Electromagnetic vibratory feeder with reversible feed

Abstract

The utility model discloses a kind of electromagnetic vibration feeder of reverse conveying, comprising: carrier, excitation frame, electromagnetic vibrator pulse power control system, single degree of freedom leaf spring group, electromagnetic vibrator and vibration isolation spring;Excitation frame is used to connect carrier and single degree of freedom leaf spring group, to accept single degree of freedom leaf spring group transmission vibration force from electromagnetic vibrator generation, and vibration force is transmitted to carrier, carrier transmits the vibration force of synthesis to material, realizes the throwing movement of material, and the amplitude size of electromagnetic vibrator in horizontal or vertical direction can be changed by separate adjustment, the proportion of horizontal and vertical direction's component force can be changed, to adjust excitation angle online, to adapt to the conveying characteristic of different material, and the power phase sequence of sine ac half-wave phase-shifted cutoff controller in horizontal or vertical vibration direction is changed, the conveying direction of material will reverse, realize material real-time online reverse conveying, satisfy conveying process requirement.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic vibratory feeder technology, specifically to a reversible electromagnetic vibratory feeder. Background Technology

[0002] An electromagnetic vibrating feeder is a device that uses the vibration of its body to cause the material flowing on it to be thrown, thereby realizing the material conveying. It is widely used in the material conveying, weighing and packaging of positive and negative electrode materials for lithium batteries, as well as the batching execution unit of various bulk material systems.

[0003] Existing electromagnetic vibratory feeders mostly use a vibrating frame at a fixed angle to the trough to transmit the excitation force. The excitation angle cannot be changed, and the material conveying direction cannot be reversed. They cannot meet the functional requirements of adapting to the material conveying characteristics, changing the excitation angle in real time, and realizing reversible conveying. Therefore, we need to propose a reversible electromagnetic vibratory feeder. Utility Model Content

[0004] The purpose of this invention is to provide a reversible electromagnetic vibrating feeder that solves the problems of electromagnetic vibrating feeders being able to only convey materials in one direction and the excitation angle not being able to be adjusted online, thus failing to meet the different excitation angle requirements of different materials, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A reversible electromagnetic vibrating feeder includes: a carrier, a vibration frame, an electromagnetic vibrator pulse power supply control system, a single-degree-of-freedom leaf spring assembly, an electromagnetic vibrator, and vibration isolation springs. The excitation frame is used to connect the carrier body and the single-degree-of-freedom leaf spring assembly. It is used to receive the vibration force generated by the electromagnetic vibrator transmitted by the single-degree-of-freedom leaf spring assembly and transmit the vibration force to the carrier body. The carrier body transmits the combined vibration force to the material to realize the throwing motion of the material. The electromagnetic vibrator is provided in multiple sets, and the multiple sets of electromagnetic vibrators are arranged in both horizontal and vertical directions.

[0006] Preferably, the carrier is a trough or a circular tube, or the cross-section of any flowable material, and the trough of the carrier is made of sheet metal after bending.

[0007] Preferably, the vibration frame is a rigid guarantee body for sheet metal laser blanking, bending and welding, used to provide overall strength guarantee.

[0008] Preferably, the electromagnetic vibrator pulse power supply control system includes two sets of sinusoidal AC half-wave phase-shifting and chopping controllers and an anti-interference distributor, as well as other standardized electrical components such as contactors. The two sets of sinusoidal AC half-wave phase-shifting and chopping controllers are set independently, and the excitation angle is reversed and changed by changing the phase difference and pulse width of the horizontal and vertical vibration input pulses.

[0009] Preferably, the single-degree-of-freedom leaf spring assembly includes a leaf spring and a spacer. The leaf spring is made of metal, fiberglass board, or carbon fiber board, and the leaf spring and the spacer are fastened together by stacked bolts.

[0010] Preferably, all of the electromagnetic vibrators are electrically connected to the electromagnetic vibrator pulse power supply control system via wires, and the electromagnetic vibrator pulse power supply control system is used to control the multiple electromagnetic vibrators.

[0011] Preferably, the vibration isolation spring is made of a rubber spring or a common metal spring or other buffer spring.

