CN212288891U - Dry bag type isostatic pressing machine - Google Patents

Abstract

The utility model discloses a dry-bag isostatic pressing machine, include: the equipment main bin is internally provided with a high-pressure cavity; the replaceable intracavity component is detachably arranged in the high-pressure cavity of the equipment main bin, and comprises a predetermined number of cavity dry bags; and the replaceable forming die is detachably matched with the replaceable cavity inner component. Based on the utility model discloses, can utilize displaceable intracavity subassembly and displaceable forming die to provide the configurable die cavity of quantity and specification range for doing the pocket type isostatic pressing machine and dry the bag, from this, can make and do the configurable of pocket type isostatic pressing machine support single batch processing quantity and product monomer specification range.

Description

Dry bag type isostatic pressing machine

Technical Field

The utility model relates to a powder processing technique, in particular to can support a configurable dry bag isostatic pressing machine of processing quantity and product specification.

Background

When a conventional dry bag isostatic press presses elongate articles, the number of single batch processing of the elongate articles depends on the number of high pressure chambers provided by the dry bag isostatic press, and the specification range of each elongate article depends on the specification of the high pressure chamber in which it is provided.

Wherein, for the solid and equal diameter bar-shaped slender products, although theoretically, the batch forming can be carried out in one high pressure cavity, if so, in the slender products formed in batch in the dry bag, some or even all of the slender products are not at the central position of the dry bag, but because the dry bag in the high pressure cavity generates radial shrinkage in the high pressure forming period, the slender products which are not at the central position of the dry bag generate radial deviation corresponding to the position in the cavity of the slender products along with the radial shrinkage of the dry bag, and the end parts of all the slender products are restrained by the end covers of the high pressure cavity and can not follow the radial deviation of the slender products, thereby leading to the deformation of the end parts of the slender products which are not at the central position of the high pressure cavity, namely, the batch forming in one high pressure cavity can only ensure the forming quality of one slender product at the central position, the rest positions can only obtain defective products with unqualified quality, so that the quality requirement of batch forming of the slender products in a high-pressure cavity cannot be met.

In addition, for a cylindrical elongated product (such as a cylindrical or round pipe or square pipe or a blind hole pipe product with a single end open) which needs to use a mandrel and is hollow in the middle, only one mandrel can be arranged in one high-pressure cavity, and at this time, the limitation that only one elongated product can be pressed by one high-pressure cavity is more severe.

It can be seen that the number of single batch processing and the individual product specification range of the elongated articles supported by conventional dry bag isostatic presses are limited and cannot be adjusted to changes in demand.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a can support the configurable dry pocket type isostatic pressing machine of single batch processing quantity and product monomer specification, include:

the equipment main bin is internally provided with a high-pressure cavity;

the replaceable intracavity component is detachably arranged in the high-pressure cavity of the equipment main bin, and comprises a predetermined number of cavity dry bags;

and the replaceable forming die is detachably matched with the replaceable cavity inner component.

Optionally, the replaceable molding die further comprises a mandrel enclosed within the at least one cavity dry bag, wherein an end of the mandrel is positioned and constrained within the cavity dry bag.

Optionally, the replaceable intracavity component further comprises an intracavity end cover and an intracavity end seat, the intracavity end seat is provided with seat holes with the number equal to that of the cavity dry bags, a first end of the cavity dry bag is sealed by the intracavity end cover, and a second end of the cavity dry bag is arranged in the seat holes; the replaceable molding die further includes a die holder, and the die holder closes the holder hole.

Optionally, the replaceable molding die further comprises a mandrel enclosed within the at least one cavity dry bag, wherein a first end of the mandrel is positionally constrained by the in-cavity end cap and/or a second end of the mandrel is positionally constrained by the in-cavity end cap through the die holder.

Optionally, the first end of the mandrel is integrated with or removably attached (e.g., plugged or secured by a connector) to the end cap within the cavity to form a positioning constraint of the end cap within the cavity to the first end of the mandrel.

Optionally, the second end of the mandrel is integrated with the die holder or removably mounted (e.g., plugged into or secured by a connector) to the die holder to form a positional constraint of the cavity inner end mount to the second end of the mandrel.

Optionally, the replaceable molding die further comprises a pre-filled dry bag sleeved on the periphery of the mandrel, wherein one end of the pre-filled dry bag is fixed on the die seat, and the other end of the pre-filled dry bag is closed.

Optionally, further comprising: the first outer end cover is used for closing a first end opening of the high-pressure cavity and axially limiting an end cover in the cavity; and the second outer end cover closes the second end opening of the high-pressure cavity and axially limits the cavity inner end seat.

