Four-connected industrial high-speed FDM 3D printer

Abstract

The utility model discloses a four-connected industrial high-speed FDM 3D printer which comprises a mounting frame rack, four printing chambers are equally arranged in the mounting frame rack and are divided into two layers, each layer is provided with two printing chambers, a printing nozzle assembly is arranged in each printing chamber, and the printing nozzle assembly is connected with the mounting frame rack. An X-Y axis driving mechanism for driving the printing nozzle assembly to move along the X axis and the Y axis is arranged in each printing cavity of the mounting frame rack; a platform assembly located below the printing nozzle assembly is arranged in each printing cavity of the mounting frame rack, and a Z-axis driving mechanism used for driving the platform assembly to move along the Z axis is arranged in each printing cavity. The four printing nozzle assemblies are distributed on the upper layer and the lower layer to form one device and are convenient to place, the vertical structure can only occupy the space of two machines, and compared with traditional arrangement of four devices, the space utilization rate is improved, wires are not prone to disorder, potential safety hazards are avoided, and centralized management is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of FDM 3D printers, in particular to a 4-connected industrial high-speed FDM 3D printer. Background Technique

[0002] A 3D printer is a rapid prototyping process device that prints products by stacking layer by layer in a fused deposition manner. The consumables enter the high-temperature nozzle and are discharged downward, walk along the path on the platform and are gradually raised layer by layer, and solid objects are generated according to the definition of the slicing program. Since consumer FDM 3D printers are constantly entering life and becoming production tools, practicality, utilization rate, and printing efficiency have become the focus of attention of individual users and enterprise users.

[0003] Currently, the commonly used FDM 3D printers, as production tools; when the user has more than 2 devices (taking 4 devices as an example), they are all placed side by side (2x2 rows) or in a column (2x2 columns) on the ground or on the table, which occupies a large space, the split power supply is prone to chaos, the separate card printing operation is inconvenient, not easy to manage, and there is no centralized electrical management, which is unsafe; the space utilization rate is very low. To place 4 machines side by side, the space above the machines is actually wasted. Otherwise, a special shelf is needed. After installing the shelf, the operation will be inconvenient. The traditional 4 devices require 4 power cords, and the wires are prone to chaos and there are also safety hazards, which is not convenient for centralized management. The traditional 4 devices require 4 SD cards. When printing different files, multiple operations are required for printing, which is very inconvenient and not convenient for batch management; the traditional devices do not have separate electrical management. Once a safety accident occurs, only the main power supply of the production workshop will be triggered, which will affect the equipment of the entire factory and is likely to cause greater losses. Content of the Utility Model

[0004] In order to solve the defects existing in the prior art, the utility model provides a 4-connected industrial high-speed FDM 3D printer.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model relates to a 4 - connected industrial high - speed FDM 3D printer, which comprises an installation frame rack. The interior of the installation frame rack is equally divided into four printing chambers, and the four printing chambers are divided into two layers, with two in each layer. A printing nozzle assembly is arranged inside each printing chamber. An XY - axis driving mechanism for driving the printing nozzle assembly to move along the X - axis and Y - axis is arranged in each printing chamber of the installation frame rack; A platform assembly is arranged below the printing nozzle assembly in each printing chamber of the installation frame rack, and a Z - axis driving mechanism for driving the platform assembly to move along the Z - axis is arranged inside each printing chamber; An electric control mechanism for controlling the printing nozzle assembly, the XY - axis driving mechanism and the Z - axis driving mechanism is installed at the top of the installation frame rack.

[0007] As a preferred technical solution of the utility model, the installation frame rack comprises a plurality of vertically upward vertical rods. The plurality of vertical rods are arranged in two rows, with three vertical rods equidistantly arranged in each row. First cross - bars are arranged at both ends of each row of vertical rods. Second cross - bars are arranged between the middle parts of adjacent two vertical rods. A cross - shaped reinforcing connecting plate is bolt - connected between two second cross - bars on the same straight line and the middle vertical rod of each row. First mounting plates are arranged in two cavities surrounded by the first cross - bars at the top of the vertical rods and two cavities surrounded by the plurality of second cross - bars.

