Locating mechanism of overlocking vehicle

Abstract

The utility model relates to the technical field of overlocking, and discloses an overlocking vehicle positioning mechanism which comprises a working table. The presser foot is arranged above the workbench, one end of the presser foot is provided with an overlocking groove, and the other end of the top side of the presser foot is connected with a connecting rod; the supporting seat is fixedly connected to the top side of the workbench through a bracket; the fixing columns and the positioning rollers are symmetrically arranged on the two sides of the presser foot, the supporting columns and the positioning plates are arranged on the bottom side of the presser foot, and the linkage assemblies are arranged between the positioning rollers and the positioning plates, so that when the presser foot presses clothes, the two positioning rollers can respectively press the two sides of the clothes and roll in an extruding mode, and therefore the clothes can be pressed tightly by the positioning rollers while the clothes are pressed tightly. The clothes can be further leveled, meanwhile, the positioning plate presses the clothes and ascends, and after the presser foot presses the surface of the clothes, the positioning roller and the positioning plate always have the downward pressing movement tendency, so that the clothes positioning stability is effectively guaranteed, and the clothes are prevented from being bent and wrinkled.

Description

Technical Field

[0001] The utility model relates to the technical field of overlocking, in particular to a positioning mechanism of an overlocking machine. Background Technique

[0002] Overlocking, also known as edge-locking, refers to the thread used in the "overlocking" process during the production of clothing and its needle stitches. During the production of clothing, since materials such as polyester are generally synthetic fibers and relatively hard in texture, after cutting, the silk threads at the edge seams of the fabric will spread due to their high hardness. Therefore, overlocking is required. A special overlocking machine is used to lock a circle of edges at the edge seams to prevent the silk threads in the fabric from spreading, which also plays a role in beautification.

[0003] Currently, when an overlocking machine overlocks clothes, a positioning mechanism is usually used to position the clothes. However, the existing positioning mechanisms often use the method of pressing down the presser foot to tightly fix the clothes. During actual positioning, workers need to constantly pull and tighten the clothes laid under the presser foot to prevent the clothes from moving when the presser foot presses down and ensure the clothes are flat. Otherwise, loose or wrinkled clothes are likely to affect the subsequent thread sewing quality, which is not only cumbersome and inconvenient to operate, but also greatly affects work efficiency and the use effect is not good. Content of the Utility Model

[0004] The utility model provides a positioning mechanism of an overlocking machine to solve the problem that workers need to constantly pull and tighten the clothes laid under the presser foot when the existing overlocking machine works to prevent the clothes from moving when the presser foot presses down.

[0005] To achieve the above object, the utility model provides the following technical solution: A positioning mechanism of an overlocking machine, comprising: a workbench;

[0006] A presser foot, which is arranged above the workbench, and an overlocking groove is arranged at one end of the presser foot, and a connecting rod is connected to the other end of the top side of the presser foot;

[0007] A support seat, which is fixedly connected to the top side of the workbench through a bracket, and fixed columns are rotatably connected to both ends of the support seat close to the presser foot through rotating shafts. The bottom end of the fixed column is detachably connected to a U-shaped frame, and a positioning roller is rotatably connected to the bottom end of the U-shaped frame through a rotating shaft;

[0008] A through groove, which is opened on the side wall of the presser foot below the support seat, and a support column is connected through the inside of the through groove. A positioning plate is fixed below the bottom end of the support column close to the presser foot, and a linkage component is arranged between the support column and the fixed column.

[0009] Preferably, the linkage assembly includes sliding cavities symmetrically formed at both ends of the bottom side of the support base. A spring is fixed at one end of the sliding cavity close to the fixed column. One end of the spring is connected to a movable block. A first connecting arm is hinged between the bottom end of the movable block and the fixed column. A second connecting arm is symmetrically hinged between the top end of the support column and the two movable blocks.

[0010] Preferably, a limiting rod is fixedly connected inside the sliding cavity, and the limiting rod passes through the spring and the movable block.

[0011] Preferably, a guide rod is fixed at the top end of the support column, and the top end of the guide rod penetrates through the support base and is connected to a baffle.

[0012] Preferably, grooves facing the first connecting arm are formed on both sides of the presser foot.

[0013] Preferably, a receiving cavity facing the positioning plate is formed on the bottom side of the presser foot.

[0014] Preferably, a slot is formed at the bottom end of the fixed column. A plug column matching the slot is fixed in the middle of the top side of the U-shaped frame. A threaded hole is formed on the side wall of the plug column, and a fixing knob matching the threaded hole is connected through the side wall of the bottom end of the fixed column.

