A laser bag opener

Abstract

The application discloses a laser bag opening machine, which comprises a rack, a material folding device, a laser cutting device, a sewing device, a frame pressing device and a bottom supporting plate arranged on the rack. A workbench is arranged on the rack, and the material folding station, the laser cutting station and the sewing station are arranged side by side on the workbench. A waiting area is arranged below the workbench between the material folding station and the laser cutting station. The frame pressing device positions the folded edge through an electromagnet, and the bottom supporting plate forms an up-down circulation below the workbench. In this way, the frame pressing device can reliably position the folded edge, the bottom supporting plate can reliably support the bottom, the fabric and the folded fabric can be accurately positioned at each link, the fabric is not easy to deform, the sewing precision of the bag opening machine is improved, and the bottom supporting plate forms an up-down circulation below the workbench, thereby effectively saving space, reducing the area of the workbench and the overall area of the laser bag opening machine, and facilitating the storage and management of workshop equipment.

Description

Technical Field

[0001] This invention relates to the field of laser bag opening machines, and in particular to a laser bag opening machine. Background Technology

[0002] Existing laser bag opening machines typically integrate multiple stations, such as laser cutting, folding, and sewing, into a single device to automate the opening of bags for garments, trousers, and other items. The laser bag opening machine includes a frame and, mounted on the frame, a folding device, a laser cutting device, a sewing device, a frame pressing device, and a base plate. A worktable is mounted on the frame, on which folding stations, laser cutting stations, and sewing stations are arranged side-by-side at intervals. The folding device, laser cutting device, and sewing device are respectively positioned corresponding to the folding station, laser cutting station, and sewing station. The frame pressing device and the base plate are movable to selectively position themselves at the folding station, laser cutting station, and sewing station.

[0003] However, in existing technologies, the base plate circulates on a flat surface of the worktable. The worktable surface needs to accommodate this circulation, resulting in a large worktable area. This makes it difficult to further reduce the overall size of the laser bag-opening machine. For example: CN 216891497 In the U-shaped structure, a circulation device drives the lower support plate to move back and forth, left and right, and then reset. Specifically, the circulation device includes a guide rail bracket fixedly connected to the back of the mounting beam. A first linear slide is fixedly connected to the lower surface of the guide rail bracket, and the upper surface of the first linear slide is fixedly connected to the lower surface of the small beam. An upright leg is fixedly connected to the moving end of the first linear slide, and a second linear slide is fixedly connected to the front of the upright leg. A guide rail plate is fixedly connected to the moving end of the second linear slide. A cylinder base plate is slidably connected to the front of the guide rail plate, and a connecting piece is fixedly connected to the upper surface of the cylinder base plate. An adjusting cylinder is fixedly connected to the front of the guide rail plate, and the output end of the adjusting cylinder is fixedly connected to the lower surface of the connecting piece. Two adjusting plates are fixedly connected to the front of the cylinder base plate, and a clamping cylinder is fixedly connected to the front of the adjusting plate. A clamp is fixedly connected to the output end of the clamping cylinder, and clamping surfaces are provided on the opposite sides of the two clamps. The first linear slide moves the upright frame back and forth, which in turn moves the second linear slide back and forth, which in turn moves the structure on the second linear slide back and forth simultaneously. The second linear slide moves the guide rail plate left and right, which in turn moves the structure on the guide rail plate left and right simultaneously.

[0004] Furthermore, its automatic folding structure is quite complex. The folding head device inserts the material edges into the feeding port. Specifically, the folding head device includes vertical inserting blades. A folding cylinder drives the inserting blades downwards, inserting the material edges into the feeding port. Then, the cylinder linkage assembly drives the feeding blades to fold the material edges as they move. Clearly, its folding structure is complex, and the power relies on the cylinder, which is limited by cylinder precision (especially when the air source stability is difficult to guarantee, the cylinder control precision is even less than ideal). Moreover, it requires further movement or rotation via corresponding rods, making the controllability of its folding precision less than ideal.

[0005] Furthermore, in existing technologies, after bending the material, a cylinder drives a pressure plate to push against the spring steel sheet, causing the spring steel sheet to spring open and be positioned. When the cylinder's extension rod retracts, the spring steel sheet retracts accordingly. This type of spring steel sheet structure is prone to fatigue strength degradation after repeated use, affecting the reliability of positioning.

