CN108406136A - A kind of laser cutting machine of plank or band - Google Patents

Abstract

The invention discloses a kind of plank or the laser cutting machines of band, including work top and laser head, it further include the portal frame above work top, the plank or band can be horizontally vertically moved on work top by traction, horizontal sliding is equipped with the first sliding block and the second sliding block on the portal frame, the laser head is installed in mounting base and is arranged downward, first connecting rod mechanism is hinged between the first slide and mounting base, second connecting rod mechanism is hinged between the second slide and mounting base or between second slide and first connecting rod mechanism, first sliding block and the second sliding block are moved by the independent mobile resultant motion direction for making laser head direction or both in horizontal or vertical direction of the first transverse power device and the driving of the second transverse power device respectively.The laser cutting machine can reduce inertia, improve cutting accuracy.

Description

Laser cutting machine for sheet or strip

technical field

The invention relates to a laser cutting machine, especially for cutting plates or strips.

Background technique

The laser cutting machine uses the laser emitted by the laser head to focus into a high-power-density laser beam through the optical path system. The laser beam irradiates the surface of the workpiece to make the workpiece reach the melting point or boiling point, and at the same time, the high-pressure gas coaxial with the beam blows away the molten or vaporized metal. With the movement of the relative position of the beam and the workpiece, the material will eventually form a slit, so as to achieve the purpose of cutting.

The most commonly used sheet metal laser cutting machine is a laser cutting machine equipped with a moving cutting device and a non-moving working part (that is, a metal sheet). For example, a laser cutting machine (Patent No. CN201020112276.6) discloses a laser cutting machine whose laser head can move vertically and horizontally. The moving laser head cuts the sheet.

However, this structure has a very big disadvantage: since the laser head is driven by the horizontal drive mechanism and the longitudinal drive, each movement will generate inertia. In fact, each inertia may cause inaccurate cutting of the machine, so This limits the cutting accuracy of the laser cutting machine.

Contents of the invention

The technical problem to be solved by the present invention is to provide a laser cutting machine for plates or strips, which can reduce inertia and improve cutting precision.

In order to solve the above technical problems, the technical solution of the present invention is: a laser cutting machine for plates or strips, including a worktable and a laser head, and also includes a gantry across the top of the worktable, and the plates or strips can be It is drawn to move horizontally and longitudinally on the worktable. The first slider and the second slider are installed horizontally and laterally on the gantry frame. The laser head is installed on the mounting base and set downward. The first slider and the A first linkage mechanism is hinged between the mounting bases, a second linkage mechanism is hinged between the second sliding base and the mounting base or between the second sliding base and the first linkage mechanism, and the first slider and the second The sliders are respectively driven by the first transverse power device and the second transverse power device to move independently so that the laser head moves along the transverse direction or the longitudinal direction or the combined movement direction of the two.

As a preferred solution, the first link mechanism includes two parallel first link units and a second link unit, the first link unit, the second link unit, the second link unit A sliding seat and the mounting seat form a parallelogram structure, and the two ends of the first connecting rod monomer and the second connecting rod monomer are respectively hinged on the first sliding seat and the mounting seat.

As a preferred solution, the second link mechanism includes a second link unit and an articulated arm, one end of the second link unit is hinged on the second sliding seat, and the other end of the second link unit One end of the hinged arm is hinged, and the other end of the hinged arm is hinged at the middle of the adjacent second connecting rod unit or on the mounting base.

As a preferred solution, both the first transverse power unit and the second transverse power unit include transverse servo motors, and the transverse servo motors are respectively fixed on the first sliding seat and the second sliding seat, and the gantry is provided with A horizontally extending horizontal rack, the output shaft of the horizontal servo motor is equipped with a horizontal drive gear meshing with the rack.

As a preferred solution, side supports are provided on the side of the workbench, and longitudinal guide rails are provided on the side supports, and a longitudinal moving plate is longitudinally slidably installed on the longitudinal guide rail, and several For the traction fixture that clamps the edge of the plate or strip, the longitudinally moving plate is driven to move longitudinally by the longitudinal traction power device.

As a preferred solution, the longitudinal power device includes a longitudinal servo motor, the longitudinal servo motor is fixed on the side bracket, a longitudinal rack is fixed on the longitudinal moving plate, and a longitudinal rack is fixed on the output shaft of the longitudinal servo motor. The drive gear is engaged with the longitudinal drive gear and the longitudinal rack.