Optionally, the periphery of the cavity inner end seat is further provided with a limit flange; and a pressing ring is further arranged between the second outer end cover and the equipment main bin, and the pressing ring is in limit fit with the limit flange.

Optionally, the replaceable intraluminal component is one of a primary replaceable intraluminal component and a secondary replaceable intraluminal component, and the primary replaceable intraluminal component does not include the same number of dry pouches and the same dry pouch format as the secondary intraluminal component.

Based on the above embodiment, the replaceable in-cavity components and the replaceable forming die can be used for providing the dry bag type isostatic pressing machine with the configurable cavity dry bags with configurable quantity and specification, so that the dry bag type isostatic pressing machine can support the configurability of the single batch processing quantity and the product monomer specification range, and the single batch processing quantity and the product monomer specification range of the elongated product can be disassociated with the specification of the high-pressure cavity of the dry bag type isostatic pressing machine, that is, for the dry bag type isostatic pressing machine with the high-pressure cavity with single specification, different requirements on the single batch processing quantity and the specification range of the elongated product can be met by using different replaceable in-cavity components and replaceable forming dies.

Drawings

Fig. 1 is an exploded view of a dry bag isostatic press according to an embodiment of the present invention;

FIG. 2 is a schematic view of a multi-cavity processing mode half-assembly configuration of the dry bag isostatic press of FIG. 1;

FIG. 3 is a schematic view of a half-assembled configuration of a single-cavity processing mode of the dry bag isostatic press shown in FIG. 1;

FIG. 4 is a schematic structural view of an example multi-cavity processing pattern of the dry bag isostatic press shown in FIG. 1;

FIG. 5 is a schematic structural view of a molding die assembly in the example structure shown in FIG. 4;

FIG. 6 is a mandrel distribution diagram of a forming die assembly in the example configuration shown in FIG. 4;

FIG. 7 is a schematic view of another example multi-cavity processing pattern of the dry bag isostatic press of FIG. 1;

FIG. 8 is a schematic structural view of a molding die assembly in the example structure shown in FIG. 7;

FIG. 9 is a schematic view of an example single cavity processing mode of the dry bag isostatic press of FIG. 1;

FIG. 10 is a schematic structural view of a molding die assembly in the example structure shown in FIG. 9;

FIG. 11 is a schematic view of another example single cavity processing mode of the dry bag isostatic press of FIG. 1;

fig. 12 is a schematic view of the structure of a molding die assembly in the example structure shown in fig. 11.

Description of the reference numerals

10 main cabin of equipment

100 high pressure chamber

110 first outer end cap

120 second outer end cap

140 pressing ring

150 spacing groove

20 replaceable intracavity assembly (Multi-cavity)

200 shaping dry bag (Small caliber)

210 intracavity end cap

211 cover body

212 cover plug

220 cavity inner end seat

230 inner lid aperture

240 position-limiting flange

30 replaceable intracavity assembly (Single cavity)

300 shaping dry bag (heavy caliber)

310 intracavity end cap

320 cavity inner end seat

330 inner cover hole

340 position-limiting flange

350 positioning groove

40 forming die assembly (Multi-core shaft)

400 core (minor diameter)

410 mould seat

420 prepackage dry bag

430 mould end cover

50 Forming die assembly (Single core shaft)

500 core shaft (big diameter)

510 die holder

520 prepackage dry bag

530 mould end cap

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 examples.

Fig. 1 is an exploded view of a dry bag isostatic press according to an embodiment of the present invention. FIG. 2 is a schematic diagram of a multi-cavity processing mode half-assembly configuration of the dry bag isostatic press of FIG. 1. FIG. 3 is a schematic view of a half-assembled configuration of a single-cavity processing mode of the dry bag isostatic press as shown in FIG. 1. Referring to fig. 1 in conjunction with fig. 2 and 3, the dry bag isostatic press in this embodiment may include an apparatus main cartridge 10, a replaceable intracavity component 20 or 30, and a replaceable forming die 40 or 50.

The interior of the main chamber 10 of the apparatus has a high pressure chamber 100. For example, the high pressure chamber 100 may have a first end opening (an upper opening in fig. 1 to 3) and a second end opening (a lower opening in fig. 1 to 3), and the first end opening may be closed by the first outer end cap 110 and the second end opening may be closed by the second outer end cap 120.

The disposable intracavity module 20 or 30 is detachably installed in the high pressure chamber 100 of the main cartridge 10 of the apparatus, and the disposable intracavity module 20 or 30 includes a predetermined number of dry pocket cavities 200 or 300.

