Right-angle acupuncture mechanism and acupuncture equipment

Abstract

The present invention provides a right-angle needling mechanism and needling equipment, belonging to the technical field of carbon fiber product production equipment, including a first right-angle needling assembly and a second needling assembly, a position adjustment assembly that drives the first right-angle needling assembly and the second needling assembly to approach or move away from a preform, and an angle adjustment assembly that changes the needling angles of the first right-angle needling assembly and the second needling assembly, the angle adjustment assembly and the first right-angle needling assembly and the second needling assembly are located on the adjustment assembly, the first right-angle needling assembly includes a first right-angle needle plate, the second right-angle needling assembly includes a second right-angle needle plate, the first right-angle needle plate and the second right-angle needle plate respectively needling one side of the right-angle part of the preform. The technical solution of the present invention can effectively needling preforms with angles such as squares, especially the right-angle parts of preforms.

Description

Technical Field

[0001] The invention relates to the technical field of carbon fiber product production equipment, and in particular to a right-angle needling mechanism and needling equipment. Background Art

[0002] Carbon / carbon (C / C) composites are carbon-based composites reinforced with carbon fibers and their fabrics. They have 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 the fields of machinery, electronics, chemical industry, metallurgy and nuclear energy, and are widely used in key components in the fields of aerospace, aviation and national defense. Among them, the molding of preforms is the prerequisite for the preparation of carbon / carbon composites.

[0003] Needle punching is a commonly used process in the preform forming process. Needle punching technology can introduce the in-plane fibers in the fiber composite layer such as weft-free cloth and mesh tire into the thickness direction to form a unique three-dimensional mesh preform. Needle punching preform overcomes the shortcomings of weak interlayer performance of two-dimensional fiber structure and has a higher damage tolerance. In addition, needle punching can prepare various large-sized and complex-shaped preforms, and currently occupies an important position in the carbon fiber preform forming process.

[0004] The shapes of preforms in the prior art are mainly concentrated in circular, crucible-shaped, barrel-shaped, annular, conical structures and the like. For example, CN115125670A discloses an automated production equipment for carbon-carbon composite preforms, which is used for the production of preforms with a circular middle and crucible-shaped ends; CN109898238A discloses a multi-head high-efficiency rotary preform needle forming equipment, which is used for the forming of preforms with conical structures; CN118360730A discloses a carbon fiber crucible preform needle punching machine, which is an improvement on the crucible preform processing equipment. The preforms in the above-mentioned prior art are all round or arc-shaped in appearance, and are relatively easy to process.

[0005] However, with the continuous upgrading of industry demand, some unconventional carbon / carbon (C / C) composite materials products have been required, such as carbon / carbon saggers. The carbon / carbon sagger is a cubic shape with one side open. It is a high-temperature container made of carbon / carbon composite materials. It is often used as a sintering container for lithium battery negative electrode materials and lithium iron phosphate positive electrode materials, as well as high-temperature powder metallurgy sintering boats, etc. It has the properties of light weight, high strength, good thermal shock resistance, high purity, and strong wear resistance. At present, most manufacturers use the method of splicing carbon / carbon plates to make carbon / carbon saggers, which has the disadvantages of powder leakage, low structural strength, and short mission life during use. For example, CN116947520A discloses a method for preparing a carbon-carbon sagger preform, which adopts a splicing method. The technical solution is to stack and lay a first open box flat composite sheet, a second open box flat composite sheet and a third open box flat composite sheet in any order on the surface of a rectangular mold to form an open box, demold, heat and harden, and obtain a carbon-carbon sagger preform.

[0006] Therefore, it is very necessary to prepare an integral carbon / carbon sagger preform. Since the square structure preform for making carbon / carbon sagger is relatively rare, the preparation of the integral square preform at this stage mainly adopts the method of manual acupuncture, which is inefficient and difficult to standardize, resulting in difficulty in ensuring product quality. Existing acupuncture equipment is more suitable for acupuncture operations of preforms with rounded corners, etc., and is not suitable for the preparation of preforms with non-rounded corners.

[0007] Therefore, how to efficiently, high-quality and standardizedly perform needle punching of square and other angled preforms has become an urgent problem to be solved. Summary of the invention

[0008] In view of the above problems, the present invention provides a right-angle needling mechanism and a needling device to solve the difficulty in the prior art that it is impossible to effectively needle preforms with angles such as square shapes.

[0009] The present invention provides a right-angle needling mechanism, which is fixed on the main frame of the needling equipment to needle the right-angle part of the preform, including a first right-angle needling component and a second needling component, a position adjustment component that drives the first right-angle needling component and the second needling component to approach or move away from the preform, and an angle adjustment component that changes the needling angle of the first right-angle needling component and the second needling component. The angle adjustment component and the first right-angle needling component and the second needling component are located on the adjustment component. The first right-angle needling component includes a first right-angle needle plate, and the second right-angle needling component includes a second right-angle needle plate. The first right-angle needle plate and the second right-angle needle plate respectively needle one side of the right-angle part of the preform.

[0010] As a further improvement of the present invention, the main frame includes a first portal frame and a second portal frame, the first portal frame and the second portal frame are arranged relatively to each other, the position adjustment component includes two right-angle slides located between the first portal frame and the second portal frame, a connecting plate fixedly connecting the two right-angle slides, and a right-angle adjustment cylinder fixed on the outer side surface of the first portal frame and / or the second portal frame, the right-angle adjustment cylinder is connected to the connecting plate to drive the right-angle slide to move along the right-angle slide rails arranged on the inner side surfaces of the first portal frame and the second portal frame.

