Trapezoidal preform needling mechanism and needling equipment

Abstract

The utility model provides a trapezoidal preform needling mechanism and needling equipment, and belongs to the technical field of carbon fiber product production equipment.The trapezoidal preform needling mechanism comprises an upper needling mechanism and a side needling mechanism which are located on a main rack of the needling equipment, the upper needling mechanism is used for needling the upper surface of a trapezoidal preform, and the side needling mechanism is used for needling the lower surface of the trapezoidal preform. The side needling mechanism is used for needling the side face of the trapezoidal prefabricated body, the side needling mechanism comprises a side needling assembly for needling the side face of the trapezoidal prefabricated body and an angle adjusting assembly for adjusting the needling angle of the side needling assembly, and the side needling assembly comprises a side needle plate; and the angle adjusting assembly can adjust the angle of the side needle plate so as to adapt to trapezoidal preforms with side surfaces with different inclination angles. Through cooperation of the upper needling mechanism and the side needling mechanism, efficient needling operation is conducted on the upper surface and the side face of the trapezoidal prefabricated body, and a formed product meeting the needling quality requirement can be obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon fiber product production equipment, in particular to a trapezoidal preform needling mechanism and needling equipment. Background Art

[0002] Carbon / carbon (C / C) composites are carbon-matrix composites reinforced with carbon fibers and their fabrics. They possess excellent properties such as high strength, high modulus, high fracture toughness, high thermal conductivity, excellent thermal insulation, and low density. They are widely used in fields such as machinery, electronics, chemicals, metallurgy, and nuclear energy, and are extensively used in key components in aerospace, aviation, and defense. Preform molding is a prerequisite for the preparation of C / C composites.

[0003] Needle punching is a commonly used process in preform molding. Needle punching can introduce in-plane fibers from fiber composite layups, such as weft-free fabric and mesh, through the thickness of the material, creating a unique three-dimensional mesh preform. Needle punched preforms overcome the weak interlayer performance of two-dimensional fiber structures and exhibit higher damage tolerance. Furthermore, needle punching can produce preforms of various large sizes and complex shapes, and currently occupies a key position in the carbon fiber preform molding process.

[0004] In the prior art, the shapes of preforms are mainly concentrated in circular, crucible-shaped, barrel-shaped, ring-shaped, conical structures and the like. However, for preforms whose overall shape is a trapezoid, there is no corresponding needling equipment in the prior art, and they are often completed by manual needling, which is inefficient and difficult to ensure the quality of needling. Utility Model Content

[0005] In view of the above problems, the present invention provides a trapezoidal preform needling mechanism and needling equipment, which can perform needling operations on preforms with a trapezoidal shape that meet high standards, thereby obtaining a trapezoidal preform product with reliable quality.

[0006] The utility model provides a trapezoidal preform needling mechanism, comprising an upper needling mechanism and a side needling mechanism located on a main frame of the needling device, wherein the upper needling mechanism is used for needling the upper surface of the trapezoidal preform, and the side needling mechanism is used for needling the side of the trapezoidal preform, and the side needling mechanism comprises a side needling assembly for needling the side of the trapezoidal preform and an angle adjustment assembly for adjusting the needling angle of the side needling assembly, wherein the side needling assembly comprises a side needle plate, and the angle adjustment assembly can adjust the angle of the side needle plate to adapt to trapezoidal preforms with sides having different inclination angles.

[0007] As a further improvement of the present invention, the main frame includes a crossbeam and a vertical support, the side needling assembly is located on the vertical support, and the side needling assembly includes a first side cylinder and a second side cylinder which are horizontally arranged and spaced apart up and down, the first side cylinder is located above the second side cylinder, the first side cylinder is connected to a first side push rod, and the end of the first side push rod away from the first side cylinder is connected to the side needle plate through an angle adjustment assembly; the second side cylinder is connected to a second side push rod, and the end of the second side push rod away from the second side cylinder is hinged to the side needle plate.

[0008] As a further improvement of the present invention, the side acupuncture mechanism also includes a position adjustment component for adjusting the position of the side acupuncture component, and the position adjustment component includes a side adjustment cylinder, a side slide, and a side connecting plate; the first side cylinder and the second side cylinder are both fixed on the side slide, and the side adjustment cylinder is fixed on the vertical support. The output end of the side adjustment cylinder is connected to the side slide through the side connecting plate, and the side adjustment cylinder drives the side slide to move along the horizontal lateral slide rail located on the vertical support.

