A laser cutting device for electric energy metering box production

Abstract

The application relates to the technical field of laser plate cutting equipment, in particular to a laser cutting equipment for electric energy metering box production, which comprises a bed body, a feeding module, a workbench and a laser cutting head, at least two workbenches are arranged on the bed body, the feeding module is arranged on the bed body, the laser cutting head is connected to the feeding module, the laser cutting head is located on the upside of the workbench, and the feeding module is used for driving the laser cutting head to move in the X, Y and Z axial directions. The lifting assembly is arranged in the workbench, the hydraulic cylinder drives the rocker to drive the supporting strip to move up and down, the temporary support of the supporting strip when the plate is fed and discharged and the stable support of the supporting strip when the laser is cut are flexibly switched, the direct contact between the plate and the slag is effectively avoided, the generation of scratches, indentations or pits on the surface of the plate is prevented, meanwhile, the stability of the plate during the laser cutting is ensured, and the cutting precision is improved.

Description

Technical Field

[0001] This invention relates to the field of laser cutting equipment technology, specifically a laser cutting device for the production of electricity metering boxes. Background Technology

[0002] Currently, mainstream laser cutting equipment generally uses a rack and pinion support table as the foundation for supporting and positioning the sheet metal. The rack and pinion support table consists of a series of parallel metal strips with gaps between them for the laser beam to penetrate and for molten slag to fall off. Although the structure of the rack and pinion support table is simple and reliable, it has the following defects in actual production: First, under the high temperature of laser cutting, the molten metal is prone to splashing and solidifying on the top and sides of the supporting metal strips below, forming hard protruding particles or burr-like attachments, thus destroying the original flatness of the support surface; Second, when subsequent sheet metal is placed or micro-adjustments are required during loading and positioning, the lower surface of the sheet metal will make hard sliding contact with the metal strips with molten slag particles attached. For thin plates used in electricity metering boxes, this contact can easily leave linear scratches, indentations, or pits on the bottom surface of the sheet metal.

[0003] To address the aforementioned problems, existing technologies offer several solutions, such as adjusting parameters like laser power, speed, and gas pressure, or using designs that incorporate breaks or grooves at the top of the metal strip to reduce slag adhesion. However, this only reduces the amount of adhesion, not eliminates it entirely; slag accumulation will still occur as the equipment runs continuously for extended periods. Another example is applying a protective film to the sheet metal before cutting to prevent direct contact between the metal sheet and the metal strip; while effective, this significantly increases material costs and the time required for applying and removing the film, reducing production efficiency. Yet another approach involves adding rolling balls or adjustable push rollers between the racks to convert sliding friction to rolling friction when moving the sheet metal. However, these mechanisms are themselves exposed to slag contamination, and their bearings or sliding surfaces may seize and fail due to slag splashing in, resulting in high maintenance costs and failing to protect the sheet metal from indentations caused by thermal deformation pressing against the contaminated racks during stationary cutting.

[0004] Therefore, there is an urgent need for a laser cutting device that can completely isolate the contamination of the sheet metal support surface by the cutting slag while ensuring stable support, so as to adapt to the efficient and high-quality production of thin sheet metal parts for power metering boxes that have strict requirements for surface quality. Summary of the Invention

[0005] The purpose of this invention is to provide a laser cutting device for the production of electricity metering boxes, in order to solve the problem that when cutting metal plates, the current method of using a rack and pinion support plate to support the metal plate results in the molten metal adhering to the support plate during laser cutting, and the movement of the metal plate after placing it on the support plate during loading and unloading causes scratches on the surface of the metal plate. This invention also addresses the shortcomings of existing technical solutions.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A laser cutting device for producing electricity metering boxes includes a bed, a feed module, a worktable, and a laser cutting head. At least two worktables are mounted on the bed. The feed module is mounted on the bed, and the laser cutting head is connected to the feed module and located on the upper side of the worktable. The feed module drives the laser cutting head to move in the X, Y, and Z axes. The worktable includes a mounting frame and support plates. The mounting frame is frame-shaped, and each mounting frame contains multiple support plates. The front and rear ends of each support plate are fixedly connected to the mounting frame. The upper end of the plate forms a support plane. Each mounting frame has at least two sets of lifting components. The lifting components include at least two rockers, a support bar, and a hydraulic cylinder. Rockers are provided on both the front and rear sides of the mounting frame. The lower end of the rocker is hinged to the mounting frame, and the upper end is hinged to the support bar. The support bar is parallel to the support plate. A hydraulic cylinder is fixedly installed at the rear end of the mounting frame. The output end of the hydraulic cylinder is slidably connected to the rocker located on the rear side of the mounting frame. The output end of the hydraulic cylinder is used to push the rocker to swing upward. When the hydraulic cylinder is at the lower dead point, the support bar is completely retracted below the support plane.

