Novel main inlet nozzle

Abstract

The utility model belongs to the technical field of injection molds, in particular relates to a novel main inlet nozzle, and solves the problem that the connection between an inlet nozzle main body and a splitter plate can not be released easily. The novel main inlet nozzle is arranged on a splitter plate and comprises a base and an inlet nozzle main body detachably arranged on the base, the base is detachably fixed on the splitter plate, and a feeding channel communicated with a main runner through a feeding through hole of the splitter plate is arranged in the inlet nozzle main body. The inlet nozzle body is detachably arranged on the splitter plate through the base, the inlet nozzle body and the base are detachably connected, the base and the splitter plate are detachably connected, the detachability of the inlet nozzle body relative to the splitter plate is guaranteed, and follow-up replacement and maintenance are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to injection mold technical field, especially relates to a novel main nozzle. BACKGROUND

[0002] Injection molding is a production process widely used in modern industrial production, which makes the required plastic products through a series of operations such as pressurization, injection, cooling, etc. The whole process is usually realized by an injection molding machine. In the injection molding process, the material enters the hot runner system in the injection mold through the main nozzle, so as to inject the material into the cavity of the mold. The common hot runner system usually has a distribution plate, which is the central component of the whole hot runner system, and one side is used to connect the main nozzle of the injection molding machine.

[0003] In the prior art, the connection between the main nozzle and the distribution plate is usually directly connected by threads. Although this connection is convenient and less likely to leak, the threads required for sealing are usually fine, and after a period of use, the threads between the main nozzle body and the distribution plate are easily locked, making it impossible to remove. In this case, the only way to reprocess is through machining, which inevitably increases the cost of equipment maintenance. UTILITY MODEL CONTENT

[0004] The utility model aims at the above problems existing in the prior art and provides a novel main nozzle.

[0005] To achieve the purpose of the utility model, the following technical solutions can be used:

[0006] A novel main nozzle is arranged on a distribution plate and includes a base and a nozzle body detachably arranged on the base. The base is detachably fixed to the distribution plate, and the nozzle body is provided with a feeding channel communicating with a main runner through a feeding hole of the distribution plate.

[0007] The nozzle body of the utility model is arranged on the distribution plate through the base, and the nozzle body and the base, as well as the distribution plate and the nozzle body, are detachably connected, which is convenient to disassemble and assemble, and the corresponding connection positions are not communicated with the feeding channel, i.e. not directly contacted with the material, effectively ensuring the service life of the connection structure.

[0008] In the novel main nozzle, the base is provided with a body connecting screw hole, and the threaded section at the lower end of the nozzle body is engaged in the body connecting screw hole.

[0009] The body connecting screw hole is vertically provided on the base, and the threaded section of the nozzle body is screwed in the body connecting screw hole, realizing stable detachable fixed connection.

[0010] In the above-mentioned novel main inlet nozzle, the inlet nozzle body includes a main body section and a threaded section, the outer diameter of the threaded section is smaller than that of the main body section, and the lower end surface of the main body section abuts against the base.

[0011] The outer diameter of the main body section is larger than that of the threaded section. After the threaded section is fully screwed in, the lower end surface of the main body section is in contact with the base, which has a positioning effect on the one hand. On the other hand, the relative surfaces of the main body section and the base are in close contact, which can effectively prevent the relative rotation of the nozzle body and the base and prevent loosening. In addition, there is also good sealing between the main body section and the base.

[0012] In the above-mentioned novel main inlet, a wedge-type locking and anti-loosening double-stack washer is sleeved on the threaded section, and the upper and lower end faces of the wedge-type locking and anti-loosening double-stack washer are tightly attached to the main section and the base respectively.

[0013] To further prevent relative rotation between the nozzle body and the base, a wedge-type locking and anti-loosening double-stack washer is installed between the opposing surfaces of the main body and the base. This wedge-type locking and anti-loosening double-stack washer is clamped, effectively preventing the nozzle body from loosening. The wedge-type locking and anti-loosening double-stack washer is common knowledge and will not be elaborated on in detail.

[0014] In the above-mentioned novel main inlet, at least three connection holes are distributed on the base along the circumference of the inlet body, and the connection bolts pass through the connection holes and engage with the connection screw holes on the base of the diverter plate.

[0015] Connecting bolts are threaded through the connection holes in the base and screwed into the base connection screw holes on the manifold, securing the base to the manifold. This provides a simple structure, good fixing, and detachability. As an optimization, the thread of the connecting bolts is coarse, which is adapted to the base connection screw holes, reducing the possibility of gnashing.

