Prepreg cutting equipment for manufacturing glass fiber composite material

Abstract

The prepreg cutting equipment for glass fiber composite manufacturing comprises a processing table, the side face of the processing table is fixedly connected with a supporting plate, and the end, away from the processing table, of the supporting plate is fixedly connected with a limiting frame; one side of the laser cutting assembly is fixedly connected with a reinforcing plate through a support; the trowelling device is used for trowelling the prepreg to be processed; the feeding device is used for conveying the prepreg to be processed to the laser cutting assembly; and the two sets of supporting plates are symmetrically distributed on the two sides of the machining table, the limiting frame is sleeved with the reinforcing plate, and the reinforcing plate is fixedly connected with the limiting frame. According to the prepreg cutting equipment for manufacturing the glass fiber composite material, prepreg on the feeding device is flattened, and the situation that the prepreg is in an uneven state before being cut is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of composite material manufacturing, in particular to a prepreg cutting device for manufacturing glass fiber composite material. Background Art

[0002] Glass fiber has excellent properties such as good insulation, low thermal conductivity, and strong sound absorption. In recent years, it has been widely used in aerospace, military chemical industry and other fields. Among many polymer composite materials, fiber-reinforced composite materials have attracted widespread attention due to their excellent comprehensive properties, such as high impact resistance, high modulus, high mechanical properties, and high wear resistance. Glass fiber has good corrosion resistance, heat resistance, good mechanical strength, and low raw material prices. It is widely used in composite materials for reinforcement purposes. Composite materials are widely used in aviation, aerospace, high-speed rail, automobiles and other fields because of their high specific strength, high specific stiffness, fatigue resistance, and corrosion resistance. In various molding processes of composite materials, the cutting of prepreg (fiber cloth) is an indispensable link.

[0003] When laser cutting the prepreg, the existing device cannot smooth the prepreg on the feeding device. If the prepreg is in an uneven state before cutting, the size of the prepreg will be inaccurate during cutting, thereby reducing the cutting efficiency. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides: a prepreg cutting device for glass fiber composite material manufacturing, comprising:

[0005] A processing table, wherein a support plate is fixedly connected to the side of the processing table, and an end of the support plate away from the processing table is fixedly connected to a limit frame;

[0006] A laser cutting assembly, one side of which is fixedly connected to a reinforcement plate via a bracket;

[0007] A smoothing device, which is used to smooth the prepreg to be processed;

[0008] A feeding device, through which the prepreg to be processed is transported to the laser cutting assembly;

[0009] The support plates are provided in two groups, and the two groups of support plates are symmetrically distributed on both sides of the processing table. The reinforcement plate is sleeved on the limit frame and fixedly connected to the limit frame. The laser cutting assembly is arranged inside the limit frame. One side of the smoothing device is fixedly connected to the inner wall of the limit frame. The bottom of the feeding device is fixedly connected to the top of the processing table.

[0010] Wherein, the smoothing device comprises:

[0011] A movable plate, a side of which is fixedly connected to an electric slide, and the interior of the electric slide is slidably connected to an adjusting rod via an electric slider;

[0012] A smoothing roller, the end of which is penetrated by a positioning rod, both ends of which are fixedly connected to a pressing frame through a bracket, the smoothing roller is adjusted to a specified position, and then the electric slide is turned on to drive the pressing frame to slide downward, and the pressing frame drives the smoothing roller to smooth the prepreg on the feeding device, so as to avoid the prepreg being in an uneven state before cutting, thereby improving the accuracy of the cutting size.

[0013] Preferably, the electric slide is provided with two groups, and the two groups of electric slides are symmetrically distributed on both sides of the movable plate. The outer side of the positioning rod is rotatably connected to the smoothing roller through a bearing, and the end of the adjustment rod away from the electric slide is fixedly connected to the top of the pressing frame.

[0014] Preferably, the smoothing device also includes an electronic slide rail, the interior of the electronic slide rail is slidably connected to the movable plate through an electric slider, and two groups of electronic slide rails are provided. The two groups of electronic slide rails are symmetrically distributed at both ends of the movable plate, and the side of the electronic slide rail away from the movable plate is fixedly connected to the inner wall of the limit frame.

[0015] Preferably, the feeding device includes a first conveying roller and a second conveying roller, the first conveying roller and the second conveying roller are connected by a conveying belt transmission, support frames are installed at both ends of the first conveying roller and the second conveying roller, a tightening device is fixedly connected to one side of the conveying belt, and a toggle device is provided on one side of the first conveying roller.