[0009] As a further improvement of the present invention, the angle adjustment assembly includes an adjusting screw and an adjusting sleeve, one end of the adjusting sleeve is rotatably connected to the first lateral push rod, and the other end is threadedly connected to the adjusting screw, and the end of the adjusting screw away from the adjusting sleeve is movably connected to the side needle plate, and the adjusting sleeve is used to adjust the extension and contraction amount of the adjusting screw to adjust the angle of the side needle plate.

[0010] As a further improvement of the present invention, the adjusting screw is fixedly provided with a relative ear plate at one end away from the adjusting sleeve, and a vertical plate is fixed to the back of the side needle plate, and the vertical plate is provided with a T-slot, and a T-block extending outward is slidably connected to the T-slot, and the T-block is inserted between the relative ear plates and hinged to the ear plates; the end of the vertical plate is fixedly connected to a horizontal plate, and the horizontal plate is parallel to the T-block; the horizontal plate is provided with a first threaded hole passing through the horizontal plate, and the T-block is provided with a second threaded hole coaxial with the first threaded hole of the horizontal plate, and the sliding of the T-block in the T-slot is limited by an adjusting bolt passing through the first threaded hole and inserted into the second threaded hole.

[0011] As a further improvement of the present invention, the upper needling mechanism includes at least one upper cylinder, an upper push rod and an upper needle plate, one end of the upper push rod in the length direction is fixedly connected to the upper needle plate, and the other end is connected to the upper cylinder, and the upper cylinder drives the upper push rod to push the upper needle plate downward toward the needling mold or upward away from the needling mold to complete the needling of the upper surface of the trapezoidal preform.

[0012] The utility model provides a needling device comprising a base and a main frame fixed on the base, wherein the main frame is provided with an upper needling mechanism for needling the upper surface of a trapezoidal preform as described in any one of claims 1 and a side needling mechanism for needling the side of the trapezoidal preform.

[0013] As a further improvement of the present invention, the acupuncture equipment also includes a mobile platform that supports and drives the movement of the acupuncture mold, and the mobile platform includes a platform body; a guide groove is provided on the bottom surface of the platform body, and the guide groove cooperates with a movable guide rail provided on the base, and the platform body is driven to move along the movable guide rail by a movable component.

[0014] As a further improvement of the present invention, the mobile platform also includes a lifting cylinder fixedly connected to the platform body and a tray located on top of the output end of the lifting cylinder. The acupuncture mold is fixed on the tray and is lifted and lowered by the lifting cylinder.

[0015] As a further improvement of the present invention, the mobile platform also includes a driving wheel driven by a motor, a driven wheel connected to the lifting cylinder bearing, and a transmission member connecting the driving wheel and the driven wheel. A plurality of linkage components that can be lifted and lowered synchronously with the lifting cylinder are arranged between the driven wheel and the pallet. One end of the linkage component is fixed to the driven wheel and the other end is fixed to the pallet. The driven wheel drives the pallet to rotate synchronously through the linkage component.

[0016] The utility model provides a trapezoidal preform needling mechanism and needling equipment. The needling mechanism and the side needling mechanism located on the main frame of the needling equipment respectively needle the upper surface and the side surface of the trapezoidal preform. The side needling mechanism can also adjust the needling angle to adapt to the needling operation of trapezoidal preforms of different specifications, thereby improving the needling efficiency of the trapezoidal preform, saving manpower, and ensuring the needling quality, thereby obtaining a trapezoidal preform product that meets the requirements:

[0017] 1. The upper needling mechanism located above the frame effectively needs to be needled on the upper surface of the trapezoidal preform to be formed, and the side needling mechanism located on the side of the frame effectively needs to be needled on the side of the trapezoidal preform to be formed, so that the trapezoidal preform to be formed is fully needled, ensuring that a high-quality finished trapezoidal preform is obtained;

[0018] 2. The side needling mechanism includes a side needling assembly and an angle adjustment assembly for adjusting the side needling assembly. Since the side inclination angles of trapezoidal preforms of different specifications are different, the side needling assembly is set to be adjustable, thereby improving the universality of the needling device, and can be used to needle trapezoidal preforms of various specifications;

[0019] 3. The position adjustment component can be used to adjust the position between the side needling component and the needling die, further improving the applicability of the side needling mechanism and meeting different needling requirements;

[0020] 4. The needling die is driven to move by the mobile platform to needle different positions of the trapezoidal preform to be formed and each surface of the trapezoidal preform is needled by rotation;

[0021] 5. Adjust the position of the acupuncture mold in the vertical space through the lifting structure to ensure that the acupuncture mold is within the effective acupuncture range of the acupuncture mechanism to meet the acupuncture requirements of different degrees;