[0016] In the above-mentioned novel main inlet, the base is square, and four connecting holes are provided, which are respectively located at the four corners of the base.

[0017] The base is preferably square in shape, with connection holes distributed on the four corners, so that the force is evenly distributed and the fixing effect is good.

[0018] In the above-mentioned new main inlet, an annular concave stop is provided on the outer port of the feed through hole, and an annular convex stop is provided at the lower end of the inlet body, and the annular convex stop is just stuck in the annular concave stop.

[0019] The annular convex stop of the nozzle body is just stuck in the annular convex stop, which has a good positioning effect on the nozzle body on the one hand, and on the other hand, a good seal can be formed between the annular concave stop and the annular convex stop to avoid leakage.

[0020] In the above-mentioned new main inlet nozzle, the lower end surface of the annular convex stop and / or the upper end surface of the annular concave stop are provided with an annular groove, and a deformable metal ring is provided in the annular groove, and the deformable metal ring is pressed between the annular concave stop and the annular convex stop.

[0021] A deformable metal ring is positioned between the opposing surfaces of the annular male and female flanges. This metal ring adaptively deforms after axial compression and has a tendency to recover, compensating for gap errors between the lower end of the nozzle body and the base, while also ensuring a good seal between the male and female flanges. The deformable metal ring is common knowledge and will not be elaborated on in detail.

[0022] In the above-mentioned novel main inlet nozzle, a first guiding slope is provided on the upper peripheral edge of the annular concave stop, and / or a second guiding slope is provided on the lower peripheral edge of the annular convex stop.

[0023] The guiding bevel is used for guiding when the annular convex stop enters the annular concave stop, so as to facilitate insertion and docking.

[0024] In the above-mentioned new main inlet, an annular sealing groove is provided on the inner wall of the annular concave stop or the outer wall of the annular convex stop, and a sealing ring is provided in the annular sealing groove. The inner and outer sides of the sealing ring are tightly attached to the annular concave stop and the annular convex stop respectively.

[0025] A sealing ring is also provided between the annular concave stop and the annular convex stop to further ensure the seal between the nozzle body and the base and reduce the possibility of material leakage.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] 1. The inlet body of the utility model is arranged on the diverter plate through the base. The inlet body and the base, as well as the diverter plate and the inlet body are detachably connected, which is convenient for disassembly and assembly. Moreover, the corresponding connection positions are not connected to the feed channel, that is, they will not come into direct contact with the material, effectively ensuring the service life of the connection structure.

[0028] 2. A wedge-type locking and anti-loosening double-stacked washer is provided between the opposite surfaces of the main body section and the base, and the wedge-type locking and anti-loosening double-stacked washer is clamped to effectively prevent the nozzle body from loosening.

[0029] 3. The annular convex stop of the nozzle body is just stuck in the annular convex stop. On the one hand, it has a good positioning effect on the nozzle body. On the other hand, a good seal can be formed between the annular concave stop and the annular convex stop to avoid leakage.

[0030] 4. A deformable metal ring is provided between the opposite surfaces of the annular convex stop and the annular concave stop. The metal ring can adaptively deform after axial compression and has a tendency to recover. It can compensate for the gap error between the lower end of the nozzle body and the base, and also ensure a good sealing effect between the annular convex stop and the annular concave stop. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure provided by the utility model (Example 1);

[0032] Figure 2 This is a cross-sectional schematic diagram provided by the present utility model (Example 1);

[0033] Figure 3 This is a schematic diagram of the overall structure provided by the utility model (Example 2);

[0034] Figure 4 It is a partial cross-sectional schematic diagram provided by the utility model (Example 3).

[0035] In the figure, there are a diverter plate 1, a main channel 11, a feed through hole 12, an annular concave stop 13, a base connecting screw hole 14, an inlet body 2, a feed channel 21, a main body section 22, a threaded section 23, an annular groove 24, a deformable metal ring 25, a second guide slope 26, an annular sealing groove 27, a sealing ring 28, an annular convex stop 29, a base 3, a main body connecting screw hole 31, a connecting hole 32, a connecting bolt 33, and a wedge-type locking and anti-loosening double-stacked washer 4. DETAILED DESCRIPTION

[0036] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0037] Example 1

[0038] Specific implementation examples Figure 1 、 2 As shown, the new main inlet nozzle is arranged on the diverter plate 1, and includes a base 3 and an inlet main body 2 detachably arranged on the base 3. The base 3 is detachably fixed to the diverter plate 1, and a feed channel 21 is provided in the inlet main body 2, which is connected to the main channel 11 through the feed through hole 12 of the diverter plate 1.

