Tensioning and threading device for tobacco leaf bales

Abstract

The utility model relates to a kind of tensioning rope threading device for tobacco leaf sewing bag, including the loading frame of being set to the one side of compression conveyor and the rope threading tightening mechanism above loading frame, the rope threading tightening mechanism includes the electric push rod being set to the top of loading frame, the bottom of the electric push rod is provided with tensioning assembly, the tensioning assembly includes the support frame being set to the top of loading frame, the electric push rod is fixedly installed in the top of support frame, the output end of the electric push rod is penetrated through support frame and is fixedly connected with movable plate, the bottom of the movable plate both sides is fixedly installed with multiple electric slide rails, multiple electric slide rails both sides are mutually aligned, and the sliding seat of mutually aligned electric slide rail is also fixedly installed with double-claw electric clamp jaw.

Description

Technical Field

[0001] This utility model relates to the field of post-cured tobacco leaf storage technology, and in particular to a tensioning rope threading device for sewing tobacco leaf bales. Background Technology

[0002] After the tobacco leaves are bagged and bundled, the tobacco purchasing station needs to seal the bag openings tightly to ensure the airtightness and stability of the tobacco leaves during transportation and storage. A typical process is as follows: A burlap sack is placed over the discharge port. The tobacco leaves are fed into the sack. Then, the ends of a pre-arranged rope inside a rectangular frame around the sack opening are pulled out of the frame. The operator manually passes the rope through each side of the frame to form a loop, then tightens the rope by hand and ties a knot to secure it. Finally, the sew is completed.

[0003] However, at present, the process of binding the bale opening with rope still mainly relies on manual labor, which has problems such as uneven tension control and low operating efficiency. Due to differences in the force, rhythm and knotting method of different operators, the rope tension often varies, affecting the sealing and neatness of the bale opening, and even causing tobacco leaves to leak out due to loosening. Utility Model Content

[0004] Based on this, it is necessary to address the current issue that the rope threading process for sealing the sack still relies mainly on manual labor, resulting in uneven tension control and low operational efficiency. The proposed device includes: a compression conveyor with a loading frame on one side; and a rope threading and tightening mechanism for quickly tightening the outer rope of the sack, also located on one side of the loading frame. The rope threading and tightening mechanism includes an electric push rod at the top of the loading frame, a tensioning component at the bottom of the electric push rod, and a support frame at the top of the loading frame. The electric push rod is fixedly mounted on the top of the support frame, and its output end passes through the support frame and is fixedly connected to a movable plate. Multiple electric slide rails are fixedly mounted on both sides of the bottom of the movable plate, aligning with each other, and each aligned electric slide rail has a double-claw electric gripper fixedly mounted at its output end.

[0005] Preferably, the electric grippers on the two electric slide rails in the same row are arranged opposite each other and are located on both sides of the loading frame in the initial state.

[0006] Preferably, a double-jaw chuck is provided between the two relatively aligned electric slide rails, and contact claws are fixedly installed on both output ends of the double-jaw chuck.

[0007] Preferably, both contact claws are configured as semi-circular shapes, and multiple friction grooves are formed on the adjacent side of both contact claws.

[0008] Preferably, a rotary motor is provided on the top of the double-jaw chuck, the rotary motor is fixedly connected to the support frame, and the output end of the rotary motor is fixedly connected to the top of the double-jaw chuck.

[0009] Preferably, a loading assembly is provided on the outside of the loading frame, including a fixing frame disposed on the outside of the loading frame, a drive motor is fixedly installed on one side of the fixing frame, and the output end of the drive motor is fixedly connected to the loading frame.

[0010] Preferably, the top two sides of the loading frame are provided with multiple rope release ports, and one side of each rope release port is provided with a placement groove. The multiple placement grooves are located on the inner wall of the loading frame, and the multiple rope release ports on both sides are respectively aligned with multiple electric grippers. Beneficial effects

[0011] 1. The tobacco leaves are compacted and pushed to one side of the loading frame by a compression conveyor. The loading frame is pre-lined with hemp rope, and the loading component drives it to flip and connect with the discharge port, so that the tobacco leaves and burlap sacks are filled simultaneously. After filling, the loading frame is reset, and the electric push rod drives the tensioning component to move down, simultaneously tightening the hemp rope at the mouth of the burlap sack, so as to quickly close the sack and fit it against the outer wall, effectively improving the closing efficiency and tension balance, and avoiding the uneven tightness and inefficiency caused by manual rope threading.

[0012] 2. When the drive motor starts, it can drive the loading frame to rotate around its support axis at a controllable angle, so as to flip the loading frame from a vertical loading state to an inclined or horizontal position. The flipping action can actively align its opening direction to form an interface state that matches the discharge direction, so that the tobacco leaves can slide directly into the burlap bag after being compacted. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the tensioning component structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the loading assembly structure of this utility model.

