Underwear fastener tape hot cutting device

Abstract

The application discloses a bra buckle belt hot cutting device and relates to the field of bra accessory processing. The bra buckle belt hot cutting device comprises a workbench, a buckle belt conveying mechanism, a pushing mechanism, a cutting mechanism and a discharging mechanism which are fixed on the workbench in sequence according to a conveying direction; a pushing-open mechanism which is arranged above the bra back buckle belt on the workbench and is used for pushing open the edge of the upper layer of the bra back buckle belt; a rubber band embedding mechanism which comprises a rubber band seat arranged above the bra back buckle belt, a silica gel rubber band which is unwound on the rubber band seat and a rubber band feeding assembly arranged on the opposite side of the pushing-open mechanism on the workbench, and is used for embedding the silica gel rubber band in the bra back buckle belt; and a merging mechanism which is arranged behind the rubber band embedding mechanism on the workbench and is used for conveying the bra back buckle belt and the silica gel rubber band after merging. The application can avoid the fusion of the edge of the connection between the bra buckle belt and the back of the bra and reduce the processing procedure.

Description

Technical Field

[0001] This invention relates to the field of underwear accessory processing, and in particular to a thermal cutting device for underwear straps. Background Technology

[0002] In the processing of lingerie accessories, long strips of bra back straps are typically cut into multiple sections. These cut straps then proceed to the next step: the back of the bra is sewn together by inserting the straps. Hot cutting is usually used when cutting bra straps. Hot cutting means that the cut area is heated and fused together during the cutting process. This promotes the thermal fusion of the two layers of fibers, ensuring a perfect seal at the cut edge and preventing the straps from fraying.

[0003] Existing thermal cutting devices seal both edges of bra straps during cutting. This necessitates cutting one edge of the strap before inserting the back panel, making the process cumbersome and inefficient. Therefore, a thermal cutting device is needed that prevents the edges of the bra strap and back panel from fusing together during cutting. Summary of the Invention

[0004] In order to prevent the edges of the bra strap and the back bra from fusing together when cutting bra straps and to reduce processing steps, this application provides a thermal cutting device for bra straps.

[0005] The technical solution of the thermal cutting device for bra straps provided in this application is as follows:

[0006] A heat-cutting device for bra straps, comprising:

[0007] The workbench is equipped with a buckle conveying mechanism, a pushing mechanism, a cutting mechanism, and an unloading mechanism, which are fixed in sequence according to the conveying direction. The pushing mechanism is used to push the bra back buckle to the cutting mechanism.

[0008] The opening mechanism is located on the workbench above the bra back buckle strap. The opening mechanism is used to open the upper edge of the bra back buckle strap.

[0009] The tape embedding mechanism includes a tape seat disposed above the bra back buckle strap, a silicone tape unwound from the tape seat, and a tape feeding assembly disposed on the worktable on the opposite side of the disassembly mechanism. The tape embedding mechanism is used to embed silicone tape into the bra back buckle strap.

[0010] The merging mechanism, located behind the tape embedding mechanism on the worktable, is used to merge the bra back buckle strap and silicone tape before conveying them.

[0011] By adopting the above technical solution, the strap conveying mechanism transports long strips of bra back straps to the worktable, and then, via the pushing mechanism, to the cutting mechanism. The cutting mechanism thermally cuts the straps into multiple segments, and the unloading mechanism removes the straps from the cutting mechanism to proceed to the next process. The system also includes a separating mechanism, a tape embedding mechanism, and a merging mechanism. The separating mechanism separates the upper edge of the bra back strap, then embeds silicone tape between the straps. The merging mechanism combines the bra back strap and silicone tape, and also drives the silicone tape to be conveyed.

[0012] The silicone tape remains embedded throughout the movement of the bra back clasp straps. One end of the silicone tape is embedded between the straps, preventing the edges of the straps from melting during heat cutting. This keeps the connection between the straps and the back panel open, allowing for direct insertion and sewing, reducing processing steps. During cutting, the embedded end of the silicone tape is severed, while the other end remains intact. As the merging mechanism moves the tape, it continuously falls off.

