Semi-solid forming mold assembly

Abstract

The utility model relates to the technical field of semi-solid forming, in particular to a semi-solid forming die assembly which comprises a charging barrel assembly and a die core assembly, and the charging barrel assembly is provided with a feeding channel used for guiding raw materials to enter the die core assembly; the mold core assembly is provided with a feeding runner and a cavity; the inlet end of the feeding runner is communicated with a feeding channel of the charging barrel assembly, and the outlet end of the feeding runner is communicated with the cavity; the feeding flow channel is in a girdling shape, the middle portion of the feeding flow channel is narrow, and the two ends of the feeding flow channel are gradually enlarged. According to the utility model, the girdling-shaped feeding runner design is adopted, so that the vortex and backflow phenomena of slurry in the flowing process can be reduced, the energy loss is reduced, and meanwhile, the slurry can be uniformly and quickly filled into the whole cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-solid forming, in particular to a semi-solid forming die assembly. Background Art

[0002] Aluminum alloy has the characteristics of light weight, good strength, corrosion resistance and unique metallic luster. It is widely used in electronic appliances, communication equipment, lighting devices, power tools, new energy vehicles and other fields, such as the casings of electronic products such as smart phones, laptops, and tablets.

[0003] Semi-solid squeeze casting molds are special molds used in semi-solid squeeze casting processes. Semi-solid squeeze casting is a metal forming technology between die casting and forging. After heating the metal to a semi-solid state, the semi-solid slurry is squeezed into the mold cavity through a semi-solid slurry conveying device to obtain parts of the desired shape and size. Semi-solid squeeze casting molds are usually composed of an upper mold, a lower mold, a mold core, a sprue sleeve and other components, wherein the mold core is used to form the shape of the part, and the sprue sleeve is used to guide the molten metal into the cavity. However, existing semi-solid squeeze casting molds are mostly used in industrial fields such as automobiles and aerospace, and the feed port of the mold mostly adopts a circular channel. When it is necessary to form a thin shell of electronic products such as laptops and tablets, it is difficult to ensure uniform filling of the cavity. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide a semi-solid forming device, which adopts a waist-shaped feed flow channel design, which helps to reduce the eddy current and backflow phenomenon of the slurry during the flow process, and reduces energy loss. At the same time, the narrow part in the middle of the flow channel can accelerate the flow rate of the slurry, so that it can obtain sufficient kinetic energy before reaching the cavity, thereby ensuring that the slurry can evenly and quickly fill the entire cavity.

[0005] The first aspect of the utility model is to provide a semi-solid forming mold assembly, comprising:

[0006] A barrel assembly, wherein the barrel assembly has a feed channel for guiding the raw material into the mold core assembly;

[0007] A mold core assembly, the mold core assembly having a feed flow channel and a cavity; the inlet end of the feed flow channel is connected to the feed channel of the barrel assembly, and the outlet end thereof is connected to the cavity; the feed flow channel is a flow channel in a waisted shape, the middle part of which is narrower and the two ends gradually expand.

[0008] In the first aspect of the present utility model, as a preferred embodiment,

[0009] The barrel assembly comprises an upper barrel and a lower barrel, wherein the upper barrel is fixedly connected to the lower barrel in a detachable manner, and the upper barrel and the lower barrel are enclosed to form the feed channel;

[0010] The mold core assembly includes an upper mold core and a lower mold core, and the upper mold core and the lower mold core are fixedly connected in a detachable manner. The upper mold core and the lower mold core are enclosed to form the feed flow channel and the cavity.

[0011] In the first aspect of the utility model, as a preferred embodiment, a receiving space for receiving impurities is further provided between the feed channel of the barrel assembly and the feed flow channel of the mold core assembly.

[0012] In the first aspect of the utility model, as a preferred embodiment, the feed channel includes a first connecting hole and a second connecting hole which are connected in sequence; wherein, the feed port of the first connecting hole is used to connect the semi-solid slurry conveying pipe joint, and the discharge port of the second connecting hole is connected to the feed port of the feed flow channel; the radius of the first connecting hole is greater than the radius of the second connecting hole, and a stepped stop surface is formed at the connection between the first connecting hole and the second connecting hole, and the stepped stop surface is used to position the semi-solid slurry conveying pipe joint.

