Belt cutting mechanism and automatic laying equipment

Abstract

The utility model relates to the technical field of automatic laying of composite materials, in particular to a belt cutting mechanism and automatic laying equipment. The belt cutting mechanism comprises a cutting board wheel, a knife roller wheel and a cutter. The axis of the knife roller is parallel to the axis of the cutting board wheel, the knife roller is provided with a first position and a second position relative to the cutting board wheel, the first position is that the knife roller and the cutting board wheel are arranged at an interval, the second position is that the peripheral wall of the knife roller abuts against the peripheral wall of the cutting board wheel, and the knife roller and the cutting board wheel can rotate relative to each other; and the cutter is arranged on the peripheral wall of the cutter roller. The belt cutting mechanism is simple in structure, the belt cutting process does not affect the laying movement process, the laying process is not stopped, then key process parameters such as the movement speed, the temperature and the pressure of a laying area are not affected by belt cutting and fluctuate, and the performance consistency of products is good. The utility model further provides automatic laying equipment which comprises a fiber laying head and the belt cutting mechanism, and the automatic laying equipment improves the product quality through the arrangement of the belt cutting mechanism.

Description

Technical Field

[0001] This utility model relates to the field of automatic composite material laying technology, and in particular to a tape cutting mechanism and automatic laying equipment. Background Technology

[0002] A crucial step in molding resin-based composite materials is the automated layup of prepreg tape to form preforms. For thermoplastic composites, in-situ consolidation may also be achieved during automated layup under the influence of heat sources such as lasers, infrared lamps, or heat guns. Therefore, automated layup is a critical process, and its quality significantly impacts product performance. Tape cutting is an essential step in automated layup. Currently, mainstream equipment pauses layup during tape cutting to ensure proper operation, resuming only after the prepreg tape is cut. This leads to fluctuations in pressure and temperature in the layup area during the pause, resulting in unstable performance parameters and affecting product quality consistency. Therefore, a tape cutting mechanism is needed to address these issues. Utility Model Content

[0003] The purpose of this invention is to provide a tape cutting mechanism that enables tape cutting without interruption during the automatic laying of composite materials, thereby improving the consistency of product performance.

[0004] Another objective of this invention is to provide an automatic laying device that improves product quality by incorporating the aforementioned tape-cutting mechanism.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A tape cutting mechanism for an automated laying device, the tape cutting mechanism comprising:

[0007] Cutting board wheel;

[0008] The blade roller has its axis parallel to that of the anvil wheel. The blade roller has a first position and a second position relative to the anvil wheel. The first position is in which the blade roller and the anvil wheel are spaced apart. The second position is in which the peripheral wall of the blade roller abuts against the peripheral wall of the anvil wheel. The blade roller and the anvil wheel are able to rotate relative to each other.

[0009] The cutter is disposed on the peripheral wall of the cutter roller.

[0010] As an optional technical solution, the cutting mechanism further includes a drive component for driving the cutter roller to switch between the first position and the second position.

[0011] As an optional technical solution, the cutting mechanism further includes a first connecting shaft, on which the cutter roller is rotatably mounted;

[0012] The drive assembly includes a drive component and a transmission component. One end of the transmission component is connected to the output end of the drive component, and the other end of the transmission component is connected to the first connecting shaft.

[0013] As an optional technical solution, the automatic laying device includes a yarn laying head, and the cutting mechanism further includes a limiting member. The two ends of the limiting member are movably disposed on the yarn laying head, and the limiting member is fixedly connected to the transmission member. The limiting member is used to limit the cutter roller to the second position.

[0014] As an optional technical solution, the driving component is a cylinder, and the transmission component is a connecting rod.

[0015] As an optional technical solution, multiple cutters are provided, and the multiple cutters are evenly arranged along the circumference of the cutter roller.

[0016] As an optional technical solution, the cross-sectional shapes of the blades of the multiple cutters are all different.

[0017] As an optional technical solution, the cutting blade has a beveled edge.

[0018] As an optional technical solution, the anvil wheel includes a rubber component or a felt component.

