CN111746002B

CN111746002B - Hat-shaped stringer performing device

Info

Publication number: CN111746002B
Application number: CN202010628784.8A
Authority: CN
Inventors: 谈源; 张俭; 唐海波
Original assignee: Changzhou Xinchuang Aviation Technology Co ltd
Current assignee: Changzhou Xinchuang Aviation Technology Co ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-04-30
Anticipated expiration: 2040-07-02
Also published as: CN111746002A

Abstract

The invention relates to the technical field of composite material processing, in particular to a cap-shaped stringer performing device, which comprises: the support frame comprises a support base and a gantry frame, the gantry frame is fixed on the support base, and a worm gear lead screw lifter is arranged at the top of the gantry frame; the supporting beam is arranged in the gantry frame, is connected with the worm wheel screw rod lifter and can move in the height direction under the driving of the worm wheel screw rod lifter; the upper die is connected with the bottom of the supporting beam and moves along with the supporting beam; the lower die is fixed on the supporting base and is arranged opposite to the upper die; the upper die and the lower die are arranged in a split manner in the width direction and can be movably arranged in the width direction. Through the arrangement, the thickness of the hat-shaped stringer on the inclined plane can be adjusted under the condition that the thickness of the laminated board in the horizontal direction is kept unchanged, the effect that the thickness of the inclined plane is consistent with the thickness of the laminated board in the horizontal direction is finally achieved, and the quality and the consistency of products are improved.

Description

Hat-shaped stringer performing device

Technical Field

The invention relates to the technical field of composite material processing, in particular to a cap-shaped stringer performing device.

Background

Hat stringers are used to secure metal fuselage sections and metal wing skins on commercial and military aircraft. The composite material is named due to the fact that the middle of the composite material is provided with a convex cap shape, the composite material is an ideal aviation structural material, and the composite material becomes a main structural material of a new generation of aircraft body at present.

In the prior art, the hat-shaped stringer is mostly processed by hot die pressing, the die specifically comprises an upper die and a lower die, the upper die and the lower die are integrated, and when the thickness of a preformed piece needs to be adjusted, the distance between the upper die and the lower die can only be adjusted.

However, when the thickness of the preform is adjusted by the above-mentioned mold, as shown in fig. 1, the thickness on the inclined surface of the middle protrusion portion is not consistent with the thickness of the flat portions on both sides, which affects the strength uniformity of the final molded article, so that the adjustment can be performed only by replacing a different mold.

In view of the above problems, the present designer is actively making research and innovation based on the practical experience and professional knowledge that is abundant for many years in the engineering application of such products, in order to create a cap-shaped stringer performing device, which is more practical.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: provided is a cap stringer preforming device which can realize uniform thickness adjustment of a cap stringer preforming member.

In order to achieve the purpose, the invention adopts the technical scheme that: a hat stringer preforming device comprising:

the support frame comprises a support base and a gantry frame, the gantry frame is fixed on the support base, and a worm gear lead screw lifter is arranged at the top of the gantry frame;

the supporting beam is arranged in the gantry frame, is connected with the worm gear lead screw lifter and can move in the height direction under the driving of the worm gear lead screw lifter;

the upper die is connected with the bottom of the supporting beam and moves along with the supporting beam;

the lower die is fixed on the supporting base and is arranged opposite to the upper die;

the upper die and the lower die are arranged in a split manner in the width direction and can be movably arranged in the width direction.

Further, the upper die comprises an upper middle die and two upper side dies, the lower die comprises a lower middle die and two lower side dies, and the support beam comprises a main beam and two side beams;

the two side beams are connected with two side walls in the width direction of the main beam;

the two upper side molds are movably connected with the bottoms of the side beams, and the upper middle molds are fixed at the bottoms of the main beams;

the side beam is provided with a first transverse driving piece, and a driving end of the first transverse driving piece is connected with the upper side die;

the lower middle die is arranged opposite to the upper middle die, and the two lower side dies are movably arranged on two sides of the lower middle die;

and a second transverse driving member is arranged at the bottom of the supporting beam and connected with the lower side die.

