Tightness adjusting mechanism for overlock thread

Abstract

The utility model relates to the technical field of garment processing, in particular to an overlock thread tightness adjusting mechanism which comprises an installation plate, a thread clamping assembly and an adjusting assembly, the thread clamping assembly comprises a fixed thread clamping disc and a thread clamping spring, and a movable thread clamping disc is movably installed above the fixed thread clamping disc. The adjusting assembly comprises a movable plate and an adjusting air cylinder, the movable plate is movably arranged in the middle of the top face of the mounting plate, shifting forks are distributed at the end, close to the fixed wire clamping disc, of the movable plate in a staggered mode, and the shifting forks are distributed between the fixed wire clamping disc and the movable wire clamping disc. The end, close to the fixed wire clamping disc, of the shifting fork is provided with an inclined position, the adjusting air cylinder is connected with the movable plate, and when a plurality of wire clamping devices need to be rapidly adjusted, the shifting fork is driven by the adjusting air cylinder to move between the fixed wire clamping disc and the movable wire clamping disc; through the design of the movable plate and the shifting fork, the fixed wire clamping discs and the movable wire clamping discs on the multiple wire clamping devices can be adjusted at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to clothing processing technical field especially is a kind of overlock thread tightness adjusting mechanism. BACKGROUND

[0002] Thread tightness adjustment is the key step in sewing process, directly affect sewing quality and finished product appearance, its main work is away, is by adjusting the tension of top thread and bottom thread, so that the two reach balance, form uniform, beautiful stitch, also can by adjusting the tension of top thread and bottom thread, so that the effect of more durable sewing product.

[0003] Existing thread tightness usually adopts thread clipper to adjust tightness, its working principle is by two thread clamping discs on thread clipper to clamp thread, by adjusting the tightness between clamping disc, to control the tension of thread;

[0004] But when multiple thread clippers are set, if thread tightness is adjusted, each thread clipper needs to be adjusted separately, to realize the effect of adjustment, the process of adjustment is more cumbersome, reduces work efficiency, for this, the present application provides an overlock thread tightness adjusting mechanism to solve the above technical problems. CONTENT OF UTILITY MODEL

[0005] The utility model aims to realize by the following mode: an overlock thread tightness adjusting mechanism, including mounting plate, thread clamping component and adjusting assembly, thread clamping component and adjusting assembly are installed on mounting plate, thread clamping component includes fixed thread clamping disc and thread clamping spring, fixed thread clamping disc is distributed in one end of mounting plate top surface, the top of fixed thread clamping disc is movably installed with movable thread clamping disc, thread clamping spring is set on the top surface of movable thread clamping disc and cooperates with the top surface of movable thread clamping disc, adjusting assembly includes movable plate and adjusting cylinder, movable plate is movably set in the middle of mounting plate top surface, the end close to fixed thread clamping disc of movable plate is staggered and is distributed with yoke, yoke is distributed between fixed thread clamping disc and movable thread clamping disc, the end close to fixed thread clamping disc of yoke is equipped with inclined position, adjusting cylinder is connected with movable plate.

[0006] In the above description, further scheme is that the middle of the top surface of fixed thread clamping disc is equipped with mounting rod, mounting rod extends towards the direction of thread clamping spring, the position close to mounting rod of the middle of movable thread clamping disc is equipped with avoiding hole, the position close to thread clamping spring of the middle of mounting rod is equipped with partition cover, the bottom surface of partition cover is equipped with accommodating groove matched with thread clamping spring in the position close to thread clamping spring;Partition cover can prevent thread from winding on thread clamping spring.

[0007] In the above description, as a further scheme, a top surface of the partition cover is provided with a movable hole matched with the mounting rod near a position of the mounting rod, an outer thread is distributed on a top part of the mounting rod, an adjusting block is arranged above the partition cover, a threaded hole matched with the outer thread is arranged on a middle part of the adjusting block near a position of the outer thread, and the threaded hole is threadedly connected with the outer thread; the adjusting block is rotated to drive the thread clamping spring to be pressed down or moved up, so that the tightness is adjusted.

