Magnetic packaging box opening device

Abstract

The invention discloses a magnetic packaging box opening device, comprising a conveyor belt module for conveying the magnetic packaging box, and a cover opening station, a cover opening correction station and a box body unfolding station arranged along the conveying direction of the conveyor belt module. The cover opening station pulls the small cover on the side of the magnetic packaging box on the conveyor belt module outward to open it, the cover opening correction station corrects the small cover to a completely outwardly opened posture and conveys it backward, and the box body unfolding station flips the upper box of the magnetic packaging box relative to the lower box to an unfolded state. The box opening device of the invention realizes the automatic action of opening the small cover of the magnetic packaging box and unfolding the upper box and the lower box, does not need to manually operate the box opening process, has a high degree of automation, improves the box opening efficiency in the packaging process, and further improves the entire packaging production speed using the magnetic packaging box.

Description

Technical Field

[0001] The invention belongs to automatic packaging equipment, and in particular relates to a magnetic packaging box opening device. Background Art

[0002] As more and more products are packaged in gift boxes on the market, magnetic packaging boxes with magnets are widely used. In the process of product production and packaging, the product packaging operation is currently mainly carried out by manually opening the lid of the magnetic packaging box, which is repetitive and cumbersome, with high labor costs and low efficiency. Most of the existing packaging machines are used to open folded paper packaging boxes, while most magnetic packaging boxes use pre-formed hard shell packaging. As shown in Figure 1, to open the body 100 of the magnetic packaging box, not only the small cover 101 that locks the packaging box by magnetic attraction and snapping is opened, but also the lower box 101 and the upper box 102 that are snapped together need to be unfolded. In addition, the folds of the new hard shell packaging paper box are hard. In automatic packaging production, irregular return deformation is prone to occur after the box body of the packaging box is opened for the first time, which affects the automatic packaging process of subsequent products. Summary of the invention

[0003] The technical problem solved by the present invention is: in order to solve the problems of low efficiency of manual box opening operation and inapplicability of existing box opening devices in the packaging production process using magnetic packaging boxes, a new type of magnetic packaging box opening device is provided, which can realize the automatic and mechanized opening function of the magnetic packaging box and directional output.

[0004] The present invention is implemented by the following technical solutions:

[0005] The magnetic packaging box opening device comprises a conveyor belt module 1 for conveying the magnetic packaging box, and a cover opening station 2, a cover opening correction station 3 and a box body unfolding station 4 arranged along the conveying direction of the conveyor belt module 1;

[0006] The cover opening station 2 is provided with a suction nozzle 26 for pulling outward the small cover on the side of the magnetic packaging box on the conveyor belt module to open it, and a stopper 28 inserted between the side of the packaging box and the small cover after the small cover is pulled open;

[0007] The cover opening correction station 3 is provided with a cover guide block 31 and a support block 32 which are connected with the stop bar 28 in sequence. The connecting end of the cover guide block 31 and the stop bar 28 is provided with a slope for continuously opening the small cover outwards. The support block 32 is extended to the rear end of the cover guide block 31 to keep the small cover in an outwardly opened posture and transmit it backwards.

[0008] The box body unfolding station 4 is provided with an opening lever 43 for unfolding and flipping the upper box of the magnetic packaging box. The opening lever 43 is swingably arranged by a rotating driving element, and its swinging end is provided with an opening lever plate 44 embedded between the upper box and the lower box of the magnetic packaging box.

[0009] Furthermore, it also includes a shaping station 5 connected to the output end of the box body unfolding station 4, and the shaping station 5 is provided with a roller 51 for shaping the folded edge between the small cover and the packaging box, and a box body correction pressing block 54 for shaping the folded edge between the upper box and the lower box of the unfolded magnetic packaging box; the roller 51 is fixedly located above the small cover of the magnetic packaging box after it is unfolded, and rolls the small cover downward to shape it, and the box body correction pressing block 54 is lifted and arranged at the bottom of the unfolded lower box and the upper box, and a box body correction fixed block 52 is fixedly suspended above the box body correction pressing block 54, and the box body correction pressing block 54 presses upward to shape the connection between the lower box and the upper box.

[0010] Furthermore, an output shaping plate 55 is provided at the output end of the shaping station 5. One end of the output shaping plate 55 is fixedly hinged, and the other end has two ends. During the conveying process of the unfolded magnetic packaging box, the output shaping plate is used to press on the small cover and the connection between the upper box and the lower box by its own weight.