[0017] Figure label:

[0018] 1. Compressor conveyor; 2. Loading frame; 3. Rope threading and tightening mechanism; 31. Electric push rod; 32. Tensioning assembly; 321. Support frame; 322. Movable plate; 323. Electric slide rail; 324. Electric gripper; 325. Rotary motor; 326. Double-jaw chuck; 327. Contact claw; 33. Loading assembly; 331. Fixing frame; 332. Drive motor; 333. Rope release port; 334. Placement trough. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] The following is combined with Figures 1-3 This invention describes a tensioning and threading rope device for sewing tobacco leaves into bales.

[0021] In one embodiment, a tensioning and threading device for sewing tobacco bags includes: a compression conveyor 1, with a loading frame 2 on one side of the compression conveyor 1; and a threading and tightening mechanism 3, which is used to quickly tighten the hemp rope outside the bag and is located on one side of the loading frame 2. The threading and tightening mechanism 3 includes an electric push rod 31 located at the top of the loading frame 2, a tensioning component 32 located at the bottom of the electric push rod 31, and a loading component 33 located on the outside of the loading frame 2.

[0022] In this embodiment, the tobacco leaves are compacted by the compression conveyor 1 and transported to one side of the loading frame 2. Hemp rope is pre-placed inside the loading frame 2. The loading component 33 rotates the loading frame 2, aligning its open end with the discharge port of the compression conveyor 1, facilitating the entry of the tobacco leaves and burlap sack into the loading frame 2 as a single unit. After filling, the loading component 33 restores the loading frame 2 to a vertical position. Subsequently, the electric push rod 31 is activated, driving the tensioning component 32 to move downwards vertically, simultaneously tightening both ends of the hemp rope that originally surrounded the burlap sack opening. This allows the rope around the burlap sack to quickly close and adhere to the outer wall. This structure significantly improves the efficiency and tension consistency of the burlap sack closing process, avoiding problems such as inconsistent tension and slow operation caused by traditional manual pulling and repeated adjustments of the rope.

[0023] It should be noted that the existing rope threading and tightening methods are mostly manual operations. That is, after the worker puts the burlap bag over the filling outlet, he manually wraps the pre-prepared rope around the burlap bag opening and tightens the rope point by point, tying knots or wrapping to close the opening. The loading component 33 only performs the flipping action when the loading frame 2 is empty or after filling is completed. During the entire flipping process, the tobacco leaves will not be squeezed, disturbed or damaged. The tensioning component 32 moves symmetrically downward from top to bottom, uniformly tightening both ends of the rope. Its structure is independent of the compression and loading path, does not contact the tobacco leaf body, and will not affect the position or filling state of the burlap bag.

[0024] like Figure 1 and Figure 2 As shown, the tensioning assembly 32 includes a support frame 321 disposed on the top of the loading frame 2, an electric push rod 31 fixedly installed on the top of the support frame 321, the output end of the electric push rod 31 passes through the support frame 321 and is fixedly connected to a movable plate 322, multiple electric slide rails 323 are fixedly installed on both sides of the bottom of the movable plate 322, the multiple electric slide rails 323 on both sides are aligned with each other, and electric grippers 324 are fixedly installed on the slide seats of the relatively aligned electric slide rails 323.

[0025] In this embodiment, when the electric push rod 31 drives the movable plate 322 to move multiple electric grippers 324 to both sides of the sack, the corresponding electric slide rail 323 drives the multiple electric grippers 324 on both sides to move closer to each other. At the same time, when the electric grippers 324 approach the rope, they automatically clamp.

[0026] The electric gripper 324 and the electric slide rail 323 are arranged in an L-shape, and multiple electric grippers 324 on both sides are located on both sides of the loading frame 2.

[0027] In this embodiment, the movable plate 322 connected to it can be moved down as a whole. When the movable plate 322 descends to the area on both sides of the burlap sack opening, the multiple electric slide rails 323 installed on both sides of its bottom start to start, driving the electric grippers 324 at the corresponding positions to move towards the center in sync, realizing the automatic clamping action of the hemp rope around the burlap sack opening. Since the electric slide rails 323 are arranged symmetrically on both sides, the multiple electric grippers 324 can form a coordinated movement, so that the electric grippers 324 on both sides can maintain consistent position and balanced tension while symmetrically clamping the hemp rope, effectively avoiding the problem of one side tightening first and the other side lagging behind during the manual rope pulling process;

[0028] It should be noted that the electric gripper 324 includes a miniature push rod and an electromagnetic drive assembly. Its output end is connected to two opposing gripping fingers. These two gripping fingers can open and close along the gripping direction. Upon receiving a control signal, the electric gripper 324's internal gripping drive mechanism activates, pushing the two gripping fingers from their initial open state to close inwards. Upon contact with the hemp rope, they generate a clamping force, automatically and stably gripping the rope. During the gripping process, the gripping surfaces of the fingers feature a design with a rubber pad or anti-slip serrations, effectively enhancing friction against the hemp rope and preventing slippage.

