Height adjusting mechanism for adjusting seat of high-speed double-thread chained sewing machine

Abstract

The utility model discloses a height adjusting mechanism for an adjusting seat of a high-speed double-thread chained sewing machine. The height adjusting mechanism comprises a machine shell, a lifting mechanism and a locking mechanism, a mounting plate is mounted at the left end of the shell through screws; the lifting mechanism comprises a guide block, L-shaped rails and a connecting rod, the two L-shaped rails are fixedly connected between the top wall and the bottom wall of the machine shell and distributed in a front-back staggered mode, the guide block is slidably connected between the two L-shaped rails, and the connecting rod is fixedly connected to the middle of the lower side face of the guide block; the outer side face of the connecting rod is slidably connected with a sliding hole in the bottom wall of the machine shell. A square mounting block is arranged at the lower end of the connecting rod. The locking mechanism is arranged between the rear wall of the machine shell and the rear side face of the guide block. According to the height adjusting mechanism for the adjusting seat of the high-speed double-thread chained sewing machine, the labor cost is reduced, the height can be automatically adjusted, and the high-speed double-thread chained sewing machine can cope with cloth of any thickness and is high in stability.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine fabric processing technology, specifically to a height adjustment mechanism for a high-speed double-thread chain sewing machine adjustment seat. Background Technology

[0002] Following the Industrial Revolution in the mid-18th century, the large-scale production in the textile industry spurred the invention and development of sewing machines. With the advancement of sewing machines, high-speed double-thread chain sewing machines gradually emerged. The processing of fabrics in high-speed double-thread chain sewing machines relies not only on the interplay of needle and thread, but also on the adjusting mechanism, a crucial component. As the types and thicknesses of fabrics increase, the height adjustment mechanism of the adjusting mechanism in high-speed double-thread chain sewing machines becomes essential for processing different materials. Most existing height adjustment mechanisms in high-speed double-thread chain sewing machines are manually operated, while others, although automatically adjustable, cannot handle fabrics with significant thickness variations and exhibit poor stability. Therefore, we propose a height adjustment mechanism for the adjusting mechanism of a high-speed double-thread chain sewing machine. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a height adjustment mechanism for the adjustment seat of a high-speed double-thread chain sewing machine, which can handle fabrics of any thickness, has strong stability, and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a height adjustment mechanism for the adjusting seat of a high-speed double-thread chain sewing machine, comprising a machine housing, a lifting mechanism, and a locking mechanism;

[0005] The casing has a mounting plate attached to its left end by screws.

[0006] Lifting mechanism: It includes a guide block, an L-shaped track and a connecting rod. Two L-shaped tracks are fixedly connected between the top wall and the bottom wall of the housing. The two L-shaped tracks are staggered front and back. A guide block is slidably connected between the two L-shaped tracks. A connecting rod is fixedly connected to the middle of the lower side of the guide block. The outer side of the connecting rod is slidably connected to the sliding hole of the bottom wall of the housing. A square mounting block is provided at the lower end of the connecting rod.

[0007] Locking mechanism: It is located between the rear wall of the housing and the rear side of the guide block;

[0008] The machine also includes an adjustment seat, which is bolted to the lower end of the square mounting block. A connecting shaft is located in the middle of the adjustment seat, and the end of the connecting shaft is rotatably connected to the inner wall of the presser foot. A torsion spring is sleeved on the outside of the left end of the connecting shaft. The right end of the torsion spring is fixedly connected to the left side of the adjustment seat, and the left end of the torsion spring is fixedly connected to the outer surface of the connecting shaft. This reduces labor costs, allows for automatic adjustment, and enables the high-speed double-thread chain sewing machine to handle fabrics of any thickness with strong stability.

[0009] Furthermore, it also includes a microcontroller, which is located on the left side of the casing. The input terminal of the microcontroller is electrically connected to an external power supply, enabling intelligent management and reducing the burden on manual labor.

[0010] Furthermore, the lifting mechanism also includes a rack plate, a gear, and a motor. The rack plate is fixedly installed on the left wall of the housing, and the motor is installed on the left side of the guide block by bolts. The output shaft of the motor is fixedly connected to a gear, which meshes with the rack plate. The input end of the motor is electrically connected to the output end of the microcontroller, thus intelligently driving the lifting motion.

[0011] Furthermore, the locking mechanism includes a positioning block, a spring, a T-block, a locking block, and a locking rack plate. The positioning block is fixedly installed on the middle of the rear side of the guide block. A square groove is opened at the rear end of the positioning block, and a spring is installed inside the square groove. A T-block is fixedly installed at the rear end of the spring. The T-block is slidably connected to the inner wall of the positioning block. A locking block is provided at the middle of the rear side of the T-block. A locking rack plate is fixedly installed at the middle of the rear wall of the housing. The locking rack plate and the locking block are installed together to lock the lifting mechanism.

