Nozzle of injection molding machine for plastic production

Abstract

The utility model discloses a nozzle of an injection molding machine for plastic production, which relates to the technical field of nozzles of injection molding machines and comprises a nozzle and a connecting pipe, the connecting pipe is arranged at one end of the nozzle, a fixing structure is arranged between the nozzle and the connecting pipe and comprises a positioning block, a positioning groove and a fastening component, the positioning groove is arranged on the inner wall of the nozzle, and the fastening component is arranged on the inner wall of the nozzle. The positioning block and an inner cavity of the positioning groove are arranged in a sliding and penetrating mode, the fastening assembly is arranged between the positioning block and the positioning groove, and the fastening assembly is used for stabilizing the position of the positioning block in the inner cavity of the positioning groove. Through the arrangement mode that the fixing structure and the closing structure are matched, the connecting pipe and the nozzle can be flexibly disassembled and assembled, the problem that the connecting pipe and the nozzle are not easy to disassemble due to corrosion is solved, meanwhile, the phenomena of thread slipping and loosening caused by threaded connection between the connecting pipe and the nozzle are avoided, and the service life of the nozzle is prolonged. The practicability of connection between the connecting pipe and the nozzle is effectively improved, and then the fastening effect of connection between the connecting pipe and the nozzle is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machine nozzles, in particular to a nozzle of an injection molding machine for plastic production. Background Art

[0002] The injection molding machine nozzle refers to the plastic injection nozzle that supplies plastic to the injection molding machine for fusion processing. It is mainly used for plastic material transportation, nozzle opening and closing, and plastic injection during the injection molding process of the injection molding machine.

[0003] The nozzle of the injection molding machine is composed of a nozzle body, a connecting pipe and a connecting flange, wherein the connecting pipe is used to transport the plastic to be ejected. Therefore, the connecting pipe needs to be connected to the nozzle body to facilitate the subsequent ejection of the plastic from the nozzle body. The existing connecting pipe is connected to the nozzle body by a threaded connection, and the connecting pipe can be directly rotated into the inner cavity of the nozzle body for installation and fixation. However, with long-term rotation, the threads between the connecting pipe and the nozzle body will be worn out due to wear, which is prone to thread slippage and loosening, and then easily causes the connection between the connecting pipe and the nozzle body to loosen and fall off, reducing the fastening effect of the connection between the connecting pipe and the nozzle body, thereby affecting the plastic transportation from the connecting pipe to the nozzle and reducing the practicality of the connecting pipe and the nozzle. Utility Model Content

[0004] The purpose of the utility model is to provide a nozzle for an injection molding machine for plastic production to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a nozzle of an injection molding machine for plastic production, comprising a nozzle and a connecting pipe, wherein the connecting pipe is fixedly arranged at one end of the nozzle, and a fixing structure is arranged between the nozzle and the connecting pipe, wherein the fixing structure comprises:

[0006] A positioning block, the positioning block is fixedly arranged on the outer wall of the connecting pipe;

[0007] A positioning groove, wherein the positioning groove is provided on the inner wall of the nozzle, and the positioning block is slidably interlaced with the inner cavity of the positioning groove;

[0008] A fastening assembly is arranged between the positioning block and the positioning groove, and is used to stabilize the position of the positioning block in the inner cavity of the positioning groove.

[0009] Preferably, the fastening assembly includes a fastening rod and a fastening groove, the fastening groove is opened on the end surface of the positioning block facing the fastening groove, the fastening rod is fixedly inserted in the inner cavity of the fastening groove, and the end of the fastening rod away from the fastening groove passes through the outer wall of the nozzle.

[0010] Preferably, the fixing structure further comprises a mounting ring, which is composed of two detachable semicircular rings, and both ends of the mounting ring are provided with a closed structure.

[0011] Preferably, the outer wall fixing sleeve of the fastening rod is provided with a sealing sleeve, and the bottom end of the sealing sleeve is interlaced and connected with the inner cavity of the fastening groove.

[0012] Preferably, the closed structure includes a first closed block, a closed groove and a second closed block, the first closed block is fixedly arranged at the end of one of the semicircular rings, the closed groove is opened at the end of the other semicircular ring, the second closed block is fixedly arranged in the inner cavity of the closed groove, and the first closed block and the second closed block are magnetically adsorbed.

[0013] Preferably, the cross section of the fastening groove is in the shape of an inverted convex letter, and the end of the fastening rod facing away from the fastening groove is fixedly arranged on the inner wall of the mounting ring.

[0014] Technical effects and advantages of the utility model:

[0015] The utility model adopts a setting mode in which a fixed structure and a closed structure are coordinated to enable the connecting pipe and the nozzle to be flexibly disassembled and assembled, thereby avoiding the problem that the connecting pipe and the nozzle are difficult to disassemble due to rust, and at the same time avoiding the phenomenon of thread slippage and loosening caused by the threaded connection between the connecting pipe and the nozzle, thereby effectively improving the practicality of the connection between the connecting pipe and the nozzle, and further enhancing the fastening effect of the connection between the connecting pipe and the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a schematic diagram of the side sectional structure of the utility model.

