Bag-opening sewing machine

Abstract

The utility model discloses a bag opening sewing machine which comprises a machine frame, a first sewing tray, a bag opening cutting device, an outer pressing frame device and a first sewing device. A working table and a first tray locking mechanism are arranged on the rack, and a sewing station I and a bag opening station are arranged on the working table; the outer pressing frame device comprises a pressing frame and a second tray locking mechanism, and after the outer pressing frame device moves to a sewing station I, the sewing tray I is locked by the second tray locking mechanism; therefore, the sewing tray is designed to be switched in two states for use, is locked by the first tray locking mechanism on the rack so as to be fixed on the working table, and is locked by the second tray locking mechanism of the outer pressing frame device so as to be capable of synchronously displacing at the first sewing station, an additional cloth bag stacking area is not needed, the displacement stroke is shortened, the operation efficiency is effectively improved, and the sewing efficiency is improved. And a traditional cloth wrapping plate conveying mechanism is omitted, so that the machine table is simplified, and the control reliability of the machine table is improved.

Description

Technical Field

[0001] This utility model relates to the field of bag opening machines, and in particular to a bag opening sewing machine, which is mainly used, but not limited to, for bag opening and sewing operations on clothing products. 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 on. Currently, the industry uses automatic bag opening and sewing machines for this process.

[0003] For example, CN118854565A discloses a bag opening machine, the bag opening method of which includes the following steps: Step 1, a piece of fabric for pocket opening is placed on the base plate below the laser cutting mechanism, and a piece of fabric for sewing the pocket is placed on the pocket fabric plate in the bag stacking area. Then, the laser cutting mechanism cuts a "Y"-shaped opening or an "I"-shaped opening according to the size of the pocket. At this time, the inserting knife mechanism is waiting next to the laser cutting mechanism; Step 2, the base plate is raised, and the base plate moves the fabric to the bottom of the inserting knife mechanism and pauses briefly. Then, the base plate and the inserting knife mechanism move laterally towards the bag stacking area. During the lateral movement, the inserting knife mechanism and the material fixing component and the material pulling component in the base plate fold the pocket; Step 3, the base plate moves the bag fabric. When the support mechanism is above, the bag support mechanism supports the bottom of the bag and moves laterally to the bag stacking area together with the base plate; in step four, the bag support mechanism resets, the base plate presses down, so that the fabric on the pocket and the pocket plate overlaps, and the inserting knife mechanism resets; in step five, the base plate is connected to the pocket plate through the fixing mechanism and moves laterally to the sewing area together with it; in step six, the sewing mechanism sews the pocket and the fabric, and at the same time, the pocket plate conveying mechanism conveys the second pocket plate to the bag stacking area and resets after it is placed; in step seven, after the sewing is completed, the base plate moves the pocket plate below the laser cutting mechanism and lowers the pocket plate; in step eight, after the pocket plate conveying mechanism removes the pocket plate from step seven, the base plate moves down to the worktable.

[0004] It is evident that the substrate needs to be equipped with a displacement drive, and the pocket plate needs to be equipped with a pocket plate conveying mechanism. The pocket plate is moved laterally from the bag stacking area to the sewing area together with the substrate to cooperate with the sewing operation. After the sewing is completed, the substrate drives the pocket plate to move below the laser cutting mechanism and puts the pocket plate down. Then the pocket plate conveying mechanism takes away the pocket plate.

[0005] The above bag opening machine has some disadvantages: it relies on a cloth bag stacking area, resulting in a large number of workstations that need to be set on the workbench, a large machine size, and the base plate needs to be moved from the bag opening area to the cloth bag stacking area, then from the cloth bag stacking area to the sewing area via the bag opening area, and then from the sewing area to the bag opening area, a circular trip, so as to complete a sewing operation; if secondary sewing is required, it is more complex, the base plate needs to be moved from the bag opening area to the cloth bag stacking area again, then from the cloth bag stacking area to the sewing area via the bag opening area, and then from the sewing area to the bag opening area, so as to complete secondary sewing; the base plate moving process is complex, time-consuming, and at least two cloth holding plates need to be continuously taken and placed by the cloth holding plate conveying mechanism, which is complex in structure; and it is not conducive to further improving the bag opening and sewing efficiency.

[0006] Therefore, it is necessary to study a new technical solution to solve the above problems. Practical new type content

[0007] Therefore, the utility model mainly aims at the defects of the prior art, and provides a bag opening and sewing machine, which is switched between two states by a sewing tray, is locked by a first tray locking mechanism on a rack to be fixed on a workbench, is locked by a second tray locking mechanism of an outer pressure frame device to be displaced synchronously at a sewing station, does not need an additional cloth bag stacking area, shortens the displacement stroke, effectively improves the operation efficiency, and saves a traditional cloth holding plate conveying mechanism, so that the machine is simplified and the control reliability of the machine is improved.

