Spring seat blank, sand mold, shell and core making mold and casting method
Through the coated sand casting process and hot core box process, combined with sand mold and shell core mold, the problems of high cost and difficult to guarantee the quality of the casting spring seat are solved, and the efficient and low-cost casting process is achieved, and the subsequent casting process is simplified. Processing ensures the quality of casting parts.
Patent Information
- Application Number
- CN202411415593.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-11
- Publication Date
- 2025-01-10
AI Technical Summary
In the prior art, the cost of casting spring seats is high, and the casting quality is difficult to guarantee, resulting in the casting parts not meeting the requirements.
The film-coated sand casting process is adopted to make spring seat blanks through sand molds and shell and core molds. Combined with the hot core box process, the efficient casting of spring seat blanks is achieved, ensuring the retraction effect and facilitating the runner body. , riser body and gate body to obtain a spring base body.
It reduces casting costs, improves casting efficiency, ensures that casting parts meet the requirements, and simplifies the subsequent processing process, making it easier to obtain a spring seat body that meets the standards.
Smart Images
Figure CN119282034A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of casting, and in particular to a spring seat blank, a sand mold, a shell and core making mold and a casting method. Background Art
[0002] The buffer is an important part of the train coupler buffer device. Its function is to mitigate the longitudinal impulse generated during the train operation, absorb the impact energy, improve the stability of the freight car operation, and avoid damage to the vehicle and cargo. The buffer includes a box and a spring system, and the spring system includes a spring seat.
[0003] The spring seat is formed by casting. In the prior art, in order to ensure the casting quality, a precision casting method is used for casting, which results in a high casting cost. Summary of the invention
[0004] The object of the present invention is to provide a spring seat blank, a sand mold, a shell and core making mold and a casting method, wherein the spring seat blank or the spring seat blank cast by the sand mold or the spring seat blank cast by the sand mold made by the mold has a good shrinkage compensation effect, and can be cast by a coated sand casting process to make the casting meet the casting requirements, thereby saving costs; at the same time, the runner body, the riser body and the gate body of the spring seat blank can be easily cut off to obtain the spring seat.
[0005] In order to achieve the above object, the present invention adopts the following technical scheme:
[0006] A spring seat blank, the spring seat blank is cast by a coated sand casting process, and comprises a spring seat body, the spring seat body comprises a bottom plate and a shell arranged on the bottom plate, an arched body is arranged on both sides of the bottom plate, a runner body is arranged on one of the arched bodies, a riser body is arranged on the runner body, a gate body is arranged on the riser body, the runner body, the riser body and the gate body are an integrated structure; the runner body comprises a connector, and the connector is connected to a first side surface and a first bottom surface of the arched body;
[0007] The upper surface of the connector is lower than the upper surface of the arcuate body, and / or the joining length between the connector and the first side surface of the arcuate body is smaller than the arcuate length of the arcuate body.
[0008] Optionally, the bottom of the arched body is provided with a rounded corner, and the upper surface of the connector is flush with the upper edge of the rounded corner.
[0009] Optionally, the gate body is in an inverted truncated cone shape, and the riser body is in a spherical shape.
[0010] The present invention also provides a sand mold for casting any one of the spring seat blanks described above, including a coated sand shell and a coated sand core; the coated sand shell includes a first cavity for casting the spring seat body together with the coated sand core, and also includes a runner connected to the first cavity, a riser connected to the runner, and a gate connected to the riser.
[0011] Optionally, the coated sand shell includes a first shell and a second shell, the first shell being provided with a first half cavity, a first half runner, a first half riser and a first half gate, and the second shell being provided with a second half cavity, a second half runner, a second half riser and a second half gate; when the first shell and the second shell are spliced together, the first half cavity and the second half cavity form the first cavity, the first half runner and the second half runner form the runner, the first half riser and the second half riser form the riser, and the first half gate and the second half gate form the gate.
[0012] The present invention also provides a shell and core making mold for making any one of the sand molds described above, including a first mold for making the coated sand shell; the first mold includes a first half mold shell for molding the inner cavity of the first shell and a second half mold shell for molding the outer wall of the first shell, as well as a third half mold shell for molding the inner cavity of the second shell and a fourth half mold shell for molding the outer wall of the second shell; the first half mold shell is provided with a first half-cavity mold body, a first half-runner mold body connected to the first half-cavity mold body, a first half-riser mold body connected to the first half-runner mold body, and a first half-gate mold body connected to the first half-riser mold body; the third half mold shell is provided with a second half-cavity mold body, a second half-runner mold body connected to the second half-cavity mold body, a second half-riser mold body connected to the second half-runner mold body, and a second half-gate mold body connected to the second half-riser mold body.
