Hot runner nozzle mechanism

Abstract

The utility model relates to the technical field of hot runner nozzles, in particular to a hot runner nozzle mechanism which comprises a nozzle body, a runner is arranged inside the nozzle body, the bottom of the nozzle body is in threaded connection with a nozzle connector, the outer surface of the nozzle body is sleeved with a heater, and the outer surface of the heater is fixedly connected with a fixing ring. A fixing ring is arranged on the outer surface of the nozzle connector, an installation ring is arranged on the outer surface of the heater and located below the fixing ring in a sleeved mode, the bottom of the nozzle connector extends to the outer portion of the nozzle body, and installation connecting rods are fixedly connected to the two sides of the nozzle connector. The fixing ring and the mounting ring are positioned together through the locking piece, so that the mounting ring and the nozzle connector fixed together through the mounting connecting rod and the mounting ring cannot move downwards, and the phenomenon that normal use of the whole hot runner nozzle is affected due to loosening of the nozzle connector is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hot runner nozzles, in particular to a hot runner nozzle mechanism. Background Art

[0002] The main function of the hot runner nozzle is to keep the plastic in a molten state in the runner and gate to ensure that the plastic can flow smoothly and fill the mold cavity, thereby producing high-quality plastic parts.

[0003] In the prior art, a color-changeable nozzle for a hot runner, such as that proposed in patent application number "CN201621246179.X", includes: a nozzle body, the nozzle body having a flow channel running through the nozzle body in the up and down directions; a nozzle head, the nozzle head being detachably connected to the lower end of the nozzle body to connect the flow channel with the nozzle head.

[0004] However, in the above patent application, the nozzle head is only installed on the nozzle body by means of a threaded connection, so that the nozzle head may become loose, affecting the normal use of the entire hot runner nozzle. Utility Model Content

[0005] The purpose of the present utility model is to provide a hot runner nozzle mechanism to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A hot runner nozzle mechanism includes a nozzle body, a flow channel is opened inside the nozzle body, a nozzle joint is threadedly connected to the bottom of the nozzle body, a heater is sleeved on the outer surface of the nozzle body, a fixing ring is fixedly connected to the outer surface of the heater, and a mounting ring is sleeved on the outer surface of the heater and located below the fixing ring.

[0008] The bottom of the nozzle joint extends to the outside of the nozzle body, and mounting rods are fixedly connected to both sides of the nozzle joint. The end of the mounting rod away from the nozzle joint is fixedly connected to the mounting ring. A horizontally movable locking piece is provided between the fixing ring and the mounting ring. A positioning groove is provided on one side of the locking piece, and the bottom of the locking piece is inclined.

[0009] Preferably, a thermocouple is provided on one side of the nozzle body, and the thermocouple is connected to the heater for detecting and controlling the temperature of the nozzle body.

[0010] Preferably, a plurality of locking members are provided, and the plurality of locking members are arranged in a ring array around the fixing ring, and the outer surfaces of the fixing ring and the mounting ring are both located in the positioning groove.

[0011] Preferably, a raised block in an annular array is fixedly connected to the top of the fixing ring, a tension spring is fixedly connected to one side of the raised block, and one end of the tension spring is fixedly connected to the locking piece.

[0012] Preferably, the top of the locking member is fixedly connected to an adjustment plate, the top of the adjustment plate is tilted, a movable groove is provided on the adjustment plate, the top of the fixing ring is fixedly connected to a fixed shaft, and the fixed shaft and the movable groove are slidably connected.

[0013] Preferably, the outer surface of the heater is provided with threads, the outer surface of the heater is threadedly connected to a threaded sleeve, the bottom of the threaded sleeve is fixedly connected to a lifting and lowering ring, and the lifting and lowering ring conflicts with the inclined surface on the top of the adjustment plate.

[0014] Beneficial effects of the utility model:

[0015] The utility model causes the mounting ring to move upwards when the nozzle joint is threadedly connected to the nozzle body, and uses the locking piece to position the fixing ring and the mounting ring together, so that the mounting ring and the nozzle joint fixed together with the mounting ring by the mounting connecting rod cannot move downwards, thereby preventing the nozzle joint from loosening and affecting the normal use of the entire hot runner nozzle. Conversely, the threaded sleeve is rotated to drive the lifting and lowering pressure ring to move downwards, so that the locking piece, the fixing ring and the mounting ring can be separated, and the nozzle joint can be disassembled normally at this time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, it is possible for a person skilled in the art to derive other drawings based on these drawings without inventive effort.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This utility model Figure 1 Schematic diagram of the connection between the middle fixing ring and the mounting ring;

[0019] Figure 3 This utility model Figure 2 Structural diagram of the bottom of the middle mounting ring;

[0020] Figure 4 This utility model Figure 2 Enlarged view of point A in the middle.

