Reflector adjusting mechanism of laser cutting machine

Abstract

The utility model belongs to the technical field of laser cutting machines, and particularly relates to a laser cutting machine reflecting mirror adjusting mechanism which comprises a reflecting mirror body, the reflecting mirror body is sleeved with a hemispherical shell, transverse shafts are fixed to the two sides of the reflecting mirror body in the axial direction, a vertical shaft is fixed to the lower edge of the hemispherical shell in the radial direction, and two servo motors are arranged outside the hemispherical shell. The output ends of the two servo motors are both sleeved with annular nylon belts, one nylon belt is arranged outside the adjacent transverse shaft in a sleeving mode, the other nylon belt is arranged outside the vertical shaft in a sleeving mode, at least two supports are fixed to the outer side of the hemispherical shell, and the ends, away from the hemispherical shell, of the supports are both fixedly connected to the adjacent servo motors. A miniature fan fixedly connected with the support is arranged outside the hemispherical shell, and an air outlet of the miniature fan faces one adjacent servo motor. According to the utility model, a larger heat insulation space is reserved between the reflector body and the two servo motors, so that the overheat maintenance frequency of the two servo motors can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of laser cutting machines, and specifically relates to a reflector adjustment mechanism for a laser cutting machine. Background Art

[0002] The adjustment of the laser cutting machine reflector is a key step to ensure that the laser beam can be accurately and efficiently transmitted to the cutting workpiece. The adjustment of the traditional reflector is usually achieved by rotating the screws on it, such as turning the M1, M2, and M3 screws. These screws allow fine adjustment of the angle and position of the reflector.

[0003] To meet the requirements of multi-angle adjustment, the reflector has at least two degrees of freedom. Two servo motors are installed at different angles on the back of the reflector. After the servo motors are started, they rotate around two rotation axes to change the reflection angle.

[0004] When adjusting the angle of the reflector, two servo motors can be used to directly connect the edge of the reflector for rotation, or a worm can be used to transmit the power between the servo motor and the reflector for rotation. The reflector is close to the laser transmitter in the laser cutting head and is easily heated. The reflector is close to the two servo motors, so the heat of the reflector is directly transferred to the servo motor. The servo motor is prone to overheating and burning after being heated, and the heated servo motor needs to be frequently inspected and repaired. For this reason, we propose a reflector adjustment mechanism for a laser cutting machine. Utility Model Content

[0005] The purpose of the utility model is to provide a reflector adjustment mechanism for a laser cutting machine, wherein a large heat insulation distance is left between the reflector body and two servo motors, so as to reduce the frequency of overheating maintenance of the two servo motors.

[0006] The technical solutions adopted in this utility are as follows:

[0007] A reflector adjustment mechanism for a laser cutting machine comprises a reflector body, a hemispherical shell is sleeved on the outside of the reflector body, a horizontal axis is fixed axially on both sides of the reflector body, a vertical axis is fixed radially on the lower edge of the hemispherical shell, two servo motors are arranged on the outside of the hemispherical shell, and the output ends of the two servo motors are sleeved with annular nylon belts, one of the nylon belts is sleeved on the outside of an adjacent horizontal axis, and the other nylon belt is sleeved on the outside of the vertical axis, and the two servo motors are controlled by a control host to drive the two nylon belts to respectively rotate one horizontal axis and the vertical axis forward or reversely. Axis, so that the reflector body has two rotational freedoms in the horizontal and vertical directions, set the rotation angle until the reflector body reflects the laser beam of the laser cutting head to the target point, and then start the laser cutting head. Even if the temperature of the reflector body rises due to the heat transfer of the laser transmitter, a large insulation distance is left between the reflector body and the two servo motors through the nylon belt, which reduces the overheating of the two servo motors due to their proximity to the reflector body. The risk of the two servo motors being burned out is greatly reduced, which can reduce the frequency of overheating maintenance of the two servo motors and save maintenance costs and time.

[0008] At least two brackets are fixed on the outside of the hemispherical shell, and one end of the bracket away from the hemispherical shell is fixedly connected to an adjacent servo motor. The bracket fixes the hemispherical shell and the adjacent servo motor together. The servo motor can rotate synchronously with the hemispherical shell and can always act on the nylon belt and the horizontal axis after startup.

[0009] A micro fan fixedly connected to the bracket is arranged on the outside of the hemispherical shell, and an air outlet of the micro fan faces an adjacent servo motor. During laser cutting, the micro fan can be started to blow air to the adjacent servo motor for heat dissipation, thereby further reducing the occurrence of overheating of the adjacent servo motor. The airflow is blocked by the hemispherical shell and will not blow onto the reflector body, thereby reducing dust attached to the reflector body with the airflow, making it convenient for the reflector body to maintain good reflective performance.

[0010] A first pulley is fixed on the outer side of one of the transverse shafts. The outer side of the first pulley is recessed inwards and a nylon belt is inserted into the recessed part. The first pulley is used to limit the horizontal position of the nylon belt to prevent the nylon belt from slipping off the transverse shaft.

