Injection mold adopting simple hot nozzle sleeve

Abstract

The utility model relates to the technical field of hot nozzle sleeves, and discloses an injection mold adopting a simple hot nozzle sleeve, which comprises a hot nozzle sleeve body arranged on the outer side of the bottom of a hot runner system main body. According to the simple hot nozzle sleeve injection mold, the original round hot nozzle sleeve body with a hanging table is designed into the hot nozzle sleeve body with the hanging lug and the thickening table, and the pin is extruded to the hanging lug, so that the pin can be extruded when the panel and the mold core are mounted and fixed, and the hanging lug is limited in the hot nozzle groove; compared with a traditional fixing mode, an extrusion limiting mode is utilized, the hot nozzle sleeve body is more convenient to disassemble and replace, and meanwhile the thickening table can prevent the problem that the hot nozzle sleeve body is difficult to repair due to the fact that the hot nozzle sleeve body is thin and prone to breakage in the long-term use process; and the extrusion mode of the hanging lug is limited, so that the problem that the application range of the hot nozzle sleeve body is small due to limitation of a mold structure is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot nozzle sleeves, in particular to an injection mold with a simple hot nozzle sleeve. Background Technique

[0002] In an injection mold for injecting plastic products with a needle valve hot runner, the position of the needle valve injection port corresponding to the die steel is prone to wear, resulting in flash on the product. For this situation, a circular hot nozzle sleeve is generally made at the position of the hot nozzle (including the needle valve gate) corresponding to the die. After the steel at the gate position wears, it can be solved by replacing the circular hot nozzle sleeve. In the prior art, most are circular hot nozzle sleeves with hanging platforms, and a flow channel is designed in the hot nozzle sleeve for the coolant to flow, facilitating the cooling and constant temperature of the hot nozzle. When the needle valve of the hot runner is driven by a cylinder to move up and down to open, the melted plastic particles will be injected into the cavity of the mold through the hot nozzle and the hot nozzle sleeve to form a product.

[0003] A hot nozzle sleeve disclosed in the patent with the current publication number CN218928489U has a main body. The main body forms a receiving cavity with an inlet and an outlet at both ends. Water inlets and water outlets are spaced apart on the circumferential side of the main body. A water transportation channel is arranged in the cavity wall of the receiving cavity, and both ends of the water transportation channel are respectively communicated with the water inlet and the water outlet. One end of the water transportation channel extends spirally along the circumferential side of the main body in the direction from the water inlet to the inlet and extends spirally along the circumferential side of the main body in the direction from the inlet to the outlet; the technical solution of this device has a shorter water transportation distance from the water to the hot nozzle, improving the heat dissipation effect of the hot nozzle sleeve on the hot nozzle.

[0004] Although the above device solves the problem of improving the heat dissipation effect of the hot nozzle, there are still the following deficiencies: The hot nozzle sleeve is fixed to the die by bolt fixing from both sides. The applicable range of the limiting method from both sides is small, and it is often difficult to limit the circular hot nozzle sleeve with a built-in hanging platform on the die due to the limitation of the die structure, resulting in inconvenience. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides an injection mold with a simple hot nozzle sleeve, which is convenient for disassembling and replacing the hot nozzle sleeve.

[0006] To achieve the above object, the present utility model provides the following technical solution: A simple hot nozzle sleeve injection mold, including a hot nozzle sleeve body installed on the outer side of the bottom of the hot runner system main body. A panel is provided on the outer side of the hot nozzle sleeve body, and a mold core is connected inside the panel. The panel and the mold core are threadedly connected through fixing bolts. A hot nozzle groove is opened inside the mold core, and the hot runner system main body passes through the panel and the mold core and is connected to the hot nozzle groove. A thickening platform is provided on the outer side of the hot nozzle sleeve body, and hanging ears are fixedly connected to both sides of the thickening platform. The end face of the hanging ear is semicircularly arranged. The hot nozzle sleeve body, the thickening platform, and the hanging ears are integrally processed. The hot nozzle sleeve body, the thickening platform, and the hanging ears are installed in the hot nozzle groove. Pin bolts are installed on the tops of both hanging ears. The bottom of the pin bolt abuts against the top surface of the hanging ear, and the top surface of the pin bolt abuts against the bottom surface of the panel.

[0007] Further, the bottom of the pin bolt is inserted into the top surface of the hanging ear.

[0008] Further, a circular insertion block is fixedly connected to the bottom of the pin bolt, and a circular insertion slot is opened at the center of the top surface of the hanging ear. The circular insertion slot is inserted with the circular insertion block.