[0008] As a preferred technical solution of the utility model, reinforcing rib plates are arranged at the joints of the vertical rods and the first cross - bars and at the joints of the vertical rods and the second cross - bars. A vertically downward support rod is installed at the bottom end of the outer vertical rod, and a circular support block is arranged at the bottom end of the support rod.

[0009] As a preferred technical solution of the utility model, the XY - axis driving mechanism comprises two first guiding supports and two second guiding supports arranged on the vertical rods at the upper - end corners of each printing chamber. A first guiding groove is formed in the inner wall of the first guiding support, and a first guiding roller is arranged inside the first guiding groove. An installation groove and a second guiding groove are formed in the second guiding support. Two second guiding rollers are arranged inside the installation groove, and two third guiding rollers and a first driving gear are arranged inside the second guiding groove.

[0010] As a preferred technical solution of the utility model, a first guiding rod is arranged between the first guiding support and the second guiding support. A guiding moving seat is arranged on the first guiding rod. Two second guiding rods are arranged between the two guiding moving seats. A guiding hole for the two second guiding rods to pass through is formed in the printing nozzle assembly. Two T - shaped three - way guiding slot holes which are vertically distributed are formed on the opposite surfaces of the two guiding moving seats, and a fourth guiding roller is arranged inside the three - way guiding slot holes.

[0011] As a preferred technical solution of the present utility model, an X-axis motor and a Y-axis motor for driving the rotation of two first driving gears are respectively installed on the two second guiding supports. One first driving gear, four third guiding rollers and two fourth guiding rollers are connected by an X-axis pulley drive, and the other first driving gear, four second guiding rollers and the other two fourth guiding rollers are connected by a Y-axis pulley drive. The X-axis pulley and the Y-axis pulley are both connected to the guiding moving seat.

[0012] As a preferred technical solution of the present utility model, the platform assembly includes a lifting table. Protective edges extending downward are provided on the sides of the lifting table, and support columns extending vertically upward are provided at the corners of the lifting table. The tops of the plurality of support columns are bolted to a support plate, and a printing platform is provided on the top of the support plate.

[0013] As a preferred technical solution of the present utility model, the Z-axis driving mechanism includes a third cross bar provided between the front and rear vertical bars. Positioning connecting plates are provided in the middle of the third cross bar, the first cross bar and the second cross bar. A reciprocating lead screw is connected by bearings in the middle between the positioning connecting plate on the third cross bar and the positioning connecting plates on the first cross bar and the second cross bar, and guiding connecting rods are connected by bearings on both sides of the reciprocating lead screw. Threaded holes threadedly connected to the reciprocating lead screw and through holes for the two guiding connecting rods to pass through are provided at both ends of the lifting table.

[0014] As a preferred technical solution of the present utility model, the Z-axis driving mechanism further includes fifth guiding rollers provided at the bottom ends of the two guiding connecting rods in each printing chamber. T-shaped second mounting plates are bolted to the bottom first cross bar and the second cross bar. A Z-axis motor is installed on the second mounting plate. A second driving gear is provided on the output shaft of the Z-axis motor, and the second driving gear is connected to the two fifth guiding rollers in the same printing chamber by a Z-axis pulley drive.

[0015] As a preferred technical solution of the present utility model, the electric control mechanism includes an electric control box body provided on the top first mounting plate. A centralized control core board, a power supply, a relay and four driving boards are installed inside the electric control box body. The power supply is used to supply power to the X-axis motor, the Y-axis motor, the Z-axis motor, the four printing nozzle assemblies, the centralized control core board, the relay and the four driving boards. The four driving boards are respectively electrically connected to the four printing nozzle assemblies through the four relays.

[0016] The beneficial effects of the present utility model are:

[0017] 1. This 4-in-1 industrial high-speed FDM 3D printer can perform 3D printing on the platform component through the provided printing nozzle assembly. The XY-axis drive mechanism can drive the printing nozzle assembly to move in the X-axis or Y-axis direction, enabling the printing nozzle assembly to complete printing during movement. The Z-axis drive mechanism can drive the platform component to move up and down, making it adaptable to 3D printing at different heights. By arranging the four printing nozzle assemblies in an upper and lower two-layer configuration as one device, it is convenient for placement. The upper and lower structure only occupies the space of 2 machines. Compared with the placement of 4 traditional devices, the space utilization rate is improved. Through the setting of the electronic control mechanism, the 4-in-1 industrial high-speed FDM 3D printer is uniformly powered. There is only one power cord externally, which is then distributed to the four printing nozzle assemblies internally. Compared with the 4 power cords required for 4 traditional devices, the wires are not easily chaotic, avoiding potential safety hazards and facilitating centralized management. For unified management of the main control drive, only one SD card is needed, which can be distributed to the four printing nozzle assemblies, making it convenient for the manager to print the same file or different files at any time. Compared with the 4 SD cards required for 4 traditional devices, it avoids the inconvenience of multiple operations for printing different files and the situation of inconvenient batch management.

[0018] 2. This 4-in-1 industrial high-speed FDM 3D printer consists of multiple first crossbars and multiple second crossbars to form an installation frame rack. It is an integrated profile rack that combines 4 printers into one, capable of independent printing and unified control. The reinforcing ribs can improve the connection stability between the first crossbar, the second crossbar, and the vertical bar, and the support blocks can support the installation frame rack.

[0019] 3. For this 4-in-1 industrial high-speed FDM 3D printer, the output shaft of the X-axis motor drives the first driving gear that matches it to rotate. Under the action of four third guide rollers, two fourth guide rollers, and the X-axis pulley, the printing nozzle assembly moves along the X-axis direction. The output shaft of the Y-axis motor drives another first driving gear to rotate, and under the action of four second guide rollers, two other fourth guide rollers, and the Y-axis pulley, it moves along the Y-axis direction, facilitating the movement of the printing nozzle assembly in the X-axis or Y-axis direction, thereby facilitating the printing of the 4-in-1 industrial high-speed FDM 3D printer.

[0020] 4. This 4-in-1 industrial high-speed FDM 3D printer has a platform component for the printing nozzle assembly to perform printing on the printing platform. The output shaft of the Z-axis motor drives the second driving gear to rotate. Under the action of two fifth guide rollers and the Z-axis pulley, two reciprocating lead screws rotate. The reciprocating lead screws are threadedly connected to the lifting table, and under the guiding action of two guiding link rods, the lifting table moves along the direction of the reciprocating lead screws. Description of the Drawings

[0021] The accompanying drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the accompanying drawings:

[0022] Figure 1 is a schematic structural diagram of a 4-connected industrial high-speed FDM 3D printer of the present utility model;

[0023] Figure 2 is a front view structural schematic diagram of a 4-connected industrial high-speed FDM 3D printer of the present utility model;

[0024] Figure 3 is a schematic structural diagram of the XY-axis drive mechanism of a 4-connected industrial high-speed FDM 3D printer of the present utility model;

[0025] Figure 4 is a schematic structural diagram of the connection structure between the platform assembly and the Z-axis drive mechanism of a 4-connected industrial high-speed FDM 3D printer of the present utility model;

[0026] Figure 5 is a schematic structural diagram of the electric control mechanism of a 4-connected industrial high-speed FDM 3D printer of the present utility model.

[0027] In the figure: 1. Installation frame rack; 101. Vertical rod; 102. First cross bar; 103. Second cross bar; 104. Reinforcing connecting plate; 105. First mounting plate; 106. Reinforcing rib plate; 2. Printing chamber; 3. Printing nozzle assembly; 4. XY-axis drive mechanism; 401. First guiding support; 402. Second guiding support; 403. First guiding groove; 404. First guiding roller; 405. Installation groove; 406. Second guiding groove; 407. Second guiding roller; 408. Third guiding roller; 409. First driving gear; 4010. First guiding rod; 4011. Guiding moving seat; 4012. Second guiding rod; 4013. Three-way guiding slot hole; 4014. Fourth guiding roller; 4015. X-axis motor; 4016. Y-axis motor; 4017. X-axis pulley; 4018. Y-axis pulley; 5. Platform assembly; 501. Lifting table; 502. Protective edge; 503. Support column; 504. Support plate; 505. Printing platform; 6. Z-axis drive mechanism; 601. Third cross bar; 602. Positioning connecting plate; 603. Reciprocating lead screw; 604. Guiding connecting rod; 605. Fifth guiding roller; 606. Second mounting plate; 607. Z-axis motor; 608. Second driving gear; 609. Z-axis pulley; 7. Electric control mechanism; 701. Electric control box body; 702. Centralized control core board; 703. Power supply; 704. Relay; 705. Driving board; 8. Support rod; 9. Support block. Detailed implementation manners

[0028] The preferred embodiments of the present utility model will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present utility model, and are not intended to limit the present utility model.

