CN217803526U - Wet-type cold isostatic pressing mould for special-shaped through hole parts - Google Patents
Wet-type cold isostatic pressing mould for special-shaped through hole parts Download PDFInfo
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- CN217803526U CN217803526U CN202222042427.0U CN202222042427U CN217803526U CN 217803526 U CN217803526 U CN 217803526U CN 202222042427 U CN202222042427 U CN 202222042427U CN 217803526 U CN217803526 U CN 217803526U
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Abstract
The utility model belongs to the technical field of powder press forming die, concretely relates to dysmorphism through-hole part wet-type cold isostatic pressing mould. The utility model discloses constitute by upper cover plate, lower apron, special-shaped core, gum cover and several parts of pull rod. The upper end cover and the lower end are in clearance fit but not in interference fit, and spring gaskets are arranged between the nut and the upper surface of the upper cover plate and between the nut and the lower surface of the lower cover plate; when the special-shaped mold core is wrapped by the powder, the special-shaped mold core has certain displacement in the horizontal direction along with the change of hydraulic pressure due to the clearance fit arrangement; the arrangement of the spring gasket enables the whole body consisting of the upper cover plate, the lower cover plate, the special-shaped mold core and the rubber sleeve to have certain displacement in the longitudinal direction during powder hydraulic forming. The horizontal and longitudinal micro displacement can offset the disadvantages brought by a rigid structure, powder flowing is promoted, the edge of the special-shaped mold core is filled more compactly, and the edge of a product subjected to hydraulic forming cannot be cracked.
Description
Technical Field
The utility model belongs to the technical field of powder compression moulding mould, concretely relates to dysmorphism through-hole part wet-type cold isostatic pressing mould.
Background
The wet cold isostatic pressing is to encapsulate the granulated powder inside elastic plastic or rubber sleeve, to be set inside one steel cylinder capable of bearing high pressure tension, to pump the pressure transferring liquid into the cylinder with high pressure pump, and to bear the same pressure in different directions to form the required product blank.
In the conventional scheme, the general wet cold isostatic pressing can only manufacture a solid or round hole-shaped blank, and the dies used for processing the round hole-shaped blank are generally as follows: the middle part of the die is provided with a cylindrical steel core, the upper end and the lower end of the steel core are respectively inserted into the middle of the rubber plug and are hermetically connected with the rubber plug, the outer side surface of the rubber plug is provided with a rubber sleeve, the upper part of the rubber sleeve is hermetically connected with the outer side surface of the upper end rubber plug, the lower part of the rubber sleeve is hermetically connected with the outer side surface of the lower end rubber plug, and the inner side surface of the rubber sleeve, the outer side surface of the steel core, the lower surface of the upper end rubber plug and the upper end surface of the lower end rubber plug form a powder containing cavity. If the steel core is directly arranged into the special-shaped mould, other structures are unchanged, and the sharp angle of the special-shaped hole after the mould is formed can crack, the reason is that the powder cannot be well filled at the sharp angle of the special-shaped steel core after the powder is filled into the powder containing cavity because the powder has poor flowability. Such problems always plague those skilled in the art, and in the actual production process, those skilled in the art often make the solid blank by forming first and then machine-forming the irregular hole again. The processing mode has the problems of various working procedures, long process flow, large fluctuation of product quality level and the like; compared with the one-step molding of special-shaped holes, the variable cost such as material consumption, machining tools, tooling and working hour cost is greatly increased, and the mass production of products is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the wet-type cold isostatic pressing forming die for the special-shaped through hole part is simple in structure and capable of forming the special-shaped through hole at one time.