A metal sheet feeding device applied to a laser cutting device

Abstract

The application discloses a metal sheet loading device applied to a laser cutting equipment, which comprises a moving conveying assembly, a moving sliding seat arranged on the moving conveying assembly, and a grabbing lifting assembly fixedly connected to the moving sliding seat; the grabbing lifting assembly comprises a rectangular fixed arm and a rectangular moving arm, the bottom end of the rectangular moving arm is fixedly connected with an adjusting mechanism; electric suction cups are fixedly connected to the four corners of the adjusting mechanism, and an auxiliary anti-sag bracket assembly is further fixedly connected to the adjusting mechanism; the application designs an adjustable double-belt magnetic-suction anti-sag bracket structure, the distribution span of the electric suction cups can be changed through the adjusting mechanism, different length-width size plates can be adapted, the middle region of the metal sheet is subjected to face-contact type supporting through the auxiliary anti-sag bracket assembly, the flatness of the metal sheet is constrained, and the quick adaptation and anti-sag treatment of different width plates can be realized.

Description

Technical Field

[0001] This application relates to the field of sheet metal processing automation equipment technology, and in particular to a sheet metal loading device for use in laser cutting equipment. Background Technology

[0002] Laser cutting technology has been widely used in modern manufacturing due to its advantages of high precision, high speed, and non-contact processing. However, laser cutting places extremely stringent requirements on the positioning accuracy and flatness of the sheet metal, especially the distance between the cutting head nozzle and the sheet surface. Even slight deformation or vibration of the sheet metal can easily lead to nozzle collision damage or a decrease in cutting accuracy.

[0003] In existing automated laser cutting production lines, the loading of thin metal sheets typically employs vacuum suction cup robotic arms or gantry-type loading machines. These devices rely on multiple electric vacuum suction cups arranged on a crossbeam to adhere and fix the sheet surface, and then a moving module transfers the sheet from the storage rack to the cutting worktable.

[0004] Although this technical solution has achieved automated feeding to some extent, it is difficult to suppress sagging deformation in the middle of the sheet when working with large-sized thin metal sheets.

[0005] For large-sized thin plates, even if the suction force of the suction cups is increased or the number of suction cups is increased, the plate segments located between the suction cup support points will experience significant deflection due to bending stress during the suspended transfer stage after the plate is detached from the material pile because of the uneven distribution of the plate's own gravity.

[0006] While existing technologies include solutions that adjust the suction cup spacing to accommodate different board lengths, these are essentially discrete point supports and cannot eliminate local sagging between adjacent suction cup segments. Other solutions attempt to add independent rigid support mechanisms, but these mechanisms are typically fixed in position, only suitable for single-size boards, and prone to motion interference during large board transport, failing to fundamentally solve the problem of continuous surface support.

[0007] In other words, existing technologies have the following technical problems: ordinary metal sheet loading mechanisms are prone to gravitational bending deformation. Therefore, to address the above problems, a metal sheet loading device for laser cutting equipment is proposed. Summary of the Invention

[0008] This application provides a metal sheet loading device for laser cutting equipment to solve the problem that ordinary metal sheet loading mechanisms in the prior art are prone to gravity bending deformation.

[0009] According to one aspect of this application, a sheet metal loading device for use in laser cutting equipment is provided, comprising: A mobile conveyor assembly is provided with a mobile slide, and a gripping and lifting assembly is fixedly connected to the mobile slide. The gripping and lifting assembly includes a rectangular fixed arm and a rectangular movable arm, with an adjustment mechanism fixedly connected to the bottom end of the rectangular movable arm; Electric suction cups are fixedly connected to all four corners of the adjustment mechanism; An auxiliary anti-sagging bracket assembly is also fixedly connected to the adjustment mechanism. The auxiliary anti-sagging bracket assembly includes an adsorption belt and a take-up roller. The adsorption belt is used to adsorb and adhere to the upper surface of the metal sheet to provide auxiliary support force.

[0010] Furthermore, the adjustment mechanism includes a length fixed arm, a length adjusting arm, a width fixed arm, and a width adjusting arm. The length fixed arm has an internal cavity, and length adjusting arms are slidably connected to both sides of the internal cavity of the length fixed arm. Both length adjusting arms have an internal cavity, and a length positioning block is fixedly connected to the internal cavity of the length adjusting arm; A length adjusting screw is rotatably connected inside the cavity of the length fixing arm. The length adjusting screw is a double-helix reverse threaded rod, and its two ends are threaded into two length positioning blocks respectively.

[0011] Furthermore, a first adjusting motor is fixedly connected to the outer wall of the length-fixed arm, and the first adjusting motor is connected to the length adjusting screw for power transmission.

