Bag opening edge folding device and bag opening machine

Abstract

The utility model discloses a bag opening edge folding device and a bag opening machine. The bag opening edge folding device comprises a working table. A through groove which is through up and down is formed in the working table; a pressing mechanism; the pressing mechanism is positioned above the working table; the pressing mechanism comprises a first lifting driving unit, a second lifting driving unit, a pressing part and a pushing part; the first lifting driving unit drives the pushing part to move up and down relative to the pressing part, so that the pushing part can extend into the through groove downwards and retreat from the through groove upwards; the second lifting driving unit drives the first lifting driving unit, the pressing part and the pushing part to move up and down together; an edge folding mechanism; and the edge folding mechanism is positioned below the working table. Therefore, the space above the working table top is effectively saved, the equipment structure is more compact, the edge folding part of the bag opening can be pressed and shaped during edge folding, the edge folding effect is good, creases are obvious, regular and consistent, and improvement of the subsequent sewing processing quality is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of bag opening machines, in particular to a bag mouth hemming device and a bag opening machine. Background Art

[0002] Taking the processing of clothing bag mouths as an example, it is necessary to first open the bag mouth and then sew the corresponding fabric accessories. At present, automatic bag opening machines are used for processing in the industry. The folding mechanism commonly configured on automatic bag opening machines is arranged above the workbench, which requires a large amount of space above the workbench.

[0003] For example, CN 114855373 A discloses a bag opening machine for clothing bag mouths, which includes a frame with a workbench, a support frame, a sewing machine, a laser cutting mechanism, a folding mechanism, a clamping mechanism, a shaping mechanism and a sliding mechanism. Among them, the folding mechanism is arranged above the workbench. The folding mechanism includes a longitudinal lifting mechanism, two transverse moving mechanisms, a mounting seat and a rectangular structure surrounded by a front folding knife, a rear folding knife, a left folding knife and a right folding knife. The longitudinal lifting mechanism and the transverse moving mechanism are respectively used to drive the lifting and transverse movement of the folding knife. The transverse moving mechanism includes a y-direction moving mechanism and an x-direction moving mechanism. The y-direction moving mechanism in it drives the y-direction transverse movement of the front folding knife or the rear folding knife; the second transverse moving mechanism drives the x-direction transverse movement of the left folding knife or the right folding knife. It can be seen that such a bag opening machine with an upper folding mechanism occupies a large amount of space above the workbench, and it is not convenient to press and shape the bag mouth hemming part, and it is difficult to meet the needs of manufacturers with higher requirements for sewing quality and production efficiency.

[0004] Therefore, it is necessary to study a new technical solution to solve the above problems. Summary of the Utility Model

[0005] In view of this, in view of the deficiencies of the existing technology, the main purpose of the present utility model is to provide a bag mouth hemming device and a bag opening machine, which effectively save the space above the workbench surface, make the equipment structure more compact, and can press and shape the bag mouth hemming part during hemming, so that the hemming retention effect is good, the creases are obvious and regular, which is beneficial to the improvement of the subsequent sewing processing quality.

[0006] To achieve the above purpose, the present utility model adopts the following technical solutions:

[0007] A bag mouth hemming device, comprising:

[0008] A workbench surface; a first through groove penetrating up and down is arranged on the workbench surface;

[0009] Pressing and ironing mechanism; the pressing and ironing mechanism is located above the workbench surface; the pressing and ironing mechanism includes a first lifting drive unit, a second lifting drive unit, a pressing and ironing part, and a material pushing part; the first lifting drive unit drives the material pushing part to move up and down relative to the pressing and ironing part, so that the material pushing part can extend downward and withdraw upward from the first through groove; the second lifting drive unit drives the first lifting drive unit, the pressing and ironing part, and the material pushing part to move up and down together;

[0010] Edge folding mechanism; the edge folding mechanism is located below the workbench surface.

