CN210586755U

CN210586755U - Thermal forming die guiding and positioning device

Info

Publication number: CN210586755U
Application number: CN201921331933.3U
Authority: CN
Inventors: 王勇; 朱荣文; 张立
Original assignee: Chengdu Hongxia Technology Co Ltd
Current assignee: Chengdu Hongxia Technology Co Ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-05-22
Anticipated expiration: 2029-08-16

Abstract

The utility model provides a thermoforming mould guiding orientation device, including last mould, lower mould and guider, guider is including taking tapered direction boss and recess, arranges mould centre or mould both sides in, direction boss and recess direct casting formation on the mould, and the tapering of direction boss and recess is used for cooperating upper and lower template to fix a position and guide. The utility model discloses can effectively solve the mould clearance between the upper and lower mould and vary, make fashioned part form to corrugate easily, crush when serious probably with the problem of mould crushing.

Description

Thermal forming die guiding and positioning device

Technical Field

The utility model belongs to the technical field of the aircraft skin is made, specifically, relate to a thermoforming mould guiding orientation device.

Background

The titanium alloy has the characteristics of high strength, corrosion resistance and the like, and is widely applied to the technical fields of aerospace and the like. The titanium alloy has the characteristics of high yield ratio, small elastic modulus and the like in mechanical property, and reflects that the titanium alloy is narrow in deformation range, easy to crack, large in resilience and difficult to ensure size accuracy in forming, so that the titanium alloy is generally required to be heated to a higher temperature for forming.

The working environment of the titanium alloy aircraft skin part forming die is severe, the forming temperature is generally between 700 ℃ and 800 ℃, and the guiding and positioning structure of the general forming die is easy to lose efficacy at high temperature, so that the die gaps between the upper die and the lower die are unequal, the formed part is easy to have the defects of wrinkling, crushing and the like, and the die can be crushed in serious cases.

The existing die guiding and positioning modes mainly comprise guide plate guiding and guide column guiding, and gaps (generally 0.2-0.5 mm) are reserved at guiding positions for two guiding structures, so that the die is prevented from being clamped at high temperature. The position shifting of different degrees of the die can be inevitably caused after the clearance is reserved, and the forming precision of parts can be influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problem who exists among the above prior art, the utility model provides a hot forming die guiding orientation device is related to, can effectively solve the mould clearance between the upper and lower mould and vary, make fashioned part form corrugate, crush easily, probably press the problem of damaging the mould when serious.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a thermoforming mould guiding orientation device, including last mould, lower mould and guider, guider is including taking tapered direction boss and recess, arranges mould centre or mould both sides in, direction boss and recess direct casting formation on the mould, and the tapering of direction boss and recess is used for cooperating upper and lower template to fix a position and guide.

Preferably, the height of the guide boss is 1.1-1.6 times of the forming depth of the part.

Preferably, the height of the guide boss is 1.3-1.5 times of the forming depth of the part. The reasonable height of boss is convenient for the direction and the location of mould, and the boss height undersize can reduce the spigot surface, if too high, can increase the mould height, increases the mould cost.

In any of the above schemes, preferably, the guiding and positioning angle of the guiding boss is set to be between 5 ° and 25 °.

In any of the above schemes, preferably, the guiding and positioning angle of the guiding boss is set to be between 10 ° and 20 °. The upper die and the lower die are convenient to open and close, if the angle is too small, the side wall is easy to scrape during die opening, so that the die is scratched, and if the angle is too large, the guiding and locking effects can be reduced.

In any of the above schemes, preferably, a gap is left between the top surface and the bottom surface of the guide boss of the upper die and the lower die.

In any of the above schemes, preferably, the gap is set to be 5-10 mm, so that interference is prevented when the upper die and the lower die are closed.

In any of the above schemes, preferably, the upper and lower die materials are medium silicon aluminum nodular cast iron.

In any of the above schemes, preferably, the upper and lower die materials are medium silicon molybdenum nodular cast iron.

In any of the above schemes, preferably, the upper and lower die materials are high-silicon nodular cast iron.

The utility model has the advantages that:

1. the mould adopts the taper guiding and positioning of the boss, the guiding clearance is eliminated, the position shifting of the mould in the forming process is prevented, and the repeated positioning precision of the upper mould and the lower mould is good;

2. in the forming process, the stability of the die is good, the forming consistency of parts can be ensured, and the product quality is improved;

3. the upper die and the lower die of the die do not shift, the molded surface of the die is not crushed during molding, and the service life of the die is prolonged.

Drawings

FIG. 1 is an overall view of a prior art thermoforming mold;

FIG. 2 is a cross-sectional view of the thermoforming mold of FIG. 1 of the prior art;

fig. 3 is an overall structural view of a preferred embodiment according to the present invention;

fig. 4 is a cross-sectional view of the embodiment of fig. 3 according to the present invention.

