A laser cutting device for steel plates used in the production of enamel bathtubs.

Abstract

This invention relates to the field of laser cutting technology, and discloses a laser cutting device for steel plates used in the production of enamel bathtubs. The device includes a nail bed and a laser cutting body. Multiple stop bars are fixedly connected to one side of the nail bed along its length. Two parallel lifting and conveying mechanisms are installed on the nail bed. Each lifting and conveying mechanism includes a support platform and lifting components at both ends of the support platform, as well as positioning components connected to the lifting components. The lifting components drive the support platform to rotate and rise. After the support platform lifts the steel plate, it moves the steel plate laterally until it abuts against the stop bars. Then, a sliding plate slides along the support platform to adjust the steel plate longitudinally. Simultaneously, the sliding plate elastically abuts against the steel plate, achieving rapid and precise positioning of the steel plate, improving the positioning efficiency and accuracy, and providing strong assurance for the quality of the cutting production.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, and in particular to a laser cutting device for steel plates used in the production of steel plate enamel bathtubs. Background Technology

[0002] Enameled steel sheets can be used to make bathtubs. They are wear-resistant, pressure-resistant, and heat-resistant. After being enamel-treated, the surface is both aesthetically pleasing and easy to clean. Bathtubs are made from a single piece of specialized steel sheet. Before pressing, irregularly shaped structures such as curved edges, drain holes, and overflow outlets need to be cut using laser cutting equipment.

[0003] Precise positioning is crucial in laser cutting, ensuring the accurate alignment of the cutting path with the material position and preventing deviations that could lead to product defects. Currently, the main method for positioning steel plates involves using a bed of nails with side rails and clamps. For example, patent CN117260018A discloses an automatic slag removal laser cutting machine for steel plates. By attaching the rear end of the steel plate to the rear wall inside the positioning frame and the left end to the left wall inside the frame, the steel plate can be positioned. Then, a screw is used to move the clamping plate backward, thereby clamping the steel plate and restricting its installation. This effectively reduces the probability of misalignment during operation and ensures the quality of the steel plate cutting.

[0004] However, existing technologies still have the following drawbacks: In the mass production process, manually aligning the edges by workers can easily introduce human error. For example, if the steel plate is not placed tightly against the edge, it will cause positioning deviation. Moreover, each positioning operation requires manual operation, which is time-consuming and affects the overall production rhythm. In addition, the enamel steel plates used for bathtubs are relatively thin, and if the clamping force is not properly controlled, the plate is very easy to bend, thereby reducing the cutting quality. Summary of the Invention

[0005] Given the problems of poor accuracy, low efficiency, and difficulty in controlling clamping force in existing technologies for manually positioning steel plates, a laser cutting device for steel plates based on the production of steel plate enamel bathtubs is proposed.

[0006] Its purpose is to lift and suspend the steel plate placed on the nail bed by the lifting and conveying mechanism, adjust the horizontal and vertical positioning of the steel plate, and then lower it vertically back to the nail bed, thus completing the automated and precise positioning adjustment of the steel plate.

[0007] The technical solution of the present invention is a steel plate laser cutting equipment based on the production of steel plate enamel bathtubs, including a nail bed and a laser cutting body. Multiple stop bars are fixedly connected to one side of the nail bed along the length direction. Two parallel lifting and conveying mechanisms are installed on the nail bed. The lifting and conveying mechanism includes a support platform and lifting components disposed at both ends of the support platform, and also includes a positioning component connected to the lifting components.

[0008] The lifting assembly includes a base fixedly connected to the inner wall of the nail bed, a fixed cylinder fixedly connected to the base, a movable ring movably sleeved on the outer wall of the fixed cylinder, a sleeve connected to the movable ring, the sleeve movably connected to the support platform, and an electric push rod connected between the sleeve and the base, and a guide rod elastically connected to the movable ring, and a right-angled trapezoidal groove slidably engaged with the guide rod on the fixed cylinder;

[0009] The positioning component includes a sliding plate sleeved on a support platform, the sliding plate being elastically connected to an adjacent sleeve;

[0010] The electric push rod extends, the movable ring rotates and rises on the fixed cylinder, the support platform drives the steel plate to rise and detach from the nail bed, and drives the steel plate to abut against the stop bar, and the slide moves to one side of the steel plate to position and adjust the steel plate.

