CN118122575A - Equipment and method for producing medical PI catheter by using vertical coating method - Google Patents
Equipment and method for producing medical PI catheter by using vertical coating method Download PDFInfo
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- CN118122575A CN118122575A CN202410546429.4A CN202410546429A CN118122575A CN 118122575 A CN118122575 A CN 118122575A CN 202410546429 A CN202410546429 A CN 202410546429A CN 118122575 A CN118122575 A CN 118122575A
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- 238000000576 coating method Methods 0.000 title claims abstract description 136
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 239000011248 coating agent Substances 0.000 claims abstract description 113
- 238000004033 diameter control Methods 0.000 claims abstract description 81
- 239000000839 emulsion Substances 0.000 claims abstract description 34
- 238000004804 winding Methods 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 238000000465 moulding Methods 0.000 claims abstract description 8
- 238000011282 treatment Methods 0.000 claims description 39
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 16
- 230000003197 catalytic effect Effects 0.000 claims description 15
- 239000002912 waste gas Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 description 13
- 239000000047 product Substances 0.000 description 7
- 238000012360 testing method Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000007493 shaping process Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000011265 semifinished product Substances 0.000 description 3
- 239000012459 cleaning agent Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000010241 blood sampling Methods 0.000 description 1
- 238000000861 blow drying Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention discloses a device and a method for producing a medical PI catheter by using a vertical coating method, wherein the device comprises the following components: the mandrel unreeling tensioning mechanism is used for unreeling the mandrel and tensioning the moving mandrel; the vertical coating diameter control device is of a vertical structure and is used for uniformly coating PI emulsion on a mandrel and controlling the outer diameter after coating, and comprises a coating diameter control die with a die hole, wherein the mandrel passes through the die hole of the coating diameter control die; the vertical curing device is used for carrying out high-temperature curing molding on the PI emulsion coated on the mandrel; and the winding mechanism is used for winding the mandrel formed with the PI pipe layer. The invention can accurately control the pipe diameter of the catheter, improve the uniformity of the wall thickness of the catheter and the concentricity of the catheter, has higher production efficiency, and can obtain medical PI catheters with various required sizes, precise and uniform wall thickness and higher strength and concentricity.
Description
Technical Field
The invention relates to the technical field of medical catheter production, in particular to equipment and a method for producing a medical PI catheter by using a vertical coating method.
Background
Medical catheters are a general term for lumen products that communicate the inside and outside of a human body, and are widely used as passages in drainage, perfusion, administration, blood sampling, blood transfer, detection of biological conditions by sensing elements, auxiliary introduction of other medical instruments, and the like. PI medical grade catheters are a high quality catheter product that is widely used in the medical industry.
The existing production method of the medical catheter generally adopts extrusion molding equipment and extrusion molding technology, for example, chinese patent CN215661719U discloses a medical catheter production line, which comprises a controller, an extruder, a die, a vacuum shaping cooling water tank, a diameter measuring instrument, a tractor and a winding machine which are sequentially arranged from front to back, and the production process is as follows: the materials enter an extruder for plasticizing and extruding, the materials are extruded and molded into medical guide pipes through a die, the medical guide pipes enter a vacuum shaping cooling water tank for sizing and cooling shaping, the medical guide pipes are pulled out of the vacuum shaping cooling water tank and then enter a diameter measuring instrument for diameter measurement, and then are pulled by a tractor, and the medical guide pipes which are pulled out of the tractor enter a winding machine for winding. The existing extrusion molding process can not accurately control the pipe diameter in the production process, the wall thickness of the formed conduit is not uniform enough, and the concentricity of the product can not meet high requirements.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide equipment and a method for producing a medical PI catheter by using a vertical coating method, which can accurately control the diameter of the catheter, improve the uniformity of the wall thickness of the catheter and the concentricity of the catheter, have higher production efficiency, and can obtain medical PI catheters with various required sizes, precise and uniform wall thickness and higher strength and concentricity.
