High-strength PFA (Polyfluoroalkoxy) nozzle

Abstract

The utility model relates to the technical field of injection molding machines, and discloses a high-strength PFA nozzle which comprises a threaded mounting pipe, the lower part of the threaded mounting pipe is fixedly connected with a first connecting pipe, and the lower part of the first connecting pipe is in threaded connection with a second connecting pipe. The sleeving ring is downwards extruded through the third connecting pipe to enable the spring to generate compression deformation, in the long-term use process, when the filter box needs to be cleaned, the first connecting pipe is screwed off from the top of the second connecting pipe, and the spring gradually recovers deformation in the process of screwing off the first connecting pipe, so that the filter box is cleaned. And a sleeving ring and a third connecting pipe are pushed to move upwards from the interior of the second connecting pipe, so that the top of the filter box is higher than the top of the second connecting pipe, and the filter box is conveniently taken out from the interior of the second connecting pipe to be cleaned.

Description

Technical Field

[0001] The utility model application relates to the technical field of injection molding machines, in particular to a high-strength PFA injection nozzle. Background Art

[0002] The injection nozzle is an important component used in injection molding machines, which is used to inject molten plastic into the mold cavity and form the desired product shape.

[0003] For example, publication number: CN219028279U discloses "an injection molding machine nozzle", which includes a nozzle cap, an ejector pin, a nozzle middle section, a spring pressure rod, a pressure spring and a nozzle body, wherein the nozzle cap and the nozzle body are threadedly connected at both ends of the nozzle middle section, the nozzle body is connected to a screw material tube through a thread, a glue injection hole is provided at the end of the nozzle cap, a spring pressure rod mounting groove is radially provided in the middle of the nozzle middle section, a spring pressure rod is inserted in the spring pressure rod mounting groove, a pressure spring that resists the spring pressure rod is sleeved on the nozzle body, an ejector pin mounting inner hole that is communicated with the spring pressure rod mounting groove is axially provided at the front end of the nozzle middle section, and an ejector pin that can block the glue injection hole is installed in the ejector pin mounting inner hole; a plurality of plastic through holes are symmetrically arranged axially away from the center position of the nozzle middle section.

[0004] However, in the prior art, after the high-strength PFA nozzle is installed and fixed to the injection molding machine, the impurities filtered inside and the larger plastic particles will clog the nozzle during long-term use, causing poor and uneven discharge, affecting the production efficiency and quality of the injection molded parts. Traditional high-strength PFA nozzles mostly adopt an integrated structure, which is difficult to disassemble and clean the internal blockage. Summary of the invention

[0005] In order to solve the problem that after the high-strength PFA nozzle is installed and fixed to the injection molding machine, the impurities filtered inside and the larger plastic particles will clog the nozzle during long-term use, causing poor and uneven material discharge, affecting the production efficiency and production quality of injection molded parts, traditional high-strength PFA nozzles mostly adopt an integrated structure, which is difficult to disassemble and clean the internal blockage. The utility model provides a high-strength PFA nozzle to solve the above problem.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high-strength PFA nozzle comprises a threaded mounting tube, wherein a No. 1 connecting tube is fixedly connected to the lower portion of the threaded mounting tube, a No. 2 connecting tube is threadedly connected to the lower portion of the No. 1 connecting tube, a nozzle head is fixedly connected to the lower portion of the No. 2 connecting tube, a No. 2 fixing ring is fixedly connected to the upper portion of the nozzle head, a limiting plug rod is fixedly connected to the upper portion of the No. 2 fixing ring, a No. 3 connecting tube is plugged into the upper portion of the limiting plug rod, a spring is provided on the surface of the limiting plug rod, one end of the spring is fixedly connected to the No. 2 fixing ring, and the other end of the spring is fixedly connected to a sleeve ring, the sleeve ring is slidably connected to the limiting plug rod, and the top of the sleeve ring is fitted with the bottom of the No. 3 connecting tube, and a filter box is fixedly connected to the inside of the No. 3 connecting tube.

[0008] Furthermore, a connecting plate is fixedly connected to the side surface of the No. 1 connecting pipe, and a slot is provided on the upper portion of the connecting plate.

[0009] Furthermore, an insert plate is inserted into the slot, and a sealing gasket is fixedly connected to the upper part of the insert plate.

[0010] Furthermore, a plurality of filter holes are arranged on the surface of the filter box, and the plurality of filter holes are evenly distributed on the surface of the filter box.

[0011] Furthermore, a No. 1 fixing ring is fixedly connected inside the No. 1 connecting pipe, and the bottom of the No. 1 fixing ring fits with the top of the No. 3 connecting pipe.

[0012] Furthermore, a nozzle is arranged inside the No. 3 connecting pipe, and the limiting plug rod is located inside the limiting plug hole and plugged into the No. 3 connecting pipe.

