Hot nozzle structure capable of preventing glue from being hidden behind valve needle

Abstract

The invention relates to a hot nozzle structure capable of avoiding glue hiding on the back of a valve needle, relates to the technical field of hot runner molds, and aims to overcome the defect of poor injection molding finished product effect of a hot nozzle used in existing hot runner injection molding. The hot nozzle structure capable of avoiding glue hiding on the back of the valve needle comprises a splitter plate, a main sprue, a nozzle body, the valve needle and a flow guide shuttle, a first runner allowing rubber to circulate is arranged in the splitter plate, the main sprue is used for injecting molten rubber, the main sprue abuts against the first runner from the first surface of the splitter plate, the sprue body is arranged on the second surface of the splitter plate, a second runner is arranged in the sprue body and communicated with the first runner, a valve needle is arranged in the sprue body, and the valve needle is communicated with the valve needle. The valve needle penetrates through the nozzle body and the splitter plate, the flow guide shuttle is arranged on the valve needle in a sleeving manner, the flow guide shuttle comprises a cylindrical connecting part and a flow guide part arranged on the outer side wall of the connecting part, and the flow guide part is of a spiral structure and is used for improving the flowability of a sizing material.

Description

Technical Field

[0001] The present application relates to the technical field of hot runner molds, and in particular to a hot nozzle structure that can prevent glue from being hidden behind a valve needle. Background Art

[0002] With the continuous development of industrial manufacturing, injection molding technology is widely used in industrial manufacturing. At present, hot runner molds are mostly used in injection molding technology. After the molten rubber enters the mold from the rubber inlet, it flows to multiple hot nozzles through the manifold plate, and flows out through the hot nozzles for injection molding at the same time. In order to keep the rubber in a molten state in the mold, heating wires are arranged inside the manifold plate and around the hot nozzles. The manifold plate and the hot nozzles are continuously heated by the heating wires. A valve needle driven by a cylinder is arranged in the hot nozzle, which is used to close the hot nozzle opening through the valve needle when the injection molding needs to be stopped. , thereby blocking the outflow of the rubber material, but due to the setting of the valve needle, the rubber material will be blocked by the valve needle when flowing into the hot nozzle, causing the rubber material to be easily retained behind the valve needle. The rubber material retained behind the valve needle is carbonized due to long-term heating, and the carbonized rubber material is finally flushed out of the hot nozzle, which will affect the effect of the injection molded product. Moreover, when the rubber material needs to be replaced, the retained rubber material is hidden behind the valve needle, resulting in the retained rubber material being brought out when the new rubber material flows after the replacement of the rubber material. The two rubber materials mix and flow out, resulting in the injection molded product having the wrong color.

[0003] With respect to the above-mentioned related technologies, the hot nozzles used in the existing hot runner injection molding have the defect that the injection molding product effect is poor. Summary of the invention

[0004] The present application provides a hot nozzle structure which can avoid glue hiding behind a valve needle, so as to solve the defect that the hot nozzle used in the existing hot runner injection molding has poor injection molding product effect.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is to provide a hot nozzle structure that can prevent glue from being hidden behind the valve needle, and the hot nozzle structure that can prevent glue from being hidden behind the valve needle includes: A splitter plate is provided with a first flow channel allowing the rubber material to flow; A main nozzle, used for injecting the molten rubber material, wherein the main nozzle abuts against the first flow channel from the first surface of the diverter plate; A nozzle body is arranged on the second surface of the diverter plate, a second flow channel is arranged in the nozzle body, the second flow channel is communicated with the first flow channel, a valve needle is arranged in the nozzle body, and the valve needle penetrates the nozzle body and the diverter plate; A flow guide shuttle is sleeved on the valve needle, and comprises a connecting portion arranged in a cylindrical shape and a flow guide portion arranged on the outer side wall of the connecting portion, wherein the flow guide portion is arranged in a spiral structure to improve the fluidity of the rubber material.

[0006] By adopting the above technical solution, the guide shuttle is sleeved on the valve needle through the setting of the guide shuttle. When the melted rubber enters the diverter plate, the rubber flows downward through the guide part of the guide shuttle. Since the guide part is set as a spiral structure, the fluidity of the rubber is improved, and the rubber is prevented from hiding behind the valve needle, thereby improving the yield rate of the molded product.

