Bag opening tape threading device

Abstract

The invention relates to the technical field of fabric processing, and discloses a bag opening tape threading device. And the belt conveying mechanism is arranged below the cloth passing platform. The pull cylinder is fixedly arranged on one side of the cloth passing platform and used for folding the side edge of the fabric downwards. And the cloth pressing belt is arranged on the cloth passing platform, is arranged on one side of the pull cylinder and is used for pressing and conveying the fabric. And the sewing device is arranged on one side of the cloth passing platform. And the cutting mechanism is arranged at a rear station of the sewing device and is used for picking up the thread belt in the V-shaped notch of the fabric and then cutting off the thread belt. Through the cooperation of the belt feeding mechanism and the pull cylinder, a thread belt is fed into the folded edge of the side edge of the fabric and sewn in the folded edge, the thread belt is picked out and cut through the cutting mechanism, and the belt threading work of the gift bag with the pull rope is achieved; the flatcar sewing machine has an automatic lock cylinder replacing function; the device is high in automation degree, good in practical effect and high in working efficiency.

Description

Technical Field

[0001] This invention relates to the field of fabric processing technology, and in particular to a bag opening strapping device for the production of packaging bags with V-shaped openings. Background Technology

[0002] Gift bags typically have a drawstring at the opening to seal it. The drawstring is threaded through the V-shaped notches on both sides of the opening and wraps around the opening for easy pulling.

[0003] In the production process of this type of gift bag, the sides of the fabric with V-shaped openings need to be sealed using a pull tube, then the drawstring is threaded through the folded edge of the seal, and finally the drawstring is cut. Current production processes use semi-automatic equipment, with a high degree of manual labor involved; therefore, a fully automated machine is needed to solve this problem. Summary of the Invention

[0004] Therefore, it is necessary to provide a bag opening strapping device for producing gift packaging bags, addressing the problems raised in the background technology above.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bag opening strap-threading device, comprising a frame, wherein a fabric feeding platform is provided at the upper end of the frame, and fabric with V-shaped notches equidistantly opened on the side passes through from above, and a tension rod, a fabric feeding drive roller group and a fabric feeding rod are provided at the fabric entry end of the fabric feeding platform.

[0006] A tape feeding mechanism is located below the fabric conveying platform.

[0007] A pull tube is fixedly installed on one side of the fabric feeding platform and is used to fold the side edge of the fabric downwards. The lower end of the pull tube is provided with a guide tube located below the side of the fabric feeding platform and is used to pass through the thread belt led out by the feeding mechanism.

[0008] A pressing belt is installed on the fabric conveying platform and placed on one side of the pull cylinder to press and convey the fabric.

[0009] A sewing device is provided, which is located on one side of the fabric feed platform. The sewing device includes a sewing platform and a flatbed sewing machine. The sewing platform is positioned behind the feed tube, and the thread leading out from the guide tube enters above the sewing platform and into the fold of the fabric. The fold is sealed by the flatbed sewing machine, thus sealing the thread inside the fold.

[0010] The cutting mechanism is located at the rear station of the sewing device and is used to lift and cut the thread in the V-shaped notch of the fabric. The side end of the fabric conveying platform has a cutting opening corresponding to the cutting position of the cutting mechanism.

[0011] The cutting mechanism includes a pneumatic scissors that can be raised and lowered above the cutting opening, a presser plate that can be raised and lowered to press the fabric around the cutting opening, and a thread-lifting mechanism that can be raised and lowered below the cutting opening. The thread-lifting mechanism is used to lift the thread in the fabric gap and then cut it with the pneumatic scissors.

[0012] By adopting the above technical solution, the thread is fed into the folded edge of the fabric side and sewn. The fabric side has a V-shaped notch. The cutting mechanism picks up the thread from the notch and cuts it, thus achieving the threading.

[0013] In a preferred embodiment, the present invention may be further configured such that: the feeding mechanism includes a coil driven to rotate by a motor, and a guide wheel assembly is provided between the coil and the guide tube for introducing the coil into the guide tube.

