A packet hemming component

Abstract

The present invention discloses a packet hemming assembly for hemming a packaging box to be packeted conveyed on a loading and conveying assembly. The packet hemming assembly includes a hemming plate, a limiting pressing plate, and an extrusion plate. The first side plate of the package is bent downward by the hemming plate, and the first side plate of the package and the corresponding supporting edge on the partition are clamped together by the cooperation of the limiting pressing plate and the extrusion plate. With the above technical solution of the present invention, the hemming plate presses the connection part, the limiting pressing plate pushes the connection part of the package towards the position where the supporting edge of the partition is located, the extrusion plate extends into the positioning hole of the partition and moves towards the position where the supporting edge of the partition is located. Finally, the connection part of the package and the supporting edge of the partition are clamped together until they are bonded together.

Description

Technical Field

[0001] The present invention belongs to the technical field of packaging, and particularly relates to a sealing device for a packaging box.

Background Art

[0002] Currently, the common grouping method for dairy products or other similar beverage products is a rectangular array distribution. With the changes in people's travel and the rich and diverse characteristics of social occasions, the single demand for dairy products is increasingly tending towards a medium portion size, that is, the number of dairy products purchased at one time is not a single one and is far less than the number of products in large-sized products. Therefore, the applicant has developed a packaging box in the form of an independent package for three products, which can well meet the usage requirements and is convenient for carrying and taking out. Referring to Figures 1 to 5 As shown, the packaging box 1 is composed of a wrapping member 11 and a separating member 12. The separating plate 12 is arranged on the bottom plate, and three positioning holes 1211 are arranged thereon in a triangular arrangement. Figure 4 In the shown state, the separating member has been bonded to the wrapping member, and the three products are respectively positioned in the positioning holes 122 and are distributed in a triangle. At this time, it is necessary to fold and bond the connecting part between the wrapping member and the bottom plate to facilitate subsequent sealing.

Summary of the Invention

[0003] Aiming at the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a sealing and folding edge assembly for folding and bonding the wrapping member to facilitate subsequent sealing.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A sealing and folding edge assembly folds the packaging box to be sealed conveyed on the loading and conveying assembly.

[0006] The loading and conveying assembly includes two conveying chains arranged side by side and carriers installed on the two conveying chains. The carriers include a bearing plate with a triangular bearing space, and three limiting edges are arranged at the three corner positions corresponding to the triangular bearing space.

[0007] Above the inlet side of the sealing and folding edge assembly, there is a glue gun that sprays glue to the outside of the supporting edge where the separating member is adhered to the inner side of the first side plate.

[0008] The sealing and folding edge assembly includes a folding edge plate that can be lifted and translated above the loading and conveying assembly, a limiting pressing plate that can be translated on the first side of the loading and conveying assembly, and a pressing plate that can be lifted and translated above the loading and conveying assembly. The first side plate of the wrapping member is bent downward by the folding edge plate, and the first side plate of the wrapping member and the corresponding supporting edge on the separating member are clamped together by the cooperation of the limiting pressing plate and the pressing plate.

[0009] Preferably, a support rod extending along the conveying direction and supporting the protruding part of the package is provided outside the second side on the inlet side of the bag sealing and hemming assembly for the loading and conveying assembly.

[0010] Preferably, the bag sealing and hemming assembly further includes a guiding rod provided on the second side of the loading and conveying assembly, and the protruding part of the package is guided by the guiding rod to be folded inward and maintained in the folded state.

[0011] Preferably, the bag sealing and hemming assembly further includes a first limiting rod provided on the first side of the loading and conveying assembly for limiting above the separator.

[0012] Preferably, the loading and conveying assembly is provided with a second limiting rod on the second side of the outlet side of the bag sealing and hemming assembly for maintaining the hemmed state of the protruding part of the package.

[0013] Preferably, the bag sealing and hemming assembly further includes two first gantry brackets. The hemming plate is installed on the lifting beam, and the lifting beam is connected to the first lifting cylinder. A guiding plate is slidably connected to the cross beam of the first gantry bracket, and a first horizontal cylinder is fixed on the cross beam of the first gantry bracket. The piston rod of the first horizontal cylinder is connected to the guiding plate, and the first lifting cylinder is connected to the guiding plate.

[0014] Preferably, the pressing plate is installed on the horizontal beam, the horizontal beam is connected to the second horizontal cylinder, the second horizontal cylinder is connected to the second lifting cylinder, and the second lifting cylinder is installed on the cross beam of the first gantry bracket.

[0015] Preferably, the bag sealing and hemming assembly further includes a second gantry bracket provided between the two first gantry brackets. A limiting pressing plate translation cylinder is installed on the column of the second gantry bracket, the piston rod of the limiting pressing plate translation cylinder is connected to the limiting pressing plate, the limiting pressing plate is further connected to a guide rod, and a guide sleeve cooperating with the guide rod is installed on the column of the first gantry bracket.

