A precision casting equipment for automobile engine cylinder blocks

Abstract

This application provides a precision casting device for automobile engine cylinder blocks, relating to engine cylinder blocks, including an upper casting mold and a lower casting mold. The top of the upper casting mold has a pouring end, and a pouring element is fixed at the outer end of the pouring end; the pouring element includes a pouring groove. This application, through the setting of a check valve, achieves the following: when casting is not required, the overflow channel on the sliding seat can be placed in the sealing cavity by the action of a spring, thus sealing the overflow channel. Simultaneously, during casting, the downward pressure of the pouring end compresses the spring, causing the overflow channel on the sealing block to slide into the overflow cavity, opening the overflow channel and allowing material input. Furthermore, during the input process, in conjunction with the spiral conveyor groove, concentrated material can be dispersed around the perimeter, reducing the impact force during input and preventing prolonged concentrated impact on a single area within the mold, which could affect its actual application accuracy.

Description

Technical Field

[0001] This invention relates to the field of automobile engine cylinder blocks, and more specifically, to a precision casting apparatus for automobile engine cylinder blocks. Background Technology

[0002] The cylinder block is the basic structure of an engine and an important component of the engine block assembly. Located between the cylinder head and the oil pan, the cylinder block should strictly be called the cylinder block-crankcase! This is because its upper part contains one or more cylinders, and its lower part is the crankcase that supports the crankshaft. These two parts are generally cast together, and we usually simply call it the cylinder block. Depending on the mounting plane of the cylinder block and the oil pan, it can be divided into three types: general-purpose cylinder block, gantry cylinder block, and tunnel cylinder block. Because of the high temperature and pressure conditions under which the cylinder block operates, and the significant friction caused by the reciprocating motion of the piston, the cylinder block must be resistant to high temperatures, corrosion, and wear. Generally speaking, the following measures can be taken to meet these requirements: cylinder block material, machining precision, and structure. In terms of cooling, cylinder blocks are generally water-cooled or air-cooled.

[0003] Currently, the casting process of automobile engine cylinder blocks involves casting equipment. Conventional casting equipment usually consists of an upper mold and a lower mold. The combined molds form the shape of the engine cylinder block. Material is poured into the gating gate, and after cooling, the casting of the automobile engine cylinder block is completed. However, in practical applications, it has been found that since traditional gating gates are mostly just single pipe openings, they cannot effectively mitigate the impact force during the casting process, which can easily lead to material splashing. Furthermore, if the material directly impacts the inside of the mold, it can easily cause wear at the drop point over time, affecting the actual high-precision casting of the mold. Therefore, we have made improvements and proposed a precision casting equipment for automobile engine cylinder blocks. Summary of the Invention

[0004] The purpose of this invention is to provide a precision casting equipment for automobile engine cylinder blocks. By setting a flow diversion element, it solves the problem that if the material directly impacts the inside of the mold, it will easily cause wear at the drop point over time, affecting the actual high-precision casting of the mold.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0006] A precision casting device for automobile engine cylinder blocks includes an upper casting mold and a lower casting mold. The top of the upper casting mold has a pouring end, and a pouring element is fixed at the outer end of the pouring end.

[0007] The casting element includes a casting groove, which connects the outside to the inside of the casting mold. The casting groove is divided into a docking cavity, an overflow cavity, and a buffer cavity from top to bottom.

[0008] The docking cavity is equipped with a check valve element, which allows for material input and pouring by corresponding with the external pouring end.

[0009] A sealing cavity is connected between the docking cavity and the overflow cavity. The sealing cavity is used for assembling the lower half of the check element structure. The check element includes a sealing block slidably disposed inside the sealing cavity, a spiral conveying groove formed inside the sealing block, and a reset member connected to the top of the sealing block and slidably assembled with the docking cavity.

[0010] The sealing block has overflow channels on both sides for connecting with the spiral conveying trough. Under the action of the reset component, the overflow channels are located inside the sealing cavity in the natural state, so that the spiral conveying trough is in a closed state.

[0011] As a preferred technical solution of this application, the reset component includes a sliding seat fixed to the top of the sealing block, and both sides of the sliding seat have outwardly extending arms for sliding assembly with the side wall of the docking cavity.

