A feeding device and method for lead extrusion machines

Abstract

This invention relates to the field of cable manufacturing technology, specifically disclosing a feeding device and method for a lead extrusion machine. The device includes a lead melting furnace, with a lead material conveying device, a lifting device, and a discharging device at the furnace's inlet. The lead material conveying device is located below the lifting device, transporting lead raw materials from storage to below it. The lifting device raises the lead raw materials transported by the conveying device to the vicinity of the furnace inlet. The discharging device is placed at the furnace inlet, guiding the lead raw materials transported by the lifting device into the furnace. The lifting device includes a main lifting frame with multiple roller groups. Matching chains are installed between the roller groups. By providing slide rails around the chains that adapt to the running trajectory of the lifting bucket, the lifting device can stably lift the lead raw materials. This effectively replaces manual feeding, allowing the same lifting device to convey lead raw materials of different specifications, reducing labor costs and effectively improving the production efficiency of the lead extrusion machine.

Description

Technical Field

[0001] This invention relates to the field of cable manufacturing technology, specifically to a feeding device and feeding method for lead extrusion machines. Background Technology

[0002] Lead extrusion machines are mainly used for the production of lead sheathing for wires and cables and for cable vulcanization. They involve extruding and cooling molten lead through a series of processes, solidifying the lead sheath onto the cable surface to produce continuous, long-length lead-sheathed armored cables. The first step in using a lead extrusion machine is to melt lead raw materials (such as lead ingots, alloy lead, and lead granules) into liquid using a lead melting furnace. As is well known, lead has a higher density than common metals such as iron and copper; the same volume of lead is much heavier than iron. The feed inlet of the lead melting furnace is often a certain distance from the ground where the raw materials are located. Therefore, feeding the lead raw materials into the lead melting furnace on the lead extrusion machine becomes the first challenge faced by the lead extrusion process. Furthermore, some externally heated lead extrusion furnaces, such as the YQL series, require small pieces of lead ingots or lead granules to be added before starting the furnace empty to ensure contact with the furnace bottom heating device and prevent damage. Ordinary lead ingots or alloy lead can only be added after the lead ingots or lead granules have melted.

[0003] In current production and construction practices, lead raw materials are often manually fed into the lead smelting furnace of the lead extrusion machine, which is time-consuming and labor-intensive. Furthermore, since lead is a heavy metal with significant toxicity, prolonged exposure is detrimental to workers' health. Therefore, a lead feeding device is needed to replace manual feeding. Existing technologies for metal lifting devices generally fall into three categories: The first uses a conveyor belt, but due to the large mass of lead and the varying shapes of different lead raw materials, the angle between the conveyor belt and the horizontal plane can only be controlled within a certain range, resulting in high manufacturing costs and limited operating environments. The second uses a vertically installed conveyor belt with lifting baffles; the metal blocks are lifted by the baffles, but this method can only lift metals with a certain shape, and for heavier lead raw materials, it is very easy for the lead to tip off the conveyor belt at the highest point. The third uses magnetic attraction to transport metal, but conventional lead raw materials are not magnetic, making this method unusable, and this type of equipment is complex and too expensive. Therefore, there is an urgent need for a feeding device and method for lead extrusion machines that is simple in structure, easy to feed, and can effectively replace manual feeding. Summary of the Invention

[0004] The purpose of this invention is to provide a feeding device and feeding method for lead extrusion machines to solve the above-mentioned problems.

[0005] The present invention is achieved through the following technical solution: a feeding device for a lead extrusion machine includes a lead material conveying device, a lifting device, and a discharging device.

[0006] The lead material conveying device is located below the lifting device, transporting the lead raw materials in storage to the area below the lifting device; the lifting device lifts the lead raw materials transported by the lead material conveying device to the vicinity of the lead melting furnace; the unloading device is placed at the lead melting furnace inlet, guiding the lead raw materials transported by the lifting device into the lead melting furnace.

[0007] The lifting device includes a lifting frame with multiple sets of rollers on it. The roller sets are connected by mutually compatible chains, and lifting buckets are evenly arranged on the chains. When the chains rotate, they drive the lifting buckets to lift.

