Planetary gear type box opening mechanism

Abstract

The utility model provides a planetary gear type box opening mechanism, which relates to the technical field of automatic packaging devices and comprises a fixing plate, a planetary rotating component, a paper box frame and a box opening adsorption component. A negative pressure shell is fixedly arranged on the back face of the fixing plate, the negative pressure shell is connected with an air extractor, each planet wheel is provided with an adsorption rod, the end of each adsorption rod is provided with a first suction nozzle part, and the first suction nozzle parts are communicated with the negative pressure shell; the paper box frame and the box opening adsorption assembly are both fixed to the front face of the fixing plate, and the box opening adsorption assembly comprises a second suction nozzle part with suction force. The carton opening mechanism has the advantages that the first suction nozzle portion of the carton opening mechanism can suck cartons stacked on a carton frame and drive the cartons to move, the second suction nozzle portion can suck the opposite faces of the cartons when the first suction nozzle portion moves the cartons to the second suction nozzle portion, the cartons are opened preliminarily, and therefore the success rate of follow-up collision carton opening of the cartons can be greatly improved, and the carton opening efficiency is improved. And smooth operation of the automatic boxing machine is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic packaging devices, in particular to a planetary gear type box opening mechanism. Background Art

[0002] A planetary gear type box opening mechanism is used for an automatic cartoning machine (for medicines). Its function is to open the stacked carton and place it in the groove of the transmission sprocket mechanism, so that the subsequent device can automatically place the medicine into the opened carton, and then the automatic cartoning machine can package it. After the stacked carton is removed by the existing planetary gear type box opening mechanism, the carton is only slightly opened in a natural state, and then it collides with the bottom of the groove of the transmission sprocket mechanism to completely open the carton. This box opening method has high requirements on the material of the carton, and its box opening success rate is not 100%. The higher the original opening degree of the carton, the higher the success rate of the subsequent collision box opening. When the inner sides of the carton are adhered to each other or the carton is deformed, the carton cannot be naturally slightly opened. At this time, its collision box opening success rate will be significantly reduced, affecting the operation of the automatic cartoning machine. Utility Model Content

[0003] In view of this, in order to improve the box opening rate of the box opening mechanism of the automatic box loading machine and enable the automatic box loading machine to operate automatically, the utility model provides a planetary gear box opening mechanism, including a fixed plate, a planetary rotating component, a carton frame and a box opening adsorption component;

[0004] A transmission sprocket mechanism is provided below the box opening mechanism, and a limiting groove is provided on the transmission sprocket mechanism to move with the transmission sprocket mechanism;

[0005] The fixed plate has a front and a back side that are arranged opposite to each other, an inner gear ring is arranged in the middle of the fixed plate, the planetary rotating assembly includes a sun gear and three planetary gears that are evenly arranged around the sun gear, the planetary gears are meshed with the inner gear ring and the planetary gears at the same time, and the sun gear is connected to the driving assembly;

[0006] A cover plate closing the inner gear ring is provided on the front of the fixing plate, and a negative pressure shell surrounding the inner gear ring is fixedly provided on the back of the fixing plate. The negative pressure shell is connected to the air extraction device to maintain a negative pressure state in the negative pressure shell;

[0007] Each planetary wheel is provided with a suction rod, the end of the suction rod is provided with a first suction nozzle, and the first suction nozzle is connected to the negative pressure housing;

[0008] The paper box rack and the box opening suction component are both fixed to the front of the fixed plate, the box opening suction component includes a second suction nozzle with suction force, and the paper box rack is provided with stacked paper boxes;

[0009] The driving assembly drives the sun wheel to rotate, and the sun wheel drives the planetary wheel to rotate. The first suction nozzle on the planetary wheel sucks the stacked cartons on the carton rack, opens the stacked cartons through the second suction nozzle, and puts the opened cartons into the limit groove of the sprocket wheel mechanism.

[0010] The suction force of the second suction nozzle is smaller than the suction force of the first suction nozzle or the intermittent suction of the second suction nozzle.

[0011] Furthermore, the middle portion of the cover plate is fixed on the sun gear and rotates with the sun gear.

