Balloon stretching forming equipment and stretching forming method

Abstract

The invention discloses balloon stretching forming equipment and a stretching forming method.The stretching forming equipment comprises a supporting rack, an automatic feeding mechanism and an automatic discharging mechanism are installed on the top of the supporting rack, and a workbench is arranged in the supporting rack; a plurality of groups of pre-stretching mechanisms, cutting and length taking mechanisms, an automatic feeding mechanism and a stamping and sealing mechanism are arranged on the workbench; the stretching forming method comprises the steps that all the sliding table modules and the driving cylinders are reset, and machining parameters and a machining sequence are set; and taking out the single material tube in the material placing box, heating, synchronously pre-stretching the material tube, cutting into a set length, finishing feeding, heating, and filling nitrogen to finish balloon forming production and processing. According to the invention, the whole process is completed by monitoring full-automatic continuous production through the PLC control system and the corresponding sensors, multiple sets of product parameters can be stored and processed, manual feeding and discharging and inflation pressurization treatment are not needed, the processing time is effectively shortened, and the processing efficiency and the yield are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical processing equipment, and in particular to a balloon stretching molding device and a stretching molding method. Background Art

[0002] With the continuous development of medical technology, medical catheters play an increasingly critical role in clinical treatment and have become an indispensable tool in many treatment methods. Especially in the field of cardiovascular disease treatment, balloon catheters, as an important medical device, are widely used in the treatment of cardiovascular problems such as coronary artery lesions and vascular stenosis. Therefore, in the design and production process of balloon catheters, it is necessary to ensure that they have extremely high processing accuracy to ensure safety and efficacy during use.

[0003] At present, in the production process of balloon catheters, the automation level of the molding machine is still low, and most of the equipment still adopts a semi-automatic production method. In this mode, each process is carried out separately, and each link requires a large amount of manual participation in the operation. Due to the dispersion of operations and manual intervention, the production efficiency is low, the product quality consistency is poor, and the yield rate is low, which is difficult to meet the needs of large-scale production. In order to solve this problem, some equipment manufacturers will use the mold split method to make balloons, which has indeed improved production efficiency to a certain extent and achieved partial automation. However, the mold split processing technology still has obvious defects, especially in the joint problem of the parting line: because the mold needs to be re-closed after the split, the parting line generated during production will affect the structural stability and sealing of the balloon, and high-demand balloon products such as coronary balloons cannot be met. Balloon production can only rely on manual loading operations, and the degree of automation is low. Summary of the invention

[0004] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a balloon stretching molding device and a stretching molding method.

[0006] In order to achieve the above-mentioned object, in a first aspect, the present invention provides a balloon stretching and forming device, comprising: a support frame, an automatic loading mechanism and an automatic unloading mechanism are installed on the top of the support frame, a workbench is arranged inside the support frame, and a pre-stretching mechanism, a cutting and lengthening mechanism, an automatic feeding mechanism and a stamping and sealing mechanism are arranged on the workbench;

[0007] The automatic feeding mechanism comprises a first linear motor slide module, a first linear screw slide module, a first driving cylinder, a feeding clamp and / or a feeding suction cup, and the automatic feeding mechanism is used to complete the placement and movement of a single pipe material;

[0008] The automatic unloading mechanism is arranged on one side of the automatic loading mechanism, and the automatic unloading mechanism comprises a second linear motor slide module, a second linear screw slide module, a second driving cylinder and an unloading clamp, and the automatic unloading mechanism is used to complete the placement and movement of the balloon product;

[0009] The pre-stretching mechanism includes a third linear motor slide module, a third drive cylinder, a pre-stretching component and a heating component, and the pre-stretching mechanism is used to complete the heating and pre-stretching of the catheter;

[0010] The cutting and lengthening mechanism is arranged on one side of the pre-stretching mechanism, and comprises a cutting assembly and a fourth driving cylinder, and is used for clamping a fixed-length cutting material tube;

[0011] The automatic feeding mechanism is arranged on one side of the cutting and lengthening mechanism, and the automatic feeding mechanism comprises a fourth linear motor slide module, a fourth driving cylinder and a feeding clamp, and the automatic feeding mechanism is used to clamp the material tube for moving and feeding;

[0012] The stamping and sealing mechanism is arranged at one end of the cutting and lengthening mechanism, and the stamping and sealing mechanism includes a fifth linear motor slide module, a fifth driving cylinder, a clamping and stretching assembly, a forming water jacket assembly, a mold assembly and a stamping and sealing assembly. The stamping and sealing mechanism is used to clamp the material tube, stretch, inflate, and hot-press to form a balloon catheter.

[0013] In some embodiments, the support frame includes a side bracket weldment and a top bracket weldment, the top bracket weldment and the side bracket weldment are welded and connected, and the first linear motor slide module and the second linear motor slide module are installed in parallel between the top bracket weldment;

[0014] A first fixing plate is installed on the top bracket weldment through a first support block, and the first linear screw slide module and the second linear screw slide module are installed in parallel at the lower part of the first fixing plate;

[0015] A second fixed plate is installed on the support platform through a second support block, and the third linear motor slide module and the fourth linear motor slide module are installed in parallel on the upper part of the second fixed plate.

[0016] In some embodiments, the first linear motor slide module includes a first slide, the first driving cylinder is detachably connected through a first mounting plate and a first sliding plate at the bottom of the first slide, the first driving cylinder includes multiple groups of loading cylinders, the loading cylinders on both sides are detachably connected through a first connecting plate and a loading clamp, and the loading cylinder in the middle is detachably connected through a first connecting plate and a loading suction cup.

