Metal plate laser cutting and deslagging device

Abstract

The invention discloses a sheet metal laser cutting and deslagging device which comprises a supporting plate, a rotating shaft, a pair of cleaning arms arranged in a symmetrical state, a motor assembled on the supporting plate, an intermittent advancing unit and an auxiliary limiting unit, and the intermittent advancing unit and the auxiliary limiting unit are in transmission connection with the motor. The auxiliary limiting unit comprises a connecting arm which is in sliding connection with the supporting plate in the direction perpendicular to the advancing direction of the intermittent advancing unit and downwards penetrates out of the supporting plate, a rotating arm rotationally connected with the lower end of the connecting arm through an elastic connecting mechanism, a limiting piece capable of making contact with the lower surface of the supporting rack and an electric push rod used for driving the connecting arm to slide. The rotating shaft drives the cleaning arm to rotate, the cleaning arm rotates from bottom to top in the direction close to the advancing direction, slag on the supporting rack is ejected upwards when the cleaning arm rotates upwards, the slag is separated from the supporting rack, the intermittent advancing unit is matched to drive the supporting plate to advance, the slag is automatically cleaned, efficiency is high, and operation is easy.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting, and specifically, to a slag removal device for sheet metal laser cutting. Background Art

[0002] A laser cutting machine emits laser light from a laser, which is focused into a laser beam with a high power density through an optical path system. The laser beam irradiates the surface of the workpiece, causing the workpiece to reach the melting point or boiling point. At the same time, a high-pressure gas coaxial with the beam blows away the melted or vaporized metal. As the relative position of the beam and the workpiece moves, finally a cut is formed in the material, thus achieving the purpose of cutting. Laser cutting processing uses an invisible beam to replace the traditional mechanical knife, with the characteristics of high precision, fast cutting, not limited by the cutting pattern, automatic layout to save materials, smooth cut, and low processing cost, and will gradually improve or replace the traditional metal cutting process equipment. The thorns plate in the laser cutting machine consists of several support racks evenly distributed at equal intervals and several mounting bars whose length direction is perpendicular to the length direction of the support racks. A number of card slots are opened at the top of the mounting bar, and the bottom side of the support rack can be snapped downward into the card slots. The mounting bar can not only provide a supporting force for the support rack, but also play a role in positioning and preventing deformation of the support rack.

[0003] The patent document "A welding slag cleaning device for a laser cutting machine" with the Chinese application number CN202323517888.X discloses a welding slag cleaning device for a laser cutting machine. Through the mutual cooperation of a backing plate, a square plate, a fixing plate, a sliding plate, a first shoveling plate, a second shoveling plate, a transmission mechanism, a pushing plate, a sliding mechanism and a push rod, this cleaning device has a first shoveling plate and two second shoveling plates, which can clean the welding slag on three saw blades at the same time, greatly improving the cleaning efficiency. Moreover, the distance between the first shoveling plate and the two second shoveling plates can be adjusted to adapt to the distance between the saw blades on sawing machines of different specifications or models, so as to quickly clean the welding slag on the saw blades on sawing machines of different specifications or models, and is convenient and flexible to use. However, when manually cleaning, the labor intensity is high. It not only requires the cleaners to have sufficient physical strength, but also the cleaning speed will gradually decrease as the cleaning time increases. Therefore, it is necessary to design a slag removal device for sheet metal laser cutting. Summary of the Invention

[0004] Aiming at the above technical problems, the purpose of the present invention is to overcome the problems of low overall efficiency and high labor intensity during manual cleaning in the prior art.

