A short-cut glass fiber drum granulator

Abstract

The utility model discloses a kind of chopped glass fiber drum granulator, including upper rack, lower rack, drum and angle adjusting mechanism;Lower rack is located below upper rack;Drum rotatably is located on upper rack;Drum has cylinder and the feed inlet and discharge port of being located at the axial both ends of cylinder;Feeding blade, intermediate blade and discharge blade are provided in cylinder along the direction of feed inlet to discharge port;Angle adjusting mechanism is located between upper rack and lower rack, configured to adjust the angle between upper rack and lower rack, realize the elevation angle adjustment of drum.The utility model realizes the granulation of chopped glass fiber, and can adapt to different varieties granulation needs.

Description

Technical Field

[0001] This utility model belongs to the field of chopped glass fiber granulation technology, and specifically relates to a chopped glass fiber roller granulator. Background Technology

[0002] In the production process of chopped glass fiber, it is necessary to granulate the chopped glass fiber. At present, most glass fiber manufacturers use flat vibratory granulation equipment or M-shaped bending tube granulation equipment. Flat vibratory granulation equipment has the problem of excessive excitation force, which can easily cause secondary fiber opening. M-shaped bending tube granulation equipment has the problem of material return at the middle bend. Therefore, neither of these two types of equipment can fully meet the requirements of chopped glass fiber granulation.

[0003] Existing technologies also include some drum-type pelletizers. The tilt angle of the drum directly affects the movement speed of the material inside. Different short-cut fiber products have different pelletizing requirements and therefore different demands on the material movement speed within the drum. However, in these existing drum-type pelletizers, the drums all use a fixed tilt angle, which cannot be adjusted. This makes it impossible to adjust the movement speed of the material inside the drum, failing to meet the pelletizing needs of different short-cut fiber products. The existing fixed-angle drum equipment results in poor product adaptability.

[0004] To achieve effective mixing of materials within the drum, a mixing mechanism is typically installed inside the drum. However, existing mixing mechanisms in granulation equipment suffer from unsatisfactory mixing effects and incomplete discharge, resulting in material residue remaining inside the drum. For example, one existing granulation equipment uses a rotating shaft arranged around the drum axis, with a spiral plate mounted on the shaft. The outermost edge of the spiral plate has a gap with the inner wall of the drum. Due to centrifugal force, most of the chopped glass fiber yarn is distributed along the drum wall. However, this mixing mechanism is ineffective, with much material adhering to the inner wall, leading to low homogenization efficiency and poor practical performance. Furthermore, existing granulation equipment drums lack forced discharge functionality, resulting in material residue inside the drum. Repeated agitation can generate fuzz, affecting product quality. Utility Model Content

[0005] In view of the above analysis, the present invention aims to provide a chopped glass fiber roller granulator to solve one or more of the above-mentioned problems existing in the prior art.

[0006] The purpose of this utility model is achieved as follows:

[0007] A chopped glass fiber roller granulator, comprising:

[0008] Mounting on rack;

[0009] The lower rack is located below the upper rack;

[0010] The drum is rotatably mounted on the upper frame; the drum has a cylinder body and a feed inlet and a discharge outlet located at both ends of the cylinder body along the axial direction; feed blades, intermediate blades and discharge blades are provided inside the cylinder body along the direction from the feed inlet to the discharge outlet;

[0011] An angle adjustment mechanism is located between the upper frame and the lower frame and is configured to adjust the tilt angle of the roller by adjusting the angle between the upper frame and the lower frame.

[0012] Furthermore, the angle adjustment mechanism includes a drive assembly, a support assembly, and a rotating connection assembly; the rotating connection assembly is connected between the upper frame and the lower frame; the drive assembly is connected between the upper frame and the lower frame and is configured to adjust the angle between the upper frame and the horizontal plane; the support assembly is connected between the upper frame and the lower frame and is configured to support and maintain the state of the upper frame and the lower frame after the angle is adjusted.

[0013] Furthermore, the drive assembly includes a manual pump; the support assembly includes universal adjustable feet; and the rotating connection assembly includes a pitch pin and a hinge seat, with the rear end of the upper frame connected via the pitch pin and the hinge seat, and the hinge seat fixed to the lower frame.

[0014] Furthermore, the roller's elevation angle can be adjusted from 0° to 5°.

[0015] Furthermore, one side edge of the feed blade is attached to the inner wall side of the drum feed inlet, and the feed blade is configured to convey the material entering the feed inlet into the drum under the limited guidance of the feed blade.

