Lengthened thin-wall casting adjusting sheet bottom plate profiling die

Abstract

The invention belongs to the field of investment casting, and particularly relates to a profiling die for a lengthened thin-wall casting adjusting sheet bottom plate. According to the technical scheme, the elongated thin-wall casting adjusting sheet bottom plate profiling mold comprises a bottom plate, a supporting plate, an ejection mechanism, a lower mold, a secondary mold splitting mechanism and an upper mold, the bottom plate, the supporting plate, the lower mold and the upper mold are sequentially installed from bottom to top, the secondary mold splitting mechanism is arranged in the lower mold, and the ejection mechanism is arranged between the bottom plate and the lower mold. According to the elongated thin-wall casting adjusting sheet bottom plate profiling mold, casting wax patterns can be produced in batches, and the part quality and the size precision required by design are guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of investment casting, and in particular relates to a lengthened thin-wall casting adjusting plate bottom plate pressing die. Background Art

[0002] The regulating plate bottom plate casting of a certain aircraft engine is 680mm long, 120mm wide, and the bottom plate thickness is only 1mm. It is an elongated thin-walled casting. The regulating plate bottom plate casting is formed by integrating the original regulating plate bottom plate, the expanded regulating plate head, and the V-shaped retaining edge. The overall mold structure of this integrated elongated complex thin-walled part is complex, and the design and manufacturing are very difficult. The elongated thin-walled casting regulating plate bottom plate is an important load-bearing component of the aircraft engine. It has high dimensional accuracy requirements and complex manufacturing processes. The die-casting mold is an important equipment for manufacturing the investment mold and is also the key to forming the casting size. A reasonable mold structure and parting method are required to ensure that the casting size is qualified. Existing die-casting molds often deform the bottom plate and damage the wax mold during the demolding process, which does not meet the technical requirements. Summary of the invention

[0003] The invention provides an elongated thin-wall casting adjusting plate bottom plate pressing die, which can be used for batch production of casting wax molds and ensure the quality of parts and the dimensional accuracy required by design.

[0004] The technical solution of the present invention is as follows:

[0005] The invention discloses an elongated thin-walled casting adjusting plate bottom plate pressing die, comprising a bottom plate, a support plate, an ejection mechanism, a lower die, a secondary mold separation mechanism and an upper die. The bottom plate, the support plate, the lower die and the upper die are installed in sequence from bottom to top, the secondary mold separation mechanism is arranged in the lower die, and the ejection mechanism is arranged between the bottom plate and the lower die.

[0006] Furthermore, in the elongated thin-walled casting adjustment plate bottom plate pressing mold, six parting cavities are provided under the mold cavity of the lower mold, and the six parting cavities are divided into three groups distributed along the longitudinal direction of the casting wax mold, and the two parting cavities in each group are symmetrically arranged; the secondary parting mechanism includes six manual parting components distributed along the longitudinal direction of the casting wax mold, and the manual parting component includes a handle and a molding block; the molding block is placed in the parting cavity, and the handle is installed together with the outer wall of the parting cavity in a sliding fit, and the end of the handle is fixedly connected to the molding block.

[0007] Furthermore, in the elongated thin-walled casting adjusting plate bottom plate pressing mold, a plurality of support blocks are provided between the bottom plate and the support plate.

[0008] Furthermore, in the elongated thin-walled casting adjusting plate bottom plate pressing mold, a plurality of support columns are provided between the bottom plate and the lower mold, a front support plate is provided on the front side, a rear support plate is provided on the rear side, and protective plates are provided on both sides.

[0009] Furthermore, in the elongated thin-walled casting adjusting plate bottom plate pressing mold, the ejection mechanism includes a cylinder, a top plate and a push rod, a plurality of cylinders are arranged between the bottom plate and the support plate, the top plate is placed on the support plate, and the output end of the cylinder is fixedly connected to the top plate; a plurality of push rods are installed together in a sliding fit with the lower mold, and the bottom end of the push rod is fixedly connected to the top plate.

[0010] Furthermore, in the elongated thin-walled casting adjusting plate bottom plate pressing mold, the upper mold is evenly provided with 5 exhaust inserts along the longitudinal middle line of the casting wax mold.

[0011] Furthermore, in the elongated thin-walled casting adjusting plate bottom plate pressing mold, the upper mold is provided with 10 delay spring blocks along the longitudinal direction of the casting wax mold, and the delay spring blocks are symmetrically distributed in a group of two, and the casting wax mold is separated from the upper mold after the mold is opened.

[0012] The beneficial effects of the present invention are as follows: the mold structure of the present invention is easy for an operator to operate, can reduce the difficulty of operation, improve production efficiency, can carry out batch production of casting wax molds, and ensure the quality of parts and the dimensional accuracy required by the design. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the left view of the profiling die for the base plate of the elongated thin-walled casting adjustment plate;

[0014] Figure 2 for Figure 1 Middle AA section view;

[0015] Figure 3 for Figure 1 Middle BB section view;

[0016] Figure 4 Schematic diagram of the casting wax pattern placed in the lower mold. DETAILED DESCRIPTION

[0017] like Figure 1-4 As shown, an elongated thin-walled casting regulating plate bottom plate pressing mold includes a bottom plate 3, a support plate 8, an ejection mechanism, a lower mold 2, a secondary mold separation mechanism and an upper mold 1. The bottom plate 3, the support plate 8, the lower mold 2 and the upper mold 1 are installed in sequence from bottom to top, the secondary mold separation mechanism is arranged in the lower mold 2, and the ejection mechanism is arranged between the bottom plate 3 and the lower mold 2.

