A plate cutting device for stainless steel dining car production and processing

Abstract

The application relates to the technical field of laser cutting, in particular to a plate cutting device for stainless steel dining car production and processing; the device comprises a cutting table and a gantry sliding left and right on the upper surface of the cutting table; the top of the gantry is connected with a laser seat through sliding in the front and back directions; the left side of the laser seat is connected with a laser cutting head through sliding in the up and down directions; the gantry, the laser seat and the laser cutting head can be controlled to move in a three-dimensional space; a square groove is arranged through the upper surface of the cutting table; a sliding groove is vertically arranged on the front and back inner walls of the square groove; a plurality of the sliding grooves are uniformly distributed in the left and right directions; the sliding grooves on the front and back inner walls of the square groove are in one-to-one correspondence; a sliding block is connected with the sliding groove through sliding in the up and down directions; the device can realize automatic avoidance of the support bars at the cutting path, avoid laser damage to the support bars, does not need to frequently replace the support bars, reduces the maintenance cost and downtime, simultaneously keeps the dynamic stable support of the plate, prevents cutting deformation and guarantees the cutting precision.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, specifically to a sheet metal cutting device for the production and processing of stainless steel food carts. Background Technology

[0002] In the production and processing of stainless steel food carts, the cutting of metal sheets is one of the key processes, directly affecting the structural precision and appearance quality of the cart. Currently, laser cutting technology is widely used for cutting stainless steel food cart sheets. The principle is to use a high-energy-density laser beam to irradiate the surface of the sheet, causing the irradiated area to melt, vaporize, or reach its ignition point rapidly. At the same time, high-pressure gas is used to blow away the molten material, thereby achieving precise cutting of the sheet. Laser cutting has advantages such as fast cutting speed, high precision, and smooth cuts, which can meet the processing requirements of stainless steel food carts for complex shapes and high precision. Traditional laser cutting equipment is usually equipped with a fixed metal grid cutting table. The metal sheet is placed on the grid for cutting. The main function of the grid is to support the sheet and provide space for laser penetration.

[0003] However, traditional metal grating cutting tables have obvious defects in the process of cutting stainless steel food cart panels. Since the grating is a fixed structure, the laser beam can easily irradiate the metal strips of the grating after penetrating the panel, causing the grating to be continuously cut and damaged. After long-term use, a large number of gaps will form on the surface of the grating, which not only reduces the support stability of the panel, causing the panel to deform and the cutting accuracy to decrease during cutting, but also requires frequent replacement of the grating, increasing equipment maintenance costs and production downtime. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention proposes a sheet metal cutting device for the production and processing of stainless steel food carts. This invention can automatically avoid the support strip at the cutting path, prevent laser damage to the support strip, eliminate the need for frequent replacement of the support strip, reduce maintenance costs and downtime, and at the same time maintain dynamic and stable support of the sheet metal to prevent cutting deformation and ensure cutting accuracy.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: A stainless steel plate cutting device for the production and processing of stainless steel food carts, comprising a cutting table and a gantry frame that slides left and right and is driven on the upper surface of the cutting table; a laser base that slides back and forth on the top of the gantry frame and is driven; a laser cutting head that slides up and down on the left side of the laser base; the gantry frame, laser base, and laser cutting head can be controlled to move in three-dimensional space; a square groove is provided through the upper surface of the cutting table; vertical sliding grooves are provided on the front and rear inner walls of the square groove; multiple sliding grooves are evenly distributed in the left-right direction; The inner walls of the square groove have corresponding grooves; a slider is slidably connected to the groove; the groove passes through a trigger hole; a trigger rod fixed to the slider is movably connected to the trigger hole; the lower end of the slider is connected to the lower inner wall of the groove by a first spring; an inverted triangular trigger block is connected to the inner side of the lower end of the gantry; the laser cutting head is located between the two trigger blocks; the two inclined trigger surfaces of the trigger block can press the upper end of the trigger rod; toothed support bars are evenly distributed and spaced left and right inside the square groove; the support bars are connected between the two corresponding sliders.

[0006] Preferably, the slider has a rotating hole extending through it; a rotating rod fixed to the support bar is rotatably connected inside the rotating hole; a vertical groove is provided on the vertical inner wall of the slide groove; a gear is fixed to the end of the rotating rod away from the support bar through the slider; the left and right edges of the gear extend into the vertical groove; a rack that meshes with the gear is fixed to one of the vertical grooves in the slide groove.

