Continuous sewing equipment for multi-layer hemline

Abstract

The utility model discloses a continuous sewing device for multilayer hemlines in the technical field of clothing manufacture, which comprises a feeding box, a jumper spring rod, a pressing plate, a base, a cloth roll and a sewing machine, cloth is automatically stacked and fed through the feeding box and the cloth roll, and the sewing machine and the jumper spring rod are linked with a counter for counting. According to the device, a sewing template is not used for sewing, the operation of aligning the laminated cloth is not needed, the operation of cutting each piece of sewn cloth one by one is not needed, the cloth is directly used as a raw material by using a winding drum, a continuous sewing process is formed, and production line type sewing operation is formed; compared with the prior art, the full-automatic ballet skirt sewing machine has the advantages that personnel are no longer taken as the core, equipment is designed for automatic production, working efficiency is greatly improved, automatic continuous discharging, feeding and sewing of the skirt hemline are achieved, one-time forming is achieved, the sewing difficulty of the ballet skirt is effectively lowered, the manufacturing process is simplified, and the requirement for the proficiency of personnel is greatly lowered.

Description

Technical Field

[0001] This utility model relates to the field of garment technology, and in particular to a continuous sewing device for multi-layer skirts. Background Technology

[0002] A ballet tutu is a costume worn by women in ballet performances. It includes leotards and trousers for male dancers, and tutus, stockings, and ballet shoes for female dancers.

[0003] This type of ballet tutu features a close-fitting bodice that connects to a bell-shaped skirt that extends past the knees. The skirt is made of several layers of white tulle and paired with light red stockings, allowing dancers to showcase leaps and footwork. In 1880, the ballet tutu was shortened and became known as the ballet kilt, which became the standard tutu for ballet. This type of ballet tutu consists of 4 to 5 layers of silk pleats, attached to a vest of a corresponding size.

[0004] The biggest challenge in sewing this ballet skirt is the hem, because the material is stiffer than regular clothing. However, the hem needs to have pleats sewn along its upper edge, and the pleats at the upper edge also create pleats at the lower edge, which then spread out in a pleated shape.

[0005] This type of skirt requires multiple layers of fabric of varying widths to be stacked and sewn together with pleats, making it an extremely difficult task even in the garment industry. Unlike other skirts, this ballet skirt is not only made of stiff material, making it difficult to stack pleats, but it also requires the fabric to be cut first, with each layer cut to the same length. When sewing, the different widths of fabric are stacked in sequence, and the stacked layers need to be aligned on one side before pleating and sewing, which further increases the difficulty of sewing.

[0006] Cutting and comparing fabric takes up a lot of time. In this conventional sewing method, the operation of folding the fabric alone wastes a lot of time, resulting in slow processing speed and low efficiency.

[0007] Cutting ballet tutu fabric is a complicated process. The fabric needs to be laid flat on a sewing table, and then scissors are used to cut it while comparing it to a ruler. The cutting method is difficult to align, and it is easy to cut the fabric and cause it to bend. This makes the production of ballet tutu more difficult in terms of cutting, folding, pleating and sewing. As a result, it is not only difficult, but also inefficient.

[0008] Based on this, the present invention designs a continuous sewing device for multi-layer skirts to solve the above problems. Utility Model Content

[0009] The purpose of this invention is to provide a continuous sewing device for multi-layered skirts. This device does not use sewing templates, nor does it require aligning and overlapping fabrics, nor does it require cutting each piece of fabric individually. Instead, the fabric is directly used as raw material in a roll, forming a continuous sewing process and a production line-style sewing operation. It no longer relies on personnel as the core, but rather designs the equipment as an automated production line, greatly improving work efficiency. It allows for automated and continuous material feeding, sewing, and skirt production in one go. Personnel only need to cut the skirts into individual pieces afterward, effectively reducing the difficulty of sewing ballet skirts, simplifying the production process, and greatly reducing the skill requirements of personnel.

[0010] This utility model is implemented as follows: a continuous sewing device for multi-layer skirts, comprising:

[0011] Feed box, jumper spring rod, pressure plate, base, fabric roll and sewing machine;

[0012] The feed box, jumper spring rod, base, and sewing machine are all stably mounted on a workbench, which is a stable platform with a horizontal top. The jumper spring rod and base are arranged in sequence forward on the front side of the sewing machine, and the feed box is mounted on the rear side of the sewing machine.

[0013] The feeding box is an open-top box with a closed bottom plate. A long, narrow through hole is horizontally opened at the bottom of the front side wall of the feeding box. Multiple partitions are vertically arranged inside the feeding box along the left-right direction. The partitions are evenly spaced and arranged in parallel. The feeding box is divided into multiple separate cavities along the front-back direction by the partitions. Each partition is mounted on the bottom plate without contacting the other. The gap between the bottom plate and the bottom of the partition forms a long, narrow opening that connects the front and back.

