Focusing center adjusting mechanism and laser cutting head

Abstract

The utility model belongs to the technical field of laser cutting, and discloses a focusing center adjusting mechanism and a laser cutting head, which comprise a seat body, an adjusting component and a propping component, the base body is provided with a through hole which can be used for placing the focus lens base. The two adjusting assemblies are located on one side of the center of the through hole. The two abutting assemblies are located on the other side of the center of the through hole. The two adjusting assemblies and the two abutting assemblies are arranged diagonally, the adjusting assemblies can push the focus lens base to move towards the abutting assemblies opposite to the adjusting assemblies diagonally, and the abutting assemblies can enable the focus lens base to keep the tendency of the original position. According to the laser cutting head, the focusing center adjusting mechanism is utilized, the adjusting assembly and the abutting assembly are used for replacing a spring hoop mode, installation is more convenient, the focusing lens base can move in the diagonal direction by adjusting the adjusting assembly, the focusing lens base can move in two directions at a time, adjustment is easier and more convenient, and the adjusting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting, in particular to a focusing center adjustment mechanism and a laser cutting head. Background Art

[0002] Fiber laser cutting machine is a laser cutting machine that uses fiber laser generator as light source. Fiber laser is a new type of laser that can output high energy density laser beam. The output laser beam can be focused on the surface of the workpiece, so that the area on the workpiece irradiated by the ultra-fine focal spot is instantly melted and gasified for cutting.

[0003] The cutting head is an important component of the fiber laser cutting machine, and the focusing mirror assembly is an important component of the cutting head. The focusing mirror is installed on the mirror seat, and the mirror seat is set on the focusing centering mechanism, so that the center of the focusing mirror is adjusted by the focusing centering mechanism. In the prior art, the focusing centering mechanism generally focuses the mirror seat through a spring clamp, and then adjusts the focus of the focusing mirror through a tension spring. The above structure is cumbersome to install, easy to cause damage, and has poor adjustment efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a focusing center adjustment mechanism and a laser cutting head, wherein the mounting seat can be installed on the focusing center adjustment mechanism more conveniently, thereby further improving the adjustment efficiency.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Focus centering mechanism, including:

[0007] A seat body, wherein the seat body has a through hole, and the through hole can accommodate a focusing lens seat;

[0008] An adjustment component, wherein two groups of the adjustment components are provided, and the two groups of the adjustment components are located on one side of the center of the through hole;

[0009] Abutting components, wherein two groups of the abutting components are provided, and the two groups of the abutting components are located on the other side of the center of the through hole;

[0010] The two groups of adjustment components and the two groups of abutment components are respectively arranged diagonally, and the adjustment components can push the focusing lens seat to move toward the abutment components diagonally opposite thereto, and the abutment components can keep the focusing lens seat in its original position, so that the focusing lens seat can be kept in a preset position under the action of the adjustment components and the abutment components.

[0011] Preferably, the adjustment assembly comprises an abutting rod, the abutting rod comprises a rotating end and an abutting top end, the rotating end is rotatably connected to the base body, and the abutting top end can be close to or away from the focusing lens base.

[0012] Preferably, a transfer seat is provided in the through hole, and the two push rods are symmetrically rotated on the transfer seat.

[0013] Preferably, the adjustment assembly also includes a pushing member, a first through hole is provided on the base body, the first through hole passes through the base body and is connected with the through hole, the pushing member abuts against a side of the abutting top facing away from the focusing lens seat through the through hole, and the pushing member and the first through hole can be locked to keep the pushing member in a preset position.

[0014] Preferably, the abutting assembly comprises an elastic member, a first end of the elastic member abuts against the focusing lens seat, and a second end of the elastic member is limited to the seat body.

[0015] Preferably, the seat body is provided with a second through hole, the second through hole penetrates the seat body and is connected with the through hole, a limiting block is detachably provided on the seat body to block one end of the second through hole away from the through hole, and the second end of the elastic member is connected to the limiting block through the second through hole.

[0016] Preferably, the abutting assembly further comprises a abutting member, the abutting member slides in the second through hole, an embedding hole is provided on a side of the abutting member away from the focusing lens seat, and the elastic member is embedded in the embedding hole.

