CN116618569A - Forming die of oil sprayer body - Google Patents

Abstract

The invention provides a molding die for a fuel injector body. The fuel injector body includes a fuel injector nozzle, and also includes a forming punch, a forming die, a positioning pin and a positioning sleeve. The horizontal plane of the top height of the oil nozzle is the first parting surface of the punch, the downward slope of the top of the nozzle is the second parting surface of the punch, and the upper and lower slopes of the nozzle are The horizontal plane at the height of the junction point is the third convex mold parting surface, and the horizontal plane at the top height of the fuel injection nozzle is the first concave mold parting surface of the forming die, and the upward inclined surface at the bottom of the fuel injection nozzle is For the second die parting surface, the horizontal plane at the height of the junction point between the upper inclined surface and the lower inclined surface of the fuel injector is the third die parting face. The invention has the advantages of being capable of mass production, realizing axial demoulding, ensuring the coaxiality of the parting surface and the positioning hole, and the like.

Description

A molding die for a fuel injector body

technical field

The invention relates to a die structure for warm forging forming in the technical field of pressure metal forging, suitable for forming dies for the axial release of various fuel injector bodies, belonging to the technical field of precision forging, and in particular to a forming die for fuel injector bodies.

Background technique

The fuel injector body is an important part of the internal combustion engine. The fuel injector is realized by closed forging, which can improve the material utilization rate and the strength of the fuel injector, and can also reduce the subsequent machining allowance. Due to the particularity of the nozzle shape of the injector body, the parting structure of the upper and lower dies is different from the transverse parting structure of the largest cross-section of conventional forgings, and the conventional transverse parting structure cannot achieve axial release.

Therefore, it is necessary to provide a new technical solution.

Contents of the invention

In order to solve the technical problems existing in the prior art, the present invention discloses a molding die for a fuel injector body, and the specific technical solutions are as follows:

The invention provides a molding die for a fuel injector body, the fuel injector body includes a fuel injector, and the fuel injector includes an upper inclined surface protruding obliquely downward from its top and an upper inclined surface along the upper inclined surface. The side of the edge arrangement, which also includes the forming punch, the forming die, the positioning pin and the positioning sleeve,

The forming punch is an upper die, and the forming punch takes the horizontal plane of the top height of the fuel injector as the first punch parting surface, and takes the upper inclined surface of the fuel injector as the second punch parting surface. surface, with the horizontal plane at the lowest point of the upper inclined surface as the third punch parting surface,

The forming die is a lower die, the forming die takes the horizontal plane of the top height of the fuel injector as the first die parting surface, and takes the top plane of the side of the fuel injector as the second die parting surface surface, with the horizontal plane at the lowest point of the upper inclined surface as the third die parting surface,

The parting surface of the first male mold is bonded to the parting surface of the first concave mold, the parting surface of the second male mold is bonded to the parting surface of the second concave mold, and the parting surface of the third convex mold is bonded. The parting surface is attached to the parting surface of the third concave mold,

The positioning pin is arranged on the forming die, the positioning sleeve is arranged on the forming punch, and the positioning pin is matched with the positioning sleeve for positioning.

Further, the forming punch includes an inner ring of the punch and an outer ring of the punch,

The center of the inner ring of the punch is provided with a convex mold cavity, and the bottom of the inner ring of the punch is provided with the parting surface of the first punch, the parting surface of the second punch and the third parting surface of the punch parting surface, the height of the parting surface of the third punch is lower than that of the parting surface of the first punch, and the top of the parting surface of the second punch is connected to the parting surface of the first punch connected, and the bottom of the parting surface of the second male mold is connected with the parting surface of the third male mold. The parting surface of the third punch extends outward to the edge of the inner ring of the punch with the width of the parting surface of the second punch,

The outer ring of the punch is sleeved on the outside of the inner ring of the punch,

The positioning sleeves are evenly arranged on the outer ring of the punch, and at least two positioning sleeves are provided.

Further, the forming die includes a die inner ring and a die outer ring,

The center of the inner ring of the die is provided with a cavity, and the top of the inner ring of the die is provided with the first die parting surface, the second die parting face, the third die Die parting surface, the height of the third die parting face is lower than the height of the first die parting face, the top of the second die parting face and the first die parting face connected, the bottom of the parting surface of the second concave mold is connected with the parting surface of the third concave mold. The third die parting surface extends outward to the edge of the inner ring of the die with the width of the second die parting face,

The positioning pins are evenly arranged on the outer ring of the die, and the positioning pins are in interference fit with the outer ring of the die, and at least two positioning pins are provided.

Further, the locating pin and the locating sleeve fit in a small gap, and the height of the locating pin protruding from the forming die is greater than the parting surface of the first punch and the parting surface of the third punch height difference between faces.

Further, the parting surface of the outer ring of the punch is the plane where the parting surface of the first punch is located, and the parting surface of the outer ring of the die is the plane where the parting surface of the first die is located , the parting surface of the outer ring of the male die and the parting face of the outer ring of the female die fit together.