[0012] Furthermore, the number of the planetary gears is three, and the edge of the cover plate is provided with three avoidance grooves, and the three planetary gears can be rotatably arranged in the three avoidance grooves respectively.

[0013] Furthermore, the box opening adsorption assembly also includes a support rod, a fixing groove is provided in the middle of the support rod, and the second suction nozzle is fixed in the fixing groove.

[0014] Furthermore, the paper box frame includes two parallel limiting plates, the paper box is placed between the two limiting plates after being stacked, and limiting blocks are provided at the ends of the two limiting plates, and the two side edges of the paper box are supported on the two limiting blocks.

[0015] Furthermore, the paper box has a first surface and a second surface opposite to the first surface, and a middle portion of the first surface of the paper box located at the bottom of the paper box frame is exposed from between the two limiting blocks.

[0016] Furthermore, the first suction nozzle part sucks the first surface of the paper box closest to the limiting block, thereby removing the paper box from the paper box rack, and the second suction nozzle part sucks the second surface of the paper box sucked by the first suction nozzle part, thereby opening the paper box.

[0017] Furthermore, the second suction nozzle is connected to the air extraction device via an air suction duct, and a regulating valve is provided on the air suction duct, and the regulating valve is used to adjust the air suction volume of the air suction duct so that the adsorption force of the second suction nozzle is smaller than the adsorption force of the first suction nozzle.

[0018] Furthermore, the second suction nozzle is connected to the vacuum generator through an air suction duct, the vacuum generator is connected to the compressed air pump, and a throttle valve is provided on the air suction duct, and the throttle valve is used to adjust the air suction volume of the air suction duct so that the suction force of the second suction nozzle is smaller than the suction force of the first suction nozzle.

[0019] Furthermore, a position sensor, a vacuum pump and a timing solenoid valve are provided on the front side of the fixed plate. The second suction nozzle is connected to the vacuum pump through an air suction duct. The timing solenoid valve is arranged on the air suction duct. The timing solenoid valve is electrically connected to the position sensor. The position sensor senses that the paper box is in place and controls the timing solenoid valve to open, so that the second suction nozzle adsorbs the paper box for a preset time period.

[0020] The beneficial effects of a planetary gear type box opening mechanism of the utility model are as follows: the planetary gear type box opening mechanism comprises a fixed plate, a planetary rotating component, a carton rack and a box opening adsorption component; a cover plate for closing an inner gear ring is provided on the fixed plate panel, a negative pressure shell surrounding the inner gear ring is fixedly provided on the back of the fixed plate, the negative pressure shell is connected to an exhaust device to maintain a negative pressure state in the negative pressure shell; each planetary gear is provided with a suction rod, a first suction nozzle is provided at the end of the suction rod, and the first suction nozzle is connected to the negative pressure shell; the carton rack and the box opening adsorption component are both fixed to the front side of the fixed plate, the box opening adsorption component comprises a second suction nozzle with suction force, and the carton rack is provided with stacked cartons; the suction force of the second suction nozzle is less than the suction force of the first suction nozzle or the intermittent suction of the second suction nozzle. The first suction nozzle can suck the stacked cartons on the carton rack and move them, and the second suction nozzle can suck the opposite side of the carton when the first suction nozzle moves the carton to the second suction nozzle, so that the carton is initially opened, which can greatly improve the success rate of subsequent collision opening of the carton, thereby improving the opening rate of the carton opening mechanism of the automatic cartoning machine and ensuring the smooth operation of the automatic cartoning machine. At the same time, the negative pressure shell can provide suction for all the first suction nozzles, avoiding the problem that the first suction nozzles need to be equipped with a separate suction device, which can greatly simplify the structure of the carton opening mechanism and improve its reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of a planetary gear type box opening mechanism in operation according to an embodiment of the utility model.

[0022] Figure 2 It is a structural schematic diagram of a planetary rotating assembly when a planetary gear type box opening mechanism according to an embodiment of the utility model is working.

[0023] Figure 3 It is a side view of the overall structure of a planetary gear type box opening mechanism in operation according to an embodiment of the utility model (the transmission sprocket mechanism is not shown).

[0024] Figure 4 yes Figure 1 Schematic diagram of the installation structure of the second suction nozzle. Figure 5 yes Figure 1 Schematic diagram of the structure before and after the middle paper box is opened by the second suction nozzle.

