Circular hole cutting auxiliary device of plasma cutting machine

Abstract

The invention provides a plasma cutting machine round hole cutting auxiliary device which comprises a supporting frame and a rotating frame body connected to the supporting frame, the supporting frame comprises a base and a vertical rod connected to the middle of the base, a transverse plate is connected to the upper end of the vertical rod, and a vertical first through hole is formed in the end of the transverse plate; the rotating frame body comprises a cuboid adjusting plate, one end of the adjusting plate is connected with a rotating plate, a second through hole is formed in the middle of the rotating plate, the second through hole is aligned with the lower side of the first through hole and is rotationally connected with the first through hole through a shaft, and a rail is arranged in the length direction of the adjusting plate; a movable frame is arranged on the track, the lower portion of the movable frame is connected with a cutting gun of the plasma cutting machine, and a gun head of the cutting gun faces downwards. The device can assist the plasma cutting machine in cutting circles with accurate sizes and standard shapes, the sizes of the cut circles are adjustable, and application is flexible.

Description

Technical Field

[0001] The present invention relates to the technical field of plasma cutting machines, and more specifically, to a circular hole cutting auxiliary device for a plasma cutting machine. Background Art

[0002] In the current construction field, accurate and efficient cutting technology is the key to improving production efficiency and product quality. Although traditional plasma cutting machines have been widely used in metal material cutting operations, they are still limited in the precise cutting of specific shapes (such as round holes), and the cutting size is not accurate and the shape is not standard. Summary of the invention

[0003] In view of the above problems, the purpose of the present invention is to provide a circular hole cutting auxiliary device for a plasma cutting machine, which can assist the plasma cutting machine to cut a circle with accurate size and standard shape. The size of the cut circle is adjustable and the application is flexible.

[0004] The present invention provides a circular hole cutting auxiliary device for a plasma cutting machine, comprising a support frame and a rotating frame body connected to the support frame, wherein:

[0005] The support frame includes a base and a vertical rod connected to the middle of the base, a horizontal plate is connected to the upper end of the vertical rod, and a vertical first through hole is provided at the end of the horizontal plate;

[0006] The rotating frame body comprises a rectangular adjustment plate, one end of which is connected to a rotating plate, a second through hole having the same diameter as the first through hole is arranged in the middle of the rotating plate, the second through hole is aligned with the lower side of the first through hole and is rotatably connected via an axis, a track is arranged in the middle of the length direction of the adjustment plate, a moving frame is arranged on the track, the lower part of the moving frame is connected to a cutting gun of a plasma cutting machine, and the gun head of the cutting gun faces downward;

[0007] After the base is placed horizontally, the position of the movable frame on the track is adjusted and fixed according to the radius of the circular hole to be cut, the rotating frame rotates, and the gun head cuts a circular hole on the steel plate with the central axis of the first through hole as the axis and the distance between the gun head and the central axis of the first through hole as the radius.

[0008] The track is a through slot opened along the middle of the adjustment plate, and the movable frame includes a bolt passing through the through slot, the outer diameter of the bolt is the same as the width of the through slot, and a fastening nut is screwed on the lower end of the bolt.

[0009] A connecting nut is fixed on the cutting gun, and the connecting nut is screwed to the lower end of the bolt.

[0010] The center axis of the bolt and the center axis of the second through hole are both on the vertical center plane of the adjustment plate, and the center line of the gun head is arranged on the vertical center plane.

[0011] The length of the track is greater than 50 cm.

[0012] The length of the transverse plate is greater than that of the adjusting plate, and the thickness of the transverse plate is 3cm-5cm.

[0013] The rotating plate is a cubic plate, the side length of the rotating plate, the width of the adjusting plate and the width of the transverse plate are all the same, and the thickness of the rotating plate is 3cm-5cm.

[0014] The shaft includes a shaft cap, a shaft rod and a screw rod connected to the lower end of the shaft rod, and the shaft rod has the same length as the first through hole and the second through hole; the shaft cap is fixedly connected to the upper part of the first through hole, the shaft rod passes through the first through hole and the second through hole, the screw rod is located below the second through hole, and a flange nut is tightened on the screw rod.

[0015] A bearing is fixed in the second through hole, and the shaft is in rotational contact with the bearing.

