Automatic cutting device

Abstract

The utility model discloses an automatic cutting device which comprises a mounting plate, a main cutting gun and an auxiliary cutting gun, a first support assembly is fixed at the bottom of the mounting plate, the main cutting gun is fixed on the first support assembly, a second support assembly is rotatably mounted at the bottom of the mounting plate through a rotating shaft, and the auxiliary cutting gun is fixed on the second support assembly. The auxiliary cutting gun and the second support assembly can be driven by a rotation driving device to rotate around the rotating shaft, and the initial rotation direction of the auxiliary cutting gun is opposite to the advancing direction of the main cutting gun. The moving track of the main cutting gun is defined as the X axis, the moving track perpendicular to the X axis is defined as the Y axis, and the auxiliary cutting gun deflects towards the main cutting gun, so that an included angle theta larger than zero is formed between the connecting line between the initial position of the auxiliary cutting gun and the rotating shaft and the Y axis. According to the auxiliary cutting gun preheating device, it can be ensured that the auxiliary cutting gun obtains a certain relatively static preheating time, so that the success rate of waste edge cutting is increased, and efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of automated cutting machine technology, and in particular to an automatic cutting device. Background Technology

[0002] During the steel rolling process, steel billets often have irregular and uneven edges, typically containing scrap material less than 200 mm wide. During trimming, this scrap material may curl upwards due to its excessive length, damaging cutting equipment and even endangering operator safety. Previously, steel mills commonly used manual cutting to cut the scrap material into sections for easy cleaning. However, this method is inefficient, labor-intensive, and poses significant safety hazards, severely hindering the automation and intelligentization of production. Therefore, promoting the automation of the billet cutting process to achieve efficient and safe scrap material handling has become crucial for steel mills to improve production efficiency, reduce labor intensity, and ensure personnel safety.

[0003] Currently, automatic scrap cutting devices exist on the market. These devices add a CNC axis control unit in front of the main cutting gun to control the linear motion of the scrap cutting gun along the Y-axis, thus achieving automatic scrap cutting. While this device has a simple structure, the continuous forward movement of both the main and scrap cutting guns along the X-axis prevents the scrap cutting gun from achieving sufficient preheating at a relatively fixed position on the steel plate. This results in low success rate and efficiency in scrap cutting, failing to meet the actual needs of customers on-site. Therefore, it is necessary to improve the existing technology to overcome its shortcomings. Utility Model Content

[0004] The problem to be solved by this utility model is to provide an automatic cutting device to overcome the shortcomings of low success rate and low efficiency of existing automatic waste cutting devices in cutting off waste edges.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an automatic cutting device, including: a mounting plate, a main cutting gun and a secondary cutting gun. A first support assembly is fixed to the bottom of the mounting plate, and the main cutting gun is fixed to the first support assembly. A second support assembly is rotatably mounted on the bottom of the mounting plate through a rotating shaft. The secondary cutting gun is fixed to the second support assembly, and the secondary cutting gun and the second support assembly can be driven by a rotary drive device to rotate around the rotating shaft. The initial rotation direction of the secondary cutting gun is opposite to the direction of travel of the main cutting gun. The trajectory of the main cutting gun is defined as the X-axis, and the Y-axis is defined as the axis that is in the same horizontal plane and perpendicular to each other. The secondary cutting gun is deflected toward the main cutting gun so that the line connecting the starting position of the secondary cutting gun and the rotating shaft forms an angle θ greater than zero with the Y-axis.

[0006] As a further improvement of this utility model, the included angle θ is between 0 and 10°.

[0007] As a further improvement of this utility model, the direction in which the main cutting gun travels is defined as forward, and the secondary cutting gun is located behind the main cutting gun.

[0008] As a further improvement of this utility model, both the main cutting gun and the auxiliary cutting gun are distributed in the vertical direction, and when the auxiliary cutting gun is rotated until the line connecting it and the rotating shaft is parallel to the Y-axis, the center line of the auxiliary cutting gun coincides with the center line of the main cutting gun in the X-axis direction.

[0009] As a further improvement of this utility model, the cutting nozzle of the main cutting gun is at the same height as the cutting nozzle of the auxiliary cutting gun.

