CN110202824B - Die carrier mechanism for high-precision powder die-pressing forming servo press - Google Patents

Abstract

The invention discloses a die carrier mechanism for a high-precision powder molding servo press, which comprises a mother type, an upper sliding component, a lower sliding component, a stationary die mounting plate, a middle rod seat and a core rod, wherein a lower type seat is arranged above the stationary die mounting plate, a gap is reserved between the lower type seat and the stationary die mounting plate, a lower type seat is arranged on the lower type seat, a middle rod seat is arranged in the gap between the lower type seat and the stationary die mounting plate, the die mounting plate is arranged above the lower type seat, the mother type is arranged on the die mounting plate, the middle rod seat is fixedly connected with the mother type, a plurality of die cavities in clearance fit with the lower type are formed in the mother type, a plurality of core rods penetrating through the lower type are arranged on the middle rod seat, and the top of the core rod is arranged in the die cavity. The invention can conveniently press the filling powder into a cylindrical product with concentric inner ring and outer ring by arranging the female mold, the upper mold, the lower mold and the core rod matched with the female mold on the mold mounting plate, and can ensure the pressing precision of the equipment.

Description

Die carrier mechanism for high-precision powder die-pressing forming servo press

Technical Field

The invention relates to the field of powder processing die frames, in particular to a die frame mechanism for a high-precision powder die-pressing servo press.

Background

Powder metallurgy is a process and technique for manufacturing metal powders and for manufacturing metal materials and shaped articles from the metal powders as a base material. In powder metallurgy, compression molding is the most important and widely used molding method. The die-press forming is to put metal powder or powder mixture into a steel die, press the powder by the die punch, release the pressure, and release the pressed compact from the die to finish the forming process. And the die carrier is an essential process device for manufacturing the powder metallurgy product.

The existing equipment for pressing the filling powder is a powder forming machine, but the die carrier adopted by the existing powder forming machine is to fix a middle die provided with a mother die on a machine tool, connect an upper die and a lower die on the upper side and the lower side of the mother die, press a product through the cooperation of the upper die and the mother die, and eject the product through the lower die. However, the existing female mold is in floating connection with the upper mold and the lower mold, so that the upper mold and the lower mold are difficult to accurately align with the position on the female mold, the mold is easy to damage, in addition, due to the fact that the upper mold and the lower mold are in floating connection with the female mold, the pressed product is unevenly stressed due to the deviation generated when the upper mold and the lower mold move, the contact position of the upper mold and the lower mold with the female mold is difficult to grasp, and therefore, when the upper mold and the lower mold are installed, repeated debugging is needed by professional technicians, and the installation process is complicated. In addition, the existing upper die and lower die provide power for up-and-down movement through a rocker arm, so that unstable filling of powder in a mother type is easily caused, and the precision of a pressed product is poor.

Disclosure of Invention

The invention aims to provide a die carrier mechanism for a high-precision powder die-pressing servo press, which has high pressing precision and convenient debugging.

The invention aims at realizing the following technical scheme:

the utility model provides a die carrier mechanism for servo press of high-accuracy powder compression molding, includes the female type, with female type complex last sliding component and with female type be connected down sliding component, still include stationary die mounting panel, well stick seat and plug, the lower type seat is installed to stationary die mounting panel top, and leaves the clearance between lower type seat and the stationary die mounting panel, the surface mounting of lower type seat has a plurality of vertical and hollow lower types, and the clearance between lower type seat and the stationary die mounting panel is equipped with well stick seat, is equipped with the die mounting panel above the lower type seat, installs the female type on the die mounting panel, well stick seat and female type fixed connection, processing have a plurality of die cavities with lower type clearance fit on the female type, be equipped with many plug that run through down on the well stick seat, and the plug top is arranged in the die cavity, stationary die mounting panel below is equipped with down sliding component, lower sliding component includes down the sliding block, drives down the lower servo motor connecting block that the sliding block reciprocated to and connect down slider and die mounting panel, and the guide post that the clearance is equipped with on the upper side of die mounting panel, the upper and lower type seat, the cylinder, the upper and lower type seat and the upper die cavity, the upper and lower type seat are equipped with on the die cavity, the upper and lower type seat.