[0029] A double-jaw chuck 326 is provided between the two relatively aligned electric slide rails 323, and contact claws 327 are fixedly installed on both output ends of the double-jaw chuck 326.

[0030] In this embodiment, the contact claw 327 is located in the front-back direction of the electric gripper 324, forming a clamping path orthogonal to it. This cross-shaped distribution can form a centrally symmetrical surrounding force field during the clamping of the hemp rope. After the electric gripper 324 completes the tightening clamping in the left and right directions, the contact claw 327 further clamps the hemp rope from the front-back direction, forming a multi-faceted constraint force field, making it more difficult for the hemp rope to slip longitudinally or loosen by rotation after it is closed.

[0031] Both contact claws 327 are set in a semi-circular shape, and multiple friction grooves are opened on the adjacent side of the two contact claws 327.

[0032] In this embodiment, when the contact claw 327 contacts the hemp rope, the multiple friction grooves opened on the adjacent sides of the contact claw 327 can generate a textured structure that enhances friction when in contact with the hemp rope, effectively improving the coefficient of friction between the claw and the rope.

[0033] A rotary motor 325 is provided on the top of the double-jaw chuck 326. The rotary motor 325 is fixedly connected to the support frame 321, and the output end of the rotary motor 325 is fixedly connected to the top of the double-jaw chuck 326.

[0034] In this embodiment, after the contact claw 327 completes the stable clamping of both ends of the hemp rope, the electric grippers 324 located on the left and right sides automatically release, so that the clamping task is smoothly transferred from the electric grippers 324 to the contact claw 327 driven by the double-jaw chuck 326. Then, the rotary motor 325 located at the top of the double-jaw chuck 326 starts, and its output end drives the body of the double-jaw chuck 326 to rotate around the central axis, thereby realizing a further twisting action on the tail of the hemp rope, forming a tighter and more secure end.

[0035] It should be noted that the double-jaw chuck 326 is an integral rotary drive mechanism, with the central axis of the rotary motor 325 connected. Two sets of inclined bosses are arranged at equal angles on the surface of the chuck, which can drive the two contact claws 327 to approach each other in the radial direction and clamp the rope. In the opposite direction, the two claws can be opened to achieve automatic closing and opening.

[0036] Multiple V-shaped anti-slip grooves are provided on one side of the contact claw 327. The groove walls form an interlocking geometry with the hemp rope. After winding or clamping, this enhances friction and prevents the rope from slipping back. At this time, the ropes at both ends are already intertwined in the V-shaped anti-slip grooves of the contact claw 327 and are in a pre-compression state. They can remain tightly interlocked for a short time without loosening. Therefore, only a slight pull is needed on the already wound rope end and one or two ordinary half knots are tied at the end to complete the final fixation of the rope. No additional complex structure is needed to lock the winding state. Compared with the prior art, where the operator needs to frequently pull the rope and make multiple adjustments each time the end is closed, this application allows the operator to complete the knot with only a very small pull, greatly reducing manual labor consumption and improving the comfort and efficiency of long-term high-intensity work.

[0037] like Figure 1 and Figure 3 As shown, the loading assembly 33 includes a fixing frame 331 disposed on the outside of the loading frame 2. A drive motor 332 is fixedly installed on one side of the fixing frame 331, and the output end of the drive motor 332 is fixedly connected to the loading frame 2.

[0038] In this embodiment, when the drive motor 332 is started, it can drive the loading frame 2 to rotate around its support axis at a controllable angle, so as to flip the loading frame 2 from the vertical loading state to the inclined or horizontal position. The flipping action can actively align its opening direction to form an interface state that matches the discharge direction, so that the tobacco leaves can slide directly into the burlap bag after being compacted.

[0039] Multiple rope release openings 333 are provided on both sides of the top of the loading frame 2. A placement groove 334 is provided on one side of each rope release opening 333. The multiple placement grooves 334 are located on the inner wall of the loading frame 2. The multiple rope release openings 333 on both sides are respectively aligned with multiple electric grippers 324.

[0040] In this embodiment, during the initial setup, the operator places the hemp rope into two opposite rope openings 333 in sequence, and lets one end of the hemp rope hang naturally into the loading frame 2, forming a free hanging state. Since the arrangement of the rope openings 333 corresponds one-to-one with the position of the electric gripper 324, the electric gripper 324 can directly align with the position of the hemp rope to clamp it during the subsequent tensioning process, without the need for additional positioning or adjustment.

