Multifunctional rotary body prefabricated body inner wall needling device

Abstract

The invention discloses a multifunctional rotary body prefabricated body inner wall needling device which comprises a rack, a hollow clamping rotary disc is installed at the bottom of the rack, a prefabricated body buffering supporting mold is fixed to the hollow clamping rotary disc, a needling supporting beam is installed in the prefabricated body buffering supporting mold, and a needling mechanism is movably arranged in the middle of the needling supporting beam. The two ends of the needling supporting beam penetrate out of the prefabricated body buffering supporting mold and the hollow clamping rotary disc to be connected with an X-axis moving assembly arranged on the machine frame. By means of the design, the technical problems that the outer wall needling connection density of an existing rotary body prefabricated body is lower than the inner wall needling connection density, composite material layering can be caused under the severe flight environment, and needling of a cylindrical part prefabricated body and a conical part prefabricated body cannot be completed on the same device at the same time are solved.

Description

Technical Field

[0001] The invention relates to the field of non-woven fabric preform production, and in particular to a multifunctional rotating preform inner wall needle punching device. Background Art

[0002] The fiber preform 100 is the main reinforcement structure of the heat-resistant composite material. With the widespread application of composite materials in aircraft, the demand for fiber preforms 100 has gradually increased. At present, there are many production equipment for fiber preforms 100, mainly including flat preform needling equipment and rotary preform needling equipment. The rotary preform needling equipment is divided into cylindrical preform needling equipment and conical preform needling equipment. The working principle of the preform needling product is to use needles to connect the unit layer fabrics between layers, and each unit layer is needling once. Since the needling depth is much greater than the thickness of each unit layer fabric, the first layer of the unit layer has the highest needling density, and the needling density of the unit layers of the subsequent layers decreases successively. After the needling is completed, the unit layer of the last layer of the preform product has only one needling connection density.

[0003] At present, all types of needling equipment for rotating body preforms have the needling device arranged on the outer wall side of the rotating body. In this way, the needling connection density of the outer wall of the rotating body preform is obviously lower than that of the inner wall. When the aircraft is flying, the outer wall of the preform is the part that is in direct contact with the air flow, which will lead to delamination of the composite material under harsh flight environment.

[0004] At present, there are special-shaped needling equipment with a mechanical arm needling mechanism. Although the needling mechanism can adjust the angle and can needle conical and cylindrical preforms at the same time, large-scale mass production of such special-shaped needling equipment does not have the function of adjusting the angle of the needling head. Cylindrical preforms and conical preforms cannot be needled on the same device at the same time, and the equipment compatibility is low.

[0005] To this end, our company provides a multifunctional rotating preform inner wall acupuncture device to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to overcome the defects in the prior art and provide a multifunctional inner wall acupuncture device for a rotary preform.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A multifunctional rotating preform inner wall needling device comprises: a frame, a hollow clamping turntable is installed at the bottom of the frame, a preform buffer support mold is fixed on the hollow clamping turntable, a needling support beam is installed in the preform buffer support mold, a needling mechanism is moved in the middle of the needling support beam, and two ends of the needling support beam pass through the preform buffer support mold and the hollow clamping turntable and are respectively connected to an X-axis moving component arranged on the frame;

[0009] A rising rack is provided on one side of the acupuncture support beam, and a boss is provided on the other side. A needle moving rack is provided on the back of the boss to provide a moving path for the acupuncture mechanism;

[0010] The acupuncture mechanism includes a moving platform, the moving platform is provided with a limit slide matched with the boss and a transmission groove connected with the limit slide, a climbing motor is fixed on the outer wall of the moving platform, the output end of the climbing motor is installed in the transmission groove and is provided with a transmission gear, the transmission gear is meshed and connected with the needle moving rack of the boss, and is used to drive the moving platform to move up and down on the acupuncture support beam;

[0011] An acupuncture head is also embedded in the moving platform, one side of the acupuncture head is located in the moving platform, and the other side is located outside the moving platform and is equipped with multiple needles. The acupuncture head located in the moving platform is provided with a turbine bar; an adjusting motor is also fixed to the bottom of the moving platform, the output end of the adjusting motor is located in the moving platform and is provided with a worm, and the worm is meshed and connected with the turbine bar to adjust the left and right swing angle of the acupuncture head.

