Water-free cooling glass tube laser cutting device and glass tube production line

Abstract

The utility model provides a water-cooling-free glass tube laser cutting device and a glass tube production line, relates to the technical field of glass tube cutting, and solves the problems that in the existing glass tube laser cutting process, the focus position is difficult to control and adjust during laser cutting. The device comprises a laser cutting mechanism. The laser cutting mechanism comprises a laser cutter, a linear brake, a positioning plate and a spring. The laser cutter and the linear brake are mounted above the positioning plate, and the spring is arranged below the positioning plate; when the linear brake exerts downward acting force on the positioning plate, the spring exerts upward acting force on the positioning plate, the input load of the linear brake can be converted into a small stroke of the positioning plate, when the focus of laser needs to be adjusted, the positioning plate where the laser cutter is located is pressed downwards to move by a small distance, and the requirement for flexible adjustment of the focus can be met; and the longitudinal sliding rail moves, so that glass tubes with different specifications and different length requirements can be accurately cut.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting, in particular to a waterless cooling glass tube laser cutting device and a glass tube production line. Background Art

[0002] Laser cutting is a process that uses a laser beam to cut materials. They usually use a high-energy laser beam. The existing technology focuses the beam and concentrates it on a tiny area on the surface of the material to generate high temperature in that area, thereby cutting the material into the desired shape. Laser cutting machines are widely used in various industries, including manufacturing, automotive industry, aerospace, medical equipment manufacturing, etc. They can cut a variety of materials such as metal, plastic, wood, glass, etc., and have the characteristics of high precision, high efficiency and flexibility. Appendix 1 shows the cutting applications of lasers at different focal positions. The most suitable position for cutting glass tubes is zero focal position. The water-guided laser cutting in the existing equipment has fast molding and fine cutting, but it cannot solve the problem of water marks on the surface of the glass tube due to water pressure when cutting, and the equipment cost is extremely high.

[0003] In the patent with publication number CN220618760U, a cutting assembly and a glass tube production line are disclosed, and the patent provides a basic laser cutting solution for glass tubes.

[0004] However, since the position of the laser cutter is fixed, the focus position adjustment is not flexible when processing glass tubes of different specifications. Even if a vertical stroke feed mechanism is set to adjust the position of the laser cutter, the mechanical processing stroke is too large compared to the precise focal length of the laser beam, and the problem of unable to achieve precise adjustment of the laser cutter focus position no matter how the stroke is changed will occur. Utility Model Content

[0005] The utility model provides a water-free cooling glass tube laser cutting device to alleviate the problem in the prior art that the existing laser cutting head cannot flexibly adjust the laser focus.

[0006] In order to alleviate the above technical problems, the technical solution provided by the utility model is:

[0007] The water-free cooling glass tube laser cutting device comprises a laser cutting mechanism.

[0008] Furthermore, the laser cutting mechanism includes a laser cutter, a linear brake, a positioning plate and a spring, and a linear brake is provided on both sides of the laser cutter;

[0009] The laser cutting mechanism, the laser cutter and the linear brake are installed above the positioning plate, and the spring is arranged below the positioning plate;

[0010] Laser cutting mechanism, a distance measurement module is installed under the positioning plate, and is calibrated by laser distance measurement.

[0011] The water-free cooling glass tube laser cutting device also includes a gantry, which is provided with a bottom plate, the bottom plate is located below the positioning plate, and the lower end of the guide column is connected to the bottom plate;

[0012] Furthermore, a screw mechanism is provided on the gantry, and the screw mechanism is used to move the laser cutting mechanism up and down during cutting.

[0013] The water-free cooling glass tube laser cutting device is in the process of secondary fine-tuning and cutting;

[0014] When the linear brake applies a downward force to the positioning plate, the spring applies an upward force to the positioning plate, so that the input load of the linear brake can be converted into a small stroke of the positioning plate, thereby flexibly fine-tuning the focus of the laser beam.

