CN111730055A

CN111730055A - Profiling die

Info

Publication number: CN111730055A
Application number: CN202010723263.0A
Authority: CN
Inventors: 谢家滨; 王根秀; 邹锦延; 郑辉
Original assignee: Xiamen Tungsten Co Ltd; Fujian Changting Jinlong Rare Earth Co Ltd
Current assignee: Fujian Changting Jinlong Rare Earth Co Ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2020-10-02

Abstract

The invention discloses a profiling mold which comprises a forming assembly, a profiling assembly and a driving assembly, wherein the forming assembly is arranged on the forming assembly; the molding assembly comprises a plurality of molding pieces, and a cavity is formed by the plurality of molding pieces and the profiling assembly in a surrounding manner; the driving assembly comprises a plurality of drivers, and the drivers are connected with the forming parts and used for driving part or all of the forming parts to move so as to open or close the cavity. The driver can drive the formed part to move, so that the die can be automatically opened or closed, the die pressing is conveniently demoulded, the demoulding efficiency is improved, and the automatic production is favorably realized; the outer surface of the compact can also be protected from demolding.

Description

Profiling die

Technical Field

The invention relates to a profiling mold, in particular to a profiling mold for a neodymium iron boron pressed blank.

Background

The production of neodymium iron boron green compacts generally employs a powder metallurgy process, in which raw materials are added into a mold and compacted to obtain a green compact of a certain strength. The die mainly comprises a pressing head and a forming cavity, the forming cavity determines the main shape of a pressed blank, and the pressing head moves in the forming cavity to press powder. When in demoulding, the pressed blank is usually ejected by a demoulding part, and by adopting the ejection demoulding way, the pressing head needs to be completely ejected out of the forming cavity, and then the pressed blank is ejected by the corresponding demoulding part, so that the demoulding efficiency is low, and the automatic production is not facilitated; in the ejection process, the outer surface of the pressed compact still needs to rub against the inner wall of the cavity, and the surface of the pressed compact is easy to have defects such as cracks, unfilled corners and the like.

Disclosure of Invention

The invention aims to overcome the defect of low demoulding efficiency in the pressing forming process in the prior art and provides a profiling mold.

The invention solves the technical problems through the following technical scheme:

the profiling die is characterized by comprising a forming assembly, a profiling assembly and a driving assembly;

the molding assembly comprises a plurality of molding pieces, and a cavity is formed by the plurality of molding pieces and the profiling assembly in a surrounding manner; the driving assembly comprises a plurality of drivers, and the drivers are connected with the forming parts and used for driving part or all of the forming parts to move so as to open or close the cavity.

In the scheme, the structural form is adopted, the formed part is used as a main molding part of the shape of the pressed compact, the inner surface of the formed part forms the shape of the main outer surface of the pressed compact except the pressing surface, and the formed part can be driven to move by a driver to realize the automatic opening or closing of the die, so that the demoulding of the pressed compact is facilitated, the demoulding efficiency is improved, and the automatic production is facilitated; the outer surface of the compact can also be protected from demolding.

Preferably, the driving end of the driver is connected with the forming part and used for driving the corresponding forming part to move along the axial direction or the radial direction of the cavity.

In this scheme, each driver can drive the formed part of corresponding connection and move along the radial direction of die cavity to the lateral wall of mould can be to its four weeks divergent removal, thereby opens or close the mould. Each actuator is also able to drive the corresponding connected profile in the axial direction of the mould cavity, so that the side wall of the mould can move in its own direction, thus opening or closing the mould. Accordingly, each actuator can also drive the correspondingly connected profile to move in other ways to open or close the mold, for example, such that the profile moves in an arcuate path. It will be appreciated that the particular manner of movement may also be selected in conjunction with the configuration of the workpiece itself, for example for regular shapes such as rectangular parallelepiped, radial, axial or other manners of movement of the mould side walls may be selected. For a workpiece with a complex forming surface, it is necessary to ensure that the surface of the workpiece cannot be damaged during the moving process, for example, if the forming surface has a protruding portion, the moving mode for damaging the surface needs to be avoided.