[0012] Furthermore, a width fixing arm is fixedly connected to one end of each of the two length adjusting arms. The width fixing arm has an inner cavity, and width adjusting arms are slidably connected to both sides of the inner cavity of the width fixing arm. The width adjustment arm has an internal cavity, and a width positioning block is fixedly connected to each internal cavity of the width adjustment arm. A width positioning screw is rotatably connected inside the cavity of the width fixing arm. The width positioning screw is a double-helix reverse threaded rod, and its two ends are threaded into two width positioning blocks respectively.

[0013] Furthermore, a second adjusting motor is fixedly installed on the outer wall of the width fixing arm, and the end of the output shaft of the second adjusting motor is poweredly connected to the width positioning screw.

[0014] Furthermore, the auxiliary anti-sagging bracket assembly also includes a connecting bracket and a limiting bracket; Take-up rollers are provided on both sides of the adjustment mechanism; An adsorption belt is connected between the two take-up rollers. A winding drive motor is also fixedly connected to one side of the limiting bracket, and the end of the output shaft of the winding drive motor is coaxially connected to the winding roller.

[0015] Furthermore, the adsorption belt includes a steel belt and flexible magnetic sheets, with several flexible magnetic sheets fixedly disposed on the upper surface of the steel belt.

[0016] Furthermore, a first spline rod is provided between the two take-up rollers, one end of which is fixedly connected to the shaft center of one of the take-up rollers, and the other end of which passes through the other take-up roller and slides with it.

[0017] Furthermore, the auxiliary anti-sagging bracket assembly is also equipped with an auxiliary cleaning structure, which includes a connecting frame, a cleaning roller, and an elastic support. The elastic support includes a fixed sleeve and an adjusting rod. The fixed sleeve is fixedly installed on the outer wall of the take-up roller. The adjusting rod is slidably connected in the inner cavity of the fixed sleeve. One end of the connecting spring is fixedly connected to the upper end of the adjusting rod. The other end of the connecting spring is fixedly connected to the upper wall of the inner cavity of the fixed sleeve. The connecting spring is in a stretched state.

[0018] Furthermore, a connecting frame is fixedly connected to the bottom end of the adjusting rod, and a cleaning roller is rotatably connected to the connecting frame; The cleaning roller includes a rotating roller and cleaning blades. The rotating roller is rotatably connected to the connecting frame. Several cleaning blades are fixedly installed on the arc-shaped wall of the rotating roller. The cleaning blades are used to contact the bottom surface of the adsorption belt.

[0019] To address the technical problem in the prior art where ordinary vacuum suction cups easily sag and deform in the middle of large-sized thin metal sheets due to lack of support when adsorbing and transferring them, this application designs an adjustable double-belt magnetic anti-sag bracket structure. By adjusting the distribution span of the electric suction cups, it can adapt to plates of different lengths and widths. Thus, the auxiliary anti-sag bracket assembly provides surface-contact support for the middle area of ​​the thin metal sheet, constraining its flatness. Furthermore, this application, through the overall technical solution formed by the adjustment mechanism, auxiliary anti-sag bracket assembly, and auxiliary cleaning structure, achieves rapid adaptation and anti-sag treatment for plates of different sizes. On the other hand, the auxiliary cleaning structure cleans the surface of the suction belt, making it particularly suitable for laser cutting loading operations where a certain level of surface cleanliness is required. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application; Figure 2 This is a front view structural diagram of one embodiment of this application; Figure 3 This is a schematic diagram of the internal structure of a gripping and lifting assembly according to an embodiment of this application; Figure 4 This is a schematic diagram of the structure of an auxiliary anti-sagging bracket assembly according to an embodiment of this application; Figure 5 This is a schematic diagram of the internal structure of the adjustment mechanism according to one embodiment of this application; Figure 6 This is a schematic diagram of the structure of the adsorption strip according to one embodiment of this application; Figure 7 This is a schematic diagram of the auxiliary cleaning structure according to one embodiment of this application; Figure 8 This is a schematic diagram of the internal side structure of an auxiliary cleaning structure according to an embodiment of this application; Figure 9 This is one embodiment of the present application. Figure 7 A magnified structural diagram of point A; Figure 10 This is a schematic diagram of the structure of a cleaning roller according to an embodiment of this application; Figure 11 This is a schematic diagram of the structure of a take-up roller according to an embodiment of this application.