[0029] Embodiment: As Figure 1 and Figure 2 shown, a 4-connected industrial high-speed FDM 3D printer of the present utility model includes an installation frame rack 1. Four printing chambers 2 are equally divided inside the installation frame rack 1. The four printing chambers 2 are divided into two layers, with two in each layer. A printing nozzle assembly 3 is provided inside each printing chamber 2. An XY-axis driving mechanism 4 for driving the printing nozzle assembly 3 to move along the X-axis and Y-axis is provided in each printing chamber 2 of the installation frame rack 1; A platform assembly 5 is provided below the printing nozzle assembly 3 in each printing chamber 2 of the installation frame rack 1, and a Z-axis driving mechanism 6 for driving the platform assembly 5 to move along the Z-axis is provided inside each printing chamber 2; An electric control mechanism 7 for controlling the printing nozzle assembly 3, the XY-axis driving mechanism 4, and the Z-axis driving mechanism 6 is installed at the top of the installation frame rack 1. By providing the printing nozzle assembly 3, 3D printing can be performed on the platform assembly 5. The XY-axis driving mechanism 4 can drive the printing nozzle assembly 3 to move along the X-axis or Y-axis, so that the printing nozzle assembly 3 completes printing during the movement. The Z-axis driving mechanism 6 can drive the platform assembly 5 to move up and down, so that it can adapt to 3D printing of different heights. The four printing nozzle assemblies 3 are arranged in two upper and lower layers as one device, which is convenient for placement. The upper and lower structures only occupy the space of 2 machines. Compared with the placement of 4 traditional devices, the space utilization rate is improved; Through the setting of the electric control mechanism 7, the 4-connected industrial high-speed FDM 3D printer is uniformly powered. There is only one power cord outside, and it is then distributed to the four printing nozzle assemblies 3 inside. Compared with 4 traditional devices that require 4 power cords, the wires are not easily confused, avoiding potential safety hazards, and facilitating centralized management. The main control drive is uniformly managed. Only one SD card is needed, which can be distributed to the four printing nozzle assemblies 3, facilitating the manager to print the same file or different files at any time. Compared with 4 traditional devices that require 4 SD cards, it avoids the inconvenience of having to operate the printing multiple times when printing different files and the situation of inconvenient batch management.

[0030] Specifically, as Figure 1As shown, the installation frame rack 1 includes a plurality of vertically upward vertical rods 101. The plurality of vertical rods 101 are arranged in two rows, front and back. There are three vertical rods 101 in each row at equal intervals. First cross bars 102 are provided at both ends of each row of vertical rods 101. Second cross bars 103 are provided between the middle parts of adjacent two vertical rods 101. A cross-shaped reinforcing connecting plate 104 is bolted between two second cross bars 103 on the same straight line and the middle vertical rod 101 in each row. First mounting plates 105 are provided in the two cavities surrounded by the first cross bars 102 at the top of the vertical rods 101 and in the two cavities surrounded by the plurality of second cross bars 103. Reinforcing rib plates 106 are provided at the joints of the vertical rods 101 and the first cross bars 102 and at the joints of the vertical rods 101 and the second cross bars 102. Vertical support rods 8 are installed at the bottom ends of the outer vertical rods 101. Circular support blocks 9 are provided at the bottom ends of the support rods 8. The installation frame rack 1 is formed by a plurality of first cross bars 102 and a plurality of second cross bars 103, which is an integrated profile rack integrating 4 printers, capable of independent printing and unified control. The reinforcing rib plates 106 can improve the connection stability between the first cross bars 102, the second cross bars 103 and the vertical rods 101, and the support blocks 9 can support the installation frame rack 1.

