A feed port connection structure for a magnesium alloy semi-solid process for a cold chamber die casting machine

Abstract

The utility model belongs to the technical field of cold chamber die-casting machines for metal forming, and particularly relates to a feed port connection structure for a semi-solid process of a magnesium alloy used in a cold chamber die-casting machine. The utility model provides a feed port connection structure for a semi-solid process of a magnesium alloy used in a cold chamber die-casting machine, which includes a discharge device arranged on the discharge port of a slurry barrel, a feed device arranged between the discharge device and the barrel feed port, the feed device includes a barrel transition sleeve arranged on the barrel feed port and extending toward the discharge device, and an adaptive connection section for connecting the barrel transition sleeve and the discharge device, so that: the utility model can realize the slurry conveying in a sealed state, avoiding the influence of the external environment on the slurry, and is particularly suitable for magnesium alloy semi-solid slurry; further, the adaptive connection section can withstand the connection position deviation caused by the external force, and improve the stability of the overall sealing structure and the equipment life.

Description

Technical Field

[0001] The utility model belongs to the technical field of cold chamber die casting machines for metal forming, in particular to a feed port connection structure of a magnesium alloy semi-solid process for a cold chamber die casting machine. Background Art

[0002] In the prior art, cold chamber die casting machines for magnesium alloy products generally use conventional barrels and dosing furnaces. The dosing furnace prepares high-temperature magnesium alloy melt, and then the melt is poured into the cold chamber die casting machine barrel from the barrel feed port through the slurry outlet of the dosing furnace. The entire process is not heat-insulated and sealed, and vacuum treatment is not possible, which will cause the magnesium alloy melt to react with air. Therefore, the existing conventional connection structure cannot be used for the storage and transportation of semi-solid slurry.

[0003] A Chinese utility model patent with patent announcement number CN215237696U and announcement date 2021.12.21 discloses a feeding device for a cold chamber die-casting machine, including a heating bin, a horizontal channel and a vertical channel; the heating bin is used for molten metal, and a discharge port is provided at the lower end of the side of the heating bin; one end of the horizontal channel is connected to the discharge port, and the other end of the horizontal channel is connected to the vertical channel; the vertical channel is vertically arranged, and a feeding port is provided at the lower end of the vertical channel; the inner diameter of the feeding port gradually decreases from top to bottom.

[0004] The Chinese utility model patent discloses a feeding device for a cold chamber die-casting machine, and its general usage and advantages are as follows: the feeding device for the cold chamber die-casting machine heats and melts the metal through a heating bin, and the molten metal passes through a horizontal channel and a vertical channel in sequence from a discharge port, and finally flows from a feeding port to an injection port of the cold chamber die-casting machine, integrating heating and feeding functions; replacing the existing transportation method of manually transferring from a melting furnace to an injection port, reducing the threat posed by high-temperature metal liquid to the health safety of workers, and reducing the work intensity of workers.

[0005] However, during actual use, the feeding device of the cold chamber die-casting machine still has at least the following shortcomings, in other words, they are the technical problems to be solved by the present invention: although the feeding device of the cold chamber die-casting machine can realize automatic heating and feeding without manual operation, its feeding trough is not sealed, and the overall device has a large risk of air leakage, and cannot be used for the slurry delivery of semi-solid magnesium alloys, and the flow channel is arranged in two sections with different directions, which greatly affects the slurry delivery efficiency.

[0006] Therefore, in summary, there is an urgent need for a feeding structure with stronger sealing and improved transmission efficiency to solve such problems. Utility Model Content

[0007] The utility model provides a feed port connection structure for a semi-solid process of a magnesium alloy for a cold chamber die-casting machine, which comprises a discharge device arranged on the discharge port of a slurry barrel, a feed device arranged between the discharge device and the barrel feed port, the feed device comprising a barrel transition sleeve arranged on the barrel feed port and extending toward the discharge device, and an adaptive connection section for connecting the barrel transition sleeve and the discharge device, so that: the utility model can realize the slurry conveying in a sealed state, avoiding the influence of the external environment on the slurry, and is particularly suitable for magnesium alloy semi-solid slurry; further, the adaptive connection section can withstand the connection position deviation caused by the action of external force, thereby improving the stability of the overall sealing structure and the equipment life.

