Auxiliary focusing structure of zoom lens

Abstract

The utility model discloses an auxiliary focusing structure of a zoom lens, and relates to the technical field of laser processing equipment. The focusing lens comprises a main focusing lens mounting part, an auxiliary focusing lens mounting part, a dimming cylinder and thermo-sensitive paper, the main focusing lens mounting part is provided with a limiting assembly, the bottom of the auxiliary focusing lens mounting part is provided with a first clamping block, the first clamping block is matched with the limiting assembly, and the main focusing lens mounting part and the auxiliary focusing lens mounting part are provided with connecting assemblies. According to the utility model, through the arrangement of the first clamping block and the limiting assembly, a worker can conveniently disassemble and assemble the focusing lens, the problem that fingerprints and dirt are attached to the focusing lens when the focusing lens is installed is avoided, through the arrangement of the pop-up assembly, the worker can conveniently disassemble the thermo-sensitive paper, and when the thermo-sensitive paper is installed, the work efficiency is improved. Under the action of the pop-up assembly, the position deviation of the thermo-sensitive paper can be avoided, so that the problem of inaccurate dimming caused by the deviation of the central position of the thermo-sensitive paper is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of laser processing equipment, and in particular relates to an auxiliary focusing structure of a variable-focus lens. Background Art

[0002] When the laser marking machine is working, the laser generated will pass through multiple components. After being focused by the focusing lens, it may deviate and affect the coaxiality of the optical path. Therefore, auxiliary tools are used to calibrate the optical path.

[0003] A Chinese patent with publication number CN212019749U discloses an auxiliary dimming structure of laser processing equipment, including a laser marking device, the laser marking device including a laser emitter and an auxiliary dimming structure, the auxiliary dimming structure including a focusing lens barrel, a dimming barrel and thermal paper; the dimming barrel is movably sleeved on the focusing lens barrel, and the thermal paper is arranged on the end surface of the dimming barrel away from the focusing lens barrel; the focusing lens barrel includes a first focusing lens mounting member, a second focusing lens mounting member and a plurality of connecting rods; the first focusing lens mounting member is provided with a first focusing lens; the second focusing lens mounting member is provided with a second focusing lens; the dimming barrel is a cylindrical structure, and the dimming barrel is provided with a accommodating cavity; the dimming barrel is provided with a circular recess; the thermal paper is provided with a circular area corresponding to the position of the circular recess and having the same size; the utility model has a simple structure, is easy to use and has strong practicality.

[0004] However, the above-mentioned comparative document is not convenient to remove the focusing lens when it is necessary to replace the focusing lens, and fingerprints and dirt are easily attached to the focusing lens when installing the focusing lens. Moreover, when installing the thermal paper, the thermal paper is easily wrinkled, causing the center position of the thermal paper to deviate, resulting in inaccurate dimming. Secondly, when disassembling the thermal paper, it is not convenient to disassemble the thermal paper because the dimming tube has a certain depth.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an auxiliary focusing structure of a variable-focus lens.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0008] An auxiliary focusing structure of a variable focus lens comprises a main focusing lens mounting member, a secondary focusing lens mounting member, a dimming cylinder and thermal paper, wherein a limit assembly is arranged on the main focusing lens mounting member, a first clamping block is arranged at the bottom of the secondary focusing lens mounting member, the first clamping block cooperates with the limit assembly, a connecting assembly is arranged on the main focusing lens mounting member and the secondary focusing lens mounting member, a fixing assembly is arranged on the dimming cylinder, the fixing assembly cooperates with the connecting assembly, a pop-up assembly is arranged in the dimming cylinder, the thermal paper is movably connected to the pop-up assembly, a focusing lens mounting groove is arranged on the inner wall of the main focusing lens mounting member and the secondary focusing lens mounting member, a center mark is arranged on the side of the thermal paper, and a circular through hole is arranged on one side of the dimming cylinder; a focusing lens is arranged in the focusing lens mounting groove;

[0009] The limiting assembly includes a first card slot opened on the top of the main focusing mirror mounting piece, a first sliding slot is opened on one side of the first card slot, a first limit block is slidably fitted in the first sliding slot, a first spring is installed between the first limit block and the first sliding slot, a first pull rod is installed on the side of the first limit block, one end of the first pull rod movably passes through the main focusing mirror mounting piece; a slope is provided at the bottom of the first card block, and a slope is provided at the top of the first limit block.

[0010] Optionally, the connecting component includes a connecting plate mounted on the main focusing mirror mounting member and the auxiliary focusing mirror mounting member, a fixing block is mounted on the side of the connecting plate, and the fixing block cooperates with the fixing component; a slope is provided on one side of the fixing block.

