A carton conveying and stacking system and method

Abstract

The present invention discloses a strip carton conveying and stacking system and method, which includes a conveying mechanism, a lifting mechanism, a packaging bag stripping mechanism, and a stacking and buffering mechanism. The conveying mechanism includes a conveying belt conveyor I and a conveying belt conveyor II; the lifting mechanism includes an unpacking platform and a lifting device, and a strip carton pushing device is arranged above the lifting device, which can push the layered strip cartons from the lifting device onto the conveying belt conveyor I; the packaging bag stripping mechanism includes a telescopic material taking component and a packaging bag stripping channel, and the telescopic material taking component passes the strip cartons from the conveying belt conveyor I through the packaging bag stripping channel to strip the outer packaging bags of the strip cartons and transfer them to the conveying belt conveyor II; the stacking and buffering mechanism includes a stacking device and a buffering device, which stack and buffer the strip cartons at the output end of the conveying belt conveyor II for use in the next process. This system and method save labor costs, improve work efficiency, and maintain the workshop production environment.

Description

Technical Field

[0001] The present invention relates to the field of cigarette manufacturing equipment, and particularly to a carton conveying and stacking system and method. Background Art

[0002] Currently, when cigarette manufacturing companies produce special-shaped cigarettes of the Lotus series, there is no feeding device in the process of removing the outer packaging bags of special-shaped cartons. If manual labor is used to supply special-shaped cartons onto the conveyor belt, since the height of the conveyor belt from the ground is relatively high, workers need to raise their hands to complete the supply of cartons, which is extremely inconvenient to operate. Moreover, the cartons just unpacked from the box usually have several layers, and manual operation cannot supply multiple layers of cartons continuously and at one time. At the same time, in the process of removing the outer packaging bags of special-shaped cartons, it is necessary to rely on manual labor to remove the outer packaging bags of cartons and then supply them to the carton filling machine. Due to the high labor cost of manually removing the carton packaging bags, low work efficiency, and easy damage to the cartons, currently, when cigarette manufacturing companies produce special-shaped cigarettes, the work efficiency is relatively low, the labor cost is relatively high, and the on-site environment is relatively chaotic. Summary of the Invention

[0003] To solve the above problems, the present application provides a carton conveying and stacking system and method to achieve automatic feeding of cartons, automatic peeling of the outer packaging bags of cartons, and stacking and buffering of cartons to meet the feeding standards of the next process.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0005] The present application provides a carton conveying and stacking system, including

[0006] A conveying mechanism, including a conveyor belt I and a conveyor belt II that is arranged parallel and offset from the conveyor belt I and has a partially overlapping area with it in the vertical direction; the conveyor belt II includes a guiding belt, and a guiding roller group is arranged in the middle of the upper part thereof, so that when the guiding belt is transmitted to the guiding roller group, it first bends downward in an "S" shape and then is transmitted upward in a slope shape. The cartons are vertically transferred onto the conveyor belt II. When the longitudinally placed cartons pass through the guiding roller group, the cartons fall down and are placed horizontally and are conveyed upward along the slope of the guiding belt to increase the contact area between the cartons and the guiding belt;

[0007] A lifting mechanism, including a unpacking platform for placing layered cartons and a lifting device for the up and down movement of cartons located at the input end of the conveyor belt I, which are arranged in sequence; the height of the upper end surface of the unpacking platform from the ground is less than the height of the upper end surface of the conveyor belt I; a carton pushing device is arranged above the lifting device, which can push the layered cartons from the lifting device onto the conveyor belt I;

[0008] The packaging bag stripping mechanism comprises a telescopic material taking component located above the strip box, and a packaging bag stripping channel located in a partially overlapping area between the conveyor belt conveyor I and the conveyor belt conveyor II. The telescopic material taking component is used to transfer the strip box from the conveyor belt conveyor I to the conveyor belt conveyor II through the packaging bag stripping channel. The packaging bag stripping channel comprises an adjustment frame for adjusting the width of the packaging bag stripping channel and a rough chamfer block located inside the adjustment frame. The packaging bag is stripped by the difference in friction between the packaging bag, the strip box, and the rough chamfer block.

[0009] The stacking and caching mechanism comprises a stacking device and a caching device located at the output end of the conveyor belt machine II, the stacking device comprises a base, two lifting assemblies in the shape of a "卍", and a transmission assembly, the lifting assemblies are mirror-imaged at the left and right ends of the base and are respectively connected to the output shafts of the transmission assembly, the lifting assembly comprises four equiangularly distributed troughs for accommodating and positioning strip boxes, the strip boxes accommodated in the troughs with openings facing inward are lifted upward in a row and stacked in sequence by the two lifting assemblies rotating simultaneously at the same angular velocity; the caching device comprises a caching bin for storing the stacked strip boxes and a caching pusher for pushing a row of stacked strip boxes into the caching bin.

[0010] As an improvement of the above scheme, the lifting device includes a lifting base, a lifting platform connected above the lifting base and a power assembly that drives the lifting platform up and down, the power assembly includes a driving member I and a telescopic rod I, the lifting base includes parallel and oppositely arranged scissor-type links and a driving rod vertically arranged between the scissor-type links, the end of the telescopic rod I is connected to the driving rod, and a pulley is provided at the bottom end of the scissor-type links. The driving member I drives the telescopic rod I to drive the driving rod to move forward and backward to unfold or fold the scissor-type links, and the lifting platform is lifted up and down under the unfolding and folding of the scissor-type links.

