Automatic focusing structure

Abstract

The utility model discloses an automatic focusing structure. The automatic focusing structure comprises an outer mounting cylinder; the inner mounting cylinder is arranged on the inner side of the outer mounting cylinder; the compression spring is arranged between the outer mounting cylinder and the inner mounting cylinder; the focusing mounting cylinder is arranged on the inner side of the inner mounting cylinder, and the focusing mounting cylinder and the inner mounting cylinder can synchronously move up and down relative to the outer mounting cylinder; the focusing lens is horizontally fixed in the middle of the focusing mounting cylinder; the anti-collision base is arranged below the outer mounting cylinder, a light transmitting channel through which a focusing light path can pass is formed in the middle of the anti-collision base, and a first air inlet is formed in the anti-collision base. According to the design of the utility model, the air pressure can be controlled through the air inflow, and the compression amount of the compression spring is controlled through the change of the air pressure, so that the up-and-down displacement of the focusing lens is controlled, automatic focusing is realized, the adjusting precision is high, the operation is convenient, and the laser requirements of products with different focal length requirements can be met.

Description

Technical Field

[0001] The utility model belongs to the field of automation, and in particular relates to an automatic focusing structure. Background Art

[0002] At present, in laser cutting production, the focusing method of the laser head is mostly manual focusing, which cannot achieve real-time focusing according to different focal length requirements. The manual focusing operation is inefficient and the accuracy is not accurate, and high accuracy cannot be guaranteed. Therefore, it is urgent to design an automatic focusing structure to realize automatic operation to improve operation efficiency and accuracy.

[0003] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the utility model and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the utility model. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide an automatic focusing structure.

[0005] In order to achieve the above purpose and other related purposes, the technical solution provided by the utility model is: an automatic focusing structure, comprising:

[0006] External mounting cylinder;

[0007] An inner mounting tube, the inner mounting tube being arranged on the inner side of the outer mounting tube;

[0008] A compression spring, the compression spring being arranged between the outer mounting tube and the inner mounting tube;

[0009] A focusing installation tube, wherein the focusing installation tube is arranged on the inner side of the inner installation tube, and the focusing installation tube and the inner installation tube can be synchronously moved up and down relative to the outer installation tube;

[0010] A focusing lens, wherein the focusing lens is horizontally fixed at the middle of the focusing mounting tube;

[0011] The anti-collision base is arranged below the outer mounting tube, a light-transmitting passage is provided in the middle of the anti-collision base for allowing the focused light path to pass through, and a first air inlet is provided in the anti-collision base.

[0012] In this solution, the air pressure is controlled by the air intake volume. The change of air pressure can make the compression spring have different compression amounts, thereby realizing the control of the up and down displacement of the focusing lens, realizing automatic focusing, high adjustment accuracy and easy operation.

[0013] Furthermore, an adapter is provided below the anti-collision base, a connecting sleeve is provided below the adapter sleeve, and a laser head is provided below the connecting sleeve. In this solution, the structure with automatic focusing function is connected to the laser head through the adapter and the connecting sleeve, and the laser cutting of the product can be achieved in cooperation with the laser head, meeting the laser requirements of products with different focal length requirements.

[0014] Furthermore, the inner wall of the outer mounting tube is provided with a first step; the outer wall of the inner mounting tube is provided with a second step; the upper end of the compression spring is provided against the first step, and the lower end of the compression spring is provided against the second step; the outer wall of the focusing mounting tube is provided with a third step, and the third step is provided against the lower end of the inner mounting tube. In this solution, the first step of the inner wall of the outer mounting tube and the second step of the outer wall of the inner mounting tube respectively abut against the upper end and the lower end of the compression spring, thereby realizing stable installation of the compression spring between the outer mounting tube and the inner mounting tube; and the third step of the outer wall of the focusing mounting tube abuts against the lower end of the inner mounting tube, thereby realizing synchronous upward movement of the focusing mounting tube and the inner mounting tube.

[0015] Furthermore, a light-transmitting hole is provided in the middle of the anti-collision base, and a horizontal protective lens is provided below the light-transmitting hole. In this solution, the protective lens can be provided to isolate foreign matter and protect the focusing lens, thereby preventing the molten ash generated during the laser cutting process from contaminating the focusing lens.

[0016] Further, a lens mounting seat is embedded in the lower end of the anti-collision base, and the protective lens is arranged on the lens mounting seat. In this scheme, the protective lens is fixed by embedding the lens mounting seat in the lower end of the anti-collision base, and the installation is firm, which is convenient for the installation and removal of the protective lens.

