A multi-station sewing processing bag opening machine

Abstract

The application discloses a multi-station sewing processing bag opening machine, which comprises a rack, a workbench arranged on the rack, a hemming and pressing station, a laser bag opening station, a first sewing station and a second sewing station arranged on the workbench from left to right, and a bag opening hemming device, a laser cutting device and a moving device. The first sewing station and the second sewing station are two stations for placing accessories. The bag opening hemming device comprises a pressing mechanism and a hemming mechanism arranged above and below the workbench respectively. The moving device can move leftward and rightward and reciprocate between the hemming and pressing station, the laser bag opening station, the first sewing station and the second sewing station. The sewing device comprises a sewing head device and a lower rotating shuttle device arranged separately, and can move leftward and rightward and reciprocate between the first sewing station and the second sewing station. Thus, the multi-station sewing processing bag opening machine meets the requirement of multiple accessory sewing processing, is simple to operate, avoids occupying sewing time due to placing accessories, and effectively improves the production and processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of bag opening machines, and in particular to a bag opening machine for multi-station sewing processing. Background Technology

[0002] Taking garment bag opening processing as an example, the bag opening needs to be opened first, and then the corresponding fabric accessories need to be sewn. Currently, the industry uses automatic bag opening machines for processing. The folding mechanism on a typical automatic bag opening machine is located above the worktable, which requires a large amount of space above the worktable.

[0003] For example, CN 114855373 A discloses a pocket opening machine for clothing, including a frame with a worktable, a support frame, a sewing machine, a laser cutting mechanism, a folding mechanism, a clamping mechanism, a shaping mechanism, and a sliding mechanism. The sliding mechanism is located below the worktable; the laser cutting mechanism and the folding mechanism are sequentially arranged on the support frame; the worktable has strip-shaped through holes along the direction of the laser cutting mechanism and the folding mechanism as sliding channels; the shaping mechanism and the clamping mechanism are symmetrically arranged above the worktable; a vertical plate passes through the sliding channel, and the upper and lower ends of the vertical plate are respectively connected to the integral assembly composed of the sliding mechanism, the shaping mechanism, and the clamping mechanism; the integral assembly composed of the shaping mechanism and the clamping mechanism can be moved to the laser cutting mechanism, the sewing machine, or the folding mechanism respectively through the sliding mechanism; the laser cutting mechanism is used to cut the fabric into pocket pieces; the folding mechanism folds the pocket pieces; the clamping mechanism is used to clamp and fix the clothing fabric to be processed; and the shaping mechanism presses and shapes the clothing fabric and the pocket lip, then moves it below the sewing machine for sewing.

[0004] This type of bag opening machine, with the sewing machine fixed to the right front side of the worktable, is mainly suitable for products that can only be sewn once. If different accessories need to be sewn twice on the product, after the first sewing, the clamping and shaping mechanisms return to the loading position, the accessories are loaded onto the clamping and shaping mechanisms, and then moved to the bottom of the sewing machine for sewing. This operation is cumbersome, loading accessories takes time, and production efficiency is low. Moreover, this type of bag opening machine with the folding mechanism on top occupies a large space above the worktable, and it is not convenient to press and shape the folded edge of the bag opening, making it difficult to meet the needs of manufacturers with higher requirements for sewing quality and production efficiency.

[0005] Therefore, a new technical solution needs to be researched to address the above problems. Summary of the Invention

[0006] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide a multi-station sewing processing bag opening machine that meets the needs of multiple accessory sewing processes, is easy to operate, avoids occupying sewing time due to accessory placement, and effectively improves production efficiency.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A multi-station sewing and opening machine for opening bags includes: A frame; the frame is provided with a worktable, and from left to right on the worktable are arranged a folding and pressing station, a laser bag opening station, a first sewing station and a second sewing station; the first sewing station and the second sewing station are two stations where accessories can be placed; the worktable is provided with a first through groove that runs vertically through the folding and pressing station; A bag opening folding device; the bag opening folding device includes a pressing mechanism and a folding mechanism, the pressing mechanism being located above the workbench surface and the folding mechanism being located below the workbench surface; Laser cutting device; the laser cutting device is located to the right of the bag opening folding device; A transfer device; the transfer device can move left and right and back and forth between the hemming and pressing station, the laser bag opening station, the first sewing station and the second sewing station; A sewing device; the sewing device includes a separate upper sewing head device and a lower rotary hook device, the upper sewing head device includes a needle assembly and a first sewing drive unit for driving the needle assembly, and the lower rotary hook device includes a rotary hook assembly and a second sewing drive unit for driving the rotary hook assembly; the sewing device can move left and right back and forth between the first sewing station and the second sewing station to perform sewing processing at the first sewing station and the second sewing station respectively.

