Accurate lifting structure for cutting gun of plasma cutting machine

Abstract

The utility model relates to the technical field of heavy industry machinery, in particular to a plasma cutting machine cutting gun accurate lifting structure which comprises a cylinder, a fixing seat is arranged on the left side of the outer wall of the cylinder, a long hole communicated with an inner cavity is formed in the right side of the outer wall face of the cylinder, and a motor is arranged on the top end wall of the cylinder. The upper inner wall and the lower inner wall of the cylinder are rotationally connected with a lead screw through bearings, the top end of the lead screw is fixedly connected with the output end of a motor through a coupler, and the outer wall of the lead screw is in threaded connection with a connecting block. Lifting of the cutting gun supporting base is achieved in the mode that the motor drives the lead screw, the problem that a traditional pneumatic lifting device is insufficient in precision due to air compressibility is effectively solved, the cutting gun can be accurately positioned at the needed height by accurately controlling the number of revolutions of the motor, the cutting precision is greatly improved, and the working efficiency is improved. The cutting device is particularly suitable for cutting precise metal parts and sheet materials, can remarkably reduce quality defects such as unevenness of cutting surfaces and non-uniform notch width, and improves the machining precision and quality of products.

Description

TECHNICAL FIELD

[0001] The utility model relates to heavy industry machinery technical field, concretely relates to a plasma cutting machine cutting torch precision lifting structure. BACKGROUND

[0002] In the modern metal processing field, plasma cutting technology is widely used because of its advantages such as high efficiency and ability to cut various metal materials. The lifting structure of the cutting torch of the plasma cutting machine plays a crucial role in cutting quality and precision.

[0003] At present, in many plasma cutting machines, pneumatic lifting devices are mostly used to realize the lifting operation of the cutting torch. The pneumatic lifting device mainly relies on compressed air to push the piston in the cylinder to move, and then drives the cutting torch to lift. However, this pneumatic lifting device has obvious defects. Because air is compressible, it is difficult to achieve accurate position control during pressure change, resulting in low lifting precision of the cutting torch. For example, when cutting some precision metal parts or thin plate materials that require high precision, the pneumatic lifting device is difficult to stably maintain the cutting torch at the ideal height position, which easily causes uneven cutting surface, uneven cutting width and other quality problems, seriously affecting the processing precision and quality of the product.

[0004] In addition, as the service life of the plasma cutting machine increases, the parts of the pneumatic lifting device will gradually wear out, such as the gap between the inner wall of the cylinder and the piston will become larger due to long-term friction, and the aging of the sealing element will cause gas leakage. These problems further exacerbate the position deviation during the lifting of the cutting torch, making the originally limited precision even lower. This not only reduces the working efficiency of the cutting equipment, increases the waste of materials, but also increases the production cost of the enterprise, and limits the further development of plasma cutting technology in the high-precision processing field.

[0005] In summary, the existing pneumatic lifting device of the cutting torch of the plasma cutting machine cannot meet the growing demand for high-precision cutting, and there is an urgent need for a new type of precise lifting structure to solve the above problems, improve the quality and precision of plasma cutting, and promote the technological progress of the metal processing industry. UTILITY MODEL CONTENT

[0006] The utility model discloses a plasma cutting machine cutting torch precision lifting structure to solve the above-mentioned problems.

[0007] In order to realize the above technical purpose and achieve the above technical effect, the utility model is realized by the following technical scheme:

[0008] The utility model provides a kind of plasma cutting machine cutting torch precision lifting structure, including cylinder, fixed seat is equipped on the left side of the outer wall of the cylinder, long hole is opened with inner cavity on the right side of the outer wall of the cylinder, motor is equipped on the top end wall of the cylinder, the upper and lower inner wall of the cylinder is rotatably connected with lead screw by bearing, and the top end of lead screw is fixedly connected with the output end of motor by coupling, the outer wall of lead screw is threadedly connected with connecting block, connecting rod is equipped on the right side wall of the connecting block, the right side end of connecting rod extends out of long hole, and connecting plate is equipped, cutting torch support seat is equipped on the right side wall of the connecting plate by connecting seat, stabilizing mechanism is further equipped on the outer wall of the cylinder.

[0009] Further, the stabilizing mechanism includes a base, the base is provided on the outer wall of the cylinder on the front and rear sides, a sliding groove is formed on the outer wall surface of the base, a sliding block is slidably connected in the sliding groove, a side plate is provided on the outer wall of the sliding block, and the outer wall of the side plate is fixedly connected with the front and rear end walls of the connecting plate.

[0010] Further, the sliding block can adopt a dovetail-shaped sliding block structure.

[0011] Further, the outer ring of the bearing is fixedly connected with the inner wall of the cylinder through a bearing seat, and the inner ring of the bearing is connected with the outer wall of the lead screw in interference fit.