[0008] The technical solution adopted by the utility model to solve the above-mentioned problems is: a feed port connection structure for a semi-solid process of magnesium alloy for a cold chamber die-casting machine, comprising a discharge device arranged on the discharge port of a slurry barrel, a feed device arranged on the discharge device and connected to the feed port of a barrel; the feed device comprises a barrel transition sleeve arranged on the feed port of the barrel and extending toward the discharge device, and an adaptive connecting section arranged on the barrel transition sleeve near the end of the discharge device and connected to the discharge device.

[0009] A further preferred technical solution is that the adaptive connecting section includes a bellows, a fixed plate arranged at the end of the bellows, a clamping hole arranged on the fixed plate and having an interference fit with the end of the discharging device, and a first connecting plate arranged on the outside of the end of the bellows away from the fixed plate and used to connect with the barrel transition sleeve.

[0010] A further preferred technical solution is that the discharging device includes a discharging cylinder arranged on the discharging port of the slurry cylinder and connected with the adaptive connecting section to form a slurry flow channel, and an electric heating ring arranged on the peripheral side of the discharging cylinder.

[0011] A further preferred technical solution is that the discharging device further includes a temperature sensor arranged in the discharging barrel.

[0012] A further preferred technical solution is that an annular groove for interference fit with the clamping hole is provided on the outer side of the end wall of the discharge barrel close to the adaptive connecting section.

[0013] A further preferred technical solution is that the discharge barrel is tiltedly arranged on the discharge port of the pulping barrel, and the discharge nozzle of the discharge barrel extends to the interior of the barrel transition sleeve.

[0014] A further preferred technical solution is that the discharge barrel also includes a threaded section arranged on the end barrel wall away from the adaptive connecting section and connected to the pulping barrel, and a convex ring arranged on the barrel wall of the discharge barrel and forming a groove with the adaptive connecting section for limiting the electric heating ring.

[0015] A further preferred technical solution is that the feeding device also includes a second connecting plate which is arranged on the barrel transition sleeve and is bolted to the first connecting plate.

[0016] A further preferred technical solution is that the feeding device further includes a sealing ring arranged between the first connecting plate and the second connecting plate.

[0017] Another object of the present invention is to provide a cold chamber die-casting machine for semi-solid magnesium alloys, comprising a feed port connection structure for a cold chamber die-casting machine for a semi-solid process of magnesium alloys as described in any one of the above.

[0018] A further preferred technical solution is that the pulping cylinder discharge port and the barrel feed port are arranged tilted, and the tilt angle is consistent with that of the discharge device and the feed device.

[0019] A further preferred technical solution is that an internal thread matching the threaded section is provided at the connection of the pulping cylinder discharge port.

[0020] A further preferred technical solution is that a special-shaped groove adapted to the shape of the second connecting plate is provided on the outer side of the barrel wall near the feed port, and a section parallel to the surface of the first connecting plate near the second connecting plate is also provided on the outer side of the barrel wall near the feed port. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall schematic diagram of the utility model;

[0022] Figure 2 It is a partial cross-sectional view of the utility model;

[0023] Figure 3 It is a partial cross-sectional view of the utility model;

[0024] Figure 4 It is a structural front view of the utility model;

[0025] Figure 5 It is a partial schematic diagram of the utility model;

[0026] Figure 6 It is an overall top view of the utility model.

[0027] In the figure, the meanings of the reference numerals are as follows:

[0028] Slurry cylinder a, machine cylinder b, slurry flow channel c;

[0029] Discharging device 1, feeding device 2;

[0030] Discharging barrel 11, electric heating ring 12, temperature sensor 13, barrel transition sleeve 21, adaptive connecting section 22, second connecting plate 23, sealing ring 24;

[0031] The annular groove 111 , the threaded section 112 , the convex ring 113 , the bellows 221 , the fixing plate 222 , the pressing hole 223 , and the first connecting plate 224 . DETAILED DESCRIPTION

[0032] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. The following description is only a preferred embodiment of the present invention and does not limit the scope of the present invention.