[0016] Furthermore, the intermediate blades have a conical helical surface; multiple intermediate blades are distributed in a spiral pattern on the inner wall of the cylinder from one end of the feed port to the other end of the discharge port.

[0017] Furthermore, there is a circumferential angle α between two adjacent intermediate blades, the circumferential angle α is 20-40°, and the pitch of the helix is ​​200-400mm.

[0018] Furthermore, one side edge of the discharge blade is attached to the inner wall of the discharge port of the drum, and the discharge blade has a concave arc surface, which is configured to guide the material to be discharged along the concave arc surface to the center position of the discharge port.

[0019] Furthermore, the discharge blades have an inner end and an outer end in the length direction, with the outer end extending to or beyond the discharge port of the drum.

[0020] Furthermore, the feed blades, intermediate blades, and discharge blades can be detachably installed inside the cylinder.

[0021] Furthermore, the upper frame is equipped with a feeding component and a discharging component, with the feeding component positioned corresponding to the feed inlet and the discharging component positioned corresponding to the discharge outlet.

[0022] Furthermore, the orientation of the feed hopper inlet of the feeding assembly is adjustable to accommodate different feeding angles in the previous stage.

[0023] Furthermore, the roller is rotatably mounted in the internal installation space of the upper frame via a support and limit wheel set. The support and limit wheel set has eight support wheels, of which four support wheels roll and contact the cylinder from the top downwards, and the other four support wheels roll and contact the cylinder from the bottom upwards.

[0024] Furthermore, a support raceway is provided on the outer circular surface of the cylinder. The support raceway is a circular annular convex ring, and the four support wheels at one axial end of the cylinder make rolling contact with the annular surface of the support raceway.

[0025] Furthermore, a support and limiting raceway is provided on the outer circumferential surface of the cylinder. The support and limiting raceway has two raceway walls, both of which are annular and protrude from the outer circumferential surface of the cylinder. Four support wheels at one axial end of the cylinder are rotatably installed in the support and limiting raceway. The two raceway walls of the support and limiting raceway have two outer surfaces, each of which rotatably contacts a limiting wheel. In addition, the axle of the limiting wheel is arranged perpendicular to the axle of the support wheel.

[0026] Furthermore, the cylinder body rotates around its own axis through a rotary drive mechanism; the rotary drive mechanism has a driven sprocket, a driving sprocket, a roller chain and a variable frequency geared motor, the output shaft of the variable frequency geared motor is connected to the driving sprocket, the driving sprocket is connected to the driven sprocket through the roller chain, and the driven sprocket is mounted on the cylinder body.

[0027] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0028] a) The chopped glass fiber roller granulator provided by this utility model is suitable for offline or online chopped production lines. The tilt angle of the roller is adjustable. By adjusting the tilt angle of the roller in conjunction with the rotation speed of the roller, the speed of material movement inside the drum can be adjusted, thereby adapting to the granulation needs of different varieties.

[0029] b) The chopped glass fiber roller granulator provided by this utility model has intermediate blades with conical spiral curved surfaces inside the roller. The intermediate blades are installed on the inner wall of the roller in a specific order to achieve granulation in the roller in the form of throwing. It has the advantages of high homogenization efficiency, reliable dispersion and homogenization, uniform particle size, smaller tangential force, less damage to the original fiber, no secondary fiber opening, higher production efficiency, and better product quality.

[0030] c) The chopped glass fiber roller granulator provided by this utility model has discharge blades set in the roller near the discharge port, which can realize discharge without dead corners, with no material residue in the roller and smoother discharge.

[0031] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained from the description and accompanying drawings, which are particularly pointed out. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings.

[0033] Figure 1 A schematic diagram of the first angle structure of the chopped glass fiber roller granulator provided by this utility model;

[0034] Figure 2 for Figure 1 Enlarged view of region A in the middle;

[0035] Figure 3 A schematic diagram of the second angle structure of the chopped glass fiber roller granulator provided by this utility model;

[0036] Figure 4 for Figure 3 Enlarged view of region B in the middle;

[0037] Figure 5 A schematic diagram of the third angle structure of the chopped glass fiber roller granulator provided by this utility model;

[0038] Figure 6 for Figure 5 Enlarged view of region C in the middle;

[0039] Figure 7 for Figure 5 Enlarged view of region D in the middle;

[0040] Figure 8 A schematic diagram of the fourth angle structure of the chopped glass fiber roller granulator provided by this utility model;

[0041] Figure 9 A schematic diagram of the fifth angle structure of the chopped glass fiber roller granulator provided by this utility model;

[0042] Figure 10 for Figure 9 Enlarged view of region E in the middle;

[0043] Figure 11 A cross-sectional structural schematic diagram of the chopped glass fiber roller granulator provided by this utility model;

[0044] Figure 12 for Figure 11 Enlarged view of region F in the middle;

[0045] Figure 13 A schematic diagram of the external structure of the drum of the chopped glass fiber drum granulator provided by this utility model.