[0008] To achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A bag opening and sewing machine comprises:

[0010] A rack, a workbench and a first tray locking mechanism are arranged on the rack, a sewing station one and a bag opening station are arranged on the workbench, and the first tray locking mechanism is arranged corresponding to the sewing station one;

[0011] A sewing tray one is arranged on the workbench corresponding to the sewing station one, in a first state, the sewing tray one is locked by the first tray locking mechanism, so that the sewing tray one is fixed on the workbench;

[0012] A bag opening and cutting device is arranged corresponding to the bag opening station;

[0013] The outer pressing frame device can be automatically displaced between the first sewing station and the bag opening station. The outer pressing frame device comprises a pressing frame and a second tray locking mechanism. When the outer pressing frame device is displaced to the first sewing station, the first tray locking mechanism is unlocked, and the second tray locking mechanism locks the first sewing tray, so that the first sewing tray and the outer pressing frame device are fixed to each other and can be synchronously displaced.

[0014] The sewing device one is arranged corresponding to the first sewing station.

[0015] As a preferred solution, the first locking part and the second locking part are arranged on the first sewing tray. In the first state, the first locking part is locked by the first tray locking mechanism. In the second state, the second locking part is locked by the second tray locking mechanism.

[0016] As a preferred solution, the first locking part is a first positioning groove, the first tray locking mechanism comprises a first locking cylinder arranged below the workbench surface, the first locking cylinder is drivingly connected with a first locking pin, the first locking pin extends into the first positioning groove to lock the first sewing tray, and the first locking pin is withdrawn from the first positioning groove to unlock the first sewing tray.

[0017] As a preferred solution, the second locking part is a first positioning column, the second tray locking mechanism comprises a second locking cylinder arranged on the pressing frame, the second locking cylinder is drivingly connected with a locking block, the locking block is arranged with a bottom-opened locking groove, the locking block is displaced downward to make the locking groove cover the first positioning column to lock the first sewing tray, and the locking block is displaced upward to make the locking groove disengage from the first positioning column to unlock the first sewing tray.

[0018] As a preferred solution, further comprising:

[0019] The workbench surface is further arranged with a second sewing station, the first sewing station and the second sewing station are respectively arranged on two sides of the bag opening station, the outer pressing frame device can be automatically displaced between the bag opening station, the first sewing station and the second sewing station, the rack is further arranged with a third tray locking mechanism corresponding to the second sewing station. The second sewing tray is arranged on the workbench surface and corresponding to the second sewing station. In the first state, the second sewing tray is locked by the third tray locking mechanism, so that the second sewing tray is fixed on the workbench surface.

[0020] Sewing device two; the sewing device two corresponds to the sewing station two is provided;

[0021] When the outer pressure frame device is displaced to the sewing station two, in the second state, the third tray locking mechanism is unlocked, and the second tray locking mechanism is locked, so that the sewing tray two and the outer pressure frame device are fixed to each other to be synchronized with the sewing station two.

[0022] As a preferred solution, the sewing tray two is provided with a third locking part and a fourth locking part; in the first state, the third locking part is locked by the third tray locking mechanism; in the second state, the fourth locking part is locked by the second tray locking mechanism.

[0023] As a preferred solution, the third locking part is a second positioning groove, and the third locking cylinder is arranged below the workbench surface, and the second locking pin is drivenly connected to the third locking cylinder, and the second locking pin extends into the second positioning groove to lock the sewing tray two, and the second locking pin exits the second positioning groove to unlock the sewing tray two.

[0024] As a preferred solution, the fourth locking part is a second positioning column, and the second positioning column is locked by the second tray locking mechanism, and when the second tray locking mechanism is separated from the second positioning column, the sewing tray two is unlocked.

[0025] As a preferred solution, the pressure frame is further provided with an automatic folding mechanism, and the automatic folding mechanism performs a folding action during the displacement of the outer pressure frame device to the sewing station one.

[0026] As a preferred solution, the rack is provided with an X-axis translation driving mechanism, and the outer pressure frame device further comprises a translation base, a first lifting base, a second lifting base and an inner pressure frame, the X-axis translation driving mechanism is drivingly connected to the translation base, the translation base is provided with a first lifting driving unit, the first lifting driving unit is drivingly connected to the first lifting base, so that the first lifting base is lifted along the Z-axis relative to the translation base; the pressure frame and the second tray locking mechanism are connected to the first lifting base, the first lifting base is provided with a second lifting driving unit, the second lifting driving unit is drivingly connected to the second lifting base, so that the second lifting base is lifted along the Z-axis relative to the first lifting base, the second lifting base is further connected with a first Y-axis translation driving unit, and the first Y-axis translation driving unit is drivingly connected to the inner pressure frame.

