Economical circulating line device

Abstract

The utility model provides an economical circulating line device, which belongs to the technical field of medicinal packaging bottle conveying and comprises a bottom plate, a circulating conveying mechanism, a plurality of supporting plates, a plurality of placing boxes, a positioning mechanism, a box existence judging sensor and a bottle existence judging sensor. The multiple supporting plates are connected to the circulating conveying mechanism at equal intervals, the multiple containing boxes are correspondingly connected to the multiple supporting plates, the interiors of the containing boxes are suitable for containing packaging boxes, and the packaging boxes are suitable for containing medicinal packaging bottles; the positioning mechanism is suitable for positioning the position of the supporting plate; the box existence judgment sensor is suitable for monitoring whether a packaging box exists on the supporting plate or not, and the bottle existence judgment sensor is suitable for monitoring whether a medicinal packaging bottle exists in the packaging box or not; and the cyclic conveying mechanism performs intermittent cyclic conveying. The economical circulating line device provided by the utility model has the technical effects that the structure is simple, the manufacturing cost is low, automatic transportation can be realized, the box body is accurately positioned, and the boxing operation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of conveying medicinal packaging bottles, and more specifically relates to an economical circulation line device. Background Art

[0002] A pharmaceutical packaging bottle refers to a bottle used to store medicines, such as an ampoule. An ampoule is a common pharmaceutical glass bottle, mainly used to hold liquid medicine, with a capacity of generally 1 to 25 ml. It is often used to store injectable drugs, vaccines, serums, etc. During the ampoule production process, the ampoule needs to be placed in a packaging box, and then the packaging box is transported to a packaging machine for packaging. During the boxing and packaging process of the pharmaceutical packaging bottles, due to the large number of pharmaceutical packaging bottles, they need to be transported by a conveying device, which can effectively save the labor of the staff. In the prior art, the transportation of the pharmaceutical packaging bottles during the boxing and packaging process uses traditional conveyors or conveyor lines. Since traditional conveying equipment is expensive and occupies a lot of funds, and traditional conveying equipment cannot accurately position the box body used to place the packaging bottles when transporting the pharmaceutical packaging bottles, it is necessary to manually adjust the position of the box body so that the boxing robot can automatically load the packaging bottles into the box body, which affects the efficiency of the operation of loading the packaging bottles into the box body. Utility Model Content

[0003] The purpose of the utility model is to provide an economical circulation line device, aiming to solve the technical problems that the conveying equipment used in the prior art for conveying medicinal packaging bottles is high in cost, cannot accurately locate the position of the box body, and affects the box loading speed.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide an economical circulation line device, comprising:

[0005] base plate;

[0006] A circulating conveying mechanism is connected to the bottom plate and has the freedom to move in a circulating conveying manner on the bottom plate;

[0007] A plurality of pallets are connected to the cyclic conveying mechanism at equal intervals, and the plurality of pallets are cyclically moved by means of the cyclic conveying mechanism;

[0008] A plurality of placement boxes are respectively connected to the upper ends of the plurality of support plates, wherein the interiors of the placement boxes are suitable for accommodating packaging boxes, and the packaging boxes are suitable for holding medicinal packaging bottles;

[0009] A positioning mechanism, connected to the base plate, adapted to position the support plate;

[0010] A box presence determination sensor is connected to the bottom plate and is suitable for detecting whether the packaging box is present on the support plate;

[0011] A bottle presence sensor is connected to the bottom plate and is suitable for detecting whether there are medicinal bottles in the packaging box;

[0012] The circulating conveying mechanism performs intermittent circulating conveying to place the medicinal packaging bottles into the plurality of packaging boxes one by one.

[0013] In a possible implementation, the cyclic transmission mechanism includes:

[0014] A driving wheel connected to the upper end of the base plate;

[0015] A driven wheel connected to the upper end of the base plate and spaced apart from the driving wheel;

[0016] A drive unit is connected to the lower end of the base plate, and a power output end passes through the base plate and is connected to the drive wheel, wherein the drive unit provides power to drive the drive wheel to rotate circumferentially;

[0017] The conveyor belt is arranged to wrap around the driving wheel and the driven wheel, and a plurality of the supporting plates are connected to the outer side wall of the conveyor belt at equal intervals.

