Zipper box automatic sewing machine

Abstract

The invention relates to the technical field of bag sewing, and provides an automatic zipper box sewing machine used for solving the problem that manual flanging operation is unsafe. The automatic zipper box sewing machine comprises a rack, an operation table top is arranged on the rack, a sewing machine is arranged on the operation table top, and a sewing guide block is arranged on a machine base of the sewing machine; the sewing guide block is detachably arranged on a machine base of the sewing machine, a positioning protrusion is arranged at the position, located below a needle head of the sewing machine, of the sewing guide block in an upward protruding mode, a sewing channel is vertically formed in the positioning protrusion in a penetrating mode, and the front end face and the rear end face of the positioning protrusion are arc-shaped faces adapting to corners of an external extrusion frame. A flanging block is arranged on the side, close to the inner side face of the sewing machine body, of the sewing guide block, an arc-shaped turning face is arranged on the outer side face of the flanging block, a sewing opening is formed in the flanging block in an up-down penetrating mode, and a first driving structure is arranged on the rack.

Description

Technical Field

[0001] The invention relates to the technical field of bag sewing, and in particular to an automatic sewing machine for zipper cases. Background Art

[0002] The zipper case is a type of luggage, mainly composed of two semi-enclosed cases, an extruded frame sewn on the edge of the case, and a zipper sewn on the extruded frame. The specific combination structure of the case, the extruded frame, and the zipper can be found in the Chinese invention patent application with application publication number CN118979347A. A combination of the case 1, the extruded frame 2, and the zipper 3 is as follows: Figure 1 As shown, an upper clamping groove 4 and a lower clamping groove 5 are formed at the upper end of the extrusion frame with openings facing opposite directions, and a sewing guide groove 6 is opened upward from the lower end surface of the extrusion frame. The extrusion frame is clamped on the edge of the box body through the lower clamping groove, and the zipper is clamped on the extrusion frame through the upper clamping groove. When sewing, the upper flap 7 of the upper clamping groove needs to be opened to allow the needle of the sewing machine to vertically pass through the zipper and the box body into the sewing guide groove and sew continuously. After sewing, the upper flap clamps the zipper again and covers the sewing track.

[0003] Currently, the sewing between the box body, the extrusion frame and the zipper relies on manual work, which requires manual opening of the upper flap. Since the upper flap is made of soft plastic, the position where it is manually opened needs to be close to the needle to prevent the upper flap from obstructing the needle during sewing, which results in a high risk of operation.

[0004] This case arises to solve the above problems. Summary of the invention

[0005] Therefore, in view of the above-mentioned problems, the present invention proposes an automatic sewing machine for zipper boxes for solving the problem of unsafe manual flanging operation.

[0006] In order to solve the above technical problems, the solution adopted by the present invention is: an automatic sewing machine for zipper boxes, comprising a frame, an operating table is arranged on the frame, and a sewing machine is arranged on the operating table, characterized in that: a sewing guide block for extending into the sewing guide groove of the external extrusion frame for positioning and guiding the extrusion frame is arranged on the base of the sewing machine, the sewing guide block is detachably arranged on the base of the sewing machine, the sewing guide block is located below the needle head of the sewing machine and protrudes upwards and is provided with a positioning protrusion for extending into the sewing guide groove of the external extrusion frame, the left and right side surfaces of the positioning protrusion are in contact with the inner wall of the sewing guide groove of the external extrusion frame, a sewing channel connected to the sewing port on the base of the sewing machine is vertically penetrated in the positioning protrusion, and the front and rear end surfaces of the positioning protrusion are arc-shaped surfaces adapted to the corners of the external extrusion frame; The sewing guide block is provided with a flanging block on one side of the inner side of the sewing machine body, and the outer side of the flanging block is provided with an arc-shaped flip surface for inserting into the upper clamping groove of the external extrusion frame and guiding the upper flap to flip outward, and the flanging block is provided with a sewing opening for the sewing machine needle to move up and down for sewing when the arc-shaped flip surface continues to flip up the external upper flap, and the frame is provided with a device for driving the flanging block to move so that the arc-shaped flip surface is inserted into the flipped external upper flap, and slides back and forth while inserting to ensure that the arc-shaped flip surface enters the external The frame is provided with a first driving structure for driving the flange block to reset in the upper clamping groove of the extrusion frame; the frame is provided with a suture cutting structure for replacing manual automatic cutting of the suture thread when the sewing machine needle is lifted after suturing is completed; the frame is provided with a zipper feeding structure for replacing manual automatic insertion of the zipper into the upper clamping groove of the external extrusion frame after the upper flap is turned up; the frame is provided with a zipper cutting structure for replacing manual automatic cutting of the zipper; the frame is provided with a zipper feeding structure for supplying the zipper of a set length to the zipper feeding structure.