[0012] Further, a plurality of screw holes are formed through the outer wall of the fixed seat.

[0013] The utility model has the advantages that:

[0014] The utility model adopts the mode that motor drives lead screw to realize the lifting of cutting torch support seat, effectively overcomes the precision deficiency problem caused by the compressibility of air of traditional pneumatic lifting device, can accurately position cutting torch at the required height by accurately controlling the number of revolutions of motor, greatly improves cutting precision, is especially suitable for cutting of precision metal parts and sheet materials, can significantly reduce quality defects such as unevenness of cutting surface and unevenness of cutting width, and improves processing precision and quality of products.

[0015] Compared with the case that the precision of pneumatic lifting device seriously decreases due to component wear after the service life increases, the mechanical transmission components such as lead screw and connecting block of the structure have small wear under normal maintenance, can maintain stable transmission performance and positioning precision for a long time, reduces the demand for frequent adjustment or replacement of components due to equipment aging, ensures the cutting precision stability of plasma cutting equipment in the long-term use process, and reduces the adverse effects on production caused by precision fluctuation.

[0016] In the cutting gun lifting process, the connecting plate drives the side plate and the sliding block to slide in the sliding groove, which provides lateral support and guidance for the cutting gun support seat, effectively prevents the cutting gun from shaking or deviating during lifting, and further enhances the stability and reliability of the cutting gun movement. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings described in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Fig. 1 The present application is a structural schematic diagram.

[0019] Fig. 2 The present application is a structural schematic diagram.

[0020] In the drawings, the component list represented by each number is as follows:

[0021] 1, cylinder, 2, fixed seat, 3, long hole, 4, motor, 5, bearing, 6, lead screw, 7, connecting block, 8, connecting rod, 9, connecting plate, 10, connecting seat, 11, cutting gun support seat, 12, base, 13, sliding groove, 14, sliding block, 15, side plate. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] Reference Figs. 1-2As shown, a kind of plasma cutting machine cutting torch precision lifting structure, including cylinder 1, fixed seat 2 is equipped on the left side of the outer wall of cylinder 1, long hole 3 is opened in the outer wall surface right side of cylinder 1 and communicates with inner cavity, motor 4 is equipped on the top end wall of cylinder 1, and the upper and lower inner walls of cylinder 1 are rotatably connected with lead screw 6 by bearing 5, and the top end of lead screw 6 is fixedly connected with the output end of motor 4 by coupling, and the outer wall of lead screw 6 is threadedly connected with connecting block 7, connecting rod 8 is equipped on the right side wall of connecting block 7, the right side end of connecting rod 8 extends out of long hole 3, and connecting plate 9 is equipped, and cutting torch support 11 is equipped on the right side wall of connecting plate 9 by connecting seat 10, and stabilizing mechanism is further equipped on the outer wall of cylinder 1.

[0024] Further, the stabilizing mechanism includes base 12, which is provided on the outer wall of cylinder 1 on the front and rear sides, and the outer wall surface of base 12 is provided with sliding groove 13, and sliding block 14 is slidably connected in sliding groove 13, and sliding block 14 can adopt dovetail sliding block structure, and side plate 15 is provided on the outer wall of sliding block 14, and the outer wall of side plate 15 is fixedly connected with the front and rear end walls of connecting plate 9, so that side plate 15 and sliding block 14 are slid in sliding groove 13 while connecting plate 9 is lifted and moved, and the cutting torch support 11 is stabilized, so that the cutting torch support 11 is more stable when being lifted and moved.

[0025] Further, the outer ring of bearing 5 is fixedly connected with the inner wall of cylinder 1 by bearing seat, and the inner ring of bearing 5 is connected with the outer wall of lead screw 6 in interference fit, so that lead screw 6 is fixed by bearing 5, and lead screw 6 is conveniently rotated by bearing 5.

[0026] Further, a plurality of screw holes are formed through the outer wall of fixed seat 2, and the device is installed on the mounting seat of beam guide rail by welding or bolt tightening installation mode through fixed seat 2.

[0027] Through the personnel in the art, all electrical components and parts in the case are general standard parts or parts known to the person skilled in the art, and the structure and principle are known to the person skilled in the art through technical manual or through conventional experimental method, and the type is adapted to the scheme and can normally operate, all electrical components in the case and the power supply adapted thereto are connected by wire, and according to the actual situation, appropriate controller is selected to meet the control requirement, and the specific connection and control sequence should be referred to the working principle, the working order of each electrical component is completed, and the detailed connection means is the public known technology, and the electrical control is not described.

