Exhaust device and die casting device for a casting process

Abstract

The application provides an exhaust device and a die casting device for a casting process and relates to the technical field of casting equipment. The device comprises a first exhaust pipe, a connecting pipe connected to the first exhaust pipe, an inlet in the connecting pipe, a plug matched with the inlet, an elastic reset assembly connected to the plug, a piston cavity in the first exhaust pipe, a piston in the piston cavity, a power driving mechanism connected to the piston, an air outlet and an exhaust outlet in the piston cavity, the air outlet being connected to the connecting pipe, the exhaust outlet being close to the air outlet, the air outlet and the exhaust outlet being on the same side of the piston, and a one-way valve in the air outlet. The application has the effect that the air in the mold is quickly exhausted according to the working condition of the mold, the backflow of the air is avoided, the air in the mold cavity has no influence on the die casting product, the speed of the molding is accelerated, and the molding is completed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of casting equipment, in particular to an exhaust device for a casting process and a die casting device. BACKGROUND

[0002] The die casting mold is a method of casting liquid die forging, and is a process completed on a dedicated die casting forging machine. The principle of the die casting process is to use high pressure to press the metal liquid into a precise metal mold cavity at high speed, and the metal liquid is cooled and solidified under the action of pressure to form a casting.

[0003] Many die casting structural parts are included in the server structure, such as the front window, etc. Since it is an appearance surface, the appearance quality requirement is higher, and at present, exhaust must be carried out during the die casting process. The existing exhaust method is to directly process an exhaust groove on the mold. This method is the simplest and most commonly used way. The processing of the exhaust groove is usually to grind a certain depth of a shallow groove on the upper and lower mold joint surface of the mold. Generally, the groove is ground on the surface of the concave mold, and multiple exhaust grooves can also be ground according to the size of the mold. The metal liquid is pressed into a precise metal mold cavity at high speed, and then the air in the cavity is squeezed out along the exhaust groove during the process of mold forming and mold closing.

[0004] However, the above-mentioned existing exhaust groove setting method has the following defects: the exhaust groove is easy to block, and once it is blocked, it will affect the exhaust effect, and the product will produce air trapping and other appearance defects. The gas temperature discharged by the exhaust groove is high, and the gas directly discharged along the exhaust groove is easy to injure the operator; the mold needs to be cleaned frequently, which also affects the production efficiency and increases the labor cost. In addition, the existing exhaust groove setting method has a single technical structure, which cannot control the flow direction of the gas and is easy to cause gas backflow and other problems, and the existing exhaust groove setting method cannot guarantee the air tightness, which leads to poor exhaust. The above phenomena will affect the appearance of the product, resulting in poor product appearance. SUMMARY

[0005] The present application aims to solve the problem of poor product appearance caused by the defects in the above background technology of the existing exhaust method for the casting process of the server die casting structural part, and proposes and designs an exhaust device and a die casting device.

[0006] The technical scheme adopted by the present application to solve the above technical problems is: an exhaust device for a casting process, comprising a first exhaust pipe, a connecting pipe connected to the first exhaust pipe, an inlet of the connecting pipe, a plug matched with the inlet, an elastic reset assembly connected to the plug, the elastic reset assembly being capable of providing an elastic force to the plug to make the plug abut against the inlet and block the inlet, a piston cavity in the first exhaust pipe, a piston in the piston cavity, a power driving mechanism connected to the piston, an exhaust outlet and an air outlet in the piston cavity, the air outlet being communicated with the connecting pipe, the exhaust outlet being close to the air outlet and located on the same side of the piston as the air outlet, and a one-way valve in the air outlet. The connecting pipe is used to connect other exhaust structures on the mold. When air is exhausted from the mold cavity, the power driving mechanism drives the piston to move, the piston moves, the plug in the connecting pipe moves against the elastic force of the elastic reset assembly, the inlet is opened, the inlet, the air outlet and the piston cavity are communicated, the mold is communicated, air in the mold is exhausted, and the air is exhausted into the piston cavity. When air is exhausted from the piston cavity, the power driving mechanism drives the piston to move back, the elastic reset assembly drives the plug to block the inlet, the air in the piston cavity cannot return to the original position, cannot flow back to the mold, and can only be exhausted through the exhaust outlet. Because the one-way valve is arranged on the exhaust outlet, air can only flow out of the piston cavity and cannot flow into the piston cavity from the outside, so that air cannot flow into the piston cavity from the outside during the process of exhausting air from the mold, air in the mold is quickly exhausted, air backflow is avoided, the influence of air in the mold cavity on the die casting product is prevented, the speed of molding is accelerated, and the molding is completed, appearance defects caused by air that cannot be exhausted are avoided, the yield of the product is improved, and the production cost is reduced.

