CN112794128B

CN112794128B - Large-width material belt laying head

Info

Publication number: CN112794128B
Application number: CN202110381053.2A
Authority: CN
Inventors: 谈源; 刘林明; 刘宇成
Original assignee: Changzhou Xinchuang Intelligent Technology Co Ltd
Current assignee: Changzhou Xinchuang Intelligent Technology Co Ltd
Priority date: 2021-04-09
Filing date: 2021-04-09
Publication date: 2021-07-06
Anticipated expiration: 2041-04-09
Also published as: CN112794128A

Abstract

The invention relates to the technical field of textile machinery and composite material forming, in particular to a large-width material belt laying head. The material belt passes through the first tension adjusting assembly and the second tension adjusting assembly after passing through the traction assembly, the tension value of the material belt is compensated and finely adjusted respectively, and finally the material belt is paved on the surface of the vehicle body through the paving assembly. The winding assembly is used for winding the PE film between the two layers of material belts. The tiling subassembly passes through first cylinder drive gasbag and spreads the material area and paste on the automobile body surface, compresses tightly the large width material area through the gasbag that sets up and spreads and paste on the automobile body surface.

Description

Large-width material belt laying head

Technical Field

The invention relates to the technical field of carbon fiber composite material preforming equipment, in particular to a large-width material belt laying head.

Background

With the application and development of the composite material in the field of rail vehicles, the design and manufacturing technology of the composite material vehicle body is fully integrated, so that the composite material is more and more widely applied to large vehicle bodies. The high-strength low-density composite material has a series of advantages of high specific strength, high specific modulus, good fatigue resistance, corrosion resistance and the like, and can realize light weight and low cost of manufacturing a composite material vehicle body.

At present, the composite material component is produced mainly by four laying manufacturing technologies of semi-automatic manual laying, automatic fiber winding, automatic tape material layer laying and automatic fiber laying. In order to realize the industrial production and manufacture of the large-scale composite material vehicle body, vehicle body laying equipment and rotary equipment are required to be linked, and the prepreg laying on the surface of the vehicle body is realized. Aiming at laying a prepreg tape with the preferred material width of 500mm on the composite material on the outer surface of a large vehicle body, the tape laying head in vehicle body laying equipment needs to realize the unreeling, tension control, heating and paving of the prepreg tape, and the selection of the prepreg tape with large width can influence the precision of the tape laying head on the tension and speed control of the prepreg tape.

In view of the above problems, the designer actively makes research and innovation based on the practical experience and professional knowledge of the product engineering application for many years, so as to create a large-amplitude wide-band tape laying head, which is more practical.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the large-width belt laying head is capable of accurately controlling the tension value of the prepreg.

In order to achieve the purpose, the invention adopts the technical scheme that: a large format wide web taping head comprising: the device comprises a support plate, a laying unit and a power unit, wherein the support plate is arranged in the vertical direction, the laying unit and the power unit are respectively fixed on two sides of the support plate, the laying unit comprises an unwinding component, a drawing component, a first tension adjusting component, a winding component, a second tension adjusting component and a laying component, and the power unit comprises a magnetic powder brake, a first motor and a second motor and respectively provides power for the unwinding component, the drawing component and the winding component;

the unwinding assembly comprises a first air expansion shaft, the winding assembly comprises a second air expansion shaft, the first air expansion shaft and the second air expansion shaft are respectively used for unwinding a material belt and winding a PE (polyethylene) film, and the spreading assembly comprises a first air cylinder and an air bag arranged at the end part of an output shaft of the first air cylinder;

the traction assembly comprises a driving roller and a driven roller, and the driving roller and the driven roller are respectively pressed close to two sides of the material belt;

the first tension adjusting assembly comprises a first tension roller and a transmission assembly, the second tension adjusting assembly comprises a second tension roller and a second cylinder, the first tension roller is matched with the transmission assembly to compensate the tension value when the tension value of the material belt is insufficient, and the second cylinder drives the second tension roller to adjust the tension value of the material belt.

Furthermore, a first guide roller and a second guide roller are arranged between the first tension roller and the second tension roller, a material belt is led out from the unreeling assembly and then sequentially passes through the drawing assembly, the first tension adjusting assembly, the first guide roller, the second guide roller and the second tension adjusting assembly, and paving and pasting are completed through the paving assembly.

Further, the driving roller, the first tension roller, the first guide roller and the second guide roller are arranged on two sides of the material belt in a staggered mode along the conveying direction of the material belt and are arranged between the first air expansion shaft and the second tension roller along the vertical direction;

the second air expansion shaft and the first guide roller are arranged on the same side of the material belt, and the second guide roller, the second tension roller and the air bag are arranged in a triangular shape and are arranged on the same side of the material belt.

