Fitted Sheet Manufacturing Method and Equipment

Abstract

This invention relates to a method and apparatus for manufacturing fitted sheets. The apparatus includes a base, a first cutting component, and a second cutting component. A limiting cylinder is positioned above the base, with a first cutting plate and a second cutting plate positioned on either side of the limiting cylinder. A first moving component is located inside the base, a rotating component is located at one end of the limiting cylinder, and a clamping component is located inside the side opening. Two sets of first cutting components are positioned in the middle of the inner side of the first cutting plate, one set of first cutting components is positioned in the middle of the inner side of the second cutting plate, and one set of second cutting components is positioned at the bottom of the inner side of the second cutting plate. Using the fitted sheet manufacturing apparatus and method of this application, during the fitted sheet manufacturing process, after the fitted sheet is fixed and tightened in one go, the fitted sheet is precisely cut into six required fitted sheet segments in one operation, simultaneously meeting the required cutting length, thus greatly improving the efficiency of fitted sheet cutting production.

Description

Technical Field

[0001] This invention relates to the field of fitted sheet manufacturing equipment technology, and more particularly to fitted sheet manufacturing methods and apparatus. Background Technology

[0002] Simply put, a fitted sheet is a fabric cover that is placed directly over a mattress. Its main purpose is to cover the mattress, and cutting the fitted sheet is an important step in the fitted sheet production process.

[0003] However, traditional fitted sheet cutting production equipment, such as the fitted sheet cutting device with application number CN201920327794.0, can only cut fitted sheets into one or two required sections after fixing and flattening them. This results in low production efficiency. Furthermore, when cutting fitted sheets into multiple sections, the fitted sheets tend to loosen, failing to meet the required production quality. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a method and apparatus for manufacturing fitted sheets, the specific technical solution of which is as follows:

[0005] One objective of this invention is to provide a fitted sheet manufacturing apparatus, comprising a base, a first cutting assembly, and a second cutting assembly. A limiting cylinder is disposed above the base, and symmetrical first and second cutting plates are disposed on both sides of the limiting cylinder. A first moving assembly is disposed inside the base to drive the first and second cutting plates to move towards or away from each other. A rotating assembly is disposed at one end of the limiting cylinder to drive the limiting cylinder to rotate. A clamping assembly is disposed inside the side opening to clamp the end of the fitted sheet. Two sets of first cutting plates are disposed in the middle of the inner side of the first cutting plate. The second cutting plate has a set of first cutting components in the middle of its inner side and a set of second cutting components in the bottom of its inner side. The first cutting component includes a first housing, a first cutting blade, and a second moving component. The second moving component is used to drive the first cutting blade to move along the axis of the first or second cutting plate. The second cutting component includes a second housing, two sets of second cutting blades, and a third moving component. The third moving component is used to drive the two sets of second cutting blades to move towards or away from each other along the axis of the second cutting plate.

[0006] As an improvement to the above technical solution: two first openings are provided in the middle of the inner side of the first cutting plate, and a first cutting component is fixedly installed in each first opening; a third opening is provided in the middle of the inner side of the second cutting plate, and a second opening is provided at the inner end of the second cutting plate; a first cutting component is fixedly installed inside the third opening, and a second cutting component is fixedly installed inside the second opening.

[0007] As an improvement to the above technical solution: the limiting cylinder is hollow, the inner sides of the first and second cutting plates are both arc-shaped and match the outer side of the limiting cylinder, the slicing direction of the second cutting blade is set in the R direction, and the slicing direction of the first cutting blade is set in the axial direction of the first or second cutting plate.

[0008] As an improvement to the above technical solution: the limiting cylinder has a side opening on the side near the first cutting plate, and the clamping assembly includes a first electric telescopic rod fixedly installed inside the side opening and two sets of fabric clamps near the side opening. The output rod of the first electric telescopic rod is fixedly connected to the fabric clamps through a fixing plate.

[0009] As an improvement to the above technical solution: the rotating component includes a mounting bracket fixedly connected to one side of the base, and a second drive motor is fixedly installed on the mounting bracket near the limiting cylinder. The output end of the second drive motor is fixedly connected to the center of one end of the limiting cylinder.