[0008] As a preferred option, During laser cutting, the laser cutting device is fixed in position, and the transfer device moves horizontally from the laser bag opening station toward the edge folding and pressing station.

[0009] As a preferred embodiment, the sewing devices share the same set of left and right translation drive units; Alternatively, the upper head assembly and the lower shuttle assembly can be driven independently to control left and right translation. The upper head assembly is driven to translate left and right by a first left and right translation drive unit, and the lower shuttle assembly is driven to translate left and right by a second left and right translation drive unit.

[0010] As a preferred embodiment, the lower shuttle device is connected to a shuttle lifting drive unit, which drives the lower shuttle device to move up and down, and the lower shuttle device and the shuttle lifting drive unit move left and right together.

[0011] As a preferred embodiment, the workbench surface is provided with a number of suction holes corresponding to the first sewing station and the second sewing station, so that the accessories can be suctioned and positioned after being placed.

[0012] As a preferred embodiment, the worktable surface is provided with two stop sections spaced lateral to each other on the rear side corresponding to the first and second sewing stations. The stop sections are raised and lowered by corresponding lifting cylinders. Furthermore, the worktable surface is provided with clearance holes for the corresponding stop sections to extend out. The clearance holes are designed as elongated strips extending laterally, allowing the left and right positions of the stop sections to be adjustable. The telescopic rod of the lifting cylinder extends upward and is driven to connect to a base. A translation adjustment cylinder is provided on the base. The telescopic rod of the translation adjustment cylinder extends laterally and is driven to connect to the stop sections.

[0013] As a preferred embodiment, the heat pressing mechanism includes a first lifting drive unit, a second lifting drive unit, a heat pressing part, and a pushing part; the first lifting drive unit drives the pushing part to move up and down relative to the heat pressing part, so that the pushing part can extend downward into the first through groove and exit upward; the second lifting drive unit drives the first lifting drive unit, the heat pressing part, and the pushing part to move up and down together; The folding mechanism includes a first folding mechanism and a second folding mechanism; the first folding mechanism includes a left folding knife and a right folding knife arranged on opposite sides, and a first folding driving unit, the first folding driving unit drives the left folding knife and the right folding knife to move towards each other in the left-right direction and move away from each other in the opposite direction; the second folding mechanism includes a front folding knife and a rear folding knife arranged on opposite sides, and a second folding driving unit, the second folding driving unit drives the front folding knife and the rear folding knife to move towards each other in the front-back direction and move away from each other in the opposite direction.

[0014] As a preferred embodiment, the folding mechanism further includes a third lifting drive unit, which drives the first folding mechanism and the second folding mechanism to move up and down together.

[0015] As a preferred embodiment, the transfer device includes a tray and a pressure frame; the pressure frame is located above the tray, and the pressure frame is connected to a pressure frame displacement driving unit, which drives the pressure frame to translate and move up and down relative to the tray; the tray is provided with a second through slot that extends vertically, and the tray is located above the plane of the worktable; the tray is connected to a fourth lifting driving unit, and the third lifting driving unit drives the transfer device to move up and down relative to the plane of the worktable; and the transfer device is also connected to a left and right translation driving unit, which drives the transfer device to translate left and right along the plane of the worktable.

[0016] As a preferred embodiment, the tray is provided with two sets of adjustment mechanisms. Each adjustment mechanism includes an adjustment cylinder, a first connecting rod, a second connecting rod, and an L-shaped piece. The corner of the L-shaped piece extends outward with an oblique extension. The telescopic rod of the adjustment cylinder extends forward along the Y-axis. The front end of the telescopic rod is hinged to the rear end of the first connecting rod, the front end of the first connecting rod is hinged to the outer end of the second connecting rod, and the inner end of the second connecting rod is hinged to the outer end of the oblique extension. The second through slot is formed by the two L-shaped pieces, and the size of the second through slot is controlled by the adjustment cylinder.

