Auxiliary feeding device of sewing machine for fabric textile processing

Abstract

The invention relates to the technical field of sewing processing, and discloses a fabric textile processing sewing machinery auxiliary feeding device which comprises a sewing platform, a mounting groove is formed in the upper surface of the sewing platform, a conveying mechanism is arranged in the mounting groove, and an angle control box is arranged on the lower side of the sewing platform; two sets of sewing mechanisms are arranged on the front side and the rear side of the upper surface of the sewing platform, servo motor lead screw driving mechanisms are fixedly installed on the front side and the rear side of the angle control box, and the sewing mechanisms are driven by the servo motor lead screw driving mechanisms to do reciprocating translation along the Y axis. According to the device, the sewing mechanism capable of moving along the Y-axis on the sewing platform and the conveying plate chain capable of operating in the X-axis direction, cloth to be processed is laid on the shaping bottom film, the shaping bottom film is adsorbed on the conveying plate chain, and when the cloth is fed through the conveying plate chain, wrinkling and position deviation of the cloth can be effectively prevented; and the sewing mechanism can sew according to a path in any shape in an XY coordinate system, so that the problem that the feeding device interferes with the sewing path is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the sewing processing technical field, especially to a sewing machine auxiliary feeding device for fabric textile processing. BACKGROUND

[0002] In the process of sewing cloth, a feeding device is often needed to feed the cloth. In order to prevent the cloth from slipping and wrinkling during feeding, the patent file with the publication number CN113638140B discloses a sewing machine auxiliary feeding device for fabric textile processing, which includes a mounting seat, a feeding mechanism arranged outside the feeding pressure member, a feeding synchronous transmission mechanism arranged inside the mounting seat, feeding swing member and sliding outer frame, and an feeding drive member driving the feeding mechanism to rotate through the feeding synchronous transmission mechanism. The invention realizes the feeding action of the cloth, effectively avoids the problem of cloth wrinkling caused by cloth slipping during feeding, ensures the feeding accuracy, adjusts the feeding width as needed, meets the feeding of cloth of different widths, has better universality, solves the problem that the existing sewing machine feeding device can only feed cloth of fixed width, and the cloth is easily slipped during feeding, causing cloth wrinkling and affecting product quality.

[0003] The above-mentioned scheme adopts the mode of feeding and discharging by clamping the cloth with the up-and-down running conveyor belt, and the moving direction of the cloth can only be consistent with the running direction of the conveyor belt. Therefore, the sewing path is realized by moving the sewing machine in the XY coordinate system. When processing some narrow cloth, the space left on the cloth surface for sewing is smaller after the conveyor belt occupies a certain area of the cloth surface, which greatly limits the sewing path, such as making it difficult to realize sewing according to the curved path. Therefore, the existing sewing machine auxiliary feeding device has the problem of more interference with the sewing path, and needs to be improved. SUMMARY

[0004] The purpose of the present application is to solve the problems existing in the prior art, and a sewing machine auxiliary feeding device for fabric textile processing is provided.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a sewing machine auxiliary feeding device for fabric textile processing, comprising a sewing platform, an installation groove is formed on the upper surface of the sewing platform, a conveying mechanism is arranged in the installation groove, an angle control box is arranged on the lower side of the sewing platform, two sets of sewing mechanisms are arranged on the front and rear sides of the upper surface of the sewing platform, servo motor screw drive mechanisms are fixedly installed on the front and rear sides of the angle control box, and the sewing mechanisms are driven to reciprocate along the Y axis by the servo motor screw drive mechanisms.

