Mould pressing die for integrally forming control surface
Technical Field
The application relates to the field of control surface molds, in particular to a mold pressing mold for integrally forming a control surface.
Background
The control surface is a small movable wing surface arranged at the outer side of the rear edge of the wing tip of the aircraft, is a main operation control surface of the aircraft, and can make the aircraft roll by a rolling moment generated by the differential deflection of the left control surface and the right control surface controlled by a pilot.
Referring to fig. 1 and 2, the control surface 1 generally comprises a skin 11, an inner layer foam 12, a mounting angle rib 14 and two connecting rotating shafts 13, wherein the skin 11 is formed by solidifying prepreg, the skin 11 is coated on the inner layer foam 12, two ends of the inner layer foam 12 in the length direction are respectively connected with a wing through one connecting rotating shaft 13, the mounting angle rib 14 is fixed on the skin 11, an angle rib connecting part 141 on the mounting angle rib 14 is exposed outside the skin 11, and an angle rib connecting hole 142 for connecting the wing is arranged on the angle rib connecting part 141.
The connecting rotating shaft and the mounting angle rib of the control surface product have higher requirements on position accuracy, so that the mold needs to accurately position the positions of the connecting rotating shaft and the mounting angle rib when the control surface product is produced, and the control surface product can be accurately mounted and fixed with the wing. However, the control surface products are assembled after the skin, the installation angle ribs and other parts are produced and molded by using a plurality of dies, a large number of metal parts and standard parts are needed in the production process, the cost is high, the assembly process is complex, and the assembly precision is poor.
Disclosure of utility model
In order to realize the integrated forming of the control surface with higher accuracy, the application provides a die pressing die for integrally forming the control surface.
The application provides a mould pressing mould for integrally forming a control surface, which adopts the following technical scheme:
The die pressing die for integrally forming the control surface comprises an upper die, a middle die and a lower die which are matched with each other in a die clamping manner, wherein a cavity is formed among the upper die, the middle die and the lower die, and the inner side wall of the cavity is adapted to the shape of the control surface;
The lower core mold comprises a rotating shaft positioning block and a connecting block, wherein the rotating shaft positioning block is arranged on the lower mold, the connecting block is arranged on the rotating shaft positioning block and is matched with the rotating shaft positioning block to position and connect a rotating shaft, an angular rib positioning square hole for accommodating an angular rib connecting part is formed in the lower mold, and an angular rib positioning piece for positioning the angular rib connecting part is arranged on the lower mold.
By adopting the technical scheme, the integrated forming of the control surface is realized, complicated assembly procedures are avoided, the forming efficiency of the control surface product is improved, the accurate positioning of the installation angle rib and the connecting rotating shaft can be ensured, and the forming precision of the control surface is improved.
In a specific implementation manner, the first positioning semicircular groove and the connecting groove are formed in the rotating shaft positioning block, the second positioning semicircular groove and the connecting protruding block are arranged on the connecting block, the connecting protruding block is inserted into the side wall of the connecting groove, and the first positioning semicircular groove is matched with the second positioning semicircular groove to accommodate the connecting rotating shaft.
In a specific implementation manner, the first positioning semicircular groove and the second positioning semicircular groove are semicircular with equal inner diameters in the vertical direction, and the inner diameter of one end, close to the inner side wall of the cavity, of any one positioning semicircular groove and/or one positioning semicircular groove is increased, and a step part is formed.
By adopting the technical scheme, the accurate positioning of the installation rotating shaft is realized through the first positioning semicircular groove and the second positioning semicircular groove, and the connecting rotating shaft can be adaptively inserted into the side walls of the first positioning semicircular groove and the second positioning semicircular groove through the step part.
In a specific implementation manner, each rotating shaft positioning block is slidably arranged on the lower die, and the moving direction of each rotating shaft positioning block is parallel to the length direction of the inner side wall of the cavity.
In a specific implementation manner, at least one moving pin is arranged on the side wall of the rotating shaft positioning block, which faces the lower die, and a core die moving groove for moving the moving pin is arranged on the lower die.