[0008] It should be noted that the lifting bucket in the lifting device rotates around the wheel assembly. The lead material conveying device and the unloading device perform a shoveling action when the lifting bucket passes the lead material conveying device to load the lead raw material. Then, the lead raw material is dumped at the unloading device to achieve automated feeding of lead raw material.

[0009] Preferably, the wheel assembly includes a first wheel shaft disposed at the upper end of the lifting frame and a second wheel shaft disposed at the lower end of the lifting frame; two first sprockets are coaxially disposed at both ends of the first wheel shaft, and two second sprockets are coaxially disposed on the second wheel shaft, and the chain is symmetrically disposed on the first sprockets and the second sprockets.

[0010] Preferably, the lifting bucket is divided into a shoveling end and a feeding end, the mass of the feeding end is less than the mass of the shoveling end, and the two sides of the lifting bucket, located between the shoveling end and the feeding end, are hinged to the chain.

[0011] Preferably, the chain is provided with a slide rail structure around its perimeter, and the lifting bucket is provided with rollers adapted to the slide rail; when the lifting bucket moves with the chain, the rollers move along the slide rail, so that the lifting bucket cannot deflect around the hinge point with the chain; a feed stop is provided at the feed inlet and on the inner side of the chain, the feed stop restricting the movement of the scooping end of the lifting bucket, so that the lifting bucket tilts towards the feeding end.

[0012] It should be noted that some lead melting furnaces only require a continuous supply of lead ingots or alloy lead to ensure continuous operation. Conventional lead ingots and alloy lead are regularly shaped cuboids or cylinders, facilitating transport. However, for certain lead melting furnaces (such as YQL-type lead extrusion equipment), smaller lead ingot segments or lead granules need to be added during empty furnace startup to ensure good contact between the raw material and the furnace bottom, preventing overheating deformation of the furnace bottom and side plates, which could lead to weld cracking or damage to the heaters. This application designs the lead raw material lifting component as a bucket-type lifting structure, ensuring the equipment can load raw materials of different shapes and sizes, such as lead granules, cylindrical lead ingots, and cuboid alloy lead. Furthermore, the lifting bucket is driven by a chain, and with the limit of the slide rail, the angle of the lifting bucket will not deviate during the lifting and transporting process after loading the raw material, effectively improving the stability of the lifting bucket during transport and ensuring that the raw material does not tip over or spill.

[0013] Preferably, the lifting frame has a triangular structure, and the lifting frame includes a first column and a second column, which are hinged at the first rotating wheel assembly. An arc-shaped horizontal column is provided on the first column, which passes through the second column. The second column can slide around the hinge point with the first column on the horizontal column. A slider is sleeved on the horizontal column, and the second rotating wheel assembly is fixedly mounted on the slider.

[0014] Preferably, the crossbar has a toothed shape above it, and the slider has a motor gear that matches the toothed shape on the crossbar.

[0015] Preferably, the first column and the second column are telescopic rod structures, and pulleys are provided at the bottom of the first column and the second column.

[0016] It should be noted that by adjusting the height of the first and second columns, the overall loading height can be controlled. By adjusting the position of the slider on the horizontal column, the overall loading angle can also be adjusted, thus adapting to lead melting furnaces at different heights.

[0017] Preferably, the feeding device includes a cylindrical feeding bin, which has multiple rotating baffles that rotate along the central axis of the feeding bin.

[0018] It should be noted that in existing production processes, the furnace opening cover needs to be opened each time material is added to the lead melting furnace, and then manually closed after feeding. However, this application features a cylindrical feeding hopper device with a rotating baffle. When the lifting device pours raw materials into the feeding device, the rotating baffle can buffer the raw materials to a certain extent, preventing the lead ingots from causing large fluctuations in the liquid level of the lead melting furnace. At the same time, the rotating baffle, in conjunction with the cylindrical feeding hopper, ensures that the furnace opening is always isolated from the outside environment, effectively preventing lead from splashing out and causing waste and danger.

[0019] Preferably, the lead material conveying device is provided with baffles on both sides, and the lead material conveying device is provided with arc grooves adapted to the lifting bucket according to the movement path of the lifting bucket.

[0020] A feeding method for a lead extrusion machine, based on a feeding device for a lead extrusion machine, is characterized by comprising the following steps:

[0021] S1. When feeding for the first time, start the lead material conveying device to convey an appropriate amount of lead particles or lead ingot segments into the arc groove of the lead material conveyor belt. At the same time, start the lifting device to make the wheel set of the lifting device rotate.

