CN212121579U

CN212121579U - Sand core mould for flywheel housing

Info

Publication number: CN212121579U
Application number: CN202020726219.0U
Authority: CN
Inventors: 陈行全; 王庆林
Original assignee: NINGBO QUANLI MACHINERY MOLD CO Ltd
Current assignee: NINGBO QUANLI MACHINERY MOLD CO Ltd
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2020-12-11
Anticipated expiration: 2030-05-06

Abstract

The utility model discloses a flywheel housing sand core mould, which comprises a lower template, wherein a cavity for molding a flywheel housing sand core is arranged on the lower template; a joint groove is formed in the cavity, and a plurality of lower exhaust holes penetrating through the lower template are formed in the joint groove; an insert is detachably arranged in the joint groove and comprises a joint base, the joint base is suitable for being tightly attached into the joint groove, a plurality of convex blocks are arranged on the joint base, gullies are formed among the convex blocks, the convex blocks are suitable for forming the depressions of the flywheel housing sand cores, and the gullies are suitable for forming the reinforcing ribs of the flywheel housing sand cores; the gullies are provided with a plurality of upper exhaust holes penetrating through the joint base, and the upper exhaust holes are communicated with the lower exhaust holes. The forming machine has the advantages of simple structure, small processing difficulty, high forming quality and low cost.

Description

Sand core mould for flywheel housing

Technical Field

The utility model relates to the technical field of mold, concretely relates to bell housing psammitolite mould.

Background

The sand core is a material for manufacturing a core in casting production and consists of casting sand, a molding sand binder and the like. As shown in fig. 1, the sand core (100) of the flywheel housing is provided with a plurality of reinforcing ribs (101) distributed on the inner side of the sand core, and deep recesses (102) are formed among part of the reinforcing ribs (101); due to the existence of the recess, the reinforcing ribs on the two sides of the recess cannot be filled in the pouring process, so that the product quality is influenced; and because the reinforcing ribs are numerous, bubbles are formed on the surface of the sand core due to unsmooth exhaust in the pouring process, so that pits and depressions are formed on the surface of the formed sand core, and the product quality is also influenced.

Therefore, how to improve the existing flywheel sand core mold to overcome the above disadvantages is a problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure, the processing degree of difficulty is little, and the shaping quality is high, and with low costs bell housing psammitolite mould.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a flywheel housing sand core mould comprises a lower template, wherein a cavity for molding a flywheel housing sand core is formed in the lower template; the method is characterized in that: a joint groove is formed in the cavity, and a plurality of lower exhaust holes penetrating through the lower template are formed in the joint groove; an insert is detachably arranged in the joint groove and comprises a joint base, the joint base is suitable for being tightly attached into the joint groove, a plurality of convex blocks are arranged on the joint base, gullies are formed among the convex blocks, the convex blocks are suitable for forming the depressions of the flywheel housing sand cores, and the gullies are suitable for forming the reinforcing ribs of the flywheel housing sand cores; the gullies are provided with a plurality of upper exhaust holes penetrating through the joint base, and the upper exhaust holes are communicated with the lower exhaust holes.

As an improvement, each of the gullies is further provided with an exhaust groove, and the exhaust groove is communicated with the upper exhaust hole.

Compared with the prior art, the utility model has the advantages of: the split arrangement of the insert is used for reasonably forming the reinforcing rib part where the sunken part of the sand core is located on one hand. On the other hand, in order to ensure the forming quality, the vent holes are inevitably selected; if the insert and the lower template are integrated, the processing cost is greatly increased, the exhaust holes are difficult to open, and the processing error of one exhaust hole can cause the whole die to be scrapped and to be unreliated; therefore, the split insert is arranged, the cost is saved, the processing difficulty is reduced, and the processing risk is controlled. In addition, the arrangement of the exhaust groove can further exhaust the gas, and the molding quality of the surface of the sand core is ensured.

Drawings

Fig. 1 is a schematic perspective view of a sand core of a flywheel housing according to a preferred embodiment of the present invention;

fig. 2 is a schematic structural diagram of the molding of the sand core of the flywheel housing according to a preferred embodiment of the invention.

Fig. 3 is a schematic perspective view of a preferred embodiment of the present invention;

fig. 4 is an exploded view of a preferred embodiment according to the present invention;

fig. 5 is a schematic perspective view of an insert according to a preferred embodiment of the present invention;

fig. 6 is a top view of an insert according to a preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.

As shown in fig. 2 to 6, the present invention is a preferred embodiment of the present invention, and includes a lower template 1, wherein the lower template 1 is provided with a cavity 11 for molding a sand core 100 of a flywheel housing; a joint groove 12 is formed in the cavity 11, and a plurality of lower vent holes 121 penetrating through the lower template 1 are formed in the joint groove 12; the insert 2 is detachably arranged in the joint groove 12, the insert 2 comprises a joint base 21, the joint base 21 is suitable for being tightly attached into the joint groove 12, a plurality of protrusions 22 are arranged on the joint base 21, gullies 23 are formed among the protrusions 22, the protrusions 22 are suitable for forming the depressions 102 of the flywheel housing sand cores 100, and the gullies 23 are suitable for forming the reinforcing ribs 101 of the flywheel housing sand cores 100; the gullies 23 are formed with a plurality of upper vents 24 extending through the base 21, and the upper vents 24 are connected to the lower vents 121.

Each of the corrugations 23 is further formed with an exhaust groove 241, and the exhaust groove 241 is connected to the upper exhaust hole 24.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A flywheel housing sand core mould comprises a lower template, wherein a cavity for molding a flywheel housing sand core is formed in the lower template; the method is characterized in that: a joint groove is formed in the cavity, and a plurality of lower exhaust holes penetrating through the lower template are formed in the joint groove; an insert is detachably arranged in the joint groove and comprises a joint base, the joint base is suitable for being tightly attached into the joint groove, a plurality of convex blocks are arranged on the joint base, gullies are formed among the convex blocks, the convex blocks are suitable for forming the depressions of the flywheel housing sand cores, and the gullies are suitable for forming the reinforcing ribs of the flywheel housing sand cores; the gullies are provided with a plurality of upper exhaust holes penetrating through the joint base, and the upper exhaust holes are communicated with the lower exhaust holes.

2. The flywheel housing sand core mold of claim 1, wherein: each gully is also provided with an exhaust groove which is communicated with the upper exhaust hole.