Furthermore, the second tension adjusting assembly is also provided with a swing arm, one end of the swing arm and the end part of the output shaft of the second cylinder are both connected with the second tension roller, and the swing arm and one end of the second cylinder, which is far away from the second tension roller, are both rotatably connected with the supporting plate;

the second cylinder sets up in the slope, just the output shaft of second cylinder can drive the second tension roller removes towards the direction of paving in material area.

Furthermore, the swing arm is bent, the bending angle of the swing arm is set to be between 100 degrees and 150 degrees, and the bending angle of the swing arm faces to the second cylinder.

Further, the transmission assembly comprises a balance arm, a tension spring, a connecting seat and a mounting plate, the balance arm and the mounting plate are rotatably connected with the supporting plate, the first tension roller is arranged at one end, close to the material belt, of the balance arm, the other end of the balance arm is connected with the connecting seat through the tension spring, and the connecting seat is rotatably connected with the mounting plate.

Further, the balance arm is bent and is arranged into a first part and a second part, and an included angle between the first part and the second part is set to be 100-150 degrees;

the joint of the first part and the second part is rotatably connected with the support plate.

Furthermore, a waist-shaped hole is formed in the mounting plate, and the mounting plate is pressed and fixed on the supporting plate through a bolt arranged in the waist-shaped hole.

Furthermore, a third guide roller is arranged between the unreeling assembly and the drawing assembly, and a fourth guide roller is arranged between the reeling assembly and the first guide roller.

Further, still be provided with the heater in the backup pad, the heater is close to the setting of second tension roller, just the heating surface of heater sets up towards the material area.

The invention has the beneficial effects that: the material tray is fixed on a first air expansion shaft, the material belt provides unwinding power through a traction assembly after being led out of the material tray, the first air expansion shaft provides resistance through a magnetic powder brake, passive unwinding of the material tray is achieved, the rotating speed of a driving roller can be adjusted through a first motor, and the tension and the unwinding speed of the material belt are accurately controlled in cooperation with a driven roller;

the connecting seat and the balance arm are rotatably connected with the mounting plate and are connected with each other through a tension spring, and the tension spring in a stretching state pulls one end of the balance arm to enable the first tension roller at the other end of the balance arm to push the material belt, so that the tension value of the material belt is compensated;

the balance arm is set to be bent, and when the first tension roller is used for supplementing the tension value of the material belt, the first tension roller moves along an arc line to gently push the material belt, so that the supplementing process of the first tension roller to the material belt is more stable and accurate.

Drawings

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

FIG. 1 is a schematic structural diagram of a large-width material belt laying head in the embodiment of the invention;

FIG. 2 is a schematic structural diagram of a tape laying head laying unit in the embodiment of the invention;

FIG. 3 is a schematic structural diagram of a power unit of a tape laying head in the embodiment of the invention;

FIG. 4 is a schematic cross-sectional structure diagram of a placement unit in an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a first tension adjusting assembly when the tension of the material tape is sufficient according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a first tension adjusting assembly when tension of a material strap is insufficient according to an embodiment of the present invention;

fig. 7 is a schematic diagram illustrating the movement of the first tension adjusting assembly in the process of compensating the tension of the material strap according to the embodiment of the present invention;

FIG. 8 is a schematic force diagram of the second tension roller according to the embodiment of the present invention.

Reference numerals: 1. a support plate; 2. an unwinding assembly; 21. a first inflatable shaft; 22. a third guide roller; 3. a pulling assembly; 31. a drive roll; 32. a driven roller; 4. a first tension adjustment assembly; 41. a first tension roller; 42. a transmission assembly; 421. a balance arm; 422. a tension spring; 423. a connecting seat; 424. mounting a plate; 425. a kidney-shaped hole; 43. a first guide roller; 44. a second guide roller; 5. a winding component; 51. a second inflatable shaft; 52. a fourth guide roller; 6. a second tension adjustment assembly; 61. a second tension roller; 62. a second cylinder; 63. swinging arms; 7. a tiling component; 71. a first cylinder; 72. an air bag; 73. a heater; 81. a magnetic powder brake; 82. a first motor; 83. a second motor.