[0022] In the picture: 1. Mobile conveying assembly; 101. Support frame; 102. Fixed guide rod; 103. Mobile slide; 104. First drive screw; 105. First drive motor; 2. Grasping and lifting assembly; 201. Rectangular fixed arm; 202. Rectangular moving arm; 203. Threaded sleeve; 204. Second drive screw; 205. Second drive motor; 3. Adjustment mechanism; 301. Length fixing arm; 302. Length adjusting arm; 303. Width fixing arm; 304. Width adjusting arm; 305. Length positioning block; 306. Length adjusting screw; 307. Width positioning block; 308. Width positioning screw; 309. First adjusting motor; 310. Second adjusting motor; 4. Auxiliary anti-sagging bracket assembly; 401. Connecting bracket; 402. Limiting bracket; 403. Take-up roller; 404. Adsorption belt; 4041. Steel belt; 4042. Flexible magnetic suction sheet; 405. Take-up drive motor; 406. Guide roller; 407. First spline rod; 5. Auxiliary cleaning structure; 501. Connecting frame; 502. Cleaning roller; 5021. Rotating roller; 5022. Cleaning scraper; 5023. Second splined rod; 503. Elastic bracket; 5031. Fixing sleeve; 5032. Adjusting rod; 5033. Connecting spring; 504. Linkage part; 5041. First transmission wheel; 5042. Second transmission wheel; 5043. Transmission belt; 6. Electric suction cup; 7. Thin metal sheets. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0024] Please see Figure 1 and Figure 2 As shown, a metal sheet loading device for use in laser cutting equipment includes: A mobile conveying component 1 is provided with a mobile slide 103, and a gripping and lifting component 2 is fixedly connected to the mobile slide 103. The grasping and lifting assembly 2 includes a rectangular fixed arm 201 and a rectangular movable arm 202, with an adjustment mechanism 3 fixedly connected to the bottom end of the rectangular movable arm 202; Electric suction cups 6 are fixedly connected to the four corners of the adjustment mechanism 3 to form a four-point gripping structure, which is used to cooperate with the mobile conveying component 1 to realize the translation and lifting of the metal sheet 7. An auxiliary anti-sagging bracket assembly 4 is also fixedly connected to the adjustment mechanism 3. The auxiliary anti-sagging bracket assembly 4 includes an adsorption belt 404 and a take-up roller 403. The adsorption belt 404 is used to adhere to the upper surface of the metal sheet 7 to provide auxiliary support force, which plays a role in suppressing the deflection deformation of the metal sheet 7 due to its own weight.

[0025] This application designs an adjustable double-band magnetic anti-sag bracket structure. By adjusting the distribution span of the electric suction cups 6 through the adjustment mechanism 3, it can adapt to plates of different lengths and widths. Thus, the auxiliary anti-sag bracket assembly 4 provides surface-contact support for the central area of ​​the thin metal plate 7, constraining the flatness of the thin metal plate 7. At the same time, this application also achieves rapid adaptation and anti-sag treatment for plates of different sizes through the overall technical solution formed by the adjustment mechanism 3, the auxiliary anti-sag bracket assembly 4, and the auxiliary cleaning structure 5. On the other hand, the auxiliary cleaning structure 5 cleans the surface of the adsorption belt 404, which is particularly suitable for laser cutting loading operations with certain requirements for surface cleanliness.

[0026] In a preferred embodiment of this application, see [reference] Figure 1 and Figure 2 As shown, the mobile conveying assembly 1 includes a support frame 101, a fixed guide rod 102, and a first drive screw 104; Both ends of the fixed guide rod 102 are fixedly connected to support frames 101 to form a stable portal frame structure. A first drive screw 104 is fixedly connected between the two support frames 101. A movable slide block 103 is slidably connected to the fixed guide rod 102. The first drive screw 104 passes through the movable slide block 103 and is threadedly engaged with the movable slide block 103, forming a transmission structure that converts rotational motion into linear motion, which is used to drive the movable slide block 103 to reciprocate along the axial direction of the fixed guide rod 102.

[0027] Furthermore, a first drive motor 105 is fixedly connected to one side wall of the support frame 101, and the end of the output shaft of the first drive motor 105 is fixedly connected to one end of the first drive screw 104 to form a power input end.

[0028] Through the above technical solution, when the first drive motor 105 receives the control signal and starts, it can drive the first drive screw 104 to rotate around its own axis, thereby forcing the movable slide 103, which is threaded to it, to make linear displacement along the fixed guide rod 102, thereby driving the gripping lifting assembly 2 and the adjustment mechanism 3 and the auxiliary anti-sagging bracket assembly 4 below it to move as a whole, thus realizing the function of transferring the metal sheet 7 from the storage area to the laser cutting worktable.

[0029] In a preferred embodiment of this application, see [reference] Figure 2 and Figure 3 As shown, the gripping and lifting assembly 2 also includes a threaded sleeve 203 and a second drive screw 204; The rectangular fixed arm 201 has an internal cavity, and a rectangular movable arm 202 is slidably connected in the internal cavity of the rectangular fixed arm 201 to form a telescopic guide structure to adapt to the operation requirements of different heights. The rectangular movable arm 202 has an internal cavity, and a threaded sleeve 203 is fixedly connected in the internal cavity of the rectangular movable arm 202. A second drive screw 204 is also rotatably connected in the internal cavity of the rectangular fixed arm 201. The second drive screw 204 passes through the threaded sleeve 203 and is threadedly engaged with the threaded sleeve 203. A second drive motor 205 is also fixedly connected to the upper end of the rectangular fixed arm 201. The output shaft end of the second drive motor 205 is fixedly connected to one end of the second drive screw 204, and is used to output torque to drive the second drive screw 204 to rotate.

