Magnetic strips, magnetic suction cup panels and magnetic suction cups

Abstract

The embodiment of the present invention discloses a magnetic strip plate for assembling a magnetic suction cup panel, a magnetic suction cup panel using the magnetic strip plate, and a magnetic suction cup. The magnetic suction cup panel can conduct the magnetic flux generated by the magnetic suction cup base upward to adsorb the workpiece. The upper surface of the magnetic suction cup base is composed of multiple magnetic conductive areas and non-magnetic conductive areas. The magnetic strip plate as a whole is smoothly extended upward from the rectangular bottom surface to the wavy upper surface through an irregular structure. The bottom surface of the magnetic strip plate completely covers a magnetic conductive area of ​​the same polarity, and in the length direction of the magnetic strip plate, the maximum width of its upper surface is greater than the maximum width of the bottom surface. The present invention can not only maintain the magnetic flux density and magnetic conductive area equivalent to the base to the maximum extent, but also reduce the pole pitch at the same time, and has a high practical value.

Description

Technical Field

[0001] The invention relates to the field of magnetic clamping, and in particular to a magnetic conductive strip plate, a magnetic suction cup panel device and a magnetic suction cup. Background Art

[0002] At present, the magnetic suction method is widely used in the mechanical field. Most magnetic suction cups are composed of a base and a panel. The base is used to generate magnetic flux. Magnetic devices are divided into permanent magnets, electromagnetics and electro-permanent magnets according to their working principles. They are divided into bipolar magnetic devices and unipolar magnetic devices according to magnetic circuit design. Electro-permanent magnets are divided into magnetic differential and non-magnetic differential types according to the type of magnet.

[0003] An electromagnetic holding device refers to a holding device with an iron core and a coil surrounding the iron core. When a DC current continuously passes through the coil, the iron core generates a magnetic flux and the holding device appears magnetic to the outside. When the current stops, the magnetic flux disappears and the holding device no longer appears magnetic to the outside.

[0004] The electro-permanent magnetic holding device has the advantages of no electricity, no thermal deformation, strong suction, etc., and is now widely used in the field of magnetic clamping and lifting as an efficient holding method. According to the type of magnet, there are magnetic differential type and non-magnetic differential type.

[0005] The so-called magnetic differential type permanent magnetic chuck refers to a circuit composed of two different magnets inside the chuck, generally composed of NdFeB with higher coercivity and AlNiCo with lower coercivity. The direction of the magnetic lines of AlNiCo can be determined by the direction of the current in the external coil. When the polarity of the contact surface between the two magnets and the core block is the same, magnetism is displayed to the outside. When the polarity of the contact surface between the two magnets and the core block is opposite, the two are neutralized and no magnetism is displayed to the outside. However, since the magnetic poles must be separated by non-magnetic materials to prevent magnetic short circuits between the magnetic poles, epoxy resin or other non-magnetic materials are usually used.

[0006] The so-called non-magnetic differential type permanent magnetic chuck refers to a circuit composed of only one kind of magnet inside the chuck, which is generally composed of AlNiCo with low coercive force. The direction of the magnetic force lines of AlNiCo can be determined by the direction of the current in the external coil. When the excitation coil excites AlNiCo, it shows magnetism to the outside. When the excitation coil demagnetizes AlNiCo through oscillation, it does not show magnetism to the outside. However, since the magnetic poles must be separated by non-magnetic materials to prevent magnetic short circuits between the magnetic poles, the materials usually used are epoxy resin or other non-magnetic materials.

[0007] The panel is usually made of two or more materials, including magnetic conductive materials and non-magnetic conductive materials. The functions of the panel include:

[0008] 1) Conducting magnetic flux: In the application scenario of the magnetic chuck, the panel is located between the base and the workpiece. The magnetic flux generated by the base is conducted to the workpiece through the panel, so that the magnetic lines of force penetrate the workpiece to form a loop, thereby achieving the purpose of adsorbing the workpiece.

[0009] 2) Change the pole pitch and magnetic circuit: When the magnetic flux generated by the base is transmitted through the panel, the pole pitch and polarity distribution position can be changed according to the different designs of the panel (the pole pitch refers to the distance between two adjacent magnetic poles of different polarities). Due to the characteristics of magnetism, the workpiece must contact two magnetic poles of different polarities at the same time to achieve the best adsorption effect. Therefore, when adsorbing smaller workpieces, the pole pitch of the magnetic chuck is required to be smaller than the size of the workpiece. The panel has the function of changing the pole pitch and magnetic circuit, which can increase the applicability of the magnetic chuck to workpieces of different sizes.

[0010] 3) Protect the base: Workpieces often bump into each other when placed on the magnetic chuck. During the processing, tools, iron filings, etc. can also cause scratches, wear and other damage to the magnetic chuck. Liquids such as cutting fluids are often present in the application scenarios of magnetic chucks. If leakage occurs, it is easy to cause a short circuit in the coil. The presence of the panel can protect the base from damage and improve the waterproof performance, thereby increasing the service life of the magnetic chuck.

[0011] In the prior art, the magnetic chuck can retain the maximum magnetic flux density and magnetic conductive area of ​​the base without a panel, but the pole pitch cannot be changed. The panel of the traditional magnetic chuck that can change the pole pitch has the following disadvantages:

[0012] 1) In order to change the magnetic circuit and reduce the pole pitch, the contact area between the magnetic strip on the panel and the magnetic area of ​​the base is reduced. The magnetic flux generated by the base cannot be transmitted to the panel to the maximum extent. If the magnetic area on the upper surface of the panel (i.e. the area that can conduct magnetism) is maintained unchanged, the magnetic flux density on the panel will inevitably decrease, and the magnetic force per unit area on the panel will decrease, which cannot meet the use requirements;

[0013] 2) In order to keep the magnetic flux density of the panel to meet the use requirements, the traditional magnetic panel can also reduce the area on the upper surface of the magnetic strip to ensure the magnetic flux density of the magnetic conductive area on the upper surface of the panel. However, this will lead to an increase in the non-magnetic conductive area on the upper surface of the panel, limiting the applicable scenarios or reducing the overall suction force;

[0014] Conversely, if one wants to maintain both the magnetic flux density and the magnetic conductive area on the upper surface of the panel, one has to maintain a larger pole pitch, which also greatly limits the applicable scenarios.

