Parallelism accurate regulation and control device for automobile side plate cutting

Abstract

The utility model relates to an accurate parallelism regulating and controlling device for cutting an automobile side plate, which effectively solves the problems that the cutting part of the plate is not parallel to the edge in the cutting process, the cut plate is tilted or bent due to thermal stress, and the cutting accuracy is influenced. According to the parallelism precise regulation and control device for cutting the automobile side plate, the detection mechanism and the pressing mechanism can synchronously move along with the cutting head, movement of the cutting head is not limited, the pressing mechanism can press a cut plate, and the phenomenon that the edge of the plate is warped due to thermal stress or self stress can be effectively prevented; the plate is always in a horizontal state, and the cutting accuracy is ensured; and the detection mechanism can detect the distance between the detection mechanism and the edge part of the plate, so that the moving track of the cutting head can be always kept parallel to the edge of the plate, the situation of cutting deviation caused by untidy arrangement of the plate is prevented, waste is prevented, and the laser cutting device is more convenient to use during laser cutting.

Description

Technical Field

[0001] This utility model belongs to the field of laser cutting technology, specifically relating to a parallelism precision control device for cutting automotive side panels. Background Technology

[0002] Laser cutting utilizes a focused, high-power-density laser beam to irradiate the workpiece, causing the irradiated material to rapidly melt, vaporize, ablate, or reach its ignition point. Simultaneously, a high-speed gas flow coaxial with the laser beam removes the molten material, creating a kerf of a specific shape to cut the workpiece. Laser cutting technology is widely used in the processing of both metallic and non-metallic materials. In the processing of automotive side panels, laser cutting is primarily used to cut sheet metal, significantly reducing processing time, lowering costs, and improving workpiece quality.

[0003] However, in the actual cutting process, the sheet material is not placed neatly on the machine tool and may be placed at an angle. If the cutting head moves parallel to the edge of the machine tool, the cutting part of the sheet material will not be parallel to the edge, resulting in waste of the sheet material. In addition, the high temperature generated during laser cutting may cause the cut sheet material to warp or bend due to thermal stress, which will affect the subsequent cutting accuracy and make it difficult to cut the sheet material accurately. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a parallelism precision control device for cutting automotive side panels. This device can effectively prevent the panel from warping due to thermal stress or its own stress, and the clamping mechanism located in front of the cutting head can press the panel onto the machine tool, thereby ensuring that the panel is always in a horizontal state and ensuring the accuracy of the cutting.

[0005] A parallelism precision control device for cutting automotive side panels includes a fixed frame that can be installed inside a laser cutting machine tool. Sliding mechanisms are slidably connected to both sides of the fixed frame, and a lead screw drive mechanism is provided at the bottom of the sliding mechanism. A detection mechanism for detecting the edge distance of the cutting material is provided at the movable end of the lead screw drive mechanism. A positioning block is slidably connected to the top of the sliding mechanism, and a slide rail is provided on the top of the positioning block. A sliding frame is slidably connected to the inside of the side of the slide rail, and a clamping frame that can be clamped to the outside of the laser cutting head is provided on the side of the sliding frame. A clamping mechanism for pressing the cutting material is provided on the side of the clamping frame.

[0006] Preferably, the sliding mechanism includes a first slider, a support frame, a first groove, and positioning holes. The support frame has two first sliders fixedly connected to both sides of its lower surface, and both first sliders are slidably connected inside the fixed frame. The support frame has a first groove on its upper surface that allows the positioning block to slide inside. The positioning holes are formed on the inner bottom wall of the first groove, and there are several of them. The several positioning holes are evenly spaced on the inner bottom wall of the first groove.

[0007] Preferably, the lead screw drive mechanism includes a fixed plate, a drive motor, a lead screw, and a limiting rod. The fixed plate is fixedly connected to the bottom of the first slider and is located below the fixed frame. The bottom ends of the first sliders on both sides of the lower surface of the support frame are fixedly connected to fixed plates, and the limiting rod is fixedly connected between the two fixed plates. The lead screw is connected to the output end of the drive motor via a spline and is rotatably connected between the two fixed plates via a bearing. The drive motor is fixedly installed on the side of one of the fixed plates.

