Fiber tow placement robot placement head structure

Abstract

The present invention discloses a laying head structure of a fiber tow laying robot, which relates to the technical field of automatic laying and forming of composite materials. It includes a tow channel, a tow guiding mechanism, a tow pressing mechanism, a tow refeeding mechanism, a tow cutting mechanism, a tow guide rail, a tow heating mechanism, and a tow pressing mechanism. The tow guiding mechanism is at the front end of the tow channel. The tow channel is divided into left and right parts. There is a tow pressing mechanism above the left part of the tow channel, and a tow cutting mechanism above the right part of the tow pressing mechanism. There is a tow refeeding mechanism in the middle of the two parts of the tow channel. The rear end of the tow channel is the tow guide rail. There is a tow heating mechanism below the tow guide rail, and a tow pressing mechanism is on the upper left side of the tow guide rail; the length of the tow channel is increased to protect the fiber tow and facilitate the cleaning of impurities and debris in the tow channel.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic placement and forming of composite materials, and particularly relates to a placement head structure of a fiber tow placement robot. Background Art

[0002] With the development of the aerospace, clean energy, modern transportation, and sporting goods industries, the demand for advanced composite materials with high strength, light weight, and strong corrosion resistance will further increase. However, due to the relatively late start of the research on composite material forming and manufacturing technology in China, the lack of advanced composite material forming and manufacturing technology has become one of the main reasons restricting the popularization of composite materials in China. At present, the large aircraft project in China has been implemented, and the planned composite material usage in the early stage is 15%. With the maturity and development of technology, the composite material usage will be further expanded. The fiber placement technology is the key to solving the manufacturing of aircraft composite parts. The research and development of the key technologies of the fiber tow automatic placement robot placement system are of great significance for improving the manufacturing level of high-performance composite material products in China and enhancing the comprehensive strength of China's aerospace and national defense industries. In the existing placement head structure of the fiber tow placement robot, it is not easy to clean the internal impurities and debris, and it is easy to cause poor placement effect after long-term use. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a placement head structure of a fiber tow placement robot with a simple structure and convenient cleaning of impurities and debris.

[0004] The technical solution of the present invention is: a laying head structure of a fiber tow laying robot, which includes a tow channel, a tow guiding mechanism, a tow pressing mechanism, a tow refeeding mechanism, a tow cutting mechanism, a tow guide rail, a tow heating mechanism, and a tow pressing mechanism; the tow guiding mechanism is at the front end of the tow channel; the tow channel is divided into left and right parts. There is a tow pressing mechanism above the left part of the tow channel, a tow cutting mechanism above the right part of the tow pressing mechanism, a tow refeeding mechanism in the middle of the two parts of the tow channel, and a tow guide rail at the rear end of the tow channel; there is a tow heating mechanism below the tow guide rail, and a tow pressing mechanism on the upper left side of the tow guide rail; the tow guiding mechanism includes a guiding wheel; the tow pressing mechanism includes a pressing cylinder and a pressing head, and the pressing cylinder drives the pressing head to move up and down; the tow refeeding mechanism includes a refeeding wheel, a refeeding motor, a refeeding pressure roller, and a pressure roller cylinder. The refeeding motor drives the refeeding wheel to rotate, the pressure roller cylinder controls the up and down movement of the refeeding pressure roller, and when the refeeding wheel engages with the refeeding pressure roller, it drives the tow to move to the right; the tow cutting mechanism includes a cutting cylinder and an upper blade, and the upper blade moves up and down under the drive of the cutting cylinder; the tow heating mechanism includes a blower, a heating wire, and an air outlet, and the low-frequency blower drives the hot air flow to blow towards the tow; the tow pressing mechanism includes a pressing cylinder and a pressing pressure roller, and the pressing cylinder controls the pressing pressure roller to apply force to the tow; the tow channel includes an upper plate and a lower plate. The upper plate is divided into four parts. There are strip-shaped grooves above the lower plate, a pressing fixed head corresponding to the pressing head on the left part of the lower plate, and a lower blade corresponding to the upper blade on the right part of the lower plate.

[0005] Preferably, the air outlet is arc-shaped.

