CN110976742A - Forging die for high-pressure common rail pipe - Google Patents

Abstract

The invention discloses a forging die for a high-pressure common rail pipe, which relates to the field of forging dies and aims at solving the problem that a product is deformed due to the fact that a forge piece cannot be fixed in the current production process of the high-pressure common rail pipe. The invention has novel structure, simple operation and high practicability.

Description

Forging die for high-pressure common rail pipe

Technical Field

The invention relates to the field of forging dies, in particular to a forging die for a high-pressure common rail pipe.

Background

For the rapid improvement of the overall economic level of the current society, automobiles become essential articles of the public, so the overall market demand is gradually increased, and then in order to meet the market demand, for the part production process in the automobiles, the production idea of high speed and high quality is advocated, and particularly for the high-pressure common rail pipe, the high-pressure common rail pipe is the most important part in the high-pressure common rail technology in the automobile engine, and the high-pressure common rail technology mainly transmits high-pressure fuel oil to the parts needing to be used through the high-pressure common rail pipe, so the plastic condition of the high-pressure common rail pipe has strict requirements, such as the problem of hardness, and therefore, the production process of the high-pressure common rail pipe has strict control.

In the current high-pressure common rail pipe production process, a forging die is mainly used, continuous hammering is carried out through the driving of a hydraulic press generally in a hot forging mode, so that the product has good hardness, but in the production process, due to the plasticity factor of metal, the product can shake in the hammering process, the appearance of the produced product cannot meet the assembly requirement, and therefore, in order to solve the problems, the forging die for the high-pressure common rail end is provided.

Disclosure of Invention

The forging die for the high-pressure common rail pipe provided by the invention solves the problem that a product is deformed due to the fact that a forge piece cannot be fixed in the current production process of the high-pressure common rail pipe.

In order to achieve the purpose, the invention adopts the following technical scheme:

a forging die for a high-pressure common rail pipe comprises an upper die plate and a lower die plate, wherein a mother plate and a male plate are distributed and placed at the central positions of the upper surfaces of the lower die plate and the upper die plate, grooves matched with the high-pressure common rail pipe are formed in the central positions of the upper surfaces of the mother plate and the male plate, positioning pins are symmetrically distributed and fixedly installed on the upper surface of the mother plate, a variable frequency hydraulic machine and a conical head installation seat are fixedly installed on one side of the upper surface of the lower die plate respectively, ejector rods penetrating through the conical head installation seat are uniformly distributed and fixedly installed at the output end of the variable frequency hydraulic machine, a conical head matched with an oil injection hole in the high-pressure common rail pipe is fixedly installed at one end of each group of the ejector rods, the conical head is in sliding connection with the mother plate, first buffer springs are uniformly distributed and fixedly installed on one side of the conical head installation seat close to the mother plate, and the central, the improved structure of the ejector pin structure is characterized in that ejector pin mounting seats are arranged on two sides of the mother board, air cylinders are arranged on one sides of the ejector pin mounting seats, ejector pins penetrating through the ejector pin mounting seats are fixedly mounted at output ends of the air cylinders, the top ends of the ejector pins are located inside the grooves, positioning pin holes matched with the positioning pins are uniformly distributed in the male board, empty grooves matched with the conical heads and the ejector pins are formed in the male board, second buffer springs are fixedly mounted in the positioning pin holes, guide cylinders are fixedly mounted at opposite corners of the upper template, third buffer springs are fixedly mounted at the bottom ends of the inner walls of the guide cylinders, guide columns are slidably mounted in the guide cylinders, the top ends of the guide columns are fixedly connected with the third buffer springs, and the bottom ends of the guide columns are fixedly connected with the lower template.

Preferably, support columns are fixedly mounted at diagonal positions on the upper template and the lower template, and a limiting block is placed between the two groups of support columns.

Preferably, U-shaped grooves are uniformly distributed on the upper template and the lower template.

Preferably, the upper template and the male template are both provided with matched first fixing holes, and the lower template and the mother board are both provided with matched second fixing holes.

Preferably, the outer contours of the upper template, the male template, the female template and the lower template are all provided with C2 chamfers.