[0014] By adopting the above technical solution, the belt feeding is stabilized.

[0015] In a preferred embodiment, the present invention can be further configured such that: the pressure belt has two sets arranged in parallel and is driven to rotate by a motor, and the pressure belt does not affect the sewing of the flatbed sewing machine.

[0016] By adopting the above technical solution, the fabric needs to be sewn after being folded by the pull tube, and the belt cannot cover the sewing area.

[0017] In a preferred embodiment, the present invention can be further configured such that: the sewing device further includes a first support, the sewing platform is fixed above the first support by multiple sets of columns, the flatbed sewing machine is placed on the sewing platform, the upper end of the first support is provided with a movable mounting bracket, the upper limit of the mounting bracket is provided with a lock cylinder, the mounting bracket is moved back to a position below the lock cylinder of the flatbed sewing machine by a first cylinder, and the end position of the displacement of the mounting bracket is provided with a pneumatic gripper for replacing the lock cylinder of the flatbed sewing machine.

[0018] By adopting the above technical solution, the lock cylinder can be replaced at any time, and the worker only needs to place the lock cylinder on the mounting bracket.

[0019] In a preferred embodiment, the present invention can be further configured such that: the pneumatic gripper is raised and lowered by a third cylinder and laterally displaced toward the lock core position of the flatbed sewing machine by a second cylinder; the first bracket is provided with a track; and the mounting bracket is slidably mounted on the track.

[0020] By adopting the above technical solution, automatic replacement of the lock cylinder can be achieved.

[0021] In a preferred embodiment, the present invention can be further configured as follows: the pneumatic scissors are driven to rise and fall by a cylinder, the fabric pressing plate is driven to rise and fall by a fourth cylinder, a second bracket is fixed to the bottom of the fabric conveying platform below the cutting opening, a fifth cylinder is fixedly mounted on the second bracket, a lifting frame is provided at the output end of the fifth cylinder, and the lifting frame is driven to rise and fall, and the thread picking mechanism is fixedly mounted on the lifting frame.

[0022] By adopting the above technical solution, it is possible to cut the ribbon and leave a portion of the ribbon exposed on the fabric, which facilitates the formation of a drawstring.

[0023] In a preferred embodiment, the present invention can be further configured such that the bottom surface of the pressing plate has a groove for the free movement of the thread strip within the fabric fold.

[0024] By adopting the above technical solution, the thread will not be compressed during the thread picking process, and the thread can move within the fabric fold.

[0025] In a preferred embodiment, the present invention can be further configured such that the thread-lifting mechanism includes two thread-lifting rods that can be opened outward synchronously by a gripper cylinder, for lifting the thread and opening it to form a shearing section.

[0026] By adopting the above technical solution, the line needs to be flattened after being lifted up to facilitate cutting.

[0027] In summary, the present invention has at least one of the following beneficial technical effects:

[0028] By cooperating with the feeding mechanism and the pull tube, the thread is fed into the folded edge of the fabric and sewn inside. The cutting mechanism then picks out and cuts the thread, thus completing the threading process for the drawstring gift bag.

[0029] The flatbed sewing machine has an automatic lock cylinder changing function;

[0030] This invention has a high degree of automation, good practical effect, and high work efficiency. Attached Figure Description

[0031] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0032] Figure 1 This is a schematic diagram of the structure of the present invention;

[0033] Figure 2 This is a partial structural diagram of the area surrounding the sewing device in this invention;

[0034] Figure 3 This is a schematic diagram of the sewing device in the present invention;

[0035] Figure 4 for Figure 3 A magnified view of part A in the middle;

[0036] Figure 5 This is a schematic diagram of the cutting mechanism in this invention;

[0037] Figure 6 for Figure 5 A schematic diagram of the structure of the center-lifting mechanism.

