A hot nozzle with buffering function

Abstract

A kind of hot nozzle with buffering function, including body, heating jacket, first nozzle core, second nozzle core, sealing glue ring, cover plate and locking piece;Body is equipped with first flow channel and second flow channel, first flow channel is communicated with one end of second flow channel, and first flow channel and second flow channel are vertically arranged;First nozzle core is placed in body, first nozzle core is equipped with third flow channel, one end of third flow channel is communicated with the other end of second flow channel, second nozzle core is attached to the side surface of first nozzle core, second nozzle core is equipped with fourth flow channel, fourth flow channel is communicated with the other end of third flow channel, fourth flow channel, third flow channel and second flow channel are respectively horizontally arranged.The utility model according to above-mentioned content proposes a kind of hot nozzle with buffering function, hot flow channel in it is usually inclined to set, and large impact force is generated in the flow process of plastic melt, and it is prone to cause nozzle core to be deflected under the action of impact force and appear the problem of glue leakage.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, and in particular to a hot nozzle with a buffer function. Background Technology

[0002] In the field of injection molding, the hot nozzle is a key component of the mold system, mainly used to transport the thermoplastic melt to the molding cavity of the mold. Its performance directly affects the quality of injection molded products and production efficiency.

[0003] However, in existing hot runners, the internal hot runner channels are usually set at an angle. The plastic melt generates a large impact force during the flow process, which can easily cause the nozzle core to deviate under the action of the impact force and result in glue leakage. Utility Model Content

[0004] The purpose of this invention is to provide a hot nozzle with a buffer function. Its internal hot runner is usually set at an angle. The plastic melt will generate a large impact force during the flow process, which can easily cause the nozzle core to deviate under the action of the impact force and cause the glue leakage.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A heat nozzle with a buffer function includes a body, a heating jacket, a first nozzle core, a second nozzle core, a sealing ring, a cover plate, and a locking element;

[0007] The main body is provided with a first flow channel and a second flow channel, the first flow channel is connected to one end of the second flow channel, and the first flow channel and the second flow channel are arranged perpendicularly.

[0008] The first nozzle is placed on the body. The first nozzle has a third flow channel. One end of the third flow channel is connected to the other end of the second flow channel. The second nozzle is attached to the side of the first nozzle. The second nozzle has a fourth flow channel. The fourth flow channel is connected to the other end of the third flow channel. The fourth flow channel, the third flow channel and the second flow channel are respectively arranged horizontally.

[0009] The heating sleeve is fitted around the outer periphery of the body, the sealing ring is installed on the second nozzle core, the cover plate abuts against the bottom surface of the first nozzle core, one end of the locking member is installed on the cover plate, and the other end of the locking member is installed on the body.

[0010] Furthermore, the main body is provided with a mounting groove, and the mounting groove is provided with a first inclined surface. The first nozzle is placed in the mounting groove, and the first nozzle is provided with a second inclined surface, which is attached to the first inclined surface.

[0011] Specifically, the second nozzle core includes a connecting block and a dispensing head;

[0012] One end of the connecting block is provided with a glue inlet, and the other end of the connecting block is connected to one end of the glue outlet head. The other end of the glue outlet head is provided with a glue outlet. One end of the glue inlet is connected to the third flow channel, and the other end of the glue inlet is connected to the glue outlet through the fourth flow channel.

[0013] The sealing ring is installed on the outer periphery of the dispensing head, and the end of the sealing ring abuts against the connecting block.

[0014] Preferably, the dispensing head includes a first set of segments, a second set of segments, and a third set of segments;

[0015] One end of the second assembly segment is connected to the first assembly segment, and the other end of the second assembly segment is connected to the third assembly segment. The second assembly segment has a third inclined surface, and the diameter of the first assembly segment is larger than the diameter of the third assembly segment.

[0016] In some embodiments, the inner circumference of the sealing ring is provided with a first fitting surface, a second fitting surface, and a third fitting surface;

[0017] The first fitting surface can be attached to the outer periphery of the first fitting segment, the second fitting surface can be attached to the third inclined surface, and the third fitting surface can be attached to the outer periphery of the third fitting segment.

[0018] Furthermore, the sealing ring is provided with a first sealing surface and a second sealing surface;

[0019] The first sealing surface is located on the outside of the third set of surfaces, and the first sealing surface is perpendicular to the second sealing surface.

[0020] Specifically, the outer periphery of the sealing ring is provided with a plurality of limiting protrusions, which are evenly spaced along the circumferential direction of the sealing ring.