[0010] As a further improvement of this utility model, the rotary drive device includes a geared motor and a gear set that is connected between the geared motor and the rotating shaft. The geared motor drives the rotating shaft through the gear set to drive the second support assembly and the auxiliary cutting gun to rotate.

[0011] As a further improvement of this utility model, the auxiliary cutting gun can move up and down on the mounting plate.

[0012] As a further improvement of this utility model, the automatic cutting device also includes a lifting drive device fixed on the mounting plate. A lifting bracket is slidably mounted on the mounting plate, and the rotating shaft is rotatably mounted on the lifting bracket. The lifting drive device is used to drive the lifting bracket to drive the rotating shaft, the second bracket assembly, and the auxiliary cutting gun to perform lifting movements.

[0013] As a further improvement of this utility model, the second support assembly includes a second horizontal plate fixedly connected to the rotating shaft, a slider slidably connected to the second horizontal plate, a second adapter block fixedly connected to the slider, and a second shaft clamp fixedly connected to the second adapter block. The auxiliary cutting gun is fixedly mounted on the second shaft clamp, and a locking mechanism for locking the slider is provided on the second horizontal plate.

[0014] As a further improvement of this utility model, both the first bracket assembly and the second bracket assembly are arranged in an L-shape with the mounting plate.

[0015] The beneficial effects of this utility model are as follows: This utility model provides an automatic cutting device. By rotatably mounting the secondary cutting gun on the mounting plate, it can be driven by a rotary drive device to rotate around the axis. At the same time, the secondary cutting gun is deflected towards the main cutting gun so that the starting position of the secondary cutting gun maintains an angle with the Y-axis. In the initial stage of the arc motion of the secondary cutting gun, i.e. the preheating stage, the relative position of the cutting nozzle of the secondary cutting gun and the scrap steel plate being cut remains approximately unchanged. This ensures that the secondary cutting gun can obtain a certain amount of preheating time with relative stillness, thereby improving the success rate of scrap cutting and significantly improving efficiency. It reduces the increased cost caused by manual reprocessing due to cutting failures. It realizes automated scrap cutting of steel plates of different thicknesses, has strong adaptability and good versatility, and is simple to operate. At the same time, it improves the cutting process of steel plates and the quality of finished plates. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the automatic cutting device of this utility model;

[0018] Figure 2 A perspective view of the automatic cutting device of this utility model after the protective cover has been removed;

[0019] Figure 3 This is a bottom view of the automatic cutting device of this utility model;

[0020] Figure 4 This is a perspective view of the auxiliary cutting gun and the second support assembly in the automatic cutting device of this utility model;

[0021] Figure 5 This is a schematic diagram of the movement trajectories of the main cutting gun and the auxiliary cutting gun in the automatic cutting device of this utility model.

[0022] Referring to the accompanying drawings, the following explanations are provided:

[0023] 1. Mounting plate; 2. Main cutting gun; 3. Secondary cutting gun; 4. Rotating shaft; 5. First support assembly; 6. Second support assembly; 601. Second horizontal plate; 602. Slider; 603. Second adapter block; 604. Second shaft clamp; 7. Gear motor; 8. Gear set; 9. Lifting drive device; 10. Lifting bracket. Detailed Implementation

[0024] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0025] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0027] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0028] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0029] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0030] This utility model provides an automatic cutting device that can be applied to a gantry CNC cutting machine. When the machine body of the gantry CNC cutting machine travels along the track, it drives the automatic cutting device to perform cutting operations.

[0031] See Figures 1 to 5The automatic cutting device of this utility model includes: a mounting plate 1, a main cutting gun 2 and a secondary cutting gun 3, wherein the mounting plate 1 is fixed vertically on the lifting body of the machine body, and the automatic cutting device can be driven by the lifting body of the machine body to move up and down.