[0031] Specifically, as Figure 3As shown, the XY-axis driving mechanism 4 includes two first guiding supports 401 and two second guiding supports 402 provided on the vertical rods 101 at the upper end corners of each printing chamber 2. The inner wall of the first guiding support 401 is provided with a first guiding groove 403, and a first guiding roller 404 is arranged inside the first guiding groove 403. The second guiding support 402 is provided with a mounting groove 405 and a second guiding groove 406. Two second guiding rollers 407 are arranged inside the mounting groove 405, and two third guiding rollers 408 and a first driving gear 409 are arranged inside the second guiding groove 406. A first guiding rod 4010 is arranged between the first guiding support 401 and the second guiding support 402, and a guiding moving seat 4011 is arranged on the first guiding rod 4010. Two second guiding rods 4012 are arranged between the two guiding moving seats 4011. The printing head assembly 3 is provided with guiding holes for the two second guiding rods 4012 to pass through. Two three-way guiding slot holes 4013 which are vertically distributed and T-shaped are formed on the opposite surfaces of the two guiding moving seats 4011, and a fourth guiding roller 4014 is arranged inside the three-way guiding slot holes 4013. An X-axis motor 4015 and a Y-axis motor 4016 for driving the two first driving gears 409 to rotate are respectively installed on the two second guiding supports 402. A first driving gear 409, four third guiding rollers 408 and two fourth guiding rollers 4014 are connected by an X-axis pulley 4017 in transmission. Another first driving gear 409, four second guiding rollers 407 and the other two fourth guiding rollers 4014 are connected by a Y-axis pulley 4018 in transmission. Both the X-axis pulley 4017 and the Y-axis pulley 4018 are connected to the guiding moving seat 4011. The output shaft of the X-axis motor 4015 drives the first driving gear 409 matching with it to rotate, and under the action of the four third guiding rollers 408, the two fourth guiding rollers 4014 and the X-axis pulley 4017, the printing head assembly 3 moves along the X-axis direction. The output shaft of the Y-axis motor 4016 drives the other first driving gear 409 to rotate, and under the action of the four second guiding rollers 407, the other two fourth guiding rollers 4014 and the Y-axis pulley 4018, it moves along the Y-axis direction, facilitating the movement of the printing head assembly 3 in the X-axis or Y-axis direction, so as to facilitate the 4-in-1 industrial high-speed FDM 3D printer to perform printing.

[0032] Specifically, as Figure 4As shown, the platform component 5 includes a lifting table 501. Protective edges 502 extending downward are provided on the sides of the lifting table 501, and support columns 503 extending vertically upward are provided at the corners of the lifting table 501. The tops of the multiple support columns 503 are connected by bolts to a support plate 504, and a printing platform 505 is provided at the top of the support plate 504. The Z-axis drive mechanism 6 includes a third cross bar 601 provided between the front and rear vertical rods 101. Positioning connecting plates 602 are provided in the middle of the third cross bar 601, the first cross bar 102, and the second cross bar 103. A reciprocating lead screw 603 is connected by bearings in the middle between the positioning connecting plates 602 on the third cross bar 601 and the positioning connecting plates 602 on the first cross bar 102 and the second cross bar 103, and guide link rods 604 connected by bearings on both sides of the reciprocating lead screw 603. Threaded holes threadedly connected to the reciprocating lead screw 603 and through holes for the two guide link rods 604 to pass through are provided at both ends of the lifting table 501. The Z-axis drive mechanism 6 further includes fifth guide rollers 605 provided at the bottom ends of the two guide link rods 604 in each printing chamber 2. T-shaped second mounting plates 606 are connected by bolts to the bottom first cross bar 101 and the second cross bar 103. A Z-axis motor 607 is mounted on the second mounting plate 606. A second drive gear 608 is provided on the output shaft of the Z-axis motor 607. The second drive gear 608 is drivingly connected to the two fifth guide rollers 605 in the same printing chamber 2 through a Z-axis pulley 609. By providing the platform component 5, the printing nozzle assembly 3 can be used to perform printing on the printing platform 505. The output shaft of the Z-axis motor 607 drives the second drive gear 608 to rotate, and under the action of the two fifth guide rollers 605 and the Z-axis pulley 609, the two reciprocating lead screws 603 are rotated. The reciprocating lead screw 603 is threadedly connected to the lifting table 501, and under the guiding action of the two guide link rods 604, the lifting table 501 moves along the direction of the reciprocating lead screw 603.