[0008] Preferably, the detection mechanism includes a lead screw slider, a limit sleeve, a lifting rack, and a distance sensor. The lead screw slider is connected to the outside of the lead screw via a threaded drive, and its top end is sleeved on the outside of the limit rod. The limit sleeve is fixedly connected to the side of the lead screw slider, and the lifting rack is vertically inserted inside the limit sleeve. The distance sensor is fixedly installed at the bottom of the lifting rack near the middle of the fixed frame. The detection mechanism also includes a drive motor and a spur gear. The spur gear is connected to the output end of the drive motor via a spline and is rotatably connected inside the limit sleeve and meshes with the lifting rack. The drive motor is fixedly installed on the side of the limit sleeve.

[0009] Preferably, the two detection mechanisms at the bottom of the sliding mechanism on both sides of the fixed frame are symmetrically arranged with the vertical center line of the fixed frame as the axis of symmetry, and the two distance sensors are respectively fixedly installed at the bottom of the two lifting racks on the side close to each other.

[0010] Preferably, the positioning block has a limiting structure inside, which includes a rod and a spring. The rod is fixedly connected to the lower surface of the slide rail and passes through the inside of the positioning block. The slide rail abuts against the upper surface of the positioning block. The spring is sleeved on the outside of the rod and pressed against the inside of the positioning block. The positioning block is slidably connected inside the first slide groove, and the rod passes through the bottom end of the positioning block and can be inserted into its corresponding positioning hole. There are two slide rails, and the two slide rails are symmetrically arranged with the vertical center line of the support frame as the axis of symmetry. The two sides of the lower surface of the two slide rails are fixedly connected to rods and each is provided with a positioning block and a limiting structure.

[0011] Preferably, a second slide groove is provided on the side of each of the two slide rails that are close to each other, and the slide frame is slidably connected in the second slide groove. There are two clamping frames, and the two clamping frames are respectively fixedly connected on the side of each of the two slide frames that are close to each other. The two clamping frames can be fixedly sleeved on the outside of the laser cutting head by bolts.

[0012] Preferably, the clamping mechanism includes a mounting frame, an electric cylinder, a base plate, and casters. The mounting frame is fixedly installed on the side of the clamping frame near the slide rail, and electric cylinders are fixedly installed on both sides of the lower surface. The base plate is fixedly installed at the bottom end of the movable rod of the electric cylinder. The number of casters is several, and the casters are evenly and equidistantly installed on the lower surface of the base plate.

[0013] The beneficial effects of the above technical solution are as follows:

[0014] This precision parallelism control device for cutting automotive side panels utilizes a first sliding mechanism, a detection mechanism, a sliding frame, and a clamping mechanism. The clamping mechanism is fixed to both sides of the cutting head via a clamping frame. The sliding frame slides laterally on a slide rail, while the sliding mechanism slides longitudinally on a fixed frame. This allows the detection and clamping mechanisms to move synchronously with the cutting head without restricting its movement. When the cutting head moves to cut the sheet metal, the clamping mechanism, moving in the opposite direction to the cutting head, clamps the cut sheet metal, effectively preventing warping due to thermal or inherent stress. The clamping mechanism, positioned in front of the cutting head, presses the sheet metal firmly onto the machine tool, ensuring it remains horizontal and guaranteeing cutting accuracy. The detection mechanism measures the distance between the cutting head and the edge of the sheet metal, ensuring the cutting head's trajectory remains parallel to the edge, preventing cutting deviations caused by uneven sheet metal placement, reducing waste, and facilitating laser cutting. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram showing the disassembled state of the clamping bracket and the pressing mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the clamping bracket and detection mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the positioning block and sliding mechanism of this utility model;

[0019] Figure 5 This is a schematic diagram showing the disassembled state of the detection mechanism and the lead screw drive mechanism of this utility model;

[0020] Figure 6This is a schematic diagram of the disassembled state of the testing mechanism of this utility model;

[0021] Figure 7 This is a schematic diagram of the cross-sectional state of the support frame of this utility model;

[0022] Figure 8 This is a schematic diagram of the cross-sectional state of the positioning block of this utility model.

