Automatic material changing device for 3D printing and 3D printer

Abstract

The invention discloses a 3D printing automatic material changing device and a 3D printer, the 3D printing automatic material changing device comprises a fixed side edge block, the inner wall of the fixed side edge block is provided with an insertion groove, and the middle of the fixed side edge block is provided with a built-in groove; one side of the connecting and inserting assembly is movably connected with the surface of the fixed side edge block, and the connecting and inserting assembly is used for being connected with the fixed side edge block in a rapid material changing mode; the bottom of the base plate is fixedly connected with the top of the plugging assembly; the invention relates to the technical field of 3D printing. According to the automatic material changing device for 3D printing and the 3D printer, by means of the arrangement of the material guiding assembly, a device driving motor operates to directly drive a driven pressing wheel and a pressed limiting wheel to move, then the driven pressing wheel and the pressed limiting wheel are controlled to be stably conveyed, meanwhile, a material guiding sleeve is matched for limiting materials, and meanwhile, the material guiding assembly is matched with a guiding groove block for use; and the driving motor is directly and reversely started to pump the materials back to one section, so that the materials at the head of the printer head are prevented from being solidified and discarded.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printing, and in particular to a 3D printing automatic material changing device and a 3D printer. Background Art

[0002] 3D printing, also known as additive manufacturing, is a technology that creates three-dimensional objects by depositing materials layer by layer.

[0003] The patent with announcement number CN213648689U discloses a 3D printer material changing device, which includes a housing, a turntable arranged inside the housing, and at least two feed pipes, the feed pipes penetrate and are fixed on the turntable, a heating nozzle is arranged at the bottom of the housing, each feed pipe is connected to the heating nozzle through the rotation of the turntable, a feed drive device is arranged on the feed pipe, a rotation drive device is arranged on the turntable, and a control panel connected to the feed drive device and the rotation drive device is also arranged on the housing. The patent has simple material changing operation, high automation, and simple and stable structure.

[0004] As shown in the above technology, most of the raw materials for ordinary 3D printing are plastics. When ordinary plastics are used, the print head needs to heat and melt them before printing layer by layer. The plastics are placed in a circular roll. After each printing, the residual heat of the print head will melt the temporary stored materials inside. The melted materials will naturally cool down and become waste. Before each printing, the print head needs to be heated and then automatically ejected from the last printing waste. This operation is very time-consuming, and the material box of ordinary 3D printing has a complex structure and extremely low disassembly and assembly efficiency, which affects the material replacement efficiency. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a 3D printing automatic material changing device and a 3D printer, which solve the problem that the residual heat of the print head will melt the temporarily stored material inside the print head, and the melted material will naturally cool down to become waste. Before each printing, the print head needs to be heated and then automatically ejected from the last printing waste. This operation is very time-consuming, and the material box of ordinary 3D printing has a complex structure and extremely low disassembly and assembly efficiency, which affects the material changing efficiency.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a 3D printing automatic material changing device, comprising:

[0007] A fixed side block, wherein the inner wall of the fixed side block is provided with a receiving slot, and the middle of the fixed side block is provided with a built-in slot;

[0008] A plug-in assembly, one side of which is movably connected to the surface of the fixed side block, and the plug-in assembly is used to connect with the fixed side block for rapid material change;

[0009] A base plate, the bottom of which is fixedly connected to the top of the connector assembly;

[0010] A material box assembly, the bottom of which is fixedly connected to the top of the base plate, and the material box assembly is used for stably storing materials;

[0011] A material guiding assembly, the bottom of which is fixedly connected to the bottom of the inner wall of the material box assembly, and the material guiding assembly is used for guiding the replacement of materials.

[0012] Preferably, the connector assembly includes a side plate fixedly connected to the top of the fixed side block, a baffle is fixedly connected to one side of the inner wall of the built-in groove, a limiting spring is fixedly connected to one side of the baffle, one end of the limiting spring is fixedly connected to a movable frame plate, and one side of the movable frame plate is fixedly connected to a connector column.

[0013] Preferably, the inner wall of the built-in groove is movably connected with a connector plate, and a movable circular groove is provided on the surface of the connector plate.

