3D printer capable of rapidly replacing spray head

Abstract

The utility model belongs to the technical field of 3D printers, and particularly relates to a 3D printer capable of quickly replacing a spray head, a mounting part is arranged on a sliding piece, a dismounting part is connected in the mounting part in a sliding manner, the lower surface of the dismounting part is fixedly connected with the spray head, the mounting part comprises a first pipe body, and the first pipe body is provided with a second pipe body; a clamping ball is slidably connected to the interior of the lower end of the first pipe body, a lantern ring is slidably connected to the outer wall of the first pipe body, a second spring is fixedly connected to the inner wall of the lantern ring, and one end of the second spring is fixedly connected to the outer wall of the first pipe body. According to the spray head, the lantern ring is pushed to enable the second spring to contract, then the dismounting part is pulled out of the first pipe body, a new dismounting part is pushed into the first pipe body, the dismounting part is pushed to a proper position, then the second spring is loosened to enable the second spring to rebound, and the lantern ring slides to an original position, so that the aim of quickly replacing the spray head is achieved; and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of 3D printers, and in particular relates to a 3D printer capable of quickly replacing a nozzle. Background Art

[0002] A 3D printer, also known as a three-dimensional printer, is a device that creates three-dimensional objects by adding materials layer by layer. It uses cumulative manufacturing technology, also known as rapid prototyping technology, based on digital model files, and uses special wax materials, powdered metals or plastics and other adhesive materials to print layers of adhesive materials to create three-dimensional objects. The nozzle of a 3D printer is one of the most frequently used components. After long-term use, it may become clogged or have other problems. Being able to quickly replace the nozzle can make maintenance more efficient, reduce machine downtime, and improve production efficiency. Different printing projects may require the use of different types of materials, and each material usually requires a specifically designed nozzle to handle it. Therefore, quickly replacing the nozzle allows users to flexibly switch between different projects.

[0003] In the prior art 3D printer, the installation method of the nozzle is relatively complicated. If the nozzle is blocked or the printing material is different and the nozzle needs to be replaced, the nozzle cannot be quickly replaced and disassembled, resulting in a long replacement time and low work efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a 3D printer with a quick replaceable nozzle. The nozzle can be removed by pulling the sleeve ring to drive the second spring to squeeze. When a new nozzle is installed, the second spring rebounds to clamp the beads on the outer periphery of the disassembly part to complete the installation, thereby saving replacement time and improving efficiency.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A 3D printer capable of quickly replacing a nozzle comprises a machine body, a sliding member for driving the nozzle to move is arranged on the machine body, a mounting portion is arranged on the sliding member, a disassembly portion is slidably connected inside the mounting portion, and the nozzle is fixedly connected to the lower surface of the disassembly portion, wherein:

[0007] The mounting portion includes a first tube body, a bead is slidably connected to the interior of the lower end of the first tube body, a ring is slidably connected to the outer wall of the first tube body, a second spring is fixedly connected to the inner wall of the ring, and one end of the second spring is fixedly connected to the outer wall of the first tube body.

[0008] In a preferred embodiment, the mounting portion further includes a first clamping ring, which is fixedly connected to the inner wall of the first tube body, the outer wall of the first clamping ring is fixedly connected to a first spring, the other end of the first spring is fixedly connected to a first joint, and the first joint is slidably disposed inside the first tube body.

[0009] In a preferred embodiment, the disassembly part includes a second tube body, the inner wall of the second tube body is fixedly connected to a second clamping ring, the outer wall of the second clamping ring is fixedly connected to a third spring, one end of the third spring is fixedly connected to a second joint, and the second joint is slidably arranged inside the second tube body.

[0010] In a preferred embodiment, a circle of evenly distributed holes is formed at the lower end of the first tube body, the diameter of the holes is slightly smaller than the diameter of the card bead, and the inner diameter of the lower end of the mounting portion is the same as the diameter of the upper end of the disassembly portion.

[0011] In a preferred solution, the outer wall of the second tube body is provided with a circle of grooves for accommodating beads.

[0012] In a preferred embodiment, the outer circumference of the first tube body has a circle of protrusions, one end of the second spring is fixed on the protrusions, a gap is formed between the collar and the first tube body, and the second spring is arranged in the gap.

[0013] In a preferred embodiment, one end of the first tube body and the inner end of the second tube body are both configured as inwardly conical outlets, which match the shapes of the first joint and the second joint.

