Automatic powder coating device for wire production

Abstract

The invention relates to an automatic powder coating device for electric wire production in the technical field of electric wire production, the automatic powder coating device comprises a powder coating bin and a driving motor used for driving the powder coating bin to rotate, a wire feeding channel is arranged in the powder coating bin in a penetrating mode from left to right, and elastic particles capable of rolling are arranged in the powder coating bin. The elastic particles are composed of a balance weight core and a sponge layer wrapping the outer surface of the balance weight core, a plurality of material guide plates are sequentially arranged on the inner wall of the powder coating bin at intervals along the circumference of the powder coating bin, an inlet is formed in the middle of the powder coating bin, the powder coating bin is sleeved with an annular protective cover, and the annular protective cover is arranged on the outer side of the powder coating bin. And one end of the annular shield is provided with a connector. Through the rotating powder passing bin, the elastic particles in the powder passing bin are continuously driven to roll, so that the elastic particles adhere powder to a wire core passing through the wire feeding channel, and meanwhile, through collision contact between the elastic particles and the wire core in the rolling process, the powder adhered to the surface of the wire core is more uniform.

Description

Technical Field

[0001] This invention relates to the field of wire manufacturing technology, and more specifically to an automatic powder-passing device for wire manufacturing. Background Technology

[0002] In the production of wires and cables, especially fire-resistant cables, multi-core cables, and some heat-resistant cables, as well as drag chain lines with high mechanical bending performance requirements, a layer of insulating powder needs to be applied between the cable core and the insulation layer, and between the insulation layer and the sheath, to prevent adhesion, enhance lubrication, loosen the binding between the cores, and improve fire resistance.

[0003] Currently, common semi-automatic powder passing devices are simple powder box structures with wires passing through them. Powder adheres to the wires through natural flow. However, ordinary powder passing machines on the market generally suffer from poor uniformity: the natural flow of powder is unstable, easily forming accumulations or gaps on the wire surface, resulting in uneven powder layer thickness. Simultaneously, the powder supply cannot be precisely controlled, with large amounts of powder spilling and flying away unused, causing environmental pollution and material waste. Furthermore, the powder loading of ordinary powder passing devices is significantly affected by the wire passing speed; too slow a speed results in insufficient or no powder loading, while too fast a speed may carry out excessive powder. In addition, workers must continuously monitor the powder level in the box and replenish it promptly, creating a dusty environment harmful to health, and ensuring consistent powder loading is difficult. Different wire specifications require different powder layer thicknesses, and traditional devices struggle to achieve precise and rapid adjustments, failing to support stable production throughout the entire process.

[0004] Ultrasonic powder coating machines use ultrasonic waves to evenly coat various powders onto the surface of the wire cores, achieving a surface powder coating effect. While this equipment can generally guarantee the uniformity and stability of the powder coating amount, it still requires manual powder replenishment at regular intervals. Furthermore, it is only suitable for products with a small powder coating amount and cannot meet the needs of wires and cables with large powder coating amounts. It has limitations such as a narrow range of applications, high price, and high maintenance requirements.

[0005] Therefore, it is necessary to develop an automatic powder-coating device for wire production that is automatic, uniform, efficient and adjustable, in order to overcome the shortcomings of the existing technology. Summary of the Invention

[0006] The present invention provides an automatic powder-passing device for wire production to solve the problems mentioned in the background art.

[0007] The objective of this invention is achieved through the following means: An automatic powder-passing device for wire production includes a powder-passing bin and a drive motor for rotating the powder-passing bin. A wire feeding channel is provided through the powder-passing bin from left to right. Rollable elastic particles are provided inside the powder-passing bin.

[0008] As a preferred embodiment of an automatic powdering device for wire production, the elastic particles consist of a counterweight core and a sponge layer wrapped around the outer surface of the counterweight core.

[0009] As a preferred embodiment of an automatic powder-passing device for wire production, the inner wall of the powder-passing chamber is provided with a plurality of guide plates spaced apart along the circumference of the powder-passing chamber, and the guide plates are provided with grooves in the middle.