The middle rod seat is U-shaped, the core rod is arranged on the inner bottom surface of the middle rod seat, and the top surface of the U-shaped middle rod seat is connected with the mother type.

And a core rod cover plate for fixing the core rod is arranged on the middle rod seat.

The die comprises a die cavity and is characterized in that a feeding mechanism is arranged on the female surface of one side of the die cavity and comprises a bottom plate, a driving motor arranged on the bottom plate, a screw rod connected with an output shaft of the driving motor, a nut seat sleeved on the screw rod and in threaded fit with the screw rod, a U-shaped frame hinged to the nut seat, and a hopper arranged on the U-shaped frame, wherein the bottom plate is fixed on a frame on one side of the die, the nut seat is connected with the U-shaped frame on the side wall of one side of the die, which is close to the side wall of the die, through a universal joint, one end of the U-shaped frame, which is far away from the universal joint, is connected with a pushing support, the pushing support is positioned above the female, the hopper is hinged to the pushing support above the female, a discharge hole matched with the die cavity is machined at the bottom of the hopper, and a spring assembly which drives the hopper to be tightly abutted against the female is arranged on the U-shaped frame.

The invention has the following effects:

(1) The filling powder can be conveniently pressed into a cylindrical product with concentric inner and outer rings by arranging the female mold, the upper mold, the lower mold and the core rod matched with the female mold on the mold mounting plate, and meanwhile, the process of debugging the mold can be omitted by the upper guide post and the lower guide post on the mold mounting plate, and the precision of the product pressed by equipment can be ensured;

(2) The lower die is provided with the middle rod seat which can float along with the die, so that the height difference of the lower sliding component can be conveniently adjusted to adapt to the pressing of products with various shapes;

(3) The feeding mechanism which is driven by the driving motor to move the hopper is arranged, and meanwhile, the spring assembly drives the hopper to be close to the mother type, so that the phenomenon of material leakage or material clamping can be avoided;

(4) By arranging the hopper, the lower-type ejected product can be pushed out of the die cavity, so that the cost of a special pushing mechanism is saved;

(5) By arranging the universal joint connecting nut seat and the U-shaped frame, the pushing support can be ensured to automatically adjust the balance angle under the action of the tension of the spring assembly, so that the stable operation of the pushing support in the moving process is ensured;

(6) The installation is convenient and the control is flexible.

Drawings

Fig. 1 is a side view of the present invention.

Fig. 2 is a front view of the inventive die.

FIG. 3 is a schematic view of the installation of the lower, core, master and upper dies of the present invention.

Fig. 4 is a top view of the feed mechanism of the present invention.

Reference numerals: 1. a master form; 11. a mold cavity; 2. an upper slide assembly; 21. an upper slider; 22. an upper servo motor connecting block; 23. an upper guide post; 24. an upper seat; 25. upper type; 26. an upper cover plate; 3. a lower slide assembly; 31. a lower slider; 32. a lower servo motor connecting block; 33. a lower guide post; 4. a stationary mold mounting plate; 5. a mold mounting plate; 6. a middle rod seat; 7. a core rod; 71. a core rod cover plate; 8. a lower seat; 81. a lower mold; 82. a lower cover plate; 9. a feeding mechanism; 91. a bottom plate; 92. a driving motor; 93. a screw rod; 94. a nut seat; 95. a U-shaped frame; 96. a hopper; 97. a discharge port; 98. a spring assembly; 99. a universal joint; 910. and a pushing bracket.

