Automatic rope threading device for tying bag pull rope

Abstract

The utility model discloses an automatic rope threading device for a tying bag pull rope. The automatic rope threading device comprises a rack and a transverse moving plate arranged on the rack in a sliding mode. The drawing rope supply mechanism is arranged on one side of the rack, the drawing rope supply mechanism comprises a lead mechanism, a hot melting head and a drawing rope guide mechanism, and the drawing rope roll penetrates through the hot melting head through the drawing rope guide mechanism; the movable clamping jaw is movably arranged on the rack and comprises a cloth piece clamping mechanism and a drawing rope clamping jaw; the drawing rope is clamped through the drawing rope clamping jaw, the transverse moving plate keeps moving so that the drawing rope can be distributed along the abutting rod, and the cloth piece is placed on the drawing rope by moving the clamping jaw. According to the automatic stringing device for the drawstring of the binding pocket, an operator only needs to fold a cloth piece and then directly sews the two sides of the cloth piece so that the cloth piece can be connected with the drawstring, the subsequent stringing step is omitted, meanwhile, the drawstring is driven to move through a transverse moving plate and an abutting rod, and therefore the automatic stringing device for the drawstring of the binding pocket is convenient to use. And the length of the drawing rope can be ensured to be consistent, and the quality of the produced binding bag can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drawstring bag production equipment, in particular to an automatic drawstring threading device for drawstring bags. Background Art

[0002] A drawstring bag, also called a drawstring sack, a lockstring bag or a corded bag, has a cord at its mouth, which can facilitate tying the bag tightly during use to prevent the contents in the bag from falling out. The size of the drawstring bag can be flexibly set according to the specifications of the packaged products. Therefore, the application and popularity of drawstring bags are greatly enriched. Currently, drawstring bags have been widely used in various occasions such as gifts, jewelry, mobile phones, etc. When producing drawstring bags, it is necessary to connect the drawstring with the cloth bag.

[0003] According to the utility model patent application with the patent number: CN210336170U and the publication date of April 17, 2020, a bag-making device for an environmentally friendly cotton drawstring bag is disclosed, which specifically relates to the technical field of bag-making equipment. It includes a support plate. A fixing rod is fixedly arranged at the middle position of the top surface of the support plate, and an installation frame is arranged on one side of the top surface of the support plate close to the fixing rod. A rotating shaft is installed inside the installation frame, and a shaping rod is arranged at the bottom of the installation frame close to the rotating shaft. A fixing plate is arranged on the other side of the top surface of the support plate close to the fixing rod. By setting a driving mechanism in the utility model, the cloth drawstring bag is passed through the rotating shaft, and the shaping rod will shape the cloth drawstring bag, which is convenient for cutting the cloth drawstring bag, speeds up the bag-making process of the cloth drawstring bag, and improves the bag-making efficiency of the cloth drawstring bag. A lead screw, a socket and an installation plate are set, which can realize the quick installation of the cutting knife and is convenient for replacing the cutting knife.

[0004] In the prior art, when making a drawstring bag by manual sewing, after the drawstring bag is completed, the drawstring is manually threaded into the sewn bag body. When sewing, a gap needs to be reserved at the top of the bag body for subsequent threading. However, when threading the drawstring into the sewn bag body, since the drawstring is relatively soft, it is difficult for manual labor to thread the drawstring into the bag body after sewing. Therefore, an automatic drawstring threading device for drawstring bags is proposed, aiming to solve the problem that it is difficult to thread the drawstring into the bag body in the prior art. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an automatic drawstring threading device for drawstring bags, aiming to solve the problem that it is difficult to thread the drawstring into the bag body in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An automatic drawstring threading device for drawstring bags, including a frame, and further including:

[0008] A transverse moving plate slidably arranged on the frame, and an abutting rod is movably arranged on the transverse moving plate;

[0009] A drawstring supply mechanism arranged on one side of the frame, the drawstring supply mechanism includes a lead wire mechanism, a hot melt head and a drawstring guiding mechanism. A drawstring roll is arranged inside the lead wire mechanism, and the drawstring roll passes through the hot melt head through the drawstring guiding mechanism;

[0010] A moving gripper movably arranged on the frame, the moving gripper includes a cloth piece clamping mechanism and a drawstring gripper;

[0011] Clamp the drawstring through the drawstring gripper, keep moving through the transverse moving plate so that the drawstring is distributed along the abutting rod, and place the cloth piece on the drawstring through the moving gripper.