[0011] As a preferred solution, the edge folding mechanism includes a first edge folding mechanism and a second edge folding mechanism; the first edge folding mechanism includes a left edge folding knife, a right edge folding knife arranged on opposite sides left and right, and a first edge folding drive unit, and the first edge folding drive unit drives the left edge folding knife and the right edge folding knife to move closer and farther away from each other in the left-right direction; the second edge folding mechanism includes a front edge folding knife, a rear edge folding knife arranged on opposite sides front and rear, and a second edge folding drive unit, and the second edge folding drive unit drives the front edge folding knife and the rear edge folding knife to move closer and farther away from each other in the front-rear direction.

[0012] As a preferred solution, the first edge folding drive unit and the second edge folding drive unit both include a forward and reverse motor and a lead screw driven to rotate by the forward and reverse motor; two internally threaded sliders are respectively sleeved on the lead screw in a threaded connection manner; the two internally threaded sliders of the first edge folding drive unit are respectively connected to the left edge folding knife and the right edge folding knife, and the two internally threaded sliders of the second edge folding drive unit are respectively connected to the front edge folding knife and the rear edge folding knife; when the forward and reverse motor drives the lead screw to rotate forward, the two internally threaded sliders on the lead screw move closer to 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.

[0013] As a preferred solution, the edge folding mechanism further includes a third lifting drive unit, and the third lifting drive unit drives the first edge folding mechanism and the second edge folding mechanism to move up and down together.

[0014] As a preferred solution, the pressing and ironing part is arranged in a ring structure, the material pushing part is movably located in the inner through hole of the ring structure up and down, and the bottom surface of the ring structure of the pressing and ironing part serves as the pressing and ironing surface.

[0015] As a preferred solution, the pressing and ironing mechanism further includes a lifting seat, the first lifting drive unit is arranged on the lifting seat, the pressing and ironing part is arranged on the lifting seat, and the second lifting drive unit is connected to the lifting seat to drive the lifting seat to move up and down.

[0016] An open - bag machine includes a bag - mouth hemming device, a transfer device, and a sewing device. The bag - mouth hemming device is the one described in any of the previous items.

[0017] As a preferred solution, the transfer device includes a tray and a pressing frame; the pressing frame is located above the tray, the pressing frame is connected to a pressing - frame displacement driving unit, and the pressing - frame displacement driving unit drives the pressing frame to translate and move up and down relative to the tray; a second through - slot that penetrates up and down is provided on the tray, the tray is located above the plane where the workbench surface is located, the tray is connected to a fourth lifting driving unit, and the fourth lifting driving unit drives the transfer device to move up and down relative to the plane where the workbench surface is located; and, the transfer device is also connected to a left - right translation driving unit, and the left - right translation driving unit drives the transfer device to translate left and right along the plane where the workbench surface is located.

[0018] As a preferred solution, the pressing - frame displacement driving unit includes a pressing - frame front - rear displacement driving unit and a pressing - frame up - down displacement driving unit; the pressing - frame front - rear displacement driving unit drives the pressing frame to move back and forth, and the pressing - frame up - down displacement driving unit drives the pressing - frame front - rear displacement driving unit and the pressing frame to move up and down together.

[0019] As a preferred solution, two sets of adjusting mechanisms are provided on the tray. The adjusting mechanism includes an adjusting cylinder, a first connecting rod, a second connecting rod, and an L - shaped piece. An obliquely extending portion extends outward at the corner of the L - shaped piece; the telescopic rod of the adjusting cylinder extends forward along the Y - axis direction, 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, the inner end of the second connecting rod is hinged to the outer end of the obliquely extending portion, and the second through - slot is formed by enclosing two of the L - shaped pieces. The size of the second through - slot is controlled by the adjusting cylinder.

[0020] Compared with the prior art, the present utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above - mentioned technical solutions, it mainly and ingeniously arranges the pressing and ironing mechanism above the workbench surface and the hemming mechanism below the workbench surface, realizes hemming operation below the workbench surface, effectively saves the space above the workbench surface, makes the structure of the equipment more compact, and can press and shape the bag - mouth hemming part during hemming, so that the hemming has a good holding effect, the creases are obvious and regular, which is beneficial to improving the quality of subsequent sewing processing.