[0011] As an improvement of the above-mentioned scheme, the strip box pushing device includes a telescopic rod II, a material picking plate connected to the end of the telescopic rod II and a driving member II for driving the telescopic rod II to move forward and backward. A strip box detection device I is arranged on the inner side of the material picking plate. When the strip box detection device I detects the strip box information, the telescopic rod II contracts to drive the material picking plate, and at the same time the material picking plate pushes the strip box on the lifting platform to the conveyor belt machine I.

[0012] As an improvement of the above solution, the telescopic material taking assembly includes a telescopic rod III, a pull rod rotatably connected to the end of the telescopic rod III, and a driving member III for driving the telescopic rod III to move back and forth. The packaging bag stripping channel is located below the starting point of the telescopic rod III. The number of the packaging bag stripping channels is two. The telescopic rod III is located at the middle position between the two packaging bag stripping channels. The pull rod includes a cross bar and two material taking hooks with the two ends of the cross bar as the rotation centers. The two material taking hooks are arranged in a mirror image at the two ends of the cross bar, and the distance between them is larger than the distance between the two packaging bag stripping channels by the thickness of a cigarette carton, so that the ends of the material taking hooks are directly opposite to the central positions of the sides of the cigarette cartons, ensuring that the two cigarette cartons pass through the packaging bag stripping channels smoothly at the same time.

[0013] As an improvement of the above solution, a positioning baffle is provided at the output end of the conveyor belt I, and a cigarette carton detection device II is provided inside the positioning baffle.

[0014] As an improvement of the above solution, the adjusting frame includes a cross beam and two vertical rods respectively located at both ends of the cross beam. One vertical rod is fixedly connected to the cross beam, and a spring is provided outside the other vertical rod to adjust the width of the inner sides of the packaging bag stripping channels.

[0015] As an improvement of the above solution, a horn-shaped negative pressure suction port is provided above the packaging bag stripping channel for sucking the stripped packaging bag.

[0016] As an improvement of the above solution, the buffer pusher includes a slide rail located above the buffer bin and a pusher plate movable along the slide rail. A cigarette carton detection device III is provided on the upper part of the pusher plate to detect the cigarette cartons stacked upward in a row at the lifting assembly.

[0017] As an improvement of the above solution, the front end of the trough is smoothly connected with a guide plate to convey the cigarette cartons into the trough.

[0018] This application also provides a cigarette carton conveying and stacking system and method. The method is applied to the cigarette carton conveying and stacking system of any one of the above, and the method includes:

[0019] S1: Cigarette carton lifting and feeding

[0020] Set the unpacking platform to be flush with the lifting platform. The staff unpacks the layered cigarette cartons on the unpacking platform, arranges the layered cigarette cartons into several layers and places them on the unpacking platform, and pushes all the layered cigarette cartons onto the lifting platform for positioning and sorting of the cigarette cartons.

[0021] Start the driving member I, the lifting platform rises until the strip box detection device I detects the strip box on the uppermost layer, that is, the lower end surface of the strip box on the uppermost layer is flush with the upper end surface of the belt conveyor I, the driving member I stops running, the telescopic rod II shrinks from the initial extended state, and the material picking plate pushes the strip box on the lifting platform to the conveyor belt I as the telescopic rod II moves;

[0022] After the top layer of boxes is pushed, the lifting platform automatically continues to rise until the box detection device I detects the second layer of boxes again, and the pick-up plate pushes all the second layer of boxes onto the conveyor belt machine I, and this is repeated until all layers of boxes are pushed;

[0023] S2: Packaging bag stripping and collection

[0024] The strip boxes are placed longitudinally on the conveyor belt I and transported backwards. Under the blocking of the positioning baffle, the strip boxes are stacked in a row closely at the output end of the conveyor belt I so that the retracting material taking device can take the material;

[0025] When the strip box detection device II detects the strip box, the telescopic material taking component takes the material from the output end of the conveyor belt machine I, the telescopic rod III is retracted from the initial extended state, and the pull rod is in a falling state, so as to transport the strip box from the conveyor belt machine I through the packaging bag stripping channel and then to the conveyor belt machine II;

[0026] When the strip box passes through the packaging bag stripping channel during the automatic material picking process, the spring on the outside of the vertical rod is in a compressed state. The spring tension drives the rough chamfered block fixedly connected to the vertical rod to apply pressure to the strip box. The friction between the rough chamfered block and the outer bag is greater than the friction between the packaging bag and the strip box. The packaging bag is removed by utilizing the friction difference. The removed packaging bag is collected by the negative pressure suction port above the packaging bag stripping channel.

[0027] S3: Barrel turning

[0028] The longitudinally placed strip boxes are transferred vertically to the conveyor belt II. When the strip boxes pass through the guide roller group, the strip boxes fall down and are placed horizontally and transported upward along the slope of the guide belt to increase the contact surface between the strip boxes and the guide belt.

