Diameter-variable hot runner splitter plate

Abstract

The utility model relates to the technical field of splitter plates, and discloses a variable-diameter hot runner splitter plate. The variable-diameter hot runner splitter plate comprises a splitter plate body, a main runner is arranged on the inner side of the splitter plate body, a heat insulation structure is arranged at the top end of the splitter plate body, and branch runners are arranged at the bottom end of the main runner. Through the arrangement of the threaded rod, the arc-shaped seat, the bearing and the adjusting groove, when an injection mold is tested, the internal diameter of the sub-runner is adjusted according to the result of each time of mold testing, and when the injection mold is adjusted, the threaded rod is screwed, and the threaded rod rotates, leftwards or rightwards on the splitter plate main body through the thread and the threaded groove; the bearings drive the arc-shaped seats to retract in the adjusting grooves and stretch out, when the arc-shaped seats stretch out, the diameters of the sub-runners are reduced, when the arc-shaped seats retract, the diameters of the sub-runners are increased, and the diameters of the sub-runners are adjusted by adjusting the positions of the arc-shaped seats.

Description

Technical Field

[0001] The utility model relates to the technical field of a flow splitter plate, in particular to a variable-diameter hot runner flow splitter plate. Background Technique

[0002] A hot runner keeps the plastic in the runner and the gate in a molten state by heating. A hot runner system generally consists of several parts such as a hot nozzle, a flow splitter plate, a temperature control box, and accessories. There are generally two types of hot nozzles: an open hot nozzle and a needle valve hot nozzle. Since the form of the hot nozzle directly determines the selection of the hot runner system and the manufacture of the mold, the hot runner system is often correspondingly divided into an open hot runner system and a needle valve hot runner system. The flow splitter plate is an important part of it. The heating element provides heat to the flow splitter plate, so that the plastic ejected from the main nozzle reaches each glue outlet (connected to the hot nozzle) in a molten state.

[0003] The existing hot runner of the flow splitter plate cannot adjust the diameter of the hot runner according to the actual effect of the mold trial. Therefore, there is an urgent need for a variable-diameter hot runner flow splitter plate. Content of the Utility Model

[0004] The purpose of the utility model is to provide a variable-diameter hot runner flow splitter plate to solve the problems in the above background technique that the existing hot runner of the flow splitter plate cannot adjust the diameter of the hot runner according to the actual effect of the mold trial, the installation of the cylinder and the flow splitter plate, and the high temperature of the flow splitter plate is easily conducted to the cylinder.

[0005] To solve the above technical problems, the utility model provides the following technical solution: a variable-diameter hot runner flow splitter plate, including a flow splitter plate body, a main runner is arranged inside the flow splitter plate body, and a heat insulation structure is arranged at the top of the flow splitter plate body. A flow dividing channel is arranged at the bottom end of the main runner, and a variable-diameter structure is arranged inside the flow dividing channel.

[0006] The variable-diameter structure includes an adjustment groove, an arc-shaped seat is clamped inside the adjustment groove, a bearing is arranged at the end of the arc-shaped seat, and a threaded rod is connected to the right side of the bearing.

[0007] The heat insulation structure includes a support sleeve, a first heat insulation plate is arranged inside the support sleeve, a buffer pad is arranged at the top of the first heat insulation plate, and a second heat insulation plate is arranged at the top of the buffer pad.

[0008] Preferably, heating tubes are arranged at both ends of the flow splitter plate body, and a main nozzle is arranged at the top of the flow splitter plate body. The main runner penetrates into the inside of the main nozzle.

[0009] Preferably, the arc-shaped seat is movably clamped with the adjustment groove and the flow dividing channel, and the number of the arc-shaped seats is two.

[0010] Preferably, the arc-shaped seat is movably connected to the threaded rod through a bearing, and the threaded rod is movably connected to the main body of the flow splitter through a thread groove.

[0011] Preferably, a cylinder is installed above the main body of the flow splitter, and a valve needle is provided at the output end of the cylinder.

[0012] Preferably, the support sleeve is fixed to the top end of the main body of the flow splitter, and the buffer pad is fixedly connected to the second heat insulation plate and the first heat insulation plate through glue respectively.

[0013] Preferably, through grooves matching the cylinder are formed inside the first heat insulation plate, the buffer pad and the second heat insulation plate.

[0014] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows:

[0015] First, by setting the threaded rod, arc-shaped seat, bearing and adjustment groove, during the trial mold of the injection mold, according to the results of each trial mold, the inner diameter of the runner is adjusted. During adjustment, the threaded rod is rotated. The threaded rod rotates on the main body of the flow splitter through the thread and the thread groove, rotates to the left or to the right, and respectively drives the arc-shaped seat to retract or extend in the adjustment groove through the bearing. When the arc-shaped seat extends, the diameter of the runner is reduced. When the arc-shaped seat retracts, the diameter of the runner is increased. By adjusting the position of the arc-shaped seat, the diameter adjustment of the runner is realized.

[0016] Second, by setting the support sleeve, the first heat insulation plate, the buffer pad and the second heat insulation plate, the support sleeve is fixed to the top end of the main body of the flow splitter. The support sleeve protects the first heat insulation plate, the buffer pad and the second heat insulation plate inside, so that the first heat insulation plate isolates the temperature conduction of the cylinder, the second heat insulation plate isolates the temperature conduction of the main body of the flow splitter, and the buffer pad slows down the pressure of the cylinder operation, so that the cylinder will not be affected by the temperature conduction after operation. Description of the Drawings

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

[0018] Figure 2 is a schematic diagram of the front sectional structure of the present utility model;

[0019] Figure 3 is a schematic diagram of the variable diameter structure of the present utility model;

[0020] Figure 4 is a schematic diagram of the threaded rod of the present utility model;

[0021] Figure 5 is a schematic diagram of the heat insulation structure of the present utility model.

[0022] Wherein: 1. Shunt plate body; 2. Heating tube; 3. Main runner; 4. Main nozzle; 5. Sub - runner; 6. Variable - diameter structure; 601. Adjusting groove; 602. Arc seat; 603. Bearing; 604. Threaded rod; 7. Heat - insulation structure; 701. Support sleeve; 702. First heat - insulation plate; 703. Buffer pad; 704. Second heat - insulation plate; 8. Cylinder; 9. Valve needle. Specific 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 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 Figures 1-4 , a variable - diameter hot - runner shunt plate, comprising a shunt plate body 1. A main runner 3 is arranged inside the shunt plate body 1, and a heat - insulation structure 7 is arranged at the top end of the shunt plate body 1. A sub - runner 5 is arranged at the bottom end of the main runner 3. A variable - diameter structure 6 is arranged inside the sub - runner 5. The variable - diameter structure 6 includes an adjusting groove 601. An arc seat 602 is clamped inside the adjusting groove 601. A bearing 603 is arranged at the end of the arc seat 602. A threaded rod 604 is connected to the right side of the bearing 603. Heating tubes 2 are arranged at both ends of the shunt plate body 1, and a main nozzle 4 is arranged at the top end of the shunt plate body 1. The main runner 3 penetrates into the inside of the main nozzle 4. The arc seat 602 is movably clamped with the adjusting groove 601 and the sub - runner 5, and the number of the arc seats 602 is two. The arc seat 602 is movably connected with the threaded rod 604 through the bearing 603. The threaded rod 604 is movably connected with the shunt plate body 1 through a thread groove. When the injection - mold is trial - molded, according to the results of each trial - molding, the inner diameter of the sub - runner 5 is adjusted. During adjustment, the threaded rod 604 is rotated. The threaded rod 604 rotates on the shunt plate body 1 through the thread and the thread groove, rotates to the left or to the right, and respectively drives the arc seat 602 to retract or extend in the adjusting groove 601 through the bearing 603. When the arc seat 602 extends, the diameter of the sub - runner 5 is reduced. When the arc seat 602 retracts, the diameter of the sub - runner 5 is increased. By adjusting the position of the arc seat 602, the diameter adjustment of the sub - runner 5 is realized.

