A bag opening machine and a processing technology for bag mouth sewing

Abstract

The present application relates to a kind of bag opening machine and bag mouth sewing processing technology, bag opening machine sets workbench, workbench sets sewing device, laser cutting device, and bag mouth forming device and accessory bearing device;Bag mouth forming device includes folding mechanism and fixed material mechanism, folding mechanism is set to fixed material mechanism above, bag mouth forming device can move on workbench;Bag mouth sewing processing technology, bag opening cloth piece is positioned on bag mouth forming device, is sequentially cut, folded, accessory, sewing and unloading etc.Step.In the present application, folding mechanism and fixed material mechanism are integrated into one, compared with prior art, bag brow, bag cloth or zipper etc.Accessory is not easy to deviate, shift in processing process, and product quality stability is higher.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of garment processing machinery, in particular to a bag opening machine and a bag opening sewing processing technology. BACKGROUND

[0002] In the prior art, bag opening machines have been widely used. A bag opening machine for garment bag opening processing is disclosed in Chinese patent application publication No. CN111575926A. The technical solution discloses that a material positioning device, a laser cutting device, a bag folding device, and a sewing device are arranged on the workbench of the bag opening machine. The bag folding device is fixedly arranged above the accessory feeding position of the bag brow, bag cloth, or zipper. The material positioning device reciprocally slides between the bag folding device, the laser cutting device, and the sewing device. The processing process of the bag opening includes: positioning the bag opening position of the garment by the material positioning device, then cutting by the laser cutting device, moving above the accessory after cutting, and folding by the bag folding device, then stacking the garment on the accessory, and finally moving to the sewing station for sewing. However, the technical solution cannot realize continuous processing and has high manual participation.

[0003] Chinese utility model patent No. CN214244833U discloses a continuous production garment bag opening machine. Based on the technical solution of publication No. CN111575926A, a lower supporting plate is arranged below the bag folding device for placing the bag brow, bag cloth, or zipper accessory. An upper plate mechanism capable of clamping the lower supporting plate and moving it with the material positioning device to the sewing device is arranged on the material positioning device. A lower supporting plate resetting device is arranged on the workbench. The lower supporting plate resetting device can transfer the lower supporting plate on the upper plate mechanism to the lower side of the bag folding device. Continuous processing is realized.

[0004] However, after the bag opening is folded, the bag opening and the accessory need to be set with a shaping press block to maintain the fit. Since the bag folding device is fixedly arranged above the accessory feeding position, the bag opening needs to be transported to the bag folding mechanism for folding after cutting. These factors will cause the bag brow, bag cloth, or zipper accessory to deviate or shift during the processing, thereby affecting the stability of product quality. SUMMARY

[0005] The purpose of the present application is to provide a bag opening machine and a bag opening sewing processing technology, which solves the defect that the bag brow, bag cloth, and zipper accessory deviate or shift during processing, thereby affecting the stability of product quality.

[0006] To achieve the above purpose, the technical solution of the present application is as follows:

[0007] A bag opening machine is provided with a workbench, a sewing device, and a laser cutting device. The workbench is also provided with a bag opening forming device and an accessory carrying device.

[0008] The bag mouth forming device comprises a base, a folding mechanism and a material positioning mechanism arranged on the base, and the folding mechanism is located above the material positioning mechanism;

[0009] A first driving mechanism for driving the bag mouth forming device to move on the workbench is arranged, and the base is connected with the first driving mechanism;

[0010] The base is provided with a Z-axis direction connecting plate, and the material positioning mechanism is connected with the base through the connecting plate;

[0011] The material positioning mechanism comprises an outer pressing frame and a small pressing frame arranged on the connecting plate and capable of being lifted together, the small pressing frame is located above the outer pressing frame, and the outer pressing frame and the small pressing frame are provided with a bag mouth processing window in correspondence; The outer pressing frame is further provided with a folding edge pressing piece, the outer pressing frame is provided with an opening driving part connected with the folding edge pressing piece, and the folding edge pressing piece is provided with a sewing window matched with the bag mouth processing window;

[0012] The accessory carrying device comprises a carrying plate, a material placing plate for placing the accessories, and a clamping mechanism for taking and placing the material placing plate;

[0013] A second driving mechanism for driving the accessory carrying device to take and place the material placing plate is further arranged, and the carrying plate is connected with the second driving mechanism.

