A cutting frame for a plasma cutting machine

Abstract

The utility model provides a cutting frame for plasma cutting machine, including the placement board, the upper surface of placement board is equipped with two with the vertical center of placement board symmetry distribution's sliding slot, the inside of sliding slot all slides and is provided with the clamping plate seat, the side of clamping plate seat near the vertical center of placement board all can detachably install the clamping plate, the outside of clamping plate seat all is rotatoryly provided with two with the vertical center of placement board symmetry distribution's rotary arm through the pivot, and the end of two rotary arms adjacent horizontally is fixedly provided with the clamping roller. Through the cutting frame for plasma cutting machine of the utility model, through horizontal clamping + vertical down pressure's multipoint compound clamping mode, can greatly restrain the vibration of steel plate in high -speed plasma arc cutting, effectively prevent workpiece displacement, thereby significantly improve the flatness and size accuracy of cutting mouth, solved the many traditional cutting machine because workpiece vibration leads to the problem of reduced machining accuracy.

Description

Technical Field

[0001] This utility model belongs to the technical field of plasma cutting machines, and specifically relates to a cutting frame for plasma cutting machines. Background Technology

[0002] A plasma cutter is a device that uses a high-temperature, high-speed plasma arc to melt and break metal materials, thereby achieving cutting. It heats a gas (such as air, nitrogen, or oxygen) to extremely high temperatures, ionizing it into a plasma state (the fourth state of matter, distinct from solids, liquids, and gases), which is then focused and accelerated out through a narrow nozzle. This plasma jet has extremely high energy density, capable of instantly melting metal, while the high-speed airflow blows away the molten metal, creating a cut. When a plasma cutter cuts steel plates, the plate to be cut is placed on a cutting frame for subsequent cutting operations.

[0003] Existing plasma cutting machines use a cutting frame that places the steel plate to be cut on a support frame made of channel steel, and then controls a pneumatic clamping mechanism to clamp and fix it. The support frame raises the steel plate to be cut to facilitate subsequent plasma cutting and prevent the plasma from cutting onto the cutting frame. However, in actual use, the steel plate will vibrate during high-speed plasma arc cutting, which may affect the flatness and dimensional accuracy of the cut. Utility Model Content

[0004] In view of this, this utility model addresses the shortcomings of the prior art by providing a cutting frame for a plasma cutting machine. Through a multi-point composite clamping method of horizontal clamping and vertical downward pressing, it can greatly suppress the vibration generated in the steel plate during high-speed plasma arc cutting, effectively prevent workpiece displacement, and thus significantly improve the flatness and dimensional accuracy of the cut, solving the problem of reduced processing accuracy caused by workpiece vibration in many traditional cutting machines.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a cutting frame for a plasma cutting machine, including a placement plate. The upper surface of the placement plate has two sliding grooves symmetrically distributed around the vertical center of the placement plate. A clamping plate seat is slidably arranged inside each sliding groove. A clamping plate can be detachably installed on the side of the clamping plate seat near the vertical center of the placement plate. Two rotating arms symmetrically distributed around the vertical center of the placement plate are rotatably arranged on the outer side of each clamping plate seat via a rotating shaft. A clamping roller is fixedly arranged between the ends of two horizontally adjacent rotating arms.

[0006] As a further improvement of this utility model, a rotating rod is rotatably installed inside the clamping plate seat. The ends of the rotating rods are fixed to adjacent rotating shafts by couplings. A worm gear is fixedly sleeved on the outer arc surface of the rotating rod. A worm is rotatably installed on the lower inside of the clamping plate seat. The worm is fixed to the adjacent worm gear by a coupling. A servo motor is installed on the side of the clamping plate seat away from the vertical center of the placement plate. The output shaft of the servo motor is fixed to the adjacent worm by a coupling.

