A winding and reeling device for the production and processing of elastic meltblown fabric
By designing a winding and winding device for meltblown fabric production, the winding device can be replaced without stopping the conveying device, and the problem of inefficient production in the prior art is solved.
Patent Information
- Application Number
- CN202411649189.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2044-11-19
AI Technical Summary
After successfully winding out one roll, the existing winding device needs to stop the conveyor and remove the rolled meltblown cloth and then rewind it again, resulting in low production efficiency.
A winding and winding equipment for the production and processing of elastic meltblown cloth is designed. By rotating and moving the rotating tube, the winding tube is driven to rotate and winding the meltblown cloth, and the coiling device and the cutting device are used to replace the winding device without stopping the conveying device.
The winding device can be replaced without stopping the conveying device, which improves production efficiency and avoids production interruptions caused by equipment pause during meltblown cloth winding.
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Figure CN119218784B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of winding equipment, and in particular to a winding and reeling equipment for producing and processing elastic meltblown fabrics. Background Art
[0002] Meltblown cloth is a non-woven filter material made of polypropylene as the main raw material. Meltblown cloth is used for the filter layer in the middle of the mask and is the core raw material for producing masks. Its fiber diameter can reach 1 to 5 microns. Meltblown cloth has excellent filtering, shielding, insulation and oil absorption properties. It can be used in air, liquid filter materials, isolation materials, absorption materials, mask materials, thermal insulation materials and wiping cloths. In the production of meltblown cloth, it is necessary to use a winding equipment to wind the meltblown cloth. However, most of the existing winding devices need to stop the conveying device after successfully winding out a roll, remove the rolled meltblown cloth and then wind the meltblown cloth again, which will affect production efficiency. Summary of the invention
[0003] In view of the shortcomings of the prior art, the present invention provides a winding and reeling device for the production and processing of elastic meltblown fabric, which has the advantages of being able to replace the winding device without stopping the conveying device, etc., and solves the problem that the meltblown fabric needs to be wound up by a winding device during production. However, most of the existing winding devices need to stop the conveying device after successfully winding up a roll, take off the rolled meltblown fabric, and then wind up the meltblown fabric again, which affects the production efficiency.
[0004] In order to achieve the above-mentioned purpose of replacing the winding device without stopping the conveying device, the present invention provides the following technical solutions: a winding and reeling device for producing and processing elastic meltblown fabrics, comprising a bottom plate, two support plates are fixedly installed on the upper side of the bottom plate, a cross bar is arranged between the two support plates, the left and right ends of the cross bar are respectively fixedly connected to the two support plates, a rotating tube is movably sleeved on the cross bar, three groups of connecting strips are fixedly installed on the rotating tube, each group of connecting strips is provided with a winding tube, and two circular plates are arranged on the three winding tubes, a cutting device is fixedly installed on the front of the two support plates, and a cutting knife is arranged on the cutting device, a support bar is fixedly installed on the side of the two support plates close to each other, two telescopic devices are fixedly installed on the upper side of the two support bars, the output shafts of the four telescopic devices respectively movably penetrate the two support bars, and lifting bars are arranged below the two support bars, and the lower ends of the output shafts of the four telescopic devices on the upper side of the two lifting bars are fixedly connected, and a group of rotary drives are fixedly installed on the lower sides of the two lifting bars, and a rotating block is fixedly installed on the output shaft of each rotary drive, and power belts are movably sleeved on the two groups of rotating blocks.
[0005] Preferably, the side walls of the three winding tubes are provided with a plurality of through grooves, each through groove is provided with a small column, each small column is fixedly mounted with a conical block, each small column is fixedly mounted with a hemispherical block, and each winding tube is movably connected with a moving rod.
[0006] Preferably, each of the small columns is provided with an annular wall groove, each annular wall groove is movably connected with a small ring, each small ring is fixedly installed with a pressure spring, each pressure spring is fixedly connected to each annular wall groove at one end close to the inner walls of the three winding tubes, and each small ring is fixedly connected to the inner wall of each through groove.
[0007] Preferably, both ends of the three moving rods are provided with slots, each slot is movably connected with a block via a hinge, and each block is provided with a finger groove.
