A positioning laser cutting machine for stainless steel bars

Abstract

A positioning laser cutting machine for stainless steel bars disclosed by the present invention relates to the technical field of laser cutting, and includes a positioning mechanism and a cutting mechanism installed on the positioning mechanism. The positioning mechanism includes a cutting platform, on which a sliding frame is slidably installed. A moving slide bar is fixedly installed on the sliding frame, and an upper positioning frame and a lower positioning frame are symmetrically and slidably arranged on the moving slide bar. The upper positioning frame and the lower positioning frame are symmetrical about the first reference plane. A bidirectional lead screw is rotatably installed on the sliding frame, and two sections of threads with opposite helix directions are arranged on the bidirectional lead screw. The upper positioning frame and the lower positioning frame move synchronously, and the moving directions are opposite or away from each other. The present invention is suitable for laser cutting of heavy bar structures with various diameter sizes, realizes automatic transmission, cutting and blanking of bars, and has high working efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting, in particular to a positioning laser cutting machine for stainless steel bars. Background Art

[0002] There are several existing methods for cutting stainless steel rods, among which laser positioning cutting is a mature technology. A common method involves clamping the rod with a clamping assembly, rotating it with the help of a rotatable clamping assembly, and then using a relatively fixed laser cutter head for laser cutting. However, heavy, large-diameter stainless steel rods can be difficult to cut due to their weight. The heavy load caused by prolonged clamping and rotation can also lead to excessive cutting position deviations due to machine vibration during rotation, affecting the final product.

[0003] Therefore, the present invention provides a positioning laser cutting machine for stainless steel bars, which can cut heavy bars of different sizes by cutting the bars in a circular manner with a laser cutting head. Summary of the Invention

[0004] Aiming at the defects in the prior art, the present invention provides a positioning laser cutting machine for stainless steel bars to overcome the problems in the prior art.

[0005] The technical solution adopted by the present invention is: a positioning laser cutting machine for stainless steel bars, comprising a positioning mechanism and a cutting mechanism installed on the positioning mechanism, the positioning mechanism comprising a cutting platform, a slide is slidably mounted on the cutting platform, a moving slide is fixedly mounted on the slide, an upper positioning frame and a lower positioning frame are symmetrically slidably arranged on the moving slide, the upper positioning frame and the lower positioning frame are symmetrical about the first reference plane, a bidirectional screw is rotatably mounted on the slide, the bidirectional screw is provided with two sections of threads with opposite rotation directions, the upper positioning frame and the lower positioning frame move synchronously, and the moving direction Relative or back to back; a gear ring frame is rotatably installed on the cutting platform, and a fixed slide rod is fixedly installed on the cutting platform, and a lower support frame is slidably installed on the fixed slide rod, the lower support frame and the upper surface of the lower positioning frame are in the same horizontal plane, the first reference plane and the first longitudinal symmetry plane of the gear ring frame are in the same horizontal plane, the upper positioning frame, the lower positioning frame, and the lower support frame are symmetrical about the second reference plane, the second reference plane is vertically distributed with the first reference plane, the intersection of the second reference plane and the first reference plane is the axis of the gear ring frame, and the upper positioning frame, the lower positioning frame, and the lower support frame are in a "V" shape.

[0006] Furthermore, a slide is installed on the cutting platform, which is slidably connected to the support and clearance plate. An inclined section is provided at each end of the support and clearance plate, and the support and clearance plate is connected to the cutting platform through a clearance spring. Under normal circumstances, the upper surface of the support and clearance plate is in the same horizontal plane as the upper surfaces of the lower support frame and the lower positioning frame.

[0007] Furthermore, a push plate is installed on the lower positioning frame, and the push plate corresponds to the position of the gear ring frame. A vertical plate is installed on the cutting platform, and the vertical plate is located between the gear ring frame and the lower support frame.