[0011] Using the above technical solution, the electric push rod extends and drives the sleeve to move. The guide rod slides in the right-angled trapezoidal groove, causing the movable ring to rotate and rise on the outer wall of the fixed cylinder. This causes the support platform to rise and lift the steel plate, and drives the steel plate to move laterally so that one side of it abuts against the stop bar. Then the sleeve drives the sliding plate to move. The sliding plates at both ends of the same support platform move closer to each other, and the steel plate is longitudinally adjusted to complete the rapid and accurate positioning of the steel plate.

[0012] Furthermore, the support platform includes a crossbar, the sleeve is movably sleeved on the outer wall of the crossbar, a support plate is fixedly connected to the top of the crossbar, and multiple ball bearings are rotatably connected to the support plate.

[0013] Using the above technical solution, the height of the top surface of the ball is lower than the height of the nail bed. The sleeve drives the crossbar to rise and move towards the side of the stop bar. When the ball rises, it contacts the bottom surface of the steel plate placed on the nail bed. Then it lifts the ball and moves it towards the side of the stop bar. After the steel plate and the stop bar come into contact, the ball and the steel plate roll and rub against each other, avoiding damage to the enamel layer on the bottom surface of the steel plate.

[0014] Furthermore, two connecting rods are fixedly connected to the outer wall of the movable ring, the other end of the connecting rod is rotatably connected to the sleeve, the guide rod is slidably connected to the movable ring, and one end of the guide rod and the movable ring are elastically connected together by an elastic element.

[0015] An arc-shaped guide block is fixedly connected inside the lower slot of the right-angled trapezoidal groove.

[0016] Using the above technical solution, when the guide rod moves along the inclined surface of the right-angled trapezoidal groove, the movable ring rotates and rises on the outer wall of the fixed cylinder. The movable ring drives the sleeve to move through the connecting rod, thereby driving the support platform to rotate and rise. When the guide rod slides along the horizontal part of the lower side of the right-angled trapezoidal groove, the guide rod itself is displaced by the arc-shaped guide block until it returns to the lower left corner of the right-angled trapezoidal groove, realizing the unidirectional cyclic movement of the guide rod in the right-angled trapezoidal groove.

[0017] Furthermore, both ends of the electric push rod are fixedly connected to ball joints, and the other ends of the two ball joints are respectively connected and fixed to the sleeve and the base.

[0018] By adopting the above technical solution, the multi-directional rotation adjustment of the ball head seat enables the electric push rod to self-adjust during the movement and lifting of the sleeve.

[0019] Furthermore, the sliding plate is movably sleeved on the outer wall of the crossbar, and multiple elastic elements are connected between the sliding plate and the adjacent sleeve.

[0020] The slide plate has a groove, and two positioning blocks are vertically slidably connected in the groove. The positioning blocks are I-shaped and are connected by multiple elastic elements.

[0021] Using the above technical solution, when the sliding plate abuts against the steel plate, the two positioning blocks cooperate to clamp the side of the steel plate. When the support platform descends, the positioning blocks limit the vertical movement within the slide groove, ensuring that the positioned steel plate remains vertically lowered, preventing deviation during descent and improving positioning accuracy.

[0022] Furthermore, anti-slip textures are fixed on the opposite sides of both positioning blocks, and clearance slopes are provided on the opposite sides of both positioning blocks.

[0023] Using the above technical solution, the elastic element three maintains the minimum gap between the two positioning blocks. By setting the clearance slope, the positioning blocks can adaptively adjust and clamp according to the thickness of the steel plate, and the anti-slip texture improves the clamping stability of the steel plate.

[0024] Furthermore, a piston component is provided inside the fixed cylinder. The piston component includes two fixed plates, and a telescopic airbag is connected between the two fixed plates. A connecting piece is fixedly connected to the top of the upper fixed plate, and the connecting piece is connected and fixed to the movable ring.