[0014] The technical effects achieved by the utility model are:

[0015] The utility model discloses a 3D printer capable of quickly replacing a nozzle. The sleeve is pushed to shrink the second spring, and then the disassembly portion is pulled out of the first tube body. Then a new nozzle is installed, and the disassembly portion is pushed into the first tube body. Then the second spring is released to make the second spring rebound, so that the sleeve slides to the inner protruding portion to cover the hole on the first tube body, thereby achieving the effect of quickly replacing the nozzle and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of a sliding member of the utility model;

[0018] Figure 3 It is a partial structural cross-sectional view of the utility model;

[0019] Figure 4It is a schematic diagram of the installation part of the utility model;

[0020] Figure 5 It is a schematic diagram of the disassembly part of the utility model;

[0021] Figure 6 It is a schematic diagram of the second joint of the utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Machine body; 2. Sliding part; 3. Mounting part; 301. First tube body; 302. First retaining ring; 303. First joint; 304. First spring; 305. Bead; 306. Ring; 307. Second spring; 4. Disassembly part; 401. Second tube body; 402. Second retaining ring; 403. Second joint; 404. Third spring. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0027] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0028] like Figure 1 , Figure 2 and Figure 4 As shown, a 3D printer capable of quickly replacing a nozzle comprises a body 1, a sliding member 2 for driving the nozzle to move is arranged on the body 1, a mounting portion 3 is arranged on the sliding member 2, a disassembly portion 4 is slidably connected inside the mounting portion 3, and a nozzle is fixedly connected to the lower surface of the disassembly portion 4, wherein:

[0029] The mounting portion 3 includes a first tube body 301 , a bead 305 is slidably connected to the interior of the lower end of the first tube body 301 , a ring 306 is slidably connected to the outer wall of the first tube body 301 , a second spring 307 is fixedly connected to the inner wall of the ring 306 , and one end of the second spring 307 is fixedly connected to the outer wall of the first tube body 301 .

[0030] In the above embodiment, when the nozzle of the 3D printer needs to be replaced, the ring 306 is pushed upward to make the ring 306 slide on the outer wall of the first tube 301. During the sliding process, the second spring 307 contracts. When the ring 306 is pushed, the contact portion of the lower end of the ring 306 with the first tube 301 can move upward, so that the hole for storing the card bead 305 opened on the lower end of the first tube 301 is exposed, and then the disassembly part 4 is pulled. When the disassembly part 4 is pulled downward, the card bead 305 slides out of the groove on the outer periphery of the second tube 401, and then slides into the hole of the first tube 301, so that the disassembly part 4 can be pulled out of the first tube 301, and then a new disassembly part 4 with a nozzle is replaced, and the disassembly part 4 is pushed into the first tube 301. After the disassembly part 4 enters the first tube 301, the first joint 303 and the second joint 403, and then the first spring 304 and the third spring 404 are contracted by the pushing force, so that the first joint 303 and the second joint 403 are respectively retracted into the cavities of the first tube body 301 and the second tube body 401, until the outer wall of the top of the second tube body 401 fits with the inner wall of the first tube body 301, and the groove on the outer wall of the second tube body 401 is pushed to be flush with the position of the card bead 305, so that the card bead 305 can fall into the groove set on the outer periphery of the second tube body 401, and then the ring 306 is loosened to make the second spring 307 rebound, driving the ring 306 to slide outside the first tube body 301. When the ring 306 slides to the initial position, the part of the ring 306 that contacts the first tube body 301 can cover the hole on the first tube body 301, so as to prevent the card bead 305 from sliding out of the hole during printing, so as to achieve a better connection effect.

[0031] like Figure 4 As shown, the mounting portion 3 also includes a first clamping ring 302, which is fixedly connected to the inner wall of the first tube body 301, and the outer wall of the first clamping ring 302 is fixedly connected to a first spring 304, and the other end of the first spring 304 is fixedly connected to a first joint 303, and the first joint 303 is slidably arranged inside the first tube body 301.

[0032] In the above embodiment, the first spring 304 can be fixed inside the first tube body 301 by the first retaining ring 302 to achieve a positioning effect. The other end of the first spring 304 is fixed with the first joint 303. When the disassembly portion 4 enters into the first tube body 301, the first joint 303 moves upward under the pushing force, causing the first spring 304 to contract. Conversely, when the disassembly portion 4 is removed, the first spring 304 rebounds and causes the first joint 303 to slide to the initial position, wherein the interior of the first joint 303 is hollow, allowing the printing material to flow into the nozzle.