[0038] In the attached image:

[0039] 1. Frame; 11. Fabric feed platform; 111. Cutting nozzle; 12. Tensioning rod; 13. Fabric feed drive roller assembly; 14. Fabric feed rod; 2. Sewing device; 21. Sewing platform; 22. Flatbed sewing machine; 23. First support; 24. First cylinder; 25. Mounting frame; 26. Track; 27. Pneumatic gripper; 28. Second cylinder; 29. ​​Third cylinder; 3. Pulling cylinder; 31. Thread spool; 32. Guide wheel assembly; 33. Guide tube; 4. Pressing belt; 41. Motor; 5. Cutting mechanism; 51. Pneumatic scissors; 52. Fourth cylinder; 53. Pressing plate; 54. Position sensor; 55. Second support; 56. Fifth cylinder; 57. Lifting frame; 58. Thread take-up mechanism; 581. Gripper cylinder; 582. Thread take-up rod; 6. Lock cylinder. Detailed Implementation

[0040] 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. 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.

[0041] exist Figure 1-6 In the illustrated embodiment, the present invention provides a technical solution: a bag opening strap-threading device, wherein the fabric being processed has V-shaped notches cut on the side in the previous process, and the notches are sealed, including a frame 1, a fabric feeding platform 11 provided at the upper end of the frame 1, and fabric with V-shaped notches cut at equal intervals on the side passes through from above, and a tension rod 12, a fabric feeding drive roller group 13 and a fabric feeding rod 14 are provided at the fabric entry end of the fabric feeding platform 11.

[0042] The tape feeding mechanism is located below the fabric conveying platform 11. The tape feeding mechanism includes a coil 31 that is driven to rotate by a motor. A guide wheel group 32 is provided between the coil 31 and the guide tube 33. The guide wheel group 32 is provided with three rotatable guide wheels. The tape is wound around the guide wheel group 32 to guide the tape into the guide tube 33.

[0043] Pull cylinder 3 is fixedly installed on one side of the fabric feeding platform 11 and is used to fold the side edge of the fabric downward. The lower end of pull cylinder 3 is provided with a guide tube 33 located below the side of the fabric feeding platform 11, which is used to pass through the wire belt led out by the feeding mechanism. The tail end of the guide tube 33 will pass through the fabric feeding platform 11, and the wire belt can enter the upper part of the fabric feeding platform 11.

[0044] Pressing belt 4: Set on the fabric conveying platform 11 and positioned on one side of the pull cylinder 3, it is used to press and convey the fabric. There are two sets of pressing belts 4 arranged in parallel and driven to rotate by motor 41. The pressing belt 4 does not affect the sewing of the flatbed sewing machine 22.

[0045] Sewing device 2: Set on one side of fabric feed platform 11, sewing device 2 includes: first bracket 23, sewing platform 21 and flatbed sewing machine 22. Sewing platform 21 is placed at the rear position of pull tube 3, and the thread tape led out from the guide tube 33 enters above sewing platform 21 and enters the folded edge of fabric. The folded edge is sealed by flatbed sewing machine 22, and the thread tape is sealed inside the folded edge.

[0046] Furthermore, the sewing platform 21 is fixed above the first bracket 23 by multiple sets of columns. The flatbed sewing machine 22 is placed on the sewing platform 21. A movable mounting bracket 25 is provided at the upper end of the first bracket 23. A lock cylinder 6 is placed at the upper limit of the mounting bracket 25. The mounting bracket 25 is moved back to a position below the lock cylinder of the flatbed sewing machine 22 by the first cylinder 24. At the end point of the displacement of the mounting bracket 25, there is a pneumatic gripper 27 for replacing the lock cylinder of the flatbed sewing machine 22. The pneumatic gripper 27 is raised and lowered by the third cylinder 29 and moved laterally to the position of the lock cylinder of the flatbed sewing machine 22 by the second cylinder 28. A track 26 is provided on the first bracket 23, and the mounting bracket 25 is slidably mounted on the track 26.

[0047] Cutting mechanism 5: Located at the rear station of sewing device 2, it is used to lift up and cut the thread in the V-shaped notch of the fabric. The side end of the fabric platform 11 is provided with a cutting opening 111 corresponding to the cutting position of the cutting mechanism 5.

