CN112974709B

CN112974709B - Quick-change die carrier special for aluminum alloy forging

Info

Publication number: CN112974709B
Application number: CN202110253749.7A
Authority: CN
Inventors: 汪敏; 包建; 姜海涛; 张伟华
Original assignee: Zhejiang Sot Heavy Industry Technology Co ltd
Current assignee: Zhejiang Sot Heavy Industry Technology Co ltd
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2023-07-18
Anticipated expiration: 2041-03-09
Also published as: CN112974709A

Abstract

The invention relates to the technical field of forging dies, in particular to a special quick-change die carrier for aluminum alloy forging, which comprises an upper die carrier and a lower die carrier, wherein the upper die carrier and the lower die carrier both comprise a main die carrier and a sub-die carrier, the main die carrier comprises a main die plate, four side faces of the sub-die carrier are a side face a, a side face b, a side face c and a side face d in sequence, the side face d is an inclined face inclined towards the middle part of the sub-die carrier, the main die carrier is provided with positioning blocks for respectively abutting against the side face a and the side face b, the main die carrier is further provided with a horizontal ejector rod for abutting against the side face c along the horizontal direction, and the main die carrier is further provided with a pressing device for abutting against the side face d.

Description

Quick-change die carrier special for aluminum alloy forging

Technical Field

The invention relates to the technical field of forging dies, in particular to a special quick-change die carrier for aluminum alloy forging.

Background

Forging is a common machining process, in which a material is plastically deformed in a forging die by the action of an external force by forging, thereby obtaining a part of a desired shape and size. The forging die is divided into a hot forging die, a warm forging die and a cold forging die according to different forging temperatures, and the die is required to be continuously heated during the hot forging of the aluminum alloy, so that the temperature of the blank is maintained. Generally correspond a plurality of forging mould in order to change different products of processing or process to a forging equipment, in order to standardize structure, size and the dismantlement convenience of mould, can install the die carrier on the forging equipment especially the press and regard as the support, for quick installation dismantlement die carrier, the die carrier divide into main die holder, sub-die holder, main die holder installs on forging equipment, is connected sub-die holder and mould earlier fixedly, then together sends the mould to forging equipment along with sub-die holder, fixes sub-die holder on main die holder, and vice versa during the dismantlement.

The main die holder of the existing die holder is generally of a 'back' shape frame structure, and the sub die holder is positioned and installed in the inner cavity of the 'back' shape frame; or the upper die holder and the lower die holder are of U-shaped structures, and the sub die holders are positioned and installed in the U-shaped cavity. For the 'back' shape frame structure or the 'U' shape structure, the die holder is required to adopt a free forging block which is integrally forged during processing, and redundant metal in the 'back' shape or the 'U' shape frame is removed by large cutting amount, so that the blank input cost is high, the material removal amount is large, the processing efficiency is low, the working faces of the upper main die seat and the lower main die seat are arranged on the core part of the free forging block, the mechanical property of the core part of the free forging block is difficult to ensure by heat treatment, and the size of the bottom surface of the inner cavity of the 'back' shape or the 'U' shape main die seat is more than 500mm from the upper surface, so that the forging equipment needs longer forging stroke.

Secondly, in the aspect of quick replacement of the upper sub-die holder and the lower sub-die holder, in order to ensure the installation accuracy of the sub-die holders, a positioning key is mainly arranged between the main die holder and the sub-die holders in the prior art, and the installation and the positioning of the sub-die holders are ensured to be accurate through the positioning key. The mode makes when quick change, all need have accurate location between sub die holder and the quick change device, between quick change device's the sending stop position and the forging equipment, just can guarantee that sub die holder send into behind the main die holder, sub die holder's location key hole and the accurate cooperation of the locating key of main die holder, this has all put forward very high requirement to quick change device, transfer device's precision, leads to current quick change device structure complicacy, expense.

In addition, the quick-change device in the prior art is generally provided with the track grooves on the main die holder for the lower die holder, and the quick-change guide rail or the quick-change roller is arranged in the track grooves, so that the sub die holder can be quickly fed in and pulled out, and the sub die holder is positioned by arranging the positioning key after being fed in, so that the die changing efficiency is reduced, two track grooves which are communicated front and back are required to be formed in the lower main die holder, stress concentration is caused in the die holder in the use process due to the formation of the track grooves, the die holder is easy to crack at the forming position of the track grooves, and the service life of the die holder is reduced.