[0027] The automatic folding mechanism comprises a plug-in piece assembly and a material pulling and folding assembly.

[0028] The plug-in piece assembly comprises two plug-in pieces, a second Y-axis translation driving unit and a third lifting base, the first lifting base is further provided with a third lifting driving unit, the third lifting driving unit is drivingly connected to the third lifting base, so that the third lifting base moves up and down along the Z-axis relative to the first lifting base, the third lifting base is connected to the second Y-axis translation driving unit, and the second Y-axis translation driving unit is drivingly connected to the two plug-in pieces.

[0029] The material pulling and folding assembly is arranged on the pressing frame, the material pulling and folding assembly comprises a first material pulling and folding assembly and a second material pulling and folding assembly, the first material pulling and folding assembly comprises a first pressing piece and a first pulling piece, the first pressing piece is located above the first pulling piece, and the first pulling piece is provided with a first material passing groove; the second material pulling and folding assembly comprises a second pressing piece and a second pulling piece, the second pressing piece is located above the second pulling piece, and the second pulling piece is provided with a second material passing groove; the first pressing piece and the second pressing piece are connected to a group of front and rear opening and closing air cylinders, and the first pulling piece and the second pulling piece are connected to another group of front and rear opening and closing air cylinders.

[0030] Compared with the prior art, the utility model has obvious advantages and beneficial effects, specifically speaking, according to the above technical scheme, the sewing tray is designed to switch between two states, is locked by the first tray locking mechanism on the rack to be fixed on the workbench, is locked by the second tray locking mechanism of the outer pressing frame device to be displaced synchronously at the sewing station, does not need an additional cloth bag stacking area, shortens the displacement stroke, effectively improves the operation efficiency, and eliminates the traditional cloth conveying mechanism, so that the machine is simplified, and the control reliability of the machine is improved.

[0031] Compared with the prior art, the utility model has obvious advantages and beneficial effects, specifically speaking, according to the above technical scheme, the sewing tray is designed to switch between two states, is locked by the first tray locking mechanism on the rack to be fixed on the workbench, is locked by the second tray locking mechanism of the outer pressing frame device to be displaced synchronously at the sewing station, does not need an additional cloth bag stacking area, shortens the displacement stroke, effectively improves the operation efficiency, and eliminates the traditional cloth conveying mechanism, so that the machine is simplified, and the control reliability of the machine is improved.

[0032] In order to more clearly set forth the structural features and functions of the utility model, the utility model will be described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is the first perspective view of the bag opening sewing machine of the embodiment of the utility model;

[0034] Figure 2 is the second perspective view of the bag opening sewing machine of the embodiment of the utility model;

[0035] Figure 3is the third perspective view of the bag opening sewing machine of the embodiment of the utility model;

[0036] Figure 4 is the perspective view of the sewing tray one of the embodiment of the utility model;

[0037] Figure 5 is the exploded view of the sewing tray one of the embodiment of the utility model;

[0038] Figure 6 is the first perspective view of the outer pressing frame device of the embodiment of the utility model;

[0039] Figure 7 is the partial exploded view of the outer pressing frame device of the embodiment of the utility model (mainly shows the second tray locking mechanism);

[0040] Figure 8 is the second perspective view of the outer pressing frame device of the embodiment of the utility model;

[0041] Figure 9 is the third perspective view of the outer pressing frame device of the embodiment of the utility model;

[0042] Figure 10 is the top view of the outer pressing frame device of the embodiment of the utility model;

[0043] Figure 11 is the detailed exploded view of the outer pressing frame device of the embodiment of the utility model;

[0044] Figure 12 is the side view of the outer pressing frame device of the embodiment of the utility model.

