A multi-angle laser cutting machine loading and unloading device

Abstract

This invention relates to the field of laser cutting technology, specifically to a multi-angle laser cutting machine loading and unloading device, comprising: two parallel guide rails fixedly connected to the upper surface of a base, with positioning grooves formed on the surface of the guide rails; a material rack comprising multiple strip plates distributed at equal intervals; and a conveying assembly comprising multiple transmission belts distributed at equal intervals, with the multiple transmission belts and multiple strip plates spaced apart. The advantages are: by setting two parallel guide rails on the surface of the base, with downwardly recessed positioning grooves on the guide rail surfaces, and a conveying assembly positioned between the ends of the two guide rails, the material rack can move downwards when it slides to correspond to the positioning grooves. When the sheet metal workpiece is conveyed to the top of the material rack via the conveyor belt, it can rest on the upper surface of the conveying assembly for transport, preventing scratches on the lower surface of the sheet metal workpiece. This device is small in size, low in equipment cost, and avoids the risk of workpieces falling.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, specifically to a loading and unloading device for a multi-angle laser cutting machine. Background Technology

[0002] A laser cutting machine uses a laser emitted from a laser source, which is focused into a high-power-density laser beam through an optical path system. As the relative position of the beam and the workpiece moves, a kerf is eventually formed in the material, thus achieving the purpose of cutting. The laser source can usually move and rotate, and can cut the workpiece from different positions and angles.

[0003] In the prior art, when loading and unloading large sheet metal workpieces, in order to avoid scratching the surface of the workpiece during movement, external robotic arms, suction cup assemblies, and bracket structures are generally used for movement and loading / unloading.

[0004] However, the robotic arm itself occupies a large space, and its rotation further increases the overall size and cost of the loading and unloading device. Furthermore, insufficient suction force from the suction cups can cause workpieces to fall during loading and unloading, posing a safety hazard. Therefore, this invention proposes a multi-angle laser cutting machine loading and unloading device to solve these problems. Summary of the Invention

[0005] The purpose of this invention is to provide a loading and unloading device for a multi-angle laser cutting machine, so as to solve the safety hazard of workpieces falling when loading and unloading with the help of a robotic arm and a suction cup, as mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-angle laser cutting machine loading and unloading device, comprising:

[0007] The base has two parallel guide rails fixedly connected to its upper surface. The guide rails have positioning grooves on their surfaces, and one inner wall of the positioning groove is inclined.

[0008] A material rack is slidably installed between two guide rails. The material rack includes multiple strip plates distributed at equal intervals. When the material rack slides above the positioning groove, it moves downward under its own weight.

[0009] The conveying assembly is disposed between the ends of two guide rails. The conveying assembly includes multiple drive belts distributed at equal intervals, and multiple drive belts and multiple strip plates are distributed at intervals. Multiple support cylinders distributed linearly at equal intervals are installed on the inner side of the drive belts. When the material rack moves down, the drive belt passes through the gap between the two strip plates from bottom to top.

[0010] Preferably, connecting columns are provided at both ends of the material placing rack, and a plurality of the strip plates are fixedly connected to the connecting columns. Rolling wheels are rotatably installed on both side surfaces of the material placing rack. An installation frame is installed outside the rolling wheels, and the installation frame is fixed on the side surface of the material placing rack. The rolling wheels roll along the length direction of the guide rail on the upper surface of the guide rail.

[0011] Preferably, an annular groove is formed in the middle of the rolling wheel. A rib plate is fixedly connected to the middle of the upper surface of the guide rail. The annular groove is stuck outside the rib plate. An inclined chamfer is provided at the upper corner of the inner wall on the other side of the positioning groove. A cushion plate is provided between the guide rail and the base.

[0012] Preferably, a square column is fixedly connected to the middle of one of the connecting columns. A limiting block is movably sleeved outside the square column. A sliding groove for the square column to pass through is formed through the middle of the limiting block. Avoidance grooves corresponding to the plurality of strip plates are formed on the upper surface of the limiting block. A pushing block fixedly connected to the base is provided directly below the limiting block. The lower end surface of the limiting block and the upper end surface of the pushing block are both inclined.