In order to achieve the technical purpose and the technical effect, the invention is realized by the following technical scheme:
An apparatus for producing a medical PI catheter using a vertical coating process, comprising:
the mandrel unreeling tensioning mechanism is used for unreeling the mandrel and tensioning the moving mandrel;
The vertical coating diameter control device is of a vertical structure and is used for uniformly coating PI emulsion on a mandrel and controlling the outer diameter after coating, and comprises a coating diameter control die with a die hole, wherein the mandrel moves in the vertical direction and passes through the die hole of the coating diameter control die; the coating diameter control die is a movable part, and can move to a certain position along with the mandrel after the PI emulsion is fed to the mandrel; in the vertical coating diameter control device, a plurality of coating diameter control molds are arranged, the coating diameter control molds are sequentially arranged in the horizontal direction, and a mandrel passes through the coating diameter control molds sequentially arranged in a winding manner and is subjected to multiple coating diameter control treatments;
the vertical curing device is used for carrying out high-temperature curing molding on the PI emulsion coated on the mandrel;
And the winding mechanism is used for winding the mandrel formed with the PI pipe layer.
Further, the mandrel unreeling tensioning mechanism comprises a coiling tray and a unreeling tensioning assembly, wherein a mandrel is coiled on the coiling tray, and the unreeling tensioning assembly is used for tensioning the mandrel released by the coiling tray;
Still further, blowing tensioning assembly includes a plurality of blowing take-up pulleys, the coil tray rotates by motor drive, and the dabber that the coil tray was released is walked around these a plurality of blowing take-up pulleys in proper order and is strained.
Further, the device also comprises an ultrasonic cleaning device and a catalytic treatment device; the ultrasonic cleaning device is used for carrying out ultrasonic cleaning on the mandrel before the mandrel is coated or the mandrel formed with the PI pipe layer, and the catalytic treatment device is used for carrying out catalytic treatment on waste gas generated in the high-temperature curing treatment process.
Further, the device also comprises a guide wheel set, and the mandrel can move in the vertical direction under the guide action of the guide wheel set.
Still further, vertical coating diameter control device still includes deflector and comb plate, be equipped with the guide way on the deflector, be equipped with the comb groove on the comb plate, the coating diameter control mould sets up between deflector and comb plate, and the dabber of vertical direction motion passes the guide way of deflector, coating diameter control mould's nib, comb groove of comb plate in proper order.
Further, PI emulsion is fed onto the mandrel portion below the coating diameter control die.
Further, the aperture of the die holes of the plurality of coating diameter control dies are sequentially increased; and the mandrel coated with the PI emulsion passes through the next adjacent coating diameter control die after passing through the vertical curing device, and is subjected to PI emulsion coating diameter control treatment again.
The invention also provides a method for producing a medical PI catheter by a vertical coating method, which is carried out by using the equipment, and comprises the following steps:
S1, a mandrel unreeling tensioning mechanism unreels a mandrel and tensions the moving mandrel;
s2, enabling the mandrel to enter the vertical coating diameter control device, enabling the mandrel to move in the vertical direction, enabling the mandrel to pass through a die hole of a coating diameter control die, enabling PI emulsion to be fed below the coating diameter control die, and enabling the coating diameter control die to uniformly coat the PI emulsion and control the coating thickness in the process of moving the mandrel;
S3, the mandrel coated with the PI emulsion enters a vertical curing device and is subjected to high-temperature curing molding treatment;
S4, winding the mandrel with the PI pipe layer by a winding mechanism.
Furthermore, in the method, the mandrel is cleaned by ultrasonic waves before entering the vertical coating diameter control device and before rolling, and the waste gas generated in the high-temperature curing and forming process is subjected to catalytic treatment by the catalytic treatment device.
Further, in the method, the mandrel is subjected to multiple coating diameter control treatments of multiple coating diameter control dies and multiple curing treatments of a vertical curing device, so that the PI pipe layer with the required outer diameter is obtained.
