A laser additive printing head anti-collision structure

Abstract

The present invention relates to the field of laser additive printing technology, and specifically to an anti-collision structure for a laser additive printing head, comprising a laser additive printing head, wherein an anti-collision protective cover assembly is arranged on the outside of the laser additive printing head, a lifting component assembly is arranged on the upper side of one side of the anti-collision protective cover assembly, and a side fixing plate is arranged on the lower side of one side of the anti-collision protective cover assembly. The beneficial effect is as follows: by arranging a protective outer sleeve and a sliding inner sleeve on the outside of the laser additive printing head, and arranging a sensor under the laser additive printing head, once the laser additive printing head is too close to a printing table, the sensor is firstly collided and squeezed, and a signal is transmitted to a control device. When a driving motor receives the control signal, it will start to drive the gear to rotate, so that the rack moves upward under the limit cooperation of the fixed sleeve, and the protective outer sleeve is driven and extended by the fixed sleeve to make the laser additive printing head rise and stay away from the bottom collision object, so as to achieve the purpose of anti-collision without affecting the operation of the laser additive printing head.

Description

Technical Field

[0001] The invention belongs to the technical field of laser additive printing, and in particular relates to an anti-collision structure for a laser additive printing head. Background Art

[0002] Laser additive manufacturing is a technology that builds three-dimensional objects by stacking materials layer by layer. In the laser additive manufacturing process, the anti-collision structure of the print head is very important because it protects the print head from damage caused by accidental collisions and ensures the continuity and stability of the printing process. At present, in laser additive production, powder spraying is required through the print head, and the print head moves when spraying powder, but the print head lacks a protective mechanism and is prone to collision when moving, which can cause damage to the print head and affect its use.

[0003] The existing Chinese patent document with publication number CN220095564U proposes to solve the above problem by fixing a horizontal plate on the print head body, disposing a first anti-collision plate directly below the horizontal plate, and disposing a first elastic buffer mechanism between the horizontal plate and the first anti-collision plate. However, the horizontal plate, the first anti-collision plate and the elastic buffer mechanism will increase the overall weight of the print head, which may have an adverse effect on the motion control of the print head.

[0004] Therefore, the present invention proposes a laser additive print head anti-collision structure to solve the problem in the prior art that a horizontal plate is fixedly sleeved on the print head body, a first anti-collision plate is arranged directly below the horizontal plate, and a first elastic buffer mechanism is arranged between the horizontal plate and the first anti-collision plate, which increases the height and weight of the print head and has an adverse effect on the motion control of the print head. The sensor is used to cooperate with the anti-collision component of the external device on the moving part to set the collision distance of the print head, so that the print head stops immediately at a certain position, and the pop-up protection component provides all-round anti-collision protection for the print head. Summary of the invention

[0005] In view of the shortcomings of the prior art, an object of the present invention is to provide an anti-collision structure for a laser additive printing head to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a laser additive printing head anti-collision structure, comprising a laser additive printing head, an anti-collision protection cover assembly is arranged on the outside of the laser additive printing head, a lifting component assembly is arranged on the upper side of one side of the anti-collision protection cover assembly, a side fixing plate is arranged on the lower side of one side of the anti-collision protection cover assembly, a protective wing plate assembly is arranged on the inner side of the anti-collision protection cover assembly, the protective wing plate assembly includes movable wing plates, and the movable wing plates are arranged in three groups.

[0007] Preferably, the anti-collision protection cover combination includes a protective outer cover and a sliding inner cover, the sliding inner cover is slidably installed above the inner wall of the protective outer cover, the upper surface of the sliding inner cover is fixedly connected to the side surface of the laser additive printing head by bolts, and an extrusion ring is provided inside the protective outer cover, the extrusion ring is fixedly installed on the outer surface of the laser additive printing head, and a triangular clamping ring is fixedly installed on the lower surface of the extrusion ring.

[0008] Preferably, the lifting component assembly includes a fixing sleeve and a lifting slide rod, a C-shaped fixing plate is fixedly installed above the side surface of the fixing sleeve by bolts, and the lower end of the lifting slide rod is fixedly connected to the upper surface of the protective sleeve by bolts.

