A nozzle quick replacement device of an injection molding machine

Abstract

The utility model discloses a kind of injection molding machine nozzle quick replacement device, including injection molding machine main body, the front end of the injection molding machine main body is equipped with nozzle assembly, it is detachable structure between the nozzle assembly and injection molding machine main body, the rear end surface center of the nozzle assembly is equipped with fixed spiral pipe, the outer surface of the fixed spiral pipe is fixed by thread structure and the close screw joint of the inner slot of injection molding machine main body, the outer surface of the nozzle assembly is equipped with positioning clamping block, the front end surface of the injection molding machine main body is provided with locking chuck, the surface of the positioning clamping block is fixed by clamping groove structure and locking chuck clamping.The utility model is protected by the convenient assembly type design of the nozzle assembly part of injection molding machine, by using thread screw joint structure cooperation clamping fixed structure, the front end of nozzle assembly and injection molding machine main body can be fixed tightly, it has the advantage of disassembling and repairing conveniently, the quick release type design of injection molding machine nozzle is carried out, and it is convenient to disassemble and replace regularly.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molding machine accessories, specifically to a quick nozzle replacement device for injection molding machines. Background Technology

[0002] Injection molding machines, also known as injection molding machines or injection molding machines, are the main molding equipment used to produce various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds. They are classified as vertical, horizontal, and all-electric. Injection molding machines heat the plastic, apply high pressure to the molten plastic, and inject it to fill the mold cavity. An injection molding machine typically consists of an injection system, a mold clamping system, a hydraulic transmission system, an electrical control system, a lubrication system, a heating and cooling system, and a safety monitoring system.

[0003] Chinese patent document CN209063425U discloses a nozzle for an injection molding machine, belonging to the field of injection molding machines. The nozzle includes a nozzle body with a threaded groove at its outer end. An injection mold is located at the outer end of the nozzle body, and the nozzle body and mold are slidably connected. Three positioning grooves are carved at the outer end of the injection mold. A limit ring is fixedly connected to the outer end of the nozzle body. A threaded fastening ring is provided at the outer end of the nozzle body, matching the threaded groove. A detection block is provided at the outer end of the nozzle body, with a through hole at its outer end matching the nozzle body. Three receiving grooves are carved at the outer end of the detection block, and rectangular fixing blocks are slidably connected within these grooves. This design enables real-time detection of the nozzle's position and provides protection for the injection molding machine when its position deviates.

[0004] The existing technology has drawbacks in terms of inconvenience in disassembling, maintaining and replacing the nozzle assembly of the injection molding machine. At the same time, the installation is not tight and stable enough, and the poor sealing performance can easily cause the glue to leak. Therefore, it is necessary to develop a quick replacement device for the nozzle of the injection molding machine. Utility Model Content

[0005] The purpose of this utility model is to provide a quick-change device for injection molding machine nozzles, so as to solve the problems mentioned in the background art, which are that the prior art is inconvenient to disassemble and assemble when disassembling, maintaining and replacing injection molding machine nozzle components, and that the installation is not tight and stable enough, and the poor sealing performance can easily cause glue leakage.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a quick-change nozzle device for an injection molding machine, comprising an injection molding machine body, a nozzle assembly installed at the front end of the injection molding machine body, the nozzle assembly and the injection molding machine body having a detachable structure, a fixed spiral tube provided at the center of the rear end surface of the nozzle assembly, the outer surface of the fixed spiral tube being tightly screwed and fixed to the internal groove of the injection molding machine body through a threaded structure, a positioning block installed on the outer surface of the nozzle assembly, a locking chuck provided on the front end surface of the injection molding machine body, and the surface of the positioning block engaging and fixing with the locking chuck through a slot structure.

[0007] Preferably, a sealing ring is installed on the nozzle assembly, a limiting plate is installed on the side surface of the sealing ring, a limiting pin is installed inside the limiting plate, and the front end of the limiting pin is fixed in contact with the surface of the locking chuck by a rubber pad.

