Leakage-proof injection molding head of injection molding machine

Abstract

The utility model discloses a leak-proof injection molding head of an injection molding machine, which comprises an injection molding head and a leak-proof component positioned on a flange plate, the leak-proof component comprises a lantern ring, the side surface of the lantern ring is fixedly communicated with a mounting ring, the surface of the lantern ring integrally extends to form a mounting block, and an inner cavity of the mounting block is rotatably sleeved with a pin shaft and a worm respectively; the surface of the pin shaft is fixedly connected with a winding wheel and a worm wheel in a sleeved mode respectively, a steel sheet is arranged in an inner cavity of the lantern ring, and one end of the steel sheet is fixedly connected with a sealing ring. According to the leakage-proof injection molding head of the injection molding machine, the worm and the worm wheel rotate in a meshed mode to drive the winding wheel to wind a steel sheet, the steel sheet located in the inner cavity of the lantern ring also starts to wind, and the winding becomes smaller gradually along with winding, so that the steel sheet can extrude and fasten a sealing ring located at the flange plate, and the sealing ring is prevented from being damaged. In this way, the connecting position of the flange plate can be sealed again, the sealing effect is improved, and leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of injection heads, in particular to a leak-proof injection head for an injection molding machine. Background Technique

[0002] An injection machine, also known as an injection molding machine, is the main molding equipment for making various shaped plastic products from thermoplastic or thermosetting plastics using plastic molding dies. Among them, the injection head is connected to the injection machine, and the shape of the material is extruded through the injection head.

[0003] Currently, due to the different shapes of the extruded materials, the connection between the injection head and the pipeline on the injection machine is connected through a flange, which is also convenient for replacing different injection heads in the later stage. However, if the flange is not properly connected during connection, or if it has been used for a long time, it is easy to cause leakage problems. Content of the Utility Model

[0004] In view of the deficiencies of the prior art, the utility model provides a leak-proof injection head for an injection molding machine, which solves the problem that leakage is likely to occur if the flange is not properly connected during connection, or if it has been used for a long time.

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions: A leak-proof injection head for an injection molding machine includes an injection head, one end of the injection head is provided with a flange, and a leakage prevention component is arranged on the surface of the flange.

[0006] The leakage prevention component includes a collar, the side of the collar is fixedly communicated with an installation ring, the surface of the collar is integrally extended with an installation block, and a pin shaft and a worm are respectively rotatably sleeved in the inner cavity of the installation block. A winding wheel and a worm gear are respectively fixedly sleeved on the surface of the pin shaft. The worm gear is meshed with the worm. A steel sheet is arranged in the inner cavity of the collar, and one end of the steel sheet is fixedly connected with a sealing ring. One end of the steel sheet penetrates through the surfaces of the collar and the installation block and is wound around the winding wheel.

[0007] Preferably, the steel sheet and the sealing ring are of the same size.

[0008] Preferably, the installation ring is fixedly installed on the surface of the flange through bolts.

[0009] Preferably, one end of the worm gear is a bolt end and is located on the surface of the installation block.

[0010] Preferably, the worm gear is located above the worm.

[0011] Preferably, the steel sheet is in the shape of a tape measure.

[0012] Beneficial Effects

[0013] The present utility model provides a leak-proof injection head for an injection molding machine. Compared with the prior art, it has the following

[0014] Advantageous effects:

[0015] 1. For the leak-proof injection head of the injection molding machine, by turning the worm with a tool, the worm rotates. While the worm is rotating, since it is meshed with the worm gear, it will drive the worm gear, the pin shaft and the winding wheel to rotate simultaneously. After the winding wheel rotates, it will wind up the steel sheet, and the steel sheet located in the inner cavity of the collar also starts to be wound up. As the winding gradually becomes smaller, the steel sheet can squeeze and fasten the sealing ring at the flange, so that the connection at the flange can be sealed again, improving the sealing effect and avoiding the problem of leakage.

[0016] 2. For the leak-proof injection head of the injection molding machine, after the worm drives the worm gear to rotate and tightens and fixes the steel sheet, the wound steel sheet is fixed and will not rotate back. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural view of the present utility model;

[0018] Figure 2 is a schematic view of the disassembled structure of the present utility model;

[0019] Figure 3 is a schematic view of the leak-proof component structure of the present utility model;

[0020] Figure 4 is a left view of the structure of the present utility model;

[0021] Figure 5 is a partial schematic view of the leak-proof component structure of the present utility model.

[0022] In the figure: 1. Injection head; 3. Flange; 4. Leak-proof component; 41. Collar; 42. Mounting block; 43. Mounting ring; 44. Steel sheet; 45. Sealing ring; 46. Worm gear; 47. Worm; 48. Pin shaft; 49. Winding wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to 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 of the embodiments. Based on the embodiments of 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.

