Prepreg slitting device

Abstract

The utility model provides a prepreg slitting device which comprises a supporting frame, a swinging arm, a slitting assembly and an adjusting assembly, and the swinging arm is arranged in a swinging mode relative to the supporting frame in the vertical direction; the slitting assembly comprises a knife rest rotating disc and at least two types of cutters, the knife rest rotating disc is arranged on the swing arm, the at least two types of cutters are arranged on the peripheral side of the knife rest rotating disc at intervals, and the knife rest rotating disc is used for selecting different cutters according to different types of prepreg rolls; the adjusting assembly is arranged between the supporting frame and the swing arm and used for adjusting the transverse position of the swing arm relative to the supporting frame. The utility model provides a prepreg slitting device which is used for solving the technical problems that the slitting cost of continuous fiber reinforced thermoplastic prepreg is high, the working procedure is complex, and the slitting requirements of different breadths are difficult to meet.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of composite material slitting processing, especially to a prepreg slitting device. BACKGROUND

[0002] The composite material formed by continuous fiber reinforced thermoplastic prepreg has high specific strength, specific stiffness, corrosion resistance and durability, and is applied more and more widely, for example, is applied to battery pack protection plates, battery boxes, truck fuel-saving aprons, thermoplastic lining plates of refrigerated vehicles and the like.

[0003] When the continuous fiber reinforced thermoplastic prepreg is compounded, multiple rolls of continuous fiber reinforced thermoplastic prepreg are spliced and compounded according to requirements. Since the width of the continuous fiber reinforced thermoplastic prepreg produced by each prepreg line is within a fixed range, when the required width cannot be met by splicing the prepreg within the fixed range, another width of continuous fiber reinforced thermoplastic prepreg or the existing continuous fiber reinforced thermoplastic prepreg needs to be slit to meet the required width before splicing and compounding. At present, the continuous fiber reinforced thermoplastic prepreg wound is usually unwound, slit and wound by using a slitting and rewinding device to be slit into the required width, or a new prepreg line of different specifications is ordered to meet the production of continuous fiber reinforced thermoplastic prepreg. The two methods not only have high production cost, but also have complex process, and it is difficult to meet the slitting requirements of continuous fiber reinforced thermoplastic prepreg of different widths with low production cost and process.

[0004] Therefore, it is urgent to solve the technical problems of high cost, complex process and difficulty in meeting the slitting requirements of continuous fiber reinforced thermoplastic prepreg of different widths. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of prepreg slitting device to solve the technical problems of high cost, complex process and difficulty in meeting the slitting requirements of continuous fiber reinforced thermoplastic prepreg of different widths.

[0006] To achieve the above purpose, the utility model provides a kind of prepreg slitting device, comprising:

[0007] support frame;

[0008] swing arm, the swing arm is set along vertical direction relative to the support frame swing;

[0009] slitting assembly, the slitting assembly includes tool rest turntable and at least two kinds of cutter, the tool rest turntable is set to the swing arm, the at least two kinds of cutter are set to the circumferential side of the tool rest turntable, and the tool rest turntable is used to select different cutter according to different types of prepreg roll;

[0010] An adjusting assembly is arranged between the support frame and the swing arm, and is used to adjust the transverse position of the swing arm relative to the support frame.

[0011] The pre-impregnated material slitting device can slit the pre-impregnated material roll, compared with a slitting and rewinding device, without the steps of unwinding, slitting and rewinding the continuous fiber reinforced thermoplastic pre-impregnated material roll, facilitating flexible adjustment of the width to be slitted, reducing the slitting process, and helping to reduce the slitting cost.

[0012] The pre-impregnated material slitting device can slit the pre-impregnated material roll, compared with a slitting and rewinding device, without the steps of unwinding, slitting and rewinding the continuous fiber reinforced thermoplastic pre-impregnated material roll, facilitating flexible adjustment of the width to be slitted, reducing the slitting process, and helping to reduce the slitting cost.