[0008] Furthermore, a positioning screw is rotatably installed on the cutting platform, the positioning screw is threadedly connected to the slide, the positioning screw is coaxially fixedly connected to the propulsion gear, the propulsion gear cooperates with the incomplete gear, and the incomplete gear is connected to the output shaft of the positioning motor.

[0009] Furthermore, a guide groove disk is rotatably mounted on the gear ring frame, and three guide grooves are evenly arranged on the guide groove disk. The first end of a clamping plate is slidably mounted in each guide groove, and the second end of the clamping plate is slidably mounted on the gear ring frame, and all the clamping plates move synchronously.

[0010] Furthermore, a clamping roller is rotatably mounted on the second end of each clamping plate.

[0011] Furthermore, an incomplete gear ring is fixedly mounted on the guide groove disc, the incomplete gear ring is meshed with the clamping gear, the clamping gear is connected to the output shaft of the clamping motor, and the clamping motor is mounted on the gear ring frame.

[0012] Furthermore, a blanking plate is rotatably mounted on the cutting platform, the blanking plate is connected to the cutting platform via a blanking spring, and the axis of the rotating shaft of the blanking plate is not located on the second reference plane.

[0013] Furthermore, a hydraulic cylinder is installed on the gear ring frame, a piston rod of the hydraulic cylinder is connected to a slide rail, and a laser cutting head is slidably installed in the slide rail.

[0014] Compared with the prior art, the present invention has the following advantages: (1) the present invention presses down the support and clearance plate through the rod, so that the support and clearance plate slides on the slide seat, compresses the clearance spring, and the rod is stuck in the "V" part of the lower support frame and the lower positioning frame. The surface of the rod is tangent to the "V" part of the lower support frame and the lower positioning frame, and the position of the rod is initially positioned; (2) the present invention drives the upper positioning frame and the lower positioning frame to move relative to each other until the upper positioning frame and the lower positioning frame are in contact with the rod, clamping the rod in the middle, so that the rod The gear ring frame is coaxial with the gear ring frame for further positioning; (3) The present invention is suitable for laser cutting of heavy-duty bar structures of various diameters and sizes, realizing the automatic transmission, cutting and blanking of the bar, and having high work efficiency; (4) In order to ensure accuracy and reduce errors, the present invention starts the clamping motor to drive the clamping gear to rotate before cutting, driving the incomplete gear ring and the guide groove disk to rotate, driving the clamping plate to slide on the gear ring frame and the guide groove disk, and multiple clamping plates are synchronously moved toward the axis until the clamping roller contacts the bar, thereby clamping the bar to a limit position. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 Schematic diagram of the partial structure of the positioning mechanism of the present invention Figure 1 。

[0017] Figure 3 is Figure 2 the enlarged schematic diagram of the partial structure at position A in

[0018] Figure 4 Schematic diagram of the partial structure of the positioning mechanism of the present invention Figure 2 。

[0019] Figure 5 Schematic diagram of the partial structure of the positioning mechanism of the present invention Figure 3 。

[0020] Figure 6 Schematic diagram of the partial structure of the positioning mechanism of the present invention Figure 4 。

[0021] Figure 7 Schematic diagram of the partial structures of the positioning mechanism and the cutting mechanism of the present invention

[0022] Figure 8 Schematic diagram of the partial sectional structure of the cutting mechanism of the present invention

[0023] Figure 9 Schematic diagram of the partial structure of the cutting mechanism of the present invention

[0024] Figure 10 is Figure 5 the enlarged schematic diagram of the partial structure at position B in