[0021] To more clearly illustrate the structural features and functions of the present utility model, the following will combine the drawings and specific embodiments to elaborate on the present utility model in detail. Description of the Drawings

[0022] Figure 1 is a three-dimensional view of the bag-opening machine according to an embodiment of the present utility model;

[0023] Figure 2 is the first front view of the bag-opening machine according to an embodiment of the present utility model;

[0024] Figure 3 is the second front view of the bag-opening machine according to an embodiment of the present utility model (in the state where the housing is hidden);

[0025] Figure 4 is the third front view of the bag-opening machine according to an embodiment of the present utility model (the frame and the housing are hidden, only the main functional components and the workbench surface are shown);

[0026] Figure 5 is Figure 4 a three-dimensional state view of the shown structure;

[0027] Figure 6 is a three-dimensional view of the bag mouth hemming device according to an embodiment of the present utility model;

[0028] Figure 7 is another three-dimensional view of the bag mouth hemming device according to an embodiment of the present utility model;

[0029] Figure 8 is a three-dimensional view of the transfer device according to an embodiment of the present utility model;

[0030] Figure 9 is a partial structure view of the bag-opening machine according to an embodiment of the present utility model;

[0031] Figure 10 is a bag-opening cut view according to an embodiment of the present utility model.

[0032] Description of the attached drawing reference numerals: working table surface 10, first through groove 11, pressing and ironing mechanism 20, first lifting drive unit 21, second lifting drive unit 22, pressing and ironing part 23, material pushing part 24, lifting seat 25, hemming mechanism 30, left hemming knife 31, right hemming knife 32, first hemming drive unit 33, front hemming knife 34, rear hemming knife 35, second hemming drive unit 36, bag mouth hemming device 100, transfer device 200, sewing device 300, machine frame 400, laser cutting device 500, chassis 401, rear side frame 402, cover plate 403, hemming and pressing station A, laser bag opening station B, first sewing station C, second sewing station D, adsorption hole 1, needle hole plate 2, stop part 3, lifting cylinder 4, avoidance hole 5, base 6, translation adjustment cylinder 7, tray 201, pressing frame 202, second through groove 203, fourth lifting drive unit 204, first left and right translation drive unit 205, second left and right translation drive unit 205’, adjustment mechanism 206, adjustment cylinder 2061, first connecting rod 2062, second connecting rod 2063, L-shaped piece 2064, obliquely extending part 2065, guiding groove 2011, upper sewing head device 301, lower rotary shuttle device 302, first left and right guide rails 4021, second left and right guide rails 4011, rotary shuttle lifting drive unit 3021, edge a, annular area b. Detailed implementation manners

[0033] Please refer to Figures 1 to 10 as shown, which shows the specific structure of the embodiment of the present utility model.

[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0035] A bag mouth hemming device 100 includes a working table surface 10, a pressing and ironing mechanism 20 and a hemming mechanism 30; a first through groove 11 that penetrates up and down is provided on the working table surface 10; the pressing and ironing mechanism 20 is located above the working table surface 10; the hemming mechanism 30 is located below the working table surface 10. Compared with the way that the hemming mechanism 30 in the traditional technology is arranged above the working table surface 10, the space above the working table surface 10 is effectively saved. Specifically:

[0036] The ironing mechanism 20 includes a first lifting drive unit 21, a second lifting drive unit 22, an ironing part 23 and a material pushing part 24; the first lifting drive unit 21 drives the material pushing part 24 to move up and down relative to the ironing part 23, so that the material pushing part 24 can extend downward and withdraw upward from the first through groove 11; the second lifting drive unit 22 drives the first lifting drive unit 21, the ironing part 23 and the material pushing part 24 to move up and down together. The ironing part 23 is located above the workbench surface 10. During operation, the bottom end of the ironing part 23 presses on the fabric, so that the hemming retention effect is good, the creases are obvious and regular, which is beneficial to improving the quality of subsequent sewing processing; the ironing part 23 is surrounded by a rectangular ring structure, the material pushing part 24 is movably located in the inner through hole of the ring structure up and down, and the bottom surface of the ring structure of the ironing part 23 serves as the ironing surface. During ironing, steam is sprayed onto the hemmed part of the fabric. The ironing surface has a relatively high temperature, and it forms a hot press with the fabric to thermally shape the hemmed part. During the hot press, the bottom of the hemmed part is also pressed upward by the tops of the corresponding left hemming knife, right hemming knife, front hemming knife and rear hemming knife. Therefore, it is equivalent to the hemmed part being clamped and shaped up and down. The ironing mechanism 20 further includes a lifting seat 25. The first lifting drive unit 21 is arranged on the lifting seat 25, the ironing part 23 is arranged on the lifting seat 25, and the second lifting drive unit 22 is connected to the lifting seat 25 to drive the lifting seat 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 lift along the Z-axis. The vertical rack is connected to the lifting seat 25.

[0037] The hemming mechanism 30 includes a first hemming mechanism 30 and a second hemming mechanism 30; the first hemming mechanism 30 includes a left hemming knife 31, a right hemming knife 32 arranged on opposite sides left and right, and a first hemming driving unit 33. The first hemming driving unit 33 drives the left hemming knife 31 and the right hemming knife 32 to move towards each other in the left-right direction to be opposite to the lower part of the first through groove 11, and move away from each other in the opposite direction to fold the left and right side materials of the bag opening of the fabric to the left and right respectively; the second hemming mechanism 30 includes a front hemming knife 34, a rear hemming knife 35 arranged on opposite sides front and rear, and a second hemming driving unit 36. The second hemming driving unit 36 drives the front hemming knife 34 and the rear hemming knife 35 to move towards each other in the front-rear direction to be opposite to the lower part of the first through groove 11, and move away from each other in the opposite direction to fold the front and rear side materials of the bag opening of the fabric to the front and rear respectively. The first hemming driving unit 33 and the second hemming driving unit 36 each include a forward and reverse motor and a lead screw driven by the forward and reverse motor to rotate. Two internally threaded sliders are respectively sleeved on the lead screw in a threaded connection manner; the two internally threaded sliders of the first hemming driving unit 33 are respectively connected to the left hemming knife 31 and the right hemming knife 32, and the two internally threaded sliders of the second hemming driving unit 36 are respectively connected to the front hemming knife 34 and the rear hemming knife 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 and get closer; 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 hemming mechanism 30 further includes a third lifting driving unit 37, and the third lifting driving unit 37 drives the first hemming mechanism 30 and the second hemming mechanism 30 to move up and down together. When moving up to the in-place position, it is opposite to the lower part of the first through groove 11.

[0038] Moreover, a bag opening machine is provided, which includes a bag opening hemming device 100, a transfer device 200, and a sewing device 300. The bag opening hemming device 100 is the bag opening hemming device 100 described above. After the bag opening is hemmed, the fabric is transferred to the sewing station by the transfer device 200, and the sewing device 300 performs sewing processing on the fabric. Usually, at least one layer or multiple layers of fabric are sewn and connected at the hemmed part, and the number of sewing times is one or more.

[0039] Specifically in this embodiment, the bag opening machine includes a frame 400 and a bag mouth hemming device 100, a laser cutting device 500, a transfer device 200, and a sewing device 300 provided on the frame 400. The bag mouth hemming device 100 is the same bag mouth hemming device 100 as described above. In this embodiment, the frame 400 includes a bottom frame 401 and a rear side frame 402. The workbench surface 10 is disposed on the top of the bottom frame 401, and the rear side frame 402 extends upward from a position near the rear side of the top of the bottom frame 401, such that: the rear side frame 402 is located behind the workbench surface 10. A cover plate 403 is provided on the bottom frame 401 and the rear side frame 402 to play a role of covering and protecting.

