A medical breathing mask forming production line and forming method

Abstract

The present invention relates to the technical field of injection molding, and discloses a medical breathing mask molding production line and a molding method, which solve the problem that when the staff is relatively close to the mold and directly takes the breathing mask, it is easy to be dangerous. It includes a frame, on the top of the frame is fixedly connected with a mounting frame, the mounting frame is fixedly installed with a hydraulic telescopic rod, the telescopic end of the hydraulic telescopic rod is fixedly connected with a first injection molding mold, the mounting frame is fixedly installed with a second injection molding mold, the first injection molding mold is equipped with an ejection assembly for ejecting the molded part, on the frame is rotatably connected with a driven roller and a driving roller, the driven roller and the driving roller are connected by a conveyor belt, both ends of the driving roller are respectively fixedly sleeved with a first gear, and on both sides of the frame are respectively provided with a first movable seat; the breathing mask can be conveyed from below the first injection molding mold and the second injection molding mold to a preset position, improving safety and facilitating the blanking of the molded part.

Description

Technical Field

[0001] The present invention belongs to the technical field of injection molding, and specifically relates to a medical breathing mask molding production line and a molding method. Background Art

[0002] Respiratory masks are used in cooperation with oxygen and other equipment to assist patients in breathing. Currently, medical respiratory masks are generally manufactured by injection molding with two molds. After injection molding, the two molds are separated by a driving member, and then the molded respiratory mask is taken off.

[0003] However, it is worth considering that the molded respiratory mask is located between the two molds. When a malfunction occurs in the opening and closing of the two molds, the staff is relatively close to the molds, and it is easy to be dangerous when directly taking the respiratory mask, which poses a certain risk and is not convenient for popularization and use.

[0004] Therefore, in order to solve the above problems, the emergence of a related facility that better meets the usage requirements is needed. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a medical breathing mask molding production line and a molding method, effectively solving the problem that the staff is relatively close to the molds and it is easy to be dangerous when directly taking the respiratory mask in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A medical breathing mask molding production line includes a frame. A mounting frame is fixedly connected to the top of the frame. A hydraulic telescopic rod is fixedly installed on the mounting frame. The telescopic end of the hydraulic telescopic rod is fixedly connected to a first injection molding mold. A second injection molding mold is fixedly installed on the mounting frame. The first injection molding mold is equipped with an ejection assembly for ejecting the molded part. A driven roller and a driving roller are rotatably connected to the frame. The driven roller and the driving roller are connected by a conveyor belt. First gears are respectively fixedly sleeved at both ends of the driving roller. First movable seats are respectively arranged on both sides of the frame. A first toothed plate adapted to the first gear is fixedly installed on the first movable seat. The first injection molding mold is equipped with a height adjustment structure adapted to the first movable seat. The first movable seat is equipped with a correction mechanism adapted to the driving roller.

[0007] Preferably, the height adjustment structure includes first connecting plates respectively fixedly installed on both sides of the first injection molding mold. The bottom of the first connecting plate is fixedly connected to a first prism. And the two first prisms respectively penetrate through the two first movable seats. The bottom end of the first prism is fixedly connected to a base. A magnetic attraction member adapted to the first toothed plate is installed on the base. The base and the first movable seat are connected by a first compression spring. A stop ring in contact with the top of the first movable seat is fixedly sleeved on the outer part of the first prism. The frame is equipped with a supporting unit adapted to the first movable seat.

[0008] Preferably, the magnetic attraction member includes an iron column fixedly installed on the top of the base, and a first magnet block fixedly connected to the bottom of the first toothed plate and adapted to the iron column.

[0009] Preferably, the dragging unit includes a fixed column fixedly installed on the side of the first movable seat away from the first toothed plate. Protective covers are respectively fixedly connected to both sides of the frame. The protective covers are fixedly connected with two support blocks, and the support blocks are provided with inclined surfaces adapted to the fixed column.

[0010] Preferably, the correction mechanism includes a second connecting plate fixedly installed on the first movable seat. One end of the second connecting plate away from the first movable seat is fixedly connected with a reset box. A first rotating shaft is rotatably connected to the reset box. Both ends of the driving roller are fixedly connected with two support parts. The top end of the first rotating shaft is fixedly connected with a dial plate adapted to the support parts. The reset box is provided with a rotary reset unit adapted to the first rotating shaft, and the frame is provided with a magnetic attraction support adapted to the support parts.

[0011] Preferably, the rotary reset unit includes a second gear fixedly sleeved outside the first rotating shaft, and the second gear is located inside the reset box. A second toothed plate meshing with the second gear is arranged inside the reset box. The second toothed plate is fixedly installed with a second movable seat. One side of the second movable seat away from the second toothed plate is fixedly connected with a second prism. A support plate is slidably sleeved outside the second prism. The support plate is fixedly connected with the reset box. The support plate is in contact with the second movable seat. One end of the second prism away from the second toothed plate is fixedly connected with a fixed disk. A second compression spring is sleeved outside the second prism, and both ends of the second compression spring are respectively fixedly connected with the fixed disk and the support plate.

