CN115740388A - Workpiece burr-free die casting equipment and process thereof - Google Patents

Abstract

The invention discloses a workpiece burr-free die-casting device and a process thereof, relating to the technical field of die-casting devices; the die-casting die comprises a base, an upper die and a lower die, wherein the lower die is arranged on the base, two first hydraulic cylinders are arranged on the base, the upper die is arranged at the piston ends of the two first hydraulic cylinders, and the upper die and the lower die are buckled to form a complete die-casting die; according to the die-casting die, the storage pipe is arranged in the feeding pipe in a sliding manner, the end parts of the storage pipe and the feeding pipe are both in a conical structure and are matched, the end part of the storage pipe is provided with the first conical groove, the end part of the movable rod is provided with the conical block which is in plug-in fit with the first conical groove, when die-casting raw materials are added, more die-casting raw materials can be properly added, redundant raw materials are separated from the raw materials in the die-casting die, the redundant raw materials are stored and reused, the filling of the raw materials in the die-casting die is ensured, the redundant raw materials cannot influence the shaped workpiece, and burrs or rough edges cannot be caused on the workpiece.

Description

Burr-free die-casting equipment and process for workpiece

Technical Field

The invention relates to the technical field of die casting equipment, in particular to a burr-free die casting equipment for a workpiece and a process thereof.

Background

The die casting is a metal casting process, and is characterized in that high pressure is applied to molten metal by utilizing a die cavity, the die is usually processed by using alloy with higher strength, the process is somewhat similar to injection molding, most die casting castings are iron-free, such as zinc, copper, aluminum, magnesium, lead, tin, lead-tin alloy and alloys thereof, a cold chamber die casting machine or a hot chamber die casting machine is required according to different die casting types, the traditional die casting process mainly comprises four steps or is called high-pressure die casting, the four steps comprise die preparation, filling, injection and sand falling, the four steps are also the basis of various improved die casting processes, the existing injection is to pour liquid die casting raw materials into a pouring pipe communicated with the die, then the die casting raw materials are injected into the die by high pressure of a push rod, the existing feeding is to add molten metal liquid into the pouring pipe from a crucible by using a manual mechanical arm or a holding tool, under the general condition, the held raw materials cannot be accurately controlled, the metal liquid poured into the pouring pipe has residual burrs, the residual liquid metal liquid in the pouring pipe can be pushed under the push rod, the situation, the residual burrs can be removed, and the residual burrs of the residual liquid in the pouring pipe can be removed, so that the residual burrs of the residual liquid after the manual die casting process can be removed.

Disclosure of Invention

The invention aims to: in order to solve the problems in the background, the invention provides a die-casting device and a die-casting process for a workpiece without burrs.

The invention specifically adopts the following technical scheme for realizing the purpose:

a workpiece burr-free die-casting device comprises a base, an upper die and a lower die, wherein the lower die is arranged on the base, two first hydraulic cylinders are arranged on the base, the upper die is arranged at the piston ends of the two first hydraulic cylinders, and the upper die and the lower die are buckled to form a complete die-casting die;

one end of the feeding pipe is communicated with the upper die, a communication opening is in a conical structure, one side of the feeding pipe is communicated with a pouring pipe, a storage pipe with two closed ends is arranged in the feeding pipe in a sliding mode, one end, located in the feeding pipe, of the storage pipe is in a conical structure, and a first conical groove is formed in the conical end in a penetrating mode;

the movable rod coaxially and movably penetrates through the storage pipe, one end of the movable rod is provided with a conical block which is in plug fit with the first conical groove, a cavity is formed in the movable rod, an electric heating wire is arranged in the cavity, the storage pipe is provided with an electric push rod, and the piston end of the electric push rod is fixedly connected with the other end of the movable rod;

and the lifting mechanism is arranged on the upper die and is used for driving the material storage pipe to lift.

