CN113246452B

CN113246452B - Dilator tip forming device and automatic tip forming machine

Info

Publication number: CN113246452B
Application number: CN202110793765.5A
Authority: CN
Inventors: 吕延安; 陈武; 邹斌; 鄢剑雨
Original assignee: Guangdong Dayu Intelligent Equipment Co ltd
Current assignee: Guangdong Dayu Intelligent Equipment Co ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2021-10-22
Anticipated expiration: 2041-07-14
Also published as: CN113246452A

Abstract

The invention discloses an expander tip forming device and an automatic tip forming machine, wherein the expander tip forming device comprises a tip forming module, an expander guide module and a tip through hole conduction module, and the tip forming module comprises a tip forming die and a heating device; the dilator guiding module comprises a guiding clamp and a guiding driving mechanism, a guide groove for accommodating the dilator body is arranged on the guiding clamp, and the axis of the guide groove is superposed with the axis of the tip forming die; the tip through hole conduction module comprises a core needle, a core needle mounting seat, a core needle guide mechanism and a core needle driving mechanism, wherein the core needle comprises a core needle body and a core needle outer sleeve, and the axis of the core needle coincides with the axis of the tip forming die. The tip forming device is simple in structure, and the processing steps are simple, so that the processing efficiency of the tip of the dilator can be greatly improved.

Description

Dilator tip forming device and automatic tip forming machine

Technical Field

The invention relates to plastic molding equipment, in particular to an expander tip molding device and an automatic tip molding machine.

Background

A puncture dilator is a medical instrument used in interventional operations for dilating puncture channels of skin, subcutaneous tissues and blood vessels (or puncture channels of other human body lumens, such as esophagus, trachea, urethra and the like). Puncture dilators used to dilate skin, subcutaneous tissue and vascular puncture channels generally have the following characteristics: one, have hollow lumen, is used for accepting and leading the steel wire (guide wire); and secondly, the device is provided with a tapered tip structure, so that the device is favorable for entering a human body and achieves the purpose of expansion. Structurally, the expander comprises a joint and a pipe body, and the tip is arranged at one end, far away from the joint, of the pipe body.

The utility model with the publication number of CN 212038564U discloses an expander, which comprises an expander joint and a pipe body, wherein the expander joint is fixedly connected with the pipe body, one end of the pipe body, which is far away from the expander joint, is provided with a tip with a through hole, and the tip is made of a soft material; the tip and the tube body are welded through a high-frequency tip forming machine. The manufacturing process of the dilator has the following problems:

1. a special device for manufacturing the tip and a device for welding the tip to the tube body are required, and the manufacturing equipment is complicated and the manufacturing cost is high.

2. The tip manufacturing step and the tip welding step are required, the manufacturing process is complicated, and the production efficiency is low. 3. The feeding and discharging processes of the expander are carried by workers, labor is consumed, production efficiency is low, and large-scale production is not facilitated.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides the expander tip forming device which is simple in structure and simple in process steps, so that the machining efficiency of the expander tip can be greatly improved.

Another object of the present invention is to provide an automatic tip forming machine including the above dilator tip forming apparatus, which can automatically complete the feeding and tip forming processes, and has a simple structure and simple process steps, thereby greatly improving the efficiency of dilator tip forming processes.

The technical scheme for solving the technical problems is as follows:

a dilator tip forming device comprises a tip forming module, a dilator guiding module and a tip through hole conducting module, wherein the dilator guiding module is used for ensuring that a dilator corresponds to the tip forming module in position, the tip through hole conducting module is used for preventing through holes in a tip from being blocked in the tip forming process, the tip forming module is located at the forefront, the dilator guiding module is located in the middle, and the tip through hole conducting module is located at the rear along the direction of the tip of the dilator; the tip forming module comprises a tip forming die and a heating device for heating the tip forming die; the dilator guiding module comprises a guiding clamp for guiding the dilator and a guiding driving mechanism for driving the guiding clamp to open or close, a guide groove for accommodating a dilator body is formed in the guiding clamp, and the axis of the guide groove is overlapped with the axis of the tip forming die; the tip through hole conduction module comprises a core needle, a core needle mounting seat used for mounting the core needle, a core needle guiding mechanism used for guiding the core needle into the inner cavity of the expander and a core needle driving mechanism used for driving the core needle to penetrate through the inner cavity of the expander to reach the tip forming die, the core needle comprises a core needle body and a core needle outer sleeve, and the axis of the core needle coincides with the axis of the tip forming die.

The working principle of the dilator tip forming device is as follows:

the expander comprises a joint and a pipe body connected to the joint, a hollow inner cavity is formed in the expander, a tip is machined at one end, away from the joint, of the pipe body in the tip forming mode, and a tip through hole communicated with the inner cavity of the pipe body is formed in the tip. Specifically, firstly, the heating device is started to heat the tip forming die; next, the guide driving mechanism drives the guide clamp to open, the tube body of the expander is placed into the guide groove, the guide driving mechanism continues to act to drive the guide clamp to close, and therefore the expander is kept in the guide groove, and the tube body of the expander is aligned to the tip forming die at the moment due to the fact that the axis of the guide groove is overlapped with the axis of the tip forming die; next, the core needle guiding mechanism acts to enable the inner cavity of the dilator to correspond to the position of the core needle, and preparation is made for the core needle body to enter the inner cavity of the dilator; then, the core needle driving mechanism drives the core needle to enter the inner cavity of the expander, and when the front end of the core needle body reaches the front end of the tube body, the end part of the core needle outer sleeve abuts against the end part of the joint; then, the core needle driving mechanism continues to drive the core needle to move forwards, so that the core needle outer sleeve pushes the joint to move forwards, and the front end of the pipe body and the front end of the core needle body reach the position of the tip forming die together; meanwhile, the heating device started in advance enables the temperature of the tip forming die to rise and keep constant temperature, so that the front end of the tube body is hot melted and filled with the tip forming die, a tip is formed at the front end of the tube body, and the tip forming machining process is completed. The tip forming device disclosed by the invention is simple in structure, the tip is directly formed at the front end of the tube body through hot melting by the tip forming die, the process steps are simple, and the processing efficiency of the tip of the dilator is greatly improved.

