Magnetic attraction grabbing device and electrolytic bath production line

Abstract

The invention relates to the technical field of hydrogen production, and provides a magnetic attraction grabbing device which comprises a carrier, a magnetic attraction assembly is arranged on the carrier, and the magnetic attraction assembly comprises a magnetic disc; the magnetic disk is provided with an adsorption surface and a mounting surface, the adsorption surface and the mounting surface are oppositely arranged, and the mounting surface is mounted on the carrier; the adsorption face is provided with at least two protrusions, the protrusions are sequentially arranged at intervals, and the end face size of the protrusions is smaller than the interval size between every two adjacent sets of protrusions in the distribution direction of the protrusions. And the adsorption surfaces of two adjacent magnetic disks generate a grabbing magnetic field. According to the grabbing device, upper-layer materials can be stably grabbed in a magnetic attraction mode, meanwhile, the purpose of automatically separating the upper-layer materials from lower-layer materials can be achieved, and the automation requirement of an electrolytic cell production line can be met.

Description

Technical Field

[0001] The invention relates to hydrogen production, and in particular to a magnetic suction grabbing device and an electrolyzer production line. Background Art

[0002] Since the electrodes of the electrolyzers in the field of hydrogen production are made of thin nickel wire mesh, the surface of which is sprayed with active coating, manual handling and assembly are currently used in production. As the demand for hydrogen production increases, automated assembly is required. However, due to the characteristics of the electrodes, which are mesh-shaped, very thin, coated on the surface, with thin woven nickel wire and weak magnetism, it is very difficult to separate and grab the materials in actual automated applications. Specifically:

[0003] The mesh structure cannot be grasped by vacuum method;

[0004] The surface is coated and the braided nickel wire is thin. Using clamping will damage the coating and easily cause the nickel wire to deform or break;

[0005] Weak magnetism, using conventional magnets to absorb, small magnetic force will easily cause it to fall off, large magnetic force will attract multiple pieces and make them easy to fall off during transportation. Summary of the invention

[0006] The purpose of the present invention is to provide a magnetic grabbing device and an electrolytic cell production line, which can at least solve some of the defects in the prior art.

[0007] To achieve the above object, the embodiment of the present invention provides the following technical solution: a magnetic grabbing device, comprising a carrier, a magnetic component is arranged on the carrier, and the magnetic component comprises a magnetic disk;

[0008] The magnetic disk has an adsorption surface and a mounting surface, the adsorption surface and the mounting surface are arranged opposite to each other, and the mounting surface is arranged on the carrier;

[0009] The adsorption surface has at least two protrusions, each of which is arranged in sequence and spaced apart, and along the distribution direction of each of the protrusions, the end face size of the protrusion is smaller than the spacing size between two adjacent groups of the protrusions;

[0010] The adsorption surfaces of two adjacent magnetic disks generate a grabbing magnetic field.

[0011] Furthermore, a groove is formed between two adjacent protrusions, and the depth of the groove is 2-10 mm.

[0012] Furthermore, a first groove or a second groove is formed between two adjacent protrusions, the first grooves and the second grooves are alternately distributed in sequence, each of the second grooves is located between two adjacent first grooves and the depth of the second groove is greater than that of the first groove.

[0013] Furthermore, the size of the end surface of the protrusion along the distribution direction is 1-10 mm.

[0014] Furthermore, each magnetic attraction assembly has an even number of magnetic disks, which correspond to each other in pairs.

[0015] Furthermore, a plurality of magnetic attraction areas are arranged on the carrier, each of the magnetic attraction areas is discretely distributed on the carrier, and at least one set of magnetic attraction components is arranged in each of the magnetic attraction areas.

[0016] Furthermore, some of the magnetic attraction areas are evenly spaced on a first circumference, and other parts of the magnetic attraction areas are evenly spaced on a second circumference. The first circumference is located within the second circumference and the two are concentric circles.

[0017] Furthermore, the number of magnetic attraction zones on the first circumference is not less than 4, and the number of magnetic attraction zones on the second circumference is not less than 8.

[0018] Furthermore, the distance between the first circumference and the second circumference is 300-1000 mm.

