Thick-wall thermoplastic hose extrusion on-line sealing device

Abstract

The embodiment of the utility model provides a thick-wall thermoplastic hose extrusion online sealing device. The thick-wall thermoplastic hose extrusion online sealing device comprises a circulating chain, a sealing chuck and a control system. Wherein the number of the sealing chucks is at least two; the control system is electrically connected with the sealing chuck and the circulating chain, and the sealing chuck is arranged on the circulating chain; one side of the circulating chain and the water tank cooling section of the hose extrusion production line are arranged side by side in the same direction; and the distance between the sealing chucks is equal to the length of the hose sections sealed at the two ends. The problem that the existing hose hot melting tail sealing efficiency is low is solved, the efficiency can be effectively improved, sealing is carried out on the cooling section of hose melt extrusion, the sealing chuck is loosened after shaping, and cooling and sealing are carried out at the same time. The device has the advantages that the production efficiency is improved, the length of hose sections sealed at the two ends is accurately controlled, material waste is reduced, maintenance and operation are easy, and the sealing quality is improved.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to an on-line extrusion sealing device for thick-walled thermoplastic hoses. Background Art

[0002] Many aseptic packaging applications for liquid medical supplies and liquid foods require the outlet of the hose to be sealed to prevent microorganisms from entering and contaminating the contents before use. The sealed end is then cut off to create a liquid outlet. Compared to using additional components to seal the hose outlet, fusion sealing offers the lowest cost and highest safety.

[0003] The current hot melt sealing method is to melt the inner wall of the hose and then seal it, usually by heating from the inside or from the outside.

[0004] However, heating from the outside results in very low heat transfer efficiency, and the entire hose hot-melt area has very low compressive strength, making it difficult to apply pressure to ensure a tight fusion everywhere, and cooling after fusion is also very slow. Heating from the inside easily causes contamination from foreign matter such as slag and burnt spots, affecting the cleanliness of the hose, and cooling after fusion is also relatively slow. In summary, the current efficiency of hot-melt sealing of hoses is low. Utility Model Content

[0005] In view of the above problems, the embodiments of the present invention are proposed to provide a thick-walled thermoplastic hose extrusion online sealing device that overcomes the above problems or at least partially solves the above problems:

[0006] Preferably, it comprises a circulating chain, a sealing chuck and a control system; wherein, at least two sealing chucks are provided;

[0007] The control system is electrically connected to the sealing clamp and the circulating chain respectively, and the sealing clamp is provided on the circulating chain;

[0008] One side of the circulating chain is arranged side by side and in the same direction as the water tank cooling section of the hose extrusion production line; the spacing between the sealing clamps is the length of the sealed hose sections at both ends.

[0009] Preferably, the length of the circulating chain is an integral multiple of the length of the hose section with both ends sealed.

[0010] Preferably, the sealing clamp includes a limit assembly, a left clamp arm assembly and a right clamp arm assembly;

[0011] The left clamp arm assembly and the right clamp arm assembly are symmetrically arranged, and a space for clamping the hose is formed between the left clamp arm assembly and the right clamp arm assembly;

[0012] The limiting assembly is arranged on both sides of the left clamping arm assembly and the right clamping arm assembly.

[0013] Preferably, the limiting assembly includes a left limiting guide rail and a right limiting guide rail;

[0014] The left limiting guide rail is arranged on the outside of the left clamping arm assembly, and the right limiting guide rail is arranged on the outside of the right clamping arm assembly.

[0015] Preferably, the sealing jaws include an opening spring;

[0016] The top of the left clamp arm assembly and the top of the right clamp arm assembly are fixed by an endless chain, and the opening spring is arranged in the middle of the left clamp arm assembly and the right clamp arm assembly.

[0017] Preferably, the left clamp arm assembly includes a left clamp opening and closing shaft, a left clamp and a left roller;

[0018] The left clamp is connected to the circulating chain through the left clamp opening and closing shaft; the left clamp is connected to the left limiting guide rail through the left roller.

[0019] Preferably, the right clamp arm assembly includes a right clamp opening and closing shaft, a right clamp and a right roller;

[0020] The right chuck is connected to the circulating chain through the right chuck opening and closing shaft; the right chuck is connected to the right limiting guide rail through the right roller.

[0021] Preferably, grooves for accommodating the flattened volume of the hose are provided at opposite positions on the tops of the left clamp and the right clamp.

[0022] Preferably, the circulating chain is a conveyor belt.