[0011] Furthermore, the suction nozzle 26 on the cover opening station 2 is fixed on the connecting rod mechanism 25, and the connecting rod mechanism 25 is driven by the cover opening cylinder 24. The suction nozzle 26 is driven to reciprocate through the connecting rod mechanism 25, and the suction nozzle 26 is connected to the negative pressure device through a pipeline.

[0012] Furthermore, the end of one of the levers of the connecting rod mechanism 25 is also connected to the lifting baffle 27, and the baffle bar 28 is fixed on the lifting baffle 27 and rises and falls together with the lifting baffle 27, and the suction nozzle 26 is driven to move in conjunction with the baffle bar 28 through the connecting rod mechanism 25.

[0013] Furthermore, the cover opening station 2 is also provided with a box pressing plate 21 for pressing and fixing the box body of the magnetic packaging box. The box pressing plate 21 is suspended above the conveyor belt module 1 of the cover opening station 2 through an air bag 22, and the inside of the air bag 22 is connected to the inflation device through a pipeline.

[0014] Furthermore, a pressing plate 34 is provided on the cover opening correction station 3, and the end of the pressing plate 34 is placed on the top of the cover guide block 31 to press down and correct the fold between the small cover opened outward and the packaging box.

[0015] Furthermore, the pressing plate 34 contacts a linkage rod 33 , and the linkage rod 33 is fixedly connected to the lifting end of one of the rods of the linkage mechanism 25 , and the pressing plate 34 , the suction nozzle 26 and the blocking bar 28 are driven to move together through the linkage mechanism.

[0016] Furthermore, a first sensor 35 for detecting whether the small cover is opened outwards into position is embedded on the top of the guide cover block 31, and a rejection push rod 36 connected to a rejection cylinder 37 is also provided on the cover opening correction station 3, and the rejection push rod 36 is guided through a through hole on the guide cover block 31, and the first sensor 35 is feedback-connected to a control module of the rejection cylinder 37.

[0017] Furthermore, a buckle plate 41 for pressing down the lower box of the magnetic packaging box is fixedly provided on the side of the conveyor belt module of the box body unfolding station 4, and a magnetic guide plate 42 for attracting the magnetic side of the magnetic packaging box is fixedly provided on one side of the buckle plate 41. The magnetic packaging box is conveyed to the box body unfolding station, adsorbed by the magnetic guide plate 42 and guides the lower box side of the magnetic packaging box into the buckle plate 41.

[0018] Furthermore, the conveyor belt module of the box body unfolding station 4 is provided with a permanent magnet 46 for adsorbing the small cover after the box body is unfolded, and a second sensor 47 for detecting the position of the small cover is provided on the same side of the permanent magnet 46 .

[0019] In the magnetic packaging box opening device of the present invention, the conveyor belt module 1 includes a main conveyor belt 11 and an auxiliary conveyor belt 12 which are arranged in parallel and transmitted synchronously. The main conveyor belt 11 connects the cover opening station 2, the cover opening correction station 3, the box body unfolding station 4 and the shaping station 5 in series. The auxiliary conveyor belt 12 at least covers the box body unfolding station 4 and the shaping station 5. The main conveyor belt 11 and the auxiliary conveyor belt 12 are both provided with baffles for positioning the box body.

[0020] The box opening device of the present invention realizes the automatic action of opening the small cover of the magnetic packaging box, unfolding the upper box and the lower box, and corrects and shapes the crease after opening the box in combination with the hardness of the crease when the packaging box is opened for the first time, and can reject the packaging box whose small cover is not opened in place, so as to ensure that the opened box body can be automatically packaged through the subsequent automatic packaging assembly line. The whole structure does not need manual operation of the packaging box opening process, has a high degree of automation, improves the box opening efficiency in the packaging process, and further improves the entire packaging production speed using the magnetic packaging box.

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1a , 1b 1 and 1c are schematic diagrams of three states of the opening process of the magnetic packaging box applicable to the present invention.

[0023] Figure 2 Schematic diagram of the overall structure of the magnetic packaging box opening device in the embodiment.

[0024] Figure 3Schematic diagram of the corresponding states of the magnetic packaging box in the embodiment at each station of the box opening device.

[0025] Figure 4 It is a schematic diagram of the conveyor belt module structure in the embodiment.

[0026] Figure 5 Schematic diagram of the cover opening station structure in the embodiment.

[0027] Figure 6a , 6b It is a schematic diagram of the structure of the cover opening correction station in the embodiment.

[0028] Figure 7 It is a schematic diagram of the box body unfolding station structure in the embodiment.