[0012] Preferably, the magnetic attraction support includes second rotating shafts respectively rotatably installed on both sides of the frame. The second rotating shafts are fixedly installed with stop plates located above the driving roller. The length of the stop plate below the second rotating shaft is greater than the length of the stop plate above the second rotating shaft, and the stop plate is located on the side of the support part facing the first movable seat. The top end of the stop plate is fixedly connected with a second magnet block, and the second magnet block is located on the side of the stop plate away from the support part. An iron plate is in contact with the side of the second magnet block away from the stop plate, and the iron plate is fixedly connected with the frame.

[0013] Preferably, the ejection assembly includes a third movable seat arranged on the side of the first injection molding die away from the second injection molding die. The third movable seat is fixedly installed with a plurality of ejector rods adapted to the cavity of the first injection molding die. The third movable seat and the first injection molding die are connected by a plurality of third compression springs. The first injection molding die is provided with a positioning unit adapted to the third movable seat.

[0014] Preferably, the positioning unit includes a guide post fixedly installed on the side of the first injection molding die away from the second injection molding die. A guide sleeve is slidably sleeved outside the guide post. The guide sleeve is fixedly connected to the third movable seat. A limiting hole is formed in the inner wall of the guide sleeve. A limiting block is arranged in the limiting hole, and the limiting block is fixedly connected to the guide post.

[0015] The present invention also provides a method for forming a medical breathing mask, which uses the medical breathing mask forming production line as described above, and includes the following steps:

[0016] Step 1: After the first injection molding die and the second injection molding die are closed and the breathing mask injection molding is completed, the first injection molding die is driven by a hydraulic telescopic rod to move away from the second injection molding die.

[0017] Step 2: The formed breathing mask is ejected from the first injection molding die by an ejection assembly. The ejected breathing mask falls onto the conveyor belt. While the first injection molding die moves, the first injection molding die drives the first movable seat and the first toothed plate to move synchronously through a height adjustment structure.

[0018] Step 3: The first movable seat corrects the positions of the driving roller and the first gear through a correction mechanism. The teeth on the first toothed plate are engaged with the teeth on the first gear. The first toothed plate drives the first gear and the driving roller to rotate, and the driving roller drives the conveyor belt to move, so that the conveyor belt drives the breathing mask to move.

[0019] Step 4: When the hydraulic telescopic rod drives the first injection molding die to move in the reverse direction, the height adjustment structure drives the first movable seat and the first toothed plate to move downward, so that the first toothed plate releases the meshing relationship with the first gear until the first injection molding die returns to the initial position, and then the next round of injection molding processing can be started.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The formed breathing mask is ejected from the first injection molding die by an ejection assembly. The ejected breathing mask drops onto the conveyor belt. While the first injection molding die moves, the first injection molding die drives the first movable seat and the first toothed plate to move synchronously through a height adjustment structure. The first movable seat corrects the positions of the driving roller and the first gear through a correction mechanism. The teeth on the first toothed plate mesh with the teeth on the first gear. The first toothed plate drives the first gear and the driving roller to rotate, and the driving roller drives the conveyor belt to move, so as to drive the breathing mask to move. When the hydraulic telescopic rod drives the first injection molding die to move in the reverse direction, the height adjustment structure drives the first movable seat and the first toothed plate to move downward, so that the first toothed plate disengages from the first gear until the first injection molding die returns to the initial position, and then the next round of injection molding processing can be started. During the opening and closing of the first injection molding die and the second injection molding die, the breathing mask can be conveyed from below the first injection molding die and the second injection molding die to a preset position, which improves safety and facilitates the blanking of the formed parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention.

[0023] In the drawings:

[0024] Figure 1 is a schematic structural diagram of the whole of the present invention;

[0025] Figure 2 For the present invention Figure 1 is a partial enlarged schematic diagram of part A in;

[0026] Figure 3 is a schematic structural diagram of the ejection assembly of the present invention;

[0027] Figure 4 is a schematic structural diagram of the third movable seat of the present invention;

[0028] Figure 5 is a schematic structural diagram of the magnetic part of the present invention;

[0029] Figure 6 is a schematic structural diagram of the protective cover of the present invention;

[0030] Figure 7 is a schematic structural diagram of the interior of the reset box of the present invention;

[0031] Figure 8 is a schematic structural diagram of the second movable seat of the present invention.

