Wire cutting mechanism

Abstract

The utility model provides a kind of wire cutting mechanism, belong to wire recycling technical field.It solves the technical problems such as the positioning ability of existing cutting equipment to wire, the last section of wire cannot be stably cut and so on.This line cutting mechanism's left and right sides of feed channel are equipped with feed roller, driving shaft is installed in the rear of cutting base, moving knife disc is fixedly connected on driving shaft and can rotate synchronously with driving shaft, moving knife disc is provided with moving blade, moving blade can rotate along with moving knife disc and cut wire that stretches out from the rear end of feed channel, the edge of moving blade is close to the trailing edge of feed channel.The utility model makes the edge of moving blade close to the trailing edge of feed channel, reduce the distance between feed roller clamping point and edge, effectively solve the problem that last small section of wire is taken away by moving blade and cannot be completely cut off when cutting due to overhanging too long, ensure that the wire particle after cutting is uniform.

Description

Technical Field

[0001] This utility model belongs to the field of wire recycling technology, and specifically refers to a wire pelletizing mechanism. Background Technology

[0002] With economic development and urban expansion, the number of discarded electrical wires has increased dramatically. It is common to see wires being burned in remote rural areas for metal recycling, severely damaging the environment.

[0003] Currently, although there are some methods for processing waste wires, such as low-temperature freezing, pyrolysis of plastic sheath, chemical soaking, and mechanical stripping, each with its own advantages, they generally suffer from drawbacks such as large investment, high operating costs, low efficiency, complex technology, high energy consumption, being impractical and unsuitable for small-scale imitation.

[0004] To address this, utility model patent application number 201620116869.7 provides a high-speed pelletizer for waste electrical wires. It includes two sets of rollers arranged laterally at the feed end of the machine base, each set comprising two longitudinally arranged rollers; a cutter shaft with a cutter blade is positioned on the side of the two roller sets away from the feed end of the machine base, with a screen positioned opposite each other at the bottom of the cutter shaft; and an eccentric wheel mounted on the machine base for driving the screen to reciprocate. This high-speed pelletizer for waste electrical wires can effectively cut electrical wires into particles with a length of 1 / 2 to 4 / 5 of the wire diameter. The particles are then sent to an umbrella-shaped plastic mill for grinding.

[0005] However, the pelletizers mentioned above still have the following problems:

[0006] 1. The distance between the tie roller and the cutter is too far, which limits the positioning effect of the tie roller on the wire. The wire cannot be cut perpendicular to the cutter, resulting in uneven particle size after cutting, or even getting stuck between the cutter and the machine base, affecting the stability of the pelletizer during operation.

[0007] 2. If the distance between the tie roller and the cutter is too far, the last section of the wire will not have the power to drive forward after it detaches from the tie roller. It will easily accumulate on the machine base or fall directly onto the screen under the action of the cutter, which will prevent it from being granulated properly. It will need to be picked up manually later. Utility Model Content

[0008] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a wire granulation mechanism with stable granulation effect, especially with good granulation effect for the last small section of wire.

[0009] The objective of this utility model can be achieved through the following technical solutions:

[0010] A wire pelletizing mechanism, characterized in that it includes a pelletizing base, a drive shaft, and a moving cutter disc.

[0011] The pelletizing base is provided with at least one feeding channel that runs through it from front to back. Each feeding channel has feeding rollers on both sides that drive the electric wire to move backward. The feeding rollers on both sides of each feeding channel rotate in opposite directions. The drive shaft is installed at the rear of the pelletizing base. The moving cutter disc is fixedly connected to the drive shaft and can rotate synchronously with the drive shaft. The moving cutter disc is provided with moving blades. The moving blades can rotate with the moving cutter disc and cut the electric wires extending from the rear end of the feeding channel. The cutting edge of the moving blades is close to the rear edge of the feeding channel.