[0007] By incorporating a rocker arm and support bars within the mounting frame, a hydraulic cylinder drives the rocker arm upwards during loading and unloading, raising the support bars above the support plane. This provides a flat, slag-free support surface for the sheet metal, preventing direct contact between the sheet metal and slag on the support bars during loading, unloading, and movement, effectively preventing scratches, indentations, or pits on the sheet metal surface. Furthermore, after loading and sheet metal positioning, the hydraulic cylinder drives the support bars downwards below the support plane, ensuring the sheet metal is completely supported by the support plates during laser cutting. This guarantees the stability of the sheet metal during laser cutting and prevents minor displacement caused by the high-pressure gas on the laser cutting head, ensuring the precision of laser cutting. Moreover, compared to large-area support plates, fewer support bars are used, and they only provide temporary support during loading and unloading, reducing the contact area between the sheet metal and slag, thus significantly reducing slag adhesion. Even if a small amount of slag adheres to the support bars, it facilitates subsequent cleaning and maintenance.

[0008] Preferably, each lifting assembly has a first baffle and a second baffle on both its left and right sides. The first baffle includes a first vertical portion and a first inclined portion, and the second baffle includes a second vertical portion and a second inclined portion. The first vertical portion is located on the left side of the support bar, and the second vertical portion is located on the right side of the support bar. The front and rear ends of the first and second vertical portions are rotatably connected to the inner sidewalls of the front and rear sides of the mounting frame, respectively. A torsion spring is provided at the rotatable connection points between the first and second vertical portions and the mounting frame. The torsion spring is used to support the first vertical portion. The second vertical part provides torque toward the support bar. The first inclined part is located at the upper end of the first vertical part, and the second inclined part is located at the upper end of the second vertical part. When the support bar is at the lower stop point, the first inclined part and the second inclined part abut against each other, and both the first inclined part and the second inclined part are located below the support plane. Limiting plates are provided on both the left and right sides of the support bar. The limiting plates extend to the lower side of the support bar. When the support bar moves to the support plane, the limiting plates on both sides of the support bar are slidably connected to the first inclined part and the second inclined part, respectively.

[0009] By setting baffles No. 1 and No. 2 on both sides of each support bar, after the loading action and plate position adjustment are completed, the hydraulic cylinder drives the support bar to descend below the support plane. During the process, the limiting plates on both sides of the support bar slide relative to the No. 1 and No. 2 inclined parts on the left and right sides until the No. 1 and No. 2 inclined parts disengage from the limiting plates and the side walls of the support bar. At this time, the No. 1 and No. 2 inclined parts abut against each other under the action of the torsion spring, forming a barrier against molten slag on the upper side of the support bar. This effectively prevents molten slag generated during laser cutting from splashing and adhering to the upper surface of the support bar, further ensuring the cleanliness of the plate support surface.

[0010] Furthermore, when the hydraulic cylinder drives the support bar to rise above the support surface, during this process, the limiting plates on both sides of the support bar contact the first and second inclined parts. As the support bar continues to rise, the limiting plates will push the first and second inclined parts to overcome the torsion of the torsion spring and separate until the support bar is completely raised above the support plane. At this time, the first and second inclined parts remain separated under the restriction of the limiting plates, ensuring that the support bar can rise smoothly during loading and unloading and provide stable support for the plate. At the same time, the limiting plates ensure the stability of the support bar during the rising and falling process, preventing the support bar from deviating or shaking during the movement, thereby ensuring the stability of the plate during loading, unloading and movement.