[0013] In a possible implementation, the adjusting assembly comprises:

[0014] A fixed shaft is arranged transversely on the support frame,

[0015] A sliding sleeve is rotationally connected to one end of the swing arm away from the slitting assembly, and the sliding sleeve is slidingly arranged on the outer surface of the fixed shaft, and the side wall of the sliding sleeve is provided with a connecting hole;

[0016] A first fastener is threadedly connected in the connecting hole, and one end of the first fastener extending into the connecting hole abuts against the fixed shaft.

[0017] In a possible implementation, the swing arm has a rotating hole, the sliding sleeve is rotationally arranged in the rotating hole, and the outer wall of the sliding sleeve is provided with a limiting piece abutting against the opposite sides of the swing arm.

[0018] In a possible implementation, the at least two cutters comprise a first cutter and a second cutter.

[0019] The first cutter comprises a disc shape, and the cutting edge of the first cutter is located on the outer surface of the first cutter.

[0020] The second cutter comprises a strip shape, and the cutting edge of the second cutter is located at one end of the second cutter.

[0021] In a possible implementation, the tool holder turntable has a first connecting portion and a second connecting portion arranged along the circumference of the tool holder turntable, the tool holder turntable is arranged on the swing arm through a second fastener, the first cutter is rotatably arranged on the first connecting portion, and the second cutter is fixedly arranged on the second connecting portion.

[0022] In a possible implementation, the prepreg slitting device further comprises at least one counterweight arranged on one end of the swing arm close to the slitting assembly.

[0023] In a possible implementation, the number of the counterweights is plural, the top of the swing arm is provided with a mounting column, and the counterweights are sleeved on the mounting column.

[0024] In a possible implementation, the prepreg slitting device further comprises a scale arranged on the support frame, and the scale is arranged in parallel with the fixed shaft.

[0025] In a possible implementation, one end of the swing arm away from the slitting assembly is further provided with an indicating needle, and the indicating needle points to the scale.

[0026] In a possible implementation, the support frame comprises two vertical plates and a cross beam connected between the two vertical plates, and two ends of the fixed shaft are connected to the two vertical plates respectively.

[0027] The prepreg slitting device provided by the utility model has the advantages that the adjusting assembly is arranged, the position of the slitting assembly in contact with the prepreg roll along the axial direction of the prepreg roll is adjusted conveniently, the slitting position is adjusted automatically according to the width requirement of the prepreg composite, the requirement for different widths during the compounding of the continuous fiber reinforced thermoplastic prepreg is met, the utility model is convenient and efficient to use, and manpower and material resources are saved.

[0028] The prepreg slitting device provided by the utility model has the advantages that the counterweight is arranged on one end of the swing arm close to the slitting assembly, the swing arm is swung downward automatically, the slitting assembly is pressed downward to slit the prepreg automatically, no additional driving force is needed, the energy consumption cost is low,

[0029] The prepreg slitting device provided by the utility model has the advantages that the prepreg slitting device is used for slitting the continuous fiber reinforced thermoplastic prepreg multiple times, no prepreg waste is caused during slitting, at least 5% of the continuous fiber reinforced thermoplastic prepreg is saved each time, and the production efficiency is improved.

[0030] In addition to the technical problems solved by the embodiments of the present application described above, the technical features constituting the technical solutions and the beneficial effects brought by these technical features, other technical problems solved by the pre-preg slitting device provided by the embodiments of the present application, other technical features included in the technical solutions and the beneficial effects brought by these technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0032] Figure 1 A schematic diagram of the three-dimensional structure of the pre-preg slitting device provided by the embodiments of the present application is shown in the figure.

[0033] Figure 2 Another schematic diagram of the three-dimensional structure of the pre-preg slitting device provided by the embodiments of the present application is shown in the figure.

[0034] Figure 3 The structure of A in Figure 2 The structure of B in

[0035] Figure 4 Another schematic diagram of the three-dimensional structure of the pre-preg slitting device provided by the embodiments of the present application is shown in the figure.