As a preferred solution, the plate or strip is a coil, and the coil is placed on the uncoiler and horizontally drawn by a tractor to move the plate or strip longitudinally above the worktable.

After adopting the above-mentioned technical solution, the effect of the present invention is: the laser cutting machine includes a working table and a laser head, and also includes a gantry spanning above the working table, and the plate or strip can be drawn horizontally and longitudinally on the working table Moving, the first slider and the second slider are installed horizontally and laterally on the gantry frame, the laser head is installed on the mounting base and set downward, and the first sliding base and the mounting base are hinged between the first slider and the mounting base. A link mechanism, a second link mechanism is hinged between the second sliding seat and the mounting seat or between the second sliding seat and the first link mechanism, the first slider and the second slider are respectively controlled by the first transverse The power device and the second horizontal power device drive independent movement to make the laser head move along the horizontal or vertical direction or the combined motion direction of the two. Different kinds of cutting; for longitudinal cutting, only the first sliding seat and the second sliding seat need to move laterally at the same time, so that the laser head is at the cutting seam, and the plate itself can move longitudinally to complete the sawing; cutting of other tracks, by controlling the first The different sliding speeds of the slider and the second slider can control the trajectory of the cutting head, and the trajectory control is realized by using the first link mechanism and the second link mechanism. Because the laser cutting device decomposes the cutting movement, the independent operation of the plate is more conducive to controlling the inertia. At the same time, the movement of the laser head is controlled by the distance between the first slider and the second slider. Therefore, through the first The link mechanism and the second link mechanism decompose the inertial force generated by the motion into some sub-motions, so that the inertial force is further controlled, so the sawing accuracy of the cutting machine is higher.

And because the first link mechanism includes two parallel first link monomers and second link monomers, the first link monomer, the second link monomer, the first sliding seat and the installation The seat constitutes a parallelogram structure, and the two ends of the first connecting rod unit and the second connecting rod unit are respectively hinged on the first sliding seat and the mounting seat, and the second link mechanism can better control the relative rotation of the laser head , It is also convenient to support and control the stillness or movement of the laser head.

And because the first transverse power unit and the second transverse power unit both include transverse servo motors, the transverse servo motors are respectively fixed on the first sliding seat and the second sliding seat, and the gantry is provided with transversely extending transverse teeth. The output shaft of the horizontal servo motor is equipped with a horizontal drive gear meshing with the rack. The transmission precision of the rack and pinion is high, and the servo motor can be used as the power to achieve precise control of the position.

And because the side of described working platform is provided with side support, and longitudinal guide rail is arranged on the side support, and the longitudinal movement board is installed longitudinally on described longitudinal guide rail, and several are fixed on described longitudinal movement plate and are used for clamping sheet material or The traction fixture at the edge of the strip, the longitudinally moving plate is driven by the longitudinal traction power device to move longitudinally, so that the movement of the longitudinally moving plate can clamp a single sheet and move longitudinally to realize the cutting of a single sheet.

And because the plate or strip is a coil, the coil is placed on the uncoiler and drawn horizontally by the tractor to move the plate or strip longitudinally above the worktable, so that the traction by the tractor can realize continuous Cutting, convenient for cutting of sheets or strips in rolls.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic diagram of the three-dimensional structure of Embodiment 1 of the present invention;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the enlarged schematic diagram at I place of Fig. 2;

4 is a schematic diagram of a three-dimensional mechanism of Embodiment 2 of the present invention;

In the attached drawings: 1. Working table; 2. Plate; 3. Gantry frame; 4. Transverse guide rail; 5. Transverse rack; 6. Second slider; 7. First slider; 8. Second link mechanism ; 81, the second link unit; 82, the articulated arm; 9, the first link mechanism; 91, the first link unit; 92. the first link unit; 10, the mounting seat; 11, the laser head ; 12, side bracket; 13, traction fixture; 14, longitudinal traction power unit; 15, first transverse power unit; 16, second transverse power unit; 17, longitudinal moving plate.

Detailed ways

The present invention will be described in further detail below through specific examples.