Preferably, the plurality of molding members sequentially surround to form a cavity with an opening at least one end, and the profiling assembly is arranged in the opening and moves in the cavity to press the workpiece.

Preferably, the plurality of molding pieces surround in sequence to form a cavity with openings at two ends, and the openings comprise a first opening and a second opening;

the profiling assembly comprises a first profiling piece and a second profiling piece; the first profiling is arranged in the first opening, and the second profiling is arranged in the second opening; the first die member and/or the second die member move within the cavity to press a workpiece.

In this scheme, adopt foretell structural style, the formed part surrounds into the cavity that both ends have the opening to set up corresponding die mould piece in each opening, can follow arbitrary one direction or suppress the raw materials in two directions.

Preferably, the molding assembly comprises four molding pieces, and the four molding pieces sequentially surround to form a cavity with a top opening and a bottom opening;

the die mould subassembly includes pressure head and lower pressure head, go up the pressure head set up in the top opening, lower pressure head set up in the bottom opening.

In this scheme, adopt foretell structural style, set up the opening in the vertical direction to be convenient for suppress the raw materials.

Preferably, the profiling die further comprises a lower pressure head support, and the lower pressure head support is arranged at the lower end of the lower pressure head and used for fixing and supporting the lower pressure head.

In this scheme, fix and support the lower pressure head through lower pressure head support piece, the pressure head applied force when suppressing on one hand can be born to its one side, and on the other hand also can change different lower pressure heads according to the specification demand of different products.

Preferably, the driving assembly includes four drivers, the four drivers are respectively connected with the four forming members, and each driver is respectively used for driving the corresponding forming member to move along the radial direction of the cavity so as to open or close the cavity.

In this scheme, four drivers are connected with the formed part that corresponds respectively to can drive the formed part along radial direction removal, thereby open or close the die cavity respectively from the mould all around.

Preferably, the profiling mold further comprises a connecting plate, and two ends of the connecting plate are respectively connected with the forming piece and the driving end of the driver.

Preferably, the actuator is a cylinder.

Preferably, the profiling mold is applied to pressing of neodymium iron boron green compacts.

In the scheme, the profiling mold is applied to pressing of the neodymium iron boron pressed blank, and the forming assembly can be driven to move by the driving assembly to close the mold; adding a green compact raw material into a cavity formed after the forming assembly is closed; then the pressure head is arranged in the opening of the cavity and is moved and pressed; after compression molding, the molding component can be driven by the driving component to move so as to open the mold, so that the green compact is taken out; then closing the die to perform next pressing; therefore, in the manufacturing process, the automatic opening and closing of the die are realized, the production efficiency is improved, and the automatic production is facilitated.

Preferably, the forming member includes a magnetic conductive forming member and a non-magnetic conductive forming member, the magnetic conductive forming member and the non-magnetic conductive forming member do not interfere with each other, and the two magnetic conductive forming members are arranged in parallel relatively.

In this scheme, set up two forming parts of relative parallel arrangement into the magnetic conduction forming part, can form the magnetic field and magnetize and demagnetize the compact.

The positive progress effects of the invention are as follows: the formed part is used as a main molding part of the shape of the pressed compact, the inner surface of the formed part forms the shape of the main outer surface of the pressed compact except the pressing surface, and the formed part can be driven to move by a driver to realize the automatic opening or closing of the die, so that the demoulding of the pressed compact is facilitated, the demoulding efficiency is improved, and the automatic production is facilitated; the outer surface of the compact can also be protected from demolding.

Drawings

FIG. 1 is a schematic structural diagram of a profiling mold according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a forming assembly and a profiling assembly of a profiling mold according to an embodiment of the present invention;

FIG. 3 is a schematic view of the configuration of the lower ram and the lower ram support when coupled according to an embodiment of the present invention;

FIG. 4 is a schematic view of the configuration of the lower ram and the lower ram support when coupled according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a lower pressure head support according to an embodiment of the present invention.

