Multidirectional anti-collision protection device

Abstract

The utility model discloses a multidirectional anti-collision protection device which comprises a swing arm rocker, a round rod is arranged at the front end of the swing arm rocker, a circular truncated cone is arranged at the tail end of the swing arm rocker, a back pressure spring is arranged on the side face of the circular truncated cone, and a spring installation 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] This utility model relates to the field of laser cutting and welding technology, and in particular to a multi-directional anti-collision protection device. Background Technology

[0002] Currently, the only protective measure used in the industry is a hollow screw to protect the laser head. This screw separates the laser head emitter from the main body and connects them to the laser head body, thus reducing the overall rigidity. In the event of an impact, the hollow screw breaks, the emitter falls off, and the main body of the laser head is prevented from being further damaged.

[0003] In practical use, hollow screws require a certain force to break, which is considered a hard impact and causes irreversible damage to the laser head, lifting rod, lifting guide rail, lead screw, motor, and machine tool axes. If the emitter breaks during cutting and welding, the dust concentration is very high and directly enters the laser head cavity, causing pollution and frequently burning lenses later, which the manufacturer cannot completely eliminate. In addition, replacing anti-collision screws requires machine downtime, delaying cutting work, and replacing anti-collision screws is a delicate and professional task that is difficult for ordinary operators. Frequent impacts to the laser head can easily damage it. It only provides anti-collision protection in the horizontal direction, not in the Z-axis direction. The hollow anti-collision screws are ineffective when the stress deformation, warping, and thermal deformation of the sheet metal impact the laser head at high speed.

[0004] Currently, the laser cutting and laser welding industries commonly suffer from problems such as laser heads easily colliding with plates, easily wearing down the cutting nozzle, and "frog jumping" (a type of laser head movement). When the laser head is impacted, it damages both the laser head and machine tool components, requiring replacement or repair. If the laser machine tool supplier is located far from the customer, they must wait for an engineer to come to their location for repairs and parts replacement, significantly impacting the precision of the laser machine tool and normal factory production. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a multi-directional anti-collision protection device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Multi-directional anti-collision protection device, including:

[0008] The rocker arm has a round rod at the front end and a frustum at the rear end. A counter-pressure spring is provided on the side of the frustum, and a spring mounting groove is provided on the back of the rocker arm. A tension spring is provided inside the spring mounting groove.

[0009] The main mounting body has a cylindrical mounting groove at its tail end. The rocker arm is located inside the cylindrical mounting groove, and the round rod passes through the front wall of the cylindrical mounting groove and extends outward. The side of the front face of the truncated cone is set as an arc surface, which cooperates with the inner wall of the cylindrical mounting groove.

[0010] The front end face of the main mounting body is provided with a mounting ring groove, and the back wall of the mounting ring groove is provided with a plurality of mounting holes at equal intervals. A high-precision position detection switch is fixedly installed inside the mounting holes. The high-precision position detection switch contacts the large circular surface of the frustum of the rocker arm and is triggered. A displacement sensing circuit board for installing the high-precision position detection switch is fixedly installed inside the mounting ring groove.

[0011] The front end of the main mounting body is fixedly mounted with a front mounting plate that seals the mounting ring groove, and the rear end is fixedly mounted with a rear mounting plate.

[0012] As a preferred embodiment of this utility model: a mounting base is fixedly connected to the top of one side of the outer wall of the tail end of the main mounting body, and a pressure sensor is fixedly installed inside the mounting base.

[0013] As a preferred embodiment of this utility model: a second mounting base is fixedly connected to the top of the other side of the outer wall of the tail end of the main mounting body, and a pressure relief valve is fixedly installed inside the second mounting base.

[0014] As a preferred embodiment of this utility model: a mounting base three is fixedly connected to the top of one side of the outer wall of the front end of the main mounting body, and a switch connector is fixedly installed inside the mounting base three.

[0015] As a preferred embodiment of this utility model: a mounting base four is fixedly connected to the top of one side of the outer wall of the middle part of the main mounting body, and an air pipe head is fixedly installed inside the mounting base 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 arm, and a working laser head is provided at the front end of the front laser head mounting plate.

[0017] As a preferred embodiment of this utility model: a rear 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 mounting plate.

[0018] As a preferred embodiment of this utility model: the outer wall of the round rod of the rocker arm is provided with a dustproof mesh slot, and a metal dustproof mesh is engaged inside the dustproof mesh slot.

[0019] Based on the aforementioned scheme: a dustproof mesh cover is provided on the front side of the metal dustproof mesh, and the dustproof mesh cover is fixedly installed on the front end of the front mounting plate.

