Laser cutting platform

Abstract

The utility model discloses a laser cutting platform which comprises a working platform, a laser cutting device, a laser cutting device and a laser cutting device. And the limiting plate is horizontally placed in the limiting cavity, the outer side wall of the limiting plate is tightly attached to the side wall of the limiting cavity, the limiting plate is provided with a limiting hole consistent with the shape of the product to be cut, and the limiting hole is communicated with at least part of the air hole. The lens cutting device has the advantages of being simple in structure, low in improvement cost and the like, the number of the limiting plates placed on the working platform can be selected according to cutting requirements, each limiting plate is provided with a limiting hole matched with a lens to be cut in shape, after the lens is placed in the limiting holes, the air holes can be vacuumized to adsorb and fix the lens, and the lens cutting efficiency is improved. Therefore, the position of the lens cannot deviate during cutting, and the laser cutting precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting technology, and in particular to a laser cutting platform. Background Technology

[0002] Laser cutting technology utilizes a focused, high-power-density laser beam to irradiate a 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, thus cutting the workpiece. In the production of optical lenses, large lenses need to be laser-cut into equal-sized smaller pieces. Several suction holes are distributed on the cutting platform. When a lens is placed on the platform, a vacuum is drawn outward through these holes to hold the lens in place. The cutting platform also has a groove; the lens adheres tightly to the inner wall of the groove for proper positioning.

[0003] However, since the size of the lenses varies, small lenses are close to the inner wall of the groove, which may cause the lens to not cover the suction hole. As a result, the suction hole cannot draw a vacuum to hold the lens in place, and the lens may shift, affecting the cutting accuracy of the lens. Utility Model Content

[0004] The purpose of this invention is to solve the above-mentioned problems by designing a laser cutting platform that addresses the issue of optical lenses being inconvenient to position and fix on the laser cutting platform due to their small size.

[0005] The technical solution of this utility model to achieve the above objectives is a laser cutting platform, comprising:

[0006] A working platform, wherein a limiting cavity is provided on the working platform, and the limiting cavity is densely covered with a number of air holes for outward air extraction;

[0007] At least one limiting plate is placed flat in the limiting cavity, and the outer side wall of the limiting plate is in close contact with the side wall of the limiting cavity. The limiting plate is provided with a limiting hole that matches the shape of the product to be cut, and the limiting hole communicates with at least a portion of the air holes.

[0008] Preferably, a breathable protective membrane is provided between the working platform and the limiting plate.

[0009] Preferably, a partition is provided between the working platform and the limiting plate. The partition is placed flat in the limiting cavity, and the outer side wall of the partition is in close contact with the side wall of the limiting cavity. The partition is densely covered with a number of adsorption holes that correspond one-to-one with the air holes on the working platform.

[0010] Preferably, the limiting hole is in communication with at least a portion of the adsorption holes on the partition.

[0011] Preferably, the partition is made of a transparent material, and a breathable protective film is provided between the partition and the limiting plate.

[0012] Preferably, the bottom of the working platform has a negative pressure chamber that communicates with several air holes. The negative pressure chamber is connected to an external air extraction mechanism, which can extract air outward to create negative pressure inside the negative pressure chamber.

[0013] Its advantages over existing technologies are:

[0014] This invention has the advantages of simple structure and low modification cost. The number of upper limit plates placed on the work platform can be selected according to the cutting requirements. Each upper limit plate has a limiting hole that matches the shape of the lens to be cut, which positions the lens. After the lens is placed in the limiting hole, the air hole will draw a vacuum to adsorb and fix the lens so that the position of the lens will not shift during cutting, thus improving the precision of laser cutting. The size of the upper limit holes on the upper limit plates can be different, so different combinations of upper limit plates can be selected and arranged on the work platform according to the requirements, which can effectively ensure the accuracy of the lens position and is more suitable for positioning and cutting of smaller lenses. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the laser cutting platform in a preferred embodiment of the present invention;

[0016] Figure 2 This is a bottom-view structural diagram of a laser cutting platform;

[0017] Figure 3 This is an exploded structural diagram of the working platform, partition, and limiting plate in a laser cutting platform.

[0018] In the diagram, 1 is the working platform; 101 is the air vent; 102 is the negative pressure chamber; 2 is the limiting plate; 201 is the limiting hole; 3 is the partition; and 301 is the adsorption hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] like Figures 1-3As shown in the figure, the preferred embodiment of this utility model proposes a laser cutting platform, which mainly includes a working platform 1, a partition 3, and a limiting plate 2. A rectangular limiting cavity is formed on the upper surface of the working platform 1 to accommodate the partition 3 and the limiting plate 2 and to position them. A number of equally spaced air holes 101 are densely distributed on the bottom surface of the limiting cavity. At the same time, a rectangular negative pressure cavity 102 is formed on the bottom surface of the working platform 1. The negative pressure cavity 102 is connected to all the air holes 101 and is connected to an external air extraction mechanism. The air extraction mechanism extracts air outward, creating a negative pressure in the negative pressure cavity 102. The air holes 101 connected to the negative pressure cavity 102 also create a negative pressure, thereby attracting the limiting plate 2.