In a preferred embodiment of the present invention, the tip shaping mold comprises a tip shaping section and a guide mounting section, wherein the diameter of the inner cavity of the tip shaping section is gradually reduced along the front direction, so as to form a conical inner cavity; the outer wall of the guide installation section is a section of cylinder, the diameter of the inner cavity is gradually reduced along the front, and the minimum diameter position of the inner cavity of the guide installation section is matched with the diameter of the expander pipe body.

In a preferred embodiment of the present invention, the heating device is a high-frequency heating machine, the high-frequency heating machine includes a heating coil, and both ends of the heating coil are connected to a power line through a wire; the heating coil is arranged outside the tip molding section.

In a preferred embodiment of the present invention, the tip forming module further includes a mold mounting bracket for mounting the tip forming mold, the mold mounting bracket is provided with a mold mounting hole, and an inner wall of the mold mounting hole is matched with an outer wall of the guide mounting section.

In a preferred embodiment of the present invention, the tip molding module further includes a cooling assembly for cooling the tip molding die, the cooling assembly includes a front cooling structure for cooling the tip molding section and a rear cooling structure for cooling the guide mounting section, the front cooling structure includes a cooling connection plate mounted above the die mounting frame, a front airflow channel disposed in the cooling connection plate, and an air nozzle connected to an end of the front airflow channel, and an outlet of the front airflow channel is disposed toward the tip molding section; the rear cooling structure comprises a rear airflow channel arranged in the die mounting frame and an air faucet connected with the end of the rear airflow channel, and the rear airflow channel surrounds the die mounting hole.

According to a preferable scheme of the invention, the guide clamp comprises a fixed clamp and a movable clamp, the top of the fixed clamp is inclined downwards from left to right to form an inclined plane, the bottom of the movable clamp is provided with an inclined plane matched with the inclined plane at the top of the fixed clamp, and the guide groove is arranged at the top of the fixed clamp; the guide driving mechanism comprises a guide driving cylinder, and the end part of the movable clamp is connected with a sliding block of the guide driving cylinder through a guide connecting plate.

Preferably, the number of the fixed clamps and the number of the movable clamps are two, and the two fixed clamps and the two movable clamps are respectively arranged on the front side and the rear side of the guide driving cylinder.

In a preferred embodiment of the present invention, the core pin mounting seat includes a core pin mounting plate, and the core pin is disposed on the core pin mounting plate through a core pin sheath.

Preferably, the core pin outer sleeve is mounted on the core pin mounting plate through a buffer structure, and the buffer structure comprises a buffer slide rail arranged on the core pin mounting plate, a buffer slide block matched with the buffer slide rail, a buffer connecting plate mounted on the buffer slide block, a baffle plate used for limiting the position of the buffer slide block, and a buffer spring arranged between the buffer connecting plate and the baffle plate; the core needle outer sleeve is installed on the buffering slide block, and the length direction of the buffering slide rail is parallel to the length direction of the expander.

According to a preferable scheme of the invention, the core needle driving mechanism comprises a screw rod slide rail mechanism and a core needle driving motor, the screw rod slide rail mechanism comprises a slide rail slide block structure and a screw rod nut structure, and the slide rail slide block structure comprises two slide rails arranged along the front-back direction and a slide block matched with the slide rails; the screw rod nut structure comprises a screw rod mounting seat, a screw rod and a screw rod nut, wherein the screw rod is mounted on the screw rod mounting seat through a bearing; the core pin mounting plate is mounted on the slide rail through a slide block, and the feed screw nut structure is arranged at the bottom of the core pin mounting plate; the core needle driving motor is connected with the screw rod through a core needle transmission mechanism, and the core needle transmission mechanism comprises a driving synchronous wheel arranged on a rotating shaft of the core needle driving motor, a driven synchronous wheel arranged at the end part of the screw rod and a synchronous belt sleeved between the driving synchronous wheel and the driven synchronous wheel.

According to a preferable scheme of the invention, the core needle guide mechanism is arranged behind the dilator guide module and corresponds to the joint of the dilator in position, and comprises a guide claw and a finger cylinder for driving the guide claw to open or close.

Preferably, the guide claw comprises a left claw and a right claw, and the left claw and the right claw are respectively arranged on the clamping blocks of the finger cylinder and staggered front and back; a left claw groove for clamping the expander joint is formed in the main body of the left claw, and the left claw groove is gradually enlarged from left to right; the main body of the right claw is provided with a right claw groove used for clamping the expander joint, and the right claw groove is gradually increased from right to left.

An automatic tip forming machine for a dilator comprises a rack, a feeding module for providing the dilator to be processed, a tip forming device, a taking robot for conveying the dilator from the feeding module to the tip forming device, a detection module for detecting whether the tip processing forming effect is qualified or not and a blanking module for conveying the dilator subjected to tip processing forming to a collecting box; the feeding module is provided with a discharging position for outputting the expander; the material taking robot comprises a material sucking clamping jaw; the detection module is arranged between the tip forming device and the material receiving box, and comprises a conduction detection module for detecting whether a through hole in the tip is qualified or not and a tip shape detection module for detecting whether the tip shape is qualified or not; the blanking module comprises a blanking clamping jaw.