[0025] The telescopic airbag slides in contact with the inner wall of the fixed cylinder, and the inner wall of the fixed cylinder is provided with multiple air guide grooves.

[0026] Using the above technical solution, when the guide rod moves downward along the right vertical groove of the right trapezoidal groove, the telescopic airbag slides downward along the inner wall of the fixed cylinder and the air in the fixed cylinder is discharged through the air guide groove, so that the descent of the support platform becomes slow due to the resistance. This can slow down the descent of the steel plate and prevent the steel plate from falling directly onto the nail bed and damaging the enamel layer of the steel plate.

[0027] Furthermore, a plurality of connecting seats are fixed to the bottom of the lower fixing plate, and an adjusting rod is hinged inside the connecting seat. The adjusting rod has a V-shaped structure. One end of the adjusting rod is in sliding contact with the lower fixing plate, and the other end is fixedly connected to an anti-slip block. The anti-slip block is in sliding contact with the inner wall of the fixing cylinder.

[0028] Using the above technical solution, the anti-slip block is made of rubber. Under its own weight, the adjusting rod keeps the anti-slip block in slight contact with the inner wall of the fixed cylinder. The telescopic airbag is vertically extended under the gravity of the lower fixed plate and the adjusting rod. At this time, the outer diameter of the fixed plate and the telescopic airbag are smaller than the inner diameter of the fixed cylinder. This ensures that the piston does not contact the inner wall of the fixed cylinder when the support platform rotates and rises, thereby reducing the wear of the piston and the power consumption of the electric push rod. When the support platform descends, the anti-slip block abuts against the inner wall of the fixed cylinder, causing the adjusting rod to rotate and drive the lower fixed plate to compress the telescopic airbag. The telescopic airbag expands in the circumferential direction and abuts against the inner wall of the fixed cylinder, thereby realizing the slow descent of the support platform.

[0029] Furthermore, an arc-shaped strip is fixed to the upper part of the anti-slip block facing the inner wall of the fixed cylinder, and a contact arc surface is fixed to the lower part of the anti-slip block facing the inner wall of the fixed cylinder.

[0030] Using the above technical solution, the outer diameter of the arc-shaped strip and the outer diameter of the contact arc surface are both adapted to the inner diameter of the fixed cylinder. Under the action of the self-weight of the adjusting rod, the arc-shaped strip maintains slight contact with the inner wall of the fixed cylinder. When the piston descends, the arc-shaped strip is affected by the inner wall of the fixed cylinder, causing the adjusting rod to rotate. Subsequently, the contact arc surface contacts the inner wall of the fixed cylinder. The contact arc surface increases the friction with the inner wall of the fixed cylinder, while preventing the adjusting rod from continuing to rotate. This allows the adjusting rod to achieve a fixed angle of directional rotation, so that the telescopic airbag remains stable after expansion, and the piston descends at a uniform speed and stably along the fixed cylinder.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. The lifting component drives the support platform to rotate and rise. After the support platform lifts the steel plate, it moves the steel plate laterally until it abuts against the stop bar. Then, the sliding plate slides along the support platform to adjust the steel plate longitudinally. At the same time, the sliding plate and the steel plate make elastic contact, realizing the rapid and accurate positioning of the steel plate, improving the positioning efficiency and accuracy of the steel plate, and providing a strong guarantee for the quality of cutting production.

[0033] 2. When the steel plate is positioned and lowered, the positioning block is vertically slidable by the slide groove, guiding the steel plate to descend vertically and fall smoothly back onto the nail bed, effectively avoiding displacement and further improving the positioning and adjustment accuracy. At the same time, this design firmly confines the steel plate to the nail bed, preventing it from moving horizontally, thereby eliminating the cutting deviation problem caused by the swaying of the steel plate during cutting.

