A shearing mechanism and shearing method for a packing strap recycling roller

Abstract

This invention belongs to the field of packing strap recycling, specifically disclosing a packing strap recycling roller shearing mechanism and shearing method, including a recycling feeding mechanism, a power mechanism, and auxiliary devices. The recycling feeding mechanism includes a pressing cylinder, an upper roller assembly, and a lower roller; the power mechanism includes a motor; and the auxiliary devices include a frame and a synchronous belt. A packing strap recycling shearing method includes first elastically rolling the packing strap to be recycled using an elastically retractable upper roller combined with a lower roller. A conveyor and a packing strap guide are provided behind the guide to spatially limit the conveyed packing strap. The recycling shearing mechanism is positioned behind the packing strap guide, and the packing strap is sheared using upper and lower blades in an up-and-down shearing manner. This invention significantly improves the shearing effect of the recycling shearing mechanism by relying on the pushing action of the elastically set upper roller, significantly reducing problems such as equipment jamming due to incomplete shearing.

Description

Technical Field

[0001] This invention belongs to the field of packaging strap recycling, and specifically discloses a strap recycling roller shearing mechanism and shearing method. Background Technology

[0002] Packing straps are a type of composite material widely used for bundling boxes. They are typically made of materials such as polypropylene (PP), polyester (PET), paper tape, and nylon tape, and are commonly used in logistics, warehousing, manufacturing, electronics, and carton packaging. Since the packaging straps need to be disassembled before use, cutting and recycling them are crucial. In assembly lines, the speed of disassembly affects work efficiency. Some existing packing strap disassembly equipment does not cut the straps into sections, which hinders collection and subsequent recycling.

[0003] To address the issue of strapping recycling, existing recycling technologies have certain shortcomings, including the strapping's tendency to shift, leading to recycling failures. Most existing strapping recycling technologies are designed for single-layer strapping. When dealing with strapping already used on packaging boxes, where the strapping is double or multiple layers, the recycling process can easily cause the equipment to jam. These technical problems primarily stem from the design of the recycling feeding mechanism and its coordination with the recycling shearing mechanism. In-depth research reveals the following causes of these failures: 1. After use, the strapping may become damaged or bent, often causing equipment jamming due to incomplete strapping; 2. Whether the strapping is properly positioned before the cutter begins shearing, or whether it is warped, directly affects the shearing effect. Summary of the Invention

[0004] This invention provides a packing tape recycling roller shearing mechanism and shearing method to solve the packing tape conveying and shearing problems described in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A strapping tape recycling roller shearing mechanism includes a recycling feeding mechanism, a power mechanism, and auxiliary devices. The recycling feeding mechanism includes a clamping cylinder, an upper roller assembly, and a lower roller. The power mechanism includes a motor, and the auxiliary devices include a frame and a synchronous belt. The recycling feeding mechanism is responsible for continuously conveying the strapping tape, the power mechanism is responsible for providing power to the recycling feeding mechanism, and the auxiliary devices are responsible for connecting the motor and the recycling feeding mechanism, transmitting power to the recycling feeding mechanism.

[0007] Optionally, the clamping cylinder of the recycling feeding mechanism is fixedly mounted on the frame, the upper roller assembly of the recycling feeding mechanism is mounted on the lower part of the push rod of the clamping cylinder, the lower roller of the recycling feeding mechanism is fixedly mounted on the frame and driven to rotate by a motor, and the vertical movement of the upper roller assembly is driven by the clamping cylinder.

[0008] Optionally, the upper roller assembly includes an upper roller, an upper roller shaft, a bearing, left and right limiting blocks, and a limiting plate; the upper roller shaft is connected to the upper roller via the bearing; the upper roller shaft can move up and down under the drive of the upper roller; a gap is left between the left and right limiting blocks and the outer circle of the upper roller to prevent the packing strap from passing through, ensuring the smooth operation of the upper roller and preventing the packing strap from being caught in the upper roller; the limiting plate is in a closed state with the frame during the operation of the mechanism to prevent the packing strap from swinging off the roller.

[0009] Optionally, the motor is fixedly mounted on the frame, and the motor drives the lower roller of the recycling feeding mechanism to rotate synchronously through the synchronous belt of the auxiliary device; during recycling feeding, the lower roller drives the upper roller of the recycling feeding mechanism to rotate through friction.

