Plasma numerical control cutting machine

Abstract

The utility model discloses a plasma numerical control cutting machine. The plasma numerical control cutting machine mainly comprises a sliding mechanical arm, a plasma cutter, a cutting platform and a clamping and positioning mechanism. A multi-stage telescopic air cylinder and a clamping assembly are arranged in the clamping and positioning mechanism, the multi-stage telescopic air cylinder stretches out and draws back through internal air pressure changes and drives the clamping assembly to clamp and position a plate on the cutting platform, and the plasma cutter is driven by the sliding mechanical arm to move so that the plate can be cut into the needed shape. According to the plate cutting device, the problem that irregular plates are inconvenient to clamp and position in the plate cutting operation is solved; the working efficiency and the product quality can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the cutting field, in particular to a kind of plasma numerical control cutting machine. BACKGROUND

[0002] In modern shipbuilding industry, steel plate and other plate materials need to be cut into the shape required by ship design before the manufacture and installation of the ship body, and plasma cutting machine is usually used for cutting operation in the cutting of plate materials.In the usual plate cutting line, plate materials can be fed and positioned by conveying belt for feeding and discharging, and the plate cutting shape is the same, which can further improve efficiency, and the size and shape of plate materials used in shipbuilding process are different, so only separate cutting mode can be used for operation;And this operation mode directly places the cut plate on the cutting platform, and uses numerical control technology and sensor to automatically identify the plate displacement and plasma cutter for cutting operation, but the lack of clamping and positioning of plate materials may cause vibration and slight displacement of plate materials during cutting, thereby reducing the plate cutting precision or easily producing burr.

[0003] Therefore, the present application designs a kind of plasma numerical control cutting machine capable of automatically clamping and positioning multiple groups of plate materials with different shapes. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a kind of plasma numerical control cutting machine, to solve the above-mentioned problems.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of plasma numerical control cutting machine, including sliding mechanical arm, plasma cutter, cutting platform and the clamping and positioning mechanism for assisting clamping and positioning plate materials;Plasma cutter is slidably connected with sliding mechanical arm, and the both ends of sliding mechanical arm are electrically slidably connected with cutting platform, and clamping and positioning mechanism is arranged in the inside of cutting platform;

[0006] Clamping and positioning mechanism is provided with multistage telescopic cylinder and clamping assembly, and the lower end of clamping assembly is inserted with the end portion of multistage telescopic cylinder, and multistage telescopic cylinder is telescoped by internal gas pressure change and drives clamping assembly to clamp and position plate material on cutting platform, and plasma cutter is displaced by the driving of sliding mechanical arm to cut plate material into the required shape.

[0007] The multi-stage telescopic air cylinder is expanded and contracted in the change of internal air pressure, and the clamping assemblies on both sides of the cutting platform are driven to move close to each other in the contraction, thereby clamping the plate. The design of using the multi-stage telescopic air cylinder as the power source of the clamping assembly makes the multi-stage telescopic air cylinder corresponding to the clamping assembly in contact with the plate unable to continue to contract, and the clamping assembly not in contact with the plate continues to move under the driving of the multi-stage telescopic air cylinder, thereby effectively clamping different plates and plates with irregular shapes. The vibration of the plate during cutting can be effectively reduced, and the cutting operation efficiency and production quality are improved.

[0008] Further, the cutting platform is provided with electric sliding rails at both ends, the sliding mechanical arm is electrically and slidably connected with the cutting platform through the electric sliding rails, and the sliding mechanical arm and the plasma cutter are controlled through the numerical controller. The cutting platform comprises an outer frame and a cross frame, the lower end of the outer frame is bolted to the ground, the cross frame is welded and fixed to the inner wall of the outer frame at both ends, and the cross frame is provided in parallel with a plurality of groups of same spacing; the electric sliding rails are arranged on both sides of the outer frame. The lower part of the cross frame is provided with a sliding groove, and the clamping assembly is slidably connected with the cross frame through the sliding groove.