Further, the forming male die and the forming concave die are fitted with a small clearance.

Further, the inner ring of the punch and the outer ring of the punch are press-fitted at an angle of α°, α°≤3°, and the inner ring of the punch and the outer ring of the punch are interference fit, the The cavity of the convex mold, the parting surface of the second convex mold and the inner hole of the positioning sleeve are completed by one-time high-speed milling.

Further, the inner ring of the die and the outer ring of the die are press-fitted at an angle of β°, β°≤3°, and the inner ring of the die and the outer ring of the die are interference fit, the The cavity of the concave mold, the parting surface of the second concave mold and the inner hole of the positioning pin are completed in one process by high-speed milling.

The present invention has the following beneficial effects:

1. The molding die for the fuel injector body provided by the present invention has a simple structure and ingenious design, and can mass-produce the fuel injector body.

2. The molding die for the fuel injector body provided by the present invention adopts a multi-section parting form, which can realize the axial demoulding of the fuel injector body after forging, facilitates demoulding processing, and improves production efficiency.

3. In the molding die for the injector body provided by the present invention, multiple parting surfaces and inner holes of positioning sleeves or positioning pins are processed at one time to ensure the coaxiality of the parting surfaces and positioning holes.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic structural view of a molding die for a fuel injector body provided by an embodiment of the present invention.

Fig. 2 is a schematic structural view of the fuel injector body in the present invention.

Fig. 3 is a schematic structural view of the forming punch in Fig. 1 .

Fig. 4 is a schematic structural view of the forming die in Fig. 1 .

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner" and "outer" are based on those shown in the accompanying drawings. Orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

The invention discloses a molding die for a fuel injector body. Referring to Fig. 1 to Fig. 4, the fuel injector body includes a fuel injector, and the fuel injector includes an upward inclined The surface and the side surfaces arranged along the edge of the upper inclined surface, referring to FIGS. The forming punch 1 is an upper die, and the forming punch 1 takes the horizontal plane of the top height of the fuel injector as the first punch parting surface 1a, and takes the upper inclined surface of the fuel injector as the second convex. As for the mold parting surface 1b, the horizontal plane at the lowest point of the upper inclined surface is the third male mold parting surface 1c. The forming die 2 is a lower die, and the forming die 2 takes the horizontal plane of the top height of the fuel injector as the first die parting surface 2a, and takes the top plane of the fuel injector side as the second concave. As for the mold parting surface 2b, the horizontal plane at the lowest point of the upper inclined surface is the third concave mold parting surface 2c.

The first male mold parting surface 1a is bonded to the first female mold parting surface 2a, the second male mold parting surface 1b is bonded to the second female mold parting surface 2b, and the The third male mold parting surface 1c is attached to the third female mold parting surface 2c.

The positioning pin 3 is arranged on the forming die 2 , the positioning sleeve 4 is arranged on the forming punch 1 , and the positioning pin 3 is matched with the positioning sleeve 4 for positioning.

The forming punch 1 includes a punch inner ring 11 and a punch outer ring 12, the center of the punch inner ring 11 is provided with a punch cavity 13, and the bottom of the punch inner ring 11 is provided with the first The punch parting surface 1a, the second punch parting surface 1b and the third punch parting surface 1c, the height of the third punch parting surface 1c is lower than the first punch parting surface The height of die face 1a. The top of the second punch parting surface 1b is connected to the first punch parting surface 1a, and the bottom of the second punch parting surface 1b is connected to the third punch parting surface 1c. The third punch parting surface 1c extends outward to the edge of the punch inner ring 11 at the width of the second punch parting surface 1b. The outer ring 12 of the punch is sleeved on the outer side of the inner ring 11 of the punch, and the positioning sleeves 4 are evenly arranged on the outer ring 12 of the punch, and at least two positioning sleeves 4 are provided.

The forming die 2 includes a die inner ring 21 and a die outer ring 22, the center of the die inner ring 21 is provided with a cavity 23, and the top of the die inner ring 21 is provided with the first The die parting surface 2a, the second die parting face 2b, the third die parting face 2c, the height of the third die parting face 2c is lower than the first die parting face The height of the mold face 2a. The top of the second die parting surface 2b is connected to the first die parting face 2a, and the bottom of the second die parting face 2b is connected to the third die parting face 2c2. The third die parting surface 2c extends outward to the edge of the die inner ring 21 at the width of the second die parting face 2b. The positioning pins 3 are evenly arranged on the outer ring 22 of the die, and the positioning pins 3 are in interference fit with the outer ring 22 of the die, and at least two positioning pins 3 are provided.

The locating pin 3 and the locating sleeve 4 fit in a small gap, and the height of the locating pin 3 protruding from the forming die 2 is greater than that of the first punch parting surface 1a and the third punch The height difference between parting surfaces 1c.

The parting surface of the punch outer ring 12 is the plane where the first punch parting surface 1a is located, and the parting surface of the die outer ring 22 is where the first die parting surface 2a is located. plane, the parting surface of the outer ring of the male die 12 and the parting face of the outer ring of the female die 22 fit together.