[0033] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0034] Embodiment 1

[0035] As attached Figure 1-6 As shown, a feed port connection structure for a semi-solid process of magnesium alloy for a cold chamber die-casting machine includes a discharge device 1 arranged on the discharge port of a slurry barrel a, and a feed device 2 arranged on the discharge device 1 and connected to the feed port of a barrel b; the feed device 2 includes a barrel transition sleeve 21 arranged on the feed port of the barrel b and extending toward the discharge device 1, and an adaptive connecting section 22 arranged on the barrel transition sleeve 21 near the end of the discharge device 1 and connected to the discharge device 1.

[0036] In this embodiment, the general method of using the feed port connection structure of the cold chamber die casting machine for magnesium alloy semi-solid process is as follows:

[0037] After the slurry is prepared by the pulping cylinder a, it enters the discharge device 1 through the discharge port, and the slurry enters the feeding device 2 through the discharge device 1. One end of the adaptive connecting section 22 is connected to the discharge device 1 and the other end is connected to the barrel transition sleeve 21, so that the discharge device 1 has sufficient sealing at the connection where it extends into the barrel transition sleeve 21. The adaptive connecting section 22 is preferably made of flexible material or a material that can deform to a certain extent when subjected to stress and can restore to its original shape when the stress disappears, such as flexible materials such as rubber, plastic, silicone, etc., to ensure that the connection structure can quickly adapt to and adjust the deviation caused by the angle when the positions of the pulping cylinder a and the barrel b shake relative to each other, so as to avoid leakage of the slurry; the barrel transition sleeve 21 and the feeding port of the barrel b are cold-fitted to achieve interference fit, and the front end of the pulping cylinder a is fixed to the head plate module by bolts to enhance the stability of the connection structure.

[0038] In this embodiment, the discharging device 1 includes a discharging barrel 11 which is arranged on the discharge port of the slurry barrel a and is connected with the adaptive connecting section 22 to form a slurry flow channel c, an electric heating ring 12 arranged on the peripheral side of the discharging barrel 11, and a temperature sensor 13 arranged inside the discharging barrel 11.

[0039] Among them, the discharging device 1 is divided into two parts according to the function. The discharging barrel 11 is used to connect with the discharging port of the slurry making barrel a to form a slurry flow channel c. The electric heating coil 12 surrounds the circumference of the discharging barrel 11 to maintain the temperature of the slurry during the discharging process and maintain the semi-solid state. The discharging barrel 11 is preferably a nozzle structure, and the electric heating coil 12 can be a spring heating coil, an electromagnetic heating coil, and other forms that can be attached to the wall of the discharging barrel 11. The temperature sensor 13 is set on the inner wall of the discharging barrel 11 to monitor the temperature of the slurry and issue a warning in time, and the electric control heating coil 12 makes feedback and adjustments.

[0040] As a further preferred embodiment of the present invention, the adaptive connection section 22 includes a bellows 221, a fixing plate 222 disposed at the end of the bellows 221, a clamping hole 223 disposed on the fixing plate 222 and interference-fitted with the end of the discharge device 1, and a first connection plate 224 disposed on the outer side of the end of the bellows 221 away from the fixing plate 222 and used to be connected to the barrel transition sleeve 21. At the same time, an annular groove 111 for interference-fitting with the clamping hole 223 is disposed on the outer side of the end barrel wall of the discharge barrel 11 close to the adaptive connection section 22; the feeding device 2 also includes a second connection plate 23 disposed on the barrel transition sleeve 21 and bolted to the first connection plate 224, and a sealing ring 24 disposed between the first connection plate 224 and the second connection plate 23.

[0041] In this embodiment, in order to further enhance the sealing performance and avoid air leakage caused by the connection, it is preferred that a plurality of sealing rings 24 are also provided at the bolt connection.

[0042] In this embodiment, a specific structure of the adaptive connecting section 22 is disclosed, wherein the bellows 221 is used to withstand axial, radial and angular deviations, absorb the thermal expansion deformation of the barrel b or the impact vibration caused by the injection process, so as to ensure the sealing of the overall structure during application; the upper end of the bellows 221 is fixedly connected with a fixing plate 222, and the discharge port of the discharge device 1 is pressed into the clamping hole 223 on the fixing plate 222 to achieve sealing by interference fit, and a first connecting plate 224 is arranged on the outer side of the lower end of the bellows 221, and a second connecting plate 23 is formed on the upper end of the barrel transition sleeve 21, both of which are preferably flange plates, and the connection structure between the two is stable, which is used to stabilize the position of the bellows 221, and at the same time, the adaptive connecting section 22 can be detachably connected to the barrel transition sleeve 21, which is convenient for later maintenance and replacement; the annular groove 111 and the surface of the fixing plate 222 stop each other, and the groove body further increases the difficulty of gas flowing into the clamping hole 223, and also avoids the obvious gap between the discharge barrel 11 and the clamping hole 223 when shaking occurs.