[0023] This application specifically includes the following advantages:

[0024] In the embodiments of the present application, relative to the problem of "low efficiency of hot-melt sealing of hoses" in the prior art, the present application provides a solution of "circulating chain, sealing chuck and control system", specifically: comprising a circulating chain, a sealing chuck and a control system; wherein, at least two sealing chucks are provided; the control system is electrically connected to the sealing chuck and the circulating chain respectively, and the sealing chuck is provided on the circulating chain; one side of the circulating chain is arranged side by side and in the same direction as the water tank cooling section of the hose extrusion production line; the spacing between the sealing chucks is the length of the hose sections sealed at both ends. The present application solves the problem of "low efficiency of hot-melt sealing of hoses" and can effectively improve efficiency. Sealing is performed in the cooling section of the hose melt extrusion, and the sealing chuck is released after shaping, and cooling and sealing are performed simultaneously. The sealing chucks of the present application are arranged and installed on the circulating chain according to the length of the hose sections sealed at both ends required by the hose. The total length of the circulating chain is an integer multiple of the length of the hose sections sealed at both ends, and the control system can adjust the running speed of the circulating chain. While the original hose extrusion production line is extruding the hose, the hose extrusion online sealing device is installed in the water tank cooling section of the hose extrusion production line. The control system controls the circulating chain to run in the same direction as the extruded hose near the side of the extruded hose. When the outer wall of the hose has cooled and shaped but the inner wall is still in a molten state in the cooling water tank, the sealing clamp is controlled to clamp a section of the hose. Multiple sealing clamps clamp the hose in sequence according to the required length of the hose section at both ends, run synchronously and cool, and run in the cooling water tank until the inner wall of the hose is also cooled and shaped. The sealing clamp releases the hose, and the released sealing clamp circulates in the reverse direction from the side away from the hose with the circulating chain and then re-enters the sealing side, thereby effectively circulating and sealing, thereby improving efficiency. The present application has the advantages of improving production efficiency, accurately controlling the length of the hose section at both ends, reducing material waste, facilitating maintenance and operation, and improving sealing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for the description of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 This is a schematic structural diagram of a thick-walled thermoplastic hose extrusion and online sealing device of the present invention;

[0027] Figure 2 This is a schematic diagram of the sealing chuck structure of a thick-walled thermoplastic hose extrusion online sealing device of the utility model;

[0028] Figure 3 This is a design drawing of a thick-walled thermoplastic hose extrusion and online sealing device of the utility model;

[0029] 1. Circular chain; 11. Chain link; 2. Sealing chuck; 21. Limit assembly; 211. Left limit guide rail; 212. Right limit guide rail; 22. Left clamping arm assembly; 221. Left chuck opening and closing axis; 222. Left chuck; 223. Left roller; 23. Right clamping arm assembly; 231. Right chuck opening and closing axis; 232. Right chuck; 233. Right roller; 24. Opening spring; 3. Water tank cooling section of hose extrusion production line. DETAILED DESCRIPTION

[0030] To make the objectives, features, and advantages of this application more readily apparent, the present application is further described below in conjunction with the accompanying drawings and specific embodiments. It is apparent that the embodiments described are only a portion of the embodiments of this application, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments in this application without inventive effort are also within the scope of protection of this application.

[0031] The inventors of the utility model discovered through analysis of existing technologies that many sterile packaging for liquid medical supplies and liquid foods require the outlet end of the output hose to be sealed to prevent microorganisms from entering the hose and contaminating the contents before use. The sealed end is then cut off during use to form a liquid outlet. Compared to using additional parts to seal the hose outlet, hose fusion sealing offers the lowest cost and highest safety. However, due to the thick hose wall, the currently used hot-melt sealing method requires melting the inner wall of the hose before sealing. If heated from the outside, the entire wall must be heated to a viscous flow state, resulting in not only low heat transfer efficiency but also very low compressive strength at the hot-melt portion of the hose, making it difficult to apply pressure to ensure a tight fusion at all locations. Cooling after fusion is also very slow. If heated from the inner wall, while heat transfer efficiency is high, it is prone to contamination by foreign matter such as slag and burnt spots, affecting the cleanliness of the hose. Cooling after fusion is also relatively slow.