[0015] Therefore, the traditional magnetic suction cup panel cannot meet the three requirements of maintaining the same magnetic flux density and magnetic conductive area as the base at the same time, and reducing the pole pitch. It is necessary to design a magnetic suction cup panel that can maintain the same magnetic flux density and magnetic conductive area as the base at the same time to ensure that the panel as a whole has the strongest holding force, and can effectively reduce the pole pitch to meet the holding requirements of workpieces of various shapes. Summary of the invention

[0016] An embodiment of the present invention discloses a magnetic conductive strip plate for assembling a magnetic suction cup panel. The magnetic suction cup panel can conduct the magnetic flux generated by the magnetic suction cup base upward to adsorb the workpiece. The upper surface of the magnetic suction cup base is composed of multiple magnetic conductive areas and non-magnetic conductive areas. The magnetic conductive strip plate as a whole is smoothly extended upward from a rectangular bottom surface to a wavy upper surface through an irregular structure. The bottom surface is completely covered with a magnetic conductive area of ​​the same polarity. In the length direction of the magnetic conductive strip plate, the maximum width of the upper surface is greater than the maximum width of the bottom surface.

[0017] Preferably, the area of ​​the upper surface of the magnetic conductive strip is equal to or smaller than the area of ​​the bottom surface of the magnetic conductive strip.

[0018] Furthermore, the irregular structure is a plurality of grooves and a plurality of ridges alternately located on the left and right sides of the magnetic conductive strip.

[0019] Preferably, the top of the ridge is arc-shaped or trapezoidal, and the lengths of the ridges extending to the left and right sides of the magnetic conductive strip are equal.

[0020] Furthermore, the magnetic conductive strip is integral or segmented in its length direction.

[0021] A magnetic suction cup panel is also disclosed in an embodiment of the present invention, which is used to conduct the magnetic flux generated by the magnetic suction cup base to adsorb the workpiece. The magnetic suction cup panel is assembled by a plurality of magnetic conductive strips as described above, which are cross-nested and arranged side by side. An isolation gap is set between any two magnetic conductive strips, and the isolation gap is filled with non-magnetic conductive materials.

[0022] Preferably, the total area of ​​the upper surfaces of the plurality of magnetic conductive strips assembled into the magnetic suction cup panel is equal to or smaller than the total area of ​​the bottom surfaces.

[0023] The present invention also discloses a magnetic chuck, comprising:

[0024] The magnetic chuck base comprises a base, a magnetic source body and a non-magnetic conductive part located between the magnetic source body and the base, wherein the upper surfaces of the magnetic source body and the base constitute a plurality of magnetic conductive areas of the magnetic chuck base, and the upper surface of the non-magnetic conductive part constitutes a non-magnetic conductive area of ​​the magnetic chuck base;

[0025] The magnetic suction cup panel is placed on the magnetic suction cup base. The magnetic suction cup panel is assembled by a plurality of the above-mentioned magnetic conductive strips which are cross-nested and arranged side by side. An isolation gap is set between any two magnetic conductive strips, and the isolation gap is filled with non-magnetic conductive materials.

[0026] The bottom surface of any magnetic conductive strip constituting the magnetic suction cup panel completely covers a magnetic conductive area of ​​the same polarity of the corresponding magnetic suction cup base, so as to conduct the magnetic flux generated by the magnetic suction cup base upward to the workpiece to be adsorbed.

[0027] Furthermore, the magnetic source body in the magnetic chuck is composed of an iron core and a coil surrounding the iron core.

[0028] Preferably, the magnetic source body in the magnetic chuck is composed of a reversible magnet and one or more excitation coils surrounding the reversible magnet.

[0029] Furthermore, the magnetic source body also includes an iron core placed on the reversible magnet and an irreversible magnet surrounding the iron core.

[0030] In summary, the embodiments of the present invention disclose a magnetic suction cup panel and a magnetic suction cup. Since the bottom surface of the magnetic conductive strip completely covers a magnetic conductive area of ​​the same polarity, the magnetic flux generated by the magnetic suction cup base can be conducted to the maximum extent. At the same time, since the magnetic conductive strip as a whole smoothly extends upward from the rectangular bottom surface to the wavy upper surface through an irregular structure, on the one hand, the pole pitch of the magnetic suction cup panel is greatly reduced compared with the pole pitch of the base, which can not only adsorb large-sized workpieces, but also meet the needs of adsorbing small-sized workpieces. On the other hand, the magnetic conductive area of ​​the upper surface will not be reduced. Therefore, when adsorbing workpieces, the present invention can both maintain the magnetic flux density and magnetic conductive area equivalent to the base to the maximum extent and reduce the pole pitch, which has high practical value.

[0031] In order to make the above contents of the present invention more clearly understood, preferred embodiments are given below and described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be described below in conjunction with the accompanying drawings:

[0033] Figure 1-1 It is a schematic diagram of the upper surface of the overall structure of a magnetic conductive strip plate for assembling a magnetic suction cup panel disclosed in the first embodiment of the present invention;

[0034] Figure 1-2 It is a schematic diagram of the bottom surface of the overall structure of a magnetic conductive strip plate for assembling a magnetic suction cup panel disclosed in the first embodiment of the present invention;

[0035] Figure 2-1 It is a schematic diagram of the upper surface of the overall structure of a magnetic conductive strip plate for assembling a magnetic suction cup panel disclosed in the second embodiment of the present invention;

[0036] Figure 2-2 It is a schematic diagram of the overall structure bottom surface of a magnetic conductive strip plate for assembling a magnetic suction cup panel disclosed in a second embodiment of the present invention;

[0037] Figure 3-1 It is a schematic diagram of the upper surface of the overall structure of a magnetic suction cup panel disclosed in the third embodiment of the present invention;

[0038] Figure 3-2 It is a schematic diagram of the bottom surface of the overall structure of a magnetic suction cup panel disclosed in the third embodiment of the present invention;

[0039] Figure 4-1 It is a schematic diagram of the overall structure of the electromagnetic magnetic chuck disclosed in the fourth embodiment of the present invention;

[0040] Figure 4-2 to Figure 4-4 It is a schematic diagram of the magnetic circuit state of the electromagnetic magnetic chuck disclosed in the fourth embodiment of the present invention when adsorbing a workpiece;

[0041] Figure 4-5 to Figure 4-7 It is a schematic diagram of the magnetic circuit state of the electromagnetic magnetic chuck disclosed in the fourth embodiment of the present invention when releasing the workpiece;

[0042] Figure 5-1 It is a schematic diagram of the overall structure of the non-magnetic differential magnetic chuck disclosed in the fifth embodiment of the present invention;

[0043] Figure 5-2 to Figure 5-4 It is a schematic diagram of the magnetic circuit state of the non-magnetic differential magnetic chuck disclosed in the fifth embodiment of the present invention when adsorbing a workpiece;

