Lost foam casting mold for tractor engine cylinder block
By designing the tractor engine cylinder block disappearance mold casting mold, using foam material and sliding position assisted molding, the accuracy and efficiency problems of traditional casting methods are solved, and high-precision and efficient cylinder casting are achieved.
Patent Information
- Application Number
- CN202422394559.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Traditional sand casting methods are difficult to meet the high-precision and efficient production needs of the cylinder block of complex structure tractor engines, and there are problems such as low dimensional accuracy, many casting defects, low production efficiency and high mold cost.
A tractor engine cylinder block disappearance mold casting mold is designed, including a lower mold and a liftable upper mold, and a first and second molding components are provided, which are used to mold the upper shell and the lower shell disappearance mold respectively. It adopts foam material and assists in forming and demolding through sliding position, combining with the cooling water circuit structure.
High-precision casting of cylinder block disappearing mold is achieved, production efficiency and casting quality are improved, processing allowance is reduced, and usage effect is improved.
Smart Images
Figure CN223145912U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of casting molds, in particular to a lost foam casting mold for a tractor engine cylinder block. Background Technique
[0002] As an important power machine in agricultural production and engineering operations, the performance and technical level of the engine of a tractor play a key role, and the cylinder block of the engine is one of the key components of the engine. In the past, the structure of the tractor cylinder block was relatively simple, and the requirements for casting were not high. Generally, sand casting was used to manufacture blank parts.
[0003] With the continuous development of engine technology, the structure of the engine is becoming more and more complex, and the engine cylinder block is also becoming more and more complex. Due to the disadvantages of low dimensional accuracy, many casting defects, low production efficiency and high mold cost of the traditional sand casting method, it is no longer applicable to the existing cylinder block casting. Therefore, a new casting method needs to be designed to cast the cylinder block blank parts to meet the production requirements. Content of the Utility Model
[0004] (1) Technical Problems to be Solved
[0005] The problem to be solved by the utility model is to provide a lost foam casting mold for a tractor engine cylinder block, which can simultaneously manufacture the lost foam of the cylinder block upper shell and the lost foam of the cylinder block lower shell. After splicing the lost foam of the cylinder block upper shell and the lost foam of the cylinder block lower shell, a lost foam for casting the engine cylinder block can be formed; the lost foam method is used to cast blank parts, with high casting accuracy, high production efficiency and good casting quality.
[0006] (2) Technical Solutions
[0007] To solve the above technical problems, the utility model provides a lost foam casting mold for a tractor engine cylinder block, including a lower mold and an upper mold that can be lifted relative to the lower mold. A first forming component and a second forming component are arranged between the lower mold and the upper mold. The first forming component and the second forming component are arranged at intervals. The first forming component is used to form the lost foam of the cylinder block upper shell, and the second forming component is used to form the lost foam of the cylinder block lower shell. The lost foam of the cylinder block upper shell and the lost foam of the cylinder block lower shell can be spliced to form a lost foam for casting the engine cylinder block;
[0008] The first forming component includes a first cavity provided on the lower die and a first core provided on the upper die and cooperating with the first cavity. On both sides of the first cavity, first slides are slidably mounted horizontally. The first slides are used to assist in forming both side ends of the lost mold of the cylinder block upper shell. The second forming component includes a second cavity provided on the lower die and arranged at an interval from the first cavity. A second core cooperating with the second cavity is provided on the upper die. Second slides for forming the side ends of the lost mold of the cylinder block lower shell are slidably mounted on both sides of the second cavity.
[0009] In some embodiments, a mounting plate is fixed on the lower die. The first cavity, the first slides, the second cavity, and the second slides are all mounted on the mounting plate.
[0010] In some embodiments, a first forming portion is protrudingly provided on the first slide towards the first cavity. First sliding inserts are symmetrically mounted at both ends of the first slide. A first dovetail groove is provided on the first sliding insert. A first dovetail block adapted to the first dovetail groove is provided on the mounting plate.
[0011] In some embodiments, the first cavity includes two first limiting plates arranged in parallel and at an interval. A plurality of first forming blocks are arranged between the two first limiting plates. The first slide abuts against the side end of the first limiting plate. First arc-shaped protrusions are symmetrically provided on both sides of the first slide. First arc-shaped grooves adapted to the first arc-shaped protrusions are provided on the first limiting plate.