[0025] Reference numerals: 1 - positioning mechanism; 2 - cutting mechanism; 101 - cutting platform; 102 - positioning motor 1; 103 - incomplete gear; 104 - propulsion gear; 105 - positioning lead screw; 106 - carriage; 107 - positioning motor 2; 108 - bidirectional lead screw; 109 - upper positioning frame; 110 - lower positioning frame; 111 - propulsion plate; 112 - moving slide bar; 113 - bevel gear 1; 114 - bevel gear 2; 115 - spline shaft; 116 - bushing; 117 - bevel gear 3; 118 - bevel gear 4; 119 - support lead screw; 120 - fixed slide bar; 121 - lower support frame; 122 - vertical plate; 123 - support relief plate; 124 - slide block; 125 - relief spring; 201 - cutting gear; 202 - tooth ring frame; 203 - guide groove disc; 204 - incomplete tooth ring; 205 - clamping gear; 206 - clamping motor; 207 - blanking plate; 208 - blanking spring; 209 - clamping plate; 210 - clamping roller; 211 - hydraulic cylinder; 212 - slide rail; 213 - laser cutting head; 214 - adjustment lead screw. Detailed implementation manners

[0026] The present invention will be further described below in conjunction with the accompanying drawings and exemplary embodiments. The schematic embodiments and descriptions of the present invention are used to explain the present invention, but do not limit the present invention. In addition, if a detailed description of the known art is unnecessary for showing the features of the present invention, it will be omitted.

[0027] Example: Refer to Figures 1 - 10A positioning laser cutting machine for stainless steel bars as shown includes a positioning mechanism 1 and a cutting mechanism 2 installed on the positioning mechanism 1. The positioning mechanism 1 includes a cutting platform 101, a first positioning motor 102, an incomplete gear 103, a propulsion gear 104, a positioning lead screw 105, a carriage 106, a second positioning motor 107, a bidirectional lead screw 108, an upper positioning frame 109, a lower positioning frame 110, a propulsion plate 111, a moving slide bar 112, a first bevel gear 113, a second bevel gear 114, a spline shaft 115, a bushing 116, a third bevel gear 117, a fourth bevel gear 118, a support lead screw 119, a fixed slide bar 120, a lower support frame 121, a vertical plate 122, a support relief plate 123, a slide seat 124, and a relief spring 125. The cutting mechanism 2 includes a cutting gear 201, a tooth ring frame 202, a guide groove plate 203, an incomplete tooth ring 204, a clamping gear 205, a clamping motor 206, a blanking plate 207, a blanking spring 208, a clamping plate 209, a clamping roller 210, a hydraulic cylinder 211, a slide rail 212, a laser cutting head 213, and an adjustment lead screw 214. A carriage 106 is slidably installed on the cutting platform 101. A moving slide bar 112 is fixedly installed on the carriage 106. An upper positioning frame 109 and a lower positioning frame 110 are symmetrically slidably arranged on the moving slide bar 112. The upper positioning frame 109 and the lower positioning frame 110 are symmetric about a first reference plane. A bidirectional lead screw 108 is rotatably installed on the carriage 106. The bidirectional lead screw 108 is connected to the output shaft of the second positioning motor 107. The second positioning motor 107 is installed on the carriage 106. The bidirectional lead screw 108 has two threads with opposite helix directions. The upper positioning frame 109 and the lower positioning frame 110 move synchronously, and the moving directions are opposite or towards each other. A tooth ring frame 202 is rotatably installed on the cutting platform 101. The tooth ring frame 202 meshes with the cutting gear 201. The cutting gear 201 is rotatably installed on the cutting platform 101. The cutting gear 201 is connected to a first cutting motor. The first cutting motor is installed on the cutting platform 101. A fixed slide bar 120 is fixedly installed on the cutting platform 101. A lower support frame 121 is slidably installed on the fixed slide bar 120. The upper surface of the lower support frame 121 is at the same horizontal level as the upper surface of the lower positioning frame 110. The first reference plane is at the same horizontal level as the first longitudinal symmetry plane of the tooth ring frame 202. The upper positioning frame 109, the lower positioning frame 110, and the lower support frame 121 are symmetric about a second reference plane. The second reference plane is at the same horizontal level as the second longitudinal symmetry plane of the tooth ring frame 202. The second reference plane is perpendicularly distributed to the first reference plane. The intersection line of the second reference plane and the first reference plane is the axis of the tooth ring frame 202. The upper positioning frame 109, the lower positioning frame 110, and the lower support frame 121 are in a "v" shape.