Detailed Description

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

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

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

The large-width material belt laying head shown in fig. 1 to 8 comprises a support plate 1 arranged in the vertical direction, and a laying unit and a power unit which are respectively fixed on two sides of the support plate 1, wherein the laying unit comprises an unwinding component 2, a drawing component 3, a first tension adjusting component 4, a winding component 5, a second tension adjusting component 6 and a laying component 7, the power unit comprises a magnetic powder brake 81, a first motor 82 and a second motor 83 and respectively provides power for the unwinding component 2, the drawing component 3 and the winding component 5; the unwinding assembly 2 comprises a first air expansion shaft 21, the winding assembly 5 comprises a second air expansion shaft 51, the first air expansion shaft 21 and the second air expansion shaft 51 are respectively used for unwinding a material belt and winding a PE (polyethylene) film, and the tiling assembly 7 comprises a first air cylinder 71 and an air bag 72 arranged at the end part of an output shaft of the first air cylinder 71; the drawing assembly 3 comprises a driving roller 31 and a driven roller 32, wherein the driving roller 31 and the driven roller 32 are respectively pressed close to two sides of the material belt; the first tension adjusting assembly 4 comprises a first tension roller 41 and a transmission assembly 42, the second tension adjusting assembly 6 comprises a second tension roller 61 and a second air cylinder 62, the first tension roller 41 is matched with the transmission assembly 42 to compensate the tension value when the tension value of the material belt is insufficient, and the second air cylinder 62 drives the second tension roller 61 to adjust the tension value of the material belt.

The belt laying head of the belt laying machine is used for unreeling and laying a large-width prepreg belt, and particularly comprises a first guide roller 43 and a second guide roller 44 which are arranged between a first tension roller 41 and a second tension roller 61, the prepreg belt is led out from an unreeling component 2 and then sequentially passes through a drawing component 3, a first tension adjusting component 4, the first guide roller 43, the second guide roller 44 and a second tension adjusting component 6, and the laying is finished through a laying component 7.

In the specific implementation process, the charging tray is fixedly mounted on the first air expansion shaft 21, the material belt provides unwinding power through the traction assembly 3 after being guided out of the charging tray, the first air expansion shaft 21 is fixedly connected with the magnetic powder brake 81, resistance is provided by the magnetic powder brake 81, passive unwinding of the charging tray is achieved, the rotating speed of the driving roller 31 can be adjusted through the first motor 82, and the tension and the unwinding speed of the material belt are accurately controlled in cooperation with the driven roller 32.

Furthermore, the material belt passes through the first tension adjusting assembly 4 and the second tension adjusting assembly 6 after passing through the traction assembly 3, the tension value of the material belt is compensated and finely adjusted respectively, and finally the material belt is paved on the surface of the vehicle body through the paving assembly 7. The winding component 5 is used for winding the PE film between the two layers of material belts. The tiling subassembly 7 passes through first cylinder 71 drive gasbag 72 and lays the material area on the automobile body surface, compress tightly the large width material area through the gasbag 72 that sets up and lay on the automobile body surface, and is concrete, still be provided with the square blanket below gasbag 72, compress tightly the in-process of laying to prepreg, can drag the square blanket simultaneously, the friction of square blanket and prepreg tape's top layer, consequently only roll the PE membrane in rolling subassembly 5, the release paper on prepreg tape top layer does not tear temporarily, the laying of the prepreg tape of being convenient for and can protect prepreg.

As a preference of the above embodiment, the driving roller 31, the first tension roller 41, the first guide roller 43 and the second guide roller 44 are alternately arranged on both sides of the material tape along the conveying direction of the material tape, and are arranged between the first air-expansion shaft 21 and the second tension roller 61 along the vertical direction; the second air expansion shaft 51 and the first guide roller 43 are arranged on the same side of the material belt, and the second guide roller 44, the second tension roller 61 and the air bag 72 are arranged in a triangular shape and are all arranged on the same side of the material belt.

Specifically, the prepreg tape on the charging tray is of a three-layer sandwich structure, the prepreg is clamped in the middle through the PE film and release paper, and the PE film is used for separating two adjacent layers of the prepreg tape in the charging tray. In the unwinding and laying process of the prepreg tape, as shown in fig. 4, the prepreg tape is led out from the upper side of the material tray and sequentially passes through the driving roller 31, the first tension roller 41, the first guide roller 43 and the second guide roller 44, at this time, one side of the prepreg tape provided with the PE film always faces the upper side of the tape laying head, and the winding assembly 5 is arranged above the first guide roller 43, so that the PE film can be wound conveniently. After the material belt passes through the second guide roller 44, one surface of the material belt which is rolled with the PE film is converted to the position facing the lower part of the belt laying head, so that the prepreg layer in the material belt is conveniently laid and adhered to the surface of the vehicle body.

