A plasma cutting machine based on casting

Abstract

The utility model relates to cutting technical field discloses a kind of plasma cutting machines based on casting, including pedestal and opposite screw module, two slide platforms of opposite screw module are evenly installed with plasma torch, the upper surface of pedestal is fixedly installed with support frame, support frame rotatably installs upper swing arm and lower swing arm, upper swing arm is fixedly installed with opposite screw module, and electric push rod is installed between the lower end of upper swing arm and pedestal by rotating seat, and elastic component for swinging lower swing arm is installed between upper swing arm and pedestal, and the end of lower swing arm away from support frame is fixedly installed with pressing piece for compacting casting;Three pairs of lower roller pieces are fixedly installed on the upside of pedestal, and power component for driving middle pair of lower roller pieces is installed on the downside of pedestal.The utility model can complete fixed-length cutting or rough machining to both ends of casting in the process of once cutting;Power component can drive casting circumferential rotation, so that cutting efficiency is higher;The placement and extraction of casting are also more convenient.

Description

Technical Field

[0001] This utility model relates to the field of cutting technology, specifically to a plasma cutting machine for casting. Background Technology

[0002] Plasma cutting is a thermal cutting technology that uses the heat of a high-temperature plasma arc to separate metal materials.

[0003] In the casting and processing field, when performing fixed-length cutting or rough machining of both ends of mass-produced castings such as cylindrical and cylindrical parts, the traditional process often uses a handheld plasma spray gun with clamps for fixation. Operators need to manually adjust the position of the clamps to fix the castings, and then use the handheld spray gun to complete the cutting along the predetermined trajectory. In batch operations, the castings need to be clamped repeatedly, which takes a long time and results in low overall processing efficiency. In addition, the cutting error of the handheld spray gun is relatively large and the labor intensity is high.

[0004] Therefore, in order to solve the above problems, a plasma cutting machine for casting is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a plasma cutting machine for casting, which can facilitate efficient cutting of castings, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A plasma cutting machine for casting includes a base and a counter-rotating screw module. Plasma guns are mounted on both slides of the counter-rotating screw module. A support frame is fixedly mounted on the upper surface of the base. An upper swing arm and a lower swing arm are rotatably mounted on the support frame. The upper swing arm is located above the lower swing arm, and the counter-rotating screw module is fixedly mounted on the upper swing arm. An electric push rod is mounted between the lower end of the upper swing arm and the base via a rotating seat. An elastic component for swinging the lower swing arm is installed between the upper swing arm and the base. A pressing component for pressing the casting is fixedly mounted on the end of the lower swing arm away from the support frame. Three pairs of lower rollers for placing the casting are fixedly mounted on the upper side of the base. A power component for driving the middle pair of lower rollers is mounted on the lower side of the base. The pressing component is located above the middle pair of lower rollers.

[0007] Specifically, the power assembly includes a synchronous pulley, a synchronous belt, and a servo motor. The servo motor is fixedly installed on the lower side of the base. Synchronous pulleys are fixedly installed on the roller ends of the middle pair of lower roller components and the output end of the servo motor. Each synchronous pulley has two annular toothed grooves. There are two synchronous belts distributed in a V-shape. The synchronous belts are respectively fitted into the aligned annular toothed grooves. The base has through holes for the synchronous belts to pass through.

[0008] Specifically, the elastic component includes a steel cable and a tension spring, with the steel cable suspended between the upper and lower swing arms and the tension spring suspended between the lower swing arm and the base.

[0009] Specifically, the pressing component includes a support plate and an upper roller component. The lower swing arm is fixedly mounted with a support plate at the end away from the support frame, and a pair of upper roller components are fixedly mounted on the lower side of the support plate.

[0010] Furthermore, a limiting beam is fixedly installed on the support frame, and the limiting beam is located below the upper swing arm.

[0011] Furthermore, a switch is fixedly installed on the side wall of the support frame.

[0012] Furthermore, an armrest is fixedly installed at the upper end of the upper swing arm, and an adjustment button is fixedly installed on the armrest.

[0013] Furthermore, the surfaces of both the upper and lower rollers are provided with anti-slip mesh patterns.

[0014] Compared with the prior art, the beneficial effects of this utility model are: High cutting efficiency: Compared with the traditional handheld plasma spray gun cutting method, the fixed length cutting or rough machining of both ends of the casting can be completed in one cutting process; the opposing screw module can adjust the distance between the two plasma spray guns to adapt to the cutting needs of different casting lengths; in addition, the power component can drive the casting to rotate circumferentially, and the casting rotates continuously during the cutting process, making the cutting more uniform and faster.

