A forming die for an oil injector body

Abstract

The present application provides a kind of forming die of oil atomizer body, the oil atomizer body includes oil nozzle, and also includes forming punch, forming die, positioning pin and positioning sleeve, the forming punch is with the level surface of the top height of the oil nozzle as the first punch parting surface, with the inclined surface of the top of the oil nozzle downward as the second punch parting surface, with the level surface of the height of the intersection point of the upper inclined surface and the lower inclined surface of the oil nozzle as the third punch parting surface, the forming die is with the level surface of the top height of the oil nozzle as the first die parting surface, with the inclined surface of the bottom of the oil nozzle upward as the second die parting surface, with the level surface of the height of the intersection point of the upper inclined surface and the lower inclined surface of the oil nozzle as the third die parting surface.The present application has the advantages of being able to mass production, realizing axial demoulding and ensuring the coaxiality of parting surface and positioning hole.

Description

Technical Field

[0001] This invention relates to a mold structure for warm forging in the field of pressure metal forging technology. It is applicable to the forming mold for axial demolding of various fuel injector bodies and belongs to the field of precision forging forming technology. Specifically, it relates to a forming mold for fuel injector bodies. Background Technology

[0002] The fuel injector body is an important component of an internal combustion engine. Its fuel injector nozzle is formed through closed-circuit forging, which can improve material utilization and nozzle strength, and also reduce subsequent machining allowance. Due to the special shape of the fuel injector nozzle, its forming die parting structure is different from the transverse parting structure of the maximum cross-section of conventional forgings. Conventional transverse parting structures cannot achieve axial demolding.

[0003] Therefore, it is necessary to provide a new technical solution. Summary of the Invention

[0004] To address the technical problems existing in the prior art, this invention discloses a molding die for an injector body, the specific technical solution of which is as follows:

[0005] This invention provides a molding die for a fuel injector body. The fuel injector body includes a fuel nozzle, which has an upwardly inclined surface extending downward from its top and a side surface disposed along the edge of the upwardly inclined surface. The die also includes a forming punch, a forming die, a locating pin, and a locating sleeve.

[0006] The forming punch is an upper die. The first parting surface of the forming punch is the horizontal plane at the top height of the fuel injector, the second parting surface is the upward inclined surface of the fuel injector, and the third parting surface is the horizontal plane at the lowest point of the upward inclined surface.

[0007] The forming die is a lower die. The first parting surface of the forming die is the horizontal plane at the top height of the fuel injector, the second parting surface is the top plane of the side of the fuel injector, and the third parting surface is the horizontal plane at the lowest point of the upper inclined surface.

[0008] The first punch parting surface and the first die parting surface are fitted together, the second punch parting surface and the second die parting surface are fitted together, and the third punch parting surface and the third die parting surface are fitted together.

[0009] The positioning pin is disposed on the forming die, and the positioning sleeve is disposed on the forming punch. The positioning pin and the positioning sleeve are matched and positioned.

[0010] Furthermore, the forming punch includes an inner punch ring and an outer punch ring.

[0011] The inner ring of the punch has a punch cavity at its center. The bottom of the inner ring has a first punch parting surface, a second punch parting surface, and a third punch parting surface. The height of the third punch parting surface is lower than the height of the first punch parting surface. The top of the second punch parting surface is connected to the first punch parting surface, and the bottom of the second punch parting surface is connected to the third punch parting surface. The third punch parting surface extends outwards to the edge of the inner ring of the punch with the width of the second punch parting surface.

[0012] The outer ring of the punch is fitted onto the outside of the inner ring of the punch.

[0013] The positioning sleeves are evenly distributed on the outer ring of the punch, and at least two positioning sleeves are provided.

[0014] Furthermore, the forming die includes an inner die ring and an outer die ring.

[0015] The inner ring of the die has a centrally located die cavity. The top of the inner ring has a first die parting surface, a second die parting surface, and a third die parting surface. The height of the third die parting surface is lower than the height of the first die parting surface. The top of the second die parting surface is connected to the first die parting surface, and the bottom of the second die parting surface is connected to the third 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.

[0016] The locating pins are evenly distributed on the outer ring of the die cavity, and the locating pins are interference-fitted with the outer ring of the die cavity, and at least two locating pins are provided.

[0017] Furthermore, the positioning pin and the positioning sleeve are fitted with a small clearance, and the height of the positioning pin extending out of the forming die is greater than the height difference between the first punch parting surface and the third punch parting surface.

[0018] Furthermore, the parting surface of the outer ring of the punch is the plane where the first parting surface of the punch is located, and the parting surface of the outer ring of the die is the plane where the first parting surface of the die is located, and the parting surface of the outer ring of the punch and the parting surface of the outer ring of the die are in contact with each other.

