CN119839166A

CN119839166A - Difficult-to-deform metal reverse extrusion die device

Info

Publication number: CN119839166A
Application number: CN202510329439.7A
Authority: CN
Inventors: 刘怡文; 吕凌翔; 侯勇强
Original assignee: Changzhou Heshida Machinery Equipment Manufacturing Co ltd
Current assignee: Changzhou Heshida Machinery Equipment Manufacturing Co ltd
Priority date: 2025-03-20
Filing date: 2025-03-20
Publication date: 2025-04-18

Abstract

The invention discloses a difficult-to-deform metal back extrusion die device, which belongs to the technical field of metal extrusion dies and comprises a base, a rotary table and a driving mechanism, wherein the back extrusion die is provided with a plurality of extrusion blocks which are arranged at the top of the rotary table around the rotary table, each back extrusion die comprises a cavity, extrusion blocks of the cavity and a workpiece demoulding mechanism, a pressing plate and pressing blocks, the pressing blocks are uniformly arranged along the bottom end surface of the pressing plate, the number and the vertical positions of the pressing blocks are uniform, the length of the pressing blocks arranged along the circle of the rotary table is gradually increased, the last pressing block is the manufactured length of a workpiece, the pushing mechanism is a coaxial annular piece arranged at the outer side of the rotary table, and a circle of pushing ring which corresponds to the number and the positions of the back extrusion die cavities and the pressing blocks is uniformly arranged on the pushing mechanism, and the pushing ring drives the workpiece to be formed to be transferred in different cavities. The invention provides a difficult-to-deform metal back extrusion die device, which is used for forging a workpiece by arranging a plurality of extrusion dies with different extrusion levels in a rotation assembly line mode, so that the efficiency is improved.

Description

Difficult-to-deform metal reverse extrusion die device

Technical Field

The invention relates to the technical field of metal extrusion dies, in particular to a difficult-to-deform metal reverse extrusion die device.

Background

The difficult-to-deform metal ‌ is a metal material having high deformation resistance and severe work hardening during the processing, and is generally used in the fields of aerospace, automobiles, etc. The difficult-to-deform metal is usually manufactured by adopting processes such as cutting, milling or forging due to the physical properties of the difficult-to-deform metal, and the material waste is caused by drilling when the existing cutting and milling processes are used for processing some difficult-to-deform metal hollow shaft parts, and the material waste is caused by the forward extrusion process in the casting extrusion process, and the backward extrusion process is preferred.

The current casting process of the difficult-to-deform material generally adopts heating-embryo making-heating-extrusion-post treatment, because the deformation of the difficult-to-deform metal needs to be heated again after preparation, otherwise, the final forging temperature cannot be reached, and the continuous workpiece transfer can lead to low production efficiency.

Disclosure of Invention

In order to overcome the problems in the background technology, the invention provides a difficult-to-deform metal back extrusion die device, wherein a plurality of layers of extrusion dies are arranged in a rotary assembly line mode, so that metal workpieces can be rapidly switched from blank making to forming, and simultaneously, a plurality of workpieces can be sequentially carried out, and the forming efficiency of a hollow shaft is improved.

In order to solve the technical problems, the technical scheme of the invention is as follows:

A reverse extrusion die for a metal which is difficult to deform,

Comprises a base;

The turntable and the driving mechanism are arranged at the top of the base, and the driving mechanism drives the turntable to horizontally rotate at the top of the base;

The device comprises a rotary table, a reverse extrusion die, a workpiece demoulding mechanism, a rotary table and a rotary table, wherein a plurality of reverse extrusion dies are arranged on the top of the rotary table around the rotary table;

The pressing blocks are uniformly arranged along the bottom end surface of the pressing plate, the number and the vertical positions of the pressing blocks are consistent, the length of the pressing blocks arranged along the circle of the turntable is gradually increased, and the last pressing block is the manufactured length of a workpiece;

The pushing mechanism is a coaxial annular piece arranged on the outer side of the rotary table, the inner side of the pushing mechanism is fixedly connected with the outer side wall of the rotary table through a plurality of connecting rods, and a circle of pushing rings which correspond to the number and the positions of the die cavities and the pressing blocks of the reverse extrusion die are uniformly arranged on the pushing mechanism, and the pushing rings drive workpieces to be transferred in different types of cavities.

