Belleville spring hot nozzle bushing

Abstract

The utility model relates to the technical field of hot nozzle bushings, and discloses a disc spring hot nozzle bush which comprises a die, a die mounting hole is formed in the end of the die, a positioning ring is movably connected in the die mounting hole in a sleeved mode, a hot nozzle bush is connected in the positioning ring in a sleeved mode, a hot nozzle body is arranged in the hot nozzle bush in a sleeved mode, and a disc spring is arranged in the hot nozzle body. A disc spring gasket and a disc spring which are positioned in the mold mounting hole and below the positioning ring are sleeved outside the hot nozzle bushing; the disc spring is positioned between the disc spring gasket and the positioning ring; the disc spring comprises a disc spring body arranged outside the hot nozzle lining in a sleeving mode, the section of the disc spring body is conical, and the lower end of the disc spring body is fixedly connected with a first wear-resisting ring. Due to the arrangement of the first wear-resisting ring and the second wear-resisting ring, the contact surface between the disc spring and the supporting structure can be effectively reduced, the resistance generated when the disc spring deforms and releases energy is further reduced, smooth deformation is ensured, meanwhile, wear generated during deformation is reduced, and the service life of the disc spring is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of hot nozzle bushings, and more specifically, the utility model relates to a disc spring hot nozzle bushing. Background Art

[0002] As a hot runner component on an injection molding device, a common hot nozzle includes a hot nozzle body, a hot nozzle tip that mates with the hot nozzle body, and a sealing ring disposed between the hot nozzle body and the hot nozzle tip; a hot nozzle bushing is provided around the hot nozzle body and the hot nozzle tip, and the hot nozzle bushing has effects such as protecting the mold and the hot runner system.

[0003] Previous hot nozzle bushings were of a fixed integral structure, and the disc spring had a single structure, and it could not well reduce the wear between the disc spring itself and its abutting parts, which not only reduced the service life of the disc spring, but also the resistance generated by friction would limit the deformation of the disc spring, thereby affecting the pressure released by its deformation and reducing its buffering performance, thus bringing inconvenience to use, so it needs to be improved. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a disc spring hot nozzle bushing.

[0005] To achieve the above object, the utility model provides the following technical solution: A disc spring hot nozzle bushing, including a mold, a mold mounting hole is opened at the end of the mold, a positioning ring is movably sleeved inside the mold mounting hole, a hot nozzle bushing is sleeved inside the positioning ring, a hot nozzle body is sleeved inside the hot nozzle bushing, a disc spring gasket and a disc spring are sleeved outside the hot nozzle bushing and are located inside the mold mounting hole and below the positioning ring; the disc spring is located between the disc spring gasket and the positioning ring;

[0006] The disc spring includes a disc spring body sleeved outside the hot nozzle bushing, the cross-section of the disc spring body is conical, a first wear-resistant ring is fixedly connected to the lower end of the disc spring body, a second wear-resistant ring is fixedly connected to the upper end of the disc spring body, the inner walls of the first wear-resistant ring and the second wear-resistant ring are smoothly connected to the inner wall of the disc spring body, the outer diameter dimensions of the second wear-resistant ring and the first wear-resistant ring are respectively larger than the outer diameter dimensions of the upper and lower ends of the disc spring body, and the remote ends of the first wear-resistant ring and the second wear-resistant ring are smooth arc surfaces.

[0007] As a preferred technical solution of the utility model, the disc spring gasket includes a first support ring, a second support ring, an adjustment component and an airbag ring sleeved between the hot nozzle bushing and the mold mounting hole, the first support ring is located between the second support ring and the second wear-resistant ring, the airbag ring is fixedly connected between the first support ring and the second support ring, and the adjustment component is connected to the bottom of the second support ring.

[0008] As a preferred technical solution of the present utility model, a plurality of rent reduction pads are fixedly connected to the top of the first support ring, the top of the rent reduction pads is smooth, and the top of the rent reduction pads is in contact with the bottom of the first wear-resistant ring.

[0009] As a preferred technical solution of the present utility model, one end of the rent reduction pad is flush with the inner diameter of the first support ring, the other end of the rent reduction pad is flush with the outer diameter of the first support ring, the inner diameter dimension of the first support ring is smaller than the inner diameter dimension of the first wear-resistant ring, and the outer diameter dimension of the first support ring is larger than the outer diameter dimension of the first wear-resistant ring.