[0014] The fabric roll is a roll of long strips of fabric. Each individual cavity in the feeding box is equipped with a fabric roll. A mounting shaft is detachably and stably installed on the axis of the fabric roll. The fabric roll is mounted in the feeding box by rotating through the mounting shaft. The mounting shaft is installed in the feeding box in the left-right direction.

[0015] Each strip of fabric from each fabric roll is laid flat against the base plate, and each strip of fabric from each fabric roll extends forward through the opening below its front partition. The strips of fabric from each fabric roll are overlapped and laid under the strips of its front fabric roll, and the strips of fabric from multiple fabric rolls are pulled together and then pulled on the sewing station of the sewing machine.

[0016] The jumper spring rod is the jumper mechanism of the sewing machine. The jumper spring rod is a telescopic rod. A contact switch is provided on the extension path of the jumper spring rod, and the contact switch is connected to a counter.

[0017] Both the pressure plate and the base are long, straight rods. The base is fixed to the top of the workbench in the left-right direction. The pressure plate rotates and covers the top of the base via a pivot. The pressure plate and the base can be loosely clamped to the upper and lower sides of the sewn fabric at the rear end of the sewing machine.

[0018] A limiting groove is provided on the pressure plate, which penetrates the upper and lower surfaces of the pressure plate. A blade is slidably arranged in the limiting groove along the front-to-back direction. A guide groove is provided on the top of the base along the front-to-back direction. The blade is clamped and slidably arranged in the limiting groove and the guide groove.

[0019] Furthermore, the feeding box is also equipped with multiple pressure rods and baffles;

[0020] The pressure rod is a smooth stainless steel straight rod. Multiple pressure rods are horizontally mounted in the inner cavity of the feeding box along the left and right direction. A pressure rod is mounted on the front side of each partition and a pressure rod is also horizontally mounted on the outer front end of the feeding box.

[0021] Each fabric roll unfolds and slides below its front pressure bar, and the overlapping strips of fabric rolls slide forward between the front pressure bar and the bottom plate.

[0022] Both ends of each of the pressure rods are rotatably mounted on the side wall of the feeding box via bearings. The pressure rods are mounted above the base plate, and the height interval between the pressure rods and the feeding box does not exceed 0.5cm.

[0023] The baffle is a flexible arc-shaped plate. A baffle is glued to the top of each partition. The upper end of each baffle bends and extends backward. Each baffle covers the top of the fabric roll behind it. The left and right sides of the fabric roll are within the coverage area of ​​the baffle.

[0024] The weight of the baffle plate does not exceed 50 grams.

[0025] Furthermore, a through hole is opened on the internal axis of the fabric roll, and a clamping cylinder is tightly inserted into the through hole of the fabric roll. The clamping cylinder is a PVC cylinder, and the clamping cylinder is interference-fitted with the inner hole of the fabric roll. Both ends of the clamping cylinder extend out of the outside of the fabric roll. The clamping cylinder is a round tube, and a mounting shaft is rotatably installed inside the clamping cylinder through a feeding bearing.

[0026] The width of the fabric wound on each of the fabric rolls is different, and the fabric rolls are continuous strips of fabric.

[0027] Furthermore, the counter is a digital counter, and an indicator light is also provided on the counter. Both the counter and the indicator light are connected to a contact switch.

[0028] A spring sheet is provided on the outside of the contact switch, and the spring sheet is disposed between the jumper spring rod and the contact switch.

[0029] Furthermore, both the pressure plate and the base are PVC block-shaped long rods, and the blade has two vertical sides with cutting edges, and the cutting edge of the blade is a curved arc surface;

[0030] A slider and a push block are fixed to the top of the blade. The slider is connected between the push block and the blade. The push block is a rubber block structure and extends out of the pressure plate without contact.

[0031] The slider is slidably disposed inside the limiting groove, and the slider slides against the inner wall of the limiting groove via a dovetail groove.

[0032] The guide groove is a vertically opened elongated groove, and the depth of the guide groove is greater than the height of the blade, that is, the lower end of the blade does not contact the bottom of the guide groove.

[0033] The guide groove is clearance-fitted with the front and rear sides of the blade, with a clearance of no more than 1mm.

[0034] Furthermore, the opening height gap h between the partition and the bottom plate is 2cm, and the opening height at the bottom of the front side wall of the feeding box is also 2cm.

[0035] Furthermore, multiple slots are provided at the top of the vertical sidewalls on both sides of the feeding box. Each slot is a U-shaped groove with an opening at the top, and a U-shaped pipe clamp is installed inside each slot.