[0007] Further, the connecting pipe comprises a horizontal section and a vertical section, the inlet is located in the horizontal section, the vertical section is provided with a connecting pipe outlet, and the horizontal section and the vertical section have a non-zero corner angle, preferably 90 degrees in the present scheme. In other schemes, the corner angle between the horizontal section and the vertical section can also be an acute angle or an obtuse angle. The corner angle is arranged to facilitate the connection between the pipes and to change direction, reduce the space occupation in a certain direction, and more reasonably arrange the relationship between the structures.

[0008] Further, the gas outlet of the connecting pipe is provided with a plug matched therewith, and an elastic reset assembly of the plug is connected to the plug, which can provide an elastic force to the plug to make the plug abut against the gas outlet of the connecting pipe and block the gas outlet. The two ports are blocked, and the air tightness during air extraction and air exhaust is further enhanced, and the gas backflow is avoided, and the plug arranged in two different directions does not affect the connecting work of the connecting pipe in other directions.

[0009] Further, the elastic reset assembly of the plug comprises a reset spring, the connecting pipe is provided with a spring mounting groove, the reset spring is mounted in the spring mounting groove, one end of the reset spring abuts against the bottom of the spring mounting groove, and the other end of the reset spring acts on the plug. Specifically, the other end of the reset spring is provided with a sliding plate, one end of the reset spring abuts against the bottom of the spring mounting groove, the bottom of the spring mounting groove is provided with a hole, the gas circulation is not affected, the other end of the reset spring abuts against the sliding plate, the sliding plate is connected to the plug, the sidewall of the spring mounting groove is provided with a sliding groove, and both ends of the sliding plate are connected to the sliding groove, which plays a limiting and guiding role and ensures the smooth linear reciprocating movement of the sliding plate.

[0010] Further, the plug is in the shape of a pyramid or a cone, the gas inlet of the connecting pipe and the gas outlet of the connecting pipe are also in the shape of a pyramid or a cone, and are matched with the plug, the diameter size of the gas inlet gradually increases from the rear, the taper surfaces are matched, the plug is more suitable for abutting and blocking, the gas is more difficult to flow back from the gas outlet to the gas inlet, the backflow is avoided, and the air tightness is enhanced.

