A noise-reducing vibration tray

Abstract

The utility model relates to a kind of noise reduction vibration disc, to solve the problem of the large noise of traditional vibration disc, in the internal of bunker, inner wall is equipped with multiple layers of buffer ring composed of special buffer plate and spring. Buffer plate selects high molecular material with good sound absorption performance, spring adopts high-strength, corrosion-resistant alloy material, both synergistic work, can greatly weaken the impact force of material when sliding in bunker. At the same time, the bottom of bunker is paved with buffer layer with gradient thickness, thicker near the center of bunker, thinner at the edge, this design can further reduce the noise generated by the collision of material and hopper. Above the bunker, equipped with three layers of composite structure of sound insulation cover, outer layer is high-strength metal protective layer, middle layer is glass fiber cotton with excellent sound absorption effect, inner layer is rubber material with good sealing performance, three layers of structure closely cooperate, further block noise to the outside. The present noise reduction vibration disc can effectively reduce the noise during operation, and provides a feasible low-noise solution for the relevant working environment.

Description

Technical Field

[0001] This utility model relates to the field of vibratory feeder technology, and in particular to a noise-reducing vibratory feeder. Background Technology

[0002] Vibratory feeders, as auxiliary feeding devices for automated assembly or processing machinery, are widely used in many industries such as electronics, hardware, and plastics. Traditional vibratory feeders typically consist of a hopper, a base, and a drive unit. Their working principle involves using vibrations generated by a vibratory motor, which are transmitted through the base to the hopper, causing the material inside the hopper to be arranged and conveyed out along a specific track.

[0003] However, a significant problem with traditional vibratory feeders in existing technology is their high noise levels during operation. On one hand, the vibrations between mechanical components during operation are transmitted through the base to the support components, generating considerable vibration noise. On the other hand, the material constantly colliding with the inner wall of the hopper during vibration also produces a significant amount of noise. This noise not only severely pollutes the working environment, but prolonged exposure to high noise levels can also adversely affect the hearing and other health of operators, thus limiting the application of vibratory feeders in workplaces with strict noise control requirements.

[0004] To address the issue of high noise levels in traditional vibratory feeders, the industry has explored various improvement methods. For example, installing rubber vibration damping pads at the bottom of the vibratory feeder can reduce the transmission of vibration to the supporting structure, thus lowering noise to some extent. However, this approach only provides a simple optimization of the vibration transmission path and fails to systematically address the root causes of vibration and noise generation.

[0005] Therefore, developing a new type of vibratory feeder that can effectively reduce noise while taking into account cost and production efficiency, in order to solve the problems of high noise, high cost and low production efficiency of traditional vibratory feeders, is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] To address the problems existing in the background technology, this utility model develops a noise-reducing vibratory feeder, which can effectively reduce noise and can be quickly deployed on traditional vibratory feeder equipment. The device mainly includes a vibrating section, a base below the vibrating section, and a cylindrical hopper above the vibrating section, with a feeding section connected to the outside of the hopper.

[0007] The base is used to support the entire equipment, the vibrating part is used to provide vibration to the hopper so as to realize the vibration operation of the parts in the hopper, and the feeding part delivers the parts to be operated to the hopper from the outside.

[0008] Furthermore, the inner wall of the hopper is provided with at least three layers of buffer rings in a circumferential shape. The buffer rings include multiple arc-shaped buffer plates. The buffer plates are connected to the inner wall of the hopper by springs. Corresponding tenons are provided on the end face of the buffer plates. The buffer plates are connected to each other through their respective tenons to form a ring structure.

[0009] Furthermore, the buffer plate is made of polyurethane material.

[0010] Furthermore, the spring is a piano wire spring, and the spring and the buffer plate are circumferentially distributed, with a distance of 50-100mm between the two springs.