[0011] Preferably, the length of the first inclined portion is L1, the length of the second inclined portion is L2, L1≥L2, the angle between the first inclined portion and the first vertical portion is α1, the angle between the second inclined portion and the second vertical portion is α2, α1>α2, and when the support bar is located at the lower stop point, the top of the second inclined portion is in contact with the lower side of the first inclined portion, and an anti-sticking gap is formed between the top of the first inclined portion and the upper side of the second inclined portion.

[0012] By setting the length of the first inclined section to be longer than that of the second inclined section, and the angle between the first inclined section and the first vertical section to be greater than the angle between the second inclined section and the second vertical section, when the support bar is at the lower stop point, the top of the second inclined section and the lower side of the first inclined section are tightly fitted together, effectively preventing molten slag from entering between them. At the same time, the anti-sticking gap formed between the top of the first inclined section and the upper side of the second inclined section avoids the adhesion of molten slag on the contact surface between the two, reducing the difficulty of subsequent cleaning, and ensuring that the first and second inclined sections can be smoothly separated during the rise of the support bar, thus improving the ease of use and reliability of the equipment.

[0013] Preferably, the upper end of the first vertical part is provided with a first support part, the upper end of the second vertical part is provided with a second support part, the first support part is parallel to the first vertical part, the second support part is parallel to the second vertical part, and when the support bar is located at the lower stop point, the top ends of the first support part and the second support part are both located in the support plane.

[0014] By setting a first support at the top of the first vertical section and a second support at the top of the second vertical section, when the support bar is at the lower stop point, the tops of both the first and second support sections are located within the support plane. This design ensures that the bottom of the sheet metal receives stable and comprehensive support during laser cutting, avoiding problems such as sheet metal deformation or reduced cutting accuracy caused by insufficient support. Furthermore, the first and second support parts are flush with the support plane. After the laser cutting of the sheet metal is completed, the hydraulic cylinder pushes the rocker arm to swing upward. The first and second vertical parts rotate along the hinge point of the mounting bracket. When the first and second vertical parts rotate, they respectively drive the first and second support parts to rotate. Since the first and second support parts are flush with the support plane, they gradually detach from the lower surface of the sheet metal after rotating with the first and second vertical parts. Even if slag or spatter adheres to the first or second support parts during the laser cutting of the sheet metal, the rotation of the first and second support parts away from the lower surface of the sheet metal allows them to be removed in time when they no longer need to bear the support function, reducing the contact time with the sheet metal. Slag or spatter will not cause secondary damage to the surface of the sheet metal, ensuring the surface quality of the sheet metal after cutting.

[0015] Preferably, a first reinforcing part is provided between the first supporting part and the first inclined part, and a second reinforcing part is provided between the second supporting part and the second inclined part. The upper end of the first reinforcing part is fixedly connected to the right side wall of the first supporting part, and the lower end is fixedly connected to the upper side of the first inclined part. The upper end of the second reinforcing part is fixedly connected to the left side wall of the second supporting part, and the lower end is fixedly connected to the upper side of the second inclined part.

[0016] By incorporating Reinforcing Sections No. 1 and No. 2, the connection strength between Support Section No. 1 and Inclined Section No. 1, and between Support Section No. 2 and Inclined Section No. 2, is effectively enhanced. This ensures that Baffles No. 1 and No. 2 maintain structural stability and integrity when subjected to molten slag splash impacts or plate pressure, preventing deformation or damage and thus extending the equipment's service life and reducing maintenance costs. Simultaneously, the rational layout of Reinforcing Sections No. 1 and No. 2 also improves the overall structural rigidity of the workbench, providing effective support for the stable support of the plate.

[0017] Preferably, a ceramic layer is provided on the outer side wall of the inclined portion away from the vertical portion, the ceramic layer having a thickness of 0.5 to 1.5 mm, and the end of the ceramic layer away from the vertical portion having a rounded corner.