[0006] Therefore, a new technical solution needs to be researched to address the above problems. Summary of the Invention

[0007] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide a laser bag opening machine. The pressing frame device uses an electromagnet to hold the lower pressing plate in place, which has high reliability. The bottom support plate forms a reliable support at the bottom, ensuring that the fabric and the fabric after folding are accurately positioned, the fabric is not easily deformed, and it is beneficial to the accuracy of bag opening and sewing. Moreover, the bottom support plate circulates up and down under the worktable, which effectively saves space and can reduce the area of ​​the worktable.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A laser bag opening machine includes a frame and a folding device, a laser cutting device, a sewing device, a frame pressing device, and a base plate mounted on the frame. A worktable is mounted on the frame, on which folding stations, laser cutting stations, and sewing stations are arranged side-by-side at intervals. The folding device, laser cutting device, and sewing device are respectively positioned corresponding to the folding station, laser cutting station, and sewing station. The frame pressing device and the base plate are movable to selectively occupy the folding station, laser cutting station, and sewing station.

[0010] The pressing frame device includes an outer pressing frame, an upper pressing plate, a lower pressing plate, and an electromagnet. The upper pressing plate and the electromagnet are respectively disposed on the outer pressing frame, and the electromagnet is located above the lower pressing plate. When the electromagnet is energized, it generates magnetic force, and the lower pressing plate is displaced upward under the attraction of the electromagnet. When the electromagnet is de-energized, the electromagnetic force disappears, and the lower pressing plate falls downward a predetermined distance under its own gravity.

[0011] Below the workbench is a waiting area located between the folding station and the laser cutting station. The base plate waits in the waiting area and then moves to below the folding station, and then moves with the frame pressing device to below the sewing station. After the first sewing operation, it moves again with the frame pressing device to below the laser cutting station. The frame pressing device removes the base plate at the laser cutting station, and the base plate is moved to the waiting area. At the same time, the second layer of fabric is placed at the sewing station, and the frame pressing device moves to the sewing station and falls onto the second layer of fabric for the second sewing operation.

[0012] As a preferred embodiment, a first clearance window is provided on the worktable corresponding to the laser cutting station. A lifting plate is provided within the first clearance window, and the lifting plate is connected to a first lifting drive unit to move the lifting plate up and down below the first clearance window. A second lifting drive unit is provided below the folding station. A waiting area is provided below the worktable between the folding station and the laser cutting station. A first translation drive unit is also provided on the frame.

[0013] The bottom support plate is located above the lifting plate at the first clearance window and is lowered along with the lifting plate by the action of the first lifting drive unit. The first translation drive unit moves the bottom support plate to the waiting area. After a set time, the first translation drive unit moves the bottom support plate to the bottom of the folding station and is raised by the action of the second lifting drive unit to be located below the pressing frame device at the folding station.

[0014] As a preferred embodiment, the folding device includes a mounting base, a first pair of folding units, a second pair of folding units, and a lifting drive mechanism. The first pair of folding units are disposed on the mounting base and include two pairs of first folding blades and a first motor drive mechanism that selectively drives the first folding blades to open and close. The second pair of folding units include two pairs of second folding blades and a second motor drive mechanism that selectively drives the second folding blades to open and close. The lifting drive mechanism is disposed on the mounting base and can selectively drive the second pair of folding units to move up and down relative to the mounting base.

[0015] As a preferred embodiment, both the first folding blade and the second folding blade have a vertical portion and a horizontal portion connected to the lower end of the vertical portion. Furthermore, the horizontal portions of the first folding blades arranged on two opposite sides extend in opposite directions, and the horizontal portions of the second folding blades arranged on two opposite sides also extend in opposite directions.

[0016] As a preferred embodiment, the outer pressure frame is provided with a first through hole extending vertically; a folding and alignment mechanism is installed on the outer pressure frame, the folding and alignment mechanism including an alignment frame and a driving unit for driving the alignment frame to open and close; the upper pressure plate is located above the outer pressure frame and covers the upper part of the alignment frame; the upper pressure plate is provided with a second through hole extending vertically, the second through hole corresponding to the first through hole; the lower pressure plate is provided corresponding to the first through hole and located below the alignment frame, the lower pressure plate is provided with a third through hole extending vertically.

[0017] As a preferred embodiment, two alignment frames are provided, and the two alignment frames are diagonally arranged L-shaped alignment frames, forming a rectangular frame. Two driving units are correspondingly provided, each driving unit diagonally pulling the L-shaped alignment frame. The outer corner of each L-shaped alignment frame has a diagonal connecting portion, which extends outward along the diagonal direction of the L-shaped alignment frame. The driving unit is a cylinder, with a telescopic rod extending forward and backward. The outer end of the telescopic rod is connected to a first connecting rod and a second connecting rod. One end of the first connecting rod is hinged to the outer end of the telescopic rod, and the other end of the first connecting rod is hinged to one end of the second connecting rod. The other end of the second connecting rod is hinged to the outer end of the diagonal connecting portion.