[0012] The top of the spiral conveying groove extends toward the sliding seat and forms a mating position for connection with an external pouring end.

[0013] As a preferred technical solution of this application, the reset component further includes a spring sleeved on the surface of the sliding seat, one end of the spring being connected to the bottom of the extension arm and the other end being fixed to the bottom wall of the docking cavity.

[0014] As a preferred technical solution of this application, a transition cavity is further connected between the overflow cavity and the buffer cavity, and a flow diversion element is provided inside the transition cavity;

[0015] The diversion element includes an overflow plate fixed inside the transition cavity. The surface of the overflow plate has an annular groove, and a through groove is provided inside the annular groove. The through groove allows the upper and lower sides of the overflow plate to communicate with each other.

[0016] As a preferred technical solution of this application, the sidewall of the overflow cavity has a groove, and the groove can make the overall inner diameter of the overflow cavity larger than that of the sealing cavity.

[0017] As a preferred technical solution of this application, the diversion element further includes a plurality of spiral return pipes, the ends of the plurality of spiral return pipes being connected to corresponding through slots, and the other end of the spiral return pipe being connected to the top of the upper casting mold.

[0018] As a preferred technical solution of this application, a voltage regulating element is provided between the shunt element and the blocking block.

[0019] As a preferred technical solution of this application, the pressure regulating element includes a sleeve connected to the bottom of the sealing block, a slide rod slidably disposed inside the sleeve, and a trapezoidal block connected to the bottom end of the slide rod;

[0020] The trapezoidal block has slidable sealing components on both sides.

[0021] As a preferred technical solution of this application, the sealing component includes a transmission rod slidably disposed in the overflow plate, and a triangular block and a sealing piston are respectively connected to both ends of the transmission rod.

[0022] As a preferred technical solution of this application, a receiving groove is provided in the overflow plate near the through groove, and the sealing piston is located in the receiving groove. Under the action of the trapezoidal block, the triangular block can drive the transmission rod to drive the sealing piston to slide toward the through groove.

[0023] The transmission rod is also fitted with a return spring, one end of which is connected to one side of the sealing piston and the other end is connected to the side wall of the receiving groove.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] In the scheme of this application:

[0026] 1. By setting a check valve, when casting is not required, the overflow channel on the sliding seat can be placed in the sealing cavity with the help of the spring, so that the overflow channel is sealed. At the same time, when casting is performed, the spring can be compressed by pressing down the pouring end, so that the overflow channel on the sealing block can slide into the overflow cavity, opening the overflow channel and realizing the input of material. During the input process, in conjunction with the spiral conveyor, the concentrated material can be dispersed around, reducing the impact force during input and avoiding long-term concentrated impact on a certain part of the mold, which would affect the actual application accuracy.

[0027] 2. Through the design of the diversion element, after the material is input into the overflow chamber, it can be guided horizontally by the annular groove, and the through groove on it can output the material inside the spiral return pipe. In addition, the design of multiple spiral return pipes further realizes the casting dispersion of the material and achieves better protection of the mold.

[0028] 3. By using the pressure regulating element, when the pressure is high during material conveying at the pouring end, the sealing block under high pressure will slide further into the overflow chamber. The sliding sealing block will work with the pressure regulating element to make the sealing piston slide into the through groove, thereby reducing the inner diameter of the through groove and reducing the amount of material passing through. This reduces the amount of material flowing out when the pressure is too high, further protecting the mold. Attached Figure Description

[0029] Figure 1 A schematic diagram of the structure of a precision casting equipment for automobile engine cylinder blocks provided in this application;

[0030] Figure 2 This application provides a schematic diagram of the gating element structure for a precision casting equipment used in automobile engine cylinder blocks;

[0031] Figure 3 This application provides a schematic diagram of the gating element structure of a precision casting equipment for automobile engine cylinder blocks;

[0032] Figure 4 This application provides a cross-sectional structural diagram of a gating element for a precision casting equipment used in automobile engine cylinder blocks;

[0033] Figure 5 A schematic diagram of a sliding seat structure for a precision casting equipment for an automobile engine cylinder block is provided in this application;

[0034] Figure 6 A schematic diagram of an overflow plate structure for a precision casting equipment for an automobile engine cylinder block is provided in this application;

[0035] Figure 7 A schematic diagram of a pressure regulating element structure for a precision casting equipment for an automobile engine cylinder block is provided in this application;

[0036] Figure 8 This application provides a precision casting equipment for automobile engine cylinder blocks. Figure 7 Enlarged structural diagram at point A in the middle.