[0012] Preferably, the X-axis moving assembly comprises: two fixed plates arranged at intervals, a moving track is provided on the adjacent sides of the two fixed plates, a support beam fixing seat is set up on the moving track, and a screw translation mechanism is provided on one side of the support beam fixing seat for driving the support beam fixing seat to move left and right; there are two groups of X-axis moving assemblies, which are symmetrically arranged at the top and bottom of the frame.

[0013] Preferably, a limiting groove is also provided in the middle of the support beam fixing seat located at the top of the frame, which is used to limit the rising trajectory of the acupuncture support beam. A rising motor is provided on one side of the limiting groove, and the output shaft of the rising motor is connected to a gear matching the rising rack of the acupuncture support beam.

[0014] Preferably, the hollow clamping turntable includes a turntable and a clamping disk fixed on the turntable, the outer ring of the turntable is continuously distributed with teeth, and a servo motor is provided on one side, and a gear matching the teeth is fixed on the output shaft of the servo motor.

[0015] Preferably, two fixed plates at the bottom of the frame are provided with rotation grooves, and the bottom of the turntable is provided with rotation steps adapted to the rotation grooves.

[0016] Preferably, the chuck is a four-jaw self-centering chuck.

[0017] Preferably, a threaded hole is provided at the bottom of the acupuncture support beam, and a locking bolt matching the threaded hole is provided on a support beam fixing seat located at the bottom of the frame.

[0018] Preferably, the acupuncture machine head is a multi-rod cylinder, and a plurality of the acupuncture needles are provided at the output end of the multi-rod cylinder.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. High density of needle-punched connections on the outer wall of prefabricated body

[0021] The needling machine head of the present invention is arranged inside the rotating body preform, the first layer of unit layers is laid on the preform buffer support mold, and the needling machine head needles from the first layer of unit layers on the outer wall of the preform to the inner wall unit layers in sequence. The connection density of the outer wall unit layers is much higher than the connection density of the inner wall needled at the end. After the composite material is formed, it can meet the harsh flight environment of the aircraft.

[0022] 2. Realize acupuncture of multi-size rotating preforms

[0023] The needling machine head of the present invention is installed on the needling support beam, and the needling support beam can be moved left and right through the support beam fixing seat to realize the horizontal movement of the needling machine head. The needling machine head can be moved up and down through the needling support beam to realize the needling of rotating preforms of multiple sizes with different diameter ranges and height ranges.

[0024] 3. Compatible with needle-punched cylindrical preforms and conical preforms

[0025] The mechanism of the present invention has an angle adjustment device on the needling head. The needling head is parallel to the needling support beam, so the cylindrical rotating body preform can be needled. The needling head has a certain angle with the needling support beam, so the conical rotating body with the same angle can be needled. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the frame structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of a mobile station of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the acupuncture mechanism of the present invention;

[0030] Figure 5 It is a schematic diagram of the cross-sectional structure of the acupuncture mechanism of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the needle-punched support beam of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the needle-punched support beam of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of the hollow clamping turntable of the present invention;

[0034] Fig. 9 It is a schematic diagram of the rotating step structure of the turntable of the present invention;

[0035] Fig.10 This is a schematic diagram of the structure of the preform buffer support mold of the present invention;

[0036] Fig.11 This is a schematic diagram of the fiber preform structure of the present invention;

[0037] Fig.12 It is a schematic diagram of the structure of the support beam fixing seat on the top of the frame of the present invention.

[0038] In the figure: 1. frame; 2. hollow clamping turntable; 21. turntable; 211. rotating step; 22. clamping plate; 23. servo motor; 3. preform buffer support mold; 4. acupuncture support beam; 41. rising rack; 42. boss; 421. needle head moving rack; 43. locking bolt; 5. acupuncture mechanism; 51. moving platform; 52. limiting slide groove; 53. transmission groove; 54. climbing motor; 541. transmission gear; 55. acupuncture head; 551. needle; 552. turbine bar; 56. adjusting motor; 561. worm; 6. X-axis moving assembly; 61. fixing plate; 611. rotating groove; 62. moving track; 63. support beam fixing seat; 631. limiting groove; 632. rising motor; 64. screw translation mechanism. DETAILED DESCRIPTION

[0039] A preferred embodiment of the present invention will be described below in conjunction with the accompanying drawings to clearly and completely describe the technical solution in a preferred embodiment of the present invention.