[0029] Figure 8 It is a schematic diagram of the shaping station structure in the embodiment.

[0030] Numbers in the figure: 100-box body, 101-small cover, 102-lower box, 103-upper box, 104-first folded edge, 105-second folded edge;

[0031] 1- conveyor belt module, 11- main conveyor belt, 12- auxiliary conveyor belt, 13- conveyor motor;

[0032] 2-opening station, 21-pressing plate, 22-airbag, 23-adjusting bolt, 24-opening cylinder, 25-connecting rod mechanism, 26-sucking nozzle, 27-lifting baffle, 28-baffle bar;

[0033] 3-cover opening and correction station, 31-cover guide block, 32-support plate, 33-linkage rod, 34-pressing plate, 35-first sensor, 36-rejection push rod, 37-rejection cylinder;

[0034] 4-box body unfolding station, 41-edge buckle plate, 42-magnetic guide plate, 43-box opening lever, 44-box opening plate, 45-box opening cylinder, 46-permanent magnet, 47-second sensor;

[0035] 5-shaping station, 51-roller, 52-box correction fixing block, 53-box correction cylinder, 54-box correction pressing block, 55-output shaping plate. DETAILED DESCRIPTION

[0036] Example

[0037] See also Figure 2 and Figure 3The magnetic packaging box opening device shown in the figure is a specific embodiment of the present invention, which is used for the automatic opening action of the magnetic packaging box body 100 shown in Figure 1. The magnetic packaging box body 100 includes a small cover 101, a lower box 102 and an upper box 103, wherein one side of the upper box 103 is connected to the connecting plate connected to the lower box 102 through a second folding edge 105 and is buckled on the lower box 102, and the other side is connected to the small cover 101 through a first folding edge 104, and the upper box 103 and the lower box 102 are locked by the magnetic material that attracts each other between the side surfaces of the small cover 101 and the lower box 102. Combined with reference to Figure 1a , Figure 1b and Figure 1c As shown in the figure, the box opening device of this embodiment automatically opens the box body of the magnetic packaging box, including opening the small cover 101 of the box body 100 outward and flipping the upper box 103 of the box body 100 relative to the lower box 102 to open it to a flat state.

[0038] like Figure 2 As shown, the box opening device of this embodiment includes a conveyor belt module 1 for continuously conveying magnetic packaging boxes, and a cover opening station 2, a cover opening correction station 3, a box body unfolding station 4 and a shaping station 5 are arranged in sequence in the conveying direction of the conveyor belt module 1, wherein the cover opening station 2 opens and separates the small cover from the box body of the locked magnetic packaging box conveyed on the conveyor belt module 1, as shown in FIG. Figure 1a As shown in FIG, the cover opening correction station 3 completely opens the small cover separated from the box body to the outside of the box body, as shown in FIG. Figure 1b As shown in FIG. 1 , the box body unfolding station 4 swings and flips the upper box of the box body relative to the lower box when the small cover is opened. Figure 1c As shown in , the opening action of the magnetic packaging box is now completed. In addition, considering that the magnetic packaging boxes are all hard shell packaging boxes, the folded edges are relatively hard during the first opening of the box body, and the box body cannot be flipped over and unfolded to a completely flat state. In this embodiment, a shaping station 5 is added at the end of the box opening device to shape the box body in the unfolded state.

[0039] The specific structure of each workstation is described in detail below.

[0040] like Figure 4As shown, the conveyor belt module 1 includes a main conveyor belt 11 and an auxiliary conveyor belt 12. One end of the main conveyor belt 11 is connected to the empty box input conveying device of the magnetic packaging box to feed the unopened magnetic packaging box body into the box opening device, and the other end is for box opening output transmission, and the opened magnetic packaging box is output from the box opening device to enter the next packaging process. The main conveyor belt 11 in this embodiment passes through the cover opening station 2, the cover opening correction station 3, the box body unfolding station 4 and the shaping station 5 in sequence, and all the stations of the box opening device are connected in series. The auxiliary conveyor belt 12 is arranged parallel to the main conveyor belt 11, and is used to receive the box body after being turned over and unfolded. Since the box body is turned over and unfolded after the box body unfolding station 4, in consideration of cost saving, the auxiliary conveyor belt 12 can only cover the box body unfolding station 4 and the shaping station 5, thereby reducing the length of the auxiliary conveyor belt required to be laid. The auxiliary conveyor belt 12 and the main conveyor belt 11 simultaneously convey the unfolded magnetic packaging box body, and are synchronously driven by the conveying motor 13. The magnetic packaging box needs to pass through each station in turn for opening, so the conveyor belt module 1 adopts a beat transmission mode, and needs to stay at each station for one beat. The conveying motor 13 is controlled by a servo motor. In order to ensure that the magnetic packaging box body does not slip along the conveying direction on the conveyor belt, baffles for positioning the box body are provided on both the main conveyor belt 11 and the auxiliary conveyor belt 12.

