Lateral gate runner piston casting mold

Abstract

The present application provides a pouring gate side placement type piston casting mold, comprising a base, the surface of the base symmetrically slidingly installs a first side mold plate and a second side mold plate, two groups of center columns are installed at the center of the surface of the base, and the center columns are located between the first side mold plate and the second side mold plate; the first side mold plate and the second side mold plate are the same in structure, the inner side surface of the first side mold plate is symmetrically provided with a first cavity, a second cavity, a pouring channel, a first riser channel and a second riser channel; a material taking assembly is installed above the first side mold plate and the second side mold plate. The pouring channel, the first riser channel and the second riser channel are designed on the side of the cavity, so that the aluminum alloy liquid is uniformly and synchronously filled into four half cavities from bottom to top, various defects caused by the pouring gate on the top surface of the cavity are solved, and the forming quality of the top surface, the pin hole and the stepped surface of the piston is effectively ensured.

Description

Technical Field

[0001] This invention relates to the field of piston processing technology, specifically to a side-mounted riser and gating piston casting mold. Background Technology

[0002] In the domestic aluminum piston casting production process, a casting method with risers on the top surface is generally adopted. This design allows the piston top surface to achieve better macroscopic quality and mechanical properties, thereby obtaining more qualified products and better overall product quality.

[0003] However, some pistons require the top surface to remain unmachined, which means the top riser process cannot be used. Most manufacturers or mold design companies will use a shrinkage sac on the top surface to improve defects such as porosity and shrinkage in the upper part of the piston. However, in the molding process of this type of mold with a shrinkage sac, the casting liquid flows from top to bottom, and the upper structure solidifies first, followed by the lower structure. This does not conform to the principle of sequential solidification, resulting in poor molding effect of the lower structure. Specifically, the strength and molding quality of the piston's top surface, pin hole, and skirt step surface are poor.

[0004] In summary, there is a current need for a piston casting mold that can improve the quality of piston forming. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a side-mounted riser piston casting mold, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A side-mounted piston casting mold with risers and gating includes a base. A first side template and a second side template are symmetrically slidably mounted on the surface of the base. A first pushing component is connected to the back of the first side template, and a second pushing component is connected to the back of the second side template. Two sets of central columns are installed at the center of the surface of the base, and the central columns are located between the first side template and the second side template.

[0008] The first side template and the second side template have the same structure. The inner side of the first side template is mirror-symmetrically provided with a first cavity, a second cavity, a gating channel, a first riser channel, and a second riser channel. The outlet of the gating channel is connected in parallel to the bottom of the first cavity and the second cavity. The inlet of the first riser channel is connected to the top of the first cavity. The inlet of the second riser channel is connected to the top of the second cavity. The center of the first cavity and the second cavity are both provided with a mating groove that matches the central column.

[0009] A material handling assembly is installed above the first and second side templates. The material handling assembly is used to clamp the cast piston workpiece, and the top of the material handling assembly is connected to the unloading and transfer assembly.

[0010] Furthermore, the gating channel is inverted T-shaped, and the first riser channel and the second riser channel are both L-shaped and mirror-symmetrically arranged.

[0011] Furthermore, the first cavity is a semi-cylindrical cavity structure, and the top of the interior of the first cavity is conical.

[0012] Furthermore, the top of the first cavity is provided with a horizontally extending protrusion, and the bottom of the first cavity is provided with a vertically extending protrusion. The protrusion is used to process the pin hole on the piston, and the protrusion is used to process the stepped surface at the bottom of the piston. The entrance of the first riser channel is located above the protrusion.

[0013] Furthermore, the bottom end of the central column is provided with a support column, the outer diameter of which is smaller than that of the central column. The mating groove is adapted to the support column, and the radius of the central column is smaller than that of the first cavity. When the first side template and the second side template are mated, the bottom surface of the central column is in contact with the inner bottom surface of the first cavity, and the area between the central column and the first cavity is the casting cavity.

[0014] Furthermore, the central column is provided with a receiving hole for inserting the protruding column, and the protruding piece is placed in the casting cavity.

[0015] Furthermore, the piston preliminary workpiece includes a gate connector, a first riser connector, a second riser connector, a first cylinder body, and a second cylinder body. The material handling assembly includes a first material handling plate, a second material handling plate, a connecting rod, and a pneumatic rod. The top surfaces of the first material handling plate and the second material handling plate are connected as one unit by the connecting rod. The top surface of the connecting rod is connected to the pneumatic rod, which is installed below the material transfer assembly. The first material handling plate is inserted between the vertical portion of the first riser connector and the vertical portion of the gate connector, and the second material handling plate is inserted between the vertical portion of the second riser connector and the vertical portion of the gate connector.

