Multidirectional anti-collision protection device

Abstract

The invention discloses a multidirectional anti-collision protection device, and relates to the technical field of laser cutting and welding. Comprising a swing arm rocker, the front end of the swing arm rocker is a round rod, the tail end of the swing arm rocker is a circular truncated cone, a back pressure spring is arranged on the side face of the circular truncated cone, and a spring mounting groove is formed in the back face of the swing arm rocker. The multidirectional anti-collision protection device has the advantages that 360-degree multidirectional no-dead-corner anti-collision is realized, hard collision of the working laser head is changed into soft contact, the influence on other parts in collision accidents is eliminated, the defect that the working laser head is easy to damage due to collision is overcome, a large amount of maintenance and replacement cost is saved for enterprises, more time is saved, and the working efficiency is improved. Production is not delayed any more due to collision accidents; the problems that a laser head is easy to collide with a plate, a cutting torch is easy to abrade, leapfrog and the like of laser equipment are solved; internal parts are high in precision, sensitive in induction and rapid in response, and safety is ensured through contact, pressure induction and multiple signal alarm; the installation is simple and convenient, the installation plate is self-adaptive, and all models can be adapted.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting and welding, and particularly relates to a multi-directional anti-collision protection device. Background Art

[0002] Currently, the only protection measure used in the industry is a hollow screw for protecting the laser head. The laser emitting end is separated from the laser head main body and connected by the hollow screw to weaken the overall rigidity. When impacted, the hollow screw breaks and the emitting end falls off to prevent further damage to the laser head main body.

[0003] During the actual use of the hollow screw, a certain amount of force is required to break the hollow screw, which belongs to a hard impact and causes irreversible damage to the laser head, lifting rod, lifting guide rail, lead screw, motor, and mechanical parts of each axis of the machine tool. If the emitting end disconnects during cutting and welding, the smoke and dust concentration is very high and directly enters the laser head cavity, causing pollution. The lens is often burned later, and the manufacturer cannot completely solve this problem. In addition, replacing the anti-collision screw requires the machine to be stopped, delaying the cutting work. Moreover, replacing the anti-collision screw is relatively delicate and professional, and it is difficult for ordinary operators to replace. The laser head is often impacted, which is likely to cause damage to the laser head. It can only prevent collisions in the horizontal direction and cannot prevent collisions in the Z-axis direction. The stress deformation, springback, and thermal deformation of the plate cause high-speed upward impact on the laser head, and the hollow anti-collision screw is ineffective.

[0004] Currently, problems such as easy collision of the laser head with the plate, easy abrasion of the cutting nozzle, and frog jumping are common in the laser cutting and laser welding industries. After the laser head is impacted and damaged, it can only be replaced or repaired. If the laser machine supplier is far away from the customer using the machine, only waiting for the engineer to come to repair and replace the parts will greatly affect the accuracy of the laser machine and the normal production of the factory. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages existing in the prior art, and a multi-directional anti-collision protection device is proposed.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The multi-directional anti-collision protection device includes:

[0008] A swing arm rocker, the front end of which is set as a round rod, the tail end is set as a round table, a counter-pressure spring is arranged on the side surface of the round table, and a tension spring is arranged inside a spring installation groove opened on the back surface of the swing arm rocker;

[0009] A main installation body, a cylindrical installation groove is opened at the tail end of the main installation body, the swing arm rocker is arranged inside the cylindrical installation groove, and the round rod penetrates through the front groove wall of the cylindrical installation groove and extends outwards; the edge side of the front end surface of the round table is set as an arc surface and is matched with the inner wall of the cylindrical installation groove;

[0010] A mounting ring groove is formed on the front end face of the main mounting body. A plurality of mounting jacks are equidistantly formed on the back groove wall of the mounting ring groove. A high-precision position detection switch is fixedly installed inside the mounting jack. The high-precision position detection switch contacts the large circular surface of the round table of the swing arm rocker and is triggered. A displacement induction circuit board for installing the high-precision position detection switch is fixedly installed inside the mounting ring groove.

[0011] A front mounting plate for blocking the mounting ring groove is fixedly installed at the front end of the main mounting body, and a rear mounting plate is fixedly installed at its tail end.

[0012] As a preferred embodiment of the present invention: A mounting seat one is fixedly connected to the top of one side of the outer wall at the tail end of the main mounting body, and a pressure sensor is fixedly installed inside the mounting seat one.