[0007] Preferably, the rack is located at the lower part of the vertical groove; the gear is disengaged from the rack at the upper end of the vertical groove; a magnet is embedded in the inner wall of the rotating hole; and an iron block attracted by the magnet is embedded in the outer surface of the rotating rod.

[0008] Preferably, the top of the slide groove is provided with a fixing groove for inserting the gear near its upper edge; a fixing tooth for gear meshing is fixedly connected in the fixing groove.

[0009] Preferably, the distance between two adjacent support bars is greater than the width of the support bar.

[0010] Preferably, the lower end of the slide groove has a guide hole extending downwards; a guide rod fixed to the lower surface of the slider is slidably connected inside the guide hole; the first spring is sleeved on the outside of the guide rod.

[0011] Preferably, the upper surface of the trigger block and the two inclined trigger surfaces are provided with triangular grooves; the end of the triangular groove is rotatably connected to a corner roller; the other positions of the triangular groove are rotatably connected to a transition roller; the outer walls of the corner roller and the transition roller are driven by a transmission belt; the upper end of the trigger rod is hemispherical.

[0012] Preferably, the lower end of the gantry frame is fixedly connected to an inverted L-shaped adjusting frame; the adjusting frame is provided with adjusting holes through which the adjusting rod passes; there are multiple adjusting holes; the lower end of the adjusting rod is fixedly connected to the upper surface of the trigger block via an n-shaped strip; the adjusting rod can be adjusted up and down axially through the adjusting holes.

[0013] Preferably, the adjusting frame has an outwardly penetrating adjusting groove inside; the adjusting groove separates the adjusting hole vertically; a staggered plate with staggered holes is horizontally slidably connected inside the adjusting groove; the staggered plate is connected to the inner wall of the adjusting groove by a second spring; the staggered holes can be aligned with the adjusting holes after the staggered plate is pressed; the outer wall of the adjusting rod has an annular groove evenly arranged along the axial direction; the staggered plate can be inserted into the groove.

[0014] The beneficial effects of this invention are as follows:

[0015] 1. This invention enables automatic avoidance of support bars at the cutting path, preventing laser damage to the support bars, eliminating the need for frequent replacement of support bars, reducing maintenance costs and downtime, while maintaining dynamic and stable support for the sheet material, preventing cutting deformation, and ensuring cutting accuracy.

[0016] 2. In this invention, the first spring drives the gear at the end of the rotating rod to mesh with the rack and move upward, thereby causing the support bar to throw away the debris attached to its surface during the upward repositioning process. This prevents the debris from affecting the support bar's support of the plate, making the plate support more stable and improving the stability of the laser cutting of the plate.

[0017] 3. This invention can precisely control the downward movement of the support bar, taking into account both laser avoidance and stroke optimization, making the gantry frame movement more labor-saving and energy-efficient, while also reducing the extension and contraction range of the first spring, extending its service life, and ensuring stable operation. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a diagram showing the location of the slide groove in this invention; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 This is a perspective view of the support strip in this invention; Figure 5 This is a diagram showing the position of the gears in this invention; Figure 6 This is a cross-sectional view of the vertical groove and the sliding groove in this invention; Figure 7 This is a cross-sectional view of the rotating rod and the slider in this invention; Figure 8 This is a cross-sectional view of the trigger block and the adjustment frame in this invention; Figure 9 This is a cross-sectional view of the triangular groove in this invention; Figure 10 This is a cross-sectional view of the adjusting frame and the staggered plate in this invention.