Further, one side intercommunication of inlet pipe has the trachea, tracheal tip intercommunication has the vacuum pump, the trachea is close to the one end of inlet pipe is provided with the valve.

Further, be provided with a plurality of support column on the base, the bed die sets up in a plurality of on the support column, the bottom activity of bed die is run through and is had a plurality of to perforate, be provided with the second pneumatic cylinder on the base, the piston end of second pneumatic cylinder is provided with the mounting panel, be provided with a plurality of push rod, a plurality of on the mounting panel the free end of push rod activity respectively runs through a plurality of perforate.

Further, the communication position of the through hole and the inner bottom surface of the lower die is in a conical shape, and the free end of the pushing rod is provided with a conical head.

Further, be provided with the post on the base, be provided with multistage telescopic link on the post, the piston end of multistage telescopic link is provided with the ring tube, it has a plurality of atomising head to be the annular array intercommunication on the ring tube, the intercommunication has the conveyer pipe on the ring tube, the tye has been seted up to the lateral wall of propelling movement pole.

Further, elevating system includes mounting bracket, lead screw, slide bar and motor, wherein:

the mounting bracket sets up go up on the mould, the lead screw rotates and runs through the mounting bracket, the slide bar sets up on the mounting bracket, the motor sets up on the mounting bracket and its output shaft with the one end fixed connection of lead screw, be provided with two extension boards on the storage tube, one of them extension board threaded sleeve is established on the lead screw, another the extension board slip cap is established on the slide bar.

Further, the movable rod includes a first rod and a second rod, wherein:

the first supporting rod is connected with the conical block, the cavity is formed in the first supporting rod, the second supporting rod is connected with the electric push rod, and a connecting block is connected between the first supporting rod and the second supporting rod.

Furthermore, two lug plates are constructed on the lower die, two guide rods are arranged on the upper die, and the two guide rods respectively penetrate through the two lug plates in a sliding mode.

The invention also provides a process of the workpiece burr-free die-casting equipment, which comprises the following steps:

s1: the two first hydraulic cylinders do work, and the piston ends of the two first hydraulic cylinders contract to drive the upper die to move downwards, so that the upper die and the lower die are buckled, and a complete die-casting die is formed;

s2: the storage pipe is driven to ascend through the lifting mechanism, the conical end of the storage pipe is higher than a communication port of the pouring pipe and the feeding pipe, the die-casting raw materials are conveyed into the pouring pipe, the die-casting raw materials flow into the feeding pipe from the pouring pipe and then flow into a complete die-casting die formed by buckling the upper die and the lower die, and when the die-casting raw materials are filled in the die-casting die and overflow into the feeding pipe, the conveying of the die-casting raw materials is stopped;

s3: the electric push rod works, the piston end of the electric push rod drives the movable rod to move upwards, so that the conical block is far away from the first conical groove, the lifting mechanism drives the storage pipe to move downwards, the conical end of the storage pipe is movably inserted into a communicating port between the feed pipe and the upper die, excessive die-casting raw materials overflowing from the feed pipe flow into the storage pipe through the first conical groove, the electric push rod works, the piston end of the electric push rod drives the movable rod to move downwards, the conical block is inserted into the first conical groove along with the downward movement of the movable rod, so that the die-casting raw materials in the storage pipe and the die-casting raw materials in the die-casting die are separated, the die-casting raw materials in the die-casting die are filled, the excessive die-casting raw materials cannot be connected, and after the die-casting raw materials in the die-casting die are shaped, the surface of a workpiece is smooth and has no burrs;

s4: electric heating wire acting for with the movable rod heating, and with heat conduction to the die-casting raw materials of storage intraductal storage of storage, thereby make the die-casting raw materials be in the high temperature environment all the time under, can not condense, when treating next mould die-casting, electric putter acting, its piston rod drives the movable rod and shifts up, make and remove the shutoff of bell piece to first bell jar, the die-casting raw materials rethread inlet pipe circulation of storage intraductal storage of storage to die casting die in, be used for next mould die-casting.