[0029] S4: Cassette stacking and buffering

[0030] The left and right lifting assemblies are in the initial states of "卐" and "卍" respectively. The strip box enters the two slots with the openings facing inward at the upper part of the lifting assembly through the guide plate, and the transmission assembly is started. The two lifting assemblies rotate 90 degrees at the same angular speed at the same time to complete the upward stacking of one strip box. The next strip box enters the slot, and the lifting assembly rotates 90 degrees again. This is repeated until the strip box detection device III detects the strip box information, and the lifting assembly stops the stacking work;

[0031] When the strip carton detection device Ⅲ detects the strip carton information, the pushing plate pushes a stacked column of strip cartons from the front of the stacking device to move backward until it fits with other columns of strip cartons in the buffer bin, and then the pushing plate retracts back to the front of the stacking device; the stacking device continues to stack, and so on until all the strip cartons are stacked and pushed into the buffer bin.

[0032] The beneficial effects brought by the present invention are as follows:

[0033] First, in the lifting mechanism, the lifting platform can move up and down between the upper end surface of the disassembly platform and the upper end surface of the conveyor belt Ⅰ. When the lifting platform is flush with the unpacking platform, all the layered strip cartons can be pushed into the lifting platform, and then the lifting platform rises until the strip carton detection device Ⅰ detects the topmost strip carton. At this time, the lower end surface of the topmost strip carton is flush with the upper end surface of the belt conveyor Ⅰ, the driving member Ⅰ stops running, the telescopic rod Ⅱ contracts from the initial extended state, and the picking plate moves with the telescopic rod Ⅱ to push the strip cartons on the lifting platform onto the conveyor belt Ⅰ; the lifting platform continues to rise to pick up the strip cartons of the next layer, and so on until all the strip cartons of all layers are pushed, realizing the function of automatically feeding the conveyor belt Ⅰ.

[0034] Second, in the packaging bag peeling mechanism, the strip cartons are conveyed from the conveyor belt Ⅰ to the conveyor belt Ⅱ through the packaging bag peeling channel. When the strip cartons pass through the packaging bag peeling channel, the spring is in a compressed state and applies a certain pressure to the strip cartons. The frictional force between the rough chamfered block made of polyurethane and the outer packaging bag is greater than the frictional force between the outer packaging bag and the strip cartons. The frictional force difference is used to peel the outer packaging bag, reducing the manual labor cost, improving the work efficiency, protecting the workshop production environment, and realizing the automation of the strip carton packaging bag removal work.

[0035] Third, when the guiding belt passes through the guiding roller group, it presents a structure with a concave middle part. When the longitudinally placed strip cartons pass through the guiding roller group, the strip cartons fall down and are placed horizontally and are conveyed upward along the slope of the guiding belt, increasing the contact area between the strip cartons and the guiding belt, meeting the requirements of the next stacking and buffering process; the guiding belt has a simple structure, low cost, and high production efficiency.

[0036] IV. In the stacking buffer mechanism, two lifting components rotate outward simultaneously to lift the strip boxes placed in the trough with an inward opening in a column upward and stack them in sequence. Each 90-degree rotation completes the upward stacking of one strip box, achieving the function of stacking strip boxes smoothly. When the strip box detection device III detects the strip box information, the lifting components stop working, and the pushing plate pushes the stacked column of strip boxes from the front of the stacking device to the rear until they fit with the other columns of strip boxes in the buffer bin, and then the pushing plate retracts to the front of the stacking device. The combined use of the buffer bin and the buffer pusher alleviates the labor intensity of the operator and ensures the feeding for the next process. The stacking buffer mechanism saves labor costs, improves work efficiency, maintains the workshop production environment, and ensures the supply of strip boxes for the packaging machine in the next process. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0038] Attached Figure 1 is a schematic structural diagram of the strip box conveying and stacking system of the present application;

[0039] Attached Figure 2 is a schematic structural diagram of the lifting device and the conveyor belt I of the present application;

[0040] Attached Figure 3 is a schematic structural diagram of the conveyor belt II and the stacking buffer mechanism of the present application;

[0041] Attached Figure 4 is a schematic structural diagram of the guiding belt of the present application;

[0042] Attached Figure 5 is a schematic structural diagram of the packaging bag peeling channel of the present application;

[0043] Attached Figure 6 is a schematic structural diagram of the telescopic material taking component of the present application;

[0044] Attached Figure 7 is a schematic structural diagram of the stacking device of the present application;

[0045] Attached Figure 8 is a partial structural schematic of the stacking device of the present application Figure 1 ;

[0046] Attached Figure 9 is a partial structural schematic of the stacking device of the present application Figure 2 ;

[0047] Attached Figure 10 is a schematic structural diagram of the lifting component of the present application.