[0007] As a further improvement of this utility model, a guide seat is fixedly provided on the lower surface of the clamping plate base. Two sliding rods symmetrically distributed around the vertical center of the placement plate are slidably arranged inside each guide seat. A driven seat is fixedly provided at the end of each sliding rod away from the vertical center of the placement plate. A driving seat is fixedly provided on the lower surface of the placement plate. Two driving rods symmetrically distributed around the vertical center of the placement plate are slidably arranged inside the driving seat. A rotating seat is fixedly provided at the end of each driving rod away from the vertical center of the placement plate. Connecting rods are rotatably arranged on both sides of the rotating seat. The ends of the connecting rods away from the driving seat are rotatably connected to the adjacent driven seats respectively. The middle parts of the two adjacent connecting rods are rotatably connected. Two support plates symmetrically distributed around the vertical center of the placement plate are fixedly arranged inside the driving seat. An adjusting screw is rotatably arranged in the middle of each support plate. The adjusting screw is threadedly connected to the adjacent driving rod respectively. A dual-axis motor is provided inside the driving seat. The output shaft of the dual-axis motor is fixed to the adjacent adjusting screw through a coupling.

[0008] As a further improvement of this utility model, a base is provided on the lower side of the placement plate. Two guide rails symmetrically distributed around the vertical center of the base are fixedly provided on the upper surface of the base. Two sliding seats symmetrically distributed around the vertical center of the base are slidably arranged between the two guide rails. A movable plate is fixedly provided on the upper surface of each sliding seat. A sliding cylinder is fixedly provided at each of the four corners of the upper surface of the movable plate. A sliding column is slidably arranged inside each sliding cylinder. The placement plate is fixedly arranged between the tops of the four adjacent sliding columns. Two electric push rods are fixedly provided on the upper surface of the base. The telescopic ends of the electric push rods are respectively connected and fixed to the adjacent sliding seats. Electric push rods are fixedly provided on the upper surface of the movable plate. The telescopic ends of the electric push rods are respectively fixed to the adjacent drive seats through couplings.

[0009] As a further improvement of this utility model, the front side of the base is rotatably provided with multiple door panels, and the lower surface of the base is fixedly provided with multiple support legs.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: Firstly, the horizontal and vertical coordinated clamping mechanism, driven by a dual-axis motor, uses an adjusting screw and a scissor brace structure consisting of a rotating seat, connecting rod, and driven seat to ultimately drive the clamping plate to stably clamp the steel plate horizontally. Then, a servo motor, through the meshing of a worm gear and worm wheel, drives the rotating arm to press down, causing the clamping rollers to press the steel plate vertically onto the placement plate. This multi-point composite clamping method, combining horizontal clamping and vertical pressing, can greatly suppress the vibration generated in the steel plate during high-speed plasma arc cutting, effectively preventing workpiece displacement, thereby significantly improving the flatness and dimensional accuracy of the cut, and solving the problem of reduced processing accuracy caused by workpiece vibration in many traditional cutting machines.

[0011] Secondly, by controlling the synchronous operation of the electric push rods on both sides, the distance between the two placement plates can be adjusted. This means that the equipment can easily adapt to steel plates of different widths. By controlling the electric push rod, the overall height of the placement plate can be adjusted. This function can effectively prevent the high-temperature plasma arc from damaging the cutting frame and other key mechanisms below after cutting through the steel plate. At the same time, the stable clamping itself also prevents the steel plate from accidentally moving or tipping over during processing, thus improving operational safety. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of the cutting frame for the plasma cutting machine of this utility model; Figure 2 This is a schematic diagram of the internal cross-sectional structure of the cutting frame for the plasma cutting machine of this utility model; Figure 3 This is an enlarged structural diagram of section A of the cutting frame for the plasma cutting machine of this utility model; Figure 4 This is a schematic diagram of the planar structure of the cutting frame for the plasma cutting machine of this utility model.

