CN111570696B

CN111570696B - Angle-adjustable large three-way die forging device and die forging method thereof

Info

Publication number: CN111570696B
Application number: CN202010447456.8A
Authority: CN
Inventors: 辛绍杰; 张栋; 张晓峰; 曹峰华; 任杰; 孙群
Original assignee: Shanghai Dianji University
Current assignee: Shanghai Dianji University
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-11-05
Anticipated expiration: 2040-05-25
Also published as: CN111570696A

Abstract

The invention discloses a large-scale three-way die forging device with an adjustable angle and a die forging method thereof. The main points of the technical solution are: a large-scale three-way die forging device with an adjustable angle, comprising a bottom plate, and the bottom plate is provided with a main Pushing device, first blocking device, second blocking device, first push-pull device, second push-pull device, third push-pull device, fourth push-pull device, main mold. The present invention can arbitrarily adjust the angle of the mold branch pipe within a certain range according to the actual production or the needs of special equipment, and make local length compensation to ensure the normal production of tees with various angles.

Description

Angle-adjustable large three-way die forging device and die forging method thereof

Technical Field

The invention relates to the field of large three-way die forging, in particular to an angle-adjustable large three-way die forging device and a die forging method thereof.

Background

The large Y-tee is one of the most important core components in the current thermal power generation and nuclear power generation systems, and its functions are used for transferring and shunting high-temperature and high-pressure steam, etc. With the continuous development of the power generation industry in China, higher and higher requirements are put forward on the production and manufacture of large-scale tees.

The current large Y-shaped three-way products mainly comprise two production modes of free forging and die forging. The free forging is generally performed by using a large hydraulic press, drilling holes in combination with machining, trimming and finally forming. The swaging is typically made using a die having a "Y" cavity, with a total of 3 holes in the Y die, one hole for advancing the punch 104, and two outer holes either directly closed or partially blocked inward with an insert to ensure that during extrusion, a cylindrical hole is extruded by the insert in both branches of the Y die to reduce the amount of post-machining drilling.

When the integral Y-shaped tee joint is forged in a free forging mode, the material utilization rate is low, the material is greatly wasted, the production cost is improved, the production period is long, and the method is not suitable for mass production.

When the die forging mode is adopted to forge the integral Y-shaped tee joint, the common die is provided with a fixed die cavity, one die can only produce one type of Y-shaped tee joint, and different tee joints cannot be produced by directly adjusting the angles of the branch die cavities. When a tee joint with a special angle is needed in practical application, a plurality of sets of dies with different branch angles are customized according to needs, and the cost is too high. In addition, because the tee joints with special angles are specially customized in small batches under many conditions, too many molds are not needed any more and can only be stored after the requirement is passed, and waste is caused.

Therefore, there is a need for an improvement in this technology to overcome the above-mentioned deficiencies.

Disclosure of Invention

The invention aims to provide an angle-adjustable large three-way die forging device and a die forging method thereof, which can randomly adjust the angle of a branch pipeline of a die within a certain range according to the requirements of actual production or special equipment, and compensate the length of a local part to ensure the normal production of three ways with various angles.

The technical purpose of the invention is realized by the following technical scheme: the large three-way die forging device with the adjustable angle comprises a bottom plate, wherein the bottom plate is provided with a main propelling device, a first plugging device, a second plugging device, a first push-pull device, a second push-pull device, a third push-pull device, a fourth push-pull device and a main die;

the main die comprises an upper cover plate, a first main vertical plate, a second main vertical plate, a first swinging vertical plate hinged to the end part of the first main vertical plate, a fourth swinging vertical plate hinged to the end part of the second main vertical plate, and two second swinging vertical plates and a third swinging vertical plate which are mutually hinged, wherein the first main vertical plate, the second main vertical plate, the first swinging vertical plate, the second swinging vertical plate, the third swinging vertical plate and the fourth swinging vertical plate surround a Y-shaped cavity in a surrounding manner, the Y-shaped cavity is divided into a main cavity and two branch cavities, the first swinging vertical plate, the second swinging vertical plate, the third swinging vertical plate and the fourth swinging vertical plate are vertically arranged in the axial direction in a rotating manner, and the first main vertical plate and the second main vertical plate are fixedly connected to the bottom plate;

the main propelling device comprises a propelling main machine box body fixedly connected to the bottom plate, a propelling hydraulic push rod arranged on the propelling main machine box body, a push plate arranged on the propelling hydraulic push rod and a punch head arranged on the push plate, the moving direction of the propelling hydraulic push rod moves towards the length direction of the first main vertical plate, and the punch head can be inserted into the main cavity;