[0018] As a preferred embodiment, the first translation drive unit includes two clamping cylinders and a first cycle drive that drives the clamping cylinders to translate left and right. The two clamping cylinders have clamping positioning parts arranged opposite to each other. The two clamping positioning parts can selectively open and close to clamp the left and right ends of the base plate, or release the base plate.

[0019] As a preferred embodiment, the frame is further provided with a second translation drive unit, which drives the frame pressing device to translate left and right to selectively position it at the folding station, the laser cutting station, and the sewing station. The frame pressing device is provided with a locking cylinder, which can selectively lock or release the base plate. The frame pressing device is also connected to a third lifting drive unit. When the base plate reaches the folding station and is raised to its position by the second lifting drive unit, the third lifting drive unit controls the frame pressing device to descend, the locking cylinder locks the base plate, and the base plate moves with the frame pressing device to the sewing station.

[0020] As a preferred embodiment, after the base plate moves from the sewing station to the laser cutting station along with the pressing frame device, the locking cylinder releases the lock on the base plate at the laser cutting station, so that the base plate can descend along with the lifting plate.

[0021] As a preferred embodiment, the base plate is provided in two parts, one in a waiting state and the other in a working state; in the initial state, one is located in the waiting area and the other is located below the material folding station.

[0022] Compared with existing technologies, this invention has significant advantages and beneficial effects. Specifically, as can be seen from the above technical solution, its main feature is that the pressing frame device uses an electromagnet to hold the lower pressing plate for positioning, which has excellent reliability. This solves the problem that the spring steel sheet in traditional technologies is prone to fatigue damage, which affects the positioning reliability. At the same time, its structure is simple and easy to produce and install. Furthermore, the bottom support plate forms a reliable support at the bottom, ensuring that the fabric and the fabric after folding are accurately positioned at each stage, making the fabric less prone to deformation and improving the accuracy of the bag opening and sewing process. Moreover, the bottom support plate circulates up and down under the worktable, effectively saving space and reducing the area of ​​the worktable, thereby reducing the overall area occupied by the laser bag opening machine, which is beneficial for the storage and management of workshop equipment.

[0023] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0024] Figure 1 This is a top view of a laser bag-opening machine according to an embodiment of the present invention;

[0025] Figure 2 This is a front view of a laser bag-opening machine according to an embodiment of the present invention (the cover of the folding device is hidden and not shown);

[0026] Figure 3 yes Figure 1 Cross-sectional view at point C;

[0027] Figure 4 This is a perspective sectional view of a laser bag-opening machine according to an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the bottom support plate according to an embodiment of the present invention;

[0029] Figure 6 This is a perspective view of the material-folding device according to an embodiment of the present invention;

[0030] Figure 7 This is a rear view of the material bending device according to an embodiment of the present invention;

[0031] Figure 8 yes Figure 7 Diagram of section AA;

[0032] Figure 9 This is a bottom view of the material bending device according to an embodiment of the present invention;

[0033] Figure 10 yes Figure 9 Diagram of the BB section;

[0034] Figure 11 This is a perspective view of the electromagnet adsorption folded edge positioning structure according to an embodiment of the present invention;

[0035] Figure 12 This is an exploded view of the electromagnet adsorption folded edge positioning structure according to an embodiment of the present invention;

[0036] Figure 13 This is a top view (exploded view) of the electromagnet adsorption folded edge positioning structure according to an embodiment of the present invention;

[0037] Figure 14 This is a top view of the hemming and alignment mechanism according to an embodiment of the present invention;

[0038] Figure 15 This is a rear view of the material bending device according to an embodiment of the present invention;

[0039] Figure 16 This is a partial cross-sectional view of an embodiment of the present invention applied to a laser bag-opening machine.

[0040] Explanation of reference numerals in the attached diagram: Frame 301, Folding device 302, Laser cutting device 303, Sewing device 304, Frame pressing device 305, Base plate 306, Worktable 307, Folding station 308, Laser cutting station 309, Sewing station 310, Lifting plate 311, First lifting drive unit 312, Second lifting drive unit 313, First translation drive unit 314, Clamping cylinder 315, First cycle drive 316, Second translation drive unit 317, Mounting base 1, First opposite side folding unit 2, Second opposite side folding unit 3, Lifting drive mechanism 4, First folding knife 5, First motor 6, First lead screw 7, First slider 8, Second folding knife 9 10. Vertical part 10, horizontal part 11, second motor 12, second lead screw 13, second slider 14, motor base 15, horizontal connecting piece 16, outer pressure frame 201, upper pressure plate 202, lower pressure plate 203, electromagnet 204, first through hole 205, second through hole 206, third through hole 207, L-shaped positioning frame 208, cylinder 209, first connecting rod 210, second connecting rod 211, oblique connecting part 212, mounting base 1, first opposite side folding unit 2, second opposite side folding unit 3, lifting drive mechanism 4, first folding knife 5, first motor 6, first lead screw 7, first slider 8, second folding knife 9, vertical part 10, horizontal part 11, second motor 12. Detailed Implementation