The invention has the following beneficial effects:

1. through sliding the storage pipe in the inlet pipe, and the storage pipe all adopts toper structure and looks adaptation with the tip of inlet pipe, first bell jar is seted up to the tip of storage pipe, the tip setting of movable rod is pegged graft complex toper piece with first bell jar, when adding the die-casting raw materials, the die-casting raw materials can suitably add more, establish the cooperation through inserting of storage pipe and inlet pipe, the grafting cooperation of toper piece and first bell jar, can cut off unnecessary raw materials and the raw materials in the die casting die, and store unnecessary raw materials and recycle, the fullness of raw materials in the die casting die has not only been ensured, ensure the mass density after the work piece is stereotyped, guarantee simultaneously that unnecessary raw materials can not influence the work piece after the design, can not cause burr or deckle edge to the work piece.

2. Through the vacuum pump that sets up to carry out vacuum treatment in being used for to the die casting die, reduce the air in the die casting die, improve the die-casting effect, increase work piece density in the mould, thereby improved the quality after the work piece die-casting.

3. Through the arrangement of the second hydraulic cylinder, the mounting plate, the pushing rod and the through holes, the workpiece after being shaped can be pushed to the outside of the lower die, and therefore the workpiece can be conveniently taken by a worker.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a perspective sectional view of the present invention;

FIG. 3 is a partial perspective view of the present invention;

FIG. 4 is a partial perspective sectional view of the present invention;

FIG. 5 is a plan elevation view of the present invention;

FIG. 6 is an enlarged view taken at A of FIG. 2 in accordance with the present invention;

FIG. 7 is an enlarged view of the invention at B in FIG. 4;

reference numerals are as follows: 1. a base; 2. an upper die; 3. a lower die; 4. a first hydraulic cylinder; 5. a feed pipe; 6. a pouring tube; 7. a storage pipe; 8. a movable rod; 9. a conical block; 10. an electric heating wire; 11. an electric push rod; 12. a lifting mechanism; 13. an air pipe; 14. a vacuum pump; 15. a support column; 16. perforating; 17. a second hydraulic cylinder; 18. mounting a plate; 19. a push rod; 20. a post rod; 21. a multi-stage telescopic rod; 22. a circular ring tube; 23. a spray head; 24. a delivery pipe; 25. a launder; 26. a guide bar; 801. a first support bar; 802. a second support bar; 803. connecting blocks; 1201. a mounting frame; 1202. a screw rod; 1203. a slide bar; 1204. a motor; 1205. and (4) a support plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

