CN215320654U

CN215320654U - Multi-module combined quick-release structure and 3D printer

Info

Publication number: CN215320654U
Application number: CN202120542130.3U
Authority: CN
Inventors: 刘辉林; 唐京科; 陈春; 敖丹军; 吴大江
Original assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Current assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-12-28
Anticipated expiration: 2031-03-16

Abstract

The utility model relates to the technical field of 3D printers and discloses a multi-module combined quick-release structure and a 3D printer. The multi-module combined quick-release structure comprises a quick-release plate assembly and a quick-release base plate assembly, wherein the quick-release plate assembly comprises a quick-release mounting plate and a first magnet, and the first magnet is mounted on the quick-release mounting plate; the quick-release substrate assembly comprises a quick-release substrate, a handle and a second magnet, the second magnet is arranged in the handle, and one end of the handle, which is provided with the second magnet, is rotatably arranged on the quick-release substrate; the first magnet and the second magnet are both annular, the first magnet and the second magnet respectively comprise at least one N pole and at least one S pole, and the N pole and the S pole are sequentially connected end to end; the quick-release mounting plate is mounted on the quick-release substrate, and the first magnet is attached to the second magnet; the turning state of the handle includes a first state and a second state. The quick-release base plate assembly realizes quick assembly and disassembly of the quick-release plate assembly and the quick-release base plate assembly, and realizes uniform change of magnetic force between the first magnet and the second magnet.

Description

Multi-module combined quick-release structure and 3D printer

Technical Field

The utility model relates to the technical field of 3D printers, in particular to a multi-module combined quick-release structure and a 3D printer.

Background

The field of 3D printing technology application is wider and wider under the promotion of computer digital technology intellectualization, especially the FDM hot melting technology is more and more favored by DIY fans, and accordingly, the DIY fans also put forward the demand on the multifunctional operation of the 3D printer, and the 3D printer is not only expected to be capable of FDM printing but also expected to be capable of doing more interesting things such as laser cutting and writing by the 3D printer, so that the demand of quick switching is put forward on the spray head of the 3D printer. In the prior art, a substrate module matches multiple functional modules, but the shells of the multiple functional modules are all installed on the shell of the substrate module by screws, the operation flow is complex, the functional modules are frequently replaced, the screws are repeatedly disassembled and assembled, the screw thread failure of the screws is easily caused, and the use experience of customers is reduced. Among the prior art, still adopt one of them to set up the electro-magnet on the casing of multiple function module or the casing of base plate module, another sets up the mode of magnet, through the electro-magnet circular telegram, realized the casing of multiple function module and the casing dismouting of base plate module, but the electro-magnet is not only complicated in structure, and is with high costs, and when two casings of needs separation, the instantaneous circular telegram of electro-magnet makes the magnetic force between electro-magnet and the magnet increase in the twinkling of an eye, causes the casing bullet to fly easily, and operating personnel has the safety risk.

Accordingly, a multi-module quick release structure and a 3D printer are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

Based on the above, the utility model aims to provide a multi-module combined quick release structure and a 3D printer, which realize quick disassembly and assembly of a quick release plate assembly and a quick release substrate assembly, are simple to operate, greatly simplify the operation process of a user, greatly improve the playability of the 3D printer, improve the user experience, and improve the operation safety by realizing uniform change of the magnetic force between a first magnet and a second magnet when a handle rotates.

In order to achieve the purpose, the utility model adopts the following technical scheme:

in one aspect, a multi-module quick release structure is provided, which includes:

the quick-release plate assembly comprises a quick-release mounting plate and a first magnet, and the first magnet is mounted on the quick-release mounting plate;

the quick-release substrate assembly comprises a quick-release substrate, a handle and a second magnet, wherein the second magnet is arranged in the handle, and one end of the handle, provided with the second magnet, is rotatably arranged on the quick-release substrate;

the first magnet and the second magnet are both annular, each of the first magnet and the second magnet comprises at least one N pole and at least one S pole, and the N pole and the S pole are sequentially connected end to end;

the quick-release mounting plate is mounted on the quick-release substrate, and the first magnet is attached to the second magnet;

the rotating state of the handle comprises a first state and a second state, when the handle carries the second magnet to rotate to the first state, the N pole and the S pole of the first magnet are respectively opposite to the S pole and the N pole of the second magnet, and when the handle carries the second magnet to rotate to the second state, the N pole and the S pole of the first magnet are respectively opposite to the N pole and the S pole of the second magnet; the quick disassembly and assembly of the quick-disassembly plate assembly and the quick-disassembly base plate assembly are realized, the operation is simple, and the operation flow of a user is greatly simplified.