[0015] Convenient cutting operation: Through the cooperation of the upper swing arm, lower swing arm and elastic component, when the opposing screw module swings the plasma spray gun downward, the elastic component can press the pressing part onto the casting first. After the opposing screw module returns to its upward position, the pressing part can also return to its upward position, avoiding the tedious operation of the clamps and making it convenient to place and remove the casting. Attached Figure Description

[0016] Figure 1 This is a schematic front view of the structure of this utility model; Figure 2 This is a partial sectional view of the structure of the elastic component of this utility model; Figure 3 This is a schematic left view of the structure of this utility model; Figure 4 This is an enlarged schematic diagram of the structure of the power component of this utility model; Figure 5 This is an enlarged schematic diagram of the pressing part of this utility model.

[0017] In the diagram: 1 Support frame, 2 Upper swing arm, 3 Electric push rod, 4 Elastic component, 41 Steel cable, 42 Tension spring, 5 Lower swing arm, 6 Power component, 61 Synchronous pulley, 62 Synchronous belt, 63 Servo motor, 7 Base, 8 Lower roller assembly, 9 Pressing component, 91 Support plate, 92 Upper roller assembly, 10 Plasma spray gun, 11 Opposing lead screw module, 12 Limit beam, 13 Switch, 14 Adjustment button, 15 Handrail, 16 Casting. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1 and Figure 3 This utility model provides a technical solution: A plasma cutting machine for casting includes a base 7 and a counter-rotating screw module 11. Both slides of the counter-rotating screw module 11 are equipped with plasma spray guns 10. The counter-rotating screw module 11 is preferably an electrically powered counter-rotating screw module, which is an existing component with a servo motor, a bidirectional screw, two screw nuts and two slides. When the counter-rotating screw module 11 is working, the two slides can move in opposite directions (closer or farther apart), thereby translating the two plasma spray guns 10 in opposite directions and changing the cutting distance.

[0020] When in use, the plasma spray gun 10 is used in conjunction with an external power supply and gas cylinder. The power supply provides a high DC voltage to excite the gas to ionize and form a plasma arc, and the gas cylinder is used to transport the ionized gas and auxiliary gas.

[0021] A support frame 1 is fixedly installed on the upper surface of the base 7. The support frame 1 is rotatably mounted with an upper swing arm 2 and a lower swing arm 5 via a rotating shaft. The upper swing arm 2 is located above the lower swing arm 5. An opposing lead screw module 11 is fixedly installed on the upper swing arm 2. An electric push rod 3 is installed between the lower end of the upper swing arm 2 and the base 7 via a rotating seat. The electric push rod 3 can extend and retract, thereby swinging the right end of the upper swing arm 2. With the rotating shaft as the center, the opposing lead screw module 11 at the left end of the upper swing arm 2 can have two working modes: lifting and resetting, and downward operation.

[0022] An elastic component 4 for swinging the lower swing arm 5 is installed between the upper swing arm 2 and the base 7. A pressing component 9 for pressing the casting 16 is fixedly installed at the end of the lower swing arm 5 away from the support frame 1. When the opposing screw module 11 swings downward, the elastic component 4 can pull the lower swing arm 5 downward, thereby pressing the pressing component 9 onto the casting 16 to assist in positioning the casting 16. When the opposing screw module 11 swings upward, the elastic component 4 can pull the lower swing arm 5 upward, thereby lifting the pressing component 9 and releasing the auxiliary positioning of the casting 16.

[0023] Three pairs of lower rollers 8 for placing castings 16 are fixedly installed on the upper side of the base 7. The lower rollers 8 are existing components consisting of rollers and roller seats. The three pairs of lower rollers 8 can provide a longer support area, which is beneficial for placing castings 16. A power assembly 6 for driving the middle pair of lower rollers 8 is installed on the lower side of the base 7. The pressing member 9 is located above the middle pair of lower rollers 8. The power assembly 6 can provide rotational power to the middle pair of lower rollers 8, so that the castings 16 can rotate circumferentially.

