CN114888532A - Device and method for manufacturing steel pickaxe by using waste steel rail - Google Patents

Abstract

The invention discloses a device for manufacturing steel picks from scrap steel rails, comprising a feeding unit, a cutting unit, a cleaning unit, a transmission unit, a melting furnace, an injection molding unit and a grinding and polishing unit; the feeding unit is used for transporting the recovered scrap steel rails To the cutting unit area, the scrap rail is cut by the cutting unit according to the preset length; the cleaning unit is used to wash the dust and part of the rust on the surface of the cut scrap rail; the transfer unit is used to remove the rusted scrap. The rail is transferred to the melting furnace to physically melt the steel to obtain molten iron with a certain proportion of carbon; the injection molding unit is used to inject the molten iron into the mold, and the preliminary model of the steel pick is obtained after cooling; the grinding and polishing unit is used for the steel pick. The preliminary model is ground and polished to obtain the finished steel pick. Through the cleaning, melting and injection molding processes, the invention makes the method and equipment for manufacturing steel picks applicable to the field of more scrap steel making steel picks; the steel does not produce much waste.

Description

A kind of equipment and method for manufacturing steel pick using scrap steel rail

technical field

The invention belongs to the technical field of steel pick manufacturing, and in particular relates to a device and a method for manufacturing a steel pick using scrap steel rails.

Background technique

Steel picks have a wide range of uses and can be used in agriculture, industry and military, so the market prospect of steel picks is good. Some of the existing steel pick manufacturers use recycled waste steel rails to make steel picks. Using recycled waste steel rails to make steel picks can not only realize the recycling of resources, but also reduce the cost of producing steel picks and help manufacturers obtain more. profit. When using recycled scrap rails to make steel picks, due to the long-term idleness of the scrap rails, the surface has a lot of rust and dust, and it is necessary to clean up the scrap rails. The scrap rails are heavy, and manual cleaning is inconvenient. Can not meet the requirements of steel pickaxe production accuracy.

The Chinese invention patent with the existing patent number of CN202010286011.6 discloses a train wheel piece automatic steel pick line device, which includes a conveying bracket, a fixed bracket, a conveying part, a pen-drawing part, a lifting part, a motor, a cam, Blanking parts, platform plates, lifting rods, fixed sleeves, first springs, levers, platform support rods, levers and second springs; by automatically scribing steel picks on the train wheels, it has changed the traditional train wheel The phenomenon that the sheet-scribing steel pick line relies on manual operations, the operation is simple and quick, the efficiency of the train wheel sheet-scribing steel pick line is improved, and the labor intensity of the staff is reduced.

The defects of the existing patent are: 1. The rust and dust cleaning steps of the train wheels are not taken into account, and it cannot be applied to a large-scale production line for making steel picks from waste steel; There are more residual materials, resulting in a lot of waste of steel, and a whole piece of wheel cannot be fully used for the production of steel picks.

SUMMARY OF THE INVENTION

Aiming at the problems that the existing equipment for manufacturing steel picks wastes a lot of steel and cannot be applied to a large-scale production line for manufacturing steel picks from waste steel, the present invention provides a device and method for manufacturing steel picks from scrap steel rails.

For realizing the above-mentioned technical purpose, the technical scheme adopted in the present invention is as follows:

A device for manufacturing steel picks from scrap steel rails, comprising a feeding unit, a cutting unit, a cleaning unit, a conveying unit, a melting furnace, an injection molding unit and a grinding and polishing unit;

The feeding unit is used to transport the recycled scrap rails to the cutting unit area, and the scrap rails are cut to a preset length by the cutting unit;

The cleaning unit is used to wash the dust and part of the rust on the surface of the scrap rail after cutting;

The transfer unit is used to transfer the scrap rails after derusting to the melting furnace to physically melt the steel to obtain molten iron with a certain carbon content;

The injection molding unit is used to inject molten iron into the mold and obtain the preliminary model of the steel pick after cooling;

The grinding and polishing unit is used for grinding and polishing the preliminary model of the steel pick to obtain the finished steel pick.

