Die with novel cooling water path structure
By setting an asymmetric circulating cooling water channel structure in the cooling core, the problem of poor filling caused by the large temperature difference between the front and back of the casting was solved, the thermal balance and wall thickness uniformity of the casting were achieved, and the casting quality and production efficiency were improved.
Patent Information
- Application Number
- CN202423175256.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-23
AI Technical Summary
In the prior art, the large temperature difference between the front and rear ends of the casting leads to poor filling of the end surface and the sloping plate surface of the casting. In addition, the cooling core is close to the sloping plate surface, which is an inclined surface, resulting in uneven wall thickness and causing poor filling of the sloping plate surface of the casting.
An asymmetric circulating cooling water channel structure is adopted. An annular water channel is set at one end of the cooling core near the casting, and an inlet and outlet are set at the other end. The end face of the cooling core has the same inclination angle as the inclined plate surface of the casting. The water flow at the large gate position is increased through the annular water channel to achieve thermal balance and make the wall thickness of the cooling core uniform.
This achieved thermal balance in the castings, solved the problem of poor filling at the casting ends and on the inclined plane, improved casting quality and production efficiency, and reduced production costs.
Smart Images
Figure CN223699281U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold forming, and in particular to a mold with a novel cooling water channel structure. Background Technology
[0002] In the aluminum alloy die-casting process, molten metal solidifies and cools to the ejection temperature in the die-casting mold. The released heat is absorbed by the mold, while the mold dissipates the heat through radiation, conduction, and convection. For die-casting large, thick-walled parts, forced cooling is often used to maintain the mold's thermal balance, ensuring a balance between the heat entering and leaving the mold. This achieves efficient production, improves casting quality, and extends mold life. Water cooling is commonly used in die-casting molds due to its high efficiency and ease of operation. For the casting core, cooling water channels typically employ center-point cooling, spiral water cooling, or heating rods.
[0003] like Fig. 1-2 The image shows a casting produced by die casting mold according to this application. The casting cavity has a depth of 65mm and a diameter of φ82mm. A sloping surface with an inclination angle of 13° is provided in the center of the cavity. The wall thickness difference between the upper and lower parts of the sloping surface is 18mm, with a maximum wall thickness of 26mm. Generally, a large gate and a small gate are provided at the location of the sloping surface in the center of the casting and at the ends, respectively. The cooling water system for the core typically uses center-point cooling or a spiral cooling system.
[0004] In the process of developing the existing technology, the inventors discovered;
[0005] The gate near the middle of the casting generates more heat than the gate near the end. Using conventional cooling methods, the sloping surface of the casting cannot be effectively cooled, while the small gate area can cool normally, leading to poor filling of the sloping surface. Increasing the cooling water flow effectively cools the sloping surface, but the small gate area, due to its lower temperature, experiences poor molten metal flow at the end of the casting, causing poor filling of the end surface. Clearly, conventional cooling methods result in a temperature difference between the large and small gate areas, preventing thermal equilibrium. Furthermore, the cooling core near the sloping surface is also inclined, leading to faster cooling where the core wall is thicker and the core wall is thinner, and slower cooling where the core wall is thicker. This again contributes to poor filling of the sloping surface.
[0006] Therefore, this application provides a technical solution for a cooling water channel structure that balances the temperature difference during die casting and ensures the quality of the casting end and the swash plate surface. This solution addresses the problems in the prior art where the large temperature difference between the front and rear ends of the casting during die casting leads to poor final filling of the casting end surface and the swash plate surface, as well as poor filling of the swash plate surface caused by the thin wall thickness at the swash plate position. SUMMARY
[0007] The technical scheme of the cooling water channel structure provided by the embodiment of the application balances the temperature difference of the die-casting die, and ensures the quality of the end part and the inclined disc surface of the casting, so as to solve the problems of the poor filling of the end surface and the inclined disc surface of the casting and the poor filling of the inclined disc surface caused by the thin wall thickness of the inclined disc surface.