[0009] Preferably, a connecting plate is fixedly installed below the side surface of the fixing sleeve, a side connecting plate is arranged below the inner side of the side fixing plate, the side surface of the side connecting plate is fixedly connected to the side surface of the protective sleeve by bolts, and the connecting plate, the side fixing plate and the side connecting plate are fixedly connected by bolts.

[0010] Preferably, a bending plate is fixedly installed below the side connecting plate by bolts, a contact plate is hingedly installed on one side of the bending plate, and a sensor is fixedly installed on one end of the contact plate.

[0011] Preferably, a driving motor is fixedly installed in the middle of the side surface of the fixed sleeve, a gear is rotatably installed in the middle of the inner side of the fixed sleeve, the output shaft of the driving motor is fixedly connected to one end of the rotating shaft of the gear, a rack is fixedly installed on the inner side of the lifting slide rod, and the side surface of the rack and the side surface of the gear are meshed with each other.

[0012] Preferably, the upper ends of the three groups of movable wing panels are respectively rotatably connected to the inner side walls of the protective sleeve, the upper ends of the movable wing panels are provided with card slots matched with the triangular card ring, the lower side surfaces of the movable wing panels are inclined, a sliding anti-collision plate is slidably installed on one side of the movable wing panel, a triangular pad matched with the inclined surface of the movable wing panel is provided on the inner side of the sliding anti-collision plate, an elastic extrusion folding plate is fixedly installed on the other side of the movable wing panel, and one end of the elastic extrusion folding plate is fixedly connected to the slider surface of the triangular pad.

[0013] Preferably, a side protection pad is fixedly installed on the outer surface of the sliding anti-collision plate, a groove is provided on the outer side of the side protection pad, an energy absorbing stacking plate is hingedly installed inside the groove of the side protection pad, a plurality of groups of the energy absorbing stacking plates are provided, and the plurality of groups of the energy absorbing stacking plates are stacked and engaged with each other, a contact buffer pad is fixedly installed on the bottom lower surface of the sliding anti-collision plate, and a buffer pleated sheet is provided inside the contact buffer pad.

[0014] Preferably, a locking triangle block is provided on the outer side of the connection between the movable wing plate and the protective sleeve, the locking triangle block is hingedly mounted on the inner wall of the protective sleeve, an elastic push plate is provided on the rear side of the locking triangle block, and the inner wall of the protective sleeve is provided with a limiting sliding groove adapted to the locking triangle block.

[0015] Preferably, a hinged pressure strip is hingedly installed below the outer surface of the laser additive printing head, an elastic limiting piece is arranged above the hinged pressure strip, and the upper end of the elastic limiting piece is fixedly connected to the side surface of the laser additive printing head.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By arranging a protective outer sleeve and a sliding inner sleeve on the outer surface of the laser additive printing head, and setting a sensor under the laser additive printing head, once the laser additive printing head is too close to the printing table, the sensor is first collided and squeezed, and the signal is transmitted to the control device. The drive motor receives the control signal and starts to drive the gear to rotate, so that the rack moves upward under the limit cooperation of the fixed sleeve. The protective outer sleeve is driven by the fixed sleeve to extend to make the laser additive printing head rise and stay away from the bottom collision object, so as to achieve the purpose of anti-collision. At the same time, the extrusion ring and the movable wing plate are linked to each other. The movable wing plate cancels the triangular clamping ring due to the upward movement of the extrusion ring. The movable wing panel is snap-fitted and fixed, and under the action of gravity, the movable wing panel naturally flips and droops, and the sliding anti-collision plate will naturally slide downward and extend to protect the bottom of the laser additive printing head. The side protection pads and the energy-absorbing stacking plates play a buffering role in the event of a collision. The energy-absorbing stacking plates are stacked on the inner side of the side protection pads to absorb the impact energy. The buffering pleated sheet design that also contacts the inside of the buffer pad has the same energy-absorbing effect as the energy-absorbing stacking plate, which increases the buffering effect of the impact and further protects the laser additive printing head. This separate design will not affect the operation of the laser additive printing head. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention in the anti-collision state.

[0019] Figure 2 It is a schematic diagram of the overall side structure of the present invention in an anti-collision state.

[0020] Figure 3 It is a schematic diagram of the overall upward structure of the present invention in the anti-collision state.

[0021] Figure 4 It is a schematic diagram of the overall front structure of the present invention in an anti-collision state.

