Automatic heat sealing device for medical paper-plastic packaging bags

Abstract

The present invention belongs to the technical field of heat-sealing packaging bags, and specifically is an automatic heat-sealing device for medical paper-plastic packaging bags, comprising a bottom plate; a material box is fixedly connected to one end of the top surface of the bottom plate; a conveying unit is arranged inside the material box; a support frame is fixedly connected to the other end of the top surface of the bottom plate; a rotating rod is rotatably installed on the top of the support frame; a rotating drum is rotatably installed on the outer ring of the rotating rod of the support frame; a lifting unit is arranged on the top of the support frame, and a heat-sealing knife is arranged on the lifting unit; a plurality of medical paper-plastic packaging bags are vertically placed inside the material box, the conveying unit pushes the medical paper-plastic packaging bags toward the rotating drum, and the lifting unit drives the heat-sealing knife to descend in height to heat-seal the top opening of the medical paper-plastic packaging bag; thereby the medical paper-plastic packaging bag is sealed, and leakage of medicines inside the medical paper-plastic packaging bag is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of heat-sealing packaging bags, in particular to an automatic heat-sealing device for medical paper-plastic packaging bags. Background Art

[0002] Paper-plastic packaging bags are a type of packaging bag made of a composite of plastic and kraft paper. They have high strength and good sealing and waterproof properties, making them convenient for packaging bulk powdery and granular materials. Medical paper-plastic packaging bags are commonly used in hospitals to package medicinal powders and bulk tablets.

[0003] The hospital pharmacy will pack bulk powder or bulk tablets into medical paper-plastic packaging bags according to the prescription drug list issued by the doctor, forming single-use or multiple-use medicine packages; the medical paper-plastic packaging bags with packed medicines will be handed over to patients, which not only saves waste of medicines but also facilitates their use by patients.

[0004] However, after the medical staff in the hospital pharmacy pack the drugs into medical paper-plastic packaging bags, the openings of the medical paper-plastic packaging bags are usually simply folded without being sealed, which not only easily causes foreign matter to enter, but also easily causes the drugs to leak.

[0005] To this end, the present invention provides an automatic heat-sealing device for a medical paper-plastic packaging bag. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the medical paper-plastic packaging bag automatic heat-sealing device described in the present invention comprises a bottom plate; the bottom plate is placed and fixed on a desktop; a material box is fixedly connected to one end of the top surface of the bottom plate; the medical paper-plastic packaging bag is placed inside the material box; a conveying unit is arranged inside the material box, and the conveying unit is used to convey the medical paper-plastic packaging bag; a support frame is fixedly connected to the other end of the top surface of the bottom plate; a rotating rod is rotatably installed on the top of the support frame; a rotating drum is rotatably installed on the outer ring of the rotating rod of the support frame; a lifting unit is arranged on the top of the support frame, and a heat-sealing knife is arranged on the lifting unit; the bottom of the heat-sealing knife presses down the top opening of the medical paper-plastic packaging bag to heat-seal the top opening of the medical paper-plastic packaging bag; thereby the medical paper-plastic packaging bag is sealed to avoid leakage of medicines inside the medical paper-plastic packaging bag.

[0008] Preferably, the conveying unit includes a slide groove; a plurality of the slide grooves are opened on the bottom surface of the material box; a push plate is slidably installed on the top of the plurality of slide grooves; a screw rod is rotatably installed in the middle of the bottom surface of the material box; the screw rod passes through the bottom of the push plate, and the screw rod and the push plate thread are matched; a No. 1 motor is fixedly connected to one end of the bottom surface of the material box away from the support frame; the rotating shaft of the No. 1 motor is fixedly connected to the screw rod; automatic feeding of medical paper-plastic packaging bags is realized, which is convenient for medical personnel to operate and improves work efficiency.

[0009] Preferably, a material dispensing unit is provided at the top of one end of the material box close to the rotating drum; the material dispensing unit includes a No. 1 vertical arm; a pair of the No. 1 vertical arms are fixedly connected to both sides of one end of the material box close to the rotating drum; a No. 1 cross bar is rotatably installed on the top between the pair of the No. 1 vertical arms; a No. 2 motor is fixedly connected to the top of one side of the No. 1 vertical arm; the rotating shaft of the No. 2 motor is fixedly connected to the end of the No. 1 cross bar; an extension component is provided in the middle of the No. 1 cross bar; and a material dispensing plate is provided at the bottom of the extension component.