[0036] Figure 5 The structure of B in Figure 4

[0037] Explanation of reference signs:

[0038] 10 - support frame;

[0039] 11 - vertical plate;

[0040] 12 - cross beam;

[0041] 20 - swing arm;

[0042] 21 - rotating hole;

[0043] 22 - mounting column;

[0044] 23 - first swing arm;

[0045] 24 - second swing arm;

[0046] 25 - indicating needle;

[0047] ​30-Slitting component;

[0048] 31-Tool holder turntable;

[0049] 311 - First connecting part;

[0050] 312 - Second connecting part;

[0051] 32-Cut knife;

[0052] 321 - First cut;

[0053] 322 - Second cut;

[0054] 40 - Counterweight;

[0055] 50 - Adjustment component;

[0056] 51-Fixed shaft;

[0057] 52-Sliding sleeve;

[0058] 521 - Connecting hole;

[0059] 522 - Limiting component;

[0060] 53 - First fastener;

[0061] 60-scale ruler;

[0062] 70 - Second fastener. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions 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, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0064] When producing continuous fiber reinforced thermoplastic prepreg, if the required width for lamination cannot be met by splicing multiple rolls of prepreg within a fixed width range, the existing prepreg needs to be cut to meet the required width before splicing and lamination.

[0065] For example, an existing prepreg production line with a width of 850mm can produce prepreg widths between 750mm and 850mm. When a composite prepreg width of 1600mm is required, only two rolls of 800mm wide prepreg need to be produced and then spliced ​​together. However, when a prepreg width of 1200mm is required, the 850mm wide prepreg production line cannot meet the production requirements. In this case, either a rotary cutter is used to cut the 800mm continuous fiber reinforced thermoplastic prepreg into 400mm wide prepregs, which are then spliced ​​together with the 800mm wide continuous fiber reinforced thermoplastic prepregs, or a 450mm wide prepreg production line is added to produce 400mm wide continuous fiber reinforced thermoplastic prepregs, which are then spliced ​​together with the 800mm wide continuous fiber reinforced thermoplastic prepregs. Adding a slitting process would waste process costs and scrap material, while adding a new prepreg production line would have problems such as long cycle time and high cost.

[0066] In view of this, the present invention provides a prepreg slitting device that allows adjustment of the lateral position of the swing arm relative to the support frame via an adjustment component. This facilitates adjustment of the slitting position of the prepreg roll as needed, resulting in prepreg rolls of different widths. Simultaneously, the swing arm swings vertically, enabling the cutter to slit different types of prepreg rolls. The prepreg slitting process eliminates the need for unwinding-slitting-rewinding, reducing slitting steps. A single roll of continuous fiber-reinforced thermoplastic prepreg can be slitted multiple times, fully utilizing the remaining material for further slitting. This overcomes the problem of prepreg being difficult to splice and composite due to size limitations, reducing waste and achieving continuous slitting, thus helping to lower slitting costs.

[0067] The prepreg cutting device provided in the embodiments of this utility model is described below with reference to the accompanying drawings.

[0068] refer to Figure 1 , Figure 2 and Figure 3 As shown, this utility model provides a prepreg slitting device, including: a support frame 10, a swing arm 20, a slitting assembly 30 and an adjustment assembly 50, wherein the swing arm 20 is swayed relative to the support frame 10 in the vertical direction.

[0069] The slitting assembly 30 includes a blade holder turntable 31 and at least two types of cutters 32. The blade holder turntable 31 is disposed on the swing arm 20, and the at least two types of cutters 32 are spaced apart on the periphery of the blade holder turntable 31. The blade holder turntable 31 is used to select different cutters 32 according to different types of prepreg rolls.

[0070] An adjustment component 50 is disposed between the support frame 10 and the swing arm 20. The adjustment component 50 is used to adjust the lateral position of the swing arm 20 relative to the support frame 10.

[0071] This utility model provides a prepreg slitting device. By adjusting the component 50, the lateral position of the swing arm 20 relative to the support frame 10 can be adjusted, which facilitates adjusting the slitting position of the prepreg roll as needed to slit prepreg rolls into different widths. At the same time, by swinging the swing arm 20 along the vertical direction, the cutter 32 can slit prepreg rolls of different diameters. When slitting prepreg, there is no need to perform the unwinding-slitting-rewinding process, reducing the slitting process. A roll of continuous fiber-reinforced thermoplastic prepreg can be slit multiple times, making full use of the slitting residue for further slitting. This overcomes the problem that prepreg is difficult to splice and composite due to size and specification limitations, reduces waste of residue, achieves continuous slitting, and helps to reduce slitting costs.

