A die-cutting production line and die-cutting method for a medical rubber tube

Abstract

The present invention discloses a die-cutting production line and a die-cutting method for medical rubber tubes. The die-cutting production line includes a manual stacking and conveying station for medical rubber tube integrated connected blank, a receiving station for medical rubber tube integrated connected blank, a transfer station for medical rubber tube integrated connected blank, and a stamping and cutting station, which are arranged in sequence according to the process of medical rubber tube die-cutting operation. A belt conveyor is arranged at the manual stacking and conveying station, a receiving and positioning workbench for receiving the medical rubber tube integrated connected blank from the belt conveyor is arranged at the receiving station for medical rubber tube integrated connected blank, a punching press is arranged at the stamping and cutting station, a stamping and cutting die is arranged on the punching press, and a transfer manipulator for transferring the medical rubber tube integrated connected blank from the receiving and positioning workbench to the stamping and cutting die of the punching press is arranged at the transfer station for medical rubber tube integrated connected blank. The present invention improves the production efficiency of medical rubber tube die-cutting operation and the service life of the die-cutting device.

Description

Technical Field

[0001] The present invention relates to the technical field of medical hose manufacturing, and particularly relates to a die-cutting production line and a die-cutting method for medical hoses. Background Art

[0002] As Figure 7 shown is a medical hose, which is batch-pressed through rubber molding to form a medical hose integrated and connected blank as shown in Figure 8 After batch molding of the medical hoses, a matrix array of medical hoses is formed. Adjacent medical hoses are connected together by thin sheets, and subsequently, the medical hoses need to be cut from the integrated and connected blank by a dedicated die-cutting device.

[0003] The structure of the conventional die-cutting device includes an upper template, a lower template, and a blanking plate. The lower template is densely provided with positioning holes for positioning each medical hose on the medical hose integrated and connected blank, and the upper template is densely provided with stamping cutting heads. The die-cutting device is installed on a punching press. Among them, the upper template is installed on the upper die base of the punching press, the lower template is installed on the lower die base of the punching press, and the blanking plate is installed on the blanking mechanism of the punching press. When in use, the operator manually positions the medical hose integrated and connected blank on the lower template, and then starts the punching press for punching and die-cutting.

[0004] However, the above die-cutting device still has the following disadvantages when in use:

[0005] First, since there are a large number of medical hoses on the medical hose integrated and connected blank, it is not easy to position all the medical hoses on the medical hose integrated and connected blank into the positioning holes of the lower template at one time, and the manual positioning speed is slow, thus greatly reducing the production efficiency of the medical hose die-cutting operation.

[0006] Second, the die-cutting device has a large wear and a short service life. Summary of the Invention

[0007] In order to solve the above problems, the present invention proposes a die-cutting production line and a die-cutting method for medical hoses, aiming to improve the production efficiency of the medical hose die-cutting operation and improve the service life of the die-cutting device. The specific technical solutions are as follows:

[0008] A die-cutting production line for medical rubber tubes, comprising a manual stacking and conveying station for integrated connected blanks of medical rubber tubes, a receiving station for integrated connected blanks of medical rubber tubes, a transfer station for integrated connected blanks of medical rubber tubes, and a stamping and cutting station, which are arranged in sequence according to the process of die-cutting operation of medical rubber tubes. A belt conveyor is arranged on the manual stacking and conveying station. A receiving and positioning workbench for receiving the integrated connected blanks of medical rubber tubes from the belt conveyor is arranged on the receiving station for integrated connected blanks of medical rubber tubes. A punching press is arranged on the stamping and cutting station, and a stamping and cutting die is arranged on the punching press. A transfer manipulator for transferring the integrated connected blanks of medical rubber tubes from the receiving and positioning workbench to the stamping and cutting die of the punching press is arranged on the transfer station for integrated connected blanks of medical rubber tubes.

[0009] Preferably, a conveying station is arranged between the belt conveyor and the receiving and positioning workbench. A conveying device is arranged on the conveying station. The conveying device includes a conveying guide rail spanning above the belt conveyor and the receiving and positioning workbench. A negative pressure suction cup is movably arranged on the conveying guide rail, and the negative pressure suction cup realizes up and down lifting through a lifting mechanism.

[0010] Preferably, the lifting mechanism is a servo electric push rod.

[0011] Preferably, the negative pressure suction cup is connected to a negative pressure generator.

[0012] Preferably, the receiving and positioning workbench is an inclined workbench inclined downward towards the discharge end. A vibrator for realizing the vibrating conveying of the inclined workbench is connected to the inclined workbench. A comb-shaped positioning plate for correcting the position of the integrated connected blanks of medical rubber tubes is overhead arranged above the discharge end part of the inclined workbench. A plurality of parallel and spaced comb teeth are arranged on the comb-shaped positioning plate, and one end of the comb teeth facing the feeding end of the inclined workbench is pointed.

[0013] As a further improvement of the present invention, an intercepting and correcting rod is arranged above the inclined workbench and at a position close to the pointed end of the comb-shaped positioning plate. The intercepting and correcting rod forms a 90-degree right angle with the conveying direction of the inclined workbench, and one end of the intercepting and correcting rod is fixed on the motor shaft of a first corner servo motor.

