Protection module for laser collimation module

Abstract

The utility model discloses a protection module for a laser collimation module, which comprises a base and a lens seat, an open slot for the lens seat to insert is arranged on the right side of the base, a first stepped hole which is through up and down is arranged in the lens seat, and a second stepped hole which is through up and down is arranged in the base. A pressing ring capable of pressing the protection lens on the step of the first stepped hole from top to bottom is mounted on the first stepped hole, and the pressing ring is arranged on the lens base through a first mounting structure; a clamping assembly capable of clamping the mirror base and the pressing ring from the upper end and the lower end is arranged on the second stepped hole, a locking adjusting assembly capable of clamping the mirror base from the front side and the rear side is further arranged in the base, and a fixing assembly capable of being inserted into the open groove and fixing the mirror base after the position of the mirror base is adjusted is arranged on the mirror base. The protective lens is pressed on the lens base through the pressing ring, and the pressing ring is fixed up and down through the clamping assembly, so that the protective lens and the pressing ring are convenient to disassemble, and the situation that the protective lens is damaged due to abrasion and dust falling can be effectively prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser welding or cutting, and particularly relates to a protection module for a laser collimation module. Background Art

[0002] The fiber laser generator is used as a light source in both laser cutting and laser welding. During its use, the fiber optic head needs to be plugged and unplugged. When plugging and unplugging the fiber optic head, dust and other dirt may enter the module interior and fall onto the lens. After the light exits, the dirt attached to the lens will burn the lens. Therefore, adding a protection module between the fiber optic plug and the collimating lens can effectively extend the service life of the collimation module.

[0003] In the prior art, the protection module usually uses a threaded retaining ring to tighten the lens. During the process of repeatedly replacing the protection lens, the friction of the screw teeth will cause metal chips to fall off and contaminate the lens, shortening the service life of the protection lens. Summary of the Utility Model

[0004] The utility model intends to propose a protection module for a laser collimation module, which is not only convenient for the quick disassembly and assembly of the protection module, but also has no risk of wear and dust falling, and can effectively prevent the protection lens from being contaminated.

[0005] For this reason, the technical solution adopted by the utility model is as follows: a protection module for a laser collimation module, including a base and a lens holder. An open slot for inserting the lens holder is provided on the right side of the base. A first stepped hole that penetrates up and down and is used for installing a protection lens is provided in the lens holder. A second stepped hole that penetrates up and down and is used for passing the optical fiber is provided in the base. A retaining ring that can press-fit the protection lens onto the step of the first stepped hole from top to bottom is installed on the first stepped hole, and a through hole for the optical fiber is provided on the retaining ring. The retaining ring is arranged on the lens holder through a first installation structure; a clamping assembly that can clamp the lens holder and the retaining ring from both upper and lower ends is equipped on the second stepped hole, a locking and adjusting assembly that can clamp the lens holder from the front and rear sides is also equipped in the base, and a fixing assembly that can be inserted into the open slot and fixed after the lens holder is adjusted to the correct position is equipped on the lens holder.

[0006] As a preference in the above solution, the first installation structure includes at least two first elastic members arranged in the lens holder. When the retaining ring is inserted into the first stepped hole from top to bottom, the first elastic members can be compressed, so that the retaining ring just snaps into the first stepped hole and presses on the protection lens.

[0007] Further preferably, an installation groove that is convenient for installing the retaining ring and communicates with the first stepped hole is provided on the lens holder, and two installation grooves are symmetrically arranged in the front and rear.

[0008] Further preferably, a first sealing ring for preventing the pressing ring from directly contacting the protective lens is provided on the lower end surface of the pressing ring.

[0009] Further preferably, the fixing assembly includes a baffle provided on the right side of the lens holder, and an anti-falling bolt that can be tightened in the mounting hole on the right side surface of the base is provided on the baffle, and a positioning pin that can be inserted into the positioning hole on the right side surface of the base is further provided on the baffle.

[0010] Further preferably, a second sealing ring for preventing impurities from entering the opening groove is provided on the left side of the baffle.

[0011] Further preferably, the clamping assembly includes a top cover and a protection pad that are arranged at intervals up and down in the second stepped hole. A top cover through hole for the optical fiber to pass through is provided in the top cover, and a protection pad through hole for the optical fiber to pass through is provided in the protection pad. A fixing flange for fixing the top cover in the second stepped hole is provided at the upper end of the top cover, and the lower end of the top cover can not only press on the lens holder but also press on the pressing ring. The protection pad is snap-fitted onto the step in the second stepped hole from top to bottom, and a plurality of second elastic members that can abut against the step of the second stepped hole are provided at the lower end of the protection pad.