[0011] Further, the first exhaust pipe is provided with a driving mechanism mounting cavity, a partition plate is arranged between the driving mechanism mounting cavity and the piston cavity, the driving mechanism mounting cavity is separated from the piston cavity by the partition plate, and the power driving mechanism is arranged in the driving mechanism mounting cavity. The power driving mechanism comprises a motor, a gear, a sliding rod and a sliding block. Two guide rods are arranged in the driving mechanism mounting cavity. The sliding block is provided with holes on two sides, and the sliding block is slidingly mounted on the guide rods. The guide rods pass through the holes on the sliding block. The sliding block is provided with a tooth. The gear is engaged with the tooth on the sliding block. Specifically, the sliding block is provided with a mounting groove, the side wall of the mounting groove is provided with a tooth, and the gear is mounted in the mounting groove of the sliding block. The gear is a gear with only one side tooth, which is engaged with the tooth on one side of the side wall of the mounting groove, and does not affect the rotation of the gear to drive the sliding block to move. The motor is in transmission connection with the gear. The sliding rod is fixedly connected with the sliding block. The sliding rod is connected with the piston in the piston cavity after passing through the partition plate. The sliding rod passes through the partition plate, and the partition plate is provided with a hole. The hole can also play a limiting and guiding role in the sliding process of the sliding rod, so as to ensure the straight-line reciprocating motion of the sliding rod. The power driving mechanism is located below the piston. The exhaust port and the air suction port are located above the piston. The motor drives the gear to rotate, and then drives the sliding block to move, and drives the piston to move downward to perform the air suction action in the forward transmission. When reversed, the sliding block moves upward, and then drives the piston to move upward to perform the exhaust action. In some schemes, the power driving mechanism can be a screw nut transmission mechanism, a crank connecting rod transmission mechanism or a cam mechanism.

[0012] Generally, the exhaust method is realized by opening and closing the upper and lower molds. If the cavity surface is complex, air will be squeezed to the edge of the cavity during liquid metal injection, which will cause incomplete exhaust, air entrapment and product defects. It is not suitable for products with high size requirements, and the high-temperature liquid material may be discharged together with high-pressure gas during the exhaust process, causing splashing injury. In order to solve this problem, further improvement scheme is as follows: the exhaust device further comprises a second exhaust pipe, the connecting pipe is connected with the second exhaust pipe, the air inlet of the connecting pipe is arranged close to the second exhaust pipe, the second exhaust pipe is vertically arranged on the mold, a plurality of blocking plates are arranged in the second exhaust pipe, the blocking plates are arranged on both sides of the inner wall of the second exhaust pipe and opposite to each other, the blocking plates are arranged obliquely downward from one end of the inner wall of the second exhaust pipe to the center end, and the position where the connecting pipe is connected with the second exhaust pipe is higher than the arrangement position of the blocking plates. By arranging the blocking plates in the exhaust pipe, when the subsequent exhaust device starts to exhaust the air in the mold, the inclined blocking plates can resist the splashing of the injection liquid, effectively preventing the injection liquid from being discharged together with the air to cause injury, and avoiding the problem of metal liquid spattering and injuring people.

[0013] In another aspect, the application also provides a die casting device, comprising the exhaust device described above, the exhaust device being installed on a mold and being in communication with a cavity of the mold, and in particular, the second exhaust pipe being installed vertically on the mold.

[0014] Further, the mold is provided with a cold water pipe and a drain groove.

[0015] In order to solve the above problems, the further improvement scheme is that the bottom of the top base is provided with a wedge-shaped insertion rod, the wedge-shaped insertion rod is provided with a clamping groove, the upper part of the base is provided with a wedge-shaped groove, the inside of the base is provided with a locking rod, and the outer side end of the locking rod is provided with a second spring, so that the locking rod can be clamped in the clamping groove.

[0016] From the above technical solutions, the application has the following advantages:

[0017] 1. The exhaust device can exhaust air according to the working condition of the mold, so that the air in the mold is quickly exhausted and backflow is avoided, the air in the cavity of the mold does not affect the die casting product, the speed of forming is accelerated, the forming is completed, the appearance defect caused by the failure of air exhaust is avoided, the yield of the product is improved, and the production cost is reduced.

[0018] 2. By setting the blocking plate in the exhaust pipe, when the subsequent exhaust device starts to exhaust the air in the mold, the inclined blocking plate can resist the splashed injection liquid, effectively preventing the injection liquid from being discharged with the air to cause harm, avoiding the problem of metal liquid spouting to injure people.

[0019] 3. When the mold is installed in the middle of the base and the top seat, the connecting plate pushes the mold upward under the rebounding action of the first spring, and then the upper and lower parts of the mold structure are fitted more tightly, which can improve the air tightness of the device.

