3D printer head convenient to replace

Abstract

The utility model discloses a 3D printer head convenient to replace, which comprises a switching mechanism and a switching motor mounted on one side of the top of the switching mechanism, a plurality of quick mounting mechanisms are arranged on one side of the bottom of the switching mechanism, a printer head body is arranged at the bottom of each quick mounting mechanism, and the switching mechanism comprises a switching rotating shaft. The bottom of the switching rotating shaft is rotationally connected with a switching rotating disc, first connecting holes are formed in the periphery of the interior of the switching rotating disc, a lifting material injection rod is arranged at the top of the first connecting hole in the left side, arc-shaped grooves are formed in the periphery of the outer side of the switching rotating disc, and a limiting sliding groove is formed in the position, close to the position between the two arc-shaped grooves, of the switching rotating disc. By arranging the switching mechanism, the switching motor can be used for achieving rotation of the switching rotary disc so as to switch the printer head body at the bottom of the switching rotary disc, and by arranging the rapid installation mechanism, rapid installation and replacement of the printer head body can be achieved by means of the characteristic that an installation clamping block is connected with an installation groove in a clamped mode.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printers, in particular to a 3D printer head which is easy to replace. Background Art

[0002] 3D printer, also known as three-dimensional printer, is a cumulative manufacturing technology that manufactures three-dimensional objects by printing and bonding materials layer by layer. At present, 3D printers are usually used to make samples. When the 3D printer is working, the raw materials are melted and sprayed out and bonded through the multi-directional movement of the nozzle. During the operation of existing 3D printers, the temperature of the print head is always very high, which often causes damage and needs to be replaced frequently. The existing print heads are often fixed directly by bolts, which are troublesome to replace and easily affect the model being printed.

[0003] Publication No. CN 218505232 U discloses a 3D printer head that is easy to replace. The print head is installed in the installation frame of the printer. When installing, it is only necessary to put the fixing blocks on both sides of the nozzle through the installation slot and rotate them until they are stuck in the fixing slot, and then tighten the fixing bolts in the fixing mechanism to complete the installation. The installation is fast and the stability after installation is high. When the print head is disassembled, the rotating handle in the fixing mechanism is first rotated to release the first fixing rod, so that the thrust of the connecting spring on the second fixing rod disappears, and then the nozzle is pressed down and rotated to take the nozzle downward. The disassembly is fast to avoid affecting the printing process. When the nozzle in the print head is installed in the installation frame, fixing mechanisms are respectively provided on both sides of the fixing block, and the fixing block is squeezed by the fixing bolts and the rubber pad, and the second fixing rod is inserted into the fixing slot, and the fixing spring pushes the card block to squeeze the fixed card block, which greatly improves the stability after installation and ensures the stability of the printing process. However, the patent still has the following problems in actual use:

[0004] Although the easily replaceable 3D printer head can be installed by simply inserting the fixing blocks on both sides of the nozzle through the installation slots and rotating them until they are locked in the locking slots, and then tightening the fixing bolts in the fixing mechanism, the installation is fast. However, when replacing the nozzle, the printer needs to be stopped, resulting in the printer being unable to work normally. At the same time, frequent replacement of the nozzle will affect the working efficiency of the printer.

[0005] A 3D printer head that is easy to replace is proposed to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a 3D printer head that is easy to replace, so as to solve the problem that the 3D printer head that is easy to replace proposed in the above background technology can be installed by only inserting the fixing blocks on both sides of the nozzle through the installation groove and rotating them until they are stuck in the fixing groove, and then tightening the fixing bolts in the fixing mechanism, and the installation is fast, but when the nozzle is replaced, the printer needs to be stopped, resulting in the printer being unable to work normally, and the frequent replacement of the nozzle will affect the working efficiency of the printer.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a 3D printer head that is easy to replace, comprising a switching mechanism, and a switching motor installed on one side of the top of the switching mechanism;

