Clamp for processing high-pressure gas cylinder

Abstract

The utility model relates to the technical field of high -pressure gas cylinder processing discloses clamp for high -pressure gas cylinder processing, including clamp base, locating block and electromagnetic chuck, the upper surface of clamp base is pasted with the lower surface of electromagnetic chuck, the locating block is installed in the middle position of clamp base and electromagnetic chuck side face and connects both, the upper surface of electromagnetic chuck has several electromagnetic blocks along the axial even distribution, several electromagnetic blocks are mutually connected in parallel and are connected with power supply and control switch in common, the utility model discloses to solve the technical problem that traditional high -pressure gas cylinder clamp is easy to produce abrasion in the operation process, in order to restore the machining accuracy, need to replace the clamping part assembly of abrasion regularly to push high production cost and reduce the production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of high-pressure gas cylinder processing, specifically to a fixture for high-pressure gas cylinder processing. Background Technology

[0002] High-pressure gas cylinders, as core equipment for storing and transporting compressed gases, are widely used in industries such as industry, energy, medicine, and aerospace because they enable safe and efficient storage and transportation of gases. In industrial settings, they provide industrial gases such as oxygen and argon for processes like welding and cutting; in the energy sector, high-pressure hydrogen storage cylinders are a key carrier for hydrogen energy storage and transportation, supporting the development of the hydrogen fuel cell vehicle industry; in the medical field, oxygen cylinders are essential equipment for emergency treatment and respiratory therapy; and in the aerospace field, high-pressure gas cylinders are used in aircraft propulsion systems and environmental control.

[0003] The production of high-pressure gas cylinders involves material forming, machining, surface treatment, and safety testing. The process is highly complex and requires strict quality control. The quality control at each stage directly determines the assembly accuracy and sealing performance of the gas cylinders and valves. As the core device of the production equipment, the fixture is important in every dimension of the entire production chain, and its performance directly affects the production efficiency and product quality of high-pressure gas cylinders.

[0004] In the field of gas cylinder processing technology, traditional high-pressure gas cylinder clamps mostly adopt mechanical structures (see Chinese utility model patent "A Gas Cylinder Clamp", patent number: ZL202121018901.5). In actual processing, the clamp needs to withstand the action of cutting forces, vibrations and other dynamic external forces. Under long-term impact from external forces and frequent clamping, holding and disassembling operations, the area where its mechanical parts contact the gas cylinder surface is prone to wear due to friction. Such wear will cause the clamping accuracy of the clamp to gradually decrease. In order to restore the processing accuracy, it is necessary to replace the worn clamping components regularly. This process not only consumes a lot of manpower and material resources, but also increases production costs and reduces production efficiency. Utility Model Content

[0005] This utility model aims to provide a fixture for processing high-pressure gas cylinders, in order to solve the technical problem that traditional high-pressure gas cylinder fixtures need to withstand the dynamic external forces such as cutting forces and vibrations during actual processing. Under long-term external impact and frequent clamping, holding and disassembling operations, the area where the mechanical parts are in contact with the gas cylinder surface is prone to wear due to friction, which leads to a decrease in the clamping accuracy of the fixture. In order to restore the processing accuracy, the worn clamping parts need to be replaced regularly, which consumes a lot of manpower and material resources, increases production costs and reduces production efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] 1) A fixture for processing high-pressure gas cylinders, including a fixture base, a positioning block and an electromagnetic chuck. The upper surface of the fixture base is in contact with the lower surface of the electromagnetic chuck. The positioning block is installed at the middle position of the side of the fixture base and the electromagnetic chuck to connect the two. Several electromagnetic blocks are evenly distributed along the axial direction on the upper surface of the electromagnetic chuck. The electromagnetic blocks are connected in parallel with each other and are connected in series with the power supply and the control switch.

[0008] In this invention, the clamp base supports the electromagnetic chuck. The positioning block is installed at the middle position of the clamp base and the side of the electromagnetic chuck to connect the two, restricting their relative displacement in the direction perpendicular to the mating surface and ensuring that the upper and lower positions are fixed. The positioning block simplifies the installation process, and the base and the electromagnetic chuck can be quickly aligned without complicated adjustments, improving clamping efficiency. The upper surface of the clamp base is directly attached to the lower surface of the electromagnetic chuck, ensuring the flatness of the connection surface and the uniformity of force.