[0009] Further, the clamping and positioning mechanism further comprises a central cylinder and a bidirectional air pump; one end of the central cylinder is fixedly connected with the inner wall of the outer frame, the other end of the central cylinder penetrates through the outer frame, the lower end of the bidirectional air pump is bolted to the ground, the output end of the bidirectional air pump is in communication with the inside of the central cylinder, the multi-stage telescopic air cylinder is provided with a plurality of groups positioned between the cross frames, and one end of the multi-stage telescopic air cylinder is in communication with the central cylinder. The clamping assembly comprises a connecting rod, a sliding rod, a supporting rod and a clamp; the lower end of the connecting rod is inserted into the multi-stage telescopic air cylinder, the upper end of the connecting rod is fixedly connected with the sliding rod, the sliding rod is slidably connected with the cross frame through the sliding groove at both ends, the lower end of the supporting rod is inserted into the upper end of the sliding rod, the upper end of the supporting rod is fixedly connected with the lower part of the clamp, and the clamp clamps and fixes the plate on the cross frame.

[0010] Further, the clamp comprises two groups of clamping plates arranged symmetrically, a rotating rod, a limiting rod, a connecting handle, and a separately arranged driving rod, a sliding sleeve and a shell; one end of the rotating rod and the limiting rod is respectively hinged to the rear end of the clamping plate, the other end of the limiting rod is hinged to the inner wall of the shell, the middle part of the rotating rod is hinged to the inner wall of the shell, the other end of the rotating rod is hinged to the connecting handle, and the ends of the two groups of connecting handles away from the rotating rod are respectively hinged to the upper and lower ends of the driving rod; the rear end of the driving rod is slidably connected with the inner wall of the sliding sleeve, the rear end of the sliding sleeve is fixedly connected with the shell, the sliding sleeve is provided with a spring, one end of the spring is fixedly connected with the inner wall of the sliding sleeve, and the other end of the spring is fixedly connected with the driving rod.

[0011] When the plate material contacts the driving rod, the clamping device compresses the driving rod to displace and insert into the sliding sleeve, further drives the rotating rod to deflect through the connecting handle, pulls two sets of clamping plates to approach each other and clamps the plate material, so that the clamping device automatically clamps the plate material and automatically releases when the multi-stage telescopic cylinder is unfolded.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The utility model provides a kind of plasma numerical control cutting machine, and multi-stage telescopic cylinder is unfolded and shrinks in the change of internal air pressure, drives the clamping assembly of cutting platform two sides to approach displacement in shrink, further clamps plate material, by using multi-stage telescopic cylinder as the design of clamping assembly power source, so that the multi-stage telescopic cylinder corresponding to the clamping assembly after contact with plate material cannot continue to shrink, and the clamping assembly not contacted with plate material continues to move by the driving of multi-stage telescopic cylinder, further effectively clamps different plate material and the plate material of irregular shape;Plate material can effectively reduce vibration in cutting process, improve cutting operation efficiency and production quality. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole schematic view of the utility model a kind of plasma numerical control cutting machine;

[0015] Figure 2 It is a top view of the utility model a kind of plasma numerical control cutting machine;

[0016] Figure 3 It is a schematic view of the utility model a kind of plasma numerical control cutting machine clamping assembly;

[0017] Figure 4 It is a schematic view of the utility model a kind of plasma numerical control cutting machine clamping device;

[0018] Figure 5 It is a schematic view of the utility model a kind of plasma numerical control cutting machine clamping device;

[0019] Figure 6 It is a schematic view of the utility model a kind of plasma numerical control cutting machine sliding sleeve internal structure.

[0020] In the drawing: 1-sliding mechanical arm;2-plasma cutter;3-cutting platform;31-electric sliding rail;32-outer frame;33-cross frame;331-sliding groove;4-clamping positioning mechanism;41-central cylinder;42-bi-directional air pump;5-multi-stage telescopic cylinder;6-clamping assembly;61-connecting rod;62-sliding rod;63-supporting rod;64-clamping device;641-clamping plate;642-rotating rod;643-limiting rod;644-connecting handle;645-driving rod;646-sliding sleeve;647-housing;648-spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1 to 6 The utility model provides technical schemes as follows: a plasma numerical control cutting machine, including sliding mechanical arm 1, plasma cutting ware 2, cutting platform 3 and the clamping positioning mechanism 4 that carries out auxiliary clamping and positioning to plate material, plasma cutting ware 2 is connected with sliding mechanical arm 1 sliding, and the both ends of sliding mechanical arm 1 are electrically connected with cutting platform 3 sliding, and the clamping positioning mechanism 4 is arranged in the inside of cutting platform 3.

