Automatic sand core forming mold and sand core production equipment
By designing automated sand core forming molds and production equipment, and utilizing lifting mechanisms and guiding systems to achieve automated sand core forming and demolding, the problems of low efficiency and poor safety in manual manufacturing have been solved, realizing efficient and safe fully automated production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU TIANHONG MACHINERY IND
- Filing Date
- 2025-04-29
- Publication Date
- 2026-05-01
AI Technical Summary
In existing technologies, manual manufacturing of sand cores is inefficient and cannot meet the production needs of automated casting equipment, and the safety of workers cannot be guaranteed.
Design an automated sand core forming mold, including an upper mold and a lower mold. The first and second lifting mechanisms drive the lifting column to realize the automated forming and demolding of the sand core. The limiting frame and guide column are combined to ensure the stability of the mold. Telescopic force-bearing components and through-hole components are used for opening. The core making chamber and sand injection mechanism are equipped to realize fully automated production.
It improves the efficiency of sand core forming, avoids manual operation, ensures the safety of workers, solves the problem of sand cores being difficult to remove after forming, and realizes fully automated production.
Smart Images
Figure CN224182010U_ABST
Abstract
Description
An automated sand core forming mold and sand core production equipment Technical Field
[0001] This utility model relates to the field of sand core forming equipment for castings, and in particular to an automated sand core forming mold and sand core production equipment. Background Technology
[0002] In recent years, with the increasing popularity of automobiles, the processing and casting of automotive parts has gradually shifted from manual labor to machine tools and automated equipment. In the casting process, sand core casting is widely used due to its low cost, high temperature resistance, and good plasticity. Currently, before casting, loose sand often needs to be manually shaped. This involves manually creating a mold with a sand core shape, filling it with the sand core, pressing the mold together, and then removing the core and transferring it to the next casting station. However, with the widespread use of automated casting equipment, manual sand core manufacturing can no longer meet production efficiency requirements or guarantee the safety of the working environment. Therefore, there is an urgent need to provide an automated sand core forming mold and sand core production equipment to solve these problems. Summary of the Invention
[0003] Therefore, there is a need for an automated sand core forming mold and sand core production equipment that offers high production efficiency and ensures personnel safety.
[0004] To achieve the above objectives, the inventors provide an automated sand core forming mold, comprising: an upper mold and a lower mold;
[0005] The upper surface of the lower mold and the lower surface of the upper mold are provided with sand core grooves adapted to the forming sand core. A first lifting mechanism is provided above the upper mold. A plurality of first through holes are provided in the sand core groove of the lower mold. A movable seat is provided at the bottom of the lower mold. A plurality of lifting columns are provided on the movable seat. The lifting columns extend through the first through holes and lift into the sand core groove of the lower mold. A second lifting mechanism is provided below the movable seat. The second lifting mechanism is drivenly connected to the movable seat.
[0006] As a preferred structure of this utility model, a limiting frame is provided on the bottom outer periphery of the lower mold, the movable seat is disposed in the limiting frame, a plurality of guide posts are provided in the limiting frame, a plurality of guide holes are provided on the movable seat, and the guide holes are sleeved on the guide posts.
[0007] As a preferred structure of this utility model, the limiting frame is further provided with a fixed seat, which is located between the movable seat and the lower mold. The fixed seat has several second through holes, through which the lifting column passes and is fixedly connected to the movable seat, and one end of the guide column is fixedly connected to the fixed seat.
[0008] As a preferred structure of this utility model, the sand core formed by the sand core groove is adapted to the vehicle subframe, and the lower mold is provided with a subframe opening mechanism, which includes a telescopic force-bearing component and a telescopic through-hole component.
[0009] As a preferred structure of this utility model, a first mounting groove is provided on one side of the lower mold, and the telescopic force-bearing component is disposed in the first mounting groove. The telescopic force-bearing component includes a first driving cylinder, a first floating connector and a force-bearing seat. The first floating connector is connected to the telescopic end of the first driving cylinder, and the force-bearing seat is connected to the first floating connector and extends into the sand core groove.
[0010] As a preferred structure of this utility model, a second mounting groove is provided on the other side of the lower mold opposite to the telescopic force-bearing component. The telescopic through-hole component is located in the second mounting groove. The telescopic through-hole component includes a second driving cylinder, a second floating connector and a through-hole head. The telescopic end of the second driving cylinder is connected to the second floating connector, the second floating connector is connected to the through-hole head, and the through-hole head extends into the sand core groove.
