CN110202824A - A kind of high-accuracy powder molding forming servo press mould frame mechanism - Google Patents

Abstract

The invention discloses a mold base mechanism for a high-precision powder molding servo press. A lower mold seat is installed above the movable mold mounting plate, and there is a gap between the lower mold seat and the fixed mold mounting plate. There is a middle rod seat, and a mold mounting plate is arranged above the lower mold seat, and a female mold is installed on the mold mounting plate, and the middle rod seat is fixedly connected with the female mold. The rod seat is provided with a plurality of mandrels that go through the lower type, and the tops of the mandrels are placed in the mold cavity. The present invention can conveniently press the filling powder into a cylindrical product with concentric inner and outer rings by arranging the mother mold on the mold mounting plate, and the upper mold, the lower mold and the mandrel matched with the mother mold, and at the same time, the equipment can be guaranteed pressing precision.

Description

A mold frame mechanism for high-precision powder molding servo press

technical field

The invention relates to the field of powder processing mold bases, in particular to a mold base mechanism for a high-precision powder molding servo press.

Background technique

Powder metallurgy is the process and technology of manufacturing metal powder and using metal powder as the basic raw material to manufacture metal materials and special-shaped products. In powder metallurgy, compression molding is the most important and widely used forming method. Compression molding is to put metal powder or powder mixture into a steel die, pressurize the powder through die punching, and after the pressure is released, the compact is released from the die to complete the molding process. The formwork is an essential process equipment for manufacturing powder metallurgy products.

The existing equipment used to press and fill powder is a powder molding machine, but the mold base used in the existing powder molding machine is to fix the middle mold with the mother mold on the machine tool, and connect the upper mold to the upper and lower sides of the mother mold. And the lower mold, press the product through the cooperation of the upper mold and the mother mold, and then eject the product through the lower mold. However, due to the floating connection between the existing mother mold and the upper mold and the lower mold, it is easy to cause the upper mold and the lower mold to be difficult to accurately align the position on the mother mold, and it is easy to cause damage to the mold. In addition, because the upper mold and the lower mold Floating connection with the mother mold, so the deviation generated when the upper mold and the lower mold move will cause uneven force on the pressed product, and it is difficult to grasp the contact position of the upper mold and the lower mold with the mother mold. The mold needs to be repeatedly debugged by professional technicians, resulting in cumbersome installation process. In addition, both the existing upper mold and the lower mold provide the power to move up and down through the rocker arm, which is likely to cause unstable powder filling in the mother mold and poor precision of the pressed product.

Contents of the invention

The purpose of the present invention is to provide a high-precision powder molding servo press mold base mechanism with high pressing precision and convenient debugging.

The purpose of the present invention is achieved through the following technical solutions:

A formwork mechanism for a high-precision powder molding servo press, including a mother mold, an upper slide assembly matched with the mother mold, and a lower slide assembly connected with the mother mold, as well as a fixed mold mounting plate, a mold mounting plate, The middle rod seat and the mandrel, the lower mold seat is installed above the fixed mold mounting plate, and there is a gap between the lower mold seat and the fixed mold mounting plate, the surface of the lower mold seat is installed with a plurality of vertical And the hollow lower mold, the gap between the lower mold seat and the fixed mold mounting plate is provided with a middle rod seat, the mold mounting plate is arranged above the lower mold seat, and the female mold is installed on the mold mounting plate. The female mold is fixedly connected, and the female mold is processed with a plurality of mold cavities that fit in the gap with the lower mold. The middle rod seat is provided with a plurality of mandrels penetrating the lower mold, and the top of the mandrel is placed in the mold cavity. A lower sliding assembly is provided below the fixed mold mounting plate, and the lower sliding assembly includes a lower sliding block, a lower servo motor connecting block that drives the lower sliding block to move up and down, and a lower guide column that connects the lower sliding block and the mold mounting plate , an upper sliding assembly is provided above the mold mounting plate, and the upper sliding assembly includes an upper sliding block, an upper servo motor connecting block that drives the upper sliding block to move up and down, an upper guide column connecting the mold mounting plate and the upper sliding block, and an installation The upper type seat at the bottom of the upper sliding block and the upper type installed at the bottom of the upper type seat, there are multiple upper types, and the plurality of upper types are matched with the mold cavity, the upper type, the mold cavity, the lower type and the core The rods form a hollow cylinder.

