CN102974733B - A kind of vehicle oil filler small door hinge axle cold upsetting die of car - Google Patents

Abstract

The invention discloses a cold heading die for the hinge shaft of the small door of the fuel oil port of an automobile. The upper mold is provided with a spring pressing mechanism and a wedge, and the lower mold is provided with a lower module and a transverse module mechanism; the spring pressing mechanism and the lower module are combined. On the surface, there are grooves adapted to the shape of the hinge shaft of the fuel filler door; the transverse module mechanism is provided with a hole matching the hinge shaft of the fuel filler door, and the end of the hinge shaft of the fuel filler door is aligned with the hole. The bottom surface is in contact; when the upper mold moves down to the closed position of the mold, the spring pressing mechanism presses on the lower module, and the wedge acts on the transverse module mechanism, and makes the transverse module mechanism move. The distance of the local upsetting of the hinge axis. Adopting the above-mentioned technical scheme, the structure is compact, the mold has strong durability, the operation is convenient and fast, the production efficiency is high, and the quality of cold heading processing can be guaranteed, which can meet the needs of mass production.

Description

A cold heading mold for the hinge shaft of the small door of the automobile fuel filler

technical field

The invention belongs to the technical field of auto parts manufacturing, and relates to the process equipment technology in the manufacturing process. More specifically, the present invention relates to a cold heading die for the hinge shaft of a small door of an automobile gas filler.

Background technique

At present, the cold heading stamping process has its own process defects, such as poor mold durability and low production efficiency.

For example, the product shown in Figure 1 is produced, which is the hinge shaft 2 of the fuel filler door on the automobile body. It needs to be locally upset. If the ordinary mold structure is used, the process requirements cannot be realized at all, such as no material return during stamping, inconvenient picking and placing of parts, and it is difficult to achieve mass production and versatility.

Contents of the invention

The invention provides a cold heading die for a hinge shaft of a small door of an automobile gas filler, and the purpose is to meet the technical requirements of mass production.

In order to achieve the above object, the technical scheme that the present invention takes is:

The cold heading mold for the small hinge shaft of the fuel filler door of the automobile provided by the present invention comprises an upper mold and a lower mold, which are used for locally upsetting the hinge shaft of the fuel filler door on the automobile. The upper mold is provided with spring pressure A material mechanism and a wedge, and the lower mold is provided with a lower module and a transverse module mechanism;

On the joint surface of the spring pressing mechanism and the lower module, there are grooves adapted to the shape of the hinge shaft of the fuel filler door;

The horizontal module mechanism is provided with a hole matched with the hinge shaft of the small fuel filler door, and the end of the hinge shaft of the small fuel filler door is in contact with the bottom surface of the hole;

When the upper mold moves down to the mold closing position, the spring pressing mechanism presses on the lower module, and the oblique wedge acts on the transverse module mechanism to make the transverse module mechanism generate A movement, the distance of which is to make the hinge shaft of the small fuel filler door partially upset.

The spring pressing mechanism and the inclined wedge are fixed on the upper die through the upper die fixing plate; the lower module is fixed on the lower die through the lower die fixing plate; The guide structure is installed on the lower mold, and the horizontal module mechanism is also provided with a return spring.

At the corresponding positions of the spring pressing mechanism and the lower module, a recessed structure is provided, and the position of the recessed structure is adapted to the upset position on the hinge shaft of the small fuel filler door.

The present invention adopts the above technical scheme, has compact structure, strong mold durability, convenient and quick operation, improves production efficiency, can ensure the quality of cold heading processing, and can meet the needs of mass production.

Description of drawings

The following is a brief description of the content expressed in the drawings of this manual and the marks in the drawings:

Figure 1 is a structural schematic diagram of the hinge shaft of the fuel filler door;

Fig. 2 is a structural representation of the present invention;

Fig. 3 is a schematic structural view of the spring pressing mechanism in Fig. 2;

Fig. 4 is a side view of the structure shown in Fig. 3;

Fig. 5 is a top view of the structure shown in Fig. 3;

Fig. 6 is the schematic diagram of the wedge structure in Fig. 2;

Figure 7 is a schematic diagram of the right side of the structure shown in Figure 6;

Fig. 8 is a schematic structural diagram of the horizontal module mechanism in the present invention;

Fig. 9 is a sectional view of A-A in Fig. 8 .

Labeled in the figure:

1. The spring pressing mechanism, 2. The hinge shaft of the fuel filler door, 3. The lower module, 4. The wedge, 5. The upper mold fixing plate, 6. The horizontal module mechanism.

Detailed ways

The specific implementation of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

The structure of the present invention as shown in Fig. 2 to Fig. 9 is a cold heading die for the hinge shaft of the fuel filler door of an automobile, which includes an upper die and a lower die, and is used to partially carry out the hinge shaft 2 of the fuel filler door on the automobile. Upsetting processing. Its upsetting position is near the two ends on the hinge shaft 2 of the fuel filler door.

The diameter of the fuel filler door hinge shaft 2 is generally 3 mm.

In order to solve the problems existing in the prior art and overcome its defects, and realize the invention goal of reaching the technological requirements of mass production, the technical scheme adopted by the present invention is:

As shown in Figure 2, in the cold heading mold for the small door hinge shaft of the automobile fuel filler provided by the present invention, the spring pressing mechanism 1 and the wedge 4 are arranged on the upper mold, and the lower module 3 and the wedge 4 are arranged on the lower mold. Horizontal module mechanism6.

