Elastic sewing device and sewing machine

Abstract

The utility model discloses an elastic sewing device and a sewing machine. The elastic sewing device comprises a pressing plate, a feeding bottom plate located below the pressing plate and used for driving an elastic to advance, and a supporting plate located between the pressing plate and the feeding bottom plate. The supporting plate is used for bearing elastic pieces, and a sewing channel allowing the elastic pieces to pass through is formed between the pressing plate and the supporting plate. The side, close to the supporting plate, of the material pressing plate comprises an adhesive tape receding groove formed in a sunken mode, and the adhesive tape receding groove is communicated with the sewing channel and extends in the advancing direction of the elastic piece. The feeding bottom plate comprises a bottom plate body and feeding teeth arranged on the bottom plate body, and the feeding teeth are located on the side, close to the supporting plate, of the bottom plate body and protrude out of the bottom plate body. The supporting plate comprises through grooves correspondingly matched with the feeding teeth, and the feeding teeth upwards penetrate out of the through grooves to act on the elastic pieces located on the supporting plate so as to drive the elastic pieces to advance. The production cost can be effectively reduced, the production efficiency is improved, the waste of personnel cost is reduced, and the production environment is improved.

Description

Technical Field

[0001] The utility model relates to the field of female underwear sewing equipment, and more specifically, to a sew-and-sew device and a sewing machine. Background Art

[0002] A strapless bra is a specially designed bra that can perfectly match various fashionable clothing such as off-shoulder, suspender, and one-shoulder clothing. Especially when attending special occasions such as dinner parties, dances, and weddings, a strapless bra is an ideal inner wear option for dresses, wedding gowns, and other clothing. It can avoid the embarrassment of exposed shoulder straps of traditional underwear, and also avoid the discomfort of shoulder straps pressing on the shoulders.

[0003] Since strapless bras have no shoulder straps, in order to increase the support and stability of the bra, anti-slip hems are usually sewn on the stress-bearing parts of the bra when it is worn during design and production to increase the friction between the bra and the skin. Anti-slip hems are hems with one or more rubber strips attached to the surface. The rubber strips have a large friction coefficient and can achieve the purpose of anti-slip and stability. They are used in both ordinary bras and strapless bras.

[0004] Although the anti-skid thread has a good anti-skid effect, its high friction coefficient brings troubles to production. In the traditional production process, in order to ensure that the anti-skid thread can be sewn smoothly, the most common method is to apply powder to the rubber strip of the anti-skid thread to reduce the friction between the rubber strip and the sewing device during the sewing process, and then clean up the residual powder on the product after sewing. This method not only increases production costs and reduces production efficiency, but also damages the production environment. Being in a dusty environment for a long time will have adverse effects on the health of operators. Utility Model Content

[0005] In view of the above problems, one object of the present utility model is to provide a thread-stitching device.

[0006] Another object of the utility model is to provide a sewing machine comprising a one-by-one sewing device.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] According to one aspect of the utility model, there is provided a root sewing device, comprising:

[0009] A pressing plate, a feeding bottom plate located below the pressing plate and used to drive the root to move forward, and a supporting plate located between the pressing plate and the feeding bottom plate;

[0010] The support plate is used to support the sewing thread, and a sewing channel for the sewing thread to pass through is included between the pressing plate and the support plate;

[0011] The side of the pressing plate close to the supporting plate includes a rubber strip avoidance groove formed by a depression, the rubber strip avoidance groove is communicated with the sewing channel and is extended along the traveling direction of the thread root;

[0012] The feeding bottom plate includes a bottom plate and feeding teeth arranged on the bottom plate, wherein the feeding teeth are located on a side of the bottom plate close to the support plate and protrude from the bottom plate;

[0013] The support plate includes a through slot corresponding to the feeding teeth, and the feeding teeth pass through the through slot upwards to act on the root of the rod located on the support plate to drive the root of the rod to move forward.

[0014] In addition, an optional solution is that the base plate includes a clearance portion arranged corresponding to the position of the rubber strip on the root to be sewn, and the clearance portion is not provided with feeding teeth.

[0015] In addition, an optional solution is that the feed end of the pressing plate includes a material guiding slope, and the material guiding slope is provided with a strip-shaped adjustment hole;

[0016] The material guiding inclined surface is provided with an adjusting position, and the adjusting position is fixed in the strip-shaped adjusting hole by means of bolts.