[0010] Preferably, the extension component includes a mounting seat; the middle outer ring of the No. 1 crossbar is fixedly connected to the mounting seat; a sliding hole is provided on one side of the mounting seat; an extension slide rod is slidably installed inside the sliding hole; the bottom of the extension slide rod is bolted to the top surface of the material stripping plate; a tooth groove is provided on the side of the extension slide rod close to the middle of the mounting seat; a No. 3 motor is fixedly connected to the top surface of the mounting seat; a No. 1 gear is fixedly connected to the outer ring of the rotating shaft of the No. 3 motor; the No. 1 gear is meshed with the tooth groove; so as to facilitate the heat sealing work of the heat sealing knife.

[0011] Preferably, a blocking unit is provided at the middle of one end of the material box close to the rotating drum; the blocking unit includes an adjusting groove; a pair of the adjusting grooves are opened on both sides of the bottom surface of one end of the material box close to the rotating drum; fixing bolts are slidably installed inside the adjusting grooves; a horizontal plate is provided on the top of the two fixing bolts; the bottom surface of the horizontal plate is slidably matched with the bottom surface of the inner cavity of the material box; a vertical cylinder is fixedly connected to the middle of the top surface of the horizontal plate; a sliding column is slidably installed inside the vertical cylinder; a blocking rod is fixedly connected to the top of the sliding column; a plurality of fixed through grooves are opened in the middle of the vertical cylinder and the sliding column; fixing pins are slidably installed inside the fixed through grooves; the medical paper-plastic packaging bags are prevented from falling and tipping over.

[0012] Preferably, a half gear ring is fixed to the bottom of one end of the inner ring of the rotating drum; a fixing plate is fixed to the side of the supporting frame close to the half gear ring; a No. 4 motor is fixed to the bottom surface of the fixing plate; a No. 2 gear is fixed to the outer ring of the rotating shaft of the No. 4 motor; and the No. 2 gear is meshed with the half gear ring.

[0013] Preferably, the lifting unit includes a No. 2 vertical arm; two of the No. 2 vertical arms are bolted to the tops of both sides of the support frame; a lifting slot is provided on the top of the No. 2 vertical arm; a lifting seat is slidably installed inside the lifting slot; the lifting seats on both sides are fixedly connected to the two ends of the heat sealing knife; an electric push rod is fixedly connected to the side of the No. 2 vertical arm away from the rotating drum; and the top of the electric push rod is fixedly connected to the bottom surface of the lifting seat.

[0014] Preferably, a material pressing unit is provided on the side of the top of the rotating drum away from the material box; the material pressing unit includes a rotating arm; the two rotating arms are rotatably installed at the two ends of the top of the rotating drum away from the material box; the rotating shaft of the rotating arm on one side is fixedly connected to a No. 5 motor; the No. 5 motor is fixedly connected to the inner wall of the rotating drum; a material pressing roller is fixedly connected between the tops of the two rotating arms; a plurality of convex strips are fixedly connected around the outer ring of the material pressing roller; thereby completing the automatic heat sealing of the medical paper-plastic packaging bag, reducing the workload of medical staff and facilitating the operation of medical staff.

[0015] Preferably, a pair of mounting grooves are provided on the top of the rotating drum; a convex plate is slidably installed inside the mounting groove; the convex plate is fixed to the mounting groove by bolts; one of the convex plates away from the material box matches the pressing roller; the other convex plate matches the heat sealing knife; by the cooperation of the convex plate and the pressing roller, the strength of clamping the medical paper-plastic packaging bag is improved and the probability of the medical paper-plastic packaging bag falling is reduced; by the cooperation of the convex plate and the heat sealing knife, the sealing effect of the medical paper-plastic packaging bag is improved.

