Prepreg tape slitter edge granulation system

Abstract

The utility model provides a granulation system for slitter edges of prepreg tapes. The prepreg tape slitter edge granulation system comprises a heating mold, a cooling tank and a granulator. The heating mold is used for heating and melting the prepreg tape slitter edge to form molten waste. The cooling tank is arranged on the downstream of the heating mold in the material conveying direction and used for cooling and shaping the molten waste. The granulator is arranged on the downstream of the cooling tank in the material conveying direction and used for cutting off the cooled and shaped waste materials. The prepreg tape slitter edge granulation system is simple in structure, capable of directly granulating without crushing and granulating slitter edges in advance, low in equipment cost, economical, environment-friendly and high in re-granulation efficiency.

Description

Technical Field

[0001] This utility model generally relates to the technical field of continuous fiber composite materials, and more specifically to a prepreg tape waste edge granulation system. Background Technology

[0002] In the production of continuous fiber thermoreinforced plastic resin prepreg tape (hereinafter referred to as prepreg tape), in order to ensure the quality of the finished product, it is necessary to trim the edges on both sides, thus generating a large amount of waste edges during prepreg tape production. Currently, the recycling of prepreg tape waste edges mainly involves waste molding or regranulation. Since prepreg tape is a continuous fiber reinforced material, it must be pulverized before extrusion feeding and regranulation. However, due to its excellent mechanical properties and continuous fiber state, the pulverization process is quite difficult, placing high demands on the design of the pulverizer's cutter and internal bearings. Furthermore, since the waste edges are sheet-like materials, incomplete pulverization can easily lead to bridging effects during subsequent feeding processes, affecting the continuous and stable production of granulation.

[0003] Therefore, there is a need to provide a prepreg tape waste edge granulation system to at least partially solve the above problems. Utility Model Content

[0004] The description of this utility model introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, this utility model provides a prepreg tape waste edge granulation system. The prepreg tape waste edge granulation system includes:

[0006] A heating mold, the heating mold being used to heat and melt the waste edge of the prepreg tape to form molten waste;

[0007] A cooling tank, disposed downstream of the heating mold along the material conveying direction, is used to cool and shape the molten waste material.

[0008] A pelletizer is disposed downstream of the cooling tank along the conveying direction to cut the cooled and shaped waste material.

[0009] The prepreg tape waste edge granulation system of this utility model has a simple structure, can directly granulate without pre-crushing and granulating the waste edge, has low equipment cost, is economical and environmentally friendly, and has high granulation efficiency.

[0010] Optionally, the heating mold includes a first mold and a second mold, the first mold being closably connected to the second mold, and the first mold and the second mold being closed to form the mold cavity of the heating mold.

[0011] Optionally,

[0012] The dimensions of the mold cavity of the heating mold shrink along the material conveying direction; and / or

[0013] The heating mold is surrounded by heaters.

[0014] Optionally,

[0015] The first mold is hinged to the second mold via a hinge; and / or

[0016] The prepreg waste edge granulation system also includes a cylinder, with the first mold located above the second mold, and the cylinder connected to the first mold to control the opening and closing of the first mold.

[0017] Optionally, the heating mold has at least two cavities along an arrangement direction perpendicular to the feeding direction to simultaneously receive at least two prepreg tape waste edges.

[0018] Optionally, the heating mold further includes a mold opening that communicates with the mold cavity of the heating mold for shaping the molten waste.

[0019] Optionally,

[0020] The heating mold has at least two die openings arranged in a direction perpendicular to the material conveying direction.

[0021] The pelletizer includes at least two blades, and the number of the die cavities and the number of the blades correspond to the number of the die openings.

[0022] Optionally, the prepreg tape waste edge granulation system further includes:

[0023] At least one unwinding rack is disposed upstream of the heating mold along the conveying direction, the unwinding rack being used to load and unwind the roll of prepreg waste edge such that at least one prepreg waste edge enters the same heating mold; and

[0024] At least one guide shaft is disposed between the unwinding frame and the heating mold along the material conveying direction to conduct the waste edge of the unwound prepreg tape to the heating mold;

[0025] Optionally, the prepreg tape waste edge granulation system further includes:

[0026] A traction mechanism, disposed downstream of the cooling tank along the conveying direction, is used to traction the cooled and shaped waste material to the pelletizer; and

[0027] A feed cylinder is disposed downstream of the pelletizer along the conveying direction and is located below the pelletizer to receive the cut waste material.

