3D printing head for FDM

Abstract

The utility model discloses a 3D printing head for FDM, which comprises a printing head control mechanism, the bottom end of the printing head control mechanism is connected with a cleaning protection mechanism, and the top end of the cleaning protection mechanism is connected with a driving control mechanism; the rotating frame and the adjusting frame are driven to rotate through the adjusting gear ring, so that the cleaning winding roller connected to one end of the adjusting frame is conveniently moved to the bottom end of the printing output head, wire drawing materials are wound and collected through the cleaning winding roller, and the hidden danger problem of material wire drawing connection in products or in product gaps is avoided; the practicability of the 3D printing head for FDM is improved, and the accuracy of 3D printing is improved; the collecting barrel connected to one end of the adjusting frame is moved to the bottom end of the printing output head to receive waste, the protection base clamped to the bottom end of the collecting barrel is stably in contact with the bottom end of the printing output head, and the hidden danger problems that due to the fact that materials of the printing output head are moved out in an uncontrolled mode, products are damaged, and a workbench is polluted are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing head technical field, concretely is a 3D printing head for FDM. BACKGROUND

[0002] The material that FDM three -dimensional printer adopts FDM is thermoplastic material generally, such as wax, ABS, nylon etc., is with silk -like supply, material is heated and melts in the spray head, and the spray head moves along the part section contour and filling track, extrudes the material that melts simultaneously, and material rapidly solidifies, and coagulates with surrounding material, and 3D printing head is the key component in 3D printer responsible for converting raw materials into object, it through melting extrusion and layering, raw materials are stacked into the shape required layer by layer.

[0003] In prior art, when 3D printing, the 3D printing head for FDM is usually a metal discharge pipe head, so that the first extruded non-uniform material cannot be collected and processed when printing, and the printing head cannot be cleaned in real time during printing, so that there is a problem of wire drawing when the printing head moves to replace the printing position, the printed products have more burrs between the connections, and the printing cannot be quickly stopped when stopping, the residual material is easily discharged due to inertia or weight, which affects the product quality and easily causes the pollution of the operation table, therefore, a 3D printing head for FDM is needed. UTILITY MODEL CONTENTS

[0004] In order to solve the above problems, the purpose of the utility model is to provide a 3D printing head for FDM to solve the problems raised in the background art.

[0005] In order to achieve the above purpose, the utility model provides a 3D printing head for FDM, which comprises a printing head control mechanism, the bottom end of the printing head control mechanism is connected with a cleaning protection mechanism, the top end of the cleaning protection mechanism is connected with a driving control mechanism; the cleaning protection mechanism comprises a positioning ring, one end of the positioning ring is fixedly provided with a lifting frame, one end of the lifting frame top is rotatably provided with a rotating frame, the bottom end of the rotating frame is fixedly provided with an adjusting frame, both ends of the adjusting frame are fixedly provided with positioning seats, one side of one of the positioning seats is rotatably provided with a positioning disc, one end of the positioning disc is fixedly provided with a cleaning winding roller, one end of the positioning disc is fixedly provided with a first positioning bevel gear through the positioning seat, the middle position of the other positioning seat is rotatably provided with a connecting rod, one end of the connecting rod is fixedly provided with a collecting cylinder, the bottom end of the collecting cylinder is clamped with a protection seat, the other end of the connecting rod is fixedly provided with a second positioning bevel gear through the positioning seat, the middle position of the adjusting frame top is rotatably provided with a driving bevel gear.

[0006] In one example, the driving control mechanism comprises a positioning frame, one end of the top of the lifting frame is provided with an adjusting gear, the top of the rotating frame is fixedly provided with an adjusting gear ring, the tooth surface of the adjusting gear is engaged with the tooth surface of the adjusting gear ring, the middle position of the adjusting gear ring is provided with a positioning shaft, one end of the bottom of the positioning frame is fixedly provided with a first motor, the output end of the first motor is fixedly connected with the middle position of the adjusting gear, the other end of the bottom of the positioning frame is fixedly provided with a second motor, and the output end of the second motor is fixedly connected with the top end of the positioning shaft.

[0007] In one example, the bottom end of the positioning shaft is fixedly connected with the middle position of the driving bevel gear.