In a preferred embodiment of the present invention, the feeding module includes a storage bin, a vibrating tray for dispersing the expanders in the storage bin, and an alignment device for acquiring coordinate information of the expanders, wherein the discharge position is set at an outlet of the vibrating tray, the alignment device includes an alignment camera, and the alignment camera is set above the discharge position.

According to a preferable scheme of the invention, the material taking robot is a four-axis robot, the four-axis robot comprises a mechanical arm, and the material sucking clamping jaw is arranged at the tail end of the mechanical arm; the material suction clamping jaw comprises a first connecting plate arranged at the tail end of the mechanical arm, a first material suction jaw for sucking the expander and a first clamping jaw for clamping the expander; the first suction claw is mounted on the first connecting plate through a first telescopic cylinder and comprises a suction groove used for being matched with the outer diameter of the expander and a suction channel arranged on the suction groove, and the suction channel is communicated with a negative pressure air source; the first clamping jaw comprises two first movable jaws and a first finger cylinder used for driving the first movable jaws to be opened or closed, and the first finger cylinder is arranged on the first connecting plate.

In a preferred embodiment of the present invention, the conduction detection module includes a guide wire and a guide wire driving mechanism for driving the guide wire into the lumen of the dilator; the guide wire driving mechanism comprises a guide wire driving motor and a guide wire linear module connected with the guide wire driving motor, and the guide wire is installed on a sliding block of the guide wire linear module through a guide wire installing plate.

In a preferred embodiment of the present invention, the tip shape detection module includes a shape detection camera and a camera mounting bracket for mounting the shape detection camera, and the camera mounting bracket is mounted on the frame.

According to a preferable scheme of the invention, the blanking clamping jaw comprises two second movable jaws and a second finger cylinder for driving the second movable clamp to open or close, and the two second movable jaws are respectively installed on a clamping jaw of the second finger cylinder.

According to a preferable scheme of the invention, the blanking module further comprises a blanking driving motor and a blanking linear module connected with the blanking driving motor, the blanking clamping jaw is mounted on a sliding block of the blanking linear module through a connecting mechanism, the connecting mechanism comprises a second connecting plate for mounting the second finger cylinder, an up-down telescopic cylinder for driving the second connecting plate to move up and down, a third connecting plate for mounting the up-down telescopic cylinder and a front-back telescopic cylinder for driving the third connecting plate to move back and forth, and the front-back telescopic cylinder is connected with the sliding block of the blanking linear module.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the dilator tip forming device, the tip with the through hole can be processed at the front end of the dilator tube body through the tip forming module and the tip through hole conduction module, and the forming device is simple in structure and low in production cost.

2. According to the expander tip forming device, the tip is directly hot-melted at the front end of the tube body, compared with a mode that the tip is welded on the tube body by a special welding device, the process steps are simpler, the processing efficiency is improved, and the processing cost is reduced.

3. The dilator tip forming device directly and integrally forms the tip at the front end of the tube body, the tip and the tube body belong to the same material, the tube body and the tip can be connected in a seamless mode, the connection is reliable, and the product quality is good.

Drawings

Fig. 1 is a schematic view of a dilator.

Fig. 2-3 are schematic views of the dilator tip shaping device of the present invention, wherein fig. 2 is a top view and fig. 3 is a perspective view.

Fig. 4 is a perspective view of the tip molding die.

Fig. 5 is a perspective view of a tip shaping module.

Fig. 6-7 are schematic views of a dilator guiding module, wherein fig. 6 is a front view and fig. 7 is a perspective view.

Fig. 8 to 9 are schematic views of the core needle guide mechanism, in which fig. 8 is a front view and fig. 9 is a perspective view.

Fig. 10 is a perspective view of the automatic dilator tip forming machine of the present invention.

Fig. 11-12 are schematic views of a feed module, wherein fig. 11 is a front view and fig. 12 is a perspective view.

Fig. 13-14 are schematic views of a material picking robot, wherein fig. 13 is a perspective view of one direction and fig. 14 is a perspective view of the other direction.

Fig. 15 is a perspective view of a detection module.

Fig. 16 is a perspective view of a blanking module.

Detailed Description

The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.

Referring to fig. 1-9, the dilator tip forming device of the present invention comprises a tip forming module 3, a dilator guiding module 4 for ensuring the position of the dilator corresponding to the tip forming module 3, and a tip through hole conducting module 5 for preventing the through hole inside the tip from being blocked during the tip forming process, wherein, along the direction of the dilator tip, the tip forming module 3 is located at the forefront, the dilator guiding module 4 is located at the middle, and the tip through hole conducting module 5 is located at the rear; the tip forming module 3 comprises a tip forming die and a heating device for heating the tip forming die; the dilator guiding module 4 comprises a guiding clamp for guiding the dilator and a guiding driving mechanism for driving the guiding clamp to open or close, a guide groove 17-1 for accommodating a tube body 1 of the dilator is formed in the guiding clamp, and the axis of the guide groove 17-1 is overlapped with the axis of the tip forming die; the tip through hole conduction module 5 comprises a core needle, a core needle mounting seat 6 for mounting the core needle, a core needle guiding mechanism 7 for guiding the core needle into the inner cavity of the expander, and a core needle driving mechanism 8 for driving the core needle to penetrate through the inner cavity of the expander and reach the tip forming die, wherein the core needle comprises a core needle body 9 and a core needle outer sleeve 10, and the axis of the core needle coincides with the axis of the tip forming die.