[0013] In the first aspect of the utility model, as a preferred embodiment, the accommodating space is arranged between the second connecting hole and the feed channel, and the longitudinal cross-sectional area of ​​the accommodating space is larger than the longitudinal cross-sectional area of ​​the second connecting hole and larger than the longitudinal cross-sectional area of ​​the feed channel.

[0014] In the first aspect of the utility model, as a preferred embodiment, the accommodating space is enclosed by a first receiving groove arranged at the outlet of the second connecting hole and a second receiving groove arranged at the feed inlet of the feed channel, the first receiving groove and the second receiving groove are coaxially arranged with the second connecting hole, and the radii of the first receiving groove and the second receiving groove are the same, the radius of the first receiving groove is larger than the radius of the second connecting hole, and the radius of the second receiving groove is larger than the width of the feed inlet of the feed channel.

[0015] In the first aspect of the utility model, as a preferred embodiment, the waist-shaped flow channel includes a curved contraction section, a curved diffusion section and a smooth transition section, wherein the width of the inlet end of the curved contraction section is connected to the second receiving groove, and the width of the inlet end of the curved contraction section is smaller than the diameter of the second receiving groove, the width of the outlet end of the curved contraction section is smaller than the width of its inlet end, the width of the inlet end of the curved diffusion section is the same as the width of the outlet end of the contraction section, and the width of its outlet end is greater than the width of its inlet end, the width of the smooth transition section is the same as the width of the outlet end of the diffusion section, and the width of the outlet end of the smooth transition section is the same as the width of the cavity.

[0016] In the first aspect of the utility model, as a preferred embodiment, a protrusion is provided at the connection between the smooth transition section and the cavity, and the width of the protrusion is the same as the width of the cavity.

[0017] In the first aspect of the utility model, as a preferred embodiment, the mold core assembly further has an overflow channel, and the inlet end of the overflow channel is connected to the mold cavity.

[0018] In the first aspect of the utility model, as a preferred embodiment, it also includes an overflow trough assembly, which includes an upper overflow trough body and a lower overflow trough body, and the upper overflow trough body and the lower overflow trough body are fixedly connected in a detachable manner, and the upper overflow trough body and the lower overflow trough body are enclosed to form an overflow buffer chamber, and the feed port of the overflow buffer chamber is connected to the discharge port of the overflow channel; the upper overflow trough body is also provided with an exhaust channel, one end of the exhaust channel is connected to the overflow buffer chamber, and the other end thereof is connected to the external environment.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The feed channel of the semi-solid forming mold assembly of the utility model is a channel in the shape of a waist, wherein the middle part is narrower and the two ends gradually expand. The characteristic of the waist-shaped channel is that the middle part is narrower and the two ends gradually expand. This design can produce a "focusing" effect, so that the slurry can be centrally guided and constrained when flowing through the channel, so as to enter the mold cavity more smoothly. The waist-shaped design helps to reduce the eddy current and backflow of the slurry during the flow process, thereby reducing energy loss. At the same time, the narrow part in the middle of the channel can accelerate the flow rate of the slurry, so that it obtains sufficient kinetic energy before reaching the cavity, thereby ensuring that the slurry can fill the entire cavity evenly and quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the barrel assembly and the mold core assembly of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the lower barrel and the lower die core of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the upper barrel and the upper mold core of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the lower mold core of the utility model;

[0025] Figure 5 It is a structural schematic diagram of the barrel assembly, the mold core assembly and the overflow trough assembly of the utility model;

[0026] Figure 6 It is a schematic diagram of the split structure of the overflow trough assembly of the utility model.

[0027] In the figure: 10, barrel assembly; 11, upper barrel; 12, lower barrel; 13, feed channel; 131, first connecting hole; 132, second connecting hole; 133, stepped stop surface; 20, mold core assembly; 21, upper mold core; 22, lower mold core; 23, feed flow channel; 231, curved contraction section; 232, curved diffusion section; 233, smooth transition section; 234, raised portion; 24, cavity; 25, overflow channel; 30, overflow trough assembly; 31, upper overflow trough body; 311, exhaust channel; 32, lower overflow trough body; 33, overflow buffer chamber; 331, upper buffer groove; 332, lower buffer groove; 333, upper protrusion; 334, lower protrusion; 40, accommodating space; 41, first receiving groove; 42, second receiving groove. DETAILED DESCRIPTION

[0028] Below, in conjunction with the accompanying drawings and specific embodiments, the utility model is further described. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Except for special instructions, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0029] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In the description of the present application, "plurality" means two or more, unless otherwise precisely and specifically specified.