[0018] By setting a ceramic layer on the outer wall of the first inclined section, the hydraulic cylinder pushes the rocker arm to swing upward. When the first inclined section contacts the lower surface of the plate, the ceramic layer, with its high hardness, high temperature resistance, corrosion resistance, and low coefficient of friction, can effectively resist the erosion and adhesion of high-temperature molten slag generated during laser cutting. This prevents the first inclined section from wearing out and corroding due to long-term contact with molten slag, thus extending its service life. Simultaneously, the ceramic layer thickness is set to 0.5–1.5 mm, providing sufficient protection without increasing the weight of the first inclined section due to excessive thickness. Furthermore, the low coefficient of friction of the ceramic layer reduces the friction between the plate and the first inclined section during loading, unloading, and movement, further reducing the possibility of scratches, indentations, and other defects on the plate surface, ensuring the surface quality of the plate. Moreover, the rounded corner at the end of the ceramic layer away from the first vertical section reduces friction and scratching between the first inclined section and the plate or other components during relative movement, preventing damage to the plate surface or other equipment parts. It also helps molten slag slide off the ceramic layer surface, reducing slag adhesion and accumulation.

[0019] Preferably, the support bar includes an mounting part and a limiting part. The mounting part is hinged to the rocker arm, and the limiting part is disposed on the mounting part. The lower end face of the limiting part and the upper end face of the mounting part are provided with multiple equally spaced mounting grooves. The mounting grooves are hemispherical, and ball bearings are rotatably connected in the mounting grooves. The mounting grooves on the limiting part all penetrate the upper end face of the limiting part, and the ball bearings extend to the upper side of the limiting part.

[0020] By incorporating mounting and limiting sections on the support bar, and installing ball bearings in mounting grooves on their contact surfaces, the ball bearings can roll against the lower surface of the board when the support bar rises above the supporting plane to provide support. This design transforms traditional sliding friction into rolling friction, reducing the friction between the board and the support bar during loading, unloading, and movement. This effectively prevents scratches, indentations, and other defects on the board surface caused by friction, ensuring the surface quality of the board.

[0021] Preferably, the upper end face of the limiting part is provided with chamfers on both the left and right sides, and the chamfers are surface hardened to 58-62 HRC, and the surface roughness is less than Ra1.6.

[0022] By setting chamfers on both sides of the upper end face of the limiting part, the hydraulic cylinder pushes the rocker arm to swing upward. The chamfers slide relative to the lower sidewalls of the first and second inclined parts, guiding the first and second inclined parts to separate smoothly and avoiding jamming. This ensures that the support bar can rise smoothly and steadily onto the support plane, providing stable support for the plate. Simultaneously, the chamfer surface is hardened to 58-62 HRC, improving its hardness and wear resistance. This allows the chamfer surface to better withstand the friction and pressure generated during the sliding of the first and second inclined parts, reducing wear and extending the equipment's service life. The surface roughness design of less than Ra1.6 makes the chamfer surface smoother, further reducing friction with the first and second inclined parts and ensuring the smoothness of the support bar's ascent.

[0023] Preferably, the cross-section of the support piece is crescent-shaped, and multiple support pieces are inclinedly arranged in the mounting frame.

[0024] By designing the support plates with a crescent-shaped cross-section and tilting them within the mounting frame, the sheet metal is placed on a support plane composed of multiple support plates during laser cutting. The crescent-shaped cross-section reduces the number of contact points with the sheet metal, significantly reducing friction and heat accumulation caused by large-area contact compared to traditional flat support plates. This reduces the risk of deformation due to uneven heating of the sheet metal. Furthermore, the tilted support plates allow the sheet metal to adhere more tightly to them under its own weight, further enhancing the stability of the support and ensuring the flatness of the sheet metal during laser cutting.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention, by setting up a lifting component inside the workbench and using a hydraulic cylinder to drive a rocker arm to move the support bar up and down, realizes the flexible switching between temporary support of the support bar when loading and unloading the sheet and stable support of the support plate during laser cutting. This effectively avoids direct contact between the sheet and molten slag, prevents the generation of scratches, indentations or pits on the sheet surface, and at the same time ensures the stability of the sheet during laser cutting and improves the cutting accuracy.