[0017] Compared with the prior art, the present invention has significant advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly involves setting a worktable on the frame, on which a folding and pressing station, a laser bag opening station, a first sewing station, and a second sewing station are arranged sequentially from left to right. Combined with the bag opening folding device, laser cutting device, transfer device, and sewing device, especially the sewing device can move left and right back and forth between the first sewing station and the second sewing station to perform sewing processing at the first sewing station and the second sewing station respectively. In this way, accessories can be placed at the first sewing station and the second sewing station respectively, which can meet the needs of multiple accessory sewing processing, simplify the operation, avoid occupying sewing time due to placing accessories, and effectively improve production efficiency.

[0018] Secondly, the ironing mechanism is cleverly positioned above the workbench, while the folding mechanism is positioned below it. This allows for folding operations to be performed below the workbench, effectively saving space above the workbench and making the equipment structure more compact. Furthermore, the folding mechanism can be ironed and shaped during folding, resulting in good folding quality, clear and neat creases, which is beneficial for improving the quality of subsequent sewing processes.

[0019] 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

[0020] Figure 1 This is a perspective view of a bag-opening machine according to an embodiment of the present invention; Figure 2 This is a first front view of a bag-opening machine according to an embodiment of the present invention; Figure 3 This is a second main view of the bag-opening machine according to an embodiment of the present invention (with the cover hidden). Figure 4 This is a third main view of the bag-opening machine according to an embodiment of the present invention (the frame and cover are hidden, and only the main functional components and the worktable are shown). Figure 5 yes Figure 4A three-dimensional diagram of the structure shown; Figure 6 This is a perspective view of a bag opening folding device according to an embodiment of the present invention; Figure 7 This is another perspective view of the bag opening folding device according to an embodiment of the present invention; Figure 8 This is a perspective view of a transfer device according to an embodiment of the present invention; Figure 9 This is a partial structural diagram of a bag-opening machine according to an embodiment of the present invention; Figure 10 This is a diagram illustrating an opening cut in an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached diagram: Workbench 10, First through groove 11, Pressing mechanism 20, First lifting drive unit 21, Second lifting drive unit 22, Pressing section 23, Pushing section 24, Lifting seat 25, Folding mechanism 30, Left folding knife 31, Right folding knife 32, First folding drive unit 33, Front folding knife 34, Rear folding knife 35, Second folding drive unit 36, Bag opening folding device 100, Transfer device 200, Sewing device 300, Frame 400, Laser cutting device 500, Base frame 401, Rear frame 402, Cover plate 403, Folding and pressing station A, Laser bag opening station B, First sewing station C, Second sewing station D, Suction... 1. Attached hole; 2. Pinhole plate; 3. Stop; 4. Lifting cylinder; 5. Clearance hole; 6. Base; 7. Translation adjustment cylinder; 201. Tray; 202. Pressure frame; 203. Second through groove; 204. Fourth lifting drive unit; 205. First left and right translation drive unit; 205'. Second left and right translation drive unit; 206. Adjustment mechanism; 2061. Adjustment cylinder; 2062. First connecting rod; 2063. Second connecting rod; 2064. L-shaped piece; 2065. Oblique extension; 2011. Guide groove; 301. Upper head device; 302. Lower shuttle device; 4021. First left and right guide rail; 4011. Second left and right guide rail; 3021. Shuttle lifting drive unit; 3021. Side a; Annular area b. Detailed Implementation

[0022] Please refer to Figures 1 to 10 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0023] 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.

[0024] A multi-station sewing bag opening machine includes a bag opening folding device 100, a transfer device 200, and a sewing device 300. The bag opening folding device 100 is the type of bag opening folding device 100 described above. After the bag opening is folded, the fabric is transferred to the sewing station by the transfer device 200, where the sewing device 300 sews the fabric. Typically, at least one or more layers of fabric are sewn together at the folded area, and the sewing is performed once or multiple times. Specifically, in this embodiment, the bag opening machine includes a frame 400 and a bag opening folding device 100, a laser cutting device 500, a transfer device 200, and a sewing device 300 mounted on the frame 400. The bag opening folding device 100 is the type of bag opening folding device 100 described above. In this embodiment, the frame 400 includes a base frame 401 and a rear side frame 402. The worktable 10 is disposed on the top of the base frame 401, and the rear side frame 402 extends upward from the rear side of the top of the base frame 401, such that the rear side frame 402 is located behind the worktable 10. A cover plate 403 is provided on the base frame 401 and the rear side frame 402 for covering and protection.

