Anti-collision mechanism and anti-collision swing welding laser head

Abstract

The invention relates to an anti-collision mechanism and an anti-collision swing welding laser head. The anti-collision mechanism comprises an annular conductive rubber strip, a zebra strip matching piece and a signal triggering device, the annular conductive adhesive tape is provided with an insulating layer and a conductive layer which are annularly arranged and arranged at an interval; the zebra strip matching piece is arranged right opposite to the annular conductive adhesive tape; when the anti-collision swing welding laser head works, the top end of the zebra strip matching piece abuts against the bottom end of the annular conductive rubber strip. And the signal triggering device is electrically connected with the annular conductive rubber strip and the zebra strip matching piece respectively. The anti-collision mechanism and the anti-collision swing welding laser head have the advantages that collision can be automatically detected, and the anti-risk capacity is improved.

Description

Technical Field

[0001] The invention relates to the field of high-precision welding, and in particular to an anti-collision mechanism and an anti-collision swing welding laser head. Background Art

[0002] With the development of modern welding technology, higher requirements are placed on automated welding technology and precision. During the welding process, the laser welding head may be bumped; the existing automated welding device may cause the welding head to shift when it is bumped, and the laser head may be burned by continuous light when it is shifted. The existing automated welding device cannot simultaneously meet the requirements of laser welding for high precision and risk resistance. Summary of the invention

[0003] Based on this, the purpose of the present invention is to provide an anti-collision mechanism and an anti-collision swing welding laser head, which have the advantages of being able to automatically detect collisions and improve risk resistance.

[0004] An anti-collision mechanism comprises: an annular conductive rubber strip, a zebra strip matching piece and a signal triggering device; the annular conductive rubber strip is provided with an insulating layer and a conductive layer which are arranged in an annular manner and are arranged at intervals; the zebra strip matching piece is arranged directly opposite to the annular conductive rubber strip; when the anti-collision swing welding laser head is working, the top end of the zebra strip matching piece abuts against the bottom end of the annular conductive rubber strip; the signal triggering device is electrically connected to the annular conductive rubber strip and the zebra strip matching piece respectively.

[0005] The anti-collision mechanism described in the present invention is used on a welding laser head and is arranged between the welding head mechanism and the laser emitting mechanism of the welding laser head. It can detect collisions through an annular conductive rubber strip and a zebra strip matching piece. Since the annular conductive rubber strip is provided with an insulating layer and a conductive layer arranged in an annular manner and arranged at intervals, when the zebra strip matching piece and the annular conductive rubber strip are in contact, the conductive layer at the contact position is turned on; when the welding laser head collides with the welding head mechanism during operation, the zebra strip matching piece and the annular conductive rubber strip are partially disengaged, and the conductive layer at the position of the detached contact is disconnected, so that the signal trigger device sends a stop signal to prevent continuous light from burning the laser head. And the direction of the collision can be determined by the position of the disconnected conductive layer on the annular conductive rubber strip, which facilitates the retreat of the laser head.

[0006] Furthermore, the signal triggering device is an intermediate relay having a plurality of contacts; and each conductive layer on the annular conductive rubber strip is connected to the contacts of the signal triggering device in a one-to-one correspondence.

[0007] A collision-proof swing welding laser head, characterized in that it includes: a laser emitting port is provided at one end of the laser emitting mechanism, a light inlet is provided at one end of the welding head mechanism, and the laser emitting port is directly opposite to the light inlet; the annular conductive rubber strip surrounds the laser emitting port and is arranged at the laser emitting port on the laser emitting mechanism, the zebra strip matching piece is directly opposite to the annular conductive rubber strip, surrounds the light inlet and is arranged at the light inlet on the welding head mechanism; the signal trigger device is connected to the laser emitting mechanism signal.

[0008] Furthermore, the anti-collision mechanism also includes a reset spring, and the reset spring is sleeved with the annular conductive rubber strip; when the anti-collision swing welding laser head works normally, one end of the reset spring abuts against the laser emitting mechanism, and the other end abuts against the welding head mechanism.

[0009] Furthermore, it also includes a rotational reset device; the rotational reset device includes a floating disk and a plurality of reset fittings; one end of the reset spring is connected to the welding head mechanism, and the other end is connected to the floating disk, and the floating disk faces the laser emitting mechanism; a through hole is provided in the center of the floating disk, and the floating disk is sleeved with an annular conductive rubber strip, which can slide up and down between the laser emitting mechanism and the welding head mechanism; a plurality of reset slots are provided on the side of the floating disk facing the mechanism emitting mechanism, and the reset fittings are provided under the laser emitting mechanism; when the anti-collision swing welding laser head is working, the reset spring pushes the floating disk to be close to the lower part of the laser emitting mechanism, and the reset fittings are respectively inserted into the corresponding reset slots.