[0011] Optionally, the fixing component includes a second card slot opened on the side of the dimming cylinder, a second sliding slot is opened on one side of the second card slot, a second limit block is slidably fitted in the second sliding slot, a second spring is installed between the second limit block and the second sliding slot, a second pull rod is installed on one side of the second limit block, and one end of the second pull rod is movably inserted into the dimming cylinder; a slope is provided on one side of the second limit block.

[0012] Optionally, the pop-up component includes multiple circular grooves opened on the side of the inner cavity of the dimming cylinder, and fixed rods are installed in the multiple circular grooves. A square slider is movably connected to the side of the fixed rod, and a third spring is installed between the square slider and the circular groove. The thermal paper is movably connected to the fixed rod; a circular area corresponding to the position of the circular through hole and of the same size is provided in the center of the square slider.

[0013] Optionally, a plurality of connection holes are provided on the side of the thermal paper, and a protective ring is installed in the connection hole, and the inner side of the protective ring is movably connected to the fixed rod; there are four fixed rods and four protective rings, and the fixed rods correspond to the protective rings one by one.

[0014] Optionally, there are two groups of main focusing mirror mounting parts, which are connected by two main connecting rods, and there are two groups of auxiliary focusing mirror mounting parts, which are connected by two auxiliary connecting rods; the main connecting rods and the auxiliary connecting rods increase stability.

[0015] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below at the same time:

[0016] 1. The utility model provides the first clamping block and the limit assembly, which is conducive to making it more convenient for workers to disassemble and assemble the focusing lens, and avoids the problem of fingerprints and dirt adhering to the focusing lens when installing the focusing lens.

[0017] 2. The utility model provides a pop-up component, which makes it easy for workers to remove thermal paper. When installing thermal paper, the pop-up component can prevent the position of the thermal paper from deviating, thereby preventing the center position of the thermal paper from deviating, causing the problem of inaccurate dimming.

[0018] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0020] Figure 1 This is a schematic diagram of an auxiliary focusing explosion structure of an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the auxiliary focusing combination structure of an embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of a dimming tube according to an embodiment of the utility model;

[0023] Figure 4 This is a schematic cross-sectional structure diagram of a main focusing mirror mounting member according to an embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of the thermal paper structure of an embodiment of the utility model;

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Main focusing mirror mounting part; 2. Focusing mirror mounting groove; 3. First clamping groove; 4. First sliding groove; 5. First limit block; 6. First spring; 7. First pull rod; 8. Main connecting rod; 9. Secondary focusing mirror mounting part; 10. Secondary connecting rod; 11. First clamping block; 12. Connecting plate; 13. Fixed block; 14. Dimming cylinder; 15. Round groove; 16. Fixed rod; 17. Square slider; 18. Third spring; 19. Second clamping groove; 20. Second sliding groove; 21. Second limit block; 22. Second spring; 23. Second pull rod; 24. Round through hole; 25. Thermal paper; 26. Connecting hole; 27. Center mark.

[0027] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0028] The utility model will now be further described in detail with reference to the accompanying drawings.

[0029] See also Figure 1-5 As shown, in this embodiment, an auxiliary focusing structure of a variable focus lens is provided, including a main focusing lens mounting member 1, a secondary focusing lens mounting member 9, a dimming cylinder 14 and a thermal paper 25. A limit assembly is provided on the main focusing lens mounting member 1, a first clamping block 11 is provided at the bottom of the secondary focusing lens mounting member 9, and the first clamping block 11 cooperates with the limit assembly. A connecting assembly is provided on the main focusing lens mounting member 1 and the secondary focusing lens mounting member 9, a fixing assembly is provided on the dimming cylinder 14, and the fixing assembly cooperates with the connecting assembly. A pop-up assembly is provided in the dimming cylinder 14, and the thermal paper 25 is movably connected to the pop-up assembly. A focusing lens mounting groove 2 is provided on the inner wall of the main focusing lens mounting member 1 and the secondary focusing lens mounting member 9, a center mark 27 is provided on the side of the thermal paper 25, and a circular through hole 24 is provided on one side of the dimming cylinder 14; a focusing lens is provided in the focusing lens mounting groove 2;

[0030] The limiting assembly includes a first card slot 3 opened on the top of the main focusing mirror mounting member 1, a first sliding slot 4 is opened on one side of the first card slot 3, a first limiting block 5 is slidably fitted in the first sliding slot 4, a first spring 6 is installed between the first limiting block 5 and the first sliding slot 4, a first pull rod 7 is installed on the side of the first limiting block 5, and one end of the first pull rod 7 movably passes through the main focusing mirror mounting member 1; a slope is provided at the bottom of the first card block 11, and a slope is provided at the top of the first limiting block 5.