[0025] The workbench 10 is arranged from left to right as follows: a hemming and pressing station A, a laser bag opening station B, a first sewing station C, and a second sewing station D. The first sewing station C and the second sewing station D are two stations for placing fabric. Several suction holes 1 are provided on the workbench 10 corresponding to the first sewing station C and the second sewing station D to facilitate fabric placement and positioning. A perforated plate 2 is provided on the workbench 10 corresponding to both the first sewing station C and the second sewing station D. The perforated plate 2 is detachably installed on the workbench 10 (an installation window is provided on the workbench 10). Furthermore, two stop portions 3 with a left-right spacing are provided on the worktable 10 corresponding to the rear sides of the first sewing station C and the second sewing station D. The stop portions 3 are raised and lowered by corresponding lifting cylinders 4, which are located below the worktable 10. The upper stop portion protrudes above the worktable 10. The operator can place the fabric between the two stop portions 3 corresponding to the first sewing station C and the second sewing station D, which facilitates quick alignment of the fabric. A clearance hole 5 is provided on the worktable 10 for the corresponding stop portions 3 to extend out. The clearance hole 5 is usually designed as a long strip extending left and right, allowing the left and right positions of the stop portions 3 to be adjustable, thus satisfying the alignment of fabrics of a certain size. For example, the telescopic rod of the lifting cylinder 4 extends upward and is driven to connect to the base 6. A translation adjustment cylinder 7 is provided on the base 6. The telescopic rod of the translation adjustment cylinder 7 extends in the left and right direction and is driven to connect to the stop part 3. In this way, the translation adjustment cylinder 7 automatically adjusts the relative position of the stop part 3 in the left and right direction, while the lifting cylinder 4 controls the lifting height of the stop part 3.

[0026] The bag opening folding device 100 includes a pressing mechanism 20 and a folding mechanism 30; a first through groove 11 is provided on the workbench 10; the pressing mechanism 20 is located above the workbench 10; and the folding mechanism 30 is located below the workbench 10. Compared with the traditional method where the folding mechanism 30 is located above the workbench 10, this effectively saves space above the workbench 10. Specifically: the pressing mechanism 20 includes a first lifting drive unit 21, a second lifting drive unit 22, a pressing part 23, and a pushing part 24; the first lifting drive unit 21 drives the pushing part 24 to move up and down relative to the pressing part 23, so that the pushing part 24 can extend downward into and exit upward from the first through groove 11; the second lifting drive unit 22 drives the first lifting drive unit 21, the pressing part 23, and the pushing part 24 to move up and down together. The pressing part 23 is located above the worktable 10. During operation, the bottom end of the pressing part 23 presses against the fabric, so that the folded edge maintains a good effect, and the folds are obvious and neat, which is conducive to improving the quality of subsequent sewing processing; the pressing part 23 surrounds a rectangular ring structure, and the pushing part 24 is located in the internal through hole of the ring structure, which can move up and down. The bottom surface of the ring structure of the pressing part 23 serves as the pressing surface. During heat pressing, steam is sprayed onto the folded edges of the fabric. The pressing surface has a high temperature, which forms a heat-pressing effect with the fabric, heat-setting the folded edges. During heat pressing, the bottom of the folded edges is also pressed upwards by the tops of the corresponding left, right, front, and rear folding blades, thus effectively clamping and shaping the folded edges from both above and below. The heat pressing mechanism 20 also includes a lifting base 25. The first lifting drive unit 21 is disposed on the lifting base 25, the heat pressing part 23 is disposed on the lifting base 25, and the second lifting drive unit 22 is connected to the lifting base 25 to drive the lifting base 25 to move up and down. For example, the second lifting drive unit 22 uses a motor to drive a gear to rotate around the Y-axis, and the rotation of the gear drives a vertical rack to move up and down along the Z-axis. The vertical rack is connected to the lifting base 25.The folding mechanism 30 includes a first folding mechanism 30 and a second folding mechanism 30. The first folding mechanism 30 includes a left folding blade 31 and a right folding blade 32 arranged on opposite sides, and a first folding driving unit 33. The first folding driving unit 33 drives the left folding blade 31 and the right folding blade 32 to move towards each other in the left-right direction, facing directly below the first through groove 11, and to move away in the opposite direction, so as to fold the left and right edges of the fabric opening to the left and right respectively. The second folding mechanism 30 includes a front folding blade 34 and a rear folding blade 35 arranged on opposite sides, and a second folding driving unit 36. The second folding driving unit 36 ​​drives the front folding blade 34 and the rear folding blade 35 to move towards each other in the front-back direction, facing directly below the first through groove 11, and to move away in the opposite direction, so as to fold the front and back edges of the fabric opening to the front and back respectively. Both the first folding drive unit 33 and the second folding drive unit 36 ​​include a forward and reverse motor and a lead screw driven by the forward and reverse motor. Two internally threaded sliders are threadedly connected to the lead screw. The two internally threaded sliders of the first folding drive unit 33 are respectively connected to the left folding blade 31 and the right folding blade 32, and the two internally threaded sliders of the second folding drive unit 36 ​​are respectively connected to the front folding blade 34 and the rear folding blade 35. When the forward and reverse motor drives the lead screw to rotate forward, the two internally threaded sliders on the lead screw move towards each other along the lead screw; when the forward and reverse motor drives the lead screw to rotate in reverse, the two internally threaded sliders on the lead screw move away from each other along the lead screw. The folding mechanism 30 also includes a third lifting drive unit 37, which drives the first folding mechanism 30 and the second folding mechanism 30 to move up and down together. The upward movement is completed, directly below the first through groove 11.