[0045] The drawing mark explanation: rack 10, workbench 11, sewing station one 111, bag opening station 112, sewing station two 113, first tray locking mechanism 12, first locking pin 121, X-axis translation driving mechanism 13, third tray locking mechanism 14, second locking pin 141, sewing tray one 20, first locking part 21, second locking part 22, tray main body 201, locking piece 202, bag opening cutting device 30, outer pressing frame device 40, pressing frame 41, bag opening avoiding groove 411, vertical guide groove 412, longitudinal connecting strip 1, second tray locking mechanism 42, second locking cylinder 421, locking block 422, locking groove 423, automatic folding edge mechanism 43, insert piece assembly 431, insert piece 4311, third lifting base 4312, third lifting driving unit 4313, material pulling and folding edge assembly 432, first pressing piece 4321, first pulling piece 4322, first material passing groove 4322', second pressing piece 4323, second pulling piece 4324, two groups of front and rear opening and closing cylinders A1 on the left and right outer sides, two groups of front and rear opening and closing cylinders A2 on the left and right inner sides, translation base 44, first lifting base 45, second lifting base 46, inner pressing frame 47, first lifting driving unit 48, sewing device one 50, sewing tray two 60, sewing device two 70. DETAILED DESCRIPTION

[0046] Please refer to Figures 1 to 12 , which shows the specific structure of the embodiment of the utility model.

[0047] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" and the like is the orientation or position relationship based on the drawing shown, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the utility model.

[0048] A bag opening sewing machine, which is mainly suitable for bag opening and sewing of garment products, comprises:

[0049] Rack 10; the rack 10 is provided with a workbench 11 and a first tray locking mechanism 12, the workbench 11 is sequentially provided with a sewing station one 111 and a bag opening station 112 from left to right, and the first tray locking mechanism 12 is arranged corresponding to the sewing station one 111;

[0050] Sewing tray one 20; the sewing tray one 20 is located on the workbench 11 and is arranged corresponding to the sewing station one 111, in the first state, the sewing tray one 20 is locked by the first tray locking mechanism 12, so that the sewing tray one 20 is fixed on the workbench 11;

[0051] A bag opening and cutting device 30 is arranged corresponding to the bag opening station 112 for cutting and opening a bag on a cloth piece (or other sewable fabric). In this embodiment, a laser cutting device is used, but other cutting devices such as a cutter can also be used.

[0052] An outer pressing frame device 40 is capable of automatically moving between the first sewing station 111 and the bag opening station 112. The outer pressing frame device 40 includes a pressing frame 41, a bag opening avoiding groove 411 arranged on the pressing frame 41, and a second tray locking mechanism 42. When the outer pressing frame device 40 moves to the first sewing station 111, the first tray locking mechanism 12 is unlocked from the first sewing tray 20, and the second tray locking mechanism 42 locks the first sewing tray 20, so that the first sewing tray 20 and the outer pressing frame device 40 are fixed to each other and can move synchronously in the first sewing station 111.

[0053] A first sewing device 50 is arranged corresponding to the first sewing station 111.

[0054] In this embodiment, the first sewing tray 20 is provided with a first locking part 21 and a second locking part 22. In a first state, the first locking part 21 is locked by the first tray locking mechanism 12. In a second state, the second locking part 22 is locked by the second tray locking mechanism 42. For example, the first locking part 21 is a first positioning groove penetrating through the first sewing tray 20, the first tray locking mechanism 12 includes a first locking cylinder (not shown in the figure) arranged below the workbench surface 11, the first locking cylinder is drivingly connected with a first locking pin 121, the first locking pin 121 extends upward into the first positioning groove to lock the first sewing tray 20, and the first locking pin 121 exits downward from the first positioning groove to unlock the first sewing tray 20. The second locking part 22 is a first positioning column protruding upward from the top of the first sewing tray 20, the second tray locking mechanism 42 includes a second locking cylinder 421 arranged at the bottom of the pressing frame 41, the second locking cylinder 421 is drivingly connected with a locking block 422, the locking block 422 is provided with a locking groove 23 with an open bottom, the locking block 422 moves downward so that the locking groove 23 covers the first positioning column to lock the first sewing tray 20, and the locking block 422 moves upward so that the locking groove 23 is separated from the first positioning column to unlock the first sewing tray 20.

[0055] If the bag opening sewing machine only has one sewing head, it can only be used for one-time sewing operation, such as opening and sewing a false bag.

[0056] Further, the bag opening sewing machine further comprises a sewing tray two 60 and a sewing device two 70, so as to form a double sewing head bag opening sewing machine, which is usually used for opening and sewing a real bag, thus requiring twice sewing; of course, the double sewing head bag opening sewing machine can be used for once sewing by using one of the sewing heads in actual use, for example, by using the bag opening cutting device 30 and the sewing device one 50, the opening and sewing of a false bag can be realized, that is, the double sewing head bag opening sewing machine can meet different use requirements of real bags and false bags.