Further, the cutting unit includes a cutting machine and a waste rail fixed length measuring device, the cutting machine includes a cutting body, a cutting blade, a rotating motor, a slider and a sliding rail, and the scrap rail fixed length measuring device is determined by two infrared distance measuring devices. The sensor is composed; two infrared distance measuring sensors are respectively arranged on both sides of the cutting body, the cutting body is arranged on both sides of the transmission unit, the surface of the cutting body is provided with a sliding rail, a sliding block is set on the sliding rail, and a rotating motor is installed on the sliding block to rotate A cutting blade is connected to the output shaft of the motor.

Further, the infrared distance measuring sensor at the front of the transmission direction of the transmission unit detects the entry of the scrap rail, and the infrared distance sensor at the back of the transmission unit detects the scrap rail and stops immediately, and the distance between the two infrared distance sensors It is equal to 0.5 times the length of the scrap rail to be cut, and the running track of the cutting blade is on the bisector between the two infrared ranging sensors.

Further, the vertical direction of the sliding rail is provided with an opening, and the bottom of the opening is provided with a waste collection box.

Further, the cleaning unit includes a high-pressure water washing mechanism, a grabbing mechanism and a shot blasting machine, the high-pressure water washing mechanism includes a high-pressure water pipe and a spray head, and the grabbing mechanism includes a first movable arm and a gripper; the tail of the transmission unit is provided with a filter screen, and the bottom of the filter screen is provided with a filter screen. There is a cleaning pool, and the cleaning pool pressurizes the water through a high-pressure water pipe and transmits it to the nozzle;

The first movable arm includes a rotating rod, a telescopic cross rod and a telescopic vertical rod. The rotating rod is installed on one side of the filter screen. The upper end of the rotating rod is connected with a horizontally telescopic telescopic cross rod. One end of the telescopic cross rod is connected with the rotating rod, and the other end is connected with the telescopic rod. The top of the vertical rod is connected, and the bottom of the telescopic vertical rod is connected with a gripper. The scrap rails cut on the transmission unit are caught by the gripper to the filter screen, and then the dust and part of the rust on the scrap rails are cleaned by spraying high-pressure water through the nozzle. ;

The shot blasting machine is set at the end of the filter screen, which is used for deep rust removal of the cleaned scrap rails, and at the same time, the scrap rails after deep rust removal are transferred to the melting furnace.

Further, the conveyor belt at the end of the shot blasting machine transports the scrap rails to the melting furnace. The melting furnace melts the scrap rails at high temperature to obtain molten iron with a certain carbon content, and injects molten iron into the injection molding unit through pipes.

Further, the injection molding unit includes a rotating disc, a model groove, a servo motor at the bottom of the rotating disc, and a motor wrapping box; the rotating disc is arranged on the upper end of the motor wrapping box, a model groove is opened on the upper surface of the rotating disc, and the servo motor is connected to the rotating disc through the output shaft. The bottom is connected. The model groove includes a steel pick slot and a steel pick connection port. The steel pick groove has the same shape as the steel pick. The steel pick connection port is an isolation tube to prevent molten iron from flowing into it.

Further, the grinding and polishing unit includes a support table, a steel pick arm and a grinding and polishing arm;

A steel pick arm and a grinding and polishing arm are installed on the support table;

The steel pick arm includes a second movable arm and a T-shaped piece. The second movable arm includes a first rotating column, a foldable crossbar and a telescopic rod. The first rotating column is installed on the upper end of the support table, and the foldable crossbar The bottom of one end is connected to the upper end of the first rotating column, the bottom of the other end of the foldable crossbar is connected to the upper end of the telescopic rod, and the middle part is provided with a rotating shaft to control the foldable crossbar to freely rotate along the vertical plane; the bottom of the telescopic rod is connected to the T-shaped The upper end of the profile is connected, and the bottom diameter of the T-shaped piece is equal to the outer diameter of the isolation pipe;

The grinding and polishing arm includes a second rotating column, a connecting rod and a grinding wheel, the second rotating column is connected with the grinding wheel through the connecting rod, and the grinding wheel is connected with the bottom of one end of the connecting rod through a bearing.

Further, one side of the injection molding unit is also provided with an isolation pipe mechanism, and the isolation pipe mechanism includes a third movable arm and a T-shaped pipe fitting with the same structure as the second movable arm, and the T-shaped pipe fitting is connected with one end of the third movable arm, The other end of the third movable arm is fixedly connected to the ground, and the inner diameter of the bottom orifice of the T-shaped pipe fitting is equal to the outer diameter of the isolation pipe.

