Pillowcase four-edge sewing equipment

Abstract

The utility model provides equipment for sewing four edges of a throw pillow case. The equipment comprises a cloth feeding mechanism, a short edge sewing mechanism, a cutting mechanism and a long edge sewing mechanism, the cloth feeding mechanism comprises a first cloth placing frame, a second cloth placing frame and a cloth overlapping module; the short edge sewing module comprises two first sewing machines and two second sewing machines; the cutting mechanism comprises a cloth pulling frame and a cutting knife, and the cloth pulling frame comprises a movable cloth pulling clamp; the long edge sewing mechanism comprises a platform, a movable cloth moving rod is arranged above the platform, and third sewing machines are arranged at the two ends of the platform. Two rolls of cloth are placed on the first cloth placing frame and the second cloth placing frame respectively and overlapped through the cloth overlapping module. Cloth is sewn on the two sides through the two first sewing machines, then the two sides of the cloth are sewn towards the middle by a certain distance through the two second sewing machines, then the cloth is moved to the platform through the cloth pulling clamp to be cut, finally, the cloth is pushed by the cloth moving rod to be pressed and fixed towards the cloth pressing rods on the two sides, the bolster sleeve is formed through sewing of the third sewing machine, and the overall equipment structure and the manufacturing process are simple.

Description

Technical Field

[0001] This utility model relates to the field of fabric processing technology, and more specifically, to a four-sided sewing device for pillowcases. Background Technology

[0002] Pillowcases are used to wrap pillow inserts, resembling the opening of a cloth bag for easy replacement and washing. Currently, pillowcase production mainly relies on manual labor. A machine first cuts two pieces of fabric of identical shape and size, then sews them together using a traditional sewing machine to form a C-shaped pillowcase. While there are processing devices for pillowcases on the market, such as the existing patent: "A Pillowcase Production Equipment and Manufacturing Method," patent number: CN119121514A, which discloses a pillowcase manufacturing equipment and method, the composition and manufacturing process of pillowcases are relatively simple. However, existing equipment and processes are complex and cannot produce pillowcases efficiently. Therefore, a fully automated pillowcase production device is urgently needed. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a four-sided sewing device for a pillowcase, which solves the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a four-sided sewing device for a pillowcase, comprising a fabric feeding mechanism, a short-side sewing mechanism, a cutting mechanism, and a long-side sewing mechanism arranged in sequence;

[0005] The fabric feeding mechanism includes a first fabric feeding frame, a second fabric feeding frame, and a fabric overlapping module. The fabric overlapping module includes a conveying roller and a tensioning roller. The first fabric feeding frame and the second fabric feeding frame are located on the same side of the fabric overlapping module, and the tensioning roller is located on one side of the conveying roller.

[0006] The short-side sewing mechanism includes two first sewing machines and two second sewing machines, which are slidably arranged opposite each other.

[0007] The cutting mechanism includes a fabric puller and a cutting blade, the cutting blade being disposed between the fabric puller and the second sewing machine, and the fabric puller including a movable fabric pull clamp;

[0008] The long-side sewing mechanism includes a platform, with a movable fabric transfer rod and a fabric pressing rod above the platform. A third sewing machine is installed at both ends of the platform. The fabric transfer rod moves in the middle and at both ends of the platform, and the fabric pressing rod presses down vertically on the platform.

[0009] Furthermore, the long-side sewing mechanism includes two downward-facing moving tracks disposed above the platform, with a pressing cylinder mounted on the moving tracks, and the piston rod of the pressing cylinder being connected to the fabric moving rod.

[0010] Furthermore, fabric picking mechanisms are provided at both ends of the platform. The fabric picking mechanism includes two fabric picking clamps and a fabric stacking platform. The fabric stacking platform is vertically movable and is located below the platform. The fabric picking clamps are located on one side of the platform.

[0011] Furthermore, the cutting mechanism also includes a fabric clamping rod and a camera, which are positioned above and between the short-side sewing mechanism and the cutting blade.

[0012] Furthermore, the short-side sewing mechanism further includes a rotatable fabric storage rack, which is U-shaped and has a counterweight at one end near the opening.

