Metal casting mold capable of accurately fixing sand core

Abstract

The utility model relates to the technical field of sand core casting, in particular to a metal casting mold capable of accurately fixing a sand core, which comprises a lower mold and an upper mold, and fixing structures are arranged on two sides of the outer surface of the lower mold. Through a fixing structure, a first tooth plate drives a first wedge block to slide downwards on the outer surface of a sliding column, due to the fact that the bevel edge of the first wedge block is attached to the bevel edge of a second wedge block, a movable rod can move transversely, so that a third wedge block jacks up fourth wedge blocks, at the moment, a sand core can be placed in a forming groove, and the fourth wedge blocks on the two sides fix the sand core; when the lower mold and the upper mold are attached for casting, a connecting assembly is connected with hydraulic equipment, the upper mold moves downwards, a gear is meshed with a rotating rod and a second tooth plate, the first tooth plate drives a first wedge block to move upwards, at the moment, the bevel edge of the first wedge block is separated from the bevel edge of a second wedge block, and two springs are released to rebound; the third wedge blocks are pulled out of the side grooves, and the two fourth wedge blocks can be rapidly reset and collected into the lifting grooves.

Description

TECHNICAL FIELD

[0001] The utility model relates to sand core foundry technical field, concretely is a kind of metal casting mould with accurate sand core fixing. BACKGROUND

[0002] Sand core refers to the hollow sand block made by mixing sand material and binder, which is usually used to form the cavity or complex shape inside the casting during casting process. The principle of sand core making process is to extrude the sand with strong viscosity into a certain shape of core through special processing technology, which is used to cast metal in the model cavity to obtain different shaped castings. This process utilizes the sintering chemical change of sand core at high temperature to make the sand shrinkage rate smaller, thereby manufacturing fine and complex castings.

[0003] The existing sand core casting mold lacks a fixing structure for the sand core during use, which can cause the sand core to deviate to one side when the upper and lower mold blocks are overlapped, resulting in deviation of the shape of the casting and affecting normal use. Based on the existing technical deficiencies, the utility model designs a metal casting mold with accurate sand core fixing. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a metal casting mold with accurate sand core fixing, which has the advantages of fixing sand core and preventing deviation of the shape of the casting.

[0005] The utility model provides the following technical scheme: a metal casting mold with accurate sand core fixing, including lower mould and upper mould, the outer surface both sides of lower mould are provided with fixed structure, two fixed structures include installation frame, sliding column, moving rod and fourth wedge, the side of installation frame is fixed in lower mould, the inside of installation frame is fixed with sliding column, the outer surface of sliding column is equipped with first wedge and slides, the one end of moving rod is provided with second wedge, the bevel of second wedge is inlaid with the bevel of first wedge, the other end of moving rod is provided with third wedge, the bevel of third wedge is inlaid with the bevel of fourth wedge, the outer surface both sides of moving rod are installed with side block, one side of two side blocks is equipped with spring, and one end of two springs is fixedly connected with the inner wall of installation frame, the top of first wedge is installed with first toothed plate, the outer surface both sides of upper mould are installed with second toothed plate, the inside of installation frame is rotatably installed with rotating rod, the outer surface of rotating rod is fixedly installed with gear, and the outer surface of gear is mutually engaged with first toothed plate and second toothed plate.

[0006] As a preferred technical scheme of the utility model, the outer surface both sides of lower mould are provided with side groove, and two side grooves are slidably connected with moving rod.

[0007] As a preferred technical scheme of the utility model, lifting grooves are formed in the top of the lower mold on both sides, and the two lifting grooves are in sliding connection with the fourth wedge.

[0008] As a preferred technical scheme of the utility model, a forming groove is formed in the inside of the lower mold and the upper mold, and a grouting groove is formed in the outside of the lower mold and the upper mold on one side.

[0009] As a preferred technical scheme of the utility model, two sliding grooves are formed in the outside of the upper mold on one side, and the two sliding grooves are in sliding connection with the two mounting frames.

[0010] As a preferred technical scheme of the utility model, a fixing disc is mounted on the top of the upper mold.