[0008] In the above description, as a further scheme, a bending position is arranged on one side of the mounting plate near the fixed thread clamping disc, and a thread inlet hole is arranged on the bending position near the fixed thread clamping disc; the sewing thread can pass through the thread inlet hole to enter between the fixed thread clamping disc and the movable thread clamping disc.

[0009] In the above description, as a further scheme, a top surface of the movable plate is distributed with a guide groove, the guide groove extends through in a direction of the mounting plate, a bottom surface of the mounting plate is provided with a limiting hole near a position of the guide groove, the limiting hole extends through in a direction of the guide groove, a limiting bolt is arranged on the movable plate near the guide groove, and a screw rod of the limiting bolt is threadedly connected with the limiting hole through the guide groove; the limiting bolt and the guide groove are used for limiting a moving distance of the movable plate.

[0010] In the above description, as a further scheme, the adjusting cylinder is arranged on a bottom surface of the mounting plate away from one end of the fixed thread clamping disc, a control through groove is arranged on one end of the mounting plate near the adjusting cylinder, a control block is movably arranged in the control through groove, and the adjusting cylinder is connected with the movable plate through the control block; the control block is used for connecting the adjusting cylinder and the movable plate.

[0011] Compared with the prior art, the utility model has the advantages that through the design of the movable plate and the adjusting cylinder, staggered distribution of the yoke with the inclined position on one end of the movable plate near the fixed thread clamping disc, distribution of the yoke between the fixed thread clamping disc and the movable thread clamping disc, when the multiple thread clamping devices need to be quickly adjusted, the adjusting cylinder is opened, the adjusting cylinder drives the movable plate to move, the movable plate drives the yoke to move between the fixed thread clamping disc and the movable thread clamping disc, when the clamping force of the fixed thread clamping disc and the movable thread clamping disc needs to be reduced, the movable plate drives the yoke to move between the fixed thread clamping disc and the movable thread clamping disc, the fixed thread clamping disc and the movable thread clamping disc are separated, the clamping force on the sewing thread is reduced, when the clamping force of the fixed thread clamping disc and the movable thread clamping disc needs to be increased, the yoke is moved away from the movable thread clamping disc, the movable thread clamping disc is reset by the thread clamping spring, the sewing thread is clamped again, the movable plate and the yoke can adjust the fixed thread clamping disc and the movable thread clamping disc on the multiple thread clamping devices, the thread clamping devices do not need to be adjusted separately, the adjustment process is simplified, and the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a three-dimensional structure schematic view of the overlock thread tightness adjusting mechanism of the utility model;

[0013] Figure 2 is another three-dimensional structure schematic view of the overlock thread tightness adjusting mechanism of the utility model from another perspective;

[0014] Figure 3 is a structure exploded schematic view of the overlock thread tightness adjusting mechanism of the utility model;

[0015] Figure 4 is a structure exploded schematic view of the thread clamping assembly in the overlock thread tightness adjusting mechanism of the utility model;

[0016] In the figure: 1 - mounting plate, 2 - fixed thread clamping disc, 3 - thread clamping spring, 4 - movable thread clamping disc, 5 - movable plate;

[0017] 6 - adjusting cylinder, 7 - shift fork, 8 - inclined position, 9 - mounting rod, 10 - avoiding hole, 11 - partition cover;

[0018] 12 - containing groove, 13 - movable hole, 14 - fine adjustment block, 15 - threaded hole, 16 - bending position, 17 - wire inlet hole;

[0019] 18 - guide groove, 19 - limiting hole, 20 - limiting bolt, 21 - control groove, 22 - control block. DETAILED DESCRIPTION

[0020] The utility model will be described in further detail below in combination with the drawings and specific embodiments.