[0048] In the figure: 1, Conveyor Belt I; 2, Conveyor Belt II; 21, Driven Roller; 22, Driving Roller; 23, Guide Roller I; 24, Guide Roller II; 25, Guide Roller III; 3, Unpacking Platform; 4, Lifting Device; 41, Lifting Platform; 42, Driving Rod; 43, Pulley; 44, Telescopic Rod I; 45, Scissor Linkage; 46, Driving Member I; 47, Material Taking Plate; 48, Telescopic Rod II; 49, Driving Member II; 5, Packaging Bag Stripping Channel; 51, Cross Beam; 52, Vertical Rod; 53, Rough Chamfer Block; 6, Telescopic Material Taking Assembly; 61, Driving Member III; 62, Telescopic Rod III; 63, Cross Bar; 64, Material Taking Hook; 65, Fixed Bracket; 7, Stacking Device; 71, Base; 72, Lifting Assembly; 721, Tank Body; 73, Transmission Assembly; 74, Guide Plate; 8, Buffer Device; 81, Slide Rail; 82, Pushing Plate. Detailed Embodiment

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0050] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper side", "lower side", "upper end", "both ends", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0051] In the present invention, unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "connected", "communicated" and other terms should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] Embodiment 1

[0053] Referring to Figures 1-3 , this application provides a strip box conveying and stacking system, including a frame, and a conveying mechanism, a lifting mechanism, a packaging bag stripping mechanism and a stacking and buffering mechanism installed on the frame.

[0054] The conveying mechanism includes a conveyor belt I 1 and a conveyor belt II 2. The upper surfaces of the belts of the conveyor belt I 1 and the conveyor belt II 2 are at the same horizontal plane. They are arranged in parallel and offset, and there is a partially overlapping area in the vertical direction (the conveying direction of the conveyor belt I 1 and the conveyor belt II 2 is horizontal, the direction perpendicular to it on the same horizontal plane is vertical, and the direction perpendicular to this horizontal plane is longitudinal), that is, the output end of the conveyor belt I 1 and the input end of the conveyor belt II 2 are arranged vertically together.

[0055] Refer to Figure 4 , the conveyor belt II 2 includes a guiding belt for conveying the strip boxes from front to back (the traveling direction of the strip boxes). There are a driving roller 22 with a diameter of 150 mm and a driven roller 21 at both ends. The power driving device drives the driving roller 22 to rotate, so as to realize the transmission of the guiding belt. In the upper middle part of the conveyor belt II 2, there is a guiding roller group composed of three guiding rollers with a diameter of 60 mm. When the guiding belt is transmitted to the guiding roller group, it first bends downward in an "S" shape and then transmits upward in a slope shape. The part where the guiding belt bends downward in an "S" shape includes a convex surface and a concave surface formed in sequence. The guiding roller group includes a guiding roller I 23 closely attached to the inner side of the convex surface, a guiding roller II 24 closely attached to the outer side of the concave surface, and a guiding roller III 25 closely attached to the inner side of the highest point of the slope of the guiding belt. When the vertically placed strip box passes through the guiding roller group, the strip box falls down and is placed horizontally and is conveyed upward along the slope of the guiding belt to increase the contact area between the strip box and the guiding belt.

[0056] The included angle between the slope of the guiding belt and its upper end surface is 145° - 150°, which ensures that after the side with the largest area of the strip box contacts the guiding belt, it runs smoothly during transportation without flipping, so as to meet the requirements of the next stacking process.

[0057] The lifting mechanism includes a unpacking platform 3 for placing layered strip boxes and a lifting device 4 for the up and down movement of the strip boxes located at the input end of the conveyor belt I 1, which are arranged in sequence. The whole box of layered strip boxes is three strip boxes arranged vertically. The height of the upper end surface of the unpacking platform 3 from the ground is less than the height of the upper end surface of the conveyor belt I 1 from the ground; the height of the unpacking and assembling platform is 750 mm, which is set according to ergonomic parameters to facilitate the staff to carry out the unpacking work of the whole box of strip boxes on the unpacking and assembling platform.

[0058] Refer to Figure 2, the lifting device 4 includes a lifting base, a lifting platform 41 connected above the lifting base, and a power assembly for driving the lifting platform 41 to move up and down. The lifting platform 41 can move up and down between the upper end surface of the disassembly platform and the upper end surface of the conveyor belt I 1. When the lifting platform 41 drops to the lowest ground clearance of 750 mm, the lifting platform 41 is flush with the unpacking platform 3, facilitating the horizontal pushing of all the layered strip boxes on the unpacking platform 3 onto the lifting platform 41.

[0059] A lifting base platform for placing the lifting base and the power assembly is provided below the lifting base.

[0060] Baffles are respectively arranged on both sides of the lifting platform 41. The vertical distance between the two parallel baffles is adapted to the size of the layered strip box, which is equal to the length of the layered strip box from left to right, and is used for positioning and sorting the layered strip boxes.

[0061] The lifting base includes scissor linkages 45 arranged in parallel and opposite to each other and a driving rod 42 vertically arranged between the scissor linkages 45. The driving rod 42 is located at the front position of the lower part of the scissor linkages 45, and pulleys 43 are respectively arranged at the two bottom ends of the front part of the scissor linkages 45. The setting of the pulleys 43 makes it easier for the scissor linkages 45 to expand and fold.

[0062] The power assembly includes a driving part I 46 and a telescopic rod I 44. The end of the telescopic rod I 44 is connected to the driving rod 42. Pulleys 43 are arranged at the bottom ends of the scissor linkages 45. The driving part I 46 drives the telescopic rod I to drive the driving rod 42 to move forward and backward to expand or fold the scissor linkages 45, and the lifting platform 41 realizes up and down lifting under the expansion and folding of the scissor linkages 45.