[0037] The image shows:

[0038] 1. Casting upper mold; 2. Gating element; 3. Check valve element; 4. Gating end; 5. Flow divider element; 6. Pressure regulating element;

[0039] 11. Pouring end; 12. Lower casting mold;

[0040] 21. Irrigation trough;

[0041] 210. Docking cavity; 211. Overflow cavity; 212. Buffer cavity; 213. Sealing cavity; 214. Transition cavity;

[0042] 2110. Excavation;

[0043] 31. Blocking block; 32. Spiral conveyor trough; 33. Overflow channel; 34. Sliding seat; 35. Extending arm; 36. Docking position; 37. Spring;

[0044] 51. Overflow plate; 52. Annular groove; 53. Through groove; 54. Spiral return pipe;

[0045] 61. Sleeve; 62. Slide rod; 63. Trapezoidal block; 64. Transmission rod; 65. Triangular block; 66. Blocking piston; 67. Receiving groove; 68. Return spring. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0047] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0048] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0049] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0050] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0051] Please see Figures 1 to 8The present invention provides a technical solution: a precision casting equipment for automobile engine cylinder blocks, including an upper casting mold 1 and a lower casting mold 12, wherein the top of the upper casting mold 1 has a pouring end 11, and a pouring element 2 is fixed at the outer end of the pouring end 11.

[0052] The pouring element 2 includes a pouring groove 21, which connects the outside to the inside of the casting upper mold 1. The pouring groove 21 is divided into a docking cavity 210, an overflow cavity 211 and a buffer cavity 212 from top to bottom.

[0053] The docking cavity 210 is equipped with a check element 3, which can be used to input and pour materials in accordance with the external pouring end 4.

[0054] A sealing cavity 213 is connected between the docking cavity 210 and the overflow cavity 211. The sealing cavity 213 is used for assembling the lower half of the check element 3. The check element 3 includes a sealing block 31 slidably disposed inside the sealing cavity 213, a spiral conveying groove 32 formed inside the sealing block 31, and a reset member connected to the top of the sealing block 31 and slidably assembled with the docking cavity 210.

[0055] The sealing block 31 has overflow channels 33 on both sides for connecting with the spiral conveying groove 32. Under the action of the reset component, the overflow channels 33 are located inside the sealing cavity 213 in the natural state, so that the spiral conveying groove 32 is in a closed state.

[0056] The reset component includes a sliding seat 34 fixed to the top of the sealing block 31, and both sides of the sliding seat 34 have outwardly extending arms 35 for sliding assembly with the side wall of the docking cavity 210.

[0057] The top end of the spiral conveying groove 32 extends toward the sliding seat 34 and forms a docking position 36 for connecting with the external pouring end 4.

[0058] The reset component also includes a spring 37 sleeved on the surface of the sliding seat 34. One end of the spring 37 is connected to the bottom of the extension arm 35, and the other end is fixed to the bottom wall of the docking cavity 210. Supported by the spring 37, the sliding seat 34 in its natural state (not connected to the pouring end 4) is as follows: Figure 2 The state shown;

[0059] A transition cavity 214 is also connected between the overflow cavity 211 and the buffer cavity 212, and a diversion element 5 is provided inside the transition cavity 214.

[0060] The diversion element 5 includes an overflow plate 51 fixed inside the transition cavity 214. The surface of the overflow plate 51 has an annular groove 52, and the inside of the annular groove 52 is provided with a through groove 53. The overflow plate 51 can be connected to the upper and lower sides by the through groove 53. Through the design of the annular groove 52, the pouring material in the overflow cavity 211 can be guided to flow along the direction of the annular groove 52, so as to evenly cover the surface of the corresponding through groove 53, and be discharged to the outside through multiple independent through grooves 53 to divert the flow. This avoids the situation where the discharge pressure is too high when the flow is concentrated from a certain place, which can easily cause long-term wear on a certain point in the mold.

