CN215203374U

CN215203374U - Become chamber pipe extrusion system

Info

Publication number: CN215203374U
Application number: CN202121287212.4U
Authority: CN
Inventors: 曹轲; 朱定俊; 陈亮
Original assignee: Hubei Kangquan Medical Technology Co ltd
Current assignee: Hubei Kangquan Medical Technology Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2021-12-17
Anticipated expiration: 2031-06-09

Abstract

A variable-cavity catheter extrusion system comprises an extrusion die head, wherein a first die and a second die which can move back and forth are arranged in the extrusion die head, the first die is of a hollow structure, and the second die is sleeved in the first die; the extrusion die head is arranged on the fixing frame, and the fixing frame is provided with a pushing device for driving the first die and the second die to move. The utility model provides a become chamber pipe extrusion system, the speed and the distance that the first mould of control and second mould that can be accurate removed can change the gesture of mould in extrusion process, realize once only extruding the pipe of different section shapes.

Description

Become chamber pipe extrusion system

Technical Field

The utility model relates to a medical extrusion molding technical field who becomes chamber pipe, especially a become chamber pipe extrusion system.

Background

Solid silicone rubber (high temperature vulcanized silicone rubber HTV), rubber compound and the like can be formed by an extrusion mode, and the extrusion molding is one of important molding methods for molding and processing rubber such as silicone rubber and the like. The production efficiency is high, the application range is wide, and various rubber tubes, rubber strips, hollow products and different-property rubber products can be extruded. Rubber products produced by extrusion molding are widely applied to agriculture, building industry, mechanical industry, automobile industry, national defense industry and medical industry.

The extrusion molding method is a continuous molding process method for adding the rubber material into the vulcanizing agent, mixing, extruding the silica gel by an extruder, feeding the silica gel into a die, and extruding into a product with a certain section shape.

The traditional variable-cavity extrusion system is mainly used for pneumatic propulsion, the distance between the extension and retraction of the inner core of the die can not be accurately positioned and adjusted, so that the adjustability of the die is poor, and the traditional variable-cavity extrusion system can not be used for processing a catheter with a complex structure and multiple variable cavities for medical treatment and is not beneficial to the quality of extruded products.

Disclosure of Invention

The utility model aims to solve the technical problem that a become chamber pipe extrusion system is provided, but position and speed that the accurate adjustment mould inner core advanced, moved back to can change the mould gesture many times extruding the in-process, can once only extrude the pipe of different section shapes.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a variable-cavity catheter extrusion system comprises an extrusion die head, wherein a first die and a second die which can move back and forth are arranged in the extrusion die head, the first die is of a hollow structure, and the second die is sleeved in the first die; the extrusion die head is arranged on the fixing frame, and the fixing frame is provided with a pushing device for driving the first die and the second die to move.

Preferably, two sliding plates are arranged in the fixing frame and are respectively used for driving the first die and the second die to move, the sliding plates are limited on the sliding rods to slide, and the fixing frame further comprises a pushing device used for driving the sliding plates to move.

Preferably, the pushing device comprises a stepping motor, an output shaft of the stepping motor is fixedly connected with a screw rod, the screw rod penetrates through the sliding plates and is in threaded connection with the sliding plates, the first die and the second die are respectively fixed on the two sliding plates, and the second die penetrates into the first die.

Preferably, the fixing frame comprises a first fixing plate and a second fixing plate, the extrusion die head is arranged on one side of the first fixing plate, and the second fixing plate is arranged on the other side of the first fixing plate and is fixedly connected with the first fixing plate through a sliding rod, so that the sliding plate slides between the first fixing plate and the second fixing plate.

Preferably, the two sides of the extrusion die head are respectively provided with a feeding rod, the feeding rods are connected into the extrusion die head, and the end parts of the feeding rods are provided with feeding heads used for being connected with an extruder.

Preferably, the discharge end of the extrusion die head is provided with a cooling head, a circulating water path is arranged in the cooling head, and the circulating water path is connected with the water inlet pipe and the water outlet pipe.

Preferably, the inner sides of the first fixing plate and the second fixing plate are respectively provided with a distance sensor for detecting the position of the sliding plate.

Preferably, the distance sensor is an infrared distance measuring sensor.

The utility model provides a become chamber pipe extrusion system, the speed and the distance that the first mould of control and second mould that can be accurate removed can change the gesture of mould in extrusion process, realize once only extruding the pipe of different section shapes.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic side view of the present invention;

fig. 3 is a schematic structural view of the die head of the present invention;

fig. 4 is a schematic structural view of the circulation water path of the present invention.

Detailed Description

As shown in fig. 1-3, a variable-cavity catheter extrusion system includes an extrusion die head 1, a first mold 2 and a second mold 3 which can move back and forth are arranged in the extrusion die head 1, the first mold 2 is a hollow structure, and the second mold 3 is sleeved in the first mold 2; the extrusion die head 1 is arranged on a fixing frame, and a pushing device for driving the first die 2 and the second die 3 to move is arranged on the fixing frame. The fixed frame is used for loading the whole system. Has the functions of supporting and fixing.