[0014] The base is provided with a Y-axis sliding rail and a third driving mechanism, the folding mechanism is provided with a mounting seat, the mounting seat is connected with the Y-axis sliding rail and slides along the Y-axis direction under the driving of the third driving mechanism;

[0015] The folding mechanism further comprises a knife inserting seat, a knife inserting group, a knife inserting sliding rail group and a knife inserting driving mechanism, the knife inserting group is composed of two X-axis knives and two Y-axis knives arranged in a rectangular shape, the knife inserting sliding rail group is composed of an X-axis knife sliding rail and a Y-axis knife sliding rail, and the knife inserting driving mechanism comprises an X-axis driving unit for driving the two X-axis knives to open or reset along the X-axis knife sliding rail, and a Y-axis driving unit for driving the two Y-axis knives to open or reset along the Y-axis knife sliding rail;

[0016] The mounting seat is further provided with a Z-axis direction lifting sliding rail and a fourth driving mechanism, the knife inserting seat is connected with the lifting sliding rail and lifts along the Z-axis direction on the mounting seat under the driving of the fourth driving mechanism.

[0017] The third driving mechanism and the fourth driving mechanism are both air cylinders, and the X-axis driving unit and the Y-axis driving unit are both air cylinders.

[0018] The folding edge pressing piece is provided with a fixed part and an opening part, the fixed part is fixedly connected with the bottom of the outer pressing frame, and the opening part is connected with the opening driving part arranged at the outer pressing frame.

[0019] The carrying plate is provided with a Y-axis direction guide rail, and the clamping mechanism is slidably connected to the carrying plate through the Y-axis direction guide rail;

[0020] The support plate comprises a support plate body, a positioning pin hole and a clamping receiving member cooperating with the clamping mechanism.

[0021] The support plate is provided with a positioning pin hole, and the connecting plate is provided with a positioning pin which can be inserted into the positioning pin hole and move together with the support plate.

[0022] The first driving mechanism comprises a servo motor and a screw rod, the screw rod is connected with the base, and the servo motor drives the base through the screw rod so as to drive the bag mouth forming device to move on the workbench surface.

[0023] The workbench surface is further provided with an accessory positioning component for positioning the accessory.

[0024] A processing technology of bag mouth sewing, the technology is implemented by using the bag opening machine as claimed in claim 1, the workbench surface is provided with a bag opening cloth piece feeding station, a cutting station, a sewing station and an accessory feeding station, the cutting station is provided with a laser cutting device, and the sewing station is provided with a sewing device;

[0025] The processing technology comprises the following steps:

[0026] Step one, the bag mouth forming device is placed on the outer pressure frame of the material positioning mechanism at the bag opening cloth piece feeding station, the small pressure frame is lowered to press on the bag opening cloth piece to position the bag opening cloth piece; the first driving mechanism drives the bag mouth forming device to move to the cutting station, and the laser cutting device cuts the bag mouth;

[0027] Step two, the support plate is placed at the accessory feeding station, and the accessory is placed on the support plate; the first driving mechanism drives the bag mouth forming device to move to the accessory feeding station, and in the moving process, the folding mechanism folds the cut bag mouth; in the folding process of the cut bag mouth, the outer pressure frame opening driving part drives the edge pressing piece to move downward, the edge pressing piece is opened from the bottom of the outer pressure frame, and after the folding mechanism completes the folding of the bag mouth, the opening driving part drives the edge pressing piece to reset, and the bag mouth edge is pressed tightly at the bottom of the outer pressure frame;