[0016] Preferably, the first conveyor roller and the second conveyor roller are both electric conveyor rollers, the bottom of the support frame is fixedly connected to the top of the processing table, and multiple groups of the tightening devices are provided. The multiple groups of tightening devices are evenly distributed on the conveying belt. The multiple groups of tightening devices can be used to perform assembly line cutting on the prepreg to improve processing efficiency. The conveying belt is provided with two groups.

[0017] Preferably, the tightening device includes a fixing plate, a rectangular opening is provided on the top of the fixing plate, a positioning frame is fixedly connected to the top of the fixing plate near the rectangular opening, the top of the positioning frame passes through and is fixedly connected to the movable end of the electric telescopic rod, and is fixedly connected to the tightening plate, and a side of the tightening plate away from the electric telescopic rod is fixedly connected to an anti-skid pad, the prepreg is placed on the conveying belt, and one side of the prepreg is located under the fixing plate, and then the electric telescopic rod is turned on, and the tightening plate is pushed by the extension of the electric telescopic rod to push the tightening plate out of the rectangular opening, and the tightening plate drives the anti-skid pad to squeeze the prepreg on the conveying belt and tighten the prepreg to the conveying belt, and the conveying belt plus the tightening plate can be used to drive the prepreg to move to the laser cutting knife for cutting, thereby improving stability during transportation.

[0018] Preferably, one side of the fixing plate is fixedly connected to the side of the conveying belt, and one end of the electric telescopic rod close to the tightening plate passes through the rectangular opening.

[0019] Preferably, the toggle device includes a lifting plate, the end of the lifting plate is slidably connected to an electronic slide through an electric slider, the top of the lifting plate is fixedly connected to a connecting plate, one side of the connecting plate is fixedly connected to a toggle column, the outer side of the toggle column is fixedly connected to a toggle plate, the tightening plate and the conveying belt drive the clamped prepreg to move, and then the electronic slide is turned on, and the lifting plate is driven to move upward by the electric slider inside the electronic slide, the lifting plate drives the toggle column to move through the connecting plate, and the toggle column drives the toggle plate to move, so that the toggle column passes through between the two groups of conveying belts, and when the prepreg passes through the toggle plate during the movement, the toggle plate can smooth the part of the prepreg folded downward, thereby improving the cutting accuracy.

[0020] Preferably, the bottom of the electronic slide is fixedly connected to the top of the processing table, and two groups of electronic slides are provided, and the two groups of electronic slides are symmetrically distributed at both ends of the lifting plate. Two groups of connecting plates are provided, and the two groups of connecting plates are symmetrically distributed at both ends of the toggle column.

[0021] The present invention provides a prepreg cutting device made of glass fiber composite material. It has the following beneficial effects:

[0022] 1. This prepreg cutting equipment made of glass fiber composite material adjusts the smoothing roller to a specified position by installing a smoothing device, then turns on the electric slide to drive the pressing frame to slide downward, and the pressing frame drives the smoothing roller to smooth the prepreg on the feeding device, so as to avoid the prepreg being in an uneven state before cutting and improve the accuracy of the cutting size.

[0023] 2. The prepreg cutting equipment made of glass fiber composite material, through the installation of the tightening device, the prepreg is placed on the conveying belt, and one side of the prepreg is located below the fixed plate, and then the electric telescopic rod is turned on, and the tightening plate is pushed by the extension of the electric telescopic rod, and the tightening plate is pushed out from the rectangular opening. The tightening plate drives the anti-slip pad to squeeze the prepreg on the conveying belt, and the prepreg is tightened on the conveying belt. The conveying belt and the tightening plate can be used to drive the prepreg to move to the laser cutting knife for cutting, thereby improving the stability during transportation.

[0024] 3. The prepreg cutting equipment made of glass fiber composite material has a toggle device installed. When the tensioning plate drives the anti-skid pad to tighten one side of the prepreg against the belt, the transport belt drives the tensioning plate to move. The tensioning plate and the transport belt drive the clamped prepreg to move together. Then the electronic slide is turned on, and the electric slider inside the electronic slide drives the lifting plate to move upward. The lifting plate drives the toggle column to move through the connecting plate, and the toggle column drives the toggle plate to move, so that the toggle column passes through between the two groups of transport belts. When the prepreg passes through the toggle plate during the movement, the toggle plate can smooth the part of the prepreg that is folded downward, thereby improving the cutting accuracy.