[0014] Preferably, the material box assembly includes a bottom frame fixedly connected to the top of the base plate, inclined plates are fixedly connected to both sides of the bottom frame, an introduction groove is opened in the middle of the inclined plate, the top of the bottom frame is movably connected to a top cover, and central plug plates are fixedly connected in the middle of both sides of the top cover.

[0015] Preferably, a limiting block is fixedly connected to the bottom of the inner wall of the bottom frame, a limiting groove is provided on the surface of the limiting block, an auxiliary rotating wheel is arranged on the surface of the limiting block through an inner shaft, and a material tray is movably connected to the inner wall of the limiting groove.

[0016] Preferably, the material guiding assembly includes a base plate fixedly connected to the bottom of the inner wall of the material box assembly, the top of the base plate is fixedly connected to a support rod, the top of the support rod is fixedly connected to a driving motor, the top of the driving motor is fixedly connected to a material conducting sleeve via a fixed sleeve, the output end of the driving motor is fixedly connected to a driving wheel via a coupling, one side of the surface of the driving wheel is transmission-connected to an auxiliary wheel, and the front side of the auxiliary wheel is fixedly connected to a pressure limiting wheel.

[0017] Preferably, the top of the base plate is fixedly connected to a back plate, one side of the back plate is fixedly connected to a compression spring, one end of the compression spring is fixedly connected to a side sleeve, and one side of the inner wall of the side sleeve is rotatably connected to a compression wheel.

[0018] This patent also discloses a 3D printer, including a 3D printing automatic material changing device and a printer body. A printer head is arranged on the inner wall of the printer body, and a guide slot block is fixedly connected to the top of the printer head.

[0019] The present invention provides a 3D printing automatic material changing device and a 3D printer. Compared with the prior art, it has the following beneficial effects:

[0020] 1. The 3D printing automatic material changing device and the 3D printer utilize the setting of the material guiding component. The device drives the motor to directly drive the movement between the clamping wheel and the pressure limiting wheel, thereby controlling the stable transmission thereof. At the same time, the material is limited by the material guide sleeve. At the same time, it is used in conjunction with the guide slot block. After the printing is completed, the driving motor can be directly reversed to draw back a section of the material to avoid the solidification and waste of the material at the head of the printer. At the same time, the waste material removal operation before each printing is avoided, thereby improving the printing efficiency. The material guide sleeve and the guide slot block are both arranged on the outside of the device, which is convenient for workers to place and install new materials when removing the cover to maintain the machine.

[0021] 2. The 3D printing automatic material changing device and the 3D printer utilize the setting of the plug-in assembly. The device uses the side plate to directly guide the plug-in plate, which can ensure that the plug-in plate can be quickly inserted into the plug-in slot on the inner side of the fixed side block within a certain range. After insertion, the movable frame plate can be directly operated to insert the plug-in column into the movable circular groove to directly position and fix it. The material box assembly on the top of the base plate can be quickly changed, which is convenient for overall replacement.

[0022] 3. The 3D printing automatic material changing device and the 3D printer utilize the setting of the material box assembly. The device adopts the central plug-in plate and the inclined plate to cover the top cover on the top of the bottom frame. The inner side of the bottom frame is inclined for quick sliding connection. At the same time, the limit groove in the limit block is set in a maintenance arc, which can reliably limit the material tray, and the auxiliary wheel rolling setting is convenient for taking materials from the surface of the material tray. It can rotate stably and improve the stability of the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0024] Figure 2 It is a side perspective schematic diagram of the present invention;

[0025] Figure 3 For the present invention Figure 2 A partial enlarged view of the middle A;

[0026] Figure 4 is a three-dimensional cross-sectional view of the present invention;

[0027] Figure 5 For the present invention Figure 4 A partial enlarged view of point B in the middle;

[0028] Figure 6 For the present invention Figure 4 A partial enlarged view of point C in the middle;

[0029] Figure 7 It is a three-dimensional schematic diagram of the limit block structure and the material tray structure of the present invention;

[0030] Figure 8 A perspective cross-sectional view of the present invention from the side;

[0031] Fig. 9 For the present invention Figure 8 A partial enlarged view of point D in the middle;

[0032] Fig.10 It is a schematic diagram of the three-dimensional structure of the material guiding assembly of the present invention.

