A sheet metal cutting device

Abstract

This invention relates to the field of laser cutting technology, specifically disclosing a sheet metal cutting device. A support frame is slidably mounted on a machine frame, a roller is rotatably mounted on the upper part of the support frame, a scraper is located at the bottom of the roller, a positioning plate is slidably connected to the support frame, and a protrusion is provided on the side of the positioning plate. Two limiting units are arranged along the length direction of the machine frame, each limiting unit includes multiple limiting members arranged at intervals in the vertical direction, and the two limiting units are staggered vertically, with a gap between the two limiting units. One end of the limiting member facing the gap has an inclined surface for fitting with the protrusion. When the diameter wear of the roller reaches a set amount, the control component can control the positioning plate to move in the length direction of the machine frame. This invention can scrape off the residue adhering to the roller with the scraper, and when the diameter wear of the roller reaches a set amount, the roller can move upward by a set distance to compensate for the wear of the roller.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, and more specifically to a device for cutting sheet metal. Background Technology

[0002] Laser cutting is a cutting method that uses a high-energy-density laser beam to irradiate the surface of a material, causing the material to melt, vaporize, or burn rapidly. Laser cutting is widely used in the processing of metallic and non-metallic materials, and is particularly suitable for the automotive, machinery, power, hardware, and electrical appliance industries.

[0003] A novel laser cutting machine is disclosed in patent document CN112846547B, comprising a frame, a work platform mounted on the frame, and a laser device. The laser device is slidably connected to the frame. The machine also includes a feeding device and a tilting unloading device. The feeding device is located on the right side of the work platform for picking up materials and conveying them to the platform. The tilting unloading device is movably connected below the work platform and passes through it to unload materials onto the platform. This novel laser cutting machine, as disclosed in the patent document, features a high degree of automation, employing automatic feeding and unloading, resulting in short feeding and unloading times. One person can operate multiple machines, achieving high cutting efficiency and stable cutting quality. Furthermore, the feeding device and laser device are integrated into a single structure, saving installation space, simplifying assembly, reducing maintenance costs, and ensuring that the sheet material remains centered when entering the work platform during feeding, thus guaranteeing the cutting effect.

[0004] In the above-mentioned technical solution, the plate to be cut is placed on several horizontally spaced support strips. The support strips have serrated protrusions. However, the heat generated by laser cutting is very concentrated. Therefore, during the cutting process, the metal may melt and form slag, which will adhere to the serrated protrusions. After long-term use, the slag adhering to the serrated protrusions will increase, which will significantly reduce the accuracy when the plate is placed horizontally. In addition, the presence of slag may also damage the lower surface of the plate. Summary of the Invention

[0005] This invention provides a sheet metal cutting device, which aims to solve the problem in related technologies where more and more residue adheres to the serrated protrusions, which greatly reduces the accuracy of the sheet metal when placed horizontally, and the presence of residue may also cause damage to the lower surface of the sheet metal.

[0006] A sheet metal cutting device includes a frame and a laser cutting assembly mounted on the frame, and also includes multiple support mechanisms. The multiple support mechanisms are mounted on the frame in an array. Each support mechanism includes a support frame, rollers, scrapers, positioning plates, limiting components, and control components. The support frame is slidably mounted on the frame, the rollers are rotatably mounted on the upper part of the support frame, the scrapers are disposed at the bottom of the rollers and can keep in contact with the rollers, the positioning plates are slidably connected to the support frames, the positioning plates can slide along the length of the frame, and the positioning plates and the support frames can move synchronously in the vertical direction. The positioning plates have protrusions on their sides.

[0007] The limiting assembly includes two limiting units, which are arranged along the length of the frame. Each limiting unit includes multiple limiting members arranged at intervals in the vertical direction. The two limiting units are staggered vertically and there is a gap between them. One end of the limiting member facing the gap has an inclined surface for fitting with the protrusion.

[0008] When the diameter of the roller wears to a set amount, the control component can control the positioning plate to move along the length of the frame.

[0009] The beneficial effects of this invention are as follows: When cutting the board, by controlling the rotation of the roller, the residue adhering to the roller can be scraped off by the scraper. When the diameter of the roller wears to a set amount, the roller can move upward by a set distance to compensate for the wear of the roller, thereby improving the accuracy of the board placement and ensuring the cutting precision.

[0010] Preferably, the support mechanism further includes a support base and an elastic element. The support base is disposed below the roller and is slidably connected to the support frame. The scraper is fixedly connected to the support base. The elastic element is connected between the support base and the support frame and can apply an upward elastic force to the support base. The effect is that by applying an upward elastic force to the support base through the elastic element, the scraper can be kept in contact with the roller.

