Improved front trouser pocket welt sewing device

Abstract

The utility model discloses an improved front trouser pocket welt sewing device which comprises a machine base, a connecting plate, a supporting seat, a material pressing plate, a material folding plate, a small material pressing plate, a supporting seat driving mechanism, a material folding driving mechanism, a material pressing plate driving mechanism and a small material pressing plate driving mechanism. The tail ends of the material pressing plates are fixedly connected to the two sides of the connecting plate, pressing grooves are formed in the front ends of the material pressing plates, and the small material pressing plate driving mechanism comprises a shaft seat, a first swing driving device and a second swing driving device. The first swing driving device and the second swing driving device can drive the small material pressing plate to swing up and down and achieve lifting to loosen the cloth or falling to press the cloth. According to the utility model, the two sides of the small material pressing plate can uniformly apply pressure to cloth when swinging up and down, the precision and consistency of a knitting needle in the sewing process are ensured, a sewing thread is smoother and more attractive, the cloth is effectively prevented from stretching and deforming in the flanging process, wrinkles are avoided, the efficiency is high, and the quality is good.

Description

Technical Field

[0001] This utility model relates to the field of sewing technology, and more specifically, to an improved front trouser pocket edge-sealing device. Background Technology

[0002] Trousers typically feature front and back pockets, with the pocket openings usually sewn with facings to prevent deformation and wear, while also enhancing the appearance. During manufacturing, the pocket lining, trouser panels, and facings are sewn together, then turned inside out and sewn together in adjacent areas to conceal raw edges and smooth the facings. Currently, the commonly used manual sewing method is inefficient and prone to wrinkles and uneven stitching. With the development of sewing equipment, some automated devices have emerged that allow manual feeding and turning of the facings. The pocket lining, trouser panels, and facings are manually pressed together and fed to the sewing machine for sewing, significantly improving efficiency and standardizing stitch length. However, manual turning still results in wrinkles, affecting overall processing efficiency and compromising product quality. Therefore, the front pocket facing sewing device has been developed.

[0003] For example, utility model patent application number CN202120103091.7 discloses a novel front trouser pocket edge-sealing device, including a base, a connecting plate, a sewing head, a flanging frame, and a displacement transmission mechanism. The displacement transmission mechanism includes a first drive mechanism, a support base, and an upper shaft. The support base is movably mounted on the front side of the connecting plate. Bearings are fixed at both ends of the upper shaft, and these bearings are rotatably mounted on the rotating shafts on both sides of the support base. The edge-sealing plate is fixed on the upper shaft and located within a pressure groove. The output shaft of the first drive mechanism is connected to the upper shaft, driving the upper shaft to swing back and forth, thereby causing the edge-sealing plate to lift up, loosen, or press the fabric. Because this patent only has a single first drive mechanism connected to the upper shaft and driving its back-and-forth swing, the pressure applied to both sides of the edge-sealing plate will be uneven. This will lead to uneven fabric tension during the sewing process, affecting the quality and consistency of the sewing. It may also cause sudden travel or jamming of the edge-sealing plate, affecting the stability of the equipment operation. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned defects in the prior art and provide an improved front trouser pocket edge-sealing device that can achieve uniform pressure on the fabric, ensure the accuracy and consistency of the knitting needles during the sewing process, avoid fabric stretching and deformation during the hemming process, prevent wrinkles, and has high processing efficiency.

