Automatic nozzle replacing mechanism of laser cutting machine

Abstract

The utility model discloses an automatic nozzle replacing mechanism of a laser cutting machine, which relates to the technical field of laser cutting machines and comprises a support and a laser head, a plurality of nozzle replacing parts are arranged in the support, each nozzle replacing part comprises a support rod rotatably mounted at the bottom of the support, the top of each support rod is slidably connected with a sleeve, and the sleeve is sleeved on the support rod. The upper end of the sleeve penetrates through the support to be provided with a nozzle replacing base, and a nozzle matched with the nozzle replacing base is installed on the laser head. A limiting piece is further arranged in the support and comprises a plurality of vertical rods fixedly installed on the inner bottom wall of the support, an insulating plate is jointly installed on the vertical rods in a sliding mode, and a round hole allowing the supporting rod to penetrate through is formed in the insulating plate. According to the utility model, the limiting piece is arranged, so that a signal can be sent to the controller when the laser head is pressed down to a certain distance, the laser head is controlled not to be pressed down, the damage to equipment caused by excessive pressing of the laser head is effectively prevented, and the safety of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting machines, in particular to an automatic nozzle replacement mechanism for a laser cutting machine. Background Art

[0002] The existing publication number: CN114799585A, discloses a device for automatically cleaning, detecting and replacing nozzles for laser cutting machines. The device uses a nozzle replacement unit to complete the automated operation of nozzle replacement, and the built-in spring positioning device can simply and effectively solve the problem of loosening and screwing the nozzle thread.

[0003] However, during the process of replacing the nozzle of this device, the laser cutting head needs to press down the nozzle seat and complete the installation and removal of the nozzle by rotating the nozzle seat. During this process, the laser cutting head may overtravel when pressing down, which may cause damage to the laser head or other components, affecting the stability and safety of the equipment operation. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides an automatic nozzle replacement mechanism for a laser cutting machine, which solves the technical problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: an automatic nozzle replacement mechanism for a laser cutting machine, comprising a bracket and a laser head, wherein a plurality of nozzle replacement parts are arranged inside the bracket, wherein the nozzle replacement parts include a support rod rotatably mounted on the bottom of the bracket, a sleeve is slidably connected to the top of the support rod, and the upper end of the sleeve passes through the bracket and is installed with a nozzle replacement seat, and the laser head is installed with a nozzle adapted to the nozzle replacement seat;

[0006] A limiting member is also provided inside the bracket, and the limiting member includes a plurality of vertical rods fixedly mounted on the inner bottom wall of the bracket, an insulating plate is slidably mounted on the plurality of vertical rods, a circular hole is provided on the insulating plate for the support rod to pass through, and a detection electrode is installed on the top of the insulating plate, and a copper ring is fixedly sleeved on the lower end of the sleeve.

[0007] Furthermore, a connecting spring is sleeved on the outside of the vertical pole, and the upper and lower ends of the connecting spring are fixedly connected to the bottom of the insulating plate and the inner bottom wall of the bracket respectively.

[0008] Furthermore, a wire connector is provided at the end of the detection electrode plate, and a controller is provided outside the bracket, and the controller is electrically connected to the wire connector.

[0009] Furthermore, adjustment parts are provided at both ends of the bracket, and the adjustment parts include a pressure plate slidably installed on the side wall of the bracket. The bracket is provided with a lifting groove for the pressure plate to slide up and down, and the end of the pressure plate is rotatably connected to a connecting rod, and the top of the connecting rod is rotatably connected to a slider, and the slider is slidably installed on one side of the bracket.

[0010] Furthermore, a threaded rod is rotatably mounted on one side of the bracket, and the slider is threadedly sleeved on the outside of the threaded rod.

[0011] Furthermore, a triangular handwheel is fixedly connected to the end of the threaded rod.

[0012] By means of the above technical solution, the utility model provides an automatic nozzle replacement mechanism for a laser cutting machine, which has at least the following beneficial effects:

[0013] 1. The utility model sets a limiter so that when the laser head is pressed down to a certain distance, a signal is sent to the controller, thereby controlling the laser head to stop pressing down, effectively preventing the laser head from being damaged by excessive downward pressure and increasing the safety of the equipment.