[0023] The clamping positioning mechanism 4 is provided with multistage telescopic cylinder 5 and clamping assembly 6, the lower end of clamping assembly 6 is inserted with the end of multistage telescopic cylinder 5, multistage telescopic cylinder 5 is telescopic through the change of internal air pressure and drives clamping assembly 6 to clamp and position the plate material on cutting platform 3, and plasma cutting ware 2 is displaced by the driving of sliding mechanical arm 1 and cuts the plate material into the required form.

[0024] Please refer to Figure 1 The both ends of cutting platform 3 are provided with electric slide rail 31, and sliding mechanical arm 1 is electrically connected with cutting platform 3 through electric slide rail 31, and both sliding mechanical arm 1 and plasma cutting ware 2 are controlled through numerical controller.

[0025] After placing the plate material on cutting platform 3, start clamping positioning mechanism 4, drive clamping assembly 6 to clamp and position the plate material through the contraction of multistage telescopic cylinder 5, then set specific cutting parameters on numerical controller, start sliding mechanical arm 1, so that sliding mechanical arm 1 drives plasma cutting ware 2 to cut the plate material, and after cutting all the plate materials, multistage telescopic cylinder 5 is expanded to release the clamping of clamping assembly 6 to the plate material, and then the plate material can be discharged.

[0026] Please refer to Figures 1 to 3 Cutting platform 3 includes outer frame 32 and cross frame 33, the lower end of outer frame 32 is bolted to the ground, and the both ends of cross frame 33 are welded and fixed to the inner wall of outer frame 32, and cross frame 33 is provided in parallel with several groups of same spacing; electric slide rail 31 is opened on the both sides of outer frame 32.

[0027] The horizontal frames 33 which are parallel to each other form the plate supporting surface of the upper part. When cutting operation is performed, the plate waste and non-metals generated by plasma cutting fall through the gaps between the horizontal frames 33, which facilitates the subsequent treatment of the waste and realizes automatic separation of the waste without affecting the quality of the plate.

[0028] As another embodiment, as shown in Figure 3 , the lower part of the horizontal frames 33 is provided with a sliding groove 331 on both sides, and the clamping assembly 6 is connected with the horizontal frames 33 through the sliding groove 331. Through the sliding connection of the clamping assembly 6 and the horizontal frames 33, support force is provided for the end of the multi-stage telescopic cylinder 5, which reduces the deformation of the multi-stage telescopic cylinder 5 caused by its own gravity.

[0029] As shown in Figure 3 , the clamping and positioning mechanism 4 further comprises a central cylinder 41 and a bidirectional air pump 42. One end of the central cylinder 41 is fixedly connected with the inner wall of the outer frame 32, and the other end of the central cylinder 41 penetrates through the outer frame 32. The lower end of the bidirectional air pump 42 is fixedly connected with the ground by bolts, and the output end of the bidirectional air pump 42 is in communication with the inside of the central cylinder 41. The multi-stage telescopic cylinder 5 is provided with a plurality of groups positioned between the horizontal frames 33, and one end of the multi-stage telescopic cylinder 5 is in communication with the central cylinder 41.

[0030] The bidirectional air pump 42 can extract and supplement gas in the central cylinder 41, thereby changing the internal pressure of the central cylinder 41. When it is necessary to clamp the plate, the bidirectional air pump 42 is started to reduce the internal pressure of the central cylinder 41, so that the multi-stage telescopic cylinder 5 in communication with the central cylinder 41 shrinks, and the shrinkage of the multi-stage telescopic cylinder 5 drives the horizontal displacement of the clamping device 64, thereby clamping the plate from two directions.

[0031] As shown in Figure 3 , the clamping assembly 6 comprises a connecting rod 61, a sliding rod 62, a supporting rod 63 and a clamping device 64. The lower end of the connecting rod 61 is inserted into the multi-stage telescopic cylinder 5, and the upper end of the connecting rod 61 is fixedly connected with the sliding rod 62. The sliding rod 62 is slidably connected with the horizontal frames 33 through the sliding grooves 331 on both ends. The lower end of the supporting rod 63 is inserted into the upper end of the sliding rod 62, and the upper end of the supporting rod 63 is fixedly connected with the lower part of the clamping device 64. The clamping device 64 clamps and fixes the plate on the horizontal frames 33.