[0010] As a preferred embodiment of an automatic powder-passing device for wire production, the guide plate is arranged in a V-shape, and the height of the guide plate at both ends gradually decreases towards the center along the direction perpendicular to the powder-passing chamber.

[0011] As a preferred embodiment of an automatic powder-passing device for wire production, both ends of the powder-passing chamber are provided with funnel sections, and both ends of the guide plate are respectively connected to the funnel sections.

[0012] As a preferred embodiment of an automatic powder-passing device for wire production, the powder-passing chamber has an inlet in the middle, and an annular protective cover is fitted on the powder-passing chamber at the position corresponding to the inlet, with an interface provided at one end of the annular protective cover.

[0013] As a preferred embodiment of an automatic powder conveying device for wire production, the interface is connected to a powder feeding module; the powder feeding module includes a conveying cylinder, a screw rod, and a rotary motor. The screw rod is rotatably disposed inside the conveying cylinder, and the rotary motor is connected to one end of the screw rod. The two ends of the conveying cylinder are respectively provided with an inlet and an outlet. A collection hopper is installed on the inlet, and the outlet is connected to the interface.

[0014] As a preferred embodiment of an automatic powder-passing device for wire production, the powder-passing chamber contacts an annular cover via a sealing kit; the sealing kit includes a receiving ring and a sealing ring, the receiving ring being fixedly mounted on the powder-passing chamber, the sealing ring being sleeved on the receiving ring, and the outer surface of the sealing ring being provided with ribbed protrusions for contacting the annular cover.

[0015] As a preferred embodiment of an automatic powder-passing device for wire production, the receiving ring is L-shaped, and one end of the receiving ring is clearance-fitted with the inner wall of the annular protective cover.

[0016] As a preferred embodiment of an automatic powder-passing device for wire production, the two ends of the wire feeding channel are connected by a connecting pipe with a turning structure; the turning structure includes a square tube and a guide bracket, one end of the square tube is connected to the connecting pipe, and the other end is provided with a detachable cover plate, the square tube is provided with an upward-opening guide port, the guide bracket is rotatably mounted on the guide port by a fixed knob, and guide rollers are respectively provided at both ends of the guide bracket.

[0017] This invention uses a rotating powder-passing chamber to continuously drive the internal elastic particles to roll, thereby allowing the elastic particles to adhere the powder to the wire core as it passes through the wire feeding channel. At the same time, during the rolling process, the collision and contact between the elastic particles and the wire core makes the powder adhering to the surface of the core more uniform. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an automatic powder-passing device for wire production according to the present invention; Figure 2 This is an internal schematic diagram of an automatic powder-coating device for wire production according to the present invention; Figure 3 This is a cross-sectional view of an automatic powder-passing device for wire production according to the present invention; Figure 4 This is a schematic diagram illustrating the use of an automatic powder-coating device for wire production according to the present invention; Figure 5 This is a cross-sectional view of the elastic particles in this invention; Figure 6 This is a front view of the powder conveying hopper in Example 1; Figure 7 for Figure 6 Sectional view along line AA; Figure 8 for Figure 6 Sectional view along line BB; Figure 9 This is a schematic diagram of the powder hopper structure in this invention; Figure 10 This is a schematic diagram of the powder hopper structure in this invention; Figure 11 for Figure 10 Enlarged diagram of E in the middle; Figure 12 This is a schematic diagram of the powder feeding module in this invention; Figure 13 This is a cross-sectional view of the powder feeding module in this invention; Figure 14 This is a schematic diagram of the transition structure in this invention; Figure 15 This is an exploded view of the transition structure in this invention; Figure 16 This is a front view of the powder conveying hopper in Example 2; Figure 17 for Figure 16 A cross-sectional view along the CC line; Figure 18 for Figure 16 A cross-sectional view along line DD.

[0019] The labels in the attached diagram are as follows: 1-elastic particle, 101-counterweight core, 102-sponge layer, 2-powder hopper, 201-feeding channel, 202-funnel section, 203-inlet, 3-guide plate, 301-groove, 4-ring cover, 401-interface, 402-cavity, 5-conveying cylinder, 501-feed inlet, 502-discharge outlet, 6-sealing ring, 601-rib protrusion, 7-square tube, 701-guide port, 8-guide bracket, 801-guide roller, 9-human-machine interface, 10-outer frame, 11-drive motor, 12-bearing, 13-screw rod, 14-rotary motor, 15-concentrated hopper, 16-receiving ring, 17-fixing knob, 18-connecting pipe, 19-cover plate. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0021] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 the present invention.