[0013] As a preferred embodiment of the present invention: A mounting seat two is fixedly connected to the top of the other side of the outer wall at the tail end of the main mounting body, and a pressure relief valve is fixedly installed inside the mounting seat two.

[0014] As a preferred embodiment of the present invention: A mounting seat three is fixedly connected to the top of one side of the outer wall at the front end of the main mounting body, and a switch connector is fixedly installed inside the mounting seat three.

[0015] As a preferred embodiment of the present invention: A mounting seat four is fixedly connected to the top of one side of the outer wall in the middle of the main mounting body, and an air connection joint is fixedly installed inside the mounting seat four.

[0016] As a preferred embodiment of the present invention: A front laser head mounting plate is fixedly installed at the front end of the swing arm rocker, and a working laser head is arranged at the front end of the front laser head mounting plate.

[0017] As a preferred embodiment of the present invention: A rear fixed mounting plate is fixedly installed on the back of the rear mounting plate, and a plurality of positioning bolts are fixedly installed on the back of the rear fixed mounting plate.

[0018] As a preferred embodiment of the present invention: A dust-proof net clamping groove is formed on the outer wall of the round rod of the swing arm rocker, and a metal dust-proof net is clamped inside the dust-proof net clamping groove.

[0019] On the basis of the foregoing solution: A dust-proof net cover plate is arranged on the front surface of the metal dust-proof net, and the dust-proof net cover plate is fixedly installed at the front end of the front mounting plate.

[0020] The beneficial effects of the present invention are:

[0021] The multi-directional anti-collision protection device provides 360° multi-directional collision protection without dead angles, converting the hard impact on the working laser head into a soft contact, eliminating the impact on other parts in a collision accident, solving the problem of easy damage to the working laser head during collisions, saving a large amount of maintenance and replacement costs for enterprises, and also saving more time, so that collision accidents no longer delay production; it solves the pain points of laser equipment: problems such as the laser head being prone to hitting the plate, the cutting nozzle being prone to wear, and frog jumping are no longer problems; the internal parts have high precision, sensitive induction, rapid response, contact and pressure sensing, and multiple signal alarms to ensure safety; the installation is simple and convenient, with an adaptive mounting plate, and all models can be adapted. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic perspective view of the overall assembly of the present invention Figure 1 ;

[0023] Figure 2 is a schematic perspective view of the overall assembly of the present invention Figure 2 ;

[0024] Figure 3 is of the present invention Figure 1 schematic sectional structure view of a part Figure 1 ;

[0025] Figure 4 is of the present invention Figure 3 schematic enlarged sectional structure view of part A in the present invention;

[0026] Figure 5 is of the present invention Figure 1 schematic sectional structure view of a part Figure 2 ;

[0027] Figure 6 is of the present invention Figure 5 schematic enlarged sectional structure view of part B in the present invention;

[0028] Figure 7 is of the present invention Figure 1 schematic sectional structure view of a part Figure 3 ;

[0029] Figure 8 is of the present invention Figure 7 schematic enlarged sectional structure view of part C in the present invention;

[0030] Figure 9 is a schematic diagram of the force analysis of the front and back sides of the present invention in case of collision;

[0031] Figure 10 is a schematic diagram of the force analysis of the side of the present invention in case of collision.

[0032] In the figure: 1. Working laser head; 2. Laser head connection plate; 3. Front laser head mounting plate; 4. Front mounting plate; 5. Main mounting body; 6. Rear fixed mounting plate; 7. Positioning bolt; 8. Rear mounting plate; 9. Swing arm rocker; 10. Metal dust-proof net; 11. Dust-proof net cover plate; 12. Displacement induction circuit board; 13. High-precision position detection switch; 14. Sealing ring; 15. Spring installation groove; 16. Tension spring; 17. Back pressure spring; 18. Mounting seat one; 19. Pressure sensor; 20. Wire protection sleeve; 21. Mounting seat two; 22. Pressure relief valve; 23. Mounting seat three; 24. Switch connector; 25. Mounting seat four; 26. Air connection head. Detailed implementation manners

[0033] The technical solutions of the present invention will be further described in detail below in conjunction with the specific implementation manners.

[0034] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and cannot be understood as a limitation to the present invention.

