Preparation device of storage-resistant low-temperature curing epoxy resin prepreg

Abstract

The utility model discloses a storage-resistant low-temperature curing epoxy resin prepreg preparation device which comprises a bottom layer frame, a plurality of supporting columns are fixed to the top of the bottom layer frame in a cross symmetry mode, the top ends of the supporting columns are fixedly connected with a first isolation bin, and electric lifting seats are assembled to the top of the first isolation bin in a left-right symmetry and embedded mode. A second isolation bin is fixedly connected to the output end of the top of the electric lifting seat, horizontal sliding plates are fixedly connected to the interiors of the opposite sides of the first isolation bin and the second isolation bin correspondingly, covering and pressing belts are slidably matched with the outer sides of the horizontal sliding plates correspondingly, and semicircular cutters are symmetrically erected in the middles of the opposite sides of the covering and pressing belts in the front-back direction; the opposite sides of the semicircular cutters are horizontally attached to the side edge of the covering and pressing belt and are in sliding fit with the covering and pressing belt, opposite attaching, pressing and molding are carried out on the prepreg film, the two side faces of the prepreg film can be comprehensively extruded and attached, smooth molding and horizontal linear conveying are kept for a long time, and then positioning and slitting operation is carried out.

Description

Technical Field

[0001] This utility model relates to the field of epoxy resin prepreg preparation technology, and in particular to a preparation device for a storage-resistant, low-temperature curing epoxy resin prepreg. Background Technology

[0002] Prepregs are composites of resin and reinforcing fibers, serving as crucial intermediate materials in the preparation of resin-based composites. Composites manufactured using prepreg technology exhibit precise resin content and stable product quality, making it a preferred choice for many critical components. Based on curing temperature, prepregs can be categorized into high-temperature curing, medium-temperature curing, and low-temperature curing prepregs. Low-temperature curing composites offer advantages such as lower curing temperatures, less internal stress during curing, and lower manufacturing costs. Furthermore, the mechanical properties and heat resistance of the composites can be improved through post-demolding high-temperature post-treatment processes, representing a significant development direction for low-cost composite manufacturing technology. Antenna hoods are frequently made from this material.

[0003] However, the process of preparing low-temperature curing composite materials using prepreg is relatively complex, and the control of time and temperature is quite strict. In the common prepreg preparation process, the roll pressing and winding operation often uses opposing rollers to assist in pressing and limit the traction and winding. During the process, the prepreg is directly exposed to the external environment, and dust and other contaminants can easily adhere and cause large temperature fluctuations. In addition, the prepreg film between the rollers is prone to vibration. When cutting the edges, uneven force can easily lead to continuous cut marks on the cut edges, which are not smooth enough. Furthermore, the prepreg has a certain elastic recovery ability. The contact surface of the roll pressing is narrow and the rolling time is short, which can easily lead to unevenness on the sides of the prepreg film. Utility Model Content

[0004] The purpose of this invention is to provide a device for preparing a storage-resistant, low-temperature curing epoxy resin prepreg, which can press and shape the prepreg film in opposite directions, so that both sides can be fully compressed and adhered and kept smooth for a longer period of time, avoiding the problem of unevenness caused by the two sides rebounding after pressing, and avoiding the problem of continuous cuts caused by the prepreg film being suspended and vibrating.