[0019] Furthermore, the forming punch and the forming die are fitted with a small clearance.

[0020] Furthermore, the inner ring of the punch and the outer ring of the punch are press-fitted at an angle of α°, where α°≤3°, and the inner ring of the punch and the outer ring of the punch are interference fit. The punch cavity, the second punch parting surface, and the inner hole of the positioning sleeve are machined in one high-speed milling operation.

[0021] Furthermore, the inner and outer rings of the die are press-fitted at an angle of β°, where β° ≤ 3°, and the inner and outer rings of the die are interference fit. The die cavity, the second die parting surface, and the inner hole of the locating pin are machined in one high-speed milling operation.

[0022] The present invention has the following beneficial effects:

[0023] 1. The molding die for the injector body provided by the present invention has a simple structure and ingenious design, and can mass-produce injector bodies.

[0024] 2. The forming mold for the injector body provided by the present invention adopts a multi-section mold splitting form, which can realize axial demolding after the injector body is forged, which facilitates demolding and improves production efficiency.

[0025] 3. The molding die for the injector body provided by the present invention can complete the machining of multiple parting surfaces and the inner holes of positioning sleeves or positioning pins in one operation, ensuring the coaxiality of the parting surfaces and positioning holes.

[0026] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the molding die for the injector body provided in an embodiment of the present invention.

[0029] Figure 2 This is a schematic diagram of the injector body in this invention.

[0030] Figure 3 yes Figure 1 A schematic diagram of the forming punch.

[0031] Figure 4 yes Figure 1 A schematic diagram of the structure of the forming die. Detailed Implementation

[0032] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0033] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] This invention discloses a molding die for an injector body, with reference to... Figures 1 to 4 The injector body includes an injector nozzle, the injector nozzle including an upwardly inclined surface extending downward from its top and a side surface disposed along the edge of the upwardly inclined surface, for reference. Figures 1 to 4 It also includes a forming punch 1, a forming die 2, a locating pin 3, and a locating sleeve 4. The forming punch 1 is the upper die, with the horizontal plane at the height of the top of the fuel injector as the first parting surface 1a, the upward inclined surface of the fuel injector as the second parting surface 1b, and the horizontal plane at the lowest point of the upward inclined surface as the third parting surface 1c. The forming die 2 is the lower die, with the horizontal plane at the height of the top of the fuel injector as the first parting surface 2a, the top plane of the side of the fuel injector as the second parting surface 2b, and the horizontal plane at the lowest point of the upward inclined surface as the third parting surface 2c.

[0036] The first punch parting surface 1a and the first die parting surface 2a are in contact, the second punch parting surface 1b and the second die parting surface 2b are in contact, and the third punch parting surface 1c and the third die parting surface 2c are in contact.

[0037] The positioning pin 3 is disposed on the forming die 2, and the positioning sleeve 4 is disposed on the forming punch 1. The positioning pin 3 and the positioning sleeve 4 are matched and positioned.

[0038] The forming punch 1 includes an inner punch ring 11 and an outer punch ring 12. The inner punch ring 11 has a punch cavity 13 at its center. The bottom of the inner punch ring 11 has a first punch parting surface 1a, a second punch parting surface 1b, and a third punch parting surface 1c. The height of the third punch parting surface 1c is lower than the height of the first punch parting surface 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 outwards to the edge of the inner punch ring 11 with the width of the second punch parting surface 1b. The outer punch ring 12 is fitted onto the outside of the inner punch ring 11. Positioning sleeves 4 are evenly distributed on the outer punch ring 12, and at least two positioning sleeves 4 are provided.

[0039] The forming die 2 includes an inner die ring 21 and an outer die ring 22. The inner die ring 21 has a die cavity 23 at its center. The top of the inner die ring 21 has a first die parting surface 2a, a second die parting surface 2b, and a third die parting surface 2c. The height of the third die parting surface 2c is lower than the height of the first die parting surface 2a. The top of the second die parting surface 2b is connected to the first die parting surface 2a, and the bottom of the second die parting surface 2b is connected to the third die parting surface 2c. The third die parting surface 2c extends outwards to the edge of the inner die ring 21 with the width of the second die parting surface 2b. Positioning pins 3 are evenly distributed on the outer die ring 22, and the positioning pins 3 are interference-fitted with the outer die ring 22, with at least two positioning pins 3 provided.

[0040] The positioning pin 3 and the positioning sleeve 4 are fitted with a small clearance, and the height of the positioning pin 3 extending out of the forming die 2 is greater than the height difference between the first punch parting surface 1a and the third punch parting surface 1c.