[0010] As an improvement to the above technical solution: a third electric telescopic rod is fixedly installed at the bottom of the inner side of the second top shell, and the top output rod of the third electric telescopic rod is fixedly connected to the bottom of the second cutting blade. A second electric telescopic rod is fixedly installed at the bottom of the inner side of the first top shell, and a first cutting blade is fixedly installed at the top output rod of the second electric telescopic rod.

[0011] As an improvement to the above technical solution: the first moving component includes a first drive motor fixedly installed on one side of the inner wall of the base, the output end of the first drive motor is fixedly connected to a first threaded rod, the surface of the first threaded rod is symmetrically threaded with two sets of first nut blocks, the top ends of the two first nut blocks are fixedly connected to a connecting frame, one end of one of the connecting frames is fixedly connected to the outer side of the first cutting plate, and one end of the other connecting frame is fixedly connected to the outer side of the second cutting plate, and the top of the base is provided with a first limiting strip opening.

[0012] As an improvement to the above technical solution: the second moving component includes a third drive motor fixedly installed on one side of the inner wall of the first housing. The output shaft of the third drive motor is fixedly connected to a second threaded rod. A second screw block is threadedly connected to the second threaded rod. The top of the second screw block is fixedly connected to the bottom of the first top shell. A second limiting slot is provided on the top of the first housing.

[0013] As an improvement to the above technical solution: the third moving component includes a fourth drive motor fixedly installed on one side of the inner wall of the second housing. The output end of the fourth drive motor is fixedly connected to a third threaded rod. The surface of the third threaded rod is symmetrically threaded with two sets of third nut blocks. The top ends of the two third nut blocks are fixedly connected to the bottom end of the second top shell. A third limiting strip opening is provided on the top of the second housing.

[0014] A second objective of this invention is to provide a method for manufacturing fitted sheets, using the aforementioned fitted sheet manufacturing apparatus, the method comprising the following steps:

[0015] Step 1: Secure the fitted sheet: Roll the fitted sheet to be cut onto the surface of the limiting tube, then insert both ends of the fitted sheet into the inside of the limiting tube through the side openings, and tighten the two ends of the fitted sheet using the clamping assembly to keep the fitted sheet taut.

[0016] Step 2, Fitting the fitted sheet: The first moving component drives the first cutting board and the second cutting board to move in opposite directions, so that the inner surfaces of the first cutting board and the second cutting board are fitted with the fitted sheet.

[0017] Step 3: Adjust the cutting position: The two second cutting blades are moved towards each other or away from each other by the third moving component to adjust the two second cutting blades to the specified cutting positions on both sides of the fitted sheet;

[0018] Step 4: Cutting blade contacts the fitted sheet: Control the third electric telescopic rod to move the second cutting blade toward the fitted sheet, so that the second cutting blade contacts the fitted sheet; Control the second electric telescopic rod to move the first cutting blade toward the fitted sheet, so that the first cutting blade contacts the fitted sheet.

[0019] Step 5, Cutting the fitted sheet: Rotate the limiting cylinder by rotating the assembly, and finally align the side opening on the limiting cylinder with the inner center of the first cutting board;

[0020] Step 6: Separate the fitted sheet: The second moving component drives the first cutting blade in the first cutting component to move along the axis of the first cutting plate and the second cutting plate, so that the two ends of the fitted sheet are flattened and the middle part of the fitted sheet is cut and separated.

[0021] The beneficial effects of this invention are as follows:

[0022] The fitted sheet production apparatus and method of this application enable precise cutting of fitted sheets of different widths during the fitted sheet production process. After the fitted sheet is fixed and tightened at once, the fitted sheet can be divided into 3 segments along the axial direction of the limiting cylinder and into 2 segments along the circumference of the limiting cylinder. Finally, the fitted sheet is precisely cut into 6 segments as required in one go, while meeting the required cutting length, which greatly improves the cutting efficiency of fitted sheets. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0024] Figure 2 This is a schematic diagram of the overall main sectional structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the second cutting plate in this invention;

[0026] Figure 4 This is a schematic diagram of the structure of the first cutting plate in this invention;

[0027] Figure 5 This is a schematic diagram of the structure of the first cutting component in this invention;

[0028] Figure 6 This is a schematic diagram of the structure of the second cutting component in this invention;

[0029] Figure 7 This is a schematic diagram of the fitted sheet structure after cutting in this invention.