[0014] In the present invention, the transfer manipulator is a multi-axis articulated manipulator, and a comb-shaped positioning transfer device is arranged at the front end of the multi-axis articulated manipulator.

[0015] In the present invention, the belt conveyor is an intermittent belt conveyor.

[0016] In the present invention, the comb-shaped positioning and transporting device includes a main comb-shaped positioning piece fixedly arranged at the front end of the multi-axis articulated robot, and a secondary comb-shaped positioning piece movably arranged on the lower end face of the main comb-shaped positioning piece. At the same positions on the upper and lower opposite sides of the main comb-shaped positioning piece and the secondary comb-shaped positioning piece, a number of parallel and spaced-apart comb bars are respectively arranged, and the cantilever end of the comb bar is a pointed head. Among them, a number of positioning arc-shaped grooves are spaced apart on one side of the comb bars on the main comb-shaped positioning piece, and a number of positioning arc-shaped grooves are spaced apart on one side of the comb bars on the secondary comb-shaped positioning piece, and the positioning arc-shaped grooves of the comb bars on the main comb-shaped positioning piece and the positioning arc-shaped grooves of the comb bars on the secondary comb-shaped positioning piece are arranged opposite to each other in the translation direction. The secondary comb-shaped positioning piece realizes relative translation with the main comb-shaped positioning piece through a translation mechanism. During translation, the comb bars on the main comb-shaped positioning piece and the secondary comb-shaped positioning piece remain parallel, and the arc-shaped positioning grooves of the respective comb bars on the secondary comb-shaped positioning piece approach the arc-shaped positioning grooves of the respective comb bars on the main comb-shaped positioning piece, so that each medical hose on the integrated connected blank of medical hoses is respectively positioned in a pair of arc-shaped positioning grooves, thereby realizing the precise positioning of the integrated connected blank of medical hoses on the comb-shaped positioning and transporting device.

[0017] In the present invention, the stamping and cutting die includes an upper template fixedly arranged on the upper die base of the punching press, a lower template fixedly arranged on the lower die base of the punching press, and a stripping plate movably arranged up and down on the upper die base of the punching press. The lower template is densely provided with positioning cutting die holes for positioning the outer circle of the medical hose, and a cutting punch is arranged at the position on the upper template opposite to the positioning cutting die holes.

[0018] As a further improvement of the present invention, a vertical pushing device for completely discharging the stamped and cut medical hose downward from the lower template is further arranged on one side of the punching press. The vertical pushing device includes a pushing guide rail arranged on one side of the punching press, a moving seat movably arranged on the pushing guide rail, a cantilevered pushing beam fixedly arranged on the moving seat, a pushing plate arranged at the lower position of the front end of the cantilevered pushing beam, and pushing shaft heads densely arranged on the lower end face of the pushing plate. A number of pushing cylinders connecting the pushing plate are arranged on the cantilevered pushing beam. Among them, the diameter of the pushing shaft head is smaller than the aperture of the positioning cutting die hole on the lower template.

[0019] Preferably, the moving seat realizes the movement of the moving seat on the pushing guide rail through a forward and backward cylinder. When the moving seat moves forward along the pushing guide rail, the pushing plate at the front end of the cantilevered pushing beam can be driven into the gap between the lower template and the stripping plate of the stamping and cutting die on the punching press; when the moving seat moves backward along the pushing guide rail, the pushing plate at the front end of the cantilevered pushing beam withdraws from the gap between the lower template and the stripping plate of the stamping and cutting die on the punching press.

[0020] Preferably, the translation mechanism includes a sliding groove provided on the secondary comb-shaped positioning piece, a sliding key provided on the primary comb-shaped positioning piece and slidably connected to the sliding groove of the secondary comb-shaped positioning piece, a kidney-shaped groove provided on the primary comb-shaped positioning piece, and a second rotation angle servo motor fixed on the secondary comb-shaped positioning piece. An eccentric cam for controlling the translation amount of the secondary comb-shaped positioning piece relative to the primary comb-shaped positioning piece along the direction perpendicular to the comb bar is provided on the motor shaft of the second rotation angle servo motor, and the eccentric cam enters the kidney-shaped groove on the primary comb-shaped positioning piece.

[0021] In the present invention, a waste blowing device is provided on one side of the punching machine, and a waste collection box is provided on the other side of the punching machine; the waste blowing device is composed of a plurality of compressed air nozzles obliquely facing the upper end surface of the lower template.

[0022] Preferably, initial positioning baffles are erected on both sides of the conveyor belt of the belt conveyor, and the initial positioning baffles are inclined at a certain angle towards the outer side of the conveyor belt of the belt conveyor; after the integrated medical rubber tube blank is transported to the belt conveyor, the initial positioning of the integrated medical rubber tube blank is realized through the initial positioning baffles.

