Quick color changing hot runner

Abstract

The utility model relates to the technical field of hot runners, in particular to a quick color changing hot runner which comprises an injection nozzle, a splitter plate and a hot nozzle arranged on the splitter plate. A main runner communicated with the injection nozzle and a plurality of sub-runners communicated with the main runner are arranged in the splitter plate, and the sub-runners are communicated with the hot nozzle; the hot nozzle comprises a hot nozzle body, a TIP spreader is inserted into the end of the hot nozzle body, an injection channel communicated with an internal fluid channel of the hot nozzle body is arranged in the TIP spreader, a pressing sleeve used for fixing the TIP spreader is arranged on the hot nozzle body, and a color changing cap is arranged at the end of the TIP spreader. The hot runner structure has the effect that the appearance of residual glue in the hot runner can be reduced, so that the rapidness of color changing is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of hot runners, and in particular to a quick color-changing hot runner. Background Art

[0002] The hot runner systems currently used by our company to process laptop plastic parts have a lifespan of approximately 6 to 12 months. Once a model is shipped, the hot runners are no longer used. For plastic parts of different colors for the same model, multiple hot runner systems are required. This is because, when different-colored materials are injected into the current hot runner system, the system must be cleaned to remove the original color and allow the flow of the new color material. However, the current manifold runners, based on traditional rounded chamfers, have dead spots on the runner walls, which can easily trap glue.

[0003] To this end, our company has developed and applied for a diverter plate cleaning and color-changing structure with announcement number CN214645503U, which includes a fixed end connected to the diverter plate and a plug structure fixed by the fixed end. The plug structure is embedded in the diverter plate, and the bottom side is connected with an inclined surface at the flow channel corner of the diverter plate. The plug structure is connected to the inner nut of the fixed end through the upper thread, and the lower side of the flow channel is connected to the hot nozzle.

[0004] Regarding the above-mentioned related technologies, the inventors found that the end of the hot nozzle in the hot runner requires the internal pipe to gradually shrink to increase the injection pressure, which makes it very easy for the end of the hot nozzle to remain due to the shrinkage of the runner, resulting in residual color when changing colors. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a quick color-changing hot runner, which has the advantage of being able to reduce the occurrence of residual glue inside the hot runner, thereby ensuring the rapidity of color changing.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present utility model is as follows:

[0007] A quick color-changing hot runner comprises an injection nozzle, a diverter plate, and a hot nozzle arranged on the diverter plate; the diverter plate is provided with a main channel connected to the injection nozzle and a plurality of diverter channels connected to the main channel, and the diverter channels are connected to the hot nozzle;

[0008] The hot nozzle includes a hot nozzle body, a TIP diverter shuttle is inserted into the end of the hot nozzle body, an injection channel is provided inside the TIP diverter shuttle and is connected to the internal fluid channel of the hot nozzle body, a pressing sleeve is provided on the hot nozzle body for fixing the TIP diverter shuttle, and a color changing cap is provided at the end of the TIP diverter shuttle.

[0009] To implement the above technical solution, that is, after the TIP diverter shuttle is fixed to the hot nozzle body by a press sleeve, the injection channel in the TIP diverter shuttle is connected to the fluid channel inside the hot nozzle body. Since the connection between the TIP diverter shuttle and the hot nozzle body is only abutment and there is no other structure, it can be mirror polished after wire cutting to ensure the tightness of the connection between the injection channel and the hot nozzle body, thereby preventing the occurrence of gaps and residual glue; and the TIP diverter shuttle has good thermal conductivity and a smooth surface, thereby ensuring that there will be no drawing during injection, thereby preventing the occurrence of residual glue.

[0010] As a preferred solution of the present application, a heating copper sleeve is provided on the hot nozzle body.

[0011] By implementing the above technical solution, the colloid in the hot nozzle body can be heated and softened by the heated copper sleeve, thereby improving the fluidity of the colloid and facilitating the rapid discharge of the rubber.

[0012] As a preferred solution of the present application, the inner hole of the hot nozzle body is provided with a nano anti-sticking coating.

[0013] The above technical solution is implemented to prevent the occurrence of adhesive adhesion, thereby achieving the effect of rapid color change.