[0018] In a possible implementation, a V-shaped groove is provided on the side of the support plate for positioning the support plate by the positioning mechanism, a limit bearing is provided at the bottom of the support plate, and a light-transmitting hole is provided in the middle of the support plate.

[0019] In a possible implementation, the placement box includes two symmetrical box bodies, the bottoms of the two box bodies are connected to the support plate, and the distance between the two box bodies can be adjusted to accommodate packaging boxes of different sizes.

[0020] In a possible implementation, the positioning mechanism includes:

[0021] A positioning drive cylinder is connected to the bottom end of the base plate and has the freedom of telescopic positioning;

[0022] A positioning connecting rod, one end of which is connected to the output end of the positioning drive cylinder;

[0023] a locating bearing connected to the other end of the locating link, the locating bearing being located above the base plate and adapted to be inserted into or removed from the V-shaped groove, the locating bearing being adapted to position the support plate after being inserted into the V-shaped groove, and being adapted to release the support plate after being removed from the V-shaped groove;

[0024] The positioning position judgment sensor is connected to the bottom end of the base plate and is suitable for monitoring the position of the positioning link to judge whether the positioning bearing is inserted into or leaves the V-shaped groove, thereby judging the positioning accuracy.

[0025] In a possible implementation, a plurality of universal ball bearings are provided at equal intervals on the upper end of the base plate in parallel with the moving track of the support plate. When the support plate moves, the plurality of support plates slide on the plurality of universal ball bearings.

[0026] In a possible implementation, a limit stop is connected to the upper end of the base plate. After the positioning mechanism positions the pallet, the limit stop is used to limit the pallet in a direction perpendicular to the moving direction of the pallet.

[0027] In one possible implementation, the box presence determination sensor is connected to the upper end of the base plate and is a reflective photoelectric sensor. The light path emitted by it passes through the light-transmitting hole. The box presence determination sensor is also suitable for receiving reflected light to determine whether the packaging box is on the pallet.

[0028] In a possible implementation, the bottle presence determination sensor includes:

[0029] a bracket connected to a side portion of the bottom plate;

[0030] A driving cylinder connected to the bracket and having the freedom to move toward the placement box;

[0031] The position sensing sensor is connected to the driving cylinder and is suitable for monitoring the extension and contraction position of the driving cylinder to determine whether there is a medicinal packaging bottle in the packaging box.

[0032] In a possible implementation, an origin sensing sensor is provided on the bottom plate. The origin sensing sensor is a proximity switch or a photoelectric sensor, and is used to enable the cyclic conveying mechanism to find the origin.

[0033] The beneficial effects of an economical circulation line device provided by the utility model are as follows: compared with the prior art, the economical circulation line device of the utility model comprises a bottom plate, a circulation conveying mechanism, a plurality of pallets, a plurality of placement boxes, a positioning mechanism, a box presence judgment sensor and a bottle presence judgment sensor; the circulation conveying mechanism is connected to the bottom plate and has the freedom of circulation and movement on the bottom plate; the plurality of pallets are connected to the circulation conveying mechanism at equal intervals, and the plurality of pallets form a circulation movement with the help of the circulation conveying mechanism; the plurality of placement boxes are respectively connected to the upper ends of the plurality of pallets, the interior of the placement boxes is suitable for accommodating packaging boxes, and the packaging boxes are suitable for The utility model contains medicinal packaging bottles; the positioning mechanism is connected to the bottom plate and is suitable for positioning the position of the pallet; the box presence judgment sensor is connected to the bottom plate and is suitable for monitoring whether there is a packaging box on the pallet; the bottle presence judgment sensor is connected to the bottom plate and is suitable for monitoring whether there is a medicinal packaging bottle in the packaging box; wherein, the circulating conveying mechanism performs intermittent circulating conveying to place medicinal packaging bottles one by one into multiple packaging boxes, which solves the technical problem that the conveying equipment is high in cost, cannot accurately position the position of the box body, and affects the box loading speed. The utility model has the technical effects of simple structure, low cost, automatic transportation, accurate positioning of the box body, and convenient box loading operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 A schematic structural diagram of an economical circulation line device provided by an embodiment of the utility model;

[0036] Figure 2 A schematic structural diagram of an economical circulation line device from another perspective provided by an embodiment of the present utility model;

[0037] Figure 3 A schematic diagram of the bottom view of an economical circulation line device provided by an embodiment of the present utility model;

[0038] Figure 4 A schematic structural diagram of a pallet, a placement box, and a packaging box of an economical circulation line device provided in an embodiment of the present utility model.

