KR20210058226A - Apparatus for sealing medicine packing sheet - Google Patents

Abstract

Disclosed is an apparatus for sealing a medicine packing sheet which forms a width direction fusion area crossing the longitudinal direction of a medicine packing sheet folded and supplied in two layers and a longitudinal fusion area parallel with the longitudinal direction of the medicine packing sheet to form a plurality of medicine pockets on the medicine packing sheet. An objective of the present invention is to provide an apparatus for sealing a medicine packing sheet which improves the productivity of medicine packing sheet sealing work and lowers error rates during work. The apparatus for sealing a medicine packing sheet comprises: a first and a second width direction fusion roller interposing a medicine packing sheet therebetween and rotating to form a width direction fusion area; a first and a second longitudinal fusion roller interposing the medicine packing sheet therebetween and rotating to form a longitudinal fusion area; a first electric motor providing power for rotating the first and second width direction fusion rollers; and a second electric motor providing power for rotating the first and second longitudinal fusion rollers. The first width direction fusion roller and the first longitudinal fusion roller rotate around a virtual first axis, and the second width direction fusion roller and the second longitudinal fusion roller rotate around a second axis parallel with the first axis.

Description

Apparatus for sealing medicine packing sheet}

The present invention relates to a device for automatically sealing a drug packaging paper into which a drug is injected once in a drug packaging device that accommodates a large amount of various drugs inside and automatically packs and discharges one dose at a time according to a prescription.

A drug packaging device refers to a device that automatically discharges a prescribed drug according to a patient's illness and automatically packs a dose at a time, and is used in large hospitals or pharmacies. The drug packaging device includes a plurality of drug cassettes for dividing and receiving a plurality of drugs (tablet medicine) by type, and distributing various types of drugs from them and supplying them once at a time, and a drug supply unit that is supplied from the drug supply unit. It is provided with a drug packaging unit for packaging the drug for each dose. The pharmaceutical packaging unit includes a pharmaceutical packaging paper sealing device that separates and seals the pharmaceutical packaging paper supplied without interruption by a space in which a single dose of medicine is accommodated.

Korean Patent Publication No. 10-2016-0100551 discloses an example of a conventional pharmaceutical packaging paper sealing device. The conventional pharmaceutical packaging paper sealing device is configured to selectively interlock or separate the fusion members that fuse the length direction and the width direction of the medicine packaging paper with one electric motor to adjust the width direction fusion distance of the medicine packaging paper. Specifically, a protrusion is provided in the fusing member for fusing the drug wrapper in the width direction, and a fitting hole into which the protrusion is inserted is formed in the fusing member for fusing the drug wrapper in the length direction, so that the protrusion is the fitting groove. When inserted into the width direction fusion member is configured to rotate together along the longitudinal direction fusion member so that the drug wrapping paper is fused in the width direction. However, a time interval is required for the protrusion to be aligned with the fitting groove, and thus the speed of the drug packaging operation may be delayed and productivity may be lowered. In addition, the configuration of aligning and fitting the protrusions with the fitting grooves is complicated, and errors may frequently occur during operation, resulting in poor reliability.

Republic of Korea Patent Publication No. 10-2016-0100551

The present invention is a pharmaceutical packaging paper sealing device capable of changing the gap between the sealing area in the width direction parallel to the width direction of the pharmaceutical packaging paper, the productivity of the pharmaceutical packaging paper sealing operation is improved, and the error occurrence rate during operation is reduced. to provide.

The present invention provides a longitudinal fusion region parallel to the length direction of the drug packaging paper and a width direction fusion region intersecting the length direction of the drug packaging paper in order to form a plurality of drug pockets on the drug packaging paper that is folded into two layers. A device for forming, wherein the first and second widthwise fusion rollers are interposed and rotated to form the widthwise fusion region by interposing the drug wrapper, and the longitudinal fusion region is formed by rotating the drug wrapper between them. A first electric motor that provides power to rotate the first and second longitudinal fusion rollers, the first and second width direction fusion rollers, and the power to rotate the first and second longitudinal fusion rollers A second electric motor is provided, wherein the first width direction fusion roller and the first longitudinal direction fusion roller rotate around a virtual first axis, and the second width direction fusion roller and the second longitudinal direction fusion roller are It provides a pharmaceutical packaging paper sealing device that rotates about a second axis parallel to the first axis.

A shaft receiving groove dug along the first axis is formed in the first longitudinal fusion roller, and a shaft accommodating groove dug along the second axis is formed in the second longitudinal fusion roller. The first widthwise fusion roller includes a connecting shaft that is rotatably fitted with the first longitudinal fusion fusion roller in the shaft receiving groove of the first longitudinal fusion fusion roller, and the second widthwise fusion roller is the second A connection shaft may be provided that is fitted into the shaft receiving groove of the second longitudinal fusion roller so as to be rotatable with respect to the longitudinal fusion roller.