the first plugging device comprises a plugging chassis arranged on the bottom plate, a plugging host box body which is arranged on the plugging chassis and rotates relative to the plugging chassis, a plugging rotating shaft connected between the plugging chassis and the plugging host box body, a plugging hydraulic push rod arranged on the plugging host box body, a plugging plate arranged at one end, far away from the plugging host box body, of the plugging hydraulic push rod, and a plug arranged on the plugging plate and capable of being arranged between the first swing vertical plate and the second swing vertical plate in a penetrating manner, wherein the plugging plate is rotatably connected to the plugging hydraulic push rod, and the axial rotating directions of the plugging plate and the plugging host box body are both vertically arranged; the structure of the second plugging device is consistent with that of the first plugging device, and a plug in the second plugging device can be arranged between the third swinging vertical plate and the fourth swinging vertical plate in a penetrating manner;

the first push-pull device comprises a push-pull chassis arranged on the bottom plate, a push-pull host box body arranged on the push-pull chassis and rotating relative to the push-pull chassis, a push-pull rotating shaft connected between the push-pull chassis and the push-pull host box body, and a push-pull hydraulic push rod arranged on the push-pull host box body, wherein one end of the push-pull hydraulic push rod, far away from the push-pull host box body, is rotatably connected to the side wall of the first swinging vertical plate and drives the first swinging vertical plate to rotate relative to the first main vertical plate, and the axial direction of rotation of the push-pull host box body is vertically arranged; the structures of the second push-pull device, the third push-pull device and the fourth push-pull device are consistent with the structure of the first push-pull device, and push-pull hydraulic push rods of the second push-pull device, the third push-pull device and the fourth push-pull device are respectively connected with the fourth swinging vertical plate, the second swinging vertical plate and the third swinging vertical plate.

The invention is further provided with: the push-pull hydraulic push rod is provided with a connecting piece at one end far away from the push-pull main machine box body, the connecting piece is rotatably connected with a sliding block, and the first swinging vertical plate, the second swinging vertical plate, the third swinging vertical plate and the fourth swinging vertical plate are all provided with sliding grooves for sliding corresponding to the sliding block.

The invention is further provided with: the first swing vertical plate is connected with a movable plate which can stretch out and draw back relative to the first swing vertical plate in a sliding mode, a groove for the movable plate to stretch out and draw back is formed in the first swing vertical plate, the first swing vertical plate is provided with a motor for driving the movable plate to stretch out and draw back, a gear is arranged at the output end of the motor, a rack meshed with the gear is arranged on the movable plate, the movable plate can be separated from the hinged end of the first swing vertical plate and the hinged end of the first main vertical plate in a back-to-back mode, and the structures of the second swing vertical plate, the third swing vertical plate and the fourth swing vertical plate are consistent with the structure of the first swing vertical plate.

The invention is further provided with: the end of the plugging plate, which is far away from the plug, is provided with a connecting bulge, the upper end face and the lower end face of the connecting bulge are both provided with a pin shaft which is vertically arranged, and the plugging hydraulic push rod is provided with an installation part which is rotatably connected with the pin shaft.

The invention is further provided with: impel hydraulic push rod and set up to a plurality of, a plurality of impels hydraulic push rod be around the drift equipartition and with the push pedal is connected.

The invention is further provided with: the push plate can be inserted between the first main vertical plate and the second main vertical plate, and two side walls of the push plate are attached to the opposite side walls of the first main vertical plate and the second main vertical plate.

The invention is further provided with: a die forging method of a large three-way die forging device with an adjustable angle comprises the following steps: step 1, adjusting the angles and the lengths of a first swinging vertical plate, a second swinging vertical plate, a third swinging vertical plate and a fourth swinging vertical plate in a main die;

step 2, heating a metal blank material to be extruded to 1200 ℃ in a heating furnace, and then clamping and placing the metal blank material into a main cavity formed by a first main vertical plate, a second main vertical plate and a bottom plate by a clamp;

step 3, closing the upper cover plate, and simultaneously starting the main propelling device, the first plugging device and the second plugging device to work; the lower surface of the upper cover plate covers the upper surfaces of the first main vertical plate, the second main vertical plate, the first swinging vertical plate, the second swinging vertical plate, the third swinging vertical plate and the fourth swinging vertical plate, and the top of the upper cover plate is pressed by an external press to prevent the upper cover plate from being pushed open or moving upwards in the process; a hydraulic mechanism in the main propelling device drives four propelling hydraulic push rods, a push plate, a punch and the like to move forwards, so that the front end face of the push plate is flush with the outer end face of the main cavity of the main die, the hydraulic mechanisms of the first plugging device and the second plugging device drive the front end face of the plugging plate to be attached and pressed with the outer end face of the corresponding branch cavity of the main die, and the plug extends into the corresponding branch cavity;

step 4, starting extrusion, driving four pushing hydraulic push rods, a push plate and a punch to move forwards by a hydraulic mechanism in the main propelling device, enabling the push plate and the punch to enter the main cavity, contacting and extruding a high-temperature metal material to deform the high-temperature metal material, enabling the material to flow to two branch cavities continuously after being extruded and deformed, filling the spaces of the branch cavities until the main propelling device is propelled forwards to a preset position, filling the main cavity and the branch cavities with the extruded metal material, and stopping continuous propelling;

and 5, after the metal is cooled, respectively driving a push plate, a punch, a blocking plate, a plug and the like of each hydraulic mechanism of the main pushing device, the first blocking device and the second blocking device to retreat away from a die cavity, moving the main pushing device, the blocking plate, the plug and the like to the outside of the main die, moving a pressing device at the top of an upper cover plate, moving the upper cover plate, taking out the extruded Y-shaped tee joint, transferring the Y-shaped tee joint to a machining area to perform further machining work such as drilling, reaming, finishing and the like, and finally completely forming the product.