[0028] Step three, the bag mouth forming device moves above the support plate at the accessory feeding station and is lowered to make the folded bag mouth overlap with the accessory, the first driving mechanism drives the bag mouth forming device and the support plate to move to the sewing device at the sewing station to sew the bag mouth and the accessory;

[0029] Step four, the first driving mechanism drives the bag mouth forming device and the support plate to move to the bag opening cloth piece feeding station, releases the support plate, the clamping mechanism clamps the support plate and moves the support plate to the accessory feeding station under the driving of the second driving mechanism; and the sewn bag opening cloth piece is taken away.

[0030] In step three, when the bag opening is sewn with the accessory, the material supporting plate of the accessory feeding station places another accessory; the cut bag cloth after sewing moves with the bag opening forming device and the material supporting plate to the cut bag cloth feeding station, the material supporting plate is released, the bag opening forming device moves above the material supporting plate of the accessory feeding station and is lowered to make the cut bag cloth after sewing superimposed with another accessory, the first driving mechanism drives the bag opening forming device and the material supporting plate to move to the sewing device of the sewing station, and the cut bag cloth is sewn with another accessory.

[0031] The advantages of the present application are: 1. The folding mechanism and the material positioning mechanism are integrated together, which can immediately fold after the cut bag cloth is cut, avoiding the deviation and displacement of the cut bag cloth during the conveying process; 2. The edge folding and pressing plate of the material positioning mechanism has a fixing effect on the bag opening edge after the folding process, which further prevents the deformation and displacement of the bag opening; 3. The material positioning mechanism ensures the stability of the position of the bag cloth, bag brow or zipper and other accessories during the conveying process by the positioning pin pressing the material supporting plate, and deviation does not occur; 4. The folding mechanism and the material positioning mechanism are integrated together, which can shorten the length of the workbench and the moving distance of the cut bag cloth, not only improving the processing speed and efficiency, but also shortening the size of the bag opening machine and saving the site; 5. The bag opening machine of the present application can be used for making false pockets for clothing and making true pockets for clothing. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a structure schematic diagram of the bag opening machine of the present application at the cut bag cloth feeding position.

[0033] Figure 2 is a structure schematic diagram of the bag opening machine of the present application at the cut bag cloth cutting position or the cut bag cloth sewing position.

[0034] Figure 3 is a structure schematic diagram of the bag opening machine of the present application at the accessory feeding position.

[0035] Figure 4 is a structure schematic diagram of the bag opening forming device of the present application.

[0036] Figure 5 is a structure schematic diagram of the folding mechanism of the present application.

[0037] Figure 6 is a structure schematic diagram of the material positioning mechanism of the present application.

[0038] Figure 7 is a structure schematic diagram of the edge folding and pressing plate of the material positioning mechanism of the present application.

[0039] Figure 8 is a structure schematic diagram of the edge folding and pressing plate of the material positioning mechanism of the present application.

[0040] Figure 9 is a structure schematic diagram of the accessory bearing device of the present application.

[0041] Figure 10 Figure is a schematic diagram of the material supporting plate structure of the present application.

[0042] In the figure: A-sewing device; B-cutting device; C-bag mouth forming device; D-attachment carrying device; F-attachment positioning component; 1-base; 11-Y-axis sliding rail; 12-third driving mechanism; 2-folding mechanism; 21-mounting seat; 22-knife holder; 23-X-axis knife; 24-Y-axis knife; 3-material positioning mechanism; 31-connection plate; 32-small pressing frame; 33-outer pressing frame; 34-processing window; 35-positioning pin; 36-flange pressing sheet; 361-fixed part; 362-opening part; 363-sewing window; 37-opening driving part; 41-carrying plate; 42-material supporting plate; 421-body; 422-positioning pin hole; 423-clamping receptor; 43-clamping mechanism; 44-Y-axis direction guide rail; 51-servo motor; 52-screw rod. DETAILED DESCRIPTION

[0043] The present application will be further described below in conjunction with the accompanying drawings. The drawings are only used for illustrative description and cannot be understood as limiting the patent.