[0023] A die-cutting method for a die-cutting production line of a medical rubber tube includes the following steps:

[0024] (1) Manual stacking and feeding: The operator stacks the integrated medical rubber tube blanks of the medical rubber tube one by one onto the belt conveyor, and intermittently transports the integrated medical rubber tube blanks to the position below the negative pressure suction cup of the conveying device through the belt conveyor;

[0025] (2) Conveying and transferring: The conveying device turns on the negative pressure suction cup, and the negative pressure suction cup moves downward to suck the integrated medical rubber tube blank and conveys and transfers it to the receiving and positioning workbench through the conveying guide rail;

[0026] (3) Receiving and positioning: After the integrated medical rubber tube blank is transported and transferred to the receiving and positioning workbench, vibration conveying is achieved through the vibrator set on the receiving and positioning workbench. The integrated medical rubber tube blank is conveyed towards the discharge end of the receiving and positioning workbench. Before reaching the discharge end of the receiving and positioning workbench, it is intercepted by the interception and correction rod. Under the vibration of the receiving and positioning workbench and the interception and blocking effect of the interception and correction rod, one side of the integrated medical rubber tube blank abuts against the interception and correction rod, thus correcting the position of the integrated medical rubber tube blank and creating conditions for the integrated medical rubber tube blank to enter the comb-shaped positioning plate. Then, the interception and correction rod rotates more than 90 degrees away from the integrated medical rubber tube blank through the first rotary servo motor. The integrated medical rubber tube blank that has lost the blocking of the interception and correction rod continues to be conveyed forward under the vibration of the receiving and positioning workbench and enters the comb-shaped positioning plate, achieving accurate positioning of the integrated medical rubber tube blank at the discharge end of the receiving and positioning workbench.

[0027] (4) Manipulator transfer: After the integrated medical rubber tube blank enters the comb-shaped positioning plate, the multi-axis articulated manipulator moves. The comb teeth on the comb-shaped positioning and transfer device at the front end of the multi-axis articulated manipulator are inserted into the gaps between adjacent medical rubber tubes of the integrated medical rubber tube blank. Then, the translation mechanism on the comb-shaped positioning and transfer device moves, causing the auxiliary comb-shaped positioning piece on the comb-shaped positioning and transfer device to translate a certain amount relative to the main comb-shaped positioning piece. As a result, the arc-shaped positioning grooves on one side of the comb teeth of the auxiliary comb-shaped positioning piece approach the arc-shaped positioning grooves on one side of the comb teeth of the main comb-shaped positioning piece, so that each pair of arc-shaped positioning grooves forms a positioning hole for medical rubber tube positioning. In this way, each medical rubber tube on the integrated medical rubber tube blank is accurately positioned in the positioning hole. After the integrated medical rubber tube blank is accurately positioned, it is transferred to the stamping and cutting die by the multi-axis articulated manipulator and accurately positioned on the lower template of the stamping and cutting die.

[0028] (5) Stamping and cutting: Start the punching press for stamping, so that the cutting punch on the upper template enters the positioning cutting die hole on the lower template, and the medical rubber tubes on the integrated medical rubber tube blank are cut and separated from the thin sheet on the integrated medical rubber tube blank.

[0029] (6) Pushing material: Start the upper and lower pushing device on one side of the punching press. Driven by the forward and backward air cylinder, the moving seat moves forward. The pushing plate located below the front end of the cantilever pushing beam enters above the lower template of the stamping and cutting die of the punching press. After arriving, the pushing air cylinder acts. Under the action of the pushing air cylinder, the pushing plate drives the pushing shaft head to move downward together. The pushing shaft head pushes the medical rubber tube remaining in the positioning cutting die hole downward and falls into the finished product collection box below the punching press.

[0030] (7) Blowing the waste: Turn on the waste blowing device on one side of the punching machine, and blow the thin waste remaining on the lower template into the waste collection box on the other side of the punching machine through the compressed air nozzle.

[0031] The beneficial effects of the present invention are as follows:

[0032] First, the die-cutting production line and die-cutting method of a medical rubber tube of the present invention realize the full-automatic die-cutting of medical rubber tubes, with high production efficiency and good die-cutting quality.

[0033] Second, in the die-cutting production line and die-cutting method of a medical rubber tube of the present invention, an interception and correction rod is arranged above the inclined workbench and at the pointed end part close to the comb-shaped positioning plate, ensuring that the integrated connected blank of the medical rubber tube can smoothly enter the comb-shaped positioning plate, thereby improving the reliability of the operation of the die-cutting production line.

[0034] Third, in the die-cutting production line and die-cutting method of a medical rubber tube of the present invention, the comb-shaped positioning and transporting device at the front end of the transfer manipulator adopts a double-layer comb-shaped positioning piece structure, which is compact in structure and enables accurate positioning of the integrated connected blank of the medical rubber tube, so as to ensure that the integrated connected blank of the medical rubber tube can be smoothly positioned into the positioning cutting die holes of the lower template, thereby further improving the reliability of the operation of the die-cutting production line.