[0043] In this embodiment, the discharge barrel 11 further includes a threaded section 112 disposed on the end barrel wall away from the adaptive connection section 22 and connected to the pulping barrel a, and a convex ring 113 disposed on the barrel wall of the discharge barrel 11 and forming a groove with the adaptive connection section 22 for limiting the electric heating coil 12. An internal thread adapted to the threaded section 112 is disposed at the connection of the discharge port of the pulping barrel a.

[0044] In this embodiment, a threaded section 112 is provided at the connection between the upper end of the discharge barrel 11 and the pulping barrel a, and an internal thread matched with the threaded section 112 is provided in the discharge port, so that the upper end of the discharge barrel 11 is pressed into the barrel by interference fit and has a threaded connection to ensure its stability. A convex ring 113 is provided at the lower end of the threaded section. On the one hand, it limits the shaking range of the pulping barrel a to avoid excessive displacement and cause disconnection of the connection. On the other hand, a groove is formed between the fixing plate 222 of the adaptive connecting section 22 to limit the position of the electric heating coil 12. In actual applications, the position of the electric heating coil 12 can be fixed without gluing or other connection methods according to the situation.

[0045] Compared with the prior art, the advantages of this embodiment are: First, the connection structure described in the present application is closed as a whole, which prevents the slurry from contacting with the outside air or impurities, improves the quality of the slurry and the product, and can be used not only for the transmission of general slurry, but also for the transmission of semi-solid magnesium alloys; Second, the adaptive connection section can withstand the impact force from multiple directions and the influence of high temperature deformation on the connection structure, absorb vibration while ensuring the airtightness of the connection structure in the active state; Third, the present application also includes components for monitoring and controlling the temperature of the slurry, which further ensures the stability of the slurry during the transportation process.

[0046] Embodiment 2

[0047] As a further preference of the first embodiment, the difference of this embodiment is that the connection structure is tilted as a whole, as follows:

[0048] The discharge barrel 11 is tilted on the discharge port of the pulping barrel a, and the discharge nozzle of the discharge barrel 11 extends to the inside of the barrel transition sleeve 21. The discharge port of the pulping barrel a and the feed port of the barrel b are tilted, and the tilt angle is consistent with that of the discharge device 1 and the feed device 2.

[0049] In the present embodiment, the connecting structure is obliquely directed from the discharge port of the slurry barrel a to one side of the mold, and the barrel transition sleeve 21 extends toward the discharge barrel 11, so that the slurry flow channel c is an inclined linear setting. Compared with the segmented turning setting of the flow channel in the prior art, the linear flow channel of the present application has higher transmission efficiency and reduces the possibility of slurry retention on the barrel wall; the inclined setting can prevent the molten slurry from directly flushing the feed port of the barrel b, delaying the erosion of the feed port by the slurry and improving the service life. Furthermore, the oblique setting can also avoid the need to set a splash guard at the connection, avoiding the influence of the splash guard on the self-adjustment of the adaptive connection section 22, and can also reduce the dead corner of the slurry splashing to the connection to a certain extent.

[0050] A special-shaped groove matching the shape of the second connecting plate 23 is arranged on the outer side of the barrel wall of the barrel b near the feed port, and a section parallel to the surface of the first connecting plate 224 near the second connecting plate 23 is also arranged on the outer side of the barrel wall of the barrel b near the feed port.

[0051] In this embodiment, since the barrel transition sleeve 21 is inclined and has a limited length, in order to avoid the barrel wall of barrel b from colliding with the second connecting plate 23 and causing damage, and the first connecting plate 224 abutting against the barrel wall of barrel b to interfere with the installation of the barrel transition sleeve 21, the barrel wall of barrel b is respectively provided with special-shaped grooves and cut surfaces adapted to the second connecting plate 23 and the first connecting plate 224, thereby ensuring the stability of the connection between the barrel transition sleeve 21 and the feed port of barrel b, and the special-shaped grooves can also reduce the entry of gas during the activity process to a certain extent.

