CN219425554U - Thin coal seam base column nest two-piece die structure - Google Patents

Abstract

The utility model provides a thin coal seam base column nest two-piece mold structure which comprises an upper mold and a lower mold, wherein an upper mold forming cavity is formed in the upper mold, a lower mold forming cavity is formed in the lower mold, ball socket forming surfaces are respectively arranged on two sides of the upper mold forming cavity, the ball socket forming surfaces on two sides are symmetrically arranged by taking the central line of the upper mold forming cavity as a symmetrical axis, sawing groove ribs are arranged at the central position of the bottom of the upper mold forming cavity, and flash bins which correspond up and down are formed at the edges of the upper mold forming cavity and the edges of the lower mold forming cavity. The die structure has high material utilization rate and can solve the problems of inconvenient operation, high positioning difficulty and high demolding difficulty of the existing die.

Description

Thin coal seam base column nest two-piece die structure

Technical Field

The utility model relates to the field of column sockets of hydraulic supports, in particular to a thin coal seam base column socket one-blank two-piece die structure.

Background

The base column nest is used as a key core bearing component of the hydraulic support of the coal mine, is mainly used on the base of the support, is an important bearing component of the hydraulic support, and is large in bearing load and high in manufacturing standard. At present, a base column nest is often machined by adopting a forging piece, the inclination angle of a thin coal seam support is larger, the height fall of two sides of the base column nest in the length direction is large, the existing die structure is one die, the misplacement force is large during forging, the latch wear is quicker, the misplacement of part of the forging piece is serious, the defect of meat caused by the misplacement is eliminated by welding repair in the follow-up process, the repair process is increased, the delivery period of the forging piece is prolonged, and the production cost of the forging piece is increased.

In order to solve the defect of offset of the forging, as shown in fig. 1, a die structure capable of forging into two base column nest forgings at one time appears in the prior art, the die structure of the scheme comprises an upper die and a lower die, two forging cavities are respectively formed on the upper die and the lower die, a left blank cavity and a right blank cavity which are separated and symmetrical with each other are formed, and flash bins are further arranged between the left blank cavity and the right blank cavity and on the side edges. The die symmetrically arranges the two forging cavities on the die, forges two products at one time, and counteracts each other by utilizing opposite directions of the offset forces of the two forging cavities which are separated from each other and symmetrically distributed. However, the scheme needs to simultaneously place and position two blanks for forging, and the difficulty of removing the oxide scale in the operation process and the difficulty of demolding operation of the forged piece after stopping forging are relatively high.

In order to solve the above problems, an ideal technical solution is always sought.

Disclosure of Invention

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a two mould structures of thin coal seam base post nest blank, includes mould and lower mould, last mould shaping die cavity has been seted up on the mould, lower mould shaping die cavity has been seted up on the lower mould, the both sides of going up mould shaping die cavity are provided with ball socket shaping face respectively, the both sides ball socket shaping face with go up the central line of mould shaping die cavity is symmetry axis symmetry setting, the bottom central point of last mould shaping die cavity puts and is provided with saw cut indent muscle, go up the border department of mould shaping die cavity with the overlap storehouse that corresponds from top to bottom has been seted up to the border department of lower mould shaping die cavity.

Based on the above, in order to be convenient for be connected with the forging hammer, the top of going up the mould is provided with the mould forked tail, the bottom of lower mould is provided with the lower mould forked tail.

Based on the above, for the convenience of guiding, the bottom surface of the upper die is provided with an upper die lock catch, and the top surface of the lower die is provided with a lower die lock catch matched with the upper die lock catch.

Based on the above, in order to offset the offset force of the forging cavity, the sizes of the ball socket molding surfaces at two sides of the upper mold molding cavity are the same.

Based on the above, the upper die forming cavity is an integral upper die forming cavity, the lower die forming cavity is an integral lower die forming cavity, and the space surrounded by the integral upper die forming cavity and the integral lower die forming cavity forms an integral die forging blank forming space.

Based on the above, the depth of the flash bin is smaller than the depth of the lower die forming cavity.

Compared with the prior art, the utility model has substantial characteristics and progress, in particular to a thin coal layer base column nest one-blank two-piece die structure, which is characterized in that the two thin coal layer base column nests are combined into one forging stock for production, so that the forging offset force is balanced by the forging, and only one integral forging stock is required to be positioned, the forging is not obviously offset after optimization, and steps and meat defects caused by the forging offset are avoided; the forging production efficiency is improved by about 50 percent. And the flash area is reduced after the two parts are combined and forged, the waste loss is reduced, and the material utilization rate is improved by 3%. Meanwhile, after forging, only one forging stock is required to be demolded and the oxide skin is removed, so that the demolding area and the area for removing the oxide skin are reduced, and the problems that in the prior art, when two products are forged at one time, the operation for removing the oxide skin is inconvenient, the positioning difficulty is high, and the operation difficulty of demolding of a forged piece after forging is stopped is high are avoided.