[0024] In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning. Example

[0025] In one embodiment of the present invention, such as Figure 1-4 As shown, an automatic powder-passing device for wire production includes an outer frame 10, a powder-passing chamber 2, and a drive motor 11 for rotating the powder-passing chamber 2. A wire feeding channel 201 is provided through the powder-passing chamber 2 from left to right, and rollable elastic particles 1 are provided inside the powder-passing chamber 2.

[0026] The two ends of the powder passing bin 2 are rotatably mounted on the outer frame 10 through bearings 12. The drive motor 11 is fixedly mounted on one side of the outer frame 10, and its output shaft is connected to the coupling at one end of the powder passing bin 2 through a belt for driving the powder passing bin 2 to rotate around its own axis.

[0027] The present invention uses a rotating powder-passing chamber 2 to continuously drive the internal elastic particles 1 to roll, thereby allowing the elastic particles 1 to adhere the powder to the wire core passing through the wire feeding channel 201. At the same time, during the rolling process, the collision and contact between the elastic particles 1 and the wire core makes the powder adhering to the surface of the core more uniform.

[0028] like Figure 5 As shown, the elastic particle 1 consists of a counterweight core 101 and a sponge layer 102 wrapped around the outer surface of the counterweight core 101. The counterweight core 101 increases the weight of the elastic particle 1, giving it sufficient kinetic energy during rolling. The sponge layer 102 has good adsorption properties, effectively adhering to the powder and acting as a buffer when it collides with the wire core, preventing damage to the wire core. This special structure of the elastic particle 1 further ensures the uniformity and quality of the powder adhering to the surface of the wire core.

[0029] Alternatively, the elastic particle 1 can also be made entirely of plastic in one piece, which can still meet the basic requirements for powder adhesion. However, compared to the elastic particle 1 composed of the counterweight core 101 and the sponge layer 102, it is slightly inferior in terms of powder adhesion uniformity and protection effect on the wire core.

[0030] In this embodiment, the elastic particles 1 are spherical. This spherical design allows the elastic particles 1 to roll more smoothly within the powder conveying chamber 2, reducing friction with the inner wall of the chamber and thus improving powder adhesion efficiency. Simultaneously, the spherical elastic particles 1 can make omnidirectional contact with the wire core during rolling, further ensuring uniform powder adhesion. Furthermore, the spherical elastic particles 1 are simpler to manufacture, which helps reduce production costs and improve production efficiency. Of course, depending on actual needs, the elastic particles 1 can also be designed in other shapes, such as elliptical or cylindrical, but the spherical design offers superior overall performance.

[0031] The number of elastic particles 1 is rationally configured based on the volume of the powder-passing chamber 2 and the required powder adhesion density to ensure that the elastic particles 1 can roll fully and make effective contact with the wire core during the rotation of the powder-passing chamber 2. Generally, the filling amount of elastic particles 1 should occupy one-third of the internal space of the powder-passing chamber 2. This ratio is neither too sparse, resulting in insufficient powder adhesion, nor too dense, affecting the normal rolling of the elastic particles 1 and the smooth passage of the wire core. In practical applications, the optimal number of elastic particles 1 can also be determined through multiple tests and adjustments to achieve the best powder-passing effect.

[0032] like Figure 6-8 As shown, multiple guide plates 3 are arranged sequentially at intervals along the circumference of the powder passing chamber 2 on the inner wall of the powder passing chamber 2. The multiple guide plates 3 are horizontal with the extension direction of the wire feeding channel 201. These guide plates 3 can guide the elastic particles 1 to roll along the rotation direction of the powder passing chamber 2, ensuring that the elastic particles 1 can fully contact the wire core in the wire feeding channel 201, thereby improving the efficiency and uniformity of powder adhesion.