[0044] Figure 5-5 to Figure 5-7 It is a schematic diagram of the magnetic circuit state of the non-magnetic differential magnetic chuck disclosed in the fifth embodiment of the present invention when releasing the workpiece;

[0045] Figure 6-1 It is a schematic diagram of the overall structure of the magnetic differential magnetic chuck disclosed in the sixth embodiment of the present invention;

[0046] Figure 6-2 to Figure 6-4 It is a schematic diagram of the magnetic circuit state of the magnetic differential magnetic chuck disclosed in the sixth embodiment of the present invention when adsorbing a workpiece;

[0047] Figure 6-5 to Figure 6-7 Schematic diagram of the magnetic circuit state of the magnetic differential magnetic chuck disclosed in the sixth embodiment of the present invention when releasing the workpiece. DETAILED DESCRIPTION

[0048] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0049] Now, exemplary embodiments of the present invention are described with reference to the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely and to fully convey the scope of the present invention to those skilled in the art. The terms used in the exemplary embodiments shown in the accompanying drawings are not intended to limit the present invention. In the accompanying drawings, the same units / elements are marked with the same reference numerals.

[0050] Unless otherwise specified, the terms (including technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it is understood that the terms defined in commonly used dictionaries should be understood to have the same meanings as those in the context of the relevant fields, and should not be understood as idealized or overly formal meanings.

[0051] First embodiment

[0052] like Figure 1-1 and Figure 1-2 As shown, the first embodiment of the present invention discloses a magnetic strip 100 for assembling a magnetic suction cup panel. The magnetic suction cup panel can conduct the magnetic flux generated by the magnetic suction cup base upward to adsorb the workpiece. The upper surface of the magnetic suction cup base is composed of multiple magnetic conductive areas and non-magnetic conductive areas. The magnetic strip 100 as a whole is composed of a rectangular bottom surface 10 that smoothly extends upward to a wavy upper surface 20 through an irregular structure. The bottom surface 10 completely covers a magnetic conductive area of ​​the same polarity. In the length direction of the magnetic strip, the maximum width of the upper surface 20 is greater than the maximum width of the bottom surface 10.

[0053] Specifically, the rectangular bottom surface of the magnetic conductive strip 100 of the present embodiment covers a magnetic conductive area of ​​the same polarity of the magnetic suction cup base, and can conduct the magnetic flux generated by the magnetic suction cup base to the workpiece when the magnetic suction cup base is excited, so that the magnetic lines of force penetrate the workpiece to form a loop, thereby adsorbing the workpiece on the magnetic suction cup panel; similarly, when the magnetic suction cup base is demagnetized, the magnetic flux of the magnetic conductive strip also disappears, thereby releasing the workpiece from the magnetic suction cup panel. The rectangular bottom surface of the magnetic conductive strip 100 completely covers a magnetic conductive area of ​​the same polarity of the magnetic suction cup base, including two situations: one is covering the top of the base of the magnetic suction cup base, and the other is covering the top of the magnetic source. In the first case, the magnetic conductive strip can conduct all the magnetic flux generated by the base. In the second case, the bottom surface of the base portion covered by the two ends of the magnetic conductive strip is subjected to magnetic isolation treatment to avoid magnetic short circuit between the magnetic source and the base. The magnetic conductive strip will not conduct the magnetic flux generated by the base, but only conduct all the magnetic flux generated by the magnetic source. Therefore, in general, the rectangular bottom surface of the magnetic strip completely covers a magnetic conductive area of ​​the same polarity, which can conduct the magnetic flux generated by the magnetic suction cup base to the maximum extent, and the total amount of magnetic flux will not be reduced.

[0054] Furthermore, the magnetic strip as a whole extends smoothly upward from the rectangular bottom surface to the wavy upper surface through an irregular structure, so that a certain magnetic strip can be nested with another adjacent magnetic strip with a gap. On the one hand, when excited, any two adjacent wavy protrusions have different magnetic polarities, thereby greatly reducing the distance between the two magnetic poles on the upper surface of the magnetic strip. When adsorbing the workpiece, the workpiece can easily contact the two magnetic strips with different polarities at the same time. On the other hand, the magnetic area on the upper surface of the magnetic strip will not be reduced, so that the magnetic pole distance between the two magnetic strips with different polarities can be effectively reduced while maintaining the magnetic flux density and the magnetic area. It can adsorb both large-sized workpieces and small-sized workpieces. Therefore, this embodiment has very good application value.

[0055] It is worth noting that in the length direction of the magnetic strip 100, the maximum width of the upper surface 20 of the magnetic strip 100 is greater than the maximum width of the bottom surface 10. In this way, a convex and concave wave shape can be formed on the upper surface of the magnetic strip, which facilitates the cross-nesting and assembly of the magnetic strip with another adjacent magnetic strip of different polarity to reduce the pole pitch.

[0056] As a preferred embodiment, the area of ​​the upper surface 20 of the magnetic conductive strip 100 is equal to the area of ​​the bottom surface 10 of the magnetic conductive strip 100. The bottom surface 10 of the magnetic conductive strip 100 completely covers a magnetic conductive area of ​​the same polarity of the magnetic chuck. Since the magnetic holding force per unit area is proportional to the square of the magnetic flux density (i.e., the magnetic flux per unit area), when excited, the magnetic flux generated by the magnetic conductive area of ​​the magnetic chuck base is conducted upward to the upper surface 20 of the magnetic conductive strip via the bottom surface 10 of the magnetic conductive strip. If the area of ​​the upper surface 20 is larger than the area of ​​the bottom surface 10, the magnetic flux per unit area conducted upward will be weakened due to the area dispersion, thereby reducing the magnetic flux density on the upper surface of the magnetic conductive strip, resulting in a faster reduction in the holding force per unit area of ​​the upper surface. Theoretically, the area of ​​the upper surface 20 of the magnetic conductive strip 100 can be slightly smaller than the area of ​​the bottom surface 10 of the magnetic conductive strip 100. When the area of ​​the upper surface 20 is smaller than the area of ​​the bottom surface 10, the magnetic flux per unit area conducted upward will not be weakened, and the holding force per unit area can be maintained. Therefore, it is necessary to maintain the area of ​​the upper surface 20 of the magnetic conductive strip 100 equal to or slightly smaller than the area of ​​the bottom surface 10 of the magnetic conductive strip 100 covering the same polarity magnetic conductive area of ​​the magnetic suction cup base, so as to maintain the maximum magnetic flux density and magnetic conductive area of ​​the magnetic conductive strip at the same time, so that the magnetic conductive strip as a whole has the maximum holding force.