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a wet-type cold isostatic compaction die for special-shaped through-hole parts, which comprises an upper cover plate, a lower cover plate, a special-shaped mold core, a rubber sleeve and a pull rod; the special-shaped mold core comprises a mold core body, an upper positioning bulge and a lower positioning bulge, wherein the upper positioning bulge is arranged on the upper end surface of the mold core body, and the lower positioning bulge is arranged on the lower end surface of the mold core body; a lower cover plate positioning groove matched with the lower positioning bulge is formed in the upper surface of the lower cover plate, the lower positioning bulge is located in the lower cover plate positioning groove and is in clearance fit with the lower cover plate positioning groove, and the lower end surface of the mold core body is attached to the upper surface of the lower cover plate; an upper cover plate positioning groove matched with the upper positioning bulge is formed in the lower end face of the upper cover plate, the upper positioning bulge is located in the upper cover plate positioning groove and is in clearance fit with the upper cover plate positioning groove, and the upper end face of the mold core body is attached to the lower end face of the lower cover plate; the rubber sleeve is arranged between the upper cover plate and the lower cover plate, the outer side wall of the lower part of the upper cover plate is hermetically connected with the inner side wall of the upper part of the rubber sleeve, and the outer side wall of the upper part of the lower cover plate is hermetically connected with the rubber sleeve; a powder containing cavity is formed on the inner surface of the rubber sleeve, the side surface of the mold core body, the lower end surface of the upper cover plate and the upper end surface of the lower cover plate; pull rod avoiding through holes matched with the pull rods are symmetrically formed in the upper edge of the upper cover plate and the lower edge of the lower cover plate, external threads are formed in the two ends of each pull rod, the pull rods penetrate through the pull rod avoiding through holes, the upper ends of the pull rods extend out of the upper end surface of the upper cover plate, the lower ends of the pull rods extend out of the lower end surface of the lower cover plate, nuts matched with the external threads are arranged at the upper end and the lower end of each pull rod, and the upper cover plate and the lower cover plate are fastened through the nuts in a threaded fit mode; between nut and the upper cover plate upper surface, all be provided with spring shim between nut and the apron lower surface down.
Further, the method comprises the following steps: a feeding through hole is formed in the upper surface of the upper cover plate and communicated with the powder containing cavity; a sealing rubber plug matched with the feeding through hole is arranged in the feeding through hole.
Further, the method comprises the following steps: the upper part of the sealing rubber plug is provided with a handle.
Further, the method comprises the following steps: the thickness of the sealed joint of the upper part of the rubber sleeve and the outer side wall of the lower part of the upper cover plate and the sealed joint of the lower part of the rubber sleeve and the outer side wall of the upper part of the lower cover plate are both larger than the thickness of the middle part of the rubber sleeve; the upper part and the lower part of the rubber sleeve are in smooth transition with the middle part of the rubber sleeve.
Further, the method comprises the following steps: the upper positioning bulge and the lower positioning bulge are both cylindrical, and the lower cover plate positioning groove and the upper cover plate positioning groove are circular grooves.
Further, the method comprises the following steps: the upper surface of the upper cover plate is provided with a lifting lug.
Further, the method comprises the following steps: and polishing the outer side wall of the mold core body.
The utility model has the advantages that:
1. the utility model discloses by upper cover plate, lower apron, special-shaped core, gum cover and several parts of pull rod are constituteed, wherein terminal surface and apron up end form the powder and hold the chamber under gum cover internal surface, core body side, the upper cover plate, when the product that needs preparation have special-shaped through-hole, put into the powder with the powder and hold the chamber, put into the steel cylinder with whole mould again hydraulic forming can. The utility model discloses special-shaped core should be clearance fit and non-interference fit with upper end cover and lower extreme, all is provided with spring shim between nut and the upper cover plate upper surface, between nut and the lower apron lower surface. When the special-shaped core is wrapped by powder, the special-shaped core has certain displacement in the horizontal direction along with the change of hydraulic pressure due to the clearance fit arrangement; the arrangement of the spring gasket enables the whole body consisting of the upper cover plate, the lower cover plate, the special-shaped mold core and the rubber sleeve to have certain displacement in the longitudinal direction during powder hydraulic forming. The horizontal and longitudinal micro displacement can offset the disadvantages brought by a rigid structure, the powder flow is promoted, the edge of the special-shaped core is filled more compactly, and the edge of a product subjected to hydraulic forming cannot be cracked.
2. The upper cover plate and the lower cover plate are fixedly connected through the pull rod, and compared with the traditional scheme that no pull rod is arranged, and the upper cover plate and the lower cover plate are directly connected through a rubber sleeve; the setting of pull rod enables whole mould overall stability to improve, is convenient for after the powder is filled, and the mould is filled the platform and is carried to in the hydraulic pressure steel cylinder from the powder.
