Multi-head needle valve hot nozzle of hot runner

Abstract

The utility model relates to the technical field of hot nozzles of hot runners, in particular to a multi-head needle valve hot nozzle of a hot runner, which comprises a multi-head needle valve hot nozzle body and a plurality of movable valve cores, a support table and a fixed table are arranged at the top of the multi-head needle valve hot nozzle body, the fixed table is positioned above the support table, and the movable valve cores are arranged on the support table. A plurality of driving rods are slidably connected to the supporting table, driving shafts are fixedly connected to the bottoms of the driving rods, the bottoms of the driving shafts are fixedly connected with the valve element and used for driving the valve element to move, magnetic rings are fixedly connected to the tops of the driving rods, and a supporting circular ring capable of moving up and down is arranged at the top of the supporting table; by arranging the motor and the micro electric telescopic rod, the lifting circular ring can be driven by the motor to move up and down, the lifting circular ring drives all the valve elements to move synchronously, the micro electric telescopic rod can be independently controlled, and the movement of each valve element is independently controlled by electrifying the electromagnet and adsorbing the magnetic ring.

Description

Technical Field

[0001] The utility model relates to the technical field of hot runner nozzles, and specifically to a multi-nozzle needle valve hot runner nozzle. Background Technique

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

[0003] In the prior art, such as a full-heat multi-nozzle needle valve hot nozzle suitable for small product injection molding proposed in the patent application number "CN202220527693.X", which includes a lower body, an upper body, a valve needle sleeve, a valve core, a nozzle core and a copper sleeve heating ring. One end of the upper body is provided with a receiving groove, the clamping table of the lower body is clamped into the receiving groove, and two of the valve needle sleeves are embedded at the bottom of the receiving groove.

[0004] However, in the above patent application, the discharge of the multi-nozzle needle valve hot nozzle is controlled by the movement of the valve core. The movement mode of the valve core is single, and it is not convenient to select to drive all the valve cores to move simultaneously or independently control the movement of each valve core according to actual needs. Content of the Utility Model

[0005] The purpose of the utility model is to provide a multi-nozzle needle valve hot runner nozzle to solve the problems put forward in the above background technique.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] A multi-nozzle needle valve hot runner nozzle includes a multi-nozzle needle valve hot nozzle body and a plurality of movable valve cores. A support platform and a fixed platform are arranged at the top of the multi-nozzle needle valve hot nozzle body. The fixed platform is located above the support platform. A plurality of driving rods are slidably connected to the support platform. The bottom of the driving rod is fixedly connected with a driving shaft, and the bottom of the driving shaft is fixedly connected with the valve core to drive the valve core to move.

[0008] A magnetic ring is fixedly connected to the top of the driving rod. A lifting ring that can move up and down is arranged at the top of the support platform. A lifting plate is fixedly connected to the outer surface of the driving rod and above the lifting ring. A plurality of micro electric telescopic rods are fixedly connected to the fixed platform, and an electromagnet for cooperating with the magnetic ring is fixedly installed at the bottom of the micro electric telescopic rod.

[0009] Preferably, a first flow channel hole is arranged in the middle of the multi-nozzle needle valve hot nozzle body, and a bent input pipe is fixedly connected to the multi-nozzle needle valve hot nozzle body, and the bent input pipe is communicated with the first flow channel hole.

[0010] Preferably, both sides of the top of the support table are fixedly connected with support frames, and the tops of the support frames are fixedly connected with the bottom of the fixed table.

[0011] Preferably, a motor is fixedly installed on the top of the fixed table. The output end of the motor is fixedly connected with a driving screw rod. The driving screw rod is threadedly connected with the lifting ring. The bottom of the driving screw rod is rotatably connected with the top of the support table.

[0012] Preferably, a limiting sliding groove is formed in the support frame. Both sides of the lifting ring are fixedly connected with limiting sliding blocks, and the limiting sliding blocks are slidably connected with the limiting sliding groove.

[0013] Preferably, a fixed sleeve is fixedly connected to the bottom of the support table, and a connecting sleeve is fixedly connected to the top of the multi-orifice needle valve nozzle body. The inner surface of the fixed sleeve and the outer surface of the connecting sleeve are fixedly welded.

[0014] Advantages of the utility model:

[0015] By providing a motor and a micro electric telescopic rod in the utility model, the lifting ring can be driven by the motor to move up and down, and all the valve cores can be driven by the lifting ring to move synchronously. Also, the control of the micro electric telescopic rod can be independently controlled. By using the electromagnet to be energized and adsorbed by the magnetic ring, the movement of each valve core can be independently controlled, so that the user can freely choose to control the movement of the valve cores uniformly or individually, and can control the discharging of each nozzle core part on the multi-orifice needle valve nozzle body uniformly or independently. Description of the drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings;

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 is the present utility model Figure 1 the connection schematic diagram of the support table and the fixed table;

[0019] Figure 3 is the present utility model Figure 2 the structural schematic diagram of the bottom of the support table;

[0020] Figure 4 is the present utility model Figure 2 the structural schematic diagram of the side view part of the support table.

