High-adaptability sleeve cylinder of 3D printer

Abstract

The invention relates to the technical field of 3D printing, and discloses a high-adaptability sleeve cylinder of a 3D printer, the high-adaptability sleeve cylinder comprises a cylinder body, a plurality of sleeve cylinder fixing mechanisms are evenly distributed on the outer wall of the cylinder body in the circumferential direction of the cylinder body, each sleeve cylinder fixing mechanism comprises a pre-tightening base, a jacking block and a stud, and the pre-tightening bases are connected to the side wall of the cylinder body through belleville springs; jacking blocks are arranged on the upper portion and the lower portion of the outer wall of the pre-tightening base in a contact mode, first wedge-shaped faces are arranged on the end faces, close to the pre-tightening base, of the jacking blocks, second wedge-shaped faces are arranged on the end faces, close to the pre-tightening base, of the pre-tightening base, and the thickness of the pre-tightening base at the second wedge-shaped faces is gradually increased in the direction close to the center of the pre-tightening base; the first wedge-shaped surface is in contact fit with the second wedge-shaped surface, the stud movably penetrates through the pre-tightening base, the two jacking blocks are arranged on the stud in a sleeving mode, the stud is sleeved with a nut in a threaded mode, and the nut is located below the jacking blocks. And on the premise that original equipment is not changed or replaced, detachable installation is completed, and the advantage of being high in adaptability is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of 3D printing, in particular to a high-adaptability sleeve cylinder of a 3D printer. Background Art

[0002] The existing metal 3D printing equipment will be equipped with a forming cylinder. The 3D model to be printed is printed and formed in the forming cylinder. The size of the forming cylinder determines the amount of metal powder used and the forming size of the 3D printed model. When designing the forming cylinder, the size of the forming cylinder (forming area and depth) will be defined first, so the naming of the 3D printing equipment usually contains the forming size information. At present, the cylinder structure of the forming cylinder is a cylindrical or square barrel-shaped cylinder body, and there is a piston inside the cylinder body. The piston includes a heating base plate and a printing substrate. The piston is driven by a lift to rise and fall. Above the piston is a powder accumulation area and a printing area (a layer of powder is accumulated and a layer of model is printed, and the piston drops by one tenth of the height, and so on). The forming cylinder and equipment of the existing technology are integrated, non-detachable, non-replaceable, and the size of the forming size cannot be changed. When the user needs to print a smaller model, the metal powder also needs to be spread over the entire printing format, which will greatly cause a waste of metal powder, and will also increase the corresponding labor cost and material cost. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a highly adaptable cylinder sleeve for a 3D printer, which is designed to complete detachable installation without modifying or replacing the original equipment and has the advantage of high adaptability.

[0004] The objective of the present invention is achieved through the following technical solutions: a highly adaptable sleeve cylinder for a 3D printer, comprising a cylinder body, wherein the outer wall of the cylinder body is evenly distributed with a plurality of sleeve cylinder fixing mechanisms along its own circumferential direction, wherein the sleeve cylinder fixing mechanisms include a pre-tightening base, a tightening block, a stud and a threaded pin, wherein the end face of the pre-tightening base close to the cylinder body is provided with a pin hole, one end of the threaded pin is a stud, and the other end is a threaded hole, the stud end of the threaded pin is threadedly connected to the cylinder body, and the other end is slidably adapted in the pin hole, the end face of the pre-tightening base away from the cylinder body is provided with a countersunk hole, a countersunk screw is arranged in the countersunk hole, and the end thread of the countersunk screw is threadedly adapted in the threaded hole of the threaded pin, a butterfly spring is arranged between the pre-tightening base and the cylinder body, and the The outer wall of the pre-tightening base is contacted with the tightening block at the top and bottom, the end face of the tightening block close to the pre-tightening base is provided with a first wedge surface, and the end face of the pre-tightening base close to the tightening block is provided with a second wedge surface, the thickness of the pre-tightening base at the second wedge surface gradually increases along the direction close to its own center, the first wedge surface and the second wedge surface are in contact and adapted, the pre-tightening base is penetrated by a strip through hole along the height direction of the cylinder body, the stud passes through the upper tightening block, the strip through hole and the lower tightening block in turn, the upper tightening block is slidably mounted on the stud, and the lower tightening block is threadedly mounted on the stud, a nut is threadedly mounted on the stud, and the nut is located below the tightening block.

