Injection system of magnesium alloy die-casting machine

Abstract

The utility model is suitable for the technical field of die-casting machines, and provides a magnesium alloy die-casting machine injection system which comprises an injection cavity. The piston rod is arranged in the injection cavity; a constant-force spring is arranged at the end side position, close to an opening in one side, of the injection cavity, and an ejection piston is arranged at the end, away from the piston rod, of the constant-force spring; an injection punch is arranged at the end, away from the constant-force spring, of the piston rod. According to the utility model, quality reduction and impurity influence caused by long-time standing of the material are effectively avoided, and the material entering the injection cavity is ensured to be pure and the size of the material reaches the standard; meanwhile, an efficient stirring system obviously enhances the fluidity and uniformity of materials, a solid foundation is laid for the materials to smoothly and uniformly fill a cavity of a casting die holder, quality defects caused by uneven distribution of the materials of die castings are effectively avoided, in addition, the high stability of an injection punch ensures that the materials are accurately filled in the cavity without deviation, and the production efficiency is improved. And the precision and the consistency of the die casting are further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to die casting machine technical field especially relates to a magnesium alloy die casting machine injection system. BACKGROUND

[0002] In the field of magnesium alloy die casting, traditional die casting technology faces many challenges, which not only affect the quality of die castings, but also limit the improvement of production efficiency.

[0003] I. Material handling problems

[0004] Magnesium alloy material is prone to quality decline such as oxidation and agglomeration after long-term standing, which not only reduces the fluidity of the material, but also affects the final quality of the die casting; in addition, impurities in the material can potentially affect the quality of the mold, resulting in defects or performance degradation on the surface of the die casting;

[0005] II. Insufficient mixing uniformity

[0006] If the magnesium alloy material is not mixed uniformly during the die casting process, it will lead to uneven distribution of the material when filling the die casting mold cavity, thereby affecting the quality of the die casting; traditional die casting machines have deficiencies in material mixing, making it difficult to ensure uniform mixing of the material;

[0007] III. Injection punch stability problems

[0008] The stability of the injection punch during the stamping process is crucial to the precision and consistency of the die casting; the injection punch of the traditional die casting machine is prone to shaking during the stamping process, which leads to inaccurate material filling and affects the quality of the die casting;

[0009] IV. Inaccurate temperature control

[0010] Magnesium alloy material needs to be kept within the appropriate process temperature range during the die casting process to ensure the fluidity of the material and the quality of the die casting; however, traditional die casting machines have inaccurate temperature control, which leads to large fluctuations in material temperature and affects the stability and reliability of the die casting process. Utility model content

[0011] The utility model provides a magnesium alloy die casting machine injection system, aiming to solve the problems of traditional die casting technology, such as material quality decline due to long-term standing and impurity influence, insufficient mixing uniformity leading to unstable die casting quality, poor injection punch stability affecting filling precision and consistency, and inaccurate temperature control leading to unstable die casting process.

[0012] The utility model discloses a magnesium alloy die -casting machine injection system, including injection chamber, the piston rod of being arranged in injection chamber, the end side position of injection chamber adjacent its one side opening is provided with constant -force spring, and constant -force spring is connected with piston rod and is provided with damper in its inside, the one end of constant -force spring is provided with the material pushing piston away from piston rod, the one end of piston rod is provided with injection punch away from constant -force spring, the outside position of injection punch is provided with die -casting die holder away from piston rod, the top position of injection chamber is provided with the material port of being linked with its inner chamber, be provided with the storage cylinder of being linked with its communication on the material port.

[0013] Preferably, the stirring rod is installed in the storage cylinder through a bearing, a group of sub-stirring blades are arranged at the bottom of the stirring rod, a servo motor is arranged at the top of the storage cylinder, and the output end of the servo motor is fixedly connected with the end of the stirring rod through a key.

[0014] Preferably, a filter screen is arranged at the lower part of the inner cavity of the storage cylinder, and the mesh size of the filter screen is less than 5 mm.

[0015] Preferably, a cavity is arranged in the die -casting die holder, and the cavity is communicated with the end of the injection chamber away from the material pushing piston.

[0016] Preferably, a group of guide grooves are arranged on the inner side wall of the injection chamber in the direction of the injection punch, and the injection punch is in sliding fit with the two guide grooves.