In fig. 1 to 3, taking one of the replaceable intracavity component as the replaceable intracavity component (multi-cavity) 20 and the replaceable intracavity component (single-cavity) 30 as an example, wherein the replaceable intracavity component (multi-cavity) 20 may include at least two (e.g., four) dry-formed bags (small-caliber) 200, the replaceable intracavity component (single-cavity) 30 may include at least one (e.g., one) dry-formed bags (large-caliber) 300, that is, the replaceable intracavity component (multi-cavity) 20 may include more dry-formed bags (small-caliber) 200 than the replaceable intracavity component (single-cavity) 30, and the replaceable intracavity component (multi-cavity) 20 may include dry-formed bags (small-caliber) 200 having a radial dimension smaller than the radial dimension of the dry-formed bags (large-caliber) 300 included in the replaceable intracavity component (single-cavity) 30, but the actual design is not limited thereto.

The introduction of the replaceable intra-cavity component (multi-cavity) 20 and the replaceable intra-cavity component (single-cavity) 30 in this embodiment is intended to represent that the replaceable intra-cavity component may be one of a number of different replaceable intra-cavity components that do not all have the same dry bag number and dry bag size, and is not intended to limit the specific form of the replaceable intra-cavity component.

For example, while the manner in which the replaceable intra-cavity component may select between the intra-cavity component of a multi-cavity and the intra-cavity component of a single-cavity has been presented by the introduction of the replaceable intra-cavity component (multi-cavity) 20 and the replaceable intra-cavity component (single-cavity) 30, there may actually be a manner in which the replaceable intra-cavity component may select between different intra-cavity components of a multi-cavity.

For another example, although the illustration shows that at least two dry molded bags (small-gauge) 200 having the same dimensions (radial dimensions) as each other are included in the replaceable intra-cavity component (multi-cavity) 20, at least two dry molded bags (small-gauge) having not all the same dimensions may be included in the replaceable intra-cavity component (multi-cavity) 20, that is, the aforementioned intra-cavity component of the multi-cavity is not limited to the case where the dimensions (radial dimensions) of the dry molded bags included therein are necessarily all the same, but may also allow the intra-cavity component in which the multi-cavity exists to contain dry molded bags having not all the same dimensions (radial dimensions).

That is, the disposable intraluminal component may be one of a primary disposable intraluminal component (e.g., disposable intraluminal component 20) comprising a number of dry pouches and a dry pouch format that is not all the same as the number of dry pouches and the dry pouch format of a secondary intraluminal component (e.g., disposable intraluminal component 30 or a multichamber intraluminal component that differs from the disposable intraluminal component 20).

The replaceable molding dies 40 or 50 are removably mated with the replaceable intracavity components 20 or 30.

Based on the above embodiment, the dry bag type isostatic press can be provided with the configurable number and size of cavity dry bags 200 or 300 by using the replaceable cavity inner assemblies 20 or 30 and the replaceable forming dies 40 or 50, wherein the number and size of the dry bags are not identical, thereby the dry bag type isostatic press can support the configurability of the single batch processing number and the product monomer size. Thus, the number of single-run processing of the elongated article and the product monomer specification can be decoupled from the dry bag isostatic press high pressure chamber 100 specification, i.e., for a dry bag isostatic press with a single specification high pressure chamber 100, different requirements for the number and specification of single-run processing of the elongated article can be met by using different replaceable intracavity components 20 or 30 and replaceable forming dies 40 or 50.

For example, for a solid and equal diameter rod-shaped elongated article, each cavity dry bag 200 or 300 can independently form one rod-shaped elongated article, so that the elongated article formed in each cavity dry bag 200 or 300 can be allowed to be in a central position, that is, the elongated article out of the central position of the cavity dry bag 200 or 300 can be avoided, so that the radial offset of the elongated article along with the radial shrinkage of the cavity dry bag 200 or 300 during high-pressure forming can be reduced or avoided, and the deformation of the end of the elongated article out of the central position can be reduced or avoided.

For a cylindrical elongated product with a hollow middle part, such as a cylindrical or round pipe or a square pipe or a blind hole pipe product with one end open, the compression molding needs to use a mandrel. At this time, the replaceable molding die 40 or 50 may further include a mandrel 400 or 500 enclosed within at least one cavity dry bag 200 or 300.