[0016] With the above technical solutions of the present invention, the hemming plate can be lifted and translated. It first descends, and the bent connection part of the hemming plate is bent. Then it translates, and the hemming plate presses the connection part, driving the connection part to be bent at a right angle with its main body. After that, it returns to the initial state. Immediately afterwards, the limiting pressing plate translates from one side of the conveying path until it pushes the connection part of the package towards the position where the supporting edge of the separator is located; the pressing plate can be lifted and translated. It first descends, and the pressing plate extends into the positioning hole of the separator. Then it translates, and the pressing plate moves towards the position where the supporting edge of the separator is located. Finally, the connection part of the package and the supporting edge of the separator are clamped together until they are bonded together.

[0017] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

Description of the Drawings

[0018] The invention will be further described below in conjunction with the drawings:

[0019] Figure 1 It is a schematic diagram of the unfolded structure of the packaging box wrapper in the present invention;

[0020] Figure 2 It is a schematic diagram of the unfolded structure of the packaging box separator in the present invention;

[0021] Figure 3 It is a schematic diagram of the structure after the separator and the wrapper are connected together by the wrapper forming device;

[0022] Figure 4 It is a schematic diagram of the packaging box structure to be sealed after putting three grouped products;

[0023] Figure 5 It is a schematic diagram of the structure of the product wrapped after the packaging box is sealed;

[0024] Figure 6 It is a schematic diagram of the structure of the separator forming device in the present invention;

[0025] Figure 7 It is a top view of the main part of the separator forming device in the present invention;

[0026] Figure 8 It is a front view of the main part of the separator forming device in the present invention;

[0027] Figure 9 It is a three-dimensional view of the main part of the separator forming device in the present invention;

[0028] Figure 10 It is a schematic diagram when the separator suction cup in the separator suction and transfer assembly moves below the separator storage assembly;

[0029] Figure 11 It is a schematic diagram of the cooperation between the separator bending assembly and the separator suction cup;

[0030] Figure 12 It is a schematic diagram of the structure of the separator bending assembly;

[0031] Figure 13 It is a schematic diagram of the structure of the wrapper forming device in the present invention;

[0032] Figure 14 It is a schematic diagram of the cooperation between the wrapper suction cup and the wrapper storage assembly;

[0033] Figure 15 It is a schematic diagram of the cooperation between the wrapper suction cup and the wrapper bending assembly;

[0034] Figure 16Schematic diagram of the cooperation of the package suction cup, the separator bending assembly and the package bending assembly;

[0035] Figure 17 Schematic diagram of the structure of the separator after being formed by the separator forming device;

[0036] Figure 18 Schematic diagram of the package suction cup driving the combined separator and package to be placed on the carrier of the loading and conveying assembly;

[0037] Figure 19 Schematic diagram of the structure of the grouping device arranged in a triangle;

[0038] Figure 20 Schematic diagram of the relative positions of the grouping device arranged in a triangle, the grouping handling assembly and the sealing device;

[0039] Figure 21 Schematic diagram of the structure of the sealing and hemming assembly Figure 1 ;

[0040] Figure 22 Schematic diagram of the structure of the sealing and hemming assembly Figure 2 ;

[0041] Figure 23 Schematic diagram of the structure of the grouping handling assembly;

[0042] Figure 24 Schematic diagram of simultaneously putting three grouped products into the packaging box to be sealed and spraying glue on the outer sides of the other two connecting edges of the package after output from the sealing and hemming assembly;

[0043] Figure 25 Schematic diagram of the structure of the sealing handling assembly in the present invention;

[0044] Reference numerals: Product 100, packaging box 1, package 11, bottom plate 111, connecting edge 1111, top plate 112, side plate 113, rectangular part 1131, isosceles trapezoidal part 1132, separator 12, separator plate 121, positioning hole 1211, support edge 122;

[0045] Separator forming device 2, separator storage assembly 21, guide rod 211, retaining piece 212, separator suction and transfer assembly 22, separator suction cup 221, straw opening 2211, limiting convex edge 2212, linear guide rail 222, load platform 223, linear motor 224, linear cylinder 225, separator bending assembly 23, load plate 231, support plate 232, limiting bottom plate 233, straw 234, linear cylinder 235, separator hemming plate 236, separator second translation and lifting mechanism 24;

[0046] Parcel forming device 3, parcel storage component 31, bottom plate 311, load rack 312, lifting drive 313, baffle 314, parcel suction and transfer component 32, parcel suction cup 321, parcel translation and lifting mechanism 322, parcel bending component 33, load template 331, parcel hemming plate 332, hemming cylinder 333, first glue gun 334;

[0047] Grouping device 4, conveyor belt 41, intermediate stop bar 42, first screw 43, second screw 44;

[0048] Grouping handling component 5, fixed frame 51, grouping suction cup 52, translation linear cylinder 53, grouping suction cup translation and lifting mechanism 54;

[0049] Sealing device 6, loading and conveying component 61, conveying chain 611, carrier 612, limit edge 6121, flipping plate 613, support rod 614, second glue gun 62, sealing hemming plate 63, hemming plate lifting and translation mechanism 631, limit push plate 64, limit push plate translation cylinder 641, extrusion plate 65, extrusion plate lifting and translation mechanism 651, guide rod 66, first limit rod 661, second limit rod 662, sealing handling component 67, claw head base 671, claw head suction cup 672, fixed claw hand 673, movable claw hand 674, vertical section 6741, limit plate 675, push plate 676, claw hand cylinder 677.