3. After the die is adopted, the die with the special-shaped through hole does not need to form a solid blank firstly and then machine the special-shaped through hole again, so that the utilization rate of materials can be effectively improved, the material cost is saved for some precious raw materials, the material cost of a product is reduced, the waste loss of a special-shaped hole processing link is reduced, and the qualification rate of the product is improved; the consumption of machining tools and tools is reduced, and the cost of the tools and working hours is saved; the requirements for personnel skills are reduced, and the quality level and the performance consistency of the product are improved.
Drawings
FIG. 1 is a schematic structural view of a wet-type cold isostatic pressing die for special-shaped through-hole parts of the present invention;
fig. 2 is the utility model discloses special-shaped through-hole part wet-type cold isostatic pressing mould top view.
Labeled in the figure as: 1-upper cover plate, 11-upper cover plate positioning groove, 2-lower cover plate, 21-lower cover plate positioning groove, 3-special-shaped mold core, 31-mold core body, 32-upper positioning protrusion, 33-lower positioning protrusion, 4-rubber sleeve, 5-pull rod, 6-feeding through hole and 7-sealing rubber plug.
Detailed Description
The following detailed description of the present invention will be provided in order to further understand the concept of the present invention, the technical problems, the technical features constituting the technical solutions, and the technical effects brought by the technical features of the present invention, which are described in the following with reference to the accompanying drawings. However, the description of the embodiments is illustrative and not intended to limit the present invention.
The product of the shaping circular port that wet-type cold isostatic pressing mould of traditional scheme can be fine, the fashioned reason of dysmorphism hole can not as follows: wet-type cold isostatic compaction mould is to powder press forming, the mobility of powder is relatively poor, the powder that packs into in the mould when the powder holds the cavity, because the poor reason of mobility, the powder can not be fine fills the corner of dysmorphism core, and upper cover plate and lower apron all are the rubber material in the traditional scheme, be provided with the recess that is less than the core size on upper cover plate and the lower apron, in order to prevent that the powder from getting into the upper cover plate, lower apron recess, the core both ends are usually with recess interference fit in order to realize sealing connection, fashioned product edge department can the fracture at last. The utility model overcomes the shortcoming of traditional mould, invent a mould that can shaping dysmorphism through-hole.
As shown in fig. 1, the wet-type cold isostatic pressing die for special-shaped through-hole parts of the present invention comprises an upper cover plate 1, a lower cover plate 2, a special-shaped mold core 3, a rubber sleeve 4 and a pull rod 5; the special-shaped core 3 comprises a core body 31, an upper positioning bulge 32 and a lower positioning bulge 33, wherein the upper positioning bulge 32 is arranged on the upper end surface of the core body 31, and the lower positioning bulge 33 is arranged on the lower end surface of the core body 31; a lower cover plate positioning groove 21 matched with the lower positioning bulge 33 is formed in the upper surface of the lower cover plate 2, the lower positioning bulge 33 is located in the lower cover plate positioning groove 21 and is in clearance fit with the lower cover plate positioning groove 21, and the lower end surface of the mold core body 31 is attached to the upper surface of the lower cover plate 2; an upper cover plate positioning groove 11 matched with the upper positioning bulge 32 is formed in the lower end face of the upper cover plate 1, the upper positioning bulge 32 is located in the upper cover plate positioning groove 11 and is in clearance fit with the upper cover plate positioning groove 11, and the upper end face of the mold core body 31 is attached to the lower end face of the lower cover plate 2; the rubber sleeve 4 is arranged between the upper cover plate 1 and the lower cover plate 2, the outer side wall of the lower part of the upper cover plate 1 is hermetically connected with the inner side wall of the upper part of the rubber sleeve 4, and the outer side wall of the upper part of the lower cover plate 2 is hermetically connected with the rubber sleeve 4; a powder containing cavity is formed on the inner surface of the rubber sleeve 4, the side surface of the mold core body 31, the lower end surface of the upper cover plate 1 and the upper end surface of the lower cover plate 2; pull rod avoidance through holes matched with the pull rods 5 are symmetrically formed in the upper edge of the upper cover plate 1 and the lower edge of the lower cover plate 2, external threads are formed in two ends of each pull rod 5, the pull rods 5 penetrate through the pull rod avoidance through holes, the upper ends of the pull rods 5 extend out of the upper end face of the upper cover plate 1, the lower ends of the pull rods 5 extend out of the lower end face of the lower cover plate 2, nuts matched with the external threads are arranged at the upper end and the lower end of each pull rod 5, and the nuts are matched with the threads to fasten the upper cover plate 1 and the lower cover plate 2; spring washers are arranged between the nut and the upper surface of the upper cover plate 1 and between the nut and the lower surface of the lower cover plate 2.