[0024] Please see Figure 4 The specific structure of power component 6 is as follows: The power assembly 6 includes a synchronous pulley 61, a synchronous belt 62, and a servo motor 63. The servo motor 63 is fixedly installed on the lower side of the base 7. The roller ends of the middle pair of lower roller components 8 and the output end of the servo motor 63 are both fixedly installed with synchronous pulleys 61. Each synchronous pulley 61 has two annular toothed grooves. There are two synchronous belts 62 distributed in a V-shape. The synchronous belts 62 are respectively fitted into the aligned annular toothed grooves. The base 7 has through holes for the synchronous belts 62 to pass through.

[0025] Synchronous pulley 61 and synchronous belt 62 are existing components. Synchronous pulley 61 has annular tooth grooves, and correspondingly, synchronous belt 62 has matching convex teeth. When servo motor 63 rotates the lower synchronous pulley 61, it can drive the synchronous pulleys 61 at the ends of the two rollers respectively after being driven by the two synchronous belts 62, thereby synchronously rotating the rollers in the two lower roller components 8.

[0026] Please see Figure 2 The specific structure of elastic component 4 is as follows: The elastic component 4 includes a steel cable 41 and a tension spring 42. The steel cable 41 is hung between the upper swing arm 2 and the lower swing arm 5. One to three steel cables 41 can be installed to meet the upward pulling force requirement. The tension spring 42 is hung between the lower swing arm 5 and the base 7. The tension spring 42 gives the lower swing arm 5 a downward swinging force.

[0027] Driven by the electric push rod 3, when the left end of the upper swing arm 2 swings upward to reset, the steel cable 41 can pull the lower swing arm 5 upward, and at the same time stretch the tension spring 42; when the left end of the upper swing arm 2 swings downward after being driven by the electric push rod 3, the tension spring 42 can pull the lower swing arm 5 downward until the pressing part 9 presses the casting 16; as the left end of the upper swing arm 2 continues to move downward, the steel cable 41 can bend adaptively, and the lower swing arm 5 will not continue to swing downward until the plasma spray gun 10 reaches the cutting station close to the casting.

[0028] Please see Figure 5 The specific structure of the pressing component 9 is as follows: The pressing component 9 includes a support plate 91 and an upper roller 92. The upper roller 92 is also an existing component consisting of a roller and a roller seat. The support plate 91 is fixedly installed at the end of the lower swing arm 5 away from the support frame 1. A pair of upper rollers 92 are fixedly installed on the lower side of the support plate 91. When the upper rollers 92 press the casting 16, the casting 16 can also rotate circumferentially.

[0029] The support frame 1 is fixedly installed with a limiting beam 12, which is located below the upper swing arm 2. The shape of the upper surface of the limiting beam 12 is set according to the swing amplitude of the upper swing arm 2 to ensure that when the left end of the upper swing arm 2 swings down, the plasma spray gun 10 can accurately reach the position close to the casting 16; and when the left end of the upper swing arm 2 swings up, the distance between the lower end of the plasma spray gun 10 and the upper side of the casting 16 is 20 cm to avoid excessive reciprocating swing stroke, which would increase the operation time.

[0030] A switch 13 is fixedly installed on the side wall of the support frame 1. When the lower swing arm 5 swings down to the bottom position, the switch 13 will be pressed, thereby energizing the servo motor 63 and the plasma spray gun 10 will also work at the same time. That is, when the pressing part 9 presses the casting 16, the power component 6 will rotate the casting 16 through the middle pair of lower roller parts 8, and the plasma spray gun 10 will spray out a plasma arc for cutting. When the lower swing arm 5 swings up to reset, the switch 13 will reset, thereby de-energizing the servo motor 63 and stopping the plasma spray gun 10 from spraying.

[0031] A handrail 15 is fixedly installed on the upper end of the upper swing arm 2. An adjustment button 14 is fixedly installed on the handrail 15. The handrail 15 makes it easy to hold the entire equipment and is convenient to carry and transfer. The opposing lead screw module 11 is electrically connected to the adjustment button 14. The distance between the two plasma spray guns 10 can be changed by adjusting the button 14 to adapt to the cutting needs of castings of different lengths.

[0032] The surfaces of the upper roller 92 and the lower roller 8 are both provided with anti-slip mesh patterns, which can ensure that the middle pair of lower rollers 8 do not slip when rotating the casting 16, and also prevent the casting 16 from moving along the axial direction, thus ensuring the smooth progress of the cutting operation.

[0033] The opposing lead screw module 11, switch 13, and servo motor 63 are electrically connected to the external control cabinet. The control cabinet is an existing component with a power supply, PLC controller, relays, and human-machine interface, used to coordinate the actions of various components.

