Pultrusion device for producing variable-curvature profiles

Abstract

This invention discloses a pultrusion profile apparatus for producing variable curvature profiles. It includes a fiber bundle supply mechanism, a fiber cloth frame, a preforming mechanism, a resin impregnating device, a motion platform, at least two molds, and a traction mechanism. The fiber bundle supply mechanism supplies fiber bundles; the fiber cloth frame supports the fiber cloth roll and unwinds it; the preforming mechanism preforms the fiber bundles and the unwound fiber cloth from the fiber cloth frame into a single unit to obtain a preformed profile; the resin impregnating device impregnates the preformed profile with resin; the motion platform is configured to mount at least two molds and move any one of them to a working position; each mold has a curved cavity with different curvatures, and the mold at the working position cures the impregnated preformed profile to obtain a curved profile. This invention allows for easy mold replacement, thus facilitating the production of curved profiles with different curvatures.

Description

Technical Field

[0001] This invention relates to a pultrusion profile apparatus, and more particularly to a pultrusion profile apparatus capable of producing variable curvature profiles. Background Technology

[0002] Conventional pultrusion equipment produces straight profiles. While there are some curved pultrusion systems available, they can only produce profiles with a fixed curvature, resulting in poor versatility, numerous inconveniences, and high production costs for curved profiles. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a pultrusion profile device that can produce profiles with variable curvature. It can easily change the mold, thereby facilitating the production of curved profiles with different curvatures.

[0004] To solve the above-mentioned technical problems, the technical solution of the present invention is: a pultrusion profile apparatus capable of producing variable curvature profiles, comprising:

[0005] A fiber bundle supply mechanism for supplying fiber bundles;

[0006] A fiber cloth frame is used to support the fiber cloth roll and unwind the fiber cloth roll;

[0007] A preforming mechanism is used to preform the fiber bundle and the fiber cloth unwound from the fiber cloth frame into a single unit to obtain a preformed profile.

[0008] A resin impregnator for impregnating the preformed profile with resin therein;

[0009] The motion platform is configured to mount at least two molds and to move any one of the molds to the work position;

[0010] At least two molds are detachably mounted on the motion platform, each mold having a curved mold cavity with a different curvature. The mold located at the working position is used to cure the impregnated preformed profile to obtain a curved profile that matches its curved mold cavity.

[0011] A traction mechanism for pulling the curved profile.

[0012] Furthermore, to prevent the mold located at the working position from shifting or deviating during operation, the pultrusion profile device capable of producing variable curvature profiles also includes a mold clamping mechanism for clamping the mold located at the working position.

[0013] Furthermore, the motion platform is also configured to lift any one of the molds.

[0014] To further improve the impregnation effect, the impregnator is a porous injection box through which the preformed profile passes.

[0015] A further specific structure of a preforming mechanism is provided, the preforming mechanism including guide rollers and a distribution shaping and guiding mechanism; wherein,

[0016] The fiber cloth enters the distribution and shaping guiding mechanism after being guided by the guide roller;

[0017] The distribution and shaping guide mechanism is used to arrange the fiber bundles according to a preset pattern and guide the fiber cloth to form a preset shape.

[0018] A further provision provides a specific structure for a fiber tow supply mechanism, the fiber tow supply mechanism comprising:

[0019] A yarn frame for supporting multiple fiber rolls and unwinding the multiple fiber rolls;

[0020] A dryer for drying the fiber bundles wound on the yarn rack;

[0021] Tensioner, used to adjust the tension of the dried fiber bundles;

[0022] A yarn guide is used to guide the fiber bundle after the tension has been adjusted by the tension frame;

[0023] A yarn spreader is used to spread the fiber bundle after it has been guided by the yarn guide, and the fiber bundle after being spread by the yarn spreader enters the preforming mechanism.

[0024] A specific structure of a yarn spreader is further provided, the yarn spreader comprising a vibrating yarn spreading mechanism and a napped double-roller yarn spreading mechanism arranged sequentially along the moving direction of the fiber bundle.