[0072] The present invention provides a prepreg slitting device that can slit prepreg rolls. Compared with slitting and rewinding equipment, it eliminates the need for unwinding-slitting-rewinding steps on the wound continuous fiber reinforced thermoplastic prepreg rolls, making it easier to flexibly adjust the required slitting width, reducing slitting processes and helping to reduce slitting costs.

[0073] In one possible implementation method, refer to Figure 1 , Figure 2 and Figure 3 As shown, the adjustment component 50 includes: a fixed shaft 51, a sliding sleeve 52 and a first fastener 53. The fixed shaft 51 is horizontally arranged on the support frame 10. The sliding sleeve 52 is rotatably connected to the end of the swing arm 20 away from the cutting component 30, and the sliding sleeve 52 is slidably sleeved on the outer peripheral surface of the fixed shaft 51.

[0074] The sliding sleeve 52 has a connecting hole 521 on its side wall. The first fastener 53 is threaded into the connecting hole 521, and one end of the first fastener 53 extending into the connecting hole 521 abuts against the fixed shaft 51.

[0075] By adjusting the first fastener 53, the axial position of the sliding sleeve 52 on the fixed shaft 51 can be fixed or released, thereby adjusting the position of the swing arm 20 in cutting the prepreg roll. The sliding sleeve 52 is allowed to move axially along the fixed shaft 51, while the locking function of the first fastener 53 allows the sliding sleeve 52 to be fixed at the desired position, thus enabling the slitting assembly 30 to precisely adjust the slitting position of the prepreg roll.

[0076] In one possible implementation, the outer wall surface of the fixed shaft 51 has a recess, which may be used to extend one end of the first fastener 53 into the recess on the fixed shaft 51, thereby improving the stability of the first fastener 53 in fixing the axial position of the sliding sleeve 52 on the fixed shaft 51.

[0077] In one possible implementation, the fixed shaft 51 can be a smooth shaft, and lubricating oil is applied between the sliding sleeve 52 and the fixed shaft 51 to facilitate smooth sliding of the sliding sleeve 52 along the axial direction of the fixed shaft 51.

[0078] In one possible implementation, the connecting hole 521 is a threaded hole, and the first fastener 53 can be a screw, bolt, etc.

[0079] In one possible implementation, the swing arm 20 has a rotating hole 21, and the sliding sleeve 52 is rotatably disposed within the rotating hole 21. The outer wall of the sliding sleeve 52 has a limiting member 522, which abuts against opposite sides of the swing arm 20. The limiting member 522 serves to limit the swing arm 20, preventing it from moving along the axial direction of the sliding sleeve 52 and ensuring the axial position of the swing arm 20 on the sliding sleeve 52 is stable.

[0080] In one possible implementation, in order to ensure that the swing arm 20 can swing smoothly and without obstruction, a bearing is provided between the sliding sleeve 52 and the rotating hole 21 to improve the smoothness of the movement of the swing arm 20.

[0081] In one possible implementation, the limiting element 522 may be, for example, a retaining ring.

[0082] After adjusting the axial position of the sliding sleeve 52 on the fixed shaft 51, the limiting member 522 abuts against the opposite sides of the swing arm 20, fixing the axial position of the swing arm 20 on the fixed shaft 51. This prevents the swing arm 20 from moving axially relative to the fixed shaft 51 when the slitting assembly 30 slits the prepreg roll, thus ensuring the accuracy and stability of the slitting position of the prepreg roll by the slitting assembly 30.

[0083] The sliding sleeve 52 is rotatably disposed within the rotating hole 21, so that the swing arm 20 swings about the central axis of the sliding sleeve 52 as the center of rotation.

[0084] In one possible implementation method, refer to Figure 4 and Figure 5 As shown, at least two types of cutters 32 include a first cutter 321 and a second cutter 322; the first cutter 321 is disc-shaped, and the cutting edge of the first cutter 321 is located on the outer peripheral surface of the first cutter 321;

[0085] The first cutter 321 is disc-shaped and suitable for rotary cutting. It can provide uniform cutting force when rotating. The first cutter 321 is suitable for cutting prepreg of woven materials and has a good cutting effect on disordered fiber structures.