[0005] To achieve the above objectives, a preparation apparatus for a storage-resistant, low-temperature curing epoxy resin prepreg is provided, comprising: a bottom frame, wherein a plurality of pillars are symmetrically fixed to the top of the bottom frame in a cross shape, a first isolation chamber is fixedly connected to the top of each pillar, an electric lifting seat is symmetrically fitted to the top of the first isolation chamber, a second isolation chamber is fixedly connected to the top output end of the electric lifting seat, isolation rings are symmetrically fitted to the outer edges of the left and right sides of the second and first isolation chambers, and the upper and lower opposite sides of the isolation rings are fixedly connected by elastic cloth, a horizontal sliding plate is fixedly connected inside the opposite sides of the first and second isolation chambers, a pressure belt is slidably fitted to the outer side of each horizontal sliding plate, pulleys are fitted to the left and right sides of each pressure belt, and bushings are rotatably fitted to the front and rear ends of each pulley, the opposite sides of each bushing extending into the inner walls of the first and second isolation chambers and fixedly connected to them, wherein the middle The bushings at the left rear of the horizontal slide are all replaced with servo motors. The front output end of the servo motor is fixedly connected to the pulley. Semi-circular cutters are symmetrically mounted on the middle of the opposite side of the pressing belt. The lower part of the opposite side of the semi-circular cutter is fixedly connected to the first isolation chamber. The opposite side of the semi-circular cutter is horizontally attached to the side of the pressing belt and slides with it. By setting up a tracked pressing belt, in conjunction with the horizontal slide and pulley, the prepreg film is pressed and shaped in opposite directions, so that both sides can be fully squeezed and attached and kept smooth for a long time, avoiding the problem of unevenness caused by the two sides rebounding after pressing. At the same time, it is linearly conveyed in the planar pressing state, and the semi-circular cutter is used to cut the prepreg film by horizontally attaching to the two sides of the pressing belt. The prepreg film in the pressing state can maintain a horizontal and stable linear feed, avoiding the problem of continuous cuts caused by the prepreg film being suspended and vibrating.

[0006] According to the apparatus for preparing a storage-resistant, low-temperature curing epoxy resin prepreg, a discharge cylinder is vertically mounted below the right side of each semi-circular cutter, and the discharge cylinder extends downwards to the bottom of the first isolation chamber. This discharges the cut-off scrap material outside the isolation chamber, preventing its accumulation and potential blockage.

[0007] According to the aforementioned apparatus for preparing a storage-resistant, low-temperature curing epoxy resin prepreg, a recycling bin is mounted directly below each of the discharge cylinders. An annular base frame is fitted around the bottom of each recycling bin, and a rotating bracket extends and is fixed to the upper part of the opposite side of each annular base frame. The top of each rotating bracket is fitted and fixed to a first isolation chamber. This allows for the centralized collection of cut-off corner strips while facilitating the stable mounting of the recycling bins.

[0008] According to the apparatus for preparing a storage-resistant, low-temperature curing epoxy resin prepreg, the isolation ring is designed with corrugations in the left and right directions and is made of thermal insulation material. This facilitates its adaptable extension and bending for sealing connection with other processes.

[0009] According to the apparatus for preparing a storage-resistant, low-temperature curing epoxy resin prepreg, the bottom surface of the bottom frame is covered with an elastic rubber pad. This pad allows for adaptive deformation and coverage of dust and other impurities on the placement surface when the container is placed horizontally, maintaining overall stability.

[0010] According to the apparatus for preparing a storage-resistant, low-temperature curing epoxy resin prepreg, both the upper and lower surfaces of the horizontal sliding plate are covered with a sliding film, which corresponds to and slides in contact with the pressure belt. This reduces the coefficient of friction between the pressure belt and the horizontal sliding plate during continuous operation.

[0011] According to the apparatus for preparing a storage-resistant, low-temperature curing epoxy resin prepreg, the servo motors are electrically coupled with a synchronization control unit. This ensures that the two pressure belts maintain the same conveying speed, avoiding force differences between the upper and lower sides.

[0012] According to the apparatus for preparing a storage-resistant, low-temperature curing epoxy resin prepreg, an anti-adhesion film is provided on the outer surface of the pressing belt to prevent adhesion problems during horizontal bonding and pressing.

[0013] The above-mentioned solution has the following beneficial effects:

[0014] In this invention, a tracked pressing belt, in conjunction with a horizontal sliding plate and pulleys, is used to press and shape the prepreg film in opposite directions. This allows both sides to be fully compressed and adhered, maintaining a smooth shape for a longer period. This avoids the problem of the prepreg film springing back after pressing, resulting in unevenness. Simultaneously, the film is linearly conveyed in a planar pressing state, and a semi-circular cutter is used to trim the edges of the prepreg film by horizontally pressing the edges of the pressing belt. The prepreg film in the pressing state can maintain a stable linear feed, avoiding the problem of continuous cuts caused by vibration due to the prepreg film being suspended in the air.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a schematic diagram showing the distribution of the first isolation chamber and the second isolation chamber in the preparation device of a storage-resistant low-temperature curing epoxy resin prepreg according to this utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure of the pressure belt in the preparation device of a storage-resistant low-temperature curing epoxy resin prepreg according to this utility model.