[0041] Please refer to Figures 1 to 16 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0042] In the description of this invention, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0043] like Figures 1 to 5 As shown, a laser bag opening machine includes a frame 301 and a folding device 302, a laser cutting device 303, a sewing device 304, a frame pressing device 305, and a bottom support plate 306 disposed on the frame 301.

[0044] Typically, one of each of the folding device 302, laser cutting device 303, sewing device 304, and frame pressing device 305 is provided, and two of the base plates 306 are provided, one base plate 306 is in a waiting state, and the other base plate 306 is in a working state. Compared with the case of only one base plate 306, time is reduced and overall efficiency is improved.

[0045] The frame 301 is provided with a workbench 307. The workbench 307 is provided with a folding station 308, a laser cutting station 309 and a sewing station 310 arranged side by side. The folding device 302, the laser cutting device 303 and the sewing device 304 are respectively provided for the folding station 308, the laser cutting station 309 and the sewing station. The frame pressing device 305 and the bottom support plate 306 can be moved to selectively be located at the folding station 308, the laser cutting station 309 and the sewing station.

[0046] A first clearance window is provided on the workbench 307 corresponding to the laser cutting station 309. A lifting plate 311 is provided inside the first clearance window. The lifting plate 311 is connected to a first lifting drive unit 312 (such as a cylinder or a motor screw, or other drive methods capable of driving up and down movement) to make the lifting plate 311 move up and down below the first clearance window. A second lifting drive unit 313 (such as a cylinder or a motor screw, or other drive methods capable of driving up and down movement) is provided below the folding station 308. A space is provided below the workbench 307 between the folding station 308 and the laser cutting station 309. In the waiting area, the frame 301 is also equipped with a first translation drive unit 314. For example, the first translation drive unit 314 includes two clamping cylinders 315 and a first circulation drive 316 that drives the clamping cylinders 315 to translate left and right. The first circulation drive 316 can be a conveyor belt, connecting the two clamping cylinders 315 to the conveyor belt so that they translate with the conveyor belt. The two clamping cylinders 315 have telescopic rods arranged opposite each other, and the outer ends of the telescopic rods are connected to clamping positioning parts arranged opposite each other. The two clamping positioning parts can selectively open and close to clamp the left and right ends of the base plate 306, or release the base plate 306. The clamping positioning parts can be designed as L-shaped, having a supporting part and a clamping part. The supporting part is located below the base plate 306, and the clamping part is located at the left and right ends of the base plate 306 to ensure reliable clamping of the base plate 306.

[0047] The base plate 306 is positioned above the lifting plate 311 at the first clearance window and is lowered along with the lifting plate 311 by the action of the first lifting drive unit 312. The first translation drive unit 314 moves the base plate 306 horizontally below the workbench 307 to the waiting area. After a set time, the first translation drive unit 314 moves the base plate 306 horizontally to below the folding station 308 and is raised by the action of the second lifting drive unit 313 to be located below the pressing frame device 305 at the folding station 308. Typically, a second clearance window is provided on the workbench 307 corresponding to the folding station 308, and the base plate 306 is raised by the action of the second lifting drive unit 313 to be located at the second clearance window.

[0048] The frame 301 is also equipped with a second translation drive unit 317, which drives the frame pressing device 305 to translate left and right to selectively position it at the folding station 308, the laser cutting station 309, and the sewing station 310. For example, the second translation drive unit can use a motor lead screw as the second cycle drive.

[0049] The frame pressing device 305 is equipped with a locking cylinder, which can selectively lock or unlock the bottom support plate 306. The frame pressing device 305 is also connected to a third lifting drive unit. When the bottom support plate 306 reaches the folding station 308 and is raised to its position by the action of the second lifting drive unit 313, the third lifting drive unit controls the frame pressing device 305 to descend, the locking cylinder locks the bottom support plate 306, and the bottom support plate 306 moves to the right along with the frame pressing device 305 to the sewing station 310. The laser cutting station 309 also serves as the location for unloading the bottom support plate 306. After the bottom support plate 306 moves to the left from the sewing station 310 along with the frame pressing device 305 to the laser cutting station 309, the locking cylinder releases the lock on the bottom support plate 306 at the laser cutting station 309, so that the bottom support plate 306 can descend along with the lifting plate 311.