[0009] Multiple electromagnetic blocks are evenly distributed along the axial direction on the upper surface of the electromagnetic chuck, forming a linear array to ensure uniform adsorption force on the high-pressure gas cylinder. All parallel electromagnetic blocks are connected in series with the power supply and control switch to form a complete control loop. The circuit is controlled to open and close uniformly through the control switch. The parallel structure ensures that even if one electromagnetic block fails, the others can still work normally, avoiding the failure of the entire fixture due to the failure of a single electromagnetic block. When the electromagnetic blocks are energized, they instantly generate a strong magnetic field to adsorb the workpiece. After the power is cut off, the residual magnetism is extremely low, which facilitates quick disassembly of the workpiece, shortens auxiliary time, and improves production efficiency.

[0010] 2) The high-pressure gas cylinder processing fixture according to 1), wherein:

[0011] The positioning blocks are two symmetrically arranged. Each positioning block includes an upper positioning arm and a lower positioning arm arranged horizontally to each other. A vertically arranged connecting web plate connects the upper positioning arm and the lower positioning arm. The top and bottom ends of the connecting web plate are respectively connected to the same side ends of the upper positioning arm and the lower positioning arm.

[0012] This invention employs two positioning blocks to form a symmetrical structure. The symmetrical arrangement ensures that the force between the electromagnetic chuck and the base is evenly distributed, avoiding component deformation or loosening caused by stress concentration on one side. The positioning blocks, base, and electromagnetic chuck are independent components. If any component is worn or damaged, it can be disassembled and replaced individually, eliminating the need to scrap the entire fixture and reducing maintenance costs. The "embedded" structure of the positioning blocks achieves longitudinal positioning through mechanical cooperation, reducing reliance on fasteners, simplifying the clamping process, shortening auxiliary time, and improving production efficiency.

[0013] 3) The high-pressure gas cylinder processing fixture according to 1), wherein:

[0014] The clamp base and the electromagnetic chuck have positioning grooves and mating grooves on both sides to adapt to the upper positioning arm and the lower positioning arm, respectively. The upper positioning arm and the lower positioning arm are longitudinally engaged with the clamp base and the electromagnetic chuck by embedding the positioning grooves and mating grooves.

[0015] In this invention, after the upper positioning arm is embedded in the mating groove of the electromagnetic chuck, the top surface of the mating groove contacts the upper surface of the upper positioning arm, restricting the electromagnetic chuck from moving upward. After the lower positioning arm is embedded in the positioning groove of the base, the bottom surface of the positioning groove contacts the lower surface of the lower positioning arm, restricting the electromagnetic chuck from moving downward. The operator only needs to align the electromagnetic chuck with the fixture base and insert the positioning arm into the corresponding groove to complete the initial positioning. Compared with the traditional connection method, this shortens the clamping time and improves production efficiency.

[0016] 4) The high-pressure gas cylinder processing fixture according to 1), wherein:

[0017] The two connecting web plates are provided with upper and lower through holes respectively. The clamp base is provided with base threaded holes on both sides corresponding to the lower through holes. The electromagnetic chuck is provided with suction cup threaded holes on both sides corresponding to the upper through holes. Two bolts are passed through the lower through holes and screwed into the base threaded holes, while two other bolts are passed through the upper through holes and screwed into the suction cup threaded holes to fix the base and the electromagnetic chuck laterally.

[0018] In this utility model, the clamp base is provided with base threaded holes on both sides corresponding to the lower through holes, and the electromagnetic chuck is provided with suction cup threaded holes on both sides corresponding to the upper through holes. The specifications of the threaded holes match the specifications of the through holes. Two bolts pass through the two lower through holes and are screwed into the two base threaded holes, while two other bolts pass through the two upper through holes and are screwed into the two suction cup threaded holes. After the bolts are tightened, the positioning block, the base and the electromagnetic chuck are clamped by the axial force of the threaded pair, restricting the relative displacement of the three in the horizontal direction.

[0019] The symmetrical bolt layout ensures even load distribution and prevents overload on any single positioning block. The electromagnetic chuck and fixture base are first pre-positioned by groove embedding, and then precisely positioned by tightening the bolts. The bolt connection supports quick disassembly. When replacing the electromagnetic chuck, only four bolts need to be loosened for complete disassembly, which saves disassembly time compared to the traditional all-welded structure and improves work efficiency.

