Tungsten alloy nozzle bushing

Abstract

The utility model discloses a tungsten alloy sprue bush belongs to injection molding tool technical field, including sprue bush body, sprue bush body includes shell and the inner tube of setting in the shell, and the inner tube includes the main pipe of setting in the shell inside, and the main pipe top end fixed mounting has the mounting panel, and the shell top end inner wall has set up the recess that is matched with the mounting panel, and is fixed through the first bolt between the mounting panel and the shell. The utility model discloses in the sprue bush body has shell and inner tube assembly component, and the injection molding material is with through the inner tube and enters the inside of injection molding device, and therefore injection molding material only contacts the inner tube and produces the friction, when the inner tube appears the damage, only needs to replace the inner tube, need not to replace the sprue bush body completely, has reduced the waste of partial material.

Description

Technical Field

[0001] This utility model relates to the field of injection molding tool technology, and more specifically, to a tungsten alloy sprue sleeve. Background Technology

[0002] An injection molding machine is a machine that extrudes molten material. The discharge port of the injection molding machine needs to be equipped with a sprue sleeve. The end of the sprue sleeve away from the injection molding machine is inserted into the mold, so that the material produced by the injection molding machine can be pressed into the mold and formed.

[0003] In some existing integrated gating sleeve designs, friction may occur between the molten material and the inner wall of the gating sleeve after it enters, requiring periodic replacement of the gating sleeve and resulting in material loss. Therefore, we propose a tungsten alloy gating sleeve. Utility Model Content

[0004] To solve the above problems, this utility model provides a tungsten alloy gating sleeve, which adopts the following technical solution:

[0005] A tungsten alloy sprue bushing includes a sprue bushing body, the sprue bushing body includes an outer shell and an inner tube disposed within the outer shell, the inner tube includes a main tube disposed inside the outer shell, an mounting plate is fixedly installed at the top of the main tube, a groove matching the mounting plate is formed on the inner wall of the top of the outer shell, and the mounting plate and the outer shell are fixed together by a first bolt.

[0006] By adopting the above technical solution, the sprue bushing body is assembled from an outer shell and an inner tube. The inner tube consists of a main pipe and a mounting plate. The inner wall of the outer shell has a groove that matches the mounting plate. The mounting plate and the outer shell are fixed together by a first bolt, which serves to assemble and fix the outer shell and the inner tube. The injection molding material enters the injection molding device through the inner tube. Therefore, the injection molding material only comes into contact with the inner tube and generates friction. When the inner tube is damaged, only the inner tube needs to be replaced, without replacing the entire sprue bushing body, thus reducing the waste of some materials. Moreover, the sprue bushing body is made of uranium alloy, which has good wear resistance and high temperature resistance, effectively improving the performance of the equipment.

[0007] Furthermore, multiple insert blocks arranged in a circular array are fixedly installed at the bottom of the mounting plate, and slots matching the insert blocks are provided on the inner wall of the bottom of the groove.

[0008] By adopting the above technical solution, the bottom of the mounting plate is provided with a plug. When the mounting plate engages with the groove on the top of the outer shell, the plug installed at the bottom of the mounting plate engages with the slot on the inner wall of the groove, which serves to position the mounting plate and facilitates subsequent fixing.

[0009] Furthermore, multiple limiting blocks arranged in a circular array are fixedly installed on the inner wall of the inner tube, and limiting grooves matching the limiting blocks are opened on the inner wall of the outer shell.

[0010] By adopting the above technical solution, when the staff places the inner tube inside the outer shell, the limiting block set on the outer side of the inner tube engages with the limiting groove opened on the inner wall of the outer shell. The engagement of the limiting block and the limiting groove plays a role in positioning the inner tube, which helps to maintain the stability of the assembly of the outer shell and the inner tube.

[0011] Furthermore, a sealing plate is provided at the bottom of the sprue bushing body, and the sealing plate and the sprue bushing body are fixed together by a second bolt.

[0012] By adopting the above technical solution, a sealing plate is provided at the bottom of the sprue bushing body. The sealing plate and the sprue bushing body are fixed by a second bolt. The sealing plate can prevent the injection molding material from directly contacting the bottom of the sprue bushing body, thereby achieving the effect of protecting the sprue bushing body. In addition, the second bolt is screwed into the grooves opened at the bottom of the outer shell and the bottom of the inner tube, which helps to improve the stability of the assembly of the outer shell and the inner tube.

[0013] Furthermore, the top of the sealing plate is provided with a plurality of first positioning rods arranged in a circular array, the bottom of the outer shell is provided with a first positioning groove that matches the first positioning rods, the top of the sealing plate is fixedly installed with a plurality of second positioning rods arranged in a circular array, and the bottom of the inner tube is provided with a second positioning groove that matches the second positioning rods.