[0033] Specifically, as Figure 5 shown, the electric control mechanism 7 includes an electric control box body 701 provided on the top first mounting plate 105. A centralized control core board 702, a power supply 703, a relay 704, and four drive boards 705 are installed inside the electric control box body 701. The power supply 703 is used to supply power to the X-axis motor 4015, the Y-axis motor 4016, the Z-axis motor 607, the four printing nozzle assemblies 3, the centralized control core board 702, the relay 704, and the four drive boards 705. The four drive boards 705 are electrically connected to the four printing nozzle assemblies 3 through the four relays 704 respectively. When a problem occurs with the machine, the faulty device can be emergently stopped individually.

[0034] During operation, this 4-in-1 industrial high-speed FDM 3D printer can perform 3D printing on the platform component 5 through the provided printing nozzle assembly 3. The XY-axis drive mechanism 4 can drive the printing nozzle assembly 3 to move in the X-axis or Y-axis direction, enabling the printing nozzle assembly 3 to complete printing during movement. The Z-axis drive mechanism 6 can drive the platform component 5 to move up and down, making it adaptable to 3D printing at different heights. By arranging the four printing nozzle assemblies 3 in an upper and lower two-layer configuration as one device, it is convenient for placement. The upper and lower structure only occupies the space of 2 machines. Compared with the placement of 4 traditional devices, the space utilization rate is improved. Through the setting of the electric control mechanism 7, the 4-in-1 industrial high-speed FDM 3D printer is uniformly powered. There is only one power cord externally, and it is distributed to the four printing nozzle assemblies 3 internally. Compared with the 4 power cords required for 4 traditional devices, the wires are not easily confused, avoiding potential safety hazards and facilitating centralized management. For unified management of the main control drive, only one SD card is needed, which can be distributed to the four printing nozzle assemblies 3, facilitating the manager to print the same file or different files at any time. Compared with the 4 SD cards required for 4 traditional devices, it avoids the inconvenience of multiple operations for printing different files and the situation of inconvenient batch management.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A 4-piece industrial high-speed FDM 3D printer, characterized in that: The invention comprises a mounting frame (1), wherein the mounting frame (1) is provided with four printing chambers (2) in equal parts, wherein the four printing chambers (2) are divided into two layers, each layer being provided with two printing chambers, wherein each printing chamber (2) is provided with a printing head assembly (3), and each printing chamber (2) of the mounting frame (1) is provided with an XY-axis driving mechanism (4) for driving the printing head assembly (3) to move along an X-axis and a Y-axis; Each printing chamber (2) of the mounting frame (1) is provided with a platform assembly (5) located below the printing head assembly (3), and each printing chamber (2) is provided with a Z-axis driving mechanism (6) for driving the platform assembly (5) to move along the Z-axis; An electric control mechanism (7) for controlling a print head assembly (3), an XY axis drive mechanism (4) and a Z axis drive mechanism (6) is installed on the top of the installation frame (1).

2. A 4-piece industrial high-speed FDM 3D printer according to claim 1, characterized in that: The mounting frame (1) comprises a plurality of vertical bars (101) extending vertically upwards, the plurality of vertical bars (101) being arranged in two rows, each row of vertical bars (101) being provided with three vertical bars (101) at equal intervals, a first cross bar (102) being provided at both ends of each row of vertical bars (101), a second cross bar (103) being provided between the middle parts of two adjacent vertical bars (101), a cross-shaped reinforcing connecting plate (104) being connected via bolts between two second cross bars (103) on the same straight line and the middle vertical bar (101) in each row, and a first mounting plate (105) being provided in two cavities enclosed by the first cross bar (102) at the top of the vertical bar (101) and in two cavities enclosed by the plurality of second cross bars (103).

3. A 4-piece industrial high-speed FDM 3D printer according to claim 2, characterized in that: A reinforcing rib (106) is provided at the connection between the vertical rod (101) and the first cross rod (102) and at the connection between the vertical rod (101) and the second cross rod (103), and a vertically downward supporting rod (8) is installed at the bottom end of the outer vertical rod (101), and a circular supporting block (9) is provided at the bottom end of the supporting rod (8).