[0017] Furthermore, a pressure cover is provided above the protective lens, and an elastic pad is provided below the protective lens. In this solution, the pressure cover is provided above the protective lens to improve the stability of the installation of the protective lens; the elastic pad is provided below the protective lens to buffer the protective lens and prevent it from being broken due to impact.

[0018] Furthermore, the adapter is provided with a second air inlet. In this solution, the adapter is provided with a second air inlet, and air can be blown through the second air inlet to blow away the slag sucked in during the cutting process, thereby preventing foreign matter from contaminating the inner cavity.

[0019] Furthermore, an annular wind sleeve is provided inside the adapter, and an air duct is provided between the adapter and the annular wind sleeve, and the opening of the air duct is provided upward. In this solution, an annular wind sleeve is provided inside the adapter to form an air duct, which can focus and enhance the wind force here, and the opening of the air duct is provided upward, which can blow toward the protective lens, thereby ensuring that the mirror surface of the protective lens is clean and the focusing light path is unobstructed.

[0020] Furthermore, the rotation center lines of the outer mounting tube, the inner mounting tube, and the focusing mounting tube are arranged to coincide with each other. In this solution, the rotation center lines of the outer mounting tube, the inner mounting tube, and the focusing mounting tube are arranged to coincide with each other, so that the three can be precisely assembled and a precise transmission channel can be provided for the focusing light path.

[0021] Furthermore, the center lines of the focusing lens and the protective lens are arranged to coincide with each other. In this solution, the center lines of the focusing lens and the protective lens are arranged to coincide with each other, so that the focusing light path is vertical and has no deviation, thereby ensuring the accuracy of the laser position.

[0022] Due to the application of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0023] The automatic focusing structure designed in the utility model can control the air pressure by the air intake volume, and control the compression amount of the compression spring by the change of the air pressure, so as to control the up and down displacement of the focusing lens, realize automatic focusing, have high adjustment accuracy, convenient operation, and high operating efficiency, and can meet the laser requirements of products with different focal length requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an overall external schematic diagram of the focusing structure of the utility model;

[0025] Figure 2 This is a schematic cross-sectional view of the interior of the focusing structure of the utility model;

[0026] Figure 3 It is a schematic cross-sectional view of the interior of the anti-collision base and the adapter of the utility model;

[0027] In the above figures, 1. outer mounting tube; 2. inner mounting tube; 3. compression spring; 4. focusing mounting tube; 5. focusing lens; 6. anti-collision base; 7. first air inlet; 8. adapter seat; 9. connecting sleeve; 10. laser head; 11. first step; 12. second step; 13. third step; 14. light-transmitting hole; 15. protective lens; 16. lens mounting seat; 17. pressure cover; 18. spring pad; 19. second air inlet; 20. annular wind sleeve; 21. air duct. DETAILED DESCRIPTION

[0028] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0029] It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0032] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0033] Example 1: See Figure 1 and Figure 2 As shown, this embodiment provides an automatic focusing structure, including:

[0034] External mounting tube 1;

[0035] An inner mounting tube 2, which is arranged on the inner side of the outer mounting tube 1;

[0036] A compression spring 3, which is arranged between the outer mounting tube 1 and the inner mounting tube 2;

[0037] A focusing mounting tube 4, which is arranged on the inner side of the inner mounting tube 2, and the focusing mounting tube 4 and the inner mounting tube 2 can be synchronously moved up and down relative to the outer mounting tube 1;

[0038] A focusing lens 5, wherein the focusing lens 5 is horizontally fixed at the middle of the focusing mounting tube 4;

[0039] The anti-collision base 6 is arranged below the outer mounting tube 1 , a light-transmitting passage is provided in the middle of the anti-collision base 6 for allowing the focused light path to pass through, and a first air inlet 7 is provided in the anti-collision base 6 .

[0040] A closed cavity with a variable volume is formed between the anti-collision base 6 , the focusing mounting tube 4 , the focusing lens 5 and the outer mounting tube 1 , and air intake and air exhaust are realized through the first air inlet 7 .

[0041] Principle: Air intake and exhaust are realized through the first air inlet 7. When the air intake reaches a certain value, the generated air pressure can push the focusing mounting tube 4 upward, and the focusing mounting tube 4 can continue to compress the spring 3 upward with the inner mounting tube 2, and the focusing lens 5 fixed on the focusing mounting tube 4 also moves with the focusing mounting tube 4; when the focusing lens 5 needs to move upward, the first air inlet 7 increases the air intake, so that the air pressure is greater than the current spring force of the compression spring 3, and the focusing lens 5 moves upward; when the focusing lens 5 needs to move downward, the first air inlet 7 reduces the air intake, so that the air pressure is less than the current spring force of the compression spring 3, and the focusing lens 5 moves downward.