[0005] To achieve the above objectives, this utility model provides an improved front trouser pocket edge-sealing device, including a base, a connecting plate, a support base, a pressure plate, a folding plate, a small pressure plate, a support base drive mechanism, a folding drive mechanism, a pressure plate drive mechanism, and a small pressure plate drive mechanism. The connecting plate is fixedly connected to the front end of the base, and the ends of the pressure plate are fixedly connected to both sides of the connecting plate. A pressure groove is formed at the front end of the pressure plate. The small pressure plate drive mechanism is fixedly mounted on the base and can drive the small pressure plate to swing up and down in the pressure groove. The support base is horizontally movable in front of the top of the connecting plate. The support base drive mechanism is fixedly mounted on the base and can drive the support base to move back and forth. The folding drive mechanism is fixedly mounted on both sides of the end of the pressure plate. The material is arranged along the length of the pressing groove and driven by a material folding drive mechanism to move back and forth in the pressing groove in front of the pressing plate. The pressing plate drive mechanism includes a bearing seat, a first swing drive device, and a second swing drive device. The first and second swing drive devices are respectively fixedly mounted on the machine base. The output shafts of the first and second swing drive devices are respectively connected to the pressing plate through the upper end of their respective bearing seats. The lower ends of the two bearing seats are respectively rotatably connected to the rotating shafts extending from both ends of the support seat. The support seat drive mechanism can drive the support seat to move back and forth, thereby driving the pressing plate to move back and forth. The first and second swing drive devices can drive the pressing plate to swing up and down, thereby lifting to loosen the fabric or lowering to press the fabric.

[0006] Preferably, the pressure plate driving mechanism includes a support frame, a pressure plate lifting device, a first connecting rod, a second connecting rod, a pin, and a socket. The support frames are respectively arranged parallel and vertically on the front side of the machine base. The pressure plate lifting device is respectively fixedly arranged at both ends of the rear side of the machine base. The middle part of the first connecting rod is hinged to the two support frames respectively. One end of the first connecting rod is drivenly connected to the output shaft of the pressure plate lifting device. The other end of the first connecting rod is respectively hinged to one end of the second connecting rod. One end of the pin is rotatably connected to the other end of the second connecting rod. Two sockets are provided, which are parallel to the second connecting rod and fixedly connected to the front end of the pressure plate. The sockets are provided with through holes arranged along their length direction. The other ends of the pins are respectively inserted into the through holes. The pressure plate lifting device can drive the pressure plate to rise or fall through the first connecting rod and the second connecting rod.

[0007] Preferably, it also includes an abutment plate. Both the pressure plate and the connecting plate are configured as elastic plates. The pressure plate has a U-shaped structure. The abutment plate is horizontally fixed at the front end of the top of the machine base. The bottom surfaces of the two sides of the front end of the pressure plate are inclined downwards and abut against the extensions at both ends of the abutment plate.

[0008] Preferably, the folding drive mechanism includes a first folding cylinder, a second folding cylinder, a folding connecting plate, limiting bolts, and a guide slide plate. Guide grooves are respectively formed on both sides of the pressure plate. The guide slide plates are movably positioned in their respective guide grooves. The first folding cylinder has its output shaft fixed to the pressure plate and located at the end of the guide groove. The second folding cylinder is connected to the first folding cylinder, and their output shafts are offset and reversed. The second folding cylinder is fixedly mounted on its respective guide slide plate. Two folding connecting plates are provided and fixedly connected to both sides of the folding plate. The folding connecting plate has a waist-shaped groove along its length. The output shafts of the second folding cylinders are drively connected to their respective folding connecting plates and drive them to move back and forth. The limiting bolts are fixed parallel to the moving direction of the folding connecting plate in their respective waist-shaped grooves and can limit the back-and-forth movement of the folding connecting plate.

[0009] Preferably, the support base driving mechanism includes a support base driving device, a slide rail, and a slider. The support base driving device is fixedly mounted on the top surface of the machine base. The slide rail is fixedly mounted in the middle of the pressure plate and located below the rear end of the support base. The output shaft of the support base driving device is connected to the rear end of the support base for transmission. The bottom of the rear end of the support base is slidably connected to the slide rail via the slider.

[0010] Preferably, the device also includes a limiting block for limiting the backward movement of the support seat, wherein two limiting blocks are provided and are respectively fixedly installed on the front end of the top of the connecting plate.

