Gantry type laser cutting machine

Abstract

The gantry type laser cutting machine comprises a portal frame and a laser cutting machine head, gantry moving feet are fixedly installed at the two ends of the portal frame, and positioning roller sets are fixedly installed on the two sides of the gantry moving feet. A cutting sliding base is slidably installed on the surface of the portal frame, a lifting sliding set used for driving the laser cutting machine head to do lifting motion is arranged on the surface of the cutting sliding base, and the laser cutting machine head is fixedly installed at the output end of the lifting sliding set. The gantry moving foot comprises a moving disc, walking wheels, a first driving motor and a second driving motor, and stable movement of the gantry is achieved through the walking wheels. The positioning roller set comprises a fixed guide wheel, a fixed shaft rod, a rotating roller sleeve and a rubber sleeve piece, through cooperation of a sliding ring groove and a plunger head which are eccentrically designed, negative pressure adsorption of a suction cup groove in the rotating roller sleeve to the ground surface is achieved, and the road holding force and stability of the gantry moving foot and the positioning roller set are enhanced. The method can be widely applied to special-shaped cutting and complex machining scenes of the surfaces of the large flat plate workpieces, and has high flexibility and high-precision cutting effect.

Description

Technical Field

[0001] The invention relates to the technical field of laser cutting machines, in particular to a gantry type laser cutting machine. Background Art

[0002] At present, traditional gantry laser cutting machines widely use fixed slide rails and slider structures as the mobile support system of the gantry. Specifically, the slide rails are usually fixed on both sides of the processing table, and the gantry moves along the slide rails through rolling bearings installed on the sliders. At the same time, the cutting slide and laser cutting head are installed on the gantry to realize the cutting of the workpiece. The slide rail structure is simple in design and easy to implement, which is suitable for cutting flat workpiece surfaces. However, the design of the slide rail structure makes the equipment highly dependent on the flatness of the ground during operation, and cannot adapt to more complex processing environments, such as special-shaped cutting of large flat workpiece surfaces, or complex cutting scenarios that require high flexibility and adaptability.

[0003] However, since the traditional slide rail structure is fixedly installed on the surface of the processing table, its range of motion is limited by the length and layout of the slide rail, resulting in the movement area of ​​the gantry being limited to the fixed range of the slide rail, and it cannot flexibly adapt to the full coverage cutting needs of large flat workpieces, especially special-shaped cutting or complex processing scenarios. In addition, since the slide rail must be precisely aligned and maintain a high degree of straightness, the flatness requirements of the processing table are high, which further limits its applicability in the processing of uneven surfaces or large and complex workpieces. The traditional slide rail structure is easily affected by vibration and inertia during the movement of the cutting head during high-speed operation. Especially when processing large-area or special-shaped workpiece surfaces, due to the fixedness limitations of the slide rail, the slide rail surface may be worn, deformed and other problems, resulting in reduced equipment operation stability and cutting accuracy. In addition, the slide rail is highly dependent on the processing environment and is difficult to adapt to situations such as uneven ground and complex workpiece shapes, further limiting its actual application range.

[0004] In view of this, research and improvement are carried out on the existing problems, and a gantry laser cutting machine is provided to solve the current problems. The purpose is to solve the problems and improve the practical value through this technology. Summary of the invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related art. Traditional gantry laser cutting machines generally adopt a matching structure of a slide rail and a slider. In practical applications, the fixity of the slide rail imposes great restrictions on the flexibility and adaptability of the cutting equipment, especially in the special-shaped cutting or complex processing environment of large flat workpieces. The working range of the slide rail structure is limited, and it is easy to reduce the cutting accuracy due to vibration or uneven ground. The present invention effectively solves the above problems through a newly designed gantry foot shifting and positioning roller group structure, which significantly improves the applicability and operating stability of the equipment.