[0012] Preferably, the electromagnetic vibrator in the horizontal direction can be a single unit or one unit in each of the left and right horizontal directions, and the electromagnetic vibrator in the vertical direction can be composed of a single unit or multiple units distributed together.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. By separately adjusting the amplitude of the electromagnetic vibrator in the horizontal or vertical direction, the ratio of the horizontal and vertical force components can be changed, thereby adjusting the excitation angle online to adapt to the conveying characteristics of different materials. 2. By switching the vibration phase difference of the electromagnetic vibrator in the horizontal or vertical vibration direction from 0° to 180° (by changing the power phase sequence of the sinusoidal AC half-wave phase-shifting and chopping controller in the horizontal or vertical vibration direction), the direction of the resultant force formed by the two will change from a to 180°-a. At that time, the material conveying direction will be reversed, which can realize the real-time online reverse conveying of materials and meet the conveying process requirements. 3. Reversible conveying is achieved on the same equipment, avoiding the space occupation of Y-type material distribution valves required by two electromagnetic feeders and the problem of power idleness when two electromagnetic feeders achieve unidirectional conveying. When conveying in any direction, all electromagnetic vibrators of the reversible electromagnetic vibrating feeder are in the working state to form a resultant force. Smaller electromagnetic vibrators can be selected and uniformly distributed, reducing the material input of rigid auxiliary components such as vibration frame, improving production efficiency and reducing input costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 A schematic diagram of the structure of this utility model with the addition of a horizontal electromagnetic vibrator; Figure 3 This is the electrical schematic diagram of this utility model; Figure 4 This is the phase diagram of this utility model.

[0015] In the diagram: 1. Load-bearing body; 2. Vibration frame; 3. Electromagnetic vibrator pulse power supply control system; 31. Sinusoidal AC half-wave phase-shifting and chopping controller; 32. Anti-interference distributor; 4. Single-degree-of-freedom leaf spring assembly; 41. Leaf spring; 42. Spacer; 5. Electromagnetic vibrator; 6. Vibration isolation spring. Detailed Implementation