Referring to fig. 4, the tip shaping mold comprises a tip shaping section 11 and a guide mounting section 12, wherein the diameter of the inner cavity of the tip shaping section 11 is gradually reduced along the front direction, so that a conical inner cavity is formed; the outer wall of the guide installation section 12 is a section of cylinder, the diameter of the inner cavity is gradually reduced along the front, and the minimum diameter position of the inner cavity of the guide installation section 12 is matched with the diameter of the dilator tube body 1. Set up the most advanced forming die of above-mentioned structure, at the in-process of 1 front end of body forward motion in order to accomplish most advanced shaping, 1 front end of body is at first through the inner chamber of direction erection section 12, because the inner chamber diameter of direction erection section 12 reduces forward gradually, consequently, the inner chamber department of direction erection section 12 forms a direction mouth, play the effect of direction to the entering of body 1, body 1 front end continues forward motion and reaches most advanced shaping section 11, because the inner chamber of most advanced shaping section 11 is a taper shape, consequently, body 1 front end after the hot melt, fill behind the inner chamber of most advanced shaping section 11, form a pointed end, thereby accomplish most advanced contour machining.

Referring to fig. 4 to 5, the heating apparatus is a high frequency heating machine including a heating coil 13, and both ends of the heating coil 13 are connected to a power supply line through a wire; the heating coil 13 is disposed outside the tip molding section 11. By providing the above-mentioned heating device, after the wire is powered on, the heating coil 13 starts to generate heat to generate high temperature, and since the heating coil 13 is disposed outside the tip molding section 11, the high temperature generated by the heating coil 13 reaches the tip molding section 11 of the tip molding die first, so that the temperature of the tip molding section 11 is rapidly increased to fuse the front end of the tube body 1.

Referring to fig. 2, 3 and 5, the tip forming module 3 further includes a mold mounting frame 14 for mounting the tip forming mold, a mold mounting hole is formed in the mold mounting frame 14, and an inner wall of the mold mounting hole is matched with an outer wall of the guide mounting section 12. The die mounting frame 14 with the structure is arranged, the outer wall of the guide mounting section 12 is matched with the die mounting hole, and the outer wall of the guide mounting section 12 is nested in the die mounting hole to complete the mounting of the tip forming die.

Referring to fig. 2, 3 and 5, the tip molding module 3 further includes a cooling assembly for cooling the tip molding die, the cooling assembly includes a front cooling structure for cooling the tip molding section 11 and a rear cooling structure for cooling the guide mounting section 12, the front cooling structure includes a cooling connection plate 15 mounted above the die mounting frame 14, a front airflow channel disposed in the cooling connection plate 15, and an air nozzle 16 connected to an end of the front airflow channel, an outlet of the front airflow channel is disposed toward the tip molding section 11; the rear cooling structure comprises a rear airflow channel arranged in the mold mounting frame 14 and an air nozzle 16 connected with the end part of the rear airflow channel, and the rear airflow channel surrounds the mold mounting hole. The cooling assembly with the structure is arranged, the air nozzle 16 is connected with the origin, the temperature of the mold needs to be reduced after the processing of the tip of the expander is completed, so that the tip demolding is facilitated, the origin is opened for the front cooling structure, the gas enters the front gas flow channel from the air nozzle 16, and the outlet of the front gas flow channel is arranged towards the tip molding section 11, so that the heat around the tip molding section 11 is rapidly taken away by high-speed gas flow, the temperature of the tip molding section 11 is rapidly reduced, and the demolding is facilitated; for the post cooling structure, air enters the post airflow channel from the air tap 16, the post airflow channel is arranged around the die mounting hole, and high-speed airflow takes away heat around the guide mounting section 12, so that the temperature of the guide mounting section 12 is rapidly reduced.

Referring to fig. 6 and 7, the guide clamp comprises a fixed clamp 17 and a movable clamp 18, the top of the fixed clamp 17 is inclined downwards from left to right to form an inclined surface, the bottom of the movable clamp 18 is provided with an inclined surface matched with the inclined surface of the top of the fixed clamp 17, and the guide groove 17-1 is arranged at the top of the fixed clamp 17; the guide driving mechanism comprises a guide driving cylinder 19, and the end part of the movable clamp 18 is connected with a sliding block of the guide driving cylinder 19 through a guide connecting plate 20. The expander guide module 4 with the structure is arranged, when the guide driving cylinder 19 is opened, the sliding block of the guide driving cylinder 19 drives the guide connecting plate 20 to move towards the right side, so that the movable clamp 18 is away from the fixed clamp 17 rightwards, and the guide clamp is in an opened state; when the guide driving cylinder 19 is closed, the slide block of the guide driving cylinder 19 drives the guide connecting plate 20 to move to the left side, so that the movable clamp 18 approaches the fixed clamp 17 to the left side, at the moment, the guide clamp is in a closed state, in the state, the tube body 1 of the expander is placed in the guide groove 17-1, under the mutual limitation of the movable clamp 18 and the fixed clamp 17, the tube body 1 only can have the degree of freedom in the axial direction of the guide groove 17-1, the degrees of freedom in other directions are all limited, and the axial line of the guide groove 17-1 is overlapped with the axial line of the tip forming die, so that in the closed state of the guide clamp, the axial line of the expander is aligned with the axial line of the tip forming die, and the effect of guiding the expander is achieved.