[0022] 6. The trapezoidal preform needling mechanism and needling equipment of the present invention greatly improve the practicality and utilization rate of the equipment by setting up a multi-system multi-dimensional needle plate and a movable, lifting and rotating platform, reducing the capital investment in basic equipment and lowering labor costs;

[0023] 7. The equipment provided by the present invention has a high degree of automation, which can not only improve production efficiency and reduce labor costs through assembly line operations, but also control and design the processing volume, thereby ensuring product production quality and avoiding the problem of substandard quality caused by non-standard manual acupuncture operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the position of the trapezoidal preform needling mechanism in the needling device according to an embodiment of the present utility model.

[0025] Figure 2 It is a side view of the acupuncture device according to an embodiment of the present invention.

[0026] Figure 3 It is a structural schematic diagram of the side needling mechanism of the trapezoidal preform needling mechanism of an embodiment of the present utility model.

[0027] Figure 4 It is a structural schematic diagram of another aspect of the side needling mechanism of the trapezoidal preform needling mechanism according to an embodiment of the present invention.

[0028] Figure 5 yes Figure 4 A partial enlarged view of part A.

[0029] Figure 6 It is a structural schematic diagram of the upper acupuncture mechanism of the trapezoidal acupuncture mechanism in an embodiment of the present utility model.

[0030] Figure 7 It is a structural diagram of a mobile platform according to an embodiment of the present utility model.

[0031] Explanation of reference numerals: 1. base; 11. movable guide rail; 12. pushing groove; 2. main frame; 21. first door frame; 211. lateral avoidance opening; 22. second door frame; 23. crossbeam; 24. vertical support; 25. lateral slide rail; 3. upper needling mechanism; 31. first upper cylinder; 32. second upper cylinder; 33. first upper push rod; 34. second upper push rod; 35. upper needle plate; 4. side needling mechanism; 41. side needling assembly; 411. first lateral cylinder; 412. second lateral cylinder; 413. first lateral push rod; 414. second lateral push rod; 415. side needle plate; 42. angle adjustment assembly; 421. adjusting screw; 422 , adjusting sleeve; 423, ear plate; 424, T-block; 425, vertical plate; 426, T-slot; 427, horizontal plate; 428, adjusting bolt; 43, position adjustment assembly; 431, lateral adjustment cylinder; 432, side slide; 433, lateral slide; 434, side connecting plate; 45, guide member; 5, moving platform; 51, platform body; 511, guide groove; 52, lifting cylinder; 53, pallet; 54, driving wheel; 55, driven wheel; 56, transmission part; 57, linkage assembly; 571, first linkage pipe; 572, second linkage pipe; 58, moving assembly; 581, driving hydraulic cylinder; 582, slider; 6, acupuncture mold. DETAILED DESCRIPTION

[0032] The following is a combination of specific embodiments and appendix Figure 1-7 The utility model is described in detail so that those skilled in the art can more fully understand the purpose, features and effects of the utility model.

[0033] Unless otherwise specified, all technical and scientific terms used in this utility model have the same meanings as commonly understood by those skilled in the art to which this utility model belongs. In the event that the definition of a term in this utility model conflicts with the meaning commonly understood by those skilled in the art to which this utility model belongs, the definition in this utility model shall prevail.

[0034] The utility model provides a trapezoidal preform needling mechanism and a needling device, which can effectively needle a carbon fiber trapezoidal preform, thereby improving the needling efficiency of the trapezoidal preform.

[0035] The utility model provides a trapezoidal preform needling mechanism, referring to Figure 1 、 Figure 2, including an upper needling mechanism 3 for needling the upper surface of the trapezoidal preform and a side needling mechanism 4 for needling each surface of the trapezoidal preform. The upper surface of the trapezoidal preform is horizontal and has at least one inclined side surface. The trapezoidal preform is formed on a needling mold 6, with an open lower end, and only the upper surface and the side surface, which will be inverted during later use. In this embodiment, the outer shape of the trapezoidal preform is an isosceles trapezoid in the front, back, left and right views, and is in the shape of a regular quadrangular pyramid as a whole. The upper needling mechanism 3 and the side needling mechanism 4 are located on the needling device. The needling device includes a base 1, a main frame 2 fixed to the base 1, a trapezoidal needling mold 6, and a movable platform 5 for placing the needling mold 6, and the movable platform 5 can move along a movable guide rail 11 located on the base 1. The needling mold 6 is in the shape of a regular quadrangular pyramid corresponding to the trapezoidal preform. The main frame 2 includes a crossbeam 23 and a vertical support 24. The bottom end of the vertical support 24 is fixedly connected to the base 1. The upper needling mechanism 3 is located on the crossbeam 23 and is used to needle the upper surface of the trapezoidal preform. The side needling mechanism 4 is located on the vertical support 24 and is used to needle the side surfaces of the trapezoidal preform. The trapezoidal preform is formed by the needling operation of the upper needling mechanism 3 and the side needling mechanism 4.