[0016] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 This utility model provides a technical solution: A reversible electromagnetic vibrating feeder includes: a carrier body 1, a vibration frame 2, an electromagnetic vibrator pulse power supply control system 3, a single-degree-of-freedom leaf spring assembly 4, an electromagnetic vibrator 5, and vibration isolation springs 6. The vibration frame 2 connects the carrier body 1 and the single-degree-of-freedom leaf spring assembly 4, receives the vibration force generated by the electromagnetic vibrator 5 from the single-degree-of-freedom leaf spring assembly 4, and transmits the vibration force to the carrier body 1. The carrier body 1 transmits the combined vibration force to the material, realizing the throwing motion of the material. Multiple sets of electromagnetic vibrators 5 are provided, and the multiple sets of electromagnetic vibrators 5 are arranged in the horizontal and vertical directions. In this embodiment, by arranging the electromagnetic vibrators 5 horizontally and vertically and changing their mechanical properties within the cycle, the direction and angle of force synthesis can be adjusted. At the same time, the problem of mutual interference between multiple drivers is avoided. This solves the problem that the electromagnetic vibrating feeder can only convey materials in one direction and the excitation angle cannot be adjusted online, thus failing to meet the different excitation angle requirements of different materials. This improves the utilization efficiency of the electromagnetic vibrator 5 and saves height space. The support body 1 is a trough or a round tube, or a cross-section of any flowable material. The trough form of the support body 1 is made of sheet metal material after bending. In this embodiment, sheet metal (such as cold-rolled steel plate or galvanized steel plate) has high tensile strength and rigidity. After bending, it can form an integral trough structure without splicing gaps. It can withstand the high-frequency vibration force transmitted by the electromagnetic vibrator and the impact of materials. Compared with welded troughs, sheet metal bending avoids vibration fatigue cracking caused by welding stress. It is especially suitable for the long-term high-frequency vibration working environment of the feeder, extending the service life of the equipment. In addition, sheet metal bending is processed by mold or CNC bending machine, and the trough has high dimensional accuracy and good surface flatness. This high precision ensures that the material throwing trajectory is consistent when the carrier vibrates in the forward and reverse directions, avoiding material conveying deviation or accumulation caused by trough deformation. It is especially suitable for the requirement of trajectory symmetry when conveying in reverse. The thickness of the sheet metal material can also be flexibly selected according to the weight of the material. Compared with cast or thick steel plate welded troughs, the weight is greatly reduced. The lightweight carrier 1 can reduce the driving load of the electromagnetic vibrator 5, reduce energy loss, and make the vibration response more sensitive. It is convenient to realize the rapid switching of conveying direction and speed through the electromagnetic vibrator pulse power control system 3. The vibration frame 2 is a rigid guarantee body for sheet metal laser blanking, bending and welding, which is used to provide overall strength guarantee; In this embodiment, the excitation frame 2 is a rigid guarantee body for sheet metal laser blanking, bending and welding. It provides rigid support for the carrier 1 to avoid resonance between the system frequency and the excitation frequency, and provides overall strength guarantee. At the same time, it receives the vibration force of the electromagnetic vibrator 5 transmitted through the single degree of freedom leaf spring group 4 and transmits it to the carrier 1. The electromagnetic vibrator pulse power control system 3 includes two sets of sinusoidal AC half-wave phase-shifting and cutting controllers 31 and an anti-interference distributor 32, as well as other standardized electrical components such as contactors. The two sets of sinusoidal AC half-wave phase-shifting and cutting controllers 31 are set independently. In this embodiment, the AC power supply is connected to the sinusoidal AC half-wave phase-shifting and chopping controller 31 via an AC contactor through a fuse. For lines that need to connect multiple electromagnetic vibrators 5, an anti-interference distributor 32 needs to be added before connecting to the electromagnetic vibrators 5. The phase difference of the output pulses between the sinusoidal AC half-wave phase-shifting and chopping controllers 31 is changed by switching the AC contactor as shown in the figure, thereby causing the vibration force output by the electromagnetic vibrator 5 to produce a target offset on the phase diagram. The excitation angle is reversed and changed by changing the phase difference and pulse width of the horizontal and vertical vibration input pulses. The single-degree-of-freedom leaf spring assembly 4 includes a leaf spring 41 and a spacer 42. The leaf spring 41 is made of metal, fiberglass board or carbon fiber board. The leaf spring 41 and the spacer 42 are fastened together by stacked bolts. In this embodiment, the single-degree-of-freedom leaf spring assembly 4 mainly transmits the force in the vibration direction of the electromagnetic vibrator 5, while filtering and isolating the force perpendicular to the vibration direction of the electromagnetic vibrator 5 fed back from the carrier 1. Multiple sets of electromagnetic vibrators 5 are electrically connected to the electromagnetic vibrator pulse power control system 3 via wires. The electromagnetic vibrator pulse power control system 3 is used to control multiple sets of electromagnetic vibrators 5. In this embodiment, the electromagnetic vibrator 5 serves as the power source for the entire system, and is controlled by the electromagnetic vibrator pulse power supply control system 3 to generate a sinusoidal reciprocating force that meets the phase requirements. The vibration isolation spring 6 is made of a buffer spring such as a rubber spring or a common metal spring; In this embodiment, the vibration isolation spring 6 mainly functions to isolate the vibration of the system from the equipment mounting bracket, ensuring that the noise and vibration leakage of the equipment are controllable; The electromagnetic vibrator 5 in the horizontal direction can be a single unit or one unit in each of the left and right horizontal directions, and the electromagnetic vibrator 5 in the vertical direction can be composed of a single unit or multiple units distributed together. In this embodiment, when two electromagnetic vibrators 5 are set horizontally, one on each side, the excitation force and phase of the left and right vibrators can be adjusted by the two independent sinusoidal AC half-wave phase-shifting and chopping controllers 31 of the electromagnetic vibrator pulse power control system 3. During forward conveying, the reciprocating vibration force of the horizontal vibrator and the reciprocating force of the vertical vibrator are simultaneously located in the positive or negative directions of the coordinate axis, and the direction of the combined reciprocating force forms an angle α with the tank body, pushing the material to be thrown forward along the carrier 1. During reverse conveying, the reciprocating vibration force of the horizontal vibrator and the reciprocating force of the vertical vibrator are always located in opposite directions of the positive and negative directions of the coordinate axis at the same time, and the direction of the combined force forms an angle 180°-α with the tank body, and the material is thrown in the opposite direction to achieve reverse conveying. Compared to a single horizontal vibrator that achieves reverse conveying by simply changing the vibration direction (which is prone to conveying deviation due to insufficient force symmetry), the independent control of the left and right dual units can precisely regulate the combined direction of the horizontal force, ensuring that the material trajectory is stable during reverse conveying without deviation or accumulation. When multiple units are distributed vertically (such as being spaced along the length of the carrier 1), the vertical vibration of the carrier 1 can be made more uniform, avoiding excessively strong or weak local vibration caused by a single vibrator. Working principle: When the equipment is running, the electromagnetic vibrators 5 in the horizontal direction and the electromagnetic vibrators 5 in the vertical direction form the first resultant force. The resultant force forms an angle 'a' with the horizontal direction of the carrier. The material moves along the throwing direction of angle 'a'. Changing the amplitude of the electromagnetic vibrators 5 in the horizontal or vertical direction can change the size of angle 'a'. If the vibration phase difference of the electromagnetic vibrators 5 in the horizontal or vertical direction is changed to 180° (by changing the power phase sequence of the sinusoidal AC half-wave phase-shifting and cutoff controller 31 in the horizontal or vertical direction), the direction of the resultant force formed by the two will change to 180°-a. At that time, the conveying direction of the material will be reversed. At the same time, changing the amplitude of the electromagnetic vibrators 5 in the horizontal or vertical direction can also change the size of angle 'a'.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reversible electromagnetic vibrating feeder, characterized in that, include: The load-bearing body (1), the excitation frame (2), the electromagnetic vibrator pulse power supply control system (3), the single-degree-of-freedom leaf spring group (4), the electromagnetic vibrator (5), and the vibration isolation spring (6). The excitation frame (2) is used to connect the carrier (1) and the single-degree-of-freedom leaf spring group (4), and to receive the vibration force generated by the electromagnetic vibrator (5) transmitted by the single-degree-of-freedom leaf spring group (4), and to transmit the vibration force to the carrier (1). The carrier (1) transmits the combined vibration force to the material to realize the throwing motion of the material. The electromagnetic vibrator (5) is provided in multiple sets, and the multiple sets of electromagnetic vibrators (5) are arranged in the horizontal and vertical directions.

