Automatic prepreg cutting device

Abstract

The utility model belongs to the technical field of prepreg production, and particularly relates to an automatic prepreg cutting device which comprises a conveying table. The top of the conveying table is fixedly connected with a top plate, the top of the top plate is fixedly connected with an air cylinder, the bottom of the air cylinder is fixedly connected with a cutter, one side of the conveying table is fixedly connected with an unwinding table, one side of the unwinding table is fixedly connected with a motor, one end of the motor is fixedly connected with an unwinding roller, and the unwinding roller is rotationally connected with the unwinding table. A driven roller is arranged on one side of the unwinding roller and rotationally connected with the unwinding table, a flattening roller is arranged at the top of the driven roller and rotationally connected with the unwinding table, the driven roller and the flattening roller are arranged, the driven roller and the flattening roller are used for leveling bent prepregs, and therefore the phenomenon that the prepreg is uneven when the prepregs are cut by a cutter is reduced. When the prepreg is damaged or cracked, the motor drives the prepreg to be unwound, and a power source is provided for cutting operation of the prepreg.

Description

Technical Field

[0001] This utility model belongs to the field of prepreg production technology, specifically an automatic prepreg cutting device. Background Technology

[0002] Currently, prepregs are widely used in the manufacturing of electronic devices. Prepregs are thin sheets made by impregnating treated fiberglass cloth with resin, followed by heat treatment (pre-baking) to bring the resin into the B-stage. They soften under heat and pressure and cure upon cooling. In electronic device production, prepregs are a primary material for multilayer board production. Currently, on prepreg production lines, finished prepregs are collected in rolls and transported to the cutting workshop for unwinding and cutting before use.

[0003] In existing technologies, when prepreg is unwound, it is not flat, and subsequent cutting may cause damage or cracks to the prepreg.

[0004] Therefore, this utility model provides an automatic cutting device for prepreg. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: An automatic prepreg cutting device of this utility model includes a conveyor table; a top plate is fixedly connected to the top of the conveyor table, a cylinder is fixedly connected to the top of the top plate, and a cutter is fixedly connected to the bottom of the cylinder; an unwinding table is fixedly connected to one side of the conveyor table, a motor is fixedly connected to one side of the unwinding table, an unwinding roller is fixedly connected to one end of the motor, the unwinding roller is rotatably connected to the unwinding table, a driven roller is provided on one side of the unwinding roller, the driven roller is rotatably connected to the unwinding table, and a flattening roller is provided at the top of the driven roller, the flattening roller is rotatably connected to the unwinding table. During operation, the prepreg is first placed on the unwinding roller, and the motor is started to unwind. The prepreg is stretched from the end of the driven roller, passing between the driven roller and the flattening roller. As the prepreg passes the driven roller, it drives the driven roller to rotate, reducing friction between the driven roller and the prepreg. The flattening roller flattens the prepreg for subsequent cutting. The prepreg is then placed on a conveyor table, which starts to drive the prepreg to rotate. Subsequently, the cylinder is activated, driving the cutter to descend and cut the prepreg. By setting the driven roller and the flattening roller, the bent prepreg is leveled, reducing the possibility of damage or cracks caused by unevenness during cutting. The motor drives the prepreg to unwind, providing power for the prepreg cutting operation.

[0007] Preferably, two suction pipes are fixedly connected to the middle of the conveyor table. One side of each suction pipe is connected to a through pipe, and one end of the through pipe is connected to a fan. The fan is fixedly connected to the conveyor table, and a suction port is opened on the other side of each suction pipe. During operation, after the fan is started, a negative pressure is created in the through pipe and the suction pipe, generating suction force. This suction force acts on the area near the prepreg cutting position from the suction port, adsorbing and collecting the dust and debris generated by the cutter cutting the prepreg. By setting up suction pipes, through pipes, and a fan to collect dust, the adhesion performance of the prepreg, which may be affected by dust and impurities, is reduced, thus affecting the quality.

[0008] Preferably, extension plates are fixedly connected to both sides of the cutter. The top of the extension plate is connected to a first external air pipe, and the bottom of the extension plate is connected to multiple air holes. During operation, the first external air pipe is connected to an air pump. Airflow enters the extension plate from the first external air pipe and then disperses from the air holes, acting on the surface of the cut semi-cured sheet to clean and guide the dust in the middle of the semi-cured sheet, causing it to move towards the dust suction port. The dust suction port then sucks it into the dust suction pipe, thus achieving a more comprehensive dust collection effect.