[0040] A multifunctional rotary preform inner wall needling device comprises: a frame 1, a hollow clamping turntable 2 is installed at the bottom of the frame 1, a preform buffer support mold 3 is fixed on the hollow clamping turntable 2, a needling support beam 4 is installed in the preform buffer support mold 3, a needling mechanism 5 is movable in the middle of the needling support beam 4, and both ends of the needling support beam 4 pass through the preform buffer support mold 3 and the hollow clamping turntable 2 and are respectively connected to an X-axis moving component 6 arranged on the frame 1;

[0041] A rising rack 41 is provided on one side of the acupuncture support beam 4, and a boss 42 is provided on the other side. A needle moving rack 421 is provided on the back of the boss 42 to provide a moving path for the acupuncture mechanism 5;

[0042] The acupuncture mechanism 5 includes a moving platform 51, which is provided with a limiting slide groove 52 matched with the boss 42 and a transmission groove 53 connected with the limiting slide groove 52. A climbing motor 54 is fixed to the outer wall of the moving platform 51. The output end of the climbing motor 54 is installed in the transmission groove 53 and is provided with a transmission gear 541. The transmission gear 541 is meshed and connected with the needle moving rack 421 of the boss 42, so as to drive the moving platform 51 to move up and down on the acupuncture support beam 4.

[0043] A needling machine head 55 is also embedded in the movable platform 51. One side of the needling machine head 55 is located in the movable platform 51, and the other side is located outside the movable platform 51 and is equipped with a plurality of needles 551. The needling machine head 55 located in the movable platform 51 is provided with a turbine bar 552. An adjusting motor 56 is also fixed to the bottom of the movable platform 51. The output end of the adjusting motor 56 is located in the movable platform 51 and is provided with a worm 561. The worm 561 is meshedly connected with the turbine bar 552 for adjusting the left and right swinging angle of the needling machine head 55.

[0044] Through the above design, the present invention sequentially installs the hollow clamping turntable 2 and the preform buffer support mold 3 on the frame 1, installs the acupuncture support beam 4 in the preform buffer support mold 3, and installs the acupuncture mechanism 5 on the acupuncture support beam 4. The acupuncture support beam 4 can be moved left and right by the X-axis moving component 6 on the frame 1 to realize the horizontal movement of the acupuncture mechanism 5. The acupuncture mechanism 5 can also move up and down on the acupuncture support beam 4, and can realize the acupuncture of multi-size rotary preforms with different diameter ranges and different height ranges. The working principle is as follows:

[0045] The climbing motor 54 fixed to the outer wall of the moving platform 51 has a gear transmission mechanism, and the transmission gear 541 is connected to the Figure 6 and Figure 7 As shown, the needle moving rack 421 on the back of the boss 42 of the acupuncture support beam 4 is engaged, so that the moving platform 51 can move up and down on the acupuncture support beam 4;

[0046] An adjusting motor 56 is fixed at the bottom of the movable platform 51, and the output end of the adjusting motor 56 extends into the movable platform 51 and is provided with a worm 561. A turbine bar 552 is provided on the back of the needling head 55. By driving the adjusting motor 56, the angle of the needling head 55 can be adjusted, and the adjustment range is 0° to 15°, which can cover the needling of the cone cabin preform with a cone angle within 15°. The needling head 55 is installed with 5 rows of needles 551 in the longitudinal direction and 25 rows in the transverse direction, and the needling head 55 is provided with an air inlet. The pneumatic drive can achieve effective needling of the inner wall of the fiber preform 100.

[0047] When the needle 551 is needling, the staff will pre-lay a layer of preform unit layer on the preform buffer support mold 3, and the needle 551 will pass through the preform unit layer as a whole to achieve needling connection of each preform unit layer. Since the preform buffer support mold 3 is made of weak rigidity material, when the needle 551 pierces the preform buffer support mold 3, the weak rigidity material prevents the needle 551 from being damaged.