[0046] Figure label:

[0047] 1. Upper frame; 1.1. Upper crossbeam; 1.2. Lower crossbeam; 1.3. Limiting square tube;

[0048] 2. Lower frame; 2.1. Casters;

[0049] 3. Drum; 3.1. Drum body; 3.2. Feed blades; 3.3. Intermediate blades; 3.4. Discharge blades; 3.5. Support raceway; 3.6. Support and limit raceway; 3.7. Sprocket mounting flange;

[0050] 4. Angle adjustment mechanism; 4.1. Manual pump; 4.2. Universal adjustment foot; 4.3. Pitch pin; 4.4. Hinge seat; 4.5. Rod end pin; 4.6. Hydraulic cylinder hinge seat; 4.7. Cylinder pin;

[0051] 5. Feeding assembly; 5.1 Feeding end flange; 5.2 Feeding gate body; 5.3 Feeding bin; 5.4 Pressure plate; 5.5 Vibration motor; 5.6 Observation window cover; 5.7 Feeding hinge; 5.8 Feeding gate pressure block; 5.9 First hinge frame; 5.10 Positioning plate; 5.11 First adjusting bolt; 5.12 Second adjusting bolt; 5.13 Third adjusting bolt; 5.14 Fourth adjusting bolt; 5.15 Locking frame;

[0052] 6. Discharge assembly; 6.1. Discharge end flange;

[0053] 7. Rotary drive mechanism; 7.1 Passive sprocket; 7.2 First support wheel; 7.3 Third support wheel; 7.4 Fifth support wheel; 7.5 First limit wheel; 7.6 Second limit wheel. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0055] To facilitate understanding of the embodiments of this application, further explanation and description will be provided below with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this application. In the drawings, the dimensions and relative dimensions of components may be exaggerated for clarity and / or descriptive purposes. When exemplary embodiments can be implemented differently, a specific process sequence may be performed in a different order than that described. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same components.

[0056] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0057] Example 1

[0058] A specific embodiment of this utility model is as follows: Figures 1 to 13 As shown, a chopped glass fiber roller granulator is disclosed, including an upper frame 1, a lower frame 2, a roller 3, and an angle adjustment mechanism 4; wherein, the lower frame 2 is located below the upper frame 1; the roller 3 is rotatably mounted on the upper frame 1; the roller 3 has a cylinder 3.1 and a feed inlet and a discharge outlet located at both ends of the cylinder 3.1 along its axial direction; the cylinder 3.1 has a feed blade 3.2, an intermediate blade 3.3, and a discharge blade 3.4 arranged inside the cylinder 3.1 along the direction from the feed inlet to the discharge outlet; the angle adjustment mechanism 4 is located between the upper frame 1 and the lower frame 2 and is configured to adjust the elevation angle of the roller 3 by adjusting the angle between the upper frame 1 and the lower frame 2.

[0059] In this embodiment, the upper frame 1 is a cuboid frame structure with an internal installation space; the upper frame 1 has an upper crossbeam 1.1 and a lower crossbeam 1.2, and the two upper crossbeams 1.1 and the two lower crossbeams 1.2 are connected by four vertical beams, and two parallel limiting square tubes 1.3 are connected between the two upper crossbeams 1.1; the space enclosed by the upper crossbeams 1.1, the lower crossbeams 1.2 and the four vertical beams constitutes the internal installation space of the upper frame 1.

[0060] In this embodiment, the chopped glass fiber roller granulator further includes a feeding assembly 5 and a discharging assembly 6, which are mounted on the upper frame 1. The feeding assembly 5 is positioned corresponding to the feed inlet, and the discharging assembly 6 is positioned corresponding to the discharge outlet. Specifically, the feeding assembly 5 and the discharging assembly 6 are hinged to both ends of the internal mounting space of the upper frame 1 via opening and closing pins. The feed inlet and discharge outlet of the roller 3 are respectively fitted and aligned with the feed end flange 5.1 and the discharge end flange 6.1. Optionally, an elastic element is installed between the feed end flange 5.1 and the feed inlet of the roller 3, and is fixed to the feed inlet of the roller 3 by double-ended studs and nuts. The discharge end flange 6.1 is fixed to the discharge outlet of the roller 3 by screws.

