Hot runner nozzle convenient to disassemble and assemble

Abstract

The hot runner nozzle convenient to disassemble and assemble comprises an installation block and a spray head body, a quick disassembly mechanism is arranged between the spray head body and the installation block and comprises a first butt joint pipe and a second butt joint pipe, the first butt joint pipe is fixedly installed at the bottom of the installation block, and an internal thread is arranged on the inner end face of the second butt joint pipe. External threads are arranged on the outer end face of the nozzle body, the nozzle body is in threaded connection with the second butt-joint pipe, a hook is arranged on the second butt-joint pipe, a clamping ring is arranged on the first butt-joint pipe, and the first butt-joint pipe and the second butt-joint pipe are clamped in a matched mode through the hook and the clamping ring. According to the utility model, the quick dismounting mechanism is arranged between the nozzle main body and the mounting block, so that the nozzle main body and the mounting block can be conveniently and quickly dismounted, the replacement efficiency of the nozzle is greatly improved, and the injection molding processing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding equipment, in particular to a hot runner nozzle which is easy to disassemble and assemble. Background Art

[0002] Hot runner nozzle is one of the core components of hot runner system, mainly used in injection molds. Its main function is to continuously heat and keep the plastic melt warm during the entire injection process, ensuring that the melt can smoothly flow from the nozzle of the injection molding machine into the runner in the mold, and finally be injected into the cavity through the nozzle to form the desired product shape. Hot runner nozzles are usually made of high-quality high-temperature resistant alloy materials and have built-in electric heating elements to maintain the melt temperature.

[0003] Most of the existing hot runner nozzles are fixed on the hot runner plate of the mold by means of threaded connections or customized embedded structures. However, during the production process, due to changes in production raw materials, different types of nozzles need to be replaced to adapt to new injection molding processes or new material requirements. The threaded installation structure requires the use of external tools, and the installation and disassembly process is cumbersome, which affects the injection molding efficiency. Therefore, a hot runner nozzle that is easy to disassemble and assemble is needed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a hot runner nozzle which is easy to assemble and disassemble, and has the advantages of being easy to install and disassemble, thereby solving the problem that the hot runner nozzle in the prior art is not easy to assemble and disassemble.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hot runner nozzle that is easy to disassemble and assemble, comprising a mounting block and a nozzle body, wherein a quick-release mechanism is provided between the nozzle body and the mounting block;

[0006] The quick-release mechanism includes a first butt joint tube and a second butt joint tube, the first butt joint tube is fixedly mounted on the bottom of the mounting block, the inner end surface of the second butt joint tube is provided with an internal thread, the outer end surface of the nozzle body is provided with an external thread, the nozzle body is threadedly connected with the second butt joint tube, the second butt joint tube is provided with a hook, the first butt joint tube is provided with a clamping ring, and the first butt joint tube and the second butt joint tube are clamped together by the hook and the clamping ring.

[0007] As a preferred hot runner nozzle of the utility model that is easy to disassemble and assemble, the number of the hooks is four, a rotating shaft and a torsion spring are provided on the side of the hook, and the hook is rotatably connected to the second butt joint through the torsion spring.

[0008] As a preferred embodiment of the hot runner nozzle of the utility model which is easy to disassemble and assemble, the upper end surface and the lower end surface of the clamping ring are both inclined surface structures.

[0009] As a preferred hot runner nozzle of the utility model that is easy to disassemble and assemble, a fixing sleeve and a compression spring are provided at the outer end of the second butt joint pipe, and the fixing sleeve is elastically slidably connected to the nozzle body through the compression spring.

[0010] As a preferred embodiment of the hot runner nozzle of the utility model which is easy to disassemble and assemble, a limiting ring is provided at the bottom of the inner end surface of the fixing sleeve, and the limiting ring is slidably connected to the bottom inner end surface of the hook.