Further, according to the thin coal seam base column nest two-piece die structure, the upper die is connected with the upper hammer anvil of the die forging hammer through the upper die dovetail before die forging, the lower die dovetail is connected with the lower hammer anvil of the die forging hammer through the lower die dovetail, blanks are placed on the bottom surface of the lower die cavity during die forging, the upper die is driven by the upper hammer anvil to strike the blanks downwards, and when the upper die and the lower die are about to be closed, the upper die lock catch and the lower die lock catch are used for guiding, so that the center alignment of the upper die and the lower die is ensured. The forging is forged for a plurality of times, and the blank is filled in the cavity.

Furthermore, the thin coal seam base column nest one-blank two-piece die structure has low operation difficulty because only one blank is forged during die forging; and the mould structure does not need to separate the two cavities, so that the size of a module is reduced, and the cost of the mould is reduced.

Drawings

FIG. 1 is a schematic view of a longitudinal cross-sectional structure of a conventional thin coal seam base pillar nest one-mold two-cavity mold.

Fig. 2 is a schematic longitudinal sectional view of a thin coal seam base column nest two-piece mold structure provided by the utility model.

Fig. 3 is a schematic diagram of a transverse cross-sectional structure of a thin coal seam base column nest two-piece mold structure provided by the utility model.

Fig. 4 is a schematic diagram of an upper die structure of a thin coal seam base column nest two-piece die structure provided by the utility model.

Fig. 5 is a schematic diagram of a lower die structure of a thin coal seam base column nest two-piece die structure provided by the utility model.

Fig. 6 is a schematic diagram of a longitudinal section structure of a thin coal layer base column nest forging piece after forging a thin coal layer base column nest one-blank two-piece die structure provided by the utility model.

Fig. 7 is a schematic diagram of the transverse structure of a thin coal layer base column nest forging after forging a thin coal layer base column nest one-blank two-piece die structure provided by the utility model.

FIG. 8 is a schematic side view of a thin coal bed base post nest forging with a thin coal bed base post nest one-blank two-piece die structure.

In the figure: 1. ball socket molding surface; 2. an upper die, a left blank cavity; 4. a lower die; 5. a flash bin; 6. a right blank cavity; 7. dovetail of the upper die; 8. a lower die dovetail; 9. a lower die forming cavity; 10. an upper die lock catch; 11. forming a cavity by an upper die; 12. sawing and cutting groove pressing ribs; 13. a lower die lock catch; 14. a left ball socket; 15. a left blank; 16. a right ball socket; 17. a right blank; 18. sawing the slot.

Detailed Description

The technical scheme of the utility model is further described in detail through the following specific embodiments.

Example 1

The embodiment provides a thin coal seam base column nest two-piece mold structure, which comprises an upper mold 2 and a lower mold 4 as shown in fig. 2, 3, 4 and 5. An upper die forming cavity 11 is formed in the upper die 2, and a lower die forming cavity 9 is formed in the lower die 4. The ball socket molding surfaces 1 are respectively arranged on two sides of the upper mold molding cavity 11. The ball socket molding surfaces 1 on both sides are symmetrically arranged with the center line of the upper mold molding cavity 11 as a symmetry axis.

The center of the bottom of the upper die forming cavity 11 is provided with a sawing and grooving rib 12. Flash bins 5 which correspond up and down are arranged at the edge of the upper die forming cavity 11 and the edge of the lower die forming cavity 9.

Specifically, in this embodiment, in order to facilitate connection with the die hammer, the top of the upper die 2 is provided with an upper die dovetail 7, and the bottom of the lower die 4 is provided with a lower die dovetail 8. For guiding, an upper die lock catch 10 is arranged on the bottom surface of the upper die 2, and a lower die lock catch 13 matched with the upper die lock catch 10 is arranged on the top surface of the lower die 4.

In order to offset the offset force of the forging cavity, the size of the ball socket molding surfaces 1 positioned at both sides of the upper mold molding cavity 11 is the same.