[0034] 3. By working in coordination with the inner wall of the fixed cylinder, the telescopic airbag can flexibly change its shape during the lifting and lowering process. When rising, the telescopic airbag extends vertically and does not contact the inner wall of the fixed cylinder, reducing the wear of piston parts and the power consumption of electric push rod. When descending, the telescopic airbag expands in the circumferential direction and fits against the inner wall of the fixed cylinder, helping the support platform to drive the steel plate to descend slowly and preventing damage to the enamel layer of the steel plate. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the lifting and conveying mechanism of the present invention;

[0037] Figure 3 This is a schematic diagram of the support platform structure of the present invention;

[0038] Figure 4 This is a schematic diagram of the lifting component structure of the present invention;

[0039] Figure 5 This is a schematic diagram showing the disassembled structure of the movable ring and fixed cylinder of the present invention;

[0040] Figure 6 This is a schematic diagram of the fixed cylinder and arc-shaped guide block structure of the present invention;

[0041] Figure 7 This is a schematic diagram of the positioning component structure of the present invention;

[0042] Figure 8 This is a schematic diagram of the positioning block structure of the present invention;

[0043] Figure 9 This is a schematic diagram of the piston component structure of the present invention;

[0044] Figure 10 This is a schematic diagram of the adjusting rod and connecting seat structure of the present invention;

[0045] Figure 11 This is a schematic diagram of the anti-slip block structure of the present invention.

[0046] In the picture:

[0047] 1. Nail bed; 2. Laser cutting body; 3. Stop bar; 4. Support platform; 41. Crossbar; 42. Support plate; 43. Ball bearing; 5. Lifting assembly; 51. Base; 52. Fixed cylinder; 53. Movable ring; 54. Sleeve; 55. Guide rod; 56. Right-angle trapezoidal groove; 57. Arc-shaped guide block; 58. Connecting rod; 59. Air guide groove; 6. Positioning assembly; 61. Slide plate; 62. Slide groove; 63. Positioning block; 64. Anti-slip texture; 65. Leaving slope; 7. Piston; 71. Fixed plate; 72. Telescopic airbag; 73. Connector; 8. Electric push rod; 9. Ball head seat; 10. Connecting seat; 11. Adjusting rod; 12. Anti-slip block; 121. Arc strip; 122. Contact arc surface. Detailed Implementation

[0048] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0049] Example 1, referring to Figures 1-7 This invention provides a first embodiment of a steel plate laser cutting device for producing steel plate enamel bathtubs. The device includes a nail bed 1 and a laser cutting body 2. Multiple stop bars 3 are fixedly connected to one side of the nail bed 1 along its length. Two parallel lifting and conveying mechanisms are installed on the nail bed 1. Each lifting and conveying mechanism includes a support platform 4 and lifting components 5 located at both ends of the support platform 4. It also includes a positioning component 6 connected to the lifting component 5. The lifting component 5 includes a base 51 fixedly connected to the inner wall of the nail bed 1. A fixed cylinder 52 is fixedly connected to the base 51. A movable ring 53 is movably sleeved on the outer wall of the fixed cylinder 52. A sleeve 54 is connected to the support platform 4, and an electric push rod 8 is connected between the sleeve 54 and the base 51. A guide rod 55 is elastically connected to the movable ring 53. A right-angled trapezoidal groove 56 is opened on the fixed cylinder 52 to slide with the guide rod 55. The positioning component 6 includes a sliding plate 61 sleeved on the support platform 4. The sliding plate 61 is elastically connected to the adjacent sleeve 54. When the electric push rod 8 extends, the movable ring 53 rotates and rises on the fixed cylinder 52. The support platform 4 drives the steel plate to rise and disengage from the nail bed 1, and drives the steel plate to abut against the stop rod 3. The sliding plate 61 moves to one side of the steel plate to position and adjust the steel plate.

[0050] Specifically, the electric push rod 8 extends and drives the sleeve 54 to move. The guide rod 55 slides in the right-angled trapezoidal groove 56, causing the movable ring 53 to rotate and rise on the outer wall of the fixed cylinder 52. This causes the support platform 4 to rise and lift the steel plate, and drives the steel plate to move laterally so that one side of it abuts against the stop rod 3. Then, the sleeve 54 drives the slide plate 61 to move. The slide plates 61 at both ends of the same support platform 4 move closer to each other, and the steel plate is longitudinally adjusted to complete the rapid and accurate positioning of the steel plate.