[0007] Further improvement is that: the first driving structure includes a first bracket, a first telescopic driving member, and a second telescopic driving member, the fixed end of the first bracket is fixedly arranged on the frame or the casing of the sewing machine, the shell of the first telescopic driving member is fixedly arranged on the free end of the first bracket, and the telescopic rod can be telescopically moved in the front-to-back direction, the shell of the second telescopic driving member is fixedly arranged on the shell of the first telescopic driving member, and the telescopic rod can be telescopically moved in the left-to-right direction, and the flanging block is fixedly arranged on the telescopic rod of the second telescopic driving member.

[0008] A further improvement is that the suture cutting structure includes a second bracket, a first electric scissors, and a third telescopic driving member, the fixed end of the second bracket is fixedly arranged on the frame or the casing of the sewing machine, the shell of the third telescopic driving member is fixedly arranged on the free end of the second bracket, the first electric scissors is fixedly arranged on the telescopic rod of the third telescopic driving member, and the first electric scissors is obliquely arranged diagonally above the suture guide block.

[0009] Further improvements are: the zipper feeding structure includes a feeding plate, a third bracket, a fourth telescopic driving member, and a driving rod, the fixed end of the third bracket is fixedly set on the frame, the shell of the fourth telescopic driving member is fixedly set on the free end of the third bracket, the driving rod is fixedly set on the telescopic rod of the fourth telescopic driving member, the feeding plate is located above the sewing guide block and is obliquely fixed on the driving rod, the feeding plate is provided with a feeding channel for the external zipper to pass through, and the feeding end of the feeding plate is provided with a clamping structure for damping the clamping pull to prevent the zipper from sliding.

[0010] A further improvement is that the clamping structure includes an upper clamping roller, a lower clamping roller, a support rod, a lower limit block, and an upper limit block, the support rod is fixedly arranged on the driving rod, a fixing rod is arranged on the support rod along a direction parallel to the zipper conveying direction, the lower clamping roller is rotatably arranged on the fixing rod, lower limit blocks for limiting the slippage of the lower clamping roller are arranged on both sides of the lower clamping roller on the fixing rod, the fixed end of the lower limit block is fixedly arranged on the fixing rod, a roller is passed through the upper clamping roller, and a roller is located on the roller Upper limit blocks are provided on fixed sleeves on both sides of the upper clamping roller, and the fixed ends of the upper limit blocks are fixedly set on the roller, and the middle parts of the two upper limit blocks are in contact with the inner walls of the middle parts of the two lower limit blocks. A damping shaft is provided between the upper limit blocks and the lower limit blocks to keep the upper clamping roller and the lower clamping roller in a clamped state at all times, one end of the damping shaft is fixedly penetrated through the middle part of the lower limit block, and the other end is fixedly penetrated through the middle part of the upper limit block, and a feeding gap is left between the upper clamping roller and the lower clamping roller for the zipper to be squeezed through.

[0011] A further improvement is that a guide structure is provided between the third bracket and the loading plate to guide the loading plate to drive the zipper to be inserted into the upper clamping groove of the external extrusion frame in a straight line and smoothly.

[0012] Further improvement is: the guide structure includes a mounting plate, a guide plate, a guide rail, a slider, and a driving block, the mounting plate is fixedly set on the free end of the third bracket, the shell of the fourth telescopic driving member is fixedly set on the mounting plate, the slider is fixedly set on the mounting plate, the guide rail is fixedly set on the guide plate, the guide rail is slidably set on the slider, one end of the driving block is fixedly set on the telescopic rod of the fourth telescopic driving member, and the other end is fixedly set on the guide plate, and the driving rod is fixedly set on the guide plate.

[0013] Further improvement is: the zipper cutting structure includes a fourth bracket, a fifth telescopic drive member, and a second electric scissors, the fixed end of the fourth bracket is fixedly arranged on the frame, the shell of the fifth telescopic drive member is fixedly arranged on the free end of the fourth bracket, the telescopic rod is telescopically movable in the left and right directions, and the shell of the second electric scissors is fixedly arranged on the telescopic rod of the fifth telescopic drive member.

[0014] A further improvement is that the zipper feeding structure includes a mounting seat, a pair of discharge rollers for actively discharging the zipper, and a plurality of guide wheels for guiding the free end of the zipper to the zipper feeding structure, the pair of discharge rollers are rotatably arranged on the mounting seat, and the plurality of guide wheels are horizontally or obliquely arranged on the frame along the zipper conveying path, and the frame is provided with a second driving structure for driving the discharge clamping rollers to rotate synchronously.

[0015] A further improvement is that the second driving structure includes a motor, two rotating rods, and two synchronous gears, the two ends of the rotating rods are rotatably set on the mounting seat, the unloading rollers are fixedly sleeved on the two rotating rods, the two synchronous gears are fixedly sleeved on the rotating rods, the two synchronous gears are meshed with each other for transmission, the housing of the motor is fixedly set on the mounting seat, and the rotating shaft of the motor is synchronously rotatably connected with one of the rotating rods.