[0020] 4. The cold water pipe can be connected to the cold circulating water to cool the material in the mold, accelerate the speed of molding, reduce the cycle of product molding, and improve the production efficiency of the product.

[0021] 5. The connecting place of the wedge-shaped insertion rod and the clamping groove is inclined, when the mold is installed in the base and the top seat, the wedge-shaped insertion rod is clamped in the wedge-shaped slot, and then the wedge-shaped insertion rod connection lock rod forces the lock rod to move outward, when the wedge-shaped insertion rod is inserted in place, the lock rod is clamped into the clamping groove of the wedge-shaped insertion rod under the rebounding action of the second spring, which limits and fixes the wedge-shaped insertion rod, and then firmly clamps the top seat on the top of the base, so that the assembly and disassembly of the device are more convenient, which saves time and labor. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed to be used in the description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 It is a structural schematic diagram of the specific embodiment 1 of the present application.

[0024] Figure 2 It is a structural schematic diagram of the connecting pipe in the specific embodiment 1 of the present application.

[0025] Figure 3 It is a structural schematic diagram showing the action principle of the first exhaust pipe piston in the specific embodiment 1 of the present application.

[0026] Figure 4 It is a schematic diagram of the split structure of the specific embodiment 2 of the present application.

[0027] In the diagram, 1. Base, 2. Top seat, 3. Mold, 4. Connecting plate, 5. Cold water pipe, 6. Wedge-shaped insert, 7. Wedge-shaped groove, 8. Locking rod, 9. Slot, 10. Pull ring, 11. Second exhaust pipe, 12. Baffle plate, 13. Connecting pipe, 14. First exhaust pipe, 15. Connecting pipe air inlet, 16. Plug, 17. Slide plate, 18. Return spring, 19. Connecting pipe air outlet, 20. Air extraction port, 21. Piston chamber, 22. Piston, 23. Slide rod, 24. Partition plate, 25. Guide rod, 26. Exhaust port, 27. One-way valve, 28. Gear, 29. Gear, 30. Slider. Detailed Implementation

[0028] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent. Furthermore, the technical features involved in the different embodiments of this invention described below can be combined with each other as long as they do not conflict with each other. Detailed Implementation Method 1

[0030] like Figures 1 to 3 As shown, this specific embodiment provides an exhaust device for a casting process, including a first exhaust pipe 14, a connecting pipe 13 connected to the first exhaust pipe 14, a connecting pipe inlet 15 provided in the connecting pipe 13, a plug 16 adapted to the connecting pipe inlet 15, a plug elastic reset component connected to the plug 16, the plug elastic reset component can provide an elastic force to the plug 16 so that the plug 16 presses against the connecting pipe inlet 15 and blocks the connecting pipe inlet 15; the first exhaust pipe 14 has a piston chamber 21, a piston 22 provided in the piston chamber 21, a power drive mechanism connected to the piston 22, the piston chamber 21 is provided with an air intake port 20 and an exhaust port 26, the air intake port 20 connects the piston chamber 21 to the connecting pipe 13, the exhaust port 26 is close to the air intake port 20, and the exhaust port 26 and the air intake port 20 are located on the same side of the piston 22, the air intake port 20 is provided with a one-way valve 27.