[0030] Through the above technical solution, when the second drive motor 205 is started, it can drive the second drive screw 204 to rotate. Through the cooperation of the threaded sleeve 203, the rectangular moving arm 202 can slide and extend within the inner cavity of the rectangular fixed arm 201, thereby adjusting the vertical height of the adjustment mechanism 3 and the electric suction cup 6. This enables the height adjustment of the plates to be gripped and placed according to different stacking heights, and achieves precise vertical positioning.

[0031] In one specific embodiment of this application, see [reference]. Figure 4 and Figure 5 As shown, the adjustment mechanism 3 includes a length fixed arm 301, a length adjusting arm 302, a width fixed arm 303, and a width adjusting arm 304; The length-fixing arm 301 has an internal cavity, and length-adjusting arms 302 are slidably connected to both sides of the internal cavity of the length-fixing arm 301 to form a guide structure for synchronous extension and retraction on both sides. Both length adjusting arms 302 have internal cavities, and length positioning blocks 305 are fixedly connected in the internal cavities of the length adjusting arms 302.

[0032] A length adjusting screw 306 is rotatably connected in the inner cavity of the length fixing arm 301. The length adjusting screw 306 is a double helix reverse threaded rod. The two ends of the length adjusting screw 306 are threadedly engaged with two length positioning blocks 305 respectively, which are used to transmit torque and convert it into linear displacement of the length positioning blocks 305, thereby realizing the synchronous movement of the two length adjusting arms 302 towards or away from each other.

[0033] Furthermore, a first adjusting motor 309 is fixedly connected to the outer wall of the length fixing arm 301. The first adjusting motor 309 and the length adjusting screw 306 are connected by a coupling to establish a power transmission connection. Specifically, the output shaft of the first adjusting motor 309 is inserted into the connecting hole at the end of the length adjusting screw 306. By rotating the first adjusting motor 309 in both directions, the length adjusting screw 306 can be driven to rotate, thereby driving the two length adjusting arms 302 to extend and retract synchronously to adapt to the length dimension of the metal sheet 7.

[0034] With the above technical solution, when it is necessary to adjust the gripping span to adapt to metal sheets 7 of different lengths, the first adjusting motor 309 can be started to drive the length adjusting screw 306 to rotate, so that the two length positioning blocks 305 drive the corresponding length adjusting arms 302 to move, thereby driving the width fixing arm 303 and the electric suction cup 6 installed at the end of the length adjusting arm 302 to move, thus realizing the adjustment of the gripping spacing along the length of the sheet.

[0035] As a preferred technical solution, a width fixing arm 303 is fixedly connected to one end of each of the two length adjusting arms 302. The width fixing arm 303 has an inner cavity, and a width adjusting arm 304 is slidably connected to both sides of the inner cavity of the width fixing arm 303.

[0036] The width adjusting arm 304 has an internal cavity, and a width positioning block 307 is fixedly connected to the internal cavity of the width adjusting arm 304.

[0037] A width positioning screw 308 is rotatably connected in the inner cavity of the width fixing arm 303. The width positioning screw 308 is a double-helix reverse threaded rod. The two ends of the width positioning screw 308 are threadedly engaged with two width positioning blocks 307 respectively, which are used to drive the width adjusting arm 304 to extend and retract synchronously, thereby realizing the spacing adjustment along the width direction of the plate.

[0038] Furthermore, a second adjusting motor 310 is fixedly installed on the outer wall of the width fixing arm 303. The output shaft of the second adjusting motor 310 is poweredly connected to the width positioning screw 308 via gear transmission or direct connection through a coupling, thus realizing the transmission of power. Specifically, the second adjusting motor 310 drives the width positioning screw 308 to rotate, causing the two width adjusting arms 304 to extend or retract synchronously to adapt to the width dimension of the metal sheet 7.

[0039] An electric suction cup 6 is fixedly connected to one end of the width adjustment arm 304.

[0040] Through the above technical solution, when the second adjusting motor 310 is started, it can drive the width positioning screw 308 to rotate, thereby driving the width adjusting arm 304 to move, and then driving the electric suction cup 6 fixed at the end of the width adjusting arm 304 to move and adjust, realizing the adaptive adjustment of the width direction of the gripping mechanism, and thus realizing the stable gripping of metal thin plates 7 of different widths.

[0041] In one specific embodiment of this application, see [reference]. Figure 4 As shown, the auxiliary anti-sagging bracket assembly 4 also includes a connecting bracket 401 and a limiting bracket 402.