[0039] Description of reference numerals:

[0040] 1. Bottom plate; 11. Protective plate; 12. Universal ball bearing; 13. Limit block; 14. Origin sensing sensor; 2. Circular transmission mechanism; 21. Driving wheel; 22. Driven wheel; 23. Driving unit; 24. Conveyor belt; 3. Pallet; 31. V-groove; 32. Limit bearing; 33. Light hole; 4. Placement box; 41. Box body; 5. Positioning mechanism; 51. Positioning drive cylinder; 52. Positioning connecting rod; 53. Positioning bearing; 54. Positioning position judgment sensor; 6. Box presence judgment sensor; 7. Bottle presence judgment sensor; 71. Bracket; 72. Driving cylinder; 73. Position sensing sensor; 8. Packaging box. DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0042] Please also refer to Figures 1 to 4 Now, an economical circulation line device provided by the utility model is described. The economical circulation line device includes a base plate 1, a circulation conveying mechanism 2, multiple pallets 3, multiple placement boxes 4, a positioning mechanism 5, a box presence judgment sensor 6 and a bottle presence judgment sensor 7. The circulation conveying mechanism 2 is connected to the base plate 1 and has the freedom of circulation and movement on the base plate 1; multiple pallets 3 are connected to the circulation conveying mechanism 2 at equal intervals, and multiple pallets 3 form circulation movement with the help of the circulation conveying mechanism 2; multiple placement boxes 4 are respectively connected to the upper ends of multiple pallets 3, and the interior of the placement boxes 4 is suitable for accommodating packaging boxes 8, which are suitable for holding medicinal packaging bottles; the positioning mechanism 5 is connected to the base plate 1 and is suitable for positioning the position of the pallet 3; the box presence judgment sensor 6 is connected to the base plate 1 and is suitable for monitoring whether there is a packaging box 8 on the pallet 3; the bottle presence judgment sensor 7 is connected to the base plate 1 and is suitable for monitoring whether there is a medicinal packaging bottle in the packaging box 8; wherein the circulation conveying mechanism 2 performs intermittent circulation (usually conveying in one direction) to place medicinal packaging bottles one by one in the multiple packaging boxes 8.

[0043] The utility model provides an economical circulation line device. Compared with the prior art, the utility model connects a circulation conveying mechanism 2 to the bottom plate 1 to drive multiple pallets 3 to move in a circulation manner. The packaging box 8 is placed in the placement box 4, and then medicinal packaging bottles can be placed one by one in the multiple packaging boxes 8. The bottom plate 1 and the circulation conveying mechanism 2 are both composed of parts available on the market and have a low cost. The structure of the pallet 3 and the placement box 4 is simple and the cost is also low. The pallet 3 can be limited by the positioning mechanism 5, so that the position of the packaging box 8 is limited, which is conducive to loading medicinal packaging bottles into the packaging box 8. The utility model solves the technical problems of high cost of conveying equipment, inability to accurately position the box body, and affecting the boxing speed. The utility model has the technical effects of simple structure, low cost, automatic transportation, accurate box positioning, and convenient boxing operation.

[0044] In some embodiments, see Figures 1 to 4 The circulating conveying mechanism 2 includes a driving wheel 21, a driven wheel 22, a driving unit 23, and a conveyor belt 24. The driving wheel 21 is connected to the upper end of the base plate 1; the driven wheel 22 is connected to the upper end of the base plate 1 and is spaced apart from the driving wheel 21; the driving unit 23 is connected to the lower end of the base plate 1, and its power output end passes through the base plate 1 and is connected to the driving wheel 21. The driving unit 23 provides power to drive the driving wheel 21 in a circumferential direction; the conveyor belt 24 is arranged around the driving wheel 21 and the driven wheel 22, and a plurality of pallets 3 are connected to the outer wall of the conveyor belt 24 at equal intervals. The driving wheel 21 and the driven wheel 22 are of the same size and are both rotatably connected to the base plate 1. The power output of the driving unit 23 drives the driving wheel 21 to rotate, thereby rotating the conveyor belt 24, driving the driven wheel 22 to rotate. The rotation of the conveyor belt 24 drives the plurality of pallets 3 to rotate, thereby rotating the packaging boxes 8, thereby achieving the effect of sequentially loading the plurality of packaging boxes 8 with pharmaceutical bottles. The driving unit 23 may be a reduction motor, the rotation speed and start and stop of which can be controlled.

