Ranging module, laser and laser processing equipment

Abstract

The utility model provides a distance measuring module, a laser and a laser processing device, the distance measuring module comprises a housing, a circuit board, a thimble and a detection mechanism, the housing is provided with an accommodating cavity, and a first opening and a second opening communicated with the accommodating cavity; the circuit board covers the first opening; the ejector pin penetrates through the second opening in a lifting mode, is partially located in the containing cavity and is provided with a starting position and a triggering position located above the starting position; the detection mechanism is arranged in the containing cavity and comprises a trigger part and an induction part, the trigger part is connected with the ejector pin, and the induction part is arranged on the surface, facing the containing cavity, of the circuit board and electrically connected with the circuit board; when the ejector pin is located at the triggering position, the triggering piece triggers the induction piece. According to the technical scheme, the distance measuring module capable of accurately measuring distance is provided.

Description

[0001] Related applications

[0002] This application claims priority to Chinese patent applications filed on January 25, 2024, with application numbers 202410111345.8 and 202410108594.1, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This utility model relates to the field of laser technology, and in particular to a ranging module, a laser, and laser processing equipment. Background Technology

[0004] Laser processing equipment, which uses lasers as a medium to achieve processing or distance measurement, is becoming increasingly popular. Equipment such as laser engraving machines and laser marking machines can be used for laser processing. Typically, during laser processing, the laser focus needs to be on the processing location to improve processing accuracy and efficiency. In related technologies, manual distance measurement is cumbersome and its accuracy is difficult to guarantee, while contact distance measurement methods are easily affected by dust or oil generated during laser processing, leading to inaccurate detection. Utility Model Content

[0005] The main purpose of this invention is to provide a ranging module, a laser, and laser processing equipment, with the aim of providing a ranging module that can accurately measure distances.

[0006] To achieve the above objectives, this utility model proposes a ranging module, comprising:

[0007] A housing, the housing having a receiving cavity and a first opening and a second opening communicating with the receiving cavity;

[0008] A circuit board, which is disposed over the first opening;

[0009] A ejector pin, which is vertically and vertically inserted through the second opening and partially located within the receiving cavity, the ejector pin having a starting position and a trigger position located above the starting position; and

[0010] The detection mechanism is disposed in the receiving cavity. The detection mechanism includes a trigger and a sensor. The trigger is connected to the ejector pin, and the sensor is disposed on the surface of the circuit board facing the receiving cavity and is electrically connected to the circuit board.

[0011] When the pin is in the trigger position, the trigger element triggers the sensor element.

[0012] In an embodiment of the present application, the ranging module further comprises a reset member, which is arranged in the accommodating cavity and acts between the shell and the ejector pin to make the ejector pin have a tendency to be kept in the initial position.

[0013] In an embodiment of the present application, the reset member is an elastic member and is arranged between the trigger member and a top cavity surface of the accommodating cavity.

[0014] In an embodiment of the present application, the trigger member comprises a fixed part and a trigger part, the fixed part is sleeved and fixed to the ejector pin, and the trigger part is connected to one end of the fixed part close to the circuit board and is arranged to extend upward;

[0015] And / or, the inductive member has oppositely arranged transmitting and receiving ends, the trigger member is a shielding structure, and when the ejector pin is in the trigger position, the trigger member blocks a signal path between the transmitting and receiving ends;

[0016] And / or, the trigger member is provided with a threaded hole, at least a part of an outer surface of the ejector pin is provided with external threads, and the threaded hole and the external threads are matched to make the trigger member and the ejector pin be threadedly connected.

[0017] In an embodiment of the present application, the shell comprises a base and a dustproof seat, the base is formed with a first accommodating space inside, a side wall of the base is provided with a communication port communicating with the first accommodating space, the dustproof seat is arranged on an outer wall of the base provided with the communication port, a second accommodating space is formed in the dustproof seat, and the second accommodating space and the first accommodating space are communicated to form the accommodating cavity;

[0018] The dustproof seat is provided with the first opening on a side away from the base, the base is provided with the second opening, the ejector pin is inserted into the first accommodating space, and the trigger member is arranged from the first accommodating space to the second accommodating space through the communication port.

[0019] In an embodiment of the present application, the dustproof seat is provided with an extension part protruding from a top of the base, the extension part is provided with a dustproof cavity and an avoiding port communicating with the dustproof cavity, the avoiding port and the first opening are located on the same side of the dustproof seat, and the circuit board is arranged in the avoiding port;

[0020] Part of components on the circuit board are arranged on a surface of the circuit board facing the dustproof cavity.

[0021] In an embodiment of the present application, the extension part is provided with one of a limiting groove and a limiting protrusion, and a mounting position for fixing the ranging module is provided with the other one of the limiting groove and the limiting protrusion.

[0022] When the distance measuring module is installed in the mounting position, the limiting protrusion is inserted into the limiting groove.

[0023] In an embodiment of the present application, the shell is provided with a plug hole in communication with the accommodating cavity, the plug hole is arranged opposite to the second opening, and the ejector pin can be inserted into the plug hole.

[0024] And / or, the shell is provided with a limiting gap, and at least part of the structure of the circuit board is arranged in the limiting gap.