[0028] Optionally, the die opening can be a circular hole, an elliptical hole, or a rectangular hole. Attached Figure Description

[0029] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings,

[0030] Figure 1 This is a schematic diagram of a prepreg tape waste edge granulation system according to a preferred embodiment of the present invention;

[0031] Figure 2 for Figure 1 A schematic diagram of the heating mold and its opening; and

[0032] Figure 3 This is a schematic diagram of the heating mold and its die opening in a prepreg granulation system with waste edge according to another preferred embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1: Waste edge of prepreg tape 2: Waste material after cooling and shaping

[0035] 3: Granulated Material 100: Prepreg Granulation System with Waste Edges

[0036] 110: Heating mold 111: First mold

[0037] 112: Second mold 113: Hinge

[0038] 114: Cylinder; 120: Mold opening

[0039] 130: Cooling tank; 140: Conducting shaft

[0040] 150: Traction mechanism; 160: Pelletizer

[0041] 161: Cutting tool; 170: Material barrel

[0042] 180: Unwinding frame; D1: Conveying direction

[0043] D2: Arrangement direction Detailed Implementation

[0044] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with embodiments of the present invention.

[0045] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art.

[0046] It should be understood that the terminology used herein is intended only to describe particular embodiments and is not intended to limit the invention. The singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0047] The ordinal numbers such as "first" and "second" used in this utility model are merely identifiers and do not have any other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of a "second component," and the term "second component" does not imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and similar expressions used in this utility model are for illustrative purposes only and are not intended to be limiting.

[0048] The specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, which show representative embodiments of the present invention and are not intended to limit the present invention.

[0049] refer to Figures 1 to 3 This invention provides a prepreg tape waste pelletizing system 100. The prepreg tape waste pelletizing system 100 includes a heating mold 110, a cooling tank 130, and a pelletizer 160. The heating mold 110 is used to heat and melt the prepreg tape waste 1 to form molten waste material. The cooling tank 130 is located downstream of the heating mold 110 along the conveying direction D1 to cool and shape the molten waste material. The pelletizer 160 is located downstream of the cooling tank 130 along the conveying direction D1 to cut the cooled and shaped waste material 2.

[0050] The prepreg tape waste edge granulation system of this utility model has a simple structure, can directly granulate without pre-crushing and granulating the waste edge, has low equipment cost, and high granulation efficiency.

[0051] refer to Figure 1 , Figure 2 and Figure 3 The prepreg tape waste pelletizing system 100 may include a heating mold 110, a cooling tank 130, a pelletizer 160, an unwinding frame 180, at least one transmission shaft 140, a traction mechanism 150, and a feed cylinder 170.

[0052] refer to Figure 1 The prepreg waste edge pelletizing system 100 may include an unwinding frame 180, two transmission shafts 140, a heating mold 110, a cooling tank 130, a traction mechanism 150, a pelletizer 160, and a feed cylinder 170 arranged sequentially along the conveying direction D1.

[0053] At least one unwinding rack 180 is used to load and unwind the roll of prepreg waste edge 1. The unwinding rack 180 is positioned upstream of the heating mold 110 along the conveying direction D1 to transport the prepreg waste edge 1 to the heating mold 110 via a conveyor shaft 140, so that at least one prepreg waste edge 1 enters the same heating mold 110. The conveyor shaft 140 is positioned between the unwinding rack 180 and the heating mold 110 along the conveying direction D1 to conduct the unwound prepreg waste edge 1 to the heating mold 110. The number of conveyor shafts 140 is not specifically limited and can be set according to the length of the roll to be unwound, the distance between the unwinding rack 180 and the heating mold 110, etc. The number of unwinding racks 180 can be one, two, or more, and can be adjusted according to the number of rolls of prepreg waste edge 1 to be processed, the specifications of the heating mold 110, and actual production needs. One unwinding rack 180 can load one roll of prepreg waste edge 1 so that one prepreg waste edge 1 enters the same heating mold 110. Two or more unwinding racks 180 can load two or more rolls of prepreg waste edge 1 so that two or more prepreg waste edges 1 enter the same heating mold 110, thereby improving work efficiency.

[0054] The heating mold 110 may be surrounded by heaters such as infrared heaters to achieve circumferential heating, uniform heating, and a maximum heating temperature of 400°C. In one specific embodiment, the temperature of the heating mold 110 can be controlled at 250°C.