As a preferred technical scheme of a multi-module combined quick-release structure, the quick-release mounting plate is provided with a first mounting groove with a downward opening, and the first magnet is mounted in the first mounting groove through a first screw;

the handle is provided with the second mounting groove that the opening is up, the second magnet pass through the second screw install in the second mounting groove. The fixation of the first magnet and the second magnet is realized.

As a preferred technical scheme of a multi-module combined quick-release structure, the outer side wall of the first magnet is provided with a first limiting part, the shape of the inner wall of the first mounting groove is matched with the shape of the outer side wall of the first magnet, and the first limiting part is used for limiting the relative rotation of the first magnet relative to the first mounting groove;

the lateral wall of second magnet is provided with the spacing portion of second, the inner wall shape of second mounting groove with the lateral wall shape phase-match of second magnet, the spacing portion of second is used for restricting the second magnet is relative the second mounting groove rotates relatively.

As an optimal technical scheme of a multimode combination rapid disassembly structure, the rapid disassembly base plate subassembly still includes the step pivot, the step pivot install in inside the rapid disassembly base plate, the second screw wear to establish in proper order the second magnet the bottom of second mounting groove with the lateral wall and the threaded connection of rapid disassembly base plate in the step pivot, the lateral wall card of rapid disassembly base plate hold in the step pivot with between the handle. The handle can be rotatably arranged on the quick-release base plate.

As a preferred technical solution of a multi-module combined quick release structure, the first magnet of the quick release mounting plate is crimped on the second magnet of the handle, and the handle is further provided with a limiting wall located at the outer side of the quick release mounting plate;

when the handle rotates, the limiting wall rotates around the quick-release mounting plate, and the quick-release mounting plate can limit the rotating angle of the limiting wall.

As an optimal technical scheme of the multi-module combined quick-release structure, the quick-release structure further comprises a positioning pin, wherein the quick-release mounting plate is provided with a positioning hole, a positioning groove is formed in the quick-release substrate, and the positioning pin can penetrate through the positioning hole and is installed in the positioning groove, so that the quick-release mounting plate and the quick-release substrate are positioned.

As a preferred technical scheme of a multi-module combined quick-release structure, the quick-release plate assembly further comprises a PCB, and the PCB is detachably mounted on the quick-release mounting plate;

the quick-release substrate assembly also comprises a PCB substrate, and the PCB substrate is detachably mounted on the quick-release substrate;

the PCB board is electrically connected with the PCB substrate. The replacement of the PCB board and the PCB substrate is convenient.

As an optimal technical scheme of the multi-module combined quick-release structure, one of the PCB and the PCB substrate is provided with a spring plate connector, and the other one of the PCB and the PCB substrate is provided with a contact piece, wherein the spring plate connector is in contact with the contact piece so as to realize the electrical connection between the PCB and the PCB substrate.

In another aspect, a 3D printer is provided, which includes the multi-module combined quick release structure according to any one of the above aspects.

The utility model has the beneficial effects that:

the utility model provides a multi-module combined quick-release structure and a 3D printer, wherein the 3D printer comprises the multi-module combined quick-release structure. When the quick detach board assembly and the quick detach base plate assembly are assembled, only the handle needs to be rotated to a first state, then the first magnet of the quick detach mounting plate is attached to the second magnet of the quick detach base plate, so that the N pole and the S pole of the first magnet are opposite to the S pole and the N pole of the second magnet respectively, and the first magnet and the second magnet attract each other in opposite polarities to realize that the quick detach mounting plate is fixed on the quick detach base plate. The first magnet and the second magnet are both annular, the first magnet and the second magnet respectively comprise at least one N pole and at least one S pole, and the N pole and the S pole are sequentially connected end to end; when having realized first magnet and the rotatory arbitrary angle of second magnet, be just to the state, realize the magnetic force homogeneous change between first magnet and the second magnet, prevent the magnetic force sudden change, cause the quick detach mounting panel instantaneous bounce, improve the dismouting security. When the quick detach board subassembly and the quick detach base plate subassembly need be separated, rotate the handle, when making the handle carry the second magnet and rotate to the second state, make the N utmost point and the S utmost point of first magnet just right with the N utmost point and the S utmost point of second magnet respectively, first magnet and second magnet like poles repel each other to realize the quick separation of quick detach mounting panel and quick detach base plate. The quick-release board assembly and quick-release base plate assembly quick-release device is simple to operate, the operation flow of a user is greatly simplified, meanwhile, the playability of the 3D printer is greatly improved, and the use experience of the user is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a multi-module quick release structure according to an embodiment of the present invention;

