CN109248371B

CN109248371B - Novel sacculus former

Info

Publication number: CN109248371B
Application number: CN201811102344.8A
Authority: CN
Inventors: 陈子运
Original assignee: Zhengzhou Bitao Medical Technology Co ltd
Current assignee: Zhengzhou Bitao Medical Technology Co ltd
Priority date: 2018-09-20
Filing date: 2018-09-20
Publication date: 2023-10-20
Anticipated expiration: 2038-09-20
Also published as: CN109248371A

Abstract

The application discloses novel balloon forming equipment, which belongs to the technical field of medical equipment and aims to solve the technical problems that the existing balloon forming equipment is uneven in heating and low in heating speed, and different heating and cooling devices are required to be replaced when different-size balloons are processed. The application has the characteristics of improving heating efficiency and forming balloons with different sizes without changing a heating and cooling device.

Description

Novel sacculus former

Technical Field

The application belongs to the technical field of medical equipment, and particularly relates to novel balloon forming equipment.

Background

Balloon catheters are key devices for dredging blood vessels and other lumens of the human body and for delivering stents in widespread use, and are the most critical components on balloon catheters. The balloon is generally required to have extremely high burst resistance, and is required to be thin-walled, flexible and foldable. To meet these requirements, not only is the polymer material used required to have extremely strong mechanical and physical properties, but also high requirements are placed on the molding process. In order to meet the process requirements, the forming equipment must accurately and efficiently provide heating, pressurization, and a wide range of speed and displacement adjustments, as well as accurate temperature and pressure control. Efficient heating and cooling systems and flexible drive trains have been the goal of balloon molding equipment development. The techniques commonly used in balloon forming equipment at present include: heating and cooling sleeve, mould, high-pressure nitrogen gas supply system, clamping and transmission system.

The prior art extrusion molded polymeric tube is first stretched at both ends to facilitate passage through the die end holes. This process requires a separate stretching apparatus. The core part of the existing balloon forming equipment is a heating and cooling sleeve. The interlayer of the heating and cooling sleeve is provided with a plurality of electric heating rods to meet the requirement of rapid and uniform heating, and meanwhile, cooling water is directly introduced during the cooling of the interlayer space so as to rapidly cool the die, and the core of the heating and cooling sleeve is provided with the die. The heating and cooling sleeve heats the internal guide pipe through the die, and after the guide pipe is softened, the guide pipe is inflated and is tightly attached to the inner wall of the die to form a balloon under the combined action of inflation of high-pressure nitrogen in the guide pipe and stretching of chucks at two ends. And then carrying out heat preservation, pressure maintaining and shaping, and then cooling and shaping to finish the forming process of the ball bag.

Firstly, the heavy heating and cooling sleeve is required to be heated from room temperature to a forming temperature, kept warm and then cooled to the room temperature in each forming period. The system has larger thermal inertia due to the volume of the heating and cooling sleeve and the addition of the die, thus fundamentally limiting the molding efficiency, and the larger the balloon is, the larger the heating and cooling sleeve is, the larger the thermal inertia is, so that the heating is uneven and the heating and cooling speed is low in the balloon molding process, and the balloon molding efficiency is low; second, for balloons of different diameters and lengths, correspondingly sized heating and cooling jackets must be used, which requires the user to purchase many different sized heating and cooling jackets, making the subsequent cost of the device extremely high.

Disclosure of Invention

The application aims at: in order to solve the technical problems that the conventional balloon forming equipment is not uniform in heating, low in heating speed and different heating and cooling devices are required to be replaced when processing balloons with different sizes, the novel balloon forming equipment has the characteristics of uniform heating, high in heating speed and capability of forming balloons with different sizes without replacing the heating and cooling devices.

