear set (62) is respectively disposed in the guide wheel gear set (63) and the forming wheel gear set (64). The guide wheel gear set (63) and the forming wheel gear set (64) are respectively connected to the guide wheel set (2) and the forming wheel set (3) through a connecting shaft (65). The connecting shaft (65) is disposed on the driving body (11) and the driven body (12) through bearings.

3. The transmission structure of a lockstitch machine according to claim 2, characterized in that: The transition gear set (62) includes a first transition gear (621) and a second transition gear (622), and the guide gear set (63) includes a first guide gear (631), a second guide gear (632), a third guide gear (633), and a fourth guide gear (634). The first guide gear (631), the second guide gear (632), the third guide gear (633), and the fourth guide gear (634) are arranged along the length direction of the drive body (11) on the drive body (11), wherein the first guide gear... The wheel (631) meshes with the second guide wheel gear (632) via the first intermediate gear (621), the third guide wheel gear (633) meshes with the fourth guide wheel gear (634) via the second intermediate gear (622), and the second guide wheel gear (632) meshes with the third guide wheel gear (633) via the connecting gear (61). The first guide wheel gear (631), the second guide wheel gear (632), the third guide wheel gear (633) and the fourth guide wheel gear (634) are respectively connected to the guide wheel group (2) via the connecting shaft (65).

4. The lockstitch sewing machine drive structure of claim 3, wherein: The transition gear set (62) further includes a third transition gear (623) and a fourth transition gear (624). The forming gear set (64) includes a first forming gear (641), a second forming gear (642), a third forming gear (643), and a fourth forming gear (644) capable of meshing with the first guide gear (631), the second guide gear (632), the third guide gear (633), and the fourth guide gear (634). Gears (644) are arranged along the length of the driven body (12) on the driven body (12). The first shaped gear (641) meshes with the second shaped gear (642) via the third intermediate gear (623), and the third shaped gear (643) meshes with the fourth shaped gear (644) via the fourth intermediate gear (624). The first shaped gear (641), the second shaped gear (642), the third shaped gear (643) and the fourth shaped gear (644) are respectively connected to the shaped gear set (3) via the connecting shaft (65).

5. The transmission structure of a lockstitch machine according to claim 4, characterized in that: The wheel assembly (2) includes a first wheel (21), a second wheel (22), a third wheel (23), and a fourth wheel (24) that can be connected to the first wheel gear (631), the second wheel gear (632), the third wheel gear (633), and the fourth wheel gear (634) respectively via the connecting shaft (65). The forming wheel assembly (3) includes a first forming wheel (31), a second forming wheel (32), a third forming wheel (33), and a fourth forming wheel (34) that can be connected to the first forming wheel gear (641), the second forming wheel gear (642), the third forming wheel gear (643), and the fourth forming wheel gear (644) respectively via the connecting shaft (65).

6. The transmission structure of a lockstitch machine according to claim 5, characterized in that: The gearbox (4) includes a lower housing (41), which is connected to the upper end face of the active body (11). A positioning plate (42) is connected to the upper end of the lower housing (41), and an upper housing (43) is connected to the positioning plate (42). A motor mounting seat (44) is connected to the upper housing (43). The driving component is a drive motor (7), which is connected to the upper end face of the motor mounting seat (44).

7. The transmission structure of a lockstitch machine according to claim 6, characterized in that: The transmission assembly (5) includes a first upper gear (51) capable of meshing with the output shaft of the drive motor (7). The first upper gear (51) is connected to the upper end of a first reduction shaft (52). A first lower gear (53) is connected to the lower end of the first reduction shaft (52). The first lower gear (53) meshes with a second lower gear (54). The second lower gear (54) is connected to the lower end of a second reduction shaft (55). A second upper gear (56) is connected to the upper end of the second reduction shaft (55). The second upper gear (56) meshes with a third upper gear (57), the third upper gear (57) is connected to the upper end of a third reduction shaft (58), and the lower end of the third reduction shaft (58) is connected to the connecting gear (61). The first upper gear (51), the first reduction shaft (52), the first lower gear (53), the second lower gear (54), the second reduction shaft (55), the second upper gear (56), the third upper gear (57), and the third reduction shaft (58) are combined to form a double combination speed change transmission structure.

8. The transmission structure of a lockstitch machine according to claim 7, characterized in that: The upper end of the first reduction shaft (52) is movably connected to the motor mounting base (44) via the upper end of the upper housing (43) through a bearing. The lower end of the first reduction shaft (52) is movably connected to the lower housing (41) via the positioning plate (42) through a bearing. The upper end of the second reduction shaft (55) is movably connected to the positioning plate (42) via a bearing. The lower end of the second reduction shaft (55) is movably connected to the lower housing (41) via a bearing. The upper end of the third reduction shaft (58) is movably connected to the positioning plate (42) via a bearing. The lower end of the third reduction shaft (58) is movably connected to the active body (11) via a bearing.

9. The transmission structure of a lockstitch machine according to claim 8, characterized in that: The opening and closing handle (13) includes an opening and closing shaft (131) and an adjusting handle (132). The front end of the opening and closing shaft (131) is connected to the driving body (11) via the driven body (12), and the rear end of the opening and closing shaft (131) is connected to the adjusting handle (132) via a locking cam (133).

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