Further, the upper die further comprises a first fixing plate, a first heating plate and a first sliding assembly;

first hot plate with the upper surface fixed connection of upper die, first fixed plate with the upper surface connection of first hot plate, first sliding assembly connects the curb girder bottom with between the first fixed plate top, so that the confession the curb girder with relative slip takes place between the first fixed plate.

Further, a fixing cavity is formed in the first fixing plate, a clamping piece fixed on the heating plate, a clamping piece matched with the clamping piece to be fixed in the clamping piece, and a clamping driving piece fixed on the fixing cavity and used for driving the clamping piece to move towards the clamping piece or move reversely are arranged in the fixing cavity; the fixing cavity is formed by the first fixing plate protruding upwards, and the clamping driving piece is connected with the clamping piece and driven towards the clamping piece.

Furthermore, a vertical fixing frame and a first connecting piece are arranged on the side beam, the first transverse driving piece is fixed on the vertical fixing frame, one end of the first connecting piece is connected with the driving end of the first transverse driving piece, and the other end of the first connecting piece is connected with the first fixing plate.

Further, an airfoil supporting plate, a second sliding assembly and a lifting driving piece are arranged above the main beam;

two side surfaces of the second sliding assembly, which slide relatively, are respectively connected with the main beam and the side beams so that the side beams and the main beam can slide relatively in the height direction;

the wing section backup pad is fixed the top of girder and along the width direction symmetry setting of girder, the lift driving piece symmetry is provided with two and fixes respectively the both sides of wing section backup pad, the drive end of lift driving piece with the curb girder is connected.

Further, the lower die further comprises a second fixing plate and a second heating plate, the second heating plate is fixed to the bottom of the lower die, a third moving assembly is arranged between the second fixing plate and the second heating plate, and the third moving assembly is arranged towards the length direction of the second fixing plate.

Furthermore, the bottom of the second fixed plate is provided with a fourth moving assembly, and two relatively movable end faces of the fourth moving assembly are respectively connected with the bottom of the second fixed plate and the supporting base;

the supporting base is provided with a notch, the supporting base is provided with a driving end, the driving end is connected with one end of a first transverse driving piece, the supporting base is provided with a notch, and the driving end is connected with the first fixing plate.

The invention has the beneficial effects that: according to the invention, the upper die and the lower die are arranged in a split manner in the width direction, and the split parts are arranged in a movable manner in the width direction, so that the thickness on the inclined surface of the hat-shaped stringer can be adjusted under the condition of keeping the thickness of the laminated board in the horizontal direction unchanged, the effect that the thickness on the inclined surface is consistent with the thickness in the horizontal direction is finally achieved, the quality and consistency of products are improved, and the adjustment of the thickness of the preformed piece can be realized without replacing the dies.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a hat stringer pre-formed to adjust thickness in accordance with the background of the present invention;

FIG. 2 is a schematic diagram of a split upper and lower mold for adjusting the thickness of a preform according to an embodiment of the present invention;

FIG. 3 is a front view of a hat stringer pre-forming device in accordance with an embodiment of the present invention;

FIG. 4 is a sectional view taken along line A of FIG. 3 in accordance with an embodiment of the present invention;

FIG. 5 is a schematic view of the construction of a hat stringer pre-forming device according to an embodiment of the present invention (with the support brackets omitted);

FIG. 6 is a side view of an upper mold and support beam in an embodiment of the invention;

FIG. 7 is an enlarged view of a portion of FIG. 6 at B in accordance with an embodiment of the present invention;

fig. 8 is a schematic view illustrating a coupling structure of a first heating plate and a first fixing plate according to an embodiment of the present invention;

FIG. 9 is a schematic view of the connection structure of the engaging member and the locking member according to the embodiment of the present invention;

FIG. 10 is a schematic perspective view of an upper mold and a support beam according to an embodiment of the present invention.