[0061] In this embodiment, an angle adjustment mechanism 4 is provided between the upper frame 1 and the lower frame, which allows for the adjustment of the elevation angle of the drum 3. By adjusting the elevation angle of the drum 3 in conjunction with adjusting its rotational speed, the speed of material movement within the drum can be adjusted, thus adapting to the granulation needs of different varieties. Preferably, the elevation angle adjustment range of the drum 3 is 0° to 5°, meaning that the angle between the axis of the drum 3 and the horizontal plane can be adjusted between 0° and +5° through the angle adjustment mechanism 4, and the axis of the drum 3 can be adjusted from a horizontal state to a maximum elevation angle of 5°.

[0062] In one alternative embodiment, the angle adjustment mechanism 4 includes a drive assembly, a support assembly, and a rotating connection assembly; wherein the rotating connection assembly is connected between the upper frame 1 and the lower frame 2; the drive assembly is connected between the upper frame 1 and the lower frame 2 and is configured to adjust the angle between the upper frame 1 and the horizontal plane; the support assembly is connected between the upper frame 1 and the lower frame and is configured to support and maintain the state of the upper frame 1 and the lower frame after the angle is adjusted, thereby realizing the elevation angle adjustment of the axis of the roller 3.

[0063] Specifically, the drive assembly includes a manual pump 4.1, which has a cylinder, piston rod, rod end pin 4.5, and cylinder hinge 4.6; the existing manual pump 4.1 is sufficient. The support assembly includes a universal adjustable foot 4.2. The rotating connection assembly includes a pitch pin 4.3 and a hinge seat 4.4. The rear end of the upper frame 1 is connected via the pitch pin 4.3 and the hinge seat 4.4, and the hinge seat 4.4 is fixed to the lower frame 2. Specifically, the rear end of the lower crossbeam 1.2 of the upper frame 1 is connected via the pitch pin 4.3 and the hinge seat 4.4, and the hinge seat 4.4 is bolted to the lower frame 2. The front end of the lower crossbeam 1.2 of the upper frame 1 is supported on the lower frame 2 via the universal adjustable foot 4.2. Optionally, the lower frame 2 can be a rectangular frame structure. The hydraulic cylinder is hinged to the upper frame 1 via cylinder pin 4.7. The piston rod end is hinged to the cylinder hinge seat 4.6 via rod end pin 4.5, and the cylinder hinge seat 4.6 is bolted to the lower frame 2. The manual pump 4.1 is bolted to the lower frame 2, and the oil pipe is connected to the oil port of the cylinder plug chamber. A pointer is installed on the side of the upper frame 1, and an angle marker is installed on the side of the lower frame 2 to indicate the elevation angle of the roller 3. The upper frame 1 is adjusted to a suitable angle by pumping oil or depressurizing the manual pump 4.1. The roller 3 angle is adjusted by ensuring the universal adjusting feet 4.2 provide reliable support and locking them.

[0064] In this embodiment, a feed blade 3.2, multiple intermediate blades 3.3, and a discharge blade 3.4 are installed inside the cylinder body 3.1 of the roller 3. Optionally, the feed blade 3.2, intermediate blades 3.3, and discharge blade 3.4 can be detachably installed inside the cylinder body 3.1. For example, all blades have two studs welded to their mounting surfaces. The studs pass through mounting holes on the roller 3 and are locked in place by nuts on the outside of the roller 3.

[0065] In one alternative embodiment, one side edge of the feed blade 3.2 is abutted against the inner wall of the feed inlet of the drum 3. The feed blade 3.2 is configured to guide the material entering the feed inlet into the interior of the drum 3. The feed blade 3.2 has a certain centripetal angle, which ensures that the chopped glass fiber material entering the feed inlet of the drum 3 is forced into the interior of the drum 3 under the guidance of the feed blade 3.2, thereby improving feeding efficiency.