[0026] 2. This invention provides a barrier to prevent molten slag from splashing and adhering to the support bar by setting a first baffle and a second baffle on the left and right sides of the support bar. When the support bar descends below the support plane, the barrier prevents molten slag from splashing and adhering to the support bar, thus further ensuring the cleanliness of the plate support surface. When the support bar rises, the limiting plate pushes the first and second inclined parts to separate, ensuring the smooth loading and unloading of materials. At the same time, the limiting plate ensures the stability of the support bar's movement.

[0027] 3. The present invention provides stable and comprehensive support for the bottom of the plate during laser cutting by setting a first support part and a second support part on the first baffle and the second baffle respectively, so as to avoid deformation of the plate or a decrease in cutting accuracy. After the cutting is completed, the first support part and the second support part rotate and detach from the lower surface of the plate, reducing the contact time with the plate and preventing molten slag or spatter from causing secondary damage to the surface of the plate. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the laser cutting equipment of the present invention; Figure 2 This is a schematic diagram of the mounting bracket in the laser cutting equipment of the present invention; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a left view of the mounting bracket in the laser cutting equipment of the present invention; Figure 5 for Figure 4 Full sectional view of BB; Figure 6 for Figure 5 A magnified view of a section at point C; Figure 7 This is a process state diagram of the laser cutting equipment of the present invention when lifting the metal sheet; Figure 8 This is a diagram showing the state of the metal sheet when the laser cutting equipment of the present invention is fully lifted.

[0029] In the diagram: 1. Bed; 2. Feed module; 3. Worktable; 4. Laser cutting head; 5. Mounting bracket; 6. Support plate; 7. Rocker arm; 8. Support bar; 8a. Mounting part; 8b. Restricting part; 8c. Chamfer; 9. Hydraulic cylinder; 10. First baffle; 10a. First vertical part; 10b. First inclined part; 10c. First support part; 10d. First reinforcing part; 11. Second baffle; 11a. Second vertical part; 11b. Second inclined part; 11c. Second support part; 11d. Second reinforcing part; 12. Ceramic layer; 13. Mounting groove; 14. Ball bearing; 15. Limiting plate; 16. Anti-stick gap. Detailed Implementation

[0030] Please see Figures 1 to 8 This invention provides a laser cutting device for the production of electricity metering boxes, the technical solution of which is as follows: A laser cutting device for the production of electricity metering boxes, please refer to [link / reference]. Figure 1 Figure 5 shows a bed 1, a feed module 2, a worktable 3, and a laser cutting head 4. The bed 1 has three worktables 3. The feed module 2 is mounted on the bed 1. The laser cutting head 4 is connected to the feed module 2 and is located on the upper side of the worktable 3. The feed module 2 is used to drive the laser cutting head 4 to move in the X, Y, and Z axis directions. The worktable 3 includes a mounting frame 5 and support plates 6. The mounting frame 5 is frame-shaped. Each mounting frame 5 has multiple support plates 6. The front and rear ends of the support plates 6 are fixedly connected to the mounting frame 5. The upper ends of the multiple support plates 6 form a support plane. The cross-section of the support plates 6 is crescent-shaped. The multiple support plates 6 are inclinedly arranged in the mounting frame 5.

[0031] For further details, please refer to Figures 2 to 4 , Figure 6Each mounting frame 5 contains two sets of lifting components. Each lifting component includes three rocker arms 7, support bars 8, and hydraulic cylinders 9. Rocker arms 7 are located on both the front and rear sides of the mounting frame 5. The lower end of each rocker arm 7 is hinged to the mounting frame 5, and the upper end is hinged to the support bar 8. The support bar 8 is parallel to the support plate 6. The support bar 8 includes a mounting part 8a and a limiting part 8b. The mounting part 8a is hinged to the rocker arms 7, and the limiting part 8b is located above the mounting part 8a. Multiple equally spaced mounting grooves 13 are provided on the lower end face of the limiting part 8b and the upper end face of the mounting part 8a. The mounting grooves 13 are hemispherical, and rollers are rotatably connected within the mounting grooves 13. The ball 14 and the mounting groove 13 on the limiting part 8b both penetrate the upper end face of the limiting part 8b, and the ball 14 extends to the upper side of the limiting part 8b. Chamfers 8c are provided on both the left and right sides of the upper end face of the limiting part 8b. The chamfers 8c are surface hardened to 58-62 HRC and the surface roughness is less than Ra1.6. A hydraulic cylinder 9 is fixedly installed at the rear end of the mounting bracket 5. The output end of the hydraulic cylinder 9 is slidably connected to the rocker arm 7 located on the rear side of the mounting bracket 5. The output end of the hydraulic cylinder 9 is used to push the rocker arm 7 to swing upward. When the hydraulic cylinder 9 is at the lower stop point, the support bar 8 is completely retracted below the support plane.