[0025] The present application also provides a laser device, which comprises the distance measuring module as described in any one of the preceding embodiments, and when the ejector pin of the distance measuring module is in the triggering position, the lower end surface of the ejector pin is not higher than the light outlet of the laser device.

[0026] In an embodiment of the present application, the laser device comprises:

[0027] A shell is formed with an accommodating cavity in the shell, and the bottom of the accommodating cavity is provided with an opening;

[0028] A laser module is arranged in the accommodating cavity, and the laser module is arranged in a lifting manner, the light outlet of the laser module faces outward from the opening, and the distance measuring module is arranged on the laser module and close to the light outlet.

[0029] The present application also provides a laser processing device, which is provided with the laser device as described in any one of the preceding embodiments.

[0030] The technical scheme of the present application provides a distance measuring module which can be applied to a laser processing device to assist in detecting the distance between the laser focal point or light outlet of the laser device and the processing position; the shell of the distance measuring module is provided with a first opening and a second opening, the circuit board of the distance measuring module is installed in the first opening, the ejector pin of the distance measuring module is inserted into the second opening, the ejector pin is arranged in a lifting manner and connected with the triggering member of the detection mechanism, and the sensing member of the detection mechanism is fixed on the circuit board and electrically connected with the circuit board. In this way, the first opening of the accommodating cavity is closed by the circuit board to prevent dust and protect the circuit board, so that the detection mechanism is prevented from being contaminated by dust, oil stains and the like, the performance of the distance measuring module is ensured to be stable, and the circuit board is arranged outside the shell, so that external devices can be easily connected.

[0031] When the ranging module is used in laser processing equipment, it can be fixed on a liftable laser or a liftable laser module within a laser. During ranging, the ranging module descends with the laser or laser module, bringing the ejector pin into contact with the processing position. The laser or laser module continues to descend, causing the ejector pin to rise into the receiving cavity. When the ejector pin reaches the trigger position, the trigger element activates the sensing element to generate a sensing signal. The circuit board processes and transmits this signal. The laser processing equipment can calculate the distance between the laser focus and the processing position based on the distance between the lower end face of the ejector pin and the laser focal point or output port when the sensing element is triggered, as well as the descent distance of the laser or laser module. After ranging is completed, the laser or laser module can be raised a fixed distance, which is the distance between the lower end face of the ejector pin and the laser focal point when the sensing element is triggered, ensuring the laser focal point accurately falls on the processing position.

[0032] In other words, the ranging module of this application can accurately detect and obtain the distance between the laser focus or light outlet and the processing position, with high ranging accuracy, thereby ensuring that the laser focus falls accurately on the processing position. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0034] Figure 1 This is a structural diagram of an embodiment of the laser of this application;

[0035] Figure 2 for Figure 1 A structural diagram showing some laser modules protruding from the outer casing in a medium-sized laser;

[0036] Figure 3 for Figure 1 A structural diagram showing the removal of part of the outer casing by the laser.

[0037] Figure 4 for Figure 3 A magnified view of the laser at the ranging module;

[0038] Figure 5 for Figure 3 Exploded view of the laser at the ranging module;

[0039] Figure 6 This is a structural diagram of an embodiment of the ranging module of this application;

[0040] Figure 7 For Figure 6 A sectional view of the ranging module;

[0041] Figure 8 For Figure 6 An exploded view of the ranging module;

[0042] Figure 9 A sectional view of the ranging module in a non-triggered state in an embodiment of the application;

[0043] Figure 10 A sectional view of the ranging module in a triggered state in an embodiment of the application.

[0044] BRIEF DESCRIPTION OF DRAWINGS

[0045] Reference Name Reference Name 100 Laser 317 Dustproof cavity 10 Shell 318 Limiting protrusion 20 Laser module 319 Limiting notch 30 Distance measuring module 32 Circuit board 31 Housing 321 Terminal block 311 Base 33 Thimble 312 Dustproof seat 34 Detection mechanism 313 Containing cavity 341 Trigger 3131 First containing space 3411 Fixed part 3132 Second containing space 3412 Trigger part 3133 First opening 3413 Screw hole 3134 Second opening 342 Sensing part 314 Communication port 35 Reset part 315 Plug-in hole 40 Radiator 316 Extension 41 Limiting groove

[0046] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0048] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0049] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood broadly, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal communication of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the same or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the present application.

[0051] The utility model provides a distance measurement module 30.

[0052] Combined with reference Figures 1-7 In some embodiments of the present application, the distance measurement module 30 includes a housing 31, a circuit board 32, a thimble 33 and a detection mechanism 34, the housing 31 is provided with containing cavity 313 and with containing cavity 313 The first opening 3133 and the second opening 3134;The circuit board 32 is covered in the first opening 3133;The thimble 33 is liftably threaded in the second opening 3134, and part is located in the containing cavity 313, the thimble 33 has starting position and trigger position above starting position;The detection mechanism 34 is located in the containing cavity 313, and the detection mechanism 34 includes trigger 341 and inductive piece 342, trigger 341 is connected with thimble 33, inductive piece 342 is located on the surface of circuit board 32 towards containing cavity 313, and is electrically connected with circuit board 32;Wherein, when thimble 33 is in trigger position, trigger 341 triggers inductive piece 342.