[0005] To achieve the above object, the present invention provides a slag removal device for sheet metal laser cutting, comprising: a support plate, a horizontal rotating shaft whose two ends are assembled on the support plate through first shaft seats, a pair of cleaning arms symmetrically arranged and fixedly sleeved on the rotating shaft at one end with a space therebetween, a motor assembled on the support plate, an intermittent forward unit drivingly connected to the motor, and an auxiliary limiting unit assembled on the support plate; The rotating shaft is drivingly connected to the rotating shaft through a transmission mechanism. The auxiliary limiting unit includes a connecting arm slidably connected to the support plate in a direction perpendicular to the forward direction of the intermittent forward unit and passing through the support plate downward, a rotating arm rotatably connected to the lower end of the connecting arm through an elastic connection mechanism, a limiting member assembled at the lower end of the rotating arm and capable of contacting the lower surface of the support rack, and an electric push rod assembled on the support plate for driving the connecting arm to slide.

[0006] Preferably, the elastic connection mechanism includes a first hinge bolt passing through the lower end of the connecting arm and the upper end of the rotating arm and a torsion spring. An arc-shaped through groove coaxial with the first hinge bolt is provided through the upper end of the rotating arm, and a limiting bolt passing through the arc-shaped through groove is fixedly connected to the connecting arm; A sleeve portion coaxial with the first hinge bolt protrudes from the lower end of the connecting arm. The torsion spring is assembled on the sleeve. A first bolt is assembled at the upper end of the rotating arm, and a limiting portion protrudes from the rotating arm. Two ends of the torsion spring respectively abut against the first bolt and the limiting portion.

[0007] Preferably, a limiting gasket contacting the end of the sleeve portion is sleeved on the first hinge bolt, and the outer diameter of the limiting gasket is larger than the outer diameter of the sleeve portion.

[0008] Preferably, the transmission mechanism includes a first gear fixedly sleeved on the output shaft of the motor, a second gear fixedly sleeved on the rotating shaft, a connecting shaft whose two ends are assembled on the support plate through second shaft seats and arranged parallel to the rotating shaft, and a third gear fixedly sleeved on the connecting shaft. The third gear meshes with both the first gear and the second gear.

[0009] Preferably, the first gear and the second gear have the same specifications. The intermittent forward unit includes a push arm whose upper inclined end is assembled on the first gear through a second hinge bolt parallel to the connecting shaft, a limiting rod assembled on the lower inclined end of the push arm and capable of being stuck on the support rack, and a support seat fixedly assembled on the support plate and capable of contacting the lower surface of the middle part of the push arm. The lower inclined end of the push rod is arranged away from the cleaning arm.

[0010] Preferably, a housing is sleeved on the upper surface of the support plate, and a handle is provided at the top of the housing.

[0011] Preferably, a notch portion through which the cleaning arm rotates is provided on one side of the housing close to the cleaning arm, and at least one brush for covering the notch is provided on the edge of the notch portion.

[0012] Preferably, an auxiliary housing is further provided on the inner wall of the housing. The auxiliary housing is connected to the notch portion to separate a working space for the cleaning arm to rotate, and the transmission mechanism is located on the side of the auxiliary housing away from the working space. Preferably, the front end of the support plate is provided with an upwardly inclined portion.

[0013] According to the above technical solution, a sheet metal laser cutting slag removal device provided by the present invention has the following beneficial technical effects compared with the prior art: First, the rotating shaft drives the cleaning arm to rotate. The cleaning arm rotates upward from bottom to top in the advancing direction. When the cleaning arm rotates upward, it will push the slag on the support rack upward, causing the slag to separate from the support rack. Cooperating with the intermittent advancing unit to drive the support plate forward, the slag is automatically cleaned, with high efficiency and easy operation. Second, the limiting member moves to the lower side of the support rack, which can prevent the support plate from tilting upward when the cleaning arm rotates upward for cleaning. Third, when approaching the installation strip, the electric push rod drives the connecting arm to move away from the support rack. Since the rotating arm is rotatably connected to the lower end of the connecting arm through an elastic connection mechanism, the rotating arm will be driven to rotate upward around the connection point, thus passing over the installation strip.

