Hot runner device of plastic mold

Abstract

The device comprises a first splitter plate, a second splitter plate is connected to the left portion of the first splitter plate in a clamped mode, air pumps are arranged between the left portion and the right portion of the first splitter plate and the right portion of the second splitter plate, a feeding port is formed between the middle of the first splitter plate and the middle of the second splitter plate, and nozzles are connected to threaded grooves in a threaded mode. A heating assembly is installed on the rear side of the second splitter plate, clamping bolts are slidably connected between the left portions and the right portions of the first splitter plate and the second splitter plate correspondingly, first springs are connected between the clamping bolts and the first splitter plate and between the clamping bolts and the second splitter plate correspondingly, connecting rods are rotationally connected to the front sides and the rear sides of the clamping bolts correspondingly, and clamping pieces are rotationally connected to the outer sides of the connecting rods correspondingly. According to the utility model, through a connection mode that the clamping pieces are clamped with the mounting seat, the connection between the first splitter plate and the mounting seat as well as between the second splitter plate and the mounting seat is more stable, and the hot runner system can be quickly disassembled, so that the downtime caused by faults of the hot runner system can be shortened, and the plastic injection molding efficiency can be improved to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of plastic production technology, and in particular to a hot runner device for plastic molds. Background Technology

[0002] Plastic molds are tools used to manufacture plastic products. Molten plastic is injected into the mold cavity, and after it cools and solidifies, the mold is opened to remove the finished product. Hot runner systems are an important technology in plastic mold making, ensuring the plastic remains molten throughout the process from the injection molding machine nozzle to the mold cavity. In existing hot runner operations, the hot runner device is fixed to a mounting base using anchors. Heating components heat the outer wall of the nozzle, transferring heat to the plastic to keep it molten. The nozzle then injects the molten plastic into the mold, completing the plastic injection molding process. During production, vibrations may occur from the operation of various production equipment. Using anchors for fixation can lead to poor device stability, causing the hot runner system to malfunction. Furthermore, this connection method makes it difficult to quickly disassemble the hot runner system when it fails, increasing downtime and affecting injection molding efficiency.

[0003] To address the above problems, a hot runner device for plastic molds has been developed. Utility Model Content

[0004] To overcome the disadvantages of using fixed columns to fix the device, which may result in poor stability due to vibrations during the production process and prevent the hot runner system from operating normally, and the inconvenience of quick disassembly when the hot runner system malfunctions, thus increasing downtime and affecting injection efficiency, this utility model provides a hot runner device for plastic molds.

[0005] The technical solution of this utility model is as follows:

[0006] A hot runner device for a plastic mold includes a first manifold, a second manifold snapped onto the left side of the first manifold, air pumps disposed between the left and right sides of the first and second manifolds, each air pump having a threaded groove at its outlet, a feed inlet disposed between the middle of the first and second manifolds, each threaded groove having a nozzle threadedly connected to it, a heating assembly mounted on the rear side of the second manifold, and latches slidably connected between the left and right sides of the first and second manifolds, each latch located outside the adjacent air pump. The latch is connected to both the first and second diverter plates by a first spring. A connecting rod is rotatably connected to both the front and rear sides of the latch. A locking element is rotatably connected to the outer side of each connecting rod. The front locking elements are slidably connected to the first diverter plate, and the rear locking elements are slidably connected to the second diverter plate. Slide grooves are connected to the lower sides of both the left and right sides of the second diverter plate. The inner side of each locking element is slidably connected to the adjacent slide groove. A second spring is connected between the inner side of each locking element and the adjacent slide groove. A mounting base is slidably connected between adjacent left and right locking elements.

[0007] Furthermore, the feed inlet has an inverted T-shaped structure.

[0008] Furthermore, all of the nozzles are detachable connection structures.

[0009] Furthermore, the heating assembly includes a power supply, a heating sleeve, and wires. The power supply is installed on the rear side of the second diverter plate. The heating sleeve is connected to both sides of the power supply via the wires. The heating sleeve is fitted onto the adjacent nozzles, and the heating sleeve heats the adjacent nozzles.

[0010] Furthermore, the lower part of the bolt is connected to limiting blocks on both the front and rear sides to limit the movement of the connecting rod.

[0011] Furthermore, each of the latches is equipped with a circular assisting component.

[0012] By adopting the above technical solution, compared with the prior art, this utility model has the following advantages:

[0013] This invention utilizes a snap-fit ​​connection between the first and second manifold plates and the mounting base, resulting in a more stable connection and enabling rapid disassembly of the hot runner system. This reduces downtime caused by hot runner system malfunctions and improves plastic injection molding efficiency to some extent. Furthermore, the snap-fit ​​connection structure between the first and second manifold plates facilitates separation, making it easier to repair or replace the internal components of the hot runner system. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the first type of exploded three-dimensional structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the second type of exploded three-dimensional structure of this utility model.

[0017] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the present invention.

[0018] The component names and serial numbers in the figure are as follows: 1. First flow divider plate, 2. Second flow divider plate, 3. Air pump, 31. Threaded groove, 4. Feed inlet, 5. Nozzle, 6. Heating component, 7. Clamp, 8. First spring, 9. Connecting rod, 10. Clamp, 11. Slide groove, 12. Second spring, 13. Mounting base. Detailed Implementation

[0019] The preferred technical solution of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] A hot runner device for a plastic mold, such as Figures 1-4 As shown, the system includes a first diverter plate 1, with a second diverter plate 2 snapped onto its left side. Air pumps 3 are installed between the left and right sides of both the first and second diverter plates 1 and 2. Each air pump 3 has a threaded groove 31 at its outlet. A feed inlet 4, which is an inverted T-shaped structure, is located between the middle of the first and second diverter plates 1 and 2. Nozzles 5 are threadedly connected to the threaded grooves 31, and all nozzles 5 have a detachable connection structure. A heating assembly 6 is installed on the rear side of the second diverter plate 2. The heating assembly 6 includes a power supply, a heating sleeve, and wires. The power supply is connected to heating sleeves on both sides via wires. The heating sleeves are fitted onto adjacent nozzles 5, heating the adjacent nozzles 5. The first and second diverter plates 1 and 2 have threaded grooves 3 on their left and right sides. The sliding connection includes a latch 7. The lower front and rear sides of the latch 7 are connected to limiting blocks that limit the movement of the connecting rod 9. The latch 7 is equipped with a circular assisting component. The latch 7 is located on the outer side of the adjacent air pump 3. The latch 7 is connected to the first diverter plate 1 and the second diverter plate 2 by a first spring 8. The front and rear sides of the latch 7 are rotatably connected to the connecting rod 9. The outer side of the connecting rod 9 is rotatably connected to the locking piece 10. The front locking piece 10 is slidably connected to the first diverter plate 1, and the rear locking piece 10 is slidably connected to the second diverter plate 2. The lower sides of the left and right sides of the second diverter plate 2 are connected to the sliding groove 11. The inner side of the locking piece 10 is slidably connected to the adjacent sliding groove 11. The inner side of the locking piece 10 is connected to the adjacent sliding groove 11 by a second spring 12. The left and right adjacent locking pieces 10 are slidably connected to the mounting base 13.

[0021] It should be noted that plastic molds are tools used to manufacture plastic products. Molten plastic is injected into the mold cavity, and after it cools and solidifies, the mold is opened to remove the formed product. A hot runner system is an important technology in plastic molds, ensuring that the plastic remains molten throughout the process from the injection molding machine nozzle 5 to the mold cavity. During hot runner operation, plastic is injected through the feed port 4, and the air pump 3 delivers the plastic to the nozzle 5. Simultaneously, the power is turned on, and the heating jacket heats the outer wall of the nozzle 5, transferring heat to the plastic and keeping it molten. The nozzle 5 then injects the molten plastic into the plastic mold, thus completing the plastic injection molding operation. When the hot runner system malfunctions, it needs to be repaired or replaced promptly. (The last sentence about using a circular auxiliary component seems unrelated and possibly a separate point.) Lifting the latch 7 upwards compresses the first spring 8, causing the inner side of the connecting rod 9 to move upwards. This causes the locking parts 10 to move inwards under the guidance of the slide groove 11. Simultaneously, the second spring 12 is compressed, causing the first manifold 1, the second manifold 2, and the mounting base 13 to disengage from the locking state. This allows the hot runner system to be removed from the mounting base 13. This locking connection method makes the connection between the first manifold 1 and the second manifold 2 and the mounting base 13 more stable and allows for quick disassembly of the hot runner system. This reduces downtime caused by hot runner system failures and can improve plastic injection molding efficiency to some extent. At the same time, the locking connection structure of the first manifold 1 and the second manifold 2 makes it easier to separate the first manifold 1 and the second manifold 2, thus facilitating the maintenance or replacement of the internal components of the hot runner system.

[0022] The above embodiments are provided for those skilled in the art to implement or use the present invention. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope that conforms to the innovative features mentioned in the claims.

Claims

1. A hot runner device for a plastic mold, characterized in that, The system includes a first diverter plate (1), a second diverter plate (2) which is snapped onto the left side of the first diverter plate (1), and air pumps (3) which are installed between the left and right sides of the first diverter plate (1) and the second diverter plate (2). Each air pump (3) has a threaded groove (31) at its outlet. A feed inlet (4) is located between the middle of the first diverter plate (1) and the second diverter plate (2). Each threaded groove (31) is threaded with a nozzle (5). A heating assembly (6) is installed on the rear side of the second diverter plate (2). A latch (7) is slidably connected between the left and right sides of the first diverter plate (1) and the second diverter plate (2). Each latch (7) is located outside the adjacent air pump (3). The latch (7) is connected to the first diverter plate (1). A first spring (8) is connected between the diverter plate (1) and the second diverter plate (2). The front and rear sides of the latch (7) are rotatably connected to the connecting rod (9). The outer side of the connecting rod (9) is rotatably connected to the clamp (10). The clamp (10) on the front side is slidably connected to the first diverter plate (1), and the clamp (10) on the rear side is slidably connected to the second diverter plate (2). The lower sides of the left and right sides of the second diverter plate (2) are connected to the sliding groove (11). The inner side of the clamp (10) is slidably connected to the adjacent sliding groove (11). The inner side of the clamp (10) is connected to the adjacent sliding groove (11) and a second spring (12) is connected between the inner side of the clamp (10) and the adjacent sliding groove (11). The left and right adjacent clamps (10) are slidably connected to the mounting base (13).

2. The hot runner device for a plastic mold as described in claim 1, characterized in that, The feed inlet (4) has an inverted T-shaped structure.

3. The hot runner device for a plastic mold as described in claim 1, characterized in that, All nozzles (5) are detachable connection structures.

4. The hot runner device for a plastic mold as described in claim 1, characterized in that, The heating assembly (6) includes a power supply, a heating sleeve and wires. The power supply is installed on the rear side of the second diverter plate (2). The heating sleeve is connected to both sides of the power supply through the wires. The heating sleeve is fitted on the adjacent nozzles (5) and the heating sleeve heats the adjacent nozzles (5).

5. The hot runner device for a plastic mold as described in claim 1, characterized in that, The lower front and rear sides of the bolt (7) are connected to limiting blocks that limit the movement of the connecting rod (9).

6. The hot runner device for a plastic mold as described in claim 1, characterized in that, Each of the latches (7) is equipped with a circular auxiliary component.

Images