[0033] like Figure 5 and Figure 6 As shown, the disassembly portion 4 includes a second tube body 401, the inner wall of the second tube body 401 is fixedly connected to a second retaining ring 402, the outer wall of the second retaining ring 402 is fixedly connected to a third spring 404, one end of the third spring 404 is fixedly connected to a second joint 403, and the second joint 403 is slidably arranged inside the second tube body 401.

[0034] In the above embodiment, a second retaining ring 402 for fixing a third spring 404 is provided inside the second tube body 401, a second joint 403 is fixed to one end of the third spring 404, and the second joint 403 slides on the inner wall of the second tube body 401. When the disassembly portion 4 is installed into the mounting portion 3, the second joint 403 contacts the first joint 303. When the disassembly portion 4 moves into the mounting portion 3, the second joint 403 is forced to move downward, causing the third spring 404 to contract. When the disassembly portion 4 is removed, the third spring 404 rebounds, causing the second joint 403 to slide back to its initial position, wherein the interior of the second joint 403 is hollow, allowing the printing material to flow into the nozzle.

[0035] like Figure 3 - Figure 5 As shown, a circle of evenly distributed holes is formed at the lower end of the first tube body 301 , the diameter of the holes is slightly smaller than the diameter of the beads 305 , and the inner diameter of the lower end of the mounting portion 3 is the same as the diameter of the upper end of the disassembly portion 4 .

[0036] In the above embodiment, a circle of circular holes is opened at the lower end of the first tube body 301, and the circular holes are evenly distributed around the first tube body 301, and each hole has a card bead 305. The diameters of the holes at the inner wall and the outer wall of the first tube body 301 are slightly smaller than the diameter of the card bead 305 to prevent the card bead 305 from falling. The inner diameter of the lower end of the mounting part 3 is the same as the diameter of the upper end of the disassembly part 4, so that the disassembly part 4 can smoothly slide into the interior of the first tube body 301, which is convenient for installation and disassembly.

[0037] like Figure 5 As shown, the outer wall of the second tube body 401 is provided with a circle of grooves for accommodating the beads 305 .

[0038] In the above embodiment, the outer circumference of the second tube body 401 has a circle of grooves matching the card beads 305. When the disassembly part 4 is connected to the installation part 3, the card beads 305 can slide into the grooves on the outer circumference of the second tube body 401, making the connection more secure.

[0039] like Figure 4 As shown, the outer circumference of the first tube body 301 has a circle of protrusions, one end of the second spring 307 is fixed on the protrusions, a gap is formed between the ring 306 and the first tube body 301, and the second spring 307 is arranged in the gap.

[0040] In the above embodiment, the first tube body 301 has a circle of protrusions on its outer periphery, and the distance of the protrusions is the same as the width of the protrusions on the inner circle of the ring 306. The two ends of the second spring 307 are respectively fixed to the protrusions on the outer periphery of the first tube body 301 and the protrusions on the inner circle of the ring 306. A gap is formed between the ring 306 and the first tube body 301. The second spring 307 is in this gap. When replacing the nozzle, it pushes the ring 306 to slide on the outer wall of the first tube body 301, so that the second spring 307 is compressed. When the replacement is completed, the second spring 307 rebounds to make the ring 306 slide to the initial position.

[0041] like Figure 4 - Figure 5 As shown, one end of the first tube body 301 and the second tube body 401 is configured as an inwardly conical outlet, which matches the shape of the first joint 303 and the second joint 403 .

[0042] In the above embodiment, the shape of one end of the first tube body 301 and the second tube body 401 is an inwardly conical outlet, which matches the shape of the first joint 303 and the second joint 403, preventing the first joint 303 from slipping out of the first tube body 301 and preventing the second joint 403 from slipping out of the second tube body 401.