Detailed Description

Examples

As shown in fig. 1 to 4, the high-precision die-forming servo press die carrier mechanism provided by the embodiment comprises a female die 1, an upper sliding component 2 matched with the female die 1, a lower sliding component 3 connected with the female die 1, a stationary die mounting plate 4, a die mounting plate 5, a middle rod seat 6 and a core rod 7, wherein the stationary die mounting plate 4 is fixed on a machine tool through a pressing block, a lower die seat 8 is arranged above the stationary die mounting plate 4, a gap is reserved between the lower die seat 8 and the stationary die mounting plate 4, a plurality of vertical and hollow lower dies 81 are arranged on the surface of the lower die seat 8, the lower dies 81 are arranged on the lower die seat 8 through a lower die cover plate 82, the gap between the lower die seat 8 and the stationary die mounting plate 4 is provided with the middle rod seat 6, the die mounting plate 5 is arranged above the lower die mounting plate 8, the female die 1 is arranged on the die mounting plate 5, the middle rod seat 6 is in a U shape, the top surface of a U-shaped middle rod seat 6 is connected with a female mold 1, a plurality of mold cavities 11 in clearance fit with a lower mold 81 are machined in the female mold 1, a plurality of core rods 7 penetrating through the lower mold 81 are arranged on the middle rod seat 6, in order to ensure that workpieces are annular, the tops of the core rods 7 are arranged in the mold cavities 11, a core rod cover plate 71 for fixing the core rods 7 is arranged on the surface of the inner side of the middle rod seat 6, the core rods 7 can be vertically arranged on the middle rod seat through the core rod cover plate 71, a lower sliding component 3 is arranged below a stationary mold mounting plate 4, the lower sliding component 3 comprises a lower sliding block 31, a lower servo motor connecting block 32 for driving the lower sliding block 31 to move up and down, and a lower guide post 33 for connecting the lower sliding block and the mold mounting plate 5, an upper sliding component 2 is arranged above the mold mounting plate 5, and the upper sliding component 2 comprises an upper sliding block 21, the upper servo motor connecting block 22 for driving the upper sliding block 21 to move up and down, the upper guide column 23 for connecting the die mounting plate 5 and the upper sliding block 21, the upper type seat 24 arranged at the bottom of the upper sliding block 21 and the upper type 25 arranged at the bottom of the upper type seat 24, a plurality of upper type 25 are arranged on the upper type seat 24 through the upper type cover plate 26, the outer wall of the upper type 25 is in clearance fit with the inner wall of the die cavity 11, and the upper type 25, the die cavity 11, the lower type 81 and the core rod 7 form a hollow cylinder.

The feeding mechanism 9 is arranged on the surface of the female mold 1 on one side of the mold cavity 11, the feeding mechanism 9 comprises a bottom plate 91, a driving motor 92 arranged on the bottom plate 91, a screw rod 93 connected with an output shaft of the driving motor 92, a nut seat 94 sleeved on the screw rod 93 and in threaded fit with the screw rod 93, a U-shaped frame 95 hinged on the nut seat 94, and a hopper 96 arranged on the U-shaped frame 95, the bottom plate 91 is fixed on a frame on one side of the mold, the side wall of the nut seat 94, which is close to one side of the mold, is connected with the U-shaped frame 95 through a universal joint 99, one end of the U-shaped frame 95, which is far away from the universal joint 99, is connected with a pushing support 910, the pushing support 910 is positioned above the female mold 1, the hopper 96 is hinged on the pushing support 910 above the female mold 1, a discharge hole 97 matched with the mold cavity 11 is machined at the bottom of the hopper 96, a spring assembly 98 for driving the hopper 96 to be tightly abutted with the female mold cavity 11 is arranged on the U-shaped frame 95, and when the hopper 96 is driven to move by the driving motor 92, the bottom surface of the hopper 96 and the surface of the female mold 1 are tightly pushed by the spring assembly 98 can be guaranteed, so that the movement of the hopper 96 is guaranteed to be smoothly pushed by the surface of the female mold 96, and the female mold 1, and the gap is prevented from running, and the powder is prevented from flowing out.

The application method of the invention is as follows:

the filling powder is put into the hopper 96, then the driving motor 92 is started, the driving motor 92 drives the nut seat 94 to move towards the die through the screw rod 93, after the filling powder moves to a specified length, the filling powder in the hopper 96 falls into the die cavity 11, and then the driving motor 92 is controlled to reversely rotate, so that the material box leaves the die cavity 11 for feeding.

When the material box moves to the upper part of the die cavity 11, the lower servo motor connecting block 32 drives the lower sliding block 31 to move upwards, and when the lower sliding block 31 moves upwards, the lower guide post 33 drives the die mounting plate 5, the mother type 1 and the core rod 7 to move upwards, and as the lower type 81 is fixed on the fixed die mounting plate 4, more filling powder can be added into the die cavity 11 when the die mounting plate 5 moves upwards and the mother type 1 and the core rod 7 move upwards.

