A plastic catheter extrusion nozzle for medical device manufacturing

Abstract

The application provides a plastic conduit extrusion nozzle for medical instrument processing, and relates to the technical field of nozzles, which comprises a moving head, the outer side of the top end of the moving head is sleeved with a spring, the bottom outer side of the moving head is in an inclined structure, the top end of the moving head is provided with a top groove, the two sides of the top groove are respectively provided with a rectangular groove, a force receiving plate is embedded in the inside of the top groove, and a pull rod is embedded in the inside of the rectangular groove. When the moving head moves downward, the material is preliminarily extruded downward, the moving head continues to move downward, the moving plate is driven to move together, the force receiving head can move in the inside of the guide groove, the force receiving head and the guide plate drive the moving plate to move to the side, the scraping groove can be in contact with the preliminarily discharged material, and then the material is scraped and removed, the problem that the conduit is prone to deformation when the extrusion nozzle preliminarily extrudes the material, manual scraping is needed, the operation is relatively inconvenient, and automatic scraping cannot be achieved by means of the power of the telescopic structure is solved.

Description

Technical Field

[0001] This invention relates to the field of nozzle technology, and in particular to a plastic catheter extrusion nozzle for medical device processing. Background Technology

[0002] When processing medical devices such as plastic catheters, blow molding machines and extrusion nozzles are usually required to extrude the plastic catheters into shapes.

[0003] However, with the current traditional extrusion nozzles, after use, residual material is easily left inside. It is impossible to use the automatic telescopic structure inside the nozzle to push away the residual material. The nozzle has poor heat preservation effect during use, and solidification is likely to occur when the extrusion tube is temporarily stopped. It cannot be kept warm in all directions after telescopic movement. When the tube is initially extruded, the tube is prone to deformation, which requires manual scraping. This is inconvenient to operate and cannot be automatically scraped by the telescopic structure. Summary of the Invention

[0004] In view of this, the present invention provides a plastic catheter extrusion nozzle for medical device processing, which has a top groove. When the device stops extruding the catheter, a spring can push the moving head to reset, so that the top groove can fit and seal with the force plate, thereby pushing the residual material inside the main body upward, reducing the residual material and reducing the probability of blockage.

[0005] This invention provides a plastic catheter extrusion nozzle for medical device processing, specifically comprising: a main body; the main body is an extrusion nozzle body, the main body is a cylindrical structure with a central protrusion, the outer side of the top of the main body is threaded, the interior of the main body is a cylindrical structure with both ends protruding in the middle, the main body includes: a stop block, the stop block is an arc-shaped plate structure, the stop block has a gap in the middle position, the stop blocks are evenly arranged and fixed inside the arc-shaped groove of the insulation component; a moving head, the top of the moving head is a cylindrical structure with a central protrusion, the outer side of the top of the moving head is fitted with a spring, the outer side of the bottom of the moving head is an inclined structure, the interior of the moving head has a discharge pipe, the top of the moving head and the spring are installed inside the main body, the top of the moving head has a top groove, the top groove is an inclined structure, a rectangular groove is provided on each side of the top groove, a force-bearing plate is embedded inside the top groove, and a pull rod is embedded inside the rectangular groove; a moving plate, the moving plate is a U-shaped structure, the moving plate is made of metal, the moving plate is located at the bottom of the moving head, a scraper groove is provided on the inner and outer sides of the moving plate, the upper and lower sides of the outer end of the scraper groove are inclined structures.

[0006] Optionally, the main body further includes: a contact element, which is a hemispherical structure and is uniformly arranged in a ring inside the main body. A through groove is provided at the top of each of the two sides of the main body, and the through groove has a rectangular structure. The main body further includes: a force-bearing plate, which is a conical structure and is installed inside the main body. A tie rod is provided on each side of the force-bearing plate, and the tie rod has a Z-shaped structure, with its middle position inserted into the through groove. The main body further includes: a guide plate, which is an L-shaped plate structure. Two guide plates are provided, each fixed to the outer end of one of the two tie rods. Each guide plate has a guide groove inside, which has an inclined structure and arc-shaped ends. The main body further includes: a thermal insulation element, which is a cylindrical structure and is installed on the outside of the main body. The interior of the thermal insulation element contacts the contact element. The thermal insulation element is made of thermal insulation material and has a ring-shaped cylindrical inner cavity inside. An arc-shaped groove is provided on each side of the thermal insulation element.