[0039] Specifically, the nozzle body 2 of the present invention is arranged on the diverter plate 1 through the base 3. The nozzle body 2 and the base 3, as well as the diverter plate 1 and the nozzle body 2 are all detachably connected, which is convenient for disassembly and assembly. Moreover, the corresponding connection positions are not connected to the feed channel 21, that is, they will not come into direct contact with the material, effectively ensuring the service life of the connection structure.

[0040] like Figure 2 As shown, the base 3 is provided with main body connection screw holes 31, into which the threaded section 23 at the lower end of the nozzle body 2 engages. The nozzle body 2 comprises a main body section 22 and a threaded section 23. The threaded section 23 has an outer diameter smaller than that of the main body section 22, and the lower end surface of the main body section 22 abuts the base 3. The base 3 is square, with four connection holes 32 located at its four corners. Connecting bolts 33 pass through these holes and engage with the base connection screw holes 14 of the manifold 1.

[0041] Specifically, the main body connection screw hole 31 is vertically penetrated and opened on the base 3, and the nozzle body 2 is screwed into the main body connection screw hole 31 through its threaded section 23, so as to realize a stable detachable fixed connection. The outer diameter of the main body section 22 is larger than the threaded section 23. After the threaded section 23 is fully screwed in, the lower end face of the main body section 22 is in contact with the base 3, which has a positioning effect on the one hand, and on the other hand, the relative surfaces of the main body section 22 and the base 3 are in close contact, which can effectively prevent the relative rotation of the nozzle body 2 and the base 3 and prevent loosening. In addition, there is also good sealing between the main body section 22 and the base 3. A connecting bolt 33 is provided in the connection hole 32 of the base 3, and the connecting bolt 33 is screwed to the base connection screw hole 14 on the diverter plate 1 to realize that the base 3 is pressed and fixed on the diverter plate 1. It has a simple structure, a good fixing effect, and is detachable. The shape of the base 3 is preferably square, and the connecting holes 32 are distributed on the four corners, so that the force is evenly distributed and the fixing effect is good. Moreover, the thread of the connecting bolt 33 is coarse, and the base connecting screw hole 14 is adapted thereto, thereby reducing the possibility of teeth biting.

[0042] like Figure 2 As shown, the outer end of the feed hole 12 is provided with an annular concave stop 13, and the lower end of the nozzle body 2 is provided with an annular convex stop 29. The annular convex stop 29 is precisely fixed in the annular concave stop 13, and the lower end of the annular convex stop 29 abuts the inner end surface of the annular concave stop 13. The lower outer periphery of the annular convex stop 29 is provided with a second guide slope 26.

[0043] Specifically, the annular convex stop 29 of the nozzle body 2 fits snugly within the annular convex stop 29, effectively positioning the nozzle body 2. Furthermore, a good seal is formed between the annular concave stop 13 and the annular convex stop 29, preventing material leakage. The guiding slope serves to guide the annular convex stop 29 as it enters the annular concave stop 13, facilitating insertion and docking.

[0044] As an illustration, the base connection screw hole 14 and the connection hole 32 are located in the directions marked in the figure. Since they are blocked and cannot be seen, the corresponding markings are not directly pointed to.

[0045] Detailed working principle: During assembly, first screw the nozzle body 2 onto the base 3 until the lower end of the main body section 22 is in close contact with the upper end surface of the base 3. Then, align the annular male stop 29 of the nozzle body 2 with the annular female stop 13 of the manifold 1. Secure the base 3 to the manifold 1 with the connecting bolts 33 to complete the installation. During use, molten plastic is fed into the upper end of the feed channel 21 and discharged from the lower end of the feed channel 21 to the corresponding position. To replace the nozzle body 2, simply unscrew it from the base 3, or unscrew both the base 3 and the nozzle body 2 together.

[0046] Example 2

[0047] The specific working principle of this embodiment is basically the same as that of embodiment 1, and the difference lies in the structure that prevents relative rotation between the base 3 and the nozzle body 2.

[0048] Specific implementation examples Figure 3 As shown, a wedge-type locking and anti-loosening double-stack washer 4 is sleeved on the threaded section 23, and the upper and lower end surfaces of the wedge-type locking and anti-loosening double-stack washer 4 are tightly attached to the main section 22 and the base 3 respectively.