[0019] The present invention provides another embodiment, an electrolytic cell production line, including an electrode assembly station, wherein the above-mentioned magnetic suction grabbing device is arranged at the electrode assembly station.

[0020] Compared with the prior art, the beneficial effects of the present invention are: a magnetic grabbing device, which uses a magnetic disk to achieve magnetic grabbing of materials. The protrusion is the adsorption end that cooperates with the material, and the two magnetic disks cooperate to form a magnetic field to achieve the grabbing of the material; in addition, there is a large gap between two adjacent protrusions, and the end face size of the protrusion is controlled to be smaller than the gap size, so that when dealing with thin materials, it can ensure that the magnetic circuit closed loop is on the upper material as much as possible, reducing magnetic leakage, and avoiding the lower material from being grabbed synchronously when grabbing the upper material. Therefore, the magnetic grabbing device provided by the present invention can, on the one hand, provide sufficient magnetic force to ensure that the material will not fall easily during the grabbing and transportation process, and on the other hand, when grabbing, the magnetic force will not absorb the lower material, so as to achieve the purpose of grabbing and dividing the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a magnetic grabbing device provided in an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the magnetic field of the magnetic attraction component of the magnetic attraction grabbing device provided in an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of the structure of a magnetic disk from a first perspective of a magnetic suction grabbing device provided by an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the structure of a magnetic disk from a second viewing angle of the magnetic suction grabbing device provided by an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of the force applied to the magnetic suction grabbing device provided in an embodiment of the present invention when magnetically sucking materials. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1 as well as Figure 2 The embodiment of the present invention provides a magnetic grabbing device, which can grab and carry materials through magnetic force, especially thin metal mesh materials. Specifically, the grabbing device includes a carrier 1 and a magnetic component 2, wherein the carrier 1 is the basis of the grabbing device, a grabbing structure is arranged on the carrier 1, and the manipulator cooperates with the grabbing structure to move the grabbing device; the magnetic component 2 is the working part of the grabbing device, which is installed on the carrier 1 and can generate magnetic force, thereby adsorbing the material on the carrier 1, and the manipulator controls the carrier 1 to realize the transportation of the material.

[0028] The magnetic suction component 2 is refined, and it includes at least two magnetic disks 21. The so-called magnetic disk 21 is a disk-shaped structure with magnetism, and its thickness dimension is relatively small, and the overall structure is flat. The magnetic disk 21 has an adsorption surface and a mounting surface, which are two opposite surfaces of the magnetic disk 21. The mounting surface faces the side of the carrier 1, and the magnetic disk 21 is installed on the carrier 1 through the mounting surface. There are at least two protrusions 211 on the adsorption surface, and both extend in the direction away from the carrier 1. Of course, the projection of each protrusion 211 along the thickness direction of the magnetic disk 21 is located on the magnetic disk 21. There are at least two magnetic disks 21 of the magnetic suction component 2, and a magnetic field is generated between the adsorption surfaces of two adjacent magnetic disks 21, and the material is captured by the magnetic field. And when grabbing the material, the end face of the protrusion 211 contacts the material, thereby realizing the magnetic attraction of the material.

[0029] See also Figure 3 as well as Figure 4The protrusions 211 are distributed in sequence along the extension direction of the disk 21, and the direction is determined according to the shape of the disk 21. For example, when the disk 21 is circular, the direction may be the radial direction of the disk 21, and when the disk 21 is square, the direction may be the length or width direction of the disk 21. Thus, a groove is formed between two adjacent protrusions 211, and along the distribution direction of the protrusions 211, the end face size of the protrusion 211 is smaller than the groove size between two adjacent protrusions 211. In the preferred embodiment, the end face of the protrusion 211 is a rectangle, wherein the distribution direction of the protrusion 211 is the width direction of the end face, and the width dimension is much smaller than the length dimension, such as a tooth shape, so that the end face area of ​​the protrusion 211 used for magnetically absorbing materials is smaller.