In fig. 1 to 3, the replaceable forming mold 40 or 50 is one of the replaceable forming mold (multi-mandrel) 40 and the replaceable forming mold (single mandrel) 50, the replaceable forming mold (multi-mandrel) 40 includes mandrels (small diameter) 400 in the same number as the dry forming bags (small diameter) 200 of the replaceable intracavity component (multi-cavity) 20, the replaceable forming mold (single mandrel) 50 includes mandrels (large diameter) 500 in the same number as the dry forming bags (large diameter) 300 of the replaceable intracavity component (single cavity) 30, and the mandrels (small diameter) 400 of the replaceable forming mold (multi-mandrel) 40 may be smaller than the radial dimension of the mandrels (large diameter) 500 of the replaceable forming mold (single mandrel) 50, but the actual design is not limited thereto.

It will be appreciated that this embodiment is illustrated by way of example in which the replaceable molding die 40 or 50 further includes an equal number of mandrels 400 or 500 as the number of cavity dry bags 200 or 300 and are loaded into the cavity dry bags 200 or 300 in an aligned position so as to match the aforementioned illustration of the replaceable intracavity components. In actual compression molding, however, different elongated products may be allowed to be compressed in different molding cavity dry bags 200 or 300, respectively, and thus not all molding cavity dry bags 200 or 300 must be loaded with the mandrel 400 or 500 at the same time.

For example, one portion of the cavity dry bag 200 or 300 may be used to compact solid elongated articles and need not be loaded with a mandrel, while another portion of the cavity dry bag 200 or 300 may be used to compact cylindrical elongated articles and loaded with a mandrel for this purpose.

For another example, the cylindrical elongated article press-molded in at least two of the cavity dry bags 200 or 300 may have different specifications, and in this case, the mandrels inserted into at least two of the cavity dry bags 200 or 300 may have different specifications.

Based on the above embodiments, the dry bag type isostatic press can be made to support single batch processing quantity and product monomer specification configurability by providing a configurable number and specification of cavity dry bags 200 or 300 and a configurable mandrel 400 or 500 arrangement for the dry bag type isostatic press using replaceable cavity components 20 or 30 and replaceable forming dies 40 or 50 that do not have the same number and specification of dry bags.

Thus, while supporting the press forming of cylindrical elongated articles, it is still possible to disassociate the single lot processing quantity and product monomer specifications of the elongated article from the dry bag isostatic press's high pressure chamber 100 specification, i.e., for a dry bag isostatic press with a single specification of the high pressure chamber 100, different requirements for the single lot processing quantity and specification of the elongated article can be met by using different replaceable internal cavity components 20 or 30 and replaceable forming dies 40 or 50.

In the case of pressing the cylindrical elongated article using the mandrel 400 or 500, the end of the mandrel 400 or 500 may be positioned and restrained within the cavity dry bag 200 or 300. The end of the mandrel 400 or 500 that is positioned and restrained within the cavity dry bag 200 or 300 may be at least one end of the mandrel 400 or 500. For example, when the mandrel 400 or 500 is a through-type mandrel that extends through the elongate article, both ends of the mandrel 400 or 500 may be positioned and constrained within the cavity dry bag 200 or 300. For another example, when the mandrel 400 or 500 is a non-through mandrel for blind hole stamping of an elongated article, only one end of the mandrel 400 or 500 may be positioned and constrained within the cavity dry bag 200 or 300.

Accordingly, since the end of the mandrel 400 or 500 can be positioned and restrained in the cavity dry bag 200 or 300, the mandrel 400 or 500 in the high pressure chamber 100 can be prevented from bending regardless of the number and specification of single batch processing, so that the processing quality of the cylindrical elongated product can be ensured.

In order to facilitate the positioning constraint of the mandrel 400 or 500, in this embodiment, the replaceable intracavity component 20 or 30 may further include an intracavity end cap 210 or 310 and an intracavity end seat 220 or 320, the intracavity end seat 220 or 320 defines seat holes equal to the number of the dry cavity bags 200 or 300, a first end (an upper end in fig. 1 and 2 or 3) of the dry cavity bag 200 or 300 is closed by the intracavity end cap 210 or 310, and a second end (a lower end in fig. 1 and 2 or 3) of the dry cavity bag 200 or 300 is installed in the seat hole of the intracavity end seat 220 or 320.

Accordingly, the replaceable molding die 40 or 50 may further include a die holder 410 or 510, and the die holder 410 or 510 closes the holder hole of the cavity inner terminal holder 220 or 320, for example, the die holder 410 or 510 may be embedded in the holder hole of the cavity inner terminal holder 220 or 320, or fixed to the cavity inner terminal holder 220 or 320 by means of a connector.

At this time, a first end (upper end in fig. 1 and 2 or 3) of mandrel 400 or 500 may be positionally restrained by cavity inner end cap 210 or 310, and/or a second end (lower end in fig. 1 and 2 or 3) of mandrel 400 or 500 may be positionally restrained by cavity inner end seat 220 or 320 through die seat 410 or 510.