Each of the first and second widthwise fusion rollers includes a pair of widthwise fusion surfaces for contacting and heating the drug packaging paper so that the widthwise fusion region is formed, a pair of non-contact surfaces not in contact with the drug packaging paper, and A pair of cutters installed on the pair of fusion surfaces in the width direction may be provided in order to form a perforation line in the fusion region in the width direction.

The pharmaceutical packaging paper sealing device of the present invention includes a first pusher for elastically pressing one of the first and second widthwise fusion rollers to be in close contact with the other, and one of the first and second longitudinal fusion rollers. It may further include a second pusher for elastically pressing so as to be in close contact with the other.

The pharmaceutical packaging paper sealing device of the present invention further includes a pair of pulling rollers for pulling the pharmaceutical packaging paper in the traveling direction by rotating and interposing the longitudinal fusion area of the pharmaceutical packaging paper therebetween, and the one The pair of pulling rollers may rotate by the driving force of the second electric motor.

The first electric motor and the second electric motor may be a brushless direct current motor (BLDC).

The pharmaceutical packaging paper sealing device of the present invention includes at least one transverse direction fusion roller detection sensor measuring the rotation angle and rotation speed of the first and second width direction fusion rollers, and the first and second longitudinal directions At least one longitudinal fusion roller detection sensor for measuring the rotation angle and rotation speed of the fusion roller may be further provided.

The pharmaceutical packaging paper sealing device of the present invention may further include a pharmaceutical packaging paper cutting unit for cutting the pharmaceutical packaging paper in which the plurality of drug pockets are formed.

The drug packaging paper cutting unit includes a fixed blade fixedly installed in front of the first and second width direction fusion rollers and the first and second longitudinal direction fusion rollers, and a hinge at one end of the fixed blade. The rotating blade rotates between the open posture and the closed posture overlapping with the fixed blade, and the rotating blade rotates between the open posture and the closed posture. A third electric motor providing power, the drug packaging paper passing through the first and second width direction fusion rollers and the first and second longitudinal fusion rollers is discharged through the fixed blade without bending It may be provided with a supporting discharge guide.

The medicine packaging paper cutting unit further includes a rotating blade detection sensor for detecting whether the rotating blade is in the open position, and the rotating blade rotating from the open position to the closed position returns to the open position for a predetermined time. When the rotation blade detection sensor detects that the rotation blade has not been performed, the third electric motor may drive the rotation blade so that the rotation blade rotates in a reverse direction to return to the open position.

In the pharmaceutical packaging paper sealing device of the present invention, although the width direction fusion roller and the longitudinal direction fusion roller rotate coaxially, they are driven by separate electric motors, respectively. In other words, the rotational speed and rotation angle of the fusion roller in the width direction and the fusion roller in the length direction are not interlocked with each other, so the gap between the fusion area in the width direction of the drug packaging paper, that is, the size of the drug pocket can be variously changed, and automatic drug packaging operation Productivity is improved. In addition, since the structure is simple, the occurrence of operation errors of the width direction fusion roller and the length direction fusion roller decreases, thereby improving the reliability of the drug packaging operation.

According to a preferred embodiment of the present invention having a medicine wrapper cutting unit, it is possible to cut the medicine wrapper even if the pivoting blade does not rotate quickly, so that noise is reduced, and if the operator's hand is caught, the pivoting blade stops and returns to the open position. To prevent worker accidents.

1 is a perspective view showing a pharmaceutical packaging paper sealing device according to an embodiment of the present invention.
2 and 3 are perspective views illustrating the drug packaging paper cutting unit removed from FIG. 1, and FIG. 2 is a view viewed from the right side of the front, and FIG. 3 is a view viewed from the front left side.
4 is an exploded perspective view illustrating the first and second roller assemblies of FIGS. 2 and 3.
FIG. 5 is a perspective view showing a drug package having a plurality of drug pockets passing through the drug package sealing device according to an embodiment of the present invention.
6 is a perspective view showing an enlarged view of the drug packaging paper cutting unit provided in FIG. 1.

Hereinafter, an apparatus for sealing a pharmaceutical packaging paper according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Terms used in the present specification are terms used to properly express preferred embodiments of the present invention, which may vary depending on the intention of a user or operator or customs in the field to which the present invention belongs. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

1 is a perspective view showing a drug wrapping paper sealing device according to an embodiment of the present invention, FIGS. 2 and 3 are perspective views showing the drug wrapping paper cutting unit removed from FIG. 1, and FIG. 2 is viewed from the right side of the front side. It is a view, FIG. 3 is a view viewed from the front left side, FIG. 4 is an exploded perspective view showing the first and second roller assemblies of FIGS. 2 and 3, and FIG. 5 is It is a perspective view showing a drug wrapper passing through the drug wrapper sealing device and having a plurality of drug pockets. 1 to 4 together, the pharmaceutical packaging paper sealing device 10 according to an embodiment of the present invention includes first and second roller assemblies 25 and 45, and first and second pulling rollers 70 and 72 , A first electric motor 23, a second electric motor 24, and a medicine wrapper cutting unit 110.