[0017] A laser cutting head comprises a shell and the focusing and centering mechanism as described above, wherein the shell is provided with a light inlet and a light outlet, and the shell is provided with a first plug interface, wherein the first plug interface is located between the light inlet and the light outlet, and the base of the focusing and centering mechanism is plugged into the shell through the first plug interface.

[0018] Preferably, a stray light monitoring component is further provided in the housing, and the stray light monitoring component is located in the housing and above the focusing center adjustment mechanism.

[0019] Preferably, it further comprises a collimating lens seat, on which a collimating lens is mounted, and a second plug interface is provided on the shell, through which the collimating lens seat is plugged into the shell.

[0020] Beneficial effects of the utility model:

[0021] The spring clamp in the prior art is replaced by an adjusting assembly and a resisting assembly, thereby making installation more convenient. The focusing lens seat only needs to be placed between the resisting assembly and the adjusting assembly so that the two clamp the focusing lens seat. When adjustment is required, it is only necessary to adjust the adjusting assembly so that the focusing lens seat can be pushed to move toward the resisting assembly diagonally opposite to it, thereby making the focusing lens seat move in the diagonal direction, so that it can move in two directions at one time, thereby making the adjustment method simpler and improving the adjustment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the focusing lens seat in the utility model being installed on the focusing center adjustment mechanism;

[0023] Figure 2 It is a schematic diagram of the focusing center adjustment mechanism in the utility model;

[0024] Figure 3 It is a top view of the focusing center adjustment mechanism of the utility model;

[0025] Figure 4 yes Figure 3 Sectional view along the AA direction;

[0026] Figure 5 is a schematic diagram of a laser cutting head;

[0027] Figure 6 This is a cross-sectional view of the laser cutting head.

[0028] In the figure:

[0029] 10. Focus on the central adjustment mechanism;

[0030] 1. Seat body; 11. Through hole; 12. Adapter seat;

[0031] 2. Adjustment assembly; 21. Push rod; 22. Pushing member;

[0032] 3. abutting assembly; 31. elastic member; 32. limiting block; 33. abutting member;

[0033] 4. Focusing lens holder;

[0034] 100. Shell; 101. Light inlet; 102. Light outlet; 103. Collimating lens seat; 104. Protective lens seat; 105. Stray light monitoring component. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of this embodiment, the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0039] like Figures 1 to 4As shown, the utility model provides a focusing center adjustment mechanism, which includes a base 1, an adjustment component 2 and a resisting component 3; the base 1 has a through hole 11, and the through hole 11 can accommodate a focusing lens base 4; two groups of adjustment components 2 are provided, and the two groups of adjustment components 2 are located on one side of the center of the through hole 11; two groups of resisting components 3 are provided, and the two groups of resisting components 3 are located on the other side of the center of the through hole 11; the two groups of adjustment components 2 and the two groups of resisting components 3 are respectively arranged diagonally, and the adjustment component 2 can push the focusing lens base 4 to move toward the resisting component 3 diagonally opposite to it, and the resisting component 3 can make the focusing lens base 4 maintain its original position, so that the focusing lens base 4 can be kept in a preset position under the action of the adjustment component 2 and the resisting component 3.

[0040] The spring clamp in the prior art is replaced by the adjusting component 2 and the resisting component 3, so that the installation is more convenient. It is only necessary to place the focusing lens seat 4 between the resisting component 3 and the adjusting component 2 so that the two can clamp the focusing lens seat 4. When adjustment is required, it is only necessary to adjust the adjusting component 2 to push the focusing lens seat 4 to move toward the resisting component 3 diagonally opposite to it, that is, the focusing lens seat 4 can be moved in the diagonal direction, so that it can move in two directions at one time, thereby making the adjustment method simpler and improving the adjustment efficiency.

[0041] In some embodiments, the adjustment assembly 2 includes a push rod 21, and the push rod 21 includes a rotating end and a push top end. The rotating end of the push rod 21 is rotatably connected to the base body 1, and the push top end can rotate around the rotating end, so that the push top end can be close to or away from the focusing lens seat 4, thereby pushing the focusing lens seat 4 to move toward the push assembly 3 diagonally opposite thereto. Specifically, an adapter seat 12 is provided in the through hole 11, and the two push rods 21 are symmetrically rotatably connected to the adapter seat 12 through an adapter axis provided on the adapter seat 12. Furthermore, in order to save space and reduce the rotation distance of the push top end, the distance between the push top end and the center of the through hole 11 is smaller than the distance between the rotating end and the center of the through hole 11. That is, the angle between the push top end and the rotating end is set.