[0044] In order to more simply illustrate the embodiments, some parts which are well known to those skilled in the art but are not related to the main content of the present creation will be omitted in the drawings or description. In addition, some parts will be omitted, enlarged or reduced in the drawings for the convenience of description, but do not represent the size or the whole structure of the actual product.

[0045] As shown in Figures 1-3 , the bag opening machine of the present application is provided with a workbench, which is provided with a bag opening cloth feeding station, a cutting station, a sewing station and an accessory feeding station for accessories such as bag flaps, bag cloth or zippers, the sewing station is provided with a sewing device A, and the cutting station is provided with a laser cutting device B; further comprising a bag mouth forming device C and an accessory carrying device D;

[0046] As shown in Figure 4 , the bag mouth forming device C comprises a base 1, a folding mechanism 2 and a material positioning mechanism 3 arranged on the base 1, and the folding mechanism 2 is located above the material positioning mechanism 3;

[0047] A first driving mechanism is arranged to drive the bag mouth forming device C to move on the workbench, and the base 1 is connected with the first driving mechanism; preferably, the first driving mechanism comprises a servo motor 51 and a screw rod 52, the screw rod 52 is connected with the base 1, and the servo motor 51 drives the base 1 to move on the workbench through the screw rod 52, thereby driving the bag mouth forming device C to move on the workbench.

[0048] As shown in Figure 4 , Figure 6As shown, the base 1 is provided with a Z-axis connecting plate 31, and the material fixing mechanism 3 is connected to the base 1 through the connecting plate 31;

[0049] The material fixing mechanism 3 includes an outer pressure frame 33 and a small pressure frame 32, which are disposed on the connecting plate 31 and can be raised and lowered. The small pressure frame 32 is located above the outer pressure frame 33. The outer pressure frame 33 is used to place the bag opening fabric piece to be processed. The small pressure frame 32 descends and presses on the upper surface of the bag opening fabric piece to fix the bag opening fabric piece.

[0050] The outer pressure frame 33 and the small pressure frame 32 are respectively provided with bag opening processing windows 34; such as Figure 7 , Figure 8 As shown, the bottom of the outer pressure frame 33 is also provided with a folding edge pressing plate 36. The outer pressure frame 33 is provided with an opening drive part 37 connected to the folding edge pressing plate 36. The folding edge pressing plate 36 is provided with a sewing window 363 that cooperates with the bag opening processing window 34. The sewing window 363 is located below the processing window 34 and is connected to it. The connected part is the sewing part of the bag opening fabric piece.

[0051] The folded edge pressing sheet 36 can have various designs, such as Figure 7 , Figure 8 The diagram shows two design options, but it does not mean that the structure of the folded edge pressing sheet 36 of the present invention is limited to these two options.

[0052] A design scheme such as Figure 7 As shown, the hem pressing sheet 36 has a fixing part 361 on the outside of the sewing window 363, an opening part 362 on the inside of the sewing window 363, and an opening driving part 37 on the inside of the outer pressing frame 33. The fixing part 361 is fixedly connected to the bottom outer side of the outer pressing frame 33, and the two inner corners of the opening part 362 are connected to two opening driving parts 37 on the inside of the outer pressing frame 33. The opening part 362 can separate (open) from the bottom of the outer pressing frame 33 under the drive of the opening driving parts 37.

[0053] Another design scheme is as follows Figure 8 As shown, the opening portion 362 can also be configured as two clamping arms extending from both sides of the sewing window 363 toward the inner side of the outer pressure frame 33. The top ends of the two clamping arms are respectively connected to an opening drive portion 37. Under the drive of the opening drive portion 37, the clamping arms separate (open) from the bottom of the outer pressure frame 33. Preferably, the opening drive portion 37 is a cylinder.