[0017] In some embodiments, the second linear motor slide module includes a second slide, the second drive cylinder is detachably connected through a second mounting plate and a second sliding plate at the bottom of the second slide, and the second drive cylinder includes multiple groups of unloading cylinders, and the unloading cylinders are detachably connected through a second connecting plate and a unloading clamp.

[0018] In some embodiments, the third linear motor slide module includes a third slide, the third drive cylinder is detachably connected to the third slide plate on the top of the third slide through a third mounting plate, a position sensor is provided on one side of the third slide, a floating seat is provided between the third mounting plate and the third drive cylinder, and a tension sensor is provided inside the floating seat;

[0019] The third driving cylinder includes a plurality of groups of pre-stretching cylinders and heating cylinders, the pre-stretching cylinders and the pre-stretching assembly are detachably connected, the pre-stretching assembly includes a pre-stretching chuck, the heating cylinder and the heating assembly are detachably connected, and the heating assembly includes a heating plate;

[0020] A plurality of groups of heating plates are arranged between the pre-stretching clamps, a gear rack sliding module is arranged below the heating cylinder, and the heating cylinder is detachably connected with the gear rack transmission module through a sliding seat.

[0021] In some embodiments, the second driving cylinder is detachably connected to the cutting fixing plate and the cutting support plate, the second driving cylinder includes a cutting cylinder and a lifting cylinder, the cutting assembly includes a cutting jaw and a cutting blade, the cutting jaw is detachably connected to the cutting fixing plate and the cutting cylinder, and the cutting blade is detachably connected to the blade holder and the lifting cylinder.

[0022] In some embodiments, a material box mechanism is arranged between the cutting and lengthening mechanism and the automatic feeding mechanism, and the material box mechanism includes a support frame, a placement plate is installed on the upper part of the support frame, a material discharge box is installed on the upper part of the placement plate, the material discharge box is provided with a material discharge area, and waste areas are arranged at both ends of the material discharge area.

[0023] In some embodiments, the fourth linear motor slide module includes a fourth slide, the fourth drive cylinder is detachably connected to the fourth sliding plate on the top of the fourth slide through a fourth mounting plate, and the fourth drive cylinder includes multiple groups of feed cylinders, and the feed cylinders are detachably connected to the fourth connecting plate and the feed clamp.

[0024] In some embodiments, the fifth linear motor slide module includes a fifth slide, and the fifth drive cylinder is detachably connected to a fifth sliding plate on the top of the fifth slide via a fifth mounting plate;

[0025] The fifth driving cylinder comprises a re-stretching cylinder, a sliding cylinder and a pressing oil cylinder, wherein the re-stretching cylinder is detachably connected to the clamping and stretching assembly through a fifth connecting plate, the sliding cylinder is detachably connected to the mold assembly through a fifth connecting plate, and the pressing oil cylinder is detachably connected to the stamping and sealing assembly through a fifth connecting plate;

[0026] The clamping and stretching assembly includes a re-stretching chuck, which is detachably connected to the output end of the re-stretching cylinder. The molding water jacket assembly includes an outer shell, and a heating chamber is arranged inside the outer shell. The mold assembly includes a distal mold and a proximal mold, and the distal mold and the proximal mold are arranged at both ends of the molding water jacket assembly. The stamping sealing assembly includes a sealing chuck, and the sealing chuck is detachably connected to the output end of the clamping cylinder.

[0027] In a second aspect, the present invention further provides a balloon stretching method, which is performed by the balloon stretching device as described in the first aspect, and the stretching method comprises:

[0028] Reset all slide modules and drive cylinders, set processing parameters and processing sequence;

[0029] The feeding cylinder drives the feeding claw and / or the feeding suction cup to take out the single material tube in the discharge box, and the pre-stretching cylinder drives the pre-stretching chuck to clamp the two ends of the material tube, and the material tube is pre-stretched synchronously after being heated by the heating plate;

[0030] The feeding cylinder drives the feeding clamp and / or the feeding suction cup to take out the pre-stretched material tube, the cutting cylinder drives the cutting clamp to clamp and fix the material tube, and the lifting cylinder drives the cutting blade to cut the material tube to the set length;

[0031] The feeding cylinder drives the feeding claws at the feeding end and the middle to grab the cut material tube and move synchronously, driving the material tube to pass through the forming water jacket assembly to complete the feeding of the straight section mold in the water jacket;

[0032] The feeding cylinder drives the feeding jaws at the discharge end to clamp the end of the material pipe passing through the molding water jacket assembly and the feeding jaws at the feed end to run synchronously to send the material pipe out a fixed distance, release and retreat to the clamping position, and the feeding jaws clamp the material pipe again and send it forward a fixed distance, repeat the above actions until the material pipe passes through the interior of the proximal mold and enters the sealing chuck, completing the feeding of the proximal mold, the clamping cylinder drives the sealing chuck to lock, and the feeding cylinder drives the middle feeding jaws to withdraw and move to the initial position;

[0033] The feeding cylinder drives the feeding jaws, the remote die and the stretching chuck at the feeding end to move synchronously, and in the same way, the other end of the material tube is passed through the remote die and fed into the re-stretching chuck. The sliding cylinder drives the sealing chuck to clamp and fix, thus completing the feeding of the remote die.

[0034] The distal mold, proximal mold and molding water jacket assembly are closed, the balloon bubble position is adjusted to be centered, and the balloon is heated and filled with nitrogen to complete the balloon molding production process.