[0061] The sidewall of the overflow cavity 211 has a groove 2110. The groove 2110 allows the overall inner diameter of the overflow cavity 211 to be larger than that of the sealing cavity 213. After the sealing block 31 moves down into the overflow cavity 211 (e.g., ...), Figure 4 As shown), under the action of the trench 2110, the outer end of the overflow channel 33 on the sealing block 31 will not be closed by the sealing effect of the sealing cavity 213, so the pouring material can be smoothly discharged.

[0062] The diversion element 5 also includes a plurality of spiral return pipes 54, the ends of which are respectively connected to the corresponding through grooves 53, and the other end of the spiral return pipe 54 is connected to the top of the upper casting mold 1.

[0063] A voltage regulating element 6 is provided between the shunt element 5 and the blocking block 31;

[0064] The pressure regulating element 6 includes a sleeve 61 connected to the bottom of the sealing block 31 and a trapezoidal block 63 connected to the bottom end of the sleeve 61, wherein sealing elements are slidably provided on both sides of the trapezoidal block 63;

[0065] The sealing component includes a transmission rod 64 slidably disposed within the overflow plate 51, with a triangular block 65 and a sealing piston 66 respectively connected to both ends of the transmission rod 64;

[0066] An accommodating groove 67 is provided in the overflow plate 51 near the through groove 53. The blocking piston 66 is located in the accommodating groove 67. Under the action of the trapezoidal block 63, the triangular block 65 drives the transmission rod 64 to drive the blocking piston 66 to slide towards the through groove 53.

[0067] The transmission rod 64 is also fitted with a return spring 68, one end of which is connected to one side of the sealing piston 66 and the other end is connected to the side wall of the receiving groove 67.

[0068] In practical applications, one end of the external pouring end 4 is inserted into the docking cavity 211 in the corresponding pouring element 2. Then, by pressing down the pouring end 4, the sealing block 31 moves down. The overflow channel 33 on the sealing block 31 moves into the overflow cavity 211. Since the overflow cavity 211 is affected by the groove 2110, the inner wall of the groove 2110 will not block the overflow channel 33. At this time, the material that is not blocked will flow back into the overflow cavity 211 through the overflow channel 33 by the conveying of the spiral conveying groove 32.

[0069] During the above-mentioned material input process, the material will be conveyed by the spiral conveyor 32, thereby buffering the impact force. The material input into the overflow channel 33 through the spiral conveyor 32 will also be further reduced by the grooving 2110.

[0070] After the material is conveyed into the overflow chamber 211, it will be input into the through groove 53 through the annular groove 52. The material in the through groove 53 will be discharged into the mold through the corresponding spiral return pipe 54 for casting. Since there are multiple spiral return pipes 54, the liquid discharged in a concentrated manner can be further dispersed and discharged independently.

[0071] During the aforementioned process of conveying the casting liquid, if the liquid pressure further increases, the corresponding sealing block 31 will continue to move downwards. This downward movement of the sealing block 31 will cause the sleeve 61 above it to move downwards as well. The moving sleeve 61 will cause the trapezoidal block 63 to come into contact with the triangular blocks 65 on both sides. The triangular blocks 65, subjected to this contact, will slide outwards. During this sliding process, the triangular blocks 65, through the transmission rod 64 above them, cause the sealing piston 66 in the receiving groove 67 to slide inside the through groove 53. The sealing piston 66 sliding inside the through groove 53 will hinder the flow and fall of the material, thereby slowing down the material flow when the material injection impact force is large, thus reducing the discharge pressure at the discharge end. Combined with the design of the pressure regulating element, this further realizes the pressure regulating element of the device, preventing materials with impact force from directly impacting the inside of the mold during the casting of automobile engine cylinder blocks, thus affecting the mold casting accuracy. When the pressure approaches a normal equilibrium state, it is then controlled by the return spring 68. The force can also cause the sealing piston 66 to slide in the receiving groove 6 to reset, so that the pouring solution under normal pressure can be discharged at a normal flow rate without causing impact wear to the mold.