For example, the first end of the mandrel 400 or 500 may be integral to the intracavity end cap 210 or 310, or removably attached to the intracavity end cap 210 or 310 (e.g., inserted into the intracavity end cap 210 or 310 or secured to the intracavity end cap 210 or 310 by a connector) to form a positional constraint of the intracavity end cap 210 or 310 to the first end of the mandrel 400 or 500.

As another example, the second end of the mandrel 400 or 500 may be integrated into the die holder 410 or 510 (when the first end of the mandrel 400 or 500 is not integrated into the cavity end cap 210 or 310) or detachably mounted to the die holder 410 or 510 (e.g., inserted into the die holder 410 or 510 or fixed to the die holder 410 or 510 by a connector) to form a positioning constraint of the cavity end holder 220 or 320 on the second end of the mandrel 400 or 500.

In addition, the first outer end cap 110 closing the first end opening of the high pressure chamber 100 may form an axial stop for the chamber inner end cap 210 or 310, and the second outer end cap 120 closing the second end opening of the high pressure chamber 100 may form an axial stop for the chamber inner end seat 210 or 310. Wherein, a pressing ring 140 can be further installed between the second outer end cap 120 and the main bin 110 of the apparatus, the outer periphery of the cavity inner end seat 220 or 320 can further have a limit flange 240 or 340, and the pressing ring 140 can be in limit fit with the limit flange 240 or 340, for example, the inner periphery of the pressing ring 140 can form a limit groove 150 which is matched with the limit flange 240 or 340, at this time, the limit of the mold seat 410 or 510 can be further maintained during demolding.

FIG. 4 is a schematic diagram of an example multi-cavity processing pattern of the dry bag isostatic press of FIG. 1. Fig. 5 is a schematic view of the structure of the molding die assembly in the example structure shown in fig. 4. FIG. 6 is a mandrel distribution diagram of a forming die assembly in the example configuration shown in FIG. 4. Referring to fig. 4-6, this example structure illustrates a replaceable intracavity component (multi-cavity) 20 comprising four dry formed pouches (smaller gauge) 200, a replaceable forming die (multi-mandrel) 40 comprising four mandrels (smaller gauge) 400 and supporting an extra-cavity charge.

Referring to fig. 4 and back to fig. 1 and 2, the replaceable intracavity component 20 may include an intracavity end cap 210 and an intracavity end seat 220, the intracavity end cap 210 is axially limited by a first outer end cap 110 closing a first end opening of the high pressure chamber 100, the intracavity end seat 220 is provided with seat holes equal to the number of the dry cavity bags 200, a first end (an upper end in fig. 1 and 2 and 4) of the dry cavity bags 200 is closed by the intracavity end cap 210, and a second end (a lower end in fig. 1 and 2 and 4) of the dry cavity bags is installed in the seat holes of the intracavity end seat 220.

The cavity interior end cap 210 may include a cap body 211, the cap body 211 has cap holes equal to the number of the cavity interior dry bags 200, the cap holes of the cap body 211 are aligned with the seat holes of the cavity interior end seat 220, and a first end (an upper end in fig. 1, 2 and 4) of the cavity interior dry bags 200 may be installed in the cap holes of the cap body 211 and closed by a cap plug 212 inserted in the cap holes. Alternatively, plug cap 212 may be integral to first outer end cap 110.

Referring to fig. 5, the replaceable molding die 40 may include a die holder 410 supporting the mandrel 400, the die holder 410 having an outer diameter larger than that of the mandrel 400, and the die holder 410 closing the holder hole of the cavity inner holder 220, for example, the die holder 410 may be embedded in the holder hole of the cavity inner holder 220.

In this example, the mold base 410 may be integrated (integrally mounted or integrally formed) with the second outer cap 120, as shown in fig. 6, and equiangularly distributed about the second outer cap 120. The replaceable forming die 40 may further comprise a dry pre-charge bag 420 fitted around the mandrel 400, wherein one end of the dry pre-charge bag 420 is fixed to the die holder 410 and the other end is closed by a die end cap 430 (closing the powder pre-charged in the dry pre-charge bag 420), thereby realizing extra-cavity charging of the replaceable forming die 40 outside the high-pressure cavity 100.

