Continuous treatment equipment for hot melting of prepreg

Abstract

The utility model discloses prepreg hot melting continuous treatment equipment which comprises a machine base, a connecting frame is arranged on one side of the machine base, and a glue recycling mechanism used for controlling the glue extruding force of prepreg is arranged on one side of the connecting frame. A first drying oven, a second drying oven, a third drying oven and a fourth drying oven which are used for carrying out heat treatment on the prepreg are sequentially arranged on the machine base; the first drying oven, the second drying oven, the third drying oven and the fourth drying oven are the same in structure, the glue extruding and recycling mechanism comprises a rack, the rack is arranged on one side of the connecting frame, a glue extruding roller is arranged in the rack, and a pressure roller capable of being longitudinally adjusted is arranged in the position, on the upper side of the glue extruding roller, of the rack; a central shaft of the glue extruding roller is connected with an output shaft of a driving motor, the driving motor is arranged on the surface of one side of the rack, the glue extruding force on the prepreg is controlled, the conveying path of the prepreg is increased, and the heat treatment effect on the prepreg is improved.

Description

Technical Field

[0001] This utility model relates to prepreg processing technology, and in particular to a prepreg hot-melt continuous processing equipment. Background Technology

[0002] Prepreg is the raw material for manufacturing composite components. It is laid in layers of a certain number of layers and cured to form a composite framework. Prepreg manufacturing is divided into solution method and hot-melt method. The solution method involves immersing the reinforcing fiber fabric in a resin solution. After extrusion and impregnation, the prepreg undergoes a post-treatment process to evaporate the solvent and set the shape. This process consists of four ovens. The first oven's main function is to remove the solvent by heating. The second and third ovens are the control stages of the prepreg post-treatment process, mainly to ensure the complete evaporation of residual solvent in the resin solution and to allow the resin solution to undergo a partial curing reaction, changing from an effusive state to a semi-gel state. The fourth oven further heat-exchanges the resin in the prepreg and appropriately cools it to adapt to the temperature environment of the operating room outside the oven.

[0003] Currently, after the prepreg is impregnated, the extrusion force cannot be controlled during the extrusion process, making it impossible to extrude excess adhesive, which affects the subsequent drying efficiency. At the same time, it is impossible to increase the drying stroke path during drying, which reduces the drying effect. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a continuous hot-melt processing device for prepreg, which solves the problem that in the current process after the prepreg is impregnated, the extrusion force cannot be controlled, and excess glue cannot be squeezed out, which affects the subsequent drying efficiency. At the same time, it cannot increase the drying stroke path during drying, which reduces the drying effect.

[0005] To solve the above-mentioned technical problems, this utility model provides: a prepreg hot-melt continuous processing equipment, including a machine base, a connecting frame on one side of the machine base, and an adhesive recovery mechanism for controlling the extrusion force of the prepreg on one side of the connecting frame. A first oven, a second oven, a third oven, and a fourth oven for heat treatment of the prepreg are sequentially arranged on the machine base; the first oven, the second oven, the third oven, and the fourth oven have the same structure. The adhesive recovery mechanism includes a frame, which is arranged on one side of the connecting frame. An extrusion roller is arranged inside the frame, and a longitudinally adjustable pressure roller is arranged inside the frame above the extrusion roller. The central axis of the extrusion roller is connected to the output shaft of a drive motor, and the drive motor is arranged on one side surface of the frame.

[0006] Preferably, the pressure roller is rotatably mounted inside the mounting frame, which is located inside the machine frame. A top plate is also provided on the top of the machine frame, and an electric push rod is provided on the top plate. One end of the piston rod of the electric push rod is connected to the mounting frame. By extending and retracting the electric push rod, the height of the pressure roller can be adjusted, thereby adjusting the extrusion force.

[0007] Preferably, a collection box is provided inside the frame on the lower side of the extrusion roller to collect the extruded adhesive.

[0008] Preferably, the bottom of the collection box is symmetrically provided with guide ramps on both sides, and the bottom of the collection box is also provided with a discharge pipe to facilitate the guidance and discharge of the adhesive liquid.

[0009] Preferably, the first drying oven includes a box body, which is mounted on a machine base. A heating fan is provided on one side of the box body, a feed inlet is provided on one side of the box body, and a discharge outlet is provided on the other side of the box body, enabling the prepreg to be introduced and exported.

[0010] Preferably, a guide roller is provided inside the feed inlet, and a lower tension roller is alternately rotated inside the box on one side of the guide roller, which can stably convey the prepreg at the bottom of the box.

[0011] Preferably, a central conveying roller is rotatably arranged in the middle of the box, and a central tensioning roller is rotatably arranged in the box on one side of the central conveying roller, which can stably convey the prepreg in the middle of the box.