[0030] In the present invention, the end surface area of ​​the protrusion 211 is relatively small, and the specific size can be determined according to the material, so that the magnetic circuit closed loop generated by the cooperation between two adjacent protrusions 211 is mainly located on the material to be grasped, which can reduce magnetic leakage, and thus make the magnetic disk 21 have no magnetic force or very small magnetic force on the material below the material to be grasped, that is, when the grasping device grasps the material by magnetic force, the material below the material will not be synchronously magnetically attracted, so as to achieve the purpose of grasping and dividing the material. In a preferred embodiment, the end surfaces of each protrusion 211 of the magnetic disk 21 are all located in the same plane, so that the magnetic force at the end surfaces of each protrusion 211 is similar.

[0031] See also Figure 2 as well as Figure 3In one embodiment, the depth of the groove between two adjacent protrusions 211 is limited, and can be specifically 2-10 mm. In the present invention, the depth of the groove refers to the distance between the bottom surface of the groove and the end surface of the corresponding protrusion 211. A magnetic circuit closed loop is also formed between the grooves of two adjacent magnetic disks 21. When the magnetic disk 21 is working, the end surface of the protrusion 211 contacts the material, while the bottom of the groove is separated from the material, and an air gap space is formed between the two. By adjusting the depth of the groove, the magnetic circuit closed loop at the groove can only pass through the upper material, and will not pass through the lower material. Therefore, although the bottom surface of the groove is larger than the end surface of the protrusion 211, and the magnetic force generated is also relatively large, by controlling the depth of the groove, the bottom surface of the groove can be made to magnetically attract the material, and the synchronous grabbing of the lower material can be avoided. In the present embodiment, when the object of the grasping device is the metal mesh of the electrode of the electrolytic cell, the depth of the groove is limited to 2-10mm. When the depth is less than 2mm, the magnetic field radiation depth (distance from the end face of the protrusion 211) generated by the bottom surface of the groove is large, and its magnetic circuit closed loop will pass through the second layer of metal mesh, that is, the magnetic suction component 2 will produce a large magnetic force on the second layer of metal mesh, which may be difficult to achieve the purpose of grasping and dividing materials; and when the depth is greater than 10mm, the magnetic field radiation depth generated by the magnetic disk 21 at the groove is small, and the magnetic force generated by it has a relatively small effect on the first layer of metal mesh, and it is difficult to ensure the stability of the magnetic metal mesh during the handling process of the grasping device. Based on the above-mentioned metal mesh material, the end face width dimension of each protrusion 211 is 1-10mm, and the width dimension is the dimension of the distribution direction of the protrusion 211. By controlling the end face area of ​​the protrusion 211, it is avoided that the protrusion 211 generates a large magnetic force, and the material division effect is guaranteed.

[0032] To optimize the above embodiment, the disk 21 has a plurality of protrusions 211, and two adjacent protrusions 211 form a first groove 212 or a second groove 213, and the first grooves 212 and the second grooves 213 are alternately distributed in sequence, and each second groove 213 is located between two adjacent first grooves 212. Specifically, the protrusions 211 are numbered along their distribution direction. When there are four groups of protrusions 211, the protrusions 211 are numbered 1, 2, 3, and 4 in sequence, wherein the first groove 212 is formed between No. 1 and No. 2, the second groove 213 is formed between No. 2 and No. 3, and the first groove 212 is formed between No. 3 and No. 4. The depth of the second groove 213 is greater than that of the first groove 212. Of course, the depth difference between the two is relatively small. The so-called depth refers to the distance from the bottom of the groove to the end face of the protrusion 211. This shows that the magnetic field depth corresponding to the second groove 213 is slightly smaller than the magnetic field depth corresponding to the first groove 212. Of course, the magnetic field depths corresponding to the two should be smaller than the protrusion 211. In this way, the magnetic field strength at the corresponding material of each part of the disk 21 is not the same. The protrusion 211 is in contact with the material and is the strongest part of the magnetic field. The second groove 213 is farthest from the material and its magnetic field acting on the material is the weakest. Based on The magnetic field of the magnetic disk 21 at various locations on the material is distributed in the above-mentioned manner; on the other hand, the area size of the first groove 212 and the second groove 213 are both larger than the tooth-shaped area of ​​the protrusion 211, so that although the magnetic field depth of the protrusion 211 is large, when grabbing the material, the magnetic field of the protrusion 211 is very likely to extend to the lower layer of material, but due to its small area, the magnetic force generated by the protrusion 211 on the lower layer of material is very small, and the magnetic field depth of the first groove 212 and the second groove 213 is small, so that both of them also mainly act on the upper layer of material, and the magnetic force on the lower layer of material is also relatively small. Therefore, by adopting this distribution method, on the one hand, it can ensure that the magnetic disk 21 generates a large magnetic force on the upper layer of material, so that the grabbing device can stably magnetically attract the upper layer of material, and on the other hand, it can prevent the magnetic disk 21 from generating a large magnetic force on the lower layer of material, ensuring the separation of the upper layer of material from the lower layer of material when grabbing. In addition, the magnetic disks 21 of the magnetic attraction component 2 on the carrier 1 are usually arranged side by side, especially the two adjacent magnetic disks 21 for generating the grabbing magnetic field are arranged side by side. From the perspective of magnetic field distribution, the magnetic field strength between the two magnetic disks 21 is relatively large. Therefore, it is considered to set a second groove 213 between the two first grooves 212 of the magnetic disk 21 (generally speaking, the magnetic disk 21 is provided with two first grooves 212 and one second groove 213, and the second groove 213 is located in the middle position of the magnetic disk 21) to control the magnetic field radiation depth between the two magnetic disks 21 to avoid excessive magnetic field acting on the lower material.