[0019] Figure 3 This is a schematic diagram showing the distribution of the semi-circular cutter and the material feeding bucket in the preparation device of a storage-resistant low-temperature curing epoxy resin prepreg according to this utility model.

[0020] Figure 4 This is a schematic diagram of the overall apparatus for preparing a storage-resistant, low-temperature curing epoxy resin prepreg according to the present invention.

[0021] Legend:

[0022] 1. Bottom frame; 2. Support column; 3. First isolation chamber; 4. Electric lifting seat; 5. Second isolation chamber; 6. Isolation ring sleeve; 7. Horizontal sliding plate; 8. Covering belt; 9. Bushing; 10. Servo motor; 11. Semi-circular cutter; 12. Drop cylinder; 13. Recycling bin; 14. Annular base frame; 15. Rotating bracket. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figures 1-4 This utility model provides a device for preparing a storage-resistant, low-temperature curing epoxy resin prepreg, comprising: a bottom frame 1, the bottom surface of which is covered with an elastic pad; several pillars 2 are symmetrically fixed to the top of the bottom frame 1 in a cross shape; a first isolation chamber 3 is fixedly connected to the top of the pillars 2; an electric lifting seat 4 is symmetrically fitted to the top of the first isolation chamber 3; a second isolation chamber 5 is fixedly connected to the top output end of the electric lifting seat 4; isolation rings 6 are symmetrically fitted to the outer edges of the left and right sides of the second isolation chamber 5 and the first isolation chamber 3; the upper and lower opposite sides of the isolation rings 6 are fixedly connected by elastic cloth; the isolation rings 6 adopt a corrugated folding design in the left and right directions and are made of heat-insulating material to provide semi-enclosed isolation for the rolling environment and reduce the intensity of dust pollution.

[0025] Horizontal sliding plates 7 are fixedly connected to the interior of the first isolation chamber 3 and the second isolation chamber 5 on opposite sides. A pressure belt 8 is slidably fitted to the outer side of each horizontal sliding plate 7. A layer of sliding film covers both the upper and lower surfaces of the horizontal sliding plate 7, and the sliding film slides and adheres to the pressure belt 8. An anti-adhesion film is provided on the outer side of the pressure belt 8. Pulleys are fitted to both the left and right sides of the pressure belt 8. Bushings 9 are rotatably fitted to both ends of the pulleys. The opposite sides of the bushings 9 extend into the inner walls of the first isolation chamber 3 and the second isolation chamber 5 and are fixedly connected to them. The bushing 9 located at the left rear of the horizontal sliding plate 7 is replaced with a servo motor 10. The front output end of the servo motor 10 is fixedly connected to the pulley. The servo motors 10 are electrically connected to a synchronous control unit. A semi-circular cutter 11 is symmetrically mounted on the middle of one side of the pressing belt 8. The lower part of the opposite side of the semi-circular cutter 11 is fixedly connected to the first isolation chamber 3. The opposite side of the semi-circular cutter 11 is horizontally attached to the side of the pressing belt 8 and slides with it to press and shape the prepreg film in opposite directions, so that both sides can be fully squeezed and attached and kept for a long time for smooth shaping and horizontal straight conveying. Then, the semi-circular cutter performs stable straight positioning and cutting operations.

[0026] A material drop cylinder 12 is vertically mounted on the lower right side of the semi-circular cutter 11. The material drop cylinder 12 extends downward to the bottom of the first isolation chamber 3. A recycling bin 13 is mounted directly below the material drop cylinder 12. An annular base frame 14 is fitted onto the outer bottom of the recycling bin 13. A rotating bracket 15 is fixedly extended on the upper part of the opposite side of the annular base frame 14. The top of the rotating bracket 15 is fitted and fixed to the first isolation chamber 3, so that the cut scraps are discharged outside the isolation chamber and centrally recycled.