[0016] Preferably, a sliding plate is fixedly connected to the side of the support frame away from the material box; the top of the sliding plate is in contact with the rotating drum; and a hook is provided at the bottom of the sliding plate to facilitate operation by medical personnel.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The automatic heat-sealing device for medical paper-plastic packaging bags described in the present invention comprises a material box, a conveying unit, a rotating drum, a lifting unit and a heat-sealing knife; after the medical staff of the pharmacy packs the medicines into the medical paper-plastic packaging bags, they vertically place a plurality of medical paper-plastic packaging bags inside the material box, the conveying unit pushes the medical paper-plastic packaging bags toward the rotating drum, and after the top opening of the medical paper-plastic packaging bags moves to the top of the rotating drum, the lifting unit drives the heat-sealing knife to descend in height, and the bottom of the heat-sealing knife presses down the top opening of the medical paper-plastic packaging bags to heat-seal the top opening of the medical paper-plastic packaging bags; thereby, the medical paper-plastic packaging bags are sealed, and leakage of the medicines inside the medical paper-plastic packaging bags is avoided.

[0019] 2. The automatic heat sealing device for medical paper and plastic packaging bags described in the present invention comprises a No. 1 vertical arm, a No. 1 cross bar, a No. 2 motor, a material stripping plate, a mounting seat, an extension slide bar, a No. 3 motor and a No. 1 gear; when the push plate pushes the medical paper and plastic packaging bag close to the rotating drum, at this time, the extension slide bar drives the material stripping plate to be at a high position, and the medical paper and plastic packaging bag passes under the material stripping plate, and the No. 3 motor drives the No. 1 gear to rotate, driving the extension slide bar to slide downward along the slide hole, pushing the material stripping plate down to the side of the medical paper and plastic packaging bag away from the rotating drum, and then, the No. 2 motor drives the No. 1 cross bar to rotate, driving the material stripping plate to rotate, and at the same time, the extension slide bar pushes the material stripping plate to extend, pushing the top opening of the medical paper and plastic packaging bag toward the outer wall of the rotating drum, and pressing the top opening of the medical paper and plastic packaging bag onto the outer wall of the rotating drum, thereby facilitating the heat sealing work of the heat sealing knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 It is a front view of the material box in the present invention;

[0023] Figure 3 is a three-dimensional diagram of the conveying unit in the present invention;

[0024] Figure 4 It is a three-dimensional diagram of the material shifting unit in the present invention;

[0025] Figure 5 is an exploded view of the extension assembly of the present invention;

[0026] Figure 6 is a three-dimensional diagram of a blocking unit in the present invention;

[0027] Figure 7 is an exploded view of the rotary drum in the present invention;

[0028] Figure 8 is a three-dimensional diagram of a rotating drum in the present invention;

[0029] Fig. 9 is a three-dimensional diagram of the lifting unit in the present invention;

[0030] Fig.10 It is a three-dimensional diagram of the material pressing unit in the present invention;

[0031] In the figure: 1, bottom plate; 2, material box; 3, support frame; 4, rotating drum; 5, heat sealing knife; 6, slide groove; 7, push plate; 8, screw rod; 9, No. 1 motor; 10, No. 1 vertical arm; 11, No. 1 cross bar; 12, No. 2 motor; 13, material shifting plate; 14, mounting seat; 15, slide hole; 16, extension slide bar; 17, tooth groove; 18, No. 3 motor; 19, No. 1 gear; 20, adjustment slot; 21, fixing bolt ; 22. Horizontal plate; 23. Vertical cylinder; 24. Sliding column; 25. Stop rod; 26. Fixed through groove; 27. Fixed pin; 28. Half gear ring; 29. ​​Fixed plate; 30. No. 4 motor; 31. No. 2 gear; 32. No. 2 vertical arm; 33. Lifting slot; 34. Lifting seat; 35. Electric push rod; 36. Rotating arm; 37. No. 5 motor; 38. Pressing roller; 39. Mounting slot; 40. Convex plate; 41. Sliding plate. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] like Figure 1 to Figure 2 As shown, an automatic heat-sealing device for medical paper-plastic packaging bags according to an embodiment of the present invention comprises a bottom plate 1; the bottom plate 1 is placed and fixed on a desktop; a material box 2 is fixedly connected to one end of the top surface of the bottom plate 1; medical paper-plastic packaging bags are placed inside the material box 2; a conveying unit is arranged inside the material box 2, and the conveying unit is used to convey the medical paper-plastic packaging bags; a support frame 3 is fixedly connected to the other end of the top surface of the bottom plate 1; a rotating rod is rotatably installed on the top of the support frame 3; a rotating drum 4 is rotatably installed on the outer ring of the rotating rod of the support frame 3; a lifting unit is arranged on the top of the support frame 3, and the lifting unit A heat-sealing knife 5 is arranged on the element; when working, after the medical staff of the pharmacy packs the medicines into the medical paper-plastic packaging bags, a plurality of medical paper-plastic packaging bags are vertically placed inside the material box 2, and the conveying unit pushes the medical paper-plastic packaging bags toward the rotating drum 4. After the top opening of the medical paper-plastic packaging bags moves to the top of the rotating drum 4, the lifting unit drives the heat-sealing knife 5 to descend in height, and the bottom of the heat-sealing knife 5 presses down the top opening of the medical paper-plastic packaging bags to heat-seal the top opening of the medical paper-plastic packaging bags; thereby, the medical paper-plastic packaging bags are sealed to avoid leakage of medicines inside the medical paper-plastic packaging bags.