[0041] The parting surface of the outer ring 12 of the punch is the plane where the first parting surface 1a of the punch is located, and the parting surface of the outer ring 22 of the die is the plane where the first parting surface 2a of the die is located. The parting surfaces of the outer ring 12 of the punch and the parting surfaces of the outer ring 22 of the die are in contact with each other.

[0042] The forming punch 1 and the forming die 2 are fitted with a small clearance.

[0043] The inner ring 11 and the outer ring 12 of the punch are press-fitted at an angle of α°, where α° ≤ 3°, and the inner ring 11 and the outer ring 12 of the punch are interference fit. The punch cavity 13, the second punch parting surface 1b and the inner hole of the positioning sleeve 4 are machined in one high-speed milling operation.

[0044] The inner ring 21 and the outer ring 22 of the die are press-fitted at an angle of β°, where β° ≤ 3°, and the inner ring 21 and the outer ring 22 of the die are interference fit. The die cavity 23, the second die parting surface 2b, and the inner hole of the positioning pin 3 are machined in one high-speed milling operation.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0046] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications and variations to the above embodiments within the scope of the present invention.

Claims

1. A forming die for an oil injector body, the oil injector body including an oil nozzle, the oil nozzle including an upper inclined surface which slopes downwardly from a top portion thereof and a side surface provided along an edge of the upper inclined surface, characterised in that, The forming punch, the forming die, the positioning pin and the positioning sleeve are also included, The forming punch is an upper die, the forming punch takes the horizontal plane of the top height of the oil nozzle as a first punch parting surface, takes the upper inclined surface of the oil nozzle as a second punch parting surface, and takes the horizontal plane at the lowest point of the upper inclined surface as a third punch parting surface, The forming die is a lower die, the forming die takes the horizontal plane of the top height of the oil nozzle as a first die parting surface, takes the top plane of the side surface of the oil nozzle as a second die parting surface, and takes the horizontal plane at the lowest point of the upper inclined surface as a third die parting surface, The first punch parting surface and the first die parting surface are attached, the second punch parting surface and the second die parting surface are attached, and the third punch parting surface and the third die parting surface are attached, 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, The forming punch includes a punch inner ring, the center of the punch inner ring is provided with a punch cavity, the bottom of the punch inner ring is provided with the first punch parting surface, the second punch parting surface and the third punch parting surface, the height of the third punch parting surface is lower than that of the first punch parting surface, the top of the second punch parting surface is connected with the first punch parting surface, the bottom of the second punch parting surface is connected with the third punch parting surface, and the third punch parting surface extends outward to the edge of the punch inner ring in the width of the second punch parting surface, The forming die includes a die inner ring, the center of the die inner ring is provided with a die cavity, the top of the die inner ring is provided with the first die parting surface, the second die parting surface and the third die parting surface, the height of the third die parting surface is lower than that of the first die parting surface, the top of the second die parting surface is connected with the first die parting surface, the bottom of the second die parting surface is connected with the third die parting surface, and the third die parting surface extends outward to the edge of the die inner ring in the width of the second die parting surface.

2. The forming die for an oil jet body according to claim 1, characterized by The forming punch further includes a punch outer ring, The punch outer ring is sleeved on the outside of the punch inner ring, The positioning sleeves are uniformly arranged on the punch outer ring, and at least two positioning sleeves are arranged.

3. The forming die for an oil jet body according to claim 2, wherein The forming die further includes a die outer ring, The positioning pins are uniformly arranged on the die outer ring, the positioning pins are in interference fit with the die outer ring, and at least two positioning pins are arranged.

4. The forming die for an oil jet body according to claim 3, wherein The positioning pin and the positioning sleeve are in small gap fit, and the height of the positioning pin protruding from the forming die is greater than the height difference between the first punch parting surface and the third punch parting surface.

5. The forming die for an oil jet body according to claim 4, wherein The parting surface of the punch outer ring is the plane where the first punch parting surface is located, the parting surface of the die outer ring is the plane where the first die parting surface is located, and the parting surface of the punch outer ring and the parting surface of the die outer ring are attached.

6. The forming die for an oil jet body according to claim 1, wherein The forming punch and the forming die are in small gap fit.

7. The forming die for an oil jet body according to claim 2, wherein The punch inner ring and the punch outer ring are press-fitted at an angle of a°, a°≤3°, and the punch inner ring and the punch outer ring are interference-fitted, the punch cavity, the second punch parting surface and the inner hole of the positioning sleeve are processed by high-speed milling once.

8. The forming die for an oil jet body according to claim 3, wherein The die inner ring and the die outer ring are press-fitted at an angle of β°, β°≤3°, and the die inner ring and the die outer ring are interference-fitted, the die cavity, the second die parting surface and the inner hole of the positioning pin are processed by high-speed milling once.

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