Referring to fig. 6 and 7, there are two fixed clips 17 and two movable clips 18, and the two fixed clips 17 and the two movable clips 18 are respectively disposed on the front side and the rear side of the guide driving cylinder 19. Two movable clamps 18 and two fixed clamps 17 are arranged, two supporting points of the pipe body 1 are arranged in the length direction of the pipe body 1, namely the fixed clamp 17 in the front and the fixed clamp 17 in the rear, and therefore the two guide grooves 17-1 play a role in guiding the pipe body 1 together, so that the position of the pipe body 1 is more stable, and the guide is more accurate.

Referring to fig. 2 and 3, the core pin mounting seat 6 comprises a core pin mounting plate 21, and the core pin is arranged on the core pin mounting plate 21 through a core pin outer sleeve 10. The core needle mounting seat 6 is arranged, the core needle outer sleeve 10 is arranged on the core needle mounting plate 21, and when the core needle driving mechanism 8 drives the mounting plate to move, the core needle mounting plate 21 drives the core needle outer sleeve 10 to move, so that the core needle is driven to move forwards or backwards.

Referring to fig. 2 and 3, the core pin sheath 10 is mounted on the core pin mounting plate 21 through a buffer structure, the buffer structure includes a buffer slide rail 22 arranged on the core pin mounting plate 21, a buffer slide block 23 matched with the buffer slide rail 22, a buffer connecting plate 24 mounted on the buffer slide block 23, a baffle plate for limiting the position of the buffer slide block 23, and a buffer spring 25 arranged between the buffer connecting plate 24 and the baffle plate; the core needle jacket 10 is installed on the buffer sliding block 23, and the length direction of the buffer sliding rail 22 is parallel to the length direction of the dilator. Set up above-mentioned buffer structure, core needle mounting panel 21 drives the core needle moves the in-process forward, in the twinkling of an eye with the expander contact, the expander gives a backward power of core needle for the core needle has a trend of rearward movement, the core needle passes through buffering connecting plate 24 and installs on buffering slider 23, thereby buffering slider 23 backward movement drives buffering connecting plate 24 backward extrusion buffer spring 25, thereby buffer spring 25 compression eliminates the trend of core needle rearward movement, thereby play the effect of buffering, avoid the rigid collision of core needle and expander.

Referring to fig. 2 and 3, the core needle driving mechanism 8 includes a lead screw slide rail mechanism and a core needle driving motor 26, the lead screw slide rail mechanism includes a slide rail slider structure and a lead screw nut 30 structure, the slide rail slider structure includes two slide rails 27 arranged along the front-back direction and a slider 28 matched with the slide rails 27; the screw rod nut structure comprises a screw rod mounting seat, a screw rod 29 and a screw rod nut 30, wherein the screw rod 29 is mounted on the screw rod mounting seat through a bearing, and the screw rod nut 30 is matched with the screw rod 29; the core pin mounting plate 21 is mounted on the slide rail 27 through a slide block 28, and the feed screw nut structure is arranged at the bottom of the core pin mounting plate 21; the core needle driving motor 26 is connected with the screw rod 29 through a core needle transmission mechanism, and the core needle transmission mechanism comprises a driving synchronous wheel arranged on a rotating shaft of the core needle driving motor 26, a driven synchronous wheel arranged at the end part of the screw rod 29 and a synchronous belt sleeved between the driving synchronous wheel and the driven synchronous wheel. The core needle driving mechanism 8 with the structure is arranged, the driving motor is started to enable the driving synchronous wheel to rotate, the power is transmitted to the driven synchronous wheel through the synchronous belt, the driven synchronous wheel is arranged at the end part of the lead screw 29, the driven synchronous wheel drives the lead screw 29 to rotate, the lead screw nut 30 moves along the length direction of the lead screw 29 due to the rotation of the lead screw 29, the core needle mounting plate 21 is mounted at the bottom of the core needle mounting plate 21 due to the lead screw nut structure, the core needle mounting plate 21 is mounted on the slide rail 27 through the slide block 28, and finally the core needle driving motor 26 rotates to drive the core needle mounting plate 21 to move back and forth on the slide rail 27, so that the core needle mounted on the core needle mounting plate 21 moves back and forth along the direction of the slide rail 27.

Referring to fig. 2-3 and 8-9, the core needle guide mechanism 7 is arranged behind the dilator guide module 4 and corresponds to the position of the joint 2 of the dilator, and the core needle guide mechanism 7 comprises a guide claw 32 and a finger cylinder 31 for driving the guide claw 32 to open or close. The core needle guide mechanism 7 with the structure is arranged, before the core needle enters the inner cavity of the expander, the finger cylinder 31 is firstly closed, so that the guide claw 32 is driven to be closed, the joint 2 of the expander is clamped, and the joint 2 of the expander is fixed in position.

Referring to fig. 8-9, the aligning claw 32 includes a left claw 32-1 and a right claw 32-2, and the left claw 32-1 and the right claw 32-2 are respectively installed on the clamping blocks of the finger cylinder 31 and staggered back and forth; a left claw 32-1 groove for clamping the expander joint 2 is formed in the main body of the left claw 32-1, and the left claw 32-1 groove is gradually enlarged from left to right; the main body of the right claw 32-2 is provided with a right claw 32-2 groove for clamping the expander joint 2, and the right claw 32-2 groove is gradually enlarged from right to left. By the aid of the guiding claw 32 with the structure, when the finger cylinder 31 is closed, the clamping blocks of the finger cylinder 31 move oppositely, so that the left claw 32-1 and the right claw 32-2 which are arranged on the clamping blocks move oppositely, and thus, the left claw 32-1 is clamped on the left side of the joint 2, the right claw 32-2 is clamped on the right side of the joint 2, the joint 2 of the expander is clamped, and a core needle can conveniently enter an inner cavity of the expander.