The middle rod seat is U-shaped, the mandrel is installed 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 female type.

A mandrel cover plate for fixing the mandrel is arranged on the middle rod seat.

The surface of the female mold on one side of the cavity is provided with a feeding mechanism, and the feeding mechanism includes a base plate, a drive motor mounted on the base plate, a screw rod connected to the output shaft of the drive motor, sleeved on the screw rod and connected to the screw rod The threaded nut seat, the U-shaped frame hinged on the nut seat, and the hopper installed on the U-shaped frame, the bottom plate is fixed on the frame on one side of the mold, and the nut seat near the side wall of the mold side passes The universal joint is connected with a U-shaped frame, and the end of the U-shaped frame away from the universal joint is connected with a pusher bracket, and the pusher bracket is located above the mother mold, and the hopper is hinged on the pusher bracket above the mother mold. The bottom is processed with a discharge opening matched with the mold cavity, and the U-shaped frame is provided with a spring assembly that drives the hopper to closely abut the female mold.

The present invention has following effect:

(1) By setting the mother mold on the mold mounting plate, and setting the upper mold, lower mold and mandrel matching the mother mold, the filling powder can be conveniently pressed into a cylindrical product with concentric inner and outer rings, and at the same time through the mold The upper guide column and the lower guide column on the installation plate can avoid the process of debugging the mold and can ensure the accuracy of the equipment to press the product;

(2) The height difference of the lower sliding assembly can be adjusted conveniently by setting the middle rod seat on the lower mold that can float with the mother mold, so as to adapt to the pressing of products of various shapes;

(3) By setting the feeding mechanism that drives the hopper to move by the driving motor, and at the same time drives the hopper to be close to the mother mold through the spring component, the phenomenon of material leakage or material jam can be avoided;

(4) By setting the hopper, the product ejected from the lower mold can be pushed out of the mold cavity, so as to avoid the cost of a special pushing mechanism;

(5) By setting the universal joint to connect the nut seat and the U-shaped frame, it can ensure that the pushing bracket can automatically adjust the balance angle under the tension of the spring assembly, thereby ensuring the smooth operation of the pushing bracket during movement;

(6) Easy installation and flexible control.

Description of drawings

Figure 1 is a side view of the present invention.

Fig. 2 is a front view of the mold of the present invention.

Fig. 3 is a schematic diagram of the installation of the lower mold, the mandrel, the female mold and the upper mold of the mold of the present invention.

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

Reference signs: 1, female mold; 11, mold cavity; 2, upper sliding assembly; 21, upper sliding block; 22, upper servo motor connection block; 23, upper guide column; 24, upper mold seat; 25, upper mold ; 26, the upper cover plate; 3, the lower sliding assembly; 31, the lower sliding block; 32, the lower servo motor connection block; 33, the lower guide column; 4, the fixed mold mounting plate; 5, the mold mounting plate; 6, Middle rod seat; 7, mandrel; 71, mandrel cover plate; 8, lower type seat; 81, lower type; 82, lower type cover plate; 9, feeding mechanism; 91, bottom plate; 92, driving motor; 93, 94, nut seat; 95, U-shaped frame; 96, hopper; 97, discharge port; 98, spring assembly; 99, universal joint; 910, push material support.