[0031] The application of one aspect of this embodiment is as follows: when the laser processing equipment is dimmed, the laser emitted by the laser transmitter is focused by the Z-axis focusing lens and then hits the center mark 27 of the thermal paper 25. A black dot is generated on the center mark 27 of the thermal paper 25. Check the position of the black dot. If the black dot is not on the center mark 27, repeatedly adjust the laser position to the center position. When the focusing lens needs to be removed, the first pull rod 7 is pulled, and the first pull rod 7 drives the first limit block 5 to squeeze the first spring 6, so that the first limit block 5 is located in the first sliding groove 4, and then the auxiliary focusing lens mounting member 9 can be easily removed. When the focusing lens needs to be installed, hold the edge of the focusing lens with your hand, and then place the focusing lens in the focusing lens mounting groove 2. By inserting the first card block 11 into the first card slot 3, the oblique The inclined surface of the first limit block 5 is squeezed by the surface, so that the first limit block 5 moves into the first sliding groove 4 until the first clamping block 11 is located below the first limit block 5, and then the first limit block 5 is reset under the action of the first spring 6, so that the first limit block 5 limits and fixes the first clamping block 11, which is conducive to making it more convenient for the staff to disassemble and assemble the focusing lens, and avoid the problem of fingerprints and dirt adhering to the focusing lens when installing the focusing lens. When the thermal paper 25 needs to be removed, the thermal paper 25 is ejected from the dimming cylinder 14 through the pop-up component, so that the staff can remove the thermal paper 25 conveniently. When installing the thermal paper 25, under the action of the pop-up component, the position of the thermal paper 25 can be avoided from deviating, thereby avoiding the deviation of the center position of the thermal paper 25 and causing the problem of inaccurate dimming.

[0032] See also Figure 1-4 As shown, the connection assembly of this embodiment includes a connection plate 12 mounted on the main focusing mirror mounting member 1 and the auxiliary focusing mirror mounting member 9, and a fixing block 13 is mounted on the side of the connection plate 12, and the fixing block 13 cooperates with the fixing assembly; one side of the fixing block 13 is provided with a slope.

[0033] See also Figure 1-4 As shown, the fixing assembly of the present embodiment includes a second card slot 19 provided on the side of the dimming cylinder 14, a second sliding slot 20 is provided on one side of the second card slot 19, a second limit block 21 is slidably fitted in the second sliding slot 20, a second spring 22 is installed between the second limit block 21 and the second sliding slot 20, a second pull rod 23 is installed on one side of the second limit block 21, and one end of the second pull rod 23 movably passes through the dimming cylinder 14; a slope is provided on one side of the second limit block 21.

[0034] By setting the fixing assembly and connecting assembly, when the dimming cylinder 14 needs to be installed, the fixing block 13 is inserted into the second slot 19, and the inclined surface of the fixing block 13 squeezes the inclined surface of the second limit block 21, so that the second limit block 21 moves into the second sliding slot 20 until the inclined surface of the fixing block 13 no longer contacts the inclined surface of the second limit block 21, and then the second limit block 21 is reset under the action of the second spring 22, so that the second limit block 21 limits and fixes the fixing block 13. When the dimming cylinder 14 needs to be removed, the second pull rod 23 is pulled, and the second pull rod 23 drives the second limit block 21 to squeeze the second spring 22, so that the second limit block 21 is located in the second sliding slot 20, and then the dimming cylinder 14 can be easily removed.

[0035] See also Figure 1-3 As shown, the pop-up assembly of this embodiment includes a plurality of circular grooves 15 opened on the side of the inner cavity of the dimming tube 14, and a fixing rod 16 is installed in each of the plurality of circular grooves 15. A square slider 17 is movably connected to the side of the fixing rod 16, and a third spring 18 is installed between the square slider 17 and the circular groove 15. The thermal paper 25 is movably connected to the fixing rod 16; a circular area corresponding to the position and having the same size as the circular through hole 24 is provided in the center of the square slider 17.

[0036] See also Figure 1-5 As shown, a plurality of connection holes 26 are provided on the side of the thermal paper 25 of the present embodiment, and a protective ring is installed in the connection hole 26, and the inner side of the protective ring is movably connected to the fixing rod 16; there are four fixing rods 16 and four protective rings, and the fixing rods 16 correspond to the protective rings one by one.