[0006] To this end, the technical solution adopted in the present invention is: A gantry laser cutting machine, comprising a gantry and a laser cutting head, characterized in that gantry feet are fixedly installed at both ends of the gantry, positioning roller groups are fixedly installed on both sides of the gantry feet, a cutting slide is slidably installed on the surface of the gantry, a lifting slide group for driving the laser cutting head to move up and down is provided on the surface of the cutting slide, and the laser cutting head is fixedly installed at the output end of the lifting slide group; The gantry moving foot comprises a moving disk, walking wheels, and a first driving motor and a second driving motor fixed to the surface of the moving disk. Spoke racks are fixedly installed on both sides of the moving disk. The walking wheels are several and evenly distributed and rotatably installed on the surface of the spoke racks. The walking wheels on the surface of the moving disk are synchronously driven by belts. The first driving motor is used for synchronous rotation driving of the walking wheels. The positioning roller group includes a fixed guide wheel, a fixed axis rod and a roller sleeve rotatably installed on one side of the fixed guide wheel, both sides of the roller sleeve are provided with pulley grooves that are transmitted to the surface of the second drive motor, the fixed axis rod and the fixed guide wheel are fixed to the surface of the spoke frame, the surface of the fixed axis rod is provided with a plurality of eccentric disks, and the inner side of the eccentric disk is provided with a plunger head, the surface of the roller sleeve is fixedly sleeved with a rubber kit, the surfaces of the roller sleeve and the rubber kit are provided with a plurality of one-to-one corresponding piston holes and suction cup grooves, a plunger head is slidably installed on the inner side of the piston hole, one end of the plunger head is connected to a sliding pin connecting rod slidably installed on the inner side of the slip ring groove, and the plurality of piston holes on the surface of the roller sleeve are evenly distributed in a spiral shape.

[0007] In a preferred example, the present invention can be further configured as follows: The plurality of piston holes are divided into a plurality of groups, each group of piston holes is distributed circumferentially, and adjacent groups of piston holes are arranged in an interlaced manner to achieve a continuous adsorption effect when the roller sleeve rotates.

[0008] The adhesive kit is a silicone material component, and the suction cup groove is designed to be outward-expanding and conical to enhance the adsorption effect and improve the grip and stability of the equipment during operation.

[0009] The center of the slip ring groove deviates from the axis of the fixed shaft rod and the roller sleeve, and is located above the axis of the roller sleeve, so that the plunger head produces the maximum negative pressure adsorption effect when facing the ground.

[0010] The input ends of the first driving motor and the second driving motor are electrically connected to a servo controller to synchronously control the traveling wheels and stably drive the rotating roller sleeve.

[0011] The laser cutting machine head is equipped with an autofocus module, which can adjust the laser focus position in real time to meet the cutting requirements of different thicknesses and materials and improve cutting accuracy.

[0012] Through the above structural design, the present invention not only overcomes the limitations of the traditional slide rail structure in terms of working range and flexibility, but also significantly improves the stability of equipment operation and cutting accuracy, providing a more reliable solution for complex processing scenarios.

[0013] The beneficial effects achieved by the present invention are: 1. In the present invention, the translational movement of the gantry is achieved by moving the gantry moving feet, replacing the traditional gantry slide rail structure, simplifying the overall structural design, and improving the flexibility and adaptability of the equipment, which is particularly suitable for special-shaped cutting of large flat workpiece surfaces or other complex processing environments.

[0014] 2. In the present invention, through the adsorption function of the positioning roller group, the negative pressure generated by the rotating roller sleeve and the rubber sleeve is adsorbed on the ground, which greatly improves the grip and stability of the gantry moving foot during operation and avoids the problem of reduced cutting accuracy due to vibration of the traditional slide rail during high-speed cutting.

[0015] 3. In the present invention, the reciprocating motion of several groups of plunger heads in each group of piston holes is realized by designing several eccentric slip ring grooves with different eccentric directions, so that the positioning roller group has several suction cup grooves at any rolling angle to achieve the adsorption effect on the ground surface, maintain the continuous grip effect of the gantry moving foot during movement, and improve the movement stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of a gantry foot shifting structure according to an embodiment of the present invention; Figure 3 A schematic diagram of the internal structure of a moving disk according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a positioning roller group according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the exploded structure of a positioning roller assembly according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the exploded structure of a fixed axis rod, a rotating roller sleeve and a rubber sleeve according to an embodiment of the present invention; Figure 7 The figure is a schematic diagram of the cross-sectional structure of a fixed axis rod, a rotating roller sleeve and a rubber sleeve according to an embodiment of the present invention.