[0016] A further improvement is that sliders are fixedly provided at both ends of the rotating rod located above, a sliding groove is provided on the mounting seat for the slider to slide up and down, an elastic member is provided in the sliding groove above the slider, the upper end of the elastic member is provided at the top of the sliding groove, and the lower end is provided on the upper surface of the slider.

[0017] A further improvement is that the frame is provided with a tensioning structure for utilizing gravity to tension the pre-released zipper to prevent it from falling off the guide wheel when the unloading roller pre-releases a zipper of a set length.

[0018] Further improvement is: the tensioning structure includes two tensioning wheels, two tensioning slide rails, a tensioning slider, and at least one anti-slip tensioning wheel, the two tensioning wheels are rotatably fixed on the frame, the tensioning slide rail is located below the tensioning wheel and is vertically fixed on the frame, the tensioning slider is slidably set on the tensioning slide rail, a connecting rod is fixedly set between the two anti-slip tensioning wheels, and the middle part of the connecting rod is fixedly set on the tensioning slider.

[0019] A further improvement is that the anti-slip tensioning wheel includes two limiting plates, two limiting rods, and a roller. The two limiting rods are located between the two limiting plates and are fixedly arranged at the upper and lower ends of the limiting plates, respectively. The roller is sleeved on the limiting rod at the upper end. An anti-slip guide opening is formed between the roller and the limiting rod at the lower end for the external zipper to pass through and limit the zipper from detaching.

[0020] A further improvement is that: a loading tray for placing the external zipper roll is arranged on the frame, and a sleeve rod for the external zipper reel to be sleeved is vertically arranged in the middle of the loading tray.

[0021] By adopting the above technical solution, the beneficial effects of the present invention are: In this case, the positioning protrusion on the sewing guide block cooperates with the sewing guide groove of the extrusion frame, so that the box body can rotate smoothly, and the front and rear surfaces of the positioning protrusion are arc-shaped surfaces that can well adapt to the arc-shaped corners of the extrusion frame.

[0022] In this case, the flanging block replaces manual flanging to improve the safety of the sewing operation. The arc-shaped flanging surface set on the flanging block is conducive to guiding the upper flap of the extrusion frame to flip outward. The flanging block is inserted into the clamping groove on the extrusion frame by sliding and inserting, avoiding the situation where the upper flap fails to flanging or is not in the right position.

[0023] A further beneficial effect is that the suture cutting structure is used to automatically cut the suture, and the operator safety is improved without manual cutting. The electric scissors are driven by the cylinder to approach the suture, so that the electric scissors automatically cut the suture, which is beneficial to adjust and control the active position of the electric scissors so that the cutting position of the electric scissors is as close as possible to the needle of the sewing machine, so as to shorten the length of the thread, improve the utilization rate of the suture, and reduce the cost of consumables.

[0024] Further beneficial effects are: the zipper can be automatically placed into the upper clamping groove of the extrusion frame through the zipper feeding structure, replacing manual zipper feeding, improving operational safety, and improving the level of automatic sewing of the box. The upper clamping roller and the lower clamping roller limit the autonomous movement of the zipper, which is conducive to positioning the zipper head and facilitating the zipper to be fed into the upper clamping groove of the external extrusion frame. During the sewing process, the zipper is pulled and sewn on the extrusion frame as the box rotates. The zipper is pulled by the rotation of the box, so that the zipper pulling length is synchronized with the length of the box flipping sewing path. Under the clamping of the upper clamping roller and the lower clamping roller, it is conducive to ensuring that the zipper is always in a flattened state during the sewing process, thereby improving the zipper sewing quality.

[0025] A further beneficial effect is that the guide structure provided between the third bracket and the loading plate limits the movement of the loading plate in the left and right directions, which is conducive to guiding the loading plate to quickly and smoothly insert the zipper into the upper clamping groove of the external extrusion frame.

[0026] A further beneficial effect is that the zipper is automatically cut by the second electric scissors, thereby improving the automation level of box sewing, so that the manual clamping and driving of the box can be completely replaced by automated equipment such as robots, further improving the automation level of box sewing.

[0027] A further beneficial effect is that the frame is also provided with a zipper feeding structure capable of supplying a zipper of a set length. The zipper is clamped on the clamping roller. Before the previous section of the zipper is cut off, the clamping roller first rotates to drive the zipper to feed. After the zipper is fed to the set length, the clamping roller stops rotating. By pre-discharging the zipper, if the tail section of the zipper separates from the discharging roller during the discharging process and the remaining zipper is scattered on the ground, the staff or the detection sensor can find it at the first time and stop sewing the box in time to avoid sewing defective boxes that need to be reworked. It is conducive to manual rapid response that the remaining zipper is insufficient for sewing and the zipper roll needs to be replaced in time to avoid sewing the remaining zipper waste to the box. The total length of the zipper winding after pre-discharging is controlled by controlling the lowest position of the tensioning slider sliding down the tensioning slide rail and the position of the guide wheel. The total length is approximately equal to twice the length of the sewn zipper, so that the length of the zipper after the tail end of the zipper separates from the discharging roller and is scattered is sufficient to sew the current box.