[0017] In addition, an optional solution is that the adjustment position includes a material guide block and a limiting rod, the material guide block includes a groove portion arranged corresponding to the rubber strip avoidance groove on the pressure plate, and a feeding gap is formed between the material guide block and the limiting rod for the rubber strip to pass through.

[0018] In addition, an optional solution is that a connecting handle is fixedly connected to the side of the pressing plate away from the supporting plate, and the connecting handle is an L-shaped structure, including a horizontally arranged connecting portion and a vertically arranged connecting portion, and the connecting portion is fixedly connected to the pressing plate;

[0019] The connecting part comprises a slot formed by a concave end of the connecting part away from the combining part, and a connecting hole opened in the center of the connecting part. The connecting part is connected to the sewing machine through the slot and the connecting hole.

[0020] In addition, an optional solution is that the pressing plate is provided with a first pinhole penetrating the upper and lower surfaces of the pressing plate;

[0021] The support plate is provided with a second pinhole penetrating the upper and lower surfaces of the support plate;

[0022] The positions of the first pinhole and the second pinhole correspond to each other.

[0023] In addition, an optional solution is that the position of the bottom plate corresponding to the second needle hole includes an avoidance portion, and no feeding teeth are provided at the avoidance portion.

[0024] In addition, an optional solution is that the width of the rubber strip avoidance groove is greater than the width of the rubber strip on the end to be sewn, and the difference is 0.5-2mm.

[0025] In addition, an optional solution is that the depth of the rubber strip avoidance groove is greater than the thickness of the rubber strip on the end to be sewn, and the difference is 0.2-2mm.

[0026] According to another aspect of the utility model, a sewing machine is provided, comprising a machine needle, a feed drive, and a sewing device, wherein the feed drive is connected to the feed base plate.

[0027] The beneficial effects of the utility model are as follows:

[0028] In view of the technical problems existing in the prior art, the utility model provides a sewing device and a sewing machine for the root, which effectively eliminates the friction between the anti-slip root and the sewing device during the sewing process by improving the structure of the pressing plate, avoids the influence of the rubber strip on the sewing speed and sewing quality, and can directly save the two processes of powdering and cleaning powder, which can effectively reduce production costs, improve production efficiency, reduce waste of personnel costs, and improve the production environment. By comparison, the use of the sewing device for the root of the anti-slip root can save about 19 seconds of time per product compared with the traditional process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0030] Figure 1 The schematic diagram of the structure of the sewing device for one-by-one stitches provided by the embodiment of the utility model is shown.

[0031] Figure 2 A schematic structural diagram of a material holding plate provided in an embodiment of the utility model is shown.

[0032] Figure 3 A schematic diagram showing the feeding side of the pressing plate provided in an embodiment of the utility model is shown.

[0033] Figure 4 A schematic structural diagram of a support plate provided in an embodiment of the utility model is shown.

[0034] Figure 5 A schematic structural diagram of a feeding bottom plate provided in an embodiment of the utility model is shown.

[0035] Figure 6 A schematic diagram showing the joint without adhesive strip at the joint of the sewing device provided by an embodiment of the utility model during sewing is shown.

[0036] Figure 7 A schematic diagram showing the location of the rubber strip at the root of the sewing device provided by an embodiment of the utility model during sewing. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0038] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly stipulated and limited, the first feature being "on" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them.

[0040] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0041] Since strapless bras have no shoulder straps, in order to increase the support and stability of the bra, anti-slip hems are usually sewn on the stress-bearing parts of the bra when it is worn during design and production to increase the friction between the bra and the skin. Anti-slip hems are hems with one or more rubber strips attached to the surface. The rubber strips have a large friction coefficient and can achieve the purpose of anti-slip and stability. They are used in both ordinary bras and strapless bras.

[0042] Although the anti-skid thread has a good anti-skid effect, its high friction coefficient brings troubles to production. In the traditional production process, in order to ensure that the anti-skid thread can be sewn smoothly, the most common method is to apply powder to the rubber strip of the anti-skid thread to reduce the friction between the rubber strip and the sewing device during the sewing process, and then clean up the residual powder on the product after sewing. This method not only increases production costs and reduces production efficiency, but also damages the production environment. Being in a dusty environment for a long time will have adverse effects on the health of operators.