[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be connected through an intermediary medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] Please refer to Figure 1-6 As shown, this embodiment provides a semi-solid forming mold assembly, including: a barrel assembly 10 and a mold core assembly 20;

[0033] Specifically, the barrel assembly 10 has a feed channel 13 for guiding the raw material into the mold core assembly 20;

[0034] Specifically, the mold core assembly 20 has a feed channel 23 and a cavity 24; the inlet end of the feed channel 23 is connected to the feed channel 13 of the barrel assembly 10, and the outlet end thereof is connected to the cavity 24; the feed channel 23 is a channel in a waisted shape, the middle part of which is narrow and the two ends gradually expand.

[0035] In this embodiment, based on the above structure, the feed channel 23 of the semi-solid forming mold assembly of the utility model is a channel in the shape of a waist, wherein the middle part is narrow and the two ends gradually expand. The characteristic of the waist-shaped channel is that the middle part is narrow and the two ends gradually expand. This design can produce a "focusing" effect, so that the slurry can be centrally guided and constrained when flowing through the channel, so as to enter the mold cavity 24 more smoothly. The waist-shaped design helps to reduce the eddy current and backflow of the slurry during the flow process, reducing energy loss. At the same time, the narrow part in the middle of the channel can accelerate the flow rate of the slurry, so that it obtains sufficient kinetic energy before reaching the cavity 24, thereby ensuring that the slurry can fill the entire cavity 24 evenly and quickly.

[0036] In a preferred embodiment of the present invention,

[0037] The barrel assembly 10 includes an upper barrel 11 and a lower barrel 12, the upper barrel 11 and the lower barrel 12 are fixedly connected in a detachable manner, and the upper barrel 11 and the lower barrel 12 are enclosed to form a feed channel 13;

[0038] The mold core assembly 20 includes an upper mold core 21 and a lower mold core 22 . The upper mold core 21 and the lower mold core 22 are fixedly connected in a detachable manner. The upper mold core 21 and the lower mold core 22 are enclosed to form a feed channel 23 and a cavity 24 .

[0039] Based on the above structure, the mold core assembly 20 is composed of an upper mold core 21 and a lower mold core 22, which enclose and form a feed channel 23. The design of the feed channel 23 ensures that the raw material can evenly fill the mold cavity 24, and the shape of the mold cavity 24 directly determines the appearance of the final product.

[0040] In a preferred embodiment of the present invention, a receiving space 40 for receiving impurities is further provided between the feed channel 13 of the barrel assembly 10 and the feed flow channel 23 of the mold core assembly 20 .

[0041] On the basis of the above structure, the utility model sets a holding space 40 for holding impurities between the feed channel 13 and the feed flow channel 23. This design innovatively solves the problem of impurities that may exist in the raw materials. Before the raw materials enter the mold core assembly 20, the impurities can be effectively trapped in the holding space 40, thereby avoiding the influence of impurities on the molding process and improving the quality and consistency of the finished product. On the basis of the above structure, due to the large longitudinal cross-sectional area of ​​the holding space 40, it can hold more impurities, thereby reducing the possibility of impurities entering the feed flow channel 23 or the cavity 24. This design effectively extends the cleaning cycle of the mold and improves production efficiency. The larger holding space 40 avoids the problem of raw material flow obstruction caused by the accumulation of impurities. The raw material can smoothly enter the feed flow channel 23 through the second connecting hole 132, ensuring the continuity and stability of the raw material flow. The existence of the holding space 40 reduces the wear of the second connecting hole 132 and the feed flow channel 23 by impurities, thereby improving the service life of the mold. At the same time, this also reduces mold failures and downtime caused by impurities and reduces production costs. During the use of the mold, the accommodating space 40 can be cleaned regularly to ensure the continuous and stable operation of the mold.