[0025] 4. The prepreg cutting equipment made of glass fiber composite material, through the installation of the feeding device, the first conveyor roller and the second conveyor roller drive the conveyor belt to move, and the conveyor belt can drive the prepreg to the laser cutting component for cutting. Since multiple sets of tightening devices are installed on the conveyor belt, the multiple sets of tightening devices can be used to perform assembly line cutting on the prepreg, thereby improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a prepreg cutting device for manufacturing a glass fiber composite material of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the limit frame of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the reinforcement plate of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the smoothing roller of the present invention;

[0030] Figure 5 It is a schematic structural diagram of the first conveying roller of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the transport belt of the present invention;

[0032] Figure 7 It is a structural schematic diagram of the fixing plate of the present invention;

[0033] Figure 8 It is a structural schematic diagram of the toggle plate of the present invention.

[0034] In the figure: 1. processing table; 2. support plate; 3. limit frame; 4. laser cutting assembly; 5. reinforcement plate; 6. smoothing device; 61. moving plate; 62. electric slide; 63. adjusting rod; 64. smoothing roller; 65. positioning rod; 66. pressing frame; 67. electronic slide; 7. feeding device; 71. first conveying roller; 72. second conveying roller; 73. transport belt; 74. support frame; 75. tightening device; 751. fixing plate; 752. rectangular opening; 753. positioning frame; 754. electric telescopic rod; 755. tightening plate; 756. anti-slip pad; 76. toggle device; 761. lifting plate; 762. electronic slide; 763. connecting plate; 764. toggle column; 765. toggle plate. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0036] For the first embodiment, please refer to Figure 1-Figure 4 The present invention provides a technical solution: a prepreg cutting device for glass fiber composite material manufacturing, comprising:

[0037] A processing table 1, a support plate 2 is fixedly connected to the side of the processing table 1, and an end of the support plate 2 away from the processing table 1 is fixedly connected to a limit frame 3;

[0038] A laser cutting assembly 4, one side of the laser cutting assembly 4 is fixedly connected to a reinforcement plate 5 via a bracket;

[0039] A smoothing device 6, which is used to smooth the prepreg to be processed;

[0040] A feeding device 7, through which the prepreg to be processed is conveyed to the laser cutting assembly 4;

[0041] Two groups of support plates 2 are provided, and the two groups of support plates 2 are symmetrically distributed on both sides of the processing table 1. The reinforcement plate 5 is sleeved on the limit frame 3 and fixedly connected to the limit frame 3. The laser cutting assembly 4 is arranged inside the limit frame 3. One side of the smoothing device 6 is fixedly connected to the inner wall of the limit frame 3. The bottom of the feeding device 7 is fixedly connected to the top of the processing table 1.

[0042] Wherein, the smoothing device 6 comprises:

[0043] A movable plate 61, a side of the movable plate 61 is fixedly connected to an electric slide 62, and the inside of the electric slide 62 is slidably connected to an adjustment rod 63 via an electric slider;

[0044] The smoothing roller 64 has a positioning rod 65 running through the end of the smoothing roller 64 , and both ends of the smoothing roller 64 are fixedly connected to a pressing frame 66 through a bracket.

[0045] There are two groups of electric slides 62, which are symmetrically distributed on both sides of the movable plate 61. The outer side of the positioning rod 65 is rotatably connected to the smoothing roller 64 through a bearing, and the end of the adjustment rod 63 away from the electric slide 62 is fixedly connected to the top of the pressing frame 66.

[0046] The smoothing device 6 also includes an electronic slide rail 67, the interior of which is slidably connected to the movable plate 61 through an electric slider. Two groups of electronic slide rails 67 are provided, and the two groups of electronic slide rails 67 are symmetrically distributed at both ends of the movable plate 61. The side of the electronic slide rail 67 away from the movable plate 61 is fixedly connected to the inner wall of the limit frame 3.