[0028] The bidirectional screw rod 108 is coaxially fixedly connected to the bevel gear 113, the bevel gear 113 and the bevel gear 2 114 are meshed with each other, the bevel gear 2 114 is coaxially fixedly connected to the spline shaft 115, the spline shaft 115 is spline-matched with the sleeve 116, the spline shaft 115 is rotatably mounted on the slide 106, the sleeve 116 is rotatably mounted on the cutting platform 101, the sleeve 116 is coaxially fixedly connected to the bevel gear 3 117, the bevel gear 3 117 and the bevel gear 4 118 are meshed with each other, the bevel gear 4 118 is coaxially fixedly connected to the support screw 119, and the support screw 119 is threadedly matched with the lower support frame 121.

[0029] A slide 124 is installed on the cutting platform 101, and the slide 124 is slidably connected to the support and clearance plate 123. An inclined section is provided at each end of the support and clearance plate 123, and the support and clearance plate 123 is connected to the cutting platform 101 through a clearance spring 125; under normal circumstances, the upper surface of the support and clearance plate 123 is in the same horizontal plane as the upper surfaces of the lower support frame 121 and the lower positioning frame 110.

[0030] A push plate 111 is installed on the lower positioning frame 110 , and the push plate 111 corresponds to the position of the gear ring frame 202 . A vertical plate 122 is installed on the cutting platform 101 , and the vertical plate 122 is located between the gear ring frame 202 and the lower support frame 121 .

[0031] A positioning screw 105 is rotatably installed on the cutting platform 101. The positioning screw 105 is threadedly connected to the slide 106. The positioning screw 105 is coaxially fixedly connected to the propulsion gear 104. The propulsion gear 104 cooperates with the incomplete gear 103. The incomplete gear 103 is connected to the output shaft of the positioning motor 102. The positioning motor 102 is installed on the cutting platform 101.

[0032] A guide plate 203 is rotatably mounted on the gear ring frame 202. Three guide grooves are evenly arranged on the guide plate 203. The first end of a clamping plate 209 is slidably mounted in each guide groove. The second end of the clamping plate 209 is slidably mounted on the gear ring frame 202. All clamping plates 209 move synchronously.

[0033] A clamping roller 210 is rotatably mounted on the second end of each clamping plate 209 .

[0034] An incomplete ring gear 204 is fixedly mounted on the guide groove disc 203 . The incomplete ring gear 204 is meshed with a clamping gear 205 . The clamping gear 205 is connected to the output shaft of a clamping motor 206 . The clamping motor 206 is mounted on the gear ring frame 202 .

[0035] A blanking plate 207 is rotatably mounted on the cutting platform 101 . The blanking plate 207 is connected to the cutting platform 101 via a blanking spring 208 . The axis of the rotating shaft of the blanking plate 207 is not located on the second reference plane.

[0036] A hydraulic cylinder 211 is installed on the gear ring frame 202, and the piston rod of the hydraulic cylinder 211 is connected to the slide rail 212. A laser cutting head 213 is slidably installed in the slide rail 212. The laser cutting head 213 is threadedly connected to the adjusting screw rod 214. The adjusting screw rod 214 is rotatably installed on the slide rail 212, and the adjusting screw rod 214 is connected to the cutting motor 2.

[0037] The working principle of the present invention is as follows: in the initial state, the lower support frame 121 and the lower positioning frame 110 are naturally in contact with the cutting platform 101, and the upper surface of the support plate 123 is at the same horizontal plane as the upper surfaces of the lower positioning frame 110 and the lower support frame 121. Heavy rods roll in from one side of the cutting platform 101 and fall on the lower support frame 121, the lower positioning frame 110, and the support plate 123. After rolling a preset distance, the rods roll to the "V"-shaped position of the lower support frame 121 and the lower positioning frame 110 and stabilize.