[0050] like Figures 6 to 10 As shown, the folding device 302 includes a mounting base 1, a first pair of folding edge units 2, a second pair of folding edge units 3, and a lifting drive mechanism 4. Specifically:

[0051] The first pair of folding units 2 are mounted on the mounting base 1. The first pair of folding units 2 includes two pairs of first folding blades 5 and a first motor drive mechanism that can selectively drive the two pairs of first folding blades 5 to open and close. The first motor drive mechanism includes a first motor 6 and a first lead screw 7. The first lead screw 7 extends horizontally and has two first sliders 8 threadedly connected to it. That is, the first sliders 8 are sleeved on the first lead screw 7 through internal threaded holes. Each of the two pairs of first folding blades 5 is individually connected to one of the first sliders 8. The first motor 6 drives the first lead screw 7 to rotate so that the two first sliders 8 can selectively slide towards or away from each other along the first lead screw 7. Usually, the internal threaded holes of the two first sliders 8 are designed with opposite threads, while the threads on the first lead screw 7 are consistent, which simplifies the manufacturing process. Alternatively, the two sections of the first lead screw 7 can be designed with opposite threads, so that the internal threaded holes of the two first sliders 8 are consistent, which can also meet the requirement of being driven by the first lead screw 7 to move towards or away from each other.

[0052] The second pair of folding units 3 are disposed on the mounting base 1. The second pair of folding units 3 includes two pairs of second folding blades 9 disposed on opposite sides and a second motor drive mechanism that can selectively drive the two pairs of second folding blades 9 to open and close. The first folding blade 5 and the second folding blade 9 each have a vertical portion 10 and a horizontal portion 11 connected to the lower end of the vertical portion 10. The horizontal portions 11 of the first folding blade 5 disposed on opposite sides extend in opposite directions, and the horizontal portions 11 of the second folding blades 9 disposed on opposite sides also extend in opposite directions. The second motor drive mechanism includes a second motor 12 and a second lead screw 13. The second lead screw 13 extends horizontally and has two second sliders 14 threadedly connected to it. The second sliders 14 are fitted onto the second lead screw 13 through internal threaded holes. Two opposite second folding blades 9 are each individually connected to one of the second sliders 14. The second motor 12 drives the second lead screw 13 to rotate so that the two second sliders 14 can selectively slide towards or away from each other along the second lead screw 13. Typically, the internal threaded holes of the two second sliders 14 are designed with opposite threads, while the threads on the second lead screw 13 are consistent. This simplifies manufacturing. Alternatively, the two sections of the second lead screw 13 can be designed with opposite threads, so that the internal threaded holes of the two second sliders 14 are consistent, which also satisfies the requirement of being driven by the second lead screw 13 to slide towards or away from each other.

[0053] The lifting drive mechanism 4 is mounted on the mounting base 1. The lifting drive mechanism 4 can selectively drive the second pair of side folding units 3 to move up and down relative to the mounting base 1. In this embodiment, since only a short-distance up and down movement of the second pair of side folding units 3 needs to be controlled, and the precision requirement is not high, a cylinder can be used as the drive. That is, the lifting drive mechanism 4 includes a cylinder, the piston rod of which extends vertically and is connected to the second pair of side folding units 3. The second pair of side folding units 3 includes a motor base 15, the second motor 12 and / or the second lead screw 13 are mounted on the motor base 15, and a transverse connecting member 16 is connected to one side of the motor base 15, with the outer end of the transverse connecting member 16 connected to the lower end of the piston rod.

[0054] The folding device is connected to the controller, which intelligently controls the operation of the first motor 6 and the second motor 12. When the folding device is applied to equipment such as a laser bag opening machine, the folding device is controlled by another lifting drive device, so that the entire folding device can be lifted and lowered.

[0055] The material breaking process is roughly as follows:

[0056] After the fabric with the laser-cut opening reaches the folding station, the lifting device first lowers the entire folding device to near the fabric. Then, the first motor 6 controls the two opposite first folding blades 5 to open back-to-back, folding the two opposite sides of the bag opening. Next, the second motor 12 controls the two opposite second folding blades 9 to slightly close towards each other. Then, the lifting drive mechanism 4 controls the entire second opposite folding unit 3 to descend. Then, the second motor 12 controls the two opposite second folding blades 9 to open back-to-back, folding the other two opposite sides of the bag opening. After that, the pressure frame descends to hold down the folded fabric. Then, the folding device returns to its original position: the second motor 12 controls the two opposite second folding blades 9 to slightly close towards each other, then the lifting drive mechanism 4 controls the entire second opposite folding unit 3 to rise, then the second motor 12 controls the two opposite second folding blades 9 to open back-to-back, and then the first motor 6 controls the two opposite first folding blades 5 to slightly close towards each other. At this point, the entire folding device rises and returns to its original position under the drive of the lifting device.