Preferably, two sliding plates 4 are arranged in the fixing frame and are respectively used for driving the first die 2 and the second die 3 to move, the sliding plates 4 are limited on the sliding rods 5 to slide, and the fixing frame further comprises a pushing device used for driving the sliding plates 4 to move.

Preferably, the pushing device comprises a stepping motor 6, a screw 7 is fixedly connected to an output shaft of the stepping motor 6, the screw 7 penetrates through the sliding plate 4 and is in threaded connection with the sliding plate 4, the first die 2 and the second die 3 are respectively fixed on the two sliding plates 4, and the second die 3 penetrates into the first die 2. The stepping motor is adjusted and controlled by the controller, so that the position and the speed of the whole transmission system are controlled, and the rubber material is molded after passing through the extrusion die according to the set requirements.

Preferably, the fixing frame comprises a first fixing plate 8 and a second fixing plate 9, the extrusion die head 1 is arranged on one side of the first fixing plate 8, and the second fixing plate 9 is arranged on the other side of the first fixing plate 8 and is fixedly connected through a sliding rod 5, so that the sliding plate 4 slides between the first fixing plate 8 and the second fixing plate 9.

Preferably, the two sides of the extrusion die head 1 are respectively provided with a feeding rod 10, the feeding rods 10 are connected into the base die head 1, and the end parts of the feeding rods 10 are provided with feeding heads 11 for connecting with an extruder.

Preferably, as shown in fig. 4, a cooling head 12 is provided at the discharge end of the extrusion die head 1, and a circulation water path is provided in the cooling head 12, and the circulation water path is connected to a water inlet pipe 13 and a water outlet pipe 14.

Preferably, a distance sensor 15 for detecting the position of the slide plate 4 is provided on the inner side of each of the first and

second fixing plates

8 and 9.

Preferably, the distance sensor 15 is an infrared distance measuring sensor.

Preferably, the distance sensor 15 and the stepping motor 6 are both electrically connected to the controller. The distance sensor 15 is used to control the extreme positions of the mould pushing system to prevent the entire system from being damaged.

When the stepping motor is used, the controller outputs a pneumatic signal to the stepping motor, and the stepping motor works and rotates. The stepping motor 4 drives the sliding plate 4 to move back and forth after working. The sliding plate 4 moves and simultaneously drives the first die 2 and the second die 3 to move back and forth, thereby achieving the purpose of changing the cavity for many times. The distance sensor 15 is used for limiting in the moving process, and the system is guaranteed not to be damaged by impact in the moving process. The extruder extrudes the compound through feed bar 10 into extrusion die 1 as the entire system is running. Circulating water is connected to the cooling head 12 to cool the extrusion system, and the temperature of the rubber material is kept stable.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. A variable-cavity catheter extrusion system comprising an extrusion die head (1), characterized in that: a first die (2) and a second die (3) which can move back and forth are arranged in the extrusion die head (1), the first die (2) is of a hollow structure, and the second die (3) is sleeved in the first die (2); the extrusion die head (1) is arranged on a fixing frame, and a pushing device for driving the first die (2) and the second die (3) to move is arranged on the fixing frame.

2. The variable lumen catheter extrusion system of claim 1, wherein: the die is characterized in that two sliding plates (4) are arranged in the fixing frame and are respectively used for driving the first die (2) and the second die (3) to move, the sliding plates (4) are limited to slide on the sliding rods (5), and the die further comprises a pushing device used for driving the sliding plates (4) to move.

3. The variable lumen catheter extrusion system of claim 2, wherein: the pushing device comprises a stepping motor (6), an output shaft of the stepping motor (6) is fixedly connected with a screw rod (7), the screw rod (7) penetrates through the sliding plates (4) and is in threaded connection with the sliding plates (4), the first die (2) and the second die (3) are fixed on the two sliding plates (4) respectively, and the second die (3) penetrates into the first die (2).

4. The variable lumen catheter extrusion system of claim 2 or 3, wherein: the fixing frame comprises a first fixing plate (8) and a second fixing plate (9), the extrusion die head (1) is arranged on one side of the first fixing plate (8), the second fixing plate (9) is arranged on the other side of the first fixing plate (8) and is fixedly connected with the first fixing plate (8) through a sliding rod (5), and the sliding plate (4) slides between the first fixing plate (8) and the second fixing plate (9).

5. The variable lumen catheter extrusion system of claim 1, wherein: the extrusion die is characterized in that feeding rods (10) are respectively arranged on two sides of the extrusion die head (1), the feeding rods (10) are connected into the extrusion die head (1), and the end parts of the feeding rods (10) are provided with feeding heads (11) used for being connected with an extruder.

6. The variable lumen catheter extrusion system of claim 1, wherein: the extrusion die head is characterized in that a cooling head (12) is arranged at the discharge end of the extrusion die head (1), a circulating water path is arranged in the cooling head (12), and the circulating water path is connected with a water inlet pipe (13) and a water outlet pipe (14).

7. The variable lumen catheter extrusion system of claim 4, wherein: and distance sensors (15) for detecting the positions of the sliding plates (4) are arranged on the inner sides of the first fixing plate (8) and the second fixing plate (9).

8. The variable lumen catheter extrusion system of claim 7, wherein: the distance sensor (15) adopts an infrared distance measuring sensor.