[0066] In one optional embodiment, the intermediate blade 3.3 has a conical helical surface; multiple intermediate blades 3.3 are installed according to a specific axial distance and circumferential angle. This area is the main area for granulation and forming. That is, the positions of the multiple intermediate blades 3.3 inside the drum 3 are not on the same circumference, but are distributed along the axial length of the drum 3, with a certain distance between adjacent intermediate blades 3.3 along the drum axis. Specifically, the multiple intermediate blades 3.3 are distributed in a helical manner on the inner wall of the drum 3.1 from the inlet end to the outlet end; for example, there is a circumferential angle α between adjacent intermediate blades 3.3, the circumferential angle α is 20-40°, and the helical pitch is 200-400mm. It should be noted that the above-mentioned parameters of the intermediate blades 3.3 can be appropriately adjusted and set according to the size of the drum 3 and the product production requirements.

[0067] When chopped glass fiber yarn enters the main granulation area, it is lifted and scattered by the intermediate blades 3.3. During this process, the chopped glass fiber yarn tumbles and collides, the sheet-like chopped fibers curl into columnar shapes, the loose ends re-aggregate, and the loose filaments and fibers also re-bundle, gradually forming larger columnar particles. The well-granulated chopped glass fiber yarn has good flowability and moves faster than loose filaments and fibers, allowing it to reach the discharge port of drum 3 with fewer cycles. Loose filaments and fibers move slower, requiring more cycles for re-aggregation and granulation, ultimately resulting in all materials reaching a basically uniform particle size at the discharge port of drum 3. Compared to the existing technology that uses spiral plates arranged on the shaft of drum 3 or spiral blades installed on the same circumference of the inner wall of cylinder 3.1, the arrangement of the intermediate blades 3.3 in this embodiment has higher homogenization efficiency, less tangential destructive force, higher production efficiency, and better product quality.

[0068] In one alternative embodiment, one side edge of the discharge blade 3.4 is attached to the inner wall of the discharge port of the roller 3. The discharge blade 3.4 has a certain centripetal angle and an extended discharge surface. The discharge blade 3.4 has a concave arc-shaped surface, which is configured to guide the material to be discharged along the concave arc-shaped surface to the center position of the discharge port. Further, the discharge blade 3.4 has an inner end and an outer end in its length direction. The outer end extends to or out of the discharge port of the roller 3. The entire concave arc-shaped surface of the discharge blade 3.4 serves as the material discharge surface, and the concave arc-shaped surface at the outer end is the extended discharge surface. The discharge blade 3.4 also has two edges in its length direction, one of which is seamlessly connected to the inner wall of the roller 3 and can be abutted and detachable. The discharge blade 3.4 with the above structure can achieve material flow without dead corners. The chopped glass fibers after strong granulation are discharged from the discharge port of the roller 3 through the discharge blade 3.4, resulting in smoother discharge and almost no material residue in the cylinder 3.1.

[0069] In this embodiment, the roller 3 is rotatably mounted inside the upper frame 1 via a support and limiting wheel assembly. The support and limiting wheel assembly has eight support wheels; four support wheels roll downwards from the top of the roller 3.1, and the other four support wheels roll upwards from the bottom of the roller 3.1. Alternatively, it can be understood that both axial ends of the roller 3.1 are supported and limited by four support wheels, and the four contact points between the four support wheels at one axial end of the roller 3.1 and the roller 3.1 are located at the four corners of a rectangle. Optionally, all eight support wheels are made of nylon material, which can reduce noise during the rotation of the roller 3.

[0070] In one alternative embodiment, a support raceway 3.5 is provided on the outer circular surface of the cylinder 3.1. The support raceway 3.5 is a circular annular convex ring, and four support wheels at one axial end of the cylinder 3.1 roll in contact with the annular surface of the support raceway 3.5.

[0071] In one optional embodiment, a support and limiting raceway 3.6 is provided on the outer circular surface of the cylinder 3.1. The support and limiting raceway 3.6 has two raceway walls, both of which are annular and protrude from the outer circular surface of the cylinder 3.1. Four support wheels at one axial end of the cylinder 3.1 are rotatably mounted in the support and limiting raceway 3.6. The two raceway walls of the support and limiting raceway 3.6 have two outer surfaces, each of which is in rolling contact with a limiting wheel. Furthermore, the axle of the limiting wheel is arranged perpendicularly to the axle of the support wheel.

