Petals magic tape forming device and method

Abstract

The application relates to a petal-shaped magic tape forming device and method and belongs to the technical field of magic tape forming equipment. The device comprises an extruder connected with a screen changer, the other end of the screen changer connected with a machine neck connector, the machine neck connector connected with a machine head, and a forming mechanism placed below the machine head. Raw materials are extruded through the screen changer, the machine neck connector and the machine head to the gap between a forming roller and an extrusion roller by the extruder, a servo motor drives the forming roller, the extrusion roller, a stripping guide roller and a shaping roller to rotate, the extrusion roller extrudes the raw materials into magic tape forming holes, water is supplied at the rotary joint to cool the forming roller, and then the magic tape is shaped by the stripping guide roller and the shaping roller, a mold temperature controller controls the temperature in the process, and the petal-shaped magic tape is manufactured, so that the operation is simple and convenient.

Description

Technical Field

[0001] This invention relates to a petal-shaped hook and loop fastener forming apparatus and method, belonging to the technical field of hook and loop fastener forming equipment. Background Technology

[0002] Hook and loop fasteners, as a common type of connector, are widely favored due to their flexibility, ease of use, simple structure, simple production methods, and low manufacturing costs, leading to their increasingly widespread use in our lives. Currently, hook and loop fasteners are widely used in aerospace, industry, home decoration, clothing, automotive decoration, medical devices, and other fields. There are many types and production methods of hook and loop fasteners both domestically and internationally. For example, knitted hook and loop fasteners are made by passing nylon yarn through a raw tape and then using methods such as napping, hook breaking, and shaping to make them sticky. However, with prolonged use, the yarn hooks will straighten, reducing the lifespan of the fastener. Mushroom-shaped hook and loop fasteners use an electric heating wire ironing method to iron the PP monofilaments on the surface of the raw tape into a ball shape, making them sticky. This type of fastener has a longer lifespan, but because the mushroom head is spherical, the peeling force is not strong. Currently, the adhesive strength and number of bonding cycles of domestically produced hook and loop fasteners are relatively low. After prolonged and frequent use, the bonding effect is poor and cannot meet practical needs. To address the issues of lifespan and increased peeling force of hook and loop fasteners, this invention proposes a petal-shaped hook and loop fastener. This fastener is made of polymer materials such as PP, PET, and nylon, and has a petal-shaped top. When the hook and loop fasteners are pressed together, the reverse hooking action makes them difficult to separate. The challenge of this invention lies in how to shape the petal-shaped hook and loop fastener. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention discloses a petal-shaped hook and loop fastener forming device and method. Molten polymer raw materials are extruded into a specially designed forming roller through an extruder head. After molding and subsequent shaping and cooling, petal-shaped hook and loop fasteners are produced.

[0004] The technical solution adopted in this invention is a petal-shaped hook and loop fastener forming device, including an extruder, a screen changer, a neck connector, a die head, and a forming mechanism. The extruder is connected to the screen changer, the other end of the screen changer is connected to the neck connector, the neck connector is connected to the die head, and the forming mechanism is placed below the die head.

[0005] Furthermore, the forming mechanism includes a forming roller, an extrusion roller, a peeling guide roller, and a shaping roller mounted on a frame. The forming roller is located between the extrusion roller and the peeling guide roller, and the shaping roller is located above the peeling guide roller. The forming roller, extrusion roller, peeling guide roller, and shaping roller are all driven by servo motors, and each of them is equipped with a mold temperature controller.

[0006] Furthermore, the frame is also provided with a first adjustment part for adjusting the gap between the forming roller and the extrusion roller, a second adjustment part for adjusting the gap between the forming roller and the peeling guide roller, and a third adjustment part for adjusting the gap between the setting roller and the peeling guide roller.

[0007] Furthermore, the first adjustment part, the second adjustment part, and the third adjustment part are all composed of a lead screw and a nut. The nut is sleeved on the lead screw, and each nut is fixedly connected to the extrusion roller, the peeling guide roller, and the shaping roller, respectively. The nut can be moved along the lead screw axis by rotating the lead screw.

