Scribing and marking device for surface of multi-layer aluminum alloy composite material

Abstract

The utility model relates to the technical field of lineation and marking, and discloses a multilayer aluminum alloy composite material surface lineation and marking device which comprises a base and a lineation box located on the upper portion of the base, a first connecting groove is formed in the side, close to a first connecting base, of the interior of the lineation box, and a second connecting groove is formed in the side, close to a second connecting base, of the lineation box. A first pen clamping plate is arranged on the side, close to the first connecting base, in the scribing box, and a first connecting buckle is arranged at the end, close to the first connecting base, of the first pen clamping plate. According to the surface lineation marking device for the multi-layer aluminum alloy composite material, the number of lineation lines is effectively increased by arranging a front row of first round holes and a rear row of first round holes which are distributed in a staggered mode, then through equidistant distribution, customization according to customer requirements in actual operation can be met, and the practicability of the device is improved; and through the buckling installation of the second clamping groove and the fixing column, the connecting sleeve can be quickly fixed and disassembled under the rotary connection of the connecting sleeve and the first round hole.

Description

TECHNICAL FIELD

[0001] The utility model relates to a line marking device for the surface of multilayer aluminum alloy composite material. BACKGROUND

[0002] Aluminum-based composite material is usually a plate strip foil composite material formed by rolling three layers of aluminum alloy with different functional characteristics, for example, prepared by Al-Mn matrix alloy as core material layer, double-sided cladding Al-Si brazing alloy and Al-Zn corrosion-resistant alloy.

[0003] However, for this multilayer composite aluminum alloy composite plate, the downstream customer cannot identify which layer is the brazing surface and which layer is the corrosion-resistant surface by visual inspection when rolling to the finished product thickness. In the preparation process of aluminum alloy material, surface marking must be performed to quickly distinguish materials with the same appearance, for example, by marking the brazing surface, the operator can easily distinguish the brazing surface from the non-brazing surface with the naked eye. According to customer usage requirements, sometimes the material needs to be marked horizontally, but the existing technology cannot achieve horizontal marking, and the edge position marking is not clear.

[0004] Chinese utility model patent publication No. CN219599517U discloses a marking device. The marking device can adjust the marking position on the plate through the adjusting mechanism, and can achieve straight-line marking through the marking mechanism. Compared with manual marking, the marking device can make marking more convenient, ensure the neatness of line marking, and effectively ensure the accuracy of subsequent processing. However, the marking device does not have multiple line marking mechanisms, and when the number of lines required is large, the operation of the marking device is complex, it is difficult to meet customer requirements, and it takes a long time. The marking device does not have a design for installing a marking pen, the marking pen cannot be quickly detached from the marking device body, it is not convenient to replace the marking pen later, and the practicality is poor. SUMMARY

[0005] The technical problem to be solved by the utility model is to provide a line marking device for the surface of multilayer aluminum alloy composite material, which can effectively solve the problems in the prior art.

[0006] The utility model discloses a technical scheme adopted is: a kind of surface scribing marking device for multilayer aluminum alloy composite material, including base and the scribing box in the upper portion of base, the inside of scribing box is close to the side of connecting seat one and is equipped with connecting groove one, the side of scribing box is close to the side of connecting seat two and is equipped with connecting groove two, the inside of scribing box is close to the side of connecting seat one and is equipped with first pencil holder plate, the end of first pencil holder plate is close to the side of connecting seat one and is equipped with connecting buckle one, the end of first pencil holder plate is away from the side of connecting seat one and is equipped with connecting groove three, the inside of scribing box is close to the side of connecting seat two and is equipped with third pencil holder plate, the end of third pencil holder plate is close to the side of connecting seat two and is equipped with connecting buckle four, the end of third pencil holder plate is away from the side of connecting seat two and is equipped with connecting buckle three, second pencil holder plate is arranged between first pencil holder plate and third pencil holder plate, the end of second pencil holder plate is close to the end of first pencil holder plate and is equipped with connecting buckle two, the end of second pencil holder plate is close to the end of third pencil holder plate and is equipped with connecting groove four, the top of first pencil holder plate, second pencil holder plate and third pencil holder plate are fixedly installed with fixed column, the inside of fixed column is equipped with connecting sleeve, recess is equipped in the inside of connecting sleeve, the end of connecting sleeve is fixedly installed with groove two away from scribing box, scribing pen is arranged at the end of connecting sleeve close to scribing box, the side of scribing box close to base is equipped with round hole two.