[0012] This wire pelletizing mechanism uses oppositely oriented feed rollers to stably feed the wire backward. The key is ensuring the rotating blade's edge is tightly against the rear edge of the feed channel. This design effectively solves the problem of the last small section of wire being pulled away by the blade due to excessive overhang, preventing complete cutting and avoiding the risk of machine jamming. It ensures clean and efficient separation of wire particles with each cut, laying a reliable foundation for the subsequent efficient separation of copper wire and plastic sheath. Simultaneously, the overall structure is compact, integrating feeding and cutting. The aforementioned feed rollers, in addition to stably feeding the wire backward, also clamp it, preventing the wire from being pulled by the blade during cutting, which could lead to uneven particle size or even incomplete wire cutting.

[0013] In the above-mentioned wire pelletizing mechanism, a pelletizing groove that cooperates with the feeding channel is provided on the rear side of the pelletizing base. The rear end of the feeding channel is connected to the bottom of the corresponding pelletizing groove, and the moving blade can rotate into the pelletizing groove.

[0014] Setting a pelletizing groove at the rear end of the feeding channel reduces the distance between the cutting point and the clamping point of the feeding rollers. This ensures that when the moving blade makes the last cut, the wire is still clamped by the two feeding rollers, effectively solving the problem of the last small section of wire being carried away by the blade and not being completely cut off, thus avoiding the risk of machine jamming. Furthermore, the moving blade can rotate into the groove for cutting, providing crucial radial support and constraint space for the wire near the cutting point. This greatly suppresses the bending, jumping, or lateral displacement of the wire under the high-speed impact of the moving blade. Combined with the blade spacing of less than 1mm, this ensures that the wire is cut instantly, accurately, and completely, completely eliminating the risk of the end residue being carried away. At the same time, the pelletizing groove also helps guide the pellets and accommodate a small amount of debris.

[0015] In the above-mentioned wire cutting mechanism, a number of moving blades are arranged at intervals along the circumference of the moving blade disc, and the cutting edges of all moving blades are located on the same circumferential surface and the circumferential surface is coaxial with the drive shaft.

[0016] Multiple moving blades are evenly arranged circumferentially on the moving cutter head, and all cutting edges are precisely located on the coaxial circumferential surface, which significantly improves cutting efficiency (multiple cuts can be completed in one rotation). It also ensures that the relative position of the cutting edge of each moving blade to the rear edge of the feed channel is constant when the blade reaches the cutting point, and the cutting force is uniform. This further enhances the stability and repeatability of the cutting action, effectively prevents wire residue or uneven granulation caused by individual blade deviation, and ensures the quality stability of mass production.

[0017] In the aforementioned wire pelletizing mechanism, there are multiple feeding channels, and the drive shaft is equipped with moving cutter discs corresponding to each feeding channel. By setting up multiple feeding channels and corresponding roller sets and cutting units, parallel cutting of multiple wires is achieved, significantly improving production efficiency.

[0018] In the above-mentioned wire pelletizing mechanism, a drive chamber is formed in the pelletizing base, one side of the drive chamber is connected to the corresponding feeding channel, the feeding roller is rotatably installed in the drive chamber, the driven gear is disposed on the upper or lower side of the pelletizing base, the driven gear and the feeding roller are connected by a rotating shaft, and a bearing is disposed on the upper and / or lower side of the feeding roller.

[0019] The feed roller and bearing are integrated into the drive chamber inside the base, resulting in a compact structure that effectively isolates external dust pollution and protects the stability of the transmission. The shaft connects to and supports the feed roller with bearings, which greatly reduces rotational friction resistance and ensures the concentricity, smoothness, and load-bearing capacity of the feed roller. This makes wire feeding more stable and uniform, avoiding unstable feeding caused by poor or wobbly feed roller rotation, and providing a solid guarantee for precise cutting.

[0020] In the above-mentioned wire pelletizing mechanism, a driving component is included, which drives the driving gear to rotate. A synchronously rotating driven gear is connected above or below the feeding roller. The two driven gears mesh, and the driving gear meshes with one of the driven gears.

[0021] The feeding rollers are driven by gear transmission. Through the meshing relationship (two driven gears meshing, and one of them is driven by the driving gear), the feeding rollers on both sides of the same feeding channel are strictly synchronized and rotate in opposite directions. This achieves stable, continuous and slip-free clamping and conveying of the wire. Uniform and stable feeding is the key to ensuring consistent cutting length and preventing the wire from shifting due to uneven force at the cutting point. This improves the stability and reliability of the entire pelletizing process from the source.