[0008] A plurality of quick installation mechanisms are arranged on one side of the bottom of the switching mechanism, and a printer head body is arranged at the bottom of the quick installation mechanism;

[0009] Also includes:

[0010] The switching mechanism comprises a switching rotating shaft, the bottom of which is rotatably connected to a switching rotating disk, and the switching rotating disk is provided with first connecting holes around its periphery;

[0011] Among them, a lifting injection rod is arranged at the top of the first connecting hole on the left side, and arc grooves are arranged around the outer side of the switching turntable;

[0012] Among them, a limited sliding groove is arranged between the switching turntable and the two arc grooves, and the output end of the switching motor is fixedly connected with a circular rotating bracket.

[0013] Preferably, a switching rotating block is fixedly connected to the bottom of the circular rotating bracket, a rotating groove is opened on one side of the switching rotating block, a limiting support column is fixedly installed on one side of the bottom of the circular rotating bracket, and the bottom of the limiting support column is rotatably connected to a guide shaft.

[0014] Preferably, the quick installation mechanism includes a mounting sleeve, a mounting groove is provided on the inner side of the bottom of the mounting sleeve, a mounting connecting rod is provided inside the mounting groove, a mounting clamping block is fixedly connected to the bottom of the mounting connecting rod, a first oblique groove is provided on the outer side of the top of the mounting clamping block, and fixed brackets are symmetrically installed on both sides of the mounting sleeve near the mounting groove.

[0015] Preferably, a rotating gear is provided at the inner center position of the fixed bracket, and the inner center position of the rotating gear is rotatably connected to a gear rotating shaft, the top and bottom of the rotating gear are respectively meshed with a first meshing rack and a second meshing rack, and the outer sides of the first meshing rack and the second meshing rack are slidably connected with a rack slide rail.

[0016] Preferably, a second oblique groove is provided on the left side of the first meshing rack, a damping telescopic rod is fixedly connected to the right side of the first meshing rack and the left side of the second meshing rack, a damping spring is slidably connected to the outer side of the damping telescopic rod, and an unlocking button is fixedly connected to the end of the second meshing rack away from the damping spring.

[0017] Preferably, the mounting sleeve is provided with a second connecting hole near the top of the mounting groove, the printer head body is fixedly mounted on the bottom of the mounting connecting rod, a raw material ejection hole is provided inside the printer head body, and the mounting sleeve is fixedly mounted on the bottom of the switching turntable.

[0018] Preferably, the switching rotating block is fitted and connected with the arc groove, the limiting support column is slidably connected with the limiting sliding groove, and the guide rotating shaft is fitted and connected with the bottom of the switching rotating disk.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows: the 3D printer head that is easy to replace can use the switching motor to realize the rotation of the switching turntable to switch the printer head body at the bottom of the switching turntable by setting a switching mechanism, and can use the characteristics of the mounting clamping block and the mounting groove to realize the rapid installation and replacement of the printer head body by setting a quick installation mechanism. The specific contents are as follows:

[0020] 1. By setting a switching mechanism, the switching motor can be used to drive the circular rotating bracket and the switching rotating block to rotate. The rotation of the switching turntable is realized by using the characteristics of the rotating groove being fitted and connected with the switching turntable and the limiting support column being slidably connected with the limiting slide groove. Since the arc groove and the limiting slide groove are symmetrically arranged around the outer side of the switching turntable, when the switching motor drives the circular rotating bracket and the switching rotating block to rotate one circle, the switching turntable rotates ninety degrees, which can timely switch the printer head body at the bottom of the switching turntable to avoid the phenomenon of excessive temperature of the printer head body, thereby causing damage. At the same time, by setting a switching mechanism, the 3D printer can be stopped for replacement, thereby improving the working efficiency of the 3D printer;

