CN111151886B

CN111151886B - Marking device

Info

Publication number: CN111151886B
Application number: CN201911329319.8A
Authority: CN
Inventors: 王岱嵘; 段志国; 夏中良; 侯庭毅; 孔含
Original assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd; Qingdao Haier Special Refrigeration Electric Appliance Co Ltd
Current assignee: Qingdao Haier Refrigerator Co Ltd; Haier Smart Home Co Ltd; Qingdao Haier Special Refrigeration Electric Appliance Co Ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2022-04-29
Anticipated expiration: 2039-12-20
Also published as: CN111151886A

Abstract

The invention provides a marking device, comprising: marking a head; one end of the protective shell is connected with the laser emergent surface of the marking head; the telescopic cover is arranged at the other end of the protection shell and has a shape matched with the protection shell; and the telescopic mechanism is arranged on the protective shell and provided with a connecting rod connected with the telescopic cover, and the telescopic mechanism is configured to drive the telescopic cover to extend out through the connecting rod so that one end of the telescopic cover, which is far away from the protective shell, is closely attached to the surface of the region to be marked and is retracted through the connecting rod. The invention can enable one end of the telescopic cover far away from the protective shell to be closely attached to the surface of a region to be marked (namely the marking surface) in a flattening mode, thereby effectively avoiding smoke dust generated in the marking process from leaking out of the protective shell and the telescopic cover, ensuring the cleanliness of a marked product, and being suitable for processing occasions of products with higher requirements on the cleanliness of the internal environment, in particular to the processing occasions of household appliances (such as refrigerators).

Description

Marking device

Technical Field

The invention relates to the technical field of laser processing, in particular to a marking device.

Background

Laser marking technology is one of the largest application areas of laser processing. Laser marking is a marking method in which a workpiece is irradiated locally with high-energy-density laser to vaporize a surface layer material or to undergo a chemical reaction of color change, thereby leaving a permanent mark. Laser marking has been widely used for marking various products by virtue of its advantages of precision, space and time controllability, high efficiency and automation, etc.

However, in the prior art, the protective cover of the marking head of the laser marking device is usually fixed, and is difficult to be attached to the marking surface for flattening, so that smoke generated in the marking process can be leaked to the outside of the protective cover, and a processed product is polluted, so that the existing marking device cannot meet the processing occasion of a product with a high requirement on the cleanliness of the internal environment, such as the processing occasion of a household appliance (particularly a refrigerator).

Disclosure of Invention

In view of the above, the present invention has been developed to provide a marking device that overcomes or at least partially solves the above-mentioned problems.

One object of the present invention is to provide a marking device with a retractable cover structure, wherein the retractable cover is driven by a retractable mechanism to extend out to closely align with the surface of the region to be marked, so as to effectively prevent the leakage of smoke dust generated during the marking process.

A further object of the present invention is to reduce the impact force on the marking head, the retractable cover and the retractable mechanism, thereby providing effective protection.

Still another object of the present invention is to further avoid the leakage of the dust and to ensure the cleanliness of the marked product by disposing a dust absorption tube in the protective housing of the marking device to absorb the dust generated during marking.

In particular, the present invention provides a marking device comprising:

marking a head;

one end of the protective shell is connected with the laser emergent surface of the marking head;

the telescopic cover is arranged at the other end of the protection shell and has a shape matched with the protection shell; and

the telescopic mechanism is arranged on the protective shell and provided with a connecting rod connected with the telescopic cover, the telescopic mechanism is configured to drive the telescopic cover to extend out through the connecting rod so that one end of the telescopic cover, far away from the protective shell, is closely attached to the surface of the marking area, and drives the telescopic cover to retract through the connecting rod.

Optionally, the marking device further comprises:

and the buffer spring is arranged between the connecting rod of the telescopic mechanism and the telescopic cover.

Optionally, the marking device further comprises:

the L-shaped connecting piece is fixed on the telescopic cover; and

the plate-shaped connecting piece is fixed at the end part of the connecting rod of the telescopic mechanism; and is

The buffer spring is arranged between the L-shaped connecting piece and the plate-shaped connecting piece.

Optionally, the telescopic mechanism comprises a pneumatic telescopic mechanism and/or a hydraulic telescopic mechanism.

Optionally, a flexible filler strip is disposed at an end of the retractable cover away from the protective shell.

