CN210547834U - Combined die - Google Patents

Abstract

The utility model provides an assembled die, includes along with type mould and support mould, includes main part, strengthening layer, working face and equipment face along with the type mould, and the main part is suppressed or is printed by particulate material and form, and the main part surface sets up the strengthening layer, perhaps strengthening layer infiltration main part surface, and the main part is the working face with the one side of sand mould die cavity contact, and relative another side is the equipment face, supports the mould and installs in main part equipment face one side, and shape and equipment face shape phase-match. The particle material which is convenient to form is printed or pressed into a random mold, the advantage of the particle material which is convenient to form is utilized, the defect that the hardness of the particle material is not enough is overcome by the aid of the reinforced layer with high tensile strength and hardness, the problem of integral tensile strength and hardness is solved by taking the supporting mold as a filling material, the integral quality can be light, the defects are overcome by the aid of the method, and the combined mold integrates the advantages.

Description

Combined die

Technical Field

The utility model relates to a casting mould technical field especially relates to a combined die.

Background

The bottleneck of new products in the casting industry is mold development, the development speed and the development speed of the mold determine the development cycle length of the new products, the existing mold has various advantages and disadvantages, the traditional wood mold is low in cost and can be repeatedly used, but the development cycle is long, especially complex castings are difficult to manufacture, and the repeatability is poor; the traditional lost foam has low cost, needs mechanical processing and manufacturing, but cannot be used repeatedly; the traditional metal mold has long manufacturing period and can be repeatedly used, but is not suitable for large pieces and has high cost; emerging FDM mould, SLA mould are all printing the shaping, and excellent in use effect is but the cost is too high.

Therefore, the development cycle of the die is shortened, the manufacturing cost of the die is reduced, the die can be repeatedly used, and the die which can adapt to various complex structural designs is the most needed die in the industry.

Disclosure of Invention

The not enough to prior art, the utility model provides a combined die, the utility model discloses an aspect solved technical problem be mould development cycle long, with high costs, can not use repeatedly, complicated foundry goods mould is not good to be processed.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides an assembled die, includes along with type mould and support mould, includes main part, strengthening layer, working face and equipment face along with the type mould, and the main part is suppressed or is printed by particulate material and form, and the main part surface sets up the strengthening layer, perhaps strengthening layer infiltration main part surface, and the main part is the working face with the one side of sand mould die cavity contact, and relative another side is the equipment face, supports the mould and installs in main part equipment face one side, and shape and equipment face shape phase-match.

The particle material which is convenient to form is printed or pressed into a random mold, the advantage of the particle material which is convenient to form is utilized, the defect that the hardness of the particle material is not enough is overcome by the aid of the reinforced layer with high tensile strength and hardness, the problem of integral tensile strength and hardness is solved by taking the supporting mold as a filling material, the integral quality can be light, the defects are overcome by the aid of the method, and the combined mold integrates the advantages.

Preferably, the main body is made of a particle material of 5-2000 meshes, and can be at least one of silica sand, fused quartz, fused corundum particles, mullite particles, sillimanite particles, kaolinite clinker, refractory clay, zircon sand, rutile particles, spinel particles, magnesium oxide, calcium oxide, ceramsite sand, complex ore sand, silicon carbide powder, silicon nitride powder, aluminum oxide powder and starch.

The particle materials are used because the particle materials are easy to form, the particle materials can be formed and can meet different requirements, the most common silicon sand is used at present, and the silicon sand can be recycled, so that the particle materials are particularly suitable for industrial production, but the manufacturing requirements of special industries or fine industries are different, and the proper materials are required to be selected as the particle materials of the random-type mould main body.

Preferably, the strengthening layer is attached to the main body when in a liquid state, and is in a solid state after being solidified, the hardness of the main body attached with the strengthening layer is not lower than 85HD, and the tensile strength is not lower than 15 MPa.

The strengthening layer is attached to the main body when in liquid state, can permeate into the main body made of particle materials, is integrated with the main body after being solidified into solid state in later stage, and can be attached to the main body, cannot be separated from the main body or is easy to peel off from the main body, otherwise, the strengthening function cannot be realized, so that the main body with the strengthening layer has the hardness and tensile strength which are required as a mold, and the main body is molded under certain pressure.