The technical scheme adopted by the application is as follows:

the novel balloon forming equipment comprises a cross beam, wherein a heating assembly, a transmission assembly and a clamp assembly are arranged on the cross beam, a first movable seat is movably connected on the cross beam, the first movable seat is arranged up and down symmetrically on the heating assembly, the heating assembly comprises a lifting cylinder and a heating sleeve, the lifting cylinder is fixedly arranged on the first movable seat, one side of the lifting cylinder is in transmission connection with the heating sleeve, the heating sleeve comprises a cavity, a fan, a heating core and a spray head are arranged in the cavity, one end in the cavity is fixedly provided with the fan, the other end in the cavity is fixedly provided with the spray head, and a heating core is arranged between the spray head and the fan;

the transmission assembly comprises a synchronous belt, a first stepping motor, a first synchronous wheel, a second moving seat, a second stepping motor and a second synchronous wheel, wherein the synchronous belt is fixedly arranged at two ends of the beam, the first stepping motor is fixedly arranged on the first moving seat, the first synchronous wheel is connected with the first stepping motor in a transmission manner, the first synchronous wheel is connected with the synchronous belt in a meshed manner, the second moving seat is connected with the beam in a bilateral symmetry manner, the rear side of the second moving seat is fixedly connected with the second stepping motor, the second stepping motor is connected with the second synchronous wheel in a transmission manner, the second synchronous wheel is connected with the synchronous belt in a meshed manner, and the clamp assembly is arranged at the front side of the second moving seat.

The fixture assembly comprises a left chuck and a right chuck, a die is arranged between the left chuck and the right chuck, a bracket is movably arranged on the cross beam, a working groove is formed in the bracket, the die is arranged in the working groove, the left chuck and the right chuck are fixedly arranged on the second movable seat, and a pressurizing assembly is arranged on one side of the left chuck.

In a further preferred aspect of the present application, the pressurizing assembly includes a pressurizing cylinder and a sealing member, one side of the left chuck is fixedly connected with the sealing member, the pressurizing assembly is fixedly arranged on the second moving seat, the pressurizing cylinder is communicated with the sealing member, the sealing member is arranged between the sealing member and the mold,

in a further preferred aspect of the present application, the pressing assembly includes an upper pressing head and a lower pressing head, the upper pressing head is in driving connection with a pressing cylinder, and the pressing cylinder is fixedly disposed on the second moving seat.

In a further preferred aspect of the present application, a first sliding component is disposed between the first moving seat and the cross beam, the first sliding component includes a first sliding rail and a first sliding block, the first sliding rail is disposed symmetrically on the cross beam, and the first sliding rail is slidably connected with the first sliding block.

In a further preferred aspect of the present application, a second sliding assembly is disposed between the second moving seat and the cross beam, the second sliding assembly includes a second sliding rail and a second sliding block, the second sliding rail is disposed symmetrically on the cross beam, and the second sliding rail is slidably connected with the second sliding block.

In a further preferred aspect of the present application, a first sliding groove is provided on the first moving seat, and a third sliding block adapted to the first sliding groove is provided on the cavity, and the third sliding block is slidably connected with the first sliding groove.

Working principle: when the ball forming device works, the die is placed in the die support and fixed, the guide pipe is placed in the die, the left end of the guide pipe is inserted into the sealing piece, the pressurizing cylinder is started to pressurize and seal the guide pipe, the guide pipe is clamped under the clamping action of the left chuck and the right chuck, the lifting cylinder drives the heating sleeve to move up and down on the first moving seat, the fan in the cavity blows hot air around the heating core to form turbulent hot air, the turbulent hot air is sprayed onto the die by the spray head to heat the guide pipe in the die, the turbulent hot air is used for directly heating the surface of the die, the turbulent heat transfer efficiency is higher than that of the pure heat conduction, and the thermal inertia caused by the heavy heating and cooling sleeve is avoided, so that when the turbulent hot air heats the die, the heating is more uniform and faster, the guide pipe is pressurized and inflated through the sealing piece while being heated, meanwhile, the second stepping motor symmetrically arranged at two sides of the die is started, the second stepping motor moves towards two ends on the synchronous belt through the second synchronous belt, the second moving seat stretches the ball towards two ends of the cross beam, the guide pipe is heated through the second moving seat, the guide pipe is heated, the inner wall is heated through the guide pipe, and the guide pipe is heated through the turbulent heat transfer efficiency is higher than the pure heat conduction, and the guide pipe is blown and inflated to form the inner wall after the guide pipe is tightly and blown and inflated by the inner wall.

