Continuous machining equipment for medical precise three-layer composite tube

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By designing adjustable medical precision three-layer composite tube continuous processing equipment, the problem that existing equipment cannot adapt to different cavity sizes is solved, and higher suitability and discharge quality are achieved.

CN222681852UActive Publication Date: 2025-03-28SHAANXI ZHONGJIAN YIXIN BIOTECHNOLOGY CO LTD

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Patent Information

Application Number: CN202421052864.3
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-05-15
Publication Date: 2025-03-28
Estimated Expiration: 2034-05-15

AI Technical Summary

Technical Problem

The existing medical composite pipe processing equipment cannot adjust and replace mold pipes, resulting in the inability to adapt to three-layer composite pipes of different cavity sizes, resulting in the problem that the cavity size after processing does not match the required size.

Method used

A medical precision three-layer composite tube continuous processing equipment is designed. By setting threaded rods at both ends of the rotating block, mold tubes of different sizes are replaced and disassembled, and the telescopic rods and piston plates are driven by the cylinder to achieve co-extrusion of the inner and middle-layer materials, and spray and dry through the shaping mechanism.

Benefits of technology

The adaptation of three-layer composite pipes with different cavity sizes is achieved, the matching degree between the processing cavity size and the required size is improved, and the uniformity of the discharge and drying effect are improved through coextrusion and shaping.

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Abstract

The utility model discloses medical precise three-layer composite tube continuous processing equipment, which belongs to the technical field of medical auxiliary equipment processing and comprises a first support column, an extrusion die is arranged on the side of the first support column, and a molding material in an inner cavity of the extrusion die is co-extruded and molded through an air cylinder. A shaping mechanism used for spraying and drying an outer layer is arranged on the side portion of the extrusion die, the extrusion die comprises an outer pipe and an inner pipe, one end of the outer pipe and one end of the inner pipe are provided with a pushing assembly fixedly connected with an air cylinder, the other end of the outer pipe and the other end of the inner pipe are jointly and fixedly sleeved with a protective sleeve, and a die pipe used for forming is arranged on the side portion of the protective sleeve. According to the utility model, the threaded rods are arranged at the two ends of the rotating block, and die pipes with different sizes can be replaced and disassembled in a threaded connection manner, so that the use requirements of three-layer composite pipes with different inner cavity sizes can be met; and the adaptation degree of the size of the inner cavity of the processed three-layer composite pipe and the size of the required three-layer composite pipe is improved.

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Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary equipment processing, in particular to a medical precision three-layer composite tube continuous processing device. Background Art

[0002] Medical composite catheter is a material widely used in the medical field. It is composed of a variety of materials. Medical composite tube is a tubular structure composed of a variety of materials and is widely used in the medical field. Medical composite tube has good biocompatibility, corrosion resistance, high temperature resistance, high pressure resistance and other advantages, and can be used to transport blood, drugs, nutrient solution, etc.

[0003] However, when the existing medical composite tube processing equipment processes the three-layer composite tube, the mold tube size is fixed and is set in the inner cavity of the processing equipment, which makes it impossible to adjust and replace it, and cannot adapt to the use requirements of three-layer composite tubes with different inner cavity sizes, resulting in the inner cavity size of the processed three-layer composite tube not matching the required size. Therefore, the utility model provides a medical precision three-layer composite tube continuous processing equipment to solve the above-mentioned problems. Utility Model Content

[0004] The utility model aims to provide a medical precision three-layer composite tube continuous processing equipment to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A medical precision three-layer composite tube continuous processing equipment, comprising a first support column, a side of the first support column is provided with an extrusion die, the inner cavity molding material of the extrusion die is co-extruded by a cylinder, and the side of the extrusion die is provided with a shaping mechanism for spraying and drying the outer layer;

[0007] The extrusion die comprises an outer tube, the inner cavity of the outer tube is sleeved with an inner tube, one end of the outer tube and the inner tube is provided with a pushing assembly fixedly connected to a cylinder, the other end of the outer tube and the inner tube is jointly fixedly sleeved with a protective sleeve, and the side of the protective sleeve is provided with a die tube for molding.

[0008] As a further solution of the utility model, the pushing assembly includes a telescopic rod fixedly connected to the output end of the cylinder, the side of the telescopic rod is fixedly connected to a connecting plate, the side of the connecting plate is provided with a first piston plate and a second piston plate, the second piston plate is arranged in the gap between the outer tube and the inner tube, and the side of the first piston plate is fixedly connected to the connecting plate through the connecting rod, the first piston plate is arranged in the inner cavity of the inner tube, and the second piston plate is fixedly connected to the connecting plate through the pushing rod.