[0057] As a preferred embodiment, Figure 1-1 and Figure 1-2As shown, the irregular structure extending smoothly from the bottom surface 10 of the magnetic conductive strip 100 to its wavy upper surface 20 is a plurality of grooves 30 and a plurality of ridges 40 staggered on the left and right sides of the magnetic conductive strip, so that it is convenient to cross-nest and assemble with another adjacent magnetic conductive strip. Furthermore, the horizontal width of any ridge 40 gradually decreases from the root to the end, so that a gap for filling non-magnetic conductive materials can be reserved between the two mutually nested magnetic conductive strips 100. The horizontal width of the ridge 40 of this embodiment gradually decreases from the root to the end, so that when assembling the magnetic suction cup panel, the ridges 40 of the two mutually nested magnetic conductive strips 100 will not be tightly engaged, and an isolation space will be reserved between any two adjacent ridges 40 to fill non-magnetic conductive materials.

[0058] Furthermore, the two side surfaces of any ridge 40 can be vertical from bottom to top, and the vertical surface design is more convenient in processing technology; the two side surfaces of any ridge 40 can also be inwardly inclined surfaces from bottom to top. The reason for the design of the inclined surface is that the non-magnetic material is small at the top and large at the bottom. When it expands due to heat and contracts due to cold, the non-magnetic material reduces outward expansion and affects the flatness of the holding surface.

[0059] As a more preferred embodiment, the lengths of the plurality of ridges 40 extending to the left and right sides of the magnetic conductive strip are equal, so that the assembly of each magnetic conductive strip is more flexible and convenient for processing and production.

[0060] In this embodiment, the top shape of the ridge 40 can be as follows: Figure 1-1 The arc shape shown in the figure, that is, the top of the convex rib 40 is a smoothly transitioned arc curve, and the shape of the top of the convex rib 40 can also be set to a trapezoid, that is, the top of the convex rib 40 has two sharp obtuse angles. Those skilled in the art can imagine that the shape of the convex rib 40 is not limited to the embodiment exemplified in this embodiment, and can also be designed in many other shapes with the same effect, which are all summarized and disclosed in the embodiments of the present invention.

[0061] As a preferred embodiment, the magnetic conductive strip 100 of the first embodiment of the present invention can be an integrally formed strip in its length direction, or it can be a plurality of segmented strips connected and combined with each other. When it is composed of a plurality of strips connected and combined with each other, the bottom surfaces of the plurality of segmented strips together constitute the bottom surface of the magnetic conductive strip 100, so that the bottom surfaces of the plurality of segmented strips together cover a magnetic conductive area of ​​the same polarity of the magnetic suction cup.

[0062] The magnetic conductive strip plate disclosed in the first embodiment of the present invention can simultaneously maintain the magnetic flux density and magnetic conductive area equivalent to those of the base, and can effectively reduce the pole pitch to meet the holding requirements of workpieces of various shapes without being limited by the usage scenario.

[0063] Second embodiment

[0064] like Figure 2-1 and Figure 2-2 As shown, the second embodiment of the present invention discloses a magnetic conductive strip plate 200 for assembling a magnetic suction cup panel. Figure 2-1 is a top view of the magnetic conductive strip plate 200, Figure 2-2 This is a bottom view of the magnetic strip 200. The magnetic suction cup panel can conduct the magnetic flux generated by the magnetic suction cup base upward to adsorb the workpiece. The upper surface of the magnetic suction cup base is composed of multiple magnetic conductive areas and non-magnetic conductive areas. The left or right side of the magnetic strip 200 is smoothly extended upward from the rectangular bottom surface 10 through an irregular structure to the wavy upper surface 20. The bottom surface 10 completely covers a magnetic conductive area of ​​the same polarity. In the length direction of the magnetic strip, the maximum width of the upper surface 20 is greater than the maximum width of the bottom surface 10.

[0065] The difference between this embodiment and the first embodiment is that only one side of the magnetic conductive strip 200 of this embodiment smoothly extends upward from the rectangular bottom surface 10 to the wavy upper surface 20 through an irregular structure, and the corresponding bottom surface of the other side extends vertically upward to the upper surface, that is, the corresponding side surface of the other side is a vertical rectangular surface. Only one side of the magnetic conductive strip of this embodiment can be cross-nested with the adjacent magnetic conductive strip, and can be used to assemble the edge of the magnetic suction cup panel. After assembly, the magnetic conductive strip of this embodiment is mostly placed above the base of the magnetic suction cup, and the bottom surface completely covers the upper surface of the base of the magnetic suction cup.

[0066] Specifically, the rectangular bottom surface of the magnetic conductive strip 200 of the present embodiment covers the magnetic conductive area of ​​the magnetic suction cup base, and can conduct the magnetic flux generated by the magnetic suction cup base to the workpiece when the magnetic suction cup base is excited, so that the magnetic lines of force penetrate the workpiece to form a loop, thereby adsorbing the workpiece on the magnetic suction cup panel; similarly, when the magnetic suction cup base is demagnetized, the magnetic flux of the magnetic conductive strip also disappears, thereby releasing the workpiece from the magnetic suction cup panel. The rectangular bottom surface of the magnetic conductive strip 200 completely covers a magnetic conductive area of ​​the same polarity of the magnetic suction cup base, including two situations: one is covering the top of the base of the magnetic suction cup base, and the other is covering the top of the magnetic source body. In the first situation, the present embodiment is that the magnetic conductive strip can conduct all the magnetic flux generated by the base. Therefore, the rectangular bottom surface of the magnetic conductive strip completely covers a magnetic conductive area of ​​the same polarity, which can conduct the magnetic flux generated by the magnetic suction cup to the maximum extent, and the total amount of magnetic flux will not be reduced.

[0067] Furthermore, the left side or right side of the magnetic conductive strip extends smoothly upward from the rectangular bottom surface to the wavy upper surface 20 through the irregular structure, so that the left side or right side of a magnetic conductive strip can be nested with another adjacent magnetic conductive strip. When excited, any two adjacent wavy protrusions have different magnetic polarities, thereby greatly reducing the distance between the two magnetic poles on the upper surface of the magnetic conductive strip. When adsorbing a workpiece, the workpiece can easily contact the magnetic poles of two magnetic conductive strips with different polarities at the same time, thereby effectively reducing the magnetic pole distance between the magnetic conductive strips while maintaining the magnetic flux density and the magnetic conductive area, and can adsorb both large-sized workpieces and small-sized workpieces. Therefore, this embodiment has very good application value.

