Structure and molding method of a personalized custom-shaped plastic hose

Abstract

This invention relates to the field of packaging container technology, and discloses a structure and molding method for a personalized custom-shaped plastic hose. The structure includes an outer tube, a tube head, and multiple inner tubes. A support and partition assembly is provided inside the outer tube. This assembly includes an inner connector connected to the inner side of the tube head and a support tube. The support tube has an axially shaped groove forming a support piece. A partition block passes through the groove and is sealed to the inner wall of the outer tube. The outer wall of the support tube is also sealed to the inner wall of the outer tube, thus forming multiple airtight, independent chambers within the outer tube. Each chamber contains an inner tube and is connected to the tube head extrusion hole via a discharge pipe. During use, pressing the corresponding area pressurizes the target chamber for material discharge. Releasing the pressure allows for independent air replenishment and reset, suppressing cross-pressure and cross-discharge and improving discontinuous discharge. The flattened narrow area at the sealing end clamps and restricts the connection point to suppress backflow.

Description

Technical Field

[0001] This invention relates to the field of packaging container technology, and in particular to the structure and molding method of a personalized custom-shaped plastic hose. Background Technology

[0002] Plastic tubing packaging is widely used in cosmetics, daily chemicals, and topical pharmaceutical preparations due to its lightweight, compressibility, low manufacturing cost, portability, and suitability for filling and dispensing semi-fluid materials such as pastes, creams, and gels. Existing plastic tubing typically consists of an outer tube, a tube head, and a sealing end. Users squeeze the outer tube to expel the internal material through the tube head outlet. As the material is gradually consumed, the internal volume of the tubing decreases, accompanied by air entry or a rebound process, making issues such as dispensing stability, backflow, and residue more prominent.

[0003] To meet the needs of different formulation combinations, zoned use, or multifunctional personalized integration, existing technologies have also developed dual-cavity or multi-cavity hose structures. For example, by setting partitions, parallel inner bags, or multiple outlet channels, two or more different materials can be stored separately in the same packaging container, and can be extruded simultaneously or selectively as needed during use. However, multi-chamber structures face more complex technical challenges in actual use and manufacturing compared to single-chamber hoses. On the one hand, if there is gas communication or inter-chamber pressure coupling within the outer tube, when a certain area of ​​a chamber is squeezed, the pressure is easily transmitted between multiple chambers, causing the inner bag / inner tube of non-target chambers to be simultaneously pressurized and discharged, resulting in a "press one chamber, discharge multiple chambers" phenomenon of sequential pressure and discharge, making it difficult to achieve stable and controllable single-chamber selective discharge. On the other hand, after the hose is released from pressure, it needs to spring back to reset for the next extrusion. If the reset air supply path and the material outlet channel are not effectively isolated, air can easily be drawn back through the outlet or outlet channel during the springback process, damaging the material column in the outlet channel. This leads to the problem of "squeezing air first, then discharging material" and intermittent discharge when used again, and this problem is more obvious in multi-chamber structures.

[0004] Furthermore, when hoses employ a dual-lumen or multi-lumen structure to store different materials separately, the inner tube often requires partitions or support frames to divide the internal space into multiple relatively independent irregularly shaped spaces. Because these irregularly shaped cavities often contain corners, narrow slits, and locally confined areas, these areas struggle to achieve effective compression strokes during outer tube compression, resulting in insufficient compression force transmission. This makes it easier for compression dead zones to form and increases residue; these dead zone and residue problems become more pronounced in the later stages of material use.

[0005] While existing technologies can improve discharge stability by setting up pump heads, complex valves, or special inner bag structures, these often result in complex structures, a large number of parts, increased costs, and are not easily compatible with multi-chamber discharge requirements. At the same time, although using high-resilience materials or reinforced resilience structures can improve hose reset performance, if the air supply path is not isolated from the material channel, it may still cause backflow of air, leading to intermittent discharge. Furthermore, in multi-chamber structures, it is even more difficult to ensure the reliability of single-chamber discharge selection.

[0006] Therefore, there is an urgent need for a multi-cavity plastic hose solution that is structurally reliable and easy to mold and manufacture. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing multi-chamber plastic hoses, such as inter-chamber pressure leading to material leakage and complex manufacturing and assembly, by proposing a structure and molding method for personalized custom-shaped plastic hoses.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a structure for a personalized custom-made irregular-shaped plastic hose, comprising:

[0009] The outer tube has a tube head at one end, and a protective cap at the end of the tube head. The other end of the outer tube is a sealed end.

[0010] Multiple inner tubes, each used to store different materials;

[0011] The support and partition assembly is installed inside the outer tube body. The support and partition assembly includes an inner connector connected to the inner side of the tube head and a support tube fixedly connected to the inner connector. The tube wall of the support tube has an axial groove, so that two rows of support plates are formed on both sides of the groove on the support tube.