[0008] In one example, the printing head control mechanism comprises a printing connecting frame, the bottom end of the printing connecting frame is fixedly provided with a printing control base, the middle position of the bottom of the printing control base is connected with a printing output seat, the bottom end of the printing output seat is communicated with a printing output head, and the bottom of the printing control base is provided with a limiting groove.

[0009] In one example, one end of the outer wall of the printing output seat is fixedly provided with a fixing frame, the top end of the fixing frame is fixedly provided with an electric telescopic rod, the telescopic end of the electric telescopic rod is fixedly connected with the top end of the positioning frame, and the inner wall of the positioning ring is connected with one end of the outer wall of the printing output seat.

[0010] In one example, the position of the cleaning protection mechanism corresponds to the position of the limiting groove.

[0011] In one example, the first motor, the second motor and the electric telescopic rod are all electrically connected with the control end of the external FDM printer for intelligent control.

[0012] Compared with the prior art, the beneficial effects of the utility model are that: the rotating frame and the adjusting frame are driven to rotate through the adjusting gear ring, the cleaning winding roller connected to one end of the adjusting frame is moved to the bottom end of the printing output head, the positioning disc and the cleaning winding roller are driven to rotate through the first positioning bevel gear, the cleaning winding roller collects the pulled material, the hidden trouble problem of material pulling connection in the product or the product gap is avoided, the practicability of the 3D printing head for FDM is increased, and the accuracy of 3D printing is improved.

[0013] The collecting cylinder connected to one end of the adjusting frame is moved to the bottom end of the printing output head to receive waste materials, the protection seat at the bottom end of the collecting cylinder is stably contacted with the bottom end of the printing output head, the protection seat is stably protected at the bottom end of the printing output head, and the hidden trouble problem of product damage and workbench pollution caused by uncontrolled movement of the material in the printing output head is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure schematic view of the utility model;

[0015] Figure 2 It is a structure schematic view of the utility model printing head control mechanism structure;

[0016] Figure 3 It is a structure schematic view of the utility model cleaning protection mechanism and drive control mechanism distribution structure;

[0017] Figure 4 It is a drive structure schematic view of the utility model drive control mechanism;

[0018] Figure 5 It is a structure schematic view of the utility model cleaning protection mechanism.

[0019] In the drawing: 1, printing head control mechanism;101, printing connecting frame;102, printing control base;103, printing output seat;104, limiting groove;105, printing output head;2, cleaning protection mechanism;201, positioning ring;202, lifting frame;203, positioning shaft;204, rotating frame;205, adjusting frame;206, positioning seat;207, drive bevel gear;208, first positioning bevel gear;209, positioning disc;210, cleaning winding roller;211, second positioning bevel gear;212, connecting rod;213, collection cylinder;214, protection seat;3, fixed frame;4, electric telescopic rod;5, drive control mechanism;501, positioning frame;502, first motor;503, adjusting gear;504, second motor;505, adjusting gear ring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a 3D printing head for FDM, including printing head control mechanism 1, the bottom end of printing head control mechanism 1 is connected with cleaning protection mechanism 2, and the top end of cleaning protection mechanism 2 is connected with drive control mechanism 5.

[0022] The cleaning protection mechanism 2 comprises a positioning ring 201, one end of the positioning ring 201 is fixedly provided with a lifting frame 202, one end of the top of the lifting frame 202 is rotatably provided with a rotating frame 204, the bottom end of the rotating frame 204 is fixedly provided with an adjusting frame 205, both ends of the adjusting frame 205 are fixedly provided with positioning seats 206, one side of one of the positioning seats 206 is rotatably provided with a positioning disc 209, one end of the positioning disc 209 is fixedly provided with a cleaning winding roller 210, the positioning disc 209 passes through the positioning seat 206 and is fixedly provided with a first positioning bevel gear 208 at one end, the middle position of the other positioning seat 206 is rotatably provided with a connecting rod 212, one end of the connecting rod 212 is fixedly provided with a collecting cylinder 213, the bottom end of the collecting cylinder 213 is clamped with a protection seat 214, the other end of the connecting rod 212 passes through the positioning seat 206 and is fixedly provided with a second positioning bevel gear 211, the top of the adjusting frame 205 is rotatably provided with a driving bevel gear 207 in the middle position;