Reference numerals: 10. a support frame; 11. a gantry frame; 12. a support base; 13. worm screw elevator 20, support beam; 21. a main beam; 211. an airfoil support plate; 212. a second slide assembly; 213. a lifting drive member; 22. a side beam; 221. a vertical fixing frame; 222. a first connecting member; 213. a lifting drive member; 30. an upper die; 31. an upper middle die; 32. an upper side die; 33. a first transverse drive member; 34. a first fixing plate; 341. a fixed cavity; 342. a fastener; 343. a fastener; 344. clamping the driving piece; 35. a first heating plate; 36. a first slide assembly; 40. a lower die; 41. a lower middle die; 42. a lower side die; 43. a second transverse drive; 44. a second fixing plate; 45. a second heating plate; 46. a third moving assembly; 47. a fourth moving assembly; 48. a second connecting member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The hat stringer pre-forming apparatus shown in fig. 2 to 10 includes a support frame 10, a support beam 20, an upper mold 30, and a lower mold 40, wherein:

the support frame 10 comprises a support base 12 and a gantry frame 11, the gantry frame 11 is fixed on the support base 12, and a worm gear screw rod lifter 13 is arranged at the top of the gantry frame 11; a space for the up-and-down movement of the support beam 20 is formed above the support base 12 by the arrangement of the gantry frame 11;

the supporting beam 20 is arranged in the gantry frame 11, is connected with the worm screw lifter 13, and is driven by the worm screw lifter 13 to move in the height direction; the two ends of the support beam 20 are guided by the pulleys and the guide rails, so that the moving accuracy of the support beam 20 is improved.

The upper die 30 is connected with the bottom of the support beam 20 and moves along with the support beam 20;

the lower die 40 is fixed on the support base 12 and is arranged opposite to the upper die 30; as shown in fig. 4, the upper die 30 is disposed at the upper side, the lower die 40 is disposed at the lower side opposite to the upper die 30, and during the specific processing, the laminated board is placed between the upper die 30 and the lower die 40, and the support beam 20 is driven to be pressed down by the worm screw lifter 13, so that the laminated board is pressed and fixed.

The upper mold 30 and the lower mold 40 are provided separately in the width direction and are movable in the width direction. As shown in the schematic view of fig. 2, the adjustment of the thickness of the inclined side walls of the middle protrusions of the hat stringer is made by dividing the upper and lower molds 40 in the width direction and by moving the divided molds provided at both sides.

In the above embodiment, the upper die 30 and the lower die 40 are separately arranged in the width direction, and the separate parts are movably arranged in the width direction, so that the thickness on the inclined surface of the hat-shaped stringer can be adjusted while the thickness of the laminated board in the horizontal direction is kept unchanged, the effect that the thickness on the inclined surface is consistent with the thickness in the horizontal direction is finally achieved, the quality and consistency of products are improved, and the adjustment of the thickness of the preformed piece can be realized without replacing the dies when the thickness of the preformed piece needs to be adjusted.

Specifically, as shown in fig. 5, the upper mold 30 includes an upper middle mold 31 and two upper side molds 32, the lower mold 40 includes a lower middle mold 41 and two lower side molds 42, and the support beam 20 includes a main beam 21 and two side beams 22;

the two side beams 22 are connected with two side walls in the width direction of the main beam 21; the width direction herein means a direction perpendicular to the longitudinal direction of the hat stringer at the time of processing on a horizontal plane;

two upper side dies 32 are movably connected with the bottoms of the side beams 22, and an upper middle die 31 is fixed at the bottom of the main beam 21; the movable arrangement here is implemented in many ways, for example by means of trolleys and rails, by means of slides and sliding rails, etc.

The side beam 22 is provided with a first transverse driving piece 33, and the driving end of the first transverse driving piece 33 is connected with the upper side die 32; the drive means here may be a pneumatic cylinder, a hydraulic cylinder or an electric motor screw, etc. in a manner known to the person skilled in the art.

The lower middle mold 41 is disposed opposite to the upper middle mold 31, and two lower side molds 42 are movably disposed at both sides of the lower middle mold 41;

the bottom of the support beam 20 has a second transverse driving member 43, and the second transverse driving member 43 is connected to the lower side mold 42. It is to be noted here that the movable arrangement of the lower weekend and the construction of the second transverse drive 43 are the same as described above and will not be described in further detail here.

