Secondary wire drawing equipment

Abstract

The invention relates to the field of part surface processing equipment, and discloses secondary wire drawing equipment, a series cleaning machine and a series wire drawing group comprising at least two wire drawing machines, workpieces are firstly subjected to impurity removal through the cleaning machine, the wire drawing quality is guaranteed from the source, the texture uniformity is improved through secondary wire drawing, the wire drawing machines are provided with lifting parts, the distance between grinding rollers and a conveying belt can be adjusted, and different workpieces can be adapted; the horizontal reciprocating assembly drives the grinding roller to move horizontally, and the problems that lines are uneven, the grinding roller is prone to damage and flatness of workpieces is poor are solved. The pressing assembly prevents the workpiece from shifting, the spraying assembly assists in cleaning and cooling, and the machining standard of automobile sheet metal parts is met.

Description

Technical Field

[0001] This invention relates to the field of surface processing equipment for parts, and more specifically to a secondary wire drawing device. Background Technology

[0002] When performing wire drawing on automotive sheet metal parts, grinding roller type wire drawing equipment is often used to improve the appearance and surface performance of the parts. During the process, the grinding roller rotates and contacts the surface of the automotive sheet metal parts. The grinding media on the surface of the grinding roller grinds the surface of the workpiece to form a wire-like texture, which meets the basic process requirements for surface treatment of automotive parts.

[0003] In existing technologies, when processing automotive sheet metal parts, the grinding range of the grinding roller is limited by its own rotation trajectory, resulting in a fixed contact area with the sheet metal part. Since automotive sheet metal parts often have a large surface area, this easily leads to uneven distribution of the brushed texture on the workpiece surface, poor consistency between large areas and edge areas, and even localized missing or excessively deep textures, failing to meet the standard for uniform surface texture in automotive parts. Furthermore, the long-term concentration of contact stress between the grinding roller and the workpiece in a fixed area not only causes excessive wear on the grinding roller, shortening its lifespan and increasing equipment maintenance costs, but also results in uneven stress on the surface of the automotive sheet metal part, causing localized over-grinding depressions or under-grinding protrusions, affecting the surface flatness of the workpiece. This, in turn, adversely affects subsequent assembly, painting, and other processes, reducing the overall product quality. Summary of the Invention

[0004] The present invention aims to provide a secondary wire drawing device to solve the problem in the wire drawing process of automotive sheet metal parts where the grinding roller only rotates, resulting in a fixed contact area, causing uneven texture, easy damage to the grinding roller, and workpiece flatness defects, which also affect subsequent processes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a secondary wire drawing device, comprising a cleaning machine and a series wire drawing group, wherein the cleaning machine and the series wire drawing group are connected in series, and the workpiece passes through the cleaning machine and the series wire drawing group in sequence. The cleaning machine is used to remove impurities from the workpiece, and the series wire drawing group is used to draw the surface of the workpiece to form a uniform filamentous texture. The series wire drawing group includes at least two wire drawing machines connected in series. The wire drawing machine includes a frame, a conveyor belt is provided on the frame, a lifting part is vertically slidably provided on the frame, a grinding roller is provided on the lifting part, the grinding roller spans the frame and is located above the conveyor belt, the lifting part is used to adjust the distance between the grinding roller and the conveyor belt, a horizontal reciprocating component is provided on the lifting part, the horizontal reciprocating component is used to drive the grinding roller to move horizontally above the conveyor belt; a pressing component and a spraying component are also provided on the frame above the conveyor belt, the pressing component is used to press the workpiece onto the conveyor belt.