When the filled replaceable forming die 40 is loaded into the high pressure chamber 100 and mated with the replaceable intracavity component 20, the second endcap 120 closes the second end opening of the high pressure chamber 100 and forms an axial stop for the chamber inner end seat 210 and:

mold end cap 430 may be positioned at cavity inner end cap 210 by being embedded in cavity inner end cap 210 (the cap hole of cap 211), for example, mold end cap 430 may be embedded in the cap hole of cap 211 and the first end of mandrel 400 (the upper end in fig. 1 and 2 and 4) is inserted in mold end cap 430, at which time mold end cap 430 may also form a positioning constraint for the first end of mandrel 400 (the upper end in fig. 1 and 2 and 4), i.e., the first end of mandrel 400 may be positioned constraint by cavity inner end cap 210 by mold end cap 430 embedded in cavity inner end cap 210;

a die holder 410 providing a fixed support for mandrel 400 may be inserted into the bore of cavity end holder 220, for example, die holder 410 may extend through the bore of cavity end holder 220 and at least partially into cavity dry bag 200 to form a positioning constraint for the second end of mandrel 400 forming a second end (lower end in fig. 1 and 2 and 4) of positioning constraint mandrel 400, i.e., while closing the second end (lower end in fig. 1 and 2 and 4) of forming dry bag 200, such that the first end of mandrel 400 may be positioned constraint by cavity end holder 220 through the mating of die holder 420 and the bore of cavity end holder 220.

In practice, the powder in the pre-filled dry bag 420 may be sealed without using the die end cap 430, and in this case, even if the pre-filled dry bag 420 is used, the other end of the pre-filled dry bag 420 may be sealed by the cavity inner end cap 210, and the positioning constraint for the first end (upper end in fig. 1 and 2 and 4) of the mandrel 400 may be provided by the cavity inner end cap 210.

FIG. 7 is a schematic view of another example multi-cavity processing pattern of the dry bag isostatic press of FIG. 1. Fig. 8 is a schematic view of the structure of the molding die assembly in the example structure shown in fig. 7. Referring to fig. 7 and 8, this example structure is illustrated with replaceable intracavity component (multi-cavity) 20 comprising four dry formed pouches (smaller gauge) 200, and replaceable forming die (multi-mandrel) 40 comprising four mandrels (smaller gauge) 400 and supporting intracavity charges.

Referring first to FIG. 7 and back to FIGS. 1 and 2, the replaceable endoluminal component 20 may be the same as the embodiment shown in FIG. 4 and will not be described again.

Referring to fig. 8, in this example, the replaceable molding die 40 may still include a die holder 410 supporting the mandrel 400, the die holder 410 having an outer diameter larger than the outer diameter of the mandrel 400, and the die holder 410 may close the bore of the cavity end block 220, for example, the die holder 410 may be embedded in the bore of the cavity end block 220 or fixed to the cavity end block 220 by a connector. Unlike the example shown in fig. 4, in the example shown in fig. 8, the replaceable molding die 40 may not include the pre-filled dry bag 420 and the die end cap 430.

The replaceable molding die 40 may be loaded into the high pressure chamber 100 prior to charging, during which the first outer end cap 110 and the intracavity end cap 210 (cap plug 212) may be temporarily unassembled (the first end of the cavity dry bag 200 is now installed in the cap hole of the cap body 211).

When the replaceable molding die 40 is loaded into the high pressure chamber 100 to mate with the replaceable intracavity component 20, the die holder 410, which provides a fixed support for the mandrel 400, is inserted into the holder bore of the intracavity holder 220, e.g., the die holder 410 may extend through the holder bore of the intracavity holder 220 and at least partially into the dry pocket 200 to form a locating constraint for the second end (lower end in fig. 1 and 2 and 7) of the mandrel 400, i.e., the second end of the mandrel 400 may be located and constrained by the intracavity holder 220 by the mating of the die holder 420 and the holder bore of the intracavity holder 220 while closing the second end (lower end in fig. 1 and 2 and 7) of the dry pocket 200.

After the filling of the formed dry bag 200 is completed, the lid plug 212 of the inner cavity end cap 210 may be inserted into the lid hole of the lid body 211 to close the first end (the upper end in fig. 1 and 2 and 7) of the cavity dry bag 200 installed in the lid hole of the lid body 211, and the first end (the upper end in fig. 1 and 2 and 7) of the mandrel 400 may be inserted into the inner cavity end cap 210 (the inner lid hole 230 of the lid plug 210) to form a positioning constraint on the first end of the mandrel 400, i.e., the first end of the mandrel 400 may be directly positioned and constrained by the cavity inner end cap 210. After that, the first outer end cap 110 is used to cover the first end opening of the high pressure chamber 100 where the inner end cap 210 is located.