[0035] The multi-directional anti-collision protection device, such as Figures 1 to 8 shown, includes: a swing arm rocker 9 and a main mounting body 5 that cooperate with each other. The front end of the swing arm rocker 9 is fixedly installed with a front laser head mounting plate 3 through a plurality of bolts. The front end of the front laser head mounting plate 3 is fixedly installed with a laser head connection plate 2, and the front end of the laser head connection plate 2 is fixedly installed with a working laser head 1.

[0036] A front mounting plate 4 for plugging the mounting ring groove is provided at the front end of the main mounting body 5. A plurality of grooves are equidistantly opened on the side of the front end of the front mounting plate 4. A threaded hole one is opened on the back wall of the groove, and the threaded hole one penetrates through the front mounting plate 4 and extends into the main mounting body 5. A bolt one is threadedly installed inside the threaded hole one.

[0037] A rear mounting plate 8 is provided at the tail end of the main mounting body 5. A rear fixed mounting plate 6 is provided on the back of the rear mounting plate 8. A plurality of through holes are equidistantly opened on the back of the rear fixed mounting plate 6. The through holes penetrate through the rear mounting plate 8. A threaded hole two is opened at the position corresponding to the through holes at the tail end of the main mounting body 5. A positioning bolt 7 is threadedly installed inside the threaded hole two and the through hole.

[0038] The front laser head mounting plate 3 and the rear fixed mounting plate 6 have the same size, and a plurality of mounting holes are correspondingly opened on the front surfaces of both, so that various models of working laser heads 1 can be adaptively installed without changing the original structure.

[0039] The front end of the swing arm rocker 9 is set as a round rod, and the tail end is set as a frustum of a cone. The large circular surface of the frustum of the cone is connected to the round rod, and its diameter is set to be larger than the end face diameter of the round rod. A counter-pressure spring 17 is arranged on the side surface of the frustum of the cone, and a spring installation groove 15 is opened on the back surface of the swing arm rocker 9. A tension spring 16 is arranged inside the spring installation groove 15.

[0040] As Figure 4 shown, a cylindrical installation groove is opened at the tail end of the main installation body 5. The swing arm rocker 9 is arranged inside the cylindrical installation groove, and the round rod penetrates through the front groove wall of the cylindrical installation groove and extends outwards. The rear mounting plate 8 is used to cover the cylindrical installation groove, and the front end face of the rear mounting plate 8 is in contact with the tension spring 16 and the counter-pressure spring 17.

[0041] A sealing installation groove is opened on the side of the front groove wall of the cylindrical installation groove, and a sealing ring 14 is fixedly installed inside the sealing installation groove. The sealing ring 14 is in contact with the large circular surface of the frustum of the cone of the swing arm rocker 9; the side of the front end face of the frustum of the cone is set as an arc surface, which cooperates with the inner wall of the cylindrical installation groove. There is a certain distance between the front mounting plate 4 and the front laser head mounting plate 3. When the working laser head 1 collides, the swing arm rocker 9 will not be restricted by the cylindrical installation groove and the front laser head mounting plate 3 and cannot deflect.

[0042] As Figure 4 shown, an installation ring groove is opened on the front end face of the main installation body 5. A plurality of installation jacks are equidistantly opened on the back groove wall of the installation ring groove. The installation jacks are communicated with the cylindrical installation groove, and a high-precision position detection switch 13 is fixedly installed inside the installation jacks. The high-precision position detection switch 13 is in contact with the large circular surface of the frustum of the cone of the swing arm rocker 9 and is triggered; a displacement induction circuit board 12 for installing the high-precision position detection switch 13 is fixedly installed inside the installation ring groove. When the swing arm rocker 9 has a position offset, the high-precision position detection switch 13 is turned off, and the displacement induction circuit board 12 forms an open circuit.

[0043] On one side of the top of the outer wall at the front end of the main installation body 5, a third installation seat 23 is fixedly connected. A switch connector 24 is fixedly installed inside the third installation seat 23; As Figure 8 shown, a wire through groove communicated with the installation ring groove is opened at the bottom end of the third installation seat 23. The wire inside the switch connector 24 is connected to the displacement induction circuit board 12 through the wire through groove.