[0006] The conveying mechanism includes two driving rollers, a first servo motor and a conveyor plate chain. The two driving rollers are rotatably mounted on the lower side of the sewing platform. The conveyor plate chain is sleeved on the surface of the two driving rollers, and the upper and lower parallel sections of the conveyor plate chain are respectively arranged on the upper and lower sides of the angle control box. The surface of the conveyor plate chain is rotatably mounted with a first rotating seat, a second rotating seat and a third rotating seat. The bottom ends of the first rotating seat, the second rotating seat and the third rotating seat are all provided with a hexagonal groove. The first servo motor drives the driving roller to rotate, so that the conveyor plate chain reciprocates along the X-axis direction. Three sets of servo rotation drive mechanisms are fixedly installed inside the angle control box, and the three sets of servo rotation drive mechanisms correspond to the first rotating seat, the second rotating seat and the third rotating seat respectively. Each servo rotation drive mechanism includes a second servo motor, and the rotating end of the second servo motor is fixedly installed with a hexagonal shaft. The surface sliding sleeve of the hexagonal shaft is provided with an inner and outer hexagonal structure shaft sleeve. Three groups of electromagnetic coils are embedded in the angle control box. The electromagnetic coils are arranged around the shaft sleeve. The electromagnetic coils generate a magnetic field to push the shaft sleeve to slide up and down, so that the top end of the shaft sleeve can be inserted into the hexagonal groove.

[0007] A shaping base film is laid on the upper surface of the conveyor plate chain, the fabric to be processed is laid on the upper side of the shaping base film, and a positioning plate is placed on the upper side of the fabric to be processed. Any electromagnetic coil generates a magnetic field that can adsorb the positioning plate, so that the positioning plate presses the upper surface of the fabric to be processed, so that the positioning plate and the first rotating seat (or the second rotating seat or the third rotating seat) clamp the fabric to be processed and the shaping base film, so that the shaping base film follows the first rotating seat (or the second rotating seat or the third rotating seat), expanding the sewing path of the sewing mechanism to cover the area of ​​the shaping base film, thereby solving the problem of interference between the feeding device and the sewing path.

[0008] Preferably, a mounting top plate is fixedly installed on the upper side of the sewing platform, and three magnetic cylinders are fixedly installed inside the mounting top plate. The three magnetic cylinders are respectively arranged directly above the three groups of electromagnetic coils. A magnetic column is fixedly installed inside the magnetic cylinder, and an excitation coil is fixedly installed on the surface of the magnetic column. A capture sleeve that can move up and down is slidably installed on the bottom end of the magnetic column. The magnetic field generated by the excitation coil causes the positioning disk to be adsorbed on the bottom end of the capture sleeve, thereby realizing automatic placement of the positioning disk or recovery of the positioning disk.

[0009] The capture sleeve can rotate at the bottom end of the magnetic column, and a receiving hole is opened on the lower side of the mounting top plate. The capture sleeve and the positioning plate are both arranged in the receiving hole, and an angle sensor for measuring the capture sleeve is embedded in the inner wall of the receiving hole.

[0010] Preferably, the upper surfaces of the first rotating seat, the second rotating seat and the third rotating seat are provided with air holes penetrating upward and downward, the upper surface of the angle control box is provided with a flow guide groove and a plurality of blowing holes, the angle control box is internally provided with an air suction pipe and a gas supply pipe, the air suction pipe is communicated with the flow guide groove, the gas supply pipe is communicated with the blowing holes, the air suction pipe sucks air, the flow guide groove forms a negative pressure, the shaping bottom film is adsorbed, air is injected into the blowing holes, an air cushion layer is formed on the lower side of the shaping bottom film, so that the shaping bottom film rotates.

[0011] Preferably, the inside of the shaping bottom film is embedded with three first vortex coils and three capacitor sheets, the two ends of the first vortex coil are electrically connected with the capacitor sheet, the upper surface of the angle control box is embedded with a second vortex coil, the first vortex coil and the second vortex coil interact to generate an electromagnetic field, and the multiple positioning discs and the shaping bottom film are adsorbed.

[0012] The surface of the shaping bottom film is provided with a plurality of upward and downward penetrating accommodation holes and linear accommodation grooves, and the positions and shapes of the accommodation holes and the linear accommodation grooves are determined according to the style and sewing path of the specific to-be-processed cloth 16.

[0013] The upper surface of the sewing platform is fixedly provided with two L-shaped limiting protrusions, and the shaping bottom film can be placed in the region between the two L-shaped limiting protrusions to position the placement of the shaping bottom film.