[0014] In the diagram: 101, base; 102, support leg; 103, door panel; 104, guide rail; 105, sliding seat; 106, movable plate; 107, electric push rod one; 108, slide cylinder; 109, sliding column; 110, electric push rod two; 201, placement plate; 202, sliding groove; 203, clamping plate seat; 204, clamping plate; 205, rotating arm; 206, clamping roller; 207, rotating rod; 208, worm gear; 209, worm; 210, servo motor; 301, guide seat; 302, sliding rod; 303, driven seat; 304, drive seat; 305, drive rod; 306, rotating seat; 307, connecting rod; 308, support plate; 309, adjusting screw; 310, dual-axis motor. Detailed Implementation

[0015] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0016] like Figure 2 , 4 As shown, the device includes a placement plate 201. Two sliding grooves 202 are symmetrically distributed around the vertical center of the placement plate 201 on the upper surface of the placement plate 201. A clamping plate seat 203 is slidably disposed inside each sliding groove 202. A clamping plate 204 can be detachably installed on the side of the clamping plate seat 203 near the vertical center of the placement plate 201. Two rotating arms 205 symmetrically distributed around the vertical center of the placement plate 201 are rotatably disposed on the outer side of the clamping plate seat 203 via a rotating shaft. A clamping roller 206 is fixedly disposed between the ends of two horizontally adjacent rotating arms 205.

[0017] like Figure 2 , 4 As shown, each clamping plate 203 has a rotating rod 207 rotatably mounted inside. The ends of the rotating rods 207 are fixed to adjacent rotating shafts via couplings. A worm gear 208 is fixedly sleeved on the outer arc surface of the rotating rod 207. A worm 209 is rotatably mounted on the lower side inside the clamping plate 203. The worm 209 is fixed to the adjacent worm gear 208 via a coupling. A servo motor 210 is mounted on the side of the clamping plate 203 away from the vertical center of the placement plate 201. The output shaft of the servo motor 210 is fixed to the adjacent worm 209 via a coupling.

[0018] like Figure 2 , 3As shown, guide seats 301 are fixedly installed on the lower surface of the clamping plate 203. Each guide seat 301 has two sliding rods 302 slidably arranged inside, symmetrically distributed around the vertical center of the placement plate 201. A driven seat 303 is fixedly installed at the end of each sliding rod 302 away from the vertical center of the placement plate 201. A drive seat 304 is fixedly installed on the lower surface of the placement plate 201. Two drive rods 305 slidably arranged inside the drive seat 304, symmetrically distributed around the vertical center of the placement plate 201. A rotating seat 306 is fixedly installed at the end of each drive rod 305 away from the vertical center of the placement plate 201. Both sides of the 6 are rotatably equipped with connecting rods 307. The end of the connecting rod 307 away from the drive seat 304 is rotatably connected to the adjacent driven seat 303. The middle of the two adjacent connecting rods 307 are rotatably connected. The drive seat 304 is fixedly equipped with two support plates 308 symmetrically distributed around the vertical center of the placement plate 201. The middle of each support plate 308 is rotatably equipped with an adjusting screw 309. The adjusting screw 309 is threadedly connected to the adjacent drive rod 305. The drive seat 304 is equipped with a dual-axis motor 310. The output shaft of the dual-axis motor 310 is fixed to the adjacent adjusting screw 309 by a coupling.

[0019] like Figure 2 , 4 As shown, a base 101 is provided on the lower side of the placement plate 201. Two guide rails 104 are fixedly installed on the upper surface of the base 101, symmetrically distributed around the vertical center of the base 101. Two sliding seats 105 are slidably arranged between the two guide rails 104, symmetrically distributed around the vertical center of the base 101. A movable plate 106 is fixedly installed on the upper surface of each sliding seat 105. A sliding cylinder 108 is fixedly installed at each of the four corners of the upper surface of the movable plate 106. A sliding mechanism is slidably arranged inside each sliding cylinder 108. The column 109 and the placement plate 201 are fixedly installed between the tops of four adjacent sliding columns 109; two electric push rods 107 are fixedly installed on the upper surface of the base 101, which are symmetrically distributed around the vertical center of the base 101. The telescopic ends of the electric push rods 107 are respectively connected and fixed to the adjacent sliding seats 105. Electric push rods 110 are fixedly installed on the upper surface of the movable plate 106. The telescopic ends of the electric push rods 110 are respectively fixed to the adjacent drive seats 304 through couplings.