[0020] The beneficial effects of this utility model are as follows:

[0021] This multi-directional anti-collision protection device provides 360° multi-directional collision protection without blind spots, transforming the hard impact of the working laser head into soft contact. This eliminates the impact on other parts in the event of an impact, solving the problem of easy damage to the working laser head due to collisions. It saves enterprises a lot of maintenance and replacement costs, and also saves time, ensuring that accidental impacts do not delay production. It eliminates the pain points of laser equipment: laser head collisions with plates, easy abrasion of the cutting nozzle, and frog-jumping problems. The internal parts are of high precision, with sensitive and rapid response, contact and pressure sensing, and multiple signal alarms to ensure safety. Installation is simple and convenient, with an adaptive mounting plate that is compatible with all models. Attached Figure Description

[0022] Figure 1 Schematic diagram of the three-dimensional structure of the overall assembly of this utility model Figure 1 ;

[0023] Figure 2 Schematic diagram of the three-dimensional structure of the overall assembly of this utility model Figure 2 ;

[0024] Figure 3 This utility model Figure 1 Schematic diagram of partial cross-section structure Figure 1 ;

[0025] Figure 4 This utility model Figure 3 A magnified schematic diagram of the local structure at point A;

[0026] Figure 5 This utility model Figure 1 Schematic diagram of partial cross-section structure Figure 2 ;

[0027] Figure 6 This utility model Figure 5 A magnified view of the structure at point B in the middle;

[0028] Figure 7 This utility model Figure 1 Schematic diagram of partial cross-section structure Figure 3 ;

[0029] Figure 8 This utility model Figure 7 A magnified schematic diagram of the local structure at point C;

[0030] Figure 9 This is a schematic diagram of the force analysis when the front and back sides of this utility model collide.

[0031] Figure 10 This is a schematic diagram of the force analysis of a side collision of this utility model.

[0032] In the diagram: 1. Working laser head; 2. Laser head connecting 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 arm; 10. Metal dustproof mesh; 11. Dustproof mesh cover plate; 12. Displacement sensing circuit board; 13. High-precision position detection switch; 14. Sealing ring; 15. Spring mounting groove; 16. Tension spring; 17. Counter-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. Gas pipe connector. Detailed Implementation

[0033] The technical solution of this utility model will be further described in detail below with reference to specific embodiments.

[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0035] Multi-directional anti-collision protection devices, such as Figures 1 to 8 As shown, it includes: a swing arm rocker arm 9 and a main mounting body 5 that cooperate with each other. The front end of the swing arm rocker arm 9 is fixedly mounted with a front laser head mounting plate 3 by multiple bolts. The front end of the front laser head mounting plate 3 is fixedly mounted with a laser head connecting plate 2. The front end of the laser head connecting plate 2 is fixedly mounted with a working laser head 1.

[0036] The front end of the main mounting body 5 is provided with a front mounting plate 4 with a sealing mounting ring groove. Multiple grooves are equally spaced on the side of the front end of the front mounting plate 4. A threaded hole is provided on the back wall of the groove. The threaded hole penetrates the front mounting plate 4 and extends into the interior of the main mounting body 5. A bolt is installed in the internal thread of the threaded hole.

[0037] The rear end of the main mounting body 5 is provided with a rear mounting plate 8, and the back of the rear mounting plate 8 is provided with a rear fixed mounting plate 6. Multiple through holes are equidistantly opened on the back of the rear fixed mounting plate 6, and the through holes penetrate the rear mounting plate 8. A threaded hole 2 is opened at the position of the through hole at the rear end of the main mounting body 5. Positioning bolts 7 are installed in the internal threads of the threaded hole 2 and the through hole.

[0038] The front laser head mounting plate 3 and the rear fixed mounting plate 6 are the same size, and both have multiple mounting holes on their front sides, which can accommodate various models of working laser heads 1 without changing the original structure.

[0039] The front end of the rocker arm 9 is a round rod, and the rear end is a frustum. The large circular surface of the frustum is connected to the round rod, and its diameter is larger than the end diameter of the round rod. A counter-pressure spring 17 is provided on the side of the frustum, and a spring mounting groove 15 is provided on the back of the rocker arm 9. A tension spring 16 is provided inside the spring mounting groove 15.