[0011] Preferably, both the first swing drive device and the second swing drive device are configured as pneumatic cylinders or hydraulic cylinders.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This utility model has a simple, stable, and reliable structure. Through the coordinated action of the first and second swing drive devices, it ensures that the two sides of the pressure plate can apply uniform pressure to the fabric when swinging up and down, guaranteeing the high precision and consistency of the knitting needles during the sewing process. This results in a smoother and more aesthetically pleasing sewing line, reducing sewing defects. Furthermore, the folding drive mechanism precisely drives the movement of the folding plate, effectively preventing the fabric from stretching and deforming during the folding process, thus avoiding wrinkles. This results in high processing efficiency and good finished product quality. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of an improved front trouser pocket edge-sealing device provided in an embodiment of this utility model. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of an improved front trouser pocket edge-sealing device provided in an embodiment of this utility model. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the bottom structure of an improved front trouser pocket edge-sewing device provided in an embodiment of this utility model. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Please refer to Figure 1 The present invention provides an improved front trouser pocket edge-sealing device, including a base 1, a connecting plate 2, a support base 3, a pressing plate 4, a folding plate 5, a pressing small plate 6, a support base drive mechanism 31, a folding drive mechanism 51, a pressing plate drive mechanism 41, and a pressing small plate drive mechanism 61, etc. The components of this embodiment will be described in detail below with reference to the accompanying drawings.

[0020] like Figure 1As shown, the connecting plate 2 can be fixedly connected to the front end of the base 1, the end of the pressure plate 4 is fixedly connected to both sides of the connecting plate 2, the front end of the pressure plate 4 is provided with a pressure groove 401, the small material plate driving mechanism 61 is fixedly installed on the base 1 and can drive the small material plate 6 to swing up and down in the pressure groove 401, the support seat 3 is horizontally movably installed in front of the top of the connecting plate 2, the support seat driving mechanism 31 is fixedly installed on the base 1 and can drive the support seat 3 to move back and forth, the folding material driving mechanism 51 is fixedly installed on both sides of the end of the pressure plate 4, the folding material plate 5 is set along the length direction of the pressure groove 401 and is driven by the folding material driving mechanism 51 to move back and forth in the pressure groove 401 in front of the small material plate 6.

[0021] Specifically, the pressing plate drive mechanism 61 may include a bearing seat 611, a first swing drive device 612, and a second swing drive device 613. The first swing drive device 612 and the second swing drive device 613 are respectively fixedly mounted on the base 1. The output shafts of the first swing drive device 612 and the second swing drive device 613 are respectively connected to the pressing plate 6 via the upper end of their respective bearing seats 611. The lower ends of the two bearing seats 611 are respectively rotatably connected to the rotating shafts extending from both ends of the support seat 3. The support seat drive mechanism 31 can drive the support seat 3 to move back and forth, thereby driving the pressing plate 6 to move back and forth. The first swing drive device 612 and the second swing drive device 613 can drive the pressing plate 6 to swing up and down, thereby lifting to loosen the fabric or lowering to press the fabric.

[0022] Furthermore, the support base drive mechanism 31 may include a support base drive device 311, a slide rail 312, and a slider 313. The support base drive device 311 is fixedly mounted on the top surface of the machine base 1, the slide rail 312 is fixedly mounted in the middle of the pressure plate 4 and located below the rear end of the support base 3, the output shaft of the support base drive device 311 is connected to the rear end of the support base 3 for transmission, and the bottom of the rear end of the support base 3 is slidably connected to the slide rail 312 through the slider 313.

[0023] Preferably, it may also include a limiting block 314 for limiting the backward movement of the support 3, wherein two limiting blocks 314 are provided and are respectively fixedly disposed at the front end of the top of the connecting plate 2.

[0024] Preferably, both the first swing drive device 612 and the second swing drive device 613 can be configured as a pneumatic cylinder or a hydraulic cylinder.

[0025] Among them, the pressure plate 4 has a pressure groove 401 at its front end, which limits the range of motion of components such as the pressure plate 6 and the folding plate 5, and works with the pressure plate 6 and other components to press the fabric, assisting in the fixing of the fabric and other operations.

[0026] In this embodiment, the side of the pressing plate 6 facing the fabric can also be provided with anti-slip teeth to enhance the pressing strength, so as to better fix the fabric.