[0033] In practical applications, the drive motor 11 drives the powder-passing chamber 2 to rotate via a belt. The powder-passing chamber 2 guides the elastic particles 1 and powder from the bottom upwards along its inner wall via an internal guide plate 3. When the guide plate 3 forms a downward tilt angle, the elastic particles 1 and powder roll down along the guide plate 3 and come into contact with the wire core in the wire feeding channel 201. This cycle repeats, ensuring that the wire core continuously and evenly adheres to the powder as it passes through the wire feeding channel 201. Simultaneously, this design prevents powder accumulation and clumping within the powder-passing chamber 2, ensuring stable operation of the powder-passing device and a good powder-passing effect.

[0034] This circulating powder-passing method not only improves powder utilization and reduces waste, but also ensures that the wire cores continuously and evenly contact the elastic particles 1 and powder as they pass through the wire feeding channel 201, thereby further enhancing the powder adhesion effect. Furthermore, the rotation speed of the powder-passing chamber 2 can be precisely controlled by the drive motor 11 to adapt to the production needs of different specifications of wire cores, enhancing the flexibility and applicability of the equipment.

[0035] like Figure 7 As shown, a V-shaped groove 301 is provided in the middle of the guide plate 3. The design of the V-shaped groove 301 can better concentrate the elastic particles 1 and powder towards the middle of the powder conveying bin 2, reducing the probability of the elastic particles 1 and powder being lost from both ends of the feeding channel 201, thereby further improving the utilization rate of the powder. Furthermore, the groove 301 can also be designed as other shapes such as U-shape or arc, but the V-shaped groove 301 performs better in concentrating the powder and preventing loss. In practical applications, the appropriate shape of the groove 301 can be selected according to specific needs and experimental results. In addition, the number and spacing of the guide plates 3 will also affect the powder conveying effect. Generally speaking, the more guide plates 3 there are and the smaller the spacing, the stronger the guiding effect on the elastic particles 1 and powder, but at the same time, it will also increase the frictional resistance of the inner wall of the powder conveying bin 2. Therefore, it is necessary to reasonably set the number and spacing of the guide plates 3 while ensuring the powder conveying effect.

[0036] Specifically, as the guide plate 3 guides the elastic particles 1 and powder upwards along the inner wall of the powder conveying bin 2, due to the V-shaped groove 301 in the middle of the guide plate 3, the elastic particles 1 and powder will preferentially roll downwards from the V-shaped groove 301 and then converge towards the middle of the powder conveying bin 2, making the distribution of elastic particles 1 and powder around the feeding channel 201 more dense and uniform. This design effectively avoids excessive accumulation of powder at the edge of the powder conveying bin 2, reducing powder waste caused by the edge effect.

[0037] Both ends of the powder-passing hopper 2 are equipped with funnel sections 202, which are designed to gradually narrow, serving to further gather and guide the elastic particles 1 and powder. During the rotation of the powder-passing hopper 2, the funnel sections 202 concentrate the elastic particles 1 and powder from the edge areas towards the center, ensuring that the wire feeding channel 201 is always in a relatively powder-sufficient environment, guaranteeing that the wire core can fully and evenly adhere to the powder as it passes through. Simultaneously, the structure of the funnel sections 202 reduces powder scattering during the addition process, improving the working environment and minimizing powder waste and impact on operator health.

[0038] The two ends of the guide plate 3 are respectively connected to the funnel section 202. This connection design ensures the continuity between the guide plate 3 and the funnel section 202, making the flow of elastic particles 1 and powder in the powder passing chamber 2 smoother. When the powder passing chamber 2 rotates, the guide plate 3 guides the elastic particles 1 and powder upwards, while the funnel section 202 gathers the particles and powder in the edge area towards the center. The two work together to form a highly efficient powder circulation system. This system not only improves the utilization rate of powder, but also ensures that the wire core can continuously and evenly contact the powder when passing through the wire feeding channel 201, thereby improving the powder passing effect.