[0019] This utility model also adopts the following technical solution:

[0020] An automatic placement device includes a filament placement head and a cutting mechanism as described in any of the above embodiments. The cutting mechanism includes a second connecting shaft, and the anvil wheel is rotatably mounted on the second connecting shaft, which is connected to the filament placement head.

[0021] The beneficial effects of this utility model are:

[0022] This invention provides a tape cutting mechanism, including an anvil wheel, a cutter roller, and a cutter. The axis of the cutter roller is parallel to the axis of the anvil wheel. The cutter roller has a first position and a second position relative to the anvil wheel. In the first position, the cutter roller and the anvil wheel are spaced apart. In the second position, the peripheral wall of the cutter roller is pressed against the peripheral wall of the anvil wheel, and the cutter roller and the anvil wheel can rotate relative to each other. The cutter is disposed on the peripheral wall of the cutter roller. When a cutting command is triggered, the cutter roller switches from the first position to the second position, and the peripheral wall of the cutter roller presses against the peripheral wall of the anvil wheel, compressing the laid prepreg tape. The prepreg tape continuously advances between the cutter roller and the anvil wheel. Under the action of friction, the prepreg tape pulls the cutter roller and the anvil wheel to rotate. The rotation of the cutter roller drives the cutter to rotate, and the blade of the cutter passes through the prepreg tape and sinks into the anvil wheel, thereby cutting the prepreg tape. The tape cutting mechanism has a simple structure, and the tape cutting process does not affect the laying process. The laying process is uninterrupted, so the key process parameters such as the movement speed, temperature, and pressure in the laying area are not affected by the tape cutting and fluctuate, resulting in good product performance consistency.

[0023] This utility model also provides an automatic laying device, including a yarn laying head and the aforementioned cutting mechanism. By setting up the cutting mechanism, the automatic laying device improves the quality of the product. Attached Figure Description

[0024] Figure 1 This is a partial structural schematic diagram of the slicing mechanism provided in an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the slicing mechanism provided in an embodiment of the present invention.

[0026] In the picture:

[0027] 1. Anvil wheel; 2. Knife roller wheel; 3. Cutter; 4. First connecting shaft; 51. Driving component; 52. Transmission component; 6. Limiting component; 7. Second connecting shaft;

[0028] 10. Prepreg tape. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] The following is combined Figure 1 and Figure 2 The technical solution of this utility model will be further illustrated through specific embodiments.

[0037] A crucial step in composite material molding is the automatic laying of prepreg tape 10 to form a preform. To achieve seamless tape cutting, eliminate the impact of the tape cutting logic on the automatic laying speed, and improve product stability and performance consistency, this invention provides a tape cutting mechanism, comprising an anvil wheel 1, a cutter roller 2, and a cutter 3. The axis of the cutter roller 2 is parallel to the axis of the anvil wheel 1. The cutter roller 2 has a first position and a second position relative to the anvil wheel 1. The first position is where the cutter roller 2 and the anvil wheel 1 are spaced apart; the second position is where the peripheral wall of the cutter roller 2 abuts against the peripheral wall of the anvil wheel 1, and the cutter roller 2 and the anvil wheel 1 can rotate relative to each other. The cutter 3 is disposed on the peripheral wall of the cutter roller 2.

[0038] In detail, during the laying process of the prepreg tape 10, the cutter roller 2 is in the first position, that is, there is a gap between the cutter roller 2 and the anvil roller 1. The prepreg tape 10 passes through the gap between the cutter roller 2 and the anvil roller 1 and moves between the cutter roller 2 and the anvil roller 1. When the cutting command is triggered, the cutter roller 2 switches from the first position to the second position. The peripheral wall of the cutter roller 2 abuts against the peripheral wall of the anvil roller 1 and presses the laid prepreg tape 10. The prepreg tape 10 continuously advances between the cutter roller 2 and the anvil roller 1. Under the action of friction, the prepreg tape 10 pulls the cutter roller 2 and the anvil roller 1 to rotate. The rotation of the cutter roller 2 drives the cutter 3 to rotate. The blade of the cutter 3 passes through the prepreg tape 10 and sinks into the anvil roller 1, thereby cutting the prepreg tape 10. After the prepreg tape 10 is cut, the tension of the prepreg tape 10 on the cutter roller 2 and anvil roller 1 disappears, the cutter roller 2 and anvil roller 1 stop rotating, and the cutter roller 2 switches from the second position to the first position, waiting for the next cutting command. This tape cutting mechanism has a simple structure, the tape cutting process does not affect the laying process, the laying process is uninterrupted, and therefore the key process parameters such as the movement speed, temperature, and pressure in the laying area are not affected by the tape cutting and will not fluctuate, resulting in good product performance consistency.