Specific implementation manner

[0050] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings of the embodiments of the present invention. However, the following embodiments are only the preferred embodiments of the present invention and not all of them. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present invention.

[0051] Those skilled in the art can understand that, without conflict, the features in the following embodiments and implementation manners can be combined with each other.

[0052] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. For example, the terms indicating orientation or position relationship such as "upper", "lower", "front", "rear", "lateral", "longitudinal" below are only based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention.

[0053] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "fixation" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. 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.

[0054] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0055] Referring to Figures 1 to 5 As shown, a packaging box 1 includes a wrapping member 11 and a separating member 12. The wrapping member 11 includes a bottom plate 111 and a top plate 112 having an equilateral triangle structure, and side plates 113 connecting three side edges of the bottom plate and the top plate. The separating member 12 includes a separating plate 121 in the shape of an equilateral triangle and supporting edges 122 extending outward from three side edges of the separating plate and bent vertically downward. Three positioning holes 1211 arranged in a triangle are provided on the separating plate 121 for separating and positioning products 100. The separating member 12 is arranged on the bottom plate 111, and the three supporting edges 122 correspondingly support on the three side edges of the bottom plate. Moreover, the corners of the above-mentioned bottom plate 111, top plate 112 and separating member 12 are all arc-shaped.

[0056] In this embodiment, the area of the top plate 112 is smaller than that of the bottom plate 111. Correspondingly, the side plates include a rectangular portion 1131 and an isosceles trapezoidal portion 1132. Wherein, the bottom edge of the rectangular portion is connected to the side edge of the bottom plate, the top edge is connected to the lower bottom of the isosceles trapezoidal portion, the upper bottom of the isosceles trapezoidal portion is connected to the side edge of the top plate, and the upper bottom of the isosceles trapezoidal portion is smaller than the side length of the top plate, and the bottom edge of the rectangular portion is smaller than the side length of the bottom plate. In this way, after packing the articles, the structure of the packaged packaging box is as Figure 5 shown, there is a gap between adjacent side plates, and the isosceles trapezoidal portion forms an inclined surface.

[0057] In order to reduce costs and facilitate processing, the wrapper 11 and the separator 12 are respectively formed by folding a whole piece of cardboard. Correspondingly, one side plate is integrally connected to the bottom plate and the top plate (for the convenience of description, this side plate is hereinafter referred to as the first side plate, and the other two side plates are called the second side plates), the second side plate is integrally connected to the top plate and bonded to the bottom plate. On the outer sides of both sides of the bottom plate corresponding to the bonded second side plates, there are also connecting edges 1111 extending outward and bent vertically upward, and the two connecting edges are bonded to the inner sides of the corresponding two second side plates; at the same time, the two connecting edges are also correspondingly bonded to the outer sides of two of the supporting edges, and the other supporting edge is bonded to the inner side of the first side plate.

[0058] The above-mentioned wrapper 11 and separator 12 are respectively formed, and respectively form the shapes as shown in Figure 1 and Figure 2 Then they can be assembled by automated equipment.

[0059] Among them, the forming of the separator 12 is completed by the separator forming device 2 as shown in Figures 6 to 12 mainly the bending and forming of the three supporting edges 122 of the separator 12. After the separator 12 is formed, it is connected to the wrapper 11 through the wrapper forming device 3 as shown in Figures 13 to 16 mainly by bonding the three supporting edges 122 of the separator 12 to the corresponding two connecting edges 1111. Then, through the sealing and hemming assembly as shown in Figure 21 and Figure 22 the protruding parts of the wrapper 11 except the bottom plate are bent and the first side plate is bonded to the corresponding connecting edge, forming the state as shown in Figure 3

[0060] The product 100 will be grouped by the grouping device 4 as shown in Figure 19 arranged in a triangle, and then grouped and transported to the unpacked packaging box in the state as shown in Figure 23 through the grouped handling assembly 5 as shown in Figure 3 forming the state as shown in Figure 4 Finally, after the other two connecting edges are coated with glue, the sealing and handling are completed through the sealing and handling assembly 67 as shown in Figure 25 and the state after sealing is as shown in Figure 5

[0061] As shown in Figures 6 to 12 the separator forming device 2 includes a separator storage assembly 21, a separator suction and transfer assembly 22, a translation and lifting mechanism 24, and a separator bending assembly 23.

[0062] ​​The separator storage component 21 is provided with a vertical separator storage space. The separator storage component includes a bottom plate, and a guide rod 211 is vertically fixed on the bottom plate. A vertical storage space can be formed by arranging the guide rods according to the contour of the separator. The bottom of the separator storage space is provided with a separator outlet. An inwardly protruding retaining piece 212 is provided at the edge of the separator outlet. A plurality of retaining pieces 212 are arranged along the edge of the separator outlet. The number of retaining pieces can be adjusted according to the size of the separator, and the retaining pieces are relatively small. In this way, when the separator suction cup sucks the separator, it can overcome the resistance of the retaining piece and separate from the separator outlet.