[0042] In a preferred embodiment of the utility model, the feed channel 13 includes a first connecting hole 131 and a second connecting hole 132 which are connected in sequence; wherein, the feed port of the first connecting hole 131 is used to connect the semi-solid slurry conveying pipe joint, and the discharge port of the second connecting hole 132 is connected to the feed port of the feed channel 23; the radius of the first connecting hole 131 is greater than the radius of the second connecting hole 132, and a stepped stop surface 133 is formed at the connection between the first connecting hole 131 and the second connecting hole 132, and the stepped stop surface 133 is used to position the semi-solid slurry conveying pipe joint.

[0043] On the basis of the above structure, the design of the first connection hole 131 and the second connection hole 132 not only considers the flow characteristics of the slurry, but also takes into account the stability and convenience of the structure. The larger radius of the first connection hole 131 reduces the flow velocity at the slurry inlet and reduces the pressure loss, while the smaller radius of the second connection hole 132 helps to accelerate the slurry to flow to the cavity 24. The stepped stop surface 133 between the two not only changes the flow direction of the slurry, but more importantly, it acts as a positioning structure to ensure that the semi-solid slurry delivery pipe joint can be accurately and stably connected to the first connection hole 131. The stepped stop surface 133 can form a good match with the delivery pipe joint to prevent the joint from shifting or shaking during the connection process. This positioning function not only improves the stability of the connection, but also reduces the risk of slurry leakage caused by improper connection, ensuring that the slurry can enter the mold accurately. The presence of the stepped stop surface 133 also makes the installation of the delivery pipe joint simpler and faster. The operator only needs to align the joint with the feed port of the first connection hole 131 and then push it in along the stepped stop surface 133. At the same time, this design also facilitates future maintenance and replacement work, reducing maintenance costs and time costs.

[0044] In a preferred embodiment of the present invention, the accommodating space 40 is disposed between the second connecting hole 132 and the feed channel 23 , and the longitudinal cross-sectional area of ​​the accommodating space 40 is larger than the longitudinal cross-sectional area of ​​the second connecting hole 132 and larger than the longitudinal cross-sectional area of ​​the feed channel 23 .

[0045] On the basis of the above structure, since the longitudinal cross-sectional area of ​​the accommodating space 40 is large, it can accommodate more impurities, thereby reducing the possibility of impurities entering the feed channel 23 or the cavity 24. This design effectively extends the cleaning cycle of the mold and improves production efficiency. The larger accommodating space 40 avoids the problem of obstruction of raw material flow caused by the accumulation of impurities. The raw material can smoothly enter the feed channel 23 through the second connecting hole 132, ensuring the continuity and stability of the raw material flow. The existence of the accommodating space 40 reduces the wear of the second connecting hole 132 and the feed channel 23 by impurities, thereby increasing the service life of the mold. At the same time, this also reduces mold failures and downtime caused by impurities, and reduces production costs. During the use of the mold, the accommodating space 40 can be cleaned regularly to ensure the continuous and stable operation of the mold.

[0046] In a preferred embodiment of the utility model, the accommodating space 40 is enclosed by a first receiving groove 41 arranged at the outlet of the second connecting hole 132 and a second receiving groove 42 arranged at the feed port of the feed channel 23. The first receiving groove 41 and the second receiving groove 42 are coaxially arranged with the second connecting hole 132, and the radii of the first receiving groove 41 and the second receiving groove 42 are the same. The radius of the first receiving groove 41 is larger than the radius of the second connecting hole 132, and the radius of the second receiving groove 42 is larger than the width of the feed port of the feed channel 23.

[0047] On the basis of the above structure, the accommodating space 40 is enclosed by a first receiving groove 41 arranged at the outlet of the second connecting hole 132 and a second receiving groove 42 arranged at the feed inlet of the feed channel 23. This design not only expands the volume of the accommodating space 40, so that more impurities can be collected and accommodated, but also forms a continuous and closed space through the cooperation of the two receiving grooves, thereby preventing the diffusion and accumulation of impurities in the mold. The first receiving groove 41 and the second receiving groove 42 are coaxially arranged with the second connecting hole 132. This design ensures the continuity and stability of the slurry flow. Due to the coaxial arrangement, when the slurry flows out of the second connecting hole 132, it can smoothly enter the first receiving groove 41, then pass through the second receiving groove 42, and finally enter the feed channel 23. There is no abrupt turning or mutation in the entire flow process, which reduces the slurry flow resistance and improves the flow efficiency. The radius of the first receiving groove 41 is greater than the radius of the second connecting hole 132. This design enables the first receiving groove 41 to accommodate the slurry carrying impurities that flows out of the second connecting hole 132 without causing congestion or backflow of the slurry. At the same time, the radius of the second receiving groove 42 is greater than the width of the feed port of the feed channel 23, which also ensures that the impurities can be effectively collected and intercepted before entering the feed channel 23, preventing the impurities from clogging and wearing the feed channel 23. By designing the accommodating space 40, the mold can effectively collect and accommodate the impurities generated during long-term use, reducing the damage and destruction of the impurities to the inside of the mold. This not only extends the service life of the mold, but also reduces the maintenance cost of the mold.