[0012] The inner wall of the support tube is provided with a partition block at the position facing the irregular groove. The partition block passes through the irregular groove and is fixedly connected to the inner wall of the outer tube.

[0013] The inner wall of the outer tube is fixedly connected to the outer surface of the support tube and the surface of the partition block to form multiple independent chambers that are airtightly isolated from each other inside the outer tube, and one inner tube is provided in each independent chamber;

[0014] Multiple extrusion holes and multiple outlet pipes corresponding to the extrusion holes are provided at the pipe head. Each outlet pipe is connected to the corresponding inner pipe body and is used to export the material inside the corresponding inner pipe body.

[0015] Multiple one-way ventilation components are installed at the pipe head and are connected to each independent chamber;

[0016] The outer tube has multiple pressing areas along its circumference corresponding to each independent chamber. When in use, pressing is applied to a pressing area of ​​the outer tube to cause elastic deformation of the corresponding support plate and increase the pressure in the corresponding independent chamber, thereby compressing the inner tube in the independent chamber and causing the material to be extruded from the extrusion hole through the corresponding outlet pipe. After releasing the pressure, the one-way ventilation component allows outside air to enter the corresponding independent chamber to achieve chamber reset and support repeated pressing for continuous material discharge.

[0017] Preferably, the outer surface of the outer tube is provided with pressing marks corresponding to each pressing area; since each independent chamber is airtightly isolated from each other, when one or more pressing areas are squeezed, the pressure in the independent chamber that is not squeezed is less affected by the squeezing action, thereby inhibiting the discharge of material from its inner tube.

[0018] Preferably, the surface of the inner tube is bonded and fixed to the non-supporting area of ​​the inner wall of the support tube. The connection position between the outlet pipe and the corresponding inner tube is set in the flattened narrow area near the encapsulation end of the outer tube. The support piece near the encapsulation end of the outer tube is pressed against the surface of the inner tube by the squeezing force of the flattened narrow area, forming a clamping restriction on the connection position to suppress material backflow after the pressure is released. When the outer tube is pressed to discharge material, the clamping restriction of the flattened narrow area is weakened or released to allow the material in the inner tube to enter the outlet pipe and be extruded through the extrusion hole.

[0019] Preferably, the support and partition assembly includes two mirror-symmetrical inner connectors and support tubes. Each of the two support tubes is provided with a partition block and is sealed to the inner wall of the outer tube, forming four independent chambers. The outer tube is provided with four pressing areas circumferentially.

[0020] The partition block is a partition plate or partition rib that extends gradually along the axial direction. The partition block forms a continuous sealing interface with the inner wall of the outer tube, and the non-support plate area of ​​the outer wall of the supporting tube forms a continuous sealing interface with the inner wall of the outer tube, so as to improve the airtight isolation effect of the independent chamber.

[0021] Preferably, the one-way ventilation assembly includes a connecting pipe fixed to the pipe head. The inner end of the connecting pipe facing the independent chamber is provided with a flexible rubber sleeve, which is duckbill-shaped or flat. When pressed, the positive pressure inside the chamber causes the flexible rubber sleeve to close, preventing air from escaping. When the pressure is released, the negative pressure inside the chamber allows outside air to enter the corresponding independent chamber. An axially movable insert is inserted into the outer end of the connecting pipe. When the insert moves inward and is inserted into the flexible rubber sleeve, it prevents the flexible rubber sleeve from closing, thus switching the one-way ventilation assembly from a one-way air supply state to a non-one-way state or a normally open state.

[0022] Preferably, when the one-way ventilation component is in the normally open state, the partition block limits the radial compression of the outer tube, preventing the outer tube from being completely flattened in the corresponding area; the support plate can extend to both sides of the partition block and press the inner tube during the pressing stroke, so that material extrusion can still be achieved in the normally open state.

[0023] This invention also proposes a method for molding personalized plastic hoses, comprising the following steps:

[0024] (1) Fabrication of support and partition components: Provide a support tube blank, and process a groove along the axial direction on the support tube wall. The groove is an irregular groove, so that two rows of support pieces integrally formed from the support tube wall are formed on both sides of the groove; install partition blocks on the inner wall of the support tube at the corresponding groove position, so that the partition blocks extend outward through the groove to the outside of the support tube.

[0025] (2) Fixing and shaping of the partition block: The partition block is fixed to the support tube by means of adhesive bonding, hot melt welding or ultrasonic welding, so that the partition block and the support tube form a stable connection and the partition block is exposed through the groove in the assembly state.