[0063] The separator suction and transfer component 22 includes a separator suction cup 221 and a first separator translation and lifting mechanism for driving the separator suction cup to achieve translation and lifting. The separator suction cup is moved to the separator storage component 21 by the first separator translation and lifting mechanism to suck the separator 12, and the separator 12 is transferred below the separator bending component 23.

[0064] Corresponding to the equilateral triangle shape of the separator, the separator suction cup 221 includes a suction cup seat with an equilateral triangle structure and three suction pipe openings 2211 arranged in a triangular shape on the suction cup seat. An arc portion is provided at the corner of the suction cup seat, and an arc-shaped limiting convex edge 2212 protruding above the upper plane of the suction cup seat is provided above the arc portion. The arc-shaped limiting convex edge corresponds to the circular arc at the corner of the separator 12.

[0065] The first separator translation and lifting mechanism includes a linear motor 224, a linear guide rail 222, a carrier 223 installed on the linear guide rail, and a linear cylinder 225 installed on the carrier. The output end of the linear motor is connected to the carrier, and the linear motor drives the carrier to perform reciprocating linear motion along the linear guide rail. The piston rod of the linear cylinder is connected to the separator suction cup, and the linear cylinder drives the separator suction cup to perform reciprocating linear motion in the vertical direction.

[0066] Such as Figure 12As shown, the separator bending assembly 23 includes a load plate 231, a limit bottom plate 233, a support plate 232, and a suction pipe 234 that are arranged parallel to each other vertically. The limit bottom plate is an equilateral triangle with rounded corners. The limit bottom plate and the load plate are fixed together by connecting rods. A linear cylinder 235 is installed on the load plate. The piston rod of the linear cylinder is connected to the support plate. The linear cylinder drives the support plate to move up and down in a reciprocating linear motion. The limit bottom plate is provided with through holes. The suction pipe is fixed on the load plate, and the lower end of the suction pipe passes through the through holes. Three sides of the support plate are fixedly connected to separator folding edge plates 236. The three separator folding edge plates cooperate with the three sides of the limit bottom plate to perform a bending operation on the three support edges of the separator plate. After the linear cylinder drives the support plate to move linearly, it can cause the separator folding edge plates to reciprocate along the edge of the limit bottom plate, thereby forming a side where the separator folding edge plates protrude from one side of the limit bottom plate and a side where the separator folding edge plates are away from the limit bottom plate.

[0067] Further, upper and lower through-limiting grooves are provided at the middle positions of the three side surfaces of the suction cup seat and the limit bottom plate. The limiting grooves cooperate with the separator folding edge plates. The separator folding edge plates 236 are provided with two folding heads side by side, and the head ends of the folding heads are turned outwards. When the separator bending assembly 23 is working, it is located above the suction cup seat. The separator 12 is adsorbed on the bottom surface of the limit bottom plate 233 through the suction pipe. The separator folding edge plates 236 squeeze the support edge 122 of the separator 12 downwards, squeeze the support edge into the limiting grooves on the side surfaces of the suction cup seat and the limit bottom plate, and finally realize the bending of the support edge.

[0068] During operation, the separator in the form of cardboard is stacked in the storage space of the separator storage assembly; the separator suction cup on the separator suction and transfer assembly moves to the separator outlet of the separator storage assembly. After the suction cup is lifted by the linear cylinder, it extends from the separator outlet into the interior of the separator storage space until the suction cup contacts and sucks the separator; when the suction cup descends, it sucks away a separator; then the suction cup moves horizontally to below the separator bending assembly, and the separator bending assembly descends, and the end of the suction pipe sucks the separator. The separator folding edge plates descend to perform a bending operation on the separator, and finally the separator folding edge plates rise.

[0069] Further, the separator bending assembly 23 is driven by a separator second translation and lifting mechanism 24 to achieve translation and lifting. The separator second translation and lifting mechanism includes a lower moving plate connected to the load plate, an upper moving plate arranged above the lower moving plate, a linear cylinder installed on the upper moving plate, and a synchronous belt connected to the upper moving plate. The translation of the separator bending assembly is realized through the synchronous belt, and the lifting of the separator bending assembly is realized through the linear cylinder.

[0070] The package 11 has been formed as Figure 1In the shown shape, the separator 12 formed by the separator forming device 2 and the wrapper 11 are connected together by the wrapper forming device 3. As Figures 13 to 18 shown, the wrapper forming device 3 includes a wrapper storage component 31, a wrapper suction and transfer component 32, and a wrapper bending component 33.

[0071] As Figure 14 shown, the wrapper storage component 31 includes a bottom plate 311, a carrier 312 arranged above the bottom plate, a lifting driver 313 installed below the bottom plate for driving the carrier to lift and lower, and a baffle 314 vertically fixed on the bottom plate and passing upward through the carrier. The carrier and the baffle cooperate to form a wrapper storage space; the lifting driver includes a guide rod, a lead screw, and a servo motor. The guide rod is vertically installed on the bottom plate, the carrier is provided with a guide sleeve cooperating with the guide rod, the lead screw is connected with a nut, the nut is connected with the carrier, and the servo motor drives the lead screw to rotate.