[0007] Optionally, the moving head further includes: a bottom component, which is a conical structure and is installed at the bottom of the moving head via two triangular rods; the moving head further includes: an outer component, which is a circular structure with a cylindrical structure protruding in the middle of the bottom inside; the outer component is installed on the outside of the bottom of the moving head, and the bottom of the outer component is inserted into the bottom of the outer component; two auxiliary components are provided on each side of the outer component; the top of the auxiliary component consists of a wedge-shaped block and a round rod, and the bottom of the auxiliary component consists of a rectangular plate and a wedge-shaped block; the moving head further includes: a bottom rod, which is a rectangular structure, and there are two bottom rods. The two bottom rods are fixed on the bottom sides of the moving head respectively, and each bottom rod has a sliding groove inside, which is a rectangular structure.

[0008] Optionally, the movable plate further includes: a collection groove, which has an arc-shaped structure and is located inside the scraping groove; the movable plate further includes: a guide plate, which has a rectangular structure, and two guide plates are provided. The two guide plates are respectively fixed on the top two sides of the movable plate. Each guide plate has a force-receiving head on the inner side of its top, which has a cylindrical structure and is inserted into the guide groove.

[0009] Beneficial effects

[0010] According to various embodiments of the present invention, compared with conventional extrusion nozzles, the moving plate can automatically shift by receiving power from the force-receiving head, thereby enabling the scraper groove to automatically scrape off the initially discharged material.

[0011] Furthermore, by installing a moving head, during use, the material flows through the interior of the main body, allowing it to contact the force plate and the moving head, thus impacting and displacing it. This causes the force plate and the moving head to move together. After the force plate moves, it is stopped by a pull rod, preventing it from moving further. The material then passes over the outside of the force plate, continuing to push the moving head downwards. This compresses the spring on the outside of the moving head, allowing the material to be extruded and formed. When the device is no longer in use, the material flow stops, the spring pushes the moving head back to its original position, allowing the force plate to embed into the top groove, sealing the top of the moving head. The moving head then drives the force plate to continue moving upwards, pushing the material upwards and reducing the amount of material inside the main body, thus reducing the chance of blockage.

[0012] In addition, by installing the insulation component, when the moving head moves downwards along with the force plate, the pull rod can press the insulation component downwards together, so that the insulation component can be insulated at the bottom of the main body. After the pull rod stops moving, the contact component makes auxiliary contact with the insulation component, so that the insulation component can be fixed. The outer component continues to move downwards, so that the bottom of the inner part of the outer component can form a vacuum with the bottom of the insulation component, preventing air flow. This allows the main body and the outer side of the moving head to be insulated in all directions. After the moving head is reset, the air inside the moving head is compressed, so that the air can push the stop block to be discharged, so that the insulation component can be placed inside the pull component again.

[0013] Furthermore, by installing a movable plate, when the force plate cannot move downwards, but the movable head continues to move downwards, the material is initially squeezed downwards. As the movable head continues to move downwards, it drives the movable plate to move as well, allowing the force head to move inside the guide groove. Since the guide groove has an inclined structure, the force head and guide plate drive the movable plate to move to the side, allowing the scraper to contact the initially discharged material, thereby scraping and removing the material and preventing deformation of the initially discharged material. When the movable head stops discharging material and resets, the movable plate can move again, allowing the scraper on the right side to scrape off the remaining material again, preventing material from remaining at the bottom of the movable head. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0015] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0016] In the attached diagram:

[0017] Figure 1 A schematic diagram of the three-dimensional structure of the extrusion nozzle according to an embodiment of the present invention is shown;

[0018] Figure 2A schematic diagram of the bottom view structure of the extrusion nozzle according to an embodiment of the present invention is shown;

[0019] Figure 3 A schematic diagram of the exploded three-dimensional structure of an extrusion nozzle according to an embodiment of the present invention is shown;

[0020] Figure 4 A schematic diagram of the exploded bottom view of the extrusion nozzle according to an embodiment of the present invention is shown;