[0021] refer to Figure 3 The partition 3 has a number of adsorption holes 301 densely distributed on it, and each adsorption hole 301 corresponds one-to-one with the air hole 101 on the working platform 1. The size of the partition 3 is smaller than the cross-sectional size of the limiting cavity. Therefore, when placing it, the partition 3 should be placed at the corner of the limiting cavity, and the outer wall of the partition 3 will be in close contact with the side wall of the limiting cavity. This can position the partition 3 so that the adsorption holes 301 on the partition 3 are connected to the air holes 101 on the bottom surface of the limiting cavity.

[0022] A limiting plate 2 is placed on top of the partition 3. The limiting plate 2 has multiple limiting holes 201 that correspond to the shape of the lens to be cut. Depending on the product size, the dimensions of all the limiting holes 201 may be the same or different. Their shapes are also determined by the shape of the lens to be cut. The limiting holes 201 are used to place the lens to be cut and to limit its movement, preventing it from shifting and affecting cutting accuracy.

[0023] Each limiting hole 201 on the limiting plate 2 is connected to a portion of the adsorption holes 301. Therefore, when the lens to be cut is placed in the limiting hole 201, the adsorption holes 301 on the partition plate 3 will be drawn outward along with the air holes 101 on the working platform 1. The lens to be cut will be adsorbed and fixed through the adsorption holes 301, so that the lens to be cut is tightly attached to the partition plate 3.

[0024] Above the work platform 1 is a laser cutting device. Since the laser has a certain penetrating power, in order to prevent the laser from cutting the partition 3, a protective film is set on the upper surface of the partition 3, between the partition 3 and the limiting plate 2. The protective film has a certain air permeability and can block the laser. Therefore, the laser will not cut the partition 3, and it will not affect the vacuuming of the adsorption hole 301.

[0025] Depending on the size of the limiting cavity, multiple partitions 3 and limiting plates 2 can be arranged inside the limiting cavity. After all the lenses to be cut on a certain limiting plate 2 have been cut, the entire set of partitions 3 and limiting plates 2 can be removed and reloaded. This allows for quick material switching without having to remove the cut lenses one by one and reload them, thus increasing the material loading speed, saving material changeover time, and ultimately improving the cutting efficiency of optical lenses.

[0026] In other technical solutions, the partition 3 can be omitted, and only the limiting plate 2 can be used. The limiting plate 2 is placed flat inside the limiting cavity, with its outer wall tightly against the inner wall of the limiting cavity. A protective film covering several pores 101 is placed on the bottom surface of the limiting cavity to isolate the laser and prevent laser cutting onto the working platform 1, while not affecting the vacuum pumping outwards through the pores 101. The lens to be cut is placed in the limiting hole 201 on the limiting plate 2, and then the pores 101 pump outwards to hold the lens in place.

[0027] The aforementioned partition 3 is made of transparent material so that it can be observed whether the adsorption holes 301 on the partition 3 are aligned with the air holes 101 on the working platform 1.

[0028] The limiting plate 2 can be of various sizes, and different sizes of limiting plates 2 can be combined and placed on the work platform 1 according to the different sizes of the lenses to be cut. This means that lenses of different sizes can be cut in batches simultaneously. After cutting, the cut lenses can be removed as a whole along with the corresponding partition 3 and limiting plate 2 for rework. No major modifications to the work platform 1 are required to meet the positioning needs of lenses of different sizes.

[0029] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A laser cutting platform, characterized in that, include: The working platform (1) is provided with a limiting cavity, and the limiting cavity is densely covered with a number of air holes (101) for outward air extraction. At least one limiting plate (2) is placed flat in the limiting cavity, and the outer side wall of the limiting plate (2) is in close contact with the side wall of the limiting cavity. The limiting plate (2) is provided with a limiting hole (201) that matches the shape of the product to be cut. The limiting hole (201) is connected to at least a portion of the air holes (101).

2. The laser cutting platform according to claim 1, characterized in that, A breathable protective membrane is provided between the working platform (1) and the limiting plate (2).

3. The laser cutting platform according to claim 1, characterized in that, A partition (3) is provided between the working platform (1) and the limiting plate (2). The partition (3) is placed flat in the limiting cavity, and the outer side wall of the partition (3) is in close contact with the side wall of the limiting cavity. The partition (3) is densely covered with a number of adsorption holes (301) that correspond one-to-one with the air holes (101) on the working platform (1).

4. The laser cutting platform according to claim 3, characterized in that, The limiting hole (201) is connected to at least a portion of the adsorption holes (301) on the partition plate (3).

5. The laser cutting platform according to claim 4, characterized in that, The partition (3) is made of transparent material, and a breathable protective film is provided between the partition (3) and the limiting plate (2).

6. The laser cutting platform according to any one of claims 1-5, characterized in that, The bottom of the working platform (1) is formed with a negative pressure chamber (102) that communicates with a number of air holes (101). The negative pressure chamber (102) is connected to an external air extraction mechanism, which can extract air outward to create negative pressure in the negative pressure chamber (102).

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