[0011] Preferably, the control component includes an elastic sheet, the upper end of which is fixedly connected to the support base, and the lower end of which moves through the positioning plate. The elastic sheet has two stable bending states, and when the elastic sheet changes from one stable bending state to another stable bending state, it can drive the positioning plate to move along the length direction of the frame.

[0012] Preferably, the control component further includes a locking plate, which is fixedly connected to the bottom of the elastic sheet. The support frame on both sides of the locking plate is provided with multiple limiting grooves, which are arranged in the vertical direction. The top surface of the limiting groove is an inclined surface, and the locking plate can abut against the inclined surface at the top of the limiting groove. The effect is that when the locking plate moves upward, the inclined surface at the top of the limiting groove facilitates the bottom end of the locking plate and the elastic sheet to deflect to the other side.

[0013] Preferably, the limiting grooves on both sides of the card plate are staggered vertically, which has the effect that as the roller gradually wears down and the bottom end of the elastic sheet and the card plate gradually move upward, the staggered limiting grooves on both sides of the card plate facilitate the elastic sheet to change between two stable bending states.

[0014] Preferably, the scraper is detachably connected to the support base.

[0015] Preferably, the support mechanism further includes a sleeve, which is rotatably mounted on the frame and its rotation axis extends in the vertical direction. The support frame and the sleeve are slidably connected vertically. The effect is that when the plate to be cut is conveyed to the upper part of the roller, the sleeve and the roller can rotate adaptively according to the feeding direction, so that the plate and the roller maintain a rolling friction state. It is suitable for feeding in multiple directions and is convenient to use.

[0016] Preferably, the scraper has a U-shaped structure and can fit against the outer circumferential surface of the roller and the side surface near the outer circumferential surface.

[0017] The beneficial effects of the present invention by adopting the above technical solution are as follows: When cutting the board, the present invention controls the rotation of the roller, and the scraper can remove the residue adhering to the roller, avoiding the reduction in cutting accuracy caused by the accumulation of residue. At the same time, it can also protect the lower surface of the board. Furthermore, when the diameter of the roller wears to a set amount, the roller can move upward by a set distance to compensate for the wear of the roller, thereby improving the accuracy of the board placement and ensuring cutting precision. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the support mechanism of the present invention.

[0020] Figure 3 This is a cross-sectional structural diagram of the support mechanism of the present invention.

[0021] Figure 4 This is a schematic diagram of the installation structure of the limiting unit of the present invention.

[0022] Figure label:

[0023] 1. Frame; 2. Laser cutting assembly; 31. Support frame; 311. Limiting groove; 312. Slot; 32. Roller; 33. Scraper; 34. Positioning plate; 341. Protrusion; 35. Support base; 36. Elastic element; 37. Sleeve; 38. Limiting element; 391. Elastic sheet; 392. Clamping plate. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0025] like Figures 1 to 4 As shown, the sheet metal cutting device of this invention includes a frame 1, a laser cutting component 2 and multiple support mechanisms. The laser cutting component 2 is mounted on the frame 1 and can move on the frame 1 to cut the sheet metal placed on the frame 1. The multiple support mechanisms are mounted on the frame 1 in a rectangular array.

[0026] For ease of understanding, the length direction of rack 1 is defined as the left-right direction, and the width direction of rack 1 is defined as the front-back direction.

[0027] like Figures 1 to 3 As shown, the support mechanism includes a sleeve 37, a support base 35, an elastic element 36, a support frame 31, a roller 32, a scraper 33, a positioning plate 34, a limiting component, and a control component. The support frame 31 is slidably mounted on the frame 1, the roller 32 is rotatably mounted on the upper part of the support frame 31, and the scraper 33 is located at the bottom of the roller 32 and can keep in contact with the roller 32.

[0028] Specifically, the sleeve 37 is rotatably mounted on the frame 1, and its rotation axis extends vertically. The support frame 31 is slidably connected to the sleeve 37 vertically. The rotation axis of the roller 32 extends horizontally. The support frame 31 is also equipped with a drive component (not shown in the figure) for driving the roller 32 to rotate. The support seat 35 is located below the roller 32 and is slidably connected to the support frame 31 vertically. The scraper 33 is fixedly connected to the support seat 35. The elastic element 36 is connected between the support seat 35 and the support frame 31. The elastic element 36 can be a spring, and its upper and lower ends are fixedly connected to the support seat 35 and the support frame 31 respectively. The elastic element 36 can apply an upward elastic force to the support seat 35 so that the scraper 33 remains in contact with the bottom of the roller 32.