[0036] The number of slots on the left and right sides of the feeding box is the same, and their positions are symmetrically arranged. The axes of the symmetrically arranged slots coincide on the same horizontal plane.

[0037] The beneficial effects of this utility model are: 1. The sewing machine is connected to the front side of the feeding box, and an automatic piece counting device is added. A jumper spring rod is set up, which can clearly see the fabric position of the jumper, and facilitate the confirmation and inspection of the single-piece interval point of the skirt. Thus, this device forms an efficient sewing production line. Before the sewing is completed, it is no longer necessary to align the fabric and cut it. Through this production method, the fabric is sewn into a continuous skirt-shaped long strip, which saves the step of cutting single pieces and the operation of aligning the fabric one by one.

[0038] 2. This utility model designs a feeding box, which completely changes the raw material supply method in garment manufacturing. Through the feeding box and the unfolding of the fabric roll, it is no longer necessary to cut single pieces of fabric or align multiple pieces of fabric one by one. Instead, multiple rolls of fabric are stacked together and aligned once, and can be continuously sewn afterward. There is no longer a complicated operation of aligning the fabric. The rolls can be unfolded and sewn directly afterward, which effectively improves the efficiency of subsequent sewing.

[0039] 3. This device adds a pressure plate and a base in the final process. The base supports the continuous skirt that has been sewn together, and the pressure plate presses down and clamps the skirt. The device is equipped with a blade, which can cut the fabric in a stable clamped state, thereby ensuring that the cutting path conforms to the skirt design size, simplifying the operation, reducing the cutting difficulty, and optimizing the overall garment manufacturing process. Attached Figure Description

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0041] Figure 1 This is a side view of the overall production line structure of this utility model;

[0042] Figure 2 This is a top view of the overall production line structure of this utility model;

[0043] Figure 3 This is a schematic diagram of a single fabric roll structure of this utility model;

[0044] Figure 4 This is a schematic diagram of the structure of the pressure plate and the base in the clamping state of this utility model;

[0045] Figure 5 This is a schematic diagram of the structure of the pressure plate of this utility model in the open state;

[0046] Figure 6 This is a schematic diagram of the side cutting edge of the blade of this utility model in the internal state of the pressure plate and the base;

[0047] Figure 7 This is a schematic diagram of the blade structure of this utility model;

[0048] Figure 8 This is a schematic diagram of the empty state of the feeding box of this utility model;

[0049] Figure 9 This is a schematic diagram of the front structure of the sewing machine and contact switch of this utility model.

[0050] The attached diagram lists the components represented by each number as follows:

[0051] 1-Feeding box, 11-Divider, 12-Pressure bar, 13-Blocking plate, 14-Base plate, 2-Jumper spring rod, 21-Contact switch, 22-Counter, 23-Indicator light, 24-Spring plate, 3-Pressure plate, 31-Base, 32-Blade, 33-Push block, 34-Guide groove, 35-Slider, 36-Rotating shaft, 37-Limiting groove, 4-Fabric roll, 41-Frame mounting shaft, 42-Feeding bearing, 43-Clip cylinder, 44-Clip buckle, 5-Sewing machine, 51-Workbench. Detailed Implementation

[0052] Please see Figures 1 to 9 As shown, this utility model provides a continuous sewing device for multi-layer skirts. To better understand the above technical solution, the following will describe the above technical solution in detail with reference to the accompanying drawings and specific embodiments.

[0053] In a specific embodiment of the technical solution of this utility model:

[0054] It includes a feed box 1, a jumper spring rod 2, a pressure plate 3, a base 31, a fabric roll 4, and a sewing machine 5;

[0055] The feed box 1, the jumper spring rod 2, the base 31 and the sewing machine 5 are all stably mounted on a workbench 51. The workbench 51 is a stable platform with a horizontal top. The jumper spring rod 2 and the base 31 are arranged in front of the sewing machine 5, and the feed box 1 is mounted on the rear of the sewing machine 5.

[0056] The feeding box 1 is a box with an open top and a closed bottom plate 14. A long strip-shaped through hole is horizontally opened at the bottom of the front side wall of the feeding box 1. Multiple partitions 11 are vertically arranged in the left-right direction inside the feeding box 1. The multiple partitions 11 are evenly spaced and arranged in parallel in the front-back direction. The feeding box 1 is divided into multiple separate cavities in the front-back direction by the partitions 11. Each partition 11 is mounted on the bottom plate 14 without contacting each other. The gap between the bottom plate 14 and the bottom of the partition 11 forms a long strip-shaped opening that is connected in the front and back.

[0057] The height gap h between the partition 11 and the bottom plate 14 is 2cm, and the bottom opening height of the front side wall of the feeding box 1 is also 2cm, that is, the partition 11 and the front baffle of the feeding box 1 have the same height and shape.