[0068] Similar to the first embodiment, the area of ​​the upper surface 20 of the magnetic conductive strip 200 of this embodiment is equal to the area of ​​the bottom surface 10 of the magnetic conductive strip 200. The bottom surface 10 of the magnetic conductive strip 200 completely covers a magnetic conductive area of ​​the same polarity of the magnetic suction cup base. Since the magnetic holding force per unit area is proportional to the square of the magnetic flux density, when the magnetic suction cup is excited, the magnetic flux generated by the magnetic suction cup is transmitted upward to the upper surface 20 of the magnetic conductive strip via the bottom surface 10. If the area of ​​the upper surface 20 is larger than the area of ​​the bottom surface 10, the magnetic flux per unit area transmitted upward will be weakened due to the area dispersion, thereby causing the holding force per unit area of ​​the upper surface to decrease faster; similarly, the area of ​​the upper surface 20 of the magnetic conductive strip 200 can also be slightly smaller than the area of ​​the bottom surface 10 of the magnetic conductive strip 200. When the area of ​​the upper surface 20 is smaller than the area of ​​the bottom surface 10, the magnetic flux per unit area transmitted upward will not be weakened, thereby maintaining the holding force per unit area. Therefore, it is necessary to maintain the area of ​​the upper surface 20 of the magnetic strip 200 equal to or slightly smaller than the area of ​​the bottom surface 10 of the magnetic strip 200 in the same polarity magnetic conductive area covering the magnetic suction cup base, so as to ensure that the magnetic strip has the maximum magnetic flux density and magnetic conductive area, so that the magnetic strip as a whole has the maximum holding force.

[0069] The magnetic conductive strip plate disclosed in the second embodiment of the present invention can simultaneously maintain a magnetic flux density and a magnetic conductive area equivalent to those of the base, and can effectively reduce the pole pitch to meet the holding requirements of workpieces of various shapes without being limited by the usage scenario.

[0070] Third embodiment

[0071] like Figure 3-1 and Figure 3-2 As shown, the third embodiment of the present invention discloses a magnetic suction cup panel 300, which is placed on the magnetic suction cup base. The magnetic suction cup panel 300 is assembled by a plurality of magnetic conductive strips 100 or 200 which are cross-nested and assembled side by side. An isolation gap is set between any two magnetic conductive strips, and the isolation gap is filled with non-magnetic conductive materials.

[0072] Among them, any magnetic strip plate constituting the magnetic suction cup panel extends smoothly upward from the rectangular bottom surface to the wavy upper surface through an irregular structure, and the bottom surface of the magnetic strip plate completely covers a magnetic conductive area of ​​the same polarity of the corresponding magnetic suction cup base to conduct the magnetic flux generated by the magnetic suction cup upward to the workpiece to be adsorbed.

[0073] Specifically, the rectangular bottom surface of any magnetic strip assembled into the magnetic suction cup panel 300 covers a magnetic conductive area of ​​the same polarity of the magnetic suction cup base, and can conduct the magnetic flux generated by it to the workpiece when the magnetic suction cup base is excited, so that the magnetic flux penetrates the workpiece to form a loop, thereby adsorbing the workpiece on the magnetic suction cup panel; similarly, when the magnetic suction cup base is demagnetized, the magnetic flux of the magnetic strip also disappears, thereby releasing the workpiece from the magnetic suction cup panel. The rectangular bottom surface of the magnetic strip completely covers a magnetic conductive area of ​​the same polarity of the magnetic suction cup base, including two situations: one is covering the top of the base of the magnetic suction cup base, and the other is covering the top of the magnetic source. In the first case, the magnetic strip can conduct all the magnetic flux generated by the base. In the second case, the bottom surface of the base part of the magnetic strip at both ends is magnetically isolated to avoid magnetic short circuit between the magnetic source and the base. The magnetic strip will not conduct the magnetic flux generated by the base, but only conduct all the magnetic flux generated by the magnetic source. Therefore, in general, the rectangular bottom surface of the magnetic strip completely covers a magnetic conductive area of ​​the same polarity, which can conduct the magnetic flux generated by the magnetic suction cup base to the maximum extent, and the total amount of magnetic flux will not be reduced.

[0074] Furthermore, any magnetic conductive strip as a whole extends smoothly upward from the rectangular bottom surface through the irregular structure to the wavy upper surface, so that a magnetic conductive strip can be nested with another adjacent magnetic conductive strip with a gap. On the one hand, when excited, any two adjacent wavy protrusions have different magnetic polarities, thereby greatly reducing the spacing between the magnetic poles on the magnetic suction cup panel. When the magnetic suction cup panel adsorbs the workpiece, the workpiece can easily contact two magnetic conductive strips with different polarities at the same time. On the other hand, the magnetic conductive area on the upper surface of the magnetic conductive strip will not be reduced, so that the magnetic pole spacing between the two magnetic conductive strips with different polarities can be effectively reduced while maintaining the magnetic flux density and the magnetic conductive area. It can adsorb both large-sized workpieces and small-sized workpieces. Therefore, this embodiment has very good application value.

[0075] As a preferred embodiment, the total area of ​​the upper surfaces of the plurality of magnetic conductive strips 100 or 200 assembled into the magnetic suction cup panel 300 can be equal to the total area of ​​the bottom surfaces of the plurality of magnetic conductive strips 100 or 200. Since the magnetic holding force per unit area is proportional to the square of the magnetic flux density, the magnetic flux generated by the magnetic conductive area of ​​the magnetic suction cup base during excitation is conducted upward to the upper surface of the magnetic suction cup panel 300. If the total area of ​​the upper surfaces of the plurality of magnetic conductive strips 100 or 200 is greater than the total area of ​​the bottom surface, the magnetic flux per unit area conducted upward will be weakened due to the area dispersion, thereby reducing the magnetic flux density on the upper surfaces of the magnetic conductive strips, resulting in a faster reduction in the holding force per unit area of ​​the upper surface. Theoretically, the total area of ​​the upper surfaces of the plurality of magnetic conductive strips can also be slightly smaller than the total area of ​​the bottom surfaces of the plurality of magnetic conductive strips. When the total area of ​​the upper surfaces of the plurality of magnetic conductive strips is smaller than the total area of ​​the bottom surface, the magnetic flux per unit area conducted upward will not be weakened, thereby maintaining the holding force per unit area. Therefore, it is necessary to maintain the total upper surface area of ​​the multiple magnetic strips of the magnetic suction cup panel 300 equal to or slightly smaller than the total bottom surface area to ensure that the magnetic suction cup panel has the maximum magnetic flux density and magnetic conductive area at the same time, so that the magnetic suction cup panel as a whole has the maximum holding force.