[0036] The main frame 2 includes a first portal frame 21 and a second portal frame 22. The first portal frame 21 and the second portal frame 22 each include a crossbeam 23 and a vertical support 24. The crossbeam 23 and the vertical support 24 are both plate-shaped.

[0037] The side needling mechanisms 4 are symmetrically arranged on two opposite vertical supports 24 of the main frame 2. Figure 3 、 Figure 4 In this embodiment, the side acupuncture mechanism 4 is located on the left side of the main frame 2 as an example for description.

[0038] The side needling mechanism 4 is disposed on the vertical support 24 of the first portal frame 21. The side needling mechanism 4 includes a side needling assembly 41 capable of needling the side surfaces of the trapezoidal preform, an angle adjustment assembly 42 for adjusting the needling angle of the side needling assembly 41, and a position adjustment assembly 43 for adjusting the position of the side needling assembly 41.

[0039] The side needling assembly 41 includes a first side cylinder 411 and a second side cylinder 412, which are arranged horizontally and spaced vertically apart, wherein the first side cylinder 411 is located above the second side cylinder 412. The first side cylinder 411 and the second side cylinder 412 are located on the side of the first portal frame 21 facing away from the second portal frame 22. The first side cylinder 411 is connected to a first side push rod 413, the end of which, away from the first side cylinder 411, is connected to a side needle plate 415 via an angle adjustment assembly 42. The second side cylinder 412 is connected to a second side push rod 414, the end of which, away from the second side cylinder 412, is hinged to the side needle plate 415. The angle adjustment assembly 42 can be used to adjust the spatial position of the side needle plate 415 to accommodate needling operations on trapezoidal preforms having sides with different inclination angles.

[0040] In order to adapt to the needling of preforms of different specifications or sizes, it is necessary to adjust the position of the side needle plate 415. In this embodiment, the first lateral cylinder 411 and the second lateral cylinder 412 are not directly fixed on the vertical support 24 of the first portal frame 21, but the first lateral cylinder 411 and the second lateral cylinder 412 are arranged so that the position can be adjusted horizontally using the position adjustment component 43. Specifically, the position adjustment component 43 includes a lateral adjustment cylinder 431, a side slide plate 432, and a side connecting plate 434. The first lateral cylinder 411 and the second lateral cylinder 412 are both fixed on the side slide plate 432. The side slide plate 432 is located between the first lateral cylinder 411 and the vertical support 24 of the first portal frame 21 and is in close contact with the vertical support 24. A horizontal, outwardly protruding side rail 25 is fixed to the side of the vertical support 24 of the first portal frame 21 facing the side slide 432. A side slot 433 is defined on the side of the side slide 432 facing the vertical support 24 of the first portal frame 21, which engages with the side rail 25. The side slide 432 can move along the side rail 25, thereby driving the horizontal movement of the first and second side cylinders 411, 412. Furthermore, the side rail 25 also provides fixed support for the side slide 432.

[0041] The vertical support 24 of the first portal frame 21 is fixedly connected to a horizontally mounted lateral adjustment cylinder 431 on the side facing away from the side slide 432. The piston rod of the lateral adjustment cylinder 431 extends away from the side needle plate 415. The piston rod of the lateral adjustment cylinder 431 and the side slide 432 are connected by a side connecting plate 434. When the piston rod of the lateral adjustment cylinder 431 extends outward, it drives the side slide 432 away from the trapezoidal needling die 6. When the piston rod of the lateral adjustment cylinder 431 retracts inward, it drives the side slide 432 toward the needling die 6, thereby changing the positions of the first and second lateral cylinders 411, 412 during the lateral needling operation.

[0042] Preferably, the vertical support 24 of the first portal frame 21 is provided with a lateral avoidance opening 211 that allows the side connecting plate 434 to move. When the side connecting plate 434 moves under the drive of the lateral adjustment cylinder 431, it moves along the lateral avoidance opening 211. The vertical support 24 of the first portal frame 21 plays a certain supporting role on the side connecting plate 434, thereby enhancing the stability of the entire side acupuncture mechanism 4.