[0086] In one possible implementation, the second cutter 322 is strip-shaped, with the cutting edge of the second cutter 322 located at one end of the second cutter 322.

[0087] The second cutter 322 is suitable for cutting unidirectional fiber prepregs. Unidirectional fiber materials typically need to be cut along the fiber direction to maintain fiber integrity and the material's mechanical properties. The second cutter 322 provides efficient cutting capability for unidirectional fiber prepregs. The second cutter 322 maintains stable performance during prolonged cutting processes, making it suitable for continuous operation on production lines.

[0088] In this application, the slitting assembly 30 utilizes the different characteristics of disc-shaped and strip-shaped blades to meet various cutting needs. The first cutting blade 321 is suitable for rotary cutting, while the second cutting blade 322 is suitable for linear cutting, enabling diversified cutting of materials and meeting different processing requirements.

[0089] In one possible implementation, the tool holder turntable 31 has a first connecting portion 311 and a second connecting portion 312 arranged circumferentially along the tool holder turntable 31. The tool holder turntable 31 is mounted on the swing arm 20 by a second fastener 70. The first cutter 321 is rotatably mounted on the first connecting portion 311, and the second cutter 322 is fixedly mounted on the second connecting portion 312.

[0090] The first connecting part 311 and the second connecting part 312 enable the cutter holder turntable 31 to support two different types of cutters. The first connecting part 311 is used to mount the first cutter 321 and support its rotational movement, facilitating the first cutter 321's handling of complex woven materials. The second connecting part 312 provides a stable fixing point for the second cutter 322, suitable for mounting and securing it, thus meeting the requirements for the second cutter 322 when cutting unidirectional fiber materials. Through this combined structure, the slitting assembly 30 can achieve diverse cutting functions.

[0091] In one possible implementation, the first connecting portion 311 and the second connecting portion 312 are spaced 180° apart circumferentially along the tool holder turntable 31.

[0092] In one possible implementation, the center of the first cutter 321 is rotatably connected to the first connecting part 311 via a pivot, so that the first cutter 321 can rotate about its own central axis.

[0093] In one possible implementation, the second cutter 322 may be connected to the second connecting part 312 by a screw or bolt.

[0094] In one possible implementation, the second fastener 70 includes, but is not limited to, screws or bolts. When it is necessary to switch between the first cutter 321 and the second cutter 322, the second fastener 70 is loosened. At this time, the cutter holder turntable 31 can rotate relative to the swing arm 20 to switch between the use of the first cutter 321 and the second cutter 322. After the switch is completed, the second fastener 70 is tightened to fix the cutter holder turntable 31 and improve the stability of use.

[0095] In one possible implementation, the prepreg slitting device further includes at least one counterweight 40 disposed at one end of the swing arm 20 near the slitting assembly 30.

[0096] By setting the counterweight 40 at one end of the swing arm 20 close to the slitting assembly 30, the swing arm 20 automatically swings downward, so that the slitting assembly 30 automatically presses down to slit the prepreg without the need for additional driving force, saving manpower.

[0097] The counterweight 40 is used to balance the weight of the swing arm 20 and prevent the slitting assembly 30 from lifting automatically, so that the slitting assembly 30 remains in contact with the prepreg and slits the prepreg, ensuring the stability and accuracy of the slitting process.

[0098] In one possible implementation, there are multiple counterweights 40, and a mounting post 22 is provided on the top of the swing arm 20, with the counterweights 40 fitted onto the mounting post 22.

[0099] In one possible implementation, the number of counterweights 40 can be 1, 2, 3, or 4, etc.

[0100] In one possible implementation, the counterweight 40 has a through hole inside, and the counterweight 40 can be fixed by being sleeved on the mounting post 22 through the through hole.

[0101] In one possible implementation, the counterweight 40 can be a magnetic iron block. The counterweight 40 is magnetic, so that two adjacent counterweights 40 are magnetically attracted to each other, and the counterweight 40 is magnetically attracted to the swing arm 20, which helps to improve the stability of the counterweight 40 in use.