[0032] Therefore, in order to improve the current problem of low efficiency of hot-melt sealing of hoses, the present invention proposes a hose extrusion online sealing device, comprising a circulating chain, a plurality of sealing chucks, and a control system. The sealing chucks are arranged and installed on the circulating chain according to the length of the hose segments to be sealed at both ends of the hose, and the total length of the circulating chain is an integer multiple of the length of the hose segments to be sealed at both ends. The control system can adjust the running speed of the circulating chain. While the original hose extrusion production line is extruding the hose, the hose extrusion online sealing device is installed in the water tank cooling section of the hose extrusion production line. The control system controls the circulating chain to run in the same direction as the extruded hose near the extruded hose side. When the outer wall of the hose has cooled and shaped in the cooling water tank but the inner wall is still in a molten state, the sealing chucks are controlled to clamp a section of the hose. The plurality of sealing chucks sequentially clamp the hose according to the length of the hose segments to be sealed at both ends of the hose, and run and cool synchronously. After running in the cooling water tank until the inner wall of the hose has also cooled and shaped, the sealing chucks release the hose. The released sealing chucks circulate in reverse from the side away from the hose with the circulating chain and then re-enter the sealing side.

[0033] The features of the thick-walled thermoplastic hose extrusion online sealing device of the present application include: Improved production efficiency: The design of the circulating chain and multiple sealing clamps allows the hose sealing process to be carried out continuously, reducing manual intervention and waiting time, and improving production efficiency. Precise control of the length of the hose segments sealed at both ends: The sealing clamps are arranged and installed on the circulating chain according to the required length of the hose segments sealed at both ends, which can accurately control the sealing length of each hose and ensure consistent sealing quality. Reduced material waste: Because the total length of the circulating chain is an integer multiple of the length of the hose segments sealed at both ends, material utilization can be maximized, waste can be reduced, and production costs can be lowered. Easy maintenance and operation: Multiple sealing clamps are installed on the circulating chain for easy maintenance and operation, reducing the complexity and difficulty of manual operation. Improved sealing quality: By precisely controlling the length of the hose segments sealed at both ends and using multiple sealing clamps, the sealing quality of the hose can be improved, ensuring a firm and uniform seal. Strong adaptability: This design can adapt to the sealing requirements of hoses of different lengths, is highly flexible, and is suitable for large-scale production. Space-saving: The loop chain and sealing chuck are compact and take up little space, making them suitable for use in production environments with limited space. Easy to automate: This design is easy to integrate with automated equipment, enabling fully automated hose sealing production, further improving production efficiency and reducing labor costs.

[0034] In the embodiments of the present application, relative to the "current low efficiency of hot-melt sealing of hoses" in the prior art, the present application provides a solution of "a circulating chain 1, a sealing chuck 2 and a control system", specifically: comprising a circulating chain 1, a sealing chuck 2 and a control system; wherein, at least two sealing chucks 2 are provided; the control system is electrically connected to the sealing chuck 2 and the circulating chain 1, respectively, and the circulating chain 1 is provided with the sealing chuck 2; one side of the circulating chain 1 is arranged side by side and in the same direction as the water trough cooling section 3 of the hose extrusion production line; the spacing between the sealing chucks 2 is the length of the hose sections sealed at both ends. The present application solves the problem of "current low efficiency of hot-melt sealing of hoses", can effectively improve efficiency, seals in the cooling section of the hose melt extrusion, releases the sealing chuck 2 after shaping, and performs cooling and sealing simultaneously. The present application has the advantages of improving production efficiency, accurately controlling the length of the hose sections sealed at both ends, reducing material waste, easy maintenance and operation, and improving sealing quality.

[0035] Reference Figure 1-3 , shows a structural schematic diagram of the thick-walled thermoplastic hose extrusion online sealing device of the present invention, which may specifically include the following structure: a circulating chain 1, a sealing clamp 2 and a control system; wherein, at least two sealing clamps 2 are provided; the control system is electrically connected to the sealing clamp 2 and the circulating chain 1 respectively, and the sealing clamp 2 is provided on the circulating chain 1; one side of the circulating chain 1 is arranged side by side and in the same direction as the water trough cooling section 3 of the hose extrusion production line; the spacing between the sealing clamps 2 is the length of the sealed hose sections at both ends.

[0036] Next, a thick-walled thermoplastic hose extrusion online sealing device in this exemplary embodiment will be further described.

[0037] In one embodiment of the present application, the control system is electrically connected to the sealing chuck 2 and the endless chain 1, respectively. The control system can adjust the operating speed of the endless chain 1 and control the endless chain 1 to run in the same direction as the extruded hose near the extruded hose. The water tank cooling section 3 of the hose extrusion line is a section that controls the sealing chuck 2 to clamp the hose in the cooling water tank, where the outer wall of the hose has cooled and set, but the inner wall is still molten.