[0058] The feeding box 1 is also equipped with multiple pressing rods 12 and baffle plates 13;

[0059] The pressure rod 12 is a smooth stainless steel straight rod. Multiple pressure rods 12 are horizontally mounted in the inner cavity of the feeding box 1 in the left and right direction. A pressure rod 12 is mounted on the front side of each partition 11. A pressure rod 12 is also horizontally mounted on the outer front end of the feeding box 1.

[0060] The fabric of each fabric roll 4 is slid under the front pressure bar 12. All the fabric strips of the fabric rolls 4 are pressed under the front pressure bar 12, and the fabric strips of the fabric rolls 4 are slid forward between the front pressure bar 12 and the bottom plate 14.

[0061] Both ends of each pressure rod 12 are mounted on the side wall of the feeding box 1 via bearings. The pressure rod 12 is mounted above the base plate 14, and the height interval between the pressure rod 12 and the feeding box 1 does not exceed 0.5cm.

[0062] The baffle plate 13 is a flexible arc-shaped plate, which can be a smooth thin sheet made of PVC. As long as the thickness is thin, its weight can be controlled within a low range. The function of the baffle plate 13 is simply to prevent the front end of the fabric from being pulled too fast, which would cause the subsequent fabric roll 4 to rotate too fast, thereby making the fabric roll loose. The baffle plate 13 is to prevent the fabric from loosening too fast and limit its release speed. Adhesive sheets can also be glued to the baffle plate 13 to increase the weight, or a thinner baffle plate 13 can be replaced to reduce the weight. Each partition 11 has a baffle plate 13 glued to its top. The upper end of each baffle plate 13 bends and extends backward. Each baffle plate 13 covers the top of the fabric roll 4 behind it. The left and right sides of the fabric roll 4 are within the coverage area of ​​the baffle plate 13.

[0063] The weight of the baffle plate 13 is no more than 50 grams. It can press down the stretched and loose fabric, so that the fabric cannot be stretched and loosened too much, and ensure that the fabric remains attached to the fabric roll 4 while being pulled.

[0064] The fabric roll 4 is a roll of long strips of fabric. Multiple fabric rolls 4 are mounted on a detachable stabilizing frame inside the feeding box 1. Each individual cavity inside the feeding box 1 is equipped with a fabric roll 4. A mounting shaft 41 is detachably and stably mounted on the axis of the fabric roll 4. The fabric roll 4 is mounted in the feeding box 1 by rotating the mounting shaft 41. The mounting shaft 41 is mounted in the feeding box 1 in the left and right direction.

[0065] Multiple locking slots 44 are also provided on the top of the vertical sidewalls on both sides of the feeding box 1. The locking slots 44 are U-shaped grooves with top openings. Each locking slot 44 is also equipped with a U-shaped pipe clamp. The mounting shaft 41 is elastically clamped by the pipe clamp. The mounting shaft 41 and the pipe clamp can be interference fit.

[0066] The number of locking slots 44 on the left and right sides of the feeding box 1 is the same, and their positions are symmetrically arranged. The axes of the symmetrically arranged locking slots 44 coincide on the same horizontal plane. Thus, the mounting shaft 41 is installed and clamped through the locking slots 44, and the mounting shaft 41 is horizontally erected in the left and right direction through the locking slots 44.

[0067] A through hole is opened on the internal axis of the fabric roll 4. A clamping cylinder 43 is tightly inserted into the through hole of the fabric roll 4. The clamping cylinder 43 is a PVC cylinder. The clamping cylinder 43 and the inner hole of the fabric roll 4 are interference fit. Even if it is not clamped tightly, it does not matter. This connection will not affect the feeding of the fabric roll 4 when it starts to rotate. The two ends of the clamping cylinder 43 extend out of the outside of the fabric roll 4. The clamping cylinder 43 is a round tube. The two ends of the clamping cylinder 43 are equipped with feeding bearings 42. The outer ring of the feeding bearing 42 is clamped to the clamping cylinder 43. The inner ring of the feeding bearing 42 is equipped with a mounting shaft 41. The clamping cylinder 43 can rotate relative to the mounting shaft 41 through the feeding bearing 42.

[0068] The width of the fabric wound on each fabric roll 4 is different, and the fabric roll 4 is a continuous strip of fabric, which is the same as the structure of a toilet paper roll. The paper tube is also inside the through hole of the fabric roll 4. The paper tube has a certain elasticity. As long as the size design is appropriate, the clamping tube 43 can be stably clamped to the fabric roll 4, and it can also be pulled apart by force.