[0008] Preferably, a thin rod is provided between the two support bars, and both ends of the thin rod are fixedly connected to the sides of the two support bars close to each other. A plurality of small tubes are movably sleeved on the thin rod, and a pressure bar is fixedly installed on each small tube.
[0009] Preferably, a group of small blocks are fixedly mounted on the front sides of the two support plates, vertical rods are fixedly passed through the two groups of small blocks, movable tubes are movably sleeved on the two vertical rods, and blocking bars are fixedly mounted on the two movable tubes.
[0010] Preferably, a connecting half ring a is fixedly mounted on each of the connecting strips, each connecting half ring a is movably connected to a connecting half ring b via a hinge, and each connecting half ring a and two connecting half rings b are fixedly mounted with a connecting block.
[0011] Preferably, each connecting block on the connecting half ring a is threaded with a bolt, and each bolt is threaded through the connecting block on each connecting half ring b. The inner walls of each connecting half ring a and each connecting half ring b are provided with an arc-shaped wall groove, and a number of small rods are fixedly installed in each arc-shaped wall groove, and a thin tube is movably sleeved on each small rod.
[0012] Compared with the prior art, the present invention provides a winding and reeling device for the production and processing of elastic meltblown fabric, which has the following beneficial effects:
[0013] The winding and reeling equipment for producing and processing the elastic meltblown fabric drives one of the winding tubes to move under the two power belts by rotating and moving the rotating tube, and then squeezes the power belt so that the rotating block can be driven by the rotation drive, so that the winding tube can be driven by the power belt to rotate and reel in the meltblown fabric. After a certain amount of the meltblown fabric is reeled in, the two lifting bars are driven upward by the telescopic device, so that the two power belts can be driven upward, so that the rotating tube can be rotated, and the cutting device is used to drive the blade to cut the meltblown step, so that the cut meltblown fabric will fall down, and the rotating tube continues to rotate, so that the next winding tube can be driven to rotate and move upward to catch the meltblown step, and the telescopic device drives the power belt to move downward to contact the next winding tube, so that the next winding tube can be driven to rotate and reel in the meltblown fabric, so that the winding device can be replaced without stopping the conveying device.
[0014] The winding and reeling equipment for producing and processing the elastic meltblown fabric can pierce the meltblown fabric after the winding tube moves upward to catch the meltblown fabric through the conical block on each small column, so that the meltblown fabric can be rolled onto the winding tube when the winding tube rotates, thereby avoiding the situation where the winding tube cannot be wound.
[0015] The winding and reeling equipment for producing and processing the elastic meltblown cloth can squeeze the hemispherical block by inserting the moving rod into the winding tube, thereby driving each small column to move out of the through slot respectively, thereby driving each conical block to move out of the through slot, so that the conical block can be used to drive the meltblown cloth to be rolled onto the winding tube. At the same time, when the rolled meltblown cloth needs to be removed, after the moving rod is pulled out, the rebound of the pressure spring will drive each conical block to move into the through slot, so that the winding tube can be pulled out.
[0016] The winding and reeling device for producing and processing the elastic meltblown fabric can rotate the moving block away from the moving rod when the moving rod is inserted and pulled back and forth through the block on each moving rod, so that the moving rod can be pulled out by using the finger groove on the block, thereby improving the practicability of the device.
[0017] The winding and reeling equipment for producing and processing the elastic meltblown cloth can use the gravity of the pressure bars to press the meltblown cloth downward when the winding tube moves upward to catch the meltblown cloth, thereby ensuring that the conical block can pierce the meltblown cloth, so that the winding tube can smoothly roll up the meltblown cloth.
[0018] The winding and reeling equipment for producing and processing the elastic meltblown fabric can rotate and move the two blocking bars away from each other, so that the rotating tube can rotate. When the first winding tube passes through the two blocking bars, the two blocking bars are restored to their original positions. In this way, the two blocking bars can be used to block the next winding tube, thereby facilitating positioning by users.