[0023] The driving control mechanism 5 comprises a positioning frame 501, one end of the top of the lifting frame 202 is rotatably provided with an adjusting gear 503, the top end of the rotating frame 204 is fixedly provided with an adjusting gear ring 505, the tooth surface of the adjusting gear 503 is engaged with the tooth surface of the adjusting gear ring 505, the middle position of the adjusting gear ring 505 is inserted with the positioning shaft 203, one end of the bottom of the positioning frame 501 is fixedly provided with a first motor 502, the output end of the first motor 502 is fixedly connected with the middle position of the adjusting gear 503, the other end of the bottom of the positioning frame 501 is fixedly provided with a second motor 504, the output end of the second motor 504 is fixedly connected with the top end of the positioning shaft 203;

[0024] The bottom end of the positioning shaft 203 is fixedly connected with the middle position of the driving bevel gear 207;

[0025] When the 3D printing head for FDM needs to be used, the printing head control mechanism 1 is installed at the output end of the 3D printer, the printing work is started, and at the beginning of the printing work, the positioning frame 501, the positioning ring 201 and the lifting frame 202 are moved downward by the telescopic end of the electric telescopic rod 4 fixed at the top end of the fixing frame 3, so that the height of the collecting cylinder 213 is lower than the height of the printing output head 105, the adjusting gear 503 is driven to rotate by the output end of the first motor 502 fixed on one side of the positioning frame 501, so that the tooth surface of the adjusting gear 503 meshes with the tooth surface of the adjusting tooth ring 505, the rotating frame 204 is driven to rotate by the adjusting tooth ring 505, the adjusting frame 205 is driven to rotate by the rotating frame 204, so that the collecting cylinder 213 connected to one end of the adjusting frame 205 is moved to the bottom end of the printing output head 105 for waste material collection, when the printing is temporarily ended, the adjusting mode is adjusted by the same way, the positioning shaft 203 is driven to rotate by the second motor 504 fixed at the bottom end of the positioning frame 501, the driving bevel gear 207 is driven to rotate by the positioning shaft 203, the tooth surface of the driving bevel gear 207 meshes with the tooth surface of the second positioning bevel gear 211, the protective seat 214 at the bottom end of the collecting cylinder 213 stably contacts the bottom end of the printing output head 105, the protective seat 214 stably protects the bottom end of the printing output head 105, and the materials in the printing output head 105 are prevented from being uncontrollably moved out to cause product damage and workbench pollution hidden trouble;

[0026] When the printing is interrupted and the printing head needs to be moved to other positions for continuous printing, the cleaning winding roller 210 connected to one end of the adjusting frame 205 is moved to the bottom end of the printing output head 105 by rotating the adjusting gear 503 by the output end of the first motor 502 fixed on one side of the positioning frame 501, meshing the tooth surface of the adjusting gear 503 with the tooth surface of the adjusting tooth ring 505, rotating the rotating frame 204 by the adjusting tooth ring 505, and rotating the adjusting frame 205 by the rotating frame 204, the positioning shaft 203 is driven to rotate by the second motor 504 fixed at the bottom end of the positioning frame 501, the driving bevel gear 207 is driven to rotate by the positioning shaft 203, the tooth surface of the driving bevel gear 207 meshes with the tooth surface of the first positioning bevel gear 208, the first positioning bevel gear 208 drives the positioning disc 209 and the cleaning winding roller 210 to rotate, the cleaning winding roller 210 winds and collects the pulled materials, avoids the hidden trouble of material pulling connection in the product or the product gap, increases the practicability of the 3D printing head for FDM, and improves the accuracy of 3D printing.

[0027] Further, the print head control mechanism 1 comprises a print connecting frame 101, and a print control base 102 is fixedly arranged at the bottom end of the print connecting frame 101, a print output seat 103 is connected to the middle position of the bottom of the print control base 102, and a print output head 105 is in communication with the bottom end of the print output seat 103.

[0028] One end of the outer wall of the print output seat 103 is fixedly provided with a fixing frame 3, the top end of the fixing frame 3 is fixedly provided with an electric telescopic rod 4, the telescopic end of the electric telescopic rod 4 is fixedly connected with the top end of the positioning frame 501, and the inner wall of the positioning ring 201 is in penetration connection with one end of the outer wall of the print output seat 103.