[0041] like Figure 5 As shown, the cover opening station 2 is provided with a box pressing plate 21, an air bag 22, an adjusting bolt 23, a cover opening cylinder 24, a connecting rod mechanism 25, a suction nozzle 26, a lifting baffle plate 27 and a baffle bar 28, wherein the suction nozzle 26 is arranged on the side of the small cover of the magnetic packaging box entering the cover opening station 2, and is attached to the outside of the small cover by a reciprocating driving mechanism composed of the cover opening cylinder 24 and the connecting rod mechanism 25, and the small cover on the side of the magnetic packaging box is pulled outward and opened and separated from the side of the lower box by negative pressure suction, and the baffle bar 28 is integrally connected with the lifting baffle plate 27, and rises and inserts between the side of the box body and the small cover after the suction nozzle 26 separates the small cover from the box body, so as to separate the small cover from the box body to form a gap, and prevent the small cover from being magnetically locked with the box body again, and the box pressing plate 21 is connected and installed above the magnetic packaging box entering the cover opening station 2 through the air bag 22, and the box body of the entire magnetic packaging box is pressed and fixed during the cover opening process.

[0042] Specifically, the suction nozzle 26 is fixed on the end of one of the levers of the connecting rod mechanism 25. The connecting rod mechanism 25 includes a plurality of levers. The cover opening cylinder 24 drives the suction nozzle 26 to reciprocate through the lever action of the connecting rod mechanism. The lever is hinged and fixed to the top of the fixed frame of the cover opening station, which is located above the entire cover opening station. The ends of adjacent levers are hinged in sequence to form a linkage lever. The suction nozzle 26 is suspended and arranged on one side of the cover opening station through the outermost lever end. The cover opening cylinder 24 can be directly fixed on the top of the frame to drive the connecting rod mechanism. In this embodiment, the cover opening cylinder 24 is used to realize the linkage between cover opening and subsequent correction. The bottom of the fixed frame fixedly installed at the cover opening station is also hinged with a lever. The lever at the bottom of the cover opening station and the lever at the top are used to transmit power through a pull rod. The cover opening cylinder 24 acts on the lever at the bottom, and the power is transmitted through the lever and pull rod of the connecting rod mechanism 25 to drive the suction nozzle 26 to swing back and forth. The connecting rod mechanism 25 is driven by the cover opening cylinder 24, and the suction nozzle 26 is driven to reciprocate through the connecting rod mechanism 25. When the cover opening cylinder 24 extends, the suction nozzle 26 is driven to swing and adsorb the small cover of the magnetic packaging box in the cover opening station. The cover opening cylinder 24 contracts, driving the suction nozzle 26 to swing outward and pull the small cover outward together. In order to improve the controllability of the suction nozzle 26 to the small cover, the suction nozzle 26 is connected to the negative pressure device through a pipeline, and the small cover is actively adsorbed by the negative pressure. After the small cover is pulled open, the suction nozzle 26 is controlled by the negative pressure device to pass part of the positive pressure to separate the suction nozzle from the small cover.

[0043] After the small cover of the magnetic packaging box is sucked and pulled open by the suction nozzle 26, the stopper 28 will rise and be inserted between the small cover and the box body. The stopper 28 can be lifted and lowered by a separate lifting control unit. In this embodiment, the stopper 28 is linked by controlling the connecting rod mechanism 25 of the suction nozzle 26 and the cover opening cylinder 24. The end of the lever of the connecting rod mechanism 25 located at the bottom of the cover opening station is connected to the lifting baffle 27. The lifting baffle 27 is lifted and assembled on the fixed frame below the suction nozzle through guide structures such as guide pillars, and the stopper 28 is fixed on the lifting baffle 27. When the suction nozzle 26 swings to the point where it is adsorbed onto the small cover under the control of the cover opening cylinder 24 and the connecting rod mechanism 25, the baffle bar 28 descends along with the lifting baffle plate 27, and the height of the descent must ensure that it does not affect the small cover being pulled outward by the suction nozzle; when the suction nozzle 26 adsorbs the small cover and pulls the small cover outward, the baffle bar 28 rises along with the lifting baffle plate 27 to be inserted between the small cover and the side wall of the box body, and the suction nozzle 26 and the baffle bar 28 are linked together by a set of driving mechanisms without the need to set up two separate driving units.