[0057] The workbench surface 11 is further provided with a sewing station two 113, which is located on the left and right sides of the bag opening station 112 respectively, and the outer pressing frame device 40 can be automatically displaced to the bag opening station 112, the sewing station one 111 and the sewing station two 113, and is usually displaced from the bag opening station 112 to the sewing station one 111 to perform first sewing, and then is displaced from the sewing station one 111 to the sewing station two 113 to perform second sewing, and after the sewing is completed, can be discharged on the right side of the sewing station two 113 or can be returned to the bag opening station 112 for discharge; the rack 10 is further provided with a third tray locking mechanism 14, which is arranged corresponding to the sewing station two 113; the sewing tray two 60 is arranged on the workbench surface 11 and corresponding to the sewing station two 113, and in a first state, the sewing tray two 60 is locked by the third tray locking mechanism 14, so that the sewing tray two 60 is fixed on the workbench surface 11;

[0058] The sewing device two 70 is arranged corresponding to the sewing station two 113;

[0059] When the outer pressing frame device 40 is displaced to the sewing station two 113, in a second state, the third tray locking mechanism 14 releases the locking of the sewing tray two 60, and the sewing tray two 60 is locked by the second tray locking mechanism 42, so that the sewing tray two 60 and the outer pressing frame device 40 are fixed to each other to be synchronously displaced in the sewing station two 113.

[0060] The structure of the second sewing tray 60 is the same as or substantially the same as that of the first sewing tray 20, and both can include a tray body 201 and a locking piece 202 which are assembled separately, the tray body 201 is provided with a sewing avoidance slot and a plurality of dense small holes at the left and right ends of the sewing avoidance slot, the tray body 201 and the locking piece 202 can be selected and made respectively, which is easy to process and can better meet the different functional requirements of each other, the locking piece 202 is installed at the rear end of the tray body 201, and the first locking part 21 and the second locking part 22 are respectively formed at the left and right ends of the locking piece 202; similarly, the second sewing tray 60 is provided with a third locking part 61 and a fourth locking part 62; in the first state, the third locking part 61 is locked by the third tray locking mechanism 14; in the second state, the fourth locking part 62 is locked by the second tray locking mechanism 42. The third locking part 61 is a second positioning slot that penetrates the second sewing tray 60 from top to bottom, the third tray locking mechanism 14 includes a third locking cylinder (not shown in the figure) arranged below the workbench top 11, the third locking cylinder is drivingly connected with a second locking pin 141, the second locking pin 141 extends upward into the second positioning slot to lock the second sewing tray 60, and the second locking pin 141 exits the second positioning slot downward to release the lock of the second sewing tray 60. The fourth locking part 62 is a second positioning column protruding upward from the top of the second sewing tray 60, the second positioning column is locked by the second tray locking mechanism 42, and when the second tray locking mechanism 42 is separated from the second positioning column, the lock of the second sewing tray 60 is released.

[0061] In this embodiment, the pressing frame 41 is also provided with an automatic folding mechanism 43, which performs folding action during the displacement of the outer pressing frame device 40 to the sewing station 111. Specifically, the rack 10 is provided with an X-axis translation driving mechanism 13, which drives the outer pressing frame device 40 to perform X-axis translation action; the outer pressing frame device 40 further includes a translation base 44, a first lifting base 45, a second lifting base 46, and an inner pressing frame 47, the X-axis translation driving mechanism 13 is drivingly connected to the translation base 44, the translation base 44 is provided with a first lifting driving unit 48, the first lifting driving unit 48 is drivingly connected to the first lifting base 45, so that the first lifting base 45 performs Z-axis lifting action relative to the translation base 44; the pressing frame 41 and the second tray locking mechanism 42 are both connected to the first lifting base 45, usually the pressing frame 41 is connected to the bottom of the first lifting base 45 and extends forward, while the second tray locking mechanism 42 is arranged at the left and right sides of the lifting base, for example, at the left and right side edges of the rear end face. The first lifting base 45 is provided with a second lifting driving unit (not shown in the figure), which is drivingly connected to the second lifting base 46, so that the second lifting base 46 performs Z-axis lifting action relative to the first lifting base 45, the second lifting base 46 is further connected with a first Y-axis translation driving unit, which is drivingly connected to the inner pressing frame 47, so that the inner pressing frame 47 can perform Y-axis translation action and Z-axis lifting action.

[0062] The automatic folding mechanism 43 includes a plug-in piece assembly 431 and a material pulling and folding assembly 432.