[0076] It should also be noted that any two magnetic strips of the assembled magnetic suction cup panel 300 are separated by non-magnetic materials, the material of the magnetic strips can be low-carbon steel, and the material of the non-magnetic material can be epoxy resin or other non-magnetic magnetic isolation materials. More preferably, any two magnetic strips are welded and connected with non-magnetic materials to ensure the overall strength of the magnetic suction cup panel.

[0077] In the magnetic suction cup panel of the third embodiment of the present invention, multiple magnetic strips can conduct the magnetic flux generated by the magnetic suction cup to the maximum extent, and the total amount of magnetic flux will not be reduced; at the same time, the distance between the two magnetic poles of different polarities is greatly reduced. When adsorbing workpieces, small-sized workpieces can also easily contact two magnetic poles of different polarities at the same time, thereby meeting the requirements of adsorbing small-sized workpieces and will not be limited by the use scenario. Therefore, the design of the magnetic suction cup panel of the third embodiment of the present invention can not only maintain the magnetic flux density and magnetic conductive area equivalent to the base at the same time, but also effectively reduce the magnetic pole spacing, and the effect is very good when applied.

[0078] Fourth embodiment

[0079] like Figure 4-1 As shown, the fourth embodiment of the present invention discloses a magnetic chuck 500, comprising:

[0080] The magnetic suction cup base 400 includes a base 401, a magnetic source body 402 and a non-magnetic conductive part 403 located between the magnetic source body and the base. The upper surfaces of the magnetic source body 402 and the base 401 constitute a plurality of magnetic conductive areas of the magnetic suction cup base, and the upper surface of the non-magnetic conductive part 403 constitutes a non-magnetic conductive area of ​​the magnetic suction cup base.

[0081] The magnetic suction cup panel 300 is placed on the magnetic suction cup base 400. The magnetic suction cup panel 300 is assembled by a plurality of magnetic conductive strips which are cross-nested and arranged side by side. An isolation gap is set between any two magnetic conductive strips, and the isolation gap is filled with non-magnetic conductive materials.

[0082] Among them, any magnetic strip plate constituting the magnetic suction cup panel extends smoothly upward from the rectangular bottom surface to the wavy upper surface through an irregular structure, and the bottom surface of the magnetic strip plate completely covers a magnetic conductive area of ​​the same polarity of the corresponding magnetic suction cup base 400, so as to conduct the magnetic flux generated by the magnetic suction cup base 400 upward to the workpiece to be adsorbed.

[0083] It should be noted that the rectangular bottom surface of the magnetic strip completely covers a magnetic conductive area of ​​the same polarity as the magnetic suction cup base, including two situations: one is covering the top of the base of the magnetic suction cup base, and the other is covering the top of the magnetic source. In the first case, the magnetic strip can conduct all the magnetic flux generated by the base. In the second case, the bottom surface of the base part of the magnetic strip at both ends is magnetically isolated to avoid magnetic short circuit between the magnetic source and the base. The magnetic strip will not conduct the magnetic flux generated by the base, but only conduct all the magnetic flux generated by the magnetic source. Therefore, in summary, the rectangular bottom surface of the magnetic strip completely covers a magnetic conductive area of ​​the same polarity, which can conduct the magnetic flux generated by the magnetic suction cup to the maximum extent, and the total amount of magnetic flux will not be reduced.

[0084] Specifically, the magnetic chuck 500 in this embodiment is an electromagnetic magnetic chuck. Figure 4-1 As shown, the magnetic source body 402 is composed of an iron core and a coil surrounding the iron core. The iron core can be as follows Figure 4-1 As shown in , the base 401 is an independent component, or the base 401 can be an integrated design. The non-magnetic portion 403 can be air, or filled with a non-magnetic material (such as epoxy resin).

[0085] The working process of the magnetic chuck of the fourth embodiment of the present invention is as follows:

[0086] like Figure 4-2 , 4-3As shown in 4-4, when the magnetic suction cup base 400 is energized, the magnetic source body 402 in the magnetic suction cup base 400 and the contact surface of the panel are at N level, and the base 401 in the magnetic suction cup base 400 and the contact surface of the panel are at S level. In this way, the magnetic strips of the magnetic suction cup panel 300 covering the magnetic source body are at N poles, and the magnetic strips of the magnetic suction cup panel 300 covering the base are at S poles, that is, the magnetic strips separated by non-magnetic materials and the adjacent magnetic strips have opposite polarities. When the workpiece is adsorbed onto the magnetic suction cup panel 300, the magnetic suction cup base 400, the magnetic suction cup panel 300 and the workpiece 600 are formed as follows. Figure 4-3 and 4-4 The magnetic circuit shown is closed, thereby tightly adsorbing the workpiece 600 to the magnetic chuck panel 300 .

[0087] When the magnetic suction cup base 400 is demagnetized, the magnetic suction cup base 400 is non-magnetic to the outside. At this time, the magnetic strip 100 constituting the magnetic suction cup panel 300 no longer conducts magnetic flux, and the magnetic suction cup panel 300 is also non-magnetic to the outside. Therefore, the magnetic circuit state between the magnetic suction cup base 400, the magnetic suction cup panel 300 and the workpiece 600 is as follows: Figure 4-5 , 4-6 and Figure 4-7 As shown, there is no magnetic circuit conduction, so the workpiece is released from the magnetic chuck panel 300.

[0088] Fifth embodiment

[0089] like Figure 5-1 As shown, the fifth embodiment of the present invention discloses a magnetic chuck, comprising:

[0090] The magnetic suction cup base 400 includes a base 401, a magnetic source body 402 and a non-magnetic conductive part 403 located between the magnetic source body and the base. The upper surfaces of the magnetic source body 402 and the base 401 constitute a plurality of magnetic conductive areas of the magnetic suction cup base, and the upper surface of the non-magnetic conductive part 403 constitutes a non-magnetic conductive area of ​​the magnetic suction cup base.

[0091] The magnetic suction cup panel 300 is placed on the magnetic suction cup base 400. The magnetic suction cup panel 300 is assembled by a plurality of magnetic conductive strips which are cross-nested and arranged side by side. An isolation gap is set between any two magnetic conductive strips, and the isolation gap is filled with non-magnetic conductive materials.

[0092] Among them, any magnetic strip plate constituting the magnetic suction cup panel extends smoothly upward from the rectangular bottom surface to the wavy upper surface through an irregular structure, and the bottom surface of the magnetic strip plate completely covers a magnetic conductive area of ​​the same polarity of the corresponding magnetic suction cup base 400, so as to conduct the magnetic flux generated by the magnetic suction cup base 400 upward to the workpiece to be adsorbed.