[0020] In the diagram: Cutting table 1, square groove 11, sliding groove 12, trigger hole 13, vertical groove 14, rack 15, fixing groove 16, fixing tooth 17, guide hole 18, gantry frame 2, laser seat 21, laser cutting head 22, slider 3, trigger rod 31, first spring 32, rotating hole 33, rotating rod 34, gear 35, magnet 36, iron block 37, guide rod 38, trigger block 4, trigger surface 41, triangular groove 42, corner roller 43, transition roller 44, transmission belt 45, support bar 5, adjusting frame 6, adjusting rod 61, adjusting hole 62, n-shaped bar 63, adjusting groove 64, staggered plate 65, staggered hole 66, second spring 67, slot 68. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 10 As shown, the present invention includes the following embodiments: Example 1: A sheet metal cutting device for stainless steel food cart production and processing, comprising a cutting table 1 and a gantry frame 2 that slides left and right on the upper surface of the cutting table 1 and is driven thereto; a laser base 21 slides back and forth on the top of the gantry frame 2 and is driven thereto; a laser cutting head 22 slides up and down on the left side of the laser base 21 and is driven thereto; the gantry frame 2, the laser base 21, and the laser cutting head 22 can be controlled to move in three-dimensional space; a square groove 11 is provided through the upper surface of the cutting table 1; sliding grooves 12 are vertically provided on the front and rear inner walls of the square groove 11; multiple sliding grooves 12 are evenly distributed in the left and right direction; the sliding grooves 12 on the front and rear inner walls of the square groove 11 are paired one-to-one. The slide 12 is connected to the slider 3 by sliding up and down; the slide 12 passes through the trigger hole 13; the trigger hole 13 is connected to the trigger rod 31 fixed to the slider 3 by moving up and down; the lower end of the slider 3 is connected to the lower inner wall of the slide 12 by a first spring 32; the lower end of the gantry 2 is connected to the inner side of the inverted triangular trigger block 4; the laser cutting head 22 is located between the front and rear trigger blocks 4; the two inclined trigger surfaces 41 of the trigger block 4 can squeeze the upper end of the trigger rod 31; the square groove 11 has toothed support bars 5 spaced left and right and evenly distributed; the support bars 5 are connected between the front and rear corresponding sliders 3.

[0023] When the device is not started, the first spring 32 is in a naturally extended state, pushing the slider 3 upward, which drives the trigger rod 31 fixed to the slider 3 to move upward, so that the upper end of the trigger rod 31 extends out of the upper surface of the cutting table 1; the toothed support bars 5 are evenly distributed on the left and right sides inside the square groove 11, and each support bar 5 is connected between the two corresponding sliders 3 at the front and rear, and is in a rising state synchronously with the slider 3. All the toothed support bars 5 in contact with the plate form the initial support surface for the plate. At this time, the gantry 2, laser seat 21, and laser cutting head 22 are all in the initial standby position, and the laser cutting head 22 is located between the two inverted triangular trigger blocks 4 at the front and rear; the operator puts the stainless steel food cart plate to be cut (depending on the production needs of the food cart, different types of plates can be selected) into the cutting table. A thin sheet of the same size is placed stably on the upper surface of the cutting table 1. The lower surface of the sheet is in close contact with the upper surface of the toothed support strip 5. The toothed structure increases the friction between the sheet and the toothed support strip. Combined with the tight support of the trigger rod 31 under the action of the first spring 32, the sheet is initially positioned stably, effectively preventing the sheet from shifting or shaking after placement. At the same time, the toothed support strip 5 can distribute the pressure on the sheet and prevent local deformation due to pressure. The device control system is activated. According to the cutting size and cutting path of the stainless steel food cart sheet, the movement trajectory of the gantry 2, laser seat 21, and laser cutting head 22 is preset to ensure that the laser cutting head 22 can accurately align with the cutting position. At the same time, the power, speed and other parameters of laser cutting are set to adapt to the cutting of stainless steel sheet. The requirements are as follows: The movement of the gantry 2, laser base 21, and laser cutting head 22 is within the scope of existing technology capable of three-dimensional movement. For example, the gantry 2 is driven to move left and right using a lead screw and slider pair, the laser base 21 is controlled to move back and forth along the top of the gantry 2 using the lead screw and slider pair, and the laser cutting head 22 is displaced vertically using the lead screw and slider pair and the laser base 21. Further details are omitted here. The control system drives the gantry 2 to slide left and right along the cutting table 1. During the left and right movement of the gantry 2, the fixed trigger block 4 will slide left and right. The two trigger surfaces 41 of the trigger block 4 will press against the upper end of the trigger rod 31. Under this pressure, the upper end of the trigger rod 31 will slide along the trigger hole 13, and the trigger rod 31 will drive the slider 3... Sliding downwards along the corresponding groove 12, the first spring 32 is compressed simultaneously. The toothed support bar 5, which is fixedly connected to the slider 3, moves downwards synchronously with the slider 3. During the downward movement of the slider 3, the upper end of the toothed support bar 5 gradually moves away from the plate, avoiding the cutting path of the laser cutting head 22 and preventing interference between the toothed support bar 5 and the laser emitted by the laser cutting head 22, thus protecting the support bar 5. During the cutting process of the gantry 2, the trigger rods 31 located on the left and right sides of the cutting path of the laser cutting head 22 remain extended. The toothed support bar 5 provides multi-point stable support for other parts of the plate, thereby preventing the plate from vibrating and deforming due to suspension. At the same time, the toothed structure can prevent the plate from sliding during the cutting process.The trigger rod 31 and toothed support bar 5 at the cutting path continuously retract under the pressure of the trigger block 4, ensuring that the laser cutting head 22 can smoothly and accurately cut the plate, achieving the synchronous cooperation of "avoiding cutting + stable dynamic support". After the gantry 2 drives the laser cutting head 22 to complete the cutting of a section of the path, it continues to move along the preset trajectory. The trigger block 4 corresponding to the cut area leaves the trigger rod 31, the first spring 32 loses the squeezing force, automatically resets and pushes the slider 3 upward, driving the trigger rod 31 and toothed support bar 5 to move upward synchronously, and extend out of the surface of the cutting table 1 again to form a stable support for the plate. The above work is repeated until the cutting operation of the entire stainless steel food cart plate is completed. After the cutting operation is completed, the control system controls the gantry 2, laser seat 21 and laser cutting head 22 to return to the initial standby position, turns off the laser cutting function, and the operator removes the cut plate. The device returns to the initial state, and all trigger rods 31 and toothed support bars 5 remain in the extended state, waiting for the next cutting operation. This invention enables the support bar 5 to automatically avoid laser damage at the cutting path, eliminating the need for frequent replacement of the support bar 5, reducing maintenance costs and downtime, while maintaining dynamic and stable support for the sheet material to prevent cutting deformation and ensure cutting accuracy.