Fig. 5 is an overall structural view of another preferred embodiment according to the present invention;

wherein, the meaning of each reference number in the figure is as follows:

1. guide plate, 2, gap, 3, upper die, 4, lower die, 5, matching taper, 6 and boss

Detailed Description

In order to make the contents of the present invention more clearly understood, the following description and the accompanying drawings are further described and explained.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Example 1

The existing guiding and positioning modes of the thermal forming die mainly comprise guide plate guiding and guide column guiding, and gaps (generally 0.2-0.5 mm) need to be reserved at guiding positions for two guiding structures, so that the die is prevented from being clamped at high temperature as shown in figures 1-2. The position shifting of different degrees of the die can be inevitably caused after the clearance is reserved, and the forming precision of parts can be influenced.

This embodiment provides different thermoforming mould guiding orientation device, as shown in fig. 3-4, concrete structure includes last mould 3, lower mould 4 and guider, and guider includes tapered direction boss 6 and corresponding recess, and the direction boss is located the mould, and direction boss and recess are directly cast and are formed on the mould, and the tapering of direction boss and recess is used for cooperating upper and lower template to fix a position and guide.

The height of the guide boss is 1.3 times of the forming depth of the part.

The guiding and positioning angle of the guiding lug boss is set to be 10 degrees.

And a gap is reserved between the top surface and the bottom surface of the guide boss of the upper die and the bottom die.

The clearance sets up to 5mm, takes place to interfere when preventing the compound die of upper and lower mould.

When the metal material for manufacturing the mold is exposed to the atmosphere at a high temperature, the surface thereof reacts with oxygen in the air quickly to form an oxide film. In order to stably form a titanium plate, the oxide film formed on the surface of the mold is required to be dense and strong to prevent further aging of the mold material. Common mold materials are: medium silicon aluminum nodular cast iron, medium silicon molybdenum nodular cast iron, high silicon nodular cast iron and stainless steel.

In the embodiment, the upper die and the lower die are made of medium-silicon aluminum nodular cast iron.

Example 2

The embodiment provides a thermoforming mould guiding orientation device, as shown in fig. 5, concrete structure includes last mould 3, lower mould 4 and guider, and guider is including tapered direction boss 6 and corresponding recess of taking, and the direction boss is located the mould both sides, and direction boss and recess are directly cast and are formed on the mould, and the tapering of direction boss and recess is used for cooperating upper and lower template to fix a position and guide.

The height of the guide boss is 1.4 times of the forming depth of the part.

The guiding and positioning angle of the guiding boss is set to be 13 degrees.

The clearance sets up to 8mm, takes place to interfere when preventing the compound die of upper and lower mould.

The upper die and the lower die are made of medium silicon aluminum nodular cast iron.

Example 3

The utility model provides a thermoforming mould guiding orientation device, concrete structure includes mould 3, lower mould 4 and guider, and guider is including tapered direction boss 6 and corresponding recess of taking, and the direction boss is located in the middle of the mould, and direction boss and recess are directly cast and are formed on the mould, and the tapering of direction boss and recess is used for cooperating upper and lower template to fix a position and guide.

The height of the guide boss is 1.5 times of the forming depth of the part.

The guiding and positioning angle of the guiding boss is set to be 15 degrees.

The clearance sets up to 10mm, takes place to interfere when preventing the compound die of upper and lower mould.

The upper die and the lower die are made of high-silicon nodular cast iron.

The thermal forming die provided by the utility model adopts the taper guiding and positioning of the boss, so that the guiding clearance can be eliminated, the die is prevented from shifting in the forming process, and the repeated positioning precision of the upper die and the lower die is good; in the forming process, the stability of the die is good, the forming consistency of parts can be ensured, and the product quality is improved; the upper die and the lower die of the die do not shift, the molded surface of the die is not crushed during molding, and the service life of the die is prolonged.

It should be noted that the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a thermoforming mould guiding orientation device, includes mould, lower mould and guider, its characterized in that, guider is including tapered direction boss and recess, arranges mould centre or mould both sides in, direction boss and recess are directly cast and are formed on the mould, and the tapering of direction boss and recess is used for cooperating upper and lower template to fix a position and guide.

2. The guiding and positioning device of claim 1, wherein the height of the guiding projection is 1.1 to 1.6 times of the forming depth of the part.

3. The guiding and positioning device of claim 1, wherein the height of the guiding projection is 1.3 to 1.5 times of the forming depth of the part.

4. A thermoforming mould as claimed in claim 3, characterised in that the guide boss guide location angle is set between 5 ° and 25 °.

5. A thermoforming mould as claimed in claim 3, characterised in that the guide boss guide location angle is set between 10 ° and 20 °.

6. A thermoforming mold as claimed in claim 5, wherein the top and bottom surfaces of the guide projection of the upper and lower platen are spaced apart.

7. A thermoforming mould as claimed in claim 6, characterised in that the said gap is set at 5-10 mm.

8. A thermoforming mold as claimed in claim 7, wherein the upper and lower mold material is medium silicon aluminum ductile iron.

9. The apparatus of claim 7, wherein the upper and lower molds are made of medium silicon molybdenum ductile iron.

10. A thermoforming mold as claimed in claim 7, wherein the upper and lower mold material is high silicon ductile iron.