[0039] like Figure 9-10 As shown, an inlet 203 is provided in the middle of the powder conveying bin 2. A ring-shaped protective cover 4 is fitted onto the powder conveying bin 2 at the position corresponding to the inlet 203. One end of the ring-shaped protective cover 4 is provided with an interface 401, which is used to connect to an external powder conveying pipe. This design allows the powder to smoothly enter the powder conveying bin 2. The ring-shaped protective cover 4 effectively prevents the powder from flying around during its entry into the powder conveying bin 2, avoiding pollution of the working environment and waste of powder. Simultaneously, the ring-shaped protective cover 4 also provides some protection for the inlet 203, preventing external debris from entering the powder conveying bin 2 and affecting the powder conveying effect and normal operation of the equipment. When the powder enters the powder conveying bin 2 through the ring-shaped protective cover 4 and through the interface 401, it quickly participates in the circulation within the powder conveying bin 2, fully mixing with the elastic particles 1, and thus better adhering to the wire core passing through the wire delivery channel 201.

[0040] In this embodiment, the inlet 203 is positioned between two adjacent guide plates 3. This allows the guide plates 3 to compensate for the structural strength loss after the inlet 203 is opened, ensuring that the powder conveying bin 2 maintains stable structural performance during rotation. Simultaneously, this design of the inlet 203 position facilitates the use of the guide plates 3 to break up and guide agglomerated powder into the powder conveying bin 2, preventing agglomerated powder from clogging the inlet 203 or affecting the powder conveying effect.

[0041] In this embodiment, a cavity 402 is provided between the annular protective cover 4 and the powder conveying bin 2. The cavity 402 is located on the outer ring of the inlet 203 and can hold a certain amount of powder. During the rotation of the powder conveying bin 2, direct contact between the annular protective cover 4 and the powder conveying bin 2 is effectively avoided, thereby reducing heat and wear caused by friction and extending the service life of the equipment. Compared to a tightly fitted arrangement of the annular protective cover 4 and the powder conveying bin 2, this design with the cavity 402 significantly reduces the noise level during equipment operation, providing a more comfortable working environment for operators.

[0042] The powder conveying chamber 2 contacts the annular cover 4 via a sealing kit. The sealing kit is made of wear-resistant and corrosion-resistant silicone rubber, and its lip-shaped ridge protrusions 601 tightly conform to the outer wall of the annular cover 4, creating a dynamic seal as the powder conveying chamber 2 rotates. This sealing method effectively prevents powder leakage between the powder conveying chamber 2 and the annular cover 4, and also avoids dust contamination caused by direct friction between metal parts. Simultaneously, the excellent elasticity of the silicone rubber material automatically adapts to the slight radial runout of the powder conveying chamber 2, ensuring long-term stable sealing performance.

[0043] like Figure 11 As shown, the sealing kit includes a receiving ring 16 and a sealing ring 6. The receiving ring 16 is fixedly disposed on the powder passing chamber 2, and the sealing ring 6 is sleeved on the receiving ring 16. The outer surface of the sealing ring 6 is provided with rib protrusions 601 for contacting the annular cover 4.

[0044] This split-type sealing structure facilitates the individual replacement of worn parts, reducing maintenance costs. When the sealing ring 6 wears out due to long-term use, only the sealing ring 6 needs to be replaced, without replacing the entire receiving ring 16, saving material costs and shortening equipment downtime. The ribbed protrusions 601 adopt a multi-layer lip design, which can form a continuous sealing line when the powder conveying chamber 2 rotates, effectively preventing powder leakage while reducing rotational resistance. The sealing ring 6 has an embedded metal skeleton, which not only ensures a reliable connection between the sealing ring 6 and the receiving ring 16, but also provides sufficient elastic compensation to adapt to the thermal expansion and contraction deformation of the powder conveying chamber 2 at different temperatures. The connection between the receiving ring 16 and the powder conveying chamber 2 adopts a double sealing method of interference fit and sealant to ensure that powder does not seep into the sealing kit from the connection.