[0027] In specific implementation, firstly, the support seat drive device 311 drives the support seat 3 to move forward between the machine base 1 and the pressure plate 4 along the slide rail 312. Since the support seat 3 and the pressure plate 6 are connected by a structure such as the shaft seat 611, the pressure plate 6 also moves forward to a suitable position, so that the knitting needle can directly approach the pressure plate 6. At this time, the first swing drive device 612 and the second swing drive device 613 control the pressure plate 6 to fall and press the fabric, ensuring that the fabric remains stable during the sewing process, which is convenient for accurate sewing. After the sewing is completed, the support seat drive device 311 drives the support seat 3 to move backward as a whole. During the movement, the limit block 314 can limit the backward movement of the support seat 3. Then, the first swing drive device 612 and the second swing drive device 613 work together to pull the shaft seat 611 through the output shaft, thereby driving the pressure plate 6 to lift up and loosen the fabric, which is convenient for subsequent processing operations on the fabric or for taking out the processed fabric.

[0028] like Figure 2 and Figure 3 As shown, the folding drive mechanism 51 may include a first folding cylinder 511, a second folding cylinder 512, a folding connecting plate 513, a limiting bolt 514, and a guide slide plate 515. Guide grooves 402 are respectively provided on both sides of the pressure plate 4. The guide slide plates 515 are respectively movably disposed in their respective guide grooves 402. The output shaft of the first folding cylinder 511 is fixed on the pressure plate 4 and located at the end of the guide groove 402. The second folding cylinder 512 is connected to the first folding cylinder 511, and the output shafts of the second folding cylinder 512 and the first folding cylinder 511 are connected. The second folding cylinders 512 are fixedly installed on their respective guide slides 515 with a staggered and reverse arrangement. Two folding connecting plates 513 are provided and fixedly connected to both sides of the folding plate 513 respectively. The folding connecting plates 513 are provided with waist-shaped grooves 5130 along their length. The output shafts of the second folding cylinders 512 are respectively connected to their respective folding connecting plates 513 and drive them to move back and forth. The limiting bolts 514 are fixed parallel to their respective waist-shaped grooves 5130 along the moving direction of the folding connecting plates 513 and can limit the back and forth movement of the folding connecting plates 513.

[0029] The folding connecting plate 513 serves as an intermediate component connecting the folding plate 5 and the second folding cylinder 512. It transmits the power of the second folding cylinder 512 to the folding plate 5. The waist-shaped groove 5130 opened along its length direction, together with the limiting bolt 514, can not only realize the corresponding forward and backward movement of the folding plate 5, but also limit the range of movement, ensuring the accuracy of the movement of the folding plate 5.

[0030] In practical implementation, when automatic hemming is required during edge-fitting, the first folding cylinder 511 and the second folding cylinder 512 are configured as cylinders arranged in opposite directions. The second folding cylinder 512 is connected to the folding connecting plate 513, and the output shaft of the first folding cylinder 511 is fixedly connected to the pressure plate 4. During operation, the second folding cylinder 512 first pushes the hemming connecting plate 513 a certain distance, and then the first folding cylinder 511 pulls in the opposite direction. Through this two-stage pulling method, combined with the movement of the pressure plate 6, the folding plate 5 can effectively hem the fabric. This achieves automatic hemming during the edge-fitting process, not only improving the processing efficiency of the front trouser pocket but also effectively eliminating wrinkles that easily occur during manual hemming. It also allows users to perform double-width precision sewing on the fabric.