[0011] A second pulley is fixed on the outer side of the vertical shaft. The outer side of the second pulley is connected to the inner side of a nylon belt. The second pulley rotates synchronously with the nylon belt and is used to vertically limit the nylon belt to prevent the nylon belt from slipping off the vertical shaft.

[0012] A support bearing is fixed to one end of the vertical shaft away from the hemispherical shell. The support bearing is used to circumferentially straighten the vertical shaft, thereby improving the stability of the entire adjustment mechanism inside the laser cutting head and not hindering the rotation of the vertical shaft.

[0013] The technical effects achieved by this utility model are:

[0014] The present invention discloses a practical reflector adjustment mechanism for a laser cutting machine. The control host controls two servo motors to drive two nylon belts, which respectively rotate a horizontal axis and a vertical axis forward or reversely, so that the reflector body has two rotational degrees of freedom in the horizontal and vertical directions. The rotation angle is set until the reflector body reflects the laser beam of the laser cutting head to the target point. Then, the laser cutting head is started. Even if the temperature of the reflector body increases due to the heat transfer of the laser transmitter, a large heat insulation distance is left between the reflector body and the two servo motors through the nylon belts, so as to reduce the overheating caused by the two servo motors being close to the reflector body. The risk of the two servo motors being burned out is greatly reduced, and the frequency of overheating maintenance of the two servo motors can be reduced, thus saving maintenance cost and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of a reflector adjustment mechanism for a laser cutting machine of the present invention;

[0016] Figure 2 It is a side view of the reflector body of the utility model;

[0017] Figure 3 It is the front view of the hemispherical shell of the present utility model;

[0018] Figure 4 It is a front view of one of the nylon straps of the present invention.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Reflector body; 2. Hemispherical shell; 3. Horizontal axis; 4. Vertical axis; 5. Servo motor; 6. Nylon belt; 7. Bracket; 8. Micro fan; 9. First pulley; 10. Second pulley; 11. Support bearing. DETAILED DESCRIPTION

[0021] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0022] like Figure 1-4As shown, a reflector adjustment mechanism for a laser cutting machine comprises a reflector body 1, a hemispherical shell 2 is sleeved on the outside of the reflector body 1, a horizontal axis 3 is axially fixed on both sides of the reflector body 1, a vertical axis 4 is radially fixed on the lower edge of the hemispherical shell 2, and two servo motors 5 are arranged on the outside of the hemispherical shell 2. The Chinese utility model with reference publication number CN220971073U is used for the reflector adjustment mechanism on the laser cutting machine. The two servo motors 5 and the corresponding laser cutting machine are prior art, and the difference lies in the installation position and purpose of the two servo motors 5. Both servo motors 5 are connected to the control host of the laser cutting machine by signal. The output ends of the two servo motors 5 are sleeved with annular nylon belts 6, one of which is sleeved on the outside of an adjacent horizontal axis 3, and the other nylon belt 6 is sleeved on the outside of the vertical axis 4. The hemispherical shell 2 and the vertical axis 4 are first installed inside the laser cutting head of the laser cutting machine, and used The reflector body 1 is supported and two servo motors 5 are fixed with screws. Before cutting, it is generally necessary to adjust the output light beam of the laser cutting head. The control host controls the two servo motors 5 to drive two nylon belts 6 to respectively rotate a horizontal axis 3 and a vertical axis 4 forward or reversely, so that the reflector body 1 has two rotational degrees of freedom in the horizontal and vertical directions. By setting the rotation angle of the two servo motors 5, the rotation angle of the reflector body 1 can be controlled until the reflector body 1 reflects the laser beam of the laser cutting head to the target point. Then, the laser cutting head is started. Even if the temperature of the reflector body 1 rises due to the heat transfer of the laser transmitter, a large insulation distance is left between the reflector body 1 and the two servo motors 5 through the nylon belts 6, so as to reduce the overheating caused by the two servo motors 5 being close to the reflector body 1. The risk of the two servo motors 5 being burned is greatly reduced, and the frequency of overheating maintenance of the two servo motors 5 can be reduced.

[0023] As an optional embodiment, the nylon belt 6 can be replaced by a transmission chain, and the multiple holes of the transmission chain can be used to increase the air flow gap, making heat dissipation more convenient.

[0024] like Figure 1 and Figure 2 As shown, you can also refer to the Chinese utility model with publication number CN220006358U for the reflector adjustment mechanism on the laser cutting machine. Attitude sensors are installed on the horizontal axis 3 and the vertical axis 4. This technical solution is a prior art and is not shown in the figure. The initial position and the change position of the horizontal axis 3 and the vertical axis 4 are recorded respectively by the attitude sensor. The two position signals are sent to the control host. After comparison, the current angle of the reflector body 1 can be obtained.