[0043] Preferably, a guide member 45 fixed to the side slide plate 432 is provided between the first lateral cylinder 411 and the side needle plate 415, and between the second lateral cylinder 412 and the side needle plate 415. The first lateral push rod 413 and the second lateral push rod 414 pass through guide holes defined in the guide member 45. The guide member 45 not only guides the first lateral push rod 413 and the second lateral push rod 414, but also supports the first lateral push rod 413 and the second lateral push rod 414, thereby ensuring that the side needle plate 415 connected to the first lateral push rod 413 and the second lateral push rod 414 is in a stable state and preventing the first lateral push rod 413 and the second lateral push rod 414 from bending.

[0044] Reference Figure 4 、 Figure 5 The angle adjustment assembly 42 includes an adjusting screw 421 (threads not shown in the figure) and an adjusting sleeve 422. One end of the adjusting sleeve 422 is rotatably connected to the first lateral push rod 413, and the other end is threadedly connected to the adjusting screw 421. By rotating the adjusting sleeve 422, the distance between the first lateral push rod 413 and the adjusting screw 421 can be adjusted, that is, the extension and contraction amount of the adjusting screw 421 in the adjusting sleeve 422 can be adjusted, so that the angle of the side needle plate 415 changes. The outer diameter of the adjusting screw 421 is smaller than the inner diameter of the first lateral push rod 413, so that by rotating the adjusting sleeve 422, the adjusting screw 421 can pass through the adjusting sleeve 422 and enter the first lateral push rod 413, so that the extension and contraction amount of the adjusting screw 421 in the first lateral push rod 413 changes.

[0045] An opposing lug 423 is fixedly mounted on the end of the adjustment screw 421 away from the adjustment sleeve 422. A vertical plate 425 is fixed to the back of the side needle plate 415. The vertical plate 425 is provided with a T-slot 426, which is open at the lower end. An outwardly extending T-block 424 is slidably connected within the T-slot 426. The T-block 424 is inserted between the opposing lugs 423 and hingedly connected to the lugs 423. In this embodiment, because the second lateral push rod 414 is rotatably connected to the side needle plate 415, the adjustment sleeve 422 is rotated, causing the adjustment screw 421 to drive the T-block 424, which is hingedly connected to the lug 423, to slide along the T-slot 426, thereby changing the angle of the side needle plate 415.

[0046] In order to keep the side needle plate 415 in a stable state after the angle is adjusted, the angle adjustment assembly 42 further includes a horizontal plate 427 fixed to the top of the vertical plate 425. The horizontal plate 427 is provided with a first threaded hole extending therethrough, and the top surface of the T-block 424 is provided with a second threaded hole coaxial with the first threaded hole of the horizontal plate 427. An adjustment bolt 428 passes through the first threaded hole and is inserted into the second threaded hole to threadably connect the horizontal plate 427 and the T-block 424, thereby limiting the position of the T-block 424 and preventing it from sliding along the T-slot 426. If the angle of the side needle plate 415 needs to be adjusted again, the adjustment bolt 428 is unscrewed from the second threaded hole. After the angle is adjusted to the correct position, the adjustment bolt 428 is screwed in again.

[0047] Specifically, after determining the acupuncture angle to be achieved by the side needle plate 415 according to the side inclination angle of the acupuncture mold 6, first unscrew the adjusting bolt 428 out of the T-block 424 to make the T-block 424 in a freely movable state, then rotate the adjusting sleeve 422 to adjust the telescopic amount of the adjusting screw 421, and the T-block 424 slides along the T-slot 426 to drive the side needle plate 415 to rotate, and the angle of the side needle plate 415 changes; when the angle of the side needle plate 415 is adjusted to the right position, screw the adjusting bolt 428 into the T-block 424, lock the T-block 424, and put the side needle plate 415 in a stable and reliable state ready for acupuncture.

[0048] Reference Figure 1 、 Figure 6 The upper needling mechanism 3 includes at least one upper cylinder, an upper push rod and an upper needle plate 35. One end of the upper push rod in the length direction is fixedly connected to the upper needle plate, and the other end is connected to the upper cylinder. The upper cylinder drives the upper push rod to push the upper needle plate 35 downward toward the needling mold 6 or upward away from the needling mold 6 to complete the needling of the upper surface of the trapezoidal preform.