[0032] For further details, please refer to Figure 3 and Figure 6Each lifting assembly has a first baffle 10 and a second baffle 11 on both the left and right sides. The first baffle 10 includes a first vertical part 10a and a first inclined part 10b, and the second baffle 11 includes a second vertical part 11a and a second inclined part 11b. The first vertical part 10a is located on the left side of the support bar 8, and the second vertical part 11a is located on the right side of the support bar 8. The front and rear ends of the first vertical part 10a and the second vertical part 11a are rotatably connected to the inner sidewalls of the front and rear sides of the mounting frame 5, respectively. A torsion spring is provided at the rotatable connection point between the first vertical part 10a and the second vertical part 11a and the mounting frame 5. The torsion spring provides torque to the first vertical part 10a and the second vertical part 11a toward the support bar 8. The first inclined part 10b is located on the first vertical part 10a. At the upper end of 0a, the second inclined part 11b is located at the upper end of the second vertical part 11a. When the support bar 8 is at the lower stop point, the first inclined part 10b and the second inclined part 11b abut against each other, and both the first inclined part 10b and the second inclined part 11b are located below the support plane. Limiting plates 15 are provided on both the left and right sides of the support bar 8. The limiting plates 15 extend to the lower side of the support bar 8. When the support bar 8 moves to the support plane, the limiting plates 15 on both sides of the support bar 8 are slidably connected to the first inclined part 10b and the second inclined part 11b, respectively. A ceramic layer 12 is provided on the outer wall of the first inclined part 10b away from the first vertical part 10a. The thickness of the ceramic layer 12 is 0.8mm, and the end of the ceramic layer 12 away from the first vertical part 10a is provided with a rounded corner. The length of the first inclined part 10b is L1, the length of the second inclined part 11b is L2, L1≥L2, the angle between the first inclined part 10b and the first vertical part 10a is α1, the angle between the second inclined part 11b and the second vertical part 11a is α2, α1>α2, when the support bar 8 is at the lower stop point, the top of the second inclined part 11b is in contact with the lower side of the first inclined part 10b, and an anti-adhesion gap 16 is formed between the top of the first inclined part 10b and the upper side of the second inclined part 11b. A first support part 10c is provided at the upper end of the first vertical part 10a, and a second support part 11c is provided at the upper end of the second vertical part 11a. The first support part 10c is parallel to the first vertical part 10a, and the second support part 11c is parallel to the second vertical part 11a. When the support bar 8 is at the lower stop point, the top ends of the first support part 10c and the second support part 11c are both located within the support plane. A first reinforcing part 10d is provided between the first support part 10c and the first inclined part 10b, and a second reinforcing part 11d is provided between the second support part 11c and the second inclined part 11b. The upper end of the first reinforcing part 10d is fixedly connected to the right side wall of the first support part 10c, and the lower end is fixedly connected to the upper side of the first inclined part 10b. The upper end of the second reinforcing part 11d is fixedly connected to the left side wall of the second support part 11c, and the lower end is fixedly connected to the upper side of the second inclined part 11b.