[0043] The working principle of the utility model is as follows: when the nozzle of the 3D printer needs to be replaced, the mounting part 3 is fixed with the sliding part 2, wherein the machine body 1 and the sliding part 2 are prior art and are not described in detail here, and the collar 306 is pushed upward to make the collar 306 slide on the outer wall of the first tube 301, and the second spring 307 is contracted during the sliding process, and when the collar 306 is pushed, the contact part of the lower end of the collar 306 with the first tube 301 can be moved upward, so that the lower end of the first tube 301 is The hole for storing the card bead 305 opened on the end is exposed, and then the disassembly part 4 is pulled. When the disassembly part 4 is pulled downward, the card bead 305 slides out of the groove on the outer periphery of the second tube body 401, and then slides into the hole of the first tube body 301, and then the disassembly part 4 can be pulled out of the first tube body 301, and then a new disassembly part 4 with a nozzle is replaced, and the disassembly part 4 is pushed into the first tube body 301. After the disassembly part 4 enters the first tube body 301, the first joint 303 contacts the second joint 403, and Then, the first spring 304 and the third spring 404 are contracted by the pushing force, so that the first joint 303 and the second joint 403 are retracted into the cavities of the first tube body 301 and the second tube body 401 respectively, until the outer wall of the top of the second tube body 401 fits with the inner wall of the first tube body 301, and the groove on the outer wall of the second tube body 401 is pushed to be flush with the position of the card bead 305, so that the card bead 305 can fall into the groove set on the outer periphery of the second tube body 401, and then the ring 306 is loosened to make The second spring 307 rebounds, driving the ring 306 to slide outside the first tube body 301. When the ring 306 slides to the initial position, the contact portion of the inside of the ring 306 with the first tube body 301 can cover the hole on the first tube body 301, preventing the card bead 305 from sliding out of the hole during printing, so that the connection effect is better, thereby achieving the purpose of quickly replacing the nozzle, wherein the first joint 303 and the second joint 403 are both hollow inside, so that the printing material can flow into the nozzle for printing.

[0044] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A 3D printer capable of quickly replacing a nozzle, comprising a body (1), wherein the body (1) is provided with a sliding member (2) for driving the nozzle to move, wherein: The sliding member (2) is provided with a mounting portion (3), the interior of the mounting portion (3) is slidably connected to a disassembly portion (4), and the lower surface of the disassembly portion (4) is fixedly connected to a nozzle, wherein: The mounting portion (3) comprises a first tube body (301), the lower end of the first tube body (301) is slidably connected to a bead (305) inside, the outer wall of the first tube body (301) is slidably connected to a ring (306), the inner wall of the ring (306) is fixedly connected to a second spring (307), and one end of the second spring (307) is fixedly connected to the outer wall of the first tube body (301).

2. A 3D printer with a quick-change nozzle according to claim 1, characterized in that: The mounting portion (3) further comprises a first snap ring (302), wherein the first snap ring (302) is fixedly connected to the inner wall of the first tube body (301), the outer wall of the first snap ring (302) is fixedly connected to a first spring (304), the other end of the first spring (304) is fixedly connected to a first joint (303), and the first joint (303) is slidably arranged inside the first tube body (301).

3. A 3D printer with a quick-change nozzle according to claim 2, characterized in that: The disassembly portion (4) comprises a second tube body (401), the inner wall of the second tube body (401) is fixedly connected to a second clamping ring (402), the outer wall of the second clamping ring (402) is fixedly connected to a third spring (404), one end of the third spring (404) is fixedly connected to a second joint (403), and the second joint (403) is slidably arranged inside the second tube body (401).

4. A 3D printer with a quick-change nozzle according to claim 1, characterized in that: A circle of evenly distributed holes is formed at the lower end of the first tube body (301), the diameter of the holes being slightly smaller than the diameter of the clamping bead (305), and the inner diameter of the lower end of the mounting portion (3) is the same as the diameter of the upper end of the disassembly portion (4).

5. A 3D printer with a quick-change nozzle according to claim 3, characterized in that: The outer wall of the second tube (401) is provided with a circle of grooves for accommodating the beads (305).

6. A 3D printer with a quick-change nozzle according to claim 2, characterized in that: The first tube body (301) has a circle of protrusions on its outer circumference, one end of the second spring (307) is fixed on the protrusions, a gap is formed between the collar (306) and the first tube body (301), and the second spring (307) is arranged in the gap.

7. A 3D printer with a quick-change nozzle according to claim 3, characterized in that: One end of the first tube body (301) and the second tube body (401) is arranged as an inwardly conical outlet, matching the shape of the first joint (303) and the second joint (403).

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