The beneficial effects of the invention are as follows:
The invention creatively designs equipment and a method for producing a medical PI catheter by using a vertical coating method, which combine vertical coating and curing molding to produce the PI catheter.
According to the invention, a vertical coating diameter control die is adopted in the vertical coating process, PI emulsion is uniformly coated on a mandrel passing through a die hole, the outer diameter after coating is controlled, and a plurality of coating diameter control dies are designed, so that the PI emulsion can be uniformly coated and the diameter is controlled gradually for a plurality of times, the pipe diameter of a pipe can be controlled more accurately, and the uniformity of the wall thickness of the pipe is greatly improved; in the invention, the mandrel moves in the vertical direction, passes through the coating diameter control die and is coated with PI emulsion, so that compared with a horizontal production process, the problem of concentricity deviation can be avoided, the concentricity of a catheter product is improved, and the product quality is improved.
The equipment and the method have higher production efficiency, and can obtain medical PI catheters with various required sizes, precise and uniform wall thickness and higher strength.
Drawings
Fig. 1 is a schematic view of an apparatus for producing a medical PI catheter using a vertical coating method according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of another view of an apparatus for producing a medical PI catheter using a vertical coating method according to an embodiment of the invention.
FIG. 3 is a schematic view of the structure of the vertical coating diameter control device in an embodiment of the invention.
FIG. 4 is a schematic view of another view at a vertical coating control device in an embodiment of the invention.
FIG. 5 is a schematic view of a part of an enlarged structure of a vertical coating diameter control device in an embodiment of the invention.
FIG. 6 is a schematic diagram of a configuration of a coating diameter control die mated with a mandrel in an embodiment of the invention.
In the figure, 1: dabber unreels tensioning mechanism, 11: coil tray, 12: discharging tensioning wheel, 13: winding and unwinding a clothes closet; 2: ultrasonic cleaning device, 21: front wash line, 22: a post-cleaning line; 3: vertical coating control diameter device, 31: vertical frame, 32: deflector, 321: guide groove, 33: comb plate, 331: comb grooves, 34: coating a diameter control die; 4: a vertical curing device; 5: a catalytic treatment device; 6: winding mechanism, 61: winding tensioning wheel, 62: reel, 63: a wire diameter testing device; 71: upper guide wheel, 72: lower active guiding wheel, 73: lower driven guide wheel, 74: guide plate, 75: an upper guide wheel frame; 8: a mandrel; 9: an electric cabinet.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
A preferred embodiment of an apparatus for producing medical PI catheters using a vertical coating process as shown in fig. 1 to 6 comprises a mandrel unwind tensioning mechanism 1, an ultrasonic cleaning device 2, a vertical coating diameter control device 3, a vertical curing device 4, a catalytic treatment device 5 and a winding mechanism 6.
Specifically, the mandrel unreeling tensioning mechanism 1 comprises a coiling tray 11 and a unreeling tensioning assembly, wherein the coiling tray 11 and the unreeling tensioning assembly are installed on a coiling cabinet 13, a mandrel 8 is coiled on the coiling tray 11, and the unreeling tensioning assembly is used for tensioning the mandrel 8 released by the coiling tray 11; in this embodiment, the discharge tensioning assembly includes a plurality of discharge tensioning wheels 12; the coil stock tray 11 is driven to rotate by a motor arranged in the winding and unwinding clothes closet 13, and the mandrel 8 discharged by the coil stock tray 11 sequentially bypasses the plurality of discharging tensioning wheels 12 to be tensioned. The mandrel 8 tensioned by the discharging tensioning assembly moves in the horizontal direction.