[0035] The present invention has the following beneficial effects:

[0036] 1. The present invention uses a loading mechanism and a unloading mechanism on the top of the support frame to clamp the material tube for loading and unloading. Multiple groups of parallel pre-stretching mechanisms, cutting and lengthening mechanisms, automatic feeding mechanisms and stamping and sealing mechanisms form a multi-station balloon production station. The pre-stretching mechanism heats and pre-stretches the material tube, the cutting and lengthening mechanism cuts the material tube to a fixed length, the automatic feeding mechanism clamps the material tube for moving feeding, and the stamping and sealing mechanism clamps the material tube and then stretches, inflates and hot presses it. The whole process is completed by full-automatic continuous production through PLC control system and corresponding sensor monitoring, and multiple sets of product parameters can be stored and processed, without manual loading and unloading and inflation and pressurization processing, which effectively shortens the processing time and improves the processing efficiency and yield rate;

[0037] 2. The present invention, the feeding mechanism includes a first linear motor slide module and a first linear screw slide module, the unloading mechanism includes a second linear motor slide module and a second linear screw slide module, the pre-stretching mechanism includes a third linear motor slide module, a third driving cylinder, a pre-stretching component and a heating component, the cutting and lengthening mechanism includes a cutting clamp and a cutting blade installed on the third driving cylinder, the automatic feeding mechanism includes a plurality of feeding clamps installed on the fourth driving cylinder and a matching fourth linear motor slide module, the stamping and sealing mechanism includes a clamping and stretching component installed on the fifth driving cylinder, a forming water jacket component, a mold component and a stamping and sealing component and a matching fifth linear motor The machine slide module can automatically complete various process steps such as pre-stretching of the material tube, cutting of the material tube, passing the material tube through the straight section of the mold, feeding into the proximal mold, feeding into the distal mold, re-stretching of the material tube and hot pressing and sealing: the loading clamp moves to load the material, which is heated and pre-stretched by the heating plate and the pre-stretching clamp, and then the cutting length is determined by the cutting clamp and then cut by the cutting blade, the feeding clamp clamps the material tube and moves, one end of the material tube is fed into the proximal mold and clamped and fixed by the sealing clamp, the other end of the material tube is fed into the distal mold and clamped and fixed by the stretching clamp, then the material tube and the molding water jacket assembly are closed, the length is adjusted by clamping and stretching the assembly, and the balloon is pressurized by the sealing clamp after heating. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The structure diagram of the balloon stretching and forming device proposed by the present invention is shown in FIG. Figure 1 ;

[0039] Figure 2 The structure diagram of the balloon stretching and forming device proposed by the present invention is shown in FIG. Figure 2 ;

[0040] Figure 3 This is a schematic diagram of the structure of the support frame in the balloon stretching and forming equipment proposed by the present invention;

[0041] Figure 4 This is a schematic diagram of the structure of the automatic feeding mechanism in the balloon stretching and forming equipment proposed by the present invention;

[0042] Figure 5 This is a schematic structural diagram of the automatic unloading mechanism in the balloon stretching and forming equipment proposed by the present invention;

[0043] Figure 6 It is a structural schematic diagram of the pre-stretching mechanism in the balloon stretching and forming equipment proposed by the present invention;

[0044] Figure 7 It is a structural schematic diagram of the cutting and lengthening mechanism in the balloon stretching and forming equipment proposed by the present invention;

[0045] Figure 8 This is a schematic structural diagram of the automatic feeding mechanism in the balloon stretching and forming equipment proposed by the present invention;

[0046] Fig. 9 It is a structural schematic diagram of the stamping and sealing mechanism in the balloon stretching and forming equipment proposed by the present invention;

[0047] Fig.10 This is a schematic structural diagram of the material box mechanism in the balloon stretching and forming equipment proposed in the present invention.

[0048] Legend:

[0049] 1. Support frame; 11. Workbench; 12. Side bracket weldment; 13. Top bracket weldment; 14. First support block; 15. First fixed plate; 16. Second support block; 17. Second fixed plate; 2. Automatic feeding mechanism; 21. First linear motor slide module; 211. First slide; 212. First mounting plate; 213. First sliding plate; 214. First connecting plate; 22. First linear screw slide module; 23. First drive cylinder; 231. Feeding cylinder; 24. Feeding jaws; 25. Feeding suction cup; 3. Automatic unloading mechanism; 31. Second linear motor slide module; 311. Second slide; 312, second mounting plate; 313, second sliding plate; 314, second connecting plate; 32, second linear screw slide module; 33, second driving cylinder; 331, unloading cylinder; 34, unloading clamp; 4, pre-stretching mechanism; 41, third linear motor slide module; 411, third slide; 412, third mounting plate; 413, third sliding plate; 414, position sensor; 415, floating seat; 416, tension sensor; 42, third driving cylinder; 421, pre-stretching cylinder; 422, heating cylinder; 43, pre-stretching assembly; 431, pre-stretching chuck; 44, heating assembly; 441, heating plate; 45. Gear rack sliding module; 451. Sliding seat; 5. Cutting length mechanism; 51. Cutting assembly; 511. Cutting fixing plate; 512. Cutting support plate; 513. Cutting clamp; 514. Cutting blade; 515. Blade bracket; 52. Cutting drive cylinder; 521. Cutting cylinder; 522. Lifting cylinder; 6. Automatic feeding mechanism; 61. Fourth linear motor slide module; 611. Fourth slide; 612. Fourth mounting plate; 613. Fourth sliding plate; 614. Fourth connecting plate; 62. Fourth drive cylinder; 621. Feed cylinder; 63. Feed clamp; 7. Stamping sealing mechanism; 71. Five linear motor slide modules; 711, the fifth slide; 712, the fifth mounting plate; 713, the fifth sliding plate; 714, the fifth connecting plate; 72, the fifth driving cylinder; 721, the re-stretching cylinder; 722, the sliding cylinder; 723, the clamping cylinder; 73, the clamping and stretching assembly; 731, the re-stretching chuck; 74, the molding water jacket assembly; 741, the outer shell; 75, the mold assembly; 751, the distal mold; 752, the proximal mold; 76, the stamping seal assembly; 761, the sealing chuck; 8, the material box mechanism; 81, the support frame; 82, the placement plate; 83, the material discharge box; 831, the material discharge area; 832, the waste area. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] The embodiment of the present application provides a balloon stretching forming device and stretching forming method, which solves the problems of low automation level of the forming machine in the prior art, requiring a large amount of manual participation in operation, low production efficiency, poor product consistency, and low yield rate. The present application uses the loading and unloading mechanism on the top of the support frame to clamp the material tube for loading and unloading, and multiple groups of parallel pre-stretching mechanisms, cutting and lengthening mechanisms, automatic feeding mechanisms and stamping and sealing mechanisms form a multi-station balloon production station, and the material tube is heated and pre-stretched by the pre-stretching mechanism, the material tube is cut to a fixed length by the cutting and lengthening mechanism, the material tube is clamped by the automatic feeding mechanism for motion feeding, and the material tube is clamped by the stamping and sealing mechanism and then stretched, inflated and hot-pressed. The whole process is completed by fully automatic continuous production through the PLC control system and the corresponding sensor monitoring, and multiple sets of product parameters can be stored and processed, without manual loading and unloading and inflation and pressurization processing, which effectively shortens the processing time and improves the processing efficiency and yield rate.