[0016] Bolt holes are arranged at the four corners of the base, and the base is horizontally fixed on the supporting platform outside the steel plate by fixing bolts passing through the bolt holes; a level is arranged on the base.

[0017] From the above description, it can be known that the circular hole cutting auxiliary device for a plasma cutting machine provided by the present invention comprises a rotatable adjustment plate supported by a support frame, a movable frame that can be moved and positioned is arranged on the adjustment plate, and a cutting gun is connected to the bottom of the movable frame. According to the size of the circular hole to be cut, after the movable frame is moved and positioned, the cutting gun uses the rotating central axis of the adjustment plate as the axis and the distance from the cutting gun head to the central axis as the radius to cut the circular hole. The present invention can assist the cutting gun in cutting circular holes of different sizes, especially for large diameter holes, which is labor-saving, accurate in size and standard in shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become more apparent and easy to understand. In the accompanying drawings:

[0019] Figure 1 Schematic diagram of the structure of a circular hole cutting auxiliary device for a plasma cutting machine according to an embodiment of the present invention;

[0020] Figure 2 is a top view of an adjustment plate according to an embodiment of the present invention;

[0021] Figure 3is a schematic structural diagram of a shaft according to an embodiment of the present invention;

[0022] Among them, 1-support frame, 11-base, 111-bolt hole, 12-vertical rod, 13-horizontal plate, 14-first through hole, 15-level meter;

[0023] 2-rotating frame, 21-adjusting plate, 22-rotating plate, 23-second through hole, 24-axis, 241-axis cap, 242-axis rod, 243-screw, 244-flange nut, 25-track, 251-through groove, 26-moving frame, 261-bolt, 262-fastening nut, 27-bearing;

[0024] 3-cutting gun, 4-connecting nut;

[0025] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0026] The present invention can be subjected to various changes and can have various embodiments, and specific embodiments are illustrated and described in the accompanying drawings. However, the present invention is not limited to the specific implementation, and all changes, equivalents and substitutes falling within the concept and technical scope of the present invention are included, and should be understood to be included.

[0027] Ordinal terms such as first, second, etc. may be used to describe various constituent elements, but the constituent elements are not limited to the terms. The terms are only used to distinguish one constituent element from another constituent element. For example, without departing from the scope of the claims of the present invention, the second constituent element may be named as the first constituent element, and similarly, the first constituent element may be named as the second constituent element. The terms and / or include a combination of multiple associated items or a certain item among multiple associated items.

[0028] It should be understood that when a certain component is mentioned to be "connected" or "contacted" with other components, this includes not only the case where it is directly connected or contacted with other components, but also the case where other components exist in between. Conversely, when a certain component is mentioned to be "directly connected" or "directly contacted" with other components, it should be understood that there are no other components in between.

[0029] In the description of the embodiments, when it is described that a certain component is formed "on or under" another component, on or under includes two components directly contacting each other or at least one other component is arranged and formed between the two components. Moreover, when it is expressed as on or under, it refers to not only the upper direction but also the lower direction based on a certain component.

[0030] The terms used in this application are only used to illustrate specific embodiments and are not intended to limit the present invention. Unless the context clearly provides otherwise, singular expressions include plural expressions. In this application, it should be understood that terms such as "including" or "having" are used to specify the presence of features, numbers, steps, operations, constituent elements, parts or combinations thereof recorded in the specification, and do not preclude the presence or additional possibility of one or more other features, numbers, steps, operations, constituent elements, parts or combinations thereof.

[0031] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as those generally understood by those skilled in the art. Terms defined in commonly used dictionaries should be interpreted as having the same meaning as in the context of the relevant technology, and if not clearly defined in this application, they should not be interpreted as ideal or overly formal meanings.

[0032] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Figure 1 Schematic diagram of the structure of a circular hole cutting auxiliary device for a plasma cutting machine according to an embodiment of the present invention; Figure 2 is a top view of an adjustment plate according to an embodiment of the present invention; Figure 3 is a schematic structural diagram of a shaft according to an embodiment of the present invention;

[0034] like Figure 1-Figure 3 As shown together, the plasma cutting machine circular hole cutting auxiliary device proposed in this embodiment can be used to assist the cutting gun of the plasma cutting machine to cut circular holes or circular plates on metal plates, and can also be used to assist other cutting guns to cut circles on plates.