[0072] As Figure 15 shown, the wrapper bending component 33 includes a carrier template 331 for placing the wrapper and the separator. The front part of the carrier template is provided with hypotenuses corresponding to two side edges on the bottom plate of the wrapper. The outside of the hypotenuse is provided with a connecting edge 1111 that presses the wrapper when rising, so as to make the wrapper folding plate 332 for vertically bending the connecting edge upward. The wrapper folding plate 332 is driven to lift and lower by a folding cylinder 333, and a first glue gun 334 for spraying glue on two of the supporting edges 122 of the separator 12 is also provided.

[0073] As Figure 13 and Figure 15 shown, the wrapper suction and transfer component 32 includes a wrapper suction cup 321 and a wrapper translation and lifting mechanism 322 for driving the wrapper suction cup to achieve translation and lifting. After the wrapper suction cup sucks the wrapper stored in the wrapper storage space, the wrapper is transferred to the carrier template 331 through the wrapper translation and lifting mechanism 322. The wrapper translation and lifting mechanism includes a lower moving plate connected to the wrapper suction cup, an upper moving plate arranged above the lower moving plate, a linear cylinder installed on the upper moving plate, and a synchronous belt connected to the upper moving plate. The translation of the wrapper suction cup is realized through the synchronous belt, and the lifting of the wrapper suction cup is realized through the linear cylinder.

[0074] To facilitate the suction of the package, the package suction cup 321 includes a suction cup bottom plate. The front half of the suction cup bottom plate is an isosceles trapezoid, and the rear half is a rectangle. The rear half is connected to the lower moving plate of the package translation and lifting mechanism through a connecting rod. After the package suction cup 321 sucks the package, the two waists of the front half isosceles trapezoid are located inside the two side edges of the package bottom plate, without affecting the upward bending of the corresponding connecting edges. Correspondingly, the front half of the load-carrying template is an isosceles trapezoid, and the rear half is a rectangle. A positioning convex edge for positioning the package is provided on the upper side of the head end of the front half. After the package suction cup 321 sucks the package and is positioned by the positioning convex edge, the two side edges on the package bottom plate basically correspond to the two hypotenuses of the front part of the load-carrying template.

[0075] In the initial state, the package folding edge plate is at the low working position. During use, the package suction cup 321 first sucks the package 11 and places it on the load-carrying template 331, and then the separator bending assembly 23 claws and places the separator 12 as shown in Figure 17 on the upper part of the package 11. When the separator is placed on the package, the package suction cup 321 does not detach from the package, and the separator bending assembly 23 does not detach from the separator. The bottom of the separator is supported by the package suction cup. Both the package and the separator are fixed. Then, the first glue gun 334 sprays glue on the two support edges 122 of the separator. The package folding edge plate of the package bending assembly 33 rises, causing the connecting edge 1111 of the package to adhere to the support edge 122 of the separator. Then, the package folding edge plate of the package bending assembly 33 descends, and then the package folding edge plate of the separator bending assembly 23 descends. After squeezing the two connecting parts, it rises.

[0076] Then, as shown in Figure 18 the package suction cup 321 of the package suction and transfer assembly drives the separator and the package that have been combined together and places them on the carrier 612 transported by the loading and conveying assembly 61.

[0077] The products being normally conveyed on the conveyor belt are arranged in a line. Therefore, for products packaged in a triangular arrangement, grouping is required.

[0078] As shown in Figure 19As shown in the figure, a grouping device 4 arranged in a triangle includes a conveyor belt 41, a first screw 43 and a second screw 44 arranged side by side on both sides of the conveying plane of the conveyor belt, and an intermediate stop bar 42 arranged at the middle position above the conveying plane of the conveyor belt. The pitch of the first screw is greater than that of the second screw. The first screw is driven by a first motor, and the second screw is driven by a second motor. The conveyor belt obtains an unfolded state and driving force in a common manner. After two rows of products are conveyed by the conveyor belt, the products will be further separated and arranged under the guidance of the screws. Since the pitch of the first screw is greater than that of the second screw, the first row of products corresponding to the first screw is arranged slightly wider, and the second row of products corresponding to the second screw is separated more. Eventually, the products will be arranged in groups, with three pieces in each group and arranged in a triangular shape.

[0079] Two portal frames are arranged side by side along the extending direction of the conveyor belt. Both ends of the intermediate stop bar are fixed to the cross beam of the portal frame through connecting pieces.

[0080] Next, it is necessary to group and place each group of products arranged in a triangle into the intermediate-state packaging box formed by the packaging forming device, and then it can be finally sealed by the sealing device 6.