[0021] In this embodiment, please refer to Figures 1-4 , a specific implementation of an overlock thread tightness adjusting mechanism, which comprises a mounting plate 1, a thread clamping assembly and an adjusting assembly, the thread clamping assembly and the adjusting assembly are both mounted on the mounting plate 1, the thread clamping assembly comprises a fixed thread clamping disc 2 and a thread clamping spring 3, the fixed thread clamping disc 2 is distributed at one end of the top surface of the mounting plate 1, a movable thread clamping disc 4 is movably mounted above the fixed thread clamping disc 2, the thread clamping spring 3 is arranged on the top surface of the movable thread clamping disc 4 and cooperates with the top surface of the movable thread clamping disc 4, the adjusting assembly comprises a movable plate 5 and an adjusting cylinder 6, the movable plate 5 is movably arranged at the middle part of the top surface of the mounting plate 1, the end of the movable plate 5 close to the fixed thread clamping disc 2 is staggered with shift forks 7, the shift forks 7 are distributed between the fixed thread clamping disc 2 and the movable thread clamping disc 4, the end of the shift fork 7 close to the fixed thread clamping disc 2 is provided with an inclined position 8, and the adjusting cylinder 6 is connected with the movable plate 5.

[0022] The middle part of the top surface of the fixed thread clamp disc 2 is provided with a mounting rod 9, the mounting rod 9 extends towards the direction of the thread clamping spring 3, the middle part of the movable thread clamp disc 4 is provided with an avoiding hole 10 near the position of the mounting rod 9, the middle part of the mounting rod 9 is provided with a partition cover 11 near the position of the thread clamping spring 3, and the bottom surface of the partition cover 11 is provided with a containing groove 12 matched with the thread clamping spring 3.

[0023] The top surface of the partition cover 11 is provided with a movable hole 13 matched with the mounting rod 9 near the position of the mounting rod 9, the top part of the mounting rod 9 is provided with external threads, the upper part of the partition cover 11 is provided with a fine adjustment block 14, the middle part of the fine adjustment block 14 is provided with a threaded hole 15 matched with the external threads near the position of the external threads, and the threaded hole 15 is threadedly connected with the external threads.

[0024] One side of the mounting plate 1 is provided with a bending position 16 near the position of the fixed thread clamp disc 2, and the bending position 16 is provided with a wire inlet hole 17 near the position of the fixed thread clamp disc 2.

[0025] The top surface of the movable plate 5 is provided with a guide groove 18 extending through in the direction of the mounting plate 1, the bottom surface of the mounting plate 1 is provided with a limiting hole 19 near the position of the guide groove 18, the limiting hole 19 extends through in the direction of the guide groove 18, the movable plate 5 is provided with a limiting bolt 20 near the position of the guide groove 18, and the screw rod of the limiting bolt 20 is threadedly connected with the limiting hole 19 through the guide groove 18.

[0026] The adjusting cylinder 6 is arranged at the bottom surface of the mounting plate 1 away from the fixed thread clamp disc 2, the mounting plate 1 is provided with a control through groove 21 at the position near the adjusting cylinder 6, the control through groove 21 is movably provided with a control block 22, and the adjusting cylinder 6 is connected with the movable plate 5 through the control block 22.

[0027] The working principle of the utility model is as follows: after the sewing thread is sent into the space between the fixed thread clamp disc 2 and the movable thread clamp disc 4 from the wire inlet hole 17, the fine adjustment block 14 is rotated, the fine adjustment block 14 drives the partition cover 11 and the thread clamping spring 3 to move downwards, and the movable thread clamp disc 4 is compressed tightly;

[0028] When it is needed to increase the clamping force of the fixed thread clamp disc 2 and the movable thread clamp disc 4, the adjusting cylinder 6 can be opened, the adjusting cylinder 6 drives the movable plate 5 and the fork 7 to move away from the movable thread clamp disc 4, the movable thread clamp disc 4 is reset and rebounds under the influence of the thread clamping spring 3, and the sewing thread is clamped continuously;

[0029] When it is needed to reduce the clamping force of the fixed thread clamp disc 2 and the movable thread clamp disc 4, the adjusting cylinder 6 is opened, the adjusting cylinder 6 drives the movable plate 5 and the fork 7 to move between the fixed thread clamp disc 2 and the movable thread clamp disc 4, the fixed thread clamp disc 2 and the movable thread clamp disc 4 are separated, and the clamping force on the sewing thread is reduced.