[0010] Optionally, after the strapping enters the equipment, the upper roller assembly of the recycling feeding mechanism presses the strapping downwards with the pressing cylinder of the recycling feeding mechanism, and the motor of the power mechanism drives the lower roller to rotate through the synchronous belt. Under the action of the upper and lower rollers, the strapping is gradually fed out.

[0011] Optionally, a recycling shearing mechanism is also included, which includes a tape-cutting cylinder, a cutter assembly, and a guide seat; the recycling feeding mechanism is responsible for continuously feeding the packing tape to the recycling shearing mechanism, and the recycling shearing mechanism is responsible for segmenting and cutting the packing tape.

[0012] Optionally, the left and right limit blocks form a conveyor channel with the frame, and the recycling shearing mechanism is provided on one side of the conveyor channel.

[0013] Optionally, a guide partition is provided between the conveyor and the recycling shearing mechanism, and a packing strap guide is provided on the guide partition corresponding to the conveyor; the cutter assembly is provided on one side of the packing strap guide; the cutter assembly includes an upper blade and a lower blade; the upper blade is driven to move up and down by a cutting cylinder.

[0014] Optionally, it also includes the guide seat, which is provided with a guide groove for guiding the upper blade.

[0015] Optionally, the limiting piece extends from the left and right limiting blocks to the guide seat to maintain the limiting of the packing strap until the cutting is completed.

[0016] A method for recycling and cutting packing tape, using a packing tape recycling roller cutting mechanism as described above, includes: firstly, using an elastically telescopic upper roller combined with a lower roller to elastically roll the packing tape to be recycled; then, using a conveyor channel and a packing tape guide channel to spatially limit the conveyed packing tape; and finally, setting the recycling cutting mechanism behind the packing tape guide channel, and using an upper blade and a lower blade to cut the packing tape by cutting it up and down.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. In this invention, the upper roller is made retractable, and the length of the spring changes with the thickness of the packing strap. For cases where the thickness of a certain section of packing strap is uneven, this device can perform adaptive conveying and recycling cutting. Even for the joint of double-layer packing straps, recycling and cutting can be performed without jamming.

[0019] 2. The present invention prevents the packing strap from getting caught in the rollers by using left and right limiting blocks and prevents the packing strap from swinging off the rollers by using limiting plates. Under the constraint of the left and right limiting blocks and limiting plates, the packing strap can be smoothly recycled.

[0020] 3. By setting limit plates and left and right limit blocks for limiting, a conveyor and packing guide are formed. The upper roller with flexible setting can push, which can significantly improve the shearing effect of the recycling shearing mechanism and significantly reduce problems such as equipment jamming due to incomplete shearing. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0022] Figure 1 This is a schematic diagram of the overall structure of the recycling and feeding mechanism of the present invention;

[0023] Figure 2 This is a schematic diagram of the synchronous belt structure of the auxiliary device of the present invention;

[0024] Figure 3 This is a schematic diagram of the overall structure of the upper roller assembly of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of spring b of the present invention;

[0026] Figure 5 This is a schematic diagram of the combined structure of the recycling feeding mechanism and the recycling shearing mechanism of the present invention;

[0027] Figure 6 yes Figure 5 Schematic diagram of the structure after the guide partition is installed;

[0028] Figure 7 yes Figure 6 This is a structural diagram with the guide seat installed.

[0029] In the diagram, 1. Clamping cylinder; 2. Upper roller assembly; 3. Lower roller; 4. Motor; 5. Frame; 6. Synchronous belt; 21. Connecting bracket; 221. Spring a; 222. Spring b; 23. Upper roller; 24. Upper roller shaft; 25. Bearing; 26. Left and right limit blocks; 27. Limiting plate; 28. Rear roller bracket; 29. ​​Front roller bracket; 7. Upper blade; 71. Lower blade; 72. Guide seat; 8. Conveyor; 81. Guide partition; 82. Packing strap guide; 9. Cutting cylinder. Detailed Implementation

[0030] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] A strapping tape recycling roller shearing mechanism includes a recycling feeding mechanism, a power mechanism, and auxiliary devices. The recycling feeding mechanism includes a clamping cylinder 1, an upper roller assembly 2, and a lower roller 3. The power mechanism includes a motor 4. The auxiliary devices include a frame 5 and a synchronous belt 6. The recycling feeding mechanism is responsible for continuously conveying the strapping tape, the power mechanism is responsible for providing power to the recycling feeding mechanism, and the auxiliary devices are responsible for connecting the motor 2 and the recycling feeding mechanism, transmitting power to the recycling feeding mechanism.