[0011] As a further improvement of the present invention, the angle adjustment assembly includes a driving component and an adjusting component, the first right-angle needling assembly also includes a first right-angle cylinder and a first right-angle push rod respectively connected to the first right-angle cylinder and the first right-angle needle plate, the second right-angle needling assembly also includes a second right-angle cylinder and a first right-angle push rod respectively connected to the second right-angle cylinder and the first right-angle needle plate, the first right-angle cylinder and the second right-angle cylinder are respectively connected to the adjusting component, and the driving component drives the adjusting component to adjust the angle between the first right-angle cylinder and the second right-angle cylinder.

[0012] As a further improvement of the present invention, the driving component includes a first bidirectional driving cylinder fixed on the top surface of the connecting plate and a second bidirectional driving cylinder fixed on the bottom surface of the connecting plate, the two ends of the first bidirectional driving cylinder are respectively connected to the first driving rod, the two ends of the second bidirectional driving cylinder are respectively connected to the second driving rod, the end of the first driving rod away from the first bidirectional driving cylinder is connected to the adjusting component, the end of the second driving rod away from the second bidirectional driving cylinder is connected to the adjusting component, the first bidirectional driving cylinder and the second bidirectional driving cylinder cooperate to drive the adjusting component to adjust the angle between the first right-angle cylinder and the second right-angle cylinder.

[0013] As a further improvement of the present invention, the adjustment component includes a moving rod connected to the first driving rod, a second U-shaped plate connected to the second driving rod and with an opening facing away from the first driving rod, a first U-shaped plate located between the moving rod and the second U-shaped plate and with an opening facing the second U-shaped plate, and two movable plates located in the second U-shaped plate, the first U-shaped plate being fixedly connected to the second U-shaped plate, the movable plate being rotatably connected to the second U-shaped plate, the first right-angle cylinder and the second right-angle cylinder being respectively located between the two movable plates and fixedly connected to the movable plates, the bottom end of the moving rod being fixedly connected to a first pull rod which is parallel to the first driving rod and passes through the bottom plate of the first U-shaped plate, the end of the first pull rod away from the moving rod being hinged to a second pull rod, the end of the second pull rod away from the first pull rod being rotatably connected to a pushing rod whose two ends in the length direction are respectively fixedly connected to the two movable plates; the second U-shaped plate slides on the right-angle slide in a direction parallel to the first driving rod.

[0014] As a further improvement of the present invention, a sliding slot parallel to the first driving rod is provided on the outer surface of the side plate of the second U-shaped plate, and a supporting rail matching the sliding slot is provided on the inner surface of the right-angle slide.

[0015] The present invention discloses a needling device, comprising a base and a main frame fixed on the base, wherein the main frame is provided with a needling mechanism for needling the upper surface of the preform, a side needling mechanism for needling the side of the preform, and the right-angle needling mechanism for needling the right-angle part of the preform.

[0016] As a further improvement of the present invention, the side needling mechanisms are symmetrically arranged on the main frame, and the right-angle needling mechanisms are symmetrically arranged on the main frame.

[0017] As a further improvement of the present invention, the side needling mechanism includes at least one horizontally arranged side cylinder, at least one side push rod and a side needle plate, wherein the side cylinder is fixed on a side slide plate, and the side slide plate approaches or moves away from the needling mold under the action of a horizontally arranged side adjustment cylinder fixed on a main frame.

[0018] 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, the mobile platform includes a platform body, and a guide groove is provided on the bottom surface of the platform. The guide groove cooperates with a movable guide rail arranged on the base so that the platform body can move along the movable guide rail to adjust the acupuncture position of the preform.

[0019] As a further improvement of the present invention, the mobile platform includes a rotating mechanism and a lifting mechanism for adjusting the position of the acupuncture mold in space.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention provides a right-angle needling mechanism and a needling device. By providing a right-angle needling mechanism including a first right-angle needling assembly and a second needling assembly, a position adjustment assembly for driving the first right-angle needling assembly and the second needling assembly to approach or move away from a preform, and an angle adjustment assembly for changing the needling angles of the first right-angle needling assembly and the second needling assembly, effective needling of the right-angle portion of a square preform is achieved, filling the gap in equipment for efficiently manufacturing square preforms and innovating the existing method for manufacturing square preforms.

[0022] 2. Although some existing equipment has an R-angle mechanism, it can only perform unidirectional needling during operation, which will cause the right-angle part to collapse due to lack of support. However, the right-angle needling mechanism and needling equipment provided by the present invention can simultaneously needle both sides of the right angle through the first and second right-angle needling components and can form mutual support for the corners of the preform during needling, effectively avoiding the collapse of one side when needling the right-angle part alone, thereby ensuring that the shape of the right-angle position is regular, the density is uniform, and the strength meets the standards.

[0023] 3. The right-angle needling mechanism and needling equipment provided by the present invention solve the difficulty of low preform processing efficiency caused by the small number of effective working needle plates faced by existing equipment by setting a multi-system multi-dimensional needle plate, and reduce the time cost. Compared with the existing equipment equipped with a single needle plate that can only process one surface of the product each time, the use of this equipment can simultaneously process three surfaces (top surface and two side surfaces) and right-angle parts of the product, saving more than 70% of processing time.

[0024] 4. The right-angle needling mechanism and needling equipment provided by the present invention can not only adapt to the needling of square preforms of different specifications or sizes by providing a side needle plate with a laterally adjustable position and a movable platform that can be raised and lowered, but also can be adjusted accordingly to suit preforms of other shapes according to actual needs, thereby greatly improving the practicability and utilization rate of the equipment and reducing the capital investment in basic equipment.

[0025] 5. 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

[0026] Figure 1 It is a schematic diagram of the position of the right-angle acupuncture mechanism in the acupuncture device according to an embodiment of the present invention.

[0027] Figure 2 is a side view of an acupuncture device according to an embodiment of the present invention.

[0028] Figure 3 It is a schematic structural diagram of a right-angle acupuncture mechanism according to an embodiment of the present invention.

[0029] Figure 4 It is a schematic diagram of the overall structure of the right-angle acupuncture mechanism of an embodiment of the present invention.