[0035] Fourth, in the die-cutting production line and die-cutting method of a medical rubber tube of the present invention, short-stroke die-cutting is adopted. The die-cutting stroke of the punch entering the positioning cutting die hole only cuts the thin part of the integrated connected blank of the medical rubber tube, and does not deeply enter the positioning cutting die hole. After die-cutting, the medical rubber tube remaining in the stamping and cutting die is completely unloaded by using the upper and lower pushing device, thereby greatly reducing the wear of the punch and the positioning cutting die hole of the stamping and cutting die, and thus greatly improving the service life of the stamping and cutting die. Description of the Drawings

[0036] Figure 1 is a schematic structural diagram of a die-cutting production line of a medical rubber tube of the present invention;

[0037] Figure 2 is Figure 1 a schematic structural diagram (left view) of the punching machine in

[0038] Figure 3 a schematic structural diagram of the comb-shaped positioning plate;

[0039] Figure 4 a schematic structural diagram of the comb-shaped positioning and transporting device;

[0040] Figure 5 is Figure 4 a schematic structural diagram (top view) of the main comb-shaped positioning piece in

[0041] Figure 6 is Figure 4 a schematic structural view (top view) of the auxiliary comb-shaped positioning piece in

[0042] Figure 7 a schematic structural view of a medical rubber tube;

[0043] Figure 8 a schematic structural view of an integrated connected blank of medical rubber tubes batch-pressed using a rubber pressing film.

[0044] In the figure: 1. Medical rubber tube, 2. Integrated connected blank of medical rubber tubes, 3. Manual stacking and conveying station, 4. Receiving and positioning workbench for integrated connected blank of medical rubber tubes, 5. Transfer station for integrated connected blank of medical rubber tubes, 6. Stamping and cutting station, 7. Belt conveyor, 8. Receiving and positioning workbench, 9. Punch press, 10. Stamping and cutting die, 11. Transfer manipulator, 12. Conveying station, 13. Conveying device, 14. Conveying guide rail, 15. Negative pressure suction cup, 16. Lifting mechanism, 17. Vibrator, 18. Comb-shaped positioning plate, 19. Comb strip, 20. Pointed head, 21. Intercepting and correcting rod, 22. First corner servo motor, 23. Comb-shaped positioning transfer device, 24. Main comb-shaped positioning piece, 25. Auxiliary comb-shaped positioning piece, 26. Translation mechanism, 27. Arc-shaped positioning groove, 28. Upper die holder, 29. Upper template, 30. Lower die holder, 31. Lower template, 32. Stripping plate, 33. Positioning and cutting die hole, 34. Cutting punch, 35. Up and down pushing device, 36. Pushing guide rail, 37. Cantilever type pushing beam, 38. Forward and backward air cylinder, 39. Pushing plate, 40. Pushing shaft head, 41. Pushing air cylinder, 42. Waste collection box, 43. Compressed air nozzle, 44. Finished product collection box, 45. Piston rod of the forward and backward air cylinder, 46. Moving seat, 47. Sliding key, 48. Kidney-shaped groove, 49. Second corner servo motor, 50. Eccentric cam. Specific Embodiments

[0045] The following further describes the specific embodiments of the present invention in conjunction with the drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.

[0046] Embodiment 1:

[0047] As Figures 1 to 8The following shows an embodiment of a die-cutting production line for a medical rubber tube of the present invention, including a manual stacking and conveying station 3 for a medical rubber tube integrated connected blank 2, a receiving station 4 for the medical rubber tube integrated connected blank, a transfer station 5 for the medical rubber tube integrated connected blank, and a stamping and cutting station 6 arranged in sequence according to the die-cutting operation process of the medical rubber tube 1. A belt conveyor 7 is arranged on the manual stacking and conveying station 3, a receiving and positioning workbench 8 for receiving the medical rubber tube integrated connected blank 2 from the belt conveyor 7 is arranged on the receiving station 4 for the medical rubber tube integrated connected blank, a punching press 9 is arranged on the stamping and cutting station 6, a stamping and cutting die 10 is arranged on the punching press 9, and a transfer manipulator 11 for transferring the medical rubber tube integrated connected blank 2 from the receiving and positioning workbench 8 to the stamping and cutting die 10 of the punching press 9 is arranged on the transfer station 5 for the medical rubber tube integrated connected blank.

[0048] Preferably, a conveying station 12 is arranged between the belt conveyor 7 and the receiving and positioning workbench 8. A conveying device 13 is arranged on the conveying station 12. The conveying device 13 includes a conveying guide rail 14 spanning above the belt conveyor 7 and the receiving and positioning workbench 8. A negative pressure suction cup 15 is movably arranged on the conveying guide rail 14, and the negative pressure suction cup 15 realizes up and down lifting through a lifting mechanism 16.

[0049] Preferably, the lifting mechanism 16 is a servo electric push rod.

[0050] Preferably, the negative pressure suction cup 15 is connected to a negative pressure generator.