[0014] Preferably, the bottom end of the shaft connecting sleeve is fixedly provided with a magnetic ring, the magnetic field direction generated by the electromagnetic coil is changed, and the magnetic ring is pushed to slide upward and downward by magnetic force.

[0015] Preferably, the servo motor screw driving mechanism comprises a mounting seat, the upper surface of the mounting seat is provided with a T-shaped sliding groove, a transmission screw rod is rotatably installed in the T-shaped sliding groove, a third servo motor is fixedly installed at the end of the mounting seat, the third servo motor drives the transmission screw rod to rotate, a transmission base is slidably installed in the T-shaped sliding groove, and the transmission screw rod is threadedly connected with the transmission base, and the sewing mechanism is fixedly installed on the upper side of the transmission base, so that the sewing mechanism reciprocally translates along the Y axis.

[0016] The present application has the following beneficial effects: 1. The sewing machine auxiliary feeding device provided by the present application, the sewing mechanism movable along the Y axis on the sewing platform, and the conveying plate chain movable along the X axis direction, the to-be-processed cloth is laid on the shaping bottom film, the shaping bottom film is adsorbed on the conveying plate chain, when feeding through the conveying plate chain, the cloth can be effectively prevented from wrinkling and position deviation, and the sewing mechanism can sew along an arbitrary shape path in the XY coordinate system, so that the problem of interference between the feeding device and the sewing path is solved.

[0017] 2. By arranging a first rotating seat, a second rotating seat and a third rotating seat on the conveyor plate chain, the servo rotation drive mechanism can control any one of the first rotating seat, the second rotating seat and the third rotating seat to rotate according to a predetermined angle, that is, drive the shaped base film to rotate with the axis of the first rotating seat, the second rotating seat or the third rotating seat as the axis, thereby expanding the area of ​​the shaped base film covered by the sewing path of the sewing mechanism, further reducing the interference area, so that the sewing machine auxiliary feeding device will not cause the sewing path to be unable to cover the fabric to be processed directly above the conveyor plate chain due to the large width of the conveyor plate chain. This design is not only suitable for sewing processing of wider fabrics, but also for sewing processing of narrower fabrics, meeting different production needs.

[0018] 3. By placing the fabric to be processed on the upper side of the shaping base film and placing a positioning plate on the surface of the fabric to be processed, the magnetic field generated by the electromagnetic coil attracts the positioning plate, so that the positioning plate and the first rotating seat (or the second rotating seat or the third rotating seat) clamp the fabric to be processed, thereby preventing the fabric to be processed from sliding and deflecting when the shaping base film rotates. Since the first vortex coil is arranged in the shaping base film and the second vortex coil introduces high-frequency alternating current, the mutual inductance of the first vortex coil and the second vortex coil generates an electromagnetic field, which attracts the positioning plate through the electromagnetic field. At this time, multiple positioning plates can be attracted to the shaping base film to clamp the fabric to be processed, further increasing the stability of the fabric to be processed placed on the shaping base film, and ensuring the accuracy of the sewing path of the fabric to be processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed by the present invention; Figure 2 This is a schematic diagram of the side cross-section structure of the sewing platform proposed in the present invention; Figure 3 for Figure 2 The enlarged structural diagram at H in the middle; Figure 4 This is a schematic diagram of the front cross-section structure of the sewing platform proposed by the present invention; Figure 5 It is a schematic diagram of the partially cutaway three-dimensional structure of the shaft sleeve; Figure 6 Schematic diagram of the top view of the sewing platform (the shaped base film rotates with the second rotating seat); Figure 7 Schematic diagram of the top view of the sewing platform (the shaped base film rotates with the first rotating seat); Figure 8 Schematic diagram of the top view of the sewing platform (the shaped base film rotates with the third rotating seat); Figure 9 Schematic diagram of the internal structure of the molded base film.