[0028] One specific application of the embodiment is:

[0029] Before use, first need to beam guide rail mounting seat for comprehensive inspection and cleaning, to ensure that the surface is smooth, no obvious deformation or damage, so as to provide stable and accurate basis for the subsequent installation of the device, the device through the fixed seat 2 by welding or bolted installation in the mounting seat of the beam guide rail, in the welding process, need to strictly control the welding process parameters, such as welding current, voltage and welding speed, to ensure that the welding is firm and no false welding, welding condition; If using bolted way, then according to the design requirements to select the appropriate size of the bolt, and according to the specified tightening torque is uniformly tightened, to ensure that the fixed seat 2 and mounting seat tightly connected, so that the whole device in the subsequent operation will not be due to installation loose and produce displacement or shaking, after the completion of the mounting seat connection, the cutting torch carefully installed in the outer wall of the cutting torch support seat 11;

[0030] When preparing to cut operation, start the motor 4, the motor 4 starts, its output shaft starts to rotate, drive screw 6 rotation, screw 6 and connecting block 7 between the threaded cooperation, with the rotation of the screw 6, connecting block 7 will produce linear motion along the axial direction of the screw 6, the linear motion of connecting block 7 will promote the connecting rod 8, connecting plate 9, connecting seat 10 and cutting torch support seat 11 to move up or down, in this process, the direction of rotation of the motor 4 determines the lifting direction of the cutting torch support seat 11, by accurately controlling the forward and reverse rotation of the motor 4 to realize the lifting and lowering operation of the cutting torch support seat 11, at the same time, in the process of lifting and lowering of the cutting torch support seat 11, the connecting plate 9 will move together with it, since the side plate 15 and the sliding block 14 are fixed on the connecting plate 9, and the sliding block 14 is placed in the sliding groove 13, so when the connecting plate 9 moves, the side plate 15 and the sliding block 14 will slide in the sliding groove 13, the sliding groove 13 has good straightness and precision, which provides stable lateral support and guide for the cutting torch support seat 11, effectively limits the lateral displacement and shaking of the cutting torch support seat 11 in the lifting process, so that the cutting torch support seat 11 is more stable in lifting and moving, thereby ensuring that the cutting torch can accurately rise or fall along the predetermined vertical trajectory, in addition, through the advanced control system to accurately control the number of revolutions of the motor 4, the lifting height and speed of the cutting torch can be accurately set according to the cutting process requirements and the characteristics of the cut material, to realize the high precision control of the lifting and moving of the cutting torch, and provide a strong guarantee for high quality plasma cutting operation, in the whole device operation process, also should pay close attention to the running state of the motor 4, and the working condition of the transmission parts such as screw 6 and connecting block 7, regular maintenance, such as adding lubricating oil, checking the connection tightness, etc., to ensure the long-term stable and reliable operation of the device.

[0031] Of course, the above description is not a limitation of the utility model, the utility model is not limited to the above examples, the ordinary skilled in the art, within the scope of the utility model, the changes, changes, additions or replacement made, should belong to the protection scope of the utility model.

Claims

1. A precision lifting structure for a plasma cutting torch, characterized in that: It comprises a cylinder (1), The outer wall of the cylinder (1) is provided with a fixed seat (2) on the left side, and a long hole (3) communicating with the inner cavity is formed in the right side of the outer wall surface of the cylinder (1), a motor (4) is arranged on the top end wall of the cylinder (1), a lead screw (6) is rotatably connected to the upper and lower inner walls of the cylinder (1) through a bearing (5), the top end of the lead screw (6) is fixedly connected with the output end of the motor (4) through a shaft coupling, a connecting block (7) is threadedly connected to the outer wall of the lead screw (6), a connecting rod (8) is arranged on the right side wall of the connecting block (7), the right side end of the connecting rod (8) extends out of the long hole (3), and a connecting plate (9) is arranged, a cutting gun support (11) is arranged on the right side wall of the connecting plate (9) through a connecting seat (10), and a stabilizing mechanism is further arranged on the outer wall of the cylinder (1).

2. The precision lifting structure of a cutting torch of a plasma cutting machine according to claim 1, characterized in that: The stabilizing mechanism comprises a base (12), the base (12) is arranged on the outer wall of the cylinder (1) on the front and rear sides, a sliding groove (13) is formed in the outer wall surface of the base (12), a sliding block (14) is slidably connected in the sliding groove (13), a side plate (15) is arranged on the outer wall of the sliding block (14), and the outer wall of the side plate (15) is fixedly connected with the front and rear end walls of the connecting plate (9).

3. The precision lifting structure of a cutting torch of a plasma cutting machine according to claim 2, characterized in that: The sliding block (14) can adopt a dovetail sliding block structure.

4. The precision lifting structure of a cutting torch of a plasma cutting machine according to claim 1, characterized in that: The outer ring of the bearing (5) is fixedly connected with the inner wall of the cylinder (1) through a bearing seat, and the inner ring of the bearing (5) is connected with the outer wall of the lead screw (6) in interference fit.

5. The precision lifting structure of a cutting torch of a plasma cutting machine according to claim 1, characterized in that: A plurality of screw holes are formed through the outer wall of the fixed seat (2).

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