Optionally, the marking device further comprises:

one end of the dust suction pipe is fixed in the protective shell; and

and the suction device is connected with the other end of the dust collection pipe.

Optionally, the telescoping mechanism is disposed outside the protective housing;

the marking device further includes:

and the protective cover is arranged on the outer side of the protective shell and covers the telescopic mechanism.

Optionally, the protective cover is a concertina cover.

Optionally, the marking device further comprises:

the fixed bolster is connected with marking head and protective housing respectively for the one end of keeping away from scalable cover of protective housing is fixed to the laser emitting face of marking the head.

Optionally, the marking device further comprises:

and the sealing gasket is arranged between the laser emitting surface of the marking head and one end of the protective shell, which is far away from the telescopic cover.

In the marking device, one end of the protective shell is connected with the laser emergent surface of the marking head, the other end of the protective shell is provided with the adaptive telescopic cover, and the protective shell is also provided with a telescopic mechanism which can drive the telescopic cover to extend and retract through the connecting rod. Drive scalable cover through telescopic machanism and stretch out, can make the one end that scalable cover kept away from protective housing and treat to beat the surface of mark region (beat the mark face promptly) and closely paste with the mode that flattens neatly to effectively avoid beating the smoke and dust that the mark in-process produced to reveal outside protective housing and scalable cover, guarantee to beat the cleanliness factor of mark product. Therefore, the marking device can be suitable for the processing occasions of products with higher requirement on the cleanliness of the internal environment, in particular to the processing occasions of household appliances (such as refrigerators).

Furthermore, in the marking device, a buffer spring is arranged between the connecting rod of the telescopic mechanism and the telescopic cover. Through buffer spring, can reduce the impact force that mark head, scalable cover and telescopic machanism received when scalable cover is neat with marking the face and pasting to play effectual guard action to them, and can make scalable cover paste closely simultaneously and mark the face.

Furthermore, in the marking device, the dust suction pipe is arranged in the protective shell and used for sucking the smoke dust generated during marking, thereby further avoiding the leakage of the smoke dust and ensuring the cleanliness of the marked product.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic structural view of a marking device according to one embodiment of the present invention;

fig. 2 is a schematic structural view of a marking device according to another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Fig. 1 is a schematic structural view of a marking device 100 according to an embodiment of the present invention, and fig. 2 is a schematic structural view of the marking device 100 according to another embodiment of the present invention.

Referring to fig. 1 and 2, the marking device 100 may generally include a marking head 110, a protective housing 120, a retractable cover 130, and a retracting mechanism 140.

The marking head 110 includes a lens, and laser is emitted through a laser emitting surface 111 of the lens to perform laser marking on a region to be marked. One end of the protective housing 120 is connected to the laser emitting surface 111 of the marking head 110, and the other end is provided with a retractable cover 130. The protective housing 120 and the retractable cover 130 together form a smoke shield surrounding the laser emitting area of the marking head 110, which can isolate the smoke gas inside the cover from the environment outside the cover during laser marking. The shape of the protective housing 120 may be selected according to practical requirements, for example, the cross-sectional profile of the protective housing 120 may be set to be rectangular, circular, oval, etc., which may be specifically set according to the shape of the laser emitting surface 111 of the marking head 110 and/or the region to be marked, which is not particularly limited by the invention.

The retractable cover 130 has a shape adapted to the shield case 120, for example, when the cross-sectional profile of the shield case 120 is rectangular, the cross-sectional profile of the retractable cover 130 is also set to be rectangular. To facilitate the telescopic action of the telescopic cover 130, the telescopic cover 130 may be sleeved in the other end of the protection housing 120 away from the laser emitting surface 111. Of course, the retractable cover 130 may be disposed at the other end of the protective housing 120 away from the laser emitting surface 111 in other manners as long as the retractable movement of the retractable cover 130 is suitable, and the present invention is not particularly limited thereto.

The telescopic mechanism 140 is provided on the shield case 120 and has a link 141 connected to the telescopic cover 130. The telescopic mechanism 140 drives the telescopic cover 130 to extend through the connecting rod 141 so that one end of the telescopic cover 130 away from the protective shell 120 is closely aligned with the surface of the region to be marked (hereinafter, referred to as the marking surface), and drives the telescopic cover 130 to retract through the connecting rod 141. The telescoping mechanism 140 may be a pneumatic telescoping mechanism (specifically, a cylinder) and/or a hydraulic telescoping mechanism, etc.