Example 1

As shown in Figures 1, 2, and 3, a laser cutting machine for plates 2 or strips includes a worktable 1 and a laser head 11. The laser cutting machine in this embodiment is used to cut discrete plates 2 or strips, The laser cutting machine also includes a gantry 3 across the top of the worktable 1, on which a horizontally extending beam is provided on the gantry 3, and a transverse guide rail 4 is arranged on the beam, and the plate 2 or strip can be placed on the worktable 1. To be drawn to move horizontally and longitudinally. In this embodiment, side supports 12 are provided on the side of the worktable 1, and longitudinal guide rails are provided on the side supports 12. A longitudinal moving plate 17 is installed longitudinally on the longitudinal guide rails. Moving plate 17 is fixed with several traction fixtures 13 for clamping sheet material 2 or strip edge, traction fixture 13 is four sets in the present embodiment, and traction fixture 13 can adopt present conventional fixture, as pneumatic fixture, from It only needs to clamp the edge of the plate 2 up and down. The longitudinally moving plate 17 is driven by the longitudinal traction power device 14 to move longitudinally. The longitudinal power device includes a longitudinal servo motor, the longitudinal servo motor is fixed on the side bracket 12, a longitudinal rack is fixed on the longitudinal moving plate 17, a longitudinal drive gear is fixed on the output shaft of the longitudinal servo motor, and the longitudinal drive The gear and the longitudinal rack are meshed with each other. When the longitudinal servo motor is activated, the gear is driven to rotate longitudinally, which drives the longitudinal rack to move longitudinally, thereby realizing the horizontal movement of the longitudinally moving plate 17 and completing the traction of the discrete plates 2 .

The first slide block 7 and the second slide block 6 are installed horizontally and laterally on the gantry frame 3, and the laser head 11 is installed on the mounting base 10 and arranged downwards. A first link mechanism 9 is hinged between the second sliding seat and the mounting seat 10 or a second link mechanism 8 is hinged between the second sliding seat and the first link mechanism 9, and the first sliding block 7 and The second slider 6 is respectively driven by the first transverse power device 15 and the second transverse power device 16 to move independently so that the laser head 11 moves along the transverse direction or the longitudinal direction or the combined movement direction of the two.

As shown in Figure 3, the first link mechanism 9 includes two parallel first link units 91, 92 and a second link unit 81, the first link units 91, 92, the second link unit The two connecting rod monomers 81, the first sliding seat and the mounting seat 10 constitute a parallelogram structure, and the two ends of the first connecting rod monomers 91, 92 and the second connecting rod monomer 81 are respectively hinged on the first sliding seat and the installation seat. Seat 10.

The second link mechanism 8 includes a second link unit 81 and an articulated arm 82, one end of the second connected unit is hinged on the second sliding seat, and the other end of the second connected unit is connected to the articulated arm 82. One end of the hinged arm 82 is hinged, and the other end of the hinged arm 82 is hinged at the middle of the adjacent second connecting rod unit 81 or on the mounting base 10 . In this embodiment, the articulated arm 82 is hinged on the first link unit 92, so that when the distance between the first slider 7 and the second slider 6 changes, the first link unit can be changed. 91, 92 and the angle between the second link unit 81, and then change the position of the laser head 11, since the laser head 11 is driven by the above-mentioned two link mechanisms, the first slider 7 and the second The lateral motion of the slide block 6 has been decomposed, and the decomposed motion inertia force is smaller and the cutting precision is higher.

Of course, the articulated arm 82 can also be articulated on the mounting base 10, and the angle between the first link unit 91, 92 and the second link unit 81 can also be changed, and the deflection of the laser head 11 can also be realized. .

As shown in Figures 1 to 3, the X direction in the figure is the longitudinal direction, and the Y direction is the transverse direction.

In this embodiment, the first transverse power unit 15 and the second transverse power unit 16 both include a transverse servo motor, and the transverse servo motors are respectively fixed on the first sliding seat and the second sliding seat, and the gantry 3 is provided with There is a transverse rack 5 extending transversely, and a transverse drive gear meshing with the rack is installed on the output shaft of the transverse servo motor.

The laser cutting machine decomposes the cutting movement, the plate 2 and the laser head 11 both move, and at the same time combines the first link mechanism 9 and the second link mechanism 8 to transmit power, so that the inertial force is reduced and the cutting accuracy is improved.