[0021] Figure 5 A schematic diagram showing the exploded three-dimensional structure and a partially enlarged cross-section of the main body of the extrusion nozzle according to an embodiment of the present invention is shown;

[0022] Figure 6 A schematic diagram of the top view of the moving head structure of the extrusion nozzle according to an embodiment of the present invention is shown;

[0023] Figure 7 A schematic diagram of a partial cross-sectional three-dimensional structure of the moving head of the extrusion nozzle according to an embodiment of the present invention is shown;

[0024] Figure 8 A schematic diagram of the three-dimensional structure of the moving plate of the extrusion nozzle according to an embodiment of the present invention is shown.

[0025] List of reference numerals

[0026] 1. Main body; 101. Contact element; 102. Through groove; 103. Force plate; 104. Tie rod; 105. Guide plate; 106. Guide groove; 107. Thermal insulation element; 108. Stop block;

[0027] 2. Moving head; 201. Top groove; 202. Bottom component; 203. Outer component; 204. Auxiliary component; 205. Bottom rod; 206. Slide groove;

[0028] 3. Moving plate; 301. Scraper groove; 302. Collection groove; 303. Guide plate; 304. Force-bearing head. Detailed Implementation

[0029] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0030] Example: Please refer to Figures 1 to 8 :

[0031] This invention proposes a plastic conduit extrusion nozzle for medical device processing, comprising: a main body 1; the main body 1 is the extrusion nozzle body, the main body 1 is a cylindrical structure with a central protrusion, the outer side of the top of the main body 1 is provided with threads, allowing the main body 1 to be freely installed and used through the threads, the interior of the main body 1 is a cylindrical structure with both ends protruding in the middle, allowing the moving head 2 and the spring to be installed and moved inside, thereby automatically extending and retracting in advance, the main body 1 includes: a stop block 108, the stop block 108 is an arc-shaped plate structure, the middle position of the stop block 108 is provided with a gap, allowing air to enter and exit quickly, allowing the heat insulation component 107 to quickly enter the interior of the outer component 203, while preventing air circulation inside the outer component 203, thus improving the heat insulation effect, the stop blocks 108 are evenly arranged and fixed inside the arc-shaped groove of the heat insulation component 107; a moving head 2, the top of the moving head 2 is a cylindrical structure with a central protrusion, which can be pulled inside the main body 1 and will not detach, the outer side of the top of the moving head 2 is fitted with a spring to stop the material. When discharging, the spring can push the moving head 2 to reset. The bottom outer side of the moving head 2 has an inclined structure. The inside of the moving head 2 is equipped with a discharge pipe, which allows the material to be extruded into a plastic conduit. The top of the moving head 2 and the spring are installed inside the main body 1. The top of the moving head 2 has a top groove 201 with an inclined structure, which can help to collect the discharged material and fit with the bottom of the force plate 103 to improve the sealing. There is a rectangular groove on each side of the top groove 201 to embed the bottom of the pull rod 104. The force plate 103 is embedded inside the top groove 201, and the pull rod 104 is embedded inside the rectangular groove. The moving plate 3 has a U-shaped structure, which allows the scraper 301 to scrape the material multiple times. The moving plate 3 is made of metal and is located at the bottom of the moving head 2. There is a scraper 301 on the inner and outer sides of the moving plate 3. The upper and lower sides of the outer end of the scraper 301 have an inclined structure, which allows the scraped material to be easily collected.