[0053] The distance measurement module 30 provided in the present application can be applied in laser processing equipment such as laser engraving machine, laser marking machine, laser cutting machine and the like. The laser processing equipment usually includes equipment main body and laser 100 installed on the equipment main body, the laser 100 is used for emitting laser, including shell 10 and laser module 20 arranged in the shell 10, also including adapter plate for transmitting energy and signal, and structures such as heat dissipation module can also be arranged. In the laser processing equipment, in order to process the processing position at different heights, the laser 100 as a whole can be lifted or the laser module 20 in the laser 100 can be lifted, so that the laser focal point falls on the processing position, and the processing precision and laser efficiency are improved. The distance measurement module 30 can accurately detect the distance between the laser focal point or the light outlet of the laser module 20 and the processing position, so that the laser 100 or the laser module 20 is lifted by a corresponding distance.

[0054] Specifically, the distance measuring module 30 comprises a shell 31, a circuit board 32, a thimble 33 and a detection mechanism 34. The shell 31 is provided with a receiving cavity 313. The side wall of the shell 31 is provided with a first opening 3133 communicating with the receiving cavity 313. The bottom wall of the shell 31 is provided with a second opening 3134 communicating with the receiving cavity 313. The circuit board 32 is covered on the first opening 3133. The surface of the circuit board 32 exposed in the receiving cavity can be provided with a terminal seat 321 for connecting power supply and control system, etc. The thimble 33 extends along the lifting direction of the laser module 20 and passes out from the second opening 3134, so that the thimble 33 is arranged to be liftable relative to the shell 31 and has a starting position and a trigger position above the starting position. The detection mechanism 34 is arranged in the receiving cavity. The trigger piece 341 of the detection mechanism 34 is connected with the thimble 33. The sensing piece 342 of the detection mechanism 34 is arranged on the circuit board 32 and electrically connected with the circuit board 32, so as to avoid the detection mechanism 34 from being polluted by smoke and oil stains in the processing process. The trigger piece 341 of the detection mechanism 34 is connected with the thimble 33 inserted into the receiving cavity 313, so as to switch between the starting position and the trigger position along with the lifting of the thimble 33. Referring to Figure 9 and Figure 10 When the thimble 33 is not subjected to other external force, the thimble 33 can fall in the starting position under the action of its own gravity or the reset piece 35 in the following embodiment. When distance measurement is needed, the laser 100 or the laser module 20 is lowered to make the distance measuring module 30 descend together. After the thimble 33 abuts against the position to be processed, the laser 100 or the laser module 20 is continuously lowered to make the distance measuring module 30 descend and make the thimble 33 ascend into the receiving cavity 313 until the thimble 33 ascends to the trigger position. The trigger piece 341 triggers the sensing piece 342. After the sensing piece 342 generates a sensing signal, the sensing signal can be transmitted to the control system through the circuit board 32. At this time, only the distance between the lower end surface of the thimble 33 and the laser focal point or the light outlet of the laser module 20 in this state and the lowering distance of the laser 100 or the laser module 20 are needed to be known, so as to calculate the distance between the laser focal point and the position to be processed. The distance between the lower end surface of the thimble 33 in the trigger position of the distance measuring module 30 and the laser focal point or the light outlet of the laser module 20 can be set in advance. Therefore, after the sensing piece 342 is triggered, the laser module 20 can be controlled to move upward by a fixed distance, which is the distance between the lower end surface of the thimble 33 in the trigger position of the distance measuring module 30 and the laser focal point, so as to ensure that the laser focal point falls on the position to be processed and improve the processing precision. The lowering distance of the laser 100 or the laser module 20 can be obtained according to the working distance of the motor or the cylinder driving piece for driving the laser 100 or the laser module 20 to lift.

[0055] The sensing member 342 can be a Hall sensor, a photoelectric switch, a proximity switch, a grating reading head, etc. For example, the sensing member 342 is a Hall sensor, and the triggering member 341 is a magnet. When the triggering member 341 moves with the needle 33 between the triggering position and the starting position, the magnetic field strength around the Hall sensor changes, for example, from weak to strong or from strong to weak. The magnetic field strength detected by the Hall sensor when the triggering member 341 is in the triggering position is used as a triggering condition. When the triggering member 341 reaches the triggering position, the Hall sensor generates a sensing signal. If the proximity switch is used as the sensing member 342, the triggering member 341 can touch the sensing surface of the proximity switch when the needle 33 is in the triggering position, so that the proximity switch generates a sensing signal. If the grating reading head is used as the sensing member 342, and the triggering member 341 is a scale grating extending along the moving direction of the needle 33. When the needle 33 moves from the starting position to the triggering position, the scale grating moves relative to the grating reading head. The grating reading head can read the displacement of the scale grating relative to the grating reading head, and convert the displacement into an electrical signal. The displacement data is obtained by processing the electrical signal by a signal processing circuit. Thus, when the triggering member 341 moves from the starting position to the triggering position, a sensing signal is generated. The use of other structures as the detection mechanism 34 will not be described here.