As shown in fig. 1, fig. 2, fig. 3 and fig. 7, a workpiece burr-free die-casting device comprises a base 1, an upper die 2 and a lower die 3, wherein the lower die 3 is arranged on the base 1, two first hydraulic cylinders 4 are arranged on the base 1, the upper die 2 is arranged at the piston ends of the two first hydraulic cylinders 4, and the upper die 2 and the lower die 3 are buckled to form a complete die-casting die; the device comprises a feeding pipe 5, one end of the feeding pipe 5 is communicated with the upper die 2, a communication opening is in a conical structure, one side of the feeding pipe 5 is communicated with a pouring pipe 6, a storage pipe 7 with two closed ends is arranged in the feeding pipe 5 in a sliding mode, one end of the storage pipe 7, which is located in the feeding pipe 5, is in a conical structure, and a first conical groove is formed in the conical end in a penetrating mode; the movable rod 8 coaxially and movably penetrates through the material storage pipe 7, one end of the movable rod 8 is provided with a conical block 9 which is in plug fit with the first conical groove, a cavity is formed in the movable rod 8, an electric heating wire 10 is arranged in the cavity, the material storage pipe 7 is provided with an electric push rod 11, and the piston end of the electric push rod 11 is fixedly connected with the other end of the movable rod 8; the lifting mechanism 12 is arranged on the upper die 2 and used for driving the storage pipe 7 to lift, when the die-casting production is carried out, two first hydraulic cylinders 4 do work, the piston ends of the first hydraulic cylinders contract to drive the upper die 2 to move downwards so as to enable the upper die 2 and the lower die 3 to be buckled, so that a complete die-casting die is formed, the storage pipe 7 is driven to ascend through the lifting mechanism 12, the conical end of the storage pipe 7 is higher than the communication port of the pouring pipe 6 and the feeding pipe 5, the die-casting raw materials are conveyed into the pouring pipe 6, the die-casting raw materials are conveyed to the feeding pipe 5 from the pouring pipe 6 and then are conveyed into the complete die-casting die formed by buckling the upper die 2 and the lower die 3, when the die-casting raw materials are filled in the die-casting die and overflow into the feeding pipe 5, the conveying of the die-casting raw materials is stopped, at the moment, the electric push rod 11 does work, the piston end of the piston end drives the movable rod 8 to move upwards, so that the conical block 9 is far away from the first conical groove, then the lifting mechanism 12 is used for driving the material storage pipe 7 to move downwards, so that the conical end of the material storage pipe 7 is movably inserted into the communicating port between the material inlet pipe 5 and the upper die 2, preferably, after the conical end of the material storage pipe 7 is inserted into the communicating port between the material inlet pipe 5 and the upper die 2, the end part of the material storage pipe 7 is flush with the inner top surface of the upper die 2, so as to ensure the flatness of the shaped workpiece, because the conical block 9 is far away from the first conical groove, when the material storage pipe 7 moves downwards, the excessive die-casting raw material overflowing from the material inlet pipe 5 is circulated into the material storage pipe 7 through the first conical groove, when the end part of the material storage pipe 7 is completely attached to the communicating port between the material inlet pipe 5 and the upper die 2, the electric push rod 11 does work, the piston end thereof drives the movable rod 8 to move downwards, and along with the downward movement of the movable rod 8, the conical block 9 is inserted into the first conical groove, so as to separate the die-casting raw material in the material storage pipe 7 from the die-casting die, and, when the conical block 9 moves down to block the first conical groove, a certain pressure is given to the raw material liquid, so that the die-casting raw material in the die-casting die is full, and the phenomenon of hollowing is avoided, meanwhile, because of the partition of the conical block 9, the raw material in the die-casting die is not connected with redundant die-casting raw material, after the die-casting raw material in the die-casting die is shaped, the surface of a workpiece is smooth and has no rough edge or burr, and the subsequent cleaning of workers is not needed, meanwhile, the storage pipe 7 stores the residual raw material in the feeding pipe 5, so that the raw material is not remained in the feeding pipe 5, and the burr on the next film workpiece is avoided, the electric heating wire 10 works to heat the movable rod 8, the heat is conducted to the die-casting raw materials stored in the storage pipe 7, so that the die-casting raw materials are always in a high-temperature environment and cannot be condensed, when the next die is die-cast, the electric push rod 11 works, the piston rod drives the movable rod 8 to move upwards, so that the blockage of the conical block 9 on the first conical groove is removed, the die-casting raw materials stored in the storage pipe 7 are circulated into the die-casting die through the feeding pipe 5 and are used for die-casting of the next die, and the whole structure of the device can convey partial raw materials into the feeding pipe 5 when a workpiece is die-cast, so that the raw materials in the die-casting die are fully filled, the die-casting quality of the workpiece is ensured, and meanwhile, the residual raw materials can be collected and stored and are used for die-casting of the next die.

As shown in fig. 2 and 5, in some embodiments, one side of the feeding pipe 5 is communicated with an air pipe 13, an end of the air pipe 13 is communicated with a vacuum pump 14, and one end of the air pipe 13, which is close to the feeding pipe 5, is provided with a valve, so that when a raw material is added, part of air also enters the feeding pipe 5, and the vacuum pump 14 is used for pumping out the air in the die-casting mold, thereby reducing the air in the die-casting mold, improving the die-casting effect, increasing the density of workpieces in the mold, and improving the quality of the workpieces after die-casting.