The working principle of the dilator tip forming device described above in fig. 1-9 is as follows:

the expander is including connecting 2 and connecting body 1 on connecting 2, and the inside of expander is equipped with hollow inner chamber, and the pointed end shaping is that the one end of keeping away from on body 1 and connecting 2 processes out the pointed end to make the inside at pointed end have with the most advanced through-hole of body 1 inner chamber intercommunication. Specifically, firstly, the heating device is started to heat the tip forming die; next, the guide driving mechanism drives the guide clamp to open, the tube body 1 of the expander is placed into the guide groove 17-1, the guide driving mechanism continues to act to drive the guide clamp to close, so that the expander is kept in the guide groove 17-1, and the tube body 1 of the expander is aligned to the tip forming die at the moment as the axis of the guide groove 17-1 is overlapped with the axis of the tip forming die; next, the core needle guiding mechanism 7 acts to enable the inner cavity of the dilator to correspond to the position of the core needle, so that preparation is made for the core needle body 9 to enter the inner cavity of the dilator; then, the core needle driving mechanism 8 drives the core needle to enter the inner cavity of the expander, and when the front end of the core needle body 9 reaches the front end of the tube body 1, the end part of the core needle outer sleeve 10 abuts against the end part of the joint 2; then, the core needle driving mechanism 8 continues to drive the core needle to move forward, so that the core needle outer sleeve 10 pushes the joint 2 to move forward, and the front end of the pipe body 1 and the front end of the core needle body 9 reach the position of the tip forming die together; meanwhile, the heating device which is started in advance enables the temperature of the tip forming die to rise and keep constant temperature, so that the front end of the tube body 1 is hot melted and filled with the tip forming die, a tip is formed at the front end of the tube body 1, and the tip forming processing process is completed. The tip forming device disclosed by the invention is simple in structure, and the tip is directly formed at the front end of the tube body 1 through hot melting by the tip forming die, so that the processing efficiency of the tip of the dilator is greatly improved.

Referring to fig. 10-16, an automatic tip forming machine for expanders comprises a frame 33, a feeding module 34 for providing expanders to be processed, a tip forming device 35, a taking robot 36 for conveying expanders from the feeding module 34 to the tip forming device 35, a detecting module 37 for detecting whether the shaping effect of the tip processing is qualified, and a blanking module 38 for conveying expanders after the tip processing is formed to a blanking box; the feeding module 34 is provided with a discharging position for outputting the expander; the material taking robot 36 comprises a suction gripping jaw 41; the detection module 37 is arranged between the tip forming device 35 and the receiving box, wherein the detection module 37 comprises a conduction detection module 39 for detecting whether the through hole in the tip is qualified or not and a tip shape detection module 40 for detecting whether the tip shape is qualified or not; the blanking module 38 includes a blanking jaw 42.

Referring to fig. 10, 11-12, the feeding module 34 includes a storage bin 43, a vibrating tray 44 for dispersing the expanders in the storage bin 43, and an alignment device for acquiring coordinate information of the expanders, wherein the discharging position is disposed at an outlet of the vibrating tray 44, the alignment device includes an alignment camera 45, and the alignment camera 45 is disposed above the discharging position. Set up above-mentioned feedway, its working process is: firstly, manually putting the expander with the pointed end to be processed into a storage bin 43, automatically feeding the expander to the vibrating disk 44 in the vibrating process of the vibrating disk 44, and dispersing the expander under the vibrating action of the vibrating disk 44 to reach the position of a discharging position; the alignment camera 45 takes pictures of the expanders on the discharging position for positioning, and coordinate data of the expanders are obtained, so that the material taking robot 36 can grab and carry the expanders conveniently.

Referring to fig. 2, 13-14, the material taking robot 36 is a four-axis robot, the four-axis robot includes a mechanical arm, and the material sucking clamping jaw 41 is disposed at the end of the mechanical arm; the suction clamping jaw 41 comprises a first connecting plate 46 arranged at the tail end of the mechanical arm, a first suction jaw 47 for sucking the expander and a first clamping jaw 48 for clamping the expander; the first suction claw 47 is mounted on the first connecting plate 46 through a first telescopic cylinder 49, the first suction claw 47 comprises a suction groove matched with the outer diameter of the expander and a suction channel arranged on the suction groove, and the suction channel is communicated with a negative pressure air source; the first holding jaw 48 includes two first movable jaws 48-1 and a first finger cylinder 48-2 for driving the first movable jaw 48-1 to open or close, and the first finger cylinder 48-2 is provided on the first link plate 46. The material taking robot 36 is arranged, the four-axis robot can realize the actions of lifting and transferring, and the material sucking clamping jaw 41 is arranged at the tail end of the mechanical arm, so that the four-axis robot can drive the material sucking clamping jaw 41 to lift and transfer, and the expander can be conveyed to the tip end forming device 35 from the material supply module 34; when the material sucking clamping jaw 41 is used for taking materials, firstly, the first telescopic cylinder 49 extends downwards to drive the first material sucking jaw 47 to move downwards, so that the material sucking groove is matched with the expander, and the expander is adsorbed on the first material sucking jaw 47 because the material sucking groove is provided with a gas sucking channel which is communicated with a negative pressure gas source; next, the first telescopic cylinder 49 is contracted upwards to lift the dilator upwards, meanwhile, the first finger cylinder 48-2 is opened to open the two first movable claws 48-1, and after the dilator is lifted to the position, the first finger cylinder 48-2 is closed to close the two first movable claws 48-1 to clamp the dilator; finally, the four axis robot continues to move, thereby transporting the dilator from the feeder module 34 to the tip shaping device 35.

