CN219561110U - Stay wire shell forming die - Google Patents

Abstract

The utility model relates to the technical field of processing of parts of an electrified railway contact net, and particularly discloses a stay wire shell forming die which comprises an upper die and a lower die, wherein a first cavity which is jointed with a small end of the stay wire shell is formed in one end of the lower die, a second cavity which is jointed with a large end of the stay wire shell is formed in the other end of the upper die, cavities which are mirror symmetry with the lower die are formed in the upper die, a forming mandrel which is jointed with the small end of the stay wire shell in a penetrating way is inserted in one side of a die cavity after the upper die and the lower die are clamped in a sliding way, and a shaping die which is jointed with the large end of the stay wire shell in a penetrating way is inserted in the other side of the die cavity which is opposite to the forming mandrel in a sliding way. The die adopts the matching of the forming mandrel and the shaping die as well as the upper die and the lower die, can rapidly process the two ends of the intermediate blank body which is formed preliminarily into a formed stay wire shell with one large end and one small end, and meets the size requirement of the stay wire shell.

Description

Stay wire shell forming die

Technical Field

The utility model relates to the technical field of processing of parts of an electrified railway contact net, in particular to a stay wire shell forming die.

Background

The stay wire shell is also called as a double-lug wedge-shaped wire clamp, and the double-lug wedge-shaped wire clamp is a wire tightening part of a bearing rope, a contact wire and a stay wire on a contact net of an electrified railway at a terminal connection and a lower end connection part, and has the shape shown in figure 1, wherein one end is a big end, and the other end is a small end.

The prior art adopts steel casting to produce the stay wire shell, and the cast stay wire shell is easy to generate defects in the processes of air holes, shrinkage, stress concentration and the like, and the qualification rate of castings is only 65 percent, thereby reducing the use safety coefficient of parts and increasing the hidden trouble of accidents. In order to avoid the potential safety hazard caused by producing the stay wire shell in a casting production mode, the traditional casting mode is replaced by a pressure forming mode to manufacture the stay wire shell, the pressure forming comprises a water expansion mode, an extrusion mode and the like, wherein the water expansion mode is a water expansion mode, a water expansion die is matched with a multidirectional hydraulic press, a middle blank obtained by water expansion is shown in a figure 2, the middle blank is taken and sawn off, the middle blank is extruded by a matched shaping die to obtain the stay wire shell shown in a figure 1, the pressure forming can be performed through multiple extrusion, multiple extrusion needs to be matched with multiple shaping dies, the multiple shaping dies are used in succession to lead to long forming time of the stay wire shell, and the efficiency is low, so that the shaping die capable of enabling the stay wire shell to be formed at one time is needed.

Disclosure of Invention

The utility model aims to provide a stay wire shell forming die which solves the problem that the existing shaping die cannot form a stay wire shell at one time, so that the efficiency is low.

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

the utility model provides a shell forming die acts as go-between, includes mould and lower mould, one end is opened in the lower mould has the first cavity that laminates with the shell tip of acting as go-between, and the other end is opened in the upper mould has the second cavity that laminates with the shell tip of acting as go-between, go-between open have with lower mould mirror symmetry's cavity, go-between and lower mould die cavity one side after the compound die slide interlude have with the shaping dabber of shell tip interlude laminating of acting as go-between, the opposite die cavity opposite side slide interlude with shaping dabber have with the shell tip of acting as go-between interlude plastic mould of laminating.

The basic principle of the technical scheme is as follows: the method comprises the steps of transversely and fixedly mounting an upper die and a lower die on a multidirectional hydraulic press, placing a sawn intermediate blank into the lower die, clamping the upper die and the lower die, performing compression, simultaneously moving a forming mandrel and a shaping die towards the middle of a die cavity after clamping, and pressing two ends of the intermediate blank into a big end and a small end to obtain a complete stay wire shell.

The beneficial effect of this technical scheme lies in: compared with the prior art that the stay wire shell can be molded by adopting a plurality of sets of molding dies, the technical scheme can mold the stay wire shell at one time by only one set of molding die, and has high molding efficiency; but once just shaping, the deflection is big, so designed shaping dabber and plastic mould from the body both ends application of force, can effectively control deformation, this mould adopts shaping dabber and plastic mould and go up mould, lower mould cooperation, can be with the middle body both ends of preliminary shaping quick processing into one end big end and one end little, reaches the quick use standard of shell of acting as go-between.

Further, a positioning sleeve is tightly attached to one side of the lower die, and the forming mandrel firstly penetrates through the positioning sleeve and then is placed into the first cavity. The forming mandrel can be quickly and stably placed into the first cavity of the lower die through the positioning sleeve.

Further, a limiting opening matched with one end of the forming mandrel is formed in the center of the positioning sleeve. The limiting opening can limit the forming mandrel not to be separated from the positioning sleeve all the time.

Further, one side of the shaping die, which is opposite to the shaping mandrel, is provided with a shaping opening of the stay wire shell big end. One end of the stay wire shell is inserted into the forming opening and extruded to form a big end.