[0055] The heating mold 110 may include a first mold 111, a second mold 112, and a die opening 120. The first mold 111 may be mechanically connected to the second mold 112 in an openable and closable manner. The first mold 111 and the second mold 112 are closed to form the mold cavity of the heating mold 110. The heating mold 110 can be opened and closed to facilitate the entry of the prepreg waste 1 into the mold cavity. The die opening 120 may communicate with the mold cavity of the heating mold 110 for shaping the molten waste. The materials of the first mold 111 and the second mold 112 may include stainless steel. The shape of the die opening 120 can be flexibly designed as needed, for example, it can be a round hole, an elliptical hole, or a rectangular hole to facilitate subsequent cutting by a cutting machine. For example, if the shape of the die opening 120 is a round hole, the molten waste after shaping will be cylindrical.

[0056] refer to Figure 2 and Figure 3 The first mold 111 can be located above the second mold 112. The first mold 111 can be hinged to the second mold 112 via a hinge 113. This facilitates the opening of the first mold 111 and the closing of the first mold 111 and the second mold 112.

[0057] refer to Figure 2 The dimensions of the heating mold 110 can shrink along the material conveying direction D1, and the heating mold 110 can be generally constructed as a frustoconical shape. The dimensions of the mold cavity of the heating mold 110 can shrink along the material conveying direction D1. In other words, the inner diameter at the inlet of the mold cavity of the heating mold 110 can be larger than the inner diameter at the outlet, preventing the waste edge 1 of the prepreg tape from blocking the inlet and outlet of the mold cavity of the heating mold 110, and ensuring that the waste material can smoothly enter the die opening 120. The dimensions of the mold cavity of the heating mold 110 can gradually shrink along the material conveying direction D1.

[0058] refer to Figure 3 The heating mold 110, arranged in a direction D2 perpendicular to the feeding direction D1, may have at least two cavities for simultaneously receiving at least two prepreg tape waste edges 1. These at least two cavities may be non-connected and operate independently of each other. Understandably, at least two unwinding racks 180 may be provided to load and unwind at least two rolls of prepreg tape waste edges 1. This allows for the simultaneous recycling and granulation of two or more prepreg tape waste edges 1, improving operational efficiency.

[0059] The prepreg pelletizing system 100 may further include a cylinder 114, with a first mold 111 located above a second mold 112. The cylinder 114 can be connected to the first mold 111 to control its opening and closing. The cylinder 114 may include a cylinder body and a piston rod. The piston rod of the cylinder 114 can be connected to the first mold 111 to facilitate movement of the first mold 111 along the height direction, thereby enabling convenient mold opening and closing. The cylinder body of the cylinder 114 can be connected to the second mold 112.

[0060] It should be noted that, although Figure 3 The heating mold 110 shown is generally constructed as a flat mold, but the dimensions of its internal cavity (not shown) can also be designed to shrink along the feeding direction D1.

[0061] refer to Figure 3 The heating mold 110 has at least two die openings 120 arranged along a direction D2 perpendicular to the material conveying direction D1. For example, the heating mold 110 can have three die openings 120, and correspondingly, it can have three mold cavities. A cooling tank 130 is located downstream of the heating mold 110 along the material conveying direction D1 to cool and shape the molten waste material. The cooling tank 130 can be a water cooling tank, using water as the cooling medium, which is convenient, economical, and environmentally friendly. Pressure rollers can be installed in the cooling tank to prevent the cooled and shaped waste material 2 from detaching from the cooling tank, thus achieving effective cooling and shaping.

[0062] A traction mechanism 150 is positioned downstream of the cooling tank 130 along the conveying direction D1 to pull the cooled and shaped waste material 2 to the pelletizer 160. The traction mechanism 150 can be traction rollers arranged vertically and horizontally at intervals. The cooled and shaped waste material 2 passes through the gap between the vertically arranged upper and lower traction rollers, facilitating traction and guidance. In this invention, the production speed can be controlled by adjusting the speed of the traction mechanism 150 (e.g., the rotational speed of the traction rollers).

[0063] A pelletizer 160 is positioned downstream of the traction mechanism 150 along the conveying direction D1 to cut the cooled and shaped waste material 2. The pelletizer 160 may include at least two cutters 161, the number of die cavities and the number of cutters 161 corresponding to the number of die openings 120. (Reference) Figure 1 The cutter 161 can be configured as a rotating cutter 161 to facilitate control of pelleting. In this invention, the length of the pellets 3 formed by pelleting can be controlled by controlling the speed of the cutter 161 (e.g., the rotational speed of the rotating cutter 161).