[0006] Preferably, there are upper strip-shaped holes on the strip-shaped grooves, and lower through holes at the bottom of the lower plate corresponding to the upper strip-shaped holes.

[0007] Preferably, there are baffles inside the lower plate corresponding to the strip-shaped grooves, and the baffles are connected by iron wires.

[0008] Preferably, sliding grooves are provided on the front sides of the left and right parts of the lower plate, and sliders fixedly connected to the baffles are arranged in the sliding grooves.

[0009] The beneficial effects of the present invention are: by lengthening the length of the tow channel, it can protect the fiber tow and effectively solve the problem of the influence of impurities in the environment on the tow during laying; by providing a lower plate that is convenient for cleaning the debris in the tow channel, it effectively solves the problem that the accumulation of impurity debris during long-term operation of the laying head affects the laying effect. Description of the Drawings

[0010] Figure 1 It is a schematic structural diagram of a laying head structure of a fiber tow laying robot.

[0011] Figure 2It is a structural schematic diagram of the lower layer plate of the fiber tow channel of a fiber tow placement robot placement head structure.

[0012] Reference numerals: 1 - fiber tow channel; 2 - fiber tow guiding mechanism; 3 - fiber tow pressing mechanism; 4 - fiber tow refeeding mechanism; 5 - fiber tow cutting mechanism; 6 - fiber tow guide rail; 7 - fiber tow heating mechanism; 8 - fiber tow pressing mechanism; 11 - upper layer plate; 12 - lower layer plate; 21 - guide wheel; 31 - pressing cylinder; 32 - pressing head; 41 - refeeding wheel; 42 - refeeding motor; 43 - refeeding pressure roller; 44 - pressure roller cylinder; 51 - cutting cylinder; 52 - upper blade; 71 - fan; 72 - heating wire; 73 - air outlet; 81 - pressing cylinder; 82 - pressing pressure roller; 121 - strip-shaped groove; 122 - upper layer strip-shaped hole; 123 - pressing fixed head; 124 - lower blade; 125 - baffle; 126 - sliding groove; 127 - slider; 128 - lower layer through hole. Detailed implementation manners

[0013] The technical solutions of the present invention will be further explained below in conjunction with the accompanying drawings:

[0014] According to Figures 1 to 2As shown, a fiber tow placement robot placement head structure includes a tow channel 1, a tow guiding mechanism 2, a tow pressing mechanism 3, a tow re-feeding mechanism 4, a tow cutting mechanism 5, a tow guide rail 6, a tow heating mechanism 7, and a tow pressing mechanism 8; the tow guiding mechanism 2 is at the front end of the tow channel 1; the tow channel 1 is divided into two parts, a tow pressing mechanism 3 is provided above the left part of the tow channel 1, a tow cutting mechanism 5 is provided above the right part of the tow pressing mechanism 3, a tow re-feeding mechanism 4 is provided between the two parts of the tow channel 1, and a tow guide rail 6 is provided at the rear end of the tow channel 1; a tow heating mechanism 7 is provided below the tow guide rail 6, and a tow pressing mechanism 8 is provided on the upper left side of the tow guide rail 6; the tow guiding mechanism 2 includes a guide wheel 2 1; the tow pressing mechanism 3 includes a pressing cylinder 31 and a pressing head 32, the pressing cylinder 31 drives the pressing head 32 to move up and down; the tow re-feeding mechanism 4 includes a re-feeding wheel 41, a re-feeding motor 42, a re-feeding roller 43, and a roller cylinder 44, the re-feeding motor 42 drives the re-feeding wheel 41 to rotate, the roller cylinder 44 controls the re-feeding roller 43 to move up and down, and the re-feeding wheel 41 drives the tow to move rightward when it is engaged with the re-feeding roller 43; the tow cutting mechanism 5 includes a cutting cylinder 51 and an upper blade 52, the upper blade 52 moves up and down driven by the cutting cylinder 51; the tow heating mechanism 7 includes a fan 71, a heating wire 72, and an air outlet 73, the low-frequency fan 71 drives the hot air flow from the arc-shaped air outlet 73 to the tow; the The tow pressure mechanism 8 includes a pressure cylinder 81 and a pressure roller 82, and the pressure cylinder 81 controls the pressure roller 82 to apply force to the tow; the tow channel 1 includes an upper plate 11 and a lower plate 12, the upper plate 11 is divided into four parts, and a strip groove 121 is provided above the lower plate 12, and the strip groove 121 is convenient for storing impurities and debris, and there are upper strip holes 122 on the strip groove 121, and the upper strip holes 122 are used for the falling of impurities and debris, and a lower through hole 128 corresponding to the upper strip hole 122 is provided at the bottom of the lower plate 12, and a pressing and fixing head 123 is provided at the left part of the lower plate 12 corresponding to the pressing head 32, and the pressing and fixing head 123 is used to cooperate with the pressing head 32 to press and fix the tow, and the right part of the lower plate 12 corresponds to the upper blade There is a lower blade 124 at 52, and the lower blade 124 cooperates with the upper blade 52 to cut the wire bundle. There is a baffle 125 at the corresponding strip groove 121 in the lower plate 12, and the baffles 125 are connected by wires. The baffle 125 is used to block between the upper strip hole 122 and the lower through hole 128, so as to facilitate cleaning of impurities and debris above the upper strip hole 122. A slide groove 126 is provided on the front side of the left and right parts of the lower plate 12, and a slider 127 fixedly connected to the baffle 125 is provided in the slide groove 126. By toggling the slider 127, the slider 127 moves in the slide groove 126, and the slider 127 drives the baffle 125 to move in the lower plate 12, and the impurities and debris fall from the upper strip hole 122 and are discharged from the lower through hole 128.