In the present invention, the special-shaped mold core 31 means that the mold core body 31 is a prism or a prism table, such as a triangular prism, a triangular prism table, a quadrangular prism table, etc.; also included are columns or pylons having irregular cross-sectional shapes, such as columns having a race track-shaped cross-sectional shape, pylons having a race track-shaped cross-sectional shape, columns having a rounded rectangular cross-sectional shape, pylons having a rounded rectangular cross-sectional shape, and the like.
The shapes of the upper cover plate 1 and the lower cover plate 2 are not limited, in the embodiment of the utility model, the upper cover plate 1 and the lower cover plate 2 are both in the shape of a cylindrical table, the upper end and the lower end of the rubber sleeve 4 are in a circular shape, and the inner diameter of the upper end of the rubber sleeve 4 is 0.5mm smaller than the diameter of the lower part of the upper cover plate 1; the inner diameter of the lower end of the rubber sleeve 4 is 0.5mm smaller than the diameter of the upper part of the lower cover plate 2, and the rubber sleeve 4 is tightly sleeved on the outer side wall of the lower part of the upper cover plate 1 and the outer side wall of the upper part of the lower cover plate 2 so as to realize the airtight connection between the rubber sleeve 4 and the upper cover plate 1 as well as the lower cover plate 2. Besides, the airtight connection between the rubber sleeve 4 and the upper cover plate 1 and the lower cover plate 2 is diversified, and if the rubber sleeve is adhered by using an adhesive, the rubber sleeve 4 can be tightly hooped with the upper cover plate 1 and the lower cover plate 2 by using a hoop. As shown in fig. 2, in the embodiment of the present invention, 4 pull rod avoiding through holes are uniformly formed on the upper circumferential edge of the upper cover plate 1 and the lower circumferential semicircle of the lower cover plate 2; the pull rod 5 is cylindrical, the pull rod avoiding through hole is a circular hole, and the inner diameter of the pull rod avoiding through hole is larger than the diameter of the pull rod; the pull rods 5 are provided with 4 pull rods, external threads are arranged at two ends of each pull rod 5, the pull rods 5 penetrate through the pull rods on the upper cover plate 1 respectively to avoid through holes and the pull rods on the lower cover plate 2 to avoid the through holes, the nuts are screwed on the external threads, the upper cover plate 1 and the lower cover plate 2 are tensioned towards the special-shaped mold core 3, and spring gaskets are arranged between the nuts and the upper surface of the upper cover plate 1 and between the nuts and the lower surface of the lower cover plate 2. The pull rod avoiding through holes are uniformly arranged so as to enable the upper cover plate 1 and the lower cover plate 2 to be stressed uniformly, and the pull rods 5 are arranged to enable the upper cover plate 1 and the lower cover plate 2 to be tensioned towards the special-shaped mold core 3, so that the lower end face of the mold core body 31 is attached to the upper surface of the lower cover plate 2, and the upper end face of the mold core body 31 is attached to the lower end face of the lower cover plate 2; the pull rod 5 is arranged, so that the upper cover plate 1, the lower cover plate 2 and the special-shaped mold core 3 can be connected into a whole, and the subsequent mold can be conveniently carried.