Preferably, the device further comprises a material returning mechanism, wherein the material returning mechanism is an air cylinder, and the output end of the material returning mechanism faces the last cavity towards the outside of the device and pushes the formed part away from the device.

Preferably, the pushing mechanism further comprises a movable block, the pushing ring is opened towards the outer side of the device, the movable blocks are arranged on two sides of the opening of the pushing ring, one end of each movable block is rotatably connected with the pushing mechanism main body through a hinge, and a first reset spring for driving the movable blocks to reset is further connected between the movable blocks and the pushing mechanism main body.

The rotary table comprises a rotary table body, a rotary connecting seat, a rotary shaft, a driven wheel, a motor, a driving wheel and a driving wheel, wherein the rotary connecting seat is arranged at the middle position of the bottom of the rotary table body and is rotationally connected with the top of the rotary table body, the rotary shaft is vertically arranged inside the rotary table body, the bottom of the rotary shaft is fixed at the bottom of the rotary table body and is coaxially arranged with the rotary table body, the driven wheel is connected with the lower end of the rotary shaft, the motor is arranged on the side wall of the rotary table body, the output end of the motor penetrates through the side wall of the rotary table body, and the driving wheel meshed with the driven wheel is arranged at the end part of the output end of the rotary table body.

Preferably, the back extrusion die further comprises a sleeve, a movable groove, a connecting column and a second reset spring, wherein the sleeve is vertically fixed at the bottom of the extrusion block and is coaxially arranged with the extrusion block, the sleeve is hollow and is provided with an opening at the bottom, the sleeve is slidably arranged in the movable groove arranged at the bottom of the cavity, the connecting column is vertically arranged at the bottom of the inner wall of the movable groove, the top of the connecting column penetrates into the sleeve, and the second reset spring for driving the sleeve and the extrusion block to reset is sleeved outside the connecting column.

Preferably, a circle of limiting grooves which are obliquely arranged above and smoothly transited with the top end surface of the pushing mechanism are formed in the bottom opening of the cavity.

Compared with the prior art, the technical scheme of the invention has the beneficial effects that:

The invention provides a difficult-to-deform metal back extrusion die device, which is provided with a plurality of layers of extrusion dies in a rotary assembly line mode, so that metal workpieces can be rapidly switched from blank making to forming, and simultaneously, a plurality of workpieces can be sequentially carried out, thereby improving the forming efficiency of a hollow shaft, and specifically comprises the following steps:

The rotary table is driven by the motor to rotate, so that different workpieces are sequentially moved into the device by a pushing ring on the pushing mechanism, and different pressing blocks sequentially extrude the passing workpieces in the position state when pressing down;

The extrusion process is that a pressing block enters the cavity under the action of a pressing plate, a sleeve enters a movable groove and extrudes a second reset spring, a first pressing block extrudes the workpiece, the extrusion block below the workpiece is positioned at the bottom until the first extrusion block finishes extrusion, after the extrusion mechanism resets, the spring pushes the sleeve and the extrusion block to reset, and the pushing ring moves to drive the workpiece to be formed to move into the next reverse extrusion die;

The pushing mechanism can push away the extruded workpiece from the device, on the basis, the pushing ring is provided with an opening, two sides of the opening are provided with movable blocks, the movable blocks can be turned outwards, pushing is convenient, and meanwhile, the first reset spring resets after pushing is finished, and the following flow is continued.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic elevational view of the present invention;

FIG. 2 is a schematic top view of the base and turntable of the present invention;

FIG. 3 is a schematic view of the overall structure of the press plate and press block of the present invention;

FIG. 4 is an enlarged schematic view of the structure of FIG. 2A according to the present invention;

FIG. 5 is a schematic diagram showing the cross-sectional structure of the back extrusion die of the present invention;

FIG. 6 is a schematic view of the extrusion process of the workpiece in different back extrusion dies according to the present invention.