[0032] In the figure: 1, frame; 2, driven roller; 3, driving roller; 4, conveyor belt; 5, mounting bracket; 6, first injection molding die; 7, second injection molding die; 8, hydraulic telescopic rod; 9, first gear; 10, first toothed plate; 11, first movable seat; 12, first prism; 13, first connecting plate; 14, base; 15, first compression spring; 16, stop ring; 17, iron column; 18, first magnet block; 19, protective cover; 20, fixed column; 21, support block; 22, reset box; 23, first rotating shaft; 24, dialing plate; 25, support portion; 26, stop plate; 27, second rotating shaft; 28, iron plate; 29, second magnet block; 30, second gear; 31, second toothed plate; 32, second movable seat; 33, second prism; 34, support plate; 35, fixed disk; 36, second compression spring; 37, third movable seat; 38, ejector rod; 39, third compression spring; 40, guide post; 41, guide sleeve; 42, limit hole; 43, limit block; 44, second connecting plate. Detailed implementation manners

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Embodiment 1, consists of Figure 1 , Figure 2 and Figure 5Provided, the present invention includes a frame 1. A mounting bracket 5 is fixedly connected to the top of the frame 1. The mounting bracket 5 is fixedly installed with a hydraulic telescopic rod 8. The telescopic end of the hydraulic telescopic rod 8 is fixedly connected to a first injection molding die 6. The mounting bracket 5 is fixedly installed with a second injection molding die 7. The first injection molding die 6 is equipped with an ejection assembly for ejecting the molded part. A driven roller 2 and a driving roller 3 are rotatably connected to the frame 1. The driven roller 2 and the driving roller 3 are connected by a conveyor belt 4. First gears 9 are respectively fixedly sleeved at both ends of the driving roller 3. First movable seats 11 are respectively arranged on both sides of the frame 1. The first movable seats 11 are fixedly installed with first toothed plates 10 adapted to the first gears 9. The first injection molding die 6 is equipped with a height adjustment structure adapted to the first movable seats 11. The first movable seats 11 are equipped with a calibration mechanism adapted to the driving roller 3; the molded breathing mask is ejected from the first injection molding die 6 through the ejection assembly, and the ejected breathing mask falls onto the conveyor belt 4. While the first injection molding die 6 moves, the first injection molding die 6 drives the first movable seats 11 and the first toothed plates 10 to move synchronously through the height adjustment structure. The first movable seats 11 calibrate the positions of the driving roller 3 and the first gears 9 through the calibration mechanism. The teeth on the first toothed plates 10 are engaged with the teeth on the first gears 9. The first toothed plates 10 drive the first gears 9 and the driving roller 3 to rotate, and the driving roller 3 drives the conveyor belt 4 to move, so as to drive the breathing mask to move by the conveyor belt 4. When the hydraulic telescopic rod 8 drives the first injection molding die 6 to move in the reverse direction, the height adjustment structure drives the first movable seats 11 and the first toothed plates 10 to move downward, so that the first toothed plates 10 are disengaged from the first gears 9 until the first injection molding die 6 returns to the initial position, and then the next round of injection molding processing can be started. During the opening and closing process of the first injection molding die 6 and the second injection molding die 7, the breathing mask can be conveyed to a preset position from below the first injection molding die 6 and the second injection molding die 7, which improves safety and facilitates the blanking of the molded part.

[0035] Embodiment 2, on the basis of Embodiment 1, by Figure 1 , Figure 3 , Figure 5 and Figure 6Given that the height adjustment structure includes first connecting plates 13 fixedly installed on both sides of the first injection molding die 6 respectively. A first prism 12 is fixedly connected to the bottom of the first connecting plate 13, and the two first prisms 12 respectively penetrate through the two first movable seats 11. The bottom end of the first prism 12 is fixedly connected to a base 14. A magnetic attraction member adapted to the first toothed plate 10 is installed on the base 14. The base 14 and the first movable seat 11 are connected by a first compression spring 15. A stop ring 16 in contact with the top of the first movable seat 11 is fixedly sleeved outside the first prism 12. The frame 1 is equipped with a supporting unit adapted to the first movable seat 11. The magnetic attraction member includes an iron column 17 fixedly installed on the top of the base 14. A first magnet block 18 adapted to the iron column 17 is fixedly connected to the bottom of the first toothed plate 10. The supporting unit includes a fixed column 20 fixedly installed on the side of the first movable seat 11 away from the first toothed plate 10. Protective covers 19 are respectively fixedly connected to both sides of the frame 1. Two support blocks 21 are fixedly connected to the protective covers 19. An inclined surface adapted to the fixed column 20 is provided on the support block 21;

[0036] The first compression spring 15 is in a compressed state in its initial state. The first compression spring 15 exerts a pressure on the first movable seat 11 so that the top of the first movable seat 11 abuts against the bottom of the stop ring 16. When the first injection molding die 6 drives the first prism 12 and the first movable seat 11 to move towards the first gear 9 through the first connecting plate 13, finally the first toothed plate 10 and the first gear 9 are engaged. When the first toothed plate 10 and the first movable seat 11 move to a preset position, the first movable seat 11 drives the fixed column 20 to contact the inclined surface on one of the support blocks 21. As the first movable seat 11 continues to move, the support block 21 supports and moves the fixed column 20 and the first movable seat 11 downward. The first movable seat 11 drives the first toothed plate 10 and the first magnet block 18 downward. Finally, the first magnet block 18 contacts the iron column 17, and the first magnet block 18 and the iron column 17 are magnetically attracted to each other. The first movable seat 11 and the first toothed plate 10 maintain their heights at this time, and the first toothed plate 10 is no longer engaged with the first gear 9. When the first injection molding die 6 drives the first connecting plate 13 and the first prism 12 to move in the reverse direction, the first toothed plate 10 no longer drives the first gear 9 to rotate in the reverse direction. As the first prism 12 continues to move, the fixed column 20 contacts the inclined surface on the other support block 21, and the support block 21 supports and moves the fixed column 20 and the first movable seat 11 upward. The first magnet block 18 is no longer magnetically attracted to the iron column 17. The first compression spring 15 pushes the first movable seat 11 and the fixed column 20 upward, and the first movable seat 11 contacts the stop ring 16, so that the first toothed plate 10 and the first movable seat 11 can be reset to their initial positions.