The upper positioning protrusion 32 is located in the upper cover plate positioning groove 11 and is in clearance fit with the upper cover plate positioning groove 11, and the clearance fit means that when the upper positioning protrusion 32 is located in the upper cover plate positioning groove 11, gaps are formed between the upper positioning protrusion 32 and the upper cover plate positioning groove 11 in the circumferential direction and the radial direction. The lower positioning protrusions 33 are located in the lower cover plate positioning slots 21 and are in clearance fit with the lower cover plate positioning slots 21, where clearance fit means that when the lower positioning protrusions 33 are located in the lower cover plate positioning slots 21, gaps exist between the lower positioning protrusions 33 and the lower cover plate positioning slots 21 in the circumferential direction and the radial direction. When the special-shaped mold core 3 is wrapped by powder, the special-shaped mold core 3 has certain displacement in the horizontal direction along with the change of hydraulic pressure due to the clearance fit arrangement; the arrangement of the spring gasket enables the whole body consisting of the upper cover plate 1, the lower cover plate 2, the special-shaped mold core 3 and the rubber sleeve 4 to have certain displacement in the longitudinal direction when powder is hydraulically molded; the horizontal and longitudinal micro displacement can offset the disadvantages brought by a rigid structure, promote the powder flow, ensure the edge filling of the special-shaped mold core 3 to be more compact and avoid the corner cracking of the edge of the product after hydraulic forming.
Furthermore, a first annular rubber ring surrounding the edge of the upper end face of the core body (31) is arranged between the upper end face of the core body (31) and the lower surface of the upper cover plate (1); a second annular rubber ring surrounding the edge of the lower end face of the core body (31) is arranged between the lower end face of the core body (31) and the upper surface of the lower cover plate (2). The first annular rubber ring and the second annular rubber ring have elasticity and deform under pressure. The arrangement of the first annular rubber ring and the second annular rubber ring can ensure that the lower end surface of the core body 31 is hermetically connected with the upper surface of the lower cover plate 2 and the upper end surface of the core body 31 is hermetically connected with the lower surface of the upper cover plate 1 on one hand, so as to prevent powder from entering the upper end surface of the core body 31 and the lower end surface of the core body 31; on the other hand, first annular rubber circle and second annular rubber circle have elasticity, and the pressurized deformation that produces, and the structure can make special-shaped core 3 under the parcel of powder, along with hydraulic pressure's change, also has certain displacement in vertical, can further promote the mobility of powder, makes 3 edge fillings of special-shaped core compacter, the special-shaped through-hole shaping of being convenient for.
In the middle of traditional mould, upper cover plate 1 is a closed whole, wants to hold the chamber to the powder and fills, must take off upper cover plate 1 earlier, and after the powder was filled, the gum cover 4 cover was around upper cover plate 1 again. However, in the actual operation process, the upper cover plate 1 is taken down, then the rubber sleeve 4 is filled with the split bodies, and after the powder is filled, the rubber sleeve 4 deforms due to the flowing of the powder, so that the rubber sleeve 4 and the upper cover plate 1 are not convenient to install. In the utility model, preferably, in order to facilitate the filling of the powder, the upper cover plate 1 is convenient to install, the upper surface of the upper cover plate 1 is provided with a feeding through hole 6, and the feeding through hole 6 is communicated with the powder accommodating cavity; a sealing rubber plug 7 matched with the feeding through hole 6 is arranged in the feeding through hole 6. The sealing rubber plug 7 is arranged for blocking the through hole of the feeding 6 and preventing hydraulic liquid from leaking into the powder containing cavity. In the embodiment of the utility model, two feeding through holes 6 are arranged, and the two feeding through holes 6 are circular holes and are symmetrically arranged; the diameter of the sealing rubber plug 7 is 0.5mm larger than that of the feeding through hole 6, so that the design is favorable for avoiding liquid leakage during hydraulic forming. When powder is filled, the sealing rubber plug 7 is pulled out, the powder is alternately filled into the two feeding through holes 6, the powder is compacted through mechanical vibration, and then the sealing rubber plug 7 is plugged into the feeding through holes 6, so that the powder filling is completed. Then will the utility model discloses during the cold isostatic pressing mould was put into to special-shaped through-hole part wet-type cold isostatic pressing mould, treat the powder compaction shaping back under hydraulic effect, hoist the mould out from the cold isostatic pressing machine, then dismantle nut, spring shim, upper cover plate 1, gum cover 4, special-shaped core 3 of 1 upper end of upper cover plate to accomplish the drawing of patterns of product. After the product is demoulded, the parts are assembled into a whole, then the rubber plug 7 is opened to fill powder, and the next product is formed.