[0027] Working principle: In this utility model, a tracked pressing belt 8 is set up in conjunction with a horizontal sliding plate 7 and pulleys to press and shape the prepreg film in opposite directions. This allows both sides to be fully compressed and adhered, maintaining a smooth shape for a longer period of time. This avoids the problem of the prepreg film springing back after being pressed, resulting in an uneven surface. At the same time, it is linearly conveyed in a planar pressing state. Then, a semi-circular cutter 11 is set up to horizontally press and adhere to the two sides of the pressing belt 8 to cut the prepreg film. The prepreg film in the pressing state can maintain a horizontal and stable linear feed, avoiding the problem of continuous cuts caused by the prepreg film being suspended and vibrating.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An apparatus for making a shelf-stable, low temperature cure epoxy resin prepreg, comprising: The bottom frame (1) is characterized in that the top of the bottom frame (1) is fixed with a plurality of support columns (2) in cross symmetry, the top end of the support column (2) is fixedly connected with a first isolation bin (3), the top of the first isolation bin (3) is embedded and assembled with an electric lifting seat (4) in left-right symmetry, the top output end of the electric lifting seat (4) is fixedly connected with a second isolation bin (5), the left and right sides of the first isolation bin (3) and the second isolation bin (5) are symmetrically sleeved with an isolation ring sleeve (6), the opposite sides of the isolation ring sleeve (6) are fixedly connected through elastic cloth, the opposite sides of the first isolation bin (3) and the second isolation bin (5) are fixedly connected with a horizontal sliding plate (7), the outer sides of the horizontal sliding plate (7) are slidably connected with a covering belt (8), the left and right sides of the covering belt (8) are connected with a pulley, the front and rear ends of the pulley are rotatably connected with a shaft sleeve (9), the opposite sides of the shaft sleeve (9) are inserted into the inner walls of the first isolation bin (3) and the second isolation bin (5) and are fixedly connected with them, wherein the shaft sleeves (9) located at the left rear of the horizontal sliding plate (7) are replaced with servo motors (10), the front output end of the servo motor (10) is fixedly connected with the pulley, a semicircular cutter (11) is symmetrically erected on the opposite sides of the middle part of the covering belt (8), the opposite sides of the semicircular cutter (11) are fixedly connected with the first isolation bin (3), and the opposite sides of the semicircular cutter (11) are horizontally attached to the side edges of the covering belt (8) and are slidably connected with them.

2. A device for producing a storage-stable, low temperature cured epoxy resin prepreg according to claim 1, characterized in that The right side of the semicircular cutter (11) is vertically erected with a blanking cylinder (12), and the blanking cylinder (12) penetrates downward to the bottom of the first isolation bin (3).

3. A device for producing a storage-stable, low temperature cured epoxy resin prepreg according to claim 2, characterized in that A recycling barrel (13) is erected below the blanking cylinder (12), an annular chassis (14) is sleeved on the outer side of the bottom of the recycling barrel (13), a rotating support (15) is fixedly extended on the opposite sides of the upper part of the annular chassis (14), and the top end of the rotating support (15) is embeddedly fixed with the first isolation bin (3).

4. The apparatus for producing a storage-stable, low temperature cure epoxy resin prepreg according to claim 1, wherein The isolation ring sleeve (6) is designed in a corrugated folding manner in the left-right direction and is made of temperature insulation material.

5. The apparatus for producing a storage-stable, low temperature cure epoxy resin prepreg according to claim 1, wherein The bottom surface of the bottom frame (1) is covered with a layer of elastic rubber pad.

6. The apparatus for producing a storage-stable, low temperature cure epoxy resin prepreg according to claim 1, wherein The upper and lower surfaces of the horizontal sliding plate (7) are covered with a layer of sliding film, and the sliding film is slidably attached to the covering belt (8).

7. The apparatus for producing a storage-stable, cryogenically curable epoxy resin prepreg according to claim 1, wherein The servo motors (10) are electrically connected with a synchronous control unit.

8. The apparatus for producing a storage-stable, cryogenically curable epoxy resin prepreg according to claim 1, wherein A layer of anti-adhesion film is arranged on the outer side of the covering belt (8).

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