[0028] A further beneficial effect is that the tensioning structure arranged on the frame will utilize its own gravity to descend and tension the pre-released zipper when the pre-released zipper of a set length is pre-released on the unloading roller, and will utilize its own weight to counteract the traction force of the zipper during the consumption of the pre-released zipper to keep the zipper tensioned, thereby preventing the pre-released zipper from being entangled or scattered and affecting human walking.

[0029] The zipper passes through a tensioning wheel, two anti-slip tensioning wheels, another tensioning force, and then around other guide wheels, and finally passes through the feeding channel of the feeding plate. When the clamping rollers are pre-discharging, the tensioning slider descends along the tensioning slide rail to tension the zipper to prevent the zipper from detaching from the wire wheel. When the tail of the zipper is about to detach from the rotating feeding roller or has already detached from the rotating feeding roller, it indicates that the remaining length of the zipper is not enough to sew the next box after the current box is sewn. It is necessary to manually replace the zipper roll and remove the remaining zipper waste immediately, which is conducive to avoiding the situation where the zipper of insufficient length is sewn to the box and needs to be removed for rework, thereby improving production efficiency.

[0030] A further beneficial effect is that the clamping structure provided in the present case actively clamps the front end of the zipper, thereby preventing the cut zipper from sliding along the loading plate and shortening its length, and preventing the loading plate from being unable to deliver the zipper head into the upper clamping groove of the external extrusion frame, which is beneficial to improving the positioning accuracy of the zipper when it is fed into the extrusion frame and improving the zipper sewing quality.

[0031] A further beneficial effect is that the loading tray and sleeve rod for placing the zipper material roll arranged on the frame are conducive to shortening the pulling distance of the zipper and preventing the pulled zipper from affecting the walking of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is an illustration of the prior art described in the background technology.

[0033] Figure 2 It is a three-dimensional structural schematic diagram of the automatic sewing machine for zipper boxes according to an embodiment of the present invention.

[0034] Figure 3 It is a front structural schematic diagram of the automatic sewing machine for zipper boxes according to an embodiment of the present invention.

[0035] Figure 4 The figure is a side structural diagram of the automatic sewing machine for zipper boxes according to an embodiment of the present invention.

[0036] Figure 5 The figure is a schematic diagram of the structure of the automatic sewing machine for zipper boxes according to an embodiment of the present invention viewed from above.

[0037] Figure 6 The present invention is a schematic structural diagram of a sewing guide block, a flanging block and a sewing thread cutting structure in an automatic sewing machine for zipper boxes according to an embodiment of the present invention.

[0038] Figure 7 The present invention is a schematic structural diagram of a zipper feeding structure in an automatic sewing machine for a zipper box according to an embodiment of the present invention.

[0039] Figure 8 The present invention is a schematic structural diagram of a zipper feeding structure and a clamping structure in an automatic sewing machine for a zipper box according to an embodiment of the present invention.

[0040] Fig. 9 The present invention is a schematic structural diagram of a zipper feeding structure in an automatic sewing machine for a zipper box according to an embodiment of the present invention.

[0041] Fig.10 yes Figure 2 A magnified view of the local structure at point A.

[0042] Fig.11 It is a three-dimensional structural schematic diagram of the automatic sewing machine for zipper boxes according to an embodiment of the present invention. DETAILED DESCRIPTION

[0043] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0044] Reference Figures 1 to 11The embodiment of the present invention discloses an automatic sewing machine for a zipper box, comprising a frame 10, an operating table 11 being provided on the frame 10, a sewing machine 12 being provided on the operating table 11, a sewing end of the sewing machine 12 protruding from the operating table 11, a sewing guide block 13 for extending into a sewing guide groove of an external extrusion frame for positioning and guiding the extrusion frame being provided on the base of the sewing machine 12, the sewing guide block 13 being bolt-disassembled and arranged on the base of the sewing machine 12, so as to facilitate replacement of different sewing guide blocks 13 according to different types of boxes. The suturing guide block 13 is located below the needle of the sewing machine 12 and is upwardly protruded with a positioning protrusion 131 for extending into the suturing guide groove of the external extrusion frame. The left and right sides of the positioning protrusion 131 are in contact with the inner wall of the suturing guide groove of the external extrusion frame. A sewing channel 132 connected to the sewing port on the base of the sewing machine 12 is vertically penetrated in the positioning protrusion 131. The front and rear end surfaces of the positioning protrusion 131 are arc-shaped surfaces 133 adapted to the corners of the external extrusion frame. The suturing guide block 13 is close to the sewing machine 12. A flanging block 14 for replacing manual flanging is provided on one side of the inner side of the body, and an arc-shaped flip surface 141 for inserting into the upper clamping groove of the external extrusion frame and guiding the upper flap to flip outward is provided on the outer side of the flanging block 14. The highest point of the arc-shaped flip surface 141 is higher than the upper surface of the flanging block 14, so as to increase the height of the arc-shaped flip surface 141 and increase the flipping arc. The flanging block 14 is provided with a sewing opening 142 for the needle of the sewing machine 12 to move up and down for sewing when the arc-shaped flip surface 141 continuously flips up the external upper flap. When sewing, the needle of the sewing machine 12 sequentially passes through the sewing opening 142 and the sewing channel 132 for sewing. The frame 10 is provided with a first driving structure 15 for driving the flanging block 14 to move so that the arc-shaped flip surface 141 is inserted into the flipped external upper flap, slides forward and backward while inserting to ensure that the arc-shaped flip surface 141 enters the upper clamping groove of the external extrusion frame, and drives the flanging block 14 to reset.