[0013] Preferably, a support vertical frame is installed below the support cylinder. The lower end of the support vertical frame is fixedly connected to a support bottom plate, and the support bottom plate is fixedly installed on the upper surface of the base. The length of the transmission belt is less than the distance between the two connecting columns.

[0014] Preferably, double-shaft extension motors are installed on the upper surfaces at both ends of the base. Reeling rollers are fixedly installed at both ends of the output shafts of the double-shaft extension motors. Steel wire ropes are wound outside the reeling rollers. The steel wire ropes are fixedly connected to the ends of the strip plates at the corresponding positions. A support shaft seat is sleeved outside the output shaft of the double-shaft extension motor through a bearing, and the support shaft seat is fixed on the upper surface of the base.

[0015] Preferably, a conveyor belt is provided on the upper side of one end of the base. A support frame located at the front end of the conveyor belt is fixedly connected to the upper surface of one end of the base. Two symmetrically distributed guide plates are slidably installed on the upper surface of the support frame, and the guide plates are in a shape of "丿". The plate workpiece conveyed by the conveyor belt slides through the upper surface of the support frame and then falls onto the upper side of the material placing rack and fits with the upper surface of the conveying component.

[0016] Preferably, the support frame is in a shape of "匚" with the opening facing downwards. A double-headed stud is rotatably installed inside the support frame. A sliding block is fixedly connected to the lower edge of the guide plate. A limiting through groove corresponding to the sliding block is formed on the surface of the support frame. The sliding block penetrates through the limiting through groove from top to bottom and is sleeved outside the end of the double-headed stud through a thread.

[0017] Preferably, the two ends of the double-ended stud are movably inserted through the two side walls of the support frame via bearings, and a handle is fixedly connected to one end of the double-ended stud.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This invention features two parallel guide rails on the base surface, each with a downwardly recessed positioning groove. One side of the positioning groove has an inclined inner wall. A material placement rack is slidably mounted between the two guide rails, and a conveying assembly is positioned between the ends of the two guide rails. When the material placement rack slides to correspond with the positioning groove, it can move downwards. At this time, the conveying assembly can pass through the material placement rack from bottom to top. When the sheet metal workpiece is conveyed to the top of the material placement rack by the conveyor belt, it can rest on the upper surface of the conveying assembly for transport, preventing scratches on the lower surface of the workpiece. The material placement rack can then move upwards during horizontal movement until it completely detaches from the conveying assembly. During this process, the sheet metal workpiece gradually approaches the material placement rack until it is completely placed on the upper surface. Loading and unloading are achieved through the horizontal movement of the material placement rack. Compared to existing technologies, this device is smaller, has lower equipment costs, and avoids the risk of workpieces falling, making it safer to use. Attached Figure Description

[0020] Figure 1 This is a side sectional view of the overall structure of the present invention;

[0021] Figure 2 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0022] Figure 3 This is a three-dimensional schematic diagram of the material rack structure of the present invention;

[0023] Figure 4 This is a three-dimensional schematic diagram of the conveying component structure of the present invention;

[0024] Figure 5 This is a schematic diagram showing the structural cooperation between the material rack and the conveying assembly of the present invention;

[0025] Figure 6 This is a three-dimensional schematic diagram of the guide rail structure of the present invention;

[0026] Figure 7 This is a three-dimensional schematic diagram of the rolling wheel structure of the present invention;

[0027] Figure 8 This is a schematic diagram showing the separation of the limiting block and connecting column structure of the present invention;

[0028] Figure 9 This is a three-dimensional schematic diagram of the support frame structure of the present invention;

[0029] Figure 10 This is a three-dimensional schematic diagram of the winding roller structure of the present invention.