[0049] Specifically, in this embodiment, the upper needling mechanism includes a first upper cylinder 31 and a second upper cylinder 32 arranged vertically. The first upper cylinder 31 and the second upper cylinder are both fixed on the side of the beam 23 of the second portal frame 22 facing away from the first portal frame 21, and the first upper cylinder 31 and the second upper cylinder 32 are symmetrically arranged along the length direction of the beam 23, thereby ensuring that the upper needle plate 35 is evenly stressed, so as to improve the needling quality of the upper surface of the preform.

[0050] The first upper cylinder 31, through the first upper push rod 33, and the second upper cylinder 32, through the second upper push rod 34, simultaneously push the upper needle plate 35 to perform the needling operation. It should be noted that the strokes of the first upper cylinder 31 and the second upper cylinder 32 are exactly the same, so that the upper needle plate 35 is always in a horizontal state, effectively needling the upper surface of the trapezoidal preform and avoiding the situation where some areas are not needling properly.

[0051] The trapezoidal preform needling mechanism of this embodiment realizes the needling operation of the trapezoidal preform through the cooperation of the upper needling mechanism 3 and the side needling mechanism 4, and the angle of the side needle plate can be adjusted to adapt to the trapezoidal preform with side surfaces of different inclination angles, which can form effective needling on the trapezoidal preform.

[0052] The present invention further provides a needling apparatus comprising the upper needling mechanism 3 and the side needling mechanism 4, wherein the upper needling mechanism 3 and the side needling mechanism 4 are staggered along the direction of the movable guide rail 11 of the base 1 so as not to interfere with each other's operations. During needling, a user may first enter the needling operation area of ​​the upper needling mechanism 3 or the needling operation area of ​​the side needling mechanism 4. Since the trapezoidal preform has a certain volume, the two needling mechanisms can operate simultaneously, thereby improving needling efficiency.

[0053] Reference Figure 1 、 Figure 7 The movable platform 5 includes a platform body 51. The bottom surface of the platform body 51 is provided with a guide groove 511 which is parallel to and matches the movable guide rail 11 of the base 1. There are two movable guide rails 11 and two guide grooves 511.

[0054] The platform body 51 is moved along the movable guide rail 11 by the moving assembly 58. Specifically, the top surface of the base 1 is provided with a push groove 12 located between the movable guide rails 11 and parallel to the movable guide rails 11. One end of the push groove 12 is provided with a driving hydraulic cylinder 581 fixed on the base 1. Preferably, the driving hydraulic cylinder 581 is a multi-stage multi-stroke hydraulic cylinder. A slider 582 extending downward into the pushing groove 12 is fixed on the bottom surface of the platform body 51 at a position opposite to the pushing groove 12. The slider 582 is fixedly connected to the output end of the driving hydraulic cylinder 581. The driving hydraulic cylinder 581 is started to drive the slider 582 to slide, thereby driving the movement of the position of the platform body 51, thereby adjusting the position of the trapezoidal needling mold 6 located on the mobile platform 5 and changing the needling position of the trapezoidal preform.

[0055] Furthermore, to facilitate the lifting and rotation of the needling die 6, a lifting cylinder 52 is fixed to the top surface of the platform body 51. A tray 53 is provided on top of the output end of the lifting cylinder 52. The tray 53 contacts the output end surface of the lifting cylinder 52. The tray 53 is stabilized by a linkage assembly 57 that rises and falls synchronously with the lifting cylinder 52. The tray 53 is connected to the needling die 6 with bolts, providing reliable support for the needling die 6. When the position of the needling die 6 needs to be adjusted vertically, this can be accomplished by operating the lifting cylinder 52.

[0056] The mobile platform 5 also includes a driving wheel 54 located on the platform body 51 and driven by a motor (not shown) located inside the platform body 51, a driven wheel 55 connected to the cylinder bearing of the lifting cylinder 52, and a transmission member 56 between the driving wheel 54 and the driven wheel 55. The linkage assembly 57 is arranged between the driven wheel 55 and the tray 53. The linkage assembly 57 includes a first linkage tube 571 fixed to the driven wheel 55 and a second linkage tube 572 slidably connected to the first linkage tube 571; multiple first linkage tubes 571 are arranged along the circumference of the driven wheel 55. The bottom end of the second linkage tube 572 is inserted into the first linkage tube 571, and the top end is fixedly connected to the tray 53.

[0057] When the motor drives the driving wheel 54 to rotate and drives the driven wheel 55 to rotate, the linkage assembly 57 drives the tray 53 to rotate synchronously, and the needling mold 6 located on the tray 53 rotates accordingly. Since the output end of the lifting cylinder 52 is only in surface contact with the tray 53, the rotation of the tray 53 does not drive the lifting cylinder 52 to rotate.