5, the drug wrapper 4 is folded in two folds so that both corners 5 in the width direction face each other before entering between the first and second roller assemblies 25 and 45, and the first second roller While passing through the assemblies 25 and 45, the fusion zone 7 in the width direction and the fusion zone 8 in the longitudinal direction are formed to form a sealed medicine pocket 6 in which a single dose of medicine is accommodated. Immediately before the medicine pocket 6 is sealed, that is, just before the medicine wrapper 4 enters between the first and second roller assemblies 25, 45, one dose of the medicine 1, 2 according to the prescription is It is automatically put into the drug packaging paper 4 folded in two layers, so that the drug pocket 6 is formed and the drugs 1 and 2 are accommodated in the drug pocket 6 at the same time. A perforated line 9 is formed in the fusion area in the width direction so as to be easily separated for each of the drug pockets 6.

Referring again to Figs. 1 to 4, the pharmaceutical packaging paper sealing device 10 includes the longitudinal fusion region 8 (refer to Fig. 5) and the width direction fusion region 7 on the medicament packaging paper 4 (refer to Fig. 5). ) (See Fig. 5), and forming a perforated line 9 (see Fig. 5) in the fusion region 7 in the width direction. The first roller assembly 25 includes a first crosswise fusion roller 26 and a first longitudinal fusion roller 36 connected along an imaginary first axis R1. The second roller assembly 45 includes a second transverse direction fusion roller 46 and a second longitudinal direction fusion roller 56 connected along an imaginary second axis R2 parallel to the first axis R1. do.

The first and second widthwise fusion rollers 26 and 46 interpose the medicine wrapper 4 and rotate in close contact to form a widthwise fusing region 7 crossing the lengthwise direction of the medicine wrapper 4. Adjacent widthwise fusion regions 7 are formed to be spaced apart along the length direction of the drug wrapper 4. A heater (not shown) that generates heat when power is supplied is embedded in the first and second widthwise fusion rollers 26 and 46. The first and second widthwise fusion rollers 26 and 46 are rotatably supported on the first roller support frame 12.

The first and second longitudinal fusion rollers 36 and 56 interpose the drug packaging paper 4 and rotate in close contact to form a longitudinal fusion region 8 parallel to the longitudinal direction of the drug packaging paper 4. A heater (not shown) that generates heat when power is supplied is embedded inside the first and second longitudinal fusion rollers 36 and 56. The first and second longitudinal fusion rollers 36 and 56 are rotatably supported on the second roller support frame 15. The first and second roller support frames 12 and 15 are fixed to both ends of the connection frame 11 and are connected to each other.

The first and second longitudinal fusion rollers 36 and 56, respectively, have a flange 37 and 57 having a diameter expanded in a disk shape so as to be in close contact with each other with a drug wrapping paper 4 interposed therebetween. , And frame through shafts 40 and 60 extending along the first and second axes R1 and R2 so as to penetrate the second roller support frame 15. The longitudinal fusion region 8 is formed by the heat transferred to the drug wrapper 4 through the flanges 37 and 57. Bearings 41 and 61 are fitted to the frame through shafts 40 and 60 so that friction is minimized when the first and second longitudinal fusion rollers 36 and 56 rotate with respect to the second roller support frame 15. Lose. Shaft accommodating grooves dug along the first and second axes R1 and R2 on the side surfaces of the flanges 37 and 57 facing the first and second widthwise fusion rollers 26 and 46 (38, 58) is formed.

The first and second widthwise fusion rollers 26 and 46 are intermittently adhered to each other with the drug wrapper 4 interposed therebetween to form the widthwise fusion zone 7 by heating the drug wrapper 4 To form a pair of fusion surfaces 27 and 47 in the width direction, a pair of non-contact surfaces 28 and 48 that do not contact the drug packaging paper 4, and the perforation line 9 (see Fig. 5). A pair of cutters (30, 50) installed on the pair of fusion surfaces (27, 47) in the width direction, and the diameter of the disk is expanded so that they are in close contact with each other without intervening the drug wrapping paper (4). It is provided with guide flanges (29, 49). Since the guide flanges 29 and 49 are always in close contact while the first and second transverse direction fusion rollers 26 and 46 rotate, the relative distance between the first and second transverse direction fusion rollers 26 and 46 The position remains constant. Each time the first and second widthwise fusion rollers 26 and 46 rotate half a turn, a widthwise fusion region 7 is formed on the drug wrapping paper 4.