[0015] The front end cover of the linear brake is provided with at least one guide column, and a plurality of springs are correspondingly provided under the positioning plate.

[0016] The linear brake is centered on one of the telescopic push rods, and the guide columns are arranged in a rectangular array around the center of the telescopic push rod, and a plurality of springs are correspondingly arranged under the positioning plate.

[0017] Furthermore, the spring is installed in the limiting groove of the positioning plate and always has a tendency to drive the positioning plate to move upward.

[0018] Furthermore, the telescopic push rod is fixed to the positioning plate through the threaded hole of the positioning plate to transfer the linear brake load to the positioning plate.

[0019] Furthermore, the guide column passes through the guide sleeve and cooperates with the positioning hole of the positioning plate, and is connected to the gantry bottom plate through the threaded hole.

[0020] A laser mirror jacket is arranged on the positioning plate, and the laser mirror jacket is positioned and matched with the laser mirror through a pin shaft.

[0021] The waterless cooling glass tube laser cutting device also includes a transverse sliding track. The waterless cooling glass tube laser cutting device is slidably connected to the transverse sliding track, and the transverse sliding track is perpendicular to the length direction of the glass tube.

[0022] The waterless cooling glass tube laser cutting device also includes a horizontally rolling feeding mechanism. To realize the driving of the feeding mechanism, the pulley and the roller shaft of the cam roller are connected through a bearing coupling. The other end of the pulley is connected to the motor through a coupling to provide power for the pulley mechanism and torque for the roller rotation. When feeding, the feeding mechanism below the laser cutting mechanism that makes the glass tube roll horizontally is composed of a single roller with a circular cam roller with a smooth notch on the roller, and the notch is arranged in the form of a notch away from the notch. When rolling, the notch sends the cut glass tube out of the processing area, and at the same time fills the unprocessed glass tube into the two circular grooves.

[0023] Based on the above technical solutions, the technical effects that can be achieved by the present invention are analyzed as follows:

[0024] The utility model provides a water-free cooling glass tube laser cutting device, comprising a laser cutting mechanism, the laser cutting mechanism comprising a laser cutter, a linear brake, a positioning plate and a spring;

[0025] The laser cutter and the linear brake are installed above the positioning plate, and the spring is arranged below the positioning plate; when the linear brake exerts a downward force on the positioning plate, the spring exerts an upward force on the positioning plate, and the input load of the linear brake can be converted into a small stroke of the positioning plate.

[0026] When the focus of the laser needs to be adjusted, the focusing position of the laser cutting device is in the vicinity of the focus. At this time, the feed rate of general mechanical processing equipment cannot meet the position adjustment requirements of the laser cutting device cutting processing. This device inputs a load to the linear brake, so that the telescopic push rod transfers the load to the positioning plate. The positioning plate presses down the spring. The spring is deformed due to the applied load, and the positioning plate where the laser cutter is located is pressed down and moved a small distance.

[0027] Therefore, the laser cutting device provided by the present solution can convert the large load of the linear brake into a small displacement of the laser cutter positioning plate caused by deformation. At the same time, by changing the load size, the requirement of flexible adjustment of the focus point can be met; and by moving by the longitudinal sliding track, precise cutting of glass tubes with different specifications and length requirements can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1The overall structural diagram of the laser cutting mechanism provided by the embodiment of the utility model;

[0030] Figure 2 A schematic diagram of the structure of the gantry screw mechanism in the utility model;

[0031] Figure 3 A schematic diagram of the structure of the transverse sliding track and the longitudinal sliding track in the utility model;

[0032] Figure 4 for Figure 1 The structural diagram of the middle positioning plate;

[0033] Figure 5 It is a three-dimensional schematic diagram of a laser mirror jacket;

[0034] Figure 6 A schematic structural diagram of a glass tube production line provided in an embodiment of the utility model.