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

[0022] 1. The multi - needle valve hot nozzle body, 101. The first flow channel hole, 102. The second flow channel hole, 2. The valve core, 3. The support platform, 4. The fixed platform, 5. The driving rod, 6. The driving shaft, 7. The magnetic ring, 8. The lifting ring, 9. The lifting plate, 10. The micro - electric telescopic rod, 11. The electromagnet, 12. The bent input pipe, 13. The support frame, 14. The motor, 15. The driving screw, 16. The limiting chute, 17. The limiting slider, 18. The fixed sleeve, 19. The connecting sleeve. Detailed implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] A hot - runner multi - needle valve hot nozzle includes a multi - needle valve hot nozzle body 1 and a plurality of movable valve cores 2. A support platform 3 and a fixed platform 4 are provided at the top of the multi - needle valve hot nozzle body 1. The fixed platform 4 is located above the support platform 3. A plurality of driving rods 5 are slidably connected to the support platform 3. The bottom of the driving rod 5 is fixedly connected to a driving shaft 6, and the bottom of the driving shaft 6 is fixedly connected to the valve core 2 for driving the valve core 2 to move.

[0025] The top of the driving rod 5 is fixedly connected to a magnetic ring 7. A liftable ring 8 that can move up and down is provided at the top of the support platform 3. A lift plate 9 is fixedly connected to the outer surface of the driving rod 5 and above the lift ring 8. A plurality of micro - electric telescopic rods 10 are fixedly connected to the fixed platform 4, and an electromagnet 11 for cooperating with the magnetic ring 7 is fixedly installed at the bottom of the micro - electric telescopic rod 10.

[0026] As Figure 1 、 Figure 2 and Figure 3 , the multi - needle valve hot nozzle body 1 is a prior art, and a valve needle sleeve, a V - type flow - dividing inclined plane and a corresponding heating mechanism are also provided therein. A first flow channel hole 101 is provided in the middle of the multi - needle valve hot nozzle body 1. A second flow channel hole parallel to the first flow channel hole 101 is provided on the multi - needle valve hot nozzle body 1. The valve core 2 is located in the second flow channel hole. The micro - electric telescopic rod 10 and the electromagnet 11 are both externally connected to a power supply and controlled by an external switch, and each micro - electric telescopic rod 10 and electromagnet 11 can be independently controlled.

[0027] A first flow channel hole 101 is provided in the middle of the multi - needle valve hot nozzle body 1. A bent input pipe 12 is fixedly connected to the multi - needle valve hot nozzle body 1, and the bent input pipe 12 is communicated with the first flow channel hole 101.

[0028] As Figure 1 , one side of the connecting sleeve 19 has an opening, so that one end of the bent input pipe 12 can pass through the connecting sleeve 19, and external raw materials can be input into the first flow channel hole 101 through the bent input pipe 12.

[0029] Both sides of the top of the support platform 3 are fixedly connected with support frames 13, and the top of the support frames 13 is fixedly connected with the bottom of the fixed platform 4.

[0030] As Figure 1 and Figure 3 , the fixed platform 4 is connected to the support platform 3 through the support frames 13, and the support platform 3 provides support for the fixed platform 4 through the support frames 13.

[0031] A motor 14 is fixedly installed on the top of the fixed platform 4. The output end of the motor 14 is fixedly connected with a driving screw 15. The driving screw 15 is threadedly connected with the lifting ring 8, and the bottom of the driving screw 15 is rotatably connected with the top of the support platform 3.

[0032] As Figure 2 and Figure 4 , the lifting ring 8 has a threaded hole to realize the threaded connection with the driving screw 15. By driving the driving screw 15 to rotate through the motor 14, the lifting ring 8 can move up and down.

[0033] A limiting sliding groove 16 is formed on the support frame 13. Limiting sliding blocks 17 are fixedly connected to both sides of the lifting ring 8, and the limiting sliding blocks 17 are slidably connected with the limiting sliding groove 16.

[0034] As Figure 2 and Figure 4 , by the sliding connection between the limiting sliding blocks 17 and the limiting sliding groove 16, the lifting ring 8 is limited, so that the lifting ring 8 can only move up and down in the vertical direction.

[0035] A fixed sleeve 18 is fixedly connected to the bottom of the support platform 3. The top of the multi - needle valve hot nozzle body 1 is fixedly connected with a connecting sleeve 19. The inner surface of the fixed sleeve 18 and the outer surface of the connecting sleeve 19 are welded and fixed.

