Connecting plate forging die

Abstract

The utility model relates to the field of railways, in particular to a connecting plate forging die which comprises an upper forging die and a lower forging die, a concave flash bin portion is arranged on the bottom face of the upper forging die, a plurality of concave upper cavities are formed in the center of the flash bin portion, and a convex bridge portion is arranged on the periphery of each upper cavity. The lower forging die is located under the upper forging die, a concave bin cavity is formed in the top face of the lower forging die, a plurality of concave lower cavities are formed in the center of the bin cavity, and the lower cavities are matched with the upper cavities in a one-to-one correspondence mode. The position of the die cavity is proper and reasonable, the structure of a forge piece and the space of a module are ingeniously utilized, the forge piece is easy to form during forging, raw materials are saved, and one-die multi-piece production can be achieved. The device is unique in structure and high in practicability, and the production efficiency is greatly improved to a certain extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to railway field especially connect a kind of connecting plate forging die. BACKGROUND

[0002] Coupler yoke is the key component of railway freight car, bears traction tension, ensures that freight car compartment connection is stable.Connecting plate is the connecting part of coupler yoke frame body.According to CRCC certification requirement, connecting plate is forged by unified raw material furnace number, so forging process has particularity and complexity, to meet the needs of domestic vehicle modification and new production.The existing forging die can only realize one piece production, production efficiency is low, while selecting forging raw material specification diameter 70, since procurement tonnage is small, it is not convenient to be smelted by raw material steel plant. SUMMARY

[0003] Based on the above problems, the utility model aims at providing a connecting plate forging die, and the utility model adopts the following technical scheme:

[0004] The utility model provides a connecting plate forging die, which comprises:

[0005] Upper forging die, the bottom surface of the upper forging die is provided with a lower concave flash bin part, a plurality of lower concave upper cavities are arranged at the center position of the flash bin part, and an upper convex bridge part is arranged on the periphery of each upper cavity;

[0006] Lower forging die, the lower forging die is located directly below the upper forging die, the top surface of the lower forging die is provided with a lower concave bin part cavity, a plurality of lower concave lower cavities are arranged at the center position of the bin part cavity, and each lower cavity is in one-to-one correspondence with each upper cavity.

[0007] Preferably, the upper cavities and the lower cavities are arranged in a rectangular array; two adjacent upper cavities are connected by the bridge part.

[0008] Preferably, the number of the upper cavities and the lower cavities is four.

[0009] Preferably, the upper forging die and the lower forging die are both rectangular in shape.

[0010] The upper wedge iron matching surface is arranged on the rectangular long side of the bottom surface of the upper forging die; and the lower wedge iron matching surface is arranged on the rectangular long side of the top surface of the lower forging die.

[0011] Preferably, the upper identification is engraved on the outer side wall of the long side of the upper forging die; and the lower identification is engraved on the outer side wall of the long side of the lower forging die.

[0012] The upper hoisting hole is arranged on the outer side wall of the short side of the upper forging die; and the lower hoisting hole is arranged on the outer side wall of the short side of the lower forging die.

[0013] Preferably, the upper convex resistance platform is arranged in the flash bin part, the number of the resistance platforms is two, and the two resistance platforms are symmetrically arranged relative to the area where the upper cavity is located.

[0014] Compared with the prior art, the beneficial technical effects of the utility model are:

[0015] The utility model discloses ingeniously utilize the structure and module space of the forge piece, make its forging easy to form, make full use of raw materials, can also realize one die multiple pieces production, improve production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model will be further described in connection with the drawings.

[0017] Fig. 1 It is the structure schematic diagram of the utility model's connecting plate forging die;

[0018] Fig. 2 It is the structure schematic diagram of the utility model's upper forging die;

[0019] Fig. 3 It is the structure schematic diagram of the utility model's lower forging die;

[0020] Fig. 4 It is the structure diagram of the utility model's 1 / 2 bar material;

[0021] Fig. 5 It is the one die four pieces product drawing forged by the utility model.

[0022] The figure mark explanation: 1, upper forging die;101, flash bin part;102, upper cavity;103, bridge part;104, upper wedge iron matching surface;105, upper mark;106, upper hoisting hole;107, resistance platform;2, lower forging die;201, bin part cavity;202, lower cavity;203, lower wedge iron matching surface;204, lower mark;205, lower hoisting hole. DETAILED DESCRIPTION

[0023] In order to make the technical problem, technical scheme and beneficial effect that the utility model wants to solve more clearly, the following combines the drawings and examples, and the utility model is further detailed.

[0024] As Figs. 1 to 3 The utility model discloses a connecting plate forging die, which comprises an upper forging die 1 and a lower forging die 2, wherein the upper forging die 1 is located directly above the lower forging die 2.

[0025] The bottom surface of the upper forging die 1 is provided with a lower concave flash pocket 101, and a plurality of lower concave upper cavities 102 are arranged at the center position of the flash pocket 101. The periphery of each upper cavity 102 is provided with an upper convex bridge 103, and the cross section of the bridge 103 is in the shape of a rectangle. Among them, the flash pocket 101 contains excess metal scrap during forging. The bridge 103 is used to block the metal in the upper cavity 102 from flowing outward. The height of the bridge 103 is about 2mm lower than the bottom surface of the upper forging die 1.