[0020] 5) The high-pressure gas cylinder processing fixture according to 1), wherein:

[0021] The upper surface of the electromagnetic chuck has several mounting grooves evenly distributed along the axial direction. The cross-sectional shape of the mounting groove is adapted to the shape of the electromagnetic block, the depth of the mounting groove is adapted to the height of the electromagnetic block, and the inner wall of the mounting groove is coated with an insulating coating.

[0022] In this invention, the upper surface of the electromagnetic chuck features multiple mounting grooves linearly and evenly distributed along its central axis. These axially distributed grooves create a regular array of electromagnetic blocks. When adsorbing high-pressure gas cylinders, the magnetic lines of force radiate evenly along the axis, preventing excessive localized suction that could deform the workpiece. The electromagnetic blocks are in close contact with the bottom of the grooves, allowing for rapid heat dissipation through the chuck's metal substrate, preventing overheating of the coil due to prolonged energization. An insulating coating isolates unnecessary conductive areas, improving electromagnetic conversion efficiency. The coating also isolates the electromagnetic blocks from the chuck substrate, preventing short-circuit faults caused by substrate leakage. The independent insulation design ensures that a failure in one electromagnetic block will not trigger a cascading damage to adjacent modules. The smooth surface of the insulating coating facilitates the cleaning of iron filings and other impurities.

[0023] The shape of the mounting groove is uniquely matched to the shape of the electromagnetic block to avoid installation errors. The matching mounting groove provides mechanical restraint, so even if the electromagnetic block coil lead is loose, it will not fall off due to vibration. The depth of the mounting groove is equal to the height of the electromagnetic block. The depth matching design ensures that there is no wobbling gap after the electromagnetic block is installed, and ensures that the upper surface of the electromagnetic block is flush with the upper surface of the electromagnetic chuck after installation, avoiding the protruding surface from affecting the workpiece adhesion.

[0024] 6) The high-pressure gas cylinder processing fixture according to 1), wherein:

[0025] The electromagnetic block is fixed in the mounting groove. Several wire through holes are distributed axially at both ends of the mounting groove. Each wire through hole corresponds to one electromagnetic block. The electromagnetic block includes an iron core and an excitation coil wound on the outer surface of the iron core. The two ends of the excitation coil extend outward through the corresponding wire through holes and are electrically connected to the adjacent excitation coils to form the excitation coils of all electromagnetic blocks in parallel. The two ends of the excitation coil on the electromagnetic block located at the end of the electromagnetic chuck extend outward through the corresponding wire through holes and are connected in series with the power supply and control switch.

[0026] In this invention, the magnetic block includes an iron core and an excitation coil wound on the outer surface of the iron core. Each electromagnetic block's excitation coil is independently powered, so even if a single coil fails, the remaining coils can still work normally, ensuring high reliability. The two ends of the excitation coil extend outward through corresponding wire holes and connect with adjacent excitation coils to form a parallel connection of the excitation coils of all electromagnetic blocks. The parallel circuit has the same voltage, which ensures that the magnetic field strength generated by all electromagnetic blocks is consistent, and the magnetic force is uniform and stable. This solves the problem of uneven magnetic force caused by voltage division in series circuits, ensuring uniform and reliable adsorption force.

[0027] The wire holes correspond to the positions of the electromagnetic blocks, resulting in neat wiring that solves the problem of messy wiring in multi-coil systems, reduces installation errors and maintenance difficulty, and improves practicality. The end coil is directly connected to the power supply and control switch for centralized control. The power supply can be quickly switched on and off via the control switch to achieve rapid magnetization and demagnetization of the electromagnetic chuck, meeting the needs of rapid start-up and shutdown of electromagnetic chucks in industrial settings and improving work efficiency.

[0028] 7) The high-pressure gas cylinder processing fixture according to 1), wherein:

[0029] The upper surface of several of the electromagnetic blocks has an adsorption surface that matches the arc-shaped surface of the outer surface of the gas cylinder, and the adsorption surface is coated with an anti-slip insulating layer.

[0030] In this invention, the upper surface of several electromagnetic blocks has an adsorption surface that is consistent with the arc surface of the outer surface of the gas cylinder. The adsorption surface is completely attached to the outer surface of the gas cylinder, which increases the contact area between the electromagnetic block and the gas cylinder, makes the magnetic force distribution uniform, improves the stability of the adsorption force, and avoids adsorption failure due to local gaps. In addition, the curved surface attachment reduces the concentration of mechanical stress during adsorption and reduces the risk of damage to the gas cylinder surface.