[0052] The feed port connection structure for a semi-solid process of magnesium alloy for a cold chamber die-casting machine provided in the present application has the following advantages over the prior art: the oblique linear slurry flow channel design avoids the slurry falling vertically into the barrel and exerting a large impact force on the feed port. At the same time, there are no structural dead corners that cause slurry retention, and it can also prevent the slurry from splashing onto the corners of the connection to a certain extent.

[0053] In other embodiments, a cold chamber die-casting machine for semi-solid magnesium alloy is provided, which includes any one of the above-mentioned feed port connection structures of the semi-solid process of magnesium alloy for the cold chamber die-casting machine.

[0054] The above is a detailed description of the implementation of the utility model in conjunction with the accompanying drawings, but the utility model is not limited to the above implementation. Various modifications can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the utility model. These are all non-creative modifications and are protected by patent law as long as they are within the scope of the claims of the utility model.

Claims

1. A feed port connection structure for a semi-solid process of magnesium alloy for a cold chamber die casting machine, characterized in that: The invention comprises a discharge device (1) arranged on the discharge port of a pulping barrel (a), and a feeding device (2) arranged on the discharge device (1) and connected to the feeding port of a barrel (b); the feeding device (2) comprises a barrel transition sleeve (21) arranged on the feeding port of the barrel (b) and extending toward the discharge device (1), and an adaptive connecting section (22) arranged on the barrel transition sleeve (21) near the end of the discharge device (1) and connected to the discharge device (1).

2. The feed port connection structure of a magnesium alloy semi-solid process for a cold chamber die casting machine according to claim 1, characterized in that: The adaptive connecting section (22) comprises a bellows (221), a fixing plate (222) arranged at the end of the bellows (221), a pressing hole (223) arranged on the fixing plate (222) and having an interference fit with the end of the discharge device (1), and a first connecting plate (224) arranged on the outside of the end of the bellows (221) away from the fixing plate (222) and used to connect to the barrel transition sleeve (21).

3. The feed port connection structure of a semi-solid process of magnesium alloy for a cold chamber die casting machine according to claim 2, characterized in that: The discharge device (1) comprises a discharge barrel (11) arranged on the discharge port of the slurry barrel (a) and connected with the adaptive connection section (22) to form a slurry flow channel (c), and an electric heating ring (12) arranged on the peripheral side of the discharge barrel (11).

4. The feed port connection structure of a magnesium alloy semi-solid process for a cold chamber die casting machine according to claim 3, characterized in that: The discharging device (1) further comprises a temperature sensor (13) arranged in the discharging barrel (11).

5. The feed port connection structure of a semi-solid process of magnesium alloy for a cold chamber die casting machine according to claim 3, characterized in that: An annular groove (111) for interference fit with the clamping hole (223) is provided on the outer side of the end wall of the discharge barrel (11) close to the adaptive connecting section (22).

6. The feed port connection structure of a semi-solid process of magnesium alloy for a cold chamber die casting machine according to claim 3, characterized in that: The discharge barrel (11) is arranged obliquely on the discharge port of the pulping barrel (a), and the discharge nozzle of the discharge barrel (11) extends to the interior of the barrel transition sleeve (21).

7. The feed port connection structure of a magnesium alloy semi-solid process for a cold chamber die casting machine according to claim 3, characterized in that: The discharge barrel (11) further comprises a threaded section (112) arranged on the end barrel wall away from the adaptive connecting section (22) and connected to the pulping barrel (a), and a convex ring (113) arranged on the barrel wall of the discharge barrel (11) and forming a groove with the adaptive connecting section (22) for limiting the electric heating ring (12).

8. The feed port connection structure of a semi-solid process of magnesium alloy for a cold chamber die casting machine according to claim 2, characterized in that: The feeding device (2) further comprises a second connecting plate (23) which is arranged on the barrel transition sleeve (21) and is bolted to the first connecting plate (224).

9. The feed port connection structure of a magnesium alloy semi-solid process for a cold chamber die casting machine according to claim 8, characterized in that: The feeding device (2) further comprises a sealing ring (24) arranged between the first connecting plate (224) and the second connecting plate (23).

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