[0022] Figure 5 It is a schematic diagram of the overall structure of the present invention under normal working conditions.

[0023] Figure 6 It is a schematic diagram of the overall side structure of the present invention under normal working conditions.

[0024] Figure 7 It is a schematic diagram of the overall bottom-up structure of the present invention in a normal working state.

[0025] Figure 8 It is a schematic diagram of the overall front structure of the present invention under normal working conditions.

[0026] Fig. 9 It is a schematic diagram of the internal structure of the fixing sleeve of the present invention.

[0027] Fig.10 It is a schematic diagram of the overall cross-sectional structure of the present invention in an anti-collision state.

[0028] Fig.11 It is a schematic diagram of the structure of the interior of the fixing sleeve of the present invention under normal working conditions.

[0029] Fig.12 It is a schematic cross-sectional view of the present invention in normal working state.

[0030] Fig.13 It is a structural schematic diagram of one side of the protective wing panel assembly of the present invention.

[0031] Fig.14 It is a schematic diagram of the structure of the other side of the protective wing panel assembly of the present invention.

[0032] Fig.15 For the present invention Fig. 9 Schematic diagram of the structure at point A.

[0033] Fig.16 For the present invention Fig.10 Schematic diagram of the structure at point B.

[0034] Fig.17 For the present invention Fig.13 Schematic diagram of the structure at C.

[0035] In the figure: 1. Laser additive printing head; 2. Anti-collision protection cover assembly; 21. Protective outer sleeve; 22. Sliding inner sleeve; 23. Extrusion ring; 231. Triangular clamping ring; 24. Articulated pressure strip; 3. Lifting component assembly; 31. Fixed sleeve; 311. C-shaped fixed plate; 312. Connecting plate; 32. Lifting slide bar; 321. Rack; 33. Drive motor; 34. Gear; 4. Side fixing plate; 41. Side connecting plate; 42. Bending plate; 43. Contact plate; 44. Sensor; 45. Buffer plate; 46. Guide spacer; 461. Sliding partition; 5. Protective wing plate assembly; 51. Movable wing plate; 52. Sliding anti-collision plate; 521. Triangular pad; 522. Elastic extrusion folding plate; 523. Contact buffer pad; 53. Side protective pad block; 531. Energy absorbing stacking plate; 54. Locking triangular block. DETAILED DESCRIPTION

[0036] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit 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.