[0072] For example, the outer circular surface of the cylinder 3.1 is provided with a support raceway 3.5 and a support limiting raceway 3.6. Four support wheels at one end of the cylinder 3.1 press against the circular surface of the support limiting raceway 3.6 of the roller 3, and four support wheels at the other end press against the circular surface of the support raceway 3.5 of the roller 3. Two limiting wheels are rolled on the two outer sides of the support limiting raceway 3.6. Specifically, the first support wheel 7.2, the second support wheel, the third support wheel 7.3, and the fourth support wheel are fixed to the lower part of the upper frame 1 by bolts and roll upwards to support the cylinder 3.1 of the roller 3; the fifth support wheel 7.4, the sixth support wheel, the seventh support wheel, and the eighth support wheel are fixed to the limiting square tube 1.3 by bolts and roll downwards to contact the cylinder 3.1; the first limiting wheel 7.5 and the second limiting wheel 7.6 are fixed to the lower part of the upper frame 1 by bolts and roll tangentially to the two outer sides of the support limiting raceway 3.6.

[0073] In this embodiment, the cylinder 3.1 rotates around its own axis via a rotary drive mechanism 7. Optionally, the rotary drive mechanism 7 includes a passive sprocket 7.1, a driving sprocket, a roller chain, and a variable frequency geared motor. The output shaft of the variable frequency geared motor is connected to the driving sprocket, and the driving sprocket is connected to the passive sprocket 7.1 via a roller chain. The passive sprocket 7.1 is mounted on the cylinder 3.1 of the drum 3.

[0074] Furthermore, a sprocket mounting flange 3.7 is provided on the outer circular surface of the cylinder 3.1. Two split sprockets are connected by pins and sprocket connecting plates, and then fixed to the sprocket mounting flange 3.7 by bolts to form a complete passive sprocket 7.1.

[0075] Furthermore, the rotary drive mechanism 7 also includes a tension sprocket, which is connected to a tensioner for tensioning the roller chain.

[0076] In one alternative embodiment, the roller 3 and all blade surfaces inside the roller are provided with a non-metallic coating, which has the functions of antistatic, non-stick, wear-resistant and corrosion-resistant.

[0077] In one alternative embodiment, the bottom surface of the lower frame 2 is equipped with four casters 2.1 with brakes for easy manual transport.

[0078] Because the viscosity and moisture content of the additives used in the production of various types of glass fibers differ, spraying is sometimes necessary to improve the granulation effect of chopped glass fiber yarns. In one optional embodiment, a spraying device is also provided on the feeding assembly 5, which uses a hollow cone atomizing nozzle. Specifically, the spraying device includes a hollow cone atomizing nozzle, a water pipe mounting bracket, and a water pipe; a water pipe window is designed on the lower side of the feeding gate body 5.2, and the water pipe mounting bracket is fitted into the seat hole inside the water pipe window. The axis of the water pipe intersects the axis of the roller 3 at a small angle, not exceeding 30°, such as an angle of 5-15°, and the water pipe does not extend into the inside of the roller 3. After adjusting the position and angle of the water pipe, the water pipe mounting bracket is tightened with a set screw. A hollow cone atomizing nozzle is installed at the water outlet at the front end of the water pipe, and spraying can be turned on as needed to increase the humidity or oil content of the chopped glass fiber, which is beneficial for granulation.

[0079] In this embodiment, the feeding assembly 5 includes a feeding gate body 5.2, a feeding bin 5.3, a pressure plate 5.4, a vibration motor 5.5, an observation window cover 5.6, a feeding hinge 5.7, and a feeding gate pressure block 5.8. The feeding gate body 5.2 is connected as a whole by bolts, the feeding gate pressure block 5.8, and the feeding hinge 5.7. The feeding bin 5.3 is fixed to the feeding gate body 5.2 by the pressure plate 5.4 and bolts. The vibration motor 5.5 is fixed in the T-slot of the feeding gate body 5.2 by bolts and nuts. The position of the vibration motor 5.5 is adjustable. The excitation force of the vibration motor 5.5 ensures smooth material feeding from the feeding bin 5.3. Different amplitudes can be obtained by adjusting the position of the vibration motor as needed.