2. The reversible electromagnetic vibrating feeder according to claim 1, characterized in that: The carrier (1) is a trough or a round tube and any cross-section of a flowable material. The trough of the carrier (1) is made of sheet metal material after bending.

3. The reversible electromagnetic vibrating feeder according to claim 1, characterized in that: The excitation frame (2) is a rigid guarantee body for sheet metal laser blanking, bending and welding, which is used to provide overall strength guarantee.

4. The reversible electromagnetic vibrating feeder according to claim 1, characterized in that: The electromagnetic vibrator pulse power supply control system (3) includes two sets of sinusoidal AC half-wave phase-shifting and cutoff controllers (31) and an anti-interference distributor (32), as well as other standardized electrical components such as contactors. The two sets of sinusoidal AC half-wave phase-shifting and cutoff controllers (31) are set independently.

5. The reversible electromagnetic vibrating feeder according to claim 1, characterized in that: The single-degree-of-freedom leaf spring assembly (4) includes a leaf spring (41) and a spacer (42). The leaf spring (41) is made of metal, fiberglass board or carbon fiber board. The leaf spring (41) and the spacer (42) are fastened together by superimposed bolts.

6. The reversible electromagnetic vibrating feeder according to claim 1, characterized in that: The multiple sets of electromagnetic vibrators (5) are electrically connected to the electromagnetic vibrator pulse power supply control system (3) through wires. The electromagnetic vibrator pulse power supply control system (3) is used to control the multiple sets of electromagnetic vibrators (5).

7. The reversible electromagnetic vibrating feeder according to claim 1, characterized in that: The vibration isolation spring (6) is made of a rubber spring or a metal ordinary spring or other buffer spring.

8. The reversible electromagnetic vibrating feeder according to claim 1, characterized in that: The electromagnetic vibrator (5) in the horizontal direction can be a single unit or one unit in each of the left and right horizontal directions, and the electromagnetic vibrator (5) in the vertical direction can be composed of a single unit or multiple units distributed together.

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