[0045] In some embodiments, see Figures 1 to 4 A V-shaped groove 31 is provided on the side of the pallet 3 for positioning the pallet 3 by the positioning mechanism 5. A limit bearing 32 is provided at the bottom of the pallet 3, and a light-transmitting hole 33 is provided in the middle of the pallet 3. The positioning mechanism 5 achieves positioning or non-positioning of the pallet 3 by engaging or disengaging with the V-shaped groove 31. A protective plate 11 is provided at the upper end of the base plate 1. The limit bearing 32 is in rolling or sliding contact with the protective plate 11. The length direction of the protective plate 11 is arranged along the length of the base plate 1. The protective plate 11 is used to limit the movement direction of the conveyor belt 24, that is, the conveyor belt 24 can only move along its preset direction and cannot move in other directions. In this embodiment, the length direction of the protective plate 11 is parallel to the direction of the line connecting the driving wheel 21 and the driven wheel 22. In this embodiment, six groups of pallets 3 are provided, corresponding to six groups of packaging boxes 8. A robot (a device for loading pharmaceutical packaging bottles into packaging boxes in the prior art) is used to load pharmaceutical packaging bottles into the multiple packaging boxes 8 one by one.

[0046] In order to realize the packaging boxes 8 of different sizes in the placement box 4, in some embodiments, refer to Figures 1 to 4 The placement box 4 comprises two symmetrical box bodies 41. The bottoms of the two box bodies 41 are both connected to the support plate 3. The distance between the two box bodies 41 can be adjusted to accommodate packaging boxes 8 of different sizes. The support plate 3 is provided with bolts that can be fixedly connected to the two box bodies 41. By adjusting the installation position of the box body 41 on the support plate 3, the distance between the two box bodies 41 can be adjusted, thereby accommodating packaging boxes 8 of different sizes (lengths) and facilitating the loading of pharmaceutical bottles into the packaging boxes 8.

[0047] In some embodiments, see Figures 1 to 4 The positioning mechanism 5 includes a positioning drive cylinder 51, a positioning connecting rod 52, a positioning bearing 53 and a positioning position judgment sensor 54. The positioning drive cylinder 51 is connected to the bottom end of the base plate 1 and has the freedom of telescopic positioning, that is, it has an output end with controllable telescopic length; one end of the positioning connecting rod 52 is connected to the output end of the positioning drive cylinder 51; the positioning bearing 53 is connected to the other end of the positioning connecting rod 52, and the positioning bearing 53 is located above the base plate 1 and is suitable for inserting into or leaving the V-shaped groove 31. After the positioning bearing 53 is inserted into the V-shaped groove 31, it is suitable for positioning the support plate 3, and after the positioning bearing 53 leaves the V-shaped groove 31, it is suitable for releasing the support plate 3; the positioning position judgment sensor 54 is connected to the bottom end of the base plate 1, and is suitable for monitoring the position of the positioning connecting rod 52 to determine whether the positioning bearing 53 is inserted into or leaves the V-shaped groove 31, thereby determining the positioning accuracy. By controlling the extension and contraction of the positioning drive cylinder 51, the push position of the positioning bearing 53 can be controlled, thereby realizing whether it can be inserted into the V-shaped groove 31. After being inserted, the support plate 3 can be positioned. If it is not inserted, it is not positioned. The positioning position judgment sensor 54 can monitor the movement position of the positioning link 52, so as to judge whether the positioning bearing 53 is inserted into the V-shaped groove 31. The positioning bearing 53 can rotate circumferentially in the horizontal plane. During the movement or insertion process, it can rotate, effectively preventing hard contact with the support plate 3. It is always in rolling or sliding contact with the support plate 3. Among them, the positioning position judgment sensor 54 can use a conventional sensor.

[0048] In some embodiments, see Figures 1 to 3At the top of the base plate 1, parallel to the moving path of the pallet 3, multiple universal ball transfers 12 are evenly spaced. During the movement of the pallet 3, the pallets 3 slide on the universal ball transfers 12. The universal ball transfers 12 are arranged along the moving direction of the pallet 3, allowing each pallet 3 to contact the universal ball transfers 12, thus ensuring stability during movement. The spacing of the universal ball transfers 12 can be appropriately set based on actual conditions. The spacing between the universal ball transfers 12 should be less than the length of the pallet 3, meaning that multiple universal ball transfers 12 are located beneath each pallet 3.