FIG. 9 is a schematic view of an example single cavity processing pattern of the dry bag isostatic press of FIG. 1. Fig. 10 is a schematic view of the structure of a molding die assembly in the example structure shown in fig. 9. Referring to fig. 9 and 10, this example structure is illustrated with the replaceable intracavity component (single mold cavity) 30 comprising a dry formed bag (large caliber) 300, the replaceable forming mold (single mandrel) 50 comprising a mandrel (large caliber) 500 and supporting the extra-cavity charge.

Referring to fig. 9 and back to fig. 1 and 3, the replaceable intracavity component 30 may include an intracavity end cap 310 and an intracavity end seat 320, the intracavity end cap 310 is axially limited by the first outer end cap 110 closing the first end opening of the high pressure chamber 100, the intracavity end seat 320 has seat holes equal to the number of the dry cavity bags 200, the first end (the upper end in fig. 1 and 3 and 9) of the dry cavity bag 300 is closed by the intracavity end cap 310, and the second end (the lower end in fig. 1 and 3 and 9) of the dry cavity bag is installed in the seat hole of the intracavity end seat 320.

Referring to fig. 10, the replaceable molding die 50 may include a die holder 510 supporting the mandrel 500, the outer diameter of the die holder 510 being larger than the outer diameter of the mandrel 500, and the die holder 510 closing the holder hole of the cavity inner end holder 320, for example, the die holder 510 may be embedded in the holder hole of the cavity inner end holder 320 or fixed to the cavity inner end holder 320 by a connector.

In this example, the mold base 500 may be integrated (integrally mounted or integrally formed) with the second outer end cap 120. The replaceable forming die 50 may further comprise a dry pre-charge bag 520 fitted around the mandrel 500, wherein one end of the dry pre-charge bag 520 is fixed to the die holder 510, and the other end is closed by a die end cap 530 (closing the powder pre-charged in the dry pre-charge bag 520), thereby realizing extra-cavity charging of the replaceable forming die 50 outside the high-pressure cavity 100.

When the filled replaceable molding die 50 is loaded into the high pressure chamber 100 and mated with the replaceable in-chamber component 30, the second outer end cap 120 closes the second end opening of the high pressure chamber 100 and forms an axial stop for the chamber inner end seat 310, and:

mold end cap 530 mates with the cavity wall of high pressure cavity 100 at cavity end cap 310 to effect positioning of mold end cap 530 at cavity end cap 310, and the first end of mandrel 500 (the upper end in fig. 1 and 3 and 9) is inserted into mold end cap 530, at which time mold end cap 530 may also form a positioning constraint on the first end of mandrel 500 (the upper end in fig. 1 and 3 and 9), i.e., the first end of mandrel 500 may be positioned constraint by cavity inner end cap 310 via mold end cap 530 mating with the cavity wall of high pressure cavity 100 at cavity end cap 210;

a die holder 510 providing a fixed support for mandrel 500 is inserted into the bore of cavity inner holder 320, for example, die holder 510 may extend through the bore of cavity inner holder 320 and at least partially into cavity dry bag 300 to form a positioning constraint for the second end of mandrel 500 forming a second end (lower end in fig. 1 and 3 and 9) of positioning constraint mandrel 500, i.e., while closing the second end (lower end in fig. 1 and 3 and 9) of forming dry bag 300, such that the first end of mandrel 500 may be positioned constraint by cavity inner holder 320 through the mating of die holder 520 and the bore of cavity inner holder 320.

In practice, the powder in the pre-filled dry bag 520 may not be capped by the die end cap 530, as in the example of fig. 4-6, and even if the pre-filled dry bag 520 is used, the other end of the pre-filled dry bag 520 may be capped by the cavity inner end cap 310, and the positioning constraint for the first end (the upper end in fig. 1 and 3 and 9) of the mandrel 500 may be provided by the cavity inner end cap 310.

FIG. 11 is a schematic view of another example single cavity processing mode of the dry bag isostatic press of FIG. 1. Fig. 12 is a schematic view of the structure of a molding die assembly in the example structure shown in fig. 11. Referring to fig. 11 and 12, this example structure is illustrated with replaceable intracavity component (single mold cavity) 30 comprising a dry formed bag (large caliber) 300, replaceable forming mold (single mandrel) 50 comprising four mandrels (large caliber) 500 and supporting intracavity charges.

Referring first to FIG. 11 and back to FIGS. 1 and 3, the replaceable endoluminal component 30 may be the same as the embodiment shown in FIG. 9 and will not be described again.