[0052] Please refer to the following examples for details:

[0053] Reference Figure 1-Figure 10 The present invention provides an embodiment of a balloon stretching and forming device, the specific structure of which includes: a support frame (1), an automatic loading mechanism (2) and an automatic unloading mechanism (3) are installed on the top of the support frame (1), a workbench (11) is arranged inside the support frame (1), and multiple groups of pre-stretching mechanisms (4), cutting and lengthening mechanisms (5), automatic feeding mechanisms (6) and stamping and sealing mechanisms (7) are arranged in parallel on the workbench (11), forming a multi-station balloon production station.

[0054] The automatic feeding mechanism (2) is composed of a first linear motor slide module (21), a first linear screw slide module (22), a first driving cylinder (23), a feeding clamp (24) and / or a feeding suction cup (25) and other components, and is used to accurately pick up, place and move a single pipe material to ensure the continuity and smoothness of the production line; similarly, the automatic unloading mechanism (3) is installed on one side of the automatic feeding mechanism (2), and the unloading mechanism includes a second linear motor slide module (31), a second linear screw slide module (32), The second driving cylinder (33) and the unloading clamp (34) are used to pick up, place and move the finished balloon catheter product, and accurately deliver the finished product to the designated position; the automatic loading mechanism (2) and the automatic unloading mechanism (3) can automatically complete the directional movement of the tube material, and can fully automatically complete the various process steps such as pre-stretching of the tube, cutting of the tube, passing the tube through the straight section of the mold, feeding into the proximal mold (752), feeding into the distal mold (751), re-stretching of the tube and hot pressing sealing, thereby effectively reducing manual intervention and improving production efficiency and safety;

[0055] The pre-stretching mechanism (4) comprises a third linear motor slide module (41), a third drive cylinder (42), a pre-stretching component (43) and a heating component (44), and is capable of accurately heating the balloon vesicle and performing a pre-stretching process;

[0056] The cutting and lengthening mechanism (5) is arranged on one side of the pre-stretching mechanism (4), and is composed of a cutting assembly (51) and a cutting drive cylinder (52), and can accurately clamp the pipe material and perform precise cutting, thereby ensuring that the length of each pipe material meets the production standard;

[0057] The automatic feeding mechanism (6) is arranged on one side of the cutting and lengthening mechanism (5), and comprises a fourth linear motor slide module (61), a fourth driving cylinder (62) and a feeding clamp (63), and can accurately control the conveying and positioning of the pipe material;

[0058] The stamping and sealing mechanism (7) is arranged at one end of the cutting and lengthening mechanism (5), and comprises a fifth linear motor slide module (71), a fifth driving cylinder (72), a clamping and stretching component (73), a forming water jacket component (74), a mold component (75) and a stamping and sealing component (76). By accurately controlling the coordinated work of each component, the stamping and sealing mechanism (7) can complete the sealed hot pressing molding of the balloon catheter in a short time, ensuring that the quality and performance of each balloon meet the standard requirements.

[0059] Specifically, the control and monitoring of the entire production process is completed by the host computer system, PLC control system and supporting sensors. The PLC control system collects data from each module in real time, and ensures the seamless connection and efficient operation of each link through precise logical judgment and automatic adjustment. At the same time, the host computer system can store multiple sets of product parameter settings and flexibly adjust according to the needs of different production batches without manual intervention, ensuring the stability and consistency of the production process. The sensors are responsible for monitoring the operating status and key parameters of each link, and feedback abnormal information in real time, further improving the controllability and safety of the production process. Through this fully automated and continuous production method, the manufacture of balloons not only effectively shortens the processing cycle, but also significantly improves the yield and consistency of products while improving production efficiency.

[0060] Please continue reading Figure 2 and Figure 3 In this embodiment, the support frame (1) includes a side support weldment (12) and a top support weldment (13), and the top support weldment (13) and the side support weldment (12) are welded together to ensure the overall rigidity and structural stability of the frame.