[0080] Optionally, the orientation of the inlet of the feeding bin 5.3 of the feeding assembly 5 is adjustable. The feeding bin 5.3 is fixed to the feeding gate body 5.2 by a pressure plate 5.4 and bolts. After the bolts are loosened, the direction of the feeding bin 5.3 can be adjusted as needed, i.e., the orientation of the inlet of the feeding bin 5.3, to adapt to different feeding angles in the previous stage. For example, both the feeding gate body 5.2 and the feeding hinge 5.7 are provided with mutually perpendicular waist holes, i.e., cross holes, which can be adjusted in two directions in the horizontal plane using the first adjusting bolt 5.11 and the second adjusting bolt 5.12. The feeding hinge 5.7 is hinged to the first hinge frame 5.9 by a pin. The first hinge frame 5.9 is fixed to the upper frame 1 by screws. The feeding assembly 5 can be opened around the pin for easy cleaning and maintenance. The upper frame 1 is equipped with a third adjusting bolt 5.13 below the first hinge frame 5.9, which can realize the vertical adjustment of the feeding assembly 5. The feeding assembly 5 and the feed end flange 5.1 of the roller 3 can be aligned and fitted by adjustments in three directions. A locking bracket 5.15 is bolted to the upper frame 1 on the open side of the feeding assembly 5. A fourth adjusting bolt 5.14 is installed below the locking bracket 5.15 on the upper frame 1, allowing for vertical adjustment of the locking bracket 5.15. Two long screws are welded to the locking bracket 5.15, and two positioning discs 5.10 are fixed to each screw using a back cap mounting method. After the feeding assembly 5 on the upper frame 1 is closed, it can be locked and fixed to the locking bracket 5.15 by two nuts. The positioning discs 5.10 ensure that the sealing flange of the feeding assembly 5 and the feed end flange 5.1 of the roller 3 fit together without being crushed. The installation and adjustment structure of the discharge assembly 6 is similar to that of the feeding assembly 5 and will not be described further.

[0081] In one alternative embodiment, the rotary drum granulator has a maintenance safety protection function. The upper frame 1 is equipped with a proximity switch, which is installed using a back cap method to sense the opening and closing of the gate. When the gate of the granulator is closed, a signal is sent, and the equipment can start. When the gate is open, the signal is disconnected, and the equipment is forcibly braked and cannot be started.

[0082] The granulation steps using the chopped glass fiber roller granulator of this embodiment are as follows:

[0083] The chopped glass fiber yarn contains a large amount of long filaments, loose filaments, and some clumps and fuzz. After preliminary screening, most of the long filaments and clumps are removed. The screened glass fiber chopped yarn enters the drum 3 of the rotary granulator through the feeding assembly 5. The excitation force of the feeding assembly 5 can be adjusted by adjusting the position of the vibrating motor 5.5 to ensure smooth feeding without blockage. After entering the rotating drum 3, the glass fiber chopped yarn is first guided by the feeding blades 3.2 to be conveyed into the middle blade area 3.3, which is the main area for granulation. After entering the main granulation area, the glass fiber chopped yarn is driven by multiple sets of middle blades 3.3 installed on the inner wall of the drum 3. As the drum 3 rotates, it rises to a certain height and is continuously thrown downwards at an angle. After falling, it is picked up and thrown again by the next set of middle blades 3.3. This production process is repeated until the glass fiber chopped yarn moves to the vicinity of the discharge port. During this process, the glass fiber chopped yarn completes the homogenization, rolling, and bundling processes. Well-granulated chopped glass fiber yarn has good flowability and moves faster than loose filaments and fuzz, allowing it to reach the discharge port with fewer cycles. Loose filaments and fuzz, with their slower movement, require more cycles for re-aggregation and granulation, ultimately resulting in all materials reaching a relatively uniform particle size at the discharge port. Finally, the material is forcibly discharged through the discharge blades 3.4, which face the concave arc of the blades to the center of the discharge port. This discharges all the chopped glass fiber yarn particles from the roller 3 to the discharge assembly 6, from where they are discharged to the next process step.

[0084] Compared with the prior art, the chopped glass fiber roller granulator provided in this embodiment can achieve at least one of the following beneficial effects:

[0085] 1. Suitable for offline or online short-cutting production lines. The tilt angle of the roller is adjustable. By adjusting the tilt angle of the roller in conjunction with the rotation speed of the roller, the speed of material movement inside the drum can be adjusted, thereby adapting to the granulation needs of different varieties.

[0086] 2. The drum is equipped with intermediate blades with conical spiral surfaces. The intermediate blades are installed on the inner wall of the drum in a specific order to achieve granulation in the drum by throwing. This has the advantages of high homogenization efficiency, reliable dispersion and homogenization, uniform particle size, smaller tangential force, less damage to the raw filament, no secondary fiber opening, higher production efficiency, and better product quality.

[0087] 3. By installing discharge blades inside the drum near the discharge port, material can be discharged without dead corners, leaving no material residue inside the drum and making the discharge smoother.

[0088] 4. The roller is supported by nylon support wheels, and the roller rotation is driven by a variable frequency reduction motor and chain drive, which ensures smooth operation and low noise.

[0089] 5. The spraying device uses a hollow cone atomizing nozzle, which is set on the feeding assembly and does not extend into the drum. This does not interfere with the granulation path of the glass fiber chopped yarn, and the nozzle is not easily clogged.