[0038] In a specific embodiment, the control system can be configured to adjust the running speed of the circulating chain 1 through electrical connection, and can ensure that the circulating chain 1 runs synchronously with the extruded hose, which is very important for controlling the sealing process and ensuring product quality.

[0039] It should be noted that a control system is a type of software used to manage and regulate various mechanical devices. It controls the controlled object by receiving input signals, processing them, and generating output signals based on predetermined algorithms and rules. A control system often includes a computer or microprocessor that can perform a variety of computational tasks, including speed control, direction control, and the opening and closing of the sealing chuck 2.

[0040] As an example, the control system is linked to the hose extruder, and the hose melt extrusion online sealing device also serves as a hose extrusion traction system, and the diameter and wall thickness of the extruded hose can be controlled by adjusting the running speed of the circulating chain 1.

[0041] As an example, after the extruded hose is cooled, the control system controls the cutter of the original hose extrusion system at the rear end to cut the hose in the middle of each seal and in the middle of two seals, respectively, to obtain sections of hose with one end sealed and the other end open, without waste, achieving a high utilization effect.

[0042] In a specific embodiment, the control system controls the sealing clamp 2 to clamp a section of the hose at a position where the outer wall of the hose has been cooled and shaped but the inner wall is still in a molten state in the cooling water tank, and the sealing clamp 2 releases the hose after running in the cooling water tank until the inner wall of the hose is also cooled and shaped.

[0043] In one embodiment of the present application, the circulating chain 1 is a conveyor belt, one side of the circulating chain 1 is arranged side by side and in the same direction as the water trough cooling section 3 of the hose extrusion production line, and the other side of the circulating chain 1 is arranged side by side and in the opposite direction to the water trough cooling section 3 of the hose extrusion production line.

[0044] As an example, the circulating chain 1 is a closed ring chain, and each link 11 is connected to form a closed ring chain, with semicircular ends and a rectangular elliptical middle. The two sides of the circulating chain 1 are arranged side by side. The structure of the circulating chain 1 is a closed structure composed of multiple links 11 connected in sequence through connectors such as pins, bolts, etc. The advantages of the circulating chain 1 include: Transmission of torque and motion: The chain structure can effectively transmit torque and motion and is suitable for various mechanical transmission systems. Simple structure: The chain structure consists of simple rings and connectors, which is easy to manufacture and maintain.

[0045] The endless chain 1 of the present application is easy to adjust, and the length of the endless chain 1 can be adjusted by adding or reducing chain links 11 to meet different sealing hose segment length requirements.

[0046] In one embodiment of the present application, the sealing clamps 2 are provided on the circulating chain 1 , and the spacing between the sealing clamps 2 is the length of the sealed hose sections at both ends.

[0047] As an example, the circulating chain 1 is placed above an extruded hose, with the sealing chucks 2 clamping the hose on both sides. After the sealing chucks 2 reach their set position, they are compressed by the left and right limit rails 212 to clamp the hose. After cooling, the left and right limit rails 212 release the sealing chucks 2, releasing the hose. Specifically, two synchronously running circulating conveyor belts are equipped with multiple aligned sealing chucks 2, each sized to meet the required hose segment lengths at both ends. After reaching their set position, the sealing chucks 2 clamp the hose. After cooling, the protrusions separate from the circulating conveyor belts, releasing the hose.

[0048] In one embodiment of the present application, the sealing clamp 2 includes a limit assembly 21, a left clamp arm assembly 22 and a right clamp arm assembly 23; the left clamp arm assembly 22 and the right clamp arm assembly 23 are symmetrically arranged, and a space for clamping the hose is formed between the left clamp arm assembly 22 and the right clamp arm assembly 23; the limit assembly 21 is arranged on both sides of the left clamp arm assembly 22 and the right clamp arm assembly 23.

[0049] In one embodiment of the present application, the limiting assembly 21 includes a left limiting guide rail 211 and a right limiting guide rail 212 ; the left limiting guide rail 211 is arranged on the outside of the left clamping arm assembly 22 , and the right limiting guide rail 212 is arranged on the outside of the right clamping arm assembly 23 .

[0050] As an example, the control system controls the limiting assembly 21 to tighten and loosen the sealing chuck 2. The left limiting guide rail 211 and the right limiting guide rail 211 are symmetrically arranged, and the guide rails are configured to compress the sealing chuck 2 only during the sealing section. The left limiting guide rail 211 swings around the left roller 223 as a fulcrum, thereby compressing the left chuck 222 at the front. The right limiting guide rail 212 swings around the right roller 233 as a fulcrum, thereby compressing the right chuck 232 at the front.