[0011] The buffer plate is elastically connected to the inner wall of the hopper via springs, forming a spring-mass vibration damping system that effectively attenuates the transmission of vibration energy. When material impacts the buffer plate, the elastic deformation of the springs absorbs kinetic energy, reducing noise generated by rigid collisions. Simultaneously, vibrations transmitted from the vibrating part to the inner wall of the hopper can also be absorbed to some extent by the springs and the buffer plate. The buffer plate is made of polyurethane, whose hardness is adjustable and can be selected according to the weight or hardness of the processed parts. Compared to ordinary rubber, polyurethane has three to five times the wear resistance, making it suitable for high-speed material impact scenarios. The springs are piano wire springs, which have high tensile strength (up to 2000 MPa) and longer fatigue life, making them suitable for high-frequency vibrations above 150 Hz or heavy-load scenarios. A certain spacing between the springs ensures uniform force distribution on the buffer plate.

[0012] Furthermore, a buffer layer is provided at the bottom of the hopper, the thickness of the buffer layer is 1-3mm, and the thickness of the buffer layer adopts a gradient distribution, with a higher thickness near the bottom edge of the hopper and a lower thickness in the central area of ​​the hopper, the thickness of the buffer layer gradually decreasing from the outside to the center.

[0013] Furthermore, the buffer layer is made of thermoplastic polyurethane elastomer.

[0014] Due to centrifugal force, the material inside the vibratory feeder exhibits the highest linear velocity at the edges, resulting in a higher frequency and greater impact force when colliding with the inner wall. This necessitates a thicker buffer layer to absorb energy. Conversely, the material in the central region moves at lower speeds and experiences less collision energy; an excessively thick buffer layer would increase rotational inertia. Therefore, a layer thicker at the edges and thinner at the center is employed. The thermoplastic polyurethane elastomer, with a tensile strength ≥30MPa and an elongation at break ≥400%, maintains good tear resistance even at a thickness of 1mm, making it suitable for long-term use under high-frequency vibration.

[0015] Furthermore, a soundproof cover is provided above the silo. The soundproof cover is shaped like a bottle cap and covers the silo. The soundproof cover has a three-layer composite structure. The outer layer is a rigid soundproof layer made of aluminum alloy plate, the middle layer is a damping and vibration reduction layer made of butyl rubber damping sheet, and the inner layer is a porous sound absorption layer made of glass fiber cotton.

[0016] The outer layer is made of aluminum alloy plate, which can effectively block mid-to-high frequency noise above 100Hz. The high rigidity of the metal plate can withstand the acceleration vibration environment of the vibratory feeder, avoiding sound insulation failure due to material flexibility deformation. The outer metal layer is prone to resonance under vibration excitation, so a damping layer is added. Butyl rubber damping sheets can be directly attached to the inner metal layer with adhesive backing to suppress the resonance of the outer layer. The inner porous sound-absorbing layer is mainly used for sound absorption. The glass fiber cotton has a sound absorption coefficient ≥0.8 for noise in the 200~5000Hz range, and has a particularly high absorption effect on mechanical impact noise in the 200 to 1000Hz range dominated by the vibratory feeder.

[0017] Furthermore, at least four locking blocks are evenly arranged on the outer side of the soundproof cover, and at least four buckles are also provided on the outer side of the hopper. The soundproof cover is fixed above the hopper by connecting the locking blocks and the buckles.

[0018] Furthermore, at least three conical rubber shock absorbers are evenly arranged below the base.

[0019] The advantages and beneficial effects of this utility model are as follows: By setting no less than three layers of buffer rings composed of polyurethane buffer plates and piano wire springs on the inner wall of the hopper, this utility model effectively attenuates the transmission of vibration energy, solves the problem of noise generated by the collision between materials and the inner wall of the hopper, reduces rigid collision noise, and absorbs part of the vibration transmitted by the vibrating part. The bottom of the hopper adopts a buffer layer made of thermoplastic polyurethane elastomer with a gradient thickness distribution. Based on the movement characteristics of materials in different areas of the hopper, a thicker buffer layer is set in the edge areas with high linear velocity, collision frequency, and impact force to absorb energy, while a thinner buffer layer is set in the central area to avoid increasing rotational inertia, effectively absorbing the collision energy of materials under high-frequency vibration for a long time. A three-layer composite soundproof cover is set above the hopper, solving the problem of noise propagation from the vibrating plate and significantly reducing noise pollution to the working environment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the present invention.

