CN110976734A

CN110976734A - Preforging die structure with non-uniform extrusion container gap

Info

Publication number: CN110976734A
Application number: CN201911319404.6A
Authority: CN
Inventors: 姜伟
Original assignee: WUHU SANLIAN FORGING CO Ltd
Current assignee: WUHU SANLIAN FORGING CO Ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-04-10

Abstract

The invention discloses a pre-forging die structure for a non-uniform extrusion container gap, relates to the field of forging, and aims at the problems that the service life of a lower die of a pre-forging die is short and the lower die of the pre-forging die is easy to crack and scrap, so that the product yield is low in the existing pre-forging device. The device has a novel structure, the service life of the die is prolonged to twice that of the original die design according to the product structure and the formability, the defect that the lower die of the pre-forging die is easy to crack and scrap due to the clearance of the extrusion container is overcome, and the device has practicability and is more protective.

Description

Preforging die structure with non-uniform extrusion container gap

Technical Field

The invention relates to the field of forging, in particular to a pre-forging die structure with non-uniform extrusion container gaps.

Background

At present, in the forging field, the pre-forging is one of the most important links, and the pre-forging device is necessary basic equipment. With particular regard to the preforging of the hub, the hub is a cylindrical metal part, centrally mounted on an axle, the inner contour of which supports the tire. Also called rim, steel ring, wheel and tyre bell. The hub is of various kinds according to diameter, width, molding mode and material. The use range and the use amount of hub bearing units are increasing, and the third generation has been developed, wherein the first generation consists of double row angular contact bearings. The second generation has a flange on the outer raceway for fixing the bearing, which can be simply screwed onto the axle. Making the maintenance of the car easier. The third generation hub bearing unit adopts the matching of the bearing unit and the anti-lock brake system. The hub unit is designed with an inner flange bolted to the drive shaft and an outer flange mounting the entire bearing together.

However, in the existing preforging device, the service life of the lower die of the preforging die is low, and the lower die of the preforging die is easy to crack and scrap, so that the product yield is low, therefore, in order to solve the problems, a preforging die structure with non-uniform extrusion cylinder gaps is provided.

Disclosure of Invention

The invention provides a pre-forging die structure with non-uniform extrusion container gaps, which solves the problems that the service life of a lower die of a pre-forging die is short, and the lower die of the pre-forging die is easy to crack and scrap, so that the finished product rate is low in the conventional pre-forging device.

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

a pre-forging die structure with non-uniform extrusion barrel gaps comprises an upper die plate, wherein an upper top plate is rotatably mounted at the top end of the upper die plate, a sliding groove is formed in the bottom end of the upper top plate, two sliding blocks with symmetrical structures are connected in the sliding groove in a sliding mode, an outer die plate frame is fixedly connected to the bottom ends of the sliding blocks, an upper die is arranged at the bottom end of the upper die plate, rectangular grooves are formed in the bottom ends, close to the upper die plate, of the outer die plate frame, anti-deviation fixing columns are fixedly mounted in the rectangular grooves, fixing grooves are formed in the bottom ends of the anti-deviation fixing columns, buffer grooves are fixedly mounted at the bottom ends in the fixing grooves, a lower die plate is fixedly connected to the bottom end of the buffer grooves, a lower die is fixedly mounted at the top end, close to the center of the lower die plate, a die plate shaft is fixedly mounted at the top end, the side wall of the circumference of the template shaft close to the lower template is fixedly provided with an extrusion cylinder, the extrusion cylinders are symmetrically distributed, and two sides of the lower die far away from the anti-deviation fixing column are fixedly provided with anti-leakage baffles.

Preferably, an anti-collision buffer layer is fixedly arranged between the two outer die plate frames.

Preferably, a spring piece is fixedly installed at the bottom end inside the buffer groove.

Preferably, air holes are formed in one sides, close to the upper die and the lower die, of the upper die plate and the lower die plate.

Preferably, each group of adjacent gaps of the extrusion container is arranged to be twice as far.

The invention has the beneficial effects that: 1. according to the structure and the formability of the product, the service life of the die is prolonged to twice of the original die design by adjusting the clearance of the extrusion barrels at different positions, and the die structure is suitable for all outer wheel products, so that the device has practicability; 2. the device overcomes the defect that the lower die of the pre-forging die is easy to crack and scrap due to the clearance of an extrusion cylinder, so that the lower die of the pre-forging die is free from cracking and scrap, the shape of an integral model is not changed, the service life of the die is effectively prolonged, the pre-forging die cavity is used for obtaining a die cavity with a size and a shape which are close to those of a forge piece, the device reduces the abrasion of a finish forging die cavity, the service life of the device is prolonged, metal is easy to fill the finish forging die cavity, the flowing condition of the metal in the finish forging die cavity is improved, the defects of fold lines and the like formed on the forge piece are avoided, and the device has convenience;

in conclusion, the device improves the service life of the die to two times of the original die design by adjusting the clearance of the extruding barrels at different positions according to the structure and the formability of the product, is suitable for all outer wheel products, and overcomes the defect that the clearance of the extruding barrels easily causes the lower die of the pre-forging die to be easily cracked and scrapped, so that the lower die of the pre-forging die does not crack and scrap.

Drawings

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

Fig. 2 is a schematic front view of the present invention.

Fig. 3 is a schematic structural diagram of the external formwork frame of the present invention.

Figure 4 is a schematic view of the configuration of the pre-forged outer wheel of the present invention.