[0036] As Figure 1 , the fixed sleeve 18 is welded to the connecting sleeve 19, so that the support platform 3 is relatively fixed to the multi - needle valve hot nozzle body 1.

[0037] The working principle of a hot runner multi - needle valve hot nozzle provided by the present utility model is as follows:

[0038] When the motor 14 drives the drive screw 15 to rotate, causing the lifting ring 8 to move upward, the lifting ring 8 drives all the lifting plates 9 to move upward, the lifting plates 9 drive the drive rod 5 to move upward, and the drive rod 5 drives the valve core 2 to move through the drive shaft 6, so that all the valve cores 2 move together with the lifting ring 8;

[0039] When the motor 14 drives the drive screw 15 to rotate, causing the lifting ring 8 to move downward to the lowest position, at this time, the micro electric telescopic rod 10 can be independently controlled, and the electromagnet 11 is energized. The micro electric telescopic rod 10 extends, so that the electromagnet 11 and the magnetic ring 7 are magnetically adsorbed together. At this time, the telescopic movement of the micro electric telescopic rod 10 can drive the drive shaft 5 to move through the adsorbed electromagnet 11 and magnetic ring 7. The drive rod 5 drives the valve core 2 to move through the drive shaft 6. Each micro electric telescopic rod 10 can be independently telescoped, and the movement of each valve core 2 can be independently controlled.

[0040] Compared with the related technology, a hot runner multi-head needle valve nozzle provided by the present utility model has the following

[0041] Beneficial effects:

[0042] By arranging the motor 14 and the micro electric telescopic rod 10, the present utility model enables the lifting ring 8 to move up and down driven by the motor 14, and all the valve cores 2 to move synchronously driven by the lifting ring 8. At the same time, the micro electric telescopic rod 10 can be independently controlled. By using the energization of the electromagnet 11 and the magnetic ring 7 for adsorption, the movement of each valve core 2 can be independently controlled, so that the user can freely choose to control the movement of the valve cores 2 uniformly or individually, and uniformly control or independently control the discharging of each nozzle core part on the multi-head needle valve nozzle body 1.

[0043] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A hot runner multi-needle valve nozzle, comprising a multi-needle valve nozzle body (1) and a plurality of movable valve cores (2), characterized in that: A support platform (3) and a fixed platform (4) are provided on the top of the multi-head needle valve hot nozzle body (1); the fixed platform (4) is located above the support platform (3); a plurality of driving rods (5) are slidably connected to the support platform (3); a driving shaft (6) is fixedly connected to the bottom of the driving rod (5); the bottom of the driving shaft (6) is fixedly connected to the valve core (2) for driving the valve core (2) to move; The top of the driving rod (5) is fixedly connected to a magnetic ring (7), the top of the support platform (3) is provided with a lifting ring (8) that can move up and down, the outer surface of the driving rod (5) and located above the lifting ring (8) is fixedly connected to a lifting plate (9), a plurality of micro electric telescopic rods (10) are fixedly connected to the fixing platform (4), and an electromagnet (11) for use with the magnetic ring (7) is fixedly installed at the bottom of the micro electric telescopic rod (10).

2. The hot runner multi-needle valve nozzle according to claim 1, characterized in that: A first flow channel hole (101) is provided in the middle of the multi-head needle valve hot nozzle body (1), a bent input pipe (12) is fixedly connected to the multi-head needle valve hot nozzle body (1), and the bent input pipe (12) and the first flow channel hole (101) are in communication.

3. The hot runner multi-needle valve nozzle according to claim 1, characterized in that: Both sides of the top of the support platform (3) are fixedly connected to support frames (13), and the top of the support frame (13) is fixedly connected to the bottom of the fixed platform (4).

4. The hot runner multi-head needle valve nozzle according to claim 3, characterized in that: A motor (14) is fixedly mounted on the top of the fixed platform (4), a driving screw (15) is fixedly connected to the output end of the motor (14), the driving screw (15) is threadedly connected to the lifting ring (8), and the bottom of the driving screw (15) is rotatably connected to the top of the support platform (3).

5. The hot runner multi-needle valve nozzle according to claim 4, characterized in that: The support frame (13) is provided with a limit sliding groove (16), and the two sides of the supporting ring (8) are fixedly connected with the limit sliding blocks (17), and the limit sliding blocks (17) and the limit sliding groove (16) are slidably connected.

6. The hot runner multi-head needle valve nozzle according to claim 1, characterized in that: The bottom of the support platform (3) is fixedly connected to a fixing sleeve (18), the top of the multi-head needle valve hot nozzle body (1) is fixedly connected to a connecting sleeve (19), and the inner surface of the fixing sleeve (18) and the outer surface of the connecting sleeve (19) are fixed by welding.

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