Connecting rod die for die forging process

Abstract

The utility model discloses a connecting rod die for a die forging process, which is matched with a grenade-shaped blank and comprises an upper die and a lower die, the upper die comprises a cuboid-shaped upper die body, and an upper die cavity is formed in the upper die body. Four bosses are arranged at four corners of a plane corresponding to the upper die cavity, the upper die cavity comprises two layers of cavities which are respectively an upper die upper cavity and an upper die lower cavity, the lower die comprises a cuboid-shaped lower die body, a lower die cavity is arranged in the lower die body, four grooves corresponding to the four bosses of the upper die cavity are arranged at four corners of a plane corresponding to the lower die cavity, and the upper die cavity and the lower die cavity are communicated with each other. The positioning device is used for positioning the upper die and the lower die; the lower die cavity comprises two layers of cavities, namely a lower die upper cavity corresponding to the upper die upper cavity and a lower die lower cavity corresponding to the upper die lower cavity, and a plurality of resistance tables are arranged in the upper die lower cavity, the lower die upper cavity and the lower die lower cavity and used for assisting in blank forming. The die replaces multiple dies of a pre-forging cavity and a finish-forging cavity in the prior art, the die structure is simplified, only one finish-forging cavity is designed, a resistance table is added, metal flow is limited, the forming effect is guaranteed, and the die design cost is reduced.

Description

Technical Field

[0001] The utility model discloses a connecting rod die used in a die forging process, belonging to the technical field of die forging processes. Background Art

[0002] The demand for connecting rods is rapidly increasing, and their production requires die forging. Developing a reliable, cost-effective die forging process is crucial for mass production. Current connecting rod production typically involves blanking, die forging, and trimming, with die forging including pre-forging and final forging. Blanking is typically complex, time-consuming, and requires skilled workers. Connecting rod die forging requires the design of both pre-forging and final forging cavities, resulting in high mold manufacturing costs and the need for large mold modules, placing high demands on equipment. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings, the utility model discloses a connecting rod die for a die forging process, which is adapted for a grenade-shaped blank.

[0004] The technical solution of the utility model is as follows:

[0005] A connecting rod die for die forging, adapted for grenade-shaped blanks, comprising an upper die and a lower die;

[0006] The upper mold includes a rectangular upper mold body, an upper mold cavity is provided in the upper mold body, and four bosses are provided at the four corners of the plane corresponding to the upper mold cavity. The upper mold cavity includes two layers of cavities, namely an upper mold upper cavity and an upper mold lower cavity; the shape of the upper mold lower cavity is grenade-shaped, one end is a circular groove body, and a small cylindrical boss is provided in the groove body; the middle is a connecting section, and a long strip boss is provided in the middle of the connecting section cavity; the other end is a rectangular groove body, and a large cylindrical boss is provided in the groove body, an arc groove is provided at the end of the groove body away from the connecting section, and an arc-shaped resistance platform is provided between the arc groove and the large cylindrical boss;

[0007] The lower mold includes a rectangular lower mold body, a lower mold cavity is arranged in the lower mold body, and four grooves corresponding to the four bosses of the upper mold cavity are arranged at the four corners of the plane corresponding to the lower mold cavity, which are used for positioning the upper mold and the lower mold; the lower mold cavity includes two layers of cavity, namely the lower mold upper cavity corresponding to the upper mold upper cavity and the lower mold lower cavity corresponding to the upper mold lower cavity; the shape and internal structure of the lower mold lower cavity correspond to the upper mold lower cavity.

[0008] Preferably, in the upper cavity of the lower mold, a continuous resistance platform 2 is provided around the circular groove body of the lower cavity of the lower mold and on both sides of the connecting section to help form the small ring of the connecting rod and the connecting rod.

[0009] Preferably, in the upper cavity of the lower mold, a group of resistance platforms three are arranged around both sides of the rectangular groove body of the lower cavity of the lower mold to help form the large circular ring of the connecting rod.

[0010] Preferably, a group of resistance platforms four are provided on both sides of the long strip boss in the connecting section of the upper mold lower cavity and the lower mold lower cavity, so as to assist in the forming of the connecting rod of the connecting rod.

[0011] Preferably, a group of arc-shaped resistance platforms 5 are arranged around the bottom of the large cylindrical boss in the lower cavity of the lower mold to help form the large circular ring of the connecting rod.

[0012] The beneficial effects of the utility model are:

[0013] The mold of the utility model replaces the multiple molds of pre-forging cavity + final forging cavity in the prior art, simplifies the mold structure, designs only one final forging cavity, adds a resistance platform, limits metal flow, ensures the forming effect, and reduces the mold design cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the upper mold of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the lower mold of the utility model;

[0016] Figure 3 It is a blank suitable for the mold of the utility model. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are not intended to limit the scope of protection of the present invention.

[0018] like Figure 1 、 2 As shown in the figure, a connecting rod die for die forging process is suitable for grenade-shaped blanks. The original blanks have high requirements and are dumbbell-shaped. The blanks are complex in shape and require additional blank making tools. The blank making time is long and the workers' technical level is high. In order to simplify the blank making process, the blanks are designed as follows Figure 3 The shape shown.