In summary, due to the adoption of the technical scheme, the beneficial effects of the application are as follows:

1. compared with a heavy heating and cooling sleeve, the application directly heats the surface of the die by utilizing high-speed turbulent hot air, under the combined action of the inflation of high-pressure gas in the guide pipe and the stretching of the clamp component, the guide pipe is inflated and tightly attached to the inner wall of the die to form a ball bag, the turbulent heat transfer efficiency is far higher than that of pure heat conduction, the heat inertia caused by the heavy heating and cooling sleeve is avoided, the whole turbulent hot air is heated more uniformly and more quickly, the heating efficiency is higher, and the heating component can heat a plurality of dies with different length sizes by moving left and right on the synchronous belt through the first stepping motor; the second stepping motor is used for moving left and right on the synchronous belt and clamping the die by the clamp assembly,

2. according to the application, through the clamping action of the left clamping head and the right clamping head on the material pipe, the second synchronous motor can perform stretching action to the two ends of the cross beam.

3. The application seals, pressurizes and charges the material pipe through the combination of the pressurizing cylinder and the sealing piece.

4. The balloon is compression molded by a compression cylinder and through a compression nozzle.

5. The upper pressing head and the lower pressing head of the pressing assembly clamp the material pipe to prevent loosening, and the sealing performance of the sealing piece and the material pipe is improved.

6. Through setting up the first spout on the third slider and the first seat that removes on the cavity for the heating sleeve can reciprocate under the drive of lift cylinder, reduces the rocking of removal in-process, improves stability.

Drawings

The application will now be described by way of example and with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram of the structure of the present application;

FIG. 2 is a front view of the present application;

FIG. 3 is a left side view of the present application;

FIG. 4 is a schematic view of the heating sleeve of the present application;

FIG. 5 is a schematic view of the structure of the heating and cooling assemblies of the present application;

FIG. 6 is a schematic structural view of the outer housing of the present application;

fig. 7 is a schematic view of a part of the structure of the pressurizing assembly of the present application.

Reference numerals: the cooling device comprises a 1-fixed block, a 2-synchronous belt, a 3-second stepping motor, a 4-lifting cylinder, a 5-spray head, a 6-cooling assembly, a 7-first stepping motor, an 8-bracket, a 9-second movable seat, a 10-working groove, an 11-cavity, a 12-heating sleeve, a 13-first sliding groove, a 14-third sliding block, a 15-sealing piece, a 16-cross beam, a 17-first sliding block, a 18-second sliding rail, a 19-left clamping head, a 20-first movable seat, a 21-first sliding rail, a 22-second sliding block, a 23-right clamping head, a 24-mold, a 25-driving cylinder, a 26-pressurizing cylinder, a 27-housing, a 28-protective cover, a 29-pressure sensor, a 30-display screen, a 31-cooling spray head, a 32-heating core, a 33-base and a 34-fan.

Detailed Description

All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.

The application is described in detail below in connection with fig. 1-7.