[0035] The circular hole cutting auxiliary device of the plasma cutting machine comprises a support frame 1 and a rotating frame body 2 connected to the support frame 1. The support frame 1 is used to support the rotating frame body 2 so that the rotating frame body 2 can rotate freely above the steel plate to be cut, and the rotating frame body 2 is used to drive the cutting gun 3 of the plasma cutting machine to rotate to cut the circular hole.

[0036] In order to stably place the support frame 1, the support frame 1 includes a base 11 and a vertical rod 12 connected to the middle of the base 11, a horizontal plate 13 is connected to the upper end of the vertical rod 12, and a vertical first through hole 14 is provided at the end of the horizontal plate 13. The base 11 can be a square thick steel plate, and the weight of the thick steel plate can preferably be stably placed next to the position to be cut to keep the balance of the support frame 1. The vertical rod 12 raises the horizontal plate 13, so that the height of the horizontal plate 13 is suitable for cutting by installing the cutting gun 3 later. The first through hole 14 at the end of the horizontal plate 13 is used to install the rotating frame 2, and the length of the horizontal plate 13 should be suitable for the circular rotation of the rotating frame 2.

[0037] In order to cut out circular holes of different diameters, the rotating frame body 2 includes a rectangular adjusting plate 21, a rotating plate 22 is connected to one end of the adjusting plate 21, a second through hole 23 with the same diameter as the first through hole 14 is arranged in the middle of the rotating plate 22, the second through hole 23 is aligned with the lower side of the first through hole 14, and is rotatably connected through an axis 24; a track 25 is arranged in the middle along the length direction of the adjusting plate 21, a fixable moving frame 26 is arranged on the track 25, the lower part of the moving frame 26 is connected to the upper side of the handle of the cutting gun 3 of the plasma cutting machine, and the gun head of the cutting gun 3 faces downward.

[0038] The adjusting plate 21 and the rotating plate 22 are on the same plane, the rotating plate 22 is attached to the lower side of the horizontal plate 13, the second through hole 23 is aligned with the first through hole 14 and connected together through the shaft 24, and the adjusting plate 21 can rotate below the horizontal plate 13 with the central axis of the first through hole 14 as the center to drive the movable frame 26 and the cutting gun 3 to rotate.

[0039] A track 25 is provided in the middle of the adjusting plate 21, and the movable frame 26 can be moved on the track 25 and then fixed, which is equivalent to moving along the middle of the adjusting plate 21. By adjusting the position of the movable frame 26 on the adjusting plate 21 to adjust the position of the cutting gun 3, circular holes of different radii can be cut.

[0040] According to the radius of the circular hole to be cut, the position of the movable frame 26 on the track 25 is adjusted and fixed. By rotating the adjustment plate 21, the cutting gun 3 uses the central axis of the first through hole 14 as the axis 24 and the distance between the gun head of the cutting gun 3 and the central axis of the first through hole 14 as the radius to cut the circular hole.

[0041] The base 11 should be placed horizontally and stably so that the rotating frame 2 can rotate horizontally. The placement position of the base 11 is selected according to the size of the steel plate. The base 11 can be placed on the steel plate to be cut or on a supporting platform outside the steel plate.

[0042] In a specific embodiment of the present invention, in order to facilitate the movement and fixation of the movable frame 26, the track 25 may be a through slot 251 opened along the middle of the adjustment plate 21, and the movable frame 26 may include a bolt 261 passing through the through slot 251, and the outer diameter of the bolt 261 is the same as the width of the through slot 251, and a fastening nut 262 is tightened at the lower end of the bolt 261.

[0043] The track 25 is a through slot 251, and the moving frame 26 is composed of a bolt 261 and a fastening nut 262. The bolt 261 passes through the through slot 251, and the nut of the bolt 261 is placed on the top of the through slot 251. The lower end of the bolt 261 extends out of the through slot 251, and the bolt 261 can move in the through slot 251. When the bolt 261 moves to a suitable position, the fastening nut 262 is used to fasten the bolt 261 in the through slot 251, so that the bolt 261 will not move, which is convenient for positioning the cutting radius. In order to further prevent the bolt 261 from moving, the outer diameter of the bolt 261 can be the same as the width of the through slot 251. After the fastening nut 262 is tightened, the bolt 261 can be stably fixed in the through slot 251.