[0037] For example, see Figures 1 to 17The present invention provides a technical solution: a laser additive printing head anti-collision structure, comprising a laser additive printing head 1, an anti-collision protection cover assembly 2 is arranged outside the laser additive printing head 1, a lifting component assembly 3 is arranged above one side of the anti-collision protection cover assembly 2, a side fixing plate 4 is arranged below one side of the anti-collision protection cover assembly 2, a protective wing plate assembly 5 is arranged inside the anti-collision protection cover assembly 2, the protective wing plate assembly 5 includes a movable wing plate 51, and the movable wing plate 51 is arranged in three groups, the anti-collision protection cover assembly 2 includes a protective outer sleeve 21 and a sliding inner sleeve 22, the sliding inner sleeve 22 is slidably installed above the inner wall of the protective outer sleeve 21, and the upper surface of the sliding inner sleeve 22 is in contact with the side surface of the laser additive printing head 1. The protective sleeve 21 is fixedly connected by bolts, an extrusion ring 23 is arranged inside the protective sleeve 21, the extrusion ring 23 is fixedly mounted on the outer surface of the laser additive printing head 1, and a triangular clamping ring 231 is fixedly mounted on the lower surface of the extrusion ring 23. The lifting component assembly 3 includes a fixed sleeve 31 and a lifting slide bar 32. A C-shaped fixing plate 311 is fixedly mounted above the side surface of the fixed sleeve 31 by bolts, and the lower end of the lifting slide bar 32 is fixedly connected to the upper surface of the protective sleeve 21 by bolts. A connecting plate 312 is fixedly mounted below the side surface of the fixed sleeve 31, and a side connecting plate 41 is arranged below the inner side of the side fixing plate 4, and the side surface of the side connecting plate 41 is fixedly connected to the side surface of the protective sleeve 21 by bolts. 12. The side fixing plate 4 and the side connecting plate 41 are fixedly connected by bolts. A bending plate 42 is fixedly installed at the bottom of the side connecting plate 41 by bolts. A contact plate 43 is hingedly installed at one side of the bending plate 42. A sensor 44 is fixedly installed at one end of the contact plate 43. A driving motor 33 is fixedly installed at the middle of the side surface of the fixing sleeve 31. A gear 34 is rotatably installed at the middle of the inner side of the fixing sleeve 31. The output shaft of the driving motor 33 is fixedly connected to one end of the rotating shaft of the gear 34. A rack 321 is fixedly installed at the inner side of the lifting slide rod 32. The side surface of the rack 321 meshes with the side surface of the gear 34. In this embodiment, the upper end of the laser additive printing head 1 needs to be connected to the additive powder supply pipe to protect it. The outer sleeve 21 and the sliding inner sleeve 22 form a slidable anti-collision protective sleeve, wherein the sliding inner sleeve 22 is fixed to the outer side of the laser additive printing head 1, and the interior of the protective outer sleeve 21 is provided with a storage groove adapted to the laser additive printing head 1 and the sliding inner sleeve 22, and the lifting component assembly 3 is fixedly connected to the moving part of the laser additive equipment through the C-shaped fixing plate 311, and the lifting component assembly 3 fixes and installs the protective outer sleeve 21 through the connecting plate 312, and the lifting slide rod 32 is fixed to the protective outer sleeve 21 through bolts, so that when performing additive printing, the lifting component assembly 3 moves with the protective outer sleeve 21 along with the moving part of the laser additive equipment, so that the laser additive printing head 1 is convenient for printing;In addition, a side fixing plate 4 is also fixed below the connecting plate 312, and the side fixing plate 4 serves to connect the bending plate 42 and the contact plate 43. The sensor 44 fixed on the contact plate 43 is located near the lower end of the laser additive printing head 1. The sensor 44 model is a collision switch digital sensor. It is worth noting that an arc groove is provided at a position of the contact plate 43 near the laser additive printing head 1 to facilitate the laser additive printing head 1 to print the material. The signal output end of the sensor 44 is connected to the control device of the printing device, and the input end of the drive motor 33 is also connected to the control device. Once the laser additive printing head 1 is too close to the printing table, the sensor 44 is firstly hit. Extrusion, transmit the signal to the control device, the drive motor 33 receives the control signal and starts to drive the gear 34 to rotate, so that the rack 321 moves up under the limit cooperation of the fixed sleeve 31, and the protective sleeve 21 is driven by the fixed sleeve 31 to extend so that the laser additive printing head 1 rises and stays away from the bottom collision object to achieve the purpose of anti-collision. The side wall of the protective sleeve 21 is provided with heat dissipation holes, and heat can be dissipated after the bottom of the laser additive printing head 1 rises and shrinks to the inside of the protective sleeve 21. In addition, when the sensor 44 is collided, the bending plate 42 and the contact plate 43 will be squeezed, bent, deformed and lifted to a certain extent, which will produce a buffer warning for anti-collision of the laser additive printing head 1. ;

[0038] For example 2, please refer to Figures 1 to 17 On the basis of the first embodiment, in order to protect the sensor 44 from damage caused by severe impact, the present embodiment further proposes that a buffer plate 45 is provided below the sensor 44, the buffer plate 45 is hingedly mounted on the lower surface of the contact plate 43, an elastic gasket is provided between the upper surface of the buffer plate 45 and the lower surface of the contact plate 43, a semicircular groove adapted to the sensor 44 is provided at one end of the buffer plate 45 close to the sensor 44, and buffer air cushion balls are clamped and installed on both sides of the buffer plate 45; in the present embodiment, the buffer plate 45 is provided below the sensor 44, and the elastic gasket keeps the buffer plate 45 in a downwardly unfolded shape, when the sensor 44 is about to be collided, the buffer plate 45 will be squeezed by the collision first, and the elastic gasket and the buffer air cushion ball will be squeezed and deformed to buffer the impact, and the buffer plate 45 is compressed so that the lower end of the sensor 44 is exposed through the semicircular groove at the bottom to receive the collision after buffering, thereby avoiding direct damage to the sensor 44 due to severe impact and improving the service life of the sensor 44.

