CN206983282U - A kind of 3D printer nozzle easy to assemble - Google Patents

Abstract

It the utility model is related to a kind of 3D printer nozzle easy to assemble, belong to 3D printer part field, nozzle carrier, connector, adapter sleeve, heater and spraying material head including being sequentially connected simultaneously component material transfer passage, connector is connected on nozzle carrier, heater is connected to the wire rod between adapter sleeve and spraying material head and heating and melting material conveying passage exit, and connector is connected with adapter sleeve clamping.Increase can be convenient to fast replacing structure on nozzle carrier, can be by the overall quick dismounting and change of heater, to have saved replacing construction when nozzle breaks down.Heater and shower nozzle are connected as a single entity by the structure, can be convenient to the integral demounting of heater and shower nozzle, and so as to ensure that the wire rod for 3D printing can be extracted out at heater when dismantling, when preventing from dismantling, wire rod continues to melt causes second accident to 3D printing shower nozzle.

Description

A detachable 3D printer nozzle

technical field

The utility model relates to an easy-to-disassemble 3D printer nozzle, which belongs to the field of 3D printer parts.

Background technique

3D printing technology is a type of rapid prototyping manufacturing technology that has developed rapidly in recent years. The most widely used in the field of 3D printing technology is called fusion deposition molding, that is, FDM method, which mainly transports thermoplastic polymer wires to high-temperature printing heads, melts the wires and continuously extrudes molten polymers, and precisely Under the positioning, three shapes are constructed by stacking layer by layer. In the 3D printing process, impurities are often mixed in the production or feeding process to cause nozzle blockage, or when printing high-hardness materials such as carbon fiber materials, the nozzle is worn by high-hardness particles in the material, and the printer needs to replace the nozzle frequently. Most of the existing nozzles are connected to the heating block by threads, and they are usually operated in a high-temperature environment during printing, which also increases the difficulty of replacement. At the same time, since the nozzle is generally made of copper, this process can easily cause the thread of the nozzle to break. Therefore, how to improve the speed and convenience of replacing the nozzle is a problem that needs to be solved in FDM printing.

Utility model content

The purpose of this utility model is to provide an easy-to-disassemble 3D printer nozzle for the above-mentioned problems, adding a structure on the nozzle seat that can facilitate quick replacement. When the nozzle fails, the heater can be quickly disassembled and replaced as a whole. To save replacement time.

The technical scheme that the utility model adopts is as follows:

The utility model discloses an easy-to-disassemble 3D printer nozzle, which comprises a nozzle seat, a connecting head, a connecting sleeve, a heater and a material spraying head which are sequentially connected to form a material conveying channel. The connecting head is connected to the nozzle seat, and the heater is connected to the The wire rod at the outlet of the material conveying channel is heated and melted between the connecting sleeve and the spraying head, and the connecting head and the connecting sleeve are clamped and connected.

In this structure, the connection head and the connection sleeve are clamped to facilitate the disassembly of the nozzle part. At the same time, this structure connects the heater and the nozzle as a whole, which can facilitate the overall disassembly of the heater and the nozzle, thereby ensuring , the wire used for 3D printing can be pulled out from the heater to prevent the wire from continuing to melt during disassembly and cause secondary accidents to the 3D printing nozzle, and the wire can be pulled out from the heating chamber at the nozzle to prevent the wire from being pulled off and requiring In the case of continuous connection, the method of clamping the connector head and the connector sleeve not only ensures the realization of the characteristics of quick replacement.

Further, the connecting head has a locking groove, and the connecting sleeve includes a connecting pipe body, a locking ball and a sleeve. The sleeve is placed outside the connecting pipe body and can move along the axis of the connecting pipe body. The through hole, the locking ball is placed in the through hole and is supported by the sleeve so that the locking ball exceeds the inner wall of the connecting pipe body to snap into the locking groove. The inner wall of the sleeve is provided with a release slot, which moves to the When the hole is in place, the locking ball can retreat to the unlocking slot so that the locking ball can be released from the locking slot.