[0030] Figure 5 It is a schematic diagram of the internal structure of the right-angle acupuncture mechanism of an embodiment of the present invention.

[0031] Figure 6 It is a partial cross-sectional view of the right-angle acupuncture mechanism of an embodiment of the present invention.

[0032] Figure 7 yes Figure 6 A partial enlarged view of part A.

[0033] Figure 8 It is a schematic structural diagram of the side acupuncture mechanism of an embodiment of the present invention.

[0034] Fig. 9 It is a schematic structural diagram of the upper acupuncture mechanism of an embodiment of the present invention.

[0035] Fig.10 is a cross-sectional view of a mobile platform according to an embodiment of the present invention.

[0036] Description of reference numerals: 1, base; 11, movable guide rail; 2, main frame; 21, first door frame; 211, right-angle avoidance; 212, lateral avoidance; 22, second door frame; 23, crossbeam; 24, vertical support; 25, right-angle slide rail; 26, lateral slide rail; 3, upper acupuncture mechanism; 31, first upper cylinder; 32, second upper cylinder; 33, first upper push rod; 34, second upper push rod; 35, upper needle plate; 4, lateral acupuncture mechanism; 4 1. First lateral cylinder; 42. Second lateral cylinder; 43. First lateral push rod; 44. Second lateral push rod; 45. Side needle plate; 46. Lateral adjustment cylinder; 47. Side slide plate; 471. Side slide groove; 48. Side connecting plate; 49. Guide; 5. Right-angle needle piercing mechanism; 51. Position adjustment component; 511. Right-angle slide plate; 512. Connecting plate; 513. Support rail; 514. Right-angle slide groove; 515. Cylinder push plate; 516 , right angle adjustment cylinder; 52, angle adjustment assembly; 521, driving component; 5211, first two-way driving cylinder; 5212, second two-way driving cylinder; 5213, first driving rod; 5214, second driving rod; 522, adjustment component; 5221, moving rod; 5222, first pull rod; 5223, second pull rod; 5224, support block; 5225, first U-shaped plate; 5226, second U-shaped plate; 5227, movable Moving plate; 5228, pushing rod; 5229, sliding slot; 53, first right-angle needling assembly; 531, first right-angle cylinder; 532, first right-angle push rod; 533, first right-angle needle plate; 54, second right-angle needling assembly; 541, second right-angle cylinder; 542, second right-angle push rod; 543, second right-angle needle plate; 6, moving platform; 61, platform body; 611, guide groove; 62, rotating shaft; 63, tray; 7, needling mold. DETAILED DESCRIPTION

[0037] The following is combined with specific embodiments and appendix Figure 1-10 The invention is described in detail so that those skilled in the art can more fully understand the purpose, features and effects of the invention.

[0038] Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as commonly understood by those skilled in the art to which the present invention belongs. When the definition of a term in the present invention conflicts with the meaning commonly understood by those skilled in the art to which the present invention belongs, the definition described in the present invention shall prevail.

[0039] The present invention provides a right-angle needling mechanism and needling equipment to perform efficient and high-quality standardized needling on the right-angle positions of square or other angular carbon-carbon composite material preforms, especially the bottom corners of the preforms, to obtain preforms that meet the requirements.

[0040] Embodiment 1

[0041] As a specific embodiment of the present invention, this embodiment provides a right-angle needling mechanism, which is described by needling a square carbon / carbon sagger preform. Figure 1 , Figure 2 The right-angle needling mechanism is located on the needling device, and the needling device includes a base 1, a main frame 2 fixed on the base 1, an upper needling mechanism 3, a side needling mechanism 4, a right-angle needling mechanism 5, a cubic needling mold 7, and a mobile platform 6 for placing the needling mold 7. The main frame 2 includes a crossbeam 23 and a vertical support 24. The upper needling mechanism 3 is located on the crossbeam 23 and is used to needle the upper surface of the preform. The side needling mechanism 4 is located on the vertical support 24 and is used to needle the side of the preform. The right-angle needling mechanism 5 is located at the connection between the crossbeam 23 and the vertical support 24 and is inclined, and is used to needle the position within the right angle range of the connection between the upper surface and the side of the square carbon / carbon sagger preform.

[0042] The main frame 2 includes a first door frame 21 and a second door frame 22, and the first door frame 21 and the second door frame 22 both include a crossbeam 23 and a vertical support 24. The crossbeam 23 and the vertical support 24 are both plate-shaped. The bottom end of the vertical support 24 is fixedly connected to the base 1.

[0043] This embodiment is described by taking the right-angle acupuncture mechanism 5 located at the upper left corner of the main frame 2 as an example. Figure 3 , Figure 4 , Figure 5 , the right-angle needling mechanism 5 is located between the first door frame 21 and the second door frame 22. The right-angle needling mechanism 5 includes a position adjustment component 51, an angle adjustment component 52, a first right-angle needling component 53, and a second right-angle needling component 54. The position adjustment component 51 drives the first right-angle needling component 53 and the second right-angle needling component 54 to move obliquely to approach or move away from the right-angle part of the needling mold 7, and the first right-angle needling component 53 and the second right-angle needling component 54 simultaneously needle the position of the right-angle part of the preform, wherein the first right-angle needling component 53 needs to needle the position adjacent to the side of the right-angle part of the preform, and the second right-angle needling component 54 needs to needle the position adjacent to the upper surface of the right-angle part of the preform.

[0044] It should be noted that, for existing equipment, there are generally only upper needling components and side needling components, and the components cannot carry out needling at the right angle at the same time. Even if an R-angle needling mechanism is introduced, since it can only carry out needling in one direction, the right angle will cause collapse due to lack of support, and the needling quality of the right angle cannot be guaranteed. In the present invention, the first and second right-angle needling components can needle both sides of the right angle at the same time and can form mutual support for the corners of the preform during needling, thereby ensuring that the shape of the right angle is regular, the density is uniform, and the strength meets the standards, effectively avoiding the collapse of one side when needling the right angle alone.