[0054] like Figure 9 As shown, the accessory carrying device D includes a carrying plate 41, a material support plate 42 for placing accessories such as bag flaps, bag fabrics or zippers, and a clamping mechanism 43 for taking and placing the material support plate 42.

[0055] The second driving mechanism is arranged to drive the clamping mechanism 43 to place the supporting plate 42 on the accessory feeding station and to move the supporting plate 42 released on the bag opening feeding station to the accessory feeding station, so as to realize the circulation of the supporting plate 42 on the workbench.

[0056] As shown in Figure 4 , the base 1 is provided with a Y-axis sliding rail 11 and a third driving mechanism 12, and the folding mechanism 2 is provided with a mounting seat 21 connected with the Y-axis sliding rail 11 and sliding along the Y-axis direction under the driving of the third driving mechanism 12.

[0057] The folding mechanism 2 is driven by the third driving mechanism 12 to above the material positioning mechanism 3 in the bag opening folding process to fold the cut bag opening. Normally, the third driving mechanism 12 drives the mounting seat 21 to retreat, and drives the folding mechanism 2 to move backward from above the material positioning mechanism 3, so as to leave a space above the material positioning mechanism 3.

[0058] As shown in Figure 5 , the folding mechanism 2 further comprises a knife inserting seat 22, a knife inserting group, a knife inserting sliding rail group and a knife inserting driving mechanism. The knife inserting group is composed of two X-axis knives 23 and two Y-axis knives 24 arranged in a rectangular shape. The knife inserting sliding rail group is composed of X-axis knife sliding rails and Y-axis knife sliding rails. The knife inserting driving mechanism comprises an X-axis driving unit driving the two X-axis knives 23 to open or reset along the X-axis knife sliding rails, and a Y-axis driving unit driving the two Y-axis knives 24 to open or reset along the Y-axis knife sliding rails.

[0059] The mounting seat 21 is further provided with a Z-axis lifting sliding rail and a fourth driving mechanism. The knife inserting seat 22 is connected with the lifting sliding rail and lifts along the Z-axis direction on the mounting seat 21 under the driving of the fourth driving mechanism.

[0060] When the material positioning mechanism 3 sends the bag opening cloth to the cutting station and the cutting is completed, the first driving mechanism drives the bag opening forming device C to move to the accessory feeding station. During the movement, the folding mechanism 2 slides to above the material positioning mechanism 3 along the Y-axis sliding rail 11 under the driving of the third driving mechanism 12. The fourth driving mechanism drives the knife inserting group to insert into the processing window 34 of the material positioning mechanism 3. The two Y-axis knives 24 open along the Y-axis direction, and the two X-axis knives 23 open along the X-axis direction to fold the cut bag opening.

[0061] Preferably, the third driving mechanism and the fourth driving mechanism are both air cylinders, and the X-axis driving unit and the Y-axis driving unit are both air cylinders.

[0062] As shown in Figure 9 , the carrying plate 41 of the accessory carrying device D is provided with a Y-axis direction guide rail 44, and the clamping mechanism 43 is slidingly connected to the carrying plate 41 through the Y-axis direction guide rail 44.

[0063] As shown in Figure 10 , the material supporting plate 42 comprises a material supporting plate body 421, a positioning pin hole 422 and a clamping receiving member 423 cooperating with the clamping mechanism. As shown in Figure 6 , the connecting plate 31 is provided with a positioning pin 35, which can be inserted into the positioning pin hole 422 and carry the material supporting plate 42 to move with the material positioning mechanism 3 when the material positioning mechanism 3 moves above the material supporting plate 42.

[0064] As shown in Figures 1-3 , at the accessory loading station of the workbench surface, an accessory positioning component F for positioning the bag flange, bag cloth or zipper is also provided. The accessory positioning component F extends above the material supporting plate 42 when the material supporting plate 42 places the accessory, and is reset after the accessory is placed.