[0034] Optionally, the clamping cylinder 1 of the recycling feeding mechanism is fixedly mounted on the frame 5, the upper roller assembly 2 of the recycling feeding mechanism is mounted on the lower part of the push rod of the clamping cylinder 1, the lower roller 3 of the recycling feeding mechanism is fixedly mounted on the frame 5 and driven to rotate by the motor 4, and the vertical movement of the upper roller assembly 2 is driven by the clamping cylinder 1.

[0035] Optionally, the upper roller assembly 2 includes at least a connecting bracket 21, spring a 221, spring b 222, upper roller 23, upper roller shaft 24, bearing 25, left and right limiting blocks, limiting plate 27, roller rear support 28, and roller front support 29; the connecting bracket 21 is fixedly connected to the clamping cylinder 1, and the connecting bracket 21 is fixedly connected to the roller front support 29 and roller rear support 28 by fixing bolts; the upper roller shaft 24 is connected to the upper roller 23 by the bearing 25; the upper roller shaft 24 can move up and down in the middle hole of the roller front support 29 and roller rear support 28 under the drive of the upper roller 23; the main body of spring a 221 is located in front of the roller. Inside the bracket 29, the main body of the spring b222 is located inside the rear bracket 28 of the roller. This structure can prevent the spring from slipping and swinging. One end of each of the two springs is connected to the connecting bracket 21, and the other end is connected to the roller shaft 24. The upper roller 23 floats up and down according to the thickness of the packing strap under the action of the spring. The front bracket 29 of the roller is connected to the left and right limiting blocks 26 and the limiting plate 27 by bolts. A gap is left between the left and right limiting blocks 26 and the outer circle of the upper roller 23 so that the packing strap cannot pass through, ensuring the smooth operation of the upper roller and preventing the packing strap from being caught in the upper roller. The limiting plate 27 is in a closed state with the frame 5 during the operation of the mechanism to prevent the packing strap from swinging and falling off the roller.

[0036] The length of the spring changes with the thickness of the strapping, ensuring that the strapping and the heat-fused double-layer joint can pass smoothly through the recycling feeding mechanism and avoid jamming. The upper roller has a grooved surface to ensure friction, preventing the strapping from slipping through the recycling feeding mechanism. At the same time, this grooved surface structure, combined with the spring's squeezing force, can also provide an elastic rolling effect on the strapping, effectively rolling (flattening) some bent areas of the used strapping to ensure smooth conveying and provide a guarantee for subsequent shearing.

[0037] The gap between the left and right limiting blocks and the upper roller prevents the strapping from getting caught in the roller during the recycling process, thus avoiding recycling failure due to equipment downtime. The limiting plate is in a closed state with the frame during the operation of the mechanism to prevent the strapping from swinging and deviating. Under the restriction of the limiting blocks, the strapping will smoothly enter the recycling and cutting mechanism.

[0038] In use, the pressing cylinder 1 drives the upper roller assembly 2 to move downward, and the upper roller assembly 2 presses down on the packing strap. Under the action of the spring, the upper roller 23 will move up and down according to the thickness of the packing strap to ensure sufficient pressure on the packing strap. At this time, the lower roller 3 starts to rotate under the drive of the motor, and the packing strap is transported out of the recycling feeding mechanism by the rolling of the upper roller and the lower roller.

[0039] Optionally, the motor 4 is fixedly mounted on the frame 5, and the motor 4 drives the lower roller 3 of the recycling feeding mechanism to rotate synchronously through the synchronous belt 6 of the auxiliary device; during recycling feeding, the lower roller 3 drives the upper roller 23 of the recycling feeding mechanism to rotate through friction.