[0045] according to Figure 1 When the right-angle needling mechanism 5 is located at the upper right corner of the main frame 2, since the right-angle needling mechanism 5 is tilted toward the lower left corner, the upper and lower relationships of the first right-angle needling component 53 and the second right-angle needling component 54 are swapped. The first right-angle needling component 53 performs needling on the position adjacent to the upper surface of the right-angle part of the preform, and the second right-angle needling component 54 performs needling on the position adjacent to the side of the right-angle part of the preform.

[0046] Specifically, the position adjustment assembly 51 includes a relative right-angle slide plate 511, a connecting plate 512, a cylinder push plate 515 and a right-angle adjustment cylinder 516. The right-angle slide plate 511 is tilted, and the relative right-angle slide plate 511 is located between the first door frame 21 and the second door frame 22 and is fixedly connected at the top by the connecting plate 512. The cylinder push plate 515 is an angle plate, one end of which is fixedly connected to the connecting plate 512, and the other end is fixedly connected to the piston rod of the right-angle adjustment cylinder 516. The right-angle adjustment cylinder 516 is fixed on the side of the first door frame 21 away from the second door frame 22 and is tilted, and the right-angle adjustment cylinder 516 is perpendicular to the connecting plate 512. The piston rod of the right-angle adjustment cylinder 516 extends obliquely upward. In a feasible embodiment, the right-angle adjustment cylinder 516 can also be fixed on the side of the second door frame 22 away from the first door frame 21 and tilted. In addition, right-angle adjustment cylinders 516 may be provided on both the first portal frame 21 and the second portal frame 22 .

[0047] The first door frame 21 and the second door frame 22 are fixed with right angle rails 25 parallel to the extension and contraction direction of the piston rod of the right angle adjustment cylinder 516, and two right angle rails 25 are arranged at intervals. The right angle sliding grooves 514 cooperating with the right angle rails 25 are respectively provided on the opposite sides of the right angle slide plate 511.

[0048] The angle adjustment component 52 and the right-angle acupuncture component are located on the position adjustment component 51, and the angle adjustment component 52 can adjust the distance between the first right-angle acupuncture component 53 and the second right-angle acupuncture component 54 and the relative angle between the first right-angle acupuncture component 53 and the second right-angle acupuncture component 54.

[0049] Furthermore, a right-angle avoidance opening 211 is provided on the first door frame 21 to allow the cylinder push plate 515 to pass through. The right-angle avoidance opening 211 can guide the cylinder push plate 515, thereby improving the overall stability of the right-angle acupuncture mechanism 5.

[0050] When the piston rod of the right-angle adjustment cylinder 516 extends outward, it drives the right-angle slide plate 511 to slide obliquely upward along the right-angle slide rail 25, so that the first right-angle needling assembly 53 and the second right-angle needling assembly 54 connected to the position adjustment assembly 51 are away from the right-angle portion of the preform or the needling mold 7. When the piston rod of the right-angle adjustment cylinder 516 is retracted, it drives the right-angle slide plate 511 to slide obliquely downward along the right-angle slide rail 25, so that the first right-angle needling assembly 53 and the second right-angle needling assembly 54 connected to the position adjustment assembly 51 are close to the right-angle portion of the preform or the needling mold 7. The main function of the position adjustment assembly 51 is to adjust the distance between the first right-angle needling assembly 53 and the second right-angle needling assembly 54 and the preform, so that it can be better applied to the right-angle needling of preforms of various specifications or sizes.

[0051] Specifically, the first right-angle needle punching assembly 53 includes a first right-angle cylinder 531 connected to the angle adjustment assembly 52, a first right-angle push rod 532 connected to the first right-angle cylinder 531, and a first right-angle needle plate 533 fixed to one end of the first right-angle push rod 532 away from the first right-angle cylinder 531; the second right-angle needle punching assembly 54 includes a second right-angle cylinder 541 connected to the angle adjustment assembly 52, a second right-angle push rod 542 connected to the second right-angle cylinder 541, and a second right-angle needle plate 543 fixed to one end of the second right-angle push rod 542 away from the second right-angle cylinder 541. The first right-angle needle plate 533 and the second right-angle needle plate 543 are respectively used to needle the positions on both sides of the horizontal right-angle part of the preform.

[0052] Reference Figure 4 , Figure 5 The angle adjustment assembly 52 includes a driving component 521 and an adjusting component 522, wherein the driving component 521 includes a first bidirectional driving cylinder 5211 fixed on the top surface of the connecting plate 512 and a second bidirectional driving cylinder 5212 fixed on the bottom surface of the connecting plate 512. Both ends of the first bidirectional driving cylinder 5211 are respectively connected to a first driving rod 5213, and both ends of the second bidirectional driving cylinder 5212 are respectively connected to a second driving rod 5214.

[0053] The adjustment component 522 includes a moving rod 5221 fixed to one end of the first driving rod 5213 away from the first two-way driving cylinder 5211. The moving rods 5221 are two and perpendicular to the first driving rod 5213. The second two-way driving cylinder 5212 is located between the two moving rods 5221. A support block 5224 is fixedly connected to one end of the second driving rod 5214 away from the second two-way driving cylinder 5212. The length direction of the support block 5224 is parallel to the moving rod 5221. The bottom end of the support block 5224 is fixedly connected to a second U-shaped plate 5226 parallel to the moving rod 5221 and opening downward. A relative movable plate 5227 is arranged in the second U-shaped plate 5226. The first right-angle cylinder 531 and the second right-angle cylinder 541 are located between the relative movable plates 5227 and are fixedly connected to the movable plates 5227 respectively. The upper part of the movable plate 5227 is rotatably connected to the second U-shaped plate 5226 through a connecting member.