[0007] Preferably, the side of the base close to the scribing box is provided with a scribing material, the end of the base close to the scribing box is fixedly installed with a fixing seat, the inside of the fixing seat is provided with a groove one, the side of the fixing seat close to the scribing box is provided with a connecting seat one and a connecting seat two, the outside of the fixing seat is provided with a fixing bolt, and the top of the first pencil holder plate, the second pencil holder plate and the third pencil holder plate is equidistantly provided with two rows of front and rear round holes one.

[0008] Through the groove one provided on the fixing seat, the scribing box can be quickly and accurately installed on the base during installation, and then fixed by the fixing bolt, thereby improving the stability of the device.

[0009] Preferably, the round holes one are distributed at the top of the first pencil holder plate, the second pencil holder plate and the third pencil holder plate, the number of the round holes one provided on the first pencil holder plate, the second pencil holder plate and the third pencil holder plate is the same as the number of the round holes two provided at the bottom of the scribing box, and each round hole one corresponds to a round hole two.

[0010] Through the above technical scheme, the number of scribing lines is effectively increased by setting the two rows of round holes one distributed in a staggered manner, and the device is more practical by equidistantly distributing the round holes one to meet the customization requirements of customers in actual operation. The number of the round holes one is the same as the number of the round holes two, and each round hole one corresponds to a round hole two, which facilitates the installation of the scribing pen during installation.

[0011] Preferably, the cross-sectional shape of the connecting groove 1 is the same as that of the connecting groove 2, the cross-sectional shape of the connecting groove 3 is the same as that of the connecting groove 4, the cross-sectional shape of the connecting buckle 1 is the same as that of the connecting buckle 4, the cross-sectional shape of the connecting buckle 2 is the same as that of the connecting buckle 3, the connecting groove 1 and the connecting groove 2 are plug-in installed with the connecting buckle 1 and the connecting buckle 4, and the connecting buckle 2 and the connecting buckle 3 are plug-in installed with the connecting groove 3 and the connecting groove 4.

[0012] Through the above technical solution, when installing the first pen clamp plate, the second pen clamp plate and the third pen clamp plate, the first pen clamp plate and the third pen clamp plate can be plugged and installed on the inner two ends of the marking box first, and then the second pen clamp plate can be plugged and installed between the first pen clamp plate and the third pen clamp plate. By setting the plug-in installation between them, the first pen clamp plate, the second pen clamp plate, the third pen clamp plate and the marking box can be quickly disassembled and assembled, effectively improving the installation efficiency.

[0013] Preferably, the connecting sleeve is rotatably mounted on the first pen clamp plate, the second pen clamp plate and the third pen clamp plate, the second card slot is snap-fitted to the fixed column, the cross section of the groove is the same as that of the marking pen, and the groove and the marking pen are plug-fitted.

[0014] Through the above technical solution, when installing the marking pen, by installing the marking pen in the groove and snap-fitting the second slot with the fixed column, the connecting sleeve and the fixed column can be fixed by rotating the connecting sleeve with the first circular hole, which facilitates the quick disassembly and assembly of the marking pen.

[0015] Preferably, the card slot 1 is adapted to the connecting seat 1 and the connecting seat 2 respectively, the connecting seat 1 and the connecting seat 2 are plug-in installed with the card slot 1, and the fixing bolt passes through the fixing seat and extends to the inside of the connecting seat 1 and the connecting seat 2.

[0016] Through the above technical solution, the marking box can be quickly positioned during installation by plugging the card slot 1 into the connecting seat 1 and the connecting seat 2 respectively, and the marking box can be fixedly installed on the fixing seat by the fixing bolts passing through the fixing seat and extending to the interior of the connecting seat 1 and the connecting seat 2.

[0017] Preferably, the radius of the second circular hole is smaller than the radius of the connecting sleeve, and the radius of the second circular hole is the same as the radius of the marking pen.

[0018] Through the above technical solution, by arranging the front and rear rows of circular holes on the first pen holder plate, the second pen holder plate and the third pen holder plate to be staggered, the number of marking lines is effectively increased. By distributing them at equal distances, they can be customized according to different customer requirements in actual operation, thereby improving the practicality of the device. By setting the number of circular holes one to be the same as the number of circular holes two and corresponding one to one, the installation of the marking pen can be facilitated during installation.