[0033] In the figure: 1. fixed side block; 2. socket; 3. built-in slot; 4. plug-in assembly; 41. side plate; 42. baffle; 43. limit spring; 44. movable frame; 45. plug-in column; 46. plug-in plate; 47. movable circular groove; 5. base plate; 6. material box assembly; 61. bottom frame; 62. inclined plate; 63. introduction groove; 64. top cover; 65. central plug-in plate; 66. limit block; 67. limit groove; 68. auxiliary rotating wheel; 69. material tray; 7. material guiding assembly; 71. base plate; 72. support rod; 73. driving motor; 74. driving wheel; 75. auxiliary wheel; 76. pressure limit wheel; 77. back plate; 78. clamping spring; 79. side sleeve; 710. clamping wheel; 711. material guide sleeve; 8. printer body; 9. printer head; 10. guide slot block. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-Figure 10 , the present invention provides two technical solutions:

[0036] Embodiment 1, a 3D printing automatic material changing device, comprising:

[0037] A fixed side block 1, the inner wall of which is provided with a receiving slot 2, and the middle of which is provided with a built-in slot 3;

[0038] A plug-in assembly 4, one side of which is movably connected to the surface of the fixed side block 1, and the plug-in assembly 4 is used for fast material replacement connection with the fixed side block;

[0039] A base plate 5, the bottom of which is fixedly connected to the top of the connector assembly 4;

[0040] A material box assembly 6, the bottom of which is fixedly connected to the top of the base plate 5, and the material box assembly 6 is used for stably storing the materials;

[0041] The material guide assembly 7, the bottom of the material guide assembly 7 is fixedly connected to the bottom of the inner wall of the material box assembly 6, and the material guide assembly 7 is used to guide the replacement of materials. By utilizing the setting of the material guide assembly 7, the device drives the motor 73 to run and directly drives the movement between the clamping wheel 710 and the pressure limiting wheel 76, thereby controlling its stable transmission, and at the same time cooperating with the material guide sleeve 711 to limit the material, and at the same time cooperating with the guide slot block 10, it can directly reverse the drive motor 73 after printing, and draw the material back for a while, so as to avoid the solidification and waste of the material at the head of the printer head 9, and at the same time avoid the waste removal operation before each printing, thereby improving the printing efficiency, and the material guide sleeve 711 and the guide slot block 10 are both arranged on the outside of the device, which is not only convenient for workers to place and install new materials when removing the cover to maintain the machine.