[0048] The cutting mechanism 5 includes: a pneumatic scissors 51 that can be raised and lowered above the cutting opening 111; a liftable pressing plate 53 for pressing the fabric around the cutting opening 111; and a thread take-up mechanism 58 that can be raised and lowered below the cutting opening 111. The bottom surface of the pressing plate 53 has a groove for the thread inside the fabric fold to move freely, which can only press down the fabric and does not affect the movement of the thread inside the fabric fold.

[0049] The pneumatic scissors 51 are driven to rise and fall by a cylinder, and the fabric pressing plate 53 is driven to rise and fall by a fourth cylinder 52. A second bracket 55 is fixed to the bottom of the fabric conveying platform 11 below the cutting opening 111. A fifth cylinder 56 is fixed on the second bracket 55. A lifting frame 57 is provided at the output end of the fifth cylinder 56, and it drives the lifting frame 57 to rise and fall. The thread taking mechanism 58 is fixedly installed on the lifting frame 57. The thread taking mechanism 58 includes two thread taking rods 582 that can be opened outward synchronously by a gripper cylinder 581. They are used to lift up the thread and open it to form a cutting part. After lifting up the thread in the fabric gap, it is cut by the pneumatic scissors 51.

[0050] It should be noted that a position sensor 54 is provided above the fabric feeding platform 11. The position sensor 54 is located at the front end of the cutting position of the cutting mechanism 5 to monitor the notch position on the side of the fabric, so that the fabric notch can be placed inside the cutting opening 111, which facilitates thread picking.

[0051] The specific working principle of the present invention will be explained in detail below: In use, the fabric passes over the fabric guide bar 14, goes around the tension bar 12 and enters the fabric guide drive roller group 13. The fabric is conveyed on the fabric guide platform 11 and is pressed and conveyed backward by the rotating pressure belt 4 on the side.

[0052] The thread wrapped around the pull tube 3 enters the guide tube 33 after passing through the guide wheel assembly 32. The pull tube 3 bends the side of the fabric with a V-shaped notch downwards. After the thread comes out of the guide tube 33, it enters from the bend of the fabric and is sewn into the folded edge of the fabric by the flat sewing machine 22.

[0053] When the fabric gap is detected by the position sensor 54, the gap stops at the cutting opening 111. The fourth cylinder 52 drives the pressure plate 53 to press the fabric tightly, and the fifth cylinder 56 drives the lifting frame 57 to move upward. At this time, the two take-up rods 582 are in a combined state. Through the fifth cylinder 56, the take-up rods 582 rise and pick up the thread of the fabric gap. Through the gripper cylinder 581, the take-up rods 582 are opened. The picked-up thread is straight. The cylinder drives the pneumatic scissors 51 to descend and cut the thread. The cutting mechanism 5 resets, and the fabric continues to be fed to the next process for cutting.

[0054] In another embodiment, every two fabric gaps are sensed by position sensor 54, and the pick-up strap of cutting mechanism 5 will skip one gap, suitable for gift bags with one side folded.