[0012] Preferably, lifting units are arranged at both ends of the transverse moving plate, a mounting plate is fixedly installed on the lifting units, and the abutting rods are symmetrically installed on the outer wall of one side of the mounting plate.

[0013] Preferably, drawstring fixing mechanisms are arranged at both ends of the mounting plate. The drawstring fixing mechanism includes a driving cylinder, a rotating claw and a connecting rod. The driving cylinder is fixedly installed on the outer wall of one side of the mounting plate. A through groove is opened on the outer wall of one side of the transverse moving plate. One end of the rotating claw is rotatably connected to the output end of the driving cylinder. One end of the connecting rod is rotatably connected to the rotating claw, and the other end of the connecting rod is rotatably connected to the outer wall of the driving cylinder.

[0014] Preferably, the lead wire mechanism includes a mounting seat, a movable cylinder and a wire clamping block. The mounting seat is fixedly installed on the frame. A lead wire groove is opened on the outer wall of the top of the mounting seat. The wire clamping block is fixedly installed on the output end of the movable cylinder.

[0015] Preferably, the drawstring guiding mechanism includes a transverse moving cylinder, a connecting seat and a drawstring guiding plate. The connecting seat is slidably connected to the frame. The hot melt head is fixedly installed on the outer wall of one side of the connecting seat. The transverse moving cylinder is fixedly installed on the frame. The output end of the transverse moving cylinder is connected to the connecting seat. The drawstring guiding plate is fixedly installed on the outer wall of one side of the connecting seat.

[0016] Preferably, the cloth piece clamping mechanism includes a telescopic cylinder, a connecting plate, a clamping cylinder and a clamping plate. The connecting plate is fixedly installed on the output end of the telescopic cylinder. The clamping cylinder and the clamping plate are both fixedly connected to the connecting plate. The output end of the clamping cylinder extends to abut against the clamping plate.

[0017] In the above technical solution, an automatic drawstring threading device for a drawstring bag provided by the present utility model has the following beneficial effects:

[0018] In this utility model, the drawstring gripper of the movable gripper can grasp the drawstring conveyed by the drawstring supply mechanism through the lead wire mechanism and the drawstring guiding mechanism. By moving the movable gripper and cooperating with the movement of the transverse moving plate, the drawstring is distributed along the abutting rod. Then, the fabric piece is placed on the drawstring by the fabric piece clamping mechanism to facilitate subsequent production. This enables the operator to only fold the fabric piece and then directly sew the two sides of the fabric piece to complete the connection between the fabric piece and the drawstring, eliminating the subsequent step of threading the drawstring. At the same time, by driving the drawstring to move through the transverse moving plate and the abutting rod, the length of the drawstring can be ensured to be consistent, and the quality of the produced drawstring bag can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Schematic three-dimensional structure diagram provided by an embodiment of the present utility model;

[0021] Figure 2 Schematic structure diagram of the transverse moving plate provided by an embodiment of the present utility model;

[0022] Figure 3 Schematic structure diagram of the connection relationship of the lifting unit provided by an embodiment of the present utility model;

[0023] Figure 4 Schematic structure diagram of the drawstring guiding mechanism provided by an embodiment of the present utility model;

[0024] Figure 5 Schematic structure diagram of the fabric piece clamping mechanism provided by an embodiment of the present utility model.