[0022] In the above-mentioned wire pelletizing mechanism, when there are multiple feeding channels and moving cutter discs, each feeding channel is provided with feeding rollers on both the left and right sides, each feeding roller is connected to a driven gear, all driven gears mesh sequentially in the left and right direction, and the driving gear meshes with the leftmost or rightmost driven gear.

[0023] All driven gears mesh sequentially and the end gear is driven by a single driving gear, ensuring that the roller assemblies of all feeding channels receive completely synchronized reverse rotational power. This guarantees that the feeding speed of each wire is absolutely consistent, which not only improves the overall efficiency of multi-line pelletizing, but more importantly, eliminates the risk of uncoordinated cutting actions or abnormal stress on individual wires due to differences in the feeding speed of each channel, greatly improving the overall system stability under multi-line operation.

[0024] In the above-mentioned wire pelletizing mechanism, the pelletizing base includes an upper pressure plate, a lower pressure plate, connecting bolts, and a positioning sleeve. The positioning sleeve is located between the upper pressure plate and the lower pressure plate, forming a feeding gap between them. The upper pressure plate and the lower pressure plate are fixedly connected by multiple connecting bolts that pass through them. The positioning sleeve is sleeved on the connecting bolts. The feeding channel is part of the feeding gap. Grooves are provided on the lower side of the upper pressure plate and the upper side of the lower pressure plate. The two oppositely arranged grooves enclose and form a driving chamber.

[0025] The structure of the pelletizing base is clear, making it easy to manufacture, assemble, and maintain; the groove design facilitates the installation of bearings and feed rollers; the positioning sleeve design allows for the replacement of positioning sleeves according to different sizes of wires, thereby achieving a certain degree of adjustable feed gap and improving the adaptability of this pelletizing mechanism.

[0026] In the above-mentioned wire pelletizing mechanism, the lower side of the upper pressure plate and the upper side of the lower pressure plate are both multi-step, and the height of the feeding gap formed by the cooperation of the upper and lower pressure plates increases stepwise from left to right, and the central axis of all feeding gaps is located on the same horizontal plane.

[0027] The design of multiple feed gaps at different heights allows this wire pelletizing mechanism to simultaneously adapt to the pelletizing action of wires of different sizes, thus improving the adaptability of this wire pelletizing mechanism.

[0028] Compared with the prior art, the technical effects of this utility model are as follows:

[0029] This invention uses oppositely oriented feeding rollers to stably clamp and feed the wire backward. The key is ensuring the cutting edge of the rotating blade is tightly against the rear edge of the feeding channel. This design effectively solves the problem of the last small section of wire being pulled away by the blade during cutting due to excessive overhang, preventing complete severance and avoiding the risk of machine jamming. It ensures clean and efficient separation of wire particles with each cut, laying a reliable foundation for the subsequent efficient separation of copper wire and plastic sheath. Simultaneously, the overall structure is compact, integrating feeding and cutting. In addition to stably feeding the wire backward, the aforementioned feeding rollers also clamp the wire, preventing it from being pulled by the blade during cutting, which could lead to uneven particle size or even incomplete wire severance. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0031] Figure 2 This is a top view of the structure of this utility model.

[0032] Figure 3 yes Figure 2 Sectional view at point AA.

[0033] Figure 4 yes Figure 2 Sectional view at point BB.

[0034] Figure 5 This is a cross-sectional structural schematic diagram and a partial enlarged view of the feed gap of this utility model.

[0035] Figure 6 This is the front view of the utility model. Figure 1 .

[0036] Figure 7 This is the front view of the utility model. Figure 2 .