[0025] Figure 6This is another implementation example diagram of the suction force control of the second suction nozzle part of the planetary gear type box opening mechanism of the utility model.

[0026] In the above figure: 1-fixed plate, 11-accommodating hole, 12-negative pressure shell, 2-sun gear, 21-cover plate, 3-planetary gear, 31-adsorption rod, 32-first suction nozzle, 4-second suction nozzle, 41-support rod, 42-suction duct, 43-regulating valve, 44-timing solenoid valve, 45-position sensor, 5-paper box rack, 6-paper box, 61-first surface, 62-second surface, 7-exhaust device, 8-transmission sprocket mechanism, 81-limiting groove. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the implementation mode of the utility model will be further described below in conjunction with the accompanying drawings.

[0028] Please refer to Figures 1 to 5 The utility model discloses a planetary gear type box opening mechanism, which comprises a fixed plate 1, a planetary rotating component, a paper box frame and a box opening adsorption component.

[0029] When the box opening mechanism is working, a transmission sprocket mechanism 8 is provided below it, and a limiting groove 81 is provided on the transmission sprocket mechanism 8 to move with the transmission sprocket mechanism 8. The planetary gear box opening mechanism of the present application is used to open the stacked paper boxes 6 on the paper box frame 5 (that is, to form a wider gap in the middle of the paper boxes 6) and then place them in the limiting groove 81, so as to facilitate the subsequent automatic packaging device to place the objects to be packaged in the paper boxes 6.

[0030] The fixed plate 1 is a rectangular plate having a front and a back side relatively arranged oppositely (i.e., the front and rear surfaces of the fixed plate 1). A circular receiving hole 11 is provided in the middle of the fixed plate 1, and an inner gear ring is provided in the receiving hole 11. The planetary rotating assembly includes a sun gear 2 and a plurality of planetary gears 3 evenly arranged around the sun gear 2. The planetary gears 3 are meshed with the inner gear ring and the sun gear 2 at the same time (the teeth on the sun gear 2, the planetary gears 3, and the inner gear ring are not shown). The sun gear 2 is connected to a driving assembly; the driving assembly is used to drive the sun gear to rotate and drive all the planetary gears 3 to rotate, wherein the planetary gears 3 also rotate around the sun gear when they rotate on themselves.

[0031] A cover plate 21 for sealing the inner gear ring in the accommodating hole 11 is provided on the front of the fixing plate 1, and a negative pressure shell 12 surrounding the inner gear ring is fixedly provided on the back of the fixing plate 1. The negative pressure shell 12, the fixing plate 1 and the cover plate 21 form a negative pressure chamber. The driving component is located in the negative pressure shell 12, and the negative pressure shell 12 is connected to the exhaust device 7 to maintain a negative pressure state in the negative pressure chamber of the negative pressure shell 12, wherein a certain gap is provided between the cover plate 21 and the edge of the accommodating hole 11, and the negative pressure chamber is not completely sealed. The exhaust device 7 can continuously exhaust air so that a certain negative pressure state can be maintained even when the negative pressure chamber is not completely sealed.

[0032] Each planetary gear 3 is provided with an adsorption rod 31. In this embodiment, the adsorption rod 31 is an L-shaped hollow rod. Each end of the adsorption rod 31 is provided with a first suction nozzle 32. The first suction nozzle 32 is connected to the negative pressure shell 12, so that the first suction nozzle 32 has a certain adsorption force.

[0033] The paper box frame 5 and the box opening adsorption assembly are both fixed to the front side of the fixing plate 1 , and the box opening adsorption assembly includes a second suction nozzle portion 4 with suction force.

[0034] The paper box frame 5 is provided with stacked paper boxes; in this embodiment, the paper box frame 5 includes two parallel limiting plates, and the paper box 6 is placed between the two limiting plates after being stacked, and the ends of the two limiting plates are each provided with limiting blocks, and the edges of both sides of the paper box 6 are supported on the two limiting blocks. The paper box 6 has a first surface 61 and a second surface 62 opposite to the first surface 61 (the paper box 6 has four side surfaces, and the outer surfaces of one group of opposite side surfaces are the first surface 61 and the second surface 62 respectively), and the middle part of the first surface is exposed from between the two limiting blocks.

[0035] The driving assembly drives the sun wheel to rotate, and the sun wheel drives the planetary wheel 3 to rotate. When the first suction nozzle part 32 on the planetary wheel 3 moves to the carton rack 5, it sucks the first surface 61 of the carton 6 at the bottom of the carton rack 5 and takes it out from the gap between the two limiting plates. After being taken out, the carton 6 is in a natural slightly opened state (refer to a in 5). The planetary wheel 3 continues to rotate, and when the first suction nozzle part 32 thereon moves to the second suction nozzle part 4, the second suction nozzle part 4 sucks the second surface 62 of the carton 6. A suction nozzle part 32 and a second suction nozzle part open the stacked paper box 6 through the adsorption force, wherein the adsorption force of the second suction nozzle part 4 is smaller than the adsorption force of the first suction nozzle part 32, or the second suction nozzle part 4 sucks intermittently, and after the first suction nozzle part 32 of the planetary gear 3 leaves the second suction nozzle part 4, the second suction nozzle part 4 is separated from the second surface 62 of the paper box 6, and the paper box 6 is in an open state at this time (refer to b in 5). After the paper box 6 is opened, partial retraction will still occur, but the retracted opening of the paper box 6 will be significantly larger than the original opening of the paper box 6. When the planetary gear 3 continues to rotate and the first suction nozzle part 32 moves to the lowest point, the paper box 6 sucked by the first suction nozzle part 32 collides with the bottom of the limiting groove 81 of the moving transmission sprocket mechanism 8. At this time, the paper box 6 is fully opened, and the limiting groove 81 restricts the movement of the paper box 6 from both sides. At this time, the first suction nozzle part 32 and the paper box 6 are relatively displaced, so that the first suction nozzle part 32 is separated from the paper box 6, and then the first suction nozzle part 32 puts the fully opened paper box into the limiting groove 81 of the moving transmission sprocket mechanism 8, and the paper box 6 moves with the transmission sprocket mechanism 8, thereby completing the opening process of the paper box 6.

[0036] Preferably, the number of the planetary wheels 3 is three. Setting three planetary wheels 3 can prevent the planetary wheels 3 and the first suction nozzles 32 thereon from interfering with each other during operation, thereby improving the box opening efficiency.

[0037] The cover plate 21 is circular, and has three avoidance grooves on its edge. The three planetary gears 3 are rotatably arranged in the three avoidance grooves. The middle part of the cover plate 21 is fixed on the sun gear and rotates with the sun gear. In this way, it can be ensured that the cover plate 21 can close the receiving hole 11 in the middle part of the fixing plate 1 as much as possible without interfering with the operation of the planetary rotating assembly, so as to facilitate the negative pressure chamber to maintain a negative pressure state.

[0038] Furthermore, the box opening adsorption assembly further comprises a support rod 41, a strip-shaped fixing groove is provided in the middle of the support rod 41, and the second suction nozzle part 4 is fixed in the fixing groove.

[0039] In one embodiment of the present application, the second suction nozzle portion 4 is connected to the exhaust device 7 via a suction duct 42, and a regulating valve 43 is provided on the suction duct 42, and the regulating valve 43 is used to adjust the suction volume of the suction duct 42 so that the suction force of the second suction nozzle portion 4 is smaller than the suction force of the first suction nozzle portion 32, thereby ensuring that the paper box can be separated from the second suction nozzle portion 4 when the first suction nozzle portion 32 and the second suction nozzle portion 4 are away from each other.

[0040] In another embodiment of the present application, the second suction nozzle part 4 is connected to the vacuum generator through an air suction duct 42, and the vacuum generator is connected to a compressed air pump. The compressed air pump is used to introduce compressed air into the vacuum generator to generate negative pressure in the vacuum generator, thereby ensuring that the second suction nozzle part 4 has adsorption force. A throttle valve is also provided on the air suction duct 42, and the throttle valve is used to adjust the air suction volume of the air suction duct 42 so that the adsorption force of the second suction nozzle part 4 is less than that of the first suction nozzle part 32.