[0025] Description of the reference numerals in the drawings:

[0026] 1. Frame; 11. Fixed frame; 12. Gripper driving unit; 13. Fixed plate; 14. Mounting plate; 2. Transverse moving plate; 21. Abutting rod; 3. Drawstring supply mechanism; 31. Lead wire mechanism; 311. Mounting seat; 312. Moving cylinder; 313. Thread clamping block; 314. Lead wire groove; 32. Hot melt head; 33. Drawstring guiding mechanism; 331. Transverse moving cylinder; 332. Connecting seat; 333. Drawstring guiding plate; 4. Movable gripper; 41. Fabric piece clamping mechanism; 411. Telescopic cylinder; 412. Connecting plate; 413. Clamping cylinder; 414. Clamping plate; 42. Drawstring gripper; 5. Lifting unit; 51. Mounting plate; 52. Drawstring fixing mechanism; 521. Driving cylinder; 522. Rotating claw; 523. Connecting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] Please refer to Figure 1 —5, an automatic string threading device for a drawstring of a drawstring bag, including a frame 1, and further including:

[0029] A cross-moving plate 2 slidably arranged on the frame 1, and an abutting rod 21 is movably arranged on the cross-moving plate 2;

[0030] A drawstring supply mechanism 3 arranged on one side of the frame 1, the drawstring supply mechanism 3 includes a lead wire mechanism 31, a hot melt head 32 and a drawstring guiding mechanism 33. A drawstring roll is arranged inside the lead wire mechanism 31, and the drawstring roll passes through the hot melt head 32 through the drawstring guiding mechanism 33;

[0031] A moving gripper 4 movably arranged on the frame 1, the moving gripper 4 includes a cloth piece clamping mechanism 41 and a drawstring gripper 42;

[0032] The drawstring is clamped by the drawstring gripper 42, and the cross-moving plate 2 is moved to keep the drawstring distributed along the abutting rod 21, and the cloth piece is placed on the drawstring by the moving gripper 4.

[0033] Specifically, as Figure 5 and Figure 1 shown, a slide rail and a driving mechanism are arranged on the frame 1. The cross-moving plate 2 is slidably connected to the frame 1 through the slide rail, and the output end of the driving mechanism is connected to the cross-moving plate 2. Specifically, the driving mechanism can be a conventional mechanical component such as a cylinder or a linear driver, and the cross-moving plate 2 is driven by the driving mechanism to reciprocate on the frame 1;

[0034] As Figure 1 and Figure 2 shown, through holes are opened at the four corners of the outer wall on one side of the cross-moving plate 2, and the abutting rod 21 is movably arranged in the through holes, and the abutting rod 21 can slide through the through holes;

[0035] A drawstring supply mechanism 3 is arranged at one end of the frame 1. The drawstring supply mechanism 3 includes a lead wire mechanism 31, a hot melt head 32 and a drawstring guiding mechanism 33. A drawstring roll is arranged inside the lead wire mechanism 31, and the drawstring roll passes through the hot melt head 32 through the drawstring guiding mechanism 33. Through the drawstring guiding mechanism 33, the drawstring can pass through the hot melt head 32, so that the hot melt head 32 can fuse the drawstring and the moving gripper 4 can grab the drawstring.

[0036] Further, a movable jaw 4 is movably arranged on the rack 1, a fixed frame 11 is arranged on the rack 1, and a jaw driving unit 12 is arranged on the fixed frame 11. Specifically, the jaw driving unit 12 is specifically a cylinder or a linear driver. A fixing plate 13 is fixedly arranged at the output end of the jaw driving unit 12. The movable jaw 4 includes a drawstring jaw 42 and a fabric sheet clamping mechanism 41. Both the drawstring jaw 42 and the fabric sheet clamping mechanism 41 are connected to the fixing plate 13. The fabric sheet is clamped by the fabric sheet clamping mechanism 41, and the drawstring can be clamped by the drawstring jaw 42.