[0043] In view of the defects of the prior art, the utility model provides a hem sewing device for anti-slip hem sewing. Figure 1-7 As shown, the sewing device includes a pressing plate 1, a feeding base plate 2 and a supporting plate 3.

[0044] The support plate 3 is located between the pressing plate 1 and the feeding bottom plate 2, the pressing plate 1 is located above the support plate 3, and the feeding bottom plate 2 is located below the support plate 3. The support plate 3 is used to carry the root 100, and the feeding bottom plate 2 is used to drive the root 100 on the support plate 3 to move forward.

[0045] The pressing plate 1 and the supporting plate 3 include a sewing passage for the thread 100 to pass through. Figure 6 As shown, the thread 100 gradually enters the sewing channel and is pressed against the support plate 3 by the pressing plate 1 to fix the thread 100, so as to prevent the thread 100 from shifting during the sewing process and affecting the yield rate. The feeding base plate 2 drives the thread 100 forward in the time interval between two needles to ensure that the thread 100 moves forward steadily and accurately during the sewing process and ensure that the needle drops evenly.

[0046] The side of the press plate 1 close to the support plate 3 includes a rubber strip avoidance groove 11 formed by an upward depression. The rubber strip avoidance groove 11 is connected to the sewing channel and extends along the travel direction of the root 100. The rubber strip avoidance groove 11 corresponds to the number and position of the rubber strips 200 on the root 100. For example, if the root 100 is provided with one rubber strip 200, the press plate 1 includes one rubber strip avoidance groove 11; if the root 100 is provided with two rubber strips 200, then the press plate 1 is correspondingly provided with two rubber strip avoidance grooves 11. When sewing, if Figure 7 As shown, the root 100 enters the sewing channel, and the rubber strip 200 is accommodated in the rubber strip avoidance groove 11. The pressing plate 1 applies a downward pressing force to the root 100. Due to the existence of the rubber strip avoidance groove 11, the pressing plate 1 does not contact the rubber strip 200, which can effectively eliminate the friction between the rubber strip 200 and the sewing device when sewing the root, eliminating the two processes of sprinkling powder and cleaning powder, saving process costs, improving work efficiency, and improving the production environment.

[0047] The feeding bottom plate 2 includes a bottom plate 21 and feeding teeth 22 disposed on the bottom plate 21 . The feeding teeth 22 are located on a side of the bottom plate 21 close to the supporting plate 3 and protrude from the bottom plate 21 .

[0048] The support plate 3 includes a through slot 31 corresponding to the feeding teeth 22, and the feeding teeth 22 pass upward through the through slot 22. The feeding teeth 22 are sharp corners, acting on the bottom surface of the root 100 (i.e., the side without the rubber strip), and pushing the root 100 on the support plate 3 forward through friction.

[0049] The through slot 31 is mainly used to avoid the feeding teeth 22. In a specific example, the width of the through slot 31 is greater than the width of the feeding teeth 22, and the difference is 0.2-1 mm.

[0050] In one embodiment, Figure 5 As shown, the bottom plate 21 includes a clearance portion 23 provided at the position of the rubber strip 200 on the thread 100 to be sewn, and the clearance portion 23 is not provided with the feeding teeth 22. Accordingly, the position corresponding to the clearance portion 23 on the support plate 3 is not provided with a through groove. Specifically, on the support plate 3, a through groove 31 is provided at a portion corresponding to the feeding teeth 22 so that the feeding teeth 22 can contact with the thread 100 to push the thread 100, and the portion corresponding to the clearance portion 23 is in the original flat plate state, which is used to provide support for the thread 100, and prevent the rubber strip 200 from contacting with the pressing plate 1 during sewing and feeding the cloth to increase the friction, thereby affecting the sewing effect and sewing efficiency.

[0051] In one embodiment, Figure 2 As shown, the feed end of the press plate 1 includes a guide slope 12, which is inclined and used to guide the thread 100 to be sewn into the sewing channel. A strip-shaped adjustment hole 121 is provided on the guide slope 12, and an adjustment position 13 is configured through the strip-shaped adjustment hole 121. The adjustment position 13 is detachably fixed in the strip-shaped adjustment hole 121 by a bolt 14. By loosening the bolt 14, the adjustment position 13 can be adjusted along the strip-shaped adjustment hole 121 to adjust the position of the adjustment position 13 relative to the press plate 1, thereby ensuring the accuracy of the position during feeding.