[0009] Further, a rectangular insertion block is fixedly connected to the bottom of the pin bolt, and a rectangular insertion slot corresponding to the position of the rectangular insertion block is opened at the center of the top surface of the hanging ear.

[0010] Further, the bottom of the pin bolt is threadedly connected to the hanging ear.

[0011] Further, a threaded convex block is fixedly connected to the bottom of the pin bolt, and a threaded groove is opened at the center of the top surface of the hanging ear. The threaded groove is threadedly connected to the threaded convex block.

[0012] Further, a thread groove is opened on one side of the pin bolt away from the hanging ear.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] In the present utility model, the original circular hot nozzle sleeve body with a hanging platform is designed into a hot nozzle sleeve body with hanging ears and a thickening platform. By using the extrusion of the pin bolt on the hanging ears, when the panel is installed and fixed with the mold core, the pin bolt can be extruded, thereby realizing the limit of the hanging ears in the hot nozzle groove. Compared with the traditional fixing method, the extrusion limit method is more convenient for the disassembly and replacement of the hot nozzle sleeve body. At the same time, the thickening platform can prevent the problem of difficult repair caused by the thin and easy-to-break of the hot nozzle sleeve body during long-term use; the limit method of the extrusion of the hanging ears also solves the problem of the small application range of the hot nozzle sleeve body caused by the limitation of the mold structure. The structure is simple, the operation is convenient, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1Schematic diagram of the overall three-dimensional structure of the hot nozzle sleeve body of the injection mold with a simple hot nozzle sleeve provided in the first embodiment of the present utility model;

[0016] Figure 2 Schematic diagram of the overall three-dimensional sectional structure of the hot nozzle sleeve body of the injection mold with a simple hot nozzle sleeve provided in the first embodiment of the present utility model;

[0017] Figure 3 Schematic diagram of the partial three-dimensional sectional structure of the hot nozzle sleeve body of the injection mold with a simple hot nozzle sleeve provided in the first embodiment of the present utility model;

[0018] Figure 4 Schematic diagram of the overall three-dimensional structure of the hot runner system main body of the injection mold with a simple hot nozzle sleeve provided in the first embodiment of the present utility model;

[0019] Figure 5 This Figure 4 Enlarged three-dimensional structure diagram of A in;

[0020] Figure 6 Schematic diagram of the overall three-dimensional structure of the hot runner system main body of the injection mold with a simple hot nozzle sleeve provided in the second embodiment of the present utility model;

[0021] Figure 7 Schematic diagram of the overall three-dimensional structure of the hot runner system main body of the injection mold with a simple hot nozzle sleeve provided in the fourth embodiment of the present utility model;

[0022] Figure 8 Schematic diagram of the overall three-dimensional structure of the hot runner system main body of the injection mold with a simple hot nozzle sleeve provided in the third embodiment of the present utility model.

[0023] In the figure: 1. Hot nozzle sleeve body; 11. Thickening platform; 2. Hot runner system main body; 3. Pin; 31. Threaded tooth groove; 32. Circular insert block; 33. Threaded convex block; 34. Rectangular insert block; 4. Mold core; 41. Hot nozzle groove; 5. Panel; 6. Fixed bolt; 7. Hanging ear; 71. Circular slot; 72. Threaded groove; 73. Rectangular slot. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0025] Embodiment 1

[0026] As Figures 1 to 8As shown in the figure, a simple hot nozzle sleeve injection mold includes a hot nozzle sleeve body 1 installed on the outer side of the bottom of the hot runner system body 2. A panel 5 is provided on the outer side of the hot nozzle sleeve body 1. A mold core 4 is connected inside the panel 5. The panel 5 and the mold core 4 are threadedly connected by fixing bolts 6. A hot nozzle groove 41 is opened in the mold core 4. The hot runner system body 2 passes through the panel 5 and the mold core 4 and is connected to the hot nozzle groove 41. A thickening platform 11 is provided on the outer side of the hot nozzle sleeve body 1. Hanging ears 7 are fixedly connected to both sides of the thickening platform 11. The end face of the hanging ear 7 is semicircular. The hot nozzle sleeve body 1, the thickening platform 11 and the hanging ear 7 are integrally processed. The hot nozzle sleeve body 1, the thickening platform 11 and the hanging ear 7 are installed in the hot nozzle groove 41. Pin shafts 3 are installed on the tops of both hanging ears 7. The bottom of the pin shaft 3 abuts against the top surface of the hanging ear 7, and the top surface of the pin shaft 3 abuts against the bottom surface of the panel 5.