[0040] like Figure 4 As shown, the tail end of the main mounting body 5 is provided with a cylindrical mounting groove, the rocker arm 9 is set inside the cylindrical mounting groove, and the round rod passes through the front wall of the cylindrical mounting groove and extends outward. The rear mounting plate 8 is used to cover the cylindrical mounting 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 mounting groove is provided on the side of the front wall of the cylindrical mounting groove. A sealing ring 14 is fixedly installed inside the sealing mounting groove. The sealing ring 14 fits against the large circular surface of the frustum of the swing arm rocker arm 9. The side of the front face of the frustum is set as an arc surface, which cooperates with the inner wall of the cylindrical mounting groove. A certain distance is provided 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 arm 9 will not be restricted by the cylindrical mounting groove and the front laser head mounting plate 3, and will not be unable to deflect.

[0042] like Figure 4 As shown, the front end face of the main mounting body 5 is provided with a mounting ring groove, and the back wall of the mounting ring groove is provided with multiple mounting holes at equal intervals. The mounting holes are connected to the cylindrical mounting groove, and a high-precision position detection switch 13 is fixedly installed inside the mounting holes. The high-precision position detection switch 13 contacts the large circular surface of the frustum of the rocker arm 9 and is triggered. A displacement sensing circuit board 12 for installing the high-precision position detection switch 13 is fixedly installed inside the mounting ring groove. When the rocker arm 9 shifts position, the high-precision position detection switch 13 is turned off, and the displacement sensing circuit board 12 forms an open circuit.

[0043] A mounting base 23 is fixedly connected to the top of one side of the front outer wall of the main mounting body 5, and a switch connector 24 is fixedly installed inside the mounting base 23; such as Figure 8 As shown, the bottom end of the mounting base 23 has a wire passage groove that communicates with the mounting ring groove, and the wires inside the switch connector 24 are connected to the displacement sensing circuit board 12 through the wire passage groove.

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

[0045] Mounting base 4 25 is fixedly connected to the top of one side of the outer wall of the main mounting body 5. An air pipe head 26 is fixedly installed inside the mounting base 4 25. The air pipe head 26 is connected to an external air compressor through an air pipe to continuously input compressed air into the cylindrical mounting groove to maintain stable air pressure.

[0046] Mounting base 21 is fixedly connected to the top of the other side of the outer wall of the main mounting body 5. A pressure relief valve 22 is fixedly installed inside the mounting base 21. When the air pressure inside the cylindrical mounting groove exceeds the preset upper limit, it will automatically release pressure to ensure the stability of the overall device operation.

[0047] The outer wall of the main swing arm rocker arm 9 is provided with a dustproof net slot, and a metal dustproof net 10 is inserted into the inside of the dustproof net slot. A dustproof net cover plate 11 is provided on the front of the metal dustproof net 10. The front end of the metal dustproof net 10 is attached to the dustproof net cover plate 11 and is fixed to the front mounting plate 4 by bolts to prevent smoke and dust from entering and accumulating during operation and use, so as to affect the normal operation of the equipment.

[0048] The front mounting plate 4 has a cover plate mounting groove on its front side, and a dustproof net mounting groove is provided on the back wall of the cover plate mounting groove. The dustproof net cover plate 11 is fixedly installed inside the cover plate mounting groove, and the metal dustproof net 10 is installed inside the dustproof net mounting groove. The depth of the dustproof net mounting groove is greater than the thickness of the metal dustproof net 10, which makes it easier for the metal dustproof net 10 to move slightly with the rocker arm 9, thereby improving its protective ability. In addition, the metal dustproof net 10 is made of double-layer steel wire mesh, which effectively resists the high temperature of the whole device during operation, ensuring its service life and protective ability.

[0049] Working principle:

[0050] Reference Figures 1 to 8 Assemble the device as shown in the figure;

[0051] The rear fixed mounting plate 6 is connected to the industrial robot or 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 industrial robot; the air pipe connector 26 is connected to the air pipe, continuously inputting compressed air to maintain stable internal air pressure, so as to further compress the swing arm rocker arm 9, and adjust the internal input air pressure according to the external installation load to adjust the impact force sensing sensitivity; four high-precision position detection switches 13 are installed on the displacement sensing circuit board 12 and on the main mounting body 5, wherein the high-precision position detection switches 13 pass through the holes on the main mounting body 5 and contact the swing arm rocker arm 9, and at the same time, the switch is pressed down to trigger.

[0052] Example 1, refer to Figure 9When the working laser head 1 collides with the front and back sides, the swing arm 9 retracts and compresses the tension spring 16 and the counter-pressure spring 17 to buffer the impact. At the same time, the high-precision position detection switch 13 springs back, the displacement sensing circuit board 12 disconnects and sends a signal. Since the displacement of the swing arm 9 will change the internal air pressure, the pressure sensor 19 will also send an alarm signal simultaneously. Multiple alarm signals will cause the movement to stop immediately to prevent greater damage to the working laser head 1.