[0047] During use, the operator puts the prepreg to be processed into the feeding device 7, uses the feeding device 7 to move the prepreg to the bottom of the laser cutting component 4, and turns on the laser cutting component 4 to cut the prepreg. When the prepreg is placed on the feeding device 7, the electronic slide rail 67 is turned on, and the electric slider inside the electronic slide rail 67 drives the moving plate 61 to move, and the moving plate 61 drives the electric slide 62 to move, and the electric slide 62 drives the adjusting rod 63 to move, and the adjusting rod 63 drives the positioning rod 65 to move through the pressing frame 66, and the positioning rod 65 drives the smoothing roller 64 to move, so that the smoothing roller 64 can be adjusted to the specified position, and then the electric slide 62 is turned on to drive the pressing frame 66 to slide downward, and the pressing frame 66 drives the smoothing roller 64 to smooth the prepreg on the feeding device 7, so as to avoid the prepreg being in an uneven state before cutting, thereby improving the accuracy of the cutting size.

[0048] For the second embodiment, please refer to Figure 1-Figure 8 The present invention provides a technical solution: on the basis of embodiment 1, the feeding device 7 includes a first conveying roller 71 and a second conveying roller 72, the first conveying roller 71 and the second conveying roller 72 are connected by a conveying belt 73, support frames 74 are installed at both ends of the first conveying roller 71 and the second conveying roller 72, a tightening device 75 is fixedly connected to one side of the conveying belt 73, and a toggle device 76 is provided on one side of the first conveying roller 71.

[0049] The first conveying roller 71 and the second conveying roller 72 are both electric conveying rollers. The bottom of the support frame 74 is fixedly connected to the top of the processing table 1. A plurality of tightening devices 75 are provided. The plurality of tightening devices 75 are evenly distributed on the conveying belt 73. The conveying belt 73 is provided with two groups.

[0050] The tightening device 75 includes a fixing plate 751, a rectangular opening 752 is opened on the top of the fixing plate 751, a positioning frame 753 is fixedly connected to the top of the fixing plate 751 near the rectangular opening 752, the top of the positioning frame 753 passes through and is fixedly connected to the movable end of the electric telescopic rod 754, and is fixedly connected to a tightening plate 755, and a side of the tightening plate 755 away from the electric telescopic rod 754 is fixedly connected to an anti-slip pad 756.

[0051] One side of the fixing plate 751 is fixedly connected to the side of the conveying belt 73 , and one end of the electric telescopic rod 754 close to the tightening plate 755 passes through the rectangular opening 752 .

[0052] The toggle device 76 includes a lifting plate 761, the end of which is slidably connected to an electronic slide 762 via an electric slider, the top of the lifting plate 761 is fixedly connected to a connecting plate 763, one side of the connecting plate 763 is fixedly connected to a toggle column 764, and the outer side of the toggle column 764 is fixedly connected to a toggle plate 765.

[0053] The bottom of the electronic slide 762 is fixedly connected to the top of the processing table 1. There are two groups of electronic slides 762, which are symmetrically distributed at both ends of the lifting plate 761. There are two groups of connecting plates 763, which are symmetrically distributed at both ends of the toggle column 764.

[0054] When in use, the worker places the prepreg on the conveyor belt 73, and then uses the tightening device 75 to fix the prepreg to be processed, and turns on the first conveyor roller 71 and the second conveyor roller 72. The conveyor belt 73 can be driven to move by the first conveyor roller 71 and the second conveyor roller 72, and the conveyor belt 73 can drive the prepreg to the laser cutting component 4 for cutting. Since multiple sets of tightening devices 75 are installed on the conveyor belt 73, the multiple sets of tightening devices 75 can be used to perform assembly line cutting on the prepreg, thereby improving processing efficiency.

[0055] The prepreg is placed on the conveyor belt 73, and one side of the prepreg is located under the fixed plate 751. The electric telescopic rod 754 is then turned on. The tensioning plate 755 is pushed by the extension of the electric telescopic rod 754, and the tensioning plate 755 is pushed out from the rectangular opening 752. The tensioning plate 755 drives the anti-slip pad 756 to squeeze the prepreg on the conveyor belt 73, and the prepreg is tightened on the conveyor belt 73. The conveyor belt 73 and the tensioning plate 755 can be used to drive the prepreg to move to the laser cutting knife for cutting, thereby improving the stability during transportation.