[0018] A plurality of support blocks 11 are provided between the bottom plate 3 and the support plate 8; a plurality of support columns 12 are provided between the bottom plate 3 and the lower mold 2, a front support plate 4 is provided on the front side, a rear support plate 5 is provided on the rear side, and protective plates 6 are provided on both sides.

[0019] Six parting cavities 16 are provided under the cavity of the lower mold 2, and the six parting cavities 16 are divided into three groups and distributed longitudinally along the casting wax mold 20, and the two parting cavities 16 in each group are arranged symmetrically; the secondary parting mechanism includes six manual parting components distributed longitudinally along the casting wax mold 20, and the manual parting component includes a handle 7 and a molding block 17; the molding block 17 is placed in the parting cavity 16, and the handle 7 is installed together with the outer wall of the parting cavity 16 in a sliding manner, and the end of the handle 7 is fixedly connected to the molding block 17.

[0020] The ejection mechanism includes a cylinder 10, a top plate 9 and a push rod 13. A plurality of cylinders 10 are arranged between the bottom plate 3 and the support plate 8. The top plate 9 is placed on the support plate 8. The output end of the cylinder 10 is fixedly connected to the top plate 9. A plurality of push rods 13 are installed together with the lower mold 2 in a sliding fit. The bottom end of the push rod 13 is fixedly connected to the top plate 9.

[0021] The upper mold 1 is evenly provided with 5 exhaust inserts 15 along the longitudinal middle line of the casting wax mold 20; the upper mold 1 is provided with 10 delay spring blocks along the longitudinal direction of the casting wax mold 20, and the delay spring blocks are symmetrically distributed in a group of two. After the mold is opened, the casting wax mold 20 is separated from the upper mold 1.

[0022] The working process is as follows:

[0023] Step 1: Use a high-pressure wax injection machine to fix the bottom plate 3 of the elongated thin-walled casting adjustment plate bottom plate pressing mold on the workbench; set the molding parameters: mold closing pressure 5MPa, mold material temperature 70℃~75℃, injection pressure 2MPa~3MPa, wax injection time 15s~60s, holding time 20s~30s; the molding material is high-temperature liquid wax;

[0024] Step 2: Start the equipment and close the mold, inject wax material, and the five exhaust inserts 15 of the upper mold 1 can prevent bubbles from being generated in the casting wax model 20 due to holding of air during the molding process; after holding the pressure for a certain period of time, the upper mold 1 is automatically opened, and the delay spring pushes the casting wax model 20 away. After the mold is opened, the casting wax model 20 automatically stays on the lower mold 2;

[0025] Step 3: Manually drag the six handles 7 respectively to drive the corresponding molding blocks 17 to retreat, complete the secondary mold separation, and loosen the reinforcing ribs at the bottom of the casting wax model 20;

[0026] Step 4: Open the cylinder 10, drive the ejector rod 13 through the ejector plate 9 to eject the casting wax mold 20 upward, and the operator manually takes out the casting wax mold 20; Step 5: reset the mold to prepare for the next pressing.

Claims

1. An elongated thin-walled casting adjusting plate bottom plate pressing die, characterized in that: It includes a bottom plate, a support plate, an ejection mechanism, a lower mold, a secondary mold separation mechanism and an upper mold. The bottom plate, support plate, lower mold and upper mold are installed in sequence from bottom to top. The secondary mold separation mechanism is arranged in the lower mold, and the ejection mechanism is arranged between the bottom plate and the lower mold.

2. The elongated thin-walled casting adjusting plate bottom plate pressing mold according to claim 1 is characterized in that: Six parting cavities are arranged under the cavity of the lower mold, and the six parting cavities are divided into three groups and distributed along the longitudinal direction of the casting wax mold, and the two parting cavities in each group are arranged symmetrically; the secondary parting mechanism includes six manual parting assemblies distributed along the longitudinal direction of the casting wax mold, and the manual parting assembly includes a handle and a molding block; the molding block is placed in the parting cavity, and the handle is installed together with the outer wall of the parting cavity in a sliding fit, and the end of the handle is fixedly connected to the molding block.

3. The elongated thin-walled casting adjusting plate bottom plate pressing die according to claim 1, characterized in that: A plurality of supporting blocks are arranged between the bottom plate and the supporting plate.

4. The elongated thin-walled casting adjusting plate bottom plate pressing die according to claim 1, characterized in that: A plurality of support columns are arranged between the bottom plate and the lower mold, a front support plate is arranged on the front side, a rear support plate is arranged on the rear side, and protective plates are arranged on both sides.

5. The elongated thin-walled casting adjusting plate bottom plate pressing die according to claim 1, characterized in that: The ejection mechanism includes a cylinder, a top plate and a push rod, a plurality of cylinders are arranged between the bottom plate and the support plate, the top plate is placed on the support plate, and the output end of the cylinder is fixedly connected to the top plate; a plurality of push rods are installed together in a sliding fit with the lower mold, and the bottom end of the push rod is fixedly connected to the top plate.

6. The elongated thin-walled casting adjusting plate bottom plate pressing die according to claim 1, characterized in that: The upper mold is evenly provided with 5 exhaust inserts along the middle line of the longitudinal direction of the casting wax mold.

7. The elongated thin-walled casting adjusting plate bottom plate pressing die according to claim 1, characterized in that: The upper mold is provided with 10 delay spring blocks along the longitudinal direction of the casting wax mold, and the delay spring blocks are symmetrically distributed in a group of two, and the casting wax mold is separated from the upper mold after the mold is opened.

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