[0051] Understandably, all electric actuators 8 are driven by the same control system to achieve synchronous extension and retraction control.

[0052] Reference Figure 3 and Figure 4 The support platform 4 includes a crossbar 41, a sleeve 54 is movably sleeved on the outer wall of the crossbar 41, a support plate 42 is fixedly connected to the top of the crossbar 41, and multiple balls 43 are rolled on the support plate 42.

[0053] Specifically, the top surface of the ball bearing 43 is lower than the height of the nail bed 1. The sleeve 54 drives the crossbar 41 to rise and move towards the side of the stop bar 3. When the ball bearing 43 rises, it contacts the bottom surface of the steel plate placed on the nail bed 1, and then lifts it up and moves it towards the side of the stop bar 3. After the steel plate comes into contact with the stop bar 3, the ball bearing 43 rolls and rubs against the steel plate to avoid damage to the enamel layer on the bottom surface of the steel plate.

[0054] Reference Figure 4 and Figure 5 Two connecting rods 58 are fixedly connected to the outer wall of the movable ring 53. The other end of the connecting rod 58 is rotatably connected to the sleeve 54. The guide rod 55 is slidably connected to the movable ring 53. One end of the guide rod 55 and the movable ring 53 are elastically connected together by an elastic element. An arc-shaped guide block 57 is fixedly connected in the lower groove of the right-angled trapezoidal groove 56.

[0055] Specifically, when the guide rod 55 moves along the inclined surface of the right-angled trapezoidal groove 56, the movable ring 53 rotates and rises on the outer wall of the fixed cylinder 52. The movable ring 53 drives the sleeve 54 to move through the connecting rod 58, thereby driving the support platform 4 to rotate and rise. When the guide rod 55 slides along the lower horizontal part of the right-angled trapezoidal groove 56, the arc-shaped guide block 57 causes the guide rod 55 to move until it returns to the lower left corner of the right-angled trapezoidal groove 56, realizing the unidirectional cyclic movement of the guide rod 55 in the right-angled trapezoidal groove 56.

[0056] Among them, reference Figure 6 The arc-shaped guide block 57 is located in the lower groove of the right-angled trapezoidal groove 56. The left side of the arc-shaped guide block 57 has an inclined surface at the same angle as the right-angled trapezoidal groove 56, and the right side of the arc-shaped guide block 57 has an inclined transition, so that its right end can smoothly connect with the groove of the right-angled trapezoidal groove 56, which facilitates the smooth sliding of the guide rod 55 in the right-angled trapezoidal groove 56.

[0057] Reference Figure 4 Both ends of the electric push rod 8 are fixedly connected to ball head seats 9, and the other ends of the two ball head seats 9 are respectively connected and fixed to the sleeve 54 and the base 51.

[0058] Specifically, by utilizing the multi-directional rotation adjustment of the ball head seat 9, the electric push rod 8 can adaptively adjust itself when the sleeve 54 moves and rises.

[0059] It is understandable that the ball head seat 9 consists of a ball head rod and a ball head limiting seat. The outer diameter of the ball head rod is smaller than the movable cavity of the ball head limiting seat. There is a certain amount of play between the ball head rod and the ball head limiting seat. Therefore, when the guide rod 55 moves downward along the vertical groove on the right side of the right-angled trapezoidal groove 56, the electric push rod 8 does not need to extend or retract again. This amount of play allows the guide rod 55 to make vertical displacement.