[0025] A further specific structure of a vibrating yarn spreading mechanism is provided, the vibrating yarn spreading mechanism comprising:

[0026] Multiple yarn spreading rollers, the fiber bundles sequentially passing around each of the yarn spreading rollers;

[0027] A vibration device that acts on one of the yarn spreading rollers to cause the corresponding yarn spreading roller to vibrate up and down.

[0028] A further specific structure of a textured roller yarn spreading mechanism is provided, the textured roller yarn spreading mechanism comprising:

[0029] Two side-by-side, rotatable textured rollers are provided with a plurality of protrusions on their peripheral walls, the cross-sectional area of ​​which gradually decreases from the near end of the textured roller to the far end of the textured roller, and the fiber bundle passes through the gap between the two textured rollers.

[0030] A further specific structure of a traction mechanism is provided, the traction mechanism comprising multiple traction wheel sets; wherein,

[0031] The traction wheel assembly includes two traction wheels arranged side by side, and the curved profile passes through the gap between the two traction wheels of the traction wheel assembly;

[0032] The position of the traction wheel set is adjustable, and multiple traction wheel sets are arranged along the curvature of the curved mold cavity of the mold located at the working position, and at least one traction wheel can be driven to rotate.

[0033] Furthermore, in order to enable online cutting of the curved profile, the pultrusion profile apparatus for producing variable curvature profiles also includes a cutting mechanism for cutting the curved profile.

[0034] After adopting the above technical solution, the fiber bundle supply mechanism supplies fiber bundles to the preforming mechanism, the fiber cloth frame supports the fiber cloth roll and unwinds the fiber cloth roll, and supplies fiber cloth to the preforming mechanism. The preforming mechanism preforms the fiber bundles and fiber cloth into one piece to obtain a preformed profile. The resin in the impregnator impregnates the preformed profile, and the mold located at the working position then cures the impregnated preformed profile to obtain a curved profile with the curvature of the curved cavity of the mold located at the working position. During the production of the curved profile, the curved profile is moved by the traction mechanism. When it is necessary to switch products with different curvature radii, the motion platform moves the mold originally located at the working position to one side, and at the same time moves the corresponding pre-installed mold to the working position. This invention can easily change the mold, thereby producing curved profiles with different curvatures, which is convenient and saves time, reduces downtime, improves production efficiency, and also reduces production costs to a certain extent. During the operation of the pultrusion profile device that can produce variable curvature profiles, the mold located at the non-working position can be cleaned, disassembled, or repaired without affecting the production process. Attached Figure Description

[0035] Figure 1 This is a front view of the pultrusion profile apparatus of the present invention capable of producing variable curvature profiles;

[0036] Figure 2 This is a schematic diagram of the structure of the bent profile of the present invention;

[0037] Figure 3 This is a schematic diagram of the structure of the vibration yarn spreading mechanism of the present invention;

[0038] Figure 4 This is a schematic diagram of the mechanism of the textured roller of the present invention. Detailed Implementation

[0039] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0040] like Figure 1 , 2 As shown in Figures 3 and 4, a pultrusion profile apparatus capable of producing variable curvature profiles includes:

[0041] A fiber bundle supply mechanism for supplying fiber bundles 10;

[0042] Fiber cloth frame 1 is used to support the fiber cloth roll and unwind the fiber cloth roll;

[0043] The preforming mechanism 2 is used to preform the fiber bundle 10 and the fiber cloth 20 unwound by the fiber cloth frame 1 into a whole to obtain a preformed profile 30.

[0044] Impregnator 3 is used to impregnate the preformed profile 30 with resin therein.

[0045] The motion platform 4 is configured to mount at least two molds 5 and to move any one of the molds 5 to the working position;

[0046] At least two molds 5 are detachably mounted on the motion platform 4. Each mold 5 has a curved mold cavity with a different curvature. The mold 5 located at the working position is used to cure the impregnated preformed profile 30 to obtain a curved profile 40 that matches its curved mold cavity.

[0047] The traction mechanism 6 is used to pull the curved profile 40.

[0048] In one embodiment, the fiber cloth 20 is a woven fiber cloth.

[0049] In one embodiment, in order to better cure the impregnated preformed profile 30, the impregnated preformed profile 30 is segmentally heated and cured in the curved mold cavity of the mold 5.