[0035] Icons: 100-gantry; 110-screw mechanism; 200-laser cutting mechanism; 210-laser cutter; 211-laser mirror; 212-optical fiber connector; 213-laser mirror jacket; 220-linear brake; 223-telescopic push rod; 230-positioning plate; 231-distance measuring module; 120-bottom plate; 130-side plate; 250-spring; 260-guide column; 300-feeding mechanism; 310-roller; 320-cam roller; 330-pulley transmission mechanism; 410-lateral sliding track; 420-longitudinal sliding track; DETAILED DESCRIPTION

[0036] Embodiment 1

[0037] This embodiment provides a water-free cooling glass tube laser cutting device. Please refer to Figure 1-Figure 6 , the device comprises a laser cutting mechanism 200;

[0038] The laser cutting mechanism 200 includes a laser cutter 210, a linear brake 220, a positioning plate 230 and a spring 250;

[0039] The laser cutter 210 and the linear brake 220 are installed above the positioning plate 230, and the spring 250 is arranged below the positioning plate 230;

[0040] When the linear brake 220 applies a downward force to the positioning plate 230 , the spring 250 applies an upward force to the positioning plate 230 , and the input load of the linear brake 220 can be converted into a small stroke of the positioning plate 230 .

[0041] When the focus of the laser needs to be adjusted, the focusing position of the laser cutting device is in the vicinity of the focus. At this time, the feed rate of the general mechanical processing equipment cannot meet the position adjustment requirements of the laser cutting device cutting processing. The device inputs a load to the linear brake 220, so that the telescopic push rod 223 transfers the load to the positioning plate 230. The positioning plate 230 presses down the spring 250. The spring 250 is deformed due to the load applied, and the positioning plate 230 where the laser cutter 210 is located is pressed down and moved a small distance.

[0042] Therefore, the laser cutting device provided by this solution can convert the large load of the linear brake 220 into a small displacement of the positioning plate 230 of the laser cutter 210 caused by deformation, and at the same time, by changing the load size, the requirement of flexible adjustment of the focus point can be met.

[0043] In order to achieve the balance adjustment of the two sides of the laser cutter 210, the laser cutting device in this embodiment is provided with a linear brake 220 on both sides of the laser cutter 210. The above two sides can be defined as the two sides of the mirror image perpendicular to the cutting plane and with the laser cutter 210 as the axis. Of course, a linear brake 220 can also be provided in the front and rear of the laser cutter 210. Alternatively, a linear brake 220 is provided in the front, back, left and right directions to achieve the effect of applying a load to balance the left and right sides.

[0044] In order to ensure that the linear brake 220 can move in the vertical direction without deviation during the lifting process of the positioning plate 230, the cutting device in this embodiment further includes at least one guide post 260, which extends downward from the end of the linear brake 220 and passes through the positioning plate 230. Figure 1 As shown, one end of the guide column 260 is arranged at the end cover of the linear brake 220, passes through the positioning plate 230, and the other end is connected to the bottom plate 120 of the gantry 100. When the linear brake 220 pushes the positioning plate 230 to rise or fall, it moves along the guide column 260, so that the positioning plate 230 does not deviate. In this embodiment, according to different load application methods such as pneumatic and hydraulic, the specific guide methods and guide structures that can be selected are also different, and the guide function of the positioning plate 230 can be realized.

[0045] In order to achieve the motion balance of the two linear brakes 220 on both sides of the laser cutter 210 and evenly distribute the load to the positioning plate 230. The cutting device in this embodiment is provided with a plurality of guide posts 260, and the plurality of guide posts 260 are arranged in an array around the telescopic push rod 223 of the linear brake 220. When setting the positional relationship between the guide posts 260 and the telescopic push rod 223, if the load is too large, they can also be arranged in a circular array, so that the load can be dispersed while maintaining the motion balance of the linear brake 220.

[0046] The shape and structure of the laser cutter 210 are described in detail as follows:

[0047] The laser cutter 210 includes a laser mirror 211 and a laser mirror jacket 213;

[0048] The laser mirror jacket 213 is mounted on the laser mirror 211;

[0049] The laser mirror cover 213 is embedded in the positioning plate 230 .