[0069] Each strip of fabric from fabric roll 4 is laid flat on the base plate 14. Each strip of fabric from fabric roll 4 extends forward through the opening below its front partition 11. Each strip of fabric from fabric roll 4 is overlapped and laid under the strip of its front fabric roll 4. The strips of fabric from multiple fabric rolls 4 are stretched and pulled together at the sewing station of the sewing machine 5 after being stacked one on top of the other.

[0070] The jumper spring rod 2 is the jumper mechanism of the sewing machine 5. The jumper spring rod 2 is a telescopic rod. When the sewing machine 5 skips a stitch, the jumper spring rod 2 extends once with the skipping stitch action, and the jumper spring rod 2 retracts to its original position after the skipping stitch is completed. When there is no skipping stitch, the jumper spring rod 2 remains in the retracted state. A contact switch 21 is set on the extension path of the jumper spring rod 2, and the contact switch 21 is connected to the counter 22.

[0071] Counter 22 is a digital counter, and an indicator light 23 is also installed on counter 22. Both counter 22 and indicator light 23 are connected to contact switch 21. The circuit of counter 22 and indicator light 23 is a series circuit, and a battery is also installed in the circuit. When contact switch 22 is pressed to start, the circuit is connected. When spring plate 24 is released, contact switch 21 is de-energized. When spring plate 24 is not under external force, it is not in contact with contact switch 21, and contact switch 21 is in a normally open state.

[0072] A spring plate 24 is externally mounted on the contact switch 21, positioned between the jumper spring rod 2 and the contact switch 21. The contact switch 21 and counter 22 can be powered by a DC battery. The spring plate 24 is a copper electrode. When the jumper spring rod 2 extends forward once, the contact switch 22 is pressed and energized by the spring plate 24. At this time, the indicator light 23 connects to the external power supply once, completing one flashing cycle. The counter 22 is also energized once, completing one count. However, the counter 22 remains continuously energized, only incrementing the count when the contact switch 22 is energized. After the spring plate 24 loses pressure, it returns to its original position, no longer pressing the contact switch 21, thus de-energizing the contact switch 21.

[0073] Both the pressure plate 3 and the base 31 are long, straight rods. The base 31 is fixed to the top of the workbench 51 in the left-right direction. The pressure plate 3 rotates and covers the top of the base 31 through the pivot 36. The pressure plate 3 and the base 31 are connected in a guillotine-like structure. The pressure plate 3 and the base 31 can be loosely clamped on the upper and lower sides of the sewn fabric at the rear end of the sewing machine 5.

[0074] A limiting groove 37 is provided on the pressure plate 3, which penetrates the upper and lower surfaces of the pressure plate 3. A blade 32 is slidably disposed in the limiting groove 37 along the front-back direction. A guide groove 34 is provided on the top of the base 31 along the front-back direction. The guide groove 34 does not penetrate the bottom of the base 31, that is, the bottom of the base 31 is closed. The blade 32 is clamped and slidably disposed in the limiting groove 37 and the guide groove 34. Since the pressure plate 3 and the base 31 are arranged along the left-right direction, the blade 32 also slides and cuts along the left-right direction. The cutting edge of the blade 32 slides and cuts between the pressure plate 3 and the base 31.

[0075] Both the pressure plate 3 and the base 31 are PVC block-shaped long rods. The blade 32 has two vertical sides with cutting edges, and the cutting edges of the blade 32 are inwardly curved arc surfaces.

[0076] A slider 35 and a pusher 33 are fixed on the top of the blade 32. The slider 35 is connected between the pusher 33 and the blade 32. The pusher 33 is a rubber block structure and extends out above the pressure plate 3 without contact.

[0077] The slider 35 is slidably installed inside the limiting slide groove 37. The slider 35 and the inner wall of the limiting slide groove 37 are engaged and slid through a dovetail groove. Because of the dovetail groove, it can prevent separation and allow the slider 35 to slide in the left and right directions. That is, the inner wall of the limiting slide groove 37 has a dovetail groove, and the slider 35 has a protrusion in the front and back directions that matches the dovetail groove. The slider slides in the dovetail grooves on both sides of the inner wall of the limiting slide groove 37 through the protrusion. Therefore, both the pressure plate 3 and the base 31 are made of PVC, which allows for smooth sliding and is lightweight and wear-resistant.

[0078] The guide groove 34 is a vertically opened elongated groove. The depth of the guide groove 34 is greater than the height of the blade 32, that is, the lower end of the blade 32 does not contact the bottom of the guide groove 34.

[0079] The guide groove 34 and the front and rear sides of the blade 32 are clearance fit, with a clearance of no more than 1mm;

[0080] The sewn fabric can be laid flat on top of the base 31 and the guide groove 34 can be covered. Then, the pressure plate 3 can be pressed down on top of the base 31 through the rotating shaft 36, thereby pressing the spread fabric tightly. The contact surface between the pressure plate 3 and the base 31 can be covered with an anti-slip rubber pad to prevent the fabric from slipping.