The invention is further provided with: in the step 1, when the die forging of Y-shaped tee joints with different angles is needed, the first push-pull device, the second push-pull device, the third push-pull device and the fourth push-pull device start to work, a hydraulic mechanism in a push-pull host box drives a push-pull hydraulic push rod and a connecting piece to move forwards together, namely, a slide block is pushed forwards to force the slide block to slide towards the direction of the blocking plate in a track, and the corresponding first swinging vertical plate, the second swinging vertical plate, the third swinging vertical plate and the fourth swinging vertical plate rotate by taking the hinged ends thereof as centers and are adjusted to corresponding positions; a motor in the push-pull chassis drives the push-pull main machine box body to rotate through a push-pull rotating shaft, ensures that the first swing vertical plate, the second swing vertical plate, the third swing vertical plate and the fourth swing vertical plate are positioned and fixed at corresponding positions, and completes the adjustment of the positions of the two branch cavities relative to the main cavity; then motors in the first swinging vertical plate, the second swinging vertical plate, the third swinging vertical plate and the fourth swinging vertical plate work to drive the corresponding moving plates to move outwards to extend out corresponding lengths so as to ensure that the corresponding blocking plates cover the branch cavities;

the invention is further provided with: in step 4, after the angular positions of the first swing vertical plate, the second swing vertical plate, the third swing vertical plate and the fourth swing vertical plate are changed, the motor in the plugging chassis drives the plugging host box body to rotate by a corresponding angle, and then the hydraulic mechanism in the plugging host box body drives the plugging plate to attach and press the outer end face of the branch cavity.

In conclusion, the invention has the following beneficial effects:

when the extrusion die is used, a metal blank material to be extruded is heated to the temperature in a heating furnace, is placed into the main cavity, is covered with the upper cover plate and is fixed through an external press. The hydraulic mechanism in the main propelling device drives four propelling hydraulic push rods, the push plate, the punch and the like to move forwards, so that the front end face of the push plate is flush with the outer end face of the main cavity of the main die, the hydraulic mechanisms of the first plugging device and the second plugging device drive the front end face of the plugging plate to be attached and pressed with the outer end face of the corresponding branch cavity of the main die, and the plug extends into the corresponding branch cavity. Then, the four pushing hydraulic push rods, the push plate and the punch are driven by a hydraulic mechanism in the main pushing device to move forwards completely, so that the push plate and the punch enter the main cavity, contact and extrude the high-temperature metal material to deform the high-temperature metal material, the material flows into the two branch cavities continuously after being extruded and deformed to fill the spaces of the branch cavities until the main pushing device pushes the main pushing device to a preset position, the main cavity and the branch cavities are filled with the extruded metal material, the pushing is stopped, and the large tee joint is processed.

After the angular positions of the first swing vertical plate, the second swing vertical plate, the third swing vertical plate and the fourth swing vertical plate are adjusted, the end parts of the branch cavities are not neat, the blocking plate is difficult to block the end faces of the branch cavities, and the moving plate is driven by the corresponding motor to extend, so that the blocking plate can block the corresponding end faces of the branch cavities.

According to the method and the device, the angle of the die branch pipeline can be adjusted randomly within a certain range according to the requirements of actual production or special equipment, the length compensation is carried out on the local part, and the normal production of the tee joint with various angles is guaranteed. Therefore, a plurality of large Y-shaped tees with different branch angles can be produced by only one set of equipment, the production and manufacturing cost is reduced, and the working efficiency is improved.

Drawings

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is a plan view of embodiment 1;

FIG. 3 is a schematic view of embodiment 1 with the upper cover plate hidden;

FIG. 4 is a schematic view of a master mold;

FIG. 5 is a schematic view of a partial structure of a main mold;

FIG. 6 is a cross-sectional view of the slide and runner;

FIG. 7 is a schematic view of the mounting structure of the moving plate;

FIG. 8 is a schematic structural view of the operating principle of the moving plate;

FIG. 9 is a schematic view of a main propulsion apparatus;

FIG. 10 is a schematic view of a closure plate and plug;

FIG. 11 is a schematic view of a first occluding device;

FIG. 12 is a schematic view of a plugging chassis and a plugging rotating shaft;

figure 13 is a schematic view of a first push-pull device;

FIG. 14 is a schematic view of the push-pull chassis and the push-pull rotating shaft;

FIG. 15 is a schematic view of a large Y-site.