[0029] The scraper 33 has a U-shaped structure and can fit against the outer circumferential surface of the roller 32 and the side surface near the outer circumferential surface. This allows the scraper 33 to not only scrape off the residue adhering to the outer circumferential surface of the roller 32 when the roller 32 rotates, but also to scrape off the residue on the side surface near the outer circumferential surface. In addition, the scraper 33 and the support base 35 can be detachably connected, making it convenient to replace the scraper 33 after a set period of use.

[0030] The sleeve 37 is rotatably connected to the frame 1. When the plate to be cut is conveyed to the upper part of the roller 32, the sleeve 37 and the roller 32 can rotate adaptively according to the feeding direction, so that the plate and the roller 32 maintain a rolling friction state. It is suitable for feeding in multiple directions and is convenient to use.

[0031] like Figure 3 As shown, the positioning plate 34 is slidably connected to the support frame 31. The positioning plate 34 can slide in the length direction of the frame 1, and the positioning plate 34 and the support frame 31 can move synchronously in the vertical direction. The side of the positioning plate 34 is provided with a protrusion 341.

[0032] Specifically, the support frame 31 has slots 312 on both the left and right sides, and the positioning plate 34 is horizontally set. Its left and right ends are respectively movably engaged in the two slots 312, so that the positioning plate 34 can slide in the left and right directions. When the positioning plate 34 moves up and down, it can drive the support frame 31 to move up and down synchronously. Protrusions 341 are fixedly provided on both the front and rear sides of the positioning plate 34.

[0033] like Figure 2 and Figure 3 As shown, there are two limiting components, which correspond to the protrusions 341 located on the front and rear sides of the positioning plate 34, respectively. Each limiting component includes two limiting units arranged in the left-right direction. Each limiting unit includes multiple limiting members 38 evenly spaced in the up-down direction. The two limiting units are staggered vertically, that is, the multiple limiting members 38 in the left limiting unit are staggered vertically with the multiple limiting members 38 in the right limiting unit. The limiting members 38 are fixedly connected to the sleeve 37. There is a gap between the two limiting units. The end of the limiting member 38 facing the gap is provided with an inclined surface for fitting with the protrusions 341. The inclined surface on the limiting member 38 gradually tilts upward as it moves away from the gap, so that when the positioning plate 34 is controlled to move left and right, the positioning plate 34 can move upward through the inclined surface on the limiting member 38.

[0034] like Figures 2 to 4As shown, the control component includes an elastic sheet 391 and a clamping plate 392. The upper end of the elastic sheet 391 is fixedly connected to the support base 35. A through hole is provided on the positioning plate 34. The lower end of the elastic sheet 391 moves through the through hole and is located below the positioning plate 34. The elastic sheet 391 has two stable bending states. When the elastic sheet 391 changes from one stable bending state to another stable bending state, it can drive the positioning plate 34 to move along the length direction of the frame 1.

[0035] Specifically, one stable bending state of the elastic sheet 391 is that the bottom end of the elastic sheet 391 is biased to the left, and the other stable bending state is that the bottom end of the elastic sheet 391 is biased to the right. When the bottom end of the elastic sheet 391 is biased from the left to the right, it can drive the positioning plate 34 to move to the right. When the bottom end of the elastic sheet 391 is biased from the right to the left, it can drive the positioning plate 34 to move to the left.

[0036] The clamping plate 392 is fixedly connected to the bottom of the elastic sheet 391. The support frames 31 on both the left and right sides of the clamping plate 392 are provided with multiple limiting grooves 311. The multiple limiting grooves 311 are arranged in the vertical direction. The top surface of the limiting groove 311 is an inclined surface. The inclined surface gradually tilts upward as it approaches the elastic sheet 391. When the bottom end of the elastic sheet 391 is in a stable bending state biased to the left, the clamping plate 392 can abut against the inclined surface at the top of the limiting groove 311 in the left direction. When the bottom end of the elastic sheet 391 is in a stable bending state biased to the right, the clamping plate 392 can abut against the inclined surface at the top of the limiting groove 311 in the right direction. The limiting grooves 311 on the left and right sides of the clamping plate 392 are staggered vertically.

[0037] After the material to be cut is placed on several rollers 32, the laser cutting assembly 2 can be controlled to cut the material. After the cutting is completed, the rollers 32 are controlled to rotate. At this time, the scraper 33, which is in contact with the bottom of the rollers 32, can scrape off the residue adhering to the rollers 32.

[0038] After the scraper 33 scrapes the outer circumference of the roller 32 for a long time, it will cause wear on the roller 32 and reduce the diameter of the roller 32. When the roller 32 is severely worn, placing the plate to be cut on the roller 32 will cause a large positional deviation of the plate and will have a significant impact on the cutting accuracy.