[0030] Reference numerals: 1. Base; 10. First limiting strip opening; 11. First drive motor; 12. First threaded rod; 13. First nut block; 2. Connecting frame; 3. First cutting plate; 30. First through-hole; 4. Mounting frame; 41. Second drive motor; 5. Limiting cylinder; 50. Side opening; 51. First electric telescopic rod; 52. Fabric clamp; 6. Second cutting plate; 60. Second through-hole; 61. Third through-hole; 7. First cutting assembly; 70. 71. Second limiting slot; 72. First housing; 73. Third drive motor; 74. Second threaded rod; 75. First top shell; 76. Second electric telescopic rod; 77. First cutting blade; 88. Second screw block; 89. Second cutting assembly; 80. Third limiting slot; 81. Second housing; 82. Fourth drive motor; 83. Second top shell; 84. Third electric telescopic rod; 85. Second cutting blade; 86. Third threaded rod; 87. Third nut block. Detailed Implementation

[0031] Example:

[0032] This embodiment provides a fitted sheet manufacturing apparatus, see [link / reference] Figure 1-7The system includes a base 1, a first cutting assembly 7, and a second cutting assembly 8. A limiting cylinder 5 is positioned above the base 1. Symmetrical first cutting plates 3 and second cutting plates 6 are positioned on both sides of the limiting cylinder 5. A first moving assembly is located inside the base 1 to drive the first cutting plates 3 and second cutting plates 6 to move towards or away from each other. A rotating assembly is located at one end of the limiting cylinder 5 to drive its rotation. A clamping assembly for clamping the end of the fitted sheet is located inside the side opening 50. Two sets of first cutting assemblies 7 and second cutting plates 6 are located in the middle of the inner side of the first cutting plate 3. A first cutting assembly 7 is provided in the middle of the inner side of the second cutting plate 3, and a second cutting assembly 8 is provided in the bottom of the inner side of the second cutting plate 6. The first cutting assembly 7 includes a first housing 71, a first cutting blade 76, and a second moving assembly. The second moving assembly is used to drive the first cutting blade 76 to move along the axial direction of the first cutting plate 3 or the second cutting plate 6. The second cutting assembly 8 includes a second housing 81, two sets of second cutting blades 85, and a third moving assembly. The third moving assembly is used to drive the two sets of second cutting blades 85 to move towards each other or away from each other along the axial direction of the second cutting plate 6.

[0033] In an optional embodiment: two first openings 30 are opened in the middle of the inner side of the first cutting plate 3, the two first openings 30 are spaced apart by a distance, and a first cutting component 7 is fixedly installed in each first opening 30; a third opening 61 is opened in the middle of the inner side of the second cutting plate 6; a second opening 60 is opened at the inner end of the second cutting plate 6; a first cutting component 7 is fixedly installed in the third opening 61; and a second cutting component 8 is fixedly installed in the second opening 60.

[0034] In an optional embodiment: the limiting cylinder 5 is hollow cylindrical in shape, and the inner surfaces of the first cutting plate 3 and the second cutting plate 6 are both arc-shaped and match the outer surface of the limiting cylinder 5. Thus, the first cutting plate 3 and the second cutting plate 6 can be tightly attached to the limiting cylinder 5. The slicing direction of the second cutting blade 85 is set in the R direction, that is, the slicing direction of the second cutting blade 85 is set along the circumferential direction of the inner surface of the second cutting plate 6. The slicing direction of the first cutting blade 76 is set in the axial direction of the first cutting plate 3 or the second cutting plate 6.

[0035] In an optional embodiment: the limiting cylinder 5 has a side opening 50 on the side near the first cutting plate 3, and the clamping assembly includes a first electric telescopic rod 51 fixedly installed inside the side opening 50 and two sets of fabric clamps 52 near the side opening 50. The fabric clamps 52 are fabric clamps that can clamp the end of the fitted sheet in the prior art, which will not be described in detail in this application. The output rod of the first electric telescopic rod 51 is fixedly connected to the fabric clamps 52 through a fixing plate.

[0036] In an optional embodiment: the rotating assembly includes a mounting bracket 4 fixedly connected to one side of the base 1. A second drive motor 41 is fixedly mounted on the mounting bracket 4 near the limiting cylinder 5. The output end of the second drive motor 41 is fixedly connected to the center of one end of the limiting cylinder 5, so the limiting cylinder 5 can be driven to rotate by the second drive motor 41.