According to the marking device 100 provided by the embodiment of the invention, the telescopic mechanism 140 drives the telescopic cover 130 to extend out, so that one end of the telescopic cover 130, which is far away from the protective shell 120, is closely and uniformly attached to the marking surface in a flattening manner, thereby effectively preventing smoke dust generated in the marking process from leaking out of the protective shell 120 and the telescopic cover 130 and ensuring the cleanliness of a marked product. Therefore, the marking device 100 of the present invention is suitable for processing products with high requirement on the cleanliness of the internal environment, especially for processing household appliances (such as refrigerators).

With continued reference to fig. 1 and 2, in one embodiment, the marking device 100 may further include a buffer spring 150. The buffer spring 150 is disposed between the link 141 of the telescopic mechanism 140 and the telescopic cover 130. When the retractable cover 130 extends out to be flush with the marking surface, the buffer spring 150 can reduce the impact force on the marking head 110, the retractable cover 130 and the retractable mechanism 140, so as to effectively protect the marking head, the retractable cover 130 can be tightly attached to the marking surface, and the sealing and isolating effects of the smoke and dust protective cover formed by the protective shell 120 and the retractable cover 130 are better. The number of the buffer springs 150 may be 1 or more, and may be selected according to the actual buffer requirement. Preferably, the number of the buffer springs 150 is 2, and the 2 buffer springs 150 are symmetrically arranged with respect to the connecting rod 141, so that the impact force can be absorbed in a balanced manner, and the protection effect is better.

With continued reference to fig. 1 and 2, in one embodiment, the marking device 100 may further include an L-shaped connector 161 and a plate-shaped connector 162. An L-shaped link 161 is fixed to the retractable cover 130, and a plate-shaped link 162 is fixed to an end of the link 141 of the retracting mechanism 140. In this case, the buffer spring 150 is disposed between the L-shaped link 161 and the plate-shaped link 162. Specifically, the buffer spring 150 may be fitted over the screw between the L-shaped connector 161 and the plate-shaped connector 162. Through adopting specific connecting piece, make the connection between scalable cover 130 and the telescoping device more firm, power transmission is more even, makes scalable cover 130 can paste with marking the face more steadily neat, and the buffering protection effect is better.

With continued reference to fig. 1 and 2, in one embodiment, an end of the retractable cover 130 distal from the protective shell 120 may be provided with a flexible backing strip 131. The soft pad strip 131 may be made of soft material such as rubber, sponge, etc. Through setting up this soft filler strip 131, stretch out at scalable cover 130 and beat the flat neat time of beating with beating the mark face, can protect more effectively and beat the mark face and not hurt, can guarantee simultaneously that the tip of scalable cover 130 and beat the neat effect of pasting of mark face.

With continued reference to fig. 1 and 2, in one embodiment, the marking device 100 may further include a suction tube 170 and a suction device (not shown). One end of the suction pipe 170 is fixed in the protective casing 120, and the other end is connected to a suction device. Specifically, a through hole may be provided on the protective housing 120, and one end of the dust suction pipe 170 may extend into the protective housing 120 through the through hole and be fixed to the protective housing 120 by a fixing member. The dust suction pipe 170 may have a hose structure, so that the marking device 100 can be freely moved according to the processing requirement, thereby enhancing the processing flexibility. The suction device can adopt common dust suction equipment, such as a suction fan and the like. It should be noted that the suction device and its specific placement are not shown in fig. 1 and 2 so as not to obscure the understanding of the present invention, and those skilled in the art will recognize that the suction device may be placed in any suitable location that will ensure that the marking device 100 can perform the marking process. When marking head 110 during operation, suction device starts, inhales the gas in the smoke and dust protection casing that protective housing 120 and scalable cover 130 constitute through dust absorption pipe 170 to the smoke and dust that produces when will marking is inhaled away, has further avoided the smoke and dust to reveal, guarantees to mark the cleanliness factor of product.

In the embodiment of the present invention, the specific position of the telescopic mechanism 140 on the protective housing 120 is not limited on the premise of not affecting the marking operation. Preferably, in one embodiment, referring to fig. 1 and 2, the telescoping mechanism 140 is disposed outside of the protective housing 120, in which case the marking device 100 may further include a protective cover 180. The protective cover 180 is disposed outside the protective housing 120 and covers the telescoping mechanism 140, so as to protect the telescoping mechanism 140 from being damaged, prevent the telescoping mechanism 140 from being interfered by the outside, and ensure the telescoping mechanism 140 to work normally.