[0009] Preferably, an air guide pipe is provided on one side of the driven roller. The air guide pipe is fixedly connected to the unwinding table. One end of the air guide pipe is connected to a second external air pipe. An air outlet is opened at the bottom of the air guide pipe. During operation, the second external air pipe is connected to hot air. The hot air enters the air guide pipe and is emitted from the air outlet, acting on the prepreg to heat-treat the prepreg and soften it. The heat treatment softens the resin in the prepreg, significantly reducing the amount of dust generated during cutting. At the same time, it reduces the hardness of the prepreg, making it easier to achieve precise cutting. This helps to improve the dimensional and shape accuracy of the product.

[0010] Preferably, a dust collection box is connected to the middle of the pipe, and a collection trough is snapped onto one side of the dust collection box. A filter screen is fixedly connected to the bottom of the collection trough. During operation, dust enters the dust collection box through the pipe, is intercepted by the filter screen, and accumulates in the collection trough. The collection trough can be pulled out of the dust collection box to clean the dust in the collection trough. This can reduce the impact of dust on the fan, and the dust accumulation facilitates subsequent centralized treatment.

[0011] Preferably, a sealing strip is fixedly connected to the top and bottom of the collection trough. The sealing strip is semi-circular in shape. During operation, the sealing strip fills the gap between the collection trough and the dust collection box to ensure the airtightness of the dust collection box.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The automatic prepreg cutting device of this utility model, by setting a driven roller and a flattening roller, adjusts the bent prepreg to reduce the phenomenon of damage or cracks in the prepreg caused by unevenness of the prepreg during cutting by the cutter. The motor drives the prepreg to unwind, providing a power source for the prepreg cutting operation.

[0014] 2. The automatic prepreg cutting device of this utility model collects dust by setting up a dust suction pipe, a through pipe, and a fan, reducing the possibility that dust and impurities may affect the bonding performance of the prepreg and thus affect its quality. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the cutting tool in this utility model;

[0018] Figure 3 This is a schematic diagram of the unwinding table in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the vacuum tube in this utility model;

[0020] Figure 5 This is a schematic diagram of the dust collection box in this utility model;

[0021] In the diagram: 1. Conveyor table; 11. Top plate; 12. Cylinder; 13. Cutting tool; 14. Unwinding table; 15. Motor; 16. Unwinding roller; 17. Driven roller; 18. Flattening roller; 2. Dust suction pipe; 21. Through pipe; 22. Fan; 23. Dust suction port; 3. Extension plate; 31. First external air pipe; 32. Air hole; 4. Air guide pipe; 41. Second external air pipe; 42. Air outlet; 5. Dust collection box; 51. Collection trough; 52. Filter screen; 6. Sealing strip. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 3As shown in the embodiment of this utility model, an automatic prepreg cutting device includes a conveyor table 1; a top plate 11 is fixedly connected to the top of the conveyor table 1, a cylinder 12 is fixedly connected to the top of the top plate 11, and a cutter 13 is fixedly connected to the bottom of the cylinder 12; an unwinding table 14 is fixedly connected to one side of the conveyor table 1, a motor 15 is fixedly connected to one side of the unwinding table 14, an unwinding roller 16 is fixedly connected to one end of the motor 15, the unwinding roller 16 is rotatably connected to the unwinding table 14, a driven roller 17 is provided on one side of the unwinding roller 16, the driven roller 17 is rotatably connected to the unwinding table 14, and a flattening roller 18 is provided on the top of the driven roller 17, which is rotatably connected to the unwinding table 14. During operation, the prepreg is first placed on the unwinding roller 16, and the motor 15 is started to unwind the prepreg. The end of the prepreg is stretched from the driven roller 17, allowing it to pass between the driven roller 17 and the flattening roller 18. As the prepreg passes the driven roller 17, it drives the driven roller 17 to rotate, reducing friction between the driven roller 17 and the prepreg. The flattening roller 18 flattens the prepreg for subsequent cutting. The prepreg is then placed on the conveyor table 1, which starts to drive the prepreg to rotate. Subsequently, the cylinder 12 is activated, driving the cutter 13 to descend. The cutter 13 cuts the prepreg. By setting the driven roller 17 and the flattening roller 18, the driven roller 17 and the flattening roller 18 level the bent prepreg, reducing the possibility of damage or cracks to the prepreg caused by unevenness during cutting by the cutter 13. The motor 15 drives the prepreg to unwind, providing power for the prepreg cutting operation.