FIG. 2 is an exploded view of a multi-module quick release structure according to an embodiment of the present invention;

FIG. 3 is a diagram illustrating a first magnet and a second magnet with a handle rotated to a first position according to an embodiment of the present invention;

FIG. 4 is a diagram illustrating the first magnet and the second magnet when the handle is rotated to a second position according to an embodiment of the present invention;

FIG. 5 is a schematic diagram illustrating a structure of a quick release plate assembly according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a quick-release substrate assembly according to an embodiment of the utility model.

The figures are labeled as follows:

1. a quick release plate assembly; 11. a quick-release mounting plate; 111. positioning holes; 12. a first magnet; 121. a first limiting part; 13. a PCB board; 131. a contact; 14. a first screw;

2. a quick-release substrate assembly; 21. quickly disassembling the substrate; 211. a stepped hole; 212. positioning a groove; 22. a handle; 221. A second mounting groove; 222. a limiting wall; 23. a second magnet; 231. a second limiting part; 24. a step rotating shaft; 25. a PCB substrate; 251. an elastic connector; 26. a second screw;

3. and a positioning pin.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Example one

As shown in fig. 1-6, the present embodiment provides a multi-module quick release structure, which includes a quick release plate assembly 1 and a quick release base plate assembly 2. The quick-release plate assembly 1 comprises a quick-release mounting plate 11 and a first magnet 12, and the quick-release substrate assembly 2 comprises a quick-release substrate 21, a handle 22 and a second magnet 23.

Specifically, the first magnet 12 is mounted on the quick-release mounting plate 11; the second magnet 23 is arranged in the handle 22, and one end of the handle 22, which is provided with the second magnet 23, is rotatably arranged on the quick-release base plate 21; the first magnet 12 and the second magnet 23 are both annular, the first magnet 12 and the second magnet 23 both comprise at least one N pole and at least one S pole, and the N pole and the S pole are sequentially connected end to end; when having realized first magnet 12 and the arbitrary angle of second magnet 23 rotation, be just to the state, realize the magnetic force homogeneous change between first magnet 12 and the second magnet 23, prevent the magnetic force sudden change, cause quick detach mounting panel 11 instantaneous bounce, improve the dismouting security. The quick release mounting plate 11 is mounted on the quick release base plate 21, and the first magnet 12 is bonded to the second magnet 23. The rotation state of the handle 22 includes a first state and a second state, as shown in fig. 3, when the handle 22 carries the second magnet 23 and rotates to the first state, the N pole and the S pole of the first magnet 12 are respectively aligned with the S pole and the N pole of the second magnet 23, as shown in fig. 4, when the handle 22 carries the second magnet 23 and rotates to the second state, the N pole and the S pole of the first magnet 12 are respectively aligned with the N pole and the S pole of the second magnet 23. As shown in fig. 3 and 4, in the present embodiment, each of the first magnet 12 and the second magnet 23 includes two N poles and two S poles, each of which has a quarter arc size. In other embodiments, the first magnet 12 and the second magnet 23 each include an N pole and an S pole, each N pole and each S pole being one-half arc in size.