[0011] As a preferred structure of this utility model, sealing rings are provided at the connection points of the first mounting groove, the second mounting groove and the sand core groove.
[0012] To achieve the above objectives, the inventors also provide an automated sand core production equipment, comprising: a core-making chamber and an automated sand core forming mold as described in any one of the above inventions;
[0013] The first lifting mechanism is located on the top of the core-making machine compartment, and the second lifting mechanism is located on the worktable below the movable seat.
[0014] As a preferred structure of this utility model, the core-making machine compartment is also provided with a sand injection mechanism.
[0015] Unlike existing technologies, the above-mentioned technical solution achieves the following beneficial effects: This automated sand core forming mold and sand core production equipment can effectively improve the efficiency of sand core forming by setting up an automated driving pressing method for the upper and lower molds, and eliminates the need for manual participation in sand core manufacturing, thus keeping it away from working conditions and high-temperature environments and effectively ensuring personnel safety; In addition, the lower mold of this sand core mold can effectively solve the problem of the sand core being difficult to remove after forming by setting a first through hole at the bottom of the sand core groove of the lower mold and several lifting columns passing through the first through hole. That is, after the sand core is formed, this mold drives the movable seat to move upward through the first lifting mechanism, which drives several lifting columns to move upward, thereby lifting the formed sand core and enabling the sand core to be successfully demolded, making it easy for the external mechanical gripper to remove the sand core, further improving the sand core production efficiency. Attached Figure Description
[0016] Figure 1 is a partial structural diagram of the automated sand core forming mold described in a specific embodiment;
[0017] Figure 2 is a schematic diagram of the sand core groove structure described in the specific embodiment;
[0018] Figure 3 is a schematic diagram of the lifting column structure described in the specific embodiment;
[0019] Figure 4 is a schematic diagram of the movable seat installation structure according to a specific embodiment;
[0020] Figure 5 is a schematic diagram of the guide hole structure described in the specific embodiment;
[0021] Figure 6 is a schematic diagram of the installation structure of the fixed seat and the movable seat according to the specific embodiment;
[0022] Figure 7 is a schematic diagram of the structure of the first and second mounting slots in a specific embodiment;
[0023] Figure 8 is a schematic diagram of the structure of the first and second mounting slots in a specific embodiment;
[0024] Figure 9 is a schematic diagram of the telescopic force-bearing component and the telescopic through-hole component according to the specific embodiment;
[0025] Figure 10 is a schematic diagram of the core-making machine cabin structure according to a specific embodiment.
[0026] Explanation of reference numerals in the attached figures:
[0027] 1. Lower mold; 101. Sand core groove; 102. Movable seat; 103. Lifting column; 104. Limiting frame; 105. Fixed seat; 106. Guide column; 107. Guide hole; 108. First mounting groove; 109. Second mounting groove; 110. Sealing ring; 2. Telescopic force-bearing component; 201. First drive cylinder; 202. First floating connector; 203. Force-bearing seat; 3. Telescopic through-hole component; 301. Second drive cylinder; 302. Second floating connector; 303. Through-hole head; 4. Core-making machine chamber; 401. Worktable; 5. Sand core. Detailed Implementation
[0028] To explain in detail the technical content, structural features, objectives, and effects of the technical solution, the following description is provided in conjunction with specific embodiments and accompanying drawings.