[0044] In order to avoid lateral displacement of the magnetic packaging box body caused by pulling during the opening process, the opening station 2 is also provided with a box pressing plate 21 for pressing and fixing the box body of the magnetic packaging box. The box pressing plate 21 is suspended on a fixed frame directly above the opening station 2 through an air bag 22, and the inside of the air bag 22 is connected to an inflation device, such as an air compressor, through a pipeline. When the magnetic packaging box enters the opening station, air is extracted from the air bag 22, and the flattened air bag 22 forms a certain gap between the box pressing plate 21 and the top of the magnetic packaging box, ensuring that the magnetic packaging box enters the opening station smoothly; after the magnetic packaging box enters the opening station and stops, the air bag 22 is inflated and swells, squeezing the box pressing plate 21 downward, pressing and fixing the magnetic packaging box on the conveyor belt module, effectively preventing the magnetic packaging box from being pulled and displaced during the opening process. The airbag 22 is adjustably fixed on the frame above the cover opening station by adjusting the bolt 23. The position of the airbag 22 and the box pressing plate 21 can be fine-tuned by adjusting the bolt 23, thereby controlling the displacement of the box pressing plate 21 to protect the top of the magnetic packaging box from being pressed tightly and not being crushed.

[0045] like Figure 6a and Figure 6b As shown, the cover opening and correction station 3 is provided with a guide cover block 31, a support plate 32, a linkage rod 33, a pressure plate 34, a first sensor 35, a rejection push rod 36 and a rejection cylinder 37, wherein the guide cover block 31 is arranged on the same side as the suction nozzle of the cover opening station, and is docked with the raised baffle 28, the support plate 32 is docked and extends at the tail end of the guide cover block 31, and a slope is arranged at the docking end of the guide cover block 31 and the baffle 28 to continuously open the small cover outward, and the slope structure is specifically embodied in that the front end thickness of the guide cover block 31 is the thinnest, and gradually widens backward, so as to facilitate insertion between the small cover and the box body of the magnetic packaging box moved to the cover opening and correction station, and replace the baffle in the cover opening station 2 to separate the small cover and the box body, and at the same time, the front end height of the guide cover block 31 is the lowest, and gradually increases backward, and in the process of conveying the magnetic packaging box to the cover opening and correction station, the small cover is gradually lifted and opened outward until it is horizontal. The support block 32 is extended to the rear end of the guide cover block 31, and its height is flush with the top of the guide cover block 31. After the magnetic packaging box is conveyed to the cover opening correction station 3 and stops, the small cover is placed on the top of the guide cover block 31 and the support block 32, and the small cover is kept in an outwardly opened posture to shape and correct the first folded edge of the small cover, and is conveyed backward in this posture.

[0046] The pressing plate 34 is installed just above the cover opening correction station 3. When the magnetic packaging box moves to the cover opening correction station and stops, the end of the pressing plate 34 is placed on the top of the cover guide block 31 to press down and correct the first folded edge between the small cover opened outward and the packaging box. When the pressing plate 34 is calibrated, it is necessary to provide a force on the pressing plate to improve the correction effect. In this embodiment, the bottom of the pressing plate 34 contacts with a linkage rod 33. The pressing plate 34 is elastically mounted on the fixed frame above the cover opening correction station through its own elastic material or elastic connecting piece, or is directly hinged on the frame through a hinge structure. The linkage rod 33 is fixedly connected to the lifting end of the pull rod of the linkage mechanism 25. After the magnetic packaging box moves to the cover opening correction station and stops, the cover opening station also transmits a new magnetic installation box. In the process of the cover opening cylinder 24 and the linkage mechanism 25 of the cover opening station driving the suction nozzle 26 and the baffle 28 to link, the linkage rod 33 will also be driven to lift once. The linkage rod 33 rises to cause the pressing plate 34 to swing upward or swing upward to elastically deform. When the linkage rod 33 descends, the pressing plate 34 swings downward by the elastic force or the deadweight of the pressing plate itself, and the first folding position connected between the small cover and the box body of the magnetic packaging box is tapped once, and the small cover is corrected to be parallel to the top of the magnetic packaging box. The pressing plate 34, the suction nozzle 26 and the blocking bar 28 are driven together by the connecting rod mechanism to realize the linkage between the cover opening station and the cover opening correction station, which further reduces the cost of the device and makes the control more convenient.