[0031] Preferably, the pressure plate drive mechanism 41 includes a support frame 411, a pressure plate lifting device 412, a first connecting rod 413, a second connecting rod 414, a pin 415, and a socket 416. The support frames 411 are respectively arranged parallel and vertically on the front side of the machine base 1. The pressure plate lifting devices 412 are respectively fixedly arranged at both ends of the rear side of the machine base 1. The middle part of the first connecting rod 413 is hinged to the two support frames 411 respectively. One end of the first connecting rod 413 is connected to the output shaft of the pressure plate lifting device 412 for transmission. The other end is hinged to one end of the second connecting rod 414, and one end of the pin 415 is rotatably connected to the other end of the second connecting rod 414. There are two sockets 416, which are parallel to the second connecting rod 414 and fixedly connected to the front end of the pressure plate 4. The socket 416 has a through hole 4160 along its length. The other end of the pin 415 is inserted into the through hole 4160. The pressure plate lifting device 412 can drive the pressure plate 4 to rise or fall through the first connecting rod 413 and the second connecting rod 414.

[0032] Specifically, it may also include abutment plate 7, pressure plate 4 and connecting plate 2, all of which are elastic plates. The structure of pressure plate 4 is U-shaped. Abutment plate 7 is horizontally fixed at the front end of the top of the machine base 1. The bottom surfaces of the two sides of the front end of pressure plate 4 are inclined downward and abut against the extension parts at both ends of abutment plate 7.

[0033] The end of the pressure plate 4 can easily press the material to prevent the fabric from shifting. The bottom surfaces of the two sides of the front end of the pressure plate 4 are inclined downwards and abut against the extension parts at both ends of the abutment plate 7, so as to provide two support points when the pressure plate 4 releases the fabric and lifts it up.

[0034] In practice, the pressure plate lifting device 412 drives its output shaft to move up and down, and drives the first connecting rod 413 and the second connecting rod 414 to swing together, thereby driving the pressure plate 4 to rise. The fabric can be easily placed in a suitable position for easy loading. When it descends, the pressure plate 4 applies pressure to the fabric to assist in the stable processing and sewing of the fabric.

[0035] In summary, this utility model, through the coordinated action of the first and second swing driving devices, ensures that the two sides of the pressure plate can apply uniform pressure to the fabric when swinging up and down, guaranteeing the high precision and consistency of the knitting needles during the sewing process, resulting in a smoother and more aesthetically pleasing seam, reducing sewing defects. Furthermore, the precise movement of the folding plate driven by the folding mechanism effectively prevents the fabric from stretching and deforming during the folding process, preventing wrinkles, resulting in high processing efficiency and good finished product quality.

[0036] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. An improved front trouser pocket edge-sealing device, characterized in that: The system includes a base (1), a connecting plate (2), a support base (3), a pressure plate (4), a folding plate (5), a small pressing plate (6), a support base drive mechanism (31), a folding drive mechanism (51), a pressure plate drive mechanism (41), and a small pressing plate drive mechanism (61). The connecting plate (2) is fixedly connected to the front end of the base (1), and the ends of the pressure plate (4) are fixedly connected to both sides of the connecting plate (2). The front end of the pressure plate (4) has a pressure groove (401). The material plate driving mechanism (61) is fixedly mounted on the machine base (1) and can drive the small material plate (6) to swing up and down in the pressure groove (401). The support base (3) is horizontally movably mounted in front of the top face of the connecting plate (2). The support base driving mechanism (31) is fixedly mounted on the machine base (1) and can drive the support base (3) to move back and forth. The folding material driving mechanism (51) is fixedly mounted on both sides of the end of the pressure plate (4). The folding material plate (5) is arranged along the length direction of the pressure groove (401) and The material is driven by the folding drive mechanism (51) to move back and forth in the pressure groove (401) in front of the small material plate (6). The small material plate drive mechanism (61) includes a bearing seat (611), a first swing drive device (612) and a second swing drive device (613). The first swing drive device (612) and the second swing drive device (613) are respectively mounted on the machine base (1). The output shafts of the first swing drive device (612) and the second swing drive device (613) are respectively connected to the small material plate (6) through the upper end of their respective bearing seats (611). The lower ends of the two bearing seats (611) are respectively rotatably connected to the rotating shafts extending from both ends of the support seat (3). The support seat drive mechanism (31) can drive the support seat (3) to move back and forth, thereby driving the small material plate (6) to move back and forth. The first swing drive device (612) and the second swing drive device (613) can drive the small material plate (6) to swing up and down and realize lifting to loosen the fabric or lowering to press the fabric.