[0013] Furthermore, the short-side sewing mechanism also includes two position sensors, each corresponding to one of the two first sewing machines.

[0014] Furthermore, the first and second fabric racks are further equipped with opposite edge sensors.

[0015] A method for manufacturing a pillowcase, using the aforementioned pillowcase production equipment, includes the following steps:

[0016] S1: The two rolls of fabric are placed manually on the first fabric rack and the second fabric rack respectively, and the free ends of the two rolls of fabric are pulled to the fabric overlapping mold;

[0017] S2: The two fabrics are conveyed to the two first sewing machines in overlapping directions along the conveying direction via the conveying roller and the tensioning roller;

[0018] S3: The two first sewing machines sew the fabric on both sides along the transmission direction;

[0019] S4: After sewing on both sides of the fabric, it is fed to the two second sewing machines. The two second sewing machines move relative to each other along a direction perpendicular to the fabric feeding direction and sew the same size on both sides of the fabric.

[0020] S5: The fabric clamp holds the fabric that has been horizontally sewn and passes under the cutter and lays it flat on the platform, where the cutter cuts it.

[0021] S6: Control the fabric transfer rod to press down the cut fabric and move it to both sides of the platform. The fabric pressing rod presses down to fix the fabric on the platform. The third sewing machine sews the fabric together to form a C-shaped pillowcase.

[0022] The beneficial effects of this utility model are:

[0023] This utility model discloses a four-sided sewing device for a pillowcase, comprising a fabric feeding mechanism, a short-side sewing mechanism, a cutting mechanism, and a long-side sewing mechanism arranged sequentially. The fabric feeding mechanism includes a first fabric placement frame, a second fabric placement frame, and a fabric overlapping module. The fabric overlapping module includes a conveying roller and a tensioning roller. The first and second fabric placement frames are located on the same side of the fabric overlapping module, and the tensioning roller is located on one side of the conveying roller. The short-side sewing mechanism includes two first sewing machines and two second sewing machines, which are slidably arranged opposite each other. The cutting mechanism includes a fabric pulling frame and a cutting blade, with the cutting blade located between the fabric pulling frame and the second sewing machines. The fabric pulling frame includes a movable fabric pulling clamp. The long-side sewing mechanism includes a platform with a movable fabric transfer rod above it. Third sewing machines are located at both ends of the platform, and the fabric transfer rod moves between the middle and both ends of the platform. Two rolls of fabric are placed on the first and second fabric racks respectively, and then overlapped by the fabric overlapping module. The two sides are sewn together by two first sewing machines, and then the two second sewing machines sew a distance from both sides of the fabric towards the middle. After being cut by the cutter, the fabric is moved to the platform by the fabric clamp. Finally, the fabric is pushed down by the fabric transfer rod and pressed down by the fabric pressing rods on both sides. The fabric is then sewn together by the third sewing machine to form a pillowcase. The overall equipment structure and manufacturing process are relatively simple, realizing the automatic production of pillowcases. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This utility model provides a structural schematic diagram of a four-sided sewing device for a pillowcase;

[0026] Figure 2 A schematic diagram of the upper fabric mechanism of the four-sided sewing device for the pillowcase described in this utility model;

[0027] Figure 3 A schematic diagram of the fabric overlap module structure of the four-sided sewing device for the pillowcase described in this utility model;

[0028] Figure 4 A schematic diagram of the upper fabric mechanism and the two first sewing machines of the pillowcase four-side sewing device of this utility model;

[0029] Figure 5 A schematic diagram of the cutting mechanism and the long side sewing mechanism of the pillowcase four-side sewing device of this utility model;

[0030] Figure 6Another angle structural diagram of the long side sewing mechanism of the four-sided sewing device for the pillowcase described in this utility model;

[0031] Figure 7 A schematic diagram of the fabric-removing clamp structure of the four-sided sewing device for the pillowcase described in this utility model;

[0032] Figure 8 This utility model provides a schematic diagram of the fabric support frame structure for the four-sided sewing device for pillowcases.

