Device for bottom thread winder of safety air bag sewing machine

Abstract

The utility model discloses a device for a bottom line winder of a safety air bag sewing machine, which comprises a shuttle peg fixedly arranged on a winding base, the shuttle peg comprises an expansion part and a fixing part, two groups of fixing holes transversely penetrating through the fixing part are reserved in the fixing part, and the expansion part is fixedly arranged on the winding base. The fixing part is fixedly connected with the winding base through the fixing hole, the center of the top of the expansion part extends towards the fixing part to be provided with an open groove, the top end of the expansion part is provided with a size adjusting assembly, and the size adjusting assembly comprises connecting bases symmetrically arranged on the two sides of the open groove; adjusting rods are oppositely arranged on the connecting bases at intervals, and the adjusting rods are in internal threaded connection with the threaded sleeves. According to the utility model, the shuttle peg and the wire core are fixed by the size adjusting component instead of being fixed by a clamp spring, so that foreign matters are prevented from entering the safety air bag due to breakage of the clamp spring.

Description

Technical Field

[0001] The utility model belongs to the field of sewing machine equipment, in particular to a device for a bottom thread winder of a safety airbag bag sewing machine. Background Art

[0002] Airbags are an important part of the vehicle safety system. They are designed to protect passengers in the event of an accident. Airbags use gas inflators to expand rapidly to form a soft protective layer to reduce the direct impact between the passenger's body and the vehicle's internal components during a collision and minimize the risk of head, neck and chest injuries.

[0003] In the existing bobbin winder for sewing machines, the bobbin is usually fixed by a retaining spring. However, this design has an obvious disadvantage, that is, the retaining spring is easy to break after long-term use or under great pressure, thus causing the bobbin winder to fail and affecting the normal operation of the sewing machine. In addition, due to the breakage of the retaining spring, foreign matter is easy to enter the airbag, which in turn causes the production of the airbag to be unqualified. Therefore, how to prevent foreign matter from entering the airbag during the production of the airbag is an urgent problem to be solved. Utility Model Content

[0004] The utility model provides a device for a bottom thread winder of a safety airbag bag sewing machine, which can effectively solve the above problems.

[0005] The utility model is achieved in this way:

[0006] A device for a bottom thread winder of an airbag sewing machine comprises a bobbin fixedly mounted on a winding base, the bobbin comprising an expansion portion and a fixing portion, the fixing portion being provided with two groups of fixing holes that laterally penetrate the fixing portion, the fixing portion being fixedly connected to the winding base via the fixing holes, a slot being provided at the center of the top of the expansion portion extending toward the fixing portion, a size adjustment component being provided at the top of the expansion portion, the size adjustment component comprising connecting seats symmetrically arranged on both sides of the slot, adjusting rods being arranged on the connecting seats facing each other at intervals, and the adjusting rods being internally threadedly connected to a threaded sleeve.

[0007] As a further improvement, a scale mark is provided on the adjusting rod.

[0008] As a further improvement, the expansion portion is made of spring steel.

[0009] As a further improvement, a limiting block is provided at one end of the adjusting rod close to the threaded sleeve, and the limiting block is connected to the internal thread of the threaded sleeve.

[0010] As a further improvement, a lock seat is further provided on one side of the expansion portion, and the lock seat is adapted to the lock hole of the winding base.

[0011] The beneficial effects of the utility model are as follows: by improving the original method of fixing the bobbin and the thread core by a retaining spring to fixing the bobbin and the thread core by a size adjustment component, the breakage of the retaining spring causing foreign matter to enter the airbag is avoided, and the adjustability of the size adjustment component can also make the bobbin adapt to thread cores of different models, thereby enhancing the applicability of the bobbin. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a front view structural cross-sectional schematic diagram of a device for a bottom thread winder of a safety airbag bag sewing machine of the utility model;

[0014] Figure 2 yes Figure 1 A is a schematic diagram of the enlarged structure of the middle part;

[0015] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of B.