[0024] like Figures 1 to 4 As shown, two suction pipes 2 are fixedly connected to the middle of the conveyor table 1. One side of the suction pipe 2 is connected to a through pipe 21, and one end of the through pipe 21 is connected to a fan 22. The fan 22 is fixedly connected to the conveyor table 1. The other side of the suction pipe 2 has a suction port 23. When working, after the fan 22 is started, a negative pressure is created in the through pipe 21 and the suction pipe 2, generating suction force. This suction force acts on the area near the prepreg cutting position from the suction port 23, adsorbing and collecting the dust and debris generated by the cutter 13 cutting the prepreg. By setting up the suction pipe 2, through pipe 21, and fan 22 to collect dust, the adhesion performance of the prepreg, which may be affected by dust and impurities, is reduced, thus affecting the quality.

[0025] like Figures 1 to 2As shown, extension plates 3 are fixedly connected to both sides of the cutter 13. The top of the extension plate 3 is connected to a first external air pipe 31, and the bottom of the extension plate 3 is connected to multiple air holes 32. During operation, the first external air pipe 31 is connected to an air pump. The airflow enters the extension plate 3 from the first external air pipe 31 and then disperses from the air holes 32, acting on the surface of the cut semi-cured sheet to clean and guide the dust in the middle of the semi-cured sheet, causing it to move towards the dust suction port 23. The dust suction port 23 sucks it into the dust suction pipe 2, thus achieving a more comprehensive dust collection effect.

[0026] like Figures 1 to 4 As shown, an air guide pipe 4 is provided on one side of the driven roller 17. The air guide pipe 4 is fixedly connected to the unwinding table 14. One end of the air guide pipe 4 is connected to a second external air pipe 41. An air outlet 42 is opened at the bottom of the air guide pipe 4. During operation, the second external air pipe 41 is connected to hot air. The hot air enters the air guide pipe 4 and is emitted from the air outlet 42, acting on the prepreg to heat-treat the prepreg and soften it. The heat treatment softens the resin in the prepreg, significantly reducing the amount of dust generated during cutting. At the same time, it reduces the hardness of the prepreg, making it easier to achieve precise cutting. This helps to improve the dimensional and shape accuracy of the product.

[0027] like Figures 1 to 5 As shown, a dust collection box 5 is connected to the middle of the pipe 21. A collection trough 51 is snapped onto one side of the dust collection box 5. A filter screen 52 is fixedly connected to the bottom of the collection trough 51. During operation, dust enters the dust collection box 5 through the pipe 21. After being intercepted by the filter screen 52, it accumulates in the collection trough 51. The dust collection box 5 is pulled out of the collection trough 51 to clean the dust in the collection trough 51. This can reduce the impact of dust on the fan 22. At the same time, the dust accumulation facilitates subsequent centralized treatment.

[0028] like Figure 5 As shown, a sealing strip 6 is fixedly connected to the top and bottom of the collection trough 51. The sealing strip 6 is semi-circular. During operation, the sealing strip 6 fills the gap between the collection trough 51 and the dust collection box 5 to ensure the airtightness of the dust collection box 5.