[0033] Explanation of main component symbols

[0034] 10. Fabric feeding mechanism; 101. First fabric placement frame; 1011. First corner frame; 1012. First L-shaped bracket; 1013. First support roller; 102. Second fabric placement frame; 1021. Second corner frame; 1022. Second L-shaped bracket; 1023. Second support roller; 103. Fabric overlapping module; 1031. Conveyor roller; 1032. Tensioning roller; 104. Edge sensor;

[0035] 20. Short-side sewing mechanism; 201. First sewing machine; 202. Second sewing machine; 203. Fabric storage rack; 204. Position sensor;

[0036] 30. Cutting mechanism; 301. Fabric puller; 3011. Fabric clamp; 302. Cutting knife; 303. Fabric clamping rod; 304. Camera;

[0037] 40. Long-side sewing mechanism; 401. Platform; 402. Fabric transfer rod; 403. Fabric pressing rod; 404. Third sewing machine; 405. Fabric pick-up clamp; 406. Fabric folding platform. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0039] Example 1

[0040] Please refer to Figure 1 This utility model provides a four-sided sewing device for a pillowcase, comprising a fabric feeding mechanism 10, a short-side sewing mechanism 20, a cutting mechanism 30, and a long-side sewing mechanism 40 arranged sequentially. The fabric feeding mechanism 10 is used to overlap two pieces of fabric and convey them to the short-side sewing mechanism 20. The short-side sewing mechanism 20 is used to sew the two sides of the overlapped fabric and sew the opening of the pillowcase. The cutting mechanism 30 is used to cut the fabric into single pieces and place them onto the long-side sewing mechanism. The long-side sewing mechanism sews the opposite side of the fabric opening to form a pillowcase.

[0041] Please refer to Figure 2-3 The fabric feeding mechanism 10 includes a first fabric feeding frame 101, a second fabric feeding frame 102, and a fabric overlapping module 103. The first fabric feeding frame 101 and the second fabric feeding frame 102 are located on the same side of the fabric overlapping module 103, and the tensioning roller 1032 is located on one side of the conveying roller 1031. Specifically, the first fabric feeding frame 101 includes a first corner frame 1011 and a first L-shaped support 1012. A first support roller 1013 is provided on the first corner frame, and rollers are arranged on the first L-shaped support 1012. A whole roll of fabric is wrapped around the support roller, and the free end of the fabric goes from the roller on the first L-shaped support 1012 to the fabric overlapping module 103 from above. The second fabric feeding frame 102 includes a second corner frame, a second support roller 1023 is provided on the second corner frame, and rollers are arranged on the second L-shaped support 1022. Another whole roll of fabric is wrapped around the second support roller 1023, and the free end of the fabric goes directly to the overlapping module, realizing the feeding of two pieces of fabric.

[0042] Please refer to Figure 3 The fabric overlapping module 103 includes a conveying roller 1031 and a tensioning roller 1032. The conveying roller 1031 and the tensioning roller each include two sets, which are arranged vertically on the frame. The free end of the fabric coming from the first fabric holder 101 is conveyed from the upper conveying roller 1031, then passes around the upper tensioning roller to the lower conveying roller 1031. The free end of the fabric on the second fabric holder 102 goes directly to the lower conveying roller 1031. The overlapping fabric goes from the lower tensioning roller to the short side sewing mechanism. The overlapping module conveys and overlaps the two pieces of fabric together and then conveys them to the short side sewing mechanism.

[0043] Furthermore, the first fabric placement frame 101 and the second fabric placement frame 102 are further equipped with edge sensors 104. One edge sensor 104 is installed on the L-shaped bracket to monitor whether the fabric conveyed by the first fabric placement frame 101 deviates from its position; the other edge sensor 104 is installed on the frame of the non-overlapping module to monitor whether the fabric conveyed by the second fabric placement frame 102 deviates from its position in real time. The edge sensors 104 play a monitoring role during the conveying process of the two fabrics.