[0012] Furthermore, the locking mechanism also includes electromagnets and magnetic strips. Electromagnets are provided at the left and right ends of the rear side of the T-block, and two magnetic strips are provided on the rear side of the housing. The two magnetic strips are located on the left and right sides of the locking rack plate, respectively. The two magnetic strips correspond one-to-one with the two electromagnets. The input end of the electromagnet is electrically connected to the output end of the microcontroller, thus forming an intelligent locking and lifting mechanism.

[0013] Furthermore, a distance sensor is attached to the lower right side of the adjustment seat. The distance sensor is bidirectionally electrically connected to the microcontroller, which improves automation.

[0014] Furthermore, the upper end of the housing is provided with a clearance hole for the installation and lifting of the needle.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The height adjustment mechanism of this high-speed double-thread chain sewing machine adjustment seat has the following advantages:

[0016] The worker places the fabric under the adjusting seat. If it fits, the distance sensor transmits the distance between the adjusting seat and the fabric to the microcontroller. The microcontroller then activates the electromagnet. The magnetic forces of the electromagnet and the magnetic strip repel each other, causing the locking block to disengage from the locking rack plate. The microcontroller then activates the motor. The motor's output shaft rotates, driving the gears to mesh on the rack plate. This causes the guide block to move downwards along two L-shaped tracks, adjusting the adjusting seat to the appropriate distance from the fabric. The electromagnet is then deactivated. The spring inside the positioning block returns, causing the locking shaft to re-enter the toothed groove of the locking rack plate at the same height, completing the locking process and further completing the fabric adjustment. For fabric processing, if the fabric cannot be placed under the adjusting seat, first control the microcontroller to turn on the electromagnet. The magnetic force of the electromagnet and the magnetic strip repels each other, causing the locking block to disengage from the locking rack plate. Then control the microcontroller to turn on the motor. The output shaft of the motor rotates, driving the gear to rotate. The gear meshes on the rack plate, causing the guide block to move upward in the two L-shaped tracks. Place the fabric in again. If the distance and height are not suitable, repeat the above descent method to adjust the adjusting seat to the appropriate height, and then process the fabric. This reduces labor costs, can be automatically adjusted, and the high-speed double-thread chain sewing machine can handle fabrics of any thickness with strong stability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention from a right-side cross-sectional view.

[0019] Figure 3 This is an enlarged structural schematic diagram of point A of this utility model;

[0020] Figure 4 This is an enlarged structural schematic diagram of section B of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the present invention from the left side.

[0022] In the diagram: 1. Housing, 2. Lifting mechanism, 21. Rack plate, 22. Gear, 23. Motor, 24. Guide block, 25. L-shaped track, 26. Connecting rod, 3. Locking mechanism, 31. Positioning block, 32. Spring, 33. T-block, 34. Locking block, 35. Electromagnet, 36. Magnetic strip, 37. Locking rack plate, 4. Torsion spring, 5. Adjusting seat, 6. Connecting shaft, 7. Distance sensor, 8. Screw, 9. Mounting plate, 10. Microcontroller. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-5 This embodiment provides a technical solution: a height adjustment mechanism for the adjusting seat of a high-speed double-thread chain sewing machine, including a machine housing 1, a lifting mechanism 2, and a locking mechanism 3;

[0025] Housing 1: A mounting plate 9 is installed on its left end by screws 8, and a clearance hole is provided at the upper end of housing 1;

[0026] Lifting mechanism 2 includes a guide block 24, L-shaped rails 25, and a connecting rod 26. Two L-shaped rails 25 are fixedly connected between the top and bottom walls of the housing 1, and the two L-shaped rails 25 are staggered. A guide block 24 is slidably connected between the two L-shaped rails 25. A connecting rod 26 is fixedly connected to the middle of the lower side of the guide block 24. The outer side of the connecting rod 26 is slidably connected to a sliding hole in the bottom wall of the housing 1. A square mounting block is provided at the lower end of the connecting rod 26. The lifting mechanism 2 also includes a rack plate 21, a gear 22, and a motor 23. The rack plate 21 is fixedly installed on the left wall of the housing 1, and the motor 23 is installed on the left wall by bolts. On the left side of the guide block 24, the output shaft of the motor 23 is fixedly connected to a gear 22. The gear 22 meshes with the rack plate 21. The input end of the motor 23 is electrically connected to the output end of the microcontroller 10. The output shaft of the motor 23 rotates, causing the gear 22 to rotate. The gear 22 meshes on the rack plate 21, causing the guide block 24 to move downward in the two L-shaped tracks 25. Adjust the adjusting seat 5 to a suitable distance from the fabric, turn on the motor 23, and the output shaft of the motor 23 rotates, causing the gear 22 to rotate. The gear 22 meshes on the rack plate 21, causing the guide block 24 to move upward in the two L-shaped tracks 25.

