Precision casting equipment for automobile engine cylinder body

Abstract

The invention provides precision casting equipment for an automobile engine cylinder block, and relates to engine cylinder blocks, the precision casting equipment comprises an upper casting mold and a lower casting mold, the top of the upper casting mold is provided with a pouring end, and a pouring element is fixed to the outer end of the pouring end; the irrigation element comprises an irrigation groove. Through the arranged non-return element, when casting is not needed, the overflow channel on the sliding seat can be arranged in the plugging cavity under the action of the spring, so that the overflow channel is in a plugging state, meanwhile, when casting is conducted, the spring is compressed through downward pressing of the pouring end, and the overflow channel is blocked. The overflow channel on the blocking block is driven to slide into the overflow cavity to be opened, so that material input is achieved, in the input process, the spiral conveying groove is matched, concentrated materials can be dispersed all around, impact force generated during input is reduced, and the conveying efficiency of the materials is improved. And the influence on the actual application precision caused by concentrated long-time impact on a certain part in the mold is avoided.

Description

Technical Field

[0001] The invention relates to the field of automobile engine cylinder blocks, and in particular to a precision casting device for automobile engine cylinder blocks. Background Art

[0002] The cylinder block is the basic structure of the engine and an important part of the engine body group. Between the cylinder head and the oil pan, the cylinder block is strictly called the cylinder block - crankcase! Because it has one or more cylinders on the upper part and the crankcase supporting the crankshaft on the lower part, these two parts are generally cast together. We usually call it the cylinder block for short. According to the different installation plane positions of the cylinder block and the oil pan, it can be divided into 3 forms: general cylinder block, gantry cylinder block and tunnel cylinder block. Because its working conditions are high temperature and high pressure, and the piston reciprocates in it, the friction is very large, so the cylinder block must be able to withstand high temperature, corrosion and wear. Generally speaking, in order to meet the above requirements, the following measures can be taken: cylinder block material, processing accuracy, structure, in terms of cooling, the cylinder block is generally water-cooled and air-cooled.

[0003] At present, casting equipment is involved in the casting process of automobile engine cylinder blocks. Conventional casting equipment is usually composed of an upper mold and a lower mold. The combined molds together form the shape of the engine cylinder block, so that the material is poured at the casting port, and the casting of the automobile engine cylinder block can be completed after waiting for cooling. However, it is found in the actual application process that since most traditional pouring ports are only a single nozzle, when the material is actually cast, it cannot effectively reduce the impact force in the casting process, which easily causes material splashing, and if the material directly impacts the inside of the mold, it is easy to cause wear on the landing point over time, affecting the actual high-precision casting of the mold. Therefore, we have made improvements to this and proposed a precision casting equipment for automobile engine cylinder blocks. Summary of the invention

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

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions: A precision casting device for an automobile engine cylinder block, comprising an upper casting mold and a lower casting mold, wherein 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 comprises a pouring trough, through which the outside is connected with the inside of the upper casting mold, and the pouring trough is divided into a docking cavity, an overflow cavity and a buffer cavity from top to bottom; Wherein, a non-return element is installed in the docking cavity, and the non-return element can correspond to the external pouring end for input pouring of materials; A blocking cavity is connected between the docking cavity and the overflow cavity, and the blocking cavity is used for assembling the lower half structure of the non-return element, and the non-return element includes a blocking block slidably arranged inside the blocking cavity, a spiral conveying groove formed inside the blocking block, and a reset member connected to the top of the blocking block and slidably assembled with the docking cavity; Wherein, overflow channels are provided on both sides of the blocking block for communicating with the spiral conveying trough. Under the action of the reset member, the overflow channel is located inside the blocking cavity in a natural state, so that the spiral conveying trough is in a closed state.

[0006] As a preferred technical solution of the present application, the reset member includes a sliding seat fixed to the top of the blocking block, and arms are extended outward on both sides of the sliding seat for sliding assembly with the side wall of the docking cavity; The top end of the spiral conveying trough extends toward the sliding seat and is formed with a docking position for connecting with an external watering end head.

