A prepreg cutting device

Abstract

The utility model relates to glass fiber cloth preparation technical field provides a kind of prepreg cutting device, including rack, setting drive mechanism and cutting mechanism on rack;Multiple size blocks are equipped on the rack;Gap is present between adjacent size block;The cutting mechanism includes pressing plate and knife plate;The lower end surface of the knife plate is equipped with the cutting edge corresponding with multiple gap position;The pressing plate is arranged directly below knife plate and is slidably connected with the knife plate;The pressing plate is equipped with empty part;When drive mechanism drives cutting mechanism to move downward, the pressing plate first contacts and presses prepreg, then the cutting edge of the knife plate passes through the empty part and the gap.This prepreg cutting device can realize the cutting of prepreg of different sizes according to the requirement of customer to set size block of different width, and can meet the requirement of multiple sizes at a time when cutting;Meanwhile, the device can ensure the quality of cutting.

Description

Technical Field

[0001] This utility model relates to the field of glass fiber cloth preparation technology, specifically a prepreg cutting device. Background Technology

[0002] Prepreg, also known as "PP sheet," is one of the main materials used in the production of multilayer boards. It is mainly composed of resin and reinforcing materials, which are further divided into several types, such as fiberglass cloth, paper-based materials, and composite materials. The prepregs used in the production of multilayer printed circuit boards mostly use fiberglass cloth as the reinforcing material. The fiberglass cloth is treated, impregnated with resin, and then heat-treated (pre-baked) to bring the resin into the B stage, resulting in a thin sheet material called a prepreg. It softens under heat and pressure and cures upon cooling.

[0003] During the inspection of glass cloth, when defects are encountered, the cloth is usually cut open first, and then spliced ​​using prepreg. Therefore, the workshop regularly cuts prepreg. When cutting PP sheets, customers have certain requirements for the size of the prepreg, especially the width. If traditional manual cutting is used, the size will have obvious errors and will not meet the width requirements.

[0004] Therefore, the technical problem to be solved in this case is: how to solve the problem of significant size errors when cutting PP sheets. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a prepreg cutting device. This prepreg cutting device can set different width size blocks according to customer requirements to achieve the cutting of prepregs of different sizes. It can meet the requirements of multiple sizes at one time during cutting. At the same time, this device can ensure the cutting quality.

[0006] The technical solution of this utility model is:

[0007] A prepreg cutting device includes a frame, a drive mechanism mounted on the frame, and a cutting mechanism. The frame has multiple sized blocks; gaps exist between adjacent sized blocks. The cutting mechanism includes a pressure plate and a blade; the lower end face of the blade has cutting edges corresponding to the positions of the multiple gaps. The drive mechanism is mounted on the frame, and its movable end is connected to the pressure plate and used to drive the pressure plate to move vertically. The pressure plate is positioned directly below the blade and slidably connected to it; the pressure plate has a hollow portion.

[0008] When the drive mechanism drives the cutting mechanism to move downward, the pressure plate first contacts and presses the prepreg, and then the cutting edge of the blade passes through the cavity and the gap.

[0009] The prepreg cutting device described above also includes a feeding roller, which is disposed on one side of the frame and used to provide the prepreg.

[0010] The prepreg cutting device described above also includes a support roller; the support roller is mounted on the frame and is used to guide the prepreg.

[0011] In the above-mentioned prepreg cutting device, guide posts are provided around the pressure plate; the pressure plate is provided with through holes corresponding to the guide posts; the pressure plate is slidably connected to the bottom of the blade plate through the guide posts passing through the through holes.

[0012] In the above-mentioned prepreg cutting device, a first spring is sleeved on the guide post; the first spring is arranged between the pressure plate and the blade plate.

[0013] In the aforementioned prepreg cutting device, a limiting block is provided on the upper end face of the guide post.

[0014] In the above-mentioned prepreg cutting device, a second spring is sleeved on the guide post; the second spring is arranged in the above-mentioned prepreg cutting device, and a baffle for restricting the prepreg is provided on one side of the frame.