[0005] In some embodiments, a printing slot is formed in the central area of ​​the top of the cylinder body, and tooling threaded holes are formed on both sides of the printing slot on the top of the cylinder body.

[0006] In some embodiments, the cylinder body is provided with a plurality of adjustment slots extending through the outer side of the printing slot, and the number of the adjustment slots is the same as the number of the studs and corresponds one to one.

[0007] In some embodiments, a cover plate is connected to the top of the cylinder body, the inner wall of the cover plate is tightly fitted to the outer wall of the printing slot, a circular sealing plate is mounted on the cover plate, the circular sealing plate is connected to the printer table by screws, and felt is arranged under the circular sealing plate.

[0008] In some embodiments, an adjustment plate and a printing substrate assembly are sequentially arranged in the printing slot from bottom to top, three leveling slope support blocks are arranged on the top surface of the adjustment plate, the three leveling slope support blocks are arranged in an isosceles triangle, the leveling slope support blocks are connected to the adjustment plate through support block screws, the printing substrate assembly includes a leveling substrate, three leveling grooves are opened through the leveling substrate, the three leveling grooves are respectively located directly above the three leveling slope support blocks, three groups of threaded holes are opened on the side wall of the leveling substrate, the three groups of threaded holes are respectively connected to the three leveling grooves, the inner threads of the threaded holes are adapted to leveling screws, the end of the leveling screw close to the leveling slope support block is conical, the top surface of the leveling slope support block is provided with a leveling inclined surface, and the conical surface of the leveling screw contacts the leveling inclined surface.

[0009] In some embodiments, a plurality of round-headed columns are fixed on the top of the adjustment plate, and a locking circular hole is formed through the position of the leveling substrate corresponding to the round-headed columns, and a locking screw is threadedly connected to one side of the locking circular hole of the leveling substrate.

[0010] In some embodiments, the leveling substrate is provided with an L-shaped groove at the position of the locking circular hole, the L-shaped groove passes through the middle of the locking circular hole, and one end of the L-shaped groove passes through one side of the leveling substrate, the locking screw is located on one side of the locking circular hole, and when the locking screw is tightened on the leveling substrate, the leveling substrate is deformed and clamps the round head column.

[0011] In some embodiments, the printing substrate assembly further comprises a printing substrate, a screw hole is formed at the bottom of the printing substrate, a connecting screw is passed through the bottom of the leveling substrate, and the connecting screw thread is adapted to fit in the screw hole.

[0012] The beneficial effects of the present invention are:

[0013] 1. Tighten the studs to move the tightening block downward so that the outer wall of the tightening block fits tightly with the original cylinder wall of the printer, thereby achieving the function of fixing the cylinder sleeve. The detachable installation can be completed without changing or replacing the original equipment, which has the advantage of high adaptability.

[0014] 2. The setting of the cover plate and the circular sealing plate eliminates the gap between the cylinder body and the original cylinder of the printer, preventing the printing powder from leaking into the original cylinder through the gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a cylinder body in a highly adaptable sleeve cylinder of a 3D printer of the present invention;

[0016] Figure 2 It is a front view of a cylinder body in a highly adaptable sleeve cylinder of a 3D printer of the present invention;

[0017] Figure 3 This is a schematic diagram of the internal structure of a cylinder body in a highly adaptable sleeve cylinder of a 3D printer of the present invention;

[0018] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 It is a structural schematic diagram of a pre-tightening base in a highly adaptable sleeve cylinder of a 3D printer of the present invention;

[0020] Figure 6 It is a partial structural schematic diagram of a highly adaptable sleeve cylinder of a 3D printer of the present invention;

[0021] Figure 7 It is a structural schematic diagram of a high-adaptability cylinder body middle adjustment plate of a 3D printer of the present invention;

[0022] Figure 8 It is a structural schematic diagram of a printing substrate assembly in a cylinder body of a 3D printer with high adaptability of the present invention;

[0023] Fig. 9 It is a structural schematic diagram of a printing substrate in a highly adaptable sleeve cylinder of a 3D printer of the present invention;