[0048] Finally, the needling machine head 55 is adjusted to be parallel to the needling support beam 4, so that the cylindrical rotating body preform can be needling, and the needling machine head 55 is adjusted to have a certain angle with the needling support beam 4, so that the conical rotating body with the same angle can be needling.

[0049] Specifically, the X-axis moving assembly 6 includes: two fixed plates 61 arranged at intervals, a moving track 62 is opened on the adjacent side of the two fixed plates 61, the moving track 62 is equipped with a support beam fixing seat 63, and a screw translation mechanism 64 is provided on one side of the support beam fixing seat 63 for driving the support beam fixing seat 63 to move left and right; there are two groups of X-axis moving assemblies 6, which are symmetrically arranged at the top and bottom of the frame 1.

[0050] Through the above design, the screw translation mechanism 64 of the present invention enables the support beam fixing seat 63 to move left and right along the moving track 62, driving the needling support beam 4 to move left and right to complete the needling of the inner wall of the rotating body preform.

[0051] Specifically, a limiting groove 631 is also provided in the middle of the support beam fixing seat 63 located at the top of the frame 1, which is used to limit the rising trajectory of the acupuncture support beam 4. A rising motor 632 is provided on one side of the limiting groove 631, and the output shaft of the rising motor 632 is connected to a gear matching the rising rack 41 of the acupuncture support beam 4.

[0052] Through the above-mentioned design, the present invention drives the rising motor 632, and provides track limitation for the needle-punched support beam 4 when it rises through the limit groove 631, so as to realize the vertical movement of the needle-punched support beam 4. When the needle-punched support beam 4 is installed in the preform buffer support mold 3, the rising motor 632 lifts the needle-punched support beam 4 to a certain height, leaving enough space to install the preform support mold 3; and each time a preform unit layer is needled, the needle-punched support beam 4 also needs to be lifted to a certain height to leave enough space to lay the next preform unit layer.

[0053] Specifically, the hollow clamping turntable 2 includes a turntable 21 and a clamping disk 22 fixed on the turntable 21. The outer ring of the turntable 21 is continuously distributed with teeth, and a servo motor 23 is provided on one side. The output shaft of the servo motor 23 is fixed with a gear matching the teeth.

[0054] like Figure 8As shown, in the present invention, the teeth of the turntable 21 are evenly distributed throughout the entire circle, and the servo motor 23 is used to achieve uniform rotation. The clamping claws on the clamping plate 22 are arranged at 4 locations, so that the preform buffer support molds of different shapes can be clamped and fixed.

[0055] Specifically, two fixing plates 61 at the bottom of the frame 1 are provided with rotation grooves 611 , and a rotation step 211 adapted to the rotation grooves 611 is provided at the bottom of the turntable 21 .

[0056] like Figure 2 and Fig. 9 As shown, in the present invention, the rotating step 211 of the hollow clamping turntable 2 rotates around the axis of the rotating groove 611 at the bottom of the frame 1 to ensure that every angle of the inner wall of the preform can be needled.

[0057] Specifically, the chuck 22 is a four-jaw self-centering chuck.

[0058] Specifically, a threaded hole is provided at the bottom of the acupuncture support beam 4, and a locking bolt 43 matching the threaded hole is provided on the support beam fixing seat 63 located at the bottom of the frame 1.

[0059] like Figure 6 and Figure 7 As shown, the acupuncture support beam 4 is fixed by means of threaded holes and locking bolts 43 of the support beam fixing seat 63 at the bottom of the frame 1, so that after the acupuncture support beam 4 is lowered to the support beam fixing seat 63, it is fixed and locked by means of a threaded structure.

