A closed-type laser engraving machine

Abstract

The present invention relates to the technical field of laser engraving, and particularly relates to a closed laser engraving machine, which includes an engraving machine body and a base. A laser engraving head is provided on one side of the engraving machine body. A lifting outer shell is slidably installed up and down outside the laser engraving head. A positioning member is fixedly installed inside the lifting outer shell. The shape of the positioning member matches the contour of the lower end surface of the lifting outer shell. A sliding member is slidably installed up and down below the positioning member. A limiting column is vertically installed on the base. The sliding member and the positioning member are connected to each other through a plurality of elastic members. The side view projection shape of the elastic member is a rhombus. A limiting block is provided on the side of the elastic member closest to the limiting column facing the limiting column. In the present invention, by providing a sliding member below the lifting outer shell, when there are obstacles below during the downward movement of the lifting outer shell, the continuous downward movement of the lifting outer shell can be restricted, and production accidents can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of laser engraving, and in particular to a closed laser engraving machine. Background Art

[0002] Laser engraving machine is an advanced equipment that uses laser to engrave the material to be engraved. During the engraving process, the laser is generated by the laser, transmitted by the reflector and irradiated onto the processed object through the focusing mirror, so that the surface of the processed object is subjected to strong heat energy and the temperature increases sharply, so that the point is quickly melted or vaporized due to the high temperature. In conjunction with the running trajectory of the laser head, the purpose of processing is achieved;

[0003] During the operation of the laser engraving machine, the engraving position needs to be enclosed by a shell (the lifting shell in this application) to prevent the dust or harmful gas generated during the engraving process from spreading. Usually, the shell is slidably installed on one side of the laser engraving machine and is opened or closed by controlling the lifting of the shell. There is a risk of pinching the operator during the up and down movement of the shell. Summary of the invention

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a closed laser engraving machine, which can effectively solve the problem that the laser engraving machine housing in the prior art is slidably installed on one side of the laser engraving machine, and is opened or closed by controlling the lifting of the housing, and there is a risk of pinching the operator during the up and down movement of the housing.

[0006] Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The present invention provides a closed laser engraving machine, comprising an engraving machine body and a base, wherein a laser engraving head is arranged on one side of the engraving machine body, a lifting shell is installed on the outer side of the laser engraving head so as to slide up and down, a positioning member is fixedly installed horizontally inside the lifting shell, the shape of the positioning member matches the contour of the lower end surface of the lifting shell, and a sliding member is installed below the positioning member so as to slide up and down;

[0009] A limiting column is vertically installed on the base, and the sliding member and the positioning member are interconnected by multiple elastic members. The side view projection shape of the elastic member is a rhombus. An elastic member closest to the limiting column is provided with a limiting block on one side of the limiting column, and the limiting block is used to be stuck on the limiting column when the elastic member is squeezed.

[0010] Further, a helical tooth is provided on one side of the limit post, and a helical groove matching the helical tooth is provided on the limit block. When the limit block moves towards the limit post, the helical groove is stuck outside the helical tooth to limit the downward movement of the lifting outer shell.

[0011] Further, a sealing gasket is provided on the lower end surface of the sliding member. The sealing gasket is hollow inside. An airbag is provided on the other side of the elastic member closest to the limit post. The airbag is fixedly installed below the positioning member. A connecting pipe is provided at the tail of the airbag, and the other end of the connecting pipe communicates with the inside of the sealing gasket.

[0012] Further, limit plates are fixedly installed at the bent portions on both sides of the elastic member, and the limit plates respectively abut against the sides of the airbag and the limit block.

[0013] Further, two groups of dust suction components are slidably installed on the base. The two groups of dust suction components are respectively located on both sides of the laser engraving head. The dust suction component includes a dust suction outer shell. A guide plate is fixedly installed at the upper end of the dust suction outer shell. A sliding inclined groove is provided on the guide plate. A guide pulley is fixedly installed on the inner wall of the lifting outer shell. During the downward movement of the lifting outer shell, the guide pulley rolls inside the sliding inclined groove and drives the dust suction outer shell to extend out of the engraving machine body.