Referring to fig. 10 and 15, the conduction detection module 39 includes a guide wire 50 and a guide wire driving mechanism for driving the guide wire 50 into the lumen of the dilator; the guide wire driving mechanism comprises a guide wire driving motor and a guide wire linear module 51 connected with the guide wire driving motor, and the guide wire 50 is installed on a sliding block of the guide wire linear module 51 through a guide wire installation plate 52. The conduction detection module 39 is arranged, when the blanking module 38 conveys the dilator after the tip machining and forming to the position of the detection module 37, the guide wire driving motor rotates, so that the slide block of the guide wire linear module 51 moves towards the direction of the dilator, and thus, the guide wire 50 enters the dilator and passes through the tip through hole, and whether the tip through hole is qualified is detected.

Referring to fig. 10 and 15, the tip profile detection module 40 includes a profile detection camera 53 and a camera mounting bracket 54 for mounting the profile detection camera 53, and the camera mounting bracket 54 is mounted on the frame 33. The tip shape module with the structure is arranged, when the blanking module 38 carries the dilator after the tip machining and forming is completed to the position of the detection module 37, the shape detection camera 53 is started, and the dilator is photographed and detected, so that whether the tip shape of the dilator is qualified or not is judged.

Referring to fig. 10 and 16, the blanking clamping jaw 42 includes two second movable jaws 55 and a second finger cylinder 56 for driving the second movable jaws 55 to open or close, and the two second movable jaws 55 are respectively mounted on the clamping jaws of the second finger cylinder 56. The feeding clamping jaw 42 is provided, so that when the second finger cylinder 56 is opened, the two second movable jaws 55 are opened, and when the second finger cylinder 56 is closed, the two second movable jaws 55 are closed, thereby clamping the expander and realizing the feeding and carrying functions.

Referring to fig. 10 and 16, the blanking module 38 further includes a blanking driving motor and a blanking linear module 57 connected to the blanking driving motor, the blanking clamping jaw 42 is mounted on a slider of the blanking linear module 57 through a connecting mechanism, the connecting mechanism includes a second connecting plate 58 for mounting the second finger cylinder 56, an upper and lower telescopic cylinder 59 for driving the second connecting plate 58 to move up and down, a third connecting plate 60 for mounting the upper and lower telescopic cylinder 59, and a front and rear telescopic cylinder 61 for driving the third connecting plate 60 to move back and forth, and the front and rear telescopic cylinder 61 is connected to the slider of the blanking linear module 57. The blanking module 38 is arranged, after the tip of the expander is machined, the blanking driving motor moves to drive the blanking linear module 57 to move, so that the connecting mechanism arranged on the slide block of the linear module moves along with the slide block to reach the position of the tip forming device 35, and under the cooperation of the front and back telescopic cylinders 61, the upper and lower telescopic cylinders 59 and the second finger cylinder 56, the second movable claw 55 grabs the expander which is machined and formed, and drives the expander to the position where the detection module 37 is located for detection; after the detection is finished, the blanking driving motor is continuously started to drive the blanking clamping jaw 42 to reach the position on the material receiving box, the expanders which are qualified in processing are placed in the qualified product material receiving box according to the detection result of the detection module 37, and expanders which are unqualified in processing are placed in the unqualified product material receiving box, so that the processes of feeding, material moving, tip forming processing, detection and blanking of the whole expander are finished.

The working principle of the automatic tip forming machine for the dilator described above with reference to fig. 10 to 16 is:

firstly, manually transporting the dilator to be processed to the feeding module 34, starting the feeding module 34 and conveying the dilator to the discharging position; next, the material taking robot 36 is started, the material sucking clamping jaw 41 acts to clamp the expander positioned on the material discharging position, after the material sucking clamping jaw 41 finishes the clamping action on the expander, the material taking robot 36 continues to act to convey the clamped expander to the tip end forming device 35; then, the tip molding device 35 starts to operate, thereby completing the tip processing of the dilator; next, the blanking module 38 is started, the blanking clamping jaw 42 reaches the position of the tip forming device 35, and the dilator with the processed tip is conveyed to the detection module 37; at this time, the conduction detection module 39 is started to detect the internal through hole of the tip, and determine whether the through hole of the tip is blocked, and the tip shape detection module 40 detects the tapered tip of the tip, for example, the total length of the dilator is detected, whether there is a burr at the tip, whether there is a notch at the tip, whether there is no molding at the tip, whether there is a wire drawing at the tip, and the like, and finally determines whether the tip is processed qualified; and finally, the blanking module 38 continues to act, the expanders with qualified tip processing are conveyed to the blanking box, the expanders with unqualified tip processing are conveyed to the waste box, and the automatic processing process of the tips of the expanders is finally completed.

The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.