The corresponding part names indicated by the numbers in the figures: 000. a base plate; 100. a main propulsion device; 101. pushing the main machine box body; 102. propelling a hydraulic push rod; 103. pushing the plate; 104. a punch; 200. a first occlusion device; 201. plugging the main machine box body; 202. blocking the rotating shaft; 203. plugging the chassis; 204. plugging the hydraulic push rod; 205. a mounting member; 206. a pin shaft; 207. a connecting projection; 208. a blocking plate; 209. a plug; 300. a second occluding device; 400. a first push-pull device; 401. pushing and pulling the main machine box body; 402. pushing and pulling the rotating shaft; 403. pushing and pulling the chassis; 404. push-pull hydraulic push rod, 405, connecting piece; 500. a second push-pull device; 600. a third push-pull device; 700. a fourth push-pull device; 800. a main mold; 801. an upper cover plate; 802. a first main vertical plate; 803. a first swing vertical plate; 8031. a slider; 8032. a chute; 8033. moving the plate; 8034. a rack; 8035. a gear; 8036. a motor; 804. a second main vertical plate; 805. a second swing vertical plate; 806. a third swing vertical plate; 807. and a fourth swing vertical plate.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the invention is further described with reference to the figures and the specific embodiments.

Example 1: as shown in fig. 1 to 15, the large three-way die forging apparatus with adjustable angle according to the present invention includes a base plate 000, wherein the base plate 000 is provided with a main propulsion apparatus 100, a first plugging apparatus 200, a second plugging apparatus 300, a first push-pull apparatus 400, a second push-pull apparatus 500, a third push-pull apparatus 600, a fourth push-pull apparatus 700, and a main die 800.

The main mold 800 includes an upper cover plate 801, a first main vertical plate 802, a second main vertical plate 804, a first swing vertical plate 803 hinged to an end of the first main vertical plate 802, a fourth swing vertical plate 807 hinged to an end of the second main vertical plate 804, and two second swing vertical plates 805 and a third swing vertical plate 806 hinged to each other. First main riser 802, second main riser 804, first swing riser 803, second swing riser 805, third swing riser 806 and fourth swing riser 807 surround a Y-shaped channel, the Y-shaped channel is divided into a main cavity and two branch cavities, first swing riser 803, second swing riser 805, third swing riser 806 and fourth swing riser 807 rotate axially and are vertically arranged, and first main riser 802 and second main riser 804 are fixedly connected to bottom plate 000.

The main propulsion device 100 includes a propulsion main machine case 101 fixedly connected to the base plate 000, a propulsion hydraulic ram 102 provided to the propulsion main machine case 101, a thrust plate 103 provided to the propulsion hydraulic ram 102, and a punch 104 provided to the thrust plate 103. The moving direction of the hydraulic push rod 102 is pushed to move towards the length direction of the first main vertical plate 802, the push plate 103 and the punch 104 can be inserted into the main cavity, and two side walls of the push plate 103 are attached to the opposite side walls of the first main vertical plate 802 and the second main vertical plate 804. The propelling main machine box 101 is internally provided with a hydraulic mechanism for driving the propelling hydraulic push rod 102 to move. The number of the pushing hydraulic push rods 102 is four, and the four pushing hydraulic push rods 102 are uniformly distributed around the punch 104 and are connected with the push plate 103.

The first plugging device 200 includes a plugging chassis 203 disposed on the bottom plate 000, a plugging host box 201 disposed on the plugging chassis 203 and rotating relative to the plugging chassis 203, a plugging rotation shaft 202 connected between the plugging chassis 203 and the plugging host box 201, a plugging hydraulic push rod 204 disposed on the plugging host box 201, a plugging plate 208 disposed on one end of the plugging hydraulic push rod 204 away from the plugging host box 201, and a plug 209 disposed on the plugging plate 208 and capable of being disposed between the first swing vertical plate 803 and the second swing vertical plate 805. The blocking plate 208 is rotatably connected to the blocking hydraulic push rod 204, and the blocking plate 208 and the blocking main case body 201 are both vertically arranged in the axial direction of rotation. One end of the blocking plate 208, which deviates from the blocking head 209, is provided with a connecting protrusion 207, the upper end face and the lower end face of the connecting protrusion 207 are both provided with a pin shaft 206 which is vertically arranged, and the blocking hydraulic push rod 204 is provided with a mounting part 205 which is rotatably connected with the pin shaft 206. A motor which drives and controls the plugging main machine box body 201 to rotate is arranged in the plugging chassis 203 and has a self-locking function; the plugging main machine box body 201 mechanism is consistent with the structure of the pushing main machine box body 101, and a hydraulic mechanism for controlling the movement of the plugging hydraulic push rod 204 is also arranged. The structure of the second plugging device 300 is the same as that of the first plugging device 200, and the plug 209 in the second plugging device 300 can penetrate between the third swing vertical plate 806 and the fourth swing vertical plate 807.