[0015] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Those of ordinary skill in the art should understand that any modification or equivalent replacement of the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention shall be covered by the scope of the claims of the present invention.

Claims

1. A laying head structure of a fiber tow placement robot, comprising a tow channel, a tow guiding mechanism, a tow pressing mechanism, a tow refeeding mechanism, a tow cutting mechanism, a tow guide rail, a tow heating mechanism, and a tow pressing mechanism, characterized in that: The tow guiding mechanism is at the front end of the tow channel; the tow channel is divided into left and right parts. There is a tow pressing mechanism above the left part of the tow channel, a tow cutting mechanism above the right part of the tow pressing mechanism, a tow refeeding mechanism in the middle of the two parts of the tow channel, and a tow guide rail at the rear end of the tow channel; there is a tow heating mechanism below the tow guide rail, and a tow pressing mechanism on the upper left side of the tow guide rail; the tow guiding mechanism includes a guide wheel; the tow pressing mechanism includes a pressing cylinder and a pressing head, and the pressing cylinder drives the pressing head to move up and down; the tow refeeding mechanism includes a refeeding wheel, a refeeding motor, a refeeding pressure roller, and a pressure roller cylinder. The refeeding motor drives the refeeding wheel to rotate, the pressure roller cylinder controls the up and down movement of the refeeding pressure roller, and when the refeeding wheel and the refeeding pressure roller engage, they drive the tow to move to the right; the tow cutting mechanism includes a cutting cylinder and an upper blade, and the upper blade moves up and down driven by the cutting cylinder; the tow heating mechanism includes a blower, a heating wire, and an air outlet, and the low-frequency blower drives the hot air flow to blow towards the tow; the tow pressing mechanism includes a pressing cylinder and a pressing pressure roller, and the pressing cylinder controls the pressing pressure roller to apply force to the tow; the tow channel includes an upper plate and a lower plate. The upper plate is divided into four parts. There are strip-shaped grooves above the lower plate. There are pressing fixed heads corresponding to the pressing heads on the left part of the lower plate, and lower blades corresponding to the upper blades on the right part of the lower plate; there are upper strip-shaped holes on the strip-shaped grooves, and there are lower through holes at the bottom of the lower plate corresponding to the upper strip-shaped holes; there are baffles inside the lower plate corresponding to the strip-shaped grooves, and the baffles are connected by iron wires; there are chutes on the front surfaces of the left and right parts of the lower plate, and there are sliders fixedly connected to the baffles in the chutes.

2. The fiber tow placement robot placement head structure according to claim 1, characterized in that: The air outlet described above is arc-shaped.

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