Magnetic clamp

Abstract

The utility model provides a magnetic force clamp, including upper chuck, lower chuck, permanent magnet subassembly, bolt subassembly and pneumatic propulsion system, permanent magnet subassembly includes the first permanent magnet and second permanent magnet that are embedded in the upper chuck and lower chuck respectively, the upper chuck and lower chuck pass through the bolt subassembly assembly and connect, the pneumatic propulsion system passes through the bolt subassembly, the pneumatic propulsion system passes through the bolt subassembly, and the pneumatic propulsion system passes through the bolt subassembly. The clamping part of the upper chuck and the clamping part of the lower chuck are clamped and closed under the action of the magnetic force of the first permanent magnet and the second permanent magnet; the upper clamping head is further provided with a jacking column facing the pneumatic propelling system, when the pneumatic propelling system is powered on, the pneumatic propelling system pushes the jacking column so that the upper clamping head can rotate along the bolt assembly in a shaft mode, and the clamping part of the upper clamping head is separated from the clamping part of the lower clamping head. Therefore, the clamping device is simple in structure, safe, reliable, even in clamping stress, low in cost and environmentally friendly.

Description

Technical Field

[0001] This utility model relates to the field of circuit board manufacturing, and in particular to a magnetic clamp. Background Technology

[0002] With the continuous advancement of automation machinery and PCB equipment, various mechanical fixtures are needed; however, the fixtures used are different and not very automated, making them quite cumbersome to use.

[0003] The current pain points in the clamping industry include the following: 1. Insufficient clamping force control; traditional spring clamps use a rigid clamping structure, which easily causes indentations or plastic deformation on the spring surface, especially for some high-precision objects, resulting in scrap. 2. Poor structural adaptability; single-size clamps cannot be compatible with multiple specifications of springs, and changing clamp springs is time-consuming and troublesome, making it even more difficult to assemble some irregularly shaped springs. 3. Significant safety risks; springs are prone to detaching from the clamp during compression / tension, which can easily cause injury to personnel. 4. Extremely low automation compatibility; traditional clamps are almost entirely handled manually and cannot achieve intelligent operation, greatly affecting production efficiency. 5. Failure to automatically adjust the size of the clamp opening; the size of the clamp opening in traditional clamps is almost always fixed. 6. Frequent and costly replacement; the elastic strength of traditional spring clamps is easily weakened, and frequent replacement leads to high costs.

[0004] Therefore, it is urgent to improve the existing various clamps. Utility Model Content

[0005] In view of the above-mentioned defects, the purpose of this utility model is to provide a magnetic clamp that is simple in structure, safe and reliable, has uniform clamping force, low cost and environmentally friendly.

[0006] To achieve the above objectives, this utility model provides a magnetic clamp, including an upper clamp, a lower clamp, a permanent magnet assembly, a pin assembly, and a pneumatic propulsion system. The permanent magnet assembly includes a first permanent magnet and a second permanent magnet respectively embedded in the upper clamp and the lower clamp. The upper clamp and the lower clamp are connected by the pin assembly, and the clamping portions of the upper clamp and the lower clamp are clamped and closed under the magnetic force of the first permanent magnet and the second permanent magnet. The upper clamp is also provided with a top column facing the pneumatic propulsion system. When the pneumatic propulsion system is energized, the pneumatic propulsion system pushes the top column to make the upper clamp rotate along the axis of the pin assembly, and the clamping portions of the upper clamp and the lower clamp separate.

[0007] Furthermore, the pin assembly includes a bushing and a pin. The bushing passes through the positioning hole of the lower chuck and is inserted into the corresponding coaxial hole of the upper chuck. The pin is inserted into the bushing to assemble the upper chuck and the lower chuck together.

[0008] Furthermore, it also includes a clamping limiting plate, on which the upper clamp and the lower clamp are fixed and limited.

[0009] Furthermore, both the first permanent magnet and the second permanent magnet are encapsulated inside the corresponding upper and lower clamps by a permanent magnet sealing plate and an iron plate.

[0010] Furthermore, the top post of the upper chuck passes through the lower chuck and is exposed on the outer surface of the lower chuck, and the propulsion direction of the pneumatic propulsion system is toward the top post.

[0011] Furthermore, the two end faces of the clamping parts of the upper and lower clamps are provided with anti-slip and wear-resistant layers and have staggered micro-protrusion structures distributed on the surface.

[0012] Furthermore, the thrust of the pneumatic propulsion system when energized is greater than the magnetic attraction between the first permanent magnet and the second permanent magnet.