Embodiment case one: the novel balloon forming equipment comprises a cross beam 16, wherein a heating assembly, a transmission assembly and a clamp assembly are arranged on the cross beam 16, a first movable seat 20 is movably connected to the cross beam 16, the first movable seat 20 is vertically symmetrically provided with the heating assembly, the heating assembly comprises a lifting cylinder 4 and a heating sleeve 12, the first movable seat 20 is fixedly provided with the lifting cylinder 4, one side of the lifting cylinder 4 is in transmission connection with the heating sleeve 12, the heating sleeve 12 comprises a cavity 11, a fan 34, a heating core 32 and a spray head 5 are arranged in the cavity 11, one end in the cavity 11 is fixedly provided with the fan 34, the other end in the cavity 11 is fixedly provided with the spray head 5, and a heating core 32 is arranged between the spray head 5 and the fan 34;

the transmission component is movably connected with the front and back of the beam 16, the transmission component comprises a synchronous belt 2, a first stepping motor 7, a first synchronous wheel, a second moving seat 9, a second stepping motor 3 and a second synchronous wheel, the synchronous belt 2 is fixedly arranged at two ends of the beam 16 through a fixed block 1, the first stepping motor 7 is fixedly arranged on the first moving seat 20, the first stepping motor 7 is in transmission connection with the first synchronous wheel, the first synchronous wheel is in meshed connection with the synchronous belt 2, the beam 16 is in bilateral symmetry and is movably connected with a second moving seat 9, the rear side of the second moving seat 9 is fixedly connected with the second stepping motor 3, the second stepping motor 3 is in transmission connection with the second synchronous wheel, the second synchronous wheel is in meshed connection with the synchronous belt 2, the front side of the second moving seat 9 is provided with a clamp component, the fixture assembly comprises a left chuck 19 and a right chuck 23, a die 24 is arranged between the left chuck 19 and the right chuck 23, a bracket 8 is movably arranged on the cross beam 16, a working groove 10 is arranged on the bracket 8, the die 24 is arranged in the working groove 10, the left chuck 19 and the right chuck 23 are both fixedly arranged on the second movable seat 9, one side of the left chuck 19 is provided with a pressurizing assembly, the pressurizing assembly comprises a pressurizing cylinder 26 and a sealing element 15, one side of the left chuck 19 is fixedly connected with the sealing element 15, the pressurizing cylinder 26 is fixedly arranged on the second movable seat 9, the pressurizing cylinder 26 is communicated with the sealing element 15, a compressing assembly is arranged between the sealing element 15 and the die 24, the compressing assembly comprises an upper compressing head 14 and a lower compressing head 13, the upper compressing head 14 is in transmission connection with the compressing cylinder, the pressing cylinder is fixedly arranged on the second movable seat 9.

In a further preferred aspect of the present application, a first sliding assembly is disposed between the first moving seat 20 and the cross beam 16, the first sliding assembly includes a first sliding rail 21 and a first sliding block 17, the cross beam 16 is vertically symmetrically provided with the first sliding rail 21, and the first sliding rail 21 is slidably connected with the first sliding block 17.

Working principle: when the application works, the conduit is placed into the die 24 and clamped under the clamping action of the left clamping head 19 and the right clamping head 23, the heating sleeve 12 is driven by the lifting cylinder 4 to move up and down on the first moving seat 20, the fan 34 in the cavity 11 blows hot air around the heating core to form turbulent hot air, the turbulent hot air is sprayed onto the die 24 by the spray head 5, the conduit in the die 24 is heated, the turbulent heat transfer efficiency is higher than that of simple heat conduction due to the fact that the turbulent hot air is directly heated on the surface of the die 24 by the turbulent hot air driven by the fan 34, and the turbulent heat transfer efficiency is higher than that of simple heat conduction, and the turbulent hot air is heated more uniformly and faster by no thermal inertia caused by a heavy heating cooling sleeve, so that the die is heated by turbulent hot air, the second stepping motor 3 symmetrically arranged on two sides of the die 24 is started, the second stepping motor 3 moves towards two ends of the synchronous belt 2 by the second synchronous wheel, the balloon is stretched towards two ends of the cross beam 16 by the second moving seat 9, and after the conduit is softened, the conduit is stretched by the high-pressure gas and the conduit is stretched by the clamp assembly, and the inner wall of the conduit is tightly blown to the die 24.