[0006] The beneficial effects of this solution are as follows: The horizontal reciprocating component drives the grinding roller to move horizontally and reciprocally above the conveyor belt, breaking the limitation of the fixed contact area caused by the rotation of the traditional grinding roller, effectively expanding the grinding range, and solving the problems of uneven distribution of wire drawing patterns on the workpiece surface and missing or excessively deep patterns in the edge areas in the existing technology. At the same time, it avoids excessive wear of the grinding roller in some areas, extends its service life, and prevents the workpiece from denting or protruding due to uneven force, ensuring surface flatness and meeting the stringent standards of automotive parts for surface texture and processing accuracy; The pressing component can stably press the workpiece onto the conveyor belt to prevent the workpiece from shifting during the wire drawing process, further ensuring processing consistency; The spraying component can assist in cleaning and cooling, improving processing quality.

[0007] The workpiece is first cleaned to remove surface oil, iron filings, oxide scale and other impurities, so as to avoid impurities interfering with the contact between the grinding material and the metal surface during the wire drawing process, thus ensuring the quality of wire drawing from the source. The tandem wire drawing group uses at least two wire drawing machines connected in series to realize secondary wire drawing processing of automotive sheet metal parts, improving the uniformity and consistency of the texture. The wire drawing machine is equipped with a lifting part, which can flexibly adjust the distance between the grinding roller and the conveyor belt to adapt to the processing needs of sheet metal parts of different thicknesses and shapes.

[0008] Preferably, as an improvement, the lifting unit includes a first sliding frame symmetrically slidably disposed on both sides of the frame; the horizontal reciprocating assembly includes a second sliding frame horizontally slidably disposed on both sides of the first sliding frame, and the grinding roller is rotatably disposed between the two second sliding frames; a first motor is mounted on the first sliding frame, the output shaft of the first motor is vertically disposed, a drive shaft is vertically fixed on the second sliding frame, a connecting rod is hinged between the drive shaft and the output shaft, and the connecting rod is rotatably connected to the output shaft through an eccentric bearing.

[0009] The beneficial effects are as follows: by using the first motor drive, the connecting rod and the output shaft are connected by an eccentric bearing, and the connecting rod is hinged to the drive shaft, the rotational motion of the motor is converted into the horizontal reciprocating motion of the second sliding frame, thereby driving the grinding roller to achieve horizontal reciprocating movement.

[0010] Preferably, as an improvement, the output shaft has a mounting groove, an eccentric block is fixed in the mounting groove, an eccentric column is vertically fixed to the eccentric block, and an eccentric bearing is sleeved on the eccentric column.

[0011] The beneficial effects are as follows: by opening an installation groove in the output shaft, fixing an eccentric block in the groove and setting an eccentric column, and fitting an eccentric bearing onto the eccentric column, the eccentric effect of the eccentric column and the eccentric bearing is superimposed, which can enhance the reciprocating movement effect of the grinding roller. By replacing the eccentric block with different eccentric distances, the stroke of the horizontal reciprocating motion of the grinding roller can be flexibly adjusted to adapt to the processing needs of sheet metal parts of different sizes and improve the versatility of the equipment.

[0012] Preferably, as an improvement, the lifting unit further includes a first slide rail symmetrically fixed on both sides of the frame, and the first slide frame is provided with a first slider, which is engaged with the first slide rail.

[0013] Preferably, as an improvement, a lead screw is rotatably provided at the bottom end of the first sliding frame, and a drive assembly is provided at the bottom end of the frame, with the lead screw and the drive assembly being threadedly connected.

[0014] Preferably, as an improvement, the horizontal reciprocating assembly further includes a second slide rail disposed on the first sliding frame, the second sliding frame being provided with a second slider, the second slider being engaged with the second slide rail.

[0015] Preferably, as an improvement, the spray assembly includes a plurality of spray pipes spaced apart on the frame, a guide trough and a water collection tank on the frame, the spray pipes being spaced apart from the grinding rollers and located above the conveyor belt, the guide trough being located below the conveyor belt, the water collection tank being located below the guide trough, and the water collection tank being equipped with a water pump, the water pump being connected to the plurality of spray pipes through pipelines.