[0011] As a preferred embodiment of the hot runner nozzle of the utility model which is easy to disassemble and assemble, a sealing gasket is provided on the nozzle.

[0012] As a preferred embodiment of the hot runner nozzle of the utility model which is easy to disassemble and assemble, an anti-scalding pad is arranged on the outer end surface of the fixing sleeve.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model provides a quick-disassembly mechanism between the nozzle body and the mounting block, so as to facilitate and quickly disassemble and assemble the nozzle body and the mounting block. The quick-disassembly design enables the nozzle to be quickly replaced or cleaned during the shutdown of the injection molding machine, greatly reducing the downtime, improving the utilization rate and production efficiency of the equipment, and when the nozzle is clogged, worn or needs to be cleaned of residues, it can be quickly disassembled for maintenance, reducing the difficulty and time cost of maintenance.

[0015] 2. The utility model sets a fixing sleeve on the outer end of the quick-release mechanism to limit and fix the hook. The anti-fall-off design enhances the connection stability of the nozzle in the mold. It can maintain a reliable connection even in high-speed injection molding, frequent mold opening and closing, or long-term continuous production, reduces the risk of production interruption or mold damage caused by nozzle falling out, and further improves the stability of the spray installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is an exploded view of the utility model;

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

[0019] Figure 4 For the utility model Figure 3 Enlarged view of point A in the middle.

[0020] In the figure: 1. mounting block; 2. nozzle body; 201. sealing pad; 3. quick release mechanism; 304. compression spring; 310. first pair of pipes; 311. snap ring; 320. second pair of pipes; 321. hook; 322. rotating shaft; 323. torsion spring; 330. fixing sleeve; 331. limiting ring; 332. anti-scalding pad. DETAILED DESCRIPTION

[0021] See also Figure 1-Figure 4 , a hot runner nozzle that is easy to disassemble and assemble, comprising a mounting block 1 and a nozzle body 2, wherein a quick-release mechanism 3 is provided between the nozzle body 2 and the mounting block 1;

[0022] The quick-release mechanism 3 includes a first butt joint tube 310 and a second butt joint tube 320. The first butt joint tube 310 is fixedly installed at the bottom of the mounting block 1. The inner end surface of the second butt joint tube 320 is provided with an internal thread. The outer end surface of the nozzle body 2 is provided with an external thread. The nozzle body 2 is threadedly connected with the second butt joint tube 320. The second butt joint tube 320 is provided with a hook 321. The first butt joint tube 310 is provided with a snap ring 311. The first butt joint tube 310 and the second butt joint tube 320 are snap-connected by the hook 321 and the snap ring 311.

[0023] When the nozzle is in use, the first butt joint 310 is fixedly installed on the lower end of the mounting block 1, and the second butt joint 320 is fixedly installed on the upper end of the nozzle body 2. When the nozzle needs to be installed, the fixing sleeve 330 is slid downward, and then the nozzle body 2 is aligned with the second butt joint 320 and inserted into the second butt joint 320, so that the hook 321 is clamped on the upper end of the clamping ring 311, and then, the fixing sleeve 330 is pulled upward with force to make the first butt joint 310 and the second butt joint 320 fit firmly. When the nozzle needs to be disassembled, the fixing sleeve 330 is grasped and dragged downward with force to release the limit ring 331 from the limit of the hook 321, and at the same time, the hook 321 slips off the clamping ring 311 under the action of the pulling force, thereby removing the nozzle.

[0024] Furthermore, the number of the hooks 321 is four, and a rotating shaft 322 and a torsion spring 323 are provided on the side of the hook 321 . The hook 321 is rotationally connected to the second butt joint pipe 320 via the torsion spring 323 .

[0025] The hook 321 is automatically clamped on the clamping ring 311 under the action of the torsion spring 323, so that the first butt joint pipe 310 and the second butt joint pipe 320 are quickly connected and fixed.

[0026] Furthermore, the upper end surface and the lower end surface of the clamping ring 311 are both inclined structures.