[0032] like Figure 5As shown, the main body 1 further includes: a contact member 101, which is a hemispherical structure and is uniformly arranged in a ring inside the main body 1 to contact the insulation member 107, thereby preventing the insulation member 107 from shifting significantly. A through groove 102 is provided at the top of each side of the main body 1. The through groove 102 is a rectangular structure, used to allow the pull rod 104 to pass through, allowing the pull rod 104 to be displaced under force while having room to move. The main body 1 also includes: a force-bearing plate 103, which is a conical structure and can fit into the top groove 201. The force-bearing plate 103 is installed inside the main body 1. A pull rod 104 is provided on each side of the force-bearing plate 103. The pull rod 104 is a Z-shaped structure, with its middle position inserted into the through groove 102, which can restrict the movement of the force-bearing plate 103 and prevent continuous displacement. The main body 1 also includes: a guide plate 105, which is an L-shaped plate structure. There are two guide plates 105, which are fixed to the outer ends of the two pull rods 104 respectively. They are used to move together with the pull rods 104 and can also assist in pushing the insulation component 107 to move. Each guide plate 105 has a guide groove 106 inside. The guide groove 106 has an inclined structure and arc-shaped structures at both ends to embed the force receiving head 304. After the guide plate 105 stops moving, when the force receiving head 304 continues to move downward with the moving plate 3, it can control the lateral displacement of the moving plate 3. The main body 1 also includes: insulation component 107. The insulation component 107 has a cylindrical structure and is installed on the outside of the main body 1. The inside of the insulation component 107 contacts the contact component 101. The insulation component 107 is made of insulation material. The insulation component 107 has a ring-shaped cylindrical inner cavity inside, which can enhance the insulation effect. There is an arc-shaped groove on each side of the insulation component 107 to allow air to circulate inside.

[0033] like Figure 6 and Figure 7As shown, the moving head 2 further includes: a bottom component 202, which has a conical structure to divert the material during discharge, allowing it to exit in a tubular manner. The bottom component 202 is installed inside the bottom of the moving head 2 by two triangular rods, which fix the bottom component 202 and prevent the material discharge from being affected. The moving head 2 also includes: an outer component 203, which has a circular structure and an interior cylindrical structure with a raised center at the bottom. It is installed on the outside of the moving head 2 and can be embedded in the bottom of the insulation component 107. The outer component 203 is installed on the bottom outside of the moving head 2, and the bottom of the insulation component 107 is inserted into the interior of the outer component 203. Two auxiliary components 204 are provided on both sides of the outer component 203. The top of the auxiliary component 204 consists of a wedge-shaped block and a round rod, and the bottom of the auxiliary component 204 consists of a rectangular plate and a wedge-shaped block. These components are used to increase the stability of the moving head 2 and the outer component 203, so that the moving head 2 will not rotate when it moves downward. The moving head 2 also includes a bottom rod 205. The bottom rod 205 has a rectangular structure, and there are two bottom rods 205. The two bottom rods 205 are fixed on both sides of the bottom of the moving head 2. Each bottom rod 205 has a sliding groove 206 inside. The sliding groove 206 has a rectangular structure, so that the two bottom rods 205 and the two sliding grooves 206 can be used to install the moving plate 3, so that the moving plate 3 can be guided to displacement.

[0034] like Figure 8 As shown, the movable plate 3 further includes: a collection trough 302, which is an arc-shaped structure and is located inside the scraper trough 301. After the scraper trough 301 scrapes and collects the material, the material can flow into the collection trough 302 for storage. The movable plate 3 also includes: a guide plate 303, which is a rectangular structure. There are two guide plates 303, which are fixed on the top two sides of the movable plate 3 to support the force-bearing head 304. When the force-bearing head 304 moves, it can drive the movable plate 3 to move together. Each guide plate 303 has a force-bearing head 304 on the inner side of its top. The force-bearing head 304 is a cylindrical structure and is inserted into the guide groove 106. It can move inside the guide groove 106 and control the lateral movement of the movable plate 3 so that the scraper trough 301 can scrape and collect excess material.