[0019] 7. The winding and reeling equipment for producing and processing the elastic meltblown fabric can open the connecting half ring b by rotating and removing the bolt, so that the winding tube can be removed, which makes it convenient for users to replace the winding tube back and forth. At the same time, the thin tube on each small rod can reduce the friction between each connecting half ring a and each connecting half ring b and each winding tube, thereby avoiding the situation where the winding tube is difficult to rotate due to excessive friction. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention;
[0021] Figure 2 For the present invention Figure 1 Schematic diagram of the three-dimensional structure of the middle lifting strip;
[0022] Figure 3 For the present invention Figure 1 Schematic diagram of the three-dimensional structure of the middle thin rod;
[0023] Figure 4 For the present invention Figure 1 A schematic diagram of the three-dimensional structure of the middle barrier strip;
[0024] Figure 5 For the present invention Figure 1 Schematic diagram of the structure of the connecting semi-ring a;
[0025] Figure 6 For the present invention Figure 1 Schematic diagram of the three-dimensional structure of the middle coiling tube;
[0026] Figure 7 For the present invention Figure 6 Schematic diagram of the three-dimensional structure of the middle cone block.
[0027] In the figure: 1, bottom plate; 2, rotating tube; 3, cross bar; 4, support plate; 5, cutting knife; 6, cutting device; 7, small rod; 8, support bar; 9, telescopic device; 10, thin rod; 11, lifting bar; 12, power belt; 13, blocking bar; 14, connecting bar; 15, connecting semi-ring a; 16, winding tube; 17, small tube; 18, pressure bar; 19, vertical rod; 20, small block; 21, movable tube; 22, rotating block; 23, rotating drive; 24, arc wall groove; 25, connecting block; 26, bolt; 27, thin tube; 28, through groove; 29, tapered block; 30, moving rod; 31, notch; 32, block; 33, finger groove; 34, small ring; 35, hemispherical block; 36, pressure spring; 37, annular wall groove; 38, circular ring plate; 39, small column; 40, connecting semi-ring b. DETAILED DESCRIPTION
[0028] The present invention is further described in detail below in conjunction with the accompanying drawings, wherein the same components are represented by the same figure numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower", "bottom surface" and "top surface" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.
[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0030] See also Figure 1-Figure 7The present invention provides a technical solution: a winding and reeling device for the production and processing of elastic melt-blown fabrics, comprising a bottom plate 1, two support plates 4 are fixedly installed on the upper side of the bottom plate 1, a cross bar 3 is arranged between the two support plates 4, the left and right ends of the cross bar 3 are respectively fixedly connected with the two support plates 4, a rotating tube 2 is movably sleeved on the cross bar 3, three groups of connecting strips 14 are fixedly installed on the rotating tube 2, each group of connecting strips 14 is provided with a winding tube 16, and two circular plates 38 are arranged on the three winding tubes 16, a cutting device 6 is fixedly installed on the front of the two support plates 4, and a cutting knife 5 is arranged on the cutting device 6, a support bar 8 is fixedly installed on the side of the two support plates 4 close to each other, two telescopic devices 9 are fixedly installed on the upper sides of the two support bars 8, and the output of the four telescopic devices 9 The output shafts respectively movably penetrate the two support bars 8, and a lifting bar 11 is arranged under the two support bars 8. The lower ends of the output shafts of the four telescopic devices 9 on the upper sides of the two lifting bars 11 are fixedly connected. A group of rotary drives 23 are fixedly installed on the lower sides of the two lifting bars 11. A rotating block 22 is fixedly installed on the output shaft of each rotary drive 23. A power belt 12 is movably sleeved on the two groups of rotary blocks 22. By rotating and moving the rotating tube 2, one of the winding tubes 16 is driven to move under the two power belts 12, and then the rotating tube 16 is squeezed by the power belt 12. In this way, the rotating block 22 can be driven by the rotary drive 23, so that the winding tube 16 can be driven by the power belt 12 to rotate and wind up the melt-blown cloth. When the melt-blown cloth is wound up a certain amount, the telescopic device 9 is used to drive The two lifting bars 11 move upward, thereby driving the two power belts 12 to move upward, so that the rotating tube 2 can be rotated, and the cutting device 6 is used to drive the blade 5 to cut the meltblown step, so that the cut meltblown cloth will fall down, and the rotating tube 2 continues to rotate, so that the next winding tube 16 can be driven to rotate upward to catch the meltblown step, and at the same time, the telescopic device 9 drives