[0013] Optionally, the second half mold shell is provided with a first half cavity groove, a first half runner groove connected to the first half cavity groove, a first half riser groove connected to the first half runner groove, and a first half gate groove connected to the first half riser groove; the fourth half mold shell is provided with a second half cavity groove, a second half runner groove connected to the second half cavity groove, a second half riser groove connected to the second half runner groove, and a second half gate groove connected to the second half riser groove;
[0014] The first half-cavity groove, the first half-runner groove, the first half-riser groove and the first half-gate groove are respectively matched with the first half-cavity mold body, the first half-runner mold body, the first half-riser mold body and the first half-gate mold body; the second half-cavity groove, the second half-runner groove, the second half-riser groove and the second half-gate groove are respectively matched with the second half-cavity mold body, the second half-runner mold body, the second half-riser mold body and the second half-gate mold body;
[0015] A plurality of protrusions arranged at intervals are disposed in the first half-cavity groove and the second half-cavity groove, and gaps are left between the protrusions for forming reinforcing ribs on the outer walls of the first shell and the second shell.
[0016] Optionally, it further comprises a second mold for making the coated sand core, the second mold comprises a first mold shell and a second mold shell, the first mold shell is provided with a first groove, and the second mold shell is provided with a second groove.
[0017] The present invention also provides a method for casting a spring seat blank, which is used to cast any one of the spring seat blanks described above, and the method comprises:
[0018] The coated sand shell and the coated sand core are manufactured by a hot core box process; the coated sand shell comprises a first cavity for casting the spring seat body together with the coated sand core, and also comprises a runner connected to the first cavity, a riser connected to the runner, and a gate connected to the riser;
[0019] Placing the coated sand core in the coated sand shell for shell assembly;
[0020] pouring molten steel into the pouring gate until the molten steel fills the first cavity, runner, riser and pouring gate;
[0021] After the molten steel is cooled and solidified, the coated sand shell and the coated sand core are removed to obtain the spring seat blank.
[0022] In the technical solution of the present invention, the spring seat blank or the spring seat blank cast by the sand mold or the spring seat blank cast by the sand mold made by the shell and core mold has a good shrinkage compensation effect, and can be cast by the coated sand casting process to make the casting meet the casting requirements, thereby saving costs; and the upper surface of the connector of the runner body is lower than the upper surface of the arch body, and the side line of the arch body is exposed. When cutting, the cutting can be carried out along the side line of the arch body. Alternatively, the joint length of the connector and the first side of the arch body is less than the arc length of the arch body, so that part of the first side of the arch body is exposed, and the cutting can be carried out along the first side of the arch body. The part where the connector is connected to the first bottom surface of the arch body can be cut or ground along the first bottom surface. It is convenient to remove the runner body, the riser body and the gate body to obtain the spring seat body. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 is a schematic diagram of a perspective view of a spring seat blank;
[0024] Figure 2 for Figure 1 A schematic diagram of a perspective view from another viewing angle;
[0025] Figure 3 is a schematic diagram of a perspective view of a spring seat body;
[0026] Figure 4 for Figure 3 A schematic diagram of a perspective view from another angle;
[0027] Figure 5 is a schematic diagram of a perspective view of a first mold for making a coated sand shell;
[0028] Figure 6 for Figure 5 A schematic diagram of an exploded view of
[0029] Figure 7 is a schematic diagram of a perspective view of a second mold for manufacturing a coated sand core;
[0030] Figure 8 for Figure 7 Schematic diagram of an exploded view of .
[0031] In the figure, 1, spring seat body; 2, runner body; 3, riser body; 4, gate body; 6, protrusion; 11, bottom plate; 12, shell; 21, connector; 22, transition body; 51, first half mold shell; 52, second half mold shell; 53, third half mold shell; 54, fourth half mold shell; 61, first mold shell; 62, second mold shell; 111, bow body; 511, first half cavity mold body; 512, first half runner mold body; 513, first half riser mold body; 514, first half gate mold body; 521, first half cavity groove ; 522, first half runner groove; 523, first half riser groove; 524, first half gate groove; 531, second half cavity mold; 532, second half runner mold; 533, second half riser mold; 534, second half gate mold; 541, second half cavity groove; 542, second half runner groove; 543, second half riser groove; 544, second half gate groove; 611, first groove; 621, second groove; 1111, first side surface; 1112, first bottom surface; 1113, rounded corners. DETAILED DESCRIPTION
[0032] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are only examples of devices or methods consistent with some aspects of the present invention.
[0033] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.