[0008] Specifically, a die with a novel cooling water channel structure comprises a fixed die plate, a movable die plate, a fixed die core, a movable die core, a sprue assembly installed on the fixed die plate and penetrating through the fixed die core to form a casting, and a core assembly installed between the fixed die core and the movable die core, wherein the core assembly comprises a casting core and a cooling core installed in the casting core, the cooling core is provided with an asymmetric circulating cooling water channel structure, the asymmetric circulating cooling water channel structure is provided with an annular water channel at one end of the cooling core close to the casting, an inlet at the other end, and an outlet on the side wall, and the end face of the cooling core provided with the annular water channel has the same inclination angle as the inclined disc surface of the casting.
[0009] Further, the annular water channel is also arranged on the side wall of the cooling core.
[0010] Further, the end face of the cooling core provided with the inlet is flush with the end face of one end of the casting core, and the end face of the casting core is provided with an outlet passage one.
[0011] Further, the inlet is connected with the annular channel through an inlet passage one, and the annular channel is connected with the outlet through an outlet passage two.
[0012] Further, the inlet passage is at least one.
[0013] Further, locking grooves are arranged at corresponding positions between the casting core and the cooling core, respectively, for locking the locking blocks in the locking grooves through screws.
[0014] At least two locking grooves are arranged on the casting core and the cooling core, respectively.
[0015] The technical scheme provided by the embodiment of the application has at least the following beneficial effects:
[0016] The mold with the novel cooling water path structure provided by the application is characterized in that an annular water channel is arranged on the end face of the cooling core close to the end of the casting, the heat of the middle part of the casting corresponding to the large sprue position is large, the cooling water flow is also large, the end part of the casting corresponding to the small sprue position is normally cooled, the heat balance is achieved, and the problem of poor filling of the casting is solved. Moreover, the end face of the cooling core provided with the annular water channel has the same inclination angle as the inclined surface of the casting, the inclination angle of the annular water channel on the end face of the cooling core is the same as the inclination angle of the inclined surface of the casting, the wall thickness of the cooling core corresponding to the position with the thick wall thickness and the thin wall thickness of the inclined surface is the same through the arrangement, the cooling speed is the same, and the problem of poor filling of the inclined surface of the inclined surface casting is solved. BRIEF DESCRIPTION OF DRAWINGS
[0017] The drawings described herein are used to provide further understanding of the application, constitute a part of the application, the illustrative embodiments of the application and the description thereof are used to explain the application, and do not constitute improper limitations on the application. In the drawings:
[0018] Fig. 1 The casting schematic diagram provided for the embodiments of the application;
[0019] Fig. 2 The A-A cross section schematic diagram of the casting provided for the embodiments of the application;
[0020] Fig. 3 The mold schematic diagram with the novel cooling water path structure provided for the embodiments of the application;
[0021] Fig. 4 The Fig. 3 The B-B cross section structure schematic diagram provided for the embodiments of the application;
[0022] Fig. 5 The cooling core and the asymmetric circulating cooling water path structure schematic diagram provided for the embodiments of the application;
[0023] Fig. 6 The asymmetric circulating cooling water path structure schematic diagram provided for the embodiments of the application;
[0024] Reference signs:
[0025] A mold with a novel cooling water path structure-100; a fixed mold core-1; a movable mold core-2; a sprue assembly-3; a core assembly-4; a casting core-40; a cooling core-41; an asymmetric circulating cooling water path structure-411; an annular water channel-4111; a water inlet-4112; a water outlet-4113; a first water outlet channel-4114; a first water inlet channel-4115; a second water outlet channel-4116; a locking groove-42; a locking block-43; a casting-5; an inclined surface-51. DETAILED DESCRIPTION
[0026] In order to make the purposes, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in combination with specific embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.
[0027] Please refer to Fig. 1-2 For the castings 5 to be produced by the die casting mold in the present embodiment, the metal liquid is poured to realize the forming of the castings 5 through the large gate at the position where the middle part is provided with the swash plate surface 51 and the small gate at the end part. In the prior art, the center point cooling or spiral waterway cooling is generally used. Due to the different heat at the positions of the large gate and the small gate, when the conventional cooling mode is used, the effective cooling at the position of the large gate cannot be realized, and when the cooling water speed is increased, the temperature at the position of the small gate is low, the metal liquid flows not smoothly, and the heat balance cannot be realized, and the problems of poor filling exist at the surface of the end part of the castings 5 and the surface of the swash plate surface 51. In addition, the cooling core 41 close to the swash plate surface 51 is also an inclined surface, which causes the cooling of the surface with thick wall thickness in the swash plate surface 51 of the castings 5 corresponding to the cooling core 41 to be fast, the cooling of the surface with thin wall thickness to be slow, and the problem of poor filling of the swash plate surface 51 of the castings 5 to be caused.