[0020] According to another embodiment of the present invention, such as Figure 1 As shown, multiple door panels 103 are rotatably mounted on the front side of the base 101, and multiple support legs 102 are fixedly mounted on the lower surface of the base 101.

[0021] In use, the electric push rods 107 on both sides are controlled to operate synchronously, so that the telescopic ends of the electric push rods 107 on both sides extend or retract at the same time. The telescopic ends of the electric push rods 107 drive the sliding seats 105 connected to them to slide between the two guide rails 104, thereby causing the placement plates 201 on both sides to move towards each other or away from each other, adjusting the distance between the two placement plates 201 so that the distance between the two placement plates 201 can accommodate the steel plate to be cut, so that the steel plate can be placed stably between the two placement plates 201; then the steel plate is placed between the two placement plates 201. The dual-axis motor 310 is controlled to operate, causing its output shaft to drive the adjusting screw 309 connected to it to rotate. This, in turn, adjusts the threaded relationship between the adjusting screw 309 and the drive rod 305, causing the drive rods 305 on both sides of each placement plate 201 to move in opposite directions. This, in turn, causes the rotating seats 306 on both sides to move in opposite directions. During the movement of the rotating seats 306, rotation occurs between the rotating seats 306 and the connecting rod 307, and rotation also occurs between the middle sections of the connecting rod 307. The connecting rod 307 and the driven seat 303 rotate, causing the sliding rods 302 on both sides of each guide seat 301 to extend out from the inside of the guide seat 301. Then, through the cooperation of the scissor brace structure composed of the rotating seat 306, the connecting rod 307 and the driven seat 303, the guide seats 301 on both sides move closer to each other, which in turn causes the clamping plates 203 on both sides to move closer to each other, so that the clamping plates 203 drive the clamping plate 204 to move horizontally close to the steel plate placed on the upper surface of the placement plate 201 and clamp and fix it horizontally. Then, the servo motor 210 is controlled to run, so that the output shaft of the servo motor 210 drives the worm gear 209 connected to it to rotate. Then, through the meshing relationship between the worm gear 209 and the worm wheel 208, the rotating rod 207 where the worm wheel 208 is located is driven to rotate. The rotating rod 207 drives the rotating arm 205 connected to it to rotate. Then, the rotating arms 205 on both sides move synchronously towards the steel plate. Then, the rotating arms 205 drive the clamping roller 206 to move towards the steel plate. Then, the clamping roller 206 presses down and clamps the steel plate on the placement plate 201. With the cooperation of servo motor 210 and dual-axis motor 310, the steel plate to be cut by the plasma cutter can be stably clamped and fixed in both horizontal and vertical directions. Then, the operation of electric push rod 210 is controlled so that the extension end of electric push rod 210 drives the placement plate 201 to rise to a suitable position under the guidance of slide cylinder 108 and slide column 109. This can prevent the plasma arc from easily cutting the cutting frame mechanism below the steel plate, which would cause damage to the cutting frame mechanism.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A cutting frame for a plasma cutting machine, comprising a placement plate (201), characterized in that: The upper surface of the placement plate (201) has two sliding grooves (202) symmetrically distributed around the vertical center of the placement plate (201). Each sliding groove (202) has a clamping plate seat (203) slidably arranged inside it. Each clamping plate seat (203) can be detachably installed with a clamping plate (204) on the side of the clamping plate seat (203) close to the vertical center of the placement plate (201). Each clamping plate seat (203) has two rotating arms (205) symmetrically distributed around the vertical center of the placement plate (201) rotatably arranged on the outer side via a rotating shaft. A clamping roller (206) is fixedly arranged between the ends of two horizontally adjacent rotating arms (205).