[0021] Figure 2 This is a schematic diagram of the hopper of this utility model.

[0022] Figure 3 This is a schematic diagram of the buffer ring of this utility model.

[0023] Figure 4 This is a schematic diagram of the rubber shock absorber of this utility model.

[0024] Among them, 1-vibrating part, 2-base, 3-hopper, 4-feeding part, 5-buffer ring, 51-buffer plate, 52-spring, 53-clamp, 6-buffer layer, 7-soundproof cover, 71-clamp block, 72-buffer, 8-rubber shock absorber. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0026] like Figures 1 to 4 As shown, the core structure of a noise-reducing vibratory feeder of the present invention mainly includes a vibrating part 1, a base 2, a hopper 3, and a feeding part 4.

[0027] In this embodiment, the vibration unit 1 provides power to the entire vibratory feeder, enabling the material to vibrate in an orderly manner within the hopper, thus achieving automatic material arrangement and conveying. Its internal structure is precise, and through electromagnetic drive and other methods, it ensures the stability and continuity of vibration, meeting the vibration requirements of different materials.

[0028] The base 2 supports the entire noise-reducing vibratory feeder, with three evenly spaced conical rubber shock absorbers 8 below. This structural design not only effectively reduces vibration transmission to the placement surface, preventing additional noise caused by vibration, but also enhances the stability of the equipment placement, ensuring the smooth operation of the vibratory feeder.

[0029] Multiple sound-absorbing and buffering devices are installed in the hopper 3. Three layers of buffer rings 5 ​​are arranged circumferentially on the inner wall of the hopper 3. Each buffer ring 5 consists of multiple arc-shaped buffer plates 51, which are connected to the inner wall of the hopper 3 by piano wire springs 52. The springs 52 and buffer plates 51 are circumferentially distributed, with a spacing of 75mm between adjacent springs 52. The buffer plates 51 are made of polyurethane material, which has good flexibility and wear resistance. Corresponding latches 53 are provided on their end faces, and the buffer plates 51 are interconnected through the latches 53 to form a ring structure, effectively buffering the impact of falling materials and reducing noise.

[0030] The bottom of the hopper 3 is equipped with a buffer layer 6, with a thickness of 1-3 mm, distributed in a gradient. The thickness is 3 mm near the bottom edge of the hopper 3, and 1 mm in the center area, gradually decreasing from the outside to the center. The buffer layer 6 is made of thermoplastic polyurethane elastomer. This design can better adapt to the distribution of materials at the bottom, further buffering the movement of materials at the bottom of the hopper and reducing collision noise with the bottom.

[0031] A soundproof cover 7 is installed above the hopper 3. The soundproof cover 7 is shaped like a bottle cap and has a three-layer composite structure. The outer layer is a rigid soundproof layer made of aluminum alloy plate, which can effectively block the entry of external noise and the transmission of internal noise. The middle layer is a damping and vibration reduction layer made of butyl rubber damping sheet to reduce noise generated by vibration. The inner layer is a porous sound-absorbing layer made of glass fiber cotton to absorb residual noise. Four locking blocks 71 are evenly arranged on the outside of the soundproof cover 7, and four corresponding buckles 72 are arranged on the outside of the hopper 3. The soundproof cover 7 is fixed above the hopper 3 by connecting the locking blocks 71 and the buckles 72, ensuring sound insulation effect while facilitating installation and disassembly.

[0032] The feeding section 4 is responsible for conveying materials into the hopper 3. Its structural design ensures that materials can enter the hopper smoothly and continuously, providing a stable material source for the normal operation of the vibratory feeder. During the feeding process, through reasonable design, material accumulation and blockage are avoided, ensuring smooth operation of the equipment.