[0031] The adsorption surface is coated with an anti-slip insulating layer. This layer is applied to the adsorption surface through an electroplating process, resulting in a uniform thickness and a strong bond. The anti-slip layer increases the surface friction coefficient, preventing the gas cylinder from sliding due to vibration during adsorption. The insulating layer isolates the electromagnetic block from the gas cylinder surface, preventing current leakage and potential safety hazards. This meets the safety requirements for operation in flammable and explosive environments. In addition, the anti-slip insulating layer is wear-resistant and corrosion-resistant, and it is not easy to fall off after long-term use, reducing maintenance costs and extending the service life of the equipment.

[0032] Compared with the prior art, this utility model also has the following technical effects:

[0033] In this invention, the clamp base supports the electromagnetic chuck. The positioning block is installed at the middle position of the clamp base and the side of the electromagnetic chuck to connect the two, restricting their relative displacement in the direction perpendicular to the mating surface and ensuring that the upper and lower positions are fixed. The positioning block simplifies the installation process, and the base and the electromagnetic chuck can be quickly aligned without complicated adjustments, improving clamping efficiency. The upper surface of the clamp base is directly attached to the lower surface of the electromagnetic chuck, ensuring the flatness of the connection surface and the uniformity of force.

[0034] Meanwhile, the magnetic block includes an iron core and an excitation coil wound on the outer surface of the iron core. Each electromagnetic block's excitation coil is independently powered, so even if a single coil fails, the remaining coils can still work normally, ensuring high reliability. The two ends of the excitation coil extend outward through corresponding wire holes and connect with adjacent excitation coils to form the excitation coils of all electromagnetic blocks in parallel. The parallel circuit has the same voltage, which can ensure that the magnetic field strength generated by all electromagnetic blocks is consistent, and the magnetic force is uniform and stable. This solves the problem of uneven magnetic force caused by voltage division in series circuits, ensuring uniform and reliable adsorption force.

[0035] In addition, the upper surface of several of the electromagnetic blocks has an adsorption surface that is consistent with the arc surface of the outer surface of the gas cylinder. The adsorption surface is completely attached to the outer surface of the gas cylinder, which increases the contact area between the electromagnetic block and the gas cylinder, makes the magnetic force distribution uniform, improves the stability of the adsorption force, and avoids adsorption failure due to local gaps. In addition, the curved surface attachment reduces the concentration of mechanical stress during adsorption and reduces the risk of damage to the surface of the gas cylinder. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of the fixture for processing high-pressure gas cylinders according to this utility model;

[0037] Figure 2 for Figure 1 Sectional view of AA. Detailed Implementation

[0038] The following detailed description illustrates the specific implementation method:

[0039] The reference numerals in the accompanying drawings include: electromagnetic chuck 1, positioning block 2, clamp base 3, electromagnetic block 4, control switch 5, power supply 6, excitation coil 7, upper positioning arm 8, connecting web 9, lower positioning arm 10, wire through hole 11.

[0040] Reference will now be made in detail to the embodiments disclosed herein. Although this disclosure will be described in conjunction with embodiments and / or examples, they are not intended to limit this disclosure to those embodiments and / or examples. Rather, this disclosure covers alternatives, modifications, and equivalents.

[0041] See the example. Figure 1 and Figure 2 As shown, this embodiment is a fixture for processing high-pressure gas cylinders, including a fixture base 3, a positioning block 2 and an electromagnetic chuck 1. The upper surface of the fixture base 3 is in contact with the lower surface of the electromagnetic chuck 1. The positioning block 2 is installed in the middle position of the side of the fixture base 3 and the electromagnetic chuck 1 to connect the two. Several electromagnetic blocks 4 are evenly distributed along the axial direction on the upper surface of the electromagnetic chuck 1. The several electromagnetic blocks 4 are connected in parallel with each other and are connected in series with the power supply 6 and the control switch 5.

[0042] In this utility model, the clamp base 3 supports the electromagnetic chuck 1. The positioning block 2 is installed in the middle of the side of the clamp base 3 and the electromagnetic chuck 1 to connect the two, restricting the relative displacement of the two in the direction perpendicular to the contact surface, and ensuring that the upper and lower positions are fixed. The setting of the positioning block 2 simplifies the installation process, and the base and the electromagnetic chuck 1 can be quickly aligned without complicated adjustments, which improves the clamping efficiency. The upper surface of the clamp base 3 is directly attached to the lower surface of the electromagnetic chuck 1, ensuring the flatness of the connection surface and the uniformity of force.