[0023] In the diagram: 1. Fixed frame; 2. Positioning block; 3. Slide rail; 4. Clamping bracket; 5. First slider; 6. Support frame; 7. First slide groove; 8. Positioning hole; 9. Fixed plate; 10. Drive motor; 11. Lead screw; 12. Limiting rod; 13. Lead screw slider; 14. Limiting sleeve; 15. Lifting rack; 16. Distance sensor; 17. Drive motor; 18. Spur gear; 19. Sliding frame; 20. Second slide groove; 21. Mounting bracket; 22. Electric cylinder; 23. Base plate; 24. Caster wheel; 25. Insert rod; 26. Spring. Detailed Implementation

[0024] The foregoing and other technical contents, features and effects of this utility model are described in conjunction with the appendix below. Figures 1 to 8 The embodiments are described in detail below.

[0025] This embodiment provides a device for precise parallelism control when cutting automotive side panels, as shown in the attached figure. Figure 1-8 As shown, the structure includes a fixed frame 1 that can be installed inside a laser cutting machine tool. The fixed frame 1 is horizontally installed inside the laser cutting machine tool. Both sides of the fixed frame 1 are slidably connected to sliding mechanisms. The sliding mechanisms include first sliders 5, support frames 6, first grooves 7, and positioning holes 8. The two sides of the lower surface of the support frame 6 are fixedly connected to the first sliders 5, and both first sliders 5 are slidably connected inside the fixed frame 1. The first sliders 5 can slide along the inside of the first groove 7, which can ensure that the structure can move longitudinally with the cutting head. The upper surface of the support frame 6 is provided with a first groove 7 that allows the positioning block 2 to slide inside it. The positioning holes 8 are opened on the inner bottom wall of the first groove 7, and there are several of them. The several positioning holes 8 are evenly spaced on the inner bottom wall of the first groove 7.

[0026] A lead screw drive mechanism is provided at the bottom of the sliding mechanism. The lead screw drive mechanism includes a fixed plate 9, a drive motor 10, a lead screw 11, and a limiting rod 12. The fixed plate 9 is fixedly connected to the bottom of the first slider 5 and is located below the fixed frame 1. The bottom ends of the first slider 5 on both sides of the lower surface of the support frame 6 are fixedly connected to the fixed plates 9, and the limiting rod 12 is fixedly connected between the two fixed plates 9. The lead screw 11 is connected to the output end of the drive motor 10 through a spline and is rotatably connected between the two fixed plates 9 through a bearing. The drive motor 10 is fixedly installed on the side of one of the fixed plates 9. The operation of the drive motor 10 can drive the lead screw 11 to rotate. Under the limiting action of the limiting rod 12, the lead screw slider 13 can only move horizontally along the lead screw 11, thereby adjusting the overall position of the detection mechanism. This makes it easy to adjust the detection mechanism to the front of the cutting head's movement direction according to the cutting head's movement direction, thereby detecting in advance whether the board is tilted. The control unit controls the cutting head to move in a direction parallel to the edge of the board.

[0027] The movable end of the lead screw drive mechanism is equipped with a detection mechanism that can detect the distance to the edge of the cut plate. The detection mechanism includes a lead screw slider 13, a limit sleeve 14, a lifting rack 15, and a distance sensor 16. The lead screw slider 13 is connected to the outside of the lead screw 11 through a threaded drive and its top end is sleeved on the outside of the limit rod 12. The limit sleeve 14 is fixedly connected to the side of the lead screw slider 13 and the lifting rack 15 is vertically inserted inside the limit sleeve 14. The distance sensor 16 is fixedly installed at the bottom of the lifting rack 15 near the middle of the fixed frame 1. The lead screw slider 13 can move back and forth along the lead screw 11 under the drive of the lead screw 11. The detection direction of the distance sensor 16 is horizontal.