[0045] The first driving structure 15 includes a first bracket 151, a first telescopic driving member 152, and a second telescopic driving member 153. The first telescopic driving member 152 and the second telescopic driving member 153 are air cylinders, oil cylinders, or electric push rods. The fixed end of the first bracket 151 is fixedly arranged on the frame 10 or the housing of the sewing machine 12, the shell of the first telescopic driving member 152 is fixedly arranged on the free end of the first bracket 151, and the telescopic rod is telescopically movable in the front-to-back direction, the shell of the second telescopic driving member 153 is fixedly arranged on the shell of the first telescopic driving member 152, and the telescopic rod is telescopically movable in the left-to-right direction, and the flanging block 14 is fixedly arranged on the telescopic rod of the second telescopic driving member 153.

[0046] The frame 10 is provided with a suture cutting structure 16 for replacing manual automatic cutting of the suture when the needle of the sewing machine 12 is lifted after suturing. The suture cutting structure 16 includes a second bracket 161, a first electric scissors 162 or a blade with a V-shaped cut, and a third telescopic driving member 163, wherein the third telescopic driving member 163 is a cylinder or an oil cylinder or an electric push rod. The fixed end of the second bracket 161 is fixedly arranged on the frame 10 or the housing of the sewing machine 12, the shell of the third telescopic driving member 163 is fixedly arranged on the free end of the second bracket 161, the first electric scissors 162 or the blade is fixedly arranged on the telescopic rod of the third telescopic driving member 163, and the first electric scissors 162 or the blade is obliquely arranged above the suture guide block 13.

[0047] The frame 10 is provided with a zipper feeding structure 17 for automatically inserting a zipper into the upper clamping groove of the external extrusion frame after the upper flap is turned up instead of manually. The zipper feeding structure includes a feeding plate 171, a third bracket 172, a fourth telescopic driving member 173, and a driving rod 175. The fixed end of the third bracket 172 is fixedly arranged on the frame 10, the shell of the fourth telescopic driving member 173 is fixedly arranged on the free end of the third bracket 172, the driving rod 175 is fixedly arranged on the telescopic rod of the fourth telescopic driving member 173, the feeding plate 171 is located above the sewing guide block 13 and is obliquely fixed on the driving rod 175. The feeding plate 171 is provided with a feeding channel 174 for the external zipper to pass through. The feeding plate 171 is composed of an upper plate and a lower plate. The upper plate and the lower plate close the feeding channel 174 to prevent the zipper from upwardly detaching from the feeding plate 171. The feeding plate 171 is composed of an upper plate and a lower plate, and the upper plate and the lower plate close the feeding channel 174 to prevent the zipper from upwardly escaping from the feeding plate 171. The feeding plate 171 can also be replaced with a structure such as a clamping roller that can clamp the zipper without affecting the zipper feeding.