The mark illustration in the figure comprises 1, a base, 2, a rotary table, 3, a support column, 4, a rotary connecting seat, 5, a rotary shaft, 6, a driven wheel, 7, a motor, 8, a driving wheel, 9, a pushing mechanism, 91, a pushing ring, 92, a movable block, 93, a hinge, 94, a first reset spring, 10, a pressing plate, 11, a pressing block, 12, a material returning mechanism, 13, a reverse extrusion die, 131, a cavity, 132, a limit groove, 133, a extrusion block, 134, a sleeve, 135, a movable groove, 136, a connecting column, 137, a second reset spring and 14, a connecting rod.

Detailed Description

For a better understanding of the objects, structures and functions of the present invention, the technical solution of the present invention will be described in further detail with reference to the drawings and the specific preferred embodiments.

In the description of the present invention, it should be understood that the terms "left", "right", "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and "first", "second", etc. do not indicate the importance of the components, and thus are not to be construed as limiting the present invention. The specific dimensions used in the examples are for illustration of the technical solution only and do not limit the scope of protection of the invention. It will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Unless specifically stated or limited otherwise, the terms "mounted," "configured," "connected," "secured" and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Examples

As shown in figures 1-3, 5 and 6, the invention provides a difficult-to-deform metal back extrusion die device, which comprises a base 1, a turntable 2 and a driving mechanism, wherein the turntable 2 and the driving mechanism are arranged on the top of the base 1, and the driving mechanism drives the turntable 2 to horizontally rotate on the top of the base 1.

As shown in fig. 2 and 5, the reverse extrusion die 13 is provided in plural around the turntable 2 at the top of the turntable 2, and the reverse extrusion die 13 includes a cavity 131, an extrusion block 133 of the cavity 131, and a work piece demoulding mechanism.

More specifically, the workpiece demoulding mechanism comprises a sleeve 134, a movable groove 135, a connecting column 136 and a second reset spring 137, wherein the sleeve 134 is vertically fixed at the bottom of the extrusion block 133 and is coaxially arranged with the extrusion block 133, the sleeve 134 is hollow and is provided with an opening at the bottom, the sleeve 134 is slidably arranged in the movable groove 135 arranged at the bottom of the cavity 131, the connecting column 136 is vertically arranged at the bottom of the inner wall of the movable groove 135, the top of the connecting column 136 penetrates into the sleeve 134, the second reset spring 137 for driving the sleeve 134 and the extrusion block 133 to reset is sleeved outside the connecting column 136, in an initial state, the top end surface of the extrusion block 133 is connected into the opening at the top of the cavity 131, a certain space is reserved for a workpiece, when the workpiece enters the upper part, the workpiece can enter the cavity 131 to be aligned, when the pressing block 11 is pressed down and finally positioned to the bottom abutting surface, the pressing block 11 is continuously pressed down, after the reverse extrusion processing is completed, the sleeve 134 below the pressing block 133 is moved up in the movable groove 135 under the action of the second reset spring 137, and the extrusion block 133 is pushed to reset in the cavity 131, and finally enters the initial position and the workpiece can be pushed to the next position to be processed by the pushing mechanism 9.

As shown in fig. 2, 3 and 6, the pressing plate 10 and the pressing block 11 are coaxially arranged, the pressing plate 10 and the turntable 2 are coaxially arranged, the middle of the top of the pressing plate 10 is connected with the output end of the extruder, the pressing blocks 11 are uniformly arranged along one circle of the bottom end surface of the pressing plate 10, the number and the vertical positions of the pressing blocks 11 and the counter-extrusion dies 13 are consistent, the length of the pressing blocks 11 arranged along one circle of the turntable 2 is gradually increased, and the last pressing block 11 is the manufactured length of a workpiece.