the power belt 12 to move downward to contact the next winding tube 16, so that the next winding tube 16 can be driven to rotate and wind the meltblown cloth, so that the winding device can be replaced without stopping the conveying device. The side walls of the three winding tubes 16 are provided with a plurality of through grooves 28, each of which is provided with a small column 39, and each small column 39 is fixedly installed with a conical block 29, a hemispherical block 35 is fixedly installed on each small column 39, and a moving rod 30 is movably connected in each winding tube 16. Through the conical block 29 on each small column 39, the winding tube 16 can move upward to catch the meltblown cloth and then pierce the meltblown cloth, so that the meltblown cloth can be rolled into the winding tube 16 when the winding tube 16 rotates, thereby avoiding the situation that the winding tube 16 cannot be wound. An annular wall groove 37 is opened on each small column 39, and a small ring 34 is movably connected in each annular wall groove 37. A pressure spring 36 is fixedly installed on each small ring 34, and each pressure spring 36 is respectively fixedly connected to each annular wall groove 37 at one end close to the inner wall of the three winding tubes 16, and each small ring 34 is respectively fixedly connected to the inner wall of each through groove 28.By inserting the moving rod 30 into the winding tube 16, the hemispherical block 35 can be squeezed, so that each small column 39 can be driven to move out of the through slot 28 respectively, so that each conical block 29 can be driven to move out of the through slot 28, so that the conical block 29 can be used to drive the meltblown cloth to be rolled onto the winding tube 16. At the same time, when the rolled meltblown cloth needs to be removed, after the moving rod 30 is pulled out, the rebound of the pressure spring 36 will drive each conical block 29 to move into the through slot 28, so that the winding tube 16 can be pulled out. Notches 31 are provided at both ends of the three moving rods 30, and each notch 31 is movably connected with a block 32 through a hinge. Each block 32 is provided with a finger groove 33. Through the block 32 on each moving rod 30, When the moving rod 30 is inserted and pulled out, the moving block 32 is rotated in the direction away from the moving rod 30, so that the moving rod 30 can be pulled out by using the finger groove 33 on the block 32, thereby improving the practicality of the device. A thin rod 10 is arranged between the two support bars 8, and the two ends of the thin rod 10 are respectively fixedly connected to the side of the two support bars 8 close to each other. A plurality of small tubes 17 are movably sleeved on the thin rod 10, and a pressure bar 18 is fixedly installed on each small tube 17. Through each pressure bar 18, when the winding tube 16 moves upward to catch the meltblown cloth, the meltblown cloth can be pressed downward by the gravity of the pressure bar 18, thereby ensuring that the conical block 29 can pierce the meltblown cloth, so that the winding tube 16 can smoothly roll up the meltblown cloth, and the front sides of the two support plates 4 are fixedly installed with A group of small blocks 20, both groups of small blocks 20 are fixedly penetrated by vertical rods 19, both vertical rods 19 are movably sleeved with movable tubes 21, both movable tubes 21 are fixedly installed with blocking bars 13, and the two blocking bars 13 are rotated and moved in the direction away from each other, so that the rotating tube 2 can be rotated, and when the first winding tube 16 passes through the two blocking bars 13, the two blocking bars 13 are restored to their original positions, so that the two blocking bars 13 can be used to block the next winding tube 16, so that it is convenient for users to position, and each connecting bar 14 is fixedly installed with a connecting semi-ring a15, and each connecting semi-ring a15 is movably connected to a connecting semi-ring b40 through a hinge, and each connecting semi-ring a15 is fixedly installed with two connecting semi-rings b40 There is a connecting block 25, and a bolt 26 is threaded through the connecting block 25 on each connecting semi-ring a15, and each bolt 26 is threaded through the connecting block 25 on each connecting semi-ring b40. An arc-shaped wall groove 24 is provided on the inner wall of each connecting semi-ring a15 and each connecting semi-ring b40, and a plurality of small rods 7 are fixedly installed in each arc-shaped wall groove 24. A thin tube 27 is movably sleeved on each small rod 7. By rotating and removing the bolt 26, the connecting semi-ring b40 can be opened, so that the winding tube 16 can be removed, so that the user can replace the winding tube 16 back and forth. At the same time, the thin tube 27 on each small rod 7 can reduce the friction between each connecting semi-ring a15 and each connecting semi-ring b40 and each winding tube 16.This can avoid the situation where the reel tube 16 is difficult to rotate due to excessive friction.