[0056] When the top plate 755 drives the anti-skid pad 756 to press one side of the prepreg against the belt, the transport belt 73 drives the top plate 755 to move, and the top plate 755 and the transport belt 73 drive the clamped prepreg to move, then the electronic slide 762 is opened, and the electric slider inside the electronic slide 762 drives the lifting plate 761 to move upward, and the lifting plate 761 drives the toggle column 764 to move through the connecting plate 763, and the toggle column 764 drives the toggle plate 765 to move. The toggle column 764 is made to pass through between the two groups of transport belts 73. When the prepreg passes through the toggle plate 765 during movement, the toggle plate 765 can flatten the part of the prepreg that is folded downward, thereby improving the accuracy of cutting. After the group of prepreg is flattened by the toggle plate 765, the lifting plate 761 can be controlled to move downward through the electronic slide 762 to lower the lifting plate 761 to a suitable height to prevent the lifting plate 761 from obstructing the transport belt 73 from driving the fixed plate 751 to move.

[0057] Working principle: The operator puts the prepreg to be processed into the feeding device 7, uses the feeding device 7 to move the prepreg to the bottom of the laser cutting assembly 4, and turns on the laser cutting assembly 4 to cut the prepreg. When the prepreg is placed on the feeding device 7, the electronic slide rail 67 is turned on, and the electric slider inside the electronic slide rail 67 drives the moving plate 61 to move, and the moving plate 61 drives the electric slide 62 to move, and the electric slide 62 drives the adjusting rod 63 to move, and the adjusting rod 63 drives the positioning rod 65 to move through the pressing frame 66, and the positioning rod 65 drives the smoothing roller 64 to move, so that the smoothing roller 64 can be adjusted to the specified position, and then the electric slide 62 is turned on to drive the pressing frame 66 to slide downward, and the pressing frame 6 6 drives the smoothing roller 64 to smooth the prepreg on the feeding device 7 to prevent the prepreg from being in an uneven state before cutting. The worker places the prepreg on the conveying belt 73, and then uses the tightening device 75 to fix the prepreg to be processed. The first conveying roller 71 and the second conveying roller 72 are turned on, and the conveying belt 73 can be driven to move by the first conveying roller 71 and the second conveying roller 72. The conveying belt 73 can drive the prepreg to move to the laser cutting component 4 for cutting. Since multiple sets of tightening devices 75 are installed on the conveying belt 73, multiple sets of tightening devices 75 can be used to perform assembly line cutting on the prepreg. The prepreg is placed on the conveying belt 73, and one side of the prepreg is positioned Under the fixed plate 751, the electric telescopic rod 754 is then turned on, and the tensioning plate 755 is pushed by the extension of the electric telescopic rod 754, and the tensioning plate 755 is pushed out from the rectangular opening 752. The tensioning plate 755 drives the anti-skid pad 756 to squeeze the prepreg on the conveying belt 73, and the prepreg is pressed against the conveying belt 73. The conveying belt 73 and the tensioning plate 755 can be used to drive the prepreg to move to the laser cutting knife for cutting. When the tensioning plate 755 drives the anti-skid pad 756 to press one side of the prepreg against the belt, the conveying belt 73 drives the tensioning plate 755 to move, and the tensioning plate 755 and the conveying belt 73 drive the clamped prepreg to move, and then the electronic slide 76 is turned on. 2. The electric slider inside the electronic slide 762 drives the lifting plate 761 to move upward, and the lifting plate 761 drives the toggle column 764 to move through the connecting plate 763, and the toggle column 764 drives the toggle plate 765 to move, so that the toggle column 764 passes through between the two groups of transport belts 73. When the prepreg passes through the toggle plate 765 during the movement, the toggle plate 765 can flatten the part of the prepreg that is folded downward to improve the cutting accuracy. After the group of prepreg is flattened by the toggle plate 765, the lifting plate 761 can be controlled to move downward through the electronic slide 762 to lower the lifting plate 761 to a suitable height to prevent the lifting plate 761 from hindering the transport belt 73 from driving the fixed plate 751 to move.