[0021] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0022] The system comprises a main body, a first flow channel, a second flow channel, a heating jacket, a first nozzle, a third flow channel, a second nozzle, a fourth flow channel, a sealing ring, a cover plate, and a locking component. The first flow channel is perpendicular to the second flow channel, and the second, third, and fourth flow channels are connected horizontally in sequence. This allows the molten plastic to flow to the bottom of the first flow channel and first collide with the inner wall of the main body to buffer the flow, reducing the flow force of the molten plastic. Then, it flows smoothly to the second and third flow channels on both sides and exits from the horizontally set fourth flow channel. Compared with the traditional inclined flow channel structure, the horizontally set flow channel can reduce the flow force of the molten plastic, thereby avoiding the nozzle misalignment and leakage caused by the force at the connection between the flow channels. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a heat nozzle with a buffer function according to one embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the first flow channel, the second flow channel, the third flow channel and the fourth flow channel according to one embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the first inclined surface and the second inclined surface in one embodiment of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the second nozzle core according to one embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the sealing ring according to one embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the first sealing surface and the second sealing surface according to one embodiment of the present invention;

[0029] The components include: body 1, first flow channel 11, second flow channel 12, mounting groove 13, first inclined surface 14, heating sleeve 2, first nozzle core 3, third flow channel 31, second inclined surface 32, second nozzle core 4, fourth flow channel 41, connecting block 42, glue inlet 421, glue outlet 43, first assembly section 431, second assembly section 432, third inclined surface 4321, third assembly section 433, glue outlet 434, sealing ring 5, first assembly surface 51, second assembly surface 52, third assembly surface 53, first sealing surface 54, second sealing surface 55, limiting protrusion 56, cover plate 6, and locking component 7. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "inner side," "outer side," "inner end," "outer end," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish descriptive features, without any order or emphasis. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0032] In one embodiment of this utility model, such as Figure 1-6As shown, a heating nozzle with a buffer function includes a body 1, a heating sleeve 2, a first nozzle core 3, a second nozzle core 4, a sealing ring 5, a cover plate 6, and a locking member 7. The body 1 has a first flow channel 11 and a second flow channel 12, the first flow channel 11 being connected to one end of the second flow channel 12, and the first flow channel 11 and the second flow channel 12 being arranged perpendicularly. The first nozzle core 3 is placed on the body 1, and the first nozzle core 3 has a third flow channel 31, one end of the third flow channel 31 being connected to the other end of the second flow channel 12. The second nozzle 4 is attached to the side of the first nozzle 3. The second nozzle 4 is provided with a fourth flow channel 41, which is connected to the other end of the third flow channel 31. The fourth flow channel 41, the third flow channel 31 and the second flow channel 12 are respectively arranged horizontally. The heating sleeve 2 is fitted around the outer periphery of the body 1. The sealing ring 5 is installed on the second nozzle 4. The cover plate 6 abuts against the bottom surface of the first nozzle 3. One end of the locking member 7 is installed on the cover plate 6 and the other end of the locking member 7 is installed on the body 1.In this embodiment, the heating sleeve 2 is a commercially available copper sleeve heater. There are two of each of the following components: the second flow channel 12, the first nozzle 3, the second nozzle 4, the sealing ring 5, and the locking element 7. The two second flow channels 12 are located on either side of the first flow channel 11. The bottom end of the first flow channel 11 is connected to one end of each of the two second flow channels 12. The first flow channel 11 and the two second flow channels 12 are arranged perpendicularly. During installation, the heating sleeve 2 is inserted from the bottom of the body 1, covering the outer periphery of the body 1. This facilitates heating the body 1 and ensures that the thermoplastic melt inside the body 1 remains in a flowable state. Then, the body 1 is placed in the mold. Subsequently... Installation requires compatibility with the mold body. Specifically, place the two first nozzle cores 3 inside the bottom of the body 1, then install the two sealing rings 5 ​​on the two second nozzle cores 4. The function of the sealing rings 5 ​​is to prevent the leakage of molten plastic. Then, place one end of the two second nozzle cores 4 against the outer side of the first nozzle core 3, so that the second flow channel 12, the third flow channel 31, and the fourth flow channel are horizontally connected in sequence. The other end of the second nozzle core 4 is pressed against the inner wall outside the injection port of the mold through the sealing rings 5. Finally, place the cover plate 6 against the bottom surface of the two first nozzle cores 3, install one end of the locking member 7 on the cover plate 6, and install the other end of the locking member 7 on the body 1. The locking member 7 is a locking screw. Then, by rotating the locking member 7, the cover plate 6 and the body 1 are brought closer together to clamp and fix the first nozzle core 3. During operation, the plastic melt flows from the top to the bottom of the first flow channel 11. During the downward flow, the plastic melt will first collide with the inner wall of the bottom of the first flow channel 11, thereby achieving the purpose of buffering the flowing plastic melt. Then, it flows smoothly to the left and right sides to the second flow channels 12, and is injected into the molding cavity of the mold through the third flow channel 31 and the fourth flow channel 41 in sequence. The outer periphery of the sealing ring 5 can abut against the inner wall of the mold, thereby achieving the sealing function and preventing glue leakage. This application uses the body 1, the first flow channel 11, the second flow channel 12, the heating jacket 2, the first nozzle core 3, and the third flow channel. 31. The second nozzle core 4, the fourth flow channel 41, the sealing ring 5, the cover plate 6, and the locking element 7 are arranged such that the first flow channel 11 is perpendicular to the second flow channel 12, and the second flow channel 12, the third flow channel 31, and the fourth flow channel 41 are connected horizontally in sequence. This allows the plastic melt to flow to the bottom of the first flow channel 11 and first collide with the inner wall of the body 1 to buffer and reduce the flow force of the plastic melt. Then it flows smoothly to the second flow channel 12 and the third flow channel 31 on both sides and exits from the horizontally arranged fourth flow channel 41. Compared with the traditional inclined flow channel structure, the horizontally arranged flow channel can reduce the flow force of the plastic melt, thereby avoiding the nozzle core from being misaligned and leaking due to the force at the connection between the flow channels.

