Nozzle of plastic injection molding machine

Abstract

The utility model discloses a nozzle of a plastic injection molding machine, which relates to the technical field of injection molding machines, and comprises a nozzle main body and a rotating column, the upper end of the nozzle main body is provided with a feeding hole, and the lower end of the nozzle main body is provided with a discharging hole corresponding to the feeding hole; a first groove is formed in the position, between the feeding hole and the discharging opening, of one side of the nozzle body, a rotating rod is rotationally arranged on the inner wall of the upper end of the first groove, the rotating column is fixedly connected to the rod wall of the rotating rod in a sleeving mode, and a plurality of spraying channels with different diameters are formed in the surface of the rotating column in an annular array mode with the rotating rod as the axis; a second groove is formed in one side of the upper end of the nozzle body, the upper end of the rotating rod extends to the inner side of the second groove, and a limiting mechanism for limiting rotation of the rotating rod is arranged in the second groove. The discharging diameter of the nozzle can be adjusted, operation is convenient, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a nozzle of a plastic injection molding machine. Background Art

[0002] An injection molding machine is a machine that injects plastic into the mold. When it works, it needs to melt the solid raw materials into a molten state and inject them into the mold through a material pipe and a nozzle for molding. Considering the performance testing requirements such as the energy consumption test of the injection molding machine, it is necessary to install a test nozzle on the injection molding machine for testing.

[0003] The injection diameter of the nozzle of a traditional plastic injection molding machine is usually fixed. Therefore, when performing injection tests of different diameters, it is necessary to manually disassemble and replace the nozzles of the plastic injection molding machine with different diameters. The operation is cumbersome, time-consuming and labor-intensive, which greatly affects the efficiency of the test work. Utility Model Content

[0004] In view of the above problems existing in the nozzle of the existing plastic injection molding machine, the present utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide a nozzle for a plastic injection molding machine, which solves the problem that the injection diameter of the nozzle of the plastic injection molding machine in the prior art is usually fixed. Therefore, when performing injection tests of different diameters, it is necessary to manually disassemble and replace the nozzles of the plastic injection molding machine with different diameters, which is cumbersome, time-consuming and labor-intensive, and greatly affects the efficiency of the testing work.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A nozzle for a plastic injection molding machine comprises a nozzle body and a rotating column, wherein a feed hole is provided at the upper end of the nozzle body, a discharge port is provided at the lower end of the nozzle body and at a position corresponding to the feed hole, a first groove is provided on one side of the nozzle body and located between the feed hole and the discharge port, a rotating rod is rotatably provided on the inner wall of the upper end of the first groove, the rotating column is fixedly sleeved on the rod wall of the rotating rod, a plurality of injection channels of different diameters are distributed in a circular array with the rotating rod as the axis on the surface of the rotating column, a second groove is provided on one side of the upper end of the nozzle body, the upper end of the rotating rod extends to the inner side of the second groove, and a limiting mechanism for limiting the rotation of the rotating rod is provided inside the second groove.

[0008] Preferably, the limiting mechanism includes a first gear and a second gear, the first gear is arranged on the inner side of the second groove and fixedly sleeved with the upper end of the rotating rod, the second gear is meshingly arranged on one side of the first gear, through holes are provided on both side surfaces of the second gear, a vertical rod is movably sleeved inside the through holes, both ends of the vertical rod are fixedly connected to the inner wall of the corresponding second groove, a threaded hole is provided on the inner wall of the second groove and directly below the second gear, a threaded rod is sleeved inside the threaded hole, the upper end of the threaded rod is rotatably connected to the middle part of the lower surface of the second gear, and when the second gear is meshed with the first gear, the first gear can be limited, that is, the rotating rod is limited, thereby maintaining the stability of the rotating column.

[0009] Preferably, a mounting plate is fixedly provided on the upper end of the nozzle body, and mounting holes are provided at both ends of the mounting plate to facilitate installation of the nozzle body.

[0010] Preferably, a knob is fixedly sleeved on the lower end of the threaded rod to facilitate rotation of the threaded rod.

[0011] Preferably, a sealing gasket is fixedly provided on the outer wall of the rotating column, which can improve the sealing between the rotating column and the first groove.

[0012] Preferably, a dustproof cap is clamped on the inner wall of one end of the outer side of the second groove, which can improve the dustproof performance of the second groove.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] The utility model, by rotating the threaded rod, makes the threaded rod drive the second gear that is limited by the vertical rod and cannot rotate to move, so that the second gear is separated from the first gear, that is, the limitation of the first gear is released, and then the limitation of the rotating rod is released, that is, the rotating column can be rotated, which is convenient for rotating injection channels of different diameters to between the feed hole and the discharge port, that is, the discharge diameter of the nozzle body is adjusted. After the adjustment, the threaded rod is rotated in the opposite direction, so that the threaded rod drives the second gear that is limited by the vertical rod and cannot rotate to move upward, that is, the second gear is meshed with the first gear again, so that the first gear cannot rotate, that is, the rotating rod cannot rotate, thus realizing the limitation of the rotating column, and thus stable injection molding test work can be carried out, and the operation is convenient, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 This is a structural schematic diagram of a nozzle of a plastic injection molding machine proposed by the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0018] Figure 3 for Figure 2 A schematic diagram of the structure of the local A part;

[0019] Figure 4 for Figure 2 Schematic diagram of the top view of the central rotating column.

[0020] Description of reference numerals:

[0021] 1. Nozzle body; 2. Dust cap; 3. Mounting plate; 4. Feed hole; 5. Discharge port; 6. Rotating column; 7. Injection channel; 8. Rotating rod; 9. First gear; 10. Second gear; 11. Threaded rod; 12. Knob; 13. Vertical rod; 14. Sealing gasket. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] The utility model embodiment discloses a nozzle of a plastic injection molding machine.