[0033] See again Figure 1 as well as Figure 2In one embodiment, a plurality of magnetic attraction zones are arranged on the carrier 1, and each magnetic attraction zone is discretely distributed on the carrier 1. The so-called discrete distribution here means that when the grabbing device grabs the material, each magnetic attraction zone is relatively evenly distributed on the material. At least one group of magnetic attraction components 2 is arranged in each magnetic attraction zone, and each magnetic attraction component 2 includes at least two magnetic disks 21. Each magnetic attraction component 2 located in the same magnetic attraction zone is arranged side by side in a certain direction, and arranged along the distribution direction of the protrusions 211 perpendicular to the magnetic disk 21. The two magnetic disks 21 in the magnetic attraction component 2 for generating the grabbing magnetic field are arranged along the arrangement direction perpendicular to the magnetic attraction component 2, that is, along the distribution direction of each protrusion 211 of the magnetic disk 21. Of course, in each magnetic attraction zone, along the arrangement direction of the magnetic attraction component 2, the magnetic disk 21 also has another adjacent magnetic disk 21, and a magnetic field can be generated between the two. Therefore, each magnetic attraction zone has a wider magnetic field distribution, so that the magnetic attraction zone can generate a more balanced distribution of magnetic force on the material. Specifically, each magnetic component 2 has an even number of disks 21 that correspond to each other in pairs. For example, the magnetic component 2 includes two disks 21, and the two disks 21 are arranged along the distribution direction of the protrusion 211. When there are four disks 21, two of them correspond to each other as a group, and a group of two disks 21 is arranged along the direction of the protrusion, and two groups of disks 21 are arranged along the distribution direction of the protrusion 211 perpendicular to the disks 21 (the distribution method of the magnetic component 2 in the magnetic attraction area).