[0024] Fig.10 It is a schematic diagram of the installation of a cylinder body in a highly adaptable sleeve cylinder of a 3D printer of the present invention;

[0025] Fig.11 It is a structural schematic diagram of a cylinder body in a highly adaptable sleeve cylinder of a 3D printer of the present invention;

[0026] In the figure, 1-cylinder body, 2-pre-tightening base, 3-tightening block, 4-stud, 5-butterfly spring, 6-first wedge surface, 7-second wedge surface, 8-nut, 9-printing groove, 10-tooling threaded hole, 11-adjusting groove, 12-cover plate, 13-circular sealing plate, 14-adjusting plate, 15-leveling slope support block, 16-leveling base plate, 17-leveling groove, 18-threaded hole, 19-leveling screw, 20-leveling inclined surface, 21-round head column, 22-locking circular hole, 23-locking screw, 24-printing base plate, 25-screw hole, 26-connecting screw, 27-L-shaped groove, 28-tooling plate, 29-lifting ring, 30-pin hole, 31-threaded pin, 32-countersunk hole, 33-countersunk head screw, 34-strip through hole. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0028] like Figures 1 to 11 As shown, a highly adaptable sleeve cylinder of a 3D printer includes a cylinder body 1. The outer wall of the cylinder body 1 is evenly distributed with a plurality of sleeve cylinder fixing mechanisms along its own circumferential direction. The sleeve cylinder fixing mechanisms include a pre-tightening base 2, a tightening block 3, a stud 4 and a threaded pin 31. The end surface of the pre-tightening base 2 close to the cylinder body 1 is provided with a pin hole 30. One end of the threaded pin 31 is a stud and the other end is a threaded hole. The stud end of the threaded pin 31 is threadedly connected to the cylinder body 1, and the other end is slidably adapted in the pin hole 30. The end surface of the pre-tightening base 2 away from the cylinder body 1 is provided with a countersunk hole 32. A countersunk screw 33 is arranged in the countersunk hole 32. The countersunk screw 33 The end thread of the pre-tightening base 2 is adapted to the threaded hole of the threaded pin 31, a butterfly spring 5 is arranged between the pre-tightening base 2 and the cylinder body 1, and the outer wall of the pre-tightening base 2 is contacted with a tightening block 3 at the top and bottom, and the end face of the tightening block 3 close to the pre-tightening base 2 is provided with a first wedge surface 6, and the end face of the pre-tightening base 2 close to the tightening block 3 is provided with a second wedge surface 7. The thickness of the pre-tightening base 2 at the second wedge surface 7 gradually increases in the direction close to its own center, and the first wedge surface 6 is contacted and adapted with the second wedge surface 7. The pre-tightening base 2 is penetrated with a strip through hole 34 along the height direction of the cylinder body 1, and the stud 4 passes through the top of the top in sequence. The tightening block 3, the strip through hole 34 and the top tightening block 3 below allow the stud 4 to have a certain moving space in the strip through hole 34. The top tightening block 3 above is slidably mounted on the stud 4, and the top tightening block 3 below is threadedly mounted on the stud 4. The stud 4 is threadedly mounted with a nut 8, and the nut 8 is located below the top tightening block 3. The cylinder body 1 is placed in the original cylinder of the printer, and the stud 4 is screwed. A lead screw nut sub-mechanism is formed between the stud 4 and the top tightening block 3 below, so that the top tightening block 3 below is displaced in the longitudinal direction. At the same time, the top tightening block 3 is blocked by the pre-tightening base 2, so that the stud 4 adapts to the strip through hole 34. After the position of the stud 4 is changed, the upper tightening block 3 also produces longitudinal displacement under the drive of the stud 4, thereby causing the two tightening blocks 3 to simultaneously undergo longitudinal displacement, and the movement directions are opposite, causing the relative distance between the two tightening blocks 3 in the longitudinal direction to change. Through the conversion of the first wedge surface 6 and the second wedge surface 7, the change in the relative distance between the two tightening blocks 3 in the longitudinal direction is transformed into the change in the relative distance between the tightening block 3 and the pre-tightening base 2 in the transverse direction, thereby adapting to the inner diameter of the original cylinder, so that the outer wall of the tightening block 3 is closely fitted with the original cylinder wall of the printer, thereby achieving the function of fixing the sleeve cylinder. The butterfly spring 5 is adapted to and absorbs the size change of the tightening block 3 caused by thermal expansion and contraction during use, thereby ensuring that the outer wall of the tightening block 3 is always closely fitted with the original cylinder wall of the printer, thereby achieving the function of fixing the sleeve cylinder, and completing the detachable installation without changing or replacing the original equipment, which has the advantage of high adaptability. Preferably, the outer wall of the tightening block 3 is arc-shaped, has a large contact area with the original cylinder of the printer, and improves the fixing strength of the cylinder body.