[0021] The reference numerals in the figures are as follows:

[0022] 1. Nozzle body, 2. Flow channel, 3. Nozzle joint, 4. Heater, 5. Fixed ring, 501, Raised block, 6. Mounting ring, 7. Mounting connecting rod, 8. Locking piece, 801, Positioning groove, 9. Thermocouple, 10. Tension spring, 11. Adjustment plate, 12. Movable groove, 13. Fixed shaft, 14. Threaded sleeve, 15. Lifting and lowering ring. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] A hot runner nozzle mechanism includes a nozzle body 1, a flow channel 2 is opened inside the nozzle body 1, a nozzle joint 3 is threadedly connected to the bottom of the nozzle body 1, a heater 4 is sleeved on the outer surface of the nozzle body 1, a fixing ring 5 is fixedly connected to the outer surface of the heater 4, and a mounting ring 6 is sleeved on the outer surface of the heater 4 and located below the fixing ring 5.

[0025] The bottom of the nozzle joint 3 extends to the outside of the nozzle body 1, and mounting rods 7 are fixedly connected to both sides of the nozzle joint 3. The end of the mounting rod 7 away from the nozzle joint 3 is fixedly connected to the mounting ring 6. A horizontally movable locking member 8 is provided between the fixing ring 5 and the mounting ring 6. A positioning groove 801 is provided on one side of the locking member 8, and the bottom of the locking member 8 is inclined.

[0026] like Figure 1 There is a cavity at the bottom of the nozzle body 1, the inner wall of the cavity is threaded, and the outer surface of the nozzle joint 3 is threaded to achieve threaded connection of the nozzle joint 3 to the nozzle body 1. There is an opening inside the mounting ring 6 so that the nozzle body 1 can pass through the mounting ring 6.

[0027] A thermocouple 9 is provided on one side of the nozzle body 1 . The thermocouple 9 is connected to the heater 4 and is used to detect and control the temperature of the nozzle body 1 .

[0028] like Figure 1 The thermocouple 9 and the heater 4 are both prior art and will not be described in detail here.

[0029] There are multiple locking members 8 , which are arranged in a ring array around the fixing ring 5 . The outer surfaces of the fixing ring 5 and the mounting ring 6 are both located in the positioning groove 801 .

[0030] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The outer surfaces of the fixing ring 5 and the mounting ring 6 are located in the positioning groove 801, which can prevent the mounting ring 6 from moving downward and separating from the fixing ring 5.

[0031] The top of the fixing ring 5 is fixedly connected to a raised block 501 in an annular array, one side of the raised block 501 is fixedly connected to a tension spring 10 , and one end of the tension spring 10 is fixedly connected to the locking member 8 .

[0032] like Figure 2 、 Figure 3 and Figure 4 The number of the protruding blocks 501 and the locking member 8 is the same, and each protruding block 501 is connected to a locking member 8 through a tension spring 10, and the tension spring 10 has a tension on the locking member 8 in the direction of the protruding block 501.

[0033] The top of the locking member 8 is fixedly connected to an adjusting plate 11, the top of the adjusting plate 11 is tilted, a movable groove 12 is provided on the adjusting plate 11, the top of the fixing ring 5 is fixedly connected to a fixed shaft 13, and the fixed shaft 13 and the movable groove 12 are slidably connected.

[0034] like Figure 2 and Figure 4 The sliding connection between the fixed shaft 13 and the movable groove 12 can ensure the horizontal movement of the adjustment plate 11 and the locking member 8.

[0035] The outer surface of the heater 4 is provided with threads, and the outer surface of the heater 4 is threadedly connected to a threaded sleeve 14 . The bottom of the threaded sleeve 14 is fixedly connected to a lifting and lowering ring 15 . The lifting and lowering ring 15 conflicts with the inclined surface of the top of the adjustment plate 11 .

[0036] like Figure 1 and Figure 2 The inner surface of the threaded sleeve 14 is threaded to achieve a threaded connection with the outer surface of the heater 4. The surface of the threaded sleeve 14 has anti-slip grooves to facilitate manual rotation of the threaded sleeve 14. By manually threading the sleeve 14, the threaded sleeve 14 can drive the lifting and lowering ring 15 to move up and down.

