CN211360527U

CN211360527U - Pressing device of forging die

Info

Publication number: CN211360527U
Application number: CN201922104311.3U
Authority: CN
Inventors: 许斌; 焉永才; 侯东波; 陈莉; 杜超
Original assignee: Liaoning 518 Internal Combustion Engine Fittings Co ltd
Current assignee: Liaoning 518 Internal Combustion Engine Fittings Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-08-28
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses a pressing device of a forging die, which comprises a lower die frame, a preforging lower die, a pressing block, an upper die frame, a preforging upper die, a wedge block, a bolt, a finish forging upper die and a finish forging lower die; the pre-forging lower die and the finish-forging lower die are fixed on the lower die frame through a pressing block, a wedge block and a bolt, and the pre-forging upper die and the finish-forging upper die are fixed on the upper die frame through the pressing block and the wedge block; the wedge block comprises an upper groove and a lower groove, the wedge block bolt for fixing the wedge block comprises an upper convex ring and a lower convex ring, the upper convex ring corresponds to the upper groove, and the lower convex ring corresponds to the lower groove; the upper groove and the lower groove are both provided with openings, and the width of each opening is larger than the diameter of the corresponding upper convex ring and the corresponding lower convex ring. The utility model has the advantages that: simple structure, simple manufacture drives the lift of voussoir through the rotation of voussoir bolt to the purpose of quick dismouting has been reached.

Description

Pressing device of forging die

Technical Field

The utility model relates to a bent axle processing technology field specifically is a forge mould, more specifically closing device says so.

Background

The hot die forging press is relatively advanced forging equipment, the production efficiency is high, the machining allowance of a forging piece is small, the hot die forging press becomes the preferred equipment of most forging pieces, the hot die forging press generally consists of a pre-forging station and a finish forging station, a pre-forging die and a finish forging die are connected with a die carrier through a pressing block and a wedge block, the die carrier is connected with an upper workbench and a lower workbench of the press, the die carrier needs to be moved out from a press workbench at first during each die replacement, then the upper die carrier is moved out from the lower die carrier and turned over for 180 degrees, the wedge block and the pressing block are detached and then replaced, and the wedge block and the pressing block are fastened on the die carrier through bolts, so that the die and the die carrier are tightly connected together, the tolerance accumulation is reduced without dislocation, and. However, in actual production, the mold needs to be preheated by 150 degrees, the bolt can be easily detached when the mold is replaced, but the wedge block is not easily detached due to the principle of thermal expansion and cold contraction, and the wedge block can be detached and replaced only after the mold is cooled. Some companies are equipped with two auxiliary die frames for replacing in order to shorten the time for replacing the dies, so that the time for replacing the dies can be greatly saved, but the auxiliary die frames of the large-tonnage hot die forging press are generally about 50 tons, are made of die steel, have very high cost and very long service life, and greatly increase the cost for manufacturing the auxiliary die frames.

Disclosure of Invention

In order to solve the technical problem, the utility model aims at providing a composite set of voussoir and bolt makes the bolt rotate the in-process voussoir and can remove along with the rotation of bolt to make voussoir and bolt break away from the mould simultaneously, reach the purpose of changing the outfit fast, reduce the input of reserve die carrier, reduce equipment frock cost. The specific technical scheme is as follows:

a pressing device of a forging die comprises a lower die frame, a pre-forging lower die, a pressing block, an upper die frame, a pre-forging upper die, a wedge block, a bolt, a finish-forging upper die and a finish-forging lower die; the pre-forging lower die and the finish-forging lower die are fixed on the lower die frame through a pressing block, a wedge block and a bolt, and the pre-forging upper die and the finish-forging upper die are fixed on the upper die frame through a pressing block, a wedge block and a bolt;

the wedge block comprises an upper groove and a lower groove, the wedge block bolt for fixing the wedge block comprises an upper convex ring and a lower convex ring, the upper convex ring corresponds to the upper groove, and the lower convex ring corresponds to the lower groove; the upper groove and the lower groove are both provided with openings, and the width of each opening is larger than the diameter of the corresponding upper convex ring and the corresponding lower convex ring;

the diameter of the upper convex ring is larger than that of the lower convex ring;

a screw head part is arranged above an upper convex ring of the wedge bolt, and a thread part is arranged below a lower convex ring;

the utility model has the advantages that: simple structure, simple manufacture drives the lift of voussoir through the rotation of voussoir bolt to the purpose of quick dismouting has been reached.

Drawings

FIG. 1 is a schematic view of the overall structure of a forging die;

FIG. 2 is a schematic view of the wedge and wedge bolt mating;

FIG. 3 is a top view of FIG. 2;

fig. 4 is a schematic structural view of a wedge bolt.

Detailed Description

The utility model is described in detail with the attached drawings, as shown in the figure, the utility model comprises a lower die frame 1, a preforging lower die 2, a pressing block 3, an upper die frame 4, a preforging upper die 5, a wedge block 6, a wedge block bolt 7, a final forging upper die 8 and a final forging lower die 9; the preforging lower die 2 and the finish forging lower die 9 are fixed on the lower die frame 1 through a pressing block 3 and a wedge block 6, and the preforging upper die 5 and the finish forging upper die 8 are fixed on the upper die frame 4 through the pressing block 3 and the wedge block 6;

the wedge 6 comprises an upper groove 61 and a lower groove 62, the wedge bolt 7 for fixing the wedge comprises an upper convex ring 71 and a lower convex ring 72, the upper convex ring 71 corresponds to the upper groove 61, and the lower convex ring 72 corresponds to the lower groove 62; the upper groove 61 is provided with an upper opening 64, the lower groove 62 is provided with a lower opening 63, and the widths of the upper opening and the lower opening are larger than the diameters of the corresponding upper convex ring and the corresponding lower convex ring;

because the stress conditions are different, the upper convex ring needs to transmit larger pressing force, and the lower convex ring mainly acts when the wedge block is lifted, so the diameter of the upper convex ring 71 is larger than that of the lower convex ring 72;

a head portion 74 is provided above the upper collar of the wedge bolt, and a thread portion 73 is provided below the lower collar.

When the die is assembled and disassembled, the wedge bolt and the wedge are assembled and are arranged in the die holder, and when the bolt is fastened or disassembled, the convex ring structures at the upper end and the lower end of the bolt drive the wedge to move up and down simultaneously, so that the purpose of synchronous assembling and disassembling and quick replacing is achieved.

Claims

1. A pressing device of a forging die comprises a lower die frame, a pre-forging lower die, a pressing block, an upper die frame, a pre-forging upper die, a wedge block, a bolt, a finish-forging upper die and a finish-forging lower die; the pre-forging lower die and the finish-forging lower die are fixed on the lower die frame through a pressing block, a wedge block and a bolt, and the pre-forging upper die and the finish-forging upper die are fixed on the upper die frame through the pressing block and the wedge block; the method is characterized in that: the wedge block comprises an upper groove and a lower groove, the wedge block bolt for fixing the wedge block comprises an upper convex ring and a lower convex ring, the upper convex ring corresponds to the upper groove, and the lower convex ring corresponds to the lower groove; the upper groove and the lower groove are both provided with openings, and the width of each opening is larger than the diameter of the corresponding upper convex ring and the corresponding lower convex ring.

2. The pressing device of a forging die as set forth in claim 1, wherein: the diameter of the upper convex ring is larger than that of the lower convex ring.

3. The pressing device of a forging die as set forth in claim 1, wherein: the upper portion of the upper convex ring of the wedge bolt is provided with a head portion, and the lower portion of the lower convex ring is provided with a thread portion.