[0016] Reference numerals:

[0017] 1-expansion part, 101-slot, 102-locking seat, 2-fixing part, 201-fixing hole, 3-size adjustment component, 301-connecting seat, 302-adjusting rod, 303-threaded sleeve, 304-scale mark, 305-limiting block. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0019] In the description of the present invention, the terms "upper", "lower", "above", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] Reference Figure 1-3 As shown, this embodiment provides a device for a bottom thread winder of an air bag sewing machine, comprising:

[0021] A bobbin fixedly mounted on a winding base, the bobbin comprising an expansion portion 1 and a fixing portion 2, the fixing portion 2 being provided with two groups of fixing holes 201 which penetrate the fixing portion 2 transversely, the fixing portion 2 being fixedly connected to the winding base via the fixing holes 201, a slot 101 is provided at the center of the top of the expansion portion 1 extending toward the fixing portion 2, a size adjustment component 3 is provided at the top of the expansion portion 1, the size adjustment component 3 comprises connecting seats 301 symmetrically arranged on both sides of the slot 101, adjusting rods 302 are provided on the connecting seats 301 at intervals facing each other, and the adjusting rods 302 are internally threadedly connected to a threaded sleeve 303.

[0022] By improving the original method of fixing the bobbin core and the thread core by the retaining spring to fixing the bobbin core and the thread core by the size adjustment component 3, it is avoided that the retaining spring breaks and causes foreign matter to enter the airbag.

[0023] Secondly, through the adjustability of the size adjustment component 3, the bobbin can also be adapted to thread cores of different models, thereby enhancing the applicability of the bobbin.

[0024] Furthermore, the parts of the two groups of adjusting rods 302 located on the threaded sleeve 303 are respectively positive threads and negative threads.

[0025] By setting the threads of the two groups of adjusting rods 302 as positive and negative threads, the expansion part 1 can be expanded to both sides by rotating the threaded sleeve 303, thereby achieving a fixing effect for wire cores of different models.

[0026] Furthermore, a scale mark 304 is provided on the adjusting rod 302 .

[0027] By setting a scale mark 304 on the adjustment rod 302, it is more convenient for workers to expand the expansion part 1 according to a specific type of wire core, so that the expansion adjustment of the expansion part 1 is more accurate.

[0028] Furthermore, the expansion portion 1 is made of spring steel.

[0029] By using spring steel as the expansion part 1 , the expansion part 1 can have certain rigidity and certain adjustable flexibility.

[0030] Furthermore, a limiting block 305 is disposed at one end of the adjusting rod 302 close to the threaded sleeve 303 , and the limiting block 305 is connected to the inner thread of the threaded sleeve 303 .

[0031] By providing the limit block 305 , it is possible to avoid the problem that the adjusting rod 302 rotates out of the threaded sleeve 303 when the threaded sleeve 303 is rotated to adjust the expansion part 1 , thereby causing the threaded sleeve 303 to fly into the airbag.

[0032] Furthermore, a lock seat 102 is provided on one side of the expansion portion 1, and the lock seat 102 is adapted to the lock hole of the winding base.

[0033] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for a bottom thread winder of an air bag sewing machine, characterized in that: It includes a bobbin fixedly installed on a winding base, the bobbin includes an expansion part and a fixing part, the fixing part is reserved with two groups of fixing holes that transversely penetrate the fixing part, the fixing part is fixedly connected to the winding base through the fixing holes, a groove is extended from the center of the top of the expansion part toward the fixing part, a size adjustment component is provided at the top of the expansion part, the size adjustment component includes connecting seats symmetrically arranged on both sides of the groove, the connecting seats are provided with adjusting rods spaced apart from each other, and the internal thread of the adjusting rod is connected to the threaded sleeve.

2. The device for the bottom thread winder of the air bag sewing machine according to claim 1, characterized in that: The adjusting rod is provided with a scale mark.

3. The device for the bottom thread winder of the air bag sewing machine according to claim 1, characterized in that: The expansion portion is spring steel.

4. The device for the bottom thread winder of the air bag sewing machine according to claim 1, characterized in that: A limiting block is arranged at one end of the adjusting rod close to the threaded sleeve, and the limiting block is connected with the inner thread of the threaded sleeve.

5. The device for the lower thread winder of the air bag sewing machine according to claim 1, characterized in that: A lock seat is also provided on one side of the expansion portion, and the lock seat is adapted to the lock hole of the winding base.

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