[0063] A strip box pushing device is arranged above the baffle, which can push the layered strip box from the lifting device 4 onto the conveyor belt I 1. The strip box pushing device includes a telescopic rod II 48, a material taking plate 47 connected to the end of the telescopic rod II 48, and a driving part II 49 for driving the telescopic rod II 48 to move forward and backward. A fixed support frame for fixing the driving part II 49 is connected to the driving part II 49, and the fixed support frame is connected to the conveyor belt. A strip box detection device I is arranged on the inner side of the material taking plate 47. When the lower end surface of the uppermost strip box rises to be flush with the upper end surface of the conveyor belt I 1, the strip box detection device I detects the strip box information, and the telescopic rod II 48 contracts to drive the material taking plate 47. At the same time, the material taking plate 47 pushes the strip box on the lifting platform 41 onto the conveyor belt I 1.

[0064] The packaging bag peeling mechanism includes a telescopic material taking component 6 located above the strip carton, and two packaging bag peeling channels 5 in a partially overlapping area between the conveyor belt I 1 and the conveyor belt II 2. The telescopic material taking component 6 is used to transfer the strip carton from the conveyor belt I 1 through the packaging bag peeling channel 5 to the conveyor belt II 2. The packaging bag peeling channel 5 includes an adjusting frame made of steel for adjusting the width of the packaging bag peeling channel 5, and a rough chamfer block 53 made of polyurethane located inside the adjusting frame. The packaging bag is peeled off by the friction difference between the packaging bag and the strip carton and the rough chamfer block 53;

[0065] Refer to Figure 6 , the telescopic material taking component 6 includes a telescopic rod III 62, a pull rod rotatably connected to the end of the telescopic rod III 62, and a driving member III 61 for driving the telescopic rod III 62 to move forward and backward. Two fixing brackets 65 for fixing the driving member III 61 are connected to the driving member III 61, and are respectively fixedly connected to both sides of the conveyor belt II 2. The packaging bag peeling channel 5 is located below the starting point of the telescopic rod III 62, and each packaging bag peeling channel 5 can pass through a strip carton placed longitudinally.

[0066] The telescopic rod III 62 is located at the middle position between the two packaging bag peeling channels 5. The pull rod includes a cross bar 63 and two material taking hooks 64 with the two ends of the cross bar 63 as the rotation centers, so that the material taking hooks 64 can be in a raised or lowered state. The two material taking hooks 64 are arranged in a mirror image at both ends of the cross bar 63, and the distance between them is the thickness of three strip cartons. When the pull rod is in the lowered state, the end of the material taking hook 64 is directly opposite to the center position of the side of the strip carton to ensure that two strip cartons pass through the packaging bag peeling channel 5 smoothly at the same time.

[0067] A positioning baffle is arranged at the output end of the conveyor belt I 1, so that the strip cartons in transportation are closely arranged in a row at the output end of the conveyor belt I 1. A strip carton detection device II is arranged inside the positioning baffle. When the strip carton is within the detection distance of the strip carton detection device II, the strip carton detection device II transmits a signal to the telescopic material taking component 6 for material taking.

[0068] Refer to Figure 5 , the adjusting frame includes a cross beam 51 and two vertical rods 52 respectively located at both ends of the cross beam 51. The inner sides of the two vertical rods 52 are both fixedly connected to the rough chamfer block 53. One vertical rod is fixedly connected to the cross beam 51, and a spring is arranged on the outer side of the other vertical rod. The other end of the spring is connected to a fixed block, and the vertical rod 52 can move left and right through the spring to adjust the width of the two inner sides of the packaging bag peeling channel 5. When the strip carton passes through the packaging bag peeling channel 5 during the automatic material taking process, the spring on the outer side of the vertical rod 52 is in a compressed state, and the spring tension drives the rough chamfer block 53 fixedly connected to the vertical rod 52 to apply pressure to the strip carton, and the packaging bag is peeled off by the friction difference between the packaging bag and the strip carton and the rough chamfer block 53.

[0069] A trumpet-shaped negative pressure suction port is provided above the packaging bag stripping channel 5 for sucking the stripped packaging bag. The negative pressure is achieved by using compressed air based on the Venturi principle.

[0070] When the strip box detection device II detects the strip box, the telescopic rod III 62 shrinks from the initial extended state, and the pull rod is in a falling state. At this time, the ends of the two material hooks 64 are facing the center of the side of the strip box. With the telescopic rod III 62, the strip box is transported from the conveyor belt conveyor I1 through the packaging bag stripping channel 5 to the conveyor belt conveyor II2. When the strip box passes through the packaging bag stripping channel 5, the bracket on one side of the adjustment frame moves inward to apply a pressure of 4.9 Newtons to the strip box. The friction between the rough chamfered block 53 made of polyurethane and the outer bag is greater than the friction between the packaging bag and the strip box. The friction difference is used to achieve the strip box to remove the packaging bag. The removed packaging bag is collected by the negative pressure suction port above the packaging bag stripping channel 5 and stored at a designated location. The strip box after the packaging bag is removed is transported to the subsequent stacking and caching mechanism through the conveyor belt conveyor II2. When the packaging bag removal work is completed, the telescopic rod III 62 extends outward from the contracted state, and the pull rod is in a lifted state under the obstruction of the strip box, and extends outward from the top of the strip box along with the telescopic rod III 62.