[0033] like Figure 1 and Figure 3 As shown, the main body 1 is provided with a mounting groove 13, and the mounting groove 13 is provided with a first inclined surface 14. The first nozzle 3 is placed in the mounting groove 13, and the first nozzle 3 is provided with a second inclined surface 32, which is attached to the first inclined surface 14. In this embodiment, during installation, two first nozzles 3 are placed in two mounting grooves 13, and one end of two second nozzles 4 is attached to the outer side of the first nozzle 3. The other end of the second nozzle 4 is pressed against the inner wall of the mold through a sealing ring 5. Then, the cover plate 6 and the locking member 7 are installed in sequence. During the process of twisting the locking member 7 to bring the cover plate 6 closer to the main body 1, under the action of the first inclined surface 14 and the second inclined surface 32, the first nozzle 3 will move outward and squeeze the second nozzle 4, thereby making the horizontal connection between the main body 1, the first nozzle 3 and the second nozzle 4 more compact and stable, and less prone to misalignment.

[0034] like Figure 2-4 As shown, the second nozzle core 4 includes a connecting block 42 and a dispensing head 43; one end of the connecting block 42 is provided with a dispensing port 421, the other end of the connecting block 42 is connected to one end of the dispensing head 43, the other end of the dispensing head 43 is provided with a dispensing port 434, one end of the dispensing port 421 is connected to the third flow channel 31, and the other end of the dispensing port 421 is connected to the dispensing port 434 through the fourth flow channel 41; the sealing ring 5 is installed on the outer periphery of the dispensing head 43, and the end of the sealing ring 5 abuts against the connecting block 42. In this embodiment, the connecting block 42 and the dispensing head 43 are an integral structure, and there are two dispensing ports 434. The fourth flow channel 41 is located inside the connecting block 42 and the dispensing head 43. The sealing ring 5 is fitted around the outer periphery of the dispensing head 43. One end of the sealing ring 5 abuts against the connecting block 42, and the other end abuts against the inner wall of the mold. During operation, the molten plastic flows sequentially through the first flow channel 11, the second flow channel 12, and the third flow channel 31, and then enters from the dispensing port 421 of the connecting block 42, and flows out through the fourth flow channel 41 from the two dispensing ports 434. Setting two dispensing ports 434 is beneficial to increasing the dispensing volume and improving the dispensing efficiency.

[0035] like Figure 3-4As shown, the dispensing head 43 includes a first fitting section 431, a second fitting section 432, and a third fitting section 433. One end of the second fitting section 432 is connected to the first fitting section 431, and the other end of the second fitting section 432 is connected to the third fitting section 433. The second fitting section 432 has a third inclined surface 4321, and the diameter of the first fitting section 431 is larger than the diameter of the third fitting section 433. In this embodiment, a three-section structure is used instead of the traditional flat cylindrical structure, so that the first fitting section 431, the second fitting section 432, and the third fitting section 433 respectively fit into the three corresponding inner walls of the sealing ring 5. This not only increases the friction after fitting but also increases the negative pressure inside the sealing ring 5, making it less likely for the sealing ring 5 to loosen or fall out after fitting.