[0050] With this layout, the impact of installation offset of the laser cutter 210 in both vertical and horizontal directions on cutting accuracy is effectively reduced, further improving the accuracy requirements for laser cutting during equipment installation. With the cooperation of the laser mirror jacket 213 and the pin shaft, the vertical shaking offset of the laser mirror 211 is reduced. The laser jacket is fixed to the horizontal positioning plate 230 by the pin shaft to prevent its offset from affecting the cutting direction and generating a cutting inclination angle. Similarly, this structure or other positioning structures can be used to achieve the required level of horizontality and verticality of the laser.

[0051] In order to achieve the supporting effect on the laser cutter 210 and the linear brake 220, the cutting device in this embodiment also includes a gantry 100, and the gantry 100 is provided with a base plate 120, and the base plate 120 is located below the positioning plate 230, and the lower end of the guide column 260 is connected to the base plate 120; the cutter is effectively set on the equipment's transverse sliding track 410. Because it has certain requirements for assembly and structural strength, when designing the side plate 130 and base plate 120 of the gantry 100, it should be considered whether there is interference with other workpieces during assembly and whether there will be motion interference with the linear brake 220 when it moves, and whether it can achieve good load-bearing stability. Ribs can be appropriately set to strengthen its structural rigidity, so as to achieve the supporting effect on the above workpieces.

[0052] The spring 250 is mounted on the guide column 260, and the upper end surface of the spring 250 abuts against the lower surface of the positioning plate 230, and the lower end surface of the spring 250 abuts against the upper surface of the bottom plate 120. Regarding the spring 250, it is also necessary to add that the spring 250 always has a tendency to drive the positioning plate 230 to move upward, so when the positioning plate 230 is subjected to the load transmitted by the linear brake 220, the spring 250 can apply force to it in the reverse direction without deflection. Regarding the selection of the spring 250, in order to make the ability to adjust the focus as strong as possible when subjected to deformation and high precision, a rectangular spring 250 with a high compression coefficient can be selected. This makes the spring 250 more capable of converting large loads into small deformations.

[0053] Regarding the gantry 100, further, the gantry 100 is also provided with a side plate 130, and a lead screw mechanism 110 is arranged inside the side plate 130, and the lead screw mechanism 110 is used to drive the laser cutting mechanism 200 to move up and down. Control the normal vertical feed of the laser cutter 210 during the cutting process. Here, the requirement we put forward is that the lead screw mechanism 110 should be smooth and stable during movement, and there should be no large movement deviation.

[0054] During the entire cutting process, the laser cutting mechanism 200 cooperates with the lead screw structure of the gantry 100. After the distance measurement module 231 below the positioning plate 230 calibrates the distance measurement of the actual glass tube workpiece, the lead screw mechanism 110 drives the laser cutting mechanism 200 to move up and down as a whole to perform the first coarse adjustment of the surface of the workpiece (glass tube) and the focal position. This process can control the feed rate requirements in general machining, but when approaching the focal neighborhood, no matter how the lead screw structure moves, the focal length always remains floating in the neighborhood. At this time, the linear brake 220 is controlled by the input load to complete the downward pressure action, thereby driving the positioning plate 230 to move down and compress the spring 250 to form a slight deformation, so that the laser cutter 210 moves the unconventional machining feed rate, completing the precise control of the focus adjustment.

[0055] Embodiment 2

[0056] This embodiment provides a glass tube production line, which includes the waterless cooling glass tube laser cutting device in Embodiment 1; the shape and structure of the waterless cooling glass tube laser cutting device are not described in detail here.

[0057] The assembly line also includes a transverse sliding track 410, and the waterless cooling glass tube laser cutting device is slidably connected to the transverse sliding track 410. The transverse sliding track 410 is perpendicular to the length direction of the glass tube. The transverse sliding track 410 provides a function of limiting the lateral deviation of the laser beam falling on the glass tube during assembly line processing.