[0026] (3) Assembly of support partition component and pipe head: The inner connector is fixedly connected to the support pipe to form a support partition component, and the inner connector is inserted and fixed inside the pipe head so that the inner connector and the inside of the pipe head are interference fit or sealed with glue to form a sealed connection.

[0027] (4) Installation and positioning of inner tubes to prevent clumping: Multiple inner tubes are placed into the positions of each chamber defined by the support and partition components, and the outer surface of the inner tubes is fixed to the non-supported areas of the inner wall of the support tube by spot bonding, line bonding or surface bonding to position the inner tubes and prevent them from clumping together in the chambers.

[0028] (5) Outgoing connection: Connect and fix each inner tube to the corresponding outgoing pipe at the pipe head;

[0029] (6) Forming independent chambers: An adhesive layer or welding layer is provided on the non-support plate area of ​​the outer wall of the support tube and the outer surface of the partition block. The outer tube body is sleeved on the outside of the support and partition assembly and fixedly connected to the tube head, so that the contact interface between the inner wall of the outer tube body and the non-support plate area of ​​the outer wall of the support tube, as well as the contact interface between the partition block and the inner wall of the outer tube body, forms a continuous sealed connection, thereby forming multiple airtight and isolated independent chambers inside the outer tube body.

[0030] (7) Integral hot melt sealing of filling and packaging: Keep the end of each inner tube open near the packaging end of the outer tube, and fill each inner tube with material; after filling, heat melt seal the packaging end of the outer tube so that the tail end of the outer tube, the open end of the inner tube and the support tube form an integrated seal at the packaging end.

[0031] The present invention has the following beneficial effects:

[0032] 1. The hose structure proposed in this invention uses a partition block that passes through a shaped groove and forms a continuous, sealed connection with the inner wall of the outer tube. Simultaneously, the outer surface of the support tube also forms a continuous, sealed connection with the inner wall of the outer tube, creating multiple airtight, independent chambers within the outer tube. Therefore, when a certain pressing area is pressed around the outer tube, pressure is only established in the corresponding independent chamber and acts on the tube within that chamber to achieve material discharge. The pressure in the other independent chambers is minimally affected. Structurally, this solves the common problem of pressure overflow in multi-chamber hoses where "pressing one chamber results in simultaneous discharge from multiple chambers," thus enabling single-chamber or simultaneous discharge from multiple chambers.

[0033] 2. The hose structure proposed in this invention is equipped with a one-way ventilation component in each independent chamber. When pressed, the one-way ventilation component is closed to prevent exhaust. When released, only outside air is allowed to enter the corresponding independent chamber to achieve rebound and reset. Since the air supply path and the material outlet pipeline are independent of each other, the phenomenon of "air being squeezed out first, material being discharged later, and intermittent material discharge" caused by the backflow of air through the extrusion hole / outlet pipeline during the reset process of the multi-chamber hose is avoided.

[0034] Furthermore, the support plate is integrally formed from the support tube wall and undergoes controllable elastic deformation upon pressing, converting local pressing force into volume changes and air pressure increments in the corresponding chambers. Combined with independent air replenishment and reset, each shallow press effectively builds up pressure and drives material into the outlet pipe, thus achieving stable output of "multiple shallow presses, each with material output" in multi-chamber scenarios. This reduces the force required per press and improves the controllability of dosage control. Compared to existing multi-chamber packaging, this invention limits "reset and air replenishment" to the chamber side rather than the material channel side, fundamentally avoiding intermittent material output caused by backflow into the feed path. Simultaneously, users do not need to knead and search for material accumulation points; the outer tube can return to its original shape after releasing the pressure, reducing local creases and stress concentrations that can lead to breakage due to prolonged collapse of the outer tube, thereby improving structural durability and operational stability.

[0035] 3. The hose structure proposed in this invention places the connection point between the outlet pipe and the inner tube in the flattened and narrow area of ​​the encapsulation end. The encapsulation end structure clamps the support plate and / or the inner tube, ensuring that the connection point is in a restricted conductive or closed state after the pressure is released. This suppresses material backflow along the outlet pipe and maintains the stability of the material column within the outlet pipe. Upon re-pressing, the clamping restriction weakens or is released to restore smooth material discharge, solving the intermittent problem more common in multi-cavity hoses: "retraction after parking, requiring air extraction / multiple extractions before material discharge." Simultaneously, when there is less material inside, because the support plate has a flexible travel and is not fully bonded to the inner wall of the outer tube, it can extend to the dead-angle areas on both sides of the partition block and compress the inner tube during pressing. This allows effective compression of the dead-angle areas of the chamber and areas of the outer tube that are difficult to press directly, thereby improving the fullness of material discharge and reducing residual material. Compared with existing flexible tubes that rely on kneading and squeezing, resulting in obvious dead zones, this invention improves both backflow and residue issues through a synergistic structure that combines clamping and limiting at the encapsulation end with extended support sheet coverage.