[0007] Preferably, the hot nozzle structure capable of preventing the glue from being hidden behind the valve needle further comprises: The heating tube is arranged as a cylindrical structure, and the heating tube is sleeved on the nozzle body. An annular groove is further arranged on the outer peripheral side of the heating tube, and a heating wire is installed in the annular groove.

[0008] By adopting the above technical solution, through the setting of the heating cylinder, the emitting wire is set on the outer peripheral side of the heating cylinder, and the heating wire is used to heat and increase the temperature of the nozzle body to keep the rubber material in a molten state after entering the nozzle body.

[0009] Preferably, the hot nozzle structure capable of preventing the glue from being hidden behind the valve needle further comprises: The nozzle core is plugged and arranged at one end of the nozzle body away from the diverter plate, and the nozzle core is used for docking with the mold to facilitate the injection of the rubber material into the mold.

[0010] By adopting the above technical solution, the arrangement of the nozzle core facilitates the rubber material to flow out from the nozzle core, thereby allowing the rubber material to enter the mold to complete the injection molding.

[0011] Preferably, the hot nozzle structure capable of preventing the glue from being hidden behind the valve needle further comprises: The nozzle head is arranged in an annular structure and is plugged on the nozzle core, and is used to fix the nozzle core in the nozzle body to improve the stability of the nozzle core assembly.

[0012] By adopting the above technical solution, the nozzle head is arranged to improve the stability of the nozzle core assembly, thereby improving the safety of the product during molding and the yield rate of the finished product.

[0013] Preferably, the hot nozzle structure capable of preventing the glue from being hidden behind the valve needle further comprises: The heat insulation cap is arranged on the nozzle core at one end away from the diverter plate. The heat insulation cap is arranged as an annular plate structure with different radial dimensions at both ends. The radial dimension of the heat insulation cap close to the diverter plate is greater than the radial dimension of the heat insulation cap away from the diverter plate.

[0014] By adopting the above technical solution and setting the heat insulation cap, the influence of the temperature of the nozzle body on the mold is reduced when the nozzle body is close to the mold, thereby improving the safety of the mold and thus improving the safety and yield rate during injection molding.

[0015] Preferably, the hot nozzle structure capable of preventing the glue from being hidden behind the valve needle further comprises: An insert is arranged in the diverter plate, a connecting channel is arranged in the insert, the connecting channel is bent 90 degrees in the insert, the valve needle passes through the insert, and the guide shuttle is arranged in the insert.

[0016] By adopting the above technical solution, the arrangement of the insert facilitates the assembly of the guide shuttle in the diverter plate, while improving the convenience of maintaining the hot nozzle structure that can avoid glue hiding behind the valve needle.

[0017] Preferably, the hot nozzle structure capable of preventing the glue from being hidden behind the valve needle further comprises: A cylinder is arranged on one side of the first surface of the diverter plate, and is used to drive the valve needle to move.

[0018] By adopting the above technical solution, the cylinder is arranged to provide power support for the valve needle.

[0019] Preferably, the hot nozzle structure capable of preventing the glue from being hidden behind the valve needle further comprises: The heating wire is arranged in the diverter plate and is used to provide heat support for the diverter plate.

[0020] By adopting the above technical solution, the heating line is set to provide heat to the diverter plate, so that the rubber material maintains a molten state after entering the diverter plate.

[0021] The beneficial effect of the present application is that the hot nozzle structure provided by the present application can avoid the glue hiding behind the valve needle, and the setting of the guide shuttle avoids the glue hiding behind the valve needle, which leads to defects in the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them: Figure 1 It is a schematic cross-sectional view of a hot nozzle structure that can avoid glue hiding behind a valve needle, as provided in an embodiment of the present application.