[0033] Working principle: Please refer to Figures 1 to 8Before laser cutting the metal sheet, the hydraulic cylinder 9 is driven to push the rear rocker arm 7 to swing upward. The rear rocker arm 7 swings upward and drives the support bar 8 to move upward. The hinge point between the front rocker arm 7 and the mounting bracket 5 rotates. When the support bar 8 moves above the support plane, the hydraulic pressure of the hydraulic cylinder 9 is maintained. At this time, the upper end of the support bar 8 is higher than the support plane. The metal sheet is placed on the support bar 8. The bottom of the metal sheet forms rolling contact with the ball bearings 14 on the support bar 8, which effectively reduces the friction when the sheet is placed and avoids scratches or indentations on the surface of the sheet caused by friction. After adjusting the position of the metal plate, the actuator of the hydraulic cylinder 9 is slowly retracted. As the actuator of the hydraulic cylinder 9 moves downward, the rocker arm 7 swings downward under the weight of the metal plate, the support bar 8, and the rocker arm 7, causing the support bar 8 to descend accordingly. As the support bar 8 moves downward, the limiting plates 15 on both sides of the support bar 8 slide relative to the first inclined portion 10b and the second inclined portion 11b. As the support bar 8 continues to move downward, the first inclined portion 10b and the second inclined portion 11b slide relative to the side walls of the support bar 8. Relative sliding occurs, and under the torsion of the torsion spring, the first inclined part 10b and the second inclined part 11b gradually move closer together. When the support bar 8 descends to its lower stop point, the first inclined part 10b and the second inclined part 11b are in close contact, and both are located below the support plane. At this time, the tops of the first support part 10c and the second support part 11c are both located within the support plane, and the lower end of the metal sheet is in contact with the support bar 8, the first support part 10c, and the second support part 11c, thus completing the loading of the metal sheet. During laser cutting of the metal sheet, the laser cutting head 4, driven by the feed module 2, performs laser cutting on the metal sheet according to the preset cutting path. Because the support plate 6 has a crescent-shaped cross-section and is inclined, the contact points between the sheet and the support plate 6 are reduced, reducing friction and heat accumulation, effectively reducing the risk of deformation caused by uneven heating of the sheet. Meanwhile, the first baffle 10 and the second baffle 11, under the action of the first support part 10c and the second support part 11c, provide stable support for the plate, ensuring the flatness of the plate during laser cutting. During the cutting process, the ceramic layer 12 on the outer wall of the first inclined part 10b, with its high hardness, high temperature resistance, corrosion resistance and low coefficient of friction, effectively resists the erosion and adhesion of the high-temperature molten slag generated during laser cutting, avoiding wear and corrosion of the first inclined part 10b due to long-term contact with molten slag. Throughout the laser cutting process of the metal plate, the anti-sticking gap 16 formed at the top of the first inclined part 10b and the second inclined part 11b effectively prevents the molten slag generated during the cutting process from sticking between the first inclined part 10b and the second inclined part 11b.After the laser cutting of the metal sheet is completed, the hydraulic cylinder 9 is driven to push the rear rocker arm 7 to swing upward. The rear rocker arm 7 swings upward and drives the support bar 8 to move upward. The hinge point between the front rocker arm 7 and the mounting bracket 5 rotates. During the upward movement of the support bar 8, the chamfers 8c on both sides of the upper end face of the support bar 8 slide and connect with the lower sides of the first inclined part 10b and the second inclined part 11b respectively. The support bar 8 pushes the first inclined part 10b and the second inclined part 11b to gradually separate. As the support bar 8 continues to move upward, the first inclined part 10b and the second inclined part 11b completely separate. The limiting plates 15 on both sides slide relative to the first inclined part 10b and the second inclined part 11b again. When the support bar 8 rises above the support plane, the lower surface of the metal sheet separates from the upper end of the support plate 6. The cut metal sheet forms rolling contact with the ball bearings 14 on the support bar 8 under the action of gravity. At this time, the metal sheet can be easily removed from the equipment to complete the unloading operation.