[0042] Embodiment 2, which is mainly different from Embodiment 1, is a 3D printing automatic material changing device, the connector assembly 4 includes a side plate 41 fixedly connected to the top of the fixed side block 1, the side plate 41 is located at the top of the connector slot 2, a baffle 42 is fixedly connected to one side of the inner wall of the built-in slot 3, a limit spring 43 is fixedly connected to one side of the baffle 42, the limit spring 43 has a built-in damper, one end of the limit spring 43 is fixedly connected to a movable frame plate 44, one side of the movable frame plate 44 is fixedly connected to a connector column 45, the inner wall of the built-in slot 3 is movably connected to a connector plate 46, and a movable circular groove 47 is provided on the surface of the connector plate 46, and a material box assembly 6 includes a bottom frame 61 fixedly connected to the top of the base plate 5, and both sides of the bottom frame 61 are fixedly connected to inclined plates 6 2. An introduction groove 63 is provided in the middle of the inclined plate 62. A top cover 64 is movably connected to the top of the bottom frame 61. Central plug plates 65 are fixedly connected to the middle of both sides of the top cover 64. The surface of the central plug plate 65 is adapted to the inner surface of the introduction groove 63. A limiting block 66 is fixedly connected to the bottom of the inner wall of the bottom frame 61. A limiting groove 67 is provided on the surface of the limiting block 66. An auxiliary rotating wheel 68 is provided on the surface of the limiting block 66 through an inner shaft. A material tray 69 is movably connected to the inner wall of the limiting groove 67. The material guiding assembly 7 includes a base plate 71 fixedly connected to the bottom of the inner wall of the material box assembly 6. A support rod 72 is fixedly connected to the top of the base plate 71. A driving motor 73 is fixedly connected to the top of the support rod 72. The driving motor 73 is a stepping motor. The top of the driving motor 73 is fixedly connected to a material conducting sleeve 711 through a fixed sleeve, the output end of the driving motor 73 is fixedly connected to a driving wheel 74 through a coupling, one side of the surface of the driving wheel 74 is transmission-connected to an auxiliary wheel 75, the front of the auxiliary wheel 75 is fixedly connected to a pressure-limiting wheel 76, the top of the base plate 71 is fixedly connected to a back plate 77, one side of the back plate 77 is fixedly connected to a clamping spring 78, a damper is arranged on the inner wall of the clamping spring 78, one end of the clamping spring 78 is fixedly connected to a side sleeve 79, one side of the inner wall of the side sleeve 79 is rotatably connected to a clamping wheel 710, and by utilizing the setting of the plug-in assembly 4, the device adopts the side plate 41 to directly guide the plug-in board 46, so as to ensure that the plug-in board 46 can be quickly plugged in within a certain range. Into the connecting slot 2 on the inner side of the fixed side block 1, and after insertion, directly operate the movable frame plate 44, and can insert the connecting column 45 into the movable circular groove 47 to directly position and fix it, so that the material box assembly 6 on the top of the base plate 5 can be quickly replaced, which is convenient for overall replacement. Utilizing the setting of the material box assembly 6, the device adopts the central plug plate 65 and the inclined plate 62 to cover the top cover 64 on the top of the bottom frame 61. The inner side of the bottom frame 61 is inclined, and the fast sliding connection is achieved. At the same time, the limiting groove 67 in the limiting block 66 is set to maintain the arc, which can reliably limit the material tray 69, and the auxiliary wheel 68 is set to roll, which is convenient for taking materials from the surface of the material tray 69. It can rotate stably and improve the stability of the machine.

[0043] This patent also discloses a 3D printer, including a printer body 8, an inner wall of which is provided with a printer head 9, and a guide slot block 10 is fixedly connected to the top of the printer head 9.

[0044] The material mentioned in this application is 3D printing consumables with a diameter between 1-5 mm. The inner wall diameter of the material guide sleeve 711 is slightly larger than the diameter of the material and has friction. The surface of the top cover 64 has a through hole to ensure that the material can pass through. The inner wall of the limiting groove 67 is adapted to the size of the material tray 69, and the bottom of the base plate 5 is fixedly connected to the top of the connector plate 46.

[0045] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0046] During operation, the material tray 69 is placed on the surface of the auxiliary rotating wheel 68, and one end of the material consumables on the surface of the material tray 69 is passed through the material guide sleeve 711 and the guide slot block 10, and is clamped by the clamping wheel 710 and the pressure limiting wheel 76, and is finally inserted into the printer head 9. The clamping spring 78 on one side of the back plate 77 compacts the material through the side sleeve 79 and the clamping wheel 710. When printing starts, the driving motor 73 on the top of the support rod 72 runs, and drives the auxiliary wheel 75 to run through the driving wheel 74, and finally the pressure limiting wheel 76 drives the material to be transported downward. Once printing is completed, the driving motor 73 immediately rotates in the opposite direction to pull the material in the opposite direction. The end material enters the inside of the guide slot block 10 from the printer head 9 to avoid being melted by the high temperature inside the printer head 9. The material is pulled When pulling, the material tray 69 rotates inside the limit groove 67, and the edge of the material tray 69 rolls on the surface of the auxiliary rotating wheel 68. When the material tray 69 is replaced independently, it is only necessary to pull up the top cover 64 to separate the central plug plate 65 from the introduction groove 63 in the inclined plate 62, and then directly take out the corresponding material tray 69, and install the new material tray 69 step by step according to the above steps. When the material box assembly 6 on the top of the base plate 5 is replaced as a whole, the movable frame plate 44 is pulled, and the movable frame plate 44 drives the connecting column 45 to separate from the movable circular groove 47 on the surface of the connecting plate 46, and at the same time squeezes the limit spring 43 on one side of the baffle 42, and then pull up the base plate 5 and the connecting plate 46 to disassemble them as a whole. After replacing them, they can be installed by reversing the above steps. When the device is used up, it is restored.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A 3D printing automatic material changing device, characterized in that: include: A fixed side block (1), wherein the inner wall of the fixed side block (1) is provided with a receiving slot (2), and the middle of the fixed side block (1) is provided with a built-in slot (3); A plug-in assembly (4), one side of which is movably connected to the surface of the fixed side block (1), and the plug-in assembly (4) is used to connect with the fixed side block for rapid material change; A base plate (5), the bottom of the base plate (5) being fixedly connected to the top of the connector assembly (4); A material box assembly (6), the bottom of which is fixedly connected to the top of the base plate (5), and the material box assembly (6) is used for stably storing materials; A material guiding assembly (7), the bottom of which is fixedly connected to the bottom of the inner wall of the material box assembly (6), and the material guiding assembly (7) is used for guiding the replacement of materials.