[0081] Then, the blade 32 can slide in the guide groove 34 to cut the fabric and form individual skirt pieces. At this time, the skirt is still a fan-shaped piece of fabric. Then, the front and back sides of the fabric are sewn together to form a complete circular skirt.

[0082] It should be noted that:

[0083] 1. A typical ballet tutu consists of two parts: a vest and a skirt, each sewn separately. The vest is a very simple, standard piece, while the main difficulty lies in the skirt. Originally, the fabric was rolled up and cut to the designed size. The tailors then folded and aligned these pieces before sewing them individually. After sewing, the vest and skirt were joined together. Sewing the skirt is particularly intricate, as it's made from multiple pieces of fabric of varying widths. Therefore, the raw material needs to be pre-cut to different widths. Since the width of each piece is not significantly different, they are all cut from the same roll of fabric. First, the fabric of the same width is unfolded and cut into pieces of the same length according to the design. Then, measurements are taken and lines are drawn with a fabric pen. These same pieces of fabric are then cut into pieces of different widths, folded and aligned, and pleated before being sewn together. Finally, there is a final... In the previous process, every so often, the thread ends needed to be trimmed to ensure there were no burrs on the skirt hem. This made each step in the skirt production process quite cumbersome. This device completely transforms the piecemeal garment-making method into a production line design. Instead of cutting the fabric, it directly sews the fabric into continuous skirt hem strips. After sewing, the fabric is then cut into sections, greatly simplifying the cutting process. This cumbersome, repetitive, and unskilled cutting process is replaced by a feeding box. The fabric is unfolded into a stacked state, with each fabric roll 4 unfolded and stacked below the fabric strips unfolded from the front fabric roll 4. This creates multiple layers of fabric without cutting or cutting. Instead, the fabric is flattened and laid out by the partition 11 and the pressure rod 12, and then directly sewn. After sewing, it still forms a long, continuous pleated skirt hem, eliminating all the operations of stacking, cutting, and aligning the fabric. The entire process is automated.

[0084] 2. A unique problem encountered by this device is that after the skirt is sewn, it is difficult to accurately determine the cutting line of a single skirt piece due to the continuous long skirt hem. It is also impossible for personnel to count the pieces, resulting in the need to measure the cutting line for each cut. This device directly modifies the skip stitch mechanism of the sewing machine, exposing the skip stitch spring rod 2 externally. The sewing machine is set to skip stitches once or twice after sewing to the designed number of stitches, creating an unsewn gap in the fabric. The gap is the cutting point of a single skirt piece. This makes it easier for the operator to inspect and cut the single skirt piece. At the same time, through the design of the skip stitch spring rod 2, the spring plate 24 and the contact switch 21 are automatically activated, which in turn causes the counter 22 to count, and the indicator light 23 flashes once, making it easy for personnel to observe and operate.

[0085] 3. This device eliminates the need for measurement, marking, and cutting operations when cutting single-piece skirts. Furthermore, it is difficult to align the cuts of multi-layered, curled skirts using traditional scissors. This device directly lays the sewn continuous skirt flat and stretches it on the base 31, aligning the skipped stitch points with the rotating shaft 36, so that the cutting line of the skirt is aligned with the longitudinal alignment line of the limiting slide 37 and the guide slide 34. Then, the pressure plate 3 presses the skirt firmly onto the base 31, and the blade 32 cuts the aligned skirt. The cutting path is stable, and the skirt is also stable, thus ensuring a neat cut.

[0086] 4. Sewing machine 5 can be the JUkID DDL900C model, which has an automatic needle counting function. After reaching the set number of stitches, it can skip stitches. The needle breakage mechanism is the skip stitch mechanism. The skip stitch mechanism has a spring telescopic rod, which is the skip stitch spring rod 2 of this device. This device is a common part on existing sewing machines. The number of stitches and the number of skip stitches can be flexibly set by the user. This is also a common function of current sewing machines.

[0087] In use, the fabric is pre-rolled into a fabric roll 4 that meets sewing standards, and the width d of each fabric roll 4 is different, and the width of each fabric roll 4 is the same as the width of one layer of the skirt.

[0088] Then, all the fabric rolls 4 are fitted onto the clamping cylinder 43 and inserted securely. The mounting shaft 41 with the fabric rolls 4 fitted onto the clamping buckle 44 is then clamped onto the clamping buckle 44. The fabric of each fabric roll 4 is stretched out and passed through the front partition 11 and the pressure rod 12 from the bottom in sequence.