[0030] In the diagram: 1. Base; 101. Pushing block; 2. Material rack; 21. Strip plate; 22. Connecting column; 221. Square column; 23. Rolling wheel; 231. Annular groove; 232. Mounting frame; 25. Limiting block; 251. Sliding groove; 252. Clearance groove; 3. Conveying assembly; 31. Drive belt; 32. Support cylinder; 33. Support frame; 34. Support base plate; 4. Guide rail; 41. Positioning groove; 42. Rib plate; 43. Chamfer; 44. Pad plate; 5. Support frame; 51. Guide plate; 511. Sliding block; 52. Double-ended stud; 521. Handle; 53. Limiting through groove; 6. Dual-shaft extension motor; 61. Rewinding roller; 62. Steel wire rope; 63. Support shaft seat; 7. Conveyor belt; 8. Sheet metal workpiece. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not 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 limitations on the invention. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.

[0035] Please see Figures 1 to 10 The present invention provides a technical solution:

[0036] Example 1: A multi-angle laser cutting machine loading and unloading device includes: a base 1, a material rack 2 and a conveying assembly 3, wherein a sheet metal workpiece 8 is placed on the material rack 2.

[0037] Specifically, two parallel guide rails 4 are fixedly connected to the upper surface of the base 1. Positioning grooves 41 are formed on the surface of the guide rails 4, and one inner wall of the positioning groove 41 is inclined to... Figure 1 Based on this, a laser cutting machine (not shown in the figure) is also provided on the left side of the base 1. The laser cutting machine is a structure known in the prior art and will not be described in detail here. The material rack 2 can slide to the left along the length of the guide rail 4, which will move the plate workpiece 8 to the laser cutting head of the laser cutting machine. After the cutting work is completed, the plate workpiece 8 will be moved to the right to separate from the laser cutting machine, thereby realizing the loading and unloading process.

[0038] Secondly, the material rack 2 is slidably installed between two guide rails 4. The material rack 2 includes multiple strip plates 21 distributed at equal intervals. There is a gap between each pair of adjacent strip plates 21 so that the debris generated by the laser during cutting can fall down. In addition, the upper side of the strip plate 21 is set with a sawtooth structure, which can improve the stability of the plate workpiece 8 after it is placed on the upper surface of the material rack 2, and at the same time reduce the reflection of the laser, thereby improving the cutting accuracy. When the material rack 2 slides above the positioning groove 41, it moves down under its own weight.

[0039] Furthermore, the conveying assembly 3 is disposed between the ends of the two guide rails 4. The conveying assembly 3 includes multiple transmission belts 31 distributed at equal intervals, and the multiple transmission belts 31 and multiple strip plates 21 are spaced apart. Multiple support cylinders 32 distributed linearly at equal intervals are installed on the inner side of the transmission belts 31. Figure 5As shown, the support cylinder 32 can support and shape the transmission belt 31. When the sheet metal workpiece 8 rests on the upper surface of the transmission belt 31 due to gravity, the support cylinder 32 can support the sheet metal workpiece 8. At this time, the sheet metal workpiece 8 does not contact the strip plate 21. When the sheet metal workpiece 8 moves, the transmission belt 31 can transport it accordingly. The lower surface of the sheet metal workpiece 8 is not subjected to sliding friction, thereby avoiding the lower surface of the sheet metal workpiece 8 being scratched by the strip plate 21. Especially for the serrated strip plate 21, the lower surface of the sheet metal workpiece 8 can be well protected. When the material rack 2 moves down, the transmission belt 31 passes through the gap between the two strip plates 21 from bottom to top, ensuring that the sheet metal workpiece 8 can first rest on the upper side of the transmission belt 31 rather than the upper side of the strip plate 21.