This structure realizes the clamping connection between the connector head and the connector sleeve by controlling the insertion and withdrawal of the locking ball in the locking groove, thereby ensuring the stability of the clamping connection and avoiding the influence of the vibration during the 3D printing process on the clamping connection When the structure is in the clamping state, the connecting head and the connecting sleeve can rotate relatively, and at the same time, the connecting pipe body and the sleeve can rotate relatively, thereby avoiding the problem of radial positioning during the clamping process.

Furthermore, the unlocking groove has a certain depth so that when the locking ball retreats into the unlocking groove, the locking ball does not fall out from the through hole, and at the same time, the locking ball completely exits the locking groove.

Further, the cross section of the unlocking groove is trapezoidal, the cross section of the locking groove is tapered, and the side wall of the through hole has an arc surface matching the locking ball; 5-8 through holes are evenly distributed on the connecting pipe body, Locking balls are respectively arranged in each through hole. The trapezoidal unclamping groove can facilitate the positioning of the locking ball, and the cross section of the locking groove is set to be tapered, so that when the locking ball is clamped, the locking ball is in contact with the slope of the locking groove, and has a certain movable distance. And reduce the requirements of the manufacturing and design accuracy of each part of the connecting sleeve.

Further, a return spring is provided between the sleeve and the connecting pipe body, and the return spring is compressed along the axial direction of the connecting pipe body so that the locking ball retreats to the release groove. The return spring is adopted to facilitate the unclamping and clamping between the connector head and the connector sleeve.

Further, a limit protrusion is provided on the side of the card release groove close to the return spring, and there is a locking section between the card release groove and the limit protrusion to allow the locking ball to snap into the lock groove, and the limit protrusion cooperates with the lock ball to limit the tube. The position where the sleeve moves along the connecting pipe body.

Further, the connecting head is tubular and has a threaded portion and a connecting portion, the connecting head is threadedly connected to the nozzle seat through the threaded portion, the locking groove is located on the connecting portion, and the side away from the threaded portion is provided with a convex ring portion and a tapered portion in sequence , The tapered part, the convex ring part and the locking groove are coaxial.

Further, the heater is threadedly connected to the connecting sleeve and the spraying head respectively, and the connecting head is threadedly connected to the nozzle seat; the connecting head has a locking groove, the connecting sleeve is tubular, and the inner wall of the connecting sleeve has a lock that can move along its radial direction. The ball, the locking ball can be snapped into the locking groove so that the connector head and the connector sleeve snap together.

Further, the connecting sleeve includes a connecting pipe body, a locking ball and a sleeve. The sleeve is placed outside the connecting pipe body and can move along the axis of the connecting pipe body. A through hole is provided on the side wall of the connecting pipe body, and the locking ball is placed in the through hole. It can be supported by the pipe sleeve so that the locking ball protrudes from the inner side wall along the radial direction of the connecting pipe body. The inner wall of the pipe sleeve is provided with a card release groove, which can move with the pipe sleeve and allow the locking ball to be retracted. Insert it into the card release slot to be stored along the radial direction of the connecting pipe body.

Further, the connecting head is tubular and has a threaded portion and a connecting portion, the connecting head is threadedly connected to the nozzle seat through the threaded portion, and the connecting portion is provided with a coaxial locking groove, a convex ring portion and a cone in sequence in a direction facing away from the threaded portion. State Department.

In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

1. The heating block and the nozzle are used as a module, and an easy-to-replace spray head is installed. When the nozzle is blocked or other faults need to be replaced, the replacement can be realized through the connecting sleeve and the connecting head. It is only necessary to push the sleeve and pull out the nozzle replacement head It can be realized, the installation process is opposite to the replacement process, the replacement speed is fast and the replacement is convenient;

2. By controlling the insertion and withdrawal of the locking ball in the locking groove, the clamping connection between the connector head and the connector sleeve is realized, thereby ensuring the stability of the clamping connection and avoiding the influence of vibration during the 3D printing process on the clamping connection When the structure is in the clamping state, the connecting head and the connecting sleeve can rotate relatively, and at the same time, the connecting pipe body and the sleeve can rotate relatively, thereby avoiding the problem of radial positioning during the clamping process.