[0016] The beneficial effects are as follows: the water pump in the water collection tank is connected to the spray pipe through the pipeline, realizing the recycling of spray water, effectively saving water resources and reducing processing costs; the spray pipe is located above the conveyor belt and is spaced apart from the grinding roller, which can cool and clean the grinding roller and workpiece during the wire drawing process; the guide groove and water collection tank can effectively collect wastewater and impurities, keep the processing environment clean, and avoid impurities remaining and affecting subsequent processing.

[0017] Preferably, as an improvement, the pressing assembly includes pressing plates fixed to both sides of the frame, pressing rods vertically slidably disposed on the pressing plates, pressing rollers rotatably disposed between the pressing rods on both sides, and springs disposed between the pressing rods and the pressing plates.

[0018] The beneficial effects are as follows: by using the elastic force of the spring to press the pressure roller against the workpiece, the adaptive pressing and positioning of the workpiece can be achieved. This can ensure that the workpiece does not shift during the wire drawing process, and can also adapt to the processing requirements of workpieces of different thicknesses. No additional adjustment of the pressing structure is required, thus improving processing efficiency. At the same time, it avoids damage to the workpiece surface caused by rigid pressing.

[0019] Preferably, as an improvement, a water tank for etching workpieces is connected to the inlet of the cleaning machine, and a filter box is provided on one side of the water tank, with the water tank and the filter box connected by a pipe. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the device in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the overall structure of the wire drawing machine according to Embodiment 1 of the present invention; Figure 3 for Figure 2A partial structural diagram of the lifting section at point A; Figure 4 The wire drawing machine of Embodiment 1 of the present invention is different. Figure 3 A schematic diagram of the overall structure on one side; Figure 5 for Figure 4 Schematic diagram of a partial structure of the lifting section at point B; Figure 6 This is a schematic diagram of the internal structure of the wire drawing machine according to Embodiment 1 of the present invention; Figure 7 for Figure 6 Enlarged schematic diagram of a portion of the pressing component at point C; Figure 8 This is a top view of the first sliding frame in Embodiment 1 of the present invention; Figure 9 This is a schematic diagram of the connection structure between the output shaft and the eccentric shaft in Embodiment 1 of the present invention; Figure 10 This is a schematic diagram of the structure of the water tank and filter box in Embodiment 2 of the invention; Figure 11 This is a schematic diagram of the stainless steel plate in Embodiment 2 of the present invention. Detailed Implementation

[0021] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: 1. Cleaning machine; 2. Wire drawing machine; 21. Frame; 211. Conveyor belt; 22. Lifting unit; 221. First sliding frame; 2211. Lead screw; 2211. First slide rail; 222. Horizontal reciprocating assembly; 23. Second sliding frame; 2311. Second slider; 2311. Drive shaft; 2312. Second slide rail; 232. Grinding roller; 24. Spray assembly; 25. Spray pipe; 251. Guide channel; 252. Water collection tank; 253. Water pump; 2531. Pressing assembly; 26. Pressing plate; 261. Pressing rod; 262. 2621, pressing roller, 263, first motor, 27, output shaft, 271, mounting groove, 2711, eccentric block, 2712, eccentric column, 2713, connecting rod, 28, eccentric bearing, 281, drive assembly, 29, nut, 291, rotating motor, 292, rotating handle, 293, water tank, 3, heating tube, 31, stainless steel plate, 32, hook, 321, arc-shaped blocking plate, 322, filter box, 33, partition, 331, filter screen, 3311, water inlet pipe, 34, water outlet pipe, 35, spray pipe, 36, mounting ring, 37.