[0008] Furthermore, the molding device also includes a lifting mechanism and a traveling mechanism; the lifting mechanism is used to adjust the height of the frame, and the traveling mechanism is used to drive the frame to move.

[0009] Furthermore, the lifting mechanism is a chain-type lifting machine, which consists of a lifting machine, a drive motor, and a lifting chain. The drive motor is mounted on the frame, the lifting machine is mounted on the base, the lifting screw of the lifting machine is connected to the frame, and the lifting machine is connected to the drive motor through the lifting chain. Under the drive of the drive motor, the lifting screw of the lifting machine is driven to rise or fall.

[0010] Furthermore, the walking mechanism includes a walking motor, a transmission chain, and walking wheels. The walking motor is mounted on the frame, and the walking wheels are mounted below the base. The walking motor is connected to the walking wheels through the transmission chain, and the walking wheels move horizontally under the drive of the walking motor.

[0011] Furthermore, the forming roller includes a roller body, a first vertical plate, a second vertical plate, a first flange, a second flange, a third flange, a first bearing, and a second bearing. The first bearing and the second bearing are respectively sleeved on both ends of the roller body. The first flange is sleeved on the first bearing, and the second flange is connected to the first flange. The first vertical plate is sleeved on the first flange and the second flange and fixed with bolts. The third flange is sleeved on the second bearing, and the second vertical plate is fixed to the third flange with bolts. The roller body has multiple flow channels, and the outer surface of the roller body has several rows of Velcro forming holes. Any three adjacent rows of Velcro forming holes that are closest to each other are staggered in a triangular pattern.

[0012] Furthermore, the Velcro forming hole extends from the outside to the inside and is divided into a root, a stamen, and a petal. The bottom end of the root is the stamen, and the petal is symmetrically arranged on the side of the stamen.

[0013] Furthermore, the spacing between adjacent hook and loop forming holes in the same row is not less than twice the root width and not more than three times the root width; the spacing between adjacent rows of hook and loop forming holes is greater than once the root width and not more than twice the root width; and the root width of each hook and loop forming hole is greater than twice the petal width.

[0014] Furthermore, the forming roller is connected to the rotary joint.

[0015] This invention also discloses a molding method using a petal-shaped hook and loop fastener molding device. The raw material is extruded and cast into the gap between the forming roller and the extrusion roller through a screen changer, a neck connector, and a die head via an extruder. A servo motor drives the forming roller, the extrusion roller, the peeling guide roller, and the shaping roller to rotate. The extrusion roller squeezes the raw material into the hook and loop fastener forming hole. Water is passed through the rotary joint to cool the forming roller. Then, the material is shaped by the peeling guide roller and the shaping roller to form a petal-shaped hook and loop fastener. The temperature is controlled by a mold temperature controller during the process.

[0016] This invention discloses a petal-shaped hook and loop fastener forming device and method. Its advantages are that molten polymer raw materials are extruded into the forming roller through the extruder head, and petal-shaped hook and loop fasteners are produced by passing through the forming roller, the peeling guide roller and the shaping roller. The operation is simple and convenient. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 The diagram shown is a schematic representation of the structure and process in Example 1.

[0019] Figure 2 As shown Figure 1 Schematic diagram of the forming mechanism;

[0020] Figure 3 As shown Figure 2 Schematic diagram of the middle forming roller;

[0021] Figure 4 for Figure 3 Enlarged diagram of the forming hole for Velcro;

[0022] Figure 5 for Figure 4 Schematic diagram of the inside of the AA-section Velcro forming hole;

[0023] Figure 6 This is a schematic diagram of a petal-shaped hook and loop fastener product.