[0102] In one possible implementation method, refer to Figure 1 , Figure 2 and Figure 3 As shown, the prepreg slitting device also includes a scale 60, which is mounted on the support frame 10 and is parallel to the fixed shaft 51. The scale 60 is used to indicate the axial position of the sliding sleeve 52 on the fixed shaft 51, thus providing a good reference for indicating the cutting position of the slitting assembly 30.

[0103] In one possible implementation, the scale 60 is a ruler.

[0104] In one possible implementation, the end of the swing arm 20 away from the slitting assembly 30 also has an indicator needle 25 pointing toward the scale 60. This structure helps to indicate the distance the sliding sleeve 52 moves axially along the fixed shaft 51, thereby facilitating adjustment to a suitable slitting position to cut prepreg of appropriate width.

[0105] In one possible implementation method, refer to Figure 4 and Figure 5 As shown, the swing arm 20 includes a first swing arm 23 and a second swing arm 24 connected to each other, with an included angle between the first swing arm 23 and the second swing arm 24. The tool holder turntable 31 is rotatably disposed on the first swing arm 23, and the sliding sleeve 52 is rotatably connected to the second swing arm 24.

[0106] In one possible implementation, the first swing arm 23 and the second swing arm 24 can be connected by welding or by screws, and the relative position between the first swing arm 23 and the second swing arm 24 is fixed and will not change during operation.

[0107] In one possible implementation, the angle between the first swing arm 23 and the second swing arm 24 can be greater than 90°, for example, it can be 120°.

[0108] In one possible implementation, the support frame 10 includes two upright plates 11 and a crossbeam 12 connecting the two upright plates 11, with the two ends of the fixed shaft 51 connected to the two upright plates 11 respectively. This ensures that the fixed shaft 51 is securely mounted on the support frame 10 and can withstand the operating loads of the swing arm 20 and the sliding sleeve 52.

[0109] In one possible implementation, the two ends of the scale 60 are respectively connected to two vertical plates 11.

[0110] In one possible implementation, there can be multiple crossbeams 12. By connecting the crossbeams 12 between the two uprights 11, the overall rigidity and stability of the support frame 10 are increased, ensuring that the support frame 10 can withstand the forces generated during operation and providing the necessary mechanical stability.

[0111] By adjusting the position and angle of the swing arm 20, it can adapt to different working environments and material requirements, thus expanding the applicability of the prepreg cutting device provided by this utility model.

[0112] The swing arm 20 swings vertically, allowing the slitting assembly 30 to operate at different heights, thus adapting to prepregs of different thicknesses and winding diameters. As the slitting depth of the prepreg increases, the angle of the swing arm 20 can be flexibly changed to ensure effective slitting.

[0113] This utility model provides a prepreg slitting device. Taking the slitting of continuous fiber-reinforced thermoplastic prepreg as an example, during operation, the continuous fiber-reinforced thermoplastic prepreg is placed on the unwinding shaft. The prepreg slitting device is moved to one side of the unwinding shaft. By loosening the first fastener 53, the sliding sleeve 52 can move along the axial direction of the fixed shaft 51 to adjust the position of the slitting assembly 30 in contact with the prepreg roll along the axial direction of the prepreg roll. At the same time, the scale of the scale 60 corresponding to the swing arm 20 is observed until it is adjusted to the correct position. At a suitable width and position, under the weight of the counterweight 40 itself, the cutter 32 of the slitting assembly 30 remains in contact with the prepreg roll. As the prepreg rotates on the unwinding shaft, the cutter 32 slits the prepreg roll. Since the weight of the counterweight 40 is always present, as the slitting depth of the cutter 32 increases or the outer diameter of the prepreg roll decreases, the counterweight 40 automatically presses down on the swing arm 20, causing the swing arm 20 to gradually swing downward, ensuring that the cutter 32 remains in contact with the prepreg roll, thus achieving effective slitting of the prepreg roll.

[0114] The present invention provides a prepreg slitting device, which, by setting an adjustment component 50, facilitates the adjustment of the position of the slitting component 30 in contact with the prepreg roll along the axial direction of the prepreg roll, thereby realizing the automatic adjustment of the slitting position according to the width requirements of the prepreg composite. It can solve the requirements for different widths when continuously fiber reinforced thermoplastic prepregs are composited, and is convenient, efficient and saves manpower and material resources.