[0014] Further, a fixed frame is fixedly installed inside the dust suction outer shell. A dust suction pipe is fixedly installed on the side of the fixed frame. One end of the dust suction pipe communicates with the inside of the fixed frame, and the other end of the dust suction pipe communicates with the dust suction device inside the engraving machine body. The side of the fixed frame facing the laser engraving head is open. An extending frame is slidably installed inside the fixed frame. A sliding protrusion is fixedly installed above the extending frame, and the sliding protrusion is used to drive the extending frame to move towards the laser engraving head.

[0015] Further, an extending through hole for the sliding protrusion to pass through is provided on the fixed frame. A sliding plate is slidably installed inside the dust suction outer shell. A positioning plate is provided at the end of the sliding plate extending out of the dust suction outer shell, and the positioning plate is fixedly connected to the base. A guiding inclined groove for guiding the position of the sliding protrusion is provided on the sliding plate. When the dust suction outer shell slides away from the engraving machine body, the sliding protrusion slides inside the guiding inclined groove and drives the extending frame to extend towards the laser engraving head.

[0016] Further, multiple rows of dust suction through holes are provided in the direction of the extending frame towards the laser engraving head. The multiple rows of dust suction through holes are distributed vertically in a pattern of being sparse at the top and dense at the bottom. The projection contour of the extending frame in a top view is U-shaped.

[0017] Advantageous Effects

[0018] The technical solution provided by the present invention has the following advantageous effects compared with the known public technologies:

[0019] In the present invention, by providing a sliding member below the lifting housing, when there is an obstacle below during the downward movement of the lifting housing, when the sliding member abuts against the obstacle, the sliding member will squeeze the elastic member upward, causing the middle part of the diamond-shaped elastic member to move toward the two sides away from each other. When the two sides of the middle part of the elastic member move, it will drive the limiting block to move toward the limiting column, so that the limiting block is stuck on the limiting column, which can limit the further downward movement of the lifting housing and avoid production accidents.

[0020] In the present invention, by providing a guide plate above the dust suction housing, during the upward movement of the lifting housing, the guide pulley inside the lifting housing rolls inside the sliding chute, guiding the dust suction housing to move inside the engraving machine body, emptying the base, and making it more convenient to place and take the raw material to be engraved.

[0021] In the present invention, by slidably installing an extending frame on the dust suction housing, when the dust suction housing slides away from the engraving machine body, it drives the extending frame to move toward the laser engraving head, so that the extending frame can be closer to the engraving position, and more efficiently collect the dust or fumes generated by engraving into the dust suction housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0025] Figure 3 It is for the Figure 2 A partial enlarged structure schematic diagram at A of the present invention;

[0026] Figure 4 It is a side view of the present invention;

[0027] Figure 5 It is a schematic diagram of the internal structure of the lifting housing of the present invention;

[0028] Figure 6 It is a schematic diagram of the installation structure on both sides of the elastic member of the present invention;

[0029] Figure 7 It is a schematic diagram of the overall structure of the engraving machine body of the present invention;

[0030] Figure 8 Schematic diagram of the internal structure of the dust collection housing of the present invention;

[0031] Figure 9 Exploded view of the cooperative installation of the fixing frame and the extending frame of the present invention.

[0032] The reference numerals in the figure respectively represent:

[0033] 1. Engraving machine body; 11. Base; 12. Laser engraving head; 13. Telescopic rod; 14. Limit post; 15. Guide pulley;

[0034] 2. Lifting housing; 21. Sliding track; 22. Positioning member; 221. Elastic member; 2211. Limit plate; 222. Airbag; 223. Limit block; 224. Connecting pipe; 23. Sliding member; 231. Sealing gasket;

[0035] 3. Dust collection housing; 31. Guide plate; 3101. Sliding chute; 32. Fixing frame; 3201. Extending through hole; 33. Dust collection pipe; 34. Positioning plate; 35. Sliding plate; 3501. Guide chute; 36. Extending frame; 361. Sliding protrusion. Specific embodiments

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0037] The present invention will be further described below with reference to the embodiments.