[0017] Reference numerals: 100, gantry; 110, cutting slide; 120, lifting slide; 130, laser cutting machine head; 200, gantry moving foot; 210, moving plate; 220, walking wheel; 230, first driving motor; 240, second driving motor; 211, spoke rack; 300, positioning roller set; 310, fixed guide wheel; 320, fixed shaft rod; 330, rotating roller sleeve; 340, rubber set; 350, plunger head; 321, eccentric disk; 322, slip ring groove; 331, pulley groove; 332, piston hole; 341, suction cup groove; 351, sliding pin connecting rod. DETAILED DESCRIPTION

[0018] To make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in combination with specific implementations and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0019] It is to be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention.

[0020] The following is combined with Figure 1-Figure 7 A gantry laser cutting machine provided in some embodiments of the present invention is described. Example 1

[0021] This embodiment provides a gantry type laser cutting machine, as shown in the attached Figure 1 To Attachment Figure 7 As shown, it includes a gantry 100 and a laser cutting machine head 130. Gantry moving feet 200 are fixedly installed at both ends of the gantry 100, and positioning roller groups 300 are fixedly installed on both sides of the gantry moving feet 200. A cutting slide 110 is slidably installed on the surface of the gantry 100, and a lifting slide group 120 for driving the laser cutting machine head 130 to move up and down is provided on the surface of the cutting slide 110. The laser cutting machine head 130 is fixedly installed at the output end of the lifting slide group 120.

[0022] Gantry Foot 200 Structure and Function As attached Figure 2 and attached Figure 3 As shown, the gantry moving foot 200 includes a moving plate 210 , walking wheels 220 , a first driving motor 230 and a second driving motor 240 .

[0023] Spoke frames 211 are fixedly mounted on both sides of the moving plate 210 , and a plurality of running wheels 220 are evenly distributed and rotatably mounted on the surface of the spoke frames 211 through bearings.

[0024] The first driving motor 230 is connected to the traveling wheel 220 through a transmission belt, and is used to achieve synchronous driving of the traveling wheel 220, thereby driving the gantry 100 to move smoothly along a set path.

[0025] The second driving motor 240 is connected to the rotating roller sleeve 330 of the positioning roller set 300 through a belt, and drives the positioning roller set 300 to achieve rotational motion to assist in stabilizing the device.

[0026] Positioning roller set 300 structure and function As attached Figure 4 To Attachment Figure 7 As shown, the positioning roller set 300 is installed on both sides of the gantry moving foot 200 to improve the grip and stability of the equipment.

[0027] The positioning roller assembly 300 includes a fixed guide wheel 310, a fixed shaft rod 320, a rotating roller sleeve 330 and a rubber sleeve 340. The fixed shaft rod 320 and the fixed guide wheel 310 are fixedly mounted on the inner surface of the spoke frame 211.

[0028] A plurality of eccentric disks 321 are installed on the surface of the fixed shaft rod 320 . The inner side of the eccentric disk 321 is connected to the plunger head 350 via a slip ring groove 322 . The slip ring groove 322 is used to guide the sliding of the plunger head 350 .

[0029] The outer periphery of the rotating roller sleeve 330 is fixedly sleeved with a rubber sleeve 340 . The surfaces of the rotating roller sleeve 330 and the rubber sleeve 340 are respectively provided with a plurality of piston holes 332 and suction cup grooves 341 .

[0030] A plunger head 350 is slidably mounted inside the piston hole 332, one end of the plunger head 350 is slidably connected to the sliding ring groove 322 through a sliding pin connecting rod 351, and the other end is in sliding contact with the piston hole 332. The plurality of piston holes 332 of the roller sleeve 330 are evenly distributed along the spiral line to form a staggered structure.

[0031] How it works During the movement of the gantry moving foot 200 , the second driving motor 240 drives the roller sleeve 330 and the rubber sleeve 340 to rotate relative to the fixed shaft rod 320 .

[0032] When the roller sleeve 330 rotates, the eccentric disk 321 guides the plunger head 350 to slide back and forth along the slip ring groove 322 .

[0033] When the plunger head 350 is in the suction cup groove 341 position, a closed chamber is formed with the ground, and the gas in the piston hole 332 and the suction cup groove 341 is squeezed, thereby generating negative pressure inside the suction cup groove 341, adsorbing the ground to improve the grip and equipment stability.

[0034] When the roller sleeve 330 continues to rotate, the plunger head 350 returns to the initial position, completing the negative pressure release and starting the next round of adsorption action.