[0016] Furthermore, the first and second material-receiving plates have the same structure. The first material-receiving plate has a first guide groove on one side and a second guide groove on the other side. The vertical part of the first riser connector is inserted into the first guide groove, and the vertical part of the gate connector is inserted into the second guide groove. The bottom surface of the first material-receiving plate has a receiving bottom groove. The first guide groove, the receiving bottom groove, and the second guide groove are arranged in a U-shape. A retaining strip is installed at the bottom of the inner wall of the receiving bottom groove, and the horizontal part of the gate connector is inserted into the receiving bottom groove.

[0017] This invention provides a side-mounted riser and gating piston casting mold. Compared with the prior art, it has the following advantages:

[0018] By designing a gating channel, a first riser channel, and a second riser channel on the side of the cavity, the molten aluminum alloy can be uniformly and synchronously filled into the four half cavities from bottom to top. This solves the various defects caused by opening a gating riser on the top surface of the cavity and effectively ensures the forming quality of the piston's top surface, pin hole, and stepped surface.

[0019] While clamping the horizontal part of the gate connector, the first and second pick-up plates can also support the vertical parts of the first and second riser connectors from the inside out, thereby filling the empty part of the piston pre-made workpiece, increasing the overall strength of the piston pre-made workpiece, and preventing the connection of the first riser connector, the second riser connector, and the gate connector from breaking prematurely during clamping and transfer. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the side-mounted piston casting mold structure of the present invention is shown;

[0022] Figure 2 A schematic diagram of the side template structure of the present invention is shown;

[0023] Figure 3 A schematic diagram of the mold in the closed state of the present invention is shown;

[0024] Figure 4 It shows Figure 3 A magnified structural diagram at point A;

[0025] Figure 5 A schematic diagram of the piston preliminary connecting component structure of the present invention is shown;

[0026] Figure 6 A schematic diagram of the clamping state structure of the material handling component of the present invention is shown;

[0027] Figure 7 A schematic diagram of the assembly structure of the material receiving plate and the connecting member of the present invention is shown;

[0028] Figure 8 A schematic diagram of the material handling plate structure of the present invention is shown;

[0029] The figure shows: 1. Base; 2. First side template; 21. Sprue channel; 22. First riser channel; 23. Second riser channel; 24. First cavity; 241. Protruding column; 242. Protruding piece; 25. Second cavity; 26. Mating groove; 3. First pushing assembly; 4. Second side template; 5. Second pushing assembly; 6. Material transfer assembly; 61. Material transfer track; 62. Moving platform; 7. Material picking assembly; 71. First picking plate; 711. First guide groove; 712. Second guide groove; 713. Receiving bottom groove; 714. Clamping strip; 72. Second picking plate; 73. Connecting rod; 74. Pneumatic rod; 8. Central column; 81. Support column; 82. Receiving hole; 9. Piston pre-made workpiece; 91. Sprue connector; 92. First riser connector; 93. Second riser connector; 94. First cylinder body; 95. Second cylinder body. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1

[0032] To address the technical problems in the background section, the following side-mounted riser and gate piston casting mold is provided:

[0033] Combination Figures 1-4 As shown, the side-mounted piston casting mold with gating and riser provided by the present invention includes a base 1. A first side template 2 and a second side template 4 are symmetrically slidably mounted on the surface of the base 1. A first pushing component 3 is connected to the back of the first side template 2, and a second pushing component 5 is connected to the back of the second side template 4. Two sets of central columns 8 are installed at the center of the surface of the base 1, and the central columns 8 are located between the first side template 2 and the second side template 4.

[0034] The first side template 2 and the second side template 4 have the same structure. The inner side of the first side template 2 is mirror-symmetrically provided with a first cavity 24, a second cavity 25, a gating channel 21, a first riser channel 22, and a second riser channel 23. The outlet of the gating channel 21 is connected in parallel to the bottom of the interior of the first cavity 24 and the second cavity 25. The inlet of the first riser channel 22 is connected to the top of the interior of the first cavity 24. The inlet of the second riser channel 23 is connected to the top of the interior of the second cavity 25. The center of the first cavity 24 and the second cavity 25 are both provided with a mating groove 26 that is adapted to the central column 8.

[0035] A material handling assembly 7 is installed above the first side template 2 and the second side template 4. The material handling assembly 7 is used to clamp the cast piston workpiece. The top of the material handling assembly 7 is connected to the unloading and transfer assembly 6.