[0037] In an optional embodiment: a third electric telescopic rod 84 is fixedly installed at the bottom of the inner interior of the second top shell 83, and the top output rod of the third electric telescopic rod 84 is fixedly connected to the bottom of the second cutting blade 85. A second electric telescopic rod 75 is fixedly installed at the bottom of the inner interior of the first top shell 74, and a first cutting blade 76 is fixedly installed at the top output rod of the second electric telescopic rod 75, thereby adjusting the distance between the second cutting blade 85 and the first cutting blade 76 and the first cutting plate 3 and the second cutting plate 6.

[0038] In an optional embodiment: the first moving component includes a first drive motor 11 fixedly installed on one side of the inner wall of the base 1. The output end of the first drive motor 11 is fixedly connected to a first threaded rod 12. The other end of the first threaded rod 12 is rotatably connected to the other side of the inner wall of the base 1. Two sets of first nut blocks 13 are symmetrically threaded on the surface of the first threaded rod 12. A connecting frame 2 is fixedly connected to the top of each of the two first nut blocks 13. One end of one connecting frame 2 is fixedly connected to the outer side of the first cutting plate 3, and one end of the other connecting frame 2 is fixedly connected to the outer side of the second cutting plate 6. A first limiting slot 10 is opened on the top of the base 1. Specifically, the connecting frame 2 is L-shaped. Two threads with opposite directions are opened on the first threaded rod 12, and the threads match the inner sidewall of the first nut block 13. Both connecting frames 2 are slidably connected in the first limiting slot 10, thereby limiting the two connecting frames 2. When the first threaded rod 12 is rotated, the two connecting frames 2 can stably drive the first cutting plate 3 and the second cutting plate 6 to move towards or away from each other.

[0039] In an optional embodiment: the second moving component includes a third drive motor 72 fixedly installed on one side of the inner wall of the first housing 71. The output shaft of the third drive motor 72 is fixedly connected to a second threaded rod 73. The other end of the second threaded rod 73 is rotatably connected to the other side of the inner wall of the first housing 71. A second screw block 77 is threadedly connected to the second threaded rod 73. The top of the second screw block 77 is fixedly connected to the bottom of the first top housing 74. A second limiting slot 70 is provided on the top of the first housing 71. Specifically, the two sides of the first top housing 74 are slidably connected to the second limiting slot 70, so that the second screw block 77 can drive the first top housing 74 to move more stably.

[0040] In an optional embodiment: the third moving component includes a fourth drive motor 82 fixedly installed on one side of the inner wall of the second housing 81. The output end of the fourth drive motor 82 is fixedly connected to a third threaded rod 86. The other end of the third threaded rod 86 is rotatably connected to the other side of the inner wall of the second housing 81. Two sets of third nut blocks 87 are symmetrically threaded on the surface of the third threaded rod 86. The top ends of the two third nut blocks 87 are fixedly connected to the bottom end of the second top shell 83. A third limiting slot 80 is opened on the top of the second housing 81.

[0041] Specifically, the third threaded rod 86 has two threads with opposite directions, and these threads match the inner wall of the third nut block 87. The two second top shells 83 are slidably connected in the third limiting slot 80, thereby limiting the two second top shells 83. When the third threaded rod 86 is rotated, the two third nut blocks 87 can stably drive the second cutting blades 85 on the second top shells 83 to move towards or away from each other. Specifically, this application also includes a controller, which is electrically or wirelessly connected to the first drive motor 11, the second drive motor 41, the third drive motor 72, and the fourth drive motor 82.

[0042] In an optional embodiment, a method for manufacturing fitted sheets is provided, using the fitted sheet manufacturing apparatus described above, the method comprising the following steps:

[0043] Step 1: Secure the fitted sheet: Roll the fitted sheet to be cut onto the surface of the limiting cylinder 5, and then insert both ends of the fitted sheet into the inside of the limiting cylinder 5 through the side openings 50. Tighten the two ends of the fitted sheet by the clamping assembly to keep the fitted sheet taut, which will facilitate stable cutting of the fitted sheet later.