[0031] Among them, see Figure 2The adapter 13 comprises a horizontal section and a vertical section, the adapter air inlet 15 is located on the horizontal section, the vertical section is provided with an adapter air outlet 19, and the horizontal section and the vertical section have a corner which is not zero, and the corner is preferably 90 degrees in the scheme, and in other schemes, the corner between the horizontal section and the vertical section can also be an acute angle or an obtuse angle, and the corner is arranged at an angle so as to facilitate the connection between pipes and the change of direction, reduce the space occupation in a certain direction, and more reasonably arrange the relationship between structures. The adapter air outlet 19 is provided with a plug 16 matched therewith, the plug 16 is connected with a plug elastic reset assembly, the plug elastic reset assembly can provide an elastic force to the plug 16 so that the plug 16 abuts against the adapter air outlet 19 and blocks the adapter air outlet 19, the two openings are blocked, the air tightness during air extraction and air exhaust is further improved, backflow of gas is avoided, and the plug 16 arranged in two different directions does not affect the connection work of the adapter 13 in other directions. The plug elastic reset assembly comprises a reset spring 18, the adapter 13 is provided with a spring mounting groove, the reset spring 18 is mounted in the spring mounting groove, one end of the reset spring 18 abuts against the bottom of the spring mounting groove, and the other end of the reset spring 18 acts on the plug 16. Specifically, the other end of the reset spring 18 is provided with a sliding plate 17, one end of the reset spring 18 abuts against the bottom of the spring mounting groove, the bottom of the spring mounting groove has a hole which does not affect the flow of gas, the other end of the reset spring 18 abuts against the sliding plate 17, the sliding plate 17 is connected with the plug 16, the side wall of the spring mounting groove is provided with a sliding groove, and the two ends of the sliding plate 17 are connected to the sliding groove, so as to play a limiting and guiding role and ensure the smooth linear reciprocating movement of the sliding plate 17. The plug 16 is in the shape of a pyramid or a cone, the adapter air inlet 15 and the adapter air outlet 19 are also in the shape of a pyramid or a cone, are matched with the plug 16, and gradually increase in size from the diameter of the air inlet end to the rear, are matched with a taper surface, are more suitable for close blocking, gas is more difficult to flow back from the air outlet end to the air inlet end, backflow is avoided, and the air tightness is improved.

[0032] Referring to Figure 3In some preferred embodiments, the first exhaust pipe 14 is provided with a driving mechanism mounting cavity, a partition plate 24 is arranged between the driving mechanism mounting cavity and the piston cavity 21, the driving mechanism mounting cavity is separated from the piston cavity 21 by the partition plate 24, and a power driving mechanism is arranged in the driving mechanism mounting cavity. The power driving mechanism includes a motor, a gear 29, a sliding rod 23 and a sliding block 30. The driving mechanism mounting cavity is provided with two guide rods 25, the sliding block 30 is provided with holes on both sides, the sliding block 30 is slidingly installed on the guide rods 25, the guide rods pass through the holes on the sliding block 30, the sliding block 30 is provided with teeth 28, the gear 29 is engaged with the teeth 28 on the sliding block 30, specifically, the sliding block 30 is provided with a mounting groove, the side wall of the mounting groove is provided with the teeth 28, the gear 29 is installed in the mounting groove of the sliding block 30, the gear 29 is a gear with only one side teeth 28, which is engaged with the teeth 28 on one side of the side wall of the mounting groove and does not affect the rotation of the gear 29 to drive the sliding block 30 to move, the motor is in transmission connection with the gear 29, the sliding rod 23 is fixedly connected with the sliding block 30, the sliding rod 23 is connected with the piston 22 in the piston cavity 21 after passing through the partition plate 24, the sliding rod 23 passes through the partition plate 24, the partition plate 24 is provided with holes, which can also play a limiting and guiding role in the sliding process of the sliding rod 23, so as to ensure the straight-line reciprocating motion of the sliding rod 23, the power driving mechanism is located below the piston 22, the exhaust port 26 and the suction port 20 are both located above the piston 22, the motor drives the gear 29 to rotate, and then the sliding block 30 moves, and in the forward transmission, the sliding block 30 moves downward to drive the piston 22 to move downward, and the suction action is performed, and in the reverse rotation, the sliding block 30 moves upward to drive the piston 22 to move upward, and the exhaust action is performed. In some schemes, the power driving mechanism can be a lead screw nut transmission mechanism, a crank connecting rod transmission mechanism or a cam mechanism.