[0050] Specifically, in the process of producing the curved profile 40, the fiber bundle supply mechanism supplies fiber bundles 10 to the preforming mechanism 2, the fiber cloth frame 1 supports the fiber cloth roll and unwinds the fiber cloth roll, and supplies fiber cloth 20 to the preforming mechanism 2. The preforming mechanism 2 preforms the fiber bundles 10 and fiber cloth 20 into one piece to obtain the preformed profile 30. The resin in the impregnator 3 impregnates the preformed profile 30, and the mold 5 located at the working position then cures the impregnated preformed profile 30 to obtain the curved profile 40 with the curvature of the curved mold cavity of the mold 5 located at the working position. The bending profile 40 is moved by the traction mechanism 6. When it is necessary to switch products with different curvature radii, the motion platform 4 moves the mold 5 originally located in the working position to one side, and at the same time moves the corresponding pre-installed mold 5 to the working position. This invention can easily replace the mold 5, thereby producing bending profiles 40 with different curvatures. It is convenient and saves time, reduces downtime, improves production efficiency, and also reduces production costs to a certain extent. During the operation of the pultrusion profile device that can produce variable curvature profiles, the mold 5 located in the non-working position can be cleaned, disassembled or repaired without affecting the production process.

[0051] In one embodiment, in order to prevent the mold 5 located at the working position from shifting or deviating during operation, the pultrusion profile apparatus capable of producing variable curvature profiles further includes a mold clamping mechanism for clamping the mold 5 located at the working position.

[0052] In one embodiment, in order to better switch between producing products with different radii of curvature, the motion platform 4 is also configured to drive any one of the molds 5 to rise and fall.

[0053] Specifically, when switching mold 5, the mold clamping mechanism opens, and the mold 5 originally located in the working position is first lowered by the motion platform 4 and then moved to one side. The pre-installed new mold 5 is first moved below the working position by the motion platform 4 and then rises to the working position. The mold clamping mechanism clamps the new mold 5, thus completing the mold 5 switching. The whole switching process is smooth, natural and convenient.

[0054] The motion platform 4 can be selected according to actual needs. In one embodiment, the motion platform 4 includes a support frame, a translation drive mechanism connected to the support frame to drive the support frame to translate, two mounting platforms, and a lifting drive mechanism corresponding to the mounting platforms and installed between the support frame and the opposite mounting platforms to drive the corresponding mounting platforms to rise and fall. Each mounting platform is used to mount one mold 5. The translation drive mechanism can be a linear module, a cylinder, or a conveyor belt, etc., and the lifting drive mechanism can be a cylinder or a hydraulic cylinder, etc.

[0055] In one embodiment, the impregnator 3 is a porous injection box, and the preformed profile 30 passes through the porous injection box.

[0056] The use of a porous injection box allows for better impregnation of the fiber bundles 10 and the fiber cloth 20, preventing the formation of dry yarn.

[0057] In one embodiment, the resin is a vinyl resin, an epoxy resin, or a polyurethane resin.

[0058] The preforming mechanism 2 can be selected according to actual needs. In one embodiment, the preforming mechanism 2 includes guide rollers and a distribution shaping guide mechanism; wherein,

[0059] The guide roller is rotatably supported on the fixed part, and the fiber cloth 20 enters the distribution and shaping guide mechanism after being guided by the guide roller;

[0060] The distribution and shaping guiding mechanism is used to arrange the fiber bundles 10 according to a preset pattern and guide the fiber cloth 20 to form a preset shape.

[0061] The distribution and shaping guiding mechanism can arrange the fiber bundles 10 in a planned manner and guide the fiber cloth 29 to form the required shape, resulting in good preforming effect.

[0062] like Figure 1 As shown, the fiber tow supply mechanism includes:

[0063] Yarn frame 71 is used to support multiple fiber rolls and unwind the multiple fiber rolls;

[0064] Dryer 72 is used to dry the fiber bundles 10 unwound from the yarn rack 71;

[0065] Tensioner 73 is used to adjust the tension of the dried fiber bundle 10;

[0066] The yarn guide 74 is used to guide the fiber bundle 10 after the tension has been adjusted by the tension frame 73;

[0067] The yarn spreader 75 is used to spread the fiber bundle 10 after it has been guided by the yarn guide 74. The fiber bundle 10 after being spread by the yarn spreader 75 enters the preforming mechanism 2.