[0037] In this utility model, the drawstring jaw 42 of the movable jaw 4 can grasp the drawstring conveyed by the drawstring supply mechanism 3 through the lead mechanism 31 and the drawstring guiding mechanism 33. By the movement of the movable jaw 4 and in cooperation with the movement of the transverse moving plate 2, the drawstring is distributed along the abutting rod 21. Then, the fabric sheet is placed on the drawstring by the fabric sheet clamping mechanism 41 to facilitate subsequent production. This enables the operator to only fold the fabric sheet and then directly sew the two sides of the fabric sheet to complete the connection between the fabric sheet and the drawstring, eliminating the subsequent step of threading the drawstring. At the same time, by driving the drawstring to move through the transverse moving plate 2 and the abutting rod 21, the lengths of the drawstrings can be ensured to be consistent, and the quality of the produced drawstring bags can be improved.

[0038] As a further embodiment provided by this utility model, as Figure 3 shown, lifting units 5 are fixedly installed on both sides of the transverse moving plate 2. The lifting units 5 are specifically cylinders. The output ends of the lifting units 5 are fixedly installed with mounting plates 51. Two of the abutting rods 21 are symmetrically installed on the outer wall of one side of the mounting plate 51, and one side of the abutting rod 21 can be driven to move synchronously by the lifting unit 5.

[0039] As a further embodiment provided by this utility model, drawstring fixing mechanisms 52 are arranged at both ends of the mounting plate 51. The drawstring fixing mechanism 52 includes a driving cylinder 521, a rotating claw 522, and a connecting rod 523. The driving cylinder 521 is fixedly installed on the outer wall of one side of the mounting plate 51. The rotating claw 522 is specifically an "L" - shaped structure. One end of the connecting rod 523 is rotatably connected to the outer wall of one side of the rotating claw 522 through a rotating shaft, and the other end of the connecting rod 523 is rotatably connected to the outer wall of the driving cylinder 521 through a rotating shaft. One end of the "L" - shaped structure of the rotating claw 522 is rotatably connected to the output end of the driving cylinder 521. By the driving cylinder 521, the rotating claw 522 can be driven to rotate around the connecting rod 523, so that the rotating claw 522 rotates from the bottom of the transverse moving plate 2 through the slot to the transverse moving plate 2 to fix the drawstring on the transverse moving plate 2.

[0040] As an embodiment provided by this utility model, as Figure 4 and Figure 5As shown in the figure, the lead wire mechanism 31 includes a mounting base 311, a movable cylinder 312, and a wire clamping block 313. The mounting base 311 is fixedly installed on the frame 1. A lead wire groove 314 is provided on the outer wall of the top of the mounting base 311. A positioning plate 14 is further provided on the outer wall of one side of the frame 1. A wire guiding wheel is provided on the positioning plate 14. The number of positioning plates 14 is three, and the three positioning plates 14 are distributed in a linear array. The number of wire guiding wheels can be customized according to requirements. The wire clamping block 313 is fixedly installed on the output end of the movable cylinder 312. The movable cylinder 312 can drive the wire clamping block 313 to move up and down. A protrusion is provided on the outer wall of one side of the wire clamping block 313. When the movable cylinder 312 drives the wire clamping block 313 to descend, the protrusion on the wire clamping block 313 can be driven to embed into the lead wire groove 314, so that the drawstring can be fixed in the lead wire groove 314.

[0041] Further, as Figure 5 shown, the drawstring guiding mechanism 33 includes a transverse movement cylinder 331, a connecting seat 332, and a drawstring guiding plate 333. The connecting seat 332 is slidably connected to the frame 1 through a slide rail. The hot melt head 32 is fixedly installed on the outer wall of one side of the connecting seat 332. The transverse movement cylinder 331 is fixedly installed on the frame 1. The output end of the transverse movement cylinder 331 is connected to the connecting seat 332. The connecting seat 332 can be driven to slide along the slide rail through the transverse movement cylinder 331. The drawstring guiding plate 333 is fixedly installed on the outer wall of one side of the connecting seat 332. A groove is provided on the outer wall of one side of the drawstring guiding plate 333, and the drawstring can pass through the groove to facilitate the drawstring gripper 42 to grip the drawstring.