[0058] In this embodiment, the linkage assembly 57 is configured as a retractable structure consisting of a first linkage tube 571 and a second linkage tube 572, which is adapted to the lifting cylinder 52. This ensures that the rotation of the tray 53 is driven by the rotation of the lifting cylinder 52 without affecting the lifting of the lifting cylinder 52. Because the linkage assembly 57 is retractable and connected to the driven wheel 55 below and the tray 53 above, respectively, the needling mold 6 remains stable during the process of being raised and lowered by the lifting cylinder 52, preventing the needling mold 6 from shaking or tilting.

[0059] The transmission member 56 can be a transmission belt or a transmission chain. Preferably, the transmission member 56 is a transmission chain, and the driving wheel 54 and the driven wheel 55 are driven by the chain. The chain transmission has no elastic slip and skidding, and has an accurate average transmission ratio, reliable operation, and high efficiency, thereby ensuring stable rotation of the acupuncture mold 6.

[0060] When the needling side of the trapezoidal preform needs to be adjusted, the motor is used to drive the driving wheel 54 to rotate, which in turn drives the driven wheel 55 to rotate through the transmission member 56, and the needling mold 6 located above the driven wheel 55 rotates synchronously.

[0061] In another feasible embodiment, if the needling die 6 does not need to be rotated during use and only needs to be raised and lowered, the driving wheel 54, driven wheel 55, transmission member 56, linkage assembly 57, and drive motor are not required. In this embodiment, the top of the output end of the lifting cylinder 52 is fixedly connected to the tray 53. The lifting cylinder 52 itself provides stable support for the needling die 6 and can drive the needling die 6 to rise and fall.

[0062] The specific method of using the acupuncture device of this embodiment is described below:

[0063] 1. First, use the moving assembly 58 to move the mobile platform 5 carrying the needling mold 6 to the initial needling position. Use the lifting cylinder 52 to adjust the height of the needling mold 6 to determine the needling depth of the upper needling mechanism. Then use the position adjustment assembly 43 and the angle adjustment assembly 42 to adjust the needling angle and needling position of the side needle plate 415.

[0064] 2. Move the needle punching mold 6 out of the needle punching area, and spread the material to be needle punched on the surface of the needle punching mold 6 and wait for needle punching;

[0065] 3. Move the needle punching mold covered with the material into the needle punching area adjusted in step 1, start the upper needle punching mechanism 3 and the side needle punching mechanism 4 to perform needle punching to obtain a trapezoidal preform;

[0066] 4. During the needling process, the needling die 6 is moved back and forth and rotated to achieve comprehensive needling of all sides of the trapezoidal preform, ultimately obtaining a high-quality molded trapezoidal preform.

[0067] The trapezoidal preform needling mechanism and needling equipment provided by the utility model can effectively needle all surfaces of the trapezoidal preform, have high operating efficiency, and the quality of the obtained formed trapezoidal preform is controllable.

[0068] The above description is merely a preferred embodiment of the present invention and does not constitute any other limitation to the present invention. Any modification or equivalent variation based on the technical essence of the present invention shall still fall within the scope of protection claimed by the present invention.

Claims

1. A trapezoidal preform needling mechanism, characterized in that: The invention comprises an upper needling mechanism (3) and a side needling mechanism (4) located on a main frame (2) of the needling device, wherein the upper needling mechanism (3) is used for needling the upper surface of a trapezoidal preform, and the side needling mechanism is used for needling the side surface of the trapezoidal preform, and the side needling mechanism (4) comprises a side needling assembly (41) for needling the side surface of the trapezoidal preform, and an angle adjustment assembly (42) for adjusting the needling angle of the side needling assembly (41), wherein the side needling assembly (41) comprises a side needling plate (415), and the angle adjustment assembly (42) can adjust the angle of the side needling plate (415) to adapt to trapezoidal preforms with side surfaces having different inclination angles.

2. The trapezoidal preform needling mechanism according to claim 1, characterized in that: The main frame (2) includes a crossbeam (23) and a vertical support (24). The side needling assembly (41) is located on the vertical support (24). The side needling assembly (41) includes a first side cylinder (411) and a second side cylinder (412) that are horizontally arranged and spaced apart from each other. The first side cylinder (411) is located above the second side cylinder (412). The first side cylinder (411) is connected to a first side push rod (413). An end of the first side push rod (413) away from the first side cylinder (411) is connected to a side needle plate (415) via an angle adjustment assembly (42). The second side cylinder (412) is connected to a second side push rod (414). An end of the second side push rod (414) away from the second side cylinder (412) is hinged to the side needle plate (415).