[0013] Furthermore, a mounting nut is fixedly connected to the outside of the second connecting pipe.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In the utility model, the No. 1 connecting tube is threadedly connected with the No. 2 connecting tube. At this time, the No. 1 fixing ring inside the No. 1 connecting tube squeezes and pushes the top of the No. 3 connecting tube. As the No. 1 connecting tube rotates along the thread of the No. 2 connecting tube, the No. 1 fixing ring will gradually move downward. At this time, the No. 3 connecting tube will squeeze the sleeve ring downward to compress the spring. During long-term use, when the filter box needs to be cleaned, the No. 1 connecting tube is unscrewed from the top of the No. 2 connecting tube. In the process of unscrewing the No. 1 connecting tube, the spring gradually recovers its deformation, pushing the sleeve ring and the No. 3 connecting tube to move upward from the inside of the No. 2 connecting tube, so that the top of the filter box is higher than the top of the No. 2 connecting tube, which is convenient for taking the filter box out of the No. 2 connecting tube for cleaning.

[0016] 2. In the utility model, when the whole is installed, the plug plate is plugged into the slot, so that the sealing gasket can be accurately installed on the upper part of the connecting plate. In the process of threaded connection between the threaded installation pipe and the injection molding machine, the sealing gasket can improve the sealing of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A three-dimensional structural schematic diagram of a high-strength PFA nozzle is proposed for the utility model;

[0019] Figure 2 The utility model provides a front view structural schematic diagram of a high-strength PFA nozzle;

[0020] Figure 3 The utility model provides a cross-sectional three-dimensional structure diagram of a No. 2 connecting pipe in a high-strength PFA nozzle;

[0021] Figure 4 The utility model provides a cross-sectional three-dimensional structural schematic diagram of a No. 3 connecting pipe in a high-strength PFA nozzle.

[0022] The meanings of the reference numerals in the figure are as follows: 1. threaded mounting tube; 2. No. 1 connecting tube; 3. connecting plate; 4. plug-in plate; 5. slot; 6. sealing gasket; 7. No. 1 fixing ring; 8. No. 2 connecting tube; 9. mounting nut; 10. No. 2 fixing ring; 11. limiting plug rod; 12. spring; 13. sleeve ring; 14. No. 3 connecting tube; 15. filter box; 16. limiting plug hole; 17. nozzle head. DETAILED DESCRIPTION

[0023] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] Reference Figure 1-Figure 4A high-strength PFA nozzle comprises a threaded mounting tube 1, a No. 1 connecting tube 2 is fixedly connected to the lower part of the threaded mounting tube 1, a No. 2 connecting tube 8 is threadedly connected to the lower part of the No. 1 connecting tube 2, a nozzle head 17 is fixedly connected to the lower part of the No. 2 connecting tube 8, a No. 2 fixing ring 10 is fixedly connected to the upper part of the nozzle head 17, a limited position plug rod 11 is fixedly connected to the upper part of the No. 2 fixing ring 10, a No. 3 connecting tube 14 is plugged into the upper part of the limited position plug rod 11, a spring 12 is arranged on the surface of the limited position plug rod 11, one end of the spring 12 is fixedly connected to the No. 2 fixing ring 10, and the other end of the spring 12 is fixedly connected to the No. 2 fixing ring 10. A sleeve ring 13 is connected, the sleeve ring 13 is slidably connected to the limit plug rod 11, and the top of the sleeve ring 13 fits with the bottom of the No. 3 connecting pipe 14, a filter box 15 is fixedly connected inside the No. 3 connecting pipe 14, and a plurality of filter holes are arranged on the surface of the filter box 15, and the plurality of filter holes are evenly distributed on the surface of the filter box 15, a No. 1 fixing ring 7 is fixedly connected inside the No. 1 connecting pipe 2, and the bottom of the No. 1 fixing ring 7 fits with the top of the No. 3 connecting pipe 14, a nozzle head 17 is arranged inside the No. 3 connecting pipe 14, and the limit plug rod 11 is located inside the limit plug hole 16 and is plugged into the No. 3 connecting pipe 14.

[0025] Specifically, the No. 3 connecting tube 14 is plugged into the limiting plug rod 11 to position and install the No. 3 connecting tube 14, so that the filter box 15 is installed and fixed. At this time, the bottom of the No. 3 connecting tube 14 fits with the upper part of the sleeve ring 13, and the No. 1 connecting tube 2 is threadedly connected with the No. 2 connecting tube 8. The No. 1 fixing ring 7 inside the No. 1 connecting tube 2 squeezes and pushes the top of the No. 3 connecting tube 14. As the No. 1 connecting tube 2 rotates along the thread of the No. 2 connecting tube 8, the No. 1 fixing ring 7 will gradually move downward. At this time, the No. 3 connecting tube 14 is threadedly connected with the No. 2 connecting tube 8. The connecting tube 14 will squeeze the sleeve ring 13 downward to cause the spring 12 to be compressed and deformed. During long-term use, when the filter box 15 needs to be cleaned, the No. 1 connecting tube 2 is unscrewed from the top of the No. 2 connecting tube 8. In the process of unscrewing the No. 1 connecting tube 2, the spring 12 gradually recovers its deformation, pushing the sleeve ring 13 and the No. 3 connecting tube 14 to move upward from the inside of the No. 2 connecting tube 8, so that the top of the filter box 15 is higher than the top of the No. 2 connecting tube 8, which is convenient for taking out the filter box 15 from the inside of the No. 2 connecting tube 8 for cleaning.