[0056] Optionally, the shell 31 is provided with a limiting gap 319, and at least part of the structure of the circuit board 32 is arranged in the limiting gap 319 to limit the circuit board 32 and improve the installation stability of the circuit board 32.

[0057] In addition, when the distance measuring module 30 is applied to a laser processing device, the distance measuring module 30 can be arranged near the light outlet of the laser module 20. Only the lower end surface of the needle 33 in the triggering position needs to be not higher than the light outlet. The distance measuring module 30 is arranged near the light outlet of the laser module 20, so that the position contacted by the needle 33 of the distance measuring module 30 is closer to the processing position, thereby the distance between the position to be processed below the light outlet and the laser module 20 can be measured more accurately. Of course, the laser 100 can be translated after the distance measurement is completed to align the light outlet with the measured position.

[0058] Therefore, it can be understood that the technical scheme of the application proposes a ranging module 30 which can be applied to a laser processing device to assist in detecting the distance between the laser focal point or light outlet of the laser 100 and the processing position; the housing 31 of the ranging module 30 is provided with a first opening 3133 and a second opening 3134, the circuit board 32 of the ranging module 30 is installed in the first opening 3133, the thimble 33 of the ranging module 30 is arranged through the second opening 3134, the thimble 33 is arranged in a lifting manner and is connected with the trigger 341 of the detection mechanism 34, and the inductor 342 of the detection mechanism 34 is fixed on the circuit board 32 and is electrically connected with the circuit board 32. In this way, the first opening 3133 of the closed accommodation cavity 313 is closed by the circuit board 32 to play a dustproof and protective role, so as to avoid the detection mechanism 34 from being contaminated by dust or oil stains and the like, ensure the stable performance of the ranging module 30, and the circuit board 32 is located outside the housing 31, so as to facilitate the connection with external devices.

[0059] When the ranging module 30 is applied to the laser processing device, the ranging module 30 is fixed on the laser 100 or the laser module 20 in the laser 100 which can be lifted, when the ranging is performed by using the ranging module 30, the ranging module 30 is lowered with the laser 100 or the laser module 20, the thimble 33 is abutted with the processing position, and the laser 100 or the laser module 20 is continuously lowered, so that the thimble 33 is lifted into the accommodation cavity 313, when the thimble 33 moves to the trigger position, the trigger 341 triggers the inductor 342 to generate an induction signal, the circuit board 32 can process and transmit the induction signal, and the laser processing device can measure the distance between the laser focal point or light outlet and the processing position according to the distance between the lower end surface of the thimble 33 of the ranging module 30 when the thimble 33 triggers the inductor 342 and the laser focal point or light outlet, and the lowering distance of the laser 100 or the laser module 20; after the ranging is completed, the laser 100 or the laser module 20 can be lifted by a fixed distance, and the fixed distance is the distance between the lower end surface of the thimble 33 when the thimble 33 triggers the inductor 342 and the laser focal point, so that the laser focal point is accurately located on the processing position.

[0060] That is, the ranging module 30 of the application can accurately detect and obtain the distance between the laser focal point or light outlet and the processing position, and the ranging precision is high, so as to ensure that the laser focal point is accurately located on the processing position.

[0061] Please refer to Figure 7 and Figure 8 In some embodiments of the application, the ranging module 30 further comprises a reset member 35 which is arranged in the accommodation cavity 313 and acts between the housing 31 and the thimble 33, so that the thimble 33 has a tendency to be kept in the starting position.

[0062] In this embodiment, the reset member 35 is arranged in the distance measuring module 30. The reset member 35 can be an elastic member such as a spring, a gas spring, an elastic air bag, etc. The elastic member can be arranged on the side of the top wall opposite to the insertion port and apply an elastic pushing force to the ejector pin 33 towards the side of the insertion port, so that the ejector pin 33 has a tendency to move from the triggered position to the initial position and to be kept in the initial position. The elastic member can also be arranged on the cavity wall provided with the insertion port and connected with the ejector pin 33 to apply an elastic pulling force to the ejector pin 33, so that the ejector pin 33 also has a tendency to move from the triggered position to the initial position and to be kept in the initial position. The reset member 35 can also be a magnetic structure. The magnetic structure can include a first magnetic member and a second magnetic member arranged on the ejector pin 33 and the housing 31 respectively. There can be a magnetic attraction force between the first magnetic member and the second magnetic member, which makes the ejector pin 33 have a tendency to move from the triggered position to the initial position and to be kept in the initial position. There can also be a magnetic repulsion force between the first magnetic member and the second magnetic member, which can be used to push the ejector pin 33 to have a tendency to move from the triggered position to the initial position and to be kept in the initial position. When the ejector pin 33 is moved into the accommodating cavity 313 by an external force, the action force applied by the reset member 35 can be overcome. When the external force applied to the ejector pin 33 is removed, the action force applied by the reset member 35 to the ejector pin 33 can make the ejector pin 33 move to the initial position. In this way, the ejector pin 33 can be kept in the initial position stably without needing to be pressed against the position to be processed, and a downward action force can be applied to the ejector pin 33 to avoid the ejector pin 33 from bouncing upward due to the reaction force when the ejector pin 33 initially contacts the position to be processed, which can cause the sensing member 342 to be triggered by mistake.