Preferably, the strengthening layer is made of furan resin, polyurea resin, modified polyurea resin, polyurethane resin, phenolic resin, urea-formaldehyde resin, melamine-formaldehyde resin, epoxy resin, polyurethane modified silicone resin, xanthan gum, polyvinyl acetate emulsion, polyacrylamide, ethyl silicate, silica sol, sulfate, rosin, syrup, sesbania gum, coal tar, asphalt, polyvinyl acetal, ethylene-vinyl acetate copolymer, phenolic-butyronitrile gum, phenolic-chlorobutadiene gum, phenolic-polyurethane gum, epoxy-butyronitrile gum, unsaturated polyester, acrylic resin, polyimide, polybenzimidazole, phenolic-polyvinyl acetal, phenolic-polyamide, epoxy-polyamide, vinyl polymer, polyvinyl acetate, polyvinyl alcohol, perchloroethylene, polyisobutylene, Polyester, polyether, polyamide, polyacrylate, a-cyanoacrylate, epoxy-polysulfide glue, organic silicon resin, furan resin, perchloroethylene, polyisobutylene, polyester, polyether, polyamide, polyacrylate, a-cyanoacrylate, polyvinyl acetal, epoxy resin AB glue, epoxy-polyamide AB glue and phenolic-epoxy resin AB glue.

Any one of the materials meets the requirement of the previous one, can be attached to a main body, and the cured hardness can meet the requirement.

Preferably, the strengthening layer penetrates into the surface of the body by at least 2 mm.

From the above, it can be seen that the reason for selecting the granular materials is that gaps exist among the granular materials, and the reinforcing layer can be infiltrated, so that the effect is achieved, whether the granular materials are too compact among the granules or the reinforcing layer cannot be infiltrated, the requirement cannot be met, so the infiltration depth is also the guarantee of the tensile strength and the hardness, theoretically, the deeper infiltration effect is better, and when the infiltration reaches 2 mm, the requirement on the aspects of the preliminary tensile strength and the hardness can be met, so the infiltration of the reinforcing layer is at least 2 mm.

Preferably, the main body comprises splicing bodies and connecting blocks, and the main body is formed by splicing at least two splicing bodies; the connecting block is simultaneously connected with at least two adjacent splicing bodies, and the at least two splicing bodies are relatively fixed; most preferably, the connecting block is butterfly or flower shaped.

The theme is decomposed into a plurality of splicing bodies, so that large molds can be conveniently made, when some large castings are made, the corresponding molds are huge, the splicing bodies are designed, the manufacturing volume is reduced, and meanwhile, later-stage assembly molding is realized, so that the molds can be conveniently transported and transported. The adjacent splicing bodies are connected through the connecting blocks, so that the adjacent splicing bodies are relatively fixed without relative displacement, and finally, a complete main body is obtained through assembly. Wherein the connecting block is generally horizontally disposed,

preferably, the splicing bodies further comprise clamping grooves, and the adjacent splicing bodies are respectively provided with convex or concave clamping grooves which are matched with each other, namely the adjacent splicing bodies are spliced and formed in the concave through the convex placement.

The connecting block generally all sets up horizontally, so vertical direction generally can choose for use to splice through outstanding or sunken connection between the body, restricts two movements of splicing body horizontal direction, will splice simultaneously and connect more firmly between the body.

Preferably, the main part still includes the strengthening rib, the main part is double-deck or the multilayer that the intermediate layer is the cavity, and is provided with the strengthening rib between the two-layer structure, the strengthening rib both ends are connected with two-layer structure respectively, double-deck or multilayer and strengthening rib integrated into one piece.

The main body printed by the granular material is increased in thickness when the hardness of the main body is increased, so that the quality of the whole die is increased, and the main body is inconvenient to carry and assemble. The reinforced layer can improve the integral hardness and tensile strength of the main body, so that the integral strength cannot be reduced by the double layer or the multiple layers, and the integral hardness is improved and the thickness of the main body is reduced due to the layer frame of the area of the reinforced layer.

Preferably, the supporting mold is made of at least one material of wood, metal, and resin.