[0039] Furthermore, the cutting mechanism also includes a drive assembly capable of driving the cutter roller 2 to switch between a first position and a second position. When a cutting command is triggered, the drive assembly drives the cutter roller 2 to switch from the first position to the second position; after cutting is completed, the drive assembly drives the cutter roller 2 to switch from the second position back to the first position. This configuration ensures the accuracy of the position change of the cutter roller 2, further improving the operational quality of the cutting mechanism. Specifically, as... Figure 2 As shown, the cutting mechanism also includes a first connecting shaft 4, on which the cutter roller 2 is rotatably mounted. The driving assembly includes a driving member 51 and a transmission member 52. One end of the transmission member 52 is connected to the output end of the driving member 51, and the other end is connected to the first connecting shaft 4. When a cutting command is triggered, the driving member 51 drives the transmission member 52 to move, thereby pushing the cutter roller 2 to move, causing the cutter roller 2 to press against the anvil wheel 1. Under the pull of the prepreg tape 10, the cutter roller 2 rotates relative to the first connecting shaft 4. At the same time, the anvil wheel 1 and the cutter roller 2 rotate relative to each other. The cutter roller 2 drives the cutter 3 to rotate, thereby cutting the prepreg tape 10 shorter. After cutting is completed, the driving member 51 drives the cutter roller 2 away from the anvil wheel 1 through the transmission member 52, waiting for the next cutting command.

[0040] Optionally, in this embodiment, the driving component 51 is a cylinder, and the transmission component 52 is a connecting rod. The cylinder has a simple structure and is easy to maintain. The cylinder body is fixedly connected to the yarn-laying head of the automatic yarn-laying equipment, and the piston rod is fixedly connected to the connecting rod. The connecting rod is connected to both ends of the first connecting shaft 4. The piston drives the connecting rod to reciprocate, thereby realizing the switching of the cutter roller 2 between the first position and the second position.

[0041] The driving component 51 and the transmission component 52 can also be a combination of a motor and a cam. The connection method between the motor, the cam, and the cutter roller 2 will not be described in detail here. In this embodiment, the structure of the driving component 51 and the transmission component 52 is not specifically limited.

[0042] Furthermore, the cutting mechanism also includes a limiting member 6. Both ends of the limiting member 6 are movably mounted on the yarn-laying head of the automatic yarn-laying device. The limiting member 6 is fixedly connected to the transmission member 52, and the limiting member 6 can limit the cutter roller 2 to the second position. Specifically, in this embodiment, the limiting member 6 is a support shaft. Both ends of the support shaft are movably mounted on the yarn-laying head, and a limiting groove is provided on the yarn-laying head. The middle part of the support shaft is fixedly connected to the connecting rod. When the cutting command is triggered, the cylinder drives the connecting rod to move, pushing the cutter roller 2. Simultaneously, the support shaft moves with the connecting rod. When the support shaft is limited to the limiting groove on the yarn-laying head, the cutter roller 2 abuts against the anvil wheel 1. At this time, the support shaft limits the cutter roller 2 to the second position, and the cutter roller 2 and the anvil wheel 1 rotate relative to each other under the pull of the prepreg 10. The limiting member 6 ensures that when the cutter roller 2 switches from the first position to the second position, the point where the cutter roller 2 abuts against the anvil wheel 1 can be fixed at one point, thereby ensuring the cutting quality of the cutting mechanism.