[0026] As an optimization solution, Figure 1 and Figure 3 As shown, a connecting plate 3 is fixedly connected to the side of the No. 1 connecting pipe 2, a slot 5 is arranged on the top of the connecting plate 3, a plug-in plate 4 is inserted inside the slot 5, and a sealing gasket 6 is fixedly connected to the top of the plug-in plate 4. A mounting nut 9 is fixedly connected to the outside of the No. 2 connecting pipe 8.

[0027] Specifically, when installing the whole, the plug plate 4 is plugged into the slot 5, so that the sealing gasket 6 can be accurately installed on the upper part of the connecting plate 3. During the threaded connection between the threaded mounting tube 1 and the injection molding machine, a wrench is used to tighten the mounting nut 9 to facilitate the installation and fixation of the whole, and the sealing of the connection is improved by the sealing gasket 6.

[0028] Working principle: by plugging the No. 3 connecting tube 14 with the limiting plug rod 11, the No. 3 connecting tube 14 is positioned and installed, so that the filter box 15 is installed and fixed. At this time, the bottom of the No. 3 connecting tube 14 fits with the upper part of the sleeve ring 13, and the No. 1 connecting tube 2 is threadedly connected with the No. 2 connecting tube 8. The top of the No. 3 connecting tube 14 is squeezed and pushed by the No. 1 fixing ring 7 inside the No. 1 connecting tube 2. As the No. 1 connecting tube 2 rotates along the thread of the No. 2 connecting tube 8, the No. 1 fixing ring 7 will gradually move downward. At this time, the No. 3 connecting tube 14 will squeeze the sleeve ring 13 downward to cause the spring 12 to produce compression deformation. During long-term use, when the filter box 15 needs to be cleaned, the No. 1 connecting tube 2 is unscrewed from the top of the No. 2 connecting tube 8. In the process of unscrewing the No. 1 connecting tube 2, the spring 12 gradually recovers its deformation, pushing the sleeve ring 13 and the No. 3 connecting tube 14 to move upward from the inside of the No. 2 connecting tube 8, so that the top of the filter box 15 is higher than the top of the No. 2 connecting tube 8.

[0029] When the whole is installed, the plug plate 4 is plugged into the slot 5, so that the sealing gasket 6 can be accurately installed on the upper part of the connecting plate 3. In the process of threaded connection between the threaded installation tube 1 and the injection molding machine, the sealing gasket 6 is used to improve the sealing of the connection.

[0030] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0031] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A high-strength PFA nozzle, characterized in that: The invention comprises a threaded installation tube (1), wherein the lower part of the threaded installation tube (1) is fixedly connected to a first connection tube (2), the lower part of the first connection tube (2) is threadedly connected to a second connection tube (8), the lower part of the second connection tube (8) is fixedly connected to a nozzle head (17), the upper part of the nozzle head (17) is fixedly connected to a second fixing ring (10), the upper part of the second fixing ring (10) is fixedly connected to a limit rod (11), and the upper part of the limit rod (11) is plugged into There is a No. 3 connecting tube (14), a spring (12) is arranged on the surface of the limiting plug rod (11), one end of the spring (12) is fixedly connected to the No. 2 fixing ring (10), and the other end of the spring (12) is fixedly connected to a sleeve ring (13), the sleeve ring (13) is slidably connected to the limiting plug rod (11), and the top of the sleeve ring (13) is in contact with the bottom of the No. 3 connecting tube (14), and a filter box (15) is fixedly connected inside the No. 3 connecting tube (14).

2. The high-strength PFA nozzle according to claim 1, characterized in that: A connecting plate (3) is fixedly connected to the side of the No. 1 connecting pipe (2), and a slot (5) is provided on the upper part of the connecting plate (3).

3. The high-strength PFA nozzle according to claim 2, characterized in that: An inserting plate (4) is inserted into the slot (5), and a sealing gasket (6) is fixedly connected to the upper part of the inserting plate (4).

4. The high-strength PFA nozzle according to claim 1, characterized in that: The surface of the filter box (15) is provided with a plurality of filter holes, and the plurality of filter holes are evenly distributed on the surface of the filter box (15).

5. The high-strength PFA nozzle according to claim 1, characterized in that: A No. 1 fixing ring (7) is fixedly connected inside the No. 1 connecting pipe (2), and the bottom of the No. 1 fixing ring (7) is in contact with the top of the No. 3 connecting pipe (14).

6. The high-strength PFA nozzle according to claim 1, characterized in that: The third connecting pipe (14) is provided with a nozzle head (17) inside, and the limiting plug rod (11) is located inside the limiting plug hole (16) and plugged into the third connecting pipe (14).

7. The high-strength PFA nozzle according to claim 1, characterized in that: The second connecting pipe (8) is externally fixedly connected with a mounting nut (9).

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