[0057] In this embodiment, the folding device 302 uses a motor-driven mechanism to control the opening and closing of the corresponding folding blades of the first pair of folding units 2 and the second pair of folding units 3. At the same time, a lifting drive mechanism 4 is provided to selectively drive the second pair of folding units 3 to move up and down relative to the mounting base 1, so that the folding action of each pair of sides has high precision and good controllability. In addition, the four sides are folded in two stages, which simplifies the structure of the folding device, makes it easier to manufacture, further improves the controllability of folding, and helps to improve the precision of folding operation and sewing processing.

[0058] like Figures 11 to 16 As shown, after folding the material, the folded edge needs to be positioned. In this embodiment, an electromagnet-type folding edge positioning structure is used. The pressing frame device includes an outer pressing frame 201, an upper pressing plate 202, a lower pressing plate 203, and an electromagnet 204. Usually, a structure such as a vertically adjustable pressing foot is also provided above the upper pressing plate 202.

[0059] The outer pressure frame 201 has a first through hole 205 extending vertically. A folding and alignment mechanism is installed on the outer pressure frame. The folding and alignment mechanism includes an alignment frame and a driving unit for opening and closing the alignment frame. There are two alignment frames, which are diagonally arranged L-shaped alignment frames 208. The two L-shaped alignment frames 208 form a rectangular frame. There are two driving units, and each driving unit diagonally pulls the L-shaped alignment frame 208. The two sets of L-shaped alignment frames 208 have diagonally arranged L-shaped alignment edges, which can selectively correspond to the first through hole 205. Usually, the two L-shaped alignment edges form a rectangular frame, which aligns the four sides of the bag opening to ensure accurate folding position. Under the action of the driving unit, the two sets of L-shaped alignment frames 208 move closer or further away along the diagonal direction to meet the needs of different stages of use. For example, during the alignment stage, the two are closer together, and after the folding action is completed, the two are slightly further apart to avoid each other and reserve the folding part for sewing processing. The L-shaped alignment frame 208 has a diagonal connecting portion 212 at its outer corner. The diagonal connecting portion 212 extends outward along the diagonal direction of the L-shaped alignment frame 208. The driving unit is a cylinder 209. The telescopic rod of the cylinder 209 extends forward and backward. The outer end of the telescopic rod of the cylinder 209 is connected to a first connecting rod 210 and a second connecting rod 211. One end of the first connecting rod 210 is hinged to the outer end of the telescopic rod of the cylinder 209, and the other end of the first connecting rod 210 is hinged to one end of the second connecting rod 211. The other end of the second connecting rod 211 is hinged to the outer end of the diagonal connecting portion 212. Specifically, with Figure 14 For example, if the operating side of the machine tool is defined as the front side, then the outer end of the telescopic rod of the cylinder 209 is the front end. For the L-shaped alignment frame 208 on the right side, the rear end of the first connecting rod 210 is hinged to the front end of the telescopic rod of the cylinder 209, the front end of the first connecting rod 210 is hinged to the rear end of the second connecting rod 211, and the front end of the second connecting rod 211 is hinged to the right end of the oblique connecting part 212.

[0060] The upper pressure plate 202 is located above the outer pressure frame 201 and covers the upper part of the alignment frame; the upper pressure plate 202 is provided with a second through hole 206 that runs vertically through the upper and lower parts, and the second through hole 206 is correspondingly provided with the first through hole 205.

[0061] The lower pressure plate 203 is provided corresponding to the first through hole 205 and located below the alignment frame. The lower pressure plate 203 is provided with a third through hole 207 that runs vertically through the frame. Typically, the dimensions of the third through hole 207, the second through hole 206, and the first through hole 205 increase sequentially. The dimensions refer to both the length and width.

[0062] The electromagnet 204 is mounted on the outer pressure frame 201, positioned above the lower pressure plate 203. When the electromagnet 204 is energized, it generates magnetic force, causing the lower pressure plate 203 to move upward under its attraction to clamp the bottom of the folded fabric (the fold is downward, so it can also refer to the bottom of the fold). When the electromagnet 204 is de-energized, the electromagnetic force disappears, and the lower pressure plate 203 falls downward a predetermined distance under its own weight (space is reserved on the outer pressure frame 201 for the lower pressure plate 203 to move up and down) to release the clamping effect on the fabric, facilitating fabric removal. This combination of electromagnet attraction and positioning on the lower pressure plate provides excellent reliability and solves the problem of fatigue damage to the spring steel sheet in traditional technologies, which affects positioning reliability. Furthermore, its simple structure makes it easy to manufacture and install.