[0007] As a preferred technical solution of the present application, the reset member also includes a spring sleeved on the surface of the sliding seat, one end of the spring is connected to the bottom of the extension arm, and the other end is fixed to the bottom wall of the docking cavity.

[0008] As a preferred technical solution of the present application, a transition chamber is further connected between the overflow chamber and the buffer chamber, and a flow dividing element is provided inside the transition chamber; The diversion element includes an overflow plate fixed inside the transition chamber, a surface of the overflow plate is provided with an annular groove, and a through groove is opened inside the annular groove, and the upper and lower sides of the overflow plate can be connected to each other due to the action of the through groove.

[0009] As a preferred technical solution of the present application, the side wall of the overflow chamber has a groove, and the groove can make the overall inner diameter of the overflow chamber larger than the blocking chamber.

[0010] As a preferred technical solution of the present application, the diversion element also includes a plurality of spiral reflux tubes, the ends of the plurality of spiral reflux tubes are respectively connected to the corresponding through grooves, and the other end of the spiral reflux tube is connected to the top of the casting upper mold.

[0011] As a preferred technical solution of the present application, a pressure regulating element is provided between the diverter element and the blocking block.

[0012] As a preferred technical solution of the present application, the pressure regulating element includes a sleeve connected to the bottom of the blocking block, a sliding rod slidably arranged inside the sleeve, and a trapezoidal block connected to the bottom end of the sliding rod; Wherein, blocking pieces are slidably provided on both sides of the trapezoidal block.

[0013] As a preferred technical solution of the present application, the blocking member includes a transmission rod slidably arranged in the overflow disk, and both ends of the transmission rod are respectively connected to a triangular block and a blocking piston.

[0014] As a preferred technical solution of the present application, a receiving groove is provided in the overflow disc near the through groove, and the blocking 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 blocking piston to slide toward the through groove; Wherein, a return spring is also sleeved on the surface of the transmission rod, one end of the return spring is connected to one side of the blocking piston, and the other end is connected to the side wall of the accommodating groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the scheme of this application: 1. The check element is set to achieve that when casting is not required, the overflow channel on the sliding seat can be placed in the blocking cavity with the action of the spring, so that the overflow channel is blocked. 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 blocking block slides into the overflow cavity, so that the overflow channel is opened, thereby realizing the input of materials. In the process of input, the spiral conveying trough can be used to disperse the concentrated materials around, reduce the impact force during input, and avoid concentrated impact on a certain place in the mold for a long time, which affects its actual application accuracy. 2. Through the design of the diversion element, after the material is input into the overflow chamber, it can be guided in the horizontal plane through the annular groove, and the through groove on it can output the passing material into the spiral reflux pipe. In addition, with the design of multiple spiral reflux pipes, the casting dispersion of the material is further realized, and better protection of the mold is achieved; 3. By setting up the pressure regulating element, when the pressure is high during the material conveying process at the pouring end, the blocking block subjected to the high pressure will slide further into the overflow chamber, and the blocking block will cooperate with the pressure regulating element during sliding to make the blocking piston slide into the through groove to reduce the inner diameter of the through groove, thereby reducing the amount of material passing through, thereby reducing the outflow of material when the pressure is too high, and further protecting the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a precision casting device for an automobile engine cylinder block provided in this application; Figure 2 A schematic diagram of the structure of a pouring element for a precision casting device for an automobile engine cylinder block provided in this application; Figure 3A schematic diagram of the partial structure of a pouring element of a precision casting equipment for an automobile engine cylinder block provided in the present application; Figure 4 A schematic cross-sectional structure diagram of a pouring element for a precision casting device for an automobile engine cylinder block provided in the present application; Figure 5 A schematic diagram of a sliding seat structure of a precision casting device for an automobile engine cylinder block provided in the present application; Figure 6 A schematic diagram of the overflow plate structure of a precision casting device for an automobile engine cylinder block provided in this application; Figure 7 A schematic diagram of the structure of a pressure regulating element for a precision casting device for an automobile engine cylinder block provided in the present application; Figure 8 A precision casting device for an automobile engine cylinder block provided in this application Figure 7 Enlarged structural diagram at A in the middle.