Furthermore, in order to facilitate the pulling out of the sealing rubber plug 7, a handle is arranged on the upper portion of the sealing rubber plug 7, the handle is fixedly connected with the rubber plug 7, and the shape of the handle is not limited, such as a circular ring shape.
The thickness of the sealed joint between the upper part of the rubber sleeve 4 and the outer side wall of the lower part of the upper cover plate 1 and the sealed joint between the lower part of the rubber sleeve 4 and the outer side wall of the upper part of the lower cover plate 2 are both larger than the thickness of the middle part of the rubber sleeve 4; the upper part and the lower part of the rubber sleeve 4 are in smooth transition with the middle part of the rubber sleeve 4. In the embodiment of the utility model, the upper cover plate 1 and the lower cover plate 2 are both in the shape of a cylindrical table, the upper end and the lower end of the rubber sleeve 4 are in a circular shape, and the inner diameter of the upper end of the rubber sleeve 4 is 0.5mm smaller than the diameter of the lower part of the upper cover plate 1; the inner diameter of the lower end of the rubber sleeve 4 is 0.5mm smaller than the diameter of the upper part of the lower cover plate 2, and the rubber sleeve 4 is tightly sleeved on the outer side wall of the lower part of the upper cover plate 1 and the outer side wall of the upper part of the lower cover plate 2 so as to realize the airtight connection between the rubber sleeve 4 and the upper cover plate 1 as well as the lower cover plate 2. The upper part and the lower part of the rubber sleeve 4 are thicker, which is beneficial to ensuring the sealing effect between the rubber sleeve 4 and the upper cover plate 1 and the lower cover plate 2; the thinner middle part of the rubber sleeve 4 is beneficial to transferring liquid pressure, reducing pressure loss and promoting powder flow in the forming process, and is further beneficial to product forming. In the embodiment of the utility model, gum cover 4 adopts resistant oily, withstand voltage high-elastic polyurethane one-time casting to make, and is preferred, and gum cover 4 upper portion and 1 lower part lateral wall sealing connection department of upper cover plate and gum cover 4 lower part are 15mm with 2 upper portion lateral wall sealing connection department thickness of lower apron, and gum cover 4 middle part thickness holds powder portion thickness 5mm, the smooth transition of coupling portion.
The upper positioning projection 32 and the lower positioning projection 33 are both cylindrical, and the lower cover plate positioning groove 21 and the upper cover plate positioning groove 11 are circular grooves. The embodiment of the utility model provides an in special-shaped core 3 adopt Cr12 or Cr12MoV steel to make, columniform upper portion location arch 32 and lower part location arch 33 compare in the square shape etc. the machine-shaping of being more convenient for. The embodiment of the utility model provides an in, between upper portion location arch 32 and the upper cover plate constant head tank 11, between lower part location arch 33 and the lower cover plate constant head tank 21 axial clearance is 5mm, and radial clearance is 2mm. The clearance value design can ensure that the special-shaped mold core 3 has a certain movement amount along with the pressure change under the wrapping of powder, and the problem that the dimension error of the special-shaped through hole of the molded product is large due to the overlarge movement amount of the special-shaped mold core 3 is solved.
Be provided with the lug at 1 upper surface of upper cover plate, the lug be provided with do benefit to the utility model discloses dysmorphism through-hole part wet-type cold isostatic pressing mould transport.