[0081] As Figure 22 shown, the sealing device 6 includes a loading and conveying component 61. The loading and conveying component 61 includes two conveying chains 611 arranged side by side and carriers 612 installed on the two conveying chains. As Figure 18 shown, the carrier 612 includes a bearing plate and a triangular bearing space arranged on the bearing plate. Limited stop edges 6121 are arranged at the three corner positions of the triangle in the triangular bearing space. The limited stop edges 6121 are arc-shaped and correspond to the rounded corners at the three corners of the bottom plate of the package. A limit pin for limiting the included angle position where the first side plate and the bottom plate of the package are connected is also arranged on the carrier 612.

[0082] The three products in each group of products are put into the positioning holes of the partition by the grouping handling component 5 together. As Figure 20 shown, the grouping handling component 5 includes a fixed frame 51, three grouping suction cups 52 arranged in a triangle at the bottom of the fixed frame, and a grouping suction cup translation and lifting mechanism 54 for driving the fixed frame to translate and lift. Two of the three suction cups are fixedly installed on the fixed frame 51, and the other suction cup is driven by a translation linear cylinder 53 to slide horizontally on the fixed frame. The translation and lifting mechanism includes a fixed support, a translation and lifting support arranged below the fixed support, a lifting cylinder arranged on the fixed support for driving the translation and lifting support to lift, a synchronous belt for driving the fixed support and driving the translation and lifting support to translate horizontally, and a lead screw nut assembly arranged on the translation and lifting support. The fixed frame is longitudinally translated by the lead screw nut assembly.

[0083] In the initial state, the linear cylinder contracts, causing a grouped suction cup 52 to be at a greater distance from the other two grouped suction cups, and the three are arranged in a triangle with equal lengths on both sides. The fixed frame 51 is installed on the grouped suction cup translation and lifting mechanism 54. During operation, the grouped suction cups are first placed at the grouping device. After each group of grouped suction cups sucks three products and rises, the translation linear cylinder 53 extends, causing the three products that were not originally arranged at equal distances to be arranged at the same spacing. Then, the three products are placed into the positioning holes 1211 of the partition of the packaging box in the unfolded state on the carrier.

[0084] As Figures 20 to 25 shown, the sealing device 6 includes the above-mentioned loading and conveying assembly 61, and also includes a sealing and hemming assembly and a sealing and handling assembly 67.

[0085] The movement mode of the loading and conveying assembly 61 is always a step movement. For example, it advances four carriers at a time. Therefore, after stepping one station, the sealing and hemming assembly can simultaneously perform sealing and hemming operations on the packaging boxes to be sealed on four carriers.

[0086] As Figure 18 shown, the preliminarily connected package and partition are placed into the carrier 612 through the above-mentioned package suction and transfer assembly 32, and except for the bottom plate part that has been connected to the partition, the rest of the package extends outwards from the triangular bearing space, hereinafter referred to as the protruding part of the package.

[0087] Before the package is sealed and hemmed, glue needs to be sprayed on the outside of one of the support edges of the partition (specifically, the support edge corresponding to the connection with the first side plate), so that the side plate can be adhered to the outside of the support edge during sealing and hemming. As Figure 21 shown, therefore, a second glue gun 62 for spraying glue on the outside of the support edge where the partition is adhered to the inside of the first side plate is provided above the entrance side of the sealing and hemming assembly, and this glue gun is installed on the frame of the loading and conveying assembly.

[0088] As Figure 21 and Figure 22 shown, the sealing and hemming assembly includes a sealing and hemming plate 63 that can be lifted and translated above the loading and conveying assembly, a limit push plate 64 that can be translated on the first side of the loading and conveying assembly, and a pressing plate 65 that can be lifted and translated above the loading and conveying assembly. The first side plate of the package is bent downward by the sealing and hemming plate 63, and the corresponding support edge on the partition is clamped together by the cooperation of the limit push plate 64 and the pressing plate 65.

[0089] Among them, the sealing and hemming plate 63 is driven by a hemming plate lifting and translation mechanism 631, the limit push plate 64 is driven by a limit push plate translation cylinder 641, and the pressing plate 65 is driven by a pressing plate lifting and translation mechanism 651.

[0090] Specifically, the packet hemming assembly further includes two first gantry brackets arranged side by side. The packet hemming plate is mounted on the lifting beam, and the lifting beam is connected to the first lifting cylinder. A guide plate is slidably connected to the cross beam of the first gantry bracket, and a first horizontal cylinder is fixed to the cross beam of the first gantry bracket. The piston rod of the first horizontal cylinder is connected to the guide plate, and the first lifting cylinder is connected to the guide plate. The above structure constitutes the hemming plate lifting and translation mechanism 631. The pressing plate is mounted on the horizontal beam, the horizontal beam is connected to the second horizontal cylinder, the second horizontal cylinder is connected to the second lifting cylinder, and the second lifting cylinder is mounted on the cross beam of the first gantry bracket. The above structure constitutes the pressing plate lifting and translation mechanism 651. A second gantry bracket is provided between the two first gantry brackets. A limit push plate translation cylinder 641 is mounted on the column of the second gantry bracket. The piston rod of the limit push plate translation cylinder 641 is connected to the limit push plate, and the limit push plate is also connected to the guide rod. A guide sleeve cooperating with the guide rod is mounted on the column of the first gantry bracket.