[0020] In the figure: 1 sewing platform, 2 angle control box, 3 sewing mechanism, 4 driving roller, 5 first servo motor, 6 conveying plate chain, 7 first rotating seat, 8 second rotating seat, 9 third rotating seat, 10 second servo motor, 11 hexagonal shaft, 12 shaft connecting sleeve, 13 electromagnetic coil, 14 bottom film, 15 positioning disc, 16 cloth to be processed, 17 mounting top plate, 18 magnetic suction cylinder, 19 magnetic guide column, 20 excitation coil, 21 capture sleeve, 22 angle sensor, 23 air hole, 24 flow guide groove, 25 blowing hole, 26 air suction pipe, 27 air supply pipe, 28 first vortex coil, 29 capacitor sheet, 30 second vortex coil, 31 magnetic ring, 32 L-shaped limiting protrusion, 33 mounting seat, 34 transmission screw, 35 third servo motor, 36 transmission base. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0022] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element 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.

[0023] Reference Figures 1-9 , the sewing machine auxiliary feeding device for fabric textile processing, including sewing platform 1, the upper surface of sewing platform 1 is provided with mounting groove, the conveying mechanism is arranged in the mounting groove, the lower side of sewing platform 1 is provided with angle control box 2, the upper surface of sewing platform 1 is provided with two sets of sewing mechanism 3 on the front and rear sides, the front and rear sides of angle control box 2 are both fixedly installed with servo motor screw drive mechanism, the servo motor screw drive mechanism drives sewing mechanism 3 to reciprocate along Y axis.

[0024] Specifically, as shown in Figure 2 , the servo motor screw drive mechanism includes mounting seat 33, the upper surface of mounting seat 33 is provided with T-shaped sliding groove, and transmission screw 34 is rotatably installed in the T-shaped sliding groove, third servo motor 35 is fixedly installed at the end of mounting seat 33, third servo motor 35 drives transmission screw 34 to rotate, transmission base 36 is slidably installed in the T-shaped sliding groove, transmission screw 34 is threadedly connected with transmission base 36, sewing mechanism 3 is fixedly installed on the upper side of transmission base 36, when third servo motor 35 drives transmission screw 34 to rotate forward or reversely, transmission base 36 reciprocates along the T-shaped sliding groove, so that sewing mechanism 3 reciprocates along Y axis.

[0025] The conveying mechanism comprises two driving rollers 4, a first servo motor 5 and a conveying plate chain 6, the two driving rollers 4 are rotatably installed on the lower side of the sewing platform 1, the conveying plate chain 6 is sleeved on the surface of the two driving rollers 4, and the upper and lower parallel sections of the conveying plate chain 6 are arranged on the upper and lower sides of the angle control box 2 respectively, the surface of the conveying plate chain 6 is rotatably provided with a first rotating seat 7, a second rotating seat 8 and a third rotating seat 9 respectively, the bottom end of the first rotating seat 7, the second rotating seat 8 and the third rotating seat 9 is provided with a hexagonal groove, the first servo motor 5 is fixedly installed on the lower side of the sewing platform 1, and the first servo motor 5 drives the driving roller 4 to rotate, so that the conveying plate chain 6 reciprocates along the X-axis direction.

[0026] Three sets of servo rotary driving mechanisms are fixedly installed in the angle control box 2, the three sets of servo rotary driving mechanisms correspond to the first rotating seat 7, the second rotating seat 8 and the third rotating seat 9 one by one in the up-down direction, each servo rotary driving mechanism comprises a second servo motor 10, the rotating end of the second servo motor 10 is fixedly installed with a hexagonal shaft 11, the surface of the hexagonal shaft 11 is slidably sleeved with an inner-outer hexagonal structure shaft connecting sleeve 12, three groups of electromagnetic coils 13 are embeddedly installed in the angle control box 2, the electromagnetic coils 13 are arranged around the shaft connecting sleeve 12, the electromagnetic coils 13 generate a magnetic field to push the shaft connecting sleeve 12 to slide up and down, so that the top end of the shaft connecting sleeve 12 can be inserted into the hexagonal groove, and Figure 3 or Figure 5 wherein the shaft connecting sleeve 12 is made of a non-magnetic material to avoid being magnetized, the bottom end of the shaft connecting sleeve 12 is fixedly installed with a magnetic ring 31, the magnetic field generated by the electromagnetic coil 13 changes direction, and the magnetic ring 31 is pushed to slide up and down by magnetic force.