[0017] Preferably, heating blocks and annular heating sleeves are arranged at the outer positions of the die -casting die holder and the storage cylinder respectively, and temperature sensors are integrated in the heating blocks and the heating sleeves.

[0018] Preferably, a control valve is arranged at the position adjacent to the material port of the storage cylinder.

[0019] Compared with the prior art, the embodiment of the application has the following beneficial effects:

[0020] Firstly, the device effectively avoids the quality decline problem caused by long-time standing of the material, and also eliminates the potential influence of impurities in the material on the quality of the casting mold. Through the screening of the filter screen, it is ensured that only pure and size-qualified materials can enter the injection chamber. Secondly, the stirring system in the device significantly improves the fluidity of the material, realizes the uniform mixing of the material, and ensures that the material can be smoothly and uniformly filled into the cavity of the die -casting die holder, thereby effectively avoiding the quality problem of the die casting caused by uneven distribution of the material. In addition, the injection punch shows high stability during the stamping process, avoiding the occurrence of shaking phenomenon. This stability not only ensures that the material can be accurately and deviation-free filled into the cavity, but also further improves the precision and consistency of the die casting.

[0021] Secondly, this device ensures that the magnesium alloy material is always kept within a suitable process temperature range during the die casting process. The preheating and heat preservation effects reduce the temperature loss of the material and provide a stable heating environment. The temperature controller can accurately adjust the temperature of the heating block and the annular heating jacket, thereby achieving precise control of the temperature during the die casting process. This precision and stability of temperature control not only improves the forming quality and production efficiency of the die castings, but also ensures the stability and reliability of the die casting process. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 3 This is a front structural diagram of the present invention;

[0025] Figure 4 This is a front structural diagram of the present invention;

[0026] Figure 5 This is a front sectional view of the structure of this utility model;

[0027] Figure 6 This is a front sectional view of the structure of this utility model;

[0028] In the diagram: 1. Injection chamber; 2. Piston rod; 3. Constant force spring; 4. Ejector piston; 5. Injection punch; 6. Casting mold base; 7. Material inlet; 8. Storage cylinder; 9. Stirring rod; 10. Dispersing blade; 11. Servo motor; 12. Filter screen; 13. Cavity; 14. Guide groove; 15. Heating block; 16. Heating jacket; 17. Control valve. Detailed Implementation

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0030] Reference to an "embodiment" in this document means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0031] The utility model embodiment provides a kind of magnesium alloy die casting machine injection system, as shown in Figures 1-6 It is shown that it includes injection chamber 1;Piston rod 2 is arranged in the injection chamber 1;The constant force spring 3 is arranged in the end side position adjacent to the opening of the injection chamber 1, and the constant force spring 3 is connected with piston rod 2 and is provided with damper in its inside;The constant force spring 3 is provided with material pushing piston 4 in the end away from piston rod 2;The piston rod 2 is provided with injection punch 5 in the end away from constant force spring 3;Injection punch 5 is provided with casting pressure die seat 6 in the outer position away from piston rod 2;Material port 7 is opened in the top position of injection chamber 1 and is communicated with its inner cavity;Material port 7 is provided with storage cylinder 8 communicated therewith.

[0032] It needs to be explained that, since traditional die casting technology faces the problems that quality is reduced and impurity is influenced due to material long-time standing, die casting quality is unstable due to insufficient mixing uniformity, filling precision and consistency are influenced due to poor stability of injection punch 5, and die casting process is unstable due to inaccurate temperature control, the overall efficiency of die casting process is significantly improved by optimizing material processing and temperature control in the scheme;It effectively avoids quality reduction and impurity influence caused by material long-time standing, ensures that the material entering injection chamber 1 is pure and the size meets the requirements;At the same time, the high-efficiency stirring system significantly enhances the liquidity and uniformity of material, provides guarantee for smooth and uniform filling of material in casting pressure die seat 6 type cavity 13, effectively prevents die casting quality problems;In addition, the high stability of injection punch 5 ensures that the material fills the cavity 13 accurately and without deviation, further improves the precision and consistency of die casting parts;More importantly, the device maintains the suitable process temperature of magnesium alloy material in the die casting process through preheating, heat preservation and accurate temperature control, not only significantly improves the forming quality and production efficiency of die casting parts, but also ensures the stability and reliability of die casting process, lays a solid foundation for the production of high-quality die casting parts.