[0027] The transfer device 200 can travel back and forth between the hemming and pressing station A, the laser opening station B, the first sewing station C, and the second sewing station D. The transfer device 200 includes a tray 201 and a pressure frame 202; the pressure frame 202 is located above the tray 201 and is connected to a pressure frame displacement driving unit, which drives the pressure frame 202 to translate and move vertically relative to the tray 201; the tray 201 has a second through slot 203 extending vertically, and is located above the plane of the worktable 10; the tray 201 is connected to a fourth lifting driving unit 204, which drives the transfer device 200 to move vertically relative to the plane of the worktable 10; and the transfer device 200 is also connected to a left-right translation driving unit 205, which drives the transfer device 200 to translate horizontally along the plane of the worktable 10. The pressure frame displacement driving unit includes a pressure frame front-to-back displacement driving unit and a pressure frame up-to-down displacement driving unit; the pressure frame front-to-back displacement driving unit drives the pressure frame 202 to move back and forth, and the pressure frame up-to-down displacement driving unit drives the pressure frame front-to-back displacement driving unit and the pressure frame 202 to move up and down together. The tray 201 is provided with two sets of adjustment mechanisms 206. Each adjustment mechanism 206 includes an adjustment cylinder 2061, a first connecting rod 2062, a second connecting rod 2063, and an L-shaped piece 2064. The L-shaped piece 2064 includes a horizontally extending portion extending left and right and a longitudinally extending portion extending front and back. An obliquely extending portion 2065 extends outward from the corner of the L-shaped piece 2064. The telescopic rod of the adjustment cylinder 2061 extends forward along the Y-axis. The left and right direction is defined as the X-axis, the front and back direction is defined as the Y-axis, and the up and down direction is defined as the Z-axis. The front end of the telescopic rod is hinged to the rear end of the first connecting rod 2062. The front end of the first connecting rod 2062 is hinged to the outer end of the second connecting rod 2063. The inner end of the second connecting rod 2063 is hinged to the outer end of the obliquely extending portion 2065. The tray 201 is provided with a guide groove 2011, which allows the obliquely extending portion 2065 to move obliquely within the guide groove 2011. The second through groove 203 is formed by two L-shaped pieces 2064, and the size of the second through groove 203 is controlled by the adjusting cylinder 2061 (specifically, the front-to-back width and left-to-right length of the second through groove 203 are adjusted). Figure 9 As shown, the adjusting cylinder 2061 is located on the rear side of the tray 201. When the telescopic rod extends forward, the L-shaped piece 2064 is pulled outward, and at this time, the size of the second through groove 203 is enlarged. Conversely, if the telescopic rod retracts backward, the L-shaped piece 2064 is pushed outward and inward, and at this time, the size of the second through groove 203 is reduced.