[0022] Example 1 The basic implementation examples are as follows: Figures 1-9 As shown, Figures 1-5The secondary wire drawing equipment shown includes a cleaning machine 1 and a series wire drawing group. The cleaning machine 1 and the series wire drawing group are connected in series. The workpiece passes through the cleaning machine 1 and the series wire drawing group in sequence. The cleaning machine 1 is used to remove impurities from the workpiece, and the series wire drawing group is used to draw the surface of the workpiece to form a uniform filamentous texture. The series wire drawing group is set as two wire drawing machines 2 connected in series. The wire drawing machine 2 includes a frame 21, on which a conveyor belt 211 is provided. Conveyor rollers are rotatably arranged at the front and rear ends of the frame 21. A conveyor motor is installed on the frame 21, and the conveyor motor is coaxially connected to the conveyor rollers. Lifting parts 22 are vertically slidably arranged on both sides of the frame 21. The lifting parts 22 include a first sliding frame 221 symmetrically slidably arranged on both sides of the frame 21 and a first slide rail 222 symmetrically fixed on both sides of the frame 21. The first sliding frame 221 is provided with a first slide rail. The first slider is engaged with the first slide rail 222. There are several first sliding frames 221 and the first slide rail 222, and they correspond to each other. The bottom end of the first sliding frame 221 is rotatably provided with a lead screw 2211. The bottom end of the frame 21 is provided with a drive assembly 29. The lead screw 2211 is threadedly connected to the drive assembly 29. The drive assembly 29 is a worm gear assembly. The axis of the worm gear is vertically set and coaxial with the lead screw 2211. The worm gear is coaxially fixed with a nut 291. The lead screw 2211 is threadedly connected to the nut 291. The worms of the worm gear assemblies on both sides of the frame 21 are driven by a rotating motor 292 and a rotating handle 293, respectively. The rotating motor 292 drives the first sliding frame 221 to move a large distance in the vertical direction, and the rotating handle 293 drives the first sliding frame 221 to adjust a small distance in the vertical direction.

[0023] like Figure 3 , Figure 5 , Figures 8-9As shown, horizontal reciprocating assemblies 23 are symmetrically arranged above the first sliding frames 221 on both sides of the frame 21. Each horizontal reciprocating assembly 23 includes a second sliding frame 231 horizontally slidably mounted on the first sliding frame 221. Each of the second sliding frames 231 on both sides is equipped with a bearing frame, and a roller is rotatably mounted between the bearing frames. The frame 21 has clearance openings for the roller to pass through and move vertically. A grinding roller 24 is coaxially mounted on the roller, spanning the frame 21 and located above the conveyor belt 211. The axis of the grinding roller 24 is parallel to the conveyor roller. A lifting part 22 is used to adjust the distance between the grinding roller 24 and the conveyor belt 211 to accommodate sheet metal parts of different shapes and sizes. The horizontal reciprocating assembly 23 also includes a second slide rail 232 mounted on the first sliding frame 221, parallel to the axis of the grinding roller 24. A second slider 2311 is mounted on the second sliding frame 231, and the second slider 2311 is engaged with the second slide rail 232. A first motor 27 is mounted on the first sliding frame 231. The output shaft 271 of the first motor 27 is vertically arranged and has a mounting groove 2711. An eccentric block 2712 is fixed in the mounting groove 2711, and an eccentric column 2713 is vertically fixed to the eccentric block 2712. A drive shaft 2312 is vertically fixed on the second sliding frame 231. The line connecting the axes of the output shaft 271 and the drive shaft 2312 is parallel to the axis of the grinding roller 24. The drive shaft 2312 and the output shaft 271 are hinged. A connecting rod 28 is connected to the output shaft 271 via an eccentric bearing 281. The eccentric bearing 281 is sleeved on the eccentric column 2713. The rotation of the first motor 27 drives the eccentric column 2713 to rotate eccentrically, which in turn drives the eccentric bearing 281 to rotate eccentrically. The eccentric bearing 281 transmits the superimposed eccentric rotation to the drive shaft 2312 via the connecting rod 28 and then transmits it in a reciprocating pushing manner, thereby driving the grinding roller 24 to move reciprocally in the horizontal direction.