The first and second widthwise fusion rollers 26 and 46 extend along the first and second axes R1 and R2 so as to penetrate the first roller support frame 12, respectively. ), and connecting shafts 32 and 52 fitted into the shaft receiving grooves 38 and 58 of the first and second longitudinal fusion rollers 36 and 56. Bearings (33, 53) are fitted to the frame through shafts (31, 51) so that friction is minimized when the first and second widthwise fusion rollers (26, 46) rotate with respect to the first roller support frame (12). Lose. In addition, the first and second transverse direction fusion rollers 26 and 46 are rotatable with respect to the first and second longitudinal fusion rollers 36 and 56, and the connection shaft 32 so that friction is minimized even during rotation. , 52) are fitted with bearings (34, 35, 54, 55).

In the first roller support frame 12, a first width direction fusion roller 26 is provided in a second width direction fusion roller 46 so that the first width direction fusion roller 26 is in close contact with the second width direction fusion roller 46. A first pusher 63 is installed to elastically press it toward. Specifically, the first pusher 63 closely presses the outer ring of the bearing 33 fitted in the frame through shaft 31, and has a concave curved surface 64 so that the contact area with the outer ring of the bearing 33 increases. do. The coil spring 65 for elastically pressing the first pusher 63 is inserted into a spring groove 13 provided in the first roller support frame 12. The spring groove 13 is closed after the coil spring 65 is inserted.

The second roller support frame 15 includes a first longitudinal fusion roller 36 and a second longitudinal fusion roller 56 so that the first longitudinal fusion roller 36 is in close contact with the second longitudinal fusion roller 56. A second pusher 66 is installed to elastically press it toward. Specifically, the second pusher 66 closely presses the outer ring of the bearing 41 fitted in the frame through shaft 40, and has a concave curved surface 67 so that the contact area with the outer ring of the bearing 41 increases. do. The coil spring 68 for elastically pressing the second pusher 66 is inserted into the spring groove 16 provided in the second roller support frame 15. The spring groove 16 is closed after the coil spring 68 is inserted.

The first electric motor 23 provides power to rotate the first and second widthwise fusion rollers 26 and 46 and is supported by the first motor support frame 18. The second electric motor 24 provides power to rotate the first and second longitudinal fusion rollers 36 and 56, and a second motor support frame 21 spaced apart from the first motor support frame 18 Is supported by The pharmaceutical packaging paper sealing device 10 is a plate in which the first motor support frame 18 and the second motor support frame 21 are fixedly supported on one side, and the connection frame 11 is fixedly supported on the opposite side. A shaped frame (not shown) may be further provided.

The power of the first electric motor 23 is transmitted to the first and second widthwise fusion rollers 26 and 46 by a plurality of gears 76, 77, 78, 79, and 80 engaged therein. Specifically, a gear 76 coaxially connected to a rotating shaft (not shown) of the first electric motor 23 is engaged with the intermediate gear 77 rotatably supported by the first motor support frame 18, , The intermediate gear 78 rotatably supported by the first roller support frame 12 is engaged with the intermediate gear 77 of the first motor support frame 18, and the frame of the second widthwise fusion roller 46 The second widthwise fusion roller drive gear 79 coaxially connected to the through shaft 51 is engaged with the intermediate gear 78, and is coaxially connected to the frame through shaft 31 of the first widthwise fusion roller 26. 1 The width direction fusion roller drive gear 80 is engaged with the second width direction fusion roller drive gear 79.

The power of the second electric motor 24 is transmitted to the first and second longitudinal fusion rollers 36 and 56 by a plurality of gears 83, 84, 85, 86, and 87 meshed. Specifically, a gear 83 coaxially connected to a rotating shaft (not shown) of the second electric motor 24 is engaged with the intermediate gear 84 rotatably supported by the second motor support frame 21, , The intermediate gear 85 rotatably supported by the second roller support frame 15 is engaged with the intermediate gear 84 of the second motor support frame 21, and the frame of the second longitudinal fusion roller 56 The second longitudinal fusion roller drive gear 86 coaxially connected to the through shaft 60 is engaged with the intermediate gear 85, and is coaxially connected to the frame through shaft 40 of the first longitudinal fusion roller 36. 1 The longitudinal fusion roller drive gear 87 is engaged with the second longitudinal fusion roller drive gear 86.

The first electric motor 23 and the second electric motor 24 may be brushless direct current motors (BLDC). BLDC motors can precisely control the rotational speed of the rotating shaft and have less risk of electric shock than AC motors. Accordingly, the rotation speed and rotation angle of the width direction fusion rollers 26 and 46 and the rotation speed and rotation angle of the longitudinal direction fusion rollers 36 and 56 are independently controlled so as not to be interlocked with each other, so that the width direction fusion roller 26 , 46) and the longitudinal fusion rollers 36 and 56 rotate smoothly and accurately, while the width direction fusion region 7, the perforation line 9, and the longitudinal fusion region 8 are clearly formed. In addition, the spacing between the fusion regions 7 in the width direction, that is, the size of the drug pocket 6 can be variously changed. In addition, a mechanical structure linking the rotation of the transverse fusion rollers 26 and 46 to the rotation of the longitudinal fusion rollers 36 and 56 is unnecessary. The operation error of the longitudinal fusion rollers 36 and 56 is reduced, thereby improving the reliability of the drug packaging operation.