[0060] Specifically, the acupuncture head 55 is a multi-rod cylinder, and a plurality of the acupuncture needles 551 are provided at the output end of the multi-rod cylinder.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional inner wall acupuncture device for a rotating preform, characterized in that: include: A frame (1), a hollow clamping turntable (2) is installed at the bottom of the frame (1), a preform buffer support mold (3) is fixed on the hollow clamping turntable (2), a needle-piercing support beam (4) is installed inside the preform buffer support mold (3), a needle-piercing mechanism (5) is movable in the middle of the needle-piercing support beam (4), and two ends of the needle-piercing support beam (4) pass through the preform buffer support mold (3) and the hollow clamping turntable (2) and are respectively connected to an X-axis moving component (6) arranged on the frame (1); A rising rack (41) is provided on one side of the acupuncture support beam (4), and a boss (42) is provided on the other side. A needle moving rack (421) is provided on the back of the boss (42) to provide a moving path for the acupuncture mechanism (5); The acupuncture mechanism (5) comprises a moving platform (51), the moving platform (51) is provided with a limiting slide groove (52) matched with the boss (42) and a transmission groove (53) connected with the limiting slide groove (52), a climbing motor (54) is fixed on the outer wall of the moving platform (51), the output end of the climbing motor (54) is installed in the transmission groove (53) and is provided with a transmission gear (541), the transmission gear (541) is meshedly connected with the needle moving rack (421) of the boss (42), and is used to drive the moving platform (51) to move up and down on the acupuncture support beam (4); The movable platform (51) is also embedded with a needle punching machine head (55), one side of the needle punching machine head (55) is located inside the movable platform (51), and the other side is located outside the movable platform (51) and is equipped with a plurality of needles (551), and the needle punching machine head (55) located inside the movable platform (51) is provided with a turbine bar (552); an adjusting motor (56) is also fixed to the bottom of the movable platform (51), the output end of the adjusting motor (56) is located inside the movable platform (51) and is provided with a worm gear (561), and the worm gear (561) is meshedly connected with the turbine bar (552) for adjusting the left and right swing angle of the needle punching machine head (55).

2. The multifunctional rotating preform inner wall acupuncture device according to claim 1, characterized in that: The X-axis moving assembly (6) comprises: two fixed plates (61) arranged at intervals, a moving track (62) being provided on one adjacent side of the two fixed plates (61), a support beam fixing seat (63) being provided on the moving track (62), and a screw rod translation mechanism (64) being provided on one side of the support beam fixing seat (63) for driving the support beam fixing seat (63) to move left and right; the X-axis moving assembly (6) comprises two groups, which are symmetrically arranged at the top and bottom of the frame (1).

3. The multifunctional rotating preform inner wall acupuncture device according to claim 2, characterized in that: A limiting groove (631) is also provided in the middle of the support beam fixing seat (63) located at the top of the frame (1) for limiting the ascending trajectory of the acupuncture support beam (4); a rising motor (632) is provided on one side of the limiting groove (631); and an output shaft of the rising motor (632) is connected to a gear matching the ascending rack (41) of the acupuncture support beam (4).

4. The multifunctional rotating preform inner wall acupuncture device according to claim 1, characterized in that: The hollow clamping turntable (2) comprises a turntable (21) and a clamping plate (22) fixed on the turntable (21); teeth are continuously distributed on the outer ring of the turntable (21); a servo motor (23) is provided on one side; a gear matching the teeth is fixed on the output shaft of the servo motor (23).

5. The multifunctional inner wall acupuncture device of a rotary preform according to any one of claims 2 and 4, characterized in that: Two fixed plates (61) located at the bottom of the frame (1) are provided with rotation grooves (611), and the bottom of the rotating disk (21) is provided with rotation steps (211) adapted to the rotation grooves (611).

6. The multifunctional rotating preform inner wall acupuncture device according to claim 4, characterized in that: The chuck (22) is a four-jaw self-centering chuck.

7. The multifunctional rotating preform inner wall acupuncture device according to claim 2, characterized in that: A threaded hole is provided at the bottom of the acupuncture support beam (4), and a locking bolt (43) matching the threaded hole is provided on a support beam fixing seat (63) located at the bottom of the frame (1).

8. The multifunctional rotating preform inner wall acupuncture device according to claim 3, characterized in that: The acupuncture machine head (55) is a multi-rod cylinder, and a plurality of the acupuncture needles (551) are provided at the output end of the multi-rod cylinder.

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