[0053] When it experiences an offset impact from above or below, the side wall (sloping surface) of the truncated cone portion of the swing arm 9 contacts the counter-pressure spring 17, allowing the swing arm 9 to swing up or down under the elastic force of the counter-pressure spring 17. This transforms the hard impact into a soft impact, thus better buffering the impact force and preventing damage to the working laser head 1. Simultaneously, multiple alarm signals are triggered, and the equipment immediately stops operating.

[0054] Example 2, refer to Figure 10 When the working laser head 1 experiences a side collision, the impact on the central mounting part will cause the rocker arm 9 to tilt and compress the tension spring 16 and the counter-pressure spring 17 to buffer the impact. Its effect is the same as the upper and lower offset impact effect in the frontal collision in Embodiment 1.

[0055] When a collision occurs on the side, the torque generated by the collision will cause the working laser head 1 to rotate and displace the swing arm 9. After the swing arm 9 rotates and displaces, it will disengage from the positioning screw and be lifted by the positioning screw. At the same time, the four high-precision position detection switches 13 sense the displacement of the swing arm 9 and send a signal. The equipment stops working and waits for inspection and reset.

[0056] In Example 3, when the working laser head 1 experiences a bottom impact, during the operation of the laser equipment, the working laser head 1 needs to be close to the workpiece being cut. Therefore, in an impact 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 the effect of the top and bottom offset impact in the frontal collision in Example 1.

[0057] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. Multidirectional anti-collision protection device, characterized in that, The utility model relates to a kind of swing arm rocker, comprising: Swing arm rocker (9), the front end is provided as round bar, tail end is provided as circular table, the side of circular table is provided with counter-pressure spring (17), and the back of swing arm rocker (9) is opened with spring installation slot (15), the inside of spring installation slot (15) is provided with tension spring (16); Main mounting body (5), the tail end of main mounting body (5) is opened with cylindrical installation slot, swing arm rocker (9) is arranged in the inside of cylindrical installation slot, and round bar penetrates the front end slot wall of cylindrical installation slot and extends outward;The edge of circular table front end surface is provided as circular arc surface, and the inner wall of cylindrical installation slot is matched with each other; The front end surface of main mounting body (5) is opened with installation ring slot, the back groove wall of installation ring slot is equidistantly opened with multiple installation insertion hole, high-precision position detection switch (13) is fixedly installed in the inside of installation insertion hole, high-precision position detection switch (13) is contacted with the large circular surface of circular table of swing arm rocker (9) and is triggered;Displacement sensing circuit board (12) for installing high-precision position detection switch (13) is fixedly installed in the inside of installation ring slot; The front end of main mounting body (5) is fixedly installed with front mounting plate (4) that blocks installation ring slot, and the tail end is fixedly installed with rear mounting plate (8).

2. The multidirectional anti-collision protection device of claim 1, wherein: One side top of the outer wall of the tail end of main mounting body (5) is fixedly connected with mounting seat one (18), and pressure sensor (19) is fixedly installed in the inside of mounting seat one (18).

3. The multidirectional anti-collision protection device of claim 1, wherein: The other side top of the outer wall of the tail end of main mounting body (5) is fixedly connected with mounting seat two (21), and pressure relief valve (22) is fixedly installed in the inside of mounting seat two (21).

4. The multidirectional impact protection device of claim 1, wherein: One side top of the outer wall of the front end of main mounting body (5) is fixedly connected with mounting seat three (23), and switch connector (24) is fixedly installed in the inside of mounting seat three (23).

5. The multidirectional impact protection device of claim 1, wherein: One side top of the outer wall of the middle of main mounting body (5) is fixedly connected with mounting seat four (25), and air connection pipe head (26) is fixedly installed in the inside of mounting seat four (25).

6. The multidirectional impact protection device of claim 1, wherein: The front end of swing arm rocker (9) is fixedly installed with front laser head mounting plate (3), and working laser head (1) is arranged at the front end of front laser head mounting plate (3).

7. The multidirectional anti-collision protection device of claim 1, wherein: The back of rear mounting plate (8) is fixedly installed with rear fixed mounting plate (6), and multiple positioning bolts (7) are fixedly installed on the back of rear fixed mounting plate (6).

8. The multidirectional impact protection device of claim 1, wherein: Dustproof net card slot is opened in the outer wall of round bar of swing arm rocker (9), and metal dustproof net (10) is clamped in the inside of dustproof net card slot.

9. The multidirectional anti-collision protection device of claim 8, wherein: Dustproof net cover plate (11) is arranged on the front of metal dustproof net (10), and dustproof net cover plate (11) is fixedly installed on the front end of front mounting plate (4).

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