[0012] In some embodiments, a first undercut insert is provided on the first forming block. The first undercut insert is used to form the undercut structure of the lost mold of the cylinder block upper shell. A third dovetail block is provided on the first undercut insert. The first undercut insert is vertically connected to the first forming block through the third dovetail block.
[0013] In some embodiments, a second forming portion is protrudingly provided on the second slide towards the second cavity. Second sliding inserts are fixed on both sides of the bottom of the second slide. A second dovetail block is provided on the mounting plate. A second dovetail groove adapted to the second dovetail block is provided on the second sliding insert.
[0014] In some embodiments, the second cavity includes two second limiting plates arranged in parallel and at an interval. A plurality of second forming blocks are arranged between the two second limiting plates. Second arc-shaped protrusions are symmetrically provided on both sides of the second slide. Second arc-shaped grooves adapted to the second arc-shaped protrusions are provided on the second limiting plate.
[0015] In some embodiments, a second reverse buckle insert is provided on the second forming block, and the second reverse buckle insert is used to form the reverse buckle structure of the lost mold of the lower housing of the cylinder block; a fourth dovetail block is provided on the second reverse buckle insert, and the second reverse buckle insert is vertically movably connected to the second forming block through the fourth dovetail block.
[0016] In some embodiments, a plurality of water inlet pipes are provided on one side of the upper mold, and a plurality of water outlet pipes are provided on the other side. The water inlet pipes are communicated with the corresponding water outlet pipes through cooling pipelines inside the upper mold.
[0017] (III) Beneficial effects
[0018] A lost mold casting die for a tractor engine cylinder block provided by the present utility model can simultaneously manufacture the lost mold of the upper housing of the cylinder block and the lost mold of the lower housing of the cylinder block. After splicing the lost mold of the upper housing of the cylinder block and the lost mold of the lower housing of the cylinder block, a lost mold for casting the engine cylinder block can be formed, thereby providing conditions for subsequent lost mold casting of blank parts; adopting the lost mold method to cast blank parts has high casting accuracy, high production efficiency, good casting quality, reduces machining allowance, and has good use effect. Description of the drawings
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0020] Figure 1 It is a three-dimensional view of a lost mold casting die for a tractor engine cylinder block of the present utility model;
[0021] Figure 2 It is an exploded view of a lost mold casting die for a tractor engine cylinder block of the present utility model;
[0022] Figure 3 It is a three-dimensional view of the lost mold of the engine cylinder block of a lost mold casting die for a tractor engine cylinder block of the present utility model;
[0023] Figure 4 It is a three-dimensional view of the upper mold of a lost mold casting die for a tractor engine cylinder block of the present utility model;
[0024] Figure 5 It is a three-dimensional view of the first cavity of a lost mold casting die for a tractor engine cylinder block of the present utility model;
[0025] Figure 6 It is an exploded view of the first slide of a lost mold casting die for a tractor engine cylinder block of the present utility model;
[0026] Figure 7 It is a three-dimensional view of the first moving position of a lost foam casting mold for a tractor engine cylinder block according to the present utility model;
[0027] Figure 8 It is a three-dimensional view of the second cavity of a lost foam casting mold for a tractor engine cylinder block according to the present utility model;
[0028] Figure 9 It is an exploded view of the second moving position of a lost foam casting mold for a tractor engine cylinder block according to the present utility model;
[0029] Figure 10 It is a three-dimensional view of the second moving position of a lost foam casting mold for a tractor engine cylinder block according to the present utility model;
[0030] The corresponding component names of each reference numeral in the figure are: 1, lower mold; 11, mounting plate; 111, first dovetail block; 112, second dovetail block; 2, upper mold; 21, water inlet pipe; 22, water outlet pipe; 31, first cavity; 32, first core; 33, first moving position; 34, first sliding insert; 311, first limiting plate; 312, first forming block; 313, first arc-shaped groove; 314, first undercut insert; 315, third dovetail block; 331, first forming part; 332, first arc-shaped protrusion; 341, first dovetail groove; 41, second cavity; 42, second core; 43, second moving position; 44, second sliding insert; 411, second limiting plate; 412, second forming block; 413, second arc-shaped groove; 414, second undercut insert; 415, fourth dovetail block; 431, second forming part; 432, second arc-shaped protrusion; 441, second dovetail groove; 5, lost foam of cylinder block upper shell; 6, lost foam of cylinder block lower shell. Specific embodiments
[0031] The following will describe the present application in detail with reference to the accompanying drawings and specific embodiments.