[0041] refer to Figure 6 In another embodiment of the present application, a position sensor is provided on the front side of the fixed plate 1, the second suction nozzle part 4 is connected to a vacuum pump through an air suction duct 42, a timing solenoid valve 44 is provided on the air suction duct 42, the position sensor 45 is located on the bracket rod, the position sensor 45 is connected to the timing solenoid valve 44, the position sensor 45 senses that the paper box 6 is in place, and controls the timing solenoid valve 44 to open, so that the second suction nozzle part 4 absorbs the paper box 6 for a preset time period. In this embodiment, the preset time period is 2s, which can ensure that the second suction nozzle part 4 can absorb the second surface 62 of the paper box 6 when the paper box 6 is in place, and at the same time ensure that the second suction nozzle part 4 is separated from the paper box 6 after the paper box 6 is opened.

[0042] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.

[0043] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A planetary gear type box opening mechanism, characterized in that: It includes a fixed plate, a planetary rotating assembly, a carton rack and a carton opening adsorption assembly; The fixed plate has a front side and a back side which are arranged opposite to each other, an inner gear ring is arranged in the middle of the fixed plate, the planetary rotating assembly includes a sun gear and at least one planetary gear, the planetary gear is meshed with the inner gear ring and the sun gear at the same time, and the sun gear is connected to the driving assembly; A cover plate for closing the inner gear ring is provided on the front of the fixing plate, and a negative pressure shell is fixedly provided on the back of the fixing plate. The negative pressure shell is connected to the air extraction device, and a negative pressure state is maintained in the negative pressure shell; Each planetary wheel is provided with a suction rod, the end of the suction rod is provided with a first suction nozzle, and the first suction nozzle is connected with the negative pressure cavity in the negative pressure housing; The paper box frame and the box opening adsorption assembly are both fixed to the front side of the fixed plate. The box opening adsorption assembly comprises a second suction nozzle with suction force. The paper box frame is provided with stacked paper boxes.

2. A planetary gear type box opening mechanism according to claim 1, characterized in that: The middle part of the cover plate is fixed on the sun gear and can rotate with the sun gear.

3. A planetary gear type box opening mechanism according to claim 2, characterized in that: The number of the planetary gears is three, and the edge of the cover plate is provided with three avoidance grooves, and the three planetary gears can be rotatably arranged in the three avoidance grooves respectively.

4. A planetary gear type box opening mechanism according to claim 1, characterized in that: The box opening adsorption assembly also includes a support rod, a fixing groove is provided in the middle of the support rod, and the second suction nozzle is fixed in the fixing groove.

5. The planetary gear type box opening mechanism according to claim 1, characterized in that: The paper box frame comprises two parallel limiting plates, the paper box is placed between the two limiting plates after being stacked, the ends of the two limiting plates are provided with limiting blocks, and the edges of both sides of the paper box are supported on the two limiting blocks.

6. A planetary gear type box opening mechanism according to claim 5, characterized in that: The paper box has a first surface and a second surface opposite to the first surface, and the middle part of the first surface of the paper box located at the bottom of the paper box frame is exposed from between the two limiting blocks.

7. A planetary gear type box opening mechanism according to claim 5, characterized in that: The first suction nozzle is used to suck the first surface of the paper box closest to the limiting block, and the second suction nozzle is used to suck the second surface of the paper box sucked by the first suction nozzle, so as to open the paper box.

8. The planetary gear type box opening mechanism according to claim 1, characterized in that: The second suction nozzle is connected to the air extraction device through an air suction conduit. The air suction conduit is provided with a regulating valve, and the regulating valve is used to adjust the air suction volume of the air suction conduit.

9. The planetary gear type box opening mechanism according to claim 1, characterized in that: The second suction nozzle is connected to a vacuum generator through a suction conduit, the vacuum generator is connected to a compressed air pump, and a throttle valve is arranged on the suction conduit.

10. The planetary gear type box opening mechanism according to claim 1, characterized in that: A position sensor, a vacuum pump and a timing solenoid valve are arranged on the front of the fixing plate. The second suction nozzle is connected to the vacuum pump through a suction duct. The timing solenoid valve is arranged on the suction duct and is electrically connected to the position sensor.

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