[0054] The outer surface of the side plate of the second U-shaped plate 5226 is provided with a sliding slot 5229 parallel to the first driving rod 5213, and the inner surface of the right-angle slide plate 511 is provided with a supporting rail 513 matching the sliding slot 5229. Under the action of the second bidirectional driving cylinder 5212, the second driving rod 5214 drives the two second U-shaped plates 5226 to move closer or farther away, thereby adjusting the distance between the second U-shaped plates 5226, and further adjusting the distance between the first right-angle acupuncture assembly 53 and the second right-angle acupuncture assembly 54.

[0055] Combination Figure 6 , Figure 7 A first U-shaped plate 5225 is disposed between the lower portion of the second U-shaped plate 5226 and the moving rod 5221, with its opening facing the second U-shaped plate 5226 and perpendicular to the second U-shaped plate 5226. Preferably, the first U-shaped plate 5225 and the second U-shaped plate 5226 are integrally formed.

[0056] The bottom end of the moving rod 5221 is fixedly connected with a first pull rod 5222 which is parallel to the first driving rod 5213 and passes through the bottom plate of the first U-shaped plate 5225. The end of the first pull rod 5222 away from the moving rod 5221 is hinged with a second pull rod 5223. The end of the second pull rod 5223 away from the first pull rod 5222 is rotatably connected with a push rod 5228 which is respectively fixedly connected to the opposite movable plate 5227 at both ends in the length direction. The second pull rod 5223 can pull the movable plate 5227 to rotate. Due to the restrictions of the second pull rod 5223 and the push rod 5228, the movable plate 5227 cannot move freely, thereby ensuring the stability of the right-angle acupuncture assembly fixed on the movable plate 5227.

[0057] During use, when the strokes of the first two-way drive cylinder 5211 and the second two-way drive cylinder 5212 are the same, the first U-shaped plate 5225 moves synchronously with the first pull rod 5222, and only the distance between the first right-angle needle plate 533 of the first right-angle acupuncture assembly 53 and the second right-angle needle plate 543 of the second right-angle acupuncture assembly 54 changes without causing any change in angle.

[0058] When the first two-way drive cylinder 5211 stops, the second two-way drive cylinder 5212 pushes the second U-shaped plate 5226 to move outward. At this time, since the first pull rod 5222 is stationary, relative movement occurs between the first pull rod 5222 and the first U-shaped plate 5225, and the second pull rod 5223 drives the push rod 5228 to drive the movable plate 5227 to rotate, so that the angle between the lower part of the relative movable plate 5227 becomes smaller, and then the angle between the first right-angle needle plate 533 and the second right-angle needle plate 543 becomes smaller, thereby realizing the adjustment of the angle between the first right-angle acupuncture assembly 53 and the second right-angle acupuncture assembly 54 (the distance also changes at the same time).

[0059] The right-angle needling mechanism of the present embodiment is used to needle a square preform having a shape different from that of the preform in the prior art, and the right-angle parts (the upper surface and the side parts close to the right angle) are needled at the same time by the right-angle needle plates of two relatively independent right-angle needling assemblies, thereby ensuring the needling effect of the right-angle parts. In addition, since the needle plates on both sides form support for the preform during needling, the collapse of the parts that affects the needling quality is avoided.

[0060] Embodiment 2

[0061] As another specific embodiment of the present invention, the present invention provides a needling device, which at least includes the right-angle needling mechanism 5 in the first embodiment. In the present invention, the driving parts that reciprocate and drive the needle plate to perform the needling operation of the preform are all cylinders. Therefore, in the following description, the direct drive of the needle plate is the cylinder, and the stroke and operating state of all cylinders can be set and adjusted separately through the PLC program.

[0062] Furthermore, the acupuncture device provided in this embodiment also includes an upper acupuncture mechanism 3 and a side acupuncture mechanism 4 .

[0063] The right-angle needling mechanism 5 is symmetrically arranged on the main frame 2 to improve the right-angle needling efficiency.

[0064] Reference Figure 1 , Figure 2The upper needling mechanism 3, the side needling mechanism 4 and the right-angle needling mechanism 5 of the needling device provided in this embodiment are staggered and distributed along the direction of the moving guide rail 11 of the base 1, and will not interfere with each other in operation, wherein the right-angle needling mechanism 5 is located between the upper needling mechanism 3 and the side needling mechanism 4. In actual operation, the needling mold 7 first enters the needling area of ​​the side needling mechanism 4, then enters the needling area of ​​the right-angle needling mechanism 5, and finally enters the needling area of ​​the upper needling mechanism 3. Since the preform has a certain volume, the three needling mechanisms can operate simultaneously to improve the needling efficiency.

[0065] Reference Figure 1 , Fig. 9 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 to the needling mold 7 or upward away from the needling mold 7 to complete the needling of the upper surface of the preform.

[0066] Specifically, in the present embodiment, the upper needling mechanism comprises a first upper cylinder 31 and a second upper cylinder 32 which are arranged vertically, and the first upper cylinder 31 and the second upper cylinder are both fixed on the side of the crossbeam 23 of the second portal frame 22 which faces 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 crossbeam 23, thereby ensuring that the upper needle plate 35 is subjected to uniform force, so as to improve the needling quality of the upper surface of the preform.

[0067] The first upper cylinder 31 pushes the upper needle plate 35 through the first upper push rod 33, and the second upper cylinder 32 pushes the upper needle plate 35 through the second upper push rod 34 to perform acupuncture. 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, and effective acupuncture is formed on the upper surface of the preform to avoid the situation where acupuncture is not in place in some areas.

[0068] Reference Figure 1 , Figure 8 The side needling mechanism 4 is located on the vertical support 24 of the first door frame 21, and is arranged on both vertical supports 24 of the first door frame 21, so that the side of the preform on the needling mold 7 in the middle can be needled at the same time, thereby improving the needling efficiency.