[0022] S2. The lifting bucket on the lifting device rotates around the wheel assembly as the chain moves, scooping up the lead particles or lead ingot segments in the arc groove and lifting them upwards; after reaching the feeding point, the lifting bucket is limited by the material blocking block, and the lead material is poured into the unloading device; after the lifting bucket unloads the material, it continues to scoop material in a cycle.

[0023] After transporting a suitable amount of S3 lead granules and lead ingots, the lead material conveying device is switched to conveying large lead ingots or alloy lead.

[0024] S4. The lifting bucket on the lifting device continues to rotate around the wheel assembly as the chain moves, scooping up the lead ingots or alloy lead in the arc groove, lifting them upwards, and dumping them at the unloading device.

[0025] It should be noted that, based on the above method, the feeding equipment for lead extrusion machines proposed in this application can effectively replace manual feeding. Different specifications of lead raw materials can be transported using the same lifting device, reducing labor costs and effectively improving the production efficiency of lead extrusion machines.

[0026] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0027] 1. This invention, by setting up a chain conveyor and combining it with a lifting bucket structure, enables the same equipment to feed lead raw materials of different specifications and shapes, replacing the traditional manual feeding, reducing labor costs, and effectively improving the production efficiency of the lead extrusion machine.

[0028] 2. Compared with traditional conveyor belt conveying devices, the present invention has a simple structure. The vertically set lifting device is easy to install, transport and disassemble, and can also adapt well to different production conditions and lift lead raw materials of different specifications.

[0029] 3. The present invention is additionally provided with a feeding device, which is equipped with a cylindrical feeding bin with a rotating baffle. When the lifting device pours the raw material into the bin, the rotating baffle can buffer the raw material to a certain extent, so as to avoid large fluctuations in the liquid surface of the lead melting furnace caused by the input lead ingots. At the same time, the rotating baffle ensures that the furnace opening of the lead melting furnace is isolated from the outside world at all times, effectively preventing lead liquid from splashing out and causing waste and danger. Attached Figure Description

[0030] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0031] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0032] Figure 2 This is a side view of the present invention;

[0033] Figure 3 This is a side sectional view of the present invention;

[0034] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0035] Figure 5 This is a side view of another embodiment of the present invention;

[0036] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle;

[0037] Figure 7 This is a schematic diagram (a) of the bucket lifting mechanism of the present invention;

[0038] Figure 8 This is a schematic diagram (II) of the lifting bucket of the present invention;

[0039] Figure 9 This is a schematic diagram of the method flow of the present invention.

[0040] In the above figures, the component names corresponding to the reference numerals are as follows:

[0041] 1. Lead melting furnace; 2. Lead material conveying device; 21. Arc trough; 22. Baffle; 3. Lifting device; 31. Lifting frame; 311. Lifting main frame; 312. First column; 313. Second column; 314. Horizontal column; 315. Sliding block; 32. Chain; 33. Lifting bucket; 331. Shoveling end; 332. Feeding end; 34. First rotary shaft; 341. First sprocket; 35. Second rotary shaft; 351. Second sprocket; 36. Slide rail; 361. Shoveling end slide rail; 362. Feeding end slide rail; 363. Roller; 364. Feeding stop block; 365. Adjusting track; 366. Bucket frame; 37. Third rotary shaft; 371. Third sprocket; 372. Fourth sprocket; 4. Discharge device; 41. Discharge bin; 42. Rotating baffle. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0043] Example 1

[0044] like Figures 1 to 4 As shown, this embodiment provides a feeding device for a lead extrusion machine, including a lead melting furnace 1. The lead melting furnace 1 is equipped with a lead material conveying device 2, a lifting device 3 and a discharging device 4 at its inlet.

[0045] The lead material conveying device 2 is located below the lifting device 3, and transports the lead raw materials in the warehouse to the area below the lifting device 3; the lifting device 3 lifts the lead raw materials transported by the lead material conveying device 2 to the vicinity of the lead melting furnace 1; the unloading device 4 is placed at the entrance of the lead melting furnace 1, and guides the lead raw materials transported by the lifting device 3 into the lead melting furnace 1.