[0043] Multiple electromagnetic blocks 4 are evenly distributed along the axial direction on the upper surface of the electromagnetic chuck 1, forming a linear array to ensure uniform adsorption force on the high-pressure gas cylinder. All the parallel electromagnetic blocks 4 are connected in series with the power supply 6 and the control switch 5 to form a complete control loop. The circuit is controlled to be switched on and off uniformly through the control switch 5. The parallel structure ensures that even if a single electromagnetic block 4 fails, the other electromagnetic blocks 4 can still work normally, avoiding the failure of the entire fixture due to the failure of a single electromagnetic block 4. When the electromagnetic blocks 4 are energized, they instantly generate a strong magnetic field to adsorb the workpiece. After the power is cut off, the residual magnetism is extremely low, which facilitates the quick disassembly of the workpiece, shortens the auxiliary time, and improves production efficiency.

[0044] The positioning block 2 consists of two symmetrically arranged blocks. Each positioning block 2 includes an upper positioning arm 8 and a lower positioning arm 10 arranged horizontally to each other. A vertically arranged connecting web plate 9 connects the upper positioning arm 8 and the lower positioning arm 10. The top and bottom ends of the connecting web plate 9 are respectively connected to the same side ends of the upper positioning arm 8 and the lower positioning arm 10.

[0045] This utility model employs two positioning blocks 2 to form a symmetrical structure. The symmetrical arrangement ensures that the force between the electromagnetic chuck 1 and the base is evenly distributed, avoiding component deformation or loosening caused by stress concentration on one side. The positioning block 2, the base, and the electromagnetic chuck 1 are independent components. If any component is worn or damaged, it can be disassembled and replaced individually without the need to scrap the entire fixture, thus reducing maintenance costs. The "embedded" structure of the positioning block 2 achieves longitudinal positioning through mechanical cooperation, reducing reliance on fasteners, simplifying the clamping process, shortening auxiliary time, and improving production efficiency.

[0046] The fixture base 3 and the electromagnetic chuck 1 have positioning grooves and mating grooves on both sides to accommodate the upper positioning arm 8 and the lower positioning arm 10, respectively. The upper positioning arm 8 and the lower positioning arm 10 are longitudinally clamped to the fixture base 3 and the electromagnetic chuck 1 by embedding into the positioning grooves and mating grooves.

[0047] In this invention, after the upper positioning arm 8 is embedded in the mating groove of the electromagnetic chuck 1, the top surface of the mating groove contacts the upper surface of the upper positioning arm 8, restricting the electromagnetic chuck 1 from moving upward. After the lower positioning arm 10 is embedded in the positioning groove of the base, the bottom surface of the positioning groove contacts the lower surface of the lower positioning arm 10, restricting the electromagnetic chuck 1 from moving downward. The operator only needs to align the electromagnetic chuck 1 with the fixture base 3 and insert the positioning arm into the corresponding groove to complete the initial positioning. Compared with the traditional connection method, this shortens the clamping time and improves production efficiency.

[0048] The two connecting web plates 9 are provided with upper and lower through holes respectively. The clamp base 3 is provided with base threaded holes on both sides corresponding to the lower through holes. The electromagnetic chuck 1 is provided with suction cup threaded holes on both sides corresponding to the upper through holes. Two bolts are passed through the lower through holes and screwed into the base threaded holes. At the same time, two other bolts are passed through the upper through holes and screwed into the suction cup threaded holes to fix the base and electromagnetic chuck 1 horizontally.

[0049] In this utility model, the clamp base 3 has base threaded holes on both sides corresponding to the lower through holes, and the electromagnetic chuck 1 has suction cup threaded holes on both sides corresponding to the upper through holes. The specifications of the threaded holes match the specifications of the through holes. Two bolts pass through the two lower through holes and are screwed into the two base threaded holes, while two other bolts pass through the two upper through holes and are screwed into the two suction cup threaded holes. After the bolts are tightened, the positioning block 2, the base and the electromagnetic chuck 1 are clamped by the axial force of the threaded pair, which restricts the relative displacement of the three in the horizontal direction.