[0089] At the same time, the unfolded fabric of each roll of fabric 4 is pressed on top of the fabric extending from the back, so that each layer of fabric fits tightly together, while ensuring that one side edge of the fabric is aligned, that is, aligned with the edge of the fabric aligned with the sewing point of the sewing machine 5.

[0090] Therefore, when the feed box 1 is installed, its left or right inner wall needs to be aligned with the sewing point of the sewing machine 5, that is, the alignment of the internal fabric with the sewing point needs to be accurate.

[0091] The folded fabric is pulled forward and passed through the feed box 1, and pressed tightly at the sewing stitch of the sewing machine 5. Then the sewing machine 5 is started. After the sewing machine 5 sews the set number of stitches, it completes one skip stitch. When skipping stitch, the skip stitch spring rod 2 pops out and returns to its original position.

[0092] When the spring plate 24 is pushed once by the jumper spring rod 2, the contact switch 21 contacts the spring plate 24 and starts once. The counter 22 and the indicator light 23 are activated sequentially by the contact switch 21 to complete one count and flashing light, prompting the operator to cut in time and count the number of skirts.

[0093] Flip the pressure plate 3 upwards, and the person pulls the stitched skirt onto the base 31. Align the skipped stitch point with the guide groove 34, and then press down the pressure plate 3 to confirm that the skipped stitch point is also within the limiting groove 37. Keep the skipped stitch point in the same position, and then push the push block 33 upwards or downwards. The slider 35 slides in the dovetail groove on the inner side wall of the limiting groove 37 to ensure stable sliding.

[0094] Because the blade 32 has cutting edges on both sides of its sliding direction, it can cut from both sides, making it easy to cut the skirt hem.

[0095] Similarly, this device does not use the blade 32. The scissors can be directly inserted into the seam between the limiting slide groove 37 and the guide slide groove 34 to cut the skirt fabric. The operation is convenient.

[0096] At this point, the skirt hem is sewn. The only remaining step is to sew the cut edges together. Since the cut edges are straight and without pleats, simply sew along the straight line to form a circular hem. The operation is simple. Then, while sewing the bodice and skirt together on the sewing machine, add an elastic band along the seam line to create a layered, pleated effect. This device primarily simplifies the supply, stacking, alignment, sewing, and cutting of materials for multi-layered ballet skirts. It significantly optimizes the process of sewing multi-layered fabrics, especially those of varying sizes.

[0097] In this device, "front" refers to the direction of fabric travel, and "rear" refers to the original position of the fabric, i.e., the front end is the finished product end, and the rear end is the raw material end. "Left and right" refers to the left and right sides when the fabric is moving forward. The indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0098] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A continuous sewing device for multi-layered skirts, characterized in that, include: Feed box (1), jumper spring rod (2), pressure plate (3), base (31), fabric roll (4) and sewing machine (5); The feed box (1), the jumper spring rod (2), the base (31) and the sewing machine (5) are all stably mounted on a workbench (51). The workbench (51) is a stable platform with a horizontal top. The jumper spring rod (2) and the base (31) are arranged in front of the sewing machine (5) in sequence, and the feed box (1) is mounted on the rear side of the sewing machine (5). The feeding box (1) is a box with an open top. The bottom of the feeding box (1) is a closed base plate (14). A long strip-shaped through hole is horizontally opened at the bottom of the front side wall of the feeding box (1). Multiple partitions (11) are vertically arranged in the left-right direction inside the feeding box (1). The multiple partitions (11) are evenly spaced and arranged in parallel in the front-back direction. The feeding box (1) is divided into multiple separate cavities in the front-back direction by the partitions (11). Each partition (11) is mounted on the base plate (14) without contacting each other. The gap between the base plate (14) and the bottom of the partition (11) forms a long strip-shaped opening that connects the front and back. The fabric roll (4) is a roll of long strips of fabric. Each individual cavity in the feed box (1) is equipped with a fabric roll (4). A mounting shaft (41) is detachably and stably installed on the axis of the fabric roll (4). The fabric roll (4) is mounted in the feed box (1) by rotating through the mounting shaft (41). The mounting shaft (41) is installed in the feed box (1) in the left-right direction. The strips of each fabric roll (4) are laid flat on the base plate (14), the strips of each fabric roll (4) extend forward through the opening below the front partition (11), the strips of each fabric roll (4) are overlapped and laid under the strips of the front fabric roll (4), and the strips of multiple fabric rolls (4) are pulled up and down in sequence and then pulled on the sewing station of the sewing machine (5); The jumper spring rod (2) is the jumper mechanism of the sewing machine (5). The jumper spring rod (2) is a telescopic rod. A contact switch (21) is provided on the extension path of the jumper spring rod (2). The contact switch (21) is connected to a counter (22). The pressure plate (3) and the base (31) are both long straight rods. The base (31) is fixed on the top of the workbench (51) in the left and right direction. The pressure plate (3) is rotated and covered on the top of the base (31) through the pivot (36). The pressure plate (3) and the base (31) can be loosely clamped on the upper and lower sides of the fabric sewn at the rear end of the sewing machine (5). A limiting groove (37) is provided on the pressure plate (3), the limiting groove (37) penetrates the upper and lower surfaces of the pressure plate (3), and a blade (32) is slidably disposed in the limiting groove (37) along the front-back direction. A guide groove (34) is provided on the top of the base (31) along the front-back direction, and the blade (32) is clamped and slidably disposed in the limiting groove (37) and the guide groove (34).