[0037] The working principle of a hot runner nozzle mechanism provided by the utility model is as follows:

[0038] When the nozzle joint 3 needs to be installed on the nozzle body 1, the nozzle joint 3 is threadedly connected to the bottom of the nozzle body 1 by rotating the nozzle joint 3. At this time, the nozzle joint 3 will rotate and rise, and the nozzle joint 3 drives the installation ring 6 to rotate and rise through the installation connecting rod 7. During the rising process of the installation ring 6, the inclined surface of the bottom of the locking piece 8 is squeezed, so that the locking piece 8 moves in the direction away from the fixing ring 5. When the installation ring 6 moves up to the bottom of the fixing ring 5, the tension spring 10 contracts and pulls the locking piece 8, so that the locking piece 8 moves in the direction of the fixing ring 5, and the outer surfaces of the fixing ring 5 and the installation ring 6 are relatively stuck in the interior of the positioning groove 801. At this time, the installation ring 6 is restricted by the locking piece 8 and will not move downward, and the nozzle joint 3 fixed by the installation connecting rod 7 and the installation ring 6 will not move downward;

[0039] When removing the nozzle connector 3, the threaded sleeve 14 is rotated clockwise to drive the lifting and pressing ring 15 to move downward. The lifting and pressing ring 15 presses the inclined surface of the adjustment plate 11, so that the adjustment plate 11 drives the locking member 8 to move away from the fixing ring 5. At this time, the outer surfaces of the fixing ring 5 and the mounting ring 6 are relatively disengaged from the positioning groove 801. Then, the nozzle connector 3 can be rotated to remove it.

[0040] After the threaded sleeve 14 is rotated counterclockwise to drive the lifting and pressing ring 15 to reset, the tension spring 10 contracts, driving the locking member 8 to reset.

[0041] Compared with related technologies, the hot runner nozzle mechanism provided by the present invention has the following beneficial effects:

[0042] The utility model makes the mounting ring 6 move upward when the nozzle joint 3 is threadedly connected to the nozzle body 1, and uses the locking piece 8 to position the fixing ring 5 and the mounting ring 6 together, so that the mounting ring 6 and the nozzle joint 3 fixed together with the mounting ring 6 by the mounting connecting rod 7 cannot move downward, thereby preventing the nozzle joint 3 from loosening and affecting the normal use of the entire hot runner nozzle. Conversely, the threaded sleeve 14 is rotated to drive the lifting and lowering pressure ring 15 to move downward, so that the locking piece 8 can be separated from the fixing ring 5 and the mounting ring 6, and the nozzle joint 3 can be disassembled normally at this time.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A hot runner nozzle mechanism, comprising a nozzle body (1), a flow channel (2) being provided inside the nozzle body (1), a nozzle connector (3) being threadedly connected to the bottom of the nozzle body (1), and characterized in that: The outer surface of the nozzle body (1) is sleeved with a heater (4), the outer surface of the heater (4) is fixedly connected with a fixing ring (5), and the outer surface of the heater (4) and below the fixing ring (5) is sleeved with a mounting ring (6); The bottom of the nozzle joint (3) extends to the outside of the nozzle body (1), and mounting connecting rods (7) are fixedly connected to both sides of the nozzle joint (3). One end of the mounting connecting rod (7) away from the nozzle joint (3) is fixedly connected to the mounting ring (6), and a horizontally movable locking member (8) is provided between the fixing ring (5) and the mounting ring (6). A positioning groove (801) is provided on one side of the locking member (8), and the bottom of the locking member (8) is arranged at an angle.

2. A hot runner nozzle mechanism according to claim 1, characterized in that: A thermocouple (9) is provided on one side of the nozzle body (1), and the thermocouple (9) is connected to the heater (4) and is used to detect and control the temperature of the nozzle body (1).

3. The hot runner nozzle mechanism according to claim 1, characterized in that: There are multiple locking members (8), which are arranged in a ring array around the fixing ring (5). The outer surfaces of the fixing ring (5) and the mounting ring (6) are both located in the positioning groove (801).

4. A hot runner nozzle mechanism according to claim 3, characterized in that: The top of the fixing ring (5) is fixedly connected to a protruding block (501) in a ring array, one side of the protruding block (501) is fixedly connected to a tension spring (10), and one end of the tension spring (10) is fixedly connected to a locking member (8).

5. The hot runner nozzle mechanism according to claim 1, characterized in that: The top of the locking member (8) is fixedly connected to an adjusting plate (11), the top of the adjusting plate (11) is tilted, and a movable groove (12) is provided on the adjusting plate (11). The top of the fixing ring (5) is fixedly connected to a fixed shaft (13), and the fixed shaft (13) and the movable groove (12) are slidably connected.

6. The hot runner nozzle mechanism according to claim 5, characterized in that: The outer surface of the heater (4) is provided with a thread, the outer surface of the heater (4) is threadedly connected to a threaded sleeve (14), the bottom of the threaded sleeve (14) is fixedly connected to a lifting and lowering ring (15), and the lifting and lowering ring (15) and the inclined surface of the top of the adjustment plate (11) are in conflict.

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