[0034] like Figures 1 to 3As shown, the conveying unit includes a slide groove 6; multiple slide grooves 6 are opened on the bottom surface of the material box 2; push plates 7 are slidably installed on the top of multiple slide grooves 6; a screw rod 8 is rotatably installed in the middle of the bottom surface of the material box 2; the screw rod 8 passes through the bottom of the push plate 7, and the screw rod 8 and the push plate 7 are threadedly matched; a No. 1 motor 9 is fixedly connected to the end of the bottom surface of the material box 2 away from the support frame 3; the rotating shaft of the No. 1 motor 9 is fixedly connected to the screw rod 8; when working, after multiple medical paper-plastic packaging bags are vertically placed inside the material box 2, the No. 1 motor 9 drives the screw rod 8 to rotate, drives the push plate 7 to slide along the slide groove 6, and pushes the medical paper-plastic packaging bags to move toward the rotating drum 4, thereby realizing automatic feeding of medical paper-plastic packaging bags, facilitating the operation of medical personnel, and improving work efficiency.

[0035] like Figures 1 to 5 As shown, a material-discharging unit is provided at the top of one end of the material box 2 close to the rotating drum 4; the material-discharging unit includes a No. 1 vertical arm 10; a pair of the No. 1 vertical arms 10 are fixedly connected to both sides of one end of the material box 2 close to the rotating drum 4; a No. 1 cross bar 11 is rotatably installed on the top between the pair of the No. 1 vertical arms 10; a No. 2 motor 12 is fixedly connected to the top of the No. 1 vertical arm 10 on one side; the rotating shaft of the No. 2 motor 12 is fixedly connected to the end of the No. 1 cross bar 11; an extension component is provided in the middle of the No. 1 cross bar 11; a material-discharging plate 13 is provided at the bottom of the extension component; the extension component includes a mounting seat 14; the middle outer ring of the No. 1 cross bar 11 is fixedly connected to the mounting seat 14; a sliding hole 15 is provided on one side of the mounting seat 14; an extension slide bar 16 is slidably installed inside the sliding hole 15; the bottom of the extension slide bar 16 is bolted to the top surface of the material-discharging plate 13; the extension slide bar 16 is provided on one side close to the middle of the mounting seat 14 There are tooth grooves 17; a No. 3 motor 18 is fixedly connected to the top surface of the mounting seat 14; the outer ring of the rotating shaft of the No. 3 motor 18 is fixedly connected to a No. 1 gear 19; the No. 1 gear 19 is meshed with the tooth groove 17; during operation, when the push plate 7 pushes the medical paper and plastic packaging bag close to the rotating drum 4, at this time, the extension slide bar 16 drives the material stripping plate 13 to be at a high position, and the medical paper and plastic packaging bag passes under the material stripping plate 13, and the No. 3 motor 18 drives the No. 1 gear 19 to rotate, driving the extension slide bar 16 to slide downward along the slide hole 15, pushing the material stripping plate 13 down to the side of the medical paper and plastic packaging bag away from the rotating drum 4, and then, the No. 2 motor 12 drives the No. 1 cross bar 11 to rotate, driving the material stripping plate 13 to rotate, and at the same time, the extension slide bar 16 pushes the material stripping plate 13 to extend, pushing the top opening of the medical paper and plastic packaging bag toward the outer wall of the rotating drum 4, and pressing the top opening of the medical paper and plastic packaging bag to the outer wall of the rotating drum 4, thereby facilitating the heat sealing knife 5 to perform heat sealing.