[0038] At this time, the rod presses down the support plate 123, causing the support plate 123 to slide on the slide 124, compressing the spring 125, and the rod is stuck in the "V" part of the lower support frame 121 and the lower positioning frame 110. The surface of the rod is tangent to the "V" part of the lower support frame 121 and the lower positioning frame 110. At this time, the position of the rod is preliminarily positioned.

[0039] Then start the positioning motor 102 to drive the incomplete gear 103 to rotate, drive the propulsion gear 104 to rotate, drive the positioning screw 105 to rotate, drive the slide 106 and the lower positioning frame 110 to move, and the lower positioning frame 110 moves, pushing the rod to move until the first end of the rod contacts the vertical plate 122 and the second end of the rod contacts the blanking plate 207. The positioning motor 102 stops operating. This is the secondary positioning.

[0040] Then, the positioning motor 2 107 is started to drive the bidirectional screw 108 to rotate, driving the upper positioning frame 109 and the lower positioning frame 110 to move relative to each other until both the upper positioning frame 109 and the lower positioning frame 110 are in contact with the rod, clamping the rod in the middle, and the positioning motor 2 107 stops operating.

[0041] When the bidirectional screw 108 rotates, it drives the bevel gear 1 113 to rotate, drives the bevel gear 2 114 and the spline shaft 115 to rotate, drives the sleeve 116 and the bevel gear 3 117 to rotate, drives the bevel gear 4 118 and the supporting screw 119 to rotate, drives the lower support frame 121 and the lower positioning frame 110 to rise and fall synchronously, makes the rod and the gear ring frame 202 coaxial, this is the three-way positioning.

[0042] Start the positioning motor 102 to drive the incomplete gear 103 to rotate, driving the propulsion gear 104 to rotate. Each time the incomplete gear 103 rotates one week, it drives the propulsion gear 104 and the positioning lead screw 105 to rotate a preset angle, driving the carriage 106 to move a preset distance, driving the lower positioning frame 110 and the propulsion plate 111 to move. The propulsion plate 111 pushes the bar to move a preset distance in the direction of the gear ring frame 202. When the lower positioning frame 110 moves, it contacts the inclined sections on both sides of the support relief plate 123, pressing down the support relief plate 123 and compressing the relief spring 125 to make the support relief plate 123 give way.

[0043] Start the cutting motor 1 to drive the cutting gear 201 to rotate, driving the gear ring frame 202 to rotate. When the gear ring frame 202 rotates one week, it drives the hydraulic cylinder 211, the slide rail 212, and the laser cutting head 213 to rotate one week. Start the hydraulic cylinder 211 to extend and retract the piston rod to adjust the distance between the slide rail 212 and the laser cutting head 213 relative to the bar. Start the cutting motor 2 to drive the adjustment lead screw 214 to rotate, driving the laser cutting head 213 to slide within the slide rail 212 to adjust the cutting position of the laser cutting head 213, and drive the laser cutting head 213 to surround and laser cut the bar through the gear ring frame 202.

[0044] To ensure accuracy and reduce errors, before cutting, start the clamping motor 206 to drive the clamping gear 205 to rotate, driving the incomplete gear ring 204 and the guide groove disk 203 to rotate, driving the clamping plate 209 to slide on the gear ring frame 202 and the guide groove disk 203. Multiple clamping plates 209 synchronously move closer to the axis until the clamping rollers 210 contact the bar to clamp and limit the bar.

[0045] The cut bar falls on the blanking plate 207, compressing the blanking spring 208, causing the blanking plate 207 to rotate and tilt, so that the bar slides towards the collection device.