[0044] As Figure 6 shown, on one side of the top of the outer wall at the tail end of the main installation body 5, a first installation seat 18 is fixedly connected. A pressure sensor 19 is fixedly installed inside the first installation seat 18. A wire protection sleeve 20 is fixedly installed at the top end of the pressure sensor 19. The pressure sensor 19 is used to detect the pressure inside the cylindrical installation groove, and the wire protection sleeve 20 protects the wire of the pressure sensor 19

[0045] On one side of the top of the outer wall of the middle part of the main mounting body 5, there is a fixedly connected mounting seat four 25. Inside the mounting seat four 25, there is a fixedly installed air connection nozzle 26. The air connection nozzle 26 is connected to an external air compressor through an air pipe, continuously inputting compressed air into the columnar mounting groove to maintain stable air pressure.

[0046] On the other side of the top of the outer wall at the tail end of the main mounting body 5, there is a fixedly connected mounting seat two 21. Inside the mounting seat two 21, there is a fixedly installed pressure relief valve 22. When the air pressure inside the columnar mounting groove exceeds the preset upper limit, it automatically relieves pressure to ensure the stability of the overall device during operation.

[0047] On the outer wall of the round rod of the main swing arm rocker 9, there is a dust-proof net clamping groove. Inside the dust-proof net clamping groove, there is a clamped metal dust-proof net 10. On the front of the metal dust-proof net 10, there is a dust-proof net cover plate 11. The front end of the metal dust-proof net 10 is fitted with the dust-proof net cover plate 11 and fixed to the front mounting plate 4 through bolts, preventing dust from entering and accumulating during operation and affecting the normal operation of the equipment.

[0048] On the front of the front mounting plate 4, there is a cover plate mounting groove. On the back groove wall of the cover plate mounting groove, there is a dust-proof net mounting groove. The dust-proof net cover plate 11 is fixedly installed inside the cover plate mounting groove, and the metal dust-proof net 10 is installed inside the dust-proof net mounting groove. And the depth of the dust-proof net mounting groove is greater than the thickness of the metal dust-proof net 10, facilitating the small-amplitude movement of the metal dust-proof net 10 along with the swing arm rocker 9 and improving its protection ability; and the metal dust-proof net 10 is made of double-layer steel wire mesh, effectively resisting the influence of high temperature during the operation of the overall device and ensuring its service life and protection ability.

[0049] Working principle:

[0050] Refer to Figures 1 to 8 , and assemble this device as shown in the figure;

[0051] The rear fixed mounting plate 6 is connected to an industrial robot or a laser machine tool, and the working laser head 1 is connected to the front laser head mounting plate 3, completing the installation and connection of the entire anti-collision system with the laser machine tool or the industrial robot; the air connection nozzle 26 is connected to an air pipe, continuously inputting compressed air to maintain stable internal air pressure, so as to further press the swing arm rocker 9, and adjusting the magnitude of the internally input air pressure according to the external mounting load to adjust the impact force sensing sensitivity; the four high-precision position detection switches 13 are installed on the displacement sensing circuit board 12 and installed on the main mounting body 5. Among them, the high-precision position detection switch 13 passes through the hole on the main mounting body 5 and contacts the swing arm rocker 9, and at the same time presses the switch to trigger.

[0052] Example 1, refer to Figure 9, when the working laser head 1 generates front and back collisions, first, the swing arm rocker 9 retracts and compresses the tension spring 16 and the back pressure spring 17 to play a buffering role. At the same time, the high-precision position detection switch 13 rebounds, the displacement induction circuit board 12 disconnects and sends a signal; since the displacement of the swing arm rocker 9 will cause the internal air pressure to change, the pressure sensor 19 will also send an alarm signal synchronously. Multiple signals alarm, making its movement stop immediately to prevent greater damage to the working laser head 1.

[0053] When it generates a bias impact up and down, since the side wall (inclined plane) of the round table part of the swing arm rocker 9 contacts the back pressure spring 17, the swing arm rocker 9 can make an up or down swing displacement under the elastic force of the back pressure spring 17, so as to change the hard impact into a soft impact, better buffering the impact force, preventing the impact from damaging the working laser head 1, and at the same time, multiple signals alarm and the device stops running immediately.

[0054] Embodiment 2, referring to Figure 10 , when the working laser head 1 generates a side collision, the impact received by the middle mounting part will cause the swing arm rocker 9 to tilt and compress the tension spring 16 and the back pressure spring 17 to buffer the impact, and its effect is the same as that of the up and down bias impact in the front collision in Embodiment 1.