[0048] In a preferred embodiment of the present invention, the waist-shaped flow channel includes a curved contraction section 231, a curved diffusion section 232 and a smooth transition section 233, wherein the width of the inlet end of the curved contraction section 231 is connected to the second receiving groove, and the width of the inlet end of the curved contraction section 231 is smaller than the diameter of the second receiving groove, the width of the outlet end of the curved contraction section 231 is smaller than the width of its inlet end, the width of the inlet end of the curved diffusion section 232 is the same as the width of the outlet end of the contraction section, and the width of its outlet end is greater than the width of its inlet end, the width of the smooth transition section 233 is the same as the width of the outlet end of the diffusion section, and the width of the outlet end of the smooth transition section 233 is the same as the width of the cavity 24.

[0049] On the basis of the above structure, this embodiment ensures that the slurry can smoothly and efficiently enter the mold cavity 24 by subdividing the flow channel into a curved contraction section 231, a curved diffusion section 232 and a smooth transition section 233, while effectively preventing the entry of impurities. The inlet end of the curved contraction section 231 is connected to the second receiving groove, and its width is less than the diameter of the second receiving groove. This design allows the slurry to gradually accelerate when flowing into the contraction section and be subjected to a certain compression, thereby increasing the flow rate and kinetic energy of the slurry. At the same time, the curved design helps to reduce flow resistance and allow the slurry to pass more smoothly. The inlet end of the curved diffusion section 232 is connected to the outlet end of the contraction section, and its width gradually increases. This design allows the slurry to gradually slow down and diffuse when flowing through the diffusion section, achieving a smooth transition from high flow rate to low flow rate. This not only reduces the impact and eddy current of the slurry at the entrance of the cavity 24, but also ensures that the slurry can evenly and fully fill the entire cavity 24. The smooth transition section 233 connects the diffusion section and the cavity 24, and its width is the same as the outlet end of the diffusion section, and gradually transitions to the same width as the cavity 24. This design ensures that the slurry can continue to maintain a stable flow rate and flow direction before entering the cavity 24, avoiding flow turbulence or impurities entering due to sudden changes. At the same time, the curved shape of the smooth transition section 233 also helps to reduce the resistance of the slurry during the flow process and improve the flow efficiency. Through the design of the waist-shaped flow channel, the slurry can enter the cavity 24 in a more uniform manner, avoiding uneven filling caused by uneven flow rate or unstable flow direction. This helps to improve the quality and consistency of the product.

[0050] In a preferred embodiment of the present invention, a protrusion 234 is provided at the connection between the smooth transition section 233 and the cavity 24 , and the width of the protrusion 234 is the same as the width of the cavity 24 .

[0051] On the basis of the above structure, the design of the raised portion 234 of this embodiment can change the trajectory and speed of the raw material flow, and play a role in guiding and adjusting the flow of the raw material. When the raw material enters the cavity 24 through the smooth transition section 233, the raised portion 234 acts as an obstacle, so that the raw material generates a diversion when it contacts the raised portion 234, so that it is more evenly distributed to various parts of the cavity 24. The width of the raised portion 234 is the same as the width of the cavity 24. This design ensures that the raised portion 234 can completely cover the entrance of the cavity 24, so that the raw material can be fully affected by the raised portion 234 when entering the cavity 24. This design avoids the concentrated flow or dead corner of the raw material at the entrance of the cavity 24, and ensures the uniform distribution of the raw material. By setting the raised portion 234, the raw material can be effectively dispersed and guided before entering the cavity 24, thereby reducing the flow resistance and eddy current phenomenon of the raw material in the cavity 24. This helps to improve the filling efficiency and uniformity of the raw material and reduce the generation of product defects. In addition, the design of the protrusion 234 enables the raw material to be filled into the cavity 24 more evenly, thereby improving the quality and consistency of the product.