The forming male die 1 and the forming concave die 2 are matched with a small clearance.

The inner ring 11 of the punch and the outer ring 12 of the punch are press-fitted at an angle of α°, α°≤3°, and the inner ring 11 of the punch and the outer ring 12 of the punch are interference fit, so The cavity 13 of the convex mold, the parting surface 1b of the second convex mold and the inner hole of the positioning sleeve 4 are completed by high-speed milling at one time.

The die inner ring 21 and the die outer ring 22 are press-fitted at an angle of β°, β°≤3°, and the die inner ring 21 and the die outer ring 22 are interference fit, so The cavity 23 of the concave mold, the parting surface 2b of the second concave mold and the inner hole of the positioning pin 3 are completed by high-speed milling at one time.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples" or "some examples" mean specific features described in connection with the embodiment or example, A structure, material or characteristic is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Also, those skilled in the art can combine and combine different embodiments or examples described in this specification.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments are subject to alterations, modifications and variations.

Claims (8)

1. The forming die of the oil sprayer body comprises an oil sprayer, wherein the oil sprayer comprises an upper inclined surface which is downwards inclined from the top of the oil sprayer and a side surface which is arranged along the edge of the upper inclined surface, and is characterized by further comprising a forming male die, a forming female die, a positioning pin and a positioning sleeve,

the forming male die is an upper die, the forming male die takes a horizontal plane of the top height of the oil nozzle as a first male die parting surface, an upper inclined plane of the oil nozzle as a second male die parting surface, a horizontal plane at the lowest point of the upper inclined plane as a third male die parting surface,

the forming female die is a lower die, the forming female die takes the horizontal plane of the top height of the oil nozzle as a first female die parting surface, the top plane of the side surface of the oil nozzle as a second female die parting surface, the horizontal plane at the lowest point of the upper inclined surface as a third female die parting surface,

the first male die parting surface is jointed with the first female die parting surface, the second male die parting surface is jointed with the second female die parting surface, the third male die parting surface is jointed with the third female die parting surface,

the locating pin is arranged on the forming female die, the locating sleeve is arranged on the forming male die, and the locating pin is matched with the locating sleeve for locating.

2. The molding die of the oil atomizer body according to claim 1, wherein the molding punch includes a punch inner ring and a punch outer ring,

the center of the male mold inner ring is provided with a male mold cavity, the bottom of the male mold inner ring is provided with a first male mold parting surface, a second male mold parting surface and a third male mold parting surface, the height of the third male mold parting surface is lower than that of the first male mold parting surface, the top of the second male mold parting surface is connected with the first male mold parting surface, and the bottom of the second male mold parting surface is connected with the third male mold parting surface. The third punch parting surface extends outwards to the edge of the punch inner ring with the width of the second punch parting surface,

the male die outer ring is sleeved on the outer side of the male die inner ring,

the locating sleeves are uniformly arranged on the male die outer ring, and at least 2 locating sleeves are arranged.

3. The molding die of the injector body according to claim 1, wherein the molding die includes a die inner ring and a die outer ring,

the center of the female die inner ring is provided with a female die cavity, the top of the female die inner ring is provided with a first female die parting surface, a second female die parting surface and a third female die parting surface, the height of the third female die parting surface is lower than that of the first female die parting surface, the top of the second female die parting surface is connected with the first female die parting surface, and the bottom of the second female die parting surface is connected with the third female die parting surface. The third die parting surface extends outwards to the edge of the inner ring of the die with the width of the second die parting surface,

the locating pins are uniformly arranged on the female die outer ring, the locating pins are in interference fit with the female die outer ring, and at least 2 locating pins are arranged.

4. The forming die of the oil sprayer body according to claim 1, wherein the positioning pin is in small clearance fit with the positioning sleeve, and the height of the positioning pin extending out of the forming die is larger than the height difference between the first punch parting surface and the third punch parting surface.

5. The forming die of the oil sprayer body according to claim 4, wherein the parting surface of the male die outer ring is a plane where the parting surface of the first male die is located, the parting surface of the female die outer ring is a plane where the parting surface of the first female die is located, and the parting surfaces of the male die outer ring and the female die outer ring are attached to each other.

6. The molding die of an injector body according to claim 1, wherein the molding punch and the molding die are a small clearance fit.

7. The forming die of the oil sprayer body according to claim 2, wherein the punch inner ring and the punch outer ring are press-fitted at an angle of α°, α° is not more than 3 °, and the punch inner ring and the punch outer ring are interference-fitted, and the punch cavity, the second punch parting surface and the inner hole of the positioning sleeve are completed by one-time processing by high-speed milling.

8. The forming die of the oil sprayer body according to claim 3, wherein the female die inner ring and the female die outer ring are press-fitted at an angle of β°, β° is not more than 3 °, and the female die inner ring and the female die outer ring are interference fit, and the female die cavity, the second female die parting surface and the inner hole of the positioning pin are finished by one-time processing by high-speed milling.