[0036] like Figure 1 , Figure 2 and Figure 6As shown, a blocking unit is provided at the middle of one end of the material box 2 close to the rotating drum 4; the blocking unit includes an adjusting groove 20; a pair of the adjusting grooves 20 are provided on both sides of the bottom surface of one end of the material box 2 close to the rotating drum 4; a fixing bolt 21 is slidably installed inside the adjusting groove 20; a cross plate 22 is provided on the top of the two fixing bolts 21; the bottom surface of the cross plate 22 is slidably matched with the bottom surface of the inner cavity of the material box 2; a vertical cylinder 23 is fixedly connected to the middle of the top surface of the horizontal plate 22; a sliding column 24 is slidably installed inside the vertical cylinder 23; a blocking rod 25 is fixedly connected to the top of the sliding column 24; a plurality of fixed passages are provided in the middle of the vertical cylinder 23 and the sliding column 24 Slot 26; a fixing pin 27 is slidably installed inside the fixed through slot 26; when working, the height of the blocking rod 25 is adjusted according to the specifications of the medical paper-plastic packaging bag, driving the sliding column 24 to slide along the vertical cylinder 23, and using the fixing pin 27 to penetrate the fixed through slot 26, the sliding column 24 and the vertical cylinder 23 are fixed and locked, and at the same time, the distance between the blocking unit and the rotating cylinder 4 is adjusted, and the cross plate 22 is fixed by penetrating the adjustment slot 20 with a fixing bolt 21, so that when the material stripping plate 13 pushes the rotating cylinder 4 with the top opening of the medical paper-plastic packaging bag, the bottom of the medical paper-plastic packaging bag is blocked by the blocking rod 25, thereby preventing the medical paper-plastic packaging bag from falling and tipping over.

[0037] like Figure 1 , Figure 7 , Figure 8 and Fig. 9 As shown, a half gear ring 28 is fixedly connected to the bottom of one end of the inner ring of the rotating drum 4; a fixing plate 29 is fixedly connected to the side of the supporting frame 3 close to the half gear ring 28; a No. 4 motor 30 is fixedly connected to the bottom surface of the fixing plate 29; a No. 2 gear 31 is fixedly connected to the outer ring of the rotating shaft of the No. 4 motor 30; the No. 2 gear 31 is meshed with the half gear ring 28;

[0038] The lifting unit comprises a second vertical arm 32; two of the second vertical arms 32 are bolted to the tops of both sides of the support frame 3; a lifting slot 33 is provided on the top of the second vertical arm 32; a lifting seat 34 is slidably installed inside the lifting slot 33; the lifting seats 34 on both sides are fixedly connected to the two ends of the heat sealing knife 5; an electric push rod 35 is fixedly connected to the side of the second vertical arm 32 away from the rotating drum 4; the top of the electric push rod 35 is fixedly connected to the bottom surface of the lifting seat 34;

[0039] A material pressing unit is provided on the top of the rotating drum 4 on the side away from the material box 2; the material pressing unit includes a rotating arm 36; two rotating arms 36 are rotatably mounted on the two ends of the top of the rotating drum 4 on the side away from the material box 2; a No. 5 motor 37 is fixedly connected to the rotating shaft of one side of the rotating arm 36; the No. 5 motor 37 is fixedly connected to the inner wall of the rotating drum 4; a material pressing roller 38 is fixedly connected between the tops of the two rotating arms 36; a plurality of convex strips are fixedly connected around the outer ring of the material pressing roller 38;