[0021] 2. By setting up a quick installation mechanism, the characteristics of the installation clamping block and the installation slot can be utilized to realize the quick installation and replacement of the printer head body. When the printer head body needs to be replaced, the second meshing rack is driven to slide inside the rack slide rail by pressing the unlocking button. At the same time, the meshing action between the rotating gear, the first meshing rack and the second meshing rack is utilized to realize the sliding of the first meshing rack, so that the second inclined groove is separated from the installation clamping block, and the printer head body can be pulled out from the inside of the installation sleeve, and the new printer head body can be inserted into the inside of the installation slot. By utilizing the relative sliding characteristics of the second inclined groove and the first inclined groove, the installation clamping block passes over the first meshing rack, thereby fixing the installation clamping block, and the printer head body can be quickly replaced, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0023] Figure 2 It is a three-dimensional schematic diagram of the switching mechanism in the utility model when viewed from above;

[0024] Figure 3 This is a schematic diagram of the three-dimensional structure of the switching mechanism in the utility model when viewed from above;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the cross section of the installation sleeve in the quick installation mechanism of the utility model;

[0026] Figure 5 For this utility model Figure 4 A schematic diagram of the enlarged structure of the middle A area;

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the cross section of the fixing bracket in the utility model.

[0028] In the figure: 1. Switching mechanism; 101. Switching rotating shaft; 102. Switching turntable; 103. First connecting hole; 104. Lifting injection rod; 105. Arc groove; 106. Limiting slide groove; 107. Switching motor; 108. Circular rotating bracket; 109. Switching rotating block; 110. Rotating groove; 111. Limiting support column; 112. Guide rotating shaft; 2. Quick installation mechanism; 201. Installation sleeve; 202. Installation groove; 203 , install the connecting rod; 204, install the locking block; 205, the first inclined groove; 206, the fixing bracket; 207, the rotating gear; 208, the gear rotating shaft; 209, the first meshing rack; 210, the second meshing rack; 211, the rack slide rail; 212, the second inclined groove; 213, the damping telescopic rod; 214, the damping spring; 215, the unlocking button; 216, the second connecting hole; 217, the printer head body; 218, the raw material ejection hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] See also Figure 1-6 The utility model provides a technical solution: a 3D printer head that is easy to replace, including a switching mechanism 1, and a switching motor 107 installed on one side of the top of the switching mechanism 1, a plurality of quick installation mechanisms 2 are arranged on one side of the bottom of the switching mechanism 1, and a printer head body 217 is arranged at the bottom of the quick installation mechanism 2, the switching mechanism 1 includes a switching rotating shaft 101, the bottom of the switching rotating shaft 101 is rotatably connected to a switching rotating disk 102, and the inside of the switching rotating disk 102 is provided with first connecting holes 103 around, wherein the first connecting hole 103 on the left side A lifting injection rod 104 is provided at the top, and arc grooves 105 are provided around the outer side of the switching turntable 102, wherein a limited position slide groove 106 is provided between the switching turntable 102 and the two arc grooves 105, and a circular rotating bracket 108 is fixedly connected to the output end of the switching motor 107, and a switching rotating block 109 is fixedly connected to the bottom of the circular rotating bracket 108, and a rotating groove 110 is provided on one side of the switching rotating block 109, and a limiting support column 111 is fixedly installed on one side of the bottom of the circular rotating bracket 108, and the bottom of the limiting support column 111 The guide shaft 112 is rotatably connected, the switching rotating block 109 is fitted and connected with the arc groove 105, the limiting support column 111 is slidably connected with the limiting slide groove 106, and the guide shaft 112 is fitted and connected with the bottom of the switching turntable 102. By setting the switching mechanism 1, the circular rotating bracket 108 and the switching rotating block 109 can be driven to rotate by the switching motor 107. The switching turntable 102 is realized by the characteristics of the fitting connection between the rotating groove 110 and the switching turntable 102 and the characteristics of the sliding connection between the limiting support column 111 and the limiting slide groove 106. Rotation, since the arc groove 105 and the limiting slide groove 106 are symmetrically arranged around the outer side of the switching turntable 102, when the switching motor 107 drives the circular rotating bracket 108 and the switching rotating block 109 to rotate one circle, the switching turntable 102 rotates ninety degrees, and the printer head body 217 at the bottom of the switching turntable 102 can be switched in time to avoid the printer head body 217 from being overheated and thus damaged. At the same time, by setting the switching mechanism 1, the 3D printer can be stopped for replacement, thereby improving the working efficiency of the 3D printer.