[0060] In practical work, refer to Figures 2-6 When the guide rod 55 slides upward along the left inclined surface of the right-angled trapezoidal groove 56, the movable ring 53 drives the support platform 4 to rotate and rise, making the support platform 4 higher than the placement surface of the nail bed 1. The support platform 4 lifts the steel plate and moves it to abut against the stop rod 3. When the guide rod 55 moves horizontally along the upper side of the right-angled trapezoidal groove 56, the support platform 4 stops rising but continues to move horizontally. At the same time, the sleeve 54 drives the sliding plate 61 to move closer to the steel plate and adjust the longitudinal positioning of the steel plate. When the guide rod 55 moves downward along the right vertical groove of the right-angled trapezoidal groove 56, the support platform 4 descends, causing the positioned steel plate to descend back onto the nail bed 1. When the guide rod 55 moves horizontally along the lower side of the right-angled trapezoidal groove 56, the support platform 4 resets, and the sliding plate 61 slides in the opposite direction, canceling the contact with the steel plate.

[0061] Among them, reference Figure 7 Since the steel plate can roll on the support platform 4, after the slide plate 61 contacts the side of the steel plate, the sleeve 54 continues to move to compress the elastic element 3. The slide plate 61 and the steel plate are in elastic contact. The maximum elastic force of the elastic element 3 is less than the minimum deformation pressure of the steel plate, thereby avoiding excessive contact force that could cause the steel plate to be squeezed and deformed.

[0062] Example 2, refer to Figure 7 and Figure 8 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: the slide plate 61 is movably sleeved on the outer wall of the crossbar 41, and the slide plate 61 and the adjacent sleeve 54 are connected by a plurality of elastic elements 2; a sliding groove 62 is provided in the slide plate 61, and two positioning blocks 63 are vertically slidably connected in the sliding groove 62. The positioning blocks 63 have an I-shaped structure, and the two positioning blocks 63 are connected by a plurality of elastic elements 3.

[0063] Specifically, when the slide plate 61 abuts against the steel plate, the two positioning blocks 63 cooperate to clamp the side of the steel plate. When the support platform 4 descends, the positioning blocks 63 are vertically limited in the slide groove 62, so that the positioned steel plate remains vertically descending, avoiding deviation during descent and improving positioning accuracy.

[0064] Among them, elastic component one, elastic component two, and elastic component three all use springs.

[0065] Reference Figure 8The two positioning blocks 63 are each provided with anti-slip texture 64 on their opposite sides, and the two positioning blocks 63 are each provided with a clearance slope 65 on their opposite sides.

[0066] Specifically, the elastic element three maintains a minimum gap between the two positioning blocks 63. The clearance slope 65 allows the positioning blocks 63 to adaptively adjust and clamp according to the thickness of the steel plate, and the anti-slip texture 64 enhances the clamping stability of the steel plate. The remaining structure is the same as in Embodiment 1.

[0067] Example 3, referring to Figure 5 and Figure 9 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that: a piston component 7 is provided inside the fixed cylinder 52. The piston component 7 includes two fixed plates 71. A telescopic airbag 72 is connected between the two fixed plates 71. A connector 73 is fixedly connected to the top of the upper fixed plate 71. The connector 73 is connected and fixed to the movable ring 53. The telescopic airbag 72 slides in contact with the inner wall of the fixed cylinder 52. A plurality of air guide grooves 59 are opened on the inner wall of the fixed cylinder 52.

[0068] Specifically, when the guide rod 55 moves downward along the vertical opening on the right side of the right-angled trapezoidal groove 56, the telescopic airbag 72 slides downward along the inner wall of the fixed cylinder 52, and the air in the fixed cylinder 52 is discharged through the air guide groove 59, so that the descent of the support platform 4 becomes slower due to the resistance, thereby decelerating the descent of the steel plate and preventing the steel plate from falling directly onto the nail bed 1 and damaging the enamel layer of the steel plate.

[0069] Reference Figure 9 and Figure 10 Multiple connecting seats 10 are fixed at the bottom of the lower fixing plate 71. An adjusting rod 11 is hinged inside the connecting seat 10. The adjusting rod 11 has a V-shaped structure. One end of the adjusting rod 11 slides in contact with the lower fixing plate 71, and the other end is fixedly connected to an anti-sliding block 12. The anti-sliding block 12 slides in contact with the inner wall of the fixing cylinder 52.