[0091] Further, as Figure 22 shown, the packet hemming assembly further includes a guide rod 66 provided on the second side of the loading and conveying assembly. The guide rod is provided with a guiding head with an arc-shaped bend on one side of the inlet of the packet hemming assembly. The guiding head of the guide rod guides the extended part of the package to be folded inward, and then during the subsequent packet hemming process, the guide rod keeps the extended part of the package in a folded state.

[0092] Therefore, under the guiding action of the guide rod, the extended part of the package becomes vertical. Immediately afterwards, the first side plate is in the working area of the packet hemming plate, the limit push plate, and the pressing plate. At this time, glue has been sprayed on the outside of the remaining one support edge of the separator by the glue gun.

[0093] The packet hemming plate can lift and translate. It first descends, and the packet hemming plate bends the first side plate. Then it translates, and the packet hemming plate presses the first side plate, driving the first side plate to bend at a right angle with the bottom plate. After that, it returns to the initial state. Immediately afterwards, the limit push plate translates from one side of the conveying path until it pushes the first side plate of the package towards the position where the support edge of the separator is located. The pressing plate can lift and translate. It first descends, and the pressing plate extends into the positioning hole of the separator. Then it translates, and the pressing plate moves towards the position where the support edge of the separator is located. Finally, the first side plate of the package and the support edge of the separator are clamped together until the two are bonded together.

[0094] Further, a turning plate 613 is rotatably connected to the first side of the loading and conveying assembly on the entrance side of the bagging and hemming assembly. The turning plate is driven by a turning cylinder to achieve turning. Before placing the packaging box to be bagged on the carrier, the turning plate turns outwards and avoids the space above the carrier. After the packaging box to be bagged is placed on the carrier, the turning plate turns inwards to a horizontal state to limit the packaging box to be bagged on the carrier.

[0095] Since the length of the protruding part of the package is relatively long, it is not stable enough to be conveyed on the loading and conveying assembly. In addition to being limited by the turning plate 613, a support rod 614 extending along the conveying direction and forming a support for the protruding part of the package is provided on the second side outside the entrance side of the loading and conveying assembly of the bagging and hemming assembly, so that the protruding part of the package will not fold downwards during the conveying process.

[0096] Further, the bagging and hemming assembly further includes a first limiting rod 661 provided on the first side of the loading and conveying assembly corresponding to the area where the bagging and hemming assembly is located for limiting above the separator. During the operation of the bagging and hemming assembly, the first limiting rod 661 limits the separator 12 and the bottom plate of the package 11 below it, so that when the protruding part of the package bends upwards, the separator 12 and the bottom plate of the package 11 below it can be kept stationary.

[0097] After the bagging and hemming assembly bends and bonds the protruding part of the package, it takes a certain period of time for the glue to fully take effect. Therefore, a second limiting rod 662 for maintaining the hemmed state of the protruding part of the package is provided on the second side of the exit side of the loading and conveying assembly of the bagging and hemming assembly.

[0098] After the bagging and hemming assembly finishes working, the loading and conveying assembly continues to step-convey to the next working station. Therefore, this working station is located on the exit side of the loading and conveying assembly of the bagging and hemming assembly. As Figure 24 shown, a second glue gun 62 for spraying glue on the outer sides of the other two connecting edges of the package is provided at this working station. And at this working station, three products of each group are put into the positioning holes of the separator together through the grouping and handling assembly 5. As Figure 20 shown, the grouping device 4 is arranged on the side of the loading and conveying assembly 61, and the grouping and handling assembly 5 is located above the two. Three products of each group after being grouped by the grouping device 4 are put into the positioning holes of the separator together through the grouping and handling assembly 5.

[0099] Finally, the bagging and handling are completed through the bagging and handling assembly, that is, the protruding part of the package is wrapped downwards on the product, the two second side plates of the package are bonded to the corresponding two connecting edges, and then it is handled after bonding.

[0100] As Figure 25As shown, the packet handling component 67 includes a claw head mechanism and a claw head translation and lifting mechanism for driving the claw head mechanism to translate and lift. The claw head mechanism includes a claw head base 671, a claw head suction cup 672 mounted on the claw head base, two movable claw hands 674, and a fixed claw hand 673. Above the claw head base is provided a claw hand cylinder 677.

[0101] In addition, the claw head base is provided with a push plate 676 above the outer extension part acting on the package in the area between the two movable claw hands. Among them, the bottom cross-section of the head end of the push plate 676 is a trapezoidal surface acting on the outer extension part of the package. The fixed claw hand cooperates with the first side plate on the package. The movable claw hands swing driven by the telescopic movement of the claw hand cylinder. The two movable claw hands respectively cooperate with the other two second side plates on the package, so that the edges of the two second side plates are adhesively fixed to the corresponding connecting edges through glue.