The drug packaging paper sealing device 10 is interposed between the longitudinal fusion region 8 of the drug packaging paper 4 that has passed through the first and second roller assemblies 25 and 45 and rotates in close contact with each other to close the medicine packaging paper 4. It further includes first and second pulling rollers 70 and 72 pulling in the traveling direction. The outer circumferential surfaces of the first and second pulling rollers 70 and 72 are coated with a material such as silicone rubber so that they do not slip with respect to the drug wrapper 4, that is, slip is suppressed. do. The first pulling roller 70 is rotatably supported on the second roller support frame 15 by a coaxially connected first pulling roller shaft 71, and the second pulling roller 72 is a coaxially connected second pulling roller shaft. It is rotatably supported by the 2nd roller support frame 15 by (73).

The first and second pulling rollers 70 and 72 rotate by the power of the second electric motor 24. Specifically, the frame outer gear 89 and the frame inner gear 90 are fixedly coupled to the pulling roller drive shaft 74 which passes through the second roller support frame 15 and is rotatably supported thereto. The frame outer gear 89 is disposed outside the second roller support frame 15 and is engaged with the second longitudinal fusion roller driving gear 86. The frame inner gear 90 is disposed inside the second roller support frame 15 and is engaged with a second pulling roller drive gear 91 fixedly coupled to the second pulling roller shaft 73. The first pulling roller drive gear 92 fixedly coupled to the first pulling roller shaft 71 is engaged with the second pulling roller drive gear 91. Accordingly, when the second longitudinal fusion roller drive gear 86 rotates by the power of the second electric motor 24, the first and second pulling rollers 70 and 72 closely rotate.

On the other hand, the power of the first and second electric motors 23 and 24 is transmitted to the width direction fusion rollers 26 and 46 and the length direction fusion rollers 36 and 56, and transfer to the pulling rollers 70 and 72. Since the gears 76 to 80, 83 to 87, 89 to 92 are all plain gears, noise generation during the operation of the drug packaging paper sealing device 10 is reduced, and drug packaging paper due to vibration The skew and distortion of (4) are suppressed.

The pharmaceutical packaging paper sealing device 10 includes first and second width direction fusion roller detection sensors 93 and 95 that measure the rotation angle and rotation speed of the first and second width direction fusion rollers 26 and 46. ), and first and second longitudinal fusion roller detection sensors 100 and 102 for measuring the rotation angle and rotation speed of the first and second longitudinal fusion rollers 36 and 56. The first and second transverse direction fusion roller detection sensors 93 and 95 are supported by the first sensor support bracket 19 fixed to the first motor support frame 18, and the first and second longitudinal directions The fusion roller detection sensors 100 and 102 are fixed to the second sensor support bracket 22 fixed to the second motor support frame 21.

The first widthwise fusion roller detection sensor 93 may be an encoder. The gear 81 fixedly coupled to the encoder shaft 94 passing through the encoder 93 is engaged with the intermediate gear 77 supported by the first roller support frame 18. Accordingly, when the rotation shaft (not shown) of the first electric motor 23 rotates, the encoder shaft 94 also rotates, and the first and second width directions by the first widthwise fusion roller detection sensor 93 The rotation direction, rotation speed, and rotation angle of the fusion rollers 26 and 46 are measured. If the rotation direction, rotation speed, and rotation angle of the first and second width direction fusion rollers 26 and 46 measured by the first width direction fusion roller detection sensor 93 do not match a preset value, the preset A controller (not shown) of the pharmaceutical packaging paper sealing device 10 controls the operation of the first electric motor 23 to match the set value. Rotation of the second and second transverse direction fusion rollers 26 and 46 includes an operation in which the second and second transverse direction fusion rollers 26 and 46 rotate by half a turn and repeating a brief pause operation. .

The second width direction fusion roller detection sensor 95 is a photo sensor, and counts the number of rotation wheels of the first and second width direction fusion rollers 26 and 46, and the first and second width directions are fused. When the rotation of the rollers 26 and 46 is stopped unintentionally, the first and second transverse direction fusion rollers 26 and 46 rotate in reverse to indicate the origin angle at which the rotation of the rollers 26 and 46 returns. In other words, a disk-shaped sensing disk 98 is fixedly coupled to the encoder shaft 94 and rotates coaxially as the encoder shaft 94 rotates. A dent 99 is formed at one outer peripheral edge of the sensing disk 98, which is dug toward the center. The photo sensor 95 includes a light-emitting unit 96 for projecting light, and a light-receiving unit 97 for generating a detection signal by receiving the light projected from the light-emitting unit 96. Equipped. An outer peripheral portion of the sensing disk 98 is interposed between the light emitting portion 96 and the light receiving portion 97.