[0027] The upper surface of the conveying plate chain 6 is paved with a shaped bottom film 14, the shaped bottom film 14 is made of hard plastic and has certain supporting force and is not easy to wrinkle, the upper surface of the sewing platform 1 is fixedly installed with two L-shaped limiting protrusions 32, and the shaped bottom film 14 can be placed in the region between the two L-shaped limiting protrusions 32.

[0028] The surface of the shaped bottom film 14 is provided with a plurality of up-down penetrating accommodation holes and linear accommodation grooves, and it should be noted that the positions and shapes of the accommodation holes and the linear accommodation grooves are determined according to the style of the specific to-be-processed cloth 16 and the sewing path, Figure 9 The shaped bottom film 14 is only illustrative.

[0029] The to-be-processed cloth 16 is paved on the upper side of the shaped bottom film 14, and a positioning disc 15 is placed on the upper side of the to-be-processed cloth 16, and the magnetic field generated by any electromagnetic coil 13 can attract the positioning disc 15, so that the positioning disc 15 presses the upper surface of the to-be-processed cloth 16.

[0030] Among them, the upper surfaces of the first rotating seat 7, the second rotating seat 8 and the third rotating seat 9 are all provided with air holes 23 running through from top to bottom, the upper surface of the angle control box 2 is provided with a guide groove 24 and a plurality of purge holes 25, and the interior of the angle control box 2 is provided with an air intake pipe 26 and an air supply pipe 27, the air intake pipe 26 is connected to the guide groove 24, and the air supply pipe 27 is connected to the purge hole 25.

[0031] Three first vortex coils 28 and three capacitor sheets 29 are embedded in the interior of the shaping base film 14. The two ends of the first vortex coil 28 are electrically connected to the capacitor sheets 29. The upper surface of the angle control box 2 is embedded with a second vortex coil 30. The second vortex coil 30 introduces high-frequency alternating current. The first vortex coil 28 and the second vortex coil 30 generate an electromagnetic field through mutual induction. The positioning plate 15 is adsorbed by the electromagnetic field, and the positioning plate 15 presses the fabric to be processed 16 downward.

[0032] A mounting top plate 17 is fixedly installed on the upper side of the sewing platform 1, and three magnetic cylinders 18 are fixedly installed inside the mounting top plate 17. The three magnetic cylinders 18 are respectively arranged directly above the three groups of electromagnetic coils 13. A magnetic column 19 is fixedly installed inside the magnetic cylinder 18, and an excitation coil 20 is fixedly installed on the surface of the magnetic column 19. A capture sleeve 21 that can move up and down is slidably installed on the bottom end of the magnetic column 19. The magnetic field generated by the excitation coil 20 causes the positioning disk 15 to be adsorbed on the bottom end of the capture sleeve 21. When the excitation coil 20 is powered off, the magnetic field disappears, and the positioning disk 15 falls on the fabric to be processed 16. There is no need to manually place or remove the positioning disk 15.

[0033] The capture sleeve 21 can rotate at the bottom end of the magnetic column 19. A receiving hole is provided on the lower side of the mounting top plate 17. The capture sleeve 21 and the positioning plate 15 are both arranged in the receiving hole. An angle sensor 22 for measuring the capture sleeve 21 is embedded in the inner wall of the receiving hole.

[0034] Working principle: a. Figure 4 As shown, after the shaping base film 14 is placed between the two L-shaped limiting protrusions 32, the fabric 16 to be processed is laid on the upper side thereof. At this time, the suction pipe 26 draws air, and the guide groove 24 forms a negative pressure, so that the shaping base film 14 is adsorbed on the upper surface of the first rotating seat 7, the second rotating seat 8, the third rotating seat 9 and the conveyor plate chain 6. The conveyor plate chain 6 operates. When the shaping base film 14 moves to Figure 1 As shown in the figure, the position of the shaped base film 14 can be used to carry the fabric 16 to be processed along the X-axis direction through the conveyor chain 6, and the sewing mechanism 3 moves along the Y-axis to perform sewing operations on the fabric 16 to be processed.