[0051] Preferably, the receiving and positioning workbench 8 is an inclined workbench 8 inclined downward toward the discharge end. A vibrator 17 for realizing the vibrating conveying of the inclined workbench 8 is connected to the inclined workbench 8. A comb-shaped positioning plate 18 for correcting the position of the medical rubber tube integrated connected blank 2 is arranged overhead above the discharge end of the inclined workbench 8. A number of parallel and spaced comb teeth 19 are arranged on the comb-shaped positioning plate 18, and one end of the comb tooth 10 facing the feeding end of the inclined workbench 8 is a pointed head 20.

[0052] As a further improvement of this embodiment, an intercepting and correcting rod 21 is arranged above the inclined workbench 8 and at a position close to the pointed head 20 of the comb-shaped positioning plate 18. The intercepting and correcting rod 21 forms a 90-degree right angle with the conveying direction of the inclined workbench 8, and one end of the intercepting and correcting rod 21 is fixed on the motor shaft of a first corner servo motor 22.

[0053] In this embodiment, the transfer manipulator 11 is a multi-axis articulated manipulator 11, and a comb-shaped positioning transfer device 23 is arranged at the front end of the multi-axis articulated manipulator 11.

[0054] In this embodiment, the belt conveyor 7 is an intermittent belt conveyor.

[0055] In this embodiment, the comb-shaped positioning and transfer device 23 includes a main comb-shaped positioning piece 24 fixedly arranged at the front end of the multi-joint manipulator 11, and a secondary comb-shaped positioning piece 25 movably arranged on the lower end surface of the main comb-shaped positioning piece 24. A number of parallel and spaced comb teeth 19 are respectively arranged at the same position where the main comb-shaped positioning piece 24 and the secondary comb-shaped positioning piece 25 face each other up and down. The cantilever end of the comb tooth 19 is a pointed head. Among them, a number of positioning arc-shaped grooves 27 are arranged at intervals on one side edge of the comb teeth 19 on the main comb-shaped positioning piece 24, and a number of positioning arc-shaped grooves 27 are arranged at intervals on one side edge of the comb teeth 19 on the secondary comb-shaped positioning piece 25. And the positioning arc-shaped grooves 27 of the comb teeth 19 on the main comb-shaped positioning piece 24 and the positioning arc-shaped grooves 27 of the comb teeth 19 on the secondary comb-shaped positioning piece 25 are arranged facing each other in the translation direction. The secondary comb-shaped positioning piece 25 realizes relative translation with the main comb-shaped positioning piece 24 through a translation mechanism 26. When translating, the comb teeth 19 on the main comb-shaped positioning piece 24 and the secondary comb-shaped positioning piece 25 remain parallel, and the arc-shaped positioning grooves 27 of each comb tooth 19 on the secondary comb-shaped positioning piece 25 approach the arc-shaped positioning grooves 27 of each comb tooth 19 on the main comb-shaped positioning piece 24, so that each medical hose 1 on the integrated medical hose blank 2 is respectively positioned in a pair of arc-shaped positioning grooves 27, thereby realizing the precise positioning of the integrated medical hose blank 2 on the comb-shaped positioning and transfer device 23.

[0056] In this embodiment, the stamping and cutting die 10 includes an upper template 29 fixed on the upper die base 28 of the punching press 9, a lower template 31 fixed on the lower die base 30 of the punching press 9, and a stripper plate 32 movably arranged up and down on the upper die base 28 of the punching press 9. A number of positioning and cutting die holes 33 for positioning the outer circle of the medical hose 1 are densely arranged on the lower template 31, and a cutting punch 34 is arranged at the position on the upper template 29 facing the positioning and cutting die holes 33.

[0057] As a further improvement of this embodiment, one side of the punch press 9 is also provided with an upper and lower pushing device 35 for completely unloading the medical hose 1 after punching and cutting from the lower template 31 downward, and the upper and lower pushing device 35 includes a pushing guide rail 36 arranged on one side of the punch press 9, a moving seat 46 movably arranged on the pushing guide rail 36, a cantilevered pushing beam 37 fixed on the moving seat 46, a pushing plate 39 arranged at a position below the front end of the cantilevered pushing beam 37, and a pushing shaft head 40 densely arranged on the lower end surface of the pushing plate 39, and a plurality of pushing cylinders 41 connected to the pushing plate 39 are arranged on the cantilevered pushing beam 37; wherein, the diameter of the pushing shaft head 40 is smaller than the aperture of the positioning cutting die hole 33 on the lower template 31.

[0058] Preferably, the moving seat 46 is moved on the pushing guide rail 36 by the advancing and retreating cylinder 38. When the moving seat 46 moves forward along the pushing guide rail 36, it can drive the pushing plate 39 at the front end of the cantilevered pushing beam 37 to enter the gap between the lower template 31 and the unloading plate 32 of the punching and cutting mold 10 on the punch press 9; when the moving seat 46 retreats along the pushing guide rail 36, the pushing plate 39 at the front end of the cantilevered pushing beam 37 withdraws from the gap between the lower template 31 and the unloading plate 32 of the punching and cutting mold 10 on the punch press 9.