[0010] As a preferred technical solution of the present utility model, the adjusting assembly includes an adjusting ring rotatably clamped to the bottom of the second support ring, an adjusting cavity is opened at the top of the adjusting ring, a linkage ring is threadedly sleeved inside the adjusting cavity, and a plurality of linkage sliding rods are fixedly connected to the top of the linkage ring and are evenly distributed.

[0011] As a preferred technical solution of the present utility model, the upper end of the linkage sliding rod penetrates through the linkage ring, the second support ring and the airbag ring and is fixedly connected to the bottom of the first support ring, and the linkage sliding rod is movably and sealingly sleeved inside the second support ring.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. Due to the arrangement of the first wear-resistant ring and the second wear-resistant ring in the present utility model, the contact surface between the disc spring and the support structure can be effectively reduced, thereby reducing the resistance when the disc spring deforms and releases energy, ensuring smooth deformation, reducing wear during deformation at the same time, and prolonging the service life of the disc spring.

[0014] 2. Due to the arrangement of the adjusting assembly in the present utility model, with the cooperation of the first support ring and the second support ring, it is convenient for the staff to adjust the airbag ring, so that the airbag ring can expand, thereby ensuring that the inner and outer sides of the airbag ring can be adapted to the outer diameter of the nozzle bushing and the inner diameter dimension of the mold mounting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a schematic structural diagram of the disc spring gasket of the present utility model;

[0017] Figure 3 is a front sectional view of the disc spring gasket of the present utility model;

[0018] Figure 4 is a schematic structural diagram of the disc spring of the present utility model;

[0019] Figure 5This is a partial schematic view of the cross-section of the disc spring of the present utility model.

[0020] In the figure: 1, mold; 2, hot nozzle bushing; 3, hot nozzle body; 4, mold mounting hole; 5, positioning ring; 6, disc spring gasket; 61, first support ring; 62, second support ring; 63, adjustment assembly; 631, adjustment ring; 632, adjustment cavity; 633, linkage ring; 634, linkage slide bar; 64, airbag ring; 65, rent reduction pad; 7, disc spring; 71, disc spring body; 72, first wear-resistant ring; 73, second wear-resistant ring. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] As Figures 1 to 5 shown, the present utility model provides a disc spring hot nozzle bushing, including a mold 1. A mold mounting hole 4 is opened at the end of the mold 1. A positioning ring 5 is movably sleeved inside the mold mounting hole 4. A hot nozzle bushing 2 is sleeved inside the positioning ring 5. A hot nozzle body 3 is sleeved inside the hot nozzle bushing 2. A disc spring gasket 6 and a disc spring 7 are sleeved outside the hot nozzle bushing 2 and are located inside the mold mounting hole 4 and below the positioning ring 5. The disc spring 7 is located between the disc spring gasket 6 and the positioning ring 5;

[0023] The disc spring 7 includes a disc spring body 71 sleeved outside the hot nozzle bushing 2. The cross-section of the disc spring body 71 is conical. A first wear-resistant ring 72 is fixedly connected to the lower end of the disc spring body 71. A second wear-resistant ring 73 is fixedly connected to the upper end of the disc spring body 71. The inner walls of the first wear-resistant ring 72 and the second wear-resistant ring 73 are smoothly connected to the inner wall of the disc spring body 71. The outer diameter dimensions of the second wear-resistant ring 73 and the first wear-resistant ring 72 are respectively larger than the outer diameter dimensions of the upper and lower ends of the disc spring body 71. The relatively far ends of the first wear-resistant ring 72 and the second wear-resistant ring 73 are smooth arc surfaces; due to the settings of the first wear-resistant ring 72 and the second wear-resistant ring 73, the contact surface between the disc spring 7 and the support structure can be effectively reduced, thereby reducing the resistance when the disc spring 7 deforms and releases energy, ensuring smooth deformation, and at the same time reducing the wear during deformation and prolonging the service life of the disc spring 7.