As shown in fig. 2, the pushing mechanism 9 is a coaxial annular piece arranged on the outer side of the rotary table 2, the inner side of the pushing mechanism 9 is fixedly connected with the outer side wall of the rotary table 2 through a plurality of connecting rods 14, and a circle of pushing rings 91 corresponding to the number and positions of the cavities 131 and the pressing blocks 11 of the reverse extrusion die 13 are uniformly arranged on the pushing mechanism 9, and the pushing rings 91 drive the workpiece to be formed to be transferred in different cavities 131.

More specifically, as shown in fig. 2, the device further includes a material returning mechanism 12, the material returning mechanism 12 is an air cylinder, the output end of the material returning mechanism 12 faces the last cavity 131 towards the outside of the device and pushes the formed part away from the device, the material returning mechanism 12 is connected with a power supply and a main control panel, when the processing of the workpiece in the last cavity 131 is completed and moves to the top of the cavity 131 under the cooperation of the demoulding mechanism, the material returning mechanism 12 can move the workpiece to the outside of the device and cooperate with a blanking collecting component to complete workpiece collection.

More specifically, as shown in fig. 4, the pushing mechanism 9 further includes a movable block 92, the pushing ring 91 opens towards the outside of the device, two sides of the opening of the pushing ring 91 are respectively provided with the movable block 92, one end of the movable block 92 is rotatably connected with the main body of the pushing mechanism 9 through a hinge 93, a first reset spring 94 for driving the movable block 92 to reset is further connected between the movable block 92 and the main body of the pushing mechanism 9, on the basis of the above-mentioned material returning mechanism 12, the outside of the pushing ring 91 is opened to enable the workpiece to smoothly withdraw, on the basis, the movable block 92 is arranged to block the workpiece in the state of not returning, so as to avoid falling out of the device in the movement of the workpiece, in the state of returning, the two movable blocks 92 are opened to complete returning, and at the same time, the first reset spring 94 drives the movable block 92 to reset after the returning is completed.

More specifically, as shown in fig. 5, a circle of limiting groove 132 which is obliquely arranged above and is in smooth transition with the top end surface of the pushing mechanism 9 is arranged at the bottom opening of the cavity 131, the limiting groove 132 has the functions of facilitating demolding, guiding the workpiece when the workpiece is transferred to the upper side of the cavity 131, and enabling the edge of the opening in smooth transition to facilitate the pushing ring 91 of the pushing mechanism 9 to move the workpiece without jamming.

More specifically, as shown in fig. 1, a support column 3 is arranged at the top of a base 1, a rotary connecting seat 4 rotationally connected with the top of the support column 3 is arranged at the middle position of the bottom of a rotary table 2, a rotary shaft 5 is vertically arranged in the support column 3, the bottom of the rotary shaft 5 is fixed at the bottom of the rotary table 2 and coaxially arranged with the rotary shaft, a driven wheel 6 is connected to the lower end of the rotary shaft 5, a motor 7 is arranged on the side wall of the support column 3, the output end of the motor 7 penetrates through the side wall of the support column 3, a driving wheel 8 meshed with the driven wheel 6 is arranged at the end of the output end of the support column 3, the motor 7 is a stepping motor and is connected with a power supply and a main control panel of the device, the stepping motor can be matched with a displacement sensor to be used, when a workpiece arrives, the stepping motor does not work, after the workpiece is extruded, the motor 7 works and drives a pushing ring 91 on a pushing mechanism 9 to drive the workpiece to enter the next position, the displacement sensor receives a next workpiece die-in signal, and the motor 7 stops working to complete one-time transfer work.

The device is suitable for reverse extrusion molding of the metal shaft piece, and can rapidly extrude and mold the metal hollow shaft piece in a rotary assembly line mode, compared with the situation that the existing difficult-to-deform metal material can be extruded only by heating after being manufactured, the device can rapidly transfer the metal piece in extrusion dies of different levels, the temperature can not be lower than the final forging temperature in the process of forming a workpiece, a large amount of time is saved, the metal piece forming efficiency is improved, meanwhile, a material returning mechanism is arranged, the material returning is convenient, the structure is reasonable, and the practicability is strong.