[0042] Both sides of the adjustment mechanism 3 are provided with take-up rollers 403. The take-up rollers 403 are rotatably connected to the limit bracket 402. One end of the take-up rollers 403 is fixedly connected to the connecting bracket 401. The connecting bracket 401 is fixedly set at one end of the width adjustment arm 304 and is used to support the take-up rollers 403 and the adsorption belt 404 on them.

[0043] An adsorption belt 404 is connected between the two take-up rollers 403 to form a closed-loop belt support structure, which is used to adhere to the upper surface of the metal sheet 7 to suppress its central sagging.

[0044] A winding drive motor 405 is also fixedly connected to one side of the limiting bracket 402. The output shaft end of the winding drive motor 405 is coaxially connected to the winding roller 403 and is used to drive the winding roller 403 to rotate around the axis.

[0045] Through the above technical solution, when the winding drive motor 405 receives the control signal and starts, it can drive the winding roller 403 to rotate, thereby driving the adsorption belt 404 to wind around or release the winding roller 403, thereby adjusting the tension of the adsorption belt 404. By adjusting the forward and reverse rotation of the winding drive motor 405, the adsorption belt 404 can be kept in an appropriate tension state, forming a support surface with a certain rigidity, thereby limiting the vertical displacement of the metal sheet 7 during the transfer process.

[0046] Further, see Figure 6 As shown, the adsorption strip 404 includes a steel strip 4041 and flexible magnetic absorbing sheets 4042. Several flexible magnetic absorbing sheets 4042 are fixedly arranged on the upper surface of the steel strip 4041 to form an area with magnetic adsorption capability. A non-magnetic smooth surface layer is also provided on the other side of the steel strip 4041 to form a non-adsorption contact area for direct contact with the metal sheet 7.

[0047] Through this technical solution, the magnetic force generated by the flexible magnetic absorbing sheet 4042 can adsorb the iron-based metal sheet 7, thereby enhancing the stability of the support. When the adsorption belt 404 is driven by the winding roller 403 to undergo circumferential displacement, the positions of the adsorption area and the non-adsorption area can be switched, so that the non-adsorption area moves above the metal sheet 7 to facilitate the release of the sheet.

[0048] Furthermore, see Figure 4 and Figure 11 As shown, in order to ensure that the two take-up rollers 403 rotate synchronously during the width adjustment process, so as to avoid the adsorption belt 404 from running off course or wrinkling due to the inconsistent linear speed on both sides, the take-up rollers 403 are rotatably connected to the limit bracket 402 through bearings.

[0049] A first spline rod 407 is provided between the two take-up rollers 403. One end of the first spline rod 407 is fixedly connected to the shaft center of one of the take-up rollers 403, and the other end of the first spline rod 407 passes through the other take-up roller 403 and slides with it, forming a spline connection structure that is axially extensible and circumferentially synchronously driven.

[0050] Through this technical solution, when the second adjusting motor 310 drives the width positioning screw 308 to rotate, causing the two width adjusting arms 304 to move synchronously towards or away from each other, it can drive the limiting bracket 402 and the take-up roller 403, which are fixedly connected to the width adjusting arm 304, to move synchronously. This forces the first spline rod 407 to slide axially in the shaft hole of the take-up roller 403 to adapt to the change in spacing. Thus, while the adjusting mechanism 3 changes the span, it can still use the meshing of the tooth profile of the first spline rod 407 to transmit torque. At the same time, it also limits the relative angle difference between the two take-up rollers 403, which plays a role in adapting to different plate widths within a certain range and maintaining the synchronicity of the dual belt operation, preventing the adsorption belt 404 from twisting or loosening.

[0051] As a preferred technical solution, please refer to Figure 4 and Figure 7 As shown, guide rollers 406 are rotatably connected to the two connecting brackets 401, which are used to change the wrap angle of the adsorption belt 404 and to support and guide the non-working section of the adsorption belt 404. At the same time, the guide rollers 406 also provide pre-tightening support points for the adsorption belt 404.

[0052] The ends of the two guide rollers 406 are movably connected by the shaft of the first spline rod 407 to form a structure that can extend and retract synchronously with the width adjustment arm 304. This is to ensure that the adsorption belt 404 maintains a constant tension and flatness during width adjustment and circumferential rotation switching, and to prevent the belt from twisting or running off-center.

[0053] In a preferred embodiment of this application, see [reference] Figure 7 and Figure 8 As shown, the auxiliary anti-sagging bracket assembly 4 is also provided with an auxiliary cleaning structure 5, which includes a connecting frame 501, a cleaning roller 502 and an elastic support 503.