The second tension adjusting assembly 6 adjusts the tension value of the material belt, the second guide roller 44, the second tension roller 61 and the air bag 72 are arranged in a triangular structure, the second air cylinder 62 drives the second tension roller 61 to push and press one side of the material belt, which is provided with release paper, so that the tension of the material belt is changed.

Specifically, the second tension adjusting assembly 6 is further provided with a swing arm 63, one end of the swing arm 63 and the end of the output shaft of the second cylinder 62 are both connected with the second tension roller 61, and the ends of the swing arm 63 and the second cylinder 62 far away from the second tension roller 61 are both rotatably connected with the support plate 1; the second cylinder 62 is disposed obliquely, and an output shaft of the second cylinder 62 can drive the second tension roller 61 to move toward the laying direction of the tape. The swing arm 63 is bent, the bending angle of the swing arm 63 is set between 100 degrees and 150 degrees, and the bending angle of the swing arm 63 is set toward the second cylinder 62.

In the above embodiment, the second air cylinder 62 is disposed obliquely, the direction in which the second air cylinder 62 is disposed is the same as the direction of the resultant force exerted on the second tension roller 61 by the tape passing through the front and rear portions of the second tension roller 61, as shown in fig. 8, the direction of the resultant force of the prepreg component force one and the prepreg component force two acting on the second tension roller 61 coincides with the stretching direction of the output shaft of the second air cylinder 62, and the tension of the tape can be precisely controlled by driving the second tension roller 61 by the second air cylinder 62.

As a preference of the above embodiment, a first tension adjusting assembly 4 is further disposed between the pulling assembly 3 and the first guiding roller 43, and the driving assembly 42 is matched with the first tension roller 41 to perform passive compensation on the tension value of the material belt when the tension value of the material belt is insufficient.

Specifically, transmission assembly 42 includes balance arm 421, tension spring 422, connecting seat 423 and mounting panel 424, and balance arm 421 and mounting panel 424 all rotate with backup pad 1 to be connected, and first tension roller 41 sets up the one end that is close to the material area at balance arm 421, and the other end of balance arm 421 passes through tension spring 422 and links to each other with connecting seat 423, and connecting seat 423 rotates with mounting panel 424 to be connected. The balance arm 421 is bent and is provided with a first part and a second part, and an included angle between the first part and the second part is set to be 100-150 degrees; the joint of the first part and the second part is rotatably connected with the support plate 1. A kidney-shaped hole 425 is formed in the mounting plate 424, and the mounting plate 424 is fixed to the support plate 1 by being pressed by a bolt provided in the kidney-shaped hole 425.

In the specific implementation process, as shown in fig. 5, the mounting plate 424 is rotatably connected to the support plate 1 through a pin, the fixing angle of the mounting plate 424 is adjusted through a kidney-shaped hole 425 formed in the mounting plate, and the mounting plate 424 is pressed and fixed on the support plate 1 through a bolt arranged in the kidney-shaped hole 425. The connecting base 423 and the balance arm 421 are both rotatably connected to the mounting plate 424 and connected to each other through the tension spring 422, specifically, the tension spring 422 is in an initial state, the connecting base 423 and the balance arm 421 are drawn together, so that the first tension roller 41 at the other end of the balance arm 421 has a certain thrust in the direction toward the material tape, and the first tension roller 41 is pressed on the material tape all the time, when the tension value of the material tape is insufficient, as shown in fig. 7, the tension spring 422 in the tension state pulls one end of the balance arm 421, so that the first tension roller 41 at the other end of the balance arm 421 pushes the material tape, and the tension value of the material tape is supplemented. The balance arm 421 is bent to form a lever structure for driving and controlling the balance arm 421 via the tension spring 422. The middle part of the balance arm 421 is rotatably connected with the supporting plate 1, so that the first tension roller 41 arranged at one end of the balance arm 421 moves along an arc, and when the first tension roller 41 supplements the tension value of the material belt, the first tension roller moves along the arc to gently push the material belt, so that the supplementing process of the first tension roller 41 to the material belt is more stable and accurate.

As a preferred embodiment of the present application, a third guide roller 22 is disposed between the unwinding assembly 2 and the drawing assembly 3, and a fourth guide roller 52 is disposed between the winding assembly 5 and the first guide roller 43. The cloth is convenient to unreel and the PE film is convenient to roll. The support plate 1 is further provided with a heater 73, the heater 73 is disposed close to the second tension roller 61, and a heating surface of the heater 73 is disposed toward the tape. The prepreg can be more conveniently paved and attached after being heated.