[0011] As a preferred technical scheme of the utility model, a connecting assembly is mounted on the top of the fixing disc, and the connecting assembly is used for being connected with the hydraulic assembly.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1、The metal casting mold capable of accurately fixing sand cores, when the lower mold and the upper mold are separated, the first wedge is driven by the first toothed plate to slide downwards on the outside surface of the sliding column due to the arrangement of the gear, the first wedge inclined edge is in abutment with the second wedge inclined edge, so that the moving rod is transversely moved to make the third wedge lift the fourth wedge upwards, at this time, the sand core can be placed in the forming groove, and the sand core is fixed by the fourth wedges on both sides, when the lower mold and the upper mold need to be abutted for casting, the connecting assembly is connected with the hydraulic equipment, the upper mold is moved downwards, the first toothed plate drives the first wedge to move upwards through the meshing of the gear with the rotating rod and the second toothed plate, at this time, the first wedge inclined edge is separated from the abutment with the second wedge inclined edge, at this time, the two springs are released and rebounded, so that the third wedge is pulled out of the side groove, so that the two fourth wedges are quickly reset and collected in the lifting groove, without affecting the normal casting work, so that the sand core is fixed, and the shape deviation of the casting is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the appearance structure schematic view of the utility model;

[0015] Figure 2 It is the forming groove structure schematic view of the utility model;

[0016] Figure 3 It is the mounting frame structure schematic view of the utility model;

[0017] Figure 4 It is the spring structure schematic view of the utility model.

[0018] In the figure: 1, lower mold; 2, upper mold; 3, fixed structure; 31, mounting frame; 32, sliding column; 33, first wedge; 34, moving rod; 35, second wedge; 36, third wedge; 37, side block; 38, spring; 39, first toothed plate; 310, rotating rod; 311, gear; 312, second toothed plate; 313, fourth wedge; 4, side groove; 5, lifting groove; 6, forming groove; 7, grouting groove; 8, sliding groove; 9, fixed disc; 10, connecting assembly. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] Please refer to Figures 1-4 A metal casting mold capable of accurately fixing sand cores comprises a lower mold 1 and an upper mold 2, and the outer surfaces of the lower mold 1 are provided with fixed structures 3 on both sides; the two fixed structures 3 comprise a mounting frame 31, a sliding column 32, a moving rod 34 and a fourth wedge 313, the mounting frame 31 is fixed to the side of the lower mold 1, the sliding column 32 is fixed to the inside of the mounting frame 31, the outer surface of the sliding column 32 is slidably provided with a first wedge 33, one end of the moving rod 34 is provided with a second wedge 35, the inclined edge of the second wedge 35 is fitted with the inclined edge of the first wedge 33, the other end of the moving rod 34 is provided with a third wedge 36, the inclined edge of the third wedge 36 is fitted with the inclined edge of the fourth wedge 313, the outer surfaces of the moving rod 34 are provided with side blocks 37 on both sides, one side of the two side blocks 37 is provided with a spring 38, one end of the two springs 38 is fixedly connected with the inner wall of the mounting frame 31, the top of the first wedge 33 is provided with a first toothed plate 39, the outer surfaces of the upper mold 2 are provided with a second toothed plate 312 on both sides, a rotating rod 310 is rotatably installed in the inside of the mounting frame 31, a gear 311 is fixedly installed on the outer surface of the rotating rod 310, and the outer surface of the gear 311 is meshed with the first toothed plate 39 and the second toothed plate 312.

[0021] Please refer to Figures 2-4 The outer surfaces of the lower mold 1 are provided with side grooves 4 on both sides, and the two side grooves 4 are slidably connected with the moving rod 34. The top of the lower mold 1 is provided with lifting grooves 5 on both sides, and the two lifting grooves 5 are slidably connected with the fourth wedge 313. The inside of the lower mold 1 and the upper mold 2 is provided with a forming groove 6, and the outer surface of the lower mold 1 and the upper mold 2 is provided with a grouting groove 7 on one side. The outer surface of the upper mold 2 is provided with two sliding grooves 8 on one side, and the two sliding grooves 8 are slidably connected with the two mounting frames 31.

[0022] When the lower mold 1 is separated from the upper mold 2, the fourth wedge 313 on both sides fixes the sand core, when the lower mold 1 and the upper mold 2 need to be attached to cast, the connecting assembly 10 is connected with the hydraulic equipment, the upper mold 2 is moved downwards, at this time, the first toothed plate 39 drives the first wedge 33 to move upwards through the meshing of the gear 311, the rotating rod 310 and the second toothed plate 312, at this time, the inclined edge of the first wedge 33 is separated from the attachment of the inclined edge of the second wedge 35, at this time, the two springs 38 are released and rebound, so that the third wedge 36 is pulled out of the side groove 4, so that the two fourth wedges 313 are quickly reset and collected in the lifting groove 5.