[0037] Embodiment 3, based on Embodiment 2, by Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、Figure 5 , Figure 7 and Figure 8 are provided. The correction mechanism includes a second connecting plate 44 fixedly installed on the first movable seat 11. One end of the second connecting plate 44 away from the first movable seat 11 is fixedly connected to a reset box 22. A first rotating shaft 23 is rotatably connected to the reset box 22. Both ends of the driving roller 3 are fixedly connected with two supporting parts 25. The top end of the first rotating shaft 23 is fixedly connected with a dial plate 24 adapted to the supporting part 25. The reset box 22 is equipped with a rotary reset unit adapted to the first rotating shaft 23. The frame 1 is equipped with a magnetic attraction support device adapted to the supporting part 25. The rotary reset unit includes a second gear 30 fixedly sleeved outside the first rotating shaft 23, and the second gear 30 is located inside the reset box 22. A second toothed plate 31 meshing with the second gear 30 is arranged inside the reset box 22. The second toothed plate 31 is fixedly installed with a second movable seat 32. One side of the second movable seat 32 away from the second toothed plate 31 is fixedly connected with a second prism 33. A support plate 34 is slidably sleeved outside the second prism 33. The support plate 34 is fixedly connected with the reset box 22. The support plate 34 is in contact with the second movable seat 32. One end of the second prism 33 away from the second toothed plate 31 is fixedly connected with a fixed disk 35. A second compression spring 36 is sleeved outside the second prism 33, and both ends of the second compression spring 36 are fixedly connected with the fixed disk 35 and the support plate 34 respectively. The magnetic attraction support device includes second rotating shafts 27 rotatably installed on both sides of the frame 1 respectively. The second rotating shafts 27 are fixedly installed with a stop plate 26 located above the driving roller 3. The length of the stop plate 26 below the second rotating shaft 27 is greater than the length of the stop plate 26 above the second rotating shaft 27, and the stop plate 26 is located on the side of the supporting part 25 facing the first movable seat 11. The top end of the stop plate 26 is fixedly connected with a second magnet block 29, and the second magnet block 29 is located on the side of the stop plate 26 away from the supporting part 25. An iron plate 28 is in contact with the side of the second magnet block 29 away from the stop plate 26, and the iron plate 28 is fixedly connected with the frame 1. The ejection assembly includes a third movable seat 37 arranged on the side of the first injection molding die 6 away from the second injection molding die 7. The third movable seat 37 is fixedly installed with a plurality of ejector rods 38 adapted to the cavity of the first injection molding die 6. The third movable seat 37 and the first injection molding die 6 are connected by a plurality of third compression springs 39. The first injection molding die 6 is equipped with a positioning unit adapted to the third movable seat 37. The positioning unit includes a guide post 40 fixedly installed on the side of the first injection molding die 6 away from the second injection molding die 7. A guide sleeve 41 is slidably sleeved outside the guide post 40. The guide sleeve 41 is fixedly connected with the third movable seat 37. A limiting hole 42 is opened on the inner wall of the guide sleeve 41. A limiting block 43 is arranged inside the limiting hole 42, and the limiting block 43 is fixedly connected with the guide post 40;

[0038] When the first movable seat 11 moves toward the first gear 9, the first movable seat 11 drives the first rotating shaft 23 and the paddle plate 24 to move toward the driving roller 3 through the second connecting plate 44 and the reset box 22. At this time, the second compression spring 36 is in a compressed state. The second compression spring 36 applies a thrust to the fixed plate 35 and the second prism 33 to make the second movable seat 32 and the support plate 34 close to each other. The second toothed plate 31 and the paddle plate 24 are fixed relative to the reset box 22. As the first movable seat 11 continues to move, the paddle plate 24 contacts with a supporting portion 25 located below. As the first movable seat 11 continues to move, the paddle plate 24 paddles the supporting portion 25 and the driving roller 3 to rotate. When the other supporting portion 25 contacts the stop plate 26, at this time, the second magnet block 29 and the iron plate 28 are in contact with each other. The magnetic attraction state is maintained during the period of time. With the continuous movement of the first movable seat 11 and the reset box 22, the driving roller 3 and the two supporting parts 25 remain stationary relative to the frame 1, the dial plate 24 and the first rotating shaft 23 rotate, and the first rotating shaft 23 drives the second toothed plate 31 and the second movable seat 32 to move through the second gear 30. The second movable seat 32 drives the fixed plate 35 to move toward the supporting plate 34 through the second prism 33. Finally, the dial plate 24 slides from one side of the supporting part 25, and the supporting part 25 no longer supports the dial plate 24. The second compression spring 36 pushes the fixed plate 35 and the second prism 33 to move in the opposite direction. Finally, the second movable seat 32 contacts the supporting plate 34 again, and the second toothed plate 31 drives the second gear 30 to rotate, so that the dial plate 24 and the first rotating shaft 23 are relative to the reset box. 22 rotates in the opposite direction to the initial position. When the first tooth plate 10 is meshed with the first gear 9, the first tooth plate 10 drives the first gear 9, the driving roller 3 and the supporting part 25 to rotate. The supporting part 25 drives the stop plate 26 and the second rotating shaft 27 to rotate relative to the frame 1. The second magnet block 29 is no longer magnetically attracted to the iron plate 28. Finally, the bottom end of the stop plate 26 slides over the end of the supporting part 25. Since the length of the stop plate 26 below the second rotating shaft 27 is greater than the length of the stop plate 26 above the second rotating shaft 27, when the supporting part 25 no longer supports the stop plate 26, the stop plate 26 rotates in the opposite direction to reset, and the second magnet block 29 is magnetically attracted to the iron plate 28 again. When the first tooth plate 10 and the first movable seat 11 move downward, the first tooth plate 10 is no longer engaged with the first gear 9 When in contact, the first movable seat 11 drives the second connecting plate 44, the reset box 22 and the dial plate 24 to move downward, and the dial plate 24 moves to the bottom of the support portion 25. When the first injection molding mold 6 moves toward the second injection molding mold 7, the first movable seat 11 drives the dial plate 24 to slide from under the driving roller 3 and the support portion 25 to the initial position through the second connecting plate 44 and the reset box 22. The hydraulic telescopic rod 8 drives the first injection molding mold 6 to move in a direction away from the second injection molding mold 7. The first injection molding mold 6 and the second injection molding mold 7 are separated. When the first injection molding mold 6 moves to the preset position, the side of the third movable seat 37 away from the first injection molding mold 6 contacts the mounting frame 5, and the third movable seat 37 remains stationary relative to the mounting frame 5.As the first injection molding die 6 continues to move, the distance between the first injection molding die 6 and the third movable seat 37 becomes smaller, the third compression spring 39 is in a compressed state, the ejector rod 38 slides relative to the first injection molding die 6, and the ejector rod 38 can eject the molded part in the cavity of the first injection molding die 6. Moreover, the third compression spring 39 is in a compressed state. When the hydraulic telescopic rod 8 drives the first injection molding die 6 to move towards the second injection molding die 7, the length of the third compression spring 39 becomes longer, and the first injection molding die 6 drives the guide post 40 to slide relative to the guide sleeve 41, and the limit block 43 slides in the limit hole 42. When the distance between the first injection molding die 6 and the third movable seat 37 returns to the initial value, the side of the limit block 43 away from the third movable seat 37 abuts against the inner wall of the limit hole 42, and the guide post 40 cannot slide relative to the guide sleeve 41. The third movable seat 37 is stationary relative to the guide post 40 and the first injection molding die 6, and the third movable seat 37 and the ejector rod 38 are reset to the initial position relative to the first injection molding die 6. As the first injection molding die 6 continues to move, the third movable seat 37 follows the first injection molding die 6 to move, and the third movable seat 37 no longer contacts the mounting frame 5.,

[0039] A method for molding a medical breathing mask according to this embodiment uses the medical breathing mask molding production line as described above, and includes the following steps:

[0040] Step 1: After the first injection molding die 6 and the second injection molding die 7 are closed and the breathing mask is injection molded, the hydraulic telescopic rod 8 is used to drive the first injection molding die 6 to move in a direction away from the second injection molding die 7;

[0041] Step 2: The molded breathing mask is ejected from the first injection molding die 6 through the ejection assembly, and the ejected breathing mask falls onto the conveyor belt 4. While the first injection molding die 6 moves, the first injection molding die 6 drives the first movable seat 11 and the first toothed plate 10 to move synchronously through the height adjustment structure;

[0042] Step 3: The first movable seat 11 corrects the positions of the driving roller 3 and the first gear 9 through the correction mechanism. The teeth on the first toothed plate 10 mesh with the teeth on the first gear 9. The first toothed plate 10 drives the first gear 9 and the driving roller 3 to rotate, and the driving roller 3 drives the conveyor belt 4 to move, so that the conveyor belt 4 drives the breathing mask to move;

[0043] Step 4: When the hydraulic telescopic rod 8 drives the first injection molding die 6 to move in the reverse direction, the height adjustment structure drives the first movable seat 11 and the first toothed plate 10 to move downward, so that the first toothed plate 10 is disengaged from the first gear 9 until the first injection molding die 6 is reset to the initial position, and the next round of injection molding processing can be started.