[0048] The feeding end of the loading plate 171 is provided with a clamping structure 27 for damping and clamping to prevent the zipper from sliding. The clamping structure 27 includes an upper clamping roller 271, a lower clamping roller 272, a support rod 273, a lower limit block 274, and an upper limit block 275. The support rod 273 is fixedly arranged on the driving rod 175. A fixing rod 276 is arranged on the support rod 273 along the direction parallel to the zipper conveying direction. The lower clamping roller 272 is rotatably arranged on the fixing rod 276. The fixing rod 276 is provided with lower limit blocks 277 for limiting the sliding of the lower clamping roller 272 on both sides of the lower clamping roller 272. The fixed end of the lower limit block 274 is fixedly arranged on the fixing rod. A roller 278 is passed through the upper clamping roller 271. The roller 278 is located at the lower limit block 277 on the upper limit block 274. Upper limit blocks 275 are fixedly sleeved on both sides of the upper clamping roller 271, and the fixed ends of the upper limit blocks 275 are fixedly set on the roller 278. The middle parts of the two upper limit blocks 275 are in contact with the inner walls of the middle parts of the two lower limit blocks 274. A damping shaft 281 is provided between the upper limit blocks 275 and the lower limit blocks 274 to keep the upper clamping roller 271 and the lower clamping roller 272 in a clamped state at all times. One end of the damping shaft 281 is fixedly penetrated through the middle part of the lower limit block 274, and the other end is fixedly penetrated through the middle part of the upper limit block 275. A feeding gap 279 is left between the upper clamping roller 271 and the lower clamping roller 272 for the zipper to be squeezed through. The upper limit block 275 and the lower limit block 274 on the same side are respectively fixed with a handle 280 for driving the upper clamping roller 271 and the lower clamping roller 272 to release or clamp the zipper with the damping shaft 281 as the rotation center, and a connecting rod for increasing the rotation stability is respectively arranged between the two ends of the upper limit block 275 and the two ends of the lower limit block 274. The upper limit block 275 and the lower limit block 274 are driven by the handle 280 to rotate with the damping shaft 281 as the rotation center, so as to increase the feeding gap 279 between the upper clamping roller 271 and the lower clamping roller 272 to facilitate the zipper to pass through. After the zipper passes through, the upper limit block 275 and the lower limit block 274 are driven by the handle 280 to rotate upward so that the upper clamping roller 271 and the lower clamping roller 272 clamp the zipper, thereby limiting the autonomous movement of the zipper.

[0049] After the zipper is sewn, the fourth telescopic drive member 173 drives the feeding plate 171 to move away from the needle, extending the exposed length of the zipper between the feeding plate 171 and the needle, so as to facilitate the cutting of the zipper. After the zipper is cut, the tail of the front section of the zipper continues to sew with the extrusion frame as the box rotates, and the rear zipper head is clamped by the upper and lower clamping rollers to maintain the exposed length; after the extrusion frame of the next box is clamped into the positioning protrusion 131 and the flanging block 14 completes the flanging, the fourth telescopic drive member 173 drives the feeding plate 171 to move toward the needle, so that the zipper head exposed at the discharge end of the feeding plate 171 enters the sewing position for sewing.

[0050] A guide structure 18 is provided between the third bracket 172 and the loading plate 171 for guiding the loading plate 171 to drive the zipper to be inserted into the upper clamping groove of the external extrusion frame in a straight line and smoothly. The guide structure 18 comprises a mounting plate 181, a guide plate 182, a guide rail 183, a slider 214, and a driving block 185. The mounting plate 181 is fixedly provided on the free end of the third bracket 172, the housing of the fourth telescopic driving member 173 is fixedly provided on the mounting plate 181, the slider 214 is fixedly provided on the mounting plate 181, the guide rail 183 is fixedly provided on the guide plate 182, the guide rail 183 is slidably provided on the slider 214, one end of the driving block 185 is fixedly provided on the telescopic rod of the fourth telescopic driving member 173, and the other end is fixedly provided on the guide plate 182, and the driving rod is fixedly provided on the guide plate 182. The guide rail 183 and the slider 214 may also be replaced by a guide rod and a guide cylinder sleeved on the guide rod.

[0051] The frame 10 is provided with a zipper cutting structure 19 for replacing manual automatic zipper cutting. The zipper cutting structure 19 includes a fourth bracket 191, a fifth telescopic driving member 192, a second electric scissors 193 or a sharp blade, and the fourth telescopic driving member 173 is a cylinder or an oil cylinder or an electric push rod. The fixed end of the fourth bracket 191 is fixedly arranged on the frame 10, the shell of the fifth telescopic driving member 192 is fixedly arranged on the free end of the fourth bracket 191, and the telescopic rod is telescopically movable in the left and right directions, and the shell or the blade of the second electric scissors 193 is fixedly arranged on the telescopic rod of the fifth telescopic driving member 192.

[0052] The frame 10 is provided with a zipper feeding structure 20 for supplying a zipper of a set length to the zipper feeding structure. The zipper feeding structure 20 comprises a mounting seat 201, a pair of feeding rollers 202 for actively feeding the zipper, and a plurality of guide wheels 203 for guiding the free end of the zipper to the zipper feeding structure. The pair of feeding rollers 202 is rotatably arranged on the mounting seat 201, and a plurality of guide wheels 203 are horizontally or obliquely arranged on the frame 10 along the zipper conveying path. The frame 10 is provided with a second driving structure for driving the feeding rollers to rotate synchronously.

[0053] The second driving structure includes a motor 211, two rotating rods 212, and two synchronous gears 213. The two ends of the rotating rod 212 are rotatably arranged on the mounting seat 201. The two ends of the rotating rod 212 located at the top are fixed with sliders 214. The mounting seat 201 is provided with a slide groove 215 for the slider 214 to slide up and down. An elastic member 216 is arranged above the slider 214 in the slide groove 215. The elastic member 216 is a spring. The upper end of the elastic member 216 It is arranged at the top of the slide groove 215 and the lower end is arranged on the upper surface of the slider 214. The unloading roller pair 202 is fixedly sleeved on the two rotating rods 212 respectively. The two synchronous gears 213 are fixedly sleeved on the rotating rods 212 respectively. The two synchronous gears 213 are meshed with each other for transmission. The shell of the motor 211 is fixedly arranged on the mounting seat 201. The rotating shaft of the motor 211 is connected to the rotating rod 212 through a belt 217 and a pulley 218 for synchronous rotation.