[0037] In the diagram, 1. Pelletizing base; 11. Feed roller; 12. Pelletizing trough; 13. Drive chamber; 131. Groove; 14. Upper pressure plate; 15. Lower pressure plate; 16. Connecting bolt; 17. Positioning sleeve; 18. Feed gap; 181. Feed channel; 2. Drive shaft; 3. Moving cutter disc; 31. Moving blade; 41. Drive component; 42. Drive gear; 43. Driven gear; 44. Rotating shaft; 45. Bearing. Detailed Implementation

[0038] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0039] This wire pelletizing mechanism includes a pelletizing base 1, a drive shaft 2, and a moving cutter disc 3. The pelletizing base 1 is provided with at least one feeding channel 181 that runs through it from front to back. Each feeding channel 181 has feeding rollers 11 on both the left and right sides that drive the wire to move backward. The feeding rollers 11 on both sides of each feeding channel 181 rotate in opposite directions. The drive shaft 2 is mounted at the rear of the pelletizing base 1. The moving cutter disc 3 is fixedly connected to the drive shaft 2 and can rotate synchronously with the drive shaft 2. The moving cutter disc 3 is provided with a moving blade 31. The moving blade 31 can rotate with the moving cutter disc 3 and cut the wire extending from the rear end of the feeding channel 181. The cutting edge of the moving blade 31 is close to the rear edge of the feeding channel 181.

[0040] This wire pelletizing mechanism uses oppositely oriented feed rollers 11 to stably feed the wire backward. The key is ensuring the cutting edge of the rotating blade 31 is tightly against the rear edge of the feed channel 181. This design effectively solves the problem of the last small section of wire being pulled away by the passive blade 31 due to excessive overhang, preventing complete cutting and avoiding the risk of machine jamming. It ensures clean and efficient separation of wire particles with each cut, laying a reliable foundation for the subsequent efficient separation of copper wire and plastic sheath. Simultaneously, the overall structure is compact, integrating feeding and cutting. The feed rollers 11, in addition to stably feeding the wire backward, also clamp it, preventing the passive blade 31 from pulling the wire during cutting, which could lead to uneven particle size or even incomplete wire cutting.

[0041] like Figure 1 and Figure 5 As shown, a pelletizing groove 12 that cooperates with the feed channel 181 is provided on the rear side of the pelletizing base 1. The rear end of the feed channel 181 is connected to the bottom of the corresponding pelletizing groove 12, and the moving blade 31 can rotate into the pelletizing groove 12. A pelletizing groove 12 is provided at the rear end of the feed channel 181, which can reduce the distance between the cutting point and the clamping point of the feed roller 11. This ensures that when the moving blade 31 makes the last cut, the wire is still clamped by the two feed rollers 11. This effectively solves the problem that the last small section of wire is carried away by the passive blade 31 and cannot be completely cut during cutting, avoiding the risk of machine jamming. Furthermore, the moving blade 31 can rotate into the groove for cutting, providing key radial support and constraint space for the wire near the cutting point. This greatly suppresses the bending, jumping or lateral displacement of the wire under the high-speed impact of the moving blade 31. Together with the blade spacing of less than 1mm, it ensures that the wire is cut instantly, accurately and completely, completely eliminating the risk of the end residue being carried away. At the same time, the pelletizing groove 12 also helps to guide the pellets and accommodate a small amount of debris.

[0042] like Figure 1 and Figure 2As shown, a number of moving blades 31 are spaced apart along the circumference of the moving cutter head 3. The cutting edges of all moving blades 31 are located on the same circumferential surface, which is coaxial with the drive shaft 2. The uniform circumferential arrangement of multiple moving blades 31 on the moving cutter head 3, with all cutting edges precisely located on the coaxial circumferential surface, significantly improves cutting efficiency (multiple cuts can be completed in one rotation) and ensures that the relative position of the cutting edge of each moving blade 31 with the rear edge of the feed channel 181 is constant when it reaches the cutting point, resulting in uniform cutting force. This further enhances the stability and repeatability of the cutting action, effectively preventing wire residue or uneven pelleting caused by individual blade deviations, and ensuring the quality stability of mass production.

[0043] Furthermore, there are multiple feeding channels 181, and the drive shaft 2 is equipped with moving cutter discs 3 that correspond one-to-one with each feeding channel 181. By setting up multiple feeding channels 181 and corresponding roller sets and cutting units, parallel cutting of multiple wires can be achieved, significantly improving production efficiency.