[0027] Locking mechanism 3: It is located between the rear wall of the housing 1 and the rear side of the guide block 24. The locking mechanism 3 includes a positioning block 31, a spring 32, a T-block 33, a locking block 34, and a locking rack plate 37. The positioning block 31 is fixedly installed in the middle of the rear side of the guide block 24. A square groove is opened at the rear end of the positioning block 31, and the spring 32 is installed inside the square groove. The T-block 33 is fixedly installed at the rear end of the spring 32. The T-block 33 is slidably connected to the inner wall of the positioning block 31. The locking block 34 is located in the middle of the rear side of the T-block 33. The locking rack plate 37 is fixedly installed in the middle of the rear wall of the housing 1. The locking rack plate 37 is installed in cooperation with the locking block 34. The locking mechanism 3 also includes an electromagnet 35 and a magnetic strip 36. Electromagnets 35 are provided at the left and right ends of the rear side of the T-block 33. Two magnetic strips 36 are provided on the rear side of the housing 1. The two magnetic strips 36 are located on the locking rack plate 37. On the left and right sides of 7, two magnetic strips 36 and two electromagnets 35 are positioned one in front and one behind. The input end of the electromagnet 35 is electrically connected to the output end of the microcontroller 10. When the electromagnet 35 is turned on, the magnetic forces of the electromagnet 35 and the magnetic strips 36 repel each other, causing the locking block 34 to exit from the locking rack plate 37. The microcontroller 10 is then controlled to turn off the electromagnets. The spring 33 inside the positioning block 31 rebounds, causing the locking shaft 35 to re-enter the tooth groove of the locking rack plate 37 at the same height, thus completing the locking.

[0028] The machine includes an adjusting seat 5, which is bolted to the lower end of a square mounting block. A connecting shaft 6 is located in the middle of the adjusting seat 5, with its end rotatably connected to the inner wall of the presser foot. A torsion spring 4 is sleeved on the left side of the connecting shaft 6, with its right end fixedly connected to the left side of the adjusting seat 5 and its left end fixedly connected to the outer surface of the connecting shaft 6. A distance sensor 7 is attached to the lower right side of the adjusting seat 5 and is bidirectionally electrically connected to a microcontroller 10. The microcontroller 10 is located on the left side of the machine housing 1, with its input electrically connected to an external power source. If the machine can be inserted, the distance sensor 7 transmits the distance between the adjusting seat 5 and the fabric to the microcontroller 10. Removing the four screws 7 allows the left side of the machine housing 1 to be removed, and the mounting plate 9 to be taken off for later internal maintenance, reducing labor costs. This high-speed double-thread chain sewing machine can automatically adjust and handle fabrics of any thickness with strong stability.

[0029] The working principle of the height adjustment mechanism for the high-speed double-thread chain sewing machine adjustment seat provided by this utility model is as follows: The worker places the fabric under the adjustment seat 5. If the fabric can fit, the distance sensor 7 transmits the distance between the adjustment seat 5 and the fabric to the microcontroller 10. The microcontroller 10 is then activated, turning on the electromagnet 35. The magnetic forces of the electromagnet 35 and the magnetic strip 36 repel each other, causing the locking block 34 to disengage from the locking rack plate 37. The microcontroller 10 is then activated, turning on the motor 23. The output shaft of the motor 23 rotates, driving the gear 22 to rotate. The gear 22 meshes on the rack plate 21, causing the guide block 24 to move downwards in the two L-shaped tracks 25, adjusting the adjustment seat 5 to a suitable distance from the fabric. The electromagnet is then deactivated, and the spring 33 inside the positioning block 31 rebounds, causing the locking shaft 35 to re-enter the lock. Locking is completed in the toothed groove of the locking rack plate 37 of the same height, and the fabric processing is further completed. If the fabric cannot be put into the adjusting seat 5, first control the microcontroller 10 to turn on the electromagnet 35. The magnetic force of the electromagnet 35 and the magnetic strip 36 repel each other, causing the locking block 34 to exit from the locking rack plate 37. Control the microcontroller 6 to turn on the motor 23. The output shaft of the motor 23 rotates and drives the gear 22 to rotate. The gear 22 meshes on the rack plate 21, driving the guide block 24 to move upward in the two L-shaped tracks 25. Put the fabric in again. If the distance and height are not suitable, repeat the above descent method to adjust the adjusting seat 5 to a suitable height, and then process the fabric. Remove the four screws 7 to remove the left side of the housing 1 and remove the mounting plate 9 for later internal maintenance.