A method for manufacturing a steel pick using scrap steel rails, comprising the steps of:

S1. Feed the recycled scrap rails to the cutting area;

S2. Cut the scrap rail to a fixed length;

S3. Clean the dust and part of the rust on the surface of the scrap rail after cutting by high pressure scouring;

S4. Quickly dry the cleaned scrap rail, and complete the shot blasting and rust removal process;

S5. Transfer the scrap rails that have been shot blasted and derusted to the melting furnace to obtain molten iron with a certain carbon content;

S6, inject molten iron into the mold, and obtain a preliminary model of the steel pick after cooling;

S7, after demoulding, grinding and polishing to obtain the finished steel pick.

Compared with the prior art, the present invention has the following beneficial effects:

Through the equipment and method for manufacturing steel picks of the present invention, the scrap steel rails are cleaned, melted, injection-molded and polished to obtain high-precision steel picks.

Through the process of cleaning, melting and injection molding, the method and equipment for manufacturing steel picks are applicable to the fields of more scrap steel making steel picks; the steel materials are not much wasted.

Description of drawings

Fig. 1 is the overall structure schematic diagram of a kind of equipment utilizing scrap rail to manufacture steel pick according to the present invention;

Fig. 2 is the cutting unit structure schematic diagram of a kind of equipment utilizing scrap rail to manufacture steel pick according to the present invention;

Fig. 3 is a kind of structural schematic diagram of the cleaning unit part of the equipment for manufacturing steel picks using scrap rails according to the present invention;

4 is a schematic structural diagram of a melting furnace, an injection molding unit and a grinding and polishing unit of a device for manufacturing steel picks using scrap rails according to the present invention;

Fig. 5 is a kind of top-view structural schematic diagram of the rotating disk of the equipment for manufacturing steel picks using scrap steel rails according to the present invention;

FIG. 6 is a flow chart of a method for manufacturing a steel pick using scrap rails according to the present invention.

Description of marks in the figure: 1-feeding unit, 2-cutting unit, 21-cutting machine, 211-cutting body, 212-cutting blade, 213-rotating motor, 214-slider, 215-slide rail, 22-infrared measuring Distance sensor, 3-cleaning unit, 31-high pressure water washing mechanism, 311-high pressure water pipe, 312-spray head, 32-grab mechanism, 321-first movable arm, 3211-rotating rod, 3212-telescopic cross rod, 3213-telescopic Lever, 322-Gripper, 33-Blast Machine, 4-Transfer Unit, 5-Melting Furnace, 6-Injection Molding Unit, 61-Rotating Disc, 62-Model Slot, 621-Steel Pick Slot, 622-Steel Pick Connection port, 63-servo motor, 64-motor packing box, 7-grinding and polishing unit, 71-support table, 72-steel pick arm, 721-second movable arm, 7211-first rotating column, 7212-turnable Folding cross bar, 7213-retractable rod, 722-T-shaped piece, 73-grinding and polishing arm, 731-second rotating column, 732-connecting rod, 733-grinding wheel, 8-opening, 9-waste collection box, 10-Filter screen, 11-Cleaning tank, 12-Sprinkler head, 13-High pressure water pipe, 14-Pipeline, 15-Isolation pipe mechanism, 151-Third movable arm, 152-T-shaped pipe fitting, 16-Rotating shaft.

Detailed ways

In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the embodiments and the accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

As shown in Figures 1-5, an equipment for manufacturing steel picks from scrap rails includes a feeding unit 1, a cutting unit 2, a cleaning unit 3, a transfer unit 4, a melting furnace 5, an injection molding unit 6 and a grinding and polishing unit 7 .