[0044] Please refer to Figure 4-6The short-side sewing mechanism includes two first sewing machines 201 and two second sewing machines 202, which are slidably arranged relative to each other. Specifically, the two first sewing machines 201 are mounted on the frame and can move relative to each other. The overlapped fabric passes between the two first sewing machines 201, and the two first sewing machines 201 sew the two sides of the moving fabric. Furthermore, the short-side sewing mechanism also includes two position sensors 204, each corresponding to one of the two first sewing machines 201. The two position sensors 204 are mounted on the frame. The overlapped fabric first passes through the two position sensors 204, with the positions of the two position sensors 204 corresponding to the two sides of the fabric. The relative distance between the two first sewing machines 201 is adjusted according to the positions of the two edges of the fabric to ensure precise sewing of the two first sewing machines 201 on the two sides of the overlapped fabric.

[0045] Furthermore, the short-side sewing mechanism further includes a rotatable fabric storage frame 203, which is U-shaped. A counterweight is provided at one end near the opening. The two sides of the fabric storage frame 203 are hinged to the side of the frame near the two second sewing machines 202. The fabric after sewing on both sides passes through the fabric storage frame 203. When the amount of fabric conveyed from the second sewing machine 202 increases, the fabric storage frame 203 will press down on the fabric under the action of gravity, which increases the curvature of the fabric bending, thus playing the role of temporarily storing and pre-tensioning the fabric.

[0046] Please refer to Figure 4-6 Two second sewing machines 202 are installed on the frame, and a lead screw is installed on the frame. The lead screw drives the two second sewing machines 202 to move closer or further apart. The sewn fabric moves between the two second sewing machines 202. By controlling the two second sewing machines 202 to move closer to each other, a distance is sewn on both sides of the fabric towards the middle to form a middle opening, thus completing the opening of the pillowcase and the sewing of the two sides.

[0047] Please refer to Figure 2 , Figure 8The cutting mechanism 30 includes a fabric support frame 301 and a cutting blade 302. The cutting blade 302 is positioned between the fabric support frame 301 and the second sewing machine 202. The fabric support frame 301 includes a movable fabric clamp 3011. Specifically, the fabric support frame 301 is positioned on one side of the platform 401. The fabric sewn by the two second sewing machines 202 is conveyed towards the platform 401. The cutting mechanism 30 includes a fabric clamping rod 303 and a camera 304. Positioned above the short-side sewing mechanism and the cutting blade 302, when the camera 304 captures the fabric, the fabric puller 301 is controlled to move towards the side of the two second sewing machines 202. The fabric puller 3011 clamps one end of the fabric and pulls the fabric to lay it on the platform 401. Then, the fabric clamping rod 303 is controlled to clamp the fabric, and the cutting blade 302 is controlled to cut it, forming a fabric cover that can be opened and falls on the platform 401, with the side to be sewn facing the side closer to the cutting blade 302.

[0048] Please refer to Figure 5-6 The long-side sewing mechanism 40 includes a platform 401, with a movable fabric transfer rod 402 and a fabric pressing rod 403 mounted above the platform 401. Third sewing machines 404 are mounted at both ends of the platform 401. The fabric transfer rod 402 moves between the middle and both ends of the platform 401. Specifically, the long-side sewing mechanism 40 includes two downward-facing moving tracks mounted above the platform 401. A pressing cylinder is mounted on each moving track, and the piston rod of the pressing cylinder is connected to the fabric transfer rod 402. The moving rod 402 presses down onto the fabric that has fallen onto the platform 401. The fabric transfer rod 402 moves the fabric to one side of the platform 401. Then, the fabric pressing rod 403 presses the fabric down onto the platform 401. Finally, the third sewing machine 404 sews one edge of the fabric to form a pillowcase.

[0049] Please refer to Figure 5-7 Platform 401 is further equipped with fabric picking mechanisms at both ends. These mechanisms include two fabric picking clamps 405 and a folding platform 406. The folding platform 406 is vertically movable and positioned below platform 401, while the fabric picking clamps 405 are positioned on one side of platform 401. Specifically, after the pillowcase is sewn, it rests on platform 401. The two fabric picking clamps 405 are moved closer to platform 401 to clamp the pillowcase. Moving the clamps 405 causes the pillowcase to fall onto the folding platform 406, which can then move vertically downwards, leaving the pillowcase on the folding platform 406.