[0031] When in use, the first step is to rotate and move the rotating tube 2 to drive one of the winding tubes 16 to move under the two power belts 12, and then make the rotating tube 16 squeeze the power belt 12, so that the rotating block 22 can be driven by the rotation drive 23, so that the winding tube 16 can be driven by the power belt 12 to rotate and wind the meltblown cloth. After the meltblown cloth is wound up a certain amount, the telescopic device 9 is used to drive the two lifting bars 11 to move upward, so that the two power belts 12 can be driven to move upward, so that the rotating tube 2 can be rotated, and the cutting device 6 is used to drive the blade 5 to cut the meltblown step, so that the cut meltblown cloth will fall down, and the rotating tube 2 continues to rotate, so that the next winding tube 16 can be driven to rotate and move upward to catch the meltblown step, and the telescopic device 9 drives the power belt 12 to move downward and contact the next winding tube 16, so that the next winding tube 16 can be driven to rotate and wind the meltblown cloth, so that the winding device can be replaced without stopping the conveying device.
[0032] Step 2: Through the conical block 29 on each small column 39, the meltblown cloth can be pierced after the winding tube 16 moves upward to catch the meltblown cloth, so that the meltblown cloth can be rolled onto the winding tube 16 when the winding tube 16 rotates, thereby avoiding the situation where the winding tube 16 cannot be wound.
[0033] Step 3: By inserting the moving rod 30 into the winding tube 16, the hemispherical block 35 can be squeezed, so that each small column 39 can be driven to move out of the through slot 28 respectively, so that each conical block 29 can be driven to move out of the through slot 28, so that the conical block 29 can be used to drive the meltblown cloth to be rolled onto the winding tube 16. At the same time, when the rolled meltblown cloth needs to be removed, after the moving rod 30 is pulled out, the rebound of the pressure spring 36 will drive each conical block 29 to move into the through slot 28, so that the winding tube 16 can be pulled out.
[0034] Step 4: Through the block 32 on each moving rod 30, the moving block 32 can be rotated in the direction away from the moving rod 30 when the moving rod 30 is inserted and pulled back and forth, so that the moving rod 30 can be pulled out using the finger groove 33 on the block 32, thereby improving the practicality of the device.
[0035] Step 5: When the winding tube 16 moves upward to catch the meltblown cloth, each pressure bar 18 can use the gravity of the pressure bar 18 to press the meltblown cloth downward, thereby ensuring that the conical block 29 can pierce the meltblown cloth, so that the winding tube 16 can smoothly roll up the meltblown cloth.
[0036] Step 6: By rotating and moving the two blocking bars 13 in the direction away from each other, the rotating tube 2 can be rotated. When the first winding tube 16 passes through the two blocking bars 13, the two blocking bars 13 are restored to their original positions. In this way, the two blocking bars 13 can be used to block the next winding tube 16, thereby facilitating positioning by the user.
[0037] Step 7: After rotating and removing the bolt 26, the connecting half ring b40 can be opened, so that the winding tube 16 can be removed, which makes it convenient for the user to replace the winding tube 16 back and forth. At the same time, the thin tube 27 on each small rod 7 can reduce the friction between each connecting half ring a15 and each connecting half ring b40 and each winding tube 16, thereby avoiding the situation where the winding tube 16 is difficult to rotate due to excessive friction.