As shown in fig. 5 and 6, in some embodiments, a plurality of supporting columns 15 are disposed on a base 1, a lower mold 3 is disposed on the plurality of supporting columns 15, a plurality of through holes 16 movably penetrate through the bottom of the lower mold 3, a second hydraulic cylinder 17 is disposed on the base 1, a mounting plate 18 is disposed at a piston end of the second hydraulic cylinder 17, a plurality of pushing rods 19 are disposed on the mounting plate 18, free ends of the plurality of pushing rods 19 respectively movably penetrate through the plurality of through holes 16, before mold closing, the plurality of pushing rods 19 are respectively movably inserted into the plurality of through holes 16, and the free ends of the pushing rods 19 are flush with an inner bottom surface of the lower mold 3, so as to ensure flatness of a formed workpiece, after the formed workpiece is die-cast, after the upper mold 2 is driven away from the lower mold 3 by the first hydraulic cylinder 4, the second hydraulic cylinder 17 works, and the piston end thereof drives the mounting plate 18 to move upwards, so that the plurality of pushing rods 19 push the formed workpiece, so as to push the formed workpiece at one end position, so as to facilitate a worker to pick up and unload the workpiece, the number of the plurality of pushing rods 19 is a plurality of workpieces, which is not enough to ensure that the pressure of castings is not to be damaged on each casting piece, and each casting piece 19 is enough.

As shown in fig. 6, in some embodiments, the communication between the through hole 16 and the inner bottom surface of the lower mold 3 is configured to be conical, the free end of the push rod 19 is configured to have a conical head, the communication between the through hole 16 and the inner bottom surface of the lower mold 3 is configured to be conical, and the free end of the push rod 19 is configured to have a conical head, so that when the push rod 19 pushes a workpiece in one mold, the end of the push rod 19 can be quickly aligned with the inner bottom surface of the lower mold 3 again to facilitate die casting of the workpiece in the next mold.

As shown in fig. 1, 2, 5 and 6, in some embodiments, a post 20 is disposed on a base 1, a multi-stage telescopic rod 21 is disposed on the post 20, a circular tube 22 is disposed at a piston end of the multi-stage telescopic rod 21, a plurality of spray heads 23 are communicated with the circular tube 22 in an annular array, a delivery pipe 24 is communicated with the circular tube 22, a water flowing groove 25 is disposed on an outer side wall of a pushing rod 19, preferably, the delivery pipe 24 is connected with an external lubricant storage device, the plurality of spray heads 23 are divided into two groups and two groups, and the two groups are disposed on upper and lower sides of the circular tube 22 respectively, when a workpiece is die-cast and before an upper mold 2 and a lower mold 3 are assembled, the multi-stage telescopic rod 21 works, the piston end of the multi-stage telescopic rod pushes the circular tube 22 to a position between the upper mold 2 and the lower mold 3, lubricant in the external lubricant storage device is delivered into the circular tube 22 through the delivery pipe 24, and spraying by two groups of spray heads 23 and respectively spraying the inner cavities of the upper die 2 and the lower die 3, wherein before spraying, a second hydraulic cylinder 17 needs to be opened in advance, the second hydraulic cylinder 17 pushes the mounting plate 18 to move upwards, so that the push rod 19 slides along the through hole 16 for a certain distance, the water flowing groove 25 is communicated with the inner cavity of the lower die 3, and by spraying a lubricant to the inner cavities of the upper die 2 and the lower die 3, the lubricant can help to control the temperature of the die and also help to demould a casting, and the redundant lubricant after spraying is discharged out of the die-casting die through the water flowing groove 25, after the lubricant is sprayed, the push rod 19 is adjusted to close the through hole 16, and then the die is closed for die-casting operation, wherein in the actual production, one time of lubricant needs to be sprayed for each die-casting.