With reference to fig. 5, the upper mold 30 further includes a first fixing plate 34, a first heating plate 35 and a first sliding assembly 36;

the first heating plate 35 is fixedly connected with the upper surface of the upper side die 32, the first fixing plate 34 is connected with the upper surface of the first heating plate 35, and the first sliding assembly 36 is connected between the bottom of the side beam 22 and the top of the first fixing plate 34, so that the side beam 22 and the first fixing plate 34 can slide relatively. The first sliding assembly 36 refers to a combination of a sliding block and a sliding rail, wherein the sliding block is arranged on the sliding rail in a relatively movable manner, any one of two sides of the sliding block and the sliding rail is connected with the first fixing plate 34, and the other side of the sliding block and the sliding rail is connected with the bottom of the side beam 22; in addition, the third moving assembly 46 and the fourth moving assembly 47 of the second sliding assembly 212 in the following sections are the same as the above connection manner, and the description of the corresponding sections is omitted.

As shown in fig. 6 to 9, regarding the connection manner of the first fixing plate 34 and the first heating plate 35, a quick connection manner is adopted in the embodiment of the present invention, specifically, as shown in fig. 6 and 7, a fixing cavity 341 is provided on the first fixing plate 34, an engaging member 342 fixed on the heating plate, a clamping member 343 engaged with the engaging member 342 to be fixed in the engaging member 342, and an engaging driving member 344 fixed on the fixing cavity 341 for driving the clamping member 343 to move toward the engaging member 342 or move reversely are provided in the fixing cavity 341; the fixing cavity 341 is formed by the first fixing plate 34 protruding upward, and the engaging driving member 344 is connected to the card 343 and driven toward the card 343. With continued reference to fig. 6, at the fixing chamber 341, the side member 22 is cut off, and the space can be reasonably utilized by this arrangement; as shown in fig. 9, the engaging member 342 is a fixing block having an upper wall and a side wall, the upper wall and the side wall protrude from the side of the fixing block, the clamping member 343 is a structure having a rotating wheel on the side wall, the engaging driving member 344 is a cylinder, the cylinder drives the rotating wheel to enter a space enclosed by the upper wall and the side wall, the heating plate is fixed by the contact of the rotating wheel and the upper wall, and the upper wall is wedge-shaped, and the thickness of the upper wall becomes thicker and thicker during the process of the rotating wheel moving toward the upper wall, so that the pressure between the first heating plate 35 and the first fixing plate 34 becomes larger and larger, thereby firmly fixing the first fixing plate 34 and the first heating plate 35, and by this arrangement, the first fixing plate 34 is easily and rapidly detached and installed. And through this kind of setting, both realized measuring and the lateral sliding between the first fixed plate 34, realized the quick assembly disassembly between first fixed plate 34 and the first hot plate 35 again, simultaneously, still through the improvement to curb girder 22, further effectively utilized the space, reduced the occupied space size of device, reduced the waste of resources.

As shown in fig. 10, the side beam 22 has a vertical fixing frame 221 and a first connecting member 222, the first transverse driving member 33 is fixed on the vertical fixing frame 221, and one end of the first connecting member 222 is connected to the driving end of the first transverse driving member 33, and the other end is connected to the first fixing plate 34. It should be noted that the first transverse driving member 33 is a screw rod structure driven by a motor, and the first connecting member 222 is provided with a thread structure corresponding to the screw rod, and the screw rod is driven by the motor to rotate, so as to drive the first connecting member 222.

In the embodiment of the invention, the relative height between the main beam 21 and the side beam 22 can be adjusted, and the main beam 21 is provided with a wing profile support plate 211, a second sliding assembly 212 and a lifting driving member 213 above;

two side surfaces of the second sliding assembly 212 which slide relatively are respectively connected with the main beam 21 and the side beam 22, so that the side beam 22 and the main beam 21 can slide relatively in the height direction;

the wing section supporting plates 211 are fixed at the top end of the main beam 21 and symmetrically arranged along the width direction of the main beam 21, two lifting driving pieces 213 are symmetrically arranged and respectively fixed at two sides of the wing section supporting plates 211, and the driving ends of the lifting driving pieces 213 are connected with the side beams 22. It should be noted that the lifting driving member 213 may be a pneumatic cylinder or a hydraulic cylinder, and the distance between the upper middle mold 31 and the upper side mold 32 in the height direction can be adjusted by the above arrangement. And the wing section support plate 211 is arranged to be vertically arranged upwards and then bent towards the horizontal direction like wings, so that the fixing of the lifting driving member 213 is realized on the one hand, and a space is provided for the movement of the side beam 22 on the other hand.