[0065] A processing technology for bag opening sewing, which is implemented by the aforementioned bag opening machine. The workbench surface is provided with a bag opening cloth loading station, a cutting station, a sewing station and an accessory loading station. The cutting station is provided with a laser cutting device B, and the sewing station is provided with a sewing device A.

[0066] The processing technology comprises the following steps:

[0067] Step one, the bag opening forming device C is moved to the cutting station as shown in Figure 1 , and the laser cutting device B performs bag opening cutting. Figure 2

[0068] Step two, the material supporting plate 42 is placed at the accessory loading station as shown in Figure 3 , and the bag flange, bag cloth or zipper is placed on the material supporting plate 42. The first driving mechanism drives the bag opening forming device C to move to the accessory loading station. During the movement, the folding mechanism 2 is driven by the third driving mechanism 12 to slide along the Y-axis sliding rail 11 above the material positioning mechanism 3. The fourth driving mechanism drives the knife group to insert into the processing window 34 of the material positioning mechanism 3, and the two Y-axis knives 24 are opened along the Y-axis direction, and the two X-axis knives 23 are opened along the X-axis direction, so as to fold the cut bag opening.

[0069] ​During the folding process of cutting the bag opening, the outer pressure frame 33 opening drive unit 37 drives the folding edge pressing plate 36 to move downward. The folding edge pressing plate 36 opens from the bottom of the outer pressure frame 33. After the folding mechanism 2 completes the bag opening folding process, the opening drive unit 37 drives the folding edge pressing plate 36 to reset, pressing the bag opening folded edge tightly against the bottom of the outer pressure frame 33. Specifically, the outer pressure frame 33 opening drive unit 37 drives the opening part 362 of the folding edge pressing plate 36 to move downward, separating from the bottom of the outer pressure frame 33, so that the folded edge of the bag opening enters the gap between the folding edge pressing plate 36 and the outer pressure frame 33. After the folding mechanism 2 completes the folding process, the opening drive unit 37 drives the opening part 362 to reset, pressing the bag opening folded edge stably and without displacement against the bottom of the outer pressure frame 33.

[0070] Step 3, the bag opening forming device C moves to the position shown in the image. Figure 3 The attachment feeding station shown above the material support plate 42 lowers so that the folded bag opening overlaps with the attachment. The positioning pin 35 is inserted into the positioning pin hole 422, and the bag opening forming device C moves together with the material support plate 42 to the position shown above. Figure 2 At the sewing device A of the sewing station shown, the pocket fabric piece is sewn to the accessory through the through part of the processing window 34 and the sewing window 363.

[0071] Step four, after sewing is completed, the bag opening forming device C, along with the material support plate 42, moves to the position as follows: Figure 1 At the fabric loading station shown, the positioning pin 35 disengages from the positioning pin hole 422, releasing the material support plate 42. The clamping mechanism 43 clamps the material support plate 42 and, driven by the second drive mechanism, transfers the released material support plate 42 to the accessory loading station. The sewn fabric piece is removed, another fabric piece to be processed is placed, and another processing cycle begins.

[0072] The attached diagram illustrates the entire process of sewing the bag opening, starting from... Figure 1 Status (open bag fabric feeding) to Figure 2 Status (cut) to Figure 3 Status (open bag fabric piece and accessories folded together) to Figure 2 Status (open pocket fabric piece and accessories sewn together) to Figure 1 Status (The processed bagged fabric piece has been removed).

[0073] However, the above processing technology produces a fake bag. If a real bag is to be made, an additional sewing is required after the first sewing is completed (before step four). That is, when the bag opening fabric piece is sewn to the accessory, another material support plate 42 is placed at the accessory feeding station, and another accessory (bag fabric) is placed on the material support plate 42.