[0059] Preferably, the translation mechanism 26 includes a sliding groove arranged on the auxiliary comb-like positioning piece 25, a sliding key 47 arranged on the main comb-like positioning piece 24 and slidably connected to the sliding groove of the auxiliary comb-like positioning piece 25, a waist-shaped groove 48 arranged on the main comb-like positioning piece 24, and a second rotation angle servo motor 49 fixed on the auxiliary comb-like positioning piece 25. An eccentric cam 50 for controlling the translation amount of the auxiliary comb-like positioning piece 25 relative to the main comb-like positioning piece 24 in a direction perpendicular to the comb strip 19 is arranged on the motor shaft of the second rotation angle servo motor 49, and the eccentric cam 50 enters into the waist-shaped groove 48 on the main comb-like positioning piece 24.

[0060] In this embodiment, a waste blower is provided on one side of the punch press 9 , and a waste collection box 42 is provided on the other side of the punch press 9 ; the waste blower is composed of a number of compressed air blowing nozzles 43 obliquely facing the upper end surface of the lower mold plate 31 .

[0061] Preferably, initial positioning baffles are erected on both sides of the conveyor belt of the belt conveyor 7, and the initial positioning baffles are inclined at a certain angle toward the outer side of the conveyor belt of the belt conveyor 7; after the medical hose integrated joint blank 2 is transferred to the belt conveyor 7, the initial positioning of the medical hose integrated joint blank 2 is achieved through the initial positioning baffles.

[0062] Embodiment 2:

[0063] Adopt the die-cutting method of a die-cutting production line for a medical rubber tube in Embodiment 1, including the following steps:

[0064] (1) Manual stacking and feeding: The operator stacks the integrated connected blank 2 of the medical rubber tube 1 of the medical rubber tube one by one onto the belt conveyor 7, and intermittently conveys the integrated connected blank 2 of the medical rubber tube to the position below the negative pressure suction cup 15 of the conveying device 13 through the belt conveyor 7;

[0065] (2) Conveying and transferring: The conveying device 13 turns on the negative pressure suction cup 15, and the negative pressure suction cup 15 moves downward to suck the integrated connected blank 2 of the medical rubber tube and conveys and transfers it to the receiving and positioning workbench 8 through the conveying guide rail 14;

[0066] (3) Receiving and positioning: After the integrated connected blank 2 of the medical rubber tube is conveyed and transferred to the receiving and positioning workbench 8, vibration conveying is realized through the vibrator 17 arranged on the receiving and positioning workbench 8. The integrated connected blank 2 of the medical rubber tube is conveyed towards the discharge end of the receiving and positioning workbench 8 and is intercepted by the intercepting and correcting rod 21 before reaching the discharge end of the receiving and positioning workbench 8. Under the vibration of the receiving and positioning workbench 8 and the intercepting and blocking action of the intercepting and correcting rod 21, one side of the integrated connected blank 2 of the medical rubber tube abuts against the intercepting and correcting rod 21, thereby realizing the position correction of the integrated connected blank 2 of the medical rubber tube, creating conditions for the integrated connected blank 2 of the medical rubber tube to enter the comb-shaped positioning plate 18; Then, the intercepting and correcting rod 21 rotates more than 90 degrees in the direction away from the integrated connected blank 2 of the medical rubber tube through the first corner servo motor 22. The integrated connected blank 2 of the medical rubber tube without the blocking of the intercepting and correcting rod 21 continues to be conveyed forward under the action of the vibration of the receiving and positioning workbench 8 and enters the comb-shaped positioning plate 18, realizing the accurate positioning of the integrated connected blank 2 of the medical rubber tube at the discharge end of the receiving and positioning workbench 8;

[0067] (4) Manipulator Transfer: After the medical hose integrated connected blank 2 enters the comb-shaped positioning plate 18, the multi-axis articulated manipulator 11 operates. The comb teeth on the comb-shaped positioning transfer device 23 at the front end of the multi-axis articulated manipulator 11 are inserted into the gaps between adjacent medical hoses 1 of the medical hose integrated connected blank 2. Then, the translation mechanism 26 on the comb-shaped positioning transfer device 23 operates, causing the auxiliary comb-shaped positioning piece 25 on the comb-shaped positioning transfer device 23 to translate a certain amount relative to the main comb-shaped positioning piece 24. As a result, the arc-shaped positioning grooves 27 on the side of the comb teeth 19 of the auxiliary comb-shaped positioning piece 25 approach the arc-shaped positioning grooves 27 on the side of the comb teeth 19 of the main comb-shaped positioning piece 24. Thus, each pair of arc-shaped positioning grooves 27 forms a positioning hole for positioning the medical hose 1, and each medical hose 1 on the medical hose integrated connected blank 2 is accurately positioned in the positioning hole. After the medical hose integrated connected blank 2 is accurately positioned, it is transferred by the multi-axis articulated manipulator 11 to the stamping and cutting die 10 and accurately positioned on the lower template 31 of the stamping and cutting die 10.

[0068] (5) Stamping and Cutting: The punching press 9 is started for stamping, so that the cutting punch 34 on the upper template 29 enters the positioning cutting die hole 33 of the lower template 31, and the medical hoses 1 on the medical hose integrated connected blank 2 are cut and separated from the thin sheet on the medical hose integrated connected blank 2.