[0013] Optionally, the opening mechanism includes a mounting plate connected to the worktable, a positioning bolt threaded onto the mounting plate, a positioning plate slidably connected to the mounting plate, the positioning bolt slidably connected to a sliding groove opened in the positioning plate, and a paddle connected to the positioning plate for opening the upper edge of the bra back buckle strap.

[0014] By adopting the above technical solution, the connection between the mounting plate and the workbench ensures the stable setting of the disengaging mechanism. The connection position between the positioning plate and the mounting plate is changed by the sliding of the positioning bolt in the sliding groove, thereby changing the position of the disengaging piece. This ensures that the disengaging piece can disengage the upper edge of the bra back buckle strap to facilitate the embedding of the silicone tape. At the same time, the size of the disengaged edge can be changed according to the length of the silicone tape that needs to be embedded.

[0015] Optionally, the tape feeding assembly includes a frame with vertical and horizontal moving parts. The frame is connected to a vacuum suction cup via a fixed plate. The vacuum suction cup is used to pick up the silicone tape. The length of the silicone tape embedded in the bra back buckle strap is changed by the horizontal moving parts.

[0016] By adopting the above technical solution, the silicone tape is manually inserted into the bra back buckle strap and unwound to the cutting mechanism during unwinding. When the length of the silicone tape embedded in the bra back buckle strap needs to be adjusted, the silicone tape is moved by a vacuum suction cup to change the embedding length.

[0017] Optionally, the merging mechanism includes a tape feeding assembly and a merging feeding assembly located behind the tape feeding assembly. Both the tape feeding assembly and the merging feeding assembly include a pressing cylinder, a top plate, and a feeding wheel. The pressing cylinder is connected to the worktable, and the top plate is located at the output end of the pressing cylinder. The tape feeding assembly also includes a rotary motor located on the top plate for driving the feeding wheel to rotate. The feeding wheel of the tape feeding assembly abuts against the silicone tape, and the feeding wheel of the merging feeding assembly is connected to the top plate and abuts against the upper layer of the bra back buckle strap.

[0018] By adopting the above technical solution, the pressing cylinder drives the top plate to move up and down, so that when the embedding position of the silicone tape needs to be adjusted, the feeding wheel will not affect the adsorption of the silicone tape by the vacuum suction cup. The rotating motor drives the feeding wheel to rotate, which can move the silicone tape, thereby facilitating the movement of the silicone tape at the cutting mechanism. The feeding wheel of the combined feeding component combines the upper and lower layers of the bra back buckle strap and the silicone tape, which facilitates the subsequent cutting.

[0019] Optionally, the pushing mechanism includes a pushing guide rail, a connecting rod, and a pushing arm. The pushing guide rail is set on the worktable, the connecting rod is connected to the pushing guide rail, one end of the pushing arm is connected to the connecting rod, and the end of the pushing arm away from the connecting rod abuts against the bra back buckle strap. The pushing guide rail moves back and forth along the conveying direction of the bra back buckle strap. When the pushing guide rail drives the connecting rod to move forward, the pushing arm drives the bra back buckle strap to move toward the cutting mechanism.

[0020] By adopting the above technical solution, the push guide rail drives the connecting rod to move, which in turn causes the push arm connected to the connecting rod to push the bra back buckle strap toward the cutting mechanism, thereby realizing the conveying of the bra back buckle strap on the worktable and ensuring that the bra back buckle strap can accurately reach the cutting mechanism for subsequent processing.

[0021] Optionally, the pushing mechanism also includes a rotary drive component, which is mounted on the push guide rail. The connecting rod is connected to the rotary drive component, and the rotary drive component can drive the connecting rod to rotate to raise and lower the push arm.

[0022] By adopting the above technical solution, a rotation drive component is set to realize the rotation of the connecting rod, so that when the push guide rail moves forward, the push arm is lowered and drives the bra back buckle to move, and when the push guide rail moves backward, the push arm is raised. At this time, the bra back buckle does not move, thereby realizing the unidirectional feeding of the bra back buckle toward the cutting mechanism.