[0014] 2. The utility model can adjust the distance between the copper ring and the detection plate by setting an adjustment piece, thereby conveniently adjusting the maximum downward pressure distance of the sleeve, which is suitable for the needs of nozzles of different specifications and ensures the flexibility and adaptability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 It is a front view of the utility model;

[0017] Figure 2 This is one of the overall structural diagrams of the utility model;

[0018] Figure 3 This is the second schematic diagram of the overall structure of the utility model;

[0019] Figure 4 for Figure 3 The enlarged view of point A is shown;

[0020] Figure 5 This is a schematic diagram of the structure of the regulating member of the present utility model;

[0021] Figure 6 for Figure 5 An enlarged view of point B is shown.

[0022] In the figure: 1. Bracket; 2. Laser head; 3. Nozzle changing part; 31. Support rod; 32. Sleeve; 33. Nozzle changing seat; 4. Limiting part; 41. Vertical pole; 42. Connecting spring; 43. Insulating plate; 44. Detection plate; 45. Copper ring; 46. Wire connector; 5. Adjusting part; 51. Pressing plate; 52. Lifting slot; 53. Connecting rod; 54. Slider; 55. Threaded rod; 56. Triangular handwheel. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] See also Figure 1-Figure 4The utility model provides an automatic nozzle replacement mechanism for a laser cutting machine, which can prevent the laser head 2 from being over-pressed and play a protective role for the equipment. The replacement mechanism is based on a bracket 1 and a laser head 2. A plurality of nozzle replacement parts 3 are arranged inside the bracket 1, which can replace multiple nozzles at the same time. The nozzle replacement part 3 includes a support rod 31 rotatably mounted on the bottom of the bracket 1. The top of the support rod 31 is slidably connected to a sleeve 32. The upper end of the sleeve 32 passes through the bracket 1 and is installed with a nozzle replacement seat 33. The sleeve 32 is movably connected to the bracket 1. The nozzle replacement seat 33 is provided with a hexagonal slot. The laser head 2 is installed with a nozzle that is compatible with the nozzle replacement seat 33. A spring is installed between the support rod 31 and the sleeve 32. When replacing the nozzle, the laser head 2 drives the original nozzle to be inserted into the nozzle replacement seat 33. At this time, the sleeve 32 is pressed down, and the reaction force of the spring is used to make the nozzle replacement seat 33 and the nozzle collide. Then, the sleeve 32 is driven to rotate by an external driving mechanism, and the nozzle replacement seat 33 can rotate and remove the nozzle. This is a prior art and will not be described in detail here. In order to prevent the sleeve from being over-pressed, the sleeve 32 is driven to rotate. The nozzle replacement seat 33 can rotate and remove the nozzle. In order to prevent the cylinder 32 from being excessively pressed down, a limit member 4 is further provided inside the bracket 1. The limit member 4 includes a plurality of vertical rods 41 fixedly mounted on the inner bottom wall of the bracket 1, and an insulating plate 43 is slidably mounted on the plurality of vertical rods 41. A circular hole is provided on the insulating plate 43 for the support rod 31 to pass through, and a detection plate 44 is installed on the top of the insulating plate 43. A copper ring 45 is fixedly sleeved on the lower end of the sleeve 32. When the sleeve 32 is pressed down, the copper ring 45 is driven to be pressed down. When the copper ring 45 is pressed down to contact with the detection plate 44, a wire connector 46 is provided at the end of the detection plate 44. A controller is provided on the outside of the bracket 1, and the controller is electrically connected to the wire connector 46. The detection plate 44 can transmit a signal to the controller. The controller can control the nozzle on the laser head 2 to no longer be pressed down by the feedback signal, so as to prevent the laser head 2 from being excessively pressed down and avoid damage to the laser head 2 and other components.

[0026] In order to provide a certain buffer distance for the sleeve 32, a connecting spring 42 is sleeved on the outside of the vertical pole 41. The upper and lower ends of the connecting spring 42 are fixedly connected to the bottom of the insulating plate 43 and the inner bottom wall of the bracket 1 respectively. The connecting spring 42 can lift the insulating plate 43. When the sleeve 32 is pressed down until the copper ring 45 and the detection plate 44 are merged, there is still a certain distance between the insulating plate 43 and the bracket 1, which can provide reaction time for the laser head 2 to stop pressing down, thereby improving the safety of the equipment.

