Frame pressing device with edge folding function and bag opening sewing machine

Abstract

The utility model discloses a frame pressing device with an edge folding function and a pocket sewing machine. The frame pressing device with the edge folding function comprises a pressing frame and an automatic edge folding mechanism. The automatic edge folding mechanism comprises an inserting piece assembly and a material pulling and edge folding assembly. The insertion piece assembly comprises two insertion pieces capable of automatically ascending and descending; the material pulling and edge folding assembly comprises a first pressing piece, a first pulling piece, a second pressing piece and a second pulling piece, the first pressing piece is located above the first pulling piece, the first pulling piece is provided with a first material passing groove for one inserting piece to stretch in, and the second pulling piece is provided with a second material passing groove for the other inserting piece to stretch in; the first pressing piece and the second pressing piece are connected to one set of front-back opening and closing air cylinders, and the first pulling piece and the second pulling piece are connected to the other set of front-back opening and closing air cylinders. In this way, the material pulling and edge folding assembly is simpler in structure, the transmission relation is simplified, the edge folding action is smoother, accurate and controllable, abrasion is reduced, the fault rate is effectively reduced, cutter replacement is easier and faster, and practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of bag opening machines, and in particular to a frame pressing device with a built-in folding function and a bag opening sewing machine, which is mainly used, but not limited to, for bag opening and sewing operations of 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 working principle of which includes: Step 1, placing a piece of fabric for the pocket opening on the base plate below the laser cutting mechanism, and placing a piece of fabric for sewing the pocket on the pocket fabric plate in the bag stacking area, and then the laser cutting mechanism cuts a "Y"-shaped opening or an "I"-shaped opening according to the size of the pocket, at which time the inserting knife mechanism is ready 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, and 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 to support the bag fabric. When the 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] The inserting mechanism and the material fixing and pulling components within the base plate perform a bag-folding action on the pocket. The material pulling mechanism includes four sets of material pulling blades, cylinder five, and multi-link assembly two. Each material pulling blade is provided with a slot. Cylinder five is linked to the material pulling blades through multi-link assembly two. The four material pulling blades can move along the four vertical directions of the through slot respectively. The material fixing mechanism is located above the material pulling mechanism. The material fixing mechanism includes four sets of material fixing blades, a guide plate, cylinder four, and multi-link assembly one. Cylinder four is linked to the guide plate through multi-link assembly one. The structure of multi-link assembly one is the same as that of multi-link assembly two.

[0005] Its structure is relatively complex and involves a large number of traditional parts. On the one hand, the bending process is prone to malfunctions or even wear and tear. On the other hand, replacing the cutting tools is troublesome.

[0006] Therefore, there is a need to study a new technical solution to solve the above problems. Utility model content

[0007] Therefore, the utility model discloses a kind of self folding function's frame pressing device and bag sewing machine of opening, material pulling folding subassembly structure is simpler, transmission relationship is simplified, folding action is more smooth, accurate and controllable, reduce wear and tear, effectively reduce failure rate, moreover, it becomes more easy and fast to replace tool, and practicality is strong.

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

[0009] A kind of self folding function's frame pressing device, including frame pressing and automatic folding mechanism;The automatic folding mechanism includes insert piece assembly and material pulling folding subassembly;

[0010] The insert piece assembly includes two automatically liftable insert pieces;

[0011] The material pulling folding subassembly is set on the frame pressing;The material pulling folding subassembly includes first pressing piece, first pulling piece, second pressing piece, second pulling piece, the first pressing piece is located above the first pulling piece, the first pulling piece is provided with first material passing groove for the insert piece to extend into, the second pressing piece is located above the second pulling piece and is located in front of the first pressing piece, the second pulling piece is provided with second material passing groove for another insert piece to extend into;The first pressing piece, the second pressing piece are connected on a set of front and rear opening and closing air cylinder, the first pulling piece, the second pulling piece are connected on another set of front and rear opening and closing air cylinder.

