Die for lining with wing plate

Abstract

The utility model discloses a mould for a bushing with a wing plate, the bushing with the wing plate comprises a cylinder body and the wing plate at the head part of the cylinder body, the wing plate comprises an outer flange, an inner flange and an annular cylinder body between the outer flange and the inner flange, and a plurality of radial hollow grooves are uniformly distributed on the annular wall of the annular cylinder body along the circumferential direction; the mold comprises a mold shell, a module set, a pressing plate and an annular baffle. An inner hole of the mold shell is a multi-section stepped hole, the module set is limited in the multi-section stepped hole through the pressing plate, and a casting cavity of the bush is formed between the annular baffle and the pressing plate. Centrifugal casting is utilized, the internal quality of the bushing is improved, the head wing plate of the bushing is directly manufactured and formed, the bushing machining efficiency is improved, and disassembly and assembly are convenient; and the mold is simple in structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of casting, and in particular relates to a mold for a wing plate bushing. Background Art

[0002] For bushings, the conventional structure is similar to the hollow tube structure, and is usually completed by sand casting or centrifugal casting. For bushings with special structures, such as bushings with wing plates on the head, the product structure is complex and difficult to manufacture. Currently, casting is used to complete the product blank production, and bushings with round flanges are directly produced at the head wing plate. However, the following problems still exist:

[0003] The head wing plate is thick and large, with obvious heat nodes, and the internal quality of this part is not ideal; CNC machining must be used to remove materials from the special-shaped cavity, which is inefficient and has high processing costs; if centrifugal casting is used to cast the bushing head with a wing plate, it can only be demolded in one direction, the bushing is long, and it is easy to get stuck during demolding, making demolding difficult. Summary of the invention

[0004] The utility model aims to overcome the shortcomings of the prior art and provides a mold which has a simple structure, is easy to produce and manufacture, and can improve the quality and processing efficiency of the wing plate bushing.

[0005] To achieve the above-mentioned purpose, the utility model provides a mold for a bushing with a wing plate, wherein the bushing with a wing plate comprises a cylinder and a wing plate at the head of the cylinder, the wing plate comprises an outer flange, an inner flange and an annular cylinder between the outer flange and the inner flange, and a plurality of radial hollow grooves are evenly arranged on the annular wall of the annular cylinder along the circumferential direction; the mold comprises a mold shell, a module group, a pressure plate and an annular baffle; the inner hole of the mold shell is a multi-stage stepped hole, the module group is limited in the multi-stage stepped hole by the pressure plate, and a casting cavity of the bushing is formed between the annular baffle and the pressure plate.

[0006] Furthermore, the multi-section step hole includes a cylindrical hole body, a small cylindrical hole at the head of the cylindrical hole body, a tapered hole at the end of the small cylindrical hole, a large cylindrical hole at the end of the tapered hole, and a tail cylindrical hole at the tail end of the cylindrical hole body; the inner diameter of the small cylindrical hole is larger than the outer diameter of the cylindrical hole body, the inner diameter of the small end face of the tapered hole is larger than the outer diameter of the small cylindrical hole, the inner diameter of the large cylindrical hole is larger than the outer diameter of the large end face of the tapered hole, and the inner diameter of the tail cylindrical hole is larger than the outer diameter of the cylindrical hole body; the end face of the small cylindrical hole and the small end face of the tapered hole form a limiting step face, the large end face of the tapered hole and the end face of the large cylindrical hole form an installation step face, and the end face of the tail cylindrical hole and the end face of the cylindrical hole body form a limiting stop.

[0007] Furthermore, the module group includes a fixing ring and a plurality of wing panel outer molds, and the plurality of wing panel outer molds are evenly installed on the grooves on the inner ring surface of the fixing ring along the circumferential direction of the fixing ring, and the wing panel outer molds are fixedly connected to the fixing ring by hexagon socket cylindrical head screws.

[0008] Furthermore, the fixing ring is evenly divided into multiple fixing ring blocks, all of which are installed in the tapered holes of the mold shell, and the fixing ring blocks are fixed by squeezing the tapered surfaces of the tapered holes until the inner end surfaces of the fixing ring blocks abut against the limiting step surfaces.

[0009] Furthermore, the pressure plate is embedded in the large cylindrical hole until the steps at both ends of the pressure plate abut against the installation step surface to limit the axial position of the fixing ring, and the tapered pin is fixed in the tapered pin hole on the outer cylindrical surface of the head of the mold shell by screws to lock the pressure plate; the small cylindrical hole is the casting cavity of the inner flange, and the cavity between the end face of the fixing ring and the end face of the pressure plate is the casting cavity of the outer flange.

[0010] Furthermore, the annular baffle is built into the tail cylindrical hole until the end face of the annular baffle abuts against the limit stop, and the conical pin is fixed in the conical pin hole of the tail outer cylindrical surface of the mold shell by screws to lock the annular baffle.

[0011] Furthermore, the cylindrical hole body, the small cylindrical hole, the tapered hole, the large cylindrical hole and the tail cylindrical hole are coaxially arranged.