[0028] The detection mechanism also includes a drive motor 17 and a spur gear 18. The spur gear 18 is splined to the output end of the drive motor 17 and rotatably connected inside the limiting sleeve 14, meshing with the lifting rack 15. The drive motor 17 is fixedly installed on the side of the limiting sleeve 14. The two detection mechanisms at the bottom of the sliding mechanism on both sides of the fixed frame 1 are symmetrically arranged about the vertical center line of the fixed frame 1. Two distance sensors 16 are respectively fixedly installed at the bottom of the two lifting racks 15 on the side closest to each other. After the detection mechanism is moved to the position in front of the cutting head moving direction by the lead screw 11, its position is fixed, and then the drive motor 17 drives the... The rotating spur gear 18 lowers the lifting rack 15, aligning the distance sensor 16 at its bottom with the edge of the material to be cut on the machine tool. This allows for real-time detection of the distance between the sensor and the edge of the material. Simultaneously, the detection mechanism moves synchronously with the cutting head, continuously monitoring the distance between the sensor and the edge of the material. When the distance changes, it indicates that the material is not positioned neatly. The control unit can then control the movement trajectory of the cutting head based on the real-time monitored distance changes, ensuring that the cutting direction of the cutting head remains parallel to the edge of the material. This results in neatly cutting the required material, guaranteeing a flat cut, and reducing material waste.

[0029] The top of the sliding mechanism is slidably connected to a positioning block 2, and a slide rail 3 is provided on the top of the positioning block 2. The positioning block 2 has an internal limiting structure, which includes a rod 25 and a spring 26. The rod 25 is fixedly connected to the lower surface of the slide rail 3 and passes through the interior of the positioning block 2. The slide rail 3 abuts against the upper surface of the positioning block 2. The spring 26 is sleeved on the outside of the rod 25 and pressed against the interior of the positioning block 2. The spring 26 provides a downward elastic force to the rod 25, allowing it to be inserted into the corresponding positioning hole 8. The positioning block 2 is slidably connected inside the first slide groove 7, and the rod 25 passes through the positioning block 2. The bottom end can be inserted into the corresponding positioning hole 8. There are two slide rails 3, and the two slide rails 3 are symmetrically arranged with the vertical center line of the support frame 6 as the axis of symmetry. The two sides of the lower surface of the two slide rails 3 are fixedly connected with the insertion rod 25 and are equipped with positioning block 2 and limiting structure. Different sizes of clamping frame 4 can be selected according to the size of the cutting head. By lifting the slide rail 3 upward, the insertion rod 25 on both sides is separated from the positioning hole 8, and the positioning block 2 can slide in the first slide groove 7 on the support frame 6, so as to facilitate the adjustment of the distance between the two clamping frames 4 and to make it easy to firmly fix the structure on cutting heads of different sizes.

[0030] The slide rail 3 has a sliding frame 19 slidably connected to its inner side, and the sliding frame 19 has a clamping frame 4 that can be clamped to the outside of the laser cutting head. The two slide rails 3 have a second slide groove 20 on the side that is close to each other, and the sliding frame 19 is slidably connected in the second slide groove 20, which can ensure that the clamping frame 4 can move synchronously with the lateral movement of the cutting head. There are two clamping frames 4, and the two clamping frames 4 are fixedly connected to the side that is close to each other of the two sliding frames 19. The two clamping frames 4 can be fixedly sleeved to the outside of the laser cutting head by bolts.