[0018] Figure 3 For this utility model Figure 2 A is an enlarged structural diagram of FIG.

[0019] Figure 4 It is a front sectional structural schematic diagram of the utility model.

[0020] Figure 5 For this utility model Figure 4 Schematic diagram of the enlarged structure at B.

[0021] In the figure: 1. nozzle; 2. connecting pipe; 3. fixing structure; 301. positioning block; 302. positioning groove; 303. fastening rod; 304. mounting ring; 305. sealing sleeve; 306. fastening groove; 4. closing structure; 401. first closing block; 402. closing groove; 403. second closing block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides Figure 1-5 The nozzle of an injection molding machine for plastic production shown in the figure includes a nozzle 1 and a connecting pipe 2. The connecting pipe 2 is fixedly arranged at one end of the nozzle 1. A fixing structure 3 is arranged between the nozzle 1 and the connecting pipe 2. The fixing structure 3 includes a positioning block 301, a positioning groove 302 and a fastening assembly. The positioning block 301 is fixedly arranged on the outer wall of the connecting pipe 2. The positioning groove 302 is opened on the inner wall of the nozzle 1. The positioning block 301 and the inner cavity of the positioning groove 302 are slidably interlaced.

[0024] like Figure 1 , Figure 2 and Figure 3 As shown in the figure, the positioning block 301 is located on the outer wall of the end of the connecting tube 2 facing the nozzle 1. When one end of the connecting tube 2 is connected with one end of the nozzle 1 through insertion, the positioning block 301 can be made to correspond to the position of the positioning groove 302, so that the connecting tube 2 moves into the inner cavity of the nozzle 1, and the positioning block 301 slides along the inner cavity of the positioning groove 302 at the same time, so that the connecting tube 2 can be quickly and accurately connected to the nozzle 1, thereby avoiding the rotation of the position of the connecting tube 2 after entering the inner cavity of the nozzle 1, providing stability for the connection between the connecting tube 2 and the nozzle 1. At the same time, the sliding connection mode also provides convenience for the connection between the connecting tube 2 and the nozzle 1, improving the convenience and efficiency of the connection between the connecting tube 2 and the nozzle 1. With the setting of the fastening component, after the positioning block 301 moves to one side of the inner cavity of the positioning groove 302, the position of the positioning block 301 can be kept stable, thereby ensuring the firmness of the installation of the connecting tube 2 in the inner cavity of the nozzle 1. The other side of the inner cavity of the positioning groove 302 is connected with one end of the nozzle 1, providing space for the insertion of the positioning block 301.

[0025] The fastening assembly is arranged between the positioning block 301 and the positioning groove 302. The fastening assembly is used to stabilize the position of the positioning block 301 in the inner cavity of the positioning groove 302. The fastening assembly includes a fastening rod 303 and a fastening groove 306. The fastening groove 306 is opened on the end face of the positioning block 301 facing the fastening groove 306. The fastening rod 303 is fixedly inserted in the inner cavity of the fastening groove 306. The end of the fastening rod 303 away from the fastening groove 306 passes through the outer wall of the nozzle 1. The cross-section of the fastening groove 306 is an inverted convex shape. The end of the fastening rod 303 away from the fastening groove 306 is fixedly arranged on the inner wall of the mounting ring 304. The outer wall fixed sleeve of the fastening rod 303 is provided with a sealing sleeve 305, and the bottom end of the sealing sleeve 305 is inserted and connected with the inner cavity of the fastening groove 306.

[0026] like Figure 2 and Figure 3 As shown in the figure, after the positioning block 301 moves to one side of the inner cavity of the positioning groove 302, the position of the positioning block 301 is fixed by interlacing the fastening rod 303 and the fastening groove 306, so that the position of the connecting pipe 2 in the nozzle 1 can be quickly fixed, thereby providing convenience for the connection and installation between the connecting pipe 2 and the nozzle 1, avoiding the phenomenon of thread slippage and loosening between the connecting pipe 2 and the nozzle 1 due to the threaded connection, ensuring the stability of the installation and the flexibility of disassembly and assembly between the connecting pipe 2 and the nozzle 1, and the convex-shaped setting of the cross-section of the fastening groove 306, on the one hand, provides a space for the fastening rod 303 to be inserted and connected, and on the other hand, provides an interlaced space for the sealing sleeve 305, so that the sealing sleeve 305 can be fixed to the positioning block The gap between 301 and the positioning groove 302 is sealed, so as to ensure the sealing effect of the subsequent use of the connecting pipe 2. The sealing sleeve 305 is any one of elastic rubber or elastic silicone, with strong sealing performance and friction resistance. The sealing sleeve 305 is fixedly sleeved on the outer wall of the fastening rod 303 and can move with the movement of the fastening rod 303. When the fastening rod 303 and the fastening groove 306 are inserted and connected, the bottom end of the sealing sleeve 305 will also extend to the inner cavity of the fastening groove 306 for insertion. At the same time, the friction generated by the outer wall of the sealing sleeve 305 and the inner wall of the nozzle 1 can strengthen the stability of the insertion connection between the fastening rod 303 and the fastening groove 306, thereby improving the sealing performance of the connecting pipe 2 and strengthening the firmness of the installation of the connecting pipe 2.