[0040] To enable the transmission belt 31 to pass through the gap between two adjacent strip plates 21 from bottom to top, this application further includes connecting posts 22 at both ends of the material rack 2. Multiple strip plates 21 are fixedly connected to the connecting posts 22. The connecting posts 22 are used to fix the multiple strip plates 21 together, thereby ensuring the strength of the entire material rack 2. Rolling wheels 23 are rotatably mounted on both sides of the material rack 2. The rolling wheels 23 roll along the length of the guide rail 4 on the upper surface of the guide rail 4, thereby moving the material rack 2. When the rolling wheel 23 corresponds to the positioning groove 41, the rolling wheel 23 can roll downwards into the inner cavity of the positioning groove 41. At this time, the material rack 2 will move downwards, ensuring that when the material rack 2 moves to the designated position, the transmission belt 31 can pass through the gap between two adjacent strip plates 21 from bottom to top. Furthermore, as... Figure 3 As shown, at least three rollers 23 are provided, and the spacing between any two adjacent rollers 23 is not the same, such as... Figure 6 As shown, the number of positioning grooves 41 corresponds to the number of rolling wheels 23. During the translation process, if only one rolling wheel 23 corresponds to one positioning groove 41, the material rack 2 will not move downward. The material rack 2 will only move downward when all rolling wheels 23 correspond to all positioning grooves 41. In addition, a mounting bracket 232 is installed on the outside of the rolling wheel 23. The mounting bracket 232 is fixed to the side of the material rack 2 and is used to install and position the rolling wheel 23. A pad 44 is also provided between the guide rail 4 and the base 1.

[0041] To prevent the material rack 2 from shifting, this application also features an annular groove 231 in the middle of the rolling wheel 23, a rib 42 fixedly connected to the middle of the upper surface of the guide rail 4, the annular groove 231 being engaged with the outer side of the rib 42, and a chamfer 43 at the upper corner of the inner wall of the other side of the positioning groove 41. Figure 7 and Figure 6As shown, the annular groove 231 and the rib plate 42 cooperate to prevent the material rack 2 from shifting along its own width direction and falling off the guide rail 4. The chamfer 43 is set to prevent the rolling wheel 23 from being stuck by the vertical inner wall on the other side of the positioning groove 41 during the rolling process.

[0042] To prevent the sheet metal workpiece 8 from detaching from the material rack 2 during movement, this application further includes a square column 221 fixedly connected to the middle of a connecting column 22. A limiting block 25 is movably fitted on the outer side of the square column 221, and a sliding groove 251 is provided through the middle of the limiting block 25 for the square column 221 to pass through. Figure 8 As shown, the vertical height of the sliding groove 251 is greater than the vertical height of the square column 221. The limiting block 25 can slide up and down a certain distance in the vertical direction. When the limiting block 25 moves upward: the upper surface of the limiting block 25 is higher than the upper surface of the strip plate 21 and the transmission belt 31. The limiting block 25 can position the plate workpiece 8, preventing the plate workpiece 8 from moving too far due to its own inertia when moving on the upper surface of the transmission belt 31, or even detaching from the material rack 2. When the limiting block 25 moves downward... When the limit block 25 is in operation, its lower surface is flush with or lower than the upper surface of the strip plate 21, thus preventing obstruction of the laser cutting head's movement during cutting. A clearance groove 252, corresponding one-to-one with multiple strip plates 21, is provided on the upper surface of the limit block 25 to prevent collision between the limit block 25 and the strip plates 21. A push block 101, fixedly connected to the base 1, is located directly below the limit block 25. Both the lower end face of the limit block 25 and the upper end face of the push block 101 are inclined. Figure 1 As shown, when the material rack 2 moves to the right to the designated position and moves down, the jacking block 101 can push the limit block 25 to move up. When the material rack 2 moves to the left, the limit block 25 separates from the jacking block 101, and the limit block 25 can automatically move down under its own weight.

[0043] To prevent the transmission belt 31 from colliding with the connecting column 22, this application also includes a support frame 33 installed below the support cylinder 32. A support base plate 34 is fixedly connected to the lower end of the support frame 33, and the support base plate 34 is fixedly installed on the upper surface of the base 1 to support and position the support cylinder 32 and the transmission belt 31. The length of the transmission belt 31 is less than the distance between the two connecting columns 22. Figure 2 and Figure 5 Since the material rack 2 moves downward along the inclined direction of the inner wall of the positioning groove 41 when it moves downward, a certain space needs to be left between the end of the transmission belt 31 and the connecting column 22 to avoid collision between the two.