[0069] This embodiment is described by taking one of the side needling mechanisms 4. The side needling mechanism 4 comprises at least one side cylinder, a side push rod and a side needle plate 45. One end of the side push rod in the length direction is fixedly connected to the side needle plate 45, and the other end is connected to the side cylinder. The side needle plate 45 is vertically arranged and faces the needling mold 7. The side cylinder drives the side push rod to push the side needle plate 45 to reciprocate to complete the needling operation on the side of the preform.

[0070] Specifically, in the present embodiment, the side needling mechanism 4 includes a first side cylinder 41 and a second side cylinder 42 which are arranged horizontally, and the first side cylinder 41 and the second side cylinder 42 are arranged at intervals up and down. The first side cylinder 41 and the second side cylinder 42 are located on the side of the vertical support 24 of the first portal frame 21 which faces away from the second portal frame 22. The first side cylinder 41 drives the side needle plate 45 to move through the first side push rod 43, and the second side cylinder 42 drives the side needle plate 45 to move through the second side push rod 44, so as to carry out needling operation on the preform. It should be noted that the strokes of the first side cylinder 41 and the second side cylinder 42 are exactly the same, so that the side needle plate 45 is always in a vertical state, so as to form a completely effective needling on the side of the preform and avoid the situation that the needling of some areas is not in place.

[0071] Furthermore, 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 45. In this embodiment, the first side cylinder 41 and the second side cylinder 42 are not directly fixed on the vertical support 24 of the first door frame 21, but the first side cylinder 41 and the second side cylinder 42 are arranged to be horizontally adjustable. Specifically, as Figure 8 As shown, the side acupuncture mechanism 4 also includes a side adjustment cylinder 46, a side slide plate 47, and a side connecting plate 48. The first side cylinder 41 and the second side cylinder 42 are both fixed on the side slide plate 47. The side slide plate 47 is located between the first side cylinder 41 and the vertical support 24 of the first door frame 21 and is in close contact with the vertical support 24. A horizontal side slide rail 26 protruding outward is fixed on the side of the vertical support 24 of the first door frame 21 facing the side slide plate 47, and a side slide groove 471 cooperating with the side slide rail 26 of the side slide rail 26 is provided on the side of the side slide plate 47 facing the vertical support of the first door frame 21. The side slide plate 47 can move along the side slide rail 26, thereby driving the first side cylinder 41 and the second side cylinder 42 to move horizontally. On the other hand, the side slide rail 26 also plays a fixed support effect on the side slide plate 47.

[0072] A horizontal lateral adjustment cylinder 46 is fixed to the side of the vertical support 24 of the first door frame 21 facing away from the side slide plate 47, and the piston rod of the lateral adjustment cylinder 46 extends in a direction away from the side needle plate 45. The piston rod of the lateral adjustment cylinder 46 and the side slide plate 47 are connected by a side connecting plate 48. When the piston rod of the lateral adjustment cylinder 46 extends outward, the side slide plate 47 is driven to move away from the acupuncture mold 7, and when the piston rod of the lateral adjustment cylinder 46 is retracted inward, the side slide plate 47 is driven to move toward the acupuncture mold 7, thereby realizing the change of the position of the first lateral cylinder 41 and the second lateral cylinder 42 for acupuncture operation.

[0073] Preferably, the vertical support 24 of the first door frame 21 is provided with a lateral avoidance opening 212 allowing the side connecting plate 48 to move. When the side connecting plate 48 moves under the drive of the lateral adjustment cylinder 46, it moves along the lateral avoidance opening 212. The vertical support 24 of the first door frame 21 plays a certain supporting role on the side connecting plate 48, thereby enhancing the stability of the entire side acupuncture mechanism 4.

[0074] Preferably, a guide member 49 fixed on the side slide plate 47 is provided between the first lateral cylinder 41 and the side needle plate 45, and between the second lateral cylinder 42 and the side needle plate 45, and the first lateral push rod 43 and the second lateral push rod 44 pass through the guide holes provided in the guide member 49. The guide member 49 has a guiding function for the first lateral push rod 43 and the second lateral push rod 44 on the one hand, and a supporting function for the first lateral push rod 43 and the second lateral push rod 44 on the other hand, so as to ensure that the side needle plate 45 connected with the first lateral push rod 43 and the second lateral push rod 44 is in a stable vertical state, so as to avoid the side needle plate 45 from tilting, and also avoid the risk of the first lateral push rod 43 and the second lateral push rod 44 from bending.

[0075] Reference Figure 1 , Fig.10 , the mobile platform 6 includes a platform body 61, and the platform body 61 is in the shape of a rectangular parallelepiped. The bottom surface of the platform body 61 is provided with guide grooves 611 that cooperate with the moving guide rails 11 of the base 1, and the number of the guide grooves 611 is equal to the number of the moving guide rails 11. Through the matched moving guide rails 11 and guide grooves 611, the platform body 61 can be pushed to move along the length direction of the moving guide rails 11, so as to adjust the horizontal position of the acupuncture mold 7 located on the mobile platform 6, so as to facilitate the acupuncture operation at different positions of the preform. In order to better move the platform body 61, a power mechanism can be used to push the platform body 61 to move along the moving guide rails 11. The power mechanism can adopt the power mechanism already available in the prior art, which will not be described in detail in this embodiment.

[0076] The mobile platform 6 also includes a rotating shaft 62 rotatably connected to the platform body 61, the upper part of the rotating shaft 62 extends out of the platform body 61, and a tray 63 is fixed to the top of the rotating shaft 62, and the tray 63 is bolted and fixedly connected to the acupuncture mold 7, and the rotating shaft 62 and the tray 63 jointly support the upper acupuncture mold 7. The bolt connection between the tray 63 and the acupuncture mold 7 also facilitates the replacement of different acupuncture molds 7, and the setting of the tray 63 also increases the support area of ​​the acupuncture mold 7, making the acupuncture mold 7 more stable.