[0015] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:

[0016] By symmetrically arranging the fixed columns and the positioning rollers on both sides of the presser foot, arranging the support column and the positioning plate on the bottom side of the presser foot, and providing a linkage assembly between the positioning rollers and the positioning plate, when the presser foot presses on the clothing, the two positioning rollers can respectively press on both sides of the clothing and squeeze and roll, so that while the positioning rollers press down the clothing, the clothing can be further flattened. At the same time, the positioning plate presses on the clothing and rises. When the presser foot presses on the clothing surface, the positioning rollers and the positioning plate always have a downward pressing movement tendency, thereby effectively ensuring the stability of clothing positioning, avoiding clothing bending and wrinkling, with simple and convenient operation, high efficiency and stability, and good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is one of the overall structural schematic diagrams of the present utility model;

[0019] Figure 2The second overall structural schematic diagram of the present utility model;

[0020] Figure 3 The three-dimensional structural schematic diagram of the presser foot of the present utility model when viewed from below;

[0021] Figure 4 The longitudinal sectional view of the presser foot and the support base;

[0022] Figure 5 The exploded view of the fixed column and the U-shaped frame.

[0023] In the figure: 1, workbench; 2, presser foot; 3, overlock groove; 4, connecting rod; 5, support base; 6, sliding cavity; 7, movable block; 8, spring; 9, limiting rod; 10, fixed column; 11, U-shaped frame; 12, positioning roller; 13, support column; 14, positioning plate; 15, storage cavity; 16, through groove; 17, guide rod; 18, baffle; 19, first connecting arm; 20, second connecting arm; 21, slot; 22, plug post; 23, fixing knob; 24, threaded hole. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] As Figures 1 - 4 shown, an overlock sewing machine positioning mechanism includes:

[0026] Workbench 1;

[0027] Presser foot 2, the presser foot 2 is arranged above the workbench 1, and an overlock groove 3 is arranged at one end of the presser foot 2, and the other end of the top side of the presser foot 2 is connected with a connecting rod 4;

[0028] Support base 5, the support base 5 is fixedly connected to the top side of the workbench 1 through a bracket, and both ends of the support base 5 are rotatably connected to a fixed column 10 through a rotating shaft on the side close to the presser foot 2, the bottom end of the fixed column 10 is detachably connected with a U-shaped frame 11, and the bottom end of the U-shaped frame 11 is rotatably connected to a positioning roller 12 through a rotating shaft;

[0029] Through groove 16, the through groove 16 is opened below the side wall of the presser foot 2 close to the support base 5, and a support column 13 is penetrated and connected inside the through groove 16, the bottom end of the support column 13 is fixed with a positioning plate 14 below the presser foot 2, and a linkage assembly is arranged between the support column 13 and the fixed column 10.

[0030] A receiving cavity 15 is formed on the bottom side of the presser foot 2 and faces the positioning plate 14.

[0031] By providing the receiving cavity 15, the positioning plate 14 can be received and placed, enabling the presser foot 2 to be attached to the surface of the clothes.

[0032] The linkage assembly includes sliding cavities 6 symmetrically formed at both ends of the bottom side of the support base 5. A spring 8 is fixed at one end of the sliding cavity 6 near the fixed column 10. One end of the spring 8 is connected to a movable block 7. A first connecting arm 19 is hinged between the bottom end of the movable block 7 and the fixed column 10. Second connecting arms 20 are symmetrically hinged between the top end of the support column 13 and the two movable blocks 7.

[0033] Grooves facing the first connecting arm 19 are formed on both sides of the presser foot 2.

[0034] The grooves can prevent the side wall of the presser foot 2 from obstructing the rotation of the first connecting arm 19.

[0035] A limiting rod 9 is fixedly connected inside the sliding cavity 6. The limiting rod 9 passes between the spring 8 and the movable block 7. The stability of the spring 8 and the movable block 7 in the sliding cavity 6 can be greatly enhanced by the limiting rod 9.

[0036] A guide rod 17 is fixed at the top end of the support column 13. The top end of the guide rod 17 penetrates through the support base 5 and is connected to a baffle 18. By providing the guide rod 17, the support column 13 can drive the guide rod 17 to move on the support base 5, effectively ensuring the stability when the support column 13 drives the positioning plate 14 to move up and down.