When the quick-release plate assembly 1 and the quick-release base plate 21 are assembled, only the handle 22 needs to be rotated to the first state, and then the first magnet 12 of the quick-release mounting plate 11 is attached to the second magnet 23 of the quick-release base plate 21, so that the N pole and the S pole of the first magnet 12 are respectively opposite to the S pole and the N pole of the second magnet 23, and the first magnet 12 and the second magnet 23 attract each other in opposite polarities, so that the quick-release mounting plate 11 is fixed on the quick-release base plate 21. When the quick-release plate assembly 1 and the quick-release base plate assembly 2 need to be separated, the handle 22 is rotated to enable the handle 22 to carry the second magnet 23 to rotate to the second state, the N pole and the S pole of the first magnet 12 are respectively opposite to the N pole and the S pole of the second magnet 23, the same poles of the first magnet 12 and the second magnet 23 repel each other, and therefore the quick separation of the quick-release mounting plate 11 and the quick-release base plate 21 is achieved. This embodiment has realized quick detach board subassembly 1 and quick detach base plate subassembly 2's quick assembly disassembly, and easy operation, very big simplification user's operation flow, simultaneously, very big improvement 3D printer's object for appreciation nature improves user and uses experience.

Preferably, as shown in fig. 2, 5 and 6, the quick-release mounting plate 11 is provided with a first mounting groove with a downward opening, and the first magnet 12 is mounted in the first mounting groove through a first screw 14; the handle 22 is provided with a second mounting groove 221 opened upward, and the second magnet 23 is mounted in the second mounting groove 221 by a second screw 26. Specifically, the first mounting groove and the second mounting groove 221 are both provided with threaded holes, the first magnet 12 and the second magnet 23 are both provided with through holes, the first screw 14 penetrates through the through hole of the first magnet 12 and is in threaded connection with the threaded hole of the first mounting groove, and the second screw 26 penetrates through the through hole of the second magnet 23 and is in threaded connection with the threaded hole of the second mounting groove 221, so that the first magnet 12 and the second magnet 23 are fixed. In other embodiments, the first magnet 12 can be fixed in the first mounting groove by clamping or bonding, and the second magnet 23 can be fixed in the second mounting groove 221 by clamping or bonding, so as to fix the first magnet 12 and the second magnet 23.

Further preferably, as shown in fig. 2, a first limiting portion 121 is disposed on an outer side wall of the first magnet 12, a shape of an inner wall of the first mounting groove matches a shape of an outer side wall of the first magnet 12, and the first limiting portion 121 is configured to limit the first magnet 12 to rotate relative to the first mounting groove; the outer side wall of the second magnet 23 is provided with a second limiting part 231, the shape of the inner wall of the second mounting groove 221 is matched with the shape of the outer side wall of the second magnet 23, and the second limiting part 231 is used for limiting the relative rotation of the second magnet 23 relative to the second mounting groove 221. In this embodiment, the first position-limiting portion 121 and the second position-limiting portion 231 are flat surfaces. In other embodiments, the first position-limiting portion 121 and the second position-limiting portion 231 may also be in any other shape capable of limiting the relative rotation between the magnet and the mounting groove, such as a tooth shape.

Preferably, as shown in fig. 3 and 4, the first magnet 12 and the second magnet 23 are both ring-shaped, and each of the first magnet 12 and the second magnet 23 includes at least one N pole and at least one S pole, which are sequentially connected end to end. In this embodiment, each of the first magnet 12 and the second magnet 23 includes two N poles and two S poles, and each of the N poles and each of the S poles is a quarter arc size. In other embodiments, the first magnet 12 and the second magnet 23 each include an N pole and an S pole, each N pole and each S pole being one-half arc in size.

Optionally, as shown in fig. 2, the quick-release substrate assembly 2 further includes a step rotating shaft 24, the step rotating shaft 24 is installed inside the quick-release substrate 21, a second screw 26 sequentially penetrates through the second magnet 23, the bottom of the second installation groove 221 and the side wall of the quick-release substrate 21 and is threadedly connected to the step rotating shaft 24, and the side wall of the quick-release substrate 21 is clamped between the step rotating shaft 24 and the handle 22. Specifically, in order to improve the installation stability of the step spindle 24, the side wall of the quick release base plate 21 is provided with a stepped hole 211 matched with the shape of the step spindle 24, and the step spindle 24 is installed in the stepped hole 211. Step pivot 24 sets up in big footpath section and path section, the big footpath section of shoulder hole 211 is located the lateral wall and keeps away from handle 22 one side, during the equipment, install step pivot 24 in shoulder hole 211 earlier, the step face laminating in shoulder hole 211 of step pivot 24, then wear to establish second magnet 23 with second screw 26 in proper order, the bottom of second mounting groove 221 and quick detach base plate 21's lateral wall and threaded connection in the path section of step pivot 24, realize the fixed of second magnet 23. After the second screw 26 is installed, a gap is formed between the step surface of the step rotating shaft 24 and the step surface of the step hole 211, so that the handle 22 can rotate relative to the quick-release substrate 21 conveniently.