[0044] In a specific embodiment of the present invention, in order to facilitate the connection between the cutting gun 3 and the moving frame 26 , a connecting nut 4 is fixed on the upper side of the handle of the cutting gun 3 , and the connecting nut 4 is screwed to the lower end of the bolt 261 .

[0045] A connecting nut 4 is fixed on the upper side of the cutting gun 3. The connecting nut 4 can be a long nut and can be firmly and fully screwed with the lower end of the bolt 261. The connecting nut 4 is tightened on the part of the bolt 261 extending out of the fastening nut 262. When tightening, the gun head should be located at the end of the adjustment plate 21 away from the base 11 and directly below the adjustment plate 21.

[0046] In a specific embodiment of the present invention, in order to facilitate determination of the cutting radius, the center axis of the bolt 261 and the center axis of the second through hole 23 are both on the vertical center plane of the adjustment plate 21, and the center line of the gun head 5 is set on this vertical center plane.

[0047] The center axis of the gun head and the bolt 261 is on the same vertical plane as the center axis of the second through hole 23. The straight line along the middle of the through slot 251 is the straight line where the cutting radius is located. When measuring the cutting radius, the cutting radius can be measured from the middle of the second through hole 23 along the adjustment plate 21 to the center axis of the gun head.

[0048] If the gun head and the vertical plane where the central axis of the bolt 261 and the central axis of the second through hole 23 are located are not on the same vertical plane, the cutting radius is measured from the central axis of the second through hole 23 to the middle of the gun head.

[0049] In a specific embodiment of the present invention, in order to facilitate the auxiliary cutting of large diameter holes, the length of the track 25 can be greater than 50 cm. It is very inconvenient and laborious to cut a large diameter hole with a handheld cutting gun 3. By adjusting the position of the mobile frame 26 on the track 25, the cutting gun 3 can be more than tens of centimeters away from the rotating center axis, and a large diameter circular hole can be easily cut.

[0050] In a specific embodiment of the present invention, in order not to hinder the rotation of the rotating frame 2, the length of the horizontal plate 13 is greater than the length of the adjusting plate 21. The adjusting plate 21 plus the length of the cutting gun 3 extending from the front end of the adjusting plate 21 can rotate in a circle under the horizontal plate 13, and the horizontal plate 13 and the vertical rod 12 cannot hinder the rotation of the rotating frame 2.

[0051] In a specific embodiment of the present invention, in order to ensure stable rotation of the adjustment plate 21, the rotating plate 22 is a square plate, and the side length of the rotating plate 22 is the same as the width of the adjustment plate 21 and the horizontal plate 13. The rotating plate 22 is attached to the lower side of the end of the horizontal plate 13 to drive the adjustment plate 21 to rotate.

[0052] In a specific embodiment of the present invention, in order to ensure the smooth rotation of the rotating frame 2, the shaft 24 includes a shaft cap 241, a shaft rod 242 and a screw rod 243 connected to the lower end of the shaft rod 242. The shaft rod 242 has the same length as the first through hole 14 and the second through hole 23, and the outer diameter of the shaft rod 242 is adapted to the inner diameter of the second through hole 23; the shaft cap 241 is placed above the first through hole 14 and fixedly connected to the upper part of the first through hole 14, the shaft rod 242 passes through the first through hole 14 and the second through hole 23, the screw rod 243 is located below the second through hole 23, and a flange nut 244 is tightened on the screw rod 243.

[0053] After the shaft 242 of the shaft 24 penetrates the first through hole 14 and the second through hole 23, the shaft 24 is completely located in the first through hole 14 and the second through hole 23, the upper edge of the screw 243 of the shaft 24 is located at the lower edge of the second through hole 23, and the flange nut 244 is screwed on the screw 243 to support the lower edge of the second through hole 23, so that the horizontal plate 13 and the rotating plate 22 are attached together. The rotating plate 22 can rotate smoothly on the lower side of the horizontal plate 13.

[0054] In a specific embodiment of the present invention, in order to make the rotating frame 2 rotate further smoothly, a bearing 27 is fixedly arranged in the second through hole 23, and the shaft 242 is passed through the bearing 27. When the rotating plate 22 rotates, the shaft 242 is in rotational contact with the bearing 27, and the rotating plate 22 rotates more flexibly, and the cutting is faster and more accurate.