[0039] In this embodiment, initially, the locking plate 392 abuts against the inclined surface at the top of the left limiting groove 311, and the protrusion 341 on the positioning plate 34 is located between the two limiting members 38 on the left. As the diameter of the roller 32 gradually decreases, the elastic member 36 in a compressed state pushes the support seat 35 to move upward. The support seat 35 drives the elastic piece 391 and the locking plate 392 to move upward as well. When the locking plate 392 moves upward, under the action of the inclined surface at the top of the left limiting groove 311, it pushes the locking plate 392 to move to the right, and causes the bottom end of the elastic piece 391 to gradually deflect to the right. At the same time, it can drive the positioning plate 34 to move to the right. When the roller 32 wears a set amount, the bottom end of the elastic piece 391 will deflect to the right to exceed the critical value, and the elastic piece 391 will move inward. Under the action of the elastic force, the bottom end of the elastic sheet 391 is changed to a stable bending state biased to the right. The clamping plate 392 will stop against the inclined surface at the top of the right limiting groove 311, and at the same time, it will drive the positioning plate 34 to continue to move to the right. During the rightward movement of the positioning plate 34 and the protrusion 341 provided on the positioning plate 34, the positioning plate 34 will move upward due to the cooperation of the protrusion 341 and the inclined surface on the corresponding right limiting member 38. The upward movement of the positioning plate 34 will drive the support frame 31 and the roller 32 installed on the support frame 31 to move upward synchronously. When the protrusion 341 on the positioning plate 34 moves to the upper part of the corresponding right limiting member 38, the support frame 31 and the roller 32 installed on the support frame 31 will move up a set distance.

[0040] Similarly, as the roller 32 continues to wear and its diameter continues to decrease, the elastic sheet 391 will change from a stable bending state with the bottom end deflected to the right to a stable bending state with the bottom end deflected to the left, while continuing to drive the roller 32 to move upward by a set distance.

[0041] As can be seen from the above, when the diameter wear of the roller 32 reaches the set amount, the elastic plate 391 will change between two stable bending states and can drive the roller 32 to move upward by a set distance to compensate for the wear of the roller 32, thereby improving the accuracy of the plate placement and ensuring the cutting precision.

[0042] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A sheet metal cutting device, comprising a frame and a laser cutting assembly mounted on the frame, characterized in that, It also includes multiple support mechanisms, which are installed on the frame in an array. Each support mechanism includes a support frame, rollers, scrapers, positioning plates, limiting components, and control components. The support frame is slidably installed on the frame, the rollers are rotatably installed on the upper part of the support frame, the scraper is located at the bottom of the rollers and can keep in contact with the rollers, the positioning plate is slidably connected to the support frame, the positioning plate can slide in the length direction of the frame, and the positioning plate and the support frame can move synchronously in the vertical direction. The side of the positioning plate is provided with a protrusion. The limiting assembly includes two limiting units arranged along the length of the frame. Each limiting unit includes multiple limiting members arranged at intervals in the vertical direction. The two limiting units are staggered vertically and have a gap between them. The end of the limiting member facing the gap has an inclined surface for engaging with the protrusion. The inclined surface on the limiting member gradually tilts upward as it moves away from the gap, so that when the positioning plate moves left or right, the inclined surface on the limiting member can cause the positioning plate to move upward. When the diameter of the roller wears to a set amount, the control component can control the positioning plate to move along the length of the frame; The support mechanism also includes a support base and an elastic element. The support base is located below the roller and is slidably connected to the support frame. The scraper is fixedly connected to the support base. The elastic element is connected between the support base and the support frame and can apply an upward elastic force to the support base. The control component includes an elastic sheet and a clamping plate. The upper end of the elastic sheet is fixedly connected to the support base, and the lower end moves through the positioning plate. The elastic sheet has two stable bending states. When the elastic sheet changes from one stable bending state to another stable bending state, it can drive the positioning plate to move along the length of the frame. The clamping plate is fixedly connected to the bottom of the elastic sheet. Multiple limiting grooves are provided on the support frames on both sides of the clamping plate. The multiple limiting grooves are arranged in the vertical direction. The top surface of the limiting groove is an inclined surface. The clamping plate can abut against the inclined surface at the top of the limiting groove. The limiting grooves on both sides of the clamping plate are staggered vertically.

2. The sheet metal cutting device according to claim 1, characterized in that, The scraper and the support base are detachably connected.

3. The sheet metal cutting device according to claim 1, characterized in that, The support mechanism also includes a sleeve, which is rotatably mounted on the frame and its rotation axis extends in the vertical direction. The support frame and the sleeve are slidably connected vertically.

4. The sheet metal cutting device according to claim 1, characterized in that, The scraper has a U-shaped structure and can fit against the outer circumference of the roller and the side near the outer circumference.

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