[0033] The general exhaust method is realized by opening and closing the upper and lower molds. If the cavity surface is complex, air is squeezed to the edge of the cavity during liquid metal injection, which can cause incomplete exhaust, air entrapment, product defects, and is not suitable for high product size requirements. At the same time, during the exhaust process, the liquid high-temperature material may be discharged together with the high-pressure gas, which can cause splashing injury. In order to solve this problem, further improvement scheme is that the exhaust device further includes a second exhaust pipe 11, a connecting pipe 13 connected with the second exhaust pipe 11, and a connecting pipe air inlet 15 arranged close to the second exhaust pipe 11. The second exhaust pipe 11 is vertically arranged on the mold 3, and a plurality of blocking plates 12 are arranged in the second exhaust pipe 11. The plurality of blocking plates 12 are arranged on both sides of the inner wall of the second exhaust pipe 11, and the blocking plates 12 on both sides are arranged opposite to each other. The blocking plates 12 are arranged obliquely downward from one end of the inner wall of the second exhaust pipe 11 to the center end. The connecting pipe 13 is connected with the second exhaust pipe 11 at a position higher than the arrangement position of the blocking plates 12. By arranging the blocking plates 12 in the exhaust pipe, when the subsequent exhaust device starts to exhaust the air in the mold 3, the inclined blocking plates 12 can resist the splashing of the injection molding liquid, effectively preventing the injection molding liquid from being discharged together with the air to cause injury, and avoiding the problem of metal liquid spouting to cause injury.

[0034] The working principle is that the connecting pipe 13 is used to connect other exhaust structures on the mold 3. When the air in the mold 3 cavity is exhausted, the power driving mechanism drives the piston 22 to move. The piston 22 moves, which makes the plug 16 in the connecting pipe 13 move against the elastic force of the elastic reset assembly, thereby opening the connecting pipe air inlet 15. The connecting pipe air inlet 15, the air outlet 20 and the piston cavity 21 are communicated, and are communicated with the inside of the mold 3, thereby extracting the gas in the mold 3 into the piston cavity 21. When exhausting, the power driving mechanism drives the piston 22 to move back, and the plug elastic reset assembly drives the plug 16 to block the connecting pipe air inlet 15, thereby making the gas extracted into the piston cavity 21 unable to return to the original route, and also unable to flow back to the mold 3. Only the gas can be discharged through the exhaust port 26. Because the one-way valve 27 is arranged on the exhaust port 26, only the gas can flow outward from the piston cavity 21, but cannot flow from the outside to the piston cavity 21. Therefore, the gas cannot flow from the outside to the piston cavity 21 during the process of exhausting the gas from the mold 3 by the piston 22. Thus, the gas in the mold 3 can be extracted according to the working condition of the mold 3, the gas in the mold 3 can be quickly exhausted, and the backflow of the gas can be avoided. The air in the mold 3 cavity can be prevented from affecting the die casting product, and the speed of molding can be accelerated, thereby completing the molding and avoiding the appearance defects caused by the air that cannot be exhausted.

[0035] Specifically, the method 2

[0036] As Figure 4As shown, the specific embodiment provides a die-casting device, which includes the exhaust device in the specific embodiment 1, the exhaust device is installed on the mold 3 and communicates with the cavity of the mold 3, and specifically, the second exhaust pipe 11 is vertically installed on the mold 3. It also includes a base 1, the top of the base 1 is provided with a top seat 2, the middle of the base 1 and the top seat 2 is provided with a mold 3, the mold 3 includes a split upper and lower structure, the base 1 and the top seat 2 have a mounting groove matched with the mold 3, the base 1 is provided with a connecting plate 4, the connecting plate 4 is located at the lower part of the mold 3, the connecting plate 4 is connected with a first spring, the first spring is vertically arranged, the upper end of the first spring abuts against the connecting plate 4, and the lower end of the first spring abuts against the base 1. The connecting plate 4 is provided with the first spring in the inside of the base 1, when the mold 3 is installed in the middle of the base 1 and the top seat 2, the connecting plate 4 is upwardly pressed against the mold 3 under the rebounding action of the first spring, and then the upper and lower structures of the mold 3 are more tightly fitted, which can improve the air tightness of the device.