As shown in fig. 3 and 4, in some embodiments, the lifting mechanism 12 includes a mounting frame 1201, a lead screw 1202, a slide bar 1203, and a motor 1204, wherein: the mounting frame 1201 is arranged on the upper die 2, the lead screw 1202 rotates to penetrate through the mounting frame 1201, the sliding rod 1203 is arranged on the mounting frame 1201, the motor 1204 is arranged on the mounting frame 1201, an output shaft of the motor is fixedly connected with one end of the lead screw 1202, two support plates 1205 are arranged on the storage pipe 7, one support plate 1205 is in threaded sleeve connection with the lead screw 1202, the other support plate 1205 is in sliding sleeve connection with the sliding rod 1203, a through groove is formed in the mounting frame 1201 in a penetrating mode, the electric push rod 11 movably penetrates through the through groove, through the design of the through groove, when the storage pipe 7 is adjusted to move upwards, normal work of the electric push rod 11 cannot be affected, when the storage pipe 7 needs to be adjusted to ascend and descend, the motor 1204 does work, the output shaft of the motor drives the lead screw 1202 to rotate, due to the fact that one support plate 1205 is in threaded connection with the lead screw 1202, the other support plate 1205 is in sliding connection with the sliding rod 1203, therefore, when the lead screw 1202 rotates, the effect of driving the storage pipe 7 to ascend and descend is achieved.

As shown in fig. 4, in some embodiments, the movable bar 8 comprises a first strut 801 and a second strut 802, wherein: first branch 801 is connected with toper piece 9, the cavity is seted up in first branch 801, second branch 802 is connected with electric putter 11, be connected with connecting block 803 between first branch 801 and the second branch 802, for making the device more reasonable, preferably, first branch 801 adopts copper or aluminium material, make the heat conduction effect of first branch 801 better, second branch 802 adopts the extruded sheet material, the extruded sheet material is thermal-insulated, be connected the first branch 801 of two kinds of different materials with second branch 802 through connecting block 803 and form a movable rod 8, thereby be convenient for separate the high temperature that electric heater strip 10 produced, avoid high temperature to conduct to electric putter 11 through movable rod 8, in order to play the effect to electric putter 11 protection.

As shown in fig. 2, in some embodiments, two lug plates are configured on the lower mold 3, two guide rods 26 are disposed on the upper mold 2, and the two guide rods 26 respectively slide through the two lug plates, so that the upper mold 2 is guided by the sliding fit of the guide rods 26 with the lug plates, and the accuracy of closing the upper mold 2 and the lower mold 3 is also improved.

As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 7, the present invention further provides a process of a burr-free die-casting device for workpieces, which comprises the following steps:

s1: the two first hydraulic cylinders 4 do work, and the piston ends of the two first hydraulic cylinders contract to drive the upper die 2 to move downwards, so that the upper die 2 and the lower die 3 are buckled, and a complete die-casting die is formed;

s2: the lifting mechanism 12 drives the storage pipe 7 to ascend, the conical end of the storage pipe 7 is higher than the communication port of the pouring pipe 6 and the feeding pipe 5, then the die-casting raw materials are conveyed into the pouring pipe 6, the die-casting raw materials flow from the pouring pipe 6 to the feeding pipe 5 and flow into a complete die-casting die formed by buckling the upper die 2 and the lower die 3, and when the die-casting raw materials are filled in the die-casting die and overflow into the feeding pipe 5, the conveying of the die-casting raw materials is stopped;