[0072] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. A precision casting equipment for automobile engine cylinder blocks, characterized in that, It includes an upper casting mold (1) and a lower casting mold (12). The upper casting mold (1) has a pouring end (11) at its top, and a pouring element (2) is fixed at the outer end of the pouring end (11). The pouring element (2) includes a pouring groove (21), which connects the outside to the inside of the casting upper mold (1). The pouring groove (21) is divided into a docking cavity (210), an overflow cavity (211) and a buffer cavity (212) from top to bottom. The docking cavity (210) is equipped with a check element (3), which can be used to input and pour materials in accordance with the external pouring end (4) under the action of the check element (3); A sealing cavity (213) is connected between the docking cavity (210) and the overflow cavity (211). The sealing cavity (213) is used for assembling the lower half of the check element (3). The check element (3) includes a sealing block (31) slidably disposed inside the sealing cavity (213), a spiral conveying groove (32) formed inside the sealing block (31), and a reset member connected to the top of the sealing block (31) and slidably assembled with the docking cavity (210). The sealing block (31) has overflow channels (33) on both sides for connecting with the spiral conveying groove (32). Under the action of the reset component, the overflow channels (33) are located inside the sealing cavity (213) in the natural state, so that the spiral conveying groove (32) is in a closed state.

2. The precision casting equipment for automobile engine cylinder blocks according to claim 1, characterized in that, The reset component includes a sliding seat (34) fixed to the top of the sealing block (31), and both sides of the sliding seat (34) have outwardly extending arms (35) for sliding assembly with the side wall of the docking cavity (210). The top of the spiral conveying groove (32) extends toward the sliding seat (34) and forms a mating position (36) for connecting with the external pouring end (4).

3. The precision casting equipment for automobile engine cylinder blocks according to claim 2, characterized in that, The reset component also includes a spring (37) sleeved on the surface of the sliding seat (34), one end of the spring (37) being connected to the bottom of the extension arm (35), and the other end being fixed to the bottom wall of the docking cavity (210).

4. The precision casting equipment for automobile engine cylinder blocks according to claim 1, characterized in that, A transition chamber (214) is also connected between the overflow chamber (211) and the buffer chamber (212), and a diversion element (5) is provided inside the transition chamber (214). The diversion element (5) includes an overflow plate (51) fixed inside the transition cavity (214). The surface of the overflow plate (51) has an annular groove (52), and the inside of the annular groove (52) is provided with a through groove (53). The overflow plate (51) can be connected to the upper and lower sides by the through groove (53).

5. The precision casting equipment for automobile engine cylinder blocks according to claim 4, characterized in that, The sidewall of the overflow cavity (211) has a groove (2110), and the groove (2110) can make the overall inner diameter of the overflow cavity (211) larger than that of the sealing cavity (213).

6. The precision casting equipment for automobile engine cylinder blocks according to claim 5, characterized in that, The diversion element (5) also includes a plurality of spiral return pipes (54), the ends of which are respectively connected to the corresponding through grooves (53), and the other end of the spiral return pipe (54) is connected to the top of the casting upper mold (1).

7. A precision casting equipment for automobile engine cylinder blocks according to claim 6, characterized in that, A voltage regulating element (6) is provided between the shunt element (5) and the blocking block (31).

8. The precision casting equipment for automobile engine cylinder blocks according to claim 7, characterized in that, The pressure regulating element (6) includes a sleeve (61) connected to the bottom of the sealing block (31) and a trapezoidal block (63) connected to the bottom end of the sleeve (61). The trapezoidal block (63) has a sealing component slidably provided on both sides.

9. A precision casting equipment for automobile engine cylinder blocks according to claim 8, characterized in that, The sealing component includes a transmission rod (64) slidably disposed within the overflow plate (51), with a triangular block (65) and a sealing piston (66) respectively connected to both ends of the transmission rod (64).

10. A precision casting equipment for automobile engine cylinder blocks according to claim 9, characterized in that, An accommodating groove (67) is provided in the overflow plate (51) near the through groove (53). The sealing piston (66) is located in the accommodating groove (67). Under the action of the trapezoidal block (63), the triangular block (65) drives the transmission rod (64) to drive the sealing piston (66) to slide towards the through groove (53). The transmission rod (64) is also fitted with a return spring (68), one end of which is connected to one side of the sealing piston (66), and the other end is connected to the side wall of the receiving groove (67).

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