[0012] As a preferred scheme, the frame pressing is connected with first lifting base, the first lifting base is connected with first lifting drive unit, the first lifting drive unit is installed on translation base, the first lifting drive unit is drivenly connected to the first lifting base, so that the frame pressing is lifted along Z axis relative to the translation base with the first lifting base;Second lifting drive unit is arranged on the first lifting base, the second lifting drive unit is drivenly connected with second lifting base, so that the second lifting base is lifted along Z axis relative to the first lifting base, the second lifting base is also connected with first Y axis translation drive unit, and the first Y axis translation drive unit is drivenly connected with inner frame pressing.

[0013] As a preferred scheme, the two inserts are connected with a second Y-axis translation driving unit, the second Y-axis translation driving unit is installed on a third lifting base, and the second Y-axis translation driving unit drives the two inserts to move along the Y-axis; the third lifting base is connected with a third lifting driving unit, the third lifting driving unit is installed on the first lifting base, and the third lifting driving unit drives the third lifting base to move up and down along the Z-axis relative to the first lifting base.

[0014] As a preferred scheme, the first pressing piece, the first pulling piece, the second pressing piece and the second pulling piece are all designed in a U-shaped structure, each of the left and right sides has a longitudinal connecting strip, and eight vertical guide grooves are arranged on the pressing frame, the eight vertical guide grooves are arranged side by side along the left-right interval, and the longitudinal connecting strips are arranged one by one correspondingly, and meanwhile, the front and rear opening and closing cylinders are arranged in left and right groups, and the longitudinal connecting strips are connected to the corresponding front and rear opening and closing cylinders.

[0015] As a preferred scheme, the two groups of front and rear opening and closing cylinders on the left and right outer sides are connected to the longitudinal connecting strips at the left and right ends of the first pulling piece and the second pulling piece, and the two groups of front and rear opening and closing cylinders on the left and right inner sides are connected to the longitudinal connecting strips at the left and right ends of the first pressing piece and the second pressing piece.

[0016] As a preferred scheme, the first pressing piece, the first pulling piece, the second pressing piece and the second pulling piece all have front end cutters, the left and right ends of the front end cutters are detachably connected to the front ends of the corresponding longitudinal connecting strips, and the first material passing groove and the second material passing groove are arranged on the corresponding front end cutters.

[0017] As a preferred scheme, a tray locking mechanism is arranged on the first lifting base to be fixed with a sewing tray of a sewing station.

[0018] As a preferred scheme, a cover plate is detachably arranged on the top of the pressing frame, a bag opening avoidance groove is arranged on the pressing frame and the cover plate correspondingly, and the first pressing piece, the first pulling piece, the second pressing piece and the second pulling piece all extend into the gap between the cover plate and the pressing frame.

[0019] As a preferred scheme, among the eight vertical guide grooves, the inner bottom surfaces of the four vertical guide grooves on the left and right outer sides are lower than the inner bottom surfaces of the four vertical guide grooves on the left and right inner sides, the bottom surfaces of the longitudinal connecting strips at the left and right ends of the first pulling piece and the second pulling piece correspondingly contact the inner bottom surfaces of the four vertical guide grooves on the left and right outer sides, and the longitudinal connecting strips at the left and right ends of the first pressing piece and the second pressing piece correspondingly contact the inner bottom surfaces of the four vertical guide grooves on the left and right inner sides.

[0020] An open bag sewing machine comprises a frame, wherein the frame is provided with a self-flanging frame device as claimed in any one of the preceding claims.

[0021] The frame is provided with an X-axis translation driving mechanism, which drives the self-flanging frame device to displace along the X-axis relative to the frame.

