Double-side glue feeding type hot nozzle

Abstract

The utility model relates to the technical field of hot runners, in particular to a double-side glue inlet type hot nozzle which comprises a hot nozzle body, and an expansion glue outlet assembly is arranged at the end of the hot nozzle body; the expanding glue outlet assembly comprises a hot nozzle sleeve arranged on the hot nozzle body in a sleeving manner, a connecting pipe is inserted into the hot nozzle sleeve, an inserting groove for inserting the hot nozzle body is formed in the end part of the connecting pipe, and a connecting flow channel communicated with the inserting groove is formed in the connecting pipe; the hot nozzle sleeve is in threaded connection with a connecting plate through a screw, the connecting plate is connected with an expansion sleeve through a screw, the expansion sleeve is provided with an abutting groove allowing a connecting pipe to be inserted therein, the bottom of the abutting groove is provided with a main flow channel, the side wall of the expansion sleeve is provided with a plurality of auxiliary flow channels communicated with the main flow channel, and the opening side of each auxiliary flow channel is in threaded connection with an auxiliary nozzle. On the basis that an original hot nozzle body structure is not replaced, molten materials are conveyed and sprayed out towards the two sides at the same time, and therefore the effect of the injection molding requirement is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of hot runners, and in particular to a dual-sided glue-inlet hot nozzle. Background Technology

[0002] Hot runner systems are heating systems used in injection molds to inject molten plastic particles into the mold cavity.

[0003] Currently, our company's hot runner system, such as patent publication number CN117507267B, is a high-temperature hot runner system, which includes a template, a main nozzle, a manifold, a hot runner plate, and several hot nozzle assemblies; the main nozzle has a first sealing end face and a second sealing end face respectively at both ends, and an injection channel penetrating the first sealing end face and the second sealing end face is provided on the main nozzle; a positioning element for mutual positioning and fixing is provided between the main nozzle and the manifold; and a hot runner communicating with the injection channel is provided on the manifold.

[0004] Regarding the aforementioned technologies, the inventors discovered that the hot nozzle assembly has only one nozzle, which means it can only inject plastic into one molding cavity. This makes it impossible to meet the requirement of simultaneous injection of plastic into multiple molding cavities, thus requiring a redesign and reprocessing of the corresponding hot nozzle structure, which in turn increases production costs. Utility Model Content

[0005] To solve the above-mentioned technical problems, this application provides a dual-sided hot nozzle, which has the advantage of simultaneously conveying and spraying molten material to both sides without changing the original hot nozzle body structure, thereby ensuring the injection molding requirements.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A dual-sided glue-infeed hot nozzle includes a hot nozzle body, and an extension glue-dispensing assembly is provided at the end of the hot nozzle body.

[0008] The expansion adhesive assembly includes a hot nozzle sleeve fitted on the hot nozzle body, a connecting tube inserted inside the hot nozzle sleeve, an insertion groove for the hot nozzle body to be inserted into at the end of the connecting tube, and a connecting flow channel communicating with the insertion groove inside the connecting tube.

[0009] A connecting plate is screwed onto the hot nozzle sleeve, and an expansion sleeve is screwed onto the connecting plate. The expansion sleeve is provided with an abutment groove for inserting a connecting tube. A main flow channel is provided at the bottom of the abutment groove. Several secondary flow channels communicating with the main flow channel are provided on the side wall of the expansion sleeve. A secondary nozzle is screwed onto the opening side of the secondary flow channel.

[0010] To achieve the above technical solution, after the hot nozzle body is inserted into the insertion slot, the molten material ejected from the hot nozzle body can be conveyed forward through the connecting channel in the connecting pipe; the molten material output from the connecting pipe can enter the insertion slot, then enter the main channel, and flow into the secondary channel. The opening side of the secondary channel is screwed with a secondary nozzle, so that the molten material in the secondary channel can also be ejected from the secondary nozzle. Thus, the molten material ejected from one hot nozzle body can be ejected from two secondary nozzles on the side, thereby achieving the simultaneous delivery and ejection of molten material to both sides without changing the original hot nozzle body structure, thus ensuring the effect required for injection molding.

[0011] As a preferred embodiment of this application, a sealing gasket is provided in the abutment groove.

[0012] The above technical solution ensures that after the connecting pipe is inserted into the abutment groove, the side wall of the connecting pipe is pressed tightly against the inner wall of the sealing gasket, thereby preventing the leakage of molten material.

[0013] As a preferred embodiment of this application, the secondary nozzle is provided with a downwardly inclined dispensing port.

[0014] The above technical solution enables the formation of an inclined cut during mold opening, thereby achieving the effect of automatic cutting of side injection.

[0015] As a preferred embodiment of this application, both the heating nozzle sleeve and the expansion sleeve are provided with heating resistance wires.

[0016] The above technical solution is achieved by heating the expansion sleeve and the hot nozzle sleeve with a heating resistance wire to ensure a molten state and prevent solidification due to low temperature, which could cause blockage.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. After the hot nozzle body is inserted into the insertion slot, the molten material ejected from the hot nozzle body can be conveyed forward through the connecting flow channel in the connecting pipe; the molten material output from the connecting pipe can enter the insertion slot, then enter the main flow channel, and flow into the secondary flow channel. The opening side of the secondary flow channel is screwed with a secondary nozzle, so that the molten material in the secondary flow channel can also be ejected from the secondary nozzle. Thus, the molten material ejected from one hot nozzle body can be ejected from two secondary nozzles on the side, thereby achieving the simultaneous delivery and ejection of molten material to both sides without changing the original hot nozzle body structure, thus ensuring the effect required for injection molding. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the application status of an embodiment of this application.