[0044] like Figure 3 As shown, a drive chamber 13 is formed inside the pelletizing base 1. One side of the drive chamber 13 is connected to the corresponding feed channel 181. The feed roller 11 is rotatably installed in the drive chamber 13. The driven gear 43 is set on the upper or lower side of the pelletizing base 1. The driven gear 43 and the feed roller 11 are connected by a rotating shaft 44. Bearings 45 are provided on the upper and / or lower side of the feed roller 11. Integrating the feed roller 11 and the bearings 45 into the drive chamber 13 inside the base results in a compact structure that effectively isolates external dust pollution and protects the stability of the transmission. The rotating shaft 44 connects to and supports the feed roller 11 using the bearings 45, which significantly reduces rotational friction resistance and ensures the concentricity, smoothness, and load-bearing capacity of the feed roller 11. This makes the wire feeding more stable and uniform, avoiding unstable feeding caused by poor rotation or shaking of the feed roller 11, and providing a solid guarantee for precise cutting.

[0045] Furthermore, such as Figure 6 and Figure 7 As shown, the device includes a drive unit 41, which drives a drive gear 42 to rotate. A synchronously rotating driven gear 43 is connected above or below the feed roller 11. The two driven gears 43 mesh, and the drive gear 42 meshes with one of the driven gears 43. By using gear transmission to drive the feed roller 11, the meshing relationship (two driven gears 43 meshing, and the drive gear 42 driving one of them) ensures that the feed rollers 11 on both sides of the same feed channel 181 rotate in strict synchronous opposite directions. This achieves stable, continuous, and slip-free clamping and conveying of the wire. Uniform and stable feeding is a key prerequisite for ensuring consistent cutting length and preventing the wire from shifting due to uneven force at the cutting point, thus improving the stability and reliability of the entire pelletizing process from the source. Figure 6 and Figure 7 The active gear 42 and driving component 41 in the figure are simplified diagrams and are only for illustration purposes. They cannot be used to limit the scope of protection of this utility model.

[0046] Furthermore, when there are multiple feeding channels 181 and moving cutter discs 3, each feeding channel 181 is equipped with feeding rollers 11 on both the left and right sides. Each feeding roller 11 is connected to a driven gear 43. All driven gears 43 mesh sequentially in the left-right direction, and the driving gear 42 meshes with the leftmost or rightmost driven gear 43. All driven gears 43 mesh sequentially and are driven by a single driving gear 42 to ensure that the roller groups of all feeding channels 181 obtain completely synchronized reverse rotational power, ensuring that the feeding speed of each wire is absolutely consistent. This not only improves the overall efficiency of multi-line pelletizing, but more importantly, it eliminates the risk of uncoordinated cutting actions or abnormal stress on individual wires due to differences in the feeding speed of each channel, greatly improving the overall system stability under multi-line operation.

[0047] like Figure 1-6 As shown, the pelletizing base 1 includes an upper pressure plate 14, a lower pressure plate 15, connecting bolts 16, and a positioning sleeve 17. The positioning sleeve 17 is located between the upper pressure plate 14 and the lower pressure plate 15, forming a feeding gap 18 between them. The upper pressure plate 14 and the lower pressure plate 15 are fixedly connected by multiple connecting bolts 16 that pass through them. The positioning sleeve 17 is fitted onto the connecting bolts 16. The feeding channel 181 is part of the feeding gap 18. Grooves 131 are provided on the lower side of the upper pressure plate 14 and the upper side of the lower pressure plate 15. The two oppositely arranged grooves 131 enclose the driving chamber 13. The structure of the pelletizing base 1 is clear, which facilitates manufacturing, assembly, and maintenance. The design of the grooves 131 facilitates the installation of bearings 45 and feeding rollers 11. The design of the positioning sleeve 17 allows for replacement of the positioning sleeve 17 according to different sizes of wires, thereby achieving a certain degree of adjustability of the feeding gap 18 and improving the adaptability of this pelletizing mechanism.

[0048] like Figure 7 As shown, the lower side of the upper pressure plate 14 and the upper side of the lower pressure plate 15 are both stepped. The height of the feeding gap 18 formed by the cooperation of the upper pressure plate 14 and the lower pressure plate 15 increases in a stepped manner from left to right, and the central axis of all feeding gaps 18 is located on the same horizontal plane. The design of multiple feeding gaps 18 with different heights enables this wire pelletizing mechanism to simultaneously adapt to the pelletizing action of wires of different sizes, thus improving the adaptability of this wire pelletizing mechanism.