Example 2

As shown in Figure 4, the structure in this embodiment is the same as that in Embodiment 1, except that the plate 2 or strip cut in this embodiment is a coil, as shown in Figure 4, the coil is placed on the On the coiler and horizontally drawn by the tractor, the plate 2 or strip moves longitudinally above the work table 1. Both the unwinder and the haul-off machine are current conventional technologies, and the haul-off machine can be driven by a servo motor to precisely control the unwinding speed of the coil.

The actuators such as cylinders, servo motors, and rack and pinion mechanisms mentioned in this embodiment are all current conventional technologies. In April 2008, the fifth edition of the "Machine Design Manual" was printed for the twenty-eighth time in the fifth edition of Beijing. The specific structure and principle and other designs of cylinders, motors and other transmission mechanisms are disclosed in detail, which belongs to the prior art, and its structure is clear. The Modern Practical Pneumatic Technology No. In the 3rd edition of SMC training materials, the vacuum components, gas circuit and program control are disclosed in detail, indicating that the gas circuit structure in this embodiment is also an existing technology, which is clear and clear. It was published by the chemical industry on July 1, 2015 The book "Motor Drive and Speed Regulation" published by the company also introduces the control of the motor and the limit switch in detail, so the circuit and gas circuit connections are clear.

The above-described embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the scope of the present invention. On the basis of not departing from the design spirit of the present invention, any deformation and transformation made to the technical solution of the present invention shall fall within the scope of the present invention. Into the scope of protection determined by the claims of the present invention.

Claims (7)

1. A laser cutting machine for a plate or a strip, comprising a worktable and a laser head, characterized in that: it also includes a gantry across the top of the worktable, and the plate or strip can be drawn horizontally and longitudinally on the worktable Moving, the first slider and the second slider are installed horizontally and laterally on the gantry frame, the laser head is installed on the mounting base and set downward, and the first sliding base and the mounting base are hinged between the first slider and the mounting base. A link mechanism, a second link mechanism is hinged between the second sliding seat and the mounting seat or between the second sliding seat and the first link mechanism, the first slider and the second slider are respectively controlled by the first transverse The power unit and the second transverse power unit are driven to move independently to make the laser head move along the transverse direction or the longitudinal direction or the combined movement direction of the two. 2. A laser cutting machine for plates or strips as claimed in claim 1, characterized in that: said first linkage mechanism comprises two parallel first linkage monomers and second linkage monomers, The first connecting rod unit, the second connecting rod unit, the first sliding seat and the mounting seat constitute a parallelogram structure, and the two ends of the first connecting rod unit and the second connecting rod unit are respectively hinged on the first on slides and mounts. 3. A laser cutting machine for plates or strips as claimed in claim 2, characterized in that: said second link mechanism comprises a second link unit and an articulated arm, and said second link unit One end is hinged on the second sliding seat, the other end of the second connecting monomer is hinged to one end of the hinged arm, and the other end of the hinged arm is hinged to the middle of the adjacent second connecting rod monomer or to the mounting base. 4. A laser cutting machine for plates or strips according to any one of claims 1 to 3, characterized in that: the first transverse power device and the second transverse power device both include a transverse servo motor, and the The transverse servo motors are respectively fixed on the first sliding seat and the second sliding seat, and a transverse rack extending transversely is arranged on the gantry, and a transverse drive gear meshing with the rack is installed on the output shaft of the transverse servo motor. 5. A laser cutting machine for plates or strips as claimed in claim 4, characterized in that: the side of the worktable is provided with side supports, and the side supports are provided with longitudinal guide rails, and the vertical guide rails are vertically A longitudinal moving plate is slidably installed, and several traction fixtures for clamping the edge of the plate or strip are fixed on the longitudinal moving plate, and the longitudinal moving plate is driven to move longitudinally by the longitudinal traction power device. 6. A laser cutting machine for plates or strips as claimed in claim 5, characterized in that: the longitudinal power device includes a longitudinal servo motor, the longitudinal servo motor is fixed on the side bracket, and the longitudinal movement plate A longitudinal rack is fixed, and a longitudinal drive gear is fixed on the output shaft of the longitudinal servo motor, and the longitudinal drive gear meshes with the longitudinal rack. 7. A laser cutting machine for plates or strips as claimed in claim 4, characterized in that: said plates or strips are coils, said coils are placed on an uncoiler and drawn horizontally by a tractor Move the sheet or strip longitudinally over the work surface.