[0071] The stacking and caching mechanism comprises a stacking device 7 and a caching device 8 located at the output end of the conveyor belt machine II 2. The stacking device 7 comprises a base 71, two lifting components 72 in the shape of a "卍", and a transmission component 73.

[0072] See also Figures 7-10 , the lifting components 72 are mirror-imaged at the left and right ends of the base 71 and are respectively connected to the output shaft of the transmission component 73. The left and right lifting components 72 are respectively in the initial states of "卐" and "卍". The lifting component 72 includes four equiangularly distributed slots 721 for accommodating and positioning the strip boxes. The left and right ends of the strip boxes are respectively accommodated in two slots 7211 with openings facing inwards at the upper part of the lifting component 72. The two lifting components 72 rotate outwards (looking down) at the same angular velocity at the same time, that is, the lifting component 72 on the left rotates counterclockwise (from front to back), and the lifting component 72 on the right rotates clockwise (from front to back), and the strip boxes accommodated in the slots 7211 are lifted upward in a row and stacked in sequence. Each rotation of 90 degrees completes the upward stacking of a strip box. The stacked strip boxes are placed above the upper end surface of the slot 7211 with the opening facing inwards.

[0073] The transmission assembly 73 realizes transmission through a worm gear structure, which includes a motor, a worm gear transmission-connected to the motor output shaft and a worm meshing with the worm gear. The output shaft of the worm gear is transmission-connected to the lifting assembly 72 to enable the two lifting assemblies 72 to rotate at the same angular velocity.

[0074] The buffer device 8 includes a buffer bin for storing the stacked strip boxes and a buffer pusher for pushing a column of stacked strip boxes into the buffer bin.

[0075] The buffer bin includes a buffer bin bottom plate fixedly connected to the rack and two side plates. The height of the buffer bin bottom plate from the ground is equal to the height of the upper end surface of the trough 7211 with the opening facing inward in the initial state, and is smoothly connected to the upper end surface of the lifting assembly 72, which is conducive to smoothly conveying the stacked columnar strip boxes above the lifting assembly 72 into the buffer bin. The two side plates are used to limit the columnar strip boxes to prevent them from tipping over.

[0076] Refer to Figure 3 , the buffer pusher includes a slide rail 81 located above the buffer bin and a push plate 82 that can move along the slide rail 81. A strip box detection device III is provided on the upper part of the push plate 82 to detect the strip boxes stacked upward in a column at the lifting assembly 72. When the strip box detection device III detects the strip box information, the push plate 82 pushes the stacked column of strip boxes from the front of the stacking device 7 to the rear until they fit with the other columns of strip boxes in the buffer bin, and then the push plate 82 retracts back to the front of the stacking device 7.

[0077] There is a smooth connection with a guide plate 74 between the output end of the conveyor belt II 2 and the lifting assembly 72. When the lifting assembly 72 is in the initial state, the upper end surfaces of the conveyor belt II 2, the guide plate 74, and the bottom surface of the trough 7211 with the opening facing inward are on the same horizontal line, which is conducive to smoothly conveying the strip boxes on the belt conveyor II into the trough 7211.

[0078] Embodiment 2

[0079] This embodiment provides a method for conveying and stacking strip boxes, which is applied to the strip box conveying and stacking system in the above Embodiment 1. This method includes the following steps:

[0080] S1: Strip box lifting and feeding

[0081] Set the unpacking platform 3 to be flush with the lifting platform 41. The staff unpacks the layered strip boxes on the unpacking platform 3, arranges the layered strip boxes in several layers and places them on the unpacking platform 3, and then pushes all the layered strip boxes onto the lifting platform 41 for positioning and sorting of the strip boxes;

[0082] Start the driving part I 46, and the lifting platform 41 rises until the strip box detection device I detects the topmost strip box, that is, the lower end surface of the topmost strip box is flush with the upper end surface of the belt conveyor I. The driving part I 46 stops running, and the telescopic rod II 48 contracts from the initial extended state. The picking plate 47 moves with the telescopic rod II 48 and pushes the strip boxes on the lifting platform 41 onto the conveyor belt I 1;

[0083] After the top layer of strip boxes is pushed, the lifting platform 41 automatically continues to rise until the strip box detection device I detects the strip boxes of the second layer again, and the material picking plate 47 pushes all the strip boxes of the second layer onto the conveyor belt machine I1, and this is repeated until all layers of strip boxes are pushed;

[0084] S2: Packaging bag stripping and collection

[0085] The strip boxes are placed longitudinally on the conveyor belt Ⅰ1 and transported backwards. Under the blocking of the positioning baffle, the strip boxes are stacked in a row close to the output end of the conveyor belt Ⅰ1 so that the retracting material taking device can take the material;

[0086] When the strip box detection device II detects the strip box, the telescopic material taking component 6 takes the material from the output end of the conveyor belt conveyor I1, the telescopic rod III 62 is retracted from the initial extended state, and the pull rod is in a falling state, so as to transport the strip box from the conveyor belt conveyor I1 through the packaging bag stripping channel 5 and then to the conveyor belt conveyor II2;

[0087] When the strip box passes through the packaging bag stripping channel 5 during the automatic material picking process, the spring on the outside of the vertical rod 52 is in a compressed state, and the spring tension drives the rough chamfered block 53 fixedly connected to the vertical rod to apply pressure to the strip box. The friction between the rough chamfered block 53 and the outer bag is greater than the friction between the packaging bag and the strip box. The packaging bag is removed by utilizing the friction difference, and the removed packaging bag is collected by the negative pressure suction port above the packaging bag stripping channel 5.