In addition, for the connection of main die holder and submodule seat, prior art mainly adopts bolted connection or the tensioning mode about the clamp, and this mode operation is very loaded down with trivial details, influences die changing efficiency.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a special quick-change die carrier for aluminum alloy forging, which has a scientific structure, can quickly detach and replace a sub-die seat so as to finish die changing, and is accurate in positioning and reliable in connection.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a special quick change die carrier of aluminum alloy forging, its includes die carrier, lower die carrier, go up die carrier and lower die carrier and all include master die holder, sub-die holder, the master die holder includes the master template, four sides of sub-die holder are side a, side b, side c, side d in proper order, side d be to sub-die holder middle part slope, the master template is provided with and is used for contradicting respectively side a, side b's locating piece, the master template still is provided with and is used for contradicting along the horizontal direction side c's horizontal ejector pin, the master template still is provided with and is used for contradicting side d's closing device, closing device with the master template can dismantle and be connected.

Preferably, the compressing device comprises a front locking oil cylinder, a compressing lever and a supporting seat, wherein the front locking oil cylinder, the compressing lever and the supporting seat are arranged in the main template in the vertical direction and are used for supporting the middle of the compressing lever, a lifting rod of the front locking oil cylinder is hinged with one end of the compressing lever, and an inclined plane for abutting against the side surface d is arranged at the other end of the compressing lever.

Preferably, the sub-die seat is provided with two roller holes on the side surface a and the side surface c respectively, rollers are arranged in the roller holes, and roller avoiding grooves are formed in positions, corresponding to the main die plates, of the rollers after the sub-die seat is installed.

Preferably, a heat insulation backing plate is arranged between the main template and the sub-die seat.

Preferably, a cushion plate accommodating cavity for accommodating the heat insulation cushion plate is formed in the middle of the main template, and the surface of the heat insulation cushion plate is not beyond the surface of the main template.

Preferably, the roller avoiding groove is formed in the surface of the heat insulation base plate.

Preferably, the main die holder is further provided with a guide post, the guide post comprises an upper guide post and a lower guide post, the upper guide post is connected with the upper die frame, the lower guide post is connected with the lower die frame, and the lower ends of the upper guide post and the lower guide post are respectively triangular prisms capable of being spliced into rectangular blocks.

Preferably, the horizontal ejector rod is replaced by the pressing device, and the side surface c is an inclined surface inclined towards the middle part of the sub-die seat.

Preferably, the horizontal ejector rod comprises an oil cylinder fixing seat and a side locking oil cylinder, the oil cylinder fixing seat is fixedly connected with the main template, and the side locking oil cylinder is arranged in the oil cylinder fixing seat along the horizontal direction and can extend out towards the direction of the side surface c.

Preferably, the positioning block is two independent rectangular blocks or L-shaped connected into a whole.

Preferably, the positioning blocks comprise positioning plates and positioning plate fixing seats, the positioning plate fixing seats are fixedly connected with the main template, the positioning plates are fixedly connected with the positioning plate fixing seats, and the positioning plates are located between the positioning plate fixing seats and the sub-templates.

Preferably, a groove is formed between the side surface d and the front locking cylinder of the main template, the supporting seat is arranged in the groove, the supporting seat does not exceed the surface of the main template, and a connecting seat which protrudes downwards and is used for being hinged with the supporting seat is arranged in the middle of the pressing lever.

The beneficial effects of the invention are as follows: 1. the quick-change die can be conveniently replaced, and the die is detached along with the sub-die seat, so that the operation is convenient and the positioning is accurate during the detachment. 2. The main die plate has simple structure, small thickness, less cutting amount and high processing efficiency. 3. The main die holder and the sub die holder are positioned by a positioning block abutting against the side surface of the sub die holder without using a positioning key, and are pressed by a pressing device. 4. The sub-die seat of the lower die carrier can be conveniently pushed in and out through the roller, so that the service life of the die is prolonged.

Drawings

FIG. 1 is an exploded schematic view of a special quick change die carrier for aluminum alloy forging of the invention.

FIG. 2 is a schematic cross-sectional view of the die carrier of the invention for forging aluminum alloy.

Fig. 3 is a schematic structural view of the lower mold frame of the present invention.

Fig. 4 is an exploded schematic view of the lower mold frame of fig. 3.

Fig. 5 is a schematic structural view of the compressing apparatus of the present invention.

Fig. 6 is a partial enlarged view at a in fig. 1.

Reference numerals illustrate:

1-die holder 11-side a

12-side b 13-side c

14-side d 2-main template

3-positioning block 31-positioning plate

32-locating plate fixing seat 4-horizontal ejector rod

41-cylinder fixing seat 42-side locking cylinder

5-compression device 51-front locking cylinder

52-hold-down lever 521-connecting seat

53-supporting seat 6-roller

7-heat insulation backing plate 8-guide post.