[0038] Embodiment: A closed laser engraving machine, as Figure 1 - Figure 4 shown, includes an engraving machine body 1 and a base 11. A laser engraving head 12 is provided on one side of the engraving machine body 1. A lifting housing 2 is slidably mounted up and down outside the laser engraving head 12. The lifting housing 2 is slidably connected to the engraving machine body 1 through a sliding track 21. A telescopic rod 13 is fixedly mounted on the base 11, and the upper end of the telescopic rod 13 is fixedly connected to the lifting housing 2. The telescopic rod 13 is used to drive the lifting housing 2 to move up and down. The above structures are all existing mature technologies and will not be elaborated here. A positioning member 22 is horizontally and fixedly mounted inside the lifting housing 2. The shape of the positioning member 22 conforms to the contour of the lower end face of the lifting housing 2. A sliding member 23 is slidably mounted up and down below the positioning member 22;

[0039] A limiting post 14 is vertically installed on the base 11. The sliding member 23 and the positioning member 22 are connected to each other by a plurality of elastic members 221. The side view projection shape of the elastic member 221 is a rhombus. A limiting block 223 is arranged on the side of the elastic member 221 closest to the limiting post 14, and the limiting block 223 is used to be stuck on the limiting post 14 when the elastic member 221 is squeezed.

[0040] In the present invention, by arranging the sliding member 23 below the lifting outer shell 2, when there are obstacles (human bodies or materials) left below during the downward movement of the lifting outer shell 2, when the sliding member 23 abuts against the obstacle, the sliding member 23 will squeeze the elastic member 221 upward, causing the middle part of the rhombic elastic member 221 to move towards the two sides away from each other. When the middle part of the elastic member 221 moves on both sides, it will drive the limiting block 223 to move towards the limiting post 14, so that the limiting block 223 is stuck on the limiting post 14, which can limit the continuous downward movement of the lifting outer shell 2 and avoid production accidents.

[0041] Further, as Figure 2 and Figure 4 shown, a helical tooth is arranged on one side of the limiting post 14, and a helical groove matching with the helical tooth is arranged on the limiting block 223. When the limiting block 223 moves towards the limiting post 14, the helical groove is stuck outside the helical tooth to limit the downward movement of the lifting outer shell 2.

[0042] Among them, a notch is arranged at the lowermost part of the limiting post 14 (as shown in Figure 4 ), and the notch will not catch the limiting block 223. The upper end surface of the helical tooth is a horizontal plane, and the lower end surface is an inclined plane. When the limiting block 223 is stuck on the limiting post 14, the limiting block 223 is allowed to move upward and not allowed to move downward (equivalent to a ratchet and pawl structure).

[0043] It should be noted that the limiting block 223 is horizontally slidably connected to the lower part of the positioning member 22. When the limiting block 223 is stuck on the limiting post 14, it will not affect the up and down movement of the sliding member 23.

[0044] Further, as Figure 2 and Figure 3 shown, a sealing gasket 231 is arranged on the lower end surface of the sliding member 23. The sealing gasket 231 is hollow inside. An airbag 222 is arranged on the other side of the elastic member 221 closest to the limiting post 14. The airbag 222 is fixedly installed below the positioning member 22. A communication pipe 224 is arranged at the tail of the airbag 222, and the other end of the communication pipe 224 is communicated with the inside of the sealing gasket 231.

[0045] Among them, by arranging a gasket 231 below the sliding member 23 and an airbag 222 above the sliding member 23, when the sliding member 23 moves to the lowest point, as the lifting outer shell 2 continues to move downward, the elastic member 221 will be squeezed, causing the two sides of the elastic member 221 to expand outward, and the side of the elastic member 221 will squeeze the airbag 222, so that the gas inside the airbag 222 is squeezed into the inside of the gasket 231, making the gasket 231 fit more tightly with the base 11, and preventing dust or harmful gases generated during the engraving process from leaking from the gasket 231.

[0046] Further, as Figure 4 and Figure 6 shown, limit plates 2211 are fixedly installed at the bending parts on both sides of the elastic member 221, and the limit plates 2211 respectively abut against the sides of the airbag 222 and the limit block 223.

[0047] Among them, by arranging limit plates 2211 on both sides of the elastic member 221, when the two sides of the elastic member 221 expand outward, they can have a larger contact area with the airbag 222 or the limit block 223, and can squeeze the airbag 222 or the limit block 223 more stably.

[0048] Among them, airbags 222 are arranged on both sides of the elastic member 221 that is not close to the limit post 14. The specific structure is as Figure 6 shown, different installation states on both sides of the elastic member 221.

[0049] Further, as Figure 7 and Figure 8 shown, two dust suction assemblies are slidably installed on the base 11, and the two dust suction assemblies are respectively located on both sides of the laser engraving head 12. The dust suction assembly includes a dust suction outer shell 3. A guide plate 31 is fixedly installed at the upper end of the dust suction outer shell 3. A sliding inclined groove 3101 is arranged on the guide plate 31. A guide pulley 15 is fixedly installed on the inner wall of the lifting outer shell 2. During the downward movement of the lifting outer shell 2, the guide pulley 15 rolls inside the sliding inclined groove 3101 and drives the dust suction outer shell 3 to extend out of the engraving machine body 1.

[0050] Among them, by arranging a guide plate 31 above the dust suction outer shell 3, during the upward movement of the lifting outer shell 2, the guide pulley 15 inside the lifting outer shell 2 rolls inside the sliding inclined groove 3101, guiding the dust suction outer shell 3 to move into the engraving machine body 1, emptying the base 11, and making it more convenient to take and place the raw material to be engraved.

[0051] Further, as Figure 7 and Figure 8As shown, a fixed frame 32 is fixedly installed inside the dust suction housing 3. A dust suction pipe 33 is fixedly installed on the side of the fixed frame 32. One end of the dust suction pipe 33 communicates with the inside of the fixed frame 32, and the other end of the dust suction pipe 33 communicates with the dust suction device inside the engraving machine body 1. The side of the fixed frame 32 facing the laser engraving head 12 is open. A protruding frame 36 is slidably installed inside the fixed frame 32. A sliding protrusion 361 is fixedly installed above the protruding frame 36, and the sliding protrusion 361 is used to drive the protruding frame 36 to move towards the laser engraving head 12.

[0052] Among them, by slidably installing the protruding frame 36 at the dust suction housing 3, when the dust suction housing 3 slides away from the engraving machine body 1, it drives the protruding frame 36 to move towards the laser engraving head 12, which can make the protruding frame 36 closer to the engraving position, and can collect the dust or fumes generated by engraving into the dust suction housing 3 more efficiently.

[0053] In addition, the dust suction pipe 33 is an elastic pipeline, and the specific structure can refer to the collection pipeline of an existing medium-sized vacuum cleaner.

[0054] Furthermore, as Figure 8 and Figure 9 shown, an extending through hole 3201 for the sliding protrusion 361 to pass through is provided on the fixed frame 32. A sliding plate 35 is slidably installed inside the dust suction housing 3. A positioning plate 34 is provided at one end of the sliding plate 35 extending out of the dust suction housing 3, and the positioning plate 34 is fixedly connected to the base 11. A guiding inclined groove 3501 for guiding the position of the sliding protrusion 361 is provided on the sliding plate 35. When the dust suction housing 3 slides away from the engraving machine body 1, the sliding protrusion 361 slides inside the guiding inclined groove 3501 and drives the protruding frame 36 to extend towards the laser engraving head 12.

[0055] Among them, by providing the guiding inclined groove 3501 on the sliding plate 35, when the dust suction housing 3 slides away from the engraving machine body 1, the dust suction housing 3 drives the fixed frame 32 and the protruding frame 36 located inside the fixed frame 32 to move away from the engraving machine body 1. At this time, the sliding protrusion 361 slides along the guiding inclined groove 3501 towards the side away from the positioning plate 34, which can drive the protruding frame 36 closer to the laser engraving head 12 in the middle and improve the dust suction efficiency of the dust suction housing 3 (the position where dust is generated is closer to the dust suction position).

[0056] Furthermore, as Figure 8 and Figure 9 shown, a plurality of rows of dust suction through holes are provided in the direction of the protruding frame 36 towards the laser engraving head 12. The plurality of rows of dust suction through holes are distributed up and down in a shape of being sparse at the top and dense at the bottom, and the projected contour of the protruding frame 36 in a top view is U-shaped.

[0057] Among them, by distributing the dust suction through holes in a sparse upper and dense lower manner, the airflow generated at the protruding frame 36 during dust suction is more concentrated below the protruding frame 36, so that dust can be collected more concentratedly from the object to be carved, and the dust collection can be completed more accurately.