[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A winding and reeling device for producing and processing elastic meltblown fabric, comprising a bottom plate (1), characterized in that: Two support plates (4) are fixedly mounted on the upper side of the bottom plate (1), a cross bar (3) is arranged between the two support plates (4), the left and right ends of the cross bar (3) are respectively fixedly connected to the two support plates (4), a rotating tube (2) is movably sleeved on the cross bar (3), three groups of connecting bars (14) are fixedly mounted on the rotating tube (2), each group of connecting bars (14) is provided with a winding tube (16), and two annular plates (38) are arranged on the three winding tubes (16), cutting devices (6) are fixedly mounted on the front sides of the two support plates (4), and a cutting knife (5) is arranged on the cutting device (6), and the two support plates (4) are close to each other. A support bar (8) is fixedly installed on the near side, two telescopic devices (9) are fixedly installed on the upper sides of the two support bars (8), the output shafts of the four telescopic devices (9) are movably penetrated through the two support bars (8), a lifting bar (11) is arranged below the two support bars (8), the upper sides of the two lifting bars (11) are respectively fixedly connected to the lower ends of the output shafts of the four telescopic devices (9), a group of rotary drives (23) are fixedly installed on the lower sides of the two lifting bars (11), a rotary block (22) is fixedly installed on the output shaft of each rotary drive (23), and a power belt (12) is movably sleeved on the two groups of rotary blocks (22); The side walls of the three winding tubes (16) are each provided with a plurality of through grooves (28), each through groove (28) is provided with a small column (39), each small column (39) is fixedly mounted with a conical block (29), each small column (39) is fixedly mounted with a hemispherical block (35), and each winding tube (16) is movably connected with a moving rod (30); Each of the small columns (39) is provided with an annular wall groove (37), each annular wall groove (37) is movably connected with a small ring (34), each small ring (34) is fixedly mounted with a pressure spring (36), one end of each pressure spring (36) close to the inner wall of the three winding tubes (16) is fixedly connected to each annular wall groove (37), and each small ring (34) is fixedly connected to the inner wall of each through groove (28).
2. The winding and reeling equipment for producing and processing elastic meltblown fabric according to claim 1 is characterized in that: Both ends of the three moving rods (30) are provided with slots (31), each slot (31) is movably connected to a block (32) via a hinge, and each block (32) is provided with a finger groove (33).
3. The winding and reeling equipment for producing and processing elastic meltblown fabric according to claim 1 is characterized in that: A thin rod (10) is provided between the two support bars (8), and the two ends of the thin rod (10) are respectively fixedly connected to the sides of the two support bars (8) that are close to each other. A plurality of small tubes (17) are movably sleeved on the thin rod (10), and a pressure bar (18) is fixedly mounted on each small tube (17).
4. The winding and reeling equipment for producing and processing elastic meltblown fabric according to claim 1 is characterized in that: A group of small blocks (20) are fixedly mounted on the front of the two support plates (4), a vertical rod (19) is fixedly passed through the two groups of small blocks (20), a movable tube (21) is movably sleeved on the two vertical rods (19), and a blocking strip (13) is fixedly mounted on the two movable tubes (21).
5. The winding and reeling equipment for producing and processing elastic meltblown fabric according to claim 1 is characterized in that: A connecting half ring a (15) is fixedly mounted on each of the connecting strips (14), each connecting half ring a (15) is movably connected to a connecting half ring b (40) via a hinge, and each connecting half ring a (15) and two connecting half rings b (40) are fixedly mounted with a connecting block (25).
6. The winding and reeling equipment for producing and processing elastic meltblown fabric according to claim 5 is characterized in that: A bolt (26) is threadedly penetrated through the connection block (25) on each of the connection semi-rings a (15), and each of the bolts (26) is threadedly penetrated through the connection block (25) on each of the connection semi-rings b (40). An arc-shaped wall groove (24) is formed on the inner side wall of each of the connection semi-rings a (15) and each of the connection semi-rings b (40). A plurality of small rods (7) are fixedly installed in each of the arc-shaped wall grooves (24), and a thin tube (27) is movably sleeved on each of the small rods (7).
Citation Information
Patent Citations
Winding equipment for printing adhesive tape production
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Slitting and winding device for melt-blown cloth
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