[0023] Explanation of the reference numerals: 100, diverter plate; 101, main nozzle; 102, nozzle body; 103, valve needle; 110, flow guide shuttle; 111, connecting part; 112, flow guide part; 120, heating cylinder; 121, annular groove; 130, nozzle core; 140, nozzle head; 150, heat insulation cap; 160, insert. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), such directional indications are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0027] See also Figure 1As shown, the present application provides a hot nozzle structure that can avoid glue hiding behind the valve needle 103. The hot nozzle structure that can avoid glue hiding behind the valve needle 103 includes a diverter plate 100, a main nozzle 101, a nozzle body 102, a valve needle 103 and a guide shuttle 110. The diverter plate 100 is provided with a first flow channel that allows the flow of glue. The main nozzle 101 is used to inject the molten glue. The main nozzle 101 abuts against the first flow channel from the first surface of the diverter plate 100. The nozzle body 102 is provided on the second surface of the diverter plate 100. The nozzle body 102 is provided with a second flow channel, and the second flow channel is connected to the first flow channel. The nozzle body 102 is provided with a valve needle 103, and the valve needle 103 passes through the nozzle body 102. The guide shuttle 110 is arranged with the diverter plate 100 and is sleeved on the valve needle 103. The guide shuttle 110 includes a connecting portion 111 arranged in a cylindrical shape and a guide portion 112 arranged on the outer wall of the connecting portion 111. The guide portion 112 is arranged in a spiral structure to improve the fluidity of the rubber. The guide shuttle 110 is sleeved on the valve needle 103 by adopting the setting of the guide shuttle 110. When the molten rubber enters the diverter plate 100, the rubber flows downward through the guide portion 112 of the guide shuttle 110. Since the guide portion 112 is arranged in a spiral structure, the fluidity of the rubber is improved, and the rubber is prevented from hiding behind the valve needle 103, thereby improving the yield rate of the molded product.

[0028] The hot nozzle structure that can avoid the glue hiding behind the valve needle 103 also includes a heating tube 120. The heating tube 120 is set to a cylindrical structure. The heating tube 120 is sleeved on the nozzle body 102. An annular groove 121 is further provided on the outer peripheral side of the heating tube 120. A heating wire is installed in the annular groove 121. Through the setting of the heating tube 120, an emitting wire is set on the outer peripheral side of the heating tube 120. The heating wire is used to heat and increase the temperature of the nozzle body 102, so as to keep the rubber in a molten state after entering the nozzle body 102.

[0029] The hot nozzle structure that can avoid the glue hiding behind the valve needle 103 also includes a nozzle core 130. The nozzle core 130 is inserted and arranged at the end of the nozzle body 102 away from the diverter plate 100. The nozzle core 130 is used to connect with the mold to facilitate the injection of glue into the mold. The setting of the nozzle core 130 facilitates the glue to flow out of the nozzle core 130, so that the glue enters the mold to complete the injection molding.

[0030] The hot nozzle structure that can avoid glue hiding behind the valve needle 103 also includes a nozzle head 140. The nozzle head 140 is set to a ring structure and is plugged into the nozzle core 130 to fix the nozzle core 130 in the nozzle body 102 to improve the stability of the nozzle core 130 assembly. The nozzle head 140 is set to improve the stability of the nozzle core 130 assembly, thereby improving the safety of the product during molding and the yield rate of the finished product.

[0031] The hot nozzle structure that can avoid glue hiding behind the valve needle 103 also includes a heat insulation cap 150. The heat insulation cap 150 is arranged on the nozzle core 130 at one end away from the diverter plate 100. The heat insulation cap 150 is arranged as an annular plate structure with different radial dimensions at both ends. The radial dimension of the heat insulation cap 150 close to the diverter plate 100 is greater than the radial dimension of the heat insulation cap 150 away from the diverter plate 100. Through the arrangement of the heat insulation cap 150, the influence of the temperature of the nozzle body 102 on the mold is reduced when the nozzle body 102 is close to the mold, thereby improving the safety of the mold and thereby improving the safety and yield rate during injection molding.

[0032] The hot nozzle structure that can avoid glue hiding behind the valve needle 103 also includes an insert 160. The insert 160 is arranged in the diverter plate 100. A connecting channel is arranged in the insert 160. The connecting channel is bent 90 degrees in the insert 160. The valve needle 103 passes through the insert 160. The guide shuttle 110 is arranged in the insert 160. The arrangement of the insert 160 facilitates the assembly of the guide shuttle 110 in the diverter plate 100, and at the same time improves the convenience of maintaining the hot nozzle structure that can avoid glue hiding behind the valve needle 103.

[0033] The hot nozzle structure that can avoid glue hiding behind the valve needle 103 also includes a cylinder, which is arranged on one side of the first surface of the diverter plate 100. The cylinder is used to drive the valve needle 103 to move, and the valve needle 103 is provided with power support through the setting of the cylinder.

[0034] The hot nozzle structure that can avoid glue hiding behind the valve needle 103 also includes a heating wire. The heating wire is arranged in the diverter plate 100 to provide heat support for the diverter plate 100. The heating wire is set to provide heat for the diverter plate 100, so that the glue enters the diverter plate 100 and maintains a molten state.