[0035] Laser cutting head 130 function An autofocus module is installed at the output end of the laser cutting head 130, and the laser focus position is adjusted through a servo controller to adapt to the processing requirements of different thicknesses and materials, thereby ensuring the accuracy of the cutting process.

[0036] Material selection and optimization The fixed axis rod 320 is made of high-strength alloy material and has high bending rigidity, ensuring that the equipment remains stable during operation.

[0037] The adhesive kit 340 is made of silicone material, and the suction cup groove 341 is designed to be outwardly expanded and conical, which enhances the adsorption effect and improves the grip.

[0038] The spoke frame 211 is made of high-strength aluminum alloy material, is lightweight and has a high load-bearing capacity, and can effectively bear the weight of the positioning roller set 300 and the gantry 100 . Implementation Effect

[0039] In the above embodiment, the adsorption grip design of the positioning roller group 300 effectively improves the operation stability of the equipment, especially when cutting high-precision workpieces, which can reduce the impact of vibration on the laser cutting quality. At the same time, the synchronous drive of the gantry shift foot 200 and the automatic focus module of the laser cutting head 130 cooperate to enable the equipment to efficiently adapt to complex processing environments and further improve processing efficiency and precision.

[0040] The working principle and use process of the present invention: The gantry laser cutting machine of the present invention realizes high-precision and high-stability laser cutting through the cooperation of the gantry frame 100, the gantry shifting foot 200, the positioning roller group 300, the cutting slide 110, the lifting slide group 120 and the laser cutting head 130. The specific working principle is as follows: 1. Movement coordination between the gantry 100 and the laser cutting head 130: The gantry 100 moves along the processing table through the gantry moving feet 200 at both ends, and the first driving motor 230 drives the walking wheels 220 to rotate synchronously, so that the entire gantry 100 moves smoothly.

[0041] The laser cutting head 130 moves up and down through the lifting slide 120 to adapt to the thickness of different workpieces. At the same time, the cutting slide 110 slides horizontally along the gantry 100 to achieve multi-axis movement of laser cutting.

[0042] 2. Stable support and movement of gantry foot 200: The positioning roller set 300 in the gantry shifting foot 200 drives the rotating roller sleeve 330 and the rubber sleeve 340 to rotate through the second driving motor 240 .

[0043] During the movement of the gantry shifting foot 200, the second driving motor 240 drives the roller sleeve 330 and the rubber sleeve 340 to rotate relative to the fixed guide wheel 310 and the fixed shaft rod 320, thereby causing the plunger head 350 inside the piston hole 332 to rotate around the outer circumference of the fixed shaft rod 320, and guiding the sliding pin connecting rod 351 to slide through the sliding ring groove 322. During the rotation of the roller sleeve 330, the plunger head 350 slides back and forth inside each piston hole 332, and further when the corresponding piston hole 332 is opposite to the ground, a negative pressure effect is generated inside the corresponding suction cup groove 341 and the piston hole 332, and the ground is adsorbed, thereby improving the grip effect and operation stability of the gantry shifting foot 200 and the positioning roller set 300.

[0044] Furthermore, by deviating the center of the slip ring groove 322 from and being located above the axis of the roller sleeve 330, when the roller sleeve 330 rotates and the plunger head 350 faces the ground, the plunger head 350 reaches the maximum position in the return motion on the inner side of the piston hole 332, thereby generating a greater negative pressure effect.

[0045] 3. Dynamic adjustment of laser cutting process: The laser cutting head 130 is equipped with an autofocus module, which can adjust the laser focus position in real time to ensure that the laser beam maintains an optimal focal distance with the workpiece surface to meet the cutting requirements of different thicknesses and materials.

[0046] The servo controller controls the movements of the first drive motor 230, the second drive motor 240, the cutting slide 110 and the lifting slide 120 respectively to achieve synchronization and coordination, thereby ensuring the accuracy of the cutting path.

[0047] 4. Auxiliary functions of positioning roller set 300: The positioning roller group 300 is fixedly installed by the fixed guide wheel 310 and the fixed shaft rod 320. The eccentric disk 321 on the fixed shaft rod 320 drives the plunger head 350 to slide back and forth in the piston hole 332, realizing the alternating work of adsorption and release, and improving the grip and stability of the equipment operation.