[0042] As a further embodiment provided by the present invention, as Figure 5 shown, the cloth piece clamping mechanism 41 includes a telescopic cylinder 411, a connecting plate 412, a clamping cylinder 413, and a clamping plate 414. The telescopic cylinder 411 is fixedly installed on the outer wall of one side of the fixing plate 13. The connecting plate 412 is fixedly installed at the output end of the telescopic cylinder 411. Preferably, the number of the clamping cylinders 413 and the clamping plates 414 is multiple, and the clamping cylinders 413 and the clamping plates 414 are distributed in a linear array on the outer wall of one side of the connecting plate 412. The output end of the clamping cylinder 413 is kept movable and abuts against the outer wall of the clamping plate 414, so that the cloth piece can be grabbed.

[0043] Working principle:

[0044] The clamping jaw driving unit 12 drives the movable clamping jaw 4 to move to the side of the frame 1 where the drawstring supply mechanism 3 is provided, and the drawstring gripper 42 grabs the end part inside the hot melt head 32. After grabbing, the movable cylinder 312 of the lead wire mechanism 31 drives the wire clamping block 313 to move upward, so that the wire clamping block 313 is separated from the drawstring. The clamping jaw driving unit 12 drives the movable clamping jaw 4 to move to the side of the frame 1 away from the drawstring supply mechanism 3;

[0045] Then, the lifting units 5 on both sides synchronously drive the mounting plate 51 to keep moving, so that the abutment rod 21 installed on the mounting plate 51 extends;

[0046] The driving mechanism drives the transverse plate 2 to keep moving horizontally. Since the end of the drawstring is fixed by the drawstring clamp 42 at the end away from the drawstring supply mechanism 3, during the transverse movement of the plate 2, the abutment rod 21 located outside the transverse plate 2 will abut against the drawstring, so that the two ends of the drawstring can be bent along two of the abutment rods 21. When the transverse plate 2 moves to the specified position;

[0047] The draw rope is melted by the hot melt head 32. At the same time, the active cylinder 312 of the wire guide mechanism 31 drives the clamping block 313 to move downward, fixing the draw rope inside the clamping block 313. The driving cylinder 521 of the draw rope fixing mechanism 52 away from the moving direction of the transverse plate 2 drives the rotating claw 522 to rotate, and the draw rope clamping claw 42 loosens the end of the draw rope, fixing the two ends of the draw rope on the transverse plate 2, and obtaining a single draw rope, and the draw rope is in a "U" shape.

[0048] Then the driving mechanism drives the movable clamping claw 4 to move to one end of the draw rope supply mechanism 3 transverse plate 2 again, and the draw rope guiding mechanism 33 drives the connecting seat 332 to move toward the lead unit, so that the end of the draw rope moves out of the hot melt head 32, so that the draw rope clamping claw 42 can clamp the draw rope;

[0049] After the rope-drawing clamp 42 clamps the rope, the movable cylinder 312 of the wire-leading mechanism 31 drives the clamp block 313 to move upward, so that the clamp block 313 is separated from the rope, and the movable clamp 4 is driven by the clamp driving unit 12 to move to the side of the frame 1 away from the rope-drawing supply mechanism 3;

[0050] Then the transverse plate 2 is reset, and the drawstring is melted by the hot melt head 32. At the same time, the active cylinder 312 of the wire guide mechanism 31 drives the clamping block 313 to move downward, fixing the drawstring inside the clamping block 313. The driving cylinder 521 of the drawstring fixing mechanism 52 away from the moving direction of the transverse plate 2 drives the rotating claw 522 to rotate, and the drawstring clamping claw 42 loosens the end of the drawstring, and fixes the two ends of the drawstring on the transverse plate 2, so as to obtain a single drawstring, and the drawstring is in a "U"-shaped structure. It should be pointed out that the openings of the "U"-shaped structure formed by the two drawstrings are opposite.

[0051] Then, the clamp driving unit 12 drives the movable clamp 4 to move to the side of the frame 1 away from the drawstring supply mechanism 3 to grab the cloth piece and place the cloth piece above the drawstring.