[0074] After the first sewing of the opening fabric piece and accessories, the first drive mechanism drives the bag opening forming device C and the material support plate 42 to move together to the position shown in the image. Figure 1The shown bag opening cloth loading station releases the first block of material supporting plate 42, and the bag mouth forming device C continues to move above the other block of material supporting plate 42 of the accessory loading station, and then the bag opening cloth after sewing is overlapped with the other accessory (bag cloth), then the bag mouth forming device C and the other block of material supporting plate 42 move together to the sewing device A of the sewing station, and the second sewing is carried out, and after the sewing is completed, the step four is carried out to take down the finished product. At this time, the finished product is a real bag.

[0075] The bag opening machine of the present application can process false pockets and real pockets for clothes according to the needs of customers.

[0076] The above only describes the preferred embodiments of the present application, and is not intended to limit the scope of the present application. Any equivalent changes and modifications made according to the content of the present application should be within the technical scope of the present application.

Claims

1. A bag opening machine, a workbench is arranged, the workbench is provided with a sewing device (A) and a laser cutting device (B); characterized in that: The bag mouth forming device (C) and the accessory carrying device (D) are also included. The bag mouth forming device (C) comprises a base (1), a folding mechanism (2) and a material positioning mechanism (3) arranged on the base (1), and the folding mechanism (2) is located above the material positioning mechanism (3); A first driving mechanism for driving the bag mouth forming device (C) to move on the workbench is arranged, and the base (1) is connected with the first driving mechanism; The base (1) is provided with a Z-axis direction connecting plate (31), and the material positioning mechanism (3) is connected with the base (1) through the connecting plate (31); The material positioning mechanism (3) comprises an outer pressing frame (33) and a small pressing frame (32) arranged on the connecting plate (31) and capable of lifting together, the small pressing frame (32) is located above the outer pressing frame (33), and the outer pressing frame (33) and the small pressing frame (32) are provided with a bag mouth processing window (34) correspondingly; the outer pressing frame (33) is further provided with a folding edge pressing piece (36) at the bottom, the outer pressing frame (33) is provided with an opening driving part (37) connected with the folding edge pressing piece (36), and the folding edge pressing piece (36) is provided with a sewing window (363) matched with the bag mouth processing window (34); The accessory carrying device (D) comprises a carrying plate (41), a material supporting plate (42) for placing accessories, and a clamping mechanism (43) for taking and placing the material supporting plate (42); A second driving mechanism for driving the accessory carrying device (D) to take and place the material supporting plate (42) is further arranged, and the carrying plate (41) is connected with the second driving mechanism; The base (1) is provided with a Y-axis sliding rail (11) and a third driving mechanism (12), the folding mechanism (2) is provided with a mounting seat (21), the mounting seat (21) is connected with the Y-axis sliding rail (11) and slides along the Y-axis direction under the driving of the third driving mechanism (12); The folding mechanism (2) further comprises a knife inserting seat (22), a knife inserting group, a knife inserting sliding rail group and a knife inserting driving mechanism, the knife inserting group is composed of two X-axis knives (23) and two Y-axis knives (24) arranged in a rectangular shape, the knife inserting sliding rail group is composed of an X-axis knife sliding rail and a Y-axis knife sliding rail, and the knife inserting driving mechanism comprises an X-axis driving unit for driving the two X-axis knives (23) to open or reset along the X-axis knife sliding rail, and a Y-axis driving unit for driving the two Y-axis knives (24) to open or reset along the Y-axis knife sliding rail; The mounting seat (21) is further provided with a Z-axis direction lifting sliding rail and a fourth driving mechanism, and the knife inserting seat (22) is connected with the lifting sliding rail and lifts along the Z-axis direction on the mounting seat (21) under the driving of the fourth driving mechanism.

2. The bag opener of claim 1, wherein: The third driving mechanism and the fourth driving mechanism are both air cylinders, and the X-axis driving unit and the Y-axis driving unit are both air cylinders.

3. The bag opener of any one of claims 1 to 2, characterized in that: The folding edge pressing piece (36) is provided with a fixed part (361) and an opening part (362), the fixed part (361) is fixedly connected with the bottom of the outer pressing frame (33), and the opening part (362) is connected with the opening driving part (37) arranged at the outer pressing frame (33).