[0044] Working principle: After the first injection molding die 6 and the second injection molding die 7 are closed and the breathing mask is injection molded, the first injection molding die 6 is driven by the hydraulic telescopic rod 8 to move away from the second injection molding die 7. Then, the molded breathing mask is ejected from the first injection molding die 6 by the ejection assembly, and the ejected breathing mask falls onto the conveyor belt 4. While the first injection molding die 6 is moving, the first injection molding die 6 drives the first movable seat 11 and the first toothed plate 10 to move synchronously through the height adjustment structure. The first movable seat 11 first corrects the positions of the driving roller 3 and the first gear 9 through the correction mechanism so that the first gear 9 is in a preset position, ensuring that when the first toothed plate 10 contacts the first gear 9, the teeth on the first toothed plate 10 mesh with the teeth on the first gear 9. As the first injection molding die 6 continues to move, the first toothed plate 10 drives the first gear 9 and the driving roller 3 to rotate, and the driving roller 3 drives the conveyor belt 4 to move so that the conveyor belt 4 drives the breathing mask to move. When the hydraulic telescopic rod 8 drives the first injection molding die 6 to move in the reverse direction so that the first injection molding die 6 and the second injection molding die 7 are closed again, the height adjustment structure drives the first movable seat 11 and the first toothed plate 10 to move downward so that the first toothed plate 10 disengages from the first gear 9. When the first injection molding die 6 and the first toothed plate 10 move in the reverse direction, the first toothed plate 10 does not drive the first gear 9 and the driving roller 3 to rotate in the reverse direction until the first injection molding die 6 returns to the initial position, and then the next round of injection molding processing can be started. During the opening and closing process of the first injection molding die 6 and the second injection molding die 7, the breathing mask can be conveyed from below the first injection molding die 6 and the second injection molding die 7 to the preset position, improving safety and facilitating the blanking of the molded parts;

[0045] The first compression spring 15 is initially in a compressed state. The first compression spring 15 applies pressure to the first movable seat 11 so that the top of the first movable seat 11 abuts against the bottom of the stop ring 16. When the first injection molding die 6 drives the first prism 12 and the first movable seat 11 to move towards the first gear 9 through the first connecting plate 13, finally the first toothed plate 10 and the first gear 9 are engaged. When the first toothed plate 10 and the first movable seat 11 move to a preset position, the first movable seat 11 drives the fixed column 20 to contact the inclined surface on one of the support blocks 21. As the first movable seat 11 continues to move, the support block 21 supports and moves the fixed column 20 and the first movable seat 11 downward. The first movable seat 11 drives the first toothed plate 10 and the first magnet block 18 downward. Finally, the first magnet block 18 contacts the iron column 17, and the first magnet block 18 and the iron column 17 are magnetically attracted to each other. The first movable seat 11 and the first toothed plate 10 maintain their heights at this time, and the first toothed plate 10 is no longer engaged with the first gear 9. When the first injection molding die 6 drives the first connecting plate 13 and the first prism 12 to move in the reverse direction, the first toothed plate 10 no longer drives the first gear 9 to rotate in the reverse direction. As the first prism 12 continues to move, the fixed column 20 contacts the inclined surface on the other support block 21, and the support block 21 supports and moves the fixed column 20 and the first movable seat 11 upward. The first magnet block 18 is no longer magnetically attracted to the iron column 17. The first compression spring 15 pushes the first movable seat 11 and the fixed column 20 upward, and the first movable seat 11 contacts the stop ring 16, so that the first toothed plate 10 and the first movable seat 11 can be reset to their initial positions;