[0017] Indicated in the figure: 1. Casting upper mold; 2. Pouring element; 3. Check element; 4. Pouring end; 5. Diverter element; 6. Pressure regulating element; 11. Pouring end; 12. Casting lower mold; 21. Watering trough; 210, docking chamber; 211, overflow chamber; 212, buffer chamber; 213, blocking chamber; 214, transition chamber; 2110, digging grooves; 31. Blocking block; 32. Screw conveying trough; 33. Overflow channel; 34. Sliding seat; 35. Spreading arm; 36. Docking position; 37. Spring; 51. overflow plate; 52. annular groove; 53. through groove; 54. spiral reflux pipe; 61. Sleeve; 62. Sliding rod; 63. Trapezoidal block; 64. Transmission rod; 65. Triangular block; 66. Sealing piston; 67. Accommodating groove; 68. Return spring. DETAILED DESCRIPTION

[0018] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0019] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] See also Figures 1 to 8 The present invention provides a technical solution: a precision casting device for an automobile engine cylinder block, comprising a casting upper mold 1 and a casting lower mold 12, wherein the top of the casting upper mold 1 has a pouring end 11, and a pouring element 2 is fixed at the outer end of the pouring end 11; The pouring element 2 includes a pouring trough 21, through which the outside is connected to the inside of the upper casting mold 1, and the pouring trough 21 is divided into a docking chamber 210, an overflow chamber 211 and a buffer chamber 212 from top to bottom; The docking cavity 210 is provided with a non-return element 3, and the non-return element 3 can correspond to the external pouring end 4 for inputting and pouring materials; A blocking cavity 213 is connected between the docking cavity 210 and the overflow cavity 211. The blocking cavity 213 is used for assembling the lower half structure of the non-return element 3. The non-return element 3 includes a blocking block 31 slidably arranged inside the blocking cavity 213, a spiral conveying groove 32 formed inside the blocking block 31, and a reset member connected to the top of the blocking block 31 and slidably assembled with the docking cavity 210. The two sides of the blocking block 31 are provided with overflow channels 33 for communicating with the spiral conveying groove 32. Under the action of the reset member, the overflow channel 33 is located inside the blocking cavity 213 in a natural state, so that the spiral conveying groove 32 is in a closed state. The reset member includes a sliding seat 34 fixed to the top of the blocking block 31, and both sides of the sliding seat 34 extend outward with extension arms 35 for sliding assembly with the side wall of the docking cavity 210; The top end of the spiral conveying groove 32 extends toward the sliding seat 34 and is formed with a docking position 36 for connecting with the external watering terminal 4; The reset member 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. Under the support of the spring 37, the sliding seat 34 is in a natural state (not connected to the watering end 4). Figure 2 The status shown; A transition chamber 214 is connected between the overflow chamber 211 and the buffer chamber 212, and a flow dividing element 5 is disposed inside the transition chamber 214; The diverter element 5 includes an overflow plate 51 fixed inside the transition cavity 214, and an annular groove 52 is provided on the surface of the overflow plate 51, and a through groove 53 is provided inside the annular groove 52. The through groove 53 enables the upper and lower sides of the overflow plate 51 to be connected to each other. Through the design of the annular groove 52, the casting material in the overflow cavity 211 can be diverted 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 a plurality of independent through grooves 53 for diversion, thereby avoiding the situation that when the discharge is concentratedly diverted from a certain place, the discharge pressure is too high, which is easy to cause long-term wear of a certain point in the mold; The side wall 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 the blocking cavity 213. After the blocking block 31 moves down into the overflow cavity 211 (such as Figure 4 As shown), at this time, due to the effect of the groove 2110, the outer end of the overflow channel 33 on the blocking block 31 will not be closed by the blocking effect of the blocking cavity 213, so the casting material