[0029] Working principle: First, the prepreg is placed on the unwinding roller 16. The motor 15 starts to unwind, stretching the end of the prepreg to the driven roller 17, allowing it to pass between the driven roller 17 and the flattening roller 18. As the prepreg passes through the driven roller 17, it drives the driven roller 17 to rotate, reducing friction between the driven roller 17 and the prepreg. The flattening roller 18 flattens the prepreg for subsequent cutting. Then, the prepreg is placed on the conveyor table 1. The conveyor table 1 starts to drive the prepreg to rotate. Subsequently, the cylinder 12 is activated, driving the cutter 13 to descend. The cutter 13 cuts the prepreg, and the process is completed by setting the driven roller... The driven roller 17 and the flattening roller 18 level the bent prepreg, reducing the risk of damage or cracks to the prepreg during cutting by the cutter 13 due to unevenness. The motor 15 drives the prepreg to unwind, providing power for the cutting operation. After the fan 22 starts, it creates negative pressure in the through pipe 21 and the suction pipe 2, generating suction. This suction acts on the area near the cutting position of the prepreg through the suction port 23, adsorbing and collecting the dust and debris generated by the cutter 13. By setting up the suction pipe 2, through pipe 21, and fan 22 to collect dust, the amount of dust and impurities is reduced. This may affect the bonding performance of the prepreg, thus affecting the quality. The first external air pipe 31 is connected to an air pump. Airflow enters the extension plate 3 from the first external air pipe 31 and then exits from the air hole 32, acting on the surface of the cut prepreg to clean and guide the dust in the middle of the prepreg, causing it to move towards the dust suction port 23. The dust suction port 23 sucks it into the dust suction pipe 2, thus achieving a more comprehensive dust collection effect. The second external air pipe 41 is connected to hot air. Hot air enters the air guide pipe 4 and exits from the air outlet 42, acting on the prepreg to heat-treat it, softening it. The heat treatment makes the prepreg softer. The resin in the prepreg softens, significantly reducing the amount of dust generated during cutting. At the same time, the hardness of the prepreg is reduced, making it easier to achieve precise cutting. This helps improve the dimensional and shape accuracy of the product. The dust enters the dust collection box 5 through the pipe 21, is intercepted by the filter screen 52, and accumulates in the collection trough 51. The dust collection box 51 can be pulled out of the collection trough 51 to clean the dust inside. This reduces the impact of dust on the fan 22. At the same time, the dust accumulation facilitates subsequent centralized processing. The sealing strip 6 fills the gap between the collection trough 51 and the dust collection box 5 to ensure the airtightness of the dust collection box 5.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic prepreg cutting device, comprising a conveyor table (1); characterized in that: A top plate (11) is fixedly connected to the top of the conveyor (1), a cylinder (12) is fixedly connected to the top of the top plate (11), a cutter (13) is fixedly connected to the bottom of the cylinder (12), an unwinding table (14) is fixedly connected to one side of the conveyor (1), a motor (15) is fixedly connected to one side of the unwinding table (14), an unwinding roller (16) is fixedly connected to one end of the motor (15), the unwinding roller (16) is rotatably connected to the unwinding table (14), a driven roller (17) is provided on one side of the unwinding roller (16), the driven roller (17) is rotatably connected to the unwinding table (14), a flattening roller (18) is provided on the top of the driven roller (17), and the flattening roller (18) is rotatably connected to the unwinding table (14).

2. The automatic prepreg cutting device according to claim 1, characterized in that: Two suction pipes (2) are fixedly connected in the middle of the conveyor (1). One side of the suction pipe (2) is connected to a through pipe (21), and one end of the through pipe (21) is connected to a fan (22). The fan (22) is fixedly connected to the conveyor (1), and a suction port (23) is opened on the other side of the suction pipe (2).

3. The automatic prepreg cutting device according to claim 2, characterized in that: The blade (13) is fixedly connected to two sides by an extension plate (3), the top of the extension plate (3) is connected to a first external air pipe (31), and the bottom of the extension plate (3) is connected to multiple air holes (32).

4. The automatic prepreg cutting device according to claim 3, characterized in that: The driven roller (17) is provided with an air guide pipe (4) on one side. The air guide pipe (4) is fixedly connected to the unwinding table (14). One end of the air guide pipe (4) is connected to a second external air pipe (41). An air outlet (42) is opened at the bottom of the air guide pipe (4).

5. The automatic prepreg cutting device according to claim 4, characterized in that: The middle part of the pipe (21) is connected to a dust collection box (5), and a collection trough (51) is snapped into one side of the dust collection box (5). A filter screen (52) is fixedly connected to the bottom of the collection trough (51).

6. The automatic prepreg cutting device according to claim 5, characterized in that: The top and bottom of the collection trough (51) are fixedly connected with sealing strips (6), which are semi-circular in shape.

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