[0024] Example 2: The slider 3 has a rotating hole 33 extending through it from front to back; a rotating rod 34 fixedly connected to the support bar 5 is rotatably connected inside the rotating hole 33; a vertical groove 14 is provided on the vertical inner wall of the slide groove 12; the end of the rotating rod 34 away from the support bar 5 passes through the slider 3 and is fixedly connected to a gear 35; the left and right edges of the gear 35 extend into the vertical groove 14; one of the vertical grooves 14 in the slide groove 12 is fixedly connected to a rack 15 that meshes with the gear 35.

[0025] In this embodiment, the rack 15 is located at the lower position of the vertical groove 14; the gear 35 disengages from the rack 15 at the upper end of the vertical groove 14; a magnet 36 is embedded in the inner wall of the rotating hole 33; and an iron block 37 attracted by the magnet 36 is embedded in the outer surface of the rotating rod 34.

[0026] In this embodiment, the top of the slide groove 12 is provided with a fixing groove 16 for inserting the gear 35 near its upper edge; a fixing tooth 17 for meshing with the gear 35 is fixedly connected in the fixing groove 16.

[0027] After the sheet material is placed on the upper end of multiple support bars 5, the first spring 32 under the slider 3 is in a naturally extended state. The total elastic force of a single or all first springs 32 is greater than the weight of the stainless steel food cart sheet material to be cut, maintaining the stability of the sheet material support. At the same time, it ensures that the subsequent gear 35 and the fixed tooth 17 mesh stably and will not move out of the fixed groove 16. The upper end of the trigger rod 31 is in the state of extending out of the trigger hole 13. Then the device is started to carry out the cutting operation. The gantry 2 drives the trigger block 4 to move left and right. The tilt of the trigger block 4 causes one of the trigger surfaces 41 to press the upper end of the trigger rod 31. After being pressed, the trigger rod 31 slides down along the trigger hole 13, thereby driving the slider 3 to overcome the elastic force of the first spring 32 and move down along the slide groove 12. During the downward movement of slider 3, it first drives gear 35 to move out of the fixed groove 16 and disengage from the fixed tooth 17, releasing the locking state of gear 35, rotating rod 34, and support bar 5. As slider 3 continues to move downward, gear 35 gradually moves from the upper end of vertical groove 14 to the lower end of vertical groove 14, and begins to mesh with rack 15 in vertical groove 14. At this time, the force of rack 15 on gear 35 is greater than the attraction force of magnet 36 on iron block 37, and magnet 36 disengages from iron block 37. As slider 3 moves downward, gear 35 drives rotating rod 34 to rotate in rotating hole 33 under the meshing action of rack 15. The rotation of rotating rod 34 synchronously drives support bar 5 to rotate. Support bar 5 continues to move downward and rotate synchronously with slider 3, smoothly completing the excitation process. The laser cutting path avoids interference between the support bar 5 and the laser beam. After the laser cutting head 22 completes the cutting operation in the corresponding area, the gantry 2 drives the trigger block 4 to continue moving. The lower end of the trigger block 4 passes the trigger rod 31, the first spring 32 resets, and its elastic force pushes the slider 3 upward, causing the slider 3 to move vertically upward along the slide groove 12. During the upward movement of the slider 3, the trigger rod 31 moves upward along the other trigger surface 41 of the trigger block 4, so that the slider 3 moves upward stably. The upward movement of the slider 3 synchronously drives the gear 35, the rotating rod 34 and the support bar 5 to move upward together. During the upward movement of the gear 35, it first maintains meshing with the rack 15 at