[0029] The position of the cleaning protection mechanism 2 corresponds to the position of the limiting groove 104, and when protection and cleaning are not needed, the cleaning protection mechanism 2 is stably controlled in the inside of the limiting groove 104 through the electric telescopic rod 4.

[0030] Further, the first motor 502, the second motor 504 and the electric telescopic rod 4 are all intelligently controlled and electrically connected with the control end of the external FDM printer.

Claims

1. A 3D printing head for FDM, comprising a printing head control mechanism (1), the bottom end of the printing head control mechanism (1) is connected with a cleaning protection mechanism (2), and the top end of the cleaning protection mechanism (2) is connected with a driving control mechanism (5). characterized in that The cleaning protection mechanism (2) comprises a positioning ring (201), one end of the positioning ring (201) is fixedly provided with a lifting frame (202), one end of the top of the lifting frame (202) is rotatably provided with a rotating frame (204), the bottom end of the rotating frame (204) is fixedly provided with an adjusting frame (205), and both ends of the adjusting frame (205) are fixedly provided with positioning seats (206); one side of one of the positioning seats (206) is rotatably provided with a positioning disc (209), one end of the positioning disc (209) is fixedly provided with a cleaning winding roller (210), the positioning disc (209) is fixedly provided with a first positioning bevel gear (208) at one end penetrating through the positioning seat (206), the middle position of the other positioning seat (206) is rotatably provided with a connecting rod (212), one end of the connecting rod (212) is fixedly provided with a collecting cylinder (213), the bottom end of the collecting cylinder (213) is clamped with a protection seat (214), and the other end of the connecting rod (212) is fixedly provided with a second positioning bevel gear (211) penetrating through the positioning seat (206); and the middle position of the top of the adjusting frame (205) is rotatably provided with a driving bevel gear (207).

2. The 3D printing head for FDM according to claim 1, characterized in that: The driving control mechanism (5) comprises a positioning frame (501), one end of the top of the lifting frame (202) is rotatably provided with an adjusting gear (503), the top end of the rotating frame (204) is fixedly provided with an adjusting gear ring (505), the tooth surface of the adjusting gear (503) is meshed with the tooth surface of the adjusting gear ring (505), the middle position of the adjusting gear ring (505) is penetratingly provided with a positioning shaft (203), one end of the bottom of the positioning frame (501) is fixedly provided with a first motor (502), the output end of the first motor (502) is fixedly connected with the middle position of the adjusting gear (503), the other end of the bottom of the positioning frame (501) is fixedly provided with a second motor (504), and the output end of the second motor (504) is fixedly connected with the top end of the positioning shaft (203).

3. The 3D printing head for FDM according to claim 2, characterized in that: The bottom end of the positioning shaft (203) is fixedly connected with the middle position of the driving bevel gear (207).

4. The 3D printing head for FDM according to claim 2, characterized in that: The printing head control mechanism (1) comprises a printing connecting frame (101), the bottom end of the printing connecting frame (101) is fixedly provided with a printing control base (102), the middle position of the bottom of the printing control base (102) is connected with a printing output seat (103), the bottom end of the printing output seat (103) is communicated with a printing output head (105), and one end of the bottom of the printing control base (102) is provided with a limiting groove (104).

5. The 3D printing head for FDM according to claim 4, characterized in that: One end of the outer wall of the print output seat (103) is fixedly provided with a fixing frame (3), the top end of the fixing frame (3) is fixedly provided with an electric telescopic rod (4), the telescopic end of the electric telescopic rod (4) is fixedly connected with the top end of a positioning frame (501), and the inner wall of the positioning ring (201) is insertedly connected with one end of the outer wall of the print output seat (103).

6. The 3D printing head for FDM according to claim 4, characterized in that: The position of the cleaning protection mechanism (2) corresponds to the position of the limiting groove (104).

7. The 3D printing head for FDM according to claim 5, characterized in that: The first motor (502), the second motor (504) and the electric telescopic rod (4) are all electrically connected with the control end of the external FDM printer for intelligent control.

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