[0054] The elastic support 503 includes a fixed sleeve 5031 and an adjusting rod 5032. The fixed sleeve 5031 is fixedly installed on the outer wall of the take-up roller 403. The adjusting rod 5032 is slidably connected in the inner cavity of the fixed sleeve 5031. One end of the connecting spring 5033 is fixedly connected to the upper end of the adjusting rod 5032. The other end of the connecting spring 5033 is fixedly connected to the upper wall of the inner cavity of the fixed sleeve 5031. The connecting spring 5033 is in a stretched state and is used to continuously pull the adjusting rod 5032 upward to maintain an upward preload.

[0055] A connecting frame 501 is fixedly connected to the bottom end of the adjusting rod 5032, and a cleaning roller 502 is rotatably connected to the connecting frame 501 for wiping the surface of the adsorption belt 404.

[0056] Specifically, see Figure 8 As shown, the cleaning roller 502 includes a rotating roller 5021 and a cleaning scraper 5022. The rotating roller 5021 is rotatably connected to the connecting frame 501. Several cleaning scrapers 5022 are fixedly arranged on the arc-shaped wall of the rotating roller 5021. The cleaning scrapers 5022 are used to contact the bottom surface of the adsorption belt 404 and use friction to scrape off the metal dust or impurities adhering to the adsorption belt 404, so that the adsorption belt 404 remains clean.

[0057] Furthermore, see Figure 9 As shown, a linkage part 504 is provided between the limiting bracket 402 and the cleaning roller 502 to realize the power transmission between the take-up roller 403 and the cleaning roller 502. The linkage part 504 includes a first transmission wheel 5041, a second transmission wheel 5042 and a transmission belt 5043. The first transmission wheel 5041 is disposed on the side wall of the take-up roller 403 and is rotatably connected to the take-up roller 403. The first transmission wheel 5041 is coaxially connected to the limiting bracket 402.

[0058] The second drive wheel 5042 is located on the side wall of the connecting frame 501 and is rotatably connected to the connecting frame 501. The second drive wheel 5042 is coaxially connected to the cleaning roller 502.

[0059] A transmission belt 5043 is sleeved between the first transmission wheel 5041 and the second transmission wheel 5042.

[0060] Through the above technical solution, when the take-up roller 403 rotates under the drive of the take-up drive motor 405, since the first transmission wheel 5041 is relatively fixed by the limiting bracket 402, the rotation of the take-up roller 403 will drive the second transmission wheel 5042 to rotate through the transmission belt 5043, thereby driving the cleaning roller 502 to rotate synchronously, so that the adsorption belt 404 can perform surface cleaning synchronously during operation.

[0061] Furthermore, to adapt to the telescopic movement of the width adjustment arm 304, the cleaning roller 502 is configured as a split spline structure. The two cleaning rollers 502 are axially telescopically connected through the spline engagement of the second spline rod 5023, enabling follow-up adjustment. When the width adjustment arm 304 moves the limiting bracket 402, it can move the cleaning roller 502 as a whole, thereby always maintaining the effective contact length between the cleaning roller 502 and the adsorption belt 404, ensuring the cleaning effect.

[0062] In conjunction with the above specific embodiments and accompanying drawings, the specific working process of a metal sheet loading device applied to laser cutting equipment according to this application is as follows: S1: After the device is started, it first enters the initialization state, and all components are reset.

[0063] S2: The control system starts the first adjusting motor 309 based on the length data of the board to be processed, driving the length adjusting screw 306 to rotate.

[0064] Since the length adjusting screw 306 adopts a double helical reverse thread, it drives the two length adjusting arms 302 to move synchronously in opposite directions along the inner cavity of the length fixing arm 301, thereby adjusting the gripping span of the device in the length direction.

[0065] At the same time, based on the plate width data, the second adjustment motor 310 is started, driving the width positioning screw 308 to rotate, which in turn drives the two width adjustment arms 304 to move synchronously in opposite directions, adjusting the gripping span in the width direction.

[0066] During this process, the first spline rod 407 adaptively slides axially within the shaft hole of the take-up roller 403, ensuring that the two take-up rollers 403 and guide rollers 406 always maintain a synchronous connection to adapt to the new width dimension.

[0067] S3: The first drive motor 105 of the mobile conveying component 1 starts, and drives the mobile slide 103 to move along the fixed guide rod 102 through the first drive screw 104, so as to transport the gripping lifting component 2 and the adjusting mechanism 3 to the top of the storage area.

[0068] Subsequently, the second drive motor 205 starts, driving the second drive screw 204 to rotate, causing the rectangular moving arm 202 to extend from the rectangular fixed arm 201, so that the four electric suction cups 6 and the auxiliary anti-sag bracket assembly 4 are lowered as a whole to a predetermined position close to the upper surface of the metal sheet 7.

[0069] S4: Four electric suction cups 6 are connected to the vacuum and adsorb the four corner areas of the metal sheet 7.