[0034] The following is an explanation of the embodiments with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the invention described in the claims. In addition, the entire contents of the configurations shown in the following embodiments are not limited to the solutions required as the invention described in the claims.
[0035] See also Figure 1-4The present invention provides a spring seat blank, including a spring seat body 1, the spring seat body 1 including a bottom plate 11 and a shell 12 arranged on the bottom plate 11. An arch 111 is arranged on both sides of the bottom plate 11. A runner body 2 is arranged on the one arch 111, a riser body 3 is arranged on the runner body 2, a gate body 4 is arranged on the riser body 3, and the runner body 2, the riser body 3 and the gate body 4 are an integrated structure; the runner body 2 may include a connector 21, and may also include a transition body 22, the connector 21 is connected to the first side surface 1111 and the first bottom surface 1112 of the arch 111. The upper surface of the connector 21 is lower than the upper surface of the arch 111, and / or the joining length of the connector 21 and the first side surface 1111 of the arch 111 is less than the arc length of the arch 111.
[0036] The spring seat blank can be obtained by coated sand casting process, with low casting cost and high casting efficiency. After experiments, it can meet the casting requirements. After obtaining the spring seat blank, the runner body 2, the riser body 3 and the gate body 4 need to be cut off to obtain the spring seat body 1, which can be applied to the coupler buffer device. Figure 1 Since the upper surface of the connector 21 of the runner body 2 is lower than the upper surface of the arch 111, the side line of the arch 111 is exposed, and when cutting, the cutting can be performed along the side line of the arch 111. Alternatively, the joining length between the connector 21 and the first side surface 1111 of the arch 111 is less than the arc length of the arch 111, so that part of the first side surface 1111 of the arch 111 is exposed, and the cutting can be performed along the first side surface 1111 of the arch 111. The part where the connector 21 is connected to the first bottom surface 1112 of the arch 111 can be cut or ground along the first bottom surface 1112. It is convenient to remove the runner body 2, the riser body 3 and the gate body 4 to obtain the spring seat body 1. Moreover, the spring seat blank of this structure has a better shrinkage compensation effect.
[0037] Optionally, a rounded corner 1113 is provided at the bottom of the arched body 111 , and the upper surface of the connecting body 21 is flush with the upper edge of the rounded corner 1113 .
[0038] Optionally, the gate body 4 is in an inverted truncated cone shape, and the riser body 3 is in a spherical shape.
[0039] Here, the riser body 3 is spherical, which means that the riser body 3 is basically spherical, and can be increased or decreased on the basis of the sphere to obtain other shapes based on the sphere. The gate body 4 is in an inverted truncated cone shape, and the riser body 3 is spherical, which is convenient for casting and further increases the shrinkage compensation effect.
[0040] The present invention also provides a sand mold for casting any one of the spring seat blanks described above, including a coated sand shell and a coated sand core; the coated sand shell includes a first cavity for casting the spring seat body 1 together with the coated sand core, and also includes a runner connected to the first cavity, a riser connected to the runner, and a gate connected to the riser.
[0041] When casting, it is necessary to first prepare the coated sand shell and the coated sand core, place the coated sand core in the coated sand shell, and then pour the casting liquid.
[0042] Optionally, the coated sand shell includes a first shell body and a second shell body, the first shell body is provided with a first half cavity, a first half runner, a first half riser and a first half gate, and the second shell body is provided with a second half cavity, a second half runner, a second half riser and a second half gate; when the first shell body and the second shell body are spliced together, the first half cavity and the second half cavity form a first cavity, the first half runner and the second half runner form a runner, the first half riser and the second half riser form a riser, and the first half gate and the second half gate form a gate.
[0043] The present invention also provides a shell and core making mold for making any one of the sand molds described above, including a first mold for making a coated sand shell; Figure 5 and Figure 6 The first mold includes a first half mold shell 51 for inner cavity molding of the first shell and a second half mold shell 52 for outer wall molding of the first shell, as well as a third half mold shell 53 for inner cavity molding of the second shell and a fourth half mold shell 54 for outer wall molding of the second shell; the first half mold shell 51 is provided with a first half-cavity mold body 511, a first half-runner mold body 512 connected to the first half-cavity mold body 511, a first half-riser mold body 513 connected to the first half-runner mold body 512, and a first half-gate mold body 514 connected to the first half-riser mold body 513; the third half mold shell 53 is provided with a second half-cavity mold body 531, a second half-runner mold body 532 connected to the second half-cavity mold body 531, a second half-riser mold body 533 connected to the second half-runner mold body 532, and a second half-gate mold body 534 connected to the second half-riser mold body 533.