[0043] Furthermore, multiple cutters 3 are provided, evenly arranged along the circumference of the cutter roller 2. These multiple cutters 3 can be used alternately during the cutting process, improving cutting efficiency. In this embodiment, three cutters 3 are provided, evenly arranged along the circumference of the cutter roller 2. The specific number of cutters 3 is not specifically limited here and can be set according to requirements.

[0044] Furthermore, the cross-sectional shapes of the blades of the multiple cutters 3 are all different. By setting the cross-sectional shapes of the blades of the multiple cutters 3 to be different, the corresponding cutter 3 can be selected according to the required cut shape of the prepreg tape 10, making the tape cutting mechanism more widely applicable.

[0045] Furthermore, the cutting edge of the cutter 3 is an oblique edge. Setting the cutting edge as an oblique edge can reduce cutting resistance and thus improve cutting efficiency.

[0046] Furthermore, the anvil wheel 1 includes a rubber component or a felt component. In this embodiment, the anvil wheel 1 is made of a soft material, such as rubber or felt. Making the anvil wheel 1 a soft material is beneficial because when cutting the tape, the cutter 3 passes through the prepreg tape 10 and enters the anvil wheel 1 to cut the prepreg tape 10, thereby improving the cutting efficiency.

[0047] This utility model embodiment also provides an automatic laying device, including a filament laying head and the above-mentioned cutting mechanism. The cutting mechanism includes a second connecting shaft 7, and an anvil wheel 1 is rotatably mounted on the second connecting shaft 7. The second connecting shaft 7 is connected to the filament laying head. By setting the cutting mechanism, this automatic laying device improves the quality of the product.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A tape cutting mechanism for use in automated laying equipment, characterized in that, The slicing mechanism includes: Anvil wheel (1); The blade roller (2) has its axis parallel to the axis of the anvil wheel (1). The blade roller (2) has a first position and a second position relative to the anvil wheel (1). The first position is in which the blade roller (2) and the anvil wheel (1) are spaced apart. The second position is in which the peripheral wall of the blade roller (2) abuts against the peripheral wall of the anvil wheel (1), and the blade roller (2) and the anvil wheel (1) can rotate relative to each other. The cutter (3) is disposed on the peripheral wall of the cutter roller (2).

2. The slicing mechanism according to claim 1, characterized in that, The cutting mechanism further includes a drive assembly for driving the cutter roller (2) to switch between the first position and the second position.

3. The slicing mechanism according to claim 2, characterized in that, The cutting mechanism further includes a first connecting shaft (4), and the cutter roller (2) is rotatably mounted on the first connecting shaft (4); The drive assembly includes a drive member (51) and a transmission member (52). One end of the transmission member (52) is connected to the output end of the drive member (51), and the other end of the transmission member (52) is connected to the first connecting shaft (4).

4. The slicing mechanism according to claim 3, characterized in that, The automatic laying device includes a yarn laying head, and the cutting mechanism further includes a limiting member (6). The two ends of the limiting member (6) are movably disposed on the yarn laying head. The limiting member (6) is fixedly connected to the transmission member (52). The limiting member (6) is used to limit the cutter roller (2) to the second position.

5. The slicing mechanism according to claim 3, characterized in that, The driving component (51) is a cylinder, and the transmission component (52) is a connecting rod.

6. The slitting mechanism according to any one of claims 1-5, characterized in that, The cutter (3) is provided in multiple ways, and the multiple cutters (3) are evenly arranged along the circumference of the cutter roller (2).

7. The slicing mechanism according to claim 6, characterized in that, The cross-sectional shapes of the blades of the multiple cutters (3) are all different.

8. The slitting mechanism according to any one of claims 1-5, characterized in that, The cutting blade (3) has a beveled edge.

9. The slicing mechanism according to any one of claims 1-5, characterized in that, The anvil wheel (1) includes a rubber component or a felt component.

10. An automatic laying device, characterized in that, It includes a filament-laying head and a cutting mechanism as described in any one of claims 1-9, the cutting mechanism including a second connecting shaft (7), the anvil wheel (1) being rotatably disposed on the second connecting shaft (7), and the second connecting shaft (7) being connected to the filament-laying head.

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