[0028] The sewing device 300 includes a separate upper sewing head device 301 and a lower rotary hook device 302. The upper sewing head device 301 includes a needle assembly and a first sewing drive unit for driving the needle assembly. The lower rotary hook device 302 includes a rotary hook assembly and a second sewing drive unit for driving the rotary hook assembly. The sewing device 300 can move left and right back and forth between the first sewing station C and the second sewing station D to perform sewing processing at the first sewing station C and the second sewing station D respectively. The sewing device 300 can share the same set of left and right translation drive units, or the upper head device 301 and the lower shuttle device 302 can be driven independently to control left and right translation. For example, the upper head device 301 is driven to translate left and right by the first left and right translation drive unit 205, while the lower shuttle device 302 is driven to translate left and right by the second left and right translation drive unit 205'. Furthermore, a corresponding first left and right guide rail 4021 is provided on the rear frame 402 to guide and position the left and right translation of the upper head device 301, and a corresponding second left and right guide rail 4011 is provided on the base frame 401 to guide and position the left and right translation of the lower shuttle device 302. Typically, the lower shuttle device 302 is connected to a shuttle lifting drive unit 3021. The shuttle lifting drive unit 3021 drives the lower shuttle device 302 to move vertically, and the second left-right translation drive unit 205' drives the lower shuttle device 302 and the shuttle lifting drive unit 3021 to translate horizontally together. In the left-right translation state or when preparing to translate horizontally, the lower shuttle device 302 is in a descending state. After reaching the corresponding first sewing station C and second sewing station D, the shuttle lifting drive unit 3021 drives the lower shuttle device 302 to rise into position, maintaining a set distance from the bottom surface of the corresponding needle plate 2 to meet the matching requirements of the needle assembly and the shuttle assembly.

[0029] The workflow of the bag-opening machine described in this embodiment is as follows: Step 1: Load the fabric that needs to be opened onto the transfer device 200.

[0030] Step 2: The transfer device 200 is located at the laser bag opening station B, and a slit is formed by the laser cutting device 500. The slit is approximately as shown in the figure. Figure 10 As shown: a straight seam connects the two back-to-back V-shaped seams. During laser cutting, the laser cutting device is in a fixed position, and the transfer device moves horizontally from the laser bag opening station toward the edge folding and pressing station.

[0031] Step 3: The transfer device 200 transfers the material to the folding and pressing station A. The pusher 24 extends into the first through groove 11 to fold the four sides a of the cut downwards. The first folding mechanism 30 and the second folding mechanism 30 fold the four sides a outwards along the bottom of the workbench 10. The pressing part 23 presses against the annular area b on the top of the fabric, corresponding to the four sides a, to press and shape the folded edge of the bag opening. Typically, the folding and pressing can be maintained for a certain duration as set.

[0032] Step 4: The pressing mechanism 20 resets (upward), and the folding mechanism 30 resets (for example: the left folding blade 31, the right folding blade 32, the front folding blade 34, and the rear folding blade 35 reset inward, and the first folding mechanism 30 and the second folding mechanism 30 reset downward).

[0033] Step 5: The transfer device 200 moves upward and then moves to the right to the first sewing station C (the first accessory has been placed in the first sewing station C before the transfer device 200 reaches the first sewing station C); the upper sewing head device 301 and the lower rotary hook device 302 move to the left to the first sewing station C (or, the upper sewing head device 301 and the lower rotary hook device 302 are already waiting in the first sewing station C).

[0034] Step 6: The transfer device 200 moves downward, the tray 201 presses onto the first accessory, and the sewing device 300 performs the first sewing process to sew the fabric and the first accessory together.

[0035] Step 7: The transfer device 200 moves upward and then moves to the right to the second sewing station D (the second accessory has been placed in the second sewing station D before the transfer device 200 reaches the second sewing station D); the upper sewing head device 301 and the lower rotary hook device 302 move to the right to the second sewing station D (or, the upper sewing head device 301 and the lower rotary hook device 302 wait in advance at the second sewing station D).

[0036] Step 8: The transfer device 200 moves downward, the tray 201 presses onto the second accessory, and the sewing device 300 performs a second sewing process to sew the second accessory and the fabric together.

[0037] For situations requiring further sewing, a third accessory can be placed at the first sewing station C. The transfer device 200 moves upward and then to the left to the first sewing station C. The upper sewing head device 301 and the lower rotary hook device 302 move to the left to the first sewing station C. The transfer device 200 moves downward, and the tray 201 presses down on the third accessory. The sewing device 300 performs a third sewing operation to connect the third accessory to the fabric. A fourth accessory can even be placed at the second sewing station D… and so on, repeatedly using the first sewing station C and the second sewing station D. The sewing device 300 moves back and forth, left and right, switching between the first sewing station C and the second sewing station D to perform sewing operations.