In this embodiment, the ultrasonic cleaning device 2 is disposed at the rear of the winding and unwinding clothes closet 13, the ultrasonic cleaning device 2 includes two cleaning lines disposed in parallel, which are a front cleaning line 21 and a rear cleaning line 22, each cleaning line includes an ultrasonic generator, a cleaning agent cleaning area, a pure water cleaning area and a blow-drying area, and ultrasonic generated by the ultrasonic generator propagates to the cleaning agent cleaning area and the pure water cleaning area to realize ultrasonic cleaning. The ultrasonic cleaning device is a conventional device, and the specific structure thereof is not described here.
The mandrel 8 tensioned by the discharging tensioning assembly horizontally enters a front cleaning line of the ultrasonic cleaning device 2, and impurities on the surface of the mandrel, which are easy to influence the coating effect, are removed through ultrasonic cleaning.
The apparatus also includes a guide wheel set comprising an upper guide wheel 71, a lower driving guide wheel 72 and a lower driven guide wheel 73; the vertical coating diameter control device 3 is arranged in a vertical frame 31; the lower driving guide wheel 72 and the lower driven guide wheel 73 are mounted on the vertical frame 31; a plurality of guide plates 74 are also mounted on the vertical frame 31; the vertical curing device 4 is disposed above the vertical frame 31, and the upper guide wheel 71 is mounted on an upper guide wheel frame 75 located above the vertical curing device 4. In this embodiment, two lower driven guide wheels 73 are provided, and are respectively located above and above the front and rear of the lower driving guide wheel 72, and the lower driving guide wheel 72 is driven by a motor.
The spindle 8 after ultrasonic cleaning is guided by the guide disc 74 and then guided by the lower active guide wheel 72 to move in the vertical direction for vertical coating.
The vertical coating diameter control device 3 is of a vertical structure and is used for uniformly coating PI emulsion on the mandrel and controlling the outer diameter after coating. The vertical coating diameter control device 3 comprises a guide plate 32, a comb plate 33 and a coating diameter control die 34, wherein the coating diameter control die 34 is arranged between the guide plate 32 and the comb plate 33, the guide plate 32 is provided with a guide groove 321 extending along the length direction of the guide plate, the comb plate 33 is provided with a plurality of comb grooves 331 arranged along the length direction, the coating diameter control die 34 is provided with a plurality of coating diameter control dies 34 which are sequentially arranged in the horizontal direction (left-right direction), and the aperture of die holes of the coating diameter control dies is sequentially increased. The vertically moving mandrel passes through the guide groove 321 of the guide plate 32, the die hole of the coating diameter control die 34, and the comb groove 331 of the comb plate 33 in this order. The PI emulsion is fed onto the mandrel portion below the coating control diameter die 34. The coating diameter control die 34 is a movable part, and when the coating diameter control die 34 does not work, the coating diameter control die 34 is arranged on the guide plate 32; after the PI emulsion is fed to the mandrel 8, the coating diameter control die 34 can move to the comb plate 33 along with the mandrel 8 and is blocked by the comb plate 33.
The mandrel 8 vertically passes through one coating diameter control die 34 upwards, after being subjected to PI emulsion coating once, enters the vertical curing device 4 to carry out high-temperature curing treatment, then moves downwards through the upper guide wheel 71, passes through the next adjacent coating diameter control die 34 under the guidance of the lower driven guide wheel 73 and the lower driving guide wheel 72, is subjected to PI emulsion coating diameter control treatment once again, and then enters the vertical curing device 4 again through the comb groove 331 corresponding to the comb plate 33 to carry out high-temperature curing treatment once again. In this way, one mandrel 8 is wound through the plurality of coating control dies 34 arranged in this order, and subjected to a plurality of coating control treatments and a plurality of high-temperature curing treatments. Wherein, in order to realize more orderly spindle guidance in the process, a plurality of grooves for the spindle 8 to bypass are arranged on the upper guide wheel 71 and the lower driven guide wheel 73.
The vertical curing device 4 comprises a plurality of curing furnace bodies so as to carry out high-temperature curing molding on the PI emulsion coated on the mandrel 8.