[0033] Specifically, in the embodiment, the scheme mainly comprises a shot chamber 1; in operation, first, magnesium alloy materials are added into a storage cylinder 8; the storage cylinder 8 is communicated with a material inlet 7 of the shot chamber 1, so that the materials can smoothly enter the shot chamber 1; in order to keep the uniformity and fluidity of the materials, then, a piston rod 2 starts to move under the action of external driving force; one end of the piston rod 2 is connected with a constant force spring 3, the constant force spring 3 provides stable thrust for the piston rod 2 and ensures that a certain pressure can be kept during the die casting process; meanwhile, dampers in the constant force spring 3 help to slow down the movement speed of the piston rod 2, so as to avoid impact and vibration, thereby improving the precision and quality of the die casting.

[0034] With the movement of the piston rod 2, a material pushing piston 4 is also pushed, and then pushes the magnesium alloy materials in the shot chamber 1 to a shot punch 5; the shot punch 5 is located at the end of the piston rod 2 away from the constant force spring 3, and the external position of the shot punch 5 is connected with a die casting mold base 6; the die casting mold base 6 is provided with a cavity 13, and the cavity 13 is communicated with the end of the shot chamber 1 away from the material pushing piston 4; when the magnesium alloy materials are pushed to the shot punch 5, the shot punch 5 pushes the magnesium alloy materials into the cavity 13 of the die casting mold base 6, and the die casting process is completed.

[0035] As shown in the further preferred embodiment of the utility model, Figure 5 A stirring rod 9 is mounted in the storage cylinder 8 through a bearing, a group of sub-stirring blades 10 are arranged at the bottom position of the stirring rod 9, a servo motor 11 is arranged at the top position of the storage cylinder 8, and the output end of the servo motor 11 is fixedly connected with the end of the stirring rod 9 through a key.

[0036] In the embodiment, the servo motor 11 rotates and drives the stirring rod 9 to rotate through the key connection, and with the rotation of the stirring rod 9, the sub-stirring blades 10 at the bottom of the stirring rod 9 also move to stir the magnesium alloy materials in the storage cylinder 8 at a specific speed and trajectory, and the stirring action not only helps to uniformly mix the materials and avoid the influence of long-term standing of the materials on the casting quality, but also improves the fluidity of the materials, so as to prepare for the subsequent die casting process.

[0037] As shown in the further preferred embodiment of the utility model, Figure 5 A filter screen 12 is arranged at the lower position in the inner cavity of the storage cylinder 8, and the mesh number of the filter screen 12 is less than 5 mm.

[0038] In the embodiment, after the magnesium alloy materials are fully stirred, they will first pass through the screening of the filter screen 12, the materials meeting the size requirements will continue to flow downward, and larger particles or impurities will be intercepted by the filter screen 12, so that only the materials that have passed the strict screening can enter the shot chamber 1 to participate in the subsequent die casting process, thereby providing a strong guarantee for the high-quality production of the die casting parts.

[0039] The utility model discloses further preferable embodiment, such as Figure 6 As shown in the drawing, the casting-pressing die seat 6 is provided with a cavity 13, and the cavity 13 is connected with one end of the injection chamber 1 away from the material ejecting piston 4.

[0040] In this embodiment, when the injection punch 5 is pushed by the piston rod 2 to press the magnesium alloy material into the injection chamber 1, the material will flow along the set path and finally fill into the cavity 13. During the filling process, the magnesium alloy material is subjected to a certain pressure and temperature, so that solidification and molding occur.

[0041] The utility model discloses further preferable embodiment, such as Figure 6 As shown in the drawing, the inner side wall of the injection chamber 1 is provided with a group of guide grooves 14 arranged in the direction of the injection punch 5, and the injection punch 5 is in sliding fit with the two guide grooves 14.

[0042] In this embodiment, the arrangement of the guide groove 14 enables the injection punch 5 to move along the predetermined trajectory, avoiding the deviation and shaking of the punch. This guiding effect helps to ensure that the magnesium alloy material can be accurately and uniformly filled into the cavity 13 of the casting-pressing die seat 6, thereby improving the precision and quality of the die casting.