When the extrusion die is used, a metal blank material to be extruded is heated to 1200 ℃ in a heating furnace, is placed into a main cavity, is covered with an upper cover plate 801 and is fixed through an external press. The hydraulic mechanism in the main propelling device 100 drives the four propelling hydraulic push rods 102, the push plate 103, the punch 104 and the like to move forwards, so that the front end face of the push plate 103 is flush with the outer end face of the main cavity of the main die 800, the hydraulic mechanisms of the first plugging device 200 and the second plugging device 300 drive and enable the front end face of the plugging plate 208 to be attached and pressed with the outer end face of the corresponding branch cavity of the main die 800, and the plug 209 extends into the corresponding branch cavity. Then, a hydraulic mechanism in the main propelling device 100 drives four propelling hydraulic push rods 102, a push plate 103 and a punch 104 to move forwards, so that the push plate 103 and the punch 104 enter the main cavity, contact and extrude a high-temperature metal material to deform the high-temperature metal material, the material is extruded and deformed and then continuously flows to two branch cavities to fill the spaces of the branch cavities until the main propelling device 100 is propelled forwards to a preset position, the main cavity and the branch cavities are filled with the extruded metal material, the continuous propelling is stopped, and the large tee joint is processed.

In order to conveniently process large tees with different angles, the large tees are adjusted through the first push-pull device 400, the second push-pull device 500, the third push-pull device 600 and the fourth push-pull device 700. And the first push-pull 400, the second push-pull 500, the third push-pull 600 and the fourth push-pull 700 have the same structure.

The first push-pull device 400 includes a push-pull chassis 403 disposed on the bottom plate 000, a push-pull main body case 401 disposed on the push-pull chassis 403 and rotating with respect to the push-pull chassis 403, a push-pull rotating shaft 402 connected between the push-pull chassis 403 and the push-pull main body case 401, and a push-pull hydraulic push rod 404 disposed on the push-pull main body case 401. The structure of the push-pull chassis 403 is the same as that of the plugging chassis 203, and the structure of the push-pull host box 401 is the same as that of the plugging host box 201. One end of the push-pull hydraulic push rod 404, which is far away from the push-pull main machine box 401, is rotatably connected to the side wall of the first swinging vertical plate 803 and drives the first swinging vertical plate 803 to rotate relative to the first main vertical plate 802, and the rotating axial directions of the push-pull main machine box 401 are both vertically arranged. A connecting piece 405 is arranged at one end of the push-pull hydraulic push rod 404, which is far away from the push-pull main machine box 401, the connecting piece 405 is rotatably connected with a sliding block 8031, and a sliding groove 8032 for sliding of the corresponding sliding block 8031 is formed in each of the first swing vertical plate 803, the second swing vertical plate 805, the third swing vertical plate 806 and the fourth swing vertical plate 807. The push-pull hydraulic push rods 404 of the second push-pull device 500, the third push-pull device 600 and the fourth push-pull device 700 are respectively connected with the fourth swinging vertical plate 807, the second swinging vertical plate 805 and the third swinging vertical plate 806.

In order to ensure that the blocking plate 208 can block the end surface of the branch cavity, the first swing vertical plate 803 is slidably connected with a moving plate 8033 which can stretch out and draw back relative to the first swing vertical plate 803, the first swing vertical plate 803 is provided with a slot for stretching out and drawing back the moving plate 8033, the first swing vertical plate 803 is provided with a motor 8036 which drives the moving plate 8033 to stretch out and draw back, the output end of the motor 8036 is provided with a gear 8035, the moving plate 8033 is provided with a rack 8034 which is meshed with the gear 8035, the moving plate 8033 can stretch out and draw back from the hinged end of the first swing vertical plate 803 and the first main vertical plate 802, and the structures of the second swing vertical plate 805, the third swing vertical plate 806 and the fourth swing vertical plate 807 are consistent with the structure of the first swing vertical plate 803. After the angular positions of the first swing vertical plate 803, the second swing vertical plate 805, the third swing vertical plate 806 and the fourth swing vertical plate 807 are adjusted, the end portions of the branch cavities are not neat, the blocking plate 208 is difficult to block the end surfaces of the branch cavities, and the moving plate 8033 is driven by the corresponding motor 8036 to extend, so that the blocking plate 208 can be ensured to block the corresponding end surfaces of the branch cavities.