[0039] For example 3, please refer to Figures 1 to 17On the basis of the second embodiment, in order to prevent the powder airflow generated by the laser additive printing head 1 from having an adverse effect on the sensor 44 when printing, the present embodiment further proposes that a semicircular groove is provided at one end of the contact plate 43 close to the additive outlet of the laser additive printing head 1, a buffer plate 45 is fixedly installed below the semicircular groove of the contact plate 43, a guide sleeve 46 is slidably installed inside the buffer plate 45, a U-shaped piece is provided above the guide sleeve 46, and the U-shaped piece is provided on the inner side of the buffer plate 45; in the present embodiment, the guide sleeve 46 blocks the lower end of the laser additive printing head 1 from the sensor 44, The guide sleeve 46 and the sliding partition 461 are made of high-temperature resistant materials. By designing the arc-shaped vertical movable telescopic structure of the guide sleeve 46 and the sliding partition 461, the powder airflow generated by the printing of the laser additive printing head 1 is guided and gathered, which not only improves the printing effect of the laser additive printing head 1, but also provides thermal insulation protection for the sensor 44. In addition, a U-shaped piece is arranged above the sliding partition 461. Once an impact occurs, the sliding partition 461 will shrink to the inside of the guide sleeve 46. At this time, the U-shaped piece is squeezed, which can further provide an anti-impact buffer for the sensor 44.

[0040] Example 4, please refer to Figures 1 to 17On the basis of the third embodiment, in order to improve the anti-collision protection effect on the laser additive printing head 1, the present embodiment further proposes that the upper ends of the three groups of movable wing plates 51 are respectively rotatably connected to the inner side walls of the protective jacket 21, and the upper ends of the movable wing plates 51 are provided with a card slot adapted to the triangular card ring 231, and the lower side surface of the movable wing plate 51 is an inclined surface, and a sliding anti-collision plate 52 is slidably installed on one side of the movable wing plate 51, and a triangular pad 521 adapted to the inclined surface of the movable wing plate 51 is provided on the inner side of the sliding anti-collision plate 52, and an elastic extrusion folding plate 522 is fixedly installed on the other side of the movable wing plate 51, and one end of the elastic extrusion folding plate 522 is fixedly connected to the sliding block surface of the triangular pad 521, and a side protection pad 53 is fixedly installed on the outer surface of the sliding anti-collision plate 52, and a groove is provided on the outer side of the side protection pad 53. An energy absorbing stacking plate 531 is hingedly installed inside the groove of 53, and multiple groups of energy absorbing stacking plates 531 are provided. The multiple groups of energy absorbing stacking plates 531 are stacked and engaged with each other. A contact buffer pad 523 is fixedly installed on the bottom lower surface of the sliding anti-collision plate 52, and a buffer pleated sheet is arranged inside the contact buffer pad 523. A locking triangular block 54 is arranged on the outer side of the connection between the movable wing plate 51 and the protective jacket 21. The locking triangular block 54 is hingedly installed on the inner side wall of the protective jacket 21, and an elastic push plate is arranged on the rear side of the locking triangular block 54. A limiting sliding groove adapted to the locking triangular block 54 is opened on the inner side wall of the protective jacket 21. A hinged pressure strip 24 is hingedly installed below the outer side surface of the laser additive printing head 1, and an elastic limiting sheet is arranged above the hinged pressure strip 24. The upper end of the elastic limiting sheet is fixedly connected to the side surface of the laser additive printing head 1.In the present embodiment, three groups of movable wing plates 51 are respectively arranged on the outer side of the laser additive printing head 1, and cooperate with the side fixing plate 4, the bending plate 42, and the contact plate 43 to provide all-round anti-collision protection for the laser additive printing head 1. The specific action is that when the sensor 44 outputs a signal, the driving motor 33 drives the lifting slide bar 32 to move upward to lift the laser additive printing head 1 and the protective jacket 21, the movable wing plate 51 cancels the clamping and fixing of the movable wing plate 51 by the triangular clamping ring 231 due to the upward movement of the extrusion ring 23. Under the action of gravity, the movable wing plate 51 naturally turns over and droops, and the locking triangular block 54 is directly clamped into the triangular clamping groove above the movable wing plate 51 under the action of the elastic push plate. Similarly, because the triangular pad 521 contacts the inclined surface of the movable wing plate 51, the sliding anti-collision plate 52 will naturally slide down and extend to protect the bottom of the laser additive printing head 1. The side protection pad block 53 and the energy absorbing stacking plate 531 not only increase the gravity, so that the sliding anti-collision plate 52 can naturally slide down and extend, but also When a collision occurs, the energy-absorbing stacking plates 531 are stacked layer by layer on the inner side of the side protection pad 53 to absorb the impact energy. Similarly, the buffering pleated sheet design inside the contact buffer pad 523 has the same energy-absorbing effect as the energy-absorbing stacking plates 531, which increases the buffering effect of the collision and further protects the laser additive printing head 1. On the other hand, when the driving motor 33 receives the signal of the control device and drives the gear 34 to rotate in the reverse direction to reset the lifting slide bar 32, the protective jacket 21 will drive the laser additive printing head 1 to reset. At this time, the extrusion ring 23 will press down inside the protective jacket 21, so that the triangular clamping ring 231 squeezes and clamps the upper end of the movable wing plate 51 to make the movable wing plate 51 flip and reset again. At this time, the sliding anti-collision plate 52 slides and resets along the inclined surface of the movable wing plate 51 under the elastic push of the contact buffer pad 523, which is convenient for the laser additive printing head 1 to continue printing. At the same time, it can also provide anti-collision buffering protection for the side of the laser additive printing head 1 during its movement. ;