Referring to fig. 12, in this example, the replaceable molding die 50 may still include a die holder 510 supporting the mandrel 500, the outer diameter of the die holder 510 being greater than the outer diameter of the mandrel 500, and the die holder 510 may close the holder hole of the cavity inner holder 320, for example, the die holder 510 may be embedded in the holder hole of the cavity inner holder 320 or fixed to the cavity inner holder 320 by a connector. Unlike the example shown in fig. 9, in the example shown in fig. 12, the replaceable molding die 50 may not include the pre-charge dry bag 520 and the die end cap 530.

The replaceable molding die 50 may be loaded into the high pressure chamber 100 prior to charging, during which the first outer end cap 110 and the inner chamber end cap 310 (which may be integrated) may be temporarily unassembled.

When the replaceable molding die 50 is loaded into the high-pressure chamber 100 to mate with the replaceable intracavity component 30, the die holder 510 providing fixed support for the mandrel 500 is inserted into the holder hole of the intracavity holder 320, for example, the die holder 510 may extend through the holder hole of the intracavity holder 320 and at least partially into the dry pocket 300 to form a positioning constraint for the second end (lower end in fig. 1 and 3 and 11) of the mandrel 500, i.e., the second end of the mandrel 500 may be positioned and constrained by the intracavity holder 320 by the mating of the die holder 520 and the holder hole of the intracavity holder 320 while closing the second end (lower end in fig. 1 and 3 and 11) of the dry pocket 300.

After the filling of the formed dry bag 300 is completed, the inner cavity end cap 310 may be closed off the first end of the cavity dry bag 300 (the upper end in fig. 1 and 3 and 11), and the first end of the mandrel 500 (the upper end in fig. 1 and 3 and 11) may be inserted into the inner cavity end cap 310 (the positioning slot 350) to form a positioning constraint on the first end of the mandrel 500, i.e., the first end of the mandrel 500 may be directly positioned and constrained by the inner cavity end cap 310. Thereafter, the first outer end cap 110 is used to cover the first end opening of the high pressure chamber 100 where the inner end cap 310 is located.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A dry bag isostatic press, comprising:

the equipment main bin is internally provided with a high-pressure cavity;

the replaceable intracavity component is detachably arranged in the high-pressure cavity of the equipment main bin, and comprises a predetermined number of cavity dry bags;

and the replaceable forming die is detachably matched with the replaceable cavity inner component.

2. The dry bag isostatic press according to claim 1, wherein the replaceable forming die further comprises a mandrel enclosed within at least one cavity dry bag, and wherein an end of the mandrel is positioned and constrained within the cavity dry bag.

3. The dry bag isostatic press according to claim 1,

the replaceable intracavity component further comprises an intracavity end cover and an intracavity end seat, the intracavity end seat is provided with seat holes with the number equal to that of the cavity dry bags, the first ends of the cavity dry bags are sealed by the intracavity end cover, and the second ends of the cavity dry bags are arranged in the seat holes;

the replaceable molding die further includes a die holder, and the die holder closes the holder hole.

4. The dry bag isostatic press according to claim 3, wherein the replaceable forming die further comprises a mandrel enclosed within the at least one cavity dry bag, wherein a first end of the mandrel is positionally constrained by the end cap in the cavity and/or a second end of the mandrel is positionally constrained by the end seat in the cavity through the die seat.

5. The dry bag isostatic press according to claim 4, wherein the first end of the mandrel is integrated into or removably attached to the end cap in the chamber to form a positional constraint of the end cap in the chamber to the first end of the mandrel.

6. The dry bag isostatic press according to claim 4, wherein the second end of the mandrel is integral with or removably mounted to the die holder to form a positional constraint of the cavity inner end seat against the second end of the mandrel.

7. The dry bag isostatic press according to claim 3, wherein the replaceable forming die further comprises a pre-filled dry bag fitted around the periphery of the mandrel, wherein the pre-filled dry bag is fixed at one end to the die holder and closed at the other end.

8. The dry bag isostatic press according to claim 3, further comprising:

the first outer end cover is used for closing a first end opening of the high-pressure cavity and axially limiting an end cover in the cavity;

and the second outer end cover closes the second end opening of the high-pressure cavity and axially limits the cavity inner end seat.

9. The dry bag isostatic press according to claim 8, wherein the chamber inner end seat further has a limiting flange at its periphery, and a pressing ring is further provided between the second outer end cover and the main chamber of the apparatus, and the pressing ring is in limiting engagement with the limiting flange.

10. The dry bag isostatic press according to any one of claims 1-9, wherein the replaceable intra-cavity component is one of a primary replaceable intra-cavity component and a secondary replaceable intra-cavity component, the primary replaceable intra-cavity component comprising a number of dry bags and a dry bag format that are not all the same as the number of dry bags and the dry bag format that the secondary intra-cavity component comprises.

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