[0036] 4. The flexible tube structure proposed in this invention features a support tube with an axially slotted support plate. The irregularly shaped slot provides an assembly channel for the exposed partition block to pass through and achieve a sealed connection with the inner wall of the outer tube, while also facilitating the arrangement and positioning of the inner tube. An adhesive or welded layer is applied to the outer surface of the support tube and the surface of the partition block to form a continuous sealing interface with the inner wall of the outer tube, thereby quickly forming multiple independent chambers. This structure makes the sealing process of multi-chamber compartments easier to achieve, improves assembly consistency, and is beneficial for large-scale manufacturing. Compared with existing multi-chamber compartment structures, this invention provides an operable sealing interface through the exposed partition block, reducing the dependence of compartment sealing on assembly accuracy and process complexity, and simplifying its molding process. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the exploded structure of the plastic hose proposed in this invention. Figure 1 .

[0038] Figure 2 This is a schematic diagram of the exploded structure of the plastic hose proposed in this invention. Figure 2 .

[0039] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the plastic hose proposed in this invention.

[0040] Figure 4 This is a schematic diagram showing the state of the support tube after being compressed and deformed by the outer tube body after encapsulation.

[0041] Figure 5 This is a three-dimensional structural diagram of the pipe head proposed in this invention.

[0042] Figure 6 This is a side cross-sectional view of the plastic hose proposed in this invention.

[0043] Figure 7 This is a schematic diagram of the cross-sectional structure of the plastic hose proposed in this invention.

[0044] Figure 8 This is a top-section schematic diagram of the plastic hose proposed in this invention.

[0045] Figure 9 This is a schematic diagram of a partial cross-sectional structure of the support tube proposed in this invention.

[0046] In the picture:

[0047] 100. Outer tube body; 101. Tube head; 102. Protective cap; 103. Extrusion orifice;

[0048] 200. Inner tube body; 201. Outlet pipe;

[0049] 301. Internal connector; 302. Support tube; 303. Irregular groove; 304. Support plate; 305. Divider block;

[0050] 401. Connecting pipe; 402. Flexible rubber sleeve; 403. Embedded pipe fitting. Detailed Implementation

[0051] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0052] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0053] Example 1

[0054] like Figures 1-9 As shown, this embodiment provides a structure for a personalized custom-shaped plastic hose, including an outer tube body 100, a tube head 101, a protective cap 102, multiple extrusion holes 103, multiple inner tube bodies 200, multiple outlet pipes 201, and a support and partition assembly.

[0055] refer to Figure 3The outer tube 100 is a compressible and repositionable plastic tube, with a tube head 101 at one end and a protective cap 102 threaded onto the end of the tube head 101. The other end of the outer tube 100 is a sealed end (heat-sealed end). Multiple inner tubes 200 are used to store different materials. Each inner tube 200 can be a thin film bag or a flexible capsule structure, and the material inside can be cosmetic cream, ointment, or gel, etc.

[0056] refer to Figure 4 A support and partition assembly is disposed inside the outer tube 100. The support and partition assembly includes an inner connector 301 and a support tube 302. The inner connector 301 is connected to the inner side of the tube head 101, and the support tube 302 is fixedly connected to the inner connector 301. A shaped groove 303 is formed along the axial direction on the wall of the support tube 302, so that two rows of support plates 304 are formed on both sides of the shaped groove 303. A partition block 305 is provided on the inner wall of the support tube 302 at the position facing the shaped groove 303. The partition block 305 passes through the shaped groove 303 and is fixedly connected to the inner wall of the outer tube 100.

[0057] refer to Figure 1 , Figure 2 The inner wall of the outer tube 100 is fixedly connected (e.g., by adhesive or welding) to the outer surface of the support tube 302 and the surface of the partition block 305, thereby forming multiple airtight and isolated independent chambers inside the outer tube 100. Each independent chamber is provided with an inner tube 200, and each inner tube 200 is connected to the corresponding extrusion hole 103 at the tube head 101 through the outlet pipe 201, for exporting the material inside the corresponding inner tube 200.

[0058] Multiple one-way ventilation components are also installed at pipe head 101. Each one-way ventilation component is connected to an independent chamber to achieve independent air replenishment and reset of each independent chamber.