Further, the protective cover 180 may employ a bellows cover. The organ cover is a flexible organ type protective cover and has the advantages of small compression and long stroke. By adopting the organ cover, the telescopic mechanism 140 can be stretched and contracted along with the telescopic cover 130, so that the application is more flexible, and the telescopic mechanism 140 is better protected.

With continued reference to fig. 1, in one embodiment, the marking device 100 may further include a stationary bracket 191. The fixing bracket 191 is connected to the marking head 110 and the protective housing 120, respectively, and is used for fixing one end of the protective housing 120 away from the retractable cover 130 to the laser emitting surface 111 of the marking head 110. Through fixed bolster 191, can install protection casing 120 to the laser emitting surface 111 of the camera lens of marking head 110 fixedly, solve the unable fixed mounting protection casing's of marking head camera lens department problem among the prior art.

In a specific embodiment, the fixing bracket 191 may be an L-shaped bracket, and two portions of the L-shaped bracket perpendicular to each other are fixed to the side surfaces of the protective housing 120 and the marking head 110 adjacent to the laser emitting surface 111, respectively, so as to align the protective housing 120 at the laser emitting surface 111 of the lens of the marking head 110 by the side surface fixing. Further, one or more reinforcing plates may be disposed between two portions of the L-shaped bracket perpendicular to each other, so as to reinforce the strength of the L-shaped bracket and improve the stability of the fixed shield case 120.

With continued reference to fig. 1, in one embodiment, the marking device 100 may further include a sealing gasket 192. A sealing gasket 192 is disposed between the laser exit surface 111 of the marking head 110 and an end of the protective housing 120 distal from the retractable cover 130. The sealing gasket 192 may be made of, for example, rubber, silicone, or the like. The contact surface between the laser emitting surface 111 of the marking head 110 and the protective housing 120 is sealed by a sealing gasket 192, thereby further preventing the leakage of the fumes generated during marking.

While various components and structures of the marking device 100 according to the embodiment of the present invention are described above, it can be understood by those skilled in the art that the marking device 100 may further include a marking control system, an optical positioning mechanism (such as a CCD camera), and the like, which are well known in the art and are not described herein. In addition, the marking device 100 according to the embodiment of the present invention may be fixedly disposed on the worktable, or may be mounted on a robot arm (e.g., a six-axis robot), and the robot arm drives the marking head 110 of the marking device 100 to perform an automatic moving process.

According to any one or a combination of multiple optional embodiments, the embodiment of the present invention can achieve the following advantages:

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. A marking device, comprising:

marking a head;

the telescopic mechanism is arranged on the protective shell and provided with a connecting rod connected with the telescopic cover, the telescopic mechanism is configured to drive the telescopic cover to extend out through the connecting rod so that one end, away from the protective shell, of the telescopic cover is closely and uniformly attached to the surface of an area to be marked, and the connecting rod drives the telescopic cover to retract;

wherein, marking device still includes:

the L-shaped plate-shaped connecting piece is fixed on the telescopic cover;

a plate-shaped connector fixed to an end of a link of the telescopic mechanism; and

a buffer spring disposed between the L-shaped connector and the plate-shaped connector;

the number of the buffer springs is multiple, and the buffer springs are symmetrically arranged relative to the connecting rod;

the two mutually perpendicular parts of the L-shaped fixing support are respectively connected with the marking head and the protective shell and used for pasting and fixing one end of the protective shell far away from the telescopic cover to the laser emergent surface of the marking head; and

one or more reinforcing plates disposed between two mutually perpendicular portions of the L-shaped fixing bracket.

2. The marking device of claim 1,

the telescopic mechanism comprises a pneumatic telescopic mechanism and/or a hydraulic telescopic mechanism.

3. The marking device of claim 1,

one end of the telescopic cover, which is far away from the protective shell, is provided with a soft cushion strip.

4. The marking device of claim 1, further comprising:

one end of the dust suction pipe is fixed in the protective shell; and

and the suction device is connected with the other end of the dust suction pipe.

5. The marking device of claim 1,

the telescopic mechanism is arranged on the outer side of the protective shell;

the marking device further includes:

6. The marking device of claim 5,

the protective cover is an organ cover.

7. The marking device of claim 1, further comprising: