Plastic molding device for producing a plastic pipe

Abstract

The utility model discloses a kind of plastic forming devices of encapsulated plastic tube production, it includes: forming shell, the inside of the forming shell is provided with multiple forming channels, the side inner wall of the forming channel is slidably connected with limiting plate, the side of the limiting plate far from the sliding slot is fixedly connected with conical center column, the side inner wall of the forming channel is threadedly connected with sealing positioning shell, the inside of the forming channel is provided with sealing ring, the right surface of the forming shell is fixedly connected with baffle, the inside of the baffle is provided with shunt groove, the side inner wall of the forming shell is fixedly connected with support plate, by above device, it is beneficial to guarantee encapsulated plastic tube forming quality.

Description

Technical Field

[0001] This utility model relates to the field of plastic pipe technology, and in particular to a plastic molding device for producing encapsulated plastic pipes. Background Technology

[0002] Encapsulated plastic tubing is widely used in medical infusion, food packaging, and industrial sealing. These applications require tubing with high wall thickness uniformity, inner diameter accuracy, and sealing performance, as well as equipment that can meet the needs of large-scale production and multi-specification adaptation. However, current mainstream plastic molding equipment has significant shortcomings: most are single-channel designs, and even multi-channel designs suffer from uneven material supply and low efficiency due to unreasonable melt distribution, making it difficult to handle bulk orders; maintenance of core components requires complete disassembly, which is costly and time-consuming, making it difficult to quickly respond to small-batch, multi-specification production, thus restricting the quality and production efficiency of encapsulated plastic tubing. Utility Model Content

[0003] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a plastic molding device for producing encapsulated plastic tubes. This device solves the problems of low production efficiency and difficulty in scaling up production, poor tube forming accuracy and many defects, inconvenient specification adjustment and high maintenance cost of core components, making it difficult to adapt to production with multiple needs.

[0004] This utility model also provides a plastic molding apparatus for producing a packaged plastic tube as described above, comprising: a molding shell, wherein the molding shell has multiple molding channels inside, a limiting plate is slidably connected to the inner side wall of the molding channel, a conical central column is fixedly connected to the side of the limiting plate away from the sliding groove, a sealing positioning shell is threadedly connected to the inner side wall of the molding channel, a sealing ring is provided inside the molding channel, a flow divider is fixedly connected to the right surface of the molding shell, a flow divider groove is provided inside the flow divider, and a support plate is fixedly connected to the inner side wall of the molding shell. This apparatus helps to ensure the molding quality of the packaged plastic tube.

[0005] According to the present invention, a plastic molding device for producing encapsulated plastic tubes is provided. The molding channel extends through the left and right surfaces of the molding shell, and the diversion groove is connected to the molding channel. The above device facilitates the precise and smooth entry of the plastic melt conveyed by the diversion groove into the molding channel, and at the same time makes it easier to remove the molded plastic tube from the through-hole of the molding channel, thereby improving the production efficiency of encapsulated plastic tubes.

[0006] According to the present invention, a plastic molding device for producing encapsulated plastic tubes is provided with a sliding groove on the inner side wall of the molding channel, and the limiting plate is located inside the sliding groove. The above device is beneficial to limit the limiting plate to slide only along the axial direction of the molding channel, and avoid the limiting plate from shifting radially and causing the conical central column to misalign.

[0007] According to the present invention, a plastic molding device for producing encapsulated plastic tubes is provided, wherein the sealing ring is located on the left side of the limiting plate and the sealing positioning shell is located on the left side of the sealing ring. Through the above device, it is beneficial to make the sealing ring tightly fit the limiting plate and the inner wall of the molding channel by means of the squeezing action of the sealing positioning shell.

[0008] According to the present invention, a plastic molding device for producing encapsulated plastic tubes is provided with a rotating hole on the left surface of the sealing positioning shell, and the conical central column is located at the center of the sealing positioning shell. The above device facilitates the operation of the sealing positioning shell by means of the rotating hole.

[0009] According to the present invention, a plastic molding device for producing encapsulated plastic tubes has a support plate located on the right side of the molding shell, and the support plate covers the flow divider plate. This device helps to ensure that the melt is evenly distributed to the molding channel and improves the stability of the device operation.