[0019] Compared with the prior art, the utility model provides a kind of for multilayer aluminium alloy composite material surface scribing mark device, with following beneficial effects:

[0020] 1, the device for multilayer aluminium alloy composite material surface scribing mark, by setting the staggered distribution of the front and rear two rows of round holes one, effectively improve the scribing number, in through equidistance distribution, can satisfy in actual operation according to the different requirements of customer customization, improve the practicability of device;

[0021] 2, the device for multilayer aluminium alloy composite material surface scribing mark, by inserting and installing scribing pen in groove, and the buckle connection of slot two and fixed column, can be connected with the rotary connection of round hole one, the fixed and disassembly of connecting sleeve can be realized, through equidistance distribution between round hole one, also be convenient in later use according to customer demand through the number of scribing pen disassembly to adjust scribing spacing, and practicability is higher;

[0022] 3. the device for multilayer aluminium alloy composite material surface scribing mark, by the design of detachable first pen clamping plate, second pen clamping plate and third pen clamping plate, first pen clamping plate, second pen clamping plate and third pen clamping plate can be quickly installed in the inside of scribing box when assembling, through the detachable design of connecting sleeve and scribing pen, connecting sleeve and scribing pen can form a module, and be clamped into the inside of first pen clamping plate, second pen clamping plate and third pen clamping plate, can realize the clamping of multiple modular connecting sleeves and scribing pens, and through the buckle connection of the card slot two on connecting sleeve and fixed column, the fixation of scribing pen is realized, and the number of round hole one on pen clamping plate is same with the number of round hole two on scribing box and one-to-one correspondence, can realize that multiple modular connecting sleeves and scribing pens are installed in the inside of first pen clamping plate, second pen clamping plate and third pen clamping plate simultaneously, and are installed in the inside of scribing box simultaneously. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the three-dimensional structure diagram of the utility model Figure 1 ;

[0024] Figure 2 It is the three-dimensional structure diagram of the utility model Figure 2 ;

[0025] Figure 3 It is the split structure diagram of the utility model fixed seat, connecting seat one and connecting seat two

[0026] Figure 4 It is the split structure diagram of the utility model scribing box

[0027] Figure 5 It is the installation structure diagram of scribing pen and pen clamping plate of the utility model

[0028] Figure 6 It is the utility model Figure 5 Middle A is a schematic diagram of the enlarged structure;

[0029] Figure 7 This is a schematic diagram of the installation structure of the connecting sleeve and the marking pen of the utility model.

[0030] Among them: 1. Base; 2. Marking material; 3. Fixed seat; 4. Slot 1; 5. Connecting seat 1; 6. Connecting seat 2; 7. Fixing bolt; 8. Marking box; 9. Connecting slot 1; 10. Connecting slot 2; 11. First pen clamp plate; 12. Connecting buckle 1; 13. Connecting slot 3; 14. Second pen clamp plate; 15. Connecting buckle 2; 16. Connecting slot 4; 17. Third pen clamp plate; 18. Connecting buckle 3; 19. Connecting buckle 4; 20. Round hole 1; 21. Fixed column; 22. Connecting sleeve; 23. Groove; 24. Slot 2; 25. Marking pen; 26. Round hole 2. DETAILED DESCRIPTION

[0031] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0032] Example 1: Figure 1-7As shown, the utility model provides a marking device for marking the surface of a multi-layer aluminum alloy composite material, including a base 1 and a marking box 8 located on the upper part of the base 1, a connecting groove 9 is provided on the side of the marking box 8 near the connecting seat 1 5, a connecting groove 2 10 is provided on the side of the marking box 8 near the connecting seat 2 6, a first pen clamping plate 11 is provided on the side of the marking box 8 near the connecting seat 1 5, a connecting buckle 12 is provided on the end of the first pen clamping plate 11 near the connecting seat 1 5, a connecting groove 3 13 is provided on the end of the first pen clamping plate 11 away from the connecting seat 1 5, a third pen clamping plate 17 is provided on the side of the marking box 8 near the connecting seat 2 6, a connecting buckle 4 19 is provided on the end of the third pen clamping plate 17 near the connecting seat 2 6, and a connecting buckle 4 19 is provided on the end of the third pen clamping plate 17 away from the connecting seat A connecting buckle three 18 is provided at one end away from the connecting seat two 6, a second pen clamp plate 14 is provided between the first pen clamp plate 11 and the third pen clamp plate 17, a connecting buckle two 15 is provided at one end of the second pen clamp plate 14 close to the first pen clamp plate 11, a connecting groove four 16 is provided at one end of the second pen clamp plate 14 close to the third pen clamp plate 17, a fixing column 21 is fixedly installed on the top of the first pen clamp plate 11, the second pen clamp plate 14 and the third pen clamp plate 17, a connecting sleeve 22 is provided on the inner side of the fixing column 21, a groove 23 is provided on the inner side of the connecting sleeve 22, a card slot two 24 is fixedly installed on the end of the connecting sleeve 22 away from the marking box 8, a marking pen 25 is provided at the end of the connecting sleeve 22 close to the marking box 8, and a round hole two 26 is provided on a side of the marking box 8 close to the base 1.