[0055] In a specific embodiment of the present invention, in order to further horizontally and firmly place the base 11, bolt holes 111 may be provided at the four corners of the base 11, and the base 11 may be horizontally fixed by fixing bolts passing through the bolt holes 111. The base 11 may be firmly fixed to the support platform placed adjacent to the steel plate by fixing with the fixing bolts.

[0056] In order to ensure the absolute levelness of the base 11 , a level meter 15 is provided on the base 11 . The level meter 15 can be used to observe whether the base 11 is level, so as to adjust and fix the base 11 to be level.

[0057] The above describes the plasma cutting machine circular hole cutting auxiliary device according to the present invention by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various improvements can be made to the plasma cutting machine circular hole cutting auxiliary device proposed by the present invention without departing from the content of the present invention. Therefore, the protection scope of the present invention should be determined by the content of the attached claims.

Claims

1. A circular hole cutting auxiliary device for a plasma cutting machine, characterized in that: It comprises a support frame and a rotating frame body connected to the support frame, wherein: The support frame includes a base and a vertical rod connected to the middle of the base, a horizontal plate is connected to the upper end of the vertical rod, and a vertical first through hole is provided at the end of the horizontal plate; The rotating frame body comprises a rectangular adjustment plate, one end of which is connected to a rotating plate, a second through hole having the same diameter as the first through hole is arranged in the middle of the rotating plate, the second through hole is aligned with the lower side of the first through hole and is rotatably connected via an axis, a track is arranged in the middle of the length direction of the adjustment plate, a moving frame is arranged on the track, the lower part of the moving frame is connected to a cutting gun of a plasma cutting machine, and the gun head of the cutting gun faces downward; After the base is placed horizontally, the position of the movable frame on the track is adjusted and fixed according to the radius of the circular hole to be cut, the rotating frame rotates, and the gun head cuts a circular hole on the steel plate with the central axis of the first through hole as the axis and the distance between the gun head and the central axis of the first through hole as the radius.

2. The plasma cutting machine circular hole cutting auxiliary device according to claim 1, characterized in that: The track is a through slot opened along the middle of the adjustment plate, and the movable frame includes a bolt passing through the through slot, the outer diameter of the bolt is the same as the width of the through slot, and a fastening nut is screwed on the lower end of the bolt.

3. The circular hole cutting auxiliary device for a plasma cutting machine as claimed in claim 2, characterized in that: A connecting nut is fixed on the cutting gun, and the connecting nut is screwed to the lower end of the bolt.

4. The circular hole cutting auxiliary device for a plasma cutting machine as claimed in claim 2, characterized in that: The center axis of the bolt and the center axis of the second through hole are both on the vertical center plane of the adjustment plate, and the center line of the gun head is arranged on the vertical center plane.

5. The circular hole cutting auxiliary device for a plasma cutting machine according to claim 1, characterized in that: The length of the track is greater than 50 cm.

6. The circular hole cutting auxiliary device for a plasma cutting machine according to claim 1, characterized in that: The length of the transverse plate is greater than that of the adjusting plate, and the thickness of the transverse plate is 3cm-5cm.

7. The circular hole cutting auxiliary device for a plasma cutting machine as claimed in claim 1, characterized in that: The rotating plate is a cubic plate, the side length of the rotating plate, the width of the adjusting plate and the width of the transverse plate are all the same, and the thickness of the rotating plate is 3cm-5cm.

8. The circular hole cutting auxiliary device for a plasma cutting machine as claimed in claim 1, characterized in that: The shaft comprises a shaft cap, a shaft rod and a screw connected to the lower end of the shaft rod, and the shaft rod has the same length as the first through hole and the second through hole; The shaft cap is fixedly connected to the upper part of the first through hole, the shaft rod passes through the first through hole and the second through hole, the screw rod is located below the second through hole, and a flange nut is tightened on the screw rod.

9. The plasma cutting machine circular hole cutting auxiliary device as claimed in claim 8, characterized in that: A bearing is fixed in the second through hole, and the shaft is in rotational contact with the bearing.

10. The circular hole cutting auxiliary device for a plasma cutting machine according to claim 1, characterized in that: Bolt holes are provided at the four corners of the base, and the base is horizontally fixed on the supporting platform outside the steel plate by fixing bolts passing through the bolt holes; A level is arranged on the base.

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