[0029] Furthermore, if Figure 1 , Fig.10 and Fig.11As shown, a printing slot 9 is provided in the central area of ​​the top of the cylinder body 1, and tooling threaded holes 10 are provided on both sides of the printing slot 9 on the top of the cylinder body 1. A plurality of adjustment slots 11 are provided through the outer side of the printing slot 9 of the cylinder body 1, and the number of the adjustment slots 11 is the same as the number of the studs 4 and corresponds one to one. The setting of the tooling threaded holes 10 facilitates the installation of the cylinder body 1. Specifically, a tooling plate 28 is provided, and a threaded hole is provided through the tooling plate 28. A hanging ring 29 is threadedly connected in the threaded hole and the tooling threaded hole 10, so that the sleeve cylinder is connected to the tooling plate 28. The length of the tooling plate 28 is greater than the inner diameter of the original cylinder of the printer. The tooling plate 28 is placed on the original cylinder of the printer so that the sleeve cylinder enters the original cylinder, thereby suspending and supporting the sleeve cylinder, and then a tool is used to penetrate the adjusting slot 11 to tighten the studs 4, so that the tightening block 3 is pressed against the inner wall of the original cylinder to complete the installation.

[0030] In some embodiments, Figure 1 and Fig.11 As shown, a cover plate 12 is connected to the top of the cylinder body 1, and the inner wall of the cover plate 12 fits tightly against the outer wall of the printing slot 9. A circular sealing plate 13 is mounted on the cover plate 12, and the circular sealing plate 13 is connected to the printer table by screws. A felt is arranged under the circular sealing plate 13. When the cylinder body 1 is installed, the cover plate 12 and the circular sealing plate 13 are installed in sequence, and the inner wall of the circular sealing plate 13 fits tightly against the outer wall of the cover plate 12, and the outer wall of the circular sealing plate 13 fits against the inner wall of the original cylinder of the printer, thereby eliminating the gap between the cylinder body 1 and the original cylinder of the printer, and preventing printing powder from leaking into the original cylinder through the gap.

[0031] In some embodiments, Figures 1 to 9As shown, an adjustment plate 14 and a printing substrate assembly are sequentially arranged in the printing slot 9 from bottom to top, and three leveling slope support blocks 15 are arranged on the top surface of the adjustment plate 14, and the three leveling slope support blocks 15 are arranged in an isosceles triangle, and the leveling slope support blocks 15 are connected to the adjustment plate 14 through support block screws, and the printing substrate assembly includes a leveling substrate 16, and three leveling grooves 17 are opened through the leveling substrate 16, and the three leveling grooves 17 are respectively located directly above the three leveling slope support blocks 15, and three groups of threaded holes 18 are opened on the side wall of the leveling substrate 16, and the three groups of threaded holes 18 are respectively connected to the three leveling grooves 17, and the inner threads of the threaded holes 18 are adapted to leveling screws 19, and the end of the leveling screw 19 close to the leveling slope support block 15 is conical, and the top surface of the leveling slope support block 15 is provided with a leveling slope 20, and the leveling screw 19 The conical surface contacts the leveling slope 20, and the leveling slope support block 15 and the leveling screw 19 form a leveling component. There are three groups of leveling components. The leveling of one surface is achieved by a three-point leveling method. The specific leveling process is to install a hot base plate adapter (belonging to the prior art) in the printing slot 9, install the leveling plate 14 in the printing slot 9, and connect and fix it with the hot base plate adapter, and then place the leveling substrate 16 on the leveling plate 14, and use a measuring tool to measure the height errors at the three leveling screws 19 in turn, and rotate the corresponding leveling screw 19 according to the measurement results. In the process of rotating the leveling screw 19, the contact position between the conical surface of the leveling screw 19 and the leveling slope 20 of the leveling slope support block 15 will change, thereby driving the leveling substrate 16 to form a change in the height direction to complete the leveling operation of the printing substrate assembly.