Preferably, the first magnet 12 of the quick release mounting plate 11 is pressed against the second magnet 23 of the handle 22, the handle 22 is further provided with a limiting wall 222, and the limiting wall 222 is located on the outer side of the quick release mounting plate 11; when the handle 22 rotates, the limiting wall 222 rotates around the quick-release mounting plate 11, the quick-release mounting plate 11 can limit the rotation angle of the limiting wall 222, and two ends of the rotation angle of the limiting wall 222 are in the first state and the second state respectively, so that the handle 22 can rotate to the first state or the second state conveniently. In this embodiment, the first state and the second state form an angle of 90 °. Further preferably, a notch is formed in one side, close to the quick-release mounting plate 11, of the stepped hole 211, and the stepped rotating shaft 24 can be mounted on the second screw 26 firstly and then mounted in the stepped hole 211 from the notch, so that the assembly convenience is improved. After the quick release mounting plate 11 is fixed to the quick release base plate 21, the side wall of the quick release mounting plate 11 restricts the movement of the limiting wall 222 of the handle 22 in the direction of separating from the stepped hole 211.

Preferably, the quick-release base plate 21 further comprises a positioning pin 3, the quick-release mounting plate 11 is provided with a positioning hole 111, a positioning groove 212 is arranged on the quick-release base plate 21, and the positioning pin 3 can penetrate through the positioning hole 111 and is installed in the positioning groove 212, so that the quick-release mounting plate 11 and the quick-release base plate 21 can be positioned. It should be noted that, the installation direction of the positioning pin 3 is the same as the repulsive direction of the first magnet 12 and the second magnet 23, and when the first magnet 12 and the second magnet 23 repel each other, the quick release mounting plate 11 can be directly separated from the positioning pin 3, thereby improving the user experience. Further preferably, the number of the positioning pins 3 is two, and the positioning pins are mounted on both sides of the handle 22.

Further, as shown in fig. 5 and fig. 6, the quick release plate assembly 1 further includes a PCB 13, and the PCB 13 is detachably mounted on the quick release mounting plate 11; the quick-release substrate assembly 2 further comprises a PCB substrate 25, and the PCB substrate 25 is detachably mounted on the quick-release substrate 21; the replacement of the PCB 13 and the PCB substrate 25 is facilitated, and the PCB 13 is electrically connected with the PCB substrate 25. The functional module is arranged on the PCB 13, and the quick-release mounting plate 11 can be matched with various types of PCBs 13 for mounting. In this embodiment, the PCB 13 is fixed to the quick-release mounting plate 11 by screws, and the PCB substrate 25 is fixed to the quick-release substrate 21 by screws. In other embodiments, the PCB 13 can also be clamped to the quick-release mounting plate 11, and the PCB substrate 25 is clamped to the quick-release substrate 21.

In the prior art, the PCB and the PCB substrate are usually electrically connected by wiring, but the wiring connection operation is complicated. Preferably, one of the PCB 13 and the PCB substrate 25 is provided with a spring connector, and the other is provided with a contact piece, when the quick-release mounting plate 11 is mounted on the quick-release substrate 21, the spring connector contacts the contact piece to electrically connect the PCB 13 and the PCB substrate 25. In this embodiment, the contact is disposed on the PCB 13, and the spring connector is disposed on the PCB substrate 25.