[0040] A hemming and pressing station A, a laser bag opening station B, a first sewing station C, and a second sewing station D are arranged from left to right on the workbench surface 10. The first sewing station C and the second sewing station D are two stations where the fabric can be placed. A plurality of adsorption holes 1 are provided on the workbench surface 10 corresponding to the first sewing station C and the second sewing station D, facilitating the adsorption and positioning of the fabric after being placed. A needle hole plate 2 is provided on the workbench surface 10 corresponding to the first sewing station C and the second sewing station D. The needle hole plate 2 is detachably installed on the workbench surface 10 (an installation window is reserved on the workbench surface 10). Further, two stop portions 3 with a left-right spacing are provided on the rear sides of the workbench surface 10 corresponding to the first sewing station C and the second sewing station D. The stop portions 3 are controlled to rise and fall by corresponding lifting cylinders 4. The lifting cylinders 4 are disposed below the workbench surface 10, and the upper stop portions protrude above the workbench surface 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 respectively, facilitating the quick alignment and placement of the fabric. An avoidance hole 5 is provided on the workbench surface 10 for the corresponding stop portion 3 to protrude. Usually, the avoidance hole 5 is designed as a long strip extending left and right, enabling the left and right positions of the stop portion 3 to be adjustable, so as to meet the alignment and placement of fabrics of a certain size. For example: the telescopic rod of the lifting cylinder 4 extends upward and is drivingly connected to a 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-right direction and is drivingly connected to the stop portion 3. In this way, the relative position of the stop portion 3 in the left-right direction is automatically adjusted by using the translation adjustment cylinder 7, and the lifting cylinder 4 controls the lifting height of the stop portion 3.

[0041] The transfer device 200 can travel back and forth between the hemming and ironing station A, the laser bag opening station B, the first sewing station C, and the second sewing station D. The transfer device 200 includes a tray 201 and a pressing frame 202; the pressing frame 202 is located above the tray 201, and the pressing frame 202 is connected to a pressing frame displacement driving unit, which drives the pressing frame 202 to translate and move up and down relative to the tray 201; a second through groove 203 that penetrates up and down is provided on the tray 201, the tray 201 is located above the plane where the workbench surface 10 is located, and the tray 201 is connected to a fourth lifting driving unit 204, which drives the transfer device 200 to move up and down relative to the plane where the workbench surface 10 is located; and, the transfer device 200 is further connected to a left and right translation driving unit 205, which drives the transfer device 200 to translate left and right along the plane where the workbench surface 10 is located. The pressing frame displacement driving unit includes a pressing frame front and back displacement driving unit and a pressing frame up and down displacement driving unit; the pressing frame front and back displacement driving unit drives the pressing frame 202 to move back and forth, and the pressing frame up and down displacement driving unit drives the pressing frame front and back displacement driving unit and the pressing frame 202 to move up and down together. Two sets of adjusting mechanisms 206 are provided on the tray 201, and the adjusting mechanism 206 includes an adjusting 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 horizontal piece portion extending left and right and a longitudinal portion extending front and back. An obliquely extending portion 2065 extends outward at the corner of the L-shaped piece 2064; the telescopic rod of the adjusting cylinder 2061 extends forward along the Y-axis direction. The left and right direction is defined as the X-axis direction, the front and back direction is defined as the Y-axis direction, and the up and down direction is defined as the Z-axis direction; 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, and the inner end of the second connecting rod 2063 is hinged to the outer end of the obliquely extending portion 2065. A guiding groove 2011 is provided on the tray 201, so that the obliquely extending portion 2065 is displaced obliquely within the guiding groove 2011. The second through groove 203 is formed by enclosing two L-shaped pieces 2064, and the size of the second through groove 203 is controlled by the adjusting cylinder 2061 (specifically, adjusting the front and back width dimension and the left and right length dimension of the second through groove 203). As Figure 9 shown in, the adjusting cylinder 2061 is located at the rear side position on the tray 201. When the telescopic rod extends forward, the L-shaped piece 2064 is pulled outward. At this time, the size of the second through groove 203 is enlarged; on the contrary, if the telescopic rod retracts backward, the L-shaped piece 2064 is pushed inward, and at this time, the size of the second through groove 203 is reduced.