[0030] It is worth noting that the motor 23 disclosed in the above embodiments can be C4.2, the electromagnet 35 can be SDC-13PH, the microcontroller 10 can be MCS-51, and the ranging sensor 7 can be SG3030. The microcontroller 10 controls the operation of the motor 23, the electromagnet 35 and the ranging sensor 7 using methods commonly used in the prior art.

[0031] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A height adjustment mechanism for the adjusting seat of a high-speed double-thread chain sewing machine, characterized in that: It includes a housing (1), a lifting mechanism (2), and a locking mechanism (3); Housing (1): A mounting plate (9) is installed on its left end by screws (8); Lifting mechanism (2): It includes a guide block (24), an L-shaped track (25) and a connecting rod (26). Two L-shaped tracks (25) are fixedly connected between the top wall and the bottom wall of the housing (1). The two L-shaped tracks (25) are staggered front and back. A guide block (24) is slidably connected between the two L-shaped tracks (25). A connecting rod (26) is fixedly connected to the middle of the lower side of the guide block (24). The outer side of the connecting rod (26) is slidably connected to the sliding hole of the bottom wall of the housing (1). A square mounting block is provided at the lower end of the connecting rod (26). Locking mechanism (3): It is located between the rear wall of the housing (1) and the rear side of the guide block (24); Among them, there is also an adjustment seat (5), which is bolted to the lower end of the square mounting block. A connecting shaft (6) is provided in the middle of the adjustment seat (5). The end of the connecting shaft (6) is rotatably connected to the inner wall of the press foot. A torsion spring (4) is sleeved on the outside of the left end of the connecting shaft (6). The right end of the torsion spring (4) is fixedly connected to the left side of the adjustment seat (5). The left end of the torsion spring (4) is fixedly connected to the outer surface of the connecting shaft (6).

2. The height adjustment mechanism for the high-speed double-thread chain sewing machine adjusting seat according to claim 1, characterized in that: It also includes a microcontroller (10), which is located on the left side of the housing (1), and the input terminal of the microcontroller (10) is electrically connected to an external power supply.

3. The height adjustment mechanism for the high-speed double-thread chain sewing machine adjusting seat according to claim 2, characterized in that: The lifting mechanism (2) also includes a rack (21), a gear (22) and a motor (23). The rack (21) is fixedly installed on the left wall of the housing (1). The motor (23) is installed on the left side of the guide block (24) by bolts. The output shaft of the motor (23) is fixedly connected to the gear (22). The gear (22) meshes with the rack (21). The input end of the motor (23) is electrically connected to the output end of the microcontroller (10).

4. The height adjustment mechanism for the high-speed double-thread chain sewing machine adjusting seat according to claim 2, characterized in that: The locking mechanism (3) includes a positioning block (31), a spring (32), a T-block (33), a locking block (34), and a locking rack plate (37). The positioning block (31) is fixedly installed on the middle of the rear side of the guide block (24). A square groove is provided at the rear end of the positioning block (31), and a spring (32) is provided inside the square groove. A T-block (33) is fixedly installed at the rear end of the spring (32). The T-block (33) is slidably connected to the inner wall of the positioning block (31). A locking block (34) is provided at the middle of the rear side of the T-block (33). A locking rack plate (37) is fixedly installed at the middle of the rear wall of the housing (1). The locking rack plate (37) is installed in cooperation with the locking block (34).

5. The height adjustment mechanism for the high-speed double-thread chain sewing machine adjusting seat according to claim 4, characterized in that: The locking mechanism (3) also includes an electromagnet (35) and a magnetic strip (36). The left and right ends of the rear side of the T-block (33) are provided with electromagnets (35). The rear side of the housing (1) is provided with two magnetic strips (36). The two magnetic strips (36) are located on the left and right sides of the locking rack plate (37). The two magnetic strips (36) correspond to the two electromagnets (35) one in front and one in back. The input end of the electromagnet (35) is electrically connected to the output end of the microcontroller (10).

6. The height adjustment mechanism for the high-speed double-thread chain sewing machine adjusting seat according to claim 2, characterized in that: A distance sensor (7) is attached to the lower right side of the adjustment seat (5), and the distance sensor (7) is bidirectionally electrically connected to the microcontroller (10).

7. The height adjustment mechanism for the high-speed double-thread chain sewing machine adjusting seat according to claim 1, characterized in that: The upper end of the housing (1) is provided with a clearance hole.

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