[0012] Further preferably, a first inclined surface for pushing the protection pad to move towards the elastic member when the lens holder is inserted is provided on the outer side of the upper end of the protection pad, and a second inclined surface for facilitating the insertion of the lens holder into the opening groove is provided on the outer side of the lower end of the lens holder.

[0013] Further preferably, a protection ring for preventing the protection pad from hard contact with the second stepped hole is provided on the circumferential outer side of the protection pad.

[0014] Further preferably, the locking and adjusting assembly includes two third elastic members and two adjusting screws that are arranged opposite to each other front and back in the base. Both the third elastic member and the adjusting screw can contact the lens holder. When the lens holder is inserted into the opening groove, the third elastic member can be compressed, so that the front and back sides of the lens holder are clamped by the third elastic member.

[0015] The beneficial effects of the present utility model: The protective lens is pressed on the lens holder by the pressing ring, and the pressing ring is fixed up and down through the clamping assembly, which is not only convenient for the disassembly of the protective lens and the pressing ring, but also does not require special tools during the disassembly process of the protective lens, thereby effectively preventing the damage of the protective lens due to wear and dust. Description of the Drawings

[0016] Figure 1 is a perspective view of the present utility model.

[0017] Figure 2 is a schematic view of the present utility model.

[0018] Figure 3This is a three-dimensional installation view of the lens holder in the present utility model.

[0019] Figure 4 This is a schematic installation view of the lens holder in the present utility model.

[0020] Figure 5 This is a three-dimensional installation view of the base in the present utility model.

[0021] Figure 6 This is a schematic installation view of the base in the present utility model.

[0022] Reference numerals: base - 1, opening groove - 1a, second stepped hole - 1b, mounting hole - 1c, positioning hole - 1d, lens holder - 2, first stepped hole - 2a, mounting groove - 2b, second inclined surface - 2c, protective lens - 3, pressure ring - 4, pressure ring through hole - 4a, first elastic member - 5, first sealing ring - 6, baffle - 7, anti - dropping bolt - 8, positioning pin - 9, second sealing ring - 10, top cover - 11, top cover through hole - 11a, fixed flange - 11b, protective pad - 12, protective pad through hole - 12a, first inclined surface - 12b, second elastic member - 13, protective ring - 14, third elastic member - 15, adjusting screw - 16. Detailed implementation manners

[0023] The present utility model will be further described below through embodiments in conjunction with the accompanying drawings:

[0024] As Figures 1-6 shown, a protection module for a laser collimation module mainly consists of a base 1, a lens holder 2, a protective lens 3, a pressure ring 4, a first mounting structure, a clamping assembly, a locking and adjusting assembly, and a fixing assembly. To realize the installation of the lens holder, an opening groove 1a for inserting the lens holder 2 is provided on the right side of the base 1. At the same time, a second stepped hole 1b that penetrates up and down and is used for the fiber to pass through is provided in the base 1, and the opening groove 1a is communicated with the second stepped hole 1b.

[0025] To realize the installation of the protective lens, a first stepped hole 2a that penetrates up and down and is used for installing the protective lens 3 is provided in the lens holder 2. A pressure ring 4 that can press - fit the protective lens onto the step of the first stepped hole from top to bottom is installed on the first stepped hole 2a, and a pressure ring through hole 4a for the fiber to pass through is provided on the pressure ring 4.

[0026] To fix the pressing ring, the pressing ring 4 is arranged on the lens holder 2 through a first mounting structure. The first mounting structure includes at least two first elastic members 5 arranged in the lens holder 2. When the pressing ring 4 is snapped into the first stepped hole 2a from top to bottom, the first elastic members 5 can be compressed, so that the pressing ring 4 is just snapped into the first stepped hole 2a and presses on the protective lens 3, that is, the restriction on the four sides of the pressing ring is realized through the cooperation of the first elastic member and the first stepped hole. Preferably, the pressing ring is provided with an annular groove that is recessed inward and convenient for the elastic member to extend into at a circle corresponding to the position where the first elastic member is pressed.