can be smoothly discharged; The diversion element 5 further includes a plurality of spiral reflux pipes 54, the ends of which are respectively connected to the corresponding through grooves 53, and the other ends of the spiral reflux pipes 54 are connected to the top of the casting upper mold 1; A pressure regulating element 6 is provided between the diverter element 5 and the blocking block 31; The pressure regulating element 6 comprises a sleeve 61 connected to the bottom of the blocking block 31 and a trapezoidal block 63 connected to the bottom end of the sleeve 61, wherein blocking pieces are slidably provided on both sides of the trapezoidal block 63; The blocking member includes a transmission rod 64 slidably disposed in the overflow plate 51, and two ends of the transmission rod 64 are respectively connected to a triangular block 65 and a blocking piston 66; A receiving groove 67 is provided in the overflow plate 51 near the through groove 53, and the blocking piston 66 is located in the receiving groove 67. The trapezoidal block 63 can drive the triangular block 65 to drive the transmission rod 64 to drive the blocking piston 66 to slide toward the through groove 53. The surface of the transmission rod 64 is also sleeved with a return spring 68, one end of the return spring 68 is connected to one side of the blocking piston 66, and the other end is connected to the side wall of the receiving groove 67; In actual application, one end of the external pouring end head 4 is inserted into the docking cavity 211 in the corresponding pouring element 2, and then the pouring end head 4 is pressed downward to move the blocking block 31 downward, and the overflow channel 33 on the downwardly moved blocking 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 be transported by the spiral conveying groove 32 and flow back into the overflow cavity 211 through the overflow channel 33. During the above-mentioned material input process, the material will be spirally transported by the spiral conveying groove 32, thereby buffering the impact force, and the material input into the overflow channel 33 by the spiral conveying groove 32 will also be affected by the groove 2110 to further reduce the impact force; After the material is transported into the overflow cavity 211, the material is input into the through groove 53 through the annular groove 52. The material in the through groove 53 is discharged into the mold through the corresponding spiral reflux pipe 54 for casting. At this time, since there are multiple spiral reflux pipes 54, the concentrated discharged liquid can be further independently dispersed and discharged. In the above-mentioned process of conveying casting liquid, if the pressure of the liquid is further increased, the corresponding blocking block 31 will continue to move downward, and the blocking block 31 that continues to move downward will drive the sleeve 61 thereon to move downward, and the sleeve 61 that moves downward will drive the trapezoidal block 63 to form a conflict with the triangular blocks 65 on both sides, and the triangular blocks 65 that are subject to the conflict will slide outward. During the sliding process, the triangular block 65 causes the blocking piston 66 in the accommodating groove 67 to slide inside the through groove 53 through the transmission rod 64 thereon, and the blocking piston 66 sliding in the through groove 53 will hinder the flow and fall of the material, thereby slowing down the flow of the material when the impact force of the material injection is large, so as to reduce the discharge pressure at the discharge end, and then cooperate with the design of the pressure regulating element to further realize the pressure regulating element of the device, so that in the process of casting the automobile engine cylinder body, the material with impact force is prevented from directly impacting the inside of the mold, thereby affecting the casting accuracy of the mold, and when the pressure tends to a normal equilibrium state, it is affected by the reset spring 68 The force can also prompt the blocking piston 66 to slide in the receiving groove 6 to reset, so that the casting solution under normal pressure can be discharged at a normal flow rate without causing impact and wear to the mold.

[0024] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the invention are included in the scope of the claims of the present invention.