[0046] The lifting device 3 includes a lifting frame 31, on which multiple roller groups are arranged. The lifting main frame 311 supports the roller groups. Interlocking chains 32 are arranged between the roller groups. Lifting buckets 33 are evenly arranged on the chains 32. When the chains 32 rotate, they drive the lifting buckets 33 to lift.

[0047] Furthermore, the wheel assembly includes a first wheel shaft 34 disposed at the upper end of the lifting frame 31 and a second wheel shaft 35 disposed at the lower end of the lifting frame 31; the first wheel shaft 34 has two first sprockets 341 coaxially disposed at both ends, the second wheel shaft 35 has two second sprockets 351 coaxially disposed, and the chain 32 is symmetrically disposed on the first sprockets 341 and the second sprockets 351.

[0048] Specifically, the lifting bucket 33 has a certain groove space that can accommodate lead raw materials of different shapes; at the same time, the lifting bucket 33 is set on two chains 32, with the first sprocket 341 placed above the second sprocket 351, and a rotating motor is set on the first sprocket shaft 34 and / or the second sprocket 351 shaft. The two sprockets rotate at the same speed, so that the lifting bucket 33 follows the chain 32 to rotate around the first sprocket shaft 34 and the second sprocket shaft 35.

[0049] Furthermore, in order to better load and unload lead materials, such as Figure 7As shown, the lifting bucket 33 is preferably divided into a shoveling end 331 and a feeding end 332. Both the shoveling end 331 and the feeding end 332 are provided with baffles to prevent raw materials from spilling. The mass and length of the feeding end 332 are less than the mass of the shoveling end 331. The two sides of the lifting bucket 33, located between the shoveling end 331 and the feeding end 332, are hinged to the chain 32, so that the lifting bucket 33 will tend to tilt towards the shoveling end 331 when it is not subjected to external force.

[0050] Furthermore, the chain 32 is provided with a slide rail 36 structure around it, and the lifting bucket 33 is provided with a roller 363 adapted to the slide rail 36; when the lifting bucket 33 moves with the chain 32, the roller 363 moves along the slide rail 36, so that the lifting bucket 33 cannot deflect around the hinge point with the chain 32.

[0051] Specifically, such as Figure 7 As shown, rollers 363 are provided on both the feeding end 332 and the shoveling end 331 of the lifting bucket 33. Shoveling end slide rails 361 and feeding end slide rails 362 are set around the chain 32. According to the running trajectory of the lifting bucket 33, shoveling end slide rails 361 and feeding end slide rails 362 are set during the lifting stage of the bucket, so that when the lifting bucket 33 is loaded with material, at least one slide rail 36 restricts the tilt of the lifting bucket 33, further ensuring the stability of the lifting bucket 33 during lifting.

[0052] Meanwhile, a feed stop 364 is provided at the feed inlet of the lead melting furnace 1 and inside the chain 32. The feed stop 364 restricts the movement of the shovel end 331 of the lifting bucket 33, causing the lifting bucket 33 to tilt toward the feeding end 332.

[0053] Specifically, when the lifting bucket 33 is loaded with raw materials and reaches the furnace mouth of the lead melting furnace 1, the shoveling end 331 of the lifting bucket 33 touches the feed stop 364. As the chain 32 moves downward, the lifting bucket 33 tilts towards the feeding end 332. Preferably, the feed stop 364 is set as a vertically connected roller 363, so that the lifting bucket 33 maintains the tilting action for a certain period of time.

[0054] After the lifting bucket 33 dumps the raw material and disengages from the feed stop 364, without setting a slide rail 36 to restrict the lifting bucket 33, since the weight of the shoveling end 331 is greater than that of the feeding end 332, the lifting bucket 33 naturally tilts towards the shoveling end 331 to return to its original position. When the lifting bucket 33 reaches the position of the lead pellet conveying device, the roller 363 of the feeding end 332 enters the feeding end slide rail 362 and deflects under the restriction of the feeding end slide rail 362, generating a shoveling action.