[0088] S3: Barrel turning

[0089] The longitudinally placed strip boxes are transferred vertically to the conveyor belt II. When the strip boxes pass through the guide roller group, the strip boxes fall down and are placed horizontally and transported upward along the slope of the guide belt to increase the contact surface between the strip boxes and the guide belt.

[0090] S4: Cassette stacking and buffering

[0091] The left and right lifting assemblies 72 are in the initial states of "卐" and "卍" respectively. The strip box enters the two slots with the openings facing inward at the upper part of the lifting assembly 72 through the guide plate 74, and the transmission assembly 73 is started. The two lifting assemblies 72 rotate 90 degrees at the same angular speed at the same time to complete the upward stacking of one strip box. The next strip box enters the slot, and the lifting assembly 72 rotates 90 degrees again. This is repeated until the strip box detection device III detects the strip box information, and the lifting assembly 72 stops the stacking work;

[0092] When the strip box detection device III detects the strip box information, the pushing plate 82 pushes the stacked row of strip boxes from the front of the stacking device to the rear until it fits with other rows of strip boxes in the cache bin, and the pushing plate 82 then moves back to the front of the stacking device; the stacking device continues to stack, and this is repeated until all the strip boxes are stacked and pushed into the cache bin.

[0093] It should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A box conveying and stacking system, Features: include The conveying mechanism comprises a conveying belt conveyor I and a conveying belt conveyor II which is arranged in parallel and offset with the conveying belt conveyor I and has a partially overlapping area with the conveying belt conveyor II in the vertical direction; the conveying belt conveyor II comprises a guide belt, and a guide roller group is arranged in the middle part of the guide belt, so that when the guide belt is transmitted to the guide roller group, it first bends downward in an "S" shape, and then transmits upward in a slope shape, and the strip box is vertically transferred to the conveying belt conveyor II. When the strip box placed vertically passes through the guide roller group, the strip box falls down and is placed horizontally and is transmitted upward along the slope of the guide belt to increase the contact surface between the strip box and the guide belt; The lifting mechanism comprises a box unpacking platform for placing layered boxes and a lifting device for moving the boxes up and down, which is arranged in sequence at the input end of the conveyor belt machine I. The height of the upper end surface of the box unpacking platform from the ground is less than the height of the upper end surface of the conveyor belt machine I from the ground. A box pushing device is arranged above the lifting device, which can push the layered boxes from the lifting device to the conveyor belt machine I. The packaging bag peeling mechanism includes a telescopic material-collecting assembly located above the strip box, and a packaging bag peeling channel located in the partially overlapping area between the conveyor belt conveyor I and the conveyor belt conveyor II. The telescopic material-collecting assembly is used to transfer the strip box from the conveyor belt conveyor I to the conveyor belt conveyor II through the packaging bag peeling channel. The packaging bag peeling channel includes an adjustment frame for adjusting the width of the packaging bag peeling channel and a rough chamfered block located on the inner side of the adjustment frame. The packaging bag is peeled off by the friction difference between the packaging bag and the strip box and the rough chamfered block; the telescopic material-collecting assembly includes a telescopic rod III, a pull rod rotatably connected to the end of the telescopic rod III, and a driving member III for driving the telescopic rod III to move forward and backward. The packaging bag peeling channel is located at Below the starting point of the telescopic rod III, there are two packaging bag stripping channels, and the telescopic rod III is located in the middle of the two packaging bag stripping channels. The pull rod includes a cross bar and two material picking hooks with the two ends of the cross bar as the rotation center. The two material picking hooks are arranged at the two ends of the cross bar in a mirror image, and the spacing between them is larger than the spacing between the two packaging bag stripping channels by the thickness of a strip box, so that the ends of the material picking hooks face the center position of the side of the strip box to ensure that the two strip boxes pass through the packaging bag stripping channel smoothly at the same time; the adjustment frame includes a cross beam and two vertical rods located at the two ends of the cross beam, one vertical rod is fixedly connected to the cross beam, and a spring is arranged on the outside of the other vertical rod to adjust the width of the two inner sides of the packaging bag stripping channel; The stacking and caching mechanism comprises a stacking device and a caching device located at the output end of the conveyor belt machine II, wherein the stacking device comprises a base, two lifting assemblies in the shape of a "卍", and a transmission assembly, wherein the lifting assemblies are mirror-imaged at the left and right ends of the base and are respectively connected to the output shafts of the transmission assembly in a transmission manner, wherein the lifting assemblies comprise four equiangularly distributed troughs for accommodating and positioning strip boxes, wherein the strip boxes accommodated in the troughs with openings facing inward are lifted upward in a row and stacked in sequence by the two lifting assemblies rotating simultaneously at the same angular velocity; the caching device comprises a caching bin for storing the stacked strip boxes and a caching pusher for pushing a row of stacked strip boxes into the caching bin.