[0010] Furthermore, the reset slots are arranged at non-equidistant intervals; and the intervals between the reset fittings correspond one-to-one to the intervals between the reset slots.

[0011] Furthermore, the anti-collision mechanism also includes an alarm device, and the alarm device is connected to the floating disk or the resetting fitting.

[0012] Furthermore, the welding head mechanism includes an inner lens barrel, a zoom rail, a focusing lens, a protective lens and a laser head nozzle; a light inlet is provided on one side of the inner lens barrel, and the other side is connected to the laser head nozzle; the zoom rail is arranged in the inner lens barrel, and the focusing lens is adjustably arranged on the zoom rail; the protective lens is arranged in the inner lens barrel, between the focusing lens and the laser head nozzle.

[0013] Furthermore, it also includes a protective rubber sleeve, which is respectively connected to the welding head mechanism and the laser emitting mechanism and wraps the anti-collision mechanism.

[0014] Furthermore, an air cavity is provided in the protective rubber sleeve, and the air cavity is filled with protective gas.

[0015] For better understanding and implementation, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an anti-collision swing welding laser head according to an embodiment of the present invention;

[0017] Figure 2 It is a schematic diagram of the structure of the anti-collision mechanism according to an embodiment of the present invention;

[0018] Figure 3 A schematic diagram of an annular conductive rubber strip according to an embodiment of the present invention;

[0019] Figure 4 The figure is a three-dimensional schematic diagram of a floating disk according to an embodiment of the present invention.

[0020] In the accompanying drawings, the technical features indicated by the reference numerals are as follows:

[0021] 1. Laser emitting mechanism; 2. Welding head mechanism; 201. Inner lens barrel; 202. Zoom rail; 203. Focus lens; 204. Protective lens; 205. Laser head nozzle; 3. Anti-collision mechanism; 301. Annular conductive rubber strip; 302. Zebra strip fittings; 303. Rotary reset device; 3031. Floating disk; 3032. Several reset fittings; 3031a. Reset slot; 4. Protective rubber sleeve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "vertical direction", "up", "down", "horizontal", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a heat-conducting connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example

[0026] See also Figure 1 The embodiment of the present application provides an anti-collision mechanism and an anti-collision swing welding laser head. The anti-collision swing welding laser head of the present application includes a laser emitting mechanism 1, a welding head mechanism 2 and an anti-collision mechanism 3. The laser emitting mechanism 1 is used to provide welding laser; the welding head mechanism 2 is used to adjust and emit the welding laser provided by the laser emitting mechanism 1; a laser emitting port is provided at one end of the laser emitting mechanism 1, and a light inlet is provided at one end of the welding head mechanism 2, and the laser emitting port is directly opposite to the light inlet; the anti-collision mechanism 3 is arranged between the laser emitting mechanism 1 and the welding head mechanism 2 around the laser emitting port and the light inlet.

[0027] The anti-collision mechanism 3 includes an annular conductive rubber strip 301, a zebra strip matching piece 302 and a signal triggering device. The annular conductive rubber strip 301 is provided with an insulating layer and a conductive layer arranged in an annular manner and spaced apart; the annular conductive rubber strip 301 is arranged at the laser emitting port on the laser emitting mechanism 1 around the laser emitting port, the zebra strip matching piece 302 is directly opposite to the annular conductive rubber strip 301, and the light inlet is arranged at the light inlet on the welding head mechanism 2 around the light inlet. When the anti-collision swing welding laser head of the present application works normally, the bottom end of the annular conductive rubber strip 301 abuts against the top end of the zebra strip matching piece 302; the signal triggering device is electrically connected to the annular conductive rubber strip 301 and the zebra strip matching piece 302 respectively; the signal triggering device is also connected to the laser emitting mechanism 1 signal.

[0028] When the welding head mechanism 2 collides, the welding head mechanism 2 deviates, causing the zebra strip fitting 302 to deviate; since the zebra strip fitting 302 is in contact with the annular conductive rubber strip 301, when the zebra strip fitting 302 deviates, one side of the zebra strip fitting 302 in the deviating direction falls off and contacts with the annular conductive rubber strip 301, and the falling contact part is disconnected, triggering the signal triggering device, sending a stop signal to the laser emitting mechanism 1, shutting down the laser emitting mechanism 1, and preventing the laser from burning the deviated welding head mechanism 2; and the annular conductive rubber strip 301 can play a certain buffering role.