[0040] During operation, when the material stripping plate 13 pushes the rotating drum 4 with the top opening of the medical paper-plastic packaging bag, the No. 4 motor 30 drives the No. 2 gear 31 to rotate, drives the half gear ring 28 to rotate, and drives the rotating drum 4 to rotate, so that the pressing unit rotates toward the material box 2. At the same time, the No. 5 motor 37 drives the rotating arm 36 and the pressing roller 38 to rotate upward, so that a gap is generated between the pressing roller 38 and the rotating drum 4; when the material stripping plate 13 presses the top opening of the medical paper-plastic packaging bag onto the outer wall of the rotating drum 4, the pressing roller 38 can just press the top opening of the medical paper-plastic packaging bag. At this time, the No. 5 motor 37 drives the rotating arm 36 and the pressing roller 38 to rotate downward, so that the pressing roller 38 cooperates with the outer wall of the rotating drum 4 to clamp the top opening of the medical paper-plastic packaging bag; then, the No. 4 motor 30 drives the No. 2 gear 31 to reverse, drives the half gear ring 28 and the rotating drum 4 to reverse, and drives the medical paper-plastic packaging bag to rotate. The medical paper-plastic packaging bag is taken out from the inside of the material box 2, and the top opening of the medical paper-plastic packaging bag is driven to move to the bottom of the heat-sealing knife 5. The electric push rod 35 drives the lifting seat 34 to descend along the lifting slot 33, and drives the heat-sealing knife 5 to descend to perform heat sealing. After the medical paper-plastic packaging bag is sealed, the electric push rod 35 pushes the lifting seat 34 and the heat-sealing knife 5 to rise. Then, the No. 4 motor 30 continues to drive the half gear ring 28 and the rotating drum 4 to rotate, driving the sealed medical paper-plastic packaging bag to rotate to the side of the rotating drum 4 away from the material box 2. At this time, the No. 5 motor 37 drives the rotating arm 36 and the pressing roller 38 to rotate upward, releasing the sealed medical paper-plastic packaging bag, so that the sealed medical paper-plastic packaging bag slides off. The automatic heat sealing of the medical paper-plastic packaging bag is thereby completed, reducing the workload of medical staff and facilitating the operation of medical staff.

[0041] like Figures 7 and 8 As shown, a pair of mounting grooves 39 are provided on the top of the rotating drum 4; a convex plate 40 is slidably installed inside the mounting groove 39; the convex plate 40 is fixed to the mounting groove 39 by bolts; one of the convex plates 40 away from the material box 2 matches the pressing roller 38; the other convex plate 40 matches the heat-sealing knife 5; by the cooperation of the convex plate 40 and the pressing roller 38, the strength of clamping the medical paper-plastic packaging bag is improved, and the probability of the medical paper-plastic packaging bag falling is reduced; by the cooperation of the convex plate 40 and the heat-sealing knife 5, the sealing effect of the medical paper-plastic packaging bag is improved.

[0042] like Figure 1 and Figure 7 As shown, a slide plate 41 is fixedly connected to the side of the support frame 3 away from the material box 2; the top of the slide plate 41 is in contact with the rotating drum 4; a hook is provided at the bottom of the slide plate 41; when working, the bag is hung on the hook at the bottom of the slide plate 41, and the slide plate 41 accurately controls the medical paper-plastic packaging bag to slide into the bag, thereby further facilitating the operation of medical personnel.

[0043] Working principle: adjust the height of the blocking rod 25 according to the specifications of the medical paper-plastic packaging bag, drive the slide column 24 to slide along the vertical cylinder 23, and use the fixing pin 27 to penetrate the fixing slot 26 to fix and lock the slide column 24 and the vertical cylinder 23. At the same time, adjust the distance between the blocking unit and the rotating cylinder 4, and fix the horizontal plate 22 by passing the fixing bolt 21 through the adjustment slot 20;

[0044] After the medical staff of the pharmacy packs the drugs into the medical paper-plastic packaging bags, they vertically place the multiple medical paper-plastic packaging bags inside the material box 2; the No. 1 motor 9 drives the screw 8 to rotate, drives the push plate 7 to slide along the slide groove 6, and pushes the medical paper-plastic packaging bags to move toward the rotating drum 4;

[0045] When the push plate 7 pushes the medical paper-plastic packaging bag close to the rotating drum 4, at this time, the extended slide bar 16 drives the material-diverting plate 13 to be at a high position, and the medical paper-plastic packaging bag passes under the material-diverting plate 13. The No. 3 motor 18 drives the No. 1 gear 19 to rotate, driving the extended slide bar 16 to slide downward along the slide hole 15, pushing the material-diverting plate 13 down to the side of the medical paper-plastic packaging bag away from the rotating drum 4. After that, the No. 2 motor 12 drives the No. 1 cross bar 11 to rotate, driving the material-diverting plate 13 to rotate. At the same time, the extended slide bar 16 pushes the material-diverting plate 13 to extend, pushing the top opening of the medical paper-plastic packaging bag toward the outer wall of the rotating drum 4, and pressing the top opening of the medical paper-plastic packaging bag onto the outer wall of the rotating drum 4;