[0022] Compared with the prior art, the utility model has obvious advantages and beneficial effects, specifically speaking, according to the above technical scheme, mainly through connecting the first pressing sheet and the second pressing sheet on a group of front and rear opening and closing air cylinders, connecting the first pulling sheet and the second pulling sheet on another group of front and rear opening and closing air cylinders, controlling the first pressing sheet and the second pressing sheet to synchronously pull backward and forward by a group of front and rear opening and closing air cylinders, controlling the first pulling sheet and the second pulling sheet to synchronously translate backward and forward by another group of front and rear opening and closing air cylinders, forming a sewing position, so that the pulling and flanging assembly structure is more simple, the transmission relationship is simplified, the flanging action is more smooth and accurate, wear is reduced, the failure rate is effectively reduced, and the cutter is more easily and quickly replaced, and the utility model has high practicality.

[0023] To make the structure features and effects of the utility model clearer, the utility model will be described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the first perspective view of the open bag sewing machine of the embodiment of the utility model;

[0025] Figure 2 It is the second perspective view of the open bag sewing machine of the embodiment of the utility model;

[0026] Figure 3 It is the third perspective view of the open bag sewing machine of the embodiment of the utility model;

[0027] Figure 4 It is the perspective view of the sewing tray one of the embodiment of the utility model;

[0028] Figure 5 It is the exploded view of the sewing tray one of the embodiment of the utility model;

[0029] Figure 6 It is the first perspective view of the outer pressing frame device (i.e. the self-flanging frame device) of the embodiment of the utility model;

[0030] Figure 7 It is the partial exploded view of the outer pressing frame device of the embodiment of the utility model (mainly showing the second tray locking mechanism);

[0031] Figure 8is the second perspective view of the outer pressing frame device of the embodiment of the utility model;

[0032] Figure 9 is the third perspective view of the outer pressing frame device of the embodiment of the utility model;

[0033] Figure 10 is the top view of the outer pressing frame device of the embodiment of the utility model;

[0034] Figure 11 is the detailed exploded view of the outer pressing frame device of the embodiment of the utility model;

[0035] Figure 12 is the side view of the outer pressing frame device of the embodiment of the utility model.

[0036] The drawing mark explanation: rack 10, workbench surface 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 drive 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 sheet 202, bag opening cutting device 30, outer pressing frame device 40, pressing frame 41, bag mouth empty slot 411, vertical guide groove 412, cover plate 4101, longitudinal connecting strip 1, second tray locking mechanism 42, second locking cylinder 421, locking block 422, locking groove 423, automatic edge folding mechanism 43, insert piece assembly 431, insert piece 4311, third lifting base 4312, third lifting drive unit 4313, material pulling and edge folding 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 drive unit 48, sewing device one 50, sewing tray two 60, sewing device two 70. DETAILED DESCRIPTION

[0037] Please refer to Figures 1 to 12 , which shows the specific structure of the embodiment of the utility model.

[0038] In the description of the utility model, it needs to be explained that the terms "upper", "lower", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do 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.

[0039] The utility model provides a kind of self folding function's frame pressing device, including frame pressing and automatic folding mechanism;The automatic folding mechanism includes insert piece assembly and material pulling and folding assembly;The insert piece assembly includes two automatic lifting insert pieces;The material pulling and folding assembly is arranged on the frame pressing;The material pulling and folding assembly includes first pressing piece, first pulling piece, second pressing piece, second pulling piece, the first pressing piece is above the first pulling piece, the first pulling piece is provided with first material passing groove for the insert piece to extend into, the second pressing piece is above the second pulling piece and is located in front of the first pressing piece, the second pulling piece is provided with second material passing groove for another insert piece to extend into;The first pressing piece, the second pressing piece are connected on a set of front and rear opening and closing air cylinder, the first pulling piece, the second pulling piece are connected on another set of front and rear opening and closing air cylinder, by a set of front and rear opening and closing air cylinder, the first pressing piece, the second pressing piece are controlled to be pulled back, pulled forward synchronously, by another set of front and rear opening and closing air cylinder, the first pulling piece, the second pulling piece are controlled to be translated backward, forward synchronously to avoid formation sewing position, so that material pulling and folding assembly structure is more simple, transmission relationship is simplified, folding action is more smooth, accurate and controllable, reduces wear and tear, effectively reduces failure rate, and, tool replacement becomes more easy and fast, and practicality is strong.