The free-form die is hollow, so that the requirements on tensile strength and hardness are better, a material with certain tensile strength and hardness is selected to manufacture the supporting die, and a cavity on one side of the assembling surface of the free-form die is filled, so that the tensile strength and hardness of the whole die are improved.

Preferably, the supporting mold is hollow or grid-shaped.

Meanwhile, the supporting die needs to consider the quality problem, and the overweight flowers are inconvenient to turn over, carry and use, so that the weight needs to be reduced as much as possible under the condition of proper tensile strength and hardness, and the light supporting die is obtained.

Preferably, the outer contour of the supporting mold corresponds to the outer contour of a three-dimensional shape consisting of at least one cube and/or at least one cuboid.

This is that it is easy preparation to require to support the mould, can not rotate along with the type mould relatively simultaneously, and simple cube or cuboid all utilize rectangular form or platelike material just can obtain, need not reprocess into shapes such as arc circular, reduce the processing degree of difficulty that supports the mould, improve machining efficiency, just can obtain the support mould sooner better, can make the support mould of the same model in batches even, matches the type mould of going up different models, just can realize the effect of fast assembly.

Preferably, the assembly surface is in complete contact with the support mold, and the surface of the support mold in contact with the assembly surface is a flat plane.

The method prevents a gap or a cavity between the assembly surface and the supporting surface from causing weak points, realizes the complete contact of the assembly surface and the supporting surface by designing the shape of the assembly surface and covering a layer of plane plate on the outer side of the supporting die, improves the integral hardness and reduces the stress of unit area.

Preferably, the assembly surface comprises a mounting structure a, the support mold comprises a mounting structure B, the mounting structure a of the assembly surface protrudes or is recessed, the mounting structure B on the corresponding support mold is a corresponding recess or protrusion, and the assembly surface and the support mold are relatively fixed by being placed in the recess in a protruding manner.

The protruding card is used for relatively fixing the assembly surface and the supporting die in a sunken mode, so that the assembly surface and the supporting die are easy to manufacture and convenient to assemble on the one hand, the assembly area is increased on the other hand, the stability is improved, and the service life is prolonged. Preferably, an inward-concave trapezoid is designed on the assembling surface, an outward-protruding trapezoid is correspondingly designed on the outer side of the supporting die, and the trapezoid is small in top and large in bottom, so that after the assembling die is installed, the shape following die and the supporting die are limited to move relative to each other in the vertical direction, and the assembling die is more stable.

Preferably, the riveting die further comprises a riveting rod, wherein the riveting rod penetrates through the free-form die and the supporting die simultaneously, and the free-form die and the supporting die are fixed relatively.

Preferably, the riveting rod comprises a cap body at the upper end and a rod body at the lower part, the cross-sectional area of the cap body is larger than that of the rod body, and the cap body is arranged in the free-form die.

Utilize the riveting type pole fixed many simultaneously and along with type mould or support the mould, improve whole degree of closure of carving, make things convenient for the operation equipment moreover for whole steadiness improves.

Preferably, the main body further comprises a riveting hole, the main body is a double-layer or multi-layer structure with an interlayer as a cavity, the riveting hole is arranged in the double-layer or multi-layer cavity or the riveting hole penetrates through the main body, and the riveting rod is arranged in the riveting hole.

Utilize interbedded cavity to hold and rivet the type pole, the design of being convenient for when increasing the contact surface, more convenient equipment simultaneously does not stand out in the surface moreover, improves structural stability, more makes things convenient for the main part of relatively fixed difference layer.

Preferably, the riveting device further comprises a bottom plate, the free-form die and the supporting die are arranged on the bottom plate, the supporting die is fixed on the bottom plate, and the riveting rod penetrates through the free-form die, the supporting die and the bottom plate simultaneously.

For the mould design bottom plate make things convenient for the later stage molding work, convenient hoist and mount transportation moreover, it is fixed along with type mould, support mould and bottom plate three after having had the bottom plate moreover, and an organic whole type is better, convenient transportation and use moreover.

Preferably, the mould further comprises hanging handles, two protruding hanging handles are arranged on two sides of the free-form mould respectively, and the intersection points of all the hanging handles are overlapped with the center of gravity.