[0050] The symmetrical bolt layout ensures even load distribution and prevents overload on a single positioning block 2. The electromagnetic chuck 1 and the clamp base 3 are first pre-positioned by the groove embedding, and then the bolts are tightened for precise positioning. The bolt connection supports quick disassembly. When replacing the electromagnetic chuck 1, only 4 bolts need to be loosened for complete disassembly, which saves disassembly time compared to the traditional all-welded structure and improves work efficiency.

[0051] Several mounting grooves are evenly distributed along the axial direction on the upper surface of the electromagnetic chuck 1. The cross-sectional shape of the mounting groove is adapted to the shape of the electromagnetic block 4, and the depth of the mounting groove is adapted to the height of the electromagnetic block 4. The inner wall of the mounting groove is coated with an insulating coating.

[0052] In this invention, the upper surface of the electromagnetic chuck 1 features multiple mounting grooves linearly and uniformly distributed along its central axis. These axially distributed grooves create a regular array of electromagnetic blocks 4. When adsorbing high-pressure gas cylinders, the magnetic lines of force radiate uniformly along the axis, preventing excessive localized suction that could deform the workpiece. The electromagnetic blocks 4 are in close contact with the bottom of the grooves, allowing for rapid heat dissipation through the chuck's metal substrate, preventing overheating of the coil due to prolonged energization. An insulating coating isolates unnecessary conductive areas, improving electromagnetic conversion efficiency. The coating also isolates the electromagnetic blocks 4 from the electromagnetic chuck 1 substrate, preventing short-circuit faults caused by substrate leakage. The independent insulation design ensures that a failure in one electromagnetic block 4 will not trigger a chain reaction of damage to adjacent modules. The smooth surface of the insulating coating facilitates the cleaning of iron filings and other impurities.

[0053] The shape of the mounting groove is uniquely matched to the shape of the electromagnetic block 4 to avoid installation errors. The matching mounting groove provides mechanical restraint, so even if the coil lead of the electromagnetic block 4 is loose, it will not fall off due to vibration. The depth of the mounting groove is equal to the height of the electromagnetic block 4. The depth matching design ensures that there is no wobbling gap after the electromagnetic block 4 is installed, and ensures that the upper surface of the electromagnetic block 4 is flush with the upper surface of the electromagnetic chuck 1 after installation, avoiding the protruding surface from affecting the workpiece adhesion.

[0054] The electromagnetic block 4 is fixed in the mounting groove. Several wire through holes 11 are distributed along the axial direction at both ends of the mounting groove. Each wire through hole 11 corresponds to one electromagnetic block 4. The electromagnetic block 4 includes an iron core and an excitation coil 7 wound on the outer surface of the iron core. The two ends of the excitation coil 7 extend outward through the corresponding wire through holes 11 and are electrically connected to the adjacent excitation coil 7 to form the excitation coil 7 of all electromagnetic blocks 4 connected in parallel. The two ends of the excitation coil 7 on the electromagnetic block 4 located at the end of the electromagnetic chuck 1 extend outward through the corresponding wire through holes 11 and are connected in series with the power supply 6 and the control switch 5.

[0055] In this invention, the magnetic block includes an iron core and an excitation coil 7 wound on the outer surface of the iron core. Each electromagnetic block 4 has its excitation coil 7 powered independently. Even if a single coil fails, the remaining coils can still work normally, resulting in high reliability. The two ends of the excitation coil 7 extend outward through the corresponding wire holes 11 and connect with the adjacent excitation coil 7 to form a parallel connection of the excitation coils 7 of all electromagnetic blocks 4. The parallel circuit has the same voltage, which can ensure that the magnetic field strength generated by all electromagnetic blocks 4 is consistent, and the magnetic force is uniform and stable. This solves the problem of uneven magnetic force caused by voltage division in series circuits, ensuring uniform and reliable adsorption force.

[0056] The wire through-hole 11 corresponds to the position of the electromagnetic block 4, and the wiring is neat, which solves the problem of messy wiring of multiple coils, reduces installation errors and maintenance difficulty, and improves practicality; the end coil is directly connected to the power supply 6 and the control switch 5 to realize centralized control. The power supply 6 can be quickly turned on and off through the control switch 5 to realize the rapid magnetization and demagnetization of the electromagnetic chuck 1, which meets the needs of rapid start and stop of the electromagnetic chuck 1 in industrial scenarios and improves work efficiency.

[0057] The upper surface of several electromagnetic blocks 4 has an adsorption surface that matches the arc surface of the outer surface of the gas cylinder, and the adsorption surface is coated with an anti-slip insulating layer.