2. The improved front trouser pocket edge-sealing device according to claim 1, characterized in that: The pressure plate driving mechanism (41) includes a support frame (411), a pressure plate lifting device (412), a first connecting rod (413), a second connecting rod (414), a pin (415), and a socket (416). The support frames (411) are respectively arranged parallel and vertically on the front side of the machine base (1). The pressure plate lifting device (412) is respectively fixedly arranged at both ends of the rear side of the machine base (1). The middle part of the first connecting rod (413) is hinged to the two support frames (411) respectively. One end of the first connecting rod (413) is connected to the output shaft of the pressure plate lifting device (412) for transmission. The other end of the pin (415) is hinged to one end of the second connecting rod (414). One end of the pin (415) is rotatably connected to the other end of the second connecting rod (414). The socket (416) has two sockets, which are parallel to the second connecting rod (414) and fixedly connected to the front ends of the pressure plate (4). The socket (416) has through holes (4160) arranged along its length. The other end of the pin (415) is inserted into the through holes (4160). The pressure plate lifting device (412) can drive the pressure plate (4) to rise or fall through the first connecting rod (413) and the second connecting rod (414).

3. The improved front trouser pocket edge-sealing device according to claim 1, characterized in that: It also includes an abutment plate (7). The pressure plate (4) and the connecting plate (2) are both set as elastic plates. The pressure plate (4) is U-shaped. The abutment plate (7) is horizontally fixed at the front end of the top of the machine base (1). The bottom surfaces of the two sides of the front end of the pressure plate (4) are inclined downward and abut against the extension parts at both ends of the abutment plate (7).

4. The improved front trouser pocket edge-sealing device according to claim 1, characterized in that: The folding drive mechanism (51) includes a first folding cylinder (511), a second folding cylinder (512), a folding connecting plate (513), a limiting bolt (514), and a guide slide plate (515). Guide grooves (402) are respectively provided on both sides of the pressure plate (4). The guide slide plates (515) are respectively movably arranged in their respective guide grooves (402). The first folding cylinder (511) fixes its output shaft on the pressure plate (4) and is located at the end of the guide groove (402). The second folding cylinder (512) is connected to the first folding cylinder (511), and the output shafts of the second folding cylinder (512) and the first folding cylinder (511) are connected. The output shafts are misaligned and reversed. The second folding cylinders (512) are fixedly installed on their respective guide slides (515). The folding connecting plates (513) are provided in two pieces and are fixedly connected to both sides of the folding plate (5). The folding connecting plates (513) are provided with waist-shaped grooves (5130) along their length. The output shafts of the second folding cylinders (512) are connected to their respective folding connecting plates (513) and drive them to move back and forth. The limiting bolts (514) are fixed in their respective waist-shaped grooves (5130) in parallel along the moving direction of the folding connecting plates (513) and can limit the back and forth movement of the folding connecting plates (513).

5. The improved front trouser pocket edge-sealing device according to claim 1, characterized in that: The support base drive mechanism (31) includes a support base drive device (311), a slide rail (312), and a slider (313). The support base drive device (311) is fixedly installed on the top surface of the machine base (1). The slide rail (312) is fixedly installed in the middle of the pressure plate (4) and located below the rear end of the support base (3). The output shaft of the support base drive device (311) is connected to the rear end of the support base (3) via a transmission connection. The bottom of the rear end of the support base (3) is slidably connected to the slide rail (312) via the slider (313).

6. The improved front trouser pocket edge-sealing device according to claim 1, characterized in that: It also includes a limiting block (314) for limiting the backward movement of the support base (3), wherein two limiting blocks (314) are provided and are respectively fixedly installed on the front end of the top of the connecting plate (2).

7. The improved front trouser pocket edge-sealing device according to claim 1, characterized in that: Both the first swing drive device (612) and the second swing drive device (613) are configured as cylinders or hydraulic cylinders.

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