Molding assembly 100

First forming sidewall 110

Second profiled sidewall 120

Third forming sidewall 130

Fourth forming sidewall 140

Top end opening 150

Bottom end opening 160

Profiling assembly 200

Upper ram 210

Lower ram 220

Convex part 221

Lower ram support 230

Groove 231

Notch 232

Deformed groove 233

Drive assembly 300

First driver 310

Second driver 320

Third driver 330

Fourth driver 340

Connecting plate 400

Base 500

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.

The profiling mold comprises a molding assembly 100, a profiling assembly 200 and a driving assembly 300; the molding assembly 100 comprises a plurality of molding pieces, and the molding pieces and the profiling assembly 200 surround to form a cavity; the drive assembly 300 includes a plurality of drives connected to the mold sections for driving some or all of the mold sections to move to open or close the mold cavities. By adopting the structure, the formed part is used as a main molding part of the shape of the pressed compact, the inner surface of the formed part forms the shape of the main outer surface of the pressed compact except the pressing surface, and the formed part can be driven to move by the driver to realize the automatic opening or closing of the die, so that the demoulding of the pressed compact is facilitated, the demoulding efficiency is improved, and the automatic production is facilitated; the outer surface of the compact can also be protected from demolding.

In a preferred embodiment, a plurality of molding members sequentially surround to form a cavity having an opening at least one end, and the profiling assembly 200 is disposed in the opening and moves in the cavity to press the workpiece. A plurality of molded parts surround to form a cavity with an opening at least one end, the opening can be used for accommodating the profiling component 200, and the green compact raw material can also enter the cavity through the opening; and the inner surface of the cavity surrounded by the molded part and the profiling surface of the profiling assembly 200 jointly form the outer surface of the green compact.

In specific implementation, the direction of the opening can be set according to actual needs; for example, the opening may be in a vertical direction, a horizontal direction, or other directions.

As a specific embodiment, as shown in fig. 1 and 2, the molding assembly 100 includes four molding members, namely, a first molding sidewall 110, a second molding sidewall 120, a third molding sidewall 130, and a fourth molding sidewall 140; the mold pieces in turn enclose a cavity having a top opening 150 and a bottom opening 160. Specifically, the first forming sidewall 110 and the third forming sidewall 130 are disposed opposite to each other, and the second forming sidewall 120 and the fourth forming sidewall 140 are disposed opposite to each other. The second forming sidewall 120 and the fourth forming sidewall 140 are disposed between the first forming sidewall 110 and the third forming sidewall 130, and disposed at both ends, respectively.

The profiling assembly 200 includes an upper ram 210 and a lower ram 220, the upper ram 210 being disposed within the top end opening 150 and the lower ram 220 being disposed within the bottom end opening 160.

By adopting the above structural form, the opening is arranged in the vertical direction, the lower press head 220 can be fixed during pressing, and pressing is performed by moving the upper press head 210; the upper press head 210 may be fixed and the pressing may be performed by moving the lower press head 220; the upper pressing head 210 and the lower pressing head 220 can be moved simultaneously to perform pressing, and the specific pressing mode can be selected according to actual requirements.

The preferred mode is that fixed lower pressure head 220 is suppressed through last pressure head 210, and when adopting this pressing mode, top end opening 150 can regard as feed inlet and suppression mouth simultaneously to can refine the production processes into the feeding, place processes such as pressure head 210 and suppression, be favorable to further improving production efficiency.