Preferably, still include the handling hole, the type following mould top surface is provided with the handling hole, and the handling hole has a circular cavity, and cavity upper portion sets up a long banding opening, and long banding open-ended length is unanimous with circular cavity diameter, and the hoist is the type of falling T, and the bottom is put into the cavity back from long banding opening, and the hoist rotates 90 to the card is in the cavity, thereby hangs the type following mould.

The lifting handle and the lifting hole which are designed at the back are used for conveniently transferring the combined die, and the corresponding combined die is huge when a large sand mold is manufactured, so that the combined die is convenient to transport, light in weight and convenient to use the lifting hole, and heavy in weight and convenient to use the lifting handle or cooperate with the bottom plate for transporting.

According to the above technical scheme, the utility model discloses an aspect beneficial effect who brings is, the preferred is to use silica sand preparation main part, through having increased the strengthening layer, the shortcoming that sand mould hardness itself is low has been overcome, make the sand mould satisfy the hardness requirement as the mould, and with low costs, the silica sand can be retrieved and regenerated, recycle, the sand mould design is printed or press forming's speed is all very fast, the cycle is short, simple structure can press forming fast, complicated structure can be through the printing of vibration damping printing mode one shot forming, the high convenient and fast that makes of precision, also utilize the easy having a bit of sand mould plasticity. On the other hand, wood, metal or resin is used as a supporting mold, the material with certain hardness and tensile strength is used for making hollow parts or grids, the supporting mold with light weight and certain hardness is obtained as a support, the advantages of the material in the hardness aspect are utilized, the grids and the hollow parts are made to reduce the weight, the novel mold with low mass, enough hardness and high appearance precision is finally obtained, and the novel mold has the advantages of short development period, low cost, repeated use, capability of being quickly processed and manufactured by a complex mold and the like.

Drawings

Fig. 1 is a schematic structural diagram of a combined mold with a splice body hidden according to an embodiment of the present disclosure.

Fig. 2 is a cross-sectional view of fig. 1.

Fig. 3 is a schematic structural diagram of a free-form mold of a combined mold according to an embodiment of the present disclosure.

Fig. 4 is a cross-sectional view of the structure shown in fig. 3.

Figure 5 is a cross-sectional view of another angle of the structure shown in figure 3.

Fig. 6 is a bottom view of the structure shown in fig. 3.

Fig. 7 is a schematic structural diagram of a supporting mold of a combined mold according to an embodiment of the present disclosure.

Fig. 8 is an elevation view of the structure shown in fig. 7.

Fig. 9 is a cross-sectional view of the structure shown in fig. 7.

Fig. 10 is a schematic structural view of a supporting mold of a combined mold according to an embodiment of the present disclosure.

Fig. 11 is a schematic structural diagram of a free-form mold of a combined mold according to an embodiment of the present disclosure.

Fig. 12 is a bottom view of the structure shown in fig. 11.

Figure 13 is a schematic view of a combination die assembly of the structures shown in figures 10 and 11 assembled together.

In the figure: the device comprises a free-form die 10, a main body 11, a splicing body 110, a connecting block 111, a clamping groove 112, a reinforcing rib 113, a riveting hole 114, a reinforcing layer 12, a working surface 13, an assembling surface 14, a mounting structure A140, a supporting die 20, a mounting structure B21, a riveting rod 30, a bottom plate 40, a hanging handle 50 and a hanging hole 60.

Detailed Description

The technical scheme of the embodiment of the utility model is explained in further detail by combining the attached drawings of the utility model.

The mould is very important in the casting industry, the existing moulds have advantages and disadvantages, the development of the mould is slow, and the most of the existing moulds are still traditional moulds because the number of the existing moulds is not large enough. With the development of the technology, the 3DP forming technology is one of the most widely used additive manufacturing technologies at present, and is mainly to lay powder materials layer by layer and then print and form the powder materials by spraying an adhesive, wherein the powder materials can be silica sand, ceramic powder, metal powder, sand grains and the like, and the sand molds are mainly printed by the sand grains at present. The additive manufacturing has the obvious advantage that the complex shape can be designed quickly by software, but the additive manufacturing has the fatal defect that the requirements of the hardness and the tensile strength of the mould cannot be met when the additive manufacturing is used as the mould. Therefore, the sand mold is printed in the additive manufacturing process, and no one considers that the product manufactured by the additive manufacturing process is used as a mold. The cost of the die is considered, and the cost is reduced, the quality is improved and the effect is increased. The printing cost of the 3DP sand mold is 0.6-0.7 times of that of the wood mold, and the 3DP sand mold can reduce the mold cost to a greater extent and improve the production efficiency.