[0045] The receiving ring 16 is L-shaped, with one end of it having a clearance fit with the inner wall of the annular cover 4. This clearance fit design ensures the stability of the sealing kit installation while providing reasonable compression space for the lip-shaped ribs of the sealing ring 6. When the powder hopper 2 rotates, the vertical surface of the L-shaped receiving ring 16 not only effectively prevents powder from penetrating into the sealing kit but also forms a dynamic pressure balance zone through the small gap with the inner wall of the annular cover 4, further reducing the possibility of powder entering the sealing interface. The clearance between the receiving ring 16 and the inner wall of the annular cover 4 is controlled within the range of 0.2-0.5mm, ensuring smooth rotation of the powder hopper 2 while preventing powder from accumulating on the contact surface and causing abrasive wear. The horizontal surface of the L-shaped receiving ring 16 is used to support the sealing ring 6.

[0046] A powder feeding module is connected to the interface 401. The powder feeding module ensures a stable and appropriate amount of powder entering the powder hopper 2 by precisely controlling the powder feeding rate. This module can flexibly adjust the powder feeding speed according to actual production needs, thereby adapting to the powder filtration requirements of different specifications of wire cores.

[0047] like Figure 12-13 As shown, the powder feeding module includes a conveying cylinder 5, a screw rod 13, and a rotary motor 14. The screw rod 13 is rotatably disposed inside the conveying cylinder 5. The rotary motor 14 is connected to one end of the screw rod 13. The two ends of the conveying cylinder 5 are respectively provided with an inlet 501 and an outlet 502. A collection hopper 15 is installed on the inlet 501, and the outlet 502 is connected to the interface 401.

[0048] In practical use, the centralized hopper 15 can effectively gather and guide the powder into the conveying cylinder 5, avoiding powder spillage that would cause waste and environmental pollution. After the rotary motor 14 starts, it drives the screw rod 13 to rotate inside the conveying cylinder 5. Under the push of the screw rod 13, the powder moves along the conveying cylinder 5 from the inlet 501 to the outlet 502, and is finally stably conveyed through the outlet 502 to the interface 401 of the powder passing bin 2, providing a continuous and uniform powder supply for the entire powder passing process.

[0049] The automatic powder feeding device in this embodiment also includes an automatic control system, which includes a main controller, a linear speed detection unit (preferably a rotary encoder), and a human-machine interface 9. The linear speed detection unit is used to detect the production speed V (moving speed) of the wire in real time. The main controller (preferably a PLC module) receives the speed signal V and calculates the target powder feeding rate Q=M*V based on the preset target powder amount per unit length M (g / m, which can be set through the human-machine interface 9). Then, the main controller sends control commands to the powder feeding module to precisely adjust the rotation speed of the screw rod 13 so that the powder feeding rate matches the wire production speed in real time. This dynamic closed-loop control mechanism not only ensures a constant amount of powder adhering to the surface of the wire per unit length, but also realizes the visualization adjustment and storage function of powder feeding parameters through the human-machine interface 9. When the detected linear speed fluctuation exceeds the set threshold, the system automatically triggers a compensation algorithm to smooth the powder supply curve by adjusting the slope change rate of the screw rod 13 rotation speed, effectively avoiding the problem of uneven powder layer thickness caused by sudden speed changes in traditional powder feeding devices.

[0050] In practical applications, due to the rotation of the powder hopper 2, powder will more or less escape from both ends of the feeding channel 201. In order to prevent powder from escaping to the outside, this embodiment has a turning structure connected to both ends of the feeding channel 201 by connecting pipe 18. By setting the turning structure, the powder can be effectively intercepted and the waste of powder can be reduced.

[0051] like Figure 14-15As shown, the turning structure includes a square tube 7 and a guide bracket 8. One end of the square tube 7 is connected to the connecting pipe 18, and the other end is provided with a detachable cover plate 19. The square tube 7 is provided with an upward-opening guide port 701. The guide bracket 8 is rotatably mounted on the guide port 701 by a fixing knob 17. Guide rollers 801 are respectively provided at both ends of the guide bracket 8.