[0058] In this invention, the upper surface of several electromagnetic blocks 4 has an adsorption surface that is consistent with the arc surface of the outer surface of the gas cylinder. The adsorption surface is completely attached to the outer surface of the gas cylinder, which increases the contact area between the electromagnetic blocks 4 and the gas cylinder, makes the magnetic force distribution uniform, improves the stability of the adsorption force, and avoids adsorption failure due to local gaps. In addition, the curved surface attachment reduces the concentration of mechanical stress during adsorption and reduces the risk of damage to the surface of the gas cylinder.

[0059] The adsorption surface is coated with an anti-slip insulating layer. The anti-slip insulating layer is attached to the adsorption surface through an electroplating process, with uniform thickness and firm adhesion. The anti-slip layer increases the surface friction coefficient to prevent the gas cylinder from sliding due to vibration during adsorption. The insulating layer isolates the electromagnetic block 4 from the gas cylinder surface to avoid current leakage and safety hazards, meeting the safety operation requirements in flammable and explosive environments. In addition, the anti-slip insulating layer is wear-resistant and corrosion-resistant, and is not easy to fall off after long-term use, reducing maintenance costs and extending the service life of the equipment.

[0060] The above are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A clamp for processing a high-pressure gas cylinder, characterized by, The device includes a clamp base, a positioning block, and an electromagnetic chuck. The upper surface of the clamp base is in contact with the lower surface of the electromagnetic chuck. The positioning block is installed at the middle position of the clamp base and the side of the electromagnetic chuck to connect the two. Several electromagnetic blocks are evenly distributed along the axial direction on the upper surface of the electromagnetic chuck. The electromagnetic blocks are connected in parallel with each other and are connected in series with the power supply and the control switch.

2. The high-pressure gas cylinder processing fixture according to claim 1, characterized in that: The positioning blocks are two symmetrically arranged. Each positioning block includes an upper positioning arm and a lower positioning arm arranged horizontally to each other. A vertically arranged connecting web plate connects the upper positioning arm and the lower positioning arm. The top and bottom ends of the connecting web plate are respectively connected to the same side ends of the upper positioning arm and the lower positioning arm.

3. The high-pressure gas cylinder processing fixture according to claim 2, characterized in that: The fixture base has positioning grooves on both sides that are adapted to the lower positioning arm, and the electromagnetic chuck has mating grooves on both sides that are adapted to the upper positioning arm. The lower positioning arm is embedded in the positioning groove and the upper positioning arm is embedded in the mating groove, which longitudinally locks the fixture base and the electromagnetic chuck.

4. The high-pressure gas cylinder processing fixture according to claim 2, characterized in that: The two connecting web plates are provided with upper and lower through holes respectively. The clamp base is provided with base threaded holes on both sides corresponding to the lower through holes. The electromagnetic chuck is provided with suction cup threaded holes on both sides corresponding to the upper through holes. Two bolts are passed through the lower through holes and screwed into the base threaded holes, while two other bolts are passed through the upper through holes and screwed into the suction cup threaded holes to fix the base and the electromagnetic chuck laterally.

5. The high-pressure gas cylinder processing fixture according to claim 1, characterized in that: The upper surface of the electromagnetic chuck has several mounting grooves evenly distributed along the axial direction. The cross-sectional shape of the mounting groove is adapted to the shape of the electromagnetic block, the depth of the mounting groove is adapted to the height of the electromagnetic block, and the inner wall of the mounting groove is coated with an insulating coating.

6. The high-pressure gas cylinder processing fixture according to claim 5, characterized in that: The electromagnetic block is fixed in the mounting groove. Several wire through holes are distributed axially at both ends of the mounting groove. Each wire through hole corresponds to one electromagnetic block. The electromagnetic block includes an iron core and an excitation coil wound on the outer surface of the iron core. The two ends of the excitation coil extend outward through the corresponding wire through holes and are electrically connected to the adjacent excitation coils to form the excitation coils of all electromagnetic blocks in parallel. The two ends of the excitation coil on the electromagnetic block located at the end of the electromagnetic chuck extend outward through the corresponding wire through holes and are connected in series with the power supply and control switch.

7. The high-pressure gas cylinder processing fixture according to claim 6, characterized in that: The upper surface of several of the electromagnetic blocks has an adsorption surface that matches the arc-shaped surface of the outer surface of the gas cylinder, and the adsorption surface is coated with an anti-slip insulating layer.

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