[0024] like Figures 6-7As shown, a pressing assembly 26 is also provided above the conveyor belt 211 on the frame 21. The pressing assembly 26 includes pressing plates 261 fixed to both sides of the frame 21, pressing rods 262 vertically slidably disposed on the pressing plates 261, and pressing rollers 2621 rotatably disposed between the pressing rods 262 on both sides. A spring 263 is provided between the pressing rods 262 and the pressing plates 261. The spring 263 is used to press the pressing rollers 2621 against the sheet metal parts, thereby ensuring that the sheet metal parts will not shift when being ground by the grinding rollers 24. The spring 263 can be adjusted to accommodate sheet metal parts of different sizes. The frame 21 is also provided above the conveyor belt 211. A spray assembly 25 is provided, which includes several spray pipes 251 spaced apart on the frame 21, a guide channel 252 and a water collection tank 253 provided on the frame 21. One end of the spray pipe 251 is sealed and welded to the inner wall of the frame 21, and the other end is open and protrudes from one side of the frame 21. The spray pipes 251 are spaced apart from the grinding rollers 24 and are located above the conveyor belt 211. The guide channel 252 is located below the conveyor belt 211, and the water collection tank 253 is located below the guide channel 252. The water collection tank 253 is equipped with a water pump 2531, which is connected to the spray pipes 251 through pipelines to ensure the recycling of water.

[0025] The specific implementation process is as follows: The automotive sheet metal parts to be processed first enter the cleaning machine 1. After the cleaning machine 1 removes impurities such as oil, iron filings, and oxide scale from the surface of the workpiece, the workpiece sequentially enters two wire drawing machines 2 in a series wire drawing group for secondary wire drawing processing. When the wire drawing machine 2 is working, the conveyor motor drives the conveyor roller to rotate, which drives the conveyor belt 211 to transport the workpiece. According to the thickness of the workpiece and the processing requirements, the height of the lifting part 22 is adjusted by the drive assembly 29 at the bottom of the frame 21. Rotating the motor 292 can drive the worm gear assembly to drive the lead screw 2211 to rotate, so that the first sliding frame 221 can move vertically a large distance along the first slide rail 222, and the distance between the grinding roller 24 and the conveyor belt 211 can be quickly adjusted. If fine adjustment is required, the worm can be driven to rotate by rotating the handle 293 to achieve a small range of precise adjustment of the distance between the grinding roller 24. After the height of the grinding roller 24 is adjusted to the correct position, the first motor 27 starts, and the output shaft 271 drives the eccentric block 2712 to rotate. The eccentric column 2713 moves eccentrically with the eccentric block 2712. The drive shaft 2312 is driven by the eccentric bearing 281 and the connecting rod 28, which drives the second sliding frame 231 to move horizontally back and forth along the second slide rail 232. This, in turn, drives the grinding roller 24 to move horizontally back and forth above the conveyor belt 211. Combined with the rotational motion of the grinding roller 24, it achieves comprehensive grinding of the workpiece surface, solving the problem of fixed contact area of ​​the traditional grinding roller 24. During the workpiece conveying process, the spring 263 of the pressing assembly 26 pushes the pressing rod 262 downward, so that the pressing roller 2621 presses against the workpiece surface, ensuring that the workpiece does not shift during the grinding process. At the same time, the water pump 2531 of the spray assembly 25 delivers water from the water collection tank 253 to the spray pipe 251. The spray pipe 251 sprays the grinding roller 24 and the workpiece for cooling and cleaning. The wastewater after use is collected in the water collection tank 253 through the guide channel 252 for recycling. After secondary wire drawing by two wire drawing machines 2, a uniform filamentous texture is formed on the surface of the workpiece, completing the entire secondary wire drawing process.