[0031] The quick installation mechanism 2 includes a mounting sleeve 201, a mounting groove 202 is provided on the inner side of the bottom of the mounting sleeve 201, a mounting connecting rod 203 is provided inside the mounting groove 202, a mounting clamping block 204 is fixedly connected to the bottom of the mounting connecting rod 203, a first inclined groove 205 is provided on the outer side of the top of the mounting clamping block 204, and a fixed bracket 206 is symmetrically installed on both sides of the mounting sleeve 201 near the mounting groove 202, a rotating gear 207 is provided at the inner center position of the fixed bracket 206, a gear rotating shaft 208 is rotatably connected to the inner center position of the rotating gear 207, a first meshing rack 209 and a second meshing rack 210 are meshed and connected at the top and bottom of the rotating gear 207 respectively, a rack slide rail 211 is slidably connected to the outer sides of the first meshing rack 209 and the second meshing rack 210, and the first meshing rack 209 and the second meshing rack 210 are slidably connected to the outer sides of the first meshing rack 209 and the second meshing rack 210, and the first meshing rack 209 and the second meshing rack 210 are slidably connected to the outer sides of the first meshing rack 209 and the second meshing rack 210. 09 is provided with a second inclined slot 212 on the left side, and a damping telescopic rod 213 is fixedly connected to the right side of the first meshing rack 209 and the left side of the second meshing rack 210. A damping spring 214 is slidably connected to the outer side of the damping telescopic rod 213, and an unlocking button 215 is fixedly connected to the end of the second meshing rack 210 away from the damping spring 214. A second connecting hole 216 is provided on the mounting sleeve 201 near the top of the mounting groove 202, and a printer head body 217 is fixedly installed on the bottom of the mounting connecting rod 203. A raw material ejection hole 218 is provided inside the printer head body 217, and the mounting sleeve 201 is fixedly installed on the bottom of the switching turntable 102. By setting up a quick installation mechanism 2, the characteristics of the mounting snap-fit ​​block 204 and the mounting groove 202 can be utilized to realize the quick installation and replacement of the printer head body 217.

[0032] Working Principle: Before using this easy-to-replace 3D printer head, you need to check the overall condition of the device to make sure it can work normally. Figure 1 - Figure 6As shown, first, when the 3D printer is working, the printer head body 217 may overheat due to long-term operation. In order to protect the printer head body 217, the switching motor 107 is started to drive the circular rotating bracket 108 and the switching rotating block 109 to rotate. The rotating groove 110 is connected with the switching turntable 102 by a close fit, and the limiting support column 111 is slidably connected with the limiting slide groove 106 to realize the rotation of the switching turntable 102. Since the arc groove 105 and the limiting slide groove 106 are symmetrically arranged around the outer side of the switching turntable 102, when the switching motor 107 drives the circular rotating bracket 108 and the switching rotating block 109 to rotate one circle, the switching turntable 102 rotates ninety degrees, so that the printer head body 217 at the bottom of the switching turntable 102 can be switched in time, so as to avoid the overheating of the printer head body 217, thereby causing The printer head body 217 is cooled while the printer head body 217 is damaged. Secondly, when the printer head body 217 needs to be replaced, the unlocking button 215 is pressed to drive the second meshing rack 210 to slide inside the rack slide rail 211. At the same time, the meshing action between the rotating gear 207, the first meshing rack 209 and the second meshing rack 210 is utilized to realize the sliding of the first meshing rack 209, so that the second inclined groove 212 is separated from the installation engaging block 204, and the printer head body 217 can be pulled out from the inside of the installation sleeve 201, and the new printer head body 217 can be inserted into the inside of the installation slot 202. By utilizing the relative sliding characteristics of the second inclined groove 212 and the first inclined groove 205, the installation engaging block 204 is passed over the first meshing rack 209, thereby fixing the installation engaging block 204, and the printer head body 217 can be quickly replaced, thereby improving work efficiency.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A 3D printer head that is easy to replace, comprising a switching mechanism (1), and a switching motor (107) mounted on one side of the top of the switching mechanism (1); A plurality of quick installation mechanisms (2) are arranged on one side of the bottom of the switching mechanism (1), and a printer head body (217) is arranged at the bottom of the quick installation mechanism (2); It is characterized in that Also includes: The switching mechanism (1) comprises a switching rotating shaft (101), the bottom of the switching rotating shaft (101) is rotatably connected to a switching rotating disk (102), and the switching rotating disk (102) is provided with first connecting holes (103) on all sides thereof; A lifting injection rod (104) is provided at the top of the first connecting hole (103) on the left side, and arc grooves (105) are provided around the outer side of the switching turntable (102); A limiting sliding groove (106) is provided between the two arc-shaped grooves (105) near the switching turntable (102), and a circular rotating bracket (108) is fixedly connected to the output end of the switching motor (107).