[0041] It should be noted that the electric gripper 324 first performs initial clamping and tensioning of the hemp rope, with its clamping position located above the working plane of the contact claw 327. After the initial tensioning is completed, the hemp rope is moved down to below the contact claw 327, and the contact claw 327 then performs orthogonal clamping and winding on it in another plane. Since the two are located on different working planes and their actions are separate, the electric gripper 324 and the contact claw 327 will not interfere with each other during operation.

[0042] Working Principle: During operation, the tobacco leaves are first compacted by the compression conveyor 1 and pushed to one side of the loading frame 2. Once the loading assembly 33 drives the loading frame 2 to rotate until its open end aligns with the conveyor outlet, the tobacco leaves and burlap sacks enter the loading frame 2 as a whole. At this time, the burlap rope is pre-placed in the rope outlets 333 on both sides of the top of the loading frame 2, with the rope ends hanging down in a natural loop. After loading is complete, the loading frame 2 rotates back to a vertical position. Subsequently, the electric push rod 31 is activated, driving the connected movable plate 322 to move the electric slide rails 323 on both sides down to the burlap sack opening. Then, the electric slide rails 323 drive the electric grippers 324 at their output ends to move synchronously towards the center and automatically clamp upon contact with the burlap rope. At this point, the electric grippers 324 initially tighten the burlap rope on both sides, improving the rope's fit. Next, the two contact claws 327 located in the front and rear directions of the gripper are brought closer together under the action of the double-jaw chuck 326, achieving orthogonal clamping of the hemp rope, and the fixing force is enhanced by the friction grooves on the contact surface. After clamping is completed, the electric gripper 324 is released, and the double-jaw chuck 326 is driven by the rotary motor 325 to rotate, realizing the winding and tightening of the end of the hemp rope, forming a balanced and symmetrical firm end.

[0043] It should be noted that the compression conveyor, loading frame, electric slide rail, and double-jaw chuck mentioned above are all devices with relatively mature existing technology. The specific model can be selected according to actual needs. At the same time, the power supply of the compression conveyor, loading frame, electric slide rail, and double-jaw chuck can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

Claims

1. A tensioning and threading device for sewing tobacco leaves into bales, comprising a loading frame (2) disposed on one side of a compression conveyor (1), characterized in that, A rope tightening mechanism (3) is provided above the loading frame (2): including an electric push rod (31) set on the top of the loading frame (2), and a tensioning component (32) is provided at the bottom of the electric push rod (31). The tensioning component (32) includes a support frame (321) set on the top of the loading frame (2). The electric push rod (31) is fixedly installed on the top of the support frame (321). The output end of the electric push rod (31) passes through the support frame (321) and is fixedly connected to a movable plate (322). Multiple electric slide rails (323) are fixedly installed on both sides of the bottom of the movable plate (322). The multiple electric slide rails (323) on both sides are aligned with each other, and double-claw electric grippers (324) are fixedly installed on the slide seats of the relatively aligned electric slide rails (323).

2. The tensioning rope threading device for sewing tobacco leaves according to claim 1, characterized in that, The electric grippers (324) on the two electric slide rails in the same row are arranged opposite each other and are located on both sides of the loading frame (2).

3. The tensioning rope threading device for tobacco leaf sewing according to claim 2, characterized in that, A double-jaw chuck (326) is provided between the two relatively aligned electric slide rails (323), and contact claws (327) are fixedly installed on both output ends of the double-jaw chuck (326).

4. The tensioning rope threading device for tobacco leaf sewing according to claim 3, characterized in that, Both of the contact claws (327) are configured as semi-circular shapes, and multiple friction grooves are provided on the adjacent side of both contact claws (327).

5. The tensioning rope threading device for sewing tobacco leaves according to claim 4, characterized in that, A rotary motor (325) is provided on the top of the double-jaw chuck (326). The rotary motor (325) is fixedly connected to the support frame (321), and the output end of the rotary motor (325) is fixedly connected to the top of the double-jaw chuck (326).

6. The tensioning rope threading device for sewing tobacco leaves according to claim 1, characterized in that, The loading frame (2) is provided with a loading assembly (33) on the outside, including a fixing frame (331) on the outside of the loading frame (2). A drive motor (332) is fixedly installed on one side of the fixing frame (331), and the output end of the drive motor (332) is fixedly connected to the loading frame (2).

7. The tensioning rope threading device for tobacco leaf sewing according to claim 2, characterized in that, The top two sides of the loading frame (2) are provided with multiple rope release ports (333), and each of the multiple rope release ports (333) is provided with a placement groove (334) on one side. The multiple placement grooves (334) are located on the inner wall of the loading frame (2), and the multiple rope release ports (333) on both sides are respectively aligned with multiple electric grippers (324).

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