[0042] In this embodiment, the air pressure is controlled by the air intake volume. The change of air pressure can make the compression spring 3 have different compression amounts, thereby realizing the control of the up and down displacement of the focusing lens 5, realizing automatic focusing, high adjustment accuracy and convenient operation.

[0043] Example 2: See Figure 1 As shown, this embodiment is a further improvement on the first embodiment, and its specific method is as follows: an adapter seat 8 is arranged below the anti-collision base 6, a connecting sleeve 9 is arranged below the adapter sleeve, and a laser head 10 is arranged below the connecting sleeve 9.

[0044] In this embodiment, the structure with automatic focusing function is connected to the laser head 10 through the adapter 8 and the connecting sleeve 9, and can cooperate with the laser head 10 to realize laser cutting of products and meet the laser requirements of products with different focal length requirements.

[0045] Example 3: See Figure 2 As shown, this embodiment is a further improvement on the basis of the first embodiment, and its specific method is as follows: the inner wall of the outer mounting tube 1 is provided with a first step 11; the outer wall of the inner mounting tube 2 is provided with a second step 12; the upper end of the compression spring 3 is arranged against the first step 11, and the lower end of the compression spring 3 is arranged against the second step 12; the outer wall of the focusing mounting tube 4 is provided with a third step 13, and the third step 13 is arranged against the lower end of the inner mounting tube 2.

[0046] In this embodiment, the first step 11 on the inner wall of the outer mounting tube 1 and the second step 12 on the outer wall of the inner mounting tube 2 respectively press against the upper end and the lower end of the compression spring 3, thereby achieving stable installation of the compression spring 3 between the outer mounting tube 1 and the inner mounting tube 2; and the third step 13 on the outer wall of the focusing mounting tube 4 presses against the lower end of the inner mounting tube 2, thereby achieving synchronous upward movement of the focusing mounting tube 4 and the inner mounting tube 2.

[0047] Example 4: See Figure 2 and Figure 3 As shown, this embodiment is a further improvement on the first embodiment, and its specific method is as follows: a light-transmitting hole 14 is opened in the middle of the anti-collision base 6, and a horizontal protective lens 15 is arranged below the light-transmitting hole 14.

[0048] In this embodiment, the protective lens 15 can be provided to isolate foreign matter and protect the focusing lens 5 , thereby preventing the molten ash generated during the laser cutting process from contaminating the focusing lens 5 .

[0049] Example 5: See Figure 2 and Figure 3 As shown, this embodiment is a further improvement on the basis of the fourth embodiment, and its specific method is as follows: a lens mounting seat 16 is embedded at the lower end of the anti-collision base 6, and the protective lens 15 is arranged on the lens mounting seat 16.

[0050] In this embodiment, the protective lens 15 is fixed by embedding a lens mounting seat 16 at the lower end of the anti-collision base 6 , so that the protective lens 15 is firmly mounted and the installation and removal of the protective lens 15 are convenient.

[0051] Example 6: See Figure 2 and Figure 3 As shown, this embodiment is a further improvement on the basis of the fifth embodiment, and its specific method is as follows: a pressure cover 17 is provided above the protective lens 15 , and a spring pad 18 is provided below the protective lens 15 .

[0052] In this embodiment, a pressure cover 17 is provided above the protective lens 15 to improve the stability of the installation of the protective lens 15; a spring pad 18 is provided below the protective lens 15 to cushion the protective lens 15 and prevent it from being broken due to impact.

[0053] Example 7: See Figure 1 As shown, this embodiment is a further improvement on the sixth embodiment, and its specific method is as follows: a second air inlet 19 is opened on the adapter 8.

[0054] In this embodiment, a second air inlet 19 is provided on the adapter 8, and air can be blown through the second air inlet 19 to blow away the slag sucked in during the cutting process, thereby preventing foreign matter from contaminating the inner cavity.

[0055] Example 8: See Figure 2 and Figure 3 As shown, this embodiment is a further improvement on the basis of the seventh embodiment, and its specific method is: an annular air sleeve 20 is provided on the inner side of the adapter seat 8, and an air duct 21 is provided between the adapter seat 8 and the annular air sleeve 20, and the opening of the air duct 21 is provided upward.