[0012] Preferably, an upper conveying roller is rotatably installed in the upper part of the box body, and the upper conveying roller is arranged horizontally with the discharge port, which can convey the prepreg material in the upper part of the box body.

[0013] The beneficial effects of this utility model are:

[0014] 1. In the process of conveying prepreg, this utility model controls the extrusion force of the prepreg, which facilitates the rapid extrusion of excess adhesive from the prepreg and allows for the centralized collection of adhesive for subsequent use.

[0015] 2. This utility model enables the prepreg to be conveyed in a zigzag pattern within the first, second, third, and fourth drying ovens, increasing the conveying path of the prepreg and improving the heat treatment effect on the prepreg. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the medium-adhesive recycling mechanism of this utility model;

[0018] Figure 3This is a half-sectional structural diagram of the material collection box in this utility model;

[0019] Figure 4 This is a first-view structural diagram of the first oven in this utility model;

[0020] Figure 5 This is a schematic diagram of the second perspective structure of the first oven in this utility model;

[0021] Figure 6 This is a schematic diagram of a half-section of the first oven in this utility model;

[0022] In the diagram: 1. Connecting frame, 2. Adhesive recovery mechanism, 3. First drying oven, 4. Second drying oven, 5. Third drying oven, 6. Fourth drying oven, 7. Machine base, 21. Drive motor, 22. Collection box, 23. Extrusion roller, 24. Pressure roller, 25. Mounting frame, 26. Machine frame, 27. Electric push rod, 28. Top plate, 29. Guide ramp, 30. Discharge pipe, 301. Heating fan, 302. Box body, 303. Feed inlet, 304. Discharge outlet, 305. Guide roller, 306. Lower tension roller, 307. Middle conveying roller, 308. Middle tension roller, 309. Upper conveying roller. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All directional indicators (such as up, down, left, right, front, back, etc.) in the present utility model are only used to explain the relative positional relationship and movement of each component in a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indicator will also change accordingly.

[0024] Please see Figure 1 as well as Figure 2 A continuous hot-melt processing device for prepreg includes a base 7, a connecting frame 1 on one side of the base 7, and an adhesive recovery mechanism 2 for controlling the extrusion force of the prepreg on one side of the connecting frame 1. A first oven 3, a second oven 4, a third oven 5, and a fourth oven 6 for heat treatment of the prepreg are arranged sequentially on the base 7. The first oven 3, the second oven 4, the third oven 5, and the fourth oven 6 have the same structure. The adhesive recovery mechanism includes a frame 26, which is located on one side of the connecting frame 1. An extrusion roller 23 is arranged inside the frame 26. A longitudinally adjustable pressure roller 24 is arranged inside the frame 26 above the extrusion roller 23. The central axis of the extrusion roller 23 is connected to the output shaft of a drive motor 21, which is located on one side surface of the frame 26.

[0025] The pressure roller 24 is rotatably mounted inside the mounting frame 25, which is located inside the machine frame 26. The top of the machine frame 26 is also provided with a top plate 28, and an electric push rod 27 is provided on the top plate 28. One end of the piston rod of the electric push rod 27 is connected to the mounting frame 25. By extending and retracting the electric push rod 27, the height of the pressure roller 24 can be adjusted, thereby adjusting the extrusion force.

[0026] First, the prepreg is passed between the pressure roller 24 and the extrusion roller 23. The mounting frame 25 is moved longitudinally by controlling the lifting and lowering of the electric push rod 27. The mounting frame 25 drives the pressure roller 24 to move and make the pressure roller 24 fit with the prepreg. The pressure of the adhesive can be adjusted by adjusting the longitudinal position of the pressure roller 24. Then, the extrusion roller 23 is driven to rotate by the drive motor 21. At the same time, the pressure roller 24 rotates in the mounting frame 25 under the action of friction. The extrusion roller 23 extrudes the excess adhesive. The extruded prepreg is transported to the first oven 3. The first oven 3 is used to remove the solvent. The second oven 4 and the third oven 5 are used to allow the residual solvent in the adhesive to continue to evaporate completely. At the same time, the resin adhesive undergoes a partial curing reaction, changing from an organic state to a semi-gel state. Then, the resin is further heat-exchanged and appropriately cooled in the fourth oven 6 to adapt to the temperature of the operating room outside the oven.

[0027] The temperature range of the first oven 3 in this application is 80℃→120℃, the temperature range of the second oven 4 and the third oven 5 is 85℃-130℃, and the temperature range of the fourth oven 6 is 50℃-60℃.