Example two

The embodiment provides a 3D printer, including the multimode combination rapid disassembly structure in embodiment one, because including the multimode combination rapid disassembly structure in the foregoing, therefore possess the advantage of any one of embodiment one, realized the quick detach board subassembly 1 and quick detach base plate subassembly 2's quick assembly disassembly, and easy operation, very big simplification user's operation flow, simultaneously, very big improvement 3D printer's playability improves user and uses experience.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A multimode makes up rapid disassembly structure which characterized in that includes:

the quick-release plate component (1) comprises a quick-release mounting plate (11) and a first magnet (12), wherein the first magnet (12) is mounted on the quick-release mounting plate (11);

the quick-release substrate assembly (2) comprises a quick-release substrate (21), a handle (22) and a second magnet (23), wherein the second magnet (23) is installed in the handle (22), and one end, provided with the second magnet (23), of the handle (22) is rotatably installed on the quick-release substrate (21);

the first magnet (12) and the second magnet (23) are both annular, the first magnet (12) and the second magnet (23) both comprise at least one N pole and at least one S pole, and the N pole and the S pole are sequentially connected end to end;

the quick-release mounting plate (11) is mounted on the quick-release base plate (21), and the first magnet (12) is attached to the second magnet (23);

the rotation state of the handle (22) comprises a first state and a second state, when the handle (22) carries the second magnet (23) to rotate to the first state, the N pole and the S pole of the first magnet (12) are respectively opposite to the S pole and the N pole of the second magnet (23), and when the handle (22) carries the second magnet (23) to rotate to the second state, the N pole and the S pole of the first magnet (12) are respectively opposite to the N pole and the S pole of the second magnet (23).

2. The multi-module combination quick release structure according to claim 1, wherein the quick release mounting plate (11) is provided with a first mounting groove with a downward opening, and the first magnet (12) is mounted in the first mounting groove through a first screw (14);

the handle (22) is provided with a second mounting groove (221) with an upward opening, and the second magnet (23) is mounted in the second mounting groove (221) through a second screw (26).

3. The multi-module combined quick release structure according to claim 2, wherein the outer side wall of the first magnet (12) is provided with a first limiting part (121), the shape of the inner wall of the first mounting groove is matched with the shape of the outer side wall of the first magnet (12), and the first limiting part (121) is used for limiting the relative rotation of the first magnet (12) relative to the first mounting groove;

the outer side wall of the second magnet (23) is provided with a second limiting part (231), the shape of the inner wall of the second mounting groove (221) is matched with the shape of the outer side wall of the second magnet (23), and the second limiting part (231) is used for limiting the second magnet (23) to rotate relative to the second mounting groove (221).

4. The multi-module combination quick release structure of claim 2, wherein the quick release base plate assembly (2) further comprises a step rotating shaft (24), the step rotating shaft (24) is installed inside the quick release base plate (21), the second screw (26) sequentially penetrates through the second magnet (23), the bottom of the second installation groove (221) and the side wall of the quick release base plate (21) and is in threaded connection with the step rotating shaft (24), and the side wall of the quick release base plate (21) is clamped between the step rotating shaft (24) and the handle (22).

5. The multi-module combination quick release structure according to claim 1, wherein the first magnet (12) of the quick release mounting plate (11) is pressed against the second magnet (23) of the handle (22), the handle (22) is further provided with a limiting wall (222), and the limiting wall (222) is located outside the quick release mounting plate (11);

when the handle (22) rotates, the limiting wall (222) rotates around the quick-release mounting plate (11), and the quick-release mounting plate (11) can limit the rotating angle of the limiting wall (222).

6. The multi-module combination quick release structure according to claim 1, further comprising a positioning pin (3), wherein the quick release mounting plate (11) is provided with a positioning hole (111), the quick release base plate (21) is provided with a positioning slot (212), and the positioning pin (3) can be inserted into the positioning hole (111) and mounted in the positioning slot (212) to position the quick release mounting plate (11) and the quick release base plate (21).

7. The multi-module combination quick release structure according to claim 1, wherein the quick release plate assembly (1) further comprises a PCB (13), and the PCB (13) is detachably mounted on the quick release mounting plate (11);

the quick-release substrate assembly (2) further comprises a PCB substrate (25), and the PCB substrate (25) is detachably mounted on the quick-release substrate (21);

the PCB (13) is electrically connected with the PCB substrate (25).

8. The multi-module quick release structure of claim 7, wherein one of the PCB (13) and the PCB substrate (25) is provided with a spring connector, and the other one of the PCB and the PCB substrate is provided with a contact piece, and the spring connector contacts the contact piece to electrically connect the PCB (13) and the PCB substrate (25).

9. A 3D printer comprising a multi-module quick release structure according to any one of claims 1 to 8.