[0058] Working principle: Through the above structure, when the lifting outer shell 2 moves up and down, it can not only stop suddenly when encountering an obstacle to avoid squeezing the human body or other objects, but also synchronously drive the protrusion or retraction of the dust suction component during the up and down movement, so that there is a larger operating space when opening the lifting outer shell 2 to take out or place the raw material to be carved.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A closed laser engraving machine, comprising an engraving machine body (1) and a base (11), wherein a laser engraving head (12) is arranged on one side of the engraving machine body (1), and a lifting shell (2) is slidably mounted on the outer side of the laser engraving head (12), characterized in that: A positioning member (22) is fixedly installed horizontally inside the lifting shell (2), the shape of the positioning member (22) matches the contour of the lower end surface of the lifting shell (2), and a sliding member (23) is installed below the positioning member (22) to slide up and down; A limiting column (14) is vertically mounted on the base (11); the sliding member (23) and the positioning member (22) are connected to each other via a plurality of elastic members (221); the elastic members (221) are rhombus-shaped in side view projection; a limiting block (223) is provided on a side of the elastic member (221) closest to the limiting column (14) facing the limiting column (14); the limiting block (223) is used to be stuck on the limiting column (14) when the elastic member (221) is squeezed; A bevel tooth is provided on one side of the limit column (14), and a bevel groove cooperating with the bevel tooth is provided on the limit block (223); when the limit block (223) moves toward the limit column (14), the bevel groove is clamped on the outer side of the bevel tooth to limit the downward movement of the lifting housing (2); A sealing pad (231) is provided on the lower end surface of the sliding member (23), the interior of the sealing pad (231) is hollow, an air bag (222) is provided on the other side of the elastic member (221) closest to the limiting column (14), the air bag (222) is fixedly installed below the positioning member (22), a connecting pipe (224) is provided at the tail of the air bag (222), the other end of the connecting pipe (224) is connected to the interior of the sealing pad (231); Limiting plates (2211) are fixedly mounted at the bends on both sides of the elastic member (221), and the limiting plates (2211) respectively abut against the sides of the airbag (222) and the limiting block (223).

2. A closed laser engraving machine according to claim 1, characterized in that: Two groups of dust collection components are slidably mounted on the base (11), and the two groups of dust collection components are respectively located on both sides of the laser engraving head (12). The dust collection components include a dust collection shell (3), and a guide plate (31) is fixedly mounted on the upper end of the dust collection shell (3). A sliding inclined groove (3101) is provided on the guide plate (31). A guide pulley (15) is fixedly mounted on the inner wall of the lifting shell (2). When the lifting shell (2) moves downward, the guide pulley (15) rolls inside the sliding inclined groove (3101) and drives the dust collection shell (3) to extend out of the inside of the engraving machine body (1).

3. A closed laser engraving machine according to claim 2, characterized in that: A fixed frame (32) is fixedly installed inside the dust collection shell (3), a dust collection pipe (33) is fixedly installed on the side of the fixed frame (32), one end of the dust collection pipe (33) is connected to the inside of the fixed frame (32), and the other end of the dust collection pipe (33) is connected to the dust collection device inside the engraving machine body (1), the fixed frame (32) is arranged with an opening on one side facing the laser engraving head (12), a protruding frame (36) is slidably installed inside the fixed frame (32), a sliding protrusion (361) is fixedly installed above the protruding frame (36), and the sliding protrusion (361) is used to drive the protruding frame (36) to move toward the laser engraving head (12).

4. A closed laser engraving machine according to claim 3, characterized in that: The fixed frame (32) is provided with an extending through hole (3201) for the sliding protrusion (361) to pass through, and a sliding plate (35) is slidably mounted inside the dust collecting housing (3). A positioning plate (34) is provided at one end of the sliding plate (35) extending out of the dust collecting housing (3). The positioning plate (34) is fixedly connected to the base (11), and a guiding inclined groove (3501) is provided on the sliding plate (35) for guiding the position of the sliding protrusion (361). When the dust collecting housing (3) slides in a direction away from the engraving machine body (1), the sliding protrusion (361) slides inside the guiding inclined groove (3501) and drives the extending frame (36) to extend toward the laser engraving head (12).

5. A closed laser engraving machine according to claim 4, characterized in that: The extending frame (36) is provided with a plurality of rows of dust suction through holes in a direction toward the laser engraving head (12), the plurality of rows of dust suction through holes being distributed vertically in a sparse upper portion and dense lower portion, and the top view projection profile of the extending frame (36) is U-shaped.

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