When the sensing disk 98 rotates due to the rotation of the rotating shaft of the first electric motor 23, the light projected from the light emitting unit 96 through the dent 99 every time the sensing disk 98 rotates. The light-receiving unit 97 receives light to generate a detection signal. Since the first and second widthwise fusion rollers 26 and 46 rotate by one rotation when the detection disk 98 rotates, the detection signal generated by the light receiving unit 97 is counted ( count), it is possible to determine how many rotations the first and second widthwise fusion rollers 26 and 46 are rotated. When it is determined how many rotations the first and second widthwise fusion rollers 26 and 46 are rotated, it is possible to determine how many drug pockets 6 (refer to FIG. 5) are formed.

When the dent 99 is positioned between the light-emitting part 96 and the light-receiving part 97 to generate a detection signal from the light-receiving part 97, the angles of the first and second widthwise fusion rollers 26 and 46 are the origin angles. Becomes. If, even if the operation of the first electric motor 23 is not intentionally stopped, the next detection signal is not generated until a certain time elapses after the detection signal is generated by the light receiving unit 97, the controller 1, 2) (See Fig. 5) It is considered that an accident such as pinching has occurred, and the first electric motor 23 until the first and second transverse fusion rollers 26 and 46 return to return to the origin angle. Reverse rotation of the rotating shaft. Meanwhile, the pharmaceutical packaging paper sealing device 10 of the embodiment shown in FIGS. 1 to 4 includes an encoder 93 and a photo sensor 95 as a transverse direction fusion roller detection sensor, but is not limited thereto, and only one of the two is provided. You may.

The first longitudinal fusion roller detection sensor 100 may be an encoder. The gear 88 fixedly coupled to the encoder shaft 101 passing through the encoder 100 is engaged with the intermediate gear 84 supported by the first roller support frame 21. Accordingly, when the rotation shaft (not shown) of the second electric motor 24 rotates, the encoder shaft 101 also rotates, and the first and second longitudinal directions by the first longitudinal fusion roller detection sensor 100 The rotation direction, rotation speed, and rotation angle of the fusion rollers 36 and 56 are measured. If the rotation direction, rotation speed, and rotation angle of the first and second longitudinal fusion rollers 36 and 56 measured by the first longitudinal fusion roller detection sensor 100 do not match a preset value, the preset A controller (not shown) of the pharmaceutical packaging paper sealing device 10 controls the operation of the second electric motor 24 to match the set value.

The second longitudinal fusion roller detection sensor 102 is a photo sensor, which counts the number of rotating wheels of the first and second longitudinal fusion rollers 36 and 56, and is fused in the first and second longitudinal directions. When the rotation of the rollers 36 and 56 is stopped unintentionally, the first and second longitudinal fusion rollers 36 and 56 rotate in reverse to indicate the origin angle at which the rotation of the rollers 36 and 56 is returned. Incidentally, a disk-shaped sensing disk 105 is fixedly coupled to the encoder shaft 101 and rotates coaxially as the encoder shaft 101 rotates. A dent 106 is formed at one outer peripheral edge of the sensing disk 105 toward the center. The photo sensor 102 includes a light-emitting unit 103 that projects light, and a light-receiving unit 104 that receives the light projected from the light-emitting unit 103 to generate a detection signal. Equipped. An outer peripheral portion of the sensing disk 105 is interposed between the light emitting portion 103 and the light receiving portion 104.

When the rotation shaft of the second electric motor 24 rotates and the detection disk 105 rotates, light projected from the light emitting unit 103 through the dent 106 every time the detection disk 105 rotates The light-receiving unit 104 receives light to generate a detection signal. Since the first and second longitudinal fusion rollers 36 and 56 rotate by one rotation when the detection disk 105 rotates is preset, the detection signal generated by the light receiving unit 104 is counted ( count), it is possible to determine how many rotations the first and second longitudinal fusion rollers 36 and 56 are rotated.

When the dent 106 is positioned between the light-emitting unit 103 and the light-receiving unit 104 to generate a detection signal from the light-receiving unit 104, the angles of the first and second longitudinal fusion rollers 36 and 56 are the origin angles. Becomes. If, even though the operation of the second electric motor 24 is not intentionally stopped, the next detection signal is not generated until a predetermined time elapses after the detection signal is generated by the light receiving unit 104, the controller is 1, 2) It is considered that an accident such as pinching has occurred, and the rotation shaft of the second electric motor 24 is reversed until the first and second longitudinal fusion rollers 36 and 56 return to return to the origin angle. Rotate. Meanwhile, the pharmaceutical packaging paper sealing device 10 of the embodiment shown in FIGS. 1 to 4 includes an encoder 100 and a photo sensor 102 as a longitudinal fusion roller detection sensor, but is not limited thereto, and only one of the two is provided. You may.