[0044] The first half mold shell 51 and the third half mold shell 53 can be an integrated structure, and the second half mold shell 52 and the fourth half mold shell 54 can be an integrated structure. Put the casting sand into the first mold, and after compaction, the first shell and the second shell can be obtained, and the first shell and the second shell can be spliced to obtain a coated sand shell. The first half mold shell 51 and the second half mold shell 52 can press the casting sand into the first shell, the first half mold shell 51 is used to shape the inner cavity of the first shell, and the second half mold shell 52 is used to shape the outer wall of the first shell; the third half mold shell 53 and the fourth half mold shell 54 can press the casting sand into the second shell, the third half mold shell 53 is used to shape the inner cavity of the second shell, and the fourth half mold shell 54 is used to shape the outer wall of the second shell.
[0045] Optionally, the second half mold shell 52 is provided with a first half cavity groove 521, a first half runner groove 522 connected to the first half cavity groove 521, a first half riser groove 523 connected to the first half runner groove 522, and a first half gate groove 524 connected to the first half riser groove 523; the fourth half mold shell 54 is provided with a second half cavity groove 541, a second half runner groove 542 connected to the second half cavity groove 541, a second half riser groove 543 connected to the second half runner groove 542, and a second half gate groove 544 connected to the second half riser groove 543;
[0046] The first half cavity groove 521, the first half runner groove 522, the first half riser groove 523 and the first half gate groove 524 are respectively matched with the first half cavity mold body 511, the first half runner mold body 512, the first half riser mold body 513 and the first half gate mold body 514; the second half cavity groove 541, the second half runner groove 542, the second half riser groove 543 and the second half gate groove 544 are respectively matched with the second half cavity mold body 531, the second half runner mold body 532, the second half riser mold body 533 and the second half gate mold body 534;
[0047] A plurality of protrusions 6 arranged at intervals are disposed in the first half-cavity groove 521 and the second half-cavity groove 541 , and gaps are left between the protrusions 6 for forming reinforcing ribs on the outer walls of the first shell and the second shell.
[0048] The structures of the second half mold shell 52 and the fourth half mold shell 54 respectively determine the shapes of the outer wall of the first shell and the outer wall of the second shell. In this way, the outer walls of the first shell and the second shell can have similar shapes to the inner cavity, and reinforcing ribs are formed on the outer walls of the first shell and the second shell to improve the strength of the first shell and the second shell. In this way, less foundry sand can be used to produce a coated sand shell that meets the strength requirements.
[0049] Alternatively, see Figure 7 and Figure 8 , and also includes a second mold for making a coated sand core, the second mold includes a first mold shell 61 and a second mold shell 62, the first mold shell 61 is provided with a first groove 611, and the second mold shell 62 is provided with a second groove 621.
[0050] The second mold is used to make a coated sand core. The foundry sand is placed in the second mold, and the first mold shell 61 and the second mold shell 62 can press the foundry sand into a coated sand core. The shape of the first groove 611 is determined according to the shape of the upper half of the coated sand core, and the internal structure of the second groove 621 is determined according to the shape of the lower half of the coated sand core.
[0051] The present invention also provides a method for casting a spring seat blank, which is used to cast any one of the spring seat blanks described above, and the method comprises:
[0052] The coated sand shell and the coated sand core are manufactured by the hot core box process; the coated sand shell comprises a first cavity for casting the spring seat body together with the coated sand core, and also comprises a runner connected to the first cavity, a riser connected to the runner and a gate connected to the riser.
[0053] That is, using coated sand as raw material, a coated sand shell is produced by using a first mold and a hot core box process, and using coated sand as raw material, a coated sand core is produced by using a second mold and a hot core box process.
[0054] The coated sand core is placed in the coated sand shell for shell assembly.
[0055] Molten steel is poured into the pouring gate until the molten steel fills the first cavity, the runner, the riser and the pouring gate.
[0056] After the molten steel is cooled and solidified, the coated sand shell and the coated sand core are removed to obtain the spring seat blank.
Claims
1. A spring seat blank, characterized in that: The spring seat blank is cast by a coated sand casting process, and comprises a spring seat body (1), the spring seat body (1) comprising a base plate (11) and a shell (12) arranged on the base plate (11), a bow-shaped body (111) is arranged on both sides of the base plate (11), a runner body (2) is arranged on the bow-shaped body (111), a riser body (3) is arranged on the runner body (2), a gate body (4) is arranged on the gate body (3), and the runner body (2), the riser body (3) and the gate body (4) are connected to each other. The mouth body (3) and the gate body (4) are an integrated structure; the runner body (2) includes a connector (21), and the connector (21) is connected to the first side surface (1111) and the first bottom surface (1112) of the arched body (111); the upper surface of the connector (21) is lower than the upper surface of the arched body (111), and / or the joining length between the connector (21) and the first side surface (1111) of the arched body (111) is less than the arc length of the arched body (111).