[0037] By setting up the pop-up assembly, when the thermal paper 25 needs to be installed, the protective ring of the thermal paper 25 is put on the fixing rod 16. Then, in the process of installing the dimming tube 14, the main focusing lens mounting member 1 and the auxiliary focusing lens mounting member 9 squeeze the thermal paper 25 and the square slider 17, so that the square slider 17 squeezes the third spring 18 and moves toward the circular through hole 24. When the dimming tube 14 is removed, the square slider 17 is driven by the third spring 18 to push the thermal paper 25, so that the thermal paper 25 is located at the opening of the dimming tube 14, which is convenient for the staff to take out the thermal paper 25.

[0038] See also Figure 1-4 As shown, in this embodiment, there are two groups of main focusing mirror mounting parts 1, and the two groups of main focusing mirror mounting parts 1 are connected by two main connecting rods 8. There are two groups of auxiliary focusing mirror mounting parts 9, and the two groups of auxiliary focusing mirror mounting parts 9 are connected by two auxiliary connecting rods 10; the main connecting rods 8 and the auxiliary connecting rods 10 increase stability.

[0039] The present invention is not limited to the above-mentioned implementation modes. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any technical solution that is the same or similar to the present invention falls within the protection scope of the present invention. The technology, shape, and structure that are not described in detail in the present invention are all known technologies.

Claims

1. An auxiliary focusing structure of a variable focus lens, characterized in that: include: A main focusing mirror mounting member (1), a secondary focusing mirror mounting member (9), a dimming cylinder (14) and a thermal paper (25); a limit assembly is arranged on the main focusing mirror mounting member (1); a first clamping block (11) is arranged at the bottom of the secondary focusing mirror mounting member (9); the first clamping block (11) cooperates with the limit assembly; a connecting assembly is arranged on the main focusing mirror mounting member (1) and the secondary focusing mirror mounting member (9); a fixing assembly is arranged on the dimming cylinder (14); the fixing assembly cooperates with the connecting assembly; a pop-up assembly is arranged in the dimming cylinder (14); the thermal paper (25) is movably connected to the pop-up assembly; the inner walls of the main focusing mirror mounting member (1) and the secondary focusing mirror mounting member (9) are both provided with a focusing mirror mounting groove (2); a center mark (27) is arranged on the side of the thermal paper (25); and a circular through hole (24) is arranged on one side of the dimming cylinder (14); The limiting assembly comprises a first slot (3) provided at the top of the main focusing mirror mounting member (1); a first sliding slot (4) is provided on one side of the first slot (3); a first limiting block (5) is slidably engaged in the first sliding slot (4); a first spring (6) is provided between the first limiting block (5) and the first sliding slot (4); a first pull rod (7) is provided on the side of the first limiting block (5); and one end of the first pull rod (7) movably passes through the main focusing mirror mounting member (1).

2. The auxiliary focusing structure of a variable focal length lens according to claim 1, characterized in that: The connecting assembly comprises a connecting plate (12) mounted on a main focusing mirror mounting member (1) and a secondary focusing mirror mounting member (9), a fixing block (13) being mounted on the side of the connecting plate (12), and the fixing block (13) being matched with the fixing assembly.

3. The auxiliary focusing structure of a variable focal length lens according to claim 2, characterized in that: The fixing assembly comprises a second slot (19) provided on the side of the dimming cylinder (14); a second sliding slot (20) is provided on one side of the second slot (19); a second limit block (21) is slidably fitted in the second sliding slot (20); a second spring (22) is installed between the second limit block (21) and the second sliding slot (20); a second pull rod (23) is installed on one side of the second limit block (21); and one end of the second pull rod (23) movably passes through the dimming cylinder (14).

4. The auxiliary focusing structure of a variable focal lens according to claim 1, characterized in that: The pop-up assembly comprises a plurality of circular grooves (15) provided on the inner side of the dimming cylinder (14), a fixing rod (16) is installed in each of the plurality of circular grooves (15), a square slider (17) is movably connected to the side of the fixing rod (16), a third spring (18) is installed between the square slider (17) and the circular groove (15), and a thermal paper (25) is movably connected to the fixing rod (16).

5. The auxiliary focusing structure of a variable focal length lens according to claim 4, characterized in that: A plurality of connection holes (26) are provided on the side of the thermal paper (25), and a protection ring is installed in the connection hole (26). The inner side of the protection ring is movably connected to the fixing rod (16).

6. The auxiliary focusing structure of a variable focal length lens according to claim 1, characterized in that: There are two groups of main focusing mirror mounting parts (1), which are connected via two main connecting rods (8); there are two groups of auxiliary focusing mirror mounting parts (9), which are connected via two auxiliary connecting rods (10).

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