[0037] In some embodiments, the mold 3 is provided with a cold water pipe 5 and a drainage groove, the cold water pipe 5 can be connected with cold circulating water to cool the material in the mold 3, accelerate the speed of forming, reduce the cycle of product forming, and improve the production efficiency of the product.

[0038] Once the above problems are repaired, the assembly and disassembly of the exhaust device are also relatively cumbersome, which can cause the increase of production time and labor cost. In order to solve the problem, the further improvement scheme is that the top seat 2 is provided with a bottom provided with a wedge-shaped insertion rod 6, the wedge-shaped insertion rod 6 is provided with a clamping groove 9, the upper part of the base 1 is provided with a wedge-shaped groove 7, the inside of the base 1 is provided with a locking rod 8, and the outside end of the locking rod 8 is provided with a second spring, so that the locking rod 8 can be clamped in the clamping groove 9. The connection between the wedge-shaped insertion rod 6 and the clamping groove 9 is inclined, when the mold 3 is installed in the base 1 and the top seat 2, the wedge-shaped insertion rod 6 is clamped in the wedge-shaped groove 7, and then the wedge-shaped insertion rod 6 is connected with the locking rod 8 to force the locking rod 8 to move outward, when the wedge-shaped insertion rod 6 is inserted in place, the locking rod 8 is clamped in the clamping groove 9 of the wedge-shaped insertion rod 6 under the rebounding action of the second spring, the wedge-shaped insertion rod 6 is limited and fixed, and then the top seat 2 is clamped on the top of the base 1, so that the assembly and fixation can be completed. In addition, the outside of the base 1 is provided with a pull ring 10, the pull ring 10 is connected with the wedge-shaped insertion rod 6, when the base 1 and the top seat 2 are to be disassembled, the worker only needs to pull the wedge-shaped insertion rod 6 outward by using a tool to release the limiting and fixation of the wedge-shaped insertion rod 6.

[0039] The terms "upper," "lower," "inner," "outer," and the like, if used, are used only to describe iocations on the devices and are not to be construed as limiting. It will be understood that the data used herein is for purposes of example only and that modifications can be made by those skilled in the art, neveriheless, without departing from the spirit of the application. It is also to be understood that the following description is only one of the various alternatives. For example, the steps recited in any of the processes can be executed in different order. Accordingly, the application is not to be construed as limited to the processes described herein.