[0047] The cover opening correction station 3 also needs to detect whether the small cover is opened, and reject the magnetic packaging box that fails to open the cover. In this embodiment, a first sensor 35 for detecting that the small cover is opened outward is embedded on the top of the cover guide block 31. The cover opening correction station 3 is also provided with a rejection push rod 36 connected to the rejection cylinder 37. The rejection push rod 36 is guided through the through hole on the cover guide block 31 and withdraws from the outside of the cover guide block 31 under normal conditions. The first sensor 35 is feedback-connected with the control module of the rejection cylinder 37. The first sensor 35 adopts a photoelectric sensor. When the small cover is opened in place through the cover guide block 31, it will be placed on the top of the cover guide block 31 to cover the first sensor 35 and be detected by the first sensor 35. If the small cover is not opened, the first sensor 35 cannot detect that the small cover covers the cover guide block. At this time, the first sensor 35 sends a signal feedback to control the rejection cylinder 37 to push the magnetic packaging box out of the conveyor belt module on the other side of the cover opening correction station 3 to prevent the magnetic packaging box that fails to open the cover from continuing to enter the subsequent station.

[0048] like Figure 7As shown, the box body unfolding station 4 is provided with a buckle plate 41, a magnetic guide plate 42, a box opening lever 43, a box opening plate 44, a box opening cylinder 45 and a permanent magnet 46. The buckle plate 41 and the magnetic guide plate 42 are used to fix the lower box of the box body transmitted to the box body unfolding station, and the upper box and the lower box are flipped and separated by the box opening lever 43 and the box opening plate 44 controlled by the box opening cylinder 45.

[0049] Specifically, the magnetic guide plate 42 is arranged on the same side of the conveyor belt module as the guide cover block and the support plate of the cover opening correction station 3, and is parallel to the main conveyor belt 11 of the conveyor belt module, and has magnetism on the inner side. When the magnetic packaging box is conveyed to the box body unfolding station 4 through the main conveyor belt 11, the magnetic guide plate 42 and the magnetic side surface of the box body after the small cover is opened attract each other, so that the magnetic guide plate 42 is conveyed forward along the magnetic guide plate 42, and a buckle plate 41 is arranged at the end of the magnetic guide plate 42, and a channel of a certain height is reserved between the buckle plate 41 and the conveyor belt plane. Under the guiding and conveying action of the magnetic guide plate 42, after the magnetic packaging box stops conveying at the box body unfolding station, the buckle plate 41 is inserted into the gap between the upper box and the lower box, and the buckle plate 41 presses the lower box of the magnetic packaging box to prevent the upper box from flipping and shifting during the flipping process, and the height of the lower box ensures that the lower box of the box body after the box is opened can pass through the buckle plate and normally along the conveying direction in the next conveying. At this time, the box opening plate 44 is just inserted into the channel between the upper box and the lower box at the initial position of the box opening lever 43. The box opening lever 43 is swingably assembled just above the box body unfolding station 4, and the box opening lever 43 is controlled to swing by the box opening cylinder 45. The box opening cylinder 45 adopts a rotating cylinder, and the box opening plate 44 is fixed to the swinging end of the box opening lever 43. After the magnetic packaging box is conveyed to the box body unfolding station and stops, the box opening cylinder 45 controls the box opening lever 43 and the box opening plate 44 to flip and unfold the upper box of the magnetic packaging box to the auxiliary conveyor belt 12 on the other side, and then the box opening cylinder 45 controls the box opening lever 43 to swing back to the initial state to avoid obstacles to the backward conveying of the unfolded box body.

[0050] The permanent magnet 46 is fixed on the outer side of the auxiliary conveyor belt 12. The lower cover of the packaging box is flipped onto the auxiliary conveyor belt 12 together with the upper box. The permanent magnet 46 generates magnetic attraction to the magnetic material on the opened small cover. The small cover is adsorbed by the permanent magnet and is in a fully open state, ensuring that the small cover and the upper box are both in a fully open state and transported to the next station. A second sensor 47 is also provided on the outer side of the auxiliary conveyor belt 12. The second sensor 47 is used to detect the position of the flipped small cover to determine whether the upper box is flipped open. The second sensor 47 adopts a photoelectric sensor. When the upper box is flipped open relative to the lower box, the small cover is adsorbed by the permanent magnet 46, which will cover the second sensor, and the second sensor 47 detects the position of the small cover; if the second sensor 47 cannot detect the signal of the small cover, it is determined that the upper box fails to open. At this time, the second sensor 47 feedbacks a signal to the conveyor belt module to stop, and sends an alarm signal through the system's alarm module to remind the operator to handle it.