[0032] In some embodiments, Figures 6 to 9 As shown, a plurality of round-headed columns 21 are fixed on the top of the leveling plate 14, and a locking circular hole 22 is formed through the position of the round-headed column 21 of the leveling base plate 16, and a locking screw 23 is threadedly connected to one side of the locking circular hole 22 of the leveling base plate 16, and an L-shaped groove 27 is formed through the position of the locking circular hole 22 of the leveling base plate 16, and the L-shaped groove 27 passes through the middle of the locking circular hole 22, and one end of the L-shaped groove 27 passes through one side of the leveling base plate 16, and the locking screw 23 is located on one side of the locking circular hole 22. When the locking screw 23 is tightened in the leveling When on the substrate 16, the leveling substrate 16 is deformed and clamped with the round head column 21, and the round head column 21 of the adjustment plate 14 is inserted into the locking circular hole 22. After the leveling of the leveling substrate 16 is completed by rotating the leveling screw 19, the locking screw 23 is tightened, and the L-shaped groove 27 forms a weak area in the locking circular hole 22 of the leveling substrate 16. The weak area is deformed by tightening the locking screw 23, so that the inner wall of the locking circular hole 22 is tightly attached to the round head column 21 to complete the locking, so that the leveling substrate 16 can be locked on the adjustment plate 14 to maintain stability after leveling.

[0033] In some embodiments, Figure 6 and Fig. 9As shown, the printing substrate assembly also includes a printing substrate 24, a screw hole 25 is opened at the bottom of the printing substrate 24, and a connecting screw 26 is penetrated at the bottom of the leveling substrate 16, and the connecting screw 26 is threadedly adapted in the screw hole 25. Since the printing substrate assembly is a consumable, the model needs to be cut from the printing substrate 24, and the thickness of the printing substrate 24 needs to be consumed. Therefore, the printing substrate assembly is set to two parts, namely the leveling substrate 16 (connecting part) and the printing substrate 24 (consumable part), so as to reduce the replacement cost of the printing substrate assembly.

[0034] To sum up, the leveling part and the connecting part of the leveling plate 14 and the leveling substrate 16 are both arranged on the side of the leveling substrate 16, and the printing substrate 24 and the leveling substrate 16 are also connected from the bottom, so that the top surface of the printing substrate 24 is an overall plane, and full-format printing can be achieved.

[0035] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention; and it is known to those skilled in the art that the beneficial effects to be achieved by the present invention are only to achieve better beneficial effects under specific circumstances compared with the current implementation schemes in the prior art, rather than to directly achieve the best use effect in the industry.

[0036] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A highly adaptable cylinder for a 3D printer, characterized in that: The invention comprises a cylinder body (1), wherein the outer wall of the cylinder body (1) is evenly distributed with a plurality of cylinder-sleeve fixing mechanisms along its own circumferential direction, wherein the cylinder-sleeve fixing mechanisms comprise a pre-tightening base (2), a tightening block (3), a stud (4) and a threaded pin (31), wherein a pin hole (30) is provided on the end surface of the pre-tightening base (2) close to the cylinder body (1), wherein one end of the threaded pin (31) is a stud and the other end is a threaded hole, and the stud end of the threaded pin (31) is threadedly connected to the cylinder body (1) ), the other end of which is slidably adapted in the pin hole (30), a countersunk hole (32) is provided on the end surface of the pre-tightening base (2) away from the cylinder body (1), a countersunk screw (33) is provided in the countersunk hole (32), and the end thread of the countersunk screw (33) is threadedly adapted in the threaded hole of the threaded pin (31), a butterfly spring (5) is provided between the pre-tightening base (2) and the cylinder body (1), and the outer wall of the pre-tightening base (2) is provided with a contact at the top and the bottom. The tightening block (3) is provided with a first wedge-shaped surface (6) on the end surface of the tightening block (3) close to the pre-tightening base (2), and the pre-tightening base (2) is provided with a second wedge-shaped surface (7) on the end surface of the tightening block (3). The thickness of the pre-tightening base (2) at the second wedge-shaped surface (7) gradually increases in a direction close to its own center, and the first wedge-shaped surface (6) and the second wedge-shaped surface (7) are in contact and fit. The pre-tightening base (2) is provided with a strip-shaped through hole (34) penetrating along the height direction of the cylinder body (1). The stud (4) passes through the upper tightening block (3), the strip-shaped through hole (34) and the lower tightening block (3) in sequence. The upper tightening block (3) is slidably mounted on the stud (4), and the lower tightening block (3) is threadedly mounted on the stud (4). A nut (8) is threadedly mounted on the stud (4), and the nut (8) is located below the tightening block (3).