The feeding unit 1 is used for transporting the recovered scrap steel rails to the area of the cutting unit 2, and cutting the scrap steel rails according to a preset length by the cutting unit 2; The cutting machine 21 includes a cutting body 211, a cutting blade 212, a rotating motor 213, a sliding block 214 and a sliding rail 215. The waste rail fixed-length measuring device is composed of two infrared distance measuring sensors 22; the two infrared distance measuring sensors 22 are respectively arranged in On both sides of the cutting body 211, the cutting body 211 is arranged on both sides of the transmission unit 4, the surface of the cutting body 211 is provided with a sliding rail 215, a sliding block 214 is arranged on the sliding rail 215, and a rotating motor 213 is installed on the sliding block 214, and the rotating motor 213 outputs the output A cutting blade 212 is attached to the shaft. The two infrared distance measuring sensors 22 are arranged to ensure that the length of the cutting blade 212 can be controlled, and the length of the scrap rail after cutting is convenient for cleaning. The cutting blade 212 can freely slide along the sliding block 214 within the sliding range of the sliding rail 215 to cut the scrap rail, and the position of the cutting body 211 provides fixed-point cutting positioning for the cutting blade 212 to cut.

The infrared distance-measuring sensor 22 in the front of the transmission direction of the transmission unit 4 detects the entry of the scrap rail, and the infrared distance-measuring sensor 22 at the rear of the transmission unit 4 detects the scrap rail and stops immediately. The distance between them is equal to 0.5 times the length of the scrap rail to be cut, and the running track of the cutting blade 212 is on the middle bisector between the two infrared distance measuring sensors 22 . The main purpose of setting the two infrared distance measuring sensors 22 is to quantify the length of the scrap rail that needs to be cut, that is, the distance between the infrared distance measuring sensor 22 behind the transmission direction of the transmission unit 4 and the cutting blade 212; if the cutting blade 212 is located in the middle, Then the distance between the two infrared ranging sensors 22 is equal to 0.5 times the length of the scrap rail to be cut, and the preset cutting scrap rail length can be obtained by using the line segment ratio.

The transmission unit 4 facing the slide rail 215 in the vertical direction is provided with an opening 8 , and the bottom of the opening 8 is provided with a waste collection box 9 . The location of the opening 8 and the waste collection box 9 facilitates the recovery of iron filings or other dust produced by the cutting machine 21 cutting the scrap rail.

The cleaning unit 3 is used to wash the dust and part of the rust on the surface of the scrap rail after cutting; the cleaning unit 3 includes a high-pressure water washing mechanism 31, a grabbing mechanism 32 and a shot blasting machine 33. The spray head 12312, the grabbing mechanism 32 includes a first movable arm 321 and a gripper 322; a filter screen 10 is provided at the rear of the transmission unit 4, and a cleaning pool 11 is provided at the bottom of the filter screen 10. The cleaning pool 11 pressurizes the water through the high-pressure water pipe 13311 Transfer to the showerhead 12312.

The first movable arm 321 includes a rotating rod 3211, a telescopic cross rod 3212 and a telescopic vertical rod 3213. The rotating rod 3211 is installed on one side of the filter screen 10, and the upper end of the rotating rod 3211 is connected with a horizontally telescopic telescopic cross rod 3212. One end of the telescopic cross rod 3212 It is connected with the rotating rod 3211, and the other end is connected with the top of the telescopic vertical rod 3213. The bottom of the telescopic vertical rod 3213 is connected with a gripper 322. The scrap rails cut on the transmission unit 4 are caught on the filter screen 10 by the gripper 322. The dust and part of the rust on the scrap rails are cleaned by spraying high-pressure water through the nozzle 12312.

The transfer unit 4 is used to transfer the scrap rail after derusting to the melting furnace 5 to physically melt the steel to obtain molten iron with a certain carbon content. The transfer unit 4 includes the transfer before cleaning and the transfer to the melting furnace 5 after cleaning.

The shot blasting machine 33 is arranged at the end of the filter screen 10 , and is used to perform deep rust removal on the cleaned scrap rails, and at the same time transfer the deeply rusted scrap rails to the melting furnace 5 .

The conveyor belt at the end of the shot blasting machine 33 transports the scrap rails to the melting furnace 5 . The melting furnace 5 melts the scrap rails at high temperature to obtain molten iron with a certain carbon content, and injects molten iron into the injection molding unit 6 through the pipeline 14 .

The transfer unit 4 is used to transfer the scrap rail after derusting to the melting furnace 5 to physically melt the steel to obtain molten iron with a certain carbon content. The advantage of the scrap rail-made steel pick is that the carbon content in the iron is certain, and the preferred ratio is already suitable for use as a steel pick. There is no need to further adjust the carbon content of the iron in the melting furnace 5, so the adjustment step of the carbon content is saved. .