[0093] It should be noted that the rectangular bottom surface of the magnetic strip completely covers a magnetic conductive area of ​​the same polarity of the magnetic suction cup base, including two situations: one is covering the top of the base of the magnetic suction cup base, and the other is covering the top of the magnetic source. In the first case, the magnetic strip can conduct all the magnetic flux generated by the base. In the second case, the bottom surface of the base part of the magnetic strip at both ends is magnetically isolated to avoid magnetic short circuit between the magnetic source and the base. The magnetic strip will not conduct the magnetic flux generated by the base, but only conduct all the magnetic flux generated by the magnetic source. Therefore, in summary, the rectangular bottom surface of the magnetic strip completely covers a magnetic conductive area of ​​the same polarity, which can conduct the magnetic flux generated by the magnetic suction cup to the maximum extent, and the total amount of magnetic flux will not be reduced.

[0094] It should be emphasized that the magnetic suction cup 500 in this embodiment is an electro-permanent magnetic suction cup. When it is an electro-permanent magnetic suction cup, the magnetic source body 402 therein can be a magnetic differential magnetic source body or a non-magnetic differential magnetic source body.

[0095] Specifically, Figure 5-1 As shown, the magnetic suction cup 500 in this embodiment is a non-magnetic differential magnetic suction cup, that is, the magnetic source body 402 of the magnetic suction cup base 400 is a non-magnetic differential magnetic source body, and the magnetic source body 402 is composed of a reversible magnet 402a and one or more excitation coils 402b surrounding the reversible magnet, or the magnetic source body 402 is composed of a reversible magnet 402a, one or more excitation coils 402b surrounding the reversible magnet, and an iron core 402c placed on the magnetic source body. The magnetic source body can be an aluminum nickel cobalt reversible magnet, which is convenient for repeated excitation or demagnetization; the excitation coil can be an aluminum nickel cobalt excitation coil, which is convenient for repeated charging and discharging for excitation or demagnetization. The iron core in the magnetic source body 402 has the function of conducting magnetic flux. The non-magnetic part 403 can be air, or it can be filled with a non-magnetic material (such as epoxy resin), etc.

[0096] The working process of the magnetic chuck of the fifth embodiment of the present invention is as follows:

[0097] like Figure 5-2 , 5-3 As shown in 5-4, when the magnetic suction cup base 400 is energized, the magnetic source body 402 in the magnetic suction cup base 400 and the contact surface of the panel are at N level, and the base 401 in the magnetic suction cup base 400 and the contact surface of the panel are at S level. In this way, the magnetic strips of the magnetic suction cup panel 300 covering the magnetic source body are at N poles, and the magnetic strips of the magnetic suction cup panel 300 covering the base are at S poles, that is, the magnetic strips separated by non-magnetic materials and the adjacent magnetic strips have opposite polarities. When the workpiece is adsorbed onto the magnetic suction cup panel 300, the magnetic suction cup base 400, the magnetic suction cup panel 300 and the workpiece 600 are formed as follows. Figure 5-3 and 5-4The magnetic circuit shown is closed, thereby tightly adsorbing the workpiece to the magnetic chuck panel 300.

[0098] When the magnetic suction cup base 400 is demagnetized, the magnetic suction cup base 400 is non-magnetic to the outside. At this time, the magnetic strips constituting the magnetic suction cup panel 300 no longer conduct magnetic flux, and the magnetic suction cup panel 300 is also non-magnetic to the outside. Therefore, the magnetic circuit state between the magnetic suction cup base 400, the magnetic suction cup panel 300 and the workpiece 600 is as follows: Figure 5-5 , 5-6 As shown in Figures 5-7 , there is no magnetic circuit conduction, thereby releasing the workpiece from the magnetic chuck panel 300 .

[0099] Sixth Embodiment

[0100] like Figure 6-1 As shown, the sixth embodiment of the present invention discloses a magnetic chuck, comprising:

[0101] The magnetic suction cup base 400 includes a base 401, a magnetic source body 402 and a non-magnetic conductive part 403 located between the magnetic source body and the base. The upper surfaces of the magnetic source body 402 and the base 401 constitute a plurality of magnetic conductive areas of the magnetic suction cup base, and the upper surface of the non-magnetic conductive part 403 constitutes a non-magnetic conductive area of ​​the magnetic suction cup base.

[0102] The magnetic suction cup panel 300 is placed on the magnetic suction cup base 400. The magnetic suction cup panel 300 is assembled by a plurality of magnetic conductive strips which are cross-nested and arranged side by side. An isolation gap is set between any two magnetic conductive strips, and the isolation gap is filled with non-magnetic conductive materials.

[0103] Among them, any magnetic strip plate constituting the magnetic suction cup panel extends smoothly upward from the rectangular bottom surface to the wavy upper surface through an irregular structure, and the bottom surface of the magnetic strip plate completely covers a magnetic conductive area of ​​the same polarity of the corresponding magnetic suction cup base 400, so as to conduct the magnetic flux generated by the magnetic suction cup base 400 upward to the workpiece to be adsorbed.

[0104] It should be noted that the rectangular bottom surface of the magnetic strip completely covers a magnetic conductive area of ​​the same polarity of the magnetic suction cup base, including two situations: one is covering the top of the base of the magnetic suction cup base, and the other is covering the top of the magnetic source. In the first case, the magnetic strip can conduct all the magnetic flux generated by the base. In the second case, the bottom surface of the base part of the magnetic strip at both ends is magnetically isolated to avoid magnetic short circuit between the magnetic source and the base. The magnetic strip will not conduct the magnetic flux generated by the base, but only conduct all the magnetic flux generated by the magnetic source. Therefore, in summary, the rectangular bottom surface of the magnetic strip completely covers a magnetic conductive area of ​​the same polarity, which can conduct the magnetic flux generated by the magnetic suction cup to the maximum extent, and the total amount of magnetic flux will not be reduced.

[0105] It should be emphasized that the magnetic suction cup 500 in this embodiment is an electro-permanent magnetic suction device. When it is an electro-permanent magnetic suction device, the magnetic source body 402 therein can be a magnetic differential magnetic source body or a non-magnetic differential magnetic source body.