[0059] In use, the outer tube 100 has multiple pressing areas along its circumference corresponding to each independent chamber. The user applies pressure to a specific pressing area of ​​the outer tube 100, causing the corresponding support plate 304 to elastically deform and increasing the pressure within the corresponding independent chamber. This pressure compresses the inner tube 200 within that independent chamber, and the material is extruded through the corresponding outlet pipe 201 from the corresponding extrusion hole 103. After releasing the pressure, the one-way ventilation component allows outside air to enter the corresponding independent chamber, resetting the chamber and supporting repeated pressing for continuous material discharge.

[0060] In this embodiment, by passing the partition block 305 through the groove and sealing it with the inner wall of the outer tube 100, and by sealing the support tube 302 with the inner wall of the outer tube 100, multiple independent chambers are formed that are airtightly isolated from each other. This can effectively reduce the pressure interference to other chambers when pressing a certain chamber, thereby achieving selective discharge under multi-chamber conditions.

[0061] Example 2

[0062] Based on Embodiment 1, this embodiment further defines the configuration of the supporting partition component, referring to... Figure 4 , Figure 6 The support and partition assembly includes two mirror-symmetrically arranged inner connectors 301 and support tubes 302. Each support tube 302 contains a partition block 305, which is sealed to the inner wall of the outer tube 100, forming four independent chambers. The outer tube 100 has four corresponding pressing areas circumferentially arranged: a first pressing area, a second pressing area, a third pressing area, and a fourth pressing area (corresponding to...). Figure 6 The numbers are labeled #1, #2, #3, and #4.

[0063] By using two mirror-symmetrically arranged support tubes 302, four relatively independent workstation spaces can be formed inside the outer tube 100, which facilitates the placement of four inner tubes 200 respectively. This is suitable for personalized combinations of four types of materials, and some chambers can be selected for filling with the same material as needed to achieve incremental or spare capacity.

[0064] Furthermore, the outer surface of the outer tube 100 is provided with pressing marks corresponding to each pressing area; the pressing marks can be text, patterns, color marks, printed marks or combinations thereof, used to indicate the material type or function corresponding to each pressing area, so as to facilitate user identification and selection; since each independent chamber is airtightly isolated from each other, when one or more pressing areas are squeezed, the pressure in the independent chamber that is not squeezed is less affected by the squeezing action, thereby suppressing the discharge of material from its inner tube 200.

[0065] The multiple independent chambers of this invention can be pre-configured and pre-filled by the manufacturer during the production process, enabling personalized product combinations. For example, the manufacturer can pre-determine the type, function, or formula of the material to be filled in each independent chamber (such as repair, moisturizing, sun protection, isolation, different shades, etc.) according to different consumer groups, skin types, or usage scenarios. During the filling process, the corresponding material is filled into the corresponding inner tube 200 and then sealed to form the finished product. Simultaneously, pressing markings (text / patterns / colors / printed marks, etc.) corresponding to each pressing area can be provided on the outer surface of the outer tube 100 to indicate the type or function of the material in each chamber. During use, consumers only need to press the corresponding pressing area to selectively extrude a single material, or simultaneously press multiple pressing areas to extrude multiple materials at the same time, meeting the needs of mixed use, different steps, or different combinations.

[0066] Example 3

[0067] Based on Example 1 or Example 2, this example provides a detailed description of the one-way ventilation assembly; see reference Figure 5The one-way ventilation assembly includes a connecting pipe 401 fixed on the pipe head 101. The inner end of the connecting pipe 401 facing the independent chamber is provided with a flexible rubber sleeve 402, which is a duckbill-shaped or flat structure.

[0068] When the user presses the outer tube 100, positive pressure is generated in the corresponding independent chamber. This positive pressure causes the flexible sleeve 402 to close, preventing air from escaping from the chamber. When the user releases the pressure, the corresponding independent chamber rebounds, generating negative pressure. External air pushes the flexible sleeve 402 open, and air enters the independent chamber through the connecting pipe 401, thus achieving independent air replenishment and reset of the chamber. Since the air replenishment path and the outlet pipe 201 are independent of each other, the probability of intermittent material discharge caused by backflow of air through the extrusion hole 103 or the outlet pipe 201 during the reset process can be reduced.

[0069] An axially movable insert fitting 403 is tightly fitted into the outer end of the connecting pipe 401. The insert fitting 403 can move axially relative to the connecting pipe 401. In use, the user can use a thin rod, a pin, or a similar tool to press the pressing end of the insert fitting 403, so that the insert fitting 403 is pushed inward along the axial direction of the connecting pipe 401 to a predetermined position.

[0070] When the embedded tube 403 moves inward and inserts into the flexible sleeve 402, the embedded tube 403 prevents the flexible sleeve 402 from closing, causing the one-way ventilation component to switch from a one-way air supply state to a non-one-way state or a normally open state. This setting allows for more direct communication between the independent chamber and the outside world in the later stages of material handling or under specific usage conditions, making it easier for users to squeeze out residual material through continuous compression.