4. A 4-piece industrial high-speed FDM 3D printer according to claim 3, characterized in that: The XY axis driving mechanism (4) comprises two first guide supports (401) and two second guide supports (402) arranged on a vertical rod (101) at the corner of the upper end of each printing chamber (2); the inner wall of the first guide support (401) is provided with a first guide groove (403); the first guide groove (403) is provided with a first guide roller (404); the second guide support (402) is provided with a mounting groove (405) and a second guide groove (406); the mounting groove (405) is provided with two second guide rollers (407); the second guide groove (406) is provided with two third guide rollers (408) and a first driving gear (409).

5. A 4-piece industrial high-speed FDM 3D printer according to claim 4, characterized in that: A first guide rod (4010) is provided between the first guide support (401) and the second guide support (402); a guide movable seat (4011) is provided on the first guide rod (4010); two second guide rods (4012) are provided between the two guide movable seats (4011); a guide hole for the two second guide rods (4012) to pass through is provided on the print head assembly (3); two three-way guide slot holes (4013) distributed up and down and in a T shape are provided on the opposite surfaces of the two guide movable seats (4011); a fourth guide roller (4014) is provided inside the three-way guide slot hole (4013).

6. A 4-piece industrial high-speed FDM 3D printer according to claim 5, characterized in that: An X-axis motor (4015) and a Y-axis motor (4016) for driving the two first driving gears (409) to rotate are respectively installed on the two second guide supports (402); one first driving gear (409), four third guide rollers (408) and two fourth guide rollers (4014) are connected via an X-axis pulley (4017); another first driving gear (409), four second guide rollers (407) and another two fourth guide rollers (4014) are connected via a Y-axis pulley (4018); and both the X-axis pulley (4017) and the Y-axis pulley (4018) are connected to the guide movable seat (4011).

7. A 4-piece industrial high-speed FDM 3D printer according to claim 6, characterized in that: The platform assembly (5) comprises a lifting platform (501), the sides of the lifting platform (501) are all provided with downward protective edges (502), the corners of the lifting platform (501) are all provided with vertically upward support columns (503), the top ends of the plurality of support columns (503) are connected with support plates (504) via bolts, and the top end of the support plates (504) is provided with a printing platform (505).

8. A 4-piece industrial high-speed FDM 3D printer according to claim 7, characterized in that: The Z-axis driving mechanism (6) comprises a third crossbar (601) arranged between the front and rear vertical bars (101); the middle parts of the third crossbar (601), the first crossbar (102) and the second crossbar (103) are all provided with positioning connecting plates (602); the middle parts between the positioning connecting plates (602) on the third crossbar (601) and the positioning connecting plates (602) on the first crossbar (102) and the second crossbar (103) are connected to a reciprocating screw (603) and guide connecting rods (604) connected to both sides of the reciprocating screw (603) via bearings; both end parts of the lifting platform (501) are provided with threaded holes threadedly connected to the reciprocating screw (603) and through holes for two guide connecting rods (604) to pass through.

9. A 4-piece industrial high-speed FDM 3D printer according to claim 8, characterized in that: The Z-axis driving mechanism (6) further comprises a fifth guide roller (605) arranged at the bottom end of two guide connecting rods (604) in each printing chamber (2); a second T-shaped mounting plate (606) is bolted to the first crossbar (102) and the second crossbar (103) at the bottom; a Z-axis motor (607) is mounted on the second mounting plate (606); an output shaft of the Z-axis motor (607) is provided with a second driving gear (608); and the second driving gear (608) is transmission-connected to the two fifth guide rollers (605) in the same printing chamber (2) via a Z-axis pulley (609).

10. A 4-piece industrial high-speed FDM 3D printer according to claim 9, characterized in that: The electric control mechanism (7) comprises an electric control box (701) arranged on a first mounting plate (105) at the top, wherein a centralized control core board (702), a power supply (703), a relay (704) and four drive boards (705) are installed inside the electric control box (701), wherein the power supply (703) is used to supply power to an X-axis motor (4015), a Y-axis motor (4016), a Z-axis motor (607), four print head assemblies (3), the centralized control core board (702), the relay (704) and the four drive boards (705), and the four drive boards (705) are electrically connected to the four print head assemblies (3) via four relays (704) respectively.

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