[0028] Based on the above problems, the present application provides a mold 100 with a novel cooling waterway structure, which comprises a fixed mold plate, a movable mold plate, a fixed mold core 1, a movable mold core 2, a gate assembly 3 installed on the fixed mold plate and penetrating through the fixed mold core 1 for forming the castings 5, a core assembly 4 installed between the fixed mold core 1 and the movable mold core 2, the core assembly 4 comprising a casting core 40 and a cooling core 41 installed in the casting core 40, the cooling core 41 being provided with an asymmetric circulating cooling waterway structure 411, the asymmetric circulating cooling waterway structure 411 being provided with a ring-shaped water channel 4111 at one end of the cooling core 41 close to the castings 5, an inlet 4112 at the other end, and an outlet 4113 on the side wall, and the end face of the cooling core 41 provided with the ring-shaped water channel 4111 having the same inclination angle as the swash plate surface 51 of the castings 5.
[0029] Specifically, the fixed mold plate (not shown in the figure), the movable mold plate (not shown in the figure), the fixed mold core 1, the movable mold core 2, the gate assembly 3 and the core assembly 4 in the mold with the novel cooling waterway structure provided by the present application all belong to the prior art for the person skilled in the art. The present application improves the cooling waterway structure in the core assembly 4 on the basis of the prior art, and then solves the technical problems to be solved by the present application. Therefore, the prior art will not be described in detail, and only the related part of the cooling waterway structure will be described in detail.
[0030] Specifically, the gating system 3 in the present application is divided into a large gate and a small gate when forming the casting 5. The large gate corresponds to the position of the swash plate surface 51 in the middle of the casting 5, and the small gate corresponds to the position of one of the two ends of the casting 5. In order to achieve thermal balance at the positions of the middle and the end of the casting 5, an asymmetric circulating cooling water channel structure is provided, that is, a ring-shaped water channel 4111 is arranged near one end of the cooling core 41 close to the casting 5, the water flow near the one end of the casting 5 is increased, and then the cooling of the position of the swash plate surface 51 in the middle of the casting 5 corresponding to the large gate is realized. The problem of poor filling of the middle or end of the casting 5 caused by the inability to achieve thermal balance due to the large heat of the large gate pouring and the low temperature of the small gate position caused by the large cooling water speed is solved.
[0031] Further, the ring-shaped water channel 4111 is also arranged on the side wall of the cooling core 41. It can be understood that if the ring-shaped water channel 4111 arranged on the end face of one end of the cooling core 41 can achieve thermal balance, it is not necessary to be arranged on the side wall of the cooling core 41, otherwise, it is arranged to achieve thermal balance.
[0032] It can also be understood that the ring-shaped water channel 4111 can also be arranged only on the side wall of the cooling core 41. That is, it can be understood that the ring-shaped water channel 4111 is not arranged on one end of the cooling core 41, but only on a certain section of the side wall of the cooling core 41. Obviously, it can be imagined that this setting is considered that if the gate is not arranged on one end of the cooling core 41 but on the position of the side wall of the cooling core 41, obviously, it is only necessary to be arranged on the side wall.
[0033] It should be pointed out that the end face of the cooling core 41 on which the ring-shaped water channel 4111 is arranged has the same inclination angle as the inclination angle of the swash plate surface 51 of the casting 5. That is, the inclination angle of the ring-shaped water channel 4111 arranged on the end face of the cooling core 41 is the same as the inclination angle of the swash plate surface 51 of the casting 5. Compared with the conventional cooling water channel, the wall thickness of the cooling core 41 corresponding to the positions of the thick and thin walls of the swash plate surface 51 of the casting 5 is the same, so that the cooling speed is the same, thereby avoiding the problem of poor filling of the casting 5.