[0046] When the first movable seat 11 moves toward the first gear 9, the first movable seat 11 drives the first rotating shaft 23 and the paddle plate 24 to move toward the driving roller 3 through the second connecting plate 44 and the reset box 22. At this time, the second compression spring 36 is in a compressed state. The second compression spring 36 applies a thrust to the fixed plate 35 and the second prism 33 to make the second movable seat 32 and the support plate 34 close to each other. The second toothed plate 31 and the paddle plate 24 are fixed relative to the reset box 22. As the first movable seat 11 continues to move, the paddle plate 24 contacts with a supporting portion 25 located below. As the first movable seat 11 continues to move, the paddle plate 24 paddles the supporting portion 25 and the driving roller 3 to rotate. When the other supporting portion 25 contacts the stop plate 26, at this time, the second magnet block 29 and the iron plate 28 are in contact with each other. The magnetic attraction state is maintained during the period of time. With the continuous movement of the first movable seat 11 and the reset box 22, the driving roller 3 and the two supporting parts 25 remain stationary relative to the frame 1, the dial plate 24 and the first rotating shaft 23 rotate, and the first rotating shaft 23 drives the second toothed plate 31 and the second movable seat 32 to move through the second gear 30. The second movable seat 32 drives the fixed plate 35 to move toward the supporting plate 34 through the second prism 33. Finally, the dial plate 24 slides from one side of the supporting part 25, and the supporting part 25 no longer supports the dial plate 24. The second compression spring 36 pushes the fixed plate 35 and the second prism 33 to move in the opposite direction. Finally, the second movable seat 32 contacts the supporting plate 34 again, and the second toothed plate 31 drives the second gear 30 to rotate, so that the dial plate 24 and the first rotating shaft 23 are relative to the reset box. 22 rotates in the opposite direction to the initial position. When the first tooth plate 10 is meshed with the first gear 9, the first tooth plate 10 drives the first gear 9, the driving roller 3 and the supporting part 25 to rotate. The supporting part 25 drives the stop plate 26 and the second rotating shaft 27 to rotate relative to the frame 1. The second magnet block 29 is no longer magnetically attracted to the iron plate 28. Finally, the bottom end of the stop plate 26 slides over the end of the supporting part 25. Since the length of the stop plate 26 below the second rotating shaft 27 is greater than the length of the stop plate 26 above the second rotating shaft 27, when the supporting part 25 no longer supports the stop plate 26, the stop plate 26 rotates in the opposite direction to reset, and the second magnet block 29 is magnetically attracted to the iron plate 28 again. When the first tooth plate 10 and the first movable seat 11 move downward, the first tooth plate 10 is no longer engaged with the first gear 9 When in contact, the first movable seat 11 drives the second connecting plate 44, the reset box 22 and the dial plate 24 to move downward, and the dial plate 24 moves to the bottom of the support portion 25. When the first injection molding mold 6 moves toward the second injection molding mold 7, the first movable seat 11 drives the dial plate 24 to slide from under the driving roller 3 and the support portion 25 to the initial position through the second connecting plate 44 and the reset box 22. The hydraulic telescopic rod 8 drives the first injection molding mold 6 to move in a direction away from the second injection molding mold 7. The first injection molding mold 6 and the second injection molding mold 7 are separated. When the first injection molding mold 6 moves to the preset position, the side of the third movable seat 37 away from the first injection molding mold 6 contacts the mounting frame 5, and the third movable seat 37 remains stationary relative to the mounting frame 5.As the first injection molding die 6 continues to move, the distance between the first injection molding die 6 and the third movable seat 37 becomes smaller, the third compression spring 39 is in a compressed state, the ejector rod 38 slides relative to the first injection molding die 6, and the ejector rod 38 can eject the molded part in the cavity of the first injection molding die 6. Moreover, the third compression spring 39 is in a compressed state. When the hydraulic telescopic rod 8 drives the first injection molding die 6 to move towards the second injection molding die 7, the length of the third compression spring 39 becomes longer, the first injection molding die 6 drives the guide post 40 to slide relative to the guide sleeve 41, and the limit block 43 slides in the limit hole 42. When the distance between the first injection molding die 6 and the third movable seat 37 returns to the initial value, the side of the limit block 43 away from the third movable seat 37 abuts against the inner wall of the limit hole 42, the guide post 40 cannot slide relative to the guide sleeve 41, the third movable seat 37 is stationary relative to the guide post 40 and the first injection molding die 6, and the third movable seat 37 and the ejector rod 38 are reset to the initial position relative to the first injection molding die 6. As the first injection molding die 6 continues to move, the third movable seat 37 follows the first injection molding die 6 to move, and the third movable seat 37 no longer contacts the mounting bracket 5.,

[0047] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0048] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A medical respiratory mask molding production line, comprising a frame (1), characterized in that: The top of the frame (1) is fixedly connected to a mounting frame (5), a hydraulic telescopic rod (8) is fixedly installed on the mounting frame (5), the telescopic end of the hydraulic telescopic rod (8) is fixedly connected to a first injection molding mold (6), the mounting frame (5) is fixedly installed to a second injection molding mold (7), the first injection molding mold (6) is installed with an ejection assembly for ejecting a molded part, a driven roller (2) and a driving roller (3) are rotatably connected to the frame (1), the driven roller (2) and the driving roller (3) are connected via a conveyor belt (4), both ends of the driving roller (3) are respectively fixedly sleeved with a first gear (9), first movable seats (11) are respectively provided on both sides of the frame (1), the first movable seat (11) is fixedly installed with a first tooth plate (10) matched with the first gear (9), the first injection molding mold (6) is installed with a height adjustment structure matched with the first movable seat (11), and the first movable seat (11) is installed with a correction mechanism matched with the driving roller (3); The correction mechanism comprises a second connecting plate (44) fixedly mounted on the first movable seat (11); an end of the second connecting plate (44) away from the first movable seat (11) is fixedly connected to a reset box (22); a first rotating shaft (23) is rotatably connected to the reset box (22); two ends of the driving roller (3) are fixedly connected to two supporting parts (25); a top end of the first rotating shaft (23) is fixedly connected to a dial plate (24) matched with the supporting part (25); a rotating reset unit matched with the first rotating shaft (23) is installed on the reset box (22); and a magnetic support matched with the supporting part (25) is installed on the frame (1); The rotary reset unit comprises a second gear (30) fixedly sleeved on the outside of the first rotating shaft (23), and the second gear (30) is located in the reset box (22), a second tooth plate (31) meshing with the second gear (30) is provided in the reset box (22), a second movable seat (32) is fixedly installed on the second tooth plate (31), a second prism (33) is fixedly connected to a side of the second movable seat (32) away from the second tooth plate (31), a support plate (34) is provided on the external sliding sleeve of the second prism (33), the support plate (34) and the reset box (22) are fixedly connected, the support plate (34) and the second movable seat (32) are in contact, a fixed plate (35) is fixedly connected to one end of the second prism (33) away from the second tooth plate (31), a second compression spring (36) is provided on the external sleeve of the second prism (33), and two ends of the second compression spring (36) are respectively fixedly connected to the fixed plate (35) and the support plate (34); The magnetic support comprises a second rotating shaft (27) rotatably mounted on both sides of the frame (1), the second rotating shaft (27) being fixedly mounted with a stop plate (26) located above the driving roller (3), the length of the stop plate (26) below the second rotating shaft (27) being greater than the length of the stop plate (26) above the second rotating shaft (27), and the stop plate (26) is located on a side of the support portion (25) facing the first movable seat (11), the top end of the stop plate (26) is fixedly connected with a second magnet block (29), and the second magnet block (29) is located on a side of the stop plate (26) away from the support portion (25), and the side of the second magnet block (29) away from the stop plate (26) is in contact with an iron plate (28), and the iron plate (28) is fixedly connected to the frame (1).