[0115] This utility model provides a prepreg slitting device that, by placing a counterweight 40 at one end of the swing arm 20 near the slitting assembly 30, enables the swing arm 20 to automatically swing downwards, causing the slitting assembly 30 to automatically press down and slit the prepreg. This eliminates the need for additional driving force and results in low energy consumption and costs.

[0116] This utility model provides a prepreg slitting device that enables continuous fiber reinforced thermoplastic prepreg to be slitted and reused multiple times, with no waste of slitting residue. Each slitting saves at least 5% of continuous fiber reinforced thermoplastic prepreg, thereby improving production efficiency.

[0117] In the description of this utility model, it should be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential", etc., used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the indicated position or component must have a specific orientation, or a specific structure and operation, and therefore should not be construed as a limitation of this utility model.

[0118] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0119] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0120] 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.

[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A prepreg slitting device, characterized in that, include: Support frame (10); A swing arm (20) is provided to swing vertically relative to the support frame (10); The slitting assembly (30) includes a blade holder turntable (31) and at least two types of cutters (32). The blade holder turntable (31) is disposed on the swing arm (20), and the at least two types of cutters (32) are spaced apart on the periphery of the blade holder turntable (31). The blade holder turntable (31) is used to select different cutters (32) according to different types of prepreg rolls. An adjustment component (50) is disposed between the support frame (10) and the swing arm (20), and the adjustment component (50) is used to adjust the lateral position of the swing arm (20) relative to the support frame (10).

2. The prepreg slitting device according to claim 1, characterized in that, The adjustment component (50) includes: A fixed shaft (51) is laterally mounted on the support frame (10). A sliding sleeve (52) is rotatably connected to one end of the swing arm (20) away from the cutting assembly (30), and the sliding sleeve (52) is slidably sleeved on the outer peripheral surface of the fixed shaft (51). A connecting hole (521) is provided on the side wall of the sliding sleeve (52). The first fastener (53) is threaded into the connecting hole (521), and one end of the first fastener (53) extending into the connecting hole (521) abuts against the fixed shaft (51).

3. The prepreg slitting device according to claim 2, characterized in that, The swing arm (20) has a rotating hole (21), and the sliding sleeve (52) is rotatably disposed in the rotating hole (21). The outer wall of the sliding sleeve (52) has a limiting member (522), and the limiting member (522) abuts against the opposite sides of the swing arm (20).

4. The prepreg slitting device according to claim 1, characterized in that, The at least two types of cutters (32) include a first cutter (321) and a second cutter (322); The first cutter (321) is disc-shaped, and the cutting edge of the first cutter (321) is located on the outer peripheral surface of the first cutter (321); The second cutter (322) is strip-shaped, and the cutting edge of the second cutter (322) is located at one end of the second cutter (322).

5. The prepreg slitting device according to claim 4, characterized in that, The tool holder turntable (31) has a first connecting part (311) and a second connecting part (312) arranged circumferentially along the tool holder turntable (31). The tool holder turntable (31) is mounted on the swing arm (20) by a second fastener (70). The first cutter (321) is rotatably mounted on the first connecting part (311), and the second cutter (322) is fixedly mounted on the second connecting part (312).

6. The prepreg slitting apparatus according to any one of claims 1-5, characterized in that, It also includes at least one counterweight (40) disposed at one end of the swing arm (20) near the cutting assembly (30).

7. The prepreg slitting device according to claim 6, characterized in that, The number of counterweights (40) is multiple, and the top of the swing arm (20) is provided with a mounting post (22), and the counterweights (40) are sleeved on the mounting post (22).

8. The prepreg slitting apparatus according to any one of claims 2-3, characterized in that, It also includes a scale (60), which is disposed on the support frame (10) and is arranged parallel to the fixed shaft (51).

9. The prepreg slitting apparatus according to claim 8, characterized in that, The end of the swing arm (20) away from the cutting assembly (30) also has an indicator needle (25) pointing to the scale (60).

10. The prepreg slitting apparatus according to any one of claims 2-3, characterized in that, The support frame (10) includes two upright plates (11) and a crossbeam (12) connecting the two upright plates (11), and the two ends of the fixed shaft (51) are respectively connected to the two upright plates (11).

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