[0035] The specific usage and function of this embodiment: In this invention, when the device is needed, the top of the main body 1 can be manually controlled to be installed by threads, so that the main body 1 can be stably connected. When the material is discharged, the material contacts the top of the force plate 103 and the moving head 2, so that the force plate 103 can move downward together with the moving head 2, so that the spring can be compressed. The force plate 103 pushes the heat insulation component 107 downward together. Then the force plate 103 is pulled and limited by the pull rod 104, so that the material is discharged downward through the outside of the force plate 103, so that the material impacts the moving head 2, so that the moving head 2 continues to move downward. At this time, the material is initially discharged through the diversion of the bottom component 202. When the moving head 2 continues to move downward, the contact component 101 contacts the heat insulation component 107, so that the heat insulation component 107 cannot move downward. At the same time, the force head 304 slides inside the guide groove 106, so that the moving plate 3 can slide inside the slide groove 206, so that the scraper 301 can scrape the initially discharged material twice, so that the initially discharged material can be The material is collected and stored inside the collection tank 302, thus preventing deformation of the initially discharged material. At the same time, the insulation component 107 is located inside and above the outer component 203, allowing the bottom of the outer component 203 to maintain a vacuum. This allows the baffle 108 to seal the arc-shaped groove of the insulation component 107, preventing air circulation and thus improving the insulation effect on the outside of the main body 1 and the moving head 2. This prevents the material from solidifying when the discharge is temporarily stopped. After the material discharge stops, the moving head 2 receives spring power to reset, causing the force-bearing head 304 to move in the opposite direction inside the guide groove 106. This allows the scraper groove 301 at the right end to scrape the material again, preventing material residue at the bottom of the moving head 2. Simultaneously, the outer component 203 pushes the insulation component 107 to reset. After the moving head 2 rises, it embeds into the bottom of the force-bearing plate 103 through the top groove 201, preventing flow inside the main body 1. This allows the material inside the main body 1 to be pushed upwards and discharged, preventing blockage caused by the material solidifying inside the main body 1. This completes the extrusion molding of the plastic conduit.

[0036] Finally, it should be noted that when describing the position of each component and the mating relationship between them, the present invention usually uses one or a pair of components as examples. However, those skilled in the art should understand that such positions, mating relationships, etc., are also applicable to other components or other pairs of components.

[0037] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1. A plastic catheter extrusion nozzle for medical device processing, characterized in that, include: main body; The main body is the extrusion nozzle body. The top outer side of the main body is threaded. The inside of the main body is a cylindrical structure with two ends and a middle protrusion. The main body includes: a stop block, a gap in the middle of the stop block, and the stop blocks are evenly arranged and fixed inside the arc-shaped groove of the insulation component. The main body also includes a load-bearing plate, which is installed inside the main body. A tie rod is provided on each side of the load-bearing plate, and the middle position of the tie rod is inserted into the through groove. Guide plate, the guide plate is fixed to the outer end of the pull rod, and the guide plate has a guide groove inside; The moving head has a spring fitted on the outer side of its top end and an inclined structure on the outer side of its bottom. The moving head has a discharge pipe inside. The top end of the moving head and the spring are installed inside the main body. The top end of the moving head has a top groove, and there is a rectangular groove on each side of the top groove. A force-bearing plate is embedded inside the top groove, and a pull rod is embedded inside the rectangular groove. The moving head also includes a base piece, which is mounted on the inner bottom of the moving head via a triangular rod; The moving head also includes: an outer part, the interior of which is a cylindrical structure with a raised center at the bottom. The outer part is installed on the outer side of the bottom of the moving head. The bottom of the outer part is inserted into the interior of the outer part. Two auxiliary parts are provided on each side of the outer part. The top of the auxiliary parts consists of a wedge-shaped block and a round rod, and the bottom of the auxiliary parts consists of a rectangular plate and a wedge-shaped block. The moving plate is located at the bottom of the moving head. There is a scraping groove on both the inner and outer sides of the moving plate. The upper and lower sides of the outer end of the scraping groove are inclined. The movable plate also includes: a guide plate, which is fixed to the top of the movable plate, and a force-receiving head is provided on the inner side of the top of the guide plate, which is inserted into the guide groove; The movable plate also includes a collection trough, which is located inside the scraping trough.

2. The plastic catheter extrusion nozzle for medical device processing as described in claim 1, characterized in that: The main body also includes: contact elements, which are arranged in a ring and fixed inside the main body. A through groove is provided at the top of each of the two sides of the main body.

3. The plastic catheter extrusion nozzle for medical device processing as described in claim 1, characterized in that: The main body also includes: a heat insulation component, which is installed on the outside of the main body. The inside of the heat insulation component is in contact with the contact component. The inside of the heat insulation component has a cylindrical inner cavity arranged in a ring, and an arc-shaped groove is provided on each side of the heat insulation component.

4. The plastic catheter extrusion nozzle for medical device processing as described in claim 1, characterized in that: The moving head also includes a base rod, which is fixed to the bottom of the moving head and has a sliding groove inside.

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