[0034] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. A laser cutting device for producing electricity metering boxes, comprising a bed, a feed module, a worktable, and a laser cutting head, wherein at least two worktables are disposed on the bed, the feed module is disposed on the bed, the laser cutting head is connected to the feed module and is located on the upper side of the worktable, and the feed module is used to drive the laser cutting head to move in the X, Y, and Z axis directions, characterized in that, The workbench includes a mounting frame and support plates. The mounting frame is frame-shaped, and each mounting frame contains multiple support plates. The front and rear ends of the support plates are fixedly connected to the mounting frame, and the upper ends of the multiple support plates form a support plane. Each mounting frame contains at least two sets of lifting components. The lifting components include at least two rockers, support bars, and hydraulic cylinders. Rockers are provided on both the front and rear sides of the mounting frame. The lower end of the rocker is hinged to the mounting frame, and the upper end is hinged to the support bar. The support bar is parallel to the support plates. A hydraulic cylinder is fixedly installed at the rear end of the mounting frame. The output end of the hydraulic cylinder is slidably connected to the rocker located on the rear side of the mounting frame. The output end of the hydraulic cylinder is used to push the rocker to swing upward. When the hydraulic cylinder is at its lower stop point, the support bar is completely retracted below the support plane. Each lifting assembly has a first baffle and a second baffle on both its left and right sides. The first baffle includes a first vertical section and a first inclined section, and the second baffle includes a second vertical section and a second inclined section. The first vertical section is located on the left side of the support bar, and the second vertical section is located on the right side of the support bar. The front and rear ends of the first and second vertical sections are rotatably connected to the inner sidewalls of the front and rear sides of the mounting frame, respectively. Torsion springs are provided at the rotatable connection points between the first and second vertical sections and the mounting frame. These torsion springs are used to provide support for the first and second vertical sections. The first vertical part provides torque toward the support bar. The first inclined part is located at the upper end of the first vertical part, and the second inclined part is located at the upper end of the second vertical part. When the support bar is at the lower stop point, the first inclined part and the second inclined part abut against each other, and both the first inclined part and the second inclined part are located below the support plane. Limiting plates are provided on both the left and right sides of the support bar. The limiting plates extend to the lower side of the support bar. When the support bar moves to the support plane, the limiting plates on both sides of the support bar are slidably connected to the first inclined part and the second inclined part, respectively. The first vertical section is provided with a first support section at its upper end, and the second vertical section is provided with a second support section at its upper end. The first support section is parallel to the first vertical section, and the second support section is parallel to the second vertical section. When the support bar is located at the lower stop point, the tops of the first support section and the second support section are both located within the support plane.

2. The laser cutting equipment for producing electricity metering boxes according to claim 1, characterized in that, The length of the first inclined part is L1, the length of the second inclined part is L2, L1≥L2, the angle between the first inclined part and the first vertical part is α1, the angle between the second inclined part and the second vertical part is α2, α1>α2, when the support bar is located at the lower stop point, the top of the second inclined part is in contact with the lower side of the first inclined part, and an anti-sticking gap is formed between the top of the first inclined part and the upper side of the second inclined part.

3. The laser cutting equipment for producing electricity metering boxes according to claim 1, characterized in that, A first reinforcing part is provided between the first supporting part and the first inclined part, and a second reinforcing part is provided between the second supporting part and the second inclined part. The upper end of the first reinforcing part is fixedly connected to the right side wall of the first supporting part, and the lower end is fixedly connected to the upper side of the first inclined part. The upper end of the second reinforcing part is fixedly connected to the left side wall of the second supporting part, and the lower end is fixedly connected to the upper side of the second inclined part.

4. The laser cutting equipment for producing electricity metering boxes according to claim 1, characterized in that, A ceramic layer is provided on the outer wall of the inclined part away from the vertical part, the ceramic layer having a thickness of 0.5 to 1.5 mm, and the end of the ceramic layer away from the vertical part having a rounded corner.

5. A laser cutting device for producing electricity metering boxes according to claim 1, characterized in that, The support bar includes an installation part and a limiting part. The installation part is hinged to the rocker arm. The limiting part is disposed on the installation part. The lower end face of the limiting part and the upper end face of the installation part are provided with multiple equally spaced installation grooves. The installation grooves are hemispherical. A ball is rotatably connected in the installation groove. The installation grooves on the limiting part all penetrate the upper end face of the limiting part, and the ball extends to the upper side of the limiting part.

6. The laser cutting equipment for producing electricity metering boxes according to claim 5, characterized in that, Both sides of the upper end face of the limiting part are provided with chamfers, and the chamfers are surface hardened to 58-62 HRC, and the surface roughness is less than Ra1.

6.

7. A laser cutting device for producing electricity metering boxes according to claim 1, characterized in that, The cross-section of the support plate is crescent-shaped, and multiple support plates are inclinedly arranged in the mounting frame.

Images