[0024] Reference Figure 1-4 , a nozzle of a plastic injection molding machine comprises a nozzle body 1 and a rotating column 6, a feed hole 4 is provided at the upper end of the nozzle body 1, a discharge port 5 is provided at the lower end of the nozzle body 1 and at a position corresponding to the feed hole 4, a mounting plate 3 is fixedly arranged on the upper end of the nozzle body 1, and mounting holes are provided at both ends of the mounting plate 3 to facilitate the installation of the nozzle body 1, a first groove is provided on one side of the nozzle body 1 and located between the feed hole 4 and the discharge port 5, a rotating rod 8 is rotatably provided on the inner wall of the upper end of the first groove, the rotating column 6 is fixedly sleeved on the rod wall of the rotating rod 8, a sealing gasket 14 is fixedly provided on the outer wall of the rotating column 6 to improve the sealing between the rotating column 6 and the first groove, a plurality of injection channels 7 of different diameters are distributed in a ring array with the rotating rod 8 as the axis, a second groove is provided on one side of the upper end of the nozzle body 1, and the upper end of the rotating rod 8 extends to the inner side of the second groove.

[0025] Reference Figure 1-4A limiting mechanism for limiting the rotation of the rotating rod 8 is arranged inside the second groove, and the limiting mechanism includes a first gear 9 and a second gear 10. The first gear 9 is arranged on the inner side of the second groove and fixedly sleeved with the upper end of the rotating rod 8. The second gear 10 is meshingly arranged on one side of the first gear 9. Through holes are provided on both side surfaces of the second gear 10, and a vertical rod 13 is movably sleeved inside the through hole. Both ends of the vertical rod 13 are fixedly connected to the inner wall of the corresponding second groove. A threaded hole is provided on the inner wall of the second groove and is located directly below the second gear 10. A threaded rod 11 is sleeved on the internal thread of the threaded hole. The upper end of the threaded rod 11 is rotatably connected to the middle part of the lower surface of the second gear 10, and a knob 12 is fixedly sleeved on the lower end of the threaded rod 11 to facilitate the rotation of the threaded rod 11. A dust cap 2 is clamped on the inner wall of one end of the outer side of the second groove to improve the dustproof performance of the second groove.

[0026] The second gear 10 that is limited by the vertical rod 13 and cannot rotate is moved upward by rotating the threaded rod 11, so that the second gear 10 is separated from the first gear 9, that is, the limitation of the first gear 9 is released, and then the limitation of the rotating rod 8 is released, that is, the rotating column 6 can be rotated, and the injection channels 7 of different diameters can be rotated between the feed hole 4 and the discharge port 5, so that the discharge diameter of the nozzle body can be adjusted. After the adjustment, the threaded rod 11 is rotated in the opposite direction, so that the threaded rod 11 drives the second gear 10 that is limited by the vertical rod 13 and cannot rotate to move upward, so that the second gear is meshed with the first gear 9 again, so that the first gear 9 cannot rotate, and the rotating rod 8 cannot rotate, so that the limitation of the rotating column 6 is realized, so that stable injection molding test work can be carried out, and the whole process is easy to operate, saving time and effort.

[0027] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A nozzle for a plastic injection molding machine, comprising a nozzle body (1) and a rotating column (6), characterized in that: A feed hole (4) is provided at the upper end of the nozzle body (1), a discharge port (5) is provided at the lower end of the nozzle body (1) and at a position corresponding to the feed hole (4), a first groove is provided on one side of the nozzle body (1) and located between the feed hole (4) and the discharge port (5), a rotating rod (8) is rotatably provided on the inner wall of the upper end of the first groove, the rotating column (6) is fixedly sleeved on the rod wall of the rotating rod (8), a plurality of injection channels (7) of different diameters are provided on the surface of the rotating column (6) in a circular array with the rotating rod (8) as the axis, a second groove is provided on one side of the upper end of the nozzle body (1), the upper end of the rotating rod (8) extends to the inner side of the second groove, and a limiting mechanism for limiting the rotation of the rotating rod (8) is provided inside the second groove.

2. The nozzle of the plastic injection molding machine according to claim 1, characterized in that: The limiting mechanism comprises a first gear (9) and a second gear (10), wherein the first gear (9) is arranged on the inner side of the second groove and fixedly sleeved with the upper end of the rotating rod (8), and the second gear (10) is meshingly arranged on one side of the first gear (9), and through holes are provided on both side surfaces of the second gear (10), and a vertical rod (13) is movably sleeved inside the through hole, and both ends of the vertical rod (13) are fixedly connected to the inner wall of the corresponding second groove, and a threaded hole is provided on the inner wall of the second groove and directly below the second gear (10), and a threaded rod (11) is sleeved inside the threaded hole, and the upper end of the threaded rod (11) is rotatably connected to the middle part of the lower surface of the second gear (10).

3. The nozzle of the plastic injection molding machine according to claim 1, characterized in that: A mounting plate (3) is fixedly provided on the upper end of the nozzle body (1), and mounting holes are provided at both ends of the mounting plate (3).

4. The nozzle of the plastic injection molding machine according to claim 2, characterized in that: The lower end of the threaded rod (11) is fixedly sleeved with a knob (12).

5. The nozzle of the plastic injection molding machine according to claim 1, characterized in that: A sealing gasket (14) is fixedly arranged on the outer wall of the rotating column (6).

6. The nozzle of the plastic injection molding machine according to claim 1, characterized in that: A dust cap (2) is clamped on the inner wall of one end of the outer side of the second groove.

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