Description of drawings

Figure 1 is an assembly structure diagram of the easy-to-disassemble 3D printer nozzle;

Figure 2 is an enlarged view of the connecting head and the connecting sleeve of the easy-to-disassemble 3D printer nozzle;

Figure 3 is a disassembled view of the easy-to-disassemble 3D printer nozzle (nozzle seat, connector part);

Figure 4 is a disassembled view of the easy-to-disassemble 3D printer nozzle (connection sleeve, heater, and nozzle part).

Marks in the figure: 1-nozzle seat, 2-connector, 21-threaded part, 22-connecting part, 23-locking groove, 24-protruding ring part, 25-tapered part, 3-connecting sleeve, 31-unlocking Groove, 32-locking ball, 33-limiting protrusion, 34-return spring, 35-pipe sleeve, 36-connecting pipe body, 4-heater, 5-spray head.

detailed description

As shown in Figures 1, 2, 3, and 4, a detachable 3D printer nozzle of the present invention includes sequentially connecting a nozzle seat 1, a connecting head 2, a connecting sleeve 3, a heater 4 and a spraying head 5. There are multiple sections of the material conveying channel in the nozzle seat 1, the connecting head 2, the connecting sleeve 3, the heater 4 and the spraying head 5, and these sections are jointly formed or spliced into a material conveying channel.

The connecting head 2 is tubular and has a threaded portion 21 and a connecting portion 22. The connecting head 2 is threadedly connected to the nozzle holder 1 through the threaded portion 21. The connecting portion 22 is provided with a coaxial locking groove 23, The collar portion 24 and the tapered portion 25 . The connecting head 2 is tubular and has a threaded part 21 and a connecting part 22. The connecting head 2 is threaded to the nozzle seat 1 through the threaded part 21. The locking groove 23 is located on the connecting part 22 and the side away from the threaded part 21 is provided with a protruding ring in turn. The portion 24 and the tapered portion 25, the tapered portion 25, the protruding ring portion 24, and the locking groove 23 are all coaxial.

The connecting sleeve 3 includes a connecting pipe body 36, a locking ball 32 and a pipe sleeve 35. The pipe sleeve 35 is placed outside the connecting pipe body 36 and can move along the axis of the connecting pipe body 36. The side wall of the connecting pipe body 36 is provided with a through hole. The locking ball 32 is placed in the through hole and can be resisted by the pipe sleeve 35 so that the locking ball 32 stretches out its inner side wall along the radial direction of the connecting pipe body 36 to snap into the locking groove 23, and the inner side wall of the pipe sleeve 35 is provided with a release The locking groove 31 and the unlocking groove 31 can be moved to the through hole with the sleeve 35 and the locking ball 32 can retreat into the unlocking groove 31 to receive and unlock the locking groove 23 along the radial direction of the connecting tube body 36 . The unclamping groove 31 has a certain depth so that when the locking ball 32 retreats to the unclamping groove 31 , the locking ball 32 does not fall out from the through hole, and at the same time the locking ball 32 completely exits the locking groove 23 . The cross section of the unclamping groove 31 is trapezoidal, the cross section of the locking groove 23 is conical, and the side wall of the through hole has an arc surface matching the locking ball 32; 5-8 through holes are evenly distributed on the connecting pipe body 36, Locking balls 32 are respectively arranged in each through hole.

A return spring 34 is also provided between the sleeve 35 and the connecting pipe body 36 , and the returning spring 34 is compressed along the axial direction of the connecting pipe body 36 so that the locking ball retreats to the unclamping groove 31 . A limit protrusion 33 is provided on the side of the release groove 31 close to the return spring 34, and there is a locking section between the release groove 31 and the limit protrusion 33 to make the locking ball 32 snap into the lock groove 23, and the limit protrusion 33 Cooperate with the locking ball 32 to limit the moving position of the sleeve 35 along the connecting tube body 36 .

The heater 4 is threadedly connected with the connection sleeve 3 and the spray head 5 respectively, and the connection head 2 is threaded with the nozzle seat 1; the connection head 2 has a locking groove 23, the connection sleeve 3 is tubular, and the inner wall of the connection sleeve 3 has a The locking ball 32 moves along its radial direction, and the locking ball 32 can be locked into the locking groove 23 so that the connecting head 2 and the connecting sleeve 3 are locked together. The heater adopts an electric heater, and the connecting pipe body can be made of heat insulating material.