[0052] Specifically, the rotation angle of the guide bracket 8 on the guide port 701 can be flexibly adjusted by the fixed knob 17 to adapt to the guiding needs of different specifications of wires. The guide roller 801 is made of wear-resistant material and its surface is specially treated to reduce friction with the wire, reduce wire wear, and ensure that the wire runs smoothly during the guiding process without deviation or shaking. The connection between the square tube 7 and the connecting pipe 18 adopts a sealed design to prevent powder from leaking from the connection gap. The cover plate 19 is detachably connected to the other end of the square tube 7 by means of buckles or bolts, which facilitates cleaning and maintenance of the inside of the square tube 7. In addition, the upward-opening guide port 701 can effectively prevent powder from accumulating at the guide port 701 due to gravity during the guiding process, ensuring that the guide bracket 8 can rotate smoothly and perform its guiding function. When the wire passes through the wire feeding channel 201, the guide roller 801 can guide the wire smoothly into the turning structure, while the loose powder is effectively intercepted by the square tube 7. The intercepted powder falls naturally within the square tube 7 under gravity and eventually flows back to the powder hopper 2 through the recovery port at the bottom of the tube 7, thus achieving powder recycling. This design not only reduces powder waste but also prevents powder spillage from polluting the working environment.

[0053] In practical use, the wire follows the guide rollers 801 at both ends of the guide bracket 8, enters the square tube 7 through the upward-opening guide port 701, then travels along the internal space of the square tube 7, and finally exits from the end connected to the connecting pipe 18 into the wire feeding channel 201. This design causes the wire to form a zigzag path before entering the wire feeding channel 201. When the powder escapes from both ends of the wire feeding channel 201, it will hit the inner wall of the square tube 7 and fall into the square tube 7 under the action of gravity, rather than directly diffusing into the external working environment.

[0054] The interior of the square tube 7 is polished, achieving a surface smoothness of Ra0.8 or less. This reduces powder adhesion, facilitating cleaning, and minimizes powder residue on the inner wall of the tube. The removable cover 19 allows operators to periodically open the tube 7 to recycle accumulated powder, check the wear of the guide bracket 8, and replace parts as needed. The locking knob 17 prevents the guide bracket 8 from shifting during use, ensuring the wire remains centered in the wire feeding channel 201. When producing wires of different specifications, simply loosen the locking knob 17 to adjust the angle of the guide bracket 8, matching the spacing of the guide rollers 801 to the wire diameter. This allows for rapid changeover without disassembling and reassembling the entire guide structure. This combination of the bend structure and the wire feeding channel 201 reduces powder emissions by approximately 65% ​​compared to traditional straight-through structures, significantly improving dust concentration in the working environment and reducing powder consumption costs.

[0055] In this embodiment, the end of the connecting pipe 18 is provided with a constriction for connecting to the wire delivery channel 201. The diameter of the connecting pipe 18 is larger than the diameter of the wire delivery channel 201. The larger diameter connecting pipe 18 surrounds the outside of the wire delivery channel 201 to prevent any escaping powder from leaking into the external environment from this junction. The constriction design creates a transition area, allowing powder to be blocked and guided as it escapes from the wire delivery channel 201 to the connecting pipe 18, making it easier for it to fall into the connecting pipe 18 rather than diffuse into the surrounding space. This structure not only enhances the sealing effect but also reduces the frequency of equipment cleaning and maintenance costs caused by powder leakage.

[0056] This invention uses linear speed detection and closed-loop control of the powder feeding module to dynamically adjust the powder feeding amount in real time according to the production line speed, ensuring that the amount of powder obtained by the wire remains constant at any speed. At the same time, by utilizing the continuous rolling collision of elastic particles 1 in the powder hopper 2, the problem of powder uniformity is fundamentally solved.

[0057] Secondly, with the help of a high-precision powder feeding module and a programmable main controller, operators can easily set the required powder layer thickness (i.e., M value) through the human-machine interface 9. The device will automatically execute the set command to achieve precise digital control of the powder quantity, thereby meeting the requirements of different products and different powder feeding processes for wire performance.