[0041] For example 5, please refer to Figures 1 to 17On the basis of the fourth embodiment, this embodiment further proposes a method for using the anti-collision structure of the laser additive printing head, comprising the following steps: Step 1, the sensor 44 is triggered to transmit a signal before the laser additive printing head 1 collides. Once the laser additive printing head 1 is too close to the printing table, the sensor 44 is first collided and squeezed, and the signal is transmitted to the control device. The drive motor 33 receives the control signal and starts to drive the gear 34 to rotate, so that the rack 321 moves up under the limit cooperation of the fixed sleeve 31, and the protective sleeve 21 is driven to extend by the fixed sleeve 31 to make the laser additive printing head 1 rise and away from the bottom collision object; Step 2, the movable wing plate 51 is affected and flipped to perform anti-collision protection. When the drive motor 33 drives the lifting slide bar 32 to move up to lift the laser additive printing head 1 and the protective sleeve 21, the movable wing plate 51 cancels the clamping fixation of the triangular clamping ring 231 on the movable wing plate 51 due to the upward movement of the extrusion ring 23. Under the action of gravity, the movable wing plate 51 naturally When the lifting rod 32 is reset, the driving motor 33 drives the gear 34 to rotate in the opposite direction by receiving the signal from the control device to reset the lifting slide bar 32, and the protective sleeve 21 drives the laser additive printing head 1 to reset. At this time, the extrusion ring 23 presses down inside the protective sleeve 21, so that the triangular locking ring 231 squeezes and locks the upper end of the movable wing plate 51 to make the movable wing plate 51 flip and reset again. At this time, the sliding anti-collision plate 52 slides and resets along the inclined surface of the movable wing plate 51 under the elastic push of the contact buffer pad 523, which is convenient for the laser additive printing head 1 to continue printing. At the same time, it can also provide a buffering protection for the side of the laser additive printing head 1 during the movement of the laser additive printing head 1.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser additive printing head anti-collision structure, comprising a laser additive printing head (1), characterized in that: The laser additive printing head (1) is provided with an anti-collision protection cover assembly (2) on the outside, a lifting component assembly (3) is provided on the upper side of one side of the anti-collision protection cover assembly (2), a side fixing plate (4) is provided on the lower side of one side of the anti-collision protection cover assembly (2), a protective wing plate assembly (5) is provided on the inner side of the anti-collision protection cover assembly (2), the protective wing plate assembly (5) includes a movable wing plate (51), and the movable wing plate (51) is provided in three groups, the anti-collision protection cover assembly (2) includes a protective outer sleeve (21) and a sliding inner sleeve (22), the sliding inner sleeve (22) is slidably mounted on the upper side of the inner wall of the protective outer sleeve (21), the upper surface of the sliding inner sleeve (22) is fixedly connected to the side surface of the laser additive printing head (1) by bolts, and an extrusion ring (23) is provided inside the protective outer sleeve (21), the extrusion ring (23) is provided on the inner side of the protective outer sleeve (21), and the extrusion ring (23) is provided on the inner side of the protective outer sleeve (21). The ring (23) is fixedly mounted on the outer surface of the laser additive printing head (1); a triangular clamping ring (231) is fixedly mounted on the lower surface of the extrusion ring (23); the upper ends of the three groups of movable wing plates (51) are respectively rotatably connected to the inner side wall of the protective jacket (21); a clamping groove matched with the triangular clamping ring (231) is provided at the upper end of the movable wing plate (51); the lower side surface of the movable wing plate (51) is an inclined surface; a sliding anti-collision plate (52) is slidably mounted on one side of the movable wing plate (51); a triangular pad (521) matched with the inclined surface of the movable wing plate (51) is arranged on the inner side of the sliding anti-collision plate (52); an elastic extrusion folding plate (522) is fixedly mounted on the other side of the movable wing plate (51); one end of the elastic extrusion folding plate (522) is fixedly connected to the surface of a slider of the triangular pad (521).