Referring to fig. 5, the lower mold 40 further includes a second fixing plate 44 and a second heating plate 45, the second heating plate 45 is fixed at the bottom of the lower mold 42, a third moving assembly 46 is disposed between the second fixing plate 44 and the second heating plate 45, and the third moving assembly 46 is disposed toward the length direction of the second fixing plate 44. Through the setting of third removal subassembly 46 for second hot plate 45 can finely tune in length direction, thereby overcomes expend with heat and contract with cold effect, makes the final shaping effect of product better.

With reference to fig. 5, the bottom of the second fixing plate 44 is provided with a fourth moving assembly 47, and two relatively movable end surfaces of the fourth moving assembly 47 are respectively connected to the bottom of the second fixing plate 44 and the supporting base 12; namely, the slide block is fixed at the bottom of the second fixing plate 44, and the slide rail is fixed on the support base 12, or the slide rail is fixed at the bottom of the second fixing plate 44, and the slide block is fixed on the support base 12, thereby realizing the movement of the second fixing plate 44 in the width direction;

further, a second connecting member 48 is included, the second transverse driving member 43 is fixed at the bottom of the supporting base 12, the driving end of the second transverse driving member 43 is connected with one end of the second connecting member 48, and the second connecting member 48 passes through the notch formed on the supporting base 12 and then is connected with the second fixing plate 44. It should be noted here that the second fixing plate 44 and the second transverse driving member 43 are connected by a screw nut of a motor, the rotation of the motor drives the screw rod to rotate, and the rotation of the screw rod drives the second connecting member 48 engaged with the screw rod to move left and right. It should be noted here that, when the thickness adjustment is specifically performed, the upper die 32 and the lower die 42 move synchronously, so that the preform between the upper and lower dies 40 is uniformly spread without wrinkles, thereby improving the consistency of the quality of the finished product.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A hat stringer preforming device, comprising:

the upper die and the lower die are arranged in a split manner in the width direction and can be movably arranged in the width direction;

the upper die comprises an upper middle die and two upper side dies, the lower die comprises a lower middle die and two lower side dies, and the supporting beam comprises a main beam and two side beams;

the lower middle die and the upper middle die are arranged oppositely, and the two lower side dies are movably arranged on two sides of the lower middle die;

the bottom of the support beam is provided with a second transverse driving piece which is connected with the lower side die;

the upper die further comprises a first fixing plate, a first heating plate and a first sliding assembly;

the first heating plate is fixedly connected with the upper surface of the upper side die, the first fixing plate is connected with the upper surface of the first heating plate, and the first sliding assembly is connected between the bottom of the side beam and the top of the first fixing plate so as to enable the side beam and the first fixing plate to slide relatively;

the first fixing plate is provided with a fixing cavity, a clamping piece fixed on the first heating plate, a clamping piece matched with the clamping piece to be fixed in the clamping piece and a clamping driving piece fixed on the fixing cavity and used for driving the clamping piece to move towards the clamping piece or move reversely are arranged in the fixing cavity; the fixing cavity is formed by the first fixing plate protruding upwards, and the clamping driving piece is connected with the clamping piece and driven towards the clamping piece.

2. The apparatus of claim 1, wherein the side beams have a vertical mount and a first connector attached thereto, the first transverse driver being attached to the vertical mount, the first connector having one end connected to the drive end of the first transverse driver and the other end connected to the first mounting plate.

3. The apparatus of claim 1, wherein the main beam has an airfoil support plate, a second slide assembly, and a lift drive above the main beam;

4. The apparatus of claim 1, wherein the lower mold further comprises a second fixing plate fixed to a bottom of the lower mold, and a second heating plate having a third moving unit therebetween, the third moving unit being disposed toward a length direction of the second fixing plate.

5. The apparatus of claim 4, wherein the second fixed plate has a fourth movable member at a bottom thereof, and two relatively movable end surfaces of the fourth movable member are connected to the second fixed plate bottom and the support base, respectively;