[0040] Provide a kind of open bag sewing machine, including frame, the frame is provided with the frame pressing device of the kind of self folding function on;The frame is provided with X-axis translation drive mechanism, and the X-axis translation drive mechanism drives the frame pressing device of the kind of self folding function relative to the frame displacement along X-axis.

[0041] Specifically, in the embodiment, a kind of open bag sewing machine of the frame pressing device of the kind of self folding function is taken as example to be described, the open bag sewing machine is mainly suitable for the opening and sewing of garment product, and it includes:

[0042] Frame 10;The frame 10 is provided with workbench surface 11 and first tray locking mechanism 12, the workbench surface 11 is sequentially provided with sewing station one 111 and open bag station 112 from left to right, and the first tray locking mechanism 12 is arranged corresponding to the sewing station one 111;

[0043] Sewing tray one 20;The sewing tray one 20 is located on the workbench surface 11 and is arranged corresponding to the sewing station one 111, in 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 surface 11;

[0044] 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, and other cutting devices such as a cutter cutting device can also be used.

[0045] An outer pressing frame device 40 is automatically displaced between the first sewing station 111 and the bag opening station 112. The outer pressing frame device 40 includes a pressing frame 41 and 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 is displaced 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 are synchronously displaced in the first sewing station 111.

[0046] A first sewing device 50 is arranged corresponding to the first sewing station 111.

[0047] 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 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 is displaced downward to make the locking groove 23 cover the first positioning column to lock the first sewing tray 20, and the locking block 422 is displaced upward to make the locking groove 23 disengage from the first positioning column to unlock the first sewing tray 20.

[0048] If the bag opening sewing machine is provided with only one sewing device 50, the sewing machine head, it can only be used for one-time sewing operation, such as bag opening and sewing operation of the false bag.

[0049] Further, the bag opening sewing machine further comprises a sewing tray 2 60 and a sewing device 2 70 to form a bag opening sewing machine with double sewing machine heads, which is usually used for opening and sewing real bags, thus requiring two-time sewing; of course, the bag opening sewing machine with double sewing machine heads can also be used for one-time sewing by using one of the sewing machine heads in actual use, such as using the bag opening cutting device 30 and the sewing device 1 50 to meet the bag opening and sewing operation of the false bag, that is, the bag opening sewing machine with double sewing machine heads can meet the different use requirements of real bags and false bags.

[0050] The workbench surface 1 1 is further provided with a sewing station 2 1 13, which is located on the left and right sides of the bag opening station 1 1 12, respectively. The outer pressure frame device 40 can automatically displace the bag opening station 1 1 12, the sewing station 1 1 1 1, and the sewing station 2 1 1 13. Generally, it is displaced from the bag opening station 1 1 12 to the sewing station 1 1 1 1 to perform the first-time sewing, and then it is displaced from the sewing station 1 1 1 1 to the sewing station 2 1 1 13 to perform the second-time sewing. After the sewing is completed, it can be discharged on the right side of the sewing station 2 1 1 13 or returned to the bag opening station 1 1 12 for discharge. The third tray locking mechanism 1 4 is further provided on the rack 1 0 and corresponds to the sewing station 2 1 1 13. The sewing tray 2 60 is located on the workbench surface 1 1 and corresponds to the sewing station 2 1 1 13. In the first state, the sewing tray 2 60 is locked by the third tray locking mechanism 1 4, so that the sewing tray 2 60 is fixed on the workbench surface 1 1.

[0051] The sewing device 2 70 corresponds to the sewing station 2 1 1 13.

[0052] When the outer pressure frame device 40 is displaced to the sewing station 2 1 1 13, the third tray locking mechanism 1 4 is unlocked in the second state, and the second tray locking mechanism 4 2 locks the sewing tray 2 60, so that the sewing tray 2 60 and the outer pressure frame device 40 are fixed to each other to displace synchronously in the sewing station 2 1 1 13.