the lower position of the vertical groove 14. The gear 35 rolls upward along the rack 15, thereby driving the rotating rod 34 in the rotating hole 3. When the rotating rod 34 rotates in the reverse direction, it synchronously drives the support bar 5 to rotate. During the rotation of the support bar 5, the debris generated by laser cutting on its surface is quickly thrown away to prevent the debris from adhering to the surface of the support bar 5. When the slider 3 continues to move up to near the initial position, the gear 35 gradually disengages from the rack 15. At this time, the magnet 36 in the rotating hole 33 once again exerts an attraction force on the iron block 37 on the rotating rod 34, driving the rotating rod 34 to rotate to the preset angle, so that the toothed edge of the support bar 5 faces upward again. Then the slider 3 continues to move up, driving the gear 35 into the fixing groove 16, and meshing with the fixing tooth 17 again, locking and fixing the gear 35, the rotating rod 34 and the support bar 5. At this time, the slider 3 is located at the upper limit position in the slide groove 12.Support bar 5 maintains a stable supporting posture, vertically adhering to the lower surface of the board. Since the surface debris has been thrown away, there is no debris obstruction between support bar 5 and the lower surface of the board, achieving stable support for the board and providing a stable supporting foundation for subsequent cutting operations or board placement. In this embodiment, the first spring 32 drives the gear 35 at the end of the rotating rod 34 to mesh with the rack 15 and move upward, so that the support bar 5 will throw away the debris attached to the surface during the upward resetting process, thereby avoiding the debris from affecting the support bar 5's support of the plate, making the plate support more stable and improving the stability of the plate laser cutting.

[0028] Example 3: The distance between two adjacent support bars 5 is greater than the width of the support bar 5.

[0029] As the support bar 5 rotates with the drive of the rotating rod 34, since the distance between two adjacent support bars 5 is greater than the width of the support bar 5, the rotating support bar 5 will not interfere with the rotation of the adjacent support bars 5, so that the support bar 5 can be driven by the rotating rod 34 to rotate smoothly; the number of support bars 5 in the square groove 11 is set as much as possible while ensuring that there is no interference, so as to ensure the support effect of the support bar 5 on the plate.

[0030] Example 4: The lower end of the slide groove 12 is provided with a guide hole 18; a guide rod 38 fixed to the lower surface of the slider 3 is slidably connected in the guide hole 18; the first spring 32 is sleeved on the outside of the guide rod 38.

[0031] When slider 3 slides up and down along the groove 12, it drives guide rod 38 to slide synchronously within guide hole 18. First spring 32 is sleeved on the outside of guide rod 38 and extends and retracts synchronously with slider 3 without offset or misalignment. When trigger block 4 presses trigger rod 31 to move slider 3 downward, guide rod 38 moves vertically downward along guide hole 18, limiting slider 3 from shaking. When first spring 32 resets and pushes slider 3 upward, guide rod 38 moves vertically upward along guide hole 18, guiding slider 3 to accurately return to its initial position. The cooperation between guide hole 18 and guide rod 38 can prevent slider 3 from tilting or deviating during sliding, ensuring smooth lifting and lowering of support bar 5, thereby ensuring stable support of the board. At the same time, it also limits the first spring 32, preventing it from twisting and deforming during extension and retraction; extends spring service life; reduces device maintenance frequency; ensures continuous and stable cutting operation; and indirectly improves the cutting accuracy of the board.