s3: the electric push rod 11 works, the piston end of the electric push rod drives the movable rod 8 to move upwards, so that the conical block 9 is far away from the first conical groove, the lifting mechanism 12 drives the storage pipe 7 to move downwards, so that the conical end of the storage pipe 7 is movably inserted into a communication port between the feed pipe 5 and the upper die 2, redundant die-casting raw materials overflowing from the feed pipe 5 flow into the storage pipe 7 through the first conical groove, the electric push rod 11 works, the piston end of the electric push rod drives the movable rod 8 to move downwards, the conical block 9 is inserted into the first conical groove along with the downward movement of the movable rod 8, so that the die-casting raw materials in the storage pipe 7 and the die-casting raw materials in the die-casting die are separated, the die-casting raw materials in the die-casting die are filled, the redundant die-casting raw materials cannot be connected, and after the die-casting raw materials in the die-casting die are shaped, the surface of a workpiece is smooth and free of burrs;

s4: electric heating wire 10 does work for heat the movable rod 8, and with on the die-casting raw materials of heat conduction to storage pipe 7 internal storage, thereby make the die-casting raw materials be in the high temperature environment all the time, can not condense, when treating next mould die-casting, electric putter 11 does work, its piston rod drives movable rod 8 and shifts up, make and remove the shutoff of conical block 9 to first bell jar, the die-casting raw materials of storage pipe 7 internal storage circulate to die casting die in through inlet pipe 5 again, be used for next mould die-casting.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. A workpiece burr-free die-casting device comprises a base (1), an upper die (2) and a lower die (3), and is characterized in that the lower die (3) is arranged on the base (1), two first hydraulic cylinders (4) are arranged on the base (1), the upper die (2) is arranged at the piston ends of the two first hydraulic cylinders (4), and the upper die (2) and the lower die (3) are buckled to form a complete die-casting die;

the feeding device comprises a feeding pipe (5), one end of the feeding pipe is communicated with the upper die (2), a communication opening is in a conical structure, one side of the feeding pipe (5) is communicated with a pouring pipe (6), a storage pipe (7) with two closed ends is arranged in the feeding pipe (5) in a sliding mode, one end, located in the feeding pipe (5), of the storage pipe (7) is in a conical structure, and a first conical groove is formed in the conical end in a penetrating mode;

the movable rod (8) coaxially and movably penetrates through the material storage pipe (7), one end of the movable rod (8) is provided with a conical block (9) which is in plug fit with the first conical groove, a cavity is formed in the movable rod (8), an electric heating wire (10) is arranged in the cavity, an electric push rod (11) is arranged on the material storage pipe (7), and the piston end of the electric push rod (11) is fixedly connected with the other end of the movable rod (8);

the lifting mechanism (12) is arranged on the upper die (2) and is used for driving the storage pipe (7) to lift.

2. The die-casting device for the burr-free workpiece, as recited in claim 1, wherein a gas pipe (13) is connected to one side of the feed pipe (5), a vacuum pump (14) is connected to an end of the gas pipe (13), and a valve is disposed at one end of the gas pipe (13) close to the feed pipe (5).

3. The die-casting device for the burr-free workpiece, according to claim 1, is characterized in that a plurality of supporting columns (15) are arranged on the base (1), the lower die (3) is arranged on the plurality of supporting columns (15), a plurality of through holes (16) are movably arranged at the bottom of the lower die (3), a second hydraulic cylinder (17) is arranged on the base (1), a mounting plate (18) is arranged at the piston end of the second hydraulic cylinder (17), a plurality of pushing rods (19) are arranged on the mounting plate (18), and free ends of the plurality of pushing rods (19) respectively movably penetrate through the plurality of through holes (16).

4. A burr-free die-casting device for workpieces as recited in claim 3, characterized in that the communication between said through-hole (16) and the inner bottom surface of said lower die (3) is configured to be conical, and the free end of said push rod (19) is configured to be conical.

5. The workpiece burr-free die-casting equipment according to claim 4, wherein a post rod (20) is arranged on the base (1), a multi-stage telescopic rod (21) is arranged on the post rod (20), a circular tube (22) is arranged at a piston end of the multi-stage telescopic rod (21), a plurality of spray heads (23) are communicated with the circular tube (22) in an annular array, a conveying pipe (24) is communicated with the circular tube (22), and a water flowing groove (25) is formed in the outer side wall of the pushing rod (19).