[0058] The assembly line also includes a longitudinal sliding track 420, and the transverse sliding track 410 is slidably connected to the longitudinal sliding track 420 through two pillars. The longitudinal sliding track 420 is parallel to the length direction of the glass tube. The longitudinal sliding track 420 provides the function of cutting the glass tube into different lengths when the laser beam is cut during the assembly line processing.

[0059] The transverse sliding track 410 and the longitudinal sliding track 420 included in the assembly line are connected by pulleys, and their structure, size and connection method can be changed according to different processing environments and actual production capital budgets.

[0060] In the glass tube cutting production, by controlling the position of the laser cutter 210 by sliding the rails in the horizontal and vertical directions, good cutting performance can be achieved when cutting glass tubes of different thicknesses, lengths and sizes, thereby further realizing the automation of glass tube cutting.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of each embodiment of the utility model.

Claims

1. A water-free cooling glass tube laser cutting device, characterized in that: It includes a laser cutting mechanism (200); The laser cutting mechanism (200) comprises a laser cutter (210), a linear brake (220), a positioning plate (230) and a spring (250); The laser cutter (210) and the linear brake (220) are installed above the positioning plate (230), and the spring (250) is arranged below the positioning plate (230); When the linear brake (220) applies a downward force to the positioning plate (230), the spring (250) applies an upward force to the positioning plate (230), and the input load of the linear brake (220) can be converted into a small stroke of the positioning plate (230).

2. The water-free cooling glass tube laser cutting device according to claim 1, characterized in that: One linear brake (220) is provided on each side of the laser cutter (210).

3. The water-free cooling glass tube laser cutting device according to claim 2, characterized in that: The invention also includes at least one guide post (260), wherein the guide post (260) extends downward from the end of the linear brake (220) and passes through the positioning plate (230).

4. The water-free cooling glass tube laser cutting device according to claim 3, characterized in that: A plurality of guide posts (260) are provided, and the plurality of guide posts (260) are arranged in an array around the telescopic push rod (223) of the linear brake (220).

5. The water-free cooling glass tube laser cutting device according to claim 4, characterized in that: The spring (250) always has a tendency to drive the positioning plate (230) to move upward.

6. The water-free cooling glass tube laser cutting device according to claim 5, characterized in that: The laser cutter (210) comprises a laser mirror (211) and a laser mirror jacket (213); The laser mirror jacket (213) is mounted on the laser mirror (211); The laser mirror jacket (213) is embedded in the positioning plate (230).

7. The water-free cooling glass tube laser cutting device according to claim 6, characterized in that: It also includes a gantry (100), wherein the gantry (100) is provided with a bottom plate (120), wherein the bottom plate (120) is located below the positioning plate (230), and the lower end of the guide column (260) is connected to the bottom plate (120); The spring (250) is sleeved on the guide column (260), and the upper end surface of the spring (250) abuts against the lower surface of the positioning plate (230), and the lower end surface of the spring (250) abuts against the upper surface of the bottom plate (120).

8. The water-free cooling glass tube laser cutting device according to claim 7, characterized in that: The gantry (100) is further provided with a side plate (130), and a lead screw mechanism (110) is arranged inside the side plate (130), and the lead screw mechanism (110) is used to drive the laser cutting mechanism (200) to move up and down.

9. A glass tube production line, characterized in that: A device for laser cutting a glass tube without water cooling as claimed in any one of claims 1 to 8; It also comprises a transverse sliding track (410), the water-free cooling glass tube laser cutting device is slidably connected to the transverse sliding track (410), and the transverse sliding track (410) is perpendicular to the length direction of the glass tube.

10. The glass tube production line according to claim 9, characterized in that: It also comprises a longitudinal sliding track (420), the transverse sliding track (410) is slidably connected to the longitudinal sliding track (420) via two pillars, and the longitudinal sliding track (420) is parallel to the length direction of the glass tube.

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