[0071] Example 4

[0072] Based on any of Examples 1 to 3, this example further explains the anti-back-suction structure at the packaging end; such as Figure 7 , Figure 8 As shown, the connection point between the outlet conduit 201 and the corresponding inner tube 200 is located in the flattened narrow region A near the encapsulation end of the outer tube 100. After heat sealing, the encapsulation end forms a relatively narrow region A. Under the extrusion pressure in this region, the support piece 304 near the encapsulation end is pressed against the surface of the inner tube 200, so that the connection point is in a restricted conductive state or tends to be closed.

[0073] When the pressure is released, the clamping restriction of the flattened narrow region A at the connecting position can inhibit the backflow of material along the outlet pipe 201, maintaining the stability of the material column within the outlet pipe 201. When the pressure is applied again for discharge, the clamping restriction of the flattened narrow region A weakens or is released with local deformation, allowing the material in the inner tube 200 to enter the outlet pipe 201 and be extruded through the extrusion hole 103, thereby improving the intermittent problem of "air being extruded first, then material being discharged" after standing. Figure 7As shown, when the surface of the outer tube 100 is pressed in the F1 direction, the tail of the outer tube 100 deforms in the F2 direction, that is, the clamping restriction of the flattened narrow area A is weakened or released with the local deformation.

[0074] In addition, such as Figure 6 As shown, the support plate 304 is integrally formed from the wall of the support tube 302, and is a flexible elastic plate structure that is not fully bonded and fixed to the inner wall of the outer tube 100. When pressed, the support plate 304 can extend to both sides of the partition block 305 and compress the inner tube 200, so that the corners of the chamber and the areas of the outer tube 100 that are not easy to be directly pressed also receive an effective squeezing effect, thereby improving the fullness of material discharge and reducing residual material.

[0075] It should be noted that when the one-way ventilation component is in the one-way air replenishment state, pressing the outer tube 100 can increase the pressure in the corresponding independent chamber and drive the material to be extruded. After releasing the pressure, the outer tube 100 can achieve shape restoration, reducing the local creases and stress concentration caused by the outer tube 100 being in a collapsed state for a long time, thereby improving structural durability and service stability. When the material in the inner tube 200 is reduced to a certain extent, the one-way ventilation component can be switched from the one-way air replenishment state to the non-one-way state or the normally open state. This will cause the embedded tube 403 to move inward and be inserted into the flexible sleeve 402 to prevent the flexible sleeve 402 from closing, thereby changing the one-way characteristic of the air replenishment valve. In this state, the user can squeeze the corresponding pressing area to make the support plate 304 exert a more direct squeezing effect on the inner tube 200. When pressing, the support plate 304 can extend to the dead corner area on both sides of the partition block 305 and press the inner tube 200, so that the dead corner of the chamber and the area of ​​the outer tube 100 that is not easy to press directly can also obtain an effective squeezing effect, so as to promote the discharge of residual materials and improve the squeezing effect.

[0076] Example 5

[0077] This embodiment provides a method for molding a personalized, customized multi-cavity plastic hose, including the following steps:

[0078] (1) Fabrication of support and partition components: Provide a blank of support tube 302, and process a groove along the axial direction on the wall of support tube 302. The groove is a special-shaped groove 303, so that two rows of support pieces 304 integrally formed from the wall of support tube 302 are formed on both sides of the groove; install partition blocks 305 on the inner wall of support tube 302 at the corresponding groove position, so that partition blocks 305 extend outward from the groove through the groove.

[0079] (2) Fixing the partition block 305: The partition block 305 is fixed inside the support tube 302 by means of adhesive bonding, hot melt welding or ultrasonic welding, so that the partition block 305 and the support tube 302 form a stable connection and the partition block 305 is exposed through the groove in the assembly state.

[0080] (3) Assembly of the support partition assembly and the pipe head 101: The inner connector 301 is fixedly connected to the support pipe 302 to form a support partition assembly, and the inner connector 301 is inserted and fixed inside the pipe head 101 so that the inner connector 301 and the inner side of the pipe head 101 are interference fit or sealed with glue to form a sealed connection.

[0081] (4) Installation and positioning of inner tube 200 to prevent clumping: Multiple inner tubes 200 are placed into the positions of each chamber defined by the support and partition components, and the outer surface of the inner tube 200 is fixed to the non-support plate 304 area of ​​the inner wall of the support tube 302 by spot bonding, line bonding or surface bonding, so as to position the inner tube 200 and prevent the inner tubes 200 from clumping together in the chamber.

[0082] (5) Outgoing connection: Connect and fix each inner tube body 200 to the corresponding outgoing pipe 201 at the pipe head 101.