Detailed Description

The invention will now be described in further detail with reference to the drawings and the specific embodiments, without limiting the scope of the invention.

As shown in fig. 1 to 6, the special quick-change die carrier for aluminum alloy forging in this embodiment includes an upper die carrier and a lower die carrier, and the upper die carrier and the lower die carrier are similar in structure. The lower die carrier of the invention needs to send the sub die carrier 1 along the main die plate 2 and needs to carry out ejection, so the lower die carrier has a complex structure, and compared with the upper die carrier, the lower die carrier has more devices such as rollers, ejector rods and the like. The upper die frame and the lower die frame comprise a main die base and a sub die base 1, and the main die base comprises a main die plate 2. The exploded view of fig. 1 is shown from top to bottom: the main die holder of the upper die carrier, the sub die holder 1 of the lower die carrier and the main die holder of the lower die carrier. The die holder 1 of the lower die holder is provided with a roller 6 and a material returning top plate (two are shaped like Chinese character 'Feng'), and a roller avoiding groove and a push rod are correspondingly arranged on the heat insulation backing plate 7 below the die holder. The structure of the upper mold frame may be embodied in the lower mold frame, so only the lower mold frame will be described below.

For convenience of description, four sides of the sub-module 1 in the horizontal direction are sequentially denoted as a side a11, a side b12, a side c13 and a side d14, and the side d14 is an inclined plane inclined towards the middle of the sub-module 1, so that the inclined plane forms a wedge shape with a small upper part and a large lower part, and a pressing device 5 described below is convenient to press the sub-module in the horizontal and vertical directions. For the upper die carrier, the inclined surface is wedge-shaped with the lower part smaller and the upper part larger.

The positioning key is different from the positioning key in the prior art, the side surfaces a11 and b12 of the sub-die holder 1 are used for positioning, specifically, the main die plate 2 is provided with positioning blocks 3 respectively used for abutting against the side surfaces a11 and b12, the positioning blocks 3 can be two independent rectangular blocks, the pages can be L-shaped which are connected into a whole, and in the embodiment, the positioning blocks 3 are two independent rectangular blocks. The main template 2 is further provided with a horizontal ejector rod 4 for abutting against the side surface c13 along the horizontal direction, the main template 2 is further provided with a pressing device 5 for abutting against the side surface d14, and the pressing device 5 is detachably connected with the main template 2. Because closing device 5 can dismantle, locating piece 3, horizontal ejector pin 4 form a trilateral surrounding, the open thick location structure of U font of one side, can follow closing device 5's direction with the horizontal propelling movement of die holder 1 to approximate position, then install closing device 5, closing device 5 and horizontal ejector pin 4 push away die holder 1 to contradicting locating piece 3, have realized the fine positioning. For the upper die carrier, the U-shaped rough positioning structure of the bamboo can be directly loosened by the sub die holder 1, and then the fine positioning is performed by the pressing device 5 and the horizontal ejector rod 4.

Through the structure, the positioning block 3 and the horizontal ejector rod 4 are connected with the upper side face of the main template 2 through bolts, and the upper side face of the main template 2 is planar, so that the processing of the main template 2 is reduced, the upper side face of the main template 2 is not required to be processed into a 'back' or 'U' -shaped frame, and meanwhile, the thickness of the main template 2 can be reduced. Further, in order to avoid continuously heating the forging die in the aluminum alloy forging process, heat is transmitted from the sub die holder 1 to the forging equipment through the main die holder, damage is caused to the forging equipment, as shown in fig. 4, a heat insulation base plate 7 is arranged between the main die plate 2 and the sub die holder 1, in order to ensure that the upper side surface of the main die plate is planar, a base plate accommodating cavity for accommodating the heat insulation base plate 7 is formed in the middle of the main die plate 2, the upper surface of the heat insulation base plate 7 is coplanar with the upper surface of the main die plate 2, the sub die holder 1 of the lower die holder can slide along the heat insulation base plate 7 through the roller 6, and a roller avoiding groove is formed in the surface of the heat insulation base plate 7. For another embodiment without the heat-insulating pad 7, a roller avoiding groove is provided at a position of the main die plate 2 corresponding to the roller 6 after the sub die holder 1 is installed. The heat insulating pad 7 is made of a metal having good heat insulating property and a certain strength, and is preferably 5CrNiMo in the present invention.