Example 2: the die forging method of the large three-way die forging device with the adjustable angle is characterized in that: comprises the following steps: step 1, adjusting the angles and lengths of a first swing vertical plate 803, a second swing vertical plate 805, a third swing vertical plate 806 and a fourth swing vertical plate 807 in a main die 800;

step 2, heating a metal blank material to be extruded to 1200 ℃ in a heating furnace, and then clamping and placing the metal blank material into a main cavity formed by a first main vertical plate 802, a second main vertical plate 804 and a bottom plate 000 by a clamp;

step 3, closing the upper cover plate 801, and simultaneously starting the main propulsion device 100, the first plugging device 200 and the second plugging device 300 to work; the lower surface of the upper cover plate 801 covers the upper surfaces of a first main vertical plate 802, a second main vertical plate 804, a first swinging vertical plate 803, a second swinging vertical plate 805, a third swinging vertical plate 806 and a fourth swinging vertical plate 807, and the top of the upper cover plate 801 is pressed by an external press, so that the upper cover plate 801 is prevented from being pushed open or moving upwards in the process; a hydraulic mechanism in the main propelling device 100 drives four propelling hydraulic push rods 102, a push plate 103, a punch 104 and the like to move forwards, so that the front end face of the push plate 103 is flush with the outer end face of the main cavity of the main die 800, the hydraulic mechanisms of the first plugging device 200 and the second plugging device 300 drive and enable the front end face of the plugging plate 208 to be attached and pressed with the outer end face of the corresponding branch cavity of the main die 800, and the plug 209 extends into the corresponding branch cavity;

step 4, starting extrusion, wherein a hydraulic mechanism in the main propelling device 100 drives four propelling hydraulic push rods 102, a push plate 103 and a punch 104 to move forwards, so that the push plate 103 and the punch 104 enter the main cavity, contact and extrude a high-temperature metal material to deform the high-temperature metal material, the material flows into two branch cavities continuously after being extruded and deformed, the space of the branch cavities is filled until the main propelling device 100 is propelled forwards to a preset position, the main cavity and the branch cavities are filled with the extruded metal material, and the continuous propelling is stopped;

and 5, after the metal is cooled, the hydraulic mechanisms of the main propulsion device 100, the first blocking device 200 and the second blocking device 300 respectively drive the push plate 103, the punch 104, the blocking plate 208, the plug 209 and the like to retreat from the die cavity, move to the outside of the main die 800, remove the pressing device at the top of the upper cover plate 801, remove the upper cover plate 801, take out the extruded Y-shaped tee joint, transfer to a machining area to perform further machining operations such as drilling, reaming, finishing and the like, and finally, completely mold the product.

When the Y-shaped tee at different angles is swaged and the first swing vertical plate 803, the second swing vertical plate 805, the third swing vertical plate 806 and the fourth swing vertical plate 807 need to be adjusted. The first push-pull device 400, the second push-pull device 500, the third push-pull device 600 and the fourth push-pull device 700 start to work, and a hydraulic mechanism in the push-pull main machine box 401 drives the push-pull hydraulic push rod 402 and the connecting piece 405 to move forward, namely, the sliding block 8031 is pushed forward, so that the sliding block 8031 is forced to slide towards the direction of the blocking plate 208 in the track, and rotates and adjusts to the corresponding position by taking the hinged end of the corresponding first swing vertical plate 803, second swing vertical plate 805, third swing vertical plate 806 and fourth swing vertical plate 807 as the center; a motor in the push-pull chassis 403 drives the push-pull main machine box 401 to rotate through a rotating shaft, and ensures that the first swing vertical plate 803, the second swing vertical plate 805, the third swing vertical plate 806 and the fourth swing vertical plate 807 are positioned and fixed at corresponding positions, and the adjustment of the positions of the two branch cavities relative to the main cavity is completed. After the angular position of the branch cavity in the adjusted Y-shaped cavity is adjusted, the motors 8036 in the first swing vertical plate 803, the second swing vertical plate 805, the third swing vertical plate 806, and the fourth swing vertical plate 807 operate to drive the corresponding moving plate 8033 to move outward by a corresponding length, so as to ensure that the corresponding blocking plate 208 covers the branch cavity. Then, a motor in the plugging chassis 203 drives the plugging host box body 201 to rotate by a corresponding angle through a rotating shaft, and then a hydraulic mechanism in the plugging host box body 201 drives the plugging plate 208 to attach and press the outer end face of the branch cavity.

In this document, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the purpose of clarity and convenience of description of the technical solutions, and thus, should not be construed as limiting the present invention.

As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A large-scale three-way die forging device with adjustable angle, comprising a bottom plate (000), characterized in that: the bottom plate (000) is provided with a main propulsion device (100), a first blocking device (200), a two blocking devices (300), a first push-pull device (400), a second push-pull device (500), a third push-pull device (600), a fourth push-pull device (700), and a main mold (800);

The main mold (800) includes an upper cover plate (801), a first main vertical plate (802), a second main vertical plate (804), and a first swing vertical plate hinged on the end of the first main vertical plate (802). plate (803), a fourth swinging upright (807) hinged to the end of the second main upright (804), two second swinging uprights (805) and a third swinging upright (806) hinged to each other , the first main vertical plate (802), the second main vertical plate (804), the first swing vertical plate (803), the second swing vertical plate (805), the third swing vertical plate (806) and the fourth The swing vertical plate (807) encloses a Y-shaped cavity, and the Y-shaped cavity is divided into a main cavity and two branch cavities. The first swing vertical plate (803) and the second swing vertical plate (805) , The third swinging vertical plate (806) and the fourth swinging vertical plate (807) are arranged vertically in the rotational axis, and the first main vertical plate (802) and the second main vertical plate (804) are fixedly connected to the the bottom plate (000);