The injection molding unit 6 is used to inject molten iron into the mold and obtain a preliminary model of the steel pick after cooling; the injection molding unit 6 includes a rotating disc 61, a model groove 62, a servo motor 63 and a motor wrapping box 64 at the bottom of the rotating disc 61; The disk 61 is arranged on the upper end of the motor wrapping box 64, the upper surface of the rotating disk 61 is provided with a model groove 62, the servo motor 63 is connected with the bottom of the rotating disk 61 through the output shaft, and the model groove 62 includes a steel pick groove 621 and a steel pick connection port 622. The pick slot 621 has the same shape as the steel pick, and the steel pick connecting port 622 is an isolation pipe to prevent molten iron from flowing in. The setting of the servo motor 63 is convenient to control the rotation angle of the rotating disk 61 each time, and the molten iron is injected into the model groove 62 .

One side of the injection molding unit 6 is also provided with an isolation tube mechanism 15. The isolation tube mechanism 15 includes a third movable arm 151 with the same structure as the second movable arm 721 and a T-shaped pipe fitting 152. The T-shaped pipe fitting 152 and the third movable arm 721 One end of the arm 151 is connected, the other end of the third movable arm 151 is fixedly connected to the ground, and the inner diameter of the bottom nozzle of the T-shaped pipe fitting 152 is equal to the outer diameter of the isolation pipe. The purpose of setting the T-shaped pipe fitting 152 is to take out the isolation pipe in the mold groove 62 cooled after injection molding, so as to further facilitate the insertion of the bottom of the T-shaped member 722 of the grinding and polishing unit 7 into the steel pick connection port 622, and through the T-shaped member 722 The inner diameter of the bottom nozzle is equal to the outer diameter of the isolation tube, which is convenient to take out the whole steel pick for further grinding and polishing operations.

The grinding and polishing unit 7 is used for grinding and polishing the preliminary model of the steel pick to obtain the finished steel pick. The grinding and polishing unit 7 includes a support table 71, a steel pick arm 72 and a grinding and polishing arm 73; a steel pick arm 72 and a grinding and polishing arm 73 are installed on the support table 71; the steel pick arm 72 includes a second movable arm 721 and T The font member 722 and the second movable arm 721 include a first rotating column 7211, a foldable cross bar 7212 and a telescopic bar 7213. The first rotating column 7211 is installed on the upper end of the support table 71, and the bottom of one end of the foldable cross bar 7212 is connected to the upper end of the support table 71. The upper end of the first rotating column 7211 is connected, the bottom of the other end of the foldable cross bar 7212 is connected to the upper end of the retractable bar 7213, and the middle part is provided with a rotating shaft 16 to control the foldable cross bar 7212 to freely rotate along the vertical plane; the bottom of the retractable bar 7213 Connected with the upper end of the T-shaped piece 722, the bottom diameter of the T-shaped piece 722 is equal to the outer diameter of the isolation pipe; the grinding and polishing arm 73 includes a second rotating column 731, a connecting rod 732 and a grinding wheel 733, and the second rotating column 731 passes through the connecting rod 732. It is connected with the grinding wheel 733, and the grinding wheel 733 is connected with the bottom of one end of the connecting rod 732 through a bearing. The structural arrangement of the steel pick arm 72 is convenient for taking the steel pick from the model and freely moving or flipping the steel pick for grinding and polishing with the grinding wheel 733 .

As shown in Figure 6, a method for manufacturing a steel pick using scrap steel rails includes the steps: S1, feeding the recovered scrap steel rails to a cutting area; S2, cutting the scrap steel rails to a fixed length; S3, cutting the scrap steel rails to a fixed length; The dust and part of the rust on the surface of the scrap rail are cleaned by high-pressure scouring; S4, the cleaned scrap rail is quickly dried, and the shot blasting and rust removal process is completed; S5, the scrap rail that has been shot blasted and derusted is transferred to the melting furnace In step 5, molten iron with a certain proportion of carbon is obtained; S6, the molten iron is injected into the mold, and a preliminary model of the steel pick is obtained after cooling; S7, after demoulding, grinding and polishing to obtain a finished steel pick.