[0054] The frame 10 is provided with a tensioning structure 22 for tensioning the pre-released zipper by gravity when the unloading roller 202 pre-releases a set length of zipper, and maintaining the tension of the zipper by gravity of the tensioning slider during the consumption of the pre-released zipper. The tensioning structure 22 includes two tensioning wheels 221, a tensioning slide rail 222, a tensioning slider 223, and at least one anti-slip tensioning wheel 23. The two tensioning wheels 221 are rotatably fixedly arranged on the frame 10, the tensioning slide rail 222 is located below the tensioning wheel 221 and is vertically fixedly arranged on the frame 10, the tensioning slider 223 is slidably arranged on the tensioning slide rail 222, and the anti-slip tensioning wheel 23 is rotatably arranged on the tensioning slider 223. There are two anti-slip tensioning wheels 23 , and a connecting rod 24 is fixedly arranged between the anti-slip tensioning wheels 23 . The middle part of the connecting rod 24 is fixedly arranged on the tensioning slider 223 . Extending the length of the connecting rod 24 is conducive to increasing the pre-release length interval range of the pre-release zipper.

[0055] The anti-slip tensioning wheel 23 includes two limiting plates 231, two limiting rods 232, and a roller 233. The two limiting rods 232 are located between the two limiting plates 231 and are fixedly arranged at the upper and lower ends of the limiting plates 231, respectively. The roller 233 is sleeved on the limiting rod 232 at the upper end. An anti-slip guide port 234 is formed between the roller 233 and the limiting rod 232 at the lower end for the external zipper to pass through and to limit the zipper from detaching.

[0056] The frame 10 is provided with a loading tray 25 for placing the external zipper roll, and a sleeve rod 26 for sleeve the external zipper reel is vertically arranged in the middle of the loading tray 25 .

[0057] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.

Claims

1. A zipper box automatic sewing machine, comprising a frame, an operating table is arranged on the frame, and a sewing machine is arranged on the operating table, characterized in that: The base of the sewing machine is provided with a sewing guide block for extending into the sewing guide groove of the external extrusion frame for positioning and guiding the extrusion frame. The sewing guide block is detachably arranged on the base of the sewing machine. The sewing guide block is located below the needle of the sewing machine and protrudes upwards. A positioning protrusion for extending into the sewing guide groove of the external extrusion frame is provided. The left and right side surfaces of the positioning protrusion are in contact with the inner wall of the sewing guide groove of the external extrusion frame. A sewing channel connected to the sewing port on the base of the sewing machine is vertically penetrated in the positioning protrusion. The front and rear end surfaces of the positioning protrusion are arc-shaped surfaces adapted to the corners of the external extrusion frame. The sewing guide block is provided with a flanging block on one side of the inner side surface close to the sewing machine body, and the outer side surface of the flanging block is provided with an arc-shaped flip surface for inserting into the upper clamping groove of the external extrusion frame and guiding the upper flap to flip outward, the highest point of the arc-shaped flip surface is higher than the upper surface of the flanging block, and the flanging block is provided with a sewing opening for the sewing machine needle to move up and down for sewing when the arc-shaped flip surface continues to flip up the external upper flap, and the frame is provided with a device for driving the flanging block to move so that the arc-shaped flip surface is inserted into the flipped external upper flap and slides back and forth while inserting. The frame is provided with a first driving structure for ensuring that the arc-shaped flip surface enters the upper clamping groove of the external extrusion frame and driving the flange block to reset; the frame is provided with a suture cutting structure for replacing manual automatic cutting of the suture thread when the sewing machine needle is lifted after suturing is completed; the frame is provided with a zipper feeding structure for replacing manual automatic insertion of the zipper into the upper clamping groove of the external extrusion frame after the upper flap is flipped up; the frame is provided with a zipper cutting structure for replacing manual automatic cutting of the zipper; the frame is provided with a zipper feeding structure for supplying the zipper of a set length to the zipper feeding structure.

2. The zipper box automatic sewing machine according to claim 1, characterized in that: The first driving structure includes a first bracket, a first telescopic driving member, and a second telescopic driving member. The fixed end of the first bracket is fixedly arranged on the frame or the casing of the sewing machine, the shell of the first telescopic driving member is fixedly arranged on the free end of the first bracket, and the telescopic rod can be telescopically moved in the front-to-back direction, the shell of the second telescopic driving member is fixedly arranged on the shell of the first telescopic driving member, and the telescopic rod can be telescopically moved in the left-to-right direction, and the flanging block is fixedly arranged on the telescopic rod of the second telescopic driving member.