[0026] Example 2 like Figure 10As shown, the difference between Embodiment 2 and Embodiment 1 is that the inlet of the cleaning machine 1 is connected to a water tank 3 for etching the workpiece. Heating tubes 31 are symmetrically fixedly installed on the left and right inner walls of the water tank 3. An installation ring 37 is fixedly installed on the inner wall of the water tank 3. Stainless steel plates 32 are fixedly installed on the inner wall of the installation ring 37 by bolts. A slot is opened at the bottom of the water tank 3, and a stainless steel plate 32 is engaged in the slot. A filter box 33 is set on one side of the water tank 3. Two partitions 331 are set in the filter box 33. The two partitions 331 are evenly fixedly installed on the inner wall of the filter box 33. Each partition 331 has an installation groove 2711. A filter screen 3311 is fixedly installed in the installation groove 2711. A water inlet pipe 34 connects the filter box 33 to the water tank 3. The water tank 3 is connected to the right end of the water tank 3 via the outlet pipe 35. The filter screen 3311 near the inlet pipe 34 has a smaller aperture than the filter screen 3311 near the outlet pipe 35. A liquid pump is installed between the inlet pipe 34 and the filter box 33. A spray pipe is fixedly installed at one end of the inlet pipe 34 in the water tank 3. The spray pipe can evenly send the filtered etching solution into the water tank 3 in the form of spray water. The uniform thrust generated by the spray water can more efficiently push the floating scum and impurities on the surface of the etching solution toward the outlet pipe 35, avoiding local accumulation of scum. The height of the inlet pipe 34 is higher than that of the outlet pipe 35. The gravity potential energy forms a natural guiding effect, which accelerates the flow of the etching solution carrying impurities toward the filter box 33 and increases the rate at which the etching solution flows from the water tank 3 to the filter box 33.

[0027] like Figure 11 As shown, two hooks are fixedly installed on the upper end of the stainless steel plate 32. The hooks can hang the stainless steel plate 32 on the water spray pipe. The position of the stainless steel plate 32 in the water tank 3 can be adjusted by the position of the workpiece in the water tank 3, so that the stainless steel plate 32 is always opposite to the workpiece. An arc-shaped blocking plate 322 is fixedly installed at the front end of the stainless steel plate 32. The arc-shaped blocking plate 322 can block the water spray nozzle on the outer wall of the water spray pipe. When the arc-shaped blocking plate 322 abuts against the water spray pipe, the water spray thrust on both sides of the stainless steel plate 32 is increased due to the reduced outlet of the water spray pipe. This can push the scum on the surface of the etching solution to the outlet pipe 35 side more quickly. In conjunction with the filter assembly, the scum collection and filtration efficiency is improved, and the interference of scum retention on etching is reduced. By flexibly adjusting the suspension position of the stainless steel plate 32 according to the immersion position of the workpiece in the water tank 3, it is ensured that the stainless steel plate 32 is always opposite to the workpiece, ensuring the consistency of the corresponding positions of the cathode and anode, providing a basis for the establishment of a uniform electric field, and avoiding the problem of insufficient local etching caused by the misalignment of the cathode and anode from the root, thereby improving the etching uniformity and accuracy of the workpiece surface. The arc-shaped blocking plate 322 can block the water spray directly above the workpiece, preventing the etching liquid from directly hitting the top of the workpiece, preventing the workpiece surface from being damaged by the impact of the etching liquid and thus preventing the filtered etching liquid from directly entering the etching liquid and contacting the workpiece surface, causing the scum to be carried by the directly entered etching liquid and attached to the workpiece surface, thereby ensuring the surface smoothness of the workpiece after etching.

[0028] The specific implementation process is as follows: The heating tube 31 is turned on to heat the etching solution, and the workpiece and the stainless steel plate 32 in the water tank 3 are powered on. The water pump 2531 draws the etching solution from the filter box 33 through the water inlet pipe 34, and then sends it evenly into the water tank 3 in the form of water spray through the water spray pipe at the end of the water inlet pipe 34. The thrust generated by the water spray pushes the impurities floating on the surface of the etching solution in the water tank 3 to one side of the water outlet pipe 35, thereby avoiding the accumulation of impurities in the water tank 3. Since the height of the end of the water outlet pipe 35 that extends into the water tank 3 is higher than the height of the end that extends into the filter box 33, the etching solution containing impurities is guided along the water outlet pipe 35 to the filter box 33 under the action of the thrust generated by the water spray and gravity. After the etching solution enters the filter box 33, it passes through the filter screen 3311 on the two partitions 331 for filtration. The filtered clean etching solution is drawn back into the water tank 3 by the water pump 2531, forming an etching solution circulation filtration loop.