By adopting the technical scheme, the rotating shaft positioning block is in sliding connection with the lower die, so that lateral pressure is provided for forming the control surface product, and the forming effect of the control surface product is improved.
In a specific implementation manner, the inner diameter of one end of the square hole for positioning the corner rib away from the cavity is increased and a reserved groove is formed, the corner rib connecting part penetrates through the square hole for positioning the corner rib to extend into the side wall of the reserved groove, and the corner rib positioning piece is arranged in the side wall of the reserved groove to position the corner rib connecting part.
In a specific implementation manner, the corner rib positioning piece comprises a fixed matching block and a fixed pin, the fixed matching block is arranged in the side wall of the reserved groove, a positioning matching hole is formed in the fixed matching block, and the fixed pin penetrates through the corner rib connecting hole to be inserted into the side wall of the positioning matching hole.
By adopting the technical scheme, the accurate positioning of the installation angle rib is realized.
In a specific embodiment, a mounting screw is connected between the middle die and the lower die, and a mounting nut is connected to the mounting screw in a threaded manner.
Through adopting above-mentioned technical scheme, make well mould and lower mould fixed connection, the quick installation and the quick dismantlement of well mould of being convenient for.
In a specific implementation manner, a plurality of guide sleeves are arranged on the upper die, and guide posts are arranged on the lower die and/or the middle die corresponding to any guide sleeve.
By adopting the technical scheme, the upper die, the lower die and the middle die are accurately matched, and the forming accuracy of the control surface is improved.
In a specific implementation manner, at least one temperature measuring hole is respectively arranged on the upper die and the lower die, and the temperature measuring holes are communicated with the cavity.
Through adopting above-mentioned technical scheme, the operating personnel of being convenient for detects the die cavity inside temperature, guarantees that solidification temperature is suitable, and then helps guaranteeing the shaping effect.
In summary, the present application includes at least one of the following beneficial technical effects:
1. The integrated forming of the control surface is realized, complicated assembly procedures are avoided, the forming efficiency of the control surface product is improved, the accurate positioning of the installation angle rib and the connecting rotating shaft can be ensured, and the forming precision of the control surface is improved;
2. The die assembly accuracy among the upper die, the middle die and the lower die is high, and the die assembly or disassembly can be fast and conveniently performed, so that the production efficiency and the demolding efficiency of the control surface product are improved.
Drawings
FIG. 1 is a schematic view of the overall structure of a control surface product according to the background of the application;
FIG. 2 is a schematic diagram of an explosion structure of a control surface product according to the background of the application;
FIG. 3 is a schematic diagram of an explosion structure of a mold for integrally forming a control surface according to an embodiment of the present application;
FIG. 4 is an enlarged schematic view of portion A of FIG. 3;
FIG. 5 is a schematic partial cross-sectional view of an embodiment of the present application showing an angular rib retainer;
FIG. 6 is a schematic view showing a partial structure of a spindle positioning block according to an embodiment of the present application;
FIG. 7 is a schematic view showing the structure of a spindle positioning block according to an embodiment of the present application;
fig. 8 is a schematic structural view of a connection block according to an embodiment of the present application.
Reference numerals illustrate:
1. The foam molding machine comprises a control surface, 11, a skin, 12, an inner foam layer, 13, a connecting rotating shaft, 14, a mounting angle rib, 141, an angle rib connecting part, 142, an angle rib connecting hole, 2, an upper die, 21, a guide sleeve, 3, a middle die, 31, a threaded hole, 4, a lower die, 41, an angle rib positioning square hole, 42, an angle rib positioning piece, 421, a fixed matching block, 4211, a positioning matching hole, 422, a fixed pin, 43, a core mold moving groove, 44, a reserved groove, 5, a lower core mold, 51, a rotating shaft positioning block, 511, a moving pin, 512, a positioning semicircular groove I, 513, a connecting groove, 52, a connecting block, 521, a positioning semicircular groove II, 522, a connecting lug, 6, an upper core mold, 7, a guide pillar, 8, a temperature measuring hole, 9 and a step part.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs.