[0035] b. The sewing operation is as follows. Since the shaped base film 14 is respectively adsorbed on the first rotating seat 7, the second rotating seat 8, and the third rotating seat 9, the sewing processing steps with three different rotation centers are realized. The principles are the same. The following is a detailed introduction taking the first rotating seat 7 as an example.

[0036] When the shaping bottom film 14 moves to Figure 1 When the shaping base film 14 is in the position shown in the figure, after the excitation coil 20 is powered off, the magnetic field disappears, the positioning plate 15 falls on the fabric 16 to be processed, and the electromagnetic coil 13 is energized. The magnetic field generated pushes the shaft sleeve 12 to slide upward, so that the top of the shaft sleeve 12 is inserted into the hexagonal groove on the lower side of the first rotating seat 7. At the same time, the magnetic field of the electromagnetic coil 13 attracts the positioning plate 15 and the capture sleeve 21. At this time, the positioning plate 15 and the first rotating seat 7 are in a state of clamping the shaping base film 14 and the fabric 16 to be processed. Figure 3 , the second servo motor 10 rotates, driving the shaping base film 14 to rotate a certain angle, such as Figure 7 As shown, the A end of the molded base film 14 can be offset downward and closer to the sewing mechanism 3 on the lower side.

[0037] At the same time, the air supply pipe 27 inputs air to the purge hole 25, and the air flows from the gap of the conveyor plate chain 6 and the air hole 23 to the lower side of the shaping base film 14, reducing the friction between the shaping base film 14 and the conveyor plate chain 6 so that the shaping base film 14 can rotate.

[0038] As above, when the second rotating seat 8 is used to drive the shaping base film 14 to rotate a certain angle, as shown in FIG. Figure 5 As shown, when the third rotating seat 9 is used to drive the shaping base film 14 to rotate a certain angle, as shown in FIG. Figure 6 As shown, I will not go into too much detail here, but it should be noted that Figure 5 、 Figure 6 、 Figure 7 The positions of the A end and the B end of the middle shaping base film 14 are different, so the fabric 16 to be processed on the upper sides of the AB ends of the shaping base film 14 can be sewn separately, thereby expanding the coverage of the sewing path.

[0039] c. After the sewing process is completed, the bottom film 14 is restored Figure 1 As shown in the figure, the electromagnetic coil 13 is de-energized, the shaft sleeve 12 falls, and is separated from the first rotating seat 7 (or the second rotating seat 8 or the third rotating seat 9). At this time, the excitation coil 20 is energized, and the positioning plate 15 is adsorbed on the bottom end of the capture sleeve 21. The positioning plate 15 and the capture sleeve 21 move upward together, and the positioning plate 15 is separated from the fabric to be processed 16. Then, the conveyor plate chain 6 operates to convey and remove the fabric to be processed 16.

[0040] It should be noted here that the rotation of the shaping base film 14 can be judged by the rotation angle of the second servo motor 10. If the rotation angle of the capture sleeve 21 detected by the angle sensor 22 is significantly different from the rotation angle of the second servo motor 10, it can be judged that the position of the fabric 16 to be processed relative to the shaping base film 14 is offset, which may cause the sewing path to be offset and cause a quality accident. The error value can be used as a reference parameter for equipment alarm.

[0041] By placing the fabric 16 to be processed on the upper side of the shaping base film 14 and placing a positioning plate 15 on the surface of the fabric 16 to be processed, the magnetic field generated by the electromagnetic coil 13 attracts the positioning plate 15, so that the positioning plate 15 and the first rotating seat 7 (or the second rotating seat 8 or the third rotating seat 9) clamp the fabric 16 to be processed, thereby preventing the fabric 16 to be processed from sliding and deflecting when the shaping base film 14 rotates. Since the first vortex coil 28 is arranged in the shaping base film 14 and the second vortex coil 30 introduces high-frequency alternating current, the first vortex coil 28 and the second vortex coil 30 generate an electromagnetic field through mutual induction, and the positioning plate 15 is attracted by the electromagnetic field. At this time, multiple positioning plates 15 can be attracted to the shaping base film 14 to clamp the fabric 16 to be processed, further increasing the stability of the fabric 16 to be processed placed on the shaping base film 14, and ensuring the accuracy of the sewing path of the fabric 16 to be processed.