2. A highly adaptable cylinder sleeve for a 3D printer according to claim 1, characterized in that: A printing slot (9) is provided in the central area of ​​the top of the cylinder body (1), and tooling threaded holes (10) are provided on both sides of the printing slot (9) at the top of the cylinder body (1).

3. The high-adaptability cylinder sleeve of a 3D printer according to claim 2, characterized in that: The cylinder body (1) is provided with a plurality of adjustment grooves (11) extending through the outer side of the printing groove (9), and the number of the adjustment grooves (11) is the same as the number of the studs (4) and corresponds one to one.

4. The high-adaptability cylinder sleeve of a 3D printer according to claim 3, characterized in that: A cover plate (12) is connected to the top of the cylinder body (1), the inner wall of the cover plate (12) is tightly fitted to the outer wall of the printing slot (9), a circular sealing plate (13) is mounted on the cover plate (12), the circular sealing plate (13) is connected to the printer table by screws, and a felt is arranged below the circular sealing plate (13).

5. The high-adaptability cylinder sleeve of a 3D printer according to claim 2, characterized in that: The printing slot (9) is provided with an adjustment plate (14) and a printing substrate assembly from bottom to top, the top surface of the adjustment plate (14) is provided with three leveling slope support blocks (15), the three leveling slope support blocks (15) are arranged in an isosceles triangle, the leveling slope support blocks (15) are connected to the adjustment plate (14) through support block screws, and the printing substrate assembly comprises a leveling substrate (16), the leveling substrate (16) is provided with three leveling grooves (17), and the three leveling grooves (17) are respectively located at three Directly above the leveling slope support block (15), the side wall of the leveling base plate (16) is provided with three groups of threaded holes (18), the three groups of threaded holes (18) are respectively connected to the three leveling grooves (17), the internal threads of the threaded holes (18) are adapted to be equipped with leveling screws (19), the end of the leveling screw (19) close to the leveling slope support block (15) is conical, the top surface of the leveling slope support block (15) is provided with a leveling inclined surface (20), and the conical surface of the leveling screw (19) contacts the leveling inclined surface (20).

6. The high-adaptability cylinder sleeve of a 3D printer according to claim 5, characterized in that: A plurality of round-headed columns (21) are fixed on the top of the adjustment plate (14); a locking circular hole (22) is formed through the leveling base plate (16) at a position corresponding to the round-headed columns (21); and a locking screw (23) is threadedly connected to one side of the locking circular hole (22) of the leveling base plate (16).

7. A highly adaptable cylinder sleeve for a 3D printer according to claim 6, characterized in that: The leveling substrate (16) is provided with an L-shaped groove (27) at the position of the locking circular hole (22); the L-shaped groove (27) passes through the middle of the locking circular hole (22), and one end of the L-shaped groove (27) passes through one side of the leveling substrate (16); the locking screw (23) is located on one side of the locking circular hole (22); when the locking screw (23) is tightened on the leveling substrate (16), the leveling substrate (16) is deformed and clamps the round head column (21).

8. The high-adaptability cylinder sleeve of a 3D printer according to claim 7, characterized in that: The printing substrate assembly also includes a printing substrate (24), a screw hole (25) is provided at the bottom of the printing substrate (24), a connecting screw (26) is passed through the bottom of the leveling substrate (16), and the connecting screw (26) is threadedly adapted in the screw hole (25).

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