During the high temperature curing process, some exhaust gas is generated. Each curing oven body of the vertical curing device 4 is connected with the catalytic treatment device 5 through a pipeline. Under the action of the fan, the waste gas enters the catalytic treatment device 5, and the catalyst in the catalytic treatment device 5 is used for purifying the waste gas.
The mandrel on which the PI tube layer of the desired tube diameter is formed enters the post-cleaning line 22 of the ultrasonic cleaning device 2 to be subjected to ultrasonic cleaning.
The winding mechanism 6 comprises a winding tensioning wheel 61 and a winding disc 62, and the mandrel with the PI pipe layer formed is wound by the winding mechanism 6. In addition, the winding mechanism is further provided with a wire diameter testing device 63 for testing the outer diameter of the PI pipe layer.
The apparatus also includes an electrical cabinet 9 to control the various mechanisms and devices.
The invention also provides a method for producing a medical PI catheter by a vertical coating method, which is carried out by using the equipment, and comprises the following steps:
the mandrel 8 is discharged from the coil tray 11 in the mandrel unreeling tensioning mechanism 1, and the mandrel 8 sequentially winds the plurality of unreeling tensioning wheels 12 to be tensioned.
The mandrel 8 moves horizontally, enters a front cleaning line of the ultrasonic cleaning device 2, and removes impurities on the mandrel, which affect the coating effect, through ultrasonic cleaning;
the mandrel 8 after ultrasonic cleaning is guided by the guide disc 74 and then guided by the lower driving guide wheel 72, and then moves vertically upwards to sequentially pass through the guide groove 321 of the guide plate 32, the die hole of the coating diameter control die 34 and the corresponding comb groove 331 on the comb plate 33; the PI emulsion is fed onto the mandrel portion below the coating diameter control die 34; the feeding mode can be artificial paint or other modes. During the continuous movement of the mandrel 8, the coating diameter control die 34 moves to the comb plate 33 along with the mandrel 8 to be blocked; and the coating diameter control die 34 uniformly coats the PI emulsion and controls the coating thickness during the continuous movement of the mandrel 8.
The mandrel 8 coated with PI emulsion enters the vertical curing device 4 and is subjected to high-temperature curing forming treatment.
The mandrel 8 vertically passes through one coating diameter control die 34 upwards, after being subjected to PI emulsion coating once, enters the vertical curing device 4 to carry out high-temperature curing treatment, then moves downwards through the upper guide wheel 71, passes through the next adjacent coating diameter control die 34 under the guidance of the lower driven guide wheel 73 and the lower driving guide wheel 72, is subjected to PI emulsion coating diameter control treatment once again, and then enters the vertical curing device 4 again through the comb groove 331 corresponding to the comb plate 33 to carry out high-temperature curing treatment once again. Thus, one mandrel 8 is wound through a plurality of coating diameter control molds 34 which are sequentially arranged, and is subjected to a plurality of coating diameter control treatments and a plurality of high-temperature curing treatments;
The number of the coating diameter control dies can be set according to the requirements, for example, 20, 30 and 40 are set, so that the coating diameter control treatment corresponding to the number of the channels is performed, and the aperture of each die is designed according to the required pipe diameter;
in the process, the feeding operation of the lower mandrel part of each corresponding coating diameter control die is intermittent, a certain amount is fed once, and the materials are fed again after the materials are used up;
In the present invention, the coating diameter control die 34 is movable, has a self-centering function, and can obtain a product with more uniform wall thickness and higher concentricity; the best state is that the coating control diameter die 34 is suspended at a certain position between the guide plate 32 and the comb plate 33 in the whole coating process, so that the obtained product has better quality.
The mandrel with the PI pipe layer formed thereon moves horizontally after being guided by the guide disc 74, enters a post-cleaning line of the ultrasonic cleaning device 2, and is subjected to ultrasonic cleaning.