[0027] Example 2

[0028] Reference Figure 5-Figure 6As shown, when the equipment is actually used, nozzles of different specifications may require the laser head 2 to be pressed down to different distances. In order to facilitate the adjustment of the maximum downward pressing distance of the sleeve 32, an adjusting member 5 is provided at both ends of the bracket 1. The adjusting member 5 includes a pressing plate 51 slidably mounted on the side wall of the bracket 1. The bracket 1 is provided with a lifting groove 52 for the pressing plate 51 to slide up and down. When the insulating plate 43 is pushed upward by the elastic force of the connecting spring 42, the pressing plate 51 can press the insulating plate 43. By controlling the height of the pressing plate 51, the height of the insulating plate 43 can be controlled, and then the distance between the sleeve 32 and the insulating plate 43 can be controlled. The maximum downward pressing distance of the sleeve 32 is convenient for adjusting the height of the pressing plate 51, and the end of the pressing plate 51 is rotatably connected to the connecting rod 5 3. The top of the connecting rod 53 is rotatably connected to a slider 54, which is slidably installed on one side of the bracket 1. A threaded rod 55 is also rotatably installed on one side of the bracket 1. The slider 54 is threadedly sleeved on the outside of the threaded rod 55. The end of the threaded rod 55 is fixedly connected to a triangular handwheel 56. Rotating the triangular handwheel 56 facilitates the rotation of the threaded rod 55. The rotation of the threaded rod 55 can drive the slider 54 to slide along the side wall of the bracket 1. The sliding of the slider 54 drives the connecting rod 53 to rotate. Due to the guiding effect of the lifting groove 52 on the pressure plate 51, the rotation of the connecting rod 53 can drive the pressure plate 51 to slide up and down along the lifting groove 52, and the insulating plate 43 can be tightly attached to the bottom of the pressure plate 51 through the elastic force of the connecting spring 42, so as to adjust the maximum stroke of the sleeve 32 pressing down.

[0029] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. In addition, the present invention is mainly used to protect mechanical devices, so the control method and circuit connection are no longer explained in detail in the present invention.

[0030] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser cutting machine nozzle automatic replacement mechanism, comprising a bracket (1) and a laser head (2), characterized in that: A plurality of nozzle changing parts (3) are provided inside the bracket (1), and the nozzle changing parts (3) include a support rod (31) rotatably mounted on the bottom of the bracket (1), a sleeve (32) is slidably connected to the top of the support rod (31), and a nozzle changing seat (33) is installed at the upper end of the sleeve (32) through the bracket (1), and a nozzle adapted to the nozzle changing seat (33) is installed on the laser head (2); A limiting member (4) is further provided inside the bracket (1), and the limiting member (4) comprises a plurality of vertical rods (41) fixedly mounted on the inner bottom wall of the bracket (1), an insulating plate (43) being slidably mounted on the plurality of vertical rods (41), a circular hole for the support rod (31) to pass through being provided on the insulating plate (43), and a detection electrode (44) being mounted on the top of the insulating plate (43), and a copper ring (45) being fixedly sleeved on the lower end of the sleeve (32).

2. The automatic nozzle replacement mechanism for a laser cutting machine according to claim 1, characterized in that: The exterior of the vertical rod (41) is sleeved with a connecting spring (42), and the upper and lower ends of the connecting spring (42) are fixedly connected to the bottom of the insulating plate (43) and the inner bottom wall of the bracket (1), respectively.

3. The automatic nozzle replacement mechanism for a laser cutting machine according to claim 1, characterized in that: A wire connector (46) is provided at the end of the detection electrode plate (44), and a controller is provided outside the bracket (1), and the controller is electrically connected to the wire connector (46).

4. The automatic nozzle replacement mechanism for a laser cutting machine according to claim 1, characterized in that: Both ends of the bracket (1) are provided with adjustment members (5), and the adjustment members (5) include a pressure plate (51) slidably mounted on the side wall of the bracket (1). The bracket (1) is provided with a lifting groove (52) for the pressure plate (51) to slide up and down, and the end of the pressure plate (51) is rotatably connected to a connecting rod (53), and the top of the connecting rod (53) is rotatably connected to a slider (54), and the slider (54) is slidably mounted on one side of the bracket (1).

5. The automatic nozzle replacement mechanism for a laser cutting machine according to claim 4, characterized in that: A threaded rod (55) is rotatably mounted on one side of the bracket (1), and the slider (54) is threadably sleeved on the outside of the threaded rod (55).

6. The automatic nozzle replacement mechanism for a laser cutting machine according to claim 5, characterized in that: The end of the threaded rod (55) is fixedly connected to a triangular hand wheel (56).

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