[0032] The following illustrates the implementation manners of the present application through specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope protected by the present application.
[0033] It should be noted that the following description relates to various aspects of embodiments within the scope of the appended claims. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is illustrative only. Based on this application, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement a device and / or practice a method. Additionally, this device can be implemented and this method can be practiced using other structures and / or functionality in addition to one or more of the aspects set forth herein.
[0034] It should also be noted that the diagrams provided in the following embodiments only illustrate the basic concept of this application schematically. Only the components related to this application are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and proportion of each component in actual implementation can be arbitrarily changed, and the layout type of its components may also be more complex.
[0035] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that these examples can be practiced without these specific details.
[0036] The following describes the technical solutions provided by each embodiment of this application in conjunction with the accompanying drawings.
[0037] Refer to Figures 1 to 10 , this utility model provides a lost foam casting mold for a tractor engine cylinder block, including a lower mold 1 and an upper mold 2 that can be lifted relative to the lower mold 1. A first forming component and a second forming component are arranged between the lower mold 1 and the upper mold 2. The first forming component and the second forming component are arranged at intervals. The first forming component is used to form the lost foam 5 of the cylinder block upper shell, and the second forming component is used to form the lost foam 6 of the cylinder block lower shell. The lost foam 5 of the cylinder block upper shell and the lost foam 6 of the cylinder block lower shell can be spliced to form a lost foam for casting the engine cylinder block. Among them, this casting mold uses foam injection molding, that is, both the lost foam 5 of the cylinder block upper shell and the lost foam 6 of the cylinder block lower shell are made of foam after molding; the shape and structure of the lost foam 5 of the cylinder block upper shell are consistent with those of the cylinder block upper shell, and the shape and structure of the lost foam 6 of the cylinder block lower shell are consistent with those of the cylinder block lower shell; after being spliced into a complete lost foam, a refractory layer needs to be coated on the surface of the lost foam to ensure the casting quality of the blank part.
[0038] Refer to Figures 2 to 4, the first forming component includes a first cavity 31 provided on the lower mold 1 and a first core 32 provided on the upper mold 2 and cooperating with the first cavity 31. On both sides of the first cavity 31, first slides 33 are slidably mounted in the horizontal direction. The first slides 33 are used to assist in forming both side ends of the lost mold 5 of the cylinder upper shell. The second forming component has a similar structure to the first forming component. The second forming component includes a second cavity 41 provided on the lower mold 1 and arranged at an interval from the first cavity 31. On the upper mold 2, a second core 42 cooperating with the second cavity 41 is provided. On both sides of the second cavity 41, second slides 43 for forming the side ends of the lost mold 6 of the cylinder lower shell are slidably mounted. By using the slidable first slides 33 and second slides 43, on the one hand, it is convenient to close the mold to form the lost mold, and on the other hand, it is also convenient to demold the lost mold after forming.
[0039] In some embodiments, as Figure 2 shown, a mounting plate 11 is fixed on the lower mold 1. The first cavity 31, the first slides 33, the second cavity 41 and the second slides 43 are all mounted on the mounting plate 11.
[0040] In some embodiments, as Figures 5 to 7 shown, the first slide 33 protrudes towards the first cavity 31 and is provided with a first forming portion 331. The first forming portion 331 is used to assist in forming the side end of the lost mold 5 of the cylinder upper shell. At both ends of the first slide 33, first sliding inserts 34 are symmetrically mounted. On the first sliding inserts 34, first dovetail grooves 341 are provided. On the mounting plate 11, first dovetail blocks 111 adapted to the first dovetail grooves 341 are provided. Through the cooperation of the first dovetail grooves 341 and the first dovetail blocks 111, the first slide 33 slides conveniently and the movement direction is accurate, ensuring the forming quality.