[0027] As Figure 1 shown, the simple hot nozzle sleeve injection mold in the present utility model is similar to the existing hot nozzle sleeve structure. For example, a hot nozzle sleeve disclosed in the patent with the publication number CN218928489U. The main improvement of the present utility model lies in facilitating the disassembly and replacement of the hot nozzle sleeve. As Figures 1 to 8 shown, when the simple hot nozzle sleeve injection mold in the present utility model is in use, the staff installs and fixes the hot runner system body 2 through the mold. Then, the hot nozzle sleeve body 1 and the hanging ears 7 are installed in the hot nozzle groove 41 in the mold core 4. When the hot nozzle groove 41 is processed here, it should be completely corresponding to the hot nozzle sleeve body 1 and the hanging ears 7. Then, the pin shaft 3 is pressed against the top surfaces of the two hanging ears 7. Finally, the panel 5 and the mold core 4 are combined and installed, and the panel 5 and the mold core 4 are fastened by using the fixing bolts 6, so that the top surface of the pin shaft 3 is squeezed and limited by the panel 5, thereby achieving the limitation of the hot nozzle sleeve body 1. At this time, the hot runner system body 2 is located inside the hot nozzle sleeve body 1, that is, the installation of the hot nozzle sleeve body 1 is completed; when it is necessary to disassemble and replace the hot nozzle sleeve body 1, only the fixing bolts 6 between the panel 5 and the mold core 4 need to be separated, so that the mold core 4 is separated from the panel 5, and then the pin shaft 3 in the hot nozzle groove 41 can be taken out, so as to take out and replace the hot nozzle sleeve body 1;

[0028] The hot runner system body 2 here is an existing mature technology, so no more details are described here; in addition, the design of the hanging ears 7 on both sides of the hot nozzle sleeve body 1 should avoid the insert pins holes and water channels around the hot nozzle clearance holes to avoid affecting the normal use of the hot nozzle sleeve body 1.

[0029] By designing the original circular nozzle sleeve body 1 with a hanging platform as a nozzle sleeve body 1 with hanging ears 7 and a thickened platform 11, and using the pin 3 to squeeze the hanging ears 7, when the panel 5 is installed and fixed to the mold core 4, the pin 3 can be squeezed, thereby realizing the limit of the hanging ears 7 in the nozzle slot 41. Compared with the traditional fixing method, the squeezing limit method is more convenient for disassembling and replacing the nozzle sleeve body 1. At the same time, the thickened platform 11 can prevent the problem of difficult repair caused by the easy breakage of the nozzle sleeve body 1 due to its thinness during long-term use; the limit of the squeezing method of the hanging ears 7 also solves the problem of the small application range of the nozzle sleeve body 1 caused by the mold structure limitation.

[0030] Embodiment 2

[0031] This embodiment provides a nozzle sleeve body 1 of a simple nozzle sleeve injection mold. The structure of the nozzle sleeve body 1 of the simple nozzle sleeve injection mold is basically the same as that of the nozzle sleeve body 1 of the simple nozzle sleeve injection mold in Embodiment 1. The main difference between the two is that as Figure 6 shown, the bottom of the pin 3 and the top surface of the hanging ear 7 are inserted and set. Thus, when the pin 3 is limited to the hanging ear 7, the position of the pin 3 on the hanging ear 7 can be preferentially fixed, preventing the pin 3 from displacing on the hanging ear 7.

[0032] Preferably, a circular insert block 32 is fixedly connected to the bottom of the pin 3, and a circular slot 71 is opened at the center of the top surface of the hanging ear 7. The circular slot 71 and the circular insert block 32 are inserted and set. When the pin 3 is squeezed against the hanging ear 7, the circular insert block 32 at the bottom of the pin 3 will directly be inserted into the circular slot 71 on the top surface of the hanging ear 7, so that the pin 3 can pre-limit the hanging ear 7, and at the same time improve the convenience of the connection between the pin 3 and the hanging ear 7.

[0033] Embodiment 3

[0034] This embodiment provides a nozzle sleeve body 1 of a simple nozzle sleeve injection mold. The structure of the nozzle sleeve body 1 of the simple nozzle sleeve injection mold is basically the same as that of the nozzle sleeve body 1 of the simple nozzle sleeve injection mold in Embodiment 1. The main difference between the two is that as Figure 5 and Figure 6 shown, a rectangular insert block 34 is fixedly connected to the bottom of the pin 3, and a rectangular slot 73 corresponding to the position of the rectangular insert block 34 is opened at the center of the top surface of the hanging ear 7.

[0035] Preferably, when the pin 3 is inserted into the hanging ear 7, the rectangular insert block 34 will be inserted into the rectangular slot 73. With this setting, the position of the pin 3 on the hanging ear 7 can be pre-fixed; and by replacing the circular insertion structure with a rectangular one, the friction between the rectangular insert block 34 and the rectangular slot 73 can be increased, further improving the stability of the pin 3 in the hanging ear 7.