[0052] In a preferred embodiment of the present invention, the mold core assembly 20 further has an overflow channel 25, the inlet end of which is connected to the cavity 24. The overflow channel 25 is designed so that the raw material can flow into the cavity 24 evenly, and when necessary, the excess raw material can be discharged through the overflow channel 25, thereby achieving efficient molding and precise control.

[0053] In a preferred embodiment of the utility model, an overflow trough assembly 30 is also included. The overflow trough assembly 30 includes an upper overflow trough body 31 and a lower overflow trough body 32. The upper overflow trough body 31 and the lower overflow trough body 32 are fixedly connected in a detachable manner. The upper overflow trough body 31 and the lower overflow trough body 32 are enclosed to form an overflow buffer chamber 33. The feed port of the overflow buffer chamber 33 is connected to the discharge port of the overflow channel 25. The upper overflow trough body 31 is also provided with an exhaust channel 311. One end of the exhaust channel 311 is connected to the overflow buffer chamber 33, and the other end thereof is connected to the external environment. The function of this buffer chamber is to receive the excess raw material flowing out of the overflow channel 25 of the mold core assembly 20, and to communicate with the external pipeline through its discharge port to guide the raw material out of the mold. This design effectively avoids the retention and waste of raw materials in the mold and improves production efficiency.

[0054] In a preferred embodiment of the utility model, the overflow buffer chamber 33 is enclosed by an upper buffer groove 331 arranged on the bottom surface of the upper overflow trough body 31 and a lower buffer groove 332 arranged on the top surface of the lower overflow trough body 32. A plurality of upper protrusions 333 arranged in parallel are arranged in the upper buffer groove 331, and a plurality of lower protrusions 334 arranged in parallel are arranged in the lower buffer groove 332. The plurality of upper protrusions 333 and the plurality of lower protrusions 334 are staggered with each other, so that a continuous wavy flow channel is formed in the overflow buffer chamber 33.

[0055] On the basis of the above structure, the design of the overflow buffer chamber 33 fully combines the characteristics and actual needs of the slurry flow in the mold, and effectively realizes the buffering and uniform distribution of the slurry through the carefully arranged upper and lower buffer grooves 332 and protrusion structures. The overflow buffer chamber 33 is enclosed by the upper buffer groove 331 on the bottom surface of the upper overflow tank body 31 and the lower buffer groove 332 on the top surface of the lower overflow tank body 32. This design not only utilizes the existing structure of the mold, but also expands the volume of the buffer chamber by adding buffer grooves, providing sufficient space for the slurry to buffer and flow. Multiple upper protrusions 333 and multiple lower protrusions 334 are arranged in a staggered manner, and this design forms a continuous wavy flow channel in the overflow buffer chamber 33. This flow channel design not only increases the flow distance and time of the slurry in the buffer chamber, but also enables the slurry to change direction and speed multiple times during the flow process, further promoting the buffering of the slurry. Through the continuous wavy flow channel, the slurry is fully buffered in the overflow buffer chamber 33. After being guided by the protrusions and grooves, the high-flow slurry gradually decreases in flow rate and becomes uniform. At the same time, the presence of the protrusions and grooves can also effectively break up large particles or bubbles in the slurry, preventing them from directly entering the mold cavity 24, thereby ensuring the quality and performance of the product.

[0056] In a preferred embodiment of the utility model, the upper overflow tank body 31 is further provided with an exhaust channel 311, one end of which is connected to the overflow buffer chamber 33, and the other end of which is connected to the external environment. It is used to safely discharge the gas that may be generated in the overflow buffer chamber 33 to the external environment. This design helps to maintain the stability and safety of the tank body when handling liquid overflow, and prevents problems that may be caused by gas accumulation or excessive pressure.

[0057] Although only certain components and embodiments of the present application have been illustrated and described, many modifications and changes may be conceived by those skilled in the art without actually departing from the scope and spirit of the claims, such as changes in the size, dimensions, structure, shape and proportion of the various elements, mounting arrangements, material usage, color, orientation, etc.