[0037] During use, the device can drive the presser foot 2 to descend through the connecting rod 4, pressing the presser foot 2 against the clothes laid on the workbench 1;

[0038] During the pressing process, the positioning rollers 12 on both sides of the presser foot 2 can first contact the clothes, causing the two positioning rollers 12 to respectively press against both sides of the clothes. Then, the positioning rollers 12 can continue to roll and squeeze along the clothes, driving the fixed column 10 to rotate through the U-shaped frame 11. After that, the fixed column 10 can pull the first connecting arm 19 to rotate, causing the first connecting arm 19 to drive the movable block 7 to slide in the sliding cavity 6 and compress the spring 8. Thus, while the two positioning rollers 12 press the clothes downward, the clothes can be further flattened;

[0039] Subsequently, the positioning plate 14 presses against the clothes. At the same time, the movable block 7 drives the second connecting arm 20 to move, causing the two second connecting arms 20 to lift the support column 13 upward. Then, the support column 13 drives the positioning plate 14 to rise and enter the receiving cavity 15. When the presser foot 2 is pressed on the surface of the clothes, under the elastic rebound of the spring 8, the positioning rollers 12 and the positioning plate 14 can always have a downward movement tendency, effectively ensuring the stability of the clothes positioning, preventing the clothes from bending and wrinkling, and having a good use effect.

[0040] The utility model provides a hemming machine positioning mechanism as follows Figure 5 shown. A slot 21 is opened at the bottom end of the fixed column 10. A plug post 22 matching the slot 21 is fixed in the middle of the top side of the U-shaped frame 11. A threaded hole 24 is opened on the side wall of the plug post 22. A fixing knob 23 matching the threaded hole 24 is connected through the side wall of the bottom end of the fixed column 10 in a penetrating manner.

[0041] By arranging the plug post 22 and the slot 21 to be inserted and matched with each other, and then screwing on the fixing knob 23 to make the fixing knob 23 screwed tightly in the threaded hole 24, the plug post 22 can be locked in the slot 21. Conversely, it can also be separated, thereby facilitating the disassembly and assembly of the positioning roller 12 for maintenance and replacement, greatly improving the practicability of the device.

[0042] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. The hemming machine positioning mechanism is characterized by: include: Workbench (1); A presser foot (2), the presser foot (2) being arranged above the workbench (1), and one end of the presser foot (2) being provided with a hemming groove (3), and the other end of the top side of the presser foot (2) being connected with a connecting rod (4); A support seat (5), the support seat (5) is fixedly connected to the top side of the workbench (1) through a bracket, and both ends of the support seat (5) are rotatably connected to a fixed column (10) on one side close to the presser foot (2) through a rotating shaft, the bottom end of the fixed column (10) is detachably connected to a U-shaped frame (11), and the bottom end of the U-shaped frame (11) is rotatably connected to a positioning roller (12) through a rotating shaft; A through groove (16) is provided on the side wall of the presser foot (2) near the bottom of the support seat (5), and a support column (13) is connected through the interior of the through groove (16), a positioning plate (14) is fixed to the bottom end of the support column (13) near the bottom of the presser foot (2), and a linkage assembly is provided between the support column (13) and the fixed column (10).

2. The hemming machine positioning mechanism according to claim 1, characterized in that: The linkage assembly comprises a sliding cavity (6) symmetrically arranged at both ends of the bottom side of the support seat (5); a spring (8) is fixed at one end of the sliding cavity (6) close to the fixed column (10); one end of the spring (8) is connected to a movable block (7); a first connecting arm (19) is hinged between the bottom end of the movable block (7) and the fixed column (10); and a second connecting arm (20) is symmetrically hinged between the top end of the support column (13) and the two movable blocks (7).

3. The hemming machine positioning mechanism according to claim 2, characterized in that: A limiting rod (9) is fixedly connected to the interior of the sliding cavity (6), and the limiting rod (9) is inserted between the spring (8) and the movable block (7).

4. The hemming machine positioning mechanism according to claim 2, characterized in that: A guide rod (17) is fixed to the top end of the support column (13), and the top end of the guide rod (17) passes through the support seat (5) and is connected to a baffle (18).

5. The hemming machine positioning mechanism according to claim 2, characterized in that: Both sides of the presser foot (2) are provided with grooves facing the first connecting arm (19).

6. The hemming machine positioning mechanism according to claim 1, characterized in that: The bottom side of the presser foot (2) is provided with a storage cavity (15) facing the positioning plate (14).

7. The hemming machine positioning mechanism according to claim 1, characterized in that: A slot (21) is provided at the bottom end of the fixing column (10), a plug column (22) matching the slot (21) is fixed in the middle of the top side of the U-shaped frame (11), a threaded hole (24) is provided on the side wall of the plug column (22), and a fixing knob (23) matching the threaded hole (24) is penetrated and connected to the side wall of the bottom end of the fixing column (10).

Images