In order to solve the problem that sand mould surface hardness and tensile strength are not enough, set up strengthening layer 12 on the sand mould surface, make surface hardness and tensile strength all improve at double, the requirement of mould has been satisfied, guarantee sufficient number of times of using repeatedly, the fashioned granular material of convenient to use prints or suppresses into the random type mould, utilize the advantage of the convenient shaping of this kind of granular material, compensate the shortcoming that granular material hardness is not enough with strengthening layer 12 that tensile strength and hardness are high, including supporting mold 20 as the filler material, solve the problem of whole tensile strength and hardness, can also make whole quality can be light simultaneously, so obtain and compensate the shortcoming each other, collect the composite mold that each advantage is as an organic whole.

Example 1:

an assembled mould comprises a free-form mould 10, a supporting mould 20 and a riveting rod 30, wherein the free-form mould 10 comprises a main body 11, a reinforcing layer 12, a working surface 13 and an assembling surface 14, the main body 11 is formed by pressing or printing granular materials, the reinforcing layer 12 is arranged on the surface of the main body 11, or the reinforcing layer 12 permeates into the surface of the main body 11, which is contacted with a sand mould cavity, is the working surface 13, the opposite surface is the assembling surface 14, the supporting mould 20 is arranged on one side of the assembling surface 14 of the main body 11, and is matched with the assembling surface 14 in shape, because the mould has an external structure for forming a casting, such as shown in figures 10-13, and has an internal cavity structure for forming the casting, such as shown in figures 1-9, so that different structures exist, but the working surface 13 of the free-form mould 10 is the surface contacted with the sand mould cavity, and the opposite surface, the assembly surface 14 is connected to a support die 20.

Referring to fig. 7 and 5, the assembly surface 14 includes a mounting structure a140, the support mold 20 includes a mounting structure B21, the mounting structure a140 of the assembly surface 14 is protruded or recessed, and the mounting structure B21 of the corresponding support mold 20 is correspondingly recessed or protruded, and the assembly surface 14 and the support mold 20 are relatively fixed by being protruded and placed in the recess.

Referring to fig. 1 and 2, a riveting rod 30 penetrates through the free-form mold 10 and the supporting mold 20 at the same time to fix the free-form mold 10 and the supporting mold 20 relatively, the riveting rod 30 includes a cap body at an upper end and a rod body at a lower end, the cross-sectional area of the cap body is larger than that of the rod body, and the cap body is disposed in the free-form mold.

The main body 11 is made of at least one of silica sand, fused quartz, fused corundum particles, mullite particles, sillimanite particles, kaolinite clinker, refractory clay, zircon sand, rutile particles, spinel particles, magnesium oxide, calcium oxide, ceramsite sand, complex ore sand, silicon carbide powder, silicon nitride powder, alumina powder and starch, the particle material is 5-2000 meshes, and the best particle material is 70-800 meshes.

The reinforcing layer 12 is attached to the main body 11 when in a liquid state, the main body 11 is granular, so that the reinforcing layer 12 is attached to the main body 11 by at least 2 mm or penetrates into the main body 11 by at least 2 mm conveniently, the reinforcing layer 12 is in a solid state after being solidified, the hardness of the main body 11 attached with the reinforcing layer 12 is not lower than 85HD, and the tensile strength is not lower than 15 MPa.

The strengthening layer 12 comprises at least one of epoxy resin AB glue, epoxy-polyamide AB glue, phenolic-epoxy resin AB glue, phenolic resin, urea-formaldehyde resin, melamine-formaldehyde resin, epoxy resin, organic silicon resin, furan resin, unsaturated polyester, acrylic resin, polyimide, polybenzimidazole, phenolic-polyvinyl acetal, phenolic-polyamide, epoxy-polyamide, vinyl polymer, polyester, polyether, polyamide, polyacrylate, a-cyanoacrylate, polyvinyl acetal, ethylene-vinyl acetate copolymer, phenolic-butyronitrile glue, phenolic-chloroprene glue, phenolic-polyurethane glue, epoxy-butyronitrile glue and epoxy-polysulfide glue.