[0027] To facilitate the disassembly of the pressing ring, the lens holder 2 is provided with mounting grooves 2b that are convenient for the installation of the pressing ring 4 and communicate with the first stepped hole 2a, and two mounting grooves 2b are symmetrically arranged front and back. To prevent the pressing ring from directly pressing on the protective lens when it is placed, a first sealing ring 6 is provided on the lower end surface of the pressing ring 4 to prevent the pressing ring 4 from directly contacting the protective lens 3. The first sealing ring 6 not only has a buffering effect but also ensures that when there are manufacturing errors in the protective lens, the protective lens can be pressed tightly between the pressing ring and the step of the first stepped hole.

[0028] Preferably, the first stepped hole is provided with two steps that decrease from top to bottom. The protective lens is pressed tightly at the position of the lower step, and the pressing ring can abut against the position of the upper step. At the same time, to facilitate the disassembly of the protective lens, the distance between the two steps is lower than the thickness of the protective lens, and the mounting groove extends downward to the position of the upper step.

[0029] To realize the fixed installation of the lens holder, a clamping assembly is equipped on the second stepped hole 1b to clamp the lens holder and the pressing ring from the upper and lower ends, so that it can not only limit the up and down positions of the lens holder but also limit the up and down positions of the pressing ring. A locking and adjusting assembly is also equipped in the base 1 to clamp the lens holder 2 from the front and back sides, and a fixing assembly is equipped on the lens holder 2 that can be inserted into the opening groove 1a and fixed after adjusting the position.

[0030] The clamping assembly includes a top cover 11 and a protective pad 12 that are arranged at intervals up and down in the second stepped hole 1b. A top cover through hole 11a for the optical fiber to pass through is arranged in the top cover 11, and a protective pad through hole 12a for the optical fiber to pass through is arranged in the protective pad 12. To realize the installation of the top cover, a fixing flange 11b for fixing the top cover in the second stepped hole is arranged at the upper end of the top cover 11, and the lower end of the top cover 11 can not only press on the lens holder 2 but also press on the pressing ring 4, that is, the lower end of the top cover matches the lens holder after the pressing ring is installed. Preferably, the pressing ring is flush with the lens holder after installation.

[0031] The protective pad 12 is snap-fitted onto the step inside the second stepped hole 1b from top to bottom, that is, the outer diameter of the protective pad matches the inner diameter of the second stepped hole. At the same time, several second elastic members 13 are provided at the lower end of the protective pad 12, and the second elastic members are evenly arranged circumferentially. After the lens holder is inserted along the opening groove, it can be clamped between the top cover and the protective pad under the action of the second elastic members.

[0032] Preferably, a first inclined surface 12b for pushing the protective pad to move towards the elastic member when the lens holder 2 is inserted is provided on the outer side of the upper end of the protective pad 12, and a second inclined surface 2c for facilitating the insertion of the lens holder 2 into the opening groove 1a is provided on the outer side of the lower end of the lens holder 2. Correspondingly, inclined surfaces can also be provided on the outer side of the lower end of the top cover and the outer side of the upper end of the lens holder.

[0033] Preferably, a protective ring 14 for preventing the hard contact between the protective pad 12 and the second stepped hole 1b is provided on the circumferential outer side of the protective pad 12. The top cover is fixedly installed, with the lower end of the top cover as a reference to prevent the lens holder from being uneven due to manufacturing errors. The protective pad and the top cover clamp the lens holder together under the action of the second elastic members, so as to effectively ensure that the lens holder is in a horizontal state when installed.

[0034] The locking and adjusting assembly includes two third elastic members 15 and two adjusting screws 16 arranged opposite to each other front and back inside the base, and both the third elastic members 15 and the adjusting screws 16 can contact the lens holder 2. When the lens holder 2 is inserted into the opening groove 1a, the third elastic members 15 can be compressed, clamping the front and back sides of the lens holder 2. Then, by adjusting the adjusting screws, the front and back positions of the lens holder can be adjusted.

[0035] The fixing assembly includes a baffle 7 provided on the right side of the lens holder 2. At the same time, an anti-falling bolt 8 that can be tightened into the mounting hole 1c on the right side surface of the base is provided on the baffle 7, and a positioning pin 9 that can be inserted into the positioning hole 1d on the right side surface of the base is also provided on the baffle 7, so as to effectively ensure the position of the lens for protecting the lens in the lens holder. To ensure sealing, a second sealing ring 10 for preventing impurities from entering the opening groove 1a is provided on the left side of the baffle 7.

[0036] For the convenience of subsequent maintenance, the first elastic member, the second elastic member, and the third elastic member all adopt ball head plungers, and the anti-falling bolt adopts a straight thread hand-tightening screw.