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0031] In addition, in the description of the embodiments of the present application, unless explicitly defined and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the description of the present application, it should be pointed out that the directions or position relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0032] Finally, it should be pointed out that: the above embodiments are only specific embodiments of the present application, which are used to illustrate the technical scheme of the present application, but not to limit it. The protection scope of the present application is not limited to this. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any skilled person in the art can modify or easily think of changes to the technical scheme recorded in the foregoing embodiments within the technical range disclosed by the present application, or make equivalent replacement to some of the technical features; and these modifications, changes or replacements do not make the corresponding technical scheme deviate from the spirit and scope of the technical scheme of the embodiments of the present application, and all should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A thread tension adjustment mechanism for a serger, comprising a mounting plate, a thread clamp assembly, and an adjustment assembly, characterized by: The thread clamping assembly and the adjusting assembly are both mounted on the mounting plate, the thread clamping assembly comprises fixed thread clamping discs and thread clamping springs, the fixed thread clamping discs are distributed on one end of the top surface of the mounting plate, the movable thread clamping discs are movably mounted above the fixed thread clamping discs, the thread clamping springs are arranged on the top surface of the movable thread clamping discs and cooperate with the top surface of the movable thread clamping discs, the adjusting assembly comprises a movable plate and an adjusting cylinder, the movable plate is movably arranged on the middle part of the top surface of the mounting plate, the end of the movable plate close to the fixed thread clamping discs is staggered with a plurality of yokes, the yokes are distributed between the fixed thread clamping discs and the movable thread clamping discs, and the end of the yoke close to the fixed thread clamping discs is provided with an inclined position, and the adjusting cylinder is connected with the movable plate.

2. A thread tension adjustment mechanism according to claim 1, wherein: The middle part of the top surface of the fixed thread clamping disc is provided with a mounting rod, the mounting rod extends towards the thread clamping spring, the middle part of the movable thread clamping disc is provided with an avoiding hole close to the mounting rod, and the middle part of the mounting rod is provided with a partition cover close to the thread clamping spring, and the bottom surface of the partition cover is provided with a containing groove matched with the thread clamping spring.

3. A thread tension adjustment mechanism according to claim 2, wherein: The top surface of the partition cover is provided with a movable hole matched with the mounting rod close to the mounting rod, the top part of the mounting rod is provided with external threads, the top surface of the partition cover is provided with a fine adjustment block, the middle part of the fine adjustment block is provided with a threaded hole matched with the external threads close to the external threads, and the threaded hole is threadedly connected with the external threads.

4. A thread tension adjustment mechanism according to claim 1, wherein: The side of the mounting plate close to the fixed thread clamping disc is provided with a bending position, and the bending position close to the fixed thread clamping disc is provided with a wire inlet hole.

5. A thread tension adjustment mechanism according to claim 1, wherein: The top surface of the movable plate is provided with a guide groove, the guide groove extends through and penetrates towards the mounting plate, the bottom surface of the mounting plate is provided with a limiting hole close to the guide groove, the limiting hole extends and penetrates towards the guide groove, the movable plate is provided with a limiting bolt close to the guide groove, and the screw rod of the limiting bolt is threadedly connected with the limiting hole through the guide groove.

6. A thread tension adjustment mechanism according to claim 1, wherein: The adjusting cylinder is arranged on the bottom surface of the mounting plate away from the fixed thread clamping disc, the end of the mounting plate close to the adjusting cylinder is provided with a control through groove, the control through groove is movably provided with a control block, and the adjusting cylinder is connected with the movable plate through the control block.

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