The invention has the beneficial effects that: in this mould, be provided with the fixing device of thimble type, at forging in-process, at first through the fixed centre gripping of effect with the work piece of thimble, so at the work piece forging in-process, can not rock because of the stress of metal, the deviation appears in the product appearance that leads to be provided with the device of beating to the nozzle opening on the product, can guarantee the product appearance effectively, the practicality is high. In this mould, every board all is through the fixed mounting of fixed screw, dismantlement and installation in the facilitate of use are provided with supporting shoe and stopper simultaneously, in the mould idle, through placing the stopper on the supporting shoe, can effectually avoid leading to public board and mother board to take place to warp because of idle for a long time, influence the use to and this mould is provided with a plurality of buffer spring, avoid the mould to receive great impact force and lead to the mould to receive the harm, increase mould life.

In conclusion, the die has good operation stability, can keep the appearance of a product, improves the qualified rate of the product, effectively protects the die, prolongs the service life of the die and has high practicability.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the lower template of the present invention.

Fig. 3 is a schematic structural diagram of the upper template of the present invention.

Wherein: 1. mounting a template; 2. a male plate; 3. a motherboard; 4. a lower template; 5. a thimble mounting base; 6. a cylinder; 7. a guide post; 8. positioning pins; 9. a thimble; 10. a conical head; 11. a top rod; 12. a first buffer spring; 13. a variable frequency hydraulic press; 14. a cone head mounting base; 15. a second buffer spring; 16. a third buffer spring; 17. a guide cylinder; 18. a positioning pin hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-3, a forging die for a high-pressure common rail pipe comprises an upper die plate 1 and a lower die plate 4, a mother plate 3 and a male plate 2 are distributed at the central positions of the upper surfaces of the lower die plate 4 and the upper die plate 1, grooves matched with the high-pressure common rail pipe are formed at the central positions of the upper surfaces of the mother plate 3 and the male plate 2, positioning pins 8 are symmetrically distributed and fixedly installed on the upper surface of the mother plate 3, a variable frequency hydraulic machine 13 and a cone mounting seat 14 are respectively and fixedly installed on one side of the upper surface of the lower die plate 4, ejector rods 11 penetrating through the cone mounting seat 14 are uniformly distributed and fixedly installed at the output end of the variable frequency hydraulic machine 13, a cone 10 matched with an oil injection hole on the high-pressure common rail pipe is fixedly installed at one end of each group of the ejector rods 11, the cone 10 is in sliding connection with the mother plate 3, first buffer springs 12 are, the central lines of each first buffer spring 12 and each ejector rod 11 are in the same straight line, thimble mounting seats 5 are respectively arranged on two sides of the mother board 3, a cylinder 6 is arranged on one side of each thimble mounting seat 5, an ejector pin 9 penetrating through the thimble mounting seat 5 is fixedly arranged at the output end of the cylinder 6, the top end of the ejector pin 9 is positioned in the groove, positioning pin holes 18 matched with the positioning pins 8 are uniformly distributed on the male board 2, empty grooves matched with the conical heads 10 and the ejector pins 9 are formed in the male board 2, second buffer springs 15 are fixedly arranged in the positioning pin holes 18, guide cylinders 17 are fixedly arranged at the diagonal positions of the upper template 1, third buffer springs 16 are fixedly arranged at the bottom ends of the inner walls of the guide cylinders 17, guide columns 7 are slidably arranged in the guide cylinders 17, the top ends of the guide columns 7 are fixedly connected with the third buffer springs 16, and the bottom ends of the guide columns 7 are fixedly connected with, equal fixed mounting in diagonal position on cope match-plate pattern 1 and the lower bolster 4 has the support column, has placed the stopper in the middle of two sets of support columns, is evenly distributed on cope match-plate pattern 1 and the lower bolster 4 and has seted up U type groove, and the first fixed orifices of matching is all seted up to cope match-plate pattern 1 and core plate 2, all sets up the second fixed orifices of matching on lower bolster 4 and the motherboard 3, and C2's chamfer is all seted up to cope match-plate pattern 1, core plate 2, motherboard 3 and lower bolster 4 outline.