[0032] Furthermore, a first support assembly 5 is fixed to the bottom of the mounting plate 1, and the first support assembly 5 is L-shaped with the mounting plate 1. The main cutting gun 2 is fixed vertically on the first support assembly 5. In addition, a second support assembly 6 is rotatably mounted on the bottom of the mounting plate 1 via a pivot 4. The second support assembly 6 is located on one side of the first support assembly 5, and the second support assembly 6 is also L-shaped with the mounting plate 1. The auxiliary cutting gun 3 is fixed vertically on the second support assembly 6.

[0033] The automatic cutting device of this utility model also includes a rotary drive device, which drives the rotating shaft 4 to rotate and simultaneously drives the second support assembly 6 and the auxiliary cutting gun 3 to rotate around the rotating shaft 4.

[0034] In this configuration, the main cutting gun 2 is positioned in the forward direction, while the secondary cutting gun 3 is positioned behind the main cutting gun 2.

[0035] It should be noted that during the cutting process, the secondary cutting gun 3 initially rotates in the opposite direction to the main cutting gun 2. For example, taking... Figure 5 With the coordinate system as a reference, the movement trajectory of the main cutting gun 2 is defined as the X-axis, and the axis that is in the same horizontal plane and perpendicular to each other is defined as the Y-axis. When the body of the gantry CNC cutting machine drives the automatic cutting device to move along the positive direction of the X-axis, the auxiliary cutting gun 3 makes a clockwise circular motion when cutting.

[0036] It is worth mentioning that the secondary cutting gun 3 is deflected toward the main cutting gun 2 so that the line connecting the starting position of the secondary cutting gun 3 and the rotating shaft 4 forms an angle θ greater than zero with the Y-axis.

[0037] During the process of cutting the scrap edges of the steel plate, the automatic cutting device moves along the positive direction of the X-axis. The main cutting gun 2 cuts the scrap edges of the steel plate, and at regular intervals, the auxiliary cutting gun 3 starts to cut off the scrap edges.

[0038] Specifically, such as Figure 5 As shown in the diagram, point a represents the reference position of the main cutting gun 2, point b represents the starting position of the secondary cutting gun 3, point c represents the reference position of the secondary cutting gun 3, point d represents the cutting position of the secondary cutting gun 3, and point e represents the position of the rotating shaft 4. The movement trajectory of the secondary cutting gun 3 relative to the main cutting gun 2 is as follows: Figure 5As shown in the arc, the line connecting points e and b is the line connecting the secondary cutting gun 3 and the rotating shaft 4 at the initial position, which is the rotation radius of the secondary cutting gun 3. The initial position of the secondary cutting gun 3 is at point b. When the secondary cutting gun 3 needs to cut, the rotary drive device drives the secondary cutting gun 3 to rotate at a certain linear speed. From point b to point d is the preheating stage. The system can control the secondary cutting gun 3 to turn on / off the high-temperature oxygen for preheating according to the set parameters. After reaching point d, the perforating oxygen is turned on, and after a delay of 0-1 seconds, the cutting oxygen is turned on and the perforating oxygen is turned off at the same time. The secondary cutting gun 3 starts cutting until it runs to the set Y coordinate position, at which point the cutting oxygen is turned off, waiting for the start of the next waste edge cutting. During the preheating stage from point b to point d, the speed of the secondary cutting gun 3 almost cancels out the speed of the automatic cutting device traveling along the X-axis in the X-axis direction, and the displacement of the secondary cutting gun 3 is very small in the Y-axis direction. That is, relative to the steel plate, the secondary cutting gun 3 is approximately preheated in place during this preheating stage, thereby improving the success rate of waste edge cutting and significantly improving efficiency.

[0039] Preferably, the included angle θ is between 0 and 10°.

[0040] The preheating time can be determined based on factors such as the thickness of different steel plates and the diameter of the cutting flame, which is a known technology. For example, when the required preheating time is 5 seconds, the rotation radius of the secondary cutting gun 3 is 200 mm, and the linear velocity of the secondary cutting gun 3 and the travel speed of the automatic cutting device along the positive X-axis are both 5 mm / s, it can be calculated that the required preheating starting angle θ of the secondary cutting gun 3 is approximately 3.58°. During the preheating time of 0-5 seconds, the displacement of the secondary cutting gun 3 in the X-axis direction is close to 0, and the displacement in the Y-axis direction is equal to 1.95 mm, that is, the offset from the X-axis centerline, i.e., the kerf line, is 1.95 mm. Since the flame size of the preheating oxygen is generally around 10 mm in diameter, the scrap cutting gun is approximately preheated in place within the 5-second preheating time, thereby improving the success rate of scrap edge cutting.