[0012] Furthermore, the outer contour surface of the wing plate outer mold is consistent with the inner contour surface of the radial hollow groove.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model is used for a mold with a wing plate bushing, and utilizes centrifugal casting, which not only improves the internal quality of the bushing, but also directly manufactures and shapes the head wing plate of the bushing, thereby improving the bushing processing efficiency and facilitating disassembly and assembly; and the mold structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the bushing with wing plate of the utility model;

[0015] Figure 2 This is a schematic diagram of the mold structure of the utility model;

[0016] Figure 3 for Figure 2 Schematic diagram of the internal structure of the middle mold shell;

[0017] Figure 4 for Figure 2 AA schematic diagram. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below in conjunction with specific embodiments to facilitate a clearer understanding of the present invention, but they do not constitute a limitation on the present invention.

[0019] like Figure 1The wing plate bushing shown includes a cylinder 1 and a wing plate at the head of the cylinder 1. The wing plate includes an outer flange 4, an inner flange 2 and an annular cylinder between the outer flange 4 and the inner flange 2. A plurality of radial hollow grooves 3 are evenly arranged along the circumferential direction on the annular wall of the annular cylinder.

[0020] like Figure 2 , 3 The mold shown includes a mold shell 5, a module group, a pressure plate 8 and an annular baffle 12. The inner hole of the mold shell 5 is a multi-stage stepped hole, which includes a cylindrical hole body 20, a small cylindrical hole 13 at the head of the cylindrical hole body 20, a tapered hole 18 at the end of the small cylindrical hole 13, a large cylindrical hole 17 at the end of the tapered hole 18, and a tail cylindrical hole 15 at the tail end of the cylindrical hole body 20; the cylindrical hole body 20, the small cylindrical hole 13, the tapered hole 18, the large cylindrical hole 17 and the tail cylindrical hole 15 are coaxially arranged, and the inner diameter of the small cylindrical hole 13 is larger than the outer diameter of the cylindrical hole body 20 , the inner diameter of the small end face of the tapered hole 18 is larger than the outer diameter of the small cylindrical hole 13, the inner diameter of the large cylindrical hole 17 is larger than the outer diameter of the large end face of the tapered hole 18, and the inner diameter of the tail cylindrical hole 15 is larger than the outer diameter of the cylindrical hole body 20, that is, the end face of the small cylindrical hole 13 and the small end face of the tapered hole 18 form a limiting step surface 21, the large end face of the tapered hole 18 and the end face of the large cylindrical hole 17 form an installation step surface 22, and the end face of the tail cylindrical hole 15 and the end face of the cylindrical hole body 20 form a limiting stop 16.

[0021] like Figure 4 The module group shown includes a fixed ring and a plurality of wing plate outer molds 11. The plurality of wing plate outer molds 11 are evenly installed on the groove of the inner ring surface of the fixed ring along the circumferential direction of the fixed ring, and the wing plate outer mold 11 is fixedly connected to the fixed ring by a hexagon socket head screw 10, and the outer contour surface of the wing plate outer mold 11 is consistent with the inner profile of the radial hollow groove 3. In order to facilitate the installation of the fixed ring in the tapered hole 18 of the mold shell 5, the fixed ring is evenly divided into a plurality of fixed ring blocks 9; all fixed ring blocks 9 are installed in the tapered hole 18 of the mold shell 5. Since the inner profile of the tapered hole 18 is a tapered surface 19, the fixed ring block 9 is squeezed and fixed by the tapered surface 19 of the tapered hole 18 until the inner end surface of the fixed ring block 9 abuts against the limit step surface 21. The pressure plate 8 is built into the large cylindrical hole 17 until the steps at both ends of the pressure plate 8 abut against the installation step surface 22 to limit the axial position of the fixing ring, and the tapered pin 7 is fixed in the tapered pin hole of the head outer cylindrical surface of the mold shell 5 by screws 6 to lock the pressure plate 8; correspondingly, the annular baffle 12 is built into the tail cylindrical hole until the end face of the annular baffle 12 abuts against the limit stop, and the tapered pin 7 is fixed in the tapered pin hole of the tail outer cylindrical surface of the mold shell 5 by screws 6 to lock the annular baffle 12; a casting cavity of the bushing is formed between the annular baffle 12 and the pressure plate 8, the small cylindrical hole 13 is the casting cavity of the inner flange 2, and the cavity 14 between the end face of the fixing ring and the end face of the pressure plate is the casting cavity of the outer flange 4.

[0022] During centrifugal casting, the molten metal is injected into the mold through the center hole of the pressure plate 8. The mold rotates at high speed to generate centrifugal force for the metal liquid, which quickly fills the various cavities of the mold. After the metal liquid gradually cools down, it solidifies in the mold to form a complete bushing structure.