[0049] Specifically, in order to further prevent the relative rotation of the nozzle body 2 and the base 3, a wedge-type locking and anti-loosening double-stacked washer 4 is provided between the opposite surfaces of the main body section 22 and the base 3, and the wedge-type locking and anti-loosening double-stacked washer 4 is clamped to effectively prevent the nozzle body 2 from loosening.

[0050] Example 3

[0051] The specific working principle of this embodiment is basically the same as that of Example 2, and the difference lies in the sealing structure between the annular convex stop 29 and the annular concave stop 13.

[0052] Specific implementation examples Figure 4 As shown, an annular groove 24 is provided on the lower end surface of the annular convex stop 29 , and a deformable metal ring 25 is provided in the annular groove 24 . The deformable metal ring 25 is pressed tightly between the annular concave stop 13 and the annular convex stop 29 .

[0053] Specifically, a deformable metal ring 25 is provided between the opposite surfaces of the annular convex stop 29 and the annular concave stop 13. The metal ring can adaptively deform after axial compression and has a tendency to recover. It can compensate for the gap error between the lower end of the nozzle body 2 and the base 3, and also ensure a good sealing effect between the annular convex stop 29 and the annular concave stop 13.

[0054] Furthermore, an annular sealing groove 27 is provided on the outer wall of the annular convex stop 29, and a sealing ring 28 is provided in the annular sealing groove 27. The inner and outer sides of the sealing ring 28 are respectively in close contact with the annular concave stop 13 and the annular convex stop 29, thereby further ensuring the seal between the nozzle body 2 and the base 3 and reducing the possibility of leakage.

[0055] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A new main inlet nozzle, arranged on a diverter plate (1), characterized in that: The invention comprises a base (3) and a nozzle body (2) detachably arranged on the base (3); the base (3) is detachably fixed to the diverter plate (1); and the nozzle body (2) is provided with a feed channel (21) connected to the main flow channel (11) through the feed through hole (12) of the diverter plate (1).

2. The novel main inlet nozzle according to claim 1, characterized in that: The base (3) is provided with a main body connecting screw hole (31), and the threaded section (23) at the lower end of the nozzle main body (2) is engaged in the main body connecting screw hole (31).

3. The novel main inlet nozzle according to claim 2, characterized in that: The nozzle body (2) comprises a main body section (22) and a threaded section (23); the threaded section (23) has an outer diameter smaller than that of the main body section (22); and the lower end surface of the main body section (22) abuts against the base (3).

4. The new main inlet nozzle according to claim 3, characterized in that: A wedge-type locking and anti-loosening double-stack washer (4) is sleeved on the threaded section (23), and the upper and lower end surfaces of the wedge-type locking and anti-loosening double-stack washer (4) are respectively tightly attached to the main section (22) and the base (3).

5. The novel main inlet nozzle according to claim 1, characterized in that: At least three connection holes (32) are distributed on the base (3) along the circumference of the nozzle body (2), and the connection bolts (33) pass through the connection holes (32) and engage with the base connection screw holes (14) of the diverter plate (1).

6. The novel main inlet nozzle according to claim 5, characterized in that: The base (3) is square, and there are four connecting holes (32), which are respectively located at the four corners of the base (3).

7. The novel main inlet nozzle according to any one of claims 1 to 6, characterized in that: An annular concave stop (13) is provided on the outer end of the feed through hole (12), and an annular convex stop (29) is provided on the lower end of the nozzle body (2), and the annular convex stop (29) is just stuck in the annular concave stop (13).

8. The new main inlet nozzle according to claim 7, characterized in that: The lower end surface of the annular convex stop (29) and / or the upper end surface of the annular concave stop (13) are provided with an annular groove (24), and a deformable metal ring (25) is provided in the annular groove (24). The deformable metal ring (25) is pressed between the annular concave stop (13) and the annular convex stop (29).

9. The novel main inlet nozzle according to claim 7, characterized in that: A first guiding slope is provided on the upper peripheral edge of the annular concave stop (13), and / or a second guiding slope is provided on the lower peripheral edge of the annular convex stop (29).

10. The novel main inlet nozzle according to claim 7, characterized in that: An annular sealing groove (27) is provided on the inner side wall of the annular concave stop (13) or the outer side wall of the annular convex stop (29), and a sealing ring (28) is provided in the annular sealing groove (27). The inner and outer sides of the sealing ring (28) are respectively in close contact with the annular concave stop (13) and the annular convex stop (29).

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