2. The spring seat blank according to claim 1, characterized in that: The bottom of the arched body (111) is provided with a rounded corner (1113), and the upper surface of the connecting body (21) is flush with the upper edge of the rounded corner (113).
3. The spring seat blank according to claim 1, characterized in that: The gate body (4) is in the shape of an inverted truncated cone, and the riser body (3) is in the shape of a sphere.
4. A sand mold, characterized in that: Used for casting a spring seat blank as described in any one of claims 1 to 3, comprising a coated sand shell and a coated sand core; the coated sand shell comprises a first cavity for casting the spring seat body (1) together with the coated sand core, and also comprises a runner connected to the first cavity, a riser connected to the runner and a gate connected to the riser.
5. The sand mold according to claim 4, characterized in that The coated sand shell includes a first shell and a second shell, the first shell is provided with a first half cavity, a first half runner, a first half riser and a first half gate, and the second shell is provided with a second half cavity, a second half runner, a second half riser and a second half gate; when the first shell and the second shell are spliced together, the first half cavity and the second half cavity form the first cavity, the first half runner and the second half runner form the runner, the first half riser and the second half riser form the riser, and the first half gate and the second half gate form the gate.
6. A shell and core making mold, characterized in that: Used to make the sand mold as claimed in claim 5, comprising a first mold for making the coated sand shell; the first mold comprises a first half mold shell (51) for forming the inner cavity of the first shell and a second half mold shell (52) for forming the outer wall of the first shell, as well as a third half mold shell (53) for forming the inner cavity of the second shell and a fourth half mold shell (54) for forming the outer wall of the second shell; the first half mold shell (51) is provided with a first half cavity mold body (511), a first half runner mold body connected to the first half cavity mold body (511) (512), a first half riser mold body (513) connected to the first half runner mold body (512), and a first half gate mold body (514) connected to the first half riser mold body (513); the third half mold shell (53) is provided with a second half cavity mold body (531), a second half runner mold body (532) connected to the second half cavity mold body (531), a second half riser mold body (533) connected to the second half runner mold body (532), and a second half gate mold body (534) connected to the second half riser mold body (533).
7. The shell and core making mold according to claim 6, characterized in that: The second half mold shell (52) is provided with a first half cavity groove (521), a first half runner groove (522) connected to the first half cavity groove (521), a first half riser groove (523) connected to the first half runner groove (522), and a first half gate groove (524) connected to the first half riser groove (523); the fourth half mold shell (54) is provided with a second half cavity groove (541), a second half runner groove (542) connected to the second half cavity groove (541), a second half riser groove (543) connected to the second half runner groove (542), and a second half gate groove (544) connected to the second half riser groove (543); The first half-cavity groove (521), the first half-runner groove (522), the first half-riser groove (523) and the first half-gate groove (524) are respectively matched with the first half-cavity mold body (511), the first half-runner mold body (512), the first half-riser mold body (513) and the first half-gate mold body (514); the second half-cavity groove (541), the second half-runner groove (542), the second half-riser groove (543) and the second half-gate groove (544) are respectively matched with the second half-cavity mold body (531), the second half-runner mold body (532), the second half-riser mold body (533) and the second half-gate mold body (534); A plurality of protrusions (6) arranged at intervals are provided in the first half-cavity groove (521) and the second half-cavity groove (541), and gaps are left between the protrusions (6) for forming reinforcing ribs on the outer walls of the first shell and the second shell.
8. The shell and core making mold according to claim 6, characterized in that: It also includes a second mold for making a coated sand core, the second mold including a first mold shell (61) and a second mold shell (62), the first mold shell (61) is provided with a first groove (611), and the second mold shell (62) is provided with a second groove (621).
9. A method for casting a spring seat blank, characterized in that: For casting a spring seat blank as claimed in any one of claims 1 to 3, the method comprises: The coated sand shell and the coated sand core are manufactured by a hot core box process; the coated sand shell comprises a first cavity for casting the spring seat body together with the coated sand core, and also comprises a runner connected to the first cavity, a riser connected to the runner, and a gate connected to the riser; Placing the coated sand core in the coated sand shell for shell assembly; pouring molten steel into the pouring gate until the molten steel fills the first cavity, runner, riser and pouring gate; After the molten steel is cooled and solidified, the coated sand shell and the coated sand core are removed to obtain the spring seat blank.