[0036] Example 4

[0037] This embodiment provides a nozzle sleeve body 1 of an injection mold with a simple nozzle sleeve. The structure of the nozzle sleeve body 1 of the injection mold with a simple nozzle sleeve is basically the same as that of the nozzle sleeve body 1 of the injection mold with a simple nozzle sleeve in Embodiment 1. The main difference between the two is that as Figure 5 and Figure 6 shown, the bottom of the pin 3 is threadedly connected to the lug 7

[0038] Preferably, a threaded protrusion 33 is fixedly connected to the bottom of the pin 3, and a threaded groove 72 is opened at the center of the top surface of the lug 7. The threaded groove 72 is threadedly connected to the threaded protrusion 33. When the pin 3 presses against the lug 7, the threaded protrusion 33 will be threadedly connected to the threaded groove 72. This setting can make the pin 3 press the lug 7 more tightly, further improving the stability of the lug 7

[0039] Example 5

[0040] This embodiment provides a nozzle sleeve body 1 of an injection mold with a simple nozzle sleeve. The structure of the nozzle sleeve body 1 of the injection mold with a simple nozzle sleeve is basically the same as that of the nozzle sleeve body 1 of the injection mold with a simple nozzle sleeve in Embodiment 1. The main difference between the two is that as Figure 5 and Figure 6 shown, a thread groove 31 is opened on one side of the pin 3 away from the lug 7. When the pin 3 needs to be disassembled, a bolt can be threadedly connected to the thread groove 31, and then the pin 3 can be pulled out from the nozzle groove 41

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention

Claims

1. An injection mold using a simple hot nozzle sleeve, comprising a hot nozzle sleeve body (1) installed on the outer side of the bottom of the hot runner system main body (2), characterized in that, A panel (5) is provided on the outer side of the hot nozzle sleeve body (1). A mold core (4) is connected inside the panel (5). The panel (5) and the mold core (4) are threadedly connected by fixing bolts (6). A hot nozzle groove (41) is formed inside the mold core (4). The main body (2) of the hot runner system passes through the panel (5) and the mold core (4) and is connected to the hot nozzle groove (41). A thickening platform (11) is provided on the outer side of the hot nozzle sleeve body (1). Hanging ears (7) are fixedly connected to both sides of the thickening platform (11). The end face of the hanging ear (7) is semicircular. The hot nozzle sleeve body (1), the thickening platform (11), and the hanging ears (7) are integrally processed. The hot nozzle sleeve body (1), the thickening platform (11), and the hanging ears (7) are installed in the hot nozzle groove (41). Pin bolts (3) are installed on the tops of both hanging ears (7). The bottom of the pin bolt (3) abuts against the top surface of the hanging ear (7), and the top surface of the pin bolt (3) abuts against the bottom surface of the panel (5).

2. The injection mold with a simple hot nozzle sleeve according to claim 1, characterized in that The bottom of the pin bolt (3) is inserted into the top surface of the hanging ear (7).

3. A simple hot nozzle sleeve injection mold according to claim 1 or 2, characterized in that A circular insertion block (32) is fixedly connected to the bottom of the pin bolt (3). A circular insertion slot (71) is formed at the center of the top surface of the hanging ear (7). The circular insertion slot (71) is inserted with the circular insertion block (32).

4. A simple hot nozzle sleeve injection mold according to claim 1 or 2, characterized in that A rectangular insertion block (34) is fixedly connected to the bottom of the pin bolt (3). A rectangular insertion slot (73) corresponding to the position of the rectangular insertion block (34) is formed at the center of the top surface of the hanging ear (7).

5. The injection mold using a simple hot nozzle sleeve according to claim 3, characterized in that, A rectangular insertion block (34) is fixedly connected to the bottom of the pin bolt (3). A rectangular insertion slot (73) corresponding to the position of the rectangular insertion block (34) is formed at the center of the top surface of the hanging ear (7).

6. A simplified hot nozzle sleeve injection mold according to claim 1, 2 or 5, characterized in that The bottom of the pin bolt (3) is threadedly connected to the hanging ear (7).

7. A simplified hot nozzle sleeve injection mold according to claim 1, 2 or 5, characterized in that, A threaded convex block (33) is fixedly connected to the bottom of the pin bolt (3). A threaded groove (72) is formed at the center of the top surface of the hanging ear (7). The threaded groove (72) is threadedly connected to the threaded convex block (33).

8. A simple hot nozzle sleeve injection mold according to claim 1, 2 or 5, characterized in that A thread groove (31) is formed on the side of the pin bolt (3) away from the hanging ear (7).

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