[0061] Among them, the first linear motor slide module (21) and the second linear motor slide module (31) are installed in parallel between the top bracket weldment (13), which can effectively improve the stability and accuracy of the drive system and enable subsequent processing steps to be smoothly executed.

[0062] Furthermore, through the first support block (14), the first fixed plate (15) is firmly mounted on the top bracket weldment (13), so that the first linear screw slide module (22) and the second linear screw slide module (32) can be installed in parallel on the lower part of the first fixed plate (15), ensuring that the two slide modules can move accurately on the same horizontal plane, effectively reducing errors during operation, and providing sufficient supporting force to ensure precise operation; similarly, on the second support block (16), the second fixed plate (17) is firmly mounted on the top bracket weldment (13), and supports the third linear motor slide module (41) and the fourth linear motor slide module (61) through the fixed plate. The two slide modules are also installed in parallel on the upper part of the second fixed plate (17). This structural design not only prevents the work of multiple slide modules from interfering with each other, but also ensures that they can accurately cooperate and collaborate to complete production tasks.

[0063] Please continue reading Figure 2 , Figure 4 and Figure 5In this embodiment, the first linear motor slide module (21) includes a first slide (211), and the first driving cylinder (23) is detachably connected via a first mounting plate (212) and a first sliding plate (213) at the bottom of the first slide (211).

[0064] The first driving cylinder (23) includes a plurality of feeding cylinders (231), and the feeding cylinders (231) on both sides are detachably connected to the feeding clamps (24) through the first connecting plate (214). The feeding cylinders (231) drive the feeding clamps (24) to accurately grasp the material, thereby completing the vertical or horizontal transportation of the material pipe; the middle feeding cylinder (231) is detachably connected to the feeding suction cup (25) through the first connecting plate (214), and the suction force is generated by the externally connected vacuum generator to adsorb the material pipe, thereby completing the vertical or horizontal transportation of the material pipe.

[0065] Similarly, the second linear motor slide module (31) includes a second slide (311), and the second drive cylinder (33) is detachably connected to the second slide plate (313) at the bottom of the second slide (311) via a second mounting plate (312).

[0066] The second driving cylinder (33) includes a plurality of groups of unloading cylinders (331), and the unloading cylinders (331) are detachably connected to the unloading clamps (34) via the second connecting plate (314). The unloading cylinders (331) drive the unloading clamps (34) to accurately grasp the balloon catheter, thereby completing the vertical or horizontal transportation of the balloon tube.

[0067] Please continue reading Figure 2 and Figure 6 In this embodiment, the third linear motor slide module (41) includes a third slide (411), and the third driving cylinder (42) is detachably connected via a third mounting plate (412) and a third sliding plate (413) on the top of the third slide (411).

[0068] Specifically, a position sensor (414) is arranged on one side of the third slide (411), and the position sensor (414) is a grating sensor, and multiple position sensors are arranged. A light shielding sheet is also arranged on one side of the third slide (411), which can locate the position of the pre-stretching component (43). When the pre-stretching component (43) reaches the designated position, the pre-stretching component stops moving, thereby completing the stretching and resetting. A floating seat (415) is arranged between the third mounting plate (412) and the third driving cylinder (42), and a tension sensor (416) is arranged inside the floating seat (415). The two sides of the tension sensor (416) are respectively connected to the third mounting plate (412) and the floating seat (415), so as to monitor the stretching force of the pre-stretching component (43) in real time and prevent the catheter from breaking.

[0069] Furthermore, the third driving cylinder (42) includes a plurality of groups of pre-stretching cylinders (421) and heating cylinders (422), the pre-stretching cylinders (421) and the pre-stretching components (43) are detachably connected, the pre-stretching components (43) include pre-stretching clamps (431) for clamping the two ends of the catheter; the heating cylinder (422) and the heating component (44) are detachably connected, and the heating component (44) includes a heating plate (441) for heating the catheter;

[0070] Specifically, a plurality of groups of heating plates (441) are arranged between the pre-stretching chucks (431), and a gear rack sliding module (45) is arranged below the heating cylinder (422). The heating cylinder (422) is detachably connected to the gear rack transmission module through a sliding seat (451). The spacing between the opposite heating plates (441) can be adjusted by the heating cylinder (422), thereby adjusting the heating temperature. The gear rack sliding module (45) is driven to move by a driving motor arranged at the bottom, thereby adjusting the spacing between adjacent heating plates (441), and adjusting the length of the balloon vesicle by adjusting the heating area. Both sides of the catheter can be heated at the same time. After the heating is completed, both sides are synchronously stretched by the pre-stretching chuck (431). The balloon is subjected to the stretching stress at the same time, thereby ensuring the accuracy of the balloon stretching forming. Only one stretching is required to complete the process, thereby effectively improving the processing efficiency.

[0071] Please continue reading Figure 2 and Figure 7 In this embodiment, the second driving cylinder (33) is detachably connected via a cutting fixing plate (511) and a cutting support plate (512), and the second driving cylinder (33) includes a cutting cylinder (521) and a lifting cylinder (522), and the cutting assembly (51) includes a cutting clamp (513) and a cutting blade (514).

[0072] The cutting clamp (513) is detachably connected to the cutting fixing plate (511) and the cutting cylinder (521), and can be adaptively adjusted according to the shape and size of the material, ensuring that the material can be firmly maintained in the correct position during the entire cutting process, and the clamping force on the material tube can be accurately adjusted; and the cutting blade (514) is detachably connected to the blade support (515) and the lifting cylinder (522), ensuring that the cutting blade (514) can quickly and accurately complete the cutting action, thereby realizing accurate cutting of the material.