[0043] The utility model discloses further preferable embodiment, such as Figure 1 As shown in the drawing, the outer positions of the casting-pressing die seat 6 and the material storage cylinder 8 are respectively provided with a heating block 15 and an annular heating jacket 16, and the heating block 15 and the heating jacket 16 are integrated with temperature sensors.

[0044] In this embodiment, the heating jacket 16 tightly wraps the outside of the material storage cylinder 8, providing uniform preheating and heat preservation for the magnesium alloy material in the cylinder. The preheating helps the uniform flow and filling of the material, and the heat preservation can reduce the temperature loss of the material during the die casting process, ensuring that the material always remains within the temperature range suitable for die casting.

[0045] The heating block 15 is installed on the outside of the casting-pressing die seat 6, and its main purpose is to provide a stable heating environment for the magnesium alloy material in the cavity 13, ensuring that the material in the cavity 13 always remains within the most suitable process temperature range during the die casting process, thereby improving the molding quality and production efficiency of the die casting.

[0046] The temperature controller (PT100) can accurately adjust the temperature of the heating block 15 and the annular heating jacket 16, thereby improving the quality and molding efficiency of the die casting.

[0047] The utility model discloses further preferable embodiment, such as Figure 4 As shown in the drawing, the material storage cylinder 8 is provided with a control valve 17 adjacent to the material inlet 7.

[0048] In this embodiment, the control valve 17 can realize the on-off control of the magnesium alloy material in the storage cylinder 8. When it is needed to add material into the storage cylinder 8, the control valve 17 is opened to allow the material to flow in; when it is needed to stop adding or carry out die casting, the control valve 17 is closed to cut off the flow of the material.

[0049] Working principle: When the device is used, the magnesium alloy material is added into the storage cylinder 8; the outside of the storage cylinder 8 is tightly wrapped with the heating jacket 16 to provide uniform preheating and heat preservation for the material in the storage cylinder 8; the preheating helps the uniform flow and filling of the material, and the heat preservation can reduce the temperature loss of the material during the die casting process, so as to ensure that the material always remains in the temperature range that can be die cast;

[0050] Then, the servo motor 11 starts to rotate and drives the stirring rod 9 to rotate through the key connection; with the rotation of the stirring rod 9, the sub-stirring blades 10 at the bottom of the stirring rod 9 also stir the magnesium alloy material in the storage cylinder 8 at a certain speed and trajectory; this stirring action not only helps the uniform mixing of the material to avoid the influence of long-term standing of the material on the casting quality, but also improves the flowability of the material to prepare for the subsequent die casting process;

[0051] When the magnesium alloy material is fully stirred, it will be screened by the filter screen 12; the material meeting the size requirement will continue to flow downward, and the larger particles or impurities will be intercepted by the filter screen 12; in this way, only the material that has passed the strict screening can enter the injection chamber 1 to participate in the subsequent die casting process, which provides a strong guarantee for the high-quality production of the die casting parts; when it is needed to add more material into the storage cylinder 8, the control valve 17 is opened to allow the material to flow in; when it is needed to stop adding or carry out die casting, the control valve 17 is closed to cut off the flow of the material;

[0052] Next, the piston rod 2 starts to move under the action of external driving force; one end of the piston rod 2 is connected with the constant force spring 3, and the constant force spring 3 provides stable thrust for the piston rod 2 and ensures that a certain pressure can be maintained during the die casting process; at the same time, the damper inside the constant force spring 3 helps to slow down the movement speed of the piston rod 2 to avoid impact and vibration, thereby improving the precision and quality of the die casting parts;

[0053] With the movement of the piston rod 2, the material pushing piston 4 is also pushed, and then the magnesium alloy material in the injection chamber 1 is pushed to the injection punch 5; the injection punch 5 is in sliding fit with the guide groove 14, and the setting of the guide groove 14 enables the injection punch 5 to move along the predetermined track, avoiding the deviation and shaking of the punch, which helps to ensure that the magnesium alloy material can be accurately and uniformly filled into the cavity 13 of the die casting mold base 6, thereby improving the precision and quality of the die casting; the injection punch 5 is located at the end of the piston rod 2 away from the constant force spring 3, and the outer position thereof is connected with the die casting mold base 6; the die casting mold base 6 is provided with the cavity 13, which is connected with the end of the injection chamber 1 away from the material pushing piston 4;