As a preferred embodiment, as shown in fig. 1, the driving assembly 300 includes four drivers, a first driver 310, a second driver 320, a third driver 330 and a fourth driver 340;

the four drivers are respectively connected with the four molded parts, specifically, the first driver 310 is connected with the outer surface of the first molded side wall 110, the second driver 320 is connected with the outer surface of the second molded side wall 120, the third driver 330 is connected with the outer surface of the third molded side wall 130, and the fourth driver 340 is connected with the outer surface of the fourth molded side wall 140;

each driver is used for driving the corresponding forming piece to move along the radial direction of the cavity so as to open or close the cavity; specifically, when the mold is opened, the first driver 310 drives the first forming sidewall 110 to move along a radial direction, that is, along a direction away from the center of the cavity or along a direction away from the third forming sidewall 130; correspondingly, the other forming side wall is also moved radially away from the mould cavity under the action of the corresponding driver, so that the mould is opened. When the mold is closed, there is an opposite movement path to that of the mold when opened.

In one embodiment, the first forming sidewall 110, the second forming sidewall 120, the third forming sidewall 130 and the fourth forming sidewall 140 can move simultaneously to open or close the mold, or can partially move therein to open or close the mold. When the four molding side walls move simultaneously, the side walls diverge towards the periphery or are closed inwards, so that the opening or closing of the mold is realized.

As another specific embodiment, in conjunction with fig. 1, each driver may be connected to an end portion of the corresponding molding sidewall so as to drive the corresponding molding sidewall to move along the axial direction of the cavity, so that the sidewall of the mold can move in its own direction, that is, in the vertical direction, so as to open or close the mold. Accordingly, each actuator can also drive the correspondingly connected profile to move in other ways to open or close the mold, for example, such that the profile moves in an arcuate path.

In a preferred embodiment, the profiling mold further includes a lower ram supporter 230, and the lower ram supporter 230 is disposed at a lower end of the lower ram 220 for fixing and supporting the lower ram 220.

As a specific embodiment, as shown in fig. 3 to 5, the connection surface of the lower ram 220 and the lower ram support 230 is provided with a boss 221; the connecting surface of the lower pressure head supporting member 230 and the lower pressure head 220 is provided with a groove 231, the bottom of the groove 231 is provided with a notch 232, the notch 232 extends towards one side opposite to the connecting surface, and the extending tail end is provided with a deformation groove 233. The two side walls of the groove 231 can be deformed to both sides by the action of the break groove 232 and the deformation groove 233, so that the lower pressing head 220 can be conveniently installed in the groove 231. Wherein, the deformation groove 233 may be a circular through groove.

As a specific embodiment, as shown in fig. 4, an installation groove is provided at the notch of the lower pressure head support 230, and the installation groove is perpendicular to the notch and penetrates through the lower pressure head support. When the lower pressure head is arranged in the groove, the lower pressure head can be fixed in the mounting groove through the bolt to clamp the lower pressure head.

In specific implementation, when the protrusion 221 of the lower pressing head 220 is installed in the groove 231 of the lower pressing head support 230, the two sidewalls of the groove 231 can be deformed by the notch 232 and the deformation groove 233 of the lower pressing head support 230, so as to facilitate the installation of the protrusion 221 therein. The lower ram 220 may also be clamped by bolting the mounting slots after the bosses 221 are seated in the recesses 231. By adopting the structure form, the lower pressing head can be conveniently installed and replaced, and the bearing strength of the lower pressing head during pressing can be ensured.

As a specific embodiment, as shown in fig. 2 and 3, the size of the protruding portion 221 gradually increases from the connecting surface thereof, specifically, the protruding portion 221 may be dovetail-shaped, and the groove 231 may be a dovetail groove. Therefore, the lower pressure head can be more tightly arranged in the lower pressure head supporting piece, and the connection strength and the reliability are improved.

In a preferred embodiment, the profiling mold further comprises a connecting plate 400, and both ends of the connecting plate 400 are respectively connected with the driving ends of the forming member and the driver.

As a specific embodiment, as shown in fig. 1, the profiling mold includes four connecting plates 400, one end of the connecting plate 400 is connected to the lower end of the outer surface of the formed part, and the other end of the connecting plate 400 is fixedly connected to the driving end of the driver. The lower ram supports 230 are disposed in the space surrounded by the four connection plates 400.

Specifically, the connection plate 400 may be connected to the corresponding molding sidewall by fixing bolts.