[0040] Optionally, after the strapping enters the equipment, the upper roller assembly 2 of the recycling feeding mechanism presses the strapping downwards by the pressing cylinder 1 of the recycling feeding mechanism, and the motor 4 of the power mechanism drives the lower roller 3 to rotate through the synchronous belt 6. Under the action of the upper and lower rollers, the strapping is gradually fed out.

[0041] Optionally, a recycling shearing mechanism is also included, which includes a tape-cutting cylinder 9, a cutter assembly, and a guide seat 72; the recycling feeding mechanism is responsible for continuously feeding the packing tape to the recycling shearing mechanism, and the recycling shearing mechanism is responsible for segmenting and cutting the packing tape.

[0042] Optionally, the left and right limiting blocks 26 and the frame 5 form a conveyor channel 8, and the recycling shearing mechanism is provided on one side of the conveyor channel 8.

[0043] Optionally, a guide partition 81 is provided between the conveyor 8 and the recycling shearing mechanism, and a packing strap guide 82 is provided on the guide partition 81 corresponding to the conveyor 8; the cutter assembly is provided on one side of the packing strap guide 82; the cutter assembly includes an upper blade 7 and a lower blade 71; the upper blade 7 is driven to move up and down by a cutting cylinder 9. The limiting piece 27 extends from the left and right limiting blocks 26 to the guide seat 72 to maintain the limiting of the packing strap until the shearing is completed.

[0044] The beneficial effects of adopting the above scheme are as follows:

[0045] By using the compression of the upper roller assembly 2 and the lower roller 3, the packing strap is elastically clamped and conveyed, which improves the conveying effect and prevents the strap from jamming. At the same time, the elastic compression has a roller pressing effect on the conveyed packing strap. For a bent section of packing strap, it can be roller pressed flat. As for the double-layer packing strap phenomenon at the knot connection, if the compression force is too large, the spring will contract and will not affect the normal transmission of the packing strap.

[0046] The set-up conveyor 8 and packing tape guide 82, such as Figures 5-7 As shown, this is mainly to control the stress that may occur on the packing strap during the above process, and to effectively limit the space of the packing strap, preventing it from warping or deviating due to high stress during the process, thus affecting the subsequent shearing effect.

[0047] Optionally, the guide seat 72 is also included, which is provided with a guide groove for guiding the upper blade 7.

[0048] The present invention solves the problems in the background art, and its operating principle is as follows:

[0049] First, such as Figure 1 As shown, the strapping is fed in from the left side between the upper roller assembly 2 and the lower roller 3. After being elastically squeezed by the upper roller assembly 2 and rolled flat by the grooves on the surface of the upper roller 23, the strapping is flattened. Its front end is limited by the conveyor 8 and the strapping guide 82 and continues to be conveyed, effectively avoiding the strapping getting stuck in the rotating roller or curling. After being conveyed to the recycling shearing mechanism, the strapping is cut by the combination of the upper blade 7 and the lower blade 71 in an up-and-down motion, which significantly improves the shearing effect and prevents the strapping from curling and accumulating at the cutter due to continuous shearing and the continuous conveying of the strapping from the rear, thus preventing the equipment from jamming. The effect is good.

[0050] A method for recycling and cutting packing tape, using a packing tape recycling roller cutting mechanism as described above, includes: firstly, using an elastically telescopic upper roller (23) in combination with a lower roller to elastically roll the packing tape to be recycled; then, by setting a conveyor channel and a packing tape guide channel, spatially limiting the conveyed packing tape; and finally, setting the recycling cutting mechanism behind the packing tape guide channel, and cutting the packing tape by using an upper blade and a lower blade to cut it up and down.

[0051] This method can achieve the following: 1. Effectively prevent used packing straps (especially those that are bent, thinned, or have double-layered joints) from jamming or curling inside the equipment; 2. By first elastically squeezing and rolling the packing straps flat, stress is effectively limited while ensuring the flatness of the packing straps before cutting (maintaining a good cutting position for the packing straps), thereby significantly improving the success rate of cutting and ensuring the cutting effect.