[0063] The plug-in piece assembly 431 includes two plug-in pieces 4311, a second Y-axis translation driving unit, and a third lifting base 4312, the first lifting base 45 is further provided with a third lifting driving unit 4313, which is drivingly connected to the third lifting base 4312, so that the third lifting base 4312 performs Z-axis lifting action relative to the first lifting base 45, the third lifting base 4312 is connected to the second Y-axis translation driving unit, which is drivingly connected to the two plug-in pieces 4311, so that the two plug-in pieces 4311 can perform Y-axis translation action and Z-axis lifting action; the two plug-in pieces 4311 are a group, and their spacing is adjustable to meet the requirements of different bag opening sizes.

[0064] The pulling and folding assembly 432 is arranged on the pressing frame 41; the pulling and folding assembly 432 includes a first pulling and folding assembly 432 and a second pulling and folding assembly 432, the first pulling and folding assembly includes a first pressing piece 4321 and a first pulling piece 4322, the first pressing piece 4321 is located above the first pulling piece 4322, the first pulling piece 4322 is provided with a left and right extending first material passing groove 4322', which is used for extending one of the inserting pieces 4311 into the first material passing groove 4322' to insert the bag opening edge on one side (for example, the rear side) into the first material passing groove 4322'; the second pulling and folding assembly includes a second pressing piece 4323 and a second pulling piece 4324, the second pressing piece 4323 is located above the second pulling piece 4324, the second pulling piece 4324 is provided with a left and right extending second material passing groove (not shown in the figure), which is used for extending the other inserting piece 4311 into the second material passing groove to insert the bag opening edge on the other side (for example, the front side) into the second material passing groove; the first pressing piece 4321 and the second pressing piece 4323 are connected to a set of front and rear opening and closing air cylinders, and the first pulling piece 4322 and the second pulling piece 4324 are connected to another set of front and rear opening and closing air cylinders, so as to drive the first pressing piece 4321 and the first pulling piece 4322 to move backward (reset forward), and drive the second pressing piece 4323 and the second pulling piece 4324 to move forward (reset backward). In actual operation, the first pulling piece 4322 and the second pulling piece 4324 are synchronously pulled backward and forward respectively, and then the first pressing piece 4321 and the second pressing piece 4323 are synchronously displaced backward and forward respectively. In this embodiment, the first pressing piece 4321, the first pulling piece 4322, the second pressing piece 4323 and the second pulling piece 4324 are all designed as U-shaped structures, which have longitudinal connecting strips 1 on the left and right sides, and 8 vertical guide grooves 412 are arranged on the pressing frame 41, which are arranged side by side along the left and right spacing, and the longitudinal connecting strips 1 are arranged one by one correspondingly, which is beneficial to the accurate folding action, and the front and rear opening and closing air cylinders are arranged in left and right groups, which are connected to the corresponding front and rear opening and closing air cylinders through the longitudinal connecting strips, which is beneficial to the driving balance. As shown in Figure 10 and Figure 11 The left and right outer two groups of front and rear opening and closing air cylinders A1 are used for connecting the longitudinal connecting strips 1 at the left and right ends of the first pulling piece 4322 and the second pulling piece 4324, and the left and right inner two groups of front and rear opening and closing air cylinders A2 are used for connecting the longitudinal connecting strips 1 at the left and right ends of the first pressing piece 4321 and the second pressing piece 4323.

[0065] The working process of the bag opening sewing machine of this embodiment is as follows:

[0066] Step 1, as Figure 1As shown, the outer pressure frame device 40 is located at the bag opening station 112. The fabric to be opened is loaded onto the outer pressure frame 41 (the inner pressure frame 47 maintains a vertical distance from the pressure frame 41 to allow the fabric to be placed in. After the fabric is placed in place, the inner pressure frame 47 descends and presses against the fabric until it needs to be unloaded, at which point the inner pressure frame 47 rises to release the pressure on the fabric).

[0067] Step 2: The bag-opening and cutting device 30 cuts a slit in the fabric.

[0068] Step 3: The outer pressure frame device 40 moves to the sewing station 111. During this movement, the automatic folding mechanism 43 on the outer pressure frame device 40 performs a folding action and completes the folding of the bag opening. (During the folding, the two inserts move forward together to the top of the inner pressure frame 47, corresponding to the top of the bag opening clearance groove 411. The two inserts are inserted downwards corresponding to the first material feed groove 4322' and the second material feed groove, causing the front and rear opposite sides of the bag opening to bend downwards. Then the two inserts return to their original positions, and then the first pull piece 4322 pulls the material backwards, causing the rear side of the bag opening to fold against the first pressure piece 411.) Below 321, the material is pulled forward by the second pull tab 4324, causing the front edge of the bag opening to fold under the second pressure plate 4323. Then, the first pressure plate 4321 moves backward a short distance, and the second pressure plate 4323 moves forward a short distance. At this time, a folded edge sewing area is formed on the front side of the first pressure plate 4321 and the first pull tab 4322, and on the rear side of the second pressure plate 4323 and the second pull tab 4324. In this state, the leading edges of the first pressure plate 4321 and the first pull tab 4322 are usually flush, and the rear edges of the second pressure plate 4323 and the second pull tab 4324 are flush.