[0042] In some embodiments, in order to facilitate the movement of the top end of the push rod 21, the adjustment assembly 2 also includes a pusher 22, and the seat body 1 is provided with a first through hole, the first through hole penetrates the seat body 1 and is connected with the through hole 11, and the pusher 22 passes through the through hole 11 to push the top end away from the side of the focusing lens seat 4, so that the pusher 33 can be pushed on the outside of the seat body 1 to indirectly push the push rod 21; in addition, the pusher 22 and the first through hole can be locked, so that the pusher 22 maintains the preset position after being adjusted into place. Exemplarily, the first through hole is a screw hole, and the pusher 22 is a ball screw, which is a prior art and will not be described in detail. In other embodiments, the pusher 22 also uses a bolt.

[0043] In some embodiments, the abutting assembly 3 includes an elastic member 31, the first end of the elastic member 31 abuts against the focusing lens seat 4, and the second end of the elastic member 31 is limited to the seat body 1, so that when the pusher 22 pushes the focusing lens seat 4, the elastic member 31 is squeezed, so that the elastic member 31 has a tendency to remain in place through the restoring force of the elastic member 31, so that the two together stabilize the focusing lens seat 4. Specifically, a second through hole is provided on the seat body 1, and the second through hole passes through the seat body 1 and is connected to the through hole 11. A limiting block 32 is detachably provided on the seat body 1, so that the limiting block 32 blocks one end of the second through hole away from the through hole 11, and the second end of the elastic member 31 is connected to the limiting block 32 through the second through hole, so that the installation of the elastic member 31 is facilitated by removing the limiting block 32. In the current embodiment, the elastic member 31 adopts a compression spring, and in other embodiments, the elastic member 31 can also adopt an elastic rubber member. Exemplarily, the limiting block 32 can be, but is not limited to, detachably fixed to the seat body 1 by bolts. Furthermore, in order to ensure the stability of the abutting assembly 3 abutting the focusing lens seat 4, the abutting assembly 3 also includes a abutting piece 33, which is slidably connected in the second through hole, and an inlay hole is provided on the side of the abutting piece 33 away from the focusing lens seat 4, and the elastic piece 31 is embedded in the inlay hole. On the one hand, the abutting piece 33 can avoid direct contact between the elastic piece 31 and the focusing lens seat 4, thereby improving the contact stability; on the other hand, the abutting piece 33 is provided with an inlay hole, and the elastic piece 31 is compressed in the inlay hole, thereby improving the compression stability of the elastic piece 31. Exemplarily, the abutting piece 33 can be, but is not limited to, a ball-shaped top block, which is a prior art and will not be described in detail. It should be noted here that the use of a ball-shaped top block can also make the movement smoother by utilizing the round end of the ball-shaped top block to contact when the focusing lens seat 4 is adjusted and moved.

[0044] like Figure 5 and Figure 6As shown, the utility model also provides a laser cutting head, which includes a housing 100, on which a light inlet 101 and a light outlet 102 are provided, and which also includes the above-mentioned focusing center adjustment mechanism 10, and the housing 100 is provided with a first plug interface, and the first plug interface is located between the light inlet 101 and the light outlet 102, and the seat 1 of the focusing center adjustment mechanism 10 is plugged into the housing 100 through the first plug interface, so that the light entering from the light inlet 101 passes through the focusing center adjustment mechanism 10 and then is emitted from the light outlet 102. In order to ensure the stability of the plug-in, a fixing hole is also provided on the seat 1 of the focusing center adjustment mechanism 10, and a connecting screw hole is provided on the housing 100, and the focusing center adjustment mechanism 10 can be stably connected to the housing 100 by passing a bolt through the fixing hole and connecting to the connecting screw hole. In addition, it is understandable that the laser cutting head also includes a collimator lens holder 103, the collimator lens holder 103 is provided with a collimator lens, the housing 100 is provided with a second plug interface, and the collimator lens holder 103 is plugged into the housing 100 through the second plug interface, so as to facilitate disassembly and replacement. Of course, it is understandable that the laser cutting head can also include a protective lens holder 104, and the protective lens holder 104 can be installed in the same manner as the collimator lens holder 103 and the focusing center adjustment mechanism 10, and no specific details are given here.