[0052] The above description of the embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shearing mechanism for a packing strap recycling roller, characterized in that: The system includes a recycling feeding mechanism, a power mechanism, and auxiliary components. The recycling feeding mechanism includes a pressing cylinder (1), an upper roller assembly (2), and a lower roller (3). The power mechanism includes a motor (4), and the auxiliary components include a frame (5) and a synchronous belt (6). The recycling feeding mechanism is responsible for continuously conveying the packing straps, the power mechanism is responsible for providing power to the recycling feeding mechanism, and the auxiliary components are responsible for connecting the motor (2) and the recycling feeding mechanism to transmit power to the recycling feeding mechanism. The system also includes a recycling shearing mechanism, which includes a cutting cylinder (9), a cutting blade assembly, and a guide seat (72). The recycling feeding mechanism is responsible for continuously conveying the packing straps to the recycling shearing mechanism, and the recycling shearing mechanism is responsible for segmenting and shearing the packing straps. The upper roller assembly (2) includes an upper roller (23), an upper roller shaft (24), a bearing (25), left and right limit blocks (26), and a limit piece (27); the upper roller shaft (24) is connected to the upper roller (23) through the bearing (25); the upper roller shaft (24) can move up and down under the drive of the upper roller (23); a gap is left between the left and right limit blocks (26) and the outer circle of the upper roller (23) to prevent the packing strap from passing through, ensuring the smooth operation of the upper roller and preventing the packing strap from being caught in the upper roller; the limit piece (27) is in a closed state with the frame (5) during the operation of the mechanism to prevent the packing strap from swinging off the roller; The left and right limit blocks (26) and the frame (5) form a conveyor channel (8).

2. The packing strap recycling roller shearing mechanism according to claim 1, characterized in that: The pressing cylinder (1) of the recycling feeding mechanism is fixedly installed on the frame (5). The upper roller assembly (2) of the recycling feeding mechanism is installed on the lower part of the push rod of the pressing cylinder (1). The lower roller (3) of the recycling feeding mechanism is fixedly installed on the frame (5) and driven to rotate by the motor (4). The vertical movement of the upper roller assembly (2) is driven by the pressing cylinder (1).

3. The packing tape recycling roller shearing mechanism according to claim 1, characterized in that: The motor (4) is fixedly installed on the frame (5). The motor (4) drives the lower roller (3) of the recycling feeding mechanism to rotate synchronously through the synchronous belt (6) of the auxiliary device. During recycling feeding, the lower roller (3) drives the upper roller (23) of the recycling feeding mechanism to rotate through friction.

4. The packing strap recycling roller shearing mechanism according to claim 1, characterized in that: After the packing strap enters the equipment, the upper roller assembly (2) of the recycling feeding mechanism presses the packing strap down on the pressing cylinder (1) of the recycling feeding mechanism. The motor (4) of the power mechanism drives the lower roller (3) to rotate through the synchronous belt (6). Under the action of the upper and lower rollers, the packing strap is gradually fed out.

5. The packing strap recycling roller shearing mechanism according to claim 1, characterized in that: The recycling shearing mechanism is provided on one side of the conveyor (8).

6. The packing strap recycling roller shearing mechanism according to claim 5, characterized in that: A guide partition (81) is provided between the conveyor (8) and the recycling shearing mechanism. A packing guide (82) is provided on the guide partition (8) corresponding to the conveyor (8). The cutter group is provided on one side of the packing guide (82). The cutter group includes an upper blade (7) and a lower blade (71). The upper blade (7) is driven to move up and down by a cutting cylinder (9).

7. The packing strap recycling roller shearing mechanism according to claim 6, characterized in that: It also includes the guide seat (72), which is provided with a guide groove for guiding the upper blade (7).

8. The packing tape recycling roller shearing mechanism according to claim 7, characterized in that: The limiting piece (27) extends from the left and right limiting blocks (26) to the guide seat (72) to maintain the limiting of the packing strap until the cutting is completed.

9. A method for recycling and cutting packing tape, characterized in that: The method of using a packing tape recycling roller shearing mechanism as described in any one of claims 1 to 8 includes: firstly, using an elastically telescopic upper roller (23) in combination with a lower roller to elastically roll the packing tape to be recycled; then, by setting a conveyor channel and a packing tape guide channel, spatially limiting the conveyed packing tape; and finally, setting the recycling shearing mechanism behind the packing tape guide channel, and using an upper blade and a lower blade to shear the packing tape up and down.

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