Claims

1. The dilator tip forming device is characterized by comprising a tip forming module, a dilator guiding module and a tip through hole conducting module, wherein the dilator guiding module is used for ensuring that a dilator corresponds to the tip forming module in position, the tip through hole conducting module is used for preventing a through hole in the tip from being blocked in the tip forming process, the tip forming module is positioned at the forefront, the dilator guiding module is positioned in the middle, and the tip through hole conducting module is positioned at the rear along the direction of the dilator tip; the tip forming module comprises a tip forming die and a heating device for heating the tip forming die; the dilator guiding module comprises a guiding clamp for guiding the dilator and a guiding driving mechanism for driving the guiding clamp to open or close, a guide groove for accommodating a dilator body is formed in the guiding clamp, and the axis of the guide groove is overlapped with the axis of the tip forming die; the tip through hole conduction module comprises a core needle, a core needle mounting seat for mounting the core needle, a core needle guiding mechanism for guiding the core needle into the inner cavity of the expander and a core needle driving mechanism for driving the core needle to penetrate through the inner cavity of the expander and reach a tip forming die, the core needle comprises a core needle body and a core needle outer sleeve, and the axis of the core needle is superposed with the axis of the tip forming die;

the guide clamp comprises a fixed clamp and a movable clamp, the top of the fixed clamp is inclined downwards from left to right to form an inclined plane, the bottom of the movable clamp is provided with an inclined plane matched with the inclined plane at the top of the fixed clamp, and the guide groove is arranged at the top of the fixed clamp; the guide driving mechanism comprises a guide driving cylinder, and the end part of the movable clamp is connected with a sliding block of the guide driving cylinder through a guide connecting plate; the two fixed clamps and the two movable clamps are respectively arranged at the front side and the rear side of the guide driving cylinder;

the core needle guiding mechanism is arranged behind the expander guiding module and corresponds to the joint of the expander in position, and comprises a guiding claw and a finger cylinder for driving the guiding claw to open or close; before the core needle enters the inner cavity of the expander, the finger cylinder is closed, the guide claw is driven to close and clamp the joint of the expander, the joint of the expander is clamped and fixed, and the core needle is guided to enter the inner cavity of the expander.

2. The dilator tip forming device according to claim 1, wherein the tip forming die comprises a tip forming section and a guide mounting section, the inner cavity diameter of the tip forming section is gradually reduced along the front direction, so that a conical inner cavity is formed; the outer wall of the guide installation section is a section of cylinder, the diameter of the inner cavity is gradually reduced along the front, and the minimum diameter position of the inner cavity of the guide installation section is matched with the diameter of the expander pipe body.

3. The dilator tip forming device according to claim 2, wherein the tip forming module further comprises a mold mounting frame for mounting the tip forming mold, the mold mounting frame is provided with a mold mounting hole, and an inner wall of the mold mounting hole is matched with an outer wall of the guide mounting section.

4. An expander tip forming device as claimed in claim 3, wherein said tip forming module further comprises a cooling assembly for cooling the tip forming mold, said cooling assembly comprising a front cooling structure for cooling the tip forming section and a rear cooling structure for cooling the guide mounting section, said front cooling structure comprising a cooling connecting plate mounted above said mold mounting frame, a front air flow channel disposed in said cooling connecting plate, and an air nozzle connected to an end of said front air flow channel, an outlet of said front air flow channel being disposed toward said tip forming section; the rear cooling structure comprises a rear airflow channel arranged in the die mounting frame and an air faucet connected with the end of the rear airflow channel, and the rear airflow channel surrounds the die mounting hole.

5. A dilator tip forming apparatus according to claim 1, wherein the core pin mounting seat comprises a core pin mounting plate on which the core pin is disposed by a core pin sheath.

6. The dilator tip forming device according to claim 5, wherein the core needle sheath is mounted on the core needle mounting plate through a buffer structure, the buffer structure comprises a buffer slide rail arranged on the core needle mounting plate, a buffer slide matched with the buffer slide rail, a buffer connecting plate arranged on the buffer slide block, a baffle plate for limiting the position of the buffer slide block, and a buffer spring arranged between the buffer connecting plate and the baffle plate; the core needle outer sleeve is installed on the buffering slide block, and the length direction of the buffering slide rail is parallel to the length direction of the expander.

7. The dilator tip forming device according to claim 5, wherein the core needle driving mechanism comprises a lead screw slide rail mechanism and a core needle driving motor, the lead screw slide rail mechanism comprises a slide rail slider structure and a lead screw nut structure, the slide rail slider structure comprises two slide rails arranged along the front-back direction and a slider matched with the slide rails; the screw rod nut structure comprises a screw rod mounting seat, a screw rod and a screw rod nut, wherein the screw rod is mounted on the screw rod mounting seat through a bearing; the core pin mounting plate is mounted on the slide rail through a slide block, and the feed screw nut structure is arranged at the bottom of the core pin mounting plate; the core needle driving motor is connected with the screw rod through a core needle transmission mechanism, and the core needle transmission mechanism comprises a driving synchronous wheel arranged on a rotating shaft of the core needle driving motor, a driven synchronous wheel arranged at the end part of the screw rod and a synchronous belt sleeved between the driving synchronous wheel and the driven synchronous wheel.

8. An automatic tip forming machine for a dilator, which comprises a frame, a feeding module for providing the dilator to be processed, a tip forming device as claimed in any one of claims 1 to 7, a taking robot for conveying the dilator from the feeding module to the tip forming device, a detection module for detecting whether the processing and forming effect of the tip is qualified or not, and a blanking module for conveying the dilator after the processing and forming of the tip to a collecting box; the feeding module is provided with a discharging position for outputting the expander; the material taking robot comprises a material sucking clamping jaw; the detection module is arranged between the tip forming device and the material receiving box, and comprises a conduction detection module for detecting whether a through hole in the tip is qualified or not and a tip shape detection module for detecting whether the tip shape is qualified or not; the blanking module comprises a blanking clamping jaw.