Implementation case two: as shown in fig. 3, this implementation is further optimized on the basis of embodiment 1, the present embodiment focuses on the improvement compared with embodiment 1, and the same features are not repeated, a second sliding assembly is disposed between the second moving seat 9 and the cross beam 16, the second sliding assembly includes a second sliding rail 18 and a second sliding block 22, the cross beam 16 is vertically symmetrically disposed on the second sliding rail 18, the second sliding rail 18 is slidably connected with the second sliding block 22, a first sliding groove 13 is disposed on the first moving seat 20, a third sliding block 14 adapted to the first sliding groove 13 is disposed on the cavity 11, and the third sliding block 14 is slidably connected with the first sliding groove 13.

Implementation case three: as shown in fig. 4, this embodiment is further optimized on the basis of embodiment 1, this embodiment focuses on the improvement compared with embodiment 1, and is not repeated, the heating sleeve 12 includes a cavity 11, a fan 34, a heating core 32 and a nozzle 5 are disposed in the cavity 11, one end in the cavity 11 is fixedly provided with the fan 34, the other end in the cavity 11 is fixedly provided with the nozzle 5, a heating core 32 is disposed between the nozzle 5 and the fan 34, the heating core 32 is electrified to generate high-speed turbulent hot air, and the heating assembly is disposed at the outer side of the mold 24 in an up-down symmetrical manner, so that high-speed turbulent hot air is formed at the outer side of the mold 24, and the heating efficiency is far higher than that of the heating manner of heat conduction, so that the heating sleeve 12 heats the balloon more uniformly and rapidly, and the heating efficiency is improved.

Implementation case four: as shown in fig. 5, this implementation is further optimized on the basis of embodiment 1, this embodiment focuses on the improvement compared with embodiment 1, and the same point is not repeated, the movable first movable seat 20 is provided on the crossbeam 16, the left side of the first movable seat 20 is provided with the heating sleeve 12, the right side of the first movable seat 20 is provided with the cooling assembly 6, the cooling assembly 6 includes the cooling spray head 31 and the driving cylinder 25, the first movable seat 20 is vertically provided with the fixed plate, one side of the fixed plate is provided with the driving cylinder 25, the lower end of the driving cylinder is in transmission connection with the cooling spray head 31, the balloon is rapidly molded by the cooling assembly 6 capable of moving up and down, the structure is simple, high-speed air is provided by external equipment, and the balloon is directly molded. The air for cooling is compressed air taken in from the outside and connected to the cooling nozzle through an air pipe.

Implementation case five: as shown in fig. 6, this implementation is further optimized on the basis of embodiment 1, this embodiment focuses on the improvement compared with embodiment 1, and the same points are not repeated, and fig. 6 is a schematic structural diagram of a housing 27 of the novel balloon forming apparatus, the cross beam 16 is disposed inside the housing 27, a pressurizing cylinder 26 is disposed in the housing 27, a protection cover 28 is disposed on one side of a fan 34, the protection cover 28 is provided with a concentric ring-shaped filter screen, a pressure sensor 29 is disposed at the lower end of the housing 27, and a display screen 30 is mounted on the housing 27.

Implementation case six: as shown in fig. 7, this implementation is further optimized on the basis of embodiment 1, this embodiment focuses on the improvement compared with embodiment 1, and the same point is not repeated, and the balloon needs to be pressurized and inflated in the balloon forming process, and this novel one side of the left chuck 19 is installed with the pressurizing assembly, and is communicated with the balloon through the sealing element 15, and the sealing performance of the sealing element 15 and the catheter is further improved through the upper pressing head and the lower pressing head, high-pressure nitrogen with accurate pressure is provided through the high-pressure nitrogen servo valve 26, and high-pressure gas is conveyed into the balloon through the sealing element 15, so as to complete the pressurizing and inflating.

Although the application has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope and spirit of the principles of this disclosure. More specifically, various variations and modifications may be made to the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure and claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will be apparent to those skilled in the art.

