CN215902699U

CN215902699U - Mold fixing device for centrifugal casting mold

Info

Publication number: CN215902699U
Application number: CN202122194382.4U
Authority: CN
Inventors: 唐永福; 胡俊; 李勇
Original assignee: Anqing TP Goetze Liner Co Ltd
Current assignee: Anqing TP Goetze Liner Co Ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-02-25
Anticipated expiration: 2031-09-09

Abstract

The utility model provides a die fixing device for a centrifugal casting die, which comprises a fixed end of a hollow rotary structure with a fixed axial position, wherein the fixed end can rotate around a rotary axis; the jacking end which is coaxially arranged with the fixed end and is of a rotary structure can move along the rotary axis and rotate around the rotary axis, and a second truncated cone inner inclined surface which is tightly matched with a second truncated cone outer inclined surface at one end of the centrifugal casting mold is arranged on the end surface at one side of the jacking end; the first truncated cone inner inclined plane and the second truncated cone inner inclined plane are oppositely arranged; and the telescopic part of the jacking component is coaxially connected with the jacking end and can drive the jacking end to move along the axis direction. The utility model has the advantages of convenient assembly and disassembly of the die, simple structure and light weight.

Description

Mold fixing device for centrifugal casting mold

Technical Field

The utility model relates to the field of pouring equipment, in particular to a mold fixing device for a centrifugal pouring mold.

Background

In the production and manufacturing process of automobile parts, the blank forming of thin-wall annular parts such as engine cylinder sleeves, piston rings and the like usually adopts a centrifugal casting forming process, and the subsequent processing process of the process has the advantages of small material removal amount, high material utilization rate, simple process and good mechanical properties of formed parts.

The utility model patent with publication number CN103071775A named as steel centrifugal casting mold discloses a steel centrifugal casting mold. The casting mold comprises a steel centrifugal casting mold flange, a positioning disk and a steel centrifugal casting mold body, wherein one end of the steel centrifugal casting mold body, which is filled with the positioning disk, is connected with the steel centrifugal casting mold flange through a group of connecting bolts, and the inner surface of the other end of the steel centrifugal casting mold body is arranged into an inner conical surface and a cylindrical surface from inside to outside. The centrifugal casting mould is fixed through the bolt connection between the flange arranged at the end part and the fixing device, the extra flange part of the centrifugal casting mould increases the whole weight, and the fixing mode of threaded connection is complex and time-consuming.

SUMMERY OF THE UTILITY MODEL

The utility model provides a mold fixing device for a centrifugal casting mold, which aims to solve the problems of complex installation process and heavy overall weight in the prior art.

The technical scheme of the utility model is as follows:

a mold fixture for a centrifugal casting mold, comprising:

the fixed end is a hollow rotary structure with a fixed axial position and can rotate around a rotary axis, and a first truncated cone inner inclined surface which is tightly matched with a first truncated cone outer inclined surface at one end of the centrifugal casting die is arranged on one side end surface of the fixed end;

the jacking end is of a rotary structure, is coaxially arranged with the fixed end, can move along a rotary axis and rotate around the rotary axis, and is provided with a second truncated cone inner inclined surface which is tightly matched with a second truncated cone outer inclined surface at one end of the centrifugal casting mold on one side end surface; the first truncated cone inner inclined plane and the second truncated cone inner inclined plane are oppositely arranged; and

and the telescopic part of the jacking component is coaxially connected with the jacking end and can drive the jacking end to move along the axis direction.

In order to ensure reliable fixing of the centrifugal casting mold and simplify the design, the taper of the first truncated cone inner inclined surface and the taper of the second truncated cone inner inclined surface are both 1: 1.

preferably, the jacking component is a hydraulic cylinder coaxially fixed with the jacking end, the telescopic component is a piston rod of the hydraulic cylinder, and the piston rod and the jacking end can rotate relatively around the axis.

The utility model replaces flange surface fixation with the conical surface guide mechanism, and replaces bolt connection fixation with the hydraulic jacking device, and has the advantages of convenient assembly and disassembly, simple structure and light weight.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a corresponding centrifugal casting mold of the present invention;

fig. 3 is a schematic structural view of the centrifugal casting mold of the present invention after being combined with a corresponding centrifugal casting mold.

Detailed Description

The present invention will be described in detail with reference to the drawings and specific embodiments, wherein prior to describing embodiments of the present invention in detail, the terms and terminology used herein are used to explain the same or similar structures and components with the same names or same reference numbers for illustrative purposes only.

The fixing device for the centrifugal casting mold shown in fig. 1 comprises a fixed end 1, a jacking end 2 and a jacking assembly 3, wherein the fixed end 1, the jacking end 2 and the jacking assembly 3 are coaxially arranged, and the fixed end 1 is fixed on an axis 11 through a bearing 13 and can rotate around the axis 11; the jacking end 2 is connected with a shaft sleeve 23 in a sliding mode through a motion transmission mechanism consisting of a flat key and a key groove, the shaft sleeve is fixed through a bearing 24, the shaft sleeve 23 can drive the jacking end 2 to rotate around an axis 11 through the flat key under the driving of external power equipment, the jacking assembly 3 is a hydraulic device fixed on the axis, and a piston rod 31 of the hydraulic device is connected with the jacking end 2 and can rotate relative to the axis 11 with the jacking end 2, so that the jacking end 2 is driven to move along the axis 11.