[0021] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application.

[0022] Figure 3 This is a schematic diagram of the structure of the extended adhesive assembly in the embodiments of this application.

[0023] Figure 4 This is an exploded view of an embodiment of this application.

[0024] Reference numerals: 1. Hot nozzle body; 2. Hot nozzle sleeve; 3. Connecting tube; 31. Insertion groove; 32. Connecting flow channel; 4. Connecting plate; 5. Expansion sleeve; 51. Abutment groove; 52. Main flow channel; 53. Secondary flow channel; 6. Secondary nozzle; 61. Dispensing port; 7. Sealing gasket; 8. Heating resistance wire. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0026] This application discloses a dual-sided glue-infeed hot nozzle. (Refer to...) Figure 1-4 A dual-sided glue-infeed hot nozzle includes a hot nozzle body 1, and an extension glue-dispensing component is provided at the end of the hot nozzle body 1.

[0027] The extended adhesive assembly includes a hot nozzle sleeve 2 fitted onto the hot nozzle body 1. A connecting tube 3 is inserted into the hot nozzle sleeve 2. The end of the connecting tube 3 is provided with an insertion groove 31 for the hot nozzle body 1 to be inserted into. A connecting flow channel 32 communicating with the insertion groove 31 is provided inside the connecting tube 3. This allows the hot nozzle body 1 to be inserted and abutted in the insertion groove 31, and the molten material sprayed from the hot nozzle body 1 can be conveyed forward through the connecting flow channel 32 in the connecting tube 3. A connecting plate 4 is screwed onto the hot nozzle sleeve 2, and an extension sleeve 5 is screwed onto the connecting plate 4. The extension sleeve 5 is provided with an abutment groove 51 for the insertion of the connecting tube 3. A main channel 52 is provided at the bottom of the abutment groove 51. Several secondary channels 53 communicating with the main channel 52 are provided on the side wall of the extension sleeve 5. In this application, there are two secondary channels 53, so that the molten material output from the connecting tube 3 can enter the abutment groove 51, then enter the main channel 52, and flow into the secondary channels 53. A secondary nozzle 6 is screwed onto the opening side of the secondary channel 53, so that the molten material in the secondary channel can also be ejected from the secondary nozzle 6. Thus, the molten material ejected from the hot nozzle body 1 can be ejected from the two secondary nozzles 6 on the side, thereby achieving the simultaneous delivery and ejection of molten material to both sides without changing the original hot nozzle body 1 structure, thus ensuring the effect required for injection molding.

[0028] To prevent leakage, a sealing gasket 7 is provided in the abutment groove 51, so that after the connecting pipe 3 is inserted into the abutment groove 51, the side wall of the connecting pipe 3 is pressed tightly against the inner wall of the sealing gasket 7, thereby preventing the molten material from leaking out.

[0029] The secondary nozzle 6 is provided with a downward-sloping outlet 61 so that an inclined cut is formed when the mold is opened, thereby achieving the effect of automatic cutting of side injection.

[0030] To prevent blockage of the main flow channel 52 and the secondary flow channel 53, heating resistance wires 8 are installed inside both the hot nozzle sleeve 2 and the expansion sleeve 5. The heating resistance wires 8 heat the expansion sleeve 5 and the hot nozzle sleeve 2 to ensure a molten state and prevent solidification due to low temperature, which could cause blockage.

[0031] The implementation principle of a dual-side injection nozzle according to an embodiment of this application is as follows: After the nozzle body 1 is inserted into the insertion groove 31, the molten material ejected from the nozzle body 1 can be conveyed forward through the connecting flow channel 32 in the connecting pipe 3. The molten material output from the connecting pipe 3 can enter the insertion groove 51, then enter the main flow channel 52, and flow into the secondary flow channel 53. The opening side of the secondary flow channel is screwed with a secondary nozzle 6, so that the molten material in the secondary flow channel can also be ejected from the secondary nozzle 6. Thus, the molten material ejected from one nozzle body 1 can be ejected from two secondary nozzles 6 on the side, thereby achieving the simultaneous delivery and ejection of molten material to both sides without changing the original nozzle body 1 structure, thus ensuring the desired injection molding effect.

[0032] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A double-sided glue-infeed hot nozzle, characterized in that: Includes a hot nozzle body (1), and the end of the hot nozzle body (1) is provided with an expansion adhesive assembly; The expansion adhesive assembly includes a hot nozzle sleeve (2) fitted on the hot nozzle body (1), a connecting tube (3) inserted inside the hot nozzle sleeve (2), an insertion groove (31) for the hot nozzle body (1) to be inserted into the end of the connecting tube (3), and a connecting flow channel (32) communicating with the insertion groove (31) inside the connecting tube (3). A connecting plate (4) is screwed onto the hot nozzle sleeve (2), and an extension sleeve (5) is screwed onto the connecting plate (4). The extension sleeve (5) is provided with an abutment groove (51) for the insertion of the connecting tube (3). A main channel (52) is provided at the bottom of the abutment groove (51). Several secondary channels (53) communicating with the main channel (52) are provided on the side wall of the extension sleeve (5). A secondary nozzle (6) is screwed onto the opening side of the secondary channel (53).

2. The double-sided glue-infeed hot nozzle according to claim 1, characterized in that: A sealing gasket (7) is provided in the abutment groove (51).

3. The double-sided glue-infeed hot nozzle according to claim 1, characterized in that: The secondary nozzle (6) is provided with a downwardly inclined dispensing port (61).

4. A double-sided glue-infeed hot nozzle according to claim 1, characterized in that: Heating resistance wires (8) are provided inside both the heating nozzle sleeve (2) and the expansion sleeve (5).

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