[0063] Next, we will briefly introduce the automatic working process of the laser bag opening machine in this embodiment:

[0064] Step 1: The frame pressing device 305 clamps and loads the material at the laser cutting station 309; the fabric has been loaded onto the frame pressing device 305, and the laser cutting device 303 opens the bag opening on the fabric.

[0065] Step 2: The second translation drive unit 317 drives the frame pressing device 305 to move to the left to the folding station 308. At this time, the bottom support plate 306 is already in place below the folding station 308. The folding device 302 completes the folding. Then, the third lifting drive unit controls the frame pressing device 305 to descend. The locking cylinder locks the bottom support plate 306. The bottom support plate 306, along with the frame pressing device 305, moves to the right to the sewing station 310 under the drive of the second translation drive unit 317.

[0066] Step 3: At the sewing station 310, the sewing device 304 performs the first sewing operation;

[0067] Step 4: After the first sewing operation is completed, the second translation drive unit 317 drives the frame pressing device 305 and the base plate 306 to move to the left to the laser cutting station 309. The locking cylinder releases the lock on the base plate 306. At the same time, the second layer of fabric is placed at the sewing station 310.

[0068] Step 5: The bottom support plate 306 descends along with the lifting plate 311, and the first translation drive unit 314 moves the bottom support plate 306 to the waiting area below the workbench 307; at the same time, the second translation drive unit 317 drives the pressing frame device 305 to move to the right to the sewing station 310, and falls onto the second layer of fabric to perform the second sewing operation;

[0069] Step 6: If a third layer of fabric needs to be placed, the second translation drive unit 317 drives the frame pressing device 305 to move to the left to the laser cutting station 309 to avoid obstruction; at the same time, the third layer of fabric is placed at the sewing station 310; subsequently, the second translation drive unit 317 drives the frame pressing device 305 to move to the right to the sewing station 310, and it falls onto the third layer of fabric to perform the third sewing operation;

[0070] This process is repeated until N layers of fabric are sewn together.

[0071] Step 7: The second translation drive unit 317 drives the frame pressing device 305 to move to the left to the laser cutting station 309. The frame pressing device 305 releases its pressing and positioning function on the fabric, and the sewn product can be removed manually.

[0072] Then, at the laser cutting station 309, the next piece of fabric is loaded, and steps 1-7 are repeated. During laser cutting in step 1, the base plate 306 is already below the folding station 308 and is raised by the second lifting drive unit 313 to be below the pressing frame device 305 at the folding station 308. Throughout the cycle, two base plates 306 are provided: one in a waiting state and one in a working state; initially, one is located in the waiting area, and the other is located below the folding station 308.

[0073] The key design feature of this invention is that the pressing frame device uses an electromagnet to hold the lower pressing plate in place, ensuring high reliability. This solves the problem in traditional technology where the fatigue strength of the spring steel sheet is easily compromised, affecting positioning reliability. Furthermore, its simple structure facilitates production and installation. The bottom support plate provides reliable support at the bottom, ensuring precise positioning of the fabric and all aspects of the folded fabric, preventing fabric deformation and improving the accuracy of the opening and sewing process. Moreover, the bottom support plate circulates vertically under the worktable, effectively saving space and reducing the worktable area, thus reducing the overall area occupied by the laser bag opening machine, which is beneficial for equipment storage and management in the workshop.