[0070] At the same time, the winding drive motor 405 starts, driving the winding roller 403 to rotate and tensioning the adsorption belt 404. At this time, the area where the flexible magnetic absorbing sheet 4042 on the adsorption belt 404 is located rotates to the lower surface and uses magnetic force to adhere to the upper surface of the metal sheet 7. Together with the tensioned steel belt 4041, it provides continuous surface support for the middle of the sheet, effectively suppressing the deflection deformation of the sheet caused by its own weight.

[0071] While the adsorption belt 404 is running, the linkage unit 504 drives the cleaning roller 502 to rotate synchronously through the transmission of the first transmission wheel 5041, the transmission belt 5043 and the second transmission wheel 5042. Under the pre-tightening force of the elastic bracket 503, the cleaning scraper 5022 continuously scrapes the bottom surface of the adsorption belt 404 to remove any metal dust that may adhere to it.

[0072] S5: The grabbing and lifting assembly 2 drives the rectangular moving arm 202 to retract, raising the metal plate 7 that has been adsorbed and fixed to a safe height.

[0073] Subsequently, the mobile conveying assembly 1 drives the mobile slide 103 to move along the fixed guide rod 102 again, smoothly transferring the metal sheet 7 to the worktable of the laser cutting equipment.

[0074] S6: The moving conveyor assembly 1 and the gripping and lifting assembly 2 work together to align the metal sheet 7 and lower it onto the cutting worktable.

[0075] Upon reaching the placement position, the winding drive motor 405 is controlled to reverse slightly, causing the adsorption belt 404 to move circumferentially, thus moving the adsorption section away and rotating the non-magnetic smooth surface area to the position of contact with the metal plate 7, thereby eliminating the magnetic attraction.

[0076] Subsequently, the electric suction cup breaks the vacuum and releases the board.

[0077] S7: After the material loading is completed, the grab lifting component 2 is lifted, and the moving conveying component 1 drives the entire device back to the initial position above the storage area, ready for the next work cycle.

[0078] Through the above technical solutions, the auxiliary anti-sagging bracket assembly 4 produces significant beneficial effects through structural synergy.

[0079] First, the auxiliary anti-sag bracket assembly 4 uses a tensioned adsorption strip 404 to make surface contact with the upper surface of the metal sheet 7. Compared with the traditional discrete point distribution of vacuum suction cups, it can transform the support span in the middle of the plate into a continuous surface support. By utilizing the tensile stiffness of the steel strip 4041 itself and the adsorption force of the flexible magnetic absorbing sheet 4042, the deflection deformation of the large-size thin plate during the suspended transfer stage is effectively suppressed.

[0080] Secondly, the winding drive motor 405 drives the winding roller 403 to rotate, thereby controlling the circumferential position of the adsorption belt 404. This allows the adsorption section and the non-adsorption section to be switched as needed. During transfer, magnetic attraction is used to enhance stability, and during unloading, separation is achieved by switching to the non-magnetic area. This solves the problem that traditional magnetic attraction or vacuum adsorption methods are prone to causing thin plates to bounce and misalign during the moment of unadsorption.

[0081] Meanwhile, based on the telescopic structure formed by the length-fixed arm 301 and the length-adjusting arm 302, and driven by the double-helix reverse-threaded length-adjusting screw 306, the overall support span of the auxiliary anti-sagging bracket assembly 4 can be linearly adjusted according to the change in the length of the plate. Furthermore, with the help of the first spline rod 407, the two winding rollers 403 and guide rollers 406 form a rigid whole that can extend and retract synchronously with the width adjustment arm 304. While ensuring the synchronous operation of the two belts and preventing deviation, it also achieves adaptive matching between the bracket width and the plate width, thus expanding the applicability of the device.

[0082] In addition, the auxiliary cleaning structure 5 integrated on the side of the take-up roller 403 maintains constant force contact between the cleaning roller 502 and the bottom surface of the adsorption belt 404 through the elastic bracket 503, and realizes synchronous reverse rotation with the take-up roller 403 through the linkage part 504. It can continuously scrape and clean the surface of the adsorption belt 404 throughout the entire working process, preventing metal dust from accumulating on the surface of the belt and then transferring to the surface of the plate, thereby ensuring the cleanliness of the laser cutting area and indirectly improving the cutting quality and the service life of optical components.

[0083] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this application does not involve any improvement to the software and methods.

[0084] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A metal sheet loading device for use in laser cutting equipment, characterized in that: include: A mobile conveying assembly (1) is provided with a mobile slide (103), and a gripping lifting assembly (2) is fixedly connected to the mobile slide (103). The gripping and lifting assembly (2) includes a rectangular fixed arm (201) and a rectangular movable arm (202), and an adjustment mechanism (3) is fixedly connected to the bottom end of the rectangular movable arm (202). Electric suction cups (6) are fixedly connected to the four corners of the adjustment mechanism (3). An auxiliary anti-sagging bracket assembly (4) is also fixedly connected to the adjustment mechanism (3). The auxiliary anti-sagging bracket assembly (4) includes an adsorption belt (404) and a take-up roller (403). The adsorption belt (404) is used to adsorb and adhere to the upper surface of the metal sheet (7) to provide auxiliary support force.