Referring to fig. 7 to 9, the supporting mold 20 is made of at least one material selected from wood, metal, and resin, and has a hollow or grid shape. Thus, the weight can be reduced, and the supporting requirement can be met. The thickness of the raw material plate of the supporting die 20 is 80-120 mm, and the grid spacing of the supporting die 20 is 150-250 mm, so that the material consumption is reduced, and the structure is stable.

The assembling die integrally formed with the die 10 is suitable for dies with small sizes, a shell-shaped structure which meets die requirements and is matched with a cavity in shape is formed by matching the characteristic that a reinforced layer 12 is high in hardness and tensile strength due to the fact that particle materials are convenient to form, the hollow supporting die 20 is used for filling, the supporting die 20 is higher in hardness, and the supporting die is light in weight, so that the assembling die is obtained.

Example 2:

on the basis of embodiment 1, referring to fig. 3 to 6, the main body 11 further includes a reinforcing rib 113, the main body 11 is made into a double layer, the main body 11 is a double layer or a multilayer with a cavity as an interlayer, the reinforcing rib 113 is arranged between the two layers of structures, two ends of the reinforcing rib 113 are respectively connected with the two layers of structures, and the double layer or the multilayer and the reinforcing rib 113 are integrally formed. The wall thickness of each layer is 20-50 mm. The spacing between the reinforcing ribs 113 is 100-300 mm.

The main body 11 is made into double layers or multiple layers, and then adheres to or permeates the strengthening layer 12 on the surface to obtain the free-form mold 10, so that the quality of the main body 11 is reduced, and meanwhile, the area of the strengthening layer 12 is also increased, so that the integral hardness and tensile strength of the free-form mold 10 are improved, and the free-form mold 10 with lighter quality and higher strength and hardness is obtained.

Example 3:

on the basis of embodiment 1 or embodiment 2, the main body 11 includes a splicing body 110, a connecting block 111, and a clamping groove 112, and the main body 11 is formed by splicing at least two splicing bodies 110; the connecting block 111 is simultaneously connected with at least two adjacent splicing bodies 110, and relatively fixes the at least two splicing bodies 110. The adjacent splice bodies 110 are respectively provided with mutually matched convex or concave clamping grooves 112, that is, the adjacent splice bodies 110 are spliced and molded by placing the protrusions in the concave.

Referring to fig. 1 and 3, the connecting blocks 111 or the slots 112 are used to connect the adjacent splicing bodies 110 together, so that the splicing bodies 110 are integrated, the connecting blocks 111 in a general butterfly or flower shape are horizontally arranged, the splicing bodies 110 are connected, and the slots 112 protruding from and fitting into the slots are vertically connected to the splicing bodies 110, so that the splicing bodies 110 are limited from all directions, and the splicing bodies 110 are integrated.

Example 4:

on the basis of the embodiment 1-3, the riveting device further comprises a bottom plate 40, a lifting handle 50 and a lifting hole 60, wherein the free-form die 10 and the supporting die 20 are arranged on the bottom plate 40, the supporting die 20 is fixed on the bottom plate 40, and the riveting rod 30 penetrates through the free-form die 10, the supporting die 20 and the bottom plate 40 at the same time. The hanging handles 50 are respectively provided with two protruding hanging handles 50 at two sides of the free-form die, the hanging handles 50 protrude by about 50 mm, and the end faces are designed to be anti-skidding bosses. The intersection of all the carrying handles 50 coincides with the center of gravity. The lifting hole 60 is arranged on the top surface of the following type die 10, the lifting hole 60 is provided with a circular cavity, the upper part of the cavity is provided with a long strip-shaped opening, the length of the long strip-shaped opening is consistent with the diameter of the circular cavity, the lifting appliance is of an inverted T shape, and after the bottom end of the lifting appliance is placed into the cavity from the long strip-shaped opening, the lifting appliance rotates by 90 degrees so as to be clamped in the cavity, and the following type die 10 is lifted.