[0036] The above solution, by designing a gating channel 21, a first riser channel 22, and a second riser channel 23 on the side of the cavity, allows the aluminum alloy liquid to be filled into the four half cavities uniformly and synchronously from bottom to top. This solves the various defects caused by opening gating and risers on the top surface of the cavity and effectively ensures the forming quality of the piston's top surface, pin hole, and stepped surface.

[0037] In this embodiment, the gating channel 21 is inverted T-shaped, and the first riser channel 22 and the second riser channel 23 are both L-shaped and mirror-symmetrically arranged. This design ensures stable dispersion and flow of the molten metal.

[0038] In this embodiment, the first cavity 24 is a semi-cylindrical cavity structure, and the top of the interior of the first cavity 24 is conical.

[0039] In this embodiment, the top of the first cavity 24 is provided with a horizontally extending protrusion 241, and the bottom of the first cavity 24 is provided with a vertically extending protrusion 242. The protrusion 241 is used to process the pin hole on the piston, and the protrusion 242 is used to process the stepped surface at the bottom of the piston. The inlet of the first riser channel 22 is located above the protrusion 241. The above design can realize the rapid forming of the pin hole and stepped surface of the piston, and the forming quality is high, without affecting demolding.

[0040] In this embodiment, the bottom end of the central column 8 is provided with a support column 81. The outer diameter of the support column 81 is smaller than that of the central column 8. The mating groove 26 is adapted to the support column 81. The radius of the central column 8 is smaller than the radius of the first cavity 24. When the first side template 2 and the second side template 4 are mated, the bottom surface of the central column 8 is in contact with the inner bottom surface of the first cavity 24. The area between the central column 8 and the first cavity 24 is a casting cavity. The central column 8 is used to machine the central groove of the piston.

[0041] In this embodiment, the central column 8 is provided with a receiving hole 82 for inserting the protruding column 241, and the protruding plate 242 is placed in the casting cavity.

[0042] Example 2

[0043] like Figures 5-8 As shown, based on the above embodiments, this embodiment further provides the following:

[0044] To achieve rapid and stable unloading of the piston preliminary workpiece 9 processed by the above mold, the following solution is proposed:

[0045] In this embodiment, the piston initial workpiece 9 includes a gate connector 91, a first riser connector 92, a second riser connector 93, a first cylinder 94, and a second cylinder 95. The material handling assembly 7 includes a first material handling plate 71, a second material handling plate 72, a connecting rod 73, and a pneumatic rod 74. The top surfaces of the first material handling plate 71 and the second material handling plate 72 are connected as one unit by the connecting rod 73. The top surface of the connecting rod 73 is connected to the pneumatic rod 74. The pneumatic rod 74 is installed below the material transfer assembly 6. The first material handling plate 71 is inserted between the vertical portion of the first riser connector 92 and the vertical portion of the gate connector 91. The second material handling plate 72 is inserted between the vertical portion of the second riser connector 93 and the vertical portion of the gate connector 91.

[0046] In this embodiment, the first material taking plate 71 and the second material taking plate 72 have the same structure. The first material taking plate 71 has a first guide groove 711 on one side and a second guide groove 712 on the other side. The vertical part of the first riser connector 92 is inserted into the first guide groove 711, and the vertical part of the gate connector 91 is inserted into the second guide groove 712. The bottom surface of the first material taking plate 71 has a receiving bottom groove 713. The first guide groove 711, the receiving bottom groove 713, and the second guide groove 712 are arranged in a U-shape. A retaining strip 714 is installed at the bottom of the inner wall of the receiving bottom groove 713. The horizontal part of the gate connector 91 is inserted into the receiving bottom groove 713.

[0047] The first and second pick-up plates 71 and 72 can be precisely adapted to the shape of the piston pre-made workpiece 9. While clamping the horizontal part of the gate connector 91, the first and second pick-up plates 71 and 72 can also support the vertical parts of the first riser connector 92 and the second riser connector 93 from the inside, thereby filling the empty part of the piston pre-made workpiece 9, increasing the overall strength of the piston pre-made workpiece 9, and preventing the connection of the first riser connector 92, the second riser connector 93, and the gate connector 91 from breaking prematurely during clamping and transfer.

[0048] The first push assembly 3 and the second push assembly 5 have the same structure. The first push assembly 3 includes a fixed plate and another set of pneumatic rods.