The outer side wall of the core body 31 is polished. Polishing treatment can solve the powder among the hydraulic forming process and glue the problem of gluing core body 31, the later stage drawing of patterns of being not convenient for.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (7)
1. The wet-type cold isostatic pressing mould for the special-shaped through hole part is characterized in that: comprises an upper cover plate (1), a lower cover plate (2), a special-shaped mold core (3), a rubber sleeve (4) and a pull rod (5); the special-shaped mold core (3) comprises a mold core body (31), an upper positioning bulge (32) and a lower positioning bulge (33), wherein the upper positioning bulge (32) is arranged on the upper end surface of the mold core body (31), and the lower positioning bulge (33) is arranged on the lower end surface of the mold core body (31); a lower cover plate positioning groove (21) matched with the lower positioning bulge (33) is formed in the upper surface of the lower cover plate (2), the lower positioning bulge (33) is positioned in the lower cover plate positioning groove (21) and is in clearance fit with the lower cover plate positioning groove (21), and the lower end surface of the mold core body (31) is attached to the upper surface of the lower cover plate (2); an upper cover plate positioning groove (11) matched with the upper positioning bulge (32) is formed in the lower end face of the upper cover plate (1), the upper positioning bulge (32) is located in the upper cover plate positioning groove (11) and is in clearance fit with the upper cover plate positioning groove (11), and the upper end face of the mold core body (31) is attached to the lower end face of the lower cover plate (2); the rubber sleeve (4) is arranged between the upper cover plate (1) and the lower cover plate (2), the outer side wall of the lower part of the upper cover plate (1) is hermetically connected with the inner side wall of the upper part of the rubber sleeve (4), and the outer side wall of the upper part of the lower cover plate (2) is hermetically connected with the rubber sleeve (4); a powder containing cavity is formed on the inner surface of the rubber sleeve (4), the side surface of the mold core body (31), the lower end surface of the upper cover plate (1) and the upper end surface of the lower cover plate (2); pull rod avoiding through holes matched with the pull rods (5) are symmetrically formed in the upper edge of the upper cover plate (1) and the lower edge of the lower cover plate (2), external threads are formed in two ends of each pull rod (5), each pull rod (5) penetrates through each pull rod avoiding through hole, the upper end of each pull rod (5) extends out of the upper end face of the upper cover plate (1), the lower end of each pull rod (5) extends out of the lower end face of the lower cover plate (2), nuts matched with the external threads are arranged at the upper end and the lower end of each pull rod (5), and the nuts are matched with the threads to fasten the upper cover plate (1) and the lower cover plate (2); spring gaskets are arranged between the nut and the upper surface of the upper cover plate (1) and between the nut and the lower surface of the lower cover plate (2).
2. The wet cold isostatic press for forming shaped through-hole parts according to claim 1, wherein: a feeding through hole (6) is formed in the upper surface of the upper cover plate (1), and the feeding through hole (6) is communicated with the powder containing cavity; a sealing rubber plug (7) matched with the feeding through hole (6) is arranged in the feeding through hole (6).
3. The wet type cold isostatic pressing die for specially-shaped through-hole parts according to claim 2, wherein: a handle is arranged at the upper part of the sealing rubber plug (7).
4. The wet cold isostatic press for forming shaped through-hole parts according to claim 1, wherein: the thickness of the sealed joint between the upper part of the rubber sleeve (4) and the outer side wall of the lower part of the upper cover plate (1) and the sealed joint between the lower part of the rubber sleeve (4) and the outer side wall of the upper part of the lower cover plate (2) are both larger than the thickness of the middle part of the rubber sleeve (4); the upper part and the lower part of the rubber sleeve (4) are in smooth transition with the middle part of the rubber sleeve (4).
5. The shaped through-hole part wet cold isostatic press mould as claimed in any one of claims 1 to 4, wherein: the upper positioning bulge (32) and the lower positioning bulge (33) are both cylindrical, and the lower cover plate positioning groove (21) and the upper cover plate positioning groove (11) are circular grooves.
6. The wet cold isostatic press for forming shaped through-hole parts according to any one of claims 1 to 4, wherein: a lifting lug is arranged on the upper surface of the upper cover plate (1).
7. The wet cold isostatic press for forming shaped through-hole parts according to any one of claims 1 to 4, wherein: and polishing the outer side wall of the core body (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222042427.0U CN217803526U (en) | 2022-08-04 | 2022-08-04 | Wet-type cold isostatic pressing mould for special-shaped through hole parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222042427.0U CN217803526U (en) | 2022-08-04 | 2022-08-04 | Wet-type cold isostatic pressing mould for special-shaped through hole parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217803526U true CN217803526U (en) | 2022-11-15 |
Family
ID=83973162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222042427.0U Active CN217803526U (en) | 2022-08-04 | 2022-08-04 | Wet-type cold isostatic pressing mould for special-shaped through hole parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217803526U (en) |
-
2022
- 2022-08-04 CN CN202222042427.0U patent/CN217803526U/en active Active
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