[0038] from Figure 1 It can be seen that the arrangement of the hemming and pressing station A, the laser bag opening station B, the first sewing station C, and the second sewing station D is relatively compact. In particular, the hemming and pressing station A and the laser bag opening station B are set up adjacent to each other. The laser bag opening station B serves as the loading and unloading station. Since the hemming mechanism 30 is located below the worktable 10, the space of the hemming and pressing station A can be utilized. In conjunction with steps 1, 2, and 3, in this embodiment, when the fabric to be opened is loaded at the laser bag opening station B and laser cutting is performed, the laser cutting device 500 does not move horizontally. It relies on the transfer device 200 to move horizontally. The laser cutting device 500 makes cuts on the fabric by translating and moving forward and backward. When moving left and right, the transfer device 200 moves to the left to the folding and pressing station A. In other words, while performing the laser cutting process, the transfer device 200 gradually moves to the left to the folding and pressing station A. On the one hand, it cleverly utilizes the adjacent laser opening station B and the folding and pressing station A as the space required for the translation of the transfer device 200 during laser cutting. On the other hand, it saves the time required to move to the folding and pressing station A separately after laser cutting. The bag opening machine in this embodiment features a folding and pressing station A, a laser bag opening station B, a first sewing station C, and a second sewing station D arranged from left to right on the worktable 10. Furthermore, a specially structured bag opening folding device 100, a laser cutting device 500, a transfer device 200, and a sewing device 300 are installed on the frame. This effectively improves the efficiency of integrated bag opening, folding, and sewing operations. Moreover, it reduces the overall front-to-back width of the bag opening machine, allowing two machines to be placed back-to-back in actual use. The space occupied by one traditional bag opening machine can be used to accommodate two innovatively designed machines, which is beneficial for workshop storage and management, and also facilitates the control of the bag opening machines by staff.

[0039] In actual use, depending on the processing requirements of different products, the bag opening machine may only require one sewing operation, meaning only one sewing station is needed. Therefore, the innovatively designed bag opening machine can meet the sewing processing needs of bag-opening products requiring either one or multiple sewing operations.

[0040] The key design feature of this invention lies in the inclusion of a worktable on a frame. From left to right, the worktable is equipped with a folding and pressing station, a laser bag-opening station, a first sewing station, and a second sewing station. Combined with a bag-opening folding device, a laser cutting device, a transfer device, and a sewing device, the sewing device can move left and right back and forth between the first and second sewing stations to perform sewing processing at each station. This allows accessories to be placed at either station, satisfying the need for multiple accessory sewing operations. The operation is simple, avoids wasting sewing time on accessory placement, and effectively improves production efficiency. Secondly, the pressing mechanism 20 is cleverly positioned above the worktable 10, while the folding mechanism 30 is positioned below the worktable 10. This allows for folding operations to be performed below the worktable 10, effectively saving space above the worktable 10 and making the equipment structure more compact. Furthermore, the folding mechanism can press and shape the folded area of ​​the bag opening during folding, resulting in good folding effect, clear and neat creases, which is beneficial to improving the quality of subsequent sewing processes.