[0049] The unloading and transfer assembly 6 includes an unloading and transfer track 61 and a moving platform 62. A pneumatic rod 74 is installed below the moving platform 62, and the moving platform 62 moves along the unloading and transfer track 61.

[0050] Working principle and usage process of this invention:

[0051] Mold closing: The first pushing component 3 pushes the first side template 2 to move inward, and the second pushing component 5 pushes the second side template 4 to move inward. When the first side template 2 and the second side template 4 are in contact, the cavities in the two side templates are relatively combined, and the central column 8 is placed in a complete cavity.

[0052] Casting: Molten aluminum alloy is poured into the gating channel 21 and then dispersed into the casting cavities of each complete mold cavity. Excess liquid flows out from the riser channel.

[0053] Cooling: After casting, cooling water is poured in to accelerate the cooling rate of the molten liquid and obtain the piston preliminary workpiece 9;

[0054] Demolding: The first side template 2 and the second side template 4 move outward, the material taking component 7 moves downward, the first material taking plate 71 extends into the vertical part of the first riser connector 92 and the vertical part of the gate connector 91, the second material taking plate 72 extends into the vertical part of the second riser connector 93 and the vertical part of the gate connector 91, the horizontal part of the gate connector 91 squeezes the retaining strip 714 and gets stuck in the receiving bottom groove 713; the material taking component 7 moves upward, which can drive the gate connector 91 to leave the mold and transfer to the quenching process.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A side-mounted riser and gating piston casting mold, characterized in that: Includes a base, on which a first side template and a second side template are symmetrically slidably mounted. A first pushing component is connected to the back of the first side template, and a second pushing component is connected to the back of the second side template. Two sets of central columns are installed at the center of the base surface, with the central columns located between the first side template and the second side template. The first side template and the second side template have the same structure. The inner side of the first side template is mirror-symmetrically provided with a first cavity, a second cavity, a gating channel, a first riser channel, and a second riser channel. The outlet of the gating channel is connected in parallel to the bottom of the first cavity and the second cavity. The inlet of the first riser channel is connected to the top of the first cavity. The inlet of the second riser channel is connected to the top of the second cavity. The center of the first cavity and the second cavity are both provided with a mating groove that matches the central column. A material handling assembly is installed above the first and second side templates. The material handling assembly is used to clamp the cast piston workpiece. The top of the material handling assembly is connected to the unloading and transfer assembly. The first cavity is a semi-cylindrical cavity structure, and the top of the interior of the first cavity is conical; The first cavity has a horizontally extending protrusion at the top and a vertically extending protrusion at the bottom. The protrusion is used to machine the pin hole on the piston, and the protrusion is used to machine the stepped surface at the bottom of the piston. The entrance of the first riser channel is located above the protrusion. The bottom end of the central column is provided with a support column. The outer diameter of the support column is smaller than that of the central column. The mating groove is adapted to the support column. The radius of the central column is smaller than that of the first cavity. When the first side template and the second side template are mated, the bottom surface of the central column is in contact with the inner bottom surface of the first cavity. The area between the central column and the first cavity is the casting cavity. The piston workpiece includes a gate connector, a first riser connector, a second riser connector, a first cylinder body, and a second cylinder body. The material handling assembly includes a first material handling plate, a second material handling plate, a connecting rod, and a pneumatic rod. The top surfaces of the first material handling plate and the second material handling plate are connected as one unit by the connecting rod. The top surface of the connecting rod is connected to the pneumatic rod, which is installed below the material transfer assembly. The first material handling plate is inserted between the vertical part of the first riser connector and the vertical part of the gate connector. The second material handling plate is inserted between the vertical part of the second riser connector and the vertical part of the gate connector. The first and second material receiving plates have the same structure. The first material receiving plate has a first guide groove on one side and a second guide groove on the other side. The vertical part of the first riser connector is inserted into the first guide groove, and the vertical part of the gate connector is inserted into the second guide groove. The bottom surface of the first material receiving plate has a receiving bottom groove. The first guide groove, the receiving bottom groove, and the second guide groove are arranged in a U-shape. A retaining strip is installed at the bottom of the inner wall of the receiving bottom groove, and the horizontal part of the gate connector is inserted into the receiving bottom groove.

2. The side-mounted riser and gate piston casting mold according to claim 1, characterized in that: The gating channel is inverted T-shaped, and the first riser channel and the second riser channel are both L-shaped and mirror-symmetrically arranged.

3. The side-mounted riser and gate piston casting mold according to claim 1, characterized in that: The central column has a receiving hole for inserting the protruding column, and the protruding piece is placed in the casting cavity.

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