[0013] The magnetic clamp of this utility model includes an upper clamp, a lower clamp, a permanent magnet assembly, a pin assembly, and a pneumatic propulsion system. The permanent magnet assembly includes a first permanent magnet and a second permanent magnet respectively embedded in the upper and lower clamps. The upper and lower clamps are connected by the pin assembly, and the clamping portions of the upper and lower clamps are clamped and closed under the magnetic force of the first and second permanent magnets. The upper clamp also has a top post facing the pneumatic propulsion system. When the pneumatic propulsion system is energized, it pushes the top post to make the upper clamp rotate along the axis of the pin assembly, thus separating the clamping portions of the upper and lower clamps. Therefore, this utility model has a simple structure, is safe and reliable, provides uniform clamping force, is low in cost, and is environmentally friendly. Attached Figure Description

[0014] Figure 1 A schematic diagram of the clamping state of the magnetic clamp provided in an embodiment of the present invention;

[0015] Figure 2 A schematic diagram of the open state of the magnetic clamp provided in an embodiment of this utility model;

[0016] Figure 3 A front view of the main structure of the magnetic clamp provided in an embodiment of this utility model;

[0017] Figure 4 A side view of the main structure of the magnetic clamp provided in an embodiment of the present invention. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] It should be noted that references to "an embodiment," "embodiment," "example embodiment," etc., in this specification refer to the described embodiment including specific features, structures, or characteristics, but not every embodiment must include these specific features, structures, or characteristics. Furthermore, such expressions do not refer to the same embodiment. Moreover, when describing specific features, structures, or characteristics in conjunction with embodiments, whether or not explicitly described, it is indicated that incorporating such features, structures, or characteristics into other embodiments is within the knowledge of those skilled in the art.

[0020] The embodiments described below mainly involve magnetic fixtures in vertical developing DES (Developing Etching Stripping) production, with the aim of improving production efficiency.

[0021] Figures 1-2 This invention illustrates a magnetic clamp provided in one embodiment of the present invention, comprising an upper clamp 1, a lower clamp 2, a permanent magnet assembly 3, a pin assembly, and a pneumatic propulsion system 9. The permanent magnet assembly includes a first permanent magnet and a second permanent magnet respectively embedded in the upper clamp 1 and the lower clamp 2. The upper clamp 1 and the lower clamp 2 are connected by the pin assembly, and the clamping portions of the upper clamp 1 and the lower clamp 2 are clamped and closed under the magnetic force of the first and second permanent magnets. The upper clamp 1 is also provided with a top post facing the pneumatic propulsion system 9. When the pneumatic propulsion system 9 is energized, the pneumatic propulsion system 9 pushes the top post to make the upper clamp 1 rotate along the axis of the pin assembly, and the clamping portions of the upper clamp 1 and the lower clamp 2 separate. In this embodiment, the magnetic clamp, when in the clamping state, uses the magnetic attraction between the first and second permanent magnets to tightly bring the two clamping parts of the upper clamp 1 and lower clamp 2 together, forming a clamping state, which can clamp the object between the two clamping parts; see also Figure 2 When the pneumatic propulsion system 9 is powered on, it will push forward to squeeze the top column of the upper chuck 1, causing the top column to be displaced under the push of the pneumatic propulsion system 9. During this displacement, the upper chuck 1 will cause its clamping part to separate from the clamping part of the lower chuck 2, that is, the magnetic clamp opens at this time.

[0022] Among them, the pneumatic propulsion system 9 can adjust the corresponding output force to push the displacement distance of the top column of the upper chuck 1, thereby controlling the size of the clamping jaw to clamp PCBs of different thicknesses; that is, the magnetic clamp of this embodiment can effectively control the magnitude of the clamping force and the size of the clamping jaw.

[0023] The magnetic clamp of this embodiment does not suffer from insufficient clamping force due to plastic deformation; it is simple in structure, easy to install, quick to install, has few specifications and types, is easy to select, and is energy-saving, environmentally friendly, and has low maintenance costs; it has high clamping force and stability, with clamping force far exceeding that of traditional clamps, and can firmly clamp different plate thicknesses and other objects; the magnetic clamp is safe and reliable, will not injure personnel due to spring-loaded splashes, and the clamp retains its magnetic force after power failure, avoiding plate detachment due to sudden power outages and greatly reducing the scrap rate of plates; at the same time, the magnetic clamp applies uniform force to the workpiece, avoiding deformation and slippage caused by uneven clamping force; the magnetic clamp is low in cost and environmentally friendly, and the magnets used are permanent magnets, so the magnetic force hardly weakens and the number of replacements is low.

[0024] Specifically, the pin assembly includes a bushing 7 and a pin 4. The bushing 7 passes through the positioning hole of the lower chuck 2 and is inserted into the corresponding coaxial hole of the upper chuck 1. The pin 4 is inserted into the bushing 7 to connect the upper chuck 1 and the lower chuck 2 together. The upper chuck 1 and the lower chuck 2 have matching positioning holes and coaxial holes. The bushing 7 and the pin 4 of the pin assembly are coaxially inserted into the positioning holes and coaxial holes, so that the upper chuck 1 and the lower chuck 2 are combined together. At the same time, the upper chuck 1 and the lower chuck 2 can rotate along the axis of the pin assembly. During this rotation, the two clamping parts of the upper chuck 1 and the lower chuck 2 can move towards each other, thereby forming a clamping action.