[0023] Please refer to Figures 1-4 The top of the upper mold 2 is provided with a fixed disc 9. The top of the fixed disc 9 is provided with a connecting assembly 10, which is used to be connected with the hydraulic assembly.

[0024] When the metal casting mold capable of accurately fixing the sand core is used, in the initial state, first, the connecting assembly 10 is connected with the hydraulic equipment, when the lower mold 1 and the upper mold 2 are separated, the first toothed plate 39 drives the first wedge 33 to slide downwards on the outer surface of the sliding column 32 due to the setting of the gear 311, the moving rod 34 is transversely moved so that the third wedge 36 lifts the fourth wedge 313 upwards due to the attachment of the inclined edge of the first wedge 33 and the inclined edge of the second wedge 35, at this time, the sand core can be placed in the forming groove 6, and the sand core is fixed by the fourth wedge 313 on both sides, when the lower mold 1 and the upper mold 2 need to be attached to cast, the connecting assembly 10 is connected with the hydraulic equipment, the upper mold 2 is moved downwards, at this time, the first toothed plate 39 drives the first wedge 33 to move upwards through the meshing of the gear 311, the rotating rod 310 and the second toothed plate 312, at this time, the inclined edge of the first wedge 33 is separated from the attachment of the inclined edge of the second wedge 35, at this time, the two springs 38 are released and rebound, so that the third wedge 36 is pulled out of the side groove 4, so that the two fourth wedges 313 are quickly reset and collected in the lifting groove 5.

[0025] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A metal casting mold capable of accurately fixing a sand core, comprising a lower mold (1) and an upper mold (2), characterized in that: Fixed structures (3) are provided on both sides of the outer surface of the lower mold (1); The two fixed structures (3) include a mounting frame (31), a sliding column (32), a moving rod (34) and a fourth wedge (313), wherein the mounting frame (31) is fixed to the side of the lower mold (1), the sliding column (32) is fixed inside the mounting frame (31), the outer surface of the sliding column (32) is slidably mounted with a first wedge (33), one end of the moving rod (34) is provided with a second wedge (35), the oblique side of the second wedge (35) is in contact with the oblique side of the first wedge (33), and the other end of the moving rod (34) is provided with a third wedge (36), the oblique side of the third wedge (36) is in contact with the oblique side of the fourth wedge (313). The movable rod (34) is provided with side blocks (37) on both sides of the outer surface, and a spring (38) is provided on one side of the two side blocks (37), and one end of the two springs (38) is fixedly connected to the inner wall of the mounting frame (31). A first tooth plate (39) is provided on the top of the first wedge block (33), and second tooth plates (312) are provided on both sides of the outer surface of the upper mold (2). A rotating rod (310) is rotatably provided inside the mounting frame (31), and a gear (311) is fixedly provided on the outer surface of the rotating rod (310), and the outer surface of the gear (311) is meshed with the first tooth plate (39) and the second tooth plate (312).

2. A metal casting mold capable of accurately fixing a sand core according to claim 1, characterized in that: Side grooves (4) are provided on both sides of the outer surface of the lower mold (1), and the two side grooves (4) are slidably connected to the moving rod (34).

3. The metal casting mold capable of accurately fixing a sand core according to claim 1, characterized in that: Lifting grooves (5) are provided on both sides of the top of the lower mold (1), and the two lifting grooves (5) are slidably connected to the fourth wedge block (313).

4. The metal casting mold capable of accurately fixing a sand core according to claim 1, characterized in that: A molding groove (6) is provided inside the lower mold (1) and the upper mold (2), and a grouting groove (7) is provided on one side of the outer surface of the lower mold (1) and the upper mold (2).

5. The metal casting mold capable of accurately fixing a sand core according to claim 1, characterized in that: Two slide grooves (8) are provided on one side of the outer surface of the upper mold (2), and the two slide grooves (8) are slidably connected to the two mounting frames (31).

6. The metal casting mold capable of accurately fixing a sand core according to claim 1, characterized in that: A fixed plate (9) is installed on the top of the upper mold (2).

7. A metal casting mold capable of accurately fixing a sand core according to claim 6, characterized in that: A connecting assembly (10) is installed on the top of the fixed plate (9), and the connecting assembly (10) is used to connect to the hydraulic assembly.

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