[0046] When the material-shifting plate 13 pushes the drum 4 with the top opening of the medical paper-plastic packaging bag, the No. 4 motor 30 drives the No. 2 gear 31 to rotate, drives the half gear ring 28 to rotate, and drives the drum 4 to rotate, so that the pressing unit rotates toward the material box 2. At the same time, the No. 5 motor 37 drives the rotating arm 36 and the pressing roller 38 to rotate upward, so that a gap is generated between the pressing roller 38 and the drum 4; when the material-shifting plate 13 presses the top opening of the medical paper-plastic packaging bag onto the outer wall of the drum 4, the pressing roller 38 can just press the top opening of the medical paper-plastic packaging bag. At this time, the No. 5 motor 37 drives the rotating arm 36 and the pressing roller 38 to rotate downward, so that the pressing roller 38 cooperates with the outer wall of the drum 4 to clamp the top opening of the medical paper-plastic packaging bag; then, the No. 4 motor 30 drives the No. 2 gear 31 to reverse, drives the half gear ring 28 and the drum 4 to reverse, and drives the medical paper-plastic packaging bag to rotate. The medical paper-plastic packaging bag is taken out from the inside of the material box 2, and the top opening of the medical paper-plastic packaging bag is driven to move to the bottom of the heat-sealing knife 5. The electric push rod 35 drives the lifting seat 34 to descend along the lifting slot 33, and drives the heat-sealing knife 5 to descend to perform heat sealing. After the medical paper-plastic packaging bag is sealed, the electric push rod 35 pushes the lifting seat 34 and the heat-sealing knife 5 to rise. Then, the No. 4 motor 30 continues to drive the half gear ring 28 and the rotating drum 4 to rotate, driving the sealed medical paper-plastic packaging bag to rotate to the side of the rotating drum 4 away from the material box 2. At this time, the No. 5 motor 37 drives the rotating arm 36 and the pressing roller 38 to rotate upward, releasing the sealed medical paper-plastic packaging bag, so that the sealed medical paper-plastic packaging bag slides off. The medical paper-plastic packaging bag is thereby sealed, and leakage of medicines inside the medical paper-plastic packaging bag is avoided.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic heat sealing device for medical paper-plastic packaging bags, characterized by: The invention comprises a bottom plate (1); the bottom plate (1) is placed and fixed on a table; a material box (2) is fixedly connected to one end of the top surface of the bottom plate (1); a medical paper-plastic packaging bag is placed inside the material box (2); a conveying unit is arranged inside the material box (2), and the conveying unit is used to convey the medical paper-plastic packaging bag; a support frame (3) is fixedly connected to the other end of the top surface of the bottom plate (1); a rotating rod is rotatably mounted on the top of the support frame (3); a rotating drum (4) is rotatably mounted on the outer ring of the rotating rod of the support frame (3); a lifting unit is arranged on the top of the support frame (3), and a heat sealing knife (5) is arranged on the lifting unit; The conveying unit comprises a slide groove (6); a plurality of the slide grooves (6) are provided on the bottom surface of the material box (2); a push plate (7) is slidably mounted on the top of the plurality of the slide grooves (6); a screw rod (8) is rotatably mounted in the middle of the bottom surface of the material box (2); the screw rod (8) passes through the bottom of the push plate (7), and the screw rod (8) and the push plate (7) are threadedly matched; a No. 1 motor (9) is fixedly connected to one end of the bottom surface of the material box (2) away from the support frame (3); the rotating shaft of the No. 1 motor (9) is fixedly connected to the screw rod (8); A material-dispensing unit is provided at the top of one end of the material box (2) close to the rotating drum (4); the material-dispensing unit comprises a No. 1 vertical arm (10); a pair of the No. 1 vertical arms (10) are fixedly connected to both sides of one end of the material box (2) close to the rotating drum (4); a No. 1 cross bar (11) is rotatably mounted at the top between the pair of the No. 1 vertical arms (10); a No. 2 motor (12) is fixedly connected to the top of one side of the No. 1 vertical arm (10); the rotating shaft of the No. 2 motor (12) is fixedly connected to the end of the No. 1 cross bar (11); an extension component is provided in the middle of the No. 1 cross bar (11); and a material-dispensing plate (13) is provided at the bottom of the extension component; The extension assembly comprises a mounting seat (14); the mounting seat (14) is fixedly connected to the middle outer ring of the No. 1 crossbar (11); a sliding hole (15) is provided on one side of the mounting seat (14); an extension slide rod (16) is slidably installed inside the sliding hole (15); the bottom of the extension slide rod (16) is bolted to the top surface of the material-pickup plate (13); a tooth groove (17) is provided on one side of the extension slide rod (16) close to the middle of the mounting seat (14); a No. 3 motor (18) is fixedly connected to the top surface of the mounting seat (14); a No. 1 gear (19) is fixedly connected to the outer ring of the rotating shaft of the No. 3 motor (18); the No. 1 gear (19) is meshed with the tooth groove (17); A material pressing unit is provided on the side of the top of the rotating drum (4) away from the material box (2); the material pressing unit comprises a rotating arm (36); the two rotating arms (36) are rotatably mounted on the two ends of the top of the rotating drum (4) away from the material box (2); a No. 5 motor (37) is fixedly connected to the rotating shaft of one side of the rotating arm (36); the No. 5 motor (37) is fixedly connected to the inner wall of the rotating drum (4); a material pressing roller (38) is fixedly connected between the tops of the two rotating arms (36); and a plurality of convex strips are fixedly connected around the outer ring of the material pressing roller (38).