[0052] In this embodiment, the adjustment position 13 includes a guide block 131 and a limit rod 132 arranged in parallel. The guide block 131 includes a groove portion 1310 arranged corresponding to the rubber strip avoidance groove 11 on the pressure plate 1. The groove portion 1310 is used to accommodate the rubber layer 200 on the root to be sewn. The guide block 131 and the limit rod 132 directly form a feeding gap for the root 100 to pass through. The feeding gap is connected to the sewing channel. The root to be sewn enters through the feeding gap and enters the sewing gap along the guide slope 12. During the feeding process, the limit rod 132 is located at the bottom of the root to be sewn, which is used to provide support for the root to be sewn to ensure that the root to be sewn can enter the sewing channel smoothly and stably.

[0053] In a specific embodiment, Figure 2 As shown, a connecting handle is fixedly connected to the side of the pressing plate 1 away from the supporting plate 3. The connecting handle is an L-shaped structure, including a horizontally arranged connecting portion 151 and a vertically arranged connecting portion 152. The connecting portion 151 is arranged parallel to the pressing plate 1 and is fixedly connected to the pressing plate 1.

[0054] The connecting portion 152 is arranged perpendicular to the connecting portion 151, and is used to realize the installation of the sewing device on the sewing machine. Specifically, the connecting portion 152 includes a slot 1521 formed by a downward depression of one end of the connecting portion 152 away from the connecting portion 151 (i.e., the top of the connecting portion), and a connecting hole 1522 opened at the center of the connecting portion 152. The slot 1521 and the connecting hole 1522 are respectively connected to corresponding parts of the sewing machine to ensure the accuracy of the installation of the sewing device.

[0055] In one embodiment, the press plate 1 is provided with a first needle hole 16 penetrating the upper and lower surfaces of the press plate 1, and the first needle hole 16 is used for the lower needle of the machine needle to pierce the root 100 located below the press plate 1. Correspondingly, the support plate 3 is provided with a second needle hole 32 penetrating the upper and lower surfaces of the support plate 3, and the second needle hole 32 corresponds to the position of the first needle hole 16, so that the machine needle can pierce the root 100 to complete the sewing action.

[0056] Further, such as Figure 5 As shown, the position of the bottom plate 21 corresponding to the second needle hole 32 includes an avoidance portion 24, no feeding teeth 22 are provided at the avoidance portion 24, and the avoidance portion 24 is recessed in the surface of the bottom plate 21 to prevent the needle from being broken by collision during the sewing process.

[0057] In one embodiment, the width of the rubber strip avoidance groove 11 is greater than the width of the rubber strip 200 on the thread 100 to be sewn, and specifically, the difference between the two is 0.5-2 mm. This design can ensure that the left and right sides of the rubber strip 200 will not contact the groove wall of the rubber strip avoidance groove 11 during sewing, thereby avoiding the friction between the rubber strip 200 and the pressing plate 1 from causing adverse effects on sewing.

[0058] In one embodiment, the depth of the rubber strip avoidance groove 11 is greater than the thickness of the rubber strip 200 on the thread 100 to be sewn, and specifically, the difference between the two is 0.2-2 mm. This design can ensure that the surface of the rubber strip 200 will not contact the bottom of the rubber strip avoidance groove 11 during sewing, thereby avoiding the friction between the rubber strip 200 and the pressing plate 1 from causing adverse effects on sewing.

[0059] In one embodiment, the support plate 3 comprises a first mounting hole 33 , through which the support plate 3 can be mounted and fixed to the sewing machine.

[0060] In one embodiment, a second mounting hole 25 is formed on the bottom plate 21 , and the feeding bottom plate 2 can be mounted and fixed to the sewing machine through the second mounting hole 25 .

[0061] When sewing the anti-skid thread, first install the feed base plate 2, the support plate 3 and the presser foot plate 1 on the sewing machine in sequence, and adjust the relative positions of the three so that they are installed in place and the needle can operate normally. Then, the thread 100 is inserted into the sewing channel at the bottom of the press plate 1 through the feed gap between the guide block 131 and the limit rod 132, and the position of the adjustment position 13 on the guide slope 12 is adjusted so that the rubber strip 200 on the thread 100 is completely accommodated in the rubber strip avoidance groove 11, and then the bolt 14 is tightened to fix the position of the adjustment position 13, and then a trial sewing is performed, the length of the trial sewing is about 5cm, and the trial sewing effect is checked. If there is no problem, formal sewing can be carried out. If the trial sewing effect does not meet the requirements, it is necessary to readjust the positions of the press plate 1, the support plate 3, the feed base plate 2 and the adjustment position 13, and then a trial sewing is performed again until the desired sewing effect is achieved.