[0042] The sewing device 300 includes an upper head device 301 and a lower bobbin case device 302 which are separately arranged. The upper head device 301 includes a sewing needle assembly and a first sewing driving unit for driving the sewing needle assembly. The lower bobbin case device 302 includes a bobbin case assembly and a second sewing driving unit for driving the bobbin case assembly. The sewing device 300 can move left and right back and forth between a first sewing station C and a second sewing station D to perform sewing operations 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 driving units. Alternatively, the upper head device 301 and the lower bobbin case device 302 are each controlled for left and right translation by separate drives. For example, the upper head device 301 is driven for left and right translation by a first left and right translation driving unit 205, while the lower bobbin case device 302 is driven for left and right translation by a second left and right translation driving unit 205'. And 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 movement 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 movement of the lower bobbin case device 302. Generally, the lower bobbin case device 302 is connected with a bobbin case lifting driving unit 3021, and the bobbin case lifting driving unit 3021 drives the lower bobbin case device 302 to move up and down. The second left and right translation driving unit 205' drives the lower bobbin case device 302 and the bobbin case lifting driving unit 3021 to move left and right together. In the left and right translation state or when preparing for left and right translation, the lower bobbin case device 302 is in a lowered state. After reaching the corresponding first sewing station C and the second sewing station D, the bobbin case lifting driving unit 3021 drives the lower bobbin case device 302 to rise to a proper position and keep a set distance from the bottom surface of the corresponding needle plate 2 to meet the matching requirements between the sewing needle assembly and the bobbin case assembly.

[0043] The working process of the bag opening machine in this embodiment is introduced as follows:

[0044] Step 1: The fabric to be bagged is loaded on the transfer device 200.

[0045] Step 2: The transfer device 200 is located at the laser bag opening station B, and a cut is formed by the laser cutting device 500. The cut is generally as Figure 10 shown: A straight seam is connected between two opposite V-shaped seams.

[0046] Step 3: The transfer device 200 transfers to the hemming and pressing station A. The pushing part 24 extends into the first through groove 11 to fold the four side edges a of the incision downward. The first hemming mechanism 30 and the second hemming mechanism 30 fold the four side edges a outward along the bottom of the workbench surface 10. The pressing part 23 abuts against the annular area b outside the corresponding four side edges a at the top of the fabric to press and shape the bag mouth hemming part. Usually, the hemming and pressing can be maintained for a certain period according to the setting.

[0047] Step 4: The pressing mechanism 20 resets (upward), and the hemming mechanism 30 resets (for example: the left hemming knife 31, the right hemming knife 32, the front hemming knife 34, and the rear hemming knife 35 reset inward, and the first hemming mechanism 30 and the second hemming mechanism 30 reset downward).

[0048] Step 5: The transfer device 200 moves upward and then translates rightward to the first sewing station C (before the transfer device 200 reaches the first sewing station C, the first fitting has been placed at the first sewing station C); the upper sewing head device 301 and the lower rotary hook device 302 translate leftward to the first sewing station C (or the upper sewing head device 301 and the lower rotary hook device 302 have already been waiting at the first sewing station C).

[0049] Step 6: The transfer device 200 moves downward, the tray 201 presses on the first fitting, and the sewing device 300 performs the first sewing process to sew and connect the fabric and the first fitting.

[0050] Step 7: The transfer device 200 moves upward and then translates rightward to the second sewing station D (before the transfer device 200 reaches the second sewing station D, the second fitting has been placed at the second sewing station D); the upper sewing head device 301 and the lower rotary hook device 302 translate rightward to the second sewing station D (or the upper sewing head device 301 and the lower rotary hook device 302 are waiting at the second sewing station D in advance).