[0073] Please continue reading Figure 2 and Figure 8 In this embodiment, the fourth linear motor slide module (61) includes a fourth slide (611), and the fourth drive cylinder (62) is detachably connected via a fourth mounting plate (612) and a fourth sliding plate (613) on the top of the fourth slide (611).

[0074] The fourth driving cylinder (62) includes a plurality of groups of feeding cylinders (621), and the feeding cylinders (621) are detachably connected via a fourth connecting plate (614) and a feeding clamp (63), so that the material tube can be continuously transported to the next process section in steps after being cut to a set length.

[0075] Please continue reading Figure 2 and Fig. 9 In this embodiment, the fifth linear motor slide module (71) includes a fifth slide (711), and the fifth drive cylinder (72) is detachably connected via a fifth mounting plate (712) and a fifth sliding plate (713) on the top of the fifth slide (711).

[0076] The fifth driving cylinder (72) comprises a re-stretching cylinder (721), a sliding cylinder (722) and a clamping oil cylinder (723); the re-stretching cylinder (721) is detachably connected to the clamping and stretching assembly (73) through the fifth connecting plate (714), and is used to clamp and stretch a section of the material pipe fed by the feeding clamp (63) and sent to the far-end mold (751) during processing; the sliding cylinder (722) is detachably connected to the mold assembly (75) through the fifth connecting plate (714), and is used to mold the material pipe entering the molding water jacket assembly (74); the clamping oil cylinder (723) is detachably connected to the stamping seal assembly (76) through the fifth connecting plate (714), and is used to clamp and inflate a section of the material pipe fed by the feeding clamp (63) and sent to the near-end mold (752) during processing;

[0077] Furthermore, the clamping and stretching assembly (73) includes a re-stretching chuck (731), and the re-stretching chuck (731) and the output end of the re-stretching cylinder (721) are detachably connected. The molding water jacket assembly (74) includes a shell (741), and a heating chamber is arranged inside the shell (741) for passing a heated circulating medium to heat the balloon material tube; the mold assembly (75) includes a distal mold (751) and a proximal mold (752), and the distal mold (751) and the proximal mold (752) are arranged at both ends of the molding water jacket assembly (74). During processing, the two sections of the material tube clamped by the feeding clamp (63) will enter the molding water jacket assembly (74) through the proximal mold (752) and the distal mold (751) respectively;

[0078] Furthermore, the stamping seal assembly (76) includes a sealing chuck (761), and the sealing chuck (761) and the output end of the clamping oil cylinder (723) are detachably connected. Specifically, the sealing chuck (761) is a pneumatic three-jaw chuck, and its front end is conical. When the material tube is clamped, the proximal mold (752) is pushed to gradually reduce the distance between it and the sealing chuck (761), and fit with the inner side of the sealing chuck (761) until it is clamped, thereby completing the sealing and fixing of the material tube; the sealing chuck (761) and the re-stretching chuck (731) are coaxially arranged, which can ensure the coaxiality of the re-stretching chuck (731) and the sealing chuck (761), avoid damage during the stretching process and ensure thickness uniformity.

[0079] Please continue reading Figure 2 and Fig.10 In this embodiment, a material box mechanism (8) is arranged between the cutting and lengthening mechanism (5) and the automatic feeding mechanism (6), and the material box mechanism (8) includes a support frame (81), and a placement plate (82) is installed on the upper part of the support frame (81), and a material discharge box (83) is installed on the upper part of the placement plate (82), and the material discharge box (83) is provided with a discharge area (831) for placing material tubes to be processed; waste areas (832) are arranged at both ends of the discharge area (831), and the waste tubes cut off at both ends are clamped by the feeding claws (24) of the automatic feeding mechanism (2) and placed in the waste area (832).

[0080] The standard parts used in this embodiment can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art and will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0081] The present invention also provides an embodiment of a balloon stretching method, which is performed by the balloon stretching device in the above embodiment, and the stretching method comprises the following steps:

[0082] Reset all slide modules and drive cylinders through the touch screen connected to the host computer, and set processing parameters and processing sequence according to product models and production requirements;

[0083] The feeding cylinder (231) drives the feeding clamp (24) and / or the feeding suction cup (25) to take out a single material tube in the discharge box (83), and moves the material tube to the next processing station through vertical and horizontal lateral movements. The pre-stretching cylinder (421) drives the pre-stretching chuck (431) to clamp the two ends of the material tube, and adjusts the spacing through the gear rack mechanism. The heating cylinder (422) closes the heating plate (441) and heats it, and then pre-stretches the material tube synchronously. During this period, the production parameters are monitored by the position sensor (414) and the tension sensor (416), and the length of the balloon vesicle is automatically adjusted;

[0084] The feeding cylinder (231) drives the feeding clamp (24) and / or the feeding suction cup (25) to take out the pre-stretched material tube, the cutting cylinder (521) drives the cutting clamp (513) to clamp and fix the material tube, the lifting cylinder (522) drives the cutting blade (514) to cut the material tube to a set length, and the waste material is clamped by the feeding clamp (24) and placed in the waste area (832) of the material discharge box (83);

[0085] The feeding cylinder (621) drives the feeding claws (63) at the feeding end and the middle to clamp the cut material tube and move synchronously, driving the material tube to pass through the forming water jacket assembly (74) to complete the feeding of the straight section mold in the water jacket;