[0063] For reference Figure 7 In some embodiments of the present application, the reset member 35 is an elastic member and is arranged between the trigger member 341 and the top cavity surface of the accommodating cavity 313.

[0064] In this embodiment, the reset member 35 can be an elastic member such as a spring, a gas spring, an elastic air bag, etc. and is arranged between the trigger member 341 and the top cavity surface of the accommodating cavity 313. In this way, when the ejector pin 33 rises into the accommodating cavity 313 and drives the trigger member 341 to rise, the elastic member is compressed and generates an elastic force downward, so that the ejector pin 33 can be prevented from bouncing upward due to the reaction force when the ejector pin 33 initially contacts the position to be processed. When the laser 100 or the laser module 20 rises, the elastic member presses the trigger member 341 to make the ejector pin 33 gradually extend out of the accommodating cavity 313 until the initial position. The elastic member is arranged on the side close to the top wall of the accommodating cavity 313, so that the elastic member does not affect the reset of the trigger member 341 and the ejector pin 33 to the initial position.

[0065] For reference Figure 7 and Figure 8In some embodiments of the present application, the trigger 341 comprises a fixed part 3411 and a trigger part 3412, the fixed part 3411 is sleeved and fixed on the ejector pin 33, and the trigger part 3412 is connected to one end of the fixed part 3411 close to the circuit board 32 and is arranged to extend upward. In this way, the installation position of the electronic device such as the circuit board 32 can be as far away from the light outlet of the laser module 20 as possible, thereby being far away from the machining position and the laser, avoiding the adhesion of dust and other impurities in the electronic device such as the circuit board 32, and avoiding the influence of the heat generated during the machining process on the performance of the electronic device.

[0066] In some embodiments of the present application, the inductor 342 has a transmitting end and a receiving end arranged oppositely, and the trigger 341 is a shielding structure; when the ejector pin 33 is in the triggered position, the trigger 341 blocks the signal path between the transmitting end and the receiving end.

[0067] In the present embodiment, the inductor 342 comprises a transmitting end and a receiving end arranged oppositely, the trigger 341 is arranged as a shielding structure and can enter and exit between the transmitting end and the receiving end when the ejector pin 33 moves between the triggered position and the starting position, so as to shield or hinder the receiving end from receiving the signal sent by the transmitting end. Among them, the normal state can be that the receiving end normally receives the signal sent by the transmitting end, at this time, the ejector pin 33 is in the starting position, and the trigger 341 is located outside the transmitting end and the receiving end; the triggered state can be that the receiving end cannot receive the signal sent by the transmitting end, at this time, the ejector pin 33 is in the triggered position, and the trigger 341 is arranged between the transmitting end and the receiving end; in this way, when the receiving end cannot normally receive the signal sent by the transmitting end, the inductor 342 generates an inductive signal, indicating that the measured moving structure has moved a preset distance or has moved to a preset position.

[0068] In addition, the normal state can also be that the receiving end cannot receive the signal sent by the transmitting end, at this time, the ejector pin 33 is in the starting position, and the trigger 341 is arranged between the transmitting end and the receiving end; the triggered state can be that the receiving end normally receives the signal sent by the transmitting end, at this time, the ejector pin 33 is in the triggered position, and the trigger 341 is located outside the transmitting end and the receiving end; in this way, when the receiving end can normally receive the signal sent by the transmitting end, the inductor 342 generates an inductive signal.

[0069] Among them, the inductor 342 can be a photoelectric switch, the transmitting end can emit an optical signal to the receiving end, for example, the normal state can be that the receiving end can receive the optical signal, and the triggered state can be that the receiving end cannot receive the optical signal sent by the transmitting end; when the receiving end cannot normally receive the optical signal sent by the transmitting end, the inductor 342 generates an inductive signal.

[0070] The receiving end can also be a Hall sensor, the transmitting end is set as a magnet, and the trigger piece 341 is set as a magnetic isolation piece. When the trigger piece 341 is arranged between the transmitting end and the receiving end, the Hall sensor cannot sense a magnetic field or senses a magnetic field with a weak intensity. The Hall sensor can sense a strong magnetic field when the trigger piece 341 is located outside the transmitting end and the receiving end, which is a normal state. When the trigger piece 341 is arranged between the transmitting end and the receiving end, the Hall sensor senses a magnetic field with a weak intensity or cannot sense a magnetic field, which is a triggering state. When the Hall sensor senses a magnetic field with a weak intensity or cannot sense a magnetic field, the sensing piece 342 generates an induction signal.

[0071] Please refer to Figure 8 In some embodiments of the present application, the trigger piece 341 is provided with a threaded hole 3413, at least part of the outer surface of the ejector pin 33 is provided with an external thread, and the threaded hole 3413 cooperates with the external thread to threadedly connect the trigger piece 341 and the ejector pin 33. In this way, the trigger piece 341 and the ejector pin 33 can be easily disassembled and assembled, and the installation height of the trigger piece 341 on the ejector pin 33 can be adjusted, so that the distance between the starting position and the triggering position of the ejector pin 33 can be adjusted to adapt to different processing requirements.