[0069] (6) Pushing Material: The up-and-down pushing device 35 located on one side of the punching press 9 is started. Driven by the advancing and retracting air cylinder 38, the moving seat 46 moves forward. The pushing plate 39 located below the front end of the cantilevered pushing beam 37 enters above the lower template 31 of the stamping and cutting die 10 of the punching press 9. After arriving, the pushing air cylinder 41 operates. Under the action of the pushing air cylinder 41, the pushing plate 39 drives the pushing shaft head 40 to move downward together. The pushing shaft head 40 pushes the medical hose 1 remaining in the positioning cutting die hole 33 downward and into the finished product collection box 44 below the punching press 9.

[0070] (7) Blowing Material: The waste blowing device on one side of the punching press 9 is started, and the thin sheet waste remaining on the lower template 31 is blown into the waste collection box 42 on the other side of the punching press 9 through the compressed air nozzle 43.

[0071] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A die-cutting production line for medical rubber tubes, characterized in that, It includes a manual stacking and conveying station for medical hose integrated connected blank, a receiving station for medical hose integrated connected blank, a transfer station for medical hose integrated connected blank, and a stamping and cutting station arranged in sequence according to the process of medical hose die-cutting operation. A belt conveyor is arranged at the manual stacking and conveying station. A receiving and positioning workbench for receiving the medical hose integrated connected blank from the belt conveyor is arranged at the receiving station for medical hose integrated connected blank. A punching press is arranged at the stamping and cutting station, and a stamping and cutting die is arranged on the punching press. A transfer manipulator for transferring the medical hose integrated connected blank from the receiving and positioning workbench to the stamping and cutting die of the punching press is arranged at the transfer station for medical hose integrated connected blank; A conveying station is arranged between the belt conveyor and the receiving and positioning workbench, and a conveying device is arranged at the conveying station; The transfer manipulator is a multi-axis articulated manipulator, and a comb-shaped positioning transfer device is arranged at the front end of the multi-axis articulated manipulator; The comb-shaped positioning transfer device includes a main comb-shaped positioning piece fixedly arranged at the front end of the multi-axis articulated manipulator, and a secondary comb-shaped positioning piece movably arranged on the lower end surface of the main comb-shaped positioning piece. A number of parallel and spaced comb bars are respectively arranged at the same position where the main comb-shaped positioning piece and the secondary comb-shaped positioning piece are vertically aligned. The cantilever end of the comb bar is a pointed head; Among them, a number of positioning arc grooves are spacedly arranged on one side of the comb bars on the main comb-shaped positioning piece, and a number of positioning arc grooves are spacedly arranged on one side of the comb bars on the secondary comb-shaped positioning piece. And the positioning arc grooves of the comb bars on the main comb-shaped positioning piece are arranged facing each other in the translation direction with the positioning arc grooves of the comb bars on the secondary comb-shaped positioning piece; The secondary comb-shaped positioning piece realizes relative translation with the main comb-shaped positioning piece through a translation mechanism. When translating, the comb bars on the main comb-shaped positioning piece and the secondary comb-shaped positioning piece remain parallel, and the arc-shaped positioning grooves of the respective comb bars on the secondary comb-shaped positioning piece approach the arc-shaped positioning grooves of the respective comb bars on the main comb-shaped positioning piece, so that each medical hose on the medical hose integrated connected blank is respectively positioned in a pair of arc-shaped positioning grooves, thereby realizing the precise positioning of the medical hose integrated connected blank on the comb-shaped positioning transfer device.

2. The die-cutting production line of a medical rubber tube according to claim 1, wherein, The conveying device includes a conveying guide rail spanning above the belt conveyor and the receiving and positioning workbench. A negative pressure suction cup is movably arranged on the conveying guide rail, and the negative pressure suction cup realizes up and down lifting through a lifting mechanism.

3. The die-cutting production line of a medical rubber tube according to claim 1, characterized in that The receiving and positioning workbench is an inclined workbench inclined downward towards the discharge end, and a vibrator for realizing the vibrating conveying of the inclined workbench is connected to the inclined workbench. A comb-shaped positioning plate for correcting the position of the medical hose integrated connected blank is overhead arranged above the discharge end part of the inclined workbench; A number of parallel and spaced comb bars are arranged on the comb-shaped positioning plate, and the end of the comb bar facing the feeding end of the inclined workbench is a pointed head.

4. The die-cutting production line of a medical rubber tube according to claim 3, characterized in that, Above the inclined workbench and at a position near the pointed end of the comb-shaped positioning plate, an interception and correction rod is provided. The interception and correction rod forms a 90-degree right angle with the conveying direction of the inclined workbench, and one end of the interception and correction rod is fixed on the motor shaft of the first rotation angle servo motor.

5. The die-cutting production line of a medical rubber tube according to claim 1, wherein, The stamping and cutting die includes an upper template fixed on the upper die holder of the punching press, a lower template fixed on the lower die holder of the punching press, and a stripping plate movably arranged up and down on the upper die holder of the punching press. The lower template is densely provided with positioning and cutting die holes for positioning the outer circle of the medical hose. A cutting punch is arranged on the upper template at a position opposite to the positioning and cutting die holes.