[0023] Optionally, the cutting mechanism includes a base, a hydraulic cylinder, a cutter, and an ultrasonic generator. The base is set on the worktable, the hydraulic cylinder is connected to the base, the cutter is connected to the telescopic end of the hydraulic cylinder, the worktable is located below the cutting mechanism and has a through hole, and the ultrasonic generator is located in the through hole and below the cutter.

[0024] By adopting the above technical solution, the hydraulic cylinder pushes the cutter downward, and the cutter and ultrasonic generator work together to achieve thermal cutting of the bra back buckle strap, ensuring the cutting quality.

[0025] Optionally, the unloading mechanism includes a base and an unloading trough. An unloading rod is connected to the base via a Y-axis drive component and a Z-axis drive component. The unloading trough is connected to the cutting mechanism. The unloading rod is used to disengage the hot-cut buckle from the cutter and allow it to reach the unloading trough.

[0026] By adopting the above technical solution, the unloading rod can drive the finished buckle to disengage from the cutter and send the buckle into the unloading trough to the next process.

[0027] In summary, this application has the following beneficial effects:

[0028] The strap conveyor mechanism transports long strips of bra back straps to the worktable, where they are then conveyed by the pushing mechanism to the cutting mechanism. The cutting mechanism thermally cuts the straps into multiple segments, which are then removed by the unloading mechanism to proceed to the next process. The system also includes a separating mechanism, a tape embedding mechanism, and a merging mechanism. The separating mechanism separates the upper edge of the bra back strap, embedding silicone tape between the straps. The merging mechanism combines the back strap and silicone tape, and also drives the silicone tape forward.

[0029] The silicone tape remains embedded throughout the movement of the bra back clasp straps. One end of the silicone tape is embedded between the straps, preventing the edges of the straps from melting during heat cutting. This keeps the connection between the straps and the back panel open, allowing for direct insertion and sewing, reducing processing steps. During cutting, the embedded end of the silicone tape is severed, while the other end remains intact. As the merging mechanism moves the tape, it continuously falls off. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0031] Figure 2 This is a schematic diagram of the overall structure from another perspective of an embodiment of this application;

[0032] Figure 3 This is a schematic diagram of the material pushing mechanism and the material separating mechanism of this application;

[0033] Figure 4 This is a schematic diagram of the tape embedding mechanism and the merging mechanism of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Workbench; 2. Fastening conveyor mechanism; 21. Unwinding drum; 22. Conveyor roller; 3. Pushing mechanism; 31. Pushing guide rail; 32. Rotary drive assembly; 33. Connecting rod; 34. Pushing arm; 4. Cutting mechanism; 41. Hydraulic cylinder; 42. Cutter; 43. Ultrasonic generator; 5. Unloading mechanism; 51. Unloading chute; 52. Unloading rod; 6. Splitting mechanism; 61. Mounting plate; 62. Positioning plate; 63. Sliding groove; 64. Positioning bolt; 65. Paddle; 7. Tape embedding mechanism; 71. Tape holder; 72. Frame; 73. Vacuum suction cup; 8. Merging mechanism; 81. Pressing cylinder; 82. Top plate; 83. Rotary motor; 84. Feeding wheel. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0037] This application discloses a thermal cutting device for underwear straps. (Refer to...) Figure 1 A thermal cutting device for bra straps includes a worktable 1. Bra back straps are placed on the worktable 1 for conveying. The worktable 1 is equipped with a strap conveying mechanism 2, a pushing mechanism 3, a cutting mechanism 4, and an unloading mechanism 5, arranged according to the conveying direction of the bra back straps. The strap conveying mechanism 2 is used to unwind and convey the bra back straps onto the worktable 1. The pushing mechanism 3 is used to push the bra back straps toward the cutting mechanism 4. After cutting at the cutting mechanism 4, the straps pass through the unloading mechanism 5 to the next process.