Claims (10)

1. A 3D printer nozzle that is easy to disassemble is characterized in that it includes a nozzle seat, a connector, a connector sleeve, a heater and a material spraying head that are sequentially connected and form a material delivery channel, the connector is connected to the nozzle seat, and the heater It is connected between the connection sleeve and the spray head and heats and melts the wire at the outlet of the material conveying channel, and the connection head and the connection sleeve are clamped and connected. 2. The easy-to-install 3D printer nozzle according to claim 1, wherein the connecting head has a locking groove, and the connecting sleeve includes a connecting tube body, a locking ball and a tube sleeve, and the tube sleeve is placed outside the connecting tube body And it can move along the axis of the connecting pipe body. There is a through hole on the side wall of the connecting pipe body. The locking ball is placed in the through hole and is supported by the sleeve so that the locking ball exceeds the inner side wall of the connecting pipe body to snap into the locking groove. The inner side wall of the pipe sleeve is provided with a card releasing groove, and when the card releasing groove moves to the through hole, the locking ball can retreat to the card releasing groove so that the locking ball can be released from the locking groove. 3. The easy-to-install 3D printer nozzle as claimed in claim 2, characterized in that the release groove has a certain depth so that when the locking ball retreats to the release groove, the locking ball does not fall out from the through hole, and at the same time the locking ball completely withdraws Lock slot. 4. The easily disassembled 3D printer nozzle according to claim 2, characterized in that, the cross-section of the unblocking groove is trapezoidal, the cross-section of the locking groove is tapered, and the side wall of the through hole has a locking ball. Arc surface; 5-8 through holes are evenly distributed on the connecting pipe body, and locking balls are respectively arranged in each through hole. 5. The easy-to-install 3D printer nozzle as claimed in claim 2, characterized in that, a return spring is arranged between the sleeve and the connecting pipe body, and the returning spring is compressed along the axial direction of the connecting pipe body so that the locking ball is retracted. to the release slot. 6. The easily detachable 3D printer nozzle as claimed in claim 5, characterized in that, a limiting protrusion is provided on the side of the card releasing groove close to the return spring, and there is a locking ball between the card releasing groove and the limiting protrusion. The locking section snaps into the locking groove, and the limiting protrusion cooperates with the locking ball to limit the position of the sleeve moving along the connecting pipe body. 7. The easy-to-install 3D printer nozzle according to claim 2, wherein the connecting head is tubular and has a threaded part and a connecting part, the connecting head is threadedly connected to the nozzle seat through the threaded part, and the locking groove is located on the connecting part And the side away from the threaded part is provided with a convex ring part and a tapered part in sequence, and the tapered part, the convex ring part and the locking groove are coaxial. 8. The easy-to-install 3D printer nozzle as claimed in claim 1, wherein the heater is threadedly connected to the connecting sleeve and the spray head respectively, and the connecting head is threadedly connected to the nozzle seat; the connecting head has a locking groove, and the connecting sleeve It is tubular, and the inner wall of the connecting sleeve has a locking ball that can move along its radial direction, and the locking ball can be snapped into the locking groove to make the connecting head and the connecting sleeve clamped. 9. The easy-to-install 3D printer nozzle according to claim 1, wherein the connecting sleeve includes a connecting tube body, a locking ball and a sleeve, and the sleeve is set outside the connecting tube body and can move along the axis of the connecting tube body , the side wall of the connecting pipe body is provided with a through hole, the locking ball is placed in the through hole and can be held by the sleeve so that the locking ball protrudes from the inner side wall along the radial direction of the connecting pipe body, and the inner wall of the sleeve is provided with The card-releasing slot can move with the sleeve and allow the locking ball to retreat into the card-releasing slot to be accommodated along the radial direction of the connecting pipe body. 10. The easy-to-install 3D printer nozzle according to claim 2, wherein the connecting head is tubular and has a threaded portion and a connecting portion, the connecting head is threaded to the nozzle seat through the threaded portion, and the connecting portion faces away from the thread The direction of the part is provided with a coaxial locking groove, a convex ring part and a tapered part in sequence.