[0070] Specifically, the anti-slip block 12 is made of rubber. Under its own weight, the adjusting rod 11 keeps the anti-slip block 12 in slight contact with the inner wall of the fixed cylinder 52. The telescopic airbag 72 is vertically extended under the gravity of the lower fixed plate 71 and the adjusting rod 11. At this time, the outer diameter of the fixed plate 71 and the telescopic airbag 72 are smaller than the inner diameter of the fixed cylinder 52. This ensures that when the support platform 4 rotates and rises, the piston 7 does not contact the inner wall of the fixed cylinder 52, thereby reducing the wear of the piston 7 and the power consumption of the electric push rod 8. When the support platform 4 descends, the anti-slip block 12 abuts against the inner wall of the fixed cylinder 52, causing the adjusting rod 11 to rotate and drive the lower fixed plate 71 to compress the telescopic airbag 72. The telescopic airbag 72 expands in the circumferential direction and abuts against the inner wall of the fixed cylinder 52, thereby realizing the slow descent of the support platform 4.

[0071] Reference Figure 11 An arc-shaped strip 121 is fixedly provided on the upper part of the side of the anti-slip block 12 facing the inner wall of the fixed cylinder 52, and a contact arc surface 122 is fixedly provided on the lower part of the side of the anti-slip block 12 facing the inner wall of the fixed cylinder 52.

[0072] Specifically, the outer diameter of the arc-shaped strip 121 and the outer diameter of the contact arc surface 122 are both adapted to the inner diameter of the fixed cylinder 52. Under the action of its own weight, the arc-shaped strip 121 maintains slight contact with the inner wall of the fixed cylinder 52. When the piston 7 descends, the arc-shaped strip 121 is affected by the inner wall of the fixed cylinder 52, causing the adjusting rod 11 to rotate. Subsequently, the contact arc surface 122 contacts the inner wall of the fixed cylinder 52. The contact arc surface 122 increases the friction with the inner wall of the fixed cylinder 52, while preventing the adjusting rod 11 from continuing to rotate. This allows the adjusting rod 11 to achieve a fixed angle of directional rotation, ensuring that the telescopic airbag 72 remains stable after expansion, and enabling the piston 7 to descend steadily and uniformly along the fixed cylinder 52. The remaining structure is the same as that in Embodiment 2.

[0073] Based on embodiments 1-3, the working principle of this invention is as follows: After the steel plate is placed on the bed of the nail bed 1, the electric push rod 8 extends to make the guide rod 55 slide upward along the inclined surface of the right-angled trapezoidal groove 56, so that the movable ring 53 rotates and rises on the outer wall of the fixed cylinder 52. The support platform 4 lifts the steel plate and moves the steel plate to abut against the stop rod 3. Then, when the guide rod 55 moves horizontally along the upper side of the right-angled trapezoidal groove 56, the sleeve 54 drives the sliding plate 61 to one side of the steel plate, and the steel plate is longitudinally positioned and adjusted. After the positioning adjustment is completed, the guide rod 55 moves downward along the right vertical groove of the right-angled trapezoidal groove 56, and the support platform 4 descends, so that the positioned steel plate falls back to the nail bed 1. Then, the laser cutting body 2 cuts the steel plate.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A laser cutting device for steel plates used in the production of enamel bathtubs, comprising a nail bed (1) and a laser cutting body (2), characterized in that: The nail bed (1) has multiple stop bars (3) fixedly connected to one side along its length. The nail bed (1) is equipped with two parallel lifting and conveying mechanisms. The lifting and conveying mechanism includes a support platform (4) and lifting components (5) disposed at both ends of the support platform (4). It also includes a positioning component (6) connected to the lifting components (5). The lifting assembly (5) includes a base (51) fixedly connected to the inner wall of the nail bed (1), a fixed cylinder (52) fixedly connected to the base (51), a movable ring (53) movably sleeved on the outer wall of the fixed cylinder (52), a sleeve (54) connected to the movable ring (53), the sleeve (54) movably connected to the support platform (4), and an electric push rod (8) connected between the sleeve (54) and the base (51), and a guide rod (55) elastically connected to the movable ring (53), and a right-angled trapezoidal groove (56) slidably engaged with the guide rod (55) on the fixed cylinder (52); The positioning component (6) includes a sliding plate (61) sleeved on the support platform (4), and the sliding plate (61) is elastically connected to the adjacent sleeve (54); The electric push rod (8) extends, the movable ring (53) rotates and rises on the fixed cylinder (52), the support platform (4) drives the steel plate to rise and disengage from the nail bed (1), and drives the steel plate to abut against the stop bar (3), and the sliding plate (61) moves to one side of the steel plate to position and adjust the steel plate.