[0038] To prevent heat melting at the connection edge between the bra back clasp and the bra back panel during hot cutting, silicone tape is embedded in the middle of the bra back clasp. To facilitate the embedding of the silicone tape and the adjustment of its length, a separating mechanism 6, a tape embedding mechanism 7, and a merging mechanism 8 are included. The separating mechanism 6 is located on the worktable 1 above the bra back clasp and is used to separate the upper edge of the bra back clasp. The tape embedding mechanism 7 is used to embed the silicone tape into the bra back clasp. The merging mechanism 8 is located on the worktable 1 behind the tape embedding mechanism 7 and merges and conveys the bra back clasp and silicone tape together.

[0039] Reference Figure 1 and Figure 2 The strap conveying mechanism 2 includes a combination of an unwinding drum 21 and multiple drive rollers. The rolled-up bra back strap is placed in the unwinding drum 21, and the other end is unwound to the drive roller. The unwinding and conveying of the bra back strap is realized by the motor driving the drive roller to rotate, so that the bra back strap reaches the worktable 1.

[0040] On workbench 1, the bra back clasp strap is continuously conveyed. To embed the silicone tape, a tape holder 71 is provided above the bra back clasp strap, on which a roll of silicone tape is placed. One end of the silicone tape is manually embedded into the bra back clasp strap and extends to the cutting mechanism 4. During the conveying process of the bra back clasp strap, the silicone tape remains embedded. In this application, during cutting, the tape primarily relies on heat absorption to ensure that the lower edge of the bra back clasp strap does not have sufficient heat to melt and cut the heat fusion of the upper and lower fibers, thus keeping the edge of the strap open. The end of the silicone tape embedded in the bra back clasp strap is cut off during cutting, while the end outside the bra back clasp strap remains uncut, thus keeping the bra back clasp strap connected. As the bra back clasp strap is conveyed, the cut-off end continuously falls off.

[0041] Reference Figure 3 and Figure 4 The opening mechanism 6 includes a mounting plate 61 connected to the worktable 1, which can be fixed to the worktable 1 with bolts. The mounting plate 61 is threadedly connected to a positioning bolt 64, and a positioning plate 62 is slidably connected to the mounting plate 61. The positioning bolt 64 is slidably connected to a sliding groove 63 formed in the positioning plate 62, and a pry bar 65 is connected to the positioning plate 62. By adjusting the position of the positioning bolt 64 within the sliding groove 63, the positions of the positioning plate 62 and the pry bar 65 can be adjusted to better accommodate bra back straps of different widths. The pry bar 65 can be a thin metal sheet or a thin plastic sheet, used to open the upper edge of the bra back strap for easy insertion of silicone tape.

[0042] When it is necessary to change the length of the silicone tape embedded in the bra back clasp strap, a tape feeding assembly is required. This assembly is located on one side relative to the disengaging mechanism 6. The tape feeding assembly includes a frame 72, on which vertical and horizontal moving parts are mounted. A vacuum suction cup 73 is connected to the frame 72 via a fixed plate. The vacuum suction cup 73 is used to pick up the silicone tape. The vertical and horizontal moving parts can be cylinders or screw drives. The vertical moving part drives the vacuum suction cup 73 to move up and down to pick up and release the silicone tape, while the horizontal moving part moves the silicone tape horizontally, changing the length of the silicone tape embedded in the bra back clasp strap to achieve accurate embedding.

[0043] To facilitate the conveying of silicone tape and the merging of the bra back clasp with the silicone tape, a merging mechanism 8 is installed behind the tape feeding assembly. The merging mechanism 8 includes a tape feeding assembly and a merging feeding assembly. The tape feeding assembly includes a pressing cylinder 81, a top plate 82, a rotary motor 83, and a feeding wheel 84. The pressing cylinder 81 is connected to the worktable 1, the top plate 82 is located at the output end of the pressing cylinder 81, and the rotary motor 83 is mounted on the top plate 82 and drives the feeding wheel 84 to rotate. The feeding wheel 84 abuts against the silicone tape, thereby driving the conveying of the silicone tape and allowing the silicone tape cut at one end by the cutting mechanism 4 to fall off. The merging feeding assembly does not have a rotary motor 83; the feeding wheel 84 is directly connected to the top plate 82 and abuts against the upper layer of the bra back clasp. The merging feeding assembly merges the two layers of the bra back clasp with the silicone tape together.