[0008] Preferably, the front end surface of the sealing ring is provided with a locking part, and the locking part and the sealing ring are fixed together by a fixing pin.

[0009] Preferably, the front end of the locking part is equipped with an injection molding nozzle, and the injection molding nozzle and the locking part are detachable.

[0010] Preferably, the rear end surface of the injection molding nozzle is sealed and fixed by a flange and a locking part.

[0011] Preferably, the flange surface is fitted with a plurality of limit bolts.

[0012] Preferably, the upper surface of the nozzle assembly is provided with an injection molding connecting tube.

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

[0014] This utility model provides convenient assembly protection for the nozzle assembly of an injection molding machine. By utilizing a threaded connection structure in conjunction with a snap-fit ​​fixing structure, the nozzle assembly can be tightly installed and fixed to the front end of the injection molding machine body. It also has the advantages of convenient disassembly and maintenance. The nozzle of the injection molding machine is designed with quick release, which facilitates its periodic disassembly and replacement. By sealing and protecting the nozzle assembly, leakage of injection molding material in the gaps of the nozzle assembly can be effectively prevented. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the front end structure of the nozzle assembly of this utility model;

[0017] Figure 3This is a schematic diagram of the rear end structure of the nozzle assembly of this utility model.

[0018] In the diagram: 1. Injection molding machine body; 2. Locking chuck; 3. Nozzle assembly; 4. Injection molding machine nozzle; 5. Limit bolt; 6. Flange; 7. Limit plate; 8. Limit pin; 9. Positioning block; 10. Sealing ring; 11. Injection molding connecting pipe; 12. Locking part; 13. Fixing pin; 14. Threaded structure; 15. Slot structure; 16. Fixing spiral tube. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figure 1-3 This utility model provides an embodiment of a quick-change nozzle device for an injection molding machine, comprising an injection molding machine body 1, a nozzle assembly 3 installed at the front end of the injection molding machine body 1, the nozzle assembly 3 and the injection molding machine body 1 having a detachable structure, a fixing screw tube 16 provided at the center of the rear end surface of the nozzle assembly 3, the outer surface of the fixing screw tube 16 being tightly screwed and fixed to the internal groove of the injection molding machine body 1 through a threaded structure 14, a positioning block 9 installed on the outer surface of the nozzle assembly 3, and a locking chuck 2 provided on the front end surface of the injection molding machine body 1, the surface of the positioning block 9 being engaged and fixed to the locking chuck 2 through a slot structure 15.

[0021] Furthermore, a sealing ring 10 is installed on the nozzle assembly 3, a limiting plate 7 is installed on the side surface of the sealing ring 10, and a limiting pin 8 is installed inside the limiting plate 7. The front end of the limiting pin 8 is fixed in contact with the surface of the locking chuck 2 through a rubber pad. By setting the structure of the limiting pin 8 and the rubber pad, the fastening effect between the sealing ring 10 and the locking chuck 2 is improved.

[0022] Furthermore, a locking part 12 is installed on the front end surface of the sealing ring 10. The locking part 12 and the sealing ring 10 are fixed together by a fixing pin 13. The fixing pin 13 can be used to quickly limit and fix the sealing ring 10 and the locking part 12.

[0023] Furthermore, an injection molding nozzle 4 is installed at the front end of the locking part 12. The injection molding nozzle 4 and the locking part 12 are detachable. The rear end surface of the injection molding nozzle 4 is sealed and fixed to the locking part 12 by a flange 6. Multiple limiting bolts 5 are installed on the surface of the flange 6. By setting the flange 6 in conjunction with the limiting bolts 5, it can be used to quickly limit and fix the injection molding nozzle 4 and the locking part 12. It has the advantages of good sealing performance and not easy to leak, and at the same time, it has the advantages of convenient disassembly and replacement of the injection molding nozzle 4.