[0014] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part; and parts not involved in the present invention are the same as or can be implemented by using the prior art. Brief Description of the Drawings

[0015] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings: Figure 1 is a three-dimensional structural schematic diagram of a sheet metal laser cutting slag removal device provided by the present invention; Figure 2 is a side view of a sheet metal laser cutting slag removal device provided by the present invention; Figure 3 is a partial three-dimensional structural schematic of a sheet metal laser cutting slag removal device provided by the present invention Figure 1 ; Figure 4 is a partial three-dimensional structural schematic of a sheet metal laser cutting slag removal device provided by the present invention Figure 2 ; Figure 5 is a three-dimensional structural schematic diagram of the auxiliary limiting unit of a sheet metal laser cutting slag removal device provided by the present invention.

[0016] Explanation of the Reference Numerals in the Drawings 1. Support plate; 2. Rotating shaft; 3. Cleaning arm; 4. Motor; 5. Connecting arm; 6. Rotating arm; 7. Support rack; 8. Limiting member; 9. Electric push rod; 10. First hinge bolt; 11. Torsion spring; 12. Arc-shaped through groove; 13. Limiting bolt; 14. First bolt; 15. Limiting part; 16. Limiting gasket; 17. First gear; 18. Second gear; 19. Connecting shaft; 20. Third gear; 21. Push arm; 22. Limiting rod; 23. Support seat; 24. Shell; 25. Handle; 26. Brush; 27. Auxiliary shell; 28. Inclined part. DETAILED DESCRIPTION

[0017] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0018] In the present invention, unless otherwise stated, directional words such as "upper, lower, inside, outside" contained in a term merely represent the orientation of the term in normal usage, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.

[0019] like Figures 1-5 As shown, a sheet metal laser cutting slag removal device is characterized in that it comprises: a support plate 1, a horizontal rotating shaft 2 whose two ends are assembled on the support plate 1 through a first shaft seat, a pair of cleaning arms 3 which are symmetrically arranged and one end of which is fixedly sleeved on the rotating shaft 2 at an interval, a motor 4 assembled on the support plate 1, an intermittent forward unit drivingly connected to the motor 4, and an auxiliary limiting unit assembled on the support plate 1; The rotating shaft 2 is connected to the rotating shaft 2 through a transmission mechanism, and the auxiliary limiting unit includes a connecting arm 5 which is slidably connected to the support plate 1 in a direction perpendicular to the forward direction of the intermittent forward unit and passes downward through the support plate 1, a rotating arm 6 which is rotatably connected to the lower end of the connecting arm 5 through an elastic connecting mechanism, a limiting member 8 which is assembled at the lower end of the rotating arm 6 and can contact the lower surface of the supporting rack 7, and an electric push rod 9 which is assembled on the support plate 1 and is used to drive the connecting arm 5 to slide.

[0020] In the above technical solution, after placing the support plate 1 on several support racks 7, a pair of cleaning arms 3 are respectively located on both sides of one of the support racks 7. The motor 4 is started, and the transmission mechanism drives the rotating shaft 2 to rotate. The rotating shaft 2 drives the cleaning arms 3 to rotate. The cleaning arms 3 rotate upward from bottom to top in the advancing direction. When the cleaning arms 3 rotate upward, the slag on the support rack 7 will be pushed upward, causing the slag to separate from the support rack 7. Then the cleaning arms 3 continue to rotate upward. When the end of the cleaning arm 3 far from the rotating shaft 2 rotates to the lowest position again, the motor 4 will drive the intermittent advancing unit to advance within this interval. The actual cleaning working interval of the cleaning arm 3 and the actual advancing interval of the intermittent advancing unit are staggered, so as to gradually clean the entire support rack 7 and automatically clean the slag, with high efficiency and easy operation. The electric push rod 9 in the auxiliary limiting unit can drive the connecting arm 5 to move closer to the support rack 7, thereby driving the connecting arm 5 and the limiting member 8 to move, so that the limiting member 8 moves below the support rack 7. When the cleaning arm 3 rotates upward for cleaning, the tail of the support plate 1 will have a problem of tilting upward. Moving the limiting member 8 below the support rack 7 can prevent the support plate 1 from tilting upward. Since there are several mounting strips below the support rack 7, the mounting strips will hinder the rotating arm 6 and the limiting member 8. Therefore, when approaching the mounting strips, the electric push rod 9 drives the connecting arm 5 to move away from the support rack 7, driving the limiting member 8 to move away from directly below the support rack 7. At this time, the rotating arm 6 contacts the mounting strip again. Since the rotating arm 6 is rotatably connected to the lower end of the connecting arm 5 through an elastic connection mechanism, the rotating arm 6 will be driven to rotate upward around the connection point at this time, so as to cross over the mounting strip. After the connecting arm 5 crosses over the mounting strip, without the obstruction of the mounting strip, the rotating arm 6 rotates back to its original position under the action of the elastic connection mechanism. At this time, the electric push rod 9 drives the connecting arm 5 to move closer to the support strip again, and drives the limiting member 8 to move to directly below the support rack 7 again. The intermittent movement of the electric push rod 9 can be set through a time relay. The cooperation between the time relay and the electric push rod 9 is a mature existing technology. Since several mounting strips are equally spaced, the working time period of the electric push rod 9 can be controlled through the relay.