[0041] Furthermore, when the secondary cutting gun 3 rotates until the line connecting it and the rotating shaft 4 is parallel to the Y-axis, that is, when the secondary cutting gun 3 is at point c, the center line of the secondary cutting gun 3 coincides with the center line of the main cutting gun 2 in the X-axis direction.

[0042] In this utility model, the first support assembly 5 includes a first horizontal plate, a first adapter block, and a first shaft clamp. One end of the first horizontal plate is fixed to the bottom of the mounting plate 1, and the first shaft clamp is fixed to the other end of the first horizontal plate via the first adapter block. The main cutting gun 2 is fixedly mounted on the first shaft clamp. Figure 4As shown, the second support assembly 6 includes a second horizontal plate 601, a slider 602, a second adapter block 603, and a second shaft clamp 604. One end of the second horizontal plate 601 is fixedly connected to the rotating shaft 4, and a U-shaped block is provided at the bottom of the other end of the second horizontal plate 601. The slider 602 is slidably inserted into the U-shaped block. The second shaft clamp 604 is fixedly connected to the slider 602 through the second adapter block 603, and the secondary cutting gun 3 is fixedly mounted on the second shaft clamp 604. In addition, the second horizontal plate 601 is provided with a locking mechanism for locking the slider 602. In this embodiment, the locking mechanism is specifically an adjustable locking handle. By adopting this structural design, the second support assembly 6 of this utility model can easily adjust the position of the secondary cutting gun 3, ensuring that when the secondary cutting gun 3 is located at point c, its centerline coincides with the centerline of the main cutting gun 2 in the X-axis direction.

[0043] In this invention, the cutting nozzle of the main cutting gun 2 and the cutting nozzle of the secondary cutting gun 3 are at the same height to ensure that the cutting parameters of the secondary cutting gun 3 and the main cutting gun 2 are consistent.

[0044] It is worth mentioning that the secondary cutting gun 3 in this utility model can move up and down on the mounting plate 1. When the secondary cutting gun 3 is needed, for example, during the process of cutting waste edges, the secondary cutting gun 3 is lowered until its cutting nozzle is at the same height as the cutting nozzle of the main cutting gun 2; when the secondary cutting gun 3 is not needed, for example, during the process of the main cutting gun 2 cutting the main body of the steel plate, the secondary cutting gun 3 can be raised to avoid interfering with it.

[0045] The automatic cutting device of this utility model also includes a lifting drive device 9 fixed to the top of the mounting plate 1. In this embodiment, the lifting drive device 9 is specifically a cylinder. A slide rail is fixed on the mounting plate 1 along the vertical direction, and a lifting bracket 10 is slidably mounted on the slide rail. The rotating shaft 4 is rotatably mounted on the lifting bracket 10. The lifting drive device 9 is connected to the lifting bracket 10 through a transmission rod and is used to drive the lifting bracket 10 to drive the rotating shaft 4, the second bracket assembly 6 and the auxiliary cutting gun 3 to perform lifting and lowering movements.

[0046] See Figure 2 The rotary drive device is mounted on the lifting bracket 10, and a protective cover is provided on the outside of the rotary drive device. The rotary drive device includes a reduction motor 7 and a gear set 8 that is connected between the reduction motor 7 and the rotating shaft 4. The reduction motor 7 drives the rotating shaft 4 through the gear set 8 to drive the second bracket assembly 6 and the auxiliary cutting gun 3 to rotate.