The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Also, unless the context clearly indicates otherwise, singular forms "a," "an," or "the" and similar terms do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "comprises," "comprising," or the like are intended to cover a feature, integer, step, operation, element, and/or component recited as being present in the element or article that "comprises" or "comprising" does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. "up", "down", "left", "right" and the like are used only to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.
The embodiment of the application discloses a mould pressing mould for integrally forming a control surface. The application is described in further detail below with reference to fig. 3-8.
Referring to fig. 3, the mold for integrally forming the control surface includes an upper mold 2, a middle mold 3, and a lower mold 4 which are matched with each other in a mold clamping manner, the middle mold 3 is fixed at one end of the lower mold 4 in the width direction, and a cavity is formed between the upper mold 2, the middle mold 3, and the lower mold 4, and is adapted to the shape of the control surface. The lower die 4 is provided with a lower core die 5 respectively on two sides of the length direction of the die cavity, the upper die 2 is provided with an upper core die 6 respectively on two sides of the length direction of the die cavity, and the upper core die 6 and the lower core die 5 are correspondingly arranged. After the die assembly, one end of the upper die 2 in the width direction of the lower surface is attached to the upper surface of the lower die 4, the other end of the upper die 2 in the width direction of the lower surface is attached to the upper surface of the middle die 3, and the upper core dies 6 are correspondingly attached to the lower core dies 5 in a one-to-one abutting mode. The lower core mold comprises a rotating shaft positioning block 51 and a connecting block 52, and the moving block is matched with the connecting block 52 to position and connect the rotating shaft 13.
Referring to fig. 3 to 5, the lower die 4 is provided with a corner rib positioning square hole 41 for receiving a corner rib connecting portion, and the lower die 4 is provided with a corner rib positioning piece 42 for positioning the mounting corner rib 14.
The method comprises the steps of paving prepreg on the inner side wall of a cavity of a lower die 4, inserting corner rib connecting parts for installing corner ribs into corner rib positioning square holes 41, fixing the installation corner ribs 14 through corner rib positioning pieces 42, installing two rotating shaft positioning blocks 51 on the lower die 4, respectively installing two connecting rotating shafts on inner foam, placing the inner foam 12 on the prepreg, correspondingly arranging the connecting rotating shafts on the rotating shaft positioning blocks 51, fixing the connecting blocks 52 and the movable connecting blocks 52 in a matched mode to position the connecting rotating shafts 13, installing a middle die 3 on the lower die 4 by an operator, paving the prepreg on the inner side wall of the cavity of an upper die 2, assembling and closing the upper die 2 and the lower die 4, transferring the die to a press by the operator after the die assembly is completed, heating and solidifying, sequentially disassembling and separating the upper die 2, the middle die 3 and the two connecting blocks 52, and demolding to obtain a control surface product.
Referring to fig. 5, a reserved groove 44 is formed on the side wall of the lower die 4 and located at the square hole 41 for positioning the corner rib, the reserved groove 44 is communicated with the square hole 41 for positioning the corner rib, and the corner rib positioning piece 42 is arranged in the side wall of the reserved groove 44. The corner rib attachment portion extends through the corner rib locating square hole 41 to extend into the side wall of the pre-groove 44, and the corner rib locating piece 42 is connected with the corner rib attachment portion to locate the mounting corner rib 14. The corner rib positioning member 42 includes a fixing block 421 and a fixing pin 422, the fixing block 421 is located in the sidewall of the reserved groove 44, a positioning hole 4211 is provided on the fixing block 421 corresponding to the corner rib connecting hole 142, and the fixing pin 422 penetrates the corner rib connecting hole 142 and is inserted into the sidewall of the positioning hole 4211.