[0086] The feeding cylinder (621) drives the feeding clamp (63) at the discharge end to clamp the end of the material pipe passing through the molding water jacket assembly (74) and the feeding clamp (63) at the feed end to run synchronously to send the material pipe out a fixed distance, release and retreat to the clamping position, clamp the material pipe again and send it forward a fixed distance, repeat the above action until the material pipe passes through the interior of the proximal mold (752) and enters the sealing clamp (761), completing the feeding of the proximal mold (752), the clamping cylinder (723) drives the sealing clamp (761) to lock and seal through the clamping cylinder (723), and the feeding cylinder (621) drives the middle feeding clamp (63) to withdraw and move to the initial position;

[0087] The feeding cylinder (621) drives the feeding clamp (63) at the feeding end, the distal die (751) and the stretching chuck to move synchronously, and in the same way, the other end of the material tube is passed through the distal die (751) and sent into the stretching chuck (731) for clamping and fixing, thereby completing the feeding of the distal die (751);

[0088] The distal mold (751), the proximal mold (752) and the forming water jacket assembly (74) are closed, the balloon bubble position is adjusted to be centered, and the balloon is heated and filled with nitrogen to complete the balloon forming production process;

[0089] The unloading cylinder (331) drives the unloading clamp (34) to take out the finished balloon catheter product and send it into the collection box.

[0090] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A balloon stretching and forming device, characterized in that: include: A support frame (1), an automatic loading mechanism (2) and an automatic unloading mechanism (3) are installed on the top of the support frame (1), a workbench (11) is arranged inside the support frame (1), and a plurality of groups of pre-stretching mechanisms (4), cutting and lengthening mechanisms (5), automatic feeding mechanisms (6) and stamping and sealing mechanisms (7) are arranged on the workbench (11); The automatic feeding mechanism (2) comprises a first linear motor slide module (21), a first linear screw slide module (22), a first drive cylinder (23), a feeding clamp (24) and / or a feeding suction cup (25), and the automatic feeding mechanism (2) is used to complete the placement and movement of a single pipe material; The automatic unloading mechanism (3) is arranged on one side of the automatic loading mechanism (2), and the automatic unloading mechanism (3) comprises a second linear motor slide module (31), a second linear screw slide module (32), a second drive cylinder (33) and an unloading clamp (34). The automatic unloading mechanism (3) is used to complete the placement and movement of balloon products. The pre-stretching mechanism (4) comprises a third linear motor slide module (41), a third drive cylinder (42), a pre-stretching component (43) and a heating component (44), and the pre-stretching mechanism (4) is used to complete the heating and pre-stretching of the catheter; The cutting and lengthening mechanism (5) is arranged on one side of the pre-stretching mechanism (4), the cutting and lengthening mechanism (5) comprises a cutting assembly (51) and a cutting drive cylinder (52), and the cutting and lengthening mechanism (5) is used to clamp a fixed-length cutting material tube; The automatic feeding mechanism (6) is arranged on one side of the cutting and lengthening mechanism (5), and the automatic feeding mechanism (6) comprises a fourth linear motor slide module (61), a fourth driving cylinder (62) and a feeding clamp (63), and the automatic feeding mechanism (6) is used to clamp the material tube for moving and feeding; The stamping and sealing mechanism (7) is arranged at one end of the cutting and lengthening mechanism (5), and comprises a fifth linear motor slide module (71), a fifth driving cylinder (72), a clamping and stretching component (73), a forming water jacket component (74), a mold component (75) and a stamping and sealing component (76). The stamping and sealing mechanism (7) is used for clamping the material tube, stretching, inflating, and hot pressing to form a balloon catheter.

2. The balloon stretching and forming equipment according to claim 1, characterized in that: The support frame (1) comprises a side support weldment (12) and a top support weldment (13), the top support weldment (13) and the side support weldment (12) are welded together, and the first linear motor slide module (21) and the second linear motor slide module (31) are installed in parallel between the top support weldment (13); A first fixing plate (15) is mounted on the top bracket weldment (13) via a first support block (14); the first linear screw slide module (22) and the second linear screw slide module (32) are mounted in parallel at the bottom of the first fixing plate (15); A second fixed plate (17) is installed on the support platform via a second support block (16), and the third linear motor slide module (41) and the fourth linear motor slide module (61) are installed in parallel on the upper part of the second fixed plate (17).

3. The balloon stretching and forming equipment according to claim 1, characterized in that: The first linear motor slide module (21) includes a first slide (211), the first driving cylinder (23) is detachably connected via a first mounting plate (212) and a first sliding plate (213) at the bottom of the first slide (211), the first driving cylinder (23) includes a plurality of groups of loading cylinders (231), the loading cylinders (231) on both sides are detachably connected via a first connecting plate (214) and a loading clamp (24), and the loading cylinders (231) in the middle are detachably connected via a first connecting plate (214) and a loading suction cup (25).

4. The balloon stretching and forming equipment according to claim 1, characterized in that: The second linear motor slide module (31) includes a second slide (311), the second driving cylinder (33) is detachably connected to the second sliding plate (313) at the bottom of the second slide (311) via a second mounting plate (312), and the second driving cylinder (33) includes multiple groups of unloading cylinders (331), and the unloading cylinders (331) are detachably connected to the unloading clamp (34) via a second connecting plate (314).

5. The balloon stretching and forming equipment according to claim 1, characterized in that: The third linear motor slide module (41) comprises a third slide (411), the third drive cylinder (42) is detachably connected to the third slide plate (413) on the top of the third slide (411) via a third mounting plate (412), a position sensor (414) is arranged on one side of the third slide (411), a floating seat (415) is arranged between the third mounting plate (412) and the third drive cylinder (42), and a tension sensor (416) is arranged inside the floating seat (415); The third driving cylinder (42) comprises a plurality of groups of pre-stretching cylinders (421) and heating cylinders (422), the pre-stretching cylinders (421) and the pre-stretching components (43) are detachably connected, the pre-stretching components (43) comprise a pre-stretching clamp (431), the heating cylinders (422) and the heating components (44) are detachably connected, and the heating components (44) comprise a heating plate (441); A plurality of groups of heating plates (441) are arranged between the pre-stretching clamps (431), a gear rack sliding module (45) is arranged below the heating cylinder (422), and the heating cylinder (422) is detachably connected to the gear rack transmission module via a sliding seat (451).