Claims

1. A precision casting equipment for automobile engine cylinder block, characterized in that: It comprises 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); The pouring element (2) comprises a pouring trough (21), the outside of which is connected to the inside of the upper casting mold (1) through the pouring trough (21), and the pouring trough (21) is divided into a docking chamber (210), an overflow chamber (211) and a buffer chamber (212) from top to bottom; A non-return element (3) is installed in the docking cavity (210), and the non-return element (3) can correspond to an external pouring end (4) to input and pour materials; A blocking cavity (213) is connected between the docking cavity (210) and the overflow cavity (211), and the blocking cavity (213) is used for assembling the lower half structure of the non-return element (3), the non-return element (3) comprising a blocking block (31) slidably arranged inside the blocking cavity (213), a spiral conveying groove (32) formed inside the blocking block (31), and a reset element connected to the top of the blocking block (31) and slidably assembled with the docking cavity (210); Wherein, overflow channels (33) are provided on both sides of the blocking block (31) for communicating with the spiral conveying groove (32); under the action of the reset member, the overflow channels (33) are located inside the blocking cavity (213) in a natural state, so that the spiral conveying groove (32) is in a closed state.

2. The precision casting equipment for automobile engine cylinder block according to claim 1, characterized in that: The reset member comprises a sliding seat (34) fixed to the top of the blocking block (31), and both sides of the sliding seat (34) are provided with outwardly extending extension arms (35) for slidingly assembling with the side wall of the docking cavity (210); The top end of the spiral conveying groove (32) extends toward the sliding seat (34) and is formed with a docking position (36) for connecting with an external watering end head (4).

3. The precision casting equipment for automobile engine cylinder block according to claim 2, characterized in that: The reset member further comprises 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).

4. The precision casting equipment for automobile engine cylinder block according to claim 1, characterized in that: A transition chamber (214) is further connected between the overflow chamber (211) and the buffer chamber (212), and a flow dividing element (5) is provided inside the transition chamber (214); The flow dividing element (5) comprises an overflow plate (51) fixed inside the transition chamber (214), an annular groove (52) being provided on the surface of the overflow plate (51), and a through groove (53) being provided inside the annular groove (52), so that the upper and lower sides of the overflow plate (51) can be connected to each other due to the action of the through groove (53).

5. The precision casting equipment for automobile engine cylinder block according to claim 4, characterized in that: The side wall of the overflow chamber (211) has a groove (2110), and due to the effect of the groove (2110), the overall inner diameter of the overflow chamber (211) can be made larger than the blocking chamber (213).

6. The precision casting equipment for automobile engine cylinder block according to claim 5, characterized in that: The flow dividing element (5) further comprises a plurality of spiral reflux tubes (54), the ends of the plurality of spiral reflux tubes (54) being respectively connected to corresponding through grooves (53), and the other ends of the spiral reflux tubes (54) being connected to the top end of the casting upper mould (1).

7. The precision casting equipment for automobile engine cylinder block according to claim 6, characterized in that: A pressure regulating element (6) is provided between the flow diversion element (5) and the blocking block (31).

8. The precision casting equipment for automobile engine block according to claim 7, characterized in that: The pressure regulating element (6) comprises a sleeve (61) connected to the bottom of the blocking block (31) and a trapezoidal block (63) connected to the bottom end of the sleeve (61); Wherein, sealing pieces are slidably provided on both sides of the trapezoidal block (63).

9. The precision casting equipment for automobile engine block according to claim 8, characterized in that: The blocking member comprises a transmission rod (64) slidably arranged in the overflow disk (51), and two ends of the transmission rod (64) are respectively connected to a triangular block (65) and a blocking piston (66).

10. The precision casting equipment for automobile engine block according to claim 9, characterized in that: A receiving groove (67) is provided in the overflow plate (51) at a position close to the through groove (53), and the blocking piston (66) is located in the receiving groove (67). The trapezoidal block (63) can drive the triangular block (65) to drive the transmission rod (64) to drive the blocking piston (66) to slide toward the through groove (53); A return spring (68) is sleeved on the surface of the transmission rod (64), one end of the return spring (68) is connected to one side of the blocking piston (66), and the other end is connected to the side wall of the accommodating groove (67).

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