[0051] Step 8: The transfer device 200 moves downward, the tray 201 presses on the second fitting, and the sewing device 300 performs the second sewing process to sew and connect the second fitting and the fabric.

[0052] For the case where more sewing processes are still required, a third accessory can be continuously placed at the first sewing station C. The transfer device 200 moves upward and then translates leftward to the first sewing station C. The upper sewing head device 301 and the lower rotating shuttle device 302 translate leftward to the first sewing station C. The transfer device 200 moves downward, and the tray 201 presses on the third accessory. The sewing device 300 performs the third sewing process to sew and connect the third accessory and the fabric. Even further, a fourth accessory can be placed at the second sewing station D... In this way, by repeatedly using the first sewing station C and the second sewing station D, the sewing device 300 reciprocates left and right to perform sewing operations at the first sewing station C and the second sewing station D respectively.

[0053] From Figure 1 It can be seen that the arrangements of the hemming and pressing station A, the laser bag-opening station B, the first sewing station C, and the second sewing station D are relatively compact. In particular, the hemming and pressing station A and the laser bag-opening station B are adjacent to each other. Since the laser bag-opening station B serves as the loading and unloading station and the hemming mechanism 30 is arranged below the workbench surface 10, the space of the hemming and pressing station A can be utilized. Combining steps 1, 2, and 3, in this embodiment, when loading the fabric to be bag-opened at the laser bag-opening station B and performing laser cutting, the laser cutting device 500 does not translate. By virtue of the left-right translation and front-back translation of the transfer device 200, the laser cutting device 500 is enabled to cut a notch on the fabric. When performing the left-right translation action, the transfer device 200 translates leftward to the hemming and pressing station A. That is to say, while performing the laser cutting process, the transfer device 200 gradually translates leftward to the hemming and pressing station A. On the one hand, it cleverly utilizes the adjacent space of the laser bag-opening station B and the hemming and pressing station A as the space required for the translation action of the transfer device 200 during laser cutting. On the other hand, it saves the time required for specially translating to the hemming and pressing station A after laser cutting. For the bag-opening machine of this embodiment, by arranging the hemming and pressing station A, the laser bag-opening station B, the first sewing station C, and the second sewing station D from left to right on the workbench surface 10, and by arranging a specially structured bag mouth hemming device 100, a laser cutting device 500, a transfer device 200, and a sewing device 300 on the machine frame, the integrated operation efficiency of bag-opening, hemming, and sewing is effectively improved. Moreover, the overall front-back width of the bag-opening machine becomes smaller. During actual use, two bag-opening machines can be placed back-to-back adjacent to each other. In this way, the space occupied by a traditional bag-opening machine can be used to place two bag-opening machines after innovative design, which is beneficial for workshop storage management and convenient for the staff to control the bag-opening machine.

[0054] When the bag-opening machine is actually used, according to the processing requirements of different products, it may only need to perform sewing processing once, that is, only one sewing station is used. Therefore, the innovatively designed bag-opening machine can meet the sewing processing requirements of bag-opening products for single or multiple sewing processes.

[0055] The key point of the design of the present utility model is that the pressing and ironing mechanism 20 is ingeniously arranged above the workbench surface 10, and the hemming mechanism 30 is arranged below the workbench surface 10, so as to perform hemming operations below the workbench surface 10, effectively saving the space above the workbench surface 10, making the equipment structure more compact, and being able to press and shape the bag mouth hemming part during hemming, so that the hemming has a good holding effect, the creases are obvious and regular, which is beneficial to improving the quality of subsequent sewing processing.

[0056] The above is only a preferred embodiment of the present utility model, and does not impose any limitation on the technical scope of the present utility model. Therefore, any minor modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A bag folding device, characterized in that: Included are: A work surface; the work surface is provided with a first through groove which runs vertically; The pressing mechanism is located above the work surface; the pressing mechanism comprises a first lifting drive unit, a second lifting drive unit, a pressing part and a material pushing part; the first lifting drive unit drives the material pushing part to move up and down relative to the pressing part, so that the material pushing part can extend downward into and upward out of the first through slot; The second lifting drive unit drives the first lifting drive unit, the pressing part and the material pushing part to move up and down together; Folding mechanism; the folding mechanism is located below the work surface.