[0045] Furthermore, a stray light monitoring component 105 is also provided in the housing 100. The stray light monitoring component 105 is located in the housing 100 and above the focus center adjustment mechanism 10, so as to monitor the stray light value, so that an alarm can be issued when it exceeds a preset value to ensure the system transmission rate. Exemplarily, the stray light monitoring component 105 adopts a monitoring PCBA; it is understandable that the number of stray light monitoring components 105 can be multiple.

[0046] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Focus center adjustment mechanism, characterized in that: include: A base body (1), the base body (1) having a through hole (11), and the through hole (11) can accommodate a focusing lens base (4); An adjustment component (2), wherein two groups of the adjustment components (2) are provided, and the two groups of the adjustment components (2) are located on one side of the center of the through hole (11); Abutment components (3), wherein two groups of the abutment components (3) are provided, and the two groups of the abutment components (3) are located on the other side of the center of the through hole (11); The two groups of adjustment components (2) and the two groups of abutment components (3) are respectively arranged diagonally, and the adjustment components (2) can push the focusing lens seat (4) to move towards the abutment components (3) diagonally opposite thereto, and the abutment components (3) can keep the focusing lens seat (4) in the original position, so that the focusing lens seat (4) can be kept in a preset position under the action of the adjustment components (2) and the abutment components (3).

2. The focusing center adjustment mechanism according to claim 1, characterized in that: The adjustment assembly (2) comprises a push rod (21), the push rod (21) comprises a rotating end and a push top end, the rotating end is rotatably connected to the base (1), and the push top end can approach or move away from the focusing lens base (4).

3. The focusing center adjustment mechanism according to claim 2, characterized in that: A transfer seat (12) is arranged in the through hole (11), and the two push rods (21) are symmetrically transferred to the transfer seat (12).

4. The focusing center adjustment mechanism according to claim 2, characterized in that: The adjustment assembly (2) further comprises a pushing member (22), the base body (1) being provided with a first through hole, the first through hole penetrating the base body (1) and being connected with the through hole (11), the pushing member (22) abutting against a side of the abutting top facing away from the focusing lens base (4) through the through hole (11), the pushing member (22) and the first through hole being lockable so that the pushing member (22) maintains a preset position.

5. The focusing center adjustment mechanism according to claim 1, characterized in that: The abutting assembly (3) comprises an elastic member (31), a first end of the elastic member (31) abuts against the focusing lens seat (4), and a second end of the elastic member (31) is limited to the seat body (1).

6. The focusing center adjustment mechanism according to claim 5, characterized in that: The seat body (1) is provided with a second through hole, the second through hole passes through the seat body (1) and is connected with the through hole (11), and the seat body (1) is detachably provided with a limiting block (32) to block an end of the second through hole away from the through hole (11), and the second end of the elastic member (31) is connected to the limiting block (32) through the second through hole.

7. The focusing center adjustment mechanism according to claim 6, characterized in that: The abutting assembly (3) further comprises a abutting piece (33), the abutting piece (33) being slidably connected to the second through hole, an embedding hole being provided on a side of the abutting piece (33) facing away from the focusing lens seat (4), and the elastic piece (31) being embedded in the embedding hole.

8. A laser cutting head, comprising a housing (100), wherein the housing (100) is provided with a light inlet (101) and a light outlet (102), characterized in that: It also includes a focusing and centering mechanism (10) as described in any one of claims 1 to 7, the shell (100) is provided with a first plug interface, the first plug interface is located between the light inlet (101) and the light outlet (102), and the base (1) of the focusing and centering mechanism (10) is plugged into the shell (100) through the first plug interface.

9. The laser cutting head according to claim 8, characterized in that: A stray light monitoring component (105) is also provided in the housing (100); the stray light monitoring component (105) is located in the housing (100) and above the focusing center adjustment mechanism (10).

10. The laser cutting head according to claim 8, characterized in that: It also comprises a collimating lens seat (103), on which a collimating lens is mounted, and a second plug interface is provided on the housing (100), through which the collimating lens seat (103) is plugged into the housing (100).

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