[0106] Specifically, Figure 6-1 As shown, the magnetic suction cup 500 in this embodiment is a magnetic differential magnetic suction cup, that is, relative to the fifth embodiment, the magnetic source body 402 in this embodiment is a magnetic differential magnetic source body, and an irreversible magnet 402d is also surrounded around the iron core 402c. The irreversible magnet can use neodymium iron boron with higher coercivity, so as to generate a magnetic field or neutralize it together with the aluminum nickel cobalt reversible magnet with lower coercivity, so that the magnetic suction cup displays or does not display magnetism to the outside. The non-magnetic portion 403 can be air, or it can be filled with a non-magnetic material (such as epoxy resin), etc.

[0107] The working process of the magnetic chuck of the sixth embodiment of the present invention is as follows:

[0108] like Figure 6-2 , 6-3 As shown in Figure 6-4, when the magnetic suction cup base 400 is energized, the magnetic source body 402 in the magnetic suction cup base 400 and the contact surface of the panel are at N level, and the base 401 in the magnetic suction cup base 400 and the contact surface of the panel are at S level. In this way, the magnetic strips of the magnetic suction cup panel 300 covering the magnetic source body are at N poles, and the magnetic strips of the magnetic suction cup panel 300 covering the base are at S poles, that is, the magnetic strips separated by non-magnetic materials and the adjacent magnetic strips have opposite polarities. When the workpiece is adsorbed onto the magnetic suction cup panel 300, the magnetic suction cup base 400, the magnetic suction cup panel 300 and the workpiece 600 are formed as shown in Figure 6-4. Figure 6-3 and 6-4 The magnetic circuit shown is closed, thereby tightly adsorbing the workpiece to the magnetic chuck panel 300.

[0109] When the magnetic suction cup base 400 is demagnetized, the magnetic suction cup base 400 is non-magnetic to the outside. At this time, the magnetic strips constituting the magnetic suction cup panel 300 no longer conduct magnetic flux, and the magnetic suction cup panel 300 is also non-magnetic to the outside. Therefore, the magnetic circuit state between the magnetic suction cup base 400, the magnetic suction cup panel 300 and the workpiece 600 is as follows: Figure 6-5 , 6-6 As shown in FIGS. 6-7 , there is no magnetic circuit conduction, thereby releasing the workpiece from the magnetic chuck panel 300 .

[0110] In summary, the magnetic strips, magnetic suction cup panel and magnetic suction cup involved in the embodiments of the present invention can maximize the conduction of the magnetic flux generated by the magnetic suction cup base because the bottom surface of the magnetic strips completely covers a magnetic conductive area of ​​the same polarity; at the same time, since the magnetic strips as a whole smoothly extend upward from the rectangular bottom surface to the wavy upper surface through an irregular structure, on the one hand, the pole pitch of the upper surface of the magnetic suction cup panel is greatly reduced compared with the pole pitch of the base, and on the other hand, the magnetic conductive area of ​​the upper surface of the magnetic suction cup panel will not be reduced. Therefore, when adsorbing workpieces, the present invention can simultaneously maintain the magnetic flux density and magnetic conductive area equivalent to the base and reduce the pole pitch, which has high practical value.

[0111] In addition, the above embodiments of the present invention are only illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Any person skilled in the art may modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A magnetic conductive strip plate for assembling a magnetic suction cup panel, wherein the magnetic suction cup panel can conduct the magnetic flux generated by the magnetic suction cup base upward to adsorb the workpiece, and the upper surface of the magnetic suction cup base is composed of a plurality of magnetic conductive areas and non-magnetic conductive areas, characterized in that: The magnetic conductive strip plate as a whole extends smoothly upward from a rectangular bottom surface to a wavy upper surface through an irregular structure, and the bottom surface completely covers a magnetic conductive area of ​​the same polarity. In the length direction of the magnetic conductive strip plate, the maximum width of the upper surface is greater than the maximum width of the bottom surface.

2. The magnetic conductive strip according to claim 1, characterized in that: The area of ​​the upper surface of the magnetic conductive strip is equal to or smaller than the area of ​​the bottom surface of the magnetic conductive strip.

3. The magnetic conductive strip according to claim 1, characterized in that: The irregular structure is a plurality of grooves and a plurality of ridges which are staggered on the left and right sides of the magnetic conductive strip.

4. The magnetic conductive strip plate according to claim 3, characterized in that: The top of the convex ridge is arc-shaped or trapezoidal, and the lengths of the plurality of convex ridges extending toward the left / right sides of the magnetic conductive strip plate are all equal.

5. The magnetic conductive strip plate according to claim 1, characterized in that: The magnetic conductive strip is integral or segmented in its length direction.

6. A magnetic chuck panel, used for conducting the magnetic flux generated by the magnetic chuck to adsorb a workpiece, characterized in that: The magnetic suction cup panel is assembled by a plurality of magnetic conductive strips as described in any one of claims 1 to 5, which are cross-nested and assembled side by side. An isolation gap is set between any two of the magnetic conductive strips, and the isolation gap is filled with non-magnetic conductive materials.

7. The magnetic suction cup panel according to claim 6, characterized in that: The total area of ​​the upper surfaces of the plurality of magnetic conductive strips assembled into the magnetic suction cup panel is equal to or smaller than the total area of ​​the bottom surfaces.

8. A magnetic chuck, characterized in that: include: A magnetic chuck base, comprising a base, a magnetic source body and a non-magnetic conductive part located between the magnetic source body and the base, wherein the upper surfaces of the magnetic source body and the base constitute a plurality of magnetic conductive areas of the magnetic chuck base, and the upper surface of the non-magnetic conductive part constitutes a non-magnetic conductive area of ​​the magnetic chuck base; A magnetic suction cup panel is placed on the magnetic suction cup base, wherein the magnetic suction cup panel is assembled by a plurality of magnetic conductive strips as described in any one of claims 1 to 5, which are cross-nested and assembled side by side, and an isolation gap is set between any two of the magnetic conductive strips, and the isolation gap is filled with non-magnetic conductive materials; Wherein, the bottom surface of any of the magnetic conductive strips constituting the magnetic suction cup panel completely covers a magnetic conductive area of ​​the same polarity of the corresponding magnetic suction cup base, so as to conduct the magnetic flux generated by the magnetic suction cup base upward to the workpiece to be adsorbed.

9. The magnetic chuck according to claim 8, characterized in that: The magnetic source body in the magnetic chuck base is composed of an iron core and a coil surrounding the iron core.

10. The magnetic chuck according to claim 8, characterized in that: The magnetic source body in the magnetic chuck base is composed of a reversible magnet and one or more excitation coils surrounding the reversible magnet.

11. The magnetic chuck according to claim 10, characterized in that: The magnetic source body further includes an iron core placed on the reversible magnet and an irreversible magnet surrounding the iron core.

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