2. The anti-collision structure of a laser additive printing head according to claim 1, characterized in that: The lifting component assembly (3) comprises a fixing sleeve (31) and a lifting slide rod (32); a C-shaped fixing plate (311) is fixedly mounted above the side surface of the fixing sleeve (31) by means of bolts; and the lower end of the lifting slide rod (32) is fixedly connected to the upper surface of the protective sleeve (21) by means of bolts.

3. The anti-collision structure of a laser additive printing head according to claim 2, characterized in that: A connecting plate (312) is fixedly mounted below the side surface of the fixing sleeve (31), a side connecting plate (41) is provided below the inner side of the side fixing plate (4), the side surface of the side connecting plate (41) is fixedly connected to the side surface of the protective outer sleeve (21) by bolts, and the connecting plate (312), the side fixing plate (4), and the side connecting plate (41) are fixedly connected by bolts.

4. The anti-collision structure of a laser additive printing head according to claim 3, characterized in that: A bent plate (42) is fixedly mounted below the side connection plate (41) by means of bolts, a contact plate (43) is hingedly mounted on one side of the bent plate (42), and a sensor (44) is fixedly mounted on one end of the contact plate (43).

5. The anti-collision structure of a laser additive printing head according to claim 2, characterized in that: A driving motor (33) is fixedly mounted on the middle part of the side surface of the fixing sleeve (31), a gear (34) is rotatably mounted on the middle part of the inner side of the fixing sleeve (31), an output shaft of the driving motor (33) is fixedly connected to one end of the rotating shaft of the gear (34), a rack (321) is fixedly mounted on the inner side of the lifting slide rod (32), and the side surface of the rack (321) is meshed with the side surface of the gear (34).

6. The anti-collision structure of a laser additive printing head according to claim 1, characterized in that: A side protection pad (53) is fixedly mounted on the outer surface of the sliding anti-collision plate (52), a groove is provided on the outer side of the side protection pad (53), an energy absorption stacking plate (531) is hingedly mounted inside the groove of the side protection pad (53), a plurality of groups of the energy absorption stacking plates (531) are provided, and the plurality of groups of the energy absorption stacking plates (531) are stacked and engaged with each other, and a contact buffer pad (523) is fixedly mounted on the bottom lower surface of the sliding anti-collision plate (52), and a buffer pleated sheet is provided inside the contact buffer pad (523).

7. The anti-collision structure of a laser additive printing head according to claim 1, characterized in that: A locking triangular block (54) is arranged on the outer side of the connection between the movable wing plate (51) and the protective sleeve (21); the locking triangular block (54) is hingedly mounted on the inner side wall of the protective sleeve (21); an elastic push plate is arranged on the rear side of the locking triangular block (54); and a limiting sliding groove adapted to the locking triangular block (54) is provided on the inner side wall of the protective sleeve (21).

8. The anti-collision structure of a laser additive printing head according to claim 1, characterized in that: A hinged pressure strip (24) is hingedly mounted below the outer surface of the laser additive printing head (1), an elastic limiting piece is arranged above the hinged pressure strip (24), and the upper end of the elastic limiting piece is fixedly connected to the side surface of the laser additive printing head (1).

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