[0072] Please refer to Figures 6-8 In some embodiments of the present application, the shell 31 includes a base 311 and a dustproof seat 312. The base 311 is formed with a first accommodating space 3131. The side wall of the base 311 is provided with a communication port 314 which communicates with the first accommodating space 3131. The dustproof seat 312 is arranged on the outer wall of the base 311 which is provided with the communication port 314. The dustproof seat 312 is formed with a second accommodating space 3132. The second accommodating space 3132 communicates with the first accommodating space 3131 to form an accommodating cavity 313. The dustproof seat 312 is provided with a first opening 3133 on the side away from the base 311. The base 311 is provided with a second opening 3134. The ejector pin 33 is inserted into the first accommodating space 3131. The trigger piece 341 extends from the first accommodating space 3131 through the communication port 314 and extends into the second accommodating space 3132.

[0073] In the present embodiment, the shell 31 includes the base 311 and the dustproof seat 312. The dustproof seat 312 is arranged on the side of the base 311. The first accommodating space 3131 in the base 311 and the second accommodating space 3132 in the dustproof seat 312 communicate with each other through the communication port 314 in the side wall of the base 311 to form the accommodating cavity 313. The ejector pin 33 and the sensing piece 342 of the detection mechanism 34 are arranged in the first accommodating space 3131 and the second accommodating space 3132, respectively. The trigger piece 341 of the detection mechanism 34 extends through the communication port 314 to connect with the ejector pin 33 and trigger the sensing piece 342. At this time, the communication port 314 can also guide and limit the movement of the trigger piece 341 and the ejector pin 33 to prevent the trigger piece 341 from being deviated.

[0074] Please refer to Figure 7 and Figure 8 In some embodiments of the present application, the dustproof seat 312 is provided with an extension 316 protruding from the top of the base 311, the extension 316 is provided with a dustproof cavity 317 and an avoiding opening communicating with the dustproof cavity 317, the avoiding opening and the first opening 3133 are located on the same side of the dustproof seat 312, the circuit board 32 is covered on the avoiding opening, and part of the components on the circuit board 32 is located on the surface of the circuit board 32 facing the dustproof cavity 317.

[0075] In the embodiment, the dustproof seat 312 includes a main body covered on the side of the base 311 and an extension 316 protruding from the top of the base 311, the circuit board 32 is covered on the surface of the dustproof seat 312 away from the base 311, and part of the circuit board 32 is covered on the extension 316. The extension 316 is provided with a dustproof cavity 317 and an avoiding opening communicating with the dustproof cavity 317, the avoiding opening and the first opening 3133 are located on the same side, the circuit board 32 is covered on the avoiding opening, and part of the components provided on the circuit board 32 is arranged in the dustproof cavity 317, so as to protect the components on the circuit board 32 and avoid the components from being contaminated by dust, oil stains and other impurities, thereby affecting the performance stability.

[0076] Optionally, the dustproof cavity 317 and the second accommodating space 3131 can be in communication with each other; optionally, the avoiding opening and the first opening 3133 can be arranged as an integrated opening, or can be two independent openings.

[0077] In some embodiments, the distance measuring module 30 is fixed on one side wall of the laser module 20, and the side of the laser module 20 is provided with a heat sink 40, at this time, the extension 316 can be covered on the surface of the heat sink 40.

[0078] Please refer to Figure 4 and Figure 5 In some embodiments of the present application, the extension 316 is provided with one of a limiting groove 41 and a limiting protrusion 318, and the mounting position for fixing the distance measuring module 30 is provided with the other one of the limiting groove 41 and the limiting protrusion 318; when the distance measuring module 30 is mounted on the mounting position, the limiting protrusion 318 is inserted into the limiting groove 41.

[0079] In the embodiment, the limiting protrusion 318 can be protruded from the extension 316, and the limiting groove 41 can be arranged on the mounting position for fixing the distance measuring module 30; or the limiting protrusion 318 can be protruded from the mounting position for fixing the distance measuring module 30, and the limiting groove 41 can be arranged on the extension 316. When the distance measuring module 30 is mounted on the mounting position, the limiting protrusion 318 is inserted into the limiting groove 41, so that the connection strength between the distance measuring module 30 and the laser 100 can be improved, and the distance measuring module 30 can be limited, thereby avoiding the distance measuring module 30 from being deviated due to external force, and affecting the detection accuracy.

[0080] It should be noted that in the embodiment, the distance measuring module 30 can be fixed on the shell 10 of the laser 100 or the laser module 20, and the limiting protrusion 318 or the limiting groove 41 can be arranged on the side wall of the shell 10 of the laser 100 or the laser module 20; in some embodiments, the laser module 20 can be lifted relative to the shell 10, and the heat sink 40 is arranged on the side of the laser 100, and at this time, the limiting protrusion 318 or the limiting groove 41 can also be arranged on the heat sink 40 installed on the side of the laser module 20, which is not limited here.