[0009] As a further solution of the utility model, a rotating block is provided on the side of the mold tube, and threaded rods are fixedly connected to both ends of the rotating block. The two threaded rods are respectively threadedly rotatably sleeved with the protective sleeve and the side of the mold tube.

[0010] As a further solution of the utility model, the side parts of the outer tube and the inner tube are respectively fixedly sleeved with a first feeding pipe and a second feeding pipe.

[0011] As a further solution of the utility model, the shaping mechanism includes a first limiting tube which is sleeved on the periphery of the mold tube, and both ends of the first limiting tube are fixedly connected to second limiting tubes, one side of the second limiting tube is in contact with the side of the protective sleeve, and the other side of the second limiting tube is fixedly sleeved with a second support column.

[0012] As a further solution of the utility model, a paint box is fixedly installed on the top of the second support column, and the paint box is fixedly connected to the outer wall of the first limiting tube through a spray pipe. A drying device is fixedly installed on the side of the second support column, and the drying device is fixedly connected to the outer walls of the two second limiting tubes through an air outlet pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. When the utility model is used, threaded rods are arranged at both ends of the rotating block, and mold tubes of different sizes can be replaced by threaded connection, and disassembly is convenient, so as to adapt to the use requirements of three-layer composite tubes with different inner cavity sizes, and improve the adaptability of the inner cavity size of the processed three-layer composite tube to the required size of the three-layer composite tube.

[0015] 2. When the utility model is used, the telescopic rod and the connecting plate can be telescopically moved under the action of the cylinder, and the second piston plate and the first piston plate can be driven to move. Since the peripheries of the first piston plate and the second piston plate are in contact with the outer wall or the inner wall of the outer tube and the inner tube, the first piston plate and the second piston plate can squeeze the gas in the inner cavity of the outer tube and the inner tube during the movement, so that the inner layer plastic material and the middle layer plastic material can be co-extruded, thereby improving the uniformity of the discharge, and the setting mechanism can be used to dry the co-extruded material and the composite tube after spraying, thereby improving the continuous line of the composite tube discharge effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the main view of the overall structure of a medical precision three-layer composite tube continuous processing equipment.

[0017] Figure 2 The figure is a side view of the overall structure of a medical precision three-layer composite tube continuous processing equipment.

[0018] Figure 3 This is a diagram of the internal structure of the co-extrusion part of a medical precision three-layer composite tube continuous processing equipment.

[0019] Figure 4 This is a connection diagram of the mold tube in a medical precision three-layer composite tube continuous processing equipment.

[0020] Figure 5 This is a structural diagram of parts after extrusion in a medical precision three-layer composite tube continuous processing equipment.

[0021] In the figure: 1. first support column; 2. cylinder; 3. outer tube; 4. protective cover; 5. paint box; 6. spray tube; 7. second support column; 8. drying equipment; 9. second feed tube; 10. first feed tube; 11. air outlet tube; 12. telescopic rod; 13. connecting plate; 14. connecting rod; 15. push rod; 16. first piston plate; 17. second piston plate; 18. inner tube; 19. mold tube; 20. rotating block; 21. threaded rod; 22. first limit tube; 23. second limit tube. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1: Please refer to Figure 1-5 In an embodiment of the utility model, a medical precision three-layer composite tube continuous processing equipment comprises a first support column 1, an extrusion die is arranged on the side of the first support column 1, and the plastic material in the inner cavity of the extrusion die is co-extruded through a cylinder 2, and the cylinder 2 can provide power for the discharge of the plastic material in the inner cavity of the extrusion die, so that the inner layer and the middle layer of the three-layer composite tube can be co-extruded, and a shaping mechanism for spraying and drying the outer layer is arranged on the side of the extrusion die, and the shaping mechanism can accelerate the drying effect of the three-layer composite tube after co-extrusion and spraying;

[0024] The extrusion die includes an outer tube 3, the inner cavity of the outer tube 3 is sleeved with an inner tube 18, the space in the inner cavity of the inner tube 18 is a placement space for the inner layer plastic material, the gap between the outer tube 3 and the inner tube 18 is a placement space for the middle layer plastic material, one end of the outer tube 3 and the inner tube 18 is provided with a pushing assembly fixedly connected to the cylinder 2, the other end of the outer tube 3 and the inner tube 18 is jointly fixedly sleeved with a protective sleeve 4, the protective sleeve 4 plays a protective role, and can also connect the inner tube 3 and the outer tube 18, and the side of the protective sleeve 4 is provided with a mold tube 19 for molding;