[0033] Specifically, a marking material 2 is provided on one side of the base 1 close to the marking box 8, a fixing seat 3 is fixedly installed on one end of the base 1 close to the marking box 8, a card slot 4 is provided on the inner side of the fixing seat 3, a connecting seat 5 and a connecting seat 2 6 are provided on the side of the fixing seat 3 close to the marking box 8, a fixing bolt 7 is provided on the outer side of the fixing seat 3, and two rows of front and rear circular holes 20 are provided at equal distances on the top of the first pen clamp plate 11, the second pen clamp plate 14 and the third pen clamp plate 17. The advantage is that the card slot 4 provided on the fixing seat 3 can quickly and accurately install the marking box 8 on the base 1 during installation, and then fix it with the fixing bolt 7 to improve the stability of the device.

[0034] Specifically, the circular holes 20 are staggered on the top of the first pen-holding plate 11, the second pen-holding plate 14 and the third pen-holding plate 17, and the number of the circular holes 20 opened on the first pen-holding plate 11, the second pen-holding plate 14 and the third pen-holding plate 17 is the same as the number of the circular holes 26 opened on the bottom of the marking box 8, and corresponds one-to-one with the circular holes 26. The advantage is that by setting the front and rear rows of circular holes 20 in a staggered distribution, the number of marking lines is effectively increased. By distributing them at equal distances, it can meet the customization according to different customer requirements in actual operation, thereby improving the practicality of the device. By setting the number of circular holes 20 to be the same as the number of circular holes 26 and corresponding one-to-one, the installation of the marking pen 25 can be facilitated during installation.

[0035] Specifically, the cross-sectional shape of connecting groove 19 is the same as that of connecting groove 2 10, the cross-sectional shape of connecting groove 3 13 is the same as that of connecting groove 4 16, the cross-sectional shape of connecting buckle 12 is the same as that of connecting buckle 4 19, the cross-sectional shape of connecting buckle 2 15 is the same as that of connecting buckle 3 18, connecting groove 19 and connecting groove 2 10 are plug-in installed with connecting buckle 1 12 and connecting buckle 4 19, and connecting buckle 2 15 and connecting buckle 3 18 are plug-in installed with connecting groove 3 13 and connecting groove 4 16. The advantage is that when installing the first pen clamp plate 11, the second pen clamp plate 14 and the third pen clamp plate 17, the first pen clamp plate 11 and the third pen clamp plate 17 can be plug-in installed on the inner ends of the marking box 8 first, and then the second pen clamp plate 14 can be plug-in installed between the first pen clamp plate 11 and the third pen clamp plate 17. By setting the plug-in installation between them, the first pen clamp plate 11, the second pen clamp plate 14, the third pen clamp plate 17 and the marking box 8 can be quickly disassembled and assembled, effectively improving the installation efficiency.

[0036] Example 2: Figure 3-7 As shown, it is an improvement to the previous embodiment.

[0037] Specifically, the connecting sleeve 22 is rotatably mounted on the first pen clamp plate 11, the second pen clamp plate 14 and the third pen clamp plate 17, the second card slot 24 is snap-fitted to the fixed column 21, the cross-section of the groove 23 is the same as the cross-section of the marking pen 25, and the groove 23 and the marking pen 25 are plug-fitted. The advantage is that when installing the marking pen 25, by installing the marking pen 25 in the groove 23 and snap-fitting the second card slot 24 to the fixed column 21, the connecting sleeve 22 and the fixed column 21 can be fixed by the rotating connection between the connecting sleeve 22 and the circular hole 1 20, which facilitates the quick disassembly and assembly of the marking pen 25.