[0025] like Figure 1 , Figure 3 and Figure 4As shown, at least two brackets 7 are fixed on the outside of the hemispherical shell 2, and one end of the bracket 7 away from the hemispherical shell 2 is fixedly connected to an adjacent servo motor 5. The bracket 7 fixes the hemispherical shell 2 and the adjacent servo motor 5 together. The servo motor 5 can rotate synchronously with the hemispherical shell 2, and can always act on the nylon belt 6 and the horizontal axis 3 after starting. In this way, the isolation of the two servo motors 5 for driving is good.

[0026] like Figure 3 and Figure 4 As shown, a micro fan 8 fixedly connected to the bracket 7 is arranged on the outside of the hemispherical shell 2, and the air outlet of the micro fan 8 faces an adjacent servo motor 5. During laser cutting, the micro fan 8 can be started to blow air to the adjacent servo motor 5 for heat dissipation, thereby further reducing the overheating of the adjacent servo motor 5. The airflow is blocked by the hemispherical shell 2 and will not blow onto the reflector body 1, thereby reducing dust attached to the reflector body 1 with the airflow, making it convenient for the reflector body 1 to maintain good reflection performance.

[0027] like Figure 1 and Figure 3 As shown, a first pulley 9 is fixed to the outside of one of the horizontal axes 3. The outside of the first pulley 9 is recessed inward and the recess is engaged with a nylon belt 6. The first pulley 9 rotates synchronously with the nylon belt 6 and is used to limit the horizontal position of the nylon belt 6 to prevent the nylon belt 6 from slipping off the horizontal axis 3.

[0028] like Figure 1 and Figure 3 As shown, a second pulley 10 is fixed on the outside of the vertical shaft 4. The outside of the second pulley 10 is connected to the inside of a nylon belt 6. While the second pulley 10 rotates synchronously with the nylon belt 6, the second pulley 10 is used to vertically limit the nylon belt 6 to prevent the nylon belt 6 from slipping off the vertical shaft 4.

[0029] like Figure 1 and Figure 3 As shown, a support bearing 11 is fixed to one end of the vertical shaft 4 away from the hemispherical shell 2. The support bearing 11 is used to circumferentially straighten the vertical shaft 4, thereby improving the stability of the entire adjustment mechanism inside the laser cutting head and not hindering the rotation of the vertical shaft 4.

[0030] The working principle of the utility model is as follows: before cutting, it is generally necessary to adjust the outgoing light beam of the laser cutting head, and the control host controls two servo motors 5 to drive two nylon belts 6, respectively rotating a horizontal axis 3 and a vertical axis 4 forward or reversely, so that the reflector body 1 has two rotational degrees of freedom in the horizontal and vertical directions. By setting the rotation angle of the two servo motors 5, the rotation angle of the reflector body 1 can be controlled until the reflector body 1 reflects the laser beam of the laser cutting head to the target point, and then the laser cutting head is started. Even if the temperature of the reflector body 1 rises due to the heat transfer of the laser transmitter, a large thermal insulation distance is left between the reflector body 1 and the two servo motors 5 through the nylon belts 6, so as to reduce the overheating caused by the two servo motors 5 being close to the reflector body 1. The risk of the two servo motors 5 being burned is greatly reduced, and the frequency of overheating maintenance of the two servo motors 5 can be reduced.

[0031] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A reflector adjustment mechanism for a laser cutting machine, comprising a reflector body (1), characterized in that: The reflector body (1) is sleeved with a hemispherical shell (2), both sides of the reflector body (1) are axially fixed with transverse axes (3), the lower edge of the hemispherical shell (2) is radially fixed with a vertical axis (4), and two servo motors (5) are arranged outside the hemispherical shell (2), and the output ends of the two servo motors (5) are sleeved with annular nylon belts (6), one of the nylon belts (6) is sleeved outside an adjacent transverse axis (3), and the other nylon belt (6) is sleeved outside the vertical axis (4).

2. A reflector adjustment mechanism for a laser cutting machine according to claim 1, characterized in that: At least two brackets (7) are fixed on the outside of the hemispherical shell (2), and one end of the bracket (7) away from the hemispherical shell (2) is fixedly connected to an adjacent servo motor (5).

3. The reflector adjustment mechanism for a laser cutting machine according to claim 1, characterized in that: A micro fan (8) fixedly connected to the bracket (7) is arranged outside the hemispherical shell (2), and an air outlet of the micro fan (8) faces an adjacent servo motor (5).

4. The reflector adjustment mechanism for a laser cutting machine according to claim 1, characterized in that: A first pulley (9) is fixed on the outside of one of the transverse shafts (3); the outside of the first pulley (9) is recessed inwards and a nylon belt (6) is inserted into the recessed portion.

5. The reflector adjustment mechanism for a laser cutting machine according to claim 1, characterized in that: A second pulley (10) is fixed on the outer side of the vertical shaft (4), and the outer side of the second pulley (10) is connected to the inner side of a nylon belt (6).

6. The reflector adjustment mechanism for a laser cutting machine according to claim 1, characterized in that: A support bearing (11) is fixed to one end of the vertical shaft (4) away from the hemispherical shell (2).

Images