Referring to fig. 6, two moving pins 511 are disposed on a side wall of each rotating shaft positioning block 51 facing the lower mold 4, a core mold moving groove 43 for moving the moving pins 511 is cooperatively disposed on the lower mold 4, each moving pin 511 is correspondingly slidably connected in a side wall of the corresponding core mold moving groove 43, and a moving direction of the moving pin 511 is parallel to a length direction of an inner side wall of the cavity.
Referring to fig. 7 and 8, a first positioning half groove 512 and two connecting grooves 513 are formed in each of the spindle positioning blocks 51, a second positioning half groove 521 is formed in each of the connecting blocks 52 corresponding to the first positioning half groove 512, and a connecting protrusion 522 is formed corresponding to the connecting groove 513. When the connecting block 52 is fixed on the rotating shaft positioning block 51, each connecting projection 522 is correspondingly inserted into the side wall of the corresponding connecting groove 513. The first positioning semicircular groove 512 and the second positioning semicircular groove 521 are semicircular with the same inner diameter, and the first positioning semicircular groove 512 and the second positioning semicircular groove 521 are matched to accommodate the connecting rotating shaft 13. Each positioning half groove one 512 and each positioning half groove two 521 have an increased inner diameter near one end of the cavity and are formed with a stepped portion 9.
Referring to fig. 3, a plurality of threaded holes 31 are correspondingly formed in the middle die 3 and the lower die 4, a mounting screw (not shown) is correspondingly and screwed at each threaded hole, the middle die 3 is fixedly connected with the lower die 4 through the mounting screw, and a mounting nut (not shown) is connected with the mounting screw in a matched threaded manner. The middle die 3 and the lower die 4 are detachably connected through the mounting screw and the mounting nut, so that the middle die 3 can be quickly mounted and quickly dismounted.
Referring to fig. 3, four guide sleeves 21 are embedded in the upper die 2. The lower die 4 and the middle die 3 are respectively provided with a guide post 7 corresponding to the guide sleeve 21. During die assembly, the guide post 7 is matched and inserted into the guide sleeve 21, so that the upper die 2 can be accurately positioned for die assembly.
Referring to fig. 3, four temperature measuring holes 8 are formed in each of the upper die 2 and the lower die 4. During mould pressing, an operator can monitor the temperature in the cavity through the temperature measuring holes 8, and the accuracy of the temperature of the mould is ensured.
The implementation principle of the die-pressing die for integrally forming the control surface in the embodiment of the application is as follows:
The operator lays the prepreg on the inner side wall of the cavity of the lower die 4, penetrates the corner rib connecting part of the installation corner rib 14 into the corner rib positioning square hole 41, installs the fixed matching block 421 into the reserved groove 44, enables the positioning matching hole 4211 to correspond to the corner rib connecting hole 142, and inserts the fixed pin 422 into the side wall of the positioning matching hole 4211 after penetrating the corner rib connecting hole 142 so as to fix the installation corner rib 14;
Two rotating shaft positioning blocks 51 are arranged on the lower die 4, the two rotating shaft positioning blocks 51 are moved in the direction far away from the prepreg, the connecting rotating shafts 13 are respectively arranged at the two ends of the length direction of the inner layer foam 12, and then the inner layer foam 12 is arranged on the prepreg;
The operator then places the middle die 3 on the lower die 4, connects the middle die 3 with the lower die 4 through a mounting screw, and tightens a mounting nut to fix the middle die 3 with the lower die 4;
An operator lays another prepreg on the inner side wall of the cavity of the upper die 2, and then assembles the upper die 2 onto the lower die 4 through the matched positioning of the guide post 7 and the guide sleeve 21 to complete the die assembly of the die;
After the die assembly is completed, an operator transfers the die to a press for heating and curing, then the upper die 2, the middle die 3, the two connecting blocks 52 and the two rotating shaft positioning blocks 51 are disassembled and separated in sequence, and a control surface product is obtained after demoulding.
The above embodiments are not intended to limit the scope of the application, so that the equivalent changes of the structure, shape and principle of the application are covered by the scope of the application.