[0077] The rotation of the rotating shaft 62 is preferably driven by a motor. For example, in one feasible embodiment, the motor can be placed in the platform body 61. Since the motor-driven rotation is a common existing technology in the field, it will not be described in detail in this embodiment. The motor rotates the rotating shaft 62, and the needling mold 7 rotates accordingly to achieve needling operations on different sides of the preform.

[0078] In addition, in order to adjust the position of the needling mold 7 in the vertical space so as to better needling the preform, a lifting mechanism can be provided to lift and lower the needling mold 7 while the needling mold 7 is rotated.

[0079] The lifting mechanism can be an existing technical means in the prior art, for example, a folding lifting mechanism and a platform (not shown) as shown in patent CN210505394U can be installed on the tray 63, and it can be adaptively improved to meet the requirements of this embodiment when applied to this embodiment. The acupuncture mold 7 is fixed above the lifting mechanism, and the area of ​​the tray 63 can be increased accordingly to facilitate the installation of the lifting mechanism. The lifting mechanism can also be other feasible mechanisms in the prior art, and this embodiment does not make specific restrictions.

[0080] During use, the right-angle needling mechanism 5 and the lifting needling mold 7 can be adjusted so that one of the right-angle needle plates of the right-angle needling mechanism 5 is aligned with the edge of the top of the preform, and the edge is effectively needled to ensure the needling density, which is very important for obtaining a high-quality finished preform.

[0081] The specific working steps of the acupuncture device of this embodiment are as follows:

[0082] 1. Select different acupuncture molds 7 according to different preform specifications and shapes, and fix the acupuncture molds 7 on the mobile platform 6;

[0083] 2. Move the unloaded needling mold 7 to the needling area through the mobile platform 6, and set the needling working range according to the specifications and dimensions of the preform and the designed needling depth: set the lateral needling working range by adjusting the side slide plate 47 so that the needling mold 7 is within the needling range of the side needle plate 45; adjust the needling working range in the height direction by lifting the mobile platform 6 so that the needling mold 7 is within the needling range of the upper needle plate 35; adjust the position adjustment component 51 and the angle adjustment component 52 so that the needling mold 7 is within the needling range of the right-angle needle plate;

[0084] For the side needling mechanism 4, firstly, the side adjustment cylinder 46 is started, and the side slide plate 47 is driven to approach or move away from the needling die 7 through the side connecting plate 48, and the distance between the first side cylinder 41 and the second side cylinder 42 and the needling die 7 also changes accordingly, so that when the first side cylinder 41 and the second side cylinder 42 are working, the needling die 7 is within the needling range of the side needle plate 45, and the side needling depth can be adjusted by the side adjustment cylinder 46;

[0085] For the right-angle needling mechanism 5, firstly start the right-angle adjustment cylinder 516 to drive the right-angle slide 511 to approach or move away from the needling die 7, and the distance between the first right-angle cylinder 531 and the second right-angle cylinder 541 on the right-angle slide 511 and the needling die 7 also changes accordingly. Afterwards, whether to adjust the distance and angle between the first right-angle needle plate 533 and the second right-angle needle plate 543 is selected as needed;

[0086] When the distance between the first right-angle needle plate 533 and the second right-angle needle plate 543 needs to be adjusted, the first two-way drive cylinder 5211 and the second two-way drive cylinder 5212 are started at the same time to move synchronously. At this time, the angle between the first right-angle needle plate 533 and the second right-angle needle plate 543 does not change.

[0087] When it is necessary to adjust the angle between the first right-angle needle plate 533 and the second right-angle needle plate 543, the first two-way driving cylinder 5211 stops, and the second two-way driving cylinder 5212 pushes the second U-shaped plate 5226 to move outward. At this time, since the first pull rod 5222 is stationary, relative movement occurs between the first pull rod 5222 and the first U-shaped plate 5225, and the second pull rod 5223 drives the push rod 5228 to drive the movable plate 5227 to rotate, so that the angle between the first right-angle push rod 532 and the lower part of the second right-angle push rod 542 becomes smaller, thereby reducing the angle between the first right-angle needle plate 533 and the second right-angle needle plate 543, thereby achieving the adjustment of the angle between the first right-angle needle plate 533 and the second right-angle needle plate 543;

[0088] Through the above adjustment, the position of the right-angle slide plate 511 and the distance and angle between the first right-angle needle plate 533 and the second right-angle needle plate 543 meet the requirements;

[0089] 3. Move the unloaded needle punching mold 7 out of the needle punching area through the mobile platform 6, and lay and fix the raw materials used to make the preform, such as carbon cloth, mesh tire, etc., on the needle punching mold 7;

[0090] 4. Move the needle punching mold 7 with the material into the needle punching area, start the equipment for needle punching, and the side needle plate 45, the upper needle plate 35 and the right-angle needle plate perform multi-system and multi-dimensional needle punching operations on the preform. During the needling process, the moving platform 6 moves along the moving guide rail 11 to realize automatic continuous needling;

[0091] Specifically, for upper needling, the first upper cylinder 31 and the second upper cylinder 32 are started synchronously, and the upper needle plate 35 is driven by the first upper push rod 33 and the second upper push rod 34 to needle the upper surface of the preform;

[0092] For side needling, the first side cylinder 41 and the second side cylinder 42 are started synchronously, and the side needle plate 45 is driven by the first side push rod 43 and the second side push rod 44 to needle the side of the preform;

[0093] For right-angle needling, the first right-angle cylinder 531 is started, and the first right-angle push rod 532 drives the first right-angle needle plate 533 to needle the right-angle part of the preform; the second right-angle cylinder 541 is started, and the second right-angle push rod 542 drives the second right-angle needle plate 543 to needle the right-angle part of the preform;

[0094] 5. After the needling of a pair of side surfaces and the top surface of the preform is completed, the preform is turned over by rotating the movable platform 6 so as to needle the remaining pair of side surfaces, and the upper surface of the preform is prevented from being needled repeatedly by lowering the movable platform 6 or closing the upper needling mechanism 3; the vertical right-angled edges of the preform are processed by rotating the preform and using the side needle plate 45;

[0095] 6. By adjusting the angle, position of the right-angle needle plate and the position of the preform, the needling processing of the top right-angle edge (top edge) is improved.