[0053] 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.

[0054] 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.

[0055] The automatic folding mechanism 43 includes a plug-in piece assembly 431 and a material pulling and folding assembly 432.

[0056] 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.

[0057] The material pulling and flanging assembly 432 is arranged on the pressing frame 41. The material pulling and flanging assembly 432 includes a first material pulling and flanging assembly 432 and a second material pulling and flanging assembly 432. The first material pulling and flanging assembly includes a first pressing piece 4321 and a first pulling piece 4322. The first pressing piece 4321 is arranged above the first pulling piece 4322. The first pulling piece 4322 is provided with left and right extending first material passing grooves 4322' for extending into one of the inserting pieces 4311 and inserting the bag opening edge on one side (for example, the rear side) into the first material passing grooves 4322'. The second material pulling and flanging assembly includes a second pressing piece 4323 and a second pulling piece 4324. The second pressing piece 4323 is arranged above the second pulling piece 4324. The second pulling piece 4324 is provided with left and right extending second material passing grooves (not shown in the figure) for extending into the other inserting piece 4311 and inserting the bag opening edge on the other side (for example, the front side) into the second material passing grooves. 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. 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. The first pressing piece 4321 and the first pulling piece 4322 are driven to move backward (reset to move forward). The second pressing piece 4323 and the second pulling piece 4324 are driven to move forward (reset to move backward). In actual operation, the first pulling piece 4322 and the second pulling piece 4324 are synchronously pulled backward and forward, respectively. 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. Each of the left and right sides of the U-shaped structure has a longitudinal connecting strip 1. Eight vertical guide grooves 412 are arranged on the pressing frame 41. The eight vertical guide grooves 412 are arranged side by side along the left and right spacing. The longitudinal connecting strips 1 are arranged one by one corresponding to the vertical guide grooves 412. This is beneficial to the precise flanging operation. In addition, the front and rear opening and closing air cylinders are arranged in left and right groups. The longitudinal connecting strips are connected to the corresponding front and rear opening and closing air cylinders. This is beneficial to the driving balance. Figure 10 and Figure 11As shown, the two sets of front and rear opening and closing cylinders A1 on the left and right outer sides are used to connect the longitudinal connecting strips 1 at the left and right ends of the first pull tab 4322 and the second pull tab 4324, while the two sets of front and rear opening and closing cylinders A2 on the left and right inner sides are used to connect the longitudinal connecting strips 1 at the left and right ends of the first pressure plate 4321 and the second pressure plate 4323. Among the eight vertical guide grooves 412, the inner bottom surface of the four vertical guide grooves 412 on the left and right outer sides is lower than the inner bottom surface of the four vertical guide grooves 412 on the left and right inner sides. The bottom surface of the longitudinal connecting strips at the left and right ends of the first pull tab 4322 and the second pull tab 4324 is in contact with the inner bottom surface of the four vertical guide grooves 412 on the left and right outer sides, while the longitudinal connecting strips at the left and right ends of the first pressure plate 4321 and the second pressure plate 4323 are in contact with the inner bottom surface of the four vertical guide grooves 412 on the left and right inner sides. The rear end of the longitudinal connecting strip is detachably connected to the opening and closing claws of the corresponding front and rear opening and closing cylinders, and its front and rear positions can be adjusted. Its stacked connecting pieces can be designed with friction surfaces to provide greater friction, which is beneficial to the stability of the stacked assembly.

[0058] Additionally, a cover plate 4101 is typically detachably provided on the top of the pressure frame 41. Both the cover plate 4101 and the pressure frame 41 are provided with corresponding bag opening clearance grooves 411. The first pressure piece 4321, the first pull piece 4322, the second pressure piece 4323, and the second pull piece 4324 all extend into the gap between the cover plate 4101 and the pressure frame 41, serving to shield, protect, and position the bag, preventing dust from entering and facilitating stable and reliable forward and backward telescopic movements.