[0015] One of the above-described technical solutions of this utility model has at least one of the following advantages or beneficial effects:

[0016] This invention can set size blocks of different widths according to customer requirements to achieve the cutting of prepreg sheets of different sizes. It can meet the requirements of multiple sizes at one time during the cutting process. At the same time, it reduces human intervention in the process, makes the cutting size accurate, and reduces the labor intensity of workers. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present invention;

[0018] Figure 2 This is a side view of Embodiment 1 of the present invention;

[0019] Figure 3 This is Embodiment 1 of the present utility model. Figure 1 A partial schematic diagram;

[0020] Figure 4 This is a cross-sectional schematic diagram of the cutting process in Embodiment 1 of this utility model.

[0021] The correspondence between the labels in the diagram is as follows:

[0022] Prepreg a; Frame 1; Baffle 11; Size block 101; Drive mechanism 2; Cutting mechanism 3; Pressure plate 31; Hollow part 301; Guide column 311; Limiting block 312; First spring 313; Second spring 314; Blade 32; Cutting blade 321; Feeding roller 4; Support roller 5. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] refer to Figures 1 to 4 A prepreg cutting device includes a frame 1, a drive mechanism 2 and a cutting mechanism 3 mounted on the frame 1; the frame 1 has a plurality of size blocks 101; there are gaps between adjacent size blocks 101; the cutting mechanism 3 includes a pressure plate 31 and a blade 32; the lower end face of the blade 32 is provided with cutting edges 321 corresponding to the positions of the plurality of gaps; the drive mechanism 2 is mounted on the frame 1, and the movable end of the drive mechanism 2 is connected to the pressure plate 31 and used to drive the pressure plate 31 to move vertically; the pressure plate 31 is arranged directly below the blade 32 and is slidably connected to the blade 32; the pressure plate 31 has a hollow portion 301;

[0026] When the drive mechanism 2 drives the cutting mechanism 3 to move downward, the pressure plate 31 first contacts and presses the semi-cured sheet a, and then the cutting edge 321 of the blade 32 passes through the cavity 301 and the gap.

[0027] In this embodiment, the driving mechanism 2 is a cylinder, which is fixed above the size block 101 by a bracket. In other embodiments, a hydraulic cylinder may also be used. It should be noted that in this embodiment, there are seven size blocks 101 with dimensions of 4cm, 4cm, 5cm, 3cm, and 6cm, corresponding to seven cutting blades 321 in corresponding positions. Of course, in practical applications, additional blades can be used as needed.

[0028] In practical applications, the system also includes a feeding roller 4 and a support roller 5. The feeding roller 4 is disposed on one side of the frame 1 and is used to provide the semi-cured sheet a; the support roller 5 is disposed on the frame 1 and is used to guide the semi-cured sheet a. In this embodiment, there are two support rollers 5, and the upper end face of the support roller 5 overlaps with the upper end face of the dimensional block 101; the feeding roller 4 is disposed below the support roller 5; (Reference) Figure 2In practical applications, the semi-cured sheet a of the feeding roller 4 passes around the support roller 5 and enters the frame 1. Of course, this embodiment only provides one implementation method and does not limit the setting position and method of the feeding roller 4 and the support roller 5.

[0029] In this embodiment, specifically, guide posts 311 are provided around the four sides of the pressure plate 31, with four guide posts 311 respectively located at the four corners of the pressure plate 31. The pressure plate 31 has through holes 302 corresponding to the guide posts 311. The pressure plate 31 is slidably connected to the underside of the blade plate 32 through the guide posts 311 passing through the through holes 302. The above design is mainly to allow the pressure plate 31 to contact the prepreg a on the frame 1 before the blade plate 32, thereby pressing the prepreg a onto the frame 1 and preventing the prepreg a from shifting during the stamping process of the blade plate 32, which would cause dimensional deviations. In addition, in other embodiments, a rough surface can be made on the lower end face of the pressure plate 31 to further prevent the prepreg a from shifting.

[0030] More specifically, in order to prevent the pressure plate 31 from detaching from the blade plate 32, a limiting block 312 is provided on the upper end surface of the guide post 311.