[0083] (6) Forming independent chambers: An adhesive layer or welding layer is provided on the non-support piece 304 area of ​​the outer wall of the support tube 302 and the outer surface of the partition block 305. The outer tube body 100 is sleeved on the outside of the support and partition assembly and fixedly connected to the tube head 101, so that a continuous sealed connection is formed at the contact interface between the inner wall of the outer tube body 100 and the non-support piece 304 area of ​​the outer wall of the support tube 302, and between the partition block 305 and the inner wall of the outer tube body 100, thereby forming multiple airtight independent chambers inside the outer tube body 100.

[0084] (7) Integral heat-sealing of filling and packaging: Keep the end of each inner tube 200 open near the packaging end of the outer tube 100, and fill each inner tube 200 with material; after filling, heat-seal the packaging end of the outer tube 100 so that the tail end of the outer tube 100, the open end of the inner tube 200 and the support tube 302 form an integrated seal at the packaging end.

[0085] It should be noted that before performing heat fusion sealing in step (7), such as Figure 9 As shown, the tail of the support tube 302 is open to allow material to be filled into each inner tube 200. In addition, those skilled in the art will understand that the injection / extrusion molding, welding or assembly processes of the outer tube 100, tube head 101, cap 102, extrusion hole 103 and outlet tube 201 can all be achieved using existing mature technologies, which will not be elaborated here.

[0086] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. The structure of a personalized custom-shaped plastic hose, characterized in that, include: The outer tube (100) has a tube head (101) at one end, and a protective cap (102) is provided at the end of the tube head (101). The other end of the outer tube (100) is a sealing end. Multiple inner tubes (200) are used to store different materials; A support and partition assembly is provided inside the outer tube body (100). The support and partition assembly includes an inner connector (301) connected to the inner side of the tube head (101) and a support tube (302) fixedly connected to the inner connector (301). The support tube (302) has a shaped groove (303) opened along the axial direction on the tube wall, so that two rows of support plates (304) are formed on both sides of the shaped groove (303) on the support tube (302). The inner wall of the support tube (302) is provided with a partition block (305) facing the irregular groove (303). The partition block (305) passes through the irregular groove (303) and is fixedly connected to the inner wall of the outer tube body (100). The inner wall of the outer tube (100) is fixedly connected to the outer surface of the support tube (302) and the surface of the partition block (305) to form multiple independent chambers that are airtightly isolated from each other inside the outer tube (100), and an inner tube (200) is provided in each independent chamber. Multiple extrusion holes (103) are provided on the tube head (101) and multiple outlet pipes (201) corresponding to the extrusion holes (103). Each outlet pipe (201) is connected to the corresponding inner tube body (200) to export the material inside the corresponding inner tube body (200). Multiple one-way ventilation components are installed at the pipe head (101) and connected to each independent chamber respectively; The outer tube (100) is provided with multiple pressing areas along the circumference corresponding to each independent chamber. When in use, pressing is applied to a certain pressing area of ​​the outer tube (100) to cause the corresponding support plate (304) to undergo elastic deformation and increase the pressure in the corresponding independent chamber, thereby pressing the inner tube (200) in the independent chamber and causing its material to be squeezed out from the extrusion hole (103) through the corresponding outlet pipe (201). After the pressing is released, the one-way ventilation component allows outside air to enter the corresponding independent chamber to realize chamber reset and support repeated pressing for continuous material discharge.

2. The structure of a personalized custom-shaped plastic hose according to claim 1, characterized in that: The outer surface of the outer tube (100) is provided with pressing marks corresponding to each pressing area; since each independent chamber is airtightly isolated from each other, when one or more pressing areas are squeezed, the pressure in the independent chamber that is not squeezed is less affected by the squeezing action, thereby inhibiting the discharge of material from its inner tube (200).

3. The structure of a personalized custom-made irregular-shaped plastic hose according to claim 1, characterized in that: The surface of the inner tube (200) is bonded and fixed to the non-support piece (304) area of ​​the inner wall of the support tube (302). The connection position between the outlet pipe (201) and the corresponding inner tube (200) is set in the flattened narrow area near the encapsulation end of the outer tube (100). The support piece (304) near the encapsulation end of the outer tube (100) is pressed against the surface of the inner tube (200) by the squeezing force of the flattened narrow area, forming a clamping restriction on the connection position to suppress material backflow after the pressure is released. When the outer tube (100) is pressed to discharge material, the clamping restriction of the flattened narrow area is weakened or released to allow the material in the inner tube (200) to enter the outlet pipe (201) and be extruded through the extrusion hole (103).