[0062] Another embodiment of the utility model provides a sewing machine, which includes a needle 5, a feed drive and the length sewing device provided in the above embodiment. The feed drive is connected and fixed to the feed base plate 2, and is used to drive the feed base plate 2 so that the feed base plate 2 can realize the driving of the length to be sewn.

[0063] The sewing device and sewing machine provided by the embodiment of the utility model improve the structure of the pressing plate, effectively eliminate the friction between the anti-slip root and the sewing device during the sewing process, avoid the influence of the rubber strip on the sewing speed and sewing quality, and can directly save the two processes of powdering and cleaning powder, which can effectively reduce production costs, improve production efficiency, reduce waste of personnel costs, and improve the production environment. By comparison, the use of the sewing device for sewing anti-slip roots can save about 19 seconds of time per product compared with the traditional process.

[0064] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A root sewing device, characterized in that: include: A pressing plate, a feeding bottom plate located below the pressing plate and used to drive the root to move forward, and a supporting plate located between the pressing plate and the feeding bottom plate; The support plate is used to support the sewing thread, and a sewing channel for the sewing thread to pass through is included between the pressing plate and the support plate; The side of the pressing plate close to the supporting plate includes a rubber strip avoidance groove formed by a depression, the rubber strip avoidance groove is communicated with the sewing channel and is extended along the traveling direction of the thread root; The feeding bottom plate includes a bottom plate and feeding teeth arranged on the bottom plate, wherein the feeding teeth are located on a side of the bottom plate close to the support plate and protrude from the bottom plate; The support plate includes a through slot corresponding to the feeding teeth, and the feeding teeth pass through the through slot upwards to act on the root of the rod located on the support plate to drive the root of the rod to move forward.

2. The root sewing device according to claim 1, characterized in that: The bottom plate comprises a clearance portion arranged corresponding to the position of the rubber strip on the root to be sewn, and the clearance portion is not provided with feeding teeth.

3. The root sewing device according to claim 1, characterized in that: The feed end of the pressing plate comprises a material guiding inclined surface, and the material guiding inclined surface is provided with a strip-shaped adjustment hole; The material guiding inclined surface is provided with an adjusting position, and the adjusting position is fixed in the strip-shaped adjusting hole by means of bolts.

4. The root sewing device according to claim 3, characterized in that: The adjusting position includes a material guide block and a limiting rod, the material guide block includes a groove portion arranged corresponding to the rubber strip avoidance groove on the pressing plate, and a feeding gap for the rubber strip to pass through is formed between the material guide block and the limiting rod.

5. The root sewing device according to claim 1, characterized in that: A connecting handle is fixedly connected to one side of the pressing plate away from the supporting plate, and the connecting handle is an L-shaped structure, including a horizontally arranged connecting portion and a vertically arranged connecting portion, and the connecting portion is fixedly connected to the pressing plate; The connecting part comprises a slot formed by a concave end of the connecting part away from the combining part, and a connecting hole opened in the center of the connecting part. The connecting part is connected to the sewing machine through the slot and the connecting hole.

6. The root sewing device according to claim 1, characterized in that: The pressing plate is provided with a first pinhole penetrating through the upper and lower surfaces of the pressing plate; The support plate is provided with a second pinhole penetrating the upper and lower surfaces of the support plate; The positions of the first pinhole and the second pinhole correspond to each other.

7. The root sewing device according to claim 6, characterized in that: The position of the bottom plate corresponding to the second needle hole includes an avoidance portion, and no feeding teeth are arranged at the avoidance portion.

8. The thread-jointed sewing device according to claim 1, characterized in that: The width of the rubber strip avoidance groove is greater than the width of the rubber strip on the end to be sewn, and the difference is 0.5-2mm.

9. The thread-jointed sewing device according to claim 1, characterized in that: The groove depth of the rubber strip avoidance groove is greater than the thickness of the rubber strip on the end to be sewn, and the difference is 0.2-2mm.

10. A sewing machine, characterized in that: It comprises a machine needle, a feed drive, and a joint sewing device as described in any one of claims 1 to 9, wherein the feed drive is connected to the feed base plate.

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