Compared with the prior art, the present invention has the following beneficial effects:

Through the equipment and method for manufacturing steel picks of the present invention, the scrap steel rails are cleaned, melted, injection-molded and polished to obtain high-precision steel picks.

Through the process of cleaning, melting and injection molding, the method and equipment for manufacturing steel picks are applicable to the fields of more scrap steel making steel picks; the steel materials are not much wasted.

The equipment and method for manufacturing a steel pick using scrap steel rails provided by the present application have been described in detail above. The description of the specific embodiment is only used to help understand the method and the core idea of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present application, several improvements and modifications can also be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims (10)

1. The equipment for manufacturing the steel pickaxe by using the waste steel rail is characterized by comprising a feeding unit (1), a cutting unit (2), a cleaning unit (3), a transmission unit (4), a melting furnace (5), an injection molding unit (6) and a grinding and polishing unit (7);

the feeding unit (1) is used for transporting the recovered waste steel rails to the area of the cutting unit (2), and the waste steel rails are cut according to a preset length through the cutting unit (2);

the cleaning unit (3) is used for washing dust and part of rust on the surface of the cut waste steel rail;

the transmission unit (4) is used for transmitting the derusted waste steel rails to a melting furnace (5) for physical steel melting to obtain molten iron with a certain carbon content;

the injection molding unit (6) is used for injecting molten iron into the mold and obtaining a primary model of the steel pick through cooling;

and the grinding and polishing unit (7) is used for grinding and polishing the preliminary model of the steel pick to obtain a finished steel pick.

2. The apparatus for manufacturing a steel pick using waste steel rails according to claim 1, wherein the cutting unit (2) comprises a cutting machine (21) and a waste steel rail fixed length measuring device, the cutting machine (21) comprises a cutting body (211), a cutting blade (212), a rotating motor (213), a slider (214) and a slide rail (215), and the waste steel rail fixed length measuring device is composed of two infrared distance measuring sensors (22); two infrared distance measuring sensor (22) set up respectively in cutting body (211) both sides, and cutting body (211) set up in transmission unit (4) both sides, and slide rail (215) have been seted up on cutting body (211) surface, set up slider (214) on slide rail (215), install rotation motor (213) on slider (214), are connected with cutting blade (212) on rotation motor (213) output shaft.

3. An apparatus for manufacturing a steel pick using waste steel rails according to claim 2, wherein the infrared distance measuring sensor (22) of the transport unit (4) with the forward transport direction detects the entrance of the waste steel rail, the infrared distance measuring sensor (22) of the transport unit (4) with the backward transport direction detects the immediate stop of the waste steel rail, the distance between the two infrared distance measuring sensors (22) is equal to 0.5 times the length of the waste steel rail to be cut, and the running track of the cutting blade (212) is on the middle bisector between the two infrared distance measuring sensors (22).

4. A plant for making a steel pick with waste steel rails according to claim 3, characterized in that the vertically opposite conveying unit (4) of the sliding track (215) is provided with an opening (8), and the bottom of the opening (8) is provided with a scrap collecting box (9).

5. The apparatus for manufacturing the steel pick by using the waste steel rail as claimed in claim 4, wherein the cleaning unit (3) comprises a high pressure water washing mechanism (31), a grabbing mechanism (32) and a shot blasting machine (33), the high pressure water washing mechanism (31) comprises a high pressure water pipe (13) (311) and a spray head (12) (312), and the grabbing mechanism (32) comprises a first movable arm (321) and a grabbing hand (322); a filter screen (10) is arranged at the tail part of the transmission unit (4), a cleaning pool (11) is arranged at the bottom of the filter screen (10), and the cleaning pool (11) pressurizes water through high-pressure water pipes (13) (311) and then transmits the water to spray heads (12) (312);

the first movable arm (321) comprises a rotating rod (3211), a telescopic cross rod (3212) and a telescopic longitudinal rod (3213), the rotating rod (3211) is installed on one side of the filter screen (10), the upper end of the rotating rod (3211) is connected with the transversely telescopic cross rod (3212), one end of the telescopic cross rod (3212) is connected with the rotating rod (3211), the other end of the telescopic longitudinal rod (3213) is connected with the top end of the telescopic longitudinal rod (3213), the waste steel rails cut on the transmission unit (4) are grabbed onto the filter screen (10) through the grabber (322), and then the spray heads (12) (312) spray high-pressure water to clean dust and part of iron rust on the waste steel rails;

the shot blasting machine (33) is arranged at the tail end of the filter screen (10) and used for deeply removing rust from the cleaned waste steel rails and simultaneously transmitting the waste steel rails subjected to deep rust removal to the melting furnace (5).