In the forging process, firstly, a heated forging is placed in grooves in a male plate 2 and a female plate 3, a cylinder 6 is started, a thimble 9 props against the forging, an upper template 1 drives the male plate 2 to move downwards along with a hydraulic machine on a machine tool, the forging can be quickly positioned under the combined action of a positioning pin 8 and a positioning pin hole 18, the male plate 2 and the female plate 3 are attached under the combined action of a guide cylinder 17, a third buffer spring 16 and a guide post 7, the upper template 1 drives the male plate 2 to uninterruptedly reciprocate up and down under the action of the hydraulic machine of the machine tool, so that the forging effect is realized, meanwhile, in the attaching process of the male plate 2 and the female plate 3, a frequency conversion hydraulic machine 13 drives an ejector rod 11 to uninterruptedly beat an oil injection hole on a high-pressure common rail pipe, and in the beating process of the forging, a first buffer spring 12, a second buffer spring 15 and a third buffer spring 16 are arranged to effectively protect a die, make public board 2 and mother board 3 can not lead to public board 2 and mother board 3 to break because of receiving great impact force, in the mould idle, through placing the stopper on the bracing piece, ensure that public board 2 and mother board 3 can not receive the extrusion and lead to warping.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (5)

1. A forging die for a high-pressure common rail pipe comprises an upper die plate (1) and a lower die plate (4), and is characterized in that a mother plate (3) and a male plate (2) are distributed at the central positions of the upper surfaces of the lower die plate (4) and the upper die plate (1), grooves matched with the high-pressure common rail pipe are formed in the central positions of the upper surfaces of the mother plate (3) and the male plate (2), positioning pins (8) are symmetrically distributed and fixedly installed on the upper surface of the mother plate (3), a variable frequency hydraulic machine (13) and a cone head installation seat (14) are fixedly installed on one side of the upper surface of the lower die plate (4) respectively, ejector rods (11) penetrating through the cone head installation seat (14) are uniformly distributed and fixedly installed at the output end of the variable frequency hydraulic machine (13), a cone head (10) matched with an oil injection hole in the high-pressure common rail pipe is fixedly installed at one end of each group, the taper head (10) is in sliding connection with the mother board (3), one side of the taper head mounting seat (14) close to the mother board (3) is uniformly distributed and fixedly provided with first buffer springs (12), each first buffer spring (12) and the central line of each ejector rod (11) are in the same straight line, the ejector pin mounting seats (5) are arranged on two sides of the mother board (3), the air cylinder (6) is arranged on one side of each ejector pin mounting seat (5), the ejector pin (9) penetrating through the ejector pin mounting seats (5) is fixedly arranged at the output end of the air cylinder (6), the top end of the ejector pin (9) is positioned inside the groove, the male board (2) is uniformly distributed and provided with positioning pin holes (18) matched with the positioning pins (8), and the male board (2) is provided with empty grooves matched with the taper head (10) and the ejector pin (9), the positioning device is characterized in that a second buffer spring (15) is fixedly mounted inside the positioning pin hole (18), a guide cylinder (17) is fixedly mounted at the diagonal position of the upper template (1), a third buffer spring (16) is fixedly mounted at the bottom end of the inner wall of the guide cylinder (17), a guide pillar (7) is slidably mounted inside the guide cylinder (17), the top end of the guide pillar (7) is fixedly connected with the third buffer spring (16), and the bottom end of the guide pillar (7) is fixedly connected with the lower template (4).

2. The forging die for the high-pressure common rail pipe as recited in claim 1, wherein support columns are fixedly mounted at diagonal positions of the upper template (1) and the lower template (4), and a limiting block is placed between the two groups of support columns.

3. The forging die for the high-pressure common rail pipe as recited in claim 1, wherein the upper die plate (1) and the lower die plate (4) are uniformly provided with U-shaped grooves.

4. The forging die for the high-pressure common rail pipe as recited in claim 1, wherein the upper die plate (1) and the male plate (2) are provided with first matched fixing holes, and the lower die plate (4) and the mother plate (3) are provided with second matched fixing holes.

5. The forging die for the high-pressure common rail pipe as recited in claim 1, wherein the outer contours of the upper template (1), the male plate (2), the female plate (3) and the lower template (4) are all provided with C2 chamfers.

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