[0025] See also Figure 3 The pushing component includes a telescopic rod 12 fixedly connected to the output end of the cylinder 2, a connecting plate 13 fixedly connected to the side of the telescopic rod 12, a first piston plate 16 and a second piston plate 17 are arranged on the side of the connecting plate 13, the second piston plate 17 is arranged in the gap between the outer tube 3 and the inner tube 18, the size of the second piston plate 17 is larger than the outer size of the inner tube 18, and smaller than the inner cavity size of the outer tube 3, and the side of the first piston plate 16 is fixedly connected to the connecting plate 13 through a connecting rod 14, the first piston plate 16 is arranged in the inner cavity of the inner tube 18, and the second piston plate 17 is fixedly connected to the connecting plate 13 through a pushing rod 15. Specifically, the first piston plate 16 and the second piston plate 17 are both made of rubber material, which can fully fit with the inner wall of the outer tube 3, the inner wall and the outer wall of the inner tube 18, and the uniformity of extrusion can be ensured by reducing the gap.

[0026] Example 2: Please refer to Figure 1 - Figure 5 Based on Example 1, a rotating block 20 is provided on the side of the mold tube 19, and threaded rods 21 are fixedly connected at both ends of the rotating block 20. The two threaded rods 21 are respectively threadedly rotatably sleeved with the protective sleeve 4 and the side of the mold tube 19. Specifically, by providing threaded rods 21 at both ends of the rotating block 20, mold tubes 19 of different sizes can be replaced by threaded connection, and disassembly is convenient;

[0027] See also Figure 2 and Figure 3 The sides of the outer tube 3 and the inner tube 18 are respectively fixedly sleeved with a first feed pipe 10 and a second feed pipe 9, and the first feed pipe 10 and the second feed pipe 9 can realize the conveying of the plastic materials of the inner layer and the middle layer;

[0028] See also Figure 4 and Figure 5The shaping mechanism includes a first limiting tube 22 sleeved on the periphery of the mold tube 19, and both ends of the first limiting tube 22 are fixedly connected with second limiting tubes 23, and the side of one of the second limiting tubes 23 is in contact with the side of the protective sleeve 4. The first limiting tube 22 and the two second limiting tubes 23 are connected together to protect the mold tube 19 and prevent the dust generated during the co-extrusion. The periphery of the other second limiting tube 23 is fixedly sleeved with a second support column 7, and a discharge port that is mutually connected with the first limiting tube 22 and the second limiting tube 23 is opened on the side of the second support column 7. A cutting structure can be set at the position of the discharge port to achieve cutting of the three-layer composite tube, thereby improving the continuous discharge effect of the device;

[0029] See also Figure 1 and Figure 2 A paint box 5 is fixedly installed on the top of the second support column 7, and a liquid pump for extracting paint is installed in the inner cavity of the paint box 5. The outer layer of paint can be extracted through the liquid pump. The paint box 5 is fixedly connected with the outer wall of the first limiting tube 22 through the spraying pipe 6. A drying device 8 is fixedly installed on the side of the second support column 7. The drying device 8 is specifically a drying machine, which can realize the drying of the three-layer composite tube after co-extrusion and spraying, and accelerate the drying effect. The drying device 8 is fixedly connected with the outer walls of the two second limiting tubes 23 through the air outlet pipe 11.