[0055] Furthermore, the lifting frame 31 includes a main lifting frame 311, which supports the first rotating wheel shaft 34. The main lifting frame 311 has a triangular structure and includes a first column 312 and a second column 313. The first column 312 and the second column 313 are hinged at the first rotating wheel assembly. An arc-shaped horizontal column 314 is provided on the first column 312. The horizontal column 314 passes through the second column 313, and the second column 313 can slide around the hinge point with the first column 312 on the horizontal column 314. A horizontal slider 315 is sleeved on the horizontal column 314, and the second rotating wheel assembly is fixedly mounted on the horizontal slider 315.

[0056] Specifically, the verticality of the chain 32 can be adjusted by adjusting the position of the second column 313 and the second wheel assembly on the horizontal column 314, and the height can also be finely adjusted. When the chain 32 is adjusted too tilted, to ensure that the lifting bucket 33 does not leak material during operation, the lifting bucket 33 preferably uses... Figure 8 The structure shown features bucket frames 366 on both sides of the lifting bucket 33, matching its shape. The bucket frames 366 are hinged to the chain 32 and have rollers 363 corresponding to the slide rail 36. The scooping end 331 of the lifting bucket 33 is hinged to the bucket frame 366, and the feeding end 332 extends from the pulley and slides on the adjusting rail 365 on the bucket frame 366. By adjusting the position of the feeding end 332 on the adjusting rail 36, the lifting bucket 33 can tilt relative to the lifting frame, thus counteracting the tilt of the chain 32 and ensuring that the raw material in the lifting device 3 does not tip over.

[0057] Furthermore, in order to achieve automatic adjustment, a rack is provided above the horizontal column 314, and a gear and a motor are fixed on the horizontal slider 315 that are adapted to the tooth profile of the rack on the horizontal column 314. When the motor rotates, it drives the horizontal slider 315 to move on the horizontal column 314.

[0058] Furthermore, the first column 312 and the second column 313 are telescopic rod structures. The bottom of the first column 312 and the second column 313 are provided with pulleys. Both the pulleys and the telescopic rods have self-locking structures, which can adjust the height of the device according to the actual situation and facilitate movement and transportation.

[0059] Furthermore, the feeding device 4 includes a cylindrical feeding bin 41, which is provided with a plurality of rotating baffles 42, which rotate along the central axis of the feeding bin 41.

[0060] Specifically, the feeding bin 41 is installed at the furnace opening of the lead melting furnace 1, and is equipped with rotating baffles 42 adapted to the size of the furnace opening. Multiple rotating baffles 42 are arranged around the axis of the cylindrical feeding bin 41 to ensure that there are always two rotating baffles 42 that can block the furnace opening of the lead melting furnace 1. A motor connected to the rotating baffles 42 is installed outside the outer shell of the feeding bin 41. The motor speed is adapted to the speed of the first rotating wheel shaft 34, but in the opposite direction. The raw material at the tip of the lifting bucket 33 enters the feeding bin 41, is blocked by one of the rotating baffles 42 for buffering, and is then pushed into the lead melting furnace 1 by the subsequent rotating baffles 42.

[0061] Furthermore, baffles 22 are provided on both sides of the lead material conveying device 2, and the lead material conveying device 2 is provided with arc grooves 21 that are adapted to the lifting bucket 33 according to the movement path of the lifting bucket 33.

[0062] Specifically, the lead material conveying device 2 conveys lead raw materials to the arc trough 21, where they are scooped up by the lifting bucket 33 for loading. A height limiting device can be set in front of the feed inlet of the lead material conveying device 2 to prevent the raw material from being conveyed too much and causing it to spill out of the arc trough 21.

[0063] Example 2

[0064] The above embodiment 1 is generally applicable to the case where the furnace opening of lead melting furnace 1 is on the side. For the case where the furnace opening of lead melting furnace 1 is located at the top, the following scheme is preferred.

[0065] like Figures 5 to 6 As shown, based on Embodiment 1, a third rotating shaft 37 is set horizontally to the first rotating shaft 34. A third sprocket 371 is coaxially arranged on the third rotating shaft 37. The rotational speed of the third sprocket 371 is the same as that of the first sprocket 341, so that the chain 32 passes around the third rotating shaft 37 to form an inverted "L" shape structure, so that the running trajectory of the lifting bucket 33 passes above the entrance of the lead melting furnace 1.