[0024] Furthermore, the upper surface of the nozzle assembly 3 is provided with an injection molding connection tube 11, which is used to connect the injection molding colloid delivery pipeline and has the advantage of convenient connection.

[0025] Working principle: During use, a nozzle assembly 3 is installed at the front end of the injection molding machine body 1. The nozzle assembly 3 and the injection molding machine body 1 are detachable. A fixed spiral tube 16 is provided at the center of the rear surface of the nozzle assembly 3. The outer surface of the fixed spiral tube 16 is tightly screwed and fixed to the internal groove of the injection molding machine body 1 through a threaded structure 14. A positioning block 9 is installed on the outer surface of the nozzle assembly 3. A locking chuck 2 is provided on the front surface of the injection molding machine body 1. The surface of the positioning block 9 is engaged and fixed to the locking chuck 2 through a slot structure 15. By using the threaded connection structure in conjunction with the locking and fixing structure, the fixed spiral tube 16 is screwed and fixed to the internal groove of the injection molding machine body 1. Then, the positioning block 9 and the locking chuck 2 are engaged and fixed. The nozzle assembly 3 can be tightly installed and fixed to the front end of the injection molding machine body 1, and it also has the advantages of convenient disassembly and maintenance. A sealing ring 10 is installed on the nozzle assembly 3, and a locking part 12 is installed on the front end surface of the sealing ring 10. The locking part 12 and the sealing ring 10 are fixed together by a fixing pin 13. The fixing pin 13 can be used to quickly limit the installation and fixation between the sealing ring 10 and the locking part 12. The injection molding machine nozzle 4 is installed at the front end of the locking part 12. By setting a flange 6 and using a limiting bolt 5, the injection molding machine nozzle 4 and the locking part 12 can be quickly limited and fixed together. It has the advantages of good sealing performance and is not prone to leakage. It also has the advantages of convenient disassembly and replacement of the injection molding machine nozzle 4.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment are all conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, and will not be described in detail here.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick nozzle changer for an injection molding machine, comprising an injection molding machine body (1), characterized in that, The front end of the injection molding machine body (1) is equipped with a nozzle assembly (3). The nozzle assembly (3) and the injection molding machine body (1) are detachable. A fixed spiral tube (16) is provided at the center of the rear end surface of the nozzle assembly (3). The outer surface of the fixed spiral tube (16) is tightly screwed and fixed to the internal groove of the injection molding machine body (1) through a threaded structure (14). A positioning block (9) is installed on the outer surface of the nozzle assembly (3). A locking chuck (2) is provided on the front end surface of the injection molding machine body (1). The surface of the positioning block (9) is engaged and fixed with the locking chuck (2) through a slot structure (15).

2. The quick-change device for injection molding machine nozzles according to claim 1, characterized in that: A sealing ring (10) is installed on the nozzle assembly (3). A limiting plate (7) is installed on the side surface of the sealing ring (10). A limiting pin (8) is installed inside the limiting plate (7). The front end of the limiting pin (8) is fixed in contact with the surface of the locking chuck (2) through a rubber pad.

3. The quick-change device for injection molding machine nozzles according to claim 2, characterized in that: The front end surface of the sealing ring (10) is fitted with a locking part (12), and the locking part (12) and the sealing ring (10) are fixed together by a fixing pin (13).

4. The quick-change device for injection molding machine nozzles according to claim 3, characterized in that: The front end of the locking part (12) is equipped with an injection molding nozzle (4), and the injection molding nozzle (4) and the locking part (12) are detachable.

5. The quick-change device for injection molding machine nozzles according to claim 4, characterized in that: The rear end surface of the injection molding nozzle (4) is sealed and fixed to the locking part (12) by the flange (6).

6. The quick-change device for injection molding machine nozzles according to claim 5, characterized in that: The flange (6) is fitted with a plurality of limit bolts (5).

7. The quick-change device for injection molding machine nozzles according to claim 1, characterized in that: The upper surface of the nozzle assembly (3) is provided with an injection connection tube (11).

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