[0054] When the magnesium alloy material is pushed to the injection punch 5, the injection punch 5 presses it into the cavity 13 of the die casting mold base 6; at this time, the heating block 15 starts to provide a stable heating environment for the magnesium alloy material in the cavity 13, ensuring that the material always remains in the most suitable process temperature range during the die casting process; during the filling process, the magnesium alloy material is subjected to certain pressure and temperature, so that solidification and molding occur;

[0055] Finally, the temperature controller can accurately adjust the temperature of the heating block 15 and the annular heating sleeve 16 to ensure the stability of the die casting process and the high-quality production of the die casting; after the completion of the whole die casting process, the die casting can be taken out from the die casting mold base 6 for subsequent processing and detection.

[0056] It should be noted that, for the foregoing embodiments, in order to simply describe, they are all expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited by the described action sequence, because according to the present application, certain steps can be performed in other order or simultaneously. Secondly, those skilled in the art should know that the embodiments described in the specification all belong to preferred embodiments, and the actions and modules involved are not necessarily necessary for the present application.

[0057] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented by other ways. For example, the device embodiments described above are only schematic; the division of the above units is only a logical functioning division; for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or indirect couplings among the units can be implemented by using some interfaces, and a communication connection between the units, or the components, can be electric, mechanical or in other forms.

[0058] The units described as separate components above can or can not be physically separate, and the components displayed as units can or can not be physical units, that is, can be located in one place, or can be distributed to multiple network units. Part or all of the units can be selected to achieve the purpose of the embodiment scheme according to actual needs.

[0059] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the protection scope of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative labor belong to the scope to be protected by the present application. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add or delete or make other adjustments to the features in each embodiment of the present application according to the circumstances without creative labor, so as to obtain different other technical solutions which do not deviate from the concept of the present application in essence. These technical solutions also belong to the scope to be protected by the present application.

Claims

1. A magnesium alloy die casting machine injection system characterized by, Include: Injection chamber (1); Piston rod (2) provided in the injection chamber (1); The constant force spring (3) is provided at the end side position of the injection chamber (1) adjacent to its opening, which is connected with the piston rod (2) and provided with a damper inside; The constant force spring (3) is provided with a material pushing piston (4) at one end away from the piston rod (2); The piston rod (2) is provided with a pressure punch (5) at one end away from the constant force spring (3); The pressure punch (5) is provided with a casting pressure die seat (6) at the outer position away from the piston rod (2); The top position of the injection chamber (1) is provided with a material port (7) communicating with the inner cavity thereof; The material port (7) is provided with a storage cylinder (8) communicating therewith.

2. A magnesium alloy transfer molding machine injection system according to claim 1, wherein The stirring rod (9) is mounted in the storage cylinder (8) through bearing, a group of component stirring blades (10) are arranged at the bottom position of the stirring rod (9), a servo motor (11) is arranged at the top position of the storage cylinder (8), and the output end of the servo motor (11) is fixedly connected with the end of the stirring rod (9) through key.

3. A magnesium alloy transfer molding machine injection system according to claim 2, wherein The lower position of the inner cavity of the storage cylinder (8) is provided with a filter screen (12), and the mesh number of the filter screen (12) is less than 5mm.

4. A magnesium alloy transfer molding machine injection system according to claim 1, wherein The casting pressure die seat (6) is provided with a cavity (13), and the cavity (13) is communicated with the end of the injection chamber (1) away from the material pushing piston (4).

5. A magnesium alloy transfer molding machine injection system as set forth in claim 4, characterized by The inner side wall of the injection chamber (1) is provided with a group of guide grooves (14) arranged in the direction of the pressure punch (5), and the pressure punch (5) is in sliding fit with the two guide grooves (14).

6. A magnesium alloy transfer molding machine injection system according to claim 4, wherein The outer positions of the casting pressure die seat (6) and the storage cylinder (8) are respectively provided with a heating block (15) and an annular heating sleeve (16), and the heating block (15) and the heating sleeve (16) are integrated with temperature sensors.

7. A magnesium alloy transfer molding machine injection system according to claim 6, wherein The control valve (17) is arranged at the position adjacent to the material port (7) of the storage cylinder (8).

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