6. The apparatus for manufacturing the steel pick using the waste steel rail as claimed in claim 5, wherein the waste steel rail is transported to the melting furnace (5) by a conveyor belt at the tail end of the shot blasting machine (33), the melting furnace (5) melts the waste steel rail at a high temperature to obtain molten iron with a certain carbon content ratio, and the molten iron is injected into the injection molding unit (6) through the pipeline (14).

7. An apparatus for manufacturing a steel pick using waste steel rails as claimed in claim 6, wherein the injection molding unit (6) comprises a rotary disc (61), a mold groove (62), a servo motor (63) at the bottom of the rotary disc (61), and a motor packing box (64); the rotating disc (61) is arranged at the upper end of the motor wrapping box (64), the upper surface of the rotating disc (61) is provided with a mold type groove (62), the servo motor (63) is connected with the bottom of the rotating disc (61) through an output shaft, the mold type groove (62) comprises a steel pick groove (621) and a steel pick connecting port (622), the steel pick groove (621) is identical to the steel pick in shape, and the steel pick connecting port (622) is an isolating pipe to prevent molten iron from flowing in.

8. An apparatus for manufacturing a steel pick using scrap rails as in claim 7 wherein the burnishing and polishing unit (7) comprises a support table (71), a steel pick taking arm (72) and a burnishing and polishing arm (73);

a steel taking pick arm (72) and a polishing arm (73) are arranged on the supporting table top (71);

the steel pick arm (72) is taken to comprise a second movable arm (721) and a T-shaped part (722), the second movable arm (721) comprises a first rotating upright post (7211), a turnover transverse rod (7212) and a telescopic rod (7213), the first rotating upright post (7211) is mounted at the upper end of a supporting table top (71), the bottom of one end of the turnover transverse rod (7212) is connected with the upper end of the first rotating upright post (7211), the bottom of the other end of the turnover transverse rod (7212) is connected with the upper end of the telescopic rod (7213), and a rotating shaft (16) is arranged in the middle of the turnover transverse rod (7212) to control the turnover transverse rod (7212) to freely rotate along a vertical plane; the bottom of the telescopic rod (7213) is connected with the upper end of the T-shaped part (722), and the diameter of the bottom of the T-shaped part (722) is equal to the outer diameter of the isolation pipe;

the polishing arm (73) comprises a second rotating upright column (731), a connecting rod (732) and a polishing wheel (733), the second rotating upright column (731) is connected with the polishing wheel (733) through the connecting rod (732), and the polishing wheel (733) is connected with the bottom of one end of the connecting rod (732) through a bearing.

9. The equipment for manufacturing the steel pick by using the waste steel rails is characterized in that one side of the injection molding unit (6) is further provided with an isolation pipe taking mechanism (15), the isolation pipe taking mechanism (15) comprises a third movable arm (151) and a T-shaped pipe fitting (152), the second movable arm (721) is the same in structure, the T-shaped pipe fitting (152) is connected with one end of the third movable arm (151), the other end of the third movable arm (151) is fixedly connected with the ground, and the inner diameter of a bottom pipe opening of the T-shaped pipe fitting (152) is equal to the outer diameter of the isolation pipe.

10. A method for manufacturing a steel pick by using waste steel rails is characterized by comprising the following steps:

s1, feeding the recovered waste steel rails to a cutting area;

s2, cutting the waste steel rail at a fixed length;

s3, performing high-pressure scouring cleaning on dust and part of rust on the surface of the cut waste steel rail;

s4, rapidly drying the cleaned waste steel rail and completing the shot blasting and rust removing process;

s5, conveying the waste steel rail subjected to shot blasting rust removal into a melting furnace (5) to obtain molten iron with a certain carbon-containing proportion;

s6, injecting molten iron into the mold, and cooling to obtain a primary model of the steel pick;

and S7, after demolding, grinding and polishing to obtain the finished steel pickaxe.

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