It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims

1. A reverse extrusion die device for hard-to-deform metals, characterized in that:

comprising a base (1);

A turntable (2) and a driving mechanism, wherein the turntable (2) and the driving mechanism are both arranged on the top of the base (1), and the driving mechanism drives the turntable (2) to rotate horizontally on the top of the base (1);

A reverse extrusion die (13), wherein a plurality of reverse extrusion dies (13) are arranged on the top of the turntable (2) and around the turntable (2); the reverse extrusion die (13) comprises a mold cavity (131), an extrusion block (133) of the mold cavity (131), and a workpiece demoulding mechanism;

The pressing plate (10) and the pressing block (11), the pressing plate (10) and the turntable (2) are coaxially arranged, and the middle of the top of the pressing plate (10) is connected to the output end of the extruder; the pressing blocks (11) are evenly arranged along the bottom end surface of the pressing plate (10), the number and vertical position of the pressing blocks (11) and the counter-extrusion die (13) are consistent, the length of the pressing blocks (11) arranged along the turntable (2) gradually increases, and the last pressing block (11) is the finished length of the workpiece;

The push mechanism (9) is a coaxial annular member arranged outside the turntable (2); the inner side of the push mechanism (9) is fixedly connected to the outer wall of the turntable (2) via a plurality of connecting rods (14); the push mechanism (9) is evenly arranged with push rings (91) corresponding to the number and position of the cavities (131) and the pressing blocks (11) of the reverse extrusion die (13), and the push rings (91) drive the workpiece to be formed to transfer between different cavities (131).

2. The difficult-to-deform metal reverse extrusion die device according to claim 1 is characterized in that it also includes a material return mechanism (12), wherein the material return mechanism (12) is a cylinder, and the output end of the material return mechanism (12) faces the last cavity (131) outside the device and pushes the molded part away from the device.

3. The difficult-to-deform metal reverse extrusion die device according to claim 2 is characterized in that the pushing mechanism (9) also includes a movable block (92), the pushing ring (91) is open to the outside of the device, and movable blocks (92) are arranged on both sides of the opening of the pushing ring (91), and one end of the movable block (92) is rotatably connected to the main body of the pushing mechanism (9) through a hinge (93); a first return spring (94) for driving the movable block (92) to return to its original position is also connected between the movable block (92) and the main body of the pushing mechanism (9).

4. The difficult-to-deform metal reverse extrusion die device according to claim 1 is characterized in that a support column (3) is arranged on the top of the base (1); a rotating connection seat (4) rotatably connected to the top of the support column (3) is arranged at the middle position of the bottom of the turntable (2); a rotating shaft (5) is vertically installed inside the support column (3), and the bottom of the rotating shaft (5) is fixed to the bottom of the turntable (2) and is coaxially arranged therewith; a driven wheel (6) is connected to the lower end of the rotating shaft (5); a motor (7) is installed on the side wall of the support column (3), the output end of the motor (7) passes through the side wall of the support column (3), and a driving wheel (8) meshing with the driven wheel (6) is installed at the output end of the support column (3).

5. The reverse extrusion die device for difficult-to-deform metal according to claim 1 is characterized in that the reverse extrusion die (13) further comprises a sleeve (134), a movable groove (135), a connecting column (136) and a second return spring (137), the sleeve (134) being vertically fixed to the bottom of the extrusion block (133) and being coaxially arranged with the extrusion block (133), the sleeve (134) being hollow and having an opening at the bottom; the sleeve (134) being slidably installed in the movable groove (135) arranged at the bottom of the cavity (131), a connecting column (136) being vertically installed at the bottom of the inner wall of the movable groove (135), the top of the connecting column (136) passing through the sleeve (134), and the outside of the connecting column (136) being also provided with a second return spring (137) for driving the sleeve (134) and the extrusion block (133) to return to their original position.

6. The reverse extrusion die device for difficult-to-deform metals according to claim 3, characterized in that a limiting groove (132) is arranged obliquely upward and smoothly transitions with the top surface of the pushing mechanism (9) around the bottom opening of the cavity (131).