2. The continuous sewing equipment for multi-layer skirts according to claim 1, characterized in that: The feeding box (1) is also equipped with multiple pressing rods (12) and baffle plates (13); The pressing rod (12) is a smooth stainless steel straight rod. Multiple pressing rods (12) are horizontally mounted in the inner cavity of the feeding box (1) in the left and right direction. A pressing rod (12) is mounted on the front side of each partition (11). A pressing rod (12) is also horizontally mounted on the outer front end of the feeding box (1). The fabric of each fabric roll (4) is slidably placed below its front pressure bar (12), and the fabric strips of the fabric roll (4) are slidably inserted forward between the front pressure bar (12) and the bottom plate (14). Each of the pressing rods (12) is mounted on the side wall of the loading box (1) by means of bearings at both ends. The pressing rods (12) are mounted above the bottom plate (14). The height interval between the pressing rods (12) and the loading box (1) does not exceed 0.5cm. The baffle (13) is a flexible arc-shaped plate. A baffle (13) is glued to the top of each partition (11). The upper end of each baffle (13) bends and extends to the rear. Each baffle (13) covers the top of the fabric roll (4) behind it. The left and right sides of the fabric roll (4) are within the coverage area of ​​the baffle (13). The weight of the baffle plate (13) does not exceed 50 grams.

3. The continuous sewing equipment for multi-layer skirts according to claim 1, characterized in that: A through hole is opened on the internal axis of the fabric roll (4). A clamping cylinder (43) is tightly inserted into the through hole of the fabric roll (4). The clamping cylinder (43) is a PVC cylinder. The clamping cylinder (43) and the inner hole of the fabric roll (4) are interference fit. Both ends of the clamping cylinder (43) extend out of the fabric roll (4). The clamping cylinder (43) is a round tube. The mounting shaft (41) is rotatably installed inside the clamping cylinder (43) through the feeding bearing (42). The width of the fabric wound on each of the fabric rolls (4) is different, and the fabric rolls (4) are continuous strips of fabric.

4. The continuous sewing equipment for multi-layer skirts according to claim 1, characterized in that: The counter (22) is a digital counter, and an indicator light (23) is also provided on the counter (22). Both the counter (22) and the indicator light (23) are connected to the contact switch (21). A spring plate (24) is provided on the outside of the contact switch (21), and the spring plate (24) is disposed between the jumper spring rod (2) and the contact switch (21).

5. The continuous sewing equipment for multi-layer skirts according to claim 1, characterized in that: The pressure plate (3) and the base (31) are both PVC block-shaped long rods. The blade (32) has two vertical sides with cutting edges, and the cutting edge of the blade (32) is a curved arc surface. A slider (35) and a push block (33) are fixed on the top of the blade (32). The slider (35) is connected between the push block (33) and the blade (32). The push block (33) is a rubber block structure and extends out above the pressure plate (3) without contact. The slider (35) is slidably disposed inside the limiting groove (37), and the slider (35) and the inner wall of the limiting groove (37) are engaged and slidably connected by a dovetail groove; The guide groove (34) is a vertically opened long strip groove. The depth of the guide groove (34) is greater than the height of the blade (32), that is, the lower end of the blade (32) does not contact the bottom of the guide groove (34). The guide groove (34) and the front and rear sides of the blade (32) are in clearance fit, with a gap not exceeding 1mm.

6. The continuous sewing equipment for multi-layer skirts according to claim 1, characterized in that: The opening height gap h between the partition (11) and the bottom plate (14) is 2cm, and the opening height at the bottom of the front side wall of the feeding box (1) is also 2cm.

7. The continuous sewing equipment for multi-layer skirts according to claim 1, characterized in that: The top of the vertical sidewalls on the left and right sides of the feeding box (1) is also provided with multiple slots (44). The slots (44) are U-shaped grooves with top openings. Each slot (44) is also provided with a U-shaped pipe clamp. The number of slots (44) on the left and right sides of the feeding box (1) is the same, and their positions are symmetrically arranged. The axes of the slots (44) arranged symmetrically are coincident on the same horizontal plane.

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