[0031] Preferably, a first spring 313 is sleeved on the guide post 311; the first spring 313 is arranged between the pressure plate 31 and the blade plate 32. In this preferred embodiment, during the continuous downward pressing of the blade plate 32, the first spring 313 is first compressed, applying a vertically downward force to the pressure plate 31, causing the pressure plate 31 to further press the prepreg a, and then the protruding cutting blade 321 passes through the cavity 301 and the gap to complete the cutting of the prepreg a. This method not only further prevents the prepreg a from shifting during the cutting process, but also avoids direct collision between the blade plate 32 and the pressure plate 31.

[0032] More preferably, a second spring 314 is sleeved on the guide post 311; the second spring 314 is arranged between the blade plate 32 and the limiting block 312. Similarly, the function of the second spring 314 is to prevent the blade plate 32 and the limiting block 312 from colliding directly.

[0033] It should be noted that in this embodiment, one end of the first spring 313 is fixed to the pressure plate 31, while the other end is not fixedly connected; one end of the second spring 314 is fixed to the limiting block 312, while the other end is not fixedly connected. That is, the blade plate 32 will not be affected by the first spring 313 and the second spring 314 simultaneously.

[0034] In practical applications, in order to facilitate workers to quickly pull the semi-cured sheet a to the designated position, a baffle 11 for restricting the semi-cured sheet a is provided on one side of the frame 1.

[0035] In summary, the working principle of this embodiment is as follows: the worker pulls the semi-cured sheet a on the feeding roller 4, and after passing the support roller 5, it enters the frame 1. One end of the semi-cured sheet a presses against the baffle 11. After the feeding is completed, the drive mechanism 2 can be started to make the entire cutting mechanism 3 move vertically downward. During the movement, the pressure plate 31 first contacts and presses the semi-cured sheet a, and then the cutting blade 321 of the blade 32 passes through the cavity 301 and the gap in turn to complete the cutting and reset. The worker collects the cut semi-cured sheet a; the above steps are repeated to prepare semi-cured sheets a of various sizes.

[0036] The prepreg cutting device of this embodiment can set different width size blocks 101 according to customer requirements to cut prepreg a of different sizes. It can meet the requirements of multiple sizes at one time during the cutting process. At the same time, it reduces human intervention in the process, makes the cutting size accurate, and reduces the labor intensity of workers.

[0037] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A prepreg cutting device, characterized in that, The device includes a frame, a drive mechanism mounted on the frame, and a cutting mechanism. The frame has multiple sized blocks, with gaps between adjacent blocks. The cutting mechanism includes a pressure plate and a blade. The lower end face of the blade has cutting edges corresponding to the positions of the multiple gaps. The drive mechanism is mounted on the frame, and its movable end is connected to the pressure plate and used to drive the pressure plate to move vertically. The pressure plate is positioned directly below the blade and is slidably connected to it. The pressure plate has a hollow portion. When the drive mechanism drives the cutting mechanism to move downward, the pressure plate first contacts and presses the prepreg, and then the cutting edge of the blade passes through the cavity and the gap.

2. The prepreg cutting device according to claim 1, characterized in that, It also includes a feeding roller, which is disposed on one side of the frame and is used to provide the semi-cured sheet.

3. The prepreg cutting device according to claim 2, characterized in that, It also includes idler rollers; the idler rollers are mounted on the frame and used to guide the prepreg.

4. The prepreg cutting device according to claim 1, characterized in that, The pressure plate is provided with guide posts on all four sides; the pressure plate is provided with through holes corresponding to the guide posts; the pressure plate is slidably connected to the bottom of the blade plate through the guide posts passing through the through holes.

5. The prepreg cutting device according to claim 4, characterized in that, A first spring is fitted onto the guide post; the first spring is arranged between the pressure plate and the blade plate.

6. The prepreg cutting device according to claim 4, characterized in that, The upper end face of the guide post is provided with a limiting block.

7. The prepreg cutting device according to claim 6, characterized in that, A second spring is fitted onto the guide post; the second spring is arranged between the blade plate and the limiting block.

8. The prepreg cutting device according to claim 1, characterized in that, A baffle is provided on one side of the frame to restrict the prepreg.

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