[0014] As a preferred solution of the present application, the diverter plate is provided with a valve needle mechanism inserted in the hot nozzle, the valve needle mechanism includes a valve needle inserted in the hot nozzle body, and a drive block for fixing the valve needle, a positioning groove is provided at the end of the drive block, a positioning cap is provided at the end of the valve needle, and a positioning block is screwed between the positioning cap and the positioning groove.

[0015] To implement the above technical solution, after the driving block is fixed on the template of the hot runner, it moves with the template, thereby driving whether the valve needle is inserted into the hot nozzle body for sealing; a positioning block is screwed on the valve needle between the positioning cap and the bottom wall of the positioning groove, that is, the position of the positioning block on the valve needle can be adjusted, thereby adjusting the position of the valve needle extending into the end of the hot nozzle body, so that when changing colors, the valve needle position can be adjusted to facilitate the discharge of the rubber, thereby achieving the effect of rapid color change.

[0016] As a preferred solution of the present application, a heating jacket is provided on the injection nozzle.

[0017] To implement the above technical solution, the colloid in the injection nozzle can be heated and softened by the heated copper sleeve, thereby improving the fluidity of the colloid, so as to facilitate the rapid discharge of the rubber material, thereby achieving the effect of rapid color change.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] After the TIP diverter shuttle is fixed to the hot nozzle body by means of a press sleeve, the injection channel in the TIP diverter shuttle is connected to the fluid channel inside the hot nozzle body. Since the connection between the TIP diverter shuttle and the hot nozzle body is only abutted without other structures, it can be mirror polished after wire cutting to ensure the tightness of the connection between the injection channel and the hot nozzle body, thereby preventing the occurrence of residual glue in the gap. The TIP diverter shuttle has good thermal conductivity and a smooth surface, which ensures that there will be no drawing during injection, thereby preventing the occurrence of residual glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is an overall structural diagram of an embodiment of the present application.

[0022] Figure 2 It is a structural schematic diagram of the hot nozzle body in the embodiment of the present application.

[0023] Figure 3 yes Figure 2 Enlarged view of part A.

[0024] Figure numerals: 1. Injection nozzle; 2. Diverter plate; 21. Main channel; 22. Diverter channel; 3. Hot nozzle; 31. Hot nozzle body; 32. TIP diverter shuttle; 33. Press sleeve; 34. Color-changing cap; 35. Heating copper sleeve; 4. Valve needle mechanism; 41. Valve needle; 42. Positioning cap; 43. Drive block; 44. Locking cap; 45. Positioning block; 6. Heating sleeve. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-3 This application is described in further detail.

[0026] The embodiment of the present application discloses a quick color change hot runner. Figure 1The quick color-changing hot runner includes an injection nozzle 1, a diverter plate 2, and a hot nozzle 3 provided on the diverter plate 2; the diverter plate 2 is provided with a main channel 21 connected to the injection nozzle 1 and a plurality of diverter channels 22 connected to the main channel 21, and the diverter channels 22 are connected to the hot nozzle 3. The diverter channel 22 is bent and provided with a diverter plate 2 cleaning and color-changing structure developed by our company in the background technology to prevent the formation of eddy currents and glue accumulation in the bend of the diverter channel 22, resulting in residual color after color change. A fluid channel is provided in the injection nozzle 1, and the diameter of the fluid channel is the same as that of the main channel 21, thereby preventing glue from accumulating at the connection between the injection nozzle 1 and the diverter plate 2, thereby reducing the occurrence of residual color during color change.

[0027] The hot nozzle 3 comprises a nozzle body, with a TIP shuttle 32 inserted into the end of the nozzle body. The TIP shuttle 32 houses an injection channel connected to the fluid channel within the nozzle body. A compression sleeve 33 is provided on the nozzle body to secure the TIP shuttle 32, and a color-changing cap 34 is attached to the end of the TIP shuttle 32. After the TIP shuttle 32 is secured to the nozzle body via the compression sleeve 33, the injection channel in the TIP shuttle 32 communicates with the fluid channel within the nozzle body. Because the connection between the TIP shuttle 32 and the nozzle body is merely abutment, with no other structure, the TIP shuttle 32 can be mirror-polished after wire cutting to ensure a tight connection between the injection channel and the nozzle body, preventing gaps and the formation of residual adhesive. The TIP shuttle 32 also offers excellent thermal conductivity and a smooth surface, ensuring that glue is injected without stringing, thus preventing the formation of residual adhesive.