6. The die-cutting production line of a medical rubber tube according to claim 5, characterized in that, On one side of the punching press, an up-and-down pushing device is further provided for completely discharging the stamped and cut medical hose downward from the lower template. The up-and-down pushing device includes a pushing guide rail arranged on one side of the punching press, a moving seat movably arranged on the pushing guide rail, a cantilever-type pushing beam fixed on the moving seat, a pushing plate arranged at a position below the front end of the cantilever-type pushing beam, and pushing shaft heads densely arranged on the lower end surface of the pushing plate. A plurality of pushing cylinders connecting the pushing plate are arranged on the cantilever-type pushing beam; wherein, the diameter of the pushing shaft heads is smaller than the aperture of the positioning and cutting die holes on the lower template.

7. The die-cutting production line of a medical rubber tube according to claim 5, characterized in that A waste blowing device is arranged on one side of the punching press, and a waste collection box is arranged on the other side of the punching press; the waste blowing device is composed of a plurality of compressed air nozzles obliquely facing the upper end surface of the lower template.

8. The die-cutting method of a die-cutting production line for a medical rubber tube according to any one of claims 1 to 7, characterized in that, Including the following steps: (1) Manual stacking and feeding: The operator stacks the integrated blank of the medical hoses of the medical hoses one by one onto the belt conveyor, and intermittently conveys the integrated blank of the medical hoses to a position below the negative pressure suction cup of the conveying device through the belt conveyor. (2) Conveying and transferring: The conveying device turns on the negative pressure suction cup, and the negative pressure suction cup moves downward to suck the integrated blank of the medical hoses and conveys and transfers it to the receiving and positioning workbench through the conveying guide rail. (3) Receiving and positioning: After the integrated blank of the medical hoses is conveyed and transferred to the receiving and positioning workbench, vibration conveying is realized through the vibrator arranged on the receiving and positioning workbench. The integrated blank of the medical hoses is conveyed towards the discharging end of the receiving and positioning workbench and is intercepted by the interception and correction rod before reaching the discharging end of the receiving and positioning workbench. Under the vibration of the receiving and positioning workbench and the interception and blocking action of the interception and correction rod, one side of the integrated blank of the medical hoses abuts against the interception and correction rod, thereby realizing the position correction of the integrated blank of the medical hoses and creating conditions for the integrated blank of the medical hoses to enter the comb-shaped positioning plate; then, the interception and correction rod rotates more than 90 degrees away from the integrated blank of the medical hoses through the first rotation angle servo motor. The integrated blank of the medical hoses that has lost the blocking of the interception and correction rod continues to be conveyed forward under the action of the vibration of the receiving and positioning workbench and enters the comb-shaped positioning plate, realizing the accurate positioning of the integrated blank of the medical hoses at the discharging end of the receiving and positioning workbench. (4)Manipulator transfer: After the medical rubber tube integrated connected blank enters the comb-shaped positioning plate, the multi-axis joint manipulator acts. Each comb on the comb-shaped positioning transfer device at the front end of the multi-axis joint manipulator is inserted into the gap between adjacent medical rubber tubes of the medical rubber tube integrated connected blank. Then, the translation mechanism on the comb-shaped positioning transfer device acts, causing the auxiliary comb-shaped positioning piece on the comb-shaped positioning transfer device to translate a certain amount relative to the main comb-shaped positioning piece. As a result, the arc-shaped positioning grooves on the side of the comb of the auxiliary comb-shaped positioning piece approach the arc-shaped positioning grooves on the side of the comb of the main comb-shaped positioning piece, so that each pair of arc-shaped positioning grooves forms a positioning hole for positioning the medical rubber tube. In this way, each medical rubber tube on the medical rubber tube integrated connected blank is accurately positioned in the positioning hole. After the medical rubber tube integrated connected blank is accurately positioned, it is transferred to the stamping and cutting die by the multi-axis joint manipulator and accurately positioned on the lower template of the stamping and cutting die; (5)Stamping and cutting: Start the punching press for stamping, so that the cutting punch on the upper template enters the positioning cutting die hole on the lower template, and the medical rubber tubes on the medical rubber tube integrated connected blank are cut and separated from the thin sheet on the medical rubber tube integrated connected blank; (6)Pushing material: Start the up and down pushing device on one side of the punching press. Driven by the advancing and retracting air cylinder, the moving seat moves forward. The pushing plate located below the front end of the cantilever pushing beam enters above the lower template of the stamping and cutting die of the punching press. After reaching the position, the pushing air cylinder acts. Under the action of the pushing air cylinder, the pushing plate drives the pushing shaft head to move downward together. The pushing shaft head pushes the medical rubber tube remaining in the positioning cutting die hole downward and falls into the finished product collection box below the punching press; (7)Blowing material: Start the waste blowing device on one side of the punching press, and blow the thin sheet waste remaining on the lower template into the waste collection box on the other side of the punching press through the compressed air nozzle.

Images