[0029] As shown in Figures 1 and 2, this embodiment provides an automated sand core forming mold, including: an upper mold and a lower mold 1;
[0030] The upper surface of the lower mold 1 and the lower surface of the upper mold are provided with sand core grooves 101 adapted to the forming sand core. A first lifting mechanism is provided above the upper mold. Several first through holes are provided in the sand core groove 101 of the lower mold 1. A movable seat 102 is provided at the bottom of the lower mold 1. Several lifting columns 103 are provided on the movable seat 102. The lifting columns 103 extend into the sand core groove 101 of the lower mold 1 through the first through holes. A first lifting mechanism is provided below the movable seat 102. The first lifting mechanism is drivenly connected to the movable seat 102. In the specific implementation process of this embodiment, the upper mold (not shown in the figure) is first raised by the first lifting mechanism, and the lifting column 103 in the sand core groove 101 of the lower mold 1 is lowered into the first through hole. Then, molding sand is injected, and the first lifting mechanism drives the upper mold to cover the lower mold 1 for pressing. After pressing, the upper mold can be raised. At this time, the movable seat 102 can be moved upward by the second lifting mechanism, which drives the lifting column 103 to extend out of the first through hole, thereby lifting the formed sand core for other robotic arm grippers to pick up. After being picked up, the next round of sand core forming can be repeated. The entire sand core forming process can be fully automated, thereby effectively improving processing efficiency and ensuring personnel safety. In this embodiment, the specific structure of the upper mold can be set with reference to the structure of the lower mold 1. The sand core groove 101 set on the upper mold and the sand core groove 101 set on the lower mold 1 work together to form a complete sand core.
[0031] As shown in Figures 2 to 6, in order to facilitate the limiting of the movable seat 102, in some embodiments, a limiting frame 104 is provided on the bottom outer periphery of the lower mold 1, the movable seat 102 is located in the limiting frame 104, a plurality of guide posts 106 are provided in the limiting frame 104, and a plurality of guide holes 107 are provided on the movable seat 102, the guide holes 107 are sleeved on the guide posts 106; the movement direction of the movable seat 102 can be limited by the limiting frame 104, the guide posts 106, and the guide holes 107, so as to avoid the lifting column 103 from tilting to the side and making hard contact with the first through hole, causing mold damage and bending of the lifting column 103.
[0032] In addition, to facilitate the installation of the guide column 106 and further enhance the guidance of the lifting column 103, in this embodiment, a fixed seat 105 is also provided inside the limiting frame 104. The fixed seat 105 is located between the movable seat 102 and the lower mold 1. The fixed seat 105 has several second through holes. The lifting column 103 passes through the second through holes and is fixedly connected to the movable seat 102. One end of the guide column 106 is fixedly connected to the fixed seat 105. That is, the movable seat 102 is guided by the guide column 106 provided on the fixed seat 105. The lifting column 103 passes through the second through hole and the first through hole in sequence and extends into the sand core groove 101 of the lower mold 1, thereby further preventing the lifting column 103 from tilting to the side. If this happens, it will be stuck when passing through the second through hole, thereby preventing damage to the mold.
[0033] As shown in Figures 1, 7, 8, and 9, in different embodiments, this sand core forming mold can also be used to manufacture sand cores 5 for automobile subframes. That is, the sand core formed by the sand core groove 101 is adapted to the automobile subframe and used to manufacture the automobile subframe. In this case, since the automobile subframe in this embodiment has through holes, through holes need to be opened on the formed sand core when manufacturing the sand core. That is, a subframe opening mechanism is provided on the lower mold 1. The subframe opening mechanism includes a telescopic force-bearing component 2 and a telescopic through hole component 3. In this embodiment, the telescopic force-bearing component 2 and the telescopic through hole component 3 can cooperate to complete the sand core opening design.
[0034] In the above embodiment, a first mounting groove 108 is provided on one side of the lower mold 1, and a telescopic force-bearing component 2 is disposed in the first mounting groove 108. The telescopic force-bearing component 2 includes a first driving cylinder 201, a first floating connector 202, and a force-bearing seat 203. The first floating connector 202 is connected to the telescopic end of the first driving cylinder 201, and the force-bearing seat 203 is connected to the first floating connector 202 and extends into the sand core groove 101. On the other side of the lower mold 1 opposite to the telescopic force-bearing component 2, a second mounting groove 109 is provided, and a telescopic through-hole component 3 is disposed in the second mounting groove 109. The telescopic through-hole component 3 includes a second driving cylinder 301, a second floating connector 302, and a through-hole head 303. The telescopic end of the second driving cylinder 301 is connected to the second floating connector 302, and the second floating connector 302 is connected to the through-hole head 303. The through-hole head 303 extends into the sand core groove 101. In this embodiment, the first floating connector 202 and the second floating connector 302 can effectively prevent hard contact between the force-bearing seat 203 and the through-hole head 303, which could cause equipment damage, thus providing a floating gap. The cooperation between the force-bearing seat 203 and the through-hole head 303 allows for drilling of the sand core within the sand core groove 101. Furthermore, in some embodiments, to prevent sand leakage from occurring between the first mounting groove 108 and the second mounting groove 109 where the force-bearing seat 203 and the through-hole head 303 are located and the sand core groove 101, as shown in Figures 7 and 8, sealing rings 110 are respectively provided at the connection points between the first mounting groove 108, the second mounting groove 109, and the sand core groove 101 for sealing.