[0034] The working principle of this embodiment: During the preparation stage, the casting 16 is placed on the three pairs of lower rollers 8 on the base 7. The operator holds the handle 15 and presses the adjustment button 14 to power on the opposing lead screw module 11 and adjust the distance between the two plasma spray guns 10.

[0035] During the cutting stage, the electric push rod 3 is extended at a constant speed under the control of the control cabinet, and the upper swing arm 2 swings. During this process, the steel cable 41 does no work, and the tension spring 42 pulls the lower swing arm 5 downward, so that the pressing part 9 presses the casting 16 before cutting, thereby achieving auxiliary positioning of the casting. When the lower swing arm 5 swings down to the bottom position, the switch 13 is pressed, the servo motor 63 is powered on and started, and drives the middle pair of lower roller parts 8 to rotate through the synchronous pulley 61 and the synchronous belt 62, thereby driving the casting 16 to rotate circumferentially. At the same time, the plasma spray gun 10 sprays plasma arc to perform the operation until the two ends of the casting 16 are cut.

[0036] During the cutting completion stage, the electric push rod 3 gradually shortens and resets, causing the left end of the upper swing arm 2 to swing upward and reset. The steel cable 41 straightens and performs work, lifting the lower swing arm 5 and lengthening the tension spring 42. At this time, the switch 13 resets, thereby de-energizing the servo motor 63 and stopping the plasma spray gun 10 from spraying. Meanwhile, the pressing part 9 releases the auxiliary positioning of the casting 16, making it easier to remove the casting 16 of a fixed length.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A plasma cutting machine for casting, characterized in that: The system includes a base (7) and a counter-screw module (11). Both slides of the counter-screw module (11) are equipped with plasma spray guns (10). A support frame (1) is fixedly installed on the upper surface of the base (7). An upper swing arm (2) and a lower swing arm (5) are rotatably installed on the support frame (1). The upper swing arm (2) is located above the lower swing arm (5). The counter-screw module (11) is fixedly installed on the upper swing arm (2). An electric push rod (3) is installed between the lower end of the upper swing arm (2) and the base (7) through a rotating seat. An elastic component (4) for swinging the lower swing arm (5) is installed between the upper swing arm (2) and the base (7). A pressing component (9) for pressing the casting (16) is fixedly installed at the end of the lower swing arm (5) away from the support frame (1). Three pairs of lower rollers (8) for placing castings (16) are fixedly installed on the upper side of the base (7), and a power assembly (6) for driving the middle pair of lower rollers (8) is installed on the lower side of the base (7). The pressing member (9) is located above the middle pair of lower rollers (8).

2. The plasma cutting machine for casting according to claim 1, characterized in that: The power assembly (6) includes a synchronous pulley (61), a synchronous belt (62), and a servo motor (63). The servo motor (63) is fixedly installed on the lower side of the base (7). The roller ends of the middle pair of lower roller components (8) and the output end of the servo motor (63) are both fixedly installed with synchronous pulleys (61). Each synchronous pulley (61) has two annular toothed grooves. There are two synchronous belts (62) distributed in a V-shape. The synchronous belts (62) are respectively fitted into the aligned annular toothed grooves. The base (7) has through holes for the synchronous belts (62) to pass through.

3. The plasma cutting machine for casting according to claim 1, characterized in that: The elastic component (4) includes a steel cable (41) and a tension spring (42). The steel cable (41) is suspended between the upper swing arm (2) and the lower swing arm (5), and the tension spring (42) is suspended between the lower swing arm (5) and the base (7).

4. A plasma cutting machine for casting according to claim 1, characterized in that: The pressing component (9) includes a support plate (91) and an upper roller component (92). The lower swing arm (5) is fixedly mounted with the support plate (91) at one end away from the support frame (1). A pair of upper roller components (92) are fixedly mounted on the lower side of the support plate (91).

5. A plasma cutting machine for casting according to claim 1, characterized in that: The support frame (1) is fixedly installed with a limiting beam (12), which is located below the upper swing arm (2).

6. A plasma cutting machine for casting according to claim 1, characterized in that: A switch (13) is fixedly installed on the side wall of the support frame (1).

7. A plasma cutting machine for casting according to claim 1, characterized in that: The upper end of the upper swing arm (2) is fixedly equipped with a handrail (15), and the handrail (15) is fixedly equipped with an adjustment button (14).

8. A plasma cutting machine for casting according to claim 4, characterized in that: The surfaces of the upper roller (92) and the lower roller (8) are both provided with anti-slip mesh patterns.

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