2. The easily replaceable 3D printer head according to claim 1, characterized in that: A switching rotating block (109) is fixedly connected to the bottom of the circular rotating bracket (108), a rotating groove (110) is provided on one side of the switching rotating block (109), a limiting support column (111) is fixedly installed on one side of the bottom of the circular rotating bracket (108), and a guide rotating shaft (112) is rotatably connected to the bottom of the limiting support column (111).

3. The easily replaceable 3D printer head according to claim 1, characterized in that: The quick installation mechanism (2) comprises an installation sleeve (201), the bottom inner side of the installation sleeve (201) is provided with an installation groove (202), the interior of the installation groove (202) is provided with an installation connecting rod (203), the bottom of the installation connecting rod (203) is fixedly connected with an installation clamping block (204), the top outer side of the installation clamping block (204) is provided with a first inclined groove (205), and the installation sleeve (201) is symmetrically provided with fixed brackets (206) on both sides close to the installation groove (202).

4. The easily replaceable 3D printer head according to claim 3, characterized in that: A rotating gear (207) is arranged at the inner center position of the fixed bracket (206); a gear rotating shaft (208) is rotatably connected to the inner center position of the rotating gear (207); a first meshing rack (209) and a second meshing rack (210) are meshedly connected at the top and bottom of the rotating gear (207) respectively; and rack guide rails (211) are slidably connected to the outer sides of the first meshing rack (209) and the second meshing rack (210).

5. The easily replaceable 3D printer head according to claim 4, characterized in that: A second inclined groove (212) is provided on the left side of the first meshing rack (209); a damping telescopic rod (213) is fixedly connected to the right side of the first meshing rack (209) and the left side of the second meshing rack (210); a damping spring (214) is slidably connected to the outer side of the damping telescopic rod (213); and an unlocking button (215) is fixedly connected to one end of the second meshing rack (210) away from the damping spring (214).

6. The easily replaceable 3D printer head according to claim 5, characterized in that: The mounting sleeve (201) is provided with a second connection hole (216) near the top of the mounting groove (202); the printer head body (217) is fixedly mounted on the bottom of the mounting connection rod (203); a raw material ejection hole (218) is provided inside the printer head body (217); and the mounting sleeve (201) is fixedly mounted on the bottom of the switching turntable (102).

7. The easily replaceable 3D printer head according to claim 2, characterized in that: The switching rotating block (109) is fitted and connected to the arc groove (105), the limiting support column (111) is slidably connected to the limiting sliding groove (106), and the guiding rotating shaft (112) is fitted and connected to the bottom of the switching rotating disk (102).

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