[0058] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A prepreg cutting device for glass fiber composite material manufacturing, characterized in that: include: A processing table (1), wherein a support plate (2) is fixedly connected to a side surface of the processing table (1), and an end of the support plate (2) away from the processing table (1) is fixedly connected to a limiting frame (3); A laser cutting assembly (4), one side of the laser cutting assembly (4) being fixedly connected to a reinforcement plate (5) via a bracket; A smoothing device (6), the smoothing device (6) is used to smooth the prepreg to be processed; A feeding device (7), through which the prepreg to be processed is transported to the laser cutting assembly (4); The support plates (2) are provided in two groups, and the two groups of support plates (2) are symmetrically distributed on both sides of the processing table (1); the reinforcement plate (5) is sleeved on the limit frame (3) and fixedly connected to the limit frame (3); the laser cutting assembly (4) is arranged inside the limit frame (3); one side of the smoothing device (6) is fixedly connected to the inner wall of the limit frame (3); and the bottom of the feeding device (7) is fixedly connected to the top of the processing table (1); Wherein, the smoothing device (6) comprises: A movable plate (61), the side of the movable plate (61) being fixedly connected to an electric slideway (62), the interior of the electric slideway (62) being slidably connected to an adjustment rod (63) via an electric slider; A smoothing roller (64), wherein a positioning rod (65) penetrates through the end of the smoothing roller (64), and both ends of the smoothing roller (64) are fixedly connected to a pressing frame (66) through a bracket.

2. The prepreg cutting device for manufacturing glass fiber composite materials according to claim 1, characterized in that: The electric slides (62) are provided in two groups, and the two groups of the electric slides (62) are symmetrically distributed on both sides of the movable plate (61). The outer side of the positioning rod (65) is rotatably connected to the smoothing roller (64) through a bearing, and the end of the adjustment rod (63) away from the electric slide (62) is fixedly connected to the top of the pressing frame (66).

3. The prepreg cutting equipment for manufacturing glass fiber composite materials according to claim 1, characterized in that: The smoothing device (6) further comprises an electronic slide rail (67), the interior of which is slidably connected to the movable plate (61) via an electric slider, and two groups of the electronic slide rails (67) are provided, the two groups of the electronic slide rails (67) are symmetrically distributed at both ends of the movable plate (61), and the side of the electronic slide rail (67) away from the movable plate (61) is fixedly connected to the inner wall of the limit frame (3).

4. The prepreg cutting device for manufacturing glass fiber composite materials according to claim 1, characterized in that: The feeding device (7) comprises a first conveying roller (71) and a second conveying roller (72), wherein the first conveying roller (71) and the second conveying roller (72) are connected to each other by a conveying belt (73), support frames (74) are installed at both ends of the first conveying roller (71) and the second conveying roller (72), a tightening device (75) is fixedly connected to one side of the conveying belt (73), and a shifting device (76) is provided on one side of the first conveying roller (71).

5. The prepreg cutting device for manufacturing glass fiber composite materials according to claim 4, characterized in that: The first conveying roller (71) and the second conveying roller (72) are both electric conveying rollers. The bottom of the support frame (74) is fixedly connected to the top of the processing table (1). The tightening device (75) is provided with multiple groups. The multiple groups of tightening devices (75) are evenly distributed on the conveying belt (73). The conveying belt (73) is provided with two groups.

6. The prepreg cutting device for manufacturing glass fiber composite materials according to claim 4, characterized in that: The tightening device (75) comprises a fixing plate (751), a rectangular opening (752) is formed on the top of the fixing plate (751), a positioning frame (753) is fixedly connected to the top of the fixing plate (751) near the rectangular opening (752), a tightening plate (755) is fixedly connected to the movable end of the electric telescopic rod (754) penetrating and fixedly connected to the top of the positioning frame (753), and a non-slip pad (756) is fixedly connected to the side of the tightening plate (755) away from the electric telescopic rod (754).

7. The prepreg cutting device for manufacturing glass fiber composite materials according to claim 6, characterized in that: One side of the fixing plate (751) is fixedly connected to the side of the transport belt (73), and one end of the electric telescopic rod (754) close to the tightening plate (755) passes through the rectangular opening (752).

8. The prepreg cutting device for manufacturing glass fiber composite materials according to claim 4, characterized in that: The toggle device (76) comprises a lifting plate (761), the end of the lifting plate (761) is slidably connected to an electronic slideway (762) via an electric slider, the top of the lifting plate (761) is fixedly connected to a connecting plate (763), one side of the connecting plate (763) is fixedly connected to a toggle column (764), and the outer side of the toggle column (764) is fixedly connected to a toggle plate (765).

9. The prepreg cutting device for manufacturing glass fiber composite materials according to claim 8, characterized in that: The bottom of the electronic slideway (762) is fixedly connected to the top of the processing table (1), and two groups of the electronic slideways (762) are provided. The two groups of the electronic slideways (762) are symmetrically distributed at both ends of the lifting plate (761). The connecting plates (763) are provided in two groups. The two groups of the connecting plates (763) are symmetrically distributed at both ends of the toggle column (764).

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