Further, the upper die and the lower die are square, the four corners of the lower die are provided with concave grooves which are concave downwards, and the four corners of the upper die are provided with bosses which are matched with the grooves. The upper die and the lower die are tightly clamped through the matching of the boss and the groove, so that the formation of a die joint is reduced to the greatest extent.

Further, the side walls of the upper die and the lower die are provided with strip-shaped positioning grooves with outward openings. The upper die and the lower die are horizontally fixed on the multi-directional hydraulic machine, and the strip-shaped positioning groove is used for being inserted into a stop block on the multi-directional hydraulic machine, so that the upper die and the lower die are fixed.

Drawings

FIG. 1 is a schematic diagram of a formed wire housing;

FIG. 2 is a schematic structural view of an intermediate blank;

FIG. 3 is a schematic view of a mold assembly;

fig. 4 is a schematic diagram of a split structure of a forming mold.

Reference numerals in the drawings of the specification include: the forming die comprises an upper die 1, a lower die 2, a groove 3, a boss 4, a first cavity 5, a second cavity 6, a forming mandrel 7, a positioning sleeve 8, a limiting opening 9, a shaping die 10, a forming opening 11 and a strip-shaped positioning groove 12.

Detailed Description

The following is a further detailed description of the embodiments:

the embodiment is basically as shown in figures 3-4:

the stay wire shell forming die is composed of a square upper die 1 and a square lower die 2, wherein the four corners of the lower die 2 are provided with concave grooves 3, the four corners of the upper die 1 are provided with bosses 4 matched with the grooves 3, as shown in fig. 4, the left end in the lower die 2 is provided with a first cavity 5 matched with the small end of the stay wire shell, the right end in the lower die 2 is provided with a second cavity 6 matched with the large end of the stay wire shell, the upper die 1 is internally provided with a cavity in mirror symmetry with the lower die 2, a forming mandrel 7 matched with the small end of the stay wire shell is slidably inserted into the first cavity 5 after the upper die 1 and the lower die 2 are clamped, the left side of the lower die 2 is tightly attached with a positioning sleeve 8, the forming mandrel 7 firstly penetrates through the positioning sleeve 8, and then An Chajin in the first cavity 5, the center of the positioning sleeve 8 is provided with a limiting opening 9 matched with one end of the forming mandrel 7, and the forming mandrel 7 is limited not to be separated from the positioning sleeve 8 all the time; a shaping die 10 opposite to the shaping mandrel 7 is slidably inserted in the second cavity 6 after the upper die 1 and the lower die 2 are assembled, one end of the shaping die 10 facing the shaping mandrel 7 is provided with a shaping opening 11 which is penetrated and attached with the big end of the stay wire shell, and the side walls of the upper die 1 and the lower die 2 are provided with strip-shaped positioning grooves 12 with outward openings.

The specific implementation process is as follows:

the strip-shaped positioning grooves 12 of the upper die 1 and the lower die 2 are matched with a stop block (not shown in the figure) on a multi-directional hydraulic machine, so that the upper die 1 and the lower die 2 are firmly arranged on the multi-directional hydraulic machine, a middle blank which is preliminarily molded in a water expansion die and shown in the figure 2 is taken out and sawed off, the sawed middle blank is arranged in the lower die 2, the multi-directional hydraulic machine is started to enable the upper die 1 and the lower die 2 to be combined and molded, the molding mandrel 7 passes through a limiting opening 9 of a positioning sleeve 8, the molding mandrel 7 and the shaping die 8 are simultaneously moved towards the middle of a die cavity after die assembly, the middle blank in the die cavity is pressed, deformation can be effectively controlled, two ends of the middle blank are pressed into a big end, a small end is pressed once, a complete wire-pulling shell is obtained, and the whole process is fast and efficient.

The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (6)

1. A stay wire shell forming die comprises an upper die and a lower die, and is characterized in that: one end is opened to have the first cavity of laminating with the shell tip of acting as go-between in the lower mould, and the other end is opened to have the second cavity of laminating with the shell tip of acting as go-between in the last mould, go-between in open have with lower mould mirror symmetry's cavity, put in the first cavity with the shaping dabber of shell tip interlude laminating of acting as go-between, put in the second cavity with the shaping mould of shell tip interlude laminating of acting as go-between, go-between and lower mould compound die and clamping shaping dabber and shaping mould can make the shaping of shell tip of acting as go-between and tip.

2. The stay wire housing forming die as claimed in claim 1, wherein: one side of the lower die is tightly adhered with a positioning sleeve, and the forming mandrel firstly penetrates through the positioning sleeve and then is placed into the first cavity.

3. The stay wire housing forming die according to claim 2, wherein: the center of the positioning sleeve is provided with a limiting opening which is matched with one end of the forming mandrel.

4. The stay wire housing forming die as claimed in claim 1, wherein: and one side of the shaping die, which is opposite to the shaping mandrel, is provided with a shaping port of the stay wire shell big end.

5. The stay wire housing forming die as claimed in claim 1, wherein: the upper die and the lower die are square, the four corners of the lower die are provided with concave grooves which are concave downwards, and the four corners of the upper die are provided with bosses which are matched with the grooves.

6. The stay wire housing forming die as claimed in claim 1, wherein: the side walls of the upper die and the lower die are provided with strip-shaped positioning grooves with outward openings.