[0068] In one embodiment, the yarn frame 71 can adjust the tension of the fiber bundle 10, and after further adjustment by the tension frame 73, the tension is basically consistent. The tension frame 73 consists of several sets of rods that can be adjusted up and down. The rods can be metal rods or rods made of other materials.

[0069] In one embodiment, the yarn spreader 75 includes a vibrating yarn spreading mechanism and a napped double-roller yarn spreading mechanism arranged sequentially along the moving direction of the fiber bundle 10.

[0070] The vibration yarn spreading mechanism can be selected according to actual needs, such as... Figure 3 As shown, in one embodiment, the vibrating yarn-spreading mechanism includes:

[0071] Multiple yarn spreading rollers 751, the fiber bundle 10 sequentially passes around each of the yarn spreading rollers 751, and the yarn spreading rollers 751 are rotatably supported on a fixed part;

[0072] Vibration device 752, which acts on one of the yarn spreading rollers 751 to cause the corresponding yarn spreading roller 751 to vibrate up and down.

[0073] The vibration device 752 can be selected according to actual needs, and the vibration device 752 can be an ultrasonic gun.

[0074] The textured double-roller yarn spreading mechanism can be selected according to actual needs, such as... Figure 4 As shown, in one embodiment, the napped double-roller yarn spreading mechanism includes:

[0075] Two parallel textured rollers 753 are rotatably supported on a fixed part. The peripheral wall of each textured roller 753 is provided with a plurality of protrusions 754, the cross-sectional area of ​​which gradually decreases from the near end to the far end of the textured roller 753. The protrusions 754 can be triangular, hemispherical, or semi-ellipsoidal. The fiber bundle 10 passes through the gap between the two textured rollers 753. The textured rollers 753 can rotate relative to each other under the drive of a servo motor or passively rotate relative to each other under the drive of the fiber bundle 10. During the rotation of the two textured rollers 753, the protrusions 754 are equivalent to comb teeth, which play a role in combing the fiber bundle 10.

[0076] Specifically, the fiber bundle 10 is first vibrated and then combed and spread. This structure of the spreader 75 allows the fiber bundle 10 to spread better, making it easier for the fiber bundle 10 to be better impregnated by the resin.

[0077] In one embodiment, the traction mechanism 6 includes multiple traction wheel sets; wherein,

[0078] The traction wheel assembly includes two traction wheels arranged side by side, and the curved profile 40 passes through the gap between the two traction wheels of the traction wheel assembly.

[0079] The position of the traction wheel set is adjustable, and multiple traction wheel sets are arranged along the curvature of the curved mold cavity of the mold 5 located in the working position, and at least one traction wheel can be driven to rotate.

[0080] The traction wheel is driven to rotate by a servo motor.

[0081] Each traction wheel assembly is mounted on a slider, and each slider can slide along different radial directions of a circle. By adjusting the position of the slider in the radial direction through the slider adjustment mechanism, the position of the traction wheel assembly can be adjusted so that each traction wheel assembly is arranged along the curvature of the curved mold cavity of the mold 5 located at the working position.

[0082] like Figure 1 , 2 As shown, in order to cut the curved profile 40 online, the pultrusion profile apparatus for producing variable curvature profiles also includes a cutting mechanism 8 for cutting the curved profile 40.