[0029] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A secondary wire drawing device, characterized in that: It includes a cleaning machine and a series wire drawing group. The cleaning machine and the series wire drawing group are connected in series. The workpiece passes through the cleaning machine and the series wire drawing group in sequence. The cleaning machine is used to remove impurities from the workpiece, and the series wire drawing group is used to draw wires on the surface of the workpiece to form a uniform filamentous texture. The series wire drawing group includes at least two wire drawing machines connected in series. The wire drawing machine includes a frame with a conveyor belt mounted on it. A lifting unit is vertically slidably mounted on the frame, and a grinding roller is mounted on the lifting unit. The grinding roller spans the frame and is located above the conveyor belt. The lifting unit is used to adjust the distance between the grinding roller and the conveyor belt. A horizontal reciprocating assembly is mounted on the lifting unit to drive the grinding roller to move horizontally above the conveyor belt. A pressing assembly and a spraying assembly are also mounted on the frame above the conveyor belt. The pressing assembly is used to press the workpiece onto the conveyor belt.

2. The secondary wire drawing equipment according to claim 1, characterized in that: The lifting unit includes a first sliding frame symmetrically slidably disposed on both sides of the frame; the horizontal reciprocating assembly includes a second sliding frame horizontally slidably disposed on both sides of the first sliding frame, and the grinding roller is rotatably disposed between the two second sliding frames; a first motor is mounted on the first sliding frame, the output shaft of the first motor is vertically disposed, a drive shaft is vertically fixed on the second sliding frame, a connecting rod is hinged between the drive shaft and the output shaft, and the connecting rod is rotatably connected to the output shaft through an eccentric bearing.

3. The secondary wire drawing equipment according to claim 2, characterized in that: The output shaft has a mounting groove, an eccentric block is fixed in the mounting groove, an eccentric column is vertically fixed to the eccentric block, and an eccentric bearing is sleeved on the eccentric column.

4. The secondary wire drawing equipment according to claim 2, characterized in that: The lifting unit also includes a first slide rail symmetrically fixed on both sides of the frame, and a first sliding frame is provided with a first slider, which is engaged with the first slide rail.

5. The secondary wire drawing equipment according to claim 4, characterized in that: A lead screw is rotatably mounted at the bottom of the first sliding frame, and a drive assembly is mounted at the bottom of the frame. The lead screw is threadedly connected to the drive assembly.

6. The secondary wire drawing equipment according to claim 2, characterized in that: The horizontal reciprocating assembly also includes a second slide rail disposed on the first sliding frame, the second sliding frame being provided with a second slider, and the second slider being engaged with the second slide rail.

7. The secondary wire drawing equipment according to claim 1, characterized in that: The spray assembly includes several spray pipes spaced apart on the frame, a guide trough and a water collection tank on the frame. The spray pipes are spaced apart from the grinding rollers and located above the conveyor belt. The guide trough is located below the conveyor belt and the water collection tank is located below the guide trough. The water collection tank is equipped with a water pump, and the water pump is connected to the several spray pipes through pipelines.

8. The secondary wire drawing equipment according to claim 1, characterized in that: The pressing assembly includes pressing plates fixed to both sides of the frame, pressing rods vertically slidably mounted on the pressing plates, pressing rollers rotatably mounted between the pressing rods on both sides, and springs mounted between the pressing rods and the pressing plates.

9. The secondary wire drawing equipment according to claim 1, characterized in that: The inlet of the cleaning machine is connected to a water tank for etching workpieces. A filter box is installed on one side of the water tank, and the water tank and the filter box are connected by a pipe.

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