[0038] Specifically, the card slot 1 4 is respectively adapted to the connecting seat 1 5 and the connecting seat 2 6, and the connecting seat 1 5 and the connecting seat 2 6 are plug-in installed with the card slot 1 4, and the fixing bolt 7 passes through the fixing seat 3 and extends to the interior of the connecting seat 1 5 and the connecting seat 2 6. The advantage is that the marking box 8 can be quickly positioned during installation through the plug-in installation of the card slot 1 4 and the connecting seat 1 5 and the connecting seat 2 6, and the fixing bolt 7 passes through the fixing seat 3 and extends to the interior of the connecting seat 1 5 and the connecting seat 2 6, and the marking box 8 can be fixedly installed with the fixing seat 3.

[0039] Specifically, the radius of the second circular hole 26 is smaller than the radius of the connecting sleeve 22, and the radius of the second circular hole 26 is the same as the radius of the marking pen 25. The advantage is that when the marking pen 25 is installed, the marking pen 25 is installed inside the connecting sleeve 22 by plugging. The connecting sleeve 22 passes through the first circular hole 20 and extends to the top of the second circular hole 26. By setting the radius of the connecting sleeve 22 to be larger than the radius of the second circular hole 26, the marking pen 25 is limited, and the radius of the second circular hole 26 is the same as the radius of the marking pen 25, which ensures the stability of the marking pen 25 during the marking process and prevents the marking from bending.

[0040] Working principle: When in use, during installation, the marking box 8 can be quickly positioned during installation by plugging the card slot 1 4 with the connecting seat 1 5 and the connecting seat 2 6 respectively, and the fixing bolt 7 passes through the fixing seat 3 and extends to the inside of the connecting seat 1 5 and the connecting seat 2 6, so that the marking box 8 and the fixing seat 3 can be fixedly installed. The design of the detachable first pen clamp plate 11, the second pen clamp plate 14 and the third pen clamp plate 17 can quickly be assembled. The second pen holder plate 14 and the third pen holder plate 17 are installed inside the marking box 8. Through the detachable design of the connecting sleeve 22 and the marking pen 25, the connecting sleeve 22 and the marking pen 25 can form a module and be inserted into the first pen holder plate 11, the second pen holder plate 14 and the third pen holder plate 17. It is possible to insert multiple modular connecting sleeves 22 and marking pens 25, and the marking pen 25 is fixed by the buckle connection of the second card slot 24 on the connecting sleeve 22 and the fixing column 21. At the same time, the circular hole on the pen holder plate The number of the first and second circular holes 20 is the same as the number of the second circular holes 26 on the marking box 8 and corresponds one to one, so that multiple modular connecting sleeves 22 and marking pens 25 can be installed inside the first pen clamping plate 11, the second pen clamping plate 14 and the third pen clamping plate 17 at the same time, and are installed inside the marking box 8 at the same time. By arranging the staggered distribution of the circular holes 20 in the front and rear rows, the number of marking lines is effectively increased. By inserting the marking pen 25 into the groove 23 and snapping the second card slot 24 with the fixing column 21, the connecting sleeve 22 and the fixing column 21 can be fixed or removed by rotating the connecting sleeve 22 and the circular hole 1 20. When fixing, it is only necessary to rotate the second card slot 24 on the connecting sleeve 22 to the outside of the fixing column 21. The equidistant distribution between the circular holes 1 20 also makes it convenient to adjust the marking spacing according to customer needs by disassembling and assembling the number of marking pens 25 during later use. The practicality is high. Even if a marking pen 25 breaks down later, the single marking pen 25 can be replaced, which is practical.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A marking device for marking the surface of a multi-layer aluminum alloy composite material, comprising a base (1) and a marking box (8) located on the upper portion of the base (1), characterized in that: The marking box (8) is provided with a connection groove (9) on one side close to the connection seat (5), and a connection groove (10) is provided on one side close to the connection seat (6). The marking box (8) is provided with a first pen clamping plate (11) on one side close to the connection seat (5), and a connection buckle (12) is provided on one end of the first pen clamping plate (11) close to the connection seat (5). The end of the first pen clamping plate (11) away from the connection seat (5) is provided with a connection groove (13). The marking box (8) is provided with a third pen clamping plate (17) on one side close to the connection seat (6), and a connection buckle (4) is provided on one end of the third pen clamping plate (17) close to the connection seat (6). The end of the third pen clamping plate (17) away from the connection seat (6) is provided with a connection buckle (18). The first pen clamping plate (11) is provided with a connection buckle (12) on one end of the first pen clamping plate (11) away from the connection seat (5). ) and the third pen clamping plate (17), a second pen clamping plate (14) is provided between the first pen clamping plate (11) and the third pen clamping plate (17), a connecting buckle 2 (15) is provided at one end of the second pen clamping plate (14) close to the first pen clamping plate (11), a connecting groove 4 (16) is provided at one end of the second pen clamping plate (14) close to the third pen clamping plate (17), a fixing column (21) is fixedly installed on the top of the first pen clamping plate (11), the second pen clamping plate (14) and the third pen clamping plate (17), a connecting sleeve (22) is provided on the inner side of the fixing column (21), a groove (23) is provided on the inner side of the connecting sleeve (22), a card slot 2 (24) is fixedly installed at one end of the connecting sleeve (22) away from the marking box (8), a marking pen (25) is provided at one end of the connecting sleeve (22) close to the marking box (8), and a round hole 2 (26) is provided on one side of the marking box (8) close to the base (1).