[0083] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pultrusion profile apparatus capable of producing variable curvature profiles, characterized in that, It includes: A fiber bundle supply mechanism for supplying fiber bundles (10). Fiber cloth frame (1) is used to support the fiber cloth roll and unwind the fiber cloth roll; The preforming mechanism (2) is used to preform the fiber bundle (10) and the fiber cloth (20) unwound by the fiber cloth frame (1) into a whole to obtain a preformed profile (30). Impregnator (3) is used to impregnate the preformed profile (30) with resin therein; The motion platform (4) is configured to mount at least two molds (5) and to move any one of the molds (5) to the working position; At least two molds (5) are detachably mounted on the motion platform (4). Each mold (5) has a curved mold cavity with a different curvature. The mold (5) located at the working position is used to cure the impregnated preformed profile (30) to obtain a curved profile (40) that matches its curved mold cavity. A traction mechanism (6) is used to traction the curved profile (40). A mold clamping mechanism is used to clamp the mold (5) located in the working position. The motion platform (4) is also configured to drive any one of the molds (5) to rise and fall. When switching molds (5), the mold clamping mechanism opens. The mold (5) that was originally located in the working position descends first under the drive of the motion platform (4) and then moves to one side. The new mold (5) that was pre-installed moves first to below the working position under the drive of the motion platform (4) and then rises to the working position. The mold clamping mechanism clamps the new mold (5), thus completing the mold (5) switching. The traction mechanism (6) includes multiple traction wheel sets; wherein, The traction wheel assembly includes two traction wheels arranged side by side, and the curved profile (40) passes through the gap between the two traction wheels of the traction wheel assembly; The position of the traction wheel set is adjustable. Multiple traction wheel sets are arranged along the curvature of the curved cavity of the mold (5) located at the working position. At least one traction wheel can be driven to rotate. Each traction wheel set is mounted on a slider. Each slider can slide along different radial directions of a circle. By adjusting the position of the slider in the radial direction through the slider adjustment mechanism, the position of the traction wheel set can be adjusted so that each traction wheel set is arranged along the curvature of the curved cavity of the mold (5) located at the working position.

2. The pultrusion profile apparatus for producing variable curvature profiles according to claim 1, characterized in that, The impregnator (3) is a porous injection box, through which the preformed profile (30) passes.

3. The pultrusion profile apparatus for producing variable curvature profiles according to claim 1, characterized in that, The preforming mechanism (2) includes guide rollers and a distribution shaping and guiding mechanism; wherein, The fiber cloth (20) enters the distribution and shaping guiding mechanism after being guided by the guide roller; The distribution shaping and guiding mechanism is used to arrange the fiber bundles (10) according to a preset arrangement and guide the fiber cloth (20) to form a preset shape.

4. The pultrusion profile apparatus for producing variable curvature profiles according to claim 1, characterized in that, The fiber tow supply mechanism includes: A yarn frame (71) is used to support multiple fiber rolls and unwind the multiple fiber rolls; Dryer (72) for drying the fiber bundles (10) unwound from the yarn rack (71); Tensioner (73) is used to adjust the tension of the dried fiber bundle (10); A yarn guide (74) is used to guide the fiber bundle (10) after the tension has been adjusted by the tension frame (73); The yarn spreader (75) is used to spread the fiber bundle (10) after it has been guided by the yarn guide (74). The fiber bundle (10) after being spread by the yarn spreader (75) enters the preforming mechanism (2).

5. The pultrusion profile apparatus for producing variable curvature profiles according to claim 4, characterized in that, The yarn spreader (75) includes a vibrating yarn spreading mechanism and a napped double-roller yarn spreading mechanism arranged sequentially along the moving direction of the fiber bundle (10).

6. The pultrusion profile apparatus for producing variable curvature profiles according to claim 5, characterized in that, The vibrating yarn spreading mechanism includes: Multiple yarn spreading rollers (751), the fiber bundles (10) sequentially pass around each of the yarn spreading rollers (751); A vibration device (752) acts on one of the yarn spreading rollers (751) to cause the corresponding yarn spreading roller (751) to vibrate up and down; And / or the said double-roller yarn spreading mechanism includes: Two rotatable textured rollers (753) are arranged side by side. The peripheral wall of the textured rollers (753) is provided with a plurality of protrusions (754) with the cross-sectional area gradually decreasing from the near end of the textured rollers (753) to the far end of the textured rollers (753). The fiber bundle (10) passes through the gap between the two textured rollers (753).

7. The pultrusion profile apparatus for producing variable curvature profiles according to claim 1, characterized in that, It also includes a cutting mechanism (8) for cutting the curved profile (40).

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