2. The cutting frame for a plasma cutting machine as described in claim 1, characterized in that: The clamping plate seat (203) is rotatably equipped with a rotating rod (207) inside. The ends of the rotating rods (207) are fixed to the adjacent rotating shafts by couplings. The outer arc surface of the rotating rods (207) is fixedly fitted with worm gears (208). The lower side of the clamping plate seat (203) is rotatably equipped with a worm (209). The worm (209) is fixed to the adjacent worm gears (208) by couplings.

3. The cutting frame for a plasma cutting machine as described in claim 2, characterized in that: Each of the clamping plate seats (203) is equipped with a servo motor (210) on the side away from the vertical center of the placement plate (201). The output shaft of the servo motor (210) is fixed to the adjacent worm gear (209) by a coupling.

4. The cutting frame for a plasma cutting machine as described in claim 1, characterized in that: The lower surface of each clamping plate (203) is fixedly provided with a guide seat (301). Each guide seat (301) has two sliding rods (302) symmetrically distributed around the vertical center of the placement plate (201) slidably disposed inside. A driven seat (303) is fixedly disposed at the end of each sliding rod (302) away from the vertical center of the placement plate (201). A driving seat (304) is fixedly disposed on the lower surface of the placement plate (201). The driving seat (304) has a sliding... Two drive rods (305) are symmetrically distributed around the vertical center of the placement plate (201). A rotating seat (306) is fixedly provided at the end of each drive rod (305) away from the vertical center of the placement plate (201). A connecting rod (307) is rotatably provided on both sides of the rotating seat (306). The end of the connecting rod (307) away from the drive seat (304) is rotatably connected to the adjacent driven seat (303). The middle parts of two adjacent connecting rods (307) are rotatably connected.

5. The cutting holder for a plasma cutting machine as described in claim 4, characterized in that: The drive base (304) is internally fixed with two support plates (308) symmetrically distributed around the vertical center of the placement plate (201). Each support plate (308) is rotatably equipped with an adjusting screw (309) in the middle. The adjusting screw (309) is threadedly connected to the adjacent drive rod (305). The drive base (304) is internally equipped with a dual-axis motor (310). The output shaft of the dual-axis motor (310) is fixed to the adjacent adjusting screw (309) by a coupling.

6. The cutting holder for a plasma cutting machine as described in claim 4, characterized in that: The placement plate (201) is provided with a base (101) on its lower side. Two guide rails (104) are fixedly provided on the upper surface of the base (101) and are symmetrically distributed around the vertical center of the base (101). Two sliding seats (105) are slidably provided between the two guide rails (104) and are symmetrically distributed around the vertical center of the base (101). A movable plate (106) is fixedly provided on the upper surface of each sliding seat (105). A sliding cylinder (108) is fixedly provided at each of the four corners of the upper surface of the movable plate (106). A sliding column (109) is slidably provided inside each sliding cylinder (108). The placement plate (201) is fixedly provided between the tops of the four adjacent sliding columns (109).

7. The cutting holder for a plasma cutting machine as described in claim 6, characterized in that: Two electric push rods (107) are fixedly installed on the upper surface of the base (101) and are symmetrically distributed around the vertical center of the base (101). The telescopic ends of the electric push rods (107) are respectively connected and fixed to the adjacent sliding seats (105). Electric push rods (110) are fixedly installed on the upper surface of the movable plate (106). The telescopic ends of the electric push rods (110) are respectively fixed to the adjacent drive seats (304) through couplings.

8. The cutting holder for a plasma cutting machine as described in claim 6, characterized in that: The base (101) is rotatably provided with multiple door panels (103) on its front side, and multiple support legs (102) are fixedly provided on the lower surface of the base (101).

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