[0024] Among them, the disc spring gasket 6 includes a first support ring 61, a second support ring 62, an adjustment component 63 and an airbag ring 64 sleeved between the hot nozzle bushing 2 and the mold mounting hole 4. The first support ring 61 is located between the second support ring 62 and the second wear-resistant ring 73. The airbag ring 64 is fixedly connected between the first support ring 61 and the second support ring 62. The adjustment component 63 is connected to the bottom of the second support ring 62. Due to the setting of the airbag ring 64, when the distance between the first support ring 61 and the second support ring 62 is changed through the adjustment component 63, the inner and outer sides of the airbag ring 64 can be expanded, so that the inner diameter of the airbag ring 64 is reduced and the outer diameter is increased, so that the inner and outer sides of the airbag ring 64 can be respectively adapted to the outer surface of the hot nozzle bushing 2 and the inner wall of the mold mounting hole 4.

[0025] Among them, a plurality of rent reduction pads 65 are fixedly connected to the top of the first support ring 61, the top of the rent reduction pads 65 is smooth, and the top of the rent reduction pads 65 is in contact with the bottom of the first wear-resistant ring 72.

[0026] Among them, one end of the rent reduction pad 65 is flush with the inner diameter of the first support ring 61, and the other end of the rent reduction pad 65 is flush with the outer diameter of the first support ring 61. The inner diameter dimension of the first support ring 61 is smaller than the inner diameter dimension of the first wear-resistant ring 72, and the outer diameter dimension of the first support ring 61 is larger than the outer diameter dimension of the first wear-resistant ring 72. Due to the setting of the rent reduction pad 65, the contact area between the first wear-resistant ring 72 and its support member can be reduced, thereby reducing the frictional resistance and the wear of the first wear-resistant ring 72.

[0027] Among them, the adjustment component 63 includes an adjustment ring 631 rotatably clamped to the bottom of the second support ring 62. An adjustment cavity 632 is opened at the top of the adjustment ring 631. A linkage ring 633 is threadedly sleeved inside the adjustment cavity 632. A plurality of linkage sliding rods 634 are fixedly connected to the top of the linkage ring 633. Due to the setting of the adjustment component 63, with the cooperation of the first support ring 61 and the second support ring 62, it is convenient for the staff to adjust the airbag ring 64, so that the airbag ring 64 can expand, so as to ensure that the inner and outer sides of the airbag ring 64 can be adapted to the outer diameter of the hot nozzle bushing 2 and the inner diameter dimension of the mold mounting hole 4.

[0028] Among them, the upper end of the linkage sliding rod 634 penetrates through the linkage ring 633, the second support ring 62 and the airbag ring 64 and is fixedly connected to the bottom of the first support ring 61. The linkage sliding rod 634 is movable and is hermetically sleeved inside the second support ring 62.

[0029] The working principle and usage process of the present utility model:

[0030] During work, the hot nozzle bushing 2 and the positioning ring 5 can bear the instantaneously applied pressure through the disc spring gasket 6 connected thereto, and the deformation of the disc spring 7 is used for release, so as to avoid damage to the mold 1 and its connected components;

[0031] When the disc spring 7 is deformed, the parts abutting against its upper and lower ends will bear the same reaction force, that is, the first wear-resistant ring 72 and the second wear-resistant ring 73 have the same large extrusion force with their contact surface, and the deformation of the disc spring 7 will cause the first wear-resistant ring 72 and the second wear-resistant ring 73 to move with their contact surface, thus causing wear; and the arrangement of the first wear-resistant ring 72 and the second wear-resistant ring 73 can avoid direct wear of the disc spring body 71 of the elastic component of the disc spring 7, and avoid elastic loss that affects its buffering performance;

[0032] Moreover, since the inner diameter of the first wear-resistant ring 72 is relatively large, when the disc spring body 71 is deformed, the first wear-resistant ring 72 has a larger range of movement with its contact surface, so its wear is relatively serious. However, since the rent-reducing pad 65 in contact with it can reduce the contact area, the friction resistance is reduced, ensuring that the disc spring body 71 can deform and release energy in time, while reducing the wear of the first wear-resistant ring 72, thereby increasing the service life of the disc spring 7.