[0056] In this embodiment, an annular wind sleeve 20 is arranged inside the adapter 8 to form an air duct 21, which can focus and enhance the wind force here. The opening of the air duct 21 is arranged upward and can blow toward the protective lens 15 to ensure that the mirror surface of the protective lens 15 is clean and the focusing light path is unobstructed.

[0057] Embodiment 9: Not shown in the drawings, this embodiment is a further improvement on the embodiment 1, and its specific method is: the rotation center lines of the outer mounting tube 1, the inner mounting tube 2, and the focusing mounting tube 4 are arranged to coincide with each other.

[0058] In this embodiment, the rotation center lines of the outer mounting tube 1, the inner mounting tube 2, and the focusing mounting tube 4 are arranged to coincide with each other, so that the three can be precisely assembled and a precise transmission channel can be provided for the focusing light path.

[0059] Embodiment 10: Although not shown in the drawings, this embodiment is a further improvement on the basis of embodiment 4, and its specific method is as follows: the center lines of the focusing lens 5 and the protective lens 15 are arranged to coincide with each other.

[0060] In this embodiment, the center lines of the focusing lens 5 and the protective lens 15 are arranged to coincide with each other, so that the focusing light path is vertical and has no deviation, thereby ensuring the accuracy of the laser position.

[0061] The automatic focusing structure designed in the utility model can control the air pressure by the air intake volume, and control the compression amount of the compression spring by the change of the air pressure, so as to control the up and down displacement of the focusing lens, realize automatic focusing, have high adjustment accuracy, convenient operation, and high operating efficiency, and can meet the laser requirements of products with different focal length requirements.

[0062] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An automatic focusing structure, characterized in that: include: External mounting cylinder (1); An inner mounting tube (2), wherein the inner mounting tube (2) is arranged on the inner side of the outer mounting tube (1); A compression spring (3), wherein the compression spring (3) is arranged between the outer mounting tube (1) and the inner mounting tube (2); A focusing mounting tube (4), wherein the focusing mounting tube (4) is arranged on the inner side of the inner mounting tube (2), and the focusing mounting tube (4) and the inner mounting tube (2) can be synchronously moved up and down relative to the outer mounting tube (1); A focusing lens (5), wherein the focusing lens (5) is horizontally fixed in the middle of the focusing mounting tube (4); An anti-collision base (6) is arranged below the outer mounting tube (1), a light-transmitting passage is provided in the middle of the anti-collision base (6) for allowing a focused light path to pass through, and a first air inlet (7) is provided in the anti-collision base (6).

2. The automatic focusing structure according to claim 1, characterized in that: An adapter seat (8) is arranged below the anti-collision base (6), a connecting sleeve (9) is arranged below the adapter seat (8), and a laser head (10) is arranged below the connecting sleeve (9).

3. The automatic focusing structure according to claim 1, characterized in that: The inner wall of the outer mounting tube (1) is provided with a first step (11); the outer wall of the inner mounting tube (2) is provided with a second step (12); the upper end of the compression spring (3) is arranged to abut against the first step (11), and the lower end of the compression spring (3) is arranged to abut against the second step (12); the outer wall of the focusing mounting tube (4) is provided with a third step (13), and the third step (13) is arranged to abut against the lower end of the inner mounting tube (2).

4. The automatic focusing structure according to claim 2, characterized in that: A light-transmitting hole (14) is provided in the middle of the anti-collision base (6), and a horizontal protective lens (15) is provided below the light-transmitting hole (14).

5. The automatic focusing structure according to claim 4, characterized in that: A lens mounting seat (16) is embedded at the lower end of the anti-collision base (6), and the protective lens (15) is arranged on the lens mounting seat (16).

6. The automatic focusing structure according to claim 5, characterized in that: A pressure cover (17) is arranged above the protective lens (15), and a spring pad (18) is arranged below the protective lens (15).

7. The automatic focusing structure according to claim 6, characterized in that: The adapter seat (8) is provided with a second air inlet (19).

8. The automatic focusing structure according to claim 7, characterized in that: An annular air sleeve (20) is arranged on the inner side of the adapter seat (8), an air duct (21) is arranged between the adapter seat (8) and the annular air sleeve (20), and the opening of the air duct (21) is arranged upward.

9. The automatic focusing structure according to claim 1, characterized in that: The rotation center lines of the outer mounting tube (1), the inner mounting tube (2) and the focusing mounting tube (4) are arranged to coincide with each other.

10. The automatic focusing structure according to claim 4, characterized in that: The center lines of the focusing lens (5) and the protective lens (15) are arranged to coincide with each other.

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