[0026] The top surface of the lower forging die 2 is provided with a lower concave pocket cavity 201, and a plurality of lower concave lower cavities 202 are arranged at the center position of the pocket cavity 201. Each lower cavity 202 corresponds to each upper cavity 102.

[0027] In this embodiment, the upper cavities 102 and the lower cavities 202 are arranged in a rectangular array, and the number of upper cavities 102 and lower cavities 202 is four. Two adjacent upper cavities 102 are connected by a bridge 103.

[0028] In this embodiment, the outer shape of the upper forging die 1 and the lower forging die 2 is rectangular structure; the upper wedge iron matching surface 104 is arranged on the long side of the bottom surface of the upper forging die 1; the lower wedge iron matching surface 203 is arranged on the long side of the top surface of the lower forging die 2. The upper wedge iron matching surface 104 and the lower wedge iron matching surface 203 are fastened and matched with the inclined surface of the machine tool equipment through the inclined iron.

[0029] In this embodiment, the upper identification 105 is engraved on the outer side wall of the long side of the upper forging die 1; the lower identification 204 is engraved on the outer side wall of the long side of the lower forging die 2; wherein the upper identification 105 is located above the upper wedge iron matching surface 104, and the lower identification 204 is located below the lower wedge iron matching surface 203.

[0030] In this embodiment, the upper lifting hole 106 is arranged on the outer side wall of the short side of the upper forging die 1; the lower lifting hole 205 is arranged on the outer side wall of the short side of the lower forging die 2. The arrangement of the upper lifting hole 106 and the lower lifting hole 205 facilitates the lifting and turning of the forging die in actual production.

[0031] In this embodiment, the resistance platform 107 is arranged in the flash pocket 101, and the number of resistance platforms 107 is two. The two resistance platforms 107 are symmetrically arranged about the area where the upper cavities 102 are located. The resistance platform 107 is a step designed to block the flow of metal. Specifically, the solution is to prevent the middle blank from flowing too fast to form flash, which leads to insufficient storage in other places, thereby forming a lack of talent. After setting the resistance platform 107, the middle blank flows slowly, thereby flowing to other places, ensuring that each position of the cavity has storage, so that the cavity is full, and the product quality is guaranteed.

[0032] Based on the specific structure of the connecting plate forging die, Fig. 4 and 5As shown, the embodiment also discloses a connecting plate forging preparation method, which comprises the following steps:

[0033] According to the required blank size, a sawing machine with a model of GZ4230 is used to saw the round steel with a material of 25MnCrNiMoA, then the round steel is sawed by a sawing tool, and the round steel is sawed along an axis to divide it into two;

[0034] An intermediate frequency electric furnace with a power of 1600KW is used to heat the 1 / 2 rod material, and the heating temperature is 1100-1200℃;

[0035] The heated 1 / 2 rod material is placed in a forging die and placed at the center of the warehouse cavity 201 (i.e. the center position of the four lower cavity 202 regions), and a 10T die forging hammer is used for die forging;

[0036] Finally, a 1250T oil press is used for pressing characters and cutting off flash.

[0037] The forging die of the utility model can realize one-die four-piece production, and the four forged pieces are connected by flash, and the four forged pieces are separated after edge cutting in the later period. The raw material used in the utility model is all with a diameter of 155, and the steel plant can also conveniently smelt according to tonnage.

[0038] The above-described embodiment only describes the preferred mode of the utility model, and does not limit the scope of the utility model. Without departing from the design spirit of the utility model, various deformations and improvements of the technical solutions of the utility model made by those skilled in the art should fall within the protection scope determined by the claim book of the utility model.

Claims

1. A forging die for a connecting plate, characterized in that, include: The upper forging die (1) has a recessed flash compartment (101) on its bottom surface. The flash compartment (101) has a plurality of recessed upper cavities (102) at its center. Each upper cavity (102) has a convex bridge portion (103) around its periphery. The lower forging die (2) is located directly below the upper forging die (1). The top surface of the lower forging die (2) is provided with a recessed cavity (201). The center of the cavity (201) is provided with a plurality of recessed lower cavities (202). Each lower cavity (202) corresponds to and cooperates with each upper cavity (102).

2. The connecting plate forging die according to claim 1, characterized in that: The upper cavity (102) and the lower cavity (202) are arranged in a rectangular array; adjacent upper cavities (102) are connected by the bridge (103).

3. The connecting plate forging die according to claim 2, characterized in that: The number of the upper cavity (102) and the lower cavity (202) are both four.

4. The connecting plate forging die according to claim 1, characterized in that: Both the upper forging die (1) and the lower forging die (2) have rectangular shapes. The upper forging die (1) has an upper wedge mating surface (104) on the long rectangular side of its bottom surface; the lower forging die (2) has a lower wedge mating surface (203) on the long rectangular side of its top surface.

5. The connecting plate forging die according to claim 1, characterized in that: The upper forging die (1) has an upper mark (105) engraved on the outer wall where the long side is located; the lower forging die (2) has a lower mark (204) engraved on the outer wall where the long side is located; The upper forging die (1) has an upper lifting hole (106) on the outer side wall where the short side is located; the lower forging die (2) has a lower lifting hole (205) on the outer side wall where the short side is located.

6. The connecting plate forging die according to claim 1, characterized in that: The edge compartment (101) is provided with an upwardly protruding resistance platform (107). There are two resistance platforms (107), and the two resistance platforms (107) are arranged symmetrically about the area where the upper cavity (102) is located.

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