[0029] In some embodiments, the signal trigger device is an intermediate relay, and the intermediate relay has multiple contacts; each conductive layer on the annular conductive rubber strip 301 is connected one-to-one with the contacts of the signal trigger device. When one side of the offset direction of the zebra strip fitting 302 contacts the annular conductive rubber strip 301, the conductive layer of the contact part is disconnected, and the corresponding contact is disconnected. Since each conductive layer corresponds one-to-one with the contacts of the signal trigger device, it is possible to determine the disconnection position of the annular conductive rubber strip 301, and then determine the offset direction of the welding head mechanism 2, and then determine the direction in which the welding head mechanism 2 will collide. After determining the direction in which the welding head mechanism 2 will collide, the anti-collision swing welding laser head can drive the welding head mechanism 2 to retreat in a direction away from the collision position to prevent further collision from damaging the device.

[0030] Furthermore, the anti-collision mechanism 3 also includes a reset spring, which is sleeved with an annular conductive rubber strip 301; when the anti-collision swing welding laser head works normally, one end of the reset spring abuts against the laser emitting mechanism 1, and the other end abuts against the welding head mechanism 2.

[0031] In some embodiments, the anti-collision mechanism 3 further includes a rotational reset device 303. The rotational reset device 303 includes a floating disk 3031 and a plurality of reset fittings 3032, and there are at least three reset fittings 3032. One end of the reset spring is connected to the welding head mechanism 2, and the other end is connected to the floating disk 3031, and the floating disk faces the laser emitting mechanism 1; a through hole is provided in the center of the floating disk 3031, and the floating disk 3031 is sleeved with an annular conductive rubber strip 301, which can slide up and down between the laser emitting mechanism 1 and the welding head mechanism 2; a plurality of reset slots 3031a corresponding to the reset fittings 3032 are provided on one side of the floating disk 3031 facing the laser emitting mechanism, and each reset slot 3031a is arranged around the laser emitting mechanism at non-equidistant intervals. The reset fittings 3032 are arranged on the laser emitting mechanism 1 opposite to the floating plate 2031, and the intervals between the reset fittings 3032 correspond to the intervals between the reset slots 3031a one by one; when the anti-collision swing welding laser head is working, the spring pushes the floating plate 3031 to be close to the lower part of the laser emitting mechanism 1, and the reset fittings 3032 are respectively inserted into the corresponding reset slots 3031a.

[0032] In some embodiments, the anti-collision mechanism 3 further includes an alarm device, which is connected to the floating plate 3031 or the reset fitting 3032; when the reset fitting 3032 is not inserted into the corresponding reset slot 3031a, the alarm device continuously alarms.

[0033] When the welding head mechanism 2 collides and produces rotational deviation, the floating plate 3031 also rotates; since the reset fitting 3032 is fixedly arranged on the laser emitting mechanism 1, the reset fitting 3032 slips out of the reset slot 3031a, and the alarm device sounds an alarm. Since the reset slots 3031a are not equidistantly spaced around, the reset fitting 3032 can only be inserted into the corresponding reset slot 3031a, so that the floating plate 3031 can only be matched with the reset fitting 3032 at a specific angle; when the welding head mechanism 2 is not reset to a specific angle, the floating plate 3031 and the reset fitting 3032 remain separated, and the alarm device continues to sound an alarm until the welding head mechanism 2 is reset and then stops sounding.

[0034] The welding head mechanism 2 of the embodiment of the present application includes an inner lens barrel 201, a zoom rail 202, a focusing lens 203, a protective lens 204 and a laser head nozzle 205. The light inlet is arranged on one side of the inner lens barrel 201, and the other side of the inner lens barrel 201 is connected to the laser head nozzle 205. The zoom rail 202 is arranged in the inner lens barrel 201, and the focusing lens 203 is located in the inner lens barrel 201 and is adjustably arranged on the zoom rail 202, so as to achieve the focusing of the welding head mechanism 2. The protective lens 204 is arranged in the inner lens barrel 201, and is arranged between the focusing lens 203 and the laser head nozzle 205.

[0035] In some embodiments, the inner lens barrel 201 of the embodiment of the present application is made of metal and also serves as the zebra stripe fitting 302. In this case, the zebra stripe fitting 302 and the inner lens barrel 201 are integrally arranged, and there is no need to additionally arrange the zebra stripe fitting 302.