[0044] To drive the material rack 2 to move, the present application further has double-shaft motors 6 installed on the upper surfaces at both ends of the base 1. Both ends of the output shaft of the double-shaft motor 6 are fixedly installed with winding rollers 61. A steel wire rope 62 is wound around the outer side of the winding roller 61. The steel wire rope 62 is fixedly connected to the end of the strip plate 21 at the corresponding position. As Figure 10 shown, when the double-shaft motor 6 operates, it drives the winding roller 61 to rotate and winds the steel wire rope 62, so as to be able to pull the material rack 2 to move. It should be noted that the two double-shaft motors 6 of this device are respectively used to pull the material rack 2 to slide horizontally to the left and right sides (taking Figure 1 the left and right sides as a reference). A support shaft seat 63 is sleeved on the outer side of the output shaft of the double-shaft motor 6 through a bearing, and the support shaft seat 63 is fixed on the upper surface of the base 1 for supporting and positioning the winding roller 61.

[0045] To convey the sheet metal workpiece 8, the present application further has a conveyor belt 7 provided on the upper side of one end of the base 1. A support frame 5 located at the front end of the conveyor belt 7 is fixedly connected to the upper surface of one end of the base 1. Two symmetrically distributed guide plates 51 are slidably installed on the upper surface of the support frame 5, and the guide plates 51 are in a "丿" shape. The conveyor belt 7 conveys the sheet metal workpiece 8 to slide through the upper surface of the support frame 5 and then fall onto the upper side of the material rack 2 and fit with the upper surface of the conveying component 3. When the sheet metal workpiece 8 is conveyed to the front end of the conveyor belt 7 and gradually disengages from the conveyor belt 7, the sheet metal workpiece 8 first rests on the upper surface of the support frame 5. Therefore, at least one layer of flexible layer needs to be provided on the upper surface of the support frame 5. The width of the support frame 5 itself is relatively small. After the sheet metal workpiece 8 passes through the upper part of the support frame 5, it can rest on the upper surface of the conveyor belt 31. During this process, the guide plate 51 can be used to guide the sheet metal workpiece 8.

[0046] To adjust the distance between the two guide plates 51, the support frame 5 of the present application is set in a "匚" shape with the opening facing downwards. A double-headed screw 52 is rotatably installed inside the support frame 5. The lower edge of the guide plate 51 is fixedly connected with a sliding block 511. A limiting through groove 53 corresponding to the sliding block 511 is opened on the surface of the support frame 5. The sliding block 511 penetrates through the limiting through groove 53 from top to bottom and is threadedly sleeved on the outer side of the end of the double-headed screw 52. When the double-headed screw 52 rotates, it drives the two guide plates 51 to move simultaneously and in opposite directions through the thread, so as to be able to adjust the distance between the two guide plates 51 to adapt to sheet metal workpieces 8 of different sizes.

[0047] To drive the double-headed screw 52 to rotate, the present application further has that both ends of the double-headed screw 52 respectively pass through the two side walls of the support frame 5 through bearings. One end of the double-headed screw 52 is fixedly connected with a handle 521 to facilitate the staff to rotate the double-headed screw 52.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-angle laser cutting machine feeding and discharging device, characterized in that: include: The base (1) has two parallel guide rails (4) fixedly connected to its upper surface. The guide rails (4) have a positioning groove (41) on their surface, and one side of the inner wall of the positioning groove (41) is inclined. The material rack (2) is slidably installed between two guide rails (4). The material rack (2) includes multiple strip plates (21) distributed at equal intervals. When the material rack (2) slides above the positioning groove (41), it moves downward due to its own weight. The conveying assembly (3) is located between the ends of two guide rails (4). The conveying assembly (3) includes multiple transmission belts (31) that are evenly spaced, and multiple transmission belts (31) and multiple strip plates (21) are spaced apart. Multiple support cylinders (32) that are evenly spaced linearly distributed are installed on the inner side of the transmission belts (31). When the material rack (2) moves down, the transmission belts (31) pass through the gap between the two strip plates (21) from bottom to top. Both ends of the material rack (2) are provided with connecting columns (22), and multiple strip plates (21) are fixedly connected to the connecting columns (22). At least three rolling wheels (23) are rotatably installed on both sides of the material rack (2), and the distance between any two adjacent rolling wheels (23) is different. The number of positioning grooves (41) corresponds to the number of rolling wheels (23). During the translation process of the material rack (2), if only one rolling wheel (23) corresponds to one positioning groove (41), the material rack (2) will not move down. The material rack (2) will move down only when all the rolling wheels (23) correspond to all the positioning grooves (41) one by one. An mounting bracket (232) is installed on the outside of the rolling wheel (23). The mounting bracket (232) is fixed on the side of the material rack (2). The rolling wheel (23) rolls on the upper surface of the guide rail (4) along the length direction of the guide rail (4).