[0090] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A chopped glass fiber roller granulator, characterized in that, include: Mounting on rack; The lower frame is located below the upper frame; A roller is rotatably mounted on the upper frame; the roller has a cylindrical body and an inlet and an outlet located at both ends of the cylindrical body along the axial direction; the cylindrical body is provided with inlet blades, intermediate blades and outlet blades along the direction from the inlet to the outlet; An angle adjustment mechanism is provided between the upper frame and the lower frame, and is configured to adjust the elevation angle of the roller by adjusting the angle between the upper frame and the lower frame.

2. The chopped glass fiber roller granulator according to claim 1, characterized in that, The angle adjustment mechanism includes: A rotating connecting assembly is used to connect the upper frame and the lower frame; A drive assembly, connected between the upper frame and the lower frame, is configured to adjust the angle between the upper frame and the horizontal plane; The support assembly, connected between the upper and lower racks, is configured to support and maintain the upper and lower racks in their adjusted angles.

3. The chopped glass fiber roller granulator according to claim 2, characterized in that, The drive assembly includes a manual pump; The support assembly includes universal adjustable feet; The rotating connection assembly includes a pitch pin and a hinge seat. The rear end of the upper frame is connected to the pitch pin and the hinge seat, and the hinge seat is fixed to the lower frame.

4. The chopped glass fiber roller granulator according to claim 1, characterized in that, The tilt angle adjustment range of the roller is 0° to 5°.

5. The chopped glass fiber roller granulator according to claim 1, characterized in that, One side edge of the feed blade is attached to the inner wall side of the drum feed inlet. The feed blade is configured to convey the material entering the feed inlet into the drum under the limited guidance of the feed blade.

6. The chopped glass fiber roller granulator according to claim 1 or 5, characterized in that, The intermediate blade has a conical helical surface; multiple intermediate blades are distributed in a spiral pattern on the inner wall of the cylinder from one end of the feed inlet to one end of the discharge outlet. Preferably, there is a circumferential angle α between two adjacent intermediate blades, the circumferential angle α is 20-40°, and the pitch of the helix is ​​200-400mm.

7. The chopped glass fiber roller granulator according to claim 6, characterized in that, One side edge of the discharge blade is attached to the inner wall of the discharge port of the drum. The discharge blade has a concave arc surface, which is configured to guide the material to be discharged along the concave arc surface to the center position of the discharge port. Preferably, the discharge blade has an inner end and an outer end in the length direction, and the outer end extends to or out of the discharge port of the roller.

8. The chopped glass fiber roller granulator according to claim 1, characterized in that, The feed blades, intermediate blades, and discharge blades are detachably installed inside the cylinder.

9. The chopped glass fiber roller granulator according to claim 1, characterized in that, The upper frame is equipped with a feeding component and a discharging component. The feeding component is positioned corresponding to the feeding port, and the discharging component is positioned corresponding to the discharging port. Preferably, the orientation of the feed hopper inlet of the feeding component is adjustable to accommodate different feeding angles in the previous stage.

10. The chopped glass fiber roller granulator according to claim 1, characterized in that, The roller is rotatably mounted in the internal installation space of the upper frame via a support and limiting wheel set. The support and limiting wheel set has eight support wheels, of which four support wheels roll and contact the cylinder from above downwards, and the other four support wheels roll and contact the cylinder from below upwards. Preferably, a support raceway is provided on the outer circular surface of the cylinder. The support raceway is a circular annular convex ring, and the four support wheels at one axial end of the cylinder are in rolling contact with the annular surface of the support raceway. Preferably, a support and limiting raceway is provided on the outer circumferential surface of the cylinder. The support and limiting raceway has two raceway walls, both of which are annular and protrude from the outer circumferential surface of the cylinder. Four support wheels at one axial end of the cylinder are rotatably installed in the support and limiting raceway. The two raceway walls of the support and limiting raceway have two outer surfaces, each of which is in rolling contact with a limiting wheel. Furthermore, the axle of the limiting wheel is arranged perpendicular to the axle of the support wheel. Preferably, the cylinder body rotates around its own axis through a rotary drive mechanism; the rotary drive mechanism has a passive sprocket, a driving sprocket, a roller chain and a variable frequency reduction motor, the output shaft of the variable frequency reduction motor is connected to the driving sprocket, the driving sprocket is connected to the passive sprocket through the roller chain, and the passive sprocket is mounted on the cylinder body.

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