[0024] As shown in the figure:

[0025] 1. Roller body; 2. First vertical plate; 3. First flange; 4. Second flange; 5. Third flange; 6. Second vertical plate; 7. Servo motor; 8. First bearing; 9. Second bearing; 10. Bolt; 11. Velcro forming hole; 12. Rotary joint; 14. Lead screw; 15. Nut; 16. Forming roller; 17. Extrusion roller; 18. Peeling guide roller; 19. Shaping roller; 20. First adjusting part; 21. Second adjusting part; 22. Third adjusting part; 23. Frame; 24. Drive motor; 25. Lifting... 26. Lowering chain; 27. Lifting machine; 28. Traveling motor; 29. ​​Transmission chain; 30. Traveling wheel; 31. Extruder; 32. Screen changer; 33. Neck connector; 34. Machine head; 35. Forming mechanism; 36. Cooling device; 37. Edge trimming device; 38. Traction device; 39. Fabric storage device; 40. Cutting device; 41. Winding device; 42. Base; 43. Lifting screw; 44. Base plate; 45. Root; 46. Stamen; 47. Petal; c. Root width; d. Petal width. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] To further understand the invention, the following detailed description, in conjunction with specific embodiments, further illustrates the invention.

[0028] Example 1:

[0029] like Figures 1-6 As shown, this embodiment provides a petal-shaped hook and loop fastener forming device, including an extruder 30, a screen changer 31, a neck connector 32, a die head 33, and a forming mechanism 34. The extruder 30 is connected to the screen changer 31, the other end of the screen changer 31 is connected to the neck connector 32, the neck connector 32 is connected to the die head 33, and the forming mechanism 34 is placed below the die head 33.

[0030] The forming mechanism 34 includes a forming roller 16, an extrusion roller 17, a peeling guide roller 18, and a shaping roller 19 mounted on a frame 23. The forming roller 16 is located between the extrusion roller 17 and the peeling guide roller 18. The shaping roller 19 and the peeling guide roller 18 are mounted on the same plate, with the shaping roller 19 located above the peeling guide roller 18. The forming roller 16, the extrusion roller 17, the peeling guide roller 18, and the shaping roller 19 are all driven by a servo motor 7, and each of them is equipped with a mold temperature controller.

[0031] The frame 23 is further provided with a first adjustment part 20 for adjusting the gap between the forming roller 16 and the extrusion roller 17, a second adjustment part 21 for adjusting the gap between the forming roller 16 and the peeling guide roller 18, and a third adjustment part 22 for adjusting the gap between the shaping roller 19 and the peeling guide roller 18. Each of the first, second, and third adjustment parts 22 consists of a lead screw 14 and a nut 15. The nut 15 is sleeved on the lead screw 14, and each nut 15 is fixedly connected to the extrusion roller 17, the peeling guide roller 18, and the shaping roller 19, respectively. By rotating the lead screw 14, the nut 15 moves axially along the lead screw 14, thereby adjusting the gap distance. The thickness of the substrate 43 of the product is controlled by adjusting the gap between the forming roller 16 and the extrusion roller 17; the tilt angle of the product is controlled by adjusting the gap between the forming roller 16 and the peeling guide roller 18; and the traction force during the product movement is controlled by adjusting the gap between the shaping roller 19 and the peeling guide roller 18.

[0032] The molding device also includes a lifting mechanism and a traveling mechanism. A base 41 is provided below the frame 23. The lifting mechanism is used to adjust the vertical height of the frame 23, and the traveling mechanism is used to drive the frame 23 to move horizontally. The lifting mechanism is a chain-type lifting machine, consisting of a lifting machine 26, a drive motor 24, and a lifting chain 25. The drive motor 24 is mounted on the frame 23, and the lifting machine 26 is mounted on the base 41. The lifting screw 42 of the lifting machine 26 is connected to the frame 23, and the lifting machine 26 is connected to the drive motor 24 through the lifting chain 25. Driven by the drive motor 24, the lifting screw 42 of the lifting machine 26 rises or falls. The traveling mechanism includes a traveling motor 27, a transmission chain 28, and traveling wheels 29. The traveling motor 27 is mounted on the frame 23, and the traveling wheels 29 are mounted below the base 41. The traveling motor 27 is connected to the traveling wheels 29 through the transmission chain 28, and driven by the traveling motor 27, the traveling wheels 29 move horizontally. The lifting and traveling mechanisms facilitate transportation and maintenance.