[0044] Reference Figure 2 and Figure 3 The pushing mechanism 3 includes a pushing guide rail 31, a rotary drive component, a connecting rod 33, and a pushing arm 34. The pushing guide rail 31 is mounted on the worktable 1, the rotary drive component is mounted on the pushing guide rail 31, the connecting rod 33 is connected to the rotary drive component, one end of the pushing arm 34 is connected to the connecting rod 33, and the end of the pushing arm 34 away from the connecting rod 33 abuts against the bra back strap. The rotary drive component can drive the connecting rod 33 to rotate to raise and lower the pushing arm 34. The pushing guide rail 31 can be a linear guide rail, driven by a servo motor and a lead screw and nut pair to move back and forth along the conveying direction of the bra back strap. The pushing guide rail 31 can also be replaced by a cylinder, with the piston rod of the cylinder extending and retracting to move the connecting rod 33 and the pushing arm 34. The rotary drive component can be a torsion spring or a pawl / ratchet structure, so that when the pushing guide rail 31 moves backward, the rotary drive component can raise the pushing arm 34, preventing the pushing arm from contacting the bra back strap.

[0045] Thus, when the guide rail moves forward, the rotating drive component lowers the push arm 34 so that it abuts against the buckle strap, and the push rail 31 moves forward to push the buckle strap; when the guide rail moves backward, the rotating drive component raises the push arm 34, and the position of the bra back buckle strap remains unchanged, thereby realizing the unidirectional transmission of the bra back buckle strap toward the cutting mechanism 4.

[0046] Reference Figure 3 and Figure 4The cutting mechanism 4 includes a base, a hydraulic cylinder 41, a cutter 42, and an ultrasonic generator 43. The base is mounted on the worktable 1 and provides support. The hydraulic cylinder 41 is connected to the base, and the cutter 42 is connected to the extension end of the hydraulic cylinder 41. The worktable 1 is located below the cutting mechanism 4 and has a through hole. The ultrasonic generator 43 is located inside the through hole and below the cutter 42. The hydraulic cylinder 41 pushes the cutter 42 downward, while the ultrasonic generator 43 generates high-frequency vibrations, enabling the cutter 42 to perform thermal cutting on the bra back strap more efficiently, improving the cutting quality and efficiency.

[0047] After thermal cutting, the edges of the bra strap may fuse together and adhere to the cutter 42. Therefore, an unloading mechanism 5 is provided to detach the strap from the cutter 42. The unloading mechanism 5 includes a base and an unloading groove 51. An unloading rod 52 is connected to the base via Y-axis and Z-axis drive components. The unloading groove 51 is inclined and connected to the cutting mechanism 4. The Y-axis and Z-axis drive components can be a lead screw transmission mechanism consisting of a motor, a lead screw, and a slider. The motor drives the lead screw to rotate, and the slider moves linearly on the lead screw, thereby realizing the movement of the unloading rod 52 in the Y and Z axes. The unloading rod 52 moves towards the cut strap along the Z-axis and moves along the Y-axis to drive the strap into the unloading groove 51.

[0048] The implementation principle of the thermal cutting device for bra straps in this application embodiment is as follows: by rationally arranging the various mechanisms on the workbench 1, the fully automated processing of bra straps from conveying and pushing, opening the upper edge, embedding silicone tape, merging and conveying to thermal cutting and unloading is realized, and the edges of the straps will not fuse after thermal cutting, presenting an open state.

[0049] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this specific embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A thermal cutting device for underwear straps, characterized in that, include: Workbench (1), on which a buckle conveyor (2), a pushing mechanism (3), a cutting mechanism (4) and an unloading mechanism (5) are fixed in sequence according to the conveying direction. The pushing mechanism (3) is used to push the bra back buckle to the cutting mechanism (4). The opening mechanism (6) is located on the workbench (1) above the bra back buckle strap. The opening mechanism (6) is used to open the upper edge of the bra back buckle strap. The tape embedding mechanism (7) includes a tape seat (71) disposed above the bra back buckle strap, a silicone tape unwound from the tape seat (71), and a tape feeding assembly disposed on the worktable (1) on the opposite side of the disassembly mechanism (6). The tape embedding mechanism (7) is used to embed the silicone tape into the bra back buckle strap. The merging mechanism (8) is located behind the tape embedding mechanism (7) on the workbench (1) and is used to merge the bra back buckle strap and the silicone tape for conveying.