[0028] Please see Figure 3 A collection box 22 is installed inside the frame 26 below the extrusion roller 23 to collect the extruded adhesive. The bottom of the collection box 22 is symmetrically provided with guide ramps 29 on both sides, and a discharge pipe 30 is also provided at the bottom of the collection box 22. When the adhesive drips into the collection box 22, the guide ramps 29 concentrate and guide the adhesive, and then discharge it through the discharge pipe 30, which facilitates the guidance and discharge of the adhesive.

[0029] Please see Figures 4-6The first drying oven 3 includes a box body 302, which is mounted on a base 7. A heating fan 301 is mounted on one side of the box body 302. A feed inlet 303 is mounted on one side of the box body 302, and a discharge outlet 304 is mounted on the other side of the box body 302, which can introduce and discharge prepreg. A guide roller 305 is mounted inside the feed inlet 303. A lower tension roller 306 is rotated alternately inside the box body 302 on one side of the guide roller 305, which can stably convey the prepreg at the bottom of the box body 302. A middle conveying roller 307 is rotated in the middle of the box body 302. A middle tension roller 308 is rotated in the box body 302 on one side of the middle conveying roller 307, which can stably convey the prepreg in the middle of the box body 302. An upper conveying roller 309 is rotated in the upper part of the box body 302. The upper conveying roller 309 is arranged horizontally with the discharge outlet 304, which can convey the prepreg in the upper part of the box body 302.

[0030] When the prepreg is conveyed to the lower tension roller 306 by the guide roller 305, the prepreg is tensioned by the lower tension roller 306, and then conveyed by the middle conveyor roller 307. The prepreg is then conveyed to the upper conveyor roller 309 by the middle tension roller 308. The upper conveyor roller 309 conveys the prepreg in the upper part of the housing 302, and then removes the prepreg through the discharge port 304. At the same time, the heating fan 301 delivers hot air into the housing 302 to heat treat the prepreg. The prepreg moves in a zigzag pattern in the housing 302, which increases the movement stroke and improves the heat treatment effect.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuous hot-melt processing device for prepregs, characterized in that: The machine includes a base (7), a connecting frame (1) on one side of the base (7), and a glue extraction and recycling mechanism (2) for controlling the glue extraction force of the prepreg on one side of the connecting frame (1). A first oven (3), a second oven (4), a third oven (5), and a fourth oven (6) for heat treatment of the prepreg are arranged sequentially on the base (7). The first oven (3), the second oven (4), the third oven (5), and the fourth oven (6) have the same structure. The glue extraction and recycling mechanism includes a frame (26), which is located on one side of the connecting frame (1). A glue extraction roller (23) is arranged inside the frame (26). A longitudinally adjustable pressure roller (24) is arranged inside the frame (26) above the glue extraction roller (23). The central axis of the glue extraction roller (23) is connected to the output shaft of a drive motor (21). The drive motor (21) is located on one side of the surface of the frame (26).

2. The prepreg hot-melt continuous processing equipment according to claim 1, characterized in that: The pressure roller (24) is rotatably mounted in the mounting frame (25), which is located in the frame (26). The top of the frame (26) is also provided with a top plate (28), and an electric push rod (27) is provided on the top plate (28). One end of the piston rod of the electric push rod (27) is connected to the mounting frame (25).

3. The prepreg hot-melt continuous processing equipment according to claim 1, characterized in that: A collection box (22) is provided inside the frame (26) on the lower side of the extrusion roller (23).

4. The prepreg hot-melt continuous processing equipment according to claim 3, characterized in that: The bottom of the collection box (22) is symmetrically provided with guide ramps (29) on both sides, and the bottom of the collection box (22) is also provided with a discharge pipe (30).

5. The prepreg hot-melt continuous processing equipment according to claim 1, characterized in that: The first oven (3) includes a box body (302), which is mounted on a base (7). A heating fan (301) is provided on one side of the box body (302), a feed inlet (303) is provided on one side of the box body (302), and a discharge outlet (304) is provided on the other side of the box body (302).

6. The prepreg hot-melt continuous processing equipment according to claim 5, characterized in that: A guide roller (305) is provided inside the feed inlet (303), and a lower tension roller (306) is alternately rotated inside the box (302) on one side of the guide roller (305).

7. A prepreg hot-melt continuous processing equipment according to claim 5 or 6, characterized in that: A central conveying roller (307) is rotatably arranged in the middle of the housing (302), and a central tensioning roller (308) is rotatably arranged in the housing (302) on one side of the central conveying roller (307).

8. The prepreg hot-melt continuous processing equipment according to claim 7, characterized in that: The upper part of the box (302) is rotatably equipped with an upper conveying roller (309), which is arranged horizontally with the discharge port (304).

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