As shown in fig. 1, 4 and 6, the side surface a11 and the side surface c13 of the die holder 1 are respectively provided with two roller holes, the rollers 6 are arranged in the roller holes, and the total number of the rollers 6 is four. When the sub-die holder 1 slides along the main die plate 2 and the heat insulation base plate 7, the roller 6 abuts against the main die plate 2 and rolls, when the roller 6 rolls to the roller avoiding groove, the sub-die holder 1 falls on the upper surface of the main die plate 2, and the roller 6 is not in contact with the main die plate 2. Therefore, the scheme reduces the need of forming a long chute on the surface of the main template 2, does not need to disassemble the roller, and does not contact with the main template 2 in the forging process so as not to bear pressure.

Further, as shown in fig. 2, 3 and 5, the above-mentioned compressing device 5 includes a front locking cylinder 51, a compressing lever 52, and a supporting seat 53 for supporting the middle part of the compressing lever 52, which are disposed in the main die plate 2 along the vertical direction, where a lifting rod of the front locking cylinder 51 is hinged to one end of the compressing lever 52, and an inclined plane for abutting against the side surface d14 is disposed at the other end of the compressing lever 52, and when the front locking cylinder 51 is jacked up, the compressing lever 52 pushes the sub-die holder 1 toward the side surface b12, and compresses the sub-die holder 1 on the upper surface of the main die plate 2. The front locking cylinder 51 adopts a high temperature resistant design, and can continuously and reliably work in a high temperature environment up to 160 ℃.

As shown in fig. 1 and 3, the main die holder is further provided with a guide post 8, the guide post 8 includes an upper guide post and a lower guide post, the upper guide post is connected with the upper die holder, the lower guide post is connected with the lower die holder, the guide post 8 is a square X guide post, that is, the lower ends of the upper guide post and the lower guide post are respectively triangular prisms, and when the die is closed, the upper guide post and the lower guide post are spliced into rectangular blocks. Different from the conventional cylindrical guide pillar and guide sleeve structure, the guide pillar is split, the production and processing of the guide pillar are more material-saving and environment-friendly, the guide precision is better, the replacement is convenient and quick, the guide pillar can be repeatedly used, and the expansion of the die holder body after the die holder is heated can not influence the precision of the guide gap due to the arrangement of the upper and lower guide surfaces at 45 degrees.

As shown in fig. 1 and 3, the horizontal ejector rod 4 includes an oil cylinder fixing seat 41 and a side locking oil cylinder 42, the oil cylinder fixing seat 41 is fixedly connected with the main template 2, and the side locking oil cylinder 42 is disposed in the oil cylinder fixing seat 41 along a horizontal direction and can extend toward the side surface c 13. The side locking cylinder 42 also adopts a high temperature resistant design, and can continuously and reliably work in a high temperature environment up to 160 ℃.

As a further embodiment, the horizontal carrier rod 4 may be replaced by the pressing device 5, in which case the side surface c13 is a slope inclined toward the middle of the sub-module 1.

As shown in fig. 4, the positioning blocks 3 each include a positioning plate 31 and a positioning plate fixing seat 32, the positioning plate fixing seats 32 are fixedly connected with the main template 2, the positioning plates 31 are fixedly connected with the positioning plate fixing seats 32, and the positioning plates 31 are located between the positioning plate fixing seats 32 and the sub-template 1. The positioning plate 31 can be replaced after being worn for multiple times, such as die holder wearing and tearing, when repairing the die, the die holder precision can also be guaranteed through adjusting the thickness of the positioning plate 31, and the use cost is lower.

As shown in fig. 4 and 5, the main die plate 2 is provided with a groove between the side surface d14 and the front locking cylinder 51, and the width of the groove is smaller than that of the side surface d14, so that the sub-die holder 1 cannot fall into the groove. The supporting seat 53 is fixedly arranged in the groove, the supporting seat 53 does not exceed the surface of the main template 2, and the middle part of the hold-down lever 52 is provided with a connecting seat 521 which protrudes downwards and is used for being hinged with the supporting seat 53. The hinge is a movable hinge, that is, as shown in fig. 5, the connecting seat 521 is J-shaped, the supporting seat 53 is provided with a semi-closed caulking groove, the front end of the connecting seat 521 is embedded in the caulking groove, the pressing lever 52 can rotate relative to the connecting seat 521, and the connecting seat 521 can be conveniently taken down and installed, and meanwhile, the connecting seat 521 cannot fall off when in use. The supporting seat 53 and the connecting seat 521 adopt a split structure, so that the replacement and maintenance are convenient, and the production and the processing are more convenient.

Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. Special quick change die carrier of aluminum alloy forging, its characterized in that: the mold comprises an upper mold frame and a lower mold frame, wherein the upper mold frame and the lower mold frame comprise a main mold seat and a sub mold seat (1), the main mold seat comprises a main mold plate (2), four side surfaces of the sub mold seat (1) are a side surface a (11), a side surface b (12), a side surface c (13) and a side surface d (14) in sequence, the side surface d (14) is an inclined surface inclined towards the middle part of the sub mold seat (1), the main mold plate (2) is provided with positioning blocks (3) which are respectively used for abutting against the side surface a (11) and the side surface b (12), the main mold plate (2) is further provided with a horizontal ejector rod (4) which is used for abutting against the side surface c (13) along the horizontal direction, the main mold plate (2) is further provided with a pressing device (5) which is used for abutting against the side surface d (14), and the pressing device (5) is detachably connected with the main mold plate (2).

The pressing device (5) comprises a front locking oil cylinder (51), a pressing lever (52) and a supporting seat (53) which are arranged in the main template (2) along the vertical direction, wherein the supporting seat (53) is used for supporting the middle part of the pressing lever (52), a lifting rod of the front locking oil cylinder (51) is hinged with one end of the pressing lever (52), and an inclined plane which is used for abutting against the side surface d (14) is arranged at the other end of the pressing lever (52);

the roller protection device is characterized in that two roller holes are respectively formed in the side face a (11) and the side face c (13) of the sub-die holder (1), rollers (6) are arranged in the roller holes, the main die plate (2) corresponds to the sub-die holder (1), roller avoidance grooves are formed in the positions of the rollers (6), and when the rollers (6) roll to the roller avoidance grooves, the sub-die holder (1) falls on the upper surface of the main die plate (2), and the rollers (6) are not in contact with the main die plate (2).

2. The quick change die carrier special for aluminum alloy forging according to claim 1, wherein: a heat insulation base plate (7) is arranged between the main template (2) and the sub-die seat (1).

3. The quick change die carrier special for aluminum alloy forging according to claim 2, wherein: the middle part of the main template (2) is provided with a cushion plate accommodating cavity for accommodating the heat insulation cushion plate (7), and the surface of the heat insulation cushion plate (7) does not exceed the surface of the main template (2).

4. The quick change die carrier special for aluminum alloy forging according to claim 2, wherein: the roller avoiding groove is formed in the surface of the heat insulation base plate (7).

5. The quick change die carrier special for aluminum alloy forging according to claim 1, wherein: the main die seat is further provided with a guide pillar (8), the guide pillar (8) comprises an upper guide pillar and a lower guide pillar, the upper guide pillar is connected with the upper die frame, the lower guide pillar is connected with the lower die frame, and the lower ends of the upper guide pillar and the lower guide pillar are respectively triangular prisms capable of being spliced into rectangular blocks.

6. The quick change die carrier special for aluminum alloy forging according to claim 1, wherein: the horizontal ejector rod (4) is replaced by the pressing device (5), and the side surface c (13) is an inclined surface inclined towards the middle part of the sub-die seat (1).

7. The quick change die carrier special for aluminum alloy forging according to claim 1, wherein: the horizontal ejector rod (4) comprises an oil cylinder fixing seat (41) and a side locking oil cylinder (42), the oil cylinder fixing seat (41) is fixedly connected with the main template (2), and the side locking oil cylinder (42) is arranged in the oil cylinder fixing seat (41) along the horizontal direction and can extend out to the direction of the side surface c (13).

8. The quick change die carrier special for aluminum alloy forging according to claim 1, wherein: the positioning block is in two independent rectangular blocks or integrally connected L shapes.

9. The quick change die carrier special for aluminum alloy forging according to claim 1, wherein: the positioning blocks comprise positioning plates (31) and positioning plate fixing seats (32), the positioning plate fixing seats (32) are fixedly connected with the main template (2), the positioning plates (31) are fixedly connected with the positioning plate fixing seats (32), and the positioning plates (31) are located between the positioning plate fixing seats (32) and the sub-template (1).

10. The quick change die carrier special for aluminum alloy forging according to claim 1, wherein: the main template (2) is provided with a groove between the side surface d (14) and the front locking oil cylinder (51), the supporting seat (53) is arranged in the groove, the supporting seat (53) does not exceed the surface of the main template (2), and the middle part of the pressing lever (52) is provided with a connecting seat (521) which protrudes downwards and is used for being hinged with the supporting seat (53).