[0021] In a preferred embodiment of the present invention, the elastic connection mechanism includes a first hinge bolt 10 passing through the lower end of the connecting arm 5 and the upper end of the rotating arm 6 and a torsion spring 11. An arc-shaped through groove 12 coaxial with the first hinge bolt 10 is provided through the upper end of the rotating arm 6, and a limiting bolt 13 passing through the arc-shaped through groove 12 is fixedly connected to the connecting arm 5. The lower end of the connecting arm 5 protrudes with a sleeve portion coaxially arranged with the first hinge bolt 10. The torsion spring 11 is assembled on the sleeve. The upper end of the rotating arm 6 is assembled with a first bolt 14. The rotating arm 6 protrudes with a limiting portion 15. The two ends of the torsion spring 11 respectively abut against the first bolt 14 and the limiting portion 15.

[0022] In the above technical solution, after the rotating arm 6 contacts the mounting strip, the support plate 1 continues to move forward. The rotating arm 6 will rotate upward around the first hinge bolt 10, and the torsion spring 11 is further compressed. The side wall of the arc-shaped through groove 12 slides along the limiting bolt 13; after the rotating arm 6 passes over the mounting strip, the torsion spring 11 will push the rotating arm 6 to rotate downward to return to its original position until the end of the arc-shaped through groove 12 abuts against the limiting bolt 13, and at this time the rotating arm 6 returns to its original position.

[0023] In a preferred embodiment of the present invention, a limiting gasket 16 in contact with the end of the sleeve portion is sleeved on the first hinge bolt 10, and the outer diameter of the limiting gasket 16 is larger than the outer diameter of the sleeve portion.

[0024] In the above technical solution, the limiting gasket 16 can prevent the torsion spring 11 from falling off the sleeve portion.

[0025] In a preferred embodiment of the present invention, the transmission mechanism includes a first gear 17 fixedly sleeved on the output shaft of the motor 4, a second gear 18 fixedly sleeved on the rotating shaft 2, a connecting shaft 19 whose two ends are assembled on the support plate 1 through second shaft seats and arranged parallel to the rotating shaft 2, and a third gear 20 fixedly sleeved on the connecting shaft 19. The third gear 20 meshes with both the first gear 17 and the second gear 18.

[0026] In the above technical solution, the motor 4 drives the first gear 17 to rotate, drives the second gear 18 to rotate through the third gear 20, and then drives the rotating shaft 2 to rotate, thereby driving the cleaning arm 3 to rotate.

[0027] In a preferred embodiment of the present invention, the first gear 17 and the second gear 18 have the same specifications. The intermittent forward unit includes a push arm 21 whose upper inclined end is assembled on the first gear 17 through a second hinge bolt parallel to the connecting shaft 19, a limiting rod 22 assembled on the lower inclined end of the push arm 21 and capable of being stuck on the support rack 7, and a support seat 23 fixedly assembled on the support plate 1 and capable of contacting the lower surface of the middle part of the push arm 21. The lower inclined end of the push rod is arranged away from the cleaning arm 3.