[0044] Step 2, Fitting the fitted sheet: The first moving component drives the first cutting plate 3 and the second cutting plate 6 to move in opposite directions, so that the inner surfaces of the first cutting plate 3 and the second cutting plate 6 are fitted with the fitted sheet.

[0045] Step 3: Adjust the cutting position: The two second cutting blades 85 are moved towards each other or away from each other by the third moving component to adjust the two second cutting blades 85 to the designated cutting positions on both sides of the fitted sheet.

[0046] Step 4, Cutting blade contacts the fitted sheet: Control the third electric telescopic rod 84 to move the second cutting blade 85 towards the fitted sheet, so that the second cutting blade 85 contacts the fitted sheet. Control the second electric telescopic rod 75 to move the first cutting blade 76 towards the fitted sheet, so that the first cutting blade 76 contacts the fitted sheet. Specifically, the movement distance of the second cutting blade 85 and the first cutting blade 76 is controlled by the uniform controller.

[0047] Step 5: Cutting the fitted sheet: The limiting cylinder 5 is rotated one revolution by the rotating assembly. Finally, the side opening 50 on the limiting cylinder 5 is aligned with the inner center of the first cutting plate 3, thereby cutting the two sides of the fitted sheet.

[0048] Step 6: Separate the fitted sheet: The second moving component drives the first cutting blade 76 in the first cutting component 7 to move along the axis of the first cutting plate 3 and the second cutting plate 6, so that the two ends of the fitted sheet are flattened and the middle part of the fitted sheet is cut and separated.

[0049] In summary, the fitted sheet production apparatus and method of this application enable precise cutting of fitted sheets of different widths during the fitted sheet production process. After the fitted sheet is fixed and tightened at once, the fitted sheet can be divided into 3 segments along the axial direction of the limiting cylinder 5 and into 2 segments along the circumferential direction of the limiting cylinder 5. Ultimately, the fitted sheet is precisely cut into 6 segments as required in one go, while meeting the required cutting length, which greatly improves the cutting efficiency of fitted sheets.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sheet metal production apparatus, characterized in that, The system includes a base (1), a first cutting component (7), and a second cutting component (8). A limiting cylinder (5) is positioned above the base (1). A first cutting plate (3) and a second cutting plate (6) are positioned on both sides of the limiting cylinder (5). A first moving component is installed inside the base (1) to drive the first cutting plate (3) and the second cutting plate (6) to move towards or away from each other. A rotating component is installed at one end of the limiting cylinder (5) to drive the limiting cylinder (5) to rotate. A side opening (50) is provided on the side of the limiting cylinder (5) near the first cutting plate (3). A clamping component is installed inside the side opening (50). Two sets of first cutting components (7) are installed in the middle of the inner side of the first cutting plate (3). A set of first cutting components (7) is provided in the middle of the inner side of the second cutting plate (6), and a set of second cutting components (8) is provided in the bottom of the inner side of the second cutting plate (6). The first cutting component (7) includes a first housing (71), a first cutting blade (76) and a second moving component. The second moving component is used to drive the first cutting blade (76) to move along the axial direction of the first cutting plate (3) or the second cutting plate (6). The second cutting component (8) includes a second housing (81), two sets of second cutting blades (85) and a third moving component. The third moving component is used to drive the two sets of second cutting blades (85) to move towards each other or away from each other along the axial direction of the second cutting plate (6). The first cutting plate (3) has two first openings (30) in the middle of its inner side, and a first cutting component (7) is fixedly installed in each first opening (30). The second cutting plate (6) has a third opening (61) in the middle of its inner side, and a second opening (60) in the end of its inner side. A first cutting component (7) is fixedly installed in the third opening (61), and a second cutting component (8) is fixedly installed in the second opening (60). The limiting cylinder (5) is hollow. The inner surfaces of the first cutting plate (3) and the second cutting plate (6) are arc-shaped and match the outer surface of the limiting cylinder (5). The cutting direction of the second cutting blade (85) is set in the R direction, which is the circumferential direction of the inner surface of the second cutting plate (6). The cutting direction of the first cutting blade (76) is set in the axial direction of the first cutting plate (3) or the second cutting plate (6).

2. The sheet metal production apparatus according to claim 1, characterized in that: The clamping assembly includes a first electric telescopic rod (51) fixedly installed inside the side opening (50) and two sets of fabric clamps (52) near the side opening (50). The output rod of the first electric telescopic rod (51) is fixedly connected to the fabric clamps (52) through a fixing plate.