[0014] By adopting the above technical solution, the top of the sealing plate is provided with multiple first positioning rods and second positioning rods. The first positioning rods engage with the first positioning groove opened at the bottom of the outer shell, and the second positioning rods engage with the second positioning groove opened at the bottom of the inner tube. This can play the role of positioning the sealing plate. Furthermore, through the cooperation of the first positioning rods, the second positioning rods, the first positioning groove, and the second positioning groove, the outer shell and the inner tube are restricted and positioned.

[0015] Furthermore, a first sealing gasket is provided at the top of the sealing plate, and a second sealing gasket is provided on the inner wall of the bottom end of the groove.

[0016] By adopting the above technical solution, a first sealing gasket is provided on the top of the sealing plate, which helps to increase the precision of the fit between the sealing plate and the sprue sleeve body, and a second sealing gasket is provided on the inner wall of the groove, which helps to increase the tightness of the fit between the mounting plate and the outer shell.

[0017] In summary, this utility model has the following beneficial technical effects:

[0018] (1) In this utility model, the sprue bushing body has an outer shell and an inner tube assembly. The injection molding material enters the injection molding device through the inner tube. Therefore, the injection molding material only comes into contact with the inner tube and generates friction. When the inner tube is damaged, only the inner tube needs to be replaced. There is no need to replace the entire sprue bushing body, which reduces the waste of some materials.

[0019] (2) In this utility model, a sealing plate is provided at the bottom of the sprue sleeve body, which plays a role in protecting the bottom of the sprue sleeve body, which helps to avoid direct contact between the injection molding material and the bottom of the outer shell, and helps to reduce the damage to the sprue sleeve body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the tungsten alloy gating sleeve of this utility model;

[0021] Figure 2 This is a bottom view of the tungsten alloy gating sleeve of this utility model;

[0022] Figure 3 This is a cross-sectional view of the tungsten alloy gating sleeve of this utility model;

[0023] Figure 4 This utility model relates to a tungsten alloy gating sleeve. Figure 3 Enlarged view of A in the middle;

[0024] Figure 5 This utility model relates to a tungsten alloy gating sleeve. Figure 3 A magnified view of B in the middle.

[0025] Explanation of the labels in the diagram:

[0026] 1. Sprue bushing body; 11. Outer shell; 12. Inner tube; 121. Mounting plate; 122. Main tube; 1221. Limiting block; 2. Sealing plate; 21. First positioning rod; 22. Second positioning rod. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below.

[0031] Please see Figure 1-5 A tungsten alloy sprue bushing includes a sprue bushing body 1. The sprue bushing body 1 includes an outer shell 11 and an inner tube 12 disposed within the outer shell 11. The inner tube 12 includes a main tube 122 disposed inside the outer shell 11. A mounting plate 121 is fixedly installed at the top end of the main tube 122. A groove matching the mounting plate 121 is formed on the inner wall of the top end of the outer shell 11. The mounting plate 121 and the outer shell 11 are fixed together by a first bolt. The sprue bushing body 1 is assembled from the outer shell 11 and the inner tube 12. The inner tube 12 is composed of the main tube 122 and the mounting plate 121. The inner wall of the outer shell 11 is provided with a groove matching the mounting plate 121. The matching groove of 121 and the mounting plate 121 are fixed to the outer shell 11 by the first bolt, which can serve to assemble and fix the outer shell 11 and the inner tube 12. The injection material enters the injection device through the inner tube 12. Therefore, the injection material only comes into contact with the inner tube 12 and generates friction. When the inner tube 12 is damaged, only the inner tube 12 needs to be replaced. There is no need to replace the entire sprue bushing body 1, which reduces the waste of some materials. Moreover, the sprue bushing body 1 is made of uranium alloy, which has good wear resistance and high temperature resistance, which can effectively improve the use effect of the equipment.

[0032] Multiple insert blocks arranged in a circular array are fixedly installed at the bottom of the mounting plate 121. The inner wall of the bottom of the groove is provided with a slot that matches the insert blocks. The bottom of the mounting plate 121 is provided with insert blocks. When the mounting plate 121 is engaged with the groove on the top of the outer shell 11, the insert blocks installed at the bottom of the mounting plate 121 are engaged with the slots on the inner wall of the groove, which serves to position the mounting plate 121 and facilitate subsequent fixing.

[0033] Multiple limiting blocks 1221 arranged in a ring array are fixedly installed on the inner wall of the inner tube 12. The inner wall of the outer shell 11 is provided with a limiting groove that matches the limiting blocks 1221. When the operator places the inner tube 12 inside the outer shell 11, the limiting blocks 1221 on the outer side of the inner tube 12 engage with the limiting groove on the inner wall of the outer shell 11. The engagement of the limiting blocks 1221 and the limiting groove serves to position the inner tube 12, which helps to maintain the stability of the assembly of the outer shell 11 and the inner tube 12.