[0033] How to use: In actual use, the parts to be processed are first conveyed into the hopper 3 through the feeding section 4. The vibrating section 1 is activated, providing vibration to the hopper 3, causing the parts inside the hopper 3 to vibrate. During the vibration process, when the parts collide with the inner wall of the hopper 3, the buffer ring 5 plays its role. The buffer plate 51, made of polyurethane, is elastically connected by the piano wire spring 52, effectively attenuating the transmission of vibration energy, reducing the noise generated by rigid collisions, and absorbing some of the vibration transmitted from the vibrating section 1 to the inner wall of the hopper.

[0034] The buffer layer 6 at the bottom of the silo 3 works according to the motion characteristics of the material in different areas of the silo. In areas with high linear velocity at the edge and high frequency and impact force of material collision with the inner wall, the thicker buffer layer 6 can efficiently absorb energy; in the central area, the thinner buffer layer 6 can absorb a certain amount of energy while avoiding increasing the moment of inertia.

[0035] The soundproof enclosure 7 effectively blocks noise transmission throughout the entire vibration operation. The outer layer, made of aluminum alloy, blocks mid-to-high frequency noise above 100Hz, the middle layer of butyl rubber damping sheet suppresses outer layer resonance, and the inner layer of glass fiber cotton efficiently absorbs mechanical impact noise from 200 to 1000Hz, significantly reducing noise pollution to the working environment. The rubber shock absorber 8 under the base 2 effectively reduces the transmission of mechanical vibration to the supporting components, further reducing overall noise.

[0036] The above provides a detailed description of the noise-reducing vibratory feeder provided by this utility model. Specific examples have been used to illustrate the principles and implementation methods of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A noise-reducing vibratory feeder, comprising a vibrating part (1), a base (2) disposed below the vibrating part (1), a cylindrical hopper (3) disposed above the vibrating part (1), and a feeding part (4) connected to the outside of the hopper (3), characterized in that, The inner wall of the hopper (3) is provided with at least three layers of buffer rings (5) in a circumferential shape. The buffer rings (5) include multiple arc-shaped buffer plates (51). The buffer plates (51) are connected to the inner wall of the hopper (3) by springs (52). Corresponding tenons (53) are provided on the end face of the buffer plates (51). The buffer plates (51) are connected to each other through their respective tenons (53) to form a ring structure.

2. The noise-reducing vibratory feeder according to claim 1, characterized in that, The buffer plate (51) is made of polyurethane material.

3. The noise-reducing vibratory feeder according to claim 1, characterized in that, The spring (52) is a piano wire spring. The spring (52) and the buffer plate (51) are circumferentially distributed, and the distance between the two springs (52) is 50-100mm.

4. The noise-reducing vibratory feeder according to claim 1, characterized in that, The bottom of the hopper (3) is provided with a buffer layer (6). The thickness of the buffer layer (6) is 1-3 mm. The thickness of the buffer layer (6) is gradient-distributed, with a higher thickness near the bottom edge of the hopper (3) and a smaller thickness in the center of the hopper (3). The thickness of the buffer layer (6) gradually decreases from the outside to the center.

5. A noise-reducing vibratory feeder according to claim 4, characterized in that, The buffer layer (6) is made of thermoplastic polyurethane elastomer.

6. A noise-reducing vibratory feeder according to claim 1, characterized in that, A soundproof cover (7) is provided above the silo (3). The soundproof cover (7) is in the shape of a "bottle cap" and covers the silo (3). The soundproof cover (7) is a three-layer composite structure. The outer layer of the soundproof cover (7) is a rigid soundproof layer made of aluminum alloy plate, the middle layer is a damping and vibration reduction layer made of butyl rubber damping sheet, and the inner layer is a porous sound absorption layer made of glass fiber cotton.

7. A noise-reducing vibratory feeder according to claim 6, characterized in that, The soundproof cover (7) is evenly provided with at least four clips (71) on the outside, and the hopper (3) is also provided with at least four buckles (72) on the outside. The soundproof cover (7) is fixed above the hopper (3) by connecting the clips (71) and the buckles (72).

8. A noise-reducing vibratory feeder according to any one of claims 1 to 7, characterized in that, At least three conical rubber shock absorbers (8) are evenly arranged below the base (2).

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