[0034] In the preferred embodiment, the magnetic attraction areas are also distributed according to a certain rule, such as an annular distribution, in which some magnetic attraction areas are evenly spaced on the first circumference, and other parts of the magnetic attraction areas are evenly spaced on the second circumference, and the first circumference and the second circumference are concentric circles. Of course, the magnetic attraction areas can also be distributed in three or more layers of concentric circles, and each magnetic attraction area serves as a strong magnetic point of the grasping device. The strong magnetic points distributed in this concentric circle array can make the distribution more uniform, and the distribution area is relatively wide, and the grasping device can stabilize the material with a large magnetic attraction area. When it is a two-layer concentric circle distribution, the magnetic attraction areas on the first circumference are not less than 4, and the magnetic attraction areas on the second circumference are not less than 8, so as to ensure the magnetic attraction stability of the grasping device. In addition, when the material is a thin metal mesh of the motor of the electrolytic cell, the spacing between the first circumference and the second circumference is set to 300-1000mm to ensure that the peeling force generated by the gravity of the thin metal mesh between the first circumference and the second circumference will not cause the thin metal mesh to separate from each magnetic disk 21. When the distance between the two is greater than 1000mm, the area without magnetic attraction between the two circles is too large, and the distribution of the magnetic attraction area is too dispersed. When the distance between the two is less than 300mm, the area without magnetic attraction outside the two circles is too large, and the distribution of the magnetic attraction area is too concentrated. Both situations may reduce the firmness of the magnetic attraction of the material by the grasping device during transportation. In addition, for the second circle, the edge size of the outermost magnetic disk 21 and the edge of the metal mesh is less than 100mm, and due to the spacing requirement between the first circle and the second circle, the distribution density of the magnetic disk 21 on the first circle is greater than the distribution density of the magnetic disk 21 on the second circle. When a grasping device is used to grasp the metal mesh, the first circle is close to the middle position of the metal mesh, and the second circle is close to the edge position of the metal mesh. The magnetic force of the grasping device on the middle position of the metal mesh is greater than the magnetic force on the edge position. For details, please refer to the attached Figure 5 Under the premise that the number of disks 21 is certain, this arrangement has a higher grasping firmness.

[0035] The embodiment of the present invention further provides an electrolytic cell production line, including an electrode assembly station, and the electrode assembly station is provided with the above-mentioned grabbing device. In this embodiment, the above-mentioned grabbing device is applied to the electrolytic cell production line, especially the electrode assembly station, which can not only ensure the firmness of the metal mesh during the handling process, but also realize the automatic material separation between the upper and lower metal meshes during the grabbing process, which improves the automation performance of the electrode assembly process on the one hand, and improves the assembly efficiency of the entire station on the other hand.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetic grabbing device, comprising a carrier, characterized in that: A magnetic attraction component is arranged on the carrier, and the magnetic attraction component includes at least two magnetic disks; The magnetic disk has an adsorption surface and a mounting surface, the adsorption surface and the mounting surface are arranged opposite to each other, and the mounting surface is arranged on the carrier; The adsorption surface has at least two protrusions, each of which is arranged in sequence and spaced apart, and along the distribution direction of each of the protrusions, the end face size of the protrusion is smaller than the spacing size between two adjacent groups of the protrusions; The adsorption surfaces of two adjacent magnetic disks generate a grabbing magnetic field.

2. The magnetic grabbing device according to claim 1, characterized in that: A groove is formed between two adjacent protrusions, and the depth of the groove is 2-10 mm.

3. The magnetic grabbing device according to claim 2, characterized in that: A first groove or a second groove is formed between two adjacent protrusions, the first grooves and the second grooves are alternately distributed in sequence, each of the second grooves is located between two adjacent first grooves and the depth of the second groove is greater than that of the first groove.

4. The magnetic grabbing device according to claim 1, characterized in that: The size of the end surface of the protrusion along the distribution direction is 1-10 mm.

5. The magnetic grabbing device according to claim 1, characterized in that: Each magnetic attraction assembly has an even number of magnetic disks corresponding to each other.

6. The magnetic grabbing device according to claim 1, characterized in that: A plurality of magnetic attraction areas are arranged on the carrier, each of the magnetic attraction areas is discretely distributed on the carrier, and at least one group of magnetic attraction components is arranged in each of the magnetic attraction areas.

7. The magnetic grabbing device according to claim 6, characterized in that: Part of the magnetic attraction areas are evenly spaced and distributed on the first circumference, and another part of the magnetic attraction areas are evenly spaced and distributed on the second circumference. The first circumference is located inside the second circumference and the two are concentric circles.

8. The magnetic grabbing device according to claim 7, characterized in that: The number of magnetic attraction zones on the first circumference is not less than 4, and the number of magnetic attraction zones on the second circumference is not less than 8.

9. The magnetic grabbing device according to claim 7, characterized in that: The distance between the first circumference and the second circumference is 300-1000 mm.

10. An electrolytic cell production line, comprising an electrode assembly station, characterized in that: A magnetic suction grabbing device as claimed in any one of claims 1 to 9 is arranged at the electrode assembly station.

Images