As shown in Fig. 2, Fig. 3 and Fig. 5, on the combined surface of the spring pressing mechanism 1 and the lower module 3, there are grooves adapted to the shape of the hinge shaft 2 of the fuel filler door. .

As shown in Figure 9, the horizontal module mechanism 6 is provided with a hole matching the hinge shaft 2 of the fuel filler door, and the end of the fuel filler hinge shaft 2 is in contact with the bottom surface of the hole. .

When the upper mold goes down to the mold closing position, the spring pressing mechanism 1 presses on the lower module 3, the wedge 4 acts on the transverse module mechanism 6, and makes the The transverse module mechanism 6 produces a movement, and the distance of its movement is the distance that makes the hinge shaft 2 of the small fuel filler door partially upset.

That is to say, under the action of the slope of the oblique wedge 4, the transverse module mechanism 6 moves in the axial direction of the hinge shaft 2 of the fuel filler door, and under the action of the bottom surface of the hole of the transverse module mechanism 6, the hinge shaft 2 of the fuel filler door The length is shortened, and the part exposed outside the transverse module mechanism 6 is upset.

The present invention utilizes the spring pressing mechanism 1 to fix and position the round bar material for manufacturing the small door hinge shaft 2 of the fuel filler on the lower module 3; One end of the round bar of the small door hinge shaft 2 of the fuel filler is formed by local cold heading near the end, and the worktable on the punching machine reaches the bottom dead center, that is, the upper die moves down to the closed position of the die.

Subsequently, the slide block on the punching machine leaves the bottom dead center, the wedge 4 moves upward, the transverse module mechanism 6 relaxes under the action of the spring force, and the molded part breaks away from the working state, and a molding is completed.

Then, the round bar material is turned around manually, and after performing the same action, the processing of the finished product of the fuel filler door hinge shaft 2 is completed.

The invention effectively solves the disadvantages of the prior art, and provides a wedge-type mold structure, which is compact in structure, strong in mold durability, and convenient and quick in operation.

Below is the structure and fixing mode of working part of the present invention:

The above-mentioned spring pressing mechanism 1 and oblique wedge 4 are fixed on the described upper die by the upper die fixing plate 5; the described lower module 3 is fixed on the described lower die by the lower die fixing plate; The horizontal module mechanism 6 is installed on the lower mold through a guide structure, and the horizontal module mechanism 6 is also provided with a return spring.

The effect of back-moving spring is when patrix moves up, and transverse module mechanism 6 returns to original working condition.

At the corresponding positions of the spring pressing mechanism 1 and the lower module 3, there is a recessed structure, and the position of the recessed structure is adapted to the upset position on the hinge shaft 2 of the fuel filler door.

Since the processed end of the hinge shaft 2 of the oil filler port has been upset, so when upsetting the other end, it is necessary to put the upset part into the concave structure to avoid its influence on processing.

The present invention has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods, as long as various insubstantial improvements are adopted in the method concept and technical solutions of the present invention, or there is no improvement Directly applying the conception and technical solutions of the present invention to other occasions falls within the protection scope of the present invention.

Claims (1)

1. a vehicle oil filler small door hinge axle cold upsetting die of car, comprises upper die and lower die, for carrying out gathering stock processing to the oil filler small door hinge axle (2) on automobile;

It is characterized in that:

Described patrix is established spring feeding pressure mechanism (1) and wedge (4), described counterdie is set module (3) and transverse module mechanism (6);

On the surface that described spring feeding pressure mechanism (1) and lower module (3) combine, be equipped with the groove adapted with described oil filler small door hinge axle (2) profile;

Described transverse module mechanism (6) is provided with the hole of matching with described oil filler small door hinge axle (2), and the end of described oil filler small door hinge axle (2) contacts with the bottom surface in this hole;

When patrix comes downwards to mold closed position, described spring feeding pressure mechanism (1) is pressed on described lower module (3), described wedge (4) acts in described transverse module mechanism (6), and making described transverse module mechanism (6) produce a motion, the distance of its motion is the distance making described oil filler small door hinge axle (2) gathering stock;

Described spring feeding pressure mechanism (1) and wedge (4) are fixed on described patrix by upper mould fixed plate (5); Described lower module (3) is fixed on described counterdie by counterdie fixed head; Described transverse module mechanism (6) is arranged on described counterdie by guide frame, and described transverse module mechanism (6) is also provided with back-moving spring;

In the relevant position of described spring feeding pressure mechanism (1) and lower module (3), be provided with sunk structure, the upset position on the position of this sunk structure and described oil filler small door hinge axle (2) adapts;

The method for upsetting of described mould is:

Utilize spring feeding pressure mechanism (1), the round bar manufacturing oil filler small door hinge axle (2) is fixed and positioned on lower module (3); Simultaneously, wedge (4) moves down with upper mould fixed plate (5), promote transverse module mechanism (6), under the effect on the inclined-plane of wedge (4), transverse module mechanism (6) by the axially-movable of oil filler small door hinge axle (2), by the local cold-heading molding of one end of the round bar of oil filler small door hinge axle (2) near end; Under the bottom surface effect in the hole of transverse module mechanism (6), oil filler small door hinge axle (2) length is pressed short, and it exposes transverse module mechanism (6) part outward by jumping-up;

Punch press upper table arrives lower dead center, and namely described patrix comes downwards to mold closed position;

Subsequently, punch press top shoe leaves lower dead center, and wedge moves by (4), and transverse module mechanism (6) loosens under spring force, and profiled member departs from duty, completes one-shot forming;

Then, manually round bar is reversed end for end, after carrying out same action, complete the processing of oil filler small door hinge axle (2) finished product.