[0034] The bottom of the sprue sleeve body 1 is provided with a sealing plate 2, which is fixed to the sprue sleeve body 1 by a second bolt. The sealing plate 2 can prevent the injection molding material from directly contacting the bottom of the sprue sleeve body 1, thus achieving the effect of protecting the sprue sleeve body 1. In addition, the second bolt is screwed into the grooves opened at the bottom end of the outer shell 11 and the bottom end of the inner tube 12, which helps to improve the stability of the assembly of the outer shell 11 and the inner tube 12.

[0035] The top of the sealing plate 2 is provided with a plurality of first positioning rods 21 arranged in a circular array. The bottom of the outer shell 11 is provided with a first positioning groove that matches the first positioning rods 21. The top of the sealing plate 2 is fixedly installed with a plurality of second positioning rods 22 arranged in a circular array. The bottom of the inner tube 12 is provided with a second positioning groove that matches the second positioning rods 22. The top of the sealing plate 2 is provided with a plurality of first positioning rods 21 and second positioning rods 22. The first positioning rods 21 engage with the first positioning groove at the bottom of the outer shell 11, and the second positioning rods 22 engage with the second positioning groove at the bottom of the inner tube 12. This can serve to position the sealing plate 2. Furthermore, through the cooperation of the first positioning rods 21, the second positioning rods 22, the first positioning groove, and the second positioning groove, the sealing plate 2 can be positioned to restrict and limit the outer shell 11 and the inner tube 12.

[0036] The top of the sealing plate 2 is provided with a first sealing gasket, and the inner wall of the bottom of the groove is provided with a second sealing gasket. The first sealing gasket on the top of the sealing plate 2 helps to increase the precision of the fit between the sealing plate 2 and the sprue sleeve body 1, and the second sealing gasket on the inner wall of the groove helps to increase the tightness of the fit between the mounting plate 121 and the outer shell 11.

[0037] The implementation principle of this utility model embodiment is as follows: the sprue sleeve body 1 is assembled from an outer shell 11 and an inner tube 12. The inner tube 12 is composed of a main tube 122 and a mounting plate 121. The inner wall of the outer shell 11 is provided with a groove that matches the mounting plate 121. The mounting plate 121 and the outer shell 11 are fixed together by a first bolt, which can serve to assemble and fix the outer shell 11 and the inner tube 12. The injection molding material enters the injection molding device through the inner tube 12. Therefore, the injection molding material only comes into contact with the inner tube 12 and generates friction. When the inner tube 12 is damaged, only the inner tube 12 needs to be replaced. There is no need to replace the entire sprue sleeve body 1, which reduces the waste of some materials. Moreover, the sprue sleeve body 1 is made of uranium alloy, which has good wear resistance and high temperature resistance, which can effectively improve the use effect of the equipment.

[0038] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A tungsten alloy gating sleeve, characterized in that: The sprue includes a sprue sleeve body (1), which includes an outer shell (11) and an inner tube (12) disposed inside the outer shell (11). The inner tube (12) includes a main tube (122) disposed inside the outer shell (11). An mounting plate (121) is fixedly installed on the top end of the main tube (122). A groove matching the mounting plate (121) is opened on the inner wall of the top end of the outer shell (11). The mounting plate (121) and the outer shell (11) are fixed together by a first bolt.

2. The tungsten alloy gating sleeve according to claim 1, characterized in that: The mounting plate (121) has a plurality of insert blocks arranged in a ring array at its bottom end, and the inner wall of the bottom end of the groove has a slot that matches the insert blocks.

3. The tungsten alloy gating sleeve according to claim 1, characterized in that: The inner tube (12) has multiple limiting blocks (1221) arranged in a ring array fixedly installed on its inner wall, and the outer shell (11) has a limiting groove that matches the limiting blocks (1221) on its inner wall.

4. The tungsten alloy gating sleeve according to claim 1, characterized in that: The bottom of the sprue sleeve body (1) is provided with a sealing plate (2), and the sealing plate (2) and the sprue sleeve body (1) are fixed together by a second bolt.

5. A tungsten alloy gating sleeve according to claim 4, characterized in that: The top of the sealing plate (2) is provided with a plurality of first positioning rods (21) arranged in a ring array. The bottom of the outer shell (11) is provided with a first positioning groove that matches the first positioning rods (21). The top of the sealing plate (2) is fixedly installed with a plurality of second positioning rods (22) arranged in a ring array. The bottom of the inner tube (12) is provided with a second positioning groove that matches the second positioning rods (22).

6. A tungsten alloy gating sleeve according to claim 4, characterized in that: The top of the sealing plate (2) is provided with a first sealing gasket, and the inner wall of the bottom of the groove is provided with a second sealing gasket.

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