[0058] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A semi-solid forming mold assembly, characterized in that: include: A barrel assembly, wherein the barrel assembly has a feed channel for guiding the raw material into the mold core assembly; A mold core assembly, the mold core assembly having a feed flow channel and a cavity; the inlet end of the feed flow channel is connected to the feed channel of the barrel assembly, and the outlet end thereof is connected to the cavity; the feed flow channel is a flow channel in a waisted shape, the middle part of which is narrower and the two ends gradually expand.

2. The semi-solid forming mold assembly according to claim 1, characterized in that: The barrel assembly comprises an upper barrel and a lower barrel, wherein the upper barrel is fixedly connected to the lower barrel in a detachable manner, and the upper barrel and the lower barrel are enclosed to form the feed channel; The mold core assembly includes an upper mold core and a lower mold core, and the upper mold core and the lower mold core are fixedly connected in a detachable manner. The upper mold core and the lower mold core are enclosed to form the feed flow channel and the cavity.

3. The semi-solid forming die assembly according to claim 2, characterized in that: A holding space for holding impurities is also provided between the feed channel of the barrel assembly and the feed flow channel of the mold core assembly.

4. The semi-solid forming die assembly according to claim 3, characterized in that: The feed channel includes a first connecting hole and a second connecting hole which are connected in sequence; wherein, the feed port of the first connecting hole is used to connect the semi-solid slurry conveying pipe joint, and the discharge port of the second connecting hole is connected to the feed port of the feed flow channel; the radius of the first connecting hole is greater than the radius of the second connecting hole, and a stepped stop surface is formed at the connection between the first connecting hole and the second connecting hole, and the stepped stop surface is used to position the semi-solid slurry conveying pipe joint.

5. The semi-solid forming die assembly according to claim 4, characterized in that: The accommodating space is arranged between the second connecting hole and the feed flow channel, and the longitudinal cross-sectional area of ​​the accommodating space is larger than the longitudinal cross-sectional area of ​​the second connecting hole and larger than the longitudinal cross-sectional area of ​​the feed flow channel.

6. The semi-solid forming die assembly according to claim 5, characterized in that: The accommodating space is enclosed by a first receiving groove arranged at the outlet of the second connecting hole and a second receiving groove arranged at the feed inlet of the feed channel. The first receiving groove and the second receiving groove are coaxially arranged with the second connecting hole, and the radii of the first receiving groove and the second receiving groove are the same. The radius of the first receiving groove is larger than the radius of the second connecting hole, and the radius of the second receiving groove is larger than the width of the feed inlet of the feed channel.

7. The semi-solid forming die assembly according to claim 6, characterized in that: The waist-shaped flow channel includes a curved contraction section, a curved diffusion section and a smooth transition section, wherein the width of the inlet end of the curved contraction section is connected to the second receiving groove, and the width of the inlet end of the curved contraction section is smaller than the diameter of the second receiving groove, the width of the outlet end of the curved contraction section is smaller than the width of its inlet end, the width of the inlet end of the curved diffusion section is the same as the width of the outlet end of the contraction section, and the width of its outlet end is larger than the width of its inlet end, the width of the smooth transition section is the same as the width of the outlet end of the diffusion section, and the width of the outlet end of the smooth transition section is the same as the width of the cavity.

8. The semi-solid forming die assembly according to claim 7, characterized in that: A convex portion is provided at the connection between the smooth transition section and the cavity, and the width of the convex portion is the same as the width of the cavity.

9. The semi-solid forming mold assembly according to claim 1, characterized in that: The mold core assembly also has an overflow channel, and the inlet end of the overflow channel is connected to the mold cavity.

10. The semi-solid forming mold assembly according to claim 9, characterized in that: It also includes an overflow trough assembly, which includes an upper overflow trough body and a lower overflow trough body, the upper overflow trough body and the lower overflow trough body are fixedly connected in a detachable manner, and the upper overflow trough body and the lower overflow trough body are enclosed to form an overflow buffer cavity, and the feed port of the overflow buffer cavity is connected to the discharge port of the overflow channel; the upper overflow trough body is also provided with an exhaust channel, one end of the exhaust channel is connected to the overflow buffer cavity, and the other end thereof is connected to the external environment.

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