[0032] Example 5: The upper surface of the trigger block 4 and the two inclined trigger surfaces 41 are provided with triangular grooves 42; the end of the triangular groove 42 is rotatably connected to the corner roller 43; the other positions of the triangular groove 42 are rotatably connected to the transition roller 44; the outer walls of the corner roller 43 and the transition roller 44 are driven by the transmission belt 45; the upper end of the trigger rod 31 is hemispherical.

[0033] When the gantry 2 moves the trigger block 4 left and right, the upper hemispherical end of the trigger rod 31 contacts the transmission belt 45 of the trigger surface 41 of the trigger block 4. When the trigger block 4 moves and squeezes the trigger rod 31, the transmission belt 45 rotates synchronously with the contact of the trigger rod 31. The corner roller 43 and the transition roller 44 assist the transmission belt 45 to run smoothly and avoid jamming. After the lower end of the trigger block 4 passes the trigger rod 31, the trigger rod 31 moves up under the elastic force of the corresponding first spring 32 and contacts the other trigger surface 41 of the transmission belt 45 again, so that the transmission belt 45 drives again. Through the setting of the transmission belt 45, the contact between the trigger rod 31 and the trigger surface 41 changes from the original active friction to rolling friction, thereby making the support rod drive the support bar 5 to rise and fall more smoothly.

[0034] Example 6: The lower end of the gantry 2 is fixedly connected to an inverted L-shaped adjustment frame 6; the adjustment frame 6 is provided with adjustment holes 62 through which the adjustment rod 61 passes; there are multiple adjustment holes 62; the lower end of the adjustment rod 61 is fixedly connected to the upper surface of the trigger block 4 through an n-shaped strip 63; the adjustment rod 61 can be adjusted up and down axially through the adjustment holes 62.

[0035] In this embodiment, the adjusting frame 6 has an outwardly penetrating adjusting groove 64 inside; the adjusting groove 64 separates the adjusting hole 62 vertically; a staggered plate 65 with a staggered hole 66 is horizontally slidably connected inside the adjusting groove 64; the staggered plate 65 is connected to the inner wall of the adjusting groove 64 by a second spring 67; the staggered hole 66 can be aligned with the adjusting hole 62 after the staggered plate 65 is pressed; the outer wall of the adjusting rod 61 has an annular groove 68 uniformly arranged along the axial direction; the staggered plate 65 can be inserted into the groove 68.

[0036] In actual cutting operations, the downward movement of the support bar 5 needs to be adjusted according to the thickness of the stainless steel food cart sheet and the laser cutting depth. If the sheet is thicker or the laser cutting depth is deeper, the support bar 5 needs to be moved down more to fully avoid the laser; if the sheet is thinner or the laser cutting is shallower, the support bar 5 does not need to be moved down too much to avoid unnecessary travel and waste. This requirement can be achieved by adjusting the height of the trigger block 4. Specifically, first press the offset plate 65 in the adjustment groove 64 to make it slide horizontally against the elastic force of the second spring 67, and align the offset hole 66 with the adjustment hole 62 on the adjustment frame 6; move the adjustment rod 61 up and down to drive the n-shaped bar 63 and the trigger block 4. The trigger block 4 is raised and lowered synchronously, and the height of the trigger block 4 is adjusted to control the downward stroke of the trigger rod 31 being squeezed, thereby controlling the downward movement of the support bar 5. This ensures that the laser is avoided while minimizing the downward movement of the support bar 5. The offset plate 65 is released, and the second spring 67 is reset and pushed back. The offset hole 66 is offset from the adjustment hole 62, and the offset plate 65 is locked in the slot 68 on the outer wall of the adjustment rod 61. During cutting, the gantry 2 drives the trigger block 4 to move stably and squeeze the trigger rod 31 according to the preset stroke. This ensures the avoidance effect and reduces unnecessary movement. The operation can be repeated to quickly adjust when changing cutting requirements. This embodiment can precisely control the downward movement of the support bar 5, taking into account both laser avoidance and stroke optimization. This makes the movement of the gantry 2 more labor-saving and energy-efficient, while also reducing the extension and retraction range of the first spring 32, extending its service life, and ensuring stable operation.