[0028] In the above technical solution, the rotation interval of the second hinge bolt is divided into four intervals of 0-3, 3-6, 6-9, and 9-12 according to the clock interval, and the second hinge bolt rotates counterclockwise around the output shaft of the motor 4; When the first gear 17 drives the second hinge bolt to move to the interval of 9-12, the limiting rod 22 is stuck on the support rack 7. At this time, the inclination angle of the push arm 21 is large and it will separate from the support seat 23. And as the first gear 17 rotates, the inclination angle of the push arm 21 gradually becomes smaller, and the distance between the limiting rod 22 and the support seat 23 increases, which will push the support plate 1 forward; when the second hinge bolt moves to the interval of 6-9, due to the smaller inclination angle of the push arm 21, the push arm 21 will contact the support seat 23. While the push arm 21 slides along the support arm, it will also lift the limiting rod 22 upward to separate from the support rack 7, and the distance between the limiting rod 22 and the support seat 23 decreases. The separation of the limiting rod 22 from the support rack 7 is beneficial to the movement of the limiting rod 22; when the second hinge bolt is in the interval of 3-6, at this time, the cleaning arm 3 cleans the slag, and the distance between the limiting rod 22 and the support seat 23 further decreases; when the second hinge bolt is in the interval of 0-3, the second hinge bolt moves upward, and the inclination angle of the push arm 21 increases. After the push arm 21 separates from the support seat 23, the limiting rod 22 will be stuck into the support rack 7, and then the second hinge bolt enters the interval of 9-12 again, and pushes the support plate 1 forward again.

[0029] The first gear 17 and the second gear 18 have the same specifications, so the first gear 17 and the second gear 18 will rotate synchronously to keep the actual working interval of the cleaning arm 3 and the actual advancing interval of the intermittent advancing unit alternate.

[0030] In a preferred embodiment of the present invention, a housing 24 is sleeved on the upper surface of the support plate 1, and a handle 25 is provided at the top of the housing 24.

[0031] In a preferred embodiment of the present invention, a notch portion through which the cleaning arm 3 rotates is provided on one side of the housing 24 close to the cleaning arm 3, and at least one brush 26 for covering the notch is provided on the edge of the notch portion.

[0032] In the above technical solution, the brush 26 can clean the cleaning arm 3 and at the same time play a role in intercepting the slag.

[0033] In a preferred embodiment of the present invention, an auxiliary housing 27 is further provided on the inner wall of the housing 24. The auxiliary housing is connected to the notch portion to separate a working space for the cleaning arm 3 to rotate, and the transmission mechanism is located on the side of the auxiliary housing 27 away from the working space. In the above technical solution, the function of the auxiliary housing 27 is to separate the cleaning arm 3 to prevent the slag remaining on the cleaning arm 3 from affecting the movement of the transmission mechanism. Therefore, a working space is separated by the auxiliary housing 27.

[0034] In a preferred embodiment of the present invention, an inclined portion 28 inclined upward is provided at the front end of the support plate 1.

[0035] In the above technical solution, the inclined portion 28 is beneficial to the forward movement of the support plate 1 and avoids the problem that the support plate 1 is stuck by the slag.

[0036] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0037] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0038] Furthermore, any combination can be made between various different embodiments of the present invention as long as it does not violate the idea of the present invention, and it should also be regarded as the content disclosed by the present invention.