[0024] Please refer to Figure 1-2, the present utility model provides a technical solution: an anti-leakage injection head for an injection molding machine, including an injection head 1, one end of the injection head 1 is provided with a flange 3, and a leakage prevention component 4 is arranged on the surface of the flange 3. When the leakage prevention component 4 is in use, the injection head 1 needs to be connected to one end of the pipeline to be connected through the flange 3, and the leakage prevention component 4 seals the connection of the flange 3.

[0025] Please refer to Figure 3-5 , the leakage prevention component 4 includes a collar 41, the side of the collar 41 is fixedly communicated with a mounting ring 43, the mounting ring 43 is fixedly installed on the surface of the flange 3 by bolts, the surface of the collar 41 integrally extends with a mounting block 42, and the inner cavity of the mounting block 42 is respectively rotatably sleeved with a pin shaft 48 and a worm 47. The surface of the pin shaft 48 is respectively fixedly sleeved with a winding wheel 49 and a worm gear 46. The worm gear 46 is located above the worm 47. One end of the worm gear 46 is a bolt end and is located on the surface of the mounting block 42. The worm gear 46 is meshed with the worm 47. A steel sheet 44 is arranged in the inner cavity of the collar 41. The steel sheet 44 is in the shape of a tape measure, and it is convenient to tighten and extrude through the tape measure-shaped steel sheet 44.

[0026] One end of the steel sheet 44 is fixedly connected with a sealing ring 45. The steel sheet 44 and the sealing ring 45 are of the same size. One end of the steel sheet 44 penetrates through the surfaces of the collar 41 and the mounting block 42 and is wound around the winding wheel 49. Through grooves with the same size as the steel sheet 44 are provided on the surfaces of the collar 41 and the mounting block 42.

[0027] During use, first, the flange 3 of the injection head 1 is mutually attached to one end of the pipeline. A gasket is arranged between them during attachment, and then it is fixed by bolts. Then, manually expand the sealing ring 45 to make the sealing ring 45 also sleeved on the flange 3. Then, slide the sealing ring 45 on the flange 3, and slide the mounting ring 43 sleeved on the flange 3 and fix the mounting ring 43 on the flange 3 with screws. At this time, the sealing ring 45 is sleeved at the connection of the flange 3, and the collar 41 is located above the sealing ring 45. Then, rotate the worm 47 with a tool to make the worm 47 rotate. When the worm 47 rotates, since it is meshed with the worm gear 46, it will drive the worm gear 46, the pin shaft 48, and the winding wheel 49 to rotate simultaneously. After the winding wheel 49 rotates, it will wind up the steel sheet 44, and the steel sheet 44 located in the inner cavity of the collar 41 also starts to be wound up. As it gradually becomes smaller during winding, the steel sheet 44 can squeeze and fasten the sealing ring 45 located at the flange 3, so as to seal the connection of the flange 3 again, improve the sealing effect, and avoid leakage problems.

[0028] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leak-proof injection molding head for an injection molding machine, comprising an injection molding head (1), one end of the injection molding head (1) being provided with a flange (3), characterized in that: A leakage prevention component (4) is provided on the surface of the flange (3); The leakage prevention component (4) comprises a collar (41), the side of the collar (41) is fixedly connected to a mounting ring (43), the surface of the collar (41) is integrally extended with a mounting block (42), the inner cavity of the mounting block (42) is rotatably sleeved with a pin shaft (48) and a worm (47), and the surface of the pin shaft (48) is fixedly sleeved with a winding wheel (49) and a worm wheel (46), the worm wheel (46) and the worm (47) are meshedly connected, the inner cavity of the collar (41) is provided with a steel sheet (44), one end of the steel sheet (44) is fixedly connected to a sealing ring (45), one end of the steel sheet (44) passes through the surfaces of the collar (41) and the mounting block (42), and is wound around the winding wheel (49).

2. The leak-proof injection molding head of an injection molding machine according to claim 1, characterized in that: The steel sheet (44) and the sealing ring (45) are of the same size.

3. The leak-proof injection molding head of an injection molding machine according to claim 1, characterized in that: The mounting ring (43) is fixedly mounted on the surface of the flange (3) by means of bolts.

4. The leak-proof injection molding head of an injection molding machine according to claim 1, characterized in that: One end of the worm wheel (46) is a bolt end and is located on the surface of the mounting block (42).

5. The leak-proof injection molding head of an injection molding machine according to claim 4, characterized in that: The worm wheel (46) is located above the worm (47).

6. The leak-proof injection molding head of an injection molding machine according to claim 1, characterized in that: The steel sheet (44) is in the shape of a measuring tape.

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