[0036] In some embodiments, the anti-collision swing welding laser head of the present application further includes a protective rubber sleeve 4, which is respectively connected to the welding head mechanism 2 and the laser emission mechanism 1, and wraps the anti-collision mechanism 3; an air cavity is provided in the protective rubber sleeve 4, and a protective gas is filled in the air cavity, and the protective gas can be an inert gas or air. The protective rubber sleeve 4 prevents dust from entering the laser emission mechanism 1 and the welding head mechanism 2 and plays a role of buffering.

[0037] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, and the present invention is also intended to include these modifications and modifications.

Claims

1. An anti-collision mechanism for an anti-collision swing welding laser head, characterized in that: include: Annular conductive rubber strip, zebra strip matching parts and signal triggering device; The annular conductive rubber strip is provided with insulating layers and conductive layers arranged in an annular manner and spaced apart from each other; The zebra strip matching piece is arranged opposite to the annular conductive rubber strip; when the anti-collision swing welding laser head is working, the top end of the zebra strip matching piece abuts against the bottom end of the annular conductive rubber strip; the signal triggering device is electrically connected to the annular conductive rubber strip and the zebra strip matching piece respectively.

2. The anti-collision mechanism according to claim 1, characterized in that: The signal trigger device is an intermediate relay having a plurality of contacts; each conductive layer on the annular conductive rubber strip is connected to the contacts of the signal trigger device in a one-to-one correspondence.

3. A collision-proof swing welding laser head, characterized in that: It comprises: a laser emitting mechanism, a welding head mechanism and the anti-collision mechanism described in any one of claims 1-2; a laser emitting port is provided at one end of the laser emitting mechanism, a light inlet is provided at one end of the welding head mechanism, and the laser emitting port is directly opposite to the light inlet; the annular conductive rubber strip surrounds the laser emitting port and is arranged at the laser emitting port on the laser emitting mechanism, the zebra strip matching piece is directly opposite to the annular conductive rubber strip, surrounds the light inlet and is arranged at the light inlet on the welding head mechanism; the signal trigger device is connected to the laser emitting mechanism signal.

4. The anti-collision swing welding laser head according to claim 3 is characterized in that: The anti-collision mechanism also includes a reset spring, and the reset spring is sleeved with the annular conductive rubber strip; when the anti-collision swing welding laser head works normally, one end of the reset spring abuts against the laser emitting mechanism, and the other end abuts against the welding head mechanism.

5. The anti-collision swing welding laser head according to claim 4 is characterized in that: It also includes a rotational reset device; the rotational reset device includes a floating disk and a plurality of reset fittings; one end of the reset spring is connected to the welding head mechanism, and the other end is connected to the floating disk, and the floating disk faces the laser emitting mechanism; a through hole is provided in the center of the floating disk, and the floating disk is sleeved with an annular conductive rubber strip, which can slide up and down between the laser emitting mechanism and the welding head mechanism; a plurality of reset slots are provided on the side of the floating disk facing the mechanism emitting mechanism, and the reset fittings are provided under the laser emitting mechanism; when the anti-collision swing welding laser head is working, the reset spring pushes the floating disk to be close to the lower part of the laser emitting mechanism, and the reset fittings are respectively inserted into the corresponding reset slots.

6. The anti-collision swing welding laser head according to claim 5, characterized in that: The reset slots are arranged in a non-equidistant manner; the intervals between the reset fittings correspond to the intervals between the reset slots.

7. The anti-collision swing welding laser head according to claim 6, characterized in that: The anti-collision mechanism also includes an alarm device, which is connected to the floating disk or the resetting fitting.

8. The anti-collision swing welding laser head according to claim 3 is characterized in that: The welding head mechanism includes an inner lens barrel, a zoom guide rail, a focusing lens, a protective lens and a laser head nozzle; a light inlet is provided on one side of the inner lens barrel, and the other side is connected to the laser head nozzle; the zoom guide rail is arranged in the inner lens barrel, and the focusing lens is adjustably arranged on the zoom guide rail; the protective lens is arranged in the inner lens barrel, and is arranged between the focusing lens and the laser head nozzle.

9. The anti-collision swing welding laser head according to claim 8, characterized in that: It also includes a protective rubber sleeve, which is respectively connected to the welding head mechanism and the laser emitting mechanism and wraps the anti-collision mechanism.

10. The anti-collision swing welding laser head according to claim 9, characterized in that: An air cavity is provided in the protective rubber sleeve, and the air cavity is filled with protective gas.

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