As a specific implementation manner, the profiling mold further comprises a base 500, and the forming assembly 100, the profiling assembly 200 and the driving assembly 300 are disposed on the base 500, so that the profiling mold can move to stations corresponding to different production processes along with the base 500, thereby improving the production efficiency.

In a preferred embodiment, the actuator is a cylinder.

As a specific embodiment, the driving assembly 300 includes four cylinders, and the four cylinders are respectively connected to the corresponding forming sidewalls directly or indirectly. As shown in fig. 1, the four oil cylinders are respectively disposed at the bottom end of the mold and connected to the molding sidewall through a connecting plate 400. The output end of the oil cylinder moves along the radial direction of the cavity, so as to drive the connecting plate 400 to further drive the forming side wall to move correspondingly.

As a specific embodiment, the profiling mold is applied to the pressing of the neodymium iron boron green compact.

The profiling mold is applied to the compression of the neodymium iron boron green compact, and the forming assembly 100 can be driven to move by the driving assembly 300 to close the mold; adding green compact raw materials into a cavity formed after the forming assembly 100 is closed; then the pressure head is arranged in the opening of the cavity and is moved and pressed; after the press molding, the molding assembly 100 may be driven by the driving assembly 300 to move to open the mold, thereby removing the green compact; and then the mould is closed again for the next pressing. Therefore, in the manufacturing process, the automatic opening and closing of the die are realized, the production efficiency is improved, and the automatic production is facilitated.

As a preferred implementation mode, the forming member includes a magnetic conductive forming member and a non-magnetic conductive forming member, the magnetic conductive forming member and the non-magnetic conductive forming member do not interfere with each other, and the two magnetic conductive forming members are arranged in parallel relatively. Two formed parts which are arranged in parallel relatively are set as magnetic conductive formed parts, so that a magnetic field can be formed to magnetize and demagnetize the pressed compact.

As a specific embodiment, as shown in fig. 1 and 2, the first forming sidewall 110 and the third forming sidewall 130 are magnetic conductive side plates; the second and fourth shaped

sidewalls

120 and 140 are nonmagnetic side plates. And, the connection plate 400 is also a non-magnetic fixed plate.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. The profiling mold is characterized by comprising a forming assembly, a profiling assembly and a driving assembly;

2. A profiling mold according to claim 1, wherein the drive end of the actuator is connected to the profile part for driving the corresponding profile part to move in the axial or radial direction of the cavity.

3. A profiling die according to claim 1 wherein a plurality of said profiled members surround in sequence to form a cavity having an opening at least one end, said profiling assembly being disposed within said opening and movable within said cavity to compress the workpiece.

4. A profiling mold according to claim 3, wherein a plurality of the shaped members surround in sequence to form a cavity having openings at both ends, the openings comprising a first opening and a second opening;

5. A profiling die according to claim 4, wherein the forming assembly comprises four forming members which in turn enclose a cavity having a top end opening and a bottom end opening;

6. A profiling die according to claim 5, further comprising a lower ram support provided at a lower end of the lower ram for holding and supporting the lower ram.

7. A profiling mold according to claim 5, wherein the drive assembly comprises four said drivers, four said drivers being respectively connected to four said shaped members, each said driver being respectively adapted to drive the corresponding shaped member to move in a radial direction of the cavity to open or close the cavity.

8. A profiling die according to claim 1, further comprising a connecting plate, both ends of which are connected to the profiled member and the drive end of the actuator respectively.

9. A profiling die according to claim 1, wherein the actuator is a cylinder.

10. A profiling die according to any one of claims 1 to 9, wherein the profiling die is applied to the pressing of neodymium iron boron green compacts.

11. The profiling die of claim 10, wherein the forming members comprise a magnetically permeable forming member and a magnetically non-permeable forming member, the magnetically permeable forming member and the magnetically non-permeable forming member do not interfere with each other, and the two magnetically permeable forming members are arranged in parallel with each other.