[0081] Please refer to Figure 7 and Figure 8 In some embodiments of the present application, the shell 31 is provided with a plug hole 315, the plug hole 315 is arranged opposite to the second opening 3134, and the thimble 33 can be inserted into the plug hole 315.

[0082] In this way, the plug hole 315 is arranged on the top wall of the accommodating cavity 313 to avoid the thimble 33, so that the thimble 33 can be inserted into the plug hole 315 at least when it rises, thereby reducing the volume of the distance measuring module 30 without the need to adapt the height of the accommodating cavity 313 to the thimble 33; and the arrangement of the plug hole 315 can also guide and limit the thimble 33 during the rising process. In addition, the thimble 33 can be inserted into the plug hole 315 only when it rises to a certain height, or the thimble 33 can always be inserted into the plug hole 315, which is not limited here.

[0083] Please refer to Figures 1-3 The present application also provides a laser 100, which comprises the distance measuring module 30 according to any one of the preceding embodiments, and the lower end surface of the thimble 33 of the distance measuring module 30 is not higher than the light outlet of the laser 100 when the thimble 33 is in the trigger position. The laser 100 provided by the present application is applied in laser processing equipment such as laser engraving machine, laser marking machine, laser cutting machine, etc. The laser 100 is used for emitting laser, which comprises a shell 10 and a laser module 20 arranged in the shell 10, and also comprises a conversion board for transmitting energy and signals, and structures such as heat dissipation module can also be arranged. In the laser processing equipment, in order to process the processing positions at different heights, the laser 100 as a whole can be lifted or the laser module 20 in the laser 100 can be lifted.

[0084] When the laser 100 as a whole is made to be liftable, the distance measuring module 30 can be arranged in the shell 10 or outside the shell 10; when the laser module 20 in the laser 100 is made to be liftable relative to the shell 10, the distance measuring module 30 can be fixed with the laser module 20 or other structures fixed on the laser module 20. It is only required that the lower end surface of the stylus 33 of the distance measuring module 30 is not higher than the light outlet of the laser 100 when the stylus 33 is in the trigger position.

[0085] With reference to Figure 9 and Figure 10 When distance measurement is required, the laser 100 or the laser module 20 is controlled to be lowered so as to lower the distance measuring module 30 together. After the stylus 33 abuts against the position to be processed, the laser 100 or the laser module 20 is continuously lowered to lower the distance measuring module 30, so that the stylus 33 is lifted into the accommodating cavity 313 until the stylus 33 is lifted to the trigger position. When the stylus 33 is lifted to the trigger position, the trigger piece 341 triggers the sensing piece 342. After the sensing piece 342 generates a sensing signal, the sensing signal can be transmitted to the control system through the circuit board 32. At this time, only the distance between the lower end surface of the stylus 33 and the light outlet of the laser module 20 or the laser focal point, and the lowering distance of the laser 100 or the laser module 20 are required to be known, so that the distance between the focal point of the laser module 20 and the position to be processed can be calculated. The distance between the lower end surface of the stylus 33 of the distance measuring module 30 and the light outlet of the laser module 20 or the laser focal point when the stylus 33 is in the trigger position can be set in advance. Therefore, after the sensing piece 342 is triggered, the laser module 20 can be controlled to move upward by a fixed distance, which is the distance between the lower end surface of the stylus 33 of the distance measuring module 30 and the laser focal point when the stylus 33 is in the trigger position, so as to ensure that the laser focal point falls on the position to be processed, and improve the processing precision. The lowering distance of the laser 100 or the laser module 20 can be obtained according to the working distance of the motor or the cylinder and the like driving member for driving the laser 100 or the laser module 20 to be lifted.

[0086] Since the laser 100 of the present application applies all the technical solutions of the foregoing embodiments, it has all the beneficial effects brought by the foregoing technical solutions, which will not be described herein.

[0087] Please refer to Figures 1-3 The laser 100 comprises a shell 10 and a laser module 20. An accommodating cavity is formed in the shell 10, and the bottom of the accommodating cavity has an opening. At least part of the laser module 20 is arranged in the accommodating cavity, and the laser module 20 is arranged to be liftable. The light outlet of the laser module 20 is arranged to be outward of the opening of the accommodating cavity. The distance measuring module 30 is arranged on the laser module 20 and close to the light outlet.

[0088] In the embodiment, the laser 100 comprises a housing 10 as a bearing and mounting base, the housing 10 is formed with a receiving cavity, and the bottom of the housing 10 is provided with an opening communicating with the receiving cavity. At least part of the laser module 20 is arranged in the receiving cavity, and the laser module 20 can be lifted. The laser module 20 can be always located in the receiving cavity, and only lifted in the receiving cavity, so that the light outlet of the laser module 20 is directed to the opening in the bottom of the housing 10 to emit laser outward. Alternatively, the laser module 20 can be lifted and moved in and out of the receiving cavity from the opening in the bottom of the housing 10, and the height of the laser module 20 can be adjusted to adjust the height of the laser focal point, so that the laser focal point can fall on the machining position.