[0064] The feed cylinder 170 can be positioned downstream of the pelletizer 160 along the conveying direction D1. The feed cylinder 170 can be located below the pelletizer 160 to receive the cut waste material, i.e., the waste pellets 3.

[0065] The prepreg belt waste pelletizing system 100 may also include a controller for controlling the pelletizing process. For example, the controller may control one or more of the following: the unwinding speed of the unwinding frame 180, the traction speed of the traction mechanism 150, the pelletizing speed of the pelletizer 160, the conduction speed of the conduction roller, the heating temperature of the heating mold 110, and the cooling temperature of the cooling tank 130.

[0066] The following is a brief description of the granulation process using the prepreg granulation system 100 of this invention:

[0067] The prepreg waste edge 1 is loaded onto the unwinding position of the unwinding frame 180, unwound, and guided through the guide roller into the mold cavity of the heating mold 110. The prepreg waste edge 1 is heated and melted to form molten waste material. It is shaped and output from the die 120 and enters the cooling tank 130 for cooling and shaping. Under the action of the traction mechanism 150, it moves along the conveying direction D1. The production speed is controlled by controlling the speed of the traction mechanism 150 (e.g., the rotation speed of the traction roller). The cooled and shaped waste material 2 enters the pelletizer 160 to cut the waste material. The length of the pellets 3 formed by pelletizing can be controlled by controlling the speed of the cutter 161 (e.g., the rotation speed of the rotating cutter 161). The pellets 3 enter the feed cylinder 170 to complete the waste edge pelletizing.

[0068] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Terms such as “set” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0069] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this utility model to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A prepreg granulation system with waste edges, characterized in that, The prepreg belt waste edge granulation system includes: A heating mold, the heating mold being used to heat and melt the waste edge of the prepreg tape to form molten waste; A cooling tank, disposed downstream of the heating mold along the material conveying direction, is used to cool and shape the molten waste material. A pelletizer is disposed downstream of the cooling tank along the conveying direction to cut the cooled and shaped waste material.

2. The prepreg granulation system with waste edge as described in claim 1, characterized in that, The heating mold includes a first mold and a second mold, the first mold being closable to the second mold, and the first mold and the second mold being closed to form the mold cavity of the heating mold.

3. The prepreg granulation system with waste edge as described in claim 2, characterized in that, The dimensions of the mold cavity of the heating mold shrink along the material conveying direction; and / or The heating mold is surrounded by heaters.

4. The prepreg granulation system with waste edge as described in claim 2, characterized in that, The first mold is hinged to the second mold via a hinge; and / or The prepreg waste edge granulation system also includes a cylinder, with the first mold located above the second mold, and the cylinder connected to the first mold to control the opening and closing of the first mold.

5. The prepreg granulation system with waste edge as described in claim 2, characterized in that, The heating mold has at least two cavities arranged in a direction perpendicular to the material conveying direction to simultaneously receive at least two waste edges of prepreg tape.

6. The prepreg granulation system with waste edge as described in claim 5, characterized in that, The heating mold also includes a mold opening that communicates with the mold cavity of the heating mold for shaping the molten waste material.

7. The prepreg granulation system with waste edge as described in claim 5 or 6, characterized in that, The heating mold has at least two die openings arranged in a direction perpendicular to the material feeding direction, and the pelletizer includes at least two cutters. The number of die cavities and the number of cutters correspond to the number of die openings.

8. The prepreg tape waste edge granulation system according to any one of claims 1-5, characterized in that, The prepreg belt waste edge granulation system also includes: At least one unwinding rack is disposed upstream of the heating mold along the conveying direction, the unwinding rack being used to load and unwind the roll of prepreg waste edge such that at least one prepreg waste edge enters the same heating mold; and At least one guide shaft is disposed between the unwinding frame and the heating mold along the feeding direction to conduct the unwound waste edge of the prepreg tape to the heating mold.

9. The prepreg granulation system with waste edge according to any one of claims 1-5, characterized in that, The prepreg belt waste edge granulation system also includes: A traction mechanism, disposed downstream of the cooling tank along the conveying direction, is used to traction the cooled and shaped waste material to the pelletizer; and A feed cylinder is disposed downstream of the pelletizer along the conveying direction and is located below the pelletizer to receive the cut waste material.

10. The prepreg granulation system with waste edge as described in claim 6, characterized in that, The die opening can be round, elliptical, or rectangular.

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