[0050] Example 2

[0051] A method for manufacturing a pillowcase, using the pillowcase production equipment described above, includes the following steps:

[0052] S1: The two rolls of fabric are placed manually on the first fabric rack 101 and the second fabric rack 102 respectively, and the free ends of the two rolls of fabric are pulled to the fabric overlapping module 103. The first fabric rack 101 and the second fabric rack 102 realize the feeding of the fabric.

[0053] S2: After passing through the conveyor roller 1031 and tension roller 1032, the two pieces of fabric are overlapped and conveyed to the two first sewing machines 201 along the conveying direction. The two sets of conveyor rollers 1031 and tension roller 1032 overlap the two pieces of fabric and convey them to the two first sewing machines 201.

[0054] S3: The two first sewing machines 201 respectively sew the fabric on both sides along the transmission direction to complete the seam on both sides;

[0055] S4: After the fabric is sewn on both sides, it is conveyed to two second sewing machines 202. The two second sewing machines 202 move relative to each other along the direction perpendicular to the fabric conveying direction and sew the same size on both sides of the fabric. The fabric is then sewn together by the two second sewing machines 202 to form a C-shaped opening.

[0056] S5: The fabric clamp 3011 clamps the fabric that has been horizontally sewn and passes under the cutter 302 and lays it flat on the platform 401. The cutter 302 cuts the fabric to form a single piece that falls onto the platform 401.

[0057] S6: Control the fabric transfer rod 402 to press down the cut fabric and move it to both sides of the platform 401. The third sewing machine 404 sews the fabric together to form a C-shaped pillowcase.

[0058] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A four-sided sewing device for a pillowcase, characterized in that, It includes a fabric feeding mechanism, a short-side sewing mechanism, a cutting mechanism, and a long-side sewing mechanism arranged in sequence; The fabric feeding mechanism includes a first fabric feeding frame, a second fabric feeding frame, and a fabric overlapping module. The fabric overlapping module includes a conveying roller and a tensioning roller. The first fabric feeding frame and the second fabric feeding frame are located on the same side of the fabric overlapping module, and the tensioning roller is located on one side of the conveying roller. The short-side sewing mechanism includes two first sewing machines and two second sewing machines, which are slidably arranged opposite each other. The cutting mechanism includes a fabric puller and a cutting blade, the cutting blade being disposed between the fabric puller and the second sewing machine, and the fabric puller including a movable fabric pull clamp; The long-side sewing mechanism includes a platform, with a movable fabric transfer rod and a fabric pressing rod above the platform. A third sewing machine is installed at both ends of the platform. The fabric transfer rod moves in the middle and at both ends of the platform, and the fabric pressing rod presses down vertically on the platform.

2. The pillowcase four-sided sewing device according to claim 1, characterized in that: The long-side sewing mechanism includes two downward-facing moving tracks arranged above the platform, with a pressing cylinder mounted on the moving tracks, and the piston rod of the pressing cylinder being connected to the fabric moving rod.

3. The pillowcase four-sided sewing device according to claim 1, characterized in that: The platform is further provided with fabric picking mechanisms at both ends. The fabric picking mechanism includes two fabric picking clamps and a fabric stacking platform. The fabric stacking platform is vertically movable and is located below the platform. The fabric picking clamps are located on one side of the platform.

4. The pillowcase four-sided sewing device according to claim 1, characterized in that: The cutting mechanism also includes a fabric clamping rod and a camera, which are positioned above and between the short-side sewing mechanism and the cutting blade.

5. The pillowcase four-sided sewing device according to claim 1, characterized in that: The short-side sewing mechanism further includes a rotatable fabric storage rack, which is U-shaped and has a counterweight at one end near the opening.

6. The pillowcase four-sided sewing device according to claim 1, characterized in that: The short-side sewing mechanism also includes two position sensors, each corresponding to one of the two first sewing machines.

7. The pillowcase four-sided sewing device according to claim 1, characterized in that: The first and second fabric racks are further equipped with opposite edge sensors.

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