[0040] In the description of the present application, it is to be understood that the terms "mounting", "connected", "connecting" should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through intermediate medium, can also be the communication between the internal elements of two components, can be wireless connection, can also be wired connection. For the ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] The above description of disclosed embodiments provides enabling or useful guidance to those skilled in the art to make or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An exhaust device for a casting process, comprising a first exhaust pipe, wherein a connecting pipe is connected to the first exhaust pipe, and the connecting pipe has an air inlet, characterized in that, The air inlet of the connector is provided with a plug that is compatible with it. A plug elastic reset component is connected to the plug. The plug elastic reset component can give the plug an elastic force so that the plug presses against the air inlet of the connector and blocks the air inlet of the connector. The first exhaust pipe has a piston chamber, in which a piston is disposed, and a power drive mechanism is connected to the piston; The piston chamber is provided with an air intake port and an air exhaust port. The air intake port connects the piston chamber to the connecting pipe. The air exhaust port is close to the air intake port and the air exhaust port is located on the same side of the piston. The air exhaust port is provided with a one-way valve. The pipe includes a horizontal section and a vertical section, with the air inlet of the pipe located in the horizontal section and the air outlet of the pipe provided in the vertical section. There is a non-zero angle between the horizontal segment and the vertical segment; The air outlet of the connector is provided with a plug that is compatible with it. A plug elastic reset component is connected to the plug. The plug elastic reset component can give the plug an elastic force so that the plug presses against the air outlet of the connector and blocks the air outlet of the connector, without affecting the connection work of the connector in other directions. The first exhaust pipe is provided with a drive mechanism mounting cavity, and a partition is provided between the drive mechanism mounting cavity and the piston cavity. The partition separates the drive mechanism mounting cavity from the piston cavity, and the power drive mechanism is arranged in the drive mechanism mounting cavity. The power drive mechanism includes a motor, gears, a slide bar, and a slider. A guide rod is provided in the mounting cavity of the drive mechanism. There are two guide rods. Holes are provided on both sides of the slider. The slider is slidably mounted on the guide rods. The guide rods pass through the holes on the slider. The slider is provided with teeth, and the gear meshes with the teeth on the slider; The slider is provided with a mounting groove, and the side wall of the mounting groove is provided with teeth. The gear is installed in the mounting groove of the slider. The gear is a gear with only one side teeth, which meshes with the teeth on one side of the side wall of the mounting groove. The motor is connected to the gear transmission, the slide rod is fixedly connected to the slider, and the slide rod passes through the partition and is connected to the piston in the piston chamber; The power drive mechanism is located below the piston, and the exhaust port and the intake port are both located above the piston; The motor drives the gear to rotate, which in turn moves the slider. When rotating forward, the slider moves downward, which in turn moves the piston downward to perform the air extraction action. When rotating in reverse, the slider moves upward, which in turn moves the piston upward to perform the air exhaust action. It also includes a second exhaust pipe, the connecting pipe is connected to the second exhaust pipe, the air inlet of the connecting pipe is arranged close to the second exhaust pipe, the second exhaust pipe is provided with a plurality of baffles, the plurality of baffles are arranged on both sides of the inner wall of the second exhaust pipe and the baffles on both sides are arranged opposite each other, the baffles are arranged inclined downward from one end of the inner wall of the second exhaust pipe towards the center, and the position of the connection between the connecting pipe and the second exhaust pipe is higher than the arrangement position of the baffles; The plug elastic reset assembly includes a reset spring. A spring mounting groove is provided on the connecting pipe, and the reset spring is installed in the spring mounting groove, with one end of the reset spring abutting the bottom of the spring mounting groove. A sliding plate is provided at the other end of the reset spring, connecting the sliding plate to the plug, and the reset spring acts on the plug through the sliding plate. A groove is provided on the side wall of the spring mounting groove, and both ends of the sliding plate are connected to the groove, serving as a limit and guide to ensure that the sliding plate moves linearly back and forth within the spring mounting groove. The bottom of the spring mounting groove has a hole. The plug is shaped like a frustum or a cone, and the air inlet and outlet of the connecting pipe are also shaped like a frustum or a cone to fit the plug, with the diameter increasing from the air inlet end to the outlet.

2. A die-casting apparatus, characterized in that, Includes the exhaust device as described in claim 1, wherein the exhaust device is installed on the mold and communicates with the cavity of the mold, and the second exhaust pipe is vertically installed on the mold; It also includes a base, a top seat is installed on the top of the base, and a mold is installed between the base and the top seat. The mold includes upper and lower parts that can be assembled. The base and the top seat have mounting grooves that are adapted to the mold. A connecting plate is provided in the base, the connecting plate is located at the lower part of the mold, and a first spring is connected to the connecting plate. The first spring is arranged vertically, the upper end of the first spring abuts against the connecting plate, and the lower end of the first spring abuts against the base.

3. The die-casting apparatus as described in claim 2, characterized in that, The mold is equipped with a cold water pipe and a drainage channel.

4. The die-casting apparatus as described in claim 2, characterized in that, The top seat is provided with a wedge-shaped insert rod at the bottom, and the wedge-shaped insert rod is provided with a slot. The upper part of the base is designed with a wedge-shaped groove. The base is equipped with a locking rod inside, and a second spring is installed on the outer end of the locking rod.

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