[0058] The automatic powder feeding module of this invention automates the entire process from powder supply and application to recycling, which not only reduces labor costs and labor intensity, but also ensures the consistency and stability of production and maintains a clean working environment. Example

[0059] like Figure 16-18As shown, the difference between this embodiment and Embodiment 1 is that the guide plate 3 can also be configured as a V-shaped structure, and along the direction perpendicular to the powder conveying bin 2, the height of the guide plate 3 gradually decreases towards the center from both ends. This V-shaped structure with a gradually narrowing height of the guide plate 3 can more effectively guide the elastic particles 1 and powder to concentrate towards the center of the powder conveying bin 2. During the rotation of the powder conveying bin 2, the elastic particles 1 and powder rise along the guide plate 3. Due to the narrowing height of the guide plate 3, the powder and particles will naturally converge towards the center, further enhancing the uniformity of powder distribution around the wire feeding channel 201. At the same time, the V-shaped guide plate 3 can also provide more stable guidance when the powder rolls down, ensuring full contact between the elastic particles 1 and the wire core, thereby improving the powder conveying effect. In addition, this design simplifies the cleaning work inside the powder conveying bin 2, reduces the possibility of powder residue and accumulation, and improves the overall operating efficiency of the equipment.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. An automatic powder-passing device for wire production, characterized in that, It includes a powder passing bin (2) and a drive motor (11) for rotating the powder passing bin (2). A wire feeding channel (201) is provided through the powder passing bin (2) from left to right. Rollable elastic particles (1) are provided in the powder passing bin (2).

2. The automatic powder-passing device for wire production according to claim 1, characterized in that: The elastic particle (1) consists of a counterweight core (101) and a sponge layer (102) wrapped around the outer surface of the counterweight core (101).

3. The automatic powder-passing device for wire production according to claim 1, characterized in that: The inner wall of the powder passing bin (2) is provided with a plurality of guide plates (3) arranged at intervals along the circumference of the powder passing bin (2).

4. The automatic powder-passing device for wire production according to claim 3, characterized in that: The guide plate (3) is arranged in a V-shape, and the height of the two ends of the guide plate (3) gradually decreases towards the center along the direction perpendicular to the powder hopper (2).

5. The automatic powder-passing device for wire production according to claim 3, characterized in that: Both ends of the powder passing bin (2) are provided with funnels (202), and both ends of the guide plate (3) are connected to the funnels (202) respectively. The middle part of the guide plate (3) is provided with a groove (301).

6. The automatic powder-passing device for wire production according to claim 1, characterized in that: The powder passing chamber (2) has an inlet (203) in the middle, and an annular cover (4) is fitted on the powder passing chamber (2) at the position corresponding to the inlet (203). One end of the annular cover (4) has an interface (401).

7. The automatic powder-passing device for wire production according to claim 6, characterized in that: A powder feeding module is connected to the interface (401); The powder feeding module includes a conveying cylinder (5), a screw rod (13), and a rotary motor (14). The screw rod (13) is rotatably disposed inside the conveying cylinder (5). The rotary motor (14) is connected to one end of the screw rod (13). The two ends of the conveying cylinder (5) are respectively provided with an inlet (501) and an outlet (502). A collection hopper (15) is installed on the inlet (501), and the outlet (502) is connected to the interface (401).

8. The automatic powder-passing device for wire production according to claim 6, characterized in that: The powder-passing chamber (2) comes into contact with the annular cover (4) through a sealing kit; The sealing kit includes a receiving ring (16) and a sealing ring (6). The receiving ring (16) is fixedly disposed on the powder passing chamber (2). The sealing ring (6) is sleeved on the receiving ring (16). The outer surface of the sealing ring (6) is provided with rib protrusions (601) for contacting the annular cover (4).

9. An automatic powder-passing device for wire production according to claim 8, characterized in that: The receiving ring (16) is L-shaped, and one end of the receiving ring (16) is clearance-fitted with the inner wall of the annular cover (4).

10. The automatic powder-passing device for wire production according to claim 1, characterized in that: The two ends of the wire delivery channel (201) are connected by a connecting pipe (18) with a turning structure; The turning structure includes a square tube (7) and a guide bracket (8). One end of the square tube (7) is connected to the connecting pipe (18), and the other end is provided with a detachable cover plate (19). The square tube (7) is provided with an upward-opening guide port (701). The guide bracket (8) is rotatably mounted on the guide port (701) by a fixing knob (17). Guide rollers (801) are respectively provided at both ends of the guide bracket (8).

Images