The main propulsion device (100) comprises a propulsion main engine case (101) fixedly connected to the bottom plate (000), a propulsion hydraulic push rod (102) arranged in the propulsion main engine case (101), The pushing plate (103) of the pushing hydraulic push rod (102) and the punch (104) arranged on the pushing plate (103), the moving direction of the pushing hydraulic push rod (102) is towards the first main vertical plate (802) moves in the length direction, and the punch (104) can be inserted into the main cavity;

The first blocking device (200) comprises a blocking bottom plate (203) arranged on the bottom plate (000), a blocking bottom plate (203) provided on the blocking bottom plate (203) and rotating relative to the blocking bottom plate (203). A plugging host box (201), a blocking rotating shaft (202) connected between the blocking chassis (203) and the blocking host box (201), and a blocking rotating shaft (202) disposed on the blocking host box (201) ), a blocking plate (208) located at one end of the blocking hydraulic push rod (204) away from the blocking main engine box (201), and a blocking plate (208) provided on the blocking plate (208) and A plug (209) that can be inserted between the first swing vertical plate (803) and the second swing vertical plate (805), the blocking plate (208) is rotatably connected to the plugging hydraulic push rod (204) , and the rotation axis of the blocking plate (208) and the blocking main engine box (201) are vertically arranged; the structure of the second blocking device (300) is consistent with the structure of the first blocking device (200), And the plug (209) in the second blocking device (300) can be inserted between the third swing vertical plate (806) and the fourth swing vertical plate (807);

The first push-pull device (400) includes a push-pull chassis (403) disposed on the bottom plate (000), and a push-pull host chassis (403) disposed on the push-pull chassis (403) and rotating relative to the push-pull chassis (403). (401), a push-pull rotation shaft (402) connected between the push-pull chassis (403) and the push-pull host box (401), a push-pull hydraulic push rod (404) provided on the push-pull host box (401) One end of the push-pull hydraulic push rod (404) away from the push-pull host box (401) is rotatably connected to the side wall of the first swing vertical plate (803) and drives the first swing vertical plate (803) relative to the first swing vertical plate (803). A main vertical plate (802) rotates, and the axis of rotation of the push-pull host box (401) is vertically arranged; the second push-pull device (500), the third push-pull device (600), and the fourth push-pull device ( 700) The structure is the same as that of the first push-pull device (400), and the push-pull hydraulic push rods (404) of the second push-pull device (500), the third push-pull device (600), and the fourth push-pull device (700) are respectively the same as the fourth push-pull device (500). The swing vertical plate (807), the second swing vertical plate (805), and the third swing vertical plate (806) are connected.

2. A large-scale three-way die forging device with an adjustable angle according to claim 1, characterized in that: a connector (405) is provided at one end of the push-pull hydraulic push rod (404) away from the push-pull host box (401). ), the connecting piece (405) is rotatably connected with a slider (8031), the first swing vertical plate (803), the second swing vertical plate (805), the third swing vertical plate (806), the fourth swing vertical plate (806), the fourth swing vertical plate (803) Each of the vertical plates (807) is provided with a chute (8032) for sliding the corresponding slider (8031).

3. A large-scale three-way die forging device with an adjustable angle according to claim 2, characterized in that: the first swing vertical plate (803) is slidably connected with the first swing vertical plate (803). 803) A telescopic moving plate (8033), the first swing vertical plate (803) is provided with a slot for the moving plate (8033) to expand and contract, and the first swing vertical plate (803) is provided with a drive to drive the movement A motor (8036) for extending and retracting the plate (8033), the output end of the motor (8036) is provided with a gear (8035), the moving plate (8033) is provided with a rack (8034) meshing with the gear (8035), The moving plate (8033) can be extended away from the hinged end of the first swing vertical plate (803) and the first main vertical plate (802), the second swing vertical plate (805), the third swing vertical plate ( 806) and the structure of the fourth swinging vertical plate (807) are consistent with the structure of the first swinging vertical plate (803).

4. A large-scale three-way die forging device with adjustable angle according to claim 1, characterized in that: the end of the blocking plate (208) facing away from the plug (209) is provided with a connecting protrusion (207), The upper and lower end surfaces of the connecting protrusion (207) are provided with vertically arranged pin shafts (206), and the plugging hydraulic push rod (204) is provided with a mounting member that is rotatably connected to the pin shaft (206). (205).

5. A large-scale three-way die forging device with an adjustable angle according to claim 1, characterized in that: the propulsion hydraulic push rods (102) are arranged in several numbers, and the several propulsion hydraulic push rods (102) are in the form of a surrounding punch. The heads (104) are evenly distributed and connected with the push plate (103).