3. The sheet metal production apparatus according to claim 2, characterized in that: The rotating assembly includes a mounting bracket (4) fixedly connected to one side of the base (1). A second drive motor (41) is fixedly installed on the mounting bracket (4) near the limiting cylinder (5). The output end of the second drive motor (41) is fixedly connected to the center of one end of the limiting cylinder (5).

4. The sheet metal production apparatus according to claim 3, characterized in that: The bottom of the second top shell (83) is fixedly installed with a third electric telescopic rod (84), the top output rod of the third electric telescopic rod (84) is fixedly connected to the bottom of the second cutting blade (85), the bottom of the first top shell (74) is fixedly installed with a second electric telescopic rod (75), and the top output rod of the second electric telescopic rod (75) is fixedly installed with a first cutting blade (76).

5. The sheet metal production apparatus according to claim 4, characterized in that: The first moving component includes a first drive motor (11) fixedly installed on one side of the inner wall of the base (1). The output end of the first drive motor (11) is fixedly connected to a first threaded rod (12). The surface of the first threaded rod (12) is symmetrically threaded with two sets of first nut blocks (13). The top ends of the two first nut blocks (13) are fixedly connected to a connecting frame (2). One end of one of the connecting frames (2) is fixedly connected to the outside of the first cutting plate (3), and one end of the other connecting frame (2) is fixedly connected to the outside of the second cutting plate (6). The top of the base (1) is provided with a first limiting slot (10).

6. The sheet metal production apparatus according to claim 5, characterized in that: The second moving component includes a third drive motor (72) fixedly installed on one side of the inner wall of the first housing (71). The output shaft of the third drive motor (72) is fixedly connected to a second threaded rod (73). A second screw block (77) is threadedly connected to the second threaded rod (73). The top of the second screw block (77) is fixedly connected to the bottom of the first top shell (74). A second limiting slot (70) is provided on the top of the first housing (71).

7. The sheet metal production apparatus according to claim 6, characterized in that: The third moving component includes a fourth drive motor (82) fixedly installed on one side of the inner wall of the second housing (81). The output end of the fourth drive motor (82) is fixedly connected to a third threaded rod (86). The surface of the third threaded rod (86) is symmetrically threaded with two sets of third nut blocks (87). The top ends of the two third nut blocks (87) are fixedly connected to the bottom end of the second top shell (83). The top of the second housing (81) is provided with a third limiting slot (80).

8. A method for producing a fitted sheet, characterized in that: Using the fitted sheet production apparatus of claim 7, the method includes the following steps: Step 1: Fix the fitted sheet: Roll the fitted sheet to be cut into the surface of the limiting tube (5), and then insert both ends of the fitted sheet into the inside of the limiting tube (5) through the side opening (50). Tighten the two ends of the fitted sheet by the clamping assembly to keep the fitted sheet in a taut state. Step 2, Fitting the fitted sheet: The first moving component drives the first cutting plate (3) and the second cutting plate (6) to move in opposite directions, so that the inner surfaces of the first cutting plate (3) and the second cutting plate (6) are fitted with the fitted sheet; Step 3: Adjust the cutting position: The two second cutting blades (85) are moved towards each other or away from each other by the third moving component, and the two second cutting blades (85) are adjusted to the designated cutting positions on both sides of the fitted sheet; Step 4, Cutting blade contacts the fitted sheet: Control the third electric telescopic rod (84) to move the second cutting blade (85) towards the fitted sheet, so that the second cutting blade (85) contacts the fitted sheet; Control the second electric telescopic rod (75) to move the first cutting blade (76) towards the fitted sheet, so that the first cutting blade (76) contacts the fitted sheet. Step 5, Cutting the fitted sheet: Drive the limiting cylinder (5) to rotate one revolution by rotating the assembly, and finally align the side opening (50) on the limiting cylinder (5) with the inner center of the first cutting plate (3); Step 6: Separate the fitted sheet: The first cutting blade (76) in the first cutting assembly (7) is moved along the axis of the first cutting plate (3) and the second cutting plate (6) by the second moving assembly, so that the two ends of the fitted sheet are flattened and the middle part of the fitted sheet is cut and separated.

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