[0051] In one embodiment of the present application, the sealing clamp 2 includes an opening spring 24; the top of the left clamp arm assembly 22 and the top of the right clamp arm assembly 23 are fixed by a circular chain 1, and the opening spring 24 is arranged in the middle of the left clamp arm assembly 22 and the right clamp arm assembly 23.

[0052] In one embodiment of the present application, the left clamp arm assembly 22 includes a left clamp 222 opening and closing axis 221, a left clamp 222 and a left roller 223; the left clamp 222 is connected to the circulating chain 1 through the left clamp 222 opening and closing axis 221; the left clamp 222 is connected to the left limit guide rail 211 through the left roller 223.

[0053] In one embodiment of the present application, the right clamp arm assembly 23 includes a right clamp head 232 opening and closing shaft 231, a right clamp head 232, and a right roller 233. The right clamp head 232 is connected to the endless chain 1 via the right clamp head 232 opening and closing shaft 231. The right clamp head 232 is connected to the right limiting guide rail 212 via the right roller 233. The right clamp head 232 is connected to the link 11 of the endless chain 1 via the right clamp head 232 opening and closing shaft 231.

[0054] In one embodiment of the present application, grooves for accommodating the flattened volume of the hose are provided at opposite positions on the top of the left clamp 222 and the right clamp 232; specifically, grooves for accommodating the flattened volume of the hose are provided at opposite positions on the hose clamping parts of the left clamp 222 and the right clamp 232, so as to prevent the sealing clamps from compressing the uncooled hose to cause excessive deformation or even fracture.

[0055] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0056] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0057] The above is a detailed introduction to the thick-walled thermoplastic hose extrusion online sealing device provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A thick-walled thermoplastic hose extrusion online sealing device, characterized in that: It includes a circulating chain, a sealing chuck and a control system; wherein, at least two sealing chucks are provided; The control system is electrically connected to the sealing clamp and the circulating chain respectively, and the sealing clamp is provided on the circulating chain; One side of the circulating chain is arranged side by side and in the same direction as the water tank cooling section of the hose extrusion production line; the spacing between the sealing clamps is the length of the sealed hose sections at both ends.

2. The thick-walled thermoplastic hose extrusion online sealing device according to claim 1, characterized in that: The length of the circulating chain is an integral multiple of the length of the hose section with both ends sealed.

3. The thick-walled thermoplastic hose extrusion online sealing device according to claim 1, characterized in that: The sealing clamp includes a limit assembly, a left clamp arm assembly and a right clamp arm assembly; The left clamp arm assembly and the right clamp arm assembly are symmetrically arranged, and a space for clamping the hose is formed between the left clamp arm assembly and the right clamp arm assembly; The limiting assembly is arranged on both sides of the left clamping arm assembly and the right clamping arm assembly.

4. The thick-walled thermoplastic hose extrusion online sealing device according to claim 3, characterized in that: The limiting assembly includes a left limiting guide rail and a right limiting guide rail; The left limiting guide rail is arranged on the outside of the left clamping arm assembly, and the right limiting guide rail is arranged on the outside of the right clamping arm assembly.

5. The thick-walled thermoplastic hose extrusion online sealing device according to claim 4, characterized in that: The sealing clamp includes an opening spring; The top of the left clamp arm assembly and the top of the right clamp arm assembly are fixed by an endless chain, and the opening spring is arranged in the middle of the left clamp arm assembly and the right clamp arm assembly.

6. The thick-walled thermoplastic hose extrusion online sealing device according to claim 5, characterized in that: The left clamp arm assembly includes a left clamp opening and closing shaft, a left clamp and a left roller; The left clamp is connected to the circulating chain through the left clamp opening and closing shaft; the left clamp is connected to the left limiting guide rail through the left roller.

7. The thick-walled thermoplastic hose extrusion online sealing device according to claim 6, characterized in that: The right clamp arm assembly includes a right clamp opening and closing shaft, a right clamp and a right roller; The right chuck is connected to the circulating chain through the right chuck opening and closing shaft; the right chuck is connected to the right limiting guide rail through the right roller.

8. The thick-walled thermoplastic hose extrusion online sealing device according to claim 7, characterized in that: The tops of the left clamp and the right clamp are opposite to each other and are both provided with grooves for accommodating the flattened volume of the hose.

9. The thick-walled thermoplastic hose extrusion online sealing device according to claim 1, characterized in that: The circulating chain is a conveyor belt.

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