After the filling powder enters the die cavity 11, the upper servo motor connecting block 22 drives the upper sliding block 21 to move downwards along the upper guide post 23, so that the upper mold 25 stretches into the die cavity 11, then the upper servo motor connecting block 22 continues to move downwards, at the moment, the lower servo motor connecting block 32 drives the lower sliding block 31 to move downwards, the lower mold 81 fixed on the fixed die mounting plate 4 is matched with the upper mold 25 to press the filling powder into a hollow cylindrical magnetic piece, after the upper mold 25 moves downwards to a designated position, the upper servo motor connecting block 22 drives the upper sliding block 21 to move upwards, at the moment, the lower servo motor connecting block 32 continues to move downwards, the workpieces in the die cavity 11 are extruded through the lower mold 81, then the motor 92 is driven to drive the feed box again, the workpieces ejected out of the die cavity 11 are removed, and the feed box is restarted, the lower servo motor connecting block 32 controls the lower sliding block 31 to move upwards again, and the next batch of workpieces is processed.

The foregoing is merely a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification and substitution based on the technical scheme and the inventive concept provided by the present invention should be covered in the scope of the present invention.

Claims (2)

1. The utility model provides a die carrier mechanism for servo press of high-accuracy powder mould pressing formation, includes female type, goes up slip subassembly and is connected its characterized in that with female type complex with female type: the die comprises a die mounting plate, a middle rod seat and a core rod, wherein a lower die seat is arranged above the die mounting plate, a gap is reserved between the lower die seat and the die mounting plate, a plurality of vertical hollow lower dies are arranged on the surface of the lower die seat, the middle rod seat is arranged in the gap between the lower die seat and the die mounting plate, the die mounting plate is arranged above the lower die seat, a female die is arranged on the die mounting plate, the middle rod seat is fixedly connected with the female die, a plurality of die cavities in clearance fit with the lower dies are formed in the female die, a plurality of core rods penetrating the lower dies are arranged on the middle rod seat, the tops of the core rods are arranged in the die cavities, a lower sliding assembly is arranged below the die mounting plate, the lower sliding assembly comprises a lower sliding block, a lower servo motor connecting block driving the lower sliding block to move up and down, and a lower guide post connecting the lower sliding block and the die mounting plate, the upper sliding assembly comprises an upper sliding block, an upper servo motor driving the upper sliding block to move up and down, an upper sliding block connecting the upper die and a guide post connecting the upper sliding block and a plurality of die guide posts arranged on the die mounting plate and the die mounting plate, and the die cavities are arranged on the die mounting plate and the die mounting plate, and the die cavity is in clearance fit with the die cavities, and the die cavities are formed on the die bottom and the die cavities;

the middle rod seat is U-shaped, the core rod is arranged on the inner bottom surface of the middle rod seat, and the top surface of the U-shaped middle rod seat is connected with the mother type;

the die comprises a die cavity and is characterized in that a feeding mechanism is arranged on the female surface of one side of the die cavity and comprises a bottom plate, a driving motor arranged on the bottom plate, a screw rod connected with an output shaft of the driving motor, a nut seat sleeved on the screw rod and in threaded fit with the screw rod, a U-shaped frame hinged to the nut seat, and a hopper arranged on the U-shaped frame, wherein the bottom plate is fixed on a frame on one side of the die, the nut seat is connected with the U-shaped frame on the side wall of one side of the die, which is close to the side wall of the die, through a universal joint, one end of the U-shaped frame, which is far away from the universal joint, is connected with a pushing support, the pushing support is positioned above the female, the hopper is hinged to the pushing support above the female, a discharge hole matched with the die cavity is machined at the bottom of the hopper, and a spring assembly which drives the hopper to be tightly abutted against the female is arranged on the U-shaped frame.

2. The high-precision powder molding servo press mold frame mechanism according to claim 1, wherein: and a core rod cover plate for fixing the core rod is arranged on the middle rod seat.