[0027] When the second butt joint tube 320 cooperates with the first butt joint tube 310, the hook 321 can automatically open along the upper end surface or the lower end surface of the retaining ring 311, so as to facilitate quick plugging and unplugging. The inclined structure of the upper end surface generates an upward component force on the second butt joint tube 320 when the hook 321 is tightened, thereby improving the sealing performance of the first butt joint tube 310 and the second butt joint tube 320.

[0028] Furthermore, a fixing sleeve 330 and a compression spring 304 are provided at the outer end of the second butt joint pipe 320 , and the fixing sleeve 330 is elastically slidably connected to the nozzle body 2 via the compression spring 304 .

[0029] The fixing sleeve 330 is sleeved on the outer end of the hook 321 to prevent the hook 321 from expanding outwards during use.

[0030] Furthermore, a limiting ring 331 is disposed at the bottom of the inner end surface of the fixing sleeve 330 , and the limiting ring 331 is slidably connected to the bottom inner end surface of the hook 321 .

[0031] The limiting ring 331 is pressed against the bottom of the hook 321 to prevent the nozzle from falling off under the pressure of the internal raw materials, thereby improving the stability of the nozzle.

[0032] Furthermore, a sealing gasket 201 is provided on the nozzle.

[0033] The sealing gasket 201 is used to enhance the sealing performance between the nozzle body 2 and the first butt joint 310 to prevent leakage of raw materials.

[0034] Furthermore, an anti-scalding pad 332 is provided on the outer end surface of the fixing sleeve 330 .

[0035] The anti-scalding pad 332 is used to prevent the raw material temperature from being too high, which may cause scalding of fingers during the nozzle disassembly process.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hot runner nozzle that is easy to assemble and disassemble, comprising a mounting block (1) and a nozzle body (2), characterized in that: A quick-release mechanism (3) is provided between the nozzle body (2) and the mounting block (1); The quick-release mechanism (3) comprises a first butt joint tube (310) and a second butt joint tube (320); the first butt joint tube (310) is fixedly mounted on the bottom of the mounting block (1); the inner end surface of the second butt joint tube (320) is provided with an internal thread; the outer end surface of the nozzle body (2) is provided with an external thread; the nozzle body (2) is threadedly connected to the second butt joint tube (320); the second butt joint tube (320) is provided with a hook (321); the first butt joint tube (310) is provided with a clamping ring (311); the first butt joint tube (310) and the second butt joint tube (320) are clamped together by the hook (321) and the clamping ring (311).

2. The hot runner nozzle that is easy to assemble and disassemble according to claim 1, characterized in that: There are four hooks (321), and a rotating shaft (322) and a torsion spring (323) are provided on the side of the hook (321). The hook (321) is rotationally connected to the second butt joint pipe (320) via the torsion spring (323).

3. The hot runner nozzle that is easy to assemble and disassemble according to claim 2, characterized in that: The upper end surface and the lower end surface of the clamping ring (311) are both inclined surface structures.

4. The hot runner nozzle that is easy to assemble and disassemble according to claim 3, characterized in that: A fixing sleeve (330) and a compression spring (304) are provided at the outer end of the second butt joint pipe (320); the fixing sleeve (330) is elastically slidably connected to the spray head body (2) via the compression spring (304).

5. The hot runner nozzle that is easy to assemble and disassemble according to claim 4, characterized in that: A limiting ring (331) is provided at the bottom of the inner end surface of the fixing sleeve (330), and the limiting ring (331) is slidably connected to the inner end surface of the bottom of the hook (321).

6. The hot runner nozzle that is easy to assemble and disassemble according to claim 1, characterized in that: A sealing gasket (201) is provided on the nozzle.

7. The hot runner nozzle that is easy to assemble and disassemble according to claim 5, characterized in that: An anti-scalding pad (332) is provided on the outer end surface of the fixing sleeve (330).

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