Claims

1. A protection module for a laser collimation module, comprising a base (1) and a lens seat (2), wherein an opening groove (1a) is provided on the right side of the base (1) for inserting the lens seat (2), a first stepped hole (2a) is provided in the lens seat (2) and is used to install a protection lens (3), and a second stepped hole (1b) is provided in the base (1) and is used to pass an optical fiber, wherein: The first stepped hole (2a) is provided with a pressing ring (4) capable of pressing the protective lens onto the step of the first stepped hole from top to bottom, and the pressing ring (4) is provided with a pressing ring through hole (4a) for the optical fiber to pass through, the pressing ring (4) is provided on the mirror base (2) via a first mounting structure, the second stepped hole (1b) is provided with a clamping assembly capable of clamping the mirror base and the pressing ring from both ends, the base (1) is further provided with a locking adjustment assembly capable of clamping the mirror base (2) from the front and rear sides, and the mirror base (2) is provided with a fixing assembly capable of being inserted into the opening groove (1a) and fixing the mirror base after the position of the mirror base is adjusted.

2. The protection module for the laser alignment module according to claim 1, characterized in that: The first mounting structure comprises at least two first elastic members (5) arranged in the lens seat (2); when the pressure ring (4) is inserted into the first stepped hole (2a) from top to bottom, the first elastic member (5) can be compressed so that the pressure ring (4) is just inserted into the first stepped hole (2a) and pressed onto the protective lens (3).

3. The protection module for the laser alignment module according to claim 1, characterized in that: The mirror seat (2) is provided with a mounting groove (2b) which is convenient for mounting the pressure ring (4) and is connected to the first stepped hole (2a), and two mounting grooves (2b) are symmetrically arranged front and back.

4. The protection module for the laser alignment module according to claim 1, characterized in that: A first sealing ring (6) is provided on the lower end surface of the pressure ring (4) and is used to prevent the pressure ring (4) from directly contacting the protective lens (3).

5. The protection module for the laser alignment module according to claim 1, characterized in that: The fixing assembly comprises a baffle (7) arranged on the right side of the mirror base (2), the baffle (7) being provided with an anti-drop bolt (8) capable of being screwed into a mounting hole (1c) on the right side of the base, and the baffle (7) being further provided with a positioning pin (9) capable of being inserted into a positioning hole (1d) on the right side of the base.

6. The protection module for the laser alignment module according to claim 5, characterized in that: A second sealing ring (10) is provided on the left side of the baffle (7) for preventing impurities from entering the opening groove (1a).

7. The protection module for the laser alignment module according to claim 1, characterized in that: The clamping assembly comprises a top cover (11) and a protective pad (12) which are arranged in a second stepped hole (1b) at an interval from top to bottom. The top cover (11) is provided with a top cover through hole (11a) for the optical fiber to pass through, and the protective pad (12) is provided with a protective pad through hole (12a) for the optical fiber to pass through. The upper end of the top cover (11) is provided with a fixing flange (11b) for fixing the top cover in the second stepped hole, and the lower end of the top cover (11) can be pressed not only on the mirror seat (2) but also on the pressing ring (4). The protective pad (12) is clamped from top to bottom on the step in the second stepped hole (1b), and the lower end of the protective pad (12) is provided with a plurality of second elastic members (13) which can abut against the step of the second stepped hole (1b).

8. The protection module for the laser alignment module according to claim 7, characterized in that: The outer side of the upper end of the protection pad (12) is provided with a first inclined surface (12b) for pushing the protection pad to move towards the elastic member when the mirror base (2) is inserted, and the outer side of the lower end of the mirror base (2) is provided with a second inclined surface (2c) for facilitating the insertion of the mirror base (2) into the opening groove (1a).

9. The protection module for the laser alignment module according to claim 7, characterized in that: A protective ring (14) is provided on the circumferential outer side of the protective pad (12) to prevent the protective pad (12) from making hard contact with the second stepped hole (1b).

10. The protection module for the laser alignment module according to claim 1, characterized in that: The locking adjustment assembly comprises two third elastic members (15) and two adjustment screws (16) which are arranged in a front and rear relative manner in the base, wherein the third elastic member (15) and the adjustment screws (16) can both contact the mirror base (2), and when the mirror base (2) is inserted into the opening groove (1a), the third elastic member (15) can be compressed, so that the front and rear sides of the mirror base (2) are clamped by the third elastic member (15).

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