[0010] According to the present invention, a plastic molding device for producing encapsulated plastic tubes is provided, wherein an input pipe is fixedly connected to the right surface of the support plate and the input pipe is connected to the support plate. The above device helps to ensure that the input pipe is precisely connected to the distribution tank, and ensures that the high-temperature plastic melt is stably and leak-freely transported to the distribution plate, laying the foundation for the uniform distribution of the melt in the future.

[0011] Beneficial effects:

[0012] The plastic molding device for producing encapsulated plastic tubes in this technical solution achieves simultaneous production of multiple tubes through the cooperation of multiple molding channels and diversion grooves, greatly improving efficiency; the tapered central column and limiting plate can be adjusted to meet different inner diameter requirements, ensuring uniform wall thickness and accurate dimensions of the plastic tubes; all components are stably installed and easy to operate, reducing production errors and costs, and ensuring the molding quality of encapsulated plastic tubes. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0014] Figure 1 Left view of the plastic molding device for producing plastic tubes according to this utility model;

[0015] Figure 2 Right view structural diagram of the plastic molding device for producing encapsulated plastic tubes according to this utility model;

[0016] Figure 3 This is an internal structural diagram of the plastic molding device for producing encapsulated plastic tubes according to this utility model.

[0017] Figure 4 Plastic molding apparatus for producing encapsulated plastic tubes according to this utility model Figure 3 Enlarged view of point D in the middle;

[0018] Figure 5 This is a cross-sectional structural diagram of the plastic molding device for producing plastic tubes according to this utility model.

[0019] Legend:

[0020] 1. Molding shell; 2. Support plate; 3. Conical central column; 4. Sealing and positioning shell; 5. Rotating hole; 6. Input pipe; 7. Slide groove; 8. Limiting plate; 9. Sealing ring; 10. Molding channel; 11. Diverter plate; 12. Diverter groove. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-5 This utility model discloses a plastic molding device for producing encapsulated plastic tubes, comprising: a molding shell 1, with multiple molding channels 10 disposed inside the molding shell 1, the molding channels 10 penetrating the left and right surfaces of the molding shell 1, a limiting plate 8 slidably connected to the inner side wall of the molding channel 10, a groove 7 disposed on the inner side wall of the molding channel 10, the limiting plate 8 located inside the groove 7, a conical central column 3 fixedly connected to the side of the limiting plate 8 away from the groove 7, a sealing ring 9 disposed inside the molding channel 10, the sealing ring 9 located to the left of the limiting plate 8, and a thread on the inner side wall of the molding channel 10. A sealing positioning shell 4 is connected to the left side of the sealing ring 9. A rotating hole 5 is provided on the left surface of the sealing positioning shell 4. A conical central column 3 is located at the center of the sealing positioning shell 4. A flow divider plate 11 is fixedly connected to the right surface of the forming shell 1. A flow divider groove 12 is provided inside the flow divider plate 11. The flow divider groove 12 is connected to the forming channel 10. A support plate 2 is fixedly connected to the inner side wall of the forming shell 1. The support plate 2 is located on the right side of the forming shell 1. The support plate 2 covers the flow divider plate 11. An input pipe 6 is fixedly connected to the right surface of the support plate 2. The input pipe 6 is connected to the support plate 2.