[0032] The shrinkage of the multi-stage telescopic cylinder 5 drives the horizontal displacement of the sliding rod 62 along the sliding grooves 331 on the horizontal frames 33 through the connecting rod 61, and finally drives the horizontal displacement of the clamping device 64 through the supporting frame, thereby clamping the plate from two directions. When the clamping device 64 contacts with the plate, it is limited by the plate, so that the multi-stage telescopic cylinder 5 at this position stops shrinking, and the multi-stage telescopic cylinder 5 which is not limited continues to shrink until it is limited by the plate or completely shrinks, so that the clamping assembly 6 can clamp and position the plate with irregular shape, or clamp and position a plurality of plates arranged in a straight line.

[0033] As another embodiment, as shown in Figures 4 to 6 The clamping device 64 comprises two sets of clamping plates 641, rotating rods 642, limiting rods 643, connecting handles 644, and separately arranged driving rods 645, sliding sleeves 646, and a housing 647. The rear ends of the clamping plates 641 are hingedly connected to the rotating rods 642 and the limiting rods 643, respectively. The other end of the limiting rods 643 is hingedly connected to the inner wall of the housing 647. The middle part of the rotating rods 642 is hingedly connected to the inner wall of the housing 647. The other end of the rotating rods 642 is hingedly connected to the connecting handles 644. The ends of the connecting handles 644 away from the rotating rods 642 are hingedly connected to the upper and lower ends of the driving rods 645, respectively. The rear end of the driving rods 645 is slidingly connected to the inner wall of the sliding sleeves 646. The rear end of the sliding sleeves 646 is fixedly connected to the housing 647.

[0034] When the multi-stage telescopic cylinder 5 is contracted, the housing 647 is displaced along the horizontal plate direction under the force of the supporting rod 63. When the driving rods 645 are in contact with the side of the plate, they are slid inwardly to the sliding sleeves 646 under the pressure of the plate, thereby driving the connecting handles 644 to rotate and displace, thereby pulling the rotating rods 642 to rotate around the middle part as the axis, so that the clamping plates 641 present a circular motion downwardly. The limiting rods 643 are arranged to limit the circular motion of the clamping plates 641, so that they always maintain a parallel posture. The two clamping plates 641 are close to each other to clamp the plate. The rotating rods 642 are L-shaped rods.

[0035] Referring to Figure 6 The sliding sleeves 646 are provided with springs 648. One end of the springs 648 is fixedly connected to the inner wall of the sliding sleeves 646. The other end of the springs 648 is fixedly connected to the driving rods 645.

[0036] When the plate cutting is completed, the bidirectional air pump 42 inflates to increase the internal pressure of the central cylinder 41, so that the multi-stage telescopic cylinder is expanded, driving the clamping device 64 to displace horizontally in the reverse direction. The driving rods 645 lose the limitation of the plate. The springs 648 push the driving rods 645 to displace in the reverse direction, thereby pulling the rotating rods 642 to rotate in the reverse direction through the connecting handles 644, so that the clamping plates 641 are loosened to clamp the plate. The unloading can be performed.

[0037] Working principle: when cutting the plate, place the plate on the cutting platform 3. Start the bidirectional air pump 42 to make the multi-stage telescopic cylinder 5 contract, driving the clamping assemblies 6 on both sides to displace inwardly and close to each other. When the clamping device 64 is in contact with the side wall of the plate, the driving rods 645 displace to pull the upper and lower clamping plates 641 to close to each other to clamp and position the plate. Then, start the sliding mechanical arm 1 and the plasma cutter 2 to cut the plate according to the pre-set data. After cutting is completed, the bidirectional air pump 42 inflates to increase the internal pressure of the central cylinder 41, so that the multi-stage telescopic cylinder is expanded, driving the clamping device 64 to displace horizontally in the reverse direction. The clamping plates 641 are loosened to clamp the plate. The device returns to the initial state, and then the unloading operation can be performed.