Claims

1. A slag removal device for sheet metal laser cutting, characterized in that, include: A support plate (1), a horizontal rotating shaft (2) with both ends mounted on the support plate (1) via a first shaft seat, a pair of cleaning arms (3) arranged in a symmetrical state and with one end fixedly sleeved on the rotating shaft (2) at an interval, a motor (4) mounted on the support plate (1), an intermittent forward unit drivingly connected to the motor (4), and an auxiliary limit unit mounted on the support plate (1); The rotating shaft (2) is transmission-connected to the rotating shaft (2) via a transmission mechanism, and the auxiliary limiting unit comprises a connecting arm (5) which is slidably connected to the support plate (1) in a direction perpendicular to the advancing direction of the intermittent advancing unit and passes downwardly out of the support plate (1), a rotating arm (6) which is rotationally connected to the lower end of the connecting arm (5) via an elastic connecting mechanism, a limiting member (8) which is mounted on the lower end of the rotating arm (6) and can contact the lower surface of the supporting rack (7), and an electric push rod (9) which is mounted on the support plate (1) and is used to drive the connecting arm (5) to slide.

2. The slag removal device for sheet metal laser cutting according to claim 1, wherein, The elastic connection mechanism comprises a first hinge bolt (10) passing through the lower end of the connecting arm (5) and the upper end of the rotating arm (6) and a torsion spring (11); the upper end of the rotating arm (6) is penetrated by an arc-shaped through groove (12) arranged coaxially with the first hinge bolt (10); and the connecting arm (5) is fixedly connected to a limit bolt (13) passing through the arc-shaped through groove (12); The lower end of the connecting arm (5) is provided with a sleeve portion coaxially arranged with the first hinge bolt (10), the torsion spring (11) is mounted on the sleeve, the upper end of the rotating arm (6) is provided with a first bolt (14), the rotating arm (6) is provided with a limiting portion (15) protruding from the upper end, and the two ends of the torsion spring (11) are respectively in contact with the first bolt (14) and the limiting portion (15).

3. The slag removal device for sheet metal laser cutting according to claim 2, characterized in that, The first hinge bolt (10) is sleeved with a limiting gasket (16) in contact with the end of the pipe sleeve portion, and the outer diameter of the limiting gasket (16) is greater than the outer diameter of the pipe sleeve portion.

4. A slag removal device for sheet metal laser cutting according to claim 1, characterized in that, The transmission mechanism comprises a first gear (17) fixedly sleeved on the output shaft of the motor (4), a second gear (18) fixedly sleeved on the rotating shaft (2), a connecting shaft (19) with both ends mounted on the support plate (1) via a second shaft seat and arranged parallel to the rotating shaft (2), and a third gear (20) fixedly sleeved on the connecting shaft (19), wherein the third gear (20) meshes with both the first gear (17) and the second gear (18).

5. The slag removal device for sheet metal laser cutting according to claim 4, characterized in that, The first gear (17) and the second gear (18) have the same specifications. The intermittent forward unit comprises a push arm (21) whose inclined upper end is mounted on the first gear (17) via a second hinge bolt parallel to the connecting shaft (19), a limit rod (22) mounted on the inclined lower end of the push arm (21) and capable of being clamped on the support rack (7), and a support seat (23) fixedly mounted on the support plate (1) and capable of contacting the lower surface of the middle part of the push arm (21). The inclined lower end of the push rod is arranged away from the cleaning arm (3).

6. The slag removal device for sheet metal laser cutting according to claim 1, characterized in that, The upper surface of the support plate (1) is sleeved with a shell (24), and a handle (25) is provided on the top of the shell (24).

7. The slag removal device for sheet metal laser cutting according to claim 6, wherein, On one side of the housing (24) close to the cleaning arm (3), there is a notch through which the cleaning arm (3) passes when rotating, and at least one brush (26) for covering the notch is arranged on the edge of the notch.

8. The slag removal device for sheet metal laser cutting according to claim 6, characterized in that, An auxiliary housing (27) is also arranged on the inner wall of the housing (24). The auxiliary housing is connected to the notch to separate a working space for the cleaning arm (3) to rotate, and the transmission mechanism is located on the side of the auxiliary housing (27) away from the working space.

9. The slag removal device for sheet metal laser cutting according to claim 1, wherein, The front end of the support plate (1) is provided with an inclined portion (28) that slopes upward.

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