CN212761999U - Original mould - Google Patents

Abstract

The utility model provides a former body mould. The original body mould comprises a base layer and a cladding layer, wherein the cladding layer is cladded on the base layer, and the surface of the cladding layer far away from the base layer forms part of the cavity surface of the original body mould. The utility model provides a former body mould utilizes the metallic material who accords with the surface quality requirement to clad on the lower base member layer of cost to form the cladding layer, thereby under the prerequisite of guaranteeing the surface quality of former body mould, reduce the cost of former body mould, the multilayer cladding can guarantee that the cladding layer has certain thickness, the cladding direction of adjacent cladding thin layer has the contained angle moreover, avoid leading to the temperature to concentrate in the intersection, the heat dissipation is inhomogeneous, thick crystal appears, defect problems such as local strength is relatively poor or local pit.

Description

Original mould

Technical Field

The utility model relates to the technical field of molds, especially a former body mould.

Background

In recent years, industries such as automobiles, household electrical appliances and communication are highly developed, and the scale and level of the injection molding industry and the mold industry are rapidly promoted. In the accurate injection mold structure, the inlaying die structural strength is relatively poor, needs to adopt former body plate front mould in a large number, guarantees the precision of injection molding, and the former blank of former body plate is bulky, need adopt high-quality rigid mould steel moreover, and purchasing cost processing cost is high, has increased the mould and has opened the system cost to when later stage maintenance, need whole replacement former body plate, cause the problem of wasting of resources and increase in cost.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems of high opening cost and high maintenance cost of the existing original body plate front mold, the original body mold for ensuring the surface quality by cladding the high-quality metal material on the metal material with lower cost in a multi-layer mode to form the cladding layer is provided.

A method for manufacturing a prototype mold comprises the following steps:

step S1, setting a first over-cut thickness and a metal material of the blank;

step S2, rough machining is conducted on the blank, and the rough machined blank is over-cut according to the first over-cutting thickness to form a base layer;

and step S3, cladding another metal material on the base layer in the step S2 to form a cladding layer, wherein the thickness of the cladding layer is equal to the first overcut thickness.

In step S3, the method further includes:

and performing multi-layer cladding on the substrate layer in the step S2, wherein each layer of cladding forms a cladding thin layer, all the cladding thin layers jointly form the cladding layer, and the cladding directions of the cladding thin layers of two adjacent layers form an included angle.

The angle range of the included angle is 50-85 degrees.

The cladding directions of the cladding thin layers of the adjacent three layers are different.

The size range of the powder spreading thickness of each layer of cladding is 0.05mm to 0.1mm, the range of the scanning speed is 850mm/s to 1250mm/s, the range of the laser power is 225W to 345W, and the size range of the scanning interval is 0.05mm to 0.15 mm.

In step S1, the first over-cut thickness ranges in size from 5mm to 10 mm.

In step S1, the metallic material of the base layer includes one of 45# steel, cast iron, P20 die steel, S136 die steel, and 738 die steel.

In step S3, the metal material of the cladding layer includes H13 die steel or Cr12MoV die steel.

In step S3, the hardness of the metal material of the base layer is less than the hardness of the metal material of the cladding layer.

An original body mould is prepared by the preparation method.

The original body mould comprises a base layer and a cladding layer, wherein the cladding layer is cladded on the base layer, and the surface of the cladding layer far away from the base layer forms part of the cavity surface of the original body mould.

The thickness range of the cladding layer is 5mm to 10 mm.

The utility model provides a former body mould utilizes the metallic material who accords with the surface quality requirement to clad on the lower base member layer of cost to form the cladding layer, thereby under the prerequisite of guaranteeing the surface quality of former body mould, reduce the cost of former body mould, the multilayer cladding can guarantee that the cladding layer has certain thickness, guarantee that the cladding layer satisfies the intensity of moulding plastics, and adjacent cladding direction that melts the thin layer has the contained angle, avoid leading to the temperature to concentrate in intersection, the heat dissipation is inhomogeneous, thick crystal appears, the relatively poor or local pit defect problem of local strength.

Drawings

Fig. 1 is a sectional view of a prototype mold according to an embodiment of the present invention;

fig. 2 is a schematic view of a cladding direction of a cladding layer of an embodiment of a prototype mold provided by the present invention;

in the figure:

1. a substrate layer; 2. a cladding layer; 3. and cladding the thin layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

A method for manufacturing a prototype mold comprises the following steps:

step S1, setting a first over-cut thickness and a metal material of the blank, wherein the metal material of the blank is a low-cost metal material, so that the problem that a large amount of hard die steel is needed to be used for manufacturing the blank in the prior art is solved, the cost is effectively reduced, and the first over-cut thickness is set according to the material selected for the blank;

step S2, rough machining is carried out on the blank according to the size of the product, and the rough machined blank is over-cut according to the first over-cut thickness to form a base layer 1, namely the size of the base layer 1 is smaller than the size of the product by the first over-cut thickness;

step S3, another metal material is clad on the base layer 1 in step S2 to form a cladding layer 2, and the thickness of the cladding layer 2 is equal to the first overcut thickness, that is, overcut is performed in step S2, so as to leave enough powder laying and cladding space for the hard die steel, thereby ensuring that the cladding layer 2 has enough thickness to meet the surface quality of the original die.