[0069] Step 4, as follows Figure 2 As shown, at the sewing station 111, the sewing device 50 performs the first sewing. When the outer pressure frame device 40 moves to the sewing station 111, the first tray locking mechanism 12 automatically releases the lock on the sewing tray 20, and the second tray locking mechanism 42 locks the sewing tray 20, so that the sewing tray 20 and the outer pressure frame device 40 are fixed to each other and can move synchronously with the sewing station 111, so as to better meet the sewing processing requirements, have a good positioning effect on the fabric, and help improve the sewing yield and accuracy.

[0070] Step 5: The outer pressure frame device 40 moves from the first sewing station 111 to the second sewing station 113; after the outer pressure frame device 40 releases the lock on the first sewing tray 20, the first tray locking mechanism 12 restores the lock on the first sewing tray 20, so that the first sewing tray 20 is fixed on the workbench 11.

[0071] Step 6, as follows Figure 3 As shown, a second sewing is performed at the second sewing station 113. When the outer pressure frame device 40 moves to the second sewing station 113, the third tray locking mechanism 14 automatically releases the lock on the second sewing tray 60, and the second tray locking mechanism 42 locks the second sewing tray 60, so that the second sewing tray 60 and the outer pressure frame device 40 are fixed to each other so that they can move synchronously with the second sewing station 113, so as to better meet the sewing processing requirements, have a good positioning effect on the fabric, and are conducive to improving the sewing yield and accuracy.

[0072] Step 7: After sewing is completed, the material can be unloaded at the right side of the sewing station 113, or the outer pressure frame device 40 can return to the bag opening station 112 for unloading. In this embodiment, the outer pressure frame device 40 is returned to the bag opening station 112 for unloading.

[0073] If only opening the bag and one sewing operation are required, the workflow of the bag opening sewing machine includes steps 1-4 as described above. Then, step 5 is changed to the outer pressure frame device 40 moving from the sewing station 111 to the bag opening station 112 to unload the material.

[0074] The key design feature of this utility model is that the sewing tray is designed to switch between two states. It is locked to the worktable 11 by the first tray locking mechanism 12 on the frame 10, and locked to the worktable 11 by the second tray locking mechanism 42 of the outer pressure frame device 40 so that it can move synchronously with the sewing station 111. This eliminates the need for an additional bag stacking area, shortens the displacement stroke, effectively improves work efficiency, and eliminates the traditional bag conveyor mechanism, thus simplifying the machine and improving the control reliability of the machine.

[0075] Compared with traditional technology, this utility model only requires half a circular stroke to complete one sewing operation and only one circular stroke to complete two sewing operations, both of which are shortened by 50%.

[0076] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A pocket-opening sewing machine, characterized in that, Including: A frame; the frame is provided with a worktable and a first tray locking mechanism, the worktable is provided with a sewing station and a bag opening station, and the first tray locking mechanism is provided corresponding to the sewing station. Sewing tray one; the sewing tray one is located on the workbench and is set corresponding to the sewing station one. In the first state, the sewing tray one is locked by the first tray locking mechanism, so that the sewing tray one is fixed on the workbench. A bag-opening and cutting device; the bag-opening and cutting device is set up corresponding to the bag-opening station; An external pressure frame device; the external pressure frame device can automatically move between the first sewing station and the first bag opening station; the external pressure frame device includes a pressure frame and a second tray locking mechanism. When the external pressure frame device moves to the first sewing station, in the second state, the first tray locking mechanism releases the lock on the first sewing tray, and the second tray locking mechanism locks the first sewing tray, so that the first sewing tray and the external pressure frame device are fixed to each other so that they can move synchronously with the first sewing station; Sewing device one; the sewing device one is set up corresponding to the sewing station one.

2. The pocket-opening sewing machine according to claim 1, characterized in that, The sewing tray is provided with a first locking part and a second locking part; in a first state, the first locking part is locked by the first tray locking mechanism; in a second state, the second locking part is locked by the second tray locking mechanism.

3. A pocket-opening sewing machine according to claim 2, characterized in that, The first locking part is a first positioning groove. The first tray locking mechanism includes a first locking cylinder disposed below the worktable surface. The first locking cylinder is driven to connect to a first locking pin. The first locking pin extends upward into the first positioning groove to lock the sewing tray one. When the first locking pin moves downward out of the first positioning groove, the locking of the sewing tray one is released.