[0030] The working principle of the utility model is as follows: when the device is needed, firstly, a suitable mold tube 19 is selected according to the use thickness of the three-layer composite tube to be processed, and then one end of the mold tube 19 is threadedly rotated and sleeved with the threaded rod 21 on one side of the rotating block 20, and the threaded rod 21 is threadedly rotated and sleeved with the side of the protective sleeve 4, so that the mold tube 19 can be kept on the same vertical line with the side wall of the protective sleeve 4, and then the first limiting tube 22 and the second limiting tube 23 can be moved to the periphery of the mold tube 19 by moving the second support column 7, so as to realize The outer package of the mold tube 19 is limited, and then the first feed tube 10 and the second feed tube 9 are connected respectively through the external connecting tube, the heated and melted inner plastic material is transported to the inner cavity of the inner tube 18, and the heated and melted middle layer plastic material is transported to the gap between the outer tube 3 and the inner tube 18, and then the cylinder 2 is driven to make the telescopic rod 12 telescopic movement, and drive the connecting plate 13 to telescopic movement. During the movement of the connecting plate 13, the second piston plate 17 can be pushed by the connecting rod 14, and the first piston plate 17 can be pushed by the push rod 15. A piston plate 16 is used to push, and the peripheries of the first piston plate 16 and the second piston plate 17 are fitted with the outer wall or inner wall of the outer tube 3 and the inner tube 18, and then when the first piston plate 16 and the second piston plate 17 are moving, the gas in the inner cavity of the outer tube 3 and the inner tube 18 can be squeezed, so that the inner layer plastic material and the middle layer plastic material can be extruded through the discharge hole opened on the side of the protective sleeve 4, so that the inner layer and the middle layer plastic material after extrusion will be wrapped on the outer wall of the mold tube 19, and then the paint in the inner cavity of the paint box 5 can be transported to the first limit tube through the spray pipe 6 The inner cavity of 22 is used to spray the outer wall of the co-extruded composite tube of the inner layer and the middle layer, and the outer layer is a degradable polymer material layer of the sprayed active drug. At the same time, the driving drying equipment 8 can be transported to the inner cavity of the two second limiting tubes 23 through the air outlet pipe 11, so as to achieve the effect of drying the outer wall of the co-extruded composite tube of the inner layer and the middle layer. Since one of the second limiting tubes 23 is arranged at the rear end of the first limiting tube 22, the outer wall of the three-layer composite tube after spraying the active drug can be dried again, thereby accelerating the drying effect of the composite tube and improving the discharge and forming speed of the three-layer composite tube.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A medical precision three-layer composite tube continuous processing equipment, comprising a first support column (1), characterized in that: An extrusion die is arranged on the side of the first support column (1), and the molding material in the inner cavity of the extrusion die is co-extruded through a cylinder (2), and a shaping mechanism for spraying and drying the outer layer is arranged on the side of the extrusion die; The extrusion die comprises an outer tube (3), the inner cavity of the outer tube (3) is sleeved with an inner tube (18), one end of the outer tube (3) and the inner tube (18) is provided with a pushing assembly fixedly connected to the cylinder (2), the other end of the outer tube (3) and the inner tube (18) are jointly fixedly sleeved with a protective sleeve (4), and the side of the protective sleeve (4) is provided with a mold tube (19) for molding.

2. The medical precision three-layer composite tube continuous processing equipment according to claim 1 is characterized in that: The pushing assembly comprises a telescopic rod (12) fixedly connected to the output end of the cylinder (2); a connecting plate (13) is fixedly connected to the side of the telescopic rod (12); a first piston plate (16) and a second piston plate (17) are arranged on the side of the connecting plate (13); the second piston plate (17) is arranged in the gap between the outer tube (3) and the inner tube (18); and the side of the first piston plate (16) is fixedly connected to the connecting plate (13) via a connecting rod (14); the first piston plate (16) is arranged in the inner cavity of the inner tube (18); and the second piston plate (17) is fixedly connected to the connecting plate (13) via a pushing rod (15).

3. The medical precision three-layer composite tube continuous processing equipment according to claim 1 is characterized in that: A rotating block (20) is provided on the side of the mold tube (19), and threaded rods (21) are fixedly connected to both ends of the rotating block (20). The two threaded rods (21) are respectively threadedly rotatably sleeved with the protective sleeve (4) and the side of the mold tube (19).

4. The medical precision three-layer composite tube continuous processing equipment according to claim 1 is characterized in that: The side parts of the outer tube (3) and the inner tube (18) are respectively fixedly sleeved with a first feed pipe (10) and a second feed pipe (9).

5. The medical precision three-layer composite tube continuous processing equipment according to claim 1 is characterized in that: The shaping mechanism comprises a first limiting tube (22) sleeved on the periphery of the mold tube (19), both ends of the first limiting tube (22) being fixedly connected to second limiting tubes (23), a side portion of one of the second limiting tubes (23) being in contact with a side portion of the protective sleeve (4), and a second supporting column (7) being fixedly sleeved on the periphery of another second limiting tube (23).

6. The medical precision three-layer composite tube continuous processing equipment according to claim 5, characterized in that: A paint box (5) is fixedly mounted on the top of the second support column (7), and the paint box (5) is fixedly sleeved with the outer wall of the first limiting tube (22) via a spraying tube (6). A drying device (8) is fixedly mounted on the side of the second support column (7), and the drying device (8) is fixedly sleeved with the outer walls of the two second limiting tubes (23) via an air outlet pipe (11).