[0019] The connecting rod mold includes an upper mold 1 and a lower mold 2;

[0020] The upper mold 1 includes a rectangular upper mold body, an upper mold cavity is provided in the upper mold body, and four bosses 11 are provided at the four corners of the plane corresponding to the upper mold cavity. The upper mold cavity includes two layers of cavities, namely an upper mold upper cavity 12 and an upper mold lower cavity 13; the upper mold lower cavity 13 is in the shape of a grenade, one end of which is a circular groove body, and a small cylindrical boss 14 is provided in the groove body; the middle is a connecting section, and a long strip boss 15 is provided in the middle of the connecting section cavity; the other end is a rectangular groove body, and a large cylindrical boss 16 is provided in the groove body, an arc groove is provided at the end of the groove body away from the connecting section, and an arc-shaped resistance platform 17 is provided between the arc groove and the large cylindrical boss;

[0021] The lower mold 2 includes a rectangular lower mold body, a lower mold cavity is arranged in the lower mold body, and four grooves 21 corresponding to the four bosses 11 of the upper mold cavity are arranged at the four corners of the plane corresponding to the lower mold cavity, which are used for positioning the upper mold 1 and the lower mold 2; the lower mold cavity includes two layers of cavity, namely the lower mold upper cavity 22 corresponding to the upper mold upper cavity 12 and the lower mold lower cavity 23 corresponding to the upper mold lower cavity 13; the shape and internal structure of the lower mold lower cavity 23 correspond to the upper mold lower cavity 13.

[0022] Preferably, in the above-mentioned lower mold upper cavity 23, a continuous resistance platform 24 is set around the circular groove body of the lower mold lower cavity and on both sides of the connecting section to help form the small ring of the connecting rod and the connecting rod.

[0023] Preferably, in the above-mentioned lower mold upper cavity 23, a group of resistance platforms 25 are set on both sides of the rectangular groove body of the lower mold lower cavity to help form the large circular ring of the connecting rod.

[0024] Preferably, a group of resistance platforms 27 are provided on both sides of the long strip boss in the connecting section of the upper mold lower cavity 13 and the lower mold lower cavity 23 to help form the connecting rod of the connecting rod.

[0025] Preferably, a group of arc-shaped resistance platforms 5 26 are provided around the bottom of the large cylindrical boss in the lower cavity 23 of the lower mold to help form the large circular ring of the connecting rod.

[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A connecting rod die for die forging process, characterized in that Including upper die and lower die; The upper mold comprises an upper mold body in the shape of a rectangular parallelepiped, an upper mold cavity is arranged in the upper mold body, four bosses are arranged at the four corners of the plane corresponding to the upper mold cavity, and the upper mold cavity comprises two layers of cavities, namely an upper mold cavity and an upper mold lower cavity; the shape of the upper mold lower cavity is grenade-shaped, one end is a circular groove body, a small cylindrical boss is arranged in the groove body; the middle is a connecting section, a long strip boss is arranged in the middle of the connecting section cavity; the other end is a rectangular groove body, a large cylindrical boss is arranged in the groove body, an arc groove is arranged at one end of the groove body away from the connecting section, and an arc-shaped resistance platform is arranged between the arc groove and the large cylindrical boss; The lower mold includes a rectangular lower mold body, a lower mold cavity is arranged in the lower mold body, and four grooves corresponding to the four bosses of the upper mold cavity are arranged at the four corners of the plane corresponding to the lower mold cavity, which are used for positioning the upper mold and the lower mold; the lower mold cavity includes two layers of cavity, namely the upper cavity of the lower mold corresponding to the upper cavity of the upper mold and the lower cavity of the lower mold corresponding to the lower cavity of the upper mold; the shape and internal structure of the lower cavity of the lower mold correspond to the lower cavity of the upper mold.

2. A connecting rod die for die forging process according to claim 1, characterized in that In the upper cavity of the lower mold, a continuous resistance platform 2 is arranged around the circular groove body of the lower cavity of the lower mold and on both sides of the connecting section to help the forming of the small circular ring of the connecting rod and the connecting rod.

3. A connecting rod die for die forging process according to claim 1, characterized in that In the upper cavity of the lower mold, a group of resistance platforms are arranged around the two sides of the rectangular groove body of the lower cavity of the lower mold to help form the large circular ring of the connecting rod.

4. A connecting rod die for die forging process according to claim 1, characterized in that A group of resistance platforms four are arranged on both sides of the long strip boss in the connecting section of the upper mold lower cavity and the lower mold lower cavity, which are used to help the forming of the connecting rod of the connecting rod.

5. A connecting rod die for die forging process according to claim 1, characterized in that A group of arc-shaped resistance platforms 5 are arranged around the bottom of the large cylindrical boss in the lower cavity of the lower mold to help form the large circular ring of the connecting rod.

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