[0033] The forming roller 16 includes a roller body 1, a first vertical plate 2, a second vertical plate 6, a first flange 3, a second flange 4, a third flange 5, a first bearing 8, and a second bearing 9. The first bearing 8 is installed at the left bearing end of the roller body 1, and the second bearing 9 is installed at the right bearing end of the roller body 1. The first flange 3 is sleeved on the first bearing 8, and the second flange 4 is connected to the first flange 3. The first vertical plate 2 is sleeved on the first flange 3 and the second flange 4 and fixed by bolts 10. The third flange 5 is sleeved on the second bearing 9, and the second vertical plate 6 and the third flange 5 are fixed by bolts 10. The roller body 1 has multiple flow channels inside, and the outer surface of the roller body 1 has several rows of Velcro forming holes 11. Any three adjacent rows of Velcro forming holes 11 that are closest to each other are arranged in a staggered triangular pattern.

[0034] The Velcro forming hole 11 extends from the outside to the inside and is divided into a root part 44, a stamen part 45 and a petal part 46. The bottom end of the root part 44 is the stamen part 45, and the petal part 46 is symmetrically arranged on the side of the stamen part 45.

[0035] The spacing between adjacent Velcro forming holes 11 in the same row is not less than 2 times the root width c and not more than 3 times the root width c; the spacing between adjacent rows of Velcro forming holes 11 is greater than 1 times the root width c and not more than 2 times the root width c; the root width c of each Velcro forming hole 11 is greater than 2 times the petal width d.

[0036] This embodiment also discloses a petal-shaped Velcro forming method. First, the lifting mechanism and the traveling mechanism are adjusted to the target position. Second, the gap between the extrusion roller 17 and the forming roller 16 is adjusted by adjusting the first adjusting part 20, the gap between the forming roller 16 and the peeling guide roller 18 is adjusted by the second adjusting part 21, and the gap between the shaping roller 19 and the peeling guide roller 18 is adjusted by the third adjusting part 22. The forming roller 16 is connected to the rotary joint 12, and the servo motor 7 drives the forming roller 16, the extrusion roller 17, the peeling guide roller 18, and the shaping roller 19 to rotate. The forming roller 16 and the extrusion roller 17 rotate towards each other, and the peeling guide roller 18 rotates in opposite directions to the forming roller 16 and the shaping roller 19, respectively. Then, the extruder 30... Molten PP, PET, or nylon raw materials are extruded and cast into the gap between forming roller 16 and extrusion roller 17 through screen changer 31, neck connector 32, and die head 33. Extrusion roller 17 forces the raw material into the Velcro forming hole 11. Water is circulated through rotary joint 12 to cool forming roller 16. Subsequently, the material is shaped by peeling guide roller 18 and shaping roller 19 to form petal-shaped Velcro. During the process, the mold temperature controller controls the temperature. Further cooling and shaping can be performed by cooling device 35, edge trimming device 36 for burr removal, traction device 37 for stretching, fabric storage device 38 for temporary storage, cutting device 39 for cutting to the required specifications and dimensions, and winding device 40 for gathering and packaging, etc. Figure 6 The resulting product is a petal-shaped Velcro.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A petal-shaped hook and loop fastener forming device, characterized in that, The extruder (30), screen changer (31), neck connector (32), die head (33), and forming mechanism (34) are included. The extruder (30) is connected to the screen changer (31), the other end of the screen changer (31) is connected to the neck connector (32), the neck connector (32) is connected to the die head (33), and the forming mechanism (34) is placed below the die head (33). The forming mechanism (34) includes forming roller (16), extrusion roller (17), and peeling guide roller (18) mounted on the frame (23). The forming roller (16) is located between the extrusion roller (17) and the peeling guide roller (18), and the shaping roller (19) is located above the peeling guide roller (18); wherein the forming roller (16), the extrusion roller (17), the peeling guide roller (18) and the shaping roller (19) are all driven by servo motors (7), and the forming roller (16), the extrusion roller (17), the peeling guide roller (18) and the shaping roller (19) are all equipped with mold temperature controllers; the forming roller (16) includes a roller body (1) and a first vertical plate (2). The roller body (1) consists of a second vertical plate (6), a first flange (3), a second flange (4), a third flange (5), a first bearing (8), and a second bearing (9). The first bearing (8) and the second bearing (9) are respectively fitted onto both ends of the roller body (1). The first flange (3) is fitted onto the first bearing (8). The second flange (4) is connected to the first flange (3). The first vertical plate (2) is fitted onto the first flange (3) and the second flange (4) and fixed by bolts (10). The third flange (5) is fitted onto the second bearing (9). Above, the second vertical plate (6) and the third flange (5) are fixed by bolts (10); the roller body (1) is provided with multiple flow channels, and the outer surface of the roller body (1) has several rows of Velcro forming holes (11). The forming roller (16) is connected to the rotary joint (12). The Velcro forming holes (11) extend from the outside to the inside and are divided into a root (44), a stamen (45) and a petal (46). The bottom end of the root (44) is the stamen (45), and the petal (46) is symmetrically arranged on the side of the stamen (45).