4. A pocket-opening sewing machine according to claim 2 or 3, characterized in that, The second locking part is the first positioning post, and the second tray locking mechanism includes a second locking cylinder disposed on the pressure frame. The second locking cylinder is driven to connect to a locking block. The locking block is provided with a locking groove with an open bottom. When the locking block moves downward, the locking groove fits onto the first positioning post to lock the sewing tray. When the locking block moves upward, the locking groove disengages from the first positioning post, thus releasing the lock on the sewing tray.

5. A pocket-opening sewing machine according to claim 1, characterized in that, It also includes: A second sewing tray; a second sewing station is also provided on the workbench, the second sewing station and the first sewing station are respectively located on both sides of the opening station, the outer pressure frame device can automatically move between the opening station, the first sewing station and the second sewing station, the frame is also provided with a third tray locking mechanism, the third tray locking mechanism is set corresponding to the second sewing station; the second sewing tray is located on the workbench and is set corresponding to the second sewing station, in the first state, the second sewing tray is locked by the third tray locking mechanism, so that the second sewing tray is fixed on the workbench; Sewing device two; the sewing device two is set up corresponding to the sewing station two; When the outer pressure frame device moves to the second sewing station, in the second state, the third tray locking mechanism releases the lock on the second sewing tray, and the second tray locking mechanism locks the second sewing tray, so that the second sewing tray and the outer pressure frame device are fixed to each other so that they can move synchronously with the second sewing station.

6. A pocket-opening sewing machine according to claim 5, characterized in that, The sewing tray 2 is provided with a third locking part and a fourth locking part; in the first state, the third locking part is locked by the third tray locking mechanism; in the second state, the fourth locking part is locked by the second tray locking mechanism.

7. A pocket-opening sewing machine according to claim 6, characterized in that, The third locking part is the second positioning groove. The third tray locking mechanism includes a third locking cylinder disposed below the worktable surface. The third locking cylinder is driven by a second locking pin. The second locking pin extends upward into the second positioning groove to lock the sewing tray two. When the second locking pin moves downward out of the second positioning groove, the locking of the sewing tray two is released.

8. A pocket-opening sewing machine according to claim 6 or 7, characterized in that, The fourth locking part is the second positioning post, which is locked by the second tray locking mechanism. When the second tray locking mechanism disengages from the second positioning post, the locking of the sewing tray is released.

9. A pocket-opening sewing machine according to claim 1, characterized in that, The pressing frame is also equipped with an automatic folding mechanism. When the outer pressing frame device moves to the sewing station one, the automatic folding mechanism performs an folding action.

10. A pocket-opening sewing machine according to claim 9, characterized in that, The frame is equipped with an X-axis translation drive mechanism. The outer pressure frame device further includes a translation base, a first lifting base, a second lifting base, and an inner pressure frame. The X-axis translation drive mechanism is driven and connected to the translation base. The translation base is equipped with a first lifting drive unit, which is driven and connected to the first lifting base, causing the first lifting base to move up and down relative to the translation base along the Z-axis. The pressure frame and the second tray locking mechanism are both connected to the first lifting base. The first lifting base is equipped with a second lifting drive unit, which is driven and connected to the second lifting base, causing the second lifting base to move up and down relative to the first lifting base along the Z-axis. The second lifting base is also connected to a first Y-axis translation drive unit, which is driven and connected to the inner pressure frame. The automatic folding mechanism includes an insert assembly and a material pulling and folding assembly; The insert assembly includes two inserts, a second Y-axis translation drive unit, and a third lifting base. The first lifting base is further provided with the third lifting drive unit, which is driven and connected to the third lifting base, so that the third lifting base moves up and down relative to the first lifting base along the Z-axis. The third lifting base is connected to the second Y-axis translation drive unit, which is driven and connected to the two inserts. The material pulling and folding assembly is disposed on the pressure frame; the material pulling and folding assembly includes a first material pulling and folding assembly and a second material pulling and folding assembly, the first material pulling and folding assembly includes a first pressure plate and a first pulling plate, the first pressure plate is located above the first pulling plate, and the first pulling plate is provided with a first material passage groove; the second material pulling and folding assembly includes a second pressure plate and a second pulling plate, the second pressure plate is located above the second pulling plate, and the second pulling plate is provided with a second material passage groove; the first pressure plate and the second pressure plate are connected to a set of front and rear opening and closing cylinders, and the first pulling plate and the second pulling plate are connected to another set of front and rear opening and closing cylinders.

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