Claims

1. A positioning laser cutting machine for stainless steel bars, comprising a positioning mechanism (1) and a cutting mechanism (2) installed on the positioning mechanism (1), characterized in that: The positioning mechanism (1) includes a cutting platform (101). A carriage (106) is slidably mounted on the cutting platform (101). A moving slide bar (112) is fixedly mounted on the carriage (106). An upper positioning frame (109) and a lower positioning frame (110) are symmetrically and slidably arranged on the moving slide bar (112). The upper positioning frame (109) and the lower positioning frame (110) are symmetric about a first reference plane. A bidirectional lead screw (108) is rotatably mounted on the carriage (106). The bidirectional lead screw (108) is provided with two threads with opposite helix directions. The upper positioning frame (109) and the lower positioning frame (110) move synchronously, and the moving directions are opposite or away from each other. A toothed ring frame (202) is rotatably mounted on the cutting platform (101). A fixed slide bar (120) is fixedly mounted on the cutting platform (101). A lower support frame (121) is slidably mounted on the fixed slide bar (120). The upper surface of the lower support frame (121) is on the same horizontal plane as the upper surface of the lower positioning frame (110). The first reference plane is on the same horizontal plane as the first longitudinal symmetry plane of the toothed ring frame (202). The upper positioning frame (109), the lower positioning frame (110), and the lower support frame (121) are each symmetric about a second reference plane. The second reference plane is perpendicular to the first reference plane. The intersection line of the second reference plane and the first reference plane is the axis of the toothed ring frame (202). The upper positioning frame (109), the lower positioning frame (110), and the lower support frame (121) are in a "V" shape. A positioning lead screw (105) is rotatably mounted on the cutting platform (101). The positioning lead screw (105) is in threaded connection with the carriage (106). The positioning lead screw (105) is coaxially and fixedly connected with a driving gear (104). The driving gear (104) cooperates with an incomplete gear (103). The incomplete gear (103) is connected to the output shaft of a positioning motor one (102). A guide groove disc (203) is rotatably mounted on the toothed ring frame (202). Three guide grooves are evenly arranged on the guide groove disc (203). The first end of a clamping plate (209) is slidably mounted in each guide groove respectively. The second end of the clamping plate (209) is slidably mounted on the toothed ring frame (202). All the clamping plates (209) move synchronously. A clamping roller (210) is rotatably mounted at the second end of each clamping plate (209). An incomplete toothed ring (204) is fixedly mounted on the guide groove disc (203). The incomplete toothed ring (204) meshes with a clamping gear (205). The clamping gear (205) is connected to the output shaft of a clamping motor (206). The clamping motor (206) is mounted on the toothed ring frame (202). A blanking plate (207) is rotatably mounted on the cutting platform (101). The blanking plate (207) is connected to the cutting platform (101) through a blanking spring (208). The axis of the rotation shaft of the blanking plate (207) is not on the second reference plane.

2. The positioning laser cutting machine for stainless steel bars according to claim 1, wherein: A slide (124) is installed on the cutting platform (101), and the slide (124) is slidably connected to the support and clearance plate (123). An inclined section is provided at each end of the support and clearance plate (123), and the support and clearance plate (123) is connected to the cutting platform (101) via a clearance spring (125). Under normal conditions, the upper surface of the support and clearance plate (123) is in the same horizontal plane as the upper surfaces of the lower support frame (121) and the lower positioning frame (110).

3. A positioning laser cutting machine for stainless steel bars according to claim 2, characterized in that: A push plate (111) is installed on the lower positioning frame (110), and the push plate (111) corresponds to the position of the gear ring frame (202). A vertical plate (122) is installed on the cutting platform (101), and the vertical plate (122) is located between the gear ring frame (202) and the lower support frame (121).

4. A positioning laser cutting machine for stainless steel bars according to claim 3, characterized in that: A hydraulic cylinder (211) is installed on the gear ring frame (202), a piston rod of the hydraulic cylinder (211) is connected to a slide rail (212), and a laser cutting head (213) is slidably installed in the slide rail (212).

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