[0048] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A gantry-type laser cutting machine, comprising a gantry (100) and a laser cutting machine head (130), characterized in that: Both ends of the gantry (100) are fixedly mounted with gantry moving feet (200), and positioning roller groups (300) are fixedly mounted on both sides of the gantry moving feet (200). A cutting slide (110) is slidably mounted on the surface of the gantry (100), and a lifting slide group (120) for driving the laser cutting head (130) to move upward and downward is provided on the surface of the cutting slide group (110). The laser cutting head (130) is fixedly mounted on the output end of the lifting slide group (120); The gantry moving foot (200) comprises a moving disk (210), walking wheels (220), and a first driving motor (230) and a second driving motor (240) fixed to the surface of the moving disk (210); spoke racks (211) are fixedly mounted on both sides of the moving disk (210); the walking wheels (220) are multiple and evenly distributed and rotatably mounted on the surface of the spoke racks (211); the walking wheels (220) on the surface of the moving disk (210) are synchronously driven by belts; and the first driving motor (230) is used for synchronously rotating and driving the walking wheels (220); The positioning roller group (300) comprises a fixed guide wheel (310), a fixed shaft rod (320), and a rotating roller sleeve (330) rotatably mounted on one side of the fixed guide wheel (310); pulley grooves (331) for transmission with the surface of a second drive motor (240) are provided on both sides of the rotating roller sleeve (330); the fixed shaft rod (320) and the fixed guide wheel (310) are fixed to the surface of a spoke rack (211); a plurality of eccentric disks (321) are provided on the surface of the fixed shaft rod (320), and a plunger head (350) is provided on the inner side of the eccentric disk (321). ), a rubber sleeve (340) is fixedly sleeved on the surface of the rotating roller sleeve (330), a plurality of piston holes (332) and suction cup grooves (341) corresponding to each other are provided on the surfaces of the rotating roller sleeve (330) and the rubber sleeve (340), a plunger head (350) is slidably mounted on the inner side of the piston hole (332), one end of the plunger head (350) is connected to a sliding pin connecting rod (351) slidably mounted on the inner side of the sliding ring groove (322), and a plurality of piston holes (332) on the surface of the rotating roller sleeve (330) are evenly distributed in a spiral shape.

2. A gantry laser cutting machine according to claim 1, characterized in that: The plurality of piston holes (332) are divided into a plurality of groups, each group of piston holes (332) is distributed circumferentially, and adjacent groups of piston holes (332) are arranged in an interlaced manner.

3. The gantry laser cutting machine according to claim 1, characterized in that: The rubber set (340) is a silicone material component, the suction cup groove (341) is in the shape of an outwardly expanding cone, and the rubber set (340) is in the shape of a polygonal prism sleeve.

4. The gantry laser cutting machine according to claim 1, characterized in that: The centers of the eccentric disk (321) and the slip ring groove (322) on the surface of the fixed shaft rod (320) deviate from the axes of the fixed shaft rod (320) and the rotating roller sleeve (330), and the centers of the eccentric disk (321) and the slip ring groove (322) are located above the axis of the rotating roller sleeve (330), and the outer periphery of the plunger head (350) is in sliding contact with the inner side of the piston hole (332).

5. The gantry laser cutting machine according to claim 1, characterized in that: The sliding pin connecting rod (351) is in the shape of a round pin and has a connecting rod connected to the plunger head (350) on its surface. The plunger head (350) and the sliding pin connecting rod (351) are connected by a spherical joint to improve flexibility and stability during sliding.

6. The gantry laser cutting machine according to claim 1, characterized in that: The number of the fixed guide wheels (310) is two and they are symmetrically arranged on both sides of the rotating roller sleeve (330), and the belt pulley grooves (331) on both sides of the rotating roller sleeve (330) are rotatably connected to the fixed guide wheels (310).

7. The gantry laser cutting machine according to claim 1, characterized in that: The input ends of the first drive motor (230) and the second drive motor (240) are electrically connected to a servo controller, and the first drive motor (230) and the second drive motor (240) synchronously drive the walking wheel (220) and the rotating roller sleeve (330) to rotate.

8. The gantry laser cutting machine according to claim 1, characterized in that: The spoke rack (211) is made of a high-strength alloy material and is used to bear the load of the traveling wheel (220) and the positioning roller group (300).

9. The gantry laser cutting machine according to claim 1, characterized in that: An automatic focusing module is provided at the output end of the laser cutting machine head (130) for adjusting the laser focus to meet the cutting requirements of different materials.

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