3. The zipper box automatic sewing machine according to claim 1, characterized in that: The suture cutting structure includes a second bracket, a first electric scissors, and a third telescopic driving member. The fixed end of the second bracket is fixedly arranged on the frame or the casing of the sewing machine, the shell of the third telescopic driving member is fixedly arranged on the free end of the second bracket, the first electric scissors is fixedly arranged on the telescopic rod of the third telescopic driving member, and the first electric scissors is obliquely arranged diagonally above the suture guide block.

4. The zipper box automatic sewing machine according to claim 1, characterized in that: The zipper feeding structure includes a feeding plate, a third bracket, a fourth telescopic driving member, and a driving rod. The fixed end of the third bracket is fixedly arranged on the frame, the shell of the fourth telescopic driving member is fixedly arranged on the free end of the third bracket, and the driving rod is fixedly arranged on the telescopic rod of the fourth telescopic driving member. The feeding plate is located above the sewing guide block and is obliquely fixed on the driving rod. The feeding plate is provided with a feeding channel for the external zipper to pass through, and a clamping structure for damping the clamping pull to prevent the zipper from sliding is provided on the feeding end of the feeding plate.

5. The zipper box automatic sewing machine according to claim 4, characterized in that: The clamping structure includes an upper clamping roller, a lower clamping roller, a support rod, a lower limit block, and an upper limit block, the support rod is fixedly arranged on the driving rod, a fixing rod is arranged on the support rod along the direction parallel to the zipper conveying direction, the lower clamping roller is rotatably arranged on the fixing rod, lower limit blocks for limiting the slippage of the lower clamping roller are arranged on both sides of the lower clamping roller on the fixing rod, the fixed end of the lower limit block is fixedly arranged on the fixing rod, a roller is passed through the upper clamping roller, and a roller is arranged on both sides of the upper clamping roller on the roller The side fixed sleeve is provided with an upper limit block, the fixed end of the upper limit block is fixedly arranged on the roller, the middle parts of the two upper limit blocks are fitted with the inner walls of the middle parts of the two lower limit blocks, and a damping shaft is arranged between the upper limit block and the lower limit block to keep the upper clamping roller and the lower clamping roller in a clamped state at all times, one end of the damping shaft is fixedly penetrated through the middle part of the lower limit block, and the other end is fixedly penetrated through the middle part of the upper limit block, and a feeding gap is left between the upper clamping roller and the lower clamping roller for the zipper to be squeezed through.

6. The zipper box automatic sewing machine according to claim 4 or 5, characterized in that: A guide structure is provided between the third bracket and the loading plate to guide the loading plate to linearly and smoothly drive the zipper to be inserted into the upper clamping groove of the external extrusion frame.

7. The zipper box automatic sewing machine according to claim 6, characterized in that: The guide structure includes a mounting plate, a guide plate, a guide rail, a slider, and a driving block. The mounting plate is fixedly arranged on the free end of the third bracket, the shell of the fourth telescopic driving member is fixedly arranged on the mounting plate, the slider is fixedly arranged on the mounting plate, the guide rail is fixedly arranged on the guide plate, the guide rail is slidably arranged on the slider, one end of the driving block is fixedly arranged on the telescopic rod of the fourth telescopic driving member, and the other end is fixedly arranged on the guide plate, and the driving rod is fixedly arranged on the guide plate.

8. The zipper box automatic sewing machine according to claim 1, characterized in that: The zipper cutting structure includes a fourth bracket, a fifth telescopic driving member, and a second electric scissors. The fixed end of the fourth bracket is fixedly arranged on the frame, the shell of the fifth telescopic driving member is fixedly arranged on the free end of the fourth bracket, and the telescopic rod is telescopically movable in the left and right directions. The shell of the second electric scissors is fixedly arranged on the telescopic rod of the fifth telescopic driving member.

9. The zipper box automatic sewing machine according to claim 1, characterized in that: The zipper feeding structure includes a mounting seat, a pair of feeding rollers for actively feeding the zipper, and a plurality of guide wheels for guiding the free end of the zipper to the zipper feeding structure. The pair of feeding rollers are rotatably arranged on the mounting seat, and the plurality of guide wheels are horizontally or obliquely arranged on the frame along the zipper conveying path. The frame is provided with a second driving structure for driving the feeding clamping rollers to rotate synchronously.

10. The zipper box automatic sewing machine according to claim 9, characterized in that: The second driving structure includes a motor, two rotating rods, and two synchronous gears. The two ends of the rotating rods are rotatably set on the mounting seat, the unloading rollers are fixedly sleeved on the two rotating rods, and the two synchronous gears are fixedly sleeved on the rotating rods. The two synchronous gears are meshed with each other for transmission. The housing of the motor is fixedly set on the mounting seat, and the rotating shaft of the motor is synchronously rotatably connected with one of the rotating rods.

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