The melting point temperature of the metal material of the substrate layer 1 is similar to that of the metal material of the cladding layer 2, so that the problems of slag inclusion and the like caused by the oxidation phenomenon of the metal material of the substrate layer 1 when the plated material melts due to the high melting point of the metal material (inorganic non-metal material or other refractory metals) of the cladding layer 2 can be solved, and the peeling phenomenon of the coating caused by the insufficient strength of the bonding surface of the cladding layer 2 and the substrate layer 1 can be avoided.

After step S3, the method further includes performing subsequent finishing and polishing treatment on the cladding layer 2 of the original mold to obtain the best surface quality.

Because the working environment of the original body die is rapid cooling and rapid heating or long-term normal temperature and high pressure work, the thermal expansion coefficients of metal materials (particularly steel materials) are similar, and the problem that the original body die is scrapped due to cracks caused by rapid cooling and rapid heating can be solved.

In step S3, the method further includes:

carry out the multilayer cladding on base member layer 1 in step S2, each layer cladding forms one deck and melts and covers thin layer 3, and all it constitutes together to melt and cover thin layer 3 melt and cover layer 2, guarantee that the cladding layer 2 that has first overcut thickness can be good fix an organic whole with base member layer 1 to adjacent two-layer melt and cover the cladding direction of thin layer 3 and have the contained angle, avoid resulting in the temperature to concentrate in the junction, the heat dissipation is inhomogeneous, appear thick crystal, local strength is relatively poor or defect problems such as local pit.

The angle range of contained angle is 50 to 85 for in adjacent two-layer cladding thin layer 3, be in the cladding process of the cladding thin layer 3 of upper strata, be in the cladding thin layer 3 of lower floor and have abundant time to dispel the heat, thereby avoid local high temperature the problem of thick crystal to appear.

As shown in fig. 2, the cladding directions of the cladding thin layers 3 of the adjacent three layers are different, that is, in the cladding thin layers 3 of the adjacent three layers, the cladding thin layer 3(n layer) at the lowermost layer is clad along the horizontal direction, the cladding direction of the cladding thin layer 3(n +1 layer) at the middle layer is clad along the clockwise rotation by taking the horizontal direction as the reference, and the cladding direction of the cladding thin layer 3(n +2 layer) at the uppermost layer is clad along the counterclockwise rotation by taking the horizontal direction as the reference.

The size range of the powder spreading thickness of each layer of cladding is 0.05mm to 0.1mm, the range of the scanning speed is 850mm/s to 1250mm/s, the range of the laser power is 225W to 345W, the size range of the scanning interval is 0.05mm to 0.15mm, and specific parameters are set according to the metal material of the substrate layer 1 and the metal material of the cladding layer 2.

In step S1, the first overcut thickness is in a range of 5mm to 10mm, that is, the position where the cladding can be performed is ensured to clad the thin cladding layer 3, so as to ensure the quality of the cladding layer 2.

In step S1, the metal material of the base layer 1 includes one of 45# steel, cast iron, P20 die steel, S136 die steel and 738 die steel.

In step S3, the metal material of the cladding layer 2 includes H13 die steel or Cr12MoV die steel.

In step S3, the hardness of the metal material of the base layer 1 is less than the hardness of the metal material of the cladding layer 2.

A prototype mold, as shown in fig. 1, is prepared by the above-mentioned manufacturing method.

The original body mould comprises a base layer 1 and a cladding layer 2, wherein the cladding layer 2 is cladded on the base layer 1, the surface of the cladding layer 2 far away from the base layer 1 forms part of the surface of a cavity of the original body mould, namely the surface quality of the cavity of the original body mould is met by the cladding layer 2, and the base layer 1 is used for forming most of the shape structure of the original body mould.

The thickness range of the cladding layer 2 is 5mm to 10mm, so that the cladding layer 2 can be formed by multilayer cladding, and the quality of the cladding layer 2 is ensured.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (5)

1. A former body mould which characterized in that: including base member layer (1) and cladding layer (2), cladding layer (2) cladding in on base member layer (1), just cladding layer (2) are kept away from the surface of base member layer (1) constitutes the partial cavity surface of former body mould.

2. The proto-die of claim 1, wherein: the thickness range of the cladding layer (2) is 5mm to 10 mm.

3. The proto-die of claim 1, wherein: the hardness of the metal material of the substrate layer (1) is less than that of the metal material of the cladding layer (2).

4. The proto-die of claim 1, wherein: the metal material of the substrate layer (1) comprises one of 45# steel, cast iron, P20 die steel, S136 die steel and 738 die steel.

5. The proto-die of claim 1, wherein: the metal material of the cladding layer (2) comprises H13 die steel or Cr12MoV die steel.

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