[0031] The clamping frame 4 is equipped with a clamping mechanism on its side for pressing the cutting plate. The clamping mechanism includes a mounting frame 21, an electric cylinder 22, a base plate 23, and casters 24. The mounting frame 21 is fixedly installed on the side of the clamping frame 4 near the slide rail 3, and electric cylinders 22 are fixedly installed on both sides of its lower surface. The base plate 23 is fixedly installed on the bottom end of the movable rod of the electric cylinder 22. There are several casters 24, and the casters 24 are evenly installed on the lower surface of the base plate 23 at equal intervals. Before laser cutting, the movable rod of the electric cylinder 22 is extended to press the casters 24 onto the plate to be cut, which can effectively prevent the plate from deforming and affecting the cutting accuracy. At the same time, the clamping mechanism can move synchronously with the cutting head, and can always press the plate around the cutting part, improving the accuracy of plate cutting.

[0032] The drive motor 10, distance sensor 16, drive motor 17 and electric cylinder 22 are all electrically connected to the external control unit and are all electrically connected to the external circuit through wires.

[0033] In summary, the parallelism precision control device for cutting automotive side panels has the following operating steps:

[0034] 1. Fix the clamping brackets on both sides to the outside of the cutting head so that the detection mechanism and the clamping mechanism can move synchronously with the cutting head, and then place the plate to be cut on the machine tool;

[0035] 2. Control the operation of the drive motors 17 on both sides, and drive the lifting rack 15 to fall through the spur gear 18 so that the distance sensor 16 at the bottom corresponds to the side of the plate. The distance sensors 16 on both sides can detect the two sides of the plate respectively, thereby improving the accuracy of detection.

[0036] 3. Then, the detection mechanism is moved to the front of the cutting head by the drive motor 10 and the lead screw 11, so that it moves synchronously with the cutting head. This allows the board to be detected in advance if it is tilted. The control unit then adjusts the movement trajectory of the cutting head in time so that the cutting direction is always parallel to the edge of the board.

[0037] The above description is only for illustrating the present utility model. It should be understood that the present utility model is not limited to the above embodiments, and various modifications that conform to the concept of the present utility model are within the protection scope of the present utility model.

Claims

1. A parallelism precision control device for cutting automobile side plates, comprising a fixed frame (1) that can be installed inside a laser cutting machine, characterized in that: Both sides of the fixed frame (1) are slidably connected with sliding mechanisms, and the bottom of the sliding mechanism is provided with a lead screw driving mechanism. The movable end of the lead screw driving mechanism is provided with a detection mechanism that can detect the edge distance of the cutting plate. The top of the sliding mechanism is slidably connected with a positioning block (2), and the top of the positioning block (2) is provided with a slide rail (3). The inside of the side surface of the slide rail (3) is slidably connected with a sliding frame (19), and the side surface of the sliding frame (19) is provided with a clamping frame (4) that can be clamped outside the laser cutting head. The side surface of the clamping frame (4) is provided with a pressing mechanism that can press the cutting plate.

2. The parallelism precision control device for cutting automobile side plates according to claim 1, characterized in that: The sliding mechanism comprises a first sliding block (5), a support frame (6), a first sliding groove (7) and a positioning hole (8). The lower surface of the support frame (6) is fixedly connected with a first sliding block (5) on both sides, and the two first sliding blocks (5) are slidably connected inside the fixed frame (1). The upper surface of the support frame (6) is provided with a first sliding groove (7) that allows the positioning block (2) to slide inside it. The positioning hole (8) is provided on the inner bottom wall of the first sliding groove (7) and the number is several. The several positioning holes (8) are evenly arranged at equal intervals on the inner bottom wall of the first sliding groove (7).