[0055] When the flatbed sewing machine 22 needs to replace the lock cylinder 6, the mounting frame 25 moves to the bottom of the lock cylinder via the first cylinder 24, the second cylinder 28 drives the pneumatic gripper 27 to move laterally, and the third cylinder 29 drives the pneumatic gripper 27 to rise and fall. The pneumatic gripper 27 clamps and removes the original lock cylinder 6 and places it on the mounting frame 25. The first cylinder 24 drives the lock cylinder 6 to be sent out. After manual replacement, the new lock cylinder 6 is moved to the mounting position, clamped by the pneumatic gripper 27, and installed.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bag opening strap-threading device, comprising a frame (1), wherein a fabric feeding platform (11) is provided at the upper end of the frame (1), and fabric with V-shaped notches evenly spaced on the sides passes through from above, wherein a tension rod (12), a fabric feeding drive roller group (13), and a fabric feeding rod (14) are provided at the fabric entry end of the fabric feeding platform (11), characterized in that: A belt feeding mechanism is located below the fabric conveying platform (11); Pull cylinder (3), the pull cylinder (3) is fixedly set on one side of the fabric feeding platform (11) for folding the side edge of the fabric downwards. The lower end of the pull cylinder (3) is provided with a guide tube (33) set below the side edge of the fabric feeding platform (11) for passing through the wire belt led out by the feeding mechanism. Pressing belt (4), the pressing belt (4) is set on the fabric conveying platform (11) and placed on one side of the pull cylinder (3) for pressing and conveying the fabric; Sewing device (2), the sewing device (2) is set on one side of the fabric feeding platform (11), the sewing device (2) includes a sewing platform (21) and a flatbed sewing machine (22), the sewing platform (21) is placed at the rear position of the pull tube (3), and the thread tape led out from the guide tube (33) enters above the sewing platform (21) and enters the folded edge of the fabric. The folded edge is sealed by the flatbed sewing machine (22) and the thread tape is sealed inside the folded edge; The cutting mechanism (5) is set at the rear station of the sewing device (2) and is used to lift up and cut the thread in the V-shaped notch of the fabric. The side end of the fabric platform (11) is provided with a cutting opening (111) corresponding to the cutting position of the cutting mechanism (5). The cutting mechanism (5) includes a pneumatic scissors (51) that can be raised and lowered above the cutting opening (111), a presser plate (53) that can be raised and lowered to press the fabric around the cutting opening (111), and a thread take-up mechanism (58) that can be raised and lowered below the cutting opening (111). The thread take-up mechanism (58) is used to pick up the thread in the fabric gap and then cut it with the pneumatic scissors (51).

2. The bag opening strap-threading device according to claim 1, characterized in that: The feeding mechanism includes a spool (31) that is driven to rotate by a motor. A guide wheel assembly (32) is provided between the spool (31) and the guide tube (33) for introducing the spool into the guide tube (33).

3. The bag opening strap-threading device according to claim 1, characterized in that: The pressing belt (4) has two sets arranged in parallel and is driven to rotate by a motor (41). The pressing belt (4) does not affect the sewing of the flatbed sewing machine (22).

4. The bag opening strap-threading device according to claim 1, characterized in that: The sewing device (2) also includes a first bracket (23). The sewing platform (21) is fixed above the first bracket (23) by multiple sets of columns. The flatbed sewing machine (22) is placed on the sewing platform (21). The upper end of the first bracket (23) is provided with a movable mounting bracket (25). The upper limit of the mounting bracket (25) is provided with a lock cylinder (6). The mounting bracket (25) is moved back to the position below the lock cylinder of the flatbed sewing machine (22) by the first cylinder (24). The end position of the displacement of the mounting bracket (25) is provided with a pneumatic gripper (27) for replacing the lock cylinder of the flatbed sewing machine (22).

5. The bag opening strap-threading device according to claim 4, characterized in that: The pneumatic gripper (27) is raised and lowered by the third cylinder (29) and laterally displaced towards the lock core position of the flatbed sewing machine (22) by the second cylinder (28). The first bracket (23) is provided with a track (26), and the mounting bracket (25) is slidably mounted on the track (26).

6. The bag opening strap-threading device according to claim 1, characterized in that: The pneumatic scissors (51) are driven to rise and fall by a cylinder, and the fabric pressing plate (53) is driven to rise and fall by a fourth cylinder (52). A second bracket (55) is fixed to the bottom of the fabric conveying platform (11) below the cutting opening (111). A fifth cylinder (56) is fixed on the second bracket (55). A lifting frame (57) is provided at the output end of the fifth cylinder (56), and it drives the lifting frame (57) to rise and fall. The thread picking mechanism (58) is fixedly installed on the lifting frame (57).

7. The bag opening strap-threading device according to claim 6, characterized in that: The bottom surface of the pressing plate (53) has a groove for the free movement of the thread inside the fabric fold.

8. The bag opening strap-threading device according to claim 6, characterized in that: The thread-lifting mechanism (58) includes two thread-lifting rods (582) that can be opened outward synchronously by a gripper cylinder (581), which are used to lift up the thread and open it to form a shearing section.

Images