The designed bottom plate 40, the lifting handle 50 and the lifting hole 60 are used for conveniently transferring the combined mould, and the corresponding combined mould is huge when a large sand mould is manufactured, so that the combined mould is convenient to transport, the lifting hole 60 is used for light weight, and the lifting handle 50 or the lifting hole 60 is used for heavy weight for transporting by matching with the bottom plate 40.

Example 5:

the support mold 20 in any of the above embodiments is preferably designed such that the outer contour of the support mold 20 corresponds to the outer contour of the three-dimensional shape formed by at least one cube and/or at least one cuboid. Meanwhile, the assembling surface 14 is completely contacted with the supporting mold 20, and the surface of the supporting mold 20 contacted with the assembling surface 14 is a flat plane. Namely, the outermost skin of the upper grid or hollow support mold 20 is formed, and the thickness of the outermost plate is about 12 mm.

The optimally designed supporting mold 20 is formed by stacking simple cubes or cuboids, and can be expanded into simple three-dimensional shapes such as spheres, cylinders, cones and the like under special conditions, so that convenience is brought to manufacturing and assembling, the manufacturing difficulty is simplified, and the efficiency is improved. The face of the assembly face 14 in contact with the support die 20 is in full contact to prevent voids from causing increased stress, which could be weak points and damage when the follower die 10 is subjected to excessive pressure.

In the process of industrial production, a plurality of universal supporting molds 20 with different specifications can be spliced in batches, the supporting mold 20 with the same specification can be combined with the random molds 10 with different specifications, the working surface 13 of the random mold 10 is designed according to the shape of a sand mold cavity, the assembling surface 14 of the random mold 10 with the size within a certain range is of one specification and is consistent with the supporting mold 20 with the corresponding specification, so that the time can be saved, the rapid combination is realized, and the working efficiency is also improved. Even in the case where the supporting mold 20 is limited, the combination of the one supporting mold 20 and the plurality of slave molds 10 is rapidly and individually performed as needed. And when the conformal mold 10 or the supporting mold 20 is damaged, the other one is reserved, so that the utilization rate can be high.

In all the embodiments, the conformal mold is made of a particle material to form a main body, and then a reinforcing layer is applied, and the hardness and the tensile strength of the main body are tested, and the specific test results are as follows.

Even with silica sand particles, the subjects were obtained by 3D printing and comparative experiments were performed to compare the performance of the subjects without the reinforcing agent (before treatment) and the subjects with the reinforcing agent (after treatment) as described in this protocol, with the results shown below.

TABLE 1 comparison of Performance before and after treatment

As can be seen from Table 1, the tensile strength and hardness of the model after treatment are greatly improved, particularly the tensile strength is as high as 20MPa, which is almost dozens of times of that before the treatment; the hardness is up to 98 HD. The problem that the model is easy to break and damage in the using, moving, carrying or transporting process due to low hardness and hardness is well solved.

Therefore, the mold can be seen to be capable of completely achieving the required tensile strength and hardness and being capable of working as a mold.

The specific design process of any of the above embodiments is as follows:

the specific assembling die is designed as required, when the die is a large die, the shape of the main body 11 of the following die 10 is firstly determined, then the die is cut into a plurality of splicing bodies 110, then a double layer or a plurality of layers are designed, then the position of the reinforcing rib 113 is designed, the position of the connecting block 111 is designed, meanwhile, a recess matched with the connecting block 111 is arranged on the splicing body 110 corresponding to the nature, if the die is printed, the riveting hole 114 in the double-layer cavity is designed and printed together at the beginning, so the die is integrally formed, the position and the shape of the clamping groove 112 between the upper layer and the lower layer of the die are designed, and the outline of the supporting die 20 is designed simultaneously.

According to the outer contour of the supporting mold 20, the supporting mold 20 is designed, the space or the size of the grids or the hollows is designed, and finally the skin is contacted with the assembling surface 14 on one side to ensure that the skin is completely contacted with the assembling surface 14.

And finally, manufacturing according to the design, and then assembling and molding.