Detailed ways

Example

As shown in Figures 1 to 4, the mold base mechanism for the high-precision powder molding servo press provided in this embodiment includes a female mold 1, an upper sliding assembly 2 that cooperates with the female mold 1, and a lower sliding assembly connected with the female mold 1. Sliding assembly 3, fixed mold mounting plate 4, mold mounting plate 5, middle rod seat 6 and mandrel 7, the fixed mold mounting plate 4 is fixed on the machine tool through a briquetting block, above the fixed mold mounting plate 4 A lower mold seat 8 is installed, and there is a gap between the lower mold seat 8 and the fixed mold mounting plate 4, the surface of the lower mold seat 8 is equipped with a plurality of vertical and hollow lower molds 81, and the lower mold 81 passes through The lower type cover plate 82 is installed on the lower type seat 8, the gap between the lower type seat 8 and the fixed mold mounting plate 4 is provided with a middle rod seat 6, and the lower type seat 8 is provided with a mold mounting plate 5, and the mold mounting plate 5 A female mold 1 is installed on the top, and the middle rod seat 6 is U-shaped, and the top surface of the U-shaped middle rod holder 6 is connected with the female mold 1, and the female mold 1 is processed with a plurality of dies that fit with the lower mold 81. Cavity 11, the middle rod seat 6 is provided with a plurality of mandrels 7 that pass through the lower mold 81. In order to ensure that the workpiece is ring-shaped, the top of the mandrel 7 is placed in the mold cavity 11, and the inside of the middle rod seat 6 A mandrel cover plate 71 for fixing the mandrel 7 is provided on the surface, and the mandrel cover 71 can ensure that the mandrel 7 is vertically installed on the middle rod seat, and a lower slide assembly is provided under the fixed mold mounting plate 4 3. The lower sliding assembly 3 includes a lower sliding block 31, a lower servo motor connection block 32 that drives the lower sliding block 31 to move up and down, and a lower guide column 33 that connects the lower sliding block and the mold mounting plate 5, and the mold mounting plate 5. There is an upper sliding assembly 2 above, and the upper sliding assembly 2 includes an upper sliding block 21, an upper servo motor connection block 22 that drives the upper sliding block 21 to move up and down, and an upper guide column that connects the mold mounting plate 5 and the upper sliding block 21 23. The upper type seat 24 installed at the bottom of the upper sliding block 21, and the upper type 25 installed at the bottom of the upper type seat 24. There are multiple upper types 25, and multiple upper types 25 are installed on the upper type through the upper type cover plate 26. On the upper mold seat 24, the outer wall of the upper mold 25 is matched with the inner wall of the mold cavity 11, and the upper mold 25, the mold cavity 11, the lower mold 81 and the mandrel 7 form a hollow cylinder.

The female type 1 surface on the side of the cavity 11 is provided with a feeding mechanism 9, and the feeding mechanism 9 includes a base plate 91, a drive motor 92 installed on the base plate 91, a screw mandrel 93 connected to the output shaft of the drive motor 92, Set on the screw mandrel 93 and the nut seat 94 threaded with the screw mandrel 93, the U-shaped frame 95 hinged on the nut seat 94, and the hopper 96 installed on the U-shaped frame 95, the bottom plate 91 is fixed on one side of the mould. On the frame, the side wall of the nut seat 94 near the mold side is connected with a U-shaped frame 95 through a universal joint 99, and the end of the U-shaped frame 95 away from the universal joint 99 is connected with a pushing bracket 910, and the pushing bracket 910 is located above the female mold 1, the hopper 96 is hinged on the pusher bracket 910 above the female mold 1, the bottom of the hopper 96 is processed with a discharge port 97 matching the mold cavity 11, and the U-shaped frame 95 There is a spring assembly 98 that drives the hopper 96 to be in close contact with the mother mold 1. The spring assembly 98 can ensure that when the drive motor 92 drives the hopper 96 to move, the bottom surface of the hopper 96 is in close contact with the surface of the mother mold 1 to ensure the pushing bracket 910 promotes the smooth operation of the hopper 96, preventing the filling powder in the hopper 96 from flowing out from the gap generated by the movement.

The using method of the present invention is:

Put the filling powder into the hopper 96, then start the driving motor 92, the driving motor 92 drives the nut seat 94 to move to the mold through the screw 93, and after moving to the specified length, the filling powder in the hopper 96 falls into the cavity 11 , and then control the drive motor 92 to rotate in reverse, so that the magazine leaves the cavity 11 for feeding.

When the material box moves above the mold cavity 11, the lower servo motor connection block 32 drives the lower sliding block 31 to move upward, and when the lower sliding block 31 moves upward, the lower guide column 33 drives the mold mounting plate 5, the female mold 1 and the mandrel 7 moves up, because the lower mold 81 is fixed on the fixed mold mounting plate 4, so when the mold mounting plate 5 moves up, the mother mold 1 and the mandrel 7 move up, more filling powder can be added in the mold cavity 11 .