[0033] Before installation, the disc spring gasket 6 is adjusted according to the size of the mold mounting hole 4 so that it can be sleeved in the mold mounting hole 4, that is, the adjusting ring 631 and the first support ring 61 are relatively rotated. When the adjusting ring 631 rotates, the quota of the adjusting cavity 632 and the linkage ring 633 can make the two move up and down relative to each other, and then the distance between the first support ring 61 and the second support ring 62 is reduced through the linkage slide rod 634, so that the airbag ring 64 expands to the inside and outside, and the inner side is tightly fitted with the outer surface of the hot nozzle bushing 2, and the outer side is fitted with the inner wall of the mold mounting hole 4, and its bottom sits on the bottom of the inner cavity of the mold mounting hole 4, which is used to support the disc spring gasket 6 as a whole and support the disc spring 7 at the same time.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A disc spring hot runner bushing, comprising a mold (1), characterized in that: The end of the mold (1) is provided with a mold mounting hole (4). A positioning ring (5) is movably sleeved inside the mold mounting hole (4). A nozzle bushing (2) is sleeved inside the positioning ring (5). A nozzle body (3) is sleeved inside the nozzle bushing (2). A disc spring gasket (6) and a disc spring (7) which are located inside the mold mounting hole (4) and below the positioning ring (5) are sleeved outside the nozzle bushing (2). The disc spring (7) is located between the disc spring gasket (6) and the positioning ring (5). The disc spring (7) includes a disc spring body (71) sleeved outside the nozzle bushing (2). The cross-section of the disc spring body (71) is conical. A first wear-resistant ring (72) is fixedly connected to the lower end of the disc spring body (71). A second wear-resistant ring (73) is fixedly connected to the upper end of the disc spring body (71). The inner walls of the first wear-resistant ring (72) and the second wear-resistant ring (73) are smoothly connected to the inner wall of the disc spring body (71). The outer diameter dimensions of the second wear-resistant ring (73) and the first wear-resistant ring (72) are respectively larger than the outer diameter dimensions of the upper and lower ends of the disc spring body (71). The opposite distal ends of the first wear-resistant ring (72) and the second wear-resistant ring (73) are smooth arc surfaces.

2. The disc spring hot nozzle bushing according to claim 1, wherein: The disc spring gasket (6) includes a first support ring (61), a second support ring (62), an adjustment component (63) and an airbag ring (64) sleeved between the nozzle bushing (2) and the mold mounting hole (4). The first support ring (61) is located between the second support ring (62) and the second wear-resistant ring (73). The airbag ring (64) is fixedly connected between the first support ring (61) and the second support ring (62). The adjustment component (63) is connected to the bottom of the second support ring (62).

3. The disc spring hot nozzle bushing according to claim 2, characterized in that: A plurality of rent reduction pads (65) which are evenly distributed are fixedly connected to the top of the first support ring (61). The top of the rent reduction pad (65) is smooth. The top of the rent reduction pad (65) contacts the bottom of the first wear-resistant ring (72).

4. The disc spring hot nozzle bushing according to claim 3, characterized in that: One end of the rent reduction pad (65) is flush with the inner diameter of the first support ring (61). The other end of the rent reduction pad (65) is flush with the outer diameter of the first support ring (61). The inner diameter dimension of the first support ring (61) is smaller than the inner diameter dimension of the first wear-resistant ring (72). The outer diameter dimension of the first support ring (61) is larger than the outer diameter dimension of the first wear-resistant ring (72).

5. The disc spring hot nozzle bushing according to claim 2, characterized in that: The adjustment component (63) includes an adjustment ring (631) rotatably clamped to the bottom of the second support ring (62). An adjustment cavity (632) is opened at the top of the adjustment ring (631). A linkage ring (633) is threadedly sleeved inside the adjustment cavity (632). A plurality of linkage sliding rods (634) which are evenly distributed are fixedly connected to the top of the linkage ring (633).

6. The disc spring hot nozzle bushing according to claim 5, wherein: The upper ends of the linkage sliding rods (634) penetrate through the linkage ring (633), the second support ring (62) and the airbag ring (64) and are fixedly connected to the bottom of the first support ring (61). The linkage sliding rods (634) are movably and sealingly sleeved inside the second support ring (62).

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