[0037] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance. In the description of the present invention, "fixed connection" refers to a fixed connection.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sheet metal cutting device for stainless steel food cart production and processing, comprising a cutting table and a gantry frame that slides left and right on the upper surface of the cutting table; a laser base is slidably connected to the top of the gantry frame; a laser cutting head is slidably connected to the left side of the laser base; the gantry frame, laser base, and laser cutting head can be controlled to move in three-dimensional space; characterized in that: A square groove is provided through the upper surface of the cutting table; vertical sliding grooves are provided on the front and rear inner walls of the square groove; multiple sliding grooves are evenly distributed in the left and right direction; the sliding grooves on the front and rear inner walls of the square groove correspond one-to-one; a slider is slidably connected to the sliding groove; a trigger hole is passed through the upper side of the sliding groove; a trigger rod fixed to the slider is movably connected to the trigger hole; the lower end of the slider is connected to the lower inner wall of the sliding groove by a first spring; an inverted triangular trigger block is connected to the inner side of the lower end of the gantry frame; the laser cutting head is located between the front and rear trigger blocks; the two inclined trigger surfaces of the trigger block can press the upper end of the trigger rod; toothed support strips are evenly distributed in the square groove at left and right intervals; the support strips are connected between the front and rear corresponding sliders.

2. The sheet metal cutting device for stainless steel food cart production and processing according to claim 1, characterized in that: The slider has a rotating hole running through it from front to back; a rotating rod fixed to the support bar is rotatably connected inside the rotating hole; a vertical groove is provided on the vertical inner wall of the slide groove; a gear is fixed to the end of the rotating rod away from the support bar through the slider; the left and right edges of the gear extend into the vertical groove; a rack that meshes with the gear is fixed to one of the vertical grooves in the slide groove.

3. The sheet metal cutting device for stainless steel food cart production and processing according to claim 2, characterized in that: The rack is located at the lower part of the vertical groove; the gear disengages from the rack at the upper end of the vertical groove; a magnet is embedded in the inner wall of the rotating hole; and an iron block attracted by the magnet is embedded in the outer surface of the rotating rod.

4. The sheet metal cutting device for stainless steel food cart production and processing according to claim 3, characterized in that: The top of the slide is provided with a fixing groove for inserting the gear near its upper edge; a fixing tooth for gear meshing is fixedly connected in the fixing groove.

5. The sheet metal cutting device for stainless steel food cart production and processing according to claim 2, characterized in that: The distance between two adjacent support bars is greater than the width of the support bar.

6. The sheet metal cutting device for stainless steel food cart production and processing according to claim 1, characterized in that: The slide groove has a guide hole extending downwards at its lower end; a guide rod, which is fixed to the lower surface of the slider, is slidably connected inside the guide hole; the first spring is sleeved on the outside of the guide rod.

7. The sheet metal cutting device for stainless steel food cart production and processing according to claim 1, characterized in that: The upper surface of the trigger block and the two inclined trigger surfaces are provided with triangular grooves; the ends of the triangular grooves are rotatably connected to corner rollers; the other positions of the triangular grooves are rotatably connected to transition rollers; the outer walls of the corner rollers and transition rollers are driven by a transmission belt; the upper end of the trigger rod is hemispherical.

8. The sheet metal cutting device for stainless steel food cart production and processing according to claim 1, characterized in that: The lower end of the gantry frame is fixedly connected to an inverted L-shaped adjustment frame; the adjustment frame is provided with adjustment holes through which the adjustment rod passes; there are multiple adjustment holes; the lower end of the adjustment rod is fixedly connected to the upper surface of the trigger block through an n-shaped strip; the adjustment rod can be adjusted up and down through the adjustment holes.

9. The sheet metal cutting device for stainless steel food cart production and processing according to claim 8, characterized in that: The adjusting frame has an outwardly penetrating adjusting groove inside; the adjusting groove separates the adjusting hole vertically; a staggered plate with staggered holes is horizontally slidably connected inside the adjusting groove; the staggered plate is connected to the inner wall of the adjusting groove by a second spring; the staggered holes can be aligned with the adjusting holes after the staggered plate is pressed; the outer wall of the adjusting rod has annular grooves evenly arranged along the axial direction; the staggered plate can be inserted into the grooves.

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