When the filling powder enters the mold cavity 11, the upper servo motor connecting block 22 drives the upper sliding block 21 to move down along the upper guide column 23, so that the upper mold 25 extends into the mold cavity 11, and then the upper servo motor connecting block 22 continues to move downward. At this time, the lower servo motor connection block 32 drives the lower sliding block 31 to go down and pass the lower type 81 fixed on the fixed mold mounting plate 4 to cooperate with the upper type 25 to press the filling powder into a hollow cylindrical magnetic piece, when the upper type 25 After moving to the designated position, the upper servo motor connection block 22 drives the upper sliding block 21 to move upwards, at this time the lower servo motor connection block 32 continues to move down, and the workpiece in the mold cavity 11 is extruded through the lower mold 81, and then the motor 92 is driven Drive the feeding box again to remove the workpieces ejected from the cavity 11 and re-feed. When feeding, the lower servo motor connecting block 32 controls the lower sliding block 31 to move up again to process the next batch of workpieces .

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and any transformation and replacement based on the technical solutions and inventive concepts provided by the present invention should be covered by the scope of protection of the present invention Inside.

Claims (4)

1. A mold base mechanism for a high-precision powder molding servo press, including a female mold, an upper sliding assembly matched with the female mold, and a lower sliding assembly connected with the female mold. It is characterized in that: it also includes a fixed mold installation Plate, mold mounting plate, middle rod seat and mandrel, the lower mold seat is installed above the fixed mold mounting plate, and there is a gap between the lower mold seat and the fixed mold mounting plate, the surface of the lower mold seat Multiple vertical and hollow lower molds are installed, the gap between the lower mold seat and the fixed mold mounting plate is provided with a middle rod seat, the mold mounting plate is arranged above the lower mold seat, and the female mold is installed on the mold mounting plate. The middle rod seat is fixedly connected with the female mold, and the female mold is processed with a plurality of mold cavities that fit in the gap with the lower mold. The middle rod seat is provided with a plurality of mandrels that penetrate the lower mold, and the top of the mandrel Placed in the mold cavity, a lower sliding assembly is provided below the fixed mold mounting plate, and the lower sliding assembly includes a lower sliding block, a lower servo motor connecting block that drives the lower sliding block to move up and down, and a connecting block connecting the lower sliding block and the mold The lower guide column of the mounting plate, an upper sliding assembly is arranged above the mold mounting plate, and the upper sliding assembly includes an upper sliding block, an upper servo motor connecting block that drives the upper sliding block to move up and down, and connects the mold mounting plate and the upper sliding block The upper guide column, the upper type seat installed at the bottom of the upper sliding block, and the upper type installed at the bottom of the upper type seat, there are multiple upper types, and the plurality of upper types are matched with the mold cavity. The cavity, die and mandrel form a hollow cylinder. 2. The mold base mechanism for high-precision powder molding servo press according to claim 1, characterized in that: the middle rod seat is U-shaped, the mandrel is installed on the inner bottom surface of the middle rod seat, The top surface of the U-shaped middle rod seat is connected with the female type. 3. The formwork mechanism for a high-precision powder molding servo press according to claim 2, wherein a mandrel cover plate for fixing the mandrel is provided on the middle rod seat. 4. The mold base mechanism for high-precision powder molding servo press according to claim 1, characterized in that: the surface of the female mold on one side of the mold cavity is provided with a feeding mechanism, and the feeding mechanism includes a bottom plate, a mounting The drive motor on the bottom plate, the screw rod connected with the output shaft of the drive motor, the nut seat set on the screw rod and threadedly matched with the screw rod, the U-shaped frame hinged on the nut seat, and the hopper installed on the U-shaped frame , the bottom plate is fixed on the frame on one side of the mold, the side wall of the nut seat close to the mold side is connected with a U-shaped frame through a universal joint, and the end of the U-shaped frame away from the universal joint is connected with a pushing bracket , and the pusher bracket is located above the mother mold, the hopper is hinged on the pusher bracket above the mother mold, the bottom of the hopper is processed with a discharge port that matches the cavity, and the U-shaped frame is provided with a driving hopper A spring assembly that is tightly abutted against the female form.