[0074] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A laser bag-opening machine, comprising a frame and a folding device, a laser cutting device, a sewing device, a frame pressing device, and a base plate mounted on the frame; a worktable is provided on the frame, on which folding stations, laser cutting stations, and sewing stations are arranged side-by-side at intervals; the folding device, laser cutting device, and sewing device are respectively positioned corresponding to the folding station, laser cutting station, and sewing station; the frame pressing device and the base plate are movable to selectively occupy the folding station, laser cutting station, and sewing station, characterized in that: The frame pressing device includes an outer frame, an upper plate, a lower plate, and an electromagnet. The upper plate and the electromagnet are respectively mounted on the outer frame, with the electromagnet positioned above the lower plate. When the electromagnet is energized, it generates magnetic force, causing the lower plate to move upward under the attraction of the electromagnet. When the electromagnet is de-energized, the magnetic force disappears, and the lower plate falls downward a predetermined distance under its own weight. The outer frame has a first through hole running vertically through it. A folding and alignment mechanism is mounted on the outer frame, including an alignment frame and a drive unit for opening and closing the alignment frame. The upper plate is positioned above the outer frame and covers the alignment frame. The upper plate has a second through hole running vertically through it, corresponding to the first through hole. The lower plate corresponds to the first through hole and is positioned below the alignment frame. The lower plate has a third through hole running vertically through it. The folding device includes a mounting base, a first pair of folding units, a second pair of folding units, and a lifting drive mechanism. The first pair of folding units are mounted on the mounting base and include two pairs of first folding blades and a first motor drive mechanism that selectively drives the first folding blades to open and close. The second pair of folding units include two pairs of second folding blades and a second motor drive mechanism that selectively drives the second folding blades to open and close. The lifting drive mechanism is mounted on the mounting base and can selectively drive the second pair of folding units to move up and down relative to the mounting base. Below the workbench is a waiting area located between the folding station and the laser cutting station. The base plate waits in the waiting area and then moves to the area below the folding station. It then moves to the area below the sewing station along with the frame pressing device. After the first sewing operation, it moves to the area below the laser cutting station along with the frame pressing device. The frame pressing device removes the base plate at the laser cutting station, and the base plate is moved to the waiting area. At the same time, the second layer of fabric is placed at the sewing station, and the frame pressing device moves to the sewing station and falls down onto the second layer of fabric for the second sewing operation.

2. The laser bag-opening machine according to claim 1, characterized in that: A first clearance window is provided on the workbench corresponding to the laser cutting station. A lifting plate is provided inside the first clearance window. The lifting plate is connected to a first lifting drive unit so that the lifting plate can move up and down below the first clearance window. A second lifting drive unit is provided below the folding station. A waiting area is provided below the workbench between the folding station and the laser cutting station. A first translation drive unit is also provided on the frame. The bottom support plate is located above the lifting plate at the first clearance window and is lowered along with the lifting plate by the action of the first lifting drive unit. The first translation drive unit moves the bottom support plate to the waiting area. After a set time, the first translation drive unit moves the bottom support plate to the bottom of the folding station and is raised by the action of the second lifting drive unit to be located below the pressing frame device at the folding station.

3. The laser bag-opening machine according to claim 1, characterized in that: Both the first folding blade and the second folding blade have a vertical portion and a horizontal portion connected to the lower end of the vertical portion. The horizontal portions of the first folding blades arranged on two opposite sides extend in opposite directions, and the horizontal portions of the second folding blades arranged on two opposite sides also extend in opposite directions.

4. A laser bag-opening machine according to claim 1, characterized in that: Two alignment frames are provided, and the two alignment frames are diagonally arranged L-shaped alignment frames, forming a rectangular frame. Two drive units are provided accordingly, and each drive unit diagonally pulls the L-shaped alignment frame. The outer corner of the L-shaped alignment frame is provided with an oblique connecting part, which extends outward along the diagonal direction of the L-shaped alignment frame. The drive unit is a cylinder, and the telescopic rod of the cylinder extends back and forth. The outer end of the telescopic rod of the cylinder is connected to a first connecting rod and a second connecting rod. One end of the first connecting rod is hinged to the outer end of the telescopic rod of the cylinder, and the other end of the first connecting rod is hinged to one end of the second connecting rod. The other end of the second connecting rod is hinged to the outer end of the oblique connecting part.

5. A laser bag-opening machine according to claim 2, characterized in that: The first translation drive unit includes two clamping cylinders and a first cycle drive that drives the clamping cylinders to translate left and right. The two clamping cylinders have clamping positioning parts arranged opposite to each other. The two clamping positioning parts can selectively open and close to clamp the left and right ends of the base plate, or release the base plate.

6. A laser bag-opening machine according to claim 2, characterized in that: The frame is also equipped with a second translation drive unit, which drives the frame pressing device to move left and right to selectively position it at the folding station, the laser cutting station, and the sewing station; the frame pressing device is equipped with a locking cylinder, which can selectively lock or release the bottom support plate; the frame pressing device is also connected to a third lifting drive unit. When the bottom support plate reaches the folding station, it rises to the position under the action of the second lifting drive unit. Then, the third lifting drive unit controls the pressing frame device to descend, and the locking cylinder locks the bottom support plate. The bottom support plate moves horizontally to the sewing station along with the pressing frame device.

7. A laser bag-opening machine according to claim 6, characterized in that: After the base plate moves from the sewing station to the laser cutting station along with the pressing frame device, the locking cylinder releases the base plate at the laser cutting station so that the base plate can descend along with the lifting plate.

8. A laser bag-opening machine according to claim 1, characterized in that: There are two base plates, one in a waiting state and one in a working state; in the initial state, one is located in the waiting area and the other is located below the material folding station.

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