2. The steel plate laser cutting equipment for producing steel plate enamel bathtubs according to claim 1, characterized in that: The support platform (4) includes a crossbar (41), the sleeve (54) is movably sleeved on the outer wall of the crossbar (41), the top of the crossbar (41) is fixedly connected to a support plate (42), and multiple balls (43) are rolled on the support plate (42).

3. The laser cutting equipment for producing steel plate enameled bathtubs according to claim 1, characterized in that: Two connecting rods (58) are fixedly connected to the outer wall of the movable ring (53). The other end of the connecting rod (58) is rotatably connected to the sleeve (54). The guide rod (55) is slidably connected to the movable ring (53). One end of the guide rod (55) and the movable ring (53) are elastically connected together by an elastic element. An arc-shaped guide block (57) is fixedly connected inside the lower slot of the right-angled trapezoidal groove (56).

4. The steel plate laser cutting equipment for producing steel plate enamel bathtubs according to claim 1, characterized in that: Both ends of the electric push rod (8) are fixedly connected to ball head seats (9), and the other ends of the two ball head seats (9) are respectively connected and fixed to the sleeve (54) and the base (51).

5. The laser cutting equipment for producing steel plate enameled bathtubs according to claim 1, characterized in that: The sliding plate (61) is movably sleeved on the outer wall of the crossbar (41), and the sliding plate (61) and the adjacent sleeve (54) are connected by a plurality of elastic elements. The slide plate (61) has a groove (62) inside, and two positioning blocks (63) are vertically slidably connected inside the groove (62). The positioning blocks (63) are in the shape of an I-beam, and multiple elastic elements are connected between the two positioning blocks (63).

6. The steel plate laser cutting equipment for producing steel plate enamel bathtubs according to claim 5, characterized in that: Anti-slip texture (64) is fixed on one side of each of the two positioning blocks (63), and a clearance slope (65) is provided on one side of each of the two positioning blocks (63).

7. The laser cutting equipment for producing steel plate enamel bathtubs according to claim 1, characterized in that: The fixed cylinder (52) is provided with a piston component (7), which includes two fixed plates (71). The two fixed plates (71) are connected together by a telescopic airbag (72). A connector (73) is fixedly connected to the top of the upper fixed plate (71), and the connector (73) is connected and fixed to the movable ring (53). The telescopic airbag (72) slides in contact with the inner wall of the fixed cylinder (52), and the inner wall of the fixed cylinder (52) is provided with multiple air guide grooves (59).

8. The steel plate laser cutting equipment for producing steel plate enamel bathtubs according to claim 7, characterized in that: The bottom of the lower fixing plate (71) is fixed with multiple connecting seats (10). An adjusting rod (11) is hinged inside the connecting seat (10). The adjusting rod (11) has a V-shaped structure. One end of the adjusting rod (11) is in sliding contact with the lower fixing plate (71), and the other end is fixedly connected to an anti-slip block (12). The anti-slip block (12) is in sliding contact with the inner wall of the fixing cylinder (52).

9. The laser cutting equipment for producing steel plate enamel bathtubs according to claim 8, characterized in that: An arc-shaped strip (121) is fixedly provided on the upper part of the side of the anti-slip block (12) facing the inner wall of the fixed cylinder (52), and a contact arc surface (122) is fixedly provided on the lower part of the side of the anti-slip block (12) facing the inner wall of the fixed cylinder (52).

Images