The mandrel with the PI pipe layer formed after ultrasonic cleaning is a PI pipe semi-finished product, and is coiled by a coiling mechanism 6; during winding, the wire diameter testing device 63 tests the pipe diameter of the PI pipe layer.
The core pulling equipment is utilized to draw out the mandrel (two ends of the PI catheter semi-finished product are clamped, and the mandrel is pulled out by the electric cylinder), so that the medical PI catheter can be obtained. During core pulling, the PI catheter semi-finished product can be cut into shorter lengths, and then core pulling shaft operation is performed.
It should be noted that the mandrel 8 in the present invention is generally made of stainless steel wire.
During production, the aperture of the die hole of the coating diameter control die 34 can be designed according to the requirement, so that medical PI catheters with various required sizes, precise and uniform wall thickness and high strength can be obtained. The apparatus and method of the present invention can obtain PI conduits with wall thicknesses on the order of microns.
The invention creatively designs equipment and a method for producing a medical PI catheter by using a vertical coating method, which combine vertical coating and curing molding to produce the PI catheter.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (10)
1. An apparatus for producing medical PI catheters using a vertical coating process, comprising:
the mandrel unreeling tensioning mechanism is used for unreeling the mandrel and tensioning the moving mandrel;
The vertical coating diameter control device is of a vertical structure and is used for uniformly coating PI emulsion on a mandrel and controlling the outer diameter after coating, and comprises a coating diameter control die with a die hole, wherein the mandrel moves in the vertical direction and passes through the die hole of the coating diameter control die; the coating diameter control die is a movable part, and can move to a certain position along with the mandrel after the PI emulsion is fed to the mandrel; in the vertical coating diameter control device, a plurality of coating diameter control molds are arranged, the coating diameter control molds are sequentially arranged in the horizontal direction, and a mandrel passes through the coating diameter control molds sequentially arranged in a winding manner and is subjected to multiple coating diameter control treatments;
the vertical curing device is used for carrying out high-temperature curing molding on the PI emulsion coated on the mandrel;
And the winding mechanism is used for winding the mandrel formed with the PI pipe layer.
2. An apparatus for producing medical PI catheters using a vertical coating process according to claim 1 comprising a coil tray having a mandrel wound thereon and a discharge tensioning assembly tensioning the mandrel discharged from the coil tray.
3. The apparatus for producing a medical PI catheter using a vertical coating process according to claim 1, further comprising an ultrasonic cleaning device and a catalytic treatment device; the ultrasonic cleaning device is used for carrying out ultrasonic cleaning on a mandrel before coating or a mandrel formed with a PI pipe layer, and the catalytic treatment device is used for carrying out catalytic treatment on waste gas generated in the high-temperature curing treatment process.
4. The apparatus for producing medical PI catheters using the vertical coating process according to claim 1, further comprising a guide wheel set, wherein the mandrel is vertically movable under the guiding action of the guide wheel set.
5. The apparatus for producing a medical PI-catheter according to claim 1, wherein the vertical coating control device further comprises a guide plate and a comb plate, the guide plate is provided with a guide groove, the comb plate is provided with a comb groove, the coating control die is disposed between the guide plate and the comb plate, and the mandrel moving in the vertical direction sequentially passes through the guide groove of the guide plate, the die hole of the coating control die, and the comb groove of the comb plate.
6. An apparatus for producing medical PI catheters using a vertical coating process according to claim 1 or 5 wherein PI emulsion is fed onto the mandrel portion below the coating control diameter die.
7. The apparatus for producing a medical PI catheter using a vertical coating process according to claim 1 or 5, wherein the aperture of the die holes of the plurality of coating diameter control dies increases in sequence; and the mandrel coated with the PI emulsion passes through the next adjacent coating diameter control die after passing through the vertical curing device, and is subjected to PI emulsion coating diameter control treatment again.