[0038] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A numerically controlled plasma cutting machine, characterized in that, Including sliding mechanical arm (1), plasma cutter (2), cutting platform (3) and the clamping positioning mechanism (4) for the auxiliary clamping and positioning of plate material, the plasma cutter (2) is slidably connected with the sliding mechanical arm (1), the sliding mechanical arm (1) is electrically and slidably connected with the cutting platform (3) at both ends, and the clamping positioning mechanism (4) is arranged in the cutting platform (3). A plurality of multistage telescopic cylinders (5) and clamping assemblies (6) are arranged in the clamping positioning mechanism (4), the lower end of the clamping assembly (6) is inserted with the end of the multistage telescopic cylinder (5), the multistage telescopic cylinder (5) is telescoped by internal gas pressure change and drives the clamping assembly (6) to clamp and position the plate material on the cutting platform (3), and the plasma cutter (2) is displaced by the driving of the sliding mechanical arm (1) to cut the plate material into the required shape.

2. The CNC plasma cutting machine of claim 1, wherein, The cutting platform (3) is provided with electric sliding rails (31) at both ends, the sliding mechanical arm (1) is electrically and slidably connected with the cutting platform (3) through the electric sliding rails (31), and the sliding mechanical arm (1) and the plasma cutter (2) are controlled through a numerical controller.

3. The CNC plasma cutting machine of claim 2, wherein, The cutting platform (3) comprises an outer frame (32) and a cross frame (33), the lower end of the outer frame (32) is bolted to the ground, the cross frame (33) is welded and fixed to the inner wall of the outer frame (32) at both ends, and a plurality of groups of the cross frame (33) are arranged in parallel with the same spacing; and the electric sliding rails (31) are arranged on both sides of the outer frame (32).

4. The CNC plasma cutting machine of claim 3, wherein, Sliding grooves (331) are arranged on both sides of the lower part of the cross frame (33), and the clamping assembly (6) is slidably connected with the cross frame (33) through the sliding grooves (331).

5. The CNC plasma cutting machine of claim 4, wherein, The clamping positioning mechanism (4) further comprises a central cylinder (41) and a bidirectional air pump (42), one end of the central cylinder (41) is fixedly connected with the inner wall of the outer frame (32), the other end of the central cylinder (41) penetrates through the outer frame (32), the lower end of the bidirectional air pump (42) is bolted to the ground, the output end of the bidirectional air pump (42) is in communication with the inside of the central cylinder (41), a plurality of groups of the multistage telescopic cylinders (5) are arranged between the cross frames (33), and one end of the multistage telescopic cylinder (5) is in communication with the central cylinder (41).

6. The CNC plasma cutting machine of claim 5, wherein, The clamping assembly (6) comprises a connecting rod (61), a sliding rod (62), a supporting rod (63) and a clamp (64), the lower end of the connecting rod (61) is inserted with the multistage telescopic cylinder (5), the upper end of the connecting rod (61) is fixedly connected with the sliding rod (62), the sliding rod (62) is slidably connected with the cross frame (33) at both ends through the sliding grooves (331), the lower end of the supporting rod (63) is inserted with the upper end of the sliding rod (62), the upper end of the supporting rod (63) is fixedly connected with the lower part of the clamp (64), and the clamp (64) clamps and fixes the plate material on the cross frame (33).

7. The CNC plasma cutting machine of claim 6, wherein, The clamping device (64) comprises two sets of clamping plates (641) arranged symmetrically, a rotating rod (642), a limiting rod (643), a connecting handle (644), and a separately arranged driving rod (645), a sliding sleeve (646) and a shell (647); one end of the rotating rod (642) and the limiting rod (643) is respectively hinged to the rear end of the clamping plate (641), the other end of the limiting rod (643) is hinged to the inner wall of the shell (647), the middle part of the rotating rod (642) is hinged to the inner wall of the shell (647), the other end of the rotating rod (642) is hinged to the connecting handle (644), and the other end of the two sets of connecting handles (644) away from the rotating rod (642) is respectively hinged to the upper and lower ends of the driving rod (645); the rear end of the driving rod (645) is slidingly connected with the inner wall of the sliding sleeve (646), and the rear end of the sliding sleeve (646) is fixedly connected with the shell (647).

8. The CNC plasma cutting machine of claim 7, wherein, A spring (648) is arranged in the sliding sleeve (646), one end of the spring (648) is fixedly connected with the inner wall of the sliding sleeve (646), and the other end of the spring (648) is fixedly connected with the driving rod (645).

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