Claims

1. The novel balloon forming equipment comprises a cross beam (16), wherein a heating assembly, a transmission assembly and a clamp assembly are arranged on the cross beam (16), the novel balloon forming equipment is characterized in that a first movable seat (20) is movably connected to the cross beam (16), a plurality of heating assemblies are arranged on the first movable seat (20) in an up-down symmetrical mode, the heating assemblies comprise lifting cylinders (4) and heating sleeves (12), the lifting cylinders (4) are fixedly arranged on the first movable seat (20), one side of each lifting cylinder (4) is in transmission connection with the heating sleeves (12), each heating sleeve (12) comprises a cavity (11), a fan (34), a heating core (32) and a spray head (5) are arranged in the cavity (11), one end in each cavity (11) is fixedly provided with the fan (34), the other end in each cavity (11) is fixedly provided with the spray head (5), and a heating core (32) is arranged between each spray head (5) and each fan (34);

the transmission assembly comprises a synchronous belt (2), a first stepping motor (7), a first synchronous wheel, a second moving seat (9), a second stepping motor (3) and a second synchronous wheel, wherein the synchronous belt (2) is fixedly arranged at two ends of the beam (16), the first stepping motor (7) is fixedly arranged on the first moving seat (20), the first synchronous wheel is connected to the first stepping motor (7) in a transmission manner, the first synchronous wheel is connected with the synchronous belt (2) in a meshing manner, the second moving seat (9) is fixedly connected to the rear side of the beam (16) in a bilateral symmetry manner, the second synchronous wheel is connected to the second stepping motor (3) in a transmission manner, the second synchronous wheel is connected to the second stepping motor (3) in a meshing manner, and the clamp assembly is arranged on the front side of the second moving seat (9).

2. The novel balloon molding equipment according to claim 1, wherein the clamp assembly comprises a left clamp head (19) and a right clamp head (23), a die (24) is arranged between the left clamp head (19) and the right clamp head (23), a bracket (8) is movably arranged on the cross beam (16), a working groove (10) is formed in the bracket (8), the die (24) is arranged in the working groove (10), the left clamp head (19) and the right clamp head (23) are fixedly arranged on the second movable seat (9), and a pressurizing assembly is arranged on one side of the left clamp head (19).

3. The novel balloon forming equipment according to claim 2, wherein the pressurizing assembly comprises a pressurizing cylinder (26) and a sealing piece (15), one side of the left chuck (19) is fixedly connected with the sealing piece (15), the pressurizing cylinder (26) is fixedly arranged on the second movable seat (9), the pressurizing cylinder (26) is communicated with the sealing piece (15), and a compressing assembly is arranged between the sealing piece (15) and the left chuck (19).

4. The novel balloon molding apparatus of claim 3, wherein the compression assembly comprises an upper compression head and a lower compression head, the upper compression head is drivingly connected with a compression cylinder, and the compression cylinder is fixedly disposed on the second movable seat.

5. The novel balloon molding apparatus according to claim 1, wherein a first sliding component is arranged between the first moving seat (20) and the cross beam (16), the first sliding component comprises a first sliding rail (21) and a first sliding block (17), the first sliding rail (21) is symmetrically arranged on the cross beam (16) up and down, and the first sliding rail (21) is in sliding connection with the first sliding block (17).

6. The novel balloon forming equipment according to claim 1, wherein a second sliding assembly is arranged between the second movable seat (9) and the cross beam (16), the second sliding assembly comprises a second sliding rail (18) and a second sliding block (22), the second sliding rail (18) is symmetrically arranged on the cross beam (16) up and down, and the second sliding rail (18) is in sliding connection with the second sliding block (22).

7. The novel balloon forming device according to claim 1, characterized in that a first sliding groove (13) is formed in the first moving seat (20), a third sliding block (14) matched with the first sliding groove (13) is arranged on the cavity (11), and the third sliding block (14) is in sliding connection with the first sliding groove (13).