2. A medical respiratory mask molding production line according to claim 1, characterized in that: The height adjustment structure comprises a first connecting plate (13) fixedly mounted on both sides of the first injection molding mold (6), the bottom of the first connecting plate (13) being fixedly connected to a first prism (12), and the two first prisms (12) respectively penetrate the two first movable seats (11), the bottom end of the first prism (12) being fixedly connected to a base (14), the base (14) being equipped with a magnetic attraction member matched with the first tooth plate (10), the base (14) and the first movable seat (11) being connected via a first compression spring (15), the outer fixed sleeve of the first prism (12) being provided with a stop ring (16) in contact with the top of the first movable seat (11), and the frame (1) being equipped with a supporting unit matched with the first movable seat (11).

3. A medical respiratory mask molding production line according to claim 2, characterized in that: The magnetic attraction component comprises an iron column (17) fixedly mounted on the top of the base (14); a first magnet block (18) adapted to the iron column (17) is fixedly connected to the bottom of the first tooth plate (10).

4. A medical respiratory mask molding production line according to claim 2, characterized in that: The supporting unit comprises a fixed column (20) fixedly mounted on a side of the first movable seat (11) away from the first tooth plate (10), and protective covers (19) are fixedly connected to both sides of the frame (1), and the protective covers (19) are fixedly connected to two support blocks (21), and the support blocks (21) are provided with inclined surfaces that are compatible with the fixed column (20).

5. A medical respiratory mask molding production line according to claim 1, characterized in that: The ejection assembly comprises a third movable seat (37) arranged on a side of the first injection molding mold (6) away from the second injection molding mold (7); the third movable seat (37) is fixedly mounted with a plurality of ejection rods (38) adapted to the cavity of the first injection molding mold (6); the third movable seat (37) and the first injection molding mold (6) are connected via a plurality of third compression springs (39); and the first injection molding mold (6) is mounted with a positioning unit adapted to the third movable seat (37).

6. A medical respiratory mask molding production line according to claim 5, characterized in that: The positioning unit comprises a guide column (40) fixedly mounted on a side of the first injection molding mold (6) away from the second injection molding mold (7); an outer sliding sleeve of the guide column (40) is provided with a guide sleeve (41); the guide sleeve (41) and the third movable seat (37) are fixedly connected; a limiting hole (42) is provided on the inner wall of the guide sleeve (41); a limiting block (43) is provided in the limiting hole (42); and the limiting block (43) and the guide column (40) are fixedly connected.

7. A method for forming a medical respiratory mask, using the medical respiratory mask forming production line as claimed in claim 1, characterized in that: The following steps are involved: Step 1: After the first injection molding mold (6) and the second injection molding mold (7) are closed and the injection molding of the respiratory mask is completed, the first injection molding mold (6) is driven by the hydraulic telescopic rod (8) to move in a direction away from the second injection molding mold (7); Step 2: ejecting the molded respiratory mask from the first injection molding mold (6) through the ejection assembly, and the ejected respiratory mask falls onto the conveyor belt (4). While the first injection molding mold (6) moves, the first injection molding mold (6) drives the first movable seat (11) and the first tooth plate (10) to move synchronously through the height adjustment structure; Step 3: The first movable seat (11) corrects the positions of the driving roller (3) and the first gear (9) through the correction mechanism, the teeth on the first toothed plate (10) mesh with the teeth on the first gear (9), the first toothed plate (10) drives the first gear (9) and the driving roller (3) to rotate, the driving roller (3) drives the conveyor belt (4) to move, so that the conveyor belt (4) drives the breathing mask to move; Step 4: When the hydraulic telescopic rod (8) drives the first injection molding mold (6) to move in the opposite direction, the height adjustment structure drives the first movable seat (11) and the first tooth plate (10) to move downward, so that the first tooth plate (10) releases the meshing relationship with the first gear (9), until the first injection molding mold (6) is reset to the initial position, and the next round of injection molding processing can be started.

Images