[0102] In order to limit the movement range of the movable claw hands and avoid damage to the packaging box and the internal products, a limiting plate 675 for limiting the movable claw hands is provided on the edge of the claw head base corresponding to the inner side of the movable claw hands. It can be understood that the limiting plate 675 can also be provided on the inner side of the fixed claw hand. The limiting plate basically covers the isosceles trapezoidal part of the upper side plate of the package. The isosceles trapezoidal part is an inclined surface after the packaging is completed. Therefore, the limiting plate is an inclined plate that slopes downward and the inner side wall forms a fit with the isosceles trapezoidal part of the side plate of the package. The two movable claw hands 674 and a fixed claw hand 673 squeeze the rectangular part of the side plate. The movable claw hand is provided with a vertical section 6741 that is in a vertical state after being limited by the limiting plate and forms a fit with the rectangular part of the side plate of the package, so that the rectangular part is three-dimensionally formed, and the bottom edge of the side plate is tightly attached to the corresponding connecting edge, and finally it is adhesively fixed through glue. Therefore, the part of the fixed claw hand below the limiting plate is also in a vertical state.

[0103] After spraying glue on the outer sides of the other two connecting edges of the package, the packet handling component 67 intervenes in the operation. First, the claw head mechanism translates, and the push plate 676 directly pushes down the outer extension part of the package, and the outer extension part of the package covers the product. Then the claw head mechanism descends until the claw head base 671 presses the outer extension part of the package on the product. Then the movable claws are lowered, and the outer extension part of the package is further bent until the two side plates of the package are correspondingly connected to the two connecting edges sprayed with glue on the package. Finally, the movable claw hands 674, the fixed claw hand 673, and the claw head suction cup 672 jointly clamp to establish a connection with the entire packaging box, and the finally packaged packaging box is transported to the conveyor belt.

[0104] It can be understood that all the functional components realizing translation and lifting above can be replaced by other common methods.

[0105] It can be understood that the above products can be yogurt cups, Tetra Pak cartons or other types of products.

[0106] As described above, it is only the specific implementation manner of the invention, but the protection scope of the invention is not limited thereto. Those skilled in the art should understand that the invention includes but is not limited to the content described in the drawings and the above specific implementation manner. Any modification that does not deviate from the functional and structural principles of the invention will be included in the scope of the claims.

Claims

1. A packet hemming assembly that hemms the packaging boxes to be packeted conveyed on a loading and conveying assembly. Characterized in that, The loading and conveying assembly includes two conveying chains arranged side by side and carriers mounted on the two conveying chains. The carriers include a bearing plate with a triangular bearing space, and three limiting edges are provided at the three corner positions corresponding to the triangular bearing space. Above the entrance side of the packet hemming assembly, there is a glue gun that sprays glue onto the outside of the supporting edge of the separating member adhered to the inner side of the first side plate. The packet hemming assembly includes a hemming plate that can be lifted and translated above the loading and conveying assembly, a limiting pressing plate that can be translated on the first side of the loading and conveying assembly, and a pressing plate that can be lifted and translated above the loading and conveying assembly. The first side plate of the package is bent downward by the hemming plate, and the first side plate of the package and the corresponding supporting edge on the separating member are clamped together by the cooperation of the limiting pressing plate and the pressing plate.

2. A packet hemming assembly according to claim 1, Characterized in that, On the second side outside the entrance side of the packet hemming assembly of the loading and conveying assembly, there is a support rod that extends along the conveying direction and forms a support for the extended part of the package.

3. A packet hemming assembly according to claim 1, Characterized in that, The packet hemming assembly further includes a guiding rod arranged on the second side of the loading and conveying assembly, and the extended part of the package is guided to turn inward and maintain the turned state by the guiding rod.

4. A packet hemming assembly according to claim 1, Characterized in that, The packet hemming assembly further includes a first limiting rod arranged on the first side of the loading and conveying assembly to limit above the separating member.

5. A packet hemming assembly according to claim 4, Characterized in that, On the second side of the exit side of the packet hemming assembly of the loading and conveying assembly, there is a second limiting rod that maintains the hemmed state of the extended part of the package.

6. A packet hemming assembly according to claim 1, Characterized in that, The packet hemming assembly further includes two first gantry brackets. The hemming plate is mounted on a lifting beam, and the lifting beam is connected to a first lifting cylinder. A guiding plate is slidably connected to the cross beam of the first gantry bracket, and a first horizontal cylinder is fixed on the cross beam of the first gantry bracket. The piston rod of the first horizontal cylinder is connected to the guiding plate, and the first lifting cylinder is connected to the guiding plate.

7. A packet hemming assembly according to claim 6, Characterized in that, The pressing plate is mounted on a horizontal beam, and the horizontal beam is connected to a second horizontal cylinder. The second horizontal cylinder is connected to a second lifting cylinder, and the second lifting cylinder is mounted on the cross beam of the first gantry bracket.

8. A packet hemming assembly according to claim 6, Characterized in that, The packet hemming assembly further includes a second gantry bracket arranged between the two first gantry brackets. A limiting pressing plate translation cylinder is mounted on the column of the second gantry bracket, and the piston rod of the limiting pressing plate translation cylinder is connected to the limiting pressing plate. The limiting pressing plate is also connected to a guiding rod, and a guiding sleeve cooperating with the guiding rod is mounted on the column of the first gantry bracket.

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