[0041] In some embodiments, as Figures 5 to 7 shown, the first cavity 31 includes two first limiting plates 311 arranged in parallel and at an interval. Between the two first limiting plates 311, a plurality of first forming blocks 312 are arranged. The first slide 33 abuts against the side end of the first limiting plate 311. On both sides of the first slide 33, first arc-shaped protrusions 332 are symmetrically provided. On the first limiting plate 311, first arc-shaped grooves 313 adapted to the first arc-shaped protrusions 332 are provided. After closing the mold, the first arc-shaped protrusions 332 are placed in the first arc-shaped grooves 313. Through the cooperation of the first arc-shaped protrusions 332 and the first arc-shaped grooves 313, the first slide 33 can be accurately limited to ensure the forming quality; when closing or demolding the mold, the first slide 33 can be slid manually.
[0042] In some embodiments, as Figure 5As shown, a first reverse buckle insert 314 is provided on the first forming block 312. The first reverse buckle insert 314 is used to form the reverse buckle structure of the lost foam pattern 5 of the upper shell of the cylinder block. A third dovetail block 315 is provided on the first reverse buckle insert 314. The first reverse buckle insert 314 is connected to the first forming block 312 in a liftable manner through the third dovetail block 315. By using the liftable first reverse buckle insert 314, it is convenient for the product to be demolded after forming. After the product is formed, first slide the first row positions 33 on both sides away, then pick up the product upward. The product can drive the first reverse buckle insert 314 to rise, and finally separate the first reverse buckle insert 314 from the product.
[0043] In some embodiments, as Figures 8 to 10 shown, the second row position 43 protrudes towards the second cavity 41 and is provided with a second forming portion 431. Second sliding inserts 44 are fixed on both sides of the bottom of the second row position 43. A second dovetail block 112 is provided on the mounting plate 11. A second dovetail groove 441 adapted to the second dovetail block 112 is provided on the second sliding insert 44. Through the cooperation of the second dovetail groove and the second dovetail block, the second row position slides conveniently and the movement direction is accurate, ensuring the forming quality.
[0044] In some embodiments, as Figures 8 to 10 , the second cavity 41 includes two second limiting plates 411 arranged in parallel and at intervals. A plurality of second forming blocks 412 are arranged between the two second limiting plates 411. Second arc-shaped convex blocks 432 are symmetrically arranged on both sides of the second row position 43. Second arc-shaped grooves 413 adapted to the second arc-shaped convex blocks 432 are provided on the second limiting plates 411. After the mold is closed, the second arc-shaped convex blocks are placed in the second arc-shaped grooves. Through the cooperation of the second arc-shaped convex blocks and the second arc-shaped grooves, the second row position can be accurately limited, ensuring the forming quality. When the mold is closed or demolded, the second row position can be slid manually.
[0045] In some embodiments, as Figure 8 shown, a second reverse buckle insert 414 is provided on the second forming block 412. The second reverse buckle insert 414 is used to form the reverse buckle structure of the lost foam pattern 6 of the lower shell of the cylinder block. A fourth dovetail block 415 is provided on the second reverse buckle insert 414. The second reverse buckle insert 414 is connected to the second forming block 412 in a liftable manner through the fourth dovetail block 415. By using the liftable second reverse buckle insert, it is convenient for the product to be demolded after forming. After the product is formed, first slide the second row positions on both sides away, then pick up the product upward. The product can drive the second reverse buckle insert to rise, and finally separate the second reverse buckle insert from the product.
[0046] In some embodiments, as Figure 4As shown in the figure, multiple water inlet pipes 21 are provided on one side of the upper die 2, and multiple water outlet pipes 22 are provided on the other side. The water inlet pipes 21 are communicated with the corresponding water outlet pipes 22 through the cooling pipelines inside the upper die 2. Through the circulating waterway structure, the temperature of the mold can be reduced, which is also beneficial to accelerating the cooling and forming of the product.
[0047] For the same or similar parts among the various embodiments in this specification, reference can be made to each other. Each embodiment focuses on the differences from other embodiments.