3. The trapezoidal preform needling mechanism according to claim 2, characterized in that: The side needling mechanism (4) further comprises a position adjustment assembly (43) for adjusting the position of the side needling assembly (41), the position adjustment assembly (43) comprising a side adjustment cylinder (431), a side slide plate (432), and a side connecting plate (434); the first side cylinder (411) and the second side cylinder (412) are both fixed on the side slide plate (432), the side adjustment cylinder (431) is fixed on the vertical support (24), the output end of the side adjustment cylinder (431) is connected to the side slide plate (432) via the side connecting plate (434), and the side adjustment cylinder (431) drives the side slide plate (432) to move along a horizontal side slide rail (25) located on the vertical support (24).

4. The trapezoidal preform needling mechanism according to claim 2, characterized in that: The angle adjustment assembly (42) comprises an adjustment screw (421) and an adjustment sleeve (422), one end of the adjustment sleeve (422) is rotatably connected to the first lateral push rod (413), and the other end is threadedly connected to the adjustment screw (421), and the end of the adjustment screw (421) away from the adjustment sleeve (422) is movably connected to the side needle plate (415), and the adjustment sleeve (422) is used to adjust the extension and contraction amount of the adjustment screw (421) to adjust the angle of the side needle plate (415).

5. The trapezoidal preform needling mechanism according to claim 4, characterized in that: An opposite ear plate (423) is fixedly provided at one end of the adjusting screw (421) away from the adjusting sleeve (422), a vertical plate (425) is fixed to the back of the side needle plate (415), a T-shaped slot (426) is provided on the vertical plate (425), a T-shaped block (424) extending outward is slidably connected in the T-shaped slot (426), the T-shaped block (424) is inserted between the opposite ear plates (423) and is hinged to the ear plates (423); the vertical plate The end of (425) is fixedly connected to a transverse plate (427), and the transverse plate (427) is parallel to the T-shaped block (424); the transverse plate (427) is provided with a first threaded hole extending therethrough, and the T-shaped block (424) is provided with a second threaded hole coaxial with the first threaded hole of the transverse plate (427), and the sliding of the T-shaped block (424) in the T-shaped slot (426) is limited by an adjustment bolt (428) passing through the first threaded hole and inserted into the second threaded hole.

6. The trapezoidal preform needling mechanism according to claim 1, characterized in that: The upper needling mechanism (3) comprises at least one upper cylinder, an upper push rod and an upper needle plate (35), one end of the upper push rod in the longitudinal direction is fixedly connected to the upper needle plate, and the other end is connected to the upper cylinder, and the upper cylinder drives the upper push rod to push the upper needle plate (35) downward toward the needling mold (6) or upward away from the needling mold (6) to complete the needling of the upper surface of the trapezoidal preform.

7. An acupuncture device comprising a base (1) and a main frame (2) fixed on the base (1), characterized in that: The main frame (2) is provided with an upper needling mechanism (3) for needling the upper surface of the trapezoidal preform as claimed in any one of claims 1 to 6, and a side needling mechanism (4) for needling the side surfaces of the trapezoidal preform.

8. The acupuncture device according to claim 7, characterized in that The acupuncture device further comprises a movable platform (5) for supporting and driving the acupuncture mold (6), wherein the movable platform (5) comprises a platform body (51); a guide groove (511) is provided on the bottom surface of the platform body (51), and the guide groove (511) cooperates with a movable guide rail (11) provided on the base (1), and the platform body (51) is driven to move along the movable guide rail (11) by a movable assembly (58).

9. The acupuncture device according to claim 8, characterized in that The mobile platform (5) further comprises a lifting cylinder (52) fixedly connected to the platform body (51), and a tray (53) located on top of the output end of the lifting cylinder (52); the acupuncture mold (6) is fixed on the tray (53) and is lifted and lowered by the lifting cylinder (52).

10. The acupuncture device according to claim 9, characterized in that The mobile platform (5) further comprises a driving wheel (54) driven by a motor, a driven wheel (55) connected to a bearing of the lifting cylinder (52), and a transmission member (56) connecting the driving wheel (54) and the driven wheel (55). A plurality of linkage components (57) capable of synchronously rising and falling with the lifting cylinder (52) are provided between the driven wheel (55) and the tray (53). One end of the linkage component (57) is fixed to the driven wheel (55) and the other end is fixed to the tray (53). The driven wheel (55) drives the tray (53) to rotate synchronously through the linkage component (57).

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