2. The device for marking a surface of a multi-layer aluminum alloy composite material according to claim 1, characterized in that: A marking material (2) is provided on one side of the base (1) close to the marking box (8), a fixing seat (3) is fixedly installed on one end of the base (1) close to the marking box (8), a card slot (4) is provided on the inner side of the fixing seat (3), a connecting seat (5) and a connecting seat (6) are provided on the side of the fixing seat (3) close to the marking box (8), a fixing bolt (7) is provided on the outer side of the fixing seat (3), and two rows of circular holes (20) are provided at equal distances on the tops of the first pen clamp plate (11), the second pen clamp plate (14) and the third pen clamp plate (17).

3. The marking device for the surface of a multi-layer aluminum alloy composite material according to claim 2, characterized in that: The circular holes (20) are staggeredly distributed on the top of the first pen-holding plate (11), the second pen-holding plate (14) and the third pen-holding plate (17), and the number of the circular holes (20) opened on the first pen-holding plate (11), the second pen-holding plate (14) and the third pen-holding plate (17) is the same as the number of the circular holes (26) opened on the bottom of the marking box (8), and corresponds one to one with the circular holes (26).

4. The device for marking a surface of a multi-layer aluminum alloy composite material according to claim 3, characterized in that: The cross-sectional shape of the connecting groove 1 (9) is the same as that of the connecting groove 2 (10), the cross-sectional shape of the connecting groove 3 (13) is the same as that of the connecting groove 4 (16), the cross-sectional shape of the connecting buckle 1 (12) is the same as that of the connecting buckle 4 (19), the cross-sectional shape of the connecting buckle 2 (15) is the same as that of the connecting buckle 3 (18), the connecting groove 1 (9) and the connecting groove 2 (10) are plug-in mounted with the connecting buckle 1 (12) and the connecting buckle 4 (19), and the connecting buckle 2 (15) and the connecting buckle 3 (18) are plug-in mounted with the connecting groove 3 (13) and the connecting groove 4 (16).

5. The device for marking a surface of a multi-layer aluminum alloy composite material according to claim 4, characterized in that: The connecting sleeve (22) is rotatably mounted on the first pen clamping plate (11), the second pen clamping plate (14) and the third pen clamping plate (17); the second clamping slot (24) is plug-connected to the fixing column (21); the cross section of the groove (23) is the same as that of the marking pen (25); and the groove (23) and the marking pen (25) are plug-connected.

6. The marking device for the surface of a multi-layer aluminum alloy composite material according to claim 5, characterized in that: The card slot 1 (4) is respectively adapted to the connecting seat 1 (5) and the connecting seat 2 (6); the connecting seat 1 (5) and the connecting seat 2 (6) are plug-connected to the card slot 1 (4); the fixing bolt (7) passes through the fixing seat (3) and extends to the interior of the connecting seat 1 (5) and the connecting seat 2 (6).

7. The marking device for the surface of a multi-layer aluminum alloy composite material according to claim 6, characterized in that: The radius of the second circular hole (26) is smaller than the radius of the connecting sleeve (22), and the radius of the second circular hole (26) is the same as the radius of the marking pen (25).

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