The side face of the fixed end 1 opposite to the top pressure end 2 is provided with a truncated cone inner inclined plane, wherein the side face of the fixed end is provided with a first truncated cone inner inclined plane 12, and the side face of the top pressure end is provided with a second truncated cone inner inclined plane 22. One end of a centrifugal casting mold 9 matched with the mold fixing device is provided with a first truncated cone outer inclined surface 91 which can be tightly matched with the first truncated cone inner inclined surface 12, and the other end of the centrifugal casting mold is provided with a second truncated cone outer inclined surface 92 which can be tightly matched with the second truncated cone inner inclined surface 22.

When the centrifugal casting mold 9 is installed, the end of the centrifugal casting mold provided with the first truncated cone outer inclined surface 91 faces the fixed end 1 and is arranged between the fixed end 1 and the jacking end 2, the hydraulic device 3 is operated, the piston rod 31 of the hydraulic device pushes the jacking end 2 to clamp the centrifugal casting mold 9 between the fixed end 1 and the jacking end 2, the conical frustum inclined planes which can be tightly matched are arranged at the two ends of the centrifugal casting mould 9 in the clamping process, so that the centrifugal casting mould can automatically center, the complex centering operation is omitted, after the piston rod 31 moves in place, the centrifugal casting mold 9 is accurately and reliably clamped between the fixed end 1 and the jacking end 2, the first truncated cone inner inclined surface 12 is tightly attached to the first truncated cone outer inclined surface 91, the second truncated cone inner inclined surface 22 is closely attached to the second truncated cone outer inclined surface 92.

In the centrifugal casting process, the hydraulic device 3 keeps providing axial pressure in a clamping state, so that two end faces of the centrifugal casting mold 9 do not slide relative to the pressing end 2 or the fixed end 1 when rotating at a high speed. Molten metal is injected through the hollow part of the fixed end 1, the shaft sleeve 23 is driven by external power equipment to drive the jacking end 2 to rotate around the axis 11 through the matching of the arranged flat key and the key groove, the centrifugal casting mold 9 and the fixed end 1 keep rotating synchronously with the jacking end 2 under the action of the static friction force of the end surface, and therefore the molten metal is formed into a revolving body with a certain thickness in the cavity of the centrifugal casting mold 9.

When the centrifugal casting mold 9 is disassembled, the hydraulic device 3 is controlled to enable the piston rod 31 to drive the jacking end 2 to move along the axis 11, and the centrifugal casting mold is loosened.

In the utility model, the first function of the jacking assembly 3 is to control the movement of the jacking end 2 along the direction of the axis 11, so that the jacking end 2 and the fixed end 1 are matched to clamp or loosen the centrifugal casting mold 9, and the second function of the jacking assembly 3 is to keep providing axial pressure in a clamping state so that the conical frustum matching surfaces at two ends of the centrifugal casting mold 9 cannot slide relatively during centrifugal work.

The pressing component may be a hydraulic device as mentioned in this embodiment, and may also be a linear motion device driven by electric power or air power, such as a telescopic cylinder, a linear electric cylinder, and the like.

As a preferable aspect of the size of the truncated cone inclined surface, in the present invention, the first truncated cone inner inclined surface and the second truncated cone inner inclined surface have the same size, and the taper is 1: 1, height 15mm, bottom diameter 205 mm.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A mold fixture for a centrifugal casting mold, comprising:

the fixed end (1) is of a hollow rotary structure with a fixed axial position, can rotate around a rotary axis (11), and is provided with a first truncated cone inner inclined surface (12) which is tightly matched with a first truncated cone outer inclined surface (91) at one end of the centrifugal casting mold (9) on one side end surface of the fixed end (1);

the jacking end (2) is of a rotary structure, is coaxially arranged with the fixed end (1), can move along a rotary axis (11) and rotate around the rotary axis, and is provided with a second conical frustum inner inclined surface (22) which is tightly matched with a second conical frustum outer inclined surface (92) at one end of the centrifugal casting die (9) on one side end surface of the jacking end (2); the first truncated cone inner inclined plane (12) and the second truncated cone inner inclined plane (22) are oppositely arranged; and

the jacking component (3) is coaxially connected with the jacking end (2) through a telescopic part (31) of the jacking component, and can drive the jacking end (2) to move along the axis direction.

2. The mold fixture according to claim 1, wherein the taper of the first truncated cone inner chamfer (12) and the taper of the second truncated cone inner chamfer (22) are both 1: 1.

3. the mold fixture according to claim 1, wherein the pressing member (3) is a hydraulic cylinder coaxially fixed to the pressing end (2), and the telescopic member (31) is a piston rod of the hydraulic cylinder, the piston rod and the pressing end (2) being relatively rotatable about the axis (11).