[0051] like Figure 8 As shown, the shaping station 5 is provided with a roller 51, a box body correction fixing block 52, a box body correction cylinder 53, a box body correction pressing block 54 and an output shaping plate 55. The roller 51 is used to shape the first folded edge between the small cover and the upper box, and the box body correction pressing block 54 driven by the box body correction cylinder 53 is used to shape the second folded edge between the upper box and the lower box of the unfolded magnetic packaging box.

[0052] Specifically, the roller 51 is fixedly installed above the small cover of the magnetic packaging box after it is unfolded. During the transportation of the magnetic packaging box in the shaping station, the roller 51 rolls the small cover downward to further fold the first folded edge between the small cover and the box body to avoid the small cover from curling up during transportation to the subsequent packaging process due to the indentation of the first folded edge being too hard. The box body correction pressing block 54 is lifted and arranged at the bottom of the unfolded lower box and upper box, and is located between the main conveyor belt and the auxiliary conveyor belt of the shaping station. The box body correction pressing block 54 is connected to the box body correction cylinder 53 fixedly installed at the bottom of the shaping station. The box body correction pressing block 54 is lifted and lowered by the extension and contraction of the box body correction cylinder 53. The box body correction pressing block 54 rises and pushes the connection between the unfolded upper box and the lower box upward, so that the two second folded edges between the upper box and the lower box are bent more than 180°, avoiding In order to prevent the crease of the second folded edge from being too hard, which causes the upper box and the lower box to be unable to be flattened after unfolding, a box body correction fixing block 52 is fixed above the box body correction pressing block 54. The box body correction fixing block 52 is fixed on the frame above the shaping station, and a channel for the connection between the upper box and the lower box is retained between the conveying surface between the main conveyor belt and the main conveyor belt. The box body correction pressing block 54 presses the connection between the lower box and the upper box upwards with the box body correction fixing block to achieve the shaping of the second folded edge between the upper box and the lower box.

[0053] After shaping and correction at the shaping station, Figure 1cThe box body in the expanded state is output from the main conveyor belt and the auxiliary conveyor belt of the shaping station. The output end of the shaping station 5 is also provided with an output shaping plate 55. One end of the output shaping plate 55 is fixedly hinged on the fixed frame above the shaping station, and the other end is arranged in a Y shape with two ends. In the process of the expanded magnetic packaging box being output from the shaping station, the two ends of the output shaping plate 55 are respectively pressed on the small cover and the connection between the upper box and the lower box by the dead weight of the output shaping plate 55, so as to output.

[0054] Each cylinder driving component used in this embodiment can be replaced by other well-known driving devices, such as motors or cylinders, which are not listed one by one in this embodiment.

[0055] The magnetic packaging in this embodiment and the control of the rhythmic transmission at each workstation through the conveyor belt module can be controlled by the position sensors corresponding to each workstation. This belongs to the conventional control technology of rhythmic transmission in the assembly line, and this embodiment does not elaborate on its specific control principle.

[0056] The above embodiments are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A magnetic packaging box opening device, characterized in that: It comprises a conveyor belt module (1) for conveying magnetic packaging boxes, and a cover opening station (2), a cover opening correction station (3) and a box body unfolding station (4) arranged along the conveying direction of the conveyor belt module (1); The cover opening station (2) is provided with a suction nozzle (26) for pulling outwards and opening the small cover on the side of the magnetic packaging box on the conveyor belt module, and a stopper (28) inserted between the side of the packaging box and the small cover after the small cover is pulled open; the stopper (28) separates the small cover from the box body to form a gap; The cover opening correction station (3) is provided with a cover guide block (31) and a support block (32) which are connected to the stop bar (28) in sequence, the cover guide block (31) is arranged on the same side as the suction nozzle (26) of the cover opening station (2), and a slope is arranged at the connecting end of the cover guide block (31) and the stop bar (28) to continuously open the small cover outwards, and the support block (32) is extended to the rear end of the cover guide block (31) to keep the small cover in an outwardly opened posture and transmit it backwards; The box body unfolding station (4) is provided with a box opening lever (43) for unfolding and flipping the upper box of the magnetic packaging box. The box opening lever (43) is swingably arranged by a rotating driving element, and a box opening lever plate (44) is provided at its swinging end portion, which is embedded between the upper box and the lower box of the magnetic packaging box. A first sensor (35) is embedded at the top of the cover guide block (31) for detecting whether the small cover is opened outward to the right position. The cover opening correction station (3) is also provided with a rejection push rod (36) connected to a rejection cylinder (37). The rejection push rod (36) is guided into a through hole provided on the cover guide block (31). The first sensor (35) and the rejection cylinder (37) are connected to each other. The control module feedback connection is provided; a buckle plate (41) for pressing the lower box of the magnetic packaging box is fixedly provided on the side of the conveyor belt module of the box body unfolding station (4); a magnetic guide plate (42) for attracting the magnetic side of the magnetic packaging box is fixedly provided on one side of the buckle plate (41); the magnetic packaging box is conveyed to the box body unfolding station, adsorbed by the magnetic guide plate (42) and the lower box side of the magnetic packaging box is guided into the buckle plate (41); the conveyor belt module of the box body unfolding station (4) is provided with a permanent magnet (46) for adsorbing the small cover after the box body is unfolded, and a second sensor (47) for detecting the position of the small cover is provided on the same side of the permanent magnet (46).