[0025] A spacer sleeve 8 is provided between the positioning hole and the coaxial hole. The bushing 7 passes through the spacer sleeve 8, and the pin 4 passes through the bushing 7, so that the upper clamp 1 and the lower clamp 2 are inserted together. The pin assembly also includes a shaft retaining spring 11, which is specifically used to achieve axial positioning through elastic deformation.

[0026] This embodiment also includes a clamp limiting plate 10, with the upper clamp 1 and the lower clamp 2 fixedly fixed on the clamp limiting plate 10; specifically, the lower clamp 2 is installed and fixed on the clamp limiting plate 10 by means of screw connection, snap connection or magnetic connection.

[0027] The first and second permanent magnets are both encapsulated inside the corresponding upper chuck 1 and lower chuck 2 by a permanent magnet sealing plate 6 and an iron plate 5. That is, each permanent magnet is encapsulated inside the chuck by the left and right sides of the permanent magnet sealing plate 6 and the iron plate 5. Both the upper chuck 1 and lower chuck 2 have an internal space for accommodating the permanent magnets. When the upper chuck 1 and lower chuck 2 are combined, the corresponding first and second permanent magnets are close together, and they attract each other under magnetic force. Furthermore, the thrust of the pneumatic propulsion system 9 when energized is greater than the magnetic attraction between the first and second permanent magnets.

[0028] The top post of the upper chuck 1 passes through the lower chuck 2 and is exposed on the outer surface of the lower chuck 2. The propulsion direction of the pneumatic propulsion system 9 is towards the top post.

[0029] Preferably, the two end faces of the clamping parts of the upper chuck 1 and the lower chuck 2 are provided with anti-slip and wear-resistant layers and have staggered micro-protrusion structures distributed on the surface.

[0030] In summary, the magnetic clamp of this utility model includes an upper clamp, a lower clamp, a permanent magnet assembly, a pin assembly, and a pneumatic propulsion system. The permanent magnet assembly includes a first permanent magnet and a second permanent magnet respectively embedded in the upper and lower clamps. The upper and lower clamps are connected by the pin assembly, and the clamping portions of the upper and lower clamps are clamped and closed under the magnetic force of the first and second permanent magnets. The upper clamp also has a top post facing the pneumatic propulsion system. When the pneumatic propulsion system is energized, it pushes the top post to make the upper clamp rotate along the axis of the pin assembly, thus separating the clamping portions of the upper and lower clamps. With the advancement of technology, mechanical equipment, and PCB equipment, the magnetic clamp of this utility model will play an important role in the field of PCB equipment.

[0031] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A magnetic clamp, characterized in that, The device includes an upper chuck, a lower chuck, a permanent magnet assembly, a pin assembly, and a pneumatic propulsion system. The permanent magnet assembly includes a first permanent magnet and a second permanent magnet embedded in the upper chuck and the lower chuck, respectively. The upper chuck and the lower chuck are connected by the pin assembly, and the clamping portions of the upper chuck and the lower chuck are clamped and closed under the magnetic force of the first permanent magnet and the second permanent magnet. The upper chuck also has a top post facing the pneumatic propulsion system. When the pneumatic propulsion system is energized, the pneumatic propulsion system pushes the top post to make the upper chuck rotate along the axis of the pin assembly, and the clamping portions of the upper chuck and the lower chuck separate.

2. The magnetic clamp according to claim 1, characterized in that, The pin assembly includes a bushing and a pin. The bushing passes through the positioning hole of the lower chuck and is inserted into the corresponding coaxial hole of the upper chuck. The pin is inserted into the bushing to connect the upper chuck and the lower chuck together.

3. The magnetic clamp according to claim 1, characterized in that, It also includes a clamping limiting plate, on which the upper clamp and the lower clamp are fixed and limited.

4. The magnetic clamp according to claim 1, characterized in that, Both the first permanent magnet and the second permanent magnet are encapsulated inside the corresponding upper and lower clamps by a permanent magnet sealing plate and an iron plate.

5. The magnetic clamp according to claim 1, characterized in that, The top post of the upper chuck passes through the lower chuck and is exposed on the outer surface of the lower chuck, and the propulsion direction of the pneumatic propulsion system is toward the top post.

6. The magnetic clamp according to claim 1, characterized in that, The upper and lower chucks have anti-slip and wear-resistant layers on their opposite end faces, and their surfaces are covered with staggered micro-protrusions.

7. The magnetic clamp according to claim 1, characterized in that, The thrust of the pneumatic propulsion system when energized is greater than the magnetic attraction between the first permanent magnet and the second permanent magnet.

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