Use assembling die can be under the prerequisite of guaranteeing that casting die uses tensile strength, relapse the heavy duty utilization, and complicated shape also easily obtains, structure light in weight, and the mould is with low costs, easily operations such as on-the-spot transport or upset simultaneously. Meanwhile, the assembly surface 14 of the random mold 10 is shell-shaped, so that the utilization rate of the 3DP sand mold printing material is effectively improved, the printing time is reduced, the whole molding production period is shortened, and the industrial application of the combined mold is promoted.

Claims (15)

1. A combination mold, characterized in that: including following the type mould and supporting the mould, follow the type mould and include main part, strengthening layer, working face and equipment face, the main part is suppressed or is printed by particulate material and form, and the main part surface sets up the strengthening layer, perhaps strengthening layer infiltration main part surface, and the main part is the working face with the one side of sand mould die cavity contact, and relative another side is the equipment face, supports the mould and installs in main part equipment face one side, and shape and equipment face shape phase-match.

2. A combined mould as claimed in claim 1, in which: the main body is made of 5-2000-mesh particle materials.

3. A combined mould as claimed in claim 1, in which: the strengthening layer is attached to the main body when in a liquid state, the strengthening layer is in a solid state after being solidified, the hardness of the main body attached with the strengthening layer is not lower than 85HD, and the tensile strength is not lower than 15 MPa.

4. A combined mould according to claim 3, characterised in that: the strengthening layer penetrates into the surface of the body by at least 2 mm.

5. A combined mould as claimed in claim 1, in which: the main body comprises splicing bodies and connecting blocks, and the main body is formed by splicing at least two splicing bodies; the connecting block is simultaneously connected with at least two adjacent splicing bodies, and the at least two splicing bodies are relatively fixed.

6. A combined mould according to claim 5, characterised in that: the splicing bodies further comprise clamping grooves, and the adjacent splicing bodies are respectively provided with convex or concave clamping grooves which are matched with each other, namely the adjacent splicing bodies are spliced and formed in the concave through the convex placement.

7. A combined mould as claimed in claim 1, in which: the main part still includes the strengthening rib, the main part is double-deck or the multilayer that the intermediate layer is the cavity, and is provided with the strengthening rib between the two-layer structure, the strengthening rib both ends are connected with two-layer structure respectively, double-deck or multilayer and strengthening rib integrated into one piece.

8. A combined mould as claimed in claim 1, in which: the supporting mold is hollow or in a grid shape.

9. A combined mould according to claim 8, characterised in that: the outer contour of the supporting die is consistent with the outer contour of a three-dimensional shape consisting of at least one cube and/or at least one cuboid.

10. A combined mould according to claim 8, characterised in that: the assembling surface is in complete contact with the supporting die, and the surface of the supporting die in contact with the assembling surface is a flat plane.

11. A combined mould as claimed in claim 1, in which: the assembling surface comprises a mounting structure A, the supporting mold comprises a mounting structure B, the mounting structure A of the assembling surface protrudes out or is sunken, the mounting structure B on the corresponding supporting mold is correspondingly sunken or protrudes, and the assembling surface and the supporting mold are relatively fixed by being placed in the sunken part in a protruding mode.

12. A combined mould as claimed in claim 1, in which: the riveting device is characterized by further comprising a riveting rod, wherein the riveting rod penetrates through the free-form die and the supporting die at the same time, and the free-form die and the supporting die are relatively fixed.

13. A combination die as claimed in claim 12, wherein: the riveting rod comprises a cap body at the upper end and a rod body at the lower part, the cross-sectional area of the cap body is larger than that of the rod body, and the cap body is arranged in the free-form die.

14. A combination die as claimed in claim 12, wherein: the main part still including riveting the type hole, the main part is that the intermediate layer is the bilayer of cavity or multilayer, rivet the type hole setting and be in the cavity of bilayer or multilayer or rivet the type hole and run through the main part, rivet the type pole setting and be in rivet in the type hole.

15. A combination die as claimed in claim 12, wherein: the riveting die is characterized by further comprising a bottom plate, the free-form die and the supporting die are arranged on the bottom plate, the supporting die is fixed on the bottom plate, and the riveting rod penetrates through the free-form die, the supporting die and the bottom plate simultaneously.

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