6. The apparatus for burr-free die casting of workpieces as recited in claim 1, wherein said lifting mechanism (12) comprises a mounting frame (1201), a lead screw (1202), a slide bar (1203), and a motor (1204), wherein:

the mounting frame (1201) is arranged on the upper die (2), the screw rod (1202) is rotated to penetrate through the mounting frame (1201), the sliding rod (1203) is arranged on the mounting frame (1201), the motor (1204) is arranged on the mounting frame (1201), an output shaft of the motor is fixedly connected with one end of the screw rod (1202), two support plates (1205) are arranged on the storage pipe (7), one support plate (1205) is arranged on the screw rod (1202) in a threaded sleeve mode, and the other support plate (1205) is arranged on the sliding rod (1203) in a sliding sleeve mode.

7. The apparatus for die-casting a workpiece without burr according to claim 1, characterized in that said movable bar (8) comprises a first supporting bar (801) and a second supporting bar (802), wherein:

first branch (801) with toper piece (9) are connected, and the cavity is seted up in first branch (801), second branch (802) with electric putter (11) are connected, first branch (801) with be connected with connecting block (803) between second branch (802).

8. A device for diecasting a workpiece without burr as in claim 1, characterised in that said lower die (3) is provided with two lugs, and said upper die (2) is provided with two guide rods (26), said two guide rods (26) being slidably inserted through said two lugs, respectively.

9. The process of the workpiece burr-free die-casting equipment is characterized by comprising the following steps of:

s1: the two first hydraulic cylinders (4) do work, and the piston ends of the two first hydraulic cylinders shrink to drive the upper die (2) to move downwards, so that the upper die (2) is buckled with the lower die (3), and a complete die-casting die is formed;

s2: the storage pipe (7) is driven to ascend through the lifting mechanism (12), the conical end of the storage pipe (7) is higher than a communication opening of the pouring pipe (6) and the feeding pipe (5), then the die-casting raw materials are conveyed into the pouring pipe (6), the die-casting raw materials flow to the feeding pipe (5) from the pouring pipe (6) and then flow into a complete die-casting die formed by buckling the upper die (2) and the lower die (3), and when the die-casting raw materials are filled in the die-casting die and overflow into the feeding pipe (5), the conveying of the die-casting raw materials is stopped;

s3: the electric push rod (11) does work, the piston end of the electric push rod drives the movable rod (8) to move upwards, so that the conical block (9) is far away from the first conical groove, the lifting mechanism (12) drives the material storage pipe (7) to move downwards, so that the conical end of the material storage pipe (7) is movably inserted into a communication port between the material inlet pipe (5) and the upper die (2), redundant die-casting raw materials overflowing from the material inlet pipe (5) flow into the material storage pipe (7) through the first conical groove, the electric push rod (11) does work, the piston end of the electric push rod drives the movable rod (8) to move downwards, the conical block (9) is inserted into the first conical groove along with the downward movement of the movable rod (8), so that the die-casting raw materials in the material storage pipe (7) are separated from the die-casting raw materials in the die-casting die, the die-casting raw materials in the die-casting die are filled, the redundant die-casting raw materials cannot be connected, and after the die-casting raw materials in the die-casting die, the surface of a workpiece is smooth and free of shaping burrs;

s4: electric heating wire (10) acting for heat movable rod (8), and with heat conduction to the die-casting raw materials of storing in storage pipe (7), thereby make the die-casting raw materials be in under the environment of high temperature all the time, can not condense, when treating next mould die-casting, electric putter (11) acting, its piston rod drives movable rod (8) and shifts up, make and remove conical block (9) to the shutoff of first bell jar, the die-casting raw materials rethread inlet pipe (5) circulation of storing in storage pipe (7) is to die casting die in, be used for next mould die-casting.

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