[0041] 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 bag-opening machine for multi-station sewing processing, characterized in that, Including: The machine frame is equipped with a worktable, on which, from left to right, are arranged a folding and pressing station, a laser bag opening station, a first sewing station, and a second sewing station; the first and second sewing stations are two stations where accessories can be placed; a first through groove is provided on the worktable corresponding to the folding and pressing station; A bag opening folding device; the bag opening folding device includes a pressing mechanism and a folding mechanism. The pressing mechanism is located above the workbench, and the folding mechanism is located below the workbench. The pressing mechanism includes a first lifting drive unit, a second lifting drive unit, a pressing part, and a pushing part. The first lifting drive unit drives the pushing part to move up and down relative to the pressing part, so that the pushing part can extend downward into and exit upward from the first through groove. The second lifting drive unit drives the first lifting drive unit, the pressing part, and the pushing part to move up and down together. The folding mechanism includes a first folding mechanism and a second folding mechanism. The first folding mechanism includes a left folding knife and a right folding knife arranged on opposite sides. The device includes a blade and a first folding drive unit. The first folding drive unit drives the left and right folding blades to move towards each other in the left-right direction and move away from each other in the opposite direction. The second folding mechanism includes a front folding blade, a rear folding blade, and a second folding drive unit. The second folding drive unit drives the front and rear folding blades to move towards each other in the front-back direction and move away from each other in the opposite direction. During operation, the bottom end of the pressing part presses against the top of the folded part of the fabric. The bottom of the folded part is pressed upward by the tops of the corresponding left, right, front, and rear folding blades to clamp and shape the folded part. Laser cutting device; the laser cutting device is located to the right of the bag opening folding device; Transfer device; The transfer device can move left and right back and forth between the hem pressing station, the laser bag opening station, the first sewing station and the second sewing station; When laser cutting is performed, the laser cutting device is fixed in position, and the transfer device moves from the laser bag opening station toward the hem pressing station. A sewing device; the sewing device includes a separate upper sewing head device and a lower rotary hook device. The upper sewing head device includes a first sewing drive unit with a needle assembly and a drive needle assembly. The lower rotary hook device includes a second sewing drive unit with a rotary hook assembly and a drive rotary hook assembly. The sewing device can move left and right back and forth between a first sewing station and a second sewing station to perform sewing processing at the first sewing station and the second sewing station respectively.

2. The bag-opening machine for multi-station sewing processing according to claim 1, characterized in that, The sewing devices share the same set of left and right translation drive units; or, the upper sewing head device and the lower rotary hook device are each driven separately to control left and right translation, with the upper sewing head device driven by the first left and right translation drive unit and the lower rotary hook device driven by the second left and right translation drive unit.

3. The bag-opening machine for multi-station sewing processing according to claim 1, characterized in that, The lower shuttle device is connected to a shuttle lifting drive unit, which drives the lower shuttle device to move up and down, and the lower shuttle device and the shuttle lifting drive unit move left and right together.

4. A bag-opening machine for multi-station sewing processing according to claim 1, characterized in that, Several suction holes are provided on the workbench corresponding to the first and second sewing stations to facilitate the suction and positioning of the parts after they are placed.

5. A bag-opening machine for multi-station sewing processing according to claim 4, characterized in that, The worktable is equipped with two stops with a left-right spacing on the rear side corresponding to the first and second sewing stations. The stops are raised and lowered by corresponding lifting cylinders. In addition, the worktable is provided with clearance holes for the corresponding stops to extend out. The clearance holes are designed as elongated strips extending left and right, so that the left and right positions of the stops are adjustable. The telescopic rod of the lifting cylinder extends upward and drives the base. The base is equipped with a translation adjustment cylinder. The telescopic rod of the translation adjustment cylinder extends in the left and right direction and drives the stops.

6. A bag-opening machine for multi-station sewing processing according to claim 1, characterized in that, The folding mechanism also includes a third lifting drive unit, which drives the first folding mechanism and the second folding mechanism to move up and down together.

7. A bag-opening machine for multi-station sewing processing according to claim 1, characterized in that, The transfer device includes a tray and a pressure frame; the pressure frame is located above the tray and is connected to a pressure frame displacement drive unit, which drives the pressure frame to move horizontally and vertically relative to the tray; the tray is provided with a second through slot that runs vertically through it, and the tray is located above the plane of the worktable. The tray is connected to a fourth lifting drive unit, which drives the transfer device to move vertically relative to the plane of the worktable; and the transfer device is also connected to a left-right translation drive unit, which drives the transfer device to translate horizontally along the plane of the worktable.

8. A bag-opening machine for multi-station sewing processing according to claim 7, characterized in that, The tray is equipped with two sets of adjustment mechanisms, each including an adjustment cylinder, a first connecting rod, a second connecting rod, and an L-shaped plate. The corner of the L-shaped plate extends outward with an oblique extension. The telescopic rod of the adjustment cylinder extends forward along the Y-axis. The front end of the telescopic rod is hinged to the rear end of the first connecting rod, the front end of the first connecting rod is hinged to the outer end of the second connecting rod, and the inner end of the second connecting rod is hinged to the outer end of the oblique extension. The second through slot is formed by two L-shaped plates, and the size of the second through slot is controlled by the adjustment cylinder.

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