[0025] Please refer to Figure 2 and Figure 5, a variable-diameter hot runner manifold. The heat insulation structure 7 includes a support sleeve 701. A first heat insulation plate 702 is arranged inside the support sleeve 701. A buffer pad 703 is arranged at the top of the first heat insulation plate 702. A second heat insulation plate 704 is arranged at the top of the buffer pad 703. A cylinder 8 is installed above the manifold body 1. A valve pin 9 is arranged at the output end of the cylinder 8. The support sleeve 701 is fixed to the top of the manifold body 1. The buffer pad 703 is fixedly connected to the second heat insulation plate 704 and the first heat insulation plate 702 respectively by glue. Through grooves matching the cylinder 8 are formed inside the first heat insulation plate 702, the buffer pad 703 and the second heat insulation plate 704. The support sleeve 701 is fixed to the top of the manifold body 1. The support sleeve 701 protects the first heat insulation plate 702, the buffer pad 703 and the second heat insulation plate 704 inside, enabling the first heat insulation plate 702 to isolate the temperature conduction of the cylinder 8, the second heat insulation plate 704 to isolate the temperature conduction of the manifold body 1, and the buffer pad 703 to reduce the pressure during the operation of the cylinder 8, so that the cylinder 8 will not be affected by temperature conduction after operation.

[0026] During use, when the injection mold is being tested, according to the results of each test, the inner diameter of the runner 5 is adjusted. During adjustment, the threaded rod 604 is rotated. The threaded rod 604 rotates on the manifold body 1 through the thread and the thread groove, rotating to the left or to the right, respectively driving the arc-shaped seat 602 to retract or extend in the adjustment groove 601 through the bearing 603. When the arc-shaped seat 602 extends, the diameter of the runner 5 is reduced. When the arc-shaped seat 602 retracts, the diameter of the runner 5 is increased. By adjusting the position of the arc-shaped seat 602, the diameter adjustment of the runner 5 is achieved. The support sleeve 701 is fixed to the top of the manifold body 1. The support sleeve 701 protects the first heat insulation plate 702, the buffer pad 703 and the second heat insulation plate 704 inside, enabling the first heat insulation plate 702 to isolate the temperature conduction of the cylinder 8, the second heat insulation plate 704 to isolate the temperature conduction of the manifold body 1, and the buffer pad 703 to reduce the pressure during the operation of the cylinder 8, so that the cylinder 8 will not be affected by temperature conduction after operation.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits, and the scope is defined by the appended claims and their equivalents.

Claims

1. A hot runner manifold with a variable diameter, comprising a manifold body (1), characterized in that: A main flow channel (3) is arranged on the inner side of the main flow channel body (1), and a heat insulation structure (7) is arranged on the top of the main flow channel (1); a branch flow channel (5) is arranged on the bottom end of the main flow channel (3), and a variable diameter structure (6) is arranged on the inner side of the branch flow channel (5); The variable diameter structure (6) comprises an adjusting groove (601), an arc seat (602) is engaged with the inner side of the adjusting groove (601), a bearing (603) is arranged at the end of the arc seat (602), and a threaded rod (604) is connected to the right side of the bearing (603); The thermal insulation structure (7) comprises a supporting sleeve (701), a first thermal insulation board (702) is arranged on the inner side of the supporting sleeve (701), a buffer pad (703) is arranged on the top end of the first thermal insulation board (702), and a second thermal insulation board (704) is arranged on the top end of the buffer pad (703).

2. The variable diameter hot runner manifold according to claim 1, characterized in that: Heating tubes (2) are arranged at both ends of the manifold body (1), and a main nozzle (4) is arranged at the top end of the manifold body (1), and the main flow channel (3) penetrates to the inside of the main nozzle (4).

3. The variable diameter hot runner manifold according to claim 1, characterized in that: The arc-shaped seat (602) is movably engaged with the adjustment groove (601) and the flow diversion channel (5), and the number of the arc-shaped seats (602) is two.

4. The variable diameter hot runner manifold according to claim 1, characterized in that: The arc seat (602) and the threaded rod (604) are movably connected via a bearing (603), and the threaded rod (604) and the diverter plate body (1) are movably connected via a threaded groove.

5. The variable diameter hot runner manifold according to claim 1, characterized in that: A cylinder (8) is installed above the diverter plate body (1), and a valve needle (9) is provided at the output end of the cylinder (8).

6. The variable diameter hot runner manifold according to claim 1, characterized in that: The support sleeve (701) is fixed to the top end of the diverter plate body (1), and the buffer pad (703) is fixedly connected to the second heat insulation plate (704) and the first heat insulation plate (702) respectively by glue.

7. The variable diameter hot runner manifold according to claim 5, characterized in that: The inner sides of the first heat insulation plate (702), the buffer pad (703) and the second heat insulation plate (704) are provided with through grooves matching the cylinder (8).

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