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

Claims

1. A large-width material belt laying head is characterized by comprising: the device comprises a supporting plate (1) arranged along the vertical direction, and a laying unit and a power unit which are respectively fixed on two sides of the supporting plate (1), wherein the laying unit comprises an unreeling component (2), a drawing component (3), a first tension adjusting component (4), a reeling component (5), a second tension adjusting component (6) and a flatly laying component (7), and the power unit comprises a magnetic powder brake (81), a first motor (82) and a second motor (83) and respectively provides power for the unreeling component (2), the drawing component (3) and the reeling component (5);

the unwinding assembly (2) comprises a first air expansion shaft (21), the winding assembly (5) comprises a second air expansion shaft (51), the first air expansion shaft (21) and the second air expansion shaft (51) are used for unwinding a material belt and winding a PE (polyethylene) film respectively, and the spreading assembly (7) comprises a first air cylinder (71) and an air bag (72) arranged at the end part of an output shaft of the first air cylinder (71);

the drawing assembly (3) comprises a driving roller (31) and a driven roller (32), and the driving roller (31) and the driven roller (32) are respectively pressed close to two sides of the material belt;

the first tension adjusting assembly (4) comprises a first tension roller (41) and a transmission assembly (42), the second tension adjusting assembly (6) comprises a second tension roller (61) and a second air cylinder (62), the first tension roller (41) is matched with the transmission assembly (42) to compensate the tension value when the tension value of the material belt is insufficient, and the second air cylinder (62) drives the second tension roller (61) to adjust the tension value of the material belt;

a first guide roller (43) and a second guide roller (44) are arranged between the first tension roller (41) and the second tension roller (61), a material belt is led out from the unreeling assembly (2), then sequentially passes through the drawing assembly (3), the first tension adjusting assembly (4), the first guide roller (43), the second guide roller (44) and the second tension adjusting assembly (6), and is paved through the paving assembly (7);

the driving roller (31), the first tension roller (41), the first guide roller (43) and the second guide roller (44) are arranged on two sides of the material belt in a staggered mode along the conveying direction of the material belt and are arranged between the first air expansion shaft (21) and the second tension roller (61) along the vertical direction;

the second air expansion shaft (51) and the first guide roller (43) are arranged on the same side of the material belt, and the second guide roller (44), the second tension roller (61) and the air bag (72) are arranged in a triangular shape and are arranged on the same side of the material belt;

the transmission assembly (42) comprises a balance arm (421), a tension spring (422), a connecting seat (423) and a mounting plate (424), the balance arm (421) and the mounting plate (424) are rotatably connected with the supporting plate (1), the first tension roller (41) is arranged at one end, close to a material belt, of the balance arm (421), the other end of the balance arm (421) is connected with the connecting seat (423) through the tension spring (422), and the connecting seat (423) is rotatably connected with the mounting plate (424);

waist type hole (425) have been seted up on mounting panel (424), will through setting up bolt in waist type hole (425) mounting panel (424) compress tightly to be fixed on backup pad (1), mounting panel (424) are connected through round pin axle and backup pad (1) rotation, adjust the fixed angle of mounting panel (424) through waist type hole (425) of seting up on it.

2. The large-width material belt laying head according to claim 1, wherein the second tension adjusting assembly (6) is further provided with a swing arm (63), one end of the swing arm (63) and the end part of the output shaft of the second air cylinder (62) are both connected with the second tension roller (61), and one ends of the swing arm (63) and the second air cylinder (62) far away from the second tension roller (61) are both rotatably connected with the support plate (1);

the second air cylinder (62) is obliquely arranged, and an output shaft of the second air cylinder (62) can drive the second tension roller (61) to move towards the paving direction of the material belt.

3. Broad width strip laying head according to claim 2, wherein the swing arm (63) is arranged in a bent shape, the bending angle of the swing arm (63) is arranged between 100 ° and 150 °, and the bending angle of the swing arm (63) is arranged towards the second cylinder (62).

4. The large format wide web taping head according to claim 1, wherein the balancing arm (421) is bent and arranged in a first portion and a second portion, the angle between the first portion and the second portion being arranged between 100 ° and 150 °;

the intersection of the first part and the second part is rotatably connected with the support plate (1).

5. The large format wide web taping head according to claim 1, characterised in that a third guide roller (22) is arranged between the unwinding assembly (2) and the pulling assembly (3), and a fourth guide roller (52) is arranged between the winding assembly (5) and the first guide roller (43).

6. The large-width material belt laying head as claimed in claim 1, characterized in that a heater (73) is further provided on the support plate (1), the heater (73) is provided close to the second tension roller (61), and a heating surface of the heater (73) is provided toward the material belt.