4. The structure of a personalized custom-made irregular-shaped plastic hose according to claim 1, characterized in that: The support and separation assembly includes two mirror-symmetrical inner connectors (301) and support tubes (302). Each of the two support tubes (302) is provided with a separation block (305) and is sealed to the inner wall of the outer tube body (100), forming four independent chambers. The outer tube body (100) is provided with four pressing areas in the circumferential direction.

5. The structure of a personalized custom-shaped plastic hose according to claim 1, characterized in that: The partition block (305) is a partition or partition rib that extends gradually along the axial direction. The partition block (305) forms a continuous sealing interface with the inner wall of the outer tube (100), and the non-support plate (304) area of ​​the outer wall of the support tube (302) forms a continuous sealing interface with the inner wall of the outer tube (100) to improve the airtight isolation effect of the independent chamber.

6. The structure of a personalized custom-made irregular-shaped plastic hose according to claim 1, characterized in that: The one-way ventilation assembly includes a connecting pipe (401) fixed on the pipe head (101). The inner end of the connecting pipe (401) facing the independent chamber is provided with a flexible rubber sleeve (402). The flexible rubber sleeve (402) is duckbill-shaped or flat. When pressed, the positive pressure in the chamber causes the flexible rubber sleeve (402) to close to prevent exhaust. When the press is released, the negative pressure in the chamber allows outside air to enter the corresponding independent chamber.

7. The structure of a personalized custom-shaped plastic hose according to claim 6, characterized in that: The outer end of the connecting pipe (401) is provided with an axially movable embedded pipe fitting (403). When the embedded pipe fitting (403) moves inward to be inserted into the flexible rubber sleeve (402), it blocks the flexible rubber sleeve (402) from closing, so that the one-way ventilation component switches from the one-way air supply state to the non-one-way state or the normally open state.

8. The structure of a personalized custom-made irregular-shaped plastic hose according to claim 1, characterized in that: When the one-way ventilation component is in the normally open state, the partition block (305) limits the radial compression of the outer tube (100), so that the outer tube (100) is not completely flattened in the corresponding area; the support plate (304) can extend to both sides of the partition block (305) and press the inner tube (200) within the pressing stroke, so that material extrusion can still be achieved in the normally open state.

9. A method for molding a personalized custom-shaped plastic hose as described in any one of claims 1-8, characterized in that, Includes the following steps: (1) Fabrication of support partition components: Provide a support tube (302) blank, and process a groove along the axial direction on the wall of the support tube (302). The groove is a special-shaped groove (303), so that two rows of support pieces (304) integrally formed from the wall of the support tube (302) are formed on both sides of the groove; install partition blocks (305) on the inner wall of the support tube (302) at the corresponding groove position, so that the partition blocks (305) extend through the groove to the outside of the support tube (302); (2) Fixing and molding of partition block (305): The partition block (305) is fixed to the support tube (302) by means of adhesive bonding, hot melt welding or ultrasonic welding, so that the partition block (305) and the support tube (302) form a stable connection and maintain the assembly state of the partition block (305) through the groove exposed; (3) Assembly of the support partition assembly and the pipe head (101): The inner connector (301) is fixedly connected to the support pipe (302) to form a support partition assembly, and the inner connector (301) is inserted and fixed inside the pipe head (101) so that the inner connector (301) and the inner side of the pipe head (101) are press-fitted or sealed to form a sealed connection. (4) Installation and positioning of inner tube (200) to prevent clumping: Multiple inner tubes (200) are placed into the positions of each chamber defined by the support partition assembly, and the outer surface of the inner tube (200) is fixed to the non-support piece (304) area of ​​the inner wall of the support tube (302) by spot bonding, line bonding or surface bonding, so as to position the inner tube (200) and prevent the inner tube (200) from clumping together in the chamber; (5) Outgoing connection: Connect and fix each inner tube body (200) to the corresponding outgoing pipe (201) at the pipe head (101); (6) Forming independent chambers: An adhesive layer or welding layer is provided on the non-support piece (304) area of ​​the outer wall of the support tube (302) and the outer surface of the partition block (305). The outer tube body (100) is sleeved on the outside of the support partition assembly and fixedly connected to the tube head (101). A continuous sealed connection is formed at the contact interface between the inner wall of the outer tube body (100) and the non-support piece (304) area of ​​the outer wall of the support tube (302), and between the partition block (305) and the inner wall of the outer tube body (100), thereby forming multiple airtight independent chambers inside the outer tube body (100). (7) Integral heat-sealing of filling and packaging: Keep the end of each inner tube (200) open near the packaging end of the outer tube (100), and fill each inner tube (200) with material; after filling, heat-seal the packaging end of the outer tube (100) so that the tail end of the outer tube (100), the opening end of the inner tube (200) and the support tube (302) form an integrated seal at the packaging end.

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