[0066] Specifically, after the lifting bucket 33 is loaded with raw material and passes through the first sprocket 341, it is limited by the shoveling end slide rail 361 and moves smoothly toward the furnace mouth of the lead melting machine. When the lifting bucket 33 passes around the third sprocket 371, the feeding end slide rail 362 limits the lifting bucket 33. When the lifting bucket 33 is loaded with raw material and reaches directly above the furnace mouth of the lead melting furnace 1, the shoveling end 331 of the lifting bucket 33 touches the feed stop block 364 at the same time, the lifting bucket 33 disengages from the limit of the slide rail 36. As the chain 32 returns, the lifting bucket 33 tilts toward the feeding end 332. Preferably, the feed stop block 364 is set as a horizontally connected roller 363 so that the lifting bucket 33 maintains the tilting action for a certain period of time.

[0067] After the lifting bucket 33 dumps the raw material and disengages from the feed stop 364, since the weight of the shoveling end 331 is greater than that of the feeding end 332, the lifting bucket 33 naturally tilts towards the shoveling end 331. Then, following the chain 32, it passes around the fourth sprocket 372, which does not have a central shaft. When the lifting bucket 33 reaches the position of the lead pellet conveying device, the roller 363 of the feeding end 332 enters the feeding end slide rail 362 and deflects under the restriction of the feeding end slide rail 362, thus generating a shoveling action.

[0068] Furthermore, the feeding hopper 41 is located at the furnace opening of the lead melting furnace 1, and a rotating baffle 42 adapted to the size of the furnace opening is provided. Multiple rotating baffles 42 are arranged around the axis of the cylindrical feeding hopper 41 to ensure that there are always two rotating baffles 42 that can block the furnace opening of the lead melting furnace 1. A motor connected to the rotating baffle 42 is installed outside the outer shell of the feeding hopper 41, and the motor speed is adapted to the speed of the first rotary shaft 34. The raw material at the tip of the lifting bucket 33 enters the feeding hopper 41, is blocked by one of the rotating baffles 42 to achieve buffering, and is fed into the lead melting furnace 1 as the rotating baffle 42 rotates.

[0069] Example 3

[0070] like Figure 9 As shown, based on Embodiments 1 and 2, a feeding method for a lead extrusion machine is proposed, based on a feeding device for a lead extrusion machine, including the following steps:

[0071] S1. When feeding for the first time, start the lead material conveying device 2 to convey an appropriate amount of lead particles or lead ingot segments into the arc groove 21 of the lead material conveying belt. At the same time, start the lifting device 3 to make the wheel group of the lifting device 3 rotate.

[0072] S2. The lifting bucket 33 on the lifting device 3 rotates around the wheel assembly as the chain 32 moves, scooping up the lead particles or lead ingot segments in the arc groove 21 and lifting them upwards; after reaching the feeding point, the lifting bucket 33 is limited by the material blocking block, and the lead material is poured into the unloading device 4; after the lifting bucket 33 unloads the material, it continues to scoop material in a cycle.

[0073] After transporting a suitable amount of lead granules and lead ingots, the lead material conveying device 2 is switched to transport large lead ingots or alloy lead.

[0074] S4. The lifting bucket 33 on the lifting device 3 continues to rotate around the wheel assembly as the chain 32 moves, scooping up the lead ingots or alloy lead in the arc groove 21, lifting them upwards, and dumping them at the unloading device 4.

[0075] Based on the above method, the feeding equipment for lead extrusion machines proposed in this application can effectively replace manual feeding. Different specifications of lead raw materials can be transported using the same lifting device, reducing labor costs and effectively improving the production efficiency of lead extrusion machines.