2. The automatic heat sealing device for medical paper-plastic packaging bags according to claim 1, characterized in that: A blocking unit is provided at the middle of one end of the material box (2) close to the rotating drum (4); the blocking unit comprises an adjusting groove (20); a pair of the adjusting grooves (20) are provided at both sides of the bottom surface of one end of the material box (2) close to the rotating drum (4); a fixing bolt (21) is slidably mounted inside the adjusting groove (20); a horizontal plate (22) is provided on the top of the two fixing bolts (21); the bottom surface of the horizontal plate (22) is slidably matched with the bottom surface of the inner cavity of the material box (2); a vertical cylinder (23) is fixedly connected to the middle of the top surface of the horizontal plate (22); a sliding column (24) is slidably mounted inside the vertical cylinder (23); a blocking rod (25) is fixedly connected to the top of the sliding column (24); a plurality of fixed through grooves (26) are provided in the middle of the vertical cylinder (23) and the sliding column (24); a fixing pin (27) is slidably mounted inside the fixed through groove (26).

3. The automatic heat sealing device for medical paper-plastic packaging bags according to claim 1, characterized in that: A half gear ring (28) is fixedly connected to the bottom of one end of the inner ring of the rotating drum (4); a fixing plate (29) is fixedly connected to one side of the supporting frame (3) close to the half gear ring (28); a fourth motor (30) is fixedly connected to the bottom surface of the fixing plate (29); a second gear (31) is fixedly connected to the outer ring of the rotating shaft of the fourth motor (30); and the second gear (31) is meshed with the half gear ring (28).

4. The automatic heat sealing device for medical paper-plastic packaging bags according to claim 1, characterized in that: The lifting unit comprises a No. 2 vertical arm (32); two No. 2 vertical arms (32) are bolted to the tops of both sides of the support frame (3); a lifting slot (33) is provided at the top of the No. 2 vertical arm (32); a lifting seat (34) is slidably mounted inside the lifting slot (33); the lifting seats (34) on both sides are fixedly connected to the two ends of the heat sealing knife (5); an electric push rod (35) is fixedly connected to the side of the No. 2 vertical arm (32) away from the rotating drum (4); and the top end of the electric push rod (35) is fixedly connected to the bottom surface of the lifting seat (34).

5. The automatic heat sealing device for medical paper-plastic packaging bags according to claim 1, characterized in that: A pair of mounting grooves (39) are formed on the top of the rotating drum (4); a convex plate (40) is slidably mounted inside the mounting groove (39); the convex plate (40) is fixed to the mounting groove (39) by bolts; one of the convex plates (40) away from the material box (2) matches the pressing roller (38); and the other convex plate (40) matches the heat sealing knife (5).

6. The automatic heat sealing device for medical paper-plastic packaging bags according to claim 1, characterized in that: A sliding plate (41) is fixedly connected to a side of the support frame (3) away from the material box (2); the top of the sliding plate (41) is in contact with the rotating drum (4); and a hook is provided at the bottom of the sliding plate (41).

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