[0036] like Figure 4-6 As shown, the inner circumference of the sealing ring 5 is provided with a first fitting surface 51, a second fitting surface 52, and a third fitting surface 53. The first fitting surface 51 can be fitted to the outer circumference of the first fitting segment 431, the second fitting surface 52 can be fitted to the third inclined surface 4321, and the third fitting surface 53 can be fitted to the outer circumference of the third fitting segment 433. In this embodiment, the first fitting surface 51 can be fitted to the outer circumference of the first fitting segment 431, the second fitting surface 52 can be fitted to the third inclined surface 4321, and the third fitting surface 53 can be fitted to the outer circumference of the third fitting segment 433, so that the first fitting surface 51 is adapted to the outer circumference of the first fitting segment 431, the second fitting surface 52 is adapted to the third inclined surface 4321, and the third fitting surface 53 is adapted to the outer circumference of the third fitting segment 433, ensuring the stability and reliability of the fitting.

[0037] like Figure 4-6 As shown, the sealing ring 5 has a first sealing surface 54 and a second sealing surface 55. The first sealing surface 54 is located outside the third mounting surface 53, and the first sealing surface 54 and the second sealing surface 55 are arranged perpendicularly. In this embodiment, the first sealing surface 54 on the outside of the sealing ring 5 is directly opposite to the third mounting surface 53 inside it, that is, the first sealing surface 54 is located outside the third mounting surface 53. The first sealing surface 54 and the second sealing surface 55 are arranged perpendicularly, and the first sealing surface 54 and the second sealing surface 55 respectively abut against the inner wall of the mold. The use of two sealing surfaces for sealing helps to improve the sealing performance of the sealing ring 5 and reduce the probability of glue leakage.

[0038] like Figure 5-6As shown, the outer periphery of the sealing ring 5 is provided with a plurality of limiting protrusions 56, which are evenly spaced along the circumferential direction of the sealing ring 5. In this embodiment, the number of limiting protrusions 56 is three, and the three limiting protrusions 56 are evenly spaced along the circumferential direction of the sealing ring 5. The three limiting protrusions 56 can abut against the inner wall of the mold, thereby achieving the purpose of limiting.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A heat nozzle with a buffer function, characterized in that: Includes the main body, heating jacket, first nozzle core, second nozzle core, sealing ring, cover plate and locking components; The main body is provided with a first flow channel and a second flow channel, the first flow channel is connected to one end of the second flow channel, and the first flow channel and the second flow channel are arranged perpendicularly. The first nozzle is placed on the body. The first nozzle has a third flow channel. One end of the third flow channel is connected to the other end of the second flow channel. The second nozzle is attached to the side of the first nozzle. The second nozzle has a fourth flow channel. The fourth flow channel is connected to the other end of the third flow channel. The fourth flow channel, the third flow channel and the second flow channel are respectively arranged horizontally. The heating sleeve is fitted around the outer periphery of the body, the sealing ring is installed on the second nozzle core, the cover plate abuts against the bottom surface of the first nozzle core, one end of the locking member is installed on the cover plate, and the other end of the locking member is installed on the body.

2. A hot nozzle with a buffer function according to claim 1, characterized in that: The main body is provided with a mounting groove, and the mounting groove is provided with a first inclined surface. The first nozzle is placed in the mounting groove, and the first nozzle is provided with a second inclined surface, which is attached to the first inclined surface.

3. A hot nozzle with a buffer function according to claim 1, characterized in that: The second nozzle core includes a connecting block and a dispensing head; One end of the connecting block is provided with a glue inlet, and the other end of the connecting block is connected to one end of the glue outlet head. The other end of the glue outlet head is provided with a glue outlet. One end of the glue inlet is connected to the third flow channel, and the other end of the glue inlet is connected to the glue outlet through the fourth flow channel. The sealing ring is installed on the outer periphery of the dispensing head, and the end of the sealing ring abuts against the connecting block.

4. A heat nozzle with a buffer function according to claim 3, characterized in that: The dispensing head includes a first set of sections, a second set of sections, and a third set of sections; One end of the second assembly segment is connected to the first assembly segment, and the other end of the second assembly segment is connected to the third assembly segment. The second assembly segment has a third inclined surface, and the diameter of the first assembly segment is larger than the diameter of the third assembly segment.

5. A hot nozzle with a buffer function according to claim 4, characterized in that: The inner circumference of the sealing ring is provided with a first fitting surface, a second fitting surface and a third fitting surface; The first fitting surface can be attached to the outer periphery of the first fitting segment, the second fitting surface can be attached to the third inclined surface, and the third fitting surface can be attached to the outer periphery of the third fitting segment.

6. A hot nozzle with a buffer function according to claim 5, characterized in that: The sealing ring is provided with a first sealing surface and a second sealing surface; The first sealing surface is located on the outside of the third set of surfaces, and the first sealing surface is perpendicular to the second sealing surface.

7. A heat nozzle with a buffer function according to claim 1, characterized in that: The outer periphery of the sealing ring is provided with multiple limiting protrusions, which are evenly spaced along the circumferential direction of the sealing ring.

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