[0028] The hot nozzle 3 is fitted with a heating copper sleeve 35, which softens the colloid inside the nozzle 3, improving its fluidity and facilitating rapid discharge. A nano-anti-stick coating is applied to the inner pores of the nozzle 3 to prevent the colloid from sticking, enabling rapid color changes. This further prevents colloid from adhering to the nozzle 3, preventing residual glue from slowing color changes.

[0029] The manifold 2 is provided with a valve needle 41 mechanism 4 inserted into the hot nozzle 3. The valve needle 41 mechanism 4 includes a valve needle 41 inserted into the hot nozzle 3 body and a drive block 43. The drive block 43 has a positioning groove at its end, and a positioning cap 42 at its end. The positioning groove is provided with a locking cap 44 for pressing the positioning cap 42 into the positioning groove. This locks the end of the valve needle 41 to the driving block 43 by the locking cap 44, allowing it to move with the driving block 43. Specifically, after the driving block 43 is fixed to the hot runner template, it moves with the template, thereby driving the valve needle 41 to insert into the hot nozzle 3 body for sealing. A positioning block 45 is screwed onto the valve needle 41 between the positioning cap 42 and the bottom wall of the positioning groove. By adjusting the positioning block 45 on the valve needle 41, the position of the valve needle 41 extending into the end of the hot nozzle 3 body can be adjusted. This allows the position of the valve needle 41 to be adjusted during color changes to facilitate rubber discharge, thereby achieving a rapid color change effect.

[0030] The injection nozzle 1 is provided with a heating sleeve, that is, the colloid in the injection nozzle 1 can be heated and softened by the heating sleeve 6, thereby improving the fluidity of the colloid, so as to facilitate the rapid discharge of the rubber material, thereby achieving the effect of rapid color change.

[0031] The implementation principle of a quick color-changing hot runner in the embodiment of the present application is as follows: after the TIP diverter shuttle 32 is fixed to the hot nozzle 3 body by the pressing sleeve 33, the injection channel in the TIP diverter shuttle 32 is connected to the fluid channel inside the hot nozzle 3 body. Since the connection between the TIP diverter shuttle 32 and the hot nozzle 3 body is only abutted and has no other structure, it can be mirror-polished after wire cutting to ensure the tightness of the connection between the injection channel and the hot nozzle 3 body, thereby preventing the occurrence of residual glue in the gap; and the TIP diverter shuttle 32 has good thermal conductivity and a smooth surface, thereby ensuring that there will be no drawing during injection, thereby preventing the occurrence of residual glue.

[0032] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A quick color change hot runner, characterized by: The invention comprises an injection nozzle (1), a diverter plate (2), and a hot nozzle (3) arranged on the diverter plate (2); the diverter plate (2) is provided with a main channel (21) communicating with the injection nozzle (1) and a plurality of diverter channels (22) communicating with the main channel (21); the diverter channels (22) are in communication with the hot nozzle (3); The hot nozzle (3) comprises a hot nozzle (3) body, a TIP diverter shuttle (32) is inserted into the end of the hot nozzle (3) body, an injection channel is provided inside the TIP diverter shuttle (32) and is connected to the internal fluid channel of the hot nozzle (3) body, a pressing sleeve (33) is provided on the hot nozzle (3) body for fixing the TIP diverter shuttle (32), and a color changing cap (34) is provided at the end of the TIP diverter shuttle (32).

2. The quick color change hot runner according to claim 1, characterized in that: The hot nozzle (3) body is sleeved with a heating copper sleeve (35).

3. The quick color change hot runner according to claim 1, characterized in that: The inner hole of the hot nozzle (3) body is provided with a nano anti-adhesion coating.

4. The quick color change hot runner according to claim 1, characterized in that: The diverter plate (2) is provided with a valve needle (41) mechanism (4) inserted into the hot nozzle (3), and the valve needle (41) mechanism (4) includes a valve needle (41) inserted into the hot nozzle (3) body, and a drive block (43) for fixing the valve needle (41), the end of the drive block (43) is provided with a positioning groove, the end of the valve needle (41) is provided with a positioning cap (42), and a positioning block (45) is screwed between the positioning cap (42) and the positioning groove.

5. The quick color change hot runner according to claim 1, characterized in that: The injection nozzle (1) is provided with a heating jacket (6).

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