In particular, as shown in fig. 2, the upper mold molding cavity 11 may be considered as a left green body cavity 3 and a right green body cavity 6 that are connected together. The left green body cavity 3 and the right green body cavity 6 are connected together to form an integral upper die forming cavity. The lower die forming cavity is an integral lower die forming cavity, and the space surrounded by the integral upper die forming cavity and the integral lower die forming cavity forms an integral die forging blank forming space. The depth of the flash bin 5 is smaller than that of the lower die forming cavity 9.

Fig. 6, 7 and 8 are schematic views of a thin coal seam base pillar nest forging structure formed by forging a thin coal seam base pillar nest two-piece mold structure according to the present embodiment, which includes a left blank 15 and a right blank 17 connected together back-to-back. A left ball socket 14 which is forged and pressed by the left ball socket molding surface 1 is arranged on one side of the left blank 15. A right ball socket 16 forged and pressed by the right ball socket molding surface 1 is arranged on one side of the right blank 17. And the left blank body and the right blank body are combined into an integral die forging blank, and a sawing groove 18 formed by forging and pressing the sawing groove rib 12 on the upper die is arranged in the center of the integral die forging blank. At a later time, the swaged blank may be sawn into two pieces according to the sawing slot 18.

Specifically, when the thin coal seam base column nest one-blank two-piece die structure provided by the utility model is utilized for forging, the specific operation steps are as follows:

firstly, before die forging, an upper die is connected with an upper hammer anvil through an upper die dovetail, a lower die dovetail is connected with a lower hammer anvil through a lower die dovetail, blanks are placed on the bottom surface of a lower die cavity during die forging, the upper die is driven by the upper hammer anvil to strike the blanks downwards, and when the upper die and the lower die are about to be closed, the upper die lock catch and the lower die lock catch are used for guiding, so that the alignment of the centers of the upper die and the lower die is ensured. The forging is forged for a plurality of times, and the blank is filled in the cavity. And cutting off the flash by using a press machine to finish die forging forming. After the die forging forming, the die forging blank is sawed into two pieces by a sawing machine.

According to the thin coal seam base column nest two-piece die structure provided by the embodiment, two thin coal seam base column nests are combined into one forging stock for production, so that the forging offset force is balanced by the forging, only one integral forging stock is needed to be positioned, the forging is not obviously offset after optimization, and steps and meat defects caused by repairing the forging offset are avoided; the forging production efficiency is improved by about 50 percent. And the flash area is reduced after the two parts are combined and forged, the waste loss is reduced, and the material utilization rate is improved by 3%. Meanwhile, after forging, only one forging stock is required to be demolded and the oxide skin is removed, so that the demolding area and the area for removing the oxide skin are reduced, and the problems that in the prior art, when two products are forged at one time, the operation for removing the oxide skin is inconvenient, the positioning difficulty is high, and the operation difficulty of demolding of a forged piece after forging is stopped is high are avoided.

Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present utility model and are not limiting; while the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present utility model or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the utility model, it is intended to cover the scope of the utility model as claimed.

Claims (6)

1. A thin coal seam base column nest two-piece die structure which is characterized in that: the novel plastic molding die comprises an upper die and a lower die, wherein an upper die molding cavity is formed in the upper die, a lower die molding cavity is formed in the lower die, ball socket molding surfaces are respectively arranged on two sides of the upper die molding cavity, the ball socket molding surfaces on two sides are symmetrically arranged by taking a central line of the upper die molding cavity as a symmetrical axis, sawing and pressing groove ribs are arranged at the central position of the bottom of the upper die molding cavity, and a flash bin which corresponds up and down is formed at the edge of the upper die molding cavity and the edge of the lower die molding cavity.

2. The thin seam base nest two-piece mold structure of claim 1, wherein: the top of the upper die is provided with an upper die dovetail, and the bottom of the lower die is provided with a lower die dovetail.

3. A thin seam base nest two piece mold structure as in claim 1 or 2 wherein: the bottom surface of the upper die is provided with an upper die lock catch, and the top surface of the lower die is provided with a lower die lock catch matched with the upper die lock catch.

4. A thin seam base nest two piece mold structure as in claim 3 wherein: the sizes of the ball socket molding surfaces positioned at two sides of the upper die molding cavity are the same.

5. The thin seam base nest two-piece mold structure of claim 4, wherein: the upper die forming cavity is an integral upper die forming cavity, the lower die forming cavity is an integral lower die forming cavity, and a space surrounded by the integral upper die forming cavity and the integral lower die forming cavity forms an integral die forging blank forming space.

6. The thin seam base nest two-piece mold structure of claim 5, wherein: the depth of the flash bin is smaller than that of the lower die forming cavity.