[0059] The workflow of the pocket-opening sewing machine described in this embodiment is as follows:

[0060] Step 1, as follows Figure 1 As 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).

[0061] Step 2: The bag-opening and cutting device 30 cuts a slit in the fabric.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] Step 6, as follows Figure 3As shown, the second sewing is performed at the second sewing station 113; since the third tray locking mechanism 14 automatically releases the locking of the second sewing tray 60 when the outer pressing frame device 40 is displaced to the second sewing station 113, the second tray locking mechanism 42 locks the second sewing tray 60, so that the second sewing tray 60 and the outer pressing frame device 40 are fixed to each other and can be synchronously displaced at the second sewing station 113, so as to better meet the sewing processing requirement, the positioning effect of the fabric is good, and the sewing yield and precision are improved.

[0066] After the sewing is completed, the fabric can be unloaded at the right side of the second sewing station 113, or the outer pressing frame device 40 returns to the bag opening station 112 to unload.

[0067] If only bag opening and one-time sewing operation is required, the working process of the bag opening and sewing machine includes steps 1-4, and then step 5 is changed to that the outer pressing frame device 40 is displaced from the first sewing station 111 to the bag opening station 112 to unload.

[0068] It can be seen that in the embodiment, the sewing tray is designed to have two states for switching use, is locked by the first tray locking mechanism 12 on the rack 10 to be fixed on the workbench 11, and is locked by the second tray locking mechanism 42 of the outer pressing frame device 40 to be synchronously displaced at the first sewing station 111, so that an additional cloth bag stacking area is not required, the displacement stroke is shortened, the operation efficiency is effectively improved, the traditional cloth bag conveying mechanism is omitted, the machine is simplified, and the control reliability of the machine is improved. Compared with the traditional technology, in the utility model, only half of the circular stroke is required to complete one-time sewing operation, and only one circular stroke is required to complete two-time sewing operation, and both are shortened by 50%.

[0069] The design focus of the utility model lies in that the first pressing piece and the second pressing piece are connected to a set of front and rear opening and closing air cylinders, the first pulling piece and the second pulling piece are connected to another set of front and rear opening and closing air cylinders, the first pressing piece and the second pressing piece are controlled by the set of front and rear opening and closing air cylinders to be synchronously pulled backward and forward to pull material, the first pulling piece and the second pulling piece are controlled by the other set of front and rear opening and closing air cylinders to be synchronously translated backward and forward to avoid forming sewing positions, so that the pulling and folding edge assembly structure is simpler, the transmission relationship is simplified, the folding edge action is smoother and more accurate and controllable, wear is reduced, the failure rate is effectively reduced, replacement of tools is more convenient and fast, and the utility model has high practicability.

[0070] The above merely describes the preferred embodiment of the present application, and is not intended to limit the technical scope of the present application in any way. Any slight modification, equivalent change, and modification made according to the technical essence of the present application shall still fall within the scope of the technical scheme of the present application.

Claims

1. A frame pressing device with automatic edge folding function, comprising a frame pressing device and an automatic edge folding mechanism; characterized in that, The automatic folding mechanism comprises a tab assembly and a material pulling and folding assembly; The tab assembly comprises two tabs capable of automatic lifting; The material pulling and folding assembly is arranged on the pressing frame; the material pulling and folding assembly comprises a first pressing piece, a first pulling piece, a second pressing piece and a second pulling piece; the first pressing piece is located above the first pulling piece; the first pulling piece is provided with a first material passing groove for one of the tabs to extend into; the second pressing piece is located above the second pulling piece and in front of the first pressing piece; the second pulling piece is provided with a second material passing groove for the other tab to extend into; the first pressing piece and the second pressing piece are connected to a set of front and rear opening and closing air cylinders; the first pulling piece and the second pulling piece are connected to another set of front and rear opening and closing air cylinders.