[0052] The drawstring of fixed length can be fused while completing the line-releasing action to ensure that the drawstring lengths of the produced drawstring bags are the same. At the same time, the drawstring fixing mechanism 52 can accurately position the drawstring. In subsequent manual production, the drawstring and the cloth piece only need to be folded and then sewn to connect them, eliminating the operation of inserting the drawstring into the drawstring bag, thereby improving the production efficiency of the drawstring bag.

[0053] Those skilled in the art will appreciate that other similar connection methods may also be used to implement the present invention, such as welding, bonding or screwing.

[0054] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic drawstring threading device for a drawstring bag, comprising a frame (1), characterized in that: Also includes: A transverse moving plate (2) is slidably arranged on the frame (1), and an abutment rod (21) is movably arranged on the transverse moving plate (2); A drawstring supply mechanism (3) is arranged on one side of the frame (1), the drawstring supply mechanism (3) comprising a lead mechanism (31), a hot melt head (32) and a drawstring guide mechanism (33), a drawstring reel is arranged inside the lead mechanism (31), and the drawstring reel passes through the hot melt head (32) via the drawstring guide mechanism (33); A movable clamping claw (4) movably arranged on the frame (1), wherein the movable clamping claw (4) comprises a cloth clamping mechanism (41) and a drawstring clamping claw (42); The drawstring is clamped by the drawstring clamp (42), and the drawstring is kept moving by the transverse plate (2) so that the drawstring is distributed along the abutment rod (21), and the cloth piece is placed on the drawstring by moving the clamp (4).

2. The automatic drawstring threading device for a drawstring bag according to claim 1, characterized in that: Lifting units (5) are provided at both ends of the transverse moving plate (2), a mounting plate (51) is fixedly mounted on the lifting unit (5), and the abutment rod (21) is symmetrically mounted on the outer wall of one side of the mounting plate (51).

3. The automatic drawstring threading device for a drawstring bag according to claim 2, characterized in that: Both ends of the mounting plate (51) are provided with a drawstring fixing mechanism (52), and the drawstring fixing mechanism (52) comprises a driving cylinder (521), a rotating claw (522) and a connecting rod (523). The driving cylinder (521) is fixedly mounted on the outer wall of one side of the mounting plate (51), and a through groove is provided on the outer wall of one side of the transverse plate (2). One end of the rotating claw (522) is rotatably connected to the output end of the driving cylinder (521), one end of the connecting rod (523) is rotatably connected to the rotating claw (522), and the other end of the connecting rod (523) is rotatably connected to the outer wall of the driving cylinder (521).

4. The automatic drawstring threading device for a drawstring bag according to claim 1, characterized in that: The wire guiding mechanism (31) comprises a mounting seat (311), a movable cylinder (312) and a wire clamping block (313); the mounting seat (311) is fixedly mounted on the frame (1); a wire guiding groove (314) is provided on the outer wall at the top of the mounting seat (311); and the wire clamping block (313) is fixedly mounted on the output end of the movable cylinder (312).

5. The automatic drawstring threading device for a drawstring bag according to claim 1, characterized in that: The rope-drawing guide mechanism (33) comprises a transverse cylinder (331), a connecting seat (332) and a rope-drawing guide plate (333); the connecting seat (332) is slidably connected to the frame (1); the hot melt head (32) is fixedly mounted on the outer wall of one side of the connecting seat (332); the transverse cylinder (331) is fixedly mounted on the frame (1); the output end of the transverse cylinder (331) is connected to the connecting seat (332); and the rope-drawing guide plate (333) is fixedly mounted on the outer wall of one side of the connecting seat (332).

6. The automatic drawstring threading device for a drawstring bag according to claim 1, characterized in that: The cloth piece clamping mechanism (41) comprises a telescopic cylinder (411), a connecting plate (412), a clamping cylinder (413) and a clamping plate (414); the connecting plate (412) is fixedly mounted on the output end of the telescopic cylinder (411); the clamping cylinder (413) and the clamping plate (414) are both fixedly connected to the connecting plate (412) and extend through the output end of the clamping cylinder (413) to abut against the clamping plate (414).

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