[0042] In this embodiment, by arranging the first rotating seat 7, the second rotating seat 8 and the third rotating seat 9 on the conveyor plate chain 6, the servo rotation drive mechanism can control any one of the first rotating seat 7, the second rotating seat 8 and the third rotating seat 9 to rotate according to a predetermined angle, that is, drive the shaping base film 14 to rotate with the axis of the first rotating seat 7, the second rotating seat 8 or the third rotating seat 9 as the axis, expand the sewing path of the sewing mechanism 3 to cover the area of ​​the shaping base film 14, further reduce the interference area, so that the sewing machine auxiliary feeding device will not cause the sewing path to be unable to cover the fabric to be processed 16 directly above the conveyor plate chain 6 due to the large width of the conveyor plate chain 6. This design is not only suitable for sewing processing of wider fabrics, but also for sewing processing of narrower fabrics, to meet different production needs.

[0043] The auxiliary feeding device for a sewing machine proposed in the present invention comprises a sewing mechanism 3 movable along the Y-axis on a sewing platform 1, and a conveyor plate chain 6 operable along the X-axis. The fabric 16 to be processed is laid on a shaping base film 14, and the shaping base film 14 is adsorbed on the conveyor plate chain 6. When the fabric is fed through the conveyor plate chain 6, wrinkles and position deviation of the fabric can be effectively prevented, and the sewing mechanism 3 can sew along a path of any shape within the XY coordinate system, thereby solving the problem of interference between the feeding device and the sewing path.

[0044] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A feeding device for a sewing machine for textile processing of fabrics, comprising a sewing platform (1), characterized in that: The upper surface of the sewing platform (1) is provided with a mounting groove, in which a conveying mechanism is provided, an angle control box (2) is provided on the lower side of the sewing platform (1), two sets of sewing mechanisms (3) are provided on the front and rear sides of the upper surface of the sewing platform (1), and servo motor screw drive mechanisms are fixedly installed on the front and rear sides of the angle control box (2), and the sewing mechanism (3) is driven to move back and forth along the Y axis by the servo motor screw drive mechanism; The conveying mechanism comprises two driving rollers (4), a first servo motor (5) and a conveying plate chain (6), wherein the two driving rollers (4) are rotatably mounted on the lower side of the sewing platform (1), the conveying plate chain (6) is sleeved on the surface of the two driving rollers (4), and the upper and lower parallel sections of the conveying plate chain (6) are respectively arranged on the upper and lower sides of the angle control box (2), and the surface of the conveying plate chain (6) is rotatably mounted with a first rotating seat (7), a second rotating seat (8) and a third rotating seat (9), and the bottom ends of the first rotating seat (7), the second rotating seat (8) and the third rotating seat (9) are all provided with a hexagonal groove, and the first servo motor (5) drives the driving rollers (4) to rotate, so that the conveying plate chain (6) reciprocates along the X-axis direction; Three sets of servo rotation drive mechanisms are fixedly installed inside the angle control box (2), and the three sets of servo rotation drive mechanisms correspond to the first rotating seat (7), the second rotating seat (8) and the third rotating seat (9) one by one. Each servo rotation drive mechanism includes a second servo motor (10), and a hexagonal shaft (11) is fixedly installed on the rotating end of the second servo motor (10). The surface sliding sleeve of the hexagonal shaft (11) is provided with an inner and outer hexagonal shaft sleeve (12). Three sets of electromagnetic coils (13) are embedded in the angle control box (2), and the electromagnetic coils (13) are arranged around the shaft sleeve (12). The electromagnetic coils (13) generate a magnetic field to push the shaft sleeve (12) to slide up and down, so that the top end of the shaft sleeve (12) can be inserted into the hexagonal groove. A shaping base film (14) is laid on the upper surface of the conveyor plate chain (6), and the fabric to be processed (16) is laid on the upper side of the shaping base film (14). A positioning plate (15) is placed on the upper side of the fabric to be processed (16). Any electromagnetic coil (13) generates a magnetic field that can adsorb the positioning plate (15), so that the positioning plate (15) presses the upper surface of the fabric to be processed (16).