[0027] The fixing structure 3 further comprises a mounting ring 304 , which is composed of two detachable semicircular rings, and both ends of the mounting ring 304 are provided with a closing structure 4 .

[0028] like Figure 2 and Figure 4As shown in the figure, the mounting ring 304 is closed and sleeved on the outer wall of the nozzle 1, and can connect the fastening rod 303 with the inner cavity of the fastening groove 306, and can make the sealing sleeve 305 seal the gap between the positioning block 301 and the positioning groove 302, thereby providing position support for the fastening rod 303 and the sealing sleeve 305, and strengthening the stability of the position insertion of the fastening rod 303 and the sealing sleeve 305. At the same time, the detachable mounting ring 304 also facilitates the disassembly between the fastening rod 303 and the fastening groove 306.

[0029] The closing structure 4 includes a first closing block 401, a closing groove 402, and a second closing block 403. The first closing block 401 is fixedly arranged at the end of one of the semicircular rings, the closing groove 402 is opened at the end of the other semicircular ring, and the second closing block 403 is fixedly arranged in the inner cavity of the closing groove 402. The first closing block 401 and the second closing block 403 are magnetically adsorbed.

[0030] like Figure 4 and Figure 5 As shown in the figure, the first closing block 401 and the second closing block 403 are both magnetic blocks, and the magnetism of the first closing block 401 and the second closing block 403 is opposite, so that the first closing block 401 and the second closing block 403 can be magnetically attracted to each other, and the setting of the closing groove 402 provides a space for the first closing block 401 and the second closing block 403 to be adsorbed and aligned, so that the first closing block 401 and the second closing block 403 can be quickly aligned and adsorbed, which provides convenience for the disassembly and assembly of the mounting ring 304, and further facilitates the disassembly and assembly between the fastening rod 303 and the fastening groove 306, and also provides convenience for the disassembly and assembly between the connecting pipe 2 and the nozzle 1, effectively enhancing the convenience and efficiency of the disassembly and assembly between the connecting pipe 2 and the nozzle 1, and further effectively improving the practicality of the nozzle 1.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A nozzle for an injection molding machine for plastic production, comprising a nozzle (1) and a connecting pipe (2), wherein the connecting pipe (2) is fixedly arranged at one end of the nozzle (1), characterized in that: A fixing structure (3) is provided between the nozzle (1) and the connecting pipe (2), and the fixing structure (3) comprises: A positioning block (301), wherein the positioning block (301) is fixedly arranged on the outer wall of the connecting pipe (2); A positioning groove (302), wherein the positioning groove (302) is provided on the inner wall of the nozzle (1), and the positioning block (301) is slidably interlaced with the inner cavity of the positioning groove (302); A fastening assembly is arranged between the positioning block (301) and the positioning groove (302), and is used to stabilize the position of the positioning block (301) in the inner cavity of the positioning groove (302).

2. A nozzle for an injection molding machine for plastic production according to claim 1, characterized in that: The fastening assembly comprises a fastening rod (303) and a fastening groove (306); the fastening groove (306) is formed on an end surface of the positioning block (301) facing the fastening groove (306); the fastening rod (303) is fixedly inserted into an inner cavity of the fastening groove (306); and an end of the fastening rod (303) facing away from the fastening groove (306) penetrates an outer wall of the nozzle (1).

3. The nozzle of the injection molding machine for plastic production according to claim 1, characterized in that: The fixing structure (3) further comprises a mounting ring (304), wherein the mounting ring (304) is composed of two detachable semicircular rings, and both ends of the mounting ring (304) are provided with a closed structure (4).

4. The nozzle of the injection molding machine for plastic production according to claim 2, characterized in that: The outer wall fixing sleeve of the fastening rod (303) is provided with a sealing sleeve (305), and the bottom end of the sealing sleeve (305) is connected with the inner cavity of the fastening groove (306) through insertion.

5. The nozzle of the injection molding machine for plastic production according to claim 3, characterized in that: The closed structure (4) comprises a first closed block (401), a closed groove (402) and a second closed block (403); the first closed block (401) is fixedly arranged at the end of one of the semicircular rings; the closed groove (402) is opened at the end of the other semicircular ring; the second closed block (403) is fixedly arranged in the inner cavity of the closed groove (402); the first closed block (401) and the second closed block (403) are magnetically adsorbed.

6. The nozzle of the injection molding machine for plastic production according to claim 2, characterized in that: The cross section of the fastening groove (306) is in the shape of an inverted convex letter "U", and the end of the fastening rod (303) facing away from the fastening groove (306) is fixedly arranged on the inner wall of the mounting ring (304).

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