[0023] Specifically, the molding shell 1 serves as the main frame, providing installation support and enclosed space for all molding components such as the molding channel 10, the limiting plate 8, and the support plate 2, ensuring stability during the molding process. The molding channel 10 is the molding cavity for the plastic tube; its inner wall shape directly determines the outer diameter and surface precision of the plastic tube. The sliding groove 7 on its inner side wall serves as a guide rail for the limiting plate 8, restricting it to slide only axially to avoid radial displacement. The limiting plate 8 is both a positioning and sliding adjustment component for the conical central column 3 (indirectly cooperating with the conical central column 3). The conical central column 3, which controls the wall thickness of the plastic tube, also helps to fix the sealing ring 9 to prevent the melt from leaking from the side. It serves as the inner hole forming component of the plastic tube. The insertion depth is adjusted by the sliding limiting plate 8 to adapt to different inner diameter requirements, forming a double-layer space within the forming channel 10, with an outer layer fixing the outer diameter and an inner layer fixing the inner diameter and wall thickness. The sealing ring 9 within the forming channel is located on the left side of the limiting plate and the right side of the sealing positioning shell 4. It fills the gap through extrusion deformation to prevent leakage of high-temperature plastic melt and maintain stable forming pressure. The sealing positioning shell 4 is connected to the inner wall of the forming channel by screws... The sealing ring 9 is connected by a clockwise rotation, which compresses it to the right, enhancing its sealing effect against the limiting plate 8 and the inner wall of the molding channel 10. The rotating hole 5 on its left surface serves as an operating interface, facilitating the insertion of tools to rotate and adjust the position of the sealing positioning shell 4 without interfering with the axial movement of the conical central column. The flow divider 11 fixed on the right surface of the molding shell 1 is a plastic melt distribution component. The radial or branched flow dividers 12 (melt channels) inside are connected at one end to the outlet of the input pipe 6 and at the other end to the inlet of each molding channel, guiding the melt to enter each channel smoothly and evenly. The molding channel reduces flow resistance and ensures a consistent melt supply to each molding channel 10, avoiding uneven plastic tube wall thickness and material shortage. The diverter plate 11 is firmly fixed to the right side of the molding shell 1 by the support plate 2 (to prevent displacement caused by melt pressure). The support plate 2 also provides an installation base for the input pipe 6, ensuring precise connection between the input pipe 6 and the diverter 12 to prevent leakage. The input pipe 6 serves as a plastic melt conveying channel, with one end connected to an external extruder (a source of high-temperature melt) and the other end passing through the support plate 2 and connecting to the diverter 12, ensuring stable delivery of molten plastic for molding.

[0024] Working principle: The external extruder melts plastic granules into a high-temperature melt, which is precisely connected to the inlet of the diversion plate 11 through the input pipe 6 (through the support plate 2) and enters the diversion groove 12 without leakage. The melt is evenly distributed to multiple forming channels 10 of the forming shell 1 by the branch structure of the diversion groove 12, realizing the synchronous production of multiple tubes. The operator uses a wrench to rotate the sealing positioning shell 4 through the rotating hole 5. Its thread fits the sealing ring 9 tightly against the limiting plate 8 and the inner wall of the forming channel 10, sealing the left side of the forming channel 10. At the same time, the limiting plate 8 in the sliding groove 7 drives the conical central column 3 to adjust the insertion depth to determine the inner hole and wall thickness of the plastic tube, forming a tubular cavity. The melt fills the cavity under the pressure of the extruder and pushes the finished product out from the left side of the forming channel 10, completing a single forming.

[0025] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A plastic molding apparatus for producing encapsulated plastic tubes, characterized in that, include: A molding shell (1) is provided inside, with multiple molding channels (10). A limiting plate (8) is slidably connected to the inner side wall of the molding channel (10). A conical central column (3) is fixedly connected to the side of the limiting plate (8) away from the slide groove (7). A sealing positioning shell (4) is threadedly connected to the inner side wall of the molding channel (10). A sealing ring (9) is provided inside the molding channel (10). A diversion plate (11) is fixedly connected to the right surface of the molding shell (1). A diversion groove (12) is provided inside the diversion plate (11). A support plate (2) is fixedly connected to the inner side wall of the molding shell (1).

2. The plastic molding apparatus for producing encapsulated plastic tubes according to claim 1, characterized in that, The forming channel (10) extends through the left and right surfaces of the forming shell (1), and the diversion groove (12) is connected to the forming channel (10).

3. The plastic molding apparatus for producing encapsulated plastic tubes according to claim 1, characterized in that, The inner side wall of the forming channel (10) is provided with a groove (7), and the limiting plate (8) is located inside the groove (7).

4. The plastic molding apparatus for producing encapsulated plastic tubes according to claim 1, characterized in that, The sealing ring (9) is located on the left side of the limiting plate (8), and the sealing positioning shell (4) is located on the left side of the sealing ring (9).

5. The plastic molding apparatus for producing encapsulated plastic tubes according to claim 1, characterized in that, The left surface of the sealing positioning shell (4) is provided with a rotating hole (5), and the conical central column (3) is located at the center of the sealing positioning shell (4).

6. The plastic molding apparatus for producing encapsulated plastic tubes according to claim 1, characterized in that, The support plate (2) is located on the right side of the molded shell (1) and covers the diversion plate (11).

7. The plastic molding apparatus for producing encapsulated plastic tubes according to claim 1, characterized in that, An input pipe (6) is fixedly connected to the right surface of the support plate (2), and the input pipe (6) is connected to the support plate (2).

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