Wherein: 1. mounting a template; 2. an upper top plate; 3. a slider; 4. an outer formwork frame; 5. an upper die; 6. an anti-deviation fixing column; 7. fixing grooves; 8. a buffer tank; 9. a lower template; 10. a lower die; 11. a template shaft; 12. pre-forging an outer wheel; 13. an extrusion cylinder; 14. an anti-seepage baffle; 15. anticollision buffer layer.

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. 1-4, a pre-forging die structure for a non-uniform extrusion container gap comprises an upper die plate 1, an upper top plate 2 is rotatably mounted at the top end of the upper die plate 1, a sliding groove is formed in the bottom end of the upper top plate 2, two sliding blocks 3 with symmetrical structures are slidably connected in the sliding groove, an outer die plate frame 4 is fixedly connected at the bottom end of each sliding block 3, an upper die 5 is arranged at the bottom end of the upper die plate 1, rectangular grooves are formed in the bottom ends, close to the upper die plate 1, of the outer die plate frame 4, a deviation-proof fixing column 6 is fixedly mounted in each rectangular groove, a fixing groove 7 is arranged at the bottom end of the deviation-proof fixing column 6, a buffer groove 8 is fixedly mounted at the bottom end inside each fixing groove 7, a lower die plate 9 is fixedly connected at the bottom end of the buffer groove 8, a lower die 10 is fixedly mounted at the top end, close to one side of, go up mould 5 and bed die 10 and be provided with the foreign steamer 12 of preforging near the position of template axle 11, the circumference lateral wall fixed mounting that template axle 11 is close to lower bolster 9 has recipient 13, recipient 13 is the symmetric distribution, the both sides fixed mounting that anti-skewing fixed column 6 was kept away from to bed die 10 has antiseep baffle 14, two fixed mounting has crashproof buffer layer 15 between the outer formwork support 4, the inside bottom fixed mounting of dashpot 8 has the spring leaf, the bleeder vent has been seted up to one side that cope match-plate pattern 1 and lower bolster 9 are close to last mould 5 and bed die 10, the every group adjacent clearance of recipient 13 is and sets up to the twice distance.

When the device is used, firstly, a pre-forging outer wheel 12 to be pre-forged is placed between an upper die 5 and a lower die 10 and fixed in a die plate shaft 11, then pouring and pre-forging treatment are carried out, a lower upper die plate 1 at the lower end of an upper top plate 2 rotates to extrude the upper die 5 to the upper end of an extrusion cylinder 13, an outer die plate frame 4 slides in the upper top plate 2 through a slide block 3 and approaches to the pre-forging outer wheel 12, anti-leakage baffles 14 at two ends have the effect of preventing the pre-forging leakage caused by the extrusion of the upper die 5 and the lower die 10, anti-deviation fixing columns 6, fixing grooves 7 and buffer grooves 8 between the outer die plate frame 4 and the lower die plate 9 prevent the cracking and scrapping of the lower die plate 9 caused by excessive collision of the device, the pre-forging stress of the extrusion cylinder 13 in the device is dispersed through an extension gap, the loss of the outer die plate frame 4 to the lower die plate 9, after the device is polished and molded, the upper top plate 2 and the lower template 9 are separated, and finally, the pre-forged finished product is taken out to be subjected to other forging procedures.

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

1. A pre-forging die structure with non-uniform extrusion barrel gaps comprises an upper template (1) and is characterized in that an upper top plate (2) is rotatably mounted at the top end of the upper template (1), a sliding groove is formed in the bottom end of the upper top plate (2), two sliding blocks (3) with symmetrical structures are slidably connected in the sliding groove, an outer template frame (4) is fixedly connected to the bottom end of each sliding block (3), an upper die (5) is arranged at the bottom end of the upper template (1), rectangular grooves are formed in the bottom ends, close to the upper template (1), of the two sides of the outer template frame (4), anti-deflection fixing columns (6) are fixedly mounted in the rectangular grooves, fixing grooves (7) are formed in the bottom ends of the anti-deflection fixing columns (6), buffer grooves (8) are fixedly mounted in the fixing grooves (7), and a lower template (9) is fixedly connected to the bottom ends of, the anti-deviation anti-leakage device is characterized in that a lower die (10) is fixedly mounted at the top end of one side, close to an upper die (5), of the lower die (9), a die plate shaft (11) is fixedly mounted at the top end, close to the center of the lower die plate (9), of the lower die (10), a pre-forging outer wheel (12) is arranged at the position, close to the die plate shaft (11), of the upper die (5) and the lower die (10), an extruding cylinder (13) is fixedly mounted on the circumferential side wall, close to the lower die plate (9), of the die plate shaft (11), the extruding cylinders (13) are symmetrically distributed, and anti-leakage baffles (14) are fixedly mounted on the two sides, far away from the anti-deviation fixing columns.

2. A preforging die structure with non-uniform container clearance as claimed in claim 1, wherein a crash cushion layer (15) is fixedly mounted between the two outer die plates (4).

3. A preforging die structure with non-uniform container clearance as claimed in claim 1, wherein a spring plate is fixedly mounted to the bottom end inside said buffer tank (8).

4. The forging die structure of the non-uniform extrusion container gap as recited in claim 1, wherein air holes are formed in one sides of the upper die plate (1) and the lower die plate (9) close to the upper die (5) and the lower die (10).

5. A preforging die arrangement with non-uniform container clearances as claimed in claim 1, wherein each set of adjacent clearances of said container (13) is arranged twice as far.