2. The metal sheet loading device for laser cutting equipment according to claim 1, characterized in that: The adjustment mechanism (3) includes a length fixed arm (301), a length adjusting arm (302), a width fixed arm (303) and a width adjusting arm (304). The length fixed arm (301) has an inner cavity, and the length adjusting arm (302) is slidably connected to both sides of the inner cavity of the length fixed arm (301). Both length adjusting arms (302) have an inner cavity, and a length positioning block (305) is fixedly connected in the inner cavity of the length adjusting arm (302). The length adjusting screw (306) is rotatably connected in the inner cavity of the length fixing arm (301). The length adjusting screw (306) is a double helix reverse threaded rod. The two ends of the length adjusting screw (306) are threadedly engaged with two length positioning blocks (305).

3. The metal sheet loading device for laser cutting equipment according to claim 2, characterized in that: A first adjusting motor (309) is fixedly connected to the outer wall of the length fixing arm (301), and the first adjusting motor (309) is connected to the length adjusting screw (306) for power transmission.

4. The metal sheet loading device for laser cutting equipment according to claim 3, characterized in that: A width fixing arm (303) is fixedly connected to one end of each of the two length adjusting arms (302). The width fixing arm (303) has an inner cavity, and width adjusting arms (304) are slidably connected to both sides of the inner cavity of the width fixing arm (303). The width adjusting arm (304) has an internal cavity, and a width positioning block (307) is fixedly connected in the internal cavity of the width adjusting arm (304). A width positioning screw (308) is rotatably connected in the inner cavity of the width fixing arm (303). The width positioning screw (308) is a double-helix reverse threaded rod. The two ends of the width positioning screw (308) are threadedly engaged with two width positioning blocks (307).

5. The metal sheet loading device for laser cutting equipment according to claim 4, characterized in that: A second adjusting motor (310) is fixedly installed on the outer wall of the width fixing arm (303), and the end of the output shaft of the second adjusting motor (310) is poweredly connected to the width positioning screw (308).

6. The metal sheet loading device for laser cutting equipment according to claim 1, characterized in that: The auxiliary anti-sagging bracket assembly (4) also includes a connecting bracket (401) and a limiting bracket (402). Both sides of the adjustment mechanism (3) are provided with take-up rollers (403). An adsorption belt (404) is connected between the two winding rollers (403). A winding drive motor (405) is also fixedly connected to one side of the limiting bracket (402), and the end of the output shaft of the winding drive motor (405) is coaxially connected to the winding roller (403).

7. The metal sheet loading device for laser cutting equipment according to claim 6, characterized in that: The adsorption strip (404) includes a steel strip (4041) and flexible magnetic sheets (4042), and a plurality of flexible magnetic sheets (4042) are fixedly disposed on the upper surface of the steel strip (4041).

8. The metal sheet loading device for laser cutting equipment according to claim 6, characterized in that: A first spline rod (407) is provided between the two take-up rollers (403). One end of the first spline rod (407) is fixedly connected to the shaft center of one of the take-up rollers (403), and the other end of the first spline rod (407) passes through the other take-up roller (403) and slides with it.

9. The metal sheet loading device for laser cutting equipment according to claim 1, characterized in that: The auxiliary anti-sagging bracket assembly (4) is also provided with an auxiliary cleaning structure (5), which includes a connecting frame (501), a cleaning roller (502) and an elastic support (503). The elastic support (503) includes a fixed sleeve (5031) and an adjusting rod (5032). The fixed sleeve (5031) is fixedly disposed on the outer wall of the take-up roller (403). The adjusting rod (5032) is slidably connected in the inner cavity of the fixed sleeve (5031). One end of a connecting spring (5033) is fixedly connected to the upper end of the adjusting rod (5032). The other end of the connecting spring (5033) is fixedly connected to the upper wall of the inner cavity of the fixed sleeve (5031). The connecting spring (5033) is in a stretched state.

10. The metal sheet loading device for laser cutting equipment according to claim 9, characterized in that: The bottom end of the adjusting rod (5032) is fixedly connected to a connecting frame (501), and a cleaning roller (502) is rotatably connected to the connecting frame (501). The cleaning roller (502) includes a rotating roller (5021) and a cleaning scraper (5022). The rotating roller (5021) is rotatably connected to the connecting frame (501). Several cleaning scrapers (5022) are fixedly provided on the arc-shaped wall of the rotating roller (5021). The cleaning scrapers (5022) are used to contact the bottom surface of the adsorption belt (404).

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