2. The 3D printing automatic material changing device according to claim 1, characterized in that: The connector assembly (4) comprises a side plate (41) fixedly connected to the top of the fixed side block (1); a baffle (42) is fixedly connected to one side of the inner wall of the built-in groove (3); a limit spring (43) is fixedly connected to one side of the baffle (42); one end of the limit spring (43) is fixedly connected to a movable frame plate (44); and one side of the movable frame plate (44) is fixedly connected to a connector column (45).

3. The 3D printing automatic material changing device according to claim 1, characterized in that: The inner wall of the built-in groove (3) is movably connected to a connector plate (46), and a movable circular groove (47) is provided on the surface of the connector plate (46).

4. The 3D printing automatic material changing device according to claim 1, characterized in that: The material box assembly (6) comprises a bottom frame (61) fixedly connected to the top of the base plate (5), both sides of the bottom frame (61) are fixedly connected to inclined plates (62), the middle of the inclined plate (62) is provided with an introduction groove (63), the top of the bottom frame (61) is movably connected to a top cover (64), and the middle of both sides of the top cover (64) are fixedly connected to central plug plates (65).

5. The 3D printing automatic material changing device according to claim 4, characterized in that: A limiting block (66) is fixedly connected to the bottom of the inner wall of the bottom frame (61); a limiting groove (67) is provided on the surface of the limiting block (66); an auxiliary rotating wheel (68) is provided on the surface of the limiting block (66) via an inner shaft; and a material tray (69) is movably connected to the inner wall of the limiting groove (67).

6. The 3D printing automatic material changing device according to claim 1, characterized in that: The material guiding assembly (7) comprises a base plate (71) fixedly connected to the bottom of the inner wall of the material box assembly (6); the top of the base plate (71) is fixedly connected to a support rod (72); the top of the support rod (72) is fixedly connected to a driving motor (73); the top of the driving motor (73) is fixedly connected to a material conducting sleeve (711) via a fixing sleeve; the output end of the driving motor (73) is fixedly connected to a driving wheel (74) via a coupling; one side of the surface of the driving wheel (74) is transmission-connected to an auxiliary wheel (75); the front side of the auxiliary wheel (75) is fixedly connected to a pressure-limiting wheel (76).

7. The 3D printing automatic material changing device according to claim 6, characterized in that: The top of the base plate (71) is fixedly connected to a back plate (77), one side of the back plate (77) is fixedly connected to a compression spring (78), one end of the compression spring (78) is fixedly connected to a side sleeve (79), and one side of the inner wall of the side sleeve (79) is rotatably connected to a compression wheel (710).

8. A 3D printer, comprising the 3D printing automatic material changing device according to any one of claims 1 to 7, comprising a printer body (8), characterized in that: A printer head (9) is arranged on the inner wall of the printer body (8), and a guide slot block (10) is fixedly connected to the top of the printer head (9).

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