[0049] As an alternative embodiment, each of the multiple support plates 3 is connected to at least one universal ball 12 at its bottom end. During movement of the support plates 3, the universal ball 12 rolls against the upper end surface of the base plate 1, thereby also achieving stable movement of the support plates 3. The universal ball 12 is mounted at the bottom end of the support plate 3 so that it rolls against the upper end surface of the floor, thereby also supporting the support plates 3. Both of the above arrangements are feasible, and in actual operation, appropriate adjustments should be made based on the usage scenario.

[0050] In some embodiments, see Figures 1 to 4 , a limit stop 13 is connected to the upper end of the base plate 1. After the positioning mechanism 5 positions the pallet 3, the limit stop 13 is used to limit the pallet 3 in a direction perpendicular to the moving direction of the pallet 3. The limit stop 13 is a limit plate, which is set at a position corresponding to the positioning mechanism 5 and can be set close to the protective plate 11, that is, the position of the limit stop 13 and the positioning mechanism 5 can be regarded as aligned up and down. When the positioning bearing 53 is inserted into the V-groove 31, the pallet 3 can contact the limit stop 13. The limit stop 13 prevents the pallet 3 from moving in a direction perpendicular to the moving direction of the pallet 3. The setting of the limit stop 13 does not affect the normal transportation of the pallet 3. The limit stop 13 is long and its length is less than the length of the pallet 3.

[0051] In some embodiments, see Figures 1 to 4 The box presence sensor 6 is connected to the upper end of the base plate 1 and is a reflective photoelectric sensor. The light emitted by the sensor passes through the light-transmitting hole 33. The box presence sensor 6 is also adapted to receive reflected light to determine whether a packaging box 8 is present on the pallet 3. This sensor can detect or monitor the presence of a packaging box 8, preventing the absence of a packaging box 8 when loading a medicinal bottle. This could result in the bottle being unable to be loaded into the packaging box 8 or causing the medicinal bottle to fall. If the sensor detects the presence of a packaging box 8, the bottling process is initiated. If the packaging box 8 is not present, the bottling process is not initiated.

[0052] In some embodiments, see Figures 1 to 4Bottle presence sensor 7 comprises a bracket 71, a driving cylinder 72, and a position sensing sensor 73. Bracket 71 is connected to the side of base plate 1; driving cylinder 72 is connected to bracket 71 and has the freedom to push toward placement box 4. Position sensing sensor 73 is connected to driving cylinder 72 and is adapted to monitor the retracted and retracted position of driving cylinder 72 to determine whether a medicinal bottle is inside packaging box 8. Bracket 71 is L-shaped, with its lower end connected to base plate 1 and its upper end connected to driving cylinder 72. The retractable and retractable driving cylinder 72 allows position sensing sensor 73 to detect the position between the medicinal bottle and the sensor, thereby determining whether a medicinal bottle is inside packaging box 8. If the distance is far, it indicates that there is no medicinal bottle in packaging box 8; if the distance is close, it indicates that there is a medicinal bottle in packaging box 8. If there is a medicinal bottle, the bottling process is not initiated; otherwise, the bottling process is initiated.