[0055] When a side up and down collision occurs, the torque generated by the collision will cause the working laser head 1 to drive the swing arm rocker 9 to have a rotational displacement. At the same time, after the swing arm rocker 9 has a rotational displacement, it will disengage from the positioning screw and be pushed up by the positioning screw. At the same time, the four high-precision position detection switches 13 sense the displacement of the swing arm rocker 9 and immediately send a signal, and the device stops working and waits for inspection and reset.

[0056] Embodiment 3, when the working laser head 1 generates a bottom impact, during the operation and use of the laser device, the working laser head 1 needs to approach the workpiece to be cut. Therefore, in a collision accident, the impact from below is the most likely to occur. In this collision protection device, when a bottom impact occurs, the effect is the same as that of the up and down bias impact in the front collision in Embodiment 1.

[0057] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. Multi-directional anti-collision protection device, characterized in that: include: The swing arm rocker (9) has a front end configured as a round rod and a rear end configured as a round table, a side of the round table is provided with a back pressure spring (17), and a spring installation groove (15) is provided on the back of the swing arm rocker (9), and a tension spring (16) is provided inside the spring installation groove (15); A main mounting body (5), wherein a cylindrical mounting groove is formed at the rear end of the main mounting body (5), the swing arm rocker (9) is arranged inside the cylindrical mounting groove, and the round rod penetrates the front end groove wall of the cylindrical mounting groove and extends outward; the side of the front end surface of the truncated cone is arranged as an arc surface, which cooperates with the inner wall of the cylindrical mounting groove; The front end surface of the main mounting body (5) is provided with a mounting ring groove, and the back groove wall of the mounting ring groove is provided with a plurality of mounting sockets at equal intervals, and a high-precision position detection switch (13) is fixedly installed inside the mounting socket, and the high-precision position detection switch (13) contacts the large circular surface of the truncated cone of the swing arm rocker (9) and is triggered; and a displacement sensing circuit board (12) for mounting the high-precision position detection switch (13) is fixedly installed inside the mounting ring groove; A front mounting plate (4) for sealing the mounting ring groove is fixedly mounted on the front end of the main mounting body (5), and a rear mounting plate (8) is fixedly mounted on the rear end thereof.

2. The multi-directional anti-collision protection device according to claim 1, characterized in that: A mounting seat (18) is fixedly connected to the top of one side of the outer wall at the rear end of the main mounting body (5), and a pressure sensor (19) is fixedly installed inside the mounting seat (18).

3. The multi-directional anti-collision protection device according to claim 1, characterized in that: A second mounting seat (21) is fixedly connected to the top of the other side of the outer wall of the rear end of the main mounting body (5), and a pressure relief valve (22) is fixedly installed inside the second mounting seat (21).

4. The multi-directional anti-collision protection device according to claim 1, characterized in that: A mounting seat three (23) is fixedly connected to the top of one side of the front end outer wall of the main mounting body (5), and a switch connector (24) is fixedly installed inside the mounting seat three (23).

5. The multi-directional anti-collision protection device according to claim 1, characterized in that: A mounting seat four (25) is fixedly connected to the top of one side of the middle outer wall of the main mounting body (5), and a gas pipe connector (26) is fixedly installed inside the mounting seat four (25).

6. The multi-directional anti-collision protection device according to claim 1, characterized in that: A front laser head mounting plate (3) is fixedly mounted on the front end of the swing arm rocker (9), and a working laser head (1) is arranged on the front end of the front laser head mounting plate (3).

7. The multi-directional anti-collision protection device according to claim 1, characterized in that: A rear fixed mounting plate (6) is fixedly mounted on the back side of the rear mounting plate (8), and a plurality of positioning bolts (7) are fixedly mounted on the back side of the rear fixed mounting plate (6).

8. The multi-directional anti-collision protection device according to claim 1, characterized in that: The outer wall of the round rod of the swing arm rocker (9) is provided with a dustproof net slot, and a metal dustproof net (10) is clamped inside the dustproof net slot.

9. The multi-directional anti-collision protection device according to claim 8, characterized in that: A dustproof net cover plate (11) is provided on the front side of the metal dustproof net (10), and the dustproof net cover plate (11) is fixedly mounted on the front end of the front mounting plate (4).

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