2. The auxiliary feeding device for sewing machines for textile processing of fabrics according to claim 1, characterized in that: A mounting top plate (17) is fixedly mounted on the upper side of the sewing platform (1), and three magnetic cylinders (18) are fixedly mounted inside the mounting top plate (17). The three magnetic cylinders (18) are respectively arranged directly above the three groups of electromagnetic coils (13). A magnetic column (19) is fixedly mounted inside the magnetic cylinder (18), and an excitation coil (20) is fixedly mounted on the surface of the magnetic column (19). A capture sleeve (21) that can move up and down is slidably mounted on the bottom end of the magnetic column (19). The magnetic field generated by the excitation coil (20) causes the positioning plate (15) to be adsorbed on the bottom end of the capture sleeve (21).

3. The auxiliary feeding device for sewing machines for textile processing of fabrics according to claim 2, characterized in that: The capture sleeve (21) can rotate at the bottom end of the magnetic column (19), and a receiving hole is provided on the lower side of the mounting top plate (17). The capture sleeve (21) and the positioning plate (15) are both arranged in the receiving hole, and an angle sensor (22) for measuring the capture sleeve (21) is embedded in the inner wall of the receiving hole.

4. The auxiliary feeding device for sewing machines for textile processing of fabrics according to claim 3, characterized in that: The upper surfaces of the first rotating seat (7), the second rotating seat (8) and the third rotating seat (9) are all provided with air holes (23) running through them from top to bottom. The upper surface of the angle control box (2) is provided with a guide groove (24) and a plurality of purge holes (25). An air suction pipe (26) and an air supply pipe (27) are provided inside the angle control box (2). The air suction pipe (26) is communicated with the guide groove (24), and the air supply pipe (27) is communicated with the purge hole (25).

5. The auxiliary feeding device for sewing machines for textile processing of fabrics according to claim 4, characterized in that: Three first vortex coils (28) and three capacitor plates (29) are embedded in the interior of the shaped base film (14), two ends of the first vortex coils (28) are electrically connected to the capacitor plates (29), and a second vortex coil (30) is embedded in the upper surface of the angle control box (2).

6. The auxiliary feeding device for sewing machines for textile processing of fabrics according to claim 5, characterized in that: A magnetic ring (31) is fixedly mounted on the bottom end of the shaft sleeve (12). The electromagnetic coil (13) generates a change in the direction of the magnetic field, and pushes the magnetic ring (31) to slide up and down through the magnetic force.

7. The auxiliary feeding device for sewing machines for textile processing of fabrics according to claim 6, characterized in that: The surface of the shaping base film (14) is provided with a plurality of vertically penetrating holes and linearly penetrating grooves.

8. The auxiliary feeding device for sewing machines for textile processing of fabrics according to claim 7, characterized in that: Two L-shaped limiting protrusions (32) are fixedly mounted on the upper surface of the sewing platform (1), and the shaped base film (14) can be placed in the area between the two L-shaped limiting protrusions (32).

9. The auxiliary feeding device for sewing machines for textile processing of fabrics according to any one of claims 1 to 8, characterized in that: The servo motor screw drive mechanism includes a mounting seat (33), an upper surface of the mounting seat (33) is provided with a T-shaped slot, and a transmission screw (34) is rotatably mounted in the T-shaped slot, a third servo motor (35) is fixedly mounted at the end of the mounting seat (33), the third servo motor (35) drives the transmission screw (34) to rotate, a transmission base (36) is slidably mounted in the T-shaped slot, the transmission screw (34) is threadedly connected to the transmission base (36), and the sewing mechanism (3) is fixedly mounted on the upper side of the transmission base (36).

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