6. The balloon stretching and forming equipment according to claim 1, characterized in that: The second driving cylinder (33) is detachably connected via a cutting fixing plate (511) and a cutting support plate (512); the second driving cylinder (33) comprises a cutting cylinder (521) and a lifting cylinder (522); the cutting assembly (51) comprises a cutting jaw (513) and a cutting blade (514); the cutting jaw (513) is detachably connected via a cutting fixing plate (511) and a cutting cylinder (521); and the cutting blade (514) is detachably connected via a blade support (515) and a lifting cylinder (522).

7. The balloon stretching and forming equipment according to claim 1, characterized in that: A material box mechanism (8) is arranged between the cutting and lengthening mechanism (5) and the automatic feeding mechanism (6), and the material box mechanism (8) comprises a support frame (81), a placement plate (82) is installed on the upper part of the support frame (81), a material discharge box (83) is installed on the upper part of the placement plate (82), the material discharge box (83) is provided with a material discharge area (831), and waste areas (832) are arranged at both ends of the material discharge area (831).

8. The balloon stretching and forming equipment according to claim 1, characterized in that: The fourth linear motor slide module (61) includes a fourth slide (611), the fourth drive cylinder (62) is detachably connected via a fourth mounting plate (612) and a fourth sliding plate (613) on the top of the fourth slide (611), the fourth drive cylinder (62) includes a plurality of groups of feed cylinders (621), and the feed cylinders (621) are detachably connected via a fourth connecting plate (614) and a feed clamp (63).

9. The balloon stretching and forming equipment according to claim 1, characterized in that: The fifth linear motor slide module (71) comprises a fifth slide (711), and the fifth drive cylinder (72) is detachably connected via a fifth mounting plate (712) and a fifth sliding plate (713) on the top of the fifth slide (711); The fifth driving cylinder (72) comprises a re-stretching cylinder (721), a sliding cylinder (722) and a pressing oil cylinder (723); the re-stretching cylinder (721) is detachably connected to the clamping and stretching assembly (73) via a fifth connecting plate (714); the sliding cylinder (722) is detachably connected to the mold assembly (75) via a fifth connecting plate (714); and the pressing oil cylinder (723) is detachably connected to the stamping seal assembly (76) via a fifth connecting plate (714); The clamping and stretching assembly (73) includes a re-stretching chuck (731), and the re-stretching chuck (731) and the output end of the re-stretching cylinder (721) are detachably connected. The molding water jacket assembly (74) includes an outer shell (741), and a heating chamber is arranged inside the outer shell (741). The mold assembly (75) includes a distal mold (751) and a proximal mold (752), and the distal mold (751) and the proximal mold (752) are arranged at two ends of the molding water jacket assembly (74). The stamping sealing assembly (76) includes a sealing chuck (761), and the sealing chuck (761) and the output end of the clamping cylinder (723) are detachably connected.

10. A balloon stretching method, characterized in that: The stretching method is performed by a balloon stretching device according to any one of claims 1 to 9, and the stretching method comprises: Reset all slide modules and drive cylinders, set processing parameters and processing sequence; The feeding cylinder (231) drives the feeding clamp (24) and / or the feeding suction cup (25) to take out a single material tube in the discharge box (83), and the pre-stretching cylinder (421) drives the pre-stretching chuck (431) to clamp the two ends of the material tube, and the material tube is pre-stretched synchronously after being heated by the heating plate (441); The feeding cylinder (231) drives the feeding clamp (24) and / or the feeding suction cup (25) to take out the pre-stretched material tube, the cutting cylinder (521) drives the cutting clamp (513) to clamp and fix the material tube, and the lifting cylinder (522) drives the cutting blade (514) to cut the material tube into a set length; The feeding cylinder (621) drives the feeding claws (63) at the feeding end and the middle to clamp the cut material tube and move synchronously, driving the material tube to pass through the forming water jacket assembly (74) to complete the feeding of the straight section mold in the water jacket; The feeding cylinder (621) drives the feeding clamp (63) at the discharge end to clamp the end of the material pipe passing through the molding water jacket assembly (74) and the feeding clamp (63) at the feed end to run synchronously to send the material pipe out a fixed distance, release and retreat to the clamping position, the feeding clamp (63) clamps the material pipe again and sends it forward a fixed distance, repeating the above actions until the material pipe passes through the interior of the proximal mold (752) and enters the sealing clamp (761), completing the feeding of the proximal mold (752), the clamping cylinder (723) drives the sealing clamp (761) to lock, and the feeding cylinder (621) drives the middle feeding clamp (63) to withdraw and move to the initial position; The feeding cylinder (621) drives the feeding clamp (63), the distal die (751) and the stretching chuck at the feeding end to move synchronously, and in the same way, the other end of the material tube is passed through the distal die (751) and sent into the re-stretching chuck (731), and the sliding cylinder (722) drives the sealing chuck (761) to clamp and fix, thus completing the feeding of the distal die (751); The distal mold (751), the proximal mold (752) and the molding water jacket assembly (74) are closed, the balloon bubble position is adjusted to be centered, and the balloon is heated and filled with nitrogen to complete the balloon molding production process.

Images