2. The magnetic packaging box opening device according to claim 1 further comprises a shaping station (5) docked with the output end of the box body unfolding station (4), the shaping station (5) being provided with a roller (51) for shaping the folded edge between the small cover and the packaging box, and a box body correction pressing block (54) for shaping the folded edge between the upper box and the lower box of the unfolded magnetic packaging box; the roller (51) is fixedly located above the small cover of the unfolded magnetic packaging box, and rolls and shapes the small cover downward, the box body correction pressing block (54) is lifted and arranged at the bottom of the unfolded lower box and the upper box, and a box body correction fixed block (52) is fixedly arranged above the box body correction pressing block (54), and the box body correction pressing block (54) presses and shapes the connection between the lower box and the upper box upward.

3. According to the magnetic packaging box opening device of claim 2, the output end of the shaping station (5) is also provided with an output shaping plate (55), one end of the output shaping plate (55) is fixedly hinged, and the other end has two ends. During the conveying process of the unfolded magnetic packaging box, the output shaping plate is used to press on the small cover and the connection between the upper box and the lower box by its own weight.

4. According to the magnetic packaging box opening device of claim 1, the suction nozzle (26) on the cover opening station (2) is fixed on the connecting rod mechanism (25), and the connecting rod mechanism (25) is driven by the cover opening cylinder (24), and the suction nozzle (26) is driven to reciprocate through the connecting rod mechanism (25), and the interior of the suction nozzle (26) is connected to the negative pressure device through a pipeline.

5. According to the magnetic packaging box opening device of claim 4, the end of one of the levers of the connecting rod mechanism (25) is also connected to the lifting baffle (27), and the baffle bar (28) is fixed on the lifting baffle (27) and rises and falls together with the lifting baffle (27), and the suction nozzle (26) is driven to move together with the baffle bar (28) through the connecting rod mechanism (25).

6. According to the magnetic packaging box opening device of claim 5, the cover opening station (2) is also provided with a box pressing plate (21) for pressing and fixing the box body of the magnetic packaging box, and the box pressing plate (21) is suspended above the conveyor belt module (1) of the cover opening station (2) through an air bag (22), and the inside of the air bag (22) is connected to the inflation device through a pipeline.

7. According to the magnetic packaging box opening device of claim 5, a pressure plate (34) is further provided on the cover opening correction station (3), and the end of the pressure plate (34) is placed on the top of the guide cover block (31) to press down and correct the fold between the small cover opened outward and the packaging box, and the pressure plate (34) is in contact with a linkage rod (33), and the linkage rod (33) is fixedly connected to the lifting end of one of the rods of the connecting rod mechanism (25), and the pressure plate (34), the suction nozzle (26) and the blocking bar (28) are driven to move together through the connecting rod mechanism.

8. According to any one of claims 2-7, the magnetic packaging box opening device, the conveyor belt module (1) comprises a main conveyor belt (11) and an auxiliary conveyor belt (12) arranged in parallel and transmitted synchronously, the main conveyor belt (11) connects the cover opening station (2), the cover opening correction station (3), the box body unfolding station (4) and the shaping station (5) in series, the auxiliary conveyor belt (12) at least covers the box body unfolding station (4) and the shaping station (5), and the main conveyor belt (11) and the auxiliary conveyor belt (12) are both provided with baffles for positioning the box body.

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