8. A method for producing a medical PI catheter by means of a vertical coating process, characterized in that it is carried out with the apparatus according to any one of claims 1 to 7, comprising the steps of:
S1, a mandrel unreeling tensioning mechanism unreels a mandrel and tensions the moving mandrel;
s2, enabling the mandrel to enter the vertical coating diameter control device, enabling the mandrel to move in the vertical direction, enabling the mandrel to pass through a die hole of a coating diameter control die, enabling PI emulsion to be fed below the coating diameter control die, and enabling the coating diameter control die to uniformly coat the PI emulsion and control the coating thickness in the process of moving the mandrel;
S3, the mandrel coated with the PI emulsion enters a vertical curing device and is subjected to high-temperature curing molding treatment;
S4, winding the mandrel with the PI pipe layer by a winding mechanism.
9. The method for producing a medical PI catheter according to claim 8, wherein the mandrel is subjected to ultrasonic cleaning before entering the vertical coating diameter control device and before being wound, and the exhaust gas generated in the high-temperature curing and forming process is subjected to catalytic treatment by the catalytic treatment device.
10. The method of producing a medical PI catheter using a vertical coating process according to claim 8, wherein the mandrel is subjected to multiple coating control treatments of a multiple coating control die and multiple curing treatments of a vertical curing device to obtain PI tube layers of a desired outer diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410546429.4A CN118122575A (en) | 2024-05-06 | 2024-05-06 | Equipment and method for producing medical PI catheter by using vertical coating method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410546429.4A CN118122575A (en) | 2024-05-06 | 2024-05-06 | Equipment and method for producing medical PI catheter by using vertical coating method |
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| CN118122575A true CN118122575A (en) | 2024-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410546429.4A Pending CN118122575A (en) | 2024-05-06 | 2024-05-06 | Equipment and method for producing medical PI catheter by using vertical coating method |
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| CN (1) | CN118122575A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0542552A (en) * | 1991-08-16 | 1993-02-23 | Nippon Zeon Co Ltd | Manufacture of medical tube |
| CN106423719A (en) * | 2016-09-29 | 2017-02-22 | 成都德信安创新医疗技术有限公司 | Automatic coating device and coating method of surface coatings of medical catheter |
| CN207839307U (en) * | 2017-12-29 | 2018-09-11 | 科睿驰（深圳）医疗科技发展有限公司 | A kind of automation conduit coating equipment of view-based access control model processing |
| CN112844949A (en) * | 2020-12-31 | 2021-05-28 | 上海爱声生物医疗科技有限公司 | Medical catheter coating equipment |
| CN114425844A (en) * | 2022-04-06 | 2022-05-03 | 南昌大学 | Medical antibacterial plastic catheter extrusion molding equipment and method |
| CN117051600A (en) * | 2023-08-07 | 2023-11-14 | 上海励楷科技有限公司 | Medical catheter processing method |
-
2024
- 2024-05-06 CN CN202410546429.4A patent/CN118122575A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0542552A (en) * | 1991-08-16 | 1993-02-23 | Nippon Zeon Co Ltd | Manufacture of medical tube |
| CN106423719A (en) * | 2016-09-29 | 2017-02-22 | 成都德信安创新医疗技术有限公司 | Automatic coating device and coating method of surface coatings of medical catheter |
| CN207839307U (en) * | 2017-12-29 | 2018-09-11 | 科睿驰（深圳）医疗科技发展有限公司 | A kind of automation conduit coating equipment of view-based access control model processing |
| CN112844949A (en) * | 2020-12-31 | 2021-05-28 | 上海爱声生物医疗科技有限公司 | Medical catheter coating equipment |
| CN114425844A (en) * | 2022-04-06 | 2022-05-03 | 南昌大学 | Medical antibacterial plastic catheter extrusion molding equipment and method |
| CN117051600A (en) * | 2023-08-07 | 2023-11-14 | 上海励楷科技有限公司 | Medical catheter processing method |
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