[0089] A lifting module can be arranged in the receiving cavity, and the lifting module can be a screw rod transmission structure, a cylinder or a liquid cylinder pushing structure, a linear motor structure, a worm gear structure or a gear and rack structure, etc. The lifting module is in transmission connection with the laser module 20, so that the laser module 20 can be lifted by the lifting module.

[0090] The laser module 20 and the distance measuring module 30 are lifted by the lifting module to adjust the height position of the laser focal point, so that the laser 100 does not need to be lifted as a whole in the laser processing equipment, and the lifting process for adjusting the height of the laser focal point is more convenient.

[0091] The application also provides a laser processing equipment, which is provided with the laser 100 in any one of the above embodiments. The laser processing equipment can be a laser engraving machine, a laser marking machine, a laser cutting machine, etc. The structure of the laser 100 is the same as that of any one of the above embodiments, and will not be repeated here.

[0092] The laser processing equipment of the application applies all the technical solutions of the above embodiments, and at least has all the beneficial effects of the above technical solutions, which will not be repeated here.

[0093] The above only describes the preferred embodiments of the application, and does not limit the patent range of the application. Any equivalent structural transformation based on the application, the content of the application and the drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the application.

Claims

1. A distance measuring module, characterized in that, The application relates to a distance measuring module. The distance measuring module comprises a housing, a circuit board, a contact pin and a detection mechanism. The housing is provided with a containing cavity, a first opening and a second opening which are in communication with the containing cavity. The circuit board is arranged in the first opening. The contact pin is arranged in the second opening and partially arranged in the containing cavity. The contact pin has an initial position and a trigger position above the initial position.

2. The ranging module of claim 1, wherein, The detection mechanism is arranged in the containing cavity and comprises a trigger element and a sensing element.

3. The ranging module of claim 2, wherein the light source is a laser diode. The trigger element is connected with the contact pin.

4. The ranging module of claim 1, wherein the light source is a laser diode. The sensing element is arranged on the surface of the circuit board facing the containing cavity and is electrically connected with the circuit board. When the contact pin is in the trigger position, the trigger element triggers the sensing element. The distance measuring module further comprises a reset element arranged in the containing cavity and acting on the contact pin to make the contact pin have a tendency to keep in the initial position.

5. The ranging module of claim 1, wherein the light source is a laser diode. The reset element is an elastic element and is arranged between the trigger element and the top cavity surface of the containing cavity. The trigger element comprises a fixed part and a trigger part.

6. The ranging module of claim 5, wherein the light source is a laser diode. The fixed part is sleeved and fixed on the contact pin. The trigger part is connected with one end of the fixed part close to the circuit board and extends upward.

7. The ranging module of claim 6, wherein the light source is a laser diode. The sensing element has a transmitting end and a receiving end arranged oppositely. When the contact pin is in the trigger position, the trigger element interrupts the signal path between the transmitting end and the receiving end.

8. The distance measuring module as claimed in any one of claims 1 to 7, characterized in that The trigger element is provided with a screw hole. At least part of the outer surface of the contact pin is provided with external threads. The screw hole and the external threads are matched to make the trigger element and the contact pin be screw-connected. The housing comprises a base and a dustproof seat. The first containing space is formed in the base. The side wall of the base is provided with a communication port in communication with the first containing space. The dustproof seat is arranged on the outer wall of the base provided with the communication port. The second containing space is formed in the dustproof seat. The second containing space and the first containing space are in communication to form the containing cavity. The first opening is arranged on the side of the dustproof seat away from the base. The second opening is arranged on the base. The contact pin is arranged in the first containing space. The trigger element is arranged in the communication port from the first containing space and extends to the second containing space. The dustproof seat is provided with an extension part protruding from the top of the base. The extension part is provided with a dustproof cavity and an avoiding port in communication with the dustproof cavity. The avoiding port and the first opening are arranged on the same side of the dustproof seat. The circuit board is arranged in the avoiding port. Part of the components on the circuit board are arranged on the surface of the circuit board facing the dustproof cavity. The extension part is provided with one of a limiting groove and a limiting protrusion. The mounting position of the distance measuring module is provided with the other one of the limiting groove and the limiting protrusion. When the distance measuring module is arranged in the mounting position, the limiting protrusion is arranged in the limiting groove. The housing is provided with a plug-in hole in communication with the containing cavity. The plug-in hole is arranged opposite to the second opening. The contact pin can be arranged in the plug-in hole. The housing is provided with a limiting gap. At least part of the structure of the circuit board is arranged in the limiting gap.

9. A laser characterized by, The laser comprises the ranging module as claimed in any one of claims 1 to 8, and when the stylus of the ranging module is in the triggered position, the lower end surface of the stylus is not higher than the light outlet of the laser.

10. The laser of claim 9, wherein, The laser comprises: a housing, an accommodating cavity is formed in the housing, and the bottom of the accommodating cavity has an opening; a laser module, at least part of the laser module is arranged in the accommodating cavity, and the laser module is arranged to be liftable, the light outlet of the laser module faces outward from the opening, and the ranging module is arranged in the laser module and close to the light outlet.

11. A laser processing apparatus characterized by comprising: The laser processing equipment is provided with the laser as claimed in claim 9 or 10.

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