3. The parallelism precision control device for cutting automobile side plates according to claim 2, characterized in that: The lead screw driving mechanism comprises a fixed plate (9), a drive motor (10), a lead screw (11) and a limiting rod (12). The fixed plate (9) is fixedly connected to the bottom of the first sliding block (5) and is arranged below the fixed frame (1). The bottom end of the first sliding block (5) on both sides of the lower surface of the support frame (6) is fixedly connected with a fixed plate (9), and the limiting rod (12) is fixedly connected between the two fixed plates (9). The lead screw (11) is connected to the output end of the drive motor (10) through a spline and is rotatably connected between the two fixed plates (9) through a bearing. The drive motor (10) is fixedly installed on the side of one of the fixed plates (9).

4. The parallelism precision control device for cutting automobile side plates according to claim 1, characterized in that: The detection mechanism comprises a lead screw block (13), a limiting sleeve (14), a lifting rack (15) and a distance sensor (16). The lead screw block (13) is connected to the outside of the lead screw (11) through a threaded transmission and is sleeved at the outside of the limiting rod (12) at the top end. The limiting sleeve (14) is fixedly connected to the side of the lead screw block (13), and the lifting rack (15) is vertically arranged inside the limiting sleeve (14). The distance sensor (16) is fixedly installed on the bottom of the side of the lifting rack (15) close to the middle of the fixed frame (1). The detection mechanism further comprises a drive motor (17) and a spur gear (18). The spur gear (18) is connected to the output end of the drive motor (17) through a spline and is rotatably connected inside the limiting sleeve (14) and engaged with the lifting rack (15). The drive motor (17) is fixedly installed on the side of the limiting sleeve (14).

5. The parallelism precision control device for cutting automobile side plates according to claim 4, characterized in that: The two detection mechanisms at the bottom of the sliding mechanism on both sides of the fixed frame (1) are symmetrically arranged with the vertical center line of the fixed frame (1) as the axis of symmetry. Two distance sensors (16) are fixedly installed on the bottom of the side of the two lifting racks (15) close to each other.

6. The parallelism precision regulating device for cutting automobile side plates according to claim 2, characterized in that: The inside of the positioning block (2) is provided with a limiting structure, the limiting structure comprises an inserting rod (25) and a spring (26), the inserting rod (25) is fixedly connected to the lower surface of the slide rail (3) and penetrates the inside of the positioning block (2), the slide rail (3) abuts against the upper surface of the positioning block (2), the spring (26) is sleeved on the outside of the inserting rod (25) and abuts against the inside of the positioning block (2), the positioning block (2) is slidingly connected to the inside of the first sliding groove (7), and the inserting rod (25) penetrates the bottom end of the positioning block (2) and can be inserted into the corresponding positioning hole (8) of the positioning block (2), the number of the slide rail (3) is two, and the two slide rails (3) are symmetrically arranged with the vertical middle line of the supporting frame (6) as the axis of symmetry, the lower surfaces of the two slide rails (3) are fixedly connected with the inserting rods (25) on the two sides thereof, and the two slide rails (3) are provided with the positioning blocks (2) and the limiting structures.

7. The parallelism precision regulating device for cutting automobile side plate according to claim 1, characterized in that: The side, close to each other, of the two slide rails (3) is provided with the second sliding groove (20), and the sliding frame (19) is slidingly connected to the second sliding groove (20), the number of the clamping frames (4) is two, and the two clamping frames (4) are fixedly connected to the sides, close to each other, of the two sliding frames (19), and the two clamping frames (4) can be sleeved on the outside of the laser cutting head through bolt fixing.

8. The parallelism precision regulating device for cutting automobile side plate according to claim 1, characterized in that: The pressing mechanism comprises a mounting frame (21), an electric cylinder (22), a bottom plate (23) and universal wheels (24), the mounting frame (21) is fixedly installed on the side, close to the slide rail (3), of the clamping frame (4), and the lower surfaces of the mounting frame (21) are fixedly installed with the electric cylinders (22), the bottom plate (23) is fixedly installed at the bottom end of the movable rod body of the electric cylinder (22), and the number of the universal wheels (24) is several, and the several universal wheels (24) are equidistantly and uniformly installed on the lower surface of the bottom plate (23).

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