4. The bag opener of any one of claims 1 to 2, characterized in that: The carrying plate (41) is provided with a Y-axis direction guide rail (44), and the clamping mechanism (43) is slidably connected to the carrying plate (41) through the Y-axis direction guide rail (44); The material supporting plate (42) comprises a material supporting plate body (421), a positioning pin hole (422) and a clamping receiving part (423) matched with the clamping mechanism.

5. The bag opener of claim 4, wherein: The supporting plate (42) is provided with a positioning pin hole (422), and the connecting plate (31) is provided with a positioning pin (35) which can be inserted into the positioning pin hole (422) and carries the supporting plate (42) to move together.

6. The bag opener of claim 1, wherein: The first driving mechanism comprises a servo motor (51) and a screw rod (52), the screw rod (52) is connected with the base (1), and the servo motor (51) drives the base (1) through the screw rod (52) so as to drive the bag mouth forming device (C) to move on the workbench surface.

7. The bag opener of claim 1, wherein: The workbench surface is further provided with an accessory positioning component (F) for positioning the accessory.

8. A process for bag mouth seaming, characterized by: The process is implemented by using the bag opening machine as claimed in claim 1, the workbench surface is provided with a bag opening cloth piece feeding station, a cutting station, a sewing station and an accessory feeding station, the cutting station is provided with a laser cutting device (B), and the sewing station is provided with a sewing device (A); The process comprises the following steps: Step one, the bag mouth forming device (C) is placed on the outer pressing frame (33) of the material positioning mechanism (3) at the bag opening cloth piece feeding station, the small pressing frame (32) is lowered to press on the bag opening cloth piece to position the bag opening cloth piece; the first driving mechanism drives the bag mouth forming device (C) to move to the cutting station, and the laser cutting device (B) cuts the bag mouth; Step two, the supporting plate (42) is placed at the accessory feeding station, and the accessory is placed on the supporting plate (42); the first driving mechanism drives the bag mouth forming device (C) to move to the accessory feeding station, and in the moving process, the folding mechanism (2) folds the cut bag mouth; In the folding process of the cut bag mouth, the outer pressing frame (33) opens the driving part (37) to drive the folding edge pressing piece (36) to move downward, the folding edge pressing piece (36) is opened from the bottom of the outer pressing frame (33), and after the folding mechanism (2) completes the folding of the bag mouth, the opening driving part (37) drives the folding edge pressing piece (36) to reset, and the bag mouth folding edge is pressed tightly on the bottom of the outer pressing frame (33); Step three, the bag mouth forming device (C) moves above the supporting plate (42) at the accessory feeding station and is lowered to make the folded bag mouth overlap with the accessory, the first driving mechanism drives the bag mouth forming device (C) and the supporting plate (42) to move to the sewing device (A) at the sewing station to sew the bag mouth and the accessory; Step four, the first driving mechanism drives the bag mouth forming device (C) and the supporting plate (42) to move to the bag opening cloth piece feeding station, releases the supporting plate (42), the clamping mechanism (43) clamps the supporting plate (42) and moves the supporting plate (42) to the accessory feeding station under the driving of the second driving mechanism; the sewn bag opening cloth piece is taken away.

9. The process of bag mouth seaming according to claim 8, wherein: In step three, when the bag mouth is sewn with the accessory, another accessory is placed on the supporting plate (42) at the accessory feeding station; the sewn bag opening cloth piece moves to the bag opening cloth piece feeding station together with the bag mouth forming device (C) and the supporting plate (42), the supporting plate (42) is released, and the bag mouth forming device (C) moves above the supporting plate (42) at the accessory feeding station and is lowered to make the sewn bag opening cloth piece overlap with another accessory, and the first driving mechanism drives the bag mouth forming device (C) and the supporting plate (42) to move to the sewing device (A) at the sewing station to sew the bag opening cloth piece and another accessory.

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