[0053] In some embodiments, see Figures 1 to 4 , an origin sensing sensor 14 is provided on the bottom plate 1. The origin sensing sensor 14 is a proximity switch or a photoelectric sensor, which is used to enable the circular conveying mechanism 2 to find the origin. The circular conveying mechanism 2 has a starting point (origin). It rotates and transmits once and can return to the starting point. By rotating and transmitting in this way, the medicinal packaging bottles can be loaded into multiple packaging boxes 8 in sequence. When the circular conveying mechanism 2 stops running or circulates once, it needs to be positioned at the origin in order to accurately position the packaging box 8. The position of the circular conveying mechanism 2 can be located by this sensor, and then the position of the packaging box 8 can be located so that the medicinal packaging bottles can be accurately loaded. When the sensor detects a certain point on the circular conveying mechanism 2, this is the origin of the circular conveying mechanism 2, and the circular conveying mechanism 2 can be locked and fixed at this time.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An economical circulation line device, characterized in that: include: base plate; A circulating conveying mechanism is connected to the bottom plate and has the freedom to move in a circulating conveying manner on the bottom plate; A plurality of pallets are connected to the cyclic conveying mechanism at equal intervals, and the plurality of pallets are cyclically moved by means of the cyclic conveying mechanism; A plurality of placement boxes are respectively connected to the upper ends of the plurality of support plates, wherein the interiors of the placement boxes are suitable for accommodating packaging boxes, and the packaging boxes are suitable for holding medicinal packaging bottles; A positioning mechanism, connected to the base plate, adapted to position the support plate; A box presence determination sensor is connected to the bottom plate and is suitable for detecting whether the packaging box is present on the support plate; A bottle presence sensor is connected to the bottom plate and is suitable for detecting whether there are medicinal bottles in the packaging box; The circulating conveying mechanism performs intermittent circulating conveying to place the medicinal packaging bottles into the plurality of packaging boxes one by one.

2. An economical circulation line device as claimed in claim 1, characterized in that: The circulating transmission mechanism comprises: A driving wheel connected to the upper end of the base plate; A driven wheel connected to the upper end of the base plate and spaced apart from the driving wheel; A drive unit is connected to the lower end of the base plate, and a power output end passes through the base plate and is connected to the drive wheel, wherein the drive unit provides power to drive the drive wheel to rotate circumferentially; The conveyor belt is arranged to wrap around the driving wheel and the driven wheel, and a plurality of the supporting plates are connected to the outer side wall of the conveyor belt at equal intervals.

3. An economical circulation line device as claimed in claim 1, characterized in that: A V-shaped groove is provided on the side of the support plate for positioning the support plate by the positioning mechanism. A limited bearing is provided at the bottom of the support plate, and a light-transmitting hole is provided in the middle of the support plate.

4. An economical circulation line device as claimed in claim 1, characterized in that: The placement box includes two symmetrical box bodies, the bottoms of the two box bodies are connected to the support plate, and the distance between the two box bodies can be adjusted to accommodate packaging boxes of different sizes.

5. An economical circulation line device as claimed in claim 3, characterized in that: The positioning mechanism comprises: A positioning drive cylinder is connected to the bottom end of the base plate and has the freedom of telescopic positioning; A positioning connecting rod, one end of which is connected to the output end of the positioning drive cylinder; a positioning bearing connected to the other end of the positioning link, the positioning bearing being located above the base plate and adapted to be inserted into or removed from the V-shaped groove, the positioning bearing being adapted to position the support plate after being inserted into the V-shaped groove, and being adapted to release the support plate after being removed from the V-shaped groove; The positioning position judgment sensor is connected to the bottom end of the base plate and is suitable for monitoring the position of the positioning link to judge whether the positioning bearing is inserted into or leaves the V-shaped groove, thereby judging the positioning accuracy.

6. An economical circulation line device as claimed in claim 1, characterized in that: A plurality of universal balls are arranged at equal intervals on the upper end of the bottom plate and parallel to the moving track of the supporting plate. When the supporting plate moves, the supporting plates slide on the plurality of universal balls.

7. The economical circulation line device according to claim 1, characterized in that: The upper end of the bottom plate is connected to a limit stopper. After the positioning mechanism positions the support plate, the limit stopper is used to limit the support plate in a direction perpendicular to the moving direction of the support plate.

8. The economical circulation line device according to claim 3, characterized in that: The box presence judgment sensor is connected to the upper end of the bottom plate and is a reflective photoelectric sensor. The light path it emits passes through the light-transmitting hole. The box presence judgment sensor is also suitable for receiving reflected light to judge whether the packaging box is on the pallet.

9. The economical circulation line device according to claim 1, characterized in that: The bottle presence judgment sensor includes: a bracket connected to a side portion of the bottom plate; A driving cylinder is connected to the bracket and has the freedom to move toward the placement box; The position sensing sensor is connected to the driving cylinder and is suitable for monitoring the extension and contraction position of the driving cylinder to determine whether there is a medicinal packaging bottle in the packaging box.

10. The economical circulation line device according to claim 1, characterized in that: An origin sensing sensor is provided on the bottom plate. The origin sensing sensor is a proximity switch or a photoelectric sensor, and is used to enable the cyclic conveying mechanism to find the origin.

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