[0023] Mold demoulding method:

[0024] After the centrifugal casting mold is cooled to a certain temperature, the mold demolding operation is performed. The mold of the utility model can only be demolded in one direction. Loosen the screw 6 that fixes the cone pin 7, push the cone pin out of the cone pin hole of the mold shell, take out the annular baffle 12 and the pressure plate 8, and use the crane to place the entire mold shell 5 upright with the right end facing down, and the module group and the bushing are smoothly removed from the lower end of the mold shell 5. Loosen the hexagon socket head screw 10 on the module group fixed ring block 9, remove the fixed ring block 9, use the disassembly hole of the fixed ring block 9 itself, use the top screw to overcome the adhesion force to push out the fixed ring block 9, and remove the fixed ring block 9. Use the screw hole on the wing plate outer mold 11 as a disassembly hole to lift it out with a crane or use a pin puller to remove the wing plate outer mold 11 to complete the demolding of the bushing.

[0025] The wing plate outer mold 11 in the utility model mold not only plays the role of forming the wing plate cavity of the bushing, but also plays the role of cold iron during the cooling and solidification process of the bushing, preferentially cooling the wing plate part of the bushing, and improving the internal quality of the wing plate part. The centrifugal casting method not only further improves the internal quality of the bushing, but also directly manufactures the head wing plate of the bushing, improves the processing efficiency of the bushing, and is convenient for disassembly and assembly.

Claims

1. A mold for a bushing with a wing plate, the bushing with a wing plate comprising a cylinder (1) and a wing plate at the head of the cylinder (1), the wing plate comprising an outer flange (4), an inner flange (2) and an annular cylinder between the outer flange (4) and the inner flange (2), a plurality of radial hollow grooves (3) being evenly arranged along the circumferential direction on the annular wall of the annular cylinder; characterized in that: The mold comprises a mold shell (5), a module group, a pressure plate (8) and an annular baffle (12); the inner hole of the mold shell (5) is a multi-stage stepped hole, the module group is limited in the multi-stage stepped hole by the pressure plate (8), and a casting cavity of the bushing is formed between the annular baffle (12) and the pressure plate (8).

2. The mold for a wing plate bushing according to claim 1, characterized in that: The multi-stage stepped hole comprises a cylindrical hole body (20), a small cylindrical hole (13) at the head of the cylindrical hole body (20), a tapered hole (18) at the end of the small cylindrical hole (13), a large cylindrical hole (17) at the end of the tapered hole (18), and a tail cylindrical hole (15) at the tail end of the cylindrical hole body (20); the inner diameter of the small cylindrical hole (13) is larger than the outer diameter of the cylindrical hole body (20), the inner diameter of the small end face of the tapered hole (18) is larger than the outer diameter of the small cylindrical hole (13), and the large cylindrical hole (17) is larger than the outer diameter of the large cylindrical hole (18). The inner diameter of the hole (17) is larger than the outer diameter of the large end face of the tapered hole (18), the inner diameter of the tail cylindrical hole (15) is larger than the outer diameter of the cylindrical hole body (20), the end face of the small cylindrical hole (13) and the small end face of the tapered hole (18) form a limiting step face (21), the large end face of the tapered hole (18) and the end face of the large cylindrical hole (17) form a mounting step face (22), and the end face of the tail cylindrical hole (15) and the end face of the cylindrical hole body (20) form a limiting stop (16).

3. The mold for a wing plate bushing according to claim 2, characterized in that: The module group comprises a fixing ring and a plurality of wing panel outer moulds (11); the plurality of wing panel outer moulds (11) are evenly installed on the grooves of the inner ring surface of the fixing ring along the fixing ring at intervals in the circumferential direction; and the wing panel outer moulds (11) are fixedly connected to the fixing ring by means of hexagon socket head screws (10).

4. The mold for a wing plate bushing according to claim 3, characterized in that: The fixing ring is evenly divided into a plurality of fixing ring blocks (9), all of which are installed in the tapered hole (18) of the mold shell (5), and the fixing ring blocks (9) are squeezed and fixed by the tapered surface (19) of the tapered hole (18) until the inner end surface of the fixing ring block (9) abuts against the limiting step surface (21).

5. The mold for a wing plate bushing according to claim 4, characterized in that: The pressure plate (8) is built into the large cylindrical hole (17) until the steps at both ends of the pressure plate (8) abut against the mounting step surface (22) to limit the axial position of the fixing ring, and the tapered pin (7) is fixed in the tapered pin hole on the outer cylindrical surface of the head of the mold shell (5) by means of screws (6) to lock the pressure plate (8); the small cylindrical hole (13) is the casting cavity of the inner flange (2), and the cavity (14) between the end face of the fixing ring and the end face of the pressure plate is the casting cavity of the outer flange (4).

6. The mold for a wing plate bushing according to claim 2, characterized in that: The annular baffle (12) is built into the tail cylindrical hole until the end face of the annular baffle (12) abuts against the limit stop, and the conical pin (7) is fixed in the conical pin hole of the tail outer cylindrical surface of the mold shell (5) by a screw (6) to lock the annular baffle (12).

7. The mold for a wing plate bushing according to claim 2, characterized in that: The cylindrical hole body (20), the small cylindrical hole (13), the tapered hole (18), the large cylindrical hole (17) and the tail cylindrical hole (15) are coaxially arranged.

8. The mold for a wing plate bushing according to claim 3, characterized in that: The outer contour surface of the wing plate outer mold (11) is consistent with the inner contour surface of the radial hollow groove (3).

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