2. The petal-shaped hook and loop fastener forming device according to claim 1, characterized in that, The frame (23) is also provided with a first adjustment part (20) for adjusting the gap between the forming roller (16) and the extrusion roller (17), a second adjustment part (21) for adjusting the gap between the forming roller (16) and the peeling guide roller (18), and a third adjustment part (22) for adjusting the gap between the shaping roller (19) and the peeling guide roller (18).

3. The petal-shaped hook and loop fastener forming device according to claim 2, characterized in that, The first adjustment section (20), the second adjustment section (21) and the third adjustment section (22) are all composed of a lead screw (14) and a nut (15). The nut (15) is sleeved on the lead screw (14). Each nut (15) is fixedly connected to the extrusion roller (17), the peeling guide roller (18) and the shaping roller (19) respectively. By rotating the lead screw (14), the nut (15) moves along the axial direction of the lead screw (14).

4. The petal-shaped hook and loop fastener forming device according to claim 3, characterized in that, The molding device also includes a lifting mechanism and a traveling mechanism; the lifting mechanism is used to adjust the height of the frame (23), and the traveling mechanism is used to drive the frame (23) to move.

5. The petal-shaped hook and loop fastener forming device according to claim 4, characterized in that, The lifting mechanism is a chain-type lifting platform, which consists of a lifting platform (26), a drive motor (24) and a lifting chain (25). The drive motor (24) is mounted on the frame (23), and the lifting platform (26) is mounted on the base (41). The lifting screw (42) of the lifting platform (26) is connected to the frame (23). The lifting platform (26) is connected to the drive motor (24) through the lifting chain (25). Under the drive of the drive motor (24), the lifting screw (42) of the lifting platform (26) is driven to rise or fall. The walking mechanism includes a walking motor (27), a transmission chain (28), and a walking wheel (29). The walking motor (27) is mounted on the frame (23), and the walking wheel (29) is mounted below the base (41). The walking motor (27) is connected to the walking wheel (29) through the transmission chain (28), and the walking wheel (29) is driven by the walking motor (27) to move horizontally.

6. A petal-shaped hook and loop fastener forming device according to any one of claims 1 or 5, characterized in that, The three adjacent rows of the closest Velcro forming holes (11) are arranged in a staggered triangular pattern.

7. The petal-shaped hook and loop fastener forming device according to claim 6, characterized in that, The spacing between adjacent hook and loop forming holes (11) in the same row is not less than 2 times the root width (c) and not more than 3 times the root width (c); the spacing between adjacent rows of hook and loop forming holes (11) is greater than 1 times the root width (c) and not more than 2 times the root width (c); the root width (c) of each hook and loop forming hole (11) is greater than 2 times the petal width (d).

8. A molding method using a petal-shaped hook and loop fastener molding apparatus as described in claim 7, characterized in that, The raw material is extruded and cast into the gap between the forming roller (16) and the extrusion roller (17) through the extruder (30), the screen changer (31), the neck connector (32), and the die head (33). The servo motor (7) drives the forming roller (16), the extrusion roller (17), the peeling guide roller (18), and the shaping roller (19) to rotate. The extrusion roller (17) squeezes the raw material into the Velcro forming hole (11). Water is passed through the rotary joint (12) to cool the forming roller (16). Then, the material is shaped by the peeling guide roller (18) and the shaping roller (19) to form a petal-shaped Velcro. The temperature is controlled by the mold temperature controller during the process.

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