2. The multi-angle laser cutting machine feeding and discharging device according to claim 1, characterized in that: The rolling wheel (23) has an annular groove (231) in the middle. The guide rail (4) has a rib plate (42) fixedly connected to the middle of its upper surface. The annular groove (231) is stuck on the outside of the rib plate (42). The upper corner of the inner wall of the other side of the positioning groove (41) has a chamfer (43). A pad plate (44) is provided between the guide rail (4) and the base (1).

3. The multi-angle laser cutting machine feeding and discharging device according to claim 1, characterized in that: A square column (221) is fixedly connected to the middle of a connecting column (22). A limiting block (25) is movably sleeved on the outer side of the square column (221). A sliding groove (251) for the square column (221) to pass through is opened through the middle of the limiting block (25). An avoidance groove (252) corresponding to a plurality of strip plates (21) is opened on the upper surface of the limiting block (25). A top moving block (101) fixedly connected to the base (1) is provided directly below the limiting block (25). The lower end face of the limiting block (25) and the upper end face of the top moving block (101) are both inclined.

4. The loading and unloading device for a multi-angle laser cutting machine according to claim 1, characterized in that: A support stand (33) is installed below the support cylinder (32). The lower end of the support stand (33) is fixedly connected to a support bottom plate (34), and the support bottom plate (34) is fixedly installed on the upper surface of the base (1). The length of the transmission belt (31) is less than the distance between the two connecting columns (22).

5. The loading and unloading device for a multi-angle laser cutting machine according to claim 1, characterized in that: Biaxial extension motors (6) are installed on the upper surfaces at both ends of the base (1). Both ends of the output shafts of the biaxial extension motors (6) are fixedly installed with winding rollers (61). Steel wire ropes (62) are wound around the outer sides of the winding rollers (61). The steel wire ropes (62) are fixedly connected to the ends of the strip plates (21) at corresponding positions. A support shaft seat (63) is sleeved on the outer side of the output shaft of the biaxial extension motor (6) through a bearing, and the support shaft seat (63) is fixed on the upper surface of the base (1).

6. The loading and unloading device for a multi-angle laser cutting machine according to claim 1, characterized in that: A conveyor belt (7) is arranged on the upper side at one end of the base (1). A support frame (5) located at the front end of the conveyor belt (7) is fixedly connected to the upper surface at one end of the base (1). Two symmetrically distributed guide plates (51) are slidably installed on the upper surface of the support frame (5), and the guide plates (51) are in the shape of "丿". The sheet workpiece (8) conveyed by the conveyor belt (7) slides through the upper surface of the support frame (5) and then falls onto the upper side of the material placement rack (2) and fits with the upper surface of the conveying component (3).

7. The loading and unloading device for a multi-angle laser cutting machine according to claim 6, characterized in that: The support frame (5) is arranged in a "匚" shape with an open bottom. A double-headed stud (52) is rotatably installed inside the support frame (5). The lower edge of the guide plate (51) is fixedly connected to a sliding block (511). A limiting through groove (53) corresponding to the sliding block (511) is formed on the surface of the support frame (5). The sliding block (511) penetrates through the limiting through groove (53) from top to bottom and is threadedly sleeved on the outer side of the end of the double-headed stud (52).

8. The loading and unloading device for a multi-angle laser cutting machine according to claim 7, characterized in that: Both ends of the double-headed stud (52) respectively pass through the two side walls of the support frame (5) through bearings. One end of the double-headed stud (52) is fixedly connected to a handle (521).

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