[0035] In summary, the hot nozzle structure provided in the present application can prevent the glue from being hidden behind the valve needle 103, and the setting of the guide shuttle 110 prevents the glue from being hidden behind the valve needle 103, resulting in defects in the yield rate.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hot nozzle structure capable of preventing glue from being hidden behind a valve needle (103), characterized in that: The hot nozzle structure capable of preventing the glue from being hidden behind the valve needle (103) comprises: A flow divider (100) is provided with a first flow channel allowing the rubber material to flow; A main nozzle (101) is used for injecting the molten rubber material, the main nozzle (101) abutting against the first flow channel from the first surface of the diverter plate (100); A nozzle body (102) is arranged on the second surface of the diverter plate (100), a second flow channel is arranged in the nozzle body (102), the second flow channel is communicated with the first flow channel, a valve needle (103) is arranged in the nozzle body (102), and the valve needle (103) passes through the nozzle body (102) and the diverter plate (100); A flow guide shuttle (110) is sleeved on the valve needle (103), the flow guide shuttle (110) comprising a connecting portion (111) arranged in a cylindrical shape and a flow guide portion (112) arranged on an outer side wall of the connecting portion (111), the flow guide portion (112) being arranged in a spiral structure for improving the fluidity of the rubber material.

2. The hot nozzle structure capable of avoiding the glue hiding behind the valve needle (103) according to claim 1, characterized in that: The hot nozzle structure capable of preventing the glue from being hidden behind the valve needle (103) further comprises: The heating tube (120) is provided as a cylindrical structure, the heating tube (120) is sleeved on the nozzle body (102), an annular groove (121) is further provided on the outer peripheral side of the heating tube (120), and a heating wire is installed in the annular groove (121).

3. The hot nozzle structure capable of avoiding the glue hiding behind the valve needle (103) according to claim 1, characterized in that: The hot nozzle structure capable of preventing the glue from being hidden behind the valve needle (103) further comprises: The nozzle core (130) is inserted and arranged at one end of the nozzle body (102) away from the diverter plate (100), and the nozzle core (130) is used to connect with the mold to facilitate the injection of the rubber material into the mold.

4. The hot nozzle structure capable of avoiding the glue hiding behind the valve needle (103) according to claim 3 is characterized in that: The hot nozzle structure capable of preventing the glue from being hidden behind the valve needle (103) further comprises: The nozzle head (140) is arranged in an annular structure and is plugged onto the nozzle core (130), and is used to fix the nozzle core (130) in the nozzle body (102), thereby improving the assembly stability of the nozzle core (130).

5. The hot nozzle structure capable of avoiding the glue hiding behind the valve needle (103) according to claim 4 is characterized in that: The hot nozzle structure capable of preventing the glue from being hidden behind the valve needle (103) further comprises: A heat insulating cap (150) is arranged on the nozzle core (130) at one end away from the diverter plate (100), and the heat insulating cap (150) is arranged as an annular plate structure with different radial dimensions at both ends, and the radial dimension of the heat insulating cap (150) on the side close to the diverter plate (100) is greater than the radial dimension of the heat insulating cap (150) on the side away from the diverter plate (100).

6. The hot nozzle structure capable of avoiding the glue hiding behind the valve needle (103) according to claim 1, characterized in that: The hot nozzle structure capable of preventing the glue from being hidden behind the valve needle (103) further comprises: The insert (160) is arranged in the diverter plate (100), a connecting channel is arranged in the insert (160), the connecting channel is bent 90 degrees in the insert (160), the valve needle (103) passes through the insert (160), and the guide shuttle (110) is arranged in the insert (160).

7. The hot nozzle structure capable of avoiding the glue hiding behind the valve needle (103) according to claim 1, characterized in that: The hot nozzle structure capable of preventing the glue from being hidden behind the valve needle (103) further comprises: A cylinder, the cylinder being arranged on one side of the first surface of the diverter plate (100), the cylinder being used to drive the valve needle (103) to move.

8. The hot nozzle structure capable of avoiding the glue hiding behind the valve needle (103) according to claim 1, characterized in that: The hot nozzle structure capable of preventing the glue from being hidden behind the valve needle (103) further comprises: A heating wire is arranged in the diverter plate (100) and is used to provide heat support for the diverter plate (100).

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