6 is a perspective view showing an enlarged view of the drug packaging paper cutting unit provided in FIG. 1. Referring to FIGS. 1 and 6 together, the drug packaging paper cutting unit 110 includes several to dozens of drugs connected by a drug packaging paper 4 (see FIG. 5) formed with a plurality of drug pockets 6 (see FIG. 5). Cut into pockets (6). For example, the drug packaging paper 4 may be cut so as to be classified according to the patient receiving the drug or the date of taking the drug.

The drug packaging paper cutting unit 110 includes a fixed blade fixedly installed in front of the first and second width direction fusion rollers 26 and 46 and the first and second longitudinal direction fusion rollers 36 and 56. 114), a rotating blade 116 coupled to one end of the fixed blade 114 by a hinge 119 to rotate, and a third electric motor providing power to rotate the rotating blade 116 (120), the first and second width direction fusion rollers (26, 46) and the first and second longitudinal direction fusion rollers (36, 56) passed through the drug wrapping paper (4), that is, the first and second rollers A discharge guide for supporting the medicine wrapper 4 so that the medicine wrapper 4 having the medicine pocket 6 formed therein passing between the assemblies 25 and 45 is not bent downward, but passes through the fixed blade 114 and is discharged. (guide) 112 is provided.

The fixed blade 114 and the third electric motor 120 are fixedly supported by a cutting unit support bracket 111 fixedly coupled to the second roller support frame 15. The discharge guide 112 is integrally formed with the cutting unit support bracket 111. The third electric motor 120 may precisely control the rotational speed of its own rotating shaft, and may be a BLDC motor having a lower risk of electric shock than an AC motor.

The rotating blade 116 is rotatable between an open posture in which the angle with the fixed blade 114 is maximized around the hinge 119 and a closed posture overlapping with the fixed blade 114. 1 and 6 disclose a rotating blade 116 in an open position. When the rotating blade 116 is in the open position, the medicine wrapping paper 4 passes through the upper side of the fixed blade 114, specifically between the fixed blade 114 and the rotating blade 116, and the rotating blade 116 When it is rotated in the open posture to become a closed posture overlapping with the fixed blade 114, a shearing force is applied to cut the drug wrapping paper 4.

The medicine wrapper cutting unit 110 is a means for transmitting the rotational power of the third electric motor 120 to the rotating blade 116, and includes a crank 121 and a link 123. The crank 121 is coupled to a rotation shaft (not shown) of the third electric motor 120 to rotate coaxially. The crank 121 has a link connection protrusion 122 connected to the link 123 at a position eccentric from its rotation center. A link slot 124 is formed at one end of the link 123 to allow the link connection protrusion 122 to flow. One end 117 of the rotating blade 116, specifically, one end 117 that does not overlap with the fixed blade 114 when in the closed position, can be pivoted to the other end of the link 123 Connected to each other. With this configuration, when the crank 121 rotates one turn in a clockwise or counterclockwise direction, the rotating blade 116 returns from the open position to the closed position and back to the open position.

The medicine wrapper cutting unit 110 further includes a rotating blade detection sensor 126 that detects whether the rotating blade 116 is in an open position. 1 and 6, the rotating blade detection sensor 126 is a photo sensor. A disk-shaped sensing disk 130 is fixedly coupled to the rotating shaft of the third electric motor 120 to rotate coaxially with the crank 121. A dent 131 is formed at an outer circumferential edge of the sensing disk 130 toward the center. The rotating blade detection sensor 126, that is, a photo sensor, receives a light-emitting unit 127 that projects light, and receives the light projected from the light-emitting unit 127 to generate a detection signal. It includes a light receiving unit 128 to generate. An outer peripheral portion of the sensing disk 130 is interposed between the light emitting portion 127 and the light receiving portion 128.

When the rotation shaft of the third electric motor 120 rotates and the detection disk 130 rotates, the light projected from the light emitting unit 127 through the dent 131 every time the detection disk 130 rotates The light-receiving unit 128 receives light to generate a detection signal. Therefore, whenever the detection signal is generated, the controller (not shown) of the pharmaceutical packaging paper sealing device 10 determines that the rotating blade 116 returns to the open position through the closed position.

If, even though the operation of the third electric motor 120 is not intentionally stopped, the next detection signal is not generated until a predetermined time elapses after the detection signal is generated by the light receiving unit 128, the controller is a fixed blade. It is regarded that an accident such as a drug (1, 2) (see Fig. 5) pinching or a finger pinching between the 114 and the rotating blade 116 has occurred, and until the rotating blade 116 returns to the open position. That is, the dent 131 is positioned between the light emitting unit 127 and the light receiving unit 128 to reversely rotate the rotation shaft of the third electric motor 120 until a detection signal is generated again.