[0096] The right-angle needling mechanism and needling equipment of the present invention are particularly suitable for processing square preforms, such as sagger preforms. For preforms of other shapes, they can be adjusted accordingly according to actual needs. For example, the right-angle needling mechanism 5 can be used for processing preforms with obtuse angles at the connection between the two sides to enhance the needling strength of the connection.

[0097] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any modification or equivalent change made based on the technical essence of the present invention still falls within the scope of protection required by the present invention.

Claims

1. A right-angle needling mechanism, which is fixed on the main frame of the needling device to needle the right-angle part of the preform, characterized in that: It includes a first right-angle needling assembly and a second right-angle needling assembly, a position adjustment assembly for driving the first right-angle needling assembly and the second right-angle needling assembly to approach or move away from a preform, and an angle adjustment assembly for changing the needling angles of the first right-angle needling assembly and the second right-angle needling assembly, the angle adjustment assembly and the first right-angle needling assembly and the second right-angle needling assembly are located on the position adjustment assembly, the first right-angle needling assembly includes a first right-angle needle plate, the second right-angle needling assembly includes a second right-angle needle plate, and the first right-angle needle plate and the second right-angle needle plate respectively needle one side of a right-angle portion of the preform; The main frame includes a first door frame and a second door frame, and the first door frame and the second door frame are arranged opposite to each other; the position adjustment component includes two right-angle slides located between the first door frame and the second door frame, a connecting plate fixedly connecting the two right-angle slides, and a right-angle adjustment cylinder fixed on the outer side surface of the first door frame and / or the second door frame, and the right-angle adjustment cylinder is connected to the connecting plate to drive the right-angle slide to move along the right-angle slide rails arranged on the inner side surfaces of the first door frame and the second door frame; The angle adjustment assembly includes a driving component and an adjusting component. The first right-angle needling assembly also includes a first right-angle cylinder and a first right-angle push rod respectively connected to the first right-angle cylinder and the first right-angle needle plate. The second right-angle needling assembly also includes a second right-angle cylinder and a second right-angle push rod respectively connected to the second right-angle cylinder and the second right-angle needle plate. The first right-angle cylinder and the second right-angle cylinder are respectively connected to the adjusting component. The driving component drives the adjusting component to adjust the angle between the first right-angle cylinder and the second right-angle cylinder.

2. The right-angle acupuncture mechanism according to claim 1, characterized in that: The driving component includes a first bidirectional driving cylinder fixed on the top surface of the connecting plate and a second bidirectional driving cylinder fixed on the bottom surface of the connecting plate. The two ends of the first bidirectional driving cylinder are respectively connected to the first driving rod, and the two ends of the second bidirectional driving cylinder are respectively connected to the second driving rod. The end of the first driving rod away from the first bidirectional driving cylinder is connected to the adjusting component, and the end of the second driving rod away from the second bidirectional driving cylinder is connected to the adjusting component. The first bidirectional driving cylinder and the second bidirectional driving cylinder cooperate to drive the adjusting component to adjust the angle between the first right-angle cylinder and the second right-angle cylinder.

3. The right-angle acupuncture mechanism according to claim 2, characterized in that: The adjusting component includes a moving rod connected to the first driving rod, a second U-shaped plate connected to the second driving rod and with an opening facing away from the first driving rod, a first U-shaped plate located between the moving rod and the second U-shaped plate and with an opening facing the second U-shaped plate, and two movable plates located in the second U-shaped plate, the first U-shaped plate is fixedly connected to the second U-shaped plate, the movable plate is rotatably connected to the second U-shaped plate, the first right-angle cylinder and the second right-angle cylinder are respectively located between the two movable plates and fixedly connected to the movable plates, the bottom end of the moving rod is fixedly connected to a first pull rod that is parallel to the first driving rod and passes through the bottom plate of the first U-shaped plate, the end of the first pull rod away from the moving rod is hinged to the second pull rod, and the end of the second pull rod away from the first pull rod is rotatably connected to a pushing rod whose two ends in the length direction are respectively fixedly connected to the two movable plates; the second U-shaped plate slides on the right-angle slide in a direction parallel to the first driving rod.

4. The right-angle acupuncture mechanism according to claim 3, characterized in that: The outer surface of the side plate of the second U-shaped plate is provided with a sliding slot parallel to the first driving rod, and the inner surface of the right-angle slide plate is provided with a supporting rail matching the sliding slot.

5. An acupuncture device, comprising a base and a main frame fixed on the base, characterized in that: The main frame is provided with an upper needling mechanism for needling the upper surface of the preform, a side needling mechanism for needling the side of the preform, and a right-angle needling mechanism as described in any one of claims 1-4 for needling the right-angle part of the preform.

6. The acupuncture device according to claim 5, characterized in that The side needling mechanisms are symmetrically arranged on the main frame, and the right-angle needling mechanisms are symmetrically arranged on the main frame.

7. The acupuncture device according to claim 5, characterized in that The side needling mechanism comprises at least one horizontally arranged side cylinder, at least one side push rod and a side needle plate. The side cylinder is fixed on a side slide plate. The side slide plate approaches or moves away from the needling mold under the action of a horizontally arranged side adjustment cylinder fixed on a main frame.

8. The acupuncture device according to claim 5, characterized in that The needling equipment also includes a mobile platform that supports and drives the needling mold to move. The mobile platform includes a platform body. The bottom surface of the platform body is provided with a guide groove. The guide groove cooperates with a movable guide rail arranged on the base so that the platform body can move along the movable guide rail to adjust the needling position of the preform.

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