2. The frame pressing device with a hemming function according to claim 1, characterized in that, The pressing frame is connected with a first lifting base; the first lifting base is connected with a first lifting driving unit; the first lifting driving unit is installed on a translation base; the first lifting driving unit is drivingly connected to the first lifting base, so that the pressing frame is lifted along the Z axis relative to the translation base along with the first lifting base; a second lifting driving unit is arranged on the first lifting base; the second lifting driving unit is drivingly connected with a second lifting base; 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; the first Y-axis translation driving unit is drivingly connected with an inner pressing frame.

3. The frame pressing apparatus with a hemming function according to claim 2, wherein The two tabs are connected with a second Y-axis translation driving unit; the second Y-axis translation driving unit is installed on a third lifting base; the second Y-axis translation driving unit drives the two tabs to move along the Y axis; the third lifting base is connected with a third lifting driving unit; the third lifting driving unit is installed on the first lifting base; the third lifting driving unit drives the third lifting base to move along the Z axis relative to the first lifting base.

4. The frame pressing apparatus with a hemming function according to claim 1, wherein The first pressing piece, the first pulling piece, the second pressing piece and the second pulling piece are all designed in a U-shaped structure; the left and right sides of each of the first pressing piece, the first pulling piece, the second pressing piece and the second pulling piece are provided with a longitudinal connecting strip; eight vertical guide grooves are arranged on the pressing frame; the eight vertical guide grooves are arranged side by side along the left-right interval; the longitudinal connecting strips are arranged one by one in correspondence with the eight vertical guide grooves; meanwhile, the front and rear opening and closing air cylinders are arranged in left and right groups; the longitudinal connecting strips are connected to the corresponding front and rear opening and closing air cylinders.

5. The frame press device with a hemming function according to claim 4, characterized in that, The left and right groups of front and rear opening and closing air cylinders on the left and right outer sides are connected to the longitudinal connecting strips at the left and right ends of the first pulling piece and the second pulling piece respectively; the left and right groups of front and rear opening and closing air cylinders on the left and right inner sides are connected to the longitudinal connecting strips at the left and right ends of the first pressing piece and the second pressing piece respectively.

6. The frame press device with a hemming function according to claim 4, characterized in that, The first pressing piece, the first pulling piece, the second pressing piece and the second pulling piece are all provided with a front end cutter; the left and right ends of the front end cutter are detachably connected to the front ends of the corresponding longitudinal connecting strips; the first material passing groove and the second material passing groove are arranged on the corresponding front end cutters.

7. The frame press device with a hemming function according to claim 2, characterized in that, A tray locking mechanism is arranged on the first lifting base to be fixed with a sewing tray of a sewing station.

8. The frame press device with a hemming function according to claim 1, characterized in that, The top of the pressing frame is detachably provided with a cover plate, and the cover plate and the pressing frame are correspondingly provided with bag opening avoiding grooves.

9. The frame press device with a hemming function according to claim 5, wherein, In the 8 vertical guide grooves, the inner bottom surfaces of the 4 vertical guide grooves on the left and right outer sides are lower than the inner bottom surfaces of the 4 vertical guide grooves on the left and right inner sides, the bottom surfaces of the longitudinal connecting strips at the left and right ends of the first pulling piece and the second pulling piece are correspondingly in contact with the inner bottom surfaces of the 4 vertical guide grooves on the left and right outer sides, and the longitudinal connecting strips at the left and right ends of the first pressing piece and the second pressing piece are correspondingly in contact with the inner bottom surfaces of the 4 vertical guide grooves on the left and right inner sides.

10. An open bag sewing machine comprising a frame, characterized in that, The rack is provided with the pressing frame device with the folding edge function as claimed in any one of claims 1 to 9; The rack is provided with an X-axis translation driving mechanism, and the X-axis translation driving mechanism drives the pressing frame device with the folding edge function to displace along the X-axis relative to the rack.

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