[0049] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection defined by the claims of the present utility model.

Claims

1. A wire pelletizing mechanism, characterized in that: The device includes a pelletizing base (1), a drive shaft (2), and a moving cutter disc (3). The pelletizing base (1) is provided with at least one feed channel (181) that runs through it from front to back. Each feed channel (181) has feed rollers (11) on both the left and right sides that drive the electric wire to move backward. The feed rollers (11) on both sides of each feed channel (181) rotate in opposite directions. The drive shaft (2) is installed at the rear of the pelletizing base (1). The moving cutter disc (3) is fixedly connected to the drive shaft (2) and can rotate synchronously with the drive shaft (2). The moving cutter disc (3) is provided with a moving blade (31). The moving blade (31) can rotate with the moving cutter disc (3) and cut the electric wire extending from the rear end of the feed channel (181). The cutting edge of the moving blade (31) is close to the rear edge of the feed channel (181).

2. The wire cutting mechanism according to claim 1, characterized in that: The rear side of the pelletizing base (1) is provided with a pelletizing groove (12) that cooperates with the feeding channel (181). The rear end of the feeding channel (181) is connected to the bottom of the corresponding pelletizing groove (12). The moving blade (31) can rotate into the pelletizing groove (12).

3. The wire cutting mechanism according to claim 1, characterized in that: The moving cutter head (3) is provided with a number of moving blades (31) spaced apart along its circumference. The cutting edges of all moving blades (31) are located on the same circumferential surface and the circumferential surface is coaxial with the drive shaft (2).

4. The wire cutting mechanism according to claim 1, characterized in that: There are multiple feeding channels (181), and the drive shaft (2) is provided with moving cutter discs (3) that correspond one-to-one with the feeding channels (181).

5. The wire cutting mechanism according to claim 1, characterized in that: The pelletizing base (1) has a drive chamber (13) formed inside. One side of the drive chamber (13) is connected to the corresponding feed channel (181). The feed roller (11) is rotatably installed in the drive chamber (13). The driven gear (43) is set on the upper or lower side of the pelletizing base (1). The driven gear (43) and the feed roller (11) are connected by a rotating shaft (44). The upper and / or lower side of the feed roller (11) is provided with a bearing (45).

6. The wire cutting mechanism according to claim 1, characterized in that: Includes a drive unit (41), which drives the drive gear (42) to rotate. The feed roller (11) is connected above or below a synchronously rotating driven gear (43). The two driven gears (43) mesh, and the drive gear (42) meshes with one of the driven gears (43).

7. The wire cutting mechanism according to claim 6, characterized in that: When there are multiple feeding channels (181) and moving cutter discs (3), each feeding channel (181) is provided with feeding rollers (11) on both the left and right sides, and each feeding roller (11) is connected to a driven gear (43). All driven gears (43) mesh sequentially in the left and right directions, and the driving gear (42) meshes with the leftmost or rightmost driven gear (43).

8. A wire cutting mechanism according to any one of claims 1-7, characterized in that: The pelletizing base (1) includes an upper pressure plate (14), a lower pressure plate (15), connecting bolts (16) and a positioning sleeve (17). The positioning sleeve (17) is located between the upper pressure plate (14) and the lower pressure plate (15) and forms a feeding gap (18) between them. The upper pressure plate (14) and the lower pressure plate (15) are fixedly connected by multiple connecting bolts (16) that pass through them. The positioning sleeve (17) is sleeved on the connecting bolts (16). The feeding channel (181) is part of the feeding gap (18). The lower side of the upper pressure plate (14) and the upper side of the lower pressure plate (15) are both provided with grooves (131). The two oppositely arranged grooves (131) enclose a driving chamber (13).

9. The wire cutting mechanism according to claim 8, characterized in that: The lower side of the upper pressure plate (14) and the upper side of the lower pressure plate (15) are both multi-step. The height of the feed gap (18) formed by the cooperation of the upper pressure plate (14) and the lower pressure plate (15) increases stepwise from left to right. The central axis of all feed gaps (18) is located on the same horizontal plane.

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