2. The thermal cutting device for underwear straps according to claim 1, characterized in that: The opening mechanism (6) includes a mounting plate (61) connected to the workbench (1), a positioning bolt (64) threadedly connected to the mounting plate (61), a positioning plate (62) slidably connected to the mounting plate (61), the positioning bolt (64) slidably connected to a sliding groove (63) opened in the positioning plate (62), and a pry bar (65) connected to the positioning plate (62), the pry bar (65) being used to open the edge of the upper layer of the bra back buckle strap.

3. The thermal cutting device for underwear straps according to claim 1, characterized in that: The tape feeding assembly includes a frame (72), on which a vertical moving part and a horizontal moving part are provided. The frame (72) is connected to a vacuum suction cup (73) through a fixed plate. The vacuum suction cup (73) is used to pick up silicone tape. The length of the silicone tape embedded in the bra back buckle strap is changed by the horizontal moving part.

4. The thermal cutting device for underwear straps according to claim 1, characterized in that: The merging mechanism (8) includes a tape feeding assembly and a merging feeding assembly located behind the tape feeding assembly. Both the tape feeding assembly and the merging feeding assembly include a pressing cylinder (81), a top plate (82), and a feeding wheel (84). The pressing cylinder (81) is connected to the worktable (1), and the top plate (82) is located at the output end of the pressing cylinder (81). The tape feeding assembly also includes a rotary motor (83) located on the top plate (82) for driving the feeding wheel (84) to rotate. The feeding wheel (84) of the tape feeding assembly abuts against the silicone tape, and the feeding wheel (84) of the merging feeding assembly is connected to the top plate (82) and abuts against the upper layer of the bra back buckle strap.

5. The thermal cutting device for underwear straps according to claim 1, characterized in that: The pushing mechanism (3) includes a pushing guide rail (31), a connecting rod (33) and a pushing arm (34). The pushing guide rail (31) is set on the worktable (1). The connecting rod (33) is connected to the pushing guide rail (31). One end of the pushing arm (34) is connected to the connecting rod (33). The end of the pushing arm (34) away from the connecting rod (33) abuts against the bra back buckle strap. The pushing guide rail moves back and forth along the conveying direction of the bra back buckle strap. When the pushing guide rail (31) drives the connecting rod (33) to move forward, the pushing arm (34) drives the bra back buckle strap to move toward the cutting mechanism (4).

6. The thermal cutting device for underwear straps according to claim 5, characterized in that: The pushing mechanism (3) also includes a rotation drive component, which is mounted on the push guide rail (31). The connecting rod (33) is connected to the rotation drive component, and the rotation drive component can drive the connecting rod (33) to rotate to lift and lower the push arm (34).

7. The thermal cutting device for underwear straps according to claim 1, characterized in that: The cutting mechanism (4) includes a base, a hydraulic cylinder (41), a cutter (42), and an ultrasonic generator (43). The base is set on the workbench (1), the hydraulic cylinder (41) is connected to the base, and the cutter (42) is connected to the extension end of the hydraulic cylinder (41). The workbench (1) is located below the cutting mechanism (4) and has a through hole. The ultrasonic generator (43) is located inside the through hole and below the cutter (42).

8. The thermal cutting device for underwear straps according to claim 7, characterized in that: The unloading mechanism (5) includes a base and an unloading trough (51). The base is connected to an unloading rod (52) via a Y-axis drive component and a Z-axis drive component. The unloading trough (51) is connected to the cutting mechanism (4). The unloading rod (52) is used to release the hot-cut buckle from the cutter (42) and onto the unloading trough (51).

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