[0034] Further, the end face of the cooling core 41 on which the water inlet 4112 is arranged is flush with the end face of one end of the casting core 40, and the end face of the casting core 40 is provided with a water outlet passage one 4114.
[0035] Specifically, the water outlet 4113 of the cooling core 41 realizes the final outflow of the cooling water through the water outlet passage one 4114 of the casting core 40. Then it prepares for the next cycle into the water inlet 4112.
[0036] Further, the water inlet 4112 and the ring-shaped channel are connected through a water inlet passage one 4115, and the ring-shaped channel and the water outlet 4113 are connected through a water outlet passage two 4116.
[0037] Specifically, the water inlet 4112 is connected with the water inlet channel one 4115, and the water outlet 4113 is connected with the water outlet channel two 4116, so as to realize the inflow and outflow of the cooling water path structure in the cooling core 41.
[0038] Further, the water inlet channel is at least one. It can be understood that on the basis of the above improvement, the water inlet channel can be one or multiple. It can be understood that the number of water inlet channels is set according to the size of the gate heat.
[0039] Further, locking grooves 42 are respectively arranged at corresponding positions between the casting core 40 and the cooling core 41, and locking blocks 43 are locked in the locking grooves 42 through screws; at least two locking grooves 42 are respectively arranged on the casting core 40 and the cooling core 41.
[0040] Specifically, the locking blocks 43 are locked in the locking grooves 42 through the screws, so as to realize the fixation of the casting core 40 and the cooling core 41. It can also be understood that the end face of the cooling core 41 has the same inclination angle as the inclined disc surface 51 of the casting 5, so that when the cooling core 41 is installed on the casting core 40, if the installation position is not correct, the cooling core 41 cannot be installed through the locking blocks 43.
[0041] It should be pointed out that the present application can be specifically manifested in the actual application scene as follows: in the die casting production, the cooling water source is connected through the water inlet 4112, then flows into the annular water channel 4111 through the water inlet channel one 4115, and finally flows out of the water outlet 4113 through the water outlet channel two 4116 and the water outlet channel one 4114 of the casting core 40. Through the asymmetric circulating cooling water path structure 411 of the present application, the mold temperature difference of the casting 5 during die casting is balanced, and the filling problem of the end surface and the inclined disc surface 51 of the casting 5 is solved. Thus, the casting 5 with high quality is obtained, the production efficiency is improved, and the production cost is reduced.
[0042] It should be pointed out that the terms “comprising”, “including” or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the phrase “including a…” does not exclude the presence of additional identical elements in the process, method, article or device including the element.
[0043] The above merely provides an example of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the scope of claims of the present application.
Claims
1. A mold having a novel cooling water path structure, comprising a fixed mold plate, a movable mold plate, a fixed mold core, a movable mold core, a gate assembly installed to the fixed mold plate to pass through the fixed mold core for molding a casting, and a core assembly installed between the fixed mold core and the movable mold core, characterized in that, The core assembly comprises a casting core and a cooling core installed in the casting core, the cooling core is provided with an asymmetric circulating cooling water channel structure, the asymmetric circulating cooling water channel structure is provided with a ring-shaped water channel at one end of the cooling core close to the casting, an inlet at the other end, and an outlet on the side wall, and the end face of the cooling core provided with the ring-shaped water channel has the same inclination angle as the inclined surface of the casting.
2. The mold having a novel cooling water path structure according to claim 1, characterized by The ring-shaped water channel is also provided on the side wall of the cooling core.
3. The mold having a novel cooling water path structure according to claim 1, characterized in that, The end face of the cooling core provided with the inlet is flush with the end face of one end of the casting core, and the end face of the casting core is provided with an outlet passage one.
4. The mold having a novel cooling water path structure according to Claim 1, wherein The inlet and the ring-shaped channel are connected through an inlet passage one, and the ring-shaped channel and the outlet are connected through an outlet passage two.
5. The mold having a novel cooling water path structure according to claim 4, wherein The inlet passage is at least one.
6. The mold having a novel cooling water path structure according to claim 1, wherein Locking grooves are respectively formed in corresponding positions between the casting core and the cooling core, and locking blocks are locked in the locking grooves through screws. At least two locking grooves are respectively formed in the casting core and the cooling core.