2. The box conveying and stacking system according to claim 1, Features: The lifting device includes a lifting base, a lifting platform connected to the lifting base and a power component that drives the lifting platform to move up and down. The power component includes a driving member I and a telescopic rod I. The lifting base includes scissor-type links that are arranged in parallel and opposite to each other and a driving rod that is vertically arranged between the scissor-type links. The end of the telescopic rod I is connected to the driving rod. A pulley is provided at the bottom end of the scissor-type links. The driving member I drives the telescopic rod I to drive the driving rod to move forward and backward to unfold or fold the scissor-type links. The lifting platform is lifted up and down under the unfolding and folding of the scissor-type links.

3. The box conveying and stacking system according to claim 1, Features: The strip box pushing device includes a telescopic rod II, a material picking plate connected to the end of the telescopic rod II, and a driving member II for driving the telescopic rod II to move forward and backward. A strip box detection device I is arranged on the inner side of the material picking plate. When the strip box detection device I detects the strip box information, the telescopic rod II contracts to drive the material picking plate, and at the same time the material picking plate pushes the strip box on the lifting platform to the conveyor belt machine I.

4. The box conveying and stacking system according to claim 1, Features: The output end of the conveyor belt machine I is provided with a positioning baffle, and the inner side of the positioning baffle is provided with a strip box detection device II.

5. The box conveying and stacking system according to claim 1, Features: A trumpet-shaped negative pressure suction port is arranged above the packaging bag stripping channel for sucking the stripped packaging bag.

6. The carton conveying and stacking system according to claim 1, Features: The cache pusher includes a slide rail located above the cache bin and a push plate movable along the slide rail, and a bar box detection device III is provided on the upper part of the push plate to detect the bar boxes stacked upward in a row at the lifting assembly.

7. The carton conveying and stacking system according to claim 1, Features: The front end of the trough body is smoothly connected with a guide plate to transport the strip box into the trough body.

8. A method for conveying and stacking strip boxes, the method being applied to the strip box conveying and stacking system according to any one of claims 1 to 7, Features: The method comprises the following steps: S1: Box lifting and feeding The unpacking platform is set flush with the lifting platform, and the staff unpacks the layered boxes on the unpacking platform, arranges the layered boxes in several layers and places them on the unpacking platform, and pushes all the layered boxes onto the lifting platform for positioning and sorting the boxes; Start the driving member I, the lifting platform rises until the strip box detection device I detects the strip box on the uppermost layer, that is, the lower end surface of the strip box on the uppermost layer is flush with the upper end surface of the belt conveyor I, the driving member I stops running, the telescopic rod II shrinks from the initial extended state, and the material picking plate pushes the strip box on the lifting platform to the conveyor belt I as the telescopic rod II moves; After the top layer of boxes is pushed, the lifting platform automatically continues to rise until the box detection device I detects the second layer of boxes again, and the pick-up plate pushes all the second layer of boxes onto the conveyor belt machine I, and this is repeated until all layers of boxes are pushed; S2: Packaging bag stripping and collection The strip boxes are placed longitudinally on the conveyor belt I and transported backwards. Under the blocking of the positioning baffle, the strip boxes are stacked in a row closely at the output end of the conveyor belt I so that the retracting material taking device can take the material; When the strip box detection device II detects the strip box, the telescopic material taking component takes the material from the output end of the conveyor belt machine I, the telescopic rod III is retracted from the initial extended state, and the pull rod is in a falling state, so as to transport the strip box from the conveyor belt machine I through the packaging bag stripping channel and then to the conveyor belt machine II; When the strip box passes through the packaging bag stripping channel during the automatic material picking process, the spring on the outside of the vertical rod is in a compressed state. The spring tension drives the rough chamfered block fixedly connected to the vertical rod to apply pressure to the strip box. The friction between the rough chamfered block and the outer bag is greater than the friction between the packaging bag and the strip box. The packaging bag is removed by utilizing the friction difference. The removed packaging bag is collected by the negative pressure suction port above the packaging bag stripping channel. S3: Barrel turning The longitudinally placed strip boxes are transferred vertically to the conveyor belt II. When the strip boxes pass through the guide roller group, the strip boxes fall down and are placed horizontally and transported upward along the slope of the guide belt to increase the contact surface between the strip boxes and the guide belt. S4: Cassette stacking and buffering The left and right lifting assemblies are in the initial states of "卐" and "卍" respectively. The strip box enters the two slots with the openings facing inward at the upper part of the lifting assembly through the guide plate, and the transmission assembly is started. The two lifting assemblies rotate 90 degrees at the same angular speed at the same time to complete the upward stacking of one strip box. The next strip box enters the slot, and the lifting assembly rotates 90 degrees again. This is repeated until the strip box detection device III detects the strip box information, and the lifting assembly stops the stacking work; When the strip box detection device III detects the strip box information, the pushing plate pushes the stacked row of strip boxes from the front of the stacking device to the rear until it fits with other rows of strip boxes in the cache bin, and the pushing plate then moves back to the front of the stacking device; the stacking device continues to stack, and this is repeated until all the strip boxes are stacked and pushed into the cache bin.

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