[0047] Therefore, the automatic cutting device of this utility model rotatably mounts the secondary cutting gun 3 on the mounting plate 1 and can be driven by a rotary drive device to rotate around the rotating shaft 4. At the same time, the secondary cutting gun 3 is deflected toward the main cutting gun 2 so that the starting position of the secondary cutting gun 3 maintains an angle with the Y-axis. In the initial stage of the arc motion of the secondary cutting gun 3, i.e. the preheating stage, the relative position of the cutting nozzle of the secondary cutting gun 3 and the scrap steel plate being cut remains approximately unchanged, ensuring that the secondary cutting gun 3 can obtain a certain amount of preheating time with relative stillness. This improves the success rate of scrap cutting and significantly increases efficiency, reduces the cost of manual reprocessing due to cutting failure, realizes automated scrap cutting of steel plates of different thicknesses, has strong adaptability, good versatility, and simple operation, and improves the cutting process of steel plates and the quality of finished plates.

[0048] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An automatic cutting device, comprising a mounting plate (1), a main cutting gun (2) and a secondary cutting gun (3), wherein a first support assembly (5) is fixed to the bottom of the mounting plate (1), and the main cutting gun (2) is fixed to the first support assembly (5), characterized in that: The bottom of the mounting plate (1) is rotatably mounted with a second support assembly (6) via a rotating shaft (4). The secondary cutting gun (3) is fixed on the second support assembly (6), and the secondary cutting gun (3) and the second support assembly (6) can be driven by a rotary drive device to rotate around the rotating shaft (4). The initial rotation direction of the secondary cutting gun (3) is opposite to the direction of travel of the main cutting gun (2). The trajectory of the main cutting gun (2) is defined as the X-axis, and the axis that is in the same horizontal plane as the X-axis and perpendicular to each other is defined as the Y-axis. The secondary cutting gun (3) is deflected toward the main cutting gun (2) so that the line connecting the starting position of the secondary cutting gun (3) and the rotating shaft (4) forms an angle θ greater than zero with the Y-axis.

2. The automatic cutting device according to claim 1, characterized in that: The included angle θ is between 0 and 10°.

3. The automatic cutting device according to claim 1, characterized in that: Defined with the direction of travel of the main cutting gun (2) as the front, the secondary cutting gun (3) is located behind the main cutting gun (2).

4. The automatic cutting device according to claim 1, characterized in that: The main cutting gun (2) and the secondary cutting gun (3) are both distributed in the vertical direction. When the secondary cutting gun (3) is rotated until the line connecting it and the rotating shaft (4) is parallel to the Y-axis, the center line of the secondary cutting gun (3) coincides with the center line of the main cutting gun (2) in the X-axis direction.

5. The automatic cutting device according to claim 1, characterized in that: The cutting nozzle of the main cutting gun (2) is at the same height as the cutting nozzle of the auxiliary cutting gun (3).

6. The automatic cutting device according to claim 1, characterized in that: The rotary drive device includes a geared motor (7) and a gear set (8) that is connected between the geared motor (7) and the rotating shaft (4). The geared motor (7) drives the rotating shaft (4) through the gear set (8) to drive the second support assembly (6) and the auxiliary cutting gun (3) to rotate.

7. The automatic cutting device according to claim 1, characterized in that: The secondary cutting gun (3) can move up and down on the mounting plate (1).

8. The automatic cutting device according to claim 7, characterized in that: It also includes a lifting drive device (9) fixed on the mounting plate (1), a lifting bracket (10) is slidably mounted on the mounting plate (1), the rotating shaft (4) is rotatably mounted on the lifting bracket (10), and the lifting drive device (9) is used to drive the lifting bracket (10) to drive the rotating shaft (4), the second bracket assembly (6) and the auxiliary cutting gun (3) to perform lifting movements.

9. The automatic cutting device according to claim 1, characterized in that: The second support assembly (6) includes a second horizontal plate (601) fixedly connected to the rotating shaft (4), a slider (602) slidably connected to the second horizontal plate (601), a second adapter block (603) fixedly connected to the slider (602), and a second shaft clamp (604) fixedly connected to the second adapter block (603). The auxiliary cutting gun (3) is fixedly installed on the second shaft clamp (604), and a locking mechanism for locking the slider (602) is provided on the second horizontal plate (601).

10. The automatic cutting device according to claim 1, characterized in that: Both the first bracket assembly (5) and the second bracket assembly (6) are arranged in an L-shape with the mounting plate (1).

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