[0076] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A feeding device for a lead extrusion machine, comprising a lead melting furnace (1), characterized in that: The lead melting furnace (1) is equipped with a lead material conveying device (2), a lifting device (3) and a feeding device (4) at the inlet. The lead material conveying device (2) is located below the lifting device (3) and transports the lead raw materials in the warehouse to the area below the lifting device (3); the lifting device (3) lifts the lead raw materials transported by the lead material conveying device (2) to the vicinity of the lead melting furnace (1); the unloading device (4) is placed at the furnace mouth of the lead melting furnace (1) and guides the lead raw materials transported by the lifting device (3) into the lead melting furnace (1); The lifting device (3) includes a lifting frame (31), on which multiple wheel sets are provided, and mutually compatible chains (32) are provided between the wheel sets. Lifting buckets (33) are evenly arranged on the chains (32). When the chains (32) rotate, they drive the lifting buckets (33) to lift. The wheel assembly includes a first wheel shaft (34) disposed at the upper end of the lifting frame (31) and a second wheel shaft (35) disposed at the lower end of the lifting frame (31); the first wheel shaft (34) has two first sprockets (341) coaxially disposed at both ends, and the second wheel shaft (35) has two second sprockets (351) coaxially disposed at both ends; the chain (32) is symmetrically disposed on the first sprockets (341) and the second sprockets (351). The lifting bucket (33) is divided into a shoveling end (331) and a feeding end (332). The mass of the feeding end (332) is less than the mass of the shoveling end (331). The two sides of the lifting bucket (33), located between the shoveling end (331) and the feeding end (332), are hinged to the chain (32). The chain (32) is provided with a slide rail (36) structure around it, and the lifting bucket (33) is provided with a roller (363) adapted to the slide rail (36); when the lifting bucket (33) moves with the chain (32), the roller (363) moves along the slide rail (36), so that the lifting bucket (33) cannot deflect around the hinge point with the chain (32); at the feed port of the lead melting furnace (1) and inside the chain (32) a feed stop (364) is provided, the feed stop (364) restricts the movement of the shoveling end (331) of the lifting bucket (33), so that the lifting bucket (33) tilts towards the feeding end (332).

2. The feeding device for a lead extrusion machine according to claim 1, characterized in that: The lifting frame (31) includes a main lifting frame (311), which supports a first rotating shaft (34). The main lifting frame (311) is a triangular structure. The lifting frame (31) includes a first column (312) and a second column (313). The first column (312) and the second column (313) are hinged at the first rotating shaft (34). An arc-shaped horizontal column (314) is provided on the first column (312). The horizontal column (314) passes through the second column (313). The second column (313) can slide around the hinge point with the first column (312) on the horizontal column (314). A slider (315) is sleeved on the horizontal column (314). The second rotating shaft (35) is fixedly installed on the slider (315).

3. The feeding device for a lead extrusion machine according to claim 2, characterized in that: A rack is provided above the horizontal column (314), and a motor gear is provided on the slider (315) that matches the tooth profile of the rack on the horizontal column (314).

4. A feeding device for a lead extrusion machine according to claim 2, characterized in that: The first column (312) and the second column (313) are telescopic rod structures, and pulleys are provided at the bottom of the first column (312) and the second column (313).

5. A feeding device for a lead extrusion machine according to claim 1, characterized in that: The feeding device (4) includes a cylindrical feeding bin (41) with multiple rotating baffles (42) in the feeding bin (41) and the rotating baffles (42) rotating along the central axis of the feeding bin (41).

6. A feeding device for a lead extrusion machine according to claim 1, characterized in that: The lead material conveying device (2) is provided with baffles (22) on both sides, and the lead material conveying device (2) is provided with an arc groove (21) adapted to the lifting bucket (33) according to the movement path of the lifting bucket (33).

7. A feeding method for a lead extrusion machine, based on the feeding equipment for a lead extrusion machine according to any one of claims 1-6, characterized in that, Includes the following steps: S1. When feeding for the first time, start the lead material conveying device (2) to convey an appropriate amount of lead particles or lead ingot segments into the arc groove (21) of the lead material conveying belt, and at the same time start the lifting device (3) to make the wheel group of the lifting device (3) rotate. S2. The lifting bucket (33) on the lifting device (3) rotates around the wheel assembly as the chain (32) moves, scooping up the lead particles or lead ingot segments in the arc groove (21) and lifting them upwards; after reaching the feeding point, the lifting bucket (33) is limited by the feeding block and pours the lead material into the unloading device (4); after the lifting bucket (33) unloads the material, it continues to scoop the material in a cycle; After transporting a suitable amount of lead pellets and lead ingots, the lead material conveying device (2) is switched to conveying large lead ingots or alloy lead. S4. The lifting bucket (33) on the lifting device (3) continues to rotate around the wheel assembly as the chain (32) moves, scooping up the lead ingots or alloy lead in the arc groove (21), lifting them upwards, and dumping them at the unloading device (4).

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