The large-scale three-way die forging device with adjustable angle according to claim 1, characterized in that: the push plate (103) can be inserted into the first main vertical plate (802) and the second main vertical plate ( 804 ), and the two side walls of the push plate ( 103 ) are attached to the opposite side walls of the first main vertical plate ( 802 ) and the second main vertical plate ( 804 ).

7. A die forging method using the adjustable angle large three-way die forging device according to any one of claims 1 to 6, characterized in that it has the following steps: Step 1, adjusting the main die (800) the angles and lengths of the first swing vertical plate (803), the second swing vertical plate (805), the third swing vertical plate (806) and the fourth swing vertical plate (807);

Step 2. Heat the metal blank material to be extruded to 1200 degrees Celsius in a heating furnace, and then clamp and place it on the first main vertical plate (802), the second main vertical plate (804) and the bottom plate (000) by clamps In the main cavity formed by;

Step 3. Cover and close the cover plate (801), the main propulsion device (100), the first blocking device (200), and the second blocking device (300) start to work at the same time; the lower surface of the upper cover plate (801) is covered to the The first main vertical plate (802), the second main vertical plate (804) and the first swing vertical plate (803), the second swing vertical plate (805), the third swing vertical plate (806), the fourth swing vertical plate On the upper surface of (807), the top of the upper cover (801) is pressed by an external press to prevent the upper cover (801) from being pushed open or moved upward during the process; the hydraulic mechanism in the main propulsion device (100) drives the The four hydraulic push rods (102), the push plate (103), and the punch (104) all move forward, so that the front end face of the push plate (103) is flush with the outer end face of the main cavity of the main die (800). The hydraulic mechanisms of the plugging device (200) and the second plugging device (300) are driven so that the front end surface of the plugging plate 208 is pressed against the outer end surface of the corresponding branch cavity of the main mold (800), and the plug 209 extends. into the corresponding branch cavity;

Step 4. Start extrusion, the hydraulic mechanism in the main propulsion device (100) drives the four propulsion hydraulic push rods (102), the push plate (103), and the punch (104) to all move forward, so that the push plate (103) The punch and punch (104) all enter the main cavity, contact and extrude the high-temperature metal material to deform it. After the material is extruded and deformed, it flows continuously to the two branch cavities, filling the space of the branch cavity until the main push The device (100) advances to a preset position, the extruded metal material fills the main cavity and the branch cavity, and stops advancing;

Step 5. After the metal is cooled, the hydraulic mechanisms of the main propulsion device (100), the first blocking device (200), and the second blocking device (300) drive the respective push plates (103), punches (104), After the blocking plate (208) and the plug (209) are withdrawn from the mold cavity, move to the outside of the main mold (800), remove the pressing device on the top of the upper cover plate (801), and remove the upper cover plate (801), Take out the extruded Y-shaped tee, transfer it to the machining area for further drilling and reaming, trimming and machining, and finally the product is fully formed.

8. The die forging method for a large tee die forging device with an adjustable angle according to claim 7, characterized in that: in step 1, when the Y-shaped tee of different angles needs to be die forged, the first push-pull device ( 400), the second push-pull device (500), the third push-pull device (600), and the fourth push-pull device (700) start to work, and the hydraulic mechanism in the push-pull host box (401) drives the push-pull hydraulic push rod (404), the connection The parts (405) move forward together, that is, push the slider (8031) forward, forcing the slider (8031) to slide in the direction of the blocking plate (208) in the track, corresponding to the first swing vertical plate (803), the second swing vertical plate (803) and the second swing vertical plate (803). The plate (805), the third swing vertical plate (806), and the fourth swing vertical plate (807) are rotated and adjusted to the corresponding positions with their hinge ends as the center; the motor in the push-pull chassis (403) pushes and pulls the rotating shaft (402) Drive the push-pull host box (401) to rotate, and ensure that the first swing vertical plate (803), the second swing vertical plate (805), the third swing vertical plate (806), and the fourth swing vertical plate (807) are positioned and aligned. Fix it in the corresponding position, and complete the adjustment of the position of the two branch cavities relative to the main cavity; then the first swing vertical plate (803), the second swing vertical plate (805), the third swing vertical plate (806) and the The motor (8036) in the four-swing vertical plate (807) works to drive the corresponding moving plate (8033) to move outward and extend out corresponding length to ensure that the corresponding blocking plate (208) covers and closes the branch cavity.

9. The die forging method for a large-scale three-way die forging device with adjustable angle according to claim 7, characterized in that: in step 3, since the first swing vertical plate (803) and the second swing vertical plate (805) ), the third swinging vertical plate (806) and the fourth swinging vertical plate (807) after the angular position changes, the motor in the blocking chassis (203) drives the blocking main engine box (201) to rotate by the corresponding angle, and then through the blocking The hydraulic mechanism in the main box (201) drives the blocking plate (208) to fit and press the outer end face of the branch cavity.