2. A bag opening folding device according to claim 1, characterized in that: The folding mechanism includes a first folding mechanism and a second folding mechanism; the first folding mechanism includes a left folding knife, a right folding knife and a first folding drive unit arranged on opposite sides, and the first folding drive unit drives the left folding knife and the right folding knife to move toward each other and move away from each other in the left and right directions; the second folding mechanism includes a front folding knife, a rear folding knife and a second folding drive unit arranged on opposite sides, and the second folding drive unit drives the front folding knife and the rear folding knife to move toward each other and move away from each other in the front and back directions.

3. A bag opening folding device according to claim 2, characterized in that: The first folding drive unit and the second folding drive unit both include a forward and reverse motor and a screw driven to rotate by the forward and reverse motor, and two internally threaded sliders are respectively threadedly sleeved on the screw; the two internally threaded sliders of the first folding drive unit are respectively connected to the left folding knife and the right folding knife, and the two internally threaded sliders of the second folding drive unit are respectively connected to the front folding knife and the rear folding knife; when the forward and reverse motor drives the screw to rotate forward, the two internally threaded sliders on the screw are displaced toward each other along the screw; when the forward and reverse motor drives the screw to reverse, the two internally threaded sliders on the screw are displaced away from each other along the screw.

4. A bag opening folding device according to claim 2 or 3, characterized in that: The folding mechanism further includes a third lifting drive unit, and the third lifting drive unit drives the first folding mechanism and the second folding mechanism to move up and down together.

5. A bag opening folding device according to claim 1, characterized in that: The pressing part is surrounded by an annular structure, the pushing part can be movably located in the internal through hole of the annular structure, and the bottom surface of the annular structure of the pressing part serves as the pressing surface.

6. A bag opening folding device according to claim 1 or 5, characterized in that: The pressing mechanism also includes a lifting seat, the first lifting drive unit is arranged on the lifting seat, the pressing part is arranged on the lifting seat, and the second lifting drive unit is connected to the lifting seat to drive the lifting seat to move up and down.

7. A bag opening machine, comprising a bag opening folding device, a transfer device and a sewing device, characterized in that: The bag mouth folding device is a bag mouth folding device as described in any one of claims 1 to 6.

8. The bag opening machine according to claim 7, characterized in that: 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 drive unit, and the pressure frame displacement drive unit drives the pressure frame to translate and move up and down relative to the tray; a second through groove that runs through the tray from top to bottom is provided on the tray, and the tray is located above the plane where the work table is located, and the tray is connected to a fourth lifting drive unit, and the fourth lifting drive unit drives the transfer device to move up and down relative to the plane where the work table is located; and the transfer device is also connected to a left and right translation drive unit, and the left and right translation drive unit drives the transfer device to translate left and right along the plane where the work table is located.

9. The bag opening machine according to claim 8, characterized in that: The press frame displacement driving unit includes a press frame front-to-back displacement driving unit and a press frame up-and-down displacement driving unit; the press frame front-to-back displacement driving unit drives the press frame to move forward and backward, and the press frame up-and-down displacement driving unit drives the press frame front-to-back displacement driving unit and the press frame to move up and down together.

10. The bag opening machine according to claim 8, characterized in that: Two groups of adjustment mechanisms are arranged on the pallet, and the adjustment mechanisms include an adjustment cylinder, a first connecting rod, a second connecting rod and an L-shaped piece, and an oblique extension portion extends outward from the corner of the L-shaped piece; the telescopic rod of the adjustment cylinder is extended forward along the Y-axis, and 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 portion, and the second through groove is formed by the two L-shaped pieces, and the size of the second through groove is controlled by the adjustment cylinder.

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