[0035] Figure 10 shows the state after the sand core is formed and removed from the core-making chamber 4. In this embodiment, an automated sand core production device is also provided, including: a core-making chamber 4 and an automated sand core forming mold as described in any of the above embodiments; a first lifting mechanism (not shown in the figure) is located on the top of the core-making chamber 4, and a second lifting mechanism (not shown in the figure) is located on the worktable 401 below the movable seat 102. A sand injection mechanism is also provided inside the core-making chamber 4. In the above embodiments, the first lifting mechanism and the second lifting mechanism can be linear drive mechanisms such as cylinders or hydraulic cylinders. An installation groove can be provided in the middle of the worktable 401 to house the second lifting mechanism; the sand injection mechanism (not shown in the figure) can be a sand injection pump; sand injection can be performed by lifting the upper mold and directly injecting molding sand into the lower mold 1, or by opening a sand injection hole on the mold that connects to the sand core groove 101 and injecting sand into the sand injection hole through the sand injection pump.
[0036] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of patent protection for this utility model.
Claims
1. An automated sand core forming mold, characterized in that, include: The upper mold and the lower mold are provided with sand core grooves adapted to the forming sand core on the upper surface and the lower surface of the upper mold. A first lifting mechanism is provided above the upper mold. A plurality of first through holes are provided in the sand core groove of the lower mold. A movable seat is provided at the bottom of the lower mold. A plurality of lifting columns are provided on the movable seat. The lifting columns extend into the sand core groove of the lower mold through the first through holes. A second lifting mechanism is provided below the movable seat. The second lifting mechanism is drivenly connected to the movable seat.
2. The automated sand core forming mold according to claim 1, characterized in that: The bottom outer periphery of the lower mold is provided with a limiting frame, the movable seat is located inside the limiting frame, the limiting frame is provided with a number of guide posts, the movable seat is provided with a number of guide holes, and the guide holes are sleeved on the guide posts.
3. The automated sand core forming mold according to claim 2, characterized in that: The limiting frame is also provided with a fixed seat, which is located between the movable seat and the lower mold. The fixed seat has several second through holes, through which the lifting column passes and is fixedly connected to the movable seat. One end of the guide column is fixedly connected to the fixed seat.
4. The automated sand core forming mold according to claim 1, characterized in that: The sand core formed by the sand core groove is adapted to the vehicle subframe. The lower mold is provided with a subframe opening mechanism, which includes a telescopic force-bearing component and a telescopic through-hole component.
5. The automated sand core forming mold according to claim 4, characterized in that: The lower mold has a first mounting groove on one side, and the telescopic force-bearing component is located in the first mounting groove. The telescopic force-bearing component includes a first driving cylinder, a first floating connector and a force-bearing seat. The first floating connector is connected to the telescopic end of the first driving cylinder, and the force-bearing seat is connected to the first floating connector and extends into the sand core groove.
6. The automated sand core forming mold according to claim 5, characterized in that: A second mounting groove is provided on the other side of the lower mold opposite to the telescopic force-bearing component. The telescopic through-hole component is located in the second mounting groove. The telescopic through-hole component includes a second driving cylinder, a second floating connector and a through-hole head. The telescopic end of the second driving cylinder is connected to the second floating connector, and the second floating connector is connected to the through-hole head. The through-hole head extends into the sand core groove.
7. The automated sand core forming mold according to claim 6, characterized in that: Sealing rings are provided at the connection points between the first mounting groove, the second mounting groove and the sand core groove.
8. An automated sand core production equipment, characterized in that, include: The core-making chamber and the automated sand core forming mold as described in any one of claims 1 to 7; The first lifting mechanism is located on the top of the core-making machine compartment, and the second lifting mechanism is located on the worktable below the movable seat.
9. The automated sand core production equipment according to claim 8, characterized in that: The core-making machine compartment is also equipped with a sand injection mechanism.