The drug packaging paper cutting unit 110, even if only one blade, that is, the rotating blade 116 is rotated, and only the rotating blade 116 is rotated relatively slowly, sufficient shearing force to cleanly cut the drug packaging paper 4 is secured. Because of this, noise is significantly reduced during the cutting operation of the drug packaging paper 4, and safety accidents such as finger cutting occur even if the operator's finger is accidentally caught between the fixed blade 114 and the rotating blade 116. I never do that. In addition, the rotating blade detection sensor 126 is provided so that the rotating blade 116 is automatically returned to the open position even if the medicines (1, 2) or a finger are caught between the fixed blade 114 and the rotating blade 116. , Work can be resumed quickly, and damage to the third electric motor 120 is prevented.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those of ordinary skill in the art will appreciate that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true scope of protection of the present invention should be determined only by the appended claims.

4: pharmaceutical wrapper 10: pharmaceutical wrapper sealing device
23, 24, 120: electric motor 25, 45: roller assembly
26, 46: width direction fusion roller 36, 56: length direction fusion roller
110: medicine wrapping paper cutting unit 112: discharge guide
114: fixed blade 116: rotating blade

Claims (10)

An apparatus for forming a fusion region in a longitudinal direction parallel to the length direction of the drug packaging paper and a fusion region in the width direction crossing the longitudinal direction of the drug packaging paper in order to form a plurality of drug pockets on the drug packaging paper that is folded into two layers. ,
First and second widthwise fusion rollers interposed between and rotating the pharmaceutical wrapper to form the widthwise fusion region; First and second longitudinal fusion rollers interposed therebetween and rotating to form the longitudinal fusion region; A first electric motor providing power to rotate the first and second widthwise fusion rollers; And a second electric motor providing power to rotate the first and second longitudinal fusion rollers; and
The first width direction fusion roller and the first longitudinal direction fusion roller rotate around a virtual first axis, and the second width direction fusion roller and the second longitudinal direction fusion roller are second parallel to the first axis. A pharmaceutical packaging paper sealing device, characterized in that it rotates about an axis. The method of claim 1,
A shaft receiving groove dug along the first axis is formed in the first longitudinal fusion roller, and a shaft accommodating groove dug along the second axis is formed in the second longitudinal fusion roller,
The first transverse direction fusion roller includes a connection shaft that is rotatably fitted with respect to the first longitudinal direction fusion roller to a shaft receiving groove of the first longitudinal fusion roller, and the second width direction fusion roller includes the first longitudinal fusion roller. 2 A pharmaceutical packaging paper sealing device comprising: a connecting shaft fitted into the shaft receiving groove of the second longitudinal fusion roller so as to be rotatable with respect to the longitudinal fusion roller. The method of claim 1,
Each of the first and second widthwise fusion rollers includes a pair of widthwise fusion surfaces for contacting and heating the drug wrapper so that the widthwise fusion region is formed, a pair of non-contacting surfaces not in contact with the drug wrapper, and A pharmaceutical packaging paper sealing device comprising a pair of cutters installed on the pair of fusion surfaces in the width direction to form a perforation line in the fusion region in the width direction. The method of claim 1,
A first pusher for elastically pressing one of the first and second fusion rollers in close contact with the other; And a second pusher for elastically pressing one of the first and second longitudinal fusion rollers to be in close contact with the other. The method of claim 1,
Further comprising a pair of pulling rollers (pulling rollers) interposed between the longitudinal fusion region of the drug wrapper and rotated to pull the drug wrapper in its traveling direction,
The pharmaceutical packaging paper sealing device, characterized in that the pair of pulling rollers rotate by a driving force of the second electric motor. The method of claim 1,
The first electric motor and the second electric motor are BLDC motors (brushless direct current motor), characterized in that the pharmaceutical packaging paper sealing device. The method of claim 1,
At least one transverse direction fusion roller detection sensor for measuring a rotation angle and a rotation speed of the first and second width direction fusion rollers; And at least one longitudinal fusion roller detection sensor for measuring the rotation angle and rotation speed of the first and second longitudinal fusion rollers. The method of claim 1,
A pharmaceutical packaging paper sealing device further comprising a; pharmaceutical packaging paper cutting unit for cutting the pharmaceutical packaging paper having the plurality of drug pockets formed thereon. The method of claim 8,
The pharmaceutical packaging paper cutting unit includes a fixed blade fixedly installed in front of the first and second width direction fusion rollers and the first and second longitudinal direction fusion rollers, and a hinge at one end of the fixed blade. The rotating blade rotates between the open position and the closed position overlapping with the fixed blade, and the rotating blade rotates between the open position and the closed position. A third electric motor providing power, the drug wrapping paper passing through the first and second widthwise fusion rollers and the first and second longitudinal fusion rollers is discharged through the fixed blade without bending A pharmaceutical packaging paper sealing device, characterized in that it has a supporting discharge guide. The method of claim 9,
The drug packaging paper cutting unit further includes a rotating blade detection sensor that detects whether the rotating blade is in the open posture,
When the rotating blade detecting sensor detects that the rotating blade rotating from the open position to the closed position has not returned to the open position for a predetermined time, the rotating blade rotates in the reverse direction to return to the open position. The drug packaging paper sealing device, characterized in that the third electric motor drives the rotating blade.

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