[0048] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A lost foam casting mold for a tractor engine cylinder block, comprising a lower mold (1) and an upper mold (2) that can be lifted relative to the lower mold (1), characterized in that: A first forming component and a second forming component are arranged between the lower die (1) and the upper die (2). The first forming component and the second forming component are arranged at intervals. The first forming component is used for forming the lost mold of the cylinder block upper shell (5), and the second forming component is used for forming the lost mold of the cylinder block lower shell (6). The lost mold of the cylinder block upper shell (5) and the lost mold of the cylinder block lower shell (6) can be spliced to form a lost mold for casting an engine cylinder block. The first forming component includes a first cavity (31) arranged on the lower die (1) and a first core (32) arranged on the upper die (2) and cooperating with the first cavity (31). First slides (33) are slidably mounted on both sides of the first cavity (31) in the horizontal direction. The first slides (33) are used to assist in forming both ends of the lost mold of the cylinder block upper shell (5). The second forming component includes a second cavity (41) arranged on the lower die (1) and spaced from the first cavity (31), and a second core (42) arranged on the upper die (2) and cooperating with the second cavity (41). Second slides (43) for forming the side ends of the lost mold of the cylinder block lower shell (6) are slidably mounted on both sides of the second cavity (41).
2. The lost foam casting mold for the tractor engine cylinder block according to claim 1, wherein: A mounting plate (11) is fixed on the lower die (1). The first cavity (31), the first slides (33), the second cavity (41), and the second slides (43) are all mounted on the mounting plate (11).
3. The lost foam casting mold for the tractor engine cylinder block according to claim 2, characterized in that: The first slide (33) protrudes towards the first cavity (31) with a first forming portion (331). First sliding inserts (34) are symmetrically mounted at both ends of the first slide (33). First dovetail grooves (341) are arranged on the first sliding inserts (34), and first dovetail blocks (111) adapted to the first dovetail grooves (341) are arranged on the mounting plate (11).
4. The lost foam casting die for the tractor engine cylinder block according to claim 1, characterized in that: The first cavity (31) includes two first limiting plates (311) arranged in parallel and at intervals. A plurality of first forming blocks (312) are arranged between the two first limiting plates (311). The first slide (33) abuts against the side ends of the first limiting plates (311).
5. The lost foam casting mold for the tractor engine cylinder block according to claim 4, characterized in that: First arc-shaped bumps (332) are symmetrically arranged on both sides of the first slide (33). First arc-shaped grooves (313) adapted to the first arc-shaped bumps (332) are arranged on the first limiting plates (311).
6. The lost foam casting mold for the tractor engine cylinder block according to claim 4, characterized in that: First reverse buckle inserts (314) are arranged on the first forming blocks (312). The first reverse buckle inserts (314) are used for forming the reverse buckle structure of the lost mold of the cylinder block upper shell (5). Third dovetail blocks (315) are arranged on the first reverse buckle inserts (314). The first reverse buckle inserts (314) are connected to the first forming blocks (312) in a liftable manner through the third dovetail blocks (315).
7. The lost foam casting die for the tractor engine cylinder block according to claim 2, wherein: The second row position (43) is provided with a second molding part (431) protruding towards the second cavity (41), and second sliding inserts (44) are fixed on both sides of the bottom of the second row position (43); a second dovetail block (112) is provided on the mounting plate (11), and a second dovetail groove (441) adapted to the second dovetail block (112) is provided on the second sliding insert (44).
8. The lost foam casting mold for the tractor engine cylinder block according to claim 1, characterized in that: The second cavity (41) includes two second limiting plates (411) arranged in parallel and at intervals, and a plurality of second molding blocks (412) are arranged between the two second limiting plates (411); second arc-shaped convex blocks (432) are symmetrically arranged on both sides of the second row position (43), and second arc-shaped grooves (413) adapted to the second arc-shaped convex blocks (432) are provided on the second limiting plates (411).
9. The lost foam casting die for the tractor engine cylinder block according to claim 8, wherein: A second undercut insert (414) is provided on the second molding block (412), and the second undercut insert (414) is used for molding the undercut structure of the lost foam pattern of the lower shell of the cylinder block; a fourth dovetail block (415) is provided on the second undercut insert (414), and the second undercut insert (414) is connected to